From patchwork Wed Sep 7 18:24:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniele Ceraolo Spurio X-Patchwork-Id: 12969317 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 981E8C54EE9 for ; Wed, 7 Sep 2022 18:24:43 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1DFE010E826; Wed, 7 Sep 2022 18:24:42 +0000 (UTC) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by gabe.freedesktop.org (Postfix) with ESMTPS id 998EA10E82C for ; Wed, 7 Sep 2022 18:24:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1662575076; x=1694111076; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ppXOw5DzXhIZ4ede3x+nXtAicjCinOB+yV0GTRR0rZ0=; b=lM5BzGlpe4qgdYIBpM9y4yCw7NP4ekJQHYe2q5WjvugzeAUBXIf7ePFt rSOaIaxzoiGknNr/J3qhUUhzaDqvfr9oSCtWlDrQV5jaqehl9Hqkd5kko 4oBq8dYq1eKRFTDpFcGZRV/egk7BjzsAo1BCf+4s/f5DYHsKleslo5SZ/ 1kRJ3eAL9DsZ94SatYbyv8e2AWsQ5C4GwU91mSU269jmGmIgYDYobg0FL /fDiQgbeBdZpUPRK1mnKBT/kJxKYNeCDsoTvf/Rn8Xsgw5UcO9yeBCqj7 X5maUcUP94UzOtZ3u0vlIu+QLNpoT517mXpBr1KMSz89kXahTvq9zpGkw Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10463"; a="276697726" X-IronPort-AV: E=Sophos;i="5.93,297,1654585200"; d="scan'208";a="276697726" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Sep 2022 11:24:36 -0700 X-IronPort-AV: E=Sophos;i="5.93,297,1654585200"; d="scan'208";a="676321493" Received: from valcore-skull-1.fm.intel.com ([10.1.27.19]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Sep 2022 11:24:35 -0700 From: Daniele Ceraolo Spurio To: intel-gfx@lists.freedesktop.org Date: Wed, 7 Sep 2022 11:24:23 -0700 Message-Id: <20220907182423.657391-1-daniele.ceraolospurio@intel.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220907155813.1427526-16-tomas.winkler@intel.com> References: <20220907155813.1427526-16-tomas.winkler@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH] drm/i915/gsc: allocate extended operational memory in LMEM 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: Tomas Winkler , Alexander Usyskin , Matthew Auld , Alan Previn Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Tomas Winkler GSC requires more operational memory than available on chip. Reserve 4M of LMEM for GSC operation. The memory is provided to the GSC as struct resource to the auxiliary data of the child device. v2: use I915_BO_ALLOC_CPU_CLEAR to clear the allocated memory instead of doing a manual memset (Matt) Cc: Alan Previn Cc: Matthew Auld Signed-off-by: Tomas Winkler Signed-off-by: Daniele Ceraolo Spurio Signed-off-by: Alexander Usyskin --- drivers/gpu/drm/i915/gt/intel_gsc.c | 79 ++++++++++++++++++++++++++--- drivers/gpu/drm/i915/gt/intel_gsc.h | 3 ++ 2 files changed, 75 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_gsc.c b/drivers/gpu/drm/i915/gt/intel_gsc.c index e1040c8f2fd3..7af6db3194dd 100644 --- a/drivers/gpu/drm/i915/gt/intel_gsc.c +++ b/drivers/gpu/drm/i915/gt/intel_gsc.c @@ -7,6 +7,7 @@ #include #include "i915_drv.h" #include "i915_reg.h" +#include "gem/i915_gem_region.h" #include "gt/intel_gsc.h" #include "gt/intel_gt.h" @@ -36,12 +37,56 @@ static int gsc_irq_init(int irq) return irq_set_chip_data(irq, NULL); } +static int +gsc_ext_om_alloc(struct intel_gsc *gsc, struct intel_gsc_intf *intf, size_t size) +{ + struct intel_gt *gt = gsc_to_gt(gsc); + struct drm_i915_gem_object *obj; + int err; + + obj = i915_gem_object_create_lmem(gt->i915, size, + I915_BO_ALLOC_CONTIGUOUS | + I915_BO_ALLOC_CPU_CLEAR); + if (IS_ERR(obj)) { + drm_err(>->i915->drm, "Failed to allocate gsc memory\n"); + return PTR_ERR(obj); + } + + err = i915_gem_object_pin_pages_unlocked(obj); + if (err) { + drm_err(>->i915->drm, "Failed to pin pages for gsc memory\n"); + goto out_put; + } + + intf->gem_obj = obj; + + return 0; + +out_put: + i915_gem_object_put(obj); + return err; +} + +static void gsc_ext_om_destroy(struct intel_gsc_intf *intf) +{ + struct drm_i915_gem_object *obj = fetch_and_zero(&intf->gem_obj); + + if (!obj) + return; + + if (i915_gem_object_has_pinned_pages(obj)) + i915_gem_object_unpin_pages(obj); + + i915_gem_object_put(obj); +} + struct gsc_def { const char *name; unsigned long bar; size_t bar_size; bool use_polling; bool slow_firmware; + size_t lmem_size; }; /* gsc resources and definitions (HECI1 and HECI2) */ @@ -74,6 +119,7 @@ static const struct gsc_def gsc_def_dg2[] = { .name = "mei-gsc", .bar = DG2_GSC_HECI1_BASE, .bar_size = GSC_BAR_LENGTH, + .lmem_size = SZ_4M, }, { .name = "mei-gscfi", @@ -90,26 +136,32 @@ static void gsc_release_dev(struct device *dev) kfree(adev); } -static void gsc_destroy_one(struct intel_gsc_intf *intf) +static void gsc_destroy_one(struct drm_i915_private *i915, + struct intel_gsc *gsc, unsigned int intf_id) { + struct intel_gsc_intf *intf = &gsc->intf[intf_id]; + if (intf->adev) { auxiliary_device_delete(&intf->adev->aux_dev); auxiliary_device_uninit(&intf->adev->aux_dev); intf->adev = NULL; } + if (intf->irq >= 0) irq_free_desc(intf->irq); intf->irq = -1; + + gsc_ext_om_destroy(intf); } -static void gsc_init_one(struct drm_i915_private *i915, - struct intel_gsc_intf *intf, +static void gsc_init_one(struct drm_i915_private *i915, struct intel_gsc *gsc, unsigned int intf_id) { struct pci_dev *pdev = to_pci_dev(i915->drm.dev); struct mei_aux_device *adev; struct auxiliary_device *aux_dev; const struct gsc_def *def; + struct intel_gsc_intf *intf = &gsc->intf[intf_id]; int ret; intf->irq = -1; @@ -141,7 +193,7 @@ static void gsc_init_one(struct drm_i915_private *i915, intf->irq = irq_alloc_desc(0); if (intf->irq < 0) { drm_err(&i915->drm, "gsc irq error %d\n", intf->irq); - return; + goto fail; } ret = gsc_irq_init(intf->irq); @@ -155,6 +207,19 @@ static void gsc_init_one(struct drm_i915_private *i915, if (!adev) goto fail; + if (def->lmem_size) { + drm_dbg(&i915->drm, "setting up GSC lmem\n"); + + if (gsc_ext_om_alloc(gsc, intf, def->lmem_size)) { + drm_err(&i915->drm, "setting up gsc extended operational memory failed\n"); + kfree(adev); + goto fail; + } + + adev->ext_op_mem.start = i915_gem_object_get_dma_address(intf->gem_obj, 0); + adev->ext_op_mem.end = adev->ext_op_mem.start + def->lmem_size; + } + adev->irq = intf->irq; adev->bar.parent = &pdev->resource[0]; adev->bar.start = def->bar + pdev->resource[0].start; @@ -188,7 +253,7 @@ static void gsc_init_one(struct drm_i915_private *i915, return; fail: - gsc_destroy_one(intf); + gsc_destroy_one(i915, gsc, intf->id); } static void gsc_irq_handler(struct intel_gt *gt, unsigned int intf_id) @@ -229,7 +294,7 @@ void intel_gsc_init(struct intel_gsc *gsc, struct drm_i915_private *i915) return; for (i = 0; i < INTEL_GSC_NUM_INTERFACES; i++) - gsc_init_one(i915, &gsc->intf[i], i); + gsc_init_one(i915, gsc, i); } void intel_gsc_fini(struct intel_gsc *gsc) @@ -241,5 +306,5 @@ void intel_gsc_fini(struct intel_gsc *gsc) return; for (i = 0; i < INTEL_GSC_NUM_INTERFACES; i++) - gsc_destroy_one(&gsc->intf[i]); + gsc_destroy_one(gt->i915, gsc, i); } diff --git a/drivers/gpu/drm/i915/gt/intel_gsc.h b/drivers/gpu/drm/i915/gt/intel_gsc.h index 68582f912b21..fcac1775e9c3 100644 --- a/drivers/gpu/drm/i915/gt/intel_gsc.h +++ b/drivers/gpu/drm/i915/gt/intel_gsc.h @@ -20,11 +20,14 @@ struct mei_aux_device; /** * struct intel_gsc - graphics security controller + * + * @gem_obj: scratch memory GSC operations * @intf : gsc interface */ struct intel_gsc { struct intel_gsc_intf { struct mei_aux_device *adev; + struct drm_i915_gem_object *gem_obj; int irq; unsigned int id; } intf[INTEL_GSC_NUM_INTERFACES];