[PATCH i-g-t v7 3/4] lib/intel_pat: Set PTA + ATS PAT entries to invalid value

["Zbigniew Kempczyński" <zbigniew.kempczynski@intel.com>]

Some platforms (like LNL) requires PTA PAT entries shouldn't be
programmed and default register value should be used.

Setting this to max during parsing pat_sw_config or pat debugfs
allows detect these platforms and ignore some actions if necessary.

Signed-off-by: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
---
 lib/intel_pat.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/intel_pat.c b/lib/intel_pat.c
index f1f5644dce..2f35bb7724 100644
--- a/lib/intel_pat.c
+++ b/lib/intel_pat.c
@@ -51,6 +51,8 @@ static int32_t xe_get_pat_config(int drm_fd, struct intel_pat_cache *xe_pat_cach
 
 	memset(xe_pat_cache, 0, sizeof(*xe_pat_cache));
 	xe_pat_cache->uc_comp = XE_PAT_IDX_INVALID;
+	xe_pat_cache->pta_mode = UINT32_MAX;
+	xe_pat_cache->pat_ats = UINT32_MAX;
 
 	while ((nread = getline(&line, &line_len, dbgfs_file)) != -1) {
 		uint32_t value = 0;
-- 
2.43.0