6 * Copyright (c) 2006 Nathan Keynes.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
22 #define DMA_BASE 0xFFA00000
24 #define DMA_SAR(c) (DMA_BASE+0x00+(c<<4))
25 #define DMA_DAR(c) (DMA_BASE+0x04+(c<<4))
26 #define DMA_TCR(c) (DMA_BASE+0x08+(c<<4))
27 #define DMA_CHCR(c) (DMA_BASE+0x0C+(c<<4))
28 #define DMA_OR (DMA_BASE+0x40)
30 #define ASIC_BASE 0xA05F6000
31 #define PVR_DMA_DEST (ASIC_BASE+0x800)
32 #define PVR_DMA_COUNT (ASIC_BASE+0x804)
33 #define PVR_DMA_CTL (ASIC_BASE+0x808)
34 #define PVR_DMA_REGION (ASIC_BASE+0x884)
36 #define SORT_DMA_TABLE (ASIC_BASE+0x810)
37 #define SORT_DMA_DATA (ASIC_BASE+0x814)
38 #define SORT_DMA_TABLEBITS (ASIC_BASE+0x818)
39 #define SORT_DMA_DATASIZE (ASIC_BASE+0x81C)
40 #define SORT_DMA_CTL (ASIC_BASE+0x820)
41 #define SORT_DMA_COUNT (ASIC_BASE+0x860)
43 #define G2BASERAM 0x00800000
45 #define G2DMABASE 0xA05F7800
46 #define G2DMATIMEOUT (G2DMABASE+0x90)
47 #define G2DMAMAGIC (G2DMABASE+0xBC)
48 #define G2DMAEXT(x) (G2DMABASE+(0x20*(x)))
49 #define G2DMAHOST(x) (G2DMABASE+(0x20*(x))+0x04)
50 #define G2DMASIZE(x) (G2DMABASE+(0x20*(x))+0x08)
51 #define G2DMADIR(x) (G2DMABASE+(0x20*(x))+0x0C)
52 #define G2DMAMODE(x) (G2DMABASE+(0x20*(x))+0x10)
53 #define G2DMACTL1(x) (G2DMABASE+(0x20*(x))+0x14)
54 #define G2DMACTL2(x) (G2DMABASE+(0x20*(x))+0x18)
55 #define G2DMASTOP(x) (G2DMABASE+(0x20*(x))+0x1C)
57 void dmac_dump_channel( FILE *f, unsigned int channel )
59 fprintf( f, "DMAC SAR: %08X Count: %08X Ctl: %08X OR: %08X\n",
60 long_read(DMA_SAR(channel)), long_read(DMA_TCR(channel)),
61 long_read(DMA_CHCR(channel)), long_read(DMA_OR) );
66 * Setup the DMAC for a transfer. Assumes 32-byte block transfer.
67 * Caller is responsible for making sure no-one else is using the
70 * @param channel DMA channel to use, 0 to 3
71 * @param source source address (if a memory source)
72 * @param dest destination address (if a memory destination)
73 * @param length number of bytes to transfer (must be a multiple of
75 * @param direction 0 = host to device, 1 = device to host
77 void dmac_prepare_channel( int channel, uint32_t source, uint32_t dest,
78 uint32_t length, int direction )
82 if( direction == 0 ) {
83 /* DMA Disabled, IRQ disabled, 32 byte transfer, burst mode,
84 * Memory => Device, Source addr increment, dest addr fixed
88 /* DMA Disabled, IRQ disabled, 32 byte transfer, burst mode,
89 * Device => Memory, Source addr fixed, dest addr increment
93 long_write( DMA_CHCR(channel), control );
94 long_write( DMA_SAR(channel), source );
95 long_write( DMA_DAR(channel), dest );
96 long_write( DMA_TCR(channel), (length >> 5) );
98 long_write( DMA_CHCR(channel), control ); /* Enable DMA channel */
99 long_write( DMA_OR, 0x8201 ); /* Ensure the DMAC config is set */
103 int pvr_dma_write( unsigned int target, char *buf, int len, int region )
105 uint32_t addr =(uint32_t)buf;
107 if( (addr & 0xFFFFFFE0) != addr ) {
108 fprintf( stderr, "Address error: Attempting DMA from %08X\n", addr );
111 long_write( PVR_DMA_CTL, 0 ); /* Stop PVR dma if it's already running */
