Re: [PATCH 01/14] drm/ast: Move cursor functions to ast_cursor.c

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Hi Sam

Am 23.06.20 um 18:55 schrieb Sam Ravnborg:
> Hi Thomas.
> 
> On Tue, Jun 23, 2020 at 10:18:48AM +0200, Thomas Zimmermann wrote:
>> The cursor manipulation functions are unrelated to modesetting. Move
>> them into their own file.
>>
>> Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
>> ---
>>  drivers/gpu/drm/ast/Makefile     |   3 +-
>>  drivers/gpu/drm/ast/ast_cursor.c | 218 +++++++++++++++++++++++++++++++
>>  drivers/gpu/drm/ast/ast_drv.h    |   9 ++
>>  drivers/gpu/drm/ast/ast_mode.c   | 195 ---------------------------
>>  4 files changed, 229 insertions(+), 196 deletions(-)
>>  create mode 100644 drivers/gpu/drm/ast/ast_cursor.c
>>
>> diff --git a/drivers/gpu/drm/ast/Makefile b/drivers/gpu/drm/ast/Makefile
>> index 561f7c4199e4..6a5b3b247316 100644
>> --- a/drivers/gpu/drm/ast/Makefile
>> +++ b/drivers/gpu/drm/ast/Makefile
>> @@ -3,6 +3,7 @@
>>  # Makefile for the drm device driver.  This driver provides support for the
>>  # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
>>  
>> -ast-y := ast_drv.o ast_main.o ast_mode.o ast_ttm.o ast_post.o ast_dp501.o
>> +ast-y := ast_cursor.o ast_drv.o ast_main.o ast_mode.o ast_ttm.o ast_post.o \
>> +	 ast_dp501.o
>>  
>>  obj-$(CONFIG_DRM_AST) := ast.o
>> diff --git a/drivers/gpu/drm/ast/ast_cursor.c b/drivers/gpu/drm/ast/ast_cursor.c
>> new file mode 100644
>> index 000000000000..53bb6eebc7cd
>> --- /dev/null
>> +++ b/drivers/gpu/drm/ast/ast_cursor.c
>> @@ -0,0 +1,218 @@
>> +/*
>> + * Copyright 2012 Red Hat Inc.
>> + * Parts based on xf86-video-ast
>> + * Copyright (c) 2005 ASPEED Technology Inc.
>> + *
>> + * Permission is hereby granted, free of charge, to any person obtaining a
>> + * copy of this software and associated documentation files (the
>> + * "Software"), to deal in the Software without restriction, including
>> + * without limitation the rights to use, copy, modify, merge, publish,
>> + * distribute, sub license, and/or sell copies of the Software, and to
>> + * permit persons to whom the Software is furnished to do so, subject to
>> + * the following conditions:
>> + *
>> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
>> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
>> + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
>> + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
>> + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
>> + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
>> + * USE OR OTHER DEALINGS IN THE SOFTWARE.
>> + *
>> + * The above copyright notice and this permission notice (including the
>> + * next paragraph) shall be included in all copies or substantial portions
>> + * of the Software.
> 
> SPDX for new files?
> I guess this boilerplate was copied from the old file.

Yes, I copied the license text from the old file. I wasn't sure if I can
just add the SPDX tag. If that's not a problem, I'll add it in the next
iteration.

Best regards
Thomas

> 
> Acked-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
> 
>> + */
>> +/*
>> + * Authors: Dave Airlie <airlied@xxxxxxxxxx>
>> + */
>> +
>> +#include <drm/drm_gem_vram_helper.h>
>> +
>> +#include "ast_drv.h"
>> +
>> +/*
>> + * Allocate cursor BOs and pins them at the end of VRAM.
