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authorAndrew Bresticker <abrestic@chromium.org>2014-09-18 14:47:24 -0700
committerRalf Baechle <ralf@linux-mips.org>2014-11-24 07:44:56 +0100
commit18743d2781d01d34d132f952a2e16353ccb4c3de (patch)
tree42df699518d3b44c08ef49fa3d893dc38d8ddc5e /arch/mips/mti-sead3
parentc49581a4dfaade3a483f3db85581a2cdb6bb85a0 (diff)
downloadop-kernel-dev-18743d2781d01d34d132f952a2e16353ccb4c3de.zip
op-kernel-dev-18743d2781d01d34d132f952a2e16353ccb4c3de.tar.gz
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>
Diffstat (limited to 'arch/mips/mti-sead3')
-rw-r--r--arch/mips/mti-sead3/sead3-ehci.c8
-rw-r--r--arch/mips/mti-sead3/sead3-int.c28
-rw-r--r--arch/mips/mti-sead3/sead3-net.c14
-rw-r--r--arch/mips/mti-sead3/sead3-platform.c18
4 files changed, 33 insertions, 35 deletions
diff --git a/arch/mips/mti-sead3/sead3-ehci.c b/arch/mips/mti-sead3/sead3-ehci.c
index 772fc05..4ddaa0f 100644
--- a/arch/mips/mti-sead3/sead3-ehci.c
+++ b/arch/mips/mti-sead3/sead3-ehci.c
@@ -10,6 +10,9 @@
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
+#include <asm/gic.h>
+#include <asm/mips-boards/sead3int.h>
+
struct resource ehci_resources[] = {
{
.start = 0x1b200000,
@@ -17,7 +20,6 @@ struct resource ehci_resources[] = {
.flags = IORESOURCE_MEM
},
{
- .start = MIPS_CPU_IRQ_BASE + 2,
.flags = IORESOURCE_IRQ
}
};
@@ -37,6 +39,10 @@ static struct platform_device ehci_device = {
static int __init ehci_init(void)
{
+ if (gic_present)
+ ehci_resources[1].start = MIPS_GIC_IRQ_BASE + GIC_INT_EHCI;
+ else
+ ehci_resources[1].start = MIPS_CPU_IRQ_BASE + CPU_INT_EHCI;
return platform_device_register(&ehci_device);
}
diff --git a/arch/mips/mti-sead3/sead3-int.c b/arch/mips/mti-sead3/sead3-int.c
index 8f36342..cb06cd9 100644
--- a/arch/mips/mti-sead3/sead3-int.c
+++ b/arch/mips/mti-sead3/sead3-int.c
@@ -22,30 +22,6 @@
static unsigned long sead3_config_reg;
-/*
- * This table defines the setup for each external GIC interrupt. It is
- * indexed by interrupt number.
- */
-#define GIC_CPU_NMI GIC_MAP_TO_NMI_MSK
-static struct gic_intr_map gic_intr_map[GIC_NUM_INTRS] = {
- { 0, GIC_CPU_INT4, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
- { 0, GIC_CPU_INT3, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
- { 0, GIC_CPU_INT2, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
- { 0, GIC_CPU_INT2, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
- { 0, GIC_CPU_INT1, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
- { 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
- { 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
- { 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
- { 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
- { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED },
- { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED },
- { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED },
- { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED },
- { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED },
- { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED },
- { GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED, GIC_UNUSED },
-};
-
asmlinkage void plat_irq_dispatch(void)
{
unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
@@ -81,7 +57,7 @@ void __init arch_init_irq(void)
(current_cpu_data.options & MIPS_CPU_VEIC) ? "on" : "off");
if (gic_present)
- gic_init(GIC_BASE_ADDR, GIC_ADDRSPACE_SZ, gic_intr_map,
- ARRAY_SIZE(gic_intr_map), MIPS_GIC_IRQ_BASE);
+ gic_init(GIC_BASE_ADDR, GIC_ADDRSPACE_SZ, CPU_INT_GIC,
+ MIPS_GIC_IRQ_BASE);
}
diff --git a/arch/mips/mti-sead3/sead3-net.c b/arch/mips/mti-sead3/sead3-net.c
index dd11e7e..c9f728a 100644
--- a/arch/mips/mti-sead3/sead3-net.c
+++ b/arch/mips/mti-sead3/sead3-net.c
@@ -10,6 +10,9 @@
#include <linux/platform_device.h>
#include <linux/smsc911x.h>
+#include <asm/gic.h>
+#include <asm/mips-boards/sead3int.h>
+
static struct smsc911x_platform_config sead3_smsc911x_data = {
.irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
.irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
@@ -17,14 +20,13 @@ static struct smsc911x_platform_config sead3_smsc911x_data = {
.phy_interface = PHY_INTERFACE_MODE_MII,
};
-struct resource sead3_net_resourcess[] = {
+struct resource sead3_net_resources[] = {
{
.start = 0x1f010000,
.end = 0x1f01ffff,
.flags = IORESOURCE_MEM
},
{
- .start = MIPS_CPU_IRQ_BASE + 6,
.flags = IORESOURCE_IRQ
}
};
@@ -35,12 +37,16 @@ static struct platform_device sead3_net_device = {
.dev = {
.platform_data = &sead3_smsc911x_data,
},
- .num_resources = ARRAY_SIZE(sead3_net_resourcess),
- .resource = sead3_net_resourcess
+ .num_resources = ARRAY_SIZE(sead3_net_resources),
+ .resource = sead3_net_resources
};
static int __init sead3_net_init(void)
{
+ if (gic_present)
+ sead3_net_resources[1].start = MIPS_GIC_IRQ_BASE + GIC_INT_NET;
+ else
+ sead3_net_resources[1].start = MIPS_CPU_IRQ_BASE + CPU_INT_NET;
return platform_device_register(&sead3_net_device);
}
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 struct platform_device uart8250_device = {
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);
}
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