114 dmac_prepare_channel( 2, (uint32_t)buf, 0, len, 0 ); /* Allocate channel 2 */
115 long_write( PVR_DMA_DEST, target );
116 long_write( PVR_DMA_COUNT, len );
117 long_write( PVR_DMA_REGION, region );
119 CHECK_IEQUALS( target, long_read(PVR_DMA_DEST) );
120 CHECK_IEQUALS( len, long_read(PVR_DMA_COUNT) );
121 CHECK_IEQUALS( 0, long_read(PVR_DMA_REGION) );
122 CHECK_IEQUALS( (uint32_t)buf, long_read(DMA_SAR(2)) );
123 CHECK_IEQUALS( len/32, long_read(DMA_TCR(2)) );
124 CHECK_IEQUALS( 0x12C1, long_read(DMA_CHCR(2)) );
126 long_write( PVR_DMA_CTL, 1 );
127 result = asic_wait(EVENT_PVR_DMA);
130 fprintf( stderr, "PVR DMA failed (timeout)\n" );
132 fprintf( stderr, "Dest: %08X Count: %08X Ctl: %08X\n", long_read(PVR_DMA_DEST),
133 long_read(PVR_DMA_COUNT), long_read(PVR_DMA_CTL) );
134 dmac_dump_channel(stderr, 2);
135 long_write( PVR_DMA_CTL, 0 );
138 CHECK_IEQUALS( 0, long_read(PVR_DMA_CTL) );
139 CHECK_IEQUALS( ((uint32_t)buf)+len, long_read(DMA_SAR(2)) );
140 CHECK_IEQUALS( 0, long_read(DMA_TCR(2)) );
141 CHECK_IEQUALS( 0x12C3, long_read(DMA_CHCR(2)) );
142 CHECK_IEQUALS( target, long_read(PVR_DMA_DEST) );
143 CHECK_IEQUALS( 0, long_read(PVR_DMA_COUNT) );
144 CHECK_IEQUALS( 0, long_read(PVR_DMA_REGION) );
149 int sort_dma_write( char *sorttable, int tablelen, char *data, int datalen, int bitwidth, int datasize )
152 uint32_t tableaddr = (uint32_t)sorttable;
153 uint32_t dataaddr = (uint32_t)data;
155 long_write( SORT_DMA_CTL, 0 );
158 long_write( SORT_DMA_TABLE, tableaddr );
159 long_write( SORT_DMA_DATA, dataaddr );
160 long_write( SORT_DMA_TABLEBITS, bitwidth );
161 long_write( SORT_DMA_DATASIZE, datasize );
162 long_write( SORT_DMA_CTL, 1 );
163 result = asic_wait2(EVENT_SORT_DMA, EVENT_SORT_DMA_ERR);
165 fprintf( stderr, "SORT DMA failed (timeout)\n" );
167 fprintf( stderr, "Table: %08X Count: %08X Ctl: %08X\n", long_read(SORT_DMA_TABLE), long_read(SORT_DMA_COUNT),
168 long_read(SORT_DMA_CTL) );
169 long_write( SORT_DMA_CTL, 0 );
171 CHECK_IEQUALS( 0, long_read(SORT_DMA_CTL) );
175 int aica_dma_transfer( uint32_t aica_addr, char *data, uint32_t size, int writeFlag )
177 long_write( G2DMATIMEOUT, 0 );
178 long_write( G2DMAMAGIC, 0x4659404f );
179 long_write( G2DMACTL1(0), 0 );
180 long_write( G2DMAEXT(0), aica_addr );
181 long_write( G2DMAHOST(0), ((uint32_t)data) );
182 long_write( G2DMASIZE(0), ((size+31)&0x7FFFFFE0) | 0x80000000 );
183 long_write( G2DMADIR(0), (writeFlag ? 0 : 1) );
184 long_write( G2DMAMODE(0), 0 );
186 long_write( G2DMACTL1(0), 1 );
187 long_write( G2DMACTL2(0), 1 );
188 if( asic_wait( EVENT_G2_DMA0 ) != 0 ) {
189 fprintf( stderr, "Timeout waiting for G2 DMA event\n" );
192 // CHECK_IEQUALS( 0, long_read( G2DMACTL1(0) ) );
193 CHECK_IEQUALS( 0, long_read( G2DMACTL2(0) ) );
197 int aica_dma_write( uint32_t aica_addr, char *data, uint32_t size )
199 return aica_dma_transfer( aica_addr, data, size, 1 );
202 int aica_dma_read( char *data, uint32_t aica_addr, uint32_t size )
204 return aica_dma_transfer( aica_addr, data, size, 0 );
.