From: Joerg Roedel <joerg.roedel@amd.com>
To: <x86@kernel.org>
Cc: <linux-kernel@vger.kernel.org>, <joro@8bytes.org>,
Suresh Siddha <suresh.b.siddha@intel.com>,
Yinghai Lu <yinghai@kernel.org>,
Sebastian Andrzej Siewior <sebastian@breakpoint.cc>,
Joerg Roedel <joerg.roedel@amd.com>
Subject: [PATCH 07/19] x86, io_apic: Introduce set_affinity function pointer
Date: Wed, 26 Sep 2012 12:44:39 +0200 [thread overview]
Message-ID: <1348656291-10375-8-git-send-email-joerg.roedel@amd.com> (raw)
In-Reply-To: <1348656291-10375-1-git-send-email-joerg.roedel@amd.com>
With interrupt remapping a special function is used to
change the affinity of an IO-APIC interrupt. Abstract this
with a function pointer.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
arch/x86/include/asm/io_apic.h | 4 ++++
arch/x86/include/asm/irq_remapping.h | 9 ---------
arch/x86/include/asm/x86_init.h | 6 ++++++
arch/x86/kernel/apic/io_apic.c | 17 +++++++----------
arch/x86/kernel/x86_init.c | 1 +
drivers/iommu/irq_remapping.c | 4 ++++
6 files changed, 22 insertions(+), 19 deletions(-)
diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h
index 21aa81e..a744cbb 100644
--- a/arch/x86/include/asm/io_apic.h
+++ b/arch/x86/include/asm/io_apic.h
@@ -182,6 +182,9 @@ extern void native_io_apic_modify(unsigned int apic, unsigned int reg, unsigned
extern void native_disable_io_apic(void);
extern void native_io_apic_print_entries(unsigned int apic, unsigned int nr_entries);
extern void intel_ir_io_apic_print_entries(unsigned int apic, unsigned int nr_entries);
+extern int native_ioapic_set_affinity(struct irq_data *,
+ const struct cpumask *,
+ bool);
static inline unsigned int io_apic_read(unsigned int apic, unsigned int reg)
{
@@ -228,6 +231,7 @@ static inline void disable_ioapic_support(void) { }
#define native_io_apic_modify NULL
#define native_disable_io_apic NULL
#define native_io_apic_print_entries NULL
+#define native_ioapic_set_affinity NULL
#endif
#endif /* _ASM_X86_IO_APIC_H */
diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h
index 0ee1e88..f1afa04 100644
--- a/arch/x86/include/asm/irq_remapping.h
+++ b/arch/x86/include/asm/irq_remapping.h
@@ -40,9 +40,6 @@ extern int setup_ioapic_remapped_entry(int irq,
unsigned int destination,
int vector,
struct io_apic_irq_attr *attr);
-extern int set_remapped_irq_affinity(struct irq_data *data,
- const struct cpumask *mask,
- bool force);
extern void free_remapped_irq(int irq);
extern void compose_remapped_msi_msg(struct pci_dev *pdev,
unsigned int irq, unsigned int dest,
@@ -68,12 +65,6 @@ static inline int setup_ioapic_remapped_entry(int irq,
{
return -ENODEV;
}
-static inline int set_remapped_irq_affinity(struct irq_data *data,
- const struct cpumask *mask,
- bool force)
-{
- return 0;
-}
static inline void free_remapped_irq(int irq) { }
static inline void compose_remapped_msi_msg(struct pci_dev *pdev,
unsigned int irq, unsigned int dest,
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index 1f49c8a..f5f712b 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -189,6 +189,9 @@ struct x86_msi_ops {
int (*setup_hpet_msi)(unsigned int irq, unsigned int id);
};
+struct irq_data;
+struct cpumask;
+
struct x86_io_apic_ops {
void (*init) (void);
unsigned int (*read) (unsigned int apic, unsigned int reg);
@@ -196,6 +199,9 @@ struct x86_io_apic_ops {
void (*modify) (unsigned int apic, unsigned int reg, unsigned int value);
void (*disable)(void);
void (*print_entries)(unsigned int apic, unsigned int nr_entries);
+ int (*set_affinity)(struct irq_data *data,
+ const struct cpumask *mask,
+ bool force);
};
extern struct x86_init_ops x86_init;
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 5ae0292..65c265ed 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -2378,9 +2378,10 @@ int __ioapic_set_affinity(struct irq_data *data, const struct cpumask *mask,
return 0;
}
-static int
-ioapic_set_affinity(struct irq_data *data, const struct cpumask *mask,
- bool force)
+
+int native_ioapic_set_affinity(struct irq_data *data,
+ const struct cpumask *mask,
+ bool force)
{
unsigned int dest, irq = data->irq;
unsigned long flags;
@@ -2579,8 +2580,7 @@ static void irq_remap_modify_chip_defaults(struct irq_chip *chip)
chip->irq_print_chip = ir_print_prefix;
chip->irq_ack = ir_ack_apic_edge;
chip->irq_eoi = ir_ack_apic_level;
-
- chip->irq_set_affinity = set_remapped_irq_affinity;
+ chip->irq_set_affinity = x86_io_apic_ops.set_affinity;
}
#endif /* CONFIG_IRQ_REMAP */
@@ -2591,7 +2591,7 @@ static struct irq_chip ioapic_chip __read_mostly = {
.irq_unmask = unmask_ioapic_irq,
.irq_ack = ack_apic_edge,
.irq_eoi = ack_apic_level,
- .irq_set_affinity = ioapic_set_affinity,
+ .irq_set_affinity = native_ioapic_set_affinity,
