From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- arch/sparc/prom/devops.c | 89 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) create mode 100644 arch/sparc/prom/devops.c (limited to 'arch/sparc/prom/devops.c') diff --git a/arch/sparc/prom/devops.c b/arch/sparc/prom/devops.c new file mode 100644 index 000000000000..61919b54f6cc --- /dev/null +++ b/arch/sparc/prom/devops.c @@ -0,0 +1,89 @@ +/* $Id: devops.c,v 1.13 2000/08/26 02:38:03 anton Exp $ + * devops.c: Device operations using the PROM. + * + * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) + */ +#include +#include +#include + +#include +#include + +extern void restore_current(void); + +/* 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; + unsigned long flags; + spin_lock_irqsave(&prom_lock, flags); + switch(prom_vers) { + case PROM_V0: + handle = (*(romvec->pv_v0devops.v0_devopen))(dstr); + if(handle == 0) handle = -1; + break; + case PROM_V2: + case PROM_V3: + handle = (*(romvec->pv_v2devops.v2_dev_open))(dstr); + break; + default: + handle = -1; + break; + }; + restore_current(); + spin_unlock_irqrestore(&prom_lock, flags); + + return handle; +} + +/* Close the device described by device handle 'dhandle'. */ +int +prom_devclose(int dhandle) +{ + unsigned long flags; + spin_lock_irqsave(&prom_lock, flags); + switch(prom_vers) { + case PROM_V0: + (*(romvec->pv_v0devops.v0_devclose))(dhandle); + break; + case PROM_V2: + case PROM_V3: + (*(romvec->pv_v2devops.v2_dev_close))(dhandle); + break; + default: + break; + }; + restore_current(); + spin_unlock_irqrestore(&prom_lock, flags); + return 0; +} + +/* Seek to specified location described by 'seekhi' and 'seeklo' + * for device 'dhandle'. + */ +void +prom_seek(int dhandle, unsigned int seekhi, unsigned int seeklo) +{ + unsigned long flags; + spin_lock_irqsave(&prom_lock, flags); + switch(prom_vers) { + case PROM_V0: + (*(romvec->pv_v0devops.v0_seekdev))(dhandle, seekhi, seeklo); + break; + case PROM_V2: + case PROM_V3: + (*(romvec->pv_v2devops.v2_dev_seek))(dhandle, seekhi, seeklo); + break; + default: + break; + }; + restore_current(); + spin_unlock_irqrestore(&prom_lock, flags); + + return; +} -- cgit v1.2.1