6 #define IDE_BASE 0xA05F7000
8 #define IDE_ALTSTATUS IDE_BASE+0x018
9 #define IDE_UNKNOWN IDE_BASE+0x01C
10 #define IDE_DATA IDE_BASE+0x080 /* 16 bits */
11 #define IDE_FEATURE IDE_BASE+0x084
12 #define IDE_COUNT IDE_BASE+0x088
13 #define IDE_LBA0 IDE_BASE+0x08C
14 #define IDE_LBA1 IDE_BASE+0x090
15 #define IDE_LBA2 IDE_BASE+0x094
16 #define IDE_DEVICE IDE_BASE+0x098
17 #define IDE_COMMAND IDE_BASE+0x09C
18 #define IDE_ACTIVATE IDE_BASE+0x4E4
20 #define IDE_DEVCONTROL IDE_ALTSTATUS
21 #define IDE_ERROR IDE_FEATURE
22 #define IDE_STATUS IDE_COMMAND
24 #define IDE_DMA_ADDR IDE_BASE+0x404
25 #define IDE_DMA_SIZE IDE_BASE+0x408
26 #define IDE_DMA_DIR IDE_BASE+0x40C
27 #define IDE_DMA_CTL1 IDE_BASE+0x414
28 #define IDE_DMA_CTL2 IDE_BASE+0x418
29 #define IDE_DMA_MAGIC IDE_BASE+0x4B8
30 #define IDE_DMA_STATUS IDE_BASE+0x4F8
32 #define DMA_BASE 0xFFA00000
33 #define DMA_SAR1 DMA_BASE+0x010
34 #define DMA_DAR1 DMA_BASE+0x014
35 #define DMA_TCR1 DMA_BASE+0x018
36 #define DMA_CHCR1 DMA_BASE+0x01C
37 #define DMA_SAR2 DMA_BASE+0x020
38 #define DMA_DAR2 DMA_BASE+0x024
39 #define DMA_TCR2 DMA_BASE+0x028
40 #define DMA_CHCR2 DMA_BASE+0x02C
41 #define DMA_SAR3 DMA_BASE+0x030
42 #define DMA_DAR3 DMA_BASE+0x034
43 #define DMA_TCR3 DMA_BASE+0x038
44 #define DMA_CHCR3 DMA_BASE+0x03C
45 #define DMA_DMAOR DMA_BASE+0x040
46 #define QUEUECR0 0xFF000038
47 #define QUEUECR1 0xFF00003C
49 #define IDE_CMD_RESET 0x08
50 #define IDE_CMD_PACKET 0xA0
51 #define IDE_CMD_IDENTIFY_PACKET_DEVICE 0xA1
52 #define IDE_CMD_IDENTIFY_DEVICE 0xEC
54 #define MMC_CMD_GET_CONFIGURATION 0x46
55 #define GD_CMD_IDENTIFY 0x11 /* guessing */
58 #define IDE_DMA_MAGIC_VALUE 0x8843407F
61 #define MAX_WAIT 10000000
62 #define MAX_IRQ_WAIT 1000000000
65 * Dump all ide registers to stdout.
67 void ide_dump_registers() {
69 printf( "IDE registers:\n");
70 printf( "Stats: %02X ", byte_read(IDE_ALTSTATUS) );
71 printf( "Error: %02X ", byte_read(IDE_ERROR) );
72 printf( "Count: %02X ", byte_read(IDE_COUNT) );
73 printf( "Dvice: %02X ", byte_read(IDE_DEVICE) );
74 if( long_read(ASIC_STATUS1)&1 ) {
77 if( (long_read(ASIC_STATUS0)>>14)&1 ) {
80 printf( "\nLBA 0: %02X ", byte_read(IDE_LBA0) );
81 printf( "LBA 1: %02X ", byte_read(IDE_LBA1) );
82 printf( "LBA 2: %02X ", byte_read(IDE_LBA2) );
83 printf( "0x01C: %02X\n", byte_read(IDE_UNKNOWN) );
84 printf( "DAddr: %08X ", long_read(IDE_DMA_ADDR) );
85 printf( "DSize: %08X ", long_read(IDE_DMA_SIZE) );
86 printf( "DDir : %08X ", long_read(IDE_DMA_DIR) );
87 printf( "DCtl1: %08X ", long_read(IDE_DMA_CTL1) );
88 printf( "DCtl2: %08X\n", long_read(IDE_DMA_CTL2) );
89 printf( "DStat: %08X\n", long_read(IDE_DMA_STATUS) );
91 for( i=0; i<12; i+=4 ) {
92 unsigned int val = long_read(ASIC_STATUS0+i);
93 for( j=0; j<32; j++ ) {
104 * Wait for the IDE INTRQ line to go active (bit 0 of the second word)
105 * @return 0 on success, non-zero on timeout
110 for( i=0; i<MAX_WAIT; i++ ) {
111 status = long_read( ASIC_STATUS1 );
112 if( (status&1) != 0 )
119 * Wait for the IDE BSY flag to be de-asserted.
120 * @return 0 on success, non-zero on timeout
122 int ide_wait_ready() {
123 unsigned char status;
125 for( i=0; i<MAX_WAIT; i++ ) {
126 status = byte_read(IDE_ALTSTATUS);
127 if( (status & 0x80) != 0x80 )
130 printf( "Timeout waiting for IDE to become ready\n" );
131 ide_dump_registers();
138 for( i=0; i<MAX_WAIT; i++ ) {
139 status = long_read(IDE_DMA_CTL2);
140 if( (status & 1) == 0 )
143 printf( "[IDE] Timeout waiting for DMA to become ready\n" );
148 * Write the command packet out to the interface.
149 * @param cmd 12 byte ATAPI command packet
150 * @param dma 1 = dma mode, 0 = pio mode
152 int ide_write_command_packet( char *cmd, int dma )
155 unsigned short *spkt = (unsigned short *)cmd;
156 unsigned short length = 8;
157 if( ide_wait_ready() )
159 byte_write( IDE_FEATURE, dma );
160 byte_write( IDE_COUNT, 0 );
161 byte_write( IDE_LBA0, 0 );
162 byte_write( IDE_LBA1, (length&0xFF) );
163 byte_write( IDE_LBA2, (length>>8)&0xFF );
164 byte_write( IDE_DEVICE, 0 );
165 byte_write( IDE_COMMAND, IDE_CMD_PACKET );
166 status = byte_read(IDE_ALTSTATUS); /* delay 1 PIO cycle as per spec */
167 printf( "After writing PACKET command byte:\n" );
168 ide_dump_registers();
169 /* Wait until device is ready to accept command */
170 if( ide_wait_ready() )
172 printf( "Device ready to receive packet:\n" );
173 ide_dump_registers();
175 /* Write the command */
176 for( i=0; i<6; i++ ) {
177 word_write( IDE_DATA, spkt[i] );
179 printf( "After writing command packet:\n" );
180 ide_dump_registers();
183 int ide_read_pio( char *buf, int buflen ) {
185 unsigned short *bufptr = (unsigned short *)buf;
186 unsigned int length = 0, avail;
190 if( ide_wait_ready() )
192 status = byte_read( IDE_STATUS );
193 if( (status & 0xE9) == 0x48 ) {
194 /* Bytes available */
195 avail = (byte_read( IDE_LBA1 )) | (byte_read(IDE_LBA2)<<8);
196 for( i=0; i<avail; i+=2 ) {
198 *bufptr++ = word_read(IDE_DATA);
204 /* Should never happen */
205 printf( "[IDE] Unexpected read length 0\n" );
210 printf( "[IDE] ERROR! (%02X)\n", status );
212 } else if( (status&0x08) == 0 ) {
216 printf( "[IDE] Unexpected status result: %02X\n", status );
223 int ide_read_dma( char *buf, int buflen )
227 long_write( IDE_DMA_CTL1, 1 );
228 long_write( IDE_DMA_CTL2, 1 );
230 printf( "Started DMA\n" );
231 ide_dump_registers();
234 printf( "After IRQ\n" );
235 ide_dump_registers();
236 long_write( IDE_DMA_CTL1, 0 );
237 status = ide_wait_dma();
238 printf( "After DMA finished\n");
239 ide_dump_registers();
243 status = long_read(ASIC_STATUS0);
244 if( (status & (1<<14)) == 0 ) {
245 printf( "DMARQ cleared already\n");
249 long_write(ASIC_STATUS0, status);
250 status = long_read(ASIC_STATUS0);
252 byte_read(IDE_STATUS );
253 if( (status & (1<<14)) == 0 ) {
254 printf( "DMARQ cleared successfully\n" );
256 printf( "DMARQ not cleared: %08X\n", long_read(ASIC_STATUS0) );
259 status = ide_wait_ready();
260 printf( "After IDE ready\n");
261 ide_dump_registers();
265 return long_read( IDE_DMA_STATUS );
268 int ide_do_packet_command_pio( char *cmd, char *buf, int length )
270 ide_write_command_packet( cmd, 0 );
271 length = ide_read_pio( buf, length );
275 int ide_do_packet_command_dma( char *cmd, char *buf, int length )
277 long_write( QUEUECR0, 0x10 );
278 long_write( QUEUECR1, 0x10 );
279 long_write( IDE_DMA_MAGIC, IDE_DMA_MAGIC_VALUE );
280 long_write( IDE_DMA_ADDR, (unsigned int)buf );
281 long_write( IDE_DMA_SIZE, length );
282 long_write( IDE_DMA_DIR, 1 );
283 ide_write_command_packet( cmd, 1 );
