diff mbox series

[1/7] drm/i915/guc: Add a helper for log buffer size

Message ID 20220728022028.2190627-2-John.C.Harrison@Intel.com (mailing list archive)
State New, archived
Headers show
Series Fixes and improvements to GuC logging and error capture | expand

Commit Message

John Harrison July 28, 2022, 2:20 a.m. UTC 
From: Alan Previn <alan.previn.teres.alexis@intel.com>

Add a helper to get GuC log buffer size.

Signed-off-by: Alan Previn <alan.previn.teres.alexis@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
---
 drivers/gpu/drm/i915/gt/uc/intel_guc_log.c | 49 ++++++++++++----------
 1 file changed, 27 insertions(+), 22 deletions(-)

Comments

Teres Alexis, Alan Previn Aug. 2, 2022, 5:37 p.m. UTC | #1 
Something minor in comments, so conditional R-B (please fix on the way in or reply to correct me):

Reviewed-by: Alan Previn <alan.previn.teres.alexis@intel.com>

On Wed, 2022-07-27 at 19:20 -0700, Harrison, John C wrote:
> From: Alan Previn <alan.previn.teres.alexis@intel.com>
> 
> Add a helper to get GuC log buffer size.
> 
> Signed-off-by: Alan Previn <alan.previn.teres.alexis@intel.com>
> Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
> Reviewed-by: Matthew Brost <matthew.brost@intel.com>
> ---
>  drivers/gpu/drm/i915/gt/uc/intel_guc_log.c | 49 ++++++++++++----------
>  1 file changed, 27 insertions(+), 22 deletions(-)
> 
> 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 25b2d7ce6640d..492bbf419d4df 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
> 
Something we might have missed in prior updates but i think the bufer state is now 36 bytes long no? (9 dwords).


> +	 *  |    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)) {
> -- 
> 2.37.1
>
John Harrison Aug. 3, 2022, 12:29 a.m. UTC | #2 
On 8/2/2022 10:37, Teres Alexis, Alan Previn wrote:
> Something minor in comments, so conditional R-B (please fix on the way in or reply to correct me):
>
> Reviewed-by: Alan Previn <alan.previn.teres.alexis@intel.com>
>
> On Wed, 2022-07-27 at 19:20 -0700, Harrison, John C wrote:
>> From: Alan Previn <alan.previn.teres.alexis@intel.com>
>>
>> Add a helper to get GuC log buffer size.
>>
>> Signed-off-by: Alan Previn <alan.previn.teres.alexis@intel.com>
>> Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
>> Reviewed-by: Matthew Brost <matthew.brost@intel.com>
>> ---
>>   drivers/gpu/drm/i915/gt/uc/intel_guc_log.c | 49 ++++++++++++----------
>>   1 file changed, 27 insertions(+), 22 deletions(-)
>>
>> 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 25b2d7ce6640d..492bbf419d4df 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
>>
> Something we might have missed in prior updates but i think the bufer state is now 36 bytes long no? (9 dwords).
Good catch. Yes, an extra word was added some while back.

John.

>
>
>> +	 *  |    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)) {
>> -- 
>> 2.37.1
>>
diff mbox series

Patch

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 25b2d7ce6640d..492bbf419d4df 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)) {