Changeset 2a103b5 in mainline for kernel/arch/ia32/src/drivers/i8254.c

Timestamp:

2019-06-09T11:31:38Z (6 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

c48de91

Parents:

b401b33

Message:

Introduce PIC operations indirection mechanism

Some architectures switch from one interrupt controller implementation
to another during runtime. By providing a cleaner indirection mechanism,
it is possible e.g. for the ia32 IRQ 7 handler to distinguish i8259
spurious interrupts from actual IRQ 7 device interrupts, even when the
i8259 interrupt controller is no longer active.

File:

• kernel/arch/ia32/src/drivers/i8254.c (modified) (1 diff)

kernel/arch/ia32/src/drivers/i8254.c

@@ -96 +96 @@
 {
         pio_write_8(CLK_PORT4, 0x36);
-        pic_disable_irqs(1 << IRQ_CLK);
+        i8259_disable_irqs(1 << IRQ_CLK);
         pio_write_8(CLK_PORT1, (CLK_CONST / HZ) & 0xf);
         pio_write_8(CLK_PORT1, (CLK_CONST / HZ) >> 8);
-        pic_enable_irqs(1 << IRQ_CLK);
+        i8259_enable_irqs(1 << IRQ_CLK);
 }