| /* |
| * Copyright 2009 Jerome Glisse. |
| * All Rights Reserved. |
| * |
| * 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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. |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial portions |
| * of the Software. |
| * |
| */ |
| /* |
| * Authors: |
| * Jerome Glisse <glisse@freedesktop.org> |
| * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com> |
| * Dave Airlie |
| */ |
| #include <linux/list.h> |
| #include <linux/slab.h> |
| #include <drm/drmP.h> |
| #include "radeon_drm.h" |
| #include "radeon.h" |
| #include "radeon_trace.h" |
| |
| |
| int radeon_ttm_init(struct radeon_device *rdev); |
| void radeon_ttm_fini(struct radeon_device *rdev); |
| static void radeon_bo_clear_surface_reg(struct radeon_bo *bo); |
| |
| /* |
| * To exclude mutual BO access we rely on bo_reserve exclusion, as all |
| * function are calling it. |
| */ |
| |
| static void radeon_ttm_bo_destroy(struct ttm_buffer_object *tbo) |
| { |
| struct radeon_bo *bo; |
| |
| bo = container_of(tbo, struct radeon_bo, tbo); |
| mutex_lock(&bo->rdev->gem.mutex); |
| list_del_init(&bo->list); |
| mutex_unlock(&bo->rdev->gem.mutex); |
| radeon_bo_clear_surface_reg(bo); |
| drm_gem_object_release(&bo->gem_base); |
| kfree(bo); |
| } |
| |
| bool radeon_ttm_bo_is_radeon_bo(struct ttm_buffer_object *bo) |
| { |
| if (bo->destroy == &radeon_ttm_bo_destroy) |
| return true; |
| return false; |
| } |
| |
| void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain) |
| { |
| u32 c = 0; |
| |
| rbo->placement.fpfn = 0; |
| rbo->placement.lpfn = 0; |
| rbo->placement.placement = rbo->placements; |
| rbo->placement.busy_placement = rbo->placements; |
| if (domain & RADEON_GEM_DOMAIN_VRAM) |
| rbo->placements[c++] = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | |
| TTM_PL_FLAG_VRAM; |
| if (domain & RADEON_GEM_DOMAIN_GTT) |
| rbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT; |
| if (domain & RADEON_GEM_DOMAIN_CPU) |
| rbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; |
| if (!c) |
| rbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; |
| rbo->placement.num_placement = c; |
| rbo->placement.num_busy_placement = c; |
| } |
| |
| int radeon_bo_create(struct radeon_device *rdev, |
| unsigned long size, int byte_align, bool kernel, u32 domain, |
| struct radeon_bo **bo_ptr) |
| { |
| struct radeon_bo *bo; |
| enum ttm_bo_type type; |
| unsigned long page_align = roundup(byte_align, PAGE_SIZE) >> PAGE_SHIFT; |
| unsigned long max_size = 0; |
| int r; |
| |
| size = ALIGN(size, PAGE_SIZE); |
| |
| if (unlikely(rdev->mman.bdev.dev_mapping == NULL)) { |
| rdev->mman.bdev.dev_mapping = rdev->ddev->dev_mapping; |
| } |
| if (kernel) { |
| type = ttm_bo_type_kernel; |
| } else { |
| type = ttm_bo_type_device; |
| } |
| *bo_ptr = NULL; |
| |
| /* maximun bo size is the minimun btw visible vram and gtt size */ |
| max_size = min(rdev->mc.visible_vram_size, rdev->mc.gtt_size); |
