include/asm-arm/arch-ixp2000/ixp2000-regs.h

   1 /*
   2  * include/asm-arm/arch-ixp2000/ixp2000-regs.h
   3  *
   4  * Chipset register definitions for IXP2400/2800 based systems.
   5  *
   6  * Original Author: Naeem Afzal <naeem.m.afzal@intel.com>
   7  *
   8  * Maintainer: Deepak Saxena <dsaxena@plexity.net>
   9  *
  10  * Copyright (C) 2002 Intel Corp.
  11  * Copyright (C) 2003-2004 MontaVista Software, Inc.
  12  *
  13  *  This program is free software; you can redistribute  it and/or modify it
  14  *  under  the terms of  the GNU General  Public License as published by the
  15  *  Free Software Foundation;  either version 2 of the  License, or (at your
  16  *  option) any later version.
  17  */
  18 #ifndef _IXP2000_REGS_H_
  19 #define _IXP2000_REGS_H_
  20
  21 /*
  22  * IXP2000 linux memory map:
  23  *
  24  * virt         phys            size
  25  * fb000000     db000000        16M             PCI CFG1
  26  * fc000000     da000000        16M             PCI CFG0
  27  * fd000000     d8000000        16M             PCI I/O
  28  * fe[0-7]00000                 8M              per-platform mappings
  29  * feb00000     c8000000        1M              MSF
  30  * fec00000     df000000        1M              PCI CSRs
  31  * fed00000     de000000        1M              PCI CREG
  32  * fee00000     d6000000        1M              INTCTL
  33  * fef00000     c0000000        1M              CAP
  34  */
  35
  36 /*
  37  * Static I/O regions.
  38  *
  39  * Most of the registers are clumped in 4K regions spread throughout
  40  * the 0xc0000000 -> 0xc0100000 address range, but we just map in
  41  * the whole range using a single 1 MB section instead of small
  42  * 4K pages.  This has two advantages for us:
  43  *
  44  * 1) We use only one TLB entry for large number of on-chip I/O devices.
  45  *
  46  * 2) We can easily set the Section attributes to XCB=101 on the IXP2400
  47  *    as required per erratum #66.  We accomplish this by using a
  48  *    new MT_IXP2000_DEVICE memory type with the bits set as required.
  49  *
  50  * CAP stands for CSR Access Proxy.
  51  *
  52  * If you change the virtual address of this mapping, please propagate
  53  * the change to arch/arm/kernel/debug.S, which hardcodes the virtual
  54  * address of the UART located in this region.
  55  */
  56
  57 #define IXP2000_CAP_PHYS_BASE           0xc0000000
  58 #define IXP2000_CAP_VIRT_BASE           0xfef00000
  59 #define IXP2000_CAP_SIZE                0x00100000
  60
  61 /*
  62  * Addresses for specific on-chip peripherals
  63  */
  64 #define IXP2000_SLOWPORT_CSR_VIRT_BASE  0xfef80000
  65 #define IXP2000_GLOBAL_REG_VIRT_BASE    0xfef04000
  66 #define IXP2000_UART_PHYS_BASE          0xc0030000
  67 #define IXP2000_UART_VIRT_BASE          0xfef30000
  68 #define IXP2000_TIMER_VIRT_BASE         0xfef20000
  69 #define IXP2000_GPIO_VIRT_BASE          0Xfef10000
  70
  71 /*
  72  * Devices outside of the 0xc0000000 -> 0xc0100000 range.  The virtual
  73  * addresses of the INTCTL and PCI_CSR mappings are hardcoded in
  74  * entry-macro.S, so if you ever change these please propagate
  75  * the change.
