drivers/serial/sh-sci.h

   1 /* $Id: sh-sci.h,v 1.4 2004/02/19 16:43:56 lethal Exp $
   2  *
   3  *  linux/drivers/serial/sh-sci.h
   4  *
   5  *  SuperH on-chip serial module support.  (SCI with no FIFO / with FIFO)
   6  *  Copyright (C) 1999, 2000  Niibe Yutaka
   7  *  Copyright (C) 2000  Greg Banks
   8  *  Copyright (C) 2002, 2003  Paul Mundt
   9  *  Modified to support multiple serial ports. Stuart Menefy (May 2000).
  10  *  Modified to support SH7300(SH-Mobile) SCIF. Takashi Kusuda (Jun 2003).
  11  *  Modified to support H8/300 Series Yoshinori Sato (Feb 2004).
  12  *  Removed SH7300 support (Jul 2007).
  13  *  Modified to support SH7720 SCIF. Markus Brunner, Mark Jonas (Aug 2007).
  14  */
  15 #include <linux/serial_core.h>
  16 #include <asm/io.h>
  17
  18 #include <asm/gpio.h>
  19
  20 #if defined(CONFIG_H83007) || defined(CONFIG_H83068)
  21 #include <asm/regs306x.h>
  22 #endif
  23 #if defined(CONFIG_H8S2678)
  24 #include <asm/regs267x.h>
  25 #endif
  26
  27 #if defined(CONFIG_CPU_SUBTYPE_SH7706) || \
  28     defined(CONFIG_CPU_SUBTYPE_SH7707) || \
  29     defined(CONFIG_CPU_SUBTYPE_SH7708) || \
  30     defined(CONFIG_CPU_SUBTYPE_SH7709)
  31 # define SCPCR  0xA4000116 /* 16 bit SCI and SCIF */
  32 # define SCPDR  0xA4000136 /* 8  bit SCI and SCIF */
  33 # define SCSCR_INIT(port)          0x30 /* TIE=0,RIE=0,TE=1,RE=1 */
  34 # define SCI_AND_SCIF
  35 #elif defined(CONFIG_CPU_SUBTYPE_SH7705)
  36 # define SCIF0          0xA4400000
  37 # define SCIF2          0xA4410000
  38 # define SCSMR_Ir       0xA44A0000
  39 # define IRDA_SCIF      SCIF0
  40 # define SCPCR 0xA4000116
  41 # define SCPDR 0xA4000136
  42
  43 /* Set the clock source,
  44  * SCIF2 (0xA4410000) -> External clock, SCK pin used as clock input
  45  * SCIF0 (0xA4400000) -> Internal clock, SCK pin as serial clock output
  46  */
  47 # define SCSCR_INIT(port) (port->mapbase == SCIF2) ? 0xF3 : 0xF0
  48 # define SCIF_ONLY
  49 #elif defined(CONFIG_CPU_SUBTYPE_SH7720)
  50 # define SCSCR_INIT(port)  0x0030 /* TIE=0,RIE=0,TE=1,RE=1 */
  51 # define SCIF_ONLY
  52 #define SCIF_ORER    0x0200   /* overrun error bit */
  53 #elif defined(CONFIG_SH_RTS7751R2D)
  54 # define SCSPTR2 0xFFE80020 /* 16 bit SCIF */
  55 # define SCIF_ORER 0x0001   /* overrun error bit */
  56 # define SCSCR_INIT(port) 0x3a /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
  57 # define SCIF_ONLY
  58 #elif defined(CONFIG_CPU_SUBTYPE_SH7750)  || \
  59       defined(CONFIG_CPU_SUBTYPE_SH7750R) || \
  60       defined(CONFIG_CPU_SUBTYPE_SH7750S) || \
  61       defined(CONFIG_CPU_SUBTYPE_SH7091)  || \
  62       defined(CONFIG_CPU_SUBTYPE_SH7751)  || \
  63       defined(CONFIG_CPU_SUBTYPE_SH7751R)
  64 # define SCSPTR1 0xffe0001c /* 8  bit SCI */
  65 # define SCSPTR2 0xFFE80020 /* 16 bit SCIF */
  66 # define SCIF_ORER 0x0001   /* overrun error bit */
  67 # define SCSCR_INIT(port) (((port)->type == PORT_SCI) ? \
  68         0x30 /* TIE=0,RIE=0,TE=1,RE=1 */ : \
  69         0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */ )
  70 # define SCI_AND_SCIF
  71 #elif defined(CONFIG_CPU_SUBTYPE_SH7760)
  72 # define SCSPTR0 0xfe600024 /* 16 bit SCIF */
  73 # define SCSPTR1 0xfe610024 /* 16 bit SCIF */
  74 # define SCSPTR2 0xfe620024 /* 16 bit SCIF */
  75 # define SCIF_ORER 0x0001  /* overrun error bit */
  76 # define SCSCR_INIT(port)          0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
  77 # define SCIF_ONLY
  78 #elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
  79 # define SCSPTR0 0xA4400000       /* 16 bit SCIF */
  80 # define SCIF_ORER 0x0001   /* overrun error bit */
  81 # define PACR 0xa4050100
  82 # define PBCR 0xa4050102
  83 # define SCSCR_INIT(port)          0x3B
  84 # define SCIF_ONLY
