1 |
3 |
xianfeng |
/*
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2 |
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* Driver for Digigram miXart soundcards
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3 |
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*
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* low level interface with interrupt handling and mail box implementation
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*
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* Copyright (c) 2003 by Digigram <alsa@digigram.com>
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7 |
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <sound/driver.h>
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24 |
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#include <linux/interrupt.h>
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25 |
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#include <linux/mutex.h>
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26 |
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#include <asm/io.h>
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28 |
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#include <sound/core.h>
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29 |
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#include "mixart.h"
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30 |
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#include "mixart_hwdep.h"
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31 |
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#include "mixart_core.h"
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32 |
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33 |
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34 |
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#define MSG_TIMEOUT_JIFFIES (400 * HZ) / 1000 /* 400 ms */
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35 |
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36 |
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#define MSG_DESCRIPTOR_SIZE 0x24
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37 |
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#define MSG_HEADER_SIZE (MSG_DESCRIPTOR_SIZE + 4)
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38 |
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39 |
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#define MSG_DEFAULT_SIZE 512
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40 |
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41 |
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#define MSG_TYPE_MASK 0x00000003 /* mask for following types */
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42 |
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#define MSG_TYPE_NOTIFY 0 /* embedded -> driver (only notification, do not get_msg() !) */
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#define MSG_TYPE_COMMAND 1 /* driver <-> embedded (a command has no answer) */
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44 |
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#define MSG_TYPE_REQUEST 2 /* driver -> embedded (request will get an answer back) */
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45 |
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#define MSG_TYPE_ANSWER 3 /* embedded -> driver */
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46 |
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#define MSG_CANCEL_NOTIFY_MASK 0x80000000 /* this bit is set for a notification that has been canceled */
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49 |
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static int retrieve_msg_frame(struct mixart_mgr *mgr, u32 *msg_frame)
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50 |
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{
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/* read the message frame fifo */
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52 |
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u32 headptr, tailptr;
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53 |
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54 |
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tailptr = readl_be(MIXART_MEM(mgr, MSG_OUTBOUND_POST_TAIL));
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headptr = readl_be(MIXART_MEM(mgr, MSG_OUTBOUND_POST_HEAD));
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56 |
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57 |
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if (tailptr == headptr)
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return 0; /* no message posted */
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60 |
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snd_assert( tailptr >= MSG_OUTBOUND_POST_STACK, return 0); /* error */
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snd_assert( tailptr < (MSG_OUTBOUND_POST_STACK+MSG_BOUND_STACK_SIZE), return 0); /* error */
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62 |
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63 |
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*msg_frame = readl_be(MIXART_MEM(mgr, tailptr));
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64 |
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65 |
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/* increment the tail index */
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66 |
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tailptr += 4;
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if( tailptr >= (MSG_OUTBOUND_POST_STACK+MSG_BOUND_STACK_SIZE) )
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68 |
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tailptr = MSG_OUTBOUND_POST_STACK;
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writel_be(tailptr, MIXART_MEM(mgr, MSG_OUTBOUND_POST_TAIL));
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return 1;
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}
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static int get_msg(struct mixart_mgr *mgr, struct mixart_msg *resp,
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u32 msg_frame_address )
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{
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unsigned long flags;
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u32 headptr;
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u32 size;
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int err;
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#ifndef __BIG_ENDIAN
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unsigned int i;
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#endif
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spin_lock_irqsave(&mgr->msg_lock, flags);
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err = 0;
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/* copy message descriptor from miXart to driver */
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size = readl_be(MIXART_MEM(mgr, msg_frame_address)); /* size of descriptor + response */
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resp->message_id = readl_be(MIXART_MEM(mgr, msg_frame_address + 4)); /* dwMessageID */
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resp->uid.object_id = readl_be(MIXART_MEM(mgr, msg_frame_address + 8)); /* uidDest */
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resp->uid.desc = readl_be(MIXART_MEM(mgr, msg_frame_address + 12)); /* */
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if( (size < MSG_DESCRIPTOR_SIZE) || (resp->size < (size - MSG_DESCRIPTOR_SIZE))) {
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err = -EINVAL;
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snd_printk(KERN_ERR "problem with response size = %d\n", size);
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goto _clean_exit;
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}
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size -= MSG_DESCRIPTOR_SIZE;
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memcpy_fromio(resp->data, MIXART_MEM(mgr, msg_frame_address + MSG_HEADER_SIZE ), size);
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resp->size = size;
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/* swap if necessary */
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#ifndef __BIG_ENDIAN
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size /= 4; /* u32 size */
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for(i=0; i < size; i++) {
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((u32*)resp->data)[i] = be32_to_cpu(((u32*)resp->data)[i]);
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}
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#endif
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/*
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* free message frame address
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*/
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headptr = readl_be(MIXART_MEM(mgr, MSG_OUTBOUND_FREE_HEAD));
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if( (headptr < MSG_OUTBOUND_FREE_STACK) || ( headptr >= (MSG_OUTBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE))) {
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err = -EINVAL;
