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Subject[PATCH 2/3] x86/apic_ops: Replace apic_ops with x86_apic_ops.
Date
. which makes the code fit within the rest of the x86_ops functions.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
arch/x86/include/asm/io_apic.h | 40 +++++++++++++++++++++--------
arch/x86/include/asm/x86_init.h | 8 ++++++
arch/x86/kernel/apic/io_apic.c | 54 ++++----------------------------------
arch/x86/kernel/setup.c | 2 +-
arch/x86/kernel/x86_init.c | 8 ++++++
5 files changed, 52 insertions(+), 60 deletions(-)
diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h
index 190d8c2..bb876ce 100644
--- a/arch/x86/include/asm/io_apic.h
+++ b/arch/x86/include/asm/io_apic.h
@@ -5,6 +5,7 @@
#include <asm/mpspec.h>
#include <asm/apicdef.h>
#include <asm/irq_vectors.h>
+#include <asm/x86_init.h>

/*
* Intel IO-APIC support for SMP and UP systems.
@@ -21,15 +22,6 @@
#define IO_APIC_REDIR_LEVEL_TRIGGER (1 << 15)
#define IO_APIC_REDIR_MASKED (1 << 16)

-struct io_apic_ops {
- void (*init)(void);
- unsigned int (*read)(unsigned int apic, unsigned int reg);
- void (*write)(unsigned int apic, unsigned int reg, unsigned int value);
- void (*modify)(unsigned int apic, unsigned int reg, unsigned int value);
-};
-
-void __init set_io_apic_ops(const struct io_apic_ops *);
-
/*
* The structure of the IO-APIC:
*/
@@ -156,7 +148,6 @@ struct io_apic_irq_attr;
extern int io_apic_set_pci_routing(struct device *dev, int irq,
struct io_apic_irq_attr *irq_attr);
void setup_IO_APIC_irq_extra(u32 gsi);
-extern void ioapic_and_gsi_init(void);
extern void ioapic_insert_resources(void);

int io_apic_setup_irq_pin_once(unsigned int irq, int node, struct io_apic_irq_attr *attr);
@@ -185,12 +176,35 @@ extern void mp_save_irq(struct mpc_intsrc *m);

extern void disable_ioapic_support(void);

+
+void __init native_ioapic_init_mappings(void);
+unsigned int native_ioapic_read(unsigned int apic, unsigned int reg);
+void native_ioapic_write(unsigned int apic, unsigned int reg,
+ unsigned int val);
+void native_ioapic_modify(unsigned int apic, unsigned int reg,
+ unsigned int val);
+
+static inline unsigned int io_apic_read(unsigned int apic, unsigned int reg)
+{
+ return x86_apic.read(apic, reg);
+}
+
+static inline void io_apic_write(unsigned int apic, unsigned int reg,
+ unsigned int value)
+{
+ x86_apic.write(apic, reg, value);
+}
+
+static inline void io_apic_modify(unsigned int apic, unsigned int reg,
+ unsigned int value)
+{
+ x86_apic.modify(apic, reg, value);
+}
#else /* !CONFIG_X86_IO_APIC */

#define io_apic_assign_pci_irqs 0
#define setup_ioapic_ids_from_mpc x86_init_noop
static const int timer_through_8259 = 0;
-static inline void ioapic_and_gsi_init(void) { }
static inline void ioapic_insert_resources(void) { }
#define gsi_top (NR_IRQS_LEGACY)
static inline int mp_find_ioapic(u32 gsi) { return 0; }
@@ -212,6 +226,10 @@ static inline int restore_ioapic_entries(void)

static inline void mp_save_irq(struct mpc_intsrc *m) { };
static inline void disable_ioapic_support(void) { }
+#define native_ioapic_init_mappings NULL
+#define native_ioapic_read NULL
+#define native_ioapic_write NULL
+#define native_ioapic_modify NULL
#endif

#endif /* _ASM_X86_IO_APIC_H */
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index 517d476..0fdf65b 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -182,10 +182,18 @@ struct x86_msi_ops {
void (*restore_msi_irqs)(struct pci_dev *dev, int irq);
};

+struct x86_apic_ops {
+ void (*init)(void);
+ unsigned int (*read)(unsigned int apic, unsigned int reg);
+ void (*write)(unsigned int apic, unsigned int reg, unsigned int value);
+ void (*modify)(unsigned int apic, unsigned int reg, unsigned int value);
+};
+
extern struct x86_init_ops x86_init;
extern struct x86_cpuinit_ops x86_cpuinit;
extern struct x86_platform_ops x86_platform;
extern struct x86_msi_ops x86_msi;
+extern struct x86_apic_ops x86_apic;

extern void x86_init_noop(void);
extern void x86_init_uint_noop(unsigned int unused);
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index bf120234..9a15d4b 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -67,25 +67,6 @@
#define for_each_irq_pin(entry, head) \
for (entry = head; entry; entry = entry->next)

-static void __init __ioapic_init_mappings(void);
-static unsigned int __io_apic_read(unsigned int apic, unsigned int reg);
-static void __io_apic_write(unsigned int apic, unsigned int reg,
- unsigned int val);
-static void __io_apic_modify(unsigned int apic, unsigned int reg,
- unsigned int val);
-
-static struct io_apic_ops io_apic_ops = {
- .init = __ioapic_init_mappings,
- .read = __io_apic_read,
- .write = __io_apic_write,
- .modify = __io_apic_modify,
-};
-
-void __init set_io_apic_ops(const struct io_apic_ops *ops)
-{
- io_apic_ops = *ops;
-}
-
/*
* Is the SiS APIC rmw bug present ?
* -1 = don't know, 0 = no, 1 = yes
@@ -313,24 +294,6 @@ static void free_irq_at(unsigned int at, struct irq_cfg *cfg)
irq_free_desc(at);
}

-static inline unsigned int io_apic_read(unsigned int apic, unsigned int reg)
-{
- return io_apic_ops.read(apic, reg);
-}
-
-static inline void io_apic_write(unsigned int apic, unsigned int reg,
- unsigned int value)
-{
- io_apic_ops.write(apic, reg, value);
-}
-
-static inline void io_apic_modify(unsigned int apic, unsigned int reg,
- unsigned int value)
-{
- io_apic_ops.modify(apic, reg, value);
-}
-
-
struct io_apic {
unsigned int index;
unsigned int unused[3];
@@ -351,15 +314,15 @@ static inline void io_apic_eoi(unsigned int apic, unsigned int vector)
writel(vector, &io_apic->eoi);
}

-static unsigned int __io_apic_read(unsigned int apic, unsigned int reg)
+unsigned int native_ioapic_read(unsigned int apic, unsigned int reg)
{
struct io_apic __iomem *io_apic = io_apic_base(apic);
writel(reg, &io_apic->index);
return readl(&io_apic->data);
}

-static void __io_apic_write(unsigned int apic, unsigned int reg,
- unsigned int value)
+void native_ioapic_write(unsigned int apic, unsigned int reg,
+ unsigned int value)
{
struct io_apic __iomem *io_apic = io_apic_base(apic);
writel(reg, &io_apic->index);
@@ -372,8 +335,8 @@ static void __io_apic_write(unsigned int apic, unsigned int reg,
*
* Older SiS APIC requires we rewrite the index register
*/
-static void __io_apic_modify(unsigned int apic, unsigned int reg,
- unsigned int value)
+void native_ioapic_modify(unsigned int apic, unsigned int reg,
+ unsigned int value)
{
struct io_apic __iomem *io_apic = io_apic_base(apic);

@@ -3910,12 +3873,7 @@ static struct resource * __init ioapic_setup_resources(int nr_ioapics)
return res;
}

-void __init ioapic_and_gsi_init(void)
-{
- io_apic_ops.init();
-}
-
-static void __init __ioapic_init_mappings(void)
+void __init native_ioapic_init_mappings(void)
{
unsigned long ioapic_phys, idx = FIX_IO_APIC_BASE_0;
struct resource *ioapic_res;
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index d7d5099..87a0fcd 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1016,7 +1016,7 @@ void __init setup_arch(char **cmdline_p)
init_cpu_to_node();

init_apic_mappings();
- ioapic_and_gsi_init();
+ x86_apic.init();

kvm_guest_init();

diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index 947a06c..c5d0697 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -18,6 +18,7 @@
#include <asm/e820.h>
#include <asm/time.h>
#include <asm/irq.h>
+#include <asm/io_apic.h>
#include <asm/pat.h>
#include <asm/tsc.h>
#include <asm/iommu.h>
@@ -117,3 +118,10 @@ struct x86_msi_ops x86_msi = {
.teardown_msi_irqs = default_teardown_msi_irqs,
.restore_msi_irqs = default_restore_msi_irqs,
};
+
+struct x86_apic_ops x86_apic = {
+ .init = native_ioapic_init_mappings,
+ .read = native_ioapic_read,
+ .write = native_ioapic_write,
+ .modify = native_ioapic_modify,
+};
--
1.7.7.5


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