Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Patch routines for the emu8000 (AWE32/64) |
| 3 | * |
| 4 | * Copyright (C) 1999 Steve Ratcliffe |
| 5 | * Copyright (C) 1999-2000 Takashi Iwai <tiwai@suse.de> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | */ |
| 21 | |
| 22 | #include "emu8000_local.h" |
| 23 | #include <asm/uaccess.h> |
| 24 | #include <linux/moduleparam.h> |
Paul Gortmaker | 31623ca | 2011-08-31 17:02:47 -0400 | [diff] [blame^] | 25 | #include <linux/moduleparam.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | |
Takashi Iwai | 6581f4e | 2006-05-17 17:14:51 +0200 | [diff] [blame] | 27 | static int emu8000_reset_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | module_param(emu8000_reset_addr, int, 0444); |
| 29 | MODULE_PARM_DESC(emu8000_reset_addr, "reset write address at each time (makes slowdown)"); |
| 30 | |
| 31 | |
| 32 | /* |
| 33 | * Open up channels. |
| 34 | */ |
| 35 | static int |
Takashi Iwai | 029d64b | 2005-11-17 14:34:36 +0100 | [diff] [blame] | 36 | snd_emu8000_open_dma(struct snd_emu8000 *emu, int write) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | { |
| 38 | int i; |
| 39 | |
| 40 | /* reserve all 30 voices for loading */ |
| 41 | for (i = 0; i < EMU8000_DRAM_VOICES; i++) { |
| 42 | snd_emux_lock_voice(emu->emu, i); |
| 43 | snd_emu8000_dma_chan(emu, i, write); |
| 44 | } |
| 45 | |
| 46 | /* assign voice 31 and 32 to ROM */ |
| 47 | EMU8000_VTFT_WRITE(emu, 30, 0); |
| 48 | EMU8000_PSST_WRITE(emu, 30, 0x1d8); |
| 49 | EMU8000_CSL_WRITE(emu, 30, 0x1e0); |
| 50 | EMU8000_CCCA_WRITE(emu, 30, 0x1d8); |
| 51 | EMU8000_VTFT_WRITE(emu, 31, 0); |
| 52 | EMU8000_PSST_WRITE(emu, 31, 0x1d8); |
| 53 | EMU8000_CSL_WRITE(emu, 31, 0x1e0); |
| 54 | EMU8000_CCCA_WRITE(emu, 31, 0x1d8); |
| 55 | |
| 56 | return 0; |
| 57 | } |
| 58 | |
| 59 | /* |
| 60 | * Close all dram channels. |
| 61 | */ |
| 62 | static void |
Takashi Iwai | 029d64b | 2005-11-17 14:34:36 +0100 | [diff] [blame] | 63 | snd_emu8000_close_dma(struct snd_emu8000 *emu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | { |
| 65 | int i; |
| 66 | |
| 67 | for (i = 0; i < EMU8000_DRAM_VOICES; i++) { |
| 68 | snd_emu8000_dma_chan(emu, i, EMU8000_RAM_CLOSE); |
| 69 | snd_emux_unlock_voice(emu->emu, i); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | /* |
| 74 | */ |
| 75 | |
| 76 | #define BLANK_LOOP_START 4 |
| 77 | #define BLANK_LOOP_END 8 |
| 78 | #define BLANK_LOOP_SIZE 12 |
| 79 | #define BLANK_HEAD_SIZE 48 |
| 80 | |
| 81 | /* |
| 82 | * Read a word from userland, taking care of conversions from |
| 83 | * 8bit samples etc. |
| 84 | */ |
| 85 | static unsigned short |
| 86 | read_word(const void __user *buf, int offset, int mode) |
| 87 | { |
| 88 | unsigned short c; |
| 89 | if (mode & SNDRV_SFNT_SAMPLE_8BITS) { |
| 90 | unsigned char cc; |
| 91 | get_user(cc, (unsigned char __user *)buf + offset); |
| 92 | c = cc << 8; /* convert 8bit -> 16bit */ |
| 93 | } else { |
| 94 | #ifdef SNDRV_LITTLE_ENDIAN |
| 95 | get_user(c, (unsigned short __user *)buf + offset); |
| 96 | #else |
| 97 | unsigned short cc; |
| 98 | get_user(cc, (unsigned short __user *)buf + offset); |
| 99 | c = swab16(cc); |
| 100 | #endif |
| 101 | } |
| 102 | if (mode & SNDRV_SFNT_SAMPLE_UNSIGNED) |
| 103 | c ^= 0x8000; /* unsigned -> signed */ |
| 104 | return c; |
| 105 | } |
| 106 | |
| 107 | /* |
| 108 | */ |
| 109 | static void |
Takashi Iwai | 029d64b | 2005-11-17 14:34:36 +0100 | [diff] [blame] | 110 | snd_emu8000_write_wait(struct snd_emu8000 *emu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | { |
| 112 | while ((EMU8000_SMALW_READ(emu) & 0x80000000) != 0) { |
