simplify interrupt handling

We have removed spl levels, now remove the machinery to manage different
PIC masks according to levels. Only keep machinery to disable interrupts
whatever the level.

* i386/i386/pic.c (pic_mask): Remove array.
(picinit): Do not form PIC mask. Set initial PIC mask to 0.
(form_pic_mask): Remove function.
* i386/i386/pic.h (form_pic_mask, pic_mask): Remove declarations.
* i386/i386/spl.S (SETMASK): Remove macro.
(XEN_SETMASK): Add macro, containing the Xen version of SETMASK.
(spl0, splx_cli, spl) [MACH_XEN]: Call XEN_SETMASK instead of SETMASK.
* i386/i386/pit.c (clkstart): Do not call form_pic_mask.
* i386/i386at/autoconf.c (take_dev_irq, take_ctlr_irq): Likewise.
* i386/i386at/kd_mouse.c (kd_mouse_open, kd_mouse_close): Likewise.
* linux/dev/arch/i386/kernel/irq.c (mask_irq, unmask_irq): Directly update
curr_pic_mask without using pic_mask array.
(init_IRQ, restore_IRQ): do not call form_pic_mask.
* linux/dev/include/asm-i386/system.h: Include <i386/ipl.h>.
(__save_flags, __restore_flags): Use curr_ipl and splx instead of
hardware flags.
* linux/dev/init/main.c (linux_init): Do not call cli.
* linux/dev/kernel/sched.c (linux_timer_intr): Do not use pic_mask.
* linux/src/drivers/block/ide.c (try_to_identify): Disable irq probing.
* linux/src/drivers/scsi/NCR53c406a.c (NCR53c406a_detect): Disable irq
probing.

1 files changed, 1 insertions, 1 deletions

diff --git a/linux/dev/kernel/sched.c b/linux/dev/kernel/sched.c
index 87906a45..2a9eeb3f 100644
--- a/linux/dev/kernel/sched.c
+++ b/linux/dev/kernel/sched.c
@@ -622,6 +622,6 @@ linux_timer_intr (void)
     mark_bh (TQUEUE_BH);
 #if 0
   if (linux_timer_print)
-    printf ("linux_timer_intr: pic_mask[0] %x\n", pic_mask[0]);
+    printf ("linux_timer_intr: hello\n");
 #endif
 }