1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
280 lines
6.9 KiB
C
280 lines
6.9 KiB
C
/*
|
|
* 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) 1999,2001-2004 Silicon Graphics, Inc. All Rights Reserved.
|
|
*
|
|
* Module to export the system's Firmware Interface Tables, including
|
|
* PROM revision numbers and banners, in /proc
|
|
*/
|
|
#include <linux/config.h>
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/nodemask.h>
|
|
#include <asm/system.h>
|
|
#include <asm/io.h>
|
|
#include <asm/sn/sn_sal.h>
|
|
#include <asm/sn/sn_cpuid.h>
|
|
#include <asm/sn/addrs.h>
|
|
|
|
MODULE_DESCRIPTION("PROM version reporting for /proc");
|
|
MODULE_AUTHOR("Chad Talbott");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
/* Standard Intel FIT entry types */
|
|
#define FIT_ENTRY_FIT_HEADER 0x00 /* FIT header entry */
|
|
#define FIT_ENTRY_PAL_B 0x01 /* PAL_B entry */
|
|
/* Entries 0x02 through 0x0D reserved by Intel */
|
|
#define FIT_ENTRY_PAL_A_PROC 0x0E /* Processor-specific PAL_A entry */
|
|
#define FIT_ENTRY_PAL_A 0x0F /* PAL_A entry, same as... */
|
|
#define FIT_ENTRY_PAL_A_GEN 0x0F /* ...Generic PAL_A entry */
|
|
#define FIT_ENTRY_UNUSED 0x7F /* Unused (reserved by Intel?) */
|
|
/* OEM-defined entries range from 0x10 to 0x7E. */
|
|
#define FIT_ENTRY_SAL_A 0x10 /* SAL_A entry */
|
|
#define FIT_ENTRY_SAL_B 0x11 /* SAL_B entry */
|
|
#define FIT_ENTRY_SALRUNTIME 0x12 /* SAL runtime entry */
|
|
#define FIT_ENTRY_EFI 0x1F /* EFI entry */
|
|
#define FIT_ENTRY_FPSWA 0x20 /* embedded fpswa entry */
|
|
#define FIT_ENTRY_VMLINUX 0x21 /* embedded vmlinux entry */
|
|
|
|
#define FIT_MAJOR_SHIFT (32 + 8)
|
|
#define FIT_MAJOR_MASK ((1 << 8) - 1)
|
|
#define FIT_MINOR_SHIFT 32
|
|
#define FIT_MINOR_MASK ((1 << 8) - 1)
|
|
|
|
#define FIT_MAJOR(q) \
|
|
((unsigned) ((q) >> FIT_MAJOR_SHIFT) & FIT_MAJOR_MASK)
|
|
#define FIT_MINOR(q) \
|
|
((unsigned) ((q) >> FIT_MINOR_SHIFT) & FIT_MINOR_MASK)
|
|
|
|
#define FIT_TYPE_SHIFT (32 + 16)
|
|
#define FIT_TYPE_MASK ((1 << 7) - 1)
|
|
|
|
#define FIT_TYPE(q) \
|
|
((unsigned) ((q) >> FIT_TYPE_SHIFT) & FIT_TYPE_MASK)
|
|
|
|
struct fit_type_map_t {
|
|
unsigned char type;
|
|
const char *name;
|
|
};
|
|
|
|
static const struct fit_type_map_t fit_entry_types[] = {
|
|
{FIT_ENTRY_FIT_HEADER, "FIT Header"},
|
|
{FIT_ENTRY_PAL_A_GEN, "Generic PAL_A"},
|
|
{FIT_ENTRY_PAL_A_PROC, "Processor-specific PAL_A"},
|
|
{FIT_ENTRY_PAL_A, "PAL_A"},
|
|
{FIT_ENTRY_PAL_B, "PAL_B"},
|
|
{FIT_ENTRY_SAL_A, "SAL_A"},
|
|
{FIT_ENTRY_SAL_B, "SAL_B"},
|
|
{FIT_ENTRY_SALRUNTIME, "SAL runtime"},
|
|
{FIT_ENTRY_EFI, "EFI"},
