diff options
Diffstat (limited to 'arch/arm/kernel/hw-ebsa285.c')
| -rw-r--r-- | arch/arm/kernel/hw-ebsa285.c | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/arch/arm/kernel/hw-ebsa285.c b/arch/arm/kernel/hw-ebsa285.c deleted file mode 100644 index e3385696b..000000000 --- a/arch/arm/kernel/hw-ebsa285.c +++ /dev/null @@ -1,161 +0,0 @@ -/* - * arch/arm/kernel/hw-ebsa286.c - * - * EBSA285 hardware specific functions - * - * Copyright (C) 1998 Russell King, Phil Blundel - */ -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/delay.h> -#include <linux/pci.h> -#include <linux/ptrace.h> -#include <linux/interrupt.h> -#include <linux/init.h> - -#include <asm/irq.h> -#include <asm/system.h> - -extern int setup_arm_irq(int, struct irqaction *); - -extern void pci_set_cmd(struct pci_dev *dev, unsigned short clear, unsigned short set); -extern void pci_set_base_addr(struct pci_dev *dev, int idx, unsigned int addr); -extern void pci_set_irq_line(struct pci_dev *dev, unsigned int irq); - -static int irqmap_ebsa[] __initdata = { 9, 8, 18, 11 }; -static int irqmap_cats[] __initdata = { 18, 8, 9, 11 }; - -__initfunc(static int ebsa_irqval(struct pci_dev *dev)) -{ - unsigned char pin; - - pcibios_read_config_byte(dev->bus->number, - dev->devfn, - PCI_INTERRUPT_PIN, - &pin); - - return irqmap_ebsa[(PCI_SLOT(dev->devfn) + pin) & 3]; -} - -__initfunc(static int cats_irqval(struct pci_dev *dev)) -{ - if (dev->irq >= 128) - return 32 + (dev->irq & 0x1f); - - switch (dev->irq) { - case 1: - case 2: - case 3: - case 4: - return irqmap_cats[dev->irq - 1]; - case 0: - return 0; - } - - printk("PCI: device %02x:%02x has unknown irq line %x\n", - dev->bus->number, dev->devfn, dev->irq); - return 0; -} - -__initfunc(void pcibios_fixup_ebsa285(struct pci_dev *dev)) -{ - char cmd; - - /* sort out the irq mapping for this device */ - switch (machine_type) { - case MACH_TYPE_EBSA285: - dev->irq = ebsa_irqval(dev); - break; - case MACH_TYPE_CATS: - dev->irq = cats_irqval(dev); - break; - } - - /* Turn on bus mastering - boot loader doesn't - * - perhaps it should! - dag - */ - pci_read_config_byte(dev, PCI_COMMAND, &cmd); - pci_write_config_byte(dev, PCI_COMMAND, cmd | PCI_COMMAND_MASTER); -} - -static void irq_pci_err(int irq, void *dev_id, struct pt_regs *regs) -{ - const char *err = "unknown"; - unsigned long cmd = *(unsigned long *)0xfe000004 & 0xffff; - unsigned long ctrl = *(unsigned long *)0xfe00013c & 0xffffde07; - static unsigned long next_warn[7]; - int idx = 6; - - switch(irq) { - case IRQ_PCIPARITY: - *(unsigned long *)0xfe000004 = cmd | 1 << 31; - idx = 0; - err = "parity"; - break; - - case IRQ_PCITARGETABORT: - *(unsigned long *)0xfe000004 = cmd | 1 << 28; - idx = 1; - err = "target abort"; - break; - - case IRQ_PCIMASTERABORT: - *(unsigned long *)0xfe000004 = cmd | 1 << 29; - idx = 2; - err = "master abort"; - break; - - case IRQ_PCIDATAPARITY: - *(unsigned long *)0xfe000004 = cmd | 1 << 24; - idx = 3; - err = "data parity"; - break; - - case IRQ_DISCARDTIMER: - *(unsigned long *)0xfe00013c = ctrl | 1 << 8; - idx = 4; - err = "discard timer"; - break; - - case IRQ_SERR: - *(unsigned long *)0xfe00013c = ctrl | 1 << 3; - idx = 5; - err = "system"; - break; - } - if (time_after_eq(jiffies, next_warn[idx])) { - next_warn[idx] = jiffies + 3 * HZ / 100; - printk(KERN_ERR "PCI %s error detected\n", err); - } -} - -static struct irqaction irq_pci_error = { - irq_pci_err, SA_INTERRUPT, 0, "PCI error", NULL, NULL -}; - -__initfunc(void pcibios_init_ebsa285(void)) -{ - setup_arm_irq(IRQ_PCIPARITY, &irq_pci_error); - setup_arm_irq(IRQ_PCITARGETABORT, &irq_pci_error); - setup_arm_irq(IRQ_PCIMASTERABORT, &irq_pci_error); - setup_arm_irq(IRQ_PCIDATAPARITY, &irq_pci_error); - setup_arm_irq(IRQ_DISCARDTIMER, &irq_pci_error); - setup_arm_irq(IRQ_SERR, &irq_pci_error); - - /* - * Map our SDRAM at a known address in PCI space, just in case - * the firmware had other ideas. Using a nonzero base is slightly - * bizarre but apparently necessary to avoid problems with some - * video cards. - * - * We should really only do this if the central function is enabled. - */ - *(unsigned long *)0xfe000010 = 0; - *(unsigned long *)0xfe000018 = 0xe0000000; - *(unsigned long *)0xfe0000f8 = 0; - *(unsigned long *)0xfe0000fc = 0; - *(unsigned long *)0xfe000100 = 0x01fc0000; - *(unsigned long *)0xfe000104 = 0; - *(unsigned long *)0xfe000108 = 0x80000000; - *(unsigned long *)0xfe000004 = 0x17; -} |