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-rw-r--r--Documentation/devicetree/bindings/interrupt-controller/amlogic,meson-gpio-intc.txt1
-rw-r--r--Documentation/devicetree/bindings/interrupt-controller/apple,aic2.yaml98
-rw-r--r--Documentation/devicetree/bindings/interrupt-controller/qcom,mpm.yaml96
-rw-r--r--Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.yaml1
-rw-r--r--MAINTAINERS2
-rw-r--r--arch/microblaze/Kconfig2
-rw-r--r--arch/microblaze/include/asm/irq.h3
-rw-r--r--arch/microblaze/kernel/irq.c16
-rw-r--r--drivers/gpio/gpio-mt7621.c1
-rw-r--r--drivers/gpio/gpio-omap.c7
-rw-r--r--drivers/gpio/gpio-rcar.c2
-rw-r--r--drivers/gpio/gpio-tqmx86.c3
-rw-r--r--drivers/irqchip/Kconfig8
-rw-r--r--drivers/irqchip/Makefile1
-rw-r--r--drivers/irqchip/irq-apple-aic.c465
-rw-r--r--drivers/irqchip/irq-ftintc010.c1
-rw-r--r--drivers/irqchip/irq-gic-v3.c2
-rw-r--r--drivers/irqchip/irq-gic.c104
-rw-r--r--drivers/irqchip/irq-imx-intmux.c8
-rw-r--r--drivers/irqchip/irq-lpc32xx.c34
-rw-r--r--drivers/irqchip/irq-meson-gpio.c106
-rw-r--r--drivers/irqchip/irq-mvebu-pic.c28
-rw-r--r--drivers/irqchip/irq-nvic.c2
-rw-r--r--drivers/irqchip/irq-qcom-mpm.c461
-rw-r--r--drivers/irqchip/irq-renesas-intc-irqpin.c3
-rw-r--r--drivers/irqchip/irq-renesas-irqc.c3
-rw-r--r--drivers/irqchip/irq-sifive-plic.c38
-rw-r--r--drivers/irqchip/irq-stm32-exti.c50
-rw-r--r--drivers/irqchip/irq-ts4800.c25
-rw-r--r--drivers/irqchip/irq-versatile-fpga.c46
-rw-r--r--drivers/irqchip/irq-xilinx-intc.c30
-rw-r--r--drivers/irqchip/qcom-pdc.c137
-rw-r--r--drivers/mfd/ezx-pcap.c4
-rw-r--r--drivers/misc/hi6421v600-irq.c6
-rw-r--r--drivers/net/usb/lan78xx.c7
-rw-r--r--drivers/pci/controller/pcie-apple.c2
-rw-r--r--drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c25
-rw-r--r--drivers/pinctrl/pinctrl-starfive.c4
-rw-r--r--drivers/staging/greybus/gpio.c5
-rw-r--r--include/linux/irq.h9
-rw-r--r--include/linux/irqchip/versatile-fpga.h14
-rw-r--r--include/linux/irqdesc.h1
-rw-r--r--include/linux/irqdomain.h15
-rw-r--r--kernel/irq/chip.c29
-rw-r--r--kernel/irq/debugfs.c8
-rw-r--r--kernel/irq/irqdesc.c27
-rw-r--r--kernel/irq/irqdomain.c9
-rw-r--r--kernel/softirq.c10
48 files changed, 1510 insertions, 449 deletions
diff --git a/Documentation/devicetree/bindings/interrupt-controller/amlogic,meson-gpio-intc.txt b/Documentation/devicetree/bindings/interrupt-controller/amlogic,meson-gpio-intc.txt
index 23b18b92c558..bde63f8f090e 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/amlogic,meson-gpio-intc.txt
+++ b/Documentation/devicetree/bindings/interrupt-controller/amlogic,meson-gpio-intc.txt
@@ -18,6 +18,7 @@ Required properties:
"amlogic,meson-g12a-gpio-intc" for G12A SoCs (S905D2, S905X2, S905Y2)
"amlogic,meson-sm1-gpio-intc" for SM1 SoCs (S905D3, S905X3, S905Y3)
"amlogic,meson-a1-gpio-intc" for A1 SoCs (A113L)
+ "amlogic,meson-s4-gpio-intc" for S4 SoCs (S802X2, S905Y4, S805X2G, S905W2)
- reg : Specifies base physical address and size of the registers.
- interrupt-controller : Identifies the node as an interrupt controller.
- #interrupt-cells : Specifies the number of cells needed to encode an
diff --git a/Documentation/devicetree/bindings/interrupt-controller/apple,aic2.yaml b/Documentation/devicetree/bindings/interrupt-controller/apple,aic2.yaml
new file mode 100644
index 000000000000..47a78a167aba
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/apple,aic2.yaml
@@ -0,0 +1,98 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/apple,aic2.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Apple Interrupt Controller 2
+
+maintainers:
+ - Hector Martin <marcan@marcan.st>
+
+description: |
+ The Apple Interrupt Controller 2 is a simple interrupt controller present on
+ Apple ARM SoC platforms starting with t600x (M1 Pro and Max).
+
+ It provides the following features:
+
+ - Level-triggered hardware IRQs wired to SoC blocks
+ - Single mask bit per IRQ
+ - Automatic masking on event delivery (auto-ack)
+ - Software triggering (ORed with hw line)
+ - Automatic prioritization (single event/ack register per CPU, lower IRQs =
+ higher priority)
+ - Automatic masking on ack
+ - Support for multiple dies
+
+ This device also represents the FIQ interrupt sources on platforms using AIC,
+ which do not go through a discrete interrupt controller. It also handles
+ FIQ-based Fast IPIs.
+
+properties:
+ compatible:
+ items:
+ - const: apple,t6000-aic
+ - const: apple,aic2
+
+ interrupt-controller: true
+
+ '#interrupt-cells':
+ const: 4
+ description: |
+ The 1st cell contains the interrupt type:
+ - 0: Hardware IRQ
+ - 1: FIQ
+
+ The 2nd cell contains the die ID.
+
+ The next cell contains the interrupt number.
+ - HW IRQs: interrupt number
+ - FIQs:
+ - 0: physical HV timer
+ - 1: virtual HV timer
+ - 2: physical guest timer
+ - 3: virtual guest timer
+
+ The last cell contains the interrupt flags. This is normally
+ IRQ_TYPE_LEVEL_HIGH (4).
+
+ reg:
+ items:
+ - description: Address and size of the main AIC2 registers.
+ - description: Address and size of the AIC2 Event register.
+
+ reg-names:
+ items:
+ - const: core
+ - const: event
+
+ power-domains:
+ maxItems: 1
+
+required:
+ - compatible
+ - '#interrupt-cells'
+ - interrupt-controller
+ - reg
+ - reg-names
+
+additionalProperties: false
+
+allOf:
+ - $ref: /schemas/interrupt-controller.yaml#
+
+examples:
+ - |
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ aic: interrupt-controller@28e100000 {
+ compatible = "apple,t6000-aic", "apple,aic2";
+ #interrupt-cells = <4>;
+ interrupt-controller;
+ reg = <0x2 0x8e100000 0x0 0xc000>,
+ <0x2 0x8e10c000 0x0 0x4>;
+ reg-names = "core", "event";
+ };
+ };
diff --git a/Documentation/devicetree/bindings/interrupt-controller/qcom,mpm.yaml b/Documentation/devicetree/bindings/interrupt-controller/qcom,mpm.yaml
new file mode 100644
index 000000000000..509d20c091af
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/qcom,mpm.yaml
@@ -0,0 +1,96 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/qcom,mpm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcom MPM Interrupt Controller
+
+maintainers:
+ - Shawn Guo <shawn.guo@linaro.org>
+
+description:
+ Qualcomm Technologies Inc. SoCs based on the RPM architecture have a
+ MSM Power Manager (MPM) that is in always-on domain. In addition to managing
+ resources during sleep, the hardware also has an interrupt controller that
+ monitors the interrupts when the system is asleep, wakes up the APSS when
+ one of these interrupts occur and replays it to GIC interrupt controller
+ after GIC becomes operational.
+
+allOf:
+ - $ref: /schemas/interrupt-controller.yaml#
+
+properties:
+ compatible:
+ items:
+ - const: qcom,mpm
+
+ reg:
+ maxItems: 1
+ description:
+ Specifies the base address and size of vMPM registers in RPM MSG RAM.
+
+ interrupts:
+ maxItems: 1
+ description:
+ Specify the IRQ used by RPM to wakeup APSS.
