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s390: hypfs: Move diag implementation and data definitions 

Diag 204 data and function definitions currently live in the hypfs
files. As KVM will be a consumer of this data, we need to make it
publicly available and move it to the appropriate diag.{c,h} files.

__attribute__ ((packed)) occurences were replaced with __packed for
all moved structs.

Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
hifive-unleashed-5.1
Janosch Frank 2016-02-04 10:24:52 +01:00 committed by Christian Borntraeger
parent dca4d72877
commit e65f30e0cb
3 changed files with 256 additions and 254 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

361
arch/s390/hypfs/hypfs_diag.c
View File

@ -19,29 +19,10 @@
#include <asm/ebcdic.h>
#include "hypfs.h"
#define LPAR_NAME_LEN 8 /* lpar name len in diag 204 data */
#define CPU_NAME_LEN 16 /* type name len of cpus in diag224 name table */
#define TMP_SIZE 64 /* size of temporary buffers */
#define DBFS_D204_HDR_VERSION 0
/* diag 204 subcodes */
enum diag204_sc {
SUBC_STIB4 = 4,
SUBC_RSI = 5,
SUBC_STIB6 = 6,
SUBC_STIB7 = 7
};
/* The two available diag 204 data formats */
enum diag204_format {
INFO_SIMPLE = 0,
INFO_EXT = 0x00010000
};
/* bit is set in flags, when physical cpu info is included in diag 204 data */
#define LPAR_PHYS_FLG 0x80
static char *diag224_cpu_names; /* diag 224 name table */
static enum diag204_sc diag204_store_sc; /* used subcode for store */
static enum diag204_format diag204_info_type; /* used diag 204 data format */
@ -53,7 +34,7 @@ static int diag204_buf_pages; /* number of pages for diag204 data */
static struct dentry *dbfs_d204_file;
/*
* DIAG 204 data structures and member access functions.
* DIAG 204 member access functions.
*
* Since we have two different diag 204 data formats for old and new s390
* machines, we do not access the structs directly, but use getter functions for
@ -62,302 +43,173 @@ static struct dentry *dbfs_d204_file;
/* Time information block */
struct info_blk_hdr {
__u8 npar;
__u8 flags;
__u16 tslice;
__u16 phys_cpus;
__u16 this_part;
__u64 curtod;
} __attribute__ ((packed));
struct x_info_blk_hdr {
__u8 npar;
__u8 flags;
__u16 tslice;
__u16 phys_cpus;
__u16 this_part;
__u64 curtod1;
__u64 curtod2;
char reserved[40];
} __attribute__ ((packed));
static inline int info_blk_hdr__size(enum diag204_format type)
{
if (type == INFO_SIMPLE)
return sizeof(struct info_blk_hdr);
else /* INFO_EXT */
return sizeof(struct x_info_blk_hdr);
if (type == DIAG204_INFO_SIMPLE)
return sizeof(struct diag204_info_blk_hdr);
else /* DIAG204_INFO_EXT */
return sizeof(struct diag204_x_info_blk_hdr);
}
static inline __u8 info_blk_hdr__npar(enum diag204_format type, void *hdr)
{
if (type == INFO_SIMPLE)
return ((struct info_blk_hdr *)hdr)->npar;
else /* INFO_EXT */
return ((struct x_info_blk_hdr *)hdr)->npar;
if (type == DIAG204_INFO_SIMPLE)
return ((struct diag204_info_blk_hdr *)hdr)->npar;
else /* DIAG204_INFO_EXT */
return ((struct diag204_x_info_blk_hdr *)hdr)->npar;
}
static inline __u8 info_blk_hdr__flags(enum diag204_format type, void *hdr)
