diff options
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_bo.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_ttm.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/ttm/Makefile | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo.c | 124 | ||||
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo_util.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_resource.c | 151 | ||||
| -rw-r--r-- | include/drm/ttm/ttm_bo_api.h | 70 | ||||
| -rw-r--r-- | include/drm/ttm/ttm_bo_driver.h | 189 | ||||
| -rw-r--r-- | include/drm/ttm/ttm_resource.h | 263 |
11 files changed, 446 insertions, 376 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index 43f4966331dd..b36d94f57d42 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -381,7 +381,7 @@ int amdgpu_bo_create_kernel_at(struct amdgpu_device *adev, if (cpu_addr) amdgpu_bo_kunmap(*bo_ptr); - ttm_bo_mem_put(&(*bo_ptr)->tbo, &(*bo_ptr)->tbo.mem); + ttm_resource_free(&(*bo_ptr)->tbo, &(*bo_ptr)->tbo.mem); for (i = 0; i < (*bo_ptr)->placement.num_placement; ++i) { (*bo_ptr)->placements[i].fpfn = offset >> PAGE_SHIFT; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 67d2eef2f9eb..462402fcd1a4 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -578,7 +578,7 @@ static int amdgpu_move_vram_ram(struct ttm_buffer_object *bo, bool evict, /* move BO (in tmp_mem) to new_mem */ r = ttm_bo_move_ttm(bo, ctx, new_mem); out_cleanup: - ttm_bo_mem_put(bo, &tmp_mem); + ttm_resource_free(bo, &tmp_mem); return r; } @@ -625,7 +625,7 @@ static int amdgpu_move_ram_vram(struct ttm_buffer_object *bo, bool evict, goto out_cleanup; } out_cleanup: - ttm_bo_mem_put(bo, &tmp_mem); + ttm_resource_free(bo, &tmp_mem); return r; } @@ -1203,11 +1203,11 @@ int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo) gtt->offset = (u64)tmp.start << PAGE_SHIFT; r = amdgpu_ttm_gart_bind(adev, bo, flags); if (unlikely(r)) { - ttm_bo_mem_put(bo, &tmp); + ttm_resource_free(bo, &tmp); return r; } - ttm_bo_mem_put(bo, &bo->mem); + ttm_resource_free(bo, &bo->mem); bo->mem = tmp; } diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 604a74323696..29d7d7e100f7 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -1191,7 +1191,7 @@ nouveau_bo_move_flipd(struct ttm_buffer_object *bo, bool evict, bool intr, ret = ttm_bo_move_ttm(bo, &ctx, new_reg); out: - ttm_bo_mem_put(bo, &tmp_reg); + ttm_resource_free(bo, &tmp_reg); return ret; } @@ -1227,7 +1227,7 @@ nouveau_bo_move_flips(struct ttm_buffer_object *bo, bool evict, bool intr, goto out; out: - ttm_bo_mem_put(bo, &tmp_reg); + ttm_resource_free(bo, &tmp_reg); return ret; } diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c index 3355b69b13d1..31f4cf211b6a 100644 --- a/drivers/gpu/drm/radeon/radeon_ttm.c +++ b/drivers/gpu/drm/radeon/radeon_ttm.c @@ -271,7 +271,7 @@ static int radeon_move_vram_ram(struct ttm_buffer_object *bo, } r = ttm_bo_move_ttm(bo, &ctx, new_mem); out_cleanup: - ttm_bo_mem_put(bo, &tmp_mem); + ttm_resource_free(bo, &tmp_mem); return r; } @@ -309,7 +309,7 @@ static int radeon_move_ram_vram(struct ttm_buffer_object *bo, goto out_cleanup; } out_cleanup: - ttm_bo_mem_put(bo, &tmp_mem); + ttm_resource_free(bo, &tmp_mem); return r; } diff --git a/drivers/gpu/drm/ttm/Makefile b/drivers/gpu/drm/ttm/Makefile index e54326e6cea4..90c0da88cc98 100644 --- a/drivers/gpu/drm/ttm/Makefile +++ b/drivers/gpu/drm/ttm/Makefile @@ -4,7 +4,8 @@ ttm-y := ttm_memory.o ttm_tt.o ttm_bo.o \ ttm_bo_util.o ttm_bo_vm.o ttm_module.o \ - ttm_execbuf_util.o ttm_page_alloc.o ttm_range_manager.o + ttm_execbuf_util.o ttm_page_alloc.o ttm_range_manager.o \ + ttm_resource.o ttm-$(CONFIG_AGP) += ttm_agp_backend.o ttm-$(CONFIG_DRM_TTM_DMA_PAGE_POOL) += ttm_page_alloc_dma.o diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index ae71c3ab6cc4..55890314316b 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -77,19 +77,6 @@ static inline int ttm_mem_type_from_place(const struct ttm_place *place, return 0; } -void ttm_resource_manager_debug(struct ttm_resource_manager *man, - struct drm_printer *p) -{ - drm_printf(p, " use_type: %d\n", man->use_type); - drm_printf(p, " use_tt: %d\n", man->use_tt); - drm_printf(p, " size: %llu\n", man->size); - drm_printf(p, " available_caching: 0x%08X\n", man->available_caching); - drm_printf(p, " default_caching: 0x%08X\n", man->default_caching); - if (man->func && man->func->debug) - (*man->func->debug)(man, p); -} -EXPORT_SYMBOL(ttm_resource_manager_debug); - static void ttm_bo_mem_space_debug(struct ttm_buffer_object *bo, struct ttm_placement *placement) { @@ -363,7 +350,7 @@ static void ttm_bo_cleanup_memtype_use(struct ttm_buffer_object *bo) ttm_tt_destroy(bo->ttm); bo->ttm = NULL; - ttm_bo_mem_put(bo, &bo->mem); + ttm_resource_free(bo, &bo->mem); } static int ttm_bo_individualize_resv(struct ttm_buffer_object *bo) @@ -678,7 +665,7 @@ static int ttm_bo_evict(struct ttm_buffer_object *bo, if (unlikely(ret)) { if (ret != -ERESTARTSYS) pr_err("Buffer eviction failed\n"); - ttm_bo_mem_put(bo, &evict_mem); + ttm_resource_free(bo, &evict_mem); goto out; } bo->evicted = true; @@ -767,11 +754,11 @@ static int ttm_mem_evict_wait_busy(struct ttm_buffer_object *busy_bo, return r == -EDEADLK ? -EBUSY : r; } -static int ttm_mem_evict_first(struct ttm_bo_device *bdev, - struct ttm_resource_manager *man, - const struct ttm_place *place, - struct ttm_operation_ctx *ctx, - struct ww_acquire_ctx *ticket) +int ttm_mem_evict_first(struct ttm_bo_device *bdev, + struct ttm_resource_manager *man, + const struct ttm_place *place, + struct ttm_operation_ctx *ctx, + struct ww_acquire_ctx *ticket) { struct ttm_buffer_object *bo = NULL, *busy_bo = NULL; bool locked = false; @@ -839,32 +826,6 @@ static int ttm_mem_evict_first(struct ttm_bo_device *bdev, return ret; } -static int ttm_bo_mem_get(struct ttm_buffer_object *bo, - const struct ttm_place *place, - struct ttm_resource *mem) -{ - struct ttm_resource_manager *man = ttm_manager_type(bo->bdev, mem->mem_type); - - mem->mm_node = NULL; - if (!man->func || !man->func->alloc) - return 0; - - return man->func->alloc(man, bo, place, mem); -} - -void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_resource *mem) -{ - struct ttm_resource_manager *man = ttm_manager_type(bo->bdev, mem->mem_type); - - if (!man->func || !man->func->free) - return; - - man->func->free(man, mem); - mem->mm_node = NULL; - mem->mem_type = TTM_PL_SYSTEM; -} -EXPORT_SYMBOL(ttm_bo_mem_put); - /** * Add the last move fence to the BO and reserve a new shared slot. */ @@ -915,7 +876,7 @@ static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo, ticket = dma_resv_locking_ctx(bo->base.resv); do { - ret = ttm_bo_mem_get(bo, place, mem); + ret = ttm_resource_alloc(bo, place, mem); if (likely(!ret)) break; if (unlikely(ret != -ENOSPC)) @@ -1056,7 +1017,7 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo, goto error; type_found = true; - ret = ttm_bo_mem_get(bo, place, mem); + ret = ttm_resource_alloc(bo, place, mem); if (ret == -ENOSPC) continue; if (unlikely(ret)) @@ -1065,7 +1026,7 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo, man = ttm_manager_type(bdev, mem->mem_type); ret = ttm_bo_add_move_fence(bo, man, mem, ctx->no_wait_gpu); if (unlikely(ret)) { - ttm_bo_mem_put(bo, mem); + ttm_resource_free(bo, mem); if (ret == -EBUSY) continue; @@ -1132,7 +1093,7 @@ static int ttm_bo_move_buffer(struct ttm_buffer_object *bo, ret = ttm_bo_handle_move_mem(bo, &mem, false, ctx); out_unlock: if (ret) - ttm_bo_mem_put(bo, &mem); + ttm_resource_free(bo, &mem); return ret; } @@ -1404,52 +1365,6 @@ int ttm_bo_create(struct