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1275 |
phoenix |
/*
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* System Abstraction Layer (SAL) interface routines.
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*
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* Copyright (C) 1998, 1999, 2001, 2003 Hewlett-Packard Co
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* David Mosberger-Tang <davidm@hpl.hp.com>
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* Copyright (C) 1999 VA Linux Systems
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* Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
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*/
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#include <linux/config.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/smp.h>
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#include <linux/spinlock.h>
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#include <linux/string.h>
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#include <asm/page.h>
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#include <asm/sal.h>
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#include <asm/pal.h>
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spinlock_t sal_lock __cacheline_aligned = SPIN_LOCK_UNLOCKED;
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unsigned long sal_platform_features;
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static struct {
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void *addr; /* function entry point */
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void *gpval; /* gp value to use */
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} pdesc;
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static long
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default_handler (void)
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{
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return -1;
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}
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ia64_sal_handler ia64_sal = (ia64_sal_handler) default_handler;
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ia64_sal_desc_ptc_t *ia64_ptc_domain_info;
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const char *
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ia64_sal_strerror (long status)
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{
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const char *str;
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switch (status) {
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case 0: str = "Call completed without error"; break;
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case 1: str = "Effect a warm boot of the system to complete "
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"the update"; break;
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case -1: str = "Not implemented"; break;
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case -2: str = "Invalid argument"; break;
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case -3: str = "Call completed with error"; break;
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case -4: str = "Virtual address not registered"; break;
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case -5: str = "No information available"; break;
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case -6: str = "Insufficient space to add the entry"; break;
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case -7: str = "Invalid entry_addr value"; break;
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case -8: str = "Invalid interrupt vector"; break;
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case -9: str = "Requested memory not available"; break;
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case -10: str = "Unable to write to the NVM device"; break;
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case -11: str = "Invalid partition type specified"; break;
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case -12: str = "Invalid NVM_Object id specified"; break;
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case -13: str = "NVM_Object already has the maximum number "
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"of partitions"; break;
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case -14: str = "Insufficient space in partition for the "
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"requested write sub-function"; break;
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case -15: str = "Insufficient data buffer space for the "
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"requested read record sub-function"; break;
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case -16: str = "Scratch buffer required for the write/delete "
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"sub-function"; break;
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case -17: str = "Insufficient space in the NVM_Object for the "
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"requested create sub-function"; break;
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case -18: str = "Invalid value specified in the partition_rec "
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"argument"; break;
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case -19: str = "Record oriented I/O not supported for this "
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"partition"; break;
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case -20: str = "Bad format of record to be written or "
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"required keyword variable not "
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"specified"; break;
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default: str = "Unknown SAL status code"; break;
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}
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return str;
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}
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void __init
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ia64_sal_handler_init (void *entry_point, void *gpval)
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{
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/* fill in the SAL procedure descriptor and point ia64_sal to it: */
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pdesc.addr = entry_point;
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pdesc.gpval = gpval;
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ia64_sal = (ia64_sal_handler) &pdesc;
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}
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void __init
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ia64_sal_init (struct ia64_sal_systab *systab)
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{
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unsigned long min, max;
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char *p;
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struct ia64_sal_desc_entry_point *ep;
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int i;
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if (!systab) {
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printk(KERN_WARNING "Hmm, no SAL System Table.\n");
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return;
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}
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if (strncmp(systab->signature, "SST_", 4) != 0)
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printk(KERN_ERR "bad signature in system table!");
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/*
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* revisions are coded in BCD, so %x does the job for us
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*/
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printk(KERN_INFO "SAL v%x.%02x: oem=%.32s, product=%.32s\n",
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systab->sal_rev_major, systab->sal_rev_minor,
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systab->oem_id, systab->product_id);
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min = ~0UL;
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max = 0;
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p = (char *) (systab + 1);
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for (i = 0; i < systab->entry_count; i++) {
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/*
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* The first byte of each entry type contains the type desciptor.
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*/
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switch (*p) {
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case SAL_DESC_ENTRY_POINT:
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ep = (struct ia64_sal_desc_entry_point *) p;
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printk(KERN_INFO "SAL: entry: pal_proc=0x%lx, sal_proc=0x%lx\n",
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ep->pal_proc, ep->sal_proc);
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ia64_pal_handler_init(__va(ep->pal_proc));
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ia64_sal_handler_init(__va(ep->sal_proc), __va(ep->gp));
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break;
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case SAL_DESC_PTC:
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ia64_ptc_domain_info = (ia64_sal_desc_ptc_t *)p;
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break;
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case SAL_DESC_AP_WAKEUP:
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#ifdef CONFIG_SMP
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{
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struct ia64_sal_desc_ap_wakeup *ap = (void *) p;
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switch (ap->mechanism) {
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case IA64_SAL_AP_EXTERNAL_INT:
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ap_wakeup_vector = ap->vector;
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printk(KERN_INFO "SAL: AP wakeup using external interrupt "
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"vector 0x%lx\n", ap_wakeup_vector);
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break;
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default:
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printk(KERN_ERR "SAL: AP wakeup mechanism unsupported!\n");
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break;
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}
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break;
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}
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#endif
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case SAL_DESC_PLATFORM_FEATURE:
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{
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struct ia64_sal_desc_platform_feature *pf = (void *) p;
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sal_platform_features = pf->feature_mask;
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printk(KERN_INFO "SAL: Platform features ");
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if (pf->feature_mask & IA64_SAL_PLATFORM_FEATURE_BUS_LOCK)
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printk("BusLock ");
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if (pf->feature_mask & IA64_SAL_PLATFORM_FEATURE_IRQ_REDIR_HINT) {
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printk("IRQ_Redirection ");
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#ifdef CONFIG_SMP
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if (no_int_routing)
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smp_int_redirect &= ~SMP_IRQ_REDIRECTION;
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else
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smp_int_redirect |= SMP_IRQ_REDIRECTION;
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#endif
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}
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if (pf->feature_mask & IA64_SAL_PLATFORM_FEATURE_IPI_REDIR_HINT) {
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printk("IPI_Redirection ");
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#ifdef CONFIG_SMP
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if (no_int_routing)
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smp_int_redirect &= ~SMP_IPI_REDIRECTION;
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else
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smp_int_redirect |= SMP_IPI_REDIRECTION;
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#endif
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}
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if (pf->feature_mask & IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT)
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printk("ITC_Drift ");
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printk("\n");
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break;
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}
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}
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p += SAL_DESC_SIZE(*p);
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}
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}
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