>> + */
>> +int ast_cursor_init(struct drm_device *dev)
>> +{
>> +	struct ast_private *ast = to_ast_private(dev);
>> +	size_t size, i;
>> +	struct drm_gem_vram_object *gbo;
>> +	int ret;
>> +
>> +	size = roundup(AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE, PAGE_SIZE);
>> +
>> +	for (i = 0; i < ARRAY_SIZE(ast->cursor.gbo); ++i) {
>> +		gbo = drm_gem_vram_create(dev, size, 0);
>> +		if (IS_ERR(gbo)) {
>> +			ret = PTR_ERR(gbo);
>> +			goto err_drm_gem_vram_put;
>> +		}
>> +		ret = drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM |
>> +					    DRM_GEM_VRAM_PL_FLAG_TOPDOWN);
>> +		if (ret) {
>> +			drm_gem_vram_put(gbo);
>> +			goto err_drm_gem_vram_put;
>> +		}
>> +
>> +		ast->cursor.gbo[i] = gbo;
>> +	}
>> +
>> +	return 0;
>> +
>> +err_drm_gem_vram_put:
>> +	while (i) {
>> +		--i;
>> +		gbo = ast->cursor.gbo[i];
>> +		drm_gem_vram_unpin(gbo);
>> +		drm_gem_vram_put(gbo);
>> +		ast->cursor.gbo[i] = NULL;
>> +	}
>> +	return ret;
>> +}
>> +
>> +void ast_cursor_fini(struct drm_device *dev)
>> +{
>> +	struct ast_private *ast = to_ast_private(dev);
>> +	size_t i;
>> +	struct drm_gem_vram_object *gbo;
>> +
>> +	for (i = 0; i < ARRAY_SIZE(ast->cursor.gbo); ++i) {
>> +		gbo = ast->cursor.gbo[i];
>> +		drm_gem_vram_unpin(gbo);
>> +		drm_gem_vram_put(gbo);
>> +	}
>> +}
>> +
>> +static u32 copy_cursor_image(u8 *src, u8 *dst, int width, int height)
>> +{
>> +	union {
>> +		u32 ul;
>> +		u8 b[4];
>> +	} srcdata32[2], data32;
>> +	union {
>> +		u16 us;
>> +		u8 b[2];
>> +	} data16;
>> +	u32 csum = 0;
>> +	s32 alpha_dst_delta, last_alpha_dst_delta;
>> +	u8 *srcxor, *dstxor;
>> +	int i, j;
>> +	u32 per_pixel_copy, two_pixel_copy;
>> +
>> +	alpha_dst_delta = AST_MAX_HWC_WIDTH << 1;
>> +	last_alpha_dst_delta = alpha_dst_delta - (width << 1);
>> +
>> +	srcxor = src;
>> +	dstxor = (u8 *)dst + last_alpha_dst_delta + (AST_MAX_HWC_HEIGHT - height) * alpha_dst_delta;
>> +	per_pixel_copy = width & 1;
>> +	two_pixel_copy = width >> 1;
>> +
>> +	for (j = 0; j < height; j++) {
>> +		for (i = 0; i < two_pixel_copy; i++) {
>> +			srcdata32[0].ul = *((u32 *)srcxor) & 0xf0f0f0f0;
>> +			srcdata32[1].ul = *((u32 *)(srcxor + 4)) & 0xf0f0f0f0;
>> +			data32.b[0] = srcdata32[0].b[1] | (srcdata32[0].b[0] >> 4);
>> +			data32.b[1] = srcdata32[0].b[3] | (srcdata32[0].b[2] >> 4);
>> +			data32.b[2] = srcdata32[1].b[1] | (srcdata32[1].b[0] >> 4);
>> +			data32.b[3] = srcdata32[1].b[3] | (srcdata32[1].b[2] >> 4);
>> +
>> +			writel(data32.ul, dstxor);
>> +			csum += data32.ul;
>> +
>> +			dstxor += 4;
>> +			srcxor += 8;
>> +
>> +		}
>> +
>> +		for (i = 0; i < per_pixel_copy; i++) {
>> +			srcdata32[0].ul = *((u32 *)srcxor) & 0xf0f0f0f0;
>> +			data16.b[0] = srcdata32[0].b[1] | (srcdata32[0].b[0] >> 4);
>> +			data16.b[1] = srcdata32[0].b[3] | (srcdata32[0].b[2] >> 4);
>> +			writew(data16.us, dstxor);
>> +			csum += (u32)data16.us;
>> +
>> +			dstxor += 2;
>> +			srcxor += 4;
>> +		}
>> +		dstxor += last_alpha_dst_delta;
>> +	}
>> +	return csum;
>> +}
>> +
>> +int ast_cursor_update(void *dst, void *src, unsigned int width,
>> +		      unsigned int height)
>> +{
>> +	u32 csum;
>> +
>> +	/* do data transfer to cursor cache */
>> +	csum = copy_cursor_image(src, dst, width, height);
>> +
>> +	/* write checksum + signature */
>> +	dst += AST_HWC_SIZE;
>> +	writel(csum, dst);