ttm_bo_device *bdev, } EXPORT_SYMBOL(ttm_bo_create); -int ttm_resource_manager_force_list_clean(struct ttm_bo_device *bdev, - struct ttm_resource_manager *man) -{ - struct ttm_operation_ctx ctx = { - .interruptible = false, - .no_wait_gpu = false, - .flags = TTM_OPT_FLAG_FORCE_ALLOC - }; - struct ttm_bo_global *glob = &ttm_bo_glob; - struct dma_fence *fence; - int ret; - unsigned i; - - /* - * Can't use standard list traversal since we're unlocking. - */ - - spin_lock(&glob->lru_lock); - for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) { - while (!list_empty(&man->lru[i])) { - spin_unlock(&glob->lru_lock); - ret = ttm_mem_evict_first(bdev, man, NULL, &ctx, - NULL); - if (ret) - return ret; - spin_lock(&glob->lru_lock); - } - } - spin_unlock(&glob->lru_lock); - - spin_lock(&man->move_lock); - fence = dma_fence_get(man->move); - spin_unlock(&man->move_lock); - - if (fence) { - ret = dma_fence_wait(fence, false); - dma_fence_put(fence); - if (ret) - return ret; - } - - return 0; -} -EXPORT_SYMBOL(ttm_resource_manager_force_list_clean); - - int ttm_bo_evict_mm(struct ttm_bo_device *bdev, unsigned mem_type) { struct ttm_resource_manager *man = ttm_manager_type(bdev, mem_type); @@ -1468,23 +1383,6 @@ int ttm_bo_evict_mm(struct ttm_bo_device *bdev, unsigned mem_type) } EXPORT_SYMBOL(ttm_bo_evict_mm); -void ttm_resource_manager_init(struct ttm_resource_manager *man, - unsigned long p_size) -{ - unsigned i; - - man->use_io_reserve_lru = false; - mutex_init(&man->io_reserve_mutex); - spin_lock_init(&man->move_lock); - INIT_LIST_HEAD(&man->io_reserve_lru); - man->size = p_size; - - for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) - INIT_LIST_HEAD(&man->lru[i]); - man->move = NULL; -} -EXPORT_SYMBOL(ttm_resource_manager_init); - static void ttm_bo_global_kobj_release(struct kobject *kobj) { struct ttm_bo_global *glob = diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c index 496158acd5b9..12be2d3fcc81 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_util.c +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c @@ -47,7 +47,7 @@ struct ttm_transfer_obj { void ttm_bo_free_old_node(struct ttm_buffer_object *bo) { - ttm_bo_mem_put(bo, &bo->mem); + ttm_resource_free(bo, &bo->mem); } int ttm_bo_move_ttm(struct ttm_buffer_object *bo, @@ -398,7 +398,7 @@ out: * On error, keep the mm node! */ if (!ret) - ttm_bo_mem_put(bo, &old_copy); + ttm_resource_free(bo, &old_copy); return ret; } EXPORT_SYMBOL(ttm_bo_move_memcpy); diff --git a/drivers/gpu/drm/ttm/ttm_resource.c b/drivers/gpu/drm/ttm/ttm_resource.c new file mode 100644 index 000000000000..33b642532e5c --- /dev/null +++ b/drivers/gpu/drm/ttm/ttm_resource.c @@ -0,0 +1,151 @@ +/* + * Copyright 2020 Advanced Micro Devices, Inc. + * + * 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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. + * + * Authors: Christian König + */ + +#include <drm/ttm/ttm_resource.h> +#include <drm/ttm/ttm_bo_driver.h> + +int ttm_resource_alloc(struct ttm_buffer_object *bo, + const struct ttm_place *place, + struct ttm_resource *res) +{ + struct ttm_resource_manager *man = + ttm_manager_type(bo->bdev, res->mem_type); + + res->mm_node = NULL; + if (!man->func || !man->func->alloc) + return 0; + + return man->func->alloc(man, bo, place, res); +} + +void ttm_resource_free(struct ttm_buffer_object *bo, struct ttm_resource *res) +{ + struct ttm_resource_manager *man = + ttm_manager_type(bo->bdev, res->mem_type); + + if (man->func && man->func->free) + man->func->free(man, res); + + res->mm_node = NULL; + res->mem_type = TTM_PL_SYSTEM; +} +EXPORT_SYMBOL(ttm_resource_free); + +/** + * ttm_resource_manager_init + * + * @man: memory manager object to init + * @p_size: size managed area in pages. + * + * Initialise core