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/*
* System Abstraction Layer (SAL) interface routines.
*
* Copyright (C) 1998, 1999 Hewlett-Packard Co
* Copyright (C) 1998, 1999 David Mosberger-Tang <davidm@hpl.hp.com>
* Copyright (C) 1999 VA Linux Systems
* Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <asm/page.h>
#include <asm/sal.h>
#include <asm/pal.h>
#define SAL_DEBUG
spinlock_t sal_lock = SPIN_LOCK_UNLOCKED;
static struct {
void *addr; /* function entry point */
void *gpval; /* gp value to use */
} pdesc;
static long
default_handler (void)
{
return -1;
}
ia64_sal_handler ia64_sal = (ia64_sal_handler) default_handler;
const char *
ia64_sal_strerror (long status)
{
const char *str;
switch (status) {
case 0: str = "Call completed without error"; break;
case 1: str = "Effect a warm boot of the system to complete "
"the update"; break;
case -1: str = "Not implemented"; break;
case -2: str = "Invalid argument"; break;
case -3: str = "Call completed with error"; break;
case -4: str = "Virtual address not registered"; break;
case -5: str = "No information available"; break;
case -6: str = "Insufficient space to add the entry"; break;
case -7: str = "Invalid entry_addr value"; break;
case -8: str = "Invalid interrupt vector"; break;
case -9: str = "Requested memory not available"; break;
case -10: str = "Unable to write to the NVM device"; break;
case -11: str = "Invalid partition type specified"; break;
case -12: str = "Invalid NVM_Object id specified"; break;
case -13: str = "NVM_Object already has the maximum number "
"of partitions"; break;
case -14: str = "Insufficient space in partition for the "
"requested write sub-function"; break;
case -15: str = "Insufficient data buffer space for the "
"requested read record sub-function"; break;
case -16: str = "Scratch buffer required for the write/delete "
"sub-function"; break;
case -17: str = "Insufficient space in the NVM_Object for the "
"requested create sub-function"; break;
case -18: str = "Invalid value specified in the partition_rec "
"argument"; break;
case -19: str = "Record oriented I/O not supported for this "
"partition"; break;
case -20: str = "Bad format of record to be written or "
"required keyword variable not "
"specified"; break;
default: str = "Unknown SAL status code"; break;
}
return str;
}
static void __init
ia64_sal_handler_init (void *entry_point, void *gpval)
{
/* fill in the SAL procedure descriptor and point ia64_sal to it: */
pdesc.addr = entry_point;
pdesc.gpval = gpval;
ia64_sal = (ia64_sal_handler) &pdesc;
}
void __init
ia64_sal_init (struct ia64_sal_systab *systab)
{
unsigned long min, max;
char *p;
struct ia64_sal_desc_entry_point *ep;
int i;
if (!systab) {
printk("Hmm, no SAL System Table.\n");
return;
}
if (strncmp(systab->signature, "SST_", 4) != 0)
printk("bad signature in system table!");
printk("SAL v%u.%02u: ia32bios=%s, oem=%.32s, product=%.32s\n",
systab->sal_rev_major, systab->sal_rev_minor,
systab->ia32_bios_present ? "present" : "absent",
systab->oem_id, systab->product_id);
min = ~0UL;
max = 0;
p = (char *) (systab + 1);
for (i = 0; i < systab->entry_count; i++) {
/*
* The first byte of each entry type contains the type desciptor.
*/
switch (*p) {
case SAL_DESC_ENTRY_POINT:
ep = (struct ia64_sal_desc_entry_point *) p;
#ifdef SAL_DEBUG
printk("sal[%d] - entry: pal_proc=0x%lx, sal_proc=0x%lx\n",
i, ep->pal_proc, ep->sal_proc);
#endif
ia64_pal_handler_init(__va(ep->pal_proc));
ia64_sal_handler_init(__va(ep->sal_proc), __va(ep->gp));
break;
case SAL_DESC_AP_WAKEUP:
#ifdef CONFIG_SMP
{
struct ia64_sal_desc_ap_wakeup *ap = (void *) p;
# ifdef SAL_DEBUG
printk("sal[%d] - wakeup type %x, 0x%lx\n",
i, ap->mechanism, ap->vector);
# endif
switch (ap->mechanism) {
case IA64_SAL_AP_EXTERNAL_INT:
ap_wakeup_vector = ap->vector;
# ifdef SAL_DEBUG
printk("SAL: AP wakeup using external interrupt "
"vector 0x%lx\n", ap_wakeup_vector);
# endif
break;
default:
printk("SAL: AP wakeup mechanism unsupported!\n");
break;
}
break;
}
#endif
case SAL_DESC_PLATFORM_FEATURE:
{
struct ia64_sal_desc_platform_feature *pf = (void *) p;
printk("SAL: Platform features ");
if (pf->feature_mask & (1 << 0))
printk("BusLock ");
if (pf->feature_mask & (1 << 1)) {
printk("IRQ_Redirection ");
#ifdef CONFIG_SMP
if (no_int_routing)
smp_int_redirect &= ~SMP_IRQ_REDIRECTION;
else
smp_int_redirect |= SMP_IRQ_REDIRECTION;
#endif
}
if (pf->feature_mask & (1 << 2)) {
printk("IPI_Redirection ");
#ifdef CONFIG_SMP
if (no_int_routing)
smp_int_redirect &= ~SMP_IPI_REDIRECTION;
else
smp_int_redirect |= SMP_IPI_REDIRECTION;
#endif
}
printk("\n");
break;
}
}
p += SAL_DESC_SIZE(*p);
}
}
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