[PATCH] *** SUBJECT HERE ***

[PATCH] *** SUBJECT HERE ***

[Jeremy Fitzhardinge]

Hi all,

This series of patches (against tip/x86/apic) makes some fairly
uncontroversial changes and cleanups to lay the groundwork for some more
Xen-specific patches (which will no doubt cause more of a discussion).

These changes can also be pulled from
   git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git x86/apic

Thanks,
	J

Ian Campbell (1):
  xen: expose enable_IO_APIC for 32-bit

Jeremy Fitzhardinge (4):
  x86: make apic_* operations inline functions
  x86: unstatic mp_find_ioapic so it can be used elsewhere
  x86: add mp_find_ioapic_pin
  x86: unstatic ioapic entry funcs

 arch/x86/include/asm/apic.h    |   35 +++++++++++++++++++++++++++++------
 arch/x86/include/asm/hw_irq.h  |    2 --
 arch/x86/include/asm/io_apic.h |    6 ++++++
 arch/x86/include/asm/mpspec.h  |    2 ++
 arch/x86/kernel/acpi/boot.c    |   18 ++++++++++++++----
 arch/x86/kernel/io_apic.c      |   10 +++++-----
 6 files changed, 56 insertions(+), 17 deletions(-)

[PATCH] x86: make apic_* operations inline functions

[Jeremy Fitzhardinge]

Mainly to get proper type-checking and consistency.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
 arch/x86/include/asm/apic.h |   35 +++++++++++++++++++++++++++++------
 1 files changed, 29 insertions(+), 6 deletions(-)

diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
index b03711d..f4835a1 100644
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -139,12 +139,35 @@ struct apic_ops {
 
 extern struct apic_ops *apic_ops;
 
-#define apic_read (apic_ops->read)
-#define apic_write (apic_ops->write)
-#define apic_icr_read (apic_ops->icr_read)
-#define apic_icr_write (apic_ops->icr_write)
-#define apic_wait_icr_idle (apic_ops->wait_icr_idle)
-#define safe_apic_wait_icr_idle (apic_ops->safe_wait_icr_idle)
+static inline u32 apic_read(u32 reg)
+{
+	return apic_ops->read(reg);
+}
+
+static inline void apic_write(u32 reg, u32 val)
+{
+	apic_ops->write(reg, val);
+}
+
+static inline u64 apic_icr_read(void)
+{
+	return apic_ops->icr_read();
+}
+
+static inline void apic_icr_write(u32 low, u32 high)
+{
+	apic_ops->icr_write(low, high);
+}
+
+static inline void apic_wait_icr_idle(void)
+{
+	apic_ops->wait_icr_idle();
+}
+
+static inline u32 safe_apic_wait_icr_idle(void)
+{
+	return apic_ops->safe_wait_icr_idle();
+}
 
 extern int get_physical_broadcast(void);
 
-- 
1.6.0.6

[PATCH] x86: add mp_find_ioapic_pin

[Jeremy Fitzhardinge]

Add mp_find_ioapic_pin() to find an IO APIC's specific pin from a GSI,
and use this function within acpi/boot.  Make it non-static so other
code can use it too.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
 arch/x86/include/asm/mpspec.h |    1 +
 arch/x86/kernel/acpi/boot.c   |   16 +++++++++++++---
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/arch/x86/include/asm/mpspec.h b/arch/x86/include/asm/mpspec.h
index b59371a..5916c8d 100644
--- a/arch/x86/include/asm/mpspec.h
+++ b/arch/x86/include/asm/mpspec.h
@@ -78,6 +78,7 @@ extern int acpi_probe_gsi(void);
 extern int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
 				u32 gsi, int triggering, int polarity);
 extern int mp_find_ioapic(int gsi);
+extern int mp_find_ioapic_pin(int ioapic, int gsi);
 #else
 static inline int
 mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 068b900..bba162c 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -887,6 +887,16 @@ int mp_find_ioapic(int gsi)
 	return -1;
 }
 
