diff options
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/Kbuild.platforms | 1 | ||||
| -rw-r--r-- | arch/mips/Kconfig | 19 | ||||
| -rw-r--r-- | arch/mips/configs/mips_paravirt_defconfig | 98 | ||||
| -rw-r--r-- | arch/mips/include/asm/Kbuild | 1 | ||||
| -rw-r--r-- | arch/mips/include/asm/kvm_para.h | 115 | ||||
| -rw-r--r-- | arch/mips/include/uapi/asm/Kbuild | 2 | ||||
| -rw-r--r-- | arch/mips/include/uapi/asm/kvm_para.h | 5 | ||||
| -rw-r--r-- | arch/mips/paravirt/Kconfig | 7 | ||||
| -rw-r--r-- | arch/mips/paravirt/Makefile | 14 | ||||
| -rw-r--r-- | arch/mips/paravirt/Platform | 7 | ||||
| -rw-r--r-- | arch/mips/paravirt/paravirt-irq.c | 368 | ||||
| -rw-r--r-- | arch/mips/paravirt/paravirt-smp.c | 145 | ||||
| -rw-r--r-- | arch/mips/paravirt/serial.c | 39 | ||||
| -rw-r--r-- | arch/mips/paravirt/setup.c | 67 | ||||
| -rw-r--r-- | arch/mips/pci/Makefile | 1 | ||||
| -rw-r--r-- | arch/mips/pci/pci-virtio-guest.c | 131 |
16 files changed, 3 insertions, 1017 deletions
diff --git a/arch/mips/Kbuild.platforms b/arch/mips/Kbuild.platforms index c7368a81fd1e..a13c4cf6e608 100644 --- a/arch/mips/Kbuild.platforms +++ b/arch/mips/Kbuild.platforms @@ -20,7 +20,6 @@ platform-$(CONFIG_MACH_LOONGSON32) += loongson32/ platform-$(CONFIG_MACH_LOONGSON64) += loongson64/ platform-$(CONFIG_MIPS_MALTA) += mti-malta/ platform-$(CONFIG_NLM_COMMON) += netlogic/ -platform-$(CONFIG_MIPS_PARAVIRT) += paravirt/ platform-$(CONFIG_PIC32MZDA) += pic32/ platform-$(CONFIG_MACH_PISTACHIO) += pistachio/ platform-$(CONFIG_SOC_PNX833X) += pnx833x/ diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index eaf7519e3033..3d4a3a7d83a2 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1013,24 +1013,6 @@ config NLM_XLP_BOARD This board is based on Netlogic XLP Processor. Say Y here if you have a XLP based board. -config MIPS_PARAVIRT - bool "Para-Virtualized guest system" - select CEVT_R4K - select CSRC_R4K - select SYS_SUPPORTS_64BIT_KERNEL - select SYS_SUPPORTS_32BIT_KERNEL - select SYS_SUPPORTS_BIG_ENDIAN - select SYS_SUPPORTS_SMP - select NR_CPUS_DEFAULT_4 - select SYS_HAS_EARLY_PRINTK - select SYS_HAS_CPU_MIPS32_R2 - select SYS_HAS_CPU_MIPS64_R2 - select SYS_HAS_CPU_CAVIUM_OCTEON - select HAVE_PCI - select SWAP_IO_SPACE - help - This option supports guest running under ???? - endchoice source "arch/mips/alchemy/Kconfig" @@ -1055,7 +1037,6 @@ source "arch/mips/loongson2ef/Kconfig" source "arch/mips/loongson32/Kconfig" source "arch/mips/loongson64/Kconfig" source "arch/mips/netlogic/Kconfig" -source "arch/mips/paravirt/Kconfig" endmenu diff --git a/arch/mips/configs/mips_paravirt_defconfig b/arch/mips/configs/mips_paravirt_defconfig deleted file mode 100644 index 5599cde97030..000000000000 --- a/arch/mips/configs/mips_paravirt_defconfig +++ /dev/null @@ -1,98 +0,0 @@ -CONFIG_SYSVIPC=y -CONFIG_PREEMPT=y -CONFIG_BSD_PROCESS_ACCT=y -CONFIG_BSD_PROCESS_ACCT_V3=y -CONFIG_IKCONFIG=y -CONFIG_IKCONFIG_PROC=y -CONFIG_LOG_BUF_SHIFT=14 -CONFIG_RELAY=y -CONFIG_BLK_DEV_INITRD=y -CONFIG_EXPERT=y -CONFIG_SLAB=y -CONFIG_MIPS_PARAVIRT=y -CONFIG_CPU_MIPS64_R2=y -CONFIG_64BIT=y -CONFIG_SMP=y -CONFIG_HZ_1000=y -CONFIG_PCI=y -CONFIG_MIPS32_O32=y -CONFIG_MIPS32_N32=y -CONFIG_MODULES=y -CONFIG_MODULE_UNLOAD=y -# CONFIG_BLK_DEV_BSG is not set -CONFIG_TRANSPARENT_HUGEPAGE=y -CONFIG_NET=y -CONFIG_PACKET=y -CONFIG_UNIX=y -CONFIG_INET=y -CONFIG_IP_MULTICAST=y -CONFIG_IP_ADVANCED_ROUTER=y -CONFIG_IP_MULTIPLE_TABLES=y -CONFIG_IP_ROUTE_MULTIPATH=y -CONFIG_IP_ROUTE_VERBOSE=y -CONFIG_IP_PNP=y -CONFIG_IP_PNP_DHCP=y -CONFIG_IP_PNP_BOOTP=y -CONFIG_IP_PNP_RARP=y -CONFIG_IP_MROUTE=y -CONFIG_IP_PIMSM_V1=y -CONFIG_IP_PIMSM_V2=y -CONFIG_SYN_COOKIES=y -# CONFIG_WIRELESS is not set -# CONFIG_FW_LOADER is not set -CONFIG_BLK_DEV_LOOP=y -CONFIG_VIRTIO_BLK=y -CONFIG_SCSI=y -CONFIG_BLK_DEV_SD=y -CONFIG_NETDEVICES=y -CONFIG_VIRTIO_NET=y -# CONFIG_NET_VENDOR_BROADCOM is not set -# CONFIG_NET_VENDOR_INTEL is not set -# CONFIG_NET_VENDOR_MARVELL is not set -# CONFIG_NET_VENDOR_MICREL is not set -# CONFIG_NET_VENDOR_NATSEMI is not set -# CONFIG_NET_VENDOR_SMSC is not set -# CONFIG_NET_VENDOR_STMICRO is not set -# CONFIG_NET_VENDOR_WIZNET is not set -CONFIG_PHYLIB=y -CONFIG_BCM87XX_PHY=y -CONFIG_BROADCOM_PHY=y -CONFIG_MARVELL_PHY=y -# CONFIG_WLAN is not set -# CONFIG_INPUT is not set -# CONFIG_SERIO is not set -# CONFIG_VT is not set -CONFIG_VIRTIO_CONSOLE=y -# CONFIG_HW_RANDOM is not set -# CONFIG_HWMON is not set -# CONFIG_USB_SUPPORT is not set -CONFIG_VIRTIO_PCI=y -CONFIG_VIRTIO_BALLOON=y -CONFIG_VIRTIO_MMIO=y -# CONFIG_IOMMU_SUPPORT is not set -CONFIG_EXT4_FS=y -CONFIG_EXT4_FS_POSIX_ACL=y -CONFIG_EXT4_FS_SECURITY=y -CONFIG_MSDOS_FS=y -CONFIG_VFAT_FS=y -CONFIG_PROC_KCORE=y -CONFIG_TMPFS=y -CONFIG_HUGETLBFS=y -# CONFIG_MISC_FILESYSTEMS is not set -CONFIG_NFS_FS=y -CONFIG_NFS_V4=y -CONFIG_NFS_V4_1=y -CONFIG_ROOT_NFS=y -CONFIG_NLS_CODEPAGE_437=y -CONFIG_NLS_ASCII=y -CONFIG_NLS_ISO8859_1=y -CONFIG_NLS_UTF8=y -CONFIG_CRYPTO_CBC=y -CONFIG_CRYPTO_HMAC=y -CONFIG_CRYPTO_MD5=y -CONFIG_CRYPTO_DES=y -CONFIG_DEBUG_INFO=y -CONFIG_DEBUG_FS=y -CONFIG_MAGIC_SYSRQ=y -# CONFIG_SCHED_DEBUG is not set -# CONFIG_FTRACE is not set diff --git a/arch/mips/include/asm/Kbuild b/arch/mips/include/asm/Kbuild index 8643d313890e..198b3bafdac9 100644 --- a/arch/mips/include/asm/Kbuild +++ b/arch/mips/include/asm/Kbuild @@ -5,6 +5,7 @@ generated-y += syscall_table_64_n32.h generated-y += syscall_table_64_n64.h generated-y += syscall_table_64_o32.h generic-y += export.h +generic-y += kvm_para.h generic-y += local64.h generic-y += mcs_spinlock.h generic-y += parport.h diff --git a/arch/mips/include/asm/kvm_para.h b/arch/mips/include/asm/kvm_para.h deleted file mode 100644 index b57e978b0946..000000000000 --- a/arch/mips/include/asm/kvm_para.h +++ /dev/null @@ -1,115 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _ASM_MIPS_KVM_PARA_H -#define _ASM_MIPS_KVM_PARA_H - -#include <uapi/asm/kvm_para.h> - -#define KVM_HYPERCALL ".word 0x42000028" - -/* - * Hypercalls for KVM. - * - * Hypercall number is passed in v0. - * Return value will be placed in v0. - * Up to 3 arguments are passed in a0, a1, and a2. - */ -static inline unsigned long kvm_hypercall0(unsigned long num) -{ - register unsigned long n asm("v0"); - register unsigned long r asm("v0"); - - n = num; - __asm__ __volatile__( - KVM_HYPERCALL - : "=r" (r) : "r" (n) : "memory" - ); - - return r; -} - -static inline unsigned long kvm_hypercall1(unsigned long num, - unsigned long arg0) -{ - register unsigned long n asm("v0"); - register unsigned long r asm("v0"); - register unsigned long a0 asm("a0"); - - n = num; - a0 = arg0; - __asm__ __volatile__( - KVM_HYPERCALL - : "=r" (r) : "r" (n), "r" (a0) : "memory" - ); - - return r; -} - -static inline unsigned long kvm_hypercall2(unsigned long num, - unsigned long arg0, unsigned long arg1) -{ - register unsigned long n asm("v0"); - register unsigned long r asm("v0"); - register unsigned long a0 asm("a0"); - register unsigned long a1 asm("a1"); - - n = num; - a0 = arg0; - a1 = arg1; - __asm__ __volatile__( - KVM_HYPERCALL - : "=r" (r) : "r" (n), "r" (a0), "r" (a1) : "memory" - ); - - return r; -} - -static inline unsigned long