On Mon, 19 Mar 2018 16:32:05 +0100, Michał Winiarski
<michal.winiarski@xxxxxxxxx> wrote:
On Mon, Mar 19, 2018 at 01:49:23PM +0000, Michal Wajdeczko wrote:
Usually we use shift/mask macros for bit field definitions.
Union guc_log_control was not following that pattern.
Additional bonus:
add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-25 (-25)
Function old new delta
intel_guc_log_level_set 388 363 -25
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Cc: Michal Winiarski <michal.winiarski@xxxxxxxxx>
Cc: Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_guc_fwif.h | 16 +++++-----------
drivers/gpu/drm/i915/intel_guc_log.c | 11 +++--------
2 files changed, 8 insertions(+), 19 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_guc_fwif.h
b/drivers/gpu/drm/i915/intel_guc_fwif.h
index 4971685..72941bd 100644
--- a/drivers/gpu/drm/i915/intel_guc_fwif.h
+++ b/drivers/gpu/drm/i915/intel_guc_fwif.h
@@ -534,17 +534,6 @@ struct guc_log_buffer_state {
u32 version;
} __packed;
-union guc_log_control {
- struct {
- u32 logging_enabled:1;
- u32 reserved1:3;
- u32 verbosity:4;
- u32 default_logging:1;
- u32 reserved2:23;
- };
- u32 value;
-} __packed;
-
struct guc_ctx_report {
u32 report_return_status;
u32 reserved1[64];
@@ -603,6 +592,11 @@ enum intel_guc_report_status {
INTEL_GUC_REPORT_STATUS_COMPLETE = 0x4,
};
+#define GUC_LOG_CONTROL_LOGGING_ENABLED (1 << 0)
+#define GUC_LOG_CONTROL_VERBOSITY_SHIFT 4
+#define GUC_LOG_CONTROL_VERBOSITY_MASK (0xF <<
GUC_LOG_CONTROL_VERBOSITY_SHIFT)
You're not using the mask anywhere. Is it just to describe the iface?
yep, only bit-field interface
Or was it supposed to be used in guc_action_control_log?
(there's a slight change in behavior here, which may lead to confusion
when
passing out-of-range verbosity)
As you already check for out-of-range verbosity level passed by user:
if (val < GUC_LOG_LEVEL_DISABLED ||
val > GUC_VERBOSITY_TO_LOG_LEVEL(GUC_LOG_VERBOSITY_MAX))
return -EINVAL;
I can make my check in guc_action() more assertive:
GEM_BUG_ON(verbosity > GUC_LOG_VERBOSITY_MAX)
Thanks,
/m
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