drm/xe/oa: Enable Xe2+ PES disaggregation

Enable Xe2+ PES disaggregation (for OAG) to retrieve disaggregated metrics
when disaggregated data is needed. Userspace can select whether to receive
aggregated or disaggregated metrics via the particular OA configuration it
uses (programmed via DRM_XE_OBSERVATION_OP_ADD_CONFIG).

Bspec: 61101
Fixes: e936f885f1e9 ("drm/xe/oa/uapi: Expose OA stream fd")
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240909165933.2638765-1-ashutosh.dixit@intel.com
Cc: stable@vger.kernel.org
(cherry picked from commit fb2551a0e93897aec7fb3d4f473ebc06b146d160)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

diff --git a/drivers/gpu/drm/xe/regs/xe_oa_regs.h b/drivers/gpu/drm/xe/regs/xe_oa_regs.h
index 1189f5a..a9b0091 100644 (file)
--- 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 6d69f75..22f14eb 100644 (file)
--- 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);
 }