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// SPDX-License-Identifier: GPL-2.0
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <asm/ip32/ip32_ints.h>
/*
* O2 has up to 5 PCI devices connected into the MACE bridge. The device
* map looks like this:
*
* 0 aic7xxx 0
* 1 aic7xxx 1
* 2 expansion slot
* 3 N/C
* 4 N/C
*/
#define SCSI0 MACEPCI_SCSI0_IRQ
#define SCSI1 MACEPCI_SCSI1_IRQ
#define INTA0 MACEPCI_SLOT0_IRQ
#define INTA1 MACEPCI_SLOT1_IRQ
#define INTA2 MACEPCI_SLOT2_IRQ
#define INTB MACEPCI_SHARED0_IRQ
#define INTC MACEPCI_SHARED1_IRQ
#define INTD MACEPCI_SHARED2_IRQ
static char irq_tab_mace[][5] = {
/* Dummy INT#A INT#B INT#C INT#D */
{0, 0, 0, 0, 0}, /* This is placeholder row - never used */
{0, SCSI0, SCSI0, SCSI0, SCSI0},
{0, SCSI1, SCSI1, SCSI1, SCSI1},
{0, INTA0, INTB, INTC, INTD},
{0, INTA1, INTC, INTD, INTB},
{0, INTA2, INTD, INTB, INTC},
};
/*
* Given a PCI slot number (a la PCI_SLOT(...)) and the interrupt pin of
* the device (1-4 => A-D), tell what irq to use. Note that we don't
* in theory have slots 4 and 5, and we never normally use the shared
* irqs. I suppose a device without a pin A will thank us for doing it
* right if there exists such a broken piece of crap.
*/
int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
return irq_tab_mace[slot][pin];
}
/* Do platform specific device initialization at pci_enable_device() time */
int pcibios_plat_dev_init(struct pci_dev *dev)
{
return 0;
}
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