From patchwork Tue Jun 28 21:52:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Kevin Brace X-Patchwork-Id: 12898991 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 01CA5C433EF for ; Tue, 28 Jun 2022 21:54:47 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 58872112A1D; Tue, 28 Jun 2022 21:54:46 +0000 (UTC) Received: from mout.gmx.net (mout.gmx.net [212.227.15.19]) by gabe.freedesktop.org (Postfix) with ESMTPS id 722AC1120F5 for ; Tue, 28 Jun 2022 21:54:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1656453281; bh=cTXTzsCe2FkTyUhfEq4PFZukFI41R7l0mhJjwNXqjZQ=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=c6A4F1r/wFISNqYo0PLx+xfijUjcugusFdV0MOdMCcGNxwY+u/9AqKBOvMe4ZBqYi grNME9t7O7JnKb5qWkY/HYD/7At1bbCQ9W88vYOij1GbK/M4hKSR5kRc6IAi44cAfC aVGdLgemx7O46LAAbtS5pjPheI2bANkUwzF+9dxQ= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from localhost.localdomain ([174.250.0.5]) by mail.gmx.net (mrgmx005 [212.227.17.184]) with ESMTPSA (Nemesis) id 1My32L-1niR1646n9-00zWL1; Tue, 28 Jun 2022 23:54:41 +0200 From: Kevin Brace To: dri-devel@lists.freedesktop.org Subject: [PATCH v2 19/32] drm/via: Add via_object.c Date: Tue, 28 Jun 2022 16:52:33 -0500 Message-Id: <20220628215246.19706-20-kevinbrace@gmx.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220628215246.19706-1-kevinbrace@gmx.com> References: <20220628215246.19706-1-kevinbrace@gmx.com> MIME-Version: 1.0 X-Provags-ID: V03:K1:PYOJkH+A9zBQfAbIaWMMUwAt+SC8TARSYHAAvwKPjvCBS1nvYJ+ QQC9P639bjaOu1GdjOY/a4y7TNntOTgY81cK/o2IzREFk6JSuIlhXE7yAUqG/NwDKZNSpnb NlZ+BM5hc7/l3xl/KK6YLfiNK4gFFjL5cNaMQEus9tMR25TTCrU6hvYr909CgSOAIv+dhpJ D6helYfT5zJYyiXngd/7A== X-UI-Out-Filterresults: notjunk:1;V03:K0:wpXu94YOloY=:9ldH46z5wjt4w/IYmQPqcK 7QvczXmrzpr8IiA0xdVofrBE/D/mJ644eIx3U2UZRUFLAtl+sJCP/7RNcHAQ6/FzAMfba1Qmq 84mRw7T2TCaMXNegLqgM+lC5+FvGgRccs4/VaiAViUh8rtcW+rTumMMKcGDTzQxbz4SDiHgd4 AdzNtwwNEWlX4W3SveCYoOP663kOrkIv5F0kkdAk1LnrsUnJWuJETICImN6DLi/D6nokfRnsa Z/Mozrv+Lz1BHPKVeS4lWgmUDNQK/eC091rrZKhoHpJJh4Nuh6xU0d9Ra/bgnhPglKXY0GWBV tQImfxnI4bsXaLSBI998Qxbp1ivbXNdKZHumhgeeQIrpLf0Yik/MRT6vBJU/AX1Iozlsqm+aI iuKbxr3oB9opIEHFSxQBvVhPLhFQDHsE3iryYGcMKAX4YaHzBoEMBL8YYKEp8qF7sDPtnQeD5 OV+RzTfkZdgqycGZ8PiR1FrH8UJ8N6kVwDncQulOdnytwPJCaqjT4JzIfqErE9sO8EM6teU79 1uKZ84e89vHC9KVHfVyqeBVEzoXMByWrBV3Ny2ggxCi++NSd0QdZ0b+UXSuuhZLaoIGSGe3aK NMQ1i6gJ6EZ/y/2SH6fjxplrhRQ9ckyAxp6L6R9inPppEhlB3IkSclSRgNvcBpaqRZPz2S6oy vr9Y26q7a/t/fOozdwmZNysYyh6oraQPZzTZDJcNhfmn0KF+fufWlowiIbvE/Ez1ongdr3q/K 26XnGRCujTKOpqulbmjQVbdt5JXxOVtUwAMOiRmgjR2Vc1asl+IGFnyGRHTYVkitWMByTEu3M LjyeoZ/oZS6nb7MD7o1D+pVE++qHH3/tIs+K8RNNSVTJXBNVknQUgG+EYF+WAQEZtDPkg9uW+ SkKc69vSpgezl/VG0A7K95prhqt+F4c6Gpdb3yTaJ+2ElL/eC3/5K44unTVOK3TZc3H55Kidc cjkmoV47sJC+xoDKci/0y+WPSRY1WOvZtwUldevh5R0klOuAQEQggLT0xhY0/mnA7MkM4cqSD 0lKV6vpZOzPKDrvXVONj47PRWZiisdM6Bfoi4A2KrWGupTb+E9/HtvY2nAgi9j/L1ECg40KV7 Ae8MXi9jvj5Upev32D/s1CfzQZt7fCRwg5xgY9U47SWGvvbyf62eJiKVA== X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Brace Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Kevin Brace Signed-off-by: Kevin Brace --- drivers/gpu/drm/via/via_object.c | 324 +++++++++++++++++++++++++++++++ 1 file changed, 324 insertions(+) create mode 100644 drivers/gpu/drm/via/via_object.c -- 2.35.1 diff --git a/drivers/gpu/drm/via/via_object.c b/drivers/gpu/drm/via/via_object.c new file mode 100644 index 000000000000..96fb2934d0de --- /dev/null +++ b/drivers/gpu/drm/via/via_object.c @@ -0,0 +1,324 @@ +/* + * Copyright © 2018-2019 Kevin Brace. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sub license, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE AUTHOR(S) OR COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * Author(s): + * Kevin Brace + */ +/* + * via_object.c + * + * Manages Buffer Objects (BO) via TTM. + * Part of the TTM memory allocator. + * + */ + +#include +#include +#include + +#include +#include +#include + +#include "via_drv.h" + + +static void via_gem_free(struct drm_gem_object *obj) +{ + struct ttm_buffer_object *ttm_bo; + + DRM_DEBUG_KMS("Entered %s.\n", __func__); + + ttm_bo = container_of(obj, struct ttm_buffer_object, base); + + ttm_bo_put(ttm_bo); + + DRM_DEBUG_KMS("Exiting %s.\n", __func__); +} + +static const struct vm_operations_struct via_ttm_bo_vm_ops = { + .fault = ttm_bo_vm_fault, + .open = ttm_bo_vm_open, + .close = ttm_bo_vm_close, + .access = ttm_bo_vm_access +}; + +static const struct drm_gem_object_funcs via_gem_object_funcs = { + .free = via_gem_free, + .vmap = drm_gem_ttm_vmap, + .vunmap = drm_gem_ttm_vunmap, + .mmap = drm_gem_ttm_mmap, + .vm_ops = &via_ttm_bo_vm_ops, +}; + +void via_ttm_domain_to_placement(struct via_bo *bo, + uint32_t ttm_domain) +{ + unsigned i = 0; + + DRM_DEBUG_KMS("Entered %s.\n", __func__); + + bo->placement.placement = bo->placements; + bo->placement.busy_placement = bo->placements; + + if (ttm_domain == TTM_PL_SYSTEM) { + bo->placements[i].fpfn = 0; + bo->placements[i].lpfn = 0; + bo->placements[i].mem_type = TTM_PL_SYSTEM; + bo->placements[i].flags = 0; + i++; + } + + if (ttm_domain == TTM_PL_TT) { + bo->placements[i].fpfn = 0; + bo->placements[i].lpfn = 0; + bo->placements[i].mem_type = TTM_PL_TT; + bo->placements[i].flags = 0; + i++; + } + + if (ttm_domain == TTM_PL_VRAM) { + bo->placements[i].fpfn = 0; + bo->placements[i].lpfn = 0; + bo->placements[i].mem_type = TTM_PL_VRAM; + bo->placements[i].flags = 0; + i++; + } + + bo->placement.num_placement = i; + bo->placement.num_busy_placement = i; + + DRM_DEBUG_KMS("Exiting %s.\n", __func__); +} + +void via_ttm_bo_destroy(struct ttm_buffer_object *tbo) +{ + struct via_bo *bo; + + DRM_DEBUG_KMS("Entered %s.\n", __func__); + + bo = to_ttm_bo(tbo); + + drm_gem_object_release(&tbo->base); + kfree(bo); + + DRM_DEBUG_KMS("Exiting %s.\n", __func__); +} + +int via_bo_pin(struct via_bo *bo, uint32_t ttm_domain) +{ + struct ttm_buffer_object *ttm_bo; + struct ttm_operation_ctx ctx = {false, false}; + int ret = 0; + + DRM_DEBUG_KMS("Entered %s.\n", __func__); + + ttm_bo = &bo->ttm_bo; + + if (ttm_bo->pin_count) { + goto pin; + } + + via_ttm_domain_to_placement(bo, ttm_domain); + ret = ttm_bo_validate(ttm_bo, &bo->placement, &ctx); + if (ret) { + goto exit; + } + +pin: + ttm_bo_pin(ttm_bo); +exit: + + DRM_DEBUG_KMS("Exiting %s.\n", __func__); + return ret; +} + +void via_bo_unpin(struct via_bo *bo) +{ + struct ttm_buffer_object *ttm_bo; + + DRM_DEBUG_KMS("Entered %s.\n", __func__); + + ttm_bo = &bo->ttm_bo; + + ttm_bo_unpin(ttm_bo); + + DRM_DEBUG_KMS("Exiting %s.