Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Driver for Digigram miXart soundcards |
| 3 | * |
| 4 | * low level interface with interrupt handling and mail box implementation |
| 5 | * |
| 6 | * Copyright (c) 2003 by Digigram <alsa@digigram.com> |
| 7 | * |
| 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. |
| 12 | * |
| 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. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | */ |
| 22 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include <linux/interrupt.h> |
Ingo Molnar | 62932df | 2006-01-16 16:34:20 +0100 | [diff] [blame] | 24 | #include <linux/mutex.h> |
| 25 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <asm/io.h> |
| 27 | #include <sound/core.h> |
| 28 | #include "mixart.h" |
| 29 | #include "mixart_hwdep.h" |
| 30 | #include "mixart_core.h" |
| 31 | |
| 32 | |
| 33 | #define MSG_TIMEOUT_JIFFIES (400 * HZ) / 1000 /* 400 ms */ |
| 34 | |
| 35 | #define MSG_DESCRIPTOR_SIZE 0x24 |
| 36 | #define MSG_HEADER_SIZE (MSG_DESCRIPTOR_SIZE + 4) |
| 37 | |
| 38 | #define MSG_DEFAULT_SIZE 512 |
| 39 | |
| 40 | #define MSG_TYPE_MASK 0x00000003 /* mask for following types */ |
| 41 | #define MSG_TYPE_NOTIFY 0 /* embedded -> driver (only notification, do not get_msg() !) */ |
| 42 | #define MSG_TYPE_COMMAND 1 /* driver <-> embedded (a command has no answer) */ |
| 43 | #define MSG_TYPE_REQUEST 2 /* driver -> embedded (request will get an answer back) */ |
| 44 | #define MSG_TYPE_ANSWER 3 /* embedded -> driver */ |
| 45 | #define MSG_CANCEL_NOTIFY_MASK 0x80000000 /* this bit is set for a notification that has been canceled */ |
| 46 | |
| 47 | |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 48 | static int retrieve_msg_frame(struct mixart_mgr *mgr, u32 *msg_frame) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | { |
| 50 | /* read the message frame fifo */ |
| 51 | u32 headptr, tailptr; |
| 52 | |
| 53 | tailptr = readl_be(MIXART_MEM(mgr, MSG_OUTBOUND_POST_TAIL)); |
| 54 | headptr = readl_be(MIXART_MEM(mgr, MSG_OUTBOUND_POST_HEAD)); |
| 55 | |
| 56 | if (tailptr == headptr) |
| 57 | return 0; /* no message posted */ |
| 58 | |
Takashi Iwai | da3cec3 | 2008-08-08 17:12:14 +0200 | [diff] [blame] | 59 | if (tailptr < MSG_OUTBOUND_POST_STACK) |
| 60 | return 0; /* error */ |
| 61 | if (tailptr >= MSG_OUTBOUND_POST_STACK + MSG_BOUND_STACK_SIZE) |
| 62 | return 0; /* error */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
| 64 | *msg_frame = readl_be(MIXART_MEM(mgr, tailptr)); |
| 65 | |
| 66 | /* increment the tail index */ |
| 67 | tailptr += 4; |
| 68 | if( tailptr >= (MSG_OUTBOUND_POST_STACK+MSG_BOUND_STACK_SIZE) ) |
| 69 | tailptr = MSG_OUTBOUND_POST_STACK; |
| 70 | writel_be(tailptr, MIXART_MEM(mgr, MSG_OUTBOUND_POST_TAIL)); |
| 71 | |
| 72 | return 1; |
| 73 | } |
| 74 | |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 75 | static int get_msg(struct mixart_mgr *mgr, struct mixart_msg *resp, |
| 76 | u32 msg_frame_address ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | { |
| 78 | unsigned long flags; |
| 79 | u32 headptr; |
| 80 | u32 size; |
| 81 | int err; |
| 82 | #ifndef __BIG_ENDIAN |
| 83 | unsigned int i; |
| 84 | #endif |
| 85 | |
| 86 | spin_lock_irqsave(&mgr->msg_lock, flags); |
