mirror of https://gitee.com/openkylin/linux.git
581 lines
16 KiB
C
581 lines
16 KiB
C
/*
|
|
* Copyright © 2008-2012 Intel Corporation
|
|
*
|
|
* 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 (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 NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS 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:
|
|
* Eric Anholt <eric@anholt.net>
|
|
* Chris Wilson <chris@chris-wilson.co.uk>
|
|
*
|
|
*/
|
|
|
|
#include <drm/drmP.h>
|
|
#include <drm/i915_drm.h>
|
|
#include "i915_drv.h"
|
|
|
|
/*
|
|
* The BIOS typically reserves some of the system's memory for the exclusive
|
|
* use of the integrated graphics. This memory is no longer available for
|
|
* use by the OS and so the user finds that his system has less memory
|
|
* available than he put in. We refer to this memory as stolen.
|
|
*
|
|
* The BIOS will allocate its framebuffer from the stolen memory. Our
|
|
* goal is try to reuse that object for our own fbcon which must always
|
|
* be available for panics. Anything else we can reuse the stolen memory
|
|
* for is a boon.
|
|
*/
|
|
|
|
int i915_gem_stolen_insert_node(struct drm_i915_private *dev_priv,
|
|
struct drm_mm_node *node, u64 size,
|
|
unsigned alignment)
|
|
{
|
|
int ret;
|
|
|
|
if (!drm_mm_initialized(&dev_priv->mm.stolen))
|
|
return -ENODEV;
|
|
|
|
mutex_lock(&dev_priv->mm.stolen_lock);
|
|
ret = drm_mm_insert_node(&dev_priv->mm.stolen, node, size, alignment,
|
|
DRM_MM_SEARCH_DEFAULT);
|
|
mutex_unlock(&dev_priv->mm.stolen_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
void i915_gem_stolen_remove_node(struct drm_i915_private *dev_priv,
|
|
struct drm_mm_node *node)
|
|
{
|
|
mutex_lock(&dev_priv->mm.stolen_lock);
|
|
drm_mm_remove_node(node);
|
|
mutex_unlock(&dev_priv->mm.stolen_lock);
|
|
}
|
|
|
|
static unsigned long i915_stolen_to_physical(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct resource *r;
|
|
u32 base;
|
|
|
|
/* Almost universally we can find the Graphics Base of Stolen Memory
|
|
* at offset 0x5c in the igfx configuration space. On a few (desktop)
|
|
* machines this is also mirrored in the bridge device at different
|
|
* locations, or in the MCHBAR. On gen2, the layout is again slightly
|
|
* different with the Graphics Segment immediately following Top of
|
|
* Memory (or Top of Usable DRAM). Note it appears that TOUD is only
|
|
* reported by 865g, so we just use the top of memory as determined
|
|
* by the e820 probe.
|
|
*
|
|
* XXX However gen2 requires an unavailable symbol.
