diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | 61 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 12 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c | 99 |
5 files changed, 162 insertions, 16 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c index ffeb20f11c07..43d8ed7dbd00 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c @@ -38,6 +38,7 @@ #include <drm/amdgpu_drm.h> #include <linux/dma-buf.h> #include <linux/dma-fence-array.h> +#include <linux/pci-p2pdma.h> /** * amdgpu_gem_prime_vmap - &dma_buf_ops.vmap implementation @@ -179,6 +180,9 @@ static int amdgpu_dma_buf_attach(struct dma_buf *dmabuf, struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); int r; + if (pci_p2pdma_distance_many(adev->pdev, &attach->dev, 1, true) < 0) + attach->peer2peer = false; + if (attach->dev->driver == adev->dev->driver) return 0; @@ -272,14 +276,21 @@ static struct sg_table *amdgpu_dma_buf_map(struct dma_buf_attachment *attach, struct dma_buf *dma_buf = attach->dmabuf; struct drm_gem_object *obj = dma_buf->priv; struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj); + struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); struct sg_table *sgt; long r; if (!bo->pin_count) { - /* move buffer into GTT */ + /* move buffer into GTT or VRAM */ struct ttm_operation_ctx ctx = { false, false }; + unsigned domains = AMDGPU_GEM_DOMAIN_GTT; - amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT); + if (bo->preferred_domains & AMDGPU_GEM_DOMAIN_VRAM && + attach->peer2peer) { + bo->flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED; + domains |= AMDGPU_GEM_DOMAIN_VRAM; + } + amdgpu_bo_placement_from_domain(bo, domains); r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx); if (r) return ERR_PTR(r); @@ -289,20 +300,34 @@ static struct sg_table *amdgpu_dma_buf_map(struct dma_buf_attachment *attach, return ERR_PTR(-EBUSY); } - sgt = drm_prime_pages_to_sg(bo->tbo.ttm->pages, bo->tbo.num_pages); - if (IS_ERR(sgt)) - return sgt; - - if (!dma_map_sg_attrs(attach->dev, sgt->sgl, sgt->nents, dir, - DMA_ATTR_SKIP_CPU_SYNC)) - goto error_free; + switch (bo->tbo.mem.mem_type) { + case TTM_PL_TT: + sgt = drm_prime_pages_to_sg(bo->tbo.ttm->pages, + bo->tbo.num_pages); + if (IS_ERR(sgt)) + return sgt; + + if (!dma_map_sg_attrs(attach->dev, sgt->sgl, sgt->nents, dir, + DMA_ATTR_SKIP_CPU_SYNC)) + goto error_free; + break; + + case TTM_PL_VRAM: + r = amdgpu_vram_mgr_alloc_sgt(adev, &bo->tbo.mem, attach->dev, + dir, &sgt); + if (r) + return ERR_PTR(r); + break; + default: + return ERR_PTR(-EINVAL); + } return sgt; error_free: sg_free_table(sgt); kfree(sgt); - return ERR_PTR(-ENOMEM); + return ERR_PTR(-EBUSY); } /** @@ -318,9 +343,18 @@ static void amdgpu_dma_buf_unmap(struct dma_buf_attachment *attach, struct sg_table *sgt, enum dma_data_direction dir) { - dma_unmap_sg(attach->dev, sgt->sgl, sgt->nents, dir); - sg_free_table(sgt); - kfree(sgt); + struct dma_buf *dma_buf = attach->dmabuf; + struct drm_gem_object *obj = dma_buf->priv; + struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj); + struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); + + if (sgt->sgl->page_link) { + dma_unmap_sg(attach->dev, sgt->sgl, sgt->nents, dir); + sg_free_table(sgt); + kfree(sgt); + } else { + amdgpu_vram_mgr_free_sgt(adev, attach->dev, dir, sgt); + } } /** @@ -514,6 +548,7 @@ amdgpu_dma_buf_move_notify(struct dma_buf_attachment *attach) } static const struct dma_buf_attach_ops amdgpu_dma_buf_attach_ops = { + .allow_peer2peer = true, .move_notify = amdgpu_dma_buf_move_notify }; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c index ba1bb95a3cf9..0e8018c9aa8e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c @@ -856,7 +856,7 @@ void amdgpu_add_thermal_controller(struct amdgpu_device *adev) const char *name = pp_lib_thermal_controller_names[controller->ucType]; info.addr = controller->ucI2cAddress >> 1; strlcpy(info.type, name, sizeof(info.type)); - i2c_new_device(&adev->pm.i2c_bus->adapter, &info); + i2c_new_client_device(&adev->pm.i2c_bus->adapter, &info); } } else { DRM_INFO("Unknown thermal controller type %d at 0x%02x %s fan control\n", diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c index 4277125a79ee..e42608115c99 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c @@ -29,6 +29,7 @@ #include <linux/module.h> #include <linux/pagemap.h> #include <linux/pci.h> +#include <linux/dma-buf.h> #include <drm/amdgpu_drm.h> #include <drm/drm_debugfs.h> @@ -854,7 +855,8 @@ static int amdgpu_debugfs_gem_bo_info(int id, void *ptr, void *data) attachment = READ_ONCE(bo->tbo.base.import_attach); if (attachment) - seq_printf(m, " imported from %p", dma_buf); + seq_printf(m, " imported from %p%s", dma_buf, + attachment->peer2peer ? " P2P" : ""); else if (dma_buf) seq_printf(m, " exported as %p", dma_buf); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h index bd05bbb4878d..6b22dc41ef13 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h @@ -24,8 +24,9 @@ #ifndef __AMDGPU_TTM_H__ #define __AMDGPU_TTM_H__ -#include "amdgpu.h" +#include <linux/dma-direction.h> #include <drm/gpu_scheduler.h> +#include "amdgpu.h" #define AMDGPU_PL_GDS (TTM_PL_PRIV + 0) #define AMDGPU_PL_GWS (TTM_PL_PRIV + 1) @@ -74,6 +75,15 @@ uint64_t amdgpu_gtt_mgr_usage(struct ttm_mem_type_manager *man); int amdgpu_gtt_mgr_recover(struct ttm_mem_type_manager *man); u64 amdgpu_vram_mgr_bo_visible_size(struct amdgpu_bo *bo); +int amdgpu_vram_mgr_alloc_sgt(struct amdgpu_device *adev, + struct ttm_mem_reg *mem, + struct device *dev, + enum dma_data_direction dir, + struct sg_table **sgt); +void amdgpu_vram_mgr_free_sgt(struct amdgpu_device *adev, + struct device *dev, + enum dma_data_direction dir, + struct sg_table *sgt); uint64_t amdgpu_vram_mgr_usage(struct ttm_mem_type_manager *man); uint64_t amdgpu_vram_mgr_vis_usage(struct ttm_mem_type_manager *man); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c index 82a3299e53c0..128a667ed8fa 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c @@ -22,6 +22,7 @@ * Authors: Christian König */ +#include <linux/dma-mapping.h> #include "amdgpu.h" #include "amdgpu_vm.h" #include "amdgpu_atomfirmware.h" @@ -459,6 +460,104 @@ static void amdgpu_vram_mgr_del(struct ttm_mem_type_manager *man, } /** + * amdgpu_vram_mgr_alloc_sgt - allocate and fill a sg table + * + * @adev: amdgpu device pointer + * @mem: TTM memory object + * @dev: the other device + * @dir: dma direction + * @sgt: resulting sg table + * + * Allocate and fill a sg table from a VRAM allocation. + */ +int amdgpu_vram_mgr_alloc_sgt(struct amdgpu_device *adev, + struct ttm_mem_reg *mem, + struct device *dev, + enum dma_data_direction dir, + struct sg_table **sgt) +{ + struct drm_mm_node *node; + struct scatterlist *sg; + int num_entries = 0; + unsigned int pages; + int i, r; + + *sgt = kmalloc(sizeof(*sg), GFP_KERNEL); + if (!*sgt) + return -ENOMEM; + + for (pages = mem->num_pages, node = mem->mm_node; + pages; pages -= node->size, ++node) + ++num_entries; + + r = sg_alloc_table(*sgt, num_entries, GFP_KERNEL); + if (r) + goto error_free; + + for_each_sg((*sgt)->sgl, sg, num_entries, i) + sg->length = 0; + + node = mem->mm_node; + for_each_sg((*sgt)->sgl, sg, num_entries, i) { + phys_addr_t phys = (node->start << PAGE_SHIFT) + + adev->gmc.aper_base; + size_t size = node->size << PAGE_SHIFT; + dma_addr_t addr; + + ++node; + addr = dma_map_resource(dev, phys, size, dir, + DMA_ATTR_SKIP_CPU_SYNC); + r = dma_mapping_error(dev, addr); + if (r) + goto error_unmap; + + sg_set_page(sg, NULL, size, 0); + sg_dma_address(sg) = addr; + sg_dma_len(sg) = size; + } + return 0; + +error_unmap: + for_each_sg((*sgt)->sgl, sg, num_entries, i) { + if (!sg->length) + continue; + + dma_unmap_resource(dev, sg->dma_address, + sg->length, dir, + DMA_ATTR_SKIP_CPU_SYNC); + } + sg_free_table(*sgt); + +error_free: + kfree(*sgt); + return r; +} + +/** + * amdgpu_vram_mgr_alloc_sgt - allocate and fill a sg table + * + * @adev: amdgpu device pointer + * @sgt: sg table to free + * + * Free a previously allocate sg table. + */ +void amdgpu_vram_mgr_free_sgt(struct amdgpu_device *adev, + struct device *dev, + enum dma_data_direction dir, + struct sg_table *sgt) +{ + struct scatterlist *sg; + int i; + + for_each_sg(sgt->sgl, sg, sgt->nents, i) + dma_unmap_resource(dev, sg->dma_address, + sg->length, dir, + DMA_ATTR_SKIP_CPU_SYNC); + sg_free_table(sgt); + kfree(sgt); +} + +/** * amdgpu_vram_mgr_usage - how many bytes are used in this domain * * @man: TTM memory type manager |