[tip:irq/numa] x86, apic: introduce io_apic_irq_attr

From: tip-bot for Yinghai Lu
Date: Mon May 18 2009 - 03:40:32 EST

Next message: tip-bot for Yinghai Lu: "[tip:x86/mm] x86, mm: Fix node_possible_map logic"
Previous message: Mike Frysinger: "[PATCH] virtio_blk: add missing __dev{init,exit} markings"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Commit-ID: e5198075c67a22ec9a09565b1ce88d3d3f5ba855
Gitweb: http://git.kernel.org/tip/e5198075c67a22ec9a09565b1ce88d3d3f5ba855
Author: Yinghai Lu <yinghai@xxxxxxxxxx>
AuthorDate: Fri, 15 May 2009 13:05:16 -0700
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Mon, 18 May 2009 08:38:55 +0200

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@xxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
Cc: Len Brown <lenb@xxxxxxxxxx>
LKML-Reference: <4A08ACD3.2070401@xxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>

---
arch/x86/include/asm/hw_irq.h | 21 ++++++++++++++++-
arch/x86/include/asm/io_apic.h | 5 ++-
arch/x86/kernel/acpi/boot.c | 22 ++++++++++--------
arch/x86/kernel/apic/io_apic.c | 43 +++++++++++++++++++++---------------
arch/x86/pci/irq.c | 16 ++++---------
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 26a40ab..a7d14bb 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 6fd99f9..daf866e 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 dcfbc3a..4af63df 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 74d2b48..ce1ac74 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 2f3e192..0696d50 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 79901a0..42e4260 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]);
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

Next message: tip-bot for Yinghai Lu: "[tip:x86/mm] x86, mm: Fix node_possible_map logic"
Previous message: Mike Frysinger: "[PATCH] virtio_blk: add missing __dev{init,exit} markings"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]