>> +	writel(width, dst + AST_HWC_SIGNATURE_SizeX);
>> +	writel(height, dst + AST_HWC_SIGNATURE_SizeY);
>> +	writel(0, dst + AST_HWC_SIGNATURE_HOTSPOTX);
>> +	writel(0, dst + AST_HWC_SIGNATURE_HOTSPOTY);
>> +
>> +	return 0;
>> +}
>> +
>> +void ast_cursor_set_base(struct ast_private *ast, u64 address)
>> +{
>> +	u8 addr0 = (address >> 3) & 0xff;
>> +	u8 addr1 = (address >> 11) & 0xff;
>> +	u8 addr2 = (address >> 19) & 0xff;
>> +
>> +	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc8, addr0);
>> +	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc9, addr1);
>> +	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xca, addr2);
>> +}
>> +
>> +int ast_cursor_move(struct drm_crtc *crtc, int x, int y)
>> +{
>> +	struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
>> +	struct ast_private *ast = to_ast_private(crtc->dev);
>> +	struct drm_gem_vram_object *gbo;
>> +	int x_offset, y_offset;
>> +	u8 *dst, *sig;
>> +	u8 jreg;
>> +
>> +	gbo = ast->cursor.gbo[ast->cursor.next_index];
>> +	dst = drm_gem_vram_vmap(gbo);
>> +	if (IS_ERR(dst))
>> +		return PTR_ERR(dst);
>> +
>> +	sig = dst + AST_HWC_SIZE;
>> +	writel(x, sig + AST_HWC_SIGNATURE_X);
>> +	writel(y, sig + AST_HWC_SIGNATURE_Y);
>> +
>> +	x_offset = ast_crtc->offset_x;
>> +	y_offset = ast_crtc->offset_y;
>> +	if (x < 0) {
>> +		x_offset = (-x) + ast_crtc->offset_x;
>> +		x = 0;
>> +	}
>> +
>> +	if (y < 0) {
>> +		y_offset = (-y) + ast_crtc->offset_y;
>> +		y = 0;
>> +	}
>> +	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc2, x_offset);
>> +	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc3, y_offset);
>> +	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc4, (x & 0xff));
>> +	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc5, ((x >> 8) & 0x0f));
>> +	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc6, (y & 0xff));
>> +	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc7, ((y >> 8) & 0x07));
>> +
>> +	/* dummy write to fire HWC */
>> +	jreg = 0x02 |
>> +	       0x01; /* enable ARGB4444 cursor */
>> +	ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xcb, 0xfc, jreg);
>> +
>> +	drm_gem_vram_vunmap(gbo, dst);
>> +
>> +	return 0;
>> +}
>> diff --git a/drivers/gpu/drm/ast/ast_drv.h b/drivers/gpu/drm/ast/ast_drv.h
>> index c44c1376c697..245ed2e2d775 100644
>> --- a/drivers/gpu/drm/ast/ast_drv.h
>> +++ b/drivers/gpu/drm/ast/ast_drv.h
>> @@ -314,4 +314,13 @@ bool ast_dp501_read_edid(struct drm_device *dev, u8 *ediddata);
>>  u8 ast_get_dp501_max_clk(struct drm_device *dev);
>>  void ast_init_3rdtx(struct drm_device *dev);
>>  void ast_release_firmware(struct drm_device *dev);
>> +
>> +/* ast_cursor.c */
>> +int ast_cursor_init(struct drm_device *dev);
>> +void ast_cursor_fini(struct drm_device *dev);
>> +int ast_cursor_update(void *dst, void *src, unsigned int width,
>> +		      unsigned int height);
>> +void ast_cursor_set_base(struct ast_private *ast, u64 address);
>> +int ast_cursor_move(struct drm_crtc *crtc, int x, int y);
>> +
>>  #endif
>> diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
>> index 510ffb497344..c8399699d773 100644
>> --- a/drivers/gpu/drm/ast/ast_mode.c
>> +++ b/drivers/gpu/drm/ast/ast_mode.c
>> @@ -47,16 +47,6 @@
>>  
>>  static struct ast_i2c_chan *ast_i2c_create(struct drm_device *dev);
>>  static void ast_i2c_destroy(struct ast_i2c_chan *i2c);
>> -static int ast_cursor_move(struct drm_crtc *crtc,
