From patchwork Fri Nov 1 21:42:38 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Stultz X-Patchwork-Id: 11223713 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D4140913 for ; Fri, 1 Nov 2019 21:42:55 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id BCBB121906 for ; Fri, 1 Nov 2019 21:42:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BCBB121906 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5BCD16F882; Fri, 1 Nov 2019 21:42:51 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-pf1-x444.google.com (mail-pf1-x444.google.com [IPv6:2607:f8b0:4864:20::444]) by gabe.freedesktop.org (Postfix) with ESMTPS id AB4086F87C for ; Fri, 1 Nov 2019 21:42:47 +0000 (UTC) Received: by mail-pf1-x444.google.com with SMTP id 21so7896710pfj.9 for ; Fri, 01 Nov 2019 14:42:47 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=BKopGp18VfB8thzYt3B0RriqVl7rtglmz7RmjgpOFFU=; b=S5ZaHrIn8Q7sDi1/L1XKEcYo2aW02pQSVSQlXyevCHQRh6ogu76FM5uLgeB1D8nCb3 07KRrHiy69hv+TBWbnlw0xHvc65LgSXoptVbTR4wYXOag+1M6byCvLCsM66JZcgfXVOW 1qXSLgI3Z54h20Hq0EafxHHUWkt/bdpkTIIVrKHULdGjrpspBJZMTD+eCTDX7dr2UaE5 6PT8eTaTu14Tq/teh084UysPuoW3/uFZUyOtZV5I+kKiwNyM1r09taMoBxN35aWlLp6i fSt8zifM0VL2kBTQJ+Ned6IULxyWzxR4r8E5WSKqQbBg0uvrMJ+qpwZCszRr3fQvJHZb Ma8Q== X-Gm-Message-State: APjAAAXGxQHpZ+S8vW3fZEa2iDGA7qZLr6KbgsTWCrBcC3ZCt2WUuTFx EV8N77vaq6P7/k3dARr8adF1UA== X-Google-Smtp-Source: APXvYqzVnfDmbrk/uqmXW1DjOyXPCzoLFf/gLPS8NVxfobXsXQcOTxM2J9LazYgBPcCnG7O8yWAAuw== X-Received: by 2002:a62:1ad6:: with SMTP id a205mr16030502pfa.64.1572644567226; Fri, 01 Nov 2019 14:42:47 -0700 (PDT) Received: from localhost.localdomain ([2601:1c2:680:1319:692:26ff:feda:3a81]) by smtp.gmail.com with ESMTPSA id u36sm8299058pgn.29.2019.11.01.14.42.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Nov 2019 14:42:46 -0700 (PDT) From: John Stultz To: lkml Subject: [PATCH v14 5/5] kselftests: Add dma-heap test Date: Fri, 1 Nov 2019 21:42:38 +0000 Message-Id: <20191101214238.78015-6-john.stultz@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191101214238.78015-1-john.stultz@linaro.org> References: <20191101214238.78015-1-john.stultz@linaro.org> X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=BKopGp18VfB8thzYt3B0RriqVl7rtglmz7RmjgpOFFU=; b=KrVy1MKKM2w+NP5NbHceS58OGoeZN6dYS27RPSclt0xd3XWuYV6w5lEthbMmYmlLlL x3QpmB3a6Fzmywa0O9SRlUcAUC2ZW2z8/u+/FyuHQ7ogLNi4LVKNQBhj9qh+h3kIO2bi 2exN+l3mY+HWqQZw6AUEscSN6x1QbvUn+PtKnQgo4Lwz3VdKBkcJitQjHcaVkrfZeQZP LA1HyzeR3cH9mlXZS+frQI3bPYjNcMUr66tTGGK0DrkgEteUI18DNtJde/F22WN4Cest bZ1kKMycP1QM4w7YUojd2aqAE2ZHdmr8oH9PY7sqcfrg/HmZDo/1RSFas3Y3kGakKZK3 CAiA== X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Hillf Danton , Sandeep Patil , Vincent Donnefort , Chenbo Feng , Alistair Strachan , Liam Mark , Christoph Hellwig , dri-devel@lists.freedesktop.org, "Andrew F . Davis" , Hridya Valsaraju , Sudipto Paul , Pratik Patel MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add very trivial allocation and import test for dma-heaps, utilizing the vgem driver as a test importer. A good chunk of this code taken from: tools/testing/selftests/android/ion/ionmap_test.c Originally by Laura Abbott Cc: Benjamin Gaignard Cc: Sumit Semwal Cc: Liam Mark Cc: Pratik Patel Cc: Brian Starkey Cc: Vincent Donnefort