diff options
author | Thomas Hellstrom <thellstrom@vmware.com> | 2010-10-26 19:21:47 (GMT) |
---|---|---|
committer | Dave Airlie <airlied@redhat.com> | 2010-10-27 01:07:46 (GMT) |
commit | 135cba0dc399fdd47bd3ae305c1db75fcd77243f (patch) | |
tree | 3eedcd7c5701dfe05246aca3479ab7396169f2e7 /drivers/gpu/drm/vmwgfx | |
parent | 8f895da57da80b307efa2f94b5d4caf801e959a5 (diff) | |
download | linux-fsl-qoriq-135cba0dc399fdd47bd3ae305c1db75fcd77243f.tar.xz |
vmwgfx: Implement a proper GMR eviction mechanism
Use Ben's new range manager hooks to implement a manager for
GMRs that manages ids rather than ranges.
This means we can use the standard TTM code for binding, unbinding and
eviction.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/vmwgfx')
-rw-r--r-- | drivers/gpu/drm/vmwgfx/Makefile | 2 | ||||
-rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c | 81 | ||||
-rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 16 | ||||
-rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 29 | ||||
-rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c | 29 | ||||
-rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_fb.c | 5 | ||||
-rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c | 38 | ||||
-rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c | 137 | ||||
-rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 75 |
9 files changed, 252 insertions, 160 deletions
diff --git a/drivers/gpu/drm/vmwgfx/Makefile b/drivers/gpu/drm/vmwgfx/Makefile index 4505e17..c9281a1 100644 --- a/drivers/gpu/drm/vmwgfx/Makefile +++ b/drivers/gpu/drm/vmwgfx/Makefile @@ -4,6 +4,6 @@ ccflags-y := -Iinclude/drm vmwgfx-y := vmwgfx_execbuf.o vmwgfx_gmr.o vmwgfx_kms.o vmwgfx_drv.o \ vmwgfx_fb.o vmwgfx_ioctl.o vmwgfx_resource.o vmwgfx_buffer.o \ vmwgfx_fifo.o vmwgfx_irq.o vmwgfx_ldu.o vmwgfx_ttm_glue.o \ - vmwgfx_overlay.o vmwgfx_fence.o + vmwgfx_overlay.o vmwgfx_fence.o vmwgfx_gmrid_manager.o obj-$(CONFIG_DRM_VMWGFX) := vmwgfx.o diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c index 1b3bd8c..80bc37b 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c @@ -39,6 +39,9 @@ static uint32_t vram_ne_placement_flags = TTM_PL_FLAG_VRAM | static uint32_t sys_placement_flags = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED; +static uint32_t gmr_placement_flags = VMW_PL_FLAG_GMR | + TTM_PL_FLAG_CACHED; + struct ttm_placement vmw_vram_placement = { .fpfn = 0, .lpfn = 0, @@ -48,6 +51,20 @@ struct ttm_placement vmw_vram_placement = { .busy_placement = &vram_placement_flags }; +static uint32_t vram_gmr_placement_flags[] = { + TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED, + VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED +}; + +struct ttm_placement vmw_vram_gmr_placement = { + .fpfn = 0, + .lpfn = 0, + .num_placement = 2, + .placement = vram_gmr_placement_flags, + .num_busy_placement = 1, + .busy_placement = &gmr_placement_flags +}; + struct ttm_placement vmw_vram_sys_placement = { .fpfn = 0, .lpfn = 0, @@ -77,27 +94,52 @@ struct ttm_placement vmw_sys_placement = { struct vmw_ttm_backend { struct ttm_backend backend; + struct page **pages; + unsigned long num_pages; + struct vmw_private *dev_priv; + int gmr_id; }; static int vmw_ttm_populate(struct ttm_backend *backend, unsigned