diff options
Diffstat (limited to 'arch/s390/include/asm/pci_insn.h')
| -rw-r--r-- | arch/s390/include/asm/pci_insn.h | 203 |
1 files changed, 6 insertions, 197 deletions
diff --git a/arch/s390/include/asm/pci_insn.h b/arch/s390/include/asm/pci_insn.h index 1486a98d5dad..c6649e72cf40 100644 --- a/arch/s390/include/asm/pci_insn.h +++ b/arch/s390/include/asm/pci_insn.h @@ -1,10 +1,6 @@ #ifndef _ASM_S390_PCI_INSN_H #define _ASM_S390_PCI_INSN_H -#include <linux/delay.h> - -#define ZPCI_INSN_BUSY_DELAY 1 /* 1 microsecond */ - /* Load/Store status codes */ #define ZPCI_PCI_ST_FUNC_NOT_ENABLED 4 #define ZPCI_PCI_ST_FUNC_IN_ERR 8 @@ -82,199 +78,12 @@ struct zpci_fib { u64 reserved7; } __packed; -/* Modify PCI Function Controls */ -static inline u8 __mpcifc(u64 req, struct zpci_fib *fib, u8 *status) -{ - u8 cc; - - asm volatile ( - " .insn rxy,0xe300000000d0,%[req],%[fib]\n" - " ipm %[cc]\n" - " srl %[cc],28\n" - : [cc] "=d" (cc), [req] "+d" (req), [fib] "+Q" (*fib) - : : "cc"); - *status = req >> 24 & 0xff; - return cc; -} - -static inline int mpcifc_instr(u64 req, struct zpci_fib *fib) -{ - u8 cc, status; - - do { - cc = __mpcifc(req, fib, &status); - if (cc == 2) - msleep(ZPCI_INSN_BUSY_DELAY); - } while (cc == 2); - - if (cc) - printk_once(KERN_ERR "%s: error cc: %d status: %d\n", - __func__, cc, status); - return (cc) ? -EIO : 0; -} - -/* Refresh PCI Translations */ -static inline u8 __rpcit(u64 fn, u64 addr, u64 range, u8 *status) -{ - register u64 __addr asm("2") = addr; - register u64 __range asm("3") = range; - u8 cc; - - asm volatile ( - " .insn rre,0xb9d30000,%[fn],%[addr]\n" - " ipm %[cc]\n" - " srl %[cc],28\n" - : [cc] "=d" (cc), [fn] "+d" (fn) - : [addr] "d" (__addr), "d" (__range) - : "cc"); - *status = fn >> 24 & 0xff; - return cc; -} - -static inline int rpcit_instr(u64 fn, u64 addr, u64 range) -{ - u8 cc, status; - - do { - cc = __rpcit(fn, addr, range, &status); - if (cc == 2) - udelay(ZPCI_INSN_BUSY_DELAY); - } while (cc == 2); - - if (cc) - printk_once(KERN_ERR "%s: error cc: %d status: %d dma_addr: %Lx size: %Lx\n", - __func__, cc, status, addr, range); - return (cc) ? -EIO : 0; -} - -/* Store PCI function controls */ -static inline u8 __stpcifc(u32 handle, u8 space, struct zpci_fib *fib, u8 *status) -{ - u64 fn = (u64) handle << 32 | space << 16; - u8 cc; - - asm volatile ( - " .insn rxy,0xe300000000d4,%[fn],%[fib]\n" - " ipm %[cc]\n" - " srl %[cc],28\n" - : [cc] "=d" (cc), [fn] "+d" (fn), [fib] "=m" (*fib) - : : "cc"); - *status = fn >> 24 & 0xff; - return cc; -} - -/* Set Interruption Controls */ -static inline void sic_instr(u16 ctl, char *unused, u8 isc) -{ - asm volatile ( - " .insn rsy,0xeb00000000d1,%[ctl],%[isc],%[u]\n" - : : [ctl] "d" (ctl), [isc] "d" (isc << 27), [u] "Q" (*unused)); -} - -/* PCI Load */ -static inline u8 __pcilg(u64 *data, u64 req, u64 offset, u8 *status) -{ - register u64 __req asm("2") = req; - register u64 __offset asm("3") = offset; - u64 __data; - u8 cc; - - asm volatile ( - " .insn rre,0xb9d20000,%[data],%[req]\n" - " ipm %[cc]\n" - " srl %[cc],28\n" - : [cc] "=d" (cc), [data] "=d" (__data), [req] "+d" (__req) - : "d" (__offset) - : "cc"); - *status = __req >> 24 & 0xff; - *data = __data; - return cc; -} - -static inline int pcilg_instr(u64 *data, u64 req, u64 offset) -{ - u8 cc, status; - - do { - cc = __pcilg(data, req, offset, &status); - if (cc == 2) - udelay(ZPCI_INSN_BUSY_DELAY); - } while (cc == 2); - - if (cc) { - printk_once(KERN_ERR "%s: error cc: %d status: %d req: %Lx offset: %Lx\n", - __func__, cc, status, req, offset); - /* TODO: on IO errors set data to 0xff... - * here or in users of pcilg (le conversion)? - */ - } - return (cc) ? -EIO : 0; -} - -/* PCI Store */ -static inline u8 __pcistg(u64 data, u64 req, u64 offset, u8 *status) -{ - register u64 __req asm("2") = req; - register u64 __offset asm("3") = offset; - u8 cc; - - asm volatile ( - " .insn rre,0xb9d00000,%[data],%[req]\n" - " ipm %[cc]\n" - " srl %[cc],28\n" - : [cc] "=d" (cc), [req] "+d" (__req) - : "d" (__offset), [data] "d" (data) - : "cc"); - *status = __req >> 24 & 0xff; - return cc; -} - -static inline int pcistg_instr(u64 data, u64 req, u64 offset) -{ - u8 cc, status; - - do { - cc = __pcistg(data, req, offset, &status); - if (cc == 2) - udelay(ZPCI_INSN_BUSY_DELAY); - } while (cc == 2); - - if (cc) - printk_once(KERN_ERR "%s: error cc: %d status: %d req: %Lx offset: %Lx\n", - __func__, cc, status, req, offset); - return (cc) ? -EIO : 0; -} - -/* PCI Store Block */ -static inline u8 __pcistb(const u64 *data, u64 req, u64 offset, u8 *status) -{ - u8 cc; - - asm volatile ( - " .insn rsy,0xeb00000000d0,%[req],%[offset],%[data]\n" - " ipm %[cc]\n" - " srl %[cc],28\n" - : [cc] "=d" (cc), [req] "+d" (req) - : [offset] "d" (offset), [data] "Q" (*data) - : "cc"); - *status = req >> 24 & 0xff; - return cc; -} - -static inline int pcistb_instr(const u64 *data, u64 req, u64 offset) -{ - u8 cc, status; - - do { - cc = __pcistb(data, req, offset, &status); - if (cc == 2) - udelay(ZPCI_INSN_BUSY_DELAY); - } while (cc == 2); - if (cc) - printk_once(KERN_ERR "%s: error cc: %d status: %d req: %Lx offset: %Lx\n", - __func__, cc, status, req, offset); - return (cc) ? -EIO : 0; -} +int mpcifc_instr(u64 req, struct zpci_fib *fib); +int rpcit_instr(u64 fn, u64 addr, u64 range); +void sic_instr(u16 ctl, char *unused, u8 isc); +int pcilg_instr(u64 *data, u64 req, u64 offset); +int pcistg_instr(u64 data, u64 req, u64 offset); +int pcistb_instr(const u64 *data, u64 req, u64 offset); #endif |