LXR linux/arch/mips/include/asm/nile4.h

   1/*
   2 *  asm-mips/nile4.h -- NEC Vrc-5074 Nile 4 definitions
   3 *
   4 *  Copyright (C) 2000 Geert Uytterhoeven <geert@linux-m68k.org>
   5 *                     Sony Software Development Center Europe (SDCE), Brussels
   6 *
   7 *  This file is based on the following documentation:
   8 *
   9 *      NEC Vrc 5074 System Controller Data Sheet, June 1998
  10 */
  11
  12#ifndef _ASM_NILE4_H
  13#define _ASM_NILE4_H
  14
  15#define NILE4_BASE              0xbfa00000
  16#define NILE4_SIZE              0x00200000              /* 2 MB */
  17
  18
  19    /*
  20     *  Physical Device Address Registers (PDARs)
  21     */
  22
  23#define NILE4_SDRAM0    0x0000  /* SDRAM Bank 0 [R/W] */
  24#define NILE4_SDRAM1    0x0008  /* SDRAM Bank 1 [R/W] */
  25#define NILE4_DCS2      0x0010  /* Device Chip-Select 2 [R/W] */
  26#define NILE4_DCS3      0x0018  /* Device Chip-Select 3 [R/W] */
  27#define NILE4_DCS4      0x0020  /* Device Chip-Select 4 [R/W] */
  28#define NILE4_DCS5      0x0028  /* Device Chip-Select 5 [R/W] */
  29#define NILE4_DCS6      0x0030  /* Device Chip-Select 6 [R/W] */
  30#define NILE4_DCS7      0x0038  /* Device Chip-Select 7 [R/W] */
  31#define NILE4_DCS8      0x0040  /* Device Chip-Select 8 [R/W] */
  32#define NILE4_PCIW0     0x0060  /* PCI Address Window 0 [R/W] */
  33#define NILE4_PCIW1     0x0068  /* PCI Address Window 1 [R/W] */
  34#define NILE4_INTCS     0x0070  /* Controller Internal Registers and Devices */
  35                                /* [R/W] */
  36#define NILE4_BOOTCS    0x0078  /* Boot ROM Chip-Select [R/W] */
  37
  38
  39    /*
  40     *  CPU Interface Registers
  41     */
  42
  43#define NILE4_CPUSTAT   0x0080  /* CPU Status [R/W] */
  44#define NILE4_INTCTRL   0x0088  /* Interrupt Control [R/W] */
  45#define NILE4_INTSTAT0  0x0090  /* Interrupt Status 0 [R] */
  46#define NILE4_INTSTAT1  0x0098  /* Interrupt Status 1 and CPU Interrupt */
  47                                /* Enable [R/W] */
  48#define NILE4_INTCLR    0x00A0  /* Interrupt Clear [R/W] */
  49#define NILE4_INTPPES   0x00A8  /* PCI Interrupt Control [R/W] */
  50
  51
  52    /*
  53     *  Memory-Interface Registers
  54     */
  55
  56#define NILE4_MEMCTRL   0x00C0  /* Memory Control */
  57#define NILE4_ACSTIME   0x00C8  /* Memory Access Timing [R/W] */
  58#define NILE4_CHKERR    0x00D0  /* Memory Check Error Status [R] */
  59
  60
  61    /*
  62     *  PCI-Bus Registers
  63     */
  64
  65#define NILE4_PCICTRL   0x00E0  /* PCI Control [R/W] */
  66#define NILE4_PCIARB    0x00E8  /* PCI Arbiter [R/W] */
  67#define NILE4_PCIINIT0  0x00F0  /* PCI Master (Initiator) 0 [R/W] */
  68#define NILE4_PCIINIT1  0x00F8  /* PCI Master (Initiator) 1 [R/W] */
  69#define NILE4_PCIERR    0x00B8  /* PCI Error [R/W] */
  70
  71
  72    /*
  73     *  Local-Bus Registers
  74     */
  75
  76#define NILE4_LCNFG     0x0100  /* Local Bus Configuration [R/W] */
  77#define NILE4_LCST2     0x0110  /* Local Bus Chip-Select Timing 2 [R/W] */
  78#define NILE4_LCST3     0x0118  /* Local Bus Chip-Select Timing 3 [R/W] */
  79#define NILE4_LCST4     0x0120  /* Local Bus Chip-Select Timing 4 [R/W] */