Nishanth Aravamudan | 8433a50 | 2005-10-24 15:02:37 +0200 | [diff] [blame] | 113 | schedule_timeout_interruptible(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | if (signal_pending(current)) |
| 115 | break; |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | /* |
| 120 | * write sample word data |
| 121 | * |
| 122 | * You should not have to keep resetting the address each time |
| 123 | * as the chip is supposed to step on the next address automatically. |
| 124 | * It mostly does, but during writes of some samples at random it |
| 125 | * completely loses words (every one in 16 roughly but with no |
| 126 | * obvious pattern). |
| 127 | * |
| 128 | * This is therefore much slower than need be, but is at least |
| 129 | * working. |
| 130 | */ |
Jesper Juhl | 77933d7 | 2005-07-27 11:46:09 -0700 | [diff] [blame] | 131 | static inline void |
Takashi Iwai | 029d64b | 2005-11-17 14:34:36 +0100 | [diff] [blame] | 132 | write_word(struct snd_emu8000 *emu, int *offset, unsigned short data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | { |
| 134 | if (emu8000_reset_addr) { |
| 135 | if (emu8000_reset_addr > 1) |
| 136 | snd_emu8000_write_wait(emu); |
| 137 | EMU8000_SMALW_WRITE(emu, *offset); |
| 138 | } |
| 139 | EMU8000_SMLD_WRITE(emu, data); |
| 140 | *offset += 1; |
| 141 | } |
| 142 | |
| 143 | /* |
| 144 | * Write the sample to EMU800 memory. This routine is invoked out of |
| 145 | * the generic soundfont routines as a callback. |
| 146 | */ |
| 147 | int |
Takashi Iwai | 029d64b | 2005-11-17 14:34:36 +0100 | [diff] [blame] | 148 | snd_emu8000_sample_new(struct snd_emux *rec, struct snd_sf_sample *sp, |
| 149 | struct snd_util_memhdr *hdr, |
| 150 | const void __user *data, long count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | { |
| 152 | int i; |
| 153 | int rc; |
| 154 | int offset; |
| 155 | int truesize; |
| 156 | int dram_offset, dram_start; |
Takashi Iwai | 029d64b | 2005-11-17 14:34:36 +0100 | [diff] [blame] | 157 | struct snd_emu8000 *emu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | |
| 159 | emu = rec->hw; |
Takashi Iwai | 622207d | 2008-08-08 17:11:45 +0200 | [diff] [blame] | 160 | if (snd_BUG_ON(!sp)) |
| 161 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
| 163 | if (sp->v.size == 0) |
| 164 | return 0; |
| 165 | |
| 166 | /* be sure loop points start < end */ |
| 167 | if (sp->v.loopstart > sp->v.loopend) { |
| 168 | int tmp = sp->v.loopstart; |
| 169 | sp->v.loopstart = sp->v.loopend; |
| 170 | sp->v.loopend = tmp; |
| 171 | } |
| 172 | |
| 173 | /* compute true data size to be loaded */ |
| 174 | truesize = sp->v.size; |
| 175 | if (sp->v.mode_flags & (SNDRV_SFNT_SAMPLE_BIDIR_LOOP|SNDRV_SFNT_SAMPLE_REVERSE_LOOP)) |
| 176 | truesize += sp->v.loopend - sp->v.loopstart; |
| 177 | if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_NO_BLANK) |
| 178 | truesize += BLANK_LOOP_SIZE; |
| 179 | |
| 180 | sp->block = snd_util_mem_alloc(hdr, truesize * 2); |
| 181 | if (sp->block == NULL) { |
| 182 | /*snd_printd("EMU8000: out of memory\n");*/ |
| 183 | /* not ENOMEM (for compatibility) */ |
| 184 | return -ENOSPC; |
| 185 | } |
| 186 | |
| 187 | if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS) { |
| 188 | if (!access_ok(VERIFY_READ, data, sp->v.size)) |
| 189 | return -EFAULT; |
| 190 | } else { |
| 191 | if (!access_ok(VERIFY_READ, data, sp->v.size * 2)) |
| 192 | return -EFAULT; |
| 193 | } |
| 194 | |
| 195 | /* recalculate address offset */ |
| 196 | sp->v.end -= sp->v.start; |
| 197 | sp->v.loopstart -= sp->v.start; |
| 198 | sp->v.loopend -= sp->v.start; |
| 199 | sp->v.start = 0; |
| 200 | |