| 87 | err = 0; |
| 88 | |
| 89 | /* copy message descriptor from miXart to driver */ |
| 90 | size = readl_be(MIXART_MEM(mgr, msg_frame_address)); /* size of descriptor + response */ |
| 91 | resp->message_id = readl_be(MIXART_MEM(mgr, msg_frame_address + 4)); /* dwMessageID */ |
| 92 | resp->uid.object_id = readl_be(MIXART_MEM(mgr, msg_frame_address + 8)); /* uidDest */ |
| 93 | resp->uid.desc = readl_be(MIXART_MEM(mgr, msg_frame_address + 12)); /* */ |
| 94 | |
| 95 | if( (size < MSG_DESCRIPTOR_SIZE) || (resp->size < (size - MSG_DESCRIPTOR_SIZE))) { |
| 96 | err = -EINVAL; |
| 97 | snd_printk(KERN_ERR "problem with response size = %d\n", size); |
| 98 | goto _clean_exit; |
| 99 | } |
| 100 | size -= MSG_DESCRIPTOR_SIZE; |
| 101 | |
| 102 | memcpy_fromio(resp->data, MIXART_MEM(mgr, msg_frame_address + MSG_HEADER_SIZE ), size); |
| 103 | resp->size = size; |
| 104 | |
| 105 | /* swap if necessary */ |
| 106 | #ifndef __BIG_ENDIAN |
| 107 | size /= 4; /* u32 size */ |
| 108 | for(i=0; i < size; i++) { |
| 109 | ((u32*)resp->data)[i] = be32_to_cpu(((u32*)resp->data)[i]); |
| 110 | } |
| 111 | #endif |
| 112 | |
| 113 | /* |
| 114 | * free message frame address |
| 115 | */ |
| 116 | headptr = readl_be(MIXART_MEM(mgr, MSG_OUTBOUND_FREE_HEAD)); |
| 117 | |
| 118 | if( (headptr < MSG_OUTBOUND_FREE_STACK) || ( headptr >= (MSG_OUTBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE))) { |
| 119 | err = -EINVAL; |
| 120 | goto _clean_exit; |
| 121 | } |
| 122 | |
| 123 | /* give address back to outbound fifo */ |
| 124 | writel_be(msg_frame_address, MIXART_MEM(mgr, headptr)); |
| 125 | |
| 126 | /* increment the outbound free head */ |
| 127 | headptr += 4; |
| 128 | if( headptr >= (MSG_OUTBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE) ) |
| 129 | headptr = MSG_OUTBOUND_FREE_STACK; |
| 130 | |
| 131 | writel_be(headptr, MIXART_MEM(mgr, MSG_OUTBOUND_FREE_HEAD)); |
| 132 | |
| 133 | _clean_exit: |
| 134 | spin_unlock_irqrestore(&mgr->msg_lock, flags); |
| 135 | |
| 136 | return err; |
| 137 | } |
| 138 | |
| 139 | |
| 140 | /* |
| 141 | * send a message to miXart. return: the msg_frame used for this message |
| 142 | */ |
| 143 | /* call with mgr->msg_lock held! */ |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 144 | static int send_msg( struct mixart_mgr *mgr, |
| 145 | struct mixart_msg *msg, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | int max_answersize, |
| 147 | int mark_pending, |
| 148 | u32 *msg_event) |
| 149 | { |
| 150 | u32 headptr, tailptr; |
| 151 | u32 msg_frame_address; |
| 152 | int err, i; |
| 153 | |
Takashi Iwai | da3cec3 | 2008-08-08 17:12:14 +0200 | [diff] [blame] | 154 | if (snd_BUG_ON(msg->size % 4)) |
| 155 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | |
| 157 | err = 0; |
| 158 | |
| 159 | /* get message frame address */ |
| 160 | tailptr = readl_be(MIXART_MEM(mgr, MSG_INBOUND_FREE_TAIL)); |
| 161 | headptr = readl_be(MIXART_MEM(mgr, MSG_INBOUND_FREE_HEAD)); |
| 162 | |
| 163 | if (tailptr == headptr) { |
| 164 | snd_printk(KERN_ERR "error: no message frame available\n"); |
| 165 | return -EBUSY; |
| 166 | } |
| 167 | |
| 168 | if( (tailptr < MSG_INBOUND_FREE_STACK) || (tailptr >= (MSG_INBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE))) { |