  85 #elif defined(CONFIG_CPU_SUBTYPE_SH7343)
  86 # define SCSPTR0 0xffe00010     /* 16 bit SCIF */
  87 # define SCSPTR1 0xffe10010     /* 16 bit SCIF */
  88 # define SCSPTR2 0xffe20010     /* 16 bit SCIF */
  89 # define SCSPTR3 0xffe30010     /* 16 bit SCIF */
  90 # define SCSCR_INIT(port) 0x32  /* TIE=0,RIE=0,TE=1,RE=1,REIE=0,CKE=1 */
  91 # define SCIF_ONLY
  92 #elif defined(CONFIG_CPU_SUBTYPE_SH7722)
  93 # define SCPDR0                 0xA405013E      /* 16 bit SCIF0 PSDR */
  94 # define SCSPTR0                SCPDR0
  95 # define SCIF_ORER              0x0001  /* overrun error bit */
  96 # define SCSCR_INIT(port)       0x0038  /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
  97 # define SCIF_ONLY
  98 # define PORT_PSCR              0xA405011E
  99 #elif defined(CONFIG_CPU_SUBTYPE_SH4_202)
 100 # define SCSPTR2 0xffe80020 /* 16 bit SCIF */
 101 # define SCIF_ORER 0x0001   /* overrun error bit */
 102 # define SCSCR_INIT(port) 0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
 103 # define SCIF_ONLY
 104 #elif defined(CONFIG_CPU_SUBTYPE_SH5_101) || defined(CONFIG_CPU_SUBTYPE_SH5_103)
 105 # include <asm/hardware.h>
 106 # define SCIF_BASE_ADDR    0x01030000
 107 # define SCIF_ADDR_SH5     PHYS_PERIPHERAL_BLOCK+SCIF_BASE_ADDR
 108 # define SCIF_PTR2_OFFS    0x0000020
 109 # define SCIF_LSR2_OFFS    0x0000024
 110 # define SCSPTR2           ((port->mapbase)+SCIF_PTR2_OFFS) /* 16 bit SCIF */
 111 # define SCLSR2            ((port->mapbase)+SCIF_LSR2_OFFS) /* 16 bit SCIF */
 112 # define SCSCR_INIT(port)  0x38         /* TIE=0,RIE=0, TE=1,RE=1,REIE=1 */
 113 # define SCIF_ONLY
 114 #elif defined(CONFIG_H83007) || defined(CONFIG_H83068)
 115 # define SCSCR_INIT(port)          0x30 /* TIE=0,RIE=0,TE=1,RE=1 */
 116 # define SCI_ONLY
 117 # define H8300_SCI_DR(ch) *(volatile char *)(P1DR + h8300_sci_pins[ch].port)
 118 #elif defined(CONFIG_H8S2678)
 119 # define SCSCR_INIT(port)          0x30 /* TIE=0,RIE=0,TE=1,RE=1 */
 120 # define SCI_ONLY
 121 # define H8300_SCI_DR(ch) *(volatile char *)(P1DR + h8300_sci_pins[ch].port)
 122 #elif defined(CONFIG_CPU_SUBTYPE_SH7770)
 123 # define SCSPTR0 0xff923020 /* 16 bit SCIF */
 124 # define SCSPTR1 0xff924020 /* 16 bit SCIF */
 125 # define SCSPTR2 0xff925020 /* 16 bit SCIF */
 126 # define SCIF_ORER 0x0001  /* overrun error bit */
 127 # define SCSCR_INIT(port)       0x3c /* TIE=0,RIE=0,TE=1,RE=1,REIE=1,cke=2 */
 128 # define SCIF_ONLY
 129 #elif defined(CONFIG_CPU_SUBTYPE_SH7780)
 130 # define SCSPTR0        0xffe00024      /* 16 bit SCIF */
 131 # define SCSPTR1        0xffe10024      /* 16 bit SCIF */
 132 # define SCIF_ORER      0x0001          /* Overrun error bit */
 133 # define SCSCR_INIT(port)       0x3a    /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
 134 # define SCIF_ONLY
 135 #elif defined(CONFIG_CPU_SUBTYPE_SH7785)
 136 # define SCSPTR0        0xffea0024      /* 16 bit SCIF */
 137 # define SCSPTR1        0xffeb0024      /* 16 bit SCIF */
 138 # define SCSPTR2        0xffec0024      /* 16 bit SCIF */
 139 # define SCSPTR3        0xffed0024      /* 16 bit SCIF */
 140 # define SCSPTR4        0xffee0024      /* 16 bit SCIF */
 141 # define SCSPTR5        0xffef0024      /* 16 bit SCIF */
 142 # define SCIF_OPER      0x0001          /* Overrun error bit */
 143 # define SCSCR_INIT(port)       0x3a    /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
 144 # define SCIF_ONLY
 145 #elif defined(CONFIG_CPU_SUBTYPE_SH7203) || \
 146       defined(CONFIG_CPU_SUBTYPE_SH7206)
 147 # define SCSPTR0 0xfffe8020 /* 16 bit SCIF */
 148 # define SCSPTR1 0xfffe8820 /* 16 bit SCIF */
 149 # define SCSPTR2 0xfffe9020 /* 16 bit SCIF */
 150 # define SCSPTR3 0xfffe9820 /* 16 bit SCIF */
