From 046fdb2a595e1d78847fde6b625f94537b0ff365 Mon Sep 17 00:00:00 2001 From: Alexandre Courbot Date: Mon, 18 Jan 2016 15:07:09 +0900 Subject: [PATCH] drm/nouveau/core: add firmware handling functions Add two functions nvkm_firmware_get() and nvkm_firmware_put() to load a firmware file and free its resources, respectively. Since firmware files are becoming a necessity for new GPUs, and their location has been standardized to nvidia/chip/, this will prevent duplicate and error-prone name-generation code. Signed-off-by: Alexandre Courbot Signed-off-by: Ben Skeggs --- .../drm/nouveau/include/nvkm/core/firmware.h | 11 ++++ drivers/gpu/drm/nouveau/nvkm/core/Kbuild | 1 + drivers/gpu/drm/nouveau/nvkm/core/firmware.c | 61 +++++++++++++++++++ 3 files changed, 73 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/include/nvkm/core/firmware.h create mode 100644 drivers/gpu/drm/nouveau/nvkm/core/firmware.c diff --git a/drivers/gpu/drm/nouveau/include/nvkm/core/firmware.h b/drivers/gpu/drm/nouveau/include/nvkm/core/firmware.h new file mode 100644 index 000000000000..a626ce378f04 --- /dev/null +++ b/drivers/gpu/drm/nouveau/include/nvkm/core/firmware.h @@ -0,0 +1,11 @@ +#ifndef __NVKM_FIRMWARE_H__ +#define __NVKM_FIRMWARE_H__ + +#include + +int nvkm_firmware_get(struct nvkm_device *device, const char *fwname, + const struct firmware **fw); + +void nvkm_firmware_put(const struct firmware *fw); + +#endif diff --git a/drivers/gpu/drm/nouveau/nvkm/core/Kbuild b/drivers/gpu/drm/nouveau/nvkm/core/Kbuild index 7f66963f305c..86a31a8e1e51 100644 --- a/drivers/gpu/drm/nouveau/nvkm/core/Kbuild +++ b/drivers/gpu/drm/nouveau/nvkm/core/Kbuild @@ -2,6 +2,7 @@ nvkm-y := nvkm/core/client.o nvkm-y += nvkm/core/engine.o nvkm-y += nvkm/core/enum.o nvkm-y += nvkm/core/event.o +nvkm-y += nvkm/core/firmware.o nvkm-y += nvkm/core/gpuobj.o nvkm-y += nvkm/core/ioctl.o nvkm-y += nvkm/core/memory.o diff --git a/drivers/gpu/drm/nouveau/nvkm/core/firmware.c b/drivers/gpu/drm/nouveau/nvkm/core/firmware.c new file mode 100644 index 000000000000..34ecd4a7e0c1 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/core/firmware.c @@ -0,0 +1,61 @@ +/* + * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ +#include + +/** + * nvkm_firmware_get - load firmware from the official nvidia/chip/ directory + * @device device that will use that firmware + * @fwname name of firmware file to load + * @fw firmware structure to load to + * + * Use this function to load firmware files in the form nvidia/chip/fwname.bin. + * Firmware files released by NVIDIA will always follow this format. + */ +int +nvkm_firmware_get(struct nvkm_device *device, const char *fwname, + const struct firmware **fw) +{ + char f[64]; + char cname[16]; + int i; + + /* Convert device name to lowercase */ + strncpy(cname, device->chip->name, sizeof(cname)); + cname[sizeof(cname) - 1] = '\0'; + i = strlen(cname); + while (i) { + --i; + cname[i] = tolower(cname[i]); + } + + snprintf(f, sizeof(f), "nvidia/%s/%s.bin", cname, fwname); + return request_firmware(fw, f, device->dev); +} + +/** + * nvkm_firmware_put - release firmware loaded with nvkm_firmware_get + */ +void +nvkm_firmware_put(const struct firmware *fw) +{ + release_firmware(fw); +} -- 2.39.5