long num_pages, struct page **pages, struct page *dummy_read_page) { + struct vmw_ttm_backend *vmw_be = + container_of(backend, struct vmw_ttm_backend, backend); + + vmw_be->pages = pages; + vmw_be->num_pages = num_pages; + return 0; } static int vmw_ttm_bind(struct ttm_backend *backend, struct ttm_mem_reg *bo_mem) { - return 0; + struct vmw_ttm_backend *vmw_be = + container_of(backend, struct vmw_ttm_backend, backend); + + vmw_be->gmr_id = bo_mem->start; + + return vmw_gmr_bind(vmw_be->dev_priv, vmw_be->pages, + vmw_be->num_pages, vmw_be->gmr_id); } static int vmw_ttm_unbind(struct ttm_backend *backend) { + struct vmw_ttm_backend *vmw_be = + container_of(backend, struct vmw_ttm_backend, backend); + + vmw_gmr_unbind(vmw_be->dev_priv, vmw_be->gmr_id); return 0; } static void vmw_ttm_clear(struct ttm_backend *backend) { + struct vmw_ttm_backend *vmw_be = + container_of(backend, struct vmw_ttm_backend, backend); + + vmw_be->pages = NULL; + vmw_be->num_pages = 0; } static void vmw_ttm_destroy(struct ttm_backend *backend) @@ -125,6 +167,7 @@ struct ttm_backend *vmw_ttm_backend_init(struct ttm_bo_device *bdev) return NULL; vmw_be->backend.func = &vmw_ttm_func; + vmw_be->dev_priv = container_of(bdev, struct vmw_private, bdev); return &vmw_be->backend; } @@ -142,7 +185,7 @@ int vmw_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, /* System memory */ man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; - man->available_caching = TTM_PL_MASK_CACHING; + man->available_caching = TTM_PL_FLAG_CACHED; man->default_caching = TTM_PL_FLAG_CACHED; break; case TTM_PL_VRAM: @@ -150,8 +193,20 @@ int vmw_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, man->func = &ttm_bo_manager_func; man->gpu_offset = 0; man->flags = TTM_MEMTYPE_FLAG_FIXED | TTM_MEMTYPE_FLAG_MAPPABLE; - man->available_caching = TTM_PL_MASK_CACHING; - man->default_caching = TTM_PL_FLAG_WC; + man->available_caching = TTM_PL_FLAG_CACHED; + man->default_caching = TTM_PL_FLAG_CACHED; + break; + case VMW_PL_GMR: + /* + * "Guest Memory Regions" is an aperture like feature with + * one slot per bo. There is an upper limit of the number of + * slots as well as the bo size. + */ + man->func = &vmw_gmrid_manager_func; + man->gpu_offset = 0; + man->flags = TTM_MEMTYPE_FLAG_CMA | TTM_MEMTYPE_FLAG_MAPPABLE; + man->available_caching = TTM_PL_FLAG_CACHED; + man->default_caching = TTM_PL_FLAG_CACHED; break; default: DRM_ERROR("Unsupported memory type %u\n", (unsigned)type); @@ -175,18 +230,6 @@ static int vmw_verify_access(struct ttm_buffer_object *bo, struct file *filp) return 0; } -static void vmw_move_notify(struct ttm_buffer_object *bo, - struct ttm_mem_reg *new_mem) -{ - if (new_mem->mem_type != TTM_PL_SYSTEM) - vmw_dmabuf_gmr_unbind(bo); -} - -static void vmw_swap_notify(struct ttm_buffer_object *bo) -{ - vmw_dmabuf_gmr_unbind(bo); -} - static int vmw_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]; @@ -201,7 +244,7 @@ static int vmw_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg return -EINVAL; switch (mem->mem_type) { case TTM_PL_SYSTEM: - /* System memory */ + case VMW_PL_GMR: return 0; case TTM_PL_VRAM: mem->bus.offset = mem->start << PAGE_SHIFT; @@ -277,8 +320,8 @@ struct ttm_bo_driver vmw_bo_driver = { .sync_obj_flush = vmw_sync_obj_flush, .sync_obj_unref = vmw_sync_obj_unref, .sync_obj_ref = vmw_sync_obj_ref, - .move_notify = vmw_move_notify, - .swap_notify = vmw_swap_notify, + .move_notify = NULL, + .swap_notify = NULL, .fault_reserve_notify = &vmw_ttm_fault_reserve_notify, .io_mem_reserve = &vmw_ttm_io_mem_reserve, .io_mem_free = &vmw_ttm_io_mem_free, diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c index f2942b3..d0ef624 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c @@ -260,13 +260,11 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset) idr_init(&dev_priv->context_idr); idr_init(&dev_priv->surface_idr); idr_init(&dev_priv->stream_idr); - ida_init(&dev_priv->gmr_ida); mutex_init(&dev_priv->init_mutex); init_waitqueue_head(&dev_priv->fence_queue); init_waitqueue_head(&dev_priv->fifo_queue); atomic_set(&dev_priv->fence_queue_waiters, 0); atomic_set(&dev_priv->fifo_queue_waiters, 0); - INIT_LIST_HEAD(&dev_priv->gmr_lru); dev_priv->io_start = pci_resource_start(dev->pdev, 0); dev_priv->vram_start = pci_resource_start(dev->pdev, 1); @@ -341,6 +339,14 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset) goto out_err2; } + dev_priv->has_gmr = true; + if (ttm_bo_init_mm(&dev_priv->bdev, VMW_PL_GMR, + dev_priv->max_gmr_ids) != 0) { + DRM_INFO("No GMR memory available. " + "Graphics memory resources are very limited.\n"); + dev_priv->has_gmr = false; + } + dev_priv->mmio_mtrr = drm_mtrr_add(dev_priv->mmio_start, dev_priv->mmio_size, DRM_MTRR_WC); @@ -440,13 +446,14 @@ out_err4: out_err3: drm_mtrr_del(dev_priv->mmio_mtrr, dev_priv->mmio_start, dev_priv->mmio_size, DRM_MTRR_WC); + if (dev_priv->has_gmr) + (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR); (void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM); out_err2: (void)ttm_bo_device_release(&dev_priv->bdev); out_err1: vmw_ttm_global_release(dev_priv); out_err0: - ida_destroy(&dev_priv->gmr_ida); idr_destroy(&dev_priv->surface_idr); idr_destroy(&dev_priv->context_idr); idr_destroy(&dev_priv->stream_idr); @@ -478,10 +485,11 @@ static int vmw_driver_unload(struct drm_device *dev) iounmap(dev_priv->mmio_virt); drm_mtrr_del(dev_priv->mmio_mtrr, dev_priv->mmio_start, dev_priv->mmio_size, DRM_MTRR_WC); + if (dev_priv->has_gmr) + (void)ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR); (void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM); (void)ttm_bo_device_release(&dev_priv->bdev); vmw_ttm_global_release(dev_priv); - ida_destroy(&dev_priv->gmr_ida); idr_destroy(&dev_priv->surface_idr); idr_destroy(&dev_priv->context_idr); idr_destroy(&dev_priv->stream_idr); diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h index 9d55fa8..e7a58d0 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h @@ -49,6 +49,9 @@ #define VMWGFX_MAX_GMRS 2048 #define VMWGFX_MAX_DISPLAYS 16 +#define VMW_PL_GMR TTM_PL_PRIV0 +#define VMW_PL_FLAG_GMR TTM_PL_FLAG_PRIV0 + struct vmw_fpriv { struct drm_master *locked_master; struct ttm_object_file *tfile; @@ -57,8 +60,6 @@ struct vmw_fpriv { struct vmw_dma_buffer { struct ttm_buffer_object base; struct list_head validate_list; - struct list_head gmr_lru; - uint32_t gmr_id; bool gmr_bound; uint32_t cur_validate_node; bool on_validate_list; @@ -184,6 +185,7 @@ struct