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1 #ifndef _LINUX_HDREG_H
2 #define _LINUX_HDREG_H
3
4 /*
5 * This file contains some defines for the AT-hd-controller.
6 * Various sources.
7 */
8
9 #define HD_IRQ 14 /* the standard disk interrupt */
10
11 /* ide.c has it's own port definitions in "ide.h" */
12
13 /* Hd controller regs. Ref: IBM AT Bios-listing */
14 #define HD_DATA 0x1f0 /* _CTL when writing */
15 #define HD_ERROR 0x1f1 /* see err-bits */
16 #define HD_NSECTOR 0x1f2 /* nr of sectors to read/write */
17 #define HD_SECTOR 0x1f3 /* starting sector */
18 #define HD_LCYL 0x1f4 /* starting cylinder */
19 #define HD_HCYL 0x1f5 /* high byte of starting cyl */
20 #define HD_CURRENT 0x1f6 /* 101dhhhh , d=drive, hhhh=head */
21 #define HD_STATUS 0x1f7 /* see status-bits */
22 #define HD_FEATURE HD_ERROR /* same io address, read=error, write=feature */
23 #define HD_PRECOMP HD_FEATURE /* obsolete use of this port - predates IDE */
24 #define HD_COMMAND HD_STATUS /* same io address, read=status, write=cmd */
25
26 #define HD_CMD 0x3f6 /* used for resets */
27 #define HD_ALTSTATUS 0x3f6 /* same as HD_STATUS but doesn't clear irq */
28
29 /* remainder is shared between hd.c, ide.c, ide-cd.c, and the hdparm utility */
30
31 /* Bits of HD_STATUS */
32 #define ERR_STAT 0x01
33 #define INDEX_STAT 0x02
34 #define ECC_STAT 0x04 /* Corrected error */
35 #define DRQ_STAT 0x08
36 #define SEEK_STAT 0x10
37 #define WRERR_STAT 0x20
38 #define READY_STAT 0x40
39 #define BUSY_STAT 0x80
40
41 /* Values for HD_COMMAND */
42 #define WIN_RESTORE 0x10
43 #define WIN_READ 0x20
44 #define WIN_WRITE 0x30
45 #define WIN_VERIFY 0x40
46 #define WIN_FORMAT 0x50
47 #define WIN_INIT 0x60
48 #define WIN_SEEK 0x70
49 #define WIN_DIAGNOSE 0x90
50 #define WIN_SPECIFY 0x91 /* set drive geometry translation */
51 #define WIN_SETIDLE1 0xE3
52 #define WIN_SETIDLE2 0x97
53
54 #define WIN_DOORLOCK 0xde /* lock door on removeable drives */
55 #define WIN_DOORUNLOCK 0xdf /* unlock door on removeable drives */
56
57 #define WIN_MULTREAD 0xC4 /* read sectors using multiple mode */
58 #define WIN_MULTWRITE 0xC5 /* write sectors using multiple mode */
59 #define WIN_SETMULT 0xC6 /* enable/disable multiple mode */
60 #define WIN_IDENTIFY 0xEC /* ask drive to identify itself */
61 #define WIN_SETFEATURES 0xEF /* set special drive features */
62 #define WIN_READDMA 0xc8 /* read sectors using DMA transfers */
63 #define WIN_WRITEDMA 0xca /* write sectors using DMA transfers */
64
65 /* Additional drive command codes used by ATAPI devices. */
66 #define WIN_PIDENTIFY 0xA1 /* identify ATAPI device */
67 #define WIN_SRST 0x08 /* ATAPI soft reset command */
68 #define WIN_PACKETCMD 0xa0 /* Send a packet command. */
69
70 /* Bits for HD_ERROR */
71 #define MARK_ERR 0x01 /* Bad address mark */
72 #define TRK0_ERR 0x02 /* couldn't find track 0 */
73 #define ABRT_ERR 0x04 /* Command aborted */
74 #define ID_ERR 0x10 /* ID field not found */
75 #define ECC_ERR 0x40 /* Uncorrectable ECC error */
76 #define BBD_ERR 0x80 /* block marked bad */
77
78 struct hd_geometry {
79 unsigned char heads;
80 unsigned char sectors;
81 unsigned short cylinders;
82 unsigned long start;
83 };
84
85 /* hd/ide ctl's that pass (arg) ptrs to user space are numbered 0x030n/0x031n */
86 #define HDIO_GETGEO 0x0301 /* get device geometry */
87 #define HDIO_GET_UNMASKINTR 0x0302 /* get current unmask setting */
88 #define HDIO_GET_MULTCOUNT 0x0304 /* get current IDE blockmode setting */
89 #define HDIO_GET_IDENTITY 0x0307 /* get IDE identification info */
90 #define HDIO_GET_KEEPSETTINGS 0x0308 /* get keep-settings-on-reset flag */
91 #define HDIO_GET_CHIPSET 0x0309 /* get current interface type setting */
92 #define HDIO_GET_NOWERR 0x030a /* get ignore-write-error flag */
93 #define HDIO_GET_DMA 0x030b /* get use-dma flag */
94 #define HDIO_DRIVE_CMD 0x031f /* execute a special drive command */
