[Intel-gfx] [PATCH v4 09/18] drm/i915/xehpsdv: Add maximum sseu limits

Matt Roper
2021-07-29T17:00:34Z

Due to the removal of legacy slices and the transition to a
gslice/cslice/mslice/etc. design, we'll internally store all DSS under
"slice0."

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Caz Yokoyama <caz.yokoyama@intel.com>
---
drivers/gpu/drm/i915/gt/intel_sseu.c | 5 ++++-
drivers/gpu/drm/i915/gt/intel_sseu.h | 2 +-
drivers/gpu/drm/i915/gt/intel_sseu_debugfs.c | 2 +-
3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.c b/drivers/gpu/drm/i915/gt/intel_sseu.c
index 5d1b7d06c96b..16c0552fcd1d 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.c
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.c
@@ -145,7 +145,10 @@ static void gen12_sseu_info_init(struct intel_gt *gt)
* across the entire device. Then calculate out the DSS for each
* workload type within that software slice.
*/
- intel_sseu_set_info(sseu, 1, 6, 16);
+ if (IS_XEHPSDV(gt->i915))
+ intel_sseu_set_info(sseu, 1, 32, 16);
+ else
+ intel_sseu_set_info(sseu, 1, 6, 16);

/*
* As mentioned above, Xe_HP does not have the concept of a slice.
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.h b/drivers/gpu/drm/i915/gt/intel_sseu.h
index 74487650b08f..204ea6709460 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.h
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
@@ -16,7 +16,7 @@ struct intel_gt;
struct drm_printer;

#define GEN_MAX_SLICES (6) /* CNL upper bound */
-#define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
+#define GEN_MAX_SUBSLICES (32) /* XEHPSDV upper bound */
#define GEN_SSEU_STRIDE(max_entries) DIV_ROUND_UP(max_entries, BITS_PER_BYTE)
#define GEN_MAX_SUBSLICE_STRIDE GEN_SSEU_STRIDE(GEN_MAX_SUBSLICES)
#define GEN_MAX_EUS (16) /* TGL upper bound */
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu_debugfs.c b/drivers/gpu/drm/i915/gt/intel_sseu_debugfs.c
index 714fe8495775..a424150b052e 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu_debugfs.c
+++ b/drivers/gpu/drm/i915/gt/intel_sseu_debugfs.c
@@ -53,7 +53,7 @@ static void cherryview_sseu_device_status(struct intel_gt *gt,
static void gen10_sseu_device_status(struct intel_gt *gt,
struct sseu_dev_info *sseu)
{
-#define SS_MAX 6
+#define SS_MAX 8
struct intel_uncore *uncore = gt->uncore;
const struct intel_gt_info *info = &gt->info;
u32 s_reg[SS_MAX], eu_reg[2 * SS_MAX], eu_mask[2];