kvm_hypercall3(unsigned long num, - unsigned long arg0, unsigned long arg1, unsigned long arg2) -{ - register unsigned long n asm("v0"); - register unsigned long r asm("v0"); - register unsigned long a0 asm("a0"); - register unsigned long a1 asm("a1"); - register unsigned long a2 asm("a2"); - - n = num; - a0 = arg0; - a1 = arg1; - a2 = arg2; - __asm__ __volatile__( - KVM_HYPERCALL - : "=r" (r) : "r" (n), "r" (a0), "r" (a1), "r" (a2) : "memory" - ); - - return r; -} - -static inline bool kvm_check_and_clear_guest_paused(void) -{ - return false; -} - -static inline unsigned int kvm_arch_para_features(void) -{ - return 0; -} - -static inline unsigned int kvm_arch_para_hints(void) -{ - return 0; -} - -#ifdef CONFIG_MIPS_PARAVIRT -static inline bool kvm_para_available(void) -{ - return true; -} -#else -static inline bool kvm_para_available(void) -{ - return false; -} -#endif - - -#endif /* _ASM_MIPS_KVM_PARA_H */ diff --git a/arch/mips/include/uapi/asm/Kbuild b/arch/mips/include/uapi/asm/Kbuild index c21c87ecdcd0..6db08385d3d8 100644 --- a/arch/mips/include/uapi/asm/Kbuild +++ b/arch/mips/include/uapi/asm/Kbuild @@ -5,3 +5,5 @@ generated-y += unistd_o32.h generated-y += unistd_nr_n32.h generated-y += unistd_nr_n64.h generated-y += unistd_nr_o32.h + +generic-y += kvm_para.h diff --git a/arch/mips/include/uapi/asm/kvm_para.h b/arch/mips/include/uapi/asm/kvm_para.h deleted file mode 100644 index 7e16d7c42e65..000000000000 --- a/arch/mips/include/uapi/asm/kvm_para.h +++ /dev/null @@ -1,5 +0,0 @@ -#ifndef _UAPI_ASM_MIPS_KVM_PARA_H -#define _UAPI_ASM_MIPS_KVM_PARA_H - - -#endif /* _UAPI_ASM_MIPS_KVM_PARA_H */ diff --git a/arch/mips/paravirt/Kconfig b/arch/mips/paravirt/Kconfig deleted file mode 100644 index 46b110fec967..000000000000 --- a/arch/mips/paravirt/Kconfig +++ /dev/null @@ -1,7 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -if MIPS_PARAVIRT - -config MIPS_PCI_VIRTIO - def_bool y - -endif # MIPS_PARAVIRT diff --git a/arch/mips/paravirt/Makefile b/arch/mips/paravirt/Makefile deleted file mode 100644 index 5023af733a35..000000000000 --- a/arch/mips/paravirt/Makefile +++ /dev/null @@ -1,14 +0,0 @@ -# -# Makefile for MIPS para-virtualized specific kernel interface routines -# under Linux. -# -# This file is subject to the terms and conditions of the GNU General Public -# License. See the file "COPYING" in the main directory of this archive -# for more details. -# -# Copyright (C) 2013 Cavium, Inc. -# - -obj-y := setup.o serial.o paravirt-irq.o - -obj-$(CONFIG_SMP) += paravirt-smp.o diff --git a/arch/mips/paravirt/Platform b/arch/mips/paravirt/Platform deleted file mode 100644 index 0b857580dfdd..000000000000 --- a/arch/mips/paravirt/Platform +++ /dev/null @@ -1,7 +0,0 @@ -# -# Generic para-virtualized guest. -# -cflags-$(CONFIG_MIPS_PARAVIRT) += \ - -I$(srctree)/arch/mips/include/asm/mach-paravirt - -load-$(CONFIG_MIPS_PARAVIRT) = 0xffffffff80010000 diff --git a/arch/mips/paravirt/paravirt-irq.c b/arch/mips/paravirt/paravirt-irq.c deleted file mode 100644 index 8987b06c9de9..000000000000 --- a/arch/mips/paravirt/paravirt-irq.c +++ /dev/null @@ -1,368 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2013 Cavium, Inc. - */ - -#include <linux/interrupt.h> -#include <linux/cpumask.h> -#include <linux/kernel.h> -#include <linux/mutex.h> - -#include <asm/io.h> - -#define MBOX_BITS_PER_CPU 2 - -static int cpunum_for_cpu(int cpu) -{ -#ifdef CONFIG_SMP - return cpu_logical_map(cpu); -#else - return get_ebase_cpunum(); -#endif -} - -struct core_chip_data { - struct mutex core_irq_mutex; - bool current_en; - bool desired_en; - u8 