From 0ddae025ab6cefa9aba757da3cd1d27908d70b0e Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Wed, 18 Sep 2024 17:44:40 +0300 Subject: [PATCH] drm/i915: Disable compression tricks on JSL MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Bspec asks us to disable some compression trick on JSL. While the bspec description is pretty vague it looks like this is some extra trick for 10bpc+ CCS which presumably the ICL derived display engine doesn't support. Note that we aren't currently exposing 10bpc CCS scanout support, but once that gets added this presumably becomes an issue. Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20240918144445.5716-3-ville.syrjala@linux.intel.com Reviewed-by: Juha-Pekka Heikkila --- drivers/gpu/drm/i915/gt/intel_gt_regs.h | 1 + drivers/gpu/drm/i915/gt/intel_workarounds.c | 9 +++++++++ 2 files changed, 10 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h index 04577658695e..6dba65e54cdb 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h +++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h @@ -432,6 +432,7 @@ #define XEHPG_INSTDONE_GEOM_SVG MCR_REG(0x666c) #define CACHE_MODE_0_GEN7 _MMIO(0x7000) /* IVB+ */ +#define DISABLE_REPACKING_FOR_COMPRESSION REG_BIT(15) /* jsl+ */ #define RC_OP_FLUSH_ENABLE (1 << 0) #define HIZ_RAW_STALL_OPT_DISABLE (1 << 2) #define CACHE_MODE_1 _MMIO(0x7004) /* IVB+ */ diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index e539a656cfc3..6972525fe6be 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -2299,6 +2299,15 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal) GEN8_RC_SEMA_IDLE_MSG_DISABLE); } + if (IS_JASPERLAKE(i915) || IS_ELKHARTLAKE(i915)) { + /* + * "Disable Repacking for Compression (masked R/W access) + * before rendering compressed surfaces for display." + */ + wa_masked_en(wal, CACHE_MODE_0_GEN7, + DISABLE_REPACKING_FOR_COMPRESSION); + } + if (GRAPHICS_VER(i915) == 11) { /* This is not an Wa. Enable for better image quality */ wa_masked_en(wal, -- 2.50.1