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goto _clean_exit;
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}
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/* give address back to outbound fifo */
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writel_be(msg_frame_address, MIXART_MEM(mgr, headptr));
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/* increment the outbound free head */
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headptr += 4;
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if( headptr >= (MSG_OUTBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE) )
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headptr = MSG_OUTBOUND_FREE_STACK;
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writel_be(headptr, MIXART_MEM(mgr, MSG_OUTBOUND_FREE_HEAD));
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_clean_exit:
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spin_unlock_irqrestore(&mgr->msg_lock, flags);
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return err;
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}
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/*
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* send a message to miXart. return: the msg_frame used for this message
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*/
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/* call with mgr->msg_lock held! */
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static int send_msg( struct mixart_mgr *mgr,
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struct mixart_msg *msg,
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int max_answersize,
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int mark_pending,
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u32 *msg_event)
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{
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u32 headptr, tailptr;
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u32 msg_frame_address;
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int err, i;
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snd_assert(msg->size % 4 == 0, return -EINVAL);
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err = 0;
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/* get message frame address */
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tailptr = readl_be(MIXART_MEM(mgr, MSG_INBOUND_FREE_TAIL));
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headptr = readl_be(MIXART_MEM(mgr, MSG_INBOUND_FREE_HEAD));
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if (tailptr == headptr) {
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snd_printk(KERN_ERR "error: no message frame available\n");
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return -EBUSY;
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}
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if( (tailptr < MSG_INBOUND_FREE_STACK) || (tailptr >= (MSG_INBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE))) {
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return -EINVAL;
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}
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msg_frame_address = readl_be(MIXART_MEM(mgr, tailptr));
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writel(0, MIXART_MEM(mgr, tailptr)); /* set address to zero on this fifo position */
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/* increment the inbound free tail */
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tailptr += 4;
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if( tailptr >= (MSG_INBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE) )
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tailptr = MSG_INBOUND_FREE_STACK;
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writel_be(tailptr, MIXART_MEM(mgr, MSG_INBOUND_FREE_TAIL));
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/* TODO : use memcpy_toio() with intermediate buffer to copy the message */
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/* copy message descriptor to card memory */
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writel_be( msg->size + MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address) ); /* size of descriptor + request */
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writel_be( msg->message_id , MIXART_MEM(mgr, msg_frame_address + 4) ); /* dwMessageID */
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writel_be( msg->uid.object_id, MIXART_MEM(mgr, msg_frame_address + 8) ); /* uidDest */
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writel_be( msg->uid.desc, MIXART_MEM(mgr, msg_frame_address + 12) ); /* */
