include/asm-arm/arch-ixp2000/ixp2000-regs.h - maze/linux - Git at Google

 /*
  * include/asm-arm/arch-ixp2000/ixp2000-regs.h
  *
  * Chipset register definitions for IXP2400/2800 based systems.
  *
  * Original Author: Naeem Afzal <naeem.m.afzal@intel.com>
  *
  * Maintainer: Deepak Saxena <dsaxena@plexity.net>
  *
  * Copyright (C) 2002 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.
  */
 #ifndef _IXP2000_REGS_H_
 #define _IXP2000_REGS_H_

 /*
  * Static I/O regions.
  *
  * Most of the registers are clumped in 4K regions spread throughout
  * the 0xc0000000 -> 0xc0100000 address range, but we just map in
  * the whole range using a single 1 MB section instead of small
  * 4K pages.  This has two advantages for us:
  *
  * 1) We use only one TLB entry for large number of on-chip I/O devices.
  *
  * 2) We can easily set the Section attributes to XCB=101 on the IXP2400
  *    as required per erratum #66.  We accomplish this by using a
  *    new MT_IXP2000_DEVICE memory type with the bits set as required.
  *
  * CAP stands for CSR Access Proxy.
  *
  * If you change the virtual address of this mapping, please propagate
  * the change to arch/arm/kernel/debug.S, which hardcodes the virtual
  * address of the UART located in this region.
  */

 #define	IXP2000_CAP_PHYS_BASE		0xc0000000
 #define	IXP2000_CAP_VIRT_BASE		0xfef00000
 #define	IXP2000_CAP_SIZE		0x00100000

 /*
  * Addresses for specific on-chip peripherals
  */
 #define	IXP2000_SLOWPORT_CSR_VIRT_BASE	0xfef80000
 #define	IXP2000_GLOBAL_REG_VIRT_BASE	0xfef04000
 #define	IXP2000_UART_PHYS_BASE		0xc0030000
 #define	IXP2000_UART_VIRT_BASE		0xfef30000
 #define	IXP2000_TIMER_VIRT_BASE		0xfef20000
 #define	IXP2000_GPIO_VIRT_BASE		0Xfef10000

 /*
  * Devices outside of the 0xc0000000 -> 0xc0100000 range.  The virtual
  * addresses of the INTCTL and PCI_CSR mappings are hardcoded in
  * entry-macro.S, so if you ever change these please propagate
  * the change.
  */
 #define IXP2000_INTCTL_PHYS_BASE	0xd6000000
 #define	IXP2000_INTCTL_VIRT_BASE	0xfee00000
 #define	IXP2000_INTCTL_SIZE		0x00100000

 #define IXP2000_PCI_CREG_PHYS_BASE	0xde000000
 #define	IXP2000_PCI_CREG_VIRT_BASE	0xfed00000
 #define	IXP2000_PCI_CREG_SIZE		0x00100000

 #define IXP2000_PCI_CSR_PHYS_BASE	0xdf000000
 #define	IXP2000_PCI_CSR_VIRT_BASE	0xfec00000
 #define	IXP2000_PCI_CSR_SIZE		0x00100000

 #define IXP2000_PCI_IO_PHYS_BASE	0xd8000000
 #define	IXP2000_PCI_IO_VIRT_BASE	0xfd000000
 #define IXP2000_PCI_IO_SIZE     	0x01000000

 #define IXP2000_PCI_CFG0_PHYS_BASE	0xda000000
 #define IXP2000_PCI_CFG0_VIRT_BASE	0xfc000000
 #define IXP2000_PCI_CFG0_SIZE   	0x01000000

 #define IXP2000_PCI_CFG1_PHYS_BASE	0xdb000000
 #define IXP2000_PCI_CFG1_VIRT_BASE	0xfb000000
 #define IXP2000_PCI_CFG1_SIZE		0x01000000

 /*
  * Timers
  */
 #define	IXP2000_TIMER_REG(x)		((volatile unsigned long*)(IXP2000_TIMER_VIRT_BASE | (x)))
 /* Timer control */
 #define	IXP2000_T1_CTL			IXP2000_TIMER_REG(0x00)
 #define	IXP2000_T2_CTL			IXP2000_TIMER_REG(0x04)
 #define	IXP2000_T3_CTL			IXP2000_TIMER_REG(0x08)
 #define	IXP2000_T4_CTL			IXP2000_TIMER_REG(0x0c)
 /* Store initial value */
 #define	IXP2000_T1_CLD			IXP2000_TIMER_REG(0x10)
 #define	IXP2000_T2_CLD			IXP2000_TIMER_REG(0x14)
 #define	IXP2000_T3_CLD			IXP2000_TIMER_REG(0x18)
 #define	IXP2000_T4_CLD			IXP2000_TIMER_REG(0x1c)
 /* Read current value */
 #define	IXP2000_T1_CSR			IXP2000_TIMER_REG(0x20)
 #define	IXP2000_T2_CSR			IXP2000_TIMER_REG(0x24)
 #define	IXP2000_T3_CSR			IXP2000_TIMER_REG(0x28)
 #define	IXP2000_T4_CSR			IXP2000_TIMER_REG(0x2c)
 /* Clear associated timer interrupt */
 #define	IXP2000_T1_CLR			IXP2000_TIMER_REG(0x30)
 #define	IXP2000_T2_CLR			IXP2000_TIMER_REG(0x34)
 #define	IXP2000_T3_CLR			IXP2000_TIMER_REG(0x38)
 #define	IXP2000_T4_CLR			IXP2000_TIMER_REG(0x3c)
 /* Timer watchdog enable for T4 */
 #define	IXP2000_TWDE			IXP2000_TIMER_REG(0x40)

 #define	WDT_ENABLE			0x00000001
 #define	TIMER_DIVIDER_256		0x00000008
 #define	TIMER_ENABLE			0x00000080
 #define	IRQ_MASK_TIMER1         	(1 << 4)