Cc: Sudipto Paul Cc: Andrew F. Davis Cc: Christoph Hellwig Cc: Chenbo Feng Cc: Alistair Strachan Cc: Hridya Valsaraju Cc: Sandeep Patil Cc: Hillf Danton Cc: Dave Airlie Cc: dri-devel@lists.freedesktop.org Reviewed-by: Benjamin Gaignard Reviewed-by: Brian Starkey Acked-by: Laura Abbott Tested-by: Ayan Kumar Halder Signed-off-by: John Stultz --- v2: * Switched to use reworked dma-heap apis v3: * Add simple mmap * Utilize dma-buf testdev to test importing v4: * Rework to use vgem * Pass in fd_flags to match interface changes * Skip . and .. dirs v6: * Number of style/cleanups suggested by Brian v7: * Whitespace fixup for checkpatch v8: * More checkpatch whitespace fixups v9: * Better handling error returns out to main, suggested by Brian Starkey * Switch to using snprintf, suggested by Brian v14: * Fix a missing return value * Add calls to test the GET_FEATURES ioctl * Build fix reported by kernel test robot and fixed by Xiao Yang * Minor Makefile cleanups --- tools/testing/selftests/dmabuf-heaps/Makefile | 6 + .../selftests/dmabuf-heaps/dmabuf-heap.c | 255 ++++++++++++++++++ 2 files changed, 261 insertions(+) create mode 100644 tools/testing/selftests/dmabuf-heaps/Makefile create mode 100644 tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c diff --git a/tools/testing/selftests/dmabuf-heaps/Makefile b/tools/testing/selftests/dmabuf-heaps/Makefile new file mode 100644 index 000000000000..607c2acd2082 --- /dev/null +++ b/tools/testing/selftests/dmabuf-heaps/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0 +CFLAGS += -static -O3 -Wl,-no-as-needed -Wall -I../../../../usr/include + +TEST_GEN_PROGS = dmabuf-heap + +include ../lib.mk diff --git a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c new file mode 100644 index 000000000000..ec47901ef2e2 --- /dev/null +++ b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c @@ -0,0 +1,255 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "../../../../include/uapi/linux/dma-heap.h" + +#define DEVPATH "/dev/dma_heap" + +static int check_vgem(int fd) +{ + drm_version_t version = { 0 }; + char name[5]; + int ret; + + version.name_len = 4; + version.name = name; + + ret = ioctl(fd, DRM_IOCTL_VERSION, &version); + if (ret) + return 0; + + return !strcmp(name, "vgem"); +} + +static int open_vgem(void) +{ + int i, fd; + const char *drmstr = "/dev/dri/card"; + + fd = -1; + for (i = 0; i < 16; i++) { + char name[80]; + + snprintf(name, 80, "%s%u", drmstr, i); + + fd = open(name, O_RDWR); + if (fd < 0) + continue; + + if (!check_vgem(fd)) { + close(fd); + fd = -1; + continue; + } else { + break; + } + } + return fd; +} + +static int import_vgem_fd(int vgem_fd, int dma_buf_fd, uint32_t *handle) +{ + struct drm_prime_handle import_handle = { + .fd = dma_buf_fd, + .flags = 0, + .handle = 0, + }; + int ret; + + ret = ioctl(vgem_fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &import_handle); + if (ret == 0) + *handle = import_handle.handle; + return ret; +} + +static void close_handle(int vgem_fd, uint32_t handle) +{ + struct drm_gem_close close = { + .handle = handle, + }; + + ioctl(vgem_fd, DRM_IOCTL_GEM_CLOSE, &close); +} + +static int dmabuf_heap_open(char *name) +{ + int ret, fd; + char buf[256]; + + ret = snprintf(buf, 256, "%s/%s", DEVPATH, name); + if (ret < 0) { + printf("snprintf failed!