|
|
*/
|
|
base = 0;
|
|
if (INTEL_INFO(dev)->gen >= 3) {
|
|
/* Read Graphics Base of Stolen Memory directly */
|
|
pci_read_config_dword(dev->pdev, 0x5c, &base);
|
|
base &= ~((1<<20) - 1);
|
|
} else { /* GEN2 */
|
|
#if 0
|
|
/* Stolen is immediately above Top of Memory */
|
|
base = max_low_pfn_mapped << PAGE_SHIFT;
|
|
#endif
|
|
}
|
|
|
|
if (base == 0)
|
|
return 0;
|
|
|
|
/* make sure we don't clobber the GTT if it's within stolen memory */
|
|
if (INTEL_INFO(dev)->gen <= 4 && !IS_G33(dev) && !IS_G4X(dev)) {
|
|
struct {
|
|
u32 start, end;
|
|
} stolen[2] = {
|
|
{ .start = base, .end = base + dev_priv->gtt.stolen_size, },
|
|
{ .start = base, .end = base + dev_priv->gtt.stolen_size, },
|
|
};
|
|
u64 gtt_start, gtt_end;
|
|
|
|
gtt_start = I915_READ(PGTBL_CTL);
|
|
if (IS_GEN4(dev))
|
|
gtt_start = (gtt_start & PGTBL_ADDRESS_LO_MASK) |
|
|
(gtt_start & PGTBL_ADDRESS_HI_MASK) << 28;
|
|
else
|
|
gtt_start &= PGTBL_ADDRESS_LO_MASK;
|
|
gtt_end = gtt_start + gtt_total_entries(dev_priv->gtt) * 4;
|
|
|
|
if (gtt_start >= stolen[0].start && gtt_start < stolen[0].end)
|
|
stolen[0].end = gtt_start;
|
|
if (gtt_end > stolen[1].start && gtt_end <= stolen[1].end)
|
|
stolen[1].start = gtt_end;
|
|
|
|
/* pick the larger of the two chunks */
|
|
if (stolen[0].end - stolen[0].start >
|
|
stolen[1].end - stolen[1].start) {
|
|
base = stolen[0].start;
|
|
dev_priv->gtt.stolen_size = stolen[0].end - stolen[0].start;
|
|
} else {
|
|
base = stolen[1].start;
|
|
dev_priv->gtt.stolen_size = stolen[1].end - stolen[1].start;
|
|
}
|
|
|
|
if (stolen[0].start != stolen[1].start ||
|
|
stolen[0].end != stolen[1].end) {
|
|
DRM_DEBUG_KMS("GTT within stolen memory at 0x%llx-0x%llx\n",
|
|
(unsigned long long) gtt_start,
|
|
(unsigned long long) gtt_end - 1);
|
|
DRM_DEBUG_KMS("Stolen memory adjusted to 0x%x-0x%x\n",
|
|
base, base + (u32) dev_priv->gtt.stolen_size - 1);
|
|
}
|
|
}
|
|
|
|
|
|
/* Verify that nothing else uses this physical address. Stolen
|
|
* memory should be reserved by the BIOS and hidden from the
|
|
* kernel. So if the region is already marked as busy, something
|
|
* is seriously wrong.
|
|
*/
|
|
r = devm_request_mem_region(dev->dev, base, dev_priv->gtt.stolen_size,
|
|
"Graphics Stolen Memory");
|
|
if (r == NULL) {
|
|
/*
|
|
* One more attempt but this time requesting region from
|
|
* base + 1, as we have seen that this resolves the region
|
|
* conflict with the PCI Bus.
|
|
* This is a BIOS w/a: Some BIOS wrap stolen in the root
|
|
* PCI bus, but have an off-by-one error. Hence retry the
|
|
* reservation starting from 1 instead of 0.
|
|
*/
|
|
r = devm_request_mem_region(dev->dev, base + 1,
|
|
dev_priv->gtt.stolen_size - 1,
|
|
"Graphics Stolen Memory");
|
|
/*
|
|
* GEN3 firmware likes to smash pci bridges into the stolen
|
|
* range. Apparently this works.
