From 20e7dce255e96a4d58168cf48e20210146dacf23 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Mon, 28 Oct 2019 13:37:15 +0100 Subject: drm/tegra: Remove memory allocation from Falcon library Having to provide allocator hooks to the Falcon library is somewhat cumbersome and it doesn't give the users of the library a lot of flexibility to deal with allocations. Instead, remove the notion of Falcon "operations" and let drivers deal with the memory allocations themselves. Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/falcon.h | 11 ----------- 1 file changed, 11 deletions(-) (limited to 'drivers/gpu/drm/tegra/falcon.h') diff --git a/drivers/gpu/drm/tegra/falcon.h b/drivers/gpu/drm/tegra/falcon.h index 3d1243217410..92491a1e90df 100644 --- a/drivers/gpu/drm/tegra/falcon.h +++ b/drivers/gpu/drm/tegra/falcon.h @@ -74,15 +74,6 @@ struct falcon_fw_os_header_v1 { u32 data_size; }; -struct falcon; - -struct falcon_ops { - void *(*alloc)(struct falcon *falcon, size_t size, - dma_addr_t *paddr); - void (*free)(struct falcon *falcon, size_t size, - dma_addr_t paddr, void *vaddr); -}; - struct falcon_firmware_section { unsigned long offset; size_t size; @@ -107,8 +98,6 @@ struct falcon { /* Set by falcon client */ struct device *dev; void __iomem *regs; - const struct falcon_ops *ops; - void *data; struct falcon_firmware firmware; }; -- cgit v1.2.3 From d972d6247628054f4a9f05c084a1f52de9df209d Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Mon, 28 Oct 2019 13:37:16 +0100 Subject: drm/tegra: falcon: Clarify address usage Rename paddr -> iova and vaddr -> virt to make it clearer how these addresses are used. This is important for a subsequent patch that makes a distinction between the physical address (physical address of the system memory from the CPU's point of view) and the IOVA (physical address of the system memory from the device's point of view). Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/falcon.c | 14 +++++------ drivers/gpu/drm/tegra/falcon.h | 5 ++-- drivers/gpu/drm/tegra/vic.c | 56 ++++++++++++++++++------------------------ 3 files changed, 34 insertions(+), 41 deletions(-) (limited to 'drivers/gpu/drm/tegra/falcon.h') diff --git a/drivers/gpu/drm/tegra/falcon.c b/drivers/gpu/drm/tegra/falcon.c index a5b25e4ecbd2..56edef06c48e 100644 --- a/drivers/gpu/drm/tegra/falcon.c +++ b/drivers/gpu/drm/tegra/falcon.c @@ -58,17 +58,17 @@ static int falcon_copy_chunk(struct falcon *falcon, static void falcon_copy_firmware_image(struct falcon *falcon, const struct firmware *firmware) { - u32 *firmware_vaddr = falcon->firmware.vaddr; + u32 *virt = falcon->firmware.virt; size_t i; /* copy the whole thing taking into account endianness */ for (i = 0; i < firmware->size / sizeof(u32); i++) - firmware_vaddr[i] = le32_to_cpu(((u32 *)firmware->data)[i]); + virt[i] = le32_to_cpu(((u32 *)firmware->data)[i]); } static int falcon_parse_firmware_image(struct falcon *falcon) { - struct falcon_fw_bin_header_v1 *bin = (void *)falcon->firmware.vaddr; + struct falcon_fw_bin_header_v1 *bin = (void *)falcon->firmware.virt; struct falcon_fw_os_header_v1 *os; /* endian problems would show up right here */ @@ -89,7 +89,7 @@ static int falcon_parse_firmware_image(struct falcon *falcon) return -EINVAL; } - os = falcon->firmware.vaddr + bin->os_header_offset; + os = falcon->firmware.virt + bin->os_header_offset; falcon->firmware.bin_data.size = bin->os_size; falcon->firmware.bin_data.offset = bin->os_data_offset; @@ -138,7 +138,7 @@ int falcon_load_firmware(struct falcon *falcon) int falcon_init(struct falcon *falcon) { - falcon->firmware.vaddr = NULL; + falcon->firmware.virt = NULL; return 0; } @@ -155,7 +155,7 @@ int falcon_boot(struct falcon *falcon) u32 value; int err; - if (!falcon->firmware.vaddr) + if (!falcon->firmware.virt) return -EINVAL; err = readl_poll_timeout(falcon->regs + FALCON_DMACTL, value, @@ -168,7 +168,7 @@ int falcon_boot(struct falcon *falcon) falcon_writel(falcon, 0, FALCON_DMACTL); /* setup the address of the binary data so Falcon can access it later */ - falcon_writel(falcon, (falcon->firmware.paddr + + falcon_writel(falcon, (falcon->firmware.iova + falcon->firmware.bin_data.offset) >> 8, FALCON_DMATRFBASE); diff --git a/drivers/gpu/drm/tegra/falcon.h b/drivers/gpu/drm/tegra/falcon.h index 92491a1e90df..c56ee32d92ee 100644 --- a/drivers/gpu/drm/tegra/falcon.h +++ b/drivers/gpu/drm/tegra/falcon.h @@ -84,8 +84,9 @@ struct falcon_firmware { const struct firmware *firmware; /* Raw firmware data */ - dma_addr_t paddr; - void *vaddr; + dma_addr_t iova; + dma_addr_t phys; + void *virt; size_t size; /* Parsed firmware information */ diff --git a/drivers/gpu/drm/tegra/vic.c b/drivers/gpu/drm/tegra/vic.c index 4345b8054617..9444ba183990 100644 --- a/drivers/gpu/drm/tegra/vic.c +++ b/drivers/gpu/drm/tegra/vic.c @@ -133,9 +133,9 @@ static int vic_boot(struct vic *vic) if (err < 0) return err; - hdr = vic->falcon.firmware.vaddr; + hdr = vic->falcon.firmware.virt; fce_bin_data_offset = *(u32 *)(hdr + VIC_UCODE_FCE_DATA_OFFSET); - hdr = vic->falcon.firmware.vaddr + + hdr = vic->falcon.firmware.virt + *(u32 *)(hdr + VIC_UCODE_FCE_HEADER_OFFSET); fce_ucode_size = *(u32 *)(hdr + FCE_UCODE_SIZE_OFFSET); @@ -143,7 +143,7 @@ static int vic_boot(struct vic *vic) falcon_execute_method(&vic->falcon, VIC_SET_FCE_UCODE_SIZE, fce_ucode_size); falcon_execute_method(&vic->falcon, VIC_SET_FCE_UCODE_OFFSET, - (vic->falcon.firmware.paddr + fce_bin_data_offset) + (vic->falcon.firmware.iova + fce_bin_data_offset) >> 8); err = falcon_wait_idle(&vic->falcon); @@ -225,14 +225,17 @@ static int vic_exit(struct host1x_client *client) host1x_channel_put(vic->channel); host1x_client_iommu_detach(client); - if (client->group) + if (client->group) { + dma_unmap_single(vic->dev, vic->falcon.firmware.phys, + vic->falcon.firmware.size, DMA_TO_DEVICE); tegra_drm_free(tegra, vic->falcon.firmware.size, - vic->falcon.firmware.vaddr, - vic->falcon.firmware.paddr); - else + vic->falcon.firmware.virt, + vic->falcon.firmware.iova); + } else { dma_free_coherent(vic->dev, vic->falcon.firmware.size, - vic->falcon.firmware.vaddr, - vic->falcon.firmware.paddr); + vic->falcon.firmware.virt, + vic->falcon.firmware.iova); + } return 0; } @@ -246,12 +249,12 @@ static int vic_load_firmware(struct vic *vic) { struct host1x_client *client = &vic->client.base; struct tegra_drm *tegra = vic->client.drm; - dma_addr_t phys; + dma_addr_t iova; size_t size; void *virt; int err; - if (vic->falcon.firmware.vaddr) + if (vic->falcon.firmware.virt) return 0; err = falcon_read_firmware(&vic->falcon, vic->config->firmware); @@ -261,17 +264,17 @@ static int vic_load_firmware(struct vic *vic) size = vic->falcon.firmware.size; if (!client->group) { - virt = dma_alloc_coherent(vic->dev, size, &phys, GFP_KERNEL); + virt = dma_alloc_coherent(vic->dev, size, &iova, GFP_KERNEL); - err = dma_mapping_error(vic->dev, phys); + err = dma_mapping_error(vic->dev, iova); if (err < 0) return err; } else { - virt = tegra_drm_alloc(tegra, size, &phys); + virt = tegra_drm_alloc(tegra, size, &iova); } - vic->falcon.firmware.vaddr = virt; - vic->falcon.firmware.paddr = phys; + vic->falcon.firmware.virt = virt; + vic->falcon.firmware.iova = iova; err = falcon_load_firmware(&vic->falcon); if (err < 0) @@ -283,35 +286,24 @@ static int vic_load_firmware(struct vic *vic) * knows what memory pages to flush the cache for. */ if (client->group) { + dma_addr_t phys; + phys = dma_map_single(vic->dev, virt, size, DMA_TO_DEVICE); err = dma_mapping_error(vic->dev, phys); if (err < 0) goto cleanup; - /* - * If the DMA API mapped this through a bounce buffer, the - * dma_sync_single_for_device() call below will not be able - * to flush the caches for the right memory pages. Output a - * big warning in that case so that the DMA mask can be set - * properly and the bounce buffer avoided. - */ - WARN(phys != vic->falcon.firmware.paddr, - "check DMA mask setting for %s\n", dev_name(vic->dev)); + vic->falcon.firmware.phys = phys; } - dma_sync_single_for_device(vic->dev, phys, size, DMA_TO_DEVICE); - - if (client->group) - dma_unmap_single(vic->dev, phys, size, DMA_TO_DEVICE); - return 0; cleanup: if (!client->group) - dma_free_coherent(vic->dev, size, virt, phys); + dma_free_coherent(vic->dev, size, virt, iova); else - tegra_drm_free(tegra, size, virt, phys); + tegra_drm_free(tegra, size, virt, iova); return err; } -- cgit v1.2.3