From patchwork Wed Jun 29 11:29:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Usyskin X-Patchwork-Id: 12899835 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 6086ECCA47C for ; Wed, 29 Jun 2022 11:30:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D939311BF7D; Wed, 29 Jun 2022 11:30:15 +0000 (UTC) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3B41011BEEC for ; Wed, 29 Jun 2022 11:30:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1656502214; x=1688038214; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=CJZp0Ai058gciwAgk4vcNvOCE9MCURSm+pmkb2cRzrE=; b=ASUjwbMlvlHCSZzxVY69zKLomXIw4GI7Rl260/rjSzq2wscgMnTde9t3 RFq008TPjCWFhueBoSIYsERm1o2rCD5ohsgitDhput/ReddR4PQEWn+Bn dj8OJVwrIibREfuYYLJWV/37HjZhyPtTRgwiWJRY+bMaMOj9Q0pKvZmDY XoWFmzqBGyksss//pFMfqeQLrRILethPmSU9VoSN83kGix9ecOv6QkW0G +Oi5qlBY3MyK3Kb3DDmij0co3KhUeMBOwYjbnBXvVKYgGRSf8fjHjB2Uu kiF9+yyJPgX2aeFtpszBC1tEDxZ1KaY+UOHEWo+kcFAN62TRPSqEz0iu4 g==; X-IronPort-AV: E=McAfee;i="6400,9594,10392"; a="368319380" X-IronPort-AV: E=Sophos;i="5.92,231,1650956400"; d="scan'208";a="368319380" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jun 2022 04:30:14 -0700 X-IronPort-AV: E=Sophos;i="5.92,231,1650956400"; d="scan'208";a="647353459" Received: from sannilnx.jer.intel.com ([10.12.26.157]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jun 2022 04:30:10 -0700 From: Alexander Usyskin To: Greg Kroah-Hartman , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Tvrtko Ursulin Date: Wed, 29 Jun 2022 14:29:13 +0300 Message-Id: <20220629112913.1210933-15-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220629112913.1210933-1-alexander.usyskin@intel.com> References: <20220629112913.1210933-1-alexander.usyskin@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v4 14/14] 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: Alan Previn , intel-gfx@lists.freedesktop.org, Alexander Usyskin , linux-kernel@vger.kernel.org, Tomas Winkler , Vitaly Lubart 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. Signed-off-by: Tomas Winkler Signed-off-by: Daniele Ceraolo Spurio Cc: Alan Previn --- drivers/gpu/drm/i915/gt/intel_gsc.c | 92 ++++++++++++++++++++++++++--- drivers/gpu/drm/i915/gt/intel_gsc.h | 3 + 2 files changed, 88 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_gsc.c b/drivers/gpu/drm/i915/gt/intel_gsc.c index bfc307e49bf9..4d87519d5773 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 +37,68 @@ 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; + void *vaddr; + int err; + + obj = i915_gem_object_create_lmem(gt->i915, size, I915_BO_ALLOC_CONTIGUOUS); + 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; + } + + vaddr = i915_gem_object_pin_map_unlocked(obj, i915_coherent_map_type(gt->i915, obj, true)); + if (IS_ERR(vaddr)) { + err = PTR_ERR(vaddr); + drm_err(>->i915->drm, "Failed to map gsc memory\n"); + goto out_unpin; + } + + memset(vaddr, 0, obj->base.size); + + i915_gem_object_unpin_map(obj); + + intf->gem_obj = obj; + + return 0; + +out_unpin: + i915_gem_object_unpin_pages(obj); +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_fw; + size_t lmem_size; }; /* gsc resources and definitions (HECI1 and HECI2) */ @@ -74,6 +131,7 @@ 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 +148,33 @@ 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, - unsigned int intf_id) + 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 +206,7 @@ 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 +220,19 @@ static void gsc_init_one(struct drm_i915_private *i915, if (!adev) goto fail; + if (def->lmem_size) { + dev_dbg(&pdev->dev, "setting up GSC lmem\n"); + + if (gsc_ext_om_alloc(gsc, intf, def->lmem_size)) { + dev_err(&pdev->dev, "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 +266,7 @@ 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 +307,7 @@ 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 +319,5 @@ 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];