drm/gem: rename GEM CMA helpers to GEM DMA helpers

Rename "GEM CMA" helpers to "GEM DMA" helpers - considering the
hierarchy of APIs (mm/cma -> dma -> gem dma) calling them "GEM
DMA" seems to be more applicable.

Besides that, commit e57924d4ae80 ("drm/doc: Task to rename CMA helpers")
requests to rename the CMA helpers and implies that people seem to be
confused about the naming.

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

```
	#!/bin/bash

	DIRS="drivers/gpu include/drm Documentation/gpu"

	REGEX_SYM_UPPER="[0-9A-Z_\-]"
	REGEX_SYM_LOWER="[0-9a-z_\-]"

	REGEX_GREP_UPPER="(${REGEX_SYM_UPPER}*)(GEM)_CMA_(${REGEX_SYM_UPPER}*)"
	REGEX_GREP_LOWER="(${REGEX_SYM_LOWER}*)(gem)_cma_(${REGEX_SYM_LOWER}*)"

	REGEX_SED_UPPER="s/${REGEX_GREP_UPPER}/\1\2_DMA_\3/g"
	REGEX_SED_LOWER="s/${REGEX_GREP_LOWER}/\1\2_dma_\3/g"

	# Find all upper case 'CMA' symbols and replace them with 'DMA'.
	for ff in $(grep -REHl "${REGEX_GREP_UPPER}" $DIRS)
	do
	       sed -i -E "$REGEX_SED_UPPER" $ff
	done

	# Find all lower case 'cma' symbols and replace them with 'dma'.
	for ff in $(grep -REHl "${REGEX_GREP_LOWER}" $DIRS)
	do
	       sed -i -E "$REGEX_SED_LOWER" $ff
	done

	# Replace all occurrences of 'CMA' / 'cma' in comments and
	# documentation files with 'DMA' / 'dma'.
	for ff in $(grep -RiHl " cma " $DIRS)
	do
		sed -i -E "s/ cma / dma /g" $ff
		sed -i -E "s/ CMA / DMA /g" $ff
	done

	# Rename all 'cma_obj's to 'dma_obj'.
	for ff in $(grep -RiHl "cma_obj" $DIRS)
	do
		sed -i -E "s/cma_obj/dma_obj/g" $ff
	done
```

Only a few more manual modifications were needed, e.g. reverting the
following modifications in some DRM Kconfig files

    -       select CMA if HAVE_DMA_CONTIGUOUS
    +       select DMA if HAVE_DMA_CONTIGUOUS

as well as manually picking the occurrences of 'CMA'/'cma' in comments and
documentation which relate to "GEM CMA", but not "FB CMA".

Also drivers/gpu/drm/Makefile was fixed up manually after renaming
drm_gem_cma_helper.c to drm_gem_dma_helper.c.

This patch is compile-time tested building a x86_64 kernel with
`make allyesconfig && make drivers/gpu/drm`.

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> #drivers/gpu/drm/arm
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220802000405.949236-4-dakr@redhat.com

1 files changed, 9 insertions, 9 deletions

diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h
index 1649350b9efd..418a8242691f 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.h
+++ b/drivers/gpu/drm/vc4/vc4_drv.h
@@ -14,7 +14,7 @@
 #include <drm/drm_debugfs.h>
 #include <drm/drm_device.h>
 #include <drm/drm_encoder.h>
-#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_managed.h>
 #include <drm/drm_mm.h>
 #include <drm/drm_modeset_lock.h>
@@ -239,7 +239,7 @@ to_vc4_dev(struct drm_device *dev)
 }
 
 struct vc4_bo {
-	struct drm_gem_cma_object base;
+	struct drm_gem_dma_object base;
 
 	/* seqno of the last job to render using this BO. */
 	uint64_t seqno;
@@ -288,7 +288,7 @@ struct vc4_bo {
 static inline struct vc4_bo *
 to_vc4_bo(struct drm_gem_object *bo)
 {
-	return container_of(to_drm_gem_cma_obj(bo), struct vc4_bo, base);
+	return container_of(to_drm_gem_dma_obj(bo), struct vc4_bo, base);
 }
 
 struct vc4_fence {
@@ -602,14 +602,14 @@ struct vc4_exec_info {
 	/* This is the array of BOs that were looked up at the start of exec.
 	 * Command validation will use indices into this array.
 	 */
-	struct drm_gem_cma_object **bo;
+	struct drm_gem_dma_object **bo;
 	uint32_t bo_count;
 
 	/* List of BOs that are being written by the RCL.  Other than
 	 * the binner temporary storage, this is all the BOs written
 	 * by the job.
 	 */
-	struct drm_gem_cma_object *rcl_write_bo[4];
+	struct drm_gem_dma_object *rcl_write_bo[4];
 	uint32_t rcl_write_bo_count;
 
 	/* Pointers for our position in vc4->job_list */
@@ -628,7 +628,7 @@ struct vc4_exec_info {
 	/* This is the BO where we store the validated command lists, shader
 	 * records, and uniforms.
 	 */
-	struct drm_gem_cma_object *exec_bo;
+	struct drm_gem_dma_object *exec_bo;
 
 	/**
 	 * This tracks the per-shader-record state (packet 64) that
@@ -989,19 +989,19 @@ vc4_validate_bin_cl(struct drm_device *dev,
 int
 vc4_validate_shader_recs(struct drm_device *dev, struct vc4_exec_info *exec);
 
-struct drm_gem_cma_object *vc4_use_bo(struct vc4_exec_info *exec,
+struct drm_gem_dma_object *vc4_use_bo(struct vc4_exec_info *exec,
 				      uint32_t hindex);
 
 int vc4_get_rcl(struct drm_device *dev, struct vc4_exec_info *exec);
 
 bool vc4_check_tex_size(struct vc4_exec_info *exec,
-			struct drm_gem_cma_object *fbo,
+			struct drm_gem_dma_object *fbo,
 			uint32_t offset, uint8_t tiling_format,
 			uint32_t width, uint32_t height, uint8_t cpp);
 
 /* vc4_validate_shader.c */
 struct vc4_validated_shader_info *
-vc4_validate_shader(struct drm_gem_cma_object *shader_obj);
+vc4_validate_shader(struct drm_gem_dma_object *shader_obj);
 
 /* vc4_perfmon.c */
 void vc4_perfmon_get(struct vc4_perfmon *perfmon);