+
+ mboxes:
+ maxItems: 1
+ description:
+ Specify the mailbox used to notify RPM for writing vMPM registers.
+
+ interrupt-controller: true
+
+ '#interrupt-cells':
+ const: 2
+ description:
+ The first cell is the MPM pin number for the interrupt, and the second
+ is the trigger type.
+
+ qcom,mpm-pin-count:
+ description:
+ Specify the total MPM pin count that a SoC supports.
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ qcom,mpm-pin-map:
+ description:
+ A set of MPM pin numbers and the corresponding GIC SPIs.
+ $ref: /schemas/types.yaml#/definitions/uint32-matrix
+ items:
+ items:
+ - description: MPM pin number
+ - description: GIC SPI number for the MPM pin
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - mboxes
+ - interrupt-controller
+ - '#interrupt-cells'
+ - qcom,mpm-pin-count
+ - qcom,mpm-pin-map
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ mpm: interrupt-controller@45f01b8 {
+ compatible = "qcom,mpm";
+ interrupts = <GIC_SPI 197 IRQ_TYPE_EDGE_RISING>;
+ reg = <0x45f01b8 0x1000>;
+ mboxes = <&apcs_glb 1>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupt-parent = <&intc>;
+ qcom,mpm-pin-count = <96>;
+ qcom,mpm-pin-map = <2 275>,
+ <5 296>,
+ <12 422>,
+ <24 79>,
+ <86 183>,
+ <90 260>,
+ <91 260>;
+ };
diff --git a/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.yaml b/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.yaml
index d19c881b4abc..e44daa09b137 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.yaml
@@ -20,6 +20,7 @@ properties:
- items:
- enum:
- st,stm32mp1-exti
+ - st,stm32mp13-exti
- const: syscon
"#interrupt-cells":
diff --git a/MAINTAINERS b/MAINTAINERS
index f092ad6d5212..0bbdd40cb23f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1769,7 +1769,7 @@ T: git https://github.com/AsahiLinux/linux.git
F: Documentation/devicetree/bindings/arm/apple.yaml
F: Documentation/devicetree/bindings/arm/apple/*
F: Documentation/devicetree/bindings/i2c/apple,i2c.yaml
-F: Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml
+F: Documentation/devicetree/bindings/interrupt-controller/apple,*
F: Documentation/devicetree/bindings/mailbox/apple,mailbox.yaml
F: Documentation/devicetree/bindings/pci/apple,pcie.yaml
F: Documentation/devicetree/bindings/pinctrl/apple,pinctrl.yaml
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 59798e43cdb0..da568e981604 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -45,6 +45,8 @@ config MICROBLAZE
select SET_FS
select ZONE_DMA
select TRACE_IRQFLAGS_SUPPORT
+ select GENERIC_IRQ_MULTI_HANDLER
+ select HANDLE_DOMAIN_IRQ
# Endianness selection
choice
diff --git a/arch/microblaze/include/asm/irq.h b/arch/microblaze/include/asm/irq.h
index 0a28e80bbab0..cb6ab55d1d01 100644
--- a/arch/microblaze/include/asm/irq.h
+++ b/arch/microblaze/include/asm/irq.h
@@ -11,7 +11,4 @@
struct pt_regs;
extern void do_IRQ(struct pt_regs *regs);
-/* should be defined in each interrupt controller driver */
-extern unsigned int xintc_get_irq(void);
-
#endif /* _ASM_MICROBLAZE_IRQ_H */
diff --git a/arch/microblaze/kernel/irq.c b/arch/microblaze/kernel/irq.c
index 903dad822fad..1f8cb4c4f74f 100644
--- a/arch/microblaze/kernel/irq.c
+++ b/arch/microblaze/kernel/irq.c
@@ -20,27 +20,13 @@
#include <linux/irqchip.h>
#include <linux/of_irq.h>
-static u32 concurrent_irq;
-
void __irq_entry do_IRQ(struct pt_regs *regs)
{
- unsigned int irq;
struct pt_regs *old_regs = set_irq_regs(regs);
trace_hardirqs_off();
irq_enter();
- irq = xintc_get_irq();
-next_irq:
- BUG_ON(!irq);
- generic_handle_irq(irq);
-
- irq = xintc_get_irq();
- if (irq != -1U) {
- pr_debug("next irq: %d\n", irq);
- ++concurrent_irq;
- goto next_irq;