| 169 | return -EINVAL; |
| 170 | } |
| 171 | |
| 172 | msg_frame_address = readl_be(MIXART_MEM(mgr, tailptr)); |
| 173 | writel(0, MIXART_MEM(mgr, tailptr)); /* set address to zero on this fifo position */ |
| 174 | |
| 175 | /* increment the inbound free tail */ |
| 176 | tailptr += 4; |
| 177 | if( tailptr >= (MSG_INBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE) ) |
| 178 | tailptr = MSG_INBOUND_FREE_STACK; |
| 179 | |
| 180 | writel_be(tailptr, MIXART_MEM(mgr, MSG_INBOUND_FREE_TAIL)); |
| 181 | |
| 182 | /* TODO : use memcpy_toio() with intermediate buffer to copy the message */ |
| 183 | |
| 184 | /* copy message descriptor to card memory */ |
| 185 | writel_be( msg->size + MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address) ); /* size of descriptor + request */ |
| 186 | writel_be( msg->message_id , MIXART_MEM(mgr, msg_frame_address + 4) ); /* dwMessageID */ |
| 187 | writel_be( msg->uid.object_id, MIXART_MEM(mgr, msg_frame_address + 8) ); /* uidDest */ |
| 188 | writel_be( msg->uid.desc, MIXART_MEM(mgr, msg_frame_address + 12) ); /* */ |
| 189 | writel_be( MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address + 16) ); /* SizeHeader */ |
| 190 | writel_be( MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address + 20) ); /* OffsetDLL_T16 */ |
| 191 | writel_be( msg->size, MIXART_MEM(mgr, msg_frame_address + 24) ); /* SizeDLL_T16 */ |
| 192 | writel_be( MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address + 28) ); /* OffsetDLL_DRV */ |
| 193 | writel_be( 0, MIXART_MEM(mgr, msg_frame_address + 32) ); /* SizeDLL_DRV */ |
| 194 | writel_be( MSG_DESCRIPTOR_SIZE + max_answersize, MIXART_MEM(mgr, msg_frame_address + 36) ); /* dwExpectedAnswerSize */ |
| 195 | |
| 196 | /* copy message data to card memory */ |
| 197 | for( i=0; i < msg->size; i+=4 ) { |
| 198 | writel_be( *(u32*)(msg->data + i), MIXART_MEM(mgr, MSG_HEADER_SIZE + msg_frame_address + i) ); |
| 199 | } |
| 200 | |
| 201 | if( mark_pending ) { |
| 202 | if( *msg_event ) { |
| 203 | /* the pending event is the notification we wait for ! */ |
| 204 | mgr->pending_event = *msg_event; |
| 205 | } |
| 206 | else { |
| 207 | /* the pending event is the answer we wait for (same address than the request)! */ |
| 208 | mgr->pending_event = msg_frame_address; |
| 209 | |
| 210 | /* copy address back to caller */ |
| 211 | *msg_event = msg_frame_address; |
| 212 | } |
| 213 | } |
| 214 | |
| 215 | /* mark the frame as a request (will have an answer) */ |
| 216 | msg_frame_address |= MSG_TYPE_REQUEST; |
| 217 | |
| 218 | /* post the frame */ |
| 219 | headptr = readl_be(MIXART_MEM(mgr, MSG_INBOUND_POST_HEAD)); |
| 220 | |
| 221 | if( (headptr < MSG_INBOUND_POST_STACK) || (headptr >= (MSG_INBOUND_POST_STACK+MSG_BOUND_STACK_SIZE))) { |
| 222 | return -EINVAL; |
| 223 | } |
| 224 | |
| 225 | writel_be(msg_frame_address, MIXART_MEM(mgr, headptr)); |
| 226 | |
| 227 | /* increment the inbound post head */ |
| 228 | headptr += 4; |
| 229 | if( headptr >= (MSG_INBOUND_POST_STACK+MSG_BOUND_STACK_SIZE) ) |
| 230 | headptr = MSG_INBOUND_POST_STACK; |
| 231 | |
| 232 | writel_be(headptr, MIXART_MEM(mgr, MSG_INBOUND_POST_HEAD)); |
