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/*
* 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_
/*
* IXP2000 linux memory map:
*
* virt phys size
* fb000000 db000000 16M PCI CFG1
* fc000000 da000000 16M PCI CFG0
* fd000000 d8000000 16M PCI I/O
* fe[0-7]00000 8M per-platform mappings
* feb00000 c8000000 1M MSF
* fec00000 df000000 1M PCI CSRs
* fed00000 de000000 1M PCI CREG
* fee00000 d6000000 1M INTCTL
* fef00000 c0000000 1M CAP
*/
/*
* 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_MSF_PHYS_BASE 0xc8000000
#define IXP2000_MSF_VIRT_BASE 0xfeb00000
#define IXP2000_MSF_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_ */
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