Return to tacons.c CVS log

Up to [local] / funnyos / arch / testarm / dev

Annotation of funnyos/arch/testarm/dev/tacons.c, Revision 1.3

1.1       init        1: /*
1.3     ! init        2:  * $Id: tacons.c,v 1.2 2007/10/16 20:28:24 init Exp $
1.1       init        3:  */
                      4: #include <sys/types.h>
                      5: #include <sys/device.h>
                      6: #include <sys/bus.h>
1.2       init        7:
1.1       init        8: #include <arch/testarm/dev/taconsreg.h>
                      9: #include <dev/fcons/fconsvar.h>
                     10: #include <libkern/printf.h>
                     11:
                     12: /*
                     13:  * testarm console support.
                     14:  */
                     15:
1.2       init       16: int    tacons_attach(struct device *, uint32_t, uint8_t);
                     17: char   tacons_getc(void *);
                     18: void   tacons_putc(void *, char);
                     19: void   tacons_early_putc(char);
1.1       init       20:
1.2       init       21: struct driver tacons_dr = {
                     22:        sizeof(struct tacons_dd),
                     23:        tacons_attach,
                     24:        NULL
                     25: };
1.1       init       26:
                     27:
                     28: int
1.2       init       29: tacons_attach(struct device *self, uint32_t loc, uint8_t flags)
1.1       init       30: {
1.2       init       31:        struct tacons_dd *ddp = self->dv_devdata;
1.3     ! init       32:        struct fcons_handle *fhp = &ddp->td_consops;
1.2       init       33:
                     34:        /* aquire bus handle from parent */
                     35:        ddp->td_bhp = self->dv_parent->dv_aux;
1.1       init       36:
1.2       init       37:        /* all reads/writes will use this addr; in testarm cons this is the same addr for getc/putc */
                     38:        ddp->td_ioaddr = loc;
                     39:
1.3     ! init       40:        /* we export struct fcons_handle */
        !            41:        fhp->getc = tacons_getc;
        !            42:        fhp->putc = tacons_putc;
1.2       init       43:
1.3     ! init       44:        self->dv_aux = fhp;
1.1       init       45:
                     46:        printf("testarm simple console (non-blocking, halt)\n");
                     47:
                     48:        return(0);
                     49: }
                     50:
                     51:
                     52: char
1.2       init       53: tacons_getc(void *ddp)
1.1       init       54: {
                     55:        /*
                     56:         * Get a character from the console.
                     57:         * Remember that this console is non-blocking.
                     58:         */
1.2       init       59:        struct tacons_dd *tdp = ddp;
                     60:
                     61:        return( bus_read_1(tdp->td_bhp, tdp->td_ioaddr) );
1.1       init       62: }
                     63:
                     64:
                     65: void
1.2       init       66: tacons_putc(void *ddp, char ch)
1.1       init       67: {
                     68:        /*
                     69:         * Write a character to the console.
                     70:         */
1.2       init       71:        struct tacons_dd *tdp = ddp;
1.1       init       72:
1.2       init       73:        return( bus_write_1(tdp->td_dhp, tdp->td_ioaddr, ch) );
1.1       init       74: }
                     75:
1.2       init       76:
1.1       init       77: void
                     78: tacons_early_putc(char ch)
                     79: {
                     80:        /*
                     81:         * put a character on the unconfigured console device.
                     82:         * This will be used during devconfig until fcons/0 is configured.
                     83:         */
                     84:
                     85:        *(char *)(TACONS_REG_BASE + TACONS_OFF_IO) = ch;
                     86: }
                     87: