diff options
Diffstat (limited to 'freedreno/msm/msm_bo.c')
| -rw-r--r-- | freedreno/msm/msm_bo.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/freedreno/msm/msm_bo.c b/freedreno/msm/msm_bo.c new file mode 100644 index 0000000..8b3d0bc --- /dev/null +++ b/freedreno/msm/msm_bo.c @@ -0,0 +1,170 @@ +/* -*- 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; +} |