parts of a manager object. + */ +void ttm_resource_manager_init(struct ttm_resource_manager *man, + unsigned long p_size) +{ + unsigned i; + + man->use_io_reserve_lru = false; + mutex_init(&man->io_reserve_mutex); + spin_lock_init(&man->move_lock); + INIT_LIST_HEAD(&man->io_reserve_lru); + man->size = p_size; + + for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) + INIT_LIST_HEAD(&man->lru[i]); + man->move = NULL; +} +EXPORT_SYMBOL(ttm_resource_manager_init); + +/* + * ttm_resource_manager_force_list_clean + * + * @bdev - device to use + * @man - manager to use + * + * Force all the objects out of a memory manager until clean. + * Part of memory manager cleanup sequence. + */ +int ttm_resource_manager_force_list_clean(struct ttm_bo_device *bdev, + struct ttm_resource_manager *man) +{ + struct ttm_operation_ctx ctx = { + .interruptible = false, + .no_wait_gpu = false, + .flags = TTM_OPT_FLAG_FORCE_ALLOC + }; + struct ttm_bo_global *glob = &ttm_bo_glob; + struct dma_fence *fence; + int ret; + unsigned i; + + /* + * Can't use standard list traversal since we're unlocking. + */ + + spin_lock(&glob->lru_lock); + for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) { + while (!list_empty(&man->lru[i])) { + spin_unlock(&glob->lru_lock); + ret = ttm_mem_evict_first(bdev, man, NULL, &ctx, + NULL); + if (ret) + return ret; + spin_lock(&glob->lru_lock); + } + } + spin_unlock(&glob->lru_lock); + + spin_lock(&man->move_lock); + fence = dma_fence_get(man->move); + spin_unlock(&man->move_lock); + + if (fence) { + ret = dma_fence_wait(fence, false); + dma_fence_put(fence); + if (ret) + return ret; + } + + return 0; +} +EXPORT_SYMBOL(ttm_resource_manager_force_list_clean); + +/** + * ttm_resource_manager_debug + * + * @man: manager type to dump. + * @p: printer to use for debug. + */ +void ttm_resource_manager_debug(struct ttm_resource_manager *man, + struct drm_printer *p) +{ + drm_printf(p, " use_type: %d\n", man->use_type); + drm_printf(p, " use_tt: %d\n", man->use_tt); + drm_printf(p, " size: %llu\n", man->size); + drm_printf(p, " available_caching: 0x%08X\n", man->available_caching); + drm_printf(p, " default_caching: 0x%08X\n", man->default_caching); + if (man->func && man->func->debug) + (*man->func->debug)(man, p); +} +EXPORT_SYMBOL(ttm_resource_manager_debug); diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h index 770ad2195875..dbb276abcf6a 100644 --- a/include/drm/ttm/ttm_bo_api.h +++ b/include/drm/ttm/ttm_bo_api.h @@ -42,6 +42,8 @@ #include <linux/bitmap.h> #include <linux/dma-resv.h> +#include "ttm_resource.h" + struct ttm_bo_global; struct ttm_bo_device; @@ -54,57 +56,6 @@ struct ttm_place; struct ttm_lru_bulk_move; -struct ttm_resource_manager; - -/** - * struct ttm_bus_placement - * - * @addr: mapped virtual address - * @base: bus base address - * @is_iomem: is this io memory ? - * @size: size in byte - * @offset: offset from the base address - * @io_reserved_vm: The VM system has a refcount in @io_reserved_count - * @io_reserved_count: Refcounting the numbers of callers to ttm_mem_io_reserve - * - * Structure indicating the bus placement of an object. - */ -struct ttm_bus_placement { - void *addr; - phys_addr_t base; - unsigned long size; - unsigned long offset; - bool is_iomem; - bool io_reserved_vm; - uint64_t io_reserved_count; -}; - - -/** - * struct ttm_resource - * - * @mm_node: Memory manager node. - * @size: Requested size of memory region. - * @num_pages: Actual size of memory region in pages. - * @page_alignment: Page alignment. - * @placement: Placement flags. - * @bus: Placement on io bus accessible to the CPU - * - * Structure indicating the placement and space resources used by a - * buffer object. - */ - -struct ttm_resource { - void *mm_node; - unsigned long start; - unsigned long size; - unsigned long num_pages; - uint32_t page_alignment; - uint32_t mem_type; - uint32_t placement; - struct ttm_bus_placement bus; -}; - /** * enum ttm_bo_type * @@ -534,17 +485,6 @@ int ttm_bo_create(struct ttm_bo_device *bdev, unsigned long size, struct ttm_buffer_object **p_bo); /** - * ttm_resource_manager_init - * - * @man: memory manager object to init - * @p_size: size managed area in pages. - * - * Initialise core parts of a manager object. - */ -void ttm_resource_manager_init(struct ttm_resource_manager *man, - unsigned long p_size); - -/** * ttm_bo_evict_mm * * @bdev: Pointer to a ttm_bo_device struct. @@ -680,6 +620,12 @@ static inline bool ttm_bo_uses_embedded_gem_object(struct ttm_buffer_object *bo) return bo->base.dev != NULL; } +int ttm_mem_evict_first(struct ttm_bo_device *bdev, + struct ttm_resource_manager *man, + const struct ttm_place *place, + struct ttm_operation_ctx *ctx, + struct ww_acquire_ctx *ticket); + /* Default number of pre-faulted pages in the TTM fault handler */ #define TTM_BO_VM_NUM_PREFAULT 16 diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h index bfdda61edadb..27b4a1e92875 100644 --- a/include/drm/ttm/ttm_bo_driver.h +++ b/include/drm/ttm/ttm_bo_driver.h @@ -43,131 +43,6 @@ #include "ttm_placement.h" #include "ttm_tt.h" -#define TTM_MAX_BO_PRIORITY 4U - -struct ttm_resource_manager; - -struct ttm_resource_manager_func { - /** - * struct ttm_resource_manager_func member alloc - * - * @man: Pointer to a memory type manager. - * @bo: Pointer to the buffer object we're allocating space for. - * @placement: Placement details. - * @flags: Additional placement flags. - * @mem: Pointer to a struct ttm_resource to be filled in. - * - * This function should allocate space in the memory type managed - * by @man. Placement details if - * applicable are given by @placement. If successful, - * @mem::mm_node should be set to a non-null value, and - * @mem::start should be set to a value identifying the beginning - * of the range allocated, and the function should return zero. - * If the memory region accommodate the buffer object, @mem::mm_node - * should be set to NULL, and the function should return 0. - * If a system error occurred, preventing the request to be fulfilled, - * the function should return a negative error code. - * - * Note that @mem::mm_node will only be dereferenced by - * struct ttm_resource_manager functions and optionally by the driver, - * which has knowledge of the underlying type. - * - * This function may not be called from within atomic context, so - * an implementation can and must use either a mutex or a spinlock to - * protect any data structures managing the space. - */ - int (*alloc)(struct ttm_resource_manager *man, - struct ttm_buffer_object *bo, - const struct ttm_place *place, - struct ttm_resource *mem); - - /** - * struct ttm_resource_manager_func member free - * - * @man: Pointer to a memory type manager. - * @mem: Pointer to a struct ttm_resource to be filled in. - * - * This function frees memory type resources previously allocated - * and that are identified by @mem::mm_node and @mem::start. May not - * be called from within atomic context. - */ - void (*free)(struct ttm_resource_manager *man, - struct ttm_resource *mem); - - /** - * struct ttm_resource_manager_func member debug - * - * @man: Pointer to a memory type manager. - * @printer: Prefix to be used in printout to identify the caller. - * - * This function is called to print out the state of the memory - * type manager to aid debugging of out-of-memory conditions. - * It may not be called from within atomic context. - */ - void (*debug)(struct ttm_resource_manager *man, - struct drm_printer *printer); -}; - -/** - * struct ttm_resource_manager - * - * @use_type: The