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s390/pci: base support

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Add PCI support for s390, (only 64 bit mode is supported by hardware):
- PCI facility tests
- PCI instructions: pcilg, pcistg, pcistb, stpcifc, mpcifc, rpcit
- map readb/w/l/q and writeb/w/l/q to pcilg and pcistg instructions
- pci_iomap implementation
- memcpy_fromio/toio
- pci_root_ops using special pcilg/pcistg
- device, bus and domain allocation

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Jan Glauber
2012-11-29 12:50:30 +01:00
committed by Martin Schwidefsky
parent d07dc5d8ab
commit cd24834130
9 changed files with 1201 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
arch/s390/Kbuild
View File

@@ -6,3 +6,4 @@ obj-$(CONFIG_S390_HYPFS_FS) += hypfs/
obj-$(CONFIG_APPLDATA_BASE) += appldata/
obj-$(CONFIG_MATHEMU) += math-emu/
obj-y += net/
obj-$(CONFIG_PCI) += pci/

55
arch/s390/include/asm/io.h
View File

@@ -9,9 +9,9 @@
#ifndef _S390_IO_H
#define _S390_IO_H
#include <linux/kernel.h>
#include <asm/page.h>
#define IO_SPACE_LIMIT 0xffffffff
#include <asm/pci_io.h>
/*
* Change virtual addresses to physical addresses and vv.
@@ -24,10 +24,11 @@ static inline unsigned long virt_to_phys(volatile void * address)
" lra %0,0(%1)\n"
" jz 0f\n"
" la %0,0\n"
"0:"
"0:"
: "=a" (real_address) : "a" (address) : "cc");
return real_address;
return real_address;
}
#define virt_to_phys virt_to_phys
static inline void * phys_to_virt(unsigned long address)
{
@@ -42,4 +43,50 @@ void unxlate_dev_mem_ptr(unsigned long phys, void *addr);
*/
#define xlate_dev_kmem_ptr(p) p
#define IO_SPACE_LIMIT 0
#ifdef CONFIG_PCI
#define ioremap_nocache(addr, size) ioremap(addr, size)
#define ioremap_wc ioremap_nocache
/* TODO: s390 cannot support io_remap_pfn_range... */
#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
remap_pfn_range(vma, vaddr, pfn, size, prot)
static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
{
return (void __iomem *) offset;
}
static inline void iounmap(volatile void __iomem *addr)
{
}
/*
* s390 needs a private implementation of pci_iomap since ioremap with its
* offset parameter isn't sufficient. That's because BAR spaces are not
* disjunctive on s390 so we need the bar parameter of pci_iomap to find
* the corresponding device and create the mapping cookie.
*/
#define pci_iomap pci_iomap
#define pci_iounmap pci_iounmap
#define memcpy_fromio(dst, src, count) zpci_memcpy_fromio(dst, src, count)
#define memcpy_toio(dst, src, count) zpci_memcpy_toio(dst, src, count)
#define memset_io(dst, val, count) zpci_memset_io(dst, val, count)
#define __raw_readb zpci_read_u8
#define __raw_readw zpci_read_u16
#define __raw_readl zpci_read_u32
#define __raw_readq zpci_read_u64
#define __raw_writeb zpci_write_u8
#define __raw_writew zpci_write_u16
#define __raw_writel zpci_write_u32
#define __raw_writeq zpci_write_u64
#endif /* CONFIG_PCI */
#include <asm-generic/io.h>
#endif

