Release 4.7 drivers/gpu/drm/qxl/qxl_ttm.c

Directory: drivers/gpu/drm/qxl
/*
 * Copyright 2013 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, 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: Dave Airlie
 *          Alon Levy
 */

#include <ttm/ttm_bo_api.h>
#include <ttm/ttm_bo_driver.h>
#include <ttm/ttm_placement.h>
#include <ttm/ttm_page_alloc.h>
#include <ttm/ttm_module.h>
#include <drm/drmP.h>
#include <drm/drm.h>
#include <drm/qxl_drm.h>
#include "qxl_drv.h"
#include "qxl_object.h"

#include <linux/delay.h>
static int qxl_ttm_debugfs_init(struct qxl_device *qdev);



static struct qxl_device *qxl_get_qdev(struct ttm_bo_device *bdev)
{
	struct qxl_mman *mman;
	struct qxl_device *qdev;

	mman = container_of(bdev, struct qxl_mman, bdev);
	qdev = container_of(mman, struct qxl_device, mman);
	return qdev;
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 50 100.00% 1 100.00%
Total 50 100.00% 1 100.00%



static int qxl_ttm_mem_global_init(struct drm_global_reference *ref)
{
	return ttm_mem_global_init(ref->object);
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 19 100.00% 1 100.00%
Total 19 100.00% 1 100.00%



static void qxl_ttm_mem_global_release(struct drm_global_reference *ref)
{
	ttm_mem_global_release(ref->object);
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%



static int qxl_ttm_global_init(struct qxl_device *qdev)
{
	struct drm_global_reference *global_ref;
	int r;

	qdev->mman.mem_global_referenced = false;
	global_ref = &qdev->mman.mem_global_ref;
	global_ref->global_type = DRM_GLOBAL_TTM_MEM;
	global_ref->size = sizeof(struct ttm_mem_global);
	global_ref->init = &qxl_ttm_mem_global_init;
	global_ref->release = &qxl_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;
	}

	qdev->mman.bo_global_ref.mem_glob =
		qdev->mman.mem_global_ref.object;
	global_ref = &qdev->mman.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(&qdev->mman.mem_global_ref);
		return r;
	}

	qdev->mman.mem_global_referenced = true;
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 191 100.00% 1 100.00%
Total 191 100.00% 1 100.00%



static void qxl_ttm_global_fini(struct qxl_device *qdev)
{
	if (qdev->mman.mem_global_referenced) {
		drm_global_item_unref(&qdev->mman.bo_global_ref.ref);
		drm_global_item_unref(&qdev->mman.mem_global_ref);
		qdev->mman.mem_global_referenced = false;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 51 100.00% 1 100.00%
Total 51 100.00% 1 100.00%


static struct vm_operations_struct qxl_ttm_vm_ops;

static const struct vm_operations_struct *ttm_vm_ops;



static int qxl_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
	struct ttm_buffer_object *bo;
	int r;

	bo = (struct ttm_buffer_object *)vma->vm_private_data;
	if (bo == NULL)
		return VM_FAULT_NOPAGE;
	r = ttm_vm_ops->fault(vma, vmf);
	return r;
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 58 100.00% 1 100.00%
Total 58 100.00% 1 100.00%



int qxl_mmap(struct file *filp, struct vm_area_struct *vma)
{
	struct drm_file *file_priv;
	struct qxl_device *qdev;
	int r;

	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) {
		pr_info("%s: vma->vm_pgoff (%ld) < DRM_FILE_PAGE_OFFSET\n",
			__func__, vma->vm_pgoff);
		return -EINVAL;
	}

	file_priv = filp->private_data;
	qdev = file_priv->minor->dev->dev_private;
	if (qdev == NULL) {
		DRM_ERROR(
		 "filp->private_data->minor->dev->dev_private == NULL\n");
		return -EINVAL;
	}
	QXL_INFO(qdev, "%s: filp->private_data = 0x%p, vma->vm_pgoff = %lx\n",
		 __func__, filp->private_data, vma->vm_pgoff);

