/*
* Map in the memory ports for CARD, if they aren't already mapped in
* and have been configured. If successful, a zero value is returned;
* otherwise any previously mapped-in areas are released and a non-zero
* value is returned.
*
* This is invoked twice, once for each port. Ideally it would only be
* called once, but we now need to map in the second port in order to
* check how much memory the card has on the 256ZX.
*/
static int
nm256_remap_ports (struct nm256_info *card)
{
int x;
for (x = 0; x < 2; x++) {
if (card->port[x].ptr == NULL && card->port[x].end_offset > 0) {
u32 physaddr
= card->port[x].physaddr + card->port[x].start_offset;
u32 size
= card->port[x].end_offset - card->port[x].start_offset;
card->port[x].ptr = ioremap_nocache (physaddr, size);
if (card->port[x].ptr == NULL) {
printk (KERN_ERR "NM256: Unable to remap port %d\n", x + 1);
nm256_release_ports (card);
return -1;
}
}
}
return 0;
}
static void __devinit
nm256_remove(struct pci_dev *pcidev) {
struct nm256_info *xcard = pci_get_drvdata(pcidev);
struct nm256_info *card,*next_card = NULL;
for (card = nmcard_list; card != NULL; card = next_card) {
next_card = card->next_card;
if (card == xcard) {
stopPlay (card);
stopRecord (card);
if (card->has_irq)
free_irq (card->irq, card);
nm256_release_ports (card);
sound_unload_mixerdev (card->mixer_oss_dev);
sound_unload_audiodev (card->dev[0]);
sound_unload_audiodev (card->dev[1]);
kfree (card);
break;
}
}
if (nmcard_list == card)
nmcard_list = next_card;
}
static int __init
nm256_install(struct pci_dev *pcidev, enum nm256rev rev, char *verstr)
{
struct nm256_info *card;
struct pm_dev *pmdev;
int x;
card = kmalloc (sizeof (struct nm256_info), GFP_KERNEL);
if (card == NULL) {
printk (KERN_ERR "NM256: out of memory!\n");
return 0;
}
card->magsig = NM_MAGIC_SIG;
card->playing = 0;
card->recording = 0;
card->rev = rev;
/* Init the memory port info. */
for (x = 0; x < 2; x++) {
card->port[x].physaddr = RSRCADDRESS (pcidev, x);
card->port[x].ptr = NULL;
card->port[x].start_offset = 0;
card->port[x].end_offset = 0;
}
/* Port 2 is easy. */
card->port[1].start_offset = 0;
card->port[1].end_offset = NM_PORT2_SIZE;
/* Yuck. But we have to map in port 2 so we can check how much RAM the
card has. */
if (nm256_remap_ports (card)) {
kfree (card);
return 0;
}
/*
* The NM256 has two memory ports. The first port is nothing
* more than a chunk of video RAM, which is used as the I/O ring
* buffer. The second port has the actual juicy stuff (like the
* mixer and the playback engine control registers).