| 233 | |
| 234 | return 0; |
| 235 | } |
| 236 | |
| 237 | |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 238 | int snd_mixart_send_msg(struct mixart_mgr *mgr, struct mixart_msg *request, int max_resp_size, void *resp_data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | { |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 240 | struct mixart_msg resp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | u32 msg_frame = 0; /* set to 0, so it's no notification to wait for, but the answer */ |
| 242 | int err; |
| 243 | wait_queue_t wait; |
| 244 | long timeout; |
| 245 | |
Ingo Molnar | 62932df | 2006-01-16 16:34:20 +0100 | [diff] [blame] | 246 | mutex_lock(&mgr->msg_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | |
| 248 | init_waitqueue_entry(&wait, current); |
| 249 | |
| 250 | spin_lock_irq(&mgr->msg_lock); |
| 251 | /* send the message */ |
| 252 | err = send_msg(mgr, request, max_resp_size, 1, &msg_frame); /* send and mark the answer pending */ |
| 253 | if (err) { |
| 254 | spin_unlock_irq(&mgr->msg_lock); |
Ingo Molnar | 62932df | 2006-01-16 16:34:20 +0100 | [diff] [blame] | 255 | mutex_unlock(&mgr->msg_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | return err; |
| 257 | } |
| 258 | |
| 259 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 260 | add_wait_queue(&mgr->msg_sleep, &wait); |
| 261 | spin_unlock_irq(&mgr->msg_lock); |
| 262 | timeout = schedule_timeout(MSG_TIMEOUT_JIFFIES); |
| 263 | remove_wait_queue(&mgr->msg_sleep, &wait); |
| 264 | |
| 265 | if (! timeout) { |
| 266 | /* error - no ack */ |
Ingo Molnar | 62932df | 2006-01-16 16:34:20 +0100 | [diff] [blame] | 267 | mutex_unlock(&mgr->msg_mutex); |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 268 | snd_printk(KERN_ERR "error: no response on msg %x\n", msg_frame); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | return -EIO; |
| 270 | } |
| 271 | |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 272 | /* retrieve the answer into the same struct mixart_msg */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | resp.message_id = 0; |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 274 | resp.uid = (struct mixart_uid){0,0}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | resp.data = resp_data; |
| 276 | resp.size = max_resp_size; |
| 277 | |
| 278 | err = get_msg(mgr, &resp, msg_frame); |
| 279 | |
| 280 | if( request->message_id != resp.message_id ) |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 281 | snd_printk(KERN_ERR "RESPONSE ERROR!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | |
Ingo Molnar | 62932df | 2006-01-16 16:34:20 +0100 | [diff] [blame] | 283 | mutex_unlock(&mgr->msg_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | return err; |
| 285 | } |
| 286 | |
| 287 | |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 288 | int snd_mixart_send_msg_wait_notif(struct mixart_mgr *mgr, |
| 289 | struct mixart_msg *request, u32 notif_event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | { |
| 291 | int err; |
| 292 | wait_queue_t wait; |
| 293 | long timeout; |
| 294 | |
Takashi Iwai | da3cec3 | 2008-08-08 17:12:14 +0200 | [diff] [blame] | 295 | if (snd_BUG_ON(!notif_event)) |
| 296 | return -EINVAL; |
