xref: /linux/arch/m68k/include/asm/amigayle.h (revision e5451c8f8330e03ad3cfa16048b4daf961af434f)
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