From patchwork Fri Oct 7 13:17:50 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Micha=C5=82_Winiarski?= X-Patchwork-Id: 9366087 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id E81B86075E for ; Fri, 7 Oct 2016 13:18:09 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D8776295EA for ; Fri, 7 Oct 2016 13:18:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CCD9A295F4; Fri, 7 Oct 2016 13:18:09 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id ACB7D295EA for ; Fri, 7 Oct 2016 13:18:08 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 71E156EB89; Fri, 7 Oct 2016 13:18:06 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTPS id 26F856EB89 for ; Fri, 7 Oct 2016 13:18:05 +0000 (UTC) Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga102.jf.intel.com with ESMTP; 07 Oct 2016 06:18:04 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,308,1473145200"; d="scan'208";a="17684451" Received: from irsmsx102.ger.corp.intel.com ([163.33.3.155]) by orsmga004.jf.intel.com with ESMTP; 07 Oct 2016 06:18:03 -0700 Received: from mwiniars-desk1.ger.corp.intel.com (172.28.171.143) by IRSMSX102.ger.corp.intel.com (163.33.3.155) with Microsoft SMTP Server id 14.3.248.2; Fri, 7 Oct 2016 14:18:02 +0100 From: =?UTF-8?q?Micha=C5=82=20Winiarski?= To: Date: Fri, 7 Oct 2016 15:17:50 +0200 Message-ID: <1475846272-16963-1-git-send-email-michal.winiarski@intel.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [172.28.171.143] Subject: [Intel-gfx] [PATCH v2 1/3] drm/i915: Remove unused "valid" parameter from pte_encode X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP We never used any invalid ptes, those were put in place for a possibility of doing gpu faults. However our batchbuffers are not restricted in length, so everything needs to be pointing to something and thus out-of-bounds is pointing to scratch. Remove the valid flag as it is always true. v2: Expand commit msg, patch reorder (Mika) Cc: Chris Wilson Cc: Michel Thierry Reviewed-by: Joonas Lahtinen Reviewed-by: Mika Kuoppala Signed-off-by: Michał Winiarski --- drivers/gpu/drm/i915/i915_gem.c | 6 +- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 3 +- drivers/gpu/drm/i915/i915_gem_gtt.c | 98 ++++++++++++------------------ drivers/gpu/drm/i915/i915_gem_gtt.h | 5 +- 4 files changed, 45 insertions(+), 67 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index a89a889..60222b5 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -919,8 +919,7 @@ out_unpin: if (node.allocated) { wmb(); ggtt->base.clear_range(&ggtt->base, - node.start, node.size, - true); + node.start, node.size); i915_gem_object_unpin_pages(obj); remove_mappable_node(&node); } else { @@ -1228,8 +1227,7 @@ out_unpin: if (node.allocated) { wmb(); ggtt->base.clear_range(&ggtt->base, - node.start, node.size, - true); + node.start, node.size); i915_gem_object_unpin_pages(obj); remove_mappable_node(&node); } else { diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index 72c7c18..6835074 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -370,8 +370,7 @@ static void reloc_cache_fini(struct reloc_cache *cache) ggtt->base.clear_range(&ggtt->base, cache->node.start, - cache->node.size, - true); + cache->node.size); drm_mm_remove_node(&cache->node); } else { i915_vma_unpin((struct i915_vma *)cache->node.mm); diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 0bb4232..08e2f35 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -191,15 +191,13 @@ static void ppgtt_unbind_vma(struct i915_vma *vma) { vma->vm->clear_range(vma->vm, vma->node.start, - vma->size, - true); + vma->size); } static