2006-06-23 09:05:06 +00:00
|
|
|
/*
|
2006-09-20 13:58:44 +00:00
|
|
|
* arch/s390/hypfs/hypfs_diag.c
|
2006-06-23 09:05:06 +00:00
|
|
|
* Hypervisor filesystem for Linux on s390. Diag 204 and 224
|
|
|
|
* implementation.
|
|
|
|
*
|
2008-12-25 12:39:39 +00:00
|
|
|
* Copyright IBM Corp. 2006, 2008
|
2006-06-23 09:05:06 +00:00
|
|
|
* Author(s): Michael Holzheu <holzheu@de.ibm.com>
|
|
|
|
*/
|
|
|
|
|
2008-12-25 12:39:39 +00:00
|
|
|
#define KMSG_COMPONENT "hypfs"
|
|
|
|
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
|
|
|
|
|
2006-06-23 09:05:06 +00:00
|
|
|
#include <linux/types.h>
|
|
|
|
#include <linux/errno.h>
|
2009-03-31 17:16:02 +00:00
|
|
|
#include <linux/slab.h>
|
2006-06-23 09:05:06 +00:00
|
|
|
#include <linux/string.h>
|
|
|
|
#include <linux/vmalloc.h>
|
2010-05-17 08:00:20 +00:00
|
|
|
#include <linux/mm.h>
|
2006-06-23 09:05:06 +00:00
|
|
|
#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 */
|
|
|
|
|
2010-05-17 08:00:20 +00:00
|
|
|
#define DBFS_D204_HDR_VERSION 0
|
|
|
|
|
2006-06-23 09:05:06 +00:00
|
|
|
/* 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 */
|
|
|
|
|
|
|
|
static void *diag204_buf; /* 4K aligned buffer for diag204 data */
|
|
|
|
static void *diag204_buf_vmalloc; /* vmalloc pointer for diag204 data */
|
|
|
|
static int diag204_buf_pages; /* number of pages for diag204 data */
|
|
|
|
|
2010-05-17 08:00:20 +00:00
|
|
|
static struct dentry *dbfs_d204_file;
|
|
|
|
|
2006-06-23 09:05:06 +00:00
|
|
|
/*
|
|
|
|
* DIAG 204 data structures and 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
|
|
|
|
* each struct member instead. This should make the code more readable.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* 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);
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* 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);
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
2009-12-18 16:43:27 +00:00
|
|
|
strim(name);
|
2006-06-23 09:05:06 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline __u64 cpu_info__online_time(enum diag204_format type, void *hdr)
|
|
|
|
{
|
|
|
|
if (type == INFO_SIMPLE)
|
|
|
|
return 0; /* online_time not available in simple info */
|
|
|
|
else /* INFO_EXT */
|
|
|
|
return ((struct 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);
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* 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);
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Diagnose 204 functions */
|
|
|
|
|
|
|
|
static int diag204(unsigned long subcode, unsigned long size, void *addr)
|
|
|
|
{
|
|
|
|
register unsigned long _subcode asm("0") = subcode;
|
|
|
|
register unsigned long _size asm("1") = size;
|
|
|
|
|
2006-09-28 14:56:43 +00:00
|
|
|
asm volatile(
|
|
|
|
" diag %2,%0,0x204\n"
|
|
|
|
"0:\n"
|
|
|
|
EX_TABLE(0b,0b)
|
|
|
|
: "+d" (_subcode), "+d" (_size) : "d" (addr) : "memory");
|
2006-06-23 09:05:06 +00:00
|
|
|
if (_subcode)
|
|
|
|
return -1;
|
2006-09-28 14:56:43 +00:00
|
|
|
return _size;
|
2006-06-23 09:05:06 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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
|
|
|
|
* should) use vmalloc, since we need a lot of memory in that case. Currently
|
|
|
|
* up to 93 pages!
