Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 400 insertions, 0 deletions

diff --git a/arch/arm/mach-ixp2000/ixdp2x01.c b/arch/arm/mach-ixp2000/ixdp2x01.c
new file mode 100644
index 00000000000..e94dace3d41
--- /dev/null
+++ b/arch/arm/mach-ixp2000/ixdp2x01.c
@@ -0,0 +1,400 @@
+/*
+ * arch/arm/mach-ixp2000/ixdp2x01.c
+ *
+ * Code common to Intel IXDP2401 and IXDP2801 platforms
+ *
+ * Original Author: Andrzej Mialkowski <andrzej.mialkowski@intel.com>
+ * Maintainer: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright (C) 2002-2003 Intel Corp.
+ * Copyright (C) 2003-2004 MontaVista Software, Inc.
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/bitops.h>
+#include <linux/pci.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/serial.h>
+#include <linux/tty.h>
+#include <linux/serial_core.h>
+#include <linux/device.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <asm/system.h>
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+
+#include <asm/mach/pci.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/time.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/flash.h>
+
+/*************************************************************************
+ * IXDP2x01 IRQ Handling
+ *************************************************************************/
+static void ixdp2x01_irq_mask(unsigned int irq)
+{
+	ixp2000_reg_write(IXDP2X01_INT_MASK_SET_REG,
+				IXP2000_BOARD_IRQ_MASK(irq));
+}
+
+static void ixdp2x01_irq_unmask(unsigned int irq)
+{
+	ixp2000_reg_write(IXDP2X01_INT_MASK_CLR_REG,
+				IXP2000_BOARD_IRQ_MASK(irq));
+}
+
+static u32 valid_irq_mask;
+
+static void ixdp2x01_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+{
+	u32 ex_interrupt;
+	int i;
+
+	desc->chip->mask(irq);
+
+	ex_interrupt = *IXDP2X01_INT_STAT_REG & valid_irq_mask;
+
+	if (!ex_interrupt) {
+		printk(KERN_ERR "Spurious IXDP2X01 CPLD interrupt!\n");
+		return;
+	}
+
+	for (i = 0; i < IXP2000_BOARD_IRQS; i++) {
+		if (ex_interrupt & (1 << i)) {
+			struct irqdesc *cpld_desc;
+			int cpld_irq = IXP2000_BOARD_IRQ(0) + i;
+			cpld_desc = irq_desc + cpld_irq;
+			cpld_desc->handle(cpld_irq, cpld_desc, regs);
+		}
+	}
+
+	desc->chip->unmask(irq);
+}
+
+static struct irqchip ixdp2x01_irq_chip = {
+	.mask	= ixdp2x01_irq_mask,
+	.ack	= ixdp2x01_irq_mask,
+	.unmask	= ixdp2x01_irq_unmask
+};
+
+/*
+ * We only do anything if we are the master NPU on the board.
+ * The slave NPU only has the ethernet chip going directly to
+ * the PCIB interrupt input.
+ */
+void __init ixdp2x01_init_irq(void)
+{
+	int irq = 0;
+
+	/* initialize chip specific interrupts */
+	ixp2000_init_irq();
+
+	if (machine_is_ixdp2401())
+		valid_irq_mask = IXDP2401_VALID_IRQ_MASK;
+	else
+		valid_irq_mask = IXDP2801_VALID_IRQ_MASK;
+
+	/* Mask all interrupts from CPLD, disable simulation */
+	ixp2000_reg_write(IXDP2X01_INT_MASK_SET_REG, 0xffffffff);
+	ixp2000_reg_write(IXDP2X01_INT_SIM_REG, 0);
+
+	for (irq = NR_IXP2000_IRQS; irq < NR_IXDP2X01_IRQS; irq++) {
+		if (irq & valid_irq_mask) {
+			set_irq_chip(irq, &ixdp2x01_irq_chip);
+			set_irq_handler(irq, do_level_IRQ);
+			set_irq_flags(irq, IRQF_VALID);
+		} else {
+			set_irq_flags(irq, 0);
+		}
+	}
+
+	/* Hook into PCI interrupts */
+	set_irq_chained_handler(IRQ_IXP2000_PCIB, &ixdp2x01_irq_handler);
+}
+
+
+/*************************************************************************