{
if (type == INFO_SIMPLE)
return ((struct info_blk_hdr *)hdr)->flags;
else /* INFO_EXT */
return ((struct x_info_blk_hdr *)hdr)->flags;
if (type == DIAG204_INFO_SIMPLE)
return ((struct diag204_info_blk_hdr *)hdr)->flags;
else /* DIAG204_INFO_EXT */
return ((struct diag204_x_info_blk_hdr *)hdr)->flags;
}
static inline __u16 info_blk_hdr__pcpus(enum diag204_format type, void *hdr)
{
if (type == INFO_SIMPLE)
return ((struct info_blk_hdr *)hdr)->phys_cpus;
else /* INFO_EXT */
return ((struct x_info_blk_hdr *)hdr)->phys_cpus;
if (type == DIAG204_INFO_SIMPLE)
return ((struct diag204_info_blk_hdr *)hdr)->phys_cpus;
else /* DIAG204_INFO_EXT */
return ((struct diag204_x_info_blk_hdr *)hdr)->phys_cpus;
}
/* Partition header */
struct part_hdr {
__u8 pn;
__u8 cpus;
char reserved[6];
char part_name[LPAR_NAME_LEN];
} __attribute__ ((packed));
struct x_part_hdr {
__u8 pn;
__u8 cpus;
__u8 rcpus;
__u8 pflag;
__u32 mlu;
char part_name[LPAR_NAME_LEN];
char lpc_name[8];
char os_name[8];
__u64 online_cs;
__u64 online_es;
__u8 upid;
char reserved1[3];
__u32 group_mlu;
char group_name[8];
char reserved2[32];
} __attribute__ ((packed));
static inline int part_hdr__size(enum diag204_format type)
{
if (type == INFO_SIMPLE)
return sizeof(struct part_hdr);
else /* INFO_EXT */
return sizeof(struct x_part_hdr);
if (type == DIAG204_INFO_SIMPLE)
return sizeof(struct diag204_part_hdr);
else /* DIAG204_INFO_EXT */
return sizeof(struct diag204_x_part_hdr);
}
static inline __u8 part_hdr__rcpus(enum diag204_format type, void *hdr)
{
if (type == INFO_SIMPLE)
return ((struct part_hdr *)hdr)->cpus;
else /* INFO_EXT */
return ((struct x_part_hdr *)hdr)->rcpus;
if (type == DIAG204_INFO_SIMPLE)
return ((struct diag204_part_hdr *)hdr)->cpus;
else /* DIAG204_INFO_EXT */
return ((struct diag204_x_part_hdr *)hdr)->rcpus;
}
static inline void part_hdr__part_name(enum diag204_format type, void *hdr,
char *name)
{
if (type == INFO_SIMPLE)
memcpy(name, ((struct part_hdr *)hdr)->part_name,
LPAR_NAME_LEN);
else /* INFO_EXT */
memcpy(name, ((struct x_part_hdr *)hdr)->part_name,
LPAR_NAME_LEN);
EBCASC(name, LPAR_NAME_LEN);
name[LPAR_NAME_LEN] = 0;
if (type == DIAG204_INFO_SIMPLE)
memcpy(name, ((struct diag204_part_hdr *)hdr)->part_name,
DIAG204_LPAR_NAME_LEN);
else /* DIAG204_INFO_EXT */
memcpy(name, ((struct diag204_x_part_hdr *)hdr)->part_name,
DIAG204_LPAR_NAME_LEN);
EBCASC(name, DIAG204_LPAR_NAME_LEN);
name[DIAG204_LPAR_NAME_LEN] = 0;
strim(name);
}
struct cpu_info {
__u16 cpu_addr;
char reserved1[2];
__u8 ctidx;
__u8 cflag;
__u16 weight;
__u64 acc_time;
__u64 lp_time;
} __attribute__ ((packed));
struct x_cpu_info {
__u16 cpu_addr;
char reserved1[2];
__u8 ctidx;
__u8 cflag;
__u16 weight;
__u64 acc_time;
__u64 lp_time;
__u16 min_weight;
__u16 cur_weight;
__u16 max_weight;
char reseved2[2];
__u64 online_time;
__u64 wait_time;
__u32 pma_weight;
__u32 polar_weight;
char reserved3[40];
} __attribute__ ((packed));
/* CPU info block */
static inline int cpu_info__size(enum diag204_format type)
{
if (type == INFO_SIMPLE)
return sizeof(struct cpu_info);
else /* INFO_EXT */
