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/*
* 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);
};
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);
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