Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/sound/pci/mixart/mixart_core.c b/sound/pci/mixart/mixart_core.c
new file mode 100644
index 0000000..ba0027f
--- /dev/null
+++ b/sound/pci/mixart/mixart_core.c
@@ -0,0 +1,588 @@
+/*
+ * Driver for Digigram miXart soundcards
+ *
+ * low level interface with interrupt handling and mail box implementation
+ *
+ * Copyright (c) 2003 by Digigram <alsa@digigram.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <sound/driver.h>
+#include <linux/interrupt.h>
+#include <asm/io.h>
+#include <sound/core.h>
+#include "mixart.h"
+#include "mixart_hwdep.h"
+#include "mixart_core.h"
+
+
+#define MSG_TIMEOUT_JIFFIES (400 * HZ) / 1000 /* 400 ms */
+
+#define MSG_DESCRIPTOR_SIZE 0x24
+#define MSG_HEADER_SIZE (MSG_DESCRIPTOR_SIZE + 4)
+
+#define MSG_DEFAULT_SIZE 512
+
+#define MSG_TYPE_MASK 0x00000003 /* mask for following types */
+#define MSG_TYPE_NOTIFY 0 /* embedded -> driver (only notification, do not get_msg() !) */
+#define MSG_TYPE_COMMAND 1 /* driver <-> embedded (a command has no answer) */
+#define MSG_TYPE_REQUEST 2 /* driver -> embedded (request will get an answer back) */
+#define MSG_TYPE_ANSWER 3 /* embedded -> driver */
+#define MSG_CANCEL_NOTIFY_MASK 0x80000000 /* this bit is set for a notification that has been canceled */
+
+
+static int retrieve_msg_frame(mixart_mgr_t *mgr, u32 *msg_frame)
+{
+ /* read the message frame fifo */
+ u32 headptr, tailptr;
+
+ tailptr = readl_be(MIXART_MEM(mgr, MSG_OUTBOUND_POST_TAIL));
+ headptr = readl_be(MIXART_MEM(mgr, MSG_OUTBOUND_POST_HEAD));
+
+ if (tailptr == headptr)
+ return 0; /* no message posted */
+
+ snd_assert( tailptr >= MSG_OUTBOUND_POST_STACK, return 0); /* error */
+ snd_assert( tailptr < (MSG_OUTBOUND_POST_STACK+MSG_BOUND_STACK_SIZE), return 0); /* error */
+
+ *msg_frame = readl_be(MIXART_MEM(mgr, tailptr));
+
+ /* increment the tail index */
+ tailptr += 4;
+ if( tailptr >= (MSG_OUTBOUND_POST_STACK+MSG_BOUND_STACK_SIZE) )
+ tailptr = MSG_OUTBOUND_POST_STACK;
+ writel_be(tailptr, MIXART_MEM(mgr, MSG_OUTBOUND_POST_TAIL));
+
+ return 1;
+}
+
+static int get_msg(mixart_mgr_t *mgr, mixart_msg_t *resp, u32 msg_frame_address )
+{
+ unsigned long flags;
+ u32 headptr;
+ u32 size;
+ int err;
+#ifndef __BIG_ENDIAN
+ unsigned int i;
+#endif
+
+ spin_lock_irqsave(&mgr->msg_lock, flags);
+ err = 0;
+
+ /* copy message descriptor from miXart to driver */
+ size = readl_be(MIXART_MEM(mgr, msg_frame_address)); /* size of descriptor + response */
+ resp->message_id = readl_be(MIXART_MEM(mgr, msg_frame_address + 4)); /* dwMessageID */
+ resp->uid.object_id = readl_be(MIXART_MEM(mgr, msg_frame_address + 8)); /* uidDest */
+ resp->uid.desc = readl_be(MIXART_MEM(mgr, msg_frame_address + 12)); /* */
+
+ if( (size < MSG_DESCRIPTOR_SIZE) || (resp->size < (size - MSG_DESCRIPTOR_SIZE))) {
+ err = -EINVAL;
+ snd_printk(KERN_ERR "problem with response size = %d\n", size);
+ goto _clean_exit;