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writel_be( MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address + 16) ); /* SizeHeader */
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writel_be( MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address + 20) ); /* OffsetDLL_T16 */
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writel_be( msg->size, MIXART_MEM(mgr, msg_frame_address + 24) ); /* SizeDLL_T16 */
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190 |
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writel_be( MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address + 28) ); /* OffsetDLL_DRV */
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writel_be( 0, MIXART_MEM(mgr, msg_frame_address + 32) ); /* SizeDLL_DRV */
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192 |
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writel_be( MSG_DESCRIPTOR_SIZE + max_answersize, MIXART_MEM(mgr, msg_frame_address + 36) ); /* dwExpectedAnswerSize */
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194 |
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/* copy message data to card memory */
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for( i=0; i < msg->size; i+=4 ) {
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196 |
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writel_be( *(u32*)(msg->data + i), MIXART_MEM(mgr, MSG_HEADER_SIZE + msg_frame_address + i) );
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197 |
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}
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198 |
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199 |
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if( mark_pending ) {
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200 |
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if( *msg_event ) {
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201 |
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/* the pending event is the notification we wait for ! */
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202 |
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mgr->pending_event = *msg_event;
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203 |
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}
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204 |
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else {
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205 |
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/* the pending event is the answer we wait for (same address than the request)! */
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206 |
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mgr->pending_event = msg_frame_address;
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207 |
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208 |
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/* copy address back to caller */
|
209 |
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*msg_event = msg_frame_address;
|
210 |
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}
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211 |
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}
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212 |
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213 |
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/* mark the frame as a request (will have an answer) */
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214 |
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msg_frame_address |= MSG_TYPE_REQUEST;
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215 |
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216 |
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/* post the frame */
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217 |
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headptr = readl_be(MIXART_MEM(mgr, MSG_INBOUND_POST_HEAD));
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218 |
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219 |
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if( (headptr < MSG_INBOUND_POST_STACK) || (headptr >= (MSG_INBOUND_POST_STACK+MSG_BOUND_STACK_SIZE))) {
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220 |
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return -EINVAL;
|
221 |
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}
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222 |
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|
223 |
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writel_be(msg_frame_address, MIXART_MEM(mgr, headptr));
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224 |
