irqchip/ti-sci-inta: Add msi domain support (f011df61) · Commits · 戴 / test

drivers/irqchip/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -433,6 +433,7 @@ config TI_SCI_INTA_IRQCHIP
		bool
		depends on TI_SCI_PROTOCOL
		select IRQ_DOMAIN_HIERARCHY
		select TI_SCI_INTA_MSI_DOMAIN
		help
		This enables the irqchip driver support for K3 Interrupt aggregator
		over TI System Control Interface available on some new TI's SoCs.

drivers/irqchip/irq-ti-sci-inta.c

+39 −1

Original line number	Diff line number	Diff line
		@@ -18,6 +18,7 @@
		#include <linux/of_irq.h>
		#include <linux/of_platform.h>
		#include <linux/irqchip/chained_irq.h>
		#include <linux/soc/ti/ti_sci_inta_msi.h>
		#include <linux/soc/ti/ti_sci_protocol.h>
		#include <asm-generic/msi.h>

		@@ -28,6 +29,9 @@
		#define HWIRQ_TO_DEVID(hwirq) (((hwirq) >> (TI_SCI_DEV_ID_SHIFT)) & \
		(TI_SCI_DEV_ID_MASK))
		#define HWIRQ_TO_IRQID(hwirq) ((hwirq) & (TI_SCI_IRQ_ID_MASK))
		#define TO_HWIRQ(dev, index) ((((dev) & TI_SCI_DEV_ID_MASK) << \
		TI_SCI_DEV_ID_SHIFT) \| \
		((index) & TI_SCI_IRQ_ID_MASK))

		#define MAX_EVENTS_PER_VINT 64
		#define VINT_ENABLE_SET_OFFSET 0x0
		@@ -484,9 +488,34 @@ static const struct irq_domain_ops ti_sci_inta_irq_domain_ops = {
		.alloc = ti_sci_inta_irq_domain_alloc,
		};

		static struct irq_chip ti_sci_inta_msi_irq_chip = {
		.name = "MSI-INTA",
		.flags = IRQCHIP_SUPPORTS_LEVEL_MSI,
		};

		static void ti_sci_inta_msi_set_desc(msi_alloc_info_t *arg,
		struct msi_desc *desc)
		{
		struct platform_device *pdev = to_platform_device(desc->dev);

		arg->desc = desc;
		arg->hwirq = TO_HWIRQ(pdev->id, desc->inta.dev_index);
		}

		static struct msi_domain_ops ti_sci_inta_msi_ops = {
		.set_desc = ti_sci_inta_msi_set_desc,
		};

		static struct msi_domain_info ti_sci_inta_msi_domain_info = {
		.flags = (MSI_FLAG_USE_DEF_DOM_OPS \| MSI_FLAG_USE_DEF_CHIP_OPS \|
		MSI_FLAG_LEVEL_CAPABLE),
		.ops = &ti_sci_inta_msi_ops,
		.chip = &ti_sci_inta_msi_irq_chip,
		};

		static int ti_sci_inta_irq_domain_probe(struct platform_device *pdev)
		{
		struct irq_domain parent_domain, domain;
		struct irq_domain parent_domain, domain, *msi_domain;
		struct device_node parent_node, node;
		struct ti_sci_inta_irq_domain *inta;
		struct device *dev = &pdev->dev;
		@@ -551,6 +580,15 @@ static int ti_sci_inta_irq_domain_probe(struct platform_device *pdev)
		return -ENOMEM;
		}

		msi_domain = ti_sci_inta_msi_create_irq_domain(of_node_to_fwnode(node),
		&ti_sci_inta_msi_domain_info,
		domain);
		if (!msi_domain) {
		irq_domain_remove(domain);
		dev_err(dev, "Failed to allocate msi domain\n");
		return -ENOMEM;
		}

		INIT_LIST_HEAD(&inta->vint_list);
		mutex_init(&inta->vint_mutex);

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