return sizeof(struct x_cpu_info);
if (type == DIAG204_INFO_SIMPLE)
return sizeof(struct diag204_cpu_info);
else /* DIAG204_INFO_EXT */
return sizeof(struct diag204_x_cpu_info);
}
static inline __u8 cpu_info__ctidx(enum diag204_format type, void *hdr)
{
if (type == INFO_SIMPLE)
return ((struct cpu_info *)hdr)->ctidx;
else /* INFO_EXT */
return ((struct x_cpu_info *)hdr)->ctidx;
if (type == DIAG204_INFO_SIMPLE)
return ((struct diag204_cpu_info *)hdr)->ctidx;
else /* DIAG204_INFO_EXT */
return ((struct diag204_x_cpu_info *)hdr)->ctidx;
}
static inline __u16 cpu_info__cpu_addr(enum diag204_format type, void *hdr)
{
if (type == INFO_SIMPLE)
return ((struct cpu_info *)hdr)->cpu_addr;
else /* INFO_EXT */
return ((struct x_cpu_info *)hdr)->cpu_addr;
if (type == DIAG204_INFO_SIMPLE)
return ((struct diag204_cpu_info *)hdr)->cpu_addr;
else /* DIAG204_INFO_EXT */
return ((struct diag204_x_cpu_info *)hdr)->cpu_addr;
}
static inline __u64 cpu_info__acc_time(enum diag204_format type, void *hdr)
{
if (type == INFO_SIMPLE)
return ((struct cpu_info *)hdr)->acc_time;
else /* INFO_EXT */
return ((struct x_cpu_info *)hdr)->acc_time;
if (type == DIAG204_INFO_SIMPLE)
return ((struct diag204_cpu_info *)hdr)->acc_time;
else /* DIAG204_INFO_EXT */
return ((struct diag204_x_cpu_info *)hdr)->acc_time;
}
static inline __u64 cpu_info__lp_time(enum diag204_format type, void *hdr)
{
if (type == INFO_SIMPLE)
return ((struct cpu_info *)hdr)->lp_time;
else /* INFO_EXT */
return ((struct x_cpu_info *)hdr)->lp_time;
if (type == DIAG204_INFO_SIMPLE)
return ((struct diag204_cpu_info *)hdr)->lp_time;
else /* DIAG204_INFO_EXT */
return ((struct diag204_x_cpu_info *)hdr)->lp_time;
}
static inline __u64 cpu_info__online_time(enum diag204_format type, void *hdr)
{
if (type == INFO_SIMPLE)
if (type == DIAG204_INFO_SIMPLE)
return 0; /* online_time not available in simple info */
else /* INFO_EXT */
return ((struct x_cpu_info *)hdr)->online_time;
else /* DIAG204_INFO_EXT */
return ((struct diag204_x_cpu_info *)hdr)->online_time;
}
/* Physical header */
struct phys_hdr {
char reserved1[1];
__u8 cpus;
char reserved2[6];
char mgm_name[8];
} __attribute__ ((packed));
struct x_phys_hdr {
char reserved1[1];
__u8 cpus;
char reserved2[6];
char mgm_name[8];
char reserved3[80];
} __attribute__ ((packed));
static inline int phys_hdr__size(enum diag204_format type)
{
if (type == INFO_SIMPLE)
return sizeof(struct phys_hdr);
else /* INFO_EXT */
return sizeof(struct x_phys_hdr);
if (type == DIAG204_INFO_SIMPLE)
return sizeof(struct diag204_phys_hdr);
else /* DIAG204_INFO_EXT */
return sizeof(struct diag204_x_phys_hdr);
}
static inline __u8 phys_hdr__cpus(enum diag204_format type, void *hdr)
{
if (type == INFO_SIMPLE)
return ((struct phys_hdr *)hdr)->cpus;
else /* INFO_EXT */
return ((struct x_phys_hdr *)hdr)->cpus;
if (type == DIAG204_INFO_SIMPLE)
return ((struct diag204_phys_hdr *)hdr)->cpus;
else /* DIAG204_INFO_EXT */
return ((struct diag204_x_phys_hdr *)hdr)->cpus;
}
/* Physical CPU info block */
struct phys_cpu {
__u16 cpu_addr;
char reserved1[2];
__u8 ctidx;
char reserved2[3];