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|
225 |
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/* increment the inbound post head */
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226 |
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headptr += 4;
|
227 |
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if( headptr >= (MSG_INBOUND_POST_STACK+MSG_BOUND_STACK_SIZE) )
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228 |
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headptr = MSG_INBOUND_POST_STACK;
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229 |
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230 |
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writel_be(headptr, MIXART_MEM(mgr, MSG_INBOUND_POST_HEAD));
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231 |
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|
232 |
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return 0;
|
233 |
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}
|
234 |
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235 |
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|
236 |
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int snd_mixart_send_msg(struct mixart_mgr *mgr, struct mixart_msg *request, int max_resp_size, void *resp_data)
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237 |
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{
|
238 |
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struct mixart_msg resp;
|
239 |
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u32 msg_frame = 0; /* set to 0, so it's no notification to wait for, but the answer */
|
240 |
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int err;
|
241 |
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wait_queue_t wait;
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242 |
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long timeout;
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243 |
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|
244 |
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mutex_lock(&mgr->msg_mutex);
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245 |
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246 |
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init_waitqueue_entry(&wait, current);
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247 |
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248 |
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spin_lock_irq(&mgr->msg_lock);
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249 |
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/* send the message */
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250 |
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err = send_msg(mgr, request, max_resp_size, 1, &msg_frame); /* send and mark the answer pending */
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251 |
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if (err) {
|
252 |
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spin_unlock_irq(&mgr->msg_lock);
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253 |
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mutex_unlock(&mgr->msg_mutex);
|
254 |
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return err;
|
255 |
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}
|
256 |
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|
257 |
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set_current_state(TASK_UNINTERRUPTIBLE);
|
258 |
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add_wait_queue(&mgr->msg_sleep, &wait);
|
259 |
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spin_unlock_irq(&mgr->msg_lock);
|
260 |
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timeout = schedule_timeout(MSG_TIMEOUT_JIFFIES);
|
261 |
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remove_wait_queue(&mgr->msg_sleep, &wait);
|
262 |
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|
263 |
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if (! timeout) {
|
264 |
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/* error - no ack */
|
265 |
|
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mutex_unlock(&mgr->msg_mutex);
|
266 |
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snd_printk(KERN_ERR "error: no reponse on msg %x\n", msg_frame);
|
267 |
|
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return -EIO;
|
268 |
|
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}
|
269 |
|
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|
270 |
|
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/* retrieve the answer into the same struct mixart_msg */
|
271 |
|