vmw_private { uint32_t capabilities; uint32_t max_gmr_descriptors; uint32_t max_gmr_ids; + bool has_gmr; struct mutex hw_mutex; /* @@ -266,14 +268,6 @@ struct vmw_private { struct mutex cmdbuf_mutex; /** - * GMR management. Protected by the lru spinlock. - */ - - struct ida gmr_ida; - struct list_head gmr_lru; - - - /** * Operating mode. */ @@ -334,7 +328,9 @@ void vmw_3d_resource_dec(struct vmw_private *dev_priv); */ extern int vmw_gmr_bind(struct vmw_private *dev_priv, - struct ttm_buffer_object *bo); + struct page *pages[], + unsigned long num_pages, + int gmr_id); extern void vmw_gmr_unbind(struct vmw_private *dev_priv, int gmr_id); /** @@ -383,14 +379,10 @@ extern uint32_t vmw_dmabuf_validate_node(struct ttm_buffer_object *bo, extern void vmw_dmabuf_validate_clear(struct ttm_buffer_object *bo); extern int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile, uint32_t id, struct vmw_dma_buffer **out); -extern uint32_t vmw_dmabuf_gmr(struct ttm_buffer_object *bo); -extern void vmw_dmabuf_set_gmr(struct ttm_buffer_object *bo, uint32_t id); -extern int vmw_gmr_id_alloc(struct vmw_private *dev_priv, uint32_t *p_id); extern int vmw_dmabuf_to_start_of_vram(struct vmw_private *vmw_priv, struct vmw_dma_buffer *bo); extern int vmw_dmabuf_from_vram(struct vmw_private *vmw_priv, struct vmw_dma_buffer *bo); -extern void vmw_dmabuf_gmr_unbind(struct ttm_buffer_object *bo); extern int vmw_stream_claim_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); extern int vmw_stream_unref_ioctl(struct drm_device *dev, void *data, @@ -442,6 +434,7 @@ extern int vmw_mmap(struct file *filp, struct vm_area_struct *vma); extern struct ttm_placement vmw_vram_placement; extern struct ttm_placement vmw_vram_ne_placement; extern struct ttm_placement vmw_vram_sys_placement; +extern struct ttm_placement vmw_vram_gmr_placement; extern struct ttm_placement vmw_sys_placement; extern struct ttm_bo_driver vmw_bo_driver; extern int vmw_dma_quiescent(struct drm_device *dev); @@ -544,6 +537,12 @@ int vmw_overlay_num_overlays(struct vmw_private *dev_priv); int vmw_overlay_num_free_overlays(struct vmw_private *dev_priv); /** + * GMR Id manager + */ + +extern const struct ttm_mem_type_manager_func vmw_gmrid_manager_func; + +/** * Inline helper functions */ diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c index 8e39685..51d9f9f 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c @@ -538,8 +538,11 @@ static void vmw_apply_relocations(struct vmw_sw_context *sw_context) reloc = &sw_context->relocs[i]; validate = &sw_context->val_bufs[reloc->index]; bo = validate->bo; - reloc->location->offset += bo->offset; - reloc->location->gmrId = vmw_dmabuf_gmr(bo); + if (bo->mem.mem_type == TTM_PL_VRAM) { + reloc->location->offset += bo->offset; + reloc->location->gmrId = SVGA_GMR_FRAMEBUFFER; + } else + reloc->location->gmrId = bo->mem.start; } vmw_free_relocations(sw_context); } @@ -563,25 +566,14 @@ static int vmw_validate_single_buffer(struct vmw_private *dev_priv, { int ret; - if (vmw_dmabuf_gmr(bo) != SVGA_GMR_NULL) - return 0; - /** - * Put BO in VRAM, only if there is space. + * Put BO in VRAM if there is space, otherwise as a GMR. + * If there is no space in VRAM and GMR ids are all used up, + * start evicting