/* -*- 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 "kgsl_priv.h"
#include <linux/fb.h>
static int set_memtype(struct fd_device *dev, uint32_t handle, uint32_t flags)
{
struct drm_kgsl_gem_memtype req = {
.handle = handle,
.type = flags & DRM_FREEDRENO_GEM_TYPE_MEM_MASK,
};
return drmCommandWrite(dev->fd, DRM_KGSL_GEM_SETMEMTYPE,
&req, sizeof(req));
}
static int bo_alloc(struct kgsl_bo *kgsl_bo)
{
struct fd_bo *bo = &kgsl_bo->base;
if (!kgsl_bo->offset) {
struct drm_kgsl_gem_alloc 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_KGSL_GEM_ALLOC,
&req, sizeof(req));
if (ret) {
ERROR_MSG("alloc failed: %s", strerror(errno));
return ret;
}
kgsl_bo->offset = req.offset;
}
return 0;
}
static int kgsl_bo_offset(struct fd_bo *bo, uint64_t *offset)
{
struct kgsl_bo *kgsl_bo = to_kgsl_bo(bo);
int ret = bo_alloc(kgsl_bo);
if (ret)
return ret;
*offset = kgsl_bo->offset;
return 0;
}
static int kgsl_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op)
{
uint32_t timestamp = kgsl_bo_get_timestamp(to_kgsl_bo(bo));
if (op & DRM_FREEDRENO_PREP_NOSYNC) {
uint32_t current;
int ret;
/* special case for is_idle().. we can't really handle that
* properly in kgsl (perhaps we need a way to just disable
* the bo-cache for kgsl?)
*/
if (!pipe)
return -EBUSY;
ret = kgsl_pipe_timestamp(to_kgsl_pipe(pipe), ¤t);
if (ret)
return ret;
if (timestamp > current)
return -EBUSY;
return 0;
}
if (timestamp)
fd_pipe_wait(pipe, timestamp);
return 0;
}
static void kgsl_bo_cpu_fini(struct fd_bo *bo)
{
}
static int kgsl_bo_madvise(struct fd_bo *bo, int willneed)
{
return willneed; /* not supported by kgsl */
}
static void kgsl_bo_destroy(struct fd_bo *bo)
{
struct kgsl_bo *kgsl_bo = to_kgsl_bo(bo);
free(kgsl_bo);
}
static const struct fd_bo_funcs funcs = {
.offset = kgsl_bo_offset,
.cpu_prep = kgsl_bo_cpu_prep,
.cpu_fini = kgsl_bo_cpu_fini,
.madvise = kgsl_bo_madvise,
.destroy = kgsl_bo_destroy,
};
/* allocate a buffer handle: */
drm_private int kgsl_bo_new_handle(struct fd_device *dev,
uint32_t size, uint32_t flags, uint32_t *handle)
{
struct drm_kgsl_gem_create req = {
.size = size,
};
int ret;
ret = drmCommandWriteRead(dev->fd, DRM_KGSL_GEM_CREATE,
&req, sizeof(req));
if (ret)
return ret;
// TODO make flags match msm driver, since kgsl is legacy..
// translate flags in kgsl..
set_memtype(dev, req.handle, flags);
*handle = req.handle;
return 0;
}
/* allocate a new buffer object */
drm_private struct fd_bo * kgsl_bo_from_handle(struct fd_device *dev,
uint32_t size, uint32_t handle)
{
struct kgsl_bo *kgsl_bo;
struct fd_bo *bo;
unsigned i;
kgsl_bo = calloc(1, sizeof(*kgsl_bo));
if (!kgsl_bo)
return NULL;
bo = &kgsl_bo->base;
bo->funcs = &funcs;
for (i = 0; i < ARRAY_SIZE(kgsl_bo->list); i++)
list_inithead(&kgsl_bo->list[i]);
return bo;
}
struct fd_bo *
fd_bo_from_fbdev(struct fd_pipe *pipe, int fbfd, uint32_t size)
{
struct fd_bo *bo;
if (!is_kgsl_pipe(pipe))
return NULL;
bo = fd_bo_new(pipe->dev, 1, 0);
/* this is fugly, but works around a bug in the kernel..