| if ((page_align << PAGE_SHIFT) >= max_size) { |
| printk(KERN_WARNING "%s:%d alloc size %ldM bigger than %ldMb limit\n", |
| __func__, __LINE__, page_align >> (20 - PAGE_SHIFT), max_size >> 20); |
| return -ENOMEM; |
| } |
| |
| retry: |
| bo = kzalloc(sizeof(struct radeon_bo), GFP_KERNEL); |
| if (bo == NULL) |
| return -ENOMEM; |
| r = drm_gem_object_init(rdev->ddev, &bo->gem_base, size); |
| if (unlikely(r)) { |
| kfree(bo); |
| return r; |
| } |
| bo->rdev = rdev; |
| bo->gem_base.driver_private = NULL; |
| bo->surface_reg = -1; |
| INIT_LIST_HEAD(&bo->list); |
| radeon_ttm_placement_from_domain(bo, domain); |
| /* Kernel allocation are uninterruptible */ |
| mutex_lock(&rdev->vram_mutex); |
| r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type, |
| &bo->placement, page_align, 0, !kernel, NULL, size, |
| &radeon_ttm_bo_destroy); |
| mutex_unlock(&rdev->vram_mutex); |
| if (unlikely(r != 0)) { |
| if (r != -ERESTARTSYS) { |
| if (domain == RADEON_GEM_DOMAIN_VRAM) { |
| domain |= RADEON_GEM_DOMAIN_GTT; |
| goto retry; |
| } |
| dev_err(rdev->dev, |
| "object_init failed for (%lu, 0x%08X)\n", |
| size, domain); |
| } |
| return r; |
| } |
| *bo_ptr = bo; |
| |
| trace_radeon_bo_create(bo); |
| |
| return 0; |
| } |
| |
| int radeon_bo_kmap(struct radeon_bo *bo, void **ptr) |
| { |
| bool is_iomem; |
| int r; |
| |
| if (bo->kptr) { |
| if (ptr) { |
| *ptr = bo->kptr; |
| } |
| return 0; |
| } |
| r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap); |
| if (r) { |
| return r; |
| } |
| bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem); |
| if (ptr) { |
| *ptr = bo->kptr; |
| } |
| radeon_bo_check_tiling(bo, 0, 0); |
| return 0; |
| } |
| |
| void radeon_bo_kunmap(struct radeon_bo *bo) |
| { |
| if (bo->kptr == NULL) |
| return; |
| bo->kptr = NULL; |
| radeon_bo_check_tiling(bo, 0, 0); |
| ttm_bo_kunmap(&bo->kmap); |
| } |
| |
| void radeon_bo_unref(struct radeon_bo **bo) |
| { |
| struct ttm_buffer_object *tbo; |
| struct radeon_device *rdev; |
| |
| if ((*bo) == NULL) |
| return; |
| rdev = (*bo)->rdev; |
| tbo = &((*bo)->tbo); |
| mutex_lock(&rdev->vram_mutex); |
| ttm_bo_unref(&tbo); |
| mutex_unlock(&rdev->vram_mutex); |
| if (tbo == NULL) |
| *bo = NULL; |
| } |
| |
| int radeon_bo_pin(struct radeon_bo *bo, u32 domain, u64 *gpu_addr) |
| { |
| int r, i; |
| |
| if (bo->pin_count) { |
| bo->pin_count++; |
| if (gpu_addr) |
| *gpu_addr = radeon_bo_gpu_offset(bo); |
| return 0; |
| } |
| radeon_ttm_placement_from_domain(bo, domain); |
| if (domain == RADEON_GEM_DOMAIN_VRAM) { |
| /* force to pin into visible video ram */ |
| bo->placement.lpfn = bo->rdev->mc.visible_vram_size >> PAGE_SHIFT; |
| } |
| for (i = 0; i < bo->placement.num_placement; i++) |
| bo->placements[i] |= TTM_PL_FLAG_NO_EVICT; |
| r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false, false); |
| if (likely(r == 0)) { |
| bo->pin_count = 1; |
| if (gpu_addr != NULL) |
| *gpu_addr = radeon_bo_gpu_offset(bo); |
| } |
| if (unlikely(r != 0)) |
| dev_err(bo->rdev->dev, "%p pin failed\n", bo); |
| return r; |
| } |
| |
| int radeon_bo_unpin(struct radeon_bo *bo) |
| { |
| int r, i; |
| |
| if (!bo->pin_count) { |
| dev_warn(bo->rdev->dev, "%p unpin not necessary\n", bo); |
| return 0; |
| } |
| bo->pin_count--; |
| if (bo->pin_count) |
| return 0; |
| for (i = 0; i < bo->placement.num_placement; i++) |
| bo->placements[i] &= ~TTM_PL_FLAG_NO_EVICT; |
| r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false, false); |
| if (unlikely(r != 0)) |
| dev_err(bo->rdev->dev, "%p validate failed for unpin\n", bo); |
| return r; |
| } |
| |
| int radeon_bo_evict_vram(struct radeon_device *rdev) |
| { |
| /* late 2.6.33 fix IGP hibernate - we need pm ops to do this correct */ |
| if (0 && (rdev->flags & RADEON_IS_IGP)) { |
| if (rdev->mc.igp_sideport_enabled == false) |
| /* Useless to evict on IGP chips */ |
| return 0; |
| } |
| return ttm_bo_evict_mm(&rdev->mman.bdev, TTM_PL_VRAM); |
| } |
| |
| void radeon_bo_force_delete(struct radeon_device *rdev) |
| { |
| struct radeon_bo *bo, *n; |
| |
| if (list_empty(&rdev->gem.objects)) { |
| return; |
| } |
| dev_err(rdev->dev, "Userspace still has active objects !\n"); |
| list_for_each_entry_safe(bo, n, &rdev->gem.objects, list) { |
| mutex_lock(&rdev->ddev->struct_mutex); |
| dev_err(rdev->dev, "%p %p %lu %lu force free\n", |
| &bo->gem_base, bo, (unsigned long)bo->gem_base.size, |
| *((unsigned long *)&bo->gem_base.refcount)); |
| mutex_lock(&bo->rdev->gem.mutex); |
| list_del_init(&bo->list); |
| mutex_unlock(&bo->rdev->gem.mutex); |
| /* this should unref the ttm bo */ |
| drm_gem_object_unreference(&bo->gem_base); |
| mutex_unlock(&rdev->ddev->struct_mutex); |
| } |
| } |
| |
| int radeon_bo_init(struct radeon_device *rdev) |
| { |
| /* Add an MTRR for the VRAM */ |
| rdev->mc.vram_mtrr = mtrr_add(rdev->mc.aper_base, rdev->mc.aper_size, |
| MTRR_TYPE_WRCOMB, 1); |
| DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n", |
| rdev->mc.mc_vram_size >> 20, |
| (unsigned long long)rdev->mc.aper_size >> 20); |
| DRM_INFO("RAM width %dbits %cDR\n", |
| rdev->mc.vram_width, rdev->mc.vram_is_ddr ? 'D' : 'S'); |
| return radeon_ttm_init(rdev); |
| } |
| |
| void radeon_bo_fini(struct radeon_device *rdev) |
| { |
| radeon_ttm_fini(rdev); |
| } |
| |
| void radeon_bo_list_add_object(struct radeon_bo_list *lobj, |
| struct list_head *head) |
| { |
| if (lobj->wdomain) { |
| list_add(&lobj->tv.head, head); |
| } else { |
| list_add_tail(&lobj->tv.head, head); |
| } |
| } |
| |
| int radeon_bo_list_validate(struct list_head *head) |
| { |
| struct radeon_bo_list *lobj; |
| struct radeon_bo *bo; |
| u32 domain; |
| int r; |
| |
| r = ttm_eu_reserve_buffers(head); |
| if (unlikely(r != 0)) { |
| return r; |
| } |
| list_for_each_entry(lobj, head, tv.head) { |
| bo = lobj->bo; |
| if (!bo->pin_count) { |
| domain = lobj->wdomain ? lobj->wdomain : lobj->rdomain; |
