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authorJoerg Roedel <joro@8bytes.org>2012-09-26 12:44:37 +0200
committerJoerg Roedel <joro@8bytes.org>2013-01-28 10:48:30 +0100
commit71054d8841b442bb3d8be60bde2bfac0483c19da (patch)
tree0a5ba9b3ee50448bb94691b3622870c09c5e7f64
parentafcc8a40a090f7a65d3b72bac1a26fc6dbb63b10 (diff)
x86, hpet: Introduce x86_msi_ops.setup_hpet_msi
This function pointer can be overwritten by the IRQ remapping code. The irq_remapping_enabled check can be removed from default_setup_hpet_msi. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
-rw-r--r--arch/x86/include/asm/hpet.h5
-rw-r--r--arch/x86/include/asm/x86_init.h1
-rw-r--r--arch/x86/kernel/apic/io_apic.c8
-rw-r--r--arch/x86/kernel/hpet.c2
-rw-r--r--arch/x86/kernel/x86_init.c10
-rw-r--r--drivers/iommu/irq_remapping.c3
6 files changed, 14 insertions, 15 deletions
diff --git a/arch/x86/include/asm/hpet.h b/arch/x86/include/asm/hpet.h
index 434e2106cc87..b18df579c0e9 100644
--- a/arch/x86/include/asm/hpet.h
+++ b/arch/x86/include/asm/hpet.h
@@ -80,9 +80,9 @@ extern void hpet_msi_write(struct hpet_dev *hdev, struct msi_msg *msg);
extern void hpet_msi_read(struct hpet_dev *hdev, struct msi_msg *msg);
#ifdef CONFIG_PCI_MSI
-extern int arch_setup_hpet_msi(unsigned int irq, unsigned int id);
+extern int default_setup_hpet_msi(unsigned int irq, unsigned int id);
#else
-static inline int arch_setup_hpet_msi(unsigned int irq, unsigned int id)
+static inline int default_setup_hpet_msi(unsigned int irq, unsigned int id)
{
return -EINVAL;
}
@@ -111,6 +111,7 @@ extern void hpet_unregister_irq_handler(rtc_irq_handler handler);
static inline int hpet_enable(void) { return 0; }
static inline int is_hpet_enabled(void) { return 0; }
#define hpet_readl(a) 0
+#define default_setup_hpet_msi NULL
#endif
#endif /* _ASM_X86_HPET_H */
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index 8ff79f7d3630..1ee10ca46675 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -187,6 +187,7 @@ struct x86_msi_ops {
void (*teardown_msi_irq)(unsigned int irq);
void (*teardown_msi_irqs)(struct pci_dev *dev);
void (*restore_msi_irqs)(struct pci_dev *dev, int irq);
+ int (*setup_hpet_msi)(unsigned int irq, unsigned int id);
};
struct x86_io_apic_ops {
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index a18e27a8882a..e7b87630c13d 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -3399,18 +3399,12 @@ static struct irq_chip hpet_msi_type = {
.irq_retrigger = ioapic_retrigger_irq,
};
-int arch_setup_hpet_msi(unsigned int irq, unsigned int id)
+int default_setup_hpet_msi(unsigned int irq, unsigned int id)
{
struct irq_chip *chip = &hpet_msi_type;
struct msi_msg msg;
int ret;
- if (irq_remapping_enabled) {
- ret = setup_hpet_msi_remapped(irq, id);
- if (ret)
- return ret;
- }
-
ret = msi_compose_msg(NULL, irq, &msg, id);
if (ret < 0)
return ret;
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index e28670f9a589..da85a8e830a1 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -478,7 +478,7 @@ static int hpet_msi_next_event(unsigned long delta,
static int hpet_setup_msi_irq(unsigned int irq)
{
- if (arch_setup_hpet_msi(irq, hpet_blockid)) {
+ if (x86_msi.setup_hpet_msi(irq, hpet_blockid)) {
destroy_irq(irq);
return -EINVAL;
}
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index ee4af8b04841..0357eee65673 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -19,6 +19,7 @@
#include <asm/time.h>
#include <asm/irq.h>
#include <asm/io_apic.h>
+#include <asm/hpet.h>
#include <asm/pat.h>
#include <asm/tsc.h>
#include <asm/iommu.h>
@@ -111,10 +112,11 @@ struct x86_platform_ops x86_platform = {
EXPORT_SYMBOL_GPL(x86_platform);
struct x86_msi_ops x86_msi = {
- .setup_msi_irqs = native_setup_msi_irqs,
- .teardown_msi_irq = native_teardown_msi_irq,
- .teardown_msi_irqs = default_teardown_msi_irqs,
- .restore_msi_irqs = default_restore_msi_irqs,
+ .setup_msi_irqs = native_setup_msi_irqs,
+ .teardown_msi_irq = native_teardown_msi_irq,
+ .teardown_msi_irqs = default_teardown_msi_irqs,
+ .restore_msi_irqs = default_restore_msi_irqs,
+ .setup_hpet_msi = default_setup_hpet_msi,
};
struct x86_io_apic_ops x86_io_apic_ops = {
diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index db3dcaf4ddf0..0baad3b9ecba 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -36,7 +36,8 @@ static void irq_remapping_disable_io_apic(void)
static void __init irq_remapping_modify_x86_ops(void)
{
- x86_io_apic_ops.disable = irq_remapping_disable_io_apic;
+ x86_io_apic_ops.disable = irq_remapping_disable_io_apic;
+ x86_msi.setup_hpet_msi = setup_hpet_msi_remapped;
}
static __init int setup_nointremap(char *str)