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Message-ID: <202110060718.s10ZYLp1-lkp@intel.com>
Date: Wed, 6 Oct 2021 07:18:30 +0800
From: kernel test robot <lkp@...el.com>
To: Igor Matheus Andrade Torrente <igormtorrente@...il.com>,
rodrigosiqueiramelo@...il.com, melissa.srw@...il.com
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
Igor Matheus Andrade Torrente <igormtorrente@...il.com>,
hamohammed.sa@...il.com, daniel@...ll.ch, airlied@...ux.ie,
contact@...rsion.fr, leandro.ribeiro@...labora.com,
dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/6] drm: vkms: Refactor the plane composer to accept new
formats
Hi Igor,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linus/master]
[also build test WARNING on v5.15-rc3 next-20210922]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Igor-Matheus-Andrade-Torrente/Refactor-the-vkms-to-accept-new-formats/20211006-042037
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 02d5e016800d082058b3d3b7c3ede136cdc6ddcb
config: x86_64-randconfig-a003-20211004 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c0039de2953d15815448b4b3c3bafb45607781e0)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/0day-ci/linux/commit/9cd34ac9858091dc06086b2024e8f5f111657d48
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Igor-Matheus-Andrade-Torrente/Refactor-the-vkms-to-accept-new-formats/20211006-042037
git checkout 9cd34ac9858091dc06086b2024e8f5f111657d48
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
In file included from drivers/gpu/drm/vkms/vkms_composer.c:12:
>> drivers/gpu/drm/vkms/vkms_formats.h:24:7: warning: no previous prototype for function 'packed_pixels_addr' [-Wmissing-prototypes]
void *packed_pixels_addr(struct vkms_composer *composer, int x, int y)
^
drivers/gpu/drm/vkms/vkms_formats.h:24:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void *packed_pixels_addr(struct vkms_composer *composer, int x, int y)
^
static
>> drivers/gpu/drm/vkms/vkms_formats.h:31:5: warning: no previous prototype for function 'ARGB8888_to_ARGB16161616' [-Wmissing-prototypes]
u64 ARGB8888_to_ARGB16161616(struct vkms_composer *composer, int x, int y)
^
drivers/gpu/drm/vkms/vkms_formats.h:31:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
u64 ARGB8888_to_ARGB16161616(struct vkms_composer *composer, int x, int y)
^
static
>> drivers/gpu/drm/vkms/vkms_formats.h:49:5: warning: no previous prototype for function 'XRGB8888_to_ARGB16161616' [-Wmissing-prototypes]
u64 XRGB8888_to_ARGB16161616(struct vkms_composer *composer, int x, int y)
^
drivers/gpu/drm/vkms/vkms_formats.h:49:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
u64 XRGB8888_to_ARGB16161616(struct vkms_composer *composer, int x, int y)
^
static
>> drivers/gpu/drm/vkms/vkms_formats.h:63:5: warning: no previous prototype for function 'get_ARGB16161616' [-Wmissing-prototypes]
u64 get_ARGB16161616(struct vkms_composer *composer, int x, int y)
^
drivers/gpu/drm/vkms/vkms_formats.h:63:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
u64 get_ARGB16161616(struct vkms_composer *composer, int x, int y)
^
static
>> drivers/gpu/drm/vkms/vkms_formats.h:85:6: warning: no previous prototype for function 'convert_to_ARGB8888' [-Wmissing-prototypes]
void convert_to_ARGB8888(u64 argb_src1, u64 argb_src2, int x, int y,
^
drivers/gpu/drm/vkms/vkms_formats.h:85:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void convert_to_ARGB8888(u64 argb_src1, u64 argb_src2, int x, int y,
^
static
>> drivers/gpu/drm/vkms/vkms_formats.h:106:6: warning: no previous prototype for function 'convert_to_XRGB8888' [-Wmissing-prototypes]
void convert_to_XRGB8888(u64 argb_src1, u64 argb_src2, int x, int y,
^
drivers/gpu/drm/vkms/vkms_formats.h:106:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void convert_to_XRGB8888(u64 argb_src1, u64 argb_src2, int x, int y,
^
static
>> drivers/gpu/drm/vkms/vkms_formats.h:117:6: warning: no previous prototype for function 'convert_to_ARGB16161616' [-Wmissing-prototypes]
void convert_to_ARGB16161616(u64 argb_src1, u64 argb_src2, int x, int y,
^
drivers/gpu/drm/vkms/vkms_formats.h:117:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void convert_to_ARGB16161616(u64 argb_src1, u64 argb_src2, int x, int y,
^
static
7 warnings generated.
vim +/packed_pixels_addr +24 drivers/gpu/drm/vkms/vkms_formats.h
7
8 #define pixel_offset(composer, x, y) \
9 ((composer)->offset + ((y) * (composer)->pitch) + ((x) * (composer)->cpp))
10
11 /*
12 * packed_pixels_addr - Get the pointer to pixel of a given pair of coordinates
13 *
14 * @composer: Buffer metadata
15 * @x: The x(width) coordinate of the 2D buffer
16 * @y: The y(Heigth) coordinate of the 2D buffer
17 *
18 * Takes the information stored in the composer, a pair of coordinates, and
19 * returns the address of the first color channel.