|
|
|
|
*/
|
|
|
|
|
|
|
|
static void diag204_free_buffer(void)
|
|
|
|
{
|
|
|
|
if (!diag204_buf)
|
|
|
|
return;
|
|
|
|
if (diag204_buf_vmalloc) {
|
|
|
|
vfree(diag204_buf_vmalloc);
|
|
|
|
diag204_buf_vmalloc = NULL;
|
|
|
|
} else {
|
|
|
|
free_pages((unsigned long) diag204_buf, 0);
|
|
|
|
}
|
|
|
|
diag204_buf = NULL;
|
|
|
|
}
|
|
|
|
|
2010-05-17 08:00:20 +00:00
|
|
|
static void *page_align_ptr(void *ptr)
|
|
|
|
{
|
|
|
|
return (void *) PAGE_ALIGN((unsigned long) ptr);
|
|
|
|
}
|
|
|
|
|
2006-06-23 09:05:06 +00:00
|
|
|
static void *diag204_alloc_vbuf(int pages)
|
|
|
|
{
|
|
|
|
/* The buffer has to be page aligned! */
|
|
|
|
diag204_buf_vmalloc = vmalloc(PAGE_SIZE * (pages + 1));
|
|
|
|
if (!diag204_buf_vmalloc)
|
|
|
|
return ERR_PTR(-ENOMEM);
|
2010-05-17 08:00:20 +00:00
|
|
|
diag204_buf = page_align_ptr(diag204_buf_vmalloc);
|
2006-06-23 09:05:06 +00:00
|
|
|
diag204_buf_pages = pages;
|
|
|
|
return diag204_buf;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void *diag204_alloc_rbuf(void)
|
|
|
|
{
|
|
|
|
diag204_buf = (void*)__get_free_pages(GFP_KERNEL,0);
|
2006-12-15 16:18:10 +00:00
|
|
|
if (!diag204_buf)
|
2006-06-23 09:05:06 +00:00
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
diag204_buf_pages = 1;
|
|
|
|
return diag204_buf;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void *diag204_get_buffer(enum diag204_format fmt, int *pages)
|
|
|
|
{
|
|
|
|
if (diag204_buf) {
|
|
|
|
*pages = diag204_buf_pages;
|
|
|
|
return diag204_buf;
|
|
|
|
}
|
|
|
|
if (fmt == INFO_SIMPLE) {
|
|
|
|
*pages = 1;
|
|
|
|
return diag204_alloc_rbuf();
|
|
|
|
} else {/* INFO_EXT */
|
2006-09-28 14:55:28 +00:00
|
|
|
*pages = diag204((unsigned long)SUBC_RSI |
|
|
|
|
(unsigned long)INFO_EXT, 0, NULL);
|
2006-06-23 09:05:06 +00:00
|
|
|
if (*pages <= 0)
|
|
|
|
return ERR_PTR(-ENOSYS);
|
|
|
|
else
|
|
|
|
return diag204_alloc_vbuf(*pages);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* diag204_probe() has to find out, which type of diagnose 204 implementation
|
|
|
|
* we have on our machine. Currently there are three possible scanarios:
|
|
|
|
* - subcode 4 + simple data format (only one page)
|
|
|
|
* - subcode 4-6 + extended data format
|
|
|
|
* - subcode 4-7 + extended data format
|
|
|
|
*
|
|
|
|
* Subcode 5 is used to retrieve the size of the data, provided by subcodes
|
|
|
|
* 6 and 7. Subcode 7 basically has the same function as subcode 6. In addition
|
|
|
|
* to subcode 6 it provides also information about secondary cpus.
|
|
|
|
* In order to get as much information as possible, we first try
|
|
|
|
* subcode 7, then 6 and if both fail, we use subcode 4.
|
|
|
|
*/
|
|
|
|
|
|
|
|
static int diag204_probe(void)
|
|
|
|
{
|
|
|
|
void *buf;
|
|
|
|
int pages, rc;
|
|
|
|
|
|
|
|
buf = diag204_get_buffer(INFO_EXT, &pages);
|
|
|
|
if (!IS_ERR(buf)) {
|
2006-09-20 13:58:47 +00:00
|
|
|
if (diag204((unsigned long)SUBC_STIB7 |
|
|
|
|
(unsigned long)INFO_EXT, pages, buf) >= 0) {
|
2006-06-23 09:05:06 +00:00
|
|
|
diag204_store_sc = SUBC_STIB7;
|
|
|
|
diag204_info_type = INFO_EXT;
|
|
|
|
goto out;
|
|
|
|
}
|
2006-09-20 13:58:47 +00:00
|
|
|
if (diag204((unsigned long)SUBC_STIB6 |
|
|
|
|
(unsigned long)INFO_EXT, pages, buf) >= 0) {
|
2009-10-14 10:43:44 +00:00
|
|
|
diag204_store_sc = SUBC_STIB6;
|
2006-06-23 09:05:06 +00:00
|
|
|
diag204_info_type = INFO_EXT;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
diag204_free_buffer();
|
|
|
|
}
|
|
|
|
|
|
|
|
/* subcodes 6 and 7 failed, now try subcode 4 */
|
|
|
|
|
|
|
|
buf = diag204_get_buffer(INFO_SIMPLE, &pages);
|
|
|
|
if (IS_ERR(buf)) {
|
|
|
|
rc = PTR_ERR(buf);
|
|
|
|
goto fail_alloc;
|
|
|
|
}
|
2006-09-20 13:58:47 +00:00
|
|
|
if (diag204((unsigned long)SUBC_STIB4 |
|
|
|
|
(unsigned long)INFO_SIMPLE, pages, buf) >= 0) {
|
2006-06-23 09:05:06 +00:00
|
|
|
diag204_store_sc = SUBC_STIB4;
|
|
|
|
diag204_info_type = INFO_SIMPLE;
|
|
|
|
goto out;
|
|
|
|
} else {
|
|
|
|
rc = -ENOSYS;
|
|
|
|
goto fail_store;
|
|
|
|
}
|
|
|
|
out:
|
|
|
|
rc = 0;
|
|
|
|
fail_store:
|
|
|
|
diag204_free_buffer();
|
|
|
|
fail_alloc:
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
2010-05-17 08:00:20 +00:00
|
|
|
static int diag204_do_store(void *buf, int pages)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
rc = diag204((unsigned long) diag204_store_sc |
|
|
|
|
(unsigned long) diag204_info_type, pages, buf);
|
|
|
|
return rc < 0 ? -ENOSYS : 0;
|
|
|
|
}
|
|
|
|
|
2006-06-23 09:05:06 +00:00
|
|
|
static void *diag204_store(void)
|
|
|
|
{
|
|
|
|
void *buf;
|
2010-05-17 08:00:20 +00:00
|
|
|
int pages, rc;
|
2006-06-23 09:05:06 +00:00
|
|
|
|
|
|
|
buf = diag204_get_buffer(diag204_info_type, &pages);
|
|
|
|
if (IS_ERR(buf))
|
|
|
|
goto out;
|
2010-05-17 08:00:20 +00:00
|
|
|
rc = diag204_do_store(buf, pages);
|
|
|
|
if (rc)
|
|
|
|
return ERR_PTR(rc);
|
2006-06-23 09:05:06 +00:00
|
|
|
out:
|
|
|
|
return buf;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Diagnose 224 functions */
|
|
|
|
|
2007-05-31 15:38:01 +00:00
|
|
|
static int diag224(void *ptr)
|
2006-06-23 09:05:06 +00:00
|
|
|
{
|
2010-02-26 21:37:41 +00:00
|
|
|
int rc = -EOPNOTSUPP;
|
2007-05-31 15:38:01 +00:00
|
|
|
|
|
|
|
asm volatile(
|
|
|
|
" diag %1,%2,0x224\n"
|
|
|
|
"0: lhi %0,0x0\n"
|
|
|
|
"1:\n"
|
|
|
|
EX_TABLE(0b,1b)
|
|
|
|
: "+d" (rc) :"d" (0), "d" (ptr) : "memory");
|
|
|
|
return rc;
|
2006-06-23 09:05:06 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int diag224_get_name_table(void)
|
|
|
|
{
|
|
|
|
/* memory must be below 2GB */
|
|
|
|
diag224_cpu_names = kmalloc(PAGE_SIZE, GFP_KERNEL | GFP_DMA);
|
|
|
|
if (!diag224_cpu_names)
|
|