  76  */
  77 #define IXP2000_INTCTL_PHYS_BASE        0xd6000000
  78 #define IXP2000_INTCTL_VIRT_BASE        0xfee00000
  79 #define IXP2000_INTCTL_SIZE             0x00100000
  80
  81 #define IXP2000_PCI_CREG_PHYS_BASE      0xde000000
  82 #define IXP2000_PCI_CREG_VIRT_BASE      0xfed00000
  83 #define IXP2000_PCI_CREG_SIZE           0x00100000
  84
  85 #define IXP2000_PCI_CSR_PHYS_BASE       0xdf000000
  86 #define IXP2000_PCI_CSR_VIRT_BASE       0xfec00000
  87 #define IXP2000_PCI_CSR_SIZE            0x00100000
  88
  89 #define IXP2000_MSF_PHYS_BASE           0xc8000000
  90 #define IXP2000_MSF_VIRT_BASE           0xfeb00000
  91 #define IXP2000_MSF_SIZE                0x00100000
  92
  93 #define IXP2000_PCI_IO_PHYS_BASE        0xd8000000
  94 #define IXP2000_PCI_IO_VIRT_BASE        0xfd000000
  95 #define IXP2000_PCI_IO_SIZE             0x01000000
  96
  97 #define IXP2000_PCI_CFG0_PHYS_BASE      0xda000000
  98 #define IXP2000_PCI_CFG0_VIRT_BASE      0xfc000000
  99 #define IXP2000_PCI_CFG0_SIZE           0x01000000
 100
 101 #define IXP2000_PCI_CFG1_PHYS_BASE      0xdb000000
 102 #define IXP2000_PCI_CFG1_VIRT_BASE      0xfb000000
 103 #define IXP2000_PCI_CFG1_SIZE           0x01000000
 104
 105 /*
 106  * Timers
 107  */
 108 #define IXP2000_TIMER_REG(x)            ((volatile unsigned long*)(IXP2000_TIMER_VIRT_BASE | (x)))
 109 /* Timer control */
 110 #define IXP2000_T1_CTL                  IXP2000_TIMER_REG(0x00)
 111 #define IXP2000_T2_CTL                  IXP2000_TIMER_REG(0x04)
 112 #define IXP2000_T3_CTL                  IXP2000_TIMER_REG(0x08)
 113 #define IXP2000_T4_CTL                  IXP2000_TIMER_REG(0x0c)
 114 /* Store initial value */
 115 #define IXP2000_T1_CLD                  IXP2000_TIMER_REG(0x10)
 116 #define IXP2000_T2_CLD                  IXP2000_TIMER_REG(0x14)
 117 #define IXP2000_T3_CLD                  IXP2000_TIMER_REG(0x18)
 118 #define IXP2000_T4_CLD                  IXP2000_TIMER_REG(0x1c)
 119 /* Read current value */
 120 #define IXP2000_T1_CSR                  IXP2000_TIMER_REG(0x20)
 121 #define IXP2000_T2_CSR                  IXP2000_TIMER_REG(0x24)
 122 #define IXP2000_T3_CSR                  IXP2000_TIMER_REG(0x28)
 123 #define IXP2000_T4_CSR                  IXP2000_TIMER_REG(0x2c)
 124 /* Clear associated timer interrupt */
 125 #define IXP2000_T1_CLR                  IXP2000_TIMER_REG(0x30)
 126 #define IXP2000_T2_CLR                  IXP2000_TIMER_REG(0x34)
 127 #define IXP2000_T3_CLR                  IXP2000_TIMER_REG(0x38)
 128 #define IXP2000_T4_CLR                  IXP2000_TIMER_REG(0x3c)
 129 /* Timer watchdog enable for T4 */
 130 #define IXP2000_TWDE                    IXP2000_TIMER_REG(0x40)
 131
 132 #define WDT_ENABLE                      0x00000001
 133 #define TIMER_DIVIDER_256               0x00000008