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resp.message_id = 0;
|
272 |
|
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resp.uid = (struct mixart_uid){0,0};
|
273 |
|
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resp.data = resp_data;
|
274 |
|
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resp.size = max_resp_size;
|
275 |
|
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|
276 |
|
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err = get_msg(mgr, &resp, msg_frame);
|
277 |
|
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|
278 |
|
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if( request->message_id != resp.message_id )
|
279 |
|
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snd_printk(KERN_ERR "REPONSE ERROR!\n");
|
280 |
|
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|
281 |
|
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mutex_unlock(&mgr->msg_mutex);
|
282 |
|
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return err;
|
283 |
|
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}
|
284 |
|
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|
285 |
|
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|
286 |
|
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int snd_mixart_send_msg_wait_notif(struct mixart_mgr *mgr,
|
287 |
|
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struct mixart_msg *request, u32 notif_event)
|
288 |
|
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{
|
289 |
|
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int err;
|
290 |
|
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wait_queue_t wait;
|
291 |
|
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long timeout;
|
292 |
|
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|
293 |
|
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snd_assert(notif_event != 0, return -EINVAL);
|
294 |
|
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snd_assert((notif_event & MSG_TYPE_MASK) == MSG_TYPE_NOTIFY, return -EINVAL);
|
295 |
|
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snd_assert((notif_event & MSG_CANCEL_NOTIFY_MASK) == 0, return -EINVAL);
|
296 |
|
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|
297 |
|
|
mutex_lock(&mgr->msg_mutex);
|
298 |
|
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|
299 |
|
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init_waitqueue_entry(&wait, current);
|
300 |
|
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|
301 |
|
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spin_lock_irq(&mgr->msg_lock);
|
302 |
|
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/* send the message */
|
303 |
|
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err = send_msg(mgr, request, MSG_DEFAULT_SIZE, 1, ¬if_event); /* send and mark the notification event pending */
|
304 |
|
|
if(err) {
|
305 |
|
|
spin_unlock_irq(&mgr->msg_lock);
|
306 |
|
|
mutex_unlock(&mgr->msg_mutex);
|
307 |
|
|
return err;
|
308 |
|
|
}
|
309 |
|
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|
310 |
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
311 |
|
|
add_wait_queue(&mgr->msg_sleep, &wait);
|
312 |
|
|
spin_unlock_irq(&mgr->msg_lock);
|
313 |
|
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timeout = schedule_timeout(MSG_TIMEOUT_JIFFIES);
|
314 |
|
|
remove_wait_queue(&mgr->msg_sleep, &wait);
|
315 |
|
|
|
316 |
|
|
if (! timeout) {
|
317 |
|
|
/* error - no ack */
|
318 |
|
|
mutex_unlock(&mgr->msg_mutex);
|
319 |
|
|
snd_printk(KERN_ERR "error: notification %x not received\n", notif_event);
|
320 |
|
|
return -EIO;
|
321 |
|
|
}
|
322 |
|
|
|
323 |
|
|
mutex_unlock(&mgr->msg_mutex);
|
324 |
|
|
return 0;
|
325 |
|
|
}
|
326 |
|
|
|
327 |
|
|
|
328 |
|
|
int snd_mixart_send_msg_nonblock(struct mixart_mgr *mgr, struct mixart_msg *request)
|
329 |
|
|
{
|
330 |
|
|
u32 message_frame;
|
331 |
|
|
unsigned long flags;
|
332 |
|
|
int err;
|
333 |
|
|
|
334 |
|
|
/* just send the message (do not mark it as a pending one) */
|
335 |
|
|
spin_lock_irqsave(&mgr->msg_lock, flags);
|
336 |
|
|
err = send_msg(mgr, request, MSG_DEFAULT_SIZE, 0, &message_frame);
|
337 |
|
|
spin_unlock_irqrestore(&mgr->msg_lock, flags);
|
338 |
|
|
|
339 |
|
|
/* the answer will be handled by snd_struct mixart_msgasklet() */
|
340 |
|
|
atomic_inc(&mgr->msg_processed);
|
341 |
|
|
|
342 |
|
|
return err;
|
343 |
|
|
}
|
344 |
|
|
|
345 |
|
|
|
346 |
|
|
/* common buffer of tasklet and interrupt to send/receive messages */
|
347 |
|
|
static u32 mixart_msg_data[MSG_DEFAULT_SIZE / 4];
|
348 |
|
|
|
349 |
|
|
|
350 |
|
|
void snd_mixart_msg_tasklet(unsigned long arg)
|
351 |
|
|
{
|
352 |
|
|
struct mixart_mgr *mgr = ( struct mixart_mgr*)(arg);
|
353 |
|
|
struct mixart_msg resp;
|
354 |
|
|
u32 msg, addr, type;
|
355 |
|
|
int err;
|
356 |
|
|
|
357 |
|
|
spin_lock(&mgr->lock);
|
358 |
|
|
|
359 |
|
|
while (mgr->msg_fifo_readptr != mgr->msg_fifo_writeptr) {
|
360 |
|
|
msg = mgr->msg_fifo[mgr->msg_fifo_readptr];
|
361 |
|
|
mgr->msg_fifo_readptr++;
|
362 |
|
|
mgr->msg_fifo_readptr %= MSG_FIFO_SIZE;
|
363 |
|
|
|
364 |
|
|
/* process the message ... */
|
365 |
|
|
addr = msg & ~MSG_TYPE_MASK;
|
366 |
|
|
type = msg & MSG_TYPE_MASK;
|
367 |
|
|
|
368 |
|
|
switch (type) {
|
369 |
|
|
case MSG_TYPE_ANSWER:
|
370 |
|
|
/* answer to a message on that we did not wait for (send_msg_nonblock) */
|
371 |
|
|
resp.message_id = 0;
|
372 |
|
|
resp.data = mixart_msg_data;
|
373 |
|
|
resp.size = sizeof(mixart_msg_data);
|
374 |
|
|
err = get_msg(mgr, &resp, addr);
|
375 |
|
|
if( err < 0 ) {
|
376 |
|
|
snd_printk(KERN_ERR "tasklet: error(%d) reading mf %x\n", err, msg);
|
377 |
|
|
break;
|
378 |
|
|
}
|
379 |
|
|
|
380 |
|
|
switch(resp.message_id) {
|
381 |
|
|
case MSG_STREAM_START_INPUT_STAGE_PACKET:
|
382 |
|
|
case MSG_STREAM_START_OUTPUT_STAGE_PACKET:
|
383 |
|
|
case MSG_STREAM_STOP_INPUT_STAGE_PACKET:
|
384 |
|
|
case MSG_STREAM_STOP_OUTPUT_STAGE_PACKET:
|
385 |
|
|
if(mixart_msg_data[0])
|
386 |
|
|
snd_printk(KERN_ERR "tasklet : error MSG_STREAM_ST***_***PUT_STAGE_PACKET status=%x\n", mixart_msg_data[0]);
|
387 |
|
|
break;
|
388 |
|
|
default:
|
389 |
|
|
snd_printdd("tasklet received mf(%x) : msg_id(%x) uid(%x, %x) size(%zd)\n",
|
390 |
|
|
msg, resp.message_id, resp.uid.object_id, resp.uid.desc, resp.size);
|
391 |
|
|
break;
|
392 |
|
|
}
|
393 |
|
|
break;
|
394 |
|
|
case MSG_TYPE_NOTIFY:
|
395 |
|
|
/* msg contains no address ! do not get_msg() ! */
|
396 |
|
|
case MSG_TYPE_COMMAND:
|
397 |
|
|
/* get_msg() necessary */
|
398 |
|
|
default:
|
399 |
|
|
snd_printk(KERN_ERR "tasklet doesn't know what to do with message %x\n", msg);
|
400 |
|
|
} /* switch type */
|
401 |
|
|
|
402 |
|
|
/* decrement counter */
|
403 |
|
|
atomic_dec(&mgr->msg_processed);
|
404 |
|
|
|
405 |
|
|
} /* while there is a msg in fifo */
|
406 |
|
|
|
407 |
|
|
spin_unlock(&mgr->lock);
|
408 |
|
|
}
|
409 |
|
|
|
410 |
|
|
|
411 |
|
|
irqreturn_t snd_mixart_interrupt(int irq, void *dev_id)
|
412 |
|
|
{
|
413 |
|
|
struct mixart_mgr *mgr = dev_id;
|
414 |
|
|
int err;
|
415 |
|
|
struct mixart_msg resp;
|
416 |
|
|
|
417 |
|
|
u32 msg;
|
418 |
|
|
u32 it_reg;
|
419 |
|
|
|
420 |
|
|
spin_lock(&mgr->lock);
|
421 |
|
|
|
422 |
|
|
it_reg = readl_le(MIXART_REG(mgr, MIXART_PCI_OMISR_OFFSET));
|
423 |
|
|
if( !(it_reg & MIXART_OIDI) ) {
|
424 |
|
|
/* this device did not cause the interrupt */
|
425 |
|
|
spin_unlock(&mgr->lock);
|
426 |
|
|
return IRQ_NONE;
|
427 |
|
|
}
|
428 |
|
|
|
429 |
|
|
/* mask all interrupts */
|
430 |
|
|
writel_le(MIXART_HOST_ALL_INTERRUPT_MASKED, MIXART_REG(mgr, MIXART_PCI_OMIMR_OFFSET));
|
431 |
|
|
|
432 |
|
|
/* outdoorbell register clear */
|
433 |
|
|
it_reg = readl(MIXART_REG(mgr, MIXART_PCI_ODBR_OFFSET));
|
434 |
|
|
writel(it_reg, MIXART_REG(mgr, MIXART_PCI_ODBR_OFFSET));
|
435 |
|
|
|
436 |
|
|
/* clear interrupt */
|
437 |
|
|
writel_le( MIXART_OIDI, MIXART_REG(mgr, MIXART_PCI_OMISR_OFFSET) );
|
438 |
|
|
|
439 |
|
|
/* process interrupt */
|
440 |
|
|
while (retrieve_msg_frame(mgr, &msg)) {
|
441 |
|
|
|
442 |
|
|
switch (msg & MSG_TYPE_MASK) {
|
443 |
|
|
case MSG_TYPE_COMMAND:
|
444 |
|
|
resp.message_id = 0;
|
445 |
|
|
resp.data = mixart_msg_data;
|
446 |
|
|
resp.size = sizeof(mixart_msg_data);
|
447 |
|
|
err = get_msg(mgr, &resp, msg & ~MSG_TYPE_MASK);
|
448 |
|
|
if( err < 0 ) {
|
449 |
|
|
snd_printk(KERN_ERR "interrupt: error(%d) reading mf %x\n", err, msg);
|
450 |
|
|
break;
|
451 |
|
|
}
|
452 |
|
|
|
453 |
|
|
if(resp.message_id == MSG_SERVICES_TIMER_NOTIFY) {
|
454 |
|
|
int i;
|
455 |
|
|
struct mixart_timer_notify *notify;
|
456 |
|
|
notify = (struct mixart_timer_notify *)mixart_msg_data;
|
457 |
|
|
|
458 |
|
|
for(i=0; i<notify->stream_count; i++) {
|
459 |
|
|
|
460 |
|
|
u32 buffer_id = notify->streams[i].buffer_id;
|
461 |
|
|
unsigned int chip_number = (buffer_id & MIXART_NOTIFY_CARD_MASK) >> MIXART_NOTIFY_CARD_OFFSET; /* card0 to 3 */
|
462 |
|
|
unsigned int pcm_number = (buffer_id & MIXART_NOTIFY_PCM_MASK ) >> MIXART_NOTIFY_PCM_OFFSET; /* pcm0 to 3 */
|
463 |
|
|
unsigned int sub_number = buffer_id & MIXART_NOTIFY_SUBS_MASK; /* 0 to MIXART_PLAYBACK_STREAMS */
|
464 |
|
|
unsigned int is_capture = ((buffer_id & MIXART_NOTIFY_CAPT_MASK) != 0); /* playback == 0 / capture == 1 */
|
465 |
|
|
|
466 |
|
|
struct snd_mixart *chip = mgr->chip[chip_number];
|
467 |
|
|
struct mixart_stream *stream;
|
468 |
|
|
|
469 |
|
|
