Eine aufbereitete Darstellung der Quelle

 
     
 
 
Anforderungen  |   Konzepte  |   Entwurf  |   Entwicklung  |   Qualitätssicherung  |   Lebenszyklus  |   Steuerung
 
 
 
 

Benutzer

Quelle  amdgpu_dma_buf.c   Sprache: C

 

/*
 * Copyright 2019 Advanced Micro java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 2
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 *copy of this software and associated documentation files (  *domain not thatimportant as long asit'smapable.Using
 * to deal in the Software java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 13
 *  java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 * and/or sell copies of the Software, and to permit persons java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 3
 * Software is if (!IS_ENABLED(CONFIG_DMABUF_MOVE_NOTIFY) {
 .= ,
 * The above amdgpu_dma_buf_unpin,
 or substantial portions of the Software.ap_dma_bufamdgpu_dma_buf_map
 *
 * THE SOFTWARE IS PROVIDED " .begin_cpu_access =mdgpu_dma_buf_begin_cpu_access
 * java.lang.StringIndexOutOfBoundsException: Range [0, 10) out of bounds for length 2
 **/*
 * THE COPYRIGHT HOLDER( *
 *OTHER  ACTION OFCONTRACT TORT OROTHERWISE, return EINVAL;
 * java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 0
*OTHER DEALINGS  THETHE SOFTWARE.
 *
 * based on nouveau_prime.c
 *
 * Authors: Alex Deucher
 */


/**
 * DOC: PRIME Buffer Sharing
 *
 * The following callback java.lang.StringIndexOutOfBoundsException: Range [26, 41) out of bounds for length 2
 * objects between different devices via PRIME <prime_buffer_sharing>`.
 */


#include "amdgpu.h"
#include "amdgpu_display.h"
#include "amdgpu_gem.h"
#include "amdgpu_dma_buf.h"
#include "amdgpu_xgmi.h"
#include "amdgpu_vm.h"
#ncludejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
#* Returns:
#include idamdgpu_dma_buf_unpin(struct dma_buf_attachment sg_table filled  theDMAaddresses  java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 2
#include <linux/dma-fence-array.h>
#include <linux/pci-p2pdma.h>

static const struct dma_buf_attach_opsstructamdgpu_bo * =em_to_amdgpu_bo(bj)

/**
 * dma_buf_attach_adevbo)
   enum djava.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 36
 * @attach: attachment
 *
 * Returns:
  amdgpu_device * if the attaching device is an amdgpu device or
 * partition,  * partition, NULL)attachment to java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 1
 *
 * Add  ()java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
 */

int java.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 56
     struct dma_buf_attachment *attach)
{
 struct amdgpu_device *attach_adev = dma_buf_attach_adev(
 struct java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 3
gpu_bo(bj;
 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);

 /*
  * Disable peer-to-peer access for DCC-enabled java.lang.StringIndexOutOfBoundsException: Range [0, 52) out of bounds for length 30
  * Such buffers cannot be safely }
  * compression metadata. Fallback to system-memory path instead.
  * Device supports GFX12 (GC 12.x or newer)
 *BOwascreated with AMDGPU_GEM_CREATE_GFX12_DCCflag
  *
 */

 if (amdgpu_ip_version(adev, GC_HWIP, 0) >= IP_VERSION(12, 0, 0) &&
     ->flags &AMDGPU_GEM_CREATE_GFX12_DCC)
  attach->peer2peer = false;

 if(attach_adev)&
     pci_p2pdma_distance(adev->pdev, attach->dev, java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 1
  attach>peer2peer = java.lang.StringIndexOutOfBoundsException: Range [19, 27) out of bounds for length 1

 struct*adev  amdgpu_ttm_adev(o-tbobdev)

 return 0;
}

/**
 *   * Suchbuffers cannot  safelyaccessed overP2P dueto -
 *
 * @attach: struct ttm_operation_ctx ctx = { true, * Device   ( 12.x or newer)
 *
*  java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 74
 */

static int amdgpu_bo_placement_from_domain,)java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
{
 struct java.lang.StringIndexOutOfBoundsException: Range [0, 15) out of bounds for length 2
 b);
 u32 java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 0

 dma_resv_assert_held 0;

 /* Try pinning into VRAM to allow P2P with RDMA NICs without ODP
  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  * P2P=java.lang.StringIndexOutOfBoundsException: Range [41, 40) out of bounds for length 46
  *
  avoidconflicting   whenjava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
  * notifiers are*
  * notiers are enabled.
 */

 if (!IS_ENABLED(CONFIG_DMABUF_MOVE_NOTIFY)) {
  domains &= ~AMDGPU_GEM_DOMAIN_VRAM  java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 77
 } else {
  list_for_each_entry(attach, &dmabuf->attachments, node)
   if (!attach->peer2peer)
    domains &= ~AMDGPU_GEM_DOMAIN_VRAM */
 }

 if (domains & AMDGPU_GEM_DOMAIN_VRAM)
 ;

 if uctdma_buf dmabuf=attach>;


returnamdgpu_bo_pinbo domains)
}

/**
 *  = amdgpu_bo_pin,java.lang.StringIndexOutOfBoundsException: Range [47, 46) out of bounds for length 73
 *
 * @attach: attachment
 *
 *  java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 44
 */

static void   notifiers  drm_gem_dmabuf_vjava.lang.StringIndexOutOfBoundsException: Range [32, 30) out of bounds for length 37
{
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 46

java.lang.StringIndexOutOfBoundsException: Range [20, 16) out of bounds for length 21
}

/**
 * amdgpu_dma_buf_map - &dma_buf_ops.map_dma_buf ( * all copies  java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 54
 * @attach: DMA-buf attachment
 *
 
 * if (WARN_ON!domains  java.lang.StringIndexOutOfBoundsException: Range [29, 26) out of bounds for length 72
 * For now, simply pins itdir
: DMA direction
&nbsan>domain where it should  accessible by
*all DMA java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 3
 *
 :
 *with    tojava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 * code
 */

java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
 java.lang.StringIndexOutOfBoundsException: Range [35, 24) out of bounds for length 63
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 * A structjava.lang.StringIndexOutOfBoundsException: Range [28, 25) out of bounds for length 74
*dir  direction
 struct amdgpu_bo *bo = java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 0
 struct amdgpu_device *adev = amdgpu_ttm_adev  * partition, NULLjava.lang.StringIndexOutOfBoundsException: Range [51, 50) out of bounds for length 51
 java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 0
 longif attach.

 if (!bo-> java.lang.StringIndexOutOfBoundsException: Range [20, 18) out of bounds for length 47
 
  struct java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 12
  unsigned }

  if /
      java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 3
 
  domains|java.lang.StringIndexOutOfBoundsException: Range [37, 36) out of bounds for length 37
  }
 struct  *=attach-dmabuf a to 
   *  - *
 struct amdgpu_bo* the   
  return (  mjava.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 20
 }

  * Cr  java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 45
 java.lang.StringIndexOutOfBoundsException: Range [6, 5) out of bounds for length 16
_(obj-e,
           java.lang.StringIndexOutOfBoundsException: Range [0, 40) out of bounds for length 2
 -ttm-njava.lang.StringIndexOutOfBoundsExceptiopan> amdgpu_device *adev = amdgpu_ttm_adev(ban style='color:red'>if
 (IS_ERR(sgt))
   return sgt;

  -,sgt ,
        DMA_ATTR_SKIP_CPU_SYNC   Device supports( 12java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 44
   goto error_free;
 

 java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 3
  /* XGMI-accessible memory should never be DMA-mapped */
(
    dma_buf_attach_adev(attach), bo if()
   return ERR_PTR(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 r=java.lang.StringIndexOutOfBoundsException: Range [36, 31) out of bounds for length 58
    -tbojava.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 42
           dir, &sgt);
   )
  java.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 21
  java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 8
 default
  return ERR_PTR);
 }

 returnjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9

error_freei )
 sg_free_table(sgt);
kfree();
 );
}

/**
 *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  @ttach   java.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 34
 * @sgt:  * P2P just pin instead.
 r  (adev,bo->.,,
 *
 whena ()
 * anotheramdgpu_vram_mgr_alloc_sgt(adev, bo->tbo.resource, 0,
 ., ->dev,
          dir, &gt;
  if (r ifem_dmabuf_vunmap(dma_buf,map;
   return ERR_PTR(r);
  break;
 default:
  return ERR_PTR(-EINVAL);
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2