>> -			   int x, int y);
>> -
>> -
>> -static u32 copy_cursor_image(u8 *src, u8 *dst, int width, int height);
>> -static int ast_cursor_update(void *dst, void *src, unsigned int width,
>> -			     unsigned int height);
>> -static void ast_cursor_set_base(struct ast_private *ast, u64 address);
>> -static int ast_cursor_move(struct drm_crtc *crtc,
>> -			   int x, int y);
>>  
>>  static inline void ast_load_palette_index(struct ast_private *ast,
>>  				     u8 index, u8 red, u8 green,
>> @@ -1129,58 +1119,6 @@ static int ast_connector_init(struct drm_device *dev)
>>  	return 0;
>>  }
>>  
>> -/* allocate cursor cache and pin at start of VRAM */
>> -static int ast_cursor_init(struct drm_device *dev)
>> -{
>> -	struct ast_private *ast = to_ast_private(dev);
>> -	size_t size, i;
>> -	struct drm_gem_vram_object *gbo;
>> -	int ret;
>> -
>> -	size = roundup(AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE, PAGE_SIZE);
>> -
>> -	for (i = 0; i < ARRAY_SIZE(ast->cursor.gbo); ++i) {
>> -		gbo = drm_gem_vram_create(dev, size, 0);
>> -		if (IS_ERR(gbo)) {
>> -			ret = PTR_ERR(gbo);
>> -			goto err_drm_gem_vram_put;
>> -		}
>> -		ret = drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM |
>> -					    DRM_GEM_VRAM_PL_FLAG_TOPDOWN);
>> -		if (ret) {
>> -			drm_gem_vram_put(gbo);
>> -			goto err_drm_gem_vram_put;
>> -		}
>> -
>> -		ast->cursor.gbo[i] = gbo;
>> -	}
>> -
>> -	return 0;
>> -
>> -err_drm_gem_vram_put:
>> -	while (i) {
>> -		--i;
>> -		gbo = ast->cursor.gbo[i];
>> -		drm_gem_vram_unpin(gbo);
>> -		drm_gem_vram_put(gbo);
>> -		ast->cursor.gbo[i] = NULL;
>> -	}
>> -	return ret;
>> -}
>> -
>> -static void ast_cursor_fini(struct drm_device *dev)
>> -{
>> -	struct ast_private *ast = to_ast_private(dev);
>> -	size_t i;
>> -	struct drm_gem_vram_object *gbo;
>> -
>> -	for (i = 0; i < ARRAY_SIZE(ast->cursor.gbo); ++i) {
>> -		gbo = ast->cursor.gbo[i];
>> -		drm_gem_vram_unpin(gbo);
>> -		drm_gem_vram_put(gbo);
>> -	}
>> -}
>> -
>>  int ast_mode_init(struct drm_device *dev)
>>  {
>>  	struct ast_private *ast = to_ast_private(dev);
>> @@ -1344,136 +1282,3 @@ static void ast_i2c_destroy(struct ast_i2c_chan *i2c)
>>  	i2c_del_adapter(&i2c->adapter);
>>  	kfree(i2c);
>>  }
>> -
>> -static u32 copy_cursor_image(u8 *src, u8 *dst, int width, int height)
>> -{
>> -	union {
>> -		u32 ul;
>> -		u8 b[4];
>> -	} srcdata32[2], data32;
>> -	union {
>> -		u16 us;
>> -		u8 b[2];
>> -	} data16;
>> -	u32 csum = 0;
>> -	s32 alpha_dst_delta, last_alpha_dst_delta;
>> -	u8 *srcxor, *dstxor;
>> -	int i, j;
>> -	u32 per_pixel_copy, two_pixel_copy;
>> -
>> -	alpha_dst_delta = AST_MAX_HWC_WIDTH << 1;
>> -	last_alpha_dst_delta = alpha_dst_delta - (width << 1);
>> -
>> -	srcxor = src;
>> -	dstxor = (u8 *)dst + last_alpha_dst_delta + (AST_MAX_HWC_HEIGHT - height) * alpha_dst_delta;
>> -	per_pixel_copy = width & 1;
>> -	two_pixel_copy = width >> 1;
>> -
>> -	for (j = 0; j < height; j++) {
>> -		for (i = 0; i < two_pixel_copy; i++) {
>> -			srcdata32[0].ul = *((u32 *)srcxor) & 0xf0f0f0f0;
>> -			srcdata32[1].ul = *((u32 *)(srcxor + 4)) & 0xf0f0f0f0;
>> -			data32.b[0] = srcdata32[0].b[1] | (srcdata32[0].b[0] >> 4);
>> -			data32.b[1] = srcdata32[0].b[3] | (srcdata32[0].b[2] >> 4);
>> -			data32.b[2] = srcdata32[1].b[1] | (srcdata32[1].b[0] >> 4);
>> -			data32.b[3] = srcdata32[1].b[3] | (srcdata32[1].b[2] >> 4);
