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Date: Fri, 1 Apr 2011 17:44:46 +0200
From: Florian Mickler <florian@...kler.org>
To: mingo@...e.hu
Cc: linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
Florian Mickler <florian@...kler.org>,
Len Brown <lenb@...nel.org>,
"Eric W. Biederman" <ebiederm@...ssion.com>,
kurup_avinash@...oo.com, maciej.rutecki@...il.com, rjw@...k.pl,
sedat.dilek@...il.com
Subject: [PATCH] x86, ioapic: move acpi_get_override_irq to acpi.c
In order to get rid of the ugly CONFIG_ACPI ifdef, we move
the function acpi_get_override_irq into acpi.c and add a new
helper function ioapic_get_irq to io_apic.c.
Signed-off-by: Florian Mickler <florian@...kler.org>
Cc: Len Brown <lenb@...nel.org>
Cc: "Eric W. Biederman" <ebiederm@...ssion.com>
Cc: kurup_avinash@...oo.com
Cc: maciej.rutecki@...il.com
Cc: rjw@...k.pl
Cc: sedat.dilek@...il.com
LKML-Reference: <1301558489-4198-1-git-send-email-florian@...kler.org>
---
Hi Ingo,
Instead of exporting find_irq_entry, irq_trigger and irq_polarity, I added a
new helper function 'ioapic_get_irq(..)' and exported that.
Also I did it as a seperate commit, since it is more of a cleanup and the other
commit is already tested... hope this is ok.
Regards,
Flo
arch/x86/include/asm/io_apic.h | 8 +++++++-
arch/x86/kernel/apic/io_apic.c | 40 ++++++++++++----------------------------
arch/x86/pci/acpi.c | 24 ++++++++++++++++++++++++
include/linux/acpi.h | 6 ++++++
4 files changed, 49 insertions(+), 29 deletions(-)
diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h
index c4bd267..89d3fc6 100644
--- a/arch/x86/include/asm/io_apic.h
+++ b/arch/x86/include/asm/io_apic.h
@@ -177,6 +177,7 @@ extern void __init pre_init_apic_IRQ0(void);
extern void mp_save_irq(struct mpc_intsrc *m);
extern void disable_ioapic_support(void);
+extern int ioapic_get_irq(int ioapic, int pin, int *trigger, int *polarity);
#else /* !CONFIG_X86_IO_APIC */
@@ -209,8 +210,13 @@ static inline int restore_IO_APIC_setup(struct IO_APIC_route_entry **ent)
return -ENOMEM;
}
-static inline void mp_save_irq(struct mpc_intsrc *m) { };
+static inline void mp_save_irq(struct mpc_intsrc *m) { }
static inline void disable_ioapic_support(void) { }
+static inline int ioapic_get_irq(int ioapic, int pin, int *trigger,
+ int *polarity)
+{
+ return -1;
+}
#endif
#endif /* _ASM_X86_IO_APIC_H */
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index edf86ca..35eb531 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -938,6 +938,18 @@ static int irq_trigger(int idx)
return trigger;
}
+int ioapic_get_irq(int ioapic, int pin, int *trigger, int *polarity)
+{
+ int idx = find_irq_entry(ioapic, pin, mp_INT);
+
+ if (idx >= 0) {
+ *trigger = irq_trigger(idx);
+ *polarity = irq_polarity(idx);
+ }
+
+ return idx;
+}
+
static int pin_2_irq(int idx, int apic, int pin)
{
int irq;
@@ -3785,34 +3797,6 @@ static int __init io_apic_get_version(int ioapic)
return reg_01.bits.version;
}
-int acpi_get_override_irq(u32 gsi, int *trigger, int *polarity)
-{
- int ioapic, pin, idx;
-
-#ifdef CONFIG_ACPI
- if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
- return -1;
-#endif
- if (skip_ioapic_setup)
- return -1;
-
- ioapic = mp_find_ioapic(gsi);
- if (ioapic < 0)
- return -1;
-
- pin = mp_find_ioapic_pin(ioapic, gsi);
- if (pin < 0)
- return -1;
-
- idx = find_irq_entry(ioapic, pin, mp_INT);
- if (idx < 0)
- return -1;
-
- *trigger = irq_trigger(idx);
- *polarity = irq_polarity(idx);
- return 0;
-}
-
/*
* This function currently is only a helper for the i386 smp boot process where
* we need to reprogram the ioredtbls to cater for the cpus which have come online
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 0972315..941328d 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -70,6 +70,30 @@ void __init pci_acpi_crs_quirks(void)
pci_use_crs ? "nocrs" : "use_crs");
}
+int acpi_get_override_irq(u32 gsi, int *trigger, int *polarity)
+{
+ int ioapic, pin;
+
+ if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
+ return -1;
+
+ if (skip_ioapic_setup)
+ return -1;
+
+ ioapic = mp_find_ioapic(gsi);
+ if (ioapic < 0)
+ return -1;
+
+ pin = mp_find_ioapic_pin(ioapic, gsi);
+ if (pin < 0)
+ return -1;
+
+ if (ioapic_get_irq(ioapic, pin, trigger, polarity) < 0)
+ return -1;
+
+ return 0;
+}
+
static acpi_status
resource_to_addr(struct acpi_resource *resource,
struct acpi_resource_address64 *addr)
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index a2e910e..82c03db 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -348,6 +348,12 @@ static inline int acpi_table_parse(char *id,
{
return -1;
}
+
+static inline int acpi_get_override_irq(u32 gsi, int *trigger, int *polarity)
+{
+ return -1;
+}
+
#endif /* !CONFIG_ACPI */
#ifdef CONFIG_ACPI_SLEEP
--
1.7.4.1
--
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