- }
-
+ handle_arch_irq(regs);
irq_exit();
set_irq_regs(old_regs);
trace_hardirqs_on();
diff --git a/drivers/gpio/gpio-mt7621.c b/drivers/gpio/gpio-mt7621.c
index ccaad1cb3c2e..d8a26e503ca5 100644
--- a/drivers/gpio/gpio-mt7621.c
+++ b/drivers/gpio/gpio-mt7621.c
@@ -239,7 +239,6 @@ mediatek_gpio_bank_probe(struct device *dev, int bank)
rg->chip.offset = bank * MTK_BANK_WIDTH;
rg->irq_chip.name = dev_name(dev);
- rg->irq_chip.parent_device = dev;
rg->irq_chip.irq_unmask = mediatek_gpio_irq_unmask;
rg->irq_chip.irq_mask = mediatek_gpio_irq_mask;
rg->irq_chip.irq_mask_ack = mediatek_gpio_irq_mask;
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index e099c39e0355..80ddc43fd875 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -986,7 +986,8 @@ static void omap_gpio_mod_init(struct gpio_bank *bank)
writel_relaxed(0, base + bank->regs->ctrl);
}
-static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc)
+static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc,
+ struct device *pm_dev)
{
struct gpio_irq_chip *irq;
static int gpio;
@@ -1052,6 +1053,7 @@ static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc)
if (ret)
return dev_err_probe(bank->chip.parent, ret, "Could not register gpio chip\n");
+ irq_domain_set_pm_device(bank->chip.irq.domain, pm_dev);
ret = devm_request_irq(bank->chip.parent, bank->irq,
omap_gpio_irq_handler,
0, dev_name(bank->chip.parent), bank);
@@ -1402,7 +1404,6 @@ static int omap_gpio_probe(struct platform_device *pdev)
irqc->irq_bus_sync_unlock = gpio_irq_bus_sync_unlock,
irqc->name = dev_name(&pdev->dev);
irqc->flags = IRQCHIP_MASK_ON_SUSPEND;
- irqc->parent_device = dev;
bank->irq = platform_get_irq(pdev, 0);
if (bank->irq <= 0) {
@@ -1466,7 +1467,7 @@ static int omap_gpio_probe(struct platform_device *pdev)
omap_gpio_mod_init(bank);
- ret = omap_gpio_chip_init(bank, irqc);
+ ret = omap_gpio_chip_init(bank, irqc, dev);
if (ret) {
pm_runtime_put_sync(dev);
pm_runtime_disable(dev);
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index bd2e16d6e21c..3a76538f27fa 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -530,7 +530,6 @@ static int gpio_rcar_probe(struct platform_device *pdev)
irq_chip = &p->irq_chip;
irq_chip->name = "gpio-rcar";
- irq_chip->parent_device = dev;
irq_chip->irq_mask = gpio_rcar_irq_disable;
irq_chip->irq_unmask = gpio_rcar_irq_enable;
irq_chip->irq_set_type = gpio_rcar_irq_set_type;
@@ -552,6 +551,7 @@ static int gpio_rcar_probe(struct platform_device *pdev)
goto err0;
}
+ irq_domain_set_pm_device(gpio_chip->irq.domain, dev);
ret = devm_request_irq(dev, p->irq_parent, gpio_rcar_irq_handler,
IRQF_SHARED, name, p);
if (ret) {
diff --git a/drivers/gpio/gpio-tqmx86.c b/drivers/gpio/gpio-tqmx86.c
index 5b103221b58d..fa4bc7481f9a 100644
--- a/drivers/gpio/gpio-tqmx86.c
+++ b/drivers/gpio/gpio-tqmx86.c
@@ -281,7 +281,6 @@ static int tqmx86_gpio_probe(struct platform_device *pdev)
u8 irq_status;
irq_chip->name = chip->label;
- irq_chip->parent_device = &pdev->dev;
irq_chip->irq_mask = tqmx86_gpio_irq_mask;
irq_chip->irq_unmask = tqmx86_gpio_irq_unmask;
irq_chip->irq_set_type = tqmx86_gpio_irq_set_type;
@@ -316,6 +315,8 @@ static int tqmx86_gpio_probe(struct platform_device *pdev)
goto out_pm_dis;
}
+ irq_domain_set_pm_device(girq->domain, dev);
+
dev_info(dev, "GPIO functionality initialized with %d pins\n",
chip->ngpio);
diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index 7038957f4a77..680d2fcf2686 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -430,6 +430,14 @@ config QCOM_PDC
Power Domain Controller driver to manage and configure wakeup
IRQs for Qualcomm Technologies Inc (QTI) mobile chips.