 151 # define SCSCR_INIT(port)       0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
 152 # define SCIF_ONLY
 153 #elif defined(CONFIG_CPU_SUBTYPE_SH7619)
 154 # define SCSPTR0 0xf8400020 /* 16 bit SCIF */
 155 # define SCSPTR1 0xf8410020 /* 16 bit SCIF */
 156 # define SCSPTR2 0xf8420020 /* 16 bit SCIF */
 157 # define SCIF_ORER 0x0001  /* overrun error bit */
 158 # define SCSCR_INIT(port)       0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
 159 # define SCIF_ONLY
 160 #elif defined(CONFIG_CPU_SUBTYPE_SHX3)
 161 # define SCSPTR0 0xffc30020             /* 16 bit SCIF */
 162 # define SCSPTR1 0xffc40020             /* 16 bit SCIF */
 163 # define SCSPTR2 0xffc50020             /* 16 bit SCIF */
 164 # define SCSPTR3 0xffc60020             /* 16 bit SCIF */
 165 # define SCIF_ORER 0x0001               /* Overrun error bit */
 166 # define SCSCR_INIT(port)       0x38    /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
 167 # define SCIF_ONLY
 168 #else
 169 # error CPU subtype not defined
 170 #endif
 171
 172 /* SCSCR */
 173 #define SCI_CTRL_FLAGS_TIE  0x80 /* all */
 174 #define SCI_CTRL_FLAGS_RIE  0x40 /* all */
 175 #define SCI_CTRL_FLAGS_TE   0x20 /* all */
 176 #define SCI_CTRL_FLAGS_RE   0x10 /* all */
 177 #if defined(CONFIG_CPU_SUBTYPE_SH7750)  || \
 178     defined(CONFIG_CPU_SUBTYPE_SH7091)  || \
 179     defined(CONFIG_CPU_SUBTYPE_SH7750R) || \
 180     defined(CONFIG_CPU_SUBTYPE_SH7750S) || \
 181     defined(CONFIG_CPU_SUBTYPE_SH7751)  || \
 182     defined(CONFIG_CPU_SUBTYPE_SH7751R) || \
 183     defined(CONFIG_CPU_SUBTYPE_SH7780)  || \
 184     defined(CONFIG_CPU_SUBTYPE_SH7785)  || \
 185     defined(CONFIG_CPU_SUBTYPE_SHX3)
 186 #define SCI_CTRL_FLAGS_REIE 0x08 /* 7750 SCIF */
 187 #else
 188 #define SCI_CTRL_FLAGS_REIE 0
 189 #endif
 190 /*      SCI_CTRL_FLAGS_MPIE 0x08  * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
 191 /*      SCI_CTRL_FLAGS_TEIE 0x04  * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
 192 /*      SCI_CTRL_FLAGS_CKE1 0x02  * all */
 193 /*      SCI_CTRL_FLAGS_CKE0 0x01  * 7707 SCI/SCIF, 7708 SCI, 7709 SCI/SCIF, 7750 SCI */
 194
 195 /* SCxSR SCI */
 196 #define SCI_TDRE  0x80 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
 197 #define SCI_RDRF  0x40 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
 198 #define SCI_ORER  0x20 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
 199 #define SCI_FER   0x10 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
 200 #define SCI_PER   0x08 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
 201 #define SCI_TEND  0x04 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
 202 /*      SCI_MPB   0x02  * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
 203 /*      SCI_MPBT  0x01  * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
 204
 205 #define SCI_ERRORS ( SCI_PER | SCI_FER | SCI_ORER)
 206
 207 /* SCxSR SCIF */
 208 #define SCIF_ER    0x0080 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
 209 #define SCIF_TEND  0x0040 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
 210 #define SCIF_TDFE  0x0020 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
 211 #define SCIF_BRK   0x0010 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
 212 #define SCIF_FER   0x0008 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
 213 #define SCIF_PER   0x0004 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
 214 #define SCIF_RDF   0x0002 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
 215 #define SCIF_DR    0x0001 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
 216
 217 #if defined(CONFIG_CPU_SUBTYPE_SH7705) || \
 218     defined(CONFIG_CPU_SUBTYPE_SH7720)
 219 #define SCIF_ORER    0x0200
 220 #define SCIF_ERRORS ( SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK | SCIF_ORER)