\n"); + return ret; + } + + fd = open(buf, O_RDWR); + if (fd < 0) + printf("open %s failed!\n", buf); + return fd; +} + +static int dmabuf_heap_get_features(int fd, unsigned long long *features) +{ + struct dma_heap_get_features_data data = {0}; + int ret; + + ret = ioctl(fd, DMA_HEAP_IOC_GET_FEATURES, &data); + if (ret < 0) + return ret; + + *features = (int)data.features; + return ret; +} + +static int dmabuf_heap_alloc(int fd, size_t len, unsigned int flags, + int *dmabuf_fd) +{ + struct dma_heap_allocation_data data = { + .len = len, + .fd_flags = O_RDWR | O_CLOEXEC, + .heap_flags = flags, + }; + int ret; + + if (!dmabuf_fd) + return -EINVAL; + + ret = ioctl(fd, DMA_HEAP_IOC_ALLOC, &data); + if (ret < 0) + return ret; + *dmabuf_fd = (int)data.fd; + return ret; +} + +static void dmabuf_sync(int fd, int start_stop) +{ + struct dma_buf_sync sync = { + .flags = start_stop | DMA_BUF_SYNC_RW, + }; + int ret; + + ret = ioctl(fd, DMA_BUF_IOCTL_SYNC, &sync); + if (ret) + printf("sync failed %d\n", errno); +} + +#define ONE_MEG (1024 * 1024) + +static int do_test(char *heap_name) +{ + int heap_fd = -1, dmabuf_fd = -1, importer_fd = -1; + uint32_t handle = 0; + void *p = NULL; + unsigned long long features; + int ret; + + printf("Testing heap: %s\n", heap_name); + + heap_fd = dmabuf_heap_open(heap_name); + if (heap_fd < 0) + return -1; + + dmabuf_heap_get_features(heap_fd, &features); + printf("Interface features: 0x%llx\n", features); + + printf("Allocating 1 MEG\n"); + ret = dmabuf_heap_alloc(heap_fd, ONE_MEG, 0, &dmabuf_fd); + if (ret) { + printf("Allocation Failed!\n"); + ret = -1; + goto out; + } + /* mmap and write a simple pattern */ + p = mmap(NULL, + ONE_MEG, + PROT_READ | PROT_WRITE, + MAP_SHARED, + dmabuf_fd, + 0); + if (p == MAP_FAILED) { + printf("mmap() failed: %m\n"); + ret = -1; + goto out; + } + printf("mmap passed\n"); + + dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_START); + memset(p, 1, ONE_MEG / 2); + memset((char *)p + ONE_MEG / 2, 0, ONE_MEG / 2); + dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_END); + + importer_fd = open_vgem(); + if (importer_fd < 0) { + ret = importer_fd; + printf("Failed to open vgem\n"); + goto out; + } + + ret = import_vgem_fd(importer_fd, dmabuf_fd, &handle); + if (ret < 0) { + printf("Failed to import buffer\n"); + goto out; + } + printf("import passed\n"); + + dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_START); + memset(p, 0xff, ONE_MEG); + dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_END); + printf("syncs passed\n"); + + close_handle(importer_fd, handle); + ret = 0; + +out: + if (p) + munmap(p, ONE_MEG); + if (importer_fd >= 0) + close(importer_fd); + if (dmabuf_fd >= 0) + close(dmabuf_fd); + if (heap_fd >= 0) + close(heap_fd); + + return ret; +} + +int main(void) +{ + DIR *d; + struct dirent *dir; + int ret = -1; + + d = opendir(DEVPATH); + if (!d) { + printf("No %s directory?\n", DEVPATH); + return -1; + } + + while ((dir = readdir(d)) != NULL) { + if (!strncmp(dir->d_name, ".", 2)) + continue; + if (!strncmp(dir->d_name, "..", 3)) + continue; + + ret = do_test(dir->d_name); + if (ret) + break; + } + closedir(d); + + return ret; +}