Contributors: 26
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Martin Schwidefsky |
737 |
51.22% |
12 |
19.05% |
| Heiko Carstens |
141 |
9.80% |
14 |
22.22% |
| Linus Torvalds |
102 |
7.09% |
5 |
7.94% |
| Michael Holzheu |
97 |
6.74% |
4 |
6.35% |
| Sven Schnelle |
71 |
4.93% |
1 |
1.59% |
| Julian Wiedmann |
49 |
3.41% |
1 |
1.59% |
| Alexander Egorenkov |
37 |
2.57% |
1 |
1.59% |
| Janosch Frank |
36 |
2.50% |
2 |
3.17% |
| Thomas Richter |
28 |
1.95% |
1 |
1.59% |
| Linus Torvalds (pre-git) |
26 |
1.81% |
5 |
7.94% |
| Gerald Schaefer |
25 |
1.74% |
1 |
1.59% |
| Mete Durlu |
17 |
1.18% |
2 |
3.17% |
| Anastasia Eskova |
16 |
1.11% |
1 |
1.59% |
| Collin Walling |
16 |
1.11% |
1 |
1.59% |
| Frank Munzert |
14 |
0.97% |
1 |
1.59% |
| Alexander Gordeev |
6 |
0.42% |
1 |
1.59% |
| Thomas Gleixner |
6 |
0.42% |
1 |
1.59% |
| Rusty Russell |
3 |
0.21% |
1 |
1.59% |
| Liu Shixin |
3 |
0.21% |
1 |
1.59% |
| Tejun Heo |
2 |
0.14% |
1 |
1.59% |
| Sebastian Andrzej Siewior |
2 |
0.14% |
1 |
1.59% |
| Michael Müller |
1 |
0.07% |
1 |
1.59% |
| Greg Kroah-Hartman |
1 |
0.07% |
1 |
1.59% |
| Paul Gortmaker |
1 |
0.07% |
1 |
1.59% |
| Philipp Rudo |
1 |
0.07% |
1 |
1.59% |
| Ilya Leoshkevich |
1 |
0.07% |
1 |
1.59% |
| Total |
1439 |
|
63 |
|
// SPDX-License-Identifier: GPL-2.0
/*
* Implementation of s390 diagnose codes
*
* Copyright IBM Corp. 2007
* Author(s): Michael Holzheu <holzheu@de.ibm.com>
*/
#include <linux/export.h>
#include <linux/init.h>
#include <linux/cpu.h>
#include <linux/seq_file.h>
#include <linux/debugfs.h>
#include <linux/vmalloc.h>
#include <asm/asm-extable.h>
#include <asm/diag.h>
#include <asm/trace/diag.h>
#include <asm/sections.h>
#include "entry.h"
struct diag_stat {
unsigned int counter[NR_DIAG_STAT];
};
static DEFINE_PER_CPU(struct diag_stat, diag_stat);
struct diag_desc {
int code;
char *name;
};
static const struct diag_desc diag_map[NR_DIAG_STAT] = {
[DIAG_STAT_X008] = { .code = 0x008, .name = "Console Function" },
[DIAG_STAT_X00C] = { .code = 0x00c, .name = "Pseudo Timer" },
[DIAG_STAT_X010] = { .code = 0x010, .name = "Release Pages" },
[DIAG_STAT_X014] = { .code = 0x014, .name = "Spool File Services" },
[DIAG_STAT_X044] = { .code = 0x044, .name = "Voluntary Timeslice End" },
[DIAG_STAT_X064] = { .code = 0x064, .name = "NSS Manipulation" },
[DIAG_STAT_X08C] = { .code = 0x08c, .name = "Access 3270 Display Device Information" },
[DIAG_STAT_X09C] = { .code = 0x09c, .name = "Relinquish Timeslice" },
[DIAG_STAT_X0DC] = { .code = 0x0dc, .name = "Appldata Control" },
[DIAG_STAT_X204] = { .code = 0x204, .name = "Logical-CPU Utilization" },
[DIAG_STAT_X210] = { .code = 0x210, .name = "Device Information" },
[DIAG_STAT_X224] = { .code = 0x224, .name = "EBCDIC-Name Table" },
[DIAG_STAT_X250] = { .code = 0x250, .name = "Block I/O" },
[DIAG_STAT_X258] = { .code = 0x258, .name = "Page-Reference Services" },
[DIAG_STAT_X26C] = { .code = 0x26c, .name = "Certain System Information" },
[DIAG_STAT_X288] = { .code = 0x288, .name = "Time Bomb" },
[DIAG_STAT_X2C4] = { .code = 0x2c4, .name = "FTP Services" },
[DIAG_STAT_X2FC] = { .code = 0x2fc, .name = "Guest Performance Data" },
[DIAG_STAT_X304] = { .code = 0x304, .name = "Partition-Resource Service" },
