2015-08-21 17:55:36 -06:00
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/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
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/*
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* Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Authors:
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* Rob Clark <robclark@freedesktop.org>
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "kgsl_priv.h"
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#include <linux/fb.h>
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static int set_memtype(struct fd_device *dev, uint32_t handle, uint32_t flags)
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{
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struct drm_kgsl_gem_memtype req = {
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.handle = handle,
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.type = flags & DRM_FREEDRENO_GEM_TYPE_MEM_MASK,
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};
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return drmCommandWrite(dev->fd, DRM_KGSL_GEM_SETMEMTYPE,
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&req, sizeof(req));
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}
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static int bo_alloc(struct kgsl_bo *kgsl_bo)
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{
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struct fd_bo *bo = &kgsl_bo->base;
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if (!kgsl_bo->offset) {
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struct drm_kgsl_gem_alloc req = {
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.handle = bo->handle,
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};
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int ret;
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/* if the buffer is already backed by pages then this
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* doesn't actually do anything (other than giving us
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* the offset)
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*/
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ret = drmCommandWriteRead(bo->dev->fd, DRM_KGSL_GEM_ALLOC,
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&req, sizeof(req));
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if (ret) {
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ERROR_MSG("alloc failed: %s", strerror(errno));
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return ret;
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}
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kgsl_bo->offset = req.offset;
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}
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return 0;
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}
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static int kgsl_bo_offset(struct fd_bo *bo, uint64_t *offset)
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{
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struct kgsl_bo *kgsl_bo = to_kgsl_bo(bo);
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int ret = bo_alloc(kgsl_bo);
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if (ret)
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return ret;
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*offset = kgsl_bo->offset;
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return 0;
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}
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static int kgsl_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op)
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{
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uint32_t timestamp = kgsl_bo_get_timestamp(to_kgsl_bo(bo));
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if (op & DRM_FREEDRENO_PREP_NOSYNC) {
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uint32_t current;
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int ret;
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/* special case for is_idle().. we can't really handle that
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* properly in kgsl (perhaps we need a way to just disable
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* the bo-cache for kgsl?)
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*/
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if (!pipe)
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return -EBUSY;
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ret = kgsl_pipe_timestamp(to_kgsl_pipe(pipe), ¤t);
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if (ret)
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return ret;
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if (timestamp > current)
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return -EBUSY;
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return 0;
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}
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if (timestamp)
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fd_pipe_wait(pipe, timestamp);
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return 0;
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}
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static void kgsl_bo_cpu_fini(struct fd_bo *bo)
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{
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}
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static void kgsl_bo_destroy(struct fd_bo *bo)
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{
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struct kgsl_bo *kgsl_bo = to_kgsl_bo(bo);
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free(kgsl_bo);
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}
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2015-12-27 01:58:00 -07:00
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static const struct fd_bo_funcs funcs = {
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2015-08-21 17:55:36 -06:00
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.offset = kgsl_bo_offset,
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.cpu_prep = kgsl_bo_cpu_prep,
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.cpu_fini = kgsl_bo_cpu_fini,
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.destroy = kgsl_bo_destroy,
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};
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/* allocate a buffer handle: */
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drm_private int kgsl_bo_new_handle(struct fd_device *dev,
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uint32_t size, uint32_t flags, uint32_t *handle)
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{
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struct drm_kgsl_gem_create req = {
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.size = size,
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};
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int ret;
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ret = drmCommandWriteRead(dev->fd, DRM_KGSL_GEM_CREATE,
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&req, sizeof(req));
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if (ret)
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return ret;
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// TODO make flags match msm driver, since kgsl is legacy..
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// translate flags in kgsl..
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set_memtype(dev, req.handle, flags);
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*handle = req.handle;
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return 0;
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}
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/* allocate a new buffer object */
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drm_private struct fd_bo * kgsl_bo_from_handle(struct fd_device *dev,
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uint32_t size, uint32_t handle)
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{
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struct kgsl_bo *kgsl_bo;
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struct fd_bo *bo;
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unsigned i;
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kgsl_bo = calloc(1, sizeof(*kgsl_bo));
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if (!kgsl_bo)
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return NULL;
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bo = &kgsl_bo->base;
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bo->funcs = &funcs;
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for (i = 0; i < ARRAY_SIZE(kgsl_bo->list); i++)
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list_inithead(&kgsl_bo->list[i]);
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return bo;
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}
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struct fd_bo *
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fd_bo_from_fbdev(struct fd_pipe *pipe, int fbfd, uint32_t size)
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{
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struct fd_bo *bo;
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if (!is_kgsl_pipe(pipe))
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return NULL;
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bo = fd_bo_new(pipe->dev, 1, 0);
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/* this is fugly, but works around a bug in the kernel..
