package/linux/kernel-source/include/sbextif.h

   1 /*
   2  * Hardware-specific External Interface I/O core definitions
   3  * for the BCM47xx family of SiliconBackplane-based chips.
   4  *
   5  * The External Interface core supports a total of three external chip selects
   6  * supporting external interfaces. One of the external chip selects is
   7  * used for Flash, one is used for PCMCIA, and the other may be
   8  * programmed to support either a synchronous interface or an
   9  * asynchronous interface. The asynchronous interface can be used to
  10  * support external devices such as UARTs and the BCM2019 Bluetooth
  11  * baseband processor.
  12  * The external interface core also contains 2 on-chip 16550 UARTs, clock
  13  * frequency control, a watchdog interrupt timer, and a GPIO interface.
  14  *
  15  * Copyright 2004, Broadcom Corporation
  16  * All Rights Reserved.
  17  *
  18  * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
  19  * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
  20  * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
  21  * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
  22  * $Id$
  23  */
  24
  25 #ifndef _SBEXTIF_H
  26 #define _SBEXTIF_H
  27
  28 /* external interface address space */
  29 #define EXTIF_PCMCIA_MEMBASE(x) (x)
  30 #define EXTIF_PCMCIA_IOBASE(x)  ((x) + 0x100000)
  31 #define EXTIF_PCMCIA_CFGBASE(x) ((x) + 0x200000)
  32 #define EXTIF_CFGIF_BASE(x)     ((x) + 0x800000)
  33 #define EXTIF_FLASH_BASE(x)     ((x) + 0xc00000)
  34
  35 /* cpp contortions to concatenate w/arg prescan */
  36 #ifndef PAD
  37 #define _PADLINE(line)  pad ## line
  38 #define _XSTR(line)     _PADLINE(line)
  39 #define PAD             _XSTR(__LINE__)
  40 #endif  /* PAD */
  41
  42 /*
  43  * The multiple instances of output and output enable registers
  44  * are present to allow driver software for multiple cores to control
  45  * gpio outputs without needing to share a single register pair.
  46  */
  47 struct gpiouser {
  48         uint32  out;
  49         uint32  outen;
  50 };
  51 #define NGPIOUSER       5
  52
  53 typedef volatile struct {
  54         uint32  corecontrol;
  55         uint32  extstatus;
  56         uint32  PAD[2];
  57
  58         /* pcmcia control registers */
  59         uint32  pcmcia_config;
  60         uint32  pcmcia_memwait;
  61         uint32  pcmcia_attrwait;
  62         uint32  pcmcia_iowait;
  63
  64         /* programmable interface control registers */
  65         uint32  prog_config;
  66         uint32  prog_waitcount;
  67
  68         /* flash control registers */
  69         uint32  flash_config;
  70         uint32  flash_waitcount;
  71         uint32  PAD[4];
  72
  73         uint32  watchdog;
  74
  75         /* clock control */
  76         uint32  clockcontrol_n;
  77         uint32  clockcontrol_sb;
  78         uint32  clockcontrol_pci;
  79         uint32  clockcontrol_mii;
  80         uint32  PAD[3];
  81
  82         /* gpio */
  83         uint32  gpioin;
  84         struct gpiouser gpio[NGPIOUSER];
  85         uint32  PAD;
  86         uint32  ejtagouten;
  87         uint32  gpiointpolarity;
  88         uint32  gpiointmask;
  89         uint32  PAD[153];
  90
  91         uint8   uartdata;
  92         uint8   PAD[3];
  93         uint8   uartimer;
  94         uint8   PAD[3];
  95         uint8   uartfcr;
  96         uint8   PAD[3];
  97         uint8   uartlcr;
  98         uint8   PAD[3];
  99         uint8   uartmcr;
 100         uint8   PAD[3];
 101         uint8   uartlsr;
 102         uint8   PAD[3];
 103         uint8   uartmsr;
 104         uint8   PAD[3];
 105         uint8   uartscratch;
 106         uint8   PAD[3];
 107 } extifregs_t;
 108
 109 /* corecontrol */
 110 #define CC_UE           (1 << 0)                /* uart enable */
 111
 112 /* extstatus */
 113 #define ES_EM           (1 << 0)                /* endian mode (ro) */
 114 #define ES_EI           (1 << 1)                /* external interrupt pin (ro) */
 115 #define ES_GI           (1 << 2)                /* gpio interrupt pin (ro) */
 116
 117 /* gpio bit mask */
 118 #define GPIO_BIT0       (1 << 0)
 119 #define GPIO_BIT1       (1 << 1)
 120 #define GPIO_BIT2       (1 << 2)
 121 #define GPIO_BIT3       (1 << 3)
 122 #define GPIO_BIT4       (1 << 4)
 123 #define GPIO_BIT5       (1 << 5)
 124 #define GPIO_BIT6       (1 << 6)
 125 #define GPIO_BIT7       (1 << 7)
 126
 127
 128 /* pcmcia/prog/flash_config */
 129 #define CF_EN           (1 << 0)                /* enable */
 130 #define CF_EM_MASK      0xe                     /* mode */
 131 #define CF_EM_SHIFT     1
 132 #define CF_EM_FLASH     0x0                     /* flash/asynchronous mode */
 133 #define CF_EM_SYNC      0x2                     /* synchronous mode */
