[PATCH 1/1] drm/xe: Add support for Wa_14028250015

[Alan Previn]

The WA is implemented by the GuC, so we just need to enable it via the
dedicated KLV. It makes the GuC complete page reclaim requests that
end in an error, instead of leaving them pending. It is only needed
when the page reclaim HW assist is in use. This WA only applies to
graphics version 3510.

v2: Update "Wa" tag to align with others. Don't gate against value of
    has_page_reclaim_hw_assist. Change the #define name to match GuC
    specs. (Gustavo).

Assisted-by: LLM
Signed-off-by: Alan Previn <alan.previn.teres.ale...@intel.com>
---
 drivers/gpu/drm/xe/abi/guc_klvs_abi.h | 1 +
 drivers/gpu/drm/xe/xe_guc_ads.c       | 5 +++++
 drivers/gpu/drm/xe/xe_wa_oob.rules    | 1 +
 3 files changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/xe/abi/guc_klvs_abi.h 
b/drivers/gpu/drm/xe/abi/guc_klvs_abi.h
index 4bcdc1a96785..4103de0b1c97 100644
--- a/drivers/gpu/drm/xe/abi/guc_klvs_abi.h
+++ b/drivers/gpu/drm/xe/abi/guc_klvs_abi.h
@@ -526,6 +526,7 @@ enum xe_guc_klv_ids {
        GUC_WA_KLV_REMAP_RANGED_TLB_INV                                         
        = 0x900f,
        GUC_WA_KLV_IGNORE_MMIO_READ_SEM_TOKEN_64                                
        = 0x9010,
        GUC_WA_KLV_IGNORE_MULTIQ_CTX_COMPLETE_WITH_PREEMPT_IN_CSB               
        = 0x9011,
+       GUC_WA_KLV_PAGE_RECLAMATION_COMPLETION_TIMEOUT                          
        = 0x9012,
 };
 
 /**
diff --git a/drivers/gpu/drm/xe/xe_guc_ads.c b/drivers/gpu/drm/xe/xe_guc_ads.c
index c3ce3c8c905a..1927b595ad67 100644
--- a/drivers/gpu/drm/xe/xe_guc_ads.c
+++ b/drivers/gpu/drm/xe/xe_guc_ads.c
@@ -389,6 +389,11 @@ static void guc_waklv_init(struct xe_guc_ads *ads)
                guc_waklv_enable(ads, NULL, 0, &offset, &remain,
                                 
GUC_WA_KLV_IGNORE_MULTIQ_CTX_COMPLETE_WITH_PREEMPT_IN_CSB);
 
+       /* On GuC 70.78 onwards, we enable GuC PRL-completion-IRQ workaround on 
applicable GMIDs */
+       if (XE_GT_WA(gt, 14028250015) && GUC_FIRMWARE_VER_AT_LEAST(&gt->uc.guc, 
70, 78))
+               guc_waklv_enable(ads, NULL, 0, &offset, &remain,
+                                
GUC_WA_KLV_PAGE_RECLAMATION_COMPLETION_TIMEOUT);
+
        /*
         * On GuC firmware 70.66 and above, use the Feature KLV (shared with the
         * WA KLV buffer); older firmware uses GUC_CTL_DISABLE_MULTI_QUEUE in
diff --git a/drivers/gpu/drm/xe/xe_wa_oob.rules 
b/drivers/gpu/drm/xe/xe_wa_oob.rules
index 61aa50a63764..fde91192bd46 100644
--- a/drivers/gpu/drm/xe/xe_wa_oob.rules
+++ b/drivers/gpu/drm/xe/xe_wa_oob.rules
@@ -78,3 +78,4 @@
                MEDIA_VERSION_RANGE(1301, 3503), FUNC(xe_rtp_match_not_sriov_vf)
 16030224309    GRAPHICS_VERSION_RANGE(3510, 3511)
 14028709524    GRAPHICS_VERSION(3510)
+14028250015    GRAPHICS_VERSION(3510)

base-commit: 2cd78713d917a02987f21b437561a5e1e13ddda2
-- 
2.43.0