 221 #define SCIF_RFDC_MASK 0x007f
 222 #define SCIF_TXROOM_MAX 64
 223 #else
 224 #define SCIF_ERRORS ( SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK)
 225 #define SCIF_RFDC_MASK 0x001f
 226 #define SCIF_TXROOM_MAX 16
 227 #endif
 228
 229 #if defined(SCI_ONLY)
 230 # define SCxSR_TEND(port)               SCI_TEND
 231 # define SCxSR_ERRORS(port)             SCI_ERRORS
 232 # define SCxSR_RDxF(port)               SCI_RDRF
 233 # define SCxSR_TDxE(port)               SCI_TDRE
 234 # define SCxSR_ORER(port)               SCI_ORER
 235 # define SCxSR_FER(port)                SCI_FER
 236 # define SCxSR_PER(port)                SCI_PER
 237 # define SCxSR_BRK(port)                0x00
 238 # define SCxSR_RDxF_CLEAR(port)         0xbc
 239 # define SCxSR_ERROR_CLEAR(port)        0xc4
 240 # define SCxSR_TDxE_CLEAR(port)         0x78
 241 # define SCxSR_BREAK_CLEAR(port)        0xc4
 242 #elif defined(SCIF_ONLY)
 243 # define SCxSR_TEND(port)               SCIF_TEND
 244 # define SCxSR_ERRORS(port)             SCIF_ERRORS
 245 # define SCxSR_RDxF(port)               SCIF_RDF
 246 # define SCxSR_TDxE(port)               SCIF_TDFE
 247 #if defined(CONFIG_CPU_SUBTYPE_SH7705)
 248 # define SCxSR_ORER(port)               SCIF_ORER
 249 #else
 250 # define SCxSR_ORER(port)               0x0000
 251 #endif
 252 # define SCxSR_FER(port)                SCIF_FER
 253 # define SCxSR_PER(port)                SCIF_PER
 254 # define SCxSR_BRK(port)                SCIF_BRK
 255 #if defined(CONFIG_CPU_SUBTYPE_SH7705) || \
 256     defined(CONFIG_CPU_SUBTYPE_SH7720)
 257 # define SCxSR_RDxF_CLEAR(port)         (sci_in(port,SCxSR)&0xfffc)
 258 # define SCxSR_ERROR_CLEAR(port)        (sci_in(port,SCxSR)&0xfd73)
 259 # define SCxSR_TDxE_CLEAR(port)         (sci_in(port,SCxSR)&0xffdf)
 260 # define SCxSR_BREAK_CLEAR(port)        (sci_in(port,SCxSR)&0xffe3)
 261 #else
 262 /* SH7705 can also use this, clearing is same between 7705 and 7709 */
 263 # define SCxSR_RDxF_CLEAR(port)         0x00fc
 264 # define SCxSR_ERROR_CLEAR(port)        0x0073
 265 # define SCxSR_TDxE_CLEAR(port)         0x00df
 266 # define SCxSR_BREAK_CLEAR(port)        0x00e3
 267 #endif
 268 #else
 269 # define SCxSR_TEND(port)        (((port)->type == PORT_SCI) ? SCI_TEND   : SCIF_TEND)
 270 # define SCxSR_ERRORS(port)      (((port)->type == PORT_SCI) ? SCI_ERRORS : SCIF_ERRORS)
 271 # define SCxSR_RDxF(port)        (((port)->type == PORT_SCI) ? SCI_RDRF   : SCIF_RDF)
 272 # define SCxSR_TDxE(port)        (((port)->type == PORT_SCI) ? SCI_TDRE   : SCIF_TDFE)
 273 # define SCxSR_ORER(port)        (((port)->type == PORT_SCI) ? SCI_ORER   : 0x0000)
 274 # define SCxSR_FER(port)         (((port)->type == PORT_SCI) ? SCI_FER    : SCIF_FER)
 275 # define SCxSR_PER(port)         (((port)->type == PORT_SCI) ? SCI_PER    : SCIF_PER)
 276 # define SCxSR_BRK(port)         (((port)->type == PORT_SCI) ? 0x00       : SCIF_BRK)
 277 # define SCxSR_RDxF_CLEAR(port)  (((port)->type == PORT_SCI) ? 0xbc : 0x00fc)
 278 # define SCxSR_ERROR_CLEAR(port) (((port)->type == PORT_SCI) ? 0xc4 : 0x0073)
 279 # define SCxSR_TDxE_CLEAR(port)  (((port)->type == PORT_SCI) ? 0x78 : 0x00df)
 280 # define SCxSR_BREAK_CLEAR(port) (((port)->type == PORT_SCI) ? 0xc4 : 0x00e3)
 281 #endif
 282
 283 /* SCFCR */
 284 #define SCFCR_RFRST 0x0002
 285 #define SCFCR_TFRST 0x0004
 286 #define SCFCR_TCRST 0x4000
 287 #define SCFCR_MCE   0x0008
 288
 289 #define SCI_MAJOR               204
 290 #define SCI_MINOR_START         8
 291
 292 /* Generic serial flags */
 293 #define SCI_RX_THROTTLE         0x0000001
 294
 295 #define SCI_MAGIC 0xbabeface
 296
 297 /*
 298  * Events are used to schedule things to happen at timer-interrupt
 299  * time, instead of at rs interrupt time.
