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Annotation of lucent/sys/src/9/pc/scsi.c, revision 1.1.1.1

1.1       root        1: #include "u.h"
                      2: #include "../port/lib.h"
                      3: #include "mem.h"
                      4: #include "dat.h"
                      5: #include "fns.h"
                      6: #include "io.h"
                      7: #include "../port/error.h"
                      8: 
                      9: /*
                     10:  * Known to devscsi.c.
                     11: int scsidebugs[8];
                     12: int scsiownid = CtlrID;
                     13:  */
                     14: 
                     15: void
                     16: initscsi(void)
                     17: {
                     18: }
                     19: 
                     20: /*
                     21:  * Quick hack. Need to do a better job of dynamic initialisation
                     22:  * for machines with peculiar memory/cache restictions.
                     23:  * Also, what about 16Mb address limit on the Adaptec?
                     24:  */
                     25: static ulong bufdatasize;
                     26: 
                     27: void
                     28: scsibufreset(ulong datasize)
                     29: {
                     30:        bufdatasize = datasize;
                     31: }
                     32: 
                     33: Scsibuf *
                     34: scsibuf(void)
                     35: {
                     36:        Scsibuf *b;
                     37: 
                     38:        b = smalloc(sizeof(*b));
                     39:        b->virt = smalloc(bufdatasize);
                     40:        b->phys = (void *)(PADDR(b->virt));
                     41:        return b;
                     42: }
                     43: 
                     44: void
                     45: scsifree(Scsibuf *b)
                     46: {
                     47:        free(b->virt);
                     48:        free(b);
                     49: }
                     50: 
                     51: extern int (*aha1542reset(void))(Scsi*, int);
                     52: extern int (*ultra14freset(void))(Scsi*, int);
                     53: 
                     54: static int (*exec)(Scsi*, int);
                     55: 
                     56: int
                     57: scsiexec(Scsi *p, int rflag)
                     58: {
                     59:        if(exec == 0)
                     60:                error(Enonexist);
                     61:        return (*exec)(p, rflag);
                     62: }
                     63: 
                     64: void
                     65: resetscsi(void)
                     66: {
                     67:        if(exec = aha1542reset())
                     68:                return;
                     69:        exec = ultra14freset();
                     70: }

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