| |
| retry: |
| radeon_ttm_placement_from_domain(bo, domain); |
| r = ttm_bo_validate(&bo->tbo, &bo->placement, |
| true, false, false); |
| if (unlikely(r)) { |
| if (r != -ERESTARTSYS && domain == RADEON_GEM_DOMAIN_VRAM) { |
| domain |= RADEON_GEM_DOMAIN_GTT; |
| goto retry; |
| } |
| return r; |
| } |
| } |
| lobj->gpu_offset = radeon_bo_gpu_offset(bo); |
| lobj->tiling_flags = bo->tiling_flags; |
| } |
| return 0; |
| } |
| |
| int radeon_bo_fbdev_mmap(struct radeon_bo *bo, |
| struct vm_area_struct *vma) |
| { |
| return ttm_fbdev_mmap(vma, &bo->tbo); |
| } |
| |
| int radeon_bo_get_surface_reg(struct radeon_bo *bo) |
| { |
| struct radeon_device *rdev = bo->rdev; |
| struct radeon_surface_reg *reg; |
| struct radeon_bo *old_object; |
| int steal; |
| int i; |
| |
| BUG_ON(!atomic_read(&bo->tbo.reserved)); |
| |
| if (!bo->tiling_flags) |
| return 0; |
| |
| if (bo->surface_reg >= 0) { |
| reg = &rdev->surface_regs[bo->surface_reg]; |
| i = bo->surface_reg; |
| goto out; |
| } |
| |
| steal = -1; |
| for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) { |
| |
| reg = &rdev->surface_regs[i]; |
| if (!reg->bo) |
| break; |
| |
| old_object = reg->bo; |
| if (old_object->pin_count == 0) |
| steal = i; |
| } |
| |
| /* if we are all out */ |
| if (i == RADEON_GEM_MAX_SURFACES) { |
| if (steal == -1) |
| return -ENOMEM; |
| /* find someone with a surface reg and nuke their BO */ |
| reg = &rdev->surface_regs[steal]; |
| old_object = reg->bo; |
| /* blow away the mapping */ |
| DRM_DEBUG("stealing surface reg %d from %p\n", steal, old_object); |
| ttm_bo_unmap_virtual(&old_object->tbo); |
| old_object->surface_reg = -1; |
| i = steal; |
| } |
| |
| bo->surface_reg = i; |
| reg->bo = bo; |
| |
| out: |
| radeon_set_surface_reg(rdev, i, bo->tiling_flags, bo->pitch, |
| bo->tbo.mem.start << PAGE_SHIFT, |
| bo->tbo.num_pages << PAGE_SHIFT); |
| return 0; |
| } |
| |
| static void radeon_bo_clear_surface_reg(struct radeon_bo *bo) |
| { |
| struct radeon_device *rdev = bo->rdev; |
| struct radeon_surface_reg *reg; |
| |
| if (bo->surface_reg == -1) |
| return; |
| |
| reg = &rdev->surface_regs[bo->surface_reg]; |
| radeon_clear_surface_reg(rdev, bo->surface_reg); |
| |
| reg->bo = NULL; |
| bo->surface_reg = -1; |
| } |
| |
| int radeon_bo_set_tiling_flags(struct radeon_bo *bo, |
| uint32_t tiling_flags, uint32_t pitch) |
| { |
| int r; |
| |
| r = radeon_bo_reserve(bo, false); |
| if (unlikely(r != 0)) |
| return r; |
| bo->tiling_flags = tiling_flags; |
| bo->pitch = pitch; |
| radeon_bo_unreserve(bo); |
| return 0; |
| } |
| |
| void radeon_bo_get_tiling_flags(struct radeon_bo *bo, |
| uint32_t *tiling_flags, |
| uint32_t *pitch) |
| { |
| BUG_ON(!atomic_read(&bo->tbo.reserved)); |
| if (tiling_flags) |
| *tiling_flags = bo->tiling_flags; |
| if (pitch) |
| *pitch = bo->pitch; |
| } |
| |
| int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved, |
| bool force_drop) |
| { |