95
96 /* hd/ide ctl's that pass (arg) non-ptr values are numbered 0x032n/0x033n */
97 #define HDIO_SET_MULTCOUNT 0x0321 /* set IDE blockmode */
98 #define HDIO_SET_UNMASKINTR 0x0322 /* permit other irqs during I/O */
99 #define HDIO_SET_KEEPSETTINGS 0x0323 /* keep ioctl settings on reset */
100 #define HDIO_SET_CHIPSET 0x0324 /* optimise driver for interface type */
101 #define HDIO_SET_NOWERR 0x0325 /* set ignore-write-error flag */
102 #define HDIO_SET_DMA 0x0326 /* set use-dma flag */
103
104 /* structure returned by HDIO_GET_IDENTITY, as per ANSI ATA2 rev.2f spec */
105 struct hd_driveid {
106 unsigned short config; /* lots of obsolete bit flags */
107 unsigned short cyls; /* "physical" cyls */
108 unsigned short reserved2; /* reserved (word 2) */
109 unsigned short heads; /* "physical" heads */
110 unsigned short track_bytes; /* unformatted bytes per track */
111 unsigned short sector_bytes; /* unformatted bytes per sector */
112 unsigned short sectors; /* "physical" sectors per track */
113 unsigned short vendor0; /* vendor unique */
114 unsigned short vendor1; /* vendor unique */
115 unsigned short vendor2; /* vendor unique */
116 unsigned char serial_no[20]; /* 0 = not_specified */
117 unsigned short buf_type;
118 unsigned short buf_size; /* 512 byte increments; 0 = not_specified */
119 unsigned short ecc_bytes; /* for r/w long cmds; 0 = not_specified */
120 unsigned char fw_rev[8]; /* 0 = not_specified */
121 unsigned char model[40]; /* 0 = not_specified */
122 unsigned char max_multsect; /* 0=not_implemented */
123 unsigned char vendor3; /* vendor unique */
124 unsigned short dword_io; /* 0=not_implemented; 1=implemented */
125 unsigned char vendor4; /* vendor unique */
126 unsigned char capability; /* bits 0:DMA 1:LBA 2:IORDYsw 3:IORDYsup*/
127 unsigned short reserved50; /* reserved (word 50) */
128 unsigned char vendor5; /* vendor unique */
129 unsigned char tPIO; /* 0=slow, 1=medium, 2=fast */
130 unsigned char vendor6; /* vendor unique */
131 unsigned char tDMA; /* 0=slow, 1=medium, 2=fast */
132 unsigned short field_valid; /* bits 0:cur_ok 1:eide_ok */
133 unsigned short cur_cyls; /* logical cylinders */
134 unsigned short cur_heads; /* logical heads */
135 unsigned short cur_sectors; /* logical sectors per track */
136 unsigned short cur_capacity0; /* logical total sectors on drive */
137 unsigned short cur_capacity1; /* (2 words, misaligned int) */
138 unsigned char multsect; /* current multiple sector count */
139 unsigned char multsect_valid; /* when (bit0==1) multsect is ok */
140 unsigned int lba_capacity; /* total number of sectors */
141 unsigned short dma_1word; /* single-word dma info */
142 unsigned short dma_mword; /* multiple-word dma info */
143 unsigned short eide_pio_modes; /* bits 0:mode3 1:mode4 */
144 unsigned short eide_dma_min; /* min mword dma cycle time (ns) */
145 unsigned short eide_dma_time; /* recommended mword dma cycle time (ns) */
146 unsigned short eide_pio; /* min cycle time (ns), no IORDY */
147 unsigned short eide_pio_iordy; /* min cycle time (ns), with IORDY */
148 unsigned short reserved69; /* reserved (word 69) */
149 unsigned short reserved70; /* reserved (word 70) */
150 /* unsigned short reservedxx[57];*/ /* reserved (words 71-127) */
151 /* unsigned short vendor7 [32];*/ /* vendor unique (words 128-159) */
152 /* unsigned short reservedyy[96];*/ /* reserved (words 160-255) */
153 };
154
155 #ifdef __KERNEL__
156 /*
157 * These routines are used for kernel command line parameters from main.c:
158 */
159 #include <linux/config.h>
160
161 #ifdef CONFIG_BLK_DEV_HD
162 void hd_setup(char *, int *);
163 #endif /* CONFIG_BLK_DEV_HD */
164 #ifdef CONFIG_BLK_DEV_IDE
165 void ide_setup(char *);
166 #endif /* CONFIG_BLK_DEV_IDE */
167
168 #endif /* __KERNEL__ */
169
170 #endif /* _LINUX_HDREG_H */
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*/