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authorYi Li <yi.li@analog.com>2009-01-07 16:14:39 +0100
committerBryan Wu <cooloney@kernel.org>2009-01-07 16:14:39 +0100
commit6a01f230339321292cf065551f8cf55361052461 (patch)
tree7ac2ac8fc9f05a7315ef6a7f6f0a387433c62c14 /arch/blackfin/mach-common/interrupt.S
parentBlackfin arch: Add AD7879 defaults for the Blackfin Landscape LCD EZ-Extender (diff)
downloadlinux-6a01f230339321292cf065551f8cf55361052461.tar.xz
linux-6a01f230339321292cf065551f8cf55361052461.zip
Blackfin arch: merge adeos blackfin part to arch/blackfin/
[Mike Frysinger <vapier.adi@gmail.com>: - handle bf531/bf532/bf534/bf536 variants in ipipe.h - cleanup IPIPE logic for bfin_set_irq_handler() - cleanup ipipe asm code a bit and add missing ENDPROC() - simplify IPIPE code in trap_c - unify some of the IPIPE code and fix style - simplify DO_IRQ_L1 handling with ipipe code - revert IRQ_SW_INT# addition from ipipe merge - remove duplicate get_{c,s}clk() prototypes ] Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/mach-common/interrupt.S')
-rw-r--r--arch/blackfin/mach-common/interrupt.S60
1 files changed, 60 insertions, 0 deletions
diff --git a/arch/blackfin/mach-common/interrupt.S b/arch/blackfin/mach-common/interrupt.S
index 2604b532897c..c1bdd1edc8eb 100644
--- a/arch/blackfin/mach-common/interrupt.S
+++ b/arch/blackfin/mach-common/interrupt.S
@@ -129,8 +129,15 @@ __common_int_entry:
#endif
r1 = sp;
SP += -12;
+#ifdef CONFIG_IPIPE
+ call ___ipipe_grab_irq
+ SP += 12;
+ cc = r0 == 0;
+ if cc jump .Lcommon_restore_context;
+#else /* CONFIG_IPIPE */
call _do_irq;
SP += 12;
+#endif /* CONFIG_IPIPE */
call _return_from_int;
.Lcommon_restore_context:
RESTORE_CONTEXT
@@ -247,3 +254,56 @@ ENTRY(_evt_system_call)
call _system_call;
jump .Lcommon_restore_context;
ENDPROC(_evt_system_call)
+
+#ifdef CONFIG_IPIPE
+ENTRY(___ipipe_call_irqtail)
+ r0.l = 1f;
+ r0.h = 1f;
+ reti = r0;
+ rti;
+1:
+ [--sp] = rets;
+ [--sp] = ( r7:4, p5:3 );
+ p0.l = ___ipipe_irq_tail_hook;
+ p0.h = ___ipipe_irq_tail_hook;
+ p0 = [p0];
+ sp += -12;
+ call (p0);
+ sp += 12;
+ ( r7:4, p5:3 ) = [sp++];
+ rets = [sp++];
+
+ [--sp] = reti;
+ reti = [sp++]; /* IRQs are off. */
+ r0.h = 3f;
+ r0.l = 3f;
+ p0.l = lo(EVT14);
+ p0.h = hi(EVT14);
+ [p0] = r0;
+ csync;
+ r0 = 0x401f;
+ sti r0;
+ raise 14;
+ [--sp] = reti; /* IRQs on. */
+2:
+ jump 2b; /* Likely paranoid. */
+3:
+ sp += 4; /* Discard saved RETI */
+ r0.h = _evt14_softirq;
+ r0.l = _evt14_softirq;
+ p0.l = lo(EVT14);
+ p0.h = hi(EVT14);
+ [p0] = r0;
+ csync;
+ p0.l = _bfin_irq_flags;
+ p0.h = _bfin_irq_flags;
+ r0 = [p0];
+ sti r0;
+#if 0 /* FIXME: this actually raises scheduling latencies */
+ /* Reenable interrupts */
+ [--sp] = reti;
+ r0 = [sp++];
+#endif
+ rts;
+ENDPROC(___ipipe_call_irqtail)
+#endif /* CONFIG_IPIPE */