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i386/pc386: Fix interrupt support.

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Fix the interrupt and stop the spurious interrupt from happening.

The fix moves the EOI to C code and cleans that functionality out
of the asm part of the ISR handler.

The code checks the ISR and IRR registers on the enable.

Only ack the master for a slave IRQ if the slave has no other pending
requests.
This commit is contained in:
Chris Johns
2016-05-06 17:55:29 +10:00
parent 292dbff069
commit 93fb879796
9 changed files with 471 additions and 172 deletions
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4
c/src/lib/libbsp/i386/shared/irq/irq_init.c
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@@ -66,7 +66,7 @@ static int raw_not_connected(
static rtems_raw_irq_connect_data idtHdl[IDT_SIZE];
static rtems_raw_irq_hdl rtemsIrq[BSP_IRQ_LINES_NUMBER] = {
static rtems_raw_irq_hdl rtemsIrq[BSP_IRQ_VECTOR_NUMBER] = {
rtems_irq_prologue_0,
rtems_irq_prologue_1,
rtems_irq_prologue_2,
@@ -149,7 +149,7 @@ void rtems_irq_mngt_init(void)
* Patch the entry that will be used by RTEMS for interrupt management
* with RTEMS prologue.
*/
for (i = 0; i < BSP_IRQ_LINES_NUMBER; i++) {
for (i = 0; i < BSP_IRQ_VECTOR_NUMBER; i++) {
create_interrupt_gate_descriptor(&idtEntry, rtemsIrq[i]);
idt_entry_tbl[i + BSP_ASM_IRQ_VECTOR_BASE] = idtEntry;
}