diff options
author | 2015-08-04 12:17:53 -0700 | |
---|---|---|
committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/gpu/drm/cirrus/cirrus_ttm.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/gpu/drm/cirrus/cirrus_ttm.c')
-rw-r--r-- | kernel/drivers/gpu/drm/cirrus/cirrus_ttm.c | 419 |
1 files changed, 419 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/cirrus/cirrus_ttm.c b/kernel/drivers/gpu/drm/cirrus/cirrus_ttm.c new file mode 100644 index 000000000..dfffd5285 --- /dev/null +++ b/kernel/drivers/gpu/drm/cirrus/cirrus_ttm.c @@ -0,0 +1,419 @@ +/* + * Copyright 2012 Red Hat 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, 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: Dave Airlie <airlied@redhat.com> + */ +#include <drm/drmP.h> +#include "cirrus_drv.h" +#include <ttm/ttm_page_alloc.h> + +static inline struct cirrus_device * +cirrus_bdev(struct ttm_bo_device *bd) +{ + return container_of(bd, struct cirrus_device, ttm.bdev); +} + +static int +cirrus_ttm_mem_global_init(struct drm_global_reference *ref) +{ + return ttm_mem_global_init(ref->object); +} + +static void +cirrus_ttm_mem_global_release(struct drm_global_reference *ref) +{ + ttm_mem_global_release(ref->object); +} + +static int cirrus_ttm_global_init(struct cirrus_device *cirrus) +{ + struct drm_global_reference *global_ref; + int r; + + global_ref = &cirrus->ttm.mem_global_ref; + global_ref->global_type = DRM_GLOBAL_TTM_MEM; + global_ref->size = sizeof(struct ttm_mem_global); + global_ref->init = &cirrus_ttm_mem_global_init; + global_ref->release = &cirrus_ttm_mem_global_release; + r = drm_global_item_ref(global_ref); + if (r != 0) { + DRM_ERROR("Failed setting up TTM memory accounting " + "subsystem.\n"); + return r; + } + + cirrus->ttm.bo_global_ref.mem_glob = + cirrus->ttm.mem_global_ref.object; + global_ref = &cirrus->ttm.bo_global_ref.ref; + global_ref->global_type = DRM_GLOBAL_TTM_BO; + global_ref->size = sizeof(struct ttm_bo_global); + global_ref->init = &ttm_bo_global_init; + global_ref->release = &ttm_bo_global_release; + r = drm_global_item_ref(global_ref); + if (r != 0) { + DRM_ERROR("Failed setting up TTM BO subsystem.\n"); + drm_global_item_unref(&cirrus->ttm.mem_global_ref); + return r; + } + return 0; +} + +static void +cirrus_ttm_global_release(struct cirrus_device *cirrus) +{ + if (cirrus->ttm.mem_global_ref.release == NULL) + return; + + drm_global_item_unref(&cirrus->ttm.bo_global_ref.ref); + drm_global_item_unref(&cirrus->ttm.mem_global_ref); + cirrus->ttm.mem_global_ref.release = NULL; +} + + +static void cirrus_bo_ttm_destroy(struct ttm_buffer_object *tbo) +{ + struct cirrus_bo *bo; + + bo = container_of(tbo, struct cirrus_bo, bo); + + drm_gem_object_release(&bo->gem); + kfree(bo); +} + +static bool cirrus_ttm_bo_is_cirrus_bo(struct ttm_buffer_object *bo) +{ + if (bo->destroy == &cirrus_bo_ttm_destroy) + return true; + return false; +} + +static int +cirrus_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, + struct ttm_mem_type_manager *man) +{ + switch (type) { + case TTM_PL_SYSTEM: + man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; + man->available_caching = TTM_PL_MASK_CACHING; + man->default_caching = TTM_PL_FLAG_CACHED; + break; + case TTM_PL_VRAM: + man->func = &ttm_bo_manager_func; + man->flags = TTM_MEMTYPE_FLAG_FIXED | + TTM_MEMTYPE_FLAG_MAPPABLE; + man->available_caching = TTM_PL_FLAG_UNCACHED | + TTM_PL_FLAG_WC; + man->default_caching = TTM_PL_FLAG_WC; + break; + default: + DRM_ERROR("Unsupported memory type %u\n", (unsigned)type); + return -EINVAL; + } + return 0; +} + +static void +cirrus_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl) +{ + struct cirrus_bo *cirrusbo = cirrus_bo(bo); + + if (!cirrus_ttm_bo_is_cirrus_bo(bo)) + return; + + cirrus_ttm_placement(cirrusbo, TTM_PL_FLAG_SYSTEM); + *pl = cirrusbo->placement; +} + +static int cirrus_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp) +{ + struct cirrus_bo *cirrusbo = cirrus_bo(bo); + + return drm_vma_node_verify_access(&cirrusbo->gem.vma_node, filp); +} + +static int cirrus_ttm_io_mem_reserve(struct ttm_bo_device *bdev, + struct ttm_mem_reg *mem) +{ + struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; + struct cirrus_device *cirrus = cirrus_bdev(bdev); + + mem->bus.addr = NULL; + mem->bus.offset = 0; + mem->bus.size = mem->num_pages << PAGE_SHIFT; + mem->bus.base = 0; + mem->bus.is_iomem = false; + if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE)) + return -EINVAL; + switch (mem->mem_type) { + case TTM_PL_SYSTEM: + /* system memory */ + return 0; + case TTM_PL_VRAM: + mem->bus.offset = mem->start << PAGE_SHIFT; + mem->bus.base = pci_resource_start(cirrus->dev->pdev, 0); + mem->bus.is_iomem = true; + break; + default: + return -EINVAL; + break; + } + return 0; +} + +static void cirrus_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) +{ +} + +static int cirrus_bo_move(struct ttm_buffer_object *bo, + bool evict, bool interruptible, + bool no_wait_gpu, + struct ttm_mem_reg *new_mem) +{ + int r; + r = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem); + return r; +} + + +static void cirrus_ttm_backend_destroy(struct ttm_tt *tt) +{ + ttm_tt_fini(tt); + kfree(tt); +} + +static struct ttm_backend_func cirrus_tt_backend_func = { + .destroy = &cirrus_ttm_backend_destroy, +}; + + +static struct ttm_tt *cirrus_ttm_tt_create(struct ttm_bo_device *bdev, + unsigned long size, uint32_t page_flags, + struct page *dummy_read_page) +{ + struct ttm_tt *tt; + + tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL); + if (tt == NULL) + return NULL; + tt->func = &cirrus_tt_backend_func; + if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) { + kfree(tt); + return NULL; + } + return tt; +} + +static int cirrus_ttm_tt_populate(struct ttm_tt *ttm) +{ + return ttm_pool_populate(ttm); +} + +static void cirrus_ttm_tt_unpopulate(struct ttm_tt *ttm) +{ + ttm_pool_unpopulate(ttm); +} + +struct ttm_bo_driver cirrus_bo_driver = { + .ttm_tt_create = cirrus_ttm_tt_create, + .ttm_tt_populate = cirrus_ttm_tt_populate, + .ttm_tt_unpopulate = cirrus_ttm_tt_unpopulate, + .init_mem_type = cirrus_bo_init_mem_type, + .evict_flags = cirrus_bo_evict_flags, + .move = cirrus_bo_move, + .verify_access = cirrus_bo_verify_access, + .io_mem_reserve = &cirrus_ttm_io_mem_reserve, + .io_mem_free = &cirrus_ttm_io_mem_free, +}; + +int cirrus_mm_init(struct cirrus_device *cirrus) +{ + int ret; + struct drm_device *dev = cirrus->dev; + struct ttm_bo_device *bdev = &cirrus->ttm.bdev; + + ret = cirrus_ttm_global_init(cirrus); + if (ret) + return ret; + + ret = ttm_bo_device_init(&cirrus->ttm.bdev, + cirrus->ttm.bo_global_ref.ref.object, + &cirrus_bo_driver, + dev->anon_inode->i_mapping, + DRM_FILE_PAGE_OFFSET, + true); + if (ret) { + DRM_ERROR("Error initialising bo driver; %d\n", ret); + return ret; + } + + ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM, + cirrus->mc.vram_size >> PAGE_SHIFT); + if (ret) { + DRM_ERROR("Failed ttm VRAM