diff options
| author | Sunil Khatri <sunil.khatri@amd.com> | 2025-07-04 13:25:47 +0530 |
|---|---|---|
| committer | Christian König <christian.koenig@amd.com> | 2025-07-04 16:00:06 +0200 |
| commit | 719b378d371899c8bbaf0ce5f42bf7db4be819f9 (patch) | |
| tree | a98ff862f61fefd328b7de68cc5126b71e444da2 /drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | |
| parent | 1fd45bc21cecea390ab9c21a2406bbbe3eed4b93 (diff) | |
drm/amdgpu: add debugfs support for VM pagetable per client
Add a debugfs file under the client directory which shares
the root page table base address of the VM.
This address could be used to dump the pagetable for debug
memory issues.
Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://lore.kernel.org/r/20250704075548.1549849-4-sunil.khatri@amd.com
Signed-off-by: Christian König <christian.koenig@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c index dac4b926e7be..e49890a23ef6 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c @@ -2131,6 +2131,55 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev) return 0; } +static int amdgpu_pt_info_read(struct seq_file *m, void *unused) +{ + struct drm_file *file; + struct amdgpu_fpriv *fpriv; + struct amdgpu_bo *root_bo; + int r; + + file = m->private; + if (!file) + return -EINVAL; + + fpriv = file->driver_priv; + if (!fpriv && !fpriv->vm.root.bo) + return -ENODEV; + + root_bo = amdgpu_bo_ref(fpriv->vm.root.bo); + r = amdgpu_bo_reserve(root_bo, true); + if (r) { + amdgpu_bo_unref(&root_bo); + return -EINVAL; + } + + seq_printf(m, "gpu_address: 0x%llx\n", amdgpu_bo_gpu_offset(fpriv->vm.root.bo)); + + amdgpu_bo_unreserve(root_bo); + amdgpu_bo_unref(&root_bo); + + return 0; +} + +static int amdgpu_pt_info_open(struct inode *inode, struct file *file) +{ + return single_open(file, amdgpu_pt_info_read, inode->i_private); +} + +static const struct file_operations amdgpu_pt_info_fops = { + .owner = THIS_MODULE, + .open = amdgpu_pt_info_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +void amdgpu_debugfs_vm_init(struct drm_file *file) +{ + debugfs_create_file("vm_pagetable_info", 0444, file->debugfs_client, file, + &amdgpu_pt_info_fops); +} + #else int amdgpu_debugfs_init(struct amdgpu_device *adev) { @@ -2140,4 +2189,7 @@ int amdgpu_debugfs_regs_init(struct amdgpu_device *adev) { return 0; } +void amdgpu_debugfs_vm_init(struct drm_file *file) +{ +} #endif |