From patchwork Tue Oct 7 17:11:26 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michel Thierry X-Patchwork-Id: 5047831 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id C0811C11AB for ; Tue, 7 Oct 2014 17:12:31 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DAA7F20225 for ; Tue, 7 Oct 2014 17:12:30 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 54A2E20109 for ; Tue, 7 Oct 2014 17:12:25 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A566E6E1B3; Tue, 7 Oct 2014 10:12:24 -0700 (PDT) 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 ESMTP id D47146E19B for ; Tue, 7 Oct 2014 10:12:22 -0700 (PDT) Received: from azsmga001.ch.intel.com ([10.2.17.19]) by orsmga102.jf.intel.com with ESMTP; 07 Oct 2014 10:05:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.04,671,1406617200"; d="scan'208";a="482578183" Received: from michelth-linux.isw.intel.com ([10.102.226.151]) by azsmga001.ch.intel.com with ESMTP; 07 Oct 2014 10:11:53 -0700 From: Michel Thierry To: intel-gfx@lists.freedesktop.org Date: Tue, 7 Oct 2014 18:11:26 +0100 Message-Id: <1412701894-28905-31-git-send-email-michel.thierry@intel.com> X-Mailer: git-send-email 2.0.3 In-Reply-To: <1412701894-28905-1-git-send-email-michel.thierry@intel.com> References: <1412701894-28905-1-git-send-email-michel.thierry@intel.com> Subject: [Intel-gfx] [RFC 30/38] drm/i915/bdw: pagedirs rework allocation X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Ben Widawsky Signed-off-by: Ben Widawsky Signed-off-by: Michel Thierry --- drivers/gpu/drm/i915/i915_gem_gtt.c | 43 ++++++++++++++++++++++++++----------- 1 file changed, 31 insertions(+), 12 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 8c3bb45..6f9c79b 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -537,8 +537,10 @@ static void gen8_teardown_va_range(struct i915_address_space *vm, uint64_t pd_start = start; gen8_for_each_pde(pt, pd, pd_start, pd_len, temp, pde) { free_pt_single(pt, vm->dev); + pd->page_tables[pde] = NULL; } free_pd_single(pd, vm->dev); + ppgtt->pdp.pagedirs[pdpe] = NULL; } } @@ -587,26 +589,40 @@ unwind_out: return -ENOMEM; } -static int gen8_ppgtt_allocate_page_directories(struct i915_hw_ppgtt *ppgtt, - const int max_pdp) +static int gen8_ppgtt_alloc_pagedirs(struct i915_pagedirpo *pdp, + uint64_t start, + uint64_t length) { - int i; + struct i915_hw_ppgtt *ppgtt = + container_of(pdp, struct i915_hw_ppgtt, pdp); + struct i915_pagedir *unused; + uint64_t temp; + uint32_t pdpe; - for (i = 0; i < max_pdp; i++) { - ppgtt->pdp.pagedirs[i] = alloc_pd_single(ppgtt->base.dev); - if (IS_ERR(ppgtt->pdp.pagedirs[i])) + /* FIXME: PPGTT container_of won't work for 64b */ + BUG_ON((start + length) > 0x800000000ULL); + + gen8_for_each_pdpe(unused, pdp, start, length, temp, pdpe) { + BUG_ON(unused); + pdp->pagedirs[pdpe] = alloc_pd_single(ppgtt->base.dev); + if (IS_ERR(ppgtt->pdp.pagedirs[pdpe])) goto unwind_out; + + ppgtt->num_pd_pages++; } - ppgtt->num_pd_pages = max_pdp; BUG_ON(ppgtt->num_pd_pages > GEN8_LEGACY_PDPES); return 0; unwind_out: - while (i--) - free_pd_single(ppgtt->pdp.pagedirs[i], + while (pdpe--) { + free_pd_single(ppgtt->pdp.pagedirs[pdpe], ppgtt->base.dev); + ppgtt->num_pd_pages--; + } + + WARN_ON(ppgtt->num_pd_pages); return -ENOMEM; } @@ -616,7 +632,8 @@ static int gen8_ppgtt_alloc(struct i915_hw_ppgtt *ppgtt, { int ret; - ret = gen8_ppgtt_allocate_page_directories(ppgtt, max_pdp); + ret = gen8_ppgtt_alloc_pagedirs(&ppgtt->pdp, ppgtt->base.start, + ppgtt->base.total); if (ret) return ret; @@ -653,6 +670,10 @@ static int gen8_ppgtt_init(struct i915_hw_ppgtt *ppgtt, uint64_t size) if (size % (1<<30)) DRM_INFO("Pages will be wasted unless GTT size (%llu) is divisible by 1GB\n", size); + ppgtt->base.start = 0; + ppgtt->base.total = size; + BUG_ON(ppgtt->base.total == 0); + /* 1. Do all our allocations for page directories and page tables. */ ret = gen8_ppgtt_alloc(ppgtt, max_pdp); if (ret) @@ -685,8 +706,6 @@ static int gen8_ppgtt_init(struct i915_hw_ppgtt *ppgtt, uint64_t size) ppgtt->base.clear_range = gen8_ppgtt_clear_range; ppgtt->base.insert_entries = gen8_ppgtt_insert_entries; ppgtt->base.cleanup = gen8_ppgtt_cleanup; - ppgtt->base.start = 0; - ppgtt->base.total = ppgtt->num_pd_entries * GEN8_PTES_PER_PT * PAGE_SIZE; DRM_DEBUG_DRIVER("Allocated %d pages for page directories (%d wasted)\n", ppgtt->num_pd_pages, ppgtt->num_pd_pages - max_pdp);