From patchwork Tue Jun 28 21:55:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Kevin Brace X-Patchwork-Id: 12898997 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 9C5FAC433EF for ; Tue, 28 Jun 2022 21:55:57 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id F10E5112D43; Tue, 28 Jun 2022 21:55:56 +0000 (UTC) Received: from mout.gmx.net (mout.gmx.net [212.227.15.18]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3BEFD112D48 for ; Tue, 28 Jun 2022 21:55:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1656453351; bh=O8DrUxlHJZfVwOoWZZ8kiXA2S3OU18Enf1iV67R+JEs=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=MtdZfMESuYPlBIE6YPcu1rvsheLqzZdGtKuXB7GPdZ/VGekBqib2XK+XuZkssK2Vz wdjtPBMRvr6TXkqWc2WcQbq6FIewph3DIFLTzTKOH/5RD+HT0BPZQPoeFgaTSQnPnF MdyIpBosl6tl8hfMsFautcJIXdXmd2FuX7NISil8= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from localhost.localdomain ([174.250.0.2]) by mail.gmx.net (mrgmx005 [212.227.17.184]) with ESMTPSA (Nemesis) id 1MOzT4-1oIJjO06Y8-00PMMC; Tue, 28 Jun 2022 23:55:51 +0200 From: Kevin Brace To: dri-devel@lists.freedesktop.org Subject: [PATCH v2 24/32] drm/via: Add via_ttm.c Date: Tue, 28 Jun 2022 16:55:12 -0500 Message-Id: <20220628215520.20674-5-kevinbrace@gmx.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220628215520.20674-1-kevinbrace@gmx.com> References: <20220628215520.20674-1-kevinbrace@gmx.com> MIME-Version: 1.0 X-Provags-ID: V03:K1:/2V2e5+FI5gvjmT/pFiD1kTrE3cL+R8xco3vlSTrBGUwOmE9gnu HWzLsNP7gBwvapFVfdP+S1mkT1rmDjKU7ERHFhJg2HE0Iup2159pUceg57a6GRerBFELzqZ h2QMMAiYDsRSBfAJjmjR1av9crvBW47Ztzo5PGN6bj6hy13K44AL0D+aEa1AjfZm6zMqLP7 EAJ5Qen56boLkpi6ZivCQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:1wTmCsunUa8=:526cPUKva7/bZsKmfYBBoN aQ9jHSHsLg6tVO00Cqnj4yaVsuhwrvVgPImldsasNxzHldGTZJ8g+2PP1ES3qoOQE9eiXUYGf wFOWjwGG92veZOLsLgnugXy7l8eRxCwILo+JJeWiCk27yaW8D6fQPA9OQvoBjvh18LHPN0BXa DHSJn24tn7OgQ2ybsyoCg+u3ywOnjSHSmq8qULUcssrXFkH/Dre+6Cms803W31sZsdEJrUqwN grFN2ahWl48vcqCr/J1B5OQBLVdoUnX34ZSlJnxT/13KqxlWNNlUvRsjaGWePBcdztKhw7jzk r24hN/vHDNYg/YaWAi90t/KLgzD6x3KIjUY7AIGtkTNCycCSEmgLiKn7xFwRR8UvBzrbIvwRs 7nX+Ce1ukDdlJmMj8h7S8gi3TPuks4KxV9Ykny8mccZfYoP1GLhPsR83LjnP4fadbt/yDi387 laB9LiloOxYkWE2t/b5UMXdIKjzfVvqTvBWP0Pka9s2PM1cmu70tfIzbiGJeyj27RJ5/reUb1 C2p/6YgIqRmqy4XEs8GanTcgM/Ozbtwe5qs29Ixz6mA5RBEXWpb2pbAah4iazQcUESjmCVK8E A6TYIi8jyBp6FzmOUHP5djAcgUU7WFQzxkG0Ga3RH0ZfZ23L2D1j/zSvVOl/iFzi7chVsPKOb TKH+8gSV73bPC8rs0SmXAAbwkKRpJYnkqai7zhz5iyq2CsmDkPat4SusBRHq/X1m2Trugq+2N r6J5iyzd4EzzqnDo8aUFraMDY9dAipRW3wcpgcJ0g9uJhJa0IPu+kCpVPQAMaWU1iR70KY9Nk o77yZYRg/upBPh0jUohxgf9N87JzSE6TATOcvDdCcBKCtMrqVjBygI9mVqKjTWUV1lpM7svrn yT6DKHENMULDM9TUGeNUVlrwjukvM7rRr+MfPh51U6Y6yLdbsiLmW96fh6ITvfHvCHwjL1RXX Pvm3h+MJyD6fnMZZjt5ZdyCk0Y5tjkhotns62q3CvA8PAbIkaXyi96lYydawfoHAQkoHNmfCu eBSmddJmW0sd05Fw05wO9ziMlSfeG1rkC5Defg54jpt6Q7XpdhD40zX9LPr7gtFsAO1qgklGx s7LpmGWK/qO3yYBB8OafYRORNyL0NcH5d+2S3uuFPIm/lLsN0oFr+DHAA== 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, +};