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annotate src/video/ps3/spulibs/fb_writer.c @ 4494:621dc91c7a04

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author Sam Lantinga <slouken@libsdl.org>
date Wed, 07 Jul 2010 23:26:07 -0700
parents 94fb40a4a9a7
children
rev   line source
3257
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1 /*
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2 * SDL - Simple DirectMedia Layer
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3 * CELL BE Support for PS3 Framebuffer
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4 * Copyright (C) 2008, 2009 International Business Machines Corporation
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5 *
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6 * This library is free software; you can redistribute it and/or modify it
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7 * under the terms of the GNU Lesser General Public License as published
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8 * by the Free Software Foundation; either version 2.1 of the License, or
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9 * (at your option) any later version.
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10 *
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11 * This library is distributed in the hope that it will be useful, but
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12 * WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 * Lesser General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU Lesser General Public
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17 * License along with this library; if not, write to the Free Software
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18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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19 * USA
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20 *
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21 * Martin Lowinski <lowinski [at] de [dot] ibm [ibm] com>
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22 * Dirk Herrendoerfer <d.herrendoerfer [at] de [dot] ibm [dot] com>
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23 * SPE code based on research by:
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24 * Rene Becker
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25 * Thimo Emmerich
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26 */
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27
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28 #include "spu_common.h"
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29
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30 #include <spu_intrinsics.h>
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31 #include <spu_mfcio.h>
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32 #include <stdio.h>
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33 #include <string.h>
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34
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35 // Debugging
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36 //#define DEBUG
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37
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38 #ifdef DEBUG
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39 #define deprintf(fmt, args... ) \
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40 fprintf( stdout, fmt, ##args ); \
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41 fflush( stdout );
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42 #else
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43 #define deprintf( fmt, args... )
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44 #endif
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45
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46 void cpy_to_fb(unsigned int);
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47
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48 /* fb_writer_spu parms */
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49 static volatile struct fb_writer_parms_t parms __attribute__ ((aligned(128)));
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50
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51 /* Code running on SPU */
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52 int main(unsigned long long spe_id __attribute__ ((unused)), unsigned long long argp __attribute__ ((unused)))
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53 {
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54 deprintf("[SPU] fb_writer_spu is up... (on SPE #%llu)\n", spe_id);
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55 uint32_t ea_mfc, mbox;
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56 // send ready message
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57 spu_write_out_mbox(SPU_READY);
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58
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59 while (1) {
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60 /* Check mailbox */
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61 mbox = spu_read_in_mbox();
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62 deprintf("[SPU] Message is %u\n", mbox);
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63 switch (mbox) {
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64 case SPU_EXIT:
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65 deprintf("[SPU] fb_writer goes down...\n");
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66 return 0;
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67 case SPU_START:
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68 break;
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69 default:
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70 deprintf("[SPU] Cannot handle message\n");
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71 continue;
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72 }
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73
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74 /* Tag Manager setup */
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75 unsigned int tags;
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76 tags = mfc_multi_tag_reserve(5);
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77 if (tags == MFC_TAG_INVALID) {
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78 deprintf("[SPU] Failed to reserve mfc tags on fb_writer\n");
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79 return 0;
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80 }
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81
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82 /* Framebuffer parms */
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83 ea_mfc = spu_read_in_mbox();
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84 deprintf("[SPU] Message on fb_writer is %u\n", ea_mfc);
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85 spu_mfcdma32(&parms, (unsigned int)ea_mfc,
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86 sizeof(struct fb_writer_parms_t), tags,
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87 MFC_GET_CMD);
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88 deprintf("[SPU] argp = %u\n", (unsigned int)argp);
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89 DMA_WAIT_TAG(tags);
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90
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91 /* Copy parms->data to framebuffer */
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92 deprintf("[SPU] Copying to framebuffer started\n");
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93 cpy_to_fb(tags);
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94 deprintf("[SPU] Copying to framebuffer done!\n");
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95
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96 mfc_multi_tag_release(tags, 5);
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97 deprintf("[SPU] fb_writer_spu... done!\n");