| 297 | if (snd_BUG_ON((notif_event & MSG_TYPE_MASK) != MSG_TYPE_NOTIFY)) |
| 298 | return -EINVAL; |
| 299 | if (snd_BUG_ON(notif_event & MSG_CANCEL_NOTIFY_MASK)) |
| 300 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | |
Ingo Molnar | 62932df | 2006-01-16 16:34:20 +0100 | [diff] [blame] | 302 | mutex_lock(&mgr->msg_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | |
| 304 | init_waitqueue_entry(&wait, current); |
| 305 | |
| 306 | spin_lock_irq(&mgr->msg_lock); |
| 307 | /* send the message */ |
| 308 | err = send_msg(mgr, request, MSG_DEFAULT_SIZE, 1, ¬if_event); /* send and mark the notification event pending */ |
| 309 | if(err) { |
| 310 | spin_unlock_irq(&mgr->msg_lock); |
Ingo Molnar | 62932df | 2006-01-16 16:34:20 +0100 | [diff] [blame] | 311 | mutex_unlock(&mgr->msg_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | return err; |
| 313 | } |
| 314 | |
| 315 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 316 | add_wait_queue(&mgr->msg_sleep, &wait); |
| 317 | spin_unlock_irq(&mgr->msg_lock); |
| 318 | timeout = schedule_timeout(MSG_TIMEOUT_JIFFIES); |
| 319 | remove_wait_queue(&mgr->msg_sleep, &wait); |
| 320 | |
| 321 | if (! timeout) { |
| 322 | /* error - no ack */ |
Ingo Molnar | 62932df | 2006-01-16 16:34:20 +0100 | [diff] [blame] | 323 | mutex_unlock(&mgr->msg_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | snd_printk(KERN_ERR "error: notification %x not received\n", notif_event); |
| 325 | return -EIO; |
| 326 | } |
| 327 | |
Ingo Molnar | 62932df | 2006-01-16 16:34:20 +0100 | [diff] [blame] | 328 | mutex_unlock(&mgr->msg_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | return 0; |
| 330 | } |
| 331 | |
| 332 | |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 333 | int snd_mixart_send_msg_nonblock(struct mixart_mgr *mgr, struct mixart_msg *request) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | { |
| 335 | u32 message_frame; |
| 336 | unsigned long flags; |
| 337 | int err; |
| 338 | |
| 339 | /* just send the message (do not mark it as a pending one) */ |
| 340 | spin_lock_irqsave(&mgr->msg_lock, flags); |
| 341 | err = send_msg(mgr, request, MSG_DEFAULT_SIZE, 0, &message_frame); |
| 342 | spin_unlock_irqrestore(&mgr->msg_lock, flags); |
| 343 | |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 344 | /* the answer will be handled by snd_struct mixart_msgasklet() */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | atomic_inc(&mgr->msg_processed); |
| 346 | |
| 347 | return err; |
| 348 | } |
| 349 | |
| 350 | |
| 351 | /* common buffer of tasklet and interrupt to send/receive messages */ |
| 352 | static u32 mixart_msg_data[MSG_DEFAULT_SIZE / 4]; |
| 353 | |
| 354 | |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 355 | void snd_mixart_msg_tasklet(unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | { |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 357 | struct mixart_mgr *mgr = ( struct mixart_mgr*)(arg); |
| 358 | struct mixart_msg resp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | u32 msg, addr, type; |
| 360 | int err; |
| 361 | |
| 362 | spin_lock(&mgr->lock); |
| 363 | |
| 364 | while (mgr->msg_fifo_readptr != mgr->msg_fifo_writeptr) { |
| 365 | msg = mgr->msg_fifo[mgr->msg_fifo_readptr]; |
| 366 | mgr->msg_fifo_readptr++; |
| 367 | mgr->msg_fifo_readptr %= MSG_FIFO_SIZE; |
| 368 | |
| 369 | /* process the message ... */ |
| 370 | addr = msg & ~MSG_TYPE_MASK; |
| 371 | type = msg & MSG_TYPE_MASK; |
| 372 | |
| 373 | switch (type) { |
| 374 | case MSG_TYPE_ANSWER: |
| 375 | /* answer to a message on that we did not wait for (send_msg_nonblock) */ |
| 376 | resp.message_id = 0; |
| 377 | resp.data = mixart_msg_data; |
| 378 | resp.size = sizeof(mixart_msg_data); |
| 379 | err = get_msg(mgr, &resp, addr); |
| 380 | if( err < 0 ) { |
| 381 | snd_printk(KERN_ERR "tasklet: error(%d) reading mf %x\n", err, msg); |
| 382 | break; |
| 383 | } |
| 384 | |
| 385 | switch(resp.message_id) { |
| 386 | case MSG_STREAM_START_INPUT_STAGE_PACKET: |
| 387 | case MSG_STREAM_START_OUTPUT_STAGE_PACKET: |
| 388 | case MSG_STREAM_STOP_INPUT_STAGE_PACKET: |
| 389 | case MSG_STREAM_STOP_OUTPUT_STAGE_PACKET: |
| 390 | if(mixart_msg_data[0]) |
| 391 | snd_printk(KERN_ERR "tasklet : error MSG_STREAM_ST***_***PUT_STAGE_PACKET status=%x\n", mixart_msg_data[0]); |
| 392 | break; |
| 393 | default: |
| 394 | snd_printdd("tasklet received mf(%x) : msg_id(%x) uid(%x, %x) size(%zd)\n", |
| 395 | msg, resp.message_id, resp.uid.object_id, resp.uid.desc, resp.size); |
| 396 | break; |
| 397 | } |
| 398 | break; |
| 399 | case MSG_TYPE_NOTIFY: |
| 400 | /* msg contains no address ! do not get_msg() ! */ |
| 401 | case MSG_TYPE_COMMAND: |
| 402 | /* get_msg() necessary */ |
| 403 | default: |
| 404 | snd_printk(KERN_ERR "tasklet doesn't know what to do with message %x\n", msg); |
| 405 | } /* switch type */ |
| 406 | |
| 407 | /* decrement counter */ |
| 408 | atomic_dec(&mgr->msg_processed); |
| 409 | |
| 410 | } /* while there is a msg in fifo */ |
| 411 | |
| 412 | spin_unlock(&mgr->lock); |
| 413 | } |
| 414 | |
| 415 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 416 | irqreturn_t snd_mixart_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | { |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 418 | struct mixart_mgr *mgr = dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | int err; |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 420 | struct mixart_msg resp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | |
| 422 | u32 msg; |
| 423 | u32 it_reg; |
| 424 | |
| 425 | spin_lock(&mgr->lock); |
| 426 | |
| 427 | it_reg = readl_le(MIXART_REG(mgr, MIXART_PCI_OMISR_OFFSET)); |
| 428 | if( !(it_reg & MIXART_OIDI) ) { |
| 429 | /* this device did not cause the interrupt */ |
| 430 | spin_unlock(&mgr->lock); |
| 431 | return IRQ_NONE; |
| 432 | } |
| 433 | |
| 434 | /* mask all interrupts */ |
| 435 | writel_le(MIXART_HOST_ALL_INTERRUPT_MASKED, MIXART_REG(mgr, MIXART_PCI_OMIMR_OFFSET)); |
| 436 | |
| 437 | /* outdoorbell register clear */ |
| 438 | it_reg = readl(MIXART_REG(mgr, MIXART_PCI_ODBR_OFFSET)); |
| 439 | writel(it_reg, MIXART_REG(mgr, MIXART_PCI_ODBR_OFFSET)); |
| 440 | |
| 441 | /* clear interrupt */ |
| 442 | writel_le( MIXART_OIDI, MIXART_REG(mgr, MIXART_PCI_OMISR_OFFSET) ); |
| 443 | |
| 444 | /* process interrupt */ |
| 445 | while (retrieve_msg_frame(mgr, &msg)) { |
| 446 | |
| 447 | switch (msg & MSG_TYPE_MASK) { |
| 448 | case MSG_TYPE_COMMAND: |
