forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
122 lines
2.8 KiB
122 lines
2.8 KiB
// SPDX-License-Identifier: ISC |
|
/* |
|
* Copyright (c) 2015,2017 Qualcomm Atheros, Inc. |
|
* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved. |
|
*/ |
|
|
|
#include "wil6210.h" |
|
#include <linux/devcoredump.h> |
|
|
|
static int wil_fw_get_crash_dump_bounds(struct wil6210_priv *wil, |
|
u32 *out_dump_size, u32 *out_host_min) |
|
{ |
|
int i; |
|
const struct fw_map *map; |
|
u32 host_min, host_max, tmp_max; |
|
|
|
if (!out_dump_size) |
|
return -EINVAL; |
|
|
|
/* calculate the total size of the unpacked crash dump */ |
|
BUILD_BUG_ON(ARRAY_SIZE(fw_mapping) == 0); |
|
map = &fw_mapping[0]; |
|
host_min = map->host; |
|
host_max = map->host + (map->to - map->from); |
|
|
|
for (i = 1; i < ARRAY_SIZE(fw_mapping); i++) { |
|
map = &fw_mapping[i]; |
|
|
|
if (!map->crash_dump) |
|
continue; |
|
|
|
if (map->host < host_min) |
|
host_min = map->host; |
|
|
|
tmp_max = map->host + (map->to - map->from); |
|
if (tmp_max > host_max) |
|
host_max = tmp_max; |
|
} |
|
|
|
*out_dump_size = host_max - host_min; |
|
if (out_host_min) |
|
*out_host_min = host_min; |
|
|
|
return 0; |
|
} |
|
|
|
int wil_fw_copy_crash_dump(struct wil6210_priv *wil, void *dest, u32 size) |
|
{ |
|
int i; |
|
const struct fw_map *map; |
|
void *data; |
|
u32 host_min, dump_size, offset, len; |
|
|
|
if (wil_fw_get_crash_dump_bounds(wil, &dump_size, &host_min)) { |
|
wil_err(wil, "fail to obtain crash dump size\n"); |
|
return -EINVAL; |
|
} |
|
|
|
if (dump_size > size) { |
|
wil_err(wil, "not enough space for dump. Need %d have %d\n", |
|
dump_size, size); |
|
return -EINVAL; |
|
} |
|
|
|
down_write(&wil->mem_lock); |
|
|
|
if (test_bit(wil_status_suspending, wil->status) || |
|
test_bit(wil_status_suspended, wil->status)) { |
|
wil_err(wil, |
|
"suspend/resume in progress. cannot copy crash dump\n"); |
|
up_write(&wil->mem_lock); |
|
return -EBUSY; |
|
} |
|
|
|
/* copy to crash dump area */ |
|
for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) { |
|
map = &fw_mapping[i]; |
|
|
|
if (!map->crash_dump) |
|
continue; |
|
|
|
data = (void * __force)wil->csr + HOSTADDR(map->host); |
|
len = map->to - map->from; |
|
offset = map->host - host_min; |
|
|
|
wil_dbg_misc(wil, |
|
"fw_copy_crash_dump: - dump %s, size %d, offset %d\n", |
|
fw_mapping[i].name, len, offset); |
|
|
|
wil_memcpy_fromio_32((void * __force)(dest + offset), |
|
(const void __iomem * __force)data, len); |
|
} |
|
|
|
up_write(&wil->mem_lock); |
|
|
|
return 0; |
|
} |
|
|
|
void wil_fw_core_dump(struct wil6210_priv *wil) |
|
{ |
|
void *fw_dump_data; |
|
u32 fw_dump_size; |
|
|
|
if (wil_fw_get_crash_dump_bounds(wil, &fw_dump_size, NULL)) { |
|
wil_err(wil, "fail to get fw dump size\n"); |
|
return; |
|
} |
|
|
|
fw_dump_data = vzalloc(fw_dump_size); |
|
if (!fw_dump_data) |
|
return; |
|
|
|
if (wil_fw_copy_crash_dump(wil, fw_dump_data, fw_dump_size)) { |
|
vfree(fw_dump_data); |
|
return; |
|
} |
|
/* fw_dump_data will be free in device coredump release function |
|
* after 5 min |
|
*/ |
|
dev_coredumpv(wil_to_dev(wil), fw_dump_data, fw_dump_size, GFP_KERNEL); |
|
wil_info(wil, "fw core dumped, size %d bytes\n", fw_dump_size); |
|
}
|
|
|