memory type is enabled. - * @flags: TTM_MEMTYPE_XX flags identifying the traits of the memory - * managed by this memory type. - * @gpu_offset: If used, the GPU offset of the first managed page of - * fixed memory or the first managed location in an aperture. - * @size: Size of the managed region. - * @available_caching: A mask of available caching types, TTM_PL_FLAG_XX, - * as defined in ttm_placement_common.h - * @default_caching: The default caching policy used for a buffer object - * placed in this memory type if the user doesn't provide one. - * @func: structure pointer implementing the range manager. See above - * @io_reserve_mutex: Mutex optionally protecting shared io_reserve structures - * @use_io_reserve_lru: Use an lru list to try to unreserve io_mem_regions - * reserved by the TTM vm system. - * @io_reserve_lru: Optional lru list for unreserving io mem regions. - * @move_lock: lock for move fence - * static information. bdev::driver::io_mem_free is never used. - * @lru: The lru list for this memory type. - * @move: The fence of the last pipelined move operation. - * - * This structure is used to identify and manage memory types for a device. - */ - - - -struct ttm_resource_manager { - /* - * No protection. Constant from start. - */ - bool use_type; - bool use_tt; - uint64_t size; - uint32_t available_caching; - uint32_t default_caching; - const struct ttm_resource_manager_func *func; - struct mutex io_reserve_mutex; - bool use_io_reserve_lru; - spinlock_t move_lock; - - /* - * Protected by @io_reserve_mutex: - */ - - struct list_head io_reserve_lru; - - /* - * Protected by the global->lru_lock. - */ - - struct list_head lru[TTM_MAX_BO_PRIORITY]; - - /* - * Protected by @move_lock. - */ - struct dma_fence *move; -}; - /** * struct ttm_bo_driver * @@ -537,8 +412,6 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo, struct ttm_resource *mem, struct ttm_operation_ctx *ctx); -void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_resource *mem); - int ttm_bo_device_release(struct ttm_bo_device *bdev); /** @@ -675,59 +548,6 @@ static inline void ttm_bo_unreserve(struct ttm_buffer_object *bo) dma_resv_unlock(bo->base.resv); } -/** - * ttm_resource_manager_set_used - * - * @man: A memory manager object. - * @used: usage state to set. - * - * Set the manager in use flag. If disabled the manager is no longer - * used for object placement. - */ -static inline void ttm_resource_manager_set_used(struct ttm_resource_manager *man, bool used) -{ - man->use_type = used; -} - -/** - * ttm_resource_manager_used - * - * @man: Manager to get used state for - * - * Get the in use flag for a manager. - * Returns: - * true is used, false if not. - */ -static inline bool ttm_resource_manager_used(struct ttm_resource_manager *man) -{ - return man->use_type; -} - -/** - * ttm_resource_manager_cleanup - * - * @man: A memory manager object. - * - * Cleanup the move fences from the memory manager object. - */ -static inline void ttm_resource_manager_cleanup(struct ttm_resource_manager *man) -{ - dma_fence_put(man->move); - man->move = NULL; -} - -/* - * ttm_resource_manager_force_list_clean - * - * @bdev - device to use - * @man - manager to use - * - * Force all the objects out of a memory manager until clean. - * Part of memory manager cleanup sequence. - */ -int ttm_resource_manager_force_list_clean(struct ttm_bo_device *bdev, - struct ttm_resource_manager *man); - /* * ttm_bo_util.c */ @@ -874,13 +694,4 @@ int ttm_range_man_init(struct ttm_bo_device *bdev, int ttm_range_man_fini(struct ttm_bo_device *bdev, unsigned type); -/** - * ttm_resource_manager_debug - * - * @man: manager type to dump. - * @p: printer to use for debug. - */ -void ttm_resource_manager_debug(struct ttm_resource_manager *man, - struct