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 #if 0 63 #define gayle_inb(a) readb( GAYLE_IO+(a)+(((a)&1)*GAYLE_ODD) ) 64 #define gayle_outb(v,a) writeb( v, GAYLE_IO+(a)+(((a)&1)*GAYLE_ODD) ) 65 66 #define gayle_inw(a) readw( GAYLE_IO+(a) ) 67 #define gayle_outw(v,a) writew( v, GAYLE_IO+(a) ) 68 #endif 69 70 /* GAYLE_CARDSTATUS bit def */ 71 72 #define GAYLE_CS_CCDET 0x40 /* credit card detect */ 73 #define GAYLE_CS_BVD1 0x20 /* battery voltage detect 1 */ 74 #define GAYLE_CS_SC 0x20 /* credit card status change */ 75 #define GAYLE_CS_BVD2 0x10 /* battery voltage detect 2 */ 76 #define GAYLE_CS_DA 0x10 /* digital audio */ 77 #define GAYLE_CS_WR 0x08 /* write enable (1 == enabled) */ 78 #define GAYLE_CS_BSY 0x04 /* credit card busy */ 79 #define GAYLE_CS_IRQ 0x04 /* interrupt request */ 80 81 /* GAYLE_IRQ bit def */ 82 83 #define GAYLE_IRQ_IDE 0x80 84 #define GAYLE_IRQ_CCDET 0x40 85 #define GAYLE_IRQ_BVD1 0x20 86 #define GAYLE_IRQ_SC 0x20 87 #define GAYLE_IRQ_BVD2 0x10 88 #define GAYLE_IRQ_DA 0x10 89 #define GAYLE_IRQ_WR 0x08 90 #define GAYLE_IRQ_BSY 0x04 91 #define GAYLE_IRQ_IRQ 0x04 92 #define GAYLE_IRQ_IDEACK1 0x02 93 #define GAYLE_IRQ_IDEACK0 0x01 94 95 /* GAYLE_CONFIG bit def 96 (bit 0-1 for program voltage, bit 2-3 for access speed */ 97 98 #define GAYLE_CFG_0V 0x00 99 #define GAYLE_CFG_5V 0x01 100 #define GAYLE_CFG_12V 0x02 101 102 #define GAYLE_CFG_100NS 0x08 103 #define GAYLE_CFG_150NS 0x04 104 #define GAYLE_CFG_250NS 0x00 105 #define GAYLE_CFG_720NS 0x0c 106 107 #endif /* asm-m68k/amigayle.h */ 108