\n", __func__); +} + +int via_bo_create(struct drm_device *dev, + struct ttm_device *bdev, + uint64_t size, + enum ttm_bo_type type, + uint32_t ttm_domain, + bool kmap, + struct via_bo **bo_ptr) +{ + struct ttm_buffer_object *ttm_bo; + struct via_drm_priv *dev_priv = to_via_drm_priv(dev); + struct via_bo *bo; + int ret; + + DRM_DEBUG_KMS("Entered %s.\n", __func__); + + bo = kzalloc(sizeof(*bo), GFP_KERNEL); + if (!bo) { + DRM_ERROR("Cannot allocate a TTM buffer object.\n"); + ret = -ENOMEM; + goto exit; + } + + ttm_bo = &bo->ttm_bo; + + /* + * It is an imperative to page align the requested buffer size + * prior to a memory allocation request, or various memory + * allocation related system instabilities may occur. + */ + size = ALIGN(size, PAGE_SIZE); + + ret = drm_gem_object_init(dev, &ttm_bo->base, size); + if (ret) { + DRM_ERROR("Cannot initialize a GEM object.\n"); + goto error; + } + + ttm_bo->base.funcs = &via_gem_object_funcs; + + via_ttm_domain_to_placement(bo, ttm_domain); + ret = ttm_bo_init(&dev_priv->bdev, ttm_bo, + size, type, &bo->placement, + PAGE_SIZE >> PAGE_SHIFT, false, + NULL, NULL, via_ttm_bo_destroy); + if (ret) { + DRM_ERROR("Cannot initialize a TTM object.\n"); + goto exit; + } + + if (kmap) { + ret = ttm_bo_reserve(ttm_bo, true, false, NULL); + if (ret) { + ttm_bo_put(ttm_bo); + goto exit; + } + + ret = via_bo_pin(bo, ttm_domain); + ttm_bo_unreserve(ttm_bo); + if (ret) { + ttm_bo_put(ttm_bo); + goto exit; + } + + ret = ttm_bo_kmap(ttm_bo, 0, ttm_bo->resource->num_pages, + &bo->kmap); + if (ret) { + ttm_bo_put(ttm_bo); + goto exit; + } + } + + *bo_ptr = bo; + goto exit; +error: + kfree(bo); +exit: + DRM_DEBUG_KMS("Exiting %s.\n", __func__); + return ret; +} + +void via_bo_destroy(struct via_bo *bo, bool kmap) +{ + struct ttm_buffer_object *ttm_bo; + int ret; + + DRM_DEBUG_KMS("Entered %s.\n", __func__); + + ttm_bo = &bo->ttm_bo; + + if (kmap) { + ttm_bo_kunmap(&bo->kmap); + + ret = ttm_bo_reserve(ttm_bo, true, false, NULL); + if (ret) { + goto exit; + } + + via_bo_unpin(bo); + ttm_bo_unreserve(ttm_bo); + if (ret) { + goto exit; + } + } + + ttm_bo_put(ttm_bo); +exit: + DRM_DEBUG_KMS("Exiting %s.\n", __func__); +} + +int via_mm_init(struct via_drm_priv *dev_priv) +{ + struct drm_device *dev = &dev_priv->dev; + int ret; + + DRM_DEBUG_KMS("Entered %s.\n", __func__); + + /* + * Initialize bdev ttm_bo_device struct. + */ + ret = ttm_device_init(&dev_priv->bdev, + &via_bo_driver, + dev->dev, + dev->anon_inode->i_mapping, + dev->vma_offset_manager, + false, + dev_priv->need_dma32); + if (ret) { + DRM_ERROR("Failed initializing buffer object driver.\n"); + goto exit; + } + + /* + * Initialize TTM range manager for VRAM management. + */ + ret = ttm_range_man_init(&dev_priv->bdev, TTM_PL_VRAM, + false, + dev_priv->vram_size >> PAGE_SHIFT); + if (ret) { + DRM_ERROR("Failed initializing TTM VRAM memory manager.\n"); + goto exit; + } + +exit: + DRM_DEBUG_KMS("Exiting %s.\n", __func__); + return ret; +} + +void via_mm_fini(struct via_drm_priv *dev_priv) +{ + DRM_DEBUG_KMS("Entered %s.\n", __func__); + + ttm_range_man_fini(&dev_priv->bdev, TTM_PL_VRAM); + + ttm_device_fini(&dev_priv->bdev); + + DRM_DEBUG_KMS("Exiting %s.\n", __func__); +}