|
|
*/
|
|
if (r == NULL && !IS_GEN3(dev)) {
|
|
DRM_ERROR("conflict detected with stolen region: [0x%08x - 0x%08x]\n",
|
|
base, base + (uint32_t)dev_priv->gtt.stolen_size);
|
|
base = 0;
|
|
}
|
|
}
|
|
|
|
return base;
|
|
}
|
|
|
|
void i915_gem_cleanup_stolen(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
if (!drm_mm_initialized(&dev_priv->mm.stolen))
|
|
return;
|
|
|
|
drm_mm_takedown(&dev_priv->mm.stolen);
|
|
}
|
|
|
|
static void gen6_get_stolen_reserved(struct drm_i915_private *dev_priv,
|
|
unsigned long *base, unsigned long *size)
|
|
{
|
|
uint32_t reg_val = I915_READ(GEN6_STOLEN_RESERVED);
|
|
|
|
*base = reg_val & GEN6_STOLEN_RESERVED_ADDR_MASK;
|
|
|
|
switch (reg_val & GEN6_STOLEN_RESERVED_SIZE_MASK) {
|
|
case GEN6_STOLEN_RESERVED_1M:
|
|
*size = 1024 * 1024;
|
|
break;
|
|
case GEN6_STOLEN_RESERVED_512K:
|
|
*size = 512 * 1024;
|
|
break;
|
|
case GEN6_STOLEN_RESERVED_256K:
|
|
*size = 256 * 1024;
|
|
break;
|
|
case GEN6_STOLEN_RESERVED_128K:
|
|
*size = 128 * 1024;
|
|
break;
|
|
default:
|
|
*size = 1024 * 1024;
|
|
MISSING_CASE(reg_val & GEN6_STOLEN_RESERVED_SIZE_MASK);
|
|
}
|
|
}
|
|
|
|
static void gen7_get_stolen_reserved(struct drm_i915_private *dev_priv,
|
|
unsigned long *base, unsigned long *size)
|
|
{
|
|
uint32_t reg_val = I915_READ(GEN6_STOLEN_RESERVED);
|
|
|
|
*base = reg_val & GEN7_STOLEN_RESERVED_ADDR_MASK;
|
|
|
|
switch (reg_val & GEN7_STOLEN_RESERVED_SIZE_MASK) {
|
|
case GEN7_STOLEN_RESERVED_1M:
|
|
*size = 1024 * 1024;
|
|
break;
|
|
case GEN7_STOLEN_RESERVED_256K:
|
|
*size = 256 * 1024;
|
|
break;
|
|
default:
|
|
*size = 1024 * 1024;
|
|
MISSING_CASE(reg_val & GEN7_STOLEN_RESERVED_SIZE_MASK);
|
|
}
|
|
}
|
|
|
|
static void gen8_get_stolen_reserved(struct drm_i915_private *dev_priv,
|
|
unsigned long *base, unsigned long *size)
|
|
{
|
|
uint32_t reg_val = I915_READ(GEN6_STOLEN_RESERVED);
|
|
|
|
*base = reg_val & GEN6_STOLEN_RESERVED_ADDR_MASK;
|
|
|
|
switch (reg_val & GEN8_STOLEN_RESERVED_SIZE_MASK) {
|
|
case GEN8_STOLEN_RESERVED_1M:
|
|
*size = 1024 * 1024;
|
|
break;
|
|
case GEN8_STOLEN_RESERVED_2M:
|
|
*size = 2 * 1024 * 1024;
|
|
break;
|
|
case GEN8_STOLEN_RESERVED_4M:
|
|
*size = 4 * 1024 * 1024;
|
|
break;
|
|
case GEN8_STOLEN_RESERVED_8M:
|
|
*size = 8 * 1024 * 1024;
|
|
break;
|
|
default:
|
|
*size = 8 * 1024 * 1024;
|
|
MISSING_CASE(reg_val & GEN8_STOLEN_RESERVED_SIZE_MASK);
|
|
}
|
|
}
|
|
|
|
static void bdw_get_stolen_reserved(struct drm_i915_private *dev_priv,
|
|
unsigned long *base, unsigned long *size)
|
|
{
|
|
uint32_t reg_val = I915_READ(GEN6_STOLEN_RESERVED);
|
|
unsigned long stolen_top;
|
|
|
|
stolen_top = dev_priv->mm.stolen_base + dev_priv->gtt.stolen_size;
|
|
|
|
*base = reg_val & GEN6_STOLEN_RESERVED_ADDR_MASK;
|
|
|
|
/* On these platforms, the register doesn't have a size field, so the
|
|
* size is the distance between the base and the top of the stolen
|
|
* memory. We also have the genuine case where base is zero and there's
|
|
* nothing reserved. */
|
|
if (*base == 0)
