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drm/amdgpu: return -ENODEV to user space when vram is lost v2 

below ioctl will return -ENODEV:
amdgpu_cs_ioctl
amdgpu_cs_wait_ioctl
amdgpu_cs_wait_fences_ioctl
amdgpu_gem_va_ioctl
amdgpu_info_ioctl

v2: only for map and replace cases in amdgpu_gem_va_ioctl

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Chunming Zhou 2017-05-15 16:48:27 +08:00 committed by Alex Deucher
parent 0c49e0b8a4
commit f1892138ab
5 changed files with 31 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View File

@ -824,6 +824,7 @@ struct amdgpu_fpriv {
struct mutex bo_list_lock;
struct idr bo_list_handles;
struct amdgpu_ctx_mgr ctx_mgr;
u32 vram_lost_counter;
};
/*
@ -1528,6 +1529,7 @@ struct amdgpu_device {
atomic64_t num_bytes_moved;
atomic64_t num_evictions;
atomic_t gpu_reset_counter;
atomic_t vram_lost_counter;
/* data for buffer migration throttling */
struct {
@ -1914,6 +1916,8 @@ static inline bool amdgpu_has_atpx(void) { return false; }
extern const struct drm_ioctl_desc amdgpu_ioctls_kms[];
extern const int amdgpu_max_kms_ioctl;
bool amdgpu_kms_vram_lost(struct amdgpu_device *adev,
struct amdgpu_fpriv *fpriv);
int amdgpu_driver_load_kms(struct drm_device *dev, unsigned long flags);
void amdgpu_driver_unload_kms(struct drm_device *dev);
void amdgpu_driver_lastclose_kms(struct drm_device *dev);

9
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
View File

@ -1097,6 +1097,7 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
{
struct amdgpu_device *adev = dev->dev_private;
struct amdgpu_fpriv *fpriv = filp->driver_priv;
union drm_amdgpu_cs *cs = data;
struct amdgpu_cs_parser parser = {};
bool reserved_buffers = false;
@ -1104,6 +1105,8 @@ int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
if (!adev->accel_working)
return -EBUSY;
if (amdgpu_kms_vram_lost(adev, fpriv))
return -ENODEV;
parser.adev = adev;
parser.filp = filp;
@ -1165,12 +1168,15 @@ int amdgpu_cs_wait_ioctl(struct drm_device *dev, void *data,
{
union drm_amdgpu_wait_cs *wait = data;
struct amdgpu_device *adev = dev->dev_private;
struct amdgpu_fpriv *fpriv = filp->driver_priv;
unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout);
struct amdgpu_ring *ring = NULL;
struct amdgpu_ctx *ctx;
struct dma_fence *fence;
long r;
if (amdgpu_kms_vram_lost(adev, fpriv))
return -ENODEV;
r = amdgpu_cs_get_ring(adev, wait->in.ip_type, wait->in.ip_instance,
wait->in.ring, &ring);
if (r)
@ -1344,12 +1350,15 @@ int amdgpu_cs_wait_fences_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
struct amdgpu_device *adev = dev->dev_private;
struct amdgpu_fpriv *fpriv = filp->driver_priv;
union drm_amdgpu_wait_fences *wait = data;
uint32_t fence_count = wait->in.fence_count;
struct drm_amdgpu_fence *fences_user;
struct drm_amdgpu_fence *fences;
int r;
if (amdgpu_kms_vram_lost(adev, fpriv))
return -ENODEV;
/* Get the fences from userspace */
fences = kmalloc_array(fence_count, sizeof(struct drm_amdgpu_fence),
GFP_KERNEL);

4
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View File

@ -2839,8 +2839,10 @@ retry:
if (r)
goto out;
vram_lost = amdgpu_check_vram_lost(adev);
if (vram_lost)
if (vram_lost) {
DRM_ERROR("VRAM is lost!\n");
atomic_inc(&adev->vram_lost_counter);
}
r = amdgpu_ttm_recover_gart(adev);
if (r)
goto out;

5
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
View File

@ -597,6 +597,11 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
args->operation);
return -EINVAL;
}
if ((args->operation == AMDGPU_VA_OP_MAP) ||
(args->operation == AMDGPU_VA_OP_REPLACE)) {
if (amdgpu_kms_vram_lost(adev, fpriv))
return -ENODEV;
}
INIT_LIST_HEAD(&list);
if ((args->operation != AMDGPU_VA_OP_CLEAR) &&

10
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
View File

@ -235,6 +235,7 @@ static int amdgpu_firmware_info(struct drm_amdgpu_info_firmware *fw_info,
static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
{
struct amdgpu_device *adev = dev->dev_private;
struct amdgpu_fpriv *fpriv = filp->driver_priv;
struct drm_amdgpu_info *info = data;
struct amdgpu_mode_info *minfo = &adev->mode_info;
void __user *out = (void __user *)(uintptr_t)info->return_pointer;
@ -247,6 +248,8 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
if (!info->return_size || !info->return_pointer)
return -EINVAL;
if (amdgpu_kms_vram_lost(adev, fpriv))
return -ENODEV;
switch (info->query) {
case AMDGPU_INFO_ACCEL_WORKING:
@ -747,6 +750,12 @@ void amdgpu_driver_lastclose_kms(struct drm_device *dev)
vga_switcheroo_process_delayed_switch();
}
bool amdgpu_kms_vram_lost(struct amdgpu_device *adev,
struct amdgpu_fpriv *fpriv)
{
return fpriv->vram_lost_counter != atomic_read(&adev->vram_lost_counter);
}
/**
* amdgpu_driver_open_kms - drm callback for open
*
@ -799,6 +808,7 @@ int amdgpu_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
amdgpu_ctx_mgr_init(&fpriv->ctx_mgr);
fpriv->vram_lost_counter = atomic_read(&adev->vram_lost_counter);
file_priv->driver_priv = fpriv;
out_suspend: