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Subject[GIT PULL] irqchip updates for 4.7
Date
Hi Thomas,

This is the pull request for the irqchip updates targeting 4.7: A
couple of new drivers, quite a few cleanups two bug fixes and a
workaround for a Broadcom erratum. Jon's PM support has uncovered
another bug nest, so I'm holding it until this is properly solved.

A word of warning: there is some other GIC stuff queued through the
KVM/ARM tree (ACPI support) and the arm64 tree (feature detection
code), which are already in -next. I'm including the resolution at the
end of this email.

Thanks,

M.

The following changes since commit 287e9357abcc0ef079bf4e439e098a3bd6246a05:

DT/arm,gic-v3: Documment PPI partition support (2016-05-02 13:42:51 +0200)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git tags/irqchip-for-4.7

for you to fetch changes up to a1dcbd11d09be1cb357b2f217c0eaa1461128da0:

irqchip/bcm2836: Use a more generic memory barrier call (2016-05-11 10:13:00 +0100)

----------------------------------------------------------------
irqchip updates for Linux 4.7

- Layerscape SCFG MSI controller support
- LPC32xx interrupt controller support
- RPi irqchip support on arm64
- GICv2 cleanup
- GICv2 and GICv3 bug fixes

----------------------------------------------------------------
Christoph Hellwig (1):
irqchip/irq-alpine-msi: Don't use <asm-generic/msi.h>

Dan Carpenter (1):
irqchip/mbigen: Checking for IS_ERR() instead of NULL

Eric Anholt (3):
irqchip/bcm2836: Drop smp_set_ops on arm64 builds
irqchip/bcm2836: Fix compiler warning on 64-bit build
irqchip/bcm2836: Use a more generic memory barrier call

Jon Hunter (10):
genirq: Ensure IRQ descriptor is valid when setting-up the IRQ
irqchip: Mask the non-type/sense bits when translating an IRQ
irqchip/gic: Don't unnecessarily write the IRQ configuration
irqchip/gic: WARN if setting the interrupt type for a PPI fails
irqchip/gic: Don't initialise chip if mapping IO space fails
irqchip/gic: Remove static irq_chip definition for eoimode1
irqchip/gic: Return an error if GIC initialisation fails
irqchip/gic: Pass GIC pointer to save/restore functions
irqchip/gic: Store GIC configuration parameters
irqchip/gic: Add helper functions for GIC setup and teardown

Marc Zyngier (2):
irqchip/gic-v3: Remove inexistant register definition
irqchip/gic-v3: Configure all interrupts as non-secure Group-1

Minghuan Lian (2):
dt/bindings: Add bindings for Layerscape SCFG MSI
irqchip: Add Layerscape SCFG MSI controller support

Ray Jui (1):
irqchip/gic-v2m: Add workaround for Broadcom NS2 GICv2m erratum

Shanker Donthineni (1):
irqchip/gicv3-its: Don't allow devices whose ID is outside range

Vladimir Zapolskiy (1):
irqchip: Add LPC32xx interrupt controller driver

Will Deacon (1):
irqchip/gic: Ensure ordering between read of INTACK and shared data

.../interrupt-controller/fsl,ls-scfg-msi.txt | 30 ++
arch/arm/Kconfig | 2 +
arch/arm/mach-lpc32xx/phy3250.c | 1 -
drivers/irqchip/Kconfig | 5 +
drivers/irqchip/Makefile | 2 +
drivers/irqchip/irq-alpine-msi.c | 2 +-
drivers/irqchip/irq-bcm2836.c | 10 +-
drivers/irqchip/irq-crossbar.c | 2 +-
drivers/irqchip/irq-gic-common.c | 20 +-
drivers/irqchip/irq-gic-v2m.c | 19 +-
drivers/irqchip/irq-gic-v3-its.c | 42 ++-
drivers/irqchip/irq-gic-v3.c | 19 ++
drivers/irqchip/irq-gic.c | 322 +++++++++++++--------
drivers/irqchip/irq-lpc32xx.c | 238 +++++++++++++++
drivers/irqchip/irq-ls-scfg-msi.c | 240 +++++++++++++++
drivers/irqchip/irq-mbigen.c | 4 +-
drivers/irqchip/irq-tegra.c | 2 +-
include/linux/irqchip/arm-gic-v3.h | 2 -
kernel/irq/manage.c | 2 +-
19 files changed, 827 insertions(+), 137 deletions(-)
create mode 100644 Documentation/devicetree/bindings/interrupt-controller/fsl,ls-scfg-msi.txt
create mode 100644 drivers/irqchip/irq-lpc32xx.c
create mode 100644 drivers/irqchip/irq-ls-scfg-msi.c