82
arch/s390/include/asm/pci.h
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@@ -1,10 +1,84 @@
#ifndef __ASM_S390_PCI_H
#define __ASM_S390_PCI_H
/* S/390 systems don't have a PCI bus. This file is just here because some stupid .c code
* includes it even if CONFIG_PCI is not set.
*/
/* must be set before including asm-generic/pci.h */
#define PCI_DMA_BUS_IS_PHYS (0)
/* must be set before including pci_clp.h */
#define PCI_BAR_COUNT 6
#endif /* __ASM_S390_PCI_H */
#include <asm-generic/pci.h>
#include <asm-generic/pci-dma-compat.h>
#define PCIBIOS_MIN_IO 0x1000
#define PCIBIOS_MIN_MEM 0x10000000
#define pcibios_assign_all_busses() (0)
void __iomem *pci_iomap(struct pci_dev *, int, unsigned long);
void pci_iounmap(struct pci_dev *, void __iomem *);
int pci_domain_nr(struct pci_bus *);
int pci_proc_domain(struct pci_bus *);
#define ZPCI_BUS_NR 0 /* default bus number */
#define ZPCI_DEVFN 0 /* default device number */
/* PCI Function Controls */
#define ZPCI_FC_FN_ENABLED 0x80
#define ZPCI_FC_ERROR 0x40
#define ZPCI_FC_BLOCKED 0x20
#define ZPCI_FC_DMA_ENABLED 0x10
enum zpci_state {
ZPCI_FN_STATE_RESERVED,
ZPCI_FN_STATE_STANDBY,
ZPCI_FN_STATE_CONFIGURED,
ZPCI_FN_STATE_ONLINE,
NR_ZPCI_FN_STATES,
};
struct zpci_bar_struct {
u32 val; /* bar start & 3 flag bits */
u8 size; /* order 2 exponent */
u16 map_idx; /* index into bar mapping array */
};
/* Private data per function */
struct zpci_dev {
struct pci_dev *pdev;
struct pci_bus *bus;
struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */
enum zpci_state state;
u32 fid; /* function ID, used by sclp */
u32 fh; /* function handle, used by insn's */
u16 pchid; /* physical channel ID */
u8 pfgid; /* function group ID */
u16 domain;
struct zpci_bar_struct bars[PCI_BAR_COUNT];
enum pci_bus_speed max_bus_speed;
};
static inline bool zdev_enabled(struct zpci_dev *zdev)
{
return (zdev->fh & (1UL << 31)) ? true : false;
}
/* -----------------------------------------------------------------------------
Prototypes
----------------------------------------------------------------------------- */
/* Base stuff */
struct zpci_dev *zpci_alloc_device(void);
int zpci_create_device(struct zpci_dev *);
int zpci_enable_device(struct zpci_dev *);
void zpci_stop_device(struct zpci_dev *);
void zpci_free_device(struct zpci_dev *);
int zpci_scan_device(struct zpci_dev *);
/* Helpers */
struct zpci_dev *get_zdev(struct pci_dev *);
struct zpci_dev *get_zdev_by_fid(u32);
bool zpci_fid_present(u32);
#endif

280
arch/s390/include/asm/pci_insn.h Normal file
View File

@@ -0,0 +1,280 @@
#ifndef _ASM_S390_PCI_INSN_H
