irqchip: mips-gic: Stop using per-platform mapping tables
Now that the GIC properly uses IRQ domains, kill off the per-platform
routing tables that were used to make the GIC appear transparent.
This includes:
- removing the mapping tables and the support for applying them,
- moving GIC IPI support to the GIC driver,
- properly routing the i8259 through the GIC on Malta, and
- updating IRQ assignments on SEAD-3 when the GIC is present.
Platforms no longer will pass an interrupt mapping table to gic_init.
Instead, they will pass the CPU interrupt vector (2 - 7) that they
expect the GIC to route interrupts to. Note that in EIC mode this
value is ignored and all GIC interrupts are routed to EIC vector 1.
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Reviewed-by: Qais Yousef <qais.yousef@imgtec.com>
Tested-by: Qais Yousef <qais.yousef@imgtec.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jeffrey Deans <jeffrey.deans@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Jonas Gorski <jogo@openwrt.org>
Cc: John Crispin <blogic@openwrt.org>
Cc: David Daney <ddaney.cavm@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7816/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/mti-sead3/sead3-platform.c b/arch/mips/mti-sead3/sead3-platform.c
index 6c3b33d..d9661eb 100644
--- a/arch/mips/mti-sead3/sead3-platform.c
+++ b/arch/mips/mti-sead3/sead3-platform.c
@@ -9,10 +9,13 @@
#include <linux/init.h>
#include <linux/serial_8250.h>
-#define UART(base, int) \
+#include <asm/gic.h>
+#include <asm/mips-boards/sead3int.h>
+
+#define UART(base) \
{ \
.mapbase = base, \
- .irq = int, \
+ .irq = -1, \
.uartclk = 14745600, \
.iotype = UPIO_MEM32, \
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP, \
@@ -20,8 +23,8 @@
}
static struct plat_serial8250_port uart8250_data[] = {
- UART(0x1f000900, MIPS_CPU_IRQ_BASE + 4), /* ttyS0 = USB */
- UART(0x1f000800, MIPS_CPU_IRQ_BASE + 4), /* ttyS1 = RS232 */
+ UART(0x1f000900), /* ttyS0 = USB */
+ UART(0x1f000800), /* ttyS1 = RS232 */
{ },
};
@@ -35,6 +38,13 @@
static int __init uart8250_init(void)
{
+ if (gic_present) {
+ uart8250_data[0].irq = MIPS_GIC_IRQ_BASE + GIC_INT_UART0;
+ uart8250_data[1].irq = MIPS_GIC_IRQ_BASE + GIC_INT_UART1;
+ } else {
+ uart8250_data[0].irq = MIPS_CPU_IRQ_BASE + CPU_INT_UART0;
+ uart8250_data[1].irq = MIPS_CPU_IRQ_BASE + CPU_INT_UART1;
+ }
return platform_device_register(&uart8250_device);
}