From b1bfd5ea451b60a4725907c282dec232c63f68bb Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:31 +0800 Subject: x86, mpparse: Use pr_lvl() helper utilities to replace printk(KERN_LVL) Use pr_lvl() helper utilities to replace printk(KERN_LVL) for readability, no function changes. Also use pr_cont() to avoid multiple newlines in one printk(). Signed-off-by: Jiang Liu Acked-by: David Rientjes Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-3-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/mpparse.c | 95 ++++++++++++++++++++++------------------------- 1 file changed, 44 insertions(+), 51 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c index d2b56489d70f..b10e1132f316 100644 --- a/arch/x86/kernel/mpparse.c +++ b/arch/x86/kernel/mpparse.c @@ -67,7 +67,7 @@ static void __init MP_processor_info(struct mpc_cpu *m) boot_cpu_physical_apicid = m->apicid; } - printk(KERN_INFO "Processor #%d%s\n", m->apicid, bootup_cpu); + pr_info("Processor #%d%s\n", m->apicid, bootup_cpu); generic_processor_info(apicid, m->apicver); } @@ -87,9 +87,8 @@ static void __init MP_bus_info(struct mpc_bus *m) #if MAX_MP_BUSSES < 256 if (m->busid >= MAX_MP_BUSSES) { - printk(KERN_WARNING "MP table busid value (%d) for bustype %s " - " is too large, max. supported is %d\n", - m->busid, str, MAX_MP_BUSSES - 1); + pr_warn("MP table busid value (%d) for bustype %s is too large, max. supported is %d\n", + m->busid, str, MAX_MP_BUSSES - 1); return; } #endif @@ -110,7 +109,7 @@ static void __init MP_bus_info(struct mpc_bus *m) mp_bus_id_to_type[m->busid] = MP_BUS_EISA; #endif } else - printk(KERN_WARNING "Unknown bustype %s - ignoring\n", str); + pr_warn("Unknown bustype %s - ignoring\n", str); } static void __init MP_ioapic_info(struct mpc_ioapic *m) @@ -121,8 +120,8 @@ static void __init MP_ioapic_info(struct mpc_ioapic *m) static void __init print_mp_irq_info(struct mpc_intsrc *mp_irq) { - apic_printk(APIC_VERBOSE, "Int: type %d, pol %d, trig %d, bus %02x," - " IRQ %02x, APIC ID %x, APIC INT %02x\n", + apic_printk(APIC_VERBOSE, + "Int: type %d, pol %d, trig %d, bus %02x, IRQ %02x, APIC ID %x, APIC INT %02x\n", mp_irq->irqtype, mp_irq->irqflag & 3, (mp_irq->irqflag >> 2) & 3, mp_irq->srcbus, mp_irq->srcbusirq, mp_irq->dstapic, mp_irq->dstirq); @@ -135,8 +134,8 @@ static inline void __init MP_ioapic_info(struct mpc_ioapic *m) {} static void __init MP_lintsrc_info(struct mpc_lintsrc *m) { - apic_printk(APIC_VERBOSE, "Lint: type %d, pol %d, trig %d, bus %02x," - " IRQ %02x, APIC ID %x, APIC LINT %02x\n", + apic_printk(APIC_VERBOSE, + "Lint: type %d, pol %d, trig %d, bus %02x, IRQ %02x, APIC ID %x, APIC LINT %02x\n", m->irqtype, m->irqflag & 3, (m->irqflag >> 2) & 3, m->srcbusid, m->srcbusirq, m->destapic, m->destapiclint); } @@ -148,34 +147,33 @@ static int __init smp_check_mpc(struct mpc_table *mpc, char *oem, char *str) { if (memcmp(mpc->signature, MPC_SIGNATURE, 4)) { - printk(KERN_ERR "MPTABLE: bad signature [%c%c%c%c]!\n", + pr_err("MPTABLE: bad signature [%c%c%c%c]!\n", mpc->signature[0], mpc->signature[1], mpc->signature[2], mpc->signature[3]); return 0; } if (mpf_checksum((unsigned char *)mpc, mpc->length)) { - printk(KERN_ERR "MPTABLE: checksum error!\n"); + pr_err("MPTABLE: checksum error!\n"); return 0; } if (mpc->spec != 0x01 && mpc->spec != 0x04) { - printk(KERN_ERR "MPTABLE: bad table version (%d)!!\n", - mpc->spec); + pr_err("MPTABLE: bad table version (%d)!!\n", mpc->spec); return 0; } if (!mpc->lapic) { - printk(KERN_ERR "MPTABLE: null local APIC address!\n"); + pr_err("MPTABLE: null local APIC address!\n"); return 0; } memcpy(oem, mpc->oem, 8); oem[8] = 0; - printk(KERN_INFO "MPTABLE: OEM ID: %s\n", oem); + pr_info("MPTABLE: OEM ID: %s\n", oem); memcpy(str, mpc->productid, 12); str[12] = 0; - printk(KERN_INFO "MPTABLE: Product ID: %s\n", str); + pr_info("MPTABLE: Product ID: %s\n", str); - printk(KERN_INFO "MPTABLE: APIC at: 0x%X\n", mpc->lapic); + pr_info("MPTABLE: APIC at: 0x%X\n", mpc->lapic); return 1; } @@ -188,8 +186,8 @@ static void skip_entry(unsigned char **ptr, int *count, int size) static void __init smp_dump_mptable(struct mpc_table *mpc, unsigned char *mpt) { - printk(KERN_ERR "Your mptable is wrong, contact your HW vendor!\n" - "type %x\n", *mpt); + pr_err("Your mptable is wrong, contact your HW vendor!\n"); + pr_cont("type %x\n", *mpt); print_hex_dump(KERN_ERR, " ", DUMP_PREFIX_ADDRESS, 16, 1, mpc, mpc->length, 1); } @@ -259,7 +257,7 @@ static int __init smp_read_mpc(struct mpc_table *mpc, unsigned early) } if (!num_processors) - printk(KERN_ERR "MPTABLE: no processors registered!\n"); + pr_err("MPTABLE: no processors registered!\n"); return num_processors; } @@ -295,16 +293,13 @@ static void __init construct_default_ioirq_mptable(int mpc_default_type) * If it does, we assume it's valid. */ if (mpc_default_type == 5) { - printk(KERN_INFO "ISA/PCI bus type with no IRQ information... " - "falling back to ELCR\n"); + pr_info("ISA/PCI bus type with no IRQ information... falling back to ELCR\n"); if (ELCR_trigger(0) || ELCR_trigger(1) || ELCR_trigger(2) || ELCR_trigger(13)) - printk(KERN_ERR "ELCR contains invalid data... " - "not using ELCR\n"); + pr_err("ELCR contains invalid data... not using ELCR\n"); else { - printk(KERN_INFO - "Using ELCR to identify PCI interrupts\n"); + pr_info("Using ELCR to identify PCI interrupts\n"); ELCR_fallback = 1; } } @@ -353,7 +348,7 @@ static void __init construct_ioapic_table(int mpc_default_type) bus.busid = 0; switch (mpc_default_type) { default: - printk(KERN_ERR "???\nUnknown standard configuration %d\n", + pr_err("???\nUnknown standard configuration %d\n", mpc_default_type); /* fall through */ case 1: @@ -462,8 +457,8 @@ static int __init check_physptr(struct mpf_intel *mpf, unsigned int early) #ifdef CONFIG_X86_LOCAL_APIC smp_found_config = 0; #endif - printk(KERN_ERR "BIOS bug, MP table errors detected!...\n" - "... disabling SMP support. (tell your hw vendor)\n"); + pr_err("BIOS bug, MP table errors detected!...\n"); + pr_cont("... disabling SMP support. (tell your hw vendor)\n"); early_iounmap(mpc, size); return -1; } @@ -481,8 +476,7 @@ static int __init check_physptr(struct mpf_intel *mpf, unsigned int early) if (!mp_irq_entries) { struct mpc_bus bus; - printk(KERN_ERR "BIOS bug, no explicit IRQ entries, " - "using default mptable. (tell your hw vendor)\n"); + pr_err("BIOS bug, no explicit IRQ entries, using default mptable. (tell your hw vendor)\n"); bus.type = MP_BUS; bus.busid = 0; @@ -516,14 +510,14 @@ void __init default_get_smp_config(unsigned int early) if (acpi_lapic && acpi_ioapic) return; - printk(KERN_INFO "Intel MultiProcessor Specification v1.%d\n", - mpf->specification); + pr_info("Intel MultiProcessor Specification v1.%d\n", + mpf->specification); #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86_32) if (mpf->feature2 & (1 << 7)) { - printk(KERN_INFO " IMCR and PIC compatibility mode.\n"); + pr_info(" IMCR and PIC compatibility mode.\n"); pic_mode = 1; } else { - printk(KERN_INFO " Virtual Wire compatibility mode.\n"); + pr_info(" Virtual Wire compatibility mode.\n"); pic_mode = 0; } #endif @@ -539,8 +533,7 @@ void __init default_get_smp_config(unsigned int early) return; } - printk(KERN_INFO "Default MP configuration #%d\n", - mpf->feature1); + pr_info("Default MP configuration #%d\n", mpf->feature1); construct_default_ISA_mptable(mpf->feature1); } else if (mpf->physptr) { @@ -550,7 +543,7 @@ void __init default_get_smp_config(unsigned int early) BUG(); if (!early) - printk(KERN_INFO "Processors: %d\n", num_processors); + pr_info("Processors: %d\n", num_processors); /* * Only use the first configuration found. */ @@ -583,10 +576,10 @@ static int __init smp_scan_config(unsigned long base, unsigned long length) #endif mpf_found = mpf; - printk(KERN_INFO "found SMP MP-table at [mem %#010llx-%#010llx] mapped at [%p]\n", - (unsigned long long) virt_to_phys(mpf), - (unsigned long long) virt_to_phys(mpf) + - sizeof(*mpf) - 1, mpf); + pr_info("found SMP MP-table at [mem %#010llx-%#010llx] mapped at [%p]\n", + (unsigned long long) virt_to_phys(mpf), + (unsigned long long) virt_to_phys(mpf) + + sizeof(*mpf) - 1, mpf); mem = virt_to_phys(mpf); memblock_reserve(mem, sizeof(*mpf)); @@ -735,7 +728,7 @@ static int __init replace_intsrc_all(struct mpc_table *mpc, int nr_m_spare = 0; unsigned char *mpt = ((unsigned char *)mpc) + count; - printk(KERN_INFO "mpc_length %x\n", mpc->length); + pr_info("mpc_length %x\n", mpc->length); while (count < mpc->length) { switch (*mpt) { case MP_PROCESSOR: @@ -862,13 +855,13 @@ static int __init update_mp_table(void) if (!smp_check_mpc(mpc, oem, str)) return 0; - printk(KERN_INFO "mpf: %llx\n", (u64)virt_to_phys(mpf)); - printk(KERN_INFO "physptr: %x\n", mpf->physptr); + pr_info("mpf: %llx\n", (u64)virt_to_phys(mpf)); + pr_info("physptr: %x\n", mpf->physptr); if (mpc_new_phys && mpc->length > mpc_new_length) { mpc_new_phys = 0; - printk(KERN_INFO "mpc_new_length is %ld, please use alloc_mptable=8k\n", - mpc_new_length); + pr_info("mpc_new_length is %ld, please use alloc_mptable=8k\n", + mpc_new_length); } if (!mpc_new_phys) { @@ -879,10 +872,10 @@ static int __init update_mp_table(void) mpc->checksum = 0xff; new = mpf_checksum((unsigned char *)mpc, mpc->length); if (old == new) { - printk(KERN_INFO "mpc is readonly, please try alloc_mptable instead\n"); + pr_info("mpc is readonly, please try alloc_mptable instead\n"); return 0; } - printk(KERN_INFO "use in-position replacing\n"); + pr_info("use in-position replacing\n"); } else { mpf->physptr = mpc_new_phys; mpc_new = phys_to_virt(mpc_new_phys); @@ -892,7 +885,7 @@ static int __init update_mp_table(void) if (mpc_new_phys - mpf->physptr) { struct mpf_intel *mpf_new; /* steal 16 bytes from [0, 1k) */ - printk(KERN_INFO "mpf new: %x\n", 0x400 - 16); + pr_info("mpf new: %x\n", 0x400 - 16); mpf_new = phys_to_virt(0x400 - 16); memcpy(mpf_new, mpf, 16); mpf = mpf_new; @@ -900,7 +893,7 @@ static int __init update_mp_table(void) } mpf->checksum = 0; mpf->checksum -= mpf_checksum((unsigned char *)mpf, 16); - printk(KERN_INFO "physptr new: %x\n", mpf->physptr); + pr_info("physptr new: %x\n", mpf->physptr); } /* -- cgit v1.2.3-58-ga151 From a491cc902ca495365e9cd45154b60d8c702d86da Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:32 +0800 Subject: x86, mpparse: Simplify arch/x86/include/asm/mpspec.h Simplify arch/x86/include/asm/mpspec.h by 1) Change max_physical_apicid to static as it's only used in apic.c. 2) Kill declaration of mpc_default_type, it's never defined. 3) Delete default_acpi_madt_oem_check(), it has already been declared in apic.h. 4) Make default_acpi_madt_oem_check() depends on CONFIG_X86_LOCAL_APIC instead of CONFIG_X86_64 to support i386. 5) Change mp_override_legacy_irq(), mp_config_acpi_legacy_irqs() and mp_register_gsi() as static because they are only used in acpi/boot.c. Signed-off-by: Jiang Liu Acked-by: David Rientjes Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Greg Kroah-Hartman Cc: H. Peter Anvin Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Len Brown Cc: Pavel Machek Cc: Seiji Aguchi Cc: HATAYAMA Daisuke Cc: Paul Gortmaker Cc: Richard Weinberger Cc: Andi Kleen Link: http://lkml.kernel.org/r/1402302011-23642-4-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/apic.h | 4 ++-- arch/x86/include/asm/io_apic.h | 3 --- arch/x86/include/asm/mpspec.h | 13 ------------- arch/x86/kernel/acpi/boot.c | 12 +++++++++--- arch/x86/kernel/apic/apic.c | 2 +- 5 files changed, 12 insertions(+), 22 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index 19b0ebafcd3e..69ed79aa9085 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -502,8 +502,6 @@ static inline unsigned default_get_apic_id(unsigned long x) #define DEFAULT_TRAMPOLINE_PHYS_HIGH 0x469 #ifdef CONFIG_X86_64 -extern int default_acpi_madt_oem_check(char *, char *); - extern void apic_send_IPI_self(int vector); DECLARE_PER_CPU(int, x2apic_extra_bits); @@ -552,6 +550,8 @@ static inline int default_apic_id_valid(int apicid) return (apicid < 255); } +extern int default_acpi_madt_oem_check(char *, char *); + extern void default_setup_apic_routing(void); extern struct apic apic_noop; diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index 90f97b4b9347..9121abbc8c8f 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -118,9 +118,6 @@ extern int mp_irq_entries; /* MP IRQ source entries */ extern struct mpc_intsrc mp_irqs[MAX_IRQ_SOURCES]; -/* non-0 if default (table-less) MP configuration */ -extern int mpc_default_type; - /* Older SiS APIC requires we rewrite the index register */ extern int sis_apic_bug; diff --git a/arch/x86/include/asm/mpspec.h b/arch/x86/include/asm/mpspec.h index f5a617956735..7bef40a01a1d 100644 --- a/arch/x86/include/asm/mpspec.h +++ b/arch/x86/include/asm/mpspec.h @@ -40,8 +40,6 @@ extern int mp_bus_id_to_type[MAX_MP_BUSSES]; extern DECLARE_BITMAP(mp_bus_not_pci, MAX_MP_BUSSES); extern unsigned int boot_cpu_physical_apicid; -extern unsigned int max_physical_apicid; -extern int mpc_default_type; extern unsigned long mp_lapic_addr; #ifdef CONFIG_X86_LOCAL_APIC @@ -88,15 +86,6 @@ static inline void early_reserve_e820_mpc_new(void) { } #endif int generic_processor_info(int apicid, int version); -#ifdef CONFIG_ACPI -extern void mp_register_ioapic(int id, u32 address, u32 gsi_base); -extern void mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, - u32 gsi); -extern void mp_config_acpi_legacy_irqs(void); -struct device; -extern int mp_register_gsi(struct device *dev, u32 gsi, int edge_level, - int active_high_low); -#endif /* CONFIG_ACPI */ #define PHYSID_ARRAY_SIZE BITS_TO_LONGS(MAX_LOCAL_APIC) @@ -163,6 +152,4 @@ extern physid_mask_t phys_cpu_present_map; extern int generic_mps_oem_check(struct mpc_table *, char *, char *); -extern int default_acpi_madt_oem_check(char *, char *); - #endif /* _ASM_X86_MPSPEC_H */ diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 86281ffb96d6..b41b47021f53 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -345,6 +345,10 @@ acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long e #endif /*CONFIG_X86_LOCAL_APIC */ #ifdef CONFIG_X86_IO_APIC +static void mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, + u32 gsi); +static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, + int polarity); static int __init acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) @@ -903,7 +907,8 @@ static int __init acpi_parse_madt_lapic_entries(void) #ifdef CONFIG_X86_IO_APIC #define MP_ISA_BUS 0 -void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi) +static void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, + u32 gsi) { int ioapic; int pin; @@ -938,7 +943,7 @@ void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi) isa_irq_to_gsi[bus_irq] = gsi; } -void __init mp_config_acpi_legacy_irqs(void) +static void __init mp_config_acpi_legacy_irqs(void) { int i; struct mpc_intsrc mp_irq; @@ -1040,7 +1045,8 @@ static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, return 0; } -int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) +static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, + int polarity) { int ioapic; int ioapic_pin; diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index ad28db7e6bde..ca1bd75e3de2 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -67,7 +67,7 @@ EXPORT_SYMBOL_GPL(boot_cpu_physical_apicid); /* * The highest APIC ID seen during enumeration. */ -unsigned int max_physical_apicid; +static unsigned int max_physical_apicid; /* * Bitmask of physically existing CPUs: -- cgit v1.2.3-58-ga151 From 8d7cdcb9d8f366c0567b66cce0d5ce37d3311aaf Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:33 +0800 Subject: x86, acpi: Reorganize code to avoid forward declaration in boot.c Reorganize code to avoid forward declaration in boot.c, no function changes. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Len Brown Cc: Pavel Machek Link: http://lkml.kernel.org/r/1402302011-23642-5-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/acpi/boot.c | 236 ++++++++++++++++++++++---------------------- 1 file changed, 116 insertions(+), 120 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index b41b47021f53..ceb3b36f2b2c 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -345,10 +345,123 @@ acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long e #endif /*CONFIG_X86_LOCAL_APIC */ #ifdef CONFIG_X86_IO_APIC -static void mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, - u32 gsi); +#define MP_ISA_BUS 0 + +static void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, + u32 gsi) +{ + int ioapic; + int pin; + struct mpc_intsrc mp_irq; + + /* + * Convert 'gsi' to 'ioapic.pin'. + */ + ioapic = mp_find_ioapic(gsi); + if (ioapic < 0) + return; + pin = mp_find_ioapic_pin(ioapic, gsi); + + /* + * TBD: This check is for faulty timer entries, where the override + * erroneously sets the trigger to level, resulting in a HUGE + * increase of timer interrupts! + */ + if ((bus_irq == 0) && (trigger == 3)) + trigger = 1; + + mp_irq.type = MP_INTSRC; + mp_irq.irqtype = mp_INT; + mp_irq.irqflag = (trigger << 2) | polarity; + mp_irq.srcbus = MP_ISA_BUS; + mp_irq.srcbusirq = bus_irq; /* IRQ */ + mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */ + mp_irq.dstirq = pin; /* INTIN# */ + + mp_save_irq(&mp_irq); + + isa_irq_to_gsi[bus_irq] = gsi; +} + +static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, + int polarity) +{ +#ifdef CONFIG_X86_MPPARSE + struct mpc_intsrc mp_irq; + struct pci_dev *pdev; + unsigned char number; + unsigned int devfn; + int ioapic; + u8 pin; + + if (!acpi_ioapic) + return 0; + if (!dev || !dev_is_pci(dev)) + return 0; + + pdev = to_pci_dev(dev); + number = pdev->bus->number; + devfn = pdev->devfn; + pin = pdev->pin; + /* print the entry should happen on mptable identically */ + mp_irq.type = MP_INTSRC; + mp_irq.irqtype = mp_INT; + mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | + (polarity == ACPI_ACTIVE_HIGH ? 1 : 3); + mp_irq.srcbus = number; + mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3); + ioapic = mp_find_ioapic(gsi); + mp_irq.dstapic = mpc_ioapic_id(ioapic); + mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi); + + mp_save_irq(&mp_irq); +#endif + return 0; +} + static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, - int polarity); + int polarity) +{ + int ioapic; + int ioapic_pin; + struct io_apic_irq_attr irq_attr; + int ret; + + if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) + return gsi; + + /* Don't set up the ACPI SCI because it's already set up */ + if (acpi_gbl_FADT.sci_interrupt == gsi) + return gsi; + + ioapic = mp_find_ioapic(gsi); + if (ioapic < 0) { + printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi); + return gsi; + } + + ioapic_pin = mp_find_ioapic_pin(ioapic, gsi); + + if (ioapic_pin > MP_MAX_IOAPIC_PIN) { + printk(KERN_ERR "Invalid reference to IOAPIC pin " + "%d-%d\n", mpc_ioapic_id(ioapic), + ioapic_pin); + return gsi; + } + + if (enable_update_mptable) + mp_config_acpi_gsi(dev, gsi, trigger, polarity); + + set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin, + trigger == ACPI_EDGE_SENSITIVE ? 0 : 1, + polarity == ACPI_ACTIVE_HIGH ? 0 : 1); + ret = io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr); + if (ret < 0) + gsi = INT_MIN; + + return gsi; +} + static int __init acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) @@ -905,44 +1018,6 @@ static int __init acpi_parse_madt_lapic_entries(void) #endif /* CONFIG_X86_LOCAL_APIC */ #ifdef CONFIG_X86_IO_APIC -#define MP_ISA_BUS 0 - -static void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, - u32 gsi) -{ - int ioapic; - int pin; - struct mpc_intsrc mp_irq; - - /* - * Convert 'gsi' to 'ioapic.pin'. - */ - ioapic = mp_find_ioapic(gsi); - if (ioapic < 0) - return; - pin = mp_find_ioapic_pin(ioapic, gsi); - - /* - * TBD: This check is for faulty timer entries, where the override - * erroneously sets the trigger to level, resulting in a HUGE - * increase of timer interrupts! - */ - if ((bus_irq == 0) && (trigger == 3)) - trigger = 1; - - mp_irq.type = MP_INTSRC; - mp_irq.irqtype = mp_INT; - mp_irq.irqflag = (trigger << 2) | polarity; - mp_irq.srcbus = MP_ISA_BUS; - mp_irq.srcbusirq = bus_irq; /* IRQ */ - mp_irq.dstapic = mpc_ioapic_id(ioapic); /* APIC ID */ - mp_irq.dstirq = pin; /* INTIN# */ - - mp_save_irq(&mp_irq); - - isa_irq_to_gsi[bus_irq] = gsi; -} - static void __init mp_config_acpi_legacy_irqs(void) { int i; @@ -1009,85 +1084,6 @@ static void __init mp_config_acpi_legacy_irqs(void) } } -static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, - int polarity) -{ -#ifdef CONFIG_X86_MPPARSE - struct mpc_intsrc mp_irq; - struct pci_dev *pdev; - unsigned char number; - unsigned int devfn; - int ioapic; - u8 pin; - - if (!acpi_ioapic) - return 0; - if (!dev || !dev_is_pci(dev)) - return 0; - - pdev = to_pci_dev(dev); - number = pdev->bus->number; - devfn = pdev->devfn; - pin = pdev->pin; - /* print the entry should happen on mptable identically */ - mp_irq.type = MP_INTSRC; - mp_irq.irqtype = mp_INT; - mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | - (polarity == ACPI_ACTIVE_HIGH ? 1 : 3); - mp_irq.srcbus = number; - mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3); - ioapic = mp_find_ioapic(gsi); - mp_irq.dstapic = mpc_ioapic_id(ioapic); - mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi); - - mp_save_irq(&mp_irq); -#endif - return 0; -} - -static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, - int polarity) -{ - int ioapic; - int ioapic_pin; - struct io_apic_irq_attr irq_attr; - int ret; - - if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) - return gsi; - - /* Don't set up the ACPI SCI because it's already set up */ - if (acpi_gbl_FADT.sci_interrupt == gsi) - return gsi; - - ioapic = mp_find_ioapic(gsi); - if (ioapic < 0) { - printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi); - return gsi; - } - - ioapic_pin = mp_find_ioapic_pin(ioapic, gsi); - - if (ioapic_pin > MP_MAX_IOAPIC_PIN) { - printk(KERN_ERR "Invalid reference to IOAPIC pin " - "%d-%d\n", mpc_ioapic_id(ioapic), - ioapic_pin); - return gsi; - } - - if (enable_update_mptable) - mp_config_acpi_gsi(dev, gsi, trigger, polarity); - - set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin, - trigger == ACPI_EDGE_SENSITIVE ? 0 : 1, - polarity == ACPI_ACTIVE_HIGH ? 0 : 1); - ret = io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr); - if (ret < 0) - gsi = INT_MIN; - - return gsi; -} - /* * Parse IOAPIC related entries in MADT * returns 0 on success, < 0 on error -- cgit v1.2.3-58-ga151 From 965cd0e4a5e5d704934fa6d476b1a4faa0417e1b Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:34 +0800 Subject: x86, PCI, ACPI: Use kmalloc_node() to optimize for performance Use kmalloc_node() instead of kmalloc() when possible to optimize for performance on NUMA platforms. Signed-off-by: Jiang Liu Acked-by: Bjorn Helgaas Acked-by: David Rientjes Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-6-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/pci/acpi.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c index 5075371ab593..cfd1b132b8e3 100644 --- a/arch/x86/pci/acpi.c +++ b/arch/x86/pci/acpi.c @@ -448,7 +448,7 @@ static void probe_pci_root_info(struct pci_root_info *info, return; size = sizeof(*info->res) * info->res_num; - info->res = kzalloc(size, GFP_KERNEL); + info->res = kzalloc_node(size, GFP_KERNEL, info->sd.node); if (!info->res) { info->res_num = 0; return; @@ -456,7 +456,7 @@ static void probe_pci_root_info(struct pci_root_info *info, size = sizeof(*info->res_offset) * info->res_num; info->res_num = 0; - info->res_offset = kzalloc(size, GFP_KERNEL); + info->res_offset = kzalloc_node(size, GFP_KERNEL, info->sd.node); if (!info->res_offset) { kfree(info->res); info->res = NULL; @@ -499,7 +499,7 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root) if (node != NUMA_NO_NODE && !node_online(node)) node = NUMA_NO_NODE; - info = kzalloc(sizeof(*info), GFP_KERNEL); + info = kzalloc_node(sizeof(*info), GFP_KERNEL, node); if (!info) { printk(KERN_WARNING "pci_bus %04x:%02x: " "ignored (out of memory)\n", domain, busnum); -- cgit v1.2.3-58-ga151 From 032329eebba86350849c027fe3a0b672558893d4 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:35 +0800 Subject: x86, acpi, irq: Kill static function irq_to_gsi() Static function irq_to_gsi() is only called by acpi_isa_irq_to_gsi(), so kill function irq_to_gsi() and simplify acpi_isa_irq_to_gsi(). Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Len Brown Cc: Pavel Machek Link: http://lkml.kernel.org/r/1402302011-23642-7-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/acpi/boot.c | 26 ++++++-------------------- 1 file changed, 6 insertions(+), 20 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index ceb3b36f2b2c..09682766d56a 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -120,22 +120,6 @@ static unsigned int gsi_to_irq(unsigned int gsi) return irq; } -static u32 irq_to_gsi(int irq) -{ - unsigned int gsi; - - if (irq < NR_IRQS_LEGACY) - gsi = isa_irq_to_gsi[irq]; - else if (irq < gsi_top) - gsi = irq; - else if (irq < (gsi_top + NR_IRQS_LEGACY)) - gsi = irq - gsi_top; - else - gsi = 0xffffffff; - - return gsi; -} - /* * This is just a simple wrapper around early_ioremap(), * with sanity checks for phys == 0 and size == 0. @@ -640,10 +624,12 @@ EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi) { - if (isa_irq >= 16) - return -1; - *gsi = irq_to_gsi(isa_irq); - return 0; + if (isa_irq < NR_IRQS_LEGACY) { + *gsi = isa_irq_to_gsi[isa_irq]; + return 0; + } + + return -1; } static int acpi_register_gsi_pic(struct device *dev, u32 gsi, -- cgit v1.2.3-58-ga151 From e819813f5cb98030bab38569abffd9354a1c1a82 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:36 +0800 Subject: x86, ACPI, trivial: Minor improvements to arch/x86/kernel/acpi/boot.c 1) Remove out-of-date comment 2) Kill unused function acpi_set_irq_model_pic() 3) Use NR_IRQS_LEGACY instead of hard-coded 16 4) Trivial syntax improvements Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Len Brown Cc: Pavel Machek Cc: Jiri Kosina Link: http://lkml.kernel.org/r/1402302011-23642-8-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/acpi/boot.c | 50 +++++++++++++++------------------------------ 1 file changed, 16 insertions(+), 34 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 09682766d56a..392360c607dc 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -483,11 +483,6 @@ static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; - /* - * mp_config_acpi_legacy_irqs() already setup IRQs < 16 - * If GSI is < 16, this will update its flags, - * else it will create a new mp_irqs[] entry. - */ mp_override_legacy_irq(bus_irq, polarity, trigger, gsi); /* @@ -686,14 +681,7 @@ void acpi_unregister_gsi(u32 gsi) } EXPORT_SYMBOL_GPL(acpi_unregister_gsi); -void __init acpi_set_irq_model_pic(void) -{ - acpi_irq_model = ACPI_IRQ_MODEL_PIC; - __acpi_register_gsi = acpi_register_gsi_pic; - acpi_ioapic = 0; -} - -void __init acpi_set_irq_model_ioapic(void) +static void __init acpi_set_irq_model_ioapic(void) { acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; __acpi_register_gsi = acpi_register_gsi_ioapic; @@ -932,9 +920,8 @@ static int __init early_acpi_parse_madt_lapic_addr_ovr(void) * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). */ - count = - acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, - acpi_parse_lapic_addr_ovr, 0); + count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, + acpi_parse_lapic_addr_ovr, 0); if (count < 0) { printk(KERN_ERR PREFIX "Error parsing LAPIC address override entry\n"); @@ -959,9 +946,8 @@ static int __init acpi_parse_madt_lapic_entries(void) * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). */ - count = - acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, - acpi_parse_lapic_addr_ovr, 0); + count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, + acpi_parse_lapic_addr_ovr, 0); if (count < 0) { printk(KERN_ERR PREFIX "Error parsing LAPIC address override entry\n"); @@ -989,11 +975,10 @@ static int __init acpi_parse_madt_lapic_entries(void) return count; } - x2count = - acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI, - acpi_parse_x2apic_nmi, 0); - count = - acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0); + x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI, + acpi_parse_x2apic_nmi, 0); + count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, + acpi_parse_lapic_nmi, 0); if (count < 0 || x2count < 0) { printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); /* TBD: Cleanup to allow fallback to MPS */ @@ -1022,7 +1007,7 @@ static void __init mp_config_acpi_legacy_irqs(void) * Use the default configuration for the IRQs 0-15. Unless * overridden by (MADT) interrupt source override entries. */ - for (i = 0; i < 16; i++) { + for (i = 0; i < NR_IRQS_LEGACY; i++) { int ioapic, pin; unsigned int dstapic; int idx; @@ -1099,9 +1084,8 @@ static int __init acpi_parse_madt_ioapic_entries(void) return -ENODEV; } - count = - acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, - MAX_IO_APICS); + count = acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, + MAX_IO_APICS); if (!count) { printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); return -ENODEV; @@ -1110,9 +1094,8 @@ static int __init acpi_parse_madt_ioapic_entries(void) return count; } - count = - acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, - nr_irqs); + count = acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, + acpi_parse_int_src_ovr, nr_irqs); if (count < 0) { printk(KERN_ERR PREFIX "Error parsing interrupt source overrides entry\n"); @@ -1131,9 +1114,8 @@ static int __init acpi_parse_madt_ioapic_entries(void) /* Fill in identity legacy mappings where no override */ mp_config_acpi_legacy_irqs(); - count = - acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, - nr_irqs); + count = acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, + acpi_parse_nmi_src, nr_irqs); if (count < 0) { printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); /* TBD: Cleanup to allow fallback to MPS */ -- cgit v1.2.3-58-ga151 From 2c0a6894df19515baf9d2bf0076a2b57c8b51efb Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Tue, 10 Jun 2014 14:11:23 +0800 Subject: x86, ACPI, irq: Enhance error handling in function acpi_register_gsi() Function mp_register_gsi() may return error code when failed to look up or program corresponding IOAPIC pin for GSI, so enhance acpi_register_gsi() to handle possible error cases. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Len Brown Cc: Pavel Machek Link: http://lkml.kernel.org/r/1402380683-32345-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/acpi/boot.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 392360c607dc..298f79616f1c 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -97,6 +97,8 @@ static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }; +#define ACPI_INVALID_GSI INT_MIN + static unsigned int gsi_to_irq(unsigned int gsi) { unsigned int irq = gsi + NR_IRQS_LEGACY; @@ -441,7 +443,7 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, polarity == ACPI_ACTIVE_HIGH ? 0 : 1); ret = io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr); if (ret < 0) - gsi = INT_MIN; + gsi = ACPI_INVALID_GSI; return gsi; } @@ -666,13 +668,13 @@ int (*acpi_suspend_lowlevel)(void); */ int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) { - unsigned int irq; - unsigned int plat_gsi = gsi; + unsigned int plat_gsi; - plat_gsi = (*__acpi_register_gsi)(dev, gsi, trigger, polarity); - irq = gsi_to_irq(plat_gsi); + plat_gsi = __acpi_register_gsi(dev, gsi, trigger, polarity); + if (plat_gsi != ACPI_INVALID_GSI) + return gsi_to_irq(plat_gsi); - return irq; + return -1; } EXPORT_SYMBOL_GPL(acpi_register_gsi); -- cgit v1.2.3-58-ga151 From 2e0ad0e2c13534f1a0e7f63661e666c281e09b66 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:38 +0800 Subject: x86, ACPI, irq: Fix possible eror in GSI to IRQ mapping for legacy IRQ A default identity mapping between GSI and IRQ is built for legacy IRQs. So when overriding the default identity mapping for legacy IRQs, we should also invalidate isa_irq_to_gsi[gsi] when setting isa_irq_to_gsi[irq] = gsi. Otherwise there may be two entries with the same GSI in the isa_irq_to_gsi array, and acpi_isa_irq_to_gsi() may give wrong result. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Len Brown Cc: Pavel Machek Link: http://lkml.kernel.org/r/1402302011-23642-10-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/acpi/boot.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 298f79616f1c..f3bafcd32b98 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -366,6 +366,13 @@ static void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, mp_save_irq(&mp_irq); + /* + * Reset default identity mapping if gsi is also an legacy IRQ, + * otherwise there will be more than one entry with the same GSI + * and acpi_isa_irq_to_gsi() may give wrong result. + */ + if (gsi < NR_IRQS_LEGACY && isa_irq_to_gsi[gsi] == gsi) + isa_irq_to_gsi[gsi] = ACPI_INVALID_GSI; isa_irq_to_gsi[bus_irq] = gsi; } @@ -621,7 +628,8 @@ EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi) { - if (isa_irq < NR_IRQS_LEGACY) { + if (isa_irq < NR_IRQS_LEGACY && + isa_irq_to_gsi[isa_irq] != ACPI_INVALID_GSI) { *gsi = isa_irq_to_gsi[isa_irq]; return 0; } -- cgit v1.2.3-58-ga151 From 3eb2be5f49fdeac5ea2880aec90008f0a8250029 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:39 +0800 Subject: x86, irq, trivial: Minor improvements of IRQ related code 1) Kill unused MAX_HARDIRQS_PER_CPU. 2) Improve function prototype declararions. 3) Simple typo fix, change "gsit" to "gsi". 4) Use macro VECTOR_UNDEFINED instead of hard-coded -1. 5) Kill redundant comments. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Jiri Kosina Link: http://lkml.kernel.org/r/1402302011-23642-11-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/hardirq.h | 3 --- arch/x86/include/asm/io_apic.h | 16 +++++++--------- arch/x86/kernel/apic/io_apic.c | 21 +++++---------------- 3 files changed, 12 insertions(+), 28 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/hardirq.h b/arch/x86/include/asm/hardirq.h index 230853da4ec0..0f5fb6b6567e 100644 --- a/arch/x86/include/asm/hardirq.h +++ b/arch/x86/include/asm/hardirq.h @@ -40,9 +40,6 @@ typedef struct { DECLARE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat); -/* We can have at most NR_VECTORS irqs routed to a cpu at a time */ -#define MAX_HARDIRQS_PER_CPU NR_VECTORS - #define __ARCH_IRQ_STAT #define inc_irq_stat(member) this_cpu_inc(irq_stat.member) diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index 9121abbc8c8f..8dd1e13f2989 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -144,12 +144,9 @@ struct io_apic_irq_attr; struct irq_cfg; extern int io_apic_set_pci_routing(struct device *dev, int irq, struct io_apic_irq_attr *irq_attr); -void setup_IO_APIC_irq_extra(u32 gsi); +extern void setup_IO_APIC_irq_extra(u32 gsi); extern void ioapic_insert_resources(void); -extern int native_setup_ioapic_entry(int, struct IO_APIC_route_entry *, - unsigned int, int, - struct io_apic_irq_attr *); extern int native_setup_ioapic_entry(int, struct IO_APIC_route_entry *, unsigned int, int, struct io_apic_irq_attr *); @@ -159,7 +156,8 @@ extern void native_compose_msi_msg(struct pci_dev *pdev, unsigned int irq, unsigned int dest, struct msi_msg *msg, u8 hpet_id); extern void native_eoi_ioapic_pin(int apic, int pin, int vector); -int io_apic_setup_irq_pin_once(unsigned int irq, int node, struct io_apic_irq_attr *attr); +extern int io_apic_setup_irq_pin_once(unsigned int irq, int node, + struct io_apic_irq_attr *attr); extern int save_ioapic_entries(void); extern void mask_ioapic_entries(void); @@ -172,11 +170,11 @@ struct mp_ioapic_gsi{ u32 gsi_base; u32 gsi_end; }; -extern struct mp_ioapic_gsi mp_gsi_routing[]; extern u32 gsi_top; -int mp_find_ioapic(u32 gsi); -int mp_find_ioapic_pin(int ioapic, u32 gsi); -void __init mp_register_ioapic(int id, u32 address, u32 gsi_base); + +extern int mp_find_ioapic(u32 gsi); +extern int mp_find_ioapic_pin(int ioapic, u32 gsi); +extern void __init mp_register_ioapic(int id, u32 address, u32 gsi_base); extern void __init pre_init_apic_IRQ0(void); extern void mp_save_irq(struct mpc_intsrc *m); diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 81e08eff05ee..f3390424d86e 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -1010,7 +1010,7 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin, break; if (!test_bit(lbus, mp_bus_not_pci) && - !mp_irqs[i].irqtype && + mp_irqs[i].irqtype == mp_INT && (bus == lbus) && (slot == ((mp_irqs[i].srcbusirq >> 2) & 0x1f))) { int irq = pin_2_irq(i, ioapic_idx, mp_irqs[i].dstirq); @@ -1359,7 +1359,7 @@ static void __init __io_apic_setup_irqs(unsigned int ioapic_idx) irq = pin_2_irq(idx, ioapic_idx, pin); - if ((ioapic_idx > 0) && (irq > 16)) + if ((ioapic_idx > 0) && (irq > NR_IRQS_LEGACY)) continue; /* @@ -1388,7 +1388,7 @@ static void __init setup_IO_APIC_irqs(void) } /* - * for the gsit that is not in first ioapic + * for the gsi that is not in first ioapic * but could not use acpi_register_gsi() * like some special sci in IBM x3330 */ @@ -2225,7 +2225,7 @@ asmlinkage __visible void smp_irq_move_cleanup_interrupt(void) apic->send_IPI_self(IRQ_MOVE_CLEANUP_VECTOR); goto unlock; } - __this_cpu_write(vector_irq[vector], -1); + __this_cpu_write(vector_irq[vector], VECTOR_UNDEFINED); unlock: raw_spin_unlock(&desc->lock); } @@ -2514,17 +2514,6 @@ static inline void init_IO_APIC_traps(void) struct irq_cfg *cfg; unsigned int irq; - /* - * NOTE! The local APIC isn't very good at handling - * multiple interrupts at the same interrupt level. - * As the interrupt level is determined by taking the - * vector number and shifting that right by 4, we - * want to spread these out a bit so that they don't - * all fall in the same interrupt level. - * - * Also, we've got to be careful not to trash gate - * 0x80, because int 0x80 is hm, kind of importantish. ;) - */ for_each_active_irq(irq) { cfg = irq_get_chip_data(irq); if (IO_APIC_IRQ(irq) && cfg && !cfg->vector) { @@ -3550,7 +3539,7 @@ void __init setup_ioapic_dest(void) continue; irq = pin_2_irq(irq_entry, ioapic, pin); - if ((ioapic > 0) && (irq > 16)) + if ((ioapic > 0) && (irq > NR_IRQS_LEGACY)) continue; idata = irq_get_irq_data(irq); -- cgit v1.2.3-58-ga151 From 4035ed0134b2dc545a0b22e3c052f684786649d4 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:40 +0800 Subject: x86, ioapic: Kill unused global variable timer_through_8259 Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-12-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/io_apic.h | 4 ---- arch/x86/kernel/apic/io_apic.c | 3 --- 2 files changed, 7 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index 8dd1e13f2989..de3d8b04cf64 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -130,9 +130,6 @@ extern int noioapicquirk; /* -1 if "noapic" boot option passed */ extern int noioapicreroute; -/* 1 if the timer IRQ uses the '8259A Virtual Wire' mode */ -extern int timer_through_8259; - /* * If we use the IO-APIC for IRQ routing, disable automatic * assignment of PCI IRQ's. @@ -212,7 +209,6 @@ extern void io_apic_eoi(unsigned int apic, unsigned int vector); #define io_apic_assign_pci_irqs 0 #define setup_ioapic_ids_from_mpc x86_init_noop -static const int timer_through_8259 = 0; static inline void ioapic_insert_resources(void) { } #define gsi_top (NR_IRQS_LEGACY) static inline int mp_find_ioapic(u32 gsi) { return 0; } diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index f3390424d86e..18ab95b6f1db 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -2638,8 +2638,6 @@ static int __init disable_timer_pin_setup(char *arg) } early_param("disable_timer_pin_1", disable_timer_pin_setup); -int timer_through_8259 __initdata; - /* * This code may look a bit paranoid, but it's supposed to cooperate with * a wide range of boards and BIOS bugs. Fortunately only the timer IRQ @@ -2744,7 +2742,6 @@ static inline void __init check_timer(void) legacy_pic->unmask(0); if (timer_irq_works()) { apic_printk(APIC_QUIET, KERN_INFO "....... works.\n"); - timer_through_8259 = 1; goto out; } /* -- cgit v1.2.3-58-ga151 From 518b2c63fcdde0723d2719bbe5b14086bdc8ec80 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:41 +0800 Subject: x86, ioapic: Kill static variable nr_irqs_gsi Static variable nr_irqs_gsi is used to maintain the lowest dynamic allocatable IRQ number. It may cause trouble when enabling dynamic IRQ allocation for IOAPIC, so use arch_dynirq_lower_bound() to avoid directly accessing nr_irqs_gsi and kill nr_irqs_gsi. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-13-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/apic/io_apic.c | 24 +++++------------------- 1 file changed, 5 insertions(+), 19 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 18ab95b6f1db..46d09eac1777 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -118,9 +118,6 @@ struct mpc_intsrc mp_irqs[MAX_IRQ_SOURCES]; /* # of MP IRQ source entries */ int mp_irq_entries; -/* GSI interrupts */ -static int nr_irqs_gsi = NR_IRQS_LEGACY; - #ifdef CONFIG_EISA int mp_bus_id_to_type[MAX_MP_BUSSES]; #endif @@ -3326,20 +3323,11 @@ static int __init io_apic_get_redir_entries(int ioapic) return reg_01.bits.entries + 1; } -static void __init probe_nr_irqs_gsi(void) -{ - int nr; - - nr = gsi_top + NR_IRQS_LEGACY; - if (nr > nr_irqs_gsi) - nr_irqs_gsi = nr; - - printk(KERN_DEBUG "nr_irqs_gsi: %d\n", nr_irqs_gsi); -} - unsigned int arch_dynirq_lower_bound(unsigned int from) { - return from < nr_irqs_gsi ? nr_irqs_gsi : from; + unsigned int min = gsi_top + NR_IRQS_LEGACY; + + return from < min ? min : from; } int __init arch_probe_nr_irqs(void) @@ -3349,12 +3337,12 @@ int __init arch_probe_nr_irqs(void) if (nr_irqs > (NR_VECTORS * nr_cpu_ids)) nr_irqs = NR_VECTORS * nr_cpu_ids; - nr = nr_irqs_gsi + 8 * nr_cpu_ids; + nr = (gsi_top + NR_IRQS_LEGACY) + 8 * nr_cpu_ids; #if defined(CONFIG_PCI_MSI) || defined(CONFIG_HT_IRQ) /* * for MSI and HT dyn irq */ - nr += nr_irqs_gsi * 16; + nr += (gsi_top + NR_IRQS_LEGACY) * 16; #endif if (nr < nr_irqs) nr_irqs = nr; @@ -3627,8 +3615,6 @@ fake_ioapic_page: ioapic_res->end = ioapic_phys + IO_APIC_SLOT_SIZE - 1; ioapic_res++; } - - probe_nr_irqs_gsi(); } void __init ioapic_insert_resources(void) -- cgit v1.2.3-58-ga151 From f44d16929638a6dc34bdd51e7422e7e3c1d0b904 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:42 +0800 Subject: x86, ioapic: Introduce helper utilities to walk ioapics and pins Introduce helper utilities for_each_ioapic(), for_each_ioapic_reverse(), for_each_pin() and for_each_ioapic_pin() to walk ioapics and pins. They will be rewritten e will rewrite later to support IOAPIC hotplug. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-14-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/apic/io_apic.c | 120 +++++++++++++++++++++-------------------- 1 file changed, 62 insertions(+), 58 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 46d09eac1777..16b0247392a5 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -62,6 +62,16 @@ #define __apicdebuginit(type) static type __init +#define for_each_ioapic(idx) \ + for ((idx) = 0; (idx) < nr_ioapics; (idx)++) +#define for_each_ioapic_reverse(idx) \ + for ((idx) = nr_ioapics - 1; (idx) >= 0; (idx)--) +#define for_each_pin(idx, pin) \ + for ((pin) = 0; (pin) < ioapics[(idx)].nr_registers; (pin)++) +#define for_each_ioapic_pin(idx, pin) \ + for_each_ioapic((idx)) \ + for_each_pin((idx), (pin)) + #define for_each_irq_pin(entry, head) \ for (entry = head; entry; entry = entry->next) @@ -191,7 +201,7 @@ int __init arch_early_irq_init(void) if (!legacy_pic->nr_legacy_irqs) io_apic_irqs = ~0UL; - for (i = 0; i < nr_ioapics; i++) { + for_each_ioapic(i) { ioapics[i].saved_registers = kzalloc(sizeof(struct IO_APIC_route_entry) * ioapics[i].nr_registers, GFP_KERNEL); @@ -624,9 +634,8 @@ static void clear_IO_APIC (void) { int apic, pin; - for (apic = 0; apic < nr_ioapics; apic++) - for (pin = 0; pin < ioapics[apic].nr_registers; pin++) - clear_IO_APIC_pin(apic, pin); + for_each_ioapic_pin(apic, pin) + clear_IO_APIC_pin(apic, pin); } #ifdef CONFIG_X86_32 @@ -675,13 +684,13 @@ int save_ioapic_entries(void) int apic, pin; int err = 0; - for (apic = 0; apic < nr_ioapics; apic++) { + for_each_ioapic(apic) { if (!ioapics[apic].saved_registers) { err = -ENOMEM; continue; } - for (pin = 0; pin < ioapics[apic].nr_registers; pin++) + for_each_pin(apic, pin) ioapics[apic].saved_registers[pin] = ioapic_read_entry(apic, pin); } @@ -696,11 +705,11 @@ void mask_ioapic_entries(void) { int apic, pin; - for (apic = 0; apic < nr_ioapics; apic++) { + for_each_ioapic(apic) { if (!ioapics[apic].saved_registers) continue; - for (pin = 0; pin < ioapics[apic].nr_registers; pin++) { + for_each_pin(apic, pin) { struct IO_APIC_route_entry entry; entry = ioapics[apic].saved_registers[pin]; @@ -719,11 +728,11 @@ int restore_ioapic_entries(void) { int apic, pin; - for (apic = 0; apic < nr_ioapics; apic++) { + for_each_ioapic(apic) { if (!ioapics[apic].saved_registers) continue; - for (pin = 0; pin < ioapics[apic].nr_registers; pin++) + for_each_pin(apic, pin) ioapic_write_entry(apic, pin, ioapics[apic].saved_registers[pin]); } @@ -782,7 +791,7 @@ static int __init find_isa_irq_apic(int irq, int type) if (i < mp_irq_entries) { int ioapic_idx; - for (ioapic_idx = 0; ioapic_idx < nr_ioapics; ioapic_idx++) + for_each_ioapic(ioapic_idx) if (mpc_ioapic_id(ioapic_idx) == mp_irqs[i].dstapic) return ioapic_idx; } @@ -1001,7 +1010,7 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin, for (i = 0; i < mp_irq_entries; i++) { int lbus = mp_irqs[i].srcbus; - for (ioapic_idx = 0; ioapic_idx < nr_ioapics; ioapic_idx++) + for_each_ioapic(ioapic_idx) if (mpc_ioapic_id(ioapic_idx) == mp_irqs[i].dstapic || mp_irqs[i].dstapic == MP_APIC_ALL) break; @@ -1224,12 +1233,10 @@ static inline int IO_APIC_irq_trigger(int irq) { int apic, idx, pin; - for (apic = 0; apic < nr_ioapics; apic++) { - for (pin = 0; pin < ioapics[apic].nr_registers; pin++) { - idx = find_irq_entry(apic, pin, mp_INT); - if ((idx != -1) && (irq == pin_2_irq(idx, apic, pin))) - return irq_trigger(idx); - } + for_each_ioapic_pin(apic, pin) { + idx = find_irq_entry(apic, pin, mp_INT); + if ((idx != -1) && (irq == pin_2_irq(idx, apic, pin))) + return irq_trigger(idx); } /* * nonexistent IRQs are edge default @@ -1349,7 +1356,7 @@ static void __init __io_apic_setup_irqs(unsigned int ioapic_idx) struct io_apic_irq_attr attr; unsigned int pin, irq; - for (pin = 0; pin < ioapics[ioapic_idx].nr_registers; pin++) { + for_each_pin(ioapic_idx, pin) { idx = find_irq_entry(ioapic_idx, pin, mp_INT); if (io_apic_pin_not_connected(idx, ioapic_idx, pin)) continue; @@ -1380,7 +1387,7 @@ static void __init setup_IO_APIC_irqs(void) apic_printk(APIC_VERBOSE, KERN_DEBUG "init IO_APIC IRQs\n"); - for (ioapic_idx = 0; ioapic_idx < nr_ioapics; ioapic_idx++) + for_each_ioapic(ioapic_idx) __io_apic_setup_irqs(ioapic_idx); } @@ -1583,7 +1590,7 @@ __apicdebuginit(void) print_IO_APICs(void) struct irq_chip *chip; printk(KERN_DEBUG "number of MP IRQ sources: %d.\n", mp_irq_entries); - for (ioapic_idx = 0; ioapic_idx < nr_ioapics; ioapic_idx++) + for_each_ioapic(ioapic_idx) printk(KERN_DEBUG "number of IO-APIC #%d registers: %d.\n", mpc_ioapic_id(ioapic_idx), ioapics[ioapic_idx].nr_registers); @@ -1594,7 +1601,7 @@ __apicdebuginit(void) print_IO_APICs(void) */ printk(KERN_INFO "testing the IO APIC.......................\n"); - for (ioapic_idx = 0; ioapic_idx < nr_ioapics; ioapic_idx++) + for_each_ioapic(ioapic_idx) print_IO_APIC(ioapic_idx); printk(KERN_DEBUG "IRQ to pin mappings:\n"); @@ -1825,26 +1832,22 @@ static struct { int pin, apic; } ioapic_i8259 = { -1, -1 }; void __init enable_IO_APIC(void) { int i8259_apic, i8259_pin; - int apic; + int apic, pin; if (!legacy_pic->nr_legacy_irqs) return; - for(apic = 0; apic < nr_ioapics; apic++) { - int pin; + for_each_ioapic_pin(apic, pin) { /* See if any of the pins is in ExtINT mode */ - for (pin = 0; pin < ioapics[apic].nr_registers; pin++) { - struct IO_APIC_route_entry entry; - entry = ioapic_read_entry(apic, pin); + struct IO_APIC_route_entry entry = ioapic_read_entry(apic, pin); - /* If the interrupt line is enabled and in ExtInt mode - * I have found the pin where the i8259 is connected. - */ - if ((entry.mask == 0) && (entry.delivery_mode == dest_ExtINT)) { - ioapic_i8259.apic = apic; - ioapic_i8259.pin = pin; - goto found_i8259; - } + /* If the interrupt line is enabled and in ExtInt mode + * I have found the pin where the i8259 is connected. + */ + if ((entry.mask == 0) && (entry.delivery_mode == dest_ExtINT)) { + ioapic_i8259.apic = apic; + ioapic_i8259.pin = pin; + goto found_i8259; } } found_i8259: @@ -1947,7 +1950,7 @@ void __init setup_ioapic_ids_from_mpc_nocheck(void) /* * Set the IOAPIC ID to the value stored in the MPC table. */ - for (ioapic_idx = 0; ioapic_idx < nr_ioapics; ioapic_idx++) { + for_each_ioapic(ioapic_idx) { /* Read the register 0 value */ raw_spin_lock_irqsave(&ioapic_lock, flags); reg_00.raw = io_apic_read(ioapic_idx, 0); @@ -2863,7 +2866,7 @@ static void ioapic_resume(void) { int ioapic_idx; - for (ioapic_idx = nr_ioapics - 1; ioapic_idx >= 0; ioapic_idx--) + for_each_ioapic_reverse(ioapic_idx) resume_ioapic_id(ioapic_idx); restore_ioapic_entries(); @@ -3457,9 +3460,8 @@ static u8 __init io_apic_unique_id(u8 id) DECLARE_BITMAP(used, 256); bitmap_zero(used, 256); - for (i = 0; i < nr_ioapics; i++) { + for_each_ioapic(i) __set_bit(mpc_ioapic_id(i), used); - } if (!test_bit(id, used)) return id; return find_first_zero_bit(used, 256); @@ -3517,8 +3519,7 @@ void __init setup_ioapic_dest(void) if (skip_ioapic_setup == 1) return; - for (ioapic = 0; ioapic < nr_ioapics; ioapic++) - for (pin = 0; pin < ioapics[ioapic].nr_registers; pin++) { + for_each_ioapic_pin(ioapic, pin) { irq_entry = find_irq_entry(ioapic, pin, mp_INT); if (irq_entry == -1) continue; @@ -3547,29 +3548,33 @@ void __init setup_ioapic_dest(void) static struct resource *ioapic_resources; -static struct resource * __init ioapic_setup_resources(int nr_ioapics) +static struct resource * __init ioapic_setup_resources(void) { unsigned long n; struct resource *res; char *mem; - int i; + int i, num = 0; - if (nr_ioapics <= 0) + for_each_ioapic(i) + num++; + if (num == 0) return NULL; n = IOAPIC_RESOURCE_NAME_SIZE + sizeof(struct resource); - n *= nr_ioapics; + n *= num; mem = alloc_bootmem(n); res = (void *)mem; - mem += sizeof(struct resource) * nr_ioapics; + mem += sizeof(struct resource) * num; - for (i = 0; i < nr_ioapics; i++) { - res[i].name = mem; - res[i].flags = IORESOURCE_MEM | IORESOURCE_BUSY; + num = 0; + for_each_ioapic(i) { + res[num].name = mem; + res[num].flags = IORESOURCE_MEM | IORESOURCE_BUSY; snprintf(mem, IOAPIC_RESOURCE_NAME_SIZE, "IOAPIC %u", i); mem += IOAPIC_RESOURCE_NAME_SIZE; + num++; } ioapic_resources = res; @@ -3583,8 +3588,8 @@ void __init native_io_apic_init_mappings(void) struct resource *ioapic_res; int i; - ioapic_res = ioapic_setup_resources(nr_ioapics); - for (i = 0; i < nr_ioapics; i++) { + ioapic_res = ioapic_setup_resources(); + for_each_ioapic(i) { if (smp_found_config) { ioapic_phys = mpc_ioapic_addr(i); #ifdef CONFIG_X86_32 @@ -3629,7 +3634,7 @@ void __init ioapic_insert_resources(void) return; } - for (i = 0; i < nr_ioapics; i++) { + for_each_ioapic(i) { insert_resource(&iomem_resource, r); r++; } @@ -3637,16 +3642,15 @@ void __init ioapic_insert_resources(void) int mp_find_ioapic(u32 gsi) { - int i = 0; + int i; if (nr_ioapics == 0) return -1; /* Find the IOAPIC that manages this GSI. */ - for (i = 0; i < nr_ioapics; i++) { + for_each_ioapic(i) { struct mp_ioapic_gsi *gsi_cfg = mp_ioapic_gsi_routing(i); - if ((gsi >= gsi_cfg->gsi_base) - && (gsi <= gsi_cfg->gsi_end)) + if (gsi >= gsi_cfg->gsi_base && gsi <= gsi_cfg->gsi_end) return i; } @@ -3658,7 +3662,7 @@ int mp_find_ioapic_pin(int ioapic, u32 gsi) { struct mp_ioapic_gsi *gsi_cfg; - if (WARN_ON(ioapic == -1)) + if (WARN_ON(ioapic < 0)) return -1; gsi_cfg = mp_ioapic_gsi_routing(ioapic); -- cgit v1.2.3-58-ga151 From 32f5ef5d8dd5ac3cc7ac12cdaf33023e2fbd33c1 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:43 +0800 Subject: x86, ioapic: Use irq_cfg() instead of irq_get_chip_data() for better readability Use defined helper function irq_cfg() instead of irq_get_chip_data() for better readability. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-15-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/apic/io_apic.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 16b0247392a5..446a931d5f44 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -230,7 +230,7 @@ int __init arch_early_irq_init(void) return 0; } -static struct irq_cfg *irq_cfg(unsigned int irq) +static inline struct irq_cfg *irq_cfg(unsigned int irq) { return irq_get_chip_data(irq); } @@ -272,7 +272,7 @@ static struct irq_cfg *alloc_irq_and_cfg_at(unsigned int at, int node) if (res < 0) { if (res != -EEXIST) return NULL; - cfg = irq_get_chip_data(at); + cfg = irq_cfg(at); if (cfg) return cfg; } @@ -1204,7 +1204,7 @@ void __setup_vector_irq(int cpu) raw_spin_lock(&vector_lock); /* Mark the inuse vectors */ for_each_active_irq(irq) { - cfg = irq_get_chip_data(irq); + cfg = irq_cfg(irq); if (!cfg) continue; @@ -1612,7 +1612,7 @@ __apicdebuginit(void) print_IO_APICs(void) if (chip != &ioapic_chip) continue; - cfg = irq_get_chip_data(irq); + cfg = irq_cfg(irq); if (!cfg) continue; entry = cfg->irq_2_pin; @@ -2253,7 +2253,7 @@ static void irq_complete_move(struct irq_cfg *cfg) void irq_force_complete_move(int irq) { - struct irq_cfg *cfg = irq_get_chip_data(irq); + struct irq_cfg *cfg = irq_cfg(irq); if (!cfg) return; @@ -2515,7 +2515,7 @@ static inline void init_IO_APIC_traps(void) unsigned int irq; for_each_active_irq(irq) { - cfg = irq_get_chip_data(irq); + cfg = irq_cfg(irq); if (IO_APIC_IRQ(irq) && cfg && !cfg->vector) { /* * Hmm.. We don't have an entry for this, @@ -2648,7 +2648,7 @@ early_param("disable_timer_pin_1", disable_timer_pin_setup); */ static inline void __init check_timer(void) { - struct irq_cfg *cfg = irq_get_chip_data(0); + struct irq_cfg *cfg = irq_cfg(0); int node = cpu_to_node(0); int apic1, pin1, apic2, pin2; unsigned long flags; @@ -2912,7 +2912,7 @@ int arch_setup_hwirq(unsigned int irq, int node) void arch_teardown_hwirq(unsigned int irq) { - struct irq_cfg *cfg = irq_get_chip_data(irq); + struct irq_cfg *cfg = irq_cfg(irq); unsigned long flags; free_remapped_irq(irq); @@ -3039,7 +3039,7 @@ int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, if (!irq_offset) write_msi_msg(irq, &msg); - setup_remapped_irq(irq, irq_get_chip_data(irq), chip); + setup_remapped_irq(irq, irq_cfg(irq), chip); irq_set_chip_and_handler_name(irq, chip, handle_edge_irq, "edge"); @@ -3178,7 +3178,7 @@ int default_setup_hpet_msi(unsigned int irq, unsigned int id) hpet_msi_write(irq_get_handler_data(irq), &msg); irq_set_status_flags(irq, IRQ_MOVE_PCNTXT); - setup_remapped_irq(irq, irq_get_chip_data(irq), chip); + setup_remapped_irq(irq, irq_cfg(irq), chip); irq_set_chip_and_handler_name(irq, chip, handle_edge_irq, "edge"); return 0; -- cgit v1.2.3-58-ga151 From 79598505aee61bc943955de3653be054c2f7393f Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:44 +0800 Subject: x86, irq: Reorganize IO_APIC_get_PCI_irq_vector() to prepare for irqdomain Reorganize function IO_APIC_get_PCI_irq_vector() a bit to better support coming irqdomain. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-16-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/apic/io_apic.c | 61 +++++++++++++++++++++++------------------- 1 file changed, 33 insertions(+), 28 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 446a931d5f44..09e5c7b4df5a 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -997,7 +997,7 @@ static int pin_2_irq(int idx, int apic, int pin) int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin, struct io_apic_irq_attr *irq_attr) { - int ioapic_idx, i, best_guess = -1; + int irq, i, best_guess = -1; apic_printk(APIC_DEBUG, "querying PCI -> IRQ mapping bus:%d, slot:%d, pin:%d.\n", @@ -1007,41 +1007,46 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin, "PCI BIOS passed nonexistent PCI bus %d!\n", bus); return -1; } + for (i = 0; i < mp_irq_entries; i++) { int lbus = mp_irqs[i].srcbus; + int ioapic_idx, found = 0; + + if (bus != lbus || mp_irqs[i].irqtype != mp_INT || + slot != ((mp_irqs[i].srcbusirq >> 2) & 0x1f)) + continue; for_each_ioapic(ioapic_idx) if (mpc_ioapic_id(ioapic_idx) == mp_irqs[i].dstapic || - mp_irqs[i].dstapic == MP_APIC_ALL) + mp_irqs[i].dstapic == MP_APIC_ALL) { + found = 1; break; + } + if (!found) + continue; - if (!test_bit(lbus, mp_bus_not_pci) && - mp_irqs[i].irqtype == mp_INT && - (bus == lbus) && - (slot == ((mp_irqs[i].srcbusirq >> 2) & 0x1f))) { - int irq = pin_2_irq(i, ioapic_idx, mp_irqs[i].dstirq); - - if (!(ioapic_idx || IO_APIC_IRQ(irq))) - continue; + /* Skip ISA IRQs */ + irq = pin_2_irq(i, ioapic_idx, mp_irqs[i].dstirq); + if (ioapic_idx == 0 && !IO_APIC_IRQ(irq)) + continue; - if (pin == (mp_irqs[i].srcbusirq & 3)) { - set_io_apic_irq_attr(irq_attr, ioapic_idx, - mp_irqs[i].dstirq, - irq_trigger(i), - irq_polarity(i)); - return irq; - } - /* - * Use the first all-but-pin matching entry as a - * best-guess fuzzy result for broken mptables. - */ - if (best_guess < 0) { - set_io_apic_irq_attr(irq_attr, ioapic_idx, - mp_irqs[i].dstirq, - irq_trigger(i), - irq_polarity(i)); - best_guess = irq; - } + if (pin == (mp_irqs[i].srcbusirq & 3)) { + set_io_apic_irq_attr(irq_attr, ioapic_idx, + mp_irqs[i].dstirq, + irq_trigger(i), + irq_polarity(i)); + return irq; + } + /* + * Use the first all-but-pin matching entry as a + * best-guess fuzzy result for broken mptables. + */ + if (best_guess < 0) { + set_io_apic_irq_attr(irq_attr, ioapic_idx, + mp_irqs[i].dstirq, + irq_trigger(i), + irq_polarity(i)); + best_guess = irq; } } return best_guess; -- cgit v1.2.3-58-ga151 From 18e485518656205bbffce5e01f07830a6c3f557d Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:45 +0800 Subject: x86, irq: Introduce some helper utilities to improve readability It also fixes an off by one bug in if ((ioapic_idx > 0) && (irq > NR_IRQS_LEGACY)) It should be if ((ioapic_idx > 0) && (irq >= NR_IRQS_LEGACY)) Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-17-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/io_apic.h | 2 ++ arch/x86/kernel/apic/io_apic.c | 29 ++++++++++++++++++++++------- 2 files changed, 24 insertions(+), 7 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index de3d8b04cf64..b775cf3622c3 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -171,6 +171,7 @@ extern u32 gsi_top; extern int mp_find_ioapic(u32 gsi); extern int mp_find_ioapic_pin(int ioapic, u32 gsi); +extern u32 mp_pin_to_gsi(int ioapic, int pin); extern void __init mp_register_ioapic(int id, u32 address, u32 gsi_base); extern void __init pre_init_apic_IRQ0(void); @@ -212,6 +213,7 @@ extern void io_apic_eoi(unsigned int apic, unsigned int vector); static inline void ioapic_insert_resources(void) { } #define gsi_top (NR_IRQS_LEGACY) static inline int mp_find_ioapic(u32 gsi) { return 0; } +static inline u32 mp_pin_to_gsi(int ioapic, int pin) { return UINT_MAX; } struct io_apic_irq_attr; static inline int io_apic_set_pci_routing(struct device *dev, int irq, diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 09e5c7b4df5a..424f795a1c78 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -117,6 +117,24 @@ struct mp_ioapic_gsi *mp_ioapic_gsi_routing(int ioapic_idx) return &ioapics[ioapic_idx].gsi_config; } +static inline int mp_ioapic_pin_count(int ioapic) +{ + struct mp_ioapic_gsi *gsi_cfg = mp_ioapic_gsi_routing(ioapic); + + return gsi_cfg->gsi_end - gsi_cfg->gsi_base + 1; +} + +u32 mp_pin_to_gsi(int ioapic, int pin) +{ + return mp_ioapic_gsi_routing(ioapic)->gsi_base + pin; +} + +/* Initialize all legacy IRQs and all pins on the first IOAPIC at boot */ +static inline int mp_init_irq_at_boot(int ioapic, int irq) +{ + return ioapic == 0 || (irq >= 0 && irq < NR_IRQS_LEGACY); +} + int nr_ioapics; /* The one past the highest gsi number used */ @@ -1367,8 +1385,7 @@ static void __init __io_apic_setup_irqs(unsigned int ioapic_idx) continue; irq = pin_2_irq(idx, ioapic_idx, pin); - - if ((ioapic_idx > 0) && (irq > NR_IRQS_LEGACY)) + if (!mp_init_irq_at_boot(ioapic_idx, irq)) continue; /* @@ -1419,9 +1436,7 @@ void setup_IO_APIC_irq_extra(u32 gsi) return; irq = pin_2_irq(idx, ioapic_idx, pin); - - /* Only handle the non legacy irqs on secondary ioapics */ - if (ioapic_idx == 0 || irq < NR_IRQS_LEGACY) + if (mp_init_irq_at_boot(ioapic_idx, irq)) return; set_io_apic_irq_attr(&attr, ioapic_idx, pin, irq_trigger(idx), @@ -3528,9 +3543,9 @@ void __init setup_ioapic_dest(void) irq_entry = find_irq_entry(ioapic, pin, mp_INT); if (irq_entry == -1) continue; - irq = pin_2_irq(irq_entry, ioapic, pin); - if ((ioapic > 0) && (irq > NR_IRQS_LEGACY)) + irq = pin_2_irq(irq_entry, ioapic, pin); + if (!mp_init_irq_at_boot(ioapic, irq)) continue; idata = irq_get_irq_data(irq); -- cgit v1.2.3-58-ga151 From 6084a6e23c971ef703229ee1aec68d01688578d6 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:46 +0800 Subject: x86: ce4100, irq: Make CE4100 depend on CONFIG_X86_IO_APIC Intel CE4100 platforms need IOAPIC support becasue some devices are always connected to the second IOAPIC, so make CONFIG_CE depends on CONFIG_X86_IO_APIC. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-18-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/Kconfig | 1 + arch/x86/platform/ce4100/ce4100.c | 9 ++------- 2 files changed, 3 insertions(+), 7 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index a8f749ef0fdc..9df5c453171e 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -429,6 +429,7 @@ config X86_INTEL_CE bool "CE4100 TV platform" depends on PCI depends on PCI_GODIRECT + depends on X86_IO_APIC depends on X86_32 depends on X86_EXTENDED_PLATFORM select X86_REBOOTFIXUPS diff --git a/arch/x86/platform/ce4100/ce4100.c b/arch/x86/platform/ce4100/ce4100.c index 8244f5ec2f4c..0a54a586559b 100644 --- a/arch/x86/platform/ce4100/ce4100.c +++ b/arch/x86/platform/ce4100/ce4100.c @@ -135,14 +135,12 @@ static void __init sdv_arch_setup(void) sdv_serial_fixup(); } -#ifdef CONFIG_X86_IO_APIC static void sdv_pci_init(void) { x86_of_pci_init(); /* We can't set this earlier, because we need to calibrate the timer */ legacy_pic = &null_legacy_pic; } -#endif /* * CE4100 specific x86_init function overrides and early setup @@ -155,7 +153,9 @@ void __init x86_ce4100_early_setup(void) x86_init.resources.probe_roms = x86_init_noop; x86_init.mpparse.get_smp_config = x86_init_uint_noop; x86_init.mpparse.find_smp_config = x86_init_noop; + x86_init.mpparse.setup_ioapic_ids = setup_ioapic_ids_from_mpc_nocheck; x86_init.pci.init = ce4100_pci_init; + x86_init.pci.init_irq = sdv_pci_init; /* * By default, the reboot method is ACPI which is supported by the @@ -166,10 +166,5 @@ void __init x86_ce4100_early_setup(void) */ reboot_type = BOOT_KBD; -#ifdef CONFIG_X86_IO_APIC - x86_init.pci.init_irq = sdv_pci_init; - x86_init.mpparse.setup_ioapic_ids = setup_ioapic_ids_from_mpc_nocheck; -#endif - pm_power_off = ce4100_power_off; } -- cgit v1.2.3-58-ga151 From 6532ce994c304835f3bfc8479acce9d102cd8b5b Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:47 +0800 Subject: x86: ce4100, irq: Do not set legacy_pic to null_legacy_pic Intel CE4100 platforms has i8259 legacy interrupt controllers, so don't set legacy_pic to null_legacy_pic in late booting stage because we need legacy_pic to mask i8259 pins when enabling IOAPIC pins for safety. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-19-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/platform/ce4100/ce4100.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/platform/ce4100/ce4100.c b/arch/x86/platform/ce4100/ce4100.c index 0a54a586559b..701fd5843c87 100644 --- a/arch/x86/platform/ce4100/ce4100.c +++ b/arch/x86/platform/ce4100/ce4100.c @@ -138,8 +138,6 @@ static void __init sdv_arch_setup(void) static void sdv_pci_init(void) { x86_of_pci_init(); - /* We can't set this earlier, because we need to calibrate the timer */ - legacy_pic = &null_legacy_pic; } /* -- cgit v1.2.3-58-ga151 From 95d76acc7518d566df18d67c1343bb375b78d1f3 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:48 +0800 Subject: x86, irq: Count legacy IRQs by legacy_pic->nr_legacy_irqs instead of NR_IRQS_LEGACY Some platforms, such as Intel MID and mshypv, do not support legacy interrupt controllers. So count legacy IRQs by legacy_pic->nr_legacy_irqs instead of hard-coded NR_IRQS_LEGACY. Signed-off-by: Jiang Liu Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: xen-devel@lists.xenproject.org Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Len Brown Cc: Pavel Machek Cc: Konrad Rzeszutek Wilk Cc: Rob Herring Cc: Michal Simek Cc: Tony Lindgren Acked-by: David Vrabel Link: http://lkml.kernel.org/r/1402302011-23642-20-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/i8259.h | 5 +++++ arch/x86/kernel/acpi/boot.c | 13 +++++++------ arch/x86/kernel/apic/io_apic.c | 43 ++++++++++++++++++++++++------------------ arch/x86/kernel/devicetree.c | 13 +++++++------ arch/x86/kernel/irqinit.c | 6 +++--- arch/x86/pci/xen.c | 7 ++++--- 6 files changed, 51 insertions(+), 36 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/i8259.h b/arch/x86/include/asm/i8259.h index a20365953bf8..ccffa53750a8 100644 --- a/arch/x86/include/asm/i8259.h +++ b/arch/x86/include/asm/i8259.h @@ -67,4 +67,9 @@ struct legacy_pic { extern struct legacy_pic *legacy_pic; extern struct legacy_pic null_legacy_pic; +static inline int nr_legacy_irqs(void) +{ + return legacy_pic->nr_legacy_irqs; +} + #endif /* _ASM_X86_I8259_H */ diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index f3bafcd32b98..b12976590a72 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -43,6 +43,7 @@ #include #include #include +#include #include "sleep.h" /* To include x86_acpi_suspend_lowlevel */ static int __initdata acpi_force = 0; @@ -101,10 +102,10 @@ static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = { static unsigned int gsi_to_irq(unsigned int gsi) { - unsigned int irq = gsi + NR_IRQS_LEGACY; + unsigned int irq = gsi + nr_legacy_irqs(); unsigned int i; - for (i = 0; i < NR_IRQS_LEGACY; i++) { + for (i = 0; i < nr_legacy_irqs(); i++) { if (isa_irq_to_gsi[i] == gsi) { return i; } @@ -114,7 +115,7 @@ static unsigned int gsi_to_irq(unsigned int gsi) * except on truly weird platforms that have * non isa irqs in the first 16 gsis. */ - if (gsi >= NR_IRQS_LEGACY) + if (gsi >= nr_legacy_irqs()) irq = gsi; else irq = gsi_top + gsi; @@ -371,7 +372,7 @@ static void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, * otherwise there will be more than one entry with the same GSI * and acpi_isa_irq_to_gsi() may give wrong result. */ - if (gsi < NR_IRQS_LEGACY && isa_irq_to_gsi[gsi] == gsi) + if (gsi < nr_legacy_irqs() && isa_irq_to_gsi[gsi] == gsi) isa_irq_to_gsi[gsi] = ACPI_INVALID_GSI; isa_irq_to_gsi[bus_irq] = gsi; } @@ -628,7 +629,7 @@ EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi) { - if (isa_irq < NR_IRQS_LEGACY && + if (isa_irq < nr_legacy_irqs() && isa_irq_to_gsi[isa_irq] != ACPI_INVALID_GSI) { *gsi = isa_irq_to_gsi[isa_irq]; return 0; @@ -1017,7 +1018,7 @@ static void __init mp_config_acpi_legacy_irqs(void) * Use the default configuration for the IRQs 0-15. Unless * overridden by (MADT) interrupt source override entries. */ - for (i = 0; i < NR_IRQS_LEGACY; i++) { + for (i = 0; i < nr_legacy_irqs(); i++) { int ioapic, pin; unsigned int dstapic; int idx; diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 424f795a1c78..4208ea9edc10 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -129,10 +129,17 @@ u32 mp_pin_to_gsi(int ioapic, int pin) return mp_ioapic_gsi_routing(ioapic)->gsi_base + pin; } -/* Initialize all legacy IRQs and all pins on the first IOAPIC at boot */ +/* + * Initialize all legacy IRQs and all pins on the first IOAPIC + * if we have legacy interrupt controller. Kernel boot option "pirq=" + * may rely on non-legacy pins on the first IOAPIC. + */ static inline int mp_init_irq_at_boot(int ioapic, int irq) { - return ioapic == 0 || (irq >= 0 && irq < NR_IRQS_LEGACY); + if (!nr_legacy_irqs()) + return 0; + + return ioapic == 0 || (irq >= 0 && irq < nr_legacy_irqs()); } int nr_ioapics; @@ -216,7 +223,7 @@ int __init arch_early_irq_init(void) struct irq_cfg *cfg; int count, node, i; - if (!legacy_pic->nr_legacy_irqs) + if (!nr_legacy_irqs()) io_apic_irqs = ~0UL; for_each_ioapic(i) { @@ -239,7 +246,7 @@ int __init arch_early_irq_init(void) * For legacy IRQ's, start with assigning irq0 to irq15 to * IRQ0_VECTOR to IRQ15_VECTOR for all cpu's. */ - if (i < legacy_pic->nr_legacy_irqs) { + if (i < nr_legacy_irqs()) { cfg[i].vector = IRQ0_VECTOR + i; cpumask_setall(cfg[i].domain); } @@ -823,7 +830,7 @@ static int __init find_isa_irq_apic(int irq, int type) */ static int EISA_ELCR(unsigned int irq) { - if (irq < legacy_pic->nr_legacy_irqs) { + if (irq < nr_legacy_irqs()) { unsigned int port = 0x4d0 + (irq >> 3); return (inb(port) >> (irq & 7)) & 1; } @@ -980,7 +987,7 @@ static int pin_2_irq(int idx, int apic, int pin) } else { u32 gsi = gsi_cfg->gsi_base + pin; - if (gsi >= NR_IRQS_LEGACY) + if (gsi >= nr_legacy_irqs()) irq = gsi; else irq = gsi_top + gsi; @@ -1357,7 +1364,7 @@ static void setup_ioapic_irq(unsigned int irq, struct irq_cfg *cfg, } ioapic_register_intr(irq, cfg, attr->trigger); - if (irq < legacy_pic->nr_legacy_irqs) + if (irq < nr_legacy_irqs()) legacy_pic->mask(irq); ioapic_write_entry(attr->ioapic, attr->ioapic_pin, entry); @@ -1782,7 +1789,7 @@ __apicdebuginit(void) print_PIC(void) unsigned int v; unsigned long flags; - if (!legacy_pic->nr_legacy_irqs) + if (!nr_legacy_irqs()) return; printk(KERN_DEBUG "\nprinting PIC contents\n"); @@ -1854,7 +1861,7 @@ void __init enable_IO_APIC(void) int i8259_apic, i8259_pin; int apic, pin; - if (!legacy_pic->nr_legacy_irqs) + if (!nr_legacy_irqs()) return; for_each_ioapic_pin(apic, pin) { @@ -1939,7 +1946,7 @@ void disable_IO_APIC(void) */ clear_IO_APIC(); - if (!legacy_pic->nr_legacy_irqs) + if (!nr_legacy_irqs()) return; x86_io_apic_ops.disable(); @@ -2143,7 +2150,7 @@ static unsigned int startup_ioapic_irq(struct irq_data *data) unsigned long flags; raw_spin_lock_irqsave(&ioapic_lock, flags); - if (irq < legacy_pic->nr_legacy_irqs) { + if (irq < nr_legacy_irqs()) { legacy_pic->mask(irq); if (legacy_pic->irq_pending(irq)) was_pending = 1; @@ -2542,7 +2549,7 @@ static inline void init_IO_APIC_traps(void) * so default to an old-fashioned 8259 * interrupt if we can.. */ - if (irq < legacy_pic->nr_legacy_irqs) + if (irq < nr_legacy_irqs()) legacy_pic->make_irq(irq); else /* Strange. Oh, well.. */ @@ -2839,7 +2846,7 @@ void __init setup_IO_APIC(void) /* * calling enable_IO_APIC() is moved to setup_local_APIC for BP */ - io_apic_irqs = legacy_pic->nr_legacy_irqs ? ~PIC_IRQS : ~0UL; + io_apic_irqs = nr_legacy_irqs() ? ~PIC_IRQS : ~0UL; apic_printk(APIC_VERBOSE, "ENABLING IO-APIC IRQs\n"); /* @@ -2850,7 +2857,7 @@ void __init setup_IO_APIC(void) sync_Arb_IDs(); setup_IO_APIC_irqs(); init_IO_APIC_traps(); - if (legacy_pic->nr_legacy_irqs) + if (nr_legacy_irqs()) check_timer(); } @@ -3348,7 +3355,7 @@ static int __init io_apic_get_redir_entries(int ioapic) unsigned int arch_dynirq_lower_bound(unsigned int from) { - unsigned int min = gsi_top + NR_IRQS_LEGACY; + unsigned int min = gsi_top + nr_legacy_irqs(); return from < min ? min : from; } @@ -3360,17 +3367,17 @@ int __init arch_probe_nr_irqs(void) if (nr_irqs > (NR_VECTORS * nr_cpu_ids)) nr_irqs = NR_VECTORS * nr_cpu_ids; - nr = (gsi_top + NR_IRQS_LEGACY) + 8 * nr_cpu_ids; + nr = (gsi_top + nr_legacy_irqs()) + 8 * nr_cpu_ids; #if defined(CONFIG_PCI_MSI) || defined(CONFIG_HT_IRQ) /* * for MSI and HT dyn irq */ - nr += (gsi_top + NR_IRQS_LEGACY) * 16; + nr += gsi_top * 16; #endif if (nr < nr_irqs) nr_irqs = nr; - return NR_IRQS_LEGACY; + return nr_legacy_irqs(); } int io_apic_set_pci_routing(struct device *dev, int irq, diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c index 7db54b5d5f86..b4680058db8b 100644 --- a/arch/x86/kernel/devicetree.c +++ b/arch/x86/kernel/devicetree.c @@ -21,6 +21,7 @@ #include #include #include +#include __initdata u64 initial_dtb; char __initdata cmd_line[COMMAND_LINE_SIZE]; @@ -314,7 +315,7 @@ static void dt_add_ioapic_domain(unsigned int ioapic_num, struct irq_domain *id; struct mp_ioapic_gsi *gsi_cfg; int ret; - int num; + int num, legacy_irqs = nr_legacy_irqs(); gsi_cfg = mp_ioapic_gsi_routing(ioapic_num); num = gsi_cfg->gsi_end - gsi_cfg->gsi_base + 1; @@ -324,17 +325,17 @@ static void dt_add_ioapic_domain(unsigned int ioapic_num, BUG_ON(!id); if (gsi_cfg->gsi_base == 0) { /* - * The first NR_IRQS_LEGACY irq descs are allocated in + * The first nr_legacy_irqs() irq descs are allocated in * early_irq_init() and need just a mapping. The * remaining irqs need both. All of them are preallocated * and assigned so we can keep the 1:1 mapping which the ioapic * is having. */ - irq_domain_associate_many(id, 0, 0, NR_IRQS_LEGACY); + irq_domain_associate_many(id, 0, 0, legacy_irqs); - if (num > NR_IRQS_LEGACY) { - ret = irq_create_strict_mappings(id, NR_IRQS_LEGACY, - NR_IRQS_LEGACY, num - NR_IRQS_LEGACY); + if (num > legacy_irqs) { + ret = irq_create_strict_mappings(id, legacy_irqs, + legacy_irqs, num - legacy_irqs); if (ret) pr_err("Error creating mapping for the " "remaining IRQs: %d\n", ret); diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c index 7f50156542fb..a0111e91eb4b 100644 --- a/arch/x86/kernel/irqinit.c +++ b/arch/x86/kernel/irqinit.c @@ -78,7 +78,7 @@ void __init init_ISA_irqs(void) #endif legacy_pic->init(0); - for (i = 0; i < legacy_pic->nr_legacy_irqs; i++) + for (i = 0; i < nr_legacy_irqs(); i++) irq_set_chip_and_handler_name(i, chip, handle_level_irq, name); } @@ -100,7 +100,7 @@ void __init init_IRQ(void) * then this vector space can be freed and re-used dynamically as the * irq's migrate etc. */ - for (i = 0; i < legacy_pic->nr_legacy_irqs; i++) + for (i = 0; i < nr_legacy_irqs(); i++) per_cpu(vector_irq, 0)[IRQ0_VECTOR + i] = i; x86_init.irqs.intr_init(); @@ -121,7 +121,7 @@ void setup_vector_irq(int cpu) * legacy PIC, for the new cpu that is coming online, setup the static * legacy vector to irq mapping: */ - for (irq = 0; irq < legacy_pic->nr_legacy_irqs; irq++) + for (irq = 0; irq < nr_legacy_irqs(); irq++) per_cpu(vector_irq, cpu)[IRQ0_VECTOR + irq] = irq; #endif diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c index 905956f16465..093f5f4272d3 100644 --- a/arch/x86/pci/xen.c +++ b/arch/x86/pci/xen.c @@ -23,6 +23,7 @@ #include #include #include +#include static int xen_pcifront_enable_irq(struct pci_dev *dev) { @@ -40,7 +41,7 @@ static int xen_pcifront_enable_irq(struct pci_dev *dev) /* In PV DomU the Xen PCI backend puts the PIRQ in the interrupt line.*/ pirq = gsi; - if (gsi < NR_IRQS_LEGACY) + if (gsi < nr_legacy_irqs()) share = 0; rc = xen_bind_pirq_gsi_to_irq(gsi, pirq, share, "pcifront"); @@ -511,7 +512,7 @@ int __init pci_xen_initial_domain(void) xen_setup_acpi_sci(); __acpi_register_gsi = acpi_register_gsi_xen; /* Pre-allocate legacy irqs */ - for (irq = 0; irq < NR_IRQS_LEGACY; irq++) { + for (irq = 0; irq < nr_legacy_irqs(); irq++) { int trigger, polarity; if (acpi_get_override_irq(irq, &trigger, &polarity) == -1) @@ -522,7 +523,7 @@ int __init pci_xen_initial_domain(void) true /* Map GSI to PIRQ */); } if (0 == nr_ioapics) { - for (irq = 0; irq < NR_IRQS_LEGACY; irq++) + for (irq = 0; irq < nr_legacy_irqs(); irq++) xen_bind_pirq_gsi_to_irq(irq, irq, 0, "xt-pic"); } return 0; -- cgit v1.2.3-58-ga151 From 4b92b4f754939e4ac6bb53355abbe48a5054b573 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:49 +0800 Subject: x86, irq: Simplify arch_early_irq_init() Simplify function arch_early_irq_init() and kill static array irq_cfgx[]. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-21-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/apic/io_apic.c | 33 +++++++++++---------------------- 1 file changed, 11 insertions(+), 22 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 4208ea9edc10..e25e7e315d4f 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -183,6 +183,7 @@ early_param("noapic", parse_noapic); static int io_apic_setup_irq_pin(unsigned int irq, int node, struct io_apic_irq_attr *attr); +static struct irq_cfg *alloc_irq_and_cfg_at(unsigned int at, int node); /* Will be called in mpparse/acpi/sfi codes for saving IRQ info */ void mp_save_irq(struct mpc_intsrc *m) @@ -214,14 +215,10 @@ static struct irq_pin_list *alloc_irq_pin_list(int node) return kzalloc_node(sizeof(struct irq_pin_list), GFP_KERNEL, node); } - -/* irq_cfg is indexed by the sum of all RTEs in all I/O APICs. */ -static struct irq_cfg irq_cfgx[NR_IRQS_LEGACY]; - int __init arch_early_irq_init(void) { struct irq_cfg *cfg; - int count, node, i; + int i, node = cpu_to_node(0); if (!nr_legacy_irqs()) io_apic_irqs = ~0UL; @@ -234,22 +231,14 @@ int __init arch_early_irq_init(void) pr_err("IOAPIC %d: suspend/resume impossible!\n", i); } - cfg = irq_cfgx; - count = ARRAY_SIZE(irq_cfgx); - node = cpu_to_node(0); - - for (i = 0; i < count; i++) { - irq_set_chip_data(i, &cfg[i]); - zalloc_cpumask_var_node(&cfg[i].domain, GFP_KERNEL, node); - zalloc_cpumask_var_node(&cfg[i].old_domain, GFP_KERNEL, node); - /* - * For legacy IRQ's, start with assigning irq0 to irq15 to - * IRQ0_VECTOR to IRQ15_VECTOR for all cpu's. - */ - if (i < nr_legacy_irqs()) { - cfg[i].vector = IRQ0_VECTOR + i; - cpumask_setall(cfg[i].domain); - } + /* + * For legacy IRQ's, start with assigning irq0 to irq15 to + * IRQ0_VECTOR to IRQ15_VECTOR for all cpu's. + */ + for (i = 0; i < nr_legacy_irqs(); i++) { + cfg = alloc_irq_and_cfg_at(i, node); + cfg->vector = IRQ0_VECTOR + i; + cpumask_setall(cfg->domain); } return 0; @@ -3377,7 +3366,7 @@ int __init arch_probe_nr_irqs(void) if (nr < nr_irqs) nr_irqs = nr; - return nr_legacy_irqs(); + return 0; } int io_apic_set_pci_routing(struct device *dev, int irq, -- cgit v1.2.3-58-ga151 From 6b9fb7082409cd4a2c7caf43e3c023ad82dad0d4 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Tue, 10 Jun 2014 14:13:25 +0800 Subject: x86, ACPI, irq: Consolidate algorithm of mapping (ioapic, pin) to IRQ number Currently ACPI and ioapic both implement algorithms to map (ioapic, pin) to IRQ number. So consolidate the common part into one place, which is also preparing for irqdomain support. It introduces mp_map_gsi_to_irq(), which will be used to allocate IRQ number IOAPIC pins when irqdomain is enabled. Also rename gsi_to_irq() to map_gsi_to_irq(), later we will introduce unmap_gsi_to_irq() when enabling IOAPIC hotplug. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Len Brown Cc: Pavel Machek Link: http://lkml.kernel.org/r/1402380812-32446-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/io_apic.h | 2 ++ arch/x86/kernel/acpi/boot.c | 45 ++++++++++++++++++++---------------------- arch/x86/kernel/apic/io_apic.c | 27 ++++++++++++++----------- 3 files changed, 38 insertions(+), 36 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index b775cf3622c3..978e51fdcb59 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -172,6 +172,7 @@ extern u32 gsi_top; extern int mp_find_ioapic(u32 gsi); extern int mp_find_ioapic_pin(int ioapic, u32 gsi); extern u32 mp_pin_to_gsi(int ioapic, int pin); +extern int mp_map_gsi_to_irq(u32 gsi); extern void __init mp_register_ioapic(int id, u32 address, u32 gsi_base); extern void __init pre_init_apic_IRQ0(void); @@ -214,6 +215,7 @@ static inline void ioapic_insert_resources(void) { } #define gsi_top (NR_IRQS_LEGACY) static inline int mp_find_ioapic(u32 gsi) { return 0; } static inline u32 mp_pin_to_gsi(int ioapic, int pin) { return UINT_MAX; } +static inline int mp_map_gsi_to_irq(u32 gsi) { return gsi; } struct io_apic_irq_attr; static inline int io_apic_set_pci_routing(struct device *dev, int irq, diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index b12976590a72..9965afbd71ca 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -100,27 +100,15 @@ static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = { #define ACPI_INVALID_GSI INT_MIN -static unsigned int gsi_to_irq(unsigned int gsi) +static int map_gsi_to_irq(unsigned int gsi) { - unsigned int irq = gsi + nr_legacy_irqs(); - unsigned int i; + int i; - for (i = 0; i < nr_legacy_irqs(); i++) { - if (isa_irq_to_gsi[i] == gsi) { + for (i = 0; i < nr_legacy_irqs(); i++) + if (isa_irq_to_gsi[i] == gsi) return i; - } - } - - /* Provide an identity mapping of gsi == irq - * except on truly weird platforms that have - * non isa irqs in the first 16 gsis. - */ - if (gsi >= nr_legacy_irqs()) - irq = gsi; - else - irq = gsi_top + gsi; - return irq; + return mp_map_gsi_to_irq(gsi); } /* @@ -416,6 +404,7 @@ static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) { + int irq; int ioapic; int ioapic_pin; struct io_apic_irq_attr irq_attr; @@ -428,6 +417,10 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, if (acpi_gbl_FADT.sci_interrupt == gsi) return gsi; + irq = map_gsi_to_irq(gsi); + if (irq < 0) + return ACPI_INVALID_GSI; + ioapic = mp_find_ioapic(gsi); if (ioapic < 0) { printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi); @@ -449,7 +442,7 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin, trigger == ACPI_EDGE_SENSITIVE ? 