diff options
Diffstat (limited to 'sys/scsi/scsiconf.h')
| -rw-r--r-- | sys/scsi/scsiconf.h | 183 |
1 files changed, 77 insertions, 106 deletions
diff --git a/sys/scsi/scsiconf.h b/sys/scsi/scsiconf.h index 3899983..1a9765e 100644 --- a/sys/scsi/scsiconf.h +++ b/sys/scsi/scsiconf.h @@ -14,7 +14,7 @@ * * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992 * - * $Id: scsiconf.h,v 1.23 1995/04/23 07:47:12 bde Exp $ + * $Id: scsiconf.h,v 1.24 1995/04/23 22:07:51 gibbs Exp $ */ #ifndef SCSI_SCSICONF_H #define SCSI_SCSICONF_H 1 @@ -31,46 +31,6 @@ typedef unsigned char u_int8; #include <scsi/scsi_all.h> #include <scsi/scsi_driver.h> -/* Minor number fields: - * - * NON-FIXED SCSI devices: - * - * ???? ???? ???? ???N MMMMMMMM mmmmmmmm - * - * ?: Don't know; those bits didn't use to exist, currently always 0. - * N: New style device: must be zero. - * M: Major device number. - * m: old style minor device number. - * - * FIXED SCSI devices: - * - * ???? SBBB LLLI IIIN MMMMMMMM mmmmmmmm - * - * ?: Not used yet. - * S: "Super" device; reserved for things like resetting the SCSI bus. - * B: Scsi bus - * L: Logical unit - * I: Scsi target (XXX: Why 16? Why that many in scsiconf.h?) - * N: New style device; must be one. - * M: Major device number - * m: Old style minor device number. - */ - -#define SCSI_SUPER(DEV) (((DEV) & 0x08000000) >> 27) -#define SCSI_MKSUPER(DEV) ((DEV) | 0x08000000) - -#define SCSI_BUS(DEV) (((DEV) & 0x07000000) >> 24) -#define SCSI_LUN(DEV) (((DEV) & 0x00E00000) >> 21) -#define SCSI_ID(DEV) (((DEV) & 0x001E0000) >> 17) -#define SCSI_FIXED(DEV) (((DEV) & 0x00010000) >> 16) - - -#define SCSI_MKDEV(B, L, I) ( \ - ((B) << 24) | \ - ((L) << 21) | \ - ((I) << 17) | \ - ( 1 << 16) ) - /* * The following documentation tries to describe the relationship between the * various structures defined in this file: @@ -143,11 +103,11 @@ struct scsi_adapter * driver has its own definition for it. */ struct scsi_data; - struct scsi_link; /* scsi_link refers to scsi_device and vice-versa */ struct scsi_xfer; struct proc; +struct buf; /* * These entry points are called by the low-end drivers to get services from @@ -162,21 +122,21 @@ struct proc; struct scsi_device { -/* 4*/ errval (*err_handler)(struct scsi_xfer *xs); /* return -1 to say - * err processing complete */ -/* 8*/ void (*start)(u_int32 unit, u_int32 flags); +/* 4*/ errval (*err_handler)(struct scsi_xfer *xs); /* return -1 to say + * err processing complete */ +/* 8*/ void (*start)(u_int32 unit, u_int32 flags); /* 12*/ int32 (*async)(); /* 16*/ int32 (*done)(); /* returns -1 to say done processing complete */ /* 20*/ char *name; /* name of device type */ /* 24*/ u_int32 flags; /* device type dependent flags */ /* 32*/ int32 spare[2]; -/* 36*/ int32 link_flags; /* Flags OR'd into sc_link at attach time */ +/* 36*/ int32 link_flags; /* Flags OR'd into sc_link at attach time */ /* 40*/ errval (*attach)(struct scsi_link *sc_link); /* 44*/ char *desc; /* Description of device */ /* 48*/ int (*open)(dev_t dev, int flags, int fmt, struct proc *p); /* 52*/ int sizeof_scsi_data; -/* 56*/ int type; /* Type of device this supports */ +/* 56*/ int type; /* Type