 134 #define TIMER_ENABLE                    0x00000080
 135 #define IRQ_MASK_TIMER1                 (1 << 4)
 136
 137 /*
 138  * Interrupt controller registers
 139  */
 140 #define IXP2000_INTCTL_REG(x)           (volatile unsigned long*)(IXP2000_INTCTL_VIRT_BASE | (x))
 141 #define IXP2000_IRQ_STATUS              IXP2000_INTCTL_REG(0x08)
 142 #define IXP2000_IRQ_ENABLE              IXP2000_INTCTL_REG(0x10)
 143 #define IXP2000_IRQ_ENABLE_SET          IXP2000_INTCTL_REG(0x10)
 144 #define IXP2000_IRQ_ENABLE_CLR          IXP2000_INTCTL_REG(0x18)
 145 #define IXP2000_FIQ_ENABLE_CLR          IXP2000_INTCTL_REG(0x14)
 146 #define IXP2000_IRQ_ERR_STATUS          IXP2000_INTCTL_REG(0x24)
 147 #define IXP2000_IRQ_ERR_ENABLE_SET      IXP2000_INTCTL_REG(0x2c)
 148 #define IXP2000_FIQ_ERR_ENABLE_CLR      IXP2000_INTCTL_REG(0x30)
 149 #define IXP2000_IRQ_ERR_ENABLE_CLR      IXP2000_INTCTL_REG(0x34)
 150 #define IXP2000_IRQ_THD_RAW_STATUS_A_0  IXP2000_INTCTL_REG(0x60)
 151 #define IXP2000_IRQ_THD_RAW_STATUS_A_1  IXP2000_INTCTL_REG(0x64)
 152 #define IXP2000_IRQ_THD_RAW_STATUS_A_2  IXP2000_INTCTL_REG(0x68)
 153 #define IXP2000_IRQ_THD_RAW_STATUS_A_3  IXP2000_INTCTL_REG(0x6c)
 154 #define IXP2000_IRQ_THD_RAW_STATUS_B_0  IXP2000_INTCTL_REG(0x80)
 155 #define IXP2000_IRQ_THD_RAW_STATUS_B_1  IXP2000_INTCTL_REG(0x84)
 156 #define IXP2000_IRQ_THD_RAW_STATUS_B_2  IXP2000_INTCTL_REG(0x88)
 157 #define IXP2000_IRQ_THD_RAW_STATUS_B_3  IXP2000_INTCTL_REG(0x8c)
 158 #define IXP2000_IRQ_THD_ENABLE_SET_A_0  IXP2000_INTCTL_REG(0x160)
 159 #define IXP2000_IRQ_THD_ENABLE_SET_A_1  IXP2000_INTCTL_REG(0x164)
 160 #define IXP2000_IRQ_THD_ENABLE_SET_A_2  IXP2000_INTCTL_REG(0x168)
 161 #define IXP2000_IRQ_THD_ENABLE_SET_A_3  IXP2000_INTCTL_REG(0x16c)
 162 #define IXP2000_IRQ_THD_ENABLE_SET_B_0  IXP2000_INTCTL_REG(0x180)
 163 #define IXP2000_IRQ_THD_ENABLE_SET_B_1  IXP2000_INTCTL_REG(0x184)
 164 #define IXP2000_IRQ_THD_ENABLE_SET_B_2  IXP2000_INTCTL_REG(0x188)
 165 #define IXP2000_IRQ_THD_ENABLE_SET_B_3  IXP2000_INTCTL_REG(0x18c)
 166 #define IXP2000_IRQ_THD_ENABLE_CLEAR_A_0        IXP2000_INTCTL_REG(0x1e0)
 167 #define IXP2000_IRQ_THD_ENABLE_CLEAR_A_1        IXP2000_INTCTL_REG(0x1e4)
 168 #define IXP2000_IRQ_THD_ENABLE_CLEAR_A_2        IXP2000_INTCTL_REG(0x1e8)
 169 #define IXP2000_IRQ_THD_ENABLE_CLEAR_A_3        IXP2000_INTCTL_REG(0x1ec)
 170 #define IXP2000_IRQ_THD_ENABLE_CLEAR_B_0        IXP2000_INTCTL_REG(0x200)
 171 #define IXP2000_IRQ_THD_ENABLE_CLEAR_B_1        IXP2000_INTCTL_REG(0x204)
 172 #define IXP2000_IRQ_THD_ENABLE_CLEAR_B_2        IXP2000_INTCTL_REG(0x208)
 173 #define IXP2000_IRQ_THD_ENABLE_CLEAR_B_3        IXP2000_INTCTL_REG(0x20c)
 174
 175 /*
 176  * Mask of valid IRQs in the 32-bit IRQ register. We use
 177  * this to mark certain IRQs as being invalid.