if ((chip_number >= mgr->num_cards) || (pcm_number >= MIXART_PCM_TOTAL) || (sub_number >= MIXART_PLAYBACK_STREAMS)) {
|
470 |
|
|
snd_printk(KERN_ERR "error MSG_SERVICES_TIMER_NOTIFY buffer_id (%x) pos(%d)\n",
|
471 |
|
|
buffer_id, notify->streams[i].sample_pos_low_part);
|
472 |
|
|
break;
|
473 |
|
|
}
|
474 |
|
|
|
475 |
|
|
if (is_capture)
|
476 |
|
|
stream = &chip->capture_stream[pcm_number];
|
477 |
|
|
else
|
478 |
|
|
stream = &chip->playback_stream[pcm_number][sub_number];
|
479 |
|
|
|
480 |
|
|
if (stream->substream && (stream->status == MIXART_STREAM_STATUS_RUNNING)) {
|
481 |
|
|
struct snd_pcm_runtime *runtime = stream->substream->runtime;
|
482 |
|
|
int elapsed = 0;
|
483 |
|
|
u64 sample_count = ((u64)notify->streams[i].sample_pos_high_part) << 32;
|
484 |
|
|
sample_count |= notify->streams[i].sample_pos_low_part;
|
485 |
|
|
|
486 |
|
|
while (1) {
|
487 |
|
|
u64 new_elapse_pos = stream->abs_period_elapsed + runtime->period_size;
|
488 |
|
|
|
489 |
|
|
if (new_elapse_pos > sample_count) {
|
490 |
|
|
break; /* while */
|
491 |
|
|
}
|
492 |
|
|
else {
|
493 |
|
|
elapsed = 1;
|
494 |
|
|
stream->buf_periods++;
|
495 |
|
|
if (stream->buf_periods >= runtime->periods)
|
496 |
|
|
stream->buf_periods = 0;
|
497 |
|
|
|
498 |
|
|
stream->abs_period_elapsed = new_elapse_pos;
|
499 |
|
|
}
|
500 |
|
|
}
|
501 |
|
|
stream->buf_period_frag = (u32)( sample_count - stream->abs_period_elapsed );
|
502 |
|
|
|
503 |
|
|
if(elapsed) {
|
504 |
|
|
spin_unlock(&mgr->lock);
|
505 |
|
|
snd_pcm_period_elapsed(stream->substream);
|
506 |
|
|
spin_lock(&mgr->lock);
|
507 |
|
|
}
|
508 |
|
|
}
|
509 |
|
|
}
|
510 |
|
|
break;
|
511 |
|
|
}
|
512 |
|
|
if(resp.message_id == MSG_SERVICES_REPORT_TRACES) {
|
513 |
|
|
if(resp.size > 1) {
|
514 |
|
|
#ifndef __BIG_ENDIAN
|
515 |
|
|
/* Traces are text: the swapped msg_data has to be swapped back ! */
|
516 |
|
|
int i;
|
517 |
|
|
for(i=0; i<(resp.size/4); i++) {
|
518 |
|
|
(mixart_msg_data)[i] = cpu_to_be32((mixart_msg_data)[i]);
|
519 |
|
|
}
|
520 |
|
|
#endif
|
521 |
|
|
((char*)mixart_msg_data)[resp.size - 1] = 0;
|
522 |
|
|
snd_printdd("MIXART TRACE : %s\n", (char*)mixart_msg_data);
|
523 |
|
|
}
|
524 |
|
|
break;
|
525 |
|
|
}
|
526 |
|
|
|
527 |
|
|
snd_printdd("command %x not handled\n", resp.message_id);
|
528 |
|
|
break;
|
529 |
|
|
|
530 |
|
|
case MSG_TYPE_NOTIFY:
|
531 |
|
|
if(msg & MSG_CANCEL_NOTIFY_MASK) {
|
532 |
|
|
msg &= ~MSG_CANCEL_NOTIFY_MASK;
|
533 |
|
|
snd_printk(KERN_ERR "canceled notification %x !\n", msg);
|
534 |
|
|
}
|
535 |
|
|
/* no break, continue ! */
|
536 |
|
|
case MSG_TYPE_ANSWER:
|
537 |
|
|
/* answer or notification to a message we are waiting for*/
|
538 |
|
|
spin_lock(&mgr->msg_lock);
|
539 |
|
|
if( (msg & ~MSG_TYPE_MASK) == mgr->pending_event ) {
|
540 |
|
|
wake_up(&mgr->msg_sleep);
|
541 |
|
|
mgr->pending_event = 0;
|
542 |
|
|
}
|
543 |
|
|
/* answer to a message we did't want to wait for */
|
544 |
|
|
else {
|
545 |
|
|
mgr->msg_fifo[mgr->msg_fifo_writeptr] = msg;
|
546 |
|
|
mgr->msg_fifo_writeptr++;
|
547 |
|
|
mgr->msg_fifo_writeptr %= MSG_FIFO_SIZE;
|
548 |
|
|
tasklet_hi_schedule(&mgr->msg_taskq);
|
549 |
|
|
}
|
550 |
|
|
spin_unlock(&mgr->msg_lock);
|
551 |
|
|
break;
|
552 |
|
|
case MSG_TYPE_REQUEST:
|
553 |
|
|
default:
|
554 |
|
|
snd_printdd("interrupt received request %x\n", msg);
|
555 |
|
|
/* TODO : are there things to do here ? */
|
556 |
|
|
break;
|
557 |
|
|
} /* switch on msg type */
|
558 |
|
|
} /* while there are msgs */
|
559 |
|
|
|
560 |
|
|
/* allow interrupt again */
|
561 |
|
|
writel_le( MIXART_ALLOW_OUTBOUND_DOORBELL, MIXART_REG( mgr, MIXART_PCI_OMIMR_OFFSET));
|
562 |
|
|
|
563 |
|
|
spin_unlock(&mgr->lock);
|
564 |
|
|
|
565 |
|
|
return IRQ_HANDLED;
|
566 |
|
|
}
|
567 |
|
|
|
568 |
|
|
|
569 |
|
|
void snd_mixart_init_mailbox(struct mixart_mgr *mgr)
|
570 |
|
|
{
|
571 |
|
|
writel( 0, MIXART_MEM( mgr, MSG_HOST_RSC_PROTECTION ) );
|
572 |
|
|
writel( 0, MIXART_MEM( mgr, MSG_AGENT_RSC_PROTECTION ) );
|
573 |
|
|
|
574 |
|
|
/* allow outbound messagebox to generate interrupts */
|
575 |
|
|
if(mgr->irq >= 0) {
|
576 |
|
|
writel_le( MIXART_ALLOW_OUTBOUND_DOORBELL, MIXART_REG( mgr, MIXART_PCI_OMIMR_OFFSET));
|
577 |
|
|
}
|
578 |
|
|
return;
|
579 |
|
|
}
|
580 |
|
|
|
581 |
|
|
void snd_mixart_exit_mailbox(struct mixart_mgr *mgr)
|
582 |
|
|
{
|
583 |
|
|
/* no more interrupts on outbound messagebox */
|
584 |
|
|
writel_le( MIXART_HOST_ALL_INTERRUPT_MASKED, MIXART_REG( mgr, MIXART_PCI_OMIMR_OFFSET));
|
585 |
|
|
return;
|
586 |
|
|
}
|
587 |
|
|
|
588 |
|
|
void snd_mixart_reset_board(struct mixart_mgr *mgr)
|
589 |
|
|
{
|
590 |
|
|
/* reset miXart */
|
591 |
|
|
writel_be( 1, MIXART_REG(mgr, MIXART_BA1_BRUTAL_RESET_OFFSET) );
|
592 |
|
|
return;
|
593 |
|
|
}
|