 134 #define CF_EM_PCMCIA    0x4                     /* pcmcia mode */
 135 #define CF_DS           (1 << 4)                /* destsize:  0=8bit, 1=16bit */
 136 #define CF_BS           (1 << 5)                /* byteswap */
 137 #define CF_CD_MASK      0xc0                    /* clock divider */
 138 #define CF_CD_SHIFT     6
 139 #define CF_CD_DIV2      0x0                     /* backplane/2 */
 140 #define CF_CD_DIV3      0x40                    /* backplane/3 */
 141 #define CF_CD_DIV4      0x80                    /* backplane/4 */
 142 #define CF_CE           (1 << 8)                /* clock enable */
 143 #define CF_SB           (1 << 9)                /* size/bytestrobe (synch only) */
 144
 145 /* pcmcia_memwait */
 146 #define PM_W0_MASK      0x3f                    /* waitcount0 */
 147 #define PM_W1_MASK      0x1f00                  /* waitcount1 */
 148 #define PM_W1_SHIFT     8
 149 #define PM_W2_MASK      0x1f0000                /* waitcount2 */
 150 #define PM_W2_SHIFT     16
 151 #define PM_W3_MASK      0x1f000000              /* waitcount3 */
 152 #define PM_W3_SHIFT     24
 153
 154 /* pcmcia_attrwait */
 155 #define PA_W0_MASK      0x3f                    /* waitcount0 */
 156 #define PA_W1_MASK      0x1f00                  /* waitcount1 */
 157 #define PA_W1_SHIFT     8
 158 #define PA_W2_MASK      0x1f0000                /* waitcount2 */
 159 #define PA_W2_SHIFT     16
 160 #define PA_W3_MASK      0x1f000000              /* waitcount3 */
 161 #define PA_W3_SHIFT     24
 162
 163 /* pcmcia_iowait */
 164 #define PI_W0_MASK      0x3f                    /* waitcount0 */
 165 #define PI_W1_MASK      0x1f00                  /* waitcount1 */
 166 #define PI_W1_SHIFT     8
 167 #define PI_W2_MASK      0x1f0000                /* waitcount2 */
 168 #define PI_W2_SHIFT     16
 169 #define PI_W3_MASK      0x1f000000              /* waitcount3 */
 170 #define PI_W3_SHIFT     24
 171
 172 /* prog_waitcount */
 173 #define PW_W0_MASK      0x0000001f                      /* waitcount0 */
 174 #define PW_W1_MASK      0x00001f00                      /* waitcount1 */
 175 #define PW_W1_SHIFT     8
 176 #define PW_W2_MASK      0x001f0000              /* waitcount2 */
 177 #define PW_W2_SHIFT     16
 178 #define PW_W3_MASK      0x1f000000              /* waitcount3 */
 179 #define PW_W3_SHIFT     24
 180
 181 #define PW_W0       0x0000000c
 182 #define PW_W1       0x00000a00
 183 #define PW_W2       0x00020000
 184 #define PW_W3       0x01000000
 185
 186 /* flash_waitcount */
 187 #define FW_W0_MASK      0x1f                    /* waitcount0 */
 188 #define FW_W1_MASK      0x1f00                  /* waitcount1 */
 189 #define FW_W1_SHIFT     8
 190 #define FW_W2_MASK      0x1f0000                /* waitcount2 */
 191 #define FW_W2_SHIFT     16
 192 #define FW_W3_MASK      0x1f000000              /* waitcount3 */
 193 #define FW_W3_SHIFT     24
 194
 195 /* watchdog */
 196 #define WATCHDOG_CLOCK  48000000                /* Hz */
 197
 198 /* clockcontrol_n */
 199 #define CN_N1_MASK      0x3f                    /* n1 control */
 200 #define CN_N2_MASK      0x3f00                  /* n2 control */
 201 #define CN_N2_SHIFT     8
 202
 203 /* clockcontrol_sb/pci/mii */
 204 #define CC_M1_MASK      0x3f                    /* m1 control */
 205 #define CC_M2_MASK      0x3f00                  /* m2 control */
 206 #define CC_M2_SHIFT     8
 207 #define CC_M3_MASK      0x3f0000                /* m3 control */
 208 #define CC_M3_SHIFT     16
 209 #define CC_MC_MASK      0x1f000000              /* mux control */
 210 #define CC_MC_SHIFT     24
 211
 212 /* Clock control default values */
 213 #define CC_DEF_N        0x0009                  /* Default values for bcm4710 */
 214 #define CC_DEF_100      0x04020011
 215 #define CC_DEF_33       0x11030011
 216 #define CC_DEF_25       0x11050011
 217
 218 /* Clock control values for 125Mhz */
 219 #define CC_125_N        0x0802
 220 #define CC_125_M        0x04020009
 221 #define CC_125_M25      0x11090009
 222 #define CC_125_M33      0x11090005
 223
 224 /* Clock control magic field values */
 225 #define CC_F6_2         0x02                    /* A factor of 2 in */
 226 #define CC_F6_3         0x03                    /*  6-bit fields like */
 227 #define CC_F6_4         0x05                    /*  N1, M1 or M3 */
 228 #define CC_F6_5         0x09
 229 #define CC_F6_6         0x11
 230 #define CC_F6_7         0x21
 231
 232 #define CC_F5_BIAS      5                       /* 5-bit fields get this added */
 233
 234 #define CC_MC_BYPASS    0x08
 235 #define CC_MC_M1        0x04
 236 #define CC_MC_M1M2      0x02
 237 #define CC_MC_M1M2M3    0x01
 238 #define CC_MC_M1M3      0x11
 239
 240 #define CC_CLOCK_BASE   24000000        /* Half the clock freq. in the 4710 */
 241
 242 #endif  /* _SBEXTIF_H */