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author | Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> | 2015-12-10 16:55:29 (GMT) |
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committer | Marc Zyngier <marc.zyngier@arm.com> | 2015-12-21 13:50:03 (GMT) |
commit | 4266ab1a8ff5715e48b2e89046305864650ce025 (patch) | |
tree | 7aaba8ab9f43ae3d844acb59fe1c5c1c4219e140 /drivers/irqchip | |
parent | 75aba7b0e9ac416ca53c0c97680b8e9aedf09284 (diff) | |
download | linux-4266ab1a8ff5715e48b2e89046305864650ce025.tar.xz |
irqchip/gic-v2m: Refactor to prepare for ACPI support
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>
Diffstat (limited to 'drivers/irqchip')
-rw-r--r-- | drivers/irqchip/irq-gic-v2m.c | 53 |
1 files changed, 32 insertions, 21 deletions
diff --git a/drivers/irqchip/irq-gic-v2m.c b/drivers/irqchip/irq-gic-v2m.c index 87f8d10..779c390 100644 --- a/drivers/irqchip/irq-gic-v2m.c +++ b/drivers/irqchip/irq-gic-v2m.c @@ -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; |