	r = ttm_bo_mmap(filp, vma, &qdev->mman.bdev);
	if (unlikely(r != 0))
		return r;
	if (unlikely(ttm_vm_ops == NULL)) {
		ttm_vm_ops = vma->vm_ops;
		qxl_ttm_vm_ops = *ttm_vm_ops;
		qxl_ttm_vm_ops.fault = &qxl_ttm_fault;
	}
	vma->vm_ops = &qxl_ttm_vm_ops;
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 171 98.84% 1 50.00%
daniel vetter daniel vetter 2 1.16% 1 50.00%
Total 173 100.00% 2 100.00%



static int qxl_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
{
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 17 100.00% 1 100.00%
Total 17 100.00% 1 100.00%



static int qxl_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
			     struct ttm_mem_type_manager *man)
{
	switch (type) {
	case TTM_PL_SYSTEM:
		/* System memory */
		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:
	case TTM_PL_PRIV0:
		/* "On-card" video ram */
		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_CACHED;
		break;
	default:
		DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
		return -EINVAL;
	}
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 107 100.00% 1 100.00%
Total 107 100.00% 1 100.00%



static void qxl_evict_flags(struct ttm_buffer_object *bo,
				struct ttm_placement *placement)
{
	struct qxl_bo *qbo;
	static struct ttm_place placements = {
		.fpfn = 0,
		.lpfn = 0,
		.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
	};

	if (!qxl_ttm_bo_is_qxl_bo(bo)) {
		placement->placement = &placements;
		placement->busy_placement = &placements;
		placement->num_placement = 1;
		placement->num_busy_placement = 1;
		return;
	}
	qbo = to_qxl_bo(bo);
	qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU, false);
	*placement = qbo->placement;
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 87 82.86% 2 50.00%
christian koenig christian koenig 17 16.19% 1 25.00%
frediano ziglio frediano ziglio 1 0.95% 1 25.00%
Total 105 100.00% 4 100.00%



static int qxl_verify_access(struct ttm_buffer_object *bo, struct file *filp)
{
	struct qxl_bo *qbo = to_qxl_bo(bo);

	return drm_vma_node_verify_access(&qbo->gem_base.vma_node, filp);
}

Contributors
Person Tokens Prop Commits CommitProp
david herrmann david herrmann 21 53.85% 1 50.00%
dave airlie dave airlie 18 46.15% 1 50.00%
Total 39 100.00% 2 100.00%



static int qxl_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 qxl_device *qdev = qxl_get_qdev(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.is_iomem = true;
		mem->bus.base = qdev->vram_base;
		mem->bus.offset = mem->start << PAGE_SHIFT;
		break;
	case TTM_PL_PRIV0:
		mem->bus.is_iomem = true;
		mem->bus.base = qdev->surfaceram_base;
		mem->bus.offset = mem->start << PAGE_SHIFT;
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 191 100.00% 1 100.00%
Total 191 100.00% 1 100.00%



static void qxl_ttm_io_mem_free(struct ttm_bo_device *bdev,
				struct ttm_mem_reg *mem)
{
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 15 100.00% 1 100.00%
Total 15 100.00% 1 100.00%

/*
 * TTM backend functions.
 */

struct qxl_ttm_tt {
	
struct ttm_dma_tt		ttm;
	
struct qxl_device		*qdev;
	
u64				offset;
};



static int qxl_ttm_backend_bind(struct ttm_tt *ttm,
				struct ttm_mem_reg *bo_mem)
{
	struct qxl_ttm_tt *gtt = (void *)ttm;

	gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
	if (!ttm->num_pages) {
		WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
		     ttm->num_pages, bo_mem, ttm);
	}
	/* Not implemented */
	return -1;
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 72 100.00% 1 100.00%
Total 72 100.00% 1 100.00%



static int qxl_ttm_backend_unbind(struct ttm_tt *ttm)
{
	/* Not implemented */
	return -1;
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 16 100.00% 1 100.00%
Total 16 100.00% 1 100.00%



static void qxl_ttm_backend_destroy(struct ttm_tt *ttm)
{
	struct qxl_ttm_tt *gtt = (void *)ttm;

	ttm_dma_tt_fini(&gtt->ttm);
	kfree(gtt);
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 35 100.00% 1 100.00%
Total 35 100.00% 1 100.00%


static struct ttm_backend_func qxl_backend_func = {
	.bind = &qxl_ttm_backend_bind,
	.unbind = &qxl_ttm_backend_unbind,
	.destroy = &qxl_ttm_backend_destroy,
};



static int qxl_ttm_tt_populate(struct ttm_tt *ttm)
{
	int r;

	if (ttm->state != tt_unpopulated)
		return 0;

	r = ttm_pool_populate(ttm);
	if (r)
		return r;