| 449 | resp.message_id = 0; |
| 450 | resp.data = mixart_msg_data; |
| 451 | resp.size = sizeof(mixart_msg_data); |
| 452 | err = get_msg(mgr, &resp, msg & ~MSG_TYPE_MASK); |
| 453 | if( err < 0 ) { |
| 454 | snd_printk(KERN_ERR "interrupt: error(%d) reading mf %x\n", err, msg); |
| 455 | break; |
| 456 | } |
| 457 | |
| 458 | if(resp.message_id == MSG_SERVICES_TIMER_NOTIFY) { |
| 459 | int i; |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 460 | struct mixart_timer_notify *notify; |
| 461 | notify = (struct mixart_timer_notify *)mixart_msg_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | |
| 463 | for(i=0; i<notify->stream_count; i++) { |
| 464 | |
| 465 | u32 buffer_id = notify->streams[i].buffer_id; |
| 466 | unsigned int chip_number = (buffer_id & MIXART_NOTIFY_CARD_MASK) >> MIXART_NOTIFY_CARD_OFFSET; /* card0 to 3 */ |
| 467 | unsigned int pcm_number = (buffer_id & MIXART_NOTIFY_PCM_MASK ) >> MIXART_NOTIFY_PCM_OFFSET; /* pcm0 to 3 */ |
| 468 | unsigned int sub_number = buffer_id & MIXART_NOTIFY_SUBS_MASK; /* 0 to MIXART_PLAYBACK_STREAMS */ |
| 469 | unsigned int is_capture = ((buffer_id & MIXART_NOTIFY_CAPT_MASK) != 0); /* playback == 0 / capture == 1 */ |
| 470 | |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 471 | struct snd_mixart *chip = mgr->chip[chip_number]; |
| 472 | struct mixart_stream *stream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | |
| 474 | if ((chip_number >= mgr->num_cards) || (pcm_number >= MIXART_PCM_TOTAL) || (sub_number >= MIXART_PLAYBACK_STREAMS)) { |
| 475 | snd_printk(KERN_ERR "error MSG_SERVICES_TIMER_NOTIFY buffer_id (%x) pos(%d)\n", |
| 476 | buffer_id, notify->streams[i].sample_pos_low_part); |
| 477 | break; |
| 478 | } |
| 479 | |
| 480 | if (is_capture) |
| 481 | stream = &chip->capture_stream[pcm_number]; |
| 482 | else |
| 483 | stream = &chip->playback_stream[pcm_number][sub_number]; |
| 484 | |
| 485 | if (stream->substream && (stream->status == MIXART_STREAM_STATUS_RUNNING)) { |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 486 | struct snd_pcm_runtime *runtime = stream->substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | int elapsed = 0; |
| 488 | u64 sample_count = ((u64)notify->streams[i].sample_pos_high_part) << 32; |
| 489 | sample_count |= notify->streams[i].sample_pos_low_part; |
| 490 | |
| 491 | while (1) { |
| 492 | u64 new_elapse_pos = stream->abs_period_elapsed + runtime->period_size; |
| 493 | |
| 494 | if (new_elapse_pos > sample_count) { |
| 495 | break; /* while */ |
| 496 | } |
| 497 | else { |
| 498 | elapsed = 1; |
| 499 | stream->buf_periods++; |
| 500 | if (stream->buf_periods >= runtime->periods) |
| 501 | stream->buf_periods = 0; |
| 502 | |
| 503 | stream->abs_period_elapsed = new_elapse_pos; |
| 504 | } |
| 505 | } |
| 506 | stream->buf_period_frag = (u32)( sample_count - stream->abs_period_elapsed ); |
| 507 | |
| 508 | if(elapsed) { |
| 509 | spin_unlock(&mgr->lock); |
| 510 | snd_pcm_period_elapsed(stream->substream); |
| 511 | spin_lock(&mgr->lock); |
| 512 | } |
| 513 | } |
| 514 | } |
| 515 | break; |
| 516 | } |
| 517 | if(resp.message_id == MSG_SERVICES_REPORT_TRACES) { |
| 518 | if(resp.size > 1) { |
| 519 | #ifndef __BIG_ENDIAN |
