diff options
| author | Cyrill Gorcunov <gorcunov@gmail.com> | 2008-08-18 20:45:56 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-19 02:07:16 +0200 |
| commit | c177b0bc03e0e11623e2099db42903fb0caf0fd3 (patch) | |
| tree | 7681c1fcd3dbe25d716438cdae661a517b1ab782 /arch/x86/kernel/apic_64.c | |
| parent | c40aaec6868401671a0ca14ed77e9b2da2d1f223 (diff) | |
x86: apic - unify disconnect_bsp_APIC
- just #ifdef added
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/apic_64.c')
| -rw-r--r-- | arch/x86/kernel/apic_64.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c index fe57db9f3fbb..0d969103fce7 100644 --- a/arch/x86/kernel/apic_64.c +++ b/arch/x86/kernel/apic_64.c @@ -1348,8 +1348,24 @@ void __init connect_bsp_APIC(void) */ void disconnect_bsp_APIC(int virt_wire_setup) { +#ifdef CONFIG_X86_32 + if (pic_mode) { + /* + * Put the board back into PIC mode (has an effect only on + * certain older boards). Note that APIC interrupts, including + * IPIs, won't work beyond this point! The only exception are + * INIT IPIs. + */ + apic_printk(APIC_VERBOSE, "disabling APIC mode, " + "entering PIC mode.\n"); + outb(0x70, 0x22); + outb(0x00, 0x23); + return; + } +#endif + /* Go back to Virtual Wire compatibility mode */ - unsigned long value; + unsigned int value; /* For the spurious interrupt use vector F, and enable it */ value = apic_read(APIC_SPIV); @@ -1375,7 +1391,10 @@ void disconnect_bsp_APIC(int virt_wire_setup) apic_write(APIC_LVT0, APIC_LVT_MASKED); } - /* For LVT1 make it edge triggered, active high, nmi and enabled */ + /* + * For LVT1 make it edge triggered, active high, + * nmi and enabled + */ value = apic_read(APIC_LVT1); value &= ~(APIC_MODE_MASK | APIC_SEND_PENDING | APIC_INPUT_POLARITY | APIC_LVT_REMOTE_IRR | |