gen8_pte_t gen8_pte_encode(dma_addr_t addr, - enum i915_cache_level level, - bool valid) + enum i915_cache_level level) { - gen8_pte_t pte = valid ? _PAGE_PRESENT | _PAGE_RW : 0; + gen8_pte_t pte = _PAGE_PRESENT | _PAGE_RW; pte |= addr; switch (level) { @@ -234,9 +232,9 @@ static gen8_pde_t gen8_pde_encode(const dma_addr_t addr, static gen6_pte_t snb_pte_encode(dma_addr_t addr, enum i915_cache_level level, - bool valid, u32 unused) + u32 unused) { - gen6_pte_t pte = valid ? GEN6_PTE_VALID : 0; + gen6_pte_t pte = GEN6_PTE_VALID; pte |= GEN6_PTE_ADDR_ENCODE(addr); switch (level) { @@ -256,9 +254,9 @@ static gen6_pte_t snb_pte_encode(dma_addr_t addr, static gen6_pte_t ivb_pte_encode(dma_addr_t addr, enum i915_cache_level level, - bool valid, u32 unused) + u32 unused) { - gen6_pte_t pte = valid ? GEN6_PTE_VALID : 0; + gen6_pte_t pte = GEN6_PTE_VALID; pte |= GEN6_PTE_ADDR_ENCODE(addr); switch (level) { @@ -280,9 +278,9 @@ static gen6_pte_t ivb_pte_encode(dma_addr_t addr, static gen6_pte_t byt_pte_encode(dma_addr_t addr, enum i915_cache_level level, - bool valid, u32 flags) + u32 flags) { - gen6_pte_t pte = valid ? GEN6_PTE_VALID : 0; + gen6_pte_t pte = GEN6_PTE_VALID; pte |= GEN6_PTE_ADDR_ENCODE(addr); if (!(flags & PTE_READ_ONLY)) @@ -296,9 +294,9 @@ static gen6_pte_t byt_pte_encode(dma_addr_t addr, static gen6_pte_t hsw_pte_encode(dma_addr_t addr, enum i915_cache_level level, - bool valid, u32 unused) + u32 unused) { - gen6_pte_t pte = valid ? GEN6_PTE_VALID : 0; + gen6_pte_t pte = GEN6_PTE_VALID; pte |= HSW_PTE_ADDR_ENCODE(addr); if (level != I915_CACHE_NONE) @@ -309,9 +307,9 @@ static gen6_pte_t hsw_pte_encode(dma_addr_t addr, static gen6_pte_t iris_pte_encode(dma_addr_t addr, enum i915_cache_level level, - bool valid, u32 unused) + u32 unused) { - gen6_pte_t pte = valid ? GEN6_PTE_VALID : 0; + gen6_pte_t pte = GEN6_PTE_VALID; pte |= HSW_PTE_ADDR_ENCODE(addr); switch (level) { @@ -472,7 +470,7 @@ static void gen8_initialize_pt(struct i915_address_space *vm, gen8_pte_t scratch_pte; scratch_pte = gen8_pte_encode(vm->scratch_page.daddr, - I915_CACHE_LLC, true); + I915_CACHE_LLC); fill_px(vm->dev, pt, scratch_pte); } @@ -485,7 +483,7 @@ static void gen6_initialize_pt(struct i915_address_space *vm, WARN_ON(vm->scratch_page.daddr == 0); scratch_pte = vm->pte_encode(vm->scratch_page.daddr, - I915_CACHE_LLC, true, 0); + I915_CACHE_LLC, 0); fill32_px(vm->dev, pt, scratch_pte); } @@ -763,13 +761,11 @@ static void gen8_ppgtt_clear_pte_range(struct i915_address_space *vm, } static void gen8_ppgtt_clear_range(struct i915_address_space *vm, - uint64_t start, - uint64_t length, - bool use_scratch) + uint64_t start, uint64_t length) { struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vm); gen8_pte_t scratch_pte = gen8_pte_encode(vm->scratch_page.daddr, - I915_CACHE_LLC, use_scratch); + I915_CACHE_LLC); if (!USES_FULL_48BIT_PPGTT(vm->dev)) { gen8_ppgtt_clear_pte_range(vm, &ppgtt->pdp, start, length, @@ -809,7 +805,7 @@ gen8_ppgtt_insert_pte_entries(struct i915_address_space *vm, pt_vaddr[pte] = gen8_pte_encode(sg_page_iter_dma_address(sg_iter), - cache_level, true); + cache_level); if (++pte == GEN8_PTES) { kunmap_px(ppgtt, pt_vaddr); pt_vaddr = NULL; @@ -1452,7 +1448,7 @@ static void gen8_dump_ppgtt(struct i915_hw_ppgtt *ppgtt, struct seq_file *m) uint64_t start = ppgtt->base.start; uint64_t length = ppgtt->base.total; gen8_pte_t scratch_pte = gen8_pte_encode(vm->scratch_page.daddr, - I915_CACHE_LLC, true); + I915_CACHE_LLC); if (!USES_FULL_48BIT_PPGTT(vm->dev)) { gen8_dump_pdp(&ppgtt->pdp, start, length, scratch_pte, m); @@ -1569,7 +1565,7 @@ static void gen6_dump_ppgtt(struct i915_hw_ppgtt *ppgtt, struct seq_file *m) uint32_t start = ppgtt->base.start, length = ppgtt->base.total; scratch_pte = vm->pte_encode(vm->scratch_page.daddr, - I915_CACHE_LLC, true, 0); + I915_CACHE_LLC, 0); gen6_for_each_pde(unused, &ppgtt->pd, start, length, pde) { u32 expected; @@ -1782,8 +1778,7 @@ static void gen6_ppgtt_enable(struct drm_device *dev) /* PPGTT support for Sandybdrige/Gen6 and later */ static void gen6_ppgtt_clear_range(struct i915_address_space *vm, uint64_t start, - uint64_t length, - bool use_scratch) + uint64_t length) { struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vm); gen6_pte_t *pt_vaddr, scratch_pte; @@ -1794,7 +1789,7 @@ static void gen6_ppgtt_clear_range(struct i915_address_space *vm, unsigned last_pte, i; scratch_pte = vm->pte_encode(vm->scratch_page.daddr, - I915_CACHE_LLC, true, 0); + I915_CACHE_LLC, 0); while (num_entries) { last_pte = first_pte + num_entries; @@ -1832,7 +1827,7 @@ static void gen6_ppgtt_insert_entries(struct i915_address_space *vm, pt_vaddr = kmap_px(ppgtt->pd.page_table[act_pt]); pt_vaddr[act_pte] = - vm->pte_encode(addr, cache_level, true, flags); + vm->pte_encode(addr, cache_level, flags); if (++act_pte == GEN6_PTES) { kunmap_px(ppgtt, pt_vaddr); @@ -2286,8 +2281,7 @@ void i915_gem_suspend_gtt_mappings(struct drm_device *dev) i915_check_and_clear_faults(dev_priv); - ggtt->base.clear_range(&ggtt->base, ggtt->base.start, ggtt->base.total, - true); + ggtt->base.clear_range(&ggtt->base, ggtt->base.start, ggtt->base.total); i915_ggtt_flush(dev_priv); } @@ -2321,7 +2315,7 @@ static void gen8_ggtt_insert_page(struct i915_address_space *vm, rpm_atomic_seq = assert_rpm_atomic_begin(dev_priv); - gen8_set_pte(pte, gen8_pte_encode(addr, level, true)); + gen8_set_pte(pte, gen8_pte_encode(addr, level)); I915_WRITE(GFX_FLSH_CNTL_GEN6, GFX_FLSH_CNTL_EN); POSTING_READ(GFX_FLSH_CNTL_GEN6); @@ -2348,7 +2342,7 @@ static void gen8_ggtt_insert_entries(struct i915_address_space *vm, gtt_entries = (gen8_pte_t __iomem *)ggtt->gsm + (start >> PAGE_SHIFT); for_each_sgt_dma(addr, sgt_iter, st) { - gtt_entry = gen8_pte_encode(addr, level, true); + gtt_entry = gen8_pte_encode(addr, level); gen8_set_pte(>t_entries[i++], gtt_entry); } @@ -2412,7 +2406,7 @@ static void gen6_ggtt_insert_page(struct i915_address_space *vm, rpm_atomic_seq = assert_rpm_atomic_begin(dev_priv); - iowrite32(vm->pte_encode(addr, level, true, flags), pte); + iowrite32(vm->pte_encode(addr, level, flags), pte); I915_WRITE(GFX_FLSH_CNTL_GEN6, GFX_FLSH_CNTL_EN); POSTING_READ(GFX_FLSH_CNTL_GEN6); @@ -2445,7 +2439,7 @@ static void gen6_ggtt_insert_entries(struct i915_address_space *vm, gtt_entries = (gen6_pte_t __iomem *)ggtt->gsm + (start >> PAGE_SHIFT); for_each_sgt_dma(addr, sgt_iter, st) { - gtt_entry = vm->pte_encode(addr, level, true, flags); + gtt_entry = vm->pte_encode(addr, level, flags); iowrite32(gtt_entry, >t_entries[i++]); } @@ -2469,16 +2463,12 @@ static void gen6_ggtt_insert_entries(struct i915_address_space *vm, } static void nop_clear_range(struct i915_address_space *vm, - uint64_t start, - uint64_t length, - bool use_scratch) + uint64_t start, uint64_t length) { } static void gen8_ggtt_clear_range(struct i915_address_space *vm, - uint64_t start, - uint64_t length, - bool use_scratch) + uint64_t start, uint64_t length) { struct drm_i915_private *dev_priv = to_i915(vm->dev); struct i915_ggtt *ggtt = i915_vm_to_ggtt(vm); @@ -2498,8 +2488,7 @@ static void gen8_ggtt_clear_range(struct i915_address_space *vm, num_entries = max_entries; scratch_pte = gen8_pte_encode(vm->scratch_page.daddr, - I915_CACHE_LLC, - use_scratch); + I915_CACHE_LLC); for (i = 0; i < num_entries; i++) gen8_set_pte(>t_base[i], scratch_pte); readl(gtt_base); @@ -2509,8 +2498,7 @@ static void gen8_ggtt_clear_range(struct i915_address_space *vm, static void gen6_ggtt_clear_range(struct i915_address_space *vm, uint64_t start, - uint64_t length, - bool use_scratch) + uint64_t length) { struct drm_i915_private *dev_priv = to_i915(vm->dev); struct i915_ggtt *ggtt = i915_vm_to_ggtt(vm); @@ -2530,7 +2518,7 @@ static void gen6_ggtt_clear_range(struct i915_address_space *vm, num_entries = max_entries; scratch_pte = vm->pte_encode(vm->scratch_page.daddr, - I915_CACHE_LLC, use_scratch, 0); + I915_CACHE_LLC, 0); for (i = 0; i < num_entries; i++) iowrite32(scratch_pte, >t_base[i]); @@ -2577,8 +2565,7 @@ static void i915_ggtt_insert_entries(struct i915_address_space *vm, static void i915_ggtt_clear_range(struct i915_address_space *vm, uint64_t start, - uint64_t length, - bool unused) + uint64_t length) { struct drm_i915_private *dev_priv = to_i915(vm->dev); unsigned first_entry = start >> PAGE_SHIFT; @@ -2662,13 +2649,11 @@ static void ggtt_unbind_vma(struct i915_vma *vma) if (vma->flags & I915_VMA_GLOBAL_BIND) vma->vm->clear_range(vma->vm, - vma->node.start, size, - true); + vma->node.start, size); if (vma->flags & I915_VMA_LOCAL_BIND && appgtt) appgtt->base.clear_range(&appgtt->base, - vma->node.start, size, - true); + vma->node.start, size); } void i915_gem_gtt_finish_object(struct drm_i915_gem_object *obj) @@ -2729,13 +2714,12 @@ int i915_gem_init_ggtt(struct drm_i915_private *dev_priv) DRM_DEBUG_KMS("clearing unused GTT space: [%lx, %lx]\n", hole_start, hole_end); ggtt->base.clear_range(&ggtt->base, hole_start, - hole_end - hole_start, true); + hole_end - hole_start); } /* And finally clear the reserved guard page */ ggtt->base.clear_range(&ggtt->base, - ggtt->base.total - PAGE_SIZE, PAGE_SIZE, - true); + ggtt->base.total - PAGE_SIZE, PAGE_SIZE); if (USES_PPGTT(dev_priv) && !USES_FULL_PPGTT(dev_priv)) { struct i915_hw_ppgtt *ppgtt; @@ -2761,8 +2745,7 @@ int i915_gem_init_ggtt(struct drm_i915_private *dev_priv) ppgtt->base.clear_range(&ppgtt->base, ppgtt->base.start, - ppgtt->base.total, - true); + ppgtt->base.total); dev_priv->mm.aliasing_ppgtt = ppgtt; WARN_ON(ggtt->base.bind_vma != ggtt_bind_vma); @@ -3237,8 +3220,7 @@ void i915_gem_restore_gtt_mappings(struct drm_device *dev) i915_check_and_clear_faults(dev_priv); /* First fill our portion of the GTT with scratch pages */ - ggtt->base.clear_range(&ggtt->base, ggtt->base.start, ggtt->base.total, - true); + ggtt->base.clear_range(&ggtt->base, ggtt->base.start, ggtt->base.total); ggtt->base.closed = true; /* skip rewriting PTE on VMA unbind */ diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h index ec78be2..931d712 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.h +++ b/drivers/gpu/drm/i915/i915_gem_gtt.h @@ -395,7 +395,7 @@ struct i915_address_space { /* FIXME: Need a more generic return type */ gen6_pte_t (*pte_encode)(dma_addr_t addr, enum i915_cache_level level, - bool valid, u32 flags); /* Create a valid PTE */ + u32 flags); /* Create a valid PTE */ /* flags for pte_encode */ #define PTE_READ_ONLY (1<<0) int (*allocate_va_range)(struct i915_address_space *vm, @@ -403,8 +403,7 @@ struct i915_address_space { uint64_t length); void (*clear_range)(struct i915_address_space *vm, uint64_t start, - uint64_t length, - bool use_scratch); + uint64_t length); void (*insert_page)(struct i915_address_space *vm, dma_addr_t addr, uint64_t offset,