include/linux/hdreg.h

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 1 #ifndef _LINUX_HDREG_H
 2 #define _LINUX_HDREG_H
 3
 4 #include <linux/config.h>
 5
 6 /*
 7  * This file contains some defines for the AT-hd-controller.
 8  * Various sources. Check out some definitions (see comments with
 9  * a ques).
 10  */
 11
 12 /* Hd controller regs. Ref: IBM AT Bios-listing */
 13 /* For a second IDE interface, xor all addresses with 0x80 */
 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 /* Bits of HD_STATUS */
 30 #define ERR_STAT 0x01
 31 #define INDEX_STAT 0x02
 32 #define ECC_STAT 0x04/* Corrected error */
 33 #define DRQ_STAT 0x08
 34 #define SEEK_STAT 0x10
 35 #define WRERR_STAT 0x20
 36 #define READY_STAT 0x40
 37 #define BUSY_STAT 0x80
 38
 39 /* Values for HD_COMMAND */
 40 #define WIN_RESTORE 0x10
 41 #define WIN_READ 0x20
 42 #define WIN_WRITE 0x30
 43 #define WIN_VERIFY 0x40
 44 #define WIN_FORMAT 0x50
 45 #define WIN_INIT 0x60
 46 #define WIN_SEEK 0x70
 47 #define WIN_DIAGNOSE 0x90
 48 #define WIN_SPECIFY 0x91
 49 #define WIN_SETIDLE1 0xE3
 50 #define WIN_SETIDLE2 0x97
 51
 52 #define WIN_PIDENTIFY 0xA1/* identify ATA-PI device */
 53 #define WIN_MULTREAD 0xC4/* read multiple sectors */
 54 #define WIN_MULTWRITE 0xC5/* write multiple sectors */
 55 #define WIN_SETMULT 0xC6/* enable read multiple */
 56 #define WIN_IDENTIFY 0xEC/* ask drive to identify itself */
 57 #define WIN_SETFEATURES 0xEF/* set special drive features */
 58
 59 /* Bits for HD_ERROR */
 60 #define MARK_ERR 0x01/* Bad address mark */
 61 #define TRK0_ERR 0x02/* couldn't find track 0 */
 62 #define ABRT_ERR 0x04/* Command aborted */
 63 #define ID_ERR 0x10/* ID field not found */
 64 #define ECC_ERR 0x40/* Uncorrectable ECC error */
 65 #define BBD_ERR 0x80/* block marked bad */
 66
 67 struct hd_geometry {
 68 unsigned char heads;
 69 unsigned char sectors;
 70 unsigned short cylinders;
 71 unsigned long start;
 72 };
 73
 74 /* hd/ide ctl's that pass (arg) ptrs to user space are numbered 0x30n/0x31n */
 75 #define HDIO_GETGEO 0x301/* get device geometry */
 76 #define HDIO_REQ HDIO_GETGEO/* obsolete, use HDIO_GETGEO */
 77 #define HDIO_GET_UNMASKINTR 0x302/* get current unmask setting */
 78 #define HDIO_GET_MULTCOUNT 0x304/* get current IDE blockmode setting */
 79 #define HDIO_GET_IDENTITY 0x307/* get IDE identification info */
 80 #define HDIO_GET_KEEPSETTINGS 0x308/* get keep-settings-on-reset flag */
 81 #define HDIO_DRIVE_CMD 0x31f/* execute a special drive command */
 82
 83 /* hd/ide ctl's that pass (arg) non-ptr values are numbered 0x32n/0x33n */
 84 #define HDIO_SET_MULTCOUNT 0x321/* set IDE blockmode */
 85 #define HDIO_SET_UNMASKINTR 0x322/* permit other irqs during I/O */
 86 #define HDIO_SET_KEEPSETTINGS 0x323/* keep ioctl settings on reset */
 87
 88 /* structure returned by HDIO_GET_IDENTITY, as per ANSI ATA2 rev.2f spec */
 89 struct hd_driveid {
 90 unsigned short config;/* lots of obsolete bit flags */
 91 unsigned short cyls;/* "physical" cyls */
 92 unsigned short reserved2;/* reserved (word 2) */
