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Subject[PATCH 5/5] htirq: Tidy up the htirq code
Date
This moves the declarations for the architecture helpers into
include/linux/htirq.h from the generic include/linux/pci.h.
Hopefully this will make this distinction clearer.

htirq.h is included where it is needed.

The dependency on the msi code is fixed and removed.

The Makefile is tidied up.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
---
arch/i386/kernel/io_apic.c | 5 ++---
arch/x86_64/kernel/io_apic.c | 1 +
drivers/pci/Kconfig | 1 -
drivers/pci/Makefile | 4 +++-
drivers/pci/htirq.c | 1 +
include/linux/htirq.h | 15 +++++++++++++++
include/linux/pci.h | 11 -----------
7 files changed, 22 insertions(+), 16 deletions(-)
diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index 5a12527..b7287fb 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -33,6 +33,7 @@ #include <linux/module.h>
#include <linux/sysdev.h>
#include <linux/pci.h>
#include <linux/msi.h>
+#include <linux/htirq.h>

#include <asm/io.h>
#include <asm/smp.h>
@@ -2409,9 +2410,8 @@ static int __init ioapic_init_sysfs(void

device_initcall(ioapic_init_sysfs);

-#ifdef CONFIG_PCI_MSI
/*
- * Dynamic irq allocate and deallocation for MSI
+ * Dynamic irq allocate and deallocation
*/
int create_irq(void)
{
@@ -2450,7 +2450,6 @@ void destroy_irq(unsigned int irq)
irq_vector[irq] = 0;
spin_unlock_irqrestore(&vector_lock, flags);
}
-#endif /* CONFIG_PCI_MSI */

/*
* MSI mesage composition
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index e55028f..91728d9 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -31,6 +31,7 @@ #include <linux/mc146818rtc.h>
#include <linux/acpi.h>
#include <linux/sysdev.h>
#include <linux/msi.h>
+#include <linux/htirq.h>
#ifdef CONFIG_ACPI
#include <acpi/acpi_bus.h>
#endif
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 0af6d72..3029412 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -55,7 +55,6 @@ config PCI_DEBUG
config HT_IRQ
bool "Interrupts on hypertransport devices"
default y
- depends on PCI_MSI
depends on X86_LOCAL_APIC && X86_IO_APIC
help
This allows native hypertransport devices to use interrupts.
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index 04694ec..e3beb78 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -17,6 +17,9 @@ obj-$(CONFIG_HOTPLUG_PCI) += hotplug/
# Build the PCI MSI interrupt support
obj-$(CONFIG_PCI_MSI) += msi.o

+# Build the Hypertransport interrupt support
+obj-$(CONFIG_HT_IRQ) += htirq.o
+
#
# Some architectures use the generic PCI setup functions
#
@@ -29,7 +32,6 @@ obj-$(CONFIG_PPC32) += setup-irq.o
obj-$(CONFIG_PPC64) += setup-bus.o
obj-$(CONFIG_MIPS) += setup-bus.o setup-irq.o
obj-$(CONFIG_X86_VISWS) += setup-irq.o
-obj-$(CONFIG_HT_IRQ) += htirq.o

#
# ACPI Related PCI FW Functions
diff --git a/drivers/pci/htirq.c b/drivers/pci/htirq.c
index 4ba4635..0e27f24 100644
--- a/drivers/pci/htirq.c
+++ b/drivers/pci/htirq.c
@@ -11,6 +11,7 @@ #include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/gfp.h>
+#include <linux/htirq.h>

/* Global ht irq lock.
*
diff --git a/include/linux/htirq.h b/include/linux/htirq.h
new file mode 100644
index 0000000..1f15ce2
--- /dev/null
+++ b/include/linux/htirq.h
@@ -0,0 +1,15 @@
+#ifndef LINUX_HTIRQ_H
+#define LINUX_HTIRQ_H
+
+/* Helper functions.. */
+void write_ht_irq_low(unsigned int irq, u32 data);
+void write_ht_irq_high(unsigned int irq, u32 data);
+u32 read_ht_irq_low(unsigned int irq);
+u32 read_ht_irq_high(unsigned int irq);
+void mask_ht_irq(unsigned int irq);
+void unmask_ht_irq(unsigned int irq);
+
+/* The arch hook for getting things started */
+int arch_setup_ht_irq(unsigned int irq, struct pci_dev *dev);
+
+#endif /* LINUX_HTIRQ_H */
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 9fa0740..5bc4659 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -619,20 +619,9 @@ extern void msi_remove_pci_irq_vectors(s
#endif

#ifdef CONFIG_HT_IRQ
-/* Helper functions.. */
-void write_ht_irq_low(unsigned int irq, u32 data);
-void write_ht_irq_high(unsigned int irq, u32 data);
-u32 read_ht_irq_low(unsigned int irq);
-u32 read_ht_irq_high(unsigned int irq);
-void mask_ht_irq(unsigned int irq);
-void unmask_ht_irq(unsigned int irq);
-
/* The functions a driver should call */
int ht_create_irq(struct pci_dev *dev, int idx);
void ht_destroy_irq(unsigned int irq);
-
-/* The arch hook for getting things started */
-int arch_setup_ht_irq(unsigned int irq, struct pci_dev *dev);
#endif /* CONFIG_HT_IRQ */

extern void pci_block_user_cfg_access(struct pci_dev *dev);
--
1.4.2.rc3.g7e18e-dirty
-
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