bit; -}; - -static struct core_chip_data irq_core_chip_data[8]; - -static void irq_core_ack(struct irq_data *data) -{ - struct core_chip_data *cd = irq_data_get_irq_chip_data(data); - unsigned int bit = cd->bit; - - /* - * We don't need to disable IRQs to make these atomic since - * they are already disabled earlier in the low level - * interrupt code. - */ - clear_c0_status(0x100 << bit); - /* The two user interrupts must be cleared manually. */ - if (bit < 2) - clear_c0_cause(0x100 << bit); -} - -static void irq_core_eoi(struct irq_data *data) -{ - struct core_chip_data *cd = irq_data_get_irq_chip_data(data); - - /* - * We don't need to disable IRQs to make these atomic since - * they are already disabled earlier in the low level - * interrupt code. - */ - set_c0_status(0x100 << cd->bit); -} - -static void irq_core_set_enable_local(void *arg) -{ - struct irq_data *data = arg; - struct core_chip_data *cd = irq_data_get_irq_chip_data(data); - unsigned int mask = 0x100 << cd->bit; - - /* - * Interrupts are already disabled, so these are atomic. - */ - if (cd->desired_en) - set_c0_status(mask); - else - clear_c0_status(mask); - -} - -static void irq_core_disable(struct irq_data *data) -{ - struct core_chip_data *cd = irq_data_get_irq_chip_data(data); - cd->desired_en = false; -} - -static void irq_core_enable(struct irq_data *data) -{ - struct core_chip_data *cd = irq_data_get_irq_chip_data(data); - cd->desired_en = true; -} - -static void irq_core_bus_lock(struct irq_data *data) -{ - struct core_chip_data *cd = irq_data_get_irq_chip_data(data); - - mutex_lock(&cd->core_irq_mutex); -} - -static void irq_core_bus_sync_unlock(struct irq_data *data) -{ - struct core_chip_data *cd = irq_data_get_irq_chip_data(data); - - if (cd->desired_en != cd->current_en) { - on_each_cpu(irq_core_set_enable_local, data, 1); - cd->current_en = cd->desired_en; - } - - mutex_unlock(&cd->core_irq_mutex); -} - -static struct irq_chip irq_chip_core = { - .name = "Core", - .irq_enable = irq_core_enable, - .irq_disable = irq_core_disable, - .irq_ack = irq_core_ack, - .irq_eoi = irq_core_eoi, - .irq_bus_lock = irq_core_bus_lock, - .irq_bus_sync_unlock = irq_core_bus_sync_unlock, - - .irq_cpu_online = irq_core_eoi, - .irq_cpu_offline = irq_core_ack, - .flags = IRQCHIP_ONOFFLINE_ENABLED, -}; - -static void __init irq_init_core(void) -{ - int i; - int irq; - struct core_chip_data *cd; - - /* Start with a clean slate */ - clear_c0_status(ST0_IM); - clear_c0_cause(CAUSEF_IP0 | CAUSEF_IP1); - - for (i = 0; i < ARRAY_SIZE(irq_core_chip_data); i++) { - cd = irq_core_chip_data + i; - cd->current_en = false; - cd->desired_en = false; - cd->bit = i; - mutex_init(&cd->core_irq_mutex); - - irq = MIPS_CPU_IRQ_BASE + i; - - switch (i) { - case 0: /* SW0 */ - case 1: /* SW1 */ - case 5: /* IP5 */ - case 6: /* IP6 */ - case 7: /* IP7 */ - irq_set_chip_data(irq, cd); - irq_set_chip_and_handler(irq, &irq_chip_core, - handle_percpu_irq); - break; - default: - break; - } - } -} - -static void __iomem *mips_irq_chip; -#define MIPS_IRQ_CHIP_NUM_BITS 0 -#define MIPS_IRQ_CHIP_REGS 8 - -static int mips_irq_cpu_stride; -static int mips_irq_chip_reg_raw; -static int mips_irq_chip_reg_src; -static int mips_irq_chip_reg_en; -static int mips_irq_chip_reg_raw_w1s; -static int mips_irq_chip_reg_raw_w1c; -static int mips_irq_chip_reg_en_w1s; -static int mips_irq_chip_reg_en_w1c; - -static void irq_pci_enable(struct irq_data *data) -{ - u32 mask = 1u << data->irq; - - __raw_writel(mask, mips_irq_chip + mips_irq_chip_reg_en_w1s); -} - -static void irq_pci_disable(struct irq_data *data) -{ - u32 