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irqchip/gic-v2m: Refactor to prepare for ACPI support

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This patch replaces the struct device_node with struct fwnode_handle
since this structure is common between DT and ACPI.

It also refactors gicv2m_init_one() to prepare for ACPI support.
The only functional change is removing the node name from pr_info.

Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Suravee Suthikulpanit 2015-12-10 08:55:29 -08:00 committed by Marc Zyngier
parent 75aba7b0e9
commit 4266ab1a8f
1 changed files with 32 additions and 21 deletions
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53
drivers/irqchip/irq-gic-v2m.c
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@ -55,7 +55,7 @@ static DEFINE_SPINLOCK(v2m_lock);
struct v2m_data {
struct list_head entry;
struct device_node *node;
struct fwnode_handle *fwnode;
struct resource res; /* GICv2m resource */
void __iomem *base; /* GICv2m virt address */
u32 spi_start; /* The SPI number that MSIs start */
@ -254,7 +254,7 @@ static void gicv2m_teardown(void)
list_del(&v2m->entry);
kfree(v2m->bm);
iounmap(v2m->base);
of_node_put(v2m->node);
of_node_put(to_of_node(v2m->fwnode));
kfree(v2m);
}
}
@ -268,7 +268,7 @@ static int gicv2m_allocate_domains(struct irq_domain *parent)
if (!v2m)
return 0;
inner_domain = irq_domain_create_tree(of_node_to_fwnode(v2m->node),
inner_domain = irq_domain_create_tree(v2m->fwnode,
&gicv2m_domain_ops, v2m);
if (!inner_domain) {
pr_err("Failed to create GICv2m domain\n");
@ -277,10 +277,10 @@ static int gicv2m_allocate_domains(struct irq_domain *parent)
inner_domain->bus_token = DOMAIN_BUS_NEXUS;
inner_domain->parent = parent;
pci_domain = pci_msi_create_irq_domain(of_node_to_fwnode(v2m->node),
pci_domain = pci_msi_create_irq_domain(v2m->fwnode,
&gicv2m_msi_domain_info,
inner_domain);
plat_domain = platform_msi_create_irq_domain(of_node_to_fwnode(v2m->node),
plat_domain = platform_msi_create_irq_domain(v2m->fwnode,
&gicv2m_pmsi_domain_info,
inner_domain);
if (!pci_domain || !plat_domain) {
@ -296,8 +296,9 @@ static int gicv2m_allocate_domains(struct irq_domain *parent)
return 0;
}
static int __init gicv2m_init_one(struct device_node *node,
struct irq_domain *parent)
static int __init gicv2m_init_one(struct fwnode_handle *fwnode,
u32 spi_start, u32 nr_spis,
struct resource *res)
{
int ret;
struct v2m_data *v2m;
@ -309,13 +310,9 @@ static int __init gicv2m_init_one(struct device_node *node,
}
INIT_LIST_HEAD(&v2m->entry);
v2m->node = node;
v2m->fwnode = fwnode;
ret = of_address_to_resource(node, 0, &v2m->res);
if (ret) {
pr_err("Failed to allocate v2m resource.\n");
goto err_free_v2m;
}
memcpy(&v2m->res, res, sizeof(struct resource));
v2m->base = ioremap(v2m->res.start, resource_size(&v2m->res));
if (!v2m->base) {
@ -324,10 +321,9 @@ static int __init gicv2m_init_one(struct device_node *node,
goto err_free_v2m;
}
if (!of_property_read_u32(node, "arm,msi-base-spi", &v2m->spi_start) &&
!of_property_read_u32(node, "arm,msi-num-spis", &v2m->nr_spis)) {
pr_info("Overriding V2M MSI_TYPER (base:%u, num:%u)\n",
v2m->spi_start, v2m->nr_spis);
if (spi_start && nr_spis) {
v2m->spi_start = spi_start;
v2m->nr_spis = nr_spis;
} else {
u32 typer = readl_relaxed(v2m->base + V2M_MSI_TYPER);
@ -359,10 +355,10 @@ static int __init gicv2m_init_one(struct device_node *node,
}
list_add_tail(&v2m->entry, &v2m_nodes);
pr_info("Node %s: range[%#lx:%#lx], SPI[%d:%d]\n", node->name,
(unsigned long)v2m->res.start, (unsigned long)v2m->res.end,
v2m->spi_start, (v2m->spi_start + v2m->nr_spis));
pr_info("range[%#lx:%#lx], SPI[%d:%d]\n",
(unsigned long)res->start, (unsigned long)res->end,
v2m->spi_start, (v2m->spi_start + v2m->nr_spis));
return 0;
err_iounmap:
@ -384,10 +380,25 @@ int __init gicv2m_of_init(struct device_node *node, struct irq_domain *parent)
for (child = of_find_matching_node(node, gicv2m_device_id); child;
child = of_find_matching_node(child, gicv2m_device_id)) {
u32 spi_start = 0, nr_spis = 0;
struct resource res;
if (!of_find_property(child, "msi-controller", NULL))
continue;
ret = gicv2m_init_one(child, parent);
ret = of_address_to_resource(child, 0, &res);
if (ret) {
pr_err("Failed to allocate v2m resource.\n");
break;
}
if (!of_property_read_u32(child, "arm,msi-base-spi",
&spi_start) &&
!of_property_read_u32(child, "arm,msi-num-spis", &nr_spis))
pr_info("DT overriding V2M MSI_TYPER (base:%u, num:%u)\n",
spi_start, nr_spis);
ret = gicv2m_init_one(&child->fwnode, spi_start, nr_spis, &res);
if (ret) {
of_node_put(node);
break;