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authorLinus Torvalds <torvalds@linux-foundation.org>2018-04-04 15:19:26 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-04-04 15:19:26 -0700
commit5b1f3dc927a2681cb339b05156f828f83bfa1b80 (patch)
tree7526719ba0a52b35e40ef0df51b39bf6a9c84471 /include
parent680014d6d1da84e9c7860831221ec74230721907 (diff)
parent83fbdf1c0595470d98ee99a6474099aee870640f (diff)
downloadlinux-5b1f3dc927a2681cb339b05156f828f83bfa1b80.tar.bz2
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq updates from Thomas Gleixner: "The usual pile of boring changes: - Consolidate tasklet functions to share code instead of duplicating it - The first step for making the low level entry handler management on multi-platform kernels generic - A new sysfs file which allows to retrieve the wakeup state of interrupts. - Ensure that the interrupt thread follows the effective affinity and not the programmed affinity to avoid cross core wakeups. - Two new interrupt controller drivers (Microsemi Ocelot and Qualcomm PDC) - Fix the wakeup path clock handling for Reneasas interrupt chips. - Rework the boot time register reset for ARM GIC-V2/3 - Better suspend/resume support for ARM GIV-V3/ITS - Add missing locking to the ARM GIC set_type() callback - Small fixes for the irq simulator code - SPDX identifiers for the irq core code and removal of boiler plate - Small cleanups all over the place" * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits) openrisc: Set CONFIG_MULTI_IRQ_HANDLER arm64: Set CONFIG_MULTI_IRQ_HANDLER genirq: Make GENERIC_IRQ_MULTI_HANDLER depend on !MULTI_IRQ_HANDLER irqchip/gic: Take lock when updating irq type irqchip/gic: Update supports_deactivate static key to modern api irqchip/gic-v3: Ensure GICR_CTLR.EnableLPI=0 is observed before enabling irqchip: Add a driver for the Microsemi Ocelot controller dt-bindings: interrupt-controller: Add binding for the Microsemi Ocelot interrupt controller irqchip/gic-v3: Probe for SCR_EL3 being clear before resetting AP0Rn irqchip/gic-v3: Don't try to reset AP0Rn irqchip/gic-v3: Do not check trigger configuration of partitionned LPIs genirq: Remove license boilerplate/references genirq: Add missing SPDX identifiers genirq/matrix: Cleanup SPDX identifier genirq: Cleanup top of file comments genirq: Pass desc to __irq_free instead of irq number irqchip/gic-v3: Loudly complain about the use of IRQ_TYPE_NONE irqchip/gic: Loudly complain about the use of IRQ_TYPE_NONE RISC-V: Move to the new GENERIC_IRQ_MULTI_HANDLER handler genirq: Add CONFIG_GENERIC_IRQ_MULTI_HANDLER ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/irq.h23
-rw-r--r--include/linux/irqchip/arm-gic-v3.h4
2 files changed, 21 insertions, 6 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h
index a0231e96a578..65916a305f3d 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -10,18 +10,13 @@
* Thanks. --rmk
*/
-#include <linux/smp.h>
-#include <linux/linkage.h>
#include <linux/cache.h>
#include <linux/spinlock.h>
#include <linux/cpumask.h>
-#include <linux/gfp.h>
#include <linux/irqhandler.h>
#include <linux/irqreturn.h>
#include <linux/irqnr.h>
-#include <linux/errno.h>
#include <linux/topology.h>
-#include <linux/wait.h>
#include <linux/io.h>
#include <linux/slab.h>
@@ -1170,4 +1165,22 @@ int __ipi_send_mask(struct irq_desc *desc, const struct cpumask *dest);
int ipi_send_single(unsigned int virq, unsigned int cpu);
int ipi_send_mask(unsigned int virq, const struct cpumask *dest);
+#ifdef CONFIG_GENERIC_IRQ_MULTI_HANDLER
+/*
+ * Registers a generic IRQ handling function as the top-level IRQ handler in
+ * the system, which is generally the first C code called from an assembly
+ * architecture-specific interrupt handler.
+ *
+ * Returns 0 on success, or -EBUSY if an IRQ handler has already been
+ * registered.
+ */
+int __init set_handle_irq(void (*handle_irq)(struct pt_regs *));
+
+/*
+ * Allows interrupt handlers to find the irqchip that's been registered as the
+ * top-level IRQ handler.
+ */
+extern void (*handle_arch_irq)(struct pt_regs *) __ro_after_init;
+#endif
+
#endif /* _LINUX_IRQ_H */
diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h
index b26eccc78fb1..f5af3b594e6e 100644
--- a/include/linux/irqchip/arm-gic-v3.h
+++ b/include/linux/irqchip/arm-gic-v3.h
@@ -106,6 +106,7 @@
#define GICR_PIDR2 GICD_PIDR2
#define GICR_CTLR_ENABLE_LPIS (1UL << 0)
+#define GICR_CTLR_RWP (1UL << 3)
#define GICR_TYPER_CPU_NUMBER(r) (((r) >> 8) & 0xffff)
@@ -312,7 +313,8 @@
#define GITS_TYPER_DEVBITS_SHIFT 13
#define GITS_TYPER_DEVBITS(r) ((((r) >> GITS_TYPER_DEVBITS_SHIFT) & 0x1f) + 1)
#define GITS_TYPER_PTA (1UL << 19)
-#define GITS_TYPER_HWCOLLCNT_SHIFT 24
+#define GITS_TYPER_HCC_SHIFT 24
+#define GITS_TYPER_HCC(r) (((r) >> GITS_TYPER_HCC_SHIFT) & 0xff)
#define GITS_TYPER_VMOVP (1ULL << 37)
#define GITS_IIDR_REV_SHIFT 12