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Reapply "drm/nouveau/firmware: Fix SG_DEBUG error with nvkm_firmware_ctor() #314

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merged 1 commit into from
Jul 9, 2024
Merged

Reapply "drm/nouveau/firmware: Fix SG_DEBUG error with nvkm_firmware_ctor() #314

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19 changes: 12 additions & 7 deletions drivers/gpu/drm/nouveau/nvkm/core/firmware.c
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Original file line number Diff line number Diff line change
Expand Up @@ -187,7 +187,9 @@ nvkm_firmware_dtor(struct nvkm_firmware *fw)
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);
dma_unmap_single(fw->device->dev, fw->phys, sg_dma_len(&fw->mem.sgl),
DMA_TO_DEVICE);
kfree(fw->img);
break;
default:
WARN_ON(1);
Expand All @@ -211,14 +213,17 @@ nvkm_firmware_ctor(const struct nvkm_firmware_func *func, const char *name,
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;
fw->img = kmalloc(len, GFP_KERNEL);
if (!fw->img)
return -ENOMEM;

memcpy(fw->img, src, fw->len);
fw->phys = dma_map_single(fw->device->dev, fw->img, len, DMA_TO_DEVICE);
if (dma_mapping_error(fw->device->dev, fw->phys)) {
kfree(fw->img);
return -EFAULT;
}

sg_init_one(&fw->mem.sgl, fw->img, len);
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