init: %d\n", ret); + return ret; + } + + cirrus->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0), + pci_resource_len(dev->pdev, 0)); + + cirrus->mm_inited = true; + return 0; +} + +void cirrus_mm_fini(struct cirrus_device *cirrus) +{ + if (!cirrus->mm_inited) + return; + + ttm_bo_device_release(&cirrus->ttm.bdev); + + cirrus_ttm_global_release(cirrus); + + arch_phys_wc_del(cirrus->fb_mtrr); + cirrus->fb_mtrr = 0; +} + +void cirrus_ttm_placement(struct cirrus_bo *bo, int domain) +{ + u32 c = 0; + unsigned i; + bo->placement.placement = bo->placements; + bo->placement.busy_placement = bo->placements; + if (domain & TTM_PL_FLAG_VRAM) + bo->placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM; + if (domain & TTM_PL_FLAG_SYSTEM) + bo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; + if (!c) + bo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; + bo->placement.num_placement = c; + bo->placement.num_busy_placement = c; + for (i = 0; i < c; ++i) { + bo->placements[i].fpfn = 0; + bo->placements[i].lpfn = 0; + } +} + +int cirrus_bo_create(struct drm_device *dev, int size, int align, + uint32_t flags, struct cirrus_bo **pcirrusbo) +{ + struct cirrus_device *cirrus = dev->dev_private; + struct cirrus_bo *cirrusbo; + size_t acc_size; + int ret; + + cirrusbo = kzalloc(sizeof(struct cirrus_bo), GFP_KERNEL); + if (!cirrusbo) + return -ENOMEM; + + ret = drm_gem_object_init(dev, &cirrusbo->gem, size); + if (ret) { + kfree(cirrusbo); + return ret; + } + + cirrusbo->bo.bdev = &cirrus->ttm.bdev; + + cirrus_ttm_placement(cirrusbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM); + + acc_size = ttm_bo_dma_acc_size(&cirrus->ttm.bdev, size, + sizeof(struct cirrus_bo)); + + ret = ttm_bo_init(&cirrus->ttm.bdev, &cirrusbo->bo, size, + ttm_bo_type_device, &cirrusbo->placement, + align >> PAGE_SHIFT, false, NULL, acc_size, + NULL, NULL, cirrus_bo_ttm_destroy); + if (ret) + return ret; + + *pcirrusbo = cirrusbo; + return 0; +} + +static inline u64 cirrus_bo_gpu_offset(struct cirrus_bo *bo) +{ + return bo->bo.offset; +} + +int cirrus_bo_pin(struct cirrus_bo *bo, u32 pl_flag, u64 *gpu_addr) +{ + int i, ret; + + if (bo->pin_count) { + bo->pin_count++; + if (gpu_addr) + *gpu_addr = cirrus_bo_gpu_offset(bo); + } + + cirrus_ttm_placement(bo, pl_flag); + for (i = 0; i < bo->placement.num_placement; i++) + bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; + ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); + if (ret) + return ret; + + bo->pin_count = 1; + if (gpu_addr) + *gpu_addr = cirrus_bo_gpu_offset(bo); + return 0; +} + +int cirrus_bo_push_sysram(struct cirrus_bo *bo) +{ + int i, ret; + if (!bo->pin_count) { + DRM_ERROR("unpin bad %p\n", bo); + return 0; + } + bo->pin_count--; + if (bo->pin_count) + return 0; + + if (bo->kmap.virtual) + ttm_bo_kunmap(&bo->kmap); + + cirrus_ttm_placement(bo, TTM_PL_FLAG_SYSTEM); + for (i = 0; i < bo->placement.num_placement ; i++) + bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; + + ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); + if (ret) { + DRM_ERROR("pushing to VRAM failed\n"); + return ret; + } + return 0; +} + +int cirrus_mmap(struct file *filp, struct vm_area_struct *vma) +{ + struct drm_file *file_priv; + struct cirrus_device *cirrus; + + if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) + return -EINVAL; + + file_priv = filp->private_data; + cirrus = file_priv->minor->dev->dev_private; + return ttm_bo_mmap(filp, vma, &cirrus->ttm.bdev); +} |