 93 unsigned short heads;/* "physical" heads */
 94 unsigned short track_bytes;/* unformatted bytes per track */
 95 unsigned short sector_bytes;/* unformatted bytes per sector */
 96 unsigned short sectors;/* "physical" sectors per track */
 97 unsigned short vendor0;/* vendor unique */
 98 unsigned short vendor1;/* vendor unique */
 99 unsigned short vendor2;/* vendor unique */
 100 unsigned char serial_no[20];/* 0 = not_specified */
 101 unsigned short buf_type;
 102 unsigned short buf_size;/* 512 byte increments; 0 = not_specified */
 103 unsigned short ecc_bytes;/* for r/w long cmds; 0 = not_specified */
 104 unsigned char fw_rev[8];/* 0 = not_specified */
 105 unsigned char model[40];/* 0 = not_specified */
 106 unsigned char max_multsect;/* 0=not_implemented */
 107 unsigned char vendor3;/* vendor unique */
 108 unsigned short dword_io;/* 0=not_implemented; 1=implemented */
 109 unsigned char vendor4;/* vendor unique */
 110 unsigned char capability;/* bits 0:DMA 1:LBA 2:IORDYsw 3:IORDYsup*/
 111 unsigned short reserved50;/* reserved (word 50) */
 112 unsigned char vendor5;/* vendor unique */
 113 unsigned char tPIO;/* 0=slow, 1=medium, 2=fast */
 114 unsigned char vendor6;/* vendor unique */
 115 unsigned char tDMA;/* 0=slow, 1=medium, 2=fast */
 116 unsigned short field_valid;/* bits 0:cur_ok 1:eide_ok */
 117 unsigned short cur_cyls;/* logical cylinders */
 118 unsigned short cur_heads;/* logical heads */
 119 unsigned short cur_sectors;/* logical sectors per track */
 120 unsigned short cur_capacity0;/* logical total sectors on drive */
 121 unsigned short cur_capacity1;/* (2 words, misaligned int) */
 122 unsigned char multsect;/* current multiple sector count */
 123 unsigned char multsect_valid;/* when (bit0==1) multsect is ok */
 124 unsigned int lba_capacity;/* total number of sectors */
 125 unsigned short dma_1word;/* single-word dma info */
 126 unsigned short dma_mword;/* multiple-word dma info */
 127 unsigned short eide_pio_modes;/* bits 0:mode3 1:mode4 */
 128 unsigned short eide_dma_min;/* min mword dma cycle time (ns) */
 129 unsigned short eide_dma_time;/* recommended mword dma cycle time (ns) */
 130 unsigned short eide_pio;/* min cycle time (ns), no IORDY */
 131 unsigned short eide_pio_iordy;/* min cycle time (ns), with IORDY */
 132 unsigned short reserved69;/* reserved (word 69) */
 133 unsigned short reserved70;/* reserved (word 70) */
 134 /* unsigned short reservedxx[57];*//* reserved (words 71-127) */
 135 /* unsigned short vendor7 [32];*//* vendor unique (words 128-159) */
 136 /* unsigned short reservedyy[96];*//* reserved (words 160-255) */
 137 };
 138
 139 /*
 140  * These routines are used for kernel command line parameters from main.c:
 141  */
 142 #ifdef CONFIG_BLK_DEV_HD
 143 voidhd_setup(char*,int*);
 144 #endif/* CONFIG_BLK_DEV_HD */
 145 #ifdef CONFIG_BLK_DEV_IDE
 146 voidide_setup(char*,int*);
 147 voidhda_setup(char*,int*);
 148 voidhdb_setup(char*,int*);
 149 voidhdc_setup(char*,int*);
 150 voidhdd_setup(char*,int*);
 151 #endif/* CONFIG_BLK_DEV_IDE */
 152
 153 #endif/* _LINUX_HDREG_H */