+ }
+ size -= MSG_DESCRIPTOR_SIZE;
+
+ memcpy_fromio(resp->data, MIXART_MEM(mgr, msg_frame_address + MSG_HEADER_SIZE ), size);
+ resp->size = size;
+
+ /* swap if necessary */
+#ifndef __BIG_ENDIAN
+ size /= 4; /* u32 size */
+ for(i=0; i < size; i++) {
+ ((u32*)resp->data)[i] = be32_to_cpu(((u32*)resp->data)[i]);
+ }
+#endif
+
+ /*
+ * free message frame address
+ */
+ headptr = readl_be(MIXART_MEM(mgr, MSG_OUTBOUND_FREE_HEAD));
+
+ if( (headptr < MSG_OUTBOUND_FREE_STACK) || ( headptr >= (MSG_OUTBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE))) {
+ err = -EINVAL;
+ goto _clean_exit;
+ }
+
+ /* give address back to outbound fifo */
+ writel_be(msg_frame_address, MIXART_MEM(mgr, headptr));
+
+ /* increment the outbound free head */
+ headptr += 4;
+ if( headptr >= (MSG_OUTBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE) )
+ headptr = MSG_OUTBOUND_FREE_STACK;
+
+ writel_be(headptr, MIXART_MEM(mgr, MSG_OUTBOUND_FREE_HEAD));
+
+ _clean_exit:
+ spin_unlock_irqrestore(&mgr->msg_lock, flags);
+
+ return err;
+}
+
+
+/*
+ * send a message to miXart. return: the msg_frame used for this message
+ */
+/* call with mgr->msg_lock held! */
+static int send_msg( mixart_mgr_t *mgr,
+ mixart_msg_t *msg,
+ int max_answersize,
+ int mark_pending,
+ u32 *msg_event)
+{
+ u32 headptr, tailptr;
+ u32 msg_frame_address;
+ int err, i;
+
+ snd_assert(msg->size % 4 == 0, return -EINVAL);
+
+ err = 0;
+
+ /* get message frame address */
+ tailptr = readl_be(MIXART_MEM(mgr, MSG_INBOUND_FREE_TAIL));
+ headptr = readl_be(MIXART_MEM(mgr, MSG_INBOUND_FREE_HEAD));
+
+ if (tailptr == headptr) {
+ snd_printk(KERN_ERR "error: no message frame available\n");
+ return -EBUSY;
+ }
+
+ if( (tailptr < MSG_INBOUND_FREE_STACK) || (tailptr >= (MSG_INBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE))) {
+ return -EINVAL;
+ }
+
+ msg_frame_address = readl_be(MIXART_MEM(mgr, tailptr));
+ writel(0, MIXART_MEM(mgr, tailptr)); /* set address to zero on this fifo position */
+
+ /* increment the inbound free tail */
+ tailptr += 4;
+ if( tailptr >= (MSG_INBOUND_FREE_STACK+MSG_BOUND_STACK_SIZE) )
+ tailptr = MSG_INBOUND_FREE_STACK;
+
+ writel_be(tailptr, MIXART_MEM(mgr, MSG_INBOUND_FREE_TAIL));
+
+ /* TODO : use memcpy_toio() with intermediate buffer to copy the message */
+
+ /* copy message descriptor to card memory */
+ writel_be( msg->size + MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address) ); /* size of descriptor + request */
+ writel_be( msg->message_id , MIXART_MEM(mgr, msg_frame_address + 4) ); /* dwMessageID */
+ writel_be( msg->uid.object_id, MIXART_MEM(mgr, msg_frame_address + 8) ); /* uidDest */
+ writel_be( msg->uid.desc, MIXART_MEM(mgr, msg_frame_address + 12) ); /* */
+ writel_be( MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address + 16) ); /* SizeHeader */
+ writel_be( MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address + 20) ); /* OffsetDLL_T16 */
