Release 4.11 drivers/gpu/drm/cirrus/cirrus_ttm.c

Directory: drivers/gpu/drm/cirrus
/*
 * 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);
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 27 100.00% 1 100.00%
Total 27 100.00% 1 100.00%


static int

cirrus_ttm_mem_global_init(struct drm_global_reference *ref)
{
	return ttm_mem_global_init(ref->object);
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 19 100.00% 1 100.00%
Total 19 100.00% 1 100.00%


static void

cirrus_ttm_mem_global_release(struct drm_global_reference *ref)
{
	ttm_mem_global_release(ref->object);
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%



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;
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 175 100.00% 1 100.00%
Total 175 100.00% 1 100.00%


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;
}


Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 55 98.21% 1 50.00%
Rashika Kheria 1 1.79% 1 50.00%
Total 56 100.00% 2 100.00%



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);
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 41 100.00% 1 100.00%
Total 41 100.00% 1 100.00%



static bool cirrus_ttm_bo_is_cirrus_bo(struct ttm_buffer_object *bo)
{
	if (bo->destroy == &cirrus_bo_ttm_destroy)
		return true;
	return false;
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 25 96.15% 1 50.00%
Rashika Kheria 1 3.85% 1 50.00%
Total 26 100.00% 2 100.00%


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;
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 98 100.00% 1 100.00%
Total 98 100.00% 1 100.00%


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;
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 49 100.00% 1 100.00%
Total 49 100.00% 1 100.00%



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->private_data);
}

Contributors
Person Tokens Prop Commits CommitProp
David Herrmann 23 56.10% 2 66.67%
Dave Airlie 18 43.90% 1 33.33%
Total 41 100.00% 3 100.00%



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;
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 165 100.00% 1 100.00%
Total 165 100.00% 1 100.00%



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

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 15 100.00% 1 100.00%
Total 15 100.00% 1 100.00%



static void cirrus_ttm_backend_destroy(struct ttm_tt *tt)
{
	ttm_tt_fini(tt);
	kfree(tt);
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 21 100.00% 1 100.00%
Total 21 100.00% 1 100.00%


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;
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 86 98.85% 1 50.00%
Rashika Kheria 1 1.15% 1 50.00%
Total 87 100.00% 2 100.00%



static int cirrus_ttm_tt_populate(struct ttm_tt *ttm)
{
	return ttm_pool_populate(ttm);
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 17 100.00% 1 100.00%
Total 17 100.00% 1 100.00%



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

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 16 100.00% 1 100.00%
Total 16 100.00% 1 100.00%


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,
	.eviction_valuable = ttm_bo_eviction_valuable,
	.evict_flags = cirrus_bo_evict_flags,
	.move = NULL,
	.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;
	}

	arch_io_reserve_memtype_wc(pci_resource_start(dev->pdev, 0),
				   pci_resource_len(dev->pdev, 0));

	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;
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 180 96.26% 3 60.00%
David Herrmann 6 3.21% 1 20.00%
Andrew Lutomirski 1 0.53% 1 20.00%
Total 187 100.00% 5 100.00%



void cirrus_mm_fini(struct cirrus_device *cirrus)
{
	struct drm_device *dev = cirrus->dev;

	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;
	arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0),
				pci_resource_len(dev->pdev, 0));
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 74 97.37% 3 75.00%
Andrew Lutomirski 2 2.63% 1 25.00%
Total 76 100.00% 4 100.00%



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;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 109 70.32% 1 50.00%
Christian König 46 29.68% 1 50.00%
Total 155 100.00% 2 100.00%



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;
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 192 98.97% 2 66.67%
Maarten Lankhorst 2 1.03% 1 33.33%
Total 194 100.00% 3 100.00%



static inline u64 cirrus_bo_gpu_offset(struct cirrus_bo *bo)
{
	return bo->bo.offset;
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 19 100.00% 1 100.00%
Total 19 100.00% 1 100.00%



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;
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 127 98.45% 1 50.00%
Christian König 2 1.55% 1 50.00%
Total 129 100.00% 2 100.00%



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;
}

Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 133 98.52% 1 50.00%
Christian König 2 1.48% 1 50.00%
Total 135 100.00% 2 100.00%



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);
}
Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 69 97.18% 1 50.00%
Daniel Vetter 2 2.82% 1 50.00%
Total 71 100.00% 2 100.00%

Overall Contributors
Person Tokens Prop Commits CommitProp
Dave Airlie 1823 95.00% 4 26.67%
Christian König 56 2.92% 3 20.00%
David Herrmann 29 1.51% 3 20.00%
Andrew Lutomirski 3 0.16% 1 6.67%
Rashika Kheria 3 0.16% 1 6.67%
Maarten Lankhorst 2 0.10% 1 6.67%
Daniel Vetter 2 0.10% 1 6.67%
David Howells 1 0.05% 1 6.67%
Total 1919 100.00% 15 100.00%
Directory: drivers/gpu/drm/cirrus

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.
Person	Tokens	Prop	Commits	CommitProp
Dave Airlie	27	100.00%	1	100.00%
Total	27	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/cirrus/cirrus_ttm.c

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