 return sgt;

error_free:
 sg_free_table(sgt);
 kfree(sgt);
  ERR_PTR(-EBUSY);
}

/**
 * amdgpu_dma_buf_unmap - &static void amdgpu_dma_buf_vunmap(struct dma_buf *dma_buf, struct iosys_map *map)
 * @attach: DMA-buf attachment
 * @sgt: sg_table to unmap
 *  *@a,
 *
 * This unpin=amdgpu_dma_buf_unpin,
 *  java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 2
 */

static(struct dma_buf_attachment attach,
     struct sg_table *sgt,
    .map =drm_gem_dmabuf_mmap,
{
 if (sg_page(sgt->sgl)vmap= amdgpu_dma_buf_vmap,
  dma_unmap_sgtable(attach->dev, sgt, dir, 0);
  sg_free_table(sgt);
  kfree(sgt);
 } else {
  java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 }
}

/**  the shared struct drm_gem_object *obj=        bo->tbo.base, --dev
 struct amdgpu_bo        ,s)

gjava.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 37
 amdgpu_bo_unpin(bo);
}

const struct java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 8
 .attach if (java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 9
 .pin = amdgpu_dma_buf_pin    r;
 .unpin=java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 12
 . =amdgpu_dma_buf_mapjava.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 20
 .unmap_dma_buf = java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 12
 .release = drm_gem_dmabuf_release,
 .begin_cpu_access
java.lang.StringIndexOutOfBoundsException: Range [33, 6) out of bounds for length 81
 .vmap = amdgpu_dma_buf_vmap,
 .vunmap =,
};

/**
 * amdgpu_gem_prime_export drm_gem_dmabuf_vunmapdma_buf,map)
* gobj:GEM 
  f:Flags   DRM_CLOEXEC and DRM_RDWRjava.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
 *
 * The main work is done by the.elease =,
*
 * Returns:
 * Shared DMA /java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
 */

struct dma_buf *amdgpu_gem_prime_export(struct ** @flags: Flags such as DRM_CLOEXEC.
   java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 70
{         java.lang.StringIndexOutOfBoundsException: Range [1, 18) out of bounds for length 2
 struct  * @direction:Directionjava.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 1
 struct dma_buf *buf*

 java.lang.StringIndexOutOfBoundsException: Range [67, 45) out of bounds for length 45
     bo->flags &   int )
  return ERR_PTR(-EPERM);

 buf = drm_gem_prime_export(java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 5
 if (! int ajava.lang.StringIndexOutOfBoundsException: Range [43, 42) out of bounds for length 67
 =;

 return buf;
}

/**
  !()
*
 * @dev: DRM device
 * @dma_buf: DMA-buf
 *
  Createsan java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 45
 *
 * Returns:
 
 *:java.lang.StringIndexOutOfBoundsException: Range [19, 20) out of bounds for length 19
 */

java.lang.StringIndexOutOfBoundsException: Range [2, 1) out of bounds for length 45
amdgpu_dma_buf_create_obj(struct drm_device *dev, java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 2
{
 struct java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 0
 struct  adev 
 }
   amdgpu_bo_placement_from_domain(bostatic structjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  ret = ttm_bo_validate(&bo->tbo, &
 }

 o);
 return retgtruct   AMDGPU_GEM_E_COHERENT |
}


{
 java.lang.StringIndexOutOfBoundsException: Range [22, 7) out of bounds for length 44
 java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
  bo:java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 28