20 * This function assumes the channels are packed together, i.e. a color channel
21 * comes immediately after another. And therefore, this function doesn't work
22 * for YUV with chroma subsampling (e.g. YUV420 and NV21).
23 */
> 24 void *packed_pixels_addr(struct vkms_composer *composer, int x, int y)
25 {
26 int offset = pixel_offset(composer, x, y);
27
28 return (u8 *)composer->map[0].vaddr + offset;
29 }
30
> 31 u64 ARGB8888_to_ARGB16161616(struct vkms_composer *composer, int x, int y)
32 {
33 u8 *pixel_addr = packed_pixels_addr(composer, x, y);
34
35 /*
36 * Organizes the channels in their respective positions and converts
37 * the 8 bits channel to 16.
38 * The 257 is the "conversion ratio". This number is obtained by the
39 * (2^16 - 1) / (2^8 - 1) division. Which, in this case, tries to get
40 * the best color value in a color space with more possibilities.
41 * And a similar idea applies to others RGB color conversions.
42 */
43 return ((u64)pixel_addr[3] * 257) << 48 |
44 ((u64)pixel_addr[2] * 257) << 32 |
45 ((u64)pixel_addr[1] * 257) << 16 |
46 ((u64)pixel_addr[0] * 257);
47 }
48
> 49 u64 XRGB8888_to_ARGB16161616(struct vkms_composer *composer, int x, int y)
50 {
51 u8 *pixel_addr = packed_pixels_addr(composer, x, y);
52
53 /*
54 * The same as the ARGB8888 but with the alpha channel as the
55 * maximum value as possible.
56 */
57 return 0xffffllu << 48 |
58 ((u64)pixel_addr[2] * 257) << 32 |
59 ((u64)pixel_addr[1] * 257) << 16 |
60 ((u64)pixel_addr[0] * 257);
61 }
62
> 63 u64 get_ARGB16161616(struct vkms_composer *composer, int x, int y)
64 {
65 __le64 *pixel_addr = packed_pixels_addr(composer, x, y);
66
67 /*
68 * Because the format byte order is in little-endian and this code
69 * needs to run on big-endian machines too, we need modify
70 * the byte order from little-endian to the CPU native byte order.
71 */
72 return le64_to_cpu(*pixel_addr);
73 }
74
75 /*
76 * The following functions are used as blend operations. But unlike the
77 * `alpha_blend`, these functions take an ARGB16161616 pixel from the
78 * source, convert it to a specific format, and store it in the destination.
79 *
80 * They are used in the `compose_active_planes` and `write_wb_buffer` to
81 * copy and convert one pixel from/to the output buffer to/from
82 * another buffer (e.g. writeback buffer, primary plane buffer).
83 */
84
> 85 void convert_to_ARGB8888(u64 argb_src1, u64 argb_src2, int x, int y,
86 struct vkms_composer *dst_composer)
87 {
88 u8 *pixel_addr = packed_pixels_addr(dst_composer, x, y);
89
90 /*
91 * This sequence below is important because the format's byte order is
92 * in little-endian. In the case of the ARGB8888 the memory is
93 * organized this way:
94 *
95 * | Addr | = blue channel
96 * | Addr + 1 | = green channel
97 * | Addr + 2 | = Red channel
98 * | Addr + 3 | = Alpha channel
99 */
100 pixel_addr[0] = DIV_ROUND_UP(argb_src1 & 0xffffllu, 257);
101 pixel_addr[1] = DIV_ROUND_UP((argb_src1 & (0xffffllu << 16)) >> 16, 257);
102 pixel_addr[2] = DIV_ROUND_UP((argb_src1 & (0xffffllu << 32)) >> 32, 257);
103 pixel_addr[3] = DIV_ROUND_UP((argb_src1 & (0xffffllu << 48)) >> 48, 257);
104 }
105
> 106 void convert_to_XRGB8888(u64 argb_src1, u64 argb_src2, int x, int y,
107 struct vkms_composer *dst_composer)
108 {
109 u8 *pixel_addr = packed_pixels_addr(dst_composer, x, y);
110
111 pixel_addr[0] = DIV_ROUND_UP(argb_src1 & 0xffffllu, 257);
112 pixel_addr[1] = DIV_ROUND_UP((argb_src1 & (0xffffllu << 16)) >> 16, 257);
113 pixel_addr[2] = DIV_ROUND_UP((argb_src1 & (0xffffllu << 32)) >> 32, 257);
114 pixel_addr[3] = 0xff;
115 }
116
> 117 void convert_to_ARGB16161616(u64 argb_src1, u64 argb_src2, int x, int y,
118 struct vkms_composer *dst_composer)
119 {
120 __le64 *pixel_addr = packed_pixels_addr(dst_composer, x, y);
121
122 *pixel_addr = cpu_to_le64(argb_src1);
123 }
124
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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