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Blackfin arch: merge adeos blackfin part to arch/blackfin/

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[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>
This commit is contained in:
Yi Li
2009-01-07 23:14:39 +08:00
committed by Bryan Wu
parent 5105432a32
commit 6a01f23033
58 changed files with 1881 additions and 419 deletions
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60
arch/blackfin/mach-common/interrupt.S
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@@ -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 */