2000/0607/alphapc/sd.h (diff list | history)

alphapc/sd.h on 2000/0515
2000/0515		/* * Storage Device. */ typedef struct SDev SDev; typedef struct SDifc SDifc; typedef struct SDpart SDpart; typedef struct SDreq SDreq; typedef struct SDunit SDunit; typedef struct SDpart { ulong start; ulong end; char name[NAMELEN]; char user[NAMELEN]; ulong perm; int valid; int nopen; /* of this partition */ } SDpart; typedef struct SDunit { SDev* dev; int subno; uchar inquiry[256]; /* format follows SCSI spec */ char name[NAMELEN]; Rendez rendez; QLock ctl; ulong sectors; ulong secsize; SDpart* part; int npart; /* of valid partitions */ int nopen; /* of partitions on this unit */ int changed;
2000/0607		Lock rawinuse; /* really just a test-and-set */
2000/0515		int state; SDreq* req; } SDunit; typedef struct SDev { SDifc* ifc; /* pnp/legacy */ void *ctlr; int idno; char name[NAMELEN]; int index; /* into unit space */ int nunit; SDev* next; QLock; /* enable/disable */ int enabled; } SDev; typedef struct SDifc { char* name; SDev* (*pnp)(void); SDev* (*legacy)(int, int); SDev* (*id)(SDev*); int (*enable)(SDev*); int (*disable)(SDev*); int (*verify)(SDunit*); int (*online)(SDunit*); int (*rio)(SDreq*); int (*rctl)(SDunit*, char*, int); int (*wctl)(SDunit*, Cmdbuf*); long (*bio)(SDunit*, int, int, void*, long, long); } SDifc; typedef struct SDreq { SDunit* unit; int lun; int write; uchar cmd[16]; int clen; void* data; int dlen; int flags; int status; long rlen; uchar sense[256]; } SDreq; enum { SDnosense = 0x00000001, SDvalidsense = 0x00010000, }; enum {
2000/0607		SDretry = -5, /* internal to controllers */
2000/0515		SDmalloc = -4, SDeio = -3, SDtimeout = -2, SDnostatus = -1, SDok = 0, SDcheck = 0x02, /* check condition */ SDbusy = 0x08, /* busy */ SDmaxio = 2048*1024, SDnpart = 16, }; #define sdmalloc(n) malloc(n) #define sdfree(p) free(p) /* sdscsi.c */ extern int scsiverify(SDunit*); extern int scsionline(SDunit*); extern long scsibio(SDunit*, int, int, void*, long, long); extern SDev* scsiid(SDev*, SDifc*);