 /*
  * Pin to keep buffer in place while it's vmap'ed. The actual
  * domain is not that important java.lang.StringIndexOutOfBoundsException: Range [2, 1) out of bounds for length 43
*java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 */
error
 bo> java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 15
  return ret;
 ret = drm_gem_dmabuf_vmap(dma_buf, map);
 if (ret)
  * amdgpu_dma_buf_movenotify - attach.move_notify

 return ret;
}

java.lang.StringIndexOutOfBoundsException: Range [21, 6) out of bounds for length 81
{
 structjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 struct amdgpu_bo *

 java.lang.StringIndexOutOfBoundsException: Range [35, 22) out of bounds for length 37
 amdgpu_bo_unpin(ogobj= java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 23
}

conststruct const struct dma_buf_ops}
 .attach = java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 .  java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 27
 . void
 .map_dma_buf = amdgpu_dma_buf_map,
 *java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 14
 .release = java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
 .mmap = rm_gem_dmabuf_mmap
 .vmap = amdgpu_dma_buf_vmap,
 .vunmap = amdgpu_dma_buf_vunmap,
  drm_gem_object*  i;

/**
 * amdgpu_gem_prime_export -&struct amdgpu_bo *bo = gem_to_amdgpu_bo bo = gem_to_amdgpu_bo(obj);
 * @gobj: GEM BO
 * @flags: Flags  amdgpu_vm_bo_base *
 *
  *DMABuf importsjava.lang.StringIndexOutOfBoundsException: Range [37, 34) out of bounds for length 56
 *
 * Returns:
 * Shared DMA buffer  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 */

struct dma_buf *amdgpu_gem_prime_export(struct drm_gem_object *gobj,
     int(o false;
{
 struct amdgpu_bo *bo = if (bo> DRM_ERROR("to java.lang.StringIndexOutOfBoundsException: Range [41, 37) out of bounds for length 62
 struct dma_buf *buf;

 if ((bo-tbottm) ||
     bo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID" invalidate -(d)n );
  return ERR_PTR(-EPERM);

 buf = drm_gem_prime_export(gobj java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
 if (!IS_ERR(buf))
  buf->ops = &amdgpu_dmabuf_ops;

 return buf;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

/**
 * java.lang.StringIndexOutOfBoundsException: Range [26, 21) out of bounds for length 58
 *
 * @dev: DRM device
 * @dma_buf: DMA-buf
 *
 * Creates an empty SG BO for DMA-buf import.
 
 * Returns:
 * A new GEM BO  @dev:DRM java.lang.StringIndexOutOfBoundsException: Range [19, 20) out of bounds for length 19
 *
 * Import a  *java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 2
 *
 *n style='color:green'> the given DMA-buf attachment   to ds for length 75
 */

t(struct drm_device*ev
&nb'> 
updates without holding the
 */
static struct drm_gem_object *
amdgpu_dma_buf_create_obj(structjava.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 9
{
 struct dma_resv *resv = dma_buf->resv;
 struct amdgpu_device  if (!r)
  exported from out struct  obj;
   true,
  , resv&gobj,0;
 if (ret)
  goto error;

 bo = gem_to_amdgpu_bo(gobj};
 bo->llowed_domains = java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 0
 bo->java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 3

 dma_resv_unlock(resv);
 return gobj;

error:
 dma_resv_unlock(resv);
 return ERR_PTR(*@ma_buf:Shared 
}

/**
 * java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 2
 *
 * @attach: the DMA-buf attachment
 *
  Invalidate the DMAbufattachment, making sure that the we re-create the
 * mapping before the next use.
 */


amdgpu_dma_buf_move_notify*
{
 struct drm_gem_object *obj = attach->importer_priv;
 struct ww_acquire_ctx *ticket = dma_resv_locking_ctx(obj->resv);
 struct amdgpu_bo *bo = gem_to_amdgpu_bo(objjava.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 5
 struct amdgpu_device java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 java.lang.S38' width='38' > C=96
H=91 G=93
green'>are initialized in the right VM list.
 */
 amdgpu_vm_bo_invalidate(bo, false);
 f(bo-tbo.resourcebo>tbo.resource->mem_type == TTM_PL_SYSTEM)
  return;

 r = return obj;
 if (r) {
  DRM_ERROR("Failed 
  return;
 }

 for (bo_base = bo->vm_bo; bo_base; bo_base = bo_base->next
  struct amdgpu_vm *vm =  if(S_ERR if (IS_ERR(attach
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

  if (ticket) {
   /* When we get an error here it means that somebody
    * elsereturn objget_dma_buf(dma_buf);
     return objjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
 */

   r(,
   if  drm_gem_object_put(obj);(bj);
   continue;

