[PATCH v9 4/5] tests/xe_pat: use debugfs reserved flags

[Xin Wang <x.wang@intel.com>]

Stop hard-coding a reserved PAT index range for Xe2+. Instead,
parse the PAT software configuration via xe_get_pat_sw_config()
and use entries[].rsvd to decide which indices should be rejected
by the kernel.
This keeps the test aligned with kernel PAT layouts across
platforms and future changes.

CC: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Xin Wang <x.wang@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
---
 tests/intel/xe_pat.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/tests/intel/xe_pat.c b/tests/intel/xe_pat.c
index f003f0046..bcc86cd70 100644
--- a/tests/intel/xe_pat.c
+++ b/tests/intel/xe_pat.c
@@ -180,8 +180,8 @@ static void pat_sanity(int fd)
  */
 static void pat_index_all(int fd)
 {
-	uint16_t dev_id = intel_get_drm_devid(fd);
 	size_t size = xe_get_default_alignment(fd);
+	struct intel_pat_cache pat_sw_config = {};
 	uint32_t vm, bo;
 	uint8_t pat_index;
 
@@ -210,10 +210,12 @@ static void pat_index_all(int fd)
 
 	igt_assert(intel_get_max_pat_index(fd));
 
+	xe_fetch_pat_sw_config_or_skip(fd, &pat_sw_config);
+
 	for (pat_index = 0; pat_index <= intel_get_max_pat_index(fd);
 	     pat_index++) {
-		if (intel_get_device_info(dev_id)->graphics_ver >= 20 &&
-		    pat_index >= 16 && pat_index <= 19) { /* hw reserved */
+
+		if (pat_sw_config.entries[pat_index].rsvd) {
 			igt_assert_eq(__xe_vm_bind(fd, vm, 0, bo, 0, 0x40000,
 						   size, DRM_XE_VM_BIND_OP_MAP, 0, NULL, 0, 0,
 						   pat_index, 0),
-- 
2.43.0