[PATCH 4/6] drm/etnaviv: get cmdbuf physical address through the cmdbuf abstraction

[Lucas Stach]

Don't allow IOMMUv2 to peek directly into the cmdbuf, but get the
needed PA through a dedicated function.

Signed-off-by: Lucas Stach <l.st...@pengutronix.de>
---
 drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c   | 5 +++++
 drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.h   | 1 +
 drivers/gpu/drm/etnaviv/etnaviv_drv.c      | 3 ++-
 drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c | 3 ++-
 4 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c 
b/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c
index 155b1fddca8e..1ad118c6c64e 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c
@@ -57,3 +57,8 @@ u32 etnaviv_cmdbuf_get_va(struct etnaviv_cmdbuf *buf)
 {
        return etnaviv_iommu_get_cmdbuf_va(buf->gpu, buf);
 }
+
+dma_addr_t etnaviv_cmdbuf_get_pa(struct etnaviv_cmdbuf *buf)
+{
+       return buf->paddr;
+}
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.h 
b/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.h
index 6d64685cd3e7..244358778407 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.h
@@ -44,5 +44,6 @@ struct etnaviv_cmdbuf {
 };
 
 u32 etnaviv_cmdbuf_get_va(struct etnaviv_cmdbuf *buf);
+dma_addr_t etnaviv_cmdbuf_get_pa(struct etnaviv_cmdbuf *buf);
 
 #endif /* __ETNAVIV_CMDBUF_H__ */
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c 
b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
index 6b3ca97833e3..5b6decf85664 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
@@ -176,7 +176,8 @@ static void etnaviv_buffer_dump(struct etnaviv_gpu *gpu, 
struct seq_file *m)
        u32 i;
 
        seq_printf(m, "virt %p - phys 0x%llx - free 0x%08x\n",
-                       buf->vaddr, (u64)buf->paddr, size - buf->user_size);
+                       buf->vaddr, (u64)etnaviv_cmdbuf_get_pa(buf),
+                       size - buf->user_size);
 
        for (i = 0; i < size / 4; i++) {
                if (i && !(i % 4))
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c 
b/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c
index 4e68e6d75477..cbe447ac5974 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c
@@ -255,7 +255,8 @@ void etnaviv_iommuv2_restore(struct etnaviv_gpu *gpu)
        prefetch = etnaviv_buffer_config_mmuv2(gpu,
                                (u32)etnaviv_domain->mtlb_dma,
                                (u32)etnaviv_domain->bad_page_dma);
-       etnaviv_gpu_start_fe(gpu, gpu->buffer->paddr, prefetch);
+       etnaviv_gpu_start_fe(gpu, (u32)etnaviv_cmdbuf_get_pa(gpu->buffer),
+                            prefetch);
        etnaviv_gpu_wait_idle(gpu, 100);
 
        gpu_write(gpu, VIVS_MMUv2_CONTROL, VIVS_MMUv2_CONTROL_ENABLE);
-- 
2.11.0

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