diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_object.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_object.c | 665 |
1 files changed, 665 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c new file mode 100644 index 00000000..df6a4dbd --- /dev/null +++ b/drivers/gpu/drm/radeon/radeon_object.c @@ -0,0 +1,665 @@ +/* + * 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. + */ + +void radeon_bo_clear_va(struct radeon_bo *bo) +{ + struct radeon_bo_va *bo_va, *tmp; + + list_for_each_entry_safe(bo_va, tmp, &bo->va, bo_list) { + /* remove from all vm address space */ + mutex_lock(&bo_va->vm->mutex); + list_del(&bo_va->vm_list); + mutex_unlock(&bo_va->vm->mutex); + list_del(&bo_va->bo_list); + kfree(bo_va); + } +} + +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); + radeon_bo_clear_va(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; + size_t acc_size; + 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; + } + + acc_size = ttm_bo_dma_acc_size(&rdev->mman.bdev, size, + sizeof(struct radeon_bo)); + +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); + INIT_LIST_HEAD(&bo->va); + 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, + acc_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_restricted(struct radeon_bo *bo, u32 domain, u64 max_offset, + u64 *gpu_addr) +{ + int r, i; + + if (bo->pin_count) { + bo->pin_count++; + if (gpu_addr) + *gpu_addr = radeon_bo_gpu_offset(bo); + + if (max_offset != 0) { + u64 domain_start; + + if (domain == RADEON_GEM_DOMAIN_VRAM) + domain_start = bo->rdev->mc.vram_start; + else + domain_start = bo->rdev->mc.gtt_start; + WARN_ON_ONCE(max_offset < + (radeon_bo_gpu_offset(bo) - domain_start)); + } + + 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; + } + if (max_offset) { + u64 lpfn = max_offset >> PAGE_SHIFT; + + if (!bo->placement.lpfn) + bo->placement.lpfn = bo->rdev->mc.gtt_size >> PAGE_SHIFT; + + if (lpfn < bo->placement.lpfn) + bo->placement.lpfn = lpfn; + } + 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_pin(struct radeon_bo *bo, u32 domain, u64 *gpu_addr) +{ + return radeon_bo_pin_restricted(bo, domain, 0, gpu_addr); +} + +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) +{ + struct radeon_device *rdev = bo->rdev; + int r; + + if (rdev->family >= CHIP_CEDAR) { + unsigned bankw, bankh, mtaspect, tilesplit, stilesplit; + + bankw = (tiling_flags >> RADEON_TILING_EG_BANKW_SHIFT) & RADEON_TILING_EG_BANKW_MASK; + bankh = (tiling_flags >> RADEON_TILING_EG_BANKH_SHIFT) & RADEON_TILING_EG_BANKH_MASK; + mtaspect = (tiling_flags >> RADEON_TILING_EG_MACRO_TILE_ASPECT_SHIFT) & RADEON_TILING_EG_MACRO_TILE_ASPECT_MASK; + tilesplit = (tiling_flags >> RADEON_TILING_EG_TILE_SPLIT_SHIFT) & RADEON_TILING_EG_TILE_SPLIT_MASK; + stilesplit = (tiling_flags >> RADEON_TILING_EG_STENCIL_TILE_SPLIT_SHIFT) & RADEON_TILING_EG_STENCIL_TILE_SPLIT_MASK; + switch (bankw) { + case 0: + case 1: + case 2: + case 4: + case 8: + break; + default: + return -EINVAL; + } + switch (bankh) { + case 0: + case 1: + case 2: + case 4: + case 8: + break; + default: + return -EINVAL; + } + switch (mtaspect) { + case 0: + case 1: + case 2: + case 4: + case 8: + break; + default: + return -EINVAL; + } + if (tilesplit > 6) { + return -EINVAL; + } + if (stilesplit > 6) { + return -EINVAL; + } + } + 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); + radeon_vm_bo_invalidate(rbo->rdev, rbo); +} + +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) +{ + 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); + 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; +} + +/* object have to be reserved */ +struct radeon_bo_va *radeon_bo_va(struct radeon_bo *rbo, struct radeon_vm *vm) +{ + struct radeon_bo_va *bo_va; + + list_for_each_entry(bo_va, &rbo->va, bo_list) { + if (bo_va->vm == vm) { + return bo_va; + } + } + return NULL; +} |