 178  */
 179 #define IXP2000_VALID_IRQ_MASK  0x0f0fffff
 180
 181 /*
 182  * PCI config register access from core
 183  */
 184 #define IXP2000_PCI_CREG(x)             (volatile unsigned long*)(IXP2000_PCI_CREG_VIRT_BASE | (x))
 185 #define IXP2000_PCI_CMDSTAT             IXP2000_PCI_CREG(0x04)
 186 #define IXP2000_PCI_CSR_BAR             IXP2000_PCI_CREG(0x10)
 187 #define IXP2000_PCI_SRAM_BAR            IXP2000_PCI_CREG(0x14)
 188 #define IXP2000_PCI_SDRAM_BAR           IXP2000_PCI_CREG(0x18)
 189
 190 /*
 191  * PCI CSRs
 192  */
 193 #define IXP2000_PCI_CSR(x)              (volatile unsigned long*)(IXP2000_PCI_CSR_VIRT_BASE | (x))
 194
 195 /*
 196  * PCI outbound interrupts
 197  */
 198 #define IXP2000_PCI_OUT_INT_STATUS      IXP2000_PCI_CSR(0x30)
 199 #define IXP2000_PCI_OUT_INT_MASK        IXP2000_PCI_CSR(0x34)
 200 /*
 201  * PCI communications
 202  */
 203 #define IXP2000_PCI_MAILBOX0            IXP2000_PCI_CSR(0x50)
 204 #define IXP2000_PCI_MAILBOX1            IXP2000_PCI_CSR(0x54)
 205 #define IXP2000_PCI_MAILBOX2            IXP2000_PCI_CSR(0x58)
 206 #define IXP2000_PCI_MAILBOX3            IXP2000_PCI_CSR(0x5C)
 207 #define IXP2000_XSCALE_DOORBELL         IXP2000_PCI_CSR(0x60)
 208 #define IXP2000_XSCALE_DOORBELL_SETUP   IXP2000_PCI_CSR(0x64)
 209 #define IXP2000_PCI_DOORBELL            IXP2000_PCI_CSR(0x70)
 210 #define IXP2000_PCI_DOORBELL_SETUP      IXP2000_PCI_CSR(0x74)
 211
 212 /*
 213  * DMA engines
 214  */
 215 #define IXP2000_PCI_CH1_BYTE_CNT        IXP2000_PCI_CSR(0x80)
 216 #define IXP2000_PCI_CH1_ADDR            IXP2000_PCI_CSR(0x84)
 217 #define IXP2000_PCI_CH1_DRAM_ADDR       IXP2000_PCI_CSR(0x88)
 218 #define IXP2000_PCI_CH1_DESC_PTR        IXP2000_PCI_CSR(0x8C)
 219 #define IXP2000_PCI_CH1_CNTRL           IXP2000_PCI_CSR(0x90)
 220 #define IXP2000_PCI_CH1_ME_PARAM        IXP2000_PCI_CSR(0x94)
 221 #define IXP2000_PCI_CH2_BYTE_CNT        IXP2000_PCI_CSR(0xA0)
 222 #define IXP2000_PCI_CH2_ADDR            IXP2000_PCI_CSR(0xA4)
 223 #define IXP2000_PCI_CH2_DRAM_ADDR       IXP2000_PCI_CSR(0xA8)
 224 #define IXP2000_PCI_CH2_DESC_PTR        IXP2000_PCI_CSR(0xAC)
 225 #define IXP2000_PCI_CH2_CNTRL           IXP2000_PCI_CSR(0xB0)
 226 #define IXP2000_PCI_CH2_ME_PARAM        IXP2000_PCI_CSR(0xB4)
 227 #define IXP2000_PCI_CH3_BYTE_CNT        IXP2000_PCI_CSR(0xC0)
 228 #define IXP2000_PCI_CH3_ADDR            IXP2000_PCI_CSR(0xC4)
