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authorBjorn Helgaas <bjorn.helgaas@hp.com>2006-01-30 16:32:31 -0700
committerTony Luck <tony.luck@intel.com>2006-02-02 13:25:54 -0800
commita58786917ce23c2a26c3e099c3cdba32a35eeceb (patch)
tree4740de51febbe16934d24d94cb80432a7547cb26 /include/asm-ia64
parentaf14aca90e0cdfccd71f9947c45b6ea2cf321dcb (diff)
downloadop-kernel-dev-a58786917ce23c2a26c3e099c3cdba32a35eeceb.zip
op-kernel-dev-a58786917ce23c2a26c3e099c3cdba32a35eeceb.tar.gz
[IA64] avoid broken SAL_CACHE_FLUSH implementations
If SAL_CACHE_FLUSH drops interrupts, complain about it and fall back to using PAL_CACHE_FLUSH instead. This is to work around a defect in HP rx5670 firmware: when an interrupt occurs during SAL_CACHE_FLUSH, SAL drops the interrupt but leaves it marked "in-service", which leaves the interrupt (and others of equal or lower priority) masked. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include/asm-ia64')
-rw-r--r--include/asm-ia64/processor.h17
-rw-r--r--include/asm-ia64/sal.h10
2 files changed, 18 insertions, 9 deletions
diff --git a/include/asm-ia64/processor.h b/include/asm-ia64/processor.h
index 09b9902..23c8e1b 100644
--- a/include/asm-ia64/processor.h
+++ b/include/asm-ia64/processor.h
@@ -559,6 +559,23 @@ ia64_eoi (void)
#define cpu_relax() ia64_hint(ia64_hint_pause)
+static inline int
+ia64_get_irr(unsigned int vector)
+{
+ unsigned int reg = vector / 64;
+ unsigned int bit = vector % 64;
+ u64 irr;
+
+ switch (reg) {
+ case 0: irr = ia64_getreg(_IA64_REG_CR_IRR0); break;
+ case 1: irr = ia64_getreg(_IA64_REG_CR_IRR1); break;
+ case 2: irr = ia64_getreg(_IA64_REG_CR_IRR2); break;
+ case 3: irr = ia64_getreg(_IA64_REG_CR_IRR3); break;
+ }
+
+ return test_bit(bit, &irr);
+}
+
static inline void
ia64_set_lrr0 (unsigned long val)
{
diff --git a/include/asm-ia64/sal.h b/include/asm-ia64/sal.h
index 313cad0..0b210ab 100644
--- a/include/asm-ia64/sal.h
+++ b/include/asm-ia64/sal.h
@@ -658,15 +658,7 @@ ia64_sal_freq_base (unsigned long which, unsigned long *ticks_per_second,
return isrv.status;
}
-/* Flush all the processor and platform level instruction and/or data caches */
-static inline s64
-ia64_sal_cache_flush (u64 cache_type)
-{
- struct ia64_sal_retval isrv;
- SAL_CALL(isrv, SAL_CACHE_FLUSH, cache_type, 0, 0, 0, 0, 0, 0);
- return isrv.status;
-}
-
+extern s64 ia64_sal_cache_flush (u64 cache_type);
/* Initialize all the processor and platform level instruction and data caches */
static inline s64
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