 /*
  * Interrupt controller registers
  */
 #define IXP2000_INTCTL_REG(x)		(volatile unsigned long*)(IXP2000_INTCTL_VIRT_BASE | (x))
 #define IXP2000_IRQ_STATUS		IXP2000_INTCTL_REG(0x08)
 #define IXP2000_IRQ_ENABLE		IXP2000_INTCTL_REG(0x10)
 #define IXP2000_IRQ_ENABLE_SET		IXP2000_INTCTL_REG(0x10)
 #define IXP2000_IRQ_ENABLE_CLR		IXP2000_INTCTL_REG(0x18)
 #define IXP2000_FIQ_ENABLE_CLR		IXP2000_INTCTL_REG(0x14)
 #define IXP2000_IRQ_ERR_STATUS		IXP2000_INTCTL_REG(0x24)
 #define IXP2000_IRQ_ERR_ENABLE_SET	IXP2000_INTCTL_REG(0x2c)
 #define IXP2000_FIQ_ERR_ENABLE_CLR	IXP2000_INTCTL_REG(0x30)
 #define IXP2000_IRQ_ERR_ENABLE_CLR	IXP2000_INTCTL_REG(0x34)
 #define IXP2000_IRQ_THD_RAW_STATUS_A_0	IXP2000_INTCTL_REG(0x60)
 #define IXP2000_IRQ_THD_RAW_STATUS_A_1	IXP2000_INTCTL_REG(0x64)
 #define IXP2000_IRQ_THD_RAW_STATUS_A_2	IXP2000_INTCTL_REG(0x68)
 #define IXP2000_IRQ_THD_RAW_STATUS_A_3	IXP2000_INTCTL_REG(0x6c)
 #define IXP2000_IRQ_THD_RAW_STATUS_B_0	IXP2000_INTCTL_REG(0x80)
 #define IXP2000_IRQ_THD_RAW_STATUS_B_1	IXP2000_INTCTL_REG(0x84)
 #define IXP2000_IRQ_THD_RAW_STATUS_B_2	IXP2000_INTCTL_REG(0x88)
 #define IXP2000_IRQ_THD_RAW_STATUS_B_3	IXP2000_INTCTL_REG(0x8c)
 #define IXP2000_IRQ_THD_ENABLE_SET_A_0	IXP2000_INTCTL_REG(0x160)
 #define IXP2000_IRQ_THD_ENABLE_SET_A_1	IXP2000_INTCTL_REG(0x164)
 #define IXP2000_IRQ_THD_ENABLE_SET_A_2	IXP2000_INTCTL_REG(0x168)
 #define IXP2000_IRQ_THD_ENABLE_SET_A_3	IXP2000_INTCTL_REG(0x16c)
 #define IXP2000_IRQ_THD_ENABLE_SET_B_0	IXP2000_INTCTL_REG(0x180)
 #define IXP2000_IRQ_THD_ENABLE_SET_B_1	IXP2000_INTCTL_REG(0x184)
 #define IXP2000_IRQ_THD_ENABLE_SET_B_2	IXP2000_INTCTL_REG(0x188)
 #define IXP2000_IRQ_THD_ENABLE_SET_B_3	IXP2000_INTCTL_REG(0x18c)
 #define IXP2000_IRQ_THD_ENABLE_CLEAR_A_0	IXP2000_INTCTL_REG(0x1e0)
 #define IXP2000_IRQ_THD_ENABLE_CLEAR_A_1	IXP2000_INTCTL_REG(0x1e4)
 #define IXP2000_IRQ_THD_ENABLE_CLEAR_A_2	IXP2000_INTCTL_REG(0x1e8)
 #define IXP2000_IRQ_THD_ENABLE_CLEAR_A_3	IXP2000_INTCTL_REG(0x1ec)
 #define IXP2000_IRQ_THD_ENABLE_CLEAR_B_0	IXP2000_INTCTL_REG(0x200)
 #define IXP2000_IRQ_THD_ENABLE_CLEAR_B_1	IXP2000_INTCTL_REG(0x204)
 #define IXP2000_IRQ_THD_ENABLE_CLEAR_B_2	IXP2000_INTCTL_REG(0x208)
 #define IXP2000_IRQ_THD_ENABLE_CLEAR_B_3	IXP2000_INTCTL_REG(0x20c)

 /*
  * Mask of valid IRQs in the 32-bit IRQ register. We use
  * this to mark certain IRQs as being invalid.
  */
 #define	IXP2000_VALID_IRQ_MASK	0x0f0fffff

 /*
  * PCI config register access from core
  */
 #define IXP2000_PCI_CREG(x)		(volatile unsigned long*)(IXP2000_PCI_CREG_VIRT_BASE | (x))
 #define IXP2000_PCI_CMDSTAT 		IXP2000_PCI_CREG(0x04)
 #define IXP2000_PCI_CSR_BAR		IXP2000_PCI_CREG(0x10)
 #define IXP2000_PCI_SRAM_BAR		IXP2000_PCI_CREG(0x14)
 #define IXP2000_PCI_SDRAM_BAR		IXP2000_PCI_CREG(0x18)

 /*
  * PCI CSRs
  */
 #define IXP2000_PCI_CSR(x)		(volatile unsigned long*)(IXP2000_PCI_CSR_VIRT_BASE | (x))

 /*
  * PCI outbound interrupts
  */
 #define IXP2000_PCI_OUT_INT_STATUS	IXP2000_PCI_CSR(0x30)
 #define IXP2000_PCI_OUT_INT_MASK	IXP2000_PCI_CSR(0x34)
 /*
  * PCI communications
  */
 #define IXP2000_PCI_MAILBOX0		IXP2000_PCI_CSR(0x50)
 #define IXP2000_PCI_MAILBOX1		IXP2000_PCI_CSR(0x54)
 #define IXP2000_PCI_MAILBOX2		IXP2000_PCI_CSR(0x58)
 #define IXP2000_PCI_MAILBOX3		IXP2000_PCI_CSR(0x5C)
 #define IXP2000_XSCALE_DOORBELL		IXP2000_PCI_CSR(0x60)
 #define IXP2000_XSCALE_DOORBELL_SETUP	IXP2000_PCI_CSR(0x64)
 #define IXP2000_PCI_DOORBELL		IXP2000_PCI_CSR(0x70)
 #define IXP2000_PCI_DOORBELL_SETUP	IXP2000_PCI_CSR(0x74)

