// SPDX-License-Identifier: GPL-2.0 OR MIT
/**************************************************************************
*
* Copyright ( c ) 2011 - 2024 Broadcom . All Rights Reserved . The term
* “ Broadcom ” refers to Broadcom Inc . and / or its subsidiaries .
*
* 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 .
*
**************************************************************************/
#include "vmwgfx_bo.h"
#include "vmwgfx_drv.h"
#include "vmwgfx_resource_priv.h"
#include <drm/ttm/ttm_placement.h>
static void vmw_bo_release(struct vmw_bo *vbo)
{
struct vmw_resource *res;
WARN_ON(kref_read(&vbo->tbo.base.refcount) != 0 );
vmw_bo_unmap(vbo);
xa_destroy(&vbo->detached_resources);
WARN_ON(vbo->is_dumb && !vbo->dumb_surface);
if (vbo->is_dumb && vbo->dumb_surface) {
res = &vbo->dumb_surface->res;
WARN_ON(vbo != res->guest_memory_bo);
WARN_ON(!res->guest_memory_bo);
if (res->guest_memory_bo) {
/* Reserve and switch the backing mob. */
mutex_lock(&res->dev_priv->cmdbuf_mutex);
(void )vmw_resource_reserve(res, false , true );
vmw_resource_mob_detach(res);
if (res->dirty)
res->func->dirty_free(res);
if (res->coherent)
vmw_bo_dirty_release(res->guest_memory_bo);
res->guest_memory_bo = NULL;
res->guest_memory_offset = 0 ;
vmw_resource_unreserve(res, true , false , false , NULL,
0 );
mutex_unlock(&res->dev_priv->cmdbuf_mutex);
}
vmw_surface_unreference(&vbo->dumb_surface);
}
drm_gem_object_release(&vbo->tbo.base);
}
/**
* vmw_bo_free - vmw_bo destructor
*
* @ bo : Pointer to the embedded struct ttm_buffer_object
*/
static void vmw_bo_free(struct ttm_buffer_object *bo)
{
struct vmw_bo *vbo = to_vmw_bo(&bo->base);
WARN_ON(!RB_EMPTY_ROOT(&vbo->res_tree));
vmw_bo_release(vbo);
WARN_ON(vbo->dirty);
kfree(vbo);
}
/**
* vmw_bo_pin_in_placement - Validate a buffer to placement .
*
* @ dev_priv : Driver private .
* @ buf : DMA buffer to move .
* @ placement : The placement to pin it .
* @ interruptible : Use interruptible wait .
* Return : Zero on success , Negative error code on failure . In particular
* - ERESTARTSYS if interrupted by a signal
*/
static int vmw_bo_pin_in_placement(struct vmw_private *dev_priv,
struct vmw_bo *buf,
struct ttm_placement *placement,
bool interruptible)
{
struct ttm_operation_ctx ctx = {interruptible, false };
struct ttm_buffer_object *bo = &buf->tbo;
int ret;
vmw_execbuf_release_pinned_bo(dev_priv);
ret = ttm_bo_reserve(bo, interruptible, false , NULL);
if (unlikely(ret != 0 ))
goto err;
ret = ttm_bo_validate(bo, placement, &ctx);
if (!ret)
vmw_bo_pin_reserved(buf, true );
ttm_bo_unreserve(bo);
err:
return ret;
}
/**
* vmw_bo_pin_in_vram_or_gmr - Move a buffer to vram or gmr .
*
* This function takes the reservation_sem in write mode .
* Flushes and unpins the query bo to avoid failures .
*
* @ dev_priv : Driver private .
* @ buf : DMA buffer to move .
* @ interruptible : Use interruptible wait .
