ref: 909323e92a4e694bff5908e500d8655ac1bbd932
dir: /sys/src/9/port/sd.h/
/* * Storage Device. */ typedef struct SDev SDev; typedef struct SDfile SDfile; typedef struct SDifc SDifc; typedef struct SDio SDio; typedef struct SDpart SDpart; typedef struct SDperm SDperm; typedef struct SDreq SDreq; typedef struct SDunit SDunit; struct SDperm { char* name; char* user; ulong perm; }; struct SDpart { uvlong start; uvlong end; SDperm; int valid; ulong vers; }; typedef long SDrw(SDunit*, Chan*, void*, long, vlong); struct SDfile { SDperm; SDrw *r; SDrw *w; }; struct SDunit { SDev* dev; int subno; uchar inquiry[255]; /* format follows SCSI spec */ uchar sense[18]; /* format follows SCSI spec */ uchar rsense[18]; /* support seperate rq sense and inline return */ uchar haversense; SDperm; QLock ctl; uvlong sectors; ulong secsize; SDpart* part; /* nil or array of size npart */ int npart; ulong vers; SDperm ctlperm; QLock raw; /* raw read or write in progress */ ulong rawinuse; /* really just a test-and-set */ int state; SDreq* req; SDperm rawperm; SDfile efile[5]; int nefile; }; /* * Each controller is represented by a SDev. */ struct SDev { Ref r; /* Number of callers using device */ SDifc* ifc; /* pnp/legacy */ void* ctlr; int idno; char name[8]; SDev* next; QLock; /* enable/disable */ int enabled; int nunit; /* Number of units */ QLock unitlock; /* `Loading' of units */ int* unitflg; /* Unit flags */ SDunit**unit; }; struct SDifc { char* name; SDev* (*pnp)(void); SDev* (*xxlegacy)(int, int); /* unused. remove me */ 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, uvlong); SDev* (*probe)(DevConf*); void (*clear)(SDev*); char* (*rtopctl)(SDev*, char*, char*); int (*wtopctl)(SDev*, Cmdbuf*); int (*ataio)(SDreq*); }; struct SDreq { SDunit* unit; int lun; char write; char proto; char ataproto; uchar cmd[0x20]; int clen; void* data; int dlen; int flags; int status; long rlen; uchar sense[32]; }; enum { SDnosense = 0x00000001, SDvalidsense = 0x00010000, }; enum { SDretry = -5, /* internal to controllers */ SDmalloc = -4, SDeio = -3, SDtimeout = -2, SDnostatus = -1, SDok = 0, SDcheck = 0x02, /* check condition */ SDbusy = 0x08, /* busy */ SDmaxio = 2048*1024, SDnpart = 16, SDread = 0, SDwrite, SData = 1, SDcdb = 2, }; /* * Avoid extra copying by making sd buffers page-aligned for DMA. */ #define sdmalloc(n) mallocalign(n, BY2PG, 0, 0) #define sdfree(p) free(p) /* * mmc/sd/sdio host controller interface */ struct SDio { char *name; int (*init)(void); void (*enable)(void); int (*inquiry)(char*, int); int (*cmd)(u32int, u32int, u32int*); void (*iosetup)(int, void*, int, int); void (*io)(int, uchar*, int); char highspeed; char nomultiwrite; /* quirk for usdhc */ }; extern SDio sdio; /* devsd.c */ extern void sdadddevs(SDev*); extern int sdsetsense(SDreq*, int, int, int, int); extern int sdfakescsi(SDreq*); extern int sdfakescsirw(SDreq*, uvlong*, int*, int*); extern int sdaddfile(SDunit*, char*, int, char*, SDrw*, SDrw*); /* sdscsi.c */ extern int scsiverify(SDunit*); extern int scsionline(SDunit*); extern long scsibio(SDunit*, int, int, void*, long, uvlong);