|
|
return -ENOMEM;
|
2007-05-31 15:38:01 +00:00
|
|
|
if (diag224(diag224_cpu_names)) {
|
|
|
|
kfree(diag224_cpu_names);
|
2010-02-26 21:37:41 +00:00
|
|
|
return -EOPNOTSUPP;
|
2007-05-31 15:38:01 +00:00
|
|
|
}
|
2006-06-23 09:05:06 +00:00
|
|
|
EBCASC(diag224_cpu_names + 16, (*diag224_cpu_names + 1) * 16);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void diag224_delete_name_table(void)
|
|
|
|
{
|
|
|
|
kfree(diag224_cpu_names);
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
2009-12-18 16:43:27 +00:00
|
|
|
strim(name);
|
2006-06-23 09:05:06 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-05-17 08:00:20 +00:00
|
|
|
struct dbfs_d204_hdr {
|
|
|
|
u64 len; /* Length of d204 buffer without header */
|
|
|
|
u16 version; /* Version of header */
|
|
|
|
u8 sc; /* Used subcode */
|
|
|
|
char reserved[53];
|
|
|
|
} __attribute__ ((packed));
|
|
|
|
|
|
|
|
struct dbfs_d204 {
|
|
|
|
struct dbfs_d204_hdr hdr; /* 64 byte header */
|
|
|
|
char buf[]; /* d204 buffer */
|
|
|
|
} __attribute__ ((packed));
|
|
|
|
|
2011-01-05 11:47:43 +00:00
|
|
|
static int dbfs_d204_create(void **data, void **data_free_ptr, size_t *size)
|
2010-05-17 08:00:20 +00:00
|
|
|
{
|
|
|
|
struct dbfs_d204 *d204;
|
|
|
|
int rc, buf_size;
|
2011-01-05 11:47:43 +00:00
|
|
|
void *base;
|
2010-05-17 08:00:20 +00:00
|
|
|
|
|
|
|
buf_size = PAGE_SIZE * (diag204_buf_pages + 1) + sizeof(d204->hdr);
|
2011-05-28 17:36:21 +00:00
|
|
|
base = vzalloc(buf_size);
|
2011-01-05 11:47:43 +00:00
|
|
|
if (!base)
|
|
|
|
return -ENOMEM;
|
|
|
|
d204 = page_align_ptr(base + sizeof(d204->hdr)) - sizeof(d204->hdr);
|
|
|
|
rc = diag204_do_store(d204->buf, diag204_buf_pages);
|
|
|
|
if (rc) {
|
|
|
|
vfree(base);
|
|
|
|
return rc;
|
2010-05-17 08:00:20 +00:00
|
|
|
}
|
|
|
|
d204->hdr.version = DBFS_D204_HDR_VERSION;
|
|
|
|
d204->hdr.len = PAGE_SIZE * diag204_buf_pages;
|
|
|
|
d204->hdr.sc = diag204_store_sc;
|
2011-01-05 11:47:43 +00:00
|
|
|
*data = d204;
|
|
|
|
*data_free_ptr = base;
|
|
|
|
*size = d204->hdr.len + sizeof(struct dbfs_d204_hdr);
|
2010-05-17 08:00:20 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-01-05 11:47:43 +00:00
|
|
|
static struct hypfs_dbfs_file dbfs_file_d204 = {
|
|
|
|
.name = "diag_204",
|
|
|
|
.data_create = dbfs_d204_create,
|
|
|
|
.data_free = vfree,
|
2010-05-17 08:00:20 +00:00
|
|
|
};
|
|
|
|
|
2006-06-23 09:05:06 +00:00
|
|
|
__init int hypfs_diag_init(void)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
if (diag204_probe()) {
|
2008-12-25 12:39:39 +00:00
|
|
|
pr_err("The hardware system does not support hypfs\n");
|
2006-06-23 09:05:06 +00:00
|
|
|
return -ENODATA;
|
|
|
|
}
|
2010-05-17 08:00:20 +00:00
|
|
|
if (diag204_info_type == INFO_EXT) {
|
2011-01-05 11:47:43 +00:00
|
|
|
rc = hypfs_dbfs_create_file(&dbfs_file_d204);
|
2010-05-17 08:00:20 +00:00
|
|
|
if (rc)
|
2010-10-29 14:50:39 +00:00
|
|
|
return rc;
|
2010-05-17 08:00:20 +00:00
|
|
|
}
|
2010-10-29 14:50:39 +00:00
|
|
|
if (MACHINE_IS_LPAR) {
