diff options
Diffstat (limited to 'arch/mips/ddb5xxx/ddb5074/nile4_pic.c')
| -rw-r--r-- | arch/mips/ddb5xxx/ddb5074/nile4_pic.c | 286 |
1 files changed, 0 insertions, 286 deletions
diff --git a/arch/mips/ddb5xxx/ddb5074/nile4_pic.c b/arch/mips/ddb5xxx/ddb5074/nile4_pic.c deleted file mode 100644 index 8743ffc..0000000 --- a/arch/mips/ddb5xxx/ddb5074/nile4_pic.c +++ /dev/null @@ -1,286 +0,0 @@ -/* - * arch/mips/ddb5476/nile4.c -- - * low-level PIC code for NEC Vrc-5476 (Nile 4) - * - * Copyright (C) 2000 Geert Uytterhoeven <geert@sonycom.com> - * Sony Software Development Center Europe (SDCE), Brussels - * - * Copyright 2001 MontaVista Software Inc. - * Author: jsun@mvista.com or jsun@junsun.net - * - */ -#include <linux/config.h> -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/interrupt.h> -#include <linux/ioport.h> - -#include <asm/addrspace.h> - -#include <asm/ddb5xxx/ddb5xxx.h> - -static int irq_base; - -/* - * Interrupt Programming - */ -void nile4_map_irq(int nile4_irq, int cpu_irq) -{ - u32 offset, t; - - offset = DDB_INTCTRL; - if (nile4_irq >= 8) { - offset += 4; - nile4_irq -= 8; - } - t = ddb_in32(offset); - t &= ~(7 << (nile4_irq * 4)); - t |= cpu_irq << (nile4_irq * 4); - ddb_out32(offset, t); -} - -void nile4_map_irq_all(int cpu_irq) -{ - u32 all, t; - - all = cpu_irq; - all |= all << 4; - all |= all << 8; - all |= all << 16; - t = ddb_in32(DDB_INTCTRL); - t &= 0x88888888; - t |= all; - ddb_out32(DDB_INTCTRL, t); - t = ddb_in32(DDB_INTCTRL + 4); - t &= 0x88888888; - t |= all; - ddb_out32(DDB_INTCTRL + 4, t); -} - -void nile4_enable_irq(unsigned int nile4_irq) -{ - u32 offset, t; - - nile4_irq-=irq_base; - - ddb5074_led_hex(8); - - offset = DDB_INTCTRL; - if (nile4_irq >= 8) { - offset += 4; - nile4_irq -= 8; - } - ddb5074_led_hex(9); - t = ddb_in32(offset); - ddb5074_led_hex(0xa); - t |= 8 << (nile4_irq * 4); - ddb_out32(offset, t); - ddb5074_led_hex(0xb); -} - -void nile4_disable_irq(unsigned int nile4_irq) -{ - u32 offset, t; - - nile4_irq-=irq_base; - - offset = DDB_INTCTRL; - if (nile4_irq >= 8) { - offset += 4; - nile4_irq -= 8; - } - t = ddb_in32(offset); - t &= ~(8 << (nile4_irq * 4)); - ddb_out32(offset, t); -} - -void nile4_disable_irq_all(void) -{ - ddb_out32(DDB_INTCTRL, 0); - ddb_out32(DDB_INTCTRL + 4, 0); -} - -u16 nile4_get_irq_stat(int cpu_irq) -{ - return ddb_in16(DDB_INTSTAT0 + cpu_irq * 2); -} - -void nile4_enable_irq_output(int cpu_irq) -{ - u32 t; - - t = ddb_in32(DDB_INTSTAT1 + 4); - t |= 1 << (16 + cpu_irq); - ddb_out32(DDB_INTSTAT1, t); -} - -void nile4_disable_irq_output(int cpu_irq) -{ - u32 t; - - t = ddb_in32(DDB_INTSTAT1 + 4); - t &= ~(1 << (16 + cpu_irq)); - ddb_out32(DDB_INTSTAT1, t); -} - -void nile4_set_pci_irq_polarity(int pci_irq, int high) -{ - u32 t; - - t = ddb_in32(DDB_INTPPES); - if (high) - t &= ~(1 << (pci_irq * 2)); - else - t |= 1 << (pci_irq * 2); - ddb_out32(DDB_INTPPES, t); -} - -void nile4_set_pci_irq_level_or_edge(int pci_irq, int level) -{ - u32 t; - - t = ddb_in32(DDB_INTPPES); - if (level) - t |= 2 << (pci_irq * 2); - else - t &= ~(2 << (pci_irq * 2)); - ddb_out32(DDB_INTPPES, t); -} - -void nile4_clear_irq(int nile4_irq) -{ - nile4_irq-=irq_base; - ddb_out32(DDB_INTCLR, 1 << nile4_irq); -} - -void nile4_clear_irq_mask(u32 mask) -{ - ddb_out32(DDB_INTCLR, mask); -} - -u8 nile4_i8259_iack(void) -{ - u8 irq; - u32 reg; - - /* Set window 0 for interrupt acknowledge */ - reg = ddb_in32(DDB_PCIINIT0); - - ddb_set_pmr(DDB_PCIINIT0, DDB_PCICMD_IACK, 0, DDB_PCI_ACCESS_32); - irq = *(volatile u8 *) KSEG1ADDR(DDB_PCI_IACK_BASE); - /* restore window 0 for PCI I/O space */ - // ddb_set_pmr(DDB_PCIINIT0, DDB_PCICMD_IO, 0, DDB_PCI_ACCESS_32); - ddb_out32(DDB_PCIINIT0, reg); - - /* i8269.c set the base vector to be 0x0 */ - return irq ; -} - -static unsigned int nile4_irq_startup(unsigned int irq) { - - nile4_enable_irq(irq); - return 0; - -} - -static void nile4_ack_irq(unsigned int irq) { - - ddb5074_led_hex(4); - - nile4_clear_irq(irq); - ddb5074_led_hex(2); - nile4_disable_irq(irq); - - ddb5074_led_hex(0); -} - -static void nile4_irq_end(unsigned int irq) { - - ddb5074_led_hex(3); - if(!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) { - ddb5074_led_hex(5); - nile4_enable_irq(irq); - ddb5074_led_hex(7); - } - - ddb5074_led_hex(1); -} - -#define nile4_irq_shutdown nile4_disable_irq - -static hw_irq_controller nile4_irq_controller = { - .typename = "nile4", - .startup = nile4_irq_startup, - .shutdown = nile4_irq_shutdown, - .enable = nile4_enable_irq, - .disable = nile4_disable_irq, - .ack = nile4_ack_irq, - .end = nile4_irq_end, -}; - -void nile4_irq_setup(u32 base) { - - int i; - - irq_base=base; - - /* Map all interrupts to CPU int #0 */ - nile4_map_irq_all(0); - - /* PCI INTA#-E# must be level triggered */ - nile4_set_pci_irq_level_or_edge(0, 1); - nile4_set_pci_irq_level_or_edge(1, 1); - nile4_set_pci_irq_level_or_edge(2, 1); - nile4_set_pci_irq_level_or_edge(3, 1); - nile4_set_pci_irq_level_or_edge(4, 1); - - /* PCI INTA#-D# must be active low, INTE# must be active high */ - nile4_set_pci_irq_polarity(0, 0); - nile4_set_pci_irq_polarity(1, 0); - nile4_set_pci_irq_polarity(2, 0); - nile4_set_pci_irq_polarity(3, 0); - nile4_set_pci_irq_polarity(4, 1); - - - for (i = 0; i < 16; i++) { - nile4_clear_irq(i); - nile4_disable_irq(i); - } - - /* Enable CPU int #0 */ - nile4_enable_irq_output(0); - - for (i= base; i< base + NUM_NILE4_INTERRUPTS; i++) { - irq_desc[i].status = IRQ_DISABLED; - irq_desc[i].action = NULL; - irq_desc[i].depth = 1; - irq_desc[i].handler = &nile4_irq_controller; - } -} - -#if defined(CONFIG_RUNTIME_DEBUG) -void nile4_dump_irq_status(void) -{ - printk(KERN_DEBUG " - CPUSTAT = %p:%p\n", (void *) ddb_in32(DDB_CPUSTAT + 4), - (void *) ddb_in32(DDB_CPUSTAT)); - printk(KERN_DEBUG " - INTCTRL = %p:%p\n", (void *) ddb_in32(DDB_INTCTRL + 4), - (void *) ddb_in32(DDB_INTCTRL)); - printk(KERN_DEBUG - "INTSTAT0 = %p:%p\n", - (void *) ddb_in32(DDB_INTSTAT0 + 4), - (void *) ddb_in32(DDB_INTSTAT0)); - printk(KERN_DEBUG - "INTSTAT1 = %p:%p\n", - (void *) ddb_in32(DDB_INTSTAT1 + 4), - (void *) ddb_in32(DDB_INTSTAT1)); - printk(KERN_DEBUG - "INTCLR = %p:%p\n", (void *) ddb_in32(DDB_INTCLR + 4), - (void *) ddb_in32(DDB_INTCLR)); - printk(KERN_DEBUG - "INTPPES = %p:%p\n", (void *) ddb_in32(DDB_INTPPES + 4), - (void *) ddb_in32(DDB_INTPPES)); -} - -#endif |