arch/mips/include/asm/nile4.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  *  asm-mips/nile4.h -- NEC Vrc-5074 Nile 4 definitions
   4  *
   5  *  Copyright (C) 2000 Geert Uytterhoeven <geert@linux-m68k.org>
   6  *                     Sony Software Development Center Europe (SDCE), Brussels
   7  *
   8  *  This file is based on the following documentation:
   9  *
  10  *      NEC Vrc 5074 System Controller Data Sheet, June 1998
  11  */
  12
  13 #ifndef _ASM_NILE4_H
  14 #define _ASM_NILE4_H
  15
  16 #define NILE4_BASE              0xbfa00000
  17 #define NILE4_SIZE              0x00200000              /* 2 MB */
  18
  19
  20     /*
  21      *  Physical Device Address Registers (PDARs)
  22      */
  23
  24 #define NILE4_SDRAM0    0x0000  /* SDRAM Bank 0 [R/W] */
  25 #define NILE4_SDRAM1    0x0008  /* SDRAM Bank 1 [R/W] */
  26 #define NILE4_DCS2      0x0010  /* Device Chip-Select 2 [R/W] */
  27 #define NILE4_DCS3      0x0018  /* Device Chip-Select 3 [R/W] */
  28 #define NILE4_DCS4      0x0020  /* Device Chip-Select 4 [R/W] */
  29 #define NILE4_DCS5      0x0028  /* Device Chip-Select 5 [R/W] */
  30 #define NILE4_DCS6      0x0030  /* Device Chip-Select 6 [R/W] */
  31 #define NILE4_DCS7      0x0038  /* Device Chip-Select 7 [R/W] */
  32 #define NILE4_DCS8      0x0040  /* Device Chip-Select 8 [R/W] */
  33 #define NILE4_PCIW0     0x0060  /* PCI Address Window 0 [R/W] */
  34 #define NILE4_PCIW1     0x0068  /* PCI Address Window 1 [R/W] */
  35 #define NILE4_INTCS     0x0070  /* Controller Internal Registers and Devices */
  36                                 /* [R/W] */
  37 #define NILE4_BOOTCS    0x0078  /* Boot ROM Chip-Select [R/W] */
  38
  39
  40     /*
  41      *  CPU Interface Registers
  42      */
  43
  44 #define NILE4_CPUSTAT   0x0080  /* CPU Status [R/W] */
  45 #define NILE4_INTCTRL   0x0088  /* Interrupt Control [R/W] */
  46 #define NILE4_INTSTAT0  0x0090  /* Interrupt Status 0 [R] */
  47 #define NILE4_INTSTAT1  0x0098  /* Interrupt Status 1 and CPU Interrupt */
  48                                 /* Enable [R/W] */
  49 #define NILE4_INTCLR    0x00A0  /* Interrupt Clear [R/W] */
  50 #define NILE4_INTPPES   0x00A8  /* PCI Interrupt Control [R/W] */
  51
  52
  53     /*
  54      *  Memory-Interface Registers
  55      */
  56
  57 #define NILE4_MEMCTRL   0x00C0  /* Memory Control */
  58 #define NILE4_ACSTIME   0x00C8  /* Memory Access Timing [R/W] */
  59 #define NILE4_CHKERR    0x00D0  /* Memory Check Error Status [R] */
  60
  61
  62     /*
  63      *  PCI-Bus Registers
  64      */
  65
  66 #define NILE4_PCICTRL   0x00E0  /* PCI Control [R/W] */
  67 #define NILE4_PCIARB    0x00E8  /* PCI Arbiter [R/W] */
  68 #define NILE4_PCIINIT0  0x00F0  /* PCI Master (Initiator) 0 [R/W] */
  69 #define NILE4_PCIINIT1  0x00F8  /* PCI Master (Initiator) 1 [R/W] */
  70 #define NILE4_PCIERR    0x00B8  /* PCI Error [R/W] */
  71
  72
  73     /*
  74      *  Local-Bus Registers
  75      */
  76
  77 #define NILE4_LCNFG     0x0100  /* Local Bus Configuration [R/W] */
  78 #define NILE4_LCST2     0x0110  /* Local Bus Chip-Select Timing 2 [R/W] */
  79 #define NILE4_LCST3     0x0118  /* Local Bus Chip-Select Timing 3 [R/W] */
