Re: [PATCH v6 12/19] drm/i915: Expand error state's address width to 64b

["Goel, Akash" <akash.goel@intel.com>]

Reviewed the patch & it looks fine.
Reviewed-by: "Akash Goel <akash.goel@intel.com>"

On 7/29/2015 9:53 PM, Michel Thierry wrote:
> v2: For semaphore errors, object is mapped to GGTT and offset will not
> be > 4GB, print only lower 32-bits (Akash)
> v3: Print gtt_offset in groups of 32-bit (Chris)
>
> Cc: Akash Goel <akash.goel@intel.com>
> Cc: Chris Wilson <chris@chris-wilson.co.uk>
> Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
> Signed-off-by: Michel Thierry <michel.thierry@intel.com>
> ---
>   drivers/gpu/drm/i915/i915_drv.h       |  4 ++--
>   drivers/gpu/drm/i915/i915_gpu_error.c | 24 ++++++++++++++----------
>   2 files changed, 16 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 0b5cbe8..33926d9 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -546,7 +546,7 @@ struct drm_i915_error_state {
>
>   		struct drm_i915_error_object {
>   			int page_count;
> -			u32 gtt_offset;
> +			u64 gtt_offset;
>   			u32 *pages[0];
>   		} *ringbuffer, *batchbuffer, *wa_batchbuffer, *ctx, *hws_page;
>
> @@ -572,7 +572,7 @@ struct drm_i915_error_state {
>   		u32 size;
>   		u32 name;
>   		u32 rseqno[I915_NUM_RINGS], wseqno;
> -		u32 gtt_offset;
> +		u64 gtt_offset;
>   		u32 read_domains;
>   		u32 write_domain;
>   		s32 fence_reg:I915_MAX_NUM_FENCE_BITS;
> diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
> index 6f42569..f79c952 100644
> --- a/drivers/gpu/drm/i915/i915_gpu_error.c
> +++ b/drivers/gpu/drm/i915/i915_gpu_error.c
> @@ -197,8 +197,9 @@ static void print_error_buffers(struct drm_i915_error_state_buf *m,
>   	err_printf(m, "  %s [%d]:\n", name, count);
>
>   	while (count--) {
> -		err_printf(m, "    %08x %8u %02x %02x [ ",
> -			   err->gtt_offset,
> +		err_printf(m, "    %08x_%08x %8u %02x %02x [ ",
> +			   upper_32_bits(err->gtt_offset),
> +			   lower_32_bits(err->gtt_offset),
>   			   err->size,
>   			   err->read_domains,
>   			   err->write_domain);
> @@ -426,15 +427,17 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
>   				err_printf(m, " (submitted by %s [%d])",
>   					   error->ring[i].comm,
>   					   error->ring[i].pid);
> -			err_printf(m, " --- gtt_offset = 0x%08x\n",
> -				   obj->gtt_offset);
> +			err_printf(m, " --- gtt_offset = 0x%08x %08x\n",
> +				   upper_32_bits(obj->gtt_offset),
> +				   lower_32_bits(obj->gtt_offset));
>   			print_error_obj(m, obj);
>   		}
>
>   		obj = error->ring[i].wa_batchbuffer;
>   		if (obj) {
>   			err_printf(m, "%s (w/a) --- gtt_offset = 0x%08x\n",
> -				   dev_priv->ring[i].name, obj->gtt_offset);
> +				   dev_priv->ring[i].name,
> +				   lower_32_bits(obj->gtt_offset));
>   			print_error_obj(m, obj);
>   		}
>
> @@ -453,14 +456,14 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
>   		if ((obj = error->ring[i].ringbuffer)) {
>   			err_printf(m, "%s --- ringbuffer = 0x%08x\n",
>   				   dev_priv->ring[i].name,
> -				   obj->gtt_offset);
> +				   lower_32_bits(obj->gtt_offset));
>   			print_error_obj(m, obj);
>   		}
>
>   		if ((obj = error->ring[i].hws_page)) {
>   			err_printf(m, "%s --- HW Status = 0x%08x\n",
>   				   dev_priv->ring[i].name,
> -				   obj->gtt_offset);
> +				   lower_32_bits(obj->gtt_offset));
>   			offset = 0;
>   			for (elt = 0; elt < PAGE_SIZE/16; elt += 4) {
>   				err_printf(m, "[%04x] %08x %08x %08x %08x\n",
> @@ -476,13 +479,14 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
>   		if ((obj = error->ring[i].ctx)) {
>   			err_printf(m, "%s --- HW Context = 0x%08x\n",
>   				   dev_priv->ring[i].name,
> -				   obj->gtt_offset);
> +				   lower_32_bits(obj->gtt_offset));
>   			print_error_obj(m, obj);
>   		}
>   	}
>
>   	if ((obj = error->semaphore_obj)) {
> -		err_printf(m, "Semaphore page = 0x%08x\n", obj->gtt_offset);
> +		err_printf(m, "Semaphore page = 0x%08x\n",
> +			   lower_32_bits(obj->gtt_offset));
>   		for (elt = 0; elt < PAGE_SIZE/16; elt += 4) {
>   			err_printf(m, "[%04x] %08x %08x %08x %08x\n",
>   				   elt * 4,
> @@ -590,7 +594,7 @@ i915_error_object_create(struct drm_i915_private *dev_priv,
>   	int num_pages;
>   	bool use_ggtt;
>   	int i = 0;
> -	u32 reloc_offset;
> +	u64 reloc_offset;
>
>   	if (src == NULL || src->pages == NULL)
>   		return NULL;
>
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