+ writel_be( msg->size, MIXART_MEM(mgr, msg_frame_address + 24) ); /* SizeDLL_T16 */
+ writel_be( MSG_DESCRIPTOR_SIZE, MIXART_MEM(mgr, msg_frame_address + 28) ); /* OffsetDLL_DRV */
+ writel_be( 0, MIXART_MEM(mgr, msg_frame_address + 32) ); /* SizeDLL_DRV */
+ writel_be( MSG_DESCRIPTOR_SIZE + max_answersize, MIXART_MEM(mgr, msg_frame_address + 36) ); /* dwExpectedAnswerSize */
+
+ /* copy message data to card memory */
+ for( i=0; i < msg->size; i+=4 ) {
+ writel_be( *(u32*)(msg->data + i), MIXART_MEM(mgr, MSG_HEADER_SIZE + msg_frame_address + i) );
+ }
+
+ if( mark_pending ) {
+ if( *msg_event ) {
+ /* the pending event is the notification we wait for ! */
+ mgr->pending_event = *msg_event;
+ }
+ else {
+ /* the pending event is the answer we wait for (same address than the request)! */
+ mgr->pending_event = msg_frame_address;
+
+ /* copy address back to caller */
+ *msg_event = msg_frame_address;
+ }
+ }
+
+ /* mark the frame as a request (will have an answer) */
+ msg_frame_address |= MSG_TYPE_REQUEST;
+
+ /* post the frame */
+ headptr = readl_be(MIXART_MEM(mgr, MSG_INBOUND_POST_HEAD));
+
+ if( (headptr < MSG_INBOUND_POST_STACK) || (headptr >= (MSG_INBOUND_POST_STACK+MSG_BOUND_STACK_SIZE))) {
+ return -EINVAL;
+ }
+
+ writel_be(msg_frame_address, MIXART_MEM(mgr, headptr));
+
+ /* increment the inbound post head */
+ headptr += 4;
+ if( headptr >= (MSG_INBOUND_POST_STACK+MSG_BOUND_STACK_SIZE) )
+ headptr = MSG_INBOUND_POST_STACK;
+
+ writel_be(headptr, MIXART_MEM(mgr, MSG_INBOUND_POST_HEAD));
+
+ return 0;
+}
+
+
+int snd_mixart_send_msg(mixart_mgr_t *mgr, mixart_msg_t *request, int max_resp_size, void *resp_data)
+{
+ mixart_msg_t resp;
+ u32 msg_frame = 0; /* set to 0, so it's no notification to wait for, but the answer */
+ int err;
+ wait_queue_t wait;
+ long timeout;
+
+ down(&mgr->msg_mutex);
+
+ init_waitqueue_entry(&wait, current);
+
+ spin_lock_irq(&mgr->msg_lock);
+ /* send the message */
+ err = send_msg(mgr, request, max_resp_size, 1, &msg_frame); /* send and mark the answer pending */
+ if (err) {
+ spin_unlock_irq(&mgr->msg_lock);
+ up(&mgr->msg_mutex);
+ return err;
+ }
+
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ add_wait_queue(&mgr->msg_sleep, &wait);
+ spin_unlock_irq(&mgr->msg_lock);
+ timeout = schedule_timeout(MSG_TIMEOUT_JIFFIES);
+ remove_wait_queue(&mgr->msg_sleep, &wait);
+
+ if (! timeout) {
+ /* error - no ack */
+ up(&mgr->msg_mutex);
+ snd_printk(KERN_ERR "error: no reponse on msg %x\n", msg_frame);
+ return -EIO;
+ }
+
+ /* retrieve the answer into the same mixart_msg_t */
+ resp.message_id = 0;
+ resp.uid = (mixart_uid_t){0,0};
+ resp.data = resp_data;
+ resp.size = max_resp_size;
+
+ err = get_msg(mgr, &resp, msg_frame);
+
+ if( request->message_id != resp.message_id )
+ snd_printk(KERN_ERR "REPONSE ERROR!\n");
+
+ up(&mgr->msg_mutex);
+ return err;
+}
+
+
+int snd_mixart_send_msg_wait_notif(mixart_mgr_t *mgr, mixart_msg_t *request, u32 notif_event)
