From patchwork Fri Jun 24 20:32:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Kevin Brace X-Patchwork-Id: 12895059 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 C5D7FC43334 for ; Fri, 24 Jun 2022 20:33:37 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D253510F42E; Fri, 24 Jun 2022 20:33:36 +0000 (UTC) Received: from mout.gmx.net (mout.gmx.net [212.227.15.18]) by gabe.freedesktop.org (Postfix) with ESMTPS id E48B110F3AF for ; Fri, 24 Jun 2022 20:33:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1656102810; bh=O8DrUxlHJZfVwOoWZZ8kiXA2S3OU18Enf1iV67R+JEs=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=euAi5PgB+GjJIWnjyicWncRRyeHIIyujJYbMCqPj+qJ5MfMoVJYSmLB/tXYBI554h XrhXtW8EZOeTLRR9w7LNIVptzsnNxGQkCLFmOA/ArQAZeClu5QHuZHgpsPKV1wVh0T TQViXpB2HutHHW6mHUkgdmW0Lvo7HdhfYkwSQIHc= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from localhost.localdomain ([174.250.50.2]) by mail.gmx.net (mrgmx004 [212.227.17.184]) with ESMTPSA (Nemesis) id 1MirjS-1nQFuN346e-00eqLi; Fri, 24 Jun 2022 22:33:29 +0200 From: Kevin Brace To: dri-devel@lists.freedesktop.org Subject: [PATCH 23/28] drm/via: Add via_ttm.c Date: Fri, 24 Jun 2022 15:32:54 -0500 Message-Id: <20220624203259.4051-4-kevinbrace@gmx.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220624203259.4051-1-kevinbrace@gmx.com> References: <20220624203259.4051-1-kevinbrace@gmx.com> MIME-Version: 1.0 X-Provags-ID: V03:K1:8p/yCD51uK2r751kPrgoYIMsOxOV3mO7j9IUIxsV9wN8h2Jc061 ZBSw0A1lrw9KYP5cZjo3OX1/JjjL2+F6TavvzT7bylUi2K3LDcNH+NQHFd4gtPQYKwuoiKk Pzo2wSAU6PWPT7eKC216r4cCckZQFby3MLwkb4nf24ZFKv18Q00hE3xIUiYxSJYKyfOm4SC NkmdvkALnc7sXM6bf0DyQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:69LHoc6iciM=:38iPHu3czYRRSXI2X9ITtw 7rAmO4AkeDlsPsiwqo3Tc8/TMsB4JpGENKHHwTWbi1Oy4zDTGxkHECbo0RwyodLgJ0ob383JW iRBv4N5kmjuJHe3HlNV5DGfeOY+gbwaWIi7e/n1x4npecRG+uuyFWxQXHbnStirCw+P7bcFMd 2BaMtYIsZ5GwOtM4vBIuXTSAYZPwSjuBvi4hpUcHc9kzgk+nYCfkkSW5ZsevwgSvZT1eqScZA hVCnbQWxtoiLeWOrO3xOzvQzWMO1JJOJ4D+8cdhMMoR2+YqWXem2AiAjT3K0K1TqVuvD530AU 0kNqcwuaHxe6G3lqVgH+3lFFFtZVmTWgh+UfnXt6PElIIYpephOXhU0B9Vt5QJsQGjZhBC4P3 AOwqME5iw5XpYgvTR2voU/eAZvvG+hQu5P354L+J2WL+tEbLN0UkgOze857yk5McSsGz6sBPW crnIRvZiI4fOq8pmuxawvrYXW/Wfe+C5fa4J2X5FKDZAd8t9LjogFJiAbN+7LCYOdBIq3CwVk 8+rNUsq0i8iK/gfAM1TX7fmk1F9QLlLYCHtnJlOYUCAMeWf+JlSp79Icdcu219BVl+yxpLbRC 0LcsUGSDtwKvSzqmfsgcHcNmj1nmk77Z8mZccKwA3d2vBIyugmXLWb/YCe81wstEhcM/u64Y5 XoReh48TjgZXwx25IVjyDrB5ojmKuLVYT8QfHkScVQZalsja2JJolu4Pw8g0TIf6rzuLK1qkD dWzhD+FiiMooe9SQGF5jzp9z0K2Dx64wycENo4K7+pLZXuVHC3rcMlw4CYSV1pbt9moJ1cd0I veQjNoagtVoSctkcPGdZoOdUT70Zen2cGS8PJoc55AqZAk846H6fH1p4spA+quj64zJgidJgG UbTVclIJZgM1oegsQ84KCV5x/hgUiz0yrVrcF1G/w5nnH1yyBfO4jSyzMRUAvVHshuPKxLiyb ubsGCyxxPER/f2dBbSNFAl+A7W6/1DkiJgnl+Q2Fs0lAsJXmA+s/kiK3TZQs/C7dy3kVPLW7S Ua6G0Vm95ShQfdwDX++6/mICvHuKLwHUYV8m+uqZaISf7Sq04Kv/sZF02AKFvqB5C+Li4VIJQ 6lvcS9hNguIKxhsWJdg5UbFjHc+ddosioq18rhPrT07nHCyTkzxjH+98Q== 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_ttm.c | 168 ++++++++++++++++++++++++++++++++++ 1 file changed, 168 insertions(+) create mode 100644 drivers/gpu/drm/via/via_ttm.c -- 2.35.1 diff --git a/drivers/gpu/drm/via/via_ttm.c b/drivers/gpu/drm/via/via_ttm.c new file mode 