+config QCOM_MPM
+ tristate "QCOM MPM"
+ depends on ARCH_QCOM
+ select IRQ_DOMAIN_HIERARCHY
+ help
+ MSM Power Manager driver to manage and configure wakeup
+ IRQs for Qualcomm Technologies Inc (QTI) mobile chips.
+
config CSKY_MPINTC
bool
depends on CSKY
diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index c1f611cbfbf8..1f8990f812f1 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -94,6 +94,7 @@ obj-$(CONFIG_MESON_IRQ_GPIO) += irq-meson-gpio.o
obj-$(CONFIG_GOLDFISH_PIC) += irq-goldfish-pic.o
obj-$(CONFIG_NDS32) += irq-ativic32.o
obj-$(CONFIG_QCOM_PDC) += qcom-pdc.o
+obj-$(CONFIG_QCOM_MPM) += irq-qcom-mpm.o
obj-$(CONFIG_CSKY_MPINTC) += irq-csky-mpintc.o
obj-$(CONFIG_CSKY_APB_INTC) += irq-csky-apb-intc.o
obj-$(CONFIG_RISCV_INTC) += irq-riscv-intc.o
diff --git a/drivers/irqchip/irq-apple-aic.c b/drivers/irqchip/irq-apple-aic.c
index b40199c6625e..12dd48727a15 100644
--- a/drivers/irqchip/irq-apple-aic.c
+++ b/drivers/irqchip/irq-apple-aic.c
@@ -24,7 +24,7 @@
* - Default "this CPU" register view and explicit per-CPU views
*
* In addition, this driver also handles FIQs, as these are routed to the same
- * IRQ vector. These are used for Fast IPIs (TODO), the ARMv8 timer IRQs, and
+ * IRQ vector. These are used for Fast IPIs, the ARMv8 timer IRQs, and
* performance counters (TODO).
*
* Implementation notes:
@@ -52,10 +52,12 @@
#include <linux/irqchip.h>
#include <linux/irqchip/arm-vgic-info.h>
#include <linux/irqdomain.h>
+#include <linux/jump_label.h>
#include <linux/limits.h>
#include <linux/of_address.h>
#include <linux/slab.h>
#include <asm/apple_m1_pmu.h>
+#include <asm/cputype.h>
#include <asm/exception.h>
#include <asm/sysreg.h>
#include <asm/virt.h>
@@ -63,20 +65,22 @@
#include <dt-bindings/interrupt-controller/apple-aic.h>
/*
- * AIC registers (MMIO)
+ * AIC v1 registers (MMIO)
*/
#define AIC_INFO 0x0004
-#define AIC_INFO_NR_HW GENMASK(15, 0)
+#define AIC_INFO_NR_IRQ GENMASK(15, 0)
#define AIC_CONFIG 0x0010
#define AIC_WHOAMI 0x2000
#define AIC_EVENT 0x2004
-#define AIC_EVENT_TYPE GENMASK(31, 16)
+#define AIC_EVENT_DIE GENMASK(31, 24)
+#define AIC_EVENT_TYPE GENMASK(23, 16)
#define AIC_EVENT_NUM GENMASK(15, 0)
-#define AIC_EVENT_TYPE_HW 1