mask = 1u << data->irq; - - __raw_writel(mask, mips_irq_chip + mips_irq_chip_reg_en_w1c); -} - -static void irq_pci_ack(struct irq_data *data) -{ -} - -static void irq_pci_mask(struct irq_data *data) -{ - u32 mask = 1u << data->irq; - - __raw_writel(mask, mips_irq_chip + mips_irq_chip_reg_en_w1c); -} - -static void irq_pci_unmask(struct irq_data *data) -{ - u32 mask = 1u << data->irq; - - __raw_writel(mask, mips_irq_chip + mips_irq_chip_reg_en_w1s); -} - -static struct irq_chip irq_chip_pci = { - .name = "PCI", - .irq_enable = irq_pci_enable, - .irq_disable = irq_pci_disable, - .irq_ack = irq_pci_ack, - .irq_mask = irq_pci_mask, - .irq_unmask = irq_pci_unmask, -}; - -static void irq_mbox_all(struct irq_data *data, void __iomem *base) -{ - int cpu; - unsigned int mbox = data->irq - MIPS_IRQ_MBOX0; - u32 mask; - - WARN_ON(mbox >= MBOX_BITS_PER_CPU); - - for_each_online_cpu(cpu) { - unsigned int cpuid = cpunum_for_cpu(cpu); - mask = 1 << (cpuid * MBOX_BITS_PER_CPU + mbox); - __raw_writel(mask, base + (cpuid * mips_irq_cpu_stride)); - } -} - -static void irq_mbox_enable(struct irq_data *data) -{ - irq_mbox_all(data, mips_irq_chip + mips_irq_chip_reg_en_w1s + sizeof(u32)); -} - -static void irq_mbox_disable(struct irq_data *data) -{ - irq_mbox_all(data, mips_irq_chip + mips_irq_chip_reg_en_w1c + sizeof(u32)); -} - -static void irq_mbox_ack(struct irq_data *data) -{ - u32 mask; - unsigned int mbox = data->irq - MIPS_IRQ_MBOX0; - - WARN_ON(mbox >= MBOX_BITS_PER_CPU); - - mask = 1 << (get_ebase_cpunum() * MBOX_BITS_PER_CPU + mbox); - __raw_writel(mask, mips_irq_chip + mips_irq_chip_reg_raw_w1c + sizeof(u32)); -} - -void irq_mbox_ipi(int cpu, unsigned int actions) -{ - unsigned int cpuid = cpunum_for_cpu(cpu); - u32 mask; - - WARN_ON(actions >= (1 << MBOX_BITS_PER_CPU)); - - mask = actions << (cpuid * MBOX_BITS_PER_CPU); - __raw_writel(mask, mips_irq_chip + mips_irq_chip_reg_raw_w1s + sizeof(u32)); -} - -static void irq_mbox_cpu_onoffline(struct irq_data *data, void __iomem *base) -{ - unsigned int mbox = data->irq - MIPS_IRQ_MBOX0; - unsigned int cpuid = get_ebase_cpunum(); - u32 mask; - - WARN_ON(mbox >= MBOX_BITS_PER_CPU); - - mask = 1 << (cpuid * MBOX_BITS_PER_CPU + mbox); - __raw_writel(mask, base + (cpuid * mips_irq_cpu_stride)); - -} - -static void irq_mbox_cpu_online(struct irq_data *data) -{ - irq_mbox_cpu_onoffline(data, mips_irq_chip + mips_irq_chip_reg_en_w1s + sizeof(u32)); -} - -static void irq_mbox_cpu_offline(struct irq_data *data) -{ - irq_mbox_cpu_onoffline(data, mips_irq_chip + mips_irq_chip_reg_en_w1c + sizeof(u32)); -} - -static struct irq_chip irq_chip_mbox = { - .name = "MBOX", - .irq_enable = irq_mbox_enable, - .irq_disable = irq_mbox_disable, - .irq_ack = irq_mbox_ack, - .irq_cpu_online = irq_mbox_cpu_online, - .irq_cpu_offline = irq_mbox_cpu_offline, - .flags = IRQCHIP_ONOFFLINE_ENABLED, -}; - -static void __init irq_pci_init(void) -{ - int i, stride; - u32 num_bits; - - mips_irq_chip = ioremap(0x1e010000, 4096); - - num_bits = __raw_readl(mips_irq_chip + MIPS_IRQ_CHIP_NUM_BITS); - stride = 8 * (1 + ((num_bits - 1) / 64)); - - - pr_notice("mips_irq_chip: %u bits, reg stride: %d\n", num_bits, stride); - mips_irq_chip_reg_raw = MIPS_IRQ_CHIP_REGS + 0 * stride; - mips_irq_chip_reg_raw_w1s = MIPS_IRQ_CHIP_REGS + 1 * stride; - mips_irq_chip_reg_raw_w1c = MIPS_IRQ_CHIP_REGS + 2 * stride; - mips_irq_chip_reg_src = MIPS_IRQ_CHIP_REGS + 3 * stride; - mips_irq_chip_reg_en = MIPS_IRQ_CHIP_REGS + 4 * stride; - mips_irq_chip_reg_en_w1s = MIPS_IRQ_CHIP_REGS + 5 * stride; - mips_irq_chip_reg_en_w1c = MIPS_IRQ_CHIP_REGS + 6 * stride; - mips_irq_cpu_stride = stride * 4; - - for (i = 0; i < 4; i++) - irq_set_chip_and_handler(i + MIPS_IRQ_PCIA, &irq_chip_pci, handle_level_irq); - - for (i = 0; i < 2; i++) - irq_set_chip_and_handler(i + MIPS_IRQ_MBOX0, &irq_chip_mbox, handle_percpu_irq); - - - set_c0_status(STATUSF_IP2); -} - -static void irq_pci_dispatch(void) -{ - unsigned int cpuid = get_ebase_cpunum(); - u32 en; - - en = __raw_readl(mips_irq_chip + mips_irq_chip_reg_src + - (cpuid * mips_irq_cpu_stride)); - - if (!en) { - en = __raw_readl(mips_irq_chip + mips_irq_chip_reg_src + (cpuid * mips_irq_cpu_stride) + sizeof(u32)); - en = (en >> (2 * cpuid)) & 3; - - if (!en) - spurious_interrupt(); - else - do_IRQ(__ffs(en) + MIPS_IRQ_MBOX0); /* MBOX type */ - } else { - do_IRQ(__ffs(en)); - } -} - - -void __init arch_init_irq(void) -{ - irq_init_core(); - irq_pci_init(); -} - -asmlinkage void plat_irq_dispatch(void) -{ - unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM; - int ip; - - if (unlikely(!pending)) { - spurious_interrupt(); - return; - } - - ip = ffs(pending) - 1 - STATUSB_IP0; - if (ip == 2) - irq_pci_dispatch(); - else - do_IRQ(MIPS_CPU_IRQ_BASE + ip); -} diff --git a/arch/mips/paravirt/paravirt-smp.c b/arch/mips/paravirt/paravirt-smp.c deleted file mode 100644 index 107d9f90d668..000000000000 --- a/arch/mips/paravirt/paravirt-smp.c +++ /dev/null @@ -1,145 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2013 Cavium, Inc. - */ - -#include <linux/interrupt.h> -#include <linux/cpumask.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/sched/task_stack.h> - -#include <asm/mipsregs.h> -#include <asm/setup.h> -#include <asm/time.h> -#include <asm/smp.h> - -/* - * Writing the sp releases the CPU, so writes must be ordered, gp - * first, then sp. - */ -unsigned long paravirt_smp_sp[NR_CPUS]; -unsigned long paravirt_smp_gp[NR_CPUS]; - -static int numcpus = 1; - -static int __init set_numcpus(char *str) -{ - int newval; - - if (get_option(&str, &newval)) { - if (newval < 1 || newval >= NR_CPUS) - goto bad; - numcpus = newval; - return 0; - } -bad: - return -EINVAL; -} -early_param("numcpus", set_numcpus); - - -static void paravirt_smp_setup(void) -{ - int id; - unsigned int cpunum = get_ebase_cpunum(); - - if (WARN_ON(cpunum >= NR_CPUS)) - return; - - /* The present CPUs are initially just the boot cpu (CPU 0). */ - for (id = 0; id < NR_CPUS; id++) { - set_cpu_possible(id, id == 0); - set_cpu_present(id, id == 0); - } - __cpu_number_map[cpunum] = 0; - __cpu_logical_map[0] = cpunum; - - for (id = 0; id < numcpus; id++) { - set_cpu_possible(id, true); - set_cpu_present(id, true); - __cpu_number_map[id] = id; - __cpu_logical_map[id] = id; - } -} - -void irq_mbox_ipi(int cpu, unsigned int actions); -static void paravirt_send_ipi_single(int cpu, unsigned int action) -{ - irq_mbox_ipi(cpu, action); -} - -static void paravirt_send_ipi_mask(const struct cpumask *mask, unsigned int action) -{ - unsigned int cpu; - - for_each_cpu(cpu, mask) - paravirt_send_ipi_single(cpu, action); -} - -static void paravirt_init_secondary(void) -{ - unsigned int sr; - - sr = set_c0_status(ST0_BEV); - write_c0_ebase((u32)ebase); - - sr |= STATUSF_IP2; /* Interrupt controller on IP2 */ - write_c0_status(sr); - - irq_cpu_online(); -} - -static void paravirt_smp_finish(void) -{ - /* to generate the first CPU timer interrupt */ - write_c0_compare(read_c0_count() + mips_hpt_frequency / HZ); - local_irq_enable(); -} - -static int paravirt_boot_secondary(int cpu, struct task_struct *idle) -{ - paravirt_smp_gp[cpu] = (unsigned