  80#define NILE4_LCST5     0x0128  /* Local Bus Chip-Select Timing 5 [R/W] */
  81#define NILE4_LCST6     0x0130  /* Local Bus Chip-Select Timing 6 [R/W] */
  82#define NILE4_LCST7     0x0138  /* Local Bus Chip-Select Timing 7 [R/W] */
  83#define NILE4_LCST8     0x0140  /* Local Bus Chip-Select Timing 8 [R/W] */
  84#define NILE4_DCSFN     0x0150  /* Device Chip-Select Muxing and Output */
  85                                /* Enables [R/W] */
  86#define NILE4_DCSIO     0x0158  /* Device Chip-Selects As I/O Bits [R/W] */
  87#define NILE4_BCST      0x0178  /* Local Boot Chip-Select Timing [R/W] */
  88
  89
  90    /*
  91     *  DMA Registers
  92     */
  93
  94#define NILE4_DMACTRL0  0x0180  /* DMA Control 0 [R/W] */
  95#define NILE4_DMASRCA0  0x0188  /* DMA Source Address 0 [R/W] */
  96#define NILE4_DMADESA0  0x0190  /* DMA Destination Address 0 [R/W] */
  97#define NILE4_DMACTRL1  0x0198  /* DMA Control 1 [R/W] */
  98#define NILE4_DMASRCA1  0x01A0  /* DMA Source Address 1 [R/W] */
  99#define NILE4_DMADESA1  0x01A8  /* DMA Destination Address 1 [R/W] */
 100
 101
 102    /*
 103     *  Timer Registers
 104     */
 105
 106#define NILE4_T0CTRL    0x01C0  /* SDRAM Refresh Control [R/W] */
 107#define NILE4_T0CNTR    0x01C8  /* SDRAM Refresh Counter [R/W] */
 108#define NILE4_T1CTRL    0x01D0  /* CPU-Bus Read Time-Out Control [R/W] */
 109#define NILE4_T1CNTR    0x01D8  /* CPU-Bus Read Time-Out Counter [R/W] */
 110#define NILE4_T2CTRL    0x01E0  /* General-Purpose Timer Control [R/W] */
 111#define NILE4_T2CNTR    0x01E8  /* General-Purpose Timer Counter [R/W] */
 112#define NILE4_T3CTRL    0x01F0  /* Watchdog Timer Control [R/W] */
 113#define NILE4_T3CNTR    0x01F8  /* Watchdog Timer Counter [R/W] */
 114
 115
 116    /*
 117     *  PCI Configuration Space Registers
 118     */
 119
 120#define NILE4_PCI_BASE  0x0200
 121
 122#define NILE4_VID       0x0200  /* PCI Vendor ID [R] */
 123#define NILE4_DID       0x0202  /* PCI Device ID [R] */
 124#define NILE4_PCICMD    0x0204  /* PCI Command [R/W] */
 125#define NILE4_PCISTS    0x0206  /* PCI Status [R/W] */
 126#define NILE4_REVID     0x0208  /* PCI Revision ID [R] */
 127#define NILE4_CLASS     0x0209  /* PCI Class Code [R] */
 128#define NILE4_CLSIZ     0x020C  /* PCI Cache Line Size [R/W] */
 129#define NILE4_MLTIM     0x020D  /* PCI Latency Timer [R/W] */
 130#define NILE4_HTYPE     0x020E  /* PCI Header Type [R] */
 131#define NILE4_BIST      0x020F  /* BIST [R] (unimplemented) */
 132#define NILE4_BARC      0x0210  /* PCI Base Address Register Control [R/W] */
 133#define NILE4_BAR0      0x0218  /* PCI Base Address Register 0 [R/W] */
 134#define NILE4_BAR1      0x0220  /* PCI Base Address Register 1 [R/W] */
 135#define NILE4_CIS       0x0228  /* PCI Cardbus CIS Pointer [R] */
 136                                /* (unimplemented) */
 137#define NILE4_SSVID     0x022C  /* PCI Sub-System Vendor ID [R/W] */
 138#define NILE4_SSID      0x022E  /* PCI Sub-System ID [R/W] */
 139#define NILE4_ROM       0x0230  /* Expansion ROM Base Address [R] */
 140                                /* (unimplemented) */
