This is a note to let you know that I've just added the patch titled
drm/i915/guc: Add a helper for log buffer size
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-guc-add-a-helper-for-log-buffer-size.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 4ddaa438b22dd9f0406dd15bd55801b084bd75e0
Author: Alan Previn <alan.previn.teres.alexis@xxxxxxxxx>
Date: Wed Jul 27 19:20:22 2022 -0700
drm/i915/guc: Add a helper for log buffer size
[ Upstream commit 5ce27d6210018e972197ff7e5da6309f919fd61b ]
Add a helper to get GuC log buffer size.
Signed-off-by: Alan Previn <alan.previn.teres.alexis@xxxxxxxxx>
Signed-off-by: John Harrison <John.C.Harrison@xxxxxxxxx>
Reviewed-by: Matthew Brost <matthew.brost@xxxxxxxxx>
Reviewed-by: Alan Previn <alan.previn.teres.alexis@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728022028.2190627-2-John.C.Harrison@xxxxxxxxx
Stable-dep-of: befb231d5de2 ("drm/i915/guc: Fix GuC error capture sizing estimation and reporting")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c
index 25b2d7ce6640..492bbf419d4d 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c
@@ -15,6 +15,32 @@
static void guc_log_copy_debuglogs_for_relay(struct intel_guc_log *log);
+static u32 intel_guc_log_size(struct intel_guc_log *log)
+{
+ /*
+ * GuC Log buffer Layout:
+ *
+ * NB: Ordering must follow "enum guc_log_buffer_type".
+ *
+ * +===============================+ 00B
+ * | Debug state header |
+ * +-------------------------------+ 32B
+ * | Crash dump state header |
+ * +-------------------------------+ 64B
+ * | Capture state header |
+ * +-------------------------------+ 96B
+ * | |
+ * +===============================+ PAGE_SIZE (4KB)
+ * | Debug logs |
+ * +===============================+ + DEBUG_SIZE
+ * | Crash Dump logs |
+ * +===============================+ + CRASH_SIZE
+ * | Capture logs |
+ * +===============================+ + CAPTURE_SIZE
+ */
+ return PAGE_SIZE + CRASH_BUFFER_SIZE + DEBUG_BUFFER_SIZE + CAPTURE_BUFFER_SIZE;
+}
+
/**
* DOC: GuC firmware log
*
@@ -461,32 +487,11 @@ int intel_guc_log_create(struct intel_guc_log *log)
GEM_BUG_ON(log->vma);
- /*
- * GuC Log buffer Layout
- * (this ordering must follow "enum guc_log_buffer_type" definition)
- *
- * +===============================+ 00B
- * | Debug state header |
- * +-------------------------------+ 32B
- * | Crash dump state header |
- * +-------------------------------+ 64B
- * | Capture state header |
- * +-------------------------------+ 96B
- * | |
- * +===============================+ PAGE_SIZE (4KB)
- * | Debug logs |
- * +===============================+ + DEBUG_SIZE
- * | Crash Dump logs |
- * +===============================+ + CRASH_SIZE
- * | Capture logs |
- * +===============================+ + CAPTURE_SIZE
- */
if (intel_guc_capture_output_min_size_est(guc) > CAPTURE_BUFFER_SIZE)
DRM_WARN("GuC log buffer for state_capture maybe too small. %d < %d\n",
CAPTURE_BUFFER_SIZE, intel_guc_capture_output_min_size_est(guc));
- guc_log_size = PAGE_SIZE + CRASH_BUFFER_SIZE + DEBUG_BUFFER_SIZE +
- CAPTURE_BUFFER_SIZE;
+ guc_log_size = intel_guc_log_size(log);
vma = intel_guc_allocate_vma(guc, guc_log_size);
if (IS_ERR(vma)) {