of device this supports */ /* 60*/ int (*getunit)(dev_t dev); /* 64*/ dev_t (*setunit)(dev_t dev, int unit); @@ -209,32 +169,26 @@ struct scsi_device /* SCSI_DEVICE_ENTRIES: A macro to generate all the entry points from the * name. */ -#define SCSI_DEVICE_ENTRIES(NAME) \ -errval NAME##attach(struct scsi_link *sc_link); \ -extern struct scsi_device NAME##_switch; \ -void NAME##init(void) \ -{ \ - scsi_device_register(&NAME##_switch); \ -} \ -int NAME##open(dev_t dev, int flags, int fmt, struct proc *p) \ -{ \ - return scsi_open(dev, flags, fmt, p, &NAME##_switch); \ -} \ -int NAME##ioctl(dev_t dev, int cmd, caddr_t addr, int flag, struct proc *p) \ -{ \ - return scsi_ioctl(dev, cmd, addr, flag, p, &NAME##_switch); \ -} \ -int NAME##close(dev_t dev, int flag, int fmt, struct proc *p) \ -{ \ - return scsi_close(dev, flag, fmt, p, &NAME##_switch); \ -} \ -void NAME##minphys(struct buf *bp) \ -{ \ - scsi_minphys(bp, &NAME##_switch); \ +#define SCSI_DEVICE_ENTRIES(NAME) \ +errval NAME##attach(struct scsi_link *sc_link); \ +extern struct scsi_device NAME##_switch; \ +void NAME##init(void) { \ + scsi_device_register(&NAME##_switch); \ +} \ +int NAME##open(dev_t dev, int flags, int fmt, struct proc *p) { \ + return scsi_open(dev, flags, fmt, p, &NAME##_switch); \ +} \ +int NAME##ioctl(dev_t dev, int cmd, caddr_t addr, int flag, struct proc *p) { \ + return scsi_ioctl(dev, cmd, addr, flag, p, &NAME##_switch); \ } \ -void NAME##strategy(struct buf *bp) \ -{ \ - scsi_strategy(bp, &NAME##_switch); \ +int NAME##close(dev_t dev, int flag, int fmt, struct proc *p) { \ + return scsi_close(dev, flag, fmt, p, &NAME##_switch); \ +} \ +void NAME##minphys(struct buf *bp) { \ + scsi_minphys(bp, &NAME##_switch); \ +} \ +void NAME##strategy(struct buf *bp) { \ + scsi_strategy(bp, &NAME##_switch); \ } #ifdef KERNEL @@ -348,6 +302,11 @@ struct scsi_link * adapter driver. * XXX-HA And I added the "supports residuals properly" flag that ALSO goes * in an adapter structure. I figure I'll fix both at once. + * + * XXX SDEV_OPEN is used for two things: To prevent more than one + * open and to make unit attentions errors be logged on the console. + * These should be split up; I'm adding SDEV_IS_OPEN to enforce one + * open only. */ #define SDEV_MEDIA_LOADED 0x0001 /* device figures are still valid */ @@ -359,6 +318,7 @@ struct scsi_link #define SDEV_BOOTVERBOSE 0x0200 /* be noisy during boot */ #define SDEV_RESIDS_WORK 0x0400 /* XXX-HA: Residuals work */ #define SDEV_TARGET_OPS 0x0800 /* XXX-HA: Supports target ops */ +#define SDEV_IS_OPEN 0x1000 /* at least 1 open session */ /* * One of these is allocated and filled in for each scsi bus. @@ -448,8 +408,6 @@ struct scsi_xfer #ifdef KERNEL void *extend_get(struct extend_array *ea, int index); -char * scsi_type_long_name(int type); -char * scsi_type_name(int type); void scsi_attachdevs __P((struct scsi_link *sc_link_proto)); struct scsi_xfer *get_xs( struct scsi_link *sc_link, u_int32 flags); void free_xs(struct scsi_xfer *xs, struct scsi_link *sc_link,u_int32 flags); @@ -516,6 +474,10 @@ void scsi_configure_finish __P((void)); #define SCSI_EXTERNALLEN (sizeof(struct scsi_link)) #ifdef