| 201 | /* dram position (in word) -- mem_offset is byte */ |
| 202 | dram_offset = EMU8000_DRAM_OFFSET + (sp->block->offset >> 1); |
| 203 | dram_start = dram_offset; |
| 204 | |
| 205 | /* set the total size (store onto obsolete checksum value) */ |
| 206 | sp->v.truesize = truesize * 2; /* in bytes */ |
| 207 | |
| 208 | snd_emux_terminate_all(emu->emu); |
| 209 | if ((rc = snd_emu8000_open_dma(emu, EMU8000_RAM_WRITE)) != 0) |
| 210 | return rc; |
| 211 | |
| 212 | /* Set the address to start writing at */ |
| 213 | snd_emu8000_write_wait(emu); |
| 214 | EMU8000_SMALW_WRITE(emu, dram_offset); |
| 215 | |
| 216 | /*snd_emu8000_init_fm(emu);*/ |
| 217 | |
| 218 | #if 0 |
| 219 | /* first block - write 48 samples for silence */ |
| 220 | if (! sp->block->offset) { |
| 221 | for (i = 0; i < BLANK_HEAD_SIZE; i++) { |
| 222 | write_word(emu, &dram_offset, 0); |
| 223 | } |
| 224 | } |
| 225 | #endif |
| 226 | |
| 227 | offset = 0; |
| 228 | for (i = 0; i < sp->v.size; i++) { |
| 229 | unsigned short s; |
| 230 | |
| 231 | s = read_word(data, offset, sp->v.mode_flags); |
| 232 | offset++; |
| 233 | write_word(emu, &dram_offset, s); |
| 234 | |
| 235 | /* we may take too long time in this loop. |
| 236 | * so give controls back to kernel if needed. |
| 237 | */ |
| 238 | cond_resched(); |
| 239 | |
| 240 | if (i == sp->v.loopend && |
| 241 | (sp->v.mode_flags & (SNDRV_SFNT_SAMPLE_BIDIR_LOOP|SNDRV_SFNT_SAMPLE_REVERSE_LOOP))) |
| 242 | { |
| 243 | int looplen = sp->v.loopend - sp->v.loopstart; |
| 244 | int k; |
| 245 | |
| 246 | /* copy reverse loop */ |
| 247 | for (k = 1; k <= looplen; k++) { |
| 248 | s = read_word(data, offset - k, sp->v.mode_flags); |
| 249 | write_word(emu, &dram_offset, s); |
| 250 | } |
| 251 | if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_BIDIR_LOOP) { |
| 252 | sp->v.loopend += looplen; |
| 253 | } else { |
| 254 | sp->v.loopstart += looplen; |
| 255 | sp->v.loopend += looplen; |
| 256 | } |
| 257 | sp->v.end += looplen; |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | /* if no blank loop is attached in the sample, add it */ |
| 262 | if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_NO_BLANK) { |
| 263 | for (i = 0; i < BLANK_LOOP_SIZE; i++) { |
| 264 | write_word(emu, &dram_offset, 0); |
| 265 | } |
| 266 | if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_SINGLESHOT) { |
| 267 | sp->v.loopstart = sp->v.end + BLANK_LOOP_START; |
| 268 | sp->v.loopend = sp->v.end + BLANK_LOOP_END; |
| 269 | } |
| 270 | } |
| 271 | |
| 272 | /* add dram offset */ |
| 273 | sp->v.start += dram_start; |
| 274 | sp->v.end += dram_start; |
| 275 | sp->v.loopstart += dram_start; |
| 276 | sp->v.loopend += dram_start; |
| 277 | |
| 278 | snd_emu8000_close_dma(emu); |
| 279 | snd_emu8000_init_fm(emu); |
| 280 | |
| 281 | return 0; |
| 282 | } |
| 283 | |
| 284 | /* |
| 285 | * free a sample block |
| 286 | */ |
| 287 | int |
Takashi Iwai | 029d64b | 2005-11-17 14:34:36 +0100 | [diff] [blame] | 288 | snd_emu8000_sample_free(struct snd_emux *rec, struct snd_sf_sample *sp, |
| 289 | struct snd_util_memhdr *hdr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | { |
| 291 | if (sp->block) { |
| 292 | snd_util_mem_free(hdr, sp->block); |
| 293 | sp->block = NULL; |
| 294 | } |
| 295 | return 0; |
| 296 | } |
| 297 | |
| 298 | |
| 299 | /* |
| 300 | * sample_reset callback - terminate voices |
| 301 | */ |
| 302 | void |
Takashi Iwai | 029d64b | 2005-11-17 14:34:36 +0100 | [diff] [blame] | 303 | snd_emu8000_sample_reset(struct snd_emux *rec) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | { |
| 305 | snd_emux_terminate_all(rec); |
| 306 | } |