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 struct gayle_ide_platform_data {
108 unsigned long base;
109 unsigned long irqport;
110 int explicit_ack; /* A1200 IDE needs explicit ack */
111 };
112
113 #endif /* asm-m68k/amigayle.h */
114
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