|
|
*size = 0;
|
|
else
|
|
*size = stolen_top - *base;
|
|
}
|
|
|
|
int i915_gem_init_stolen(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
unsigned long reserved_total, reserved_base, reserved_size;
|
|
unsigned long stolen_top;
|
|
|
|
mutex_init(&dev_priv->mm.stolen_lock);
|
|
|
|
#ifdef CONFIG_INTEL_IOMMU
|
|
if (intel_iommu_gfx_mapped && INTEL_INFO(dev)->gen < 8) {
|
|
DRM_INFO("DMAR active, disabling use of stolen memory\n");
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
if (dev_priv->gtt.stolen_size == 0)
|
|
return 0;
|
|
|
|
dev_priv->mm.stolen_base = i915_stolen_to_physical(dev);
|
|
if (dev_priv->mm.stolen_base == 0)
|
|
return 0;
|
|
|
|
stolen_top = dev_priv->mm.stolen_base + dev_priv->gtt.stolen_size;
|
|
|
|
switch (INTEL_INFO(dev_priv)->gen) {
|
|
case 2:
|
|
case 3:
|
|
case 4:
|
|
case 5:
|
|
/* Assume the gen6 maximum for the older platforms. */
|
|
reserved_size = 1024 * 1024;
|
|
reserved_base = stolen_top - reserved_size;
|
|
break;
|
|
case 6:
|
|
gen6_get_stolen_reserved(dev_priv, &reserved_base,
|
|
&reserved_size);
|
|
break;
|
|
case 7:
|
|
gen7_get_stolen_reserved(dev_priv, &reserved_base,
|
|
&reserved_size);
|
|
break;
|
|
default:
|
|
if (IS_BROADWELL(dev_priv) || IS_SKYLAKE(dev_priv))
|
|
bdw_get_stolen_reserved(dev_priv, &reserved_base,
|
|
&reserved_size);
|
|
else
|
|
gen8_get_stolen_reserved(dev_priv, &reserved_base,
|
|
&reserved_size);
|
|
break;
|
|
}
|
|
|
|
/* It is possible for the reserved base to be zero, but the register
|
|
* field for size doesn't have a zero option. */
|
|
if (reserved_base == 0) {
|
|
reserved_size = 0;
|
|
reserved_base = stolen_top;
|
|
}
|
|
|
|
if (reserved_base < dev_priv->mm.stolen_base ||
|
|
reserved_base + reserved_size > stolen_top) {
|
|
DRM_DEBUG_KMS("Stolen reserved area [0x%08lx - 0x%08lx] outside stolen memory [0x%08lx - 0x%08lx]\n",
|
|
reserved_base, reserved_base + reserved_size,
|
|
dev_priv->mm.stolen_base, stolen_top);
|
|
return 0;
|
|
}
|
|
|
|
/* It is possible for the reserved area to end before the end of stolen
|
|
* memory, so just consider the start. */
|
|
reserved_total = stolen_top - reserved_base;
|
|
|
|
DRM_DEBUG_KMS("Memory reserved for graphics device: %luK, usable: %luK\n",
|
|
dev_priv->gtt.stolen_size >> 10,
|
|
(dev_priv->gtt.stolen_size - reserved_total) >> 10);
|
|
|
|
/* Basic memrange allocator for stolen space */
|
|
drm_mm_init(&dev_priv->mm.stolen, 0, dev_priv->gtt.stolen_size -
|
|
reserved_total);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct sg_table *
|
|
i915_pages_create_for_stolen(struct drm_device *dev,
|
|
u32 offset, u32 size)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct sg_table *st;
|
|
struct scatterlist *sg;
|
|
|
|
DRM_DEBUG_DRIVER("offset=0x%x, size=%d\n", offset, size);
|
|
BUG_ON(offset > dev_priv->gtt.stolen_size - size);
|
|
|
|
/* We hide that we have no struct page backing our stolen object
|
|
* by wrapping the contiguous physical allocation with a fake
|
|
* dma mapping in a single scatterlist.