GMRs to make room. If the DMA buffer can't be + * used as a GMR, this will return -ENOMEM. */ - ret = ttm_bo_validate(bo, &vmw_vram_sys_placement, true, false, false); - if (unlikely(ret == -ERESTARTSYS)) - return ret; - - /** - * Otherwise, set it up as GMR. - */ - - if (vmw_dmabuf_gmr(bo) != SVGA_GMR_NULL) - return 0; - - ret = vmw_gmr_bind(dev_priv, bo); + ret = ttm_bo_validate(bo, &vmw_vram_gmr_placement, true, false, false); if (likely(ret == 0 || ret == -ERESTARTSYS)) return ret; @@ -590,6 +582,7 @@ static int vmw_validate_single_buffer(struct vmw_private *dev_priv, * previous contents. */ + DRM_INFO("Falling through to VRAM.\n"); ret = ttm_bo_validate(bo, &vmw_vram_placement, true, false, false); return ret; } diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c index e730418..41d9a5b 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c @@ -612,7 +612,6 @@ int vmw_dmabuf_to_start_of_vram(struct vmw_private *vmw_priv, { struct ttm_buffer_object *bo = &vmw_bo->base; struct ttm_placement ne_placement = vmw_vram_ne_placement; - struct drm_mm_node *mm_node; int ret = 0; ne_placement.lpfn = bo->num_pages; @@ -626,9 +625,9 @@ int vmw_dmabuf_to_start_of_vram(struct vmw_private *vmw_priv, if (unlikely(ret != 0)) goto err_unlock; - mm_node = bo->mem.mm_node; if (bo->mem.mem_type == TTM_PL_VRAM && - mm_node->start < bo->num_pages) + bo->mem.start < bo->num_pages && + bo->mem.start > 0) (void) ttm_bo_validate(bo, &vmw_sys_placement, false, false, false); diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c b/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c index 5f8908a..de0c594 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_gmr.c @@ -146,7 +146,7 @@ static void vmw_gmr_fire_descriptors(struct vmw_private *dev_priv, */ static unsigned long vmw_gmr_count_descriptors(struct page *pages[], - unsigned long num_pages) + unsigned long num_pages) { unsigned long prev_pfn = ~(0UL); unsigned long pfn; @@ -163,45 +163,33 @@ static unsigned long vmw_gmr_count_descriptors(struct page *pages[], } int vmw_gmr_bind(struct vmw_private *dev_priv, - struct ttm_buffer_object *bo) + struct page *pages[], + unsigned long num_pages, + int gmr_id) { - struct ttm_tt *ttm = bo->ttm; - unsigned long descriptors; - int ret; - uint32_t id; struct list_head desc_pages; + int ret; - if (!(dev_priv->capabilities & SVGA_CAP_GMR)) + if (unlikely(!(dev_priv->capabilities & SVGA_CAP_GMR))) return -EINVAL; - ret = ttm_tt_populate(ttm); - if (unlikely(ret != 0)) - return ret; - - descriptors = vmw_gmr_count_descriptors(ttm->pages, ttm->num_pages); - if (unlikely(descriptors > dev_priv->max_gmr_descriptors)) + if (vmw_gmr_count_descriptors(pages, num_pages) > + dev_priv->max_gmr_descriptors) return -EINVAL; INIT_LIST_HEAD(&desc_pages); - ret = vmw_gmr_build_descriptors(&desc_pages, ttm->pages, - ttm->num_pages); - if (unlikely(ret != 0)) - return ret; - ret = vmw_gmr_id_alloc(dev_priv, &id); + ret = vmw_gmr_build_descriptors(&desc_pages, pages, num_pages); if (unlikely(ret != 0)) - goto out_no_id; + return ret; - vmw_gmr_fire_descriptors(dev_priv, id, &desc_pages); + vmw_gmr_fire_descriptors(dev_priv, gmr_id, &desc_pages); vmw_gmr_free_descriptors(&desc_pages); - vmw_dmabuf_set_gmr(bo, id); - return 