*/
if (card->rev == REV_NM256AV) {
/* Ok, try to see if this is a non-AC97 version of the hardware. */
int pval = nm256_readPort16 (card, 2, NM_MIXER_PRESENCE);
if ((pval & NM_PRESENCE_MASK) != NM_PRESENCE_VALUE) {
if (! force_load) {
printk (KERN_ERR "NM256: This doesn't look to me like the AC97-compatible version.\n");
printk (KERN_ERR " You can force the driver to load by passing in the module\n");
printk (KERN_ERR " parameter:\n");
printk (KERN_ERR " force_ac97 = 1\n");
printk (KERN_ERR "\n");
printk (KERN_ERR " More likely, you should be using the appropriate SB-16 or\n");
printk (KERN_ERR " CS4232 driver instead. (If your BIOS has settings for\n");
printk (KERN_ERR " IRQ and/or DMA for the sound card, this is *not* the correct\n");
printk (KERN_ERR " driver to use.)\n");
nm256_release_ports (card);
kfree (card);
return 0;
}
else {
printk (KERN_INFO "NM256: Forcing driver load as per user request.\n");
}
}
else {
/* printk (KERN_INFO "NM256: Congratulations. You're not running Eunice.\n")*/;
}
card->port[0].end_offset = 2560 * 1024;
card->introutine = nm256_interrupt;
card->mixer_status_offset = NM_MIXER_STATUS_OFFSET;
card->mixer_status_mask = NM_MIXER_READY_MASK;
}
else {
/* Not sure if there is any relevant detect for the ZX or not. */
if (nm256_readPort8 (card, 2, 0xa0b) != 0)
card->port[0].end_offset = 6144 * 1024;
else
card->port[0].end_offset = 4096 * 1024;
card->introutine = nm256_interrupt_zx;
card->mixer_status_offset = NM2_MIXER_STATUS_OFFSET;
card->mixer_status_mask = NM2_MIXER_READY_MASK;
}
if (buffertop >= 98304 && buffertop < card->port[0].end_offset)
card->port[0].end_offset = buffertop;
else
nm256_peek_for_sig (card);
card->port[0].start_offset = card->port[0].end_offset - 98304;
printk (KERN_INFO "NM256: Mapping port 1 from 0x%x - 0x%x\n",
card->port[0].start_offset, card->port[0].end_offset);
if (nm256_remap_ports (card)) {
kfree (card);
return 0;
}
/* See if we can get the interrupt. */
card->irq = pcidev->irq;
card->has_irq = 0;
if (nm256_grabInterrupt (card) != 0) {
nm256_release_ports (card);
kfree (card);
return 0;
}
nm256_releaseInterrupt (card);
/*
* Init the board.
*/
card->playbackBufferSize = 16384;
card->recordBufferSize = 16384;
card->coeffBuf = card->port[0].end_offset - NM_MAX_COEFFICIENT;
card->abuf2 = card->coeffBuf - card->recordBufferSize;
card->abuf1 = card->abuf2 - card->playbackBufferSize;
card->allCoeffBuf = card->abuf2 - (NM_TOTAL_COEFF_COUNT * 4);
/* Fixed setting. */
card->mixer = NM_MIXER_OFFSET;
card->mixer_values_init = 0;
card->is_open_play = 0;
card->is_open_record = 0;
card->coeffsCurrent = 0;
card->opencnt[0] = 0; card->opencnt[1] = 0;
/* Reasonable default settings, but largely unnecessary. */
for (x = 0; x < 2; x++) {
card->sinfo[x].bits = 8;
card->sinfo[x].stereo = 0;
card->sinfo[x].samplerate = 8000;
}
nm256_initHw (card);
for (x = 0; x < 2; x++) {
if ((card->dev[x] =
sound_install_audiodrv(AUDIO_DRIVER_VERSION,
"NM256", &nm256_audio_driver,
sizeof(struct audio_driver),
DMA_NODMA, AFMT_U8 | AFMT_S16_LE,
NULL, -1, -1)) >= 0) {
/* 1K minimum buffer size. */
audio_devs[card->dev[x]]->min_fragment = 10;
/* Maximum of 8K buffer size. */
audio_devs[card->dev[x]]->max_fragment = 13;
}
else {
printk(KERN_ERR "NM256: Too many PCM devices available\n");
nm256_release_ports (card);
kfree (card);
return 0;
}
}
/* Insert the card in the list. */
card->next_card = nmcard_list;
nmcard_list = card;
printk(KERN_INFO "Initialized NeoMagic %s audio in PCI native mode\n",
verstr);
/*
* And our mixer. (We should allow support for other mixers, maybe.)
*/
nm256_install_mixer (card);
pmdev = pm_register(PM_PCI_DEV, PM_PCI_ID(pcidev), handle_pm_event);
if (pmdev)
pmdev->data = card;
return 1;
}