 141#define NILE4_INTLIN    0x023C  /* PCI Interrupt Line [R/W] */
 142#define NILE4_INTPIN    0x023D  /* PCI Interrupt Pin [R] */
 143#define NILE4_MINGNT    0x023E  /* PCI Min_Gnt [R] (unimplemented) */
 144#define NILE4_MAXLAT    0x023F  /* PCI Max_Lat [R] (unimplemented) */
 145#define NILE4_BAR2      0x0240  /* PCI Base Address Register 2 [R/W] */
 146#define NILE4_BAR3      0x0248  /* PCI Base Address Register 3 [R/W] */
 147#define NILE4_BAR4      0x0250  /* PCI Base Address Register 4 [R/W] */
 148#define NILE4_BAR5      0x0258  /* PCI Base Address Register 5 [R/W] */
 149#define NILE4_BAR6      0x0260  /* PCI Base Address Register 6 [R/W] */
 150#define NILE4_BAR7      0x0268  /* PCI Base Address Register 7 [R/W] */
 151#define NILE4_BAR8      0x0270  /* PCI Base Address Register 8 [R/W] */
 152#define NILE4_BARB      0x0278  /* PCI Base Address Register BOOT [R/W] */
 153
 154
 155    /*
 156     *  Serial-Port Registers
 157     */
 158
 159#define NILE4_UART_BASE 0x0300
 160
 161#define NILE4_UARTRBR   0x0300  /* UART Receiver Data Buffer [R] */
 162#define NILE4_UARTTHR   0x0300  /* UART Transmitter Data Holding [W] */
 163#define NILE4_UARTIER   0x0308  /* UART Interrupt Enable [R/W] */
 164#define NILE4_UARTDLL   0x0300  /* UART Divisor Latch LSB [R/W] */
 165#define NILE4_UARTDLM   0x0308  /* UART Divisor Latch MSB [R/W] */
 166#define NILE4_UARTIIR   0x0310  /* UART Interrupt ID [R] */
 167#define NILE4_UARTFCR   0x0310  /* UART FIFO Control [W] */
 168#define NILE4_UARTLCR   0x0318  /* UART Line Control [R/W] */
 169#define NILE4_UARTMCR   0x0320  /* UART Modem Control [R/W] */
 170#define NILE4_UARTLSR   0x0328  /* UART Line Status [R/W] */
 171#define NILE4_UARTMSR   0x0330  /* UART Modem Status [R/W] */
 172#define NILE4_UARTSCR   0x0338  /* UART Scratch [R/W] */
 173
 174#define NILE4_UART_BASE_BAUD    520833  /* 100 MHz / 12 / 16 */
 175
 176
 177    /*
 178     *  Interrupt Lines
 179     */
 180
 181#define NILE4_INT_CPCE  0       /* CPU-Interface Parity-Error Interrupt */
 182#define NILE4_INT_CNTD  1       /* CPU No-Target Decode Interrupt */
 183#define NILE4_INT_MCE   2       /* Memory-Check Error Interrupt */
 184#define NILE4_INT_DMA   3       /* DMA Controller Interrupt */
 185#define NILE4_INT_UART  4       /* UART Interrupt */
 186#define NILE4_INT_WDOG  5       /* Watchdog Timer Interrupt */
 187#define NILE4_INT_GPT   6       /* General-Purpose Timer Interrupt */
 188#define NILE4_INT_LBRTD 7       /* Local-Bus Ready Timer Interrupt */
 189#define NILE4_INT_INTA  8       /* PCI Interrupt Signal INTA# */
 190#define NILE4_INT_INTB  9       /* PCI Interrupt Signal INTB# */
 191#define NILE4_INT_INTC  10      /* PCI Interrupt Signal INTC# */
 192#define NILE4_INT_INTD  11      /* PCI Interrupt Signal INTD# */
 193#define NILE4_INT_INTE  12      /* PCI Interrupt Signal INTE# (ISA cascade) */
 194#define NILE4_INT_RESV  13      /* Reserved */
 195#define NILE4_INT_PCIS  14      /* PCI SERR# Interrupt */
 196#define NILE4_INT_PCIE  15      /* PCI Internal Error Interrupt */
 197
 198
 199    /*
 200     *  Nile 4 Register Access
 201     */
 202
 203static inline void nile4_sync(void)
 204{