+#define AIC_EVENT_TYPE_FIQ 0 /* Software use */
+#define AIC_EVENT_TYPE_IRQ 1
#define AIC_EVENT_TYPE_IPI 4
#define AIC_EVENT_IPI_OTHER 1
#define AIC_EVENT_IPI_SELF 2
@@ -92,22 +96,71 @@
#define AIC_IPI_SELF BIT(31)
#define AIC_TARGET_CPU 0x3000
-#define AIC_SW_SET 0x4000
-#define AIC_SW_CLR 0x4080
-#define AIC_MASK_SET 0x4100
-#define AIC_MASK_CLR 0x4180
#define AIC_CPU_IPI_SET(cpu) (0x5008 + ((cpu) << 7))
#define AIC_CPU_IPI_CLR(cpu) (0x500c + ((cpu) << 7))
#define AIC_CPU_IPI_MASK_SET(cpu) (0x5024 + ((cpu) << 7))
#define AIC_CPU_IPI_MASK_CLR(cpu) (0x5028 + ((cpu) << 7))
+#define AIC_MAX_IRQ 0x400
+
+/*
+ * AIC v2 registers (MMIO)
+ */
+
+#define AIC2_VERSION 0x0000
+#define AIC2_VERSION_VER GENMASK(7, 0)
+
+#define AIC2_INFO1 0x0004
+#define AIC2_INFO1_NR_IRQ GENMASK(15, 0)
+#define AIC2_INFO1_LAST_DIE GENMASK(27, 24)
+
+#define AIC2_INFO2 0x0008
+
+#define AIC2_INFO3 0x000c
+#define AIC2_INFO3_MAX_IRQ GENMASK(15, 0)
+#define AIC2_INFO3_MAX_DIE GENMASK(27, 24)
+
+#define AIC2_RESET 0x0010
+#define AIC2_RESET_RESET BIT(0)
+
+#define AIC2_CONFIG 0x0014
+#define AIC2_CONFIG_ENABLE BIT(0)
+#define AIC2_CONFIG_PREFER_PCPU BIT(28)
+
+#define AIC2_TIMEOUT 0x0028
+#define AIC2_CLUSTER_PRIO 0x0030
+#define AIC2_DELAY_GROUPS 0x0100
+
+#define AIC2_IRQ_CFG 0x2000
+
+/*
+ * AIC2 registers are laid out like this, starting at AIC2_IRQ_CFG:
+ *
+ * Repeat for each die:
+ * IRQ_CFG: u32 * MAX_IRQS
+ * SW_SET: u32 * (MAX_IRQS / 32)
+ * SW_CLR: u32 * (MAX_IRQS / 32)
+ * MASK_SET: u32 * (MAX_IRQS / 32)
+ * MASK_CLR: u32 * (MAX_IRQS / 32)
+ * HW_STATE: u32 * (MAX_IRQS / 32)
+ *
+ * This is followed by a set of event registers, each 16K page aligned.
+ * The first one is the AP event register we will use. Unfortunately,
+ * the actual implemented die count is not specified anywhere in the
+ * capability registers, so we have to explicitly specify the event
+ * register as a second reg entry in the device tree to remain
+ * forward-compatible.
+ */
+
+#define AIC2_IRQ_CFG_TARGET GENMASK(3, 0)
+#define AIC2_IRQ_CFG_DELAY_IDX GENMASK(7, 5)
+
#define MASK_REG(x) (4 * ((x) >> 5))
#define MASK_BIT(x) BIT((x) & GENMASK(4, 0))
/*
* IMP-DEF sysregs that control FIQ sources
- * Note: sysreg-based IPIs are not supported yet.
