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author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-10-25 21:55:14 (GMT) |
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committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-10-25 21:55:14 (GMT) |
commit | e3ed766b4958bf7889539f09aec3f6a72d2c4dd2 (patch) | |
tree | d6242edddfb436bff21894308d9280933e762433 /drivers/irqchip | |
parent | 343ccb040e60c3688d4413e839975fc3c8f9e287 (diff) | |
parent | 3722ed2380ad6e89eaf81fcf93f06d605e740435 (diff) | |
download | linux-e3ed766b4958bf7889539f09aec3f6a72d2c4dd2.tar.xz |
Merge branch 'acpi-init'
* acpi-init:
clocksource: cosmetic: Drop OF 'dependency' from symbols
clocksource / arm_arch_timer: Convert to ACPI probing
clocksource: Add new CLKSRC_{PROBE,ACPI} config symbols
clocksource / ACPI: Add probing infrastructure for ACPI-based clocksources
irqchip / GIC: Convert the GIC driver to ACPI probing
irqchip / ACPI: Add probing infrastructure for ACPI-based irqchips
ACPI: Add early device probing infrastructure
Diffstat (limited to 'drivers/irqchip')
-rw-r--r-- | drivers/irqchip/irq-gic.c | 69 | ||||
-rw-r--r-- | drivers/irqchip/irqchip.c | 5 |
2 files changed, 37 insertions, 37 deletions
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index 982c09c..d4add30 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -41,7 +41,6 @@ #include <linux/irqchip.h> #include <linux/irqchip/chained_irq.h> #include <linux/irqchip/arm-gic.h> -#include <linux/irqchip/arm-gic-acpi.h> #include <asm/cputype.h> #include <asm/irq.h> @@ -1195,7 +1194,7 @@ IRQCHIP_DECLARE(msm_qgic2, "qcom,msm-qgic2", gic_of_init); #endif #ifdef CONFIG_ACPI -static phys_addr_t dist_phy_base, cpu_phy_base __initdata; +static phys_addr_t cpu_phy_base __initdata; static int __init gic_acpi_parse_madt_cpu(struct acpi_subtable_header *header, @@ -1223,60 +1222,56 @@ gic_acpi_parse_madt_cpu(struct acpi_subtable_header *header, return 0; } -static int __init -gic_acpi_parse_madt_distributor(struct acpi_subtable_header *header, - const unsigned long end) +/* The things you have to do to just *count* something... */ +static int __init acpi_dummy_func(struct acpi_subtable_header *header, + const unsigned long end) { - struct acpi_madt_generic_distributor *dist; + return 0; +} - dist = (struct acpi_madt_generic_distributor *)header; +static bool __init acpi_gic_redist_is_present(void) +{ + return acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_REDISTRIBUTOR, + acpi_dummy_func, 0) > 0; +} - if (BAD_MADT_ENTRY(dist, end)) - return -EINVAL; +static bool __init gic_validate_dist(struct acpi_subtable_header *header, + struct acpi_probe_entry *ape) +{ + struct acpi_madt_generic_distributor *dist; + dist = (struct acpi_madt_generic_distributor *)header; - dist_phy_base = dist->base_address; - return 0; + return (dist->version == ape->driver_data && + (dist->version != ACPI_MADT_GIC_VERSION_NONE || + !acpi_gic_redist_is_present())); } -int __init -gic_v2_acpi_init(struct acpi_table_header *table) +#define ACPI_GICV2_DIST_MEM_SIZE (SZ_4K) +#define ACPI_GIC_CPU_IF_MEM_SIZE (SZ_8K) + +static int __init gic_v2_acpi_init(struct acpi_subtable_header *header, + const unsigned long end) { + struct acpi_madt_generic_distributor *dist; void __iomem *cpu_base, *dist_base; int count; /* Collect CPU base addresses */ - count = acpi_parse_entries(ACPI_SIG_MADT, - sizeof(struct acpi_table_madt), - gic_acpi_parse_madt_cpu, table, - ACPI_MADT_TYPE_GENERIC_INTERRUPT, 0); + count = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT, + gic_acpi_parse_madt_cpu, 0); if (count <= 0) { pr_err("No valid GICC entries exist\n"); return -EINVAL; } - /* - * Find distributor base address. We expect one distributor entry since - * ACPI 5.1 spec neither support multi-GIC instances nor GIC cascade. - */ - count = acpi_parse_entries(ACPI_SIG_MADT, - sizeof(struct acpi_table_madt), - gic_acpi_parse_madt_distributor, table, - ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR, 0); - if (count <= 0) { - pr_err("No valid GICD entries exist\n"); - return -EINVAL; - } else if (count > 1) { - pr_err("More than one GICD entry detected\n"); - return -EINVAL; - } - cpu_base = ioremap(cpu_phy_base, ACPI_GIC_CPU_IF_MEM_SIZE); if (!cpu_base) { pr_err("Unable to map GICC registers\n"); return -ENOMEM; } - dist_base = ioremap(dist_phy_base, ACPI_GICV2_DIST_MEM_SIZE); + dist = (struct acpi_madt_generic_distributor *)header; + dist_base = ioremap(dist->base_address, ACPI_GICV2_DIST_MEM_SIZE); if (!dist_base) { pr_err("Unable to map GICD registers\n"); iounmap(cpu_base); @@ -1302,4 +1297,10 @@ gic_v2_acpi_init(struct acpi_table_header *table) acpi_irq_model = ACPI_IRQ_MODEL_GIC; return 0; } +IRQCHIP_ACPI_DECLARE(gic_v2, ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR, + gic_validate_dist, ACPI_MADT_GIC_VERSION_V2, + gic_v2_acpi_init); +IRQCHIP_ACPI_DECLARE(gic_v2_maybe, ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR, + gic_validate_dist, ACPI_MADT_GIC_VERSION_NONE, + gic_v2_acpi_init); #endif diff --git a/drivers/irqchip/irqchip.c b/drivers/irqchip/irqchip.c index afd1af3..2b35e68 100644 --- a/drivers/irqchip/irqchip.c +++ b/drivers/irqchip/irqchip.c @@ -8,7 +8,7 @@ * warranty of any kind, whether express or implied. */ -#include <linux/acpi_irq.h> +#include <linux/acpi.h> #include <linux/init.h> #include <linux/of_irq.h> #include <linux/irqchip.h> @@ -27,6 +27,5 @@ extern struct of_device_id __irqchip_of_table[]; void __init irqchip_init(void) { of_irq_init(__irqchip_of_table); - - acpi_irq_init(); + acpi_probe_device_table(irqchip); } |