long)task_thread_info(idle); - smp_wmb(); - paravirt_smp_sp[cpu] = __KSTK_TOS(idle); - return 0; -} - -static irqreturn_t paravirt_reched_interrupt(int irq, void *dev_id) -{ - scheduler_ipi(); - return IRQ_HANDLED; -} - -static irqreturn_t paravirt_function_interrupt(int irq, void *dev_id) -{ - generic_smp_call_function_interrupt(); - return IRQ_HANDLED; -} - -static void paravirt_prepare_cpus(unsigned int max_cpus) -{ - if (request_irq(MIPS_IRQ_MBOX0, paravirt_reched_interrupt, - IRQF_PERCPU | IRQF_NO_THREAD, "Scheduler", - paravirt_reched_interrupt)) { - panic("Cannot request_irq for SchedulerIPI"); - } - if (request_irq(MIPS_IRQ_MBOX1, paravirt_function_interrupt, - IRQF_PERCPU | IRQF_NO_THREAD, "SMP-Call", - paravirt_function_interrupt)) { - panic("Cannot request_irq for SMP-Call"); - } -} - -const struct plat_smp_ops paravirt_smp_ops = { - .send_ipi_single = paravirt_send_ipi_single, - .send_ipi_mask = paravirt_send_ipi_mask, - .init_secondary = paravirt_init_secondary, - .smp_finish = paravirt_smp_finish, - .boot_secondary = paravirt_boot_secondary, - .smp_setup = paravirt_smp_setup, - .prepare_cpus = paravirt_prepare_cpus, -}; diff --git a/arch/mips/paravirt/serial.c b/arch/mips/paravirt/serial.c deleted file mode 100644 index a37b6f9f0ede..000000000000 --- a/arch/mips/paravirt/serial.c +++ /dev/null @@ -1,39 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2013 Cavium, Inc. - */ - -#include <linux/kernel.h> -#include <linux/virtio_console.h> -#include <linux/kvm_para.h> -#include <asm/setup.h> - -/* - * Emit one character to the boot console. - */ -void prom_putchar(char c) -{ - kvm_hypercall3(KVM_HC_MIPS_CONSOLE_OUTPUT, 0 /* port 0 */, - (unsigned long)&c, 1 /* len == 1 */); -} - -#ifdef CONFIG_VIRTIO_CONSOLE -static int paravirt_put_chars(u32 vtermno, const char *buf, int count) -{ - kvm_hypercall3(KVM_HC_MIPS_CONSOLE_OUTPUT, vtermno, - (unsigned long)buf, count); - - return count; -} - -static int __init paravirt_cons_init(void) -{ - virtio_cons_early_init(paravirt_put_chars); - return 0; -} -core_initcall(paravirt_cons_init); - -#endif diff --git a/arch/mips/paravirt/setup.c b/arch/mips/paravirt/setup.c deleted file mode 100644 index d2ffec1409a7..000000000000 --- a/arch/mips/paravirt/setup.c +++ /dev/null @@ -1,67 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2013 Cavium, Inc. - */ - -#include <linux/kernel.h> -#include <linux/kvm_para.h> - -#include <asm/reboot.h> -#include <asm/bootinfo.h> -#include <asm/smp-ops.h> -#include <asm/time.h> - -extern const struct plat_smp_ops paravirt_smp_ops; - -const char *get_system_type(void) -{ - return "MIPS Para-Virtualized Guest"; -} - -void __init plat_time_init(void) -{ - mips_hpt_frequency = kvm_hypercall0(KVM_HC_MIPS_GET_CLOCK_FREQ); - - preset_lpj = mips_hpt_frequency / (2 * HZ); -} - -static void pv_machine_halt(void) -{ - kvm_hypercall0(KVM_HC_MIPS_EXIT_VM); -} - -/* - * Early entry point for arch setup - */ -void __init prom_init(void) -{ - int i; - int argc = fw_arg0; - char **argv = (char **)fw_arg1; - -#ifdef CONFIG_32BIT - set_io_port_base(KSEG1ADDR(0x1e000000)); -#else /* CONFIG_64BIT */ - set_io_port_base(PHYS_TO_XKSEG_UNCACHED(0x1e000000)); -#endif - - for (i = 0; i < argc; i++) { - strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE); - if (i < argc - 1) - strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE); - } - _machine_halt = pv_machine_halt; - register_smp_ops(¶virt_smp_ops); -} - -void __init plat_mem_setup(void) -{ - /* Do nothing, the "mem=???" parser handles our memory. */ -} - -void __init prom_free_prom_memory(void) -{ -} diff --git