vx32

Local 9vx git repository for patches.
git clone git://r-36.net/vx32
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sd.h (2656B)

      1 /*
      2  * Storage Device.
      3  */
      4 typedef struct SDev SDev;
      5 typedef struct SDifc SDifc;
      6 typedef struct SDpart SDpart;
      7 typedef struct SDperm SDperm;
      8 typedef struct SDreq SDreq;
      9 typedef struct SDunit SDunit;
     10 
     11 struct SDperm {
     12 	char*	name;
     13 	char*	user;
     14 	ulong	perm;
     15 };
     16 
     17 struct SDpart {
     18 	uvlong	start;
     19 	uvlong	end;
     20 	SDperm perm;
     21 	int	valid;
     22 	ulong	vers;
     23 };
     24 
     25 struct SDunit {
     26 	SDev*	dev;
     27 	int	subno;
     28 	uchar	inquiry[255];		/* format follows SCSI spec */
     29 	uchar	sense[18];		/* format follows SCSI spec */
     30 	SDperm perm;
     31 
     32 	QLock	ctl;
     33 	uvlong	sectors;
     34 	ulong	secsize;
     35 	SDpart*	part;			/* nil or array of size npart */
     36 	int	npart;
     37 	ulong	vers;
     38 	SDperm	ctlperm;
     39 
     40 	QLock	raw;			/* raw read or write in progress */
     41 	ulong	rawinuse;		/* really just a test-and-set */
     42 	int	state;
     43 	SDreq*	req;
     44 	SDperm	rawperm;
     45 };
     46 
     47 /*
     48  * Each controller is represented by a SDev.
     49  */
     50 struct SDev {
     51 	Ref	r;			/* Number of callers using device */
     52 	SDifc*	ifc;			/* pnp/legacy */
     53 	void*	ctlr;
     54 	int	idno;
     55 	char	name[8];
     56 	SDev*	next;
     57 
     58 	QLock lk;				/* enable/disable */
     59 	int	enabled;
     60 	int	nunit;			/* Number of units */
     61 	QLock	unitlock;		/* `Loading' of units */
     62 	int*	unitflg;		/* Unit flags */
     63 	SDunit**unit;
     64 };
     65 
     66 struct SDifc {
     67 	char*	name;
     68 
     69 	SDev*	(*pnp)(void);
     70 	SDev*	(*legacy)(int, int);
     71 	int	(*enable)(SDev*);
     72 	int	(*disable)(SDev*);
     73 
     74 	int	(*verify)(SDunit*);
     75 	int	(*online)(SDunit*);
     76 	int	(*rio)(SDreq*);
     77 	int	(*rctl)(SDunit*, char*, int);
     78 	int	(*wctl)(SDunit*, Cmdbuf*);
     79 
     80 	long	(*bio)(SDunit*, int, int, void*, long, uvlong);
     81 	SDev*	(*probe)(DevConf*);
     82 	void	(*clear)(SDev*);
     83 	char*	(*rtopctl)(SDev*, char*, char*);
     84 	int	(*wtopctl)(SDev*, Cmdbuf*);
     85 };
     86 
     87 struct SDreq {
     88 	SDunit*	unit;
     89 	int	lun;
     90 	int	write;
     91 	uchar	cmd[16];
     92 	int	clen;
     93 	void*	data;
     94 	int	dlen;
     95 
     96 	int	flags;
     97 
     98 	int	status;
     99 	long	rlen;
    100 	uchar	sense[256];
    101 };
    102 
    103 enum {
    104 	SDnosense	= 0x00000001,
    105 	SDvalidsense	= 0x00010000,
    106 };
    107 
    108 enum {
    109 	SDretry		= -5,		/* internal to controllers */
    110 	SDmalloc	= -4,
    111 	SDeio		= -3,
    112 	SDtimeout	= -2,
    113 	SDnostatus	= -1,
    114 
    115 	SDok		= 0,
    116 
    117 	SDcheck		= 0x02,		/* check condition */
    118 	SDbusy		= 0x08,		/* busy */
    119 
    120 	SDmaxio		= 2048*1024,
    121 	SDnpart		= 16,
    122 };
    123 
    124 #define sdmalloc(n)	malloc(n)
    125 #define sdfree(p)	free(p)
    126 
    127 /* devsd.c */
    128 extern void sdadddevs(SDev*);
    129 extern int sdsetsense(SDreq*, int, int, int, int);
    130 extern int sdmodesense(SDreq*, uchar*, void*, int);
    131 extern int sdfakescsi(SDreq*, void*, int);
    132 extern void sdaddpart(SDunit*, char*, uvlong, uvlong);
    133 extern SDpart* sdfindpart(SDunit*, char*);
    134 
    135 /* sdscsi.c */
    136 extern int scsiverify(SDunit*);
    137 extern int scsionline(SDunit*);
    138 extern long scsibio(SDunit*, int, int, void*, long, uvlong);
    139 extern SDev* scsiid(SDev*, SDifc*);
    140 
    141 /* part.c */
    142 extern void partition(SDunit*);