static int esp_dafb_dma_irq_p(struct NCR_ESP * esp)
{
unsigned int ret;
int sreg = esp_read(esp->eregs->esp_status);
#ifdef DEBUG_MAC_ESP
printk("mac_esp: esp_dafb_dma_irq_p dafb %d irq %d\n",
readl(esp->dregs), mac_irq_pending(IRQ_MAC_SCSI));
#endif
sreg &= ESP_STAT_INTR;
/*
* maybe working; this is essentially what's used for iosb_dma_irq_p
*/
if (sreg)
return 1;
else
return 0;
/*
* didn't work ...
*/
#if 0
if (esp->current_SC)
ret = readl(esp->dregs) & 0x200;
else if (esp->disconnected_SC)
ret = 1; /* sreg ?? */
else
ret = mac_irq_pending(IRQ_MAC_SCSI);
return(ret);
#endif
}
static inline int mac_esp_wait_for_dreq(struct esp *esp)
{
struct mac_esp_priv *mep = MAC_ESP_GET_PRIV(esp);
int i = 500000;
do {
if (mep->pdma_regs == NULL) {
if (mac_irq_pending(IRQ_MAC_SCSIDRQ))
return 0;
} else {
if (nubus_readl(mep->pdma_regs) & 0x200)
return 0;
}
if (esp_read8(ESP_STATUS) & ESP_STAT_INTR)
return 1;
udelay(2);
} while (--i);
printk(KERN_ERR PFX "PDMA timeout (sreg %02x)\n",
esp_read8(ESP_STATUS));
mep->error = 1;
return 1;
}
static int esp_iosb_dma_irq_p(struct NCR_ESP * esp)
{
int ret = mac_irq_pending(IRQ_MAC_SCSI) || mac_irq_pending(IRQ_MAC_SCSIDRQ);
int sreg = esp_read(esp->eregs->esp_status);
#ifdef DEBUG_MAC_ESP
printk("mac_esp: dma_irq_p drq %d irq %d sreg %x curr %p disc %p\n",
mac_irq_pending(IRQ_MAC_SCSIDRQ), mac_irq_pending(IRQ_MAC_SCSI),
sreg, esp->current_SC, esp->disconnected_SC);
#endif
sreg &= ESP_STAT_INTR;
if (sreg)
return (sreg);
else
return 0;
}