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/* arch/arm/mach-msm/smd_debug.c
*
* Copyright (C) 2007 Google, Inc.
* Author: Brian Swetland <swetland@google.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/debugfs.h>
#include <linux/list.h>
#include <mach/msm_iomap.h>
#include "smd_private.h"
#if defined(CONFIG_DEBUG_FS)
static char *chstate(unsigned n)
{
switch (n) {
case SMD_SS_CLOSED:
return "CLOSED";
case SMD_SS_OPENING:
return "OPENING";
case SMD_SS_OPENED:
return "OPENED";
case SMD_SS_FLUSHING:
return "FLUSHING";
case SMD_SS_CLOSING:
return "CLOSING";
case SMD_SS_RESET:
return "RESET";
case SMD_SS_RESET_OPENING:
return "ROPENING";
default:
return "UNKNOWN";
}
}
static int dump_ch(char *buf, int max, struct smd_channel *ch)
{
volatile struct smd_half_channel *s = ch->send;
volatile struct smd_half_channel *r = ch->recv;
return scnprintf(
buf, max,
"ch%02d:"
" %8s(%05d/%05d) %c%c%c%c%c%c%c <->"
" %8s(%05d/%05d) %c%c%c%c%c%c%c '%s'\n", ch->n,
chstate(s->state), s->tail, s->head,
s->fDSR ? 'D' : 'd',
s->fCTS ? 'C' : 'c',
s->fCD ? 'C' : 'c',
s->fRI ? 'I' : 'i',
s->fHEAD ? 'W' : 'w',
s->fTAIL ? 'R' : 'r',
s->fSTATE ? 'S' : 's',
chstate(r->state), r->tail, r->head,
r->fDSR ? 'D' : 'd',
r->fCTS ? 'R' : 'r',
r->fCD ? 'C' : 'c',
r->fRI ? 'I' : 'i',
r->fHEAD ? 'W' : 'w',
r->fTAIL ? 'R' : 'r',
r->fSTATE ? 'S' : 's',
ch->name
);
}
static int debug_read_stat(char *buf, int max)
{
char *msg;
int i = 0;
msg = smem_find(ID_DIAG_ERR_MSG, SZ_DIAG_ERR_MSG);
if (raw_smsm_get_state(SMSM_STATE_MODEM) & SMSM_RESET)
i += scnprintf(buf + i, max - i,
"smsm: ARM9 HAS CRASHED\n");
i += scnprintf(buf + i, max - i, "smsm: a9: %08x a11: %08x\n",
raw_smsm_get_state(SMSM_STATE_MODEM),
raw_smsm_get_state(SMSM_STATE_APPS));
#ifdef CONFIG_ARCH_MSM_SCORPION
i += scnprintf(buf + i, max - i, "smsm dem: apps: %08x modem: %08x "
"qdsp6: %08x power: %08x time: %08x\n",
raw_smsm_get_state(SMSM_STATE_APPS_DEM),
raw_smsm_get_state(SMSM_STATE_MODEM_DEM),
raw_smsm_get_state(SMSM_STATE_QDSP6_DEM),
raw_smsm_get_state(SMSM_STATE_POWER_MASTER_DEM),
raw_smsm_get_state(SMSM_STATE_TIME_MASTER_DEM));
#endif
if (msg) {
msg[SZ_DIAG_ERR_MSG - 1] = 0;
i += scnprintf(buf + i, max - i, "diag: '%s'\n", msg);
}
return i;
}
static int debug_read_mem(char *buf, int max)
{
unsigned n;
struct smem_shared *shared = (void *) MSM_SHARED_RAM_BASE;
struct smem_heap_entry *toc = shared->heap_toc;
int i = 0;
i += scnprintf(buf + i, max - i,
"heap: init=%d free=%d remain=%d\n",
shared->heap_info.initialized,
shared->heap_info.free_offset,
shared->heap_info.heap_remaining);
for (n = 0; n < SMEM_NUM_ITEMS; n++) {
if (toc[n].allocated == 0)
continue;
i += scnprintf(buf + i, max - i,
"%04d: offset %08x size %08x\n",
n, toc[n].offset, toc[n].size);
}
return i;
}
static int debug_read_ch(char *buf, int max)
{
struct smd_channel *ch;
unsigned long flags;
int i = 0;
spin_lock_irqsave(&smd_lock, flags);
list_for_each_entry(ch, &smd_ch_list_dsp, ch_list)
i += dump_ch(buf + i, max - i, ch);
list_for_each_entry(ch, &smd_ch_list_modem, ch_list)
i += dump_ch(buf + i, max - i, ch);
list_for_each_entry(ch, &smd_ch_closed_list, ch_list)
i += dump_ch(buf + i, max - i, ch);
spin_unlock_irqrestore(&smd_lock, flags);
return i;
}
static int debug_read_version(char *buf, int max)
{
struct smem_shared *shared = (void *) MSM_SHARED_RAM_BASE;
unsigned version = shared->version[VERSION_MODEM];
return sprintf(buf, "%d.%d\n", version >> 16, version & 0xffff);
}
static int debug_read_build_id(char *buf, int max)
{
unsigned size;
void *data;
data = smem_item(SMEM_HW_SW_BUILD_ID, &size);
if (!data)
return 0;
if (size >= max)
size = max;
memcpy(buf, data, size);
return size;
}
static int debug_read_alloc_tbl(char *buf, int max)
{
struct smd_alloc_elm *shared;
int n, i = 0;
shared = smem_find(ID_CH_ALLOC_TBL, sizeof(*shared) * 64);
for (n = 0; n < 64; n++) {
if (shared[n].ref_count == 0)
continue;
i += scnprintf(buf + i, max - i,
"%03d: %-20s cid=%02d type=%03d "
"kind=%02d ref_count=%d\n",
n, shared[n].name, shared[n].cid,
shared[n].ctype & 0xff,
(shared[n].ctype >> 8) & 0xf,
shared[n].ref_count);
}
return i;
}
#define DEBUG_BUFMAX 4096
static char debug_buffer[DEBUG_BUFMAX];
static ssize_t debug_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
int (*fill)(char *buf, int max) = file->private_data;
int bsize = fill(debug_buffer, DEBUG_BUFMAX);
return simple_read_from_buffer(buf, count, ppos, debug_buffer, bsize);
}
static const struct file_operations debug_ops = {
.read = debug_read,
.open = simple_open,
.llseek = default_llseek,
};
static void debug_create(const char *name, umode_t mode,
struct dentry *dent,
int (*fill)(char *buf, int max))
{
debugfs_create_file(name, mode, dent, fill, &debug_ops);
}
int __init smd_debugfs_init(void)
{
struct dentry *dent;
dent = debugfs_create_dir("smd", 0);
if (IS_ERR(dent))
return 1;
debug_create("ch", 0444, dent, debug_read_ch);
debug_create("stat", 0444, dent, debug_read_stat);
debug_create("mem", 0444, dent, debug_read_mem);
debug_create("version", 0444, dent, debug_read_version);
debug_create("tbl", 0444, dent, debug_read_alloc_tbl);
debug_create("build", 0444, dent, debug_read_build_id);
return 0;
}
#endif
#define MAX_NUM_SLEEP_CLIENTS 64
#define MAX_SLEEP_NAME_LEN
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