mirror of
https://gitee.com/bianbu-linux/linux-6.6
synced 2025-07-22 01:43:37 -04:00
85630469d2
Change all files to add SPDX license identifiers and remove license text. This is only an administrative change, there is no change in actual license or copyright for any file. Signed-off-by: Lior David <liord@codeaurora.org> Signed-off-by: Maya Erez <merez@codeaurora.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
115 lines
2.6 KiB
C
115 lines
2.6 KiB
C
// SPDX-License-Identifier: ISC
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/*
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* Copyright (c) 2015,2017 Qualcomm Atheros, Inc.
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* Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
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*/
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#include "wil6210.h"
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#include <linux/devcoredump.h>
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static int wil_fw_get_crash_dump_bounds(struct wil6210_priv *wil,
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u32 *out_dump_size, u32 *out_host_min)
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{
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int i;
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const struct fw_map *map;
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u32 host_min, host_max, tmp_max;
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if (!out_dump_size)
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return -EINVAL;
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/* calculate the total size of the unpacked crash dump */
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BUILD_BUG_ON(ARRAY_SIZE(fw_mapping) == 0);
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map = &fw_mapping[0];
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host_min = map->host;
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host_max = map->host + (map->to - map->from);
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for (i = 1; i < ARRAY_SIZE(fw_mapping); i++) {
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map = &fw_mapping[i];
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if (!map->crash_dump)
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continue;
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if (map->host < host_min)
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host_min = map->host;
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tmp_max = map->host + (map->to - map->from);
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if (tmp_max > host_max)
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host_max = tmp_max;
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}
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*out_dump_size = host_max - host_min;
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if (out_host_min)
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*out_host_min = host_min;
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return 0;
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}
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int wil_fw_copy_crash_dump(struct wil6210_priv *wil, void *dest, u32 size)
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{
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int i, rc;
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const struct fw_map *map;
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void *data;
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u32 host_min, dump_size, offset, len;
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if (wil_fw_get_crash_dump_bounds(wil, &dump_size, &host_min)) {
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wil_err(wil, "fail to obtain crash dump size\n");
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return -EINVAL;
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}
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if (dump_size > size) {
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wil_err(wil, "not enough space for dump. Need %d have %d\n",
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dump_size, size);
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return -EINVAL;
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}
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rc = wil_mem_access_lock(wil);
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if (rc)
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return rc;
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/* copy to crash dump area */
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for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) {
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map = &fw_mapping[i];
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if (!map->crash_dump)
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continue;
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data = (void * __force)wil->csr + HOSTADDR(map->host);
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len = map->to - map->from;
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offset = map->host - host_min;
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wil_dbg_misc(wil,
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"fw_copy_crash_dump: - dump %s, size %d, offset %d\n",
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fw_mapping[i].name, len, offset);
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wil_memcpy_fromio_32((void * __force)(dest + offset),
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(const void __iomem * __force)data, len);
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}
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wil_mem_access_unlock(wil);
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return 0;
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}
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void wil_fw_core_dump(struct wil6210_priv *wil)
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{
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void *fw_dump_data;
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u32 fw_dump_size;
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if (wil_fw_get_crash_dump_bounds(wil, &fw_dump_size, NULL)) {
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wil_err(wil, "fail to get fw dump size\n");
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return;
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}
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fw_dump_data = vzalloc(fw_dump_size);
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if (!fw_dump_data)
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return;
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if (wil_fw_copy_crash_dump(wil, fw_dump_data, fw_dump_size)) {
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vfree(fw_dump_data);
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return;
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}
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/* fw_dump_data will be free in device coredump release function
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* after 5 min
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*/
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dev_coredumpv(wil_to_dev(wil), fw_dump_data, fw_dump_size, GFP_KERNEL);
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wil_info(wil, "fw core dumped, size %d bytes\n", fw_dump_size);
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}
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