+ * IXDP2x01 memory map and serial ports
+ *************************************************************************/
+static struct map_desc ixdp2x01_io_desc __initdata = {
+	.virtual	= IXDP2X01_VIRT_CPLD_BASE, 
+	.physical	= IXDP2X01_PHYS_CPLD_BASE,
+	.length		= IXDP2X01_CPLD_REGION_SIZE,
+	.type		= MT_DEVICE
+};
+
+static struct uart_port ixdp2x01_serial_ports[2] = {
+	{
+		.membase	= (char *)(IXDP2X01_UART1_VIRT_BASE),
+		.mapbase	= (unsigned long)IXDP2X01_UART1_PHYS_BASE,
+		.irq		= IRQ_IXDP2X01_UART1,
+		.flags		= UPF_SKIP_TEST,
+		.iotype		= UPIO_MEM32,
+		.regshift	= 2,
+		.uartclk	= IXDP2X01_UART_CLK,
+		.line		= 1,
+		.type		= PORT_16550A,
+		.fifosize	= 16
+	}, {
+		.membase	= (char *)(IXDP2X01_UART2_VIRT_BASE),
+		.mapbase	= (unsigned long)IXDP2X01_UART2_PHYS_BASE,
+		.irq		= IRQ_IXDP2X01_UART2,
+		.flags		= UPF_SKIP_TEST,
+		.iotype		= UPIO_MEM32,
+		.regshift	= 2,
+		.uartclk	= IXDP2X01_UART_CLK,
+		.line		= 2,
+		.type		= PORT_16550A,
+		.fifosize	= 16
+	}, 
+};
+
+static void __init ixdp2x01_map_io(void)
+{
+	ixp2000_map_io();	
+
+	iotable_init(&ixdp2x01_io_desc, 1);
+
+	early_serial_setup(&ixdp2x01_serial_ports[0]);
+	early_serial_setup(&ixdp2x01_serial_ports[1]);
+}
+
+
+/*************************************************************************
+ * IXDP2x01 timer tick configuration
+ *************************************************************************/
+static unsigned int ixdp2x01_clock;
+
+static int __init ixdp2x01_clock_setup(char *str)
+{
+	ixdp2x01_clock = simple_strtoul(str, NULL, 10);
+
+	return 1;
+}
+
+__setup("ixdp2x01_clock=", ixdp2x01_clock_setup);
+
+static void __init ixdp2x01_timer_init(void)
+{
+	if (!ixdp2x01_clock)
+		ixdp2x01_clock = 50000000;
+
+	ixp2000_init_time(ixdp2x01_clock);
+}
+
+static struct sys_timer ixdp2x01_timer = {
+	.init		= ixdp2x01_timer_init,
+	.offset		= ixp2000_gettimeoffset,
+};
+
+/*************************************************************************
+ * IXDP2x01 PCI
+ *************************************************************************/
+void __init ixdp2x01_pci_preinit(void)
+{
+	ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00000000);
+	ixp2000_pci_preinit();
+}
+
+#define DEVPIN(dev, pin) ((pin) | ((dev) << 3))
+
+static int __init ixdp2x01_pci_map_irq(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 == 0) {
+		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 MB bridge */
+	case 0x0008:
+		if (tmp_bus == dev->bus) {
+			/* Device is located directy after first MB bridge */
+			switch (devpin) {
+			case DEVPIN(1, 1):	/* Onboard 82546 ch 0 */
+				if (machine_is_ixdp2401())
+					return IRQ_IXDP2401_INTA_82546;
+				return -1;
+			case DEVPIN(1, 2):	/* Onboard 82546 ch 1 */
+				if (machine_is_ixdp2401())
+					return IRQ_IXDP2401_INTB_82546;
+				return -1;
+			case DEVPIN(0, 1):	/* PMC INTA# */
+				return IRQ_IXDP2X01_SPCI_PMC_INTA;
+			case DEVPIN(0, 2):	/* PMC INTB# */
+				return IRQ_IXDP2X01_SPCI_PMC_INTB;
+			case DEVPIN(0, 3):	/* PMC INTC# */
+				return IRQ_IXDP2X01_SPCI_PMC_INTC;
+			case DEVPIN(0, 4):	/* PMC INTD# */
+				return IRQ_IXDP2X01_SPCI_PMC_INTD;
+			}
+		}
+		break;
+	case 0x0010:
+		if (tmp_bus == dev->bus) {
+			/* Device is located directy after second MB bridge */
+			/* Secondary bus of second bridge */
+			switch (devpin) {
+			case DEVPIN(0, 1):	/* DB#0 */
+				return IRQ_IXDP2X01_SPCI_DB_0;
+			case DEVPIN(1, 1):	/* DB#1 */
+				return IRQ_IXDP2X01_SPCI_DB_1;
+			}
+		} else {
+			/* Device is located indirectly after second MB bridge */
+			/* Not supported now */
+		}
+		break;
+	}
+
+	return -1;
+}
+
+
+static int ixdp2x01_pci_setup(int nr, struct pci_sys_data *sys)
+{
+	sys->mem_offset = 0xe0000000;
+
+	if (machine_is_ixdp2801())
+		sys->mem_offset -= ((*IXP2000_PCI_ADDR_EXT & 0xE000) << 16);
+
+	return ixp2000_pci_setup(nr, sys);
+}
+
+struct hw_pci ixdp2x01_pci __initdata = {
+	.nr_controllers	= 1,
+	.setup		= ixdp2x01_pci_setup,
+	.preinit	= ixdp2x01_pci_preinit,
+	.scan		= ixp2000_pci_scan_bus,
+	.map_irq	= ixdp2x01_pci_map_irq,
+};
+
+int __init ixdp2x01_pci_init(void)
+{
+
+	pci_common_init(&ixdp2x01_pci);
+	return 0;
+}
+
+subsys_initcall(ixdp2x01_pci_init);
+
+/*************************************************************************
+ * IXDP2x01 Machine Intialization
+ *************************************************************************/
+static struct flash_platform_data ixdp2x01_flash_platform_data = {
+	.map_name	= "cfi_probe",
+	.width		= 1,
+};
+
+static unsigned long ixdp2x01_flash_bank_setup(unsigned long ofs)
+{
+	ixp2000_reg_write(IXDP2X01_CPLD_FLASH_REG,
+		((ofs >> IXDP2X01_FLASH_WINDOW_BITS) | IXDP2X01_CPLD_FLASH_INTERN));
+	return (ofs & IXDP2X01_FLASH_WINDOW_MASK);
+}
+
+static struct ixp2000_flash_data ixdp2x01_flash_data = {
+	.platform_data	= &ixdp2x01_flash_platform_data,
+	.bank_setup	= ixdp2x01_flash_bank_setup
+};
+
+static struct resource ixdp2x01_flash_resource = {
+	.start		= 0xc4000000,
+	.end		= 0xc4000000 + 0x01ffffff,
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device ixdp2x01_flash = {
+	.name		= "IXP2000-Flash",
+	.id		= 0,
+	.dev		= {
+		.platform_data = &ixdp2x01_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &ixdp2x01_flash_resource,
+};
+
+static struct ixp2000_i2c_pins ixdp2x01_i2c_gpio_pins = {
+	.sda_pin	= IXDP2X01_GPIO_SDA,
+	.scl_pin	= IXDP2X01_GPIO_SCL,
+};
+
+static struct platform_device ixdp2x01_i2c_controller = {
+	.name		= "IXP2000-I2C",
+	.id		= 0,
+	.dev		= {
+		.platform_data = &ixdp2x01_i2c_gpio_pins,
+	},
+	.num_resources	= 0
+};
+
+static struct platform_device *ixdp2x01_devices[] __initdata = {
+	&ixdp2x01_flash,
+	&ixdp2x01_i2c_controller
+};
+
+static void __init ixdp2x01_init_machine(void)
+{
+	ixp2000_reg_write(IXDP2X01_CPLD_FLASH_REG,
+		(IXDP2X01_CPLD_FLASH_BANK_MASK | IXDP2X01_CPLD_FLASH_INTERN));
+	
+	ixdp2x01_flash_data.nr_banks =
+		((*IXDP2X01_CPLD_FLASH_REG & IXDP2X01_CPLD_FLASH_BANK_MASK) + 1);
+
+	platform_add_devices(ixdp2x01_devices, ARRAY_SIZE(ixdp2x01_devices));
+}
+
+
+#ifdef CONFIG_ARCH_IXDP2401
+MACHINE_START(IXDP2401, "Intel IXDP2401 Development Platform")
+	MAINTAINER("MontaVista Software, Inc.")
+	BOOT_MEM(0x00000000, IXP2000_UART_PHYS_BASE, IXP2000_UART_VIRT_BASE)
+	BOOT_PARAMS(0x00000100)
+	MAPIO(ixdp2x01_map_io)
+	INITIRQ(ixdp2x01_init_irq)
+	.timer		= &ixdp2x01_timer,
+	INIT_MACHINE(ixdp2x01_init_machine)
+MACHINE_END
+#endif
+
+#ifdef CONFIG_ARCH_IXDP2801
+MACHINE_START(IXDP2801, "Intel IXDP2801 Development Platform")
+	MAINTAINER("MontaVista Software, Inc.")
+	BOOT_MEM(0x00000000, IXP2000_UART_PHYS_BASE, IXP2000_UART_VIRT_BASE)
+	BOOT_PARAMS(0x00000100)
+	MAPIO(ixdp2x01_map_io)
+	INITIRQ(ixdp2x01_init_irq)
+	.timer		= &ixdp2x01_timer,
+	INIT_MACHINE(ixdp2x01_init_machine)
+MACHINE_END
+#endif
+
+