diff options
Diffstat (limited to 'arch/arm/mach-ixp23xx/ixdp2351.c')
| -rw-r--r-- | arch/arm/mach-ixp23xx/ixdp2351.c | 347 |
1 files changed, 0 insertions, 347 deletions
diff --git a/arch/arm/mach-ixp23xx/ixdp2351.c b/arch/arm/mach-ixp23xx/ixdp2351.c deleted file mode 100644 index b0e07db5cea..00000000000 --- a/arch/arm/mach-ixp23xx/ixdp2351.c +++ /dev/null @@ -1,347 +0,0 @@ -/* - * arch/arm/mach-ixp23xx/ixdp2351.c - * - * IXDP2351 board-specific routines - * - * Author: Deepak Saxena <dsaxena@plexity.net> - * - * Copyright 2005 (c) MontaVista Software, Inc. - * - * Based on 2.4 code Copyright 2004 (c) Intel Corporation - * - * 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. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/spinlock.h> -#include <linux/sched.h> -#include <linux/interrupt.h> -#include <linux/irq.h> -#include <linux/serial.h> -#include <linux/tty.h> -#include <linux/bitops.h> -#include <linux/ioport.h> -#include <linux/serial_8250.h> -#include <linux/serial_core.h> -#include <linux/device.h> -#include <linux/mm.h> -#include <linux/pci.h> -#include <linux/mtd/physmap.h> - -#include <asm/types.h> -#include <asm/setup.h> -#include <asm/memory.h> -#include <mach/hardware.h> -#include <asm/mach-types.h> -#include <asm/tlbflush.h> -#include <asm/pgtable.h> - -#include <asm/mach/map.h> -#include <asm/mach/irq.h> -#include <asm/mach/arch.h> -#include <asm/mach/pci.h> - -/* - * IXDP2351 Interrupt Handling - */ -static void ixdp2351_inta_mask(struct irq_data *d) -{ - *IXDP2351_CPLD_INTA_MASK_SET_REG = IXDP2351_INTA_IRQ_MASK(d->irq); -} - -static void ixdp2351_inta_unmask(struct irq_data *d) -{ - *IXDP2351_CPLD_INTA_MASK_CLR_REG = IXDP2351_INTA_IRQ_MASK(d->irq); -} - -static void ixdp2351_inta_handler(unsigned int irq, struct irq_desc *desc) -{ - u16 ex_interrupt = - *IXDP2351_CPLD_INTA_STAT_REG & IXDP2351_INTA_IRQ_VALID; - int i; - - desc->irq_data.chip->irq_mask(&desc->irq_data); - - for (i = 0; i < IXDP2351_INTA_IRQ_NUM; i++) { - if (ex_interrupt & (1 << i)) { - int cpld_irq = - IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE + i); - generic_handle_irq(cpld_irq); - } - } - - desc->irq_data.chip->irq_unmask(&desc->irq_data); -} - -static struct irq_chip ixdp2351_inta_chip = { - .irq_ack = ixdp2351_inta_mask, - .irq_mask = ixdp2351_inta_mask, - .irq_unmask = ixdp2351_inta_unmask -}; - -static void ixdp2351_intb_mask(struct irq_data *d) -{ - *IXDP2351_CPLD_INTB_MASK_SET_REG = IXDP2351_INTB_IRQ_MASK(d->irq); -} - -static void ixdp2351_intb_unmask(struct irq_data *d) -{ - *IXDP2351_CPLD_INTB_MASK_CLR_REG = IXDP2351_INTB_IRQ_MASK(d->irq); -} - -static void ixdp2351_intb_handler(unsigned int irq, struct irq_desc *desc) -{ - u16 ex_interrupt = - *IXDP2351_CPLD_INTB_STAT_REG & IXDP2351_INTB_IRQ_VALID; - int i; - - desc->irq_data.chip->irq_ack(&desc->irq_data); - - for (i = 0; i < IXDP2351_INTB_IRQ_NUM; i++) { - if (ex_interrupt & (1 << i)) { - int cpld_irq = - IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE + i); - generic_handle_irq(cpld_irq); - } - } - - desc->irq_data.chip->irq_unmask(&desc->irq_data); -} - -static