+{
+ int err;
+ wait_queue_t wait;
+ long timeout;
+
+ snd_assert(notif_event != 0, return -EINVAL);
+ snd_assert((notif_event & MSG_TYPE_MASK) == MSG_TYPE_NOTIFY, return -EINVAL);
+ snd_assert((notif_event & MSG_CANCEL_NOTIFY_MASK) == 0, return -EINVAL);
+
+ down(&mgr->msg_mutex);
+
+ init_waitqueue_entry(&wait, current);
+
+ spin_lock_irq(&mgr->msg_lock);
+ /* send the message */
+ err = send_msg(mgr, request, MSG_DEFAULT_SIZE, 1, ¬if_event); /* send and mark the notification event pending */
+ if(err) {
+ spin_unlock_irq(&mgr->msg_lock);
+ up(&mgr->msg_mutex);
+ return err;
+ }
+
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ add_wait_queue(&mgr->msg_sleep, &wait);
+ spin_unlock_irq(&mgr->msg_lock);
+ timeout = schedule_timeout(MSG_TIMEOUT_JIFFIES);
+ remove_wait_queue(&mgr->msg_sleep, &wait);
+
+ if (! timeout) {
+ /* error - no ack */
+ up(&mgr->msg_mutex);
+ snd_printk(KERN_ERR "error: notification %x not received\n", notif_event);
+ return -EIO;
+ }
+
+ up(&mgr->msg_mutex);
+ return 0;
+}
+
+
+int snd_mixart_send_msg_nonblock(mixart_mgr_t *mgr, mixart_msg_t *request)
+{
+ u32 message_frame;
+ unsigned long flags;
+ int err;
+
+ /* just send the message (do not mark it as a pending one) */
+ spin_lock_irqsave(&mgr->msg_lock, flags);
+ err = send_msg(mgr, request, MSG_DEFAULT_SIZE, 0, &message_frame);
+ spin_unlock_irqrestore(&mgr->msg_lock, flags);
+
+ /* the answer will be handled by snd_mixart_msg_tasklet() */
+ atomic_inc(&mgr->msg_processed);
+
+ return err;
+}
+
+
+/* common buffer of tasklet and interrupt to send/receive messages */
+static u32 mixart_msg_data[MSG_DEFAULT_SIZE / 4];
+
+
+void snd_mixart_msg_tasklet( unsigned long arg)
+{
+ mixart_mgr_t *mgr = ( mixart_mgr_t*)(arg);
+ mixart_msg_t resp;
+ u32 msg, addr, type;
+ int err;
+
+ spin_lock(&mgr->lock);
+
+ while (mgr->msg_fifo_readptr != mgr->msg_fifo_writeptr) {
+ msg = mgr->msg_fifo[mgr->msg_fifo_readptr];
+ mgr->msg_fifo_readptr++;
+ mgr->msg_fifo_readptr %= MSG_FIFO_SIZE;
+
+ /* process the message ... */
+ addr = msg & ~MSG_TYPE_MASK;
+ type = msg & MSG_TYPE_MASK;
+
+ switch (type) {
+ case MSG_TYPE_ANSWER:
+ /* answer to a message on that we did not wait for (send_msg_nonblock) */
+ resp.message_id = 0;
+ resp.data = mixart_msg_data;
+ resp.size = sizeof(mixart_msg_data);
+ err = get_msg(mgr, &resp, addr);
+ if( err < 0 ) {
+ snd_printk(KERN_ERR "tasklet: error(%d) reading mf %x\n", err, msg);
+ break;
+ }
+
+ switch(resp.message_id) {
+ case MSG_STREAM_START_INPUT_STAGE_PACKET:
+ case MSG_STREAM_START_OUTPUT_STAGE_PACKET:
+ case MSG_STREAM_STOP_INPUT_STAGE_PACKET:
+ case MSG_STREAM_STOP_OUTPUT_STAGE_PACKET:
+ if(mixart_msg_data[0])
+ snd_printk(KERN_ERR "tasklet : error MSG_STREAM_ST***_***PUT_STAGE_PACKET status=%x\n", mixart_msg_data[0]);
+ break;
+ default:
+ snd_printdd("tasklet received mf(%x) : msg_id(%x) uid(%x, %x) size(%zd)\n",