* priv->memdesc.size never gets set, so getbufinfo ioctl
* thinks the buffer hasn't be allocate and fails
*/
if (bo) {
void *fbmem = drm_mmap(NULL, size, PROT_READ | PROT_WRITE,
MAP_SHARED, fbfd, 0);
struct kgsl_map_user_mem req = {
.memtype = KGSL_USER_MEM_TYPE_ADDR,
.len = size,
.offset = 0,
.hostptr = (unsigned long)fbmem,
};
struct kgsl_bo *kgsl_bo = to_kgsl_bo(bo);
int ret;
ret = ioctl(to_kgsl_pipe(pipe)->fd, IOCTL_KGSL_MAP_USER_MEM, &req);
if (ret) {
ERROR_MSG("mapping user mem failed: %s",
strerror(errno));
goto fail;
}
kgsl_bo->gpuaddr = req.gpuaddr;
bo->map = fbmem;
}
return bo;
fail:
if (bo)
fd_bo_del(bo);
return NULL;
}
drm_private uint32_t kgsl_bo_gpuaddr(struct kgsl_bo *kgsl_bo, uint32_t offset)
{
struct fd_bo *bo = &kgsl_bo->base;
if (!kgsl_bo->gpuaddr) {
struct drm_kgsl_gem_bufinfo req = {
.handle = bo->handle,
};
int ret;
ret = bo_alloc(kgsl_bo);
if (ret) {
return ret;
}
ret = drmCommandWriteRead(bo->dev->fd, DRM_KGSL_GEM_GET_BUFINFO,
&req, sizeof(req));
if (ret) {
ERROR_MSG("get bufinfo failed: %s", strerror(errno));
return 0;
}
kgsl_bo->gpuaddr = req.gpuaddr[0];
}
return kgsl_bo->gpuaddr + offset;
}
/*
* Super-cheezy way to synchronization between mesa and ddx.. the
* SET_ACTIVE ioctl gives us a way to stash a 32b # w/ a GEM bo, and
* GET_BUFINFO gives us a way to retrieve it. We use this to stash
* the timestamp of the last ISSUEIBCMDS on the buffer.
*
* To avoid an obscene amount of syscalls, we:
* 1) Only set the timestamp for buffers w/ an flink name, ie.
* only buffers shared across processes. This is enough to
* catch the DRI2 buffers.
* 2) Only set the timestamp for buffers submitted to the 3d ring
* and only check the timestamps on buffers submitted to the
* 2d ring. This should be enough to handle synchronizing of
* presentation blit. We could do synchronization in the other
* direction too, but that would be problematic if we are using
* the 3d ring from DDX, since client side wouldn't know this.
*
* The waiting on timestamp happens before flush, and setting of
* timestamp happens after flush. It is transparent to the user
* of libdrm_freedreno as all the tracking of buffers happens via
* _emit_reloc()..
*/
drm_private void kgsl_bo_set_timestamp(struct kgsl_bo *kgsl_bo,
uint32_t timestamp)
{
struct fd_bo *bo = &kgsl_bo->base;
if (bo->name) {
struct drm_kgsl_gem_active req = {
.handle = bo->handle,
.active = timestamp,
};
int ret;
ret = drmCommandWrite(bo->dev->fd, DRM_KGSL_GEM_SET_ACTIVE,
&req, sizeof(req));
if (ret) {
ERROR_MSG("set active failed: %s", strerror(errno));
}
}
}
drm_private uint32_t kgsl_bo_get_timestamp(struct kgsl_bo *kgsl_bo)
{
struct fd_bo *bo = &kgsl_bo->base;
uint32_t timestamp = 0;
if (bo->name) {
struct drm_kgsl_gem_bufinfo req = {
.handle = bo->handle,
};
int ret;
ret = drmCommandWriteRead(bo->dev->fd, DRM_KGSL_GEM_GET_BUFINFO,
&req, sizeof(req));
if (ret) {
ERROR_MSG("get bufinfo failed: %s", strerror(errno));
return 0;
}
timestamp = req.active;
}
return timestamp;
}
