static irqreturn_t
snd_nm256_interrupt(int irq, void *dev_id, struct pt_regs *dummy)
{
nm256_t *chip = dev_id;
u16 status;
u8 cbyte;
status = snd_nm256_readw(chip, NM_INT_REG);
/* Not ours. */
if (status == 0) {
snd_nm256_intr_check(chip);
return IRQ_NONE;
}
chip->badintrcount = 0;
/* Rather boring; check for individual interrupts and process them. */
spin_lock(&chip->reg_lock);
if (status & NM_PLAYBACK_INT) {
status &= ~NM_PLAYBACK_INT;
NM_ACK_INT(chip, NM_PLAYBACK_INT);
snd_nm256_playback_update(chip);
}
if (status & NM_RECORD_INT) {
status &= ~NM_RECORD_INT;
NM_ACK_INT(chip, NM_RECORD_INT);
snd_nm256_capture_update(chip);
}
if (status & NM_MISC_INT_1) {
status &= ~NM_MISC_INT_1;
NM_ACK_INT(chip, NM_MISC_INT_1);
snd_printd("NM256: Got misc interrupt #1\n");
snd_nm256_writew(chip, NM_INT_REG, 0x8000);
cbyte = snd_nm256_readb(chip, 0x400);
snd_nm256_writeb(chip, 0x400, cbyte | 2);
}
if (status & NM_MISC_INT_2) {
status &= ~NM_MISC_INT_2;
NM_ACK_INT(chip, NM_MISC_INT_2);
snd_printd("NM256: Got misc interrupt #2\n");
cbyte = snd_nm256_readb(chip, 0x400);
snd_nm256_writeb(chip, 0x400, cbyte & ~2);
}
/* Unknown interrupt. */
if (status) {
snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n",
status);
/* Pray. */
NM_ACK_INT(chip, status);
}
spin_unlock(&chip->reg_lock);
return IRQ_HANDLED;
}
static irqreturn_t
snd_nm256_interrupt(int irq, void *dev_id)
{
struct nm256 *chip = dev_id;
u16 status;
u8 cbyte;
status = snd_nm256_readw(chip, NM_INT_REG);
if (status == 0)
return snd_nm256_intr_check(chip);
chip->badintrcount = 0;
spin_lock(&chip->reg_lock);
if (status & NM_PLAYBACK_INT) {
status &= ~NM_PLAYBACK_INT;
NM_ACK_INT(chip, NM_PLAYBACK_INT);
snd_nm256_playback_update(chip);
}
if (status & NM_RECORD_INT) {
status &= ~NM_RECORD_INT;
NM_ACK_INT(chip, NM_RECORD_INT);
snd_nm256_capture_update(chip);
}
if (status & NM_MISC_INT_1) {
status &= ~NM_MISC_INT_1;
NM_ACK_INT(chip, NM_MISC_INT_1);
snd_printd("NM256: Got misc interrupt #1\n");
snd_nm256_writew(chip, NM_INT_REG, 0x8000);
cbyte = snd_nm256_readb(chip, 0x400);
snd_nm256_writeb(chip, 0x400, cbyte | 2);
}
if (status & NM_MISC_INT_2) {
status &= ~NM_MISC_INT_2;
NM_ACK_INT(chip, NM_MISC_INT_2);
snd_printd("NM256: Got misc interrupt #2\n");
cbyte = snd_nm256_readb(chip, 0x400);
snd_nm256_writeb(chip, 0x400, cbyte & ~2);
}
if (status) {
snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n",
status);
NM_ACK_INT(chip, status);
}
spin_unlock(&chip->reg_lock);
return IRQ_HANDLED;
}
static void
nm256_interrupt (int irq, void *dev_id, struct pt_regs *dummy)
{
struct nm256_info *card = (struct nm256_info *)dev_id;
u16 status;
static int badintrcount = 0;
if ((card == NULL) || (card->magsig != NM_MAGIC_SIG)) {
printk (KERN_ERR "NM256: Bad card pointer\n");
return;
}
status = nm256_readPort16 (card, 2, NM_INT_REG);
/* Not ours. */
if (status == 0) {
if (badintrcount++ > 1000) {
/*
* I'm not sure if the best thing is to stop the card from
* playing or just release the interrupt (after all, we're in
* a bad situation, so doing fancy stuff may not be such a good
* idea).
*
* I worry about the card engine continuing to play noise
* over and over, however--that could become a very
* obnoxious problem. And we know that when this usually
* happens things are fairly safe, it just means the user's
* inserted a PCMCIA card and someone's spamming us with IRQ 9s.
*/
if (card->playing)
stopPlay (card);
if (card->recording)
stopRecord (card);
badintrcount = 0;
}
return;
}
badintrcount = 0;
/* Rather boring; check for individual interrupts and process them. */
if (status & NM_PLAYBACK_INT) {
status &= ~NM_PLAYBACK_INT;
NM_ACK_INT (card, NM_PLAYBACK_INT);
if (card->playing)
nm256_get_new_block (card);
}
if (status & NM_RECORD_INT) {
status &= ~NM_RECORD_INT;
NM_ACK_INT (card, NM_RECORD_INT);
if (card->recording)
nm256_read_block (card);
}
if (status & NM_MISC_INT_1) {
u8 cbyte;
status &= ~NM_MISC_INT_1;
printk (KERN_ERR "NM256: Got misc interrupt #1\n");
NM_ACK_INT (card, NM_MISC_INT_1);
nm256_writePort16 (card, 2, NM_INT_REG, 0x8000);
cbyte = nm256_readPort8 (card, 2, 0x400);
nm256_writePort8 (card, 2, 0x400, cbyte | 2);
}
if (status & NM_MISC_INT_2) {
u8 cbyte;
status &= ~NM_MISC_INT_2;
printk (KERN_ERR "NM256: Got misc interrupt #2\n");
NM_ACK_INT (card, NM_MISC_INT_2);
cbyte = nm256_readPort8 (card, 2, 0x400);
nm256_writePort8 (card, 2, 0x400, cbyte & ~2);
}
/* Unknown interrupt. */
if (status) {
printk (KERN_ERR "NM256: Fire in the hole! Unknown status 0x%x\n",
status);
/* Pray. */
NM_ACK_INT (card, status);
}
}