|
|
|
|
rc = diag224_get_name_table();
|
|
|
|
if (rc) {
|
|
|
|
pr_err("The hardware system does not provide all "
|
|
|
|
"functions required by hypfs\n");
|
|
|
|
debugfs_remove(dbfs_d204_file);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return 0;
|
2006-06-23 09:05:06 +00:00
|
|
|
}
|
|
|
|
|
2006-09-20 13:59:12 +00:00
|
|
|
void hypfs_diag_exit(void)
|
2006-06-23 09:05:06 +00:00
|
|
|
{
|
2010-05-17 08:00:20 +00:00
|
|
|
debugfs_remove(dbfs_d204_file);
|
2006-06-23 09:05:06 +00:00
|
|
|
diag224_delete_name_table();
|
|
|
|
diag204_free_buffer();
|
2011-01-05 11:47:43 +00:00
|
|
|
hypfs_dbfs_remove_file(&dbfs_file_d204);
|
2006-06-23 09:05:06 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Functions to create the directory structure
|
|
|
|
* *******************************************
|
|
|
|
*/
|
|
|
|
|
|
|
|
static int hypfs_create_cpu_files(struct super_block *sb,
|
|
|
|
struct dentry *cpus_dir, void *cpu_info)
|
|
|
|
{
|
|
|
|
struct dentry *cpu_dir;
|
|
|
|
char buffer[TMP_SIZE];
|
|
|
|
void *rc;
|
|
|
|
|
|
|
|
snprintf(buffer, TMP_SIZE, "%d", cpu_info__cpu_addr(diag204_info_type,
|
|
|
|
cpu_info));
|
|
|
|
cpu_dir = hypfs_mkdir(sb, cpus_dir, buffer);
|
|
|
|
rc = hypfs_create_u64(sb, cpu_dir, "mgmtime",
|
|
|
|
cpu_info__acc_time(diag204_info_type, cpu_info) -
|
|
|
|
cpu_info__lp_time(diag204_info_type, cpu_info));
|
|
|
|
if (IS_ERR(rc))
|
|
|
|
return PTR_ERR(rc);
|
|
|
|
rc = hypfs_create_u64(sb, cpu_dir, "cputime",
|
|
|
|
cpu_info__lp_time(diag204_info_type, cpu_info));
|
|
|
|
if (IS_ERR(rc))
|
|
|
|
return PTR_ERR(rc);
|
|
|
|
if (diag204_info_type == INFO_EXT) {
|
|
|
|
rc = hypfs_create_u64(sb, cpu_dir, "onlinetime",
|
|
|
|
cpu_info__online_time(diag204_info_type,
|
|
|
|
cpu_info));
|
|
|
|
if (IS_ERR(rc))
|
|
|
|
return PTR_ERR(rc);
|
|
|
|
}
|
|
|
|
diag224_idx2name(cpu_info__ctidx(diag204_info_type, cpu_info), buffer);
|
|
|
|
rc = hypfs_create_str(sb, cpu_dir, "type", buffer);
|
|
|
|
if (IS_ERR(rc))
|
|
|
|
return PTR_ERR(rc);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void *hypfs_create_lpar_files(struct super_block *sb,
|
|
|
|
struct dentry *systems_dir, void *part_hdr)
|
|
|
|
{
|
|
|
|
struct dentry *cpus_dir;
|
|
|
|
struct dentry *lpar_dir;
|
|
|
|
char lpar_name[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_dir = hypfs_mkdir(sb, systems_dir, lpar_name);
|
|
|
|
if (IS_ERR(lpar_dir))
|
|
|
|
return lpar_dir;
|
|
|
|
cpus_dir = hypfs_mkdir(sb, lpar_dir, "cpus");
|
|
|
|
if (IS_ERR(cpus_dir))
|
|
|
|
return cpus_dir;
|
|
|
|
cpu_info = part_hdr + part_hdr__size(diag204_info_type);
|
|
|
|
for (i = 0; i < part_hdr__rcpus(diag204_info_type, part_hdr); i++) {
|
|
|
|
int rc;
|
|
|
|
rc = hypfs_create_cpu_files(sb, cpus_dir, cpu_info);
|
|
|
|
if (rc)
|
|
|
|
return ERR_PTR(rc);
|
|
|
|
cpu_info += cpu_info__size(diag204_info_type);
|
|
|
|
}
|
|
|
|
return cpu_info;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int hypfs_create_phys_cpu_files(struct super_block *sb,
