diff options
| author | Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> | 2025-08-21 23:00:55 +0530 |
|---|---|---|
| committer | Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> | 2025-08-26 11:25:36 +0530 |
| commit | 18d36fd6d13b295ebf111de2651bb398fcd1a040 (patch) | |
| tree | 60e68308f709d034fa70d8fa26bde318cd3d227a | |
| parent | a894c27407402b6f980876603e1fa66470555ff6 (diff) | |
drm/xe/svm: Support DRM_XE_SVM_MEM_RANGE_ATTR_PAT memory attribute
This attributes sets the pat_index for the svm used vma range, which is
utilized to ascertain the coherence.
v2 (Matthew Brost)
- Pat index sanity check
Cc: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://lore.kernel.org/r/20250821173104.3030148-12-himal.prasad.ghimiray@intel.com
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
| -rw-r--r-- | drivers/gpu/drm/xe/xe_vm_madvise.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/drivers/gpu/drm/xe/xe_vm_madvise.c b/drivers/gpu/drm/xe/xe_vm_madvise.c index b5fc1eedf095..3bd52063f9c2 100644 --- a/drivers/gpu/drm/xe/xe_vm_madvise.c +++ b/drivers/gpu/drm/xe/xe_vm_madvise.c @@ -9,6 +9,7 @@ #include <drm/xe_drm.h> #include "xe_bo.h" +#include "xe_pat.h" #include "xe_pt.h" #include "xe_svm.h" @@ -121,7 +122,12 @@ static void madvise_pat_index(struct xe_device *xe, struct xe_vm *vm, struct xe_vma **vmas, int num_vmas, struct drm_xe_madvise *op) { - /* Implementation pending */ + int i; + + xe_assert(vm->xe, op->type == DRM_XE_MEM_RANGE_ATTR_PAT); + + for (i = 0; i < num_vmas; i++) + vmas[i]->attr.pat_index = op->pat_index.val; } typedef void (*madvise_func)(struct xe_device *xe, struct xe_vm *vm, @@ -229,8 +235,22 @@ static bool madvise_args_are_sane(struct xe_device *xe, const struct drm_xe_madv break; case DRM_XE_MEM_RANGE_ATTR_PAT: - /*TODO: Add valid pat check */ + { + u16 coh_mode = xe_pat_index_get_coh_mode(xe, args->pat_index.val); + + if (XE_IOCTL_DBG(xe, !coh_mode)) + return false; + + if (XE_WARN_ON(coh_mode > XE_COH_AT_LEAST_1WAY)) + return false; + + if (XE_IOCTL_DBG(xe, args->pat_index.pad)) + return false; + + if (XE_IOCTL_DBG(xe, args->pat_index.reserved)) + return false; break; + } default: if (XE_IOCTL_DBG(xe, 1)) return false; |