mirror of https://gitee.com/openkylin/linux.git
297 lines
6.5 KiB
C
297 lines
6.5 KiB
C
// SPDX-License-Identifier: GPL-2.0 OR MIT
|
|
/* Copyright 2017-2019 Qiang Yu <yuq825@gmail.com> */
|
|
|
|
#include <linux/mm.h>
|
|
#include <linux/sync_file.h>
|
|
#include <linux/pagemap.h>
|
|
|
|
#include <drm/drm_file.h>
|
|
#include <drm/drm_syncobj.h>
|
|
#include <drm/drm_utils.h>
|
|
|
|
#include <drm/lima_drm.h>
|
|
|
|
#include "lima_drv.h"
|
|
#include "lima_gem.h"
|
|
#include "lima_vm.h"
|
|
|
|
int lima_gem_create_handle(struct drm_device *dev, struct drm_file *file,
|
|
u32 size, u32 flags, u32 *handle)
|
|
{
|
|
int err;
|
|
gfp_t mask;
|
|
struct drm_gem_shmem_object *shmem;
|
|
struct drm_gem_object *obj;
|
|
struct sg_table *sgt;
|
|
|
|
shmem = drm_gem_shmem_create(dev, size);
|
|
if (IS_ERR(shmem))
|
|
return PTR_ERR(shmem);
|
|
|
|
obj = &shmem->base;
|
|
|
|
/* Mali Utgard GPU can only support 32bit address space */
|
|
mask = mapping_gfp_mask(obj->filp->f_mapping);
|
|
mask &= ~__GFP_HIGHMEM;
|
|
mask |= __GFP_DMA32;
|
|
mapping_set_gfp_mask(obj->filp->f_mapping, mask);
|
|
|
|
sgt = drm_gem_shmem_get_pages_sgt(obj);
|
|
if (IS_ERR(sgt)) {
|
|
err = PTR_ERR(sgt);
|
|
goto out;
|
|
}
|
|
|
|
err = drm_gem_handle_create(file, obj, handle);
|
|
|
|
out:
|
|
/* drop reference from allocate - handle holds it now */
|
|
drm_gem_object_put_unlocked(obj);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void lima_gem_free_object(struct drm_gem_object *obj)
|
|
{
|
|
struct lima_bo *bo = to_lima_bo(obj);
|
|
|
|
if (!list_empty(&bo->va))
|
|
dev_err(obj->dev->dev, "lima gem free bo still has va\n");
|
|
|
|
drm_gem_shmem_free_object(obj);
|
|
}
|
|
|
|
static int lima_gem_object_open(struct drm_gem_object *obj, struct drm_file *file)
|
|
{
|
|
struct lima_bo *bo = to_lima_bo(obj);
|
|
struct lima_drm_priv *priv = to_lima_drm_priv(file);
|
|
struct lima_vm *vm = priv->vm;
|
|
|
|
return lima_vm_bo_add(vm, bo, true);
|
|
}
|
|
|
|
static void lima_gem_object_close(struct drm_gem_object *obj, struct drm_file *file)
|
|
{
|
|
struct lima_bo *bo = to_lima_bo(obj);
|
|
struct lima_drm_priv *priv = to_lima_drm_priv(file);
|
|
struct lima_vm *vm = priv->vm;
|
|
|
|
lima_vm_bo_del(vm, bo);
|
|
}
|
|
|
|
static const struct drm_gem_object_funcs lima_gem_funcs = {
|
|
.free = lima_gem_free_object,
|
|
.open = lima_gem_object_open,
|
|
.close = lima_gem_object_close,
|
|
.print_info = drm_gem_shmem_print_info,
|
|
.pin = drm_gem_shmem_pin,
|
|
.unpin = drm_gem_shmem_unpin,
|
|
.get_sg_table = drm_gem_shmem_get_sg_table,
|
|
.vmap = drm_gem_shmem_vmap,
|
|
.vunmap = drm_gem_shmem_vunmap,
|
|
.mmap = drm_gem_shmem_mmap,
|
|
};
|
|
|
|
struct drm_gem_object *lima_gem_create_object(struct drm_device *dev, size_t size)
|
|
{
|
|
struct lima_bo *bo;
|
|
|
|
bo = kzalloc(sizeof(*bo), GFP_KERNEL);
|
|
if (!bo)
|
|
return NULL;
|
|
|
|
mutex_init(&bo->lock);
|
|
INIT_LIST_HEAD(&bo->va);
|
|
|
|
bo->base.base.funcs = &lima_gem_funcs;
|
|
|
|
return &bo->base.base;
|
|
}
|
|
|
|
int lima_gem_get_info(struct drm_file *file, u32 handle, u32 *va, u64 *offset)
|
|
{
|
|
struct drm_gem_object *obj;
|
|
struct lima_bo *bo;
|
|
struct lima_drm_priv *priv = to_lima_drm_priv(file);
|
|
struct lima_vm *vm = priv->vm;
|
|
|
|
obj = drm_gem_object_lookup(file, handle);
|
|
if (!obj)
|
|
return -ENOENT;
|
|
|
|
bo = to_lima_bo(obj);
|
|
|
|
*va = lima_vm_get_va(vm, bo);
|
|
|
|
*offset = drm_vma_node_offset_addr(&obj->vma_node);
|
|
|
|
drm_gem_object_put_unlocked(obj);
|
|
return 0;
|
|
}
|
|
|
|
static int lima_gem_sync_bo(struct lima_sched_task *task, struct lima_bo *bo,
|
|
bool write, bool explicit)
|
|
{
|
|
int err = 0;
|
|
|
|
if (!write) {
|
|
err = dma_resv_reserve_shared(lima_bo_resv(bo), 1);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
