From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8065BECAAD3 for ; Mon, 19 Sep 2022 22:34:22 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8512310E1AD; Mon, 19 Sep 2022 22:33:24 +0000 (UTC) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTPS id 183D310E192; Mon, 19 Sep 2022 22:33:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1663626790; x=1695162790; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=rCMAqUkuAO19Sk8BmtF5tyXXkpSyfF5dr2Fiy0UGz2o=; b=GT21VTooaaZVXkFZnXtIzIR7b71Gatda2qs+XSPmPBCjVlhFlgCih/8C cnaEyE0YMhg07SnFFHqPP4rN1dyf5/03iIUAEfmw0MwoaEJNIIMlkhkRq OhF0IPE6Qj/XACj7MicREtxuFZjza73IwX/fbaRvJ3yLgKnSpcDZzHIa2 MnVYkdO/LAbsSVwCetmuCNqn1RIc27VFepwN48H7p54WgzlXjPQgYqwq7 edjNnPj3J/mSsdjrslTgUK+fTXqbJJ0nyWjwTDXr+5szYxlp/P6WSZ+Ov UHlxEHFXdL5aaAyWOzeNWWwprvgtYdZ27lVYZps8Qfr2pjO/1x6fTqWre Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10475"; a="286585485" X-IronPort-AV: E=Sophos;i="5.93,329,1654585200"; d="scan'208";a="286585485" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Sep 2022 15:33:09 -0700 X-IronPort-AV: E=Sophos;i="5.93,329,1654585200"; d="scan'208";a="794030779" Received: from mdroper-desk1.fm.intel.com ([10.1.27.134]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Sep 2022 15:33:08 -0700 From: Matt Roper To: intel-gfx@lists.freedesktop.org Date: Mon, 19 Sep 2022 15:32:55 -0700 Message-Id: <20220919223259.263525-9-matthew.d.roper@intel.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220919223259.263525-1-matthew.d.roper@intel.com> References: <20220919223259.263525-1-matthew.d.roper@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [Intel-gfx] [PATCH 08/12] drm/i915/guc: Handle save/restore of MCR registers explicitly X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dri-devel@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" MCR registers can be placed on the GuC's save/restore list, but at the moment they are always handled in a multicast manner (i.e., the GuC reads one instance to save the value and then does a multicast write to restore that single value to all instances). In the future the GuC will probably give us an alternate interface to do unicast per-instance save/restore operations, so we should be very clear about which registers on the list are MCR registers (and in the future which save/restore behavior we want for them). Signed-off-by: Matt Roper --- drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c | 55 +++++++++++++--------- 1 file changed, 34 insertions(+), 21 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c index 7d9f4f57ca95..b5d3e3ef1787 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c @@ -277,24 +277,16 @@ __mmio_reg_add(struct temp_regset *regset, struct guc_mmio_reg *reg) return slot; } -#define GUC_REGSET_STEERING(group, instance) ( \ - FIELD_PREP(GUC_REGSET_STEERING_GROUP, (group)) | \ - FIELD_PREP(GUC_REGSET_STEERING_INSTANCE, (instance)) | \ - GUC_REGSET_NEEDS_STEERING \ -) - static long __must_check guc_mmio_reg_add(struct intel_gt *gt, struct temp_regset *regset, - i915_reg_t reg, u32 flags) + u32 offset, u32 flags) { u32 count = regset->storage_used - (regset->registers - regset->storage); - u32 offset = i915_mmio_reg_offset(reg); struct guc_mmio_reg entry = { .offset = offset, .flags = flags, }; struct guc_mmio_reg *slot; - u8 group, inst; /* * The mmio list is built using separate lists within the driver. @@ -306,17 +298,6 @@ static long __must_check guc_mmio_reg_add(struct intel_gt *gt, sizeof(entry), guc_mmio_reg_cmp)) return 0; - /* - * The GuC doesn't have a default steering, so we need to explicitly - * steer all registers that need steering. However, we do not keep track - * of all the steering ranges, only of those that have a chance of using - * a non-default steering from the i915 pov. Instead of adding such - * tracking, it is easier to just program the default steering for all - * regs that don't need a non-default one. - */ - intel_gt_mcr_get_nonterminated_steering(gt, reg, &group, &inst); - entry.flags |= GUC_REGSET_STEERING(group, inst); - slot = __mmio_reg_add(regset, &entry); if (IS_ERR(slot)) return PTR_ERR(slot); @@ -334,6 +315,38 @@ static long __must_check guc_mmio_reg_add(struct intel_gt *gt, #define GUC_MMIO_REG_ADD(gt, regset, reg, masked) \ guc_mmio_reg_add(gt, \ + regset, \ + i915_mmio_reg_offset(reg), \ + (masked) ? GUC_REGSET_MASKED : 0) + +#define GUC_REGSET_STEERING(group, instance) ( \ + FIELD_PREP(GUC_REGSET_STEERING_GROUP, (group)) | \ + FIELD_PREP(GUC_REGSET_STEERING_INSTANCE, (instance)) | \ + GUC_REGSET_NEEDS_STEERING \ +) + +static long __must_check guc_mcr_reg_add(struct intel_gt *gt, + struct temp_regset *regset, + i915_reg_t reg, u32 flags) +{ + u8 group, inst; + + /* + * The GuC doesn't have a default steering, so we need to explicitly + * steer all registers that need steering. However, we do not keep track + * of all the steering ranges, only of those that have a chance of using + * a non-default steering from the i915 pov. Instead of adding such + * tracking, it is easier to just program the default steering for all + * regs that don't need a non-default one. + */ + intel_gt_mcr_get_nonterminated_steering(gt, reg, &group, &inst); + flags |= GUC_REGSET_STEERING(group, inst); + + return guc_mmio_reg_add(gt, regset, i915_mmio_reg_offset(reg), flags); +} + +#define GUC_MCR_REG_ADD(gt, regset, reg, masked) \ + guc_mcr_reg_add(gt, \ regset, \ (reg), \ (masked) ? GUC_REGSET_MASKED : 0) @@ -374,7 +387,7 @@ static int guc_mmio_regset_init(struct temp_regset *regset, /* add in local MOCS registers */ for (i = 0; i < LNCFCMOCS_REG_COUNT; i++) if (GRAPHICS_VER_FULL(engine->i915) >= IP_VER(12, 50)) - ret |= GUC_MMIO_REG_ADD(gt, regset, XEHP_LNCFCMOCS(i), false); + ret |= GUC_MCR_REG_ADD(gt, regset, XEHP_LNCFCMOCS(i), false); else ret |= GUC_MMIO_REG_ADD(gt, regset, GEN9_LNCFCMOCS(i), false); -- 2.37.3