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drm/etnaviv: only check if the cmdbuf is inside the linear window on MMUv1 

There is no linear window on MMUv2 and the FE can access the full 4GB
address space either directly (as long as the MMU isn't configured) or
through the MMU, once it is up.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
This commit is contained in:
Lucas Stach 2016-08-17 16:19:53 +02:00
parent 1486b1cb80
commit acfee0ec03
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/etnaviv/etnaviv_gpu.c
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@ -678,7 +678,9 @@ int etnaviv_gpu_init(struct etnaviv_gpu *gpu)
dev_err(gpu->dev, "could not create command buffer\n");
goto destroy_iommu;
}
if (gpu->buffer->paddr - gpu->memory_base > 0x80000000) {
if (gpu->mmu->version == ETNAVIV_IOMMU_V1 &&
gpu->buffer->paddr - gpu->memory_base > 0x80000000) {
ret = -EINVAL;
dev_err(gpu->dev,
"command buffer outside valid memory window\n");