.irq_retrigger = ioapic_retrigger_irq,
};
@@ -3666,10 +3666,7 @@ void __init setup_ioapic_dest(void)
else
mask = apic->target_cpus();
- if (irq_remapping_enabled)
- set_remapped_irq_affinity(idata, mask, false);
- else
- ioapic_set_affinity(idata, mask, false);
+ x86_io_apic_ops.set_affinity(idata, mask, false);
}
}
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index 339e108..8806d0b 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -128,4 +128,5 @@ struct x86_io_apic_ops x86_io_apic_ops = {
.modify = native_io_apic_modify,
.disable = native_disable_io_apic,
.print_entries = native_io_apic_print_entries,
+ .set_affinity = native_ioapic_set_affinity,
};
diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index 984104b..ccf87e5 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -26,6 +26,9 @@ static struct irq_remap_ops *remap_ops;
static int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec);
static int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq,
int index, int sub_handle);
+static int set_remapped_irq_affinity(struct irq_data *data,
+ const struct cpumask *mask,
+ bool force);
static void irq_remapping_disable_io_apic(void)
{
@@ -87,6 +90,7 @@ error:
static void __init irq_remapping_modify_x86_ops(void)
{
x86_io_apic_ops.disable = irq_remapping_disable_io_apic;
+ x86_io_apic_ops.set_affinity = set_remapped_irq_affinity;
x86_msi.setup_msi_irqs = irq_remapping_setup_msi_irqs;
x86_msi.setup_hpet_msi = setup_hpet_msi_remapped;
}
--
1.7.9.5
next prev parent reply other threads:[~2012-09-26 10:49 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-26 10:44 [PATCH 00/19 v3] Improve IRQ remapping abstraction in x86 core code Joerg Roedel
2012-09-26 10:44 ` [PATCH 01/19] x86, apic: Move irq_remapping_enabled checks into IRQ-remapping code Joerg Roedel
2012-09-26 10:44 ` [PATCH 02/19] x86, apic: Mask IO-APIC and PIC unconditionally on LAPIC resume Joerg Roedel
2012-09-26 10:44 ` [PATCH 03/19] x86, io_apic: Introduce x86_io_apic_ops.disable() Joerg Roedel
2012-09-26 10:44 ` [PATCH 04/19] x86, io_apic: Introduce x86_io_apic_ops.print_entries for debugging Joerg Roedel
2012-09-26 10:44 ` [PATCH 05/19] x86, hpet: Introduce x86_msi_ops.setup_hpet_msi Joerg Roedel
2012-09-26 10:44 ` [PATCH 06/19] x86, msi: Use IRQ remapping specific setup_msi_irqs routine Joerg Roedel
2012-09-26 10:44 ` Joerg Roedel [this message]
2012-09-26 10:44 ` [PATCH 08/19] x86, io_apic: Convert setup_ioapic_entry to function pointer Joerg Roedel
2012-09-26 10:44 ` [PATCH 09/19] x86, io_apic: Move irq_remapping_enabled checks out of check_timer() Joerg Roedel
2012-09-26 10:44 ` [PATCH 10/19] x86, io_apic: Remove irq_remapping_enabled check in setup_timer_IRQ0_pin Joerg Roedel
2012-09-26 10:44 ` [PATCH 11/19] x86, irq: Move irq_remapping_enabled declaration to iommu code Joerg Roedel
2012-09-26 10:44 ` [PATCH 12/19] x86, irq: Add data structure to keep AMD specific irq remapping information Joerg Roedel
2012-09-26 10:44 ` [PATCH 13/19] x86, io-apic: Move CONFIG_IRQ_REMAP code out of x86 core Joerg Roedel
2012-09-26 10:44 ` [PATCH 14/19] x86, io-apic: Remove !irq_remapped() check from __target_IO_APIC_irq() Joerg Roedel
2012-09-26 10:44 ` [PATCH 15/19] x86, irq: Move irq_remapped() check into free_remapped_irq Joerg Roedel
2012-09-26 10:44 ` [PATCH 16/19] x86, irq: Introduce setup_remapped_irq() Joerg Roedel
2012-09-26 10:44 ` [PATCH 17/19] x86, msi: Introduce x86_msi.compose_msi_msg call-back Joerg Roedel
2012-09-26 10:44 ` [PATCH 18/19] x86, io_apic: Introduce eoi_ioapic_pin call-back Joerg Roedel
2012-09-26 10:44 ` [PATCH 19/19] x86, irq: Move irq_remapped out of x86 core code Joerg Roedel
2012-11-01 21:37 ` [PATCH 00/19 v3] Improve IRQ remapping abstraction in " Sebastian Andrzej Siewior
-- strict thread matches above, loose matches on Subject: below --
2012-11-20 13:12 [PATCH 00/19 v4] " Joerg Roedel
2012-11-20 13:12 ` [PATCH 07/19] x86, io_apic: Introduce set_affinity function pointer Joerg Roedel
2012-08-20 13:55 [PATCH 00/19 v2] Improve IRQ remapping abstraction in x86 core code Joerg Roedel
2012-08-20 13:55 ` [PATCH 07/19] x86, io_apic: Introduce set_affinity function pointer Joerg Roedel
2012-08-07 15:43 [PATCH 0/19] Improve IRQ remapping abstraction in x86 core code Joerg Roedel
2012-08-07 15:43 ` [PATCH 07/19] x86, io_apic: Introduce set_affinity function pointer Joerg Roedel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1348656291-10375-8-git-send-email-joerg.roedel@amd.com \
--to=joerg.roedel@amd.com \
--cc=joro@8bytes.org \
--cc=linux-kernel@vger.kernel.org \
--cc=sebastian@breakpoint.cc \
--cc=suresh.b.siddha@intel.com \
--cc=x86@kernel.org \
--cc=yinghai@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Powered by JetHome