#ifndef _LINUX_HDREG_H #define _LINUX_HDREG_H #include /* * This file contains some defines for the AT-hd-controller. * Various sources. Check out some definitions (see comments with * a ques). */ /* Hd controller regs. Ref: IBM AT Bios-listing */ /* For a second IDE interface, xor all addresses with 0x80 */ #define HD_DATA 0x1f0 /* _CTL when writing */ #define HD_ERROR 0x1f1 /* see err-bits */ #define HD_NSECTOR 0x1f2 /* nr of sectors to read/write */ #define HD_SECTOR 0x1f3 /* starting sector */ #define HD_LCYL 0x1f4 /* starting cylinder */ #define HD_HCYL 0x1f5 /* high byte of starting cyl */ #define HD_CURRENT 0x1f6 /* 101dhhhh , d=drive, hhhh=head */ #define HD_STATUS 0x1f7 /* see status-bits */ #define HD_FEATURE HD_ERROR /* same io address, read=error, write=feature */ #define HD_PRECOMP HD_FEATURE /* obsolete use of this port - predates IDE */ #define HD_COMMAND HD_STATUS /* same io address, read=status, write=cmd */ #define HD_CMD 0x3f6 /* used for resets */ #define HD_ALTSTATUS 0x3f6 /* same as HD_STATUS but doesn't clear irq */ /* Bits of HD_STATUS */ #define ERR_STAT 0x01 #define INDEX_STAT 0x02 #define ECC_STAT 0x04 /* Corrected error */ #define DRQ_STAT 0x08 #define SEEK_STAT 0x10 #define WRERR_STAT 0x20 #define READY_STAT 0x40 #define BUSY_STAT 0x80 /* Values for HD_COMMAND */ #define WIN_RESTORE 0x10 #define WIN_READ 0x20 #define WIN_WRITE 0x30 #define WIN_VERIFY 0x40 #define WIN_FORMAT 0x50 #define WIN_INIT 0x60 #define WIN_SEEK 0x70 #define WIN_DIAGNOSE 0x90 #define WIN_SPECIFY 0x91 #define WIN_SETIDLE1 0xE3 #define WIN_SETIDLE2 0x97 #define WIN_PIDENTIFY 0xA1 /* identify ATA-PI device */ #define WIN_MULTREAD 0xC4 /* read multiple sectors */ #define WIN_MULTWRITE 0xC5 /* write multiple sectors */ #define WIN_SETMULT 0xC6 /* enable read multiple */ #define WIN_IDENTIFY 0xEC /* ask drive to identify itself */ #define WIN_SETFEATURES 0xEF /* set special drive features */ /* Bits for HD_ERROR */ #define MARK_ERR 0x01 /* Bad address mark */ #define TRK0_ERR 0x02 /* couldn't find track 0 */ #define ABRT_ERR 0x04 /* Command aborted */ #define ID_ERR 0x10 /* ID field not found */ #define ECC_ERR 0x40 /* Uncorrectable ECC error */ #define BBD_ERR 0x80 /* block marked bad */ struct hd_geometry { unsigned char heads; unsigned char sectors; unsigned short cylinders; unsigned long start; }; /* hd/ide ctl's that pass (arg) ptrs to user space are numbered 0x30n/0x31n */ #define HDIO_GETGEO 0x301 /* get device geometry */ #define HDIO_REQ HDIO_GETGEO /* obsolete, use HDIO_GETGEO */ #define HDIO_GET_UNMASKINTR 0x302 /* get current unmask setting */ #define HDIO_GET_MULTCOUNT 0x304 /* get current IDE blockmode setting */ #define HDIO_GET_IDENTITY 0x307 /* get IDE identification info */ #define HDIO_GET_KEEPSETTINGS 0x308 /* get keep-settings-on-reset flag */ #define HDIO_GET_CHIPSET 0x309 /* get current interface type setting */ #define HDIO_DRIVE_CMD 0x31f /* execute a special drive command */ /* hd/ide ctl's that pass (arg) non-ptr values are numbered 0x32n/0x33n */ #define HDIO_SET_MULTCOUNT 0x321 /* set IDE blockmode */ #define HDIO_SET_UNMASKINTR 0x322 /* permit other irqs during I/O */ #define HDIO_SET_KEEPSETTINGS 0x323 /* keep ioctl