 300  */
 301 #define SCI_EVENT_WRITE_WAKEUP  0
 302
 303 #define SCI_IN(size, offset)                                    \
 304   unsigned int addr = port->mapbase + (offset);                 \
 305   if ((size) == 8) {                                            \
 306     return ctrl_inb(addr);                                      \
 307   } else {                                                      \
 308     return ctrl_inw(addr);                                      \
 309   }
 310 #define SCI_OUT(size, offset, value)                            \
 311   unsigned int addr = port->mapbase + (offset);                 \
 312   if ((size) == 8) {                                            \
 313     ctrl_outb(value, addr);                                     \
 314   } else {                                                      \
 315     ctrl_outw(value, addr);                                     \
 316   }
 317
 318 #define CPU_SCIx_FNS(name, sci_offset, sci_size, scif_offset, scif_size)\
 319   static inline unsigned int sci_##name##_in(struct uart_port *port)    \
 320   {                                                                     \
 321     if (port->type == PORT_SCI) {                                       \
 322       SCI_IN(sci_size, sci_offset)                                      \
 323     } else {                                                            \
 324       SCI_IN(scif_size, scif_offset);                                   \
 325     }                                                                   \
 326   }                                                                     \
 327   static inline void sci_##name##_out(struct uart_port *port, unsigned int value) \
 328   {                                                                     \
 329     if (port->type == PORT_SCI) {                                       \
 330       SCI_OUT(sci_size, sci_offset, value)                              \
 331     } else {                                                            \
 332       SCI_OUT(scif_size, scif_offset, value);                           \
 333     }                                                                   \
 334   }
 335
 336 #define CPU_SCIF_FNS(name, scif_offset, scif_size)                              \
 337   static inline unsigned int sci_##name##_in(struct uart_port *port)    \
 338   {                                                                     \
 339     SCI_IN(scif_size, scif_offset);                                     \
 340   }                                                                     \
 341   static inline void sci_##name##_out(struct uart_port *port, unsigned int value) \
 342   {                                                                     \
 343     SCI_OUT(scif_size, scif_offset, value);                             \
 344   }
 345
 346 #define CPU_SCI_FNS(name, sci_offset, sci_size)                         \
 347   static inline unsigned int sci_##name##_in(struct uart_port* port)    \
 348   {                                                                     \
 349     SCI_IN(sci_size, sci_offset);                                       \
 350   }                                                                     \
 351   static inline void sci_##name##_out(struct uart_port* port, unsigned int value) \
 352   {                                                                     \
 353     SCI_OUT(sci_size, sci_offset, value);                               \
 354   }
 355
 356 #ifdef CONFIG_CPU_SH3
 357 #if defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
 358 #define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
 359                                 sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
 360                                  h8_sci_offset, h8_sci_size) \
 361   CPU_SCIx_FNS(name, sh4_sci_offset, sh4_sci_size, sh4_scif_offset, sh4_scif_size)
 362 #define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size) \
 363           CPU_SCIF_FNS(name, sh4_scif_offset, sh4_scif_size)
 364 #elif defined(CONFIG_CPU_SUBTYPE_SH7705) || \
 365       defined(CONFIG_CPU_SUBTYPE_SH7720)
 366 #define SCIF_FNS(name, scif_offset, scif_size) \
 367   CPU_SCIF_FNS(name, scif_offset, scif_size)
 368 #else
 369 #define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
 370                  sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
 371                  h8_sci_offset, h8_sci_size) \
 372   CPU_SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh3_scif_offset, sh3_scif_size)
 373 #define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size) \
 374   CPU_SCIF_FNS(name, sh3_scif_offset, sh3_scif_size)
 375 #endif
 376 #elif defined(__H8300H__) || defined(__H8300S__)
