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

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 63286ed..0369cc0 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);
 }