*/
/* IPI request registers */
@@ -146,6 +199,17 @@
#define SYS_IMP_APL_UPMSR_EL1 sys_reg(3, 7, 15, 6, 4)
#define UPMSR_IACT BIT(0)
+/* MPIDR fields */
+#define MPIDR_CPU(x) MPIDR_AFFINITY_LEVEL(x, 0)
+#define MPIDR_CLUSTER(x) MPIDR_AFFINITY_LEVEL(x, 1)
+
+#define AIC_IRQ_HWIRQ(die, irq) (FIELD_PREP(AIC_EVENT_DIE, die) | \
+ FIELD_PREP(AIC_EVENT_TYPE, AIC_EVENT_TYPE_IRQ) | \
+ FIELD_PREP(AIC_EVENT_NUM, irq))
+#define AIC_FIQ_HWIRQ(x) (FIELD_PREP(AIC_EVENT_TYPE, AIC_EVENT_TYPE_FIQ) | \
+ FIELD_PREP(AIC_EVENT_NUM, x))
+#define AIC_HWIRQ_IRQ(x) FIELD_GET(AIC_EVENT_NUM, x)
+#define AIC_HWIRQ_DIE(x) FIELD_GET(AIC_EVENT_DIE, x)
#define AIC_NR_FIQ 6
#define AIC_NR_SWIPI 32
@@ -164,14 +228,81 @@
#define AIC_TMR_EL02_PHYS AIC_TMR_GUEST_PHYS
#define AIC_TMR_EL02_VIRT AIC_TMR_GUEST_VIRT
+DEFINE_STATIC_KEY_TRUE(use_fast_ipi);
+
+struct aic_info {
+ int version;
+
+ /* Register offsets */
+ u32 event;
+ u32 target_cpu;
+ u32 irq_cfg;
+ u32 sw_set;
+ u32 sw_clr;
+ u32 mask_set;
+ u32 mask_clr;
+
+ u32 die_stride;
+
+ /* Features */
+ bool fast_ipi;
+};
+
+static const struct aic_info aic1_info = {
+ .version = 1,
+
+ .event = AIC_EVENT,
+ .target_cpu = AIC_TARGET_CPU,
+};
+
+static const struct aic_info aic1_fipi_info = {
+ .version = 1,
+
+ .event = AIC_EVENT,
+ .target_cpu = AIC_TARGET_CPU,
+
+ .fast_ipi = true,
+};
+
+static const struct aic_info aic2_info = {
+ .version = 2,
+
+ .irq_cfg = AIC2_IRQ_CFG,
+
+ .fast_ipi = true,
+};
+
+static const struct of_device_id aic_info_match[] = {
+ {
+ .compatible = "apple,t8103-aic",
+ .data = &aic1_fipi_info,
+ },
+ {
+ .compatible = "apple,aic",
+ .data = &aic1_info,
+ },
+ {
+ .compatible = "apple,aic2",
+ .data = &aic2_info,
+ },
+ {}
+};
+
struct aic_irq_chip {
void __iomem *base;
+ void __iomem *event;
struct irq_domain *hw_domain;
struct irq_domain *ipi_domain;
struct {
cpumask_t aff;
} *fiq_aff[AIC_NR_FIQ];
- int nr_hw;
+
+ int nr_irq;
+ int max_irq;
+ int nr_die;
+ int max_die;
+
+ struct aic_info info;
};
static DEFINE_PER_CPU(uint32_t, aic_fiq_unmasked);
@@ -199,18 +330,24 @@ static void aic_ic_write(struct aic_irq_chip *ic, u32 reg, u32 val)
static void aic_irq_mask(struct irq_data *d)
{
+ irq_hw_number_t hwirq = irqd_to_hwirq(d);
struct aic_irq_chip *ic = irq_data_get_irq_chip_data(d);
- aic_ic_write(ic, AIC_MASK_SET + MASK_REG(irqd_to_hwirq(d)),
- MASK_BIT(irqd_to_hwirq(d)));
+ u32 off = AIC_HWIRQ_DIE(hwirq) * ic->info.die_stride;
+ u32 irq = AIC_HWIRQ_IRQ(hwirq);
+
+ aic_ic_write(ic, ic->info.mask_set + off + MASK_REG(irq), MASK_BIT(irq));
}
static void aic_irq_unmask(struct irq_data *d)
{
+ irq_hw_number_t hwirq = irqd_to_hwirq(d);
struct aic_irq_chip *ic = irq_data_get_irq_chip_data(d);
- aic_ic_write(ic, AIC_MASK_CLR + MASK_REG(d->hwirq),
- MASK_BIT(irqd_to_hwirq(d)));
+ u32 off = AIC_HWIRQ_DIE(hwirq) * ic->info.die_stride;
+ u32 irq = AIC_HWIRQ_IRQ(hwirq);
+
+ aic_ic_write(ic, ic->info.mask_clr + off + MASK_REG(irq), MASK_BIT(irq));
}
static void aic_irq_eoi(struct irq_data *d)
@@ -233,12 +370,12 @@ static void __exception_irq_entry aic_handle_irq(struct pt_regs *regs)
* We cannot use a relaxed read here, as reads from DMA buffers
* need to be ordered after the IRQ fires.
*/
- event = readl(ic->base + AIC_EVENT);
+ event = readl(ic->event + ic->info.event);
type = FIELD_GET(AIC_EVENT_TYPE, event);
irq = FIELD_GET(AIC_EVENT_NUM, event);
- if (type =