diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/core/firmware.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/core/firmware.c | 239 |
1 files changed, 239 insertions, 0 deletions
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 0000000000..91fb494d40 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/core/firmware.c @@ -0,0 +1,239 @@ +/* + * 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 <core/device.h> +#include <core/firmware.h> + +#include <subdev/fb.h> +#include <subdev/mmu.h> + +int +nvkm_firmware_load_name(const struct nvkm_subdev *subdev, const char *base, + const char *name, int ver, const struct firmware **pfw) +{ + char path[64]; + int ret; + + snprintf(path, sizeof(path), "%s%s", base, name); + ret = nvkm_firmware_get(subdev, path, ver, pfw); + if (ret < 0) + return ret; + + return 0; +} + +int +nvkm_firmware_load_blob(const struct nvkm_subdev *subdev, const char *base, + const char *name, int ver, struct nvkm_blob *blob) +{ + const struct firmware *fw; + int ret; + + ret = nvkm_firmware_load_name(subdev, base, name, ver, &fw); + if (ret == 0) { + blob->data = kmemdup(fw->data, fw->size, GFP_KERNEL); + blob->size = fw->size; + nvkm_firmware_put(fw); + if (!blob->data) + return -ENOMEM; + } + + return ret; +} + +/** + * nvkm_firmware_get - load firmware from the official nvidia/chip/ directory + * @subdev: subdevice that will use that firmware + * @fwname: name of firmware file to load + * @ver: firmware version 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(const struct nvkm_subdev *subdev, const char *fwname, int ver, + const struct firmware **fw) +{ + struct nvkm_device *device = subdev->device; + 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]); + } + + if (ver != 0) + snprintf(f, sizeof(f), "nvidia/%s/%s-%d.bin", cname, fwname, ver); + else + snprintf(f, sizeof(f), "nvidia/%s/%s.bin", cname, fwname); + + if (!firmware_request_nowarn(fw, f, device->dev)) { + nvkm_debug(subdev, "firmware \"%s\" loaded - %zu byte(s)\n", + f, (*fw)->size); + return 0; + } + + nvkm_debug(subdev, "firmware \"%s\" unavailable\n", f); + return -ENOENT; +} + +/* + * nvkm_firmware_put - release firmware loaded with nvkm_firmware_get + */ +void +nvkm_firmware_put(const struct firmware *fw) +{ + release_firmware(fw); +} + +#define nvkm_firmware_mem(p) container_of((p), struct nvkm_firmware, mem.memory) + +static int +nvkm_firmware_mem_map(struct nvkm_memory *memory, u64 offset, struct nvkm_vmm *vmm, + struct nvkm_vma *vma, void *argv, u32 argc) +{ + struct nvkm_firmware *fw = nvkm_firmware_mem(memory); + struct nvkm_vmm_map map = { + .memory = &fw->mem.memory, + .offset = offset, + .sgl = &fw->mem.sgl, + }; + + if (WARN_ON(fw->func->type != NVKM_FIRMWARE_IMG_DMA)) + return -ENOSYS; + + return nvkm_vmm_map(vmm, vma, argv, argc, &map); +} + +static u64 +nvkm_firmware_mem_size(struct nvkm_memory *memory) +{ + return sg_dma_len(&nvkm_firmware_mem(memory)->mem.sgl); +} + +static u64 +nvkm_firmware_mem_addr(struct nvkm_memory *memory) +{ + return nvkm_firmware_mem(memory)->phys; +} + +static u8 +nvkm_firmware_mem_page(struct nvkm_memory *memory) +{ + return PAGE_SHIFT; +} + +static enum nvkm_memory_target +nvkm_firmware_mem_target(struct nvkm_memory *memory) +{ + if (nvkm_firmware_mem(memory)->device->func->tegra) + return NVKM_MEM_TARGET_NCOH; + + return NVKM_MEM_TARGET_HOST; +} + +static void * +nvkm_firmware_mem_dtor(struct nvkm_memory *memory) +{ + return NULL; +} + +static const struct nvkm_memory_func +nvkm_firmware_mem = { + .dtor = nvkm_firmware_mem_dtor, + .target = nvkm_firmware_mem_target, + .page = nvkm_firmware_mem_page, + .addr = nvkm_firmware_mem_addr, + .size = nvkm_firmware_mem_size, + .map = nvkm_firmware_mem_map, +}; + +void +nvkm_firmware_dtor(struct nvkm_firmware *fw) +{ + struct nvkm_memory *memory = &fw->mem.memory; + + if (!fw->img) + return; + + switch (fw->func->type) { + case NVKM_FIRMWARE_IMG_RAM: + kfree(fw->img); + break; + case NVKM_FIRMWARE_IMG_DMA: + nvkm_memory_unref(&memory); + dma_free_coherent(fw->device->dev, sg_dma_len(&fw->mem.sgl), fw->img, fw->phys); + break; + default: + WARN_ON(1); + break; + } + + fw->img = NULL; +} + +int +nvkm_firmware_ctor(const struct nvkm_firmware_func *func, const char *name, + struct nvkm_device *device, const void *src, int len, struct nvkm_firmware *fw) +{ + fw->func = func; + fw->name = name; + fw->device = device; + fw->len = len; + + switch (fw->func->type) { + case NVKM_FIRMWARE_IMG_RAM: + fw->img = kmemdup(src, fw->len, GFP_KERNEL); + break; + case NVKM_FIRMWARE_IMG_DMA: { + dma_addr_t addr; + + len = ALIGN(fw->len, PAGE_SIZE); + + fw->img = dma_alloc_coherent(fw->device->dev, len, &addr, GFP_KERNEL); + if (fw->img) { + memcpy(fw->img, src, fw->len); + fw->phys = addr; + } + + sg_init_one(&fw->mem.sgl, fw->img, len); + sg_dma_address(&fw->mem.sgl) = fw->phys; + sg_dma_len(&fw->mem.sgl) = len; + } + break; + default: + WARN_ON(1); + return -EINVAL; + } + + if (!fw->img) + return -ENOMEM; + + nvkm_memory_ctor(&nvkm_firmware_mem, &fw->mem.memory); + return 0; +} |