* Return : Zero on success , Negative error code on failure . In particular
* - ERESTARTSYS if interrupted by a signal
*/
int vmw_bo_pin_in_vram_or_gmr(struct vmw_private *dev_priv,
struct vmw_bo *buf,
bool interruptible)
{
struct ttm_operation_ctx ctx = {interruptible, false };
struct ttm_buffer_object *bo = &buf->tbo;
int ret;
vmw_execbuf_release_pinned_bo(dev_priv);
ret = ttm_bo_reserve(bo, interruptible, false , NULL);
if (unlikely(ret != 0 ))
goto err;
vmw_bo_placement_set(buf,
VMW_BO_DOMAIN_GMR | VMW_BO_DOMAIN_VRAM,
VMW_BO_DOMAIN_GMR);
ret = ttm_bo_validate(bo, &buf->placement, &ctx);
if (likely(ret == 0 ) || ret == -ERESTARTSYS)
goto out_unreserve;
vmw_bo_placement_set(buf,
VMW_BO_DOMAIN_VRAM,
VMW_BO_DOMAIN_VRAM);
ret = ttm_bo_validate(bo, &buf->placement, &ctx);
out_unreserve:
if (!ret)
vmw_bo_pin_reserved(buf, true );
ttm_bo_unreserve(bo);
err:
return ret;
}
/**
* vmw_bo_pin_in_vram - Move a buffer to vram .
*
* This function takes the reservation_sem in write mode .
* Flushes and unpins the query bo to avoid failures .
*
* @ dev_priv : Driver private .
* @ buf : DMA buffer to move .
* @ interruptible : Use interruptible wait .
* Return : Zero on success , Negative error code on failure . In particular
* - ERESTARTSYS if interrupted by a signal
*/
int vmw_bo_pin_in_vram(struct vmw_private *dev_priv,
struct vmw_bo *buf,
bool interruptible)
{
return vmw_bo_pin_in_placement(dev_priv, buf, &vmw_vram_placement,
interruptible);
}
/**
* vmw_bo_pin_in_start_of_vram - Move a buffer to start of vram .
*
* This function takes the reservation_sem in write mode .
* Flushes and unpins the query bo to avoid failures .
*
* @ dev_priv : Driver private .
* @ buf : DMA buffer to pin .
* @ interruptible : Use interruptible wait .
* Return : Zero on success , Negative error code on failure . In particular
* - ERESTARTSYS if interrupted by a signal
*/
int vmw_bo_pin_in_start_of_vram(struct vmw_private *dev_priv,
struct vmw_bo *buf,
bool interruptible)
{
struct ttm_operation_ctx ctx = {interruptible, false };
struct ttm_buffer_object *bo = &buf->tbo;
int ret = 0 ;
vmw_execbuf_release_pinned_bo(dev_priv);
ret = ttm_bo_reserve(bo, interruptible, false , NULL);
if (unlikely(ret != 0 ))
goto err_unlock;
/*
* Is this buffer already in vram but not at the start of it ?
* In that case , evict it first because TTM isn ' t good at handling
* that situation .
*/
if (bo->resource->mem_type == TTM_PL_VRAM &&
bo->resource->start < PFN_UP(bo->resource->size) &&
bo->resource->start > 0 &&
buf->tbo.pin_count == 0 ) {
ctx.interruptible = false ;
vmw_bo_placement_set(buf,
VMW_BO_DOMAIN_SYS,
VMW_BO_DOMAIN_SYS);
(void )ttm_bo_validate(bo, &buf->placement, &ctx);
}
vmw_bo_placement_set(buf,
VMW_BO_DOMAIN_VRAM,
VMW_BO_DOMAIN_VRAM);
buf->places[0 ].lpfn = PFN_UP(bo->resource->size);
ret = ttm_bo_validate(bo, &buf->placement, &ctx);
/* For some reason we didn't end up at the start of vram */
WARN_ON(ret == 0 && bo->resource->start != 0 );
if (!ret)
vmw_bo_pin_reserved(buf, true );
ttm_bo_unreserve(bo);
err_unlock:
return ret;
}
/**
* vmw_bo_unpin - Unpin the buffer given buffer , does not move the buffer .
*
* This function takes the reservation_sem in write mode .
*
* @ dev_priv : Driver private .
* @ buf : DMA buffer to unpin .
* @ interruptible : Use interruptible wait .
