1*b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0
21da177e4SLinus Torvalds #include <linux/init.h>
31da177e4SLinus Torvalds #include <linux/kernel.h>
41da177e4SLinus Torvalds #include <linux/pci.h>
51da177e4SLinus Torvalds #include <asm/ip32/ip32_ints.h>
61da177e4SLinus Torvalds /*
71da177e4SLinus Torvalds * O2 has up to 5 PCI devices connected into the MACE bridge. The device
81da177e4SLinus Torvalds * map looks like this:
91da177e4SLinus Torvalds *
101da177e4SLinus Torvalds * 0 aic7xxx 0
111da177e4SLinus Torvalds * 1 aic7xxx 1
121da177e4SLinus Torvalds * 2 expansion slot
131da177e4SLinus Torvalds * 3 N/C
141da177e4SLinus Torvalds * 4 N/C
151da177e4SLinus Torvalds */
161da177e4SLinus Torvalds
171da177e4SLinus Torvalds #define SCSI0 MACEPCI_SCSI0_IRQ
181da177e4SLinus Torvalds #define SCSI1 MACEPCI_SCSI1_IRQ
191da177e4SLinus Torvalds #define INTA0 MACEPCI_SLOT0_IRQ
201da177e4SLinus Torvalds #define INTA1 MACEPCI_SLOT1_IRQ
211da177e4SLinus Torvalds #define INTA2 MACEPCI_SLOT2_IRQ
221da177e4SLinus Torvalds #define INTB MACEPCI_SHARED0_IRQ
231da177e4SLinus Torvalds #define INTC MACEPCI_SHARED1_IRQ
241da177e4SLinus Torvalds #define INTD MACEPCI_SHARED2_IRQ
2519a8d6b7SLorenzo Pieralisi static char irq_tab_mace[][5] = {
261da177e4SLinus Torvalds /* Dummy INT#A INT#B INT#C INT#D */
271da177e4SLinus Torvalds {0, 0, 0, 0, 0}, /* This is placeholder row - never used */
281da177e4SLinus Torvalds {0, SCSI0, SCSI0, SCSI0, SCSI0},
291da177e4SLinus Torvalds {0, SCSI1, SCSI1, SCSI1, SCSI1},
301da177e4SLinus Torvalds {0, INTA0, INTB, INTC, INTD},
311da177e4SLinus Torvalds {0, INTA1, INTC, INTD, INTB},
321da177e4SLinus Torvalds {0, INTA2, INTD, INTB, INTC},
331da177e4SLinus Torvalds };
341da177e4SLinus Torvalds
351da177e4SLinus Torvalds
361da177e4SLinus Torvalds /*
371da177e4SLinus Torvalds * Given a PCI slot number (a la PCI_SLOT(...)) and the interrupt pin of
381da177e4SLinus Torvalds * the device (1-4 => A-D), tell what irq to use. Note that we don't
391da177e4SLinus Torvalds * in theory have slots 4 and 5, and we never normally use the shared
401da177e4SLinus Torvalds * irqs. I suppose a device without a pin A will thank us for doing it
411da177e4SLinus Torvalds * right if there exists such a broken piece of crap.
421da177e4SLinus Torvalds */
pcibios_map_irq(const struct pci_dev * dev,u8 slot,u8 pin)4319a8d6b7SLorenzo Pieralisi int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
441da177e4SLinus Torvalds {
451da177e4SLinus Torvalds return irq_tab_mace[slot][pin];
461da177e4SLinus Torvalds }
471da177e4SLinus Torvalds
481da177e4SLinus Torvalds /* Do platform specific device initialization at pci_enable_device() time */
pcibios_plat_dev_init(struct pci_dev * dev)491da177e4SLinus Torvalds int pcibios_plat_dev_init(struct pci_dev *dev)
501da177e4SLinus Torvalds {
511da177e4SLinus Torvalds return 0;
521da177e4SLinus Torvalds }
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