|
|
{FIT_ENTRY_VMLINUX, "Embedded Linux"},
|
|
{FIT_ENTRY_FPSWA, "Embedded FPSWA"},
|
|
{FIT_ENTRY_UNUSED, "Unused"},
|
|
{0xff, "Error"},
|
|
};
|
|
|
|
static const char *fit_type_name(unsigned char type)
|
|
{
|
|
struct fit_type_map_t const *mapp;
|
|
|
|
for (mapp = fit_entry_types; mapp->type != 0xff; mapp++)
|
|
if (type == mapp->type)
|
|
return mapp->name;
|
|
|
|
if ((type > FIT_ENTRY_PAL_A) && (type < FIT_ENTRY_UNUSED))
|
|
return "OEM type";
|
|
if ((type > FIT_ENTRY_PAL_B) && (type < FIT_ENTRY_PAL_A))
|
|
return "Reserved";
|
|
|
|
return "Unknown type";
|
|
}
|
|
|
|
static int
|
|
get_fit_entry(unsigned long nasid, int index, unsigned long *fentry,
|
|
char *banner, int banlen)
|
|
{
|
|
return ia64_sn_get_fit_compt(nasid, index, fentry, banner, banlen);
|
|
}
|
|
|
|
|
|
/*
|
|
* These two routines display the FIT table for each node.
|
|
*/
|
|
static int dump_fit_entry(char *page, unsigned long *fentry)
|
|
{
|
|
unsigned type;
|
|
|
|
type = FIT_TYPE(fentry[1]);
|
|
return sprintf(page, "%02x %-25s %x.%02x %016lx %u\n",
|
|
type,
|
|
fit_type_name(type),
|
|
FIT_MAJOR(fentry[1]), FIT_MINOR(fentry[1]),
|
|
fentry[0],
|
|
/* mult by sixteen to get size in bytes */
|
|
(unsigned)(fentry[1] & 0xffffff) * 16);
|
|
}
|
|
|
|
|
|
/*
|
|
* We assume that the fit table will be small enough that we can print
|
|
* the whole thing into one page. (This is true for our default 16kB
|
|
* pages -- each entry is about 60 chars wide when printed.) I read
|
|
* somewhere that the maximum size of the FIT is 128 entries, so we're
|
|
* OK except for 4kB pages (and no one is going to do that on SN
|
|
* anyway).
|
|
*/
|
|
static int
|
|
dump_fit(char *page, unsigned long nasid)
|
|
{
|
|
unsigned long fentry[2];
|
|
int index;
|
|
char *p;
|
|
|
|
p = page;
|
|
for (index=0;;index++) {
|
|
BUG_ON(index * 60 > PAGE_SIZE);
|
|
if (get_fit_entry(nasid, index, fentry, NULL, 0))
|
|
break;
|
|
p += dump_fit_entry(p, fentry);
|
|
}
|
|
|
|
return p - page;
|
|
}
|
|
|
|
static int
|
|
dump_version(char *page, unsigned long nasid)
|
|
{
|
|
unsigned long fentry[2];
|
|
char banner[128];
|
|
int index;
|
|
int len;
|
|
|
|
for (index = 0; ; index++) {
|
|
if (get_fit_entry(nasid, index, fentry, banner,
|
|
sizeof(banner)))
|
|
return 0;
|
|
if (FIT_TYPE(fentry[1]) == FIT_ENTRY_SAL_A)
|
|
break;
|
|
}
|
|
|
|
len = sprintf(page, "%x.%02x\n", FIT_MAJOR(fentry[1]),
|
|
FIT_MINOR(fentry[1]));
|
|
page += len;
|
|
|
|
if (banner[0])
|
|
len += snprintf(page, PAGE_SIZE-len, "%s\n", banner);
|
|
|
|
return len;
|
|
}
|
|
|
|
/* same as in proc_misc.c */
|
|
static int