diff --cc drivers/irqchip/Kconfig
index 81f88ad,2f115be..0000000
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@@ -246,10 -246,11 +246,16 @@@ config MVEBU_ODM
bool
select GENERIC_MSI_IRQ_DOMAIN

+config LS_SCFG_MSI
+ def_bool y if SOC_LS1021A || ARCH_LAYERSCAPE
+ depends on PCI && PCI_MSI
+ select PCI_MSI_IRQ_DOMAIN
+
+ config EZNPS_GIC
+ bool "NPS400 Global Interrupt Manager (GIM)"
+ select IRQ_DOMAIN
+ help
+ Support the EZchip NPS400 global interrupt controller
+
config PARTITION_PERCPU
bool
diff --cc drivers/irqchip/Makefile
index f828244,f475986..0000000
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@@ -67,4 -66,4 +67,5 @@@ obj-$(CONFIG_INGENIC_IRQ) += irq-ingen
obj-$(CONFIG_IMX_GPCV2) += irq-imx-gpcv2.o
obj-$(CONFIG_PIC32_EVIC) += irq-pic32-evic.o
obj-$(CONFIG_MVEBU_ODMI) += irq-mvebu-odmi.o
+obj-$(CONFIG_LS_SCFG_MSI) += irq-ls-scfg-msi.o
+ obj-$(CONFIG_EZNPS_GIC) += irq-eznps.o
diff --cc drivers/irqchip/irq-gic.c
index 113e2d0,30d05a4..0000000
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@@ -486,9 -491,8 +488,10 @@@ static int gic_cpu_init(struct gic_chip
/*
* Get what the GIC says our CPU mask is.
*/
- BUG_ON(cpu >= NR_GIC_CPU_IF);
+ if (WARN_ON(cpu >= NR_GIC_CPU_IF))
+ return -EINVAL;
+
+ gic_check_cpu_features();
cpu_mask = gic_get_cpumask(gic);
gic_cpu_map[cpu] = cpu_mask;

@@@ -1029,28 -1014,24 +1032,26 @@@ static const struct irq_domain_ops gic_
.unmap = gic_irq_domain_unmap,
};

-static void __init __gic_init_bases(unsigned int gic_nr, int irq_start,
- void __iomem *dist_base, void __iomem *cpu_base,
- u32 percpu_offset, struct fwnode_handle *handle)
+static int __init __gic_init_bases(struct gic_chip_data *gic, int irq_start,
+ struct fwnode_handle *handle)
{
irq_hw_number_t hwirq_base;
- struct gic_chip_data *gic;
- int gic_irqs, irq_base, i;
-
- BUG_ON(gic_nr >= CONFIG_ARM_GIC_MAX_NR);
+ int gic_irqs, irq_base, i, ret;

- gic = &gic_data[gic_nr];
+ if (WARN_ON(!gic || gic->domain))
+ return -EINVAL;

- gic_check_cpu_features();
/* Initialize irq_chip */
- if (static_key_true(&supports_deactivate) && gic_nr == 0) {
- gic->chip = gic_eoimode1_chip;
+ gic->chip = gic_chip;
+
+ if (static_key_true(&supports_deactivate) && gic == &gic_data[0]) {
+ gic->chip.irq_mask = gic_eoimode1_mask_irq;
+ gic->chip.irq_eoi = gic_eoimode1_eoi_irq;
+ gic->chip.irq_set_vcpu_affinity = gic_irq_set_vcpu_affinity;
+ gic->chip.name = kasprintf(GFP_KERNEL, "GICv2");
} else {
- gic->chip = gic_chip;
- gic->chip.name = kasprintf(GFP_KERNEL, "GIC-%d", gic_nr);
+ gic->chip.name = kasprintf(GFP_KERNEL, "GIC-%d",
+ (int)(gic - &gic_data[0]));
}

