release/src-rt-6.x.4708/linux/linux-2.6.36/arch/m68k/include/asm/amigayle.h

   1 /*
   2 ** asm-m68k/amigayle.h -- This header defines the registers of the gayle chip
   3 **                        found on the Amiga 1200
   4 **                        This information was found by disassembling card.resource,
   5 **                        so the definitions may not be 100% correct
   6 **                        anyone has an official doc ?
   7 **
   8 ** Copyright 1997 by Alain Malek
   9 **
  10 ** This file is subject to the terms and conditions of the GNU General Public
  11 ** License.  See the file COPYING in the main directory of this archive
  12 ** for more details.
  13 **
  14 ** Created: 11/28/97 by Alain Malek
  15 */
  16
  17 #ifndef _M68K_AMIGAYLE_H_
  18 #define _M68K_AMIGAYLE_H_
  19
  20 #include <linux/types.h>
  21 #include <asm/amigahw.h>
  22
  23 /* memory layout */
  24
  25 #define GAYLE_RAM               (0x600000+zTwoBase)
  26 #define GAYLE_RAMSIZE           (0x400000)
  27 #define GAYLE_ATTRIBUTE         (0xa00000+zTwoBase)
  28 #define GAYLE_ATTRIBUTESIZE     (0x020000)
  29 #define GAYLE_IO                (0xa20000+zTwoBase)     /* 16bit and even 8bit registers */
  30 #define GAYLE_IOSIZE            (0x010000)
  31 #define GAYLE_IO_8BITODD        (0xa30000+zTwoBase)     /* odd 8bit registers */
  32
  33 /* offset for accessing odd IO registers */
  34 #define GAYLE_ODD               (GAYLE_IO_8BITODD-GAYLE_IO-1)
  35
  36 /* GAYLE registers */
  37
  38 struct GAYLE {
  39         u_char cardstatus;
  40         u_char pad0[0x1000-1];
  41
  42         u_char intreq;
  43         u_char pad1[0x1000-1];
  44
  45         u_char inten;
  46         u_char pad2[0x1000-1];
  47
  48         u_char config;
  49         u_char pad3[0x1000-1];
  50 };
  51
  52 #define GAYLE_ADDRESS   (0xda8000)      /* gayle main registers base address */
  53
  54 #define GAYLE_RESET     (0xa40000)      /* write 0x00 to start reset,
  55                                            read 1 byte to stop reset */
  56
  57 #define gayle (*(volatile struct GAYLE *)(zTwoBase+GAYLE_ADDRESS))
  58 #define gayle_reset (*(volatile u_char *)(zTwoBase+GAYLE_RESET))
  59
  60 #define gayle_attribute ((volatile u_char *)(GAYLE_ATTRIBUTE))
  61
  62
  63 /* GAYLE_CARDSTATUS bit def */
  64
  65 #define GAYLE_CS_CCDET          0x40    /* credit card detect */
  66 #define GAYLE_CS_BVD1           0x20    /* battery voltage detect 1 */
  67 #define GAYLE_CS_SC             0x20    /* credit card status change */
  68 #define GAYLE_CS_BVD2           0x10    /* battery voltage detect 2 */
  69 #define GAYLE_CS_DA             0x10    /* digital audio */
  70 #define GAYLE_CS_WR             0x08    /* write enable (1 == enabled) */
  71 #define GAYLE_CS_BSY            0x04    /* credit card busy */
  72 #define GAYLE_CS_IRQ            0x04    /* interrupt request */
  73
  74 /* GAYLE_IRQ bit def */
  75
  76 #define GAYLE_IRQ_IDE           0x80
  77 #define GAYLE_IRQ_CCDET         0x40
  78 #define GAYLE_IRQ_BVD1          0x20
  79 #define GAYLE_IRQ_SC            0x20
  80 #define GAYLE_IRQ_BVD2          0x10
  81 #define GAYLE_IRQ_DA            0x10
  82 #define GAYLE_IRQ_WR            0x08
  83 #define GAYLE_IRQ_BSY           0x04
  84 #define GAYLE_IRQ_IRQ           0x04
  85 #define GAYLE_IRQ_IDEACK1       0x02
  86 #define GAYLE_IRQ_IDEACK0       0x01
  87
  88 /* GAYLE_CONFIG bit def
  89    (bit 0-1 for program voltage, bit 2-3 for access speed */
  90
  91 #define GAYLE_CFG_0V            0x00
  92 #define GAYLE_CFG_5V            0x01
  93 #define GAYLE_CFG_12V           0x02
  94
  95 #define GAYLE_CFG_100NS         0x08
  96 #define GAYLE_CFG_150NS         0x04
  97 #define GAYLE_CFG_250NS         0x00
  98 #define GAYLE_CFG_720NS         0x0c
  99
 100 struct gayle_ide_platform_data {
 101         unsigned long base;
 102         unsigned long irqport;
 103         int explicit_ack;       /* A1200 IDE needs explicit ack */
 104 };
 105
 106 #endif /* asm-m68k/amigayle.h */