[MIPS] JAZZ fixes
- restructured irq handling
- switched vdma to use memory allocated via get_free_pages
- setup platform devices for serial, jazz_esp and jazzsonic
- fixed cmos rtc access
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/jazz/irq.c b/arch/mips/jazz/irq.c
index 015cf4b..5623541 100644
--- a/arch/mips/jazz/irq.c
+++ b/arch/mips/jazz/irq.c
@@ -11,15 +11,17 @@
#include <linux/kernel.h>
#include <linux/spinlock.h>
+#include <asm/irq_cpu.h>
#include <asm/i8259.h>
#include <asm/io.h>
#include <asm/jazz.h>
+#include <asm/pgtable.h>
static DEFINE_SPINLOCK(r4030_lock);
static void enable_r4030_irq(unsigned int irq)
{
- unsigned int mask = 1 << (irq - JAZZ_PARALLEL_IRQ);
+ unsigned int mask = 1 << (irq - JAZZ_IRQ_START);
unsigned long flags;
spin_lock_irqsave(&r4030_lock, flags);
@@ -30,7 +32,7 @@
void disable_r4030_irq(unsigned int irq)
{
- unsigned int mask = ~(1 << (irq - JAZZ_PARALLEL_IRQ));
+ unsigned int mask = ~(1 << (irq - JAZZ_IRQ_START));
unsigned long flags;
spin_lock_irqsave(&r4030_lock, flags);
@@ -51,7 +53,7 @@
{
int i;
- for (i = JAZZ_PARALLEL_IRQ; i <= JAZZ_TIMER_IRQ; i++)
+ for (i = JAZZ_IRQ_START; i <= JAZZ_IRQ_END; i++)
set_irq_chip_and_handler(i, &r4030_irq_type, handle_level_irq);
r4030_write_reg16(JAZZ_IO_IRQ_ENABLE, 0);
@@ -66,82 +68,40 @@
*/
void __init arch_init_irq(void)
{
+ /*
+ * this is a hack to get back the still needed wired mapping
+ * killed by init_mm()
+ */
+
+ /* Map 0xe0000000 -> 0x0:800005C0, 0xe0010000 -> 0x1:30000580 */
+ add_wired_entry(0x02000017, 0x03c00017, 0xe0000000, PM_64K);
+ /* Map 0xe2000000 -> 0x0:900005C0, 0xe3010000 -> 0x0:910005C0 */
+ add_wired_entry(0x02400017, 0x02440017, 0xe2000000, PM_16M);
+ /* Map 0xe4000000 -> 0x0:600005C0, 0xe4100000 -> 400005C0 */
+ add_wired_entry(0x01800017, 0x01000017, 0xe4000000, PM_4M);
+
init_i8259_irqs(); /* Integrated i8259 */
+ mips_cpu_irq_init();
init_r4030_ints();
- change_c0_status(ST0_IM, IE_IRQ4 | IE_IRQ3 | IE_IRQ2 | IE_IRQ1);
-}
-
-static void loc_call(unsigned int irq, unsigned int mask)
-{
- r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
- r4030_read_reg16(JAZZ_IO_IRQ_ENABLE) & mask);
- do_IRQ(irq);
- r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
- r4030_read_reg16(JAZZ_IO_IRQ_ENABLE) | mask);
-}
-
-static void ll_local_dev(void)
-{
- switch (r4030_read_reg32(JAZZ_IO_IRQ_SOURCE)) {
- case 0:
- panic("Unimplemented loc_no_irq handler");
- break;
- case 4:
- loc_call(JAZZ_PARALLEL_IRQ, JAZZ_IE_PARALLEL);
- break;
- case 8:
- loc_call(JAZZ_PARALLEL_IRQ, JAZZ_IE_FLOPPY);
- break;
- case 12:
- panic("Unimplemented loc_sound handler");
- break;
- case 16:
- panic("Unimplemented loc_video handler");
- break;
- case 20:
- loc_call(JAZZ_ETHERNET_IRQ, JAZZ_IE_ETHERNET);
- break;
- case 24:
- loc_call(JAZZ_SCSI_IRQ, JAZZ_IE_SCSI);
- break;
- case 28:
- loc_call(JAZZ_KEYBOARD_IRQ, JAZZ_IE_KEYBOARD);
- break;
- case 32:
- loc_call(JAZZ_MOUSE_IRQ, JAZZ_IE_MOUSE);
- break;
- case 36:
- loc_call(JAZZ_SERIAL1_IRQ, JAZZ_IE_SERIAL1);
- break;
- case 40:
- loc_call(JAZZ_SERIAL2_IRQ, JAZZ_IE_SERIAL2);
- break;
- }
+ change_c0_status(ST0_IM, IE_IRQ2 | IE_IRQ1);
}
asmlinkage void plat_irq_dispatch(void)
{
unsigned int pending = read_c0_cause() & read_c0_status();
+ unsigned int irq;
- if (pending & IE_IRQ5)
- write_c0_compare(0);
- else if (pending & IE_IRQ4) {
+ if (pending & IE_IRQ4) {
r4030_read_reg32(JAZZ_TIMER_REGISTER);
do_IRQ(JAZZ_TIMER_IRQ);
- } else if (pending & IE_IRQ3)
- panic("Unimplemented ISA NMI handler");
- else if (pending & IE_IRQ2)
+ } else if (pending & IE_IRQ2)
do_IRQ(r4030_read_reg32(JAZZ_EISA_IRQ_ACK));
else if (pending & IE_IRQ1) {
- ll_local_dev();
- } else if (unlikely(pending & IE_IRQ0))
- panic("Unimplemented local_dma handler");
- else if (pending & IE_SW1) {
- clear_c0_cause(IE_SW1);
- panic("Unimplemented sw1 handler");
- } else if (pending & IE_SW0) {
- clear_c0_cause(IE_SW0);
- panic("Unimplemented sw0 handler");
+ irq = *(volatile u8 *)JAZZ_IO_IRQ_SOURCE >> 2;
+ if (likely(irq > 0))
+ do_IRQ(irq + JAZZ_IRQ_START - 1);
+ else
+ panic("Unimplemented loc_no_irq handler");
}
}
