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drm/lima: always set page directory when switch vm

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We need to flush TLB anyway before every task start, and the
page directory will be set to empty vm after suspend/resume,
so always set it to the task vm even no ctx switch happens.

Tested-by: Bhushan Shah <bshah@kde.org>
Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200421133551.31481-5-yuq825@gmail.com
This commit is contained in:
Qiang Yu 2020-04-21 21:35:45 +08:00
parent 24943269e5
commit 4eb70cd3f2
2 changed files with 5 additions and 12 deletions
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3
drivers/gpu/drm/lima/lima_mmu.c
View File

@ -113,8 +113,7 @@ void lima_mmu_switch_vm(struct lima_ip *ip, struct lima_vm *vm)
LIMA_MMU_STATUS, v,
v & LIMA_MMU_STATUS_STALL_ACTIVE);
if (vm)
mmu_write(LIMA_MMU_DTE_ADDR, vm->pd.dma);
mmu_write(LIMA_MMU_DTE_ADDR, vm->pd.dma);
/* flush the TLB */
mmu_write(LIMA_MMU_COMMAND, LIMA_MMU_COMMAND_ZAP_CACHE);

14
drivers/gpu/drm/lima/lima_sched.c
View File

@ -200,7 +200,6 @@ static struct dma_fence *lima_sched_run_job(struct drm_sched_job *job)
struct lima_sched_pipe *pipe = to_lima_pipe(job->sched);
struct lima_fence *fence;
struct dma_fence *ret;
struct lima_vm *vm = NULL, *last_vm = NULL;
int i;
/* after GPU reset */
@ -239,21 +238,16 @@ static struct dma_fence *lima_sched_run_job(struct drm_sched_job *job)
for (i = 0; i < pipe->num_l2_cache; i++)
lima_l2_cache_flush(pipe->l2_cache[i]);
if (task->vm != pipe->current_vm) {
vm = lima_vm_get(task->vm);
last_vm = pipe->current_vm;
pipe->current_vm = task->vm;
}
lima_vm_put(pipe->current_vm);
pipe->current_vm = lima_vm_get(task->vm);
if (pipe->bcast_mmu)
lima_mmu_switch_vm(pipe->bcast_mmu, vm);
lima_mmu_switch_vm(pipe->bcast_mmu, pipe->current_vm);
else {
for (i = 0; i < pipe->num_mmu; i++)
lima_mmu_switch_vm(pipe->mmu[i], vm);
lima_mmu_switch_vm(pipe->mmu[i], pipe->current_vm);
}
lima_vm_put(last_vm);
trace_lima_task_run(task);
pipe->error = false;