100644 index 000000000000..8676623ee074 --- /dev/null +++ b/drivers/gpu/drm/via/via_ttm.c @@ -0,0 +1,168 @@ +/* + * 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_ttm.c + * + * TTM code as part of the TTM memory allocator. + * Currently a basic implementation with no DMA support. + * + */ + +#include + +#include +#include + +#include "via_drv.h" + + +static void via_bo_move_notify(struct ttm_buffer_object *bo, bool evict, + struct ttm_resource *new_mem) +{ + DRM_DEBUG_KMS("Entered %s.\n", __func__); + + DRM_DEBUG_KMS("Exiting %s.\n", __func__); + return; +} + +static struct ttm_tt *via_ttm_tt_create(struct ttm_buffer_object *bo, + uint32_t page_flags) +{ + struct ttm_tt *tt; + int ret; + + tt = kzalloc(sizeof(*tt), GFP_KERNEL); + if (!tt) + return NULL; + + ret = ttm_tt_init(tt, bo, page_flags, ttm_cached, 0); + if (ret < 0) + goto err_ttm_tt_init; + + return tt; + +err_ttm_tt_init: + kfree(tt); + return NULL; +} + +static void via_ttm_tt_destroy(struct ttm_device *bdev, struct ttm_tt *tt) +{ + ttm_tt_fini(tt); + kfree(tt); +} + +static void via_bo_evict_flags(struct ttm_buffer_object *bo, + struct ttm_placement *placement) +{ + struct via_bo *driver_bo = to_ttm_bo(bo); + + DRM_DEBUG_KMS("Entered %s.\n", __func__); + + if (bo->destroy == &via_ttm_bo_destroy) { + goto exit; + } + + switch (bo->resource->mem_type) { + case TTM_PL_VRAM: + via_ttm_domain_to_placement(driver_bo, TTM_PL_VRAM); + break; + default: + via_ttm_domain_to_placement(driver_bo, TTM_PL_SYSTEM); + break; + } + + *placement = driver_bo->placement; +exit: + DRM_DEBUG_KMS("Exiting %s.\n", __func__); +} + +static int via_bo_move(struct ttm_buffer_object *bo, bool evict, + struct ttm_operation_ctx *ctx, + struct ttm_resource *new_mem, + struct ttm_place *hop) +{ + int ret; + + DRM_DEBUG_KMS("Entered %s.\n", __func__); + + via_bo_move_notify(bo, evict, new_mem); + ret = ttm_bo_move_memcpy(bo, ctx, new_mem); + if (ret) { + swap(*new_mem, *bo->resource); + via_bo_move_notify(bo, false, new_mem); + swap(*new_mem, *bo->resource); + } + + DRM_DEBUG_KMS("Exiting %s.\n", __func__); + return ret; +} + +static void via_bo_delete_mem_notify(struct ttm_buffer_object *bo) +{ + DRM_DEBUG_KMS("Entered %s.\n", __func__); + + via_bo_move_notify(bo, false, NULL); + + DRM_DEBUG_KMS("Exiting %s.\n", __func__); + return; +} + +static int via_bo_io_mem_reserve(struct ttm_device *bdev, + struct ttm_resource *mem) +{ + struct via_drm_priv *dev_priv = container_of(bdev, + struct via_drm_priv, bdev); + int ret = 0; + + DRM_DEBUG_KMS("Entered %s.\n", __func__); + + switch (mem->mem_type) { + case TTM_PL_SYSTEM: + break; + case TTM_PL_VRAM: + mem->bus.offset = dev_priv->vram_start + + (mem->start << PAGE_SHIFT); + mem->bus.is_iomem = true; + break; + default: + ret = -EINVAL; + break; + } + + DRM_DEBUG_KMS("Exiting %s.\n", __func__); + return ret; +} + +struct ttm_device_funcs via_bo_driver = { + .ttm_tt_create = via_ttm_tt_create, + .ttm_tt_destroy = via_ttm_tt_destroy, + .eviction_valuable = ttm_bo_eviction_valuable, + .evict_flags = via_bo_evict_flags, + .move = via_bo_move, + .delete_mem_notify = via_bo_delete_mem_notify, + .io_mem_reserve = via_bo_io_mem_reserve, +};