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>
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index 5dab777..deb1d0c 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -678,7 +678,9 @@
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");