 /*
  * DMA engines
  */
 #define IXP2000_PCI_CH1_BYTE_CNT	IXP2000_PCI_CSR(0x80)
 #define IXP2000_PCI_CH1_ADDR		IXP2000_PCI_CSR(0x84)
 #define IXP2000_PCI_CH1_DRAM_ADDR	IXP2000_PCI_CSR(0x88)
 #define IXP2000_PCI_CH1_DESC_PTR	IXP2000_PCI_CSR(0x8C)
 #define IXP2000_PCI_CH1_CNTRL		IXP2000_PCI_CSR(0x90)
 #define IXP2000_PCI_CH1_ME_PARAM	IXP2000_PCI_CSR(0x94)
 #define IXP2000_PCI_CH2_BYTE_CNT	IXP2000_PCI_CSR(0xA0)
 #define IXP2000_PCI_CH2_ADDR		IXP2000_PCI_CSR(0xA4)
 #define IXP2000_PCI_CH2_DRAM_ADDR	IXP2000_PCI_CSR(0xA8)
 #define IXP2000_PCI_CH2_DESC_PTR	IXP2000_PCI_CSR(0xAC)
 #define IXP2000_PCI_CH2_CNTRL		IXP2000_PCI_CSR(0xB0)
 #define IXP2000_PCI_CH2_ME_PARAM	IXP2000_PCI_CSR(0xB4)
 #define IXP2000_PCI_CH3_BYTE_CNT	IXP2000_PCI_CSR(0xC0)
 #define IXP2000_PCI_CH3_ADDR		IXP2000_PCI_CSR(0xC4)
 #define IXP2000_PCI_CH3_DRAM_ADDR	IXP2000_PCI_CSR(0xC8)
 #define IXP2000_PCI_CH3_DESC_PTR	IXP2000_PCI_CSR(0xCC)
 #define IXP2000_PCI_CH3_CNTRL		IXP2000_PCI_CSR(0xD0)
 #define IXP2000_PCI_CH3_ME_PARAM	IXP2000_PCI_CSR(0xD4)
 #define IXP2000_DMA_INF_MODE		IXP2000_PCI_CSR(0xE0)
 /*
  * Size masks for BARs
  */
 #define IXP2000_PCI_SRAM_BASE_ADDR_MASK	IXP2000_PCI_CSR(0xFC)
 #define IXP2000_PCI_DRAM_BASE_ADDR_MASK	IXP2000_PCI_CSR(0x100)
 /*
  * Control and uEngine related
  */
 #define IXP2000_PCI_CONTROL		IXP2000_PCI_CSR(0x13C)
 #define IXP2000_PCI_ADDR_EXT		IXP2000_PCI_CSR(0x140)
 #define IXP2000_PCI_ME_PUSH_STATUS	IXP2000_PCI_CSR(0x148)
 #define IXP2000_PCI_ME_PUSH_EN		IXP2000_PCI_CSR(0x14C)
 #define IXP2000_PCI_ERR_STATUS		IXP2000_PCI_CSR(0x150)
 #define IXP2000_PCI_ERR_ENABLE		IXP2000_PCI_CSR(0x154)
 /*
  * Inbound PCI interrupt control
  */
 #define IXP2000_PCI_XSCALE_INT_STATUS	IXP2000_PCI_CSR(0x158)
 #define IXP2000_PCI_XSCALE_INT_ENABLE	IXP2000_PCI_CSR(0x15C)

 #define IXP2000_PCICNTL_PNR		(1<<17)	/* PCI not Reset bit of PCI_CONTROL */
 #define IXP2000_PCICNTL_PCF		(1<<28)	/* PCI Centrolfunction bit */
 #define IXP2000_XSCALE_INT		(1<<1)	/* Interrupt from XScale to PCI */

 /* These are from the IRQ register in the PCI ISR register */
 #define PCI_CONTROL_BE_DEO		(1 << 22)	/* Big Endian Data Enable Out */
 #define PCI_CONTROL_BE_DEI		(1 << 21)	/* Big Endian Data Enable In  */
 #define PCI_CONTROL_BE_BEO		(1 << 20)	/* Big Endian Byte Enable Out */
 #define PCI_CONTROL_BE_BEI		(1 << 19)	/* Big Endian Byte Enable In  */
 #define PCI_CONTROL_IEE			(1 << 17)	/* I/O cycle Endian swap Enable */

 #define IXP2000_PCI_RST_REL		(1 << 2)
 #define CFG_RST_DIR			(*IXP2000_PCI_CONTROL & IXP2000_PCICNTL_PCF)
 #define CFG_PCI_BOOT_HOST		(1 << 2)
 #define CFG_BOOT_PROM			(1 << 1)

 /*
  * SlowPort CSRs
  *
  * The slowport is used to access things like flash, SONET framer control
  * ports, slave microprocessors, CPLDs, and others of chip memory mapped
  * peripherals.
  */
 #define	SLOWPORT_CSR(x)		(volatile unsigned long*)(IXP2000_SLOWPORT_CSR_VIRT_BASE | (x))

 #define	IXP2000_SLOWPORT_CCR		SLOWPORT_CSR(0x00)
 #define	IXP2000_SLOWPORT_WTC1		SLOWPORT_CSR(0x04)
 #define	IXP2000_SLOWPORT_WTC2		SLOWPORT_CSR(0x08)
 #define	IXP2000_SLOWPORT_RTC1		SLOWPORT_CSR(0x0c)
 #define	IXP2000_SLOWPORT_RTC2		SLOWPORT_CSR(0x10)
 #define	IXP2000_SLOWPORT_FSR		SLOWPORT_CSR(0x14)
 #define	IXP2000_SLOWPORT_PCR		SLOWPORT_CSR(0x18)
 #define	IXP2000_SLOWPORT_ADC		SLOWPORT_CSR(0x1C)
 #define	IXP2000_SLOWPORT_FAC		SLOWPORT_CSR(0x20)
 #define	IXP2000_SLOWPORT_FRM		SLOWPORT_CSR(0x24)
 #define	IXP2000_SLOWPORT_FIN		SLOWPORT_CSR(0x28)

 /*
  * CCR values.
  * The CCR configures the clock division for the slowport interface.
  */
 #define	SLOWPORT_CCR_DIV_1		0x00
 #define	SLOWPORT_CCR_DIV_2		0x01
 #define	SLOWPORT_CCR_DIV_4		0x02
 #define	SLOWPORT_CCR_DIV_6		0x03
 #define	SLOWPORT_CCR_DIV_8		0x04
 #define	SLOWPORT_CCR_DIV_10		0x05
 #define	SLOWPORT_CCR_DIV_12		0x06
 #define	SLOWPORT_CCR_DIV_14		0x07
 #define	SLOWPORT_CCR_DIV_16		0x08
 #define	SLOWPORT_CCR_DIV_18		0x09
 #define	SLOWPORT_CCR_DIV_20		0x0a
 #define	SLOWPORT_CCR_DIV_22		0x0b
 #define	SLOWPORT_CCR_DIV_24		0x0c
 #define	SLOWPORT_CCR_DIV_26		0x0d
 #define	SLOWPORT_CCR_DIV_28		0x0e
 #define	SLOWPORT_CCR_DIV_30		0x0f

 /*
  * PCR values.  PCR configure the mode of the interface.
  */
 #define	SLOWPORT_MODE_FLASH		0x00
 #define	SLOWPORT_MODE_LUCENT		0x01
 #define	SLOWPORT_MODE_PMC_SIERRA	0x02
 #define	SLOWPORT_MODE_INTEL_UP		0x03
 #define	SLOWPORT_MODE_MOTOROLA_UP	0x04

 /*
  * ADC values.  Defines data and address bus widths.
  */
 #define	SLOWPORT_ADDR_WIDTH_8		0x00
 #define	SLOWPORT_ADDR_WIDTH_16		0x01
 #define	SLOWPORT_ADDR_WIDTH_24		0x02
 #define	SLOWPORT_ADDR_WIDTH_32		0x03
 #define	SLOWPORT_DATA_WIDTH_8		0x00
 #define	SLOWPORT_DATA_WIDTH_16		0x10
 #define	SLOWPORT_DATA_WIDTH_24		0x20
 #define	SLOWPORT_DATA_WIDTH_32		0x30

 /*
  * Masks and shifts for various fields in the WTC and RTC registers.
  */
 #define	SLOWPORT_WRTC_MASK_HD		0x0003
 #define	SLOWPORT_WRTC_MASK_SU		0x003c
 #define	SLOWPORT_WRTC_MASK_PW		0x03c0

 #define	SLOWPORT_WRTC_SHIFT_HD		0x00
 #define	SLOWPORT_WRTC_SHIFT_SU		0x02
 #define	SLOWPORT_WRTC_SHFIT_PW		0x06


 /*
  * GPIO registers & GPIO interface.
  */
 #define IXP2000_GPIO_REG(x)		((volatile unsigned long*)(IXP2000_GPIO_VIRT_BASE+(x)))
 #define IXP2000_GPIO_PLR		IXP2000_GPIO_REG(0x00)
 #define IXP2000_GPIO_PDPR		IXP2000_GPIO_REG(0x04)
 #define IXP2000_GPIO_PDSR		IXP2000_GPIO_REG(0x08)
 #define IXP2000_GPIO_PDCR		IXP2000_GPIO_REG(0x0c)
 #define IXP2000_GPIO_POPR		IXP2000_GPIO_REG(0x10)
 #define IXP2000_GPIO_POSR		IXP2000_GPIO_REG(0x14)
 #define IXP2000_GPIO_POCR		IXP2000_GPIO_REG(0x18)
 #define IXP2000_GPIO_REDR		IXP2000_GPIO_REG(0x1c)
 #define IXP2000_GPIO_FEDR		IXP2000_GPIO_REG(0x20)
 #define IXP2000_GPIO_EDSR		IXP2000_GPIO_REG(0x24)
 #define IXP2000_GPIO_LSHR		IXP2000_GPIO_REG(0x28)
 #define IXP2000_GPIO_LSLR		IXP2000_GPIO_REG(0x2c)
 #define IXP2000_GPIO_LDSR		IXP2000_GPIO_REG(0x30)
 #define IXP2000_GPIO_INER		IXP2000_GPIO_REG(0x34)
 #define IXP2000_GPIO_INSR		IXP2000_GPIO_REG(0x38)
 #define IXP2000_GPIO_INCR		IXP2000_GPIO_REG(0x3c)
 #define IXP2000_GPIO_INST		IXP2000_GPIO_REG(0x40)

 /*
  * "Global" registers...whatever that's supposed to mean.
  */
 #define GLOBAL_REG_BASE			(IXP2000_GLOBAL_REG_VIRT_BASE + 0x0a00)
 #define GLOBAL_REG(x)			(volatile unsigned long*)(GLOBAL_REG_BASE | (x))

 #define IXP2000_PROD_ID			GLOBAL_REG(0x00)

 #define IXP2000_MAJ_PROD_TYPE_MASK	0x001F0000
 #define IXP2000_MAJ_PROD_TYPE_IXP2000	0x00000000
 #define IXP2000_MIN_PROD_TYPE_MASK 	0x0000FF00
 #define IXP2000_MIN_PROD_TYPE_IXP2400	0x00000200
 #define IXP2000_MIN_PROD_TYPE_IXP2850	0x00000100
 #define IXP2000_MIN_PROD_TYPE_IXP2800	0x00000000
 #define IXP2000_MAJ_REV_MASK	      	0x000000F0
 #define IXP2000_MIN_REV_MASK	      	0x0000000F
 #define IXP2000_PROD_ID_MASK		0xFFFFFFFF

 #define IXP2000_PRODUCT_ID		GLOBAL_REG(0x00)
 #define IXP2000_MISC_CONTROL		GLOBAL_REG(0x04)
 #define IXP2000_MSF_CLK_CNTRL  		GLOBAL_REG(0x08)
 #define IXP2000_RESET0      		GLOBAL_REG(0x0c)
 #define IXP2000_RESET1      		GLOBAL_REG(0x10)
 #define IXP2000_CCR            		GLOBAL_REG(0x14)
 #define	IXP2000_STRAP_OPTIONS  		GLOBAL_REG(0x18)

 #define	RSTALL				(1 << 16)
 #define	WDT_RESET_ENABLE		0x01000000


 #endif				/* _IXP2000_H_ */
	/*
	* include/asm-arm/arch-ixp2000/ixp2000-regs.h
	*
	* Chipset register definitions for IXP2400/2800 based systems.
	*
	* Original Author: Naeem Afzal <naeem.m.afzal@intel.com>
	*
	* Maintainer: Deepak Saxena <dsaxena@plexity.net>
	*
	* Copyright (C) 2002 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.
	*/
	#ifndef _IXP2000_REGS_H_
	#define _IXP2000_REGS_H_

	/*
	* Static I/O regions.
	*
	* Most of the registers are clumped in 4K regions spread throughout
	* the 0xc0000000 -> 0xc0100000 address range, but we just map in
	* the whole range using a single 1 MB section instead of small
	* 4K pages. This has two advantages for us:
	*
	* 1) We use only one TLB entry for large number of on-chip I/O devices.
	*
	* 2) We can easily set the Section attributes to XCB=101 on the IXP2400
	* as required per erratum #66. We accomplish this by using a
	* new MT_IXP2000_DEVICE memory type with the bits set as required.
	*
	* CAP stands for CSR Access Proxy.
	*
	* If you change the virtual address of this mapping, please propagate
	* the change to arch/arm/kernel/debug.S, which hardcodes the virtual
	* address of the UART located in this region.
	*/

	#define IXP2000_CAP_PHYS_BASE 0xc0000000
	#define IXP2000_CAP_VIRT_BASE 0xfef00000
	#define IXP2000_CAP_SIZE 0x00100000

	/*
	* Addresses for specific on-chip peripherals
	*/
	#define IXP2000_SLOWPORT_CSR_VIRT_BASE 0xfef80000
	#define IXP2000_GLOBAL_REG_VIRT_BASE 0xfef04000
	#define IXP2000_UART_PHYS_BASE 0xc0030000
	#define IXP2000_UART_VIRT_BASE 0xfef30000
	#define IXP2000_TIMER_VIRT_BASE 0xfef20000
	#define IXP2000_GPIO_VIRT_BASE 0Xfef10000

	/*
	* Devices outside of the 0xc0000000 -> 0xc0100000 range. The virtual
	* addresses of the INTCTL and PCI_CSR mappings are hardcoded in
	* entry-macro.S, so if you ever change these please propagate
	* the change.
	*/
	#define IXP2000_INTCTL_PHYS_BASE 0xd6000000
	#define IXP2000_INTCTL_VIRT_BASE 0xfee00000
	#define IXP2000_INTCTL_SIZE 0x00100000

	#define IXP2000_PCI_CREG_PHYS_BASE 0xde000000
	#define IXP2000_PCI_CREG_VIRT_BASE 0xfed00000
	#define IXP2000_PCI_CREG_SIZE 0x00100000

	#define IXP2000_PCI_CSR_PHYS_BASE 0xdf000000
	#define IXP2000_PCI_CSR_VIRT_BASE 0xfec00000
	#define IXP2000_PCI_CSR_SIZE 0x00100000

	#define IXP2000_PCI_IO_PHYS_BASE 0xd8000000
	#define IXP2000_PCI_IO_VIRT_BASE 0xfd000000
	#define IXP2000_PCI_IO_SIZE 0x01000000

	#define IXP2000_PCI_CFG0_PHYS_BASE 0xda000000
	#define IXP2000_PCI_CFG0_VIRT_BASE 0xfc000000
	#define IXP2000_PCI_CFG0_SIZE 0x01000000

	#define IXP2000_PCI_CFG1_PHYS_BASE 0xdb000000
	#define IXP2000_PCI_CFG1_VIRT_BASE 0xfb000000
	#define IXP2000_PCI_CFG1_SIZE 0x01000000

	/*
	* Timers
	*/
	#define IXP2000_TIMER_REG(x) ((volatile unsigned long*)(IXP2000_TIMER_VIRT_BASE \| (x)))
	/* Timer control */
	#define IXP2000_T1_CTL IXP2000_TIMER_REG(0x00)
	#define IXP2000_T2_CTL IXP2000_TIMER_REG(0x04)
	#define IXP2000_T3_CTL IXP2000_TIMER_REG(0x08)
	#define IXP2000_T4_CTL IXP2000_TIMER_REG(0x0c)
	/* Store initial value */
	#define IXP2000_T1_CLD IXP2000_TIMER_REG(0x10)
	#define IXP2000_T2_CLD IXP2000_TIMER_REG(0x14)
	#define IXP2000_T3_CLD IXP2000_TIMER_REG(0x18)
	#define IXP2000_T4_CLD IXP2000_TIMER_REG(0x1c)
	/* Read current value */
	#define IXP2000_T1_CSR IXP2000_TIMER_REG(0x20)
	#define IXP2000_T2_CSR IXP2000_TIMER_REG(0x24)
	#define IXP2000_T3_CSR IXP2000_TIMER_REG(0x28)
	#define IXP2000_T4_CSR IXP2000_TIMER_REG(0x2c)
	/* Clear associated timer interrupt */
	#define IXP2000_T1_CLR IXP2000_TIMER_REG(0x30)
	#define IXP2000_T2_CLR IXP2000_TIMER_REG(0x34)
	#define IXP2000_T3_CLR IXP2000_TIMER_REG(0x38)
	#define IXP2000_T4_CLR IXP2000_TIMER_REG(0x3c)
	/* Timer watchdog enable for T4 */
	#define IXP2000_TWDE IXP2000_TIMER_REG(0x40)

	#define WDT_ENABLE 0x00000001
	#define TIMER_DIVIDER_256 0x00000008
	#define TIMER_ENABLE 0x00000080
	#define IRQ_MASK_TIMER1 (1 << 4)

