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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [IA64] set itv handoff as masked and enable reading irr[0-3]
# HG changeset patch
# User awilliam@xxxxxxxxxxx
# Node ID 0a6f5527ca4bd560fc5c750e7ade3a0040144e40
# Parent 40d96f4e9fcb9d31aca61ef9553c77e12b599e18
[IA64] set itv handoff as masked and enable reading irr[0-3]
Set initial vcpu itv handoff state to mask the timer vector.
This seems to match hardware and makes logical sense from a
spurious interrupt perspective. Enable vcpu_get_irr[0-3]
functions as they seem to work and have the proper backing.
This enables the check_sal_cache_flush() in arch/ia64/kernel.sal.c
to work unmodified, allowing us to remove the Xen changes from
the file (and thus the file from the sparse tree).
Signed-off-by: Alex Williamson <alex.williamson@xxxxxx>
diff -r 40d96f4e9fcb -r 0a6f5527ca4b xen/arch/ia64/xen/domain.c
--- a/xen/arch/ia64/xen/domain.c Mon Apr 03 14:39:27 2006 -0600
+++ b/xen/arch/ia64/xen/domain.c Tue Apr 04 09:39:45 2006 -0600
@@ -487,6 +487,7 @@ void new_thread(struct vcpu *v,
VCPU(v, metaphysical_mode) = 1;
VCPU(v, interrupt_mask_addr) =
(uint64_t)SHAREDINFO_ADDR + INT_ENABLE_OFFSET(v);
+ VCPU(v, itv) = (1 << 16); /* timer vector masked */
}
}
diff -r 40d96f4e9fcb -r 0a6f5527ca4b xen/arch/ia64/xen/vcpu.c
--- a/xen/arch/ia64/xen/vcpu.c Mon Apr 03 14:39:27 2006 -0600
+++ b/xen/arch/ia64/xen/vcpu.c Tue Apr 04 09:39:45 2006 -0600
@@ -823,46 +823,26 @@ IA64FAULT vcpu_get_eoi(VCPU *vcpu, UINT6
IA64FAULT vcpu_get_irr0(VCPU *vcpu, UINT64 *pval)
{
-#ifndef IRR_USE_FIXED
- printk("vcpu_get_irr: called, not implemented yet\n");
- return IA64_ILLOP_FAULT;
-#else
- *pval = vcpu->irr[0];
- return (IA64_NO_FAULT);
-#endif
+ *pval = PSCBX(vcpu, irr[0]);
+ return (IA64_NO_FAULT);
}
IA64FAULT vcpu_get_irr1(VCPU *vcpu, UINT64 *pval)
{
-#ifndef IRR_USE_FIXED
- printk("vcpu_get_irr: called, not implemented yet\n");
- return IA64_ILLOP_FAULT;
-#else
- *pval = vcpu->irr[1];
- return (IA64_NO_FAULT);
-#endif
+ *pval = PSCBX(vcpu, irr[1]);
+ return (IA64_NO_FAULT);
}
IA64FAULT vcpu_get_irr2(VCPU *vcpu, UINT64 *pval)
{
-#ifndef IRR_USE_FIXED
- printk("vcpu_get_irr: called, not implemented yet\n");
- return IA64_ILLOP_FAULT;
-#else
- *pval = vcpu->irr[2];
- return (IA64_NO_FAULT);
-#endif
+ *pval = PSCBX(vcpu, irr[2]);
+ return (IA64_NO_FAULT);
}
IA64FAULT vcpu_get_irr3(VCPU *vcpu, UINT64 *pval)
{
-#ifndef IRR_USE_FIXED
- printk("vcpu_get_irr: called, not implemented yet\n");
- return IA64_ILLOP_FAULT;
-#else
- *pval = vcpu->irr[3];
- return (IA64_NO_FAULT);
-#endif
+ *pval = PSCBX(vcpu, irr[3]);
+ return (IA64_NO_FAULT);
}
IA64FAULT vcpu_get_itv(VCPU *vcpu, UINT64 *pval)
diff -r 40d96f4e9fcb -r 0a6f5527ca4b linux-2.6-xen-sparse/arch/ia64/kernel/sal.c
--- a/linux-2.6-xen-sparse/arch/ia64/kernel/sal.c Mon Apr 03 14:39:27
2006 -0600
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,380 +0,0 @@
-/*
- * System Abstraction Layer (SAL) interface routines.