284 length = ide_read_dma( buf, length );
288 void ide_activate() {
289 register unsigned long p, x;
291 /* Reactivate GD-ROM drive */
293 *((volatile unsigned long *)0xa05f74e4) = 0x1fffff;
294 for(p=0; p<0x200000/4; p++)
295 x = ((volatile unsigned long *)0xa0000000)[p];
303 if( ide_wait_ready() )
306 /** Set Default PIO mode */
307 byte_write( IDE_FEATURE, 0x03 );
308 byte_write( IDE_COUNT, 0x0B );
309 byte_write( IDE_COMMAND, 0xEF );
311 if( ide_wait_ready() )
314 /** Set Multi-word DMA mode 2 */
315 long_write( 0xA05F7490, 0x222 );
316 long_write( 0xA05F7494, 0x222 );
317 byte_write( IDE_FEATURE, 0x03 );
318 byte_write( IDE_COUNT, 0x22 );
319 byte_write( IDE_COMMAND, 0xEF );
320 if( ide_wait_ready() )
323 word_write( 0xA05F7480, 0x400 );
324 long_write( 0xA05F7488, 0x200 );
325 long_write( 0xA05F748C, 0x200 );
326 long_write( 0xA05F74A0, 0x2001 );
327 long_write( 0xA05F74A4, 0x2001 );
328 long_write( 0xA05F74B4, 0x0001 );
331 int ide_sense_error( char *buf )
333 char cmd[12] = { 0x13,0,0,0, 10,0,0,0, 0,0,0,0 };
334 return ide_do_packet_command_pio( cmd, buf, 10 );
337 void ide_print_sense_error()
340 if( ide_sense_error(buf) != 10 ) {
341 printf( "ERROR - Sense error failed!\n" );
344 int major = buf[2] & 0xFF;
345 int minor = buf[8] & 0xFF;
346 printf( "[IDE] Error code %02X,%02X\n", major, minor );
351 char cmd[12] = { 0,0,0,0, 0,0,0,0, 0,0,0,0 };
352 int length = ide_do_packet_command_pio( cmd, NULL, 0 );
356 int ide_read_toc( char *buf, int length )
358 char cmd[12] = { 0x14,0,0,0, 0x98,0,0,0, 0,0,0,0 };
359 return ide_do_packet_command_pio( cmd, buf, length );
362 int ide_get_session( int session, struct gdrom_session *session_data )
364 char cmd[12] = {0x15, 0, session, 0, 6,0,0,0, 0,0,0,0 };
366 int length = ide_do_packet_command_pio( cmd, buf, sizeof(buf) );
372 session_data->track = ((int)buf[2])&0xFF;
373 session_data->lba = (((int)buf[3])&0xFF) << 16 |
374 (((int)buf[4])&0xFF) << 8 |
375 (((int)buf[5])&0xFF);
381 char cmd[12] = {0x70,0x1F,0,0, 0,0,0,0, 0,0,0,0};
382 int length = ide_do_packet_command_pio( cmd, NULL, 0 );
386 int ide_unknown71( char *buf, int length )
388 char cmd[12] = {0x71,0,0,0, 0,0,0,0, 0,0,0,0};
389 return ide_do_packet_command_pio( cmd, buf, length );
392 int ide_read_sector_pio( uint32_t sector, uint32_t count, int mode,
393 char *buf, int length )
395 char cmd[12] = { 0x30,0,0,0, 0,0,0,0, 0,0,0,0 };
398 cmd[2] = (sector>>16)&0xFF;
399 cmd[3] = (sector>>8)&0xFF;
400 cmd[4] = sector&0xFF;
401 cmd[8] = (count>>16)&0xFF;
402 cmd[9] = (count>>8)&0xFF;
403 cmd[10] = count&0xFF;
404 return ide_do_packet_command_pio( cmd, buf, length );
408 int ide_read_sector_dma( uint32_t sector, uint32_t count, int mode,
409 char *buf, int length )
411 char cmd[12] = { 0x30,0,0,0, 0,0,0,0, 0,0,0,0 };
414 cmd[2] = (sector>>16)&0xFF;
415 cmd[3] = (sector>>8)&0xFF;
416 cmd[4] = sector&0xFF;
417 cmd[8] = (count>>16)&0xFF;
418 cmd[9] = (count>>8)&0xFF;
419 cmd[10] = count&0xFF;
420 return ide_do_packet_command_dma( cmd, buf, length );
423 int ide_read_something( )
425 char cmd[12] = { 0x12,0,0,0, 0x0a,0,0,0, 0,0,0,0 };
427 ide_do_packet_command_pio( cmd, result, 10 );
431 int ide_read_status( char *buf, int length )
433 char cmd[12] = { 0x40,0,0,0, 0xFF,0,0,0, 0,0,0,0 };
435 return ide_do_packet_command_pio( cmd, buf, length );
438 int ide_play_cd( char *buf, int length )
440 char cmd[12] = { 0x21, 0x04,0,0, 0,0,0,0, 0,0,0,0 };
441 return ide_do_packet_command_pio( cmd, buf, length );
.