  80 #define NILE4_LCST4     0x0120  /* Local Bus Chip-Select Timing 4 [R/W] */
  81 #define NILE4_LCST5     0x0128  /* Local Bus Chip-Select Timing 5 [R/W] */
  82 #define NILE4_LCST6     0x0130  /* Local Bus Chip-Select Timing 6 [R/W] */
  83 #define NILE4_LCST7     0x0138  /* Local Bus Chip-Select Timing 7 [R/W] */
  84 #define NILE4_LCST8     0x0140  /* Local Bus Chip-Select Timing 8 [R/W] */
  85 #define NILE4_DCSFN     0x0150  /* Device Chip-Select Muxing and Output */
  86                                 /* Enables [R/W] */
  87 #define NILE4_DCSIO     0x0158  /* Device Chip-Selects As I/O Bits [R/W] */
  88 #define NILE4_BCST      0x0178  /* Local Boot Chip-Select Timing [R/W] */
  89
  90
  91     /*
  92      *  DMA Registers
  93      */
  94
  95 #define NILE4_DMACTRL0  0x0180  /* DMA Control 0 [R/W] */
  96 #define NILE4_DMASRCA0  0x0188  /* DMA Source Address 0 [R/W] */
  97 #define NILE4_DMADESA0  0x0190  /* DMA Destination Address 0 [R/W] */
  98 #define NILE4_DMACTRL1  0x0198  /* DMA Control 1 [R/W] */
  99 #define NILE4_DMASRCA1  0x01A0  /* DMA Source Address 1 [R/W] */
 100 #define NILE4_DMADESA1  0x01A8  /* DMA Destination Address 1 [R/W] */
 101
 102
 103     /*
 104      *  Timer Registers
 105      */
 106
 107 #define NILE4_T0CTRL    0x01C0  /* SDRAM Refresh Control [R/W] */
 108 #define NILE4_T0CNTR    0x01C8  /* SDRAM Refresh Counter [R/W] */
 109 #define NILE4_T1CTRL    0x01D0  /* CPU-Bus Read Time-Out Control [R/W] */
 110 #define NILE4_T1CNTR    0x01D8  /* CPU-Bus Read Time-Out Counter [R/W] */
 111 #define NILE4_T2CTRL    0x01E0  /* General-Purpose Timer Control [R/W] */
 112 #define NILE4_T2CNTR    0x01E8  /* General-Purpose Timer Counter [R/W] */
 113 #define NILE4_T3CTRL    0x01F0  /* Watchdog Timer Control [R/W] */
 114 #define NILE4_T3CNTR    0x01F8  /* Watchdog Timer Counter [R/W] */
 115
 116
 117     /*
 118      *  PCI Configuration Space Registers
 119      */
 120
 121 #define NILE4_PCI_BASE  0x0200
 122
 123 #define NILE4_VID       0x0200  /* PCI Vendor ID [R] */
 124 #define NILE4_DID       0x0202  /* PCI Device ID [R] */
 125 #define NILE4_PCICMD    0x0204  /* PCI Command [R/W] */
 126 #define NILE4_PCISTS    0x0206  /* PCI Status [R/W] */
 127 #define NILE4_REVID     0x0208  /* PCI Revision ID [R] */
 128 #define NILE4_CLASS     0x0209  /* PCI Class Code [R] */
 129 #define NILE4_CLSIZ     0x020C  /* PCI Cache Line Size [R/W] */
 130 #define NILE4_MLTIM     0x020D  /* PCI Latency Timer [R/W] */
 131 #define NILE4_HTYPE     0x020E  /* PCI Header Type [R] */
 132 #define NILE4_BIST      0x020F  /* BIST [R] (unimplemented) */
 133 #define NILE4_BARC      0x0210  /* PCI Base Address Register Control [R/W] */
 134 #define NILE4_BAR0      0x0218  /* PCI Base Address Register 0 [R/W] */
 135 #define NILE4_BAR1      0x0220  /* PCI Base Address Register 1 [R/W] */
 136 #define NILE4_CIS       0x0228  /* PCI Cardbus CIS Pointer [R] */
 137                                 /* (unimplemented) */
 138 #define NILE4_SSVID     0x022C  /* PCI Sub-System Vendor ID [R/W] */
 139 #define NILE4_SSID      0x022E  /* PCI Sub-System ID [R/W] */
 140 #define NILE4_ROM       0x0230  /* Expansion ROM Base Address [R] */
 141                                 /* (unimplemented) */