|
|
*/
|
|
|
|
st = kmalloc(sizeof(*st), GFP_KERNEL);
|
|
if (st == NULL)
|
|
return NULL;
|
|
|
|
if (sg_alloc_table(st, 1, GFP_KERNEL)) {
|
|
kfree(st);
|
|
return NULL;
|
|
}
|
|
|
|
sg = st->sgl;
|
|
sg->offset = 0;
|
|
sg->length = size;
|
|
|
|
sg_dma_address(sg) = (dma_addr_t)dev_priv->mm.stolen_base + offset;
|
|
sg_dma_len(sg) = size;
|
|
|
|
return st;
|
|
}
|
|
|
|
static int i915_gem_object_get_pages_stolen(struct drm_i915_gem_object *obj)
|
|
{
|
|
BUG();
|
|
return -EINVAL;
|
|
}
|
|
|
|
static void i915_gem_object_put_pages_stolen(struct drm_i915_gem_object *obj)
|
|
{
|
|
/* Should only be called during free */
|
|
sg_free_table(obj->pages);
|
|
kfree(obj->pages);
|
|
}
|
|
|
|
|
|
static void
|
|
i915_gem_object_release_stolen(struct drm_i915_gem_object *obj)
|
|
{
|
|
struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
|
|
|
|
if (obj->stolen) {
|
|
i915_gem_stolen_remove_node(dev_priv, obj->stolen);
|
|
kfree(obj->stolen);
|
|
obj->stolen = NULL;
|
|
}
|
|
}
|
|
static const struct drm_i915_gem_object_ops i915_gem_object_stolen_ops = {
|
|
.get_pages = i915_gem_object_get_pages_stolen,
|
|
.put_pages = i915_gem_object_put_pages_stolen,
|
|
.release = i915_gem_object_release_stolen,
|
|
};
|
|
|
|
static struct drm_i915_gem_object *
|
|
_i915_gem_object_create_stolen(struct drm_device *dev,
|
|
struct drm_mm_node *stolen)
|
|
{
|
|
struct drm_i915_gem_object *obj;
|
|
|
|
obj = i915_gem_object_alloc(dev);
|
|
if (obj == NULL)
|
|
return NULL;
|
|
|
|
drm_gem_private_object_init(dev, &obj->base, stolen->size);
|
|
i915_gem_object_init(obj, &i915_gem_object_stolen_ops);
|
|
|
|
obj->pages = i915_pages_create_for_stolen(dev,
|
|
stolen->start, stolen->size);
|
|
if (obj->pages == NULL)
|
|
goto cleanup;
|
|
|
|
i915_gem_object_pin_pages(obj);
|
|
obj->stolen = stolen;
|
|
|
|
obj->base.read_domains = I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT;
|
|
obj->cache_level = HAS_LLC(dev) ? I915_CACHE_LLC : I915_CACHE_NONE;
|
|
|
|
return obj;
|
|
|
|
cleanup:
|
|
i915_gem_object_free(obj);
|
|
return NULL;
|
|
}
|
|
|
|
struct drm_i915_gem_object *
|
|
i915_gem_object_create_stolen(struct drm_device *dev, u32 size)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct drm_i915_gem_object *obj;
|
|
struct drm_mm_node *stolen;
|
|
int ret;
|
|
|
|
if (!drm_mm_initialized(&dev_priv->mm.stolen))
|
|
return NULL;
|
|
|
|
DRM_DEBUG_KMS("creating stolen object: size=%x\n", size);
|
|
if (size == 0)
|
|
return NULL;
|
|
|
|
stolen = kzalloc(sizeof(*stolen), GFP_KERNEL);
|
|
if (!stolen)
|
|
return NULL;
|
|
|
|
ret = i915_gem_stolen_insert_node(dev_priv, stolen, size, 4096);
|
|
if (ret) {
|
|
kfree(stolen);
|
|
return NULL;
|
|
}
|
|
|
|
obj = _i915_gem_object_create_stolen(dev, stolen);
|
|
if (obj)
|
|
return obj;
|
|
|
|
i915_gem_stolen_remove_node(dev_priv, stolen);
|
|
kfree(stolen);
|
|
return NULL;
|
|
}
|
|
|
|
struct drm_i915_gem_object *
|
|
i915_gem_object_create_stolen_for_preallocated(struct drm_device *dev,
|
|
u32 stolen_offset,
|
|
u32 gtt_offset,
|
|
u32 size)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct i915_address_space *ggtt = &dev_priv->gtt.base;
|
|
struct drm_i915_gem_object *obj;
|
|
struct drm_mm_node *stolen;
|
|
struct i915_vma *vma;
|
|
int ret;
|
|
|
|
if (!drm_mm_initialized(&dev_priv->mm.stolen))
|
|
return NULL;
|
|
|
|
DRM_DEBUG_KMS("creating preallocated stolen object: stolen_offset=%x, gtt_offset=%x, size=%x\n",
|
|
stolen_offset, gtt_offset, size);
|
|
|
|
/* KISS and expect everything to be page-aligned */
|
|
if (WARN_ON(size == 0) || WARN_ON(size & 4095) ||
|
|
WARN_ON(stolen_offset & 4095))
|
|
return NULL;
|
|
|
|
stolen = kzalloc(sizeof(*stolen), GFP_KERNEL);
|
|
if (!stolen)
|
|
return NULL;
|
|
|
|
stolen->start = stolen_offset;
|
|
stolen->size = size;
|
|
mutex_lock(&dev_priv->mm.stolen_lock);
|
|
ret = drm_mm_reserve_node(&dev_priv->mm.stolen, stolen);
|
|
mutex_unlock(&dev_priv->mm.stolen_lock);
|
|
if (ret) {
|
|
DRM_DEBUG_KMS("failed to allocate stolen space\n");
|
|
kfree(stolen);
|
|
return NULL;
|
|
}
|
|
|
|
obj = _i915_gem_object_create_stolen(dev, stolen);
|
|
if (obj == NULL) {
|
|
DRM_DEBUG_KMS("failed to allocate stolen object\n");
|
|
i915_gem_stolen_remove_node(dev_priv, stolen);
|
|
kfree(stolen);
|
|
return NULL;
|
|
}
|
|
|
|
/* Some objects just need physical mem from stolen space */
|
|
if (gtt_offset == I915_GTT_OFFSET_NONE)
|
|
return obj;
|
|
|
|
vma = i915_gem_obj_lookup_or_create_vma(obj, ggtt);
|
|
if (IS_ERR(vma)) {
|
|
ret = PTR_ERR(vma);
|
|
goto err_out;
|
|
}
|
|
|
|
/* To simplify the initialisation sequence between KMS and GTT,
|
|
* we allow construction of the stolen object prior to
|
|
* setting up the GTT space. The actual reservation will occur
|
|
* later.
|
|
*/
|
|
vma->node.start = gtt_offset;
|
|
vma->node.size = size;
|
|
if (drm_mm_initialized(&ggtt->mm)) {
|
|
ret = drm_mm_reserve_node(&ggtt->mm, &vma->node);
|
|
if (ret) {
|
|
DRM_DEBUG_KMS("failed to allocate stolen GTT space\n");
|
|
goto err_vma;
|
|
}
|
|
}
|
|
|
|
vma->bound |= GLOBAL_BIND;
|
|
|
|
list_add_tail(&obj->global_list, &dev_priv->mm.bound_list);
|
|
list_add_tail(&vma->mm_list, &ggtt->inactive_list);
|
|
i915_gem_object_pin_pages(obj);
|
|
|
|
return obj;
|
|
|
|
err_vma:
|
|
i915_gem_vma_destroy(vma);
|
|
err_out:
|
|
i915_gem_stolen_remove_node(dev_priv, stolen);
|
|
kfree(stolen);
|
|
drm_gem_object_unreference(&obj->base);
|
|
return NULL;
|
|
}
|