|
|
proc_calc_metrics(char *page, char **start, off_t off, int count, int *eof,
|
|
int len)
|
|
{
|
|
if (len <= off + count)
|
|
*eof = 1;
|
|
*start = page + off;
|
|
len -= off;
|
|
if (len > count)
|
|
len = count;
|
|
if (len < 0)
|
|
len = 0;
|
|
return len;
|
|
}
|
|
|
|
static int
|
|
read_version_entry(char *page, char **start, off_t off, int count, int *eof,
|
|
void *data)
|
|
{
|
|
int len = 0;
|
|
|
|
/* data holds the NASID of the node */
|
|
len = dump_version(page, (unsigned long)data);
|
|
len = proc_calc_metrics(page, start, off, count, eof, len);
|
|
return len;
|
|
}
|
|
|
|
static int
|
|
read_fit_entry(char *page, char **start, off_t off, int count, int *eof,
|
|
void *data)
|
|
{
|
|
int len = 0;
|
|
|
|
/* data holds the NASID of the node */
|
|
len = dump_fit(page, (unsigned long)data);
|
|
len = proc_calc_metrics(page, start, off, count, eof, len);
|
|
|
|
return len;
|
|
}
|
|
|
|
/* module entry points */
|
|
int __init prominfo_init(void);
|
|
void __exit prominfo_exit(void);
|
|
|
|
module_init(prominfo_init);
|
|
module_exit(prominfo_exit);
|
|
|
|
static struct proc_dir_entry **proc_entries;
|
|
static struct proc_dir_entry *sgi_prominfo_entry;
|
|
|
|
#define NODE_NAME_LEN 11
|
|
|
|
int __init prominfo_init(void)
|
|
{
|
|
struct proc_dir_entry **entp;
|
|
struct proc_dir_entry *p;
|
|
cnodeid_t cnodeid;
|
|
unsigned long nasid;
|
|
char name[NODE_NAME_LEN];
|
|
|
|
if (!ia64_platform_is("sn2"))
|
|
return 0;
|
|
|
|
proc_entries = kmalloc(num_online_nodes() * sizeof(struct proc_dir_entry *),
|
|
GFP_KERNEL);
|
|
|
|
sgi_prominfo_entry = proc_mkdir("sgi_prominfo", NULL);
|
|
|
|
entp = proc_entries;
|
|
for_each_online_node(cnodeid) {
|
|
sprintf(name, "node%d", cnodeid);
|
|
*entp = proc_mkdir(name, sgi_prominfo_entry);
|
|
nasid = cnodeid_to_nasid(cnodeid);
|
|
p = create_proc_read_entry(
|
|
"fit", 0, *entp, read_fit_entry,
|
|
(void *)nasid);
|
|
if (p)
|
|
p->owner = THIS_MODULE;
|
|
p = create_proc_read_entry(
|
|
"version", 0, *entp, read_version_entry,
|
|
(void *)nasid);
|
|
if (p)
|
|
p->owner = THIS_MODULE;
|
|
entp++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void __exit prominfo_exit(void)
|
|
{
|
|
struct proc_dir_entry **entp;
|
|
unsigned cnodeid;
|
|
char name[NODE_NAME_LEN];
|
|
|
|
entp = proc_entries;
|
|
for_each_online_node(cnodeid) {
|
|
remove_proc_entry("fit", *entp);
|
|
remove_proc_entry("version", *entp);
|
|
sprintf(name, "node%d", cnodeid);
|
|
remove_proc_entry(name, sgi_prominfo_entry);
|
|
entp++;
|
|
}
|
|
remove_proc_entry("sgi_prominfo", NULL);
|
|
kfree(proc_entries);
|
|
}
|