a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile index 0f68d6849978..f3eecc065e5c 100644 --- a/arch/mips/pci/Makefile +++ b/arch/mips/pci/Makefile @@ -23,7 +23,6 @@ obj-$(CONFIG_MIPS_ALCHEMY) += pci-alchemy.o obj-$(CONFIG_PCI_AR2315) += pci-ar2315.o obj-$(CONFIG_SOC_AR71XX) += pci-ar71xx.o obj-$(CONFIG_PCI_AR724X) += pci-ar724x.o -obj-$(CONFIG_MIPS_PCI_VIRTIO) += pci-virtio-guest.o obj-$(CONFIG_PCI_XTALK_BRIDGE) += pci-xtalk-bridge.o # # These are still pretty much in the old state, watch, go blind. diff --git a/arch/mips/pci/pci-virtio-guest.c b/arch/mips/pci/pci-virtio-guest.c deleted file mode 100644 index 40a078bc4617..000000000000 --- a/arch/mips/pci/pci-virtio-guest.c +++ /dev/null @@ -1,131 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2013 Cavium, Inc. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/pci.h> - -#include <uapi/asm/bitfield.h> -#include <asm/byteorder.h> -#include <asm/io.h> - -#define PCI_CONFIG_ADDRESS 0xcf8 -#define PCI_CONFIG_DATA 0xcfc - -union pci_config_address { - struct { - __BITFIELD_FIELD(unsigned enable_bit : 1, /* 31 */ - __BITFIELD_FIELD(unsigned reserved : 7, /* 30 .. 24 */ - __BITFIELD_FIELD(unsigned bus_number : 8, /* 23 .. 16 */ - __BITFIELD_FIELD(unsigned devfn_number : 8, /* 15 .. 8 */ - __BITFIELD_FIELD(unsigned register_number : 8, /* 7 .. 0 */ - ))))); - }; - u32 w; -}; - -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} - -int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) -{ - return ((pin + slot) % 4)+ MIPS_IRQ_PCIA; -} - -static void pci_virtio_guest_write_config_addr(struct pci_bus *bus, - unsigned int devfn, int reg) -{ - union pci_config_address pca = { .w = 0 }; - - pca.register_number = reg; - pca.devfn_number = devfn; - pca.bus_number = bus->number; - pca.enable_bit = 1; - - outl(pca.w, PCI_CONFIG_ADDRESS); -} - -static int pci_virtio_guest_write_config(struct pci_bus *bus, - unsigned int devfn, int reg, int size, u32 val) -{ - pci_virtio_guest_write_config_addr(bus, devfn, reg); - - switch (size) { - case 1: - outb(val, PCI_CONFIG_DATA + (reg & 3)); - break; - case 2: - outw(val, PCI_CONFIG_DATA + (reg & 2)); - break; - case 4: - outl(val, PCI_CONFIG_DATA); - break; - } - - return PCIBIOS_SUCCESSFUL; -} - -static int pci_virtio_guest_read_config(struct pci_bus *bus, unsigned int devfn, - int reg, int size, u32 *val) -{ - pci_virtio_guest_write_config_addr(bus, devfn, reg); - - switch (size) { - case 1: - *val = inb(PCI_CONFIG_DATA + (reg & 3)); - break; - case 2: - *val = inw(PCI_CONFIG_DATA + (reg & 2)); - break; - case 4: - *val = inl(PCI_CONFIG_DATA); - break; - } - return PCIBIOS_SUCCESSFUL; -} - -static struct pci_ops pci_virtio_guest_ops = { - .read = pci_virtio_guest_read_config, - .write = pci_virtio_guest_write_config, -}; - -static struct resource pci_virtio_guest_mem_resource = { - .name = "Virtio MEM", - .flags = IORESOURCE_MEM, - .start = 0x10000000, - .end = 0x1dffffff -}; - -static struct resource pci_virtio_guest_io_resource = { - .name = "Virtio IO", - .flags = IORESOURCE_IO, - .start = 0, - .end = 0xffff -}; - -static struct pci_controller pci_virtio_guest_controller = { - .pci_ops = &pci_virtio_guest_ops, - .mem_resource = &pci_virtio_guest_mem_resource, - .io_resource = &pci_virtio_guest_io_resource, -}; - -static int __init pci_virtio_guest_setup(void) -{ - pr_err("pci_virtio_guest_setup\n"); - - /* Virtio comes pre-assigned */ - pci_set_flags(PCI_PROBE_ONLY); - - pci_virtio_guest_controller.io_map_base = mips_io_port_base; - register_pci_controller(&pci_virtio_guest_controller); - return 0; -} -arch_initcall(pci_virtio_guest_setup); |