|
|
|
|
struct dentry *cpus_dir, void *cpu_info)
|
|
|
|
{
|
|
|
|
struct dentry *cpu_dir;
|
|
|
|
char buffer[TMP_SIZE];
|
|
|
|
void *rc;
|
|
|
|
|
|
|
|
snprintf(buffer, TMP_SIZE, "%i", phys_cpu__cpu_addr(diag204_info_type,
|
|
|
|
cpu_info));
|
|
|
|
cpu_dir = hypfs_mkdir(sb, cpus_dir, buffer);
|
|
|
|
if (IS_ERR(cpu_dir))
|
|
|
|
return PTR_ERR(cpu_dir);
|
|
|
|
rc = hypfs_create_u64(sb, cpu_dir, "mgmtime",
|
|
|
|
phys_cpu__mgm_time(diag204_info_type, cpu_info));
|
|
|
|
if (IS_ERR(rc))
|
|
|
|
return PTR_ERR(rc);
|
|
|
|
diag224_idx2name(phys_cpu__ctidx(diag204_info_type, cpu_info), buffer);
|
|
|
|
rc = hypfs_create_str(sb, cpu_dir, "type", buffer);
|
|
|
|
if (IS_ERR(rc))
|
|
|
|
return PTR_ERR(rc);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void *hypfs_create_phys_files(struct super_block *sb,
|
|
|
|
struct dentry *parent_dir, void *phys_hdr)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
void *cpu_info;
|
|
|
|
struct dentry *cpus_dir;
|
|
|
|
|
|
|
|
cpus_dir = hypfs_mkdir(sb, parent_dir, "cpus");
|
|
|
|
if (IS_ERR(cpus_dir))
|
|
|
|
return cpus_dir;
|
|
|
|
cpu_info = phys_hdr + phys_hdr__size(diag204_info_type);
|
|
|
|
for (i = 0; i < phys_hdr__cpus(diag204_info_type, phys_hdr); i++) {
|
|
|
|
int rc;
|
|
|
|
rc = hypfs_create_phys_cpu_files(sb, cpus_dir, cpu_info);
|
|
|
|
if (rc)
|
|
|
|
return ERR_PTR(rc);
|
|
|
|
cpu_info += phys_cpu__size(diag204_info_type);
|
|
|
|
}
|
|
|
|
return cpu_info;
|
|
|
|
}
|
|
|
|
|
|
|
|
int hypfs_diag_create_files(struct super_block *sb, struct dentry *root)
|
|
|
|
{
|
|
|
|
struct dentry *systems_dir, *hyp_dir;
|
|
|
|
void *time_hdr, *part_hdr;
|
|
|
|
int i, rc;
|
|
|
|
void *buffer, *ptr;
|
|
|
|
|
|
|
|
buffer = diag204_store();
|
|
|
|
if (IS_ERR(buffer))
|
|
|
|
return PTR_ERR(buffer);
|
|
|
|
|
|
|
|
systems_dir = hypfs_mkdir(sb, root, "systems");
|
|
|
|
if (IS_ERR(systems_dir)) {
|
|
|
|
rc = PTR_ERR(systems_dir);
|
|
|
|
goto err_out;
|
|
|
|
}
|
|
|
|
time_hdr = (struct x_info_blk_hdr *)buffer;
|
|
|
|
part_hdr = time_hdr + info_blk_hdr__size(diag204_info_type);
|
|
|
|
for (i = 0; i < info_blk_hdr__npar(diag204_info_type, time_hdr); i++) {
|
|
|
|
part_hdr = hypfs_create_lpar_files(sb, systems_dir, part_hdr);
|
|
|
|
if (IS_ERR(part_hdr)) {
|
|
|
|
rc = PTR_ERR(part_hdr);
|
|
|
|
goto err_out;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (info_blk_hdr__flags(diag204_info_type, time_hdr) & LPAR_PHYS_FLG) {
|
|
|
|
ptr = hypfs_create_phys_files(sb, root, part_hdr);
|
|
|
|
if (IS_ERR(ptr)) {
|
|
|
|
rc = PTR_ERR(ptr);
|
|
|
|
goto err_out;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
hyp_dir = hypfs_mkdir(sb, root, "hyp");
|
|
|
|
if (IS_ERR(hyp_dir)) {
|
|
|
|
rc = PTR_ERR(hyp_dir);
|
|
|
|
goto err_out;
|
|
|
|
}
|
|
|
|
ptr = hypfs_create_str(sb, hyp_dir, "type", "LPAR Hypervisor");
|
|
|
|
if (IS_ERR(ptr)) {
|
|
|
|
rc = PTR_ERR(ptr);
|
|
|
|
goto err_out;
|
|
|
|
}
|
|
|
|
rc = 0;
|
|
|
|
|
|
|
|
err_out:
|
|
|
|
return rc;
|
|
|
|
}
|