- *
- * Copyright (C) 1998, 1999, 2001, 2003 Hewlett-Packard Co
- * David Mosberger-Tang <davidm@xxxxxxxxxx>
- * Copyright (C) 1999 VA Linux Systems
- * Copyright (C) 1999 Walt Drummond <drummond@xxxxxxxxxxx>
- */
-#include <linux/config.h>
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/spinlock.h>
-#include <linux/string.h>
-
-#include <asm/delay.h>
-#include <asm/page.h>
-#include <asm/sal.h>
-#include <asm/pal.h>
-
- __cacheline_aligned DEFINE_SPINLOCK(sal_lock);
-unsigned long sal_platform_features;
-
-unsigned short sal_revision;
-unsigned short sal_version;
-
-#define SAL_MAJOR(x) ((x) >> 8)
-#define SAL_MINOR(x) ((x) & 0xff)
-
-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;
-ia64_sal_desc_ptc_t *ia64_ptc_domain_info;
-
-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;
-}
-
-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;
-}
-
-static void __init
-check_versions (struct ia64_sal_systab *systab)
-{
- sal_revision = (systab->sal_rev_major << 8) | systab->sal_rev_minor;
- sal_version = (systab->sal_b_rev_major << 8) | systab->sal_b_rev_minor;
-
- /* Check for broken firmware */
- if ((sal_revision == SAL_VERSION_CODE(49, 29))
- && (sal_version == SAL_VERSION_CODE(49, 29)))
- {
- /*
- * Old firmware for zx2000 prototypes have this weird version
number,
- * reset it to something sane.
- */
- sal_revision = SAL_VERSION_CODE(2, 8);
- sal_version = SAL_VERSION_CODE(0, 0);
- }
-}
-
-static void __init
-sal_desc_entry_point (void *p)
-{
- struct ia64_sal_desc_entry_point *ep = p;
- ia64_pal_handler_init(__va(ep->pal_proc));
- ia64_sal_handler_init(__va(ep->sal_proc), __va(ep->gp));
-}
-
-#ifdef CONFIG_SMP
-static void __init
-set_smp_redirect (int flag)
-{
-#ifndef CONFIG_HOTPLUG_CPU
- if (no_int_routing)
- smp_int_redirect &= ~flag;
- else
- smp_int_redirect |= flag;
-#else
- /*
- * For CPU Hotplug we dont want to do any chipset supported
- * interrupt redirection. The reason is this would require that
- * All interrupts be stopped and hard bind the irq to a cpu.
- * Later when the interrupt is fired we need to set the redir hint
- * on again in the vector. This is combersome for something that the
- * user mode irq balancer will solve anyways.
- */
- no_int_routing=1;
- smp_int_redirect &= ~flag;
-#endif
-}
-#else
-#define set_smp_redirect(flag) do { } while (0)
-#endif
-
-static void __init
-sal_desc_platform_feature (void *p)
-{
- struct ia64_sal_desc_platform_feature *pf = p;
- sal_platform_features = pf->feature_mask;
-
- printk(KERN_INFO "SAL Platform features:");
- if (!sal_platform_features) {
- printk(" None\n");
- return;
- }
-
- if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_BUS_LOCK)
- printk(" BusLock");
- if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_IRQ_REDIR_HINT) {
- printk(" IRQ_Redirection");
- set_smp_redirect(SMP_IRQ_REDIRECTION);
- }
- if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_IPI_REDIR_HINT) {
- printk(" IPI_Redirection");
- set_smp_redirect(SMP_IPI_REDIRECTION);
- }
- if (sal_platform_features & IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT)
- printk(" ITC_Drift");
- printk("\n");
-}
-
-#ifdef CONFIG_SMP
-static void __init
-sal_desc_ap_wakeup (void *p)
-{
- struct ia64_sal_desc_ap_wakeup *ap = p;
-
- switch (ap->mechanism) {
- case IA64_SAL_AP_EXTERNAL_INT:
- ap_wakeup_vector = ap->vector;
- printk(KERN_INFO "SAL: AP wakeup using external interrupt "
- "vector 0x%lx\n", ap_wakeup_vector);
- break;
- default:
- printk(KERN_ERR "SAL: AP wakeup mechanism unsupported!\n");
- break;
- }
-}
-
-static void __init
-chk_nointroute_opt(void)
-{
- char *cp;
- extern char saved_command_line[];
-
- for (cp = saved_command_line; *cp; ) {
- if (memcmp(cp, "nointroute", 10) == 0) {
- no_int_routing = 1;
- printk ("no_int_routing on\n");
- break;
- } else {
- while (*cp != ' ' && *cp)
- ++cp;
- while (*cp == ' ')
- ++cp;
- }
- }
-}
-
-#else
-static void __init sal_desc_ap_wakeup(void *p) { }
-#endif
-
-/*
- * HP rx5670 firmware polls for interrupts during SAL_CACHE_FLUSH by reading
- * cr.ivr, but it never writes cr.eoi. This leaves any interrupt marked as
- * "in-service" and masks other interrupts of equal or lower priority.
- *
- * HP internal defect reports: F1859, F2775, F3031.
- */
-static int sal_cache_flush_drops_interrupts;
-
-static void __init
-check_sal_cache_flush (void)
-{
- unsigned long flags, itv;
- int cpu;
- u64 vector;
-
- cpu = get_cpu();
- local_irq_save(flags);
-
- /*
- * Schedule a timer interrupt, wait until it's reported, and see if
- * SAL_CACHE_FLUSH drops it.