	/*
	* Interrupt controller registers
	*/
	#define IXP2000_INTCTL_REG(x) (volatile unsigned long*)(IXP2000_INTCTL_VIRT_BASE \| (x))
	#define IXP2000_IRQ_STATUS IXP2000_INTCTL_REG(0x08)
	#define IXP2000_IRQ_ENABLE IXP2000_INTCTL_REG(0x10)
	#define IXP2000_IRQ_ENABLE_SET IXP2000_INTCTL_REG(0x10)
	#define IXP2000_IRQ_ENABLE_CLR IXP2000_INTCTL_REG(0x18)
	#define IXP2000_FIQ_ENABLE_CLR IXP2000_INTCTL_REG(0x14)
	#define IXP2000_IRQ_ERR_STATUS IXP2000_INTCTL_REG(0x24)
	#define IXP2000_IRQ_ERR_ENABLE_SET IXP2000_INTCTL_REG(0x2c)
	#define IXP2000_FIQ_ERR_ENABLE_CLR IXP2000_INTCTL_REG(0x30)
	#define IXP2000_IRQ_ERR_ENABLE_CLR IXP2000_INTCTL_REG(0x34)
	#define IXP2000_IRQ_THD_RAW_STATUS_A_0 IXP2000_INTCTL_REG(0x60)
	#define IXP2000_IRQ_THD_RAW_STATUS_A_1 IXP2000_INTCTL_REG(0x64)
	#define IXP2000_IRQ_THD_RAW_STATUS_A_2 IXP2000_INTCTL_REG(0x68)
	#define IXP2000_IRQ_THD_RAW_STATUS_A_3 IXP2000_INTCTL_REG(0x6c)
	#define IXP2000_IRQ_THD_RAW_STATUS_B_0 IXP2000_INTCTL_REG(0x80)
	#define IXP2000_IRQ_THD_RAW_STATUS_B_1 IXP2000_INTCTL_REG(0x84)
	#define IXP2000_IRQ_THD_RAW_STATUS_B_2 IXP2000_INTCTL_REG(0x88)
	#define IXP2000_IRQ_THD_RAW_STATUS_B_3 IXP2000_INTCTL_REG(0x8c)
	#define IXP2000_IRQ_THD_ENABLE_SET_A_0 IXP2000_INTCTL_REG(0x160)
	#define IXP2000_IRQ_THD_ENABLE_SET_A_1 IXP2000_INTCTL_REG(0x164)
	#define IXP2000_IRQ_THD_ENABLE_SET_A_2 IXP2000_INTCTL_REG(0x168)
	#define IXP2000_IRQ_THD_ENABLE_SET_A_3 IXP2000_INTCTL_REG(0x16c)
	#define IXP2000_IRQ_THD_ENABLE_SET_B_0 IXP2000_INTCTL_REG(0x180)
	#define IXP2000_IRQ_THD_ENABLE_SET_B_1 IXP2000_INTCTL_REG(0x184)
	#define IXP2000_IRQ_THD_ENABLE_SET_B_2 IXP2000_INTCTL_REG(0x188)
	#define IXP2000_IRQ_THD_ENABLE_SET_B_3 IXP2000_INTCTL_REG(0x18c)
	#define IXP2000_IRQ_THD_ENABLE_CLEAR_A_0 IXP2000_INTCTL_REG(0x1e0)
	#define IXP2000_IRQ_THD_ENABLE_CLEAR_A_1 IXP2000_INTCTL_REG(0x1e4)
	#define IXP2000_IRQ_THD_ENABLE_CLEAR_A_2 IXP2000_INTCTL_REG(0x1e8)
	#define IXP2000_IRQ_THD_ENABLE_CLEAR_A_3 IXP2000_INTCTL_REG(0x1ec)
	#define IXP2000_IRQ_THD_ENABLE_CLEAR_B_0 IXP2000_INTCTL_REG(0x200)
	#define IXP2000_IRQ_THD_ENABLE_CLEAR_B_1 IXP2000_INTCTL_REG(0x204)
	#define IXP2000_IRQ_THD_ENABLE_CLEAR_B_2 IXP2000_INTCTL_REG(0x208)
	#define IXP2000_IRQ_THD_ENABLE_CLEAR_B_3 IXP2000_INTCTL_REG(0x20c)

	/*
	* Mask of valid IRQs in the 32-bit IRQ register. We use
	* this to mark certain IRQs as being invalid.
	*/
	#define IXP2000_VALID_IRQ_MASK 0x0f0fffff

	/*
	* PCI config register access from core
	*/
	#define IXP2000_PCI_CREG(x) (volatile unsigned long*)(IXP2000_PCI_CREG_VIRT_BASE \| (x))
	#define IXP2000_PCI_CMDSTAT IXP2000_PCI_CREG(0x04)
	#define IXP2000_PCI_CSR_BAR IXP2000_PCI_CREG(0x10)
	#define IXP2000_PCI_SRAM_BAR IXP2000_PCI_CREG(0x14)
	#define IXP2000_PCI_SDRAM_BAR IXP2000_PCI_CREG(0x18)

	/*
	* PCI CSRs
	*/
	#define IXP2000_PCI_CSR(x) (volatile unsigned long*)(IXP2000_PCI_CSR_VIRT_BASE \| (x))

	/*
	* PCI outbound interrupts
	*/
	#define IXP2000_PCI_OUT_INT_STATUS IXP2000_PCI_CSR(0x30)
	#define IXP2000_PCI_OUT_INT_MASK IXP2000_PCI_CSR(0x34)
	/*
	* PCI communications
	*/
	#define IXP2000_PCI_MAILBOX0 IXP2000_PCI_CSR(0x50)
	#define IXP2000_PCI_MAILBOX1 IXP2000_PCI_CSR(0x54)
	#define IXP2000_PCI_MAILBOX2 IXP2000_PCI_CSR(0x58)
	#define IXP2000_PCI_MAILBOX3 IXP2000_PCI_CSR(0x5C)
	#define IXP2000_XSCALE_DOORBELL IXP2000_PCI_CSR(0x60)
	#define IXP2000_XSCALE_DOORBELL_SETUP IXP2000_PCI_CSR(0x64)
	#define IXP2000_PCI_DOORBELL IXP2000_PCI_CSR(0x70)
	#define IXP2000_PCI_DOORBELL_SETUP IXP2000_PCI_CSR(0x74)

