From: Dave Airlie Date: Thu, 10 Jun 2021 01:03:50 +0000 (+1000) Subject: Merge tag 'drm-misc-next-2021-06-09' of git://anongit.freedesktop.org/drm/drm-misc... X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=09b020bb05a514f560979438fa40406bc63d5353;p=linux.git Merge tag 'drm-misc-next-2021-06-09' of git://anongit.freedesktop.org/drm/drm-misc into drm-next drm-misc-next for 5.14: UAPI Changes: * drm/panfrost: Export AFBC_FEATURES register to userspace Cross-subsystem Changes: * dma-buf: Fix debug printing; Rename dma_resv_*() functions + changes in callers; Cleanups Core Changes: * Add prefetching memcpy for WC * Avoid circular dependency on CONFIG_FB * Cleanups * Documentation fixes throughout DRM * ttm: Make struct ttm_resource the base of all managers + changes in all users of TTM; Add a generic memcpy for page-based iomem; Remove use of VM_MIXEDMAP; Cleanups Driver Changes: * drm/bridge: Add TI SN65DSI83 and SN65DSI84 + DT bindings * drm/hyperv: Add DRM driver for HyperV graphics output * drm/msm: Fix module dependencies * drm/panel: KD53T133: Support rotation * drm/pl111: Fix module dependencies * drm/qxl: Fixes * drm/stm: Cleanups * drm/sun4i: Be explicit about format modifiers * drm/vc4: Use struct gpio_desc; Cleanups * drm/vgem: Cleanups * drm/vmwgfx: Use ttm_bo_move_null() if there's nothing to copy * fbdev/mach64: Cleanups * fbdev/mb862xx: Use DEVICE_ATTR_RO Signed-off-by: Dave Airlie From: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/YMBw3DF2b9udByfT@linux-uq9g --- 09b020bb05a514f560979438fa40406bc63d5353 diff --cc drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c index 9ab33048923e7,194f9eecf89c1..ec96e0b26b116 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c @@@ -221,10 -232,9 +233,10 @@@ int amdgpu_gtt_mgr_recover(struct ttm_r struct drm_mm_node *mm_node; int r = 0; + adev = container_of(mgr, typeof(*adev), mman.gtt_mgr); spin_lock(&mgr->lock); drm_mm_for_each_node(mm_node, &mgr->mm) { - node = container_of(mm_node, struct amdgpu_gtt_node, node); + node = container_of(mm_node, typeof(*node), base.mm_nodes[0]); r = amdgpu_ttm_recover_gart(node->tbo); if (r) break; diff --cc drivers/gpu/drm/amd/amdgpu/amdgpu_preempt_mgr.c index d607f314cc1b5,0000000000000..f6aff7ce51606 mode 100644,000000..100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_preempt_mgr.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_preempt_mgr.c @@@ -1,190 -1,0 +1,195 @@@ +// SPDX-License-Identifier: GPL-2.0 OR MIT +/* + * Copyright 2016-2021 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, Felix Kuehling + */ + +#include "amdgpu.h" + +static inline struct amdgpu_preempt_mgr * +to_preempt_mgr(struct ttm_resource_manager *man) +{ + return container_of(man, struct amdgpu_preempt_mgr, manager); +} + +/** + * DOC: mem_info_preempt_used + * + * The amdgpu driver provides a sysfs API for reporting current total amount of + * used preemptible memory. + * The file mem_info_preempt_used is used for this, and returns the current + * used size of the preemptible block, in bytes + */ +static ssize_t mem_info_preempt_used_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + struct amdgpu_device *adev = drm_to_adev(ddev); + struct ttm_resource_manager *man; + + man = ttm_manager_type(&adev->mman.bdev, AMDGPU_PL_PREEMPT); + return sysfs_emit(buf, "%llu\n", amdgpu_preempt_mgr_usage(man)); +} + +static DEVICE_ATTR_RO(mem_info_preempt_used); + +/** + * amdgpu_preempt_mgr_new - allocate a new node + * + * @man: TTM memory type manager + * @tbo: TTM BO we need this range for + * @place: placement flags and restrictions + * @mem: the resulting mem object + * + * Dummy, just count the space used without allocating resources or any limit. + */ +static int amdgpu_preempt_mgr_new(struct ttm_resource_manager *man, + struct ttm_buffer_object *tbo, + const struct ttm_place *place, - struct ttm_resource *mem) ++ struct ttm_resource **res) +{ + struct amdgpu_preempt_mgr *mgr = to_preempt_mgr(man); + - atomic64_add(mem->num_pages, &mgr->used); ++ *res = kzalloc(sizeof(**res), GFP_KERNEL); ++ if (*res) ++ return -ENOMEM; + - mem->mm_node = NULL; - mem->start = AMDGPU_BO_INVALID_OFFSET; ++ ttm_resource_init(tbo, place, *res); ++ (*res)->start = AMDGPU_BO_INVALID_OFFSET; ++ ++ atomic64_add((*res)->num_pages, &mgr->used); + return 0; +} + +/** + * amdgpu_preempt_mgr_del - free ranges + * + * @man: TTM memory type manager + * @mem: TTM memory object + * + * Free the allocated GTT again. + */ +static void amdgpu_preempt_mgr_del(struct ttm_resource_manager *man, - struct ttm_resource *mem) ++ struct ttm_resource *res) +{ + struct amdgpu_preempt_mgr *mgr = to_preempt_mgr(man); + - atomic64_sub(mem->num_pages, &mgr->used); ++ atomic64_sub(res->num_pages, &mgr->used); ++ kfree(res); +} + +/** + * amdgpu_preempt_mgr_usage - return usage of PREEMPT domain + * + * @man: TTM memory type manager + * + * Return how many bytes are used in the GTT domain + */ +uint64_t amdgpu_preempt_mgr_usage(struct ttm_resource_manager *man) +{ + struct amdgpu_preempt_mgr *mgr = to_preempt_mgr(man); + s64 result = atomic64_read(&mgr->used); + + return (result > 0 ? result : 0) * PAGE_SIZE; +} + +/** + * amdgpu_preempt_mgr_debug - dump VRAM table + * + * @man: TTM memory type manager + * @printer: DRM printer to use + * + * Dump the table content using printk. + */ +static void amdgpu_preempt_mgr_debug(struct ttm_resource_manager *man, + struct drm_printer *printer) +{ + struct amdgpu_preempt_mgr *mgr = to_preempt_mgr(man); + + drm_printf(printer, "man size:%llu pages, preempt used:%lld pages\n", + man->size, (u64)atomic64_read(&mgr->used)); +} + +static const struct ttm_resource_manager_func amdgpu_preempt_mgr_func = { + .alloc = amdgpu_preempt_mgr_new, + .free = amdgpu_preempt_mgr_del, + .debug = amdgpu_preempt_mgr_debug +}; + +/** + * amdgpu_preempt_mgr_init - init PREEMPT manager and DRM MM + * + * @adev: amdgpu_device pointer + * + * Allocate and initialize the GTT manager. + */ +int amdgpu_preempt_mgr_init(struct amdgpu_device *adev) +{ + struct amdgpu_preempt_mgr *mgr = &adev->mman.preempt_mgr; + struct ttm_resource_manager *man = &mgr->manager; + int ret; + + man->use_tt = true; + man->func = &amdgpu_preempt_mgr_func; + + ttm_resource_manager_init(man, (1 << 30)); + + atomic64_set(&mgr->used, 0); + + ret = device_create_file(adev->dev, &dev_attr_mem_info_preempt_used); + if (ret) { + DRM_ERROR("Failed to create device file mem_info_preempt_used\n"); + return ret; + } + + ttm_set_driver_manager(&adev->mman.bdev, AMDGPU_PL_PREEMPT, + &mgr->manager); + ttm_resource_manager_set_used(man, true); + return 0; +} + +/** + * amdgpu_preempt_mgr_fini - free and destroy GTT manager + * + * @adev: amdgpu_device pointer + * + * Destroy and free the GTT manager, returns -EBUSY if ranges are still + * allocated inside it. + */ +void amdgpu_preempt_mgr_fini(struct amdgpu_device *adev) +{ + struct amdgpu_preempt_mgr *mgr = &adev->mman.preempt_mgr; + struct ttm_resource_manager *man = &mgr->manager; + int ret; + + ttm_resource_manager_set_used(man, false); + + ret = ttm_resource_manager_evict_all(&adev->mman.bdev, man); + if (ret) + return; + + device_remove_file(adev->dev, &dev_attr_mem_info_preempt_used); + + ttm_resource_manager_cleanup(man); + ttm_set_driver_manager(&adev->mman.bdev, AMDGPU_PL_PREEMPT, NULL); +} diff --cc drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 832970cff64c0,ea26cb5072e33..5d0c57b9917f1 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@@ -460,11 -460,10 +462,11 @@@ static int amdgpu_bo_move(struct ttm_bu { struct amdgpu_device *adev; struct amdgpu_bo *abo; - struct ttm_resource *old_mem = &bo->mem; + struct ttm_resource *old_mem = bo->resource; int r; - if (new_mem->mem_type == TTM_PL_TT) { + if (new_mem->mem_type == TTM_PL_TT || + new_mem->mem_type == AMDGPU_PL_PREEMPT) { r = amdgpu_ttm_backend_bind(bo->bdev, bo->ttm, new_mem); if (r) return r; @@@ -965,39 -962,38 +968,39 @@@ int amdgpu_ttm_alloc_gart(struct ttm_bu addr = amdgpu_gmc_agp_addr(bo); if (addr != AMDGPU_BO_INVALID_OFFSET) { - bo->mem.start = addr >> PAGE_SHIFT; - } else { + bo->resource->start = addr >> PAGE_SHIFT; + return 0; + } - /* allocate GART space */ - placement.num_placement = 1; - placement.placement = &placements; - placement.num_busy_placement = 1; - placement.busy_placement = &placements; - placements.fpfn = 0; - placements.lpfn = adev->gmc.gart_size >> PAGE_SHIFT; - placements.mem_type = TTM_PL_TT; - placements.flags = bo->mem.placement; - - r = ttm_bo_mem_space(bo, &placement, &tmp, &ctx); - if (unlikely(r)) - return r; + /* allocate GART space */ + placement.num_placement = 1; + placement.placement = &placements; + placement.num_busy_placement = 1; + placement.busy_placement = &placements; + placements.fpfn = 0; + placements.lpfn = adev->gmc.gart_size >> PAGE_SHIFT; + placements.mem_type = TTM_PL_TT; + placements.flags = bo->resource->placement; + + r = ttm_bo_mem_space(bo, &placement, &tmp, &ctx); + if (unlikely(r)) + return r; - /* compute PTE flags for this buffer object */ - flags = amdgpu_ttm_tt_pte_flags(adev, bo->ttm, &tmp); + /* compute PTE flags for this buffer object */ + flags = amdgpu_ttm_tt_pte_flags(adev, bo->ttm, tmp); - /* Bind pages */ - gtt->offset = (u64)tmp.start << PAGE_SHIFT; - r = amdgpu_ttm_gart_bind(adev, bo, flags); - if (unlikely(r)) { - ttm_resource_free(bo, &tmp); - return r; - } - - amdgpu_gart_invalidate_tlb(adev); - ttm_resource_free(bo, &bo->mem); - bo->mem = tmp; + /* Bind pages */ + gtt->offset = (u64)tmp->start << PAGE_SHIFT; + r = amdgpu_ttm_gart_bind(adev, bo, flags); + if (unlikely(r)) { + ttm_resource_free(bo, &tmp); + return r; } ++ amdgpu_gart_invalidate_tlb(adev); + ttm_resource_free(bo, &bo->resource); + ttm_bo_assign_mem(bo, tmp); + return 0; } @@@ -1354,16 -1353,7 +1361,16 @@@ static bool amdgpu_ttm_bo_eviction_valu } } - switch (bo->mem.mem_type) { + switch (bo->resource->mem_type) { + case AMDGPU_PL_PREEMPT: + /* Preemptible BOs don't own system resources managed by the + * driver (pages, VRAM, GART space). They point to resources + * owned by someone else (e.g. pageable memory in user mode + * or a DMABuf). They are used in a preemptible context so we + * can guarantee no deadlocks and good QoS in case of MMU + * notifiers or DMABuf move notifiers from the resource owner. + */ + return false; case TTM_PL_TT: if (amdgpu_bo_is_amdgpu_bo(bo) && amdgpu_bo_encrypted(ttm_to_amdgpu_bo(bo))) @@@ -1942,12 -1924,7 +1949,12 @@@ int amdgpu_fill_buffer(struct amdgpu_b return -EINVAL; } - if (bo->tbo.mem.mem_type == AMDGPU_PL_PREEMPT) { ++ if (bo->tbo.resource->mem_type == AMDGPU_PL_PREEMPT) { + DRM_ERROR("Trying to clear preemptible memory.\n"); + return -EINVAL; + } + - if (bo->tbo.mem.mem_type == TTM_PL_TT) { + if (bo->tbo.resource->mem_type == TTM_PL_TT) { r = amdgpu_ttm_alloc_gart(&bo->tbo); if (r) return r; diff --cc drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 8d218c5cfee84,d1a229212e7a9..777e8922ecf33 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@@ -658,10 -657,11 +658,11 @@@ void amdgpu_vm_move_to_lru_tail(struct if (!bo->parent) continue; - ttm_bo_move_to_lru_tail(&bo->tbo, &bo->tbo.mem, + ttm_bo_move_to_lru_tail(&bo->tbo, bo->tbo.resource, &vm->lru_bulk_move); - if (bo->shadow) - ttm_bo_move_to_lru_tail(&bo->shadow->tbo, - bo->shadow->tbo.resource, + if (shadow) - ttm_bo_move_to_lru_tail(&shadow->tbo, &shadow->tbo.mem, ++ ttm_bo_move_to_lru_tail(&shadow->tbo, ++ shadow->tbo.resource, &vm->lru_bulk_move); } spin_unlock(&adev->mman.bdev.lru_lock); @@@ -1858,12 -1818,11 +1859,12 @@@ int amdgpu_vm_bo_update(struct amdgpu_d struct drm_gem_object *gobj = dma_buf->priv; struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj); - if (abo->tbo.mem.mem_type == TTM_PL_VRAM) + if (abo->tbo.resource->mem_type == TTM_PL_VRAM) bo = gem_to_amdgpu_bo(gobj); } - mem = &bo->tbo.mem; + mem = bo->tbo.resource; - if (mem->mem_type == TTM_PL_TT) + if (mem->mem_type == TTM_PL_TT || + mem->mem_type == AMDGPU_PL_PREEMPT) pages_addr = bo->tbo.ttm->dma_address; }