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[/] [or1k/] [trunk/] [uclinux/] [uClinux-2.0.x/] [arch/] [sparc/] [prom/] [devops.c] - Rev 1765
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/* $Id: devops.c,v 1.1.1.1 2001-09-10 07:44:03 simons Exp $ * devops.c: Device operations using the PROM. * * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) */ #include <asm/openprom.h> #include <asm/oplib.h> /* Open the device described by the string 'dstr'. Returns the handle * to that device used for subsequent operations on that device. * Returns -1 on failure. */ int prom_devopen(char *dstr) { int handle; switch(prom_vers) { case PROM_V0: handle = (*(romvec->pv_v0devops.v0_devopen))(dstr); if(handle == 0) return -1; return handle; break; case PROM_V2: case PROM_V3: case PROM_P1275: handle = (*(romvec->pv_v2devops.v2_dev_open))(dstr); return handle; break; case PROM_AP1000: break; }; return -1; } /* Close the device described by device handle 'dhandle'. */ void prom_close(int dhandle) { switch(prom_vers) { case PROM_V0: (*(romvec->pv_v0devops.v0_devclose))(dhandle); return; case PROM_V2: case PROM_V3: case PROM_P1275: (*(romvec->pv_v2devops.v2_dev_close))(dhandle); return; case PROM_AP1000: return; }; return; } /* Seek to specified location described by 'seekhi' and 'seeklo' * for device 'dhandle'. */ void prom_seek(int dhandle, unsigned int seekhi, unsigned int seeklo) { switch(prom_vers) { case PROM_V0: (*(romvec->pv_v0devops.v0_seekdev))(dhandle, seekhi, seeklo); break; case PROM_V2: case PROM_V3: case PROM_P1275: (*(romvec->pv_v2devops.v2_dev_seek))(dhandle, seekhi, seeklo); break; case PROM_AP1000: break; }; return; }