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Annotation of funnyos/arch/testarm/dev/tacons.c, Revision 1.5

1.1       init        1: /*
1.5     ! init        2:  * $Id: tacons.c,v 1.4 2007/10/16 21:33:24 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>
1.4       init        9: #include <arch/testarm/dev/taconsvar.h>
1.1       init       10: #include <dev/fcons/fconsvar.h>
                     11: #include <libkern/printf.h>
                     12:
                     13: /*
                     14:  * testarm console support.
                     15:  */
                     16:
1.2       init       17: int    tacons_attach(struct device *, uint32_t, uint8_t);
                     18: char   tacons_getc(void *);
                     19: void   tacons_putc(void *, char);
                     20: void   tacons_early_putc(char);
1.1       init       21:
1.2       init       22: struct driver tacons_dr = {
                     23:        sizeof(struct tacons_dd),
                     24:        tacons_attach,
                     25:        NULL
                     26: };
1.1       init       27:
                     28:
                     29: int
1.2       init       30: tacons_attach(struct device *self, uint32_t loc, uint8_t flags)
1.1       init       31: {
1.2       init       32:        struct tacons_dd *ddp = self->dv_devdata;
1.4       init       33:        struct fcons_handle *fhp = &ddp->td_fh;
1.2       init       34:
                     35:        /* aquire bus handle from parent */
                     36:        ddp->td_bhp = self->dv_parent->dv_aux;
1.1       init       37:
1.2       init       38:        /* all reads/writes will use this addr; in testarm cons this is the same addr for getc/putc */
                     39:        ddp->td_ioaddr = loc;
                     40:
1.3       init       41:        /* we export struct fcons_handle */
                     42:        fhp->getc = tacons_getc;
                     43:        fhp->putc = tacons_putc;
1.4       init       44:
                     45:        /* give our dd to fcons_handle */
                     46:        fhp->fh_ownerdd = ddp;
1.2       init       47:
1.3       init       48:        self->dv_aux = fhp;
1.1       init       49:
                     50:        printf("testarm simple console (non-blocking, halt)\n");
                     51:
                     52:        return(0);
                     53: }
                     54:
                     55:
                     56: char
1.2       init       57: tacons_getc(void *ddp)
1.1       init       58: {
                     59:        /*
                     60:         * Get a character from the console.
                     61:         * Remember that this console is non-blocking.
                     62:         */
1.2       init       63:        struct tacons_dd *tdp = ddp;
                     64:
                     65:        return( bus_read_1(tdp->td_bhp, tdp->td_ioaddr) );
1.1       init       66: }
                     67:
                     68:
                     69: void
1.2       init       70: tacons_putc(void *ddp, char ch)
1.1       init       71: {
                     72:        /*
                     73:         * Write a character to the console.
                     74:         */
1.2       init       75:        struct tacons_dd *tdp = ddp;
1.1       init       76:
1.5     ! init       77:        bus_write_1(tdp->td_bhp, tdp->td_ioaddr, ch);
1.1       init       78: }
                     79:
1.2       init       80:
1.1       init       81: void
                     82: tacons_early_putc(char ch)
                     83: {
                     84:        /*
                     85:         * put a character on the unconfigured console device.
                     86:         * This will be used during devconfig until fcons/0 is configured.
                     87:         */
                     88:
                     89:        *(char *)(TACONS_REG_BASE + TACONS_OFF_IO) = ch;
                     90: }
                     91: