diff options
author | Yinghai Lu <yinghai@kernel.org> | 2009-05-15 13:05:16 -0700 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2009-05-18 08:38:55 +0200 |
commit | e5198075c67a22ec9a09565b1ce88d3d3f5ba855 (patch) | |
tree | 3d4ea0efd8575e677509b022e649c62d4786ed55 | |
parent | b5710ce92a8cf8e3fc0ffc230cfdbfa23463f1c8 (diff) | |
download | linux-stable-e5198075c67a22ec9a09565b1ce88d3d3f5ba855.tar.gz linux-stable-e5198075c67a22ec9a09565b1ce88d3d3f5ba855.tar.bz2 linux-stable-e5198075c67a22ec9a09565b1ce88d3d3f5ba855.zip |
x86, apic: introduce io_apic_irq_attr
according to Ingo, io_apic irq-setup related functions have too many
parameters with a repetitive signature.
So reduce related funcs to get less params by passing a pointer
to a newly defined io_apic_irq_attr structure.
v2: io_apic_irq ==> irq_attr
triggering ==> trigger
v3: add set_io_apic_irq_attr
[ Impact: cleanup ]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Len Brown <lenb@kernel.org>
LKML-Reference: <4A08ACD3.2070401@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r-- | arch/x86/include/asm/hw_irq.h | 21 | ||||
-rw-r--r-- | arch/x86/include/asm/io_apic.h | 5 | ||||
-rw-r--r-- | arch/x86/kernel/acpi/boot.c | 22 | ||||
-rw-r--r-- | arch/x86/kernel/apic/io_apic.c | 43 | ||||
-rw-r--r-- | arch/x86/pci/irq.c | 16 | ||||
-rw-r--r-- | drivers/pci/hotplug/ibmphp_core.c | 6 |
6 files changed, 66 insertions, 47 deletions
diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h index 26a40ab70131..a7d14bbae110 100644 --- a/arch/x86/include/asm/hw_irq.h +++ b/arch/x86/include/asm/hw_irq.h @@ -63,9 +63,26 @@ extern unsigned long io_apic_irqs; extern void init_VISWS_APIC_irqs(void); extern void setup_IO_APIC(void); extern void disable_IO_APIC(void); + +struct io_apic_irq_attr { + int ioapic; + int ioapic_pin; + int trigger; + int polarity; +}; + +static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr, + int ioapic, int ioapic_pin, + int trigger, int polarity) +{ + irq_attr->ioapic = ioapic; + irq_attr->ioapic_pin = ioapic_pin; + irq_attr->trigger = trigger; + irq_attr->polarity = polarity; +} + extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin, - int *ioapic, int *ioapic_pin, - int *trigger, int *polarity); + struct io_apic_irq_attr *irq_attr); extern void setup_ioapic_dest(void); extern void enable_IO_APIC(void); diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index 6fd99f96eb0a..daf866ed0612 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -156,8 +156,9 @@ extern int io_apic_get_version(int ioapic); extern int io_apic_get_redir_entries(int ioapic); #endif /* CONFIG_ACPI */ -extern int io_apic_set_pci_routing(struct device *dev, int ioapic, int pin, - int irq, int edge_level, int active_high_low); +struct io_apic_irq_attr; +extern int io_apic_set_pci_routing(struct device *dev, int irq, + struct io_apic_irq_attr *irq_attr); extern int (*ioapic_renumber_irq)(int ioapic, int irq); extern void ioapic_init_mappings(void); diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index dcfbc3ab9e46..4af63dfb0f06 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -523,7 +523,7 @@ int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) * success: return IRQ number (>=0) * failure: return < 0 */ -int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity) +int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) { unsigned int irq; unsigned int plat_gsi = gsi; @@ -533,14 +533,14 @@ int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity) * Make sure all (legacy) PCI IRQs are set as level-triggered. */ if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) { - if (triggering == ACPI_LEVEL_SENSITIVE) + if (trigger == ACPI_LEVEL_SENSITIVE) eisa_set_level_irq(gsi); } #endif #ifdef CONFIG_X86_IO_APIC if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) { - plat_gsi = mp_register_gsi(dev, gsi, triggering, polarity); + plat_gsi = mp_register_gsi(dev, gsi, trigger, polarity); } #endif acpi_gsi_to_irq(plat_gsi, &irq); @@ -1156,7 +1156,7 @@ void __init mp_config_acpi_legacy_irqs(void) } } -static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int triggering, +static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger, int polarity) { #ifdef CONFIG_X86_MPPARSE @@ -1181,7 +1181,7 @@ static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int triggering, /* print the entry should happen on mptable identically */ mp_irq.type = MP_INTSRC; mp_irq.irqtype = mp_INT; - mp_irq.irqflag = (triggering == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | + mp_irq.irqflag = (trigger == ACPI_EDGE_SENSITIVE ? 4 : 0x0c) | (polarity == ACPI_ACTIVE_HIGH ? 1 : 3); mp_irq.srcbus = number; mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3); @@ -1194,10 +1194,11 @@ static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int triggering, return 0; } -int mp_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity) +int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) { int ioapic; int ioapic_pin; + struct io_apic_irq_attr irq_attr; if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) return gsi; @@ -1225,11 +1226,12 @@ int mp_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity) ioapic_pin); return gsi; } - mp_config_acpi_gsi(dev, gsi, triggering, polarity); + mp_config_acpi_gsi(dev, gsi, trigger, polarity); - io_apic_set_pci_routing(dev, ioapic, ioapic_pin, gsi, - triggering == ACPI_EDGE_SENSITIVE ? 0 : 1, - polarity == ACPI_ACTIVE_HIGH ? 0 : 1); + set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin, + trigger == ACPI_EDGE_SENSITIVE ? 0 : 1, + polarity == ACPI_ACTIVE_HIGH ? 0 : 1); + io_apic_set_pci_routing(dev, gsi, &irq_attr); return gsi; } diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 74d2b480a20b..ce1ac74baa73 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -1096,8 +1096,7 @@ static int pin_2_irq(int idx, int apic, int pin) * Not an __init, possibly needed by modules */ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin, - int *ioapic, int *ioapic_pin, - int *trigger, int *polarity) + struct io_apic_irq_attr *irq_attr) { int apic, i, best_guess = -1; @@ -1127,10 +1126,10 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin, continue; if (pin == (mp_irqs[i].srcbusirq & 3)) { - *ioapic = apic; - *ioapic_pin = mp_irqs[i].dstirq; - *trigger = irq_trigger(i); - *polarity = irq_polarity(i); + set_io_apic_irq_attr(irq_attr, apic, + mp_irqs[i].dstirq, + irq_trigger(i), + irq_polarity(i)); return irq; } /* @@ -1138,10 +1137,10 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin, * best-guess fuzzy result for broken mptables. */ if (best_guess < 0) { - *ioapic = apic; - *ioapic_pin = mp_irqs[i].dstirq; - *trigger = irq_trigger(i); - *polarity = irq_polarity(i); + set_io_apic_irq_attr(irq_attr, apic, + mp_irqs[i].dstirq, + irq_trigger(i), + irq_polarity(i)); best_guess = irq; } } @@ -3865,13 +3864,16 @@ int __init arch_probe_nr_irqs(void) } #endif -static int __io_apic_set_pci_routing(struct device *dev, int ioapic, int pin, int irq, - int triggering, int polarity) +static int __io_apic_set_pci_routing(struct device *dev, int irq, + struct io_apic_irq_attr *irq_attr) { struct irq_desc *desc; struct irq_cfg *cfg; int node; + int ioapic, pin; + int trigger, polarity; + ioapic = irq_attr->ioapic; if (!IO_APIC_IRQ(irq)) { apic_printk(APIC_QUIET,KERN_ERR "IOAPIC[%d]: Invalid reference to IRQ 0\n", ioapic); @@ -3889,6 +3891,10 @@ static int __io_apic_set_pci_routing(struct device *dev, int ioapic, int pin, in return 0; } + pin = irq_attr->ioapic_pin; + trigger = irq_attr->trigger; + polarity = irq_attr->polarity; + /* * IRQs < 16 are already in the irq_2_pin[] map */ @@ -3897,20 +3903,22 @@ static int __io_apic_set_pci_routing(struct device *dev, int ioapic, int pin, in add_pin_to_irq_node(cfg, node, ioapic, pin); } - setup_IO_APIC_irq(ioapic, pin, irq, desc, triggering, polarity); + setup_IO_APIC_irq(ioapic, pin, irq, desc, trigger, polarity); return 0; } -int io_apic_set_pci_routing(struct device *dev, int ioapic, int pin, int irq, - int triggering, int polarity) +int io_apic_set_pci_routing(struct device *dev, int irq, + struct io_apic_irq_attr *irq_attr) { - + int ioapic, pin; /* * Avoid pin reprogramming. PRTs typically include entries * with redundant pin->gsi mappings (but unique PCI devices); * we only program the IOAPIC on the first. */ + ioapic = irq_attr->ioapic; + pin = irq_attr->ioapic_pin; if (test_bit(pin, mp_ioapic_routing[ioapic].pin_programmed)) { pr_debug("Pin %d-%d already programmed\n", mp_ioapics[ioapic].apicid, pin); @@ -3918,8 +3926,7 @@ int io_apic_set_pci_routing(struct device *dev, int ioapic, int pin, int irq, } set_bit(pin, mp_ioapic_routing[ioapic].pin_programmed); - return __io_apic_set_pci_routing(dev, ioapic, pin, irq, - triggering, polarity); + return __io_apic_set_pci_routing(dev, irq, irq_attr); } /* -------------------------------------------------------------------------- diff --git a/arch/x86/pci/irq.c b/arch/x86/pci/irq.c index 2f3e192615c0..0696d506c4ad 100644 --- a/arch/x86/pci/irq.c +++ b/arch/x86/pci/irq.c @@ -1200,14 +1200,11 @@ static int pirq_enable_irq(struct pci_dev *dev) #ifdef CONFIG_X86_IO_APIC struct pci_dev *temp_dev; int irq; - int ioapic = -1, ioapic_pin = -1; - int triggering, polarity; + struct io_apic_irq_attr irq_attr; irq = IO_APIC_get_PCI_irq_vector(dev->bus->number, PCI_SLOT(dev->devfn), - pin - 1, - &ioapic, &ioapic_pin, - &triggering, &polarity); + pin - 1, &irq_attr); /* * Busses behind bridges are typically not listed in the MP-table. * In this case we have to look up the IRQ based on the parent bus, @@ -1221,9 +1218,7 @@ static int pirq_enable_irq(struct pci_dev *dev) pin = pci_swizzle_interrupt_pin(dev, pin); irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number, PCI_SLOT(bridge->devfn), - pin - 1, - &ioapic, &ioapic_pin, - &triggering, &polarity); + pin - 1, &irq_attr); if (irq >= 0) dev_warn(&dev->dev, "using bridge %s " "INT %c to get IRQ %d\n", @@ -1233,9 +1228,8 @@ static int pirq_enable_irq(struct pci_dev *dev) } dev = temp_dev; if (irq >= 0) { - io_apic_set_pci_routing(&dev->dev, ioapic, - ioapic_pin, irq, - triggering, polarity); + io_apic_set_pci_routing(&dev->dev, irq, + &irq_attr); dev->irq = irq; dev_info(&dev->dev, "PCI->APIC IRQ transform: " "INT %c -> IRQ %d\n", 'A' + pin - 1, irq); diff --git a/drivers/pci/hotplug/ibmphp_core.c b/drivers/pci/hotplug/ibmphp_core.c index 79901a0db885..42e4260c3b12 100644 --- a/drivers/pci/hotplug/ibmphp_core.c +++ b/drivers/pci/hotplug/ibmphp_core.c @@ -155,15 +155,13 @@ int ibmphp_init_devno(struct slot **cur_slot) for (loop = 0; loop < len; loop++) { if ((*cur_slot)->number == rtable->slots[loop].slot && (*cur_slot)->bus == rtable->slots[loop].bus) { - int ioapic = -1, ioapic_pin = -1; - int triggering, polarity; + struct io_apic_irq_attr irq_attr; (*cur_slot)->device = PCI_SLOT(rtable->slots[loop].devfn); for (i = 0; i < 4; i++) (*cur_slot)->irq[i] = IO_APIC_get_PCI_irq_vector((int) (*cur_slot)->bus, (int) (*cur_slot)->device, i, - &ioapic, &ioapic_pin, - &triggering, &polarity); + &irq_attr); debug("(*cur_slot)->irq[0] = %x\n", (*cur_slot)->irq[0]); |