 142 #define NILE4_INTLIN    0x023C  /* PCI Interrupt Line [R/W] */
 143 #define NILE4_INTPIN    0x023D  /* PCI Interrupt Pin [R] */
 144 #define NILE4_MINGNT    0x023E  /* PCI Min_Gnt [R] (unimplemented) */
 145 #define NILE4_MAXLAT    0x023F  /* PCI Max_Lat [R] (unimplemented) */
 146 #define NILE4_BAR2      0x0240  /* PCI Base Address Register 2 [R/W] */
 147 #define NILE4_BAR3      0x0248  /* PCI Base Address Register 3 [R/W] */
 148 #define NILE4_BAR4      0x0250  /* PCI Base Address Register 4 [R/W] */
 149 #define NILE4_BAR5      0x0258  /* PCI Base Address Register 5 [R/W] */
 150 #define NILE4_BAR6      0x0260  /* PCI Base Address Register 6 [R/W] */
 151 #define NILE4_BAR7      0x0268  /* PCI Base Address Register 7 [R/W] */
 152 #define NILE4_BAR8      0x0270  /* PCI Base Address Register 8 [R/W] */
 153 #define NILE4_BARB      0x0278  /* PCI Base Address Register BOOT [R/W] */
 154
 155
 156     /*
 157      *  Serial-Port Registers
 158      */
 159
 160 #define NILE4_UART_BASE 0x0300
 161
 162 #define NILE4_UARTRBR   0x0300  /* UART Receiver Data Buffer [R] */
 163 #define NILE4_UARTTHR   0x0300  /* UART Transmitter Data Holding [W] */
 164 #define NILE4_UARTIER   0x0308  /* UART Interrupt Enable [R/W] */
 165 #define NILE4_UARTDLL   0x0300  /* UART Divisor Latch LSB [R/W] */
 166 #define NILE4_UARTDLM   0x0308  /* UART Divisor Latch MSB [R/W] */
 167 #define NILE4_UARTIIR   0x0310  /* UART Interrupt ID [R] */
 168 #define NILE4_UARTFCR   0x0310  /* UART FIFO Control [W] */
 169 #define NILE4_UARTLCR   0x0318  /* UART Line Control [R/W] */
 170 #define NILE4_UARTMCR   0x0320  /* UART Modem Control [R/W] */
 171 #define NILE4_UARTLSR   0x0328  /* UART Line Status [R/W] */
 172 #define NILE4_UARTMSR   0x0330  /* UART Modem Status [R/W] */
 173 #define NILE4_UARTSCR   0x0338  /* UART Scratch [R/W] */
 174
 175 #define NILE4_UART_BASE_BAUD    520833  /* 100 MHz / 12 / 16 */
 176
 177
 178     /*
 179      *  Interrupt Lines
 180      */
 181
 182 #define NILE4_INT_CPCE  0       /* CPU-Interface Parity-Error Interrupt */
 183 #define NILE4_INT_CNTD  1       /* CPU No-Target Decode Interrupt */
 184 #define NILE4_INT_MCE   2       /* Memory-Check Error Interrupt */
 185 #define NILE4_INT_DMA   3       /* DMA Controller Interrupt */
 186 #define NILE4_INT_UART  4       /* UART Interrupt */
 187 #define NILE4_INT_WDOG  5       /* Watchdog Timer Interrupt */
 188 #define NILE4_INT_GPT   6       /* General-Purpose Timer Interrupt */
 189 #define NILE4_INT_LBRTD 7       /* Local-Bus Ready Timer Interrupt */
 190 #define NILE4_INT_INTA  8       /* PCI Interrupt Signal INTA# */
 191 #define NILE4_INT_INTB  9       /* PCI Interrupt Signal INTB# */
 192 #define NILE4_INT_INTC  10      /* PCI Interrupt Signal INTC# */
 193 #define NILE4_INT_INTD  11      /* PCI Interrupt Signal INTD# */
 194 #define NILE4_INT_INTE  12      /* PCI Interrupt Signal INTE# (ISA cascade) */
 195 #define NILE4_INT_RESV  13      /* Reserved */
 196 #define NILE4_INT_PCIS  14      /* PCI SERR# Interrupt */
 197 #define NILE4_INT_PCIE  15      /* PCI Internal Error Interrupt */
 198
 199
 200     /*
 201      *  Nile 4 Register Access
 202      */
 203
 204 static inline void nile4_sync(void)
 205 {