0 : 1, polarity == ACPI_ACTIVE_HIGH ? 0 : 1); - ret = io_apic_set_pci_routing(dev, gsi_to_irq(gsi), &irq_attr); + ret = io_apic_set_pci_routing(dev, irq, &irq_attr); if (ret < 0) gsi = ACPI_INVALID_GSI; @@ -614,16 +607,20 @@ void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) outb(new >> 8, 0x4d1); } -int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) +int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp) { - *irq = gsi_to_irq(gsi); + int irq = map_gsi_to_irq(gsi); + if (irq >= 0) { #ifdef CONFIG_X86_IO_APIC - if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) - setup_IO_APIC_irq_extra(gsi); + if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) + setup_IO_APIC_irq_extra(gsi); #endif + *irqp = irq; + return 0; + } - return 0; + return -1; } EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); @@ -681,7 +678,7 @@ int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) plat_gsi = __acpi_register_gsi(dev, gsi, trigger, polarity); if (plat_gsi != ACPI_INVALID_GSI) - return gsi_to_irq(plat_gsi); + return map_gsi_to_irq(plat_gsi); return -1; } diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index e25e7e315d4f..7fd9f1befe0b 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -959,11 +959,19 @@ static int irq_trigger(int idx) return trigger; } +int mp_map_gsi_to_irq(u32 gsi) +{ + /* + * Provide an identity mapping of gsi == irq except on truly weird + * platforms that have non isa irqs in the first 16 gsis. + */ + return gsi >= nr_legacy_irqs() ? gsi : gsi_top + gsi; +} + static int pin_2_irq(int idx, int apic, int pin) { int irq; int bus = mp_irqs[idx].srcbus; - struct mp_ioapic_gsi *gsi_cfg = mp_ioapic_gsi_routing(apic); /* * Debugging check, we are in big trouble if this message pops up! @@ -971,17 +979,6 @@ static int pin_2_irq(int idx, int apic, int pin) if (mp_irqs[idx].dstirq != pin) pr_err("broken BIOS or MPTABLE parser, ayiee!!\n"); - if (test_bit(bus, mp_bus_not_pci)) { - irq = mp_irqs[idx].srcbusirq; - } else { - u32 gsi = gsi_cfg->gsi_base + pin; - - if (gsi >= nr_legacy_irqs()) - irq = gsi; - else - irq = gsi_top + gsi; - } - #ifdef CONFIG_X86_32 /* * PCI IRQ command line redirection. Yes, limits are hardcoded. @@ -996,11 +993,17 @@ static int pin_2_irq(int idx, int apic, int pin) apic_printk(APIC_VERBOSE, KERN_DEBUG "using PIRQ%d -> IRQ %d\n", pin-16, irq); + return irq; } } } #endif + if (test_bit(bus, mp_bus_not_pci)) + irq = mp_irqs[idx].srcbusirq; + else + irq = mp_map_gsi_to_irq(mp_pin_to_gsi(apic, pin)); + return irq; } -- cgit v1.2.3-58-ga151 From 84245af7297ced9e8fe837dc0fc4782438771bd2 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Tue, 10 Jun 2014 14:14:47 +0800 Subject: x86, irq, ACPI: Change __acpi_register_gsi to return IRQ number instead of GSI Currently __acpi_register_gsi is defined to return GSI number and may be set to acpi_register_gsi_pic(), acpi_register_gsi_ioapic(), acpi_register_gsi_xen_hvm() and acpi_register_gsi_xen(). Among which, acpi_register_gsi_ioapic() returns GSI number, but acpi_register_gsi_xen_hvm() and acpi_register_gsi_xen() actually returns IRQ number instead of GSI. And for acpi_register_gsi_pic(), GSI number equals to IRQ number. So change acpi_register_gsi_ioapic() to return IRQ number, it also simplifies the code. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Len Brown Cc: Pavel Machek Link: http://lkml.kernel.org/r/1402380887-32512-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/acpi/boot.c | 21 ++++++++------------- 1 file changed, 8 insertions(+), 13 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 9965afbd71ca..0cf311c72bce 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -419,7 +419,7 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, irq = map_gsi_to_irq(gsi); if (irq < 0) - return ACPI_INVALID_GSI; + return irq; ioapic = mp_find_ioapic(gsi); if (ioapic < 0) { @@ -444,12 +444,11 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, polarity == ACPI_ACTIVE_HIGH ? 0 : 1); ret = io_apic_set_pci_routing(dev, irq, &irq_attr); if (ret < 0) - gsi = ACPI_INVALID_GSI; + irq = -1; - return gsi; + return irq; } - static int __init acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) { @@ -652,11 +651,13 @@ static int acpi_register_gsi_pic(struct device *dev, u32 gsi, static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi, int trigger, int polarity) { + int irq = gsi; + #ifdef CONFIG_X86_IO_APIC - gsi = mp_register_gsi(dev, gsi, trigger, polarity); + irq = mp_register_gsi(dev, gsi, trigger, polarity); #endif - return gsi; + return irq; } int (*__acpi_register_gsi)(struct device *dev, u32 gsi, @@ -674,13 +675,7 @@ int (*acpi_suspend_lowlevel)(void); */ int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) { - unsigned int plat_gsi; - - plat_gsi = __acpi_register_gsi(dev, gsi, trigger, polarity); - if (plat_gsi != ACPI_INVALID_GSI) - return map_gsi_to_irq(plat_gsi); - - return -1; + return __acpi_register_gsi(dev, gsi, trigger, polarity); } EXPORT_SYMBOL_GPL(acpi_register_gsi); -- cgit v1.2.3-58-ga151 From d7f3d4781852f5160b939f526afbc21a813a0206 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:52 +0800 Subject: x86, irq: Introduce mechanisms to support dynamically allocate IRQ for IOAPIC Currently x86 support identity mapping between GSI(IOAPIC pin) and IRQ number, so continous IRQs at low end are statically allocated to IOAPICs at boot time. This design causes trouble to support IOAPIC hotplug. This patch implements basic mechanism to dynamically allocate IRQ on demand for IOAPIC pins by using irqdomain framework. It first adds several fields into struct ioapic to support irqdomain. Then it implements an algorithm to dynamically allocate IRQ number for IOAPIC pins on demand. Currently it supports three types of irqdomain: 1) LEGACY: used to support IOAPIC hosting legacy IRQs and building identity mapping for legacy IRQs. A speical case, we dynamically allocate IRQ number for IOAPIC pin which has GSI number below nr_legacy_irqs() but isn't legacy IRQ. This is for backward compatibility and avoid regression. 2) STRICT: build identity mapping between GSI and IRQ nubmer. 3) DYNAMIC: dynamically allocate IRQ number for IOAPIC pin on demand. Legacy(ISA) IRQs is not managed by irqdomain because there may be multiple pins sharing the same IRQ number and current irqdomain only supports 1:1 mapping between pins and IRQ. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Len Brown Cc: Pavel Machek Link: http://lkml.kernel.org/r/1402302011-23642-24-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/Kconfig | 1 + arch/x86/include/asm/io_apic.h | 21 +++++- arch/x86/kernel/acpi/boot.c | 8 +-- arch/x86/kernel/apic/io_apic.c | 158 ++++++++++++++++++++++++++++++++--------- 4 files changed, 147 insertions(+), 41 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 9df5c453171e..147a7b788100 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -836,6 +836,7 @@ config X86_IO_APIC def_bool y depends on X86_64 || SMP || X86_32_NON_STANDARD || X86_UP_IOAPIC || PCI_MSI select GENERIC_IRQ_LEGACY_ALLOC_HWIRQ + select IRQ_DOMAIN config X86_REROUTE_FOR_BROKEN_BOOT_IRQS bool "Reroute for broken boot IRQs" diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index 978e51fdcb59..64c6e344399b 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -98,6 +98,8 @@ struct IR_IO_APIC_route_entry { #define IOAPIC_AUTO -1 #define IOAPIC_EDGE 0 #define IOAPIC_LEVEL 1 +#define IOAPIC_MAP_ALLOC 0x1 +#define IOAPIC_MAP_CHECK 0x2 #ifdef CONFIG_X86_IO_APIC @@ -163,6 +165,21 @@ extern int restore_ioapic_entries(void); extern void setup_ioapic_ids_from_mpc(void); extern void setup_ioapic_ids_from_mpc_nocheck(void); +enum ioapic_domain_type { + IOAPIC_DOMAIN_INVALID, + IOAPIC_DOMAIN_LEGACY, + IOAPIC_DOMAIN_STRICT, + IOAPIC_DOMAIN_DYNAMIC, +}; + +struct device_node; +struct irq_domain_ops; +struct ioapic_domain_cfg { + enum ioapic_domain_type type; + const struct irq_domain_ops *ops; + struct device_node *dev; +}; + struct mp_ioapic_gsi{ u32 gsi_base; u32 gsi_end; @@ -172,7 +189,7 @@ extern u32 gsi_top; extern int mp_find_ioapic(u32 gsi); extern int mp_find_ioapic_pin(int ioapic, u32 gsi); extern u32 mp_pin_to_gsi(int ioapic, int pin); -extern int mp_map_gsi_to_irq(u32 gsi); +extern int mp_map_gsi_to_irq(u32 gsi, unsigned int flags); extern void __init mp_register_ioapic(int id, u32 address, u32 gsi_base); extern void __init pre_init_apic_IRQ0(void); @@ -215,7 +232,7 @@ static inline void ioapic_insert_resources(void) { } #define gsi_top (NR_IRQS_LEGACY) static inline int mp_find_ioapic(u32 gsi) { return 0; } static inline u32 mp_pin_to_gsi(int ioapic, int pin) { return UINT_MAX; } -static inline int mp_map_gsi_to_irq(u32 gsi) { return gsi; } +static inline int mp_map_gsi_to_irq(u32 gsi, unsigned int flags) { return gsi; } struct io_apic_irq_attr; static inline int io_apic_set_pci_routing(struct device *dev, int irq, diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 0cf311c72bce..d6635baf9e3d 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -100,7 +100,7 @@ static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = { #define ACPI_INVALID_GSI INT_MIN -static int map_gsi_to_irq(unsigned int gsi) +static int map_gsi_to_irq(unsigned int gsi, unsigned int flags) { int i; @@ -108,7 +108,7 @@ static int map_gsi_to_irq(unsigned int gsi) if (isa_irq_to_gsi[i] == gsi) return i; - return mp_map_gsi_to_irq(gsi); + return mp_map_gsi_to_irq(gsi, flags); } /* @@ -417,7 +417,7 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, if (acpi_gbl_FADT.sci_interrupt == gsi) return gsi; - irq = map_gsi_to_irq(gsi); + irq = map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC); if (irq < 0) return irq; @@ -608,7 +608,7 @@ void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp) { - int irq = map_gsi_to_irq(gsi); + int irq = map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC | IOAPIC_MAP_CHECK); if (irq >= 0) { #ifdef CONFIG_X86_IO_APIC diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 7fd9f1befe0b..51ce80004a78 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include #include @@ -83,6 +84,7 @@ int sis_apic_bug = -1; static DEFINE_RAW_SPINLOCK(ioapic_lock); static DEFINE_RAW_SPINLOCK(vector_lock); +static DEFINE_MUTEX(ioapic_mutex); static struct ioapic { /* @@ -97,6 +99,8 @@ static struct ioapic { struct mpc_ioapic mp_config; /* IO APIC gsi routing info */ struct mp_ioapic_gsi gsi_config; + struct ioapic_domain_cfg irqdomain_cfg; + struct irq_domain *irqdomain; DECLARE_BITMAP(pin_programmed, MP_MAX_IOAPIC_PIN + 1); } ioapics[MAX_IO_APICS]; @@ -142,6 +146,11 @@ static inline int mp_init_irq_at_boot(int ioapic, int irq) return ioapic == 0 || (irq >= 0 && irq < nr_legacy_irqs()); } +static inline struct irq_domain *mp_ioapic_irqdomain(int ioapic) +{ + return ioapics[ioapic].irqdomain; +} + int nr_ioapics; /* The one past the highest gsi number used */ @@ -959,19 +968,79 @@ static int irq_trigger(int idx) return trigger; } -int mp_map_gsi_to_irq(u32 gsi) +static int alloc_irq_from_domain(struct irq_domain *domain, u32 gsi, int pin) { + int irq = -1; + int ioapic = (int)(long)domain->host_data; + int type = ioapics[ioapic].irqdomain_cfg.type; + + switch (type) { + case IOAPIC_DOMAIN_LEGACY: + /* + * Dynamically allocate IRQ number for non-ISA IRQs in the first 16 + * GSIs on some weird platforms. + */ + if (gsi < nr_legacy_irqs()) + irq = irq_create_mapping(domain, pin); + else if (irq_create_strict_mappings(domain, gsi, pin, 1) == 0) + irq = gsi; + break; + case IOAPIC_DOMAIN_STRICT: + if (irq_create_strict_mappings(domain, gsi, pin, 1) == 0) + irq = gsi; + break; + case IOAPIC_DOMAIN_DYNAMIC: + irq = irq_create_mapping(domain, pin); + break; + default: + WARN(1, "ioapic: unknown irqdomain type %d\n", type); + break; + } + + return irq > 0 ? irq : -1; +} + +static int mp_map_pin_to_irq(u32 gsi, int idx, int ioapic, int pin, + unsigned int flags) +{ + int irq; + struct irq_domain *domain = mp_ioapic_irqdomain(ioapic); + /* - * Provide an identity mapping of gsi == irq except on truly weird - * platforms that have non isa irqs in the first 16 gsis. + * Don't use irqdomain to manage ISA IRQs because there may be + * multiple IOAPIC pins sharing the same ISA IRQ number and + * irqdomain only supports 1:1 mapping between IOAPIC pin and + * IRQ number. A typical IOAPIC has 24 pins, pin 0-15 are used + * for legacy IRQs and pin 16-23 are used for PCI IRQs (PIRQ A-H). + * When ACPI is disabled, only legacy IRQ numbers (IRQ0-15) are + * available, and some BIOSes may use MP Interrupt Source records + * to override IRQ numbers for PIRQs instead of reprogramming + * the interrupt routing logic. Thus there may be multiple pins + * sharing the same legacy IRQ number when ACPI is disabled. */ - return gsi >= nr_legacy_irqs() ? gsi : gsi_top + gsi; + if (idx >= 0 && test_bit(mp_irqs[idx].srcbus, mp_bus_not_pci)) + return mp_irqs[idx].srcbusirq; + + if (!domain) { + /* + * Provide an identity mapping of gsi == irq except on truly + * weird platforms that have non isa irqs in the first 16 gsis. + */ + return gsi >= nr_legacy_irqs() ? gsi : gsi_top + gsi; + } + + mutex_lock(&ioapic_mutex); + irq = irq_find_mapping(domain, pin); + if (irq <= 0 && (flags & IOAPIC_MAP_ALLOC)) + irq = alloc_irq_from_domain(domain, gsi, pin); + mutex_unlock(&ioapic_mutex); + + return irq > 0 ? irq : -1; } -static int pin_2_irq(int idx, int apic, int pin) +static int pin_2_irq(int idx, int ioapic, int pin, unsigned int flags) { - int irq; - int bus = mp_irqs[idx].srcbus; + u32 gsi = mp_pin_to_gsi(ioapic, pin); /* * Debugging check, we are in big trouble if this message pops up! @@ -989,7 +1058,7 @@ static int pin_2_irq(int idx, int apic, int pin) apic_printk(APIC_VERBOSE, KERN_DEBUG "disabling PIRQ%d\n", pin-16); } else { - irq = pirq_entries[pin-16]; + int irq = pirq_entries[pin-16]; apic_printk(APIC_VERBOSE, KERN_DEBUG "using PIRQ%d -> IRQ %d\n", pin-16, irq); @@ -999,12 +1068,23 @@ static int pin_2_irq(int idx, int apic, int pin) } #endif - if (test_bit(bus, mp_bus_not_pci)) - irq = mp_irqs[idx].srcbusirq; - else - irq = mp_map_gsi_to_irq(mp_pin_to_gsi(apic, pin)); + return mp_map_pin_to_irq(gsi, idx, ioapic, pin, flags); +} - return irq; +int mp_map_gsi_to_irq(u32 gsi, unsigned int flags) +{ + int ioapic, pin, idx; + + ioapic = mp_find_ioapic(gsi); + if (ioapic < 0) + return -1; + + pin = mp_find_ioapic_pin(ioapic, gsi); + idx = find_irq_entry(ioapic, pin, mp_INT); + if ((flags & IOAPIC_MAP_CHECK) && idx < 0) + return -1; + + return mp_map_pin_to_irq(gsi, idx, ioapic, pin, flags); } /* @@ -1014,7 +1094,7 @@ static int pin_2_irq(int idx, int apic, int pin) int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin, struct io_apic_irq_attr *irq_attr) { - int irq, i, best_guess = -1; + int irq, i, best_ioapic = -1, best_idx = -1; apic_printk(APIC_DEBUG, "querying PCI -> IRQ mapping bus:%d, slot:%d, pin:%d.\n", @@ -1043,30 +1123,37 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin, continue; /* Skip ISA IRQs */ - irq = pin_2_irq(i, ioapic_idx, mp_irqs[i].dstirq); - if (ioapic_idx == 0 && !IO_APIC_IRQ(irq)) + irq = pin_2_irq(i, ioapic_idx, mp_irqs[i].dstirq, 0); + if (irq > 0 && !IO_APIC_IRQ(irq)) continue; if (pin == (mp_irqs[i].srcbusirq & 3)) { - set_io_apic_irq_attr(irq_attr, ioapic_idx, - mp_irqs[i].dstirq, - irq_trigger(i), - irq_polarity(i)); - return irq; + best_idx = i; + best_ioapic = ioapic_idx; + goto out; } + /* * Use the first all-but-pin matching entry as a * best-guess fuzzy result for broken mptables. */ - if (best_guess < 0) { - set_io_apic_irq_attr(irq_attr, ioapic_idx, - mp_irqs[i].dstirq, - irq_trigger(i), - irq_polarity(i)); - best_guess = irq; + if (best_idx < 0) { + best_idx = i; + best_ioapic = ioapic_idx; } } - return best_guess; + if (best_idx < 0) + return -1; + +out: + irq = pin_2_irq(best_idx, best_ioapic, mp_irqs[best_idx].dstirq, + IOAPIC_MAP_ALLOC); + if (irq > 0) + set_io_apic_irq_attr(irq_attr, best_ioapic, + mp_irqs[best_idx].dstirq, + irq_trigger(best_idx), + irq_polarity(best_idx)); + return irq; } EXPORT_SYMBOL(IO_APIC_get_PCI_irq_vector); @@ -1257,7 +1344,7 @@ static inline int IO_APIC_irq_trigger(int irq) for_each_ioapic_pin(apic, pin) { idx = find_irq_entry(apic, pin, mp_INT); - if ((idx != -1) && (irq == pin_2_irq(idx, apic, pin))) + if ((idx != -1) && (irq == pin_2_irq(idx, apic, pin, 0))) return irq_trigger(idx); } /* @@ -1383,8 +1470,9 @@ static void __init __io_apic_setup_irqs(unsigned int ioapic_idx) if (io_apic_pin_not_connected(idx, ioapic_idx, pin)) continue; - irq = pin_2_irq(idx, ioapic_idx, pin); - if (!mp_init_irq_at_boot(ioapic_idx, irq)) + irq = pin_2_irq(idx, ioapic_idx, pin, + ioapic_idx ? 0 : IOAPIC_MAP_ALLOC); + if (irq < 0 || !mp_init_irq_at_boot(ioapic_idx, irq)) continue; /* @@ -1434,8 +1522,8 @@ void setup_IO_APIC_irq_extra(u32 gsi) if (idx == -1) return; - irq = pin_2_irq(idx, ioapic_idx, pin); - if (mp_init_irq_at_boot(ioapic_idx, irq)) + irq = pin_2_irq(idx, ioapic_idx, pin, IOAPIC_MAP_ALLOC); + if (irq < 0 || mp_init_irq_at_boot(ioapic_idx, irq)) return; set_io_apic_irq_attr(&attr, ioapic_idx, pin, irq_trigger(idx), @@ -3543,8 +3631,8 @@ void __init setup_ioapic_dest(void) if (irq_entry == -1) continue; - irq = pin_2_irq(irq_entry, ioapic, pin); - if (!mp_init_irq_at_boot(ioapic, irq)) + irq = pin_2_irq(irq_entry, ioapic, pin, 0); + if (irq < 0 || !mp_init_irq_at_boot(ioapic, irq)) continue; idata = irq_get_irq_data(irq); -- cgit v1.2.3-58-ga151 From 44767bfaaed782d6d635ecbb13f3980041e6f33e Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:53 +0800 Subject: x86, irq: Enhance mp_register_ioapic() to support irqdomain Enhance function mp_register_ioapic() to support irqdomain. When registering IOAPIC, caller may provide callbacks and parameters for creating irqdomain. The IOAPIC core will create irqdomain later if caller has passed in corresponding parameters. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: sfi-devel@simplefirmware.org Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Len Brown Cc: Pavel Machek Cc: Rob Herring Cc: Michal Simek Cc: Tony Lindgren Link: http://lkml.kernel.org/r/1402302011-23642-25-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/io_apic.h | 3 ++- arch/x86/kernel/acpi/boot.c | 2 +- arch/x86/kernel/apic/io_apic.c | 42 +++++++++++++++++++++++++++++++++++++++++- arch/x86/kernel/devicetree.c | 2 +- arch/x86/kernel/mpparse.c | 2 +- arch/x86/platform/sfi/sfi.c | 2 +- 6 files changed, 47 insertions(+), 6 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index 64c6e344399b..3e4bea3a52b1 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -190,7 +190,8 @@ extern int mp_find_ioapic(u32 gsi); extern int mp_find_ioapic_pin(int ioapic, u32 gsi); extern u32 mp_pin_to_gsi(int ioapic, int pin); extern int mp_map_gsi_to_irq(u32 gsi, unsigned int flags); -extern void __init mp_register_ioapic(int id, u32 address, u32 gsi_base); +extern void __init mp_register_ioapic(int id, u32 address, u32 gsi_base, + struct ioapic_domain_cfg *cfg); extern void __init pre_init_apic_IRQ0(void); extern void mp_save_irq(struct mpc_intsrc *m); diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index d6635baf9e3d..f86b4bae4640 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -462,7 +462,7 @@ acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) acpi_table_print_madt_entry(header); mp_register_ioapic(ioapic->id, - ioapic->address, ioapic->global_irq_base); + ioapic->address, ioapic->global_irq_base, NULL); return 0; } diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 51ce80004a78..563f4504f54d 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -85,6 +85,7 @@ int sis_apic_bug = -1; static DEFINE_RAW_SPINLOCK(ioapic_lock); static DEFINE_RAW_SPINLOCK(vector_lock); static DEFINE_MUTEX(ioapic_mutex); +static unsigned int ioapic_dynirq_base; static struct ioapic { /* @@ -2920,8 +2921,35 @@ out: */ #define PIC_IRQS (1UL << PIC_CASCADE_IR) +static int mp_irqdomain_create(int ioapic) +{ + int hwirqs = mp_ioapic_pin_count(ioapic); + struct ioapic *ip = &ioapics[ioapic]; + struct ioapic_domain_cfg *cfg = &ip->irqdomain_cfg; + struct mp_ioapic_gsi *gsi_cfg = mp_ioapic_gsi_routing(ioapic); + + if (cfg->type == IOAPIC_DOMAIN_INVALID) + return 0; + + ip->irqdomain = irq_domain_add_linear(cfg->dev, hwirqs, cfg->ops, + (void *)(long)ioapic); + if(!ip->irqdomain) + return -ENOMEM; + + if (cfg->type == IOAPIC_DOMAIN_LEGACY || + cfg->type == IOAPIC_DOMAIN_STRICT) + ioapic_dynirq_base = max(ioapic_dynirq_base, + gsi_cfg->gsi_end + 1); + + if (gsi_cfg->gsi_base == 0) + irq_set_default_host(ip->irqdomain); + + return 0; +} + void __init setup_IO_APIC(void) { + int ioapic; /* * calling enable_IO_APIC() is moved to setup_local_APIC for BP @@ -2929,6 +2957,9 @@ void __init setup_IO_APIC(void) io_apic_irqs = nr_legacy_irqs() ? ~PIC_IRQS : ~0UL; apic_printk(APIC_VERBOSE, "ENABLING IO-APIC IRQs\n"); + for_each_ioapic(ioapic) + BUG_ON(mp_irqdomain_create(ioapic)); + /* * Set up IO-APIC IRQ routing. */ @@ -3437,6 +3468,9 @@ unsigned int arch_dynirq_lower_bound(unsigned int from) { unsigned int min = gsi_top + nr_legacy_irqs(); + if (ioapic_dynirq_base) + return ioapic_dynirq_base; + return from < min ? min : from; } @@ -3812,7 +3846,8 @@ static __init int bad_ioapic_register(int idx) return 0; } -void __init mp_register_ioapic(int id, u32 address, u32 gsi_base) +void __init mp_register_ioapic(int id, u32 address, u32 gsi_base, + struct ioapic_domain_cfg *cfg) { int idx = 0; int entries; @@ -3826,6 +3861,11 @@ void __init mp_register_ioapic(int id, u32 address, u32 gsi_base) ioapics[idx].mp_config.type = MP_IOAPIC; ioapics[idx].mp_config.flags = MPC_APIC_USABLE; ioapics[idx].mp_config.apicaddr = address; + ioapics[idx].irqdomain = NULL; + if (cfg) + ioapics[idx].irqdomain_cfg = *cfg; + else + ioapics[idx].irqdomain_cfg.type = IOAPIC_DOMAIN_INVALID; set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address); diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c index b4680058db8b..d2c53feacd77 100644 --- a/arch/x86/kernel/devicetree.c +++ b/arch/x86/kernel/devicetree.c @@ -177,7 +177,7 @@ static void __init dtb_add_ioapic(struct device_node *dn) dn->full_name); return; } - mp_register_ioapic(++ioapic_id, r.start, gsi_top); + mp_register_ioapic(++ioapic_id, r.start, gsi_top, NULL); } static void __init dtb_ioapic_setup(void) diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c index b10e1132f316..ea8595e4cbd5 100644 --- a/arch/x86/kernel/mpparse.c +++ b/arch/x86/kernel/mpparse.c @@ -115,7 +115,7 @@ static void __init MP_bus_info(struct mpc_bus *m) static void __init MP_ioapic_info(struct mpc_ioapic *m) { if (m->flags & MPC_APIC_USABLE) - mp_register_ioapic(m->apicid, m->apicaddr, gsi_top); + mp_register_ioapic(m->apicid, m->apicaddr, gsi_top, NULL); } static void __init print_mp_irq_info(struct mpc_intsrc *mp_irq) diff --git a/arch/x86/platform/sfi/sfi.c b/arch/x86/platform/sfi/sfi.c index bcd1a703e3e6..8f2f789c6f04 100644 --- a/arch/x86/platform/sfi/sfi.c +++ b/arch/x86/platform/sfi/sfi.c @@ -82,7 +82,7 @@ static int __init sfi_parse_ioapic(struct sfi_table_header *table) pentry = (struct sfi_apic_table_entry *)sb->pentry; for (i = 0; i < num; i++) { - mp_register_ioapic(i, pentry->phys_addr, gsi_top); + mp_register_ioapic(i, pentry->phys_addr, gsi_top, NULL); pentry++; } -- cgit v1.2.3-58-ga151 From ca7e28aa4ff34fdd6622d915682b2765453c5ddd Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:54 +0800 Subject: x86, ACPI, irq: Provide basic irqdomain support Enhance ACPI driver to provide basic irqdomain support for IOAPIC. We will build identity mapping for IOAPICs hosting legacy IRQs, otherwise dynamically allocate IRQ numbers for IOAPIC pins on demand. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Len Brown Cc: Pavel Machek Link: http://lkml.kernel.org/r/1402302011-23642-26-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/acpi/boot.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index f86b4bae4640..8d9aee1e67e8 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include #include @@ -449,10 +450,16 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, return irq; } +static struct irq_domain_ops acpi_irqdomain_ops; + static int __init acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) { struct acpi_madt_io_apic *ioapic = NULL; + struct ioapic_domain_cfg cfg = { + .type = IOAPIC_DOMAIN_DYNAMIC, + .ops = &acpi_irqdomain_ops, + }; ioapic = (struct acpi_madt_io_apic *)header; @@ -461,8 +468,12 @@ acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) acpi_table_print_madt_entry(header); - mp_register_ioapic(ioapic->id, - ioapic->address, ioapic->global_irq_base, NULL); + /* Statically assign IRQ numbers for IOAPICs hosting legacy IRQs */ + if (ioapic->global_irq_base < nr_legacy_irqs()) + cfg.type = IOAPIC_DOMAIN_LEGACY; + + mp_register_ioapic(ioapic->id, ioapic->address, ioapic->global_irq_base, + &cfg); return 0; } -- cgit v1.2.3-58-ga151 From 74501edcd846830bec86bfa06c47c25083e70ffc Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:55 +0800 Subject: x86, mpparse, irq: Provide basic irqdomain support Enhance mpparse to provide basic support of irqdomain. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-27-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/mpparse.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c index ea8595e4cbd5..13c8e1f864fc 100644 --- a/arch/x86/kernel/mpparse.c +++ b/arch/x86/kernel/mpparse.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include @@ -112,10 +113,17 @@ static void __init MP_bus_info(struct mpc_bus *m) pr_warn("Unknown bustype %s - ignoring\n", str); } +static struct irq_domain_ops mp_ioapic_irqdomain_ops; + static void __init MP_ioapic_info(struct mpc_ioapic *m) { + struct ioapic_domain_cfg cfg = { + .type = IOAPIC_DOMAIN_LEGACY, + .ops = &mp_ioapic_irqdomain_ops, + }; + if (m->flags & MPC_APIC_USABLE) - mp_register_ioapic(m->apicid, m->apicaddr, gsi_top, NULL); + mp_register_ioapic(m->apicid, m->apicaddr, gsi_top, &cfg); } static void __init print_mp_irq_info(struct mpc_intsrc *mp_irq) -- cgit v1.2.3-58-ga151 From 1b5d3e00d45e093fa0551c588034c3355b362f66 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:56 +0800 Subject: x86, SFI, irq: Provide basic irqdomain support Enhance SFI to provide basic support of irqdomain with identity mapping between GSIs and IRQs. Some Intel MID platforms assumes identity mapping between GSI and IRQ, so we can't dynamically allocate IRQ number on demand. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: H. Peter Anvin Cc: sfi-devel@simplefirmware.org Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Len Brown Cc: David Cohen Cc: Kuppuswamy Sathyanarayanan Link: http://lkml.kernel.org/r/1402302011-23642-28-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/pci/intel_mid_pci.c | 3 +++ arch/x86/platform/intel-mid/sfi.c | 2 ++ arch/x86/platform/sfi/sfi.c | 8 +++++++- 3 files changed, 12 insertions(+), 1 deletion(-) (limited to 'arch/x86') diff --git a/arch/x86/pci/intel_mid_pci.c b/arch/x86/pci/intel_mid_pci.c index 84b9d672843d..fcbdc5fac2c6 100644 --- a/arch/x86/pci/intel_mid_pci.c +++ b/arch/x86/pci/intel_mid_pci.c @@ -217,6 +217,9 @@ static int intel_mid_pci_irq_enable(struct pci_dev *dev) * MRST only have IOAPIC, the PCI irq lines are 1:1 mapped to * IOAPIC RTE entries, so we just enable RTE for the device. */ + if (mp_map_gsi_to_irq(dev->irq, IOAPIC_MAP_ALLOC) < 0) + return -EBUSY; + irq_attr.ioapic = mp_find_ioapic(dev->irq); irq_attr.ioapic_pin = dev->irq; irq_attr.trigger = 1; /* level */ diff --git a/arch/x86/platform/intel-mid/sfi.c b/arch/x86/platform/intel-mid/sfi.c index 994c40bd7cb7..7161395e7de7 100644 --- a/arch/x86/platform/intel-mid/sfi.c +++ b/arch/x86/platform/intel-mid/sfi.c @@ -473,6 +473,8 @@ static int __init sfi_parse_devs(struct sfi_table_header *table) /* PNW and CLV go with active low */ irq_attr.polarity = 1; } + WARN_ON(mp_map_gsi_to_irq(irq, + IOAPIC_MAP_ALLOC) < 0); io_apic_set_pci_routing(NULL, irq, &irq_attr); } } else { diff --git a/arch/x86/platform/sfi/sfi.c b/arch/x86/platform/sfi/sfi.c index 8f2f789c6f04..1fdaa57f41a5 100644 --- a/arch/x86/platform/sfi/sfi.c +++ b/arch/x86/platform/sfi/sfi.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include @@ -70,19 +71,24 @@ static int __init sfi_parse_cpus(struct sfi_table_header *table) #endif /* CONFIG_X86_LOCAL_APIC */ #ifdef CONFIG_X86_IO_APIC +static struct irq_domain_ops sfi_ioapic_irqdomain_ops; static int __init sfi_parse_ioapic(struct sfi_table_header *table) { struct sfi_table_simple *sb; struct sfi_apic_table_entry *pentry; int i, num; + struct ioapic_domain_cfg cfg = { + .type = IOAPIC_DOMAIN_STRICT, + .ops = &sfi_ioapic_irqdomain_ops, + }; sb = (struct sfi_table_simple *)table; num = SFI_GET_NUM_ENTRIES(sb, struct sfi_apic_table_entry); pentry = (struct sfi_apic_table_entry *)sb->pentry; for (i = 0; i < num; i++) { - mp_register_ioapic(i, pentry->phys_addr, gsi_top, NULL); + mp_register_ioapic(i, pentry->phys_addr, gsi_top, &cfg); pentry++; } -- cgit v1.2.3-58-ga151 From facd8fdb25fc4d041a283446cfb040cbfe2c3723 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:57 +0800 Subject: x86, devicetree, irq: Use common mechanism to support irqdomain Now the ioapic driver provides a common interface to create irqdomain, so replace the private implementation. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Rob Herring Cc: Michal Simek Cc: Tony Lindgren Link: http://lkml.kernel.org/r/1402302011-23642-29-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/prom.h | 2 - arch/x86/kernel/devicetree.c | 191 +++++++++++++------------------------------ arch/x86/kernel/irqinit.c | 6 -- 3 files changed, 59 insertions(+), 140 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/prom.h b/arch/x86/include/asm/prom.h index fbeb06ed0eaa..1d081ac1cd69 100644 --- a/arch/x86/include/asm/prom.h +++ b/arch/x86/include/asm/prom.h @@ -26,12 +26,10 @@ extern int of_ioapic; extern u64 initial_dtb; extern void add_dtb(u64 data); -extern void x86_add_irq_domains(void); void x86_of_pci_init(void); void x86_dtb_init(void); #else static inline void add_dtb(u64 data) { } -static inline void x86_add_irq_domains(void) { } static inline void x86_of_pci_init(void) { } static inline void x86_dtb_init(void) { } #define of_ioapic 0 diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c index d2c53feacd77..ee26feca93d9 100644 --- a/arch/x86/kernel/devicetree.c +++ b/arch/x86/kernel/devicetree.c @@ -166,82 +166,6 @@ static void __init dtb_lapic_setup(void) #ifdef CONFIG_X86_IO_APIC static unsigned int ioapic_id; -static void __init dtb_add_ioapic(struct device_node *dn) -{ - struct resource r; - int ret; - - ret = of_address_to_resource(dn, 0, &r); - if (ret) { - printk(KERN_ERR "Can't obtain address from node %s.\n", - dn->full_name); - return; - } - mp_register_ioapic(++ioapic_id, r.start, gsi_top, NULL); -} - -static void __init dtb_ioapic_setup(void) -{ - struct device_node *dn; - - for_each_compatible_node(dn, NULL, "intel,ce4100-ioapic") - dtb_add_ioapic(dn); - - if (nr_ioapics) { - of_ioapic = 1; - return; - } - printk(KERN_ERR "Error: No information about IO-APIC in OF.\n"); -} -#else -static void __init dtb_ioapic_setup(void) {} -#endif - -static void __init dtb_apic_setup(void) -{ - dtb_lapic_setup(); - dtb_ioapic_setup(); -} - -#ifdef CONFIG_OF_FLATTREE -static void __init x86_flattree_get_config(void) -{ - u32 size, map_len; - void *dt; - - if (!initial_dtb) - return; - - map_len = max(PAGE_SIZE - (initial_dtb & ~PAGE_MASK), (u64)128); - - initial_boot_params = dt = early_memremap(initial_dtb, map_len); - size = of_get_flat_dt_size(); - if (map_len < size) { - early_iounmap(dt, map_len); - initial_boot_params = dt = early_memremap(initial_dtb, size); - map_len = size; - } - - unflatten_and_copy_device_tree(); - early_iounmap(dt, map_len); -} -#else -static inline void x86_flattree_get_config(void) { } -#endif - -void __init x86_dtb_init(void) -{ - x86_flattree_get_config(); - - if (!of_have_populated_dt()) - return; - - dtb_setup_hpet(); - dtb_apic_setup(); -} - -#ifdef CONFIG_X86_IO_APIC - struct of_ioapic_type { u32 out_type; u32 trigger; @@ -292,7 +216,7 @@ static int ioapic_xlate(struct irq_domain *domain, it = &of_ioapic_type[intspec[1]]; - idx = (u32) domain->host_data; + idx = (u32)(long)domain->host_data; set_io_apic_irq_attr(&attr, idx, line, it->trigger, it->polarity); rc = io_apic_setup_irq_pin_once(irq_find_mapping(domain, line), @@ -309,78 +233,81 @@ const struct irq_domain_ops ioapic_irq_domain_ops = { .xlate = ioapic_xlate, }; -static void dt_add_ioapic_domain(unsigned int ioapic_num, - struct device_node *np) +static void __init dtb_add_ioapic(struct device_node *dn) { - struct irq_domain *id; - struct mp_ioapic_gsi *gsi_cfg; + struct resource r; int ret; - int num, legacy_irqs = nr_legacy_irqs(); - - gsi_cfg = mp_ioapic_gsi_routing(ioapic_num); - num = gsi_cfg->gsi_end - gsi_cfg->gsi_base + 1; - - id = irq_domain_add_linear(np, num, &ioapic_irq_domain_ops, - (void *)ioapic_num); - BUG_ON(!id); - if (gsi_cfg->gsi_base == 0) { - /* - * The first nr_legacy_irqs() irq descs are allocated in - * early_irq_init() and need just a mapping. The - * remaining irqs need both. All of them are preallocated - * and assigned so we can keep the 1:1 mapping which the ioapic - * is having. - */ - irq_domain_associate_many(id, 0, 0, legacy_irqs); - - if (num > legacy_irqs) { - ret = irq_create_strict_mappings(id, legacy_irqs, - legacy_irqs, num - legacy_irqs); - if (ret) - pr_err("Error creating mapping for the " - "remaining IRQs: %d\n", ret); - } - irq_set_default_host(id); - } else { - ret = irq_create_strict_mappings(id, gsi_cfg->gsi_base, 0, num); - if (ret) - pr_err("Error creating IRQ mapping: %d\n", ret); + struct ioapic_domain_cfg cfg = { + .type = IOAPIC_DOMAIN_DYNAMIC, + .ops = &ioapic_irq_domain_ops, + .dev = dn, + }; + + ret = of_address_to_resource(dn, 0, &r); + if (ret) { + printk(KERN_ERR "Can't obtain address from node %s.\n", + dn->full_name); + return; } + mp_register_ioapic(++ioapic_id, r.start, gsi_top, &cfg); } -static void __init ioapic_add_ofnode(struct device_node *np) +static void __init dtb_ioapic_setup(void) { - struct resource r; - int i, ret; + struct device_node *dn; - ret = of_address_to_resource(np, 0, &r); - if (ret) { - printk(KERN_ERR "Failed to obtain address for %s\n", - np->full_name); + for_each_compatible_node(dn, NULL, "intel,ce4100-ioapic") + dtb_add_ioapic(dn); + + if (nr_ioapics) { + of_ioapic = 1; return; } + printk(KERN_ERR "Error: No information about IO-APIC in OF.\n"); +} +#else +static void __init dtb_ioapic_setup(void) {} +#endif - for (i = 0; i < nr_ioapics; i++) { - if (r.start == mpc_ioapic_addr(i)) { - dt_add_ioapic_domain(i, np); - return; - } - } - printk(KERN_ERR "IOxAPIC at %s is not registered.\n", np->full_name); +static void __init dtb_apic_setup(void) +{ + dtb_lapic_setup(); + dtb_ioapic_setup(); } -void __init x86_add_irq_domains(void) +#ifdef CONFIG_OF_FLATTREE +static void __init x86_flattree_get_config(void) { - struct device_node *dp; + u32 size, map_len; + void *dt; - if (!of_have_populated_dt()) + if (!initial_dtb) return; - for_each_node_with_property(dp, "interrupt-controller") { - if (of_device_is_compatible(dp, "intel,ce4100-ioapic")) - ioapic_add_ofnode(dp); + map_len = max(PAGE_SIZE - (initial_dtb & ~PAGE_MASK), (u64)128); + + initial_boot_params = dt = early_memremap(initial_dtb, map_len); + size = of_get_flat_dt_size(); + if (map_len < size) { + early_iounmap(dt, map_len); + initial_boot_params = dt = early_memremap(initial_dtb, size); + map_len = size; } + + unflatten_and_copy_device_tree(); + early_iounmap(dt, map_len); } #else -void __init x86_add_irq_domains(void) { } +static inline void x86_flattree_get_config(void) { } #endif + +void __init x86_dtb_init(void) +{ + x86_flattree_get_config(); + + if (!of_have_populated_dt()) + return; + + dtb_setup_hpet(); + dtb_apic_setup(); +} diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c index a0111e91eb4b..1e6cff5814fa 100644 --- a/arch/x86/kernel/irqinit.c +++ b/arch/x86/kernel/irqinit.c @@ -86,12 +86,6 @@ void __init init_IRQ(void) { int i; - /* - * We probably need a better place for this, but it works for - * now ... - */ - x86_add_irq_domains(); - /* * On cpu 0, Assign IRQ0_VECTOR..IRQ15_VECTOR's to IRQ 0..15. * If these IRQ's are handled by legacy interrupt-controllers like PIC, -- cgit v1.2.3-58-ga151 From 15a3c7cc9154321fc3ed1f7738bb7bbe690af91d Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:58 +0800 Subject: x86, irq: Introduce two helper functions to support irqdomain map operation Currently there are multiple entries to program IOAPIC pins, such as io_apic_setup_irq_pin_once(), io_apic_set_pci_routing() and setup_IO_APIC_irq_extra() etc. This patch introduces two functions to help consolidate the code to program IOAPIC pins. Function mp_set_pin_attr() is used to optionally set trigger, polarity and NUMA node property for an IOAPIC pin. If mp_set_pin_attr() is not invoked for a pin, the default configuration from BIOS will be used. Function mp_irqdomain_map() is an common implementation of irqdomain map() operation. It figures out attribures for pin and then actually programs the IOAPIC pin. We hope this will be the only entrance for programming IOAPIC pin. And the flow will: 1) caller such as xxx_pci_irq_enable figures out pin attributes. 2) Invoke mp_set_pin_attr() to set attributes for a pin. If the pin has already bin programmed, mp_set_pin_attr() will aslo detects attribute confictions. 3) Invoke mp_map_pin_to_irq() 3.1) If IRQ has already been assigned, return irq_find_mapping() 3.2) Else irq_create_mapping() ->irq_domain_associate() ->mp_irqdomain_map() ->io_apic_setup_irq_pin() So every pin will only programmed once by mp_irqdomain_map(), so we could kill io_apic_setup_irq_pin_once(), io_apic_set_pci_routing() and setup_IO_APIC_irq_extra() etc. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-30-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/io_apic.h | 5 +++ arch/x86/kernel/apic/io_apic.c | 99 +++++++++++++++++++++++++++++++++++++++++- 2 files changed, 103 insertions(+), 1 deletion(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index 3e4bea3a52b1..c53587868590 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -173,7 +173,9 @@ enum ioapic_domain_type { }; struct device_node; +struct irq_domain; struct irq_domain_ops; + struct ioapic_domain_cfg { enum ioapic_domain_type type; const struct irq_domain_ops *ops; @@ -192,6 +194,9 @@ extern u32 mp_pin_to_gsi(int ioapic, int pin); extern int mp_map_gsi_to_irq(u32 gsi, unsigned int flags); extern void __init mp_register_ioapic(int id, u32 address, u32 gsi_base, struct ioapic_domain_cfg *cfg); +extern int mp_irqdomain_map(struct irq_domain *domain, unsigned int virq, + irq_hw_number_t hwirq); +extern int mp_set_gsi_attr(u32 gsi, int trigger, int polarity, int node); extern void __init pre_init_apic_IRQ0(void); extern void mp_save_irq(struct mpc_intsrc *m); diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 563f4504f54d..a602b35bcfe7 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -87,6 +87,14 @@ static DEFINE_RAW_SPINLOCK(vector_lock); static DEFINE_MUTEX(ioapic_mutex); static unsigned int ioapic_dynirq_base; +struct mp_pin_info { + int trigger; + int polarity; + int node; + int set; + u32 count; +}; + static struct ioapic { /* * # of IRQ routing registers @@ -102,6 +110,7 @@ static struct ioapic { struct mp_ioapic_gsi gsi_config; struct ioapic_domain_cfg irqdomain_cfg; struct irq_domain *irqdomain; + struct mp_pin_info *pin_info; DECLARE_BITMAP(pin_programmed, MP_MAX_IOAPIC_PIN + 1); } ioapics[MAX_IO_APICS]; @@ -147,6 +156,11 @@ static inline int mp_init_irq_at_boot(int ioapic, int irq) return ioapic == 0 || (irq >= 0 && irq < nr_legacy_irqs()); } +static inline struct mp_pin_info *mp_pin_info(int ioapic_idx, int pin) +{ + return ioapics[ioapic_idx].pin_info + pin; +} + static inline struct irq_domain *mp_ioapic_irqdomain(int ioapic) { return ioapics[ioapic].irqdomain; @@ -1006,6 +1020,7 @@ static int mp_map_pin_to_irq(u32 gsi, int idx, int ioapic, int pin, { int irq; struct irq_domain *domain = mp_ioapic_irqdomain(ioapic); + struct mp_pin_info *info = mp_pin_info(ioapic, pin); /* * Don't use irqdomain to manage ISA IRQs because there may be @@ -1034,6 +1049,13 @@ static int mp_map_pin_to_irq(u32 gsi, int idx, int ioapic, int pin, irq = irq_find_mapping(domain, pin); if (irq <= 0 && (flags & IOAPIC_MAP_ALLOC)) irq = alloc_irq_from_domain(domain, gsi, pin); + + if (flags & IOAPIC_MAP_ALLOC) { + if (irq > 0) + info->count++; + else if (info->count == 0) + info->set = 0; + } mutex_unlock(&ioapic_mutex); return irq > 0 ? irq : -1; @@ -2923,18 +2945,27 @@ out: static int mp_irqdomain_create(int ioapic) { + size_t size; int hwirqs = mp_ioapic_pin_count(ioapic); struct ioapic *ip = &ioapics[ioapic]; struct ioapic_domain_cfg *cfg = &ip->irqdomain_cfg; struct mp_ioapic_gsi *gsi_cfg = mp_ioapic_gsi_routing(ioapic); + size = sizeof(struct mp_pin_info) * mp_ioapic_pin_count(ioapic); + ip->pin_info = kzalloc(size, GFP_KERNEL); + if (!ip->pin_info) + return -ENOMEM; + if (cfg->type == IOAPIC_DOMAIN_INVALID) return 0; ip->irqdomain = irq_domain_add_linear(cfg->dev, hwirqs, cfg->ops, (void *)(long)ioapic); - if(!ip->irqdomain) + if(!ip->irqdomain) { + kfree(ip->pin_info); + ip->pin_info = NULL; return -ENOMEM; + } if (cfg->type == IOAPIC_DOMAIN_LEGACY || cfg->type == IOAPIC_DOMAIN_STRICT) @@ -3902,6 +3933,72 @@ void __init mp_register_ioapic(int id, u32 address, u32 gsi_base, nr_ioapics++; } +int mp_irqdomain_map(struct irq_domain *domain, unsigned int virq, + irq_hw_number_t hwirq) +{ + int ioapic = (int)(long)domain->host_data; + struct mp_pin_info *info = mp_pin_info(ioapic, hwirq); + struct io_apic_irq_attr attr; + + /* + * Skip the timer IRQ if there's a quirk handler installed and if it + * returns 1: + */ + if (apic->multi_timer_check && + apic->multi_timer_check(ioapic, virq)) + return 0; + + /* Get default attribute if not set by caller yet */ + if (!info->set) { + u32 gsi = mp_pin_to_gsi(ioapic, hwirq); + + if (acpi_get_override_irq(gsi, &info->trigger, + &info->polarity) < 0) { + /* + * PCI interrupts are always polarity one level + * triggered. + */ + info->trigger = 1; + info->polarity = 1; + } + info->node = NUMA_NO_NODE; + info->set = 1; + } + set_io_apic_irq_attr(&attr, ioapic, hwirq, info->trigger, + info->polarity); + + return io_apic_setup_irq_pin(virq, info->node, &attr); +} + +int mp_set_gsi_attr(u32 gsi, int trigger, int polarity, int node) +{ + int ret = 0; + int ioapic, pin; + struct mp_pin_info *info; + + ioapic = mp_find_ioapic(gsi); + if (ioapic < 0) + return -ENODEV; + + pin = mp_find_ioapic_pin(ioapic, gsi); + info = mp_pin_info(ioapic, pin); + trigger = trigger ? 1 : 0; + polarity = polarity ? 1 : 0; + + mutex_lock(&ioapic_mutex); + if (!info->set) { + info->trigger = trigger; + info->polarity = polarity; + info->node = node; + info->set = 1; + } else if (info->trigger != trigger || info->polarity != polarity) { + ret = -EBUSY; + } + mutex_unlock(&ioapic_mutex); + + return ret; +} + /* Enable IOAPIC early just for system timer */ void __init pre_init_apic_IRQ0(void) { -- cgit v1.2.3-58-ga151 From d7b830013f59cf586c1cec3caa1ce7156da59a13 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:19:59 +0800 Subject: x86, irq, ACPI: Use common irqdomain map interface to program IOAPIC pins Refine ACPI to use common irqdomain map interface to program IOAPIC pins, so we can unify the callsite to progam IOAPIC pins. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Len Brown Cc: Pavel Machek Link: http://lkml.kernel.org/r/1402302011-23642-31-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/acpi/boot.c | 44 ++++++++++++-------------------------------- 1 file changed, 12 insertions(+), 32 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 8d9aee1e67e8..9add76f15cb0 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -405,11 +405,7 @@ static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) { - int irq; - int ioapic; - int ioapic_pin; - struct io_apic_irq_attr irq_attr; - int ret; + int irq, node; if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) return gsi; @@ -418,39 +414,27 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, if (acpi_gbl_FADT.sci_interrupt == gsi) return gsi; + trigger = trigger == ACPI_EDGE_SENSITIVE ? 0 : 1; + polarity = polarity == ACPI_ACTIVE_HIGH ? 0 : 1; + node = dev ? dev_to_node(dev) : NUMA_NO_NODE; + if (mp_set_gsi_attr(gsi, trigger, polarity, node)) { + pr_warn("Failed to set pin attr for GSI%d\n", gsi); + return -1; + } + irq = map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC); if (irq < 0) return irq; - ioapic = mp_find_ioapic(gsi); - if (ioapic < 0) { - printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi); - return gsi; - } - - ioapic_pin = mp_find_ioapic_pin(ioapic, gsi); - - if (ioapic_pin > MP_MAX_IOAPIC_PIN) { - printk(KERN_ERR "Invalid reference to IOAPIC pin " - "%d-%d\n", mpc_ioapic_id(ioapic), - ioapic_pin); - return gsi; - } - if (enable_update_mptable) mp_config_acpi_gsi(dev, gsi, trigger, polarity); - set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin, - trigger == ACPI_EDGE_SENSITIVE ? 0 : 1, - polarity == ACPI_ACTIVE_HIGH ? 0 : 1); - ret = io_apic_set_pci_routing(dev, irq, &irq_attr); - if (ret < 0) - irq = -1; - return irq; } -static struct irq_domain_ops acpi_irqdomain_ops; +static struct irq_domain_ops acpi_irqdomain_ops = { + .map = mp_irqdomain_map, +}; static int __init acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) @@ -622,10 +606,6 @@ int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp) int irq = map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC | IOAPIC_MAP_CHECK); if (irq >= 0) { -#ifdef CONFIG_X86_IO_APIC - if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) - setup_IO_APIC_irq_extra(gsi); -#endif *irqp = irq; return 0; } -- cgit v1.2.3-58-ga151 From 9506063992cc0785246fd314a4a40b6314685aa8 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:20:00 +0800 Subject: x86, irq, mpparse: Use common irqdomain map interface to program IOAPIC pins Refine mpparse to use common irqdomain map interface to program IOAPIC pins, so we can unify the callsite to progam IOAPIC pins. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-32-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/mpparse.c | 4 +++- arch/x86/pci/irq.c | 2 -- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c index 13c8e1f864fc..faf503aa3b70 100644 --- a/arch/x86/kernel/mpparse.c +++ b/arch/x86/kernel/mpparse.c @@ -113,7 +113,9 @@ static void __init MP_bus_info(struct mpc_bus *m) pr_warn("Unknown bustype %s - ignoring\n", str); } -static struct irq_domain_ops mp_ioapic_irqdomain_ops; +static struct irq_domain_ops mp_ioapic_irqdomain_ops = { + .map = mp_irqdomain_map, +}; static void __init MP_ioapic_info(struct mpc_ioapic *m) { diff --git a/arch/x86/pci/irq.c b/arch/x86/pci/irq.c index 84112f55dd7a..e4200e5e775e 100644 --- a/arch/x86/pci/irq.c +++ b/arch/x86/pci/irq.c @@ -1227,8 +1227,6 @@ static int pirq_enable_irq(struct pci_dev *dev) } dev = temp_dev; if (irq >= 0) { - io_apic_set_pci_routing(&dev->dev, irq, - &irq_attr); dev->irq = irq; dev_info(&dev->dev, "PCI->APIC IRQ transform: " "INT %c -> IRQ %d\n", 'A' + pin - 1, irq); -- cgit v1.2.3-58-ga151 From ecc527d560cd87c74cc0bc7aff36eb72f7e18615 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:20:01 +0800 Subject: x86, irq, SFI: Use common irqdomain map interface to program IOAPIC pins Refine SFI to use common irqdomain map interface to program IOAPIC pins, so we can unify the callsite to progam IOAPIC pins. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: H. Peter Anvin Cc: sfi-devel@simplefirmware.org Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Len Brown Cc: David Cohen Cc: Kuppuswamy Sathyanarayanan Link: http://lkml.kernel.org/r/1402302011-23642-33-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/pci/intel_mid_pci.c | 19 +++++-------- arch/x86/platform/intel-mid/sfi.c | 58 +++++++++++++++++---------------------- arch/x86/platform/sfi/sfi.c | 4 ++- 3 files changed, 35 insertions(+), 46 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/pci/intel_mid_pci.c b/arch/x86/pci/intel_mid_pci.c index fcbdc5fac2c6..337d165c64f1 100644 --- a/arch/x86/pci/intel_mid_pci.c +++ b/arch/x86/pci/intel_mid_pci.c @@ -208,27 +208,22 @@ static int pci_write(struct pci_bus *bus, unsigned int devfn, int where, static int intel_mid_pci_irq_enable(struct pci_dev *dev) { - u8 pin; - struct io_apic_irq_attr irq_attr; + int polarity; - pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin); + if (intel_mid_identify_cpu() == INTEL_MID_CPU_CHIP_TANGIER) + polarity = 0; /* active high */ + else + polarity = 1; /* active low */ /* * MRST only have IOAPIC, the PCI irq lines are 1:1 mapped to * IOAPIC RTE entries, so we just enable RTE for the device. */ + if (mp_set_gsi_attr(dev->irq, 1, polarity, dev_to_node(&dev->dev))) + return -EBUSY; if (mp_map_gsi_to_irq(dev->irq, IOAPIC_MAP_ALLOC) < 0) return -EBUSY; - irq_attr.ioapic = mp_find_ioapic(dev->irq); - irq_attr.ioapic_pin = dev->irq; - irq_attr.trigger = 1; /* level */ - if (intel_mid_identify_cpu() == INTEL_MID_CPU_CHIP_TANGIER) - irq_attr.polarity = 0; /* active high */ - else - irq_attr.polarity = 1; /* active low */ - io_apic_set_pci_routing(&dev->dev, dev->irq, &irq_attr); - return 0; } diff --git a/arch/x86/platform/intel-mid/sfi.c b/arch/x86/platform/intel-mid/sfi.c index 7161395e7de7..3c53a90fdb18 100644 --- a/arch/x86/platform/intel-mid/sfi.c +++ b/arch/x86/platform/intel-mid/sfi.c @@ -432,9 +432,8 @@ static int __init sfi_parse_devs(struct sfi_table_header *table) struct sfi_table_simple *sb; struct sfi_device_table_entry *pentry; struct devs_id *dev = NULL; - int num, i; - int ioapic; - struct io_apic_irq_attr irq_attr; + int num, i, ret; + int polarity; sb = (struct sfi_table_simple *)table; num = SFI_GET_NUM_ENTRIES(sb, struct sfi_device_table_entry); @@ -448,37 +447,30 @@ static int __init sfi_parse_devs(struct sfi_table_header *table) * devices, but they have separate RTE entry in IOAPIC * so we have to enable them one by one here */ - ioapic = mp_find_ioapic(irq); - if (ioapic >= 0) { - irq_attr.ioapic = ioapic; - irq_attr.ioapic_pin = irq; - irq_attr.trigger = 1; - if (intel_mid_identify_cpu() == - INTEL_MID_CPU_CHIP_TANGIER) { - if (!strncmp(pentry->name, - "r69001-ts-i2c", 13)) - /* active low */ - irq_attr.polarity = 1; - else if (!strncmp(pentry->name, - "synaptics_3202", 14)) - /* active low */ - irq_attr.polarity = 1; - else if (irq == 41) - /* fast_int_1 */ - irq_attr.polarity = 1; - else - /* active high */ - irq_attr.polarity = 0; - } else { - /* PNW and CLV go with active low */ - irq_attr.polarity = 1; - } - WARN_ON(mp_map_gsi_to_irq(irq, - IOAPIC_MAP_ALLOC) < 0); - io_apic_set_pci_routing(NULL, irq, &irq_attr); + if (intel_mid_identify_cpu() == + INTEL_MID_CPU_CHIP_TANGIER) { + if (!strncmp(pentry->name, "r69001-ts-i2c", 13)) + /* active low */ + polarity = 1; + else if (!strncmp(pentry->name, + "synaptics_3202", 14)) + /* active low */ + polarity = 1; + else if (irq == 41) + /* fast_int_1 */ + polarity = 1; + else + /* active high */ + polarity = 0; + } else { + /* PNW and CLV go with active low */ + polarity = 1; } - } else { - irq = 0; /* No irq */ + + ret = mp_set_gsi_attr(irq, 1, polarity, NUMA_NO_NODE); + if (ret == 0) + ret = mp_map_gsi_to_irq(irq, IOAPIC_MAP_ALLOC); + WARN_ON(ret < 0); } dev = get_device_id(pentry->type, pentry->name); diff --git a/arch/x86/platform/sfi/sfi.c b/arch/x86/platform/sfi/sfi.c index 1fdaa57f41a5..2a8a74f3bd76 100644 --- a/arch/x86/platform/sfi/sfi.c +++ b/arch/x86/platform/sfi/sfi.c @@ -71,7 +71,9 @@ static int __init sfi_parse_cpus(struct sfi_table_header *table) #endif /* CONFIG_X86_LOCAL_APIC */ #ifdef CONFIG_X86_IO_APIC -static struct irq_domain_ops sfi_ioapic_irqdomain_ops; +static struct irq_domain_ops sfi_ioapic_irqdomain_ops = { + .map = mp_irqdomain_map, +}; static int __init sfi_parse_ioapic(struct sfi_table_header *table) { -- cgit v1.2.3-58-ga151 From 795aacf63fee1bfe8b68fd5db4882576c5c0c570 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:20:02 +0800 Subject: x86, irq, devicetree: Use common irqdomain map interface to program IOAPIC pins Refine devicetree to use common irqdomain map interface to program IOAPIC pins, so we can unify the callsite to progam IOAPIC pins. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Rob Herring Cc: Michal Simek Cc: Tony Lindgren Link: http://lkml.kernel.org/r/1402302011-23642-34-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/devicetree.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c index ee26feca93d9..f33bb436b8f4 100644 --- a/arch/x86/kernel/devicetree.c +++ b/arch/x86/kernel/devicetree.c @@ -201,10 +201,8 @@ static int ioapic_xlate(struct irq_domain *domain, const u32 *intspec, u32 intsize, irq_hw_number_t *out_hwirq, u32 *out_type) { - struct io_apic_irq_attr attr; struct of_ioapic_type *it; - u32 line, idx; - int rc; + u32 line, idx, gsi; if (WARN_ON(intsize < 2)) return -EINVAL; @@ -217,12 +215,9 @@ static int ioapic_xlate(struct irq_domain *domain, it = &of_ioapic_type[intspec[1]]; idx = (u32)(long)domain->host_data; - set_io_apic_irq_attr(&attr, idx, line, it->trigger, it->polarity); - - rc = io_apic_setup_irq_pin_once(irq_find_mapping(domain, line), - cpu_to_node(0), &attr); - if (rc) - return rc; + gsi = mp_pin_to_gsi(idx, line); + if (mp_set_gsi_attr(gsi, it->trigger, it->polarity, cpu_to_node(0))) + return -EBUSY; *out_hwirq = line; *out_type = it->out_type; @@ -230,6 +225,7 @@ static int ioapic_xlate(struct irq_domain *domain, } const struct irq_domain_ops ioapic_irq_domain_ops = { + .map = mp_irqdomain_map, .xlate = ioapic_xlate, }; -- cgit v1.2.3-58-ga151 From 9f354b0252b81c870ac7534d71906280cb573f86 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:20:03 +0800 Subject: x86, irq: Clean up unused IOAPIC interface Now we have converted all x86 platforms to use the common irqdomain map interface. There's no caller of io_apic_set_pci_routing(), setup_IO_APIC_irq_extra() and io_apic_setup_irq_pin_once() any more, so kill them. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-35-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/io_apic.h | 9 ------ arch/x86/kernel/apic/io_apic.c | 70 ------------------------------------------ 2 files changed, 79 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index c53587868590..af6f9d4309bf 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -141,9 +141,6 @@ extern int noioapicreroute; struct io_apic_irq_attr; struct irq_cfg; -extern int io_apic_set_pci_routing(struct device *dev, int irq, - struct io_apic_irq_attr *irq_attr); -extern void setup_IO_APIC_irq_extra(u32 gsi); extern void ioapic_insert_resources(void); extern int native_setup_ioapic_entry(int, struct IO_APIC_route_entry *, @@ -155,8 +152,6 @@ extern void native_compose_msi_msg(struct pci_dev *pdev, unsigned int irq, unsigned int dest, struct msi_msg *msg, u8 hpet_id); extern void native_eoi_ioapic_pin(int apic, int pin, int vector); -extern int io_apic_setup_irq_pin_once(unsigned int irq, int node, - struct io_apic_irq_attr *attr); extern int save_ioapic_entries(void); extern void mask_ioapic_entries(void); @@ -240,10 +235,6 @@ static inline int mp_find_ioapic(u32 gsi) { return 0; } static inline u32 mp_pin_to_gsi(int ioapic, int pin) { return UINT_MAX; } static inline int mp_map_gsi_to_irq(u32 gsi, unsigned int flags) { return gsi; } -struct io_apic_irq_attr; -static inline int io_apic_set_pci_routing(struct device *dev, int irq, - struct io_apic_irq_attr *irq_attr) { return 0; } - static inline int save_ioapic_entries(void) { return -ENOMEM; diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index a602b35bcfe7..6e3d4c771832 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -111,7 +111,6 @@ static struct ioapic { struct ioapic_domain_cfg irqdomain_cfg; struct irq_domain *irqdomain; struct mp_pin_info *pin_info; - DECLARE_BITMAP(pin_programmed, MP_MAX_IOAPIC_PIN + 1); } ioapics[MAX_IO_APICS]; #define mpc_ioapic_ver(ioapic_idx) ioapics[ioapic_idx].mp_config.apicver @@ -1523,38 +1522,6 @@ static void __init setup_IO_APIC_irqs(void) __io_apic_setup_irqs(ioapic_idx); } -/* - * for the gsi that is not in first ioapic - * but could not use acpi_register_gsi() - * like some special sci in IBM x3330 - */ -void setup_IO_APIC_irq_extra(u32 gsi) -{ - int ioapic_idx = 0, pin, idx, irq, node = cpu_to_node(0); - struct io_apic_irq_attr attr; - - /* - * Convert 'gsi' to 'ioapic.pin'. - */ - ioapic_idx = mp_find_ioapic(gsi); - if (ioapic_idx < 0) - return; - - pin = mp_find_ioapic_pin(ioapic_idx, gsi); - idx = find_irq_entry(ioapic_idx, pin, mp_INT); - if (idx == -1) - return; - - irq = pin_2_irq(idx, ioapic_idx, pin, IOAPIC_MAP_ALLOC); - if (irq < 0 || mp_init_irq_at_boot(ioapic_idx, irq)) - return; - - set_io_apic_irq_attr(&attr, ioapic_idx, pin, irq_trigger(idx), - irq_polarity(idx)); - - io_apic_setup_irq_pin_once(irq, node, &attr); -} - /* * Set up the timer pin, possibly with the 8259A-master behind. */ @@ -3458,27 +3425,6 @@ io_apic_setup_irq_pin(unsigned int irq, int node, struct io_apic_irq_attr *attr) return ret; } -int io_apic_setup_irq_pin_once(unsigned int irq, int node, - struct io_apic_irq_attr *attr) -{ - unsigned int ioapic_idx = attr->ioapic, pin = attr->ioapic_pin; - int ret; - struct IO_APIC_route_entry orig_entry; - - /* Avoid redundant programming */ - if (test_bit(pin, ioapics[ioapic_idx].pin_programmed)) { - pr_debug("Pin %d-%d already programmed\n", mpc_ioapic_id(ioapic_idx), pin); - orig_entry = ioapic_read_entry(attr->ioapic, pin); - if (attr->trigger == orig_entry.trigger && attr->polarity == orig_entry.polarity) - return 0; - return -EBUSY; - } - ret = io_apic_setup_irq_pin(irq, node, attr); - if (!ret) - set_bit(pin, ioapics[ioapic_idx].pin_programmed); - return ret; -} - static int __init io_apic_get_redir_entries(int ioapic) { union IO_APIC_reg_01 reg_01; @@ -3525,22 +3471,6 @@ int __init arch_probe_nr_irqs(void) return 0; } -int io_apic_set_pci_routing(struct device *dev, int irq, - struct io_apic_irq_attr *irq_attr) -{ - int node; - - if (!IO_APIC_IRQ(irq)) { - apic_printk(APIC_QUIET,KERN_ERR "IOAPIC[%d]: Invalid reference to IRQ 0\n", - irq_attr->ioapic); - return -EINVAL; - } - - node = dev ? dev_to_node(dev) : cpu_to_node(0); - - return io_apic_setup_irq_pin_once(irq, node, irq_attr); -} - #ifdef CONFIG_X86_32 static int __init io_apic_get_unique_id(int ioapic, int apic_id) { -- cgit v1.2.3-58-ga151 From 16ee7b3dcc56be14b9a813612cff2cc2339cdced Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:20:04 +0800 Subject: x86, irq: Simplify the way to handle ISA IRQ On startup, setup_IO_APIC_irqs() will program all IOAPIC pins for ISA IRQs. Later when mp_map_pin_to_irq() is called, it just returns ISA IRQ number without programming corresponding IOAPIC pin. This patch consolidates the way to program IOAPIC pins for both ISA and non-ISA IRQs into mp_map_pin_to_irq() as below: 1) For ISA IRQs, mp_irqs array is used to map IOAPIC pin to IRQ and mp_irqdomain_map() is used to actually program the pin. 2) For non-ISA IRQs, irqdomain is used to map IOAPIC pin to IRQ, and mp_irqdomain_map() is also used to actually program the pin. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Len Brown Cc: Pavel Machek Link: http://lkml.kernel.org/r/1402302011-23642-36-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/acpi/boot.c | 15 +------ arch/x86/kernel/apic/io_apic.c | 98 ++++++++++++++++-------------------------- 2 files changed, 40 insertions(+), 73 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 9add76f15cb0..fd4b6d2e436c 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -101,17 +101,6 @@ static u32 isa_irq_to_gsi[NR_IRQS_LEGACY] __read_mostly = { #define ACPI_INVALID_GSI INT_MIN -static int map_gsi_to_irq(unsigned int gsi, unsigned int flags) -{ - int i; - - for (i = 0; i < nr_legacy_irqs(); i++) - if (isa_irq_to_gsi[i] == gsi) - return i; - - return mp_map_gsi_to_irq(gsi, flags); -} - /* * This is just a simple wrapper around early_ioremap(), * with sanity checks for phys == 0 and size == 0. @@ -422,7 +411,7 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, return -1; } - irq = map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC); + irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC); if (irq < 0) return irq; @@ -603,7 +592,7 @@ void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp) { - int irq = map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC | IOAPIC_MAP_CHECK); + int irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC | IOAPIC_MAP_CHECK); if (irq >= 0) { *irqp = irq; diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 6e3d4c771832..8485d904b653 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -204,8 +204,6 @@ static int __init parse_noapic(char *str) } early_param("noapic", parse_noapic); -static int io_apic_setup_irq_pin(unsigned int irq, int node, - struct io_apic_irq_attr *attr); static struct irq_cfg *alloc_irq_and_cfg_at(unsigned int at, int node); /* Will be called in mpparse/acpi/sfi codes for saving IRQ info */ @@ -1021,6 +1019,16 @@ static int mp_map_pin_to_irq(u32 gsi, int idx, int ioapic, int pin, struct irq_domain *domain = mp_ioapic_irqdomain(ioapic); struct mp_pin_info *info = mp_pin_info(ioapic, pin); + if (!domain) { + /* + * Provide an identity mapping of gsi == irq except on truly + * weird platforms that have non isa irqs in the first 16 gsis. + */ + return gsi >= nr_legacy_irqs() ? gsi : gsi_top + gsi; + } + + mutex_lock(&ioapic_mutex); + /* * Don't use irqdomain to manage ISA IRQs because there may be * multiple IOAPIC pins sharing the same ISA IRQ number and @@ -1033,28 +1041,30 @@ static int mp_map_pin_to_irq(u32 gsi, int idx, int ioapic, int pin, * the interrupt routing logic. Thus there may be multiple pins * sharing the same legacy IRQ number when ACPI is disabled. */ - if (idx >= 0 && test_bit(mp_irqs[idx].srcbus, mp_bus_not_pci)) - return mp_irqs[idx].srcbusirq; - - if (!domain) { - /* - * Provide an identity mapping of gsi == irq except on truly - * weird platforms that have non isa irqs in the first 16 gsis. - */ - return gsi >= nr_legacy_irqs() ? gsi : gsi_top + gsi; + if (idx >= 0 && test_bit(mp_irqs[idx].srcbus, mp_bus_not_pci)) { + irq = mp_irqs[idx].srcbusirq; + if (flags & IOAPIC_MAP_ALLOC) { + if (info->count == 0 && + mp_irqdomain_map(domain, irq, pin) != 0) + irq = -1; + + /* special handling for timer IRQ0 */ + if (irq == 0) + info->count++; + } + } else { + irq = irq_find_mapping(domain, pin); + if (irq <= 0 && (flags & IOAPIC_MAP_ALLOC)) + irq = alloc_irq_from_domain(domain, gsi, pin); } - mutex_lock(&ioapic_mutex); - irq = irq_find_mapping(domain, pin); - if (irq <= 0 && (flags & IOAPIC_MAP_ALLOC)) - irq = alloc_irq_from_domain(domain, gsi, pin); - if (flags & IOAPIC_MAP_ALLOC) { if (irq > 0) info->count++; else if (info->count == 0) info->set = 0; } + mutex_unlock(&ioapic_mutex); return irq > 0 ? irq : -1; @@ -1471,55 +1481,23 @@ static void setup_ioapic_irq(unsigned int irq, struct irq_cfg *cfg, ioapic_write_entry(attr->ioapic, attr->ioapic_pin, entry); } -static bool __init io_apic_pin_not_connected(int idx, int ioapic_idx, int pin) -{ - if (idx != -1) - return false; - - apic_printk(APIC_VERBOSE, KERN_DEBUG " apic %d pin %d not connected\n", - mpc_ioapic_id(ioapic_idx), pin); - return true; -} - -static void __init __io_apic_setup_irqs(unsigned int ioapic_idx) -{ - int idx, node = cpu_to_node(0); - struct io_apic_irq_attr attr; - unsigned int pin, irq; - - for_each_pin(ioapic_idx, pin) { - idx = find_irq_entry(ioapic_idx, pin, mp_INT); - if (io_apic_pin_not_connected(idx, ioapic_idx, pin)) - continue; - - irq = pin_2_irq(idx, ioapic_idx, pin, - ioapic_idx ? 0 : IOAPIC_MAP_ALLOC); - if (irq < 0 || !mp_init_irq_at_boot(ioapic_idx, irq)) - continue; - - /* - * Skip the timer IRQ if there's a quirk handler - * installed and if it returns 1: - */ - if (apic->multi_timer_check && - apic->multi_timer_check(ioapic_idx, irq)) - continue; - - set_io_apic_irq_attr(&attr, ioapic_idx, pin, irq_trigger(idx), - irq_polarity(idx)); - - io_apic_setup_irq_pin(irq, node, &attr); - } -} - static void __init setup_IO_APIC_irqs(void) { - unsigned int ioapic_idx; + unsigned int ioapic, pin; + int idx; apic_printk(APIC_VERBOSE, KERN_DEBUG "init IO_APIC IRQs\n"); - for_each_ioapic(ioapic_idx) - __io_apic_setup_irqs(ioapic_idx); + for_each_ioapic_pin(ioapic, pin) { + idx = find_irq_entry(ioapic, pin, mp_INT); + if (idx < 0) + apic_printk(APIC_VERBOSE, + KERN_DEBUG " apic %d pin %d not connected\n", + mpc_ioapic_id(ioapic), pin); + else + pin_2_irq(idx, ioapic, pin, + ioapic ? 0 : IOAPIC_MAP_ALLOC); + } } /* -- cgit v1.2.3-58-ga151 From df334bead7e94772c41745af9f329383067d44ae Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:20:06 +0800 Subject: x86, irq: Introduce helper functions to release IOAPIC pin Introduce function mp_unmap_irq() to release IOAPIC IRQ when IRQ is not used any more, which will typically called by pcibios_disabled_irq. And function mp_irqdomain_unmap() is a common implementation of irq_domain_ops.unmap for IOAPIC. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-38-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/io_apic.h | 3 +++ arch/x86/kernel/apic/io_apic.c | 61 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 64 insertions(+) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index af6f9d4309bf..0aeed5ca356e 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -187,10 +187,12 @@ extern int mp_find_ioapic(u32 gsi); extern int mp_find_ioapic_pin(int ioapic, u32 gsi); extern u32 mp_pin_to_gsi(int ioapic, int pin); extern int mp_map_gsi_to_irq(u32 gsi, unsigned int flags); +extern void mp_unmap_irq(int irq); extern void __init mp_register_ioapic(int id, u32 address, u32 gsi_base, struct ioapic_domain_cfg *cfg); extern int mp_irqdomain_map(struct irq_domain *domain, unsigned int virq, irq_hw_number_t hwirq); +extern void mp_irqdomain_unmap(struct irq_domain *domain, unsigned int virq); extern int mp_set_gsi_attr(u32 gsi, int trigger, int polarity, int node); extern void __init pre_init_apic_IRQ0(void); @@ -234,6 +236,7 @@ static inline void ioapic_insert_resources(void) { } static inline int mp_find_ioapic(u32 gsi) { return 0; } static inline u32 mp_pin_to_gsi(int ioapic, int pin) { return UINT_MAX; } static inline int mp_map_gsi_to_irq(u32 gsi, unsigned int flags) { return gsi; } +static inline void mp_unmap_irq(int irq) { } static inline int save_ioapic_entries(void) { diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 8485d904b653..8d80a8f1d670 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -467,6 +467,21 @@ static int __add_pin_to_irq_node(struct irq_cfg *cfg, int node, int apic, int pi return 0; } +static void __remove_pin_from_irq(struct irq_cfg *cfg, int apic, int pin) +{ + struct irq_pin_list **last, *entry; + + last = &cfg->irq_2_pin; + for_each_irq_pin(entry, cfg->irq_2_pin) + if (entry->apic == apic && entry->pin == pin) { + *last = entry->next; + kfree(entry); + return; + } else { + last = &entry->next; + } +} + static void add_pin_to_irq_node(struct irq_cfg *cfg, int node, int apic, int pin) { if (__add_pin_to_irq_node(cfg, node, apic, pin)) @@ -1119,6 +1134,31 @@ int mp_map_gsi_to_irq(u32 gsi, unsigned int flags) return mp_map_pin_to_irq(gsi, idx, ioapic, pin, flags); } +void mp_unmap_irq(int irq) +{ + struct irq_data *data = irq_get_irq_data(irq); + struct mp_pin_info *info; + int ioapic, pin; + + if (!data || !data->domain) + return; + + ioapic = (int)(long)data->domain->host_data; + pin = (int)data->hwirq; + info = mp_pin_info(ioapic, pin); + + mutex_lock(&ioapic_mutex); + if (--info->count == 0) { + info->set = 0; + if (irq < nr_legacy_irqs() && + ioapics[ioapic].irqdomain_cfg.type == IOAPIC_DOMAIN_LEGACY) + mp_irqdomain_unmap(data->domain, irq); + else + irq_dispose_mapping(irq); + } + mutex_unlock(&ioapic_mutex); +} + /* * Find a specific PCI IRQ entry. * Not an __init, possibly needed by modules @@ -3878,6 +3918,27 @@ int mp_irqdomain_map(struct irq_domain *domain, unsigned int virq, return io_apic_setup_irq_pin(virq, info->node, &attr); } +void mp_irqdomain_unmap(struct irq_domain *domain, unsigned int virq) +{ + struct irq_data *data = irq_get_irq_data(virq); + struct irq_cfg *cfg = irq_cfg(virq); + int ioapic = (int)(long)domain->host_data; + int pin = (int)data->hwirq; + + /* + * Skip the timer IRQ if there's a quirk handler installed and if it + * returns 1: + */ + if (apic->multi_timer_check && + apic->multi_timer_check(ioapic, virq)) + return; + + ioapic_mask_entry(ioapic, pin); + __remove_pin_from_irq(cfg, ioapic, pin); + WARN_ON(cfg->irq_2_pin != NULL); + arch_teardown_hwirq(virq); +} + int mp_set_gsi_attr(u32 gsi, int trigger, int polarity, int node) { int ret = 0; -- cgit v1.2.3-58-ga151 From 6a38fa0e3c94dfd1394a71a2d47c9c4d47367374 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Tue, 10 Jun 2014 14:16:27 +0800 Subject: x86, irq, ACPI: Release IOAPIC pin when PCI device is disabled Release IOAPIC pin associated with PCI device when the PCI device is disabled. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Len Brown Cc: Pavel Machek Link: http://lkml.kernel.org/r/1402380987-32577-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/acpi/boot.c | 27 +++++++++++++++++++++++++++ drivers/acpi/pci_irq.c | 3 ++- 2 files changed, 29 insertions(+), 1 deletion(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index fd4b6d2e436c..8c28023924bf 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -421,8 +421,24 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, return irq; } +static void mp_unregister_gsi(u32 gsi) +{ + int irq; + + if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) + return; + + if (acpi_gbl_FADT.sci_interrupt == gsi) + return; + + irq = mp_map_gsi_to_irq(gsi, 0); + if (irq > 0) + mp_unmap_irq(irq); +} + static struct irq_domain_ops acpi_irqdomain_ops = { .map = mp_irqdomain_map, + .unmap = mp_irqdomain_unmap, }; static int __init @@ -640,8 +656,16 @@ static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi, return irq; } +static void acpi_unregister_gsi_ioapic(u32 gsi) +{ +#ifdef CONFIG_X86_IO_APIC + mp_unregister_gsi(gsi); +#endif +} + int (*__acpi_register_gsi)(struct device *dev, u32 gsi, int trigger, int polarity) = acpi_register_gsi_pic; +void (*__acpi_unregister_gsi)(u32 gsi) = NULL; #ifdef CONFIG_ACPI_SLEEP int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel; @@ -661,6 +685,8 @@ EXPORT_SYMBOL_GPL(acpi_register_gsi); void acpi_unregister_gsi(u32 gsi) { + if (__acpi_unregister_gsi) + __acpi_unregister_gsi(gsi); } EXPORT_SYMBOL_GPL(acpi_unregister_gsi); @@ -668,6 +694,7 @@ static void __init acpi_set_irq_model_ioapic(void) { acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; __acpi_register_gsi = acpi_register_gsi_ioapic; + __acpi_unregister_gsi = acpi_unregister_gsi_ioapic; acpi_ioapic = 1; } diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c index 9c62340c2360..6ba463ceccc6 100644 --- a/drivers/acpi/pci_irq.c +++ b/drivers/acpi/pci_irq.c @@ -498,5 +498,6 @@ void acpi_pci_irq_disable(struct pci_dev *dev) */ dev_dbg(&dev->dev, "PCI INT %c disabled\n", pin_name(pin)); - acpi_unregister_gsi(gsi); + if (gsi >= 0 && dev->irq > 0) + acpi_unregister_gsi(gsi); } -- cgit v1.2.3-58-ga151 From c03b3b0738a56cf283b0d05256988d5e3c8bd719 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:20:08 +0800 Subject: x86, irq, mpparse: Release IOAPIC pin when PCI device is disabled Release IOAPIC pin associated with PCI device when the PCI device is disabled. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-40-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/mpparse.c | 1 + arch/x86/pci/irq.c | 13 +++++++++++-- 2 files changed, 12 insertions(+), 2 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c index faf503aa3b70..fde86d2b79f8 100644 --- a/arch/x86/kernel/mpparse.c +++ b/arch/x86/kernel/mpparse.c @@ -115,6 +115,7 @@ static void __init MP_bus_info(struct mpc_bus *m) static struct irq_domain_ops mp_ioapic_irqdomain_ops = { .map = mp_irqdomain_map, + .unmap = mp_irqdomain_unmap, }; static void __init MP_ioapic_info(struct mpc_ioapic *m) diff --git a/arch/x86/pci/irq.c b/arch/x86/pci/irq.c index e4200e5e775e..748cfe8ab322 100644 --- a/arch/x86/pci/irq.c +++ b/arch/x86/pci/irq.c @@ -26,6 +26,7 @@ static int acer_tm360_irqrouting; static struct irq_routing_table *pirq_table; static int pirq_enable_irq(struct pci_dev *dev); +static void pirq_disable_irq(struct pci_dev *dev); /* * Never use: 0, 1, 2 (timer, keyboard, and cascade) @@ -53,7 +54,7 @@ struct irq_router_handler { }; int (*pcibios_enable_irq)(struct pci_dev *dev) = pirq_enable_irq; -void (*pcibios_disable_irq)(struct pci_dev *dev) = NULL; +void (*pcibios_disable_irq)(struct pci_dev *dev) = pirq_disable_irq; /* * Check passed address for the PCI IRQ Routing Table signature @@ -1186,7 +1187,7 @@ void pcibios_penalize_isa_irq(int irq, int active) static int pirq_enable_irq(struct pci_dev *dev) { - u8 pin; + u8 pin = 0; pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin); if (pin && !pcibios_lookup_irq(dev, 1)) { @@ -1252,3 +1253,11 @@ static int pirq_enable_irq(struct pci_dev *dev) } return 0; } + +static void pirq_disable_irq(struct pci_dev *dev) +{ + if (io_apic_assign_pci_irqs && dev->irq) { + mp_unmap_irq(dev->irq); + dev->irq = 0; + } +} -- cgit v1.2.3-58-ga151 From 8a3e533df17f821a4d25dd2969d2f90d7c168b46 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:20:09 +0800 Subject: x86, irq, SFI: Release IOAPIC pin when PCI device is disabled Release IOAPIC pin associated with PCI device when the PCI device is disabled. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-41-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/pci/intel_mid_pci.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'arch/x86') diff --git a/arch/x86/pci/intel_mid_pci.c b/arch/x86/pci/intel_mid_pci.c index 337d165c64f1..09fece368592 100644 --- a/arch/x86/pci/intel_mid_pci.c +++ b/arch/x86/pci/intel_mid_pci.c @@ -227,6 +227,12 @@ static int intel_mid_pci_irq_enable(struct pci_dev *dev) return 0; } +static void intel_mid_pci_irq_disable(struct pci_dev *dev) +{ + if (dev->irq > 0) + mp_unmap_irq(dev->irq); +} + struct pci_ops intel_mid_pci_ops = { .read = pci_read, .write = pci_write, @@ -243,6 +249,7 @@ int __init intel_mid_pci_init(void) pr_info("Intel MID platform detected, using MID PCI ops\n"); pci_mmcfg_late_init(); pcibios_enable_irq = intel_mid_pci_irq_enable; + pcibios_disable_irq = intel_mid_pci_irq_disable; pci_root_ops = intel_mid_pci_ops; pci_soc_mode = 1; /* Continue with standard init */ -- cgit v1.2.3-58-ga151 From 00f49c29b3298806c74589a4ed016a2afb359e98 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:20:10 +0800 Subject: x86, irq, devicetree: Release IOAPIC pin when PCI device is disabled Release IOAPIC pin associated with PCI device when the PCI device is disabled. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Rob Herring Cc: Michal Simek Cc: Tony Lindgren Link: http://lkml.kernel.org/r/1402302011-23642-42-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/devicetree.c | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/x86') diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c index f33bb436b8f4..3d3503351242 100644 --- a/arch/x86/kernel/devicetree.c +++ b/arch/x86/kernel/devicetree.c @@ -226,6 +226,7 @@ static int ioapic_xlate(struct irq_domain *domain, const struct irq_domain_ops ioapic_irq_domain_ops = { .map = mp_irqdomain_map, + .unmap = mp_irqdomain_unmap, .xlate = ioapic_xlate, }; -- cgit v1.2.3-58-ga151 From b81975eade8c6495f3c4d6746d22bdc95f617777 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 9 Jun 2014 16:20:11 +0800 Subject: x86, irq: Clean up irqdomain transition code Now we have completely switched to irqdomain, so clean up transition code in IOAPIC drivers. Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Paul Gortmaker Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Grant Likely Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Link: http://lkml.kernel.org/r/1402302011-23642-43-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/apic/io_apic.c | 28 +++++++++++----------------- 1 file changed, 11 insertions(+), 17 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 8d80a8f1d670..a44dce8cc559 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -86,6 +86,7 @@ static DEFINE_RAW_SPINLOCK(ioapic_lock); static DEFINE_RAW_SPINLOCK(vector_lock); static DEFINE_MUTEX(ioapic_mutex); static unsigned int ioapic_dynirq_base; +static int ioapic_initialized; struct mp_pin_info { int trigger; @@ -1034,13 +1035,8 @@ static int mp_map_pin_to_irq(u32 gsi, int idx, int ioapic, int pin, struct irq_domain *domain = mp_ioapic_irqdomain(ioapic); struct mp_pin_info *info = mp_pin_info(ioapic, pin); - if (!domain) { - /* - * Provide an identity mapping of gsi == irq except on truly - * weird platforms that have non isa irqs in the first 16 gsis. - */ - return gsi >= nr_legacy_irqs() ? gsi : gsi_top + gsi; - } + if (!domain) + return -1; mutex_lock(&ioapic_mutex); @@ -2986,6 +2982,8 @@ void __init setup_IO_APIC(void) init_IO_APIC_traps(); if (nr_legacy_irqs()) check_timer(); + + ioapic_initialized = 1; } /* @@ -3461,12 +3459,11 @@ static int __init io_apic_get_redir_entries(int ioapic) unsigned int arch_dynirq_lower_bound(unsigned int from) { - unsigned int min = gsi_top + nr_legacy_irqs(); - - if (ioapic_dynirq_base) - return ioapic_dynirq_base; - - return from < min ? min : from; + /* + * dmar_alloc_hwirq() may be called before setup_IO_APIC(), so use + * gsi_top if ioapic_dynirq_base hasn't been initialized yet. + */ + return ioapic_initialized ? ioapic_dynirq_base : gsi_top; } int __init arch_probe_nr_irqs(void) @@ -3841,10 +3838,7 @@ void __init mp_register_ioapic(int id, u32 address, u32 gsi_base, ioapics[idx].mp_config.flags = MPC_APIC_USABLE; ioapics[idx].mp_config.apicaddr = address; ioapics[idx].irqdomain = NULL; - if (cfg) - ioapics[idx].irqdomain_cfg = *cfg; - else - ioapics[idx].irqdomain_cfg.type = IOAPIC_DOMAIN_INVALID; + ioapics[idx].irqdomain_cfg = *cfg; set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address); -- cgit v1.2.3-58-ga151 From 411cf9ee2946492c0ac7eca48422fcf94a723ce5 Mon Sep 17 00:00:00 2001 From: Oren Twaig Date: Sun, 29 Jun 2014 13:01:08 +0300 Subject: x86, vsmp: Remove is_vsmp_box() from apic_is_clustered_box() When a vSMP Foundation box is detected, the function apic_cluster_num() counts the number of APIC clusters found. If more than one found, a multi board configuration is assumed, and TSC marked as unstable. This behavior is incorrect as vSMP Foundation may use processors from single node only, attached to memory of other nodes - and such node may have more than one APIC cluster (typically any recent intel box has more than single APIC_CLUSTERID(x)). To fix this, we simply remove the code which detects a vSMP Foundation box and affects apic_is_clusted_box() return value. This can be done because later the kernel checks by itself if the TSC is stable using the check_tsc_sync_[source|target]() functions and marks TSC as unstable if needed. Acked-by: Shai Fultheim Signed-off-by: Oren Twaig Link: http://lkml.kernel.org/r/1404036068-11674-1-git-send-email-oren@scalemp.com Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/apic.h | 8 ------ arch/x86/kernel/apic/apic.c | 60 +-------------------------------------------- 2 files changed, 1 insertion(+), 67 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index 69ed79aa9085..b40ea7e4bae9 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -85,14 +85,6 @@ static inline bool apic_from_smp_config(void) #include #endif -#ifdef CONFIG_X86_64 -extern int is_vsmp_box(void); -#else -static inline int is_vsmp_box(void) -{ - return 0; -} -#endif extern int setup_profiling_timer(unsigned int); static inline void native_apic_mem_write(u32 reg, u32 v) diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index ca1bd75e3de2..6b35d308688c 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -2451,51 +2451,6 @@ static void apic_pm_activate(void) { } #ifdef CONFIG_X86_64 -static int apic_cluster_num(void) -{ - int i, clusters, zeros; - unsigned id; - u16 *bios_cpu_apicid; - DECLARE_BITMAP(clustermap, NUM_APIC_CLUSTERS); - - bios_cpu_apicid = early_per_cpu_ptr(x86_bios_cpu_apicid); - bitmap_zero(clustermap, NUM_APIC_CLUSTERS); - - for (i = 0; i < nr_cpu_ids; i++) { - /* are we being called early in kernel startup? */ - if (bios_cpu_apicid) { - id = bios_cpu_apicid[i]; - } else if (i < nr_cpu_ids) { - if (cpu_present(i)) - id = per_cpu(x86_bios_cpu_apicid, i); - else - continue; - } else - break; - - if (id != BAD_APICID) - __set_bit(APIC_CLUSTERID(id), clustermap); - } - - /* Problem: Partially populated chassis may not have CPUs in some of - * the APIC clusters they have been allocated. Only present CPUs have - * x86_bios_cpu_apicid entries, thus causing zeroes in the bitmap. - * Since clusters are allocated sequentially, count zeros only if - * they are bounded by ones. - */ - clusters = 0; - zeros = 0; - for (i = 0; i < NUM_APIC_CLUSTERS; i++) { - if (test_bit(i, clustermap)) { - clusters += 1 + zeros; - zeros = 0; - } else - ++zeros; - } - - return clusters; -} - static int multi_checked; static int multi; @@ -2540,20 +2495,7 @@ static void dmi_check_multi(void) int apic_is_clustered_box(void) { dmi_check_multi(); - if (multi) - return 1; - - if (!is_vsmp_box()) - return 0; - - /* - * ScaleMP vSMPowered boxes have one cluster per board and TSCs are - * not guaranteed to be synced between boards - */ - if (apic_cluster_num() > 1) - return 1; - - return 0; + return multi; } #endif -- cgit v1.2.3-58-ga151 From a4355e6749113d424cd15852c73e22c1ef1bb004 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 23 Jun 2014 10:30:35 +0800 Subject: x86: intel-mid: Use the new io_apic interfaces Commit 9f354b0252b8 "x86, irq: Clean up unused IOAPIC interface" kills interface io_apic_set_pci_routing(), so change arch/x86/platform/ intel-mid/device_libs/platform_wdt.c to use new interfaces. Due to hardware resource restriction, this patch only passes compilation without functional tests. Signed-off-by: Jiang Liu Acked-by: David Cohen Cc: Tony Luck Cc: Tang Feng Cc: Yinghai Lu Cc: H. Peter Anvin Cc: Ingo Molnar Cc: Tony Luck Link: http://lkml.kernel.org/r/1403490643-26187-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- .../platform/intel-mid/device_libs/platform_wdt.c | 22 ++++++---------------- 1 file changed, 6 insertions(+), 16 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/platform/intel-mid/device_libs/platform_wdt.c b/arch/x86/platform/intel-mid/device_libs/platform_wdt.c index 973cf3bfa9fd..0b283d4d0ad7 100644 --- a/arch/x86/platform/intel-mid/device_libs/platform_wdt.c +++ b/arch/x86/platform/intel-mid/device_libs/platform_wdt.c @@ -26,28 +26,18 @@ static struct platform_device wdt_dev = { static int tangier_probe(struct platform_device *pdev) { - int ioapic; - int irq; + int gsi; struct intel_mid_wdt_pdata *pdata = pdev->dev.platform_data; - struct io_apic_irq_attr irq_attr = { 0 }; if (!pdata) return -EINVAL; - irq = pdata->irq; - ioapic = mp_find_ioapic(irq); - if (ioapic >= 0) { - int ret; - irq_attr.ioapic = ioapic; - irq_attr.ioapic_pin = irq; - irq_attr.trigger = 1; - /* irq_attr.polarity = 0; -> Active high */ - ret = io_apic_set_pci_routing(NULL, irq, &irq_attr); - if (ret) - return ret; - } else { + /* IOAPIC builds identity mapping between GSI and IRQ on MID */ + gsi = pdata->irq; + if (mp_set_gsi_attr(gsi, 1, 0, cpu_to_node(0)) || + mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC) <= 0) { dev_warn(&pdev->dev, "cannot find interrupt %d in ioapic\n", - irq); + gsi); return -EINVAL; } -- cgit v1.2.3-58-ga151 From 80a2670379b777ea45f2f6c73b2d2bc3f99066c8 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Wed, 30 Jul 2014 23:53:24 -0700 Subject: x86, apic: Remove x86_32_numa_cpu_node callback Since commit b5660ba76b41 ("x86, platforms: Remove NUMAQ") removed NUMAQ, the x86_32_numa_cpu_node() apic callback has been obsolete. Remove it. Signed-off-by: David Rientjes Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302348060.