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-rw-r--r--freedreno/msm/msm_bo.c170
1 files changed, 170 insertions, 0 deletions
diff --git a/freedreno/msm/msm_bo.c b/freedreno/msm/msm_bo.c
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+++ b/freedreno/msm/msm_bo.c
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+/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
+
+/*
+ * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
+ *
+ * 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, sublicense,
+ * 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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ *
+ * Authors:
+ * Rob Clark <robclark@freedesktop.org>
+ */
+
+#include "msm_priv.h"
+
+static int bo_allocate(struct msm_bo *msm_bo)
+{
+ struct fd_bo *bo = &msm_bo->base;
+ if (!msm_bo->offset) {
+ struct drm_msm_gem_info req = {
+ .handle = bo->handle,
+ };
+ int ret;
+
+ /* if the buffer is already backed by pages then this
+ * doesn't actually do anything (other than giving us
+ * the offset)
+ */
+ ret = drmCommandWriteRead(bo->dev->fd, DRM_MSM_GEM_INFO,
+ &req, sizeof(req));
+ if (ret) {
+ ERROR_MSG("alloc failed: %s", strerror(errno));
+ return ret;
+ }
+
+ msm_bo->offset = req.offset;
+ }
+
+ return 0;
+}
+
+static int msm_bo_offset(struct fd_bo *bo, uint64_t *offset)
+{
+ struct msm_bo *msm_bo = to_msm_bo(bo);
+ int ret = bo_allocate(msm_bo);
+ if (ret)
+ return ret;
+ *offset = msm_bo->offset;
+ return 0;
+}
+
+static int msm_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op)
+{
+ struct drm_msm_gem_cpu_prep req = {
+ .handle = bo->handle,
+ .op = op,
+ };
+
+ get_abs_timeout(&req.timeout, 5000000000);
+
+ return drmCommandWrite(bo->dev->fd, DRM_MSM_GEM_CPU_PREP, &req, sizeof(req));
+}
+
+static void msm_bo_cpu_fini(struct fd_bo *bo)
+{
+ struct drm_msm_gem_cpu_fini req = {
+ .handle = bo->handle,
+ };
+
+ drmCommandWrite(bo->dev->fd, DRM_MSM_GEM_CPU_FINI, &req, sizeof(req));
+}
+
+static int msm_bo_madvise(struct fd_bo *bo, int willneed)
+{
+ struct drm_msm_gem_madvise req = {
+ .handle = bo->handle,
+ .madv = willneed ? MSM_MADV_WILLNEED : MSM_MADV_DONTNEED,
+ };
+ int ret;
+
+ /* older kernels do not support this: */
+ if (bo->dev->version < FD_VERSION_MADVISE)
+ return willneed;
+
+ ret = drmCommandWriteRead(bo->dev->fd, DRM_MSM_GEM_MADVISE, &req, sizeof(req));
+ if (ret)
+ return ret;
+
+ return req.retained;
+}
+
+static uint64_t msm_bo_iova(struct fd_bo *bo)
+{
+ struct drm_msm_gem_info req = {
+ .handle = bo->handle,
+ .flags = MSM_INFO_IOVA,
+ };
+
+ drmCommandWriteRead(bo->dev->fd, DRM_MSM_GEM_INFO, &req, sizeof(req));
+
+ return req.offset;
+}
+
+static void msm_bo_destroy(struct fd_bo *bo)
+{
+ struct msm_bo *msm_bo = to_msm_bo(bo);
+ free(msm_bo);
+
+}
+
+static const struct fd_bo_funcs funcs = {
+ .offset = msm_bo_offset,
+ .cpu_prep = msm_bo_cpu_prep,
+ .cpu_fini = msm_bo_cpu_fini,
+ .madvise = msm_bo_madvise,
+ .iova = msm_bo_iova,
+ .destroy = msm_bo_destroy,
+};
+
+/* allocate a buffer handle: */
+drm_private int msm_bo_new_handle(struct fd_device *dev,
+ uint32_t size, uint32_t flags, uint32_t *handle)
+{
+ struct drm_msm_gem_new req = {
+ .size = size,
+ .flags = MSM_BO_WC, // TODO figure out proper flags..
+ };
+ int ret;
+
+ ret = drmCommandWriteRead(dev->fd, DRM_MSM_GEM_NEW,
+ &req, sizeof(req));
+ if (ret)
+ return ret;
+
+ *handle = req.handle;
+
+ return 0;
+}
+
+/* allocate a new buffer object */
+drm_private struct fd_bo * msm_bo_from_handle(struct fd_device *dev,
+ uint32_t size, uint32_t handle)
+{
+ struct msm_bo *msm_bo;
+ struct fd_bo *bo;
+
+ msm_bo = calloc(1, sizeof(*msm_bo));
+ if (!msm_bo)
+ return NULL;
+
+ bo = &msm_bo->base;
+ bo->funcs = &funcs;
+
+ return bo;
+}