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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>
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#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 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,
.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;
}
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