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98 /* Send FIN msg */
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99 spu_write_out_mbox(SPU_FIN);
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100 }
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101
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102 return 0;
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103 }
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104
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105 void cpy_to_fb(unsigned int tag_id_base)
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106 {
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107 unsigned int i;
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108 unsigned char current_buf;
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109 uint8_t *in = parms.data;
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110
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111 /* Align fb pointer which was centered before */
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112 uint8_t *fb =
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113 (unsigned char *)((unsigned int)parms.center & 0xFFFFFFF0);
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114
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115 uint32_t bounded_input_height = parms.bounded_input_height;
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116 uint32_t bounded_input_width = parms.bounded_input_width;
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117 uint32_t fb_pixel_size = parms.fb_pixel_size;
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118
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119 uint32_t out_line_stride = parms.out_line_stride;
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120 uint32_t in_line_stride = parms.in_line_stride;
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121 uint32_t in_line_size = bounded_input_width * fb_pixel_size;
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122
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123 current_buf = 0;
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124
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125 /* Local store buffer */
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126 static volatile uint8_t buf[4][BUFFER_SIZE]
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127 __attribute__ ((aligned(128)));
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128 /* do 4-times multibuffering using DMA list, process in two steps */
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129 for (i = 0; i < bounded_input_height >> 2; i++) {
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130 /* first buffer */
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131 DMA_WAIT_TAG(tag_id_base + 1);
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132 // retrieve buffer
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133 spu_mfcdma32(buf[0], (unsigned int)in, in_line_size,
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134 tag_id_base + 1, MFC_GETB_CMD);
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135 DMA_WAIT_TAG(tag_id_base + 1);
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136 // store buffer
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137 spu_mfcdma32(buf[0], (unsigned int)fb, in_line_size,
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138 tag_id_base + 1, MFC_PUTB_CMD);
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139 in += in_line_stride;
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140 fb += out_line_stride;
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141 deprintf("[SPU] 1st buffer copied in=0x%x, fb=0x%x\n", in,
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142 fb);
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143
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144 /* second buffer */
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145 DMA_WAIT_TAG(tag_id_base + 2);
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146 // retrieve buffer
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147 spu_mfcdma32(buf[1], (unsigned int)in, in_line_size,
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148 tag_id_base + 2, MFC_GETB_CMD);
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149 DMA_WAIT_TAG(tag_id_base + 2);
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150 // store buffer
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151 spu_mfcdma32(buf[1], (unsigned int)fb, in_line_size,
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152 tag_id_base + 2, MFC_PUTB_CMD);
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153 in += in_line_stride;
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154 fb += out_line_stride;
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155 deprintf("[SPU] 2nd buffer copied in=0x%x, fb=0x%x\n", in,
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156 fb);
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157
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158 /* third buffer */
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159 DMA_WAIT_TAG(tag_id_base + 3);
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160 // retrieve buffer
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161 spu_mfcdma32(buf[2], (unsigned int)in, in_line_size,
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162 tag_id_base + 3, MFC_GETB_CMD);
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163 DMA_WAIT_TAG(tag_id_base + 3);
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164 // store buffer
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165 spu_mfcdma32(buf[2], (unsigned int)fb, in_line_size,
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166 tag_id_base + 3, MFC_PUTB_CMD);
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167 in += in_line_stride;
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168 fb += out_line_stride;
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169 deprintf("[SPU] 3rd buffer copied in=0x%x, fb=0x%x\n", in,
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170 fb);
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171
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172 /* fourth buffer */
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173 DMA_WAIT_TAG(tag_id_base + 4);
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174 // retrieve buffer
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175 spu_mfcdma32(buf[3], (unsigned int)in, in_line_size,
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176 tag_id_base + 4, MFC_GETB_CMD);
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177 DMA_WAIT_TAG(tag_id_base + 4);
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178 // store buffer
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179 spu_mfcdma32(buf[3], (unsigned int)fb, in_line_size,
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180 tag_id_base + 4, MFC_PUTB_CMD);
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181 in += in_line_stride;
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182 fb += out_line_stride;
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183 deprintf("[SPU] 4th buffer copied in=0x%x, fb=0x%x\n", in,
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184 fb);
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185 deprintf("[SPU] Loop #%i, bounded_input_height=%i\n", i,
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186 bounded_input_height >> 2);
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187 }
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188 DMA_WAIT_TAG(tag_id_base + 2);
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189 DMA_WAIT_TAG(tag_id_base + 3);
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190 DMA_WAIT_TAG(tag_id_base + 4);
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191 }
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192
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193