0; -out_no_id: - vmw_gmr_free_descriptors(&desc_pages); - return ret; + return 0; } + void vmw_gmr_unbind(struct vmw_private *dev_priv, int gmr_id) { mutex_lock(&dev_priv->hw_mutex); diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c b/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c new file mode 100644 index 0000000..ac6e0d1 --- /dev/null +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c @@ -0,0 +1,137 @@ +/************************************************************************** + * + * Copyright (c) 2007-2010 VMware, Inc., Palo Alto, CA., USA + * 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 above copyright notice and this permission notice (including the + * next paragraph) 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 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. + * + **************************************************************************/ +/* + * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com> + */ + +#include "vmwgfx_drv.h" +#include "ttm/ttm_module.h" +#include "ttm/ttm_bo_driver.h" +#include "ttm/ttm_placement.h" +#include <linux/idr.h> +#include <linux/spinlock.h> +#include <linux/kernel.h> + +struct vmwgfx_gmrid_man { + spinlock_t lock; + struct ida gmr_ida; + uint32_t max_gmr_ids; +}; + +static int vmw_gmrid_man_get_node(struct ttm_mem_type_manager *man, + struct ttm_buffer_object *bo, + struct ttm_placement *placement, + struct ttm_mem_reg *mem) +{ + struct vmwgfx_gmrid_man *gman = + (struct vmwgfx_gmrid_man *)man->priv; + int ret; + int id; + + mem->mm_node = NULL; + + do { + if (unlikely(ida_pre_get(&gman->gmr_ida, GFP_KERNEL) == 0)) + return -ENOMEM; + + spin_lock(&gman->lock); + ret = ida_get_new(&gman->gmr_ida, &id); + + if (unlikely(ret == 0 && id >= gman->max_gmr_ids)) { + ida_remove(&gman->gmr_ida, id); + spin_unlock(&gman->lock); + return 0; + } + + spin_unlock(&gman->lock); + + } while (ret == -EAGAIN); + + if (likely(ret == 0)) { + mem->mm_node = gman; + mem->start = id; + } + + return ret; +} + +static void vmw_gmrid_man_put_node(struct ttm_mem_type_manager *man, + struct ttm_mem_reg *mem) +{ + struct vmwgfx_gmrid_man *gman = + (struct vmwgfx_gmrid_man *)man->priv; + + if (mem->mm_node) { + spin_lock(&gman->lock); + ida_remove(&gman->gmr_ida, mem->start); + spin_unlock(&gman->lock); + mem->mm_node = NULL; + } +} + +static int vmw_gmrid_man_init(struct ttm_mem_type_manager *man, + unsigned long p_size) +{ + struct vmwgfx_gmrid_man *gman = + kzalloc(sizeof(*gman), GFP_KERNEL); + + if (unlikely(gman == NULL)) + return -ENOMEM; + + spin_lock_init(&gman->lock); + ida_init(&gman->gmr_ida); + gman->max_gmr_ids = p_size; + man->priv = (void *) gman; + return 0; +} + +static int vmw_gmrid_man_takedown(struct ttm_mem_type_manager *man) +{ + struct vmwgfx_gmrid_man *gman = + (struct vmwgfx_gmrid_man *)man->priv; + + if (gman) { + ida_destroy(&gman->gmr_ida); + kfree(gman); + } + return 0; +} + +static void vmw_gmrid_man_debug(struct ttm_mem_type_manager *man, + const char *prefix) +{ + printk(KERN_INFO "%s: No debug info available for the GMR " + "id manager.