/* explicit sync use user passed dep fence */
|
|
if (explicit)
|
|
return 0;
|
|
|
|
return drm_gem_fence_array_add_implicit(&task->deps, &bo->base.base, write);
|
|
}
|
|
|
|
static int lima_gem_add_deps(struct drm_file *file, struct lima_submit *submit)
|
|
{
|
|
int i, err;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(submit->in_sync); i++) {
|
|
struct dma_fence *fence = NULL;
|
|
|
|
if (!submit->in_sync[i])
|
|
continue;
|
|
|
|
err = drm_syncobj_find_fence(file, submit->in_sync[i],
|
|
0, 0, &fence);
|
|
if (err)
|
|
return err;
|
|
|
|
err = drm_gem_fence_array_add(&submit->task->deps, fence);
|
|
if (err) {
|
|
dma_fence_put(fence);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int lima_gem_submit(struct drm_file *file, struct lima_submit *submit)
|
|
{
|
|
int i, err = 0;
|
|
struct ww_acquire_ctx ctx;
|
|
struct lima_drm_priv *priv = to_lima_drm_priv(file);
|
|
struct lima_vm *vm = priv->vm;
|
|
struct drm_syncobj *out_sync = NULL;
|
|
struct dma_fence *fence;
|
|
struct lima_bo **bos = submit->lbos;
|
|
|
|
if (submit->out_sync) {
|
|
out_sync = drm_syncobj_find(file, submit->out_sync);
|
|
if (!out_sync)
|
|
return -ENOENT;
|
|
}
|
|
|
|
for (i = 0; i < submit->nr_bos; i++) {
|
|
struct drm_gem_object *obj;
|
|
struct lima_bo *bo;
|
|
|
|
obj = drm_gem_object_lookup(file, submit->bos[i].handle);
|
|
if (!obj) {
|
|
err = -ENOENT;
|
|
goto err_out0;
|
|
}
|
|
|
|
bo = to_lima_bo(obj);
|
|
|
|
/* increase refcnt of gpu va map to prevent unmapped when executing,
|
|
* will be decreased when task done
|
|
*/
|
|
err = lima_vm_bo_add(vm, bo, false);
|
|
if (err) {
|
|
drm_gem_object_put_unlocked(obj);
|
|
goto err_out0;
|
|
}
|
|
|
|
bos[i] = bo;
|
|
}
|
|
|
|
err = drm_gem_lock_reservations((struct drm_gem_object **)bos,
|
|
submit->nr_bos, &ctx);
|
|
if (err)
|
|
goto err_out0;
|
|
|
|
err = lima_sched_task_init(
|
|
submit->task, submit->ctx->context + submit->pipe,
|
|
bos, submit->nr_bos, vm);
|
|
if (err)
|
|
goto err_out1;
|
|
|
|
err = lima_gem_add_deps(file, submit);
|
|
if (err)
|
|
goto err_out2;
|
|
|
|
for (i = 0; i < submit->nr_bos; i++) {
|
|
err = lima_gem_sync_bo(
|
|
submit->task, bos[i],
|
|
submit->bos[i].flags & LIMA_SUBMIT_BO_WRITE,
|
|
submit->flags & LIMA_SUBMIT_FLAG_EXPLICIT_FENCE);
|
|
if (err)
|
|
goto err_out2;
|
|
}
|
|
|
|
fence = lima_sched_context_queue_task(
|
|
submit->ctx->context + submit->pipe, submit->task);
|
|
|
|
for (i = 0; i < submit->nr_bos; i++) {
|
|
if (submit->bos[i].flags & LIMA_SUBMIT_BO_WRITE)
|
|
dma_resv_add_excl_fence(lima_bo_resv(bos[i]), fence);
|
|
else
|
|
dma_resv_add_shared_fence(lima_bo_resv(bos[i]), fence);
|
|
}
|
|
|
|
drm_gem_unlock_reservations((struct drm_gem_object **)bos,
|
|
submit->nr_bos, &ctx);
|
|
|
|
for (i = 0; i < submit->nr_bos; i++)
|
|
drm_gem_object_put_unlocked(&bos[i]->base.base);
|
|
|
|
if (out_sync) {
|
|
drm_syncobj_replace_fence(out_sync, fence);
|
|
drm_syncobj_put(out_sync);
|
|
}
|
|
|
|
dma_fence_put(fence);
|
|
|
|
return 0;
|
|
|
|
err_out2:
|
|
lima_sched_task_fini(submit->task);
|
|
err_out1:
|
|
drm_gem_unlock_reservations((struct drm_gem_object **)bos,
|
|
submit->nr_bos, &ctx);
|
|
err_out0:
|
|
for (i = 0; i < submit->nr_bos; i++) {
|
|
if (!bos[i])
|
|
break;
|
|
lima_vm_bo_del(vm, bos[i]);
|
|
drm_gem_object_put_unlocked(&bos[i]->base.base);
|
|
}
|
|
if (out_sync)
|
|
drm_syncobj_put(out_sync);
|
|
return err;
|
|
}
|
|
|
|
int lima_gem_wait(struct drm_file *file, u32 handle, u32 op, s64 timeout_ns)
|
|
{
|
|
bool write = op & LIMA_GEM_WAIT_WRITE;
|
|
long ret, timeout;
|
|
|
|
if (!op)
|
|
return 0;
|
|
|
|
timeout = drm_timeout_abs_to_jiffies(timeout_ns);
|
|
|
|
ret = drm_gem_dma_resv_wait(file, handle, write, timeout);
|
|
if (ret == -ETIME)
|
|
ret = timeout ? -ETIMEDOUT : -EBUSY;
|
|
|
|
return ret;
|
|
}
|