NEW_SCSICONF + +/* XXX This belongs in a tape file. + */ + /********************************************************************** from the scsi2 spec Value Tracks Density(bpi) Code Type Reference Note @@ -578,43 +540,52 @@ void scsi_configure_finish __P((void)); #define DAT_1 0x13 #endif /* NEW_SCSICONF */ -/* Macros for getting and setting the unit numbers in the original - * (not fixed device name) device numbers. +/* XXX (dufault@hda.com) This is used only by "su" and "sctarg". + * The minor number field conflicts with the disk slice code, + * and so it is tough to access the disks through the "su" device. */ -#define SH0_UNIT(DEV) (minor(DEV)&0xFF) /* 8 bit unit */ -#define SH0SETUNIT(DEV, U) makedev(major(DEV), (U)) - -#define SH3_UNIT(DEV) ((minor(DEV)&0xF8) >> 3) /* 5 bit unit */ -#define SH3SETUNIT(DEV, U) makedev(major(DEV), ((U) << 3)) - -#define SH4_UNIT(DEV) ((minor(DEV)&0xF0) >> 4) /* 4 bit unit. */ -#define SH4SETUNIT(DEV, U) makedev(major(DEV), ((U) << 4)) - -#define CDUNITSHIFT 3 -#define CDUNIT(DEV) SH3_UNIT(DEV) -#define CDSETUNIT(DEV, U) SH3SETUNIT((DEV), (U)) - -#define CHUNIT(DEV) SH4_UNIT(DEV) -#define CHSETUNIT(DEV, U) SH4SETUNIT((DEV), (U)) - -#define STUNIT(DEV) SH4_UNIT(DEV) -#define STSETUNIT(DEV, U) SH4SETUNIT((DEV), (U)) -#define UKUNIT(DEV) SH0_UNIT(DEV) -#define UKSETUNIT(DEV, U) SH0SETUNIT((DEV), (U)) - -/* Build an old style device number (unit encoded in the minor number) - * from a base old one (no flag bits) and a full new one - * (BUS, LUN, TARG in the minor number, and flag bits). +/* Device number fields: + * + * NON-FIXED SCSI devices: + * + * ?FC? ???? ???? ???? MMMMMMMM mmmmmmmm + * + * F: Fixed device (nexus in number): must be 0. + * C: Control device; only user mode ioctl is supported. + * ?: Don't know; those bits didn't use to exist, currently always 0. + * M: Major device number. + * m: Old style minor device number. + * + * FIXED SCSI devices: * - * OLDDEV has the major number and device unit only. It was constructed - * at attach time and is stored in the scsi_link structure. + * XXX Conflicts with the slice code. Maybe the slice code can be + * changed to respect the F bit? * - * NEWDEV can have whatever in it, but only the old control flags and the - * super bit are present. IT CAN'T HAVE ANY UNIT INFORMATION or you'll - * wind up with the wrong unit. + * ?FC? ?BBB TTTT ?LLL MMMMMMMM mmmmmmmm + * + * F: Fixed device (nexus in number); must be 1. + * C: Control device; only user mode ioctl is supported. + * B: SCSI bus + * T: SCSI target ID + * L: Logical unit + * M: Major device number + * m: Old style minor device number. */ -#define OLD_DEV(NEWDEV, OLDDEV) ((OLDDEV) | ((NEWDEV) & 0x080000FF)) + +#define SCSI_FIXED(DEV) (((DEV) & SCSI_FIXED_MASK)) +#define SCSI_FIXED_MASK 0x40000000 +#define SCSI_CONTROL(DEV) (((DEV) & 0x20000000)) + +#define SCSI_BUS(DEV) (((DEV) & 0x07000000) >> 24) +#define SCSI_ID(DEV) (((DEV) & 0x00F00000) >> 20) +#define SCSI_LUN(DEV) (((DEV) & 0x00070000) >> 16) + +#define SCSI_MKFIXED(B, T, L) ( \ + ((B) << 24) | \ + ((T) << 20) | \ + ((L) << 16) | \ + SCSI_FIXED_MASK ) #endif /*SCSI_SCSICONF_H*/ /* END OF FILE */ |