#define _ASM_S390_PCI_INSN_H
#include <linux/delay.h>
#define ZPCI_INSN_BUSY_DELAY 1 /* 1 millisecond */
/* Load/Store status codes */
#define ZPCI_PCI_ST_FUNC_NOT_ENABLED 4
#define ZPCI_PCI_ST_FUNC_IN_ERR 8
#define ZPCI_PCI_ST_BLOCKED 12
#define ZPCI_PCI_ST_INSUF_RES 16
#define ZPCI_PCI_ST_INVAL_AS 20
#define ZPCI_PCI_ST_FUNC_ALREADY_ENABLED 24
#define ZPCI_PCI_ST_DMA_AS_NOT_ENABLED 28
#define ZPCI_PCI_ST_2ND_OP_IN_INV_AS 36
#define ZPCI_PCI_ST_FUNC_NOT_AVAIL 40
#define ZPCI_PCI_ST_ALREADY_IN_RQ_STATE 44
/* Load/Store return codes */
#define ZPCI_PCI_LS_OK 0
#define ZPCI_PCI_LS_ERR 1
#define ZPCI_PCI_LS_BUSY 2
#define ZPCI_PCI_LS_INVAL_HANDLE 3
/* Load/Store address space identifiers */
#define ZPCI_PCIAS_MEMIO_0 0
#define ZPCI_PCIAS_MEMIO_1 1
#define ZPCI_PCIAS_MEMIO_2 2
#define ZPCI_PCIAS_MEMIO_3 3
#define ZPCI_PCIAS_MEMIO_4 4
#define ZPCI_PCIAS_MEMIO_5 5
#define ZPCI_PCIAS_CFGSPC 15
/* Modify PCI Function Controls */
#define ZPCI_MOD_FC_REG_INT 2
#define ZPCI_MOD_FC_DEREG_INT 3
#define ZPCI_MOD_FC_REG_IOAT 4
#define ZPCI_MOD_FC_DEREG_IOAT 5
#define ZPCI_MOD_FC_REREG_IOAT 6
#define ZPCI_MOD_FC_RESET_ERROR 7
#define ZPCI_MOD_FC_RESET_BLOCK 9
#define ZPCI_MOD_FC_SET_MEASURE 10
/* FIB function controls */
#define ZPCI_FIB_FC_ENABLED 0x80
#define ZPCI_FIB_FC_ERROR 0x40
#define ZPCI_FIB_FC_LS_BLOCKED 0x20
#define ZPCI_FIB_FC_DMAAS_REG 0x10
/* FIB function controls */
#define ZPCI_FIB_FC_ENABLED 0x80
#define ZPCI_FIB_FC_ERROR 0x40
#define ZPCI_FIB_FC_LS_BLOCKED 0x20
#define ZPCI_FIB_FC_DMAAS_REG 0x10
/* Function Information Block */
struct zpci_fib {
u32 fmt : 8; /* format */
u32 : 24;
u32 reserved1;
u8 fc; /* function controls */
u8 reserved2;
u16 reserved3;
u32 reserved4;
u64 pba; /* PCI base address */
u64 pal; /* PCI address limit */
u64 iota; /* I/O Translation Anchor */
u32 : 1;
u32 isc : 3; /* Interrupt subclass */
u32 noi : 12; /* Number of interrupts */
u32 : 2;
u32 aibvo : 6; /* Adapter interrupt bit vector offset */
u32 sum : 1; /* Adapter int summary bit enabled */
u32 : 1;
u32 aisbo : 6; /* Adapter int summary bit offset */
u32 reserved5;
u64 aibv; /* Adapter int bit vector address */
u64 aisb; /* Adapter int summary bit address */
u64 fmb_addr; /* Function measurement block address and key */
u64 reserved6;
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)
msleep(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)
msleep(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)
msleep(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)
msleep(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;
}
#endif