drm_printer *p); - #endif diff --git a/include/drm/ttm/ttm_resource.h b/include/drm/ttm/ttm_resource.h new file mode 100644 index 000000000000..bac22a56f6cd --- /dev/null +++ b/include/drm/ttm/ttm_resource.h @@ -0,0 +1,263 @@ +/* + * Copyright 2020 Advanced Micro Devices, Inc. + * + * 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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. + * + * Authors: Christian König + */ + +#ifndef _TTM_RESOURCE_H_ +#define _TTM_RESOURCE_H_ + +#include <linux/types.h> +#include <linux/mutex.h> +#include <linux/dma-fence.h> +#include <drm/drm_print.h> + +#define TTM_MAX_BO_PRIORITY 4U + +struct ttm_bo_device; +struct ttm_resource_manager; +struct ttm_resource; +struct ttm_place; +struct ttm_buffer_object; + +struct ttm_resource_manager_func { + /** + * struct ttm_resource_manager_func member alloc + * + * @man: Pointer to a memory type manager. + * @bo: Pointer to the buffer object we're allocating space for. + * @placement: Placement details. + * @flags: Additional placement flags. + * @mem: Pointer to a struct ttm_resource to be filled in. + * + * This function should allocate space in the memory type managed + * by @man. Placement details if + * applicable are given by @placement. If successful, + * @mem::mm_node should be set to a non-null value, and + * @mem::start should be set to a value identifying the beginning + * of the range allocated, and the function should return zero. + * If the memory region accommodate the buffer object, @mem::mm_node + * should be set to NULL, and the function should return 0. + * If a system error occurred, preventing the request to be fulfilled, + * the function should return a negative error code. + * + * Note that @mem::mm_node will only be dereferenced by + * struct ttm_resource_manager functions and optionally by the driver, + * which has knowledge of the underlying type. + * + * This function may not be called from within atomic context, so + * an implementation can and must use either a mutex or a spinlock to + * protect any data structures managing the space. + */ + int (*alloc)(struct ttm_resource_manager *man, + struct ttm_buffer_object *bo, + const struct ttm_place *place, + struct ttm_resource *mem); + + /** + * struct ttm_resource_manager_func member free + * + * @man: Pointer to a memory type manager. + * @mem: Pointer to a struct ttm_resource to be filled in. + * + * This function frees memory type resources previously allocated + * and that are identified by @mem::mm_node and @mem::start. May not + * be called from within atomic context. + */ + void (*free)(struct ttm_resource_manager *man, + struct ttm_resource *mem); + + /** + * struct ttm_resource_manager_func member debug + * + * @man: Pointer to a memory type manager. + * @printer: Prefix to be used in printout to identify the caller. + * + * This function is called to print out the state of the memory + * type manager to aid debugging of out-of-memory conditions. + * It may not be called from within atomic context. + */ + void (*debug)(struct ttm_resource_manager *man, + struct drm_printer *printer); +}; + +/** + * struct ttm_resource_manager + * + * @use_type: The memory type is enabled. + * @flags: TTM_MEMTYPE_XX flags identifying the traits of the memory + * managed by this memory type. + * @gpu_offset: If used, the GPU offset of the first managed page of + * fixed memory or the first managed location in an aperture. + * @size: Size of the managed region. + * @available_caching: A mask of available caching types, TTM_PL_FLAG_XX, + * as defined in ttm_placement_common.h + * @default_caching: The default caching policy used for a buffer object + * placed in this memory type if the user doesn't provide one. + * @func: structure pointer implementing the range manager. See above + * @io_reserve_mutex: Mutex optionally protecting shared io_reserve structures + * @use_io_reserve_lru: Use an lru list to try to unreserve io_mem_regions + * reserved by the TTM vm system. + * @io_reserve_lru: Optional lru list for unreserving io mem regions. + * @move_lock: lock for move fence + * static information. bdev::driver::io_mem_free is never used. + * @lru: The lru list for this memory type. + * @move: The fence of the last pipelined move operation. + * + * This structure is used to identify and manage memory types for a device. + */ +struct ttm_resource_manager { + /* + * No protection. Constant from start. + */ + bool use_type; + bool use_tt; + uint64_t size; + uint32_t available_caching; + uint32_t default_caching; + const struct ttm_resource_manager_func *func; + struct mutex io_reserve_mutex; + bool use_io_reserve_lru; + spinlock_t move_lock; + + /* + * Protected by @io_reserve_mutex: + */ + + struct list_head io_reserve_lru; + + /* + * Protected by the global->lru_lock. + */ + + struct list_head lru[TTM_MAX_BO_PRIORITY]; + + /* + * Protected by @move_lock. + */ + struct dma_fence *move; +}; + +/** + * struct ttm_bus_placement + * + * @addr: mapped virtual address + * @base: bus base address + * @is_iomem: is this io memory ? + * @size: size in byte + * @offset: offset from the base address + * @io_reserved_vm: The VM system has a refcount in @io_reserved_count + * @io_reserved_count: Refcounting the numbers of callers to ttm_mem_io_reserve + * + * Structure indicating the bus placement of an object. + */ +struct ttm_bus_placement { + void *addr; + phys_addr_t base; + unsigned long size; + unsigned long offset; + bool is_iomem; + bool io_reserved_vm; + uint64_t io_reserved_count; +}; + +/** + * struct ttm_resource + * + * @mm_node: Memory manager node. + * @size: Requested size of memory region. + * @num_pages: Actual size of memory region in pages. + * @page_alignment: Page alignment. + * @placement: Placement flags. + * @bus: Placement on io bus accessible to the CPU + * + * Structure indicating the placement and space resources used by a + * buffer object. + */ +struct ttm_resource { + void *mm_node; + unsigned long start; + unsigned long size; + unsigned long num_pages; + uint32_t page_alignment; + uint32_t mem_type; + uint32_t placement; + struct ttm_bus_placement bus; +}; + +/** + * ttm_resource_manager_set_used + * + * @man: A memory manager object. + * @used: usage state to set. + * + * Set the manager in use flag. If disabled the manager is no longer + * used for object placement. + */ +static inline void +ttm_resource_manager_set_used(struct ttm_resource_manager *man, bool used) +{ + man->use_type = used; +} + +/** + * ttm_resource_manager_used + * + * @man: Manager to get used state for + * + * Get the in use flag for a manager. + * Returns: + * true is used, false if not. + */ +static inline bool ttm_resource_manager_used(struct ttm_resource_manager *man) +{ + return man->use_type; +} + +/** + * ttm_resource_manager_cleanup + * + * @man: A memory manager object. + * + * Cleanup the move fences from the memory manager object. + */ +static inline void +ttm_resource_manager_cleanup(struct ttm_resource_manager *man) +{ + dma_fence_put(man->move); + man->move = NULL; +} + +int ttm_resource_alloc(struct ttm_buffer_object *bo, + const struct ttm_place *place, + struct ttm_resource *res); +void ttm_resource_free(struct ttm_buffer_object *bo, struct ttm_resource *res); + +void ttm_resource_manager_init(struct ttm_resource_manager *man, + unsigned long p_size); + +int ttm_resource_manager_force_list_clean(struct ttm_bo_device *bdev, + struct ttm_resource_manager *man); + +void ttm_resource_manager_debug(struct ttm_resource_manager *man, + struct drm_printer *p); + +#endif |