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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [arch/] [sparc/] [prom/] [devops.c] - Blame information for rev 1777

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Line No. Rev Author Line
1 1624 jcastillo 
/* $Id: devops.c,v 1.1 2005-12-20 09:49:32 jcastillo Exp $
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 * devops.c:  Device operations using the PROM.
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 *
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 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
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 */
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#include <asm/openprom.h>
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#include <asm/oplib.h>
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/* Open the device described by the string 'dstr'.  Returns the handle
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 * to that device used for subsequent operations on that device.
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 * Returns -1 on failure.
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 */
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int
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prom_devopen(char *dstr)
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{
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        int handle;
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        switch(prom_vers) {
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        case PROM_V0:
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                handle = (*(romvec->pv_v0devops.v0_devopen))(dstr);
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                if(handle == 0) return -1;
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                return handle;
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                break;
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        case PROM_V2:
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        case PROM_V3:
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        case PROM_P1275:
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                handle = (*(romvec->pv_v2devops.v2_dev_open))(dstr);
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                return handle;
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                break;
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        case PROM_AP1000:
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                break;
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        };
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        return -1;
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}
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/* Close the device described by device handle 'dhandle'. */
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void
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prom_close(int dhandle)
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{
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        switch(prom_vers) {
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        case PROM_V0:
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                (*(romvec->pv_v0devops.v0_devclose))(dhandle);
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                return;
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        case PROM_V2:
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        case PROM_V3:
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        case PROM_P1275:
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                (*(romvec->pv_v2devops.v2_dev_close))(dhandle);
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                return;
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        case PROM_AP1000:
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                return;
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        };
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        return;
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}
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/* Seek to specified location described by 'seekhi' and 'seeklo'
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 * for device 'dhandle'.
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 */
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void
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prom_seek(int dhandle, unsigned int seekhi, unsigned int seeklo)
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{
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        switch(prom_vers) {
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        case PROM_V0:
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                (*(romvec->pv_v0devops.v0_seekdev))(dhandle, seekhi, seeklo);
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                break;
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        case PROM_V2:
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        case PROM_V3:
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        case PROM_P1275:
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                (*(romvec->pv_v2devops.v2_dev_seek))(dhandle, seekhi, seeklo);
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                break;
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        case PROM_AP1000:
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                break;
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        };
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        return;
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}

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