settings on reset */ #define HDIO_SET_CHIPSET 0x324 /* optimise driver for interface type */ /* structure returned by HDIO_GET_IDENTITY, as per ANSI ATA2 rev.2f spec */ struct hd_driveid { unsigned short config; /* lots of obsolete bit flags */ unsigned short cyls; /* "physical" cyls */ unsigned short reserved2; /* reserved (word 2) */ unsigned short heads; /* "physical" heads */ unsigned short track_bytes; /* unformatted bytes per track */ unsigned short sector_bytes; /* unformatted bytes per sector */ unsigned short sectors; /* "physical" sectors per track */ unsigned short vendor0; /* vendor unique */ unsigned short vendor1; /* vendor unique */ unsigned short vendor2; /* vendor unique */ unsigned char serial_no[20]; /* 0 = not_specified */ unsigned short buf_type; unsigned short buf_size; /* 512 byte increments; 0 = not_specified */ unsigned short ecc_bytes; /* for r/w long cmds; 0 = not_specified */ unsigned char fw_rev[8]; /* 0 = not_specified */ unsigned char model[40]; /* 0 = not_specified */ unsigned char max_multsect; /* 0=not_implemented */ unsigned char vendor3; /* vendor unique */ unsigned short dword_io; /* 0=not_implemented; 1=implemented */ unsigned char vendor4; /* vendor unique */ unsigned char capability; /* bits 0:DMA 1:LBA 2:IORDYsw 3:IORDYsup*/ unsigned short reserved50; /* reserved (word 50) */ unsigned char vendor5; /* vendor unique */ unsigned char tPIO; /* 0=slow, 1=medium, 2=fast */ unsigned char vendor6; /* vendor unique */ unsigned char tDMA; /* 0=slow, 1=medium, 2=fast */ unsigned short field_valid; /* bits 0:cur_ok 1:eide_ok */ unsigned short cur_cyls; /* logical cylinders */ unsigned short cur_heads; /* logical heads */ unsigned short cur_sectors; /* logical sectors per track */ unsigned short cur_capacity0; /* logical total sectors on drive */ unsigned short cur_capacity1; /* (2 words, misaligned int) */ unsigned char multsect; /* current multiple sector count */ unsigned char multsect_valid; /* when (bit0==1) multsect is ok */ unsigned int lba_capacity; /* total number of sectors */ unsigned short dma_1word; /* single-word dma info */ unsigned short dma_mword; /* multiple-word dma info */ unsigned short eide_pio_modes; /* bits 0:mode3 1:mode4 */ unsigned short eide_dma_min; /* min mword dma cycle time (ns) */ unsigned short eide_dma_time; /* recommended mword dma cycle time (ns) */ unsigned short eide_pio; /* min cycle time (ns), no IORDY */ unsigned short eide_pio_iordy; /* min cycle time (ns), with IORDY */ unsigned short reserved69; /* reserved (word 69) */ unsigned short reserved70; /* reserved (word 70) */ /* unsigned short reservedxx[57];*/ /* reserved (words 71-127) */ /* unsigned short vendor7 [32];*/ /* vendor unique (words 128-159) */ /* unsigned short reservedyy[96];*/ /* reserved (words 160-255) */ }; /* * These routines are used for kernel command line parameters from main.c: */ #ifdef CONFIG_BLK_DEV_HD void hd_setup(char *, int *); #endif /* CONFIG_BLK_DEV_HD */ #ifdef CONFIG_BLK_DEV_IDE void ide_setup(char *, int *); void hda_setup(char *, int *); void hdb_setup(char *, int *); void hdc_setup(char *, int *); void hdd_setup(char *, int *); #endif /* CONFIG_BLK_DEV_IDE */ #endif /* _LINUX_HDREG_H */