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 42 100.00% 1 100.00%
Total 42 100.00% 1 100.00%



static void qxl_ttm_tt_unpopulate(struct ttm_tt *ttm)
{
	ttm_pool_unpopulate(ttm);
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 16 100.00% 1 100.00%
Total 16 100.00% 1 100.00%



static struct ttm_tt *qxl_ttm_tt_create(struct ttm_bo_device *bdev,
					unsigned long size, uint32_t page_flags,
					struct page *dummy_read_page)
{
	struct qxl_device *qdev;
	struct qxl_ttm_tt *gtt;

	qdev = qxl_get_qdev(bdev);
	gtt = kzalloc(sizeof(struct qxl_ttm_tt), GFP_KERNEL);
	if (gtt == NULL)
		return NULL;
	gtt->ttm.ttm.func = &qxl_backend_func;
	gtt->qdev = qdev;
	if (ttm_dma_tt_init(&gtt->ttm, bdev, size, page_flags,
			    dummy_read_page)) {
		kfree(gtt);
		return NULL;
	}
	return &gtt->ttm.ttm;
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 117 100.00% 2 100.00%
Total 117 100.00% 2 100.00%



static void qxl_move_null(struct ttm_buffer_object *bo,
			     struct ttm_mem_reg *new_mem)
{
	struct ttm_mem_reg *old_mem = &bo->mem;

	BUG_ON(old_mem->mm_node != NULL);
	*old_mem = *new_mem;
	new_mem->mm_node = NULL;
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 47 100.00% 1 100.00%
Total 47 100.00% 1 100.00%



static int qxl_bo_move(struct ttm_buffer_object *bo,
		       bool evict, bool interruptible,
		       bool no_wait_gpu,
		       struct ttm_mem_reg *new_mem)
{
	struct ttm_mem_reg *old_mem = &bo->mem;
	if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
		qxl_move_null(bo, new_mem);
		return 0;
	}
	return ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem);
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 73 100.00% 1 100.00%
Total 73 100.00% 1 100.00%



static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
			       struct ttm_mem_reg *new_mem)
{
	struct qxl_bo *qbo;
	struct qxl_device *qdev;

	if (!qxl_ttm_bo_is_qxl_bo(bo))
		return;
	qbo = to_qxl_bo(bo);
	qdev = qbo->gem_base.dev->dev_private;

	if (bo->mem.mem_type == TTM_PL_PRIV0 && qbo->surface_id)
		qxl_surface_evict(qdev, qbo, new_mem ? true : false);
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 78 98.73% 1 50.00%
frediano ziglio frediano ziglio 1 1.27% 1 50.00%
Total 79 100.00% 2 100.00%


static struct ttm_bo_driver qxl_bo_driver = {
	.ttm_tt_create = &qxl_ttm_tt_create,
	.ttm_tt_populate = &qxl_ttm_tt_populate,
	.ttm_tt_unpopulate = &qxl_ttm_tt_unpopulate,
	.invalidate_caches = &qxl_invalidate_caches,
	.init_mem_type = &qxl_init_mem_type,
	.evict_flags = &qxl_evict_flags,
	.move = &qxl_bo_move,
	.verify_access = &qxl_verify_access,
	.io_mem_reserve = &qxl_ttm_io_mem_reserve,
	.io_mem_free = &qxl_ttm_io_mem_free,
	.move_notify = &qxl_bo_move_notify,
	.lru_tail = &ttm_bo_default_lru_tail,
	.swap_lru_tail = &ttm_bo_default_swap_lru_tail,
};



int qxl_ttm_init(struct qxl_device *qdev)
{
	int r;
	int num_io_pages; /* != rom->num_io_pages, we include surface0 */