\n", prefix); +} + +const struct ttm_mem_type_manager_func vmw_gmrid_manager_func = { + vmw_gmrid_man_init, + vmw_gmrid_man_takedown, + vmw_gmrid_man_get_node, + vmw_gmrid_man_put_node, + vmw_gmrid_man_debug +}; diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c index c8c40e9..36e129f 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c @@ -765,28 +765,11 @@ static size_t vmw_dmabuf_acc_size(struct ttm_bo_global *glob, return bo_user_size + page_array_size; } -void vmw_dmabuf_gmr_unbind(struct ttm_buffer_object *bo) -{ - struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo); - struct ttm_bo_global *glob = bo->glob; - struct vmw_private *dev_priv = - container_of(bo->bdev, struct vmw_private, bdev); - - if (vmw_bo->gmr_bound) { - vmw_gmr_unbind(dev_priv, vmw_bo->gmr_id); - spin_lock(&glob->lru_lock); - ida_remove(&dev_priv->gmr_ida, vmw_bo->gmr_id); - spin_unlock(&glob->lru_lock); - vmw_bo->gmr_bound = false; - } -} - void vmw_dmabuf_bo_free(struct ttm_buffer_object *bo) { struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo); struct ttm_bo_global *glob = bo->glob; - vmw_dmabuf_gmr_unbind(bo); ttm_mem_global_free(glob->mem_glob, bo->acc_size); kfree(vmw_bo); } @@ -818,10 +801,7 @@ int vmw_dmabuf_init(struct vmw_private *dev_priv, memset(vmw_bo, 0, sizeof(*vmw_bo)); - INIT_LIST_HEAD(&vmw_bo->gmr_lru); INIT_LIST_HEAD(&vmw_bo->validate_list); - vmw_bo->gmr_id = 0; - vmw_bo->gmr_bound = false; ret = ttm_bo_init(bdev, &vmw_bo->base, size, ttm_bo_type_device, placement, @@ -835,7 +815,6 @@ static void vmw_user_dmabuf_destroy(struct ttm_buffer_object *bo) struct vmw_user_dma_buffer *vmw_user_bo = vmw_user_dma_buffer(bo); struct ttm_bo_global *glob = bo->glob; - vmw_dmabuf_gmr_unbind(bo); ttm_mem_global_free(glob->mem_glob, bo->acc_size); kfree(vmw_user_bo); } @@ -938,25 +917,6 @@ void vmw_dmabuf_validate_clear(struct ttm_buffer_object *bo) vmw_bo->on_validate_list = false; } -uint32_t vmw_dmabuf_gmr(struct ttm_buffer_object *bo) -{ - struct vmw_dma_buffer *vmw_bo; - - if (bo->mem.mem_type == TTM_PL_VRAM) - return SVGA_GMR_FRAMEBUFFER; - - vmw_bo = vmw_dma_buffer(bo); - - return (vmw_bo->gmr_bound) ? vmw_bo->gmr_id : SVGA_GMR_NULL; -} - -void vmw_dmabuf_set_gmr(struct ttm_buffer_object *bo, uint32_t id) -{ - struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo); - vmw_bo->gmr_bound = true; - vmw_bo->gmr_id = id; -} - int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile, uint32_t handle, struct vmw_dma_buffer **out) { @@ -985,41 +945,6 @@ int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile, return 0; } -/** - * TODO: Implement a gmr id eviction mechanism. Currently we just fail - * when we're out of ids, causing GMR space to be allocated - * out of VRAM. - */ - -int vmw_gmr_id_alloc(struct vmw_private *dev_priv, uint32_t *p_id) -{ - struct ttm_bo_global *glob = dev_priv->bdev.glob; - int id; - int ret; - - do { - if (unlikely(ida_pre_get(&dev_priv->gmr_ida, GFP_KERNEL) == 0)) - return -ENOMEM; - - spin_lock(&glob->lru_lock); - ret = ida_get_new(&dev_priv->gmr_ida, &id); - spin_unlock(&glob->lru_lock); - } while (ret == -EAGAIN); - - if (unlikely(ret != 0)) - return ret; - - if (unlikely(id >= dev_priv->max_gmr_ids)) { - spin_lock(&glob->lru_lock); - ida_remove(&dev_priv->gmr_ida, id); - spin_unlock(&glob->lru_lock); - return -EBUSY; - } - - *p_id = (uint32_t) id; - return 0; -} - /* * Stream management */ |