__u64 mgm_time;
char reserved3[8];
} __attribute__ ((packed));
struct x_phys_cpu {
__u16 cpu_addr;
char reserved1[2];
__u8 ctidx;
char reserved2[3];
__u64 mgm_time;
char reserved3[80];
} __attribute__ ((packed));
static inline int phys_cpu__size(enum diag204_format type)
{
if (type == INFO_SIMPLE)
return sizeof(struct phys_cpu);
else /* INFO_EXT */
return sizeof(struct x_phys_cpu);
if (type == DIAG204_INFO_SIMPLE)
return sizeof(struct diag204_phys_cpu);
else /* DIAG204_INFO_EXT */
return sizeof(struct diag204_x_phys_cpu);
}
static inline __u16 phys_cpu__cpu_addr(enum diag204_format type, void *hdr)
{
if (type == INFO_SIMPLE)
return ((struct phys_cpu *)hdr)->cpu_addr;
else /* INFO_EXT */
return ((struct x_phys_cpu *)hdr)->cpu_addr;
if (type == DIAG204_INFO_SIMPLE)
return ((struct diag204_phys_cpu *)hdr)->cpu_addr;
else /* DIAG204_INFO_EXT */
return ((struct diag204_x_phys_cpu *)hdr)->cpu_addr;
}
static inline __u64 phys_cpu__mgm_time(enum diag204_format type, void *hdr)
{
if (type == INFO_SIMPLE)
return ((struct phys_cpu *)hdr)->mgm_time;
else /* INFO_EXT */
return ((struct x_phys_cpu *)hdr)->mgm_time;
if (type == DIAG204_INFO_SIMPLE)
return ((struct diag204_phys_cpu *)hdr)->mgm_time;
else /* DIAG204_INFO_EXT */
return ((struct diag204_x_phys_cpu *)hdr)->mgm_time;
}
static inline __u64 phys_cpu__ctidx(enum diag204_format type, void *hdr)
{
if (type == INFO_SIMPLE)
return ((struct phys_cpu *)hdr)->ctidx;
else /* INFO_EXT */
return ((struct x_phys_cpu *)hdr)->ctidx;
if (type == DIAG204_INFO_SIMPLE)
return ((struct diag204_phys_cpu *)hdr)->ctidx;
else /* DIAG204_INFO_EXT */
return ((struct diag204_x_phys_cpu *)hdr)->ctidx;
}
/* Diagnose 204 functions */
static inline int __diag204(unsigned long subcode, unsigned long size, void *addr)
{
register unsigned long _subcode asm("0") = subcode;
register unsigned long _size asm("1") = size;
asm volatile(
" diag %2,%0,0x204\n"
"0:\n"
EX_TABLE(0b,0b)
: "+d" (_subcode), "+d" (_size) : "d" (addr) : "memory");
if (_subcode)
return -1;
return _size;
}
static int diag204(unsigned long subcode, unsigned long size, void *addr)
{
diag_stat_inc(DIAG_STAT_X204);
return __diag204(subcode, size, addr);
}
/*
* For the old diag subcode 4 with simple data format we have to use real
* memory. If we use subcode 6 or 7 with extended data format, we can (and
@ -409,12 +261,12 @@ static void *diag204_get_buffer(enum diag204_format fmt, int *pages)
*pages = diag204_buf_pages;
return diag204_buf;
}
if (fmt == INFO_SIMPLE) {
if (fmt == DIAG204_INFO_SIMPLE) {
*pages = 1;
return diag204_alloc_rbuf();
} else {/* INFO_EXT */
*pages = diag204((unsigned long)SUBC_RSI |
(unsigned long)INFO_EXT, 0, NULL);
} else {/* DIAG204_INFO_EXT */
*pages = diag204((unsigned long)DIAG204_SUBC_RSI |
(unsigned long)DIAG204_INFO_EXT, 0, NULL);
if (*pages <= 0)
return ERR_PTR(-ENOSYS);
else
@ -441,18 +293,18 @@ static int diag204_probe(void)
void *buf;
int pages, rc;
buf = diag204_get_buffer(INFO_EXT, &pages);
buf = diag204_get_buffer(DIAG204_INFO_EXT, &pages);
if (!IS_ERR(buf)) {
if (diag204((unsigned long)SUBC_STIB7 |
(unsigned long)INFO_EXT, pages, buf) >= 0) {
diag204_store_sc = SUBC_STIB7;
diag204_info_type = INFO_EXT;
if (diag204((unsigned long)DIAG204_SUBC_STIB7 |
(unsigned long)DIAG204_INFO_EXT, pages, buf) >= 0) {
diag204_store_sc = DIAG204_SUBC_STIB7;
diag204_info_type = DIAG204_INFO_EXT;
goto out;
}
if (diag204((unsigned long)SUBC_STIB6 |
(unsigned long)INFO_EXT, pages, buf) >= 0) {
diag204_store_sc = SUBC_STIB6;
diag204_info_type = INFO_EXT;
if (diag204((unsigned long)DIAG204_SUBC_STIB6 |
(unsigned long)DIAG204_INFO_EXT, pages, buf) >= 0) {
diag204_store_sc = DIAG204_SUBC_STIB6;
diag204_info_type = DIAG204_INFO_EXT;
goto out;
}
diag204_free_buffer();
@ -460,15 +312,15 @@ static int diag204_probe(void)
/* subcodes 6 and 7 failed, now try subcode 4 */
buf = diag204_get_buffer(INFO_SIMPLE, &pages);
buf = diag204_get_buffer(DIAG204_INFO_SIMPLE, &pages);
if (IS_ERR(buf)) {
rc = PTR_ERR(buf);
goto fail_alloc;
}
if (diag204((unsigned long)SUBC_STIB4 |
(unsigned long)INFO_SIMPLE, pages, buf) >= 0) {
diag204_store_sc = SUBC_STIB4;
diag204_info_type = INFO_SIMPLE;
if (diag204((unsigned long)DIAG204_SUBC_STIB4 |
(unsigned long)DIAG204_INFO_SIMPLE, pages, buf) >= 0) {
diag204_store_sc = DIAG204_SUBC_STIB4;
diag204_info_type = DIAG204_INFO_SIMPLE;
goto out;
} else {
rc = -ENOSYS;
@ -543,9 +395,9 @@ static void diag224_delete_name_table(void)
static int diag224_idx2name(int index, char *name)
{
memcpy(name, diag224_cpu_names + ((index + 1) * CPU_NAME_LEN),
CPU_NAME_LEN);
name[CPU_NAME_LEN] = 0;
memcpy(name, diag224_cpu_names + ((index + 1) * DIAG204_CPU_NAME_LEN),
DIAG204_CPU_NAME_LEN);
name[DIAG204_CPU_NAME_LEN] = 0;
strim(name);
return 0;
}
@ -601,7 +453,7 @@ __init int hypfs_diag_init(void)
pr_err("The hardware system does not support hypfs\n");
return -ENODATA;
}
if (diag204_info_type == INFO_EXT) {
if (diag204_info_type == DIAG204_INFO_EXT) {
rc = hypfs_dbfs_create_file(&dbfs_file_d204);
if (rc)
return rc;
@ -649,7 +501,7 @@ static int hypfs_create_cpu_files(struct dentry *cpus_dir, void *cpu_info)
cpu_info__lp_time(diag204_info_type, cpu_info));
if (IS_ERR(rc))
return PTR_ERR(rc);
if (diag204_info_type == INFO_EXT) {
if (diag204_info_type == DIAG204_INFO_EXT) {
rc = hypfs_create_u64(cpu_dir, "onlinetime",
cpu_info__online_time(diag204_info_type,
cpu_info));
@ -665,12 +517,12 @@ static void *hypfs_create_lpar_files(struct dentry *systems_dir, void *part_hdr)
{
struct dentry *cpus_dir;
struct dentry *lpar_dir;
char lpar_name[LPAR_NAME_LEN + 1];
char lpar_name[DIAG204_LPAR_NAME_LEN + 1];
void *cpu_info;
int i;
part_hdr__part_name(diag204_info_type, part_hdr, lpar_name);
lpar_name[LPAR_NAME_LEN] = 0;
lpar_name[DIAG204_LPAR_NAME_LEN] = 0;
lpar_dir = hypfs_mkdir(systems_dir, lpar_name);
if (IS_ERR(lpar_dir))
return lpar_dir;
@ -753,7 +605,8 @@ int hypfs_diag_create_files(struct dentry *root)
goto err_out;
}
}
if (info_blk_hdr__flags(diag204_info_type, time_hdr) & LPAR_PHYS_FLG) {
if (info_blk_hdr__flags(diag204_info_type, time_hdr) &
DIAG204_LPAR_PHYS_FLG) {
ptr = hypfs_create_phys_files(root, part_hdr);
if (IS_ERR(ptr)) {
rc = PTR_ERR(ptr);

127
arch/s390/include/asm/diag.h
View File

@ -78,4 +78,131 @@ struct diag210 {
extern int diag210(struct diag210 *addr);
/* bit is set in flags, when physical cpu info is included in diag 204 data */
#define DIAG204_LPAR_PHYS_FLG 0x80
#define DIAG204_LPAR_NAME_LEN 8 /* lpar name len in diag 204 data */
#define DIAG204_CPU_NAME_LEN 16 /* type name len of cpus in diag224 name table */
/* diag 204 subcodes */
enum diag204_sc {
DIAG204_SUBC_STIB4 = 4,
DIAG204_SUBC_RSI = 5,
DIAG204_SUBC_STIB6 = 6,
DIAG204_SUBC_STIB7 = 7
};
/* The two available diag 204 data formats */
enum diag204_format {
DIAG204_INFO_SIMPLE = 0,
DIAG204_INFO_EXT = 0x00010000
};
struct diag204_info_blk_hdr {
__u8 npar;
__u8 flags;
__u16 tslice;
__u16 phys_cpus;
__u16 this_part;
__u64 curtod;
} __packed;
struct diag204_x_info_blk_hdr {
__u8 npar;
__u8 flags;
__u16 tslice;
__u16 phys_cpus;
__u16 this_part;
__u64 curtod1;
__u64 curtod2;
char reserved[40];
} __packed;
struct diag204_part_hdr {
__u8 pn;
__u8 cpus;
char reserved[6];
char part_name[DIAG204_LPAR_NAME_LEN];
} __packed;
struct diag204_x_part_hdr {
__u8 pn;
__u8 cpus;
__u8 rcpus;
__u8 pflag;
__u32 mlu;
char part_name[DIAG204_LPAR_NAME_LEN];
char lpc_name[8];
char os_name[8];
__u64 online_cs;
__u64 online_es;
__u8 upid;
char reserved1[3];
__u32 group_mlu;
char group_name[8];
char reserved2[32];
} __packed;
struct diag204_cpu_info {
__u16 cpu_addr;
char reserved1[2];
__u8 ctidx;
__u8 cflag;
__u16 weight;
__u64 acc_time;
__u64 lp_time;
} __packed;
struct diag204_x_cpu_info {
__u16 cpu_addr;
char reserved1[2];
__u8 ctidx;
__u8 cflag;
__u16 weight;
__u64 acc_time;
__u64 lp_time;
__u16 min_weight;
__u16 cur_weight;
__u16 max_weight;
char reseved2[2];
__u64 online_time;
__u64 wait_time;
__u32 pma_weight;
__u32 polar_weight;
char reserved3[40];
} __packed;
struct diag204_phys_hdr {
char reserved1[1];
__u8 cpus;
char reserved2[6];
char mgm_name[8];
} __packed;
struct diag204_x_phys_hdr {
char reserved1[1];
__u8 cpus;
char reserved2[6];
char mgm_name[8];
char reserved3[80];
} __packed;
struct diag204_phys_cpu {
__u16 cpu_addr;
char reserved1[2];
__u8 ctidx;
char reserved2[3];
__u64 mgm_time;
char reserved3[8];
} __packed;
struct diag204_x_phys_cpu {
__u16 cpu_addr;
char reserved1[2];
__u8 ctidx;
char reserved2[3];
__u64 mgm_time;
char reserved3[80];
} __packed;
int diag204(unsigned long subcode, unsigned long size, void *addr);
#endif /* _ASM_S390_DIAG_H */

22
arch/s390/kernel/diag.c
View File

@ -162,6 +162,28 @@ int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode)
}
EXPORT_SYMBOL(diag14);
static inline int __diag204(unsigned long subcode, unsigned long size, void *addr)
{
register unsigned long _subcode asm("0") = subcode;
register unsigned long _size asm("1") = size;
asm volatile(
" diag %2,%0,0x204\n"
"0:\n"
EX_TABLE(0b,0b)
: "+d" (_subcode), "+d" (_size) : "d" (addr) : "memory");
if (_subcode)
return -1;
return _size;
}
int diag204(unsigned long subcode, unsigned long size, void *addr)
{
diag_stat_inc(DIAG_STAT_X204);
return __diag204(subcode, size, addr);
}
EXPORT_SYMBOL(diag204);
/*
* Diagnose 210: Get information about a virtual device
*/