mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
synced 2025-12-22 09:12:24 +03:00
385baa8eec
In order to conform upstream path, we migrated GPU firmwares to /lib/firmware/nvidia* for l4t. Search the GPU fw from both /lib/firmware/nvidia/* and /lib/firmware/*. Bug 2975694 Signed-off-by: shaochunk <shaochunk@nvidia.com> Change-Id: I6c3cadbabd3291d75ecacd8fbb0de80d23566494 (cherry picked from commit 92d0afc571fabbdc144fa25a18931d9250fd78bf) Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2934925 GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
134 lines
3.6 KiB
C
134 lines
3.6 KiB
C
/*
|
|
* Copyright (c) 2017-2023, NVIDIA CORPORATION. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <linux/firmware.h>
|
|
|
|
#include <nvgpu/kmem.h>
|
|
#include <nvgpu/bug.h>
|
|
#include <nvgpu/firmware.h>
|
|
#include <nvgpu/gk20a.h>
|
|
#include <nvgpu/string.h>
|
|
|
|
#include "platform_gk20a.h"
|
|
#include "os_linux.h"
|
|
|
|
static const struct firmware *do_request_firmware(struct device *dev,
|
|
const char *prefix, const char *fw_name, u32 flags)
|
|
{
|
|
const struct firmware *fw;
|
|
char *fw_path = NULL;
|
|
int path_len, err;
|
|
|
|
if (prefix) {
|
|
path_len = strlen(prefix) + strlen(fw_name);
|
|
path_len += 2; /* for the path separator and zero terminator*/
|
|
|
|
fw_path = nvgpu_kzalloc(get_gk20a(dev),
|
|
sizeof(*fw_path) * path_len);
|
|
if (!fw_path)
|
|
return NULL;
|
|
|
|
(void) sprintf(fw_path, "%s/%s", prefix, fw_name);
|
|
fw_name = fw_path;
|
|
}
|
|
|
|
if (flags & NVGPU_REQUEST_FIRMWARE_NO_WARN)
|
|
err = request_firmware_direct(&fw, fw_name, dev);
|
|
else
|
|
err = request_firmware(&fw, fw_name, dev);
|
|
|
|
nvgpu_kfree(get_gk20a(dev), fw_path);
|
|
if (err)
|
|
return NULL;
|
|
return fw;
|
|
}
|
|
|
|
/* This is a simple wrapper around request_firmware that takes 'fw_name' and
|
|
* applies an IP specific relative path prefix to it. The caller is
|
|
* responsible for calling nvgpu_release_firmware later. */
|
|
struct nvgpu_firmware *nvgpu_request_firmware(struct gk20a *g,
|
|
const char *fw_name,
|
|
u32 flags)
|
|
{
|
|
struct device *dev = dev_from_gk20a(g);
|
|
struct nvgpu_firmware *fw;
|
|
const struct firmware *linux_fw = NULL;
|
|
char *prefix_path = NULL;
|
|
int prefix_len = 0;
|
|
|
|
/* current->fs is NULL when calling from SYS_EXIT.
|
|
Add a check here to prevent crash in request_firmware */
|
|
if (!current->fs || !fw_name)
|
|
return NULL;
|
|
|
|
fw = nvgpu_kzalloc(g, sizeof(*fw));
|
|
if (!fw)
|
|
return NULL;
|
|
|
|
/* Search GPU firmware under /lib/firmware/nvidia */
|
|
prefix_len = strlen("nvidia") + strlen(g->name);
|
|
prefix_len += 2; /* for the path separator and zero terminator */
|
|
prefix_path = nvgpu_kzalloc(g, sizeof(*prefix_path) * prefix_len);
|
|
if (prefix_path) {
|
|
(void) snprintf(prefix_path, prefix_len,
|
|
"%s/%s", "nvidia", g->name);
|
|
linux_fw = do_request_firmware(dev,
|
|
prefix_path, fw_name, NVGPU_REQUEST_FIRMWARE_NO_WARN);
|
|
nvgpu_kfree(g, prefix_path);
|
|
}
|
|
|
|
if (!linux_fw)
|
|
linux_fw = do_request_firmware(dev, g->name, fw_name, flags);
|
|
|
|
#ifdef CONFIG_TEGRA_GK20A
|
|
/* TO BE REMOVED - Support loading from legacy SOC specific path. */
|
|
if (!linux_fw && !(flags & NVGPU_REQUEST_FIRMWARE_NO_SOC)) {
|
|
struct gk20a_platform *platform = gk20a_get_platform(dev);
|
|
linux_fw = do_request_firmware(dev,
|
|
platform->soc_name, fw_name, flags);
|
|
}
|
|
#endif
|
|
|
|
if (!linux_fw)
|
|
goto err;
|
|
|
|
fw->data = nvgpu_kmalloc(g, linux_fw->size);
|
|
if (!fw->data)
|
|
goto err_release;
|
|
|
|
nvgpu_memcpy((u8 *)fw->data, (u8 *)linux_fw->data, linux_fw->size);
|
|
fw->size = linux_fw->size;
|
|
|
|
release_firmware(linux_fw);
|
|
|
|
return fw;
|
|
|
|
err_release:
|
|
release_firmware(linux_fw);
|
|
err:
|
|
nvgpu_kfree(g, fw);
|
|
return NULL;
|
|
}
|
|
|
|
void nvgpu_release_firmware(struct gk20a *g, struct nvgpu_firmware *fw)
|
|
{
|
|
if(!fw)
|
|
return;
|
|
|
|
nvgpu_kfree(g, fw->data);
|
|
nvgpu_kfree(g, fw);
|
|
}
|