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. 9 */ 10 11 #define HD_IRQ 14 /* the standard disk interrupt */ 12 13 /* ide.c has it's own port definitions in "ide.h" */ 14 15 /* Hd controller regs. Ref: IBM AT Bios-listing */ 16 #define HD_DATA 0x1f0 /* _CTL when writing */ 17 #define HD_ERROR 0x1f1 /* see err-bits */ 18 #define HD_NSECTOR 0x1f2 /* nr of sectors to read/write */ 19 #define HD_SECTOR 0x1f3 /* starting sector */ 20 #define HD_LCYL 0x1f4 /* starting cylinder */ 21 #define HD_HCYL 0x1f5 /* high byte of starting cyl */ 22 #define HD_CURRENT 0x1f6 /* 101dhhhh , d=drive, hhhh=head */ 23 #define HD_STATUS 0x1f7 /* see status-bits */ 24 #define HD_FEATURE HD_ERROR /* same io address, read=error, write=feature */ 25 #define HD_PRECOMP HD_FEATURE /* obsolete use of this port - predates IDE */ 26 #define HD_COMMAND HD_STATUS /* same io address, read=status, write=cmd */ 27 28 #define HD_CMD 0x3f6 /* used for resets */ 29 #define HD_ALTSTATUS 0x3f6 /* same as HD_STATUS but doesn't clear irq */ 30 31 /* remainder is shared between hd.c, ide.c, ide-cd.c, and the hdparm utility */ 32 33 /* Bits of HD_STATUS */ 34 #define ERR_STAT 0x01 35 #define INDEX_STAT 0x02 36 #define ECC_STAT 0x04 /* Corrected error */ 37 #define DRQ_STAT 0x08 38 #define SEEK_STAT 0x10 39 #define WRERR_STAT 0x20 40 #define READY_STAT 0x40 41 #define BUSY_STAT 0x80 42 43 /* Values for HD_COMMAND */ 44 #define WIN_RESTORE 0x10 45 #define WIN_READ 0x20 46 #define WIN_WRITE 0x30 47 #define WIN_VERIFY 0x40 48 #define WIN_FORMAT 0x50 49 #define WIN_INIT 0x60 50 #define WIN_SEEK 0x70 51 #define WIN_DIAGNOSE 0x90 52 #define WIN_SPECIFY 0x91 /* set drive geometry translation */ 53 #define WIN_SETIDLE1 0xE3 54 #define WIN_SETIDLE2 0x97 55 56 #define WIN_DOORLOCK 0xde /* lock door on removeable drives */ 57 #define WIN_DOORUNLOCK 0xdf /* unlock door on removeable drives */ 58 59 #define WIN_MULTREAD 0xC4 /* read sectors using multiple mode */ 60 #define WIN_MULTWRITE 0xC5 /* write sectors using multiple mode */ 61 #define WIN_SETMULT 0xC6 /* enable/disable multiple mode */ 62 #define WIN_IDENTIFY 0xEC /* ask drive to identify itself */ 63 #define WIN_SETFEATURES 0xEF /* set special drive features */ 64 #define WIN_READDMA 0xc8 /* read sectors using DMA transfers */ 65 #define WIN_WRITEDMA 0xca /* write sectors using DMA transfers */ 66 67 /* Additional drive command codes used by ATAPI devices. */ 68 #define WIN_PIDENTIFY 0xA1 /* identify ATAPI device */ 69 #define WIN_SRST 0x08 /* ATAPI soft reset command */ 70 #define WIN_PACKETCMD 0xa0 /* Send a packet command. */ 71 72 /* Bits for HD_ERROR */ 73 #define MARK_ERR 0x01 /* Bad address mark */ 74 #define TRK0_ERR 0x02 /* couldn't find track 0 */ 75 #define ABRT_ERR 0x04 /* Command aborted */ 76 #define ID_ERR 0x10 /* ID field not found */ 77 #define ECC_ERR 0x40 /* Uncorrectable ECC error */ 78 #define BBD_ERR 0x80 /* block marked bad */ 79 80 struct hd_geometry { 81 unsigned char heads; 82 unsigned char sectors; 83 unsigned short cylinders; 84 unsigned long start; 85 }; 86 87 /* hd/ide ctl's that pass (arg) ptrs to user space are numbered 0x30n/0x31n */ 88 #define HDIO_GETGEO 0x301 /* get device geometry */ 89 #define HDIO_GET_UNMASKINTR 0x302 /* get current unmask setting */ 90 #define HDIO_GET_MULTCOUNT 0x304 /* get current IDE blockmode setting */ 91 #define HDIO_GET_IDENTITY 0x307 /* get IDE identification info */ 92 #define HDIO_GET_KEEPSETTINGS 0x308 /* get keep-settings-on-reset flag */ 93 #define HDIO_GET_CHIPSET 0x309 /* get current interface type setting */ 94 #define HDIO_GET_NOWERR 0x30a /* get ignore-write-error flag */ 95 #define HDIO_GET_DMA 0x30b /* get use-dma flag */ 96 #define HDIO_DRIVE_CMD 0x31f /* execute a special drive