diff options
Diffstat (limited to 'arch/sparc/kernel/entry.S')
| -rw-r--r-- | arch/sparc/kernel/entry.S | 50 |
1 files changed, 49 insertions, 1 deletions
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S index 8eeac72b0..ff1ac2497 100644 --- a/arch/sparc/kernel/entry.S +++ b/arch/sparc/kernel/entry.S @@ -1,4 +1,4 @@ -/* $Id: entry.S,v 1.159 1999/05/08 03:00:03 davem Exp $ +/* $Id: entry.S,v 1.160 1999/06/03 15:02:11 davem Exp $ * arch/sparc/kernel/entry.S: Sparc trap low-level entry points. * * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) @@ -1889,4 +1889,52 @@ C_LABEL(restore_current): retl nop +#ifdef CONFIG_PCI +#include <asm/pcic.h> + + .align 4 + .globl linux_trap_ipi15_pcic +linux_trap_ipi15_pcic: + rd %wim, %l3 + SAVE_ALL + + /* + * First deactivate NMI + * or we cannot drop ET, cannot get window spill traps. + * The busy loop is necessary because the PIO error + * sometimes does not go away quickly and we trap again. + */ + sethi %hi(C_LABEL(pcic_regs)), %o1 + ld [%o1 + %lo(C_LABEL(pcic_regs))], %o2 + + ! Get pending status for printouts later. + ld [%o2 + PCI_SYS_INT_PENDING], %o0 + + mov PCI_SYS_INT_PENDING_CLEAR_ALL, %o1 + stb %o1, [%o2 + PCI_SYS_INT_PENDING_CLEAR] +1: + ld [%o2 + PCI_SYS_INT_PENDING], %o1 + andcc %o1, ((PCI_SYS_INT_PENDING_PIO|PCI_SYS_INT_PENDING_PCI)>>24), %g0 + bne 1b + nop + + or %l0, PSR_PIL, %l4 + wr %l4, 0x0, %psr + WRITE_PAUSE + wr %l4, PSR_ET, %psr + WRITE_PAUSE + + call C_LABEL(pcic_nmi) + add %sp, REGWIN_SZ, %o1 ! struct pt_regs *regs + RESTORE_ALL + + .globl C_LABEL(pcic_nmi_trap_patch) +C_LABEL(pcic_nmi_trap_patch): + sethi %hi(linux_trap_ipi15_pcic), %l3 + jmpl %l3 + %lo(linux_trap_ipi15_pcic), %g0 + rd %psr, %l0 + .word 0 + +#endif /* CONFIG_PCI */ + /* End of entry.S */ |