 205    volatile u32 *p = (volatile u32 *)0xbfc00000;
 206    (void)(*p);
 207}
 208
 209static inline void nile4_out32(u32 offset, u32 val)
 210{
 211    *(volatile u32 *)(NILE4_BASE+offset) = val;
 212    nile4_sync();
 213}
 214
 215static inline u32 nile4_in32(u32 offset)
 216{
 217    u32 val = *(volatile u32 *)(NILE4_BASE+offset);
 218    nile4_sync();
 219    return val;
 220}
 221
 222static inline void nile4_out16(u32 offset, u16 val)
 223{
 224    *(volatile u16 *)(NILE4_BASE+offset) = val;
 225    nile4_sync();
 226}
 227
 228static inline u16 nile4_in16(u32 offset)
 229{
 230    u16 val = *(volatile u16 *)(NILE4_BASE+offset);
 231    nile4_sync();
 232    return val;
 233}
 234
 235static inline void nile4_out8(u32 offset, u8 val)
 236{
 237    *(volatile u8 *)(NILE4_BASE+offset) = val;
 238    nile4_sync();
 239}
 240
 241static inline u8 nile4_in8(u32 offset)
 242{
 243    u8 val = *(volatile u8 *)(NILE4_BASE+offset);
 244    nile4_sync();
 245    return val;
 246}
 247
 248
 249    /*
 250     *  Physical Device Address Registers
 251     */
 252
 253extern void nile4_set_pdar(u32 pdar, u32 phys, u32 size, int width,
 254                           int on_memory_bus, int visible);
 255
 256
 257    /*
 258     *  PCI Master Registers
 259     */
 260
 261#define NILE4_PCICMD_IACK       0       /* PCI Interrupt Acknowledge */
 262#define NILE4_PCICMD_IO         1       /* PCI I/O Space */
 263#define NILE4_PCICMD_MEM        3       /* PCI Memory Space */
 264#define NILE4_PCICMD_CFG        5       /* PCI Configuration Space */
 265
 266
 267    /*
 268     *  PCI Address Spaces
 269     *
 270     *  Note that these are multiplexed using PCIINIT[01]!
 271     */
 272
 273#define NILE4_PCI_IO_BASE       0xa6000000
 274#define NILE4_PCI_MEM_BASE      0xa8000000
 275#define NILE4_PCI_CFG_BASE      NILE4_PCI_MEM_BASE
 276#define NILE4_PCI_IACK_BASE     NILE4_PCI_IO_BASE
 277
 278
 279extern void nile4_set_pmr(u32 pmr, u32 type, u32 addr);
 280
 281
 282    /*
 283     *  Interrupt Programming
 284     */
 285
 286#define NUM_I8259_INTERRUPTS    16
 287#define NUM_NILE4_INTERRUPTS    16
 288
 289#define IRQ_I8259_CASCADE       NILE4_INT_INTE
 290#define is_i8259_irq(irq)       ((irq) < NUM_I8259_INTERRUPTS)
 291#define nile4_to_irq(n)         ((n)+NUM_I8259_INTERRUPTS)
 292#define irq_to_nile4(n)         ((n)-NUM_I8259_INTERRUPTS)
 293
 294extern void nile4_map_irq(int nile4_irq, int cpu_irq);
 295extern void nile4_map_irq_all(int cpu_irq);
 296extern void nile4_enable_irq(unsigned int nile4_irq);
 297extern void nile4_disable_irq(unsigned int nile4_irq);
 298extern void nile4_disable_irq_all(void);
 299extern u16 nile4_get_irq_stat(int cpu_irq);
 300extern void nile4_enable_irq_output(int cpu_irq);
 301extern void nile4_disable_irq_output(int cpu_irq);
 302extern void nile4_set_pci_irq_polarity(int pci_irq, int high);
 303extern void nile4_set_pci_irq_level_or_edge(int pci_irq, int level);
 304extern void nile4_clear_irq(int nile4_irq);
 305extern void nile4_clear_irq_mask(u32 mask);
 306extern u8 nile4_i8259_iack(void);
 307extern void nile4_dump_irq_status(void);        /* Debug */
 308
 309#endif
 310