	r = qxl_ttm_global_init(qdev);
	if (r)
		return r;
	/* No others user of address space so set it to 0 */
	r = ttm_bo_device_init(&qdev->mman.bdev,
			       qdev->mman.bo_global_ref.ref.object,
			       &qxl_bo_driver,
			       qdev->ddev->anon_inode->i_mapping,
			       DRM_FILE_PAGE_OFFSET, 0);
	if (r) {
		DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
		return r;
	}
	/* NOTE: this includes the framebuffer (aka surface 0) */
	num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
	r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_VRAM,
			   num_io_pages);
	if (r) {
		DRM_ERROR("Failed initializing VRAM heap.\n");
		return r;
	}
	r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_PRIV0,
			   qdev->surfaceram_size / PAGE_SIZE);
	if (r) {
		DRM_ERROR("Failed initializing Surfaces heap.\n");
		return r;
	}
	DRM_INFO("qxl: %uM of VRAM memory size\n",
		 (unsigned)qdev->vram_size / (1024 * 1024));
	DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
		 ((unsigned)num_io_pages * PAGE_SIZE) / (1024 * 1024));
	DRM_INFO("qxl: %uM of Surface memory size\n",
		 (unsigned)qdev->surfaceram_size / (1024 * 1024));
	r = qxl_ttm_debugfs_init(qdev);
	if (r) {
		DRM_ERROR("Failed to init debugfs\n");
		return r;
	}
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 214 89.17% 1 33.33%
gerd hoffmann gerd hoffmann 18 7.50% 1 33.33%
david herrmann david herrmann 8 3.33% 1 33.33%
Total 240 100.00% 3 100.00%



void qxl_ttm_fini(struct qxl_device *qdev)
{
	ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_VRAM);
	ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_PRIV0);
	ttm_bo_device_release(&qdev->mman.bdev);
	qxl_ttm_global_fini(qdev);
	DRM_INFO("qxl: ttm finalized\n");
}


Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 54 100.00% 1 100.00%
Total 54 100.00% 1 100.00%


#define QXL_DEBUGFS_MEM_TYPES 2

#if defined(CONFIG_DEBUG_FS)


static int qxl_mm_dump_table(struct seq_file *m, void *data)
{
	struct drm_info_node *node = (struct drm_info_node *)m->private;
	struct drm_mm *mm = (struct drm_mm *)node->info_ent->data;
	struct drm_device *dev = node->minor->dev;
	struct qxl_device *rdev = dev->dev_private;
	int ret;
	struct ttm_bo_global *glob = rdev->mman.bdev.glob;

	spin_lock(&glob->lru_lock);
	ret = drm_mm_dump_table(m, mm);
	spin_unlock(&glob->lru_lock);
	return ret;
}
Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 109 100.00% 1 100.00%
Total 109 100.00% 1 100.00%

#endif



static int qxl_ttm_debugfs_init(struct qxl_device *qdev)
{
#if defined(CONFIG_DEBUG_FS)
	static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
	static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
	unsigned i;

	for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
		if (i == 0)
			sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
		else
			sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
		qxl_mem_types_list[i].name = qxl_mem_types_names[i];
		qxl_mem_types_list[i].show = &qxl_mm_dump_table;
		qxl_mem_types_list[i].driver_features = 0;
		if (i == 0)
			qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
		else
			qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV0].priv;

	}
	return qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);
#else
	return 0;
#endif
}
Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 175 100.00% 2 100.00%
Total 175 100.00% 2 100.00%

Overall Contributors
Person Tokens Prop Commits CommitProp
dave airlie dave airlie 2225 96.53% 4 36.36%
david herrmann david herrmann 29 1.26% 2 18.18%
christian koenig christian koenig 29 1.26% 2 18.18%
gerd hoffmann gerd hoffmann 18 0.78% 1 9.09%
daniel vetter daniel vetter 2 0.09% 1 9.09%
frediano ziglio frediano ziglio 2 0.09% 1 9.09%
Total 2305 100.00% 11 100.00%
  Directory: drivers/gpu/drm/qxl

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
dave airlie	dave airlie	50	100.00%	1	100.00%
	Total	50	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.7 drivers/gpu/drm/qxl/qxl_ttm.c

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Overall Contributors