	/*
	* DMA engines
	*/
	#define IXP2000_PCI_CH1_BYTE_CNT IXP2000_PCI_CSR(0x80)
	#define IXP2000_PCI_CH1_ADDR IXP2000_PCI_CSR(0x84)
	#define IXP2000_PCI_CH1_DRAM_ADDR IXP2000_PCI_CSR(0x88)
	#define IXP2000_PCI_CH1_DESC_PTR IXP2000_PCI_CSR(0x8C)
	#define IXP2000_PCI_CH1_CNTRL IXP2000_PCI_CSR(0x90)
	#define IXP2000_PCI_CH1_ME_PARAM IXP2000_PCI_CSR(0x94)
	#define IXP2000_PCI_CH2_BYTE_CNT IXP2000_PCI_CSR(0xA0)
	#define IXP2000_PCI_CH2_ADDR IXP2000_PCI_CSR(0xA4)
	#define IXP2000_PCI_CH2_DRAM_ADDR IXP2000_PCI_CSR(0xA8)
	#define IXP2000_PCI_CH2_DESC_PTR IXP2000_PCI_CSR(0xAC)
	#define IXP2000_PCI_CH2_CNTRL IXP2000_PCI_CSR(0xB0)
	#define IXP2000_PCI_CH2_ME_PARAM IXP2000_PCI_CSR(0xB4)
	#define IXP2000_PCI_CH3_BYTE_CNT IXP2000_PCI_CSR(0xC0)
	#define IXP2000_PCI_CH3_ADDR IXP2000_PCI_CSR(0xC4)
	#define IXP2000_PCI_CH3_DRAM_ADDR IXP2000_PCI_CSR(0xC8)
	#define IXP2000_PCI_CH3_DESC_PTR IXP2000_PCI_CSR(0xCC)
	#define IXP2000_PCI_CH3_CNTRL IXP2000_PCI_CSR(0xD0)
	#define IXP2000_PCI_CH3_ME_PARAM IXP2000_PCI_CSR(0xD4)
	#define IXP2000_DMA_INF_MODE IXP2000_PCI_CSR(0xE0)
	/*
	* Size masks for BARs
	*/
	#define IXP2000_PCI_SRAM_BASE_ADDR_MASK IXP2000_PCI_CSR(0xFC)
	#define IXP2000_PCI_DRAM_BASE_ADDR_MASK IXP2000_PCI_CSR(0x100)
	/*
	* Control and uEngine related
	*/
	#define IXP2000_PCI_CONTROL IXP2000_PCI_CSR(0x13C)
	#define IXP2000_PCI_ADDR_EXT IXP2000_PCI_CSR(0x140)
	#define IXP2000_PCI_ME_PUSH_STATUS IXP2000_PCI_CSR(0x148)
	#define IXP2000_PCI_ME_PUSH_EN IXP2000_PCI_CSR(0x14C)
	#define IXP2000_PCI_ERR_STATUS IXP2000_PCI_CSR(0x150)
	#define IXP2000_PCI_ERR_ENABLE IXP2000_PCI_CSR(0x154)
	/*
	* Inbound PCI interrupt control
	*/
	#define IXP2000_PCI_XSCALE_INT_STATUS IXP2000_PCI_CSR(0x158)
	#define IXP2000_PCI_XSCALE_INT_ENABLE IXP2000_PCI_CSR(0x15C)

	#define IXP2000_PCICNTL_PNR (1<<17) /* PCI not Reset bit of PCI_CONTROL */
	#define IXP2000_PCICNTL_PCF (1<<28) /* PCI Centrolfunction bit */
	#define IXP2000_XSCALE_INT (1<<1) /* Interrupt from XScale to PCI */

	/* These are from the IRQ register in the PCI ISR register */
	#define PCI_CONTROL_BE_DEO (1 << 22) /* Big Endian Data Enable Out */
	#define PCI_CONTROL_BE_DEI (1 << 21) /* Big Endian Data Enable In */
	#define PCI_CONTROL_BE_BEO (1 << 20) /* Big Endian Byte Enable Out */
	#define PCI_CONTROL_BE_BEI (1 << 19) /* Big Endian Byte Enable In */
	#define PCI_CONTROL_IEE (1 << 17) /* I/O cycle Endian swap Enable */

	#define IXP2000_PCI_RST_REL (1 << 2)
	#define CFG_RST_DIR (*IXP2000_PCI_CONTROL & IXP2000_PCICNTL_PCF)
	#define CFG_PCI_BOOT_HOST (1 << 2)
	#define CFG_BOOT_PROM (1 << 1)

	/*
	* SlowPort CSRs
	*
	* The slowport is used to access things like flash, SONET framer control
	* ports, slave microprocessors, CPLDs, and others of chip memory mapped
	* peripherals.
	*/
	#define SLOWPORT_CSR(x) (volatile unsigned long*)(IXP2000_SLOWPORT_CSR_VIRT_BASE \| (x))

	#define IXP2000_SLOWPORT_CCR SLOWPORT_CSR(0x00)
	#define IXP2000_SLOWPORT_WTC1 SLOWPORT_CSR(0x04)
	#define IXP2000_SLOWPORT_WTC2 SLOWPORT_CSR(0x08)
	#define IXP2000_SLOWPORT_RTC1 SLOWPORT_CSR(0x0c)
	#define IXP2000_SLOWPORT_RTC2 SLOWPORT_CSR(0x10)
	#define IXP2000_SLOWPORT_FSR SLOWPORT_CSR(0x14)
	#define IXP2000_SLOWPORT_PCR SLOWPORT_CSR(0x18)
	#define IXP2000_SLOWPORT_ADC SLOWPORT_CSR(0x1C)
	#define IXP2000_SLOWPORT_FAC SLOWPORT_CSR(0x20)
	#define IXP2000_SLOWPORT_FRM SLOWPORT_CSR(0x24)
	#define IXP2000_SLOWPORT_FIN SLOWPORT_CSR(0x28)