 377 #define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
 378                  sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
 379                  h8_sci_offset, h8_sci_size) \
 380   CPU_SCI_FNS(name, h8_sci_offset, h8_sci_size)
 381 #define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size)
 382 #else
 383 #define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
 384                  sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
 385                  h8_sci_offset, h8_sci_size) \
 386   CPU_SCIx_FNS(name, sh4_sci_offset, sh4_sci_size, sh4_scif_offset, sh4_scif_size)
 387 #define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size) \
 388   CPU_SCIF_FNS(name, sh4_scif_offset, sh4_scif_size)
 389 #endif
 390
 391 #if defined(CONFIG_CPU_SUBTYPE_SH7705) || \
 392     defined(CONFIG_CPU_SUBTYPE_SH7720)
 393
 394 SCIF_FNS(SCSMR,  0x00, 16)
 395 SCIF_FNS(SCBRR,  0x04,  8)
 396 SCIF_FNS(SCSCR,  0x08, 16)
 397 SCIF_FNS(SCTDSR, 0x0c,  8)
 398 SCIF_FNS(SCFER,  0x10, 16)
 399 SCIF_FNS(SCxSR,  0x14, 16)
 400 SCIF_FNS(SCFCR,  0x18, 16)
 401 SCIF_FNS(SCFDR,  0x1c, 16)
 402 SCIF_FNS(SCxTDR, 0x20,  8)
 403 SCIF_FNS(SCxRDR, 0x24,  8)
 404 SCIF_FNS(SCLSR,  0x24, 16)
 405 #else
 406 /*      reg      SCI/SH3   SCI/SH4  SCIF/SH3   SCIF/SH4  SCI/H8*/
 407 /*      name     off  sz   off  sz   off  sz   off  sz   off  sz*/
 408 SCIx_FNS(SCSMR,  0x00,  8, 0x00,  8, 0x00,  8, 0x00, 16, 0x00,  8)
 409 SCIx_FNS(SCBRR,  0x02,  8, 0x04,  8, 0x02,  8, 0x04,  8, 0x01,  8)
 410 SCIx_FNS(SCSCR,  0x04,  8, 0x08,  8, 0x04,  8, 0x08, 16, 0x02,  8)
 411 SCIx_FNS(SCxTDR, 0x06,  8, 0x0c,  8, 0x06,  8, 0x0C,  8, 0x03,  8)
 412 SCIx_FNS(SCxSR,  0x08,  8, 0x10,  8, 0x08, 16, 0x10, 16, 0x04,  8)
 413 SCIx_FNS(SCxRDR, 0x0a,  8, 0x14,  8, 0x0A,  8, 0x14,  8, 0x05,  8)
 414 SCIF_FNS(SCFCR,                      0x0c,  8, 0x18, 16)
 415 #if defined(CONFIG_CPU_SUBTYPE_SH7760) || \
 416     defined(CONFIG_CPU_SUBTYPE_SH7780) || \
 417     defined(CONFIG_CPU_SUBTYPE_SH7785)
 418 SCIF_FNS(SCFDR,                      0x0e, 16, 0x1C, 16)
 419 SCIF_FNS(SCTFDR,                     0x0e, 16, 0x1C, 16)
 420 SCIF_FNS(SCRFDR,                     0x0e, 16, 0x20, 16)
 421 SCIF_FNS(SCSPTR,                        0,  0, 0x24, 16)
 422 SCIF_FNS(SCLSR,                         0,  0, 0x28, 16)
 423 #else
 424 SCIF_FNS(SCFDR,                      0x0e, 16, 0x1C, 16)
 425 SCIF_FNS(SCSPTR,                        0,  0, 0x20, 16)
 426 SCIF_FNS(SCLSR,                         0,  0, 0x24, 16)
 427 #endif
 428 #endif
 429 #define sci_in(port, reg) sci_##reg##_in(port)
 430 #define sci_out(port, reg, value) sci_##reg##_out(port, value)
 431
 432 /* H8/300 series SCI pins assignment */
 433 #if defined(__H8300H__) || defined(__H8300S__)
 434 static const struct __attribute__((packed)) {
 435         int port;             /* GPIO port no */
 436         unsigned short rx,tx; /* GPIO bit no */
 437 } h8300_sci_pins[] = {
 438 #if defined(CONFIG_H83007) || defined(CONFIG_H83068)
 439         {    /* SCI0 */
 440                 .port = H8300_GPIO_P9,
 441                 .rx   = H8300_GPIO_B2,
 442                 .tx   = H8300_GPIO_B0,
 443         },
 444         {    /* SCI1 */
 445                 .port = H8300_GPIO_P9,
 446                 .rx   = H8300_GPIO_B3,
 447                 .tx   = H8300_GPIO_B1,
 448         },
 449         {    /* SCI2 */
 450                 .port = H8300_GPIO_PB,
 451                 .rx   = H8300_GPIO_B7,
 452                 .tx   = H8300_GPIO_B6,
 453         }
 454 #elif defined(CONFIG_H8S2678)
 455         {    /* SCI0 */
 456                 .port = H8300_GPIO_P3,
 457                 .rx   = H8300_GPIO_B2,
 458                 .tx   = H8300_GPIO_B0,
 459         },
 460         {    /* SCI1 */
 461                 .port = H8300_GPIO_P3,
 462                 .rx   = H8300_GPIO_B3,
 463                 .tx   = H8300_GPIO_B1,
 464         },
 465         {    /* SCI2 */
 466                 .port = H8300_GPIO_P5,
 467                 .rx   = H8300_GPIO_B1,
 468                 .tx   = H8300_GPIO_B0,
 469         }
 470 #endif
 471 };
 472 #endif
 473
 474 #if defined(CONFIG_CPU_SUBTYPE_SH7706) || \
 475     defined(CONFIG_CPU_SUBTYPE_SH7707) || \
 476     defined(CONFIG_CPU_SUBTYPE_SH7708) || \
 477     defined(CONFIG_CPU_SUBTYPE_SH7709)
 478 static inline int sci_rxd_in(struct uart_port *port)
 479 {
 480         if (port->mapbase == 0xfffffe80)
 481                 return ctrl_inb(SCPDR)&0x01 ? 1 : 0; /* SCI */
 482         if (port->mapbase == 0xa4000150)
 483                 return ctrl_inb(SCPDR)&0x10 ? 1 : 0; /* SCIF */
 484         if (port->mapbase == 0xa4000140)
 485                 return ctrl_inb(SCPDR)&0x04 ? 1 : 0; /* IRDA */
 486         return 1;
 487 }
 488 #elif defined(CONFIG_CPU_SUBTYPE_SH7705)