#ifdef CONFIG_SMP
@@@ -1249,30 -1190,29 +1250,53 @@@ static bool gic_check_eoimode(struct de
return true;
}

+static int gic_of_setup(struct gic_chip_data *gic, struct device_node *node)
+{
+ if (!gic || !node)
+ return -EINVAL;
+
+ gic->raw_dist_base = of_iomap(node, 0);
+ if (WARN(!gic->raw_dist_base, "unable to map gic dist registers\n"))
+ goto error;
+
+ gic->raw_cpu_base = of_iomap(node, 1);
+ if (WARN(!gic->raw_cpu_base, "unable to map gic cpu registers\n"))
+ goto error;
+
+ if (of_property_read_u32(node, "cpu-offset", &gic->percpu_offset))
+ gic->percpu_offset = 0;
+
+ return 0;
+
+error:
+ gic_teardown(gic);
+
+ return -ENOMEM;
+}
+
+ static void __init gic_of_setup_kvm_info(struct device_node *node)
+ {
+ int ret;
+ struct resource *vctrl_res = &gic_v2_kvm_info.vctrl;
+ struct resource *vcpu_res = &gic_v2_kvm_info.vcpu;
+
+ gic_v2_kvm_info.type = GIC_V2;
+
+ gic_v2_kvm_info.maint_irq = irq_of_parse_and_map(node, 0);
+ if (!gic_v2_kvm_info.maint_irq)
+ return;
+
+ ret = of_address_to_resource(node, 2, vctrl_res);
+ if (ret)
+ return;
+
+ ret = of_address_to_resource(node, 3, vcpu_res);
+ if (ret)
+ return;
+
+ gic_set_kvm_info(&gic_v2_kvm_info);
+ }
+
int __init
gic_of_init(struct device_node *node, struct device_node *parent)
{
@@@ -1295,17 -1234,18 +1319,19 @@@
* Disable split EOI/Deactivate if either HYP is not available
* or the CPU interface is too small.
*/
- if (gic_cnt == 0 && !gic_check_eoimode(node, &cpu_base))
+ if (gic_cnt == 0 && !gic_check_eoimode(node, &gic->raw_cpu_base))
static_key_slow_dec(&supports_deactivate);

- if (of_property_read_u32(node, "cpu-offset", &percpu_offset))
- percpu_offset = 0;
+ ret = __gic_init_bases(gic, -1, &node->fwnode);
+ if (ret) {
+ gic_teardown(gic);
+ return ret;
+ }

- if (!gic_cnt)
- __gic_init_bases(gic_cnt, -1, dist_base, cpu_base, percpu_offset,
- &node->fwnode);
+ if (!gic_cnt) {
gic_init_physaddr(node);
+ gic_of_setup_kvm_info(node);
+ }

if (parent) {
irq = irq_of_parse_and_map(node, 0);
@@@ -1402,8 -1390,8 +1476,8 @@@ static int __init gic_v2_acpi_init(stru
return -EINVAL;
}

- gic->raw_cpu_base = ioremap(cpu_phy_base, ACPI_GIC_CPU_IF_MEM_SIZE);
- cpu_base = ioremap(acpi_data.cpu_phys_base, ACPI_GIC_CPU_IF_MEM_SIZE);
- if (!cpu_base) {
++ gic->raw_cpu_base = ioremap(acpi_data.cpu_phys_base, ACPI_GIC_CPU_IF_MEM_SIZE);
+ if (!gic->raw_cpu_base) {
pr_err("Unable to map GICC registers\n");
return -ENOMEM;
}

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