 229 #define IXP2000_PCI_CH3_DRAM_ADDR       IXP2000_PCI_CSR(0xC8)
 230 #define IXP2000_PCI_CH3_DESC_PTR        IXP2000_PCI_CSR(0xCC)
 231 #define IXP2000_PCI_CH3_CNTRL           IXP2000_PCI_CSR(0xD0)
 232 #define IXP2000_PCI_CH3_ME_PARAM        IXP2000_PCI_CSR(0xD4)
 233 #define IXP2000_DMA_INF_MODE            IXP2000_PCI_CSR(0xE0)
 234 /*
 235  * Size masks for BARs
 236  */
 237 #define IXP2000_PCI_SRAM_BASE_ADDR_MASK IXP2000_PCI_CSR(0xFC)
 238 #define IXP2000_PCI_DRAM_BASE_ADDR_MASK IXP2000_PCI_CSR(0x100)
 239 /*
 240  * Control and uEngine related
 241  */
 242 #define IXP2000_PCI_CONTROL             IXP2000_PCI_CSR(0x13C)
 243 #define IXP2000_PCI_ADDR_EXT            IXP2000_PCI_CSR(0x140)
 244 #define IXP2000_PCI_ME_PUSH_STATUS      IXP2000_PCI_CSR(0x148)
 245 #define IXP2000_PCI_ME_PUSH_EN          IXP2000_PCI_CSR(0x14C)
 246 #define IXP2000_PCI_ERR_STATUS          IXP2000_PCI_CSR(0x150)
 247 #define IXP2000_PCI_ERR_ENABLE          IXP2000_PCI_CSR(0x154)
 248 /*
 249  * Inbound PCI interrupt control
 250  */
 251 #define IXP2000_PCI_XSCALE_INT_STATUS   IXP2000_PCI_CSR(0x158)
 252 #define IXP2000_PCI_XSCALE_INT_ENABLE   IXP2000_PCI_CSR(0x15C)
 253
 254 #define IXP2000_PCICNTL_PNR             (1<<17) /* PCI not Reset bit of PCI_CONTROL */
 255 #define IXP2000_PCICNTL_PCF             (1<<28) /* PCI Centrolfunction bit */
 256 #define IXP2000_XSCALE_INT              (1<<1)  /* Interrupt from XScale to PCI */
 257
 258 /* These are from the IRQ register in the PCI ISR register */
 259 #define PCI_CONTROL_BE_DEO              (1 << 22)       /* Big Endian Data Enable Out */
 260 #define PCI_CONTROL_BE_DEI              (1 << 21)       /* Big Endian Data Enable In  */
 261 #define PCI_CONTROL_BE_BEO              (1 << 20)       /* Big Endian Byte Enable Out */
 262 #define PCI_CONTROL_BE_BEI              (1 << 19)       /* Big Endian Byte Enable In  */
 263 #define PCI_CONTROL_IEE                 (1 << 17)       /* I/O cycle Endian swap Enable */
 264
 265 #define IXP2000_PCI_RST_REL             (1 << 2)
 266 #define CFG_RST_DIR                     (*IXP2000_PCI_CONTROL & IXP2000_PCICNTL_PCF)
 267 #define CFG_PCI_BOOT_HOST               (1 << 2)
 268 #define CFG_BOOT_PROM                   (1 << 1)
 269
 270 /*
 271  * SlowPort CSRs
 272  *
 273  * The slowport is used to access things like flash, SONET framer control
 274  * ports, slave microprocessors, CPLDs, and others of chip memory mapped
 275  * peripherals.
