drm/gem: rename struct drm_gem_dma_object.{paddr => dma_addr}

The field paddr of struct drm_gem_dma_object holds a DMA address, which
might actually be a physical address. However, depending on the platform,
it can also be a bus address or a virtual address managed by an IOMMU.

Hence, rename the field to dma_addr, which is more applicable.

In order to do this renaming the following coccinelle script was used:

```
	@@
	struct drm_gem_dma_object *gem;
	@@

	- gem->paddr
	+ gem->dma_addr

	@@
	struct drm_gem_dma_object gem;
	@@

	- gem.paddr
	+ gem.dma_addr

	@exists@
	typedef dma_addr_t;
	symbol paddr;
	@@

	dma_addr_t paddr;
	<...
	- paddr
	+ dma_addr
	...>

	@@
	symbol paddr;
	@@
	dma_addr_t
	- paddr
	+ dma_addr
	;

```

This patch is compile-time tested with:

```
	make ARCH={x86_64,arm,arm64} allyesconfig
	make ARCH={x86_64,arm,arm64} drivers/gpu/drm`
```

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220802000405.949236-5-dakr@redhat.com

1 files changed, 7 insertions, 7 deletions

diff --git a/drivers/gpu/drm/vc4/vc4_render_cl.c b/drivers/gpu/drm/vc4/vc4_render_cl.c
index c8a92023238c..1bda5010f15a 100644
--- a/drivers/gpu/drm/vc4/vc4_render_cl.c
+++ b/drivers/gpu/drm/vc4/vc4_render_cl.c
@@ -101,7 +101,7 @@ static uint32_t vc4_full_res_offset(struct vc4_exec_info *exec,
 				    struct drm_vc4_submit_rcl_surface *surf,
 				    uint8_t x, uint8_t y)
 {
-	return bo->paddr + surf->offset + VC4_TILE_BUFFER_SIZE *
+	return bo->dma_addr + surf->offset + VC4_TILE_BUFFER_SIZE *
 		(DIV_ROUND_UP(exec->args->width, 32) * y + x);
 }
 
@@ -142,7 +142,7 @@ static void emit_tile(struct vc4_exec_info *exec,
 		} else {
 			rcl_u8(setup, VC4_PACKET_LOAD_TILE_BUFFER_GENERAL);
 			rcl_u16(setup, args->color_read.bits);
-			rcl_u32(setup, setup->color_read->paddr +
+			rcl_u32(setup, setup->color_read->dma_addr +
 				args->color_read.offset);
 		}
 	}
@@ -164,7 +164,7 @@ static void emit_tile(struct vc4_exec_info *exec,
 		} else {
 			rcl_u8(setup, VC4_PACKET_LOAD_TILE_BUFFER_GENERAL);
 			rcl_u16(setup, args->zs_read.bits);
-			rcl_u32(setup, setup->zs_read->paddr +
+			rcl_u32(setup, setup->zs_read->dma_addr +
 				args->zs_read.offset);
 		}
 	}
@@ -232,7 +232,7 @@ static void emit_tile(struct vc4_exec_info *exec,
 			(last_tile_write ?
 			 0 : VC4_STORE_TILE_BUFFER_DISABLE_COLOR_CLEAR));
 		rcl_u32(setup,
-			(setup->zs_write->paddr + args->zs_write.offset) |
+			(setup->zs_write->dma_addr + args->zs_write.offset) |
 			((last && last_tile_write) ?
 			 VC4_LOADSTORE_TILE_BUFFER_EOF : 0));
 	}
@@ -355,7 +355,7 @@ static int vc4_create_rcl_bo(struct drm_device *dev, struct vc4_exec_info *exec,
 
 	rcl_u8(setup, VC4_PACKET_TILE_RENDERING_MODE_CONFIG);
 	rcl_u32(setup,
-		(setup->color_write ? (setup->color_write->paddr +
+		(setup->color_write ? (setup->color_write->dma_addr +
 				       args->color_write.offset) :
 		 0));
 	rcl_u16(setup, args->width);
@@ -374,8 +374,8 @@ static int vc4_create_rcl_bo(struct drm_device *dev, struct vc4_exec_info *exec,
 	}
 
 	BUG_ON(setup->next_offset != size);
-	exec->ct1ca = setup->rcl->paddr;
-	exec->ct1ea = setup->rcl->paddr + setup->next_offset;
+	exec->ct1ca = setup->rcl->dma_addr;
+	exec->ct1ea = setup->rcl->dma_addr + setup->next_offset;
 
 	return 0;
 }