194
arch/s390/include/asm/pci_io.h Normal file
View File

@@ -0,0 +1,194 @@
#ifndef _ASM_S390_PCI_IO_H
#define _ASM_S390_PCI_IO_H
#ifdef CONFIG_PCI
#include <linux/kernel.h>
#include <linux/slab.h>
#include <asm/pci_insn.h>
/* I/O Map */
#define ZPCI_IOMAP_MAX_ENTRIES 0x7fff
#define ZPCI_IOMAP_ADDR_BASE 0x8000000000000000ULL
#define ZPCI_IOMAP_ADDR_IDX_MASK 0x7fff000000000000ULL
#define ZPCI_IOMAP_ADDR_OFF_MASK 0x0000ffffffffffffULL
struct zpci_iomap_entry {
u32 fh;
u8 bar;
};
extern struct zpci_iomap_entry *zpci_iomap_start;
#define ZPCI_IDX(addr) \
(((__force u64) addr & ZPCI_IOMAP_ADDR_IDX_MASK) >> 48)
#define ZPCI_OFFSET(addr) \
((__force u64) addr & ZPCI_IOMAP_ADDR_OFF_MASK)
#define ZPCI_CREATE_REQ(handle, space, len) \
((u64) handle << 32 | space << 16 | len)
#define zpci_read(LENGTH, RETTYPE) \
static inline RETTYPE zpci_read_##RETTYPE(const volatile void __iomem *addr) \
{ \
struct zpci_iomap_entry *entry = &zpci_iomap_start[ZPCI_IDX(addr)]; \
u64 req = ZPCI_CREATE_REQ(entry->fh, entry->bar, LENGTH); \
u64 data; \
int rc; \
\
rc = pcilg_instr(&data, req, ZPCI_OFFSET(addr)); \
if (rc) \
data = -1ULL; \
return (RETTYPE) data; \
}
#define zpci_write(LENGTH, VALTYPE) \
static inline void zpci_write_##VALTYPE(VALTYPE val, \
const volatile void __iomem *addr) \
{ \
struct zpci_iomap_entry *entry = &zpci_iomap_start[ZPCI_IDX(addr)]; \
u64 req = ZPCI_CREATE_REQ(entry->fh, entry->bar, LENGTH); \
u64 data = (VALTYPE) val; \
\
pcistg_instr(data, req, ZPCI_OFFSET(addr)); \
}
zpci_read(8, u64)
zpci_read(4, u32)
zpci_read(2, u16)
zpci_read(1, u8)
zpci_write(8, u64)
zpci_write(4, u32)
zpci_write(2, u16)
zpci_write(1, u8)
static inline int zpci_write_single(u64 req, const u64 *data, u64 offset, u8 len)
{
u64 val;
switch (len) {
case 1:
val = (u64) *((u8 *) data);
break;
case 2:
val = (u64) *((u16 *) data);
break;
case 4:
val = (u64) *((u32 *) data);
break;
case 8:
val = (u64) *((u64 *) data);
break;
default:
val = 0; /* let FW report error */
break;
}
return pcistg_instr(val, req, offset);
}
static inline int zpci_read_single(u64 req, u64 *dst, u64 offset, u8 len)
{
u64 data;
u8 cc;
cc = pcilg_instr(&data, req, offset);
switch (len) {
case 1:
*((u8 *) dst) = (u8) data;
break;
case 2:
*((u16 *) dst) = (u16) data;
break;
case 4:
*((u32 *) dst) = (u32) data;
break;
case 8:
*((u64 *) dst) = (u64) data;
break;
}
return cc;
}
static inline int zpci_write_block(u64 req, const u64 *data, u64 offset)
{
return pcistb_instr(data, req, offset);
}
static inline u8 zpci_get_max_write_size(u64 src, u64 dst, int len, int max)
{
int count = len > max ? max : len, size = 1;
while (!(src & 0x1) && !(dst & 0x1) && ((size << 1) <= count)) {
dst = dst >> 1;
src = src >> 1;
size = size << 1;
}
return size;
}
static inline int zpci_memcpy_fromio(void *dst,
const volatile void __iomem *src,
unsigned long n)
{
struct zpci_iomap_entry *entry = &zpci_iomap_start[ZPCI_IDX(src)];
u64 req, offset = ZPCI_OFFSET(src);
int size, rc = 0;
while (n > 0) {
size = zpci_get_max_write_size((u64) src, (u64) dst, n, 8);
req = ZPCI_CREATE_REQ(entry->fh, entry->bar, size);
rc = zpci_read_single(req, dst, offset, size);
if (rc)
break;
offset += size;
dst += size;
n -= size;
}
return rc;
}
static inline int zpci_memcpy_toio(volatile void __iomem *dst,
const void *src, unsigned long n)
{
struct zpci_iomap_entry *entry = &zpci_iomap_start[ZPCI_IDX(dst)];
u64 req, offset = ZPCI_OFFSET(dst);
int size, rc = 0;
if (!src)
return -EINVAL;
while (n > 0) {
size = zpci_get_max_write_size((u64) dst, (u64) src, n, 128);
req = ZPCI_CREATE_REQ(entry->fh, entry->bar, size);
if (size > 8) /* main path */
rc = zpci_write_block(req, src, offset);
else
rc = zpci_write_single(req, src, offset, size);
if (rc)
break;
offset += size;
src += size;
n -= size;
}
return rc;
}
static inline int zpci_memset_io(volatile void __iomem *dst,
unsigned char val, size_t count)
{
u8 *src = kmalloc(count, GFP_KERNEL);
int rc;
if (src == NULL)
return -ENOMEM;
memset(src, val, count);
rc = zpci_memcpy_toio(dst, src, count);
kfree(src);
return rc;
}
#endif /* CONFIG_PCI */
#endif /* _ASM_S390_PCI_IO_H */

15
arch/s390/kernel/dis.c
View File

@@ -399,6 +399,10 @@ enum {
LONG_INSN_TABORT,
LONG_INSN_TBEGIN,
LONG_INSN_TBEGINC,
LONG_INSN_PCISTG,
LONG_INSN_MPCIFC,
LONG_INSN_STPCIFC,
LONG_INSN_PCISTB,
};
static char *long_insn_name[] = {
@@ -469,6 +473,10 @@ static char *long_insn_name[] = {
[LONG_INSN_TABORT] = "tabort",
[LONG_INSN_TBEGIN] = "tbegin",
[LONG_INSN_TBEGINC] = "tbeginc",
[LONG_INSN_PCISTG] = "pcistg",
[LONG_INSN_MPCIFC] = "mpcifc",
[LONG_INSN_STPCIFC] = "stpcifc",
[LONG_INSN_PCISTB] = "pcistb",
};
static struct insn opcode[] = {
@@ -1115,6 +1123,9 @@ static struct insn opcode_b9[] = {
{ { 0, LONG_INSN_SLHHHR }, 0xcb, INSTR_RRF_R0RR2 },
{ "chhr", 0xcd, INSTR_RRE_RR },
{ "clhhr", 0xcf, INSTR_RRE_RR },
{ { 0, LONG_INSN_PCISTG }, 0xd0, INSTR_RRE_RR },
{ "pcilg", 0xd2, INSTR_RRE_RR },
{ "rpcit", 0xd3, INSTR_RRE_RR },
{ "ahhlr", 0xd8, INSTR_RRF_R0RR2 },
{ "shhlr", 0xd9, INSTR_RRF_R0RR2 },
{ { 0, LONG_INSN_ALHHLR }, 0xda, INSTR_RRF_R0RR2 },
@@ -1346,6 +1357,8 @@ static struct insn opcode_e3[] = {
{ "stfh", 0xcb, INSTR_RXY_RRRD },
{ "chf", 0xcd, INSTR_RXY_RRRD },
{ "clhf", 0xcf, INSTR_RXY_RRRD },
{ { 0, LONG_INSN_MPCIFC }, 0xd0, INSTR_RXY_RRRD },
{ { 0, LONG_INSN_STPCIFC }, 0xd4, INSTR_RXY_RRRD },
#endif
{ "lrv", 0x1e, INSTR_RXY_RRRD },
{ "lrvh", 0x1f, INSTR_RXY_RRRD },
@@ -1423,6 +1436,8 @@ static struct insn opcode_eb[] = {
{ "lmy", 0x98, INSTR_RSY_RRRD },
{ "lamy", 0x9a, INSTR_RSY_AARD },
{ "stamy", 0x9b, INSTR_RSY_AARD },
{ { 0, LONG_INSN_PCISTB }, 0xd0, INSTR_RSY_RRRD },
{ "sic", 0xd1, INSTR_RSY_RRRD },
{ "srak", 0xdc, INSTR_RSY_RRRD },
{ "slak", 0xdd, INSTR_RSY_RRRD },
{ "srlk", 0xde, INSTR_RSY_RRRD },

5
arch/s390/pci/Makefile Normal file
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@@ -0,0 +1,5 @@
#
# Makefile for the s390 PCI subsystem.
#
obj-$(CONFIG_PCI) += pci.o

557
arch/s390/pci/pci.c Normal file
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File diff suppressed because it is too large Load Diff

21
include/asm-generic/io.h
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@@ -83,19 +83,25 @@ static inline void __raw_writel(u32 b, volatile void __iomem *addr)
#define writel(b,addr) __raw_writel(__cpu_to_le32(b),addr)
#ifdef CONFIG_64BIT
#ifndef __raw_readq
static inline u64 __raw_readq(const volatile void __iomem *addr)
{
return *(const volatile u64 __force *) addr;
}
#endif
#define readq(addr) __le64_to_cpu(__raw_readq(addr))
#ifndef __raw_writeq
static inline void __raw_writeq(u64 b, volatile void __iomem *addr)
{
*(volatile u64 __force *) addr = b;
}
#define writeq(b,addr) __raw_writeq(__cpu_to_le64(b),addr)
#endif
#define writeq(b, addr) __raw_writeq(__cpu_to_le64(b), addr)
#endif /* CONFIG_64BIT */
#ifndef PCI_IOBASE
#define PCI_IOBASE ((void __iomem *) 0)
#endif
@@ -286,15 +292,20 @@ static inline void writesb(const void __iomem *addr, const void *buf, int len)
#ifndef CONFIG_GENERIC_IOMAP
struct pci_dev;
extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
#ifndef pci_iounmap
static inline void pci_iounmap(struct pci_dev *dev, void __iomem *p)
{
}
#endif
#endif /* CONFIG_GENERIC_IOMAP */
/*
* Change virtual addresses to physical addresses and vv.
* These are pretty trivial
*/
#ifndef virt_to_phys
static inline unsigned long virt_to_phys(volatile void *address)
{
return __pa((unsigned long)address);
@@ -304,6 +315,7 @@ static inline void *phys_to_virt(unsigned long address)
{
return __va(address);
}
#endif
/*
* Change "struct page" to physical address.
@@ -363,9 +375,16 @@ static inline void *bus_to_virt(unsigned long address)
}
#endif
#ifndef memset_io
#define memset_io(a, b, c) memset(__io_virt(a), (b), (c))
#endif
#ifndef memcpy_fromio
#define memcpy_fromio(a, b, c) memcpy((a), __io_virt(b), (c))
#endif
#ifndef memcpy_toio
#define memcpy_toio(a, b, c) memcpy(__io_virt(a), (b), (c))
#endif
#endif /* __KERNEL__ */