 489 static inline int sci_rxd_in(struct uart_port *port)
 490 {
 491         if (port->mapbase == SCIF0)
 492                 return ctrl_inb(SCPDR)&0x04 ? 1 : 0; /* IRDA */
 493         if (port->mapbase == SCIF2)
 494                 return ctrl_inb(SCPDR)&0x10 ? 1 : 0; /* SCIF */
 495         return 1;
 496 }
 497 #elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
 498 static inline int sci_rxd_in(struct uart_port *port)
 499 {
 500           return sci_in(port,SCxSR)&0x0010 ? 1 : 0;
 501 }
 502 static inline void set_sh771x_scif_pfc(struct uart_port *port)
 503 {
 504         if (port->mapbase == 0xA4400000){
 505                 ctrl_outw(ctrl_inw(PACR)&0xffc0,PACR);
 506                 ctrl_outw(ctrl_inw(PBCR)&0x0fff,PBCR);
 507                 return;
 508         }
 509         if (port->mapbase == 0xA4410000){
 510                 ctrl_outw(ctrl_inw(PBCR)&0xf003,PBCR);
 511                 return;
 512         }
 513 }
 514 #elif defined(CONFIG_CPU_SUBTYPE_SH7720)
 515 static inline int sci_rxd_in(struct uart_port *port)
 516 {
 517         if (port->mapbase == 0xa4430000)
 518                 return sci_in(port, SCxSR) & 0x0003 ? 1 : 0;
 519         else if (port->mapbase == 0xa4438000)
 520                 return sci_in(port, SCxSR) & 0x0003 ? 1 : 0;
 521         return 1;
 522 }
 523 #elif defined(CONFIG_CPU_SUBTYPE_SH7750)  || \
 524       defined(CONFIG_CPU_SUBTYPE_SH7751)  || \
 525       defined(CONFIG_CPU_SUBTYPE_SH7751R) || \
 526       defined(CONFIG_CPU_SUBTYPE_SH7750R) || \
 527       defined(CONFIG_CPU_SUBTYPE_SH7750S) || \
 528       defined(CONFIG_CPU_SUBTYPE_SH7091)  || \
 529       defined(CONFIG_CPU_SUBTYPE_SH4_202)
 530 static inline int sci_rxd_in(struct uart_port *port)
 531 {
 532 #ifndef SCIF_ONLY
 533         if (port->mapbase == 0xffe00000)
 534                 return ctrl_inb(SCSPTR1)&0x01 ? 1 : 0; /* SCI */
 535 #endif
 536 #ifndef SCI_ONLY
 537         if (port->mapbase == 0xffe80000)
 538                 return ctrl_inw(SCSPTR2)&0x0001 ? 1 : 0; /* SCIF */
 539 #endif
 540         return 1;
 541 }
 542 #elif defined(CONFIG_CPU_SUBTYPE_SH7760)
 543 static inline int sci_rxd_in(struct uart_port *port)
 544 {
 545         if (port->mapbase == 0xfe600000)
 546                 return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
 547         if (port->mapbase == 0xfe610000)
 548                 return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
 549         if (port->mapbase == 0xfe620000)
 550                 return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
 551         return 1;
 552 }
 553 #elif defined(CONFIG_CPU_SUBTYPE_SH7343)
 554 static inline int sci_rxd_in(struct uart_port *port)
 555 {
 556         if (port->mapbase == 0xffe00000)
 557                 return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
 558         if (port->mapbase == 0xffe10000)
 559                 return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
 560         if (port->mapbase == 0xffe20000)
 561                 return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
 562         if (port->mapbase == 0xffe30000)
 563                 return ctrl_inw(SCSPTR3) & 0x0001 ? 1 : 0; /* SCIF */
 564         return 1;
 565 }
 566 #elif defined(CONFIG_CPU_SUBTYPE_SH7722)
 567 static inline int sci_rxd_in(struct uart_port *port)
 568 {
 569         if (port->mapbase == 0xffe00000)
 570                 return ctrl_inb(SCPDR0) & 0x0001 ? 1 : 0; /* SCIF0 */
 571         return 1;
 572 }
 573 #elif defined(CONFIG_CPU_SUBTYPE_SH5_101) || defined(CONFIG_CPU_SUBTYPE_SH5_103)
 574 static inline int sci_rxd_in(struct uart_port *port)
 575 {
 576          return sci_in(port, SCSPTR)&0x0001 ? 1 : 0; /* SCIF */
 577 }
 578 #elif defined(__H8300H__) || defined(__H8300S__)
 579 static inline int sci_rxd_in(struct uart_port *port)
 580 {
 581         int ch = (port->mapbase - SMR0) >> 3;
 582         return (H8300_SCI_DR(ch) & h8300_sci_pins[ch].rx) ? 1 : 0;
 583 }
 584 #elif defined(CONFIG_CPU_SUBTYPE_SH7770)
 585 static inline int sci_rxd_in(struct uart_port *port)
 586 {
 587         if (port->mapbase == 0xff923000)
 588                 return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
 589         if (port->mapbase == 0xff924000)
 590                 return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
 591         if (port->mapbase == 0xff925000)
 592                 return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
 593         return 1;
 594 }
 595 #elif defined(CONFIG_CPU_SUBTYPE_SH7780)
 596 static inline int sci_rxd_in(struct uart_port *port)
 597 {
 598         if (port->mapbase == 0xffe00000)
 599                 return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
 600         if (port->mapbase == 0xffe10000)