* Return : Zero on success , Negative error code on failure . In particular
* - ERESTARTSYS if interrupted by a signal
*/
int vmw_bo_unpin(struct vmw_private *dev_priv,
struct vmw_bo *buf,
bool interruptible)
{
struct ttm_buffer_object *bo = &buf->tbo;
int ret;
ret = ttm_bo_reserve(bo, interruptible, false , NULL);
if (unlikely(ret != 0 ))
goto err;
vmw_bo_pin_reserved(buf, false );
ttm_bo_unreserve(bo);
err:
return ret;
}
/**
* vmw_bo_get_guest_ptr - Get the guest ptr representing the current placement
* of a buffer .
*
* @ bo : Pointer to a struct ttm_buffer_object . Must be pinned or reserved .
* @ ptr : SVGAGuestPtr returning the result .
*/
void vmw_bo_get_guest_ptr(const struct ttm_buffer_object *bo,
SVGAGuestPtr *ptr)
{
if (bo->resource->mem_type == TTM_PL_VRAM) {
ptr->gmrId = SVGA_GMR_FRAMEBUFFER;
ptr->offset = bo->resource->start << PAGE_SHIFT;
} else {
ptr->gmrId = bo->resource->start;
ptr->offset = 0 ;
}
}
/**
* vmw_bo_pin_reserved - Pin or unpin a buffer object without moving it .
*
* @ vbo : The buffer object . Must be reserved .
* @ pin : Whether to pin or unpin .
*
*/
void vmw_bo_pin_reserved(struct vmw_bo *vbo, bool pin)
{
struct ttm_operation_ctx ctx = { false , true };
struct ttm_place pl;
struct ttm_placement placement;
struct ttm_buffer_object *bo = &vbo->tbo;
uint32_t old_mem_type = bo->resource->mem_type;
int ret;
dma_resv_assert_held(bo->base.resv);
if (pin == !!bo->pin_count)
return ;
pl.fpfn = 0 ;
pl.lpfn = 0 ;
pl.mem_type = bo->resource->mem_type;
pl.flags = bo->resource->placement;
memset(&placement, 0 , sizeof (placement));
placement.num_placement = 1 ;
placement.placement = &pl;
ret = ttm_bo_validate(bo, &placement, &ctx);
BUG_ON(ret != 0 || bo->resource->mem_type != old_mem_type);
if (pin)
ttm_bo_pin(bo);
else
ttm_bo_unpin(bo);
}
/**
* vmw_bo_map_and_cache - Map a buffer object and cache the map
*
* @ vbo : The buffer object to map
* Return : A kernel virtual address or NULL if mapping failed .
*
* This function maps a buffer object into the kernel address space , or
* returns the virtual kernel address of an already existing map . The virtual
* address remains valid as long as the buffer object is pinned or reserved .
* The cached map is torn down on either
* 1 ) Buffer object move
* 2 ) Buffer object swapout
* 3 ) Buffer object destruction
*
*/
void *vmw_bo_map_and_cache(struct vmw_bo *vbo)
{
return vmw_bo_map_and_cache_size(vbo, vbo->tbo.base.size);
}
void *vmw_bo_map_and_cache_size(struct vmw_bo *vbo, size_t size)
{
struct ttm_buffer_object *bo = &vbo->tbo;
bool not_used;
void *virtual ;
int ret;
atomic_inc(&vbo->map_count);
virtual = ttm_kmap_obj_virtual(&vbo->map, ¬_used);
if (virtual )
return virtual ;
ret = ttm_bo_kmap(bo, 0 , PFN_UP(size), &vbo->map);
if (ret)
DRM_ERROR("Buffer object map failed: %d (size: bo = %zu, map = %zu).\n" ,
ret, bo->base.size, size);
return ttm_kmap_obj_virtual(&vbo->map, ¬_used);
}
/**
* vmw_bo_unmap - Tear down a cached buffer object map .
*
* @ vbo : The buffer object whose map we are tearing down .
*
* This function tears down a cached map set up using
* vmw_bo_map_and_cache ( ) .
*/
void vmw_bo_unmap(struct vmw_bo *vbo)
{
int map_count;
if (vbo->map.bo == NULL)
return ;
map_count = atomic_dec_return(&vbo->map_count);
if (!map_count) {
ttm_bo_kunmap(&vbo->map);
vbo->map.bo = NULL;
}
}
/**
* vmw_bo_init - Initialize a vmw buffer object
*
* @ dev_priv : Pointer to the device private struct
* @ vmw_bo : Buffer object to initialize
* @ params : Parameters used to initialize the buffer object
* @ destroy : The function used to delete the buffer object
* Returns : Zero on success , negative error code on error .
*
*/
static int vmw_bo_init(struct vmw_private *dev_priv,
struct vmw_bo *vmw_bo,
struct vmw_bo_params *params,
void (*destroy)(struct ttm_buffer_object *))
{
struct ttm_operation_ctx ctx = {
.interruptible = params->bo_type != ttm_bo_type_kernel,
.no_wait_gpu = false ,
.resv = params->resv,
};
struct ttm_device *bdev = &dev_priv->bdev;
struct drm_device *vdev = &dev_priv->drm;
int ret;
memset(vmw_bo, 0 , sizeof (*vmw_bo));
BUILD_BUG_ON(TTM_MAX_BO_PRIORITY <= 3 );
vmw_bo->tbo.priority = 3 ;
vmw_bo->res_tree = RB_ROOT;
xa_init(&vmw_bo->detached_resources);
atomic_set(&vmw_bo->map_count, 0 );
params->size = ALIGN(params->size, PAGE_SIZE);
drm_gem_private_object_init(vdev, &vmw_bo->tbo.base, params->size);
vmw_bo_placement_set(vmw_bo, params->domain, params->busy_domain);
ret = ttm_bo_init_reserved(bdev, &vmw_bo->tbo, params->bo_type,
&vmw_bo->placement, 0 , &ctx,
params->sg, params->resv, destroy);
if (unlikely(ret))
return ret;
if (params->pin)
ttm_bo_pin(&vmw_bo->tbo);
if (!params->keep_resv)
ttm_bo_unreserve(&vmw_bo->tbo);
return 0 ;
}
int vmw_bo_create(struct vmw_private *vmw,
struct vmw_bo_params *params,
struct vmw_bo **p_bo)
{
int ret;
*p_bo = kmalloc(sizeof (**p_bo), GFP_KERNEL);
if (unlikely(!*p_bo)) {
DRM_ERROR("Failed to allocate a buffer.\n" );
return -ENOMEM;
}
/*
* vmw_bo_init will delete the * p_bo object if it fails
*/
ret = vmw_bo_init(vmw, *p_bo, params, vmw_bo_free);
if (unlikely(ret != 0 ))
goto out_error;
(*p_bo)->tbo.base.funcs = &vmw_gem_object_funcs;
return ret;
out_error:
*p_bo = NULL;
return ret;
}
/**
* vmw_user_bo_synccpu_grab - Grab a struct vmw_bo for cpu
* access , idling previous GPU operations on the buffer and optionally
* blocking it for further command submissions .
*
* @ vmw_bo : Pointer to the buffer object being grabbed for CPU access
* @ flags : Flags indicating how the grab should be performed .
* Return : Zero on success , Negative error code on error . In particular ,
* - EBUSY will be returned if a dontblock operation is requested and the
* buffer object is busy , and - ERESTARTSYS will be returned if a wait is
* interrupted by a signal .
*
* A blocking grab will be automatically released when @ tfile is closed .
*/
static int vmw_user_bo_synccpu_grab(struct vmw_bo *vmw_bo,
uint32_t flags)
{
bool nonblock = !!(flags & drm_vmw_synccpu_dontblock);
struct ttm_buffer_object *bo = &vmw_bo->tbo;
int ret;
if (flags & drm_vmw_synccpu_allow_cs) {
long lret;
lret = dma_resv_wait_timeout(bo->base.resv, DMA_RESV_USAGE_READ,
true , nonblock ? 0 :
MAX_SCHEDULE_TIMEOUT);
if (!lret)
return -EBUSY;
else if (lret < 0 )
return lret;
return 0 ;
}
ret = ttm_bo_reserve(bo, true , nonblock, NULL);
if (unlikely(ret != 0 ))
return ret;
ret = ttm_bo_wait(bo, true , nonblock);
if (likely(ret == 0 ))
atomic_inc(&vmw_bo->cpu_writers);
ttm_bo_unreserve(bo);
if (unlikely(ret != 0 ))
return ret;
return ret;
}
/**
* vmw_user_bo_synccpu_release - Release a previous grab for CPU access ,
* and unblock command submission on the buffer if blocked .
*
* @ filp : Identifying the caller .
* @ handle : Handle identifying the buffer object .
* @ flags : Flags indicating the type of release .
*/
static int vmw_user_bo_synccpu_release(struct drm_file *filp,
uint32_t handle,
uint32_t flags)
{
struct vmw_bo *vmw_bo;
int ret = vmw_user_bo_lookup(filp, handle, &vmw_bo);
if (!ret) {
if (!(flags & drm_vmw_synccpu_allow_cs)) {
atomic_dec(&vmw_bo->cpu_writers);
}
vmw_user_bo_unref(&vmw_bo);
}
return ret;
}
/**
* vmw_user_bo_synccpu_ioctl - ioctl function implementing the synccpu
* functionality .
*
* @ dev : Identifies the drm device .
* @ data : Pointer to the ioctl argument .
* @ file_priv : Identifies the caller .
* Return : Zero on success , negative error code on error .
*
* This function checks the ioctl arguments for validity and calls the
* relevant synccpu functions .
*/
int vmw_user_bo_synccpu_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_vmw_synccpu_arg *arg =
(struct drm_vmw_synccpu_arg *) data;
struct vmw_bo *vbo;
int ret;
if ((arg->flags & (drm_vmw_synccpu_read | drm_vmw_synccpu_write)) == 0
|| (arg->flags & ~(drm_vmw_synccpu_read | drm_vmw_synccpu_write |
drm_vmw_synccpu_dontblock |
drm_vmw_synccpu_allow_cs)) != 0 ) {
DRM_ERROR("Illegal synccpu flags.\n" );
return -EINVAL;
}
switch (arg->op) {
case drm_vmw_synccpu_grab:
ret = vmw_user_bo_lookup(file_priv, arg->handle, &vbo);
if (unlikely(ret != 0 ))
return ret;
ret = vmw_user_bo_synccpu_grab(vbo, arg->flags);
vmw_user_bo_unref(&vbo);
if (unlikely(ret != 0 )) {
if (ret == -ERESTARTSYS || ret == -EBUSY)
return -EBUSY;
DRM_ERROR("Failed synccpu grab on handle 0x%08x.\n" ,
(unsigned int ) arg->handle);
return ret;
}
break ;
case drm_vmw_synccpu_release:
ret = vmw_user_bo_synccpu_release(file_priv,
arg->handle,
arg->flags);
if (unlikely(ret != 0 )) {
DRM_ERROR("Failed synccpu release on handle 0x%08x.\n" ,
(unsigned int ) arg->handle);
return ret;
}
break ;
default :
DRM_ERROR("Invalid synccpu operation.\n" );
return -EINVAL;
}
return 0 ;
}
/**
* vmw_bo_unref_ioctl - Generic handle close ioctl .
*
* @ dev : Identifies the drm device .
* @ data : Pointer to the ioctl argument .
* @ file_priv : Identifies the caller .
* Return : Zero on success , negative error code on error .
*
* This function checks the ioctl arguments for validity and closes a
* handle to a TTM base object , optionally freeing the object .
*/
int vmw_bo_unref_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_vmw_unref_dmabuf_arg *arg =
(struct drm_vmw_unref_dmabuf_arg *)data;
return drm_gem_handle_delete(file_priv, arg->handle);
}
/**
* vmw_user_bo_lookup - Look up a vmw user buffer object from a handle .
*
* @ filp : The file the handle is registered with .
* @ handle : The user buffer object handle
* @ out : Pointer to a where a pointer to the embedded
* struct vmw_bo should be placed .
* Return : Zero on success , Negative error code on error .
*
* The vmw buffer object pointer will be refcounted ( both ttm and gem )
*/
int vmw_user_bo_lookup(struct drm_file *filp,
u32 handle,
struct vmw_bo **out)
{
struct drm_gem_object *gobj;
gobj = drm_gem_object_lookup(filp, handle);
if (!gobj) {
DRM_ERROR("Invalid buffer object handle 0x%08lx.\n" ,
(unsigned long )handle);
return -ESRCH;
}
*out = to_vmw_bo(gobj);
return 0 ;
}
/**
* vmw_bo_fence_single - Utility function to fence a single TTM buffer
* object without unreserving it .
