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Subject[PATCH 08/12] Allow xen platform pci device to be compiled as a module
Date
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
arch/x86/xen/enlighten.c | 3 +++
drivers/xen/events.c | 1 +
drivers/xen/grant-table.c | 6 +++++-
drivers/xen/manage.c | 14 +++++++++++---
drivers/xen/xenbus/xenbus_probe.c | 1 +
include/xen/platform_pci.h | 18 ++++--------------
6 files changed, 25 insertions(+), 18 deletions(-)

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 23b8200..77ba321 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -85,7 +85,9 @@ struct shared_info xen_dummy_shared_info;
void *xen_initial_gdt;

int xen_have_vector_callback;
+EXPORT_SYMBOL_GPL(xen_have_vector_callback);
int xen_platform_pci;
+EXPORT_SYMBOL_GPL(xen_platform_pci);
static int unplug;

/*
@@ -1297,6 +1299,7 @@ int xen_set_callback_via(uint64_t via)
a.value = via;
return HYPERVISOR_hvm_op(HVMOP_set_param, &a);
}
+EXPORT_SYMBOL_GPL(xen_set_callback_via);

void do_hvm_pv_evtchn_intr(void)
{
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index cfc6d96..4840a03 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -695,6 +695,7 @@ void xen_hvm_evtchn_do_upcall(struct pt_regs *regs)
{
__xen_evtchn_do_upcall(regs);
}
+EXPORT_SYMBOL_GPL(xen_hvm_evtchn_do_upcall);

/* Rebind a new event channel to an existing irq. */
void rebind_evtchn_irq(int evtchn, int irq)
diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c
index 6f5f3ba..f936d30 100644
--- a/drivers/xen/grant-table.c
+++ b/drivers/xen/grant-table.c
@@ -56,6 +56,9 @@
#define GNTTAB_LIST_END 0xffffffff
#define GREFS_PER_GRANT_FRAME (PAGE_SIZE / sizeof(struct grant_entry))

+unsigned long (*alloc_xen_mmio_hook)(unsigned long len);
+EXPORT_SYMBOL_GPL(alloc_xen_mmio_hook);
+
static grant_ref_t **gnttab_list;
static unsigned int nr_grant_frames;
static unsigned int boot_max_nr_grant_frames;
@@ -514,7 +517,7 @@ int gnttab_resume(void)
return gnttab_map(0, nr_grant_frames - 1);

if (!hvm_pv_resume_frames) {
- hvm_pv_resume_frames = alloc_xen_mmio(PAGE_SIZE * max_nr_gframes);
+ hvm_pv_resume_frames = alloc_xen_mmio_hook(PAGE_SIZE * max_nr_gframes);
shared = ioremap(hvm_pv_resume_frames, PAGE_SIZE * max_nr_gframes);
if (shared == NULL) {
printk(KERN_WARNING
@@ -600,6 +603,7 @@ int gnttab_init(void)
kfree(gnttab_list);
return -ENOMEM;
}
+EXPORT_SYMBOL_GPL(gnttab_init);

static int __devinit __gnttab_init(void)
{
diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
index a73edd8..49ee52d 100644
--- a/drivers/xen/manage.c
+++ b/drivers/xen/manage.c
@@ -34,6 +34,13 @@ enum shutdown_state {
SHUTDOWN_HALT = 4,
};

+void (*platform_pci_resume_hook)(void);
+EXPORT_SYMBOL_GPL(platform_pci_resume_hook);
+void (*platform_pci_disable_irq_hook)(void);
+EXPORT_SYMBOL_GPL(platform_pci_disable_irq_hook);
+void (*platform_pci_enable_irq_hook)(void);
+EXPORT_SYMBOL_GPL(platform_pci_enable_irq_hook);
+
/* Ignore multiple shutdown requests. */
static enum shutdown_state shutting_down = SHUTDOWN_INVALID;

@@ -52,7 +59,7 @@ static int xen_hvm_suspend(void *data)

if (!*cancelled) {
xen_irq_resume();
- platform_pci_resume();
+ platform_pci_resume_hook();
}

return 0;
@@ -119,7 +126,7 @@ static void do_hvm_suspend(void)
printk(KERN_DEBUG "suspending xenstore... ");
xenbus_suspend();
printk(KERN_DEBUG "xenstore suspended\n");
- platform_pci_disable_irq();
+ platform_pci_disable_irq_hook();

err = stop_machine(xen_hvm_suspend, &cancelled, cpumask_of(0));
if (err) {
@@ -127,7 +134,7 @@ static void do_hvm_suspend(void)
cancelled = 1;
}

- platform_pci_enable_irq();
+ platform_pci_enable_irq_hook();

if (!cancelled) {
xen_arch_resume();
@@ -357,5 +364,6 @@ int xen_setup_shutdown_event(void)

return 0;
}
+EXPORT_SYMBOL_GPL(xen_setup_shutdown_event);

subsys_initcall(__setup_shutdown_event);
diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c
index a679205..f83e083 100644
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -892,6 +892,7 @@ int xenbus_probe_init(void)
out_error:
return err;
}
+EXPORT_SYMBOL_GPL(xenbus_probe_init);

postcore_initcall(__xenbus_probe_init);

diff --git a/include/xen/platform_pci.h b/include/xen/platform_pci.h
index ced434d..c3c2527 100644
--- a/include/xen/platform_pci.h
+++ b/include/xen/platform_pci.h
@@ -29,19 +29,9 @@
#define XEN_IOPORT_LINUX_PRODNUM 0xffff
#define XEN_IOPORT_LINUX_DRVVER ((LINUX_VERSION_CODE << 8) + 0x0)

-#ifdef CONFIG_XEN_PLATFORM_PCI
-unsigned long alloc_xen_mmio(unsigned long len);
-void platform_pci_resume(void);
-void platform_pci_disable_irq(void);
-void platform_pci_enable_irq(void);
-#else
-static inline unsigned long alloc_xen_mmio(unsigned long len)
-{
- return ~0UL;
-}
-static inline void platform_pci_resume(void) {}
-static inline void platform_pci_disable_irq(void) {}
-static inline void platform_pci_enable_irq(void) {}
-#endif
+extern unsigned long (*alloc_xen_mmio_hook)(unsigned long len);
+extern void (*platform_pci_resume_hook)(void);
+extern void (*platform_pci_disable_irq_hook)(void);
+extern void (*platform_pci_enable_irq_hook)(void);

#endif /* _XEN_PLATFORM_PCI_H */
--
1.5.4.3


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