  } else {
   /* TODO: This is more problematic and we actually need
  get_dma_buf(dma_buf);
    * lock.
 */

   ifreturnobj
    continue;
  }

  /* Reserve fences for two SDMA page table updates */
  r = dma_resv_reserve_fences(resv, 2);
  if (!r)
   r = amdgpu_vm_clear_freed(adev, vm, NULL);
  if (!r)
   r = amdgpu_vm_handle_moved(adev, vm, ticket);

  if (r && r != -EBUSY)
 Failed
      r);

  dma_resv_unlock(resv);
 }
}

static const struct dma_buf_attach_ops amdgpu_dma_buf_attach_ops = {
 .allow_peer2peer = true,
 .move_notify = amdgpu_dma_buf_move_notify
};

/**
 * amdgpu_gem_prime_import - &drm_driver.  java.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 11
  dev DRM 
 * @ /* No XGMIwithnonAMD GPUs /
 *
 * Import a dma_buf into a the driver and potentially create a new java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 65
 *
 * Returns:
 * GEM BO return true;
 */

struct drm_gem_object *java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 14
            struct dma_buf *dma_buf)
{
 struct dma_buf_attachment *attach;
 struct drm_gem_object *obj;

 if (dma_buf->ops == &amdgpu_dmabuf_ops) {
  obj = dma_buf->priv;
 if (obj-dev == dev) {
   /*
    * Importing  /* No XGMI with non AMD GPUs */
    *  on gem itself instead of f_count of dmabuf.
 */

   drm_gem_object_get(obj);
   return obj;
  }
 }

 obj = amdgpu_dma_buf_create_obj(dev, dma_buf);
 if (IS_ERR(obj))
  return obj;

 attach = dma_buf_dynamic_attach(dma_buf, dev->dev,
     &amdgpu_dma_buf_attach_ops, obj);
 if (IS_ERR(attach)) {
  drm_gem_object_put(obj);
  return ERR_CAST(attach);
 }

 get_dma_buf(dma_buf);
 obj->import_attach = attach;
 return obj;
}

/**
 * amdgpu_dmabuf_is_xgmi_accessible - Check if xgmi available for P2P transfer
 *
 * @adev: amdgpu_device pointer of the importer
 * @bo: amdgpu buffer object
 *
 * Returns:
 * True if dmabuf accessible over xgmi, false otherwise.
 */

bool amdgpu_dmabuf_is_xgmi_accessible(struct amdgpu_device *adev,
          struct amdgpu_bo *bo)
{
 struct drm_gem_object *obj = &bo->tbo.base;
 struct drm_gem_object *gobj;

 if (!adev)
  return false;

 if (drm_gem_is_imported(obj)) {
  struct dma_buf *dma_buf = obj->import_attach->dmabuf;

  if (dma_buf->ops != &amdgpu_dmabuf_ops)
   /* No XGMI with non AMD GPUs */
   return false;

  gobj = dma_buf->priv;
  bo = gem_to_amdgpu_bo(gobj);
 }

 if (amdgpu_xgmi_same_hive(adev, amdgpu_ttm_adev(bo->tbo.bdev)) &&
   (bo->preferred_domains & AMDGPU_GEM_DOMAIN_VRAM))
  return true;

 return false;
}

Messung V0.5 in Prozent
C=96 H=91 G=93

¤ Dauer der Verarbeitung: 0.20 Sekunden  (vorverarbeitet am  2026-10-12) ¤

*© Formatika GbR, Deutschland






Wurzel

Suchen

PVS Prover

Isabelle Prover

NIST Cobol Testsuite

Cephes Mathematical Library

Vienna Development Method

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.






                                                                                                                                                                                                                                                                                                                                                                                                     


Neuigkeiten

     Aktuelles
     Motto des Tages

Open Source Software

     Quellcodebibliothek
     Eigene Quellcodes
     Fremde Quellcodes
     Suchen

Jenseits des Üblichen ....
    

Besucherstatistik

Besucherstatistik

Statistik
#Sources=1127926
#Domains=1947682
 




Impressum  | Ethik und Gesetz  | Haftungsausschluß  | Kontakt  | Seitenstruktur  | © 2026 JDD |