| BUG_ON(!atomic_read(&bo->tbo.reserved)); |
| |
| if (!(bo->tiling_flags & RADEON_TILING_SURFACE)) |
| return 0; |
| |
| if (force_drop) { |
| radeon_bo_clear_surface_reg(bo); |
| return 0; |
| } |
| |
| if (bo->tbo.mem.mem_type != TTM_PL_VRAM) { |
| if (!has_moved) |
| return 0; |
| |
| if (bo->surface_reg >= 0) |
| radeon_bo_clear_surface_reg(bo); |
| return 0; |
| } |
| |
| if ((bo->surface_reg >= 0) && !has_moved) |
| return 0; |
| |
| return radeon_bo_get_surface_reg(bo); |
| } |
| |
| void radeon_bo_move_notify(struct ttm_buffer_object *bo, |
| struct ttm_mem_reg *mem) |
| { |
| struct radeon_bo *rbo; |
| if (!radeon_ttm_bo_is_radeon_bo(bo)) |
| return; |
| rbo = container_of(bo, struct radeon_bo, tbo); |
| radeon_bo_check_tiling(rbo, 0, 1); |
| } |
| |
| int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo) |
| { |
| struct radeon_device *rdev; |
| struct radeon_bo *rbo; |
| unsigned long offset, size; |
| int r; |
| |
| if (!radeon_ttm_bo_is_radeon_bo(bo)) |
| return 0; |
| rbo = container_of(bo, struct radeon_bo, tbo); |
| radeon_bo_check_tiling(rbo, 0, 0); |
| rdev = rbo->rdev; |
| if (bo->mem.mem_type == TTM_PL_VRAM) { |
| size = bo->mem.num_pages << PAGE_SHIFT; |
| offset = bo->mem.start << PAGE_SHIFT; |
| if ((offset + size) > rdev->mc.visible_vram_size) { |
| /* hurrah the memory is not visible ! */ |
| radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_VRAM); |
| rbo->placement.lpfn = rdev->mc.visible_vram_size >> PAGE_SHIFT; |
| r = ttm_bo_validate(bo, &rbo->placement, false, true, false); |
| if (unlikely(r != 0)) |
| return r; |
| offset = bo->mem.start << PAGE_SHIFT; |
| /* this should not happen */ |
| if ((offset + size) > rdev->mc.visible_vram_size) |
| return -EINVAL; |
| } |
| } |
| return 0; |
| } |
| |
| int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type, bool no_wait, |
| enum ttm_buffer_usage usage) |
| { |
| int r; |
| |
| r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, 0); |
| if (unlikely(r != 0)) |
| return r; |
| spin_lock(&bo->tbo.bdev->fence_lock); |
| if (mem_type) |
| *mem_type = bo->tbo.mem.mem_type; |
| if (bo->tbo.sync_obj) |
| r = ttm_bo_wait(&bo->tbo, true, true, no_wait, usage); |
| spin_unlock(&bo->tbo.bdev->fence_lock); |
| ttm_bo_unreserve(&bo->tbo); |
| return r; |
| } |
| |
| |
| /** |
| * radeon_bo_reserve - reserve bo |
| * @bo: bo structure |
| * @no_wait: don't sleep while trying to reserve (return -EBUSY) |
| * |
| * Returns: |
| * -EBUSY: buffer is busy and @no_wait is true |
| * -ERESTARTSYS: A wait for the buffer to become unreserved was interrupted by |
| * a signal. Release all buffer reservations and return to user-space. |
| */ |
| int radeon_bo_reserve(struct radeon_bo *bo, bool no_wait) |
| { |
| int r; |
| |
| r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, 0); |
| if (unlikely(r != 0)) { |
| if (r != -ERESTARTSYS) |
| dev_err(bo->rdev->dev, "%p reserve failed\n", bo); |
| return r; |
| } |
| return 0; |
| } |