+int mp_find_ioapic_pin(int ioapic, int gsi)
+{
+	if (WARN_ON(ioapic == -1))
+		return -1;
+	if (WARN_ON(gsi > mp_ioapic_routing[ioapic].gsi_end))
+		return -1;
+
+	return gsi - mp_ioapic_routing[ioapic].gsi_base;
+}
+
 static u8 __init uniq_ioapic_id(u8 id)
 {
 #ifdef CONFIG_X86_32
@@ -1022,7 +1032,7 @@ void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)
 	ioapic = mp_find_ioapic(gsi);
 	if (ioapic < 0)
 		return;
-	pin = gsi - mp_ioapic_routing[ioapic].gsi_base;
+	pin = mp_find_ioapic_pin(ioapic, gsi);
 
 	/*
 	 * TBD: This check is for faulty timer entries, where the override
@@ -1142,7 +1152,7 @@ int mp_register_gsi(u32 gsi, int triggering, int polarity)
 		return gsi;
 	}
 
-	ioapic_pin = gsi - mp_ioapic_routing[ioapic].gsi_base;
+	ioapic_pin = mp_find_ioapic_pin(ioapic, gsi);
 
 #ifdef CONFIG_X86_32
 	if (ioapic_renumber_irq)
@@ -1231,7 +1241,7 @@ int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
 	mp_irq.srcbusirq = (((devfn >> 3) & 0x1f) << 2) | ((pin - 1) & 3);
 	ioapic = mp_find_ioapic(gsi);
 	mp_irq.dstapic = mp_ioapic_routing[ioapic].apic_id;
-	mp_irq.dstirq = gsi - mp_ioapic_routing[ioapic].gsi_base;
+	mp_irq.dstirq = mp_find_ioapic_pin(ioapic, gsi);
 
 	save_mp_irq(&mp_irq);
 #endif
-- 
1.6.0.6

[PATCH] x86: unstatic ioapic entry funcs

[Jeremy Fitzhardinge]

Unstatic ioapic_write_entry and setup_ioapic_entry functions so that
the Xen code can do its own ioapic routing setup.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
 arch/x86/include/asm/io_apic.h |    6 ++++++
 arch/x86/kernel/io_apic.c      |   10 +++++-----
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h
index 309d0e2..59cb4a1 100644
--- a/arch/x86/include/asm/io_apic.h
+++ b/arch/x86/include/asm/io_apic.h
@@ -169,6 +169,12 @@ extern void reinit_intr_remapped_IO_APIC(int);
 
 extern void probe_nr_irqs_gsi(void);
 
+extern int setup_ioapic_entry(int apic, int irq,
+			      struct IO_APIC_route_entry *entry,
+			      unsigned int destination, int trigger,
+			      int polarity, int vector);
+extern void ioapic_write_entry(int apic, int pin,
+			       struct IO_APIC_route_entry e);
 #else  /* !CONFIG_X86_IO_APIC */
 #define io_apic_assign_pci_irqs 0
 static const int timer_through_8259 = 0;
diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c
index 56e51eb..7248ca1 100644
--- a/arch/x86/kernel/io_apic.c
+++ b/arch/x86/kernel/io_apic.c
@@ -486,7 +486,7 @@ __ioapic_write_entry(int apic, int pin, struct IO_APIC_route_entry e)
 	io_apic_write(apic, 0x10 + 2*pin, eu.w1);
 }
 
-static void ioapic_write_entry(int apic, int pin, struct IO_APIC_route_entry e)
+void ioapic_write_entry(int apic, int pin, struct IO_APIC_route_entry e)
 {
 	unsigned long flags;
 	spin_lock_irqsave(&ioapic_lock, flags);
@@ -1478,10 +1478,10 @@ static void ioapic_register_intr(int irq, struct irq_desc *desc, unsigned long t
 					      handle_edge_irq, "edge");
 }
 
-static int setup_ioapic_entry(int apic_id, int irq,
-			      struct IO_APIC_route_entry *entry,
-			      unsigned int destination, int trigger,
-			      int polarity, int vector)
+int setup_ioapic_entry(int apic_id, int irq,
+		       struct IO_APIC_route_entry *entry,
+		       unsigned int destination, int trigger,
+		       int polarity, int vector)
 {
 	/*
 	 * add it to the IO-APIC irq-routing table:
-- 
1.6.0.6

[PATCH] x86: unstatic mp_find_ioapic so it can be used elsewhere

[Jeremy Fitzhardinge]

