Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 8fff27ae authored by Marc Zyngier's avatar Marc Zyngier
Browse files

irqchip/gic-v3-its: Add VPE domain infrastructure 



Add the basic GICv4 VPE (vcpu in GICv4 parlance) infrastructure
(irqchip, irq domain) that is going to be populated in the following
patches.

Reviewed-by: default avatarEric Auger <eric.auger@redhat.com>
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
parent 015ec038

drivers/irqchip/irq-gic-v3-its.c

+30 −1
Original line number Original line Diff line number Diff line
@@ -2032,6 +2032,13 @@ static const struct irq_domain_ops its_domain_ops = { 
	.deactivate		= its_irq_domain_deactivate,

	.deactivate		= its_irq_domain_deactivate,

};

};





static struct irq_chip its_vpe_irq_chip = {

	.name			= "GICv4-vpe",

};



static const struct irq_domain_ops its_vpe_domain_ops = {

};



static int its_force_quiescent(void __iomem *base)

static int its_force_quiescent(void __iomem *base)

{

{

	u32 count = 1000000;	/* 1s */

	u32 count = 1000000;	/* 1s */
@@ -2148,6 +2155,11 @@ static int its_init_domain(struct fwnode_handle *handle, struct its_node *its) 
	return 0;

	return 0;

}

}





static int its_init_vpe_domain(void)

{

	return 0;

}



static int __init its_compute_its_list_map(struct resource *res,

static int __init its_compute_its_list_map(struct resource *res,

					   void __iomem *its_base)

					   void __iomem *its_base)

{

{
@@ -2490,6 +2502,9 @@ int __init its_init(struct fwnode_handle *handle, struct rdists *rdists, 
		    struct irq_domain *parent_domain)

		    struct irq_domain *parent_domain)

{

{

	struct device_node *of_node;

	struct device_node *of_node;

	struct its_node *its;

	bool has_v4 = false;

	int err;





	its_parent = parent_domain;

	its_parent = parent_domain;

	of_node = to_of_node(handle);

	of_node = to_of_node(handle);
@@ -2504,5 +2519,19 @@ int __init its_init(struct fwnode_handle *handle, struct rdists *rdists, 
	}

	}





	gic_rdists = rdists;

	gic_rdists = rdists;

	return its_alloc_lpi_tables();

	err = its_alloc_lpi_tables();

	if (err)

		return err;



	list_for_each_entry(its, &its_nodes, entry)

		has_v4 |= its->is_v4;



	if (has_v4 & rdists->has_vlpis) {

		if (its_init_vpe_domain()) {

			rdists->has_vlpis = false;

			pr_err("ITS: Disabling GICv4 support\n");

		}

	}



	return 0;

}
 
}