/* * arch/mips/pci/fixup-vr4133.c * * The NEC CMB-VR4133 Board specific PCI fixups. * * Author: Yoichi Yuasa and * Alex Sapkov * * 2003-2004 (c) MontaVista, Software, Inc. This file is licensed under * the terms of the GNU General Public License version 2. This program * is licensed "as is" without any warranty of any kind, whether express * or implied. * * Modified for support in 2.6 * Author: Manish Lachwani (mlachwani@mvista.com) * */ #include #include #include #include #include #include extern int vr4133_rockhopper; extern void ali_m1535plus_init(struct pci_dev *dev); extern void ali_m5229_init(struct pci_dev *dev); /* Do platform specific device initialization at pci_enable_device() time */ int pcibios_plat_dev_init(struct pci_dev *dev) { /* * We have to reset AMD PCnet adapter on Rockhopper since * PMON leaves it enabled and generating interrupts. This leads * to a lock if some PCI device driver later enables the IRQ line * shared with PCnet and there is no AMD PCnet driver to catch its * interrupts. */ #ifdef CONFIG_ROCKHOPPER if (dev->vendor == PCI_VENDOR_ID_AMD && dev->device == PCI_DEVICE_ID_AMD_LANCE) { inl(pci_resource_start(dev, 0) + 0x18); } #endif /* * we have to open the bridges' windows down to 0 because otherwise * we cannot access ISA south bridge I/O registers that get mapped from * 0. for example, 8259 PIC would be unaccessible without that */ if(dev->vendor == PCI_VENDOR_ID_INTEL && dev->device == PCI_DEVICE_ID_INTEL_S21152BB) { pci_write_config_byte(dev, PCI_IO_BASE, 0); if(dev->bus->number == 0) { pci_write_config_word(dev, PCI_IO_BASE_UPPER16, 0); } else { pci_write_config_word(dev, PCI_IO_BASE_UPPER16, 1); } } return 0; } /* * M1535 IRQ mapping * Feel free to change this, although it shouldn't be needed */ #define M1535_IRQ_INTA 7 #define M1535_IRQ_INTB 9 #define M1535_IRQ_INTC 10 #define M1535_IRQ_INTD 11 #define M1535_IRQ_USB 9 #define M1535_IRQ_IDE 14 #define M1535_IRQ_IDE2 15 #define M1535_IRQ_PS2 12 #define M1535_IRQ_RTC 8 #define M1535_IRQ_FDC 6 #define M1535_IRQ_AUDIO 5 #define M1535_IRQ_COM1 4 #define M1535_IRQ_COM2 4 #define M1535_IRQ_IRDA 3 #define M1535_IRQ_KBD 1 #define M1535_IRQ_TMR 0 /* Rockhopper "slots" assignment; this is hard-coded ... */ #define ROCKHOPPER_M5451_SLOT 1 #define ROCKHOPPER_M1535_SLOT 2 #define ROCKHOPPER_M5229_SLOT 11 #define ROCKHOPPER_M5237_SLOT 15 #define ROCKHOPPER_PMU_SLOT 12 /* ... and hard-wired. */ #define ROCKHOPPER_PCI1_SLOT 3 #define ROCKHOPPER_PCI2_SLOT 4 #define ROCKHOPPER_PCI3_SLOT 5 #define ROCKHOPPER_PCI4_SLOT 6 #define ROCKHOPPER_PCNET_SLOT 1 #define M1535_IRQ_MASK(n) (1 << (n)) #define M1535_IRQ_EDGE (M1535_IRQ_MASK(M1535_IRQ_TMR) | \ M1535_IRQ_MASK(M1535_IRQ_KBD) | \ M1535_IRQ_MASK(M1535_IRQ_COM1) | \ M1535_IRQ_MASK(M1535_IRQ_COM2) | \ M1535_IRQ_MASK(M1535_IRQ_IRDA) | \ M1535_IRQ_MASK(M1535_IRQ_RTC) | \ M1535_IRQ_MASK(M1535_IRQ_FDC) | \ M1535_IRQ_MASK(M1535_IRQ_PS2)) #define M1535_IRQ_LEVEL (M1535_IRQ_MASK(M1535_IRQ_IDE) | \ M1535_IRQ_MASK(M1535_IRQ_USB) | \ M1535_IRQ_MASK(M1535_IRQ_INTA) | \ M1535_IRQ_MASK(M1535_IRQ_INTB) | \ M1535_IRQ_MASK(M1535_IRQ_INTC) | \ M1535_IRQ_MASK(M1535_IRQ_INTD)) struct irq_map_entry { u16 bus; u8 slot; u8 irq; }; static struct irq_map_entry int_map[] = { {1, ROCKHOPPER_M5451_SLOT, M1535_IRQ_AUDIO}, /* Audio controller */ {1, ROCKHOPPER_PCI1_SLOT, M1535_IRQ_INTD}, /* PCI slot #1 */ {1, ROCKHOPPER_PCI2_SLOT, M1535_IRQ_INTC}, /* PCI slot #2 */ {1, ROCKHOPPER_M5237_SLOT, M1535_IRQ_USB}, /* USB host controller */ {1, ROCKHOPPER_M5229_SLOT, IDE_PRIMARY_IRQ}, /* IDE controller */ {2, ROCKHOPPER_PCNET_SLOT, M1535_IRQ_INTD}, /* AMD Am79c973 on-board ethernet */ {2, ROCKHOPPER_PCI3_SLOT, M1535_IRQ_INTB}, /* PCI slot #3 */ {2, ROCKHOPPER_PCI4_SLOT, M1535_IRQ_INTC} /* PCI slot #4 */ }; static int pci_intlines[] = { M1535_IRQ_INTA, M1535_IRQ_INTB, M1535_IRQ_INTC, M1535_IRQ_INTD }; /* Determine the Rockhopper IRQ line number for the PCI device */ int rockhopper_get_irq(struct pci_dev *dev, u8 pin, u8 slot) { struct pci_bus *bus; int i; bus = dev->bus; if (bus == NULL) return -1; for (i = 0; i < ARRAY_SIZE(int_map); i++) { if (int_map[i].bus == bus->number && int_map[i].slot == slot) { int line; for (line = 0; line < 4; line++) if (pci_intlines[line] == int_map[i].irq) break; if (line < 4) return pci_intlines[(line + (pin - 1)) % 4]; else return int_map[i].irq; } } return -1; } #ifdef CONFIG_ROCKHOPPER void i8259_init(void) { init_i8259_irqs(); outb(0x00, 0x4d0); outb(0x02, 0x4d1); /* USB IRQ9 is level */ } #endif int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { extern int pci_probe_only; pci_probe_only = 1; #ifdef CONFIG_ROCKHOPPER if( dev->bus->number == 1 && vr4133_rockhopper ) { if(slot == ROCKHOPPER_PCI1_SLOT || slot == ROCKHOPPER_PCI2_SLOT) dev->irq = CMBVR41XX_INTA_IRQ; else dev->irq = rockhopper_get_irq(dev, pin, slot); } else dev->irq = CMBVR41XX_INTA_IRQ; #else dev->irq = CMBVR41XX_INTA_IRQ; #endif return dev->irq; } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, ali_m1535plus_init); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5229, ali_m5229_init);