 206     volatile u32 *p = (volatile u32 *)0xbfc00000;
 207     (void)(*p);
 208 }
 209
 210 static inline void nile4_out32(u32 offset, u32 val)
 211 {
 212     *(volatile u32 *)(NILE4_BASE+offset) = val;
 213     nile4_sync();
 214 }
 215
 216 static inline u32 nile4_in32(u32 offset)
 217 {
 218     u32 val = *(volatile u32 *)(NILE4_BASE+offset);
 219     nile4_sync();
 220     return val;
 221 }
 222
 223 static inline void nile4_out16(u32 offset, u16 val)
 224 {
 225     *(volatile u16 *)(NILE4_BASE+offset) = val;
 226     nile4_sync();
 227 }
 228
 229 static inline u16 nile4_in16(u32 offset)
 230 {
 231     u16 val = *(volatile u16 *)(NILE4_BASE+offset);
 232     nile4_sync();
 233     return val;
 234 }
 235
 236 static inline void nile4_out8(u32 offset, u8 val)
 237 {
 238     *(volatile u8 *)(NILE4_BASE+offset) = val;
 239     nile4_sync();
 240 }
 241
 242 static inline u8 nile4_in8(u32 offset)
 243 {
 244     u8 val = *(volatile u8 *)(NILE4_BASE+offset);
 245     nile4_sync();
 246     return val;
 247 }
 248
 249
 250     /*
 251      *  Physical Device Address Registers
 252      */
 253
 254 extern void nile4_set_pdar(u32 pdar, u32 phys, u32 size, int width,
 255                            int on_memory_bus, int visible);
 256
 257
 258     /*
 259      *  PCI Master Registers
 260      */
 261
 262 #define NILE4_PCICMD_IACK       0       /* PCI Interrupt Acknowledge */
 263 #define NILE4_PCICMD_IO         1       /* PCI I/O Space */
 264 #define NILE4_PCICMD_MEM        3       /* PCI Memory Space */
 265 #define NILE4_PCICMD_CFG        5       /* PCI Configuration Space */
 266
 267
 268     /*
 269      *  PCI Address Spaces
 270      *
 271      *  Note that these are multiplexed using PCIINIT[01]!
 272      */
 273
 274 #define NILE4_PCI_IO_BASE       0xa6000000
 275 #define NILE4_PCI_MEM_BASE      0xa8000000
 276 #define NILE4_PCI_CFG_BASE      NILE4_PCI_MEM_BASE
 277 #define NILE4_PCI_IACK_BASE     NILE4_PCI_IO_BASE
 278
 279
 280 extern void nile4_set_pmr(u32 pmr, u32 type, u32 addr);
 281
 282
 283     /*
 284      *  Interrupt Programming
 285      */
 286
 287 #define NUM_I8259_INTERRUPTS    16
 288 #define NUM_NILE4_INTERRUPTS    16
 289
 290 #define IRQ_I8259_CASCADE       NILE4_INT_INTE
 291 #define is_i8259_irq(irq)       ((irq) < NUM_I8259_INTERRUPTS)
 292 #define nile4_to_irq(n)         ((n)+NUM_I8259_INTERRUPTS)
 293 #define irq_to_nile4(n)         ((n)-NUM_I8259_INTERRUPTS)
 294
 295 extern void nile4_map_irq(int nile4_irq, int cpu_irq);
 296 extern void nile4_map_irq_all(int cpu_irq);
 297 extern void nile4_enable_irq(unsigned int nile4_irq);
 298 extern void nile4_disable_irq(unsigned int nile4_irq);
 299 extern void nile4_disable_irq_all(void);
 300 extern u16 nile4_get_irq_stat(int cpu_irq);
 301 extern void nile4_enable_irq_output(int cpu_irq);
 302 extern void nile4_disable_irq_output(int cpu_irq);
 303 extern void nile4_set_pci_irq_polarity(int pci_irq, int high);
 304 extern void nile4_set_pci_irq_level_or_edge(int pci_irq, int level);
 305 extern void nile4_clear_irq(int nile4_irq);
 306 extern void nile4_clear_irq_mask(u32 mask);
 307 extern u8 nile4_i8259_iack(void);
 308 extern void nile4_dump_irq_status(void);        /* Debug */
 309
 310 #endif