command */ 97 98 /* hd/ide ctl's that pass (arg) non-ptr values are numbered 0x32n/0x33n */ 99 #define HDIO_SET_MULTCOUNT 0x321 /* set IDE blockmode */ 100 #define HDIO_SET_UNMASKINTR 0x322 /* permit other irqs during I/O */ 101 #define HDIO_SET_KEEPSETTINGS 0x323 /* keep ioctl settings on reset */ 102 #define HDIO_SET_CHIPSET 0x324 /* optimise driver for interface type */ 103 #define HDIO_SET_NOWERR 0x325 /* set ignore-write-error flag */ 104 #define HDIO_SET_DMA 0x326 /* set use-dma flag */ 105 106 /* structure returned by HDIO_GET_IDENTITY, as per ANSI ATA2 rev.2f spec */ 107 struct hd_driveid { 108 unsigned short config; /* lots of obsolete bit flags */ 109 unsigned short cyls; /* "physical" cyls */ 110 unsigned short reserved2; /* reserved (word 2) */ 111 unsigned short heads; /* "physical" heads */ 112 unsigned short track_bytes; /* unformatted bytes per track */ 113 unsigned short sector_bytes; /* unformatted bytes per sector */ 114 unsigned short sectors; /* "physical" sectors per track */ 115 unsigned short vendor0; /* vendor unique */ 116 unsigned short vendor1; /* vendor unique */ 117 unsigned short vendor2; /* vendor unique */ 118 unsigned char serial_no[20]; /* 0 = not_specified */ 119 unsigned short buf_type; 120 unsigned short buf_size; /* 512 byte increments; 0 = not_specified */ 121 unsigned short ecc_bytes; /* for r/w long cmds; 0 = not_specified */ 122 unsigned char fw_rev[8]; /* 0 = not_specified */ 123 unsigned char model[40]; /* 0 = not_specified */ 124 unsigned char max_multsect; /* 0=not_implemented */ 125 unsigned char vendor3; /* vendor unique */ 126 unsigned short dword_io; /* 0=not_implemented; 1=implemented */ 127 unsigned char vendor4; /* vendor unique */ 128 unsigned char capability; /* bits 0:DMA 1:LBA 2:IORDYsw 3:IORDYsup*/ 129 unsigned short reserved50; /* reserved (word 50) */ 130 unsigned char vendor5; /* vendor unique */ 131 unsigned char tPIO; /* 0=slow, 1=medium, 2=fast */ 132 unsigned char vendor6; /* vendor unique */ 133 unsigned char tDMA; /* 0=slow, 1=medium, 2=fast */ 134 unsigned short field_valid; /* bits 0:cur_ok 1:eide_ok */ 135 unsigned short cur_cyls; /* logical cylinders */ 136 unsigned short cur_heads; /* logical heads */ 137 unsigned short cur_sectors; /* logical sectors per track */ 138 unsigned short cur_capacity0; /* logical total sectors on drive */ 139 unsigned short cur_capacity1; /* (2 words, misaligned int) */ 140 unsigned char multsect; /* current multiple sector count */ 141 unsigned char multsect_valid; /* when (bit0==1) multsect is ok */ 142 unsigned int lba_capacity; /* total number of sectors */ 143 unsigned short dma_1word; /* single-word dma info */ 144 unsigned short dma_mword; /* multiple-word dma info */ 145 unsigned short eide_pio_modes; /* bits 0:mode3 1:mode4 */ 146 unsigned short eide_dma_min; /* min mword dma cycle time (ns) */ 147 unsigned short eide_dma_time; /* recommended mword dma cycle time (ns) */ 148 unsigned short eide_pio; /* min cycle time (ns), no IORDY */ 149 unsigned short eide_pio_iordy; /* min cycle time (ns), with IORDY */ 150 unsigned short reserved69; /* reserved (word 69) */ 151 unsigned short reserved70; /* reserved (word 70) */ 152 /* unsigned short reservedxx[57];*/ /* reserved (words 71-127) */ 153 /* unsigned short vendor7 [32];*/ /* vendor unique (words 128-159) */ 154 /* unsigned short reservedyy[96];*/ /* reserved (words 160-255) */ 155 }; 156 157 /* 158 * These routines are used for kernel command line parameters from main.c: 159 */ 160 #ifdef CONFIG_BLK_DEV_HD 161 void hd_setup(char *, int *); 162 #endif /* CONFIG_BLK_DEV_HD */ 163 #ifdef CONFIG_BLK_DEV_IDE 164 void ide_setup(char *); 165 #endif /* CONFIG_BLK_DEV_IDE */ 166 167 #endif /* _LINUX_HDREG_H */