- */
- itv = ia64_get_itv();
- BUG_ON((itv & (1 << 16)) == 0);
-
- ia64_set_itv(IA64_TIMER_VECTOR);
- ia64_set_itm(ia64_get_itc() + 1000);
-
- while (!ia64_get_irr(IA64_TIMER_VECTOR))
- cpu_relax();
-
- ia64_sal_cache_flush(3);
-
- if (ia64_get_irr(IA64_TIMER_VECTOR)) {
- vector = ia64_get_ivr();
- ia64_eoi();
- WARN_ON(vector != IA64_TIMER_VECTOR);
- } else {
- sal_cache_flush_drops_interrupts = 1;
- printk(KERN_ERR "SAL: SAL_CACHE_FLUSH drops interrupts; "
- "PAL_CACHE_FLUSH will be used instead\n");
- ia64_eoi();
- }
-
- ia64_set_itv(itv);
- local_irq_restore(flags);
- put_cpu();
-}
-
-s64
-ia64_sal_cache_flush (u64 cache_type)
-{
- struct ia64_sal_retval isrv;
-
- if (sal_cache_flush_drops_interrupts) {
- unsigned long flags;
- u64 progress;
- s64 rc;
-
- progress = 0;
- local_irq_save(flags);
- rc = ia64_pal_cache_flush(cache_type,
- PAL_CACHE_FLUSH_INVALIDATE, &progress, NULL);
- local_irq_restore(flags);
- return rc;
- }
-
- SAL_CALL(isrv, SAL_CACHE_FLUSH, cache_type, 0, 0, 0, 0, 0, 0);
- return isrv.status;
-}
-
-void __init
-ia64_sal_init (struct ia64_sal_systab *systab)
-{
- char *p;
- int i;
-
- if (!systab) {
- printk(KERN_WARNING "Hmm, no SAL System Table.\n");
- return;
- }
-
- if (strncmp(systab->signature, "SST_", 4) != 0)
- printk(KERN_ERR "bad signature in system table!");
-
- check_versions(systab);
-#ifdef CONFIG_SMP
- chk_nointroute_opt();
-#endif
-
- /* revisions are coded in BCD, so %x does the job for us */
- printk(KERN_INFO "SAL %x.%x: %.32s %.32s%sversion %x.%x\n",
- SAL_MAJOR(sal_revision), SAL_MINOR(sal_revision),
- systab->oem_id, systab->product_id,
- systab->product_id[0] ? " " : "",
- SAL_MAJOR(sal_version), SAL_MINOR(sal_version));
-
- p = (char *) (systab + 1);
- for (i = 0; i < systab->entry_count; i++) {
- /*
- * The first byte of each entry type contains the type
- * descriptor.
- */
- switch (*p) {
- case SAL_DESC_ENTRY_POINT:
- sal_desc_entry_point(p);
- break;
- case SAL_DESC_PLATFORM_FEATURE:
- sal_desc_platform_feature(p);
- break;
- case SAL_DESC_PTC:
- ia64_ptc_domain_info = (ia64_sal_desc_ptc_t *)p;
- break;
- case SAL_DESC_AP_WAKEUP:
- sal_desc_ap_wakeup(p);
- break;
- }
- p += SAL_DESC_SIZE(*p);
- }
-
-#ifdef CONFIG_XEN
- if (!running_on_xen)
-#endif
- check_sal_cache_flush();
-}
-
-int
-ia64_sal_oemcall(struct ia64_sal_retval *isrvp, u64 oemfunc, u64 arg1,
- u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6, u64 arg7)
-{
- if (oemfunc < IA64_SAL_OEMFUNC_MIN || oemfunc > IA64_SAL_OEMFUNC_MAX)
- return -1;
- SAL_CALL(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6, arg7);
- return 0;
-}
-EXPORT_SYMBOL(ia64_sal_oemcall);
-
-int
-ia64_sal_oemcall_nolock(struct ia64_sal_retval *isrvp, u64 oemfunc, u64 arg1,
- u64 arg2, u64 arg3, u64 arg4, u64 arg5, u64 arg6,
- u64 arg7)
-{
- if (oemfunc < IA64_SAL_OEMFUNC_MIN || oemfunc > IA64_SAL_OEMFUNC_MAX)
- return -1;
- SAL_CALL_NOLOCK(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6,
- arg7);
- return 0;
-}
-EXPORT_SYMBOL(ia64_sal_oemcall_nolock);
-
-int
-ia64_sal_oemcall_reentrant(struct ia64_sal_retval *isrvp, u64 oemfunc,
- u64 arg1, u64 arg2, u64 arg3, u64 arg4, u64 arg5,
- u64 arg6, u64 arg7)
-{
- if (oemfunc < IA64_SAL_OEMFUNC_MIN || oemfunc > IA64_SAL_OEMFUNC_MAX)
- return -1;
- SAL_CALL_REENTRANT(*isrvp, oemfunc, arg1, arg2, arg3, arg4, arg5, arg6,
- arg7);
- return 0;
-}
-EXPORT_SYMBOL(ia64_sal_oemcall_reentrant);
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