1 files changed, 46 insertions, 11 deletions

diff --git a/drivers/gpu/drm/xe/xe_guc_buf.c b/drivers/gpu/drm/xe/xe_guc_buf.c
index 502ca3a4ee60..3ce442500130 100644
--- a/drivers/gpu/drm/xe/xe_guc_buf.c
+++ b/drivers/gpu/drm/xe/xe_guc_buf.c
@@ -13,6 +13,8 @@
 #include "xe_guc_buf.h"
 #include "xe_sa.h"
 
+#define XE_GUC_BUF_CACHE_DEFAULT_SIZE SZ_8K
+
 static struct xe_guc *cache_to_guc(struct xe_guc_buf_cache *cache)
 {
 	return container_of(cache, struct xe_guc, buf);
@@ -23,21 +25,12 @@ static struct xe_gt *cache_to_gt(struct xe_guc_buf_cache *cache)
 	return guc_to_gt(cache_to_guc(cache));
 }
 
-/**
- * xe_guc_buf_cache_init() - Initialize the GuC Buffer Cache.
- * @cache: the &xe_guc_buf_cache to initialize
- *
- * The Buffer Cache allows to obtain a reusable buffer that can be used to pass
- * indirect H2G data to GuC without a need to create a ad-hoc allocation.
- *
- * Return: 0 on success or a negative error code on failure.
- */
-int xe_guc_buf_cache_init(struct xe_guc_buf_cache *cache)
+static int guc_buf_cache_init(struct xe_guc_buf_cache *cache, u32 size)
 {
 	struct xe_gt *gt = cache_to_gt(cache);
 	struct xe_sa_manager *sam;
 
-	sam = __xe_sa_bo_manager_init(gt_to_tile(gt), SZ_8K, 0, sizeof(u32));
+	sam = __xe_sa_bo_manager_init(gt_to_tile(gt), size, 0, sizeof(u32));
 	if (IS_ERR(sam))
 		return PTR_ERR(sam);
 	cache->sam = sam;
@@ -49,6 +42,35 @@ int xe_guc_buf_cache_init(struct xe_guc_buf_cache *cache)
 }
 
 /**
+ * xe_guc_buf_cache_init() - Initialize the GuC Buffer Cache.
+ * @cache: the &xe_guc_buf_cache to initialize
+ *
+ * The Buffer Cache allows to obtain a reusable buffer that can be used to pass
+ * data to GuC or read data from GuC without a need to create a ad-hoc allocation.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+int xe_guc_buf_cache_init(struct xe_guc_buf_cache *cache)
+{
+	return guc_buf_cache_init(cache, XE_GUC_BUF_CACHE_DEFAULT_SIZE);
+}
+
+/**
+ * xe_guc_buf_cache_init_with_size() - Initialize the GuC Buffer Cache.
+ * @cache: the &xe_guc_buf_cache to initialize
+ * @size: size in bytes
+ *
+ * Like xe_guc_buf_cache_init(), except it allows the caller to make the cache
+ * buffer larger, allowing to accommodate larger objects.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+int xe_guc_buf_cache_init_with_size(struct xe_guc_buf_cache *cache, u32 size)
+{
+	return guc_buf_cache_init(cache, max(XE_GUC_BUF_CACHE_DEFAULT_SIZE, size));
+}
+
+/**
  * xe_guc_buf_cache_dwords() - Number of dwords the GuC Buffer Cache supports.
  * @cache: the &xe_guc_buf_cache to query
  *
@@ -116,6 +138,19 @@ void xe_guc_buf_release(const struct xe_guc_buf buf)
 }
 
 /**
+ * xe_guc_buf_sync_read() - Copy the data from the GPU memory to the sub-allocation.
+ * @buf: the &xe_guc_buf to sync
+ *
+ * Return: a CPU pointer of the sub-allocation.
+ */
+void *xe_guc_buf_sync_read(const struct xe_guc_buf buf)
+{
+	xe_sa_bo_sync_read(buf.sa);
+
+	return xe_sa_bo_cpu_addr(buf.sa);
+}
+
+/**
  * xe_guc_buf_flush() - Copy the data from the sub-allocation to the GPU memory.
  * @buf: the &xe_guc_buf to flush
  *