*
* @ bo : Pointer to the struct ttm_buffer_object to fence .
* @ fence : Pointer to the fence . If NULL , this function will
* insert a fence into the command stream . .
*
* Contrary to the ttm_eu version of this function , it takes only
* a single buffer object instead of a list , and it also doesn ' t
* unreserve the buffer object , which needs to be done separately .
*/
void vmw_bo_fence_single(struct ttm_buffer_object *bo,
struct vmw_fence_obj *fence)
{
struct ttm_device *bdev = bo->bdev;
struct vmw_private *dev_priv = vmw_priv_from_ttm(bdev);
int ret;
if (fence == NULL)
vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
else
dma_fence_get(&fence->base);
ret = dma_resv_reserve_fences(bo->base.resv, 1 );
if (!ret)
dma_resv_add_fence(bo->base.resv, &fence->base,
DMA_RESV_USAGE_KERNEL);
else
/* Last resort fallback when we are OOM */
dma_fence_wait(&fence->base, false );
dma_fence_put(&fence->base);
}
/**
* vmw_bo_swap_notify - swapout notify callback .
*
* @ bo : The buffer object to be swapped out .
*/
void vmw_bo_swap_notify(struct ttm_buffer_object *bo)
{
/* Kill any cached kernel maps before swapout */
vmw_bo_unmap(to_vmw_bo(&bo->base));
}
/**
* vmw_bo_move_notify - TTM move_notify_callback
*
* @ bo : The TTM buffer object about to move .
* @ mem : The struct ttm_resource indicating to what memory
* region the move is taking place .
*
* Detaches cached maps and device bindings that require that the
* buffer doesn ' t move .
*/
void vmw_bo_move_notify(struct ttm_buffer_object *bo,
struct ttm_resource *mem)
{
struct vmw_bo *vbo = to_vmw_bo(&bo->base);
/*
* Kill any cached kernel maps before move to or from VRAM .
* With other types of moves , the underlying pages stay the same ,
* and the map can be kept .
*/
if (mem->mem_type == TTM_PL_VRAM || bo->resource->mem_type == TTM_PL_VRAM)
vmw_bo_unmap(vbo);
/*
* If we ' re moving a backup MOB out of MOB placement , then make sure we
* read back all resource content first , and unbind the MOB from
* the resource .
*/
if (mem->mem_type != VMW_PL_MOB && bo->resource->mem_type == VMW_PL_MOB)
vmw_resource_unbind_list(vbo);
}
static u32 placement_flags(u32 domain, u32 desired, u32 fallback)
{
if (desired & fallback & domain)
return 0 ;
if (desired & domain)
return TTM_PL_FLAG_DESIRED;
return TTM_PL_FLAG_FALLBACK;
}
static u32
set_placement_list(struct ttm_place *pl, u32 desired, u32 fallback)
{
u32 domain = desired | fallback;
u32 n = 0 ;
/*
* The placements are ordered according to our preferences
*/
if (domain & VMW_BO_DOMAIN_MOB) {
pl[n].mem_type = VMW_PL_MOB;
pl[n].flags = placement_flags(VMW_BO_DOMAIN_MOB, desired,
fallback);
pl[n].fpfn = 0 ;
pl[n].lpfn = 0 ;
n++;
}
if (domain & VMW_BO_DOMAIN_GMR) {
pl[n].mem_type = VMW_PL_GMR;
pl[n].flags = placement_flags(VMW_BO_DOMAIN_GMR, desired,
fallback);
pl[n].fpfn = 0 ;
pl[n].lpfn = 0 ;
n++;
}
if (domain & VMW_BO_DOMAIN_VRAM) {
pl[n].mem_type = TTM_PL_VRAM;