| 520 | /* Traces are text: the swapped msg_data has to be swapped back ! */ |
| 521 | int i; |
| 522 | for(i=0; i<(resp.size/4); i++) { |
| 523 | (mixart_msg_data)[i] = cpu_to_be32((mixart_msg_data)[i]); |
| 524 | } |
| 525 | #endif |
| 526 | ((char*)mixart_msg_data)[resp.size - 1] = 0; |
| 527 | snd_printdd("MIXART TRACE : %s\n", (char*)mixart_msg_data); |
| 528 | } |
| 529 | break; |
| 530 | } |
| 531 | |
| 532 | snd_printdd("command %x not handled\n", resp.message_id); |
| 533 | break; |
| 534 | |
| 535 | case MSG_TYPE_NOTIFY: |
| 536 | if(msg & MSG_CANCEL_NOTIFY_MASK) { |
| 537 | msg &= ~MSG_CANCEL_NOTIFY_MASK; |
| 538 | snd_printk(KERN_ERR "canceled notification %x !\n", msg); |
| 539 | } |
| 540 | /* no break, continue ! */ |
| 541 | case MSG_TYPE_ANSWER: |
| 542 | /* answer or notification to a message we are waiting for*/ |
| 543 | spin_lock(&mgr->msg_lock); |
| 544 | if( (msg & ~MSG_TYPE_MASK) == mgr->pending_event ) { |
| 545 | wake_up(&mgr->msg_sleep); |
| 546 | mgr->pending_event = 0; |
| 547 | } |
| 548 | /* answer to a message we did't want to wait for */ |
| 549 | else { |
| 550 | mgr->msg_fifo[mgr->msg_fifo_writeptr] = msg; |
| 551 | mgr->msg_fifo_writeptr++; |
| 552 | mgr->msg_fifo_writeptr %= MSG_FIFO_SIZE; |
Takashi Iwai | 1f04128 | 2008-12-18 12:17:55 +0100 | [diff] [blame] | 553 | tasklet_schedule(&mgr->msg_taskq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | } |
| 555 | spin_unlock(&mgr->msg_lock); |
| 556 | break; |
| 557 | case MSG_TYPE_REQUEST: |
| 558 | default: |
| 559 | snd_printdd("interrupt received request %x\n", msg); |
| 560 | /* TODO : are there things to do here ? */ |
| 561 | break; |
| 562 | } /* switch on msg type */ |
| 563 | } /* while there are msgs */ |
| 564 | |
| 565 | /* allow interrupt again */ |
| 566 | writel_le( MIXART_ALLOW_OUTBOUND_DOORBELL, MIXART_REG( mgr, MIXART_PCI_OMIMR_OFFSET)); |
| 567 | |
| 568 | spin_unlock(&mgr->lock); |
| 569 | |
| 570 | return IRQ_HANDLED; |
| 571 | } |
| 572 | |
| 573 | |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 574 | void snd_mixart_init_mailbox(struct mixart_mgr *mgr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | { |
| 576 | writel( 0, MIXART_MEM( mgr, MSG_HOST_RSC_PROTECTION ) ); |
| 577 | writel( 0, MIXART_MEM( mgr, MSG_AGENT_RSC_PROTECTION ) ); |
| 578 | |
| 579 | /* allow outbound messagebox to generate interrupts */ |
| 580 | if(mgr->irq >= 0) { |
| 581 | writel_le( MIXART_ALLOW_OUTBOUND_DOORBELL, MIXART_REG( mgr, MIXART_PCI_OMIMR_OFFSET)); |
| 582 | } |
| 583 | return; |
| 584 | } |
| 585 | |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 586 | void snd_mixart_exit_mailbox(struct mixart_mgr *mgr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | { |
| 588 | /* no more interrupts on outbound messagebox */ |
| 589 | writel_le( MIXART_HOST_ALL_INTERRUPT_MASKED, MIXART_REG( mgr, MIXART_PCI_OMIMR_OFFSET)); |
| 590 | return; |
| 591 | } |
| 592 | |
Takashi Iwai | 67b48b8 | 2005-11-17 15:01:08 +0100 | [diff] [blame] | 593 | void snd_mixart_reset_board(struct mixart_mgr *mgr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | { |
| 595 | /* reset miXart */ |
| 596 | writel_be( 1, MIXART_REG(mgr, MIXART_BA1_BRUTAL_RESET_OFFSET) ); |
| 597 | return; |
| 598 | } |