diff --git a/src/gallium/drivers/iris/iris_bufmgr.c b/src/gallium/drivers/iris/iris_bufmgr.c
index e7e55049f36..f12f3edae87 100644
--- a/src/gallium/drivers/iris/iris_bufmgr.c
+++ b/src/gallium/drivers/iris/iris_bufmgr.c
@@ -320,7 +320,7 @@ bucket_for_size(struct iris_bufmgr *bufmgr, uint64_t size,
 
    const struct intel_device_info *devinfo = &bufmgr->devinfo;
    if (devinfo->has_set_pat_uapi &&
-       iris_pat_index_for_bo_flags(devinfo, flags) != devinfo->pat.writeback)
+       iris_pat_index_for_bo_flags(devinfo, flags) != devinfo->pat.writeback.index)
       return NULL;
 
    if (devinfo->kmd_type == INTEL_KMD_TYPE_XE &&
diff --git a/src/gallium/drivers/iris/iris_bufmgr.h b/src/gallium/drivers/iris/iris_bufmgr.h
index 8dfd72907ad..97a2690e808 100644
--- a/src/gallium/drivers/iris/iris_bufmgr.h
+++ b/src/gallium/drivers/iris/iris_bufmgr.h
@@ -547,12 +547,12 @@ iris_pat_index_for_bo_flags(const struct intel_device_info *devinfo,
                             unsigned alloc_flags)
 {
    if (alloc_flags & BO_ALLOC_COHERENT)
-      return devinfo->pat.coherent;
+      return devinfo->pat.coherent.index;
 
    if (alloc_flags & (BO_ALLOC_SHARED | BO_ALLOC_SCANOUT))
-      return devinfo->pat.scanout;
+      return devinfo->pat.scanout.index;
 
-   return devinfo->pat.writeback;
+   return devinfo->pat.writeback.index;
 }
 
 enum iris_memory_zone iris_memzone_for_address(uint64_t address);
diff --git a/src/intel/dev/intel_device_info.c b/src/intel/dev/intel_device_info.c
index 015b6dbd392..d58fa3917fb 100644
--- a/src/intel/dev/intel_device_info.c
+++ b/src/intel/dev/intel_device_info.c
@@ -1136,11 +1136,9 @@ static const struct intel_device_info intel_device_info_atsm_g11 = {
    .has_coarse_pixel_primitive_and_cb = true,                   \
    .has_mesh_shading = true,                                    \
    .has_ray_tracing = true,                                     \
-   .pat = {                                                     \
-      .coherent = 3, /* 1-way coherent */                       \
-      .scanout = 3, /* 1-way coherent */                        \
-      .writeback = 0,                                           \
-   }
+   .pat.coherent = PAT_ENTRY(3, WB, 1WAY),                      \
+   .pat.scanout = PAT_ENTRY(3, WB, 1WAY),                       \
+   .pat.writeback = PAT_ENTRY(0, WB, NONE)
 
 static const struct intel_device_info intel_device_info_mtl_u = {
    MTL_FEATURES,
diff --git a/src/intel/dev/intel_device_info.h b/src/intel/dev/intel_device_info.h
index b1e98231957..321d85b9745 100644
--- a/src/intel/dev/intel_device_info.h
+++ b/src/intel/dev/intel_device_info.h
@@ -110,6 +110,31 @@ struct intel_memory_class_instance {
    uint16_t instance;
 };
 
+enum intel_device_info_mmap_mode {
+      INTEL_DEVICE_INFO_MMAP_MODE_UC = 0,
+      INTEL_DEVICE_INFO_MMAP_MODE_WC,
+      INTEL_DEVICE_INFO_MMAP_MODE_WB,
+};
+
+enum intel_device_info_coherency_mode {
+   INTEL_DEVICE_INFO_COHERENCY_MODE_NONE = 0,
+   INTEL_DEVICE_INFO_COHERENCY_MODE_1WAY, /* CPU caches are snooped by GPU */
+   INTEL_DEVICE_INFO_COHERENCY_MODE_2WAY /* Fully coherent between GPU and CPU */
+};
+
+struct intel_device_info_pat_entry {
+   uint8_t index;
+   enum intel_device_info_mmap_mode mmap;
+   enum intel_device_info_coherency_mode coherency;
+};
+
+#define PAT_ENTRY(index_, mmap_, coh_)                      \
+{                                                           \
+   .index = index_,                                         \
+   .mmap = INTEL_DEVICE_INFO_MMAP_MODE_##mmap_,             \
+   .coherency = INTEL_DEVICE_INFO_COHERENCY_MODE_##coh_     \
+}
+
 /**
  * Intel hardware information and quirks
  */
@@ -462,9 +487,9 @@ struct intel_device_info
    } mem;
 
    struct {
-      uint8_t coherent;
-      uint8_t scanout;
-      uint8_t writeback;
+      struct intel_device_info_pat_entry coherent;
+      struct intel_device_info_pat_entry scanout;
+      struct intel_device_info_pat_entry writeback;
    } pat;
 
    BITSET_DECLARE(workarounds, INTEL_WA_NUM);
diff --git a/src/intel/vulkan/i915/anv_kmd_backend.c b/src/intel/vulkan/i915/anv_kmd_backend.c
index d0f99b542bd..78d7ef9fcb4 100644
--- a/src/intel/vulkan/i915/anv_kmd_backend.c
+++ b/src/intel/vulkan/i915/anv_kmd_backend.c
@@ -92,11 +92,11 @@ i915_gem_create(struct anv_device *device,
    if (device->info->has_set_pat_uapi) {
       /* Set PAT param */
       if (alloc_flags & (ANV_BO_ALLOC_SNOOPED))
-         set_pat_param.pat_index = device->info->pat.coherent;
+         set_pat_param.pat_index = device->info->pat.coherent.index;
       else if (alloc_flags & (ANV_BO_ALLOC_EXTERNAL | ANV_BO_ALLOC_SCANOUT))
-         set_pat_param.pat_index = device->info->pat.scanout;
+         set_pat_param.pat_index = device->info->pat.scanout.index;
       else
-         set_pat_param.pat_index = device->info->pat.writeback;
+         set_pat_param.pat_index = device->info->pat.writeback.index;
       intel_i915_gem_add_ext(&gem_create.extensions,
                              I915_GEM_CREATE_EXT_SET_PAT,
                              &set_pat_param.base);