pl[n].flags = placement_flags(VMW_BO_DOMAIN_VRAM, desired,
fallback);
pl[n].fpfn = 0 ;
pl[n].lpfn = 0 ;
n++;
}
if (domain & VMW_BO_DOMAIN_WAITABLE_SYS) {
pl[n].mem_type = VMW_PL_SYSTEM;
pl[n].flags = placement_flags(VMW_BO_DOMAIN_WAITABLE_SYS,
desired, fallback);
pl[n].fpfn = 0 ;
pl[n].lpfn = 0 ;
n++;
}
if (domain & VMW_BO_DOMAIN_SYS) {
pl[n].mem_type = TTM_PL_SYSTEM;
pl[n].flags = placement_flags(VMW_BO_DOMAIN_SYS, desired,
fallback);
pl[n].fpfn = 0 ;
pl[n].lpfn = 0 ;
n++;
}
WARN_ON(!n);
if (!n) {
pl[n].mem_type = TTM_PL_SYSTEM;
pl[n].flags = 0 ;
pl[n].fpfn = 0 ;
pl[n].lpfn = 0 ;
n++;
}
return n;
}
void vmw_bo_placement_set(struct vmw_bo *bo, u32 domain, u32 busy_domain)
{
struct ttm_device *bdev = bo->tbo.bdev;
struct vmw_private *vmw = vmw_priv_from_ttm(bdev);
struct ttm_placement *pl = &bo->placement;
bool mem_compatible = false ;
u32 i;
pl->placement = bo->places;
pl->num_placement = set_placement_list(bo->places, domain, busy_domain);
if (drm_debug_enabled(DRM_UT_DRIVER) && bo->tbo.resource) {
for (i = 0 ; i < pl->num_placement; ++i) {
if (bo->tbo.resource->mem_type == TTM_PL_SYSTEM ||
bo->tbo.resource->mem_type == pl->placement[i].mem_type)
mem_compatible = true ;
}
if (!mem_compatible)
drm_warn(&vmw->drm,
"%s: Incompatible transition from "
"bo->base.resource->mem_type = %u to domain = %u\n" ,
__func__, bo->tbo.resource->mem_type, domain);
}
}
void vmw_bo_placement_set_default_accelerated(struct vmw_bo *bo)
{
struct ttm_device *bdev = bo->tbo.bdev;
struct vmw_private *vmw = vmw_priv_from_ttm(bdev);
u32 domain = VMW_BO_DOMAIN_GMR | VMW_BO_DOMAIN_VRAM;
if (vmw->has_mob)
domain = VMW_BO_DOMAIN_MOB;
vmw_bo_placement_set(bo, domain, domain);
}
int vmw_bo_add_detached_resource(struct vmw_bo *vbo, struct vmw_resource *res)
{
return xa_err(xa_store(&vbo->detached_resources, (unsigned long )res, res, GFP_KERNEL));
}
void vmw_bo_del_detached_resource(struct vmw_bo *vbo, struct vmw_resource *res)
{
xa_erase(&vbo->detached_resources, (unsigned long )res);
}
struct vmw_surface *vmw_bo_surface(struct vmw_bo *vbo)
{
unsigned long index;
struct vmw_resource *res = NULL;
struct vmw_surface *surf = NULL;
struct rb_node *rb_itr = vbo->res_tree.rb_node;
if (vbo->is_dumb && vbo->dumb_surface) {
res = &vbo->dumb_surface->res;
goto out;
}
xa_for_each(&vbo->detached_resources, index, res) {
if (res->func->res_type == vmw_res_surface)
goto out;
}
for (rb_itr = rb_first(&vbo->res_tree); rb_itr;
rb_itr = rb_next(rb_itr)) {
res = rb_entry(rb_itr, struct vmw_resource, mob_node);
if (res->func->res_type == vmw_res_surface)
goto out;
}
out:
if (res)
surf = vmw_res_to_srf(res);
return surf;
}
s32 vmw_bo_mobid(struct vmw_bo *vbo)
{
WARN_ON(vbo->tbo.resource->mem_type != VMW_PL_MOB);
return (s32)vbo->tbo.resource->start;
}
Messung V0.5 in Prozent C=97 H=93 G=94
¤ Dauer der Verarbeitung: 0.22 Sekunden
(vorverarbeitet am 2026-09-27)
¤
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