[PATCH v2] drm/xe/oa: Enable Xe2+ PES disaggregation

[Ashutosh Dixit]

Xe2+ PES disaggregation for OAG needs to be enabled to obtain disaggregated
metrics when disaggregated data is needed. There is no uapi impact of this
change.

v2: Minor change to commit message

Bspec: 61101
Fixes: e936f885f1e9 ("drm/xe/oa/uapi: Expose OA stream fd")
Signed-off-by: Ashutosh Dixit <ashutosh.dixit at intel.com>
---
 drivers/gpu/drm/xe/regs/xe_oa_regs.h | 1 +
 drivers/gpu/drm/xe/xe_oa.c           | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/xe/regs/xe_oa_regs.h b/drivers/gpu/drm/xe/regs/xe_oa_regs.h
index 1189f5a540a82..a9b0091cb7ee1 100644
--- a/drivers/gpu/drm/xe/regs/xe_oa_regs.h
+++ b/drivers/gpu/drm/xe/regs/xe_oa_regs.h
@@ -52,6 +52,7 @@
 #define  OAG_OABUFFER_MEMORY_SELECT		REG_BIT(0) /* 0: PPGTT, 1: GGTT */
 
 #define OAG_OACONTROL				XE_REG(0xdaf4)
+#define  OAG_OACONTROL_OA_PES_DISAG_EN		REG_GENMASK(27, 22)
 #define  OAG_OACONTROL_OA_CCS_SELECT_MASK	REG_GENMASK(18, 16)
 #define  OAG_OACONTROL_OA_COUNTER_SEL_MASK	REG_GENMASK(4, 2)
 #define  OAG_OACONTROL_OA_COUNTER_ENABLE	REG_BIT(0)
diff --git a/drivers/gpu/drm/xe/xe_oa.c b/drivers/gpu/drm/xe/xe_oa.c
index 63286ed8457fa..0369cc016f6ab 100644
--- a/drivers/gpu/drm/xe/xe_oa.c
+++ b/drivers/gpu/drm/xe/xe_oa.c
@@ -440,6 +440,10 @@ static void xe_oa_enable(struct xe_oa_stream *stream)
 	val = __format_to_oactrl(format, regs->oa_ctrl_counter_select_mask) |
 		__oa_ccs_select(stream) | OAG_OACONTROL_OA_COUNTER_ENABLE;
 
+	if (GRAPHICS_VER(stream->oa->xe) >= 20 &&
+	    stream->hwe->oa_unit->type == DRM_XE_OA_UNIT_TYPE_OAG)
+		val |= OAG_OACONTROL_OA_PES_DISAG_EN;
+
 	xe_mmio_write32(stream->gt, regs->oa_ctrl, val);
 }
 
-- 
2.41.0