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/apic.h | 8 -------- arch/x86/kernel/apic/apic.c | 11 ----------- 2 files changed, 19 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index b40ea7e4bae9..067c2f83e329 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -370,14 +370,6 @@ struct apic { * won't be applied properly during early boot in this case. */ int (*x86_32_early_logical_apicid)(int cpu); - - /* - * Optional method called from setup_local_APIC() after logical - * apicid is guaranteed to be known to initialize apicid -> node - * mapping if NUMA initialization hasn't done so already. Don't - * add new users. - */ - int (*x86_32_numa_cpu_node)(int cpu); #endif }; diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 6b35d308688c..d705bb7ed91b 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -1342,17 +1342,6 @@ void setup_local_APIC(void) /* always use the value from LDR */ early_per_cpu(x86_cpu_to_logical_apicid, cpu) = logical_smp_processor_id(); - - /* - * Some NUMA implementations (NUMAQ) don't initialize apicid to - * node mapping during NUMA init. Now that logical apicid is - * guaranteed to be known, give it another chance. This is already - * a bit too late - percpu allocation has already happened without - * proper NUMA affinity. - */ - if (apic->x86_32_numa_cpu_node) - set_apicid_to_node(early_per_cpu(x86_cpu_to_apicid, cpu), - apic->x86_32_numa_cpu_node(cpu)); #endif /* -- cgit v1.2.3-58-ga151 From 6ab1b27c849106647c42b3ea0681a039552e24fa Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Wed, 30 Jul 2014 23:53:27 -0700 Subject: x86, apic: Replace trampoline physical addresses with defaults The trampoline_phys_{high,low} members of struct apic are always initialized to DEFAULT_TRAMPOLINE_PHYS_HIGH and TRAMPOLINE_PHYS_LOW, respectively. Hardwire the constants and remove the unneeded members. Signed-off-by: David Rientjes Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302348330.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/apic.h | 9 +++------ arch/x86/include/asm/smpboot_hooks.h | 10 +++++----- arch/x86/kernel/apic/apic_flat_64.c | 4 ---- arch/x86/kernel/apic/apic_noop.c | 4 ---- arch/x86/kernel/apic/apic_numachip.c | 2 -- arch/x86/kernel/apic/bigsmp_32.c | 3 --- arch/x86/kernel/apic/probe_32.c | 3 --- arch/x86/kernel/apic/x2apic_cluster.c | 2 -- arch/x86/kernel/apic/x2apic_phys.c | 2 -- arch/x86/kernel/apic/x2apic_uv_x.c | 2 -- 10 files changed, 8 insertions(+), 33 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index 067c2f83e329..2201c262b00c 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -335,9 +335,6 @@ struct apic { /* wakeup_secondary_cpu */ int (*wakeup_secondary_cpu)(int apicid, unsigned long start_eip); - int trampoline_phys_low; - int trampoline_phys_high; - bool wait_for_init_deassert; void (*smp_callin_clear_local_apic)(void); void (*inquire_remote_apic)(int apicid); @@ -480,10 +477,10 @@ static inline unsigned default_get_apic_id(unsigned long x) } /* - * Warm reset vector default position: + * Warm reset vector position: */ -#define DEFAULT_TRAMPOLINE_PHYS_LOW 0x467 -#define DEFAULT_TRAMPOLINE_PHYS_HIGH 0x469 +#define TRAMPOLINE_PHYS_LOW 0x467 +#define TRAMPOLINE_PHYS_HIGH 0x469 #ifdef CONFIG_X86_64 extern void apic_send_IPI_self(int vector); diff --git a/arch/x86/include/asm/smpboot_hooks.h b/arch/x86/include/asm/smpboot_hooks.h index 49adfd7bb4a4..0da7409f0bec 100644 --- a/arch/x86/include/asm/smpboot_hooks.h +++ b/arch/x86/include/asm/smpboot_hooks.h @@ -17,11 +17,11 @@ static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip) spin_unlock_irqrestore(&rtc_lock, flags); local_flush_tlb(); pr_debug("1.\n"); - *((volatile unsigned short *)phys_to_virt(apic->trampoline_phys_high)) = - start_eip >> 4; + *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_HIGH)) = + start_eip >> 4; pr_debug("2.\n"); - *((volatile unsigned short *)phys_to_virt(apic->trampoline_phys_low)) = - start_eip & 0xf; + *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_LOW)) = + start_eip & 0xf; pr_debug("3.\n"); } @@ -42,7 +42,7 @@ static inline void smpboot_restore_warm_reset_vector(void) CMOS_WRITE(0, 0xf); spin_unlock_irqrestore(&rtc_lock, flags); - *((volatile u32 *)phys_to_virt(apic->trampoline_phys_low)) = 0; + *((volatile u32 *)phys_to_virt(TRAMPOLINE_PHYS_LOW)) = 0; } static inline void __init smpboot_setup_io_apic(void) diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c index 7c1b29479513..7d56b65f3ddf 100644 --- a/arch/x86/kernel/apic/apic_flat_64.c +++ b/arch/x86/kernel/apic/apic_flat_64.c @@ -196,8 +196,6 @@ static struct apic apic_flat = { .send_IPI_all = flat_send_IPI_all, .send_IPI_self = apic_send_IPI_self, - .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW, - .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH, .wait_for_init_deassert = false, .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = default_inquire_remote_apic, @@ -312,8 +310,6 @@ static struct apic apic_physflat = { .send_IPI_all = physflat_send_IPI_all, .send_IPI_self = apic_send_IPI_self, - .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW, - .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH, .wait_for_init_deassert = false, .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = default_inquire_remote_apic, diff --git a/arch/x86/kernel/apic/apic_noop.c b/arch/x86/kernel/apic/apic_noop.c index 8c7c98249c20..c638efa6ad67 100644 --- a/arch/x86/kernel/apic/apic_noop.c +++ b/arch/x86/kernel/apic/apic_noop.c @@ -168,10 +168,6 @@ struct apic apic_noop = { .wakeup_secondary_cpu = noop_wakeup_secondary_cpu, - /* should be safe */ - .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW, - .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH, - .wait_for_init_deassert = false, .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = NULL, diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c index a5b45df8bc88..c32f8827e3a4 100644 --- a/arch/x86/kernel/apic/apic_numachip.c +++ b/arch/x86/kernel/apic/apic_numachip.c @@ -246,8 +246,6 @@ static const struct apic apic_numachip __refconst = { .send_IPI_self = numachip_send_IPI_self, .wakeup_secondary_cpu = numachip_wakeup_secondary, - .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW, - .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH, .wait_for_init_deassert = false, .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = NULL, /* REMRD not supported */ diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c index e4840aa7a255..74ffd3eb681e 100644 --- a/arch/x86/kernel/apic/bigsmp_32.c +++ b/arch/x86/kernel/apic/bigsmp_32.c @@ -196,9 +196,6 @@ static struct apic apic_bigsmp = { .send_IPI_all = bigsmp_send_IPI_all, .send_IPI_self = default_send_IPI_self, - .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW, - .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH, - .wait_for_init_deassert = true, .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = default_inquire_remote_apic, diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c index cceb352c968c..64248c7149e3 100644 --- a/arch/x86/kernel/apic/probe_32.c +++ b/arch/x86/kernel/apic/probe_32.c @@ -116,9 +116,6 @@ static struct apic apic_default = { .send_IPI_all = default_send_IPI_all, .send_IPI_self = default_send_IPI_self, - .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW, - .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH, - .wait_for_init_deassert = true, .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = default_inquire_remote_apic, diff --git a/arch/x86/kernel/apic/x2apic_cluster.c b/arch/x86/kernel/apic/x2apic_cluster.c index e66766bf1641..8b3200cc57e3 100644 --- a/arch/x86/kernel/apic/x2apic_cluster.c +++ b/arch/x86/kernel/apic/x2apic_cluster.c @@ -277,8 +277,6 @@ static struct apic apic_x2apic_cluster = { .send_IPI_all = x2apic_send_IPI_all, .send_IPI_self = x2apic_send_IPI_self, - .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW, - .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH, .wait_for_init_deassert = false, .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = NULL, diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c index 6d600ebf6c12..14c189151910 100644 --- a/arch/x86/kernel/apic/x2apic_phys.c +++ b/arch/x86/kernel/apic/x2apic_phys.c @@ -131,8 +131,6 @@ static struct apic apic_x2apic_phys = { .send_IPI_all = x2apic_send_IPI_all, .send_IPI_self = x2apic_send_IPI_self, - .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW, - .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH, .wait_for_init_deassert = false, .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = NULL, diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index 293b41df54ef..58f098880058 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -394,8 +394,6 @@ static struct apic __refdata apic_x2apic_uv_x = { .send_IPI_self = uv_send_IPI_self, .wakeup_secondary_cpu = uv_wakeup_secondary, - .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW, - .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH, .wait_for_init_deassert = false, .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = NULL, -- cgit v1.2.3-58-ga151 From 300eddf967920d35affa75db77c50c0fa493446a Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Wed, 30 Jul 2014 23:53:30 -0700 Subject: x86, apic: Remove smp_callin_clear_local_apic callback Since commit b5660ba76b41 ("x86, platforms: Remove NUMAQ") removed NUMAQ, the smp_callin_clear_local_apic() apic callback has been obsolete. Remove it. Signed-off-by: David Rientjes Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302349040.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/apic.h | 1 - arch/x86/kernel/apic/apic_flat_64.c | 2 -- arch/x86/kernel/apic/apic_noop.c | 1 - arch/x86/kernel/apic/apic_numachip.c | 1 - arch/x86/kernel/apic/bigsmp_32.c | 1 - arch/x86/kernel/apic/probe_32.c | 1 - arch/x86/kernel/apic/x2apic_cluster.c | 1 - arch/x86/kernel/apic/x2apic_phys.c | 1 - arch/x86/kernel/apic/x2apic_uv_x.c | 1 - arch/x86/kernel/smpboot.c | 4 ---- 10 files changed, 14 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index 2201c262b00c..b8c1380690e7 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -336,7 +336,6 @@ struct apic { int (*wakeup_secondary_cpu)(int apicid, unsigned long start_eip); bool wait_for_init_deassert; - void (*smp_callin_clear_local_apic)(void); void (*inquire_remote_apic)(int apicid); /* apic ops */ diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c index 7d56b65f3ddf..a790497902e4 100644 --- a/arch/x86/kernel/apic/apic_flat_64.c +++ b/arch/x86/kernel/apic/apic_flat_64.c @@ -197,7 +197,6 @@ static struct apic apic_flat = { .send_IPI_self = apic_send_IPI_self, .wait_for_init_deassert = false, - .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = default_inquire_remote_apic, .read = native_apic_mem_read, @@ -311,7 +310,6 @@ static struct apic apic_physflat = { .send_IPI_self = apic_send_IPI_self, .wait_for_init_deassert = false, - .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = default_inquire_remote_apic, .read = native_apic_mem_read, diff --git a/arch/x86/kernel/apic/apic_noop.c b/arch/x86/kernel/apic/apic_noop.c index c638efa6ad67..f05b4f090214 100644 --- a/arch/x86/kernel/apic/apic_noop.c +++ b/arch/x86/kernel/apic/apic_noop.c @@ -169,7 +169,6 @@ struct apic apic_noop = { .wakeup_secondary_cpu = noop_wakeup_secondary_cpu, .wait_for_init_deassert = false, - .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = NULL, .read = noop_apic_read, diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c index c32f8827e3a4..c0d9165be0d7 100644 --- a/arch/x86/kernel/apic/apic_numachip.c +++ b/arch/x86/kernel/apic/apic_numachip.c @@ -247,7 +247,6 @@ static const struct apic apic_numachip __refconst = { .wakeup_secondary_cpu = numachip_wakeup_secondary, .wait_for_init_deassert = false, - .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = NULL, /* REMRD not supported */ .read = native_apic_mem_read, diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c index 74ffd3eb681e..eb159163064c 100644 --- a/arch/x86/kernel/apic/bigsmp_32.c +++ b/arch/x86/kernel/apic/bigsmp_32.c @@ -197,7 +197,6 @@ static struct apic apic_bigsmp = { .send_IPI_self = default_send_IPI_self, .wait_for_init_deassert = true, - .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = default_inquire_remote_apic, .read = native_apic_mem_read, diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c index 64248c7149e3..5b617a92af0e 100644 --- a/arch/x86/kernel/apic/probe_32.c +++ b/arch/x86/kernel/apic/probe_32.c @@ -117,7 +117,6 @@ static struct apic apic_default = { .send_IPI_self = default_send_IPI_self, .wait_for_init_deassert = true, - .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = default_inquire_remote_apic, .read = native_apic_mem_read, diff --git a/arch/x86/kernel/apic/x2apic_cluster.c b/arch/x86/kernel/apic/x2apic_cluster.c index 8b3200cc57e3..d96cab15f6f4 100644 --- a/arch/x86/kernel/apic/x2apic_cluster.c +++ b/arch/x86/kernel/apic/x2apic_cluster.c @@ -278,7 +278,6 @@ static struct apic apic_x2apic_cluster = { .send_IPI_self = x2apic_send_IPI_self, .wait_for_init_deassert = false, - .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = NULL, .read = native_apic_msr_read, diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c index 14c189151910..73d0fee6d0cd 100644 --- a/arch/x86/kernel/apic/x2apic_phys.c +++ b/arch/x86/kernel/apic/x2apic_phys.c @@ -132,7 +132,6 @@ static struct apic apic_x2apic_phys = { .send_IPI_self = x2apic_send_IPI_self, .wait_for_init_deassert = false, - .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = NULL, .read = native_apic_msr_read, diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index 58f098880058..cc5d40e6c85d 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -395,7 +395,6 @@ static struct apic __refdata apic_x2apic_uv_x = { .wakeup_secondary_cpu = uv_wakeup_secondary, .wait_for_init_deassert = false, - .smp_callin_clear_local_apic = NULL, .inquire_remote_apic = NULL, .read = native_apic_msr_read, diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 5492798930ef..f0f3b194e9f9 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -168,10 +168,6 @@ static void smp_callin(void) * CPU, first the APIC. (this is probably redundant on most * boards) */ - - pr_debug("CALLIN, before setup_local_APIC()\n"); - if (apic->smp_callin_clear_local_apic) - apic->smp_callin_clear_local_apic(); setup_local_APIC(); end_local_APIC_setup(); -- cgit v1.2.3-58-ga151 From c460b5d34018d71fdeb8540620690883db3f959b Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Wed, 30 Jul 2014 23:53:34 -0700 Subject: x86, apic: Remove mps_oem_check callback Since commit b5660ba76b41 ("x86, platforms: Remove NUMAQ") removed NUMAQ, the mps_oem_check() apic callback has been obsolete. Remove it. This allows generic_mps_oem_check() to be removed as well. Signed-off-by: David Rientjes Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302349390.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/apic.h | 7 ------- arch/x86/include/asm/mpspec.h | 2 -- arch/x86/kernel/apic/apic_flat_64.c | 2 -- arch/x86/kernel/apic/apic_noop.c | 2 -- arch/x86/kernel/apic/apic_numachip.c | 1 - arch/x86/kernel/apic/bigsmp_32.c | 1 - arch/x86/kernel/apic/probe_32.c | 25 +------------------------ arch/x86/kernel/apic/x2apic_cluster.c | 1 - arch/x86/kernel/apic/x2apic_phys.c | 1 - arch/x86/kernel/apic/x2apic_uv_x.c | 1 - arch/x86/kernel/mpparse.c | 3 --- 11 files changed, 1 insertion(+), 45 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index b8c1380690e7..86d155026c3e 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -309,13 +309,6 @@ struct apic { void (*enable_apic_mode)(void); int (*phys_pkg_id)(int cpuid_apic, int index_msb); - /* - * When one of the next two hooks returns 1 the apic - * is switched to this. Essentially they are additional - * probe functions: - */ - int (*mps_oem_check)(struct mpc_table *mpc, char *oem, char *productid); - unsigned int (*get_apic_id)(unsigned long x); unsigned long (*set_apic_id)(unsigned int id); unsigned long apic_id_mask; diff --git a/arch/x86/include/asm/mpspec.h b/arch/x86/include/asm/mpspec.h index 7bef40a01a1d..b07233b64578 100644 --- a/arch/x86/include/asm/mpspec.h +++ b/arch/x86/include/asm/mpspec.h @@ -150,6 +150,4 @@ static inline void physid_set_mask_of_physid(int physid, physid_mask_t *map) extern physid_mask_t phys_cpu_present_map; -extern int generic_mps_oem_check(struct mpc_table *, char *, char *); - #endif /* _ASM_X86_MPSPEC_H */ diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c index a790497902e4..86c4203af12e 100644 --- a/arch/x86/kernel/apic/apic_flat_64.c +++ b/arch/x86/kernel/apic/apic_flat_64.c @@ -182,7 +182,6 @@ static struct apic apic_flat = { .check_phys_apicid_present = default_check_phys_apicid_present, .enable_apic_mode = NULL, .phys_pkg_id = flat_phys_pkg_id, - .mps_oem_check = NULL, .get_apic_id = flat_get_apic_id, .set_apic_id = set_apic_id, @@ -295,7 +294,6 @@ static struct apic apic_physflat = { .check_phys_apicid_present = default_check_phys_apicid_present, .enable_apic_mode = NULL, .phys_pkg_id = flat_phys_pkg_id, - .mps_oem_check = NULL, .get_apic_id = flat_get_apic_id, .set_apic_id = set_apic_id, diff --git a/arch/x86/kernel/apic/apic_noop.c b/arch/x86/kernel/apic/apic_noop.c index f05b4f090214..6b25735cc1cd 100644 --- a/arch/x86/kernel/apic/apic_noop.c +++ b/arch/x86/kernel/apic/apic_noop.c @@ -152,8 +152,6 @@ struct apic apic_noop = { .phys_pkg_id = noop_phys_pkg_id, - .mps_oem_check = NULL, - .get_apic_id = noop_get_apic_id, .set_apic_id = NULL, .apic_id_mask = 0x0F << 24, diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c index c0d9165be0d7..5f835003634a 100644 --- a/arch/x86/kernel/apic/apic_numachip.c +++ b/arch/x86/kernel/apic/apic_numachip.c @@ -231,7 +231,6 @@ static const struct apic apic_numachip __refconst = { .check_phys_apicid_present = default_check_phys_apicid_present, .enable_apic_mode = NULL, .phys_pkg_id = numachip_phys_pkg_id, - .mps_oem_check = NULL, .get_apic_id = get_apic_id, .set_apic_id = set_apic_id, diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c index eb159163064c..90f6427687ea 100644 --- a/arch/x86/kernel/apic/bigsmp_32.c +++ b/arch/x86/kernel/apic/bigsmp_32.c @@ -182,7 +182,6 @@ static struct apic apic_bigsmp = { .check_phys_apicid_present = bigsmp_check_phys_apicid_present, .enable_apic_mode = NULL, .phys_pkg_id = bigsmp_phys_pkg_id, - .mps_oem_check = NULL, .get_apic_id = bigsmp_get_apic_id, .set_apic_id = NULL, diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c index 5b617a92af0e..b4211f69e6a2 100644 --- a/arch/x86/kernel/apic/probe_32.c +++ b/arch/x86/kernel/apic/probe_32.c @@ -102,7 +102,6 @@ static struct apic apic_default = { .check_phys_apicid_present = default_check_phys_apicid_present, .enable_apic_mode = NULL, .phys_pkg_id = default_phys_pkg_id, - .mps_oem_check = NULL, .get_apic_id = default_get_apic_id, .set_apic_id = NULL, @@ -210,29 +209,7 @@ void __init generic_apic_probe(void) printk(KERN_INFO "Using APIC driver %s\n", apic->name); } -/* These functions can switch the APIC even after the initial ->probe() */ - -int __init -generic_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid) -{ - struct apic **drv; - - for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) { - if (!((*drv)->mps_oem_check)) - continue; - if (!(*drv)->mps_oem_check(mpc, oem, productid)) - continue; - - if (!cmdline_apic) { - apic = *drv; - printk(KERN_INFO "Switched to APIC driver `%s'.\n", - apic->name); - } - return 1; - } - return 0; -} - +/* This function can switch the APIC even after the initial ->probe() */ int __init default_acpi_madt_oem_check(char *oem_id, char *oem_table_id) { struct apic **drv; diff --git a/arch/x86/kernel/apic/x2apic_cluster.c b/arch/x86/kernel/apic/x2apic_cluster.c index d96cab15f6f4..7e4ac5587af0 100644 --- a/arch/x86/kernel/apic/x2apic_cluster.c +++ b/arch/x86/kernel/apic/x2apic_cluster.c @@ -263,7 +263,6 @@ static struct apic apic_x2apic_cluster = { .check_phys_apicid_present = default_check_phys_apicid_present, .enable_apic_mode = NULL, .phys_pkg_id = x2apic_phys_pkg_id, - .mps_oem_check = NULL, .get_apic_id = x2apic_get_apic_id, .set_apic_id = x2apic_set_apic_id, diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c index 73d0fee6d0cd..01136e64c380 100644 --- a/arch/x86/kernel/apic/x2apic_phys.c +++ b/arch/x86/kernel/apic/x2apic_phys.c @@ -117,7 +117,6 @@ static struct apic apic_x2apic_phys = { .check_phys_apicid_present = default_check_phys_apicid_present, .enable_apic_mode = NULL, .phys_pkg_id = x2apic_phys_pkg_id, - .mps_oem_check = NULL, .get_apic_id = x2apic_get_apic_id, .set_apic_id = x2apic_set_apic_id, diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index cc5d40e6c85d..119c55377640 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -379,7 +379,6 @@ static struct apic __refdata apic_x2apic_uv_x = { .check_phys_apicid_present = default_check_phys_apicid_present, .enable_apic_mode = NULL, .phys_pkg_id = uv_phys_pkg_id, - .mps_oem_check = NULL, .get_apic_id = x2apic_get_apic_id, .set_apic_id = set_apic_id, diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c index fde86d2b79f8..2d2a237f2c73 100644 --- a/arch/x86/kernel/mpparse.c +++ b/arch/x86/kernel/mpparse.c @@ -216,9 +216,6 @@ static int __init smp_read_mpc(struct mpc_table *mpc, unsigned early) if (!smp_check_mpc(mpc, oem, str)) return 0; -#ifdef CONFIG_X86_32 - generic_mps_oem_check(mpc, oem, str); -#endif /* Initialize the lapic mapping */ if (!acpi_lapic) register_lapic_address(mpc->lapic); -- cgit v1.2.3-58-ga151 From 658ffd7e6f5ce62e15df99df5f9e181d76ffda8e Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Wed, 30 Jul 2014 23:53:37 -0700 Subject: x86, apic: Remove check_apicid_present callback The check_apicid_present() apic callback is never called, so remove it and functions that implement it. Signed-off-by: David Rientjes Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302350160.