 276  */
 277 #define SLOWPORT_CSR(x)         (volatile unsigned long*)(IXP2000_SLOWPORT_CSR_VIRT_BASE | (x))
 278
 279 #define IXP2000_SLOWPORT_CCR            SLOWPORT_CSR(0x00)
 280 #define IXP2000_SLOWPORT_WTC1           SLOWPORT_CSR(0x04)
 281 #define IXP2000_SLOWPORT_WTC2           SLOWPORT_CSR(0x08)
 282 #define IXP2000_SLOWPORT_RTC1           SLOWPORT_CSR(0x0c)
 283 #define IXP2000_SLOWPORT_RTC2           SLOWPORT_CSR(0x10)
 284 #define IXP2000_SLOWPORT_FSR            SLOWPORT_CSR(0x14)
 285 #define IXP2000_SLOWPORT_PCR            SLOWPORT_CSR(0x18)
 286 #define IXP2000_SLOWPORT_ADC            SLOWPORT_CSR(0x1C)
 287 #define IXP2000_SLOWPORT_FAC            SLOWPORT_CSR(0x20)
 288 #define IXP2000_SLOWPORT_FRM            SLOWPORT_CSR(0x24)
 289 #define IXP2000_SLOWPORT_FIN            SLOWPORT_CSR(0x28)
 290
 291 /*
 292  * CCR values.
 293  * The CCR configures the clock division for the slowport interface.
 294  */
 295 #define SLOWPORT_CCR_DIV_1              0x00
 296 #define SLOWPORT_CCR_DIV_2              0x01
 297 #define SLOWPORT_CCR_DIV_4              0x02
 298 #define SLOWPORT_CCR_DIV_6              0x03
 299 #define SLOWPORT_CCR_DIV_8              0x04
 300 #define SLOWPORT_CCR_DIV_10             0x05
 301 #define SLOWPORT_CCR_DIV_12             0x06
 302 #define SLOWPORT_CCR_DIV_14             0x07
 303 #define SLOWPORT_CCR_DIV_16             0x08
 304 #define SLOWPORT_CCR_DIV_18             0x09
 305 #define SLOWPORT_CCR_DIV_20             0x0a
 306 #define SLOWPORT_CCR_DIV_22             0x0b
 307 #define SLOWPORT_CCR_DIV_24             0x0c
 308 #define SLOWPORT_CCR_DIV_26             0x0d
 309 #define SLOWPORT_CCR_DIV_28             0x0e
 310 #define SLOWPORT_CCR_DIV_30             0x0f
 311
 312 /*
 313  * PCR values.  PCR configure the mode of the interface.
 314  */
 315 #define SLOWPORT_MODE_FLASH             0x00
 316 #define SLOWPORT_MODE_LUCENT            0x01
 317 #define SLOWPORT_MODE_PMC_SIERRA        0x02
 318 #define SLOWPORT_MODE_INTEL_UP          0x03
 319 #define SLOWPORT_MODE_MOTOROLA_UP       0x04
 320
 321 /*
 322  * ADC values.  Defines data and address bus widths.
 323  */
 324 #define SLOWPORT_ADDR_WIDTH_8           0x00
 325 #define SLOWPORT_ADDR_WIDTH_16          0x01
 326 #define SLOWPORT_ADDR_WIDTH_24          0x02
 327 #define SLOWPORT_ADDR_WIDTH_32          0x03
 328 #define SLOWPORT_DATA_WIDTH_8           0x00
 329 #define SLOWPORT_DATA_WIDTH_16          0x10
 330 #define SLOWPORT_DATA_WIDTH_24          0x20
 331 #define SLOWPORT_DATA_WIDTH_32          0x30
 332
 333 /*
 334  * Masks and shifts for various fields in the WTC and RTC registers.
 335  */
 336 #define SLOWPORT_WRTC_MASK_HD           0x0003
 337 #define SLOWPORT_WRTC_MASK_SU           0x003c
 338 #define SLOWPORT_WRTC_MASK_PW           0x03c0
 339
 340 #define SLOWPORT_WRTC_SHIFT_HD          0x00
 341 #define SLOWPORT_WRTC_SHIFT_SU          0x02
 342 #define SLOWPORT_WRTC_SHFIT_PW          0x06
 343
 344
 345 /*
 346  * GPIO registers & GPIO interface.