>> -
>> -			writel(data32.ul, dstxor);
>> -			csum += data32.ul;
>> -
>> -			dstxor += 4;
>> -			srcxor += 8;
>> -
>> -		}
>> -
>> -		for (i = 0; i < per_pixel_copy; i++) {
>> -			srcdata32[0].ul = *((u32 *)srcxor) & 0xf0f0f0f0;
>> -			data16.b[0] = srcdata32[0].b[1] | (srcdata32[0].b[0] >> 4);
>> -			data16.b[1] = srcdata32[0].b[3] | (srcdata32[0].b[2] >> 4);
>> -			writew(data16.us, dstxor);
>> -			csum += (u32)data16.us;
>> -
>> -			dstxor += 2;
>> -			srcxor += 4;
>> -		}
>> -		dstxor += last_alpha_dst_delta;
>> -	}
>> -	return csum;
>> -}
>> -
>> -static int ast_cursor_update(void *dst, void *src, unsigned int width,
>> -			     unsigned int height)
>> -{
>> -	u32 csum;
>> -
>> -	/* do data transfer to cursor cache */
>> -	csum = copy_cursor_image(src, dst, width, height);
>> -
>> -	/* write checksum + signature */
>> -	dst += AST_HWC_SIZE;
>> -	writel(csum, dst);
>> -	writel(width, dst + AST_HWC_SIGNATURE_SizeX);
>> -	writel(height, dst + AST_HWC_SIGNATURE_SizeY);
>> -	writel(0, dst + AST_HWC_SIGNATURE_HOTSPOTX);
>> -	writel(0, dst + AST_HWC_SIGNATURE_HOTSPOTY);
>> -
>> -	return 0;
>> -}
>> -
>> -static void ast_cursor_set_base(struct ast_private *ast, u64 address)
>> -{
>> -	u8 addr0 = (address >> 3) & 0xff;
>> -	u8 addr1 = (address >> 11) & 0xff;
>> -	u8 addr2 = (address >> 19) & 0xff;
>> -
>> -	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc8, addr0);
>> -	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc9, addr1);
>> -	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xca, addr2);
>> -}
>> -
>> -static int ast_cursor_move(struct drm_crtc *crtc,
>> -			   int x, int y)
>> -{
>> -	struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
>> -	struct ast_private *ast = to_ast_private(crtc->dev);
>> -	struct drm_gem_vram_object *gbo;
>> -	int x_offset, y_offset;
>> -	u8 *dst, *sig;
>> -	u8 jreg;
>> -
>> -	gbo = ast->cursor.gbo[ast->cursor.next_index];
>> -	dst = drm_gem_vram_vmap(gbo);
>> -	if (IS_ERR(dst))
>> -		return PTR_ERR(dst);
>> -
>> -	sig = dst + AST_HWC_SIZE;
>> -	writel(x, sig + AST_HWC_SIGNATURE_X);
>> -	writel(y, sig + AST_HWC_SIGNATURE_Y);
>> -
>> -	x_offset = ast_crtc->offset_x;
>> -	y_offset = ast_crtc->offset_y;
>> -	if (x < 0) {
>> -		x_offset = (-x) + ast_crtc->offset_x;
>> -		x = 0;
>> -	}
>> -
>> -	if (y < 0) {
>> -		y_offset = (-y) + ast_crtc->offset_y;
>> -		y = 0;
>> -	}
>> -	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc2, x_offset);
>> -	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc3, y_offset);
>> -	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc4, (x & 0xff));
>> -	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc5, ((x >> 8) & 0x0f));
>> -	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc6, (y & 0xff));
>> -	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc7, ((y >> 8) & 0x07));
>> -
>> -	/* dummy write to fire HWC */
>> -	jreg = 0x02 |
>> -	       0x01; /* enable ARGB4444 cursor */
>> -	ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xcb, 0xfc, jreg);
>> -
>> -	drm_gem_vram_vunmap(gbo, dst);
>> -
>> -	return 0;
>> -}
>> -- 
>> 2.27.0
>>
>> _______________________________________________
>> dri-devel mailing list
>> dri-devel@xxxxxxxxxxxxxxxxxxxxx
>> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer

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