+ msg, resp.message_id, resp.uid.object_id, resp.uid.desc, resp.size);
+ break;
+ }
+ break;
+ case MSG_TYPE_NOTIFY:
+ /* msg contains no address ! do not get_msg() ! */
+ case MSG_TYPE_COMMAND:
+ /* get_msg() necessary */
+ default:
+ snd_printk(KERN_ERR "tasklet doesn't know what to do with message %x\n", msg);
+ } /* switch type */
+
+ /* decrement counter */
+ atomic_dec(&mgr->msg_processed);
+
+ } /* while there is a msg in fifo */
+
+ spin_unlock(&mgr->lock);
+}
+
+
+irqreturn_t snd_mixart_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ mixart_mgr_t *mgr = dev_id;
+ int err;
+ mixart_msg_t resp;
+
+ u32 msg;
+ u32 it_reg;
+
+ spin_lock(&mgr->lock);
+
+ it_reg = readl_le(MIXART_REG(mgr, MIXART_PCI_OMISR_OFFSET));
+ if( !(it_reg & MIXART_OIDI) ) {
+ /* this device did not cause the interrupt */
+ spin_unlock(&mgr->lock);
+ return IRQ_NONE;
+ }
+
+ /* mask all interrupts */
+ writel_le(MIXART_HOST_ALL_INTERRUPT_MASKED, MIXART_REG(mgr, MIXART_PCI_OMIMR_OFFSET));
+
+ /* outdoorbell register clear */
+ it_reg = readl(MIXART_REG(mgr, MIXART_PCI_ODBR_OFFSET));
+ writel(it_reg, MIXART_REG(mgr, MIXART_PCI_ODBR_OFFSET));
+
+ /* clear interrupt */
+ writel_le( MIXART_OIDI, MIXART_REG(mgr, MIXART_PCI_OMISR_OFFSET) );
+
+ /* process interrupt */
+ while (retrieve_msg_frame(mgr, &msg)) {
+
+ switch (msg & MSG_TYPE_MASK) {
+ case MSG_TYPE_COMMAND:
+ resp.message_id = 0;
+ resp.data = mixart_msg_data;
+ resp.size = sizeof(mixart_msg_data);
+ err = get_msg(mgr, &resp, msg & ~MSG_TYPE_MASK);
+ if( err < 0 ) {
+ snd_printk(KERN_ERR "interrupt: error(%d) reading mf %x\n", err, msg);
+ break;
+ }
+
+ if(resp.message_id == MSG_SERVICES_TIMER_NOTIFY) {
+ int i;
+ mixart_timer_notify_t *notify = (mixart_timer_notify_t*)mixart_msg_data;
+
+ for(i=0; i<notify->stream_count; i++) {
+
+ u32 buffer_id = notify->streams[i].buffer_id;
+ unsigned int chip_number = (buffer_id & MIXART_NOTIFY_CARD_MASK) >> MIXART_NOTIFY_CARD_OFFSET; /* card0 to 3 */
+ unsigned int pcm_number = (buffer_id & MIXART_NOTIFY_PCM_MASK ) >> MIXART_NOTIFY_PCM_OFFSET; /* pcm0 to 3 */
+ unsigned int sub_number = buffer_id & MIXART_NOTIFY_SUBS_MASK; /* 0 to MIXART_PLAYBACK_STREAMS */
+ unsigned int is_capture = ((buffer_id & MIXART_NOTIFY_CAPT_MASK) != 0); /* playback == 0 / capture == 1 */
+
+ mixart_t *chip = mgr->chip[chip_number];
+ mixart_stream_t *stream;
+
+ if ((chip_number >= mgr->num_cards) || (pcm_number >= MIXART_PCM_TOTAL) || (sub_number >= MIXART_PLAYBACK_STREAMS)) {
+ snd_printk(KERN_ERR "error MSG_SERVICES_TIMER_NOTIFY buffer_id (%x) pos(%d)\n",
+ buffer_id, notify->streams[i].sample_pos_low_part);
+ break;
+ }
+
+ if (is_capture)
+ stream = &chip->capture_stream[pcm_number];
+ else
+ stream = &chip->playback_stream[pcm_number][sub_number];
+
+ if (stream->substream && (stream->status == MIXART_STREAM_STATUS_RUNNING)) {
+ snd_pcm_runtime_t *runtime = stream->substream->runtime;
+ int elapsed = 0;