 347  */
 348 #define IXP2000_GPIO_REG(x)             ((volatile unsigned long*)(IXP2000_GPIO_VIRT_BASE+(x)))
 349 #define IXP2000_GPIO_PLR                IXP2000_GPIO_REG(0x00)
 350 #define IXP2000_GPIO_PDPR               IXP2000_GPIO_REG(0x04)
 351 #define IXP2000_GPIO_PDSR               IXP2000_GPIO_REG(0x08)
 352 #define IXP2000_GPIO_PDCR               IXP2000_GPIO_REG(0x0c)
 353 #define IXP2000_GPIO_POPR               IXP2000_GPIO_REG(0x10)
 354 #define IXP2000_GPIO_POSR               IXP2000_GPIO_REG(0x14)
 355 #define IXP2000_GPIO_POCR               IXP2000_GPIO_REG(0x18)
 356 #define IXP2000_GPIO_REDR               IXP2000_GPIO_REG(0x1c)
 357 #define IXP2000_GPIO_FEDR               IXP2000_GPIO_REG(0x20)
 358 #define IXP2000_GPIO_EDSR               IXP2000_GPIO_REG(0x24)
 359 #define IXP2000_GPIO_LSHR               IXP2000_GPIO_REG(0x28)
 360 #define IXP2000_GPIO_LSLR               IXP2000_GPIO_REG(0x2c)
 361 #define IXP2000_GPIO_LDSR               IXP2000_GPIO_REG(0x30)
 362 #define IXP2000_GPIO_INER               IXP2000_GPIO_REG(0x34)
 363 #define IXP2000_GPIO_INSR               IXP2000_GPIO_REG(0x38)
 364 #define IXP2000_GPIO_INCR               IXP2000_GPIO_REG(0x3c)
 365 #define IXP2000_GPIO_INST               IXP2000_GPIO_REG(0x40)
 366
 367 /*
 368  * "Global" registers...whatever that's supposed to mean.
 369  */
 370 #define GLOBAL_REG_BASE                 (IXP2000_GLOBAL_REG_VIRT_BASE + 0x0a00)
 371 #define GLOBAL_REG(x)                   (volatile unsigned long*)(GLOBAL_REG_BASE | (x))
 372
 373 #define IXP2000_MAJ_PROD_TYPE_MASK      0x001F0000
 374 #define IXP2000_MAJ_PROD_TYPE_IXP2000   0x00000000
 375 #define IXP2000_MIN_PROD_TYPE_MASK      0x0000FF00
 376 #define IXP2000_MIN_PROD_TYPE_IXP2400   0x00000200
 377 #define IXP2000_MIN_PROD_TYPE_IXP2850   0x00000100
 378 #define IXP2000_MIN_PROD_TYPE_IXP2800   0x00000000
 379 #define IXP2000_MAJ_REV_MASK            0x000000F0
 380 #define IXP2000_MIN_REV_MASK            0x0000000F
 381 #define IXP2000_PROD_ID_MASK            0xFFFFFFFF
 382
 383 #define IXP2000_PRODUCT_ID              GLOBAL_REG(0x00)
 384 #define IXP2000_MISC_CONTROL            GLOBAL_REG(0x04)
 385 #define IXP2000_MSF_CLK_CNTRL           GLOBAL_REG(0x08)
 386 #define IXP2000_RESET0                  GLOBAL_REG(0x0c)
 387 #define IXP2000_RESET1                  GLOBAL_REG(0x10)
 388 #define IXP2000_CCR                     GLOBAL_REG(0x14)
 389 #define IXP2000_STRAP_OPTIONS           GLOBAL_REG(0x18)
 390
 391 #define RSTALL                          (1 << 16)
 392 #define WDT_RESET_ENABLE                0x01000000
 393
 394
 395 #endif                          /* _IXP2000_H_ */