 601                 return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
 602         return 1;
 603 }
 604 #elif defined(CONFIG_CPU_SUBTYPE_SH7785)
 605 static inline int sci_rxd_in(struct uart_port *port)
 606 {
 607         if (port->mapbase == 0xffea0000)
 608                 return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
 609         if (port->mapbase == 0xffeb0000)
 610                 return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
 611         if (port->mapbase == 0xffec0000)
 612                 return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
 613         if (port->mapbase == 0xffed0000)
 614                 return ctrl_inw(SCSPTR3) & 0x0001 ? 1 : 0; /* SCIF */
 615         if (port->mapbase == 0xffee0000)
 616                 return ctrl_inw(SCSPTR4) & 0x0001 ? 1 : 0; /* SCIF */
 617         if (port->mapbase == 0xffef0000)
 618                 return ctrl_inw(SCSPTR5) & 0x0001 ? 1 : 0; /* SCIF */
 619         return 1;
 620 }
 621 #elif defined(CONFIG_CPU_SUBTYPE_SH7203) || \
 622       defined(CONFIG_CPU_SUBTYPE_SH7206)
 623 static inline int sci_rxd_in(struct uart_port *port)
 624 {
 625         if (port->mapbase == 0xfffe8000)
 626                 return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
 627         if (port->mapbase == 0xfffe8800)
 628                 return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
 629         if (port->mapbase == 0xfffe9000)
 630                 return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
 631         if (port->mapbase == 0xfffe9800)
 632                 return ctrl_inw(SCSPTR3) & 0x0001 ? 1 : 0; /* SCIF */
 633         return 1;
 634 }
 635 #elif defined(CONFIG_CPU_SUBTYPE_SH7619)
 636 static inline int sci_rxd_in(struct uart_port *port)
 637 {
 638         if (port->mapbase == 0xf8400000)
 639                 return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
 640         if (port->mapbase == 0xf8410000)
 641                 return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
 642         if (port->mapbase == 0xf8420000)
 643                 return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
 644         return 1;
 645 }
 646 #elif defined(CONFIG_CPU_SUBTYPE_SHX3)
 647 static inline int sci_rxd_in(struct uart_port *port)
 648 {
 649         if (port->mapbase == 0xffc30000)
 650                 return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
 651         if (port->mapbase == 0xffc40000)
 652                 return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
 653         if (port->mapbase == 0xffc50000)
 654                 return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
 655         if (port->mapbase == 0xffc60000)
 656                 return ctrl_inw(SCSPTR3) & 0x0001 ? 1 : 0; /* SCIF */
 657         return 1;
 658 }
 659 #endif
 660
 661 /*
 662  * Values for the BitRate Register (SCBRR)
 663  *
 664  * The values are actually divisors for a frequency which can
 665  * be internal to the SH3 (14.7456MHz) or derived from an external
 666  * clock source.  This driver assumes the internal clock is used;
 667  * to support using an external clock source, config options or
 668  * possibly command-line options would need to be added.
 669  *
 670  * Also, to support speeds below 2400 (why?) the lower 2 bits of
 671  * the SCSMR register would also need to be set to non-zero values.
 672  *
 673  * -- Greg Banks 27Feb2000
 674  *
 675  * Answer: The SCBRR register is only eight bits, and the value in
 676  * it gets larger with lower baud rates. At around 2400 (depending on
 677  * the peripherial module clock) you run out of bits. However the
 678  * lower two bits of SCSMR allow the module clock to be divided down,
 679  * scaling the value which is needed in SCBRR.
 680  *
 681  * -- Stuart Menefy - 23 May 2000
 682  *
 683  * I meant, why would anyone bother with bitrates below 2400.
 684  *
 685  * -- Greg Banks - 7Jul2000
 686  *
 687  * You "speedist"!  How will I use my 110bps ASR-33 teletype with paper
 688  * tape reader as a console!
 689  *
 690  * -- Mitch Davis - 15 Jul 2000
 691  */
 692
 693 #if defined(CONFIG_CPU_SUBTYPE_SH7780) || \
 694     defined(CONFIG_CPU_SUBTYPE_SH7785)
 695 #define SCBRR_VALUE(bps, clk) ((clk+16*bps)/(16*bps)-1)
 696 #elif defined(CONFIG_CPU_SUBTYPE_SH7705) || \
 697       defined(CONFIG_CPU_SUBTYPE_SH7720)
 698 #define SCBRR_VALUE(bps, clk) (((clk*2)+16*bps)/(32*bps)-1)
 699 #elif defined(__H8300H__) || defined(__H8300S__)
 700 #define SCBRR_VALUE(bps) (((CONFIG_CPU_CLOCK*1000/32)/bps)-1)
 701 #elif defined(CONFIG_SUPERH64)
 702 #define SCBRR_VALUE(bps) ((current_cpu_data.module_clock+16*bps)/(32*bps)-1)
 703 #else /* Generic SH */
 704 #define SCBRR_VALUE(bps, clk) ((clk+16*bps)/(32*bps)-1)
 705 #endif