+ u64 sample_count = ((u64)notify->streams[i].sample_pos_high_part) << 32;
+ sample_count |= notify->streams[i].sample_pos_low_part;
+
+ while (1) {
+ u64 new_elapse_pos = stream->abs_period_elapsed + runtime->period_size;
+
+ if (new_elapse_pos > sample_count) {
+ break; /* while */
+ }
+ else {
+ elapsed = 1;
+ stream->buf_periods++;
+ if (stream->buf_periods >= runtime->periods)
+ stream->buf_periods = 0;
+
+ stream->abs_period_elapsed = new_elapse_pos;
+ }
+ }
+ stream->buf_period_frag = (u32)( sample_count - stream->abs_period_elapsed );
+
+ if(elapsed) {
+ spin_unlock(&mgr->lock);
+ snd_pcm_period_elapsed(stream->substream);
+ spin_lock(&mgr->lock);
+ }
+ }
+ }
+ break;
+ }
+ if(resp.message_id == MSG_SERVICES_REPORT_TRACES) {
+ if(resp.size > 1) {
+#ifndef __BIG_ENDIAN
+ /* Traces are text: the swapped msg_data has to be swapped back ! */
+ int i;
+ for(i=0; i<(resp.size/4); i++) {
+ (mixart_msg_data)[i] = cpu_to_be32((mixart_msg_data)[i]);
+ }
+#endif
+ ((char*)mixart_msg_data)[resp.size - 1] = 0;
+ snd_printdd("MIXART TRACE : %s\n", (char*)mixart_msg_data);
+ }
+ break;
+ }
+
+ snd_printdd("command %x not handled\n", resp.message_id);
+ break;
+
+ case MSG_TYPE_NOTIFY:
+ if(msg & MSG_CANCEL_NOTIFY_MASK) {
+ msg &= ~MSG_CANCEL_NOTIFY_MASK;
+ snd_printk(KERN_ERR "canceled notification %x !\n", msg);
+ }
+ /* no break, continue ! */
+ case MSG_TYPE_ANSWER:
+ /* answer or notification to a message we are waiting for*/
+ spin_lock(&mgr->msg_lock);
+ if( (msg & ~MSG_TYPE_MASK) == mgr->pending_event ) {
+ wake_up(&mgr->msg_sleep);
+ mgr->pending_event = 0;
+ }
+ /* answer to a message we did't want to wait for */
+ else {
+ mgr->msg_fifo[mgr->msg_fifo_writeptr] = msg;
+ mgr->msg_fifo_writeptr++;
+ mgr->msg_fifo_writeptr %= MSG_FIFO_SIZE;
+ tasklet_hi_schedule(&mgr->msg_taskq);
+ }
+ spin_unlock(&mgr->msg_lock);
+ break;
+ case MSG_TYPE_REQUEST:
+ default:
+ snd_printdd("interrupt received request %x\n", msg);
+ /* TODO : are there things to do here ? */
+ break;
+ } /* switch on msg type */
+ } /* while there are msgs */
+
+ /* allow interrupt again */
+ writel_le( MIXART_ALLOW_OUTBOUND_DOORBELL, MIXART_REG( mgr, MIXART_PCI_OMIMR_OFFSET));
+
+ spin_unlock(&mgr->lock);
+
+ return IRQ_HANDLED;
+}
+
+
+void snd_mixart_init_mailbox(mixart_mgr_t *mgr)
+{
+ writel( 0, MIXART_MEM( mgr, MSG_HOST_RSC_PROTECTION ) );
+ writel( 0, MIXART_MEM( mgr, MSG_AGENT_RSC_PROTECTION ) );
+
+ /* allow outbound messagebox to generate interrupts */
+ if(mgr->irq >= 0) {
+ writel_le( MIXART_ALLOW_OUTBOUND_DOORBELL, MIXART_REG( mgr, MIXART_PCI_OMIMR_OFFSET));
+ }
+ return;
+}
+
+void snd_mixart_exit_mailbox(mixart_mgr_t *mgr)
+{
+ /* no more interrupts on outbound messagebox */
+ writel_le( MIXART_HOST_ALL_INTERRUPT_MASKED, MIXART_REG( mgr, MIXART_PCI_OMIMR_OFFSET));
+ return;
+}
+
+void snd_mixart_reset_board(mixart_mgr_t *mgr)
+{
+ /* reset miXart */
+ writel_be( 1, MIXART_REG(mgr, MIXART_BA1_BRUTAL_RESET_OFFSET) );
+ return;
+}