	/*
	* CCR values.
	* The CCR configures the clock division for the slowport interface.
	*/
	#define SLOWPORT_CCR_DIV_1 0x00
	#define SLOWPORT_CCR_DIV_2 0x01
	#define SLOWPORT_CCR_DIV_4 0x02
	#define SLOWPORT_CCR_DIV_6 0x03
	#define SLOWPORT_CCR_DIV_8 0x04
	#define SLOWPORT_CCR_DIV_10 0x05
	#define SLOWPORT_CCR_DIV_12 0x06
	#define SLOWPORT_CCR_DIV_14 0x07
	#define SLOWPORT_CCR_DIV_16 0x08
	#define SLOWPORT_CCR_DIV_18 0x09
	#define SLOWPORT_CCR_DIV_20 0x0a
	#define SLOWPORT_CCR_DIV_22 0x0b
	#define SLOWPORT_CCR_DIV_24 0x0c
	#define SLOWPORT_CCR_DIV_26 0x0d
	#define SLOWPORT_CCR_DIV_28 0x0e
	#define SLOWPORT_CCR_DIV_30 0x0f

	/*
	* PCR values. PCR configure the mode of the interface.
	*/
	#define SLOWPORT_MODE_FLASH 0x00
	#define SLOWPORT_MODE_LUCENT 0x01
	#define SLOWPORT_MODE_PMC_SIERRA 0x02
	#define SLOWPORT_MODE_INTEL_UP 0x03
	#define SLOWPORT_MODE_MOTOROLA_UP 0x04

	/*
	* ADC values. Defines data and address bus widths.
	*/
	#define SLOWPORT_ADDR_WIDTH_8 0x00
	#define SLOWPORT_ADDR_WIDTH_16 0x01
	#define SLOWPORT_ADDR_WIDTH_24 0x02
	#define SLOWPORT_ADDR_WIDTH_32 0x03
	#define SLOWPORT_DATA_WIDTH_8 0x00
	#define SLOWPORT_DATA_WIDTH_16 0x10
	#define SLOWPORT_DATA_WIDTH_24 0x20
	#define SLOWPORT_DATA_WIDTH_32 0x30

	/*
	* Masks and shifts for various fields in the WTC and RTC registers.
	*/
	#define SLOWPORT_WRTC_MASK_HD 0x0003
	#define SLOWPORT_WRTC_MASK_SU 0x003c
	#define SLOWPORT_WRTC_MASK_PW 0x03c0

	#define SLOWPORT_WRTC_SHIFT_HD 0x00
	#define SLOWPORT_WRTC_SHIFT_SU 0x02
	#define SLOWPORT_WRTC_SHFIT_PW 0x06


	/*
	* GPIO registers & GPIO interface.
	*/
	#define IXP2000_GPIO_REG(x) ((volatile unsigned long*)(IXP2000_GPIO_VIRT_BASE+(x)))
	#define IXP2000_GPIO_PLR IXP2000_GPIO_REG(0x00)
	#define IXP2000_GPIO_PDPR IXP2000_GPIO_REG(0x04)
	#define IXP2000_GPIO_PDSR IXP2000_GPIO_REG(0x08)
	#define IXP2000_GPIO_PDCR IXP2000_GPIO_REG(0x0c)
	#define IXP2000_GPIO_POPR IXP2000_GPIO_REG(0x10)
	#define IXP2000_GPIO_POSR IXP2000_GPIO_REG(0x14)
	#define IXP2000_GPIO_POCR IXP2000_GPIO_REG(0x18)
	#define IXP2000_GPIO_REDR IXP2000_GPIO_REG(0x1c)
	#define IXP2000_GPIO_FEDR IXP2000_GPIO_REG(0x20)
	#define IXP2000_GPIO_EDSR IXP2000_GPIO_REG(0x24)
	#define IXP2000_GPIO_LSHR IXP2000_GPIO_REG(0x28)
	#define IXP2000_GPIO_LSLR IXP2000_GPIO_REG(0x2c)
	#define IXP2000_GPIO_LDSR IXP2000_GPIO_REG(0x30)
	#define IXP2000_GPIO_INER IXP2000_GPIO_REG(0x34)
	#define IXP2000_GPIO_INSR IXP2000_GPIO_REG(0x38)
	#define IXP2000_GPIO_INCR IXP2000_GPIO_REG(0x3c)
	#define IXP2000_GPIO_INST IXP2000_GPIO_REG(0x40)

	/*
	* "Global" registers...whatever that's supposed to mean.
	*/
	#define GLOBAL_REG_BASE (IXP2000_GLOBAL_REG_VIRT_BASE + 0x0a00)
	#define GLOBAL_REG(x) (volatile unsigned long*)(GLOBAL_REG_BASE \| (x))

	#define IXP2000_PROD_ID GLOBAL_REG(0x00)

	#define IXP2000_MAJ_PROD_TYPE_MASK 0x001F0000
	#define IXP2000_MAJ_PROD_TYPE_IXP2000 0x00000000
	#define IXP2000_MIN_PROD_TYPE_MASK 0x0000FF00
	#define IXP2000_MIN_PROD_TYPE_IXP2400 0x00000200
	#define IXP2000_MIN_PROD_TYPE_IXP2850 0x00000100
	#define IXP2000_MIN_PROD_TYPE_IXP2800 0x00000000
	#define IXP2000_MAJ_REV_MASK 0x000000F0
	#define IXP2000_MIN_REV_MASK 0x0000000F
	#define IXP2000_PROD_ID_MASK 0xFFFFFFFF

	#define IXP2000_PRODUCT_ID GLOBAL_REG(0x00)
	#define IXP2000_MISC_CONTROL GLOBAL_REG(0x04)
	#define IXP2000_MSF_CLK_CNTRL GLOBAL_REG(0x08)
	#define IXP2000_RESET0 GLOBAL_REG(0x0c)
	#define IXP2000_RESET1 GLOBAL_REG(0x10)
	#define IXP2000_CCR GLOBAL_REG(0x14)
	#define IXP2000_STRAP_OPTIONS GLOBAL_REG(0x18)

	#define RSTALL (1 << 16)
	#define WDT_RESET_ENABLE 0x01000000


	#endif /* _IXP2000_H_ */