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* priv->memdesc.size never gets set, so getbufinfo ioctl
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* thinks the buffer hasn't be allocate and fails
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*/
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if (bo) {
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void *fbmem = drm_mmap(NULL, size, PROT_READ | PROT_WRITE,
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MAP_SHARED, fbfd, 0);
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struct kgsl_map_user_mem req = {
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.memtype = KGSL_USER_MEM_TYPE_ADDR,
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.len = size,
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.offset = 0,
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.hostptr = (unsigned long)fbmem,
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};
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struct kgsl_bo *kgsl_bo = to_kgsl_bo(bo);
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int ret;
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ret = ioctl(to_kgsl_pipe(pipe)->fd, IOCTL_KGSL_MAP_USER_MEM, &req);
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if (ret) {
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ERROR_MSG("mapping user mem failed: %s",
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strerror(errno));
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goto fail;
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}
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kgsl_bo->gpuaddr = req.gpuaddr;
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bo->map = fbmem;
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}
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return bo;
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fail:
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if (bo)
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fd_bo_del(bo);
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return NULL;
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}
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drm_private uint32_t kgsl_bo_gpuaddr(struct kgsl_bo *kgsl_bo, uint32_t offset)
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{
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struct fd_bo *bo = &kgsl_bo->base;
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if (!kgsl_bo->gpuaddr) {
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struct drm_kgsl_gem_bufinfo req = {
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.handle = bo->handle,
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};
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int ret;
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ret = bo_alloc(kgsl_bo);
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if (ret) {
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return ret;
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}
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ret = drmCommandWriteRead(bo->dev->fd, DRM_KGSL_GEM_GET_BUFINFO,
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&req, sizeof(req));
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if (ret) {
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ERROR_MSG("get bufinfo failed: %s", strerror(errno));
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return 0;
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}
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kgsl_bo->gpuaddr = req.gpuaddr[0];
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}
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return kgsl_bo->gpuaddr + offset;
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}
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/*
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* Super-cheezy way to synchronization between mesa and ddx.. the
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* SET_ACTIVE ioctl gives us a way to stash a 32b # w/ a GEM bo, and
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* GET_BUFINFO gives us a way to retrieve it. We use this to stash
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* the timestamp of the last ISSUEIBCMDS on the buffer.
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*
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* To avoid an obscene amount of syscalls, we:
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* 1) Only set the timestamp for buffers w/ an flink name, ie.
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* only buffers shared across processes. This is enough to
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* catch the DRI2 buffers.
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* 2) Only set the timestamp for buffers submitted to the 3d ring
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* and only check the timestamps on buffers submitted to the
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* 2d ring. This should be enough to handle synchronizing of
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* presentation blit. We could do synchronization in the other
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* direction too, but that would be problematic if we are using
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* the 3d ring from DDX, since client side wouldn't know this.
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*
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* The waiting on timestamp happens before flush, and setting of
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* timestamp happens after flush. It is transparent to the user
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* of libdrm_freedreno as all the tracking of buffers happens via
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* _emit_reloc()..
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*/
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drm_private void kgsl_bo_set_timestamp(struct kgsl_bo *kgsl_bo,
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uint32_t timestamp)
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{
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struct fd_bo *bo = &kgsl_bo->base;
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if (bo->name) {
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struct drm_kgsl_gem_active req = {
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.handle = bo->handle,
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.active = timestamp,
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};
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int ret;
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ret = drmCommandWrite(bo->dev->fd, DRM_KGSL_GEM_SET_ACTIVE,
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&req, sizeof(req));
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if (ret) {
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ERROR_MSG("set active failed: %s", strerror(errno));
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}
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}
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}
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drm_private uint32_t kgsl_bo_get_timestamp(struct kgsl_bo *kgsl_bo)
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{
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struct fd_bo *bo = &kgsl_bo->base;
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uint32_t timestamp = 0;
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if (bo->name) {
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struct drm_kgsl_gem_bufinfo req = {
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.handle = bo->handle,
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};
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int ret;
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ret = drmCommandWriteRead(bo->dev->fd, DRM_KGSL_GEM_GET_BUFINFO,
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&req, sizeof(req));
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if (ret) {
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ERROR_MSG("get bufinfo failed: %s", strerror(errno));
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return 0;
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}
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timestamp = req.active;
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}
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return timestamp;
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}
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