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/apic.h | 6 ------ arch/x86/kernel/apic/apic_flat_64.c | 2 -- arch/x86/kernel/apic/apic_noop.c | 6 ------ arch/x86/kernel/apic/apic_numachip.c | 1 - arch/x86/kernel/apic/bigsmp_32.c | 6 ------ arch/x86/kernel/apic/probe_32.c | 1 - arch/x86/kernel/apic/x2apic_cluster.c | 1 - arch/x86/kernel/apic/x2apic_phys.c | 1 - arch/x86/kernel/apic/x2apic_uv_x.c | 1 - 9 files changed, 25 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index 86d155026c3e..e1c0c2d4a961 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -292,7 +292,6 @@ struct apic { int dest_logical; unsigned long (*check_apicid_used)(physid_mask_t *map, int apicid); - unsigned long (*check_apicid_present)(int apicid); void (*vector_allocation_domain)(int cpu, struct cpumask *retmask, const struct cpumask *mask); @@ -608,11 +607,6 @@ static inline unsigned long default_check_apicid_used(physid_mask_t *map, int ap return physid_isset(apicid, *map); } -static inline unsigned long default_check_apicid_present(int bit) -{ - return physid_isset(bit, phys_cpu_present_map); -} - static inline void default_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap) { *retmap = *phys_map; diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c index 86c4203af12e..a8ed9ac1259b 100644 --- a/arch/x86/kernel/apic/apic_flat_64.c +++ b/arch/x86/kernel/apic/apic_flat_64.c @@ -168,7 +168,6 @@ static struct apic apic_flat = { .disable_esr = 0, .dest_logical = APIC_DEST_LOGICAL, .check_apicid_used = NULL, - .check_apicid_present = NULL, .vector_allocation_domain = flat_vector_allocation_domain, .init_apic_ldr = flat_init_apic_ldr, @@ -279,7 +278,6 @@ static struct apic apic_physflat = { .disable_esr = 0, .dest_logical = 0, .check_apicid_used = NULL, - .check_apicid_present = NULL, .vector_allocation_domain = default_vector_allocation_domain, /* not needed, but shouldn't hurt: */ diff --git a/arch/x86/kernel/apic/apic_noop.c b/arch/x86/kernel/apic/apic_noop.c index 6b25735cc1cd..8c165d9c204c 100644 --- a/arch/x86/kernel/apic/apic_noop.c +++ b/arch/x86/kernel/apic/apic_noop.c @@ -94,11 +94,6 @@ static unsigned long noop_check_apicid_used(physid_mask_t *map, int apicid) return physid_isset(apicid, *map); } -static unsigned long noop_check_apicid_present(int bit) -{ - return physid_isset(bit, phys_cpu_present_map); -} - static void noop_vector_allocation_domain(int cpu, struct cpumask *retmask, const struct cpumask *mask) { @@ -134,7 +129,6 @@ struct apic apic_noop = { .disable_esr = 0, .dest_logical = APIC_DEST_LOGICAL, .check_apicid_used = noop_check_apicid_used, - .check_apicid_present = noop_check_apicid_present, .vector_allocation_domain = noop_vector_allocation_domain, .init_apic_ldr = noop_init_apic_ldr, diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c index 5f835003634a..b49eb4047ef6 100644 --- a/arch/x86/kernel/apic/apic_numachip.c +++ b/arch/x86/kernel/apic/apic_numachip.c @@ -217,7 +217,6 @@ static const struct apic apic_numachip __refconst = { .disable_esr = 0, .dest_logical = 0, .check_apicid_used = NULL, - .check_apicid_present = NULL, .vector_allocation_domain = default_vector_allocation_domain, .init_apic_ldr = flat_init_apic_ldr, diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c index 90f6427687ea..163ad45331d8 100644 --- a/arch/x86/kernel/apic/bigsmp_32.c +++ b/arch/x86/kernel/apic/bigsmp_32.c @@ -31,11 +31,6 @@ static unsigned long bigsmp_check_apicid_used(physid_mask_t *map, int apicid) return 0; } -static unsigned long bigsmp_check_apicid_present(int bit) -{ - return 1; -} - static int bigsmp_early_logical_apicid(int cpu) { /* on bigsmp, logical apicid is the same as physical */ @@ -168,7 +163,6 @@ static struct apic apic_bigsmp = { .disable_esr = 1, .dest_logical = 0, .check_apicid_used = bigsmp_check_apicid_used, - .check_apicid_present = bigsmp_check_apicid_present, .vector_allocation_domain = default_vector_allocation_domain, .init_apic_ldr = bigsmp_init_apic_ldr, diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c index b4211f69e6a2..4d92ef883499 100644 --- a/arch/x86/kernel/apic/probe_32.c +++ b/arch/x86/kernel/apic/probe_32.c @@ -88,7 +88,6 @@ static struct apic apic_default = { .disable_esr = 0, .dest_logical = APIC_DEST_LOGICAL, .check_apicid_used = default_check_apicid_used, - .check_apicid_present = default_check_apicid_present, .vector_allocation_domain = flat_vector_allocation_domain, .init_apic_ldr = default_init_apic_ldr, diff --git a/arch/x86/kernel/apic/x2apic_cluster.c b/arch/x86/kernel/apic/x2apic_cluster.c index 7e4ac5587af0..d7bbe89b18da 100644 --- a/arch/x86/kernel/apic/x2apic_cluster.c +++ b/arch/x86/kernel/apic/x2apic_cluster.c @@ -249,7 +249,6 @@ static struct apic apic_x2apic_cluster = { .disable_esr = 0, .dest_logical = APIC_DEST_LOGICAL, .check_apicid_used = NULL, - .check_apicid_present = NULL, .vector_allocation_domain = cluster_vector_allocation_domain, .init_apic_ldr = init_x2apic_ldr, diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c index 01136e64c380..e23bec9ecd71 100644 --- a/arch/x86/kernel/apic/x2apic_phys.c +++ b/arch/x86/kernel/apic/x2apic_phys.c @@ -103,7 +103,6 @@ static struct apic apic_x2apic_phys = { .disable_esr = 0, .dest_logical = 0, .check_apicid_used = NULL, - .check_apicid_present = NULL, .vector_allocation_domain = default_vector_allocation_domain, .init_apic_ldr = init_x2apic_ldr, diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index 119c55377640..633732f10d5a 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -365,7 +365,6 @@ static struct apic __refdata apic_x2apic_uv_x = { .disable_esr = 0, .dest_logical = APIC_DEST_LOGICAL, .check_apicid_used = NULL, - .check_apicid_present = NULL, .vector_allocation_domain = default_vector_allocation_domain, .init_apic_ldr = uv_init_apic_ldr, -- cgit v1.2.3-58-ga151 From 4c59f3e63d5a0673af8abbce64467a6b497c94d2 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Wed, 30 Jul 2014 23:53:40 -0700 Subject: x86, apic: Replace noop_check_apicid_used noop_check_apicid_used() has the same implementation as default_check_apicid_used() in the standard header file, so replace the former with the latter. Signed-off-by: David Rientjes Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302350450.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin --- arch/x86/kernel/apic/apic_noop.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/apic/apic_noop.c b/arch/x86/kernel/apic/apic_noop.c index 8c165d9c204c..c480dac40f90 100644 --- a/arch/x86/kernel/apic/apic_noop.c +++ b/arch/x86/kernel/apic/apic_noop.c @@ -89,11 +89,6 @@ static const struct cpumask *noop_target_cpus(void) return cpumask_of(0); } -static unsigned long noop_check_apicid_used(physid_mask_t *map, int apicid) -{ - return physid_isset(apicid, *map); -} - static void noop_vector_allocation_domain(int cpu, struct cpumask *retmask, const struct cpumask *mask) { @@ -128,7 +123,7 @@ struct apic apic_noop = { .target_cpus = noop_target_cpus, .disable_esr = 0, .dest_logical = APIC_DEST_LOGICAL, - .check_apicid_used = noop_check_apicid_used, + .check_apicid_used = default_check_apicid_used, .vector_allocation_domain = noop_vector_allocation_domain, .init_apic_ldr = noop_init_apic_ldr, -- cgit v1.2.3-58-ga151 From e76661ba09353efd04e3435ac15bb9444f5cf1fa Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Wed, 30 Jul 2014 23:53:43 -0700 Subject: x86, apic: Remove multi_timer_check callback Since commit b5660ba76b41 ("x86, platforms: Remove NUMAQ") removed NUMAQ, the multi_timer_check() apic callback has been obsolete. Remove it. Signed-off-by: David Rientjes Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302351120.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/apic.h | 1 - arch/x86/kernel/apic/apic_flat_64.c | 2 -- arch/x86/kernel/apic/apic_noop.c | 1 - arch/x86/kernel/apic/apic_numachip.c | 1 - arch/x86/kernel/apic/bigsmp_32.c | 1 - arch/x86/kernel/apic/io_apic.c | 16 ---------------- arch/x86/kernel/apic/probe_32.c | 1 - arch/x86/kernel/apic/x2apic_cluster.c | 1 - arch/x86/kernel/apic/x2apic_phys.c | 1 - arch/x86/kernel/apic/x2apic_uv_x.c | 1 - 10 files changed, 26 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index e1c0c2d4a961..d8da5fc6a54d 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -300,7 +300,6 @@ struct apic { void (*ioapic_phys_id_map)(physid_mask_t *phys_map, physid_mask_t *retmap); void (*setup_apic_routing)(void); - int (*multi_timer_check)(int apic, int irq); int (*cpu_present_to_apicid)(int mps_cpu); void (*apicid_to_cpu_present)(int phys_apicid, physid_mask_t *retmap); void (*setup_portio_remap)(void); diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c index a8ed9ac1259b..f23b5e8d1bbb 100644 --- a/arch/x86/kernel/apic/apic_flat_64.c +++ b/arch/x86/kernel/apic/apic_flat_64.c @@ -174,7 +174,6 @@ static struct apic apic_flat = { .ioapic_phys_id_map = NULL, .setup_apic_routing = NULL, - .multi_timer_check = NULL, .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, .setup_portio_remap = NULL, @@ -285,7 +284,6 @@ static struct apic apic_physflat = { .ioapic_phys_id_map = NULL, .setup_apic_routing = NULL, - .multi_timer_check = NULL, .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, .setup_portio_remap = NULL, diff --git a/arch/x86/kernel/apic/apic_noop.c b/arch/x86/kernel/apic/apic_noop.c index c480dac40f90..66a91e5fc23d 100644 --- a/arch/x86/kernel/apic/apic_noop.c +++ b/arch/x86/kernel/apic/apic_noop.c @@ -130,7 +130,6 @@ struct apic apic_noop = { .ioapic_phys_id_map = default_ioapic_phys_id_map, .setup_apic_routing = NULL, - .multi_timer_check = NULL, .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = physid_set_mask_of_physid, diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c index b49eb4047ef6..3d7f6b2e312d 100644 --- a/arch/x86/kernel/apic/apic_numachip.c +++ b/arch/x86/kernel/apic/apic_numachip.c @@ -223,7 +223,6 @@ static const struct apic apic_numachip __refconst = { .ioapic_phys_id_map = NULL, .setup_apic_routing = NULL, - .multi_timer_check = NULL, .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, .setup_portio_remap = NULL, diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c index 163ad45331d8..fa99280ee90e 100644 --- a/arch/x86/kernel/apic/bigsmp_32.c +++ b/arch/x86/kernel/apic/bigsmp_32.c @@ -169,7 +169,6 @@ static struct apic apic_bigsmp = { .ioapic_phys_id_map = bigsmp_ioapic_phys_id_map, .setup_apic_routing = bigsmp_setup_apic_routing, - .multi_timer_check = NULL, .cpu_present_to_apicid = bigsmp_cpu_present_to_apicid, .apicid_to_cpu_present = physid_set_mask_of_physid, .setup_portio_remap = NULL, diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index a44dce8cc559..29290f554e79 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -3882,14 +3882,6 @@ int mp_irqdomain_map(struct irq_domain *domain, unsigned int virq, struct mp_pin_info *info = mp_pin_info(ioapic, hwirq); struct io_apic_irq_attr attr; - /* - * Skip the timer IRQ if there's a quirk handler installed and if it - * returns 1: - */ - if (apic->multi_timer_check && - apic->multi_timer_check(ioapic, virq)) - return 0; - /* Get default attribute if not set by caller yet */ if (!info->set) { u32 gsi = mp_pin_to_gsi(ioapic, hwirq); @@ -3919,14 +3911,6 @@ void mp_irqdomain_unmap(struct irq_domain *domain, unsigned int virq) int ioapic = (int)(long)domain->host_data; int pin = (int)data->hwirq; - /* - * Skip the timer IRQ if there's a quirk handler installed and if it - * returns 1: - */ - if (apic->multi_timer_check && - apic->multi_timer_check(ioapic, virq)) - return; - ioapic_mask_entry(ioapic, pin); __remove_pin_from_irq(cfg, ioapic, pin); WARN_ON(cfg->irq_2_pin != NULL); diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c index 4d92ef883499..a445842f24fe 100644 --- a/arch/x86/kernel/apic/probe_32.c +++ b/arch/x86/kernel/apic/probe_32.c @@ -94,7 +94,6 @@ static struct apic apic_default = { .ioapic_phys_id_map = default_ioapic_phys_id_map, .setup_apic_routing = setup_apic_flat_routing, - .multi_timer_check = NULL, .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = physid_set_mask_of_physid, .setup_portio_remap = NULL, diff --git a/arch/x86/kernel/apic/x2apic_cluster.c b/arch/x86/kernel/apic/x2apic_cluster.c index d7bbe89b18da..88eeaa90c91c 100644 --- a/arch/x86/kernel/apic/x2apic_cluster.c +++ b/arch/x86/kernel/apic/x2apic_cluster.c @@ -255,7 +255,6 @@ static struct apic apic_x2apic_cluster = { .ioapic_phys_id_map = NULL, .setup_apic_routing = NULL, - .multi_timer_check = NULL, .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, .setup_portio_remap = NULL, diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c index e23bec9ecd71..29614ae682e7 100644 --- a/arch/x86/kernel/apic/x2apic_phys.c +++ b/arch/x86/kernel/apic/x2apic_phys.c @@ -109,7 +109,6 @@ static struct apic apic_x2apic_phys = { .ioapic_phys_id_map = NULL, .setup_apic_routing = NULL, - .multi_timer_check = NULL, .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, .setup_portio_remap = NULL, diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index 633732f10d5a..53760128fd2b 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -371,7 +371,6 @@ static struct apic __refdata apic_x2apic_uv_x = { .ioapic_phys_id_map = NULL, .setup_apic_routing = NULL, - .multi_timer_check = NULL, .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, .setup_portio_remap = NULL, -- cgit v1.2.3-58-ga151 From 11a8318ef5a69cdb9be61f726d6e078d70af6129 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Wed, 30 Jul 2014 23:53:47 -0700 Subject: x86, apic: Remove setup_portio_remap callback Since commit b5660ba76b41 ("x86, platforms: Remove NUMAQ") removed NUMAQ, the setup_portio_remap() apic callback has been obsolete. Remove it. Signed-off-by: David Rientjes Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302351480.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/apic.h | 1 - arch/x86/kernel/apic/apic_flat_64.c | 2 -- arch/x86/kernel/apic/apic_noop.c | 1 - arch/x86/kernel/apic/apic_numachip.c | 1 - arch/x86/kernel/apic/bigsmp_32.c | 1 - arch/x86/kernel/apic/probe_32.c | 1 - arch/x86/kernel/apic/x2apic_cluster.c | 1 - arch/x86/kernel/apic/x2apic_phys.c | 1 - arch/x86/kernel/apic/x2apic_uv_x.c | 1 - arch/x86/kernel/smpboot.c | 4 ---- 10 files changed, 14 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index d8da5fc6a54d..e776ed29b74c 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -302,7 +302,6 @@ struct apic { void (*setup_apic_routing)(void); int (*cpu_present_to_apicid)(int mps_cpu); void (*apicid_to_cpu_present)(int phys_apicid, physid_mask_t *retmap); - void (*setup_portio_remap)(void); int (*check_phys_apicid_present)(int phys_apicid); void (*enable_apic_mode)(void); int (*phys_pkg_id)(int cpuid_apic, int index_msb); diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c index f23b5e8d1bbb..67d7a9da342c 100644 --- a/arch/x86/kernel/apic/apic_flat_64.c +++ b/arch/x86/kernel/apic/apic_flat_64.c @@ -176,7 +176,6 @@ static struct apic apic_flat = { .setup_apic_routing = NULL, .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, - .setup_portio_remap = NULL, .check_phys_apicid_present = default_check_phys_apicid_present, .enable_apic_mode = NULL, .phys_pkg_id = flat_phys_pkg_id, @@ -286,7 +285,6 @@ static struct apic apic_physflat = { .setup_apic_routing = NULL, .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, - .setup_portio_remap = NULL, .check_phys_apicid_present = default_check_phys_apicid_present, .enable_apic_mode = NULL, .phys_pkg_id = flat_phys_pkg_id, diff --git a/arch/x86/kernel/apic/apic_noop.c b/arch/x86/kernel/apic/apic_noop.c index 66a91e5fc23d..fe5d5e6b479e 100644 --- a/arch/x86/kernel/apic/apic_noop.c +++ b/arch/x86/kernel/apic/apic_noop.c @@ -134,7 +134,6 @@ struct apic apic_noop = { .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = physid_set_mask_of_physid, - .setup_portio_remap = NULL, .check_phys_apicid_present = default_check_phys_apicid_present, .enable_apic_mode = NULL, diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c index 3d7f6b2e312d..6b55be3596b5 100644 --- a/arch/x86/kernel/apic/apic_numachip.c +++ b/arch/x86/kernel/apic/apic_numachip.c @@ -225,7 +225,6 @@ static const struct apic apic_numachip __refconst = { .setup_apic_routing = NULL, .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, - .setup_portio_remap = NULL, .check_phys_apicid_present = default_check_phys_apicid_present, .enable_apic_mode = NULL, .phys_pkg_id = numachip_phys_pkg_id, diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c index fa99280ee90e..349465aa2454 100644 --- a/arch/x86/kernel/apic/bigsmp_32.c +++ b/arch/x86/kernel/apic/bigsmp_32.c @@ -171,7 +171,6 @@ static struct apic apic_bigsmp = { .setup_apic_routing = bigsmp_setup_apic_routing, .cpu_present_to_apicid = bigsmp_cpu_present_to_apicid, .apicid_to_cpu_present = physid_set_mask_of_physid, - .setup_portio_remap = NULL, .check_phys_apicid_present = bigsmp_check_phys_apicid_present, .enable_apic_mode = NULL, .phys_pkg_id = bigsmp_phys_pkg_id, diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c index a445842f24fe..45ad6d894bb3 100644 --- a/arch/x86/kernel/apic/probe_32.c +++ b/arch/x86/kernel/apic/probe_32.c @@ -96,7 +96,6 @@ static struct apic apic_default = { .setup_apic_routing = setup_apic_flat_routing, .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = physid_set_mask_of_physid, - .setup_portio_remap = NULL, .check_phys_apicid_present = default_check_phys_apicid_present, .enable_apic_mode = NULL, .phys_pkg_id = default_phys_pkg_id, diff --git a/arch/x86/kernel/apic/x2apic_cluster.c b/arch/x86/kernel/apic/x2apic_cluster.c index 88eeaa90c91c..ac70128aa9e9 100644 --- a/arch/x86/kernel/apic/x2apic_cluster.c +++ b/arch/x86/kernel/apic/x2apic_cluster.c @@ -257,7 +257,6 @@ static struct apic apic_x2apic_cluster = { .setup_apic_routing = NULL, .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, - .setup_portio_remap = NULL, .check_phys_apicid_present = default_check_phys_apicid_present, .enable_apic_mode = NULL, .phys_pkg_id = x2apic_phys_pkg_id, diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c index 29614ae682e7..90eb77f81147 100644 --- a/arch/x86/kernel/apic/x2apic_phys.c +++ b/arch/x86/kernel/apic/x2apic_phys.c @@ -111,7 +111,6 @@ static struct apic apic_x2apic_phys = { .setup_apic_routing = NULL, .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, - .setup_portio_remap = NULL, .check_phys_apicid_present = default_check_phys_apicid_present, .enable_apic_mode = NULL, .phys_pkg_id = x2apic_phys_pkg_id, diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index 53760128fd2b..480c05d8df22 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -373,7 +373,6 @@ static struct apic __refdata apic_x2apic_uv_x = { .setup_apic_routing = NULL, .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, - .setup_portio_remap = NULL, .check_phys_apicid_present = default_check_phys_apicid_present, .enable_apic_mode = NULL, .phys_pkg_id = uv_phys_pkg_id, diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index f0f3b194e9f9..2d872e08fab9 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -1139,10 +1139,6 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus) enable_IO_APIC(); bsp_end_local_APIC_setup(); - - if (apic->setup_portio_remap) - apic->setup_portio_remap(); - smpboot_setup_io_apic(); /* * Set up local APIC timer on boot CPU. -- cgit v1.2.3-58-ga151 From 2f078b9cb8798cdabb7c2ff24b0b683eea546f96 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Wed, 30 Jul 2014 23:53:51 -0700 Subject: x86, apic: Remove enable_apic_mode callback The enable_apic_mode() apic callback is never called, so remove it. Signed-off-by: David Rientjes Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1407302352320.17503@chino.kir.corp.google.com Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/apic.h | 1 - arch/x86/kernel/apic/apic.c | 2 -- arch/x86/kernel/apic/apic_flat_64.c | 2 -- arch/x86/kernel/apic/apic_noop.c | 1 - arch/x86/kernel/apic/apic_numachip.c | 1 - arch/x86/kernel/apic/bigsmp_32.c | 1 - arch/x86/kernel/apic/probe_32.c | 1 - arch/x86/kernel/apic/x2apic_cluster.c | 1 - arch/x86/kernel/apic/x2apic_phys.c | 1 - arch/x86/kernel/apic/x2apic_uv_x.c | 1 - 10 files changed, 12 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index e776ed29b74c..c31fded99cf4 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -303,7 +303,6 @@ struct apic { int (*cpu_present_to_apicid)(int mps_cpu); void (*apicid_to_cpu_present)(int phys_apicid, physid_mask_t *retmap); int (*check_phys_apicid_present)(int phys_apicid); - void (*enable_apic_mode)(void); int (*phys_pkg_id)(int cpuid_apic, int index_msb); unsigned int (*get_apic_id)(unsigned long x); diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index d705bb7ed91b..67760275544b 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -2042,8 +2042,6 @@ void __init connect_bsp_APIC(void) imcr_pic_to_apic(); } #endif - if (apic->enable_apic_mode) - apic->enable_apic_mode(); } /** diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c index 67d7a9da342c..de918c410eae 100644 --- a/arch/x86/kernel/apic/apic_flat_64.c +++ b/arch/x86/kernel/apic/apic_flat_64.c @@ -177,7 +177,6 @@ static struct apic apic_flat = { .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, .check_phys_apicid_present = default_check_phys_apicid_present, - .enable_apic_mode = NULL, .phys_pkg_id = flat_phys_pkg_id, .get_apic_id = flat_get_apic_id, @@ -286,7 +285,6 @@ static struct apic apic_physflat = { .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, .check_phys_apicid_present = default_check_phys_apicid_present, - .enable_apic_mode = NULL, .phys_pkg_id = flat_phys_pkg_id, .get_apic_id = flat_get_apic_id, diff --git a/arch/x86/kernel/apic/apic_noop.c b/arch/x86/kernel/apic/apic_noop.c index fe5d5e6b479e..b205cdbdbe6a 100644 --- a/arch/x86/kernel/apic/apic_noop.c +++ b/arch/x86/kernel/apic/apic_noop.c @@ -135,7 +135,6 @@ struct apic apic_noop = { .apicid_to_cpu_present = physid_set_mask_of_physid, .check_phys_apicid_present = default_check_phys_apicid_present, - .enable_apic_mode = NULL, .phys_pkg_id = noop_phys_pkg_id, diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c index 6b55be3596b5..ae915391ebec 100644 --- a/arch/x86/kernel/apic/apic_numachip.c +++ b/arch/x86/kernel/apic/apic_numachip.c @@ -226,7 +226,6 @@ static const struct apic apic_numachip __refconst = { .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, .check_phys_apicid_present = default_check_phys_apicid_present, - .enable_apic_mode = NULL, .phys_pkg_id = numachip_phys_pkg_id, .get_apic_id = get_apic_id, diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c index 349465aa2454..c4a8d63f8220 100644 --- a/arch/x86/kernel/apic/bigsmp_32.c +++ b/arch/x86/kernel/apic/bigsmp_32.c @@ -172,7 +172,6 @@ static struct apic apic_bigsmp = { .cpu_present_to_apicid = bigsmp_cpu_present_to_apicid, .apicid_to_cpu_present = physid_set_mask_of_physid, .check_phys_apicid_present = bigsmp_check_phys_apicid_present, - .enable_apic_mode = NULL, .phys_pkg_id = bigsmp_phys_pkg_id, .get_apic_id = bigsmp_get_apic_id, diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c index 45ad6d894bb3..bda488680dbc 100644 --- a/arch/x86/kernel/apic/probe_32.c +++ b/arch/x86/kernel/apic/probe_32.c @@ -97,7 +97,6 @@ static struct apic apic_default = { .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = physid_set_mask_of_physid, .check_phys_apicid_present = default_check_phys_apicid_present, - .enable_apic_mode = NULL, .phys_pkg_id = default_phys_pkg_id, .get_apic_id = default_get_apic_id, diff --git a/arch/x86/kernel/apic/x2apic_cluster.c b/arch/x86/kernel/apic/x2apic_cluster.c index ac70128aa9e9..6ce600f9bc78 100644 --- a/arch/x86/kernel/apic/x2apic_cluster.c +++ b/arch/x86/kernel/apic/x2apic_cluster.c @@ -258,7 +258,6 @@ static struct apic apic_x2apic_cluster = { .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, .check_phys_apicid_present = default_check_phys_apicid_present, - .enable_apic_mode = NULL, .phys_pkg_id = x2apic_phys_pkg_id, .get_apic_id = x2apic_get_apic_id, diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c index 90eb77f81147..6fae733e9194 100644 --- a/arch/x86/kernel/apic/x2apic_phys.c +++ b/arch/x86/kernel/apic/x2apic_phys.c @@ -112,7 +112,6 @@ static struct apic apic_x2apic_phys = { .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, .check_phys_apicid_present = default_check_phys_apicid_present, - .enable_apic_mode = NULL, .phys_pkg_id = x2apic_phys_pkg_id, .get_apic_id = x2apic_get_apic_id, diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index 480c05d8df22..004f017aa7b9 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -374,7 +374,6 @@ static struct apic __refdata apic_x2apic_uv_x = { .cpu_present_to_apicid = default_cpu_present_to_apicid, .apicid_to_cpu_present = NULL, .check_phys_apicid_present = default_check_phys_apicid_present, - .enable_apic_mode = NULL, .phys_pkg_id = uv_phys_pkg_id, .get_apic_id = x2apic_get_apic_id, -- cgit v1.2.3-58-ga151 From 5e3bf215f4f2efc0af89e6dbc5da789744aeb5d7 Mon Sep 17 00:00:00 2001 From: "H. Peter Anvin" Date: Fri, 1 Aug 2014 14:47:56 -0700 Subject: x86/apic/vsmp: Make is_vsmp_box() static Since checkin 411cf9ee2946 x86, vsmp: Remove is_vsmp_box() from apic_is_clustered_box() ... is_vsmp_box() is only used in vsmp_64.c and does not have any header file declaring it, so make it explicitly static. Reported-by: kbuild test robot Cc: Shai Fultheim Cc: Oren Twaig Link: http://lkml.kernel.org/r/1404036068-11674-1-git-send-email-oren@scalemp.com Signed-off-by: H. Peter Anvin --- arch/x86/kernel/vsmp_64.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/vsmp_64.c b/arch/x86/kernel/vsmp_64.c index b99b9ad8540c..ee22c1d93ae5 100644 --- a/arch/x86/kernel/vsmp_64.c +++ b/arch/x86/kernel/vsmp_64.c @@ -152,7 +152,7 @@ static void __init detect_vsmp_box(void) is_vsmp = 1; } -int is_vsmp_box(void) +static int is_vsmp_box(void) { if (is_vsmp != -1) return is_vsmp; @@ -166,7 +166,7 @@ int is_vsmp_box(void) static void __init detect_vsmp_box(void) { } -int is_vsmp_box(void) +static int is_vsmp_box(void) { return 0; } -- cgit v1.2.3-58-ga151 From 3eec595235c17a74094daa1e02d1b0af2e9a7125 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Fri, 8 Aug 2014 14:07:51 +0800 Subject: x86, irq, PCI: Keep IRQ assignment for PCI devices during suspend/hibernation Now IOAPIC driver dynamically allocates IRQ numbers for IOAPIC pins. We need to keep IRQ assignment for PCI devices during suspend/hibernation, otherwise it may cause failure of suspend/hibernation due to: 1) Device driver calls pci_enable_device() to allocate an IRQ number and register interrupt handler on the returned IRQ. 2) Device driver's suspend callback calls pci_disable_device() and release assigned IRQ in turn. 3) Device driver's resume callback calls pci_enable_device() to allocate IRQ number again. A different IRQ number may be assigned by IOAPIC driver this time. 4) Now the hardware delivers interrupt to the new IRQ but interrupt handler is still registered against the old IRQ, so it breaks suspend/hibernation. To fix this issue, we keep IRQ assignment during suspend/hibernation. Flag pci_dev.dev.power.is_prepared is used to detect that pci_disable_device() is called during suspend/hibernation. Reported-and-Tested-by: Borislav Petkov Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Grant Likely Cc: Len Brown Link: http://lkml.kernel.org/r/1407478071-29399-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/pci/intel_mid_pci.c | 2 +- arch/x86/pci/irq.c | 3 ++- drivers/acpi/pci_irq.c | 4 ++++ 3 files changed, 7 insertions(+), 2 deletions(-) (limited to 'arch/x86') diff --git a/arch/x86/pci/intel_mid_pci.c b/arch/x86/pci/intel_mid_pci.c index 09fece368592..3865116c51fb 100644 --- a/arch/x86/pci/intel_mid_pci.c +++ b/arch/x86/pci/intel_mid_pci.c @@ -229,7 +229,7 @@ static int intel_mid_pci_irq_enable(struct pci_dev *dev) static void intel_mid_pci_irq_disable(struct pci_dev *dev) { - if (dev->irq > 0) + if (!dev->dev.power.is_prepared && dev->irq > 0) mp_unmap_irq(dev->irq); } diff --git a/arch/x86/pci/irq.c b/arch/x86/pci/irq.c index 748cfe8ab322..bc1a2c341891 100644 --- a/arch/x86/pci/irq.c +++ b/arch/x86/pci/irq.c @@ -1256,7 +1256,8 @@ static int pirq_enable_irq(struct pci_dev *dev) static void pirq_disable_irq(struct pci_dev *dev) { - if (io_apic_assign_pci_irqs && dev->irq) { + if (io_apic_assign_pci_irqs && !dev->dev.power.is_prepared && + dev->irq) { mp_unmap_irq(dev->irq); dev->irq = 0; } diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c index 6ba463ceccc6..c96887d5289e 100644 --- a/drivers/acpi/pci_irq.c +++ b/drivers/acpi/pci_irq.c @@ -481,6 +481,10 @@ void acpi_pci_irq_disable(struct pci_dev *dev) if (!pin) return; + /* Keep IOAPIC pin configuration when suspending */ + if (dev->dev.power.is_prepared) + return; + entry = acpi_pci_irq_lookup(dev, pin); if (!entry) return; -- cgit v1.2.3-58-ga151