[DIAG_STAT_X308] = { .code = 0x308, .name = "List-Directed IPL" },
[DIAG_STAT_X318] = { .code = 0x318, .name = "CP Name and Version Codes" },
[DIAG_STAT_X320] = { .code = 0x320, .name = "Certificate Store" },
[DIAG_STAT_X500] = { .code = 0x500, .name = "Virtio Service" },
};
struct diag_ops __amode31_ref diag_amode31_ops = {
.diag210 = _diag210_amode31,
.diag26c = _diag26c_amode31,
.diag14 = _diag14_amode31,
.diag0c = _diag0c_amode31,
.diag8c = _diag8c_amode31,
.diag308_reset = _diag308_reset_amode31
};
static struct diag210 _diag210_tmp_amode31 __section(".amode31.data");
struct diag210 __amode31_ref *__diag210_tmp_amode31 = &_diag210_tmp_amode31;
static struct diag8c _diag8c_tmp_amode31 __section(".amode31.data");
static struct diag8c __amode31_ref *__diag8c_tmp_amode31 = &_diag8c_tmp_amode31;
static int show_diag_stat(struct seq_file *m, void *v)
{
struct diag_stat *stat;
unsigned long n = (unsigned long) v - 1;
int cpu, prec, tmp;
cpus_read_lock();
if (n == 0) {
seq_puts(m, " ");
for_each_online_cpu(cpu) {
prec = 10;
for (tmp = 10; cpu >= tmp; tmp *= 10)
prec--;
seq_printf(m, "%*s%d", prec, "CPU", cpu);
}
seq_putc(m, '\n');
} else if (n <= NR_DIAG_STAT) {
seq_printf(m, "diag %03x:", diag_map[n-1].code);
for_each_online_cpu(cpu) {
stat = &per_cpu(diag_stat, cpu);
seq_printf(m, " %10u", stat->counter[n-1]);
}
seq_printf(m, " %s\n", diag_map[n-1].name);
}
cpus_read_unlock();
return 0;
}
static void *show_diag_stat_start(struct seq_file *m, loff_t *pos)
{
return *pos <= NR_DIAG_STAT ? (void *)((unsigned long) *pos + 1) : NULL;
}
static void *show_diag_stat_next(struct seq_file *m, void *v, loff_t *pos)
{
++*pos;
return show_diag_stat_start(m, pos);
}
static void show_diag_stat_stop(struct seq_file *m, void *v)
{
}
static const struct seq_operations show_diag_stat_sops = {
.start = show_diag_stat_start,
.next = show_diag_stat_next,
.stop = show_diag_stat_stop,
.show = show_diag_stat,
};
DEFINE_SEQ_ATTRIBUTE(show_diag_stat);
static int __init show_diag_stat_init(void)
{
debugfs_create_file("diag_stat", 0400, NULL, NULL,
&show_diag_stat_fops);
return 0;
}
device_initcall(show_diag_stat_init);
void diag_stat_inc(enum diag_stat_enum nr)
{
this_cpu_inc(diag_stat.counter[nr]);
trace_s390_diagnose(diag_map[nr].code);
}
EXPORT_SYMBOL(diag_stat_inc);
void notrace diag_stat_inc_norecursion(enum diag_stat_enum nr)
{
this_cpu_inc(diag_stat.counter[nr]);
trace_s390_diagnose_norecursion(diag_map[nr].code);
}
EXPORT_SYMBOL(diag_stat_inc_norecursion);
/*
* Diagnose 0c: Pseudo Timer
*/
void diag0c(struct hypfs_diag0c_entry *data)
{
diag_stat_inc(DIAG_STAT_X00C);
diag_amode31_ops.diag0c(virt_to_phys(data));
}
/*
* Diagnose 14: Input spool file manipulation
*
* The subcode parameter determines the type of the first parameter rx.
* Currently used are the following 3 subcommands:
* 0x0: Read the Next Spool File Buffer (Data Record)
* 0x28: Position a Spool File to the Designated Record
* 0xfff: Retrieve Next File Descriptor
*
* For subcommands 0x0 and 0xfff, the value of the first parameter is
* a virtual address of a memory buffer and needs virtual to physical
* address translation. For other subcommands the rx parameter is not
* a virtual address.
