From: Ville Syrjälä Date: Wed, 18 Sep 2024 14:44:40 +0000 (+0300) Subject: drm/i915: Disable compression tricks on JSL X-Git-Tag: v6.13-rc1~122^2~19^2~6 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0ddae025ab6cefa9aba757da3cd1d27908d70b0e;p=thirdparty%2Fkernel%2Flinux.git drm/i915: Disable compression tricks on JSL 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 --- diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h index 04577658695ef..6dba65e54cdb8 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 e539a656cfc3a..6972525fe6bee 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,