struct irq_chip ixdp2351_intb_chip = { - .irq_ack = ixdp2351_intb_mask, - .irq_mask = ixdp2351_intb_mask, - .irq_unmask = ixdp2351_intb_unmask -}; - -void __init ixdp2351_init_irq(void) -{ - int irq; - - /* Mask all interrupts from CPLD, disable simulation */ - *IXDP2351_CPLD_INTA_MASK_SET_REG = (u16) -1; - *IXDP2351_CPLD_INTB_MASK_SET_REG = (u16) -1; - *IXDP2351_CPLD_INTA_SIM_REG = 0; - *IXDP2351_CPLD_INTB_SIM_REG = 0; - - ixp23xx_init_irq(); - - for (irq = IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE); - irq < - IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE + IXDP2351_INTA_IRQ_NUM); - irq++) { - if (IXDP2351_INTA_IRQ_MASK(irq) & IXDP2351_INTA_IRQ_VALID) { - set_irq_flags(irq, IRQF_VALID); - irq_set_chip_and_handler(irq, &ixdp2351_inta_chip, - handle_level_irq); - } - } - - for (irq = IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE); - irq < - IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE + IXDP2351_INTB_IRQ_NUM); - irq++) { - if (IXDP2351_INTB_IRQ_MASK(irq) & IXDP2351_INTB_IRQ_VALID) { - set_irq_flags(irq, IRQF_VALID); - irq_set_chip_and_handler(irq, &ixdp2351_intb_chip, - handle_level_irq); - } - } - - irq_set_chained_handler(IRQ_IXP23XX_INTA, ixdp2351_inta_handler); - irq_set_chained_handler(IRQ_IXP23XX_INTB, ixdp2351_intb_handler); -} - -/* - * IXDP2351 PCI - */ - -/* - * This board does not do normal PCI IRQ routing, or any - * sort of swizzling, so we just need to check where on the - * bus the device is and figure out what CPLD pin it is - * being routed to. - */ -#define DEVPIN(dev, pin) ((pin) | ((dev) << 3)) - -static int __init ixdp2351_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) -{ - u8 bus = dev->bus->number; - u32 devpin = DEVPIN(PCI_SLOT(dev->devfn), pin); - struct pci_bus *tmp_bus = dev->bus; - - /* Primary bus, no interrupts here */ - if (!bus) - return -1; - - /* Lookup first leaf in bus tree */ - while ((tmp_bus->parent != NULL) && (tmp_bus->parent->parent != NULL)) - tmp_bus = tmp_bus->parent; - - /* Select between known bridges */ - switch (tmp_bus->self->devfn | (tmp_bus->self->bus->number << 8)) { - /* Device is located after first bridge */ - case 0x0008: - if (tmp_bus == dev->bus) { - /* Device is located directy after first bridge */ - switch (devpin) { - /* Onboard 82546 */ - case DEVPIN(1, 1): /* Onboard 82546 ch 0 */ - return IRQ_IXDP2351_INTA_82546; - case DEVPIN(1, 2): /* Onboard 82546 ch 1 */ - return IRQ_IXDP2351_INTB_82546; - /* PMC SLOT */ - case DEVPIN(0, 1): /* PMCP INTA# */ - case DEVPIN(2, 4): /* PMCS INTD# */ - return IRQ_IXDP2351_SPCI_PMC_INTA; - case DEVPIN(0, 2): /* PMCP INTB# */ - case DEVPIN(2, 1): /* PMCS INTA# */ - return IRQ_IXDP2351_SPCI_PMC_INTB; - case DEVPIN(0, 3): /* PMCP INTC# */ - case DEVPIN(2, 2): /* PMCS INTB# */ - return IRQ_IXDP2351_SPCI_PMC_INTC; - case DEVPIN(0, 4): /* PMCP INTD# */ - case DEVPIN(2, 3): /* PMCS INTC# */ - return IRQ_IXDP2351_SPCI_PMC_INTD; - } - } else { - /* Device is located indirectly after first bridge */ - /* Not supported now */ - return -1; - } - break; - case 0x0010: - if (tmp_bus == dev->bus) { - /* Device is located directy after second bridge */ - /* Secondary bus of second bridge */ - switch (devpin) { - case DEVPIN(0, 1): /* DB#0 */ - case DEVPIN(0, 2): - case DEVPIN(0, 3): - case DEVPIN(0, 4): - return IRQ_IXDP2351_SPCI_DB_0; - case DEVPIN(1, 1): /* DB#1 */ - case DEVPIN(1, 2): - case DEVPIN(1, 3): - case DEVPIN(1, 4): - return IRQ_IXDP2351_SPCI_DB_1; - case DEVPIN(2, 1): /* FIC1 */ - case DEVPIN(2, 2): - case DEVPIN(2, 3): - case DEVPIN(2, 4): - case DEVPIN(3, 1): /* FIC2 */ - case DEVPIN(3, 2): - case DEVPIN(3, 3): - case DEVPIN(3, 4): - return IRQ_IXDP2351_SPCI_FIC; - } - } else { - /* Device is located indirectly after second bridge */ - /* Not supported now */ - return -1; - } - break; - } - - return -1; -} - -struct hw_pci ixdp2351_pci __initdata = { - .nr_controllers = 1, - .preinit = ixp23xx_pci_preinit, - .setup = ixp23xx_pci_setup, - .scan = ixp23xx_pci_scan_bus, - .map_irq = ixdp2351_map_irq, -}; - -int __init ixdp2351_pci_init(void) -{ - if (machine_is_ixdp2351()) - pci_common_init(&ixdp2351_pci); - - return 0; -} - -subsys_initcall(ixdp2351_pci_init); - -/* - * IXDP2351 Static Mapped I/O - */ -static struct map_desc ixdp2351_io_desc[] __initdata = { - { - .virtual = IXDP2351_NP_VIRT_BASE, - .pfn = __phys_to_pfn((u64)IXDP2351_NP_PHYS_BASE), - .length = IXDP2351_NP_PHYS_SIZE, - .type = MT_DEVICE - }, { - .virtual = IXDP2351_BB_BASE_VIRT, - .pfn = __phys_to_pfn((u64)IXDP2351_BB_BASE_PHYS), - .length = IXDP2351_BB_SIZE, - .type = MT_DEVICE - } -}; - -static void __init ixdp2351_map_io(void) -{ - ixp23xx_map_io(); - iotable_init(ixdp2351_io_desc, ARRAY_SIZE(ixdp2351_io_desc)); -} - -static struct physmap_flash_data ixdp2351_flash_data = { - .width = 1, -}; - -static struct resource ixdp2351_flash_resource = { - .start = 0x90000000, - .end = 0x93ffffff, - .flags = IORESOURCE_MEM, -}; - -static struct platform_device ixdp2351_flash = { - .name = "physmap-flash", - .id = 0, - .dev = { - .platform_data = &ixdp2351_flash_data, - }, - .num_resources = 1, - .resource = &ixdp2351_flash_resource, -}; - -static void __init ixdp2351_init(void) -{ - platform_device_register(&ixdp2351_flash); - - /* - * Mark flash as writeable - */ - IXP23XX_EXP_CS0[0] |= IXP23XX_FLASH_WRITABLE; - IXP23XX_EXP_CS0[1] |= IXP23XX_FLASH_WRITABLE; - IXP23XX_EXP_CS0[2] |= IXP23XX_FLASH_WRITABLE; - IXP23XX_EXP_CS0[3] |= IXP23XX_FLASH_WRITABLE; - - ixp23xx_sys_init(); -} - -static void ixdp2351_restart(char mode, const char *cmd) -{ - /* First try machine specific support */ - - *IXDP2351_CPLD_RESET1_REG = IXDP2351_CPLD_RESET1_MAGIC; - (void) *IXDP2351_CPLD_RESET1_REG; - *IXDP2351_CPLD_RESET1_REG = IXDP2351_CPLD_RESET1_ENABLE; - - ixp23xx_restart(mode, cmd); -} - -MACHINE_START(IXDP2351, "Intel IXDP2351 Development Platform") - /* Maintainer: MontaVista Software, Inc. */ - .map_io = ixdp2351_map_io, - .init_irq = ixdp2351_init_irq, - .timer = &ixp23xx_timer, - .atag_offset = 0x100, - .init_machine = ixdp2351_init, - .restart = ixdp2351_restart, -MACHINE_END |