*/
int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode)
{
diag_stat_inc(DIAG_STAT_X014);
switch (subcode) {
case 0x0:
case 0xfff:
rx = virt_to_phys((void *)rx);
break;
default:
/* Do nothing */
break;
}
return diag_amode31_ops.diag14(rx, ry1, subcode);
}
EXPORT_SYMBOL(diag14);
#define DIAG204_BUSY_RC 8
static inline int __diag204(unsigned long *subcode, unsigned long size, void *addr)
{
union register_pair rp = { .even = *subcode, .odd = size };
asm volatile(
" diag %[addr],%[rp],0x204\n"
"0: nopr %%r7\n"
EX_TABLE(0b,0b)
: [rp] "+&d" (rp.pair) : [addr] "d" (addr) : "memory");
*subcode = rp.even;
return rp.odd;
}
/**
* diag204() - Issue diagnose 204 call.
* @subcode: Subcode of diagnose 204 to be executed.
* @size: Size of area in pages which @area points to, if given.
* @addr: Vmalloc'ed memory area where the result is written to.
*
* Execute diagnose 204 with the given subcode and write the result to the
* memory area specified with @addr. For subcodes which do not write a
* result to memory both @size and @addr must be zero. If @addr is
* specified it must be page aligned and must have been allocated with
* vmalloc(). Conversion to real / physical addresses will be handled by
* this function if required.
*/
int diag204(unsigned long subcode, unsigned long size, void *addr)
{
if (addr) {
if (WARN_ON_ONCE(!is_vmalloc_addr(addr)))
return -EINVAL;
if (WARN_ON_ONCE(!IS_ALIGNED((unsigned long)addr, PAGE_SIZE)))
return -EINVAL;
}
if ((subcode & DIAG204_SUBCODE_MASK) == DIAG204_SUBC_STIB4)
addr = (void *)pfn_to_phys(vmalloc_to_pfn(addr));
diag_stat_inc(DIAG_STAT_X204);
size = __diag204(&subcode, size, addr);
if (subcode == DIAG204_BUSY_RC)
return -EBUSY;
else if (subcode)
return -EOPNOTSUPP;
return size;
}
EXPORT_SYMBOL(diag204);
/*
* Diagnose 210: Get information about a virtual device
*/
int diag210(struct diag210 *addr)
{
static DEFINE_SPINLOCK(diag210_lock);
unsigned long flags;
int ccode;
spin_lock_irqsave(&diag210_lock, flags);
*__diag210_tmp_amode31 = *addr;
diag_stat_inc(DIAG_STAT_X210);
ccode = diag_amode31_ops.diag210(__diag210_tmp_amode31);
*addr = *__diag210_tmp_amode31;
spin_unlock_irqrestore(&diag210_lock, flags);
return ccode;
}
EXPORT_SYMBOL(diag210);
/*
* Diagnose 8C: Access 3270 Display Device Information
*/
int diag8c(struct diag8c *addr, struct ccw_dev_id *devno)
{
static DEFINE_SPINLOCK(diag8c_lock);
unsigned long flags;
int ccode;
spin_lock_irqsave(&diag8c_lock, flags);
diag_stat_inc(DIAG_STAT_X08C);
ccode = diag_amode31_ops.diag8c(__diag8c_tmp_amode31, devno, sizeof(*addr));
*addr = *__diag8c_tmp_amode31;
spin_unlock_irqrestore(&diag8c_lock, flags);
return ccode;
}
EXPORT_SYMBOL(diag8c);
int diag224(void *ptr)
{
unsigned long addr = __pa(ptr);
int rc = -EOPNOTSUPP;
diag_stat_inc(DIAG_STAT_X224);
asm volatile("\n"
" diag %[type],%[addr],0x224\n"
"0: lhi %[rc],0\n"
"1:\n"
EX_TABLE(0b,1b)
: [rc] "+d" (rc)
, "=m" (*(struct { char buf[PAGE_SIZE]; } *)ptr)
: [type] "d" (0), [addr] "d" (addr));
return rc;
}
EXPORT_SYMBOL(diag224);
/*
* Diagnose 26C: Access Certain System Information
*/
int diag26c(void *req, void *resp, enum diag26c_sc subcode)
{
diag_stat_inc(DIAG_STAT_X26C);
return diag_amode31_ops.diag26c(virt_to_phys(req), virt_to_phys(resp), subcode);
}
EXPORT_SYMBOL(diag26c);