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
 arch/x86/include/asm/mpspec.h |    1 +
 arch/x86/kernel/acpi/boot.c   |    2 +-
 2 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/arch/x86/include/asm/mpspec.h b/arch/x86/include/asm/mpspec.h
index 8c56201..b59371a 100644
--- a/arch/x86/include/asm/mpspec.h
+++ b/arch/x86/include/asm/mpspec.h
@@ -77,6 +77,7 @@ extern int acpi_probe_gsi(void);
 #ifdef CONFIG_X86_IO_APIC
 extern int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
 				u32 gsi, int triggering, int polarity);
+extern int mp_find_ioapic(int gsi);
 #else
 static inline int
 mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index c334fe7..068b900 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -872,7 +872,7 @@ static struct {
 	DECLARE_BITMAP(pin_programmed, MP_MAX_IOAPIC_PIN + 1);
 } mp_ioapic_routing[MAX_IO_APICS];
 
-static int mp_find_ioapic(int gsi)
+int mp_find_ioapic(int gsi)
 {
 	int i = 0;
 
-- 
1.6.0.6

[PATCH] xen: expose enable_IO_APIC for 32-bit

[Ian Campbell]

enable_IO_APIC() is defined for both 32- and 64-bit x86, so it should
be declared for both.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
 arch/x86/include/asm/hw_irq.h |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
index 1b82781..370e1c8 100644
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -65,9 +65,7 @@ extern void disable_IO_APIC(void);
 extern int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn);
 extern void setup_ioapic_dest(void);
 
-#ifdef CONFIG_X86_64
 extern void enable_IO_APIC(void);
-#endif
 
 /* Statistics */
 extern atomic_t irq_err_count;
-- 
1.6.0.6

Re: [PATCH] xen: expose enable_IO_APIC for 32-bit

[Yinghai Lu]

On Mon, Feb 9, 2009 at 12:05 PM, Ian Campbell <ian.campbell@citrix.com> wrote:
> enable_IO_APIC() is defined for both 32- and 64-bit x86, so it should
> be declared for both.
>
> Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
> ---
>  arch/x86/include/asm/hw_irq.h |    2 --
>  1 files changed, 0 insertions(+), 2 deletions(-)
>
> diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
> index 1b82781..370e1c8 100644
> --- a/arch/x86/include/asm/hw_irq.h
> +++ b/arch/x86/include/asm/hw_irq.h
> @@ -65,9 +65,7 @@ extern void disable_IO_APIC(void);
>  extern int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn);
>  extern void setup_ioapic_dest(void);
>
> -#ifdef CONFIG_X86_64
>  extern void enable_IO_APIC(void);
> -#endif
>
>  /* Statistics */
>  extern atomic_t irq_err_count;
> --
> 1.6.0.6
>
> --

wonder if we should call enable_IO_APIC in 32bit like 64bit...
should be ok.

YH

Re: apic cleanups

[Ingo Molnar]

* Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> wrote:

> Hi all,
> 
> This series of patches (against tip/x86/apic) makes some fairly
> uncontroversial changes and cleanups to lay the groundwork for some more
> Xen-specific patches (which will no doubt cause more of a discussion).
> 
> These changes can also be pulled from
>    git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git x86/apic
> 
> Thanks,
> 	J
> 
> Ian Campbell (1):
>   xen: expose enable_IO_APIC for 32-bit
> 
> Jeremy Fitzhardinge (4):
>   x86: make apic_* operations inline functions
>   x86: unstatic mp_find_ioapic so it can be used elsewhere
>   x86: add mp_find_ioapic_pin
>   x86: unstatic ioapic entry funcs
> 
>  arch/x86/include/asm/apic.h    |   35 +++++++++++++++++++++++++++++------
>  arch/x86/include/asm/hw_irq.h  |    2 --
>  arch/x86/include/asm/io_apic.h |    6 ++++++
>  arch/x86/include/asm/mpspec.h  |    2 ++
>  arch/x86/kernel/acpi/boot.c    |   18 ++++++++++++++----
>  arch/x86/kernel/io_apic.c      |   10 +++++-----
>  6 files changed, 56 insertions(+), 17 deletions(-)

Pulled into tip:x86/apic, thanks guys!

	Ingo