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authorThomas Gleixner <tglx@linutronix.de>2009-08-29 16:24:51 +0200
committerH. Peter Anvin <hpa@zytor.com>2010-02-19 16:12:29 -0800
commitb72d0db9dd41da1f2ec6274b03e8909583c64e41 (patch)
tree6424768067546f3aa4bd2e5d0a11d6459a6aad51 /arch/x86/include/asm
parentcf4c43dd439b90a1a876b3f836ebe745abb9a269 (diff)
downloadblackbird-op-linux-b72d0db9dd41da1f2ec6274b03e8909583c64e41.tar.gz
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x86: Move pci init function to x86_init
The PCI initialization in pci_subsys_init() is a mess. pci_numaq_init, pci_acpi_init, pci_visws_init and pci_legacy_init are called and each implementation checks and eventually modifies the global variable pcibios_scanned. x86_init functions allow us to do this more elegant. The pci.init function pointer is preset to pci_legacy_init. numaq, acpi and visws can modify the pointer in their early setup functions. The functions return 0 when they did the full initialization including bus scan. A non zero return value indicates that pci_legacy_init needs to be called either because the selected function failed or wants the generic bus scan in pci_legacy_init to happen (e.g. visws). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> LKML-Reference: <43F901BD926A4E43B106BF17856F07559FB80CFE@orsmsx508.amr.corp.intel.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/include/asm')
-rw-r--r--arch/x86/include/asm/numaq.h1
-rw-r--r--arch/x86/include/asm/pci.h9
-rw-r--r--arch/x86/include/asm/pci_x86.h14
-rw-r--r--arch/x86/include/asm/setup.h2
-rw-r--r--arch/x86/include/asm/visws/cobalt.h2
-rw-r--r--arch/x86/include/asm/x86_init.h9
6 files changed, 31 insertions, 6 deletions
diff --git a/arch/x86/include/asm/numaq.h b/arch/x86/include/asm/numaq.h
index 9f0a5f5d29ec..ef6bf81f8460 100644
--- a/arch/x86/include/asm/numaq.h
+++ b/arch/x86/include/asm/numaq.h
@@ -30,6 +30,7 @@
extern int found_numaq;
extern int get_memcfg_numaq(void);
+extern int pci_numaq_init(void);
extern void *xquad_portio;
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index ada8c201d513..8bd433ccc242 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -45,8 +45,15 @@ static inline int pci_proc_domain(struct pci_bus *bus)
#ifdef CONFIG_PCI
extern unsigned int pcibios_assign_all_busses(void);
+extern int pci_legacy_init(void);
+# ifdef CONFIG_ACPI
+# define x86_default_pci_init pci_acpi_init
+# else
+# define x86_default_pci_init pci_legacy_init
+# endif
#else
-#define pcibios_assign_all_busses() 0
+# define pcibios_assign_all_busses() 0
+# define x86_default_pci_init NULL
#endif
extern unsigned long pci_mem_start;
diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h
index b4bf9a942ed0..440124f1224d 100644
--- a/arch/x86/include/asm/pci_x86.h
+++ b/arch/x86/include/asm/pci_x86.h
@@ -82,7 +82,6 @@ struct irq_routing_table {
extern unsigned int pcibios_irq_mask;
-extern int pcibios_scanned;
extern spinlock_t pci_config_lock;
extern int (*pcibios_enable_irq)(struct pci_dev *dev);
@@ -112,9 +111,8 @@ extern void __init dmi_check_skip_isa_align(void);
/* some common used subsys_initcalls */
extern int __init pci_acpi_init(void);
extern int __init pcibios_irq_init(void);
-extern int __init pci_visws_init(void);
-extern int __init pci_numaq_init(void);
extern int __init pcibios_init(void);
+extern int pci_legacy_init(void);
/* pci-mmconfig.c */
@@ -182,3 +180,13 @@ static inline void mmio_config_writel(void __iomem *pos, u32 val)
{
asm volatile("movl %%eax,(%1)" : : "a" (val), "r" (pos) : "memory");
}
+
+#ifdef CONFIG_PCI
+# ifdef CONFIG_ACPI
+# define x86_default_pci_init pci_acpi_init
+# else
+# define x86_default_pci_init pci_legacy_init
+# endif
+#else
+# define x86_default_pci_init NULL
+#endif
diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h
index 18e496c98ff0..86b1506f4179 100644
--- a/arch/x86/include/asm/setup.h
+++ b/arch/x86/include/asm/setup.h
@@ -37,10 +37,8 @@ void setup_bios_corruption_check(void);
#ifdef CONFIG_X86_VISWS
extern void visws_early_detect(void);
-extern int is_visws_box(void);
#else
static inline void visws_early_detect(void) { }
-static inline int is_visws_box(void) { return 0; }
#endif
extern unsigned long saved_video_mode;
diff --git a/arch/x86/include/asm/visws/cobalt.h b/arch/x86/include/asm/visws/cobalt.h
index 166adf61e770..2edb37637ead 100644
--- a/arch/x86/include/asm/visws/cobalt.h
+++ b/arch/x86/include/asm/visws/cobalt.h
@@ -122,4 +122,6 @@ extern char visws_board_type;
extern char visws_board_rev;
+extern int pci_visws_init(void);
+
#endif /* _ASM_X86_VISWS_COBALT_H */
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index ea0e8ea15e15..f145d843f03d 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -98,6 +98,14 @@ struct x86_init_iommu {
int (*iommu_init)(void);
};
+ /*
+ * struct x86_init_pci - platform specific pci init functions
+ * @init: platform specific pci init
+ */
+struct x86_init_pci {
+ int (*init)(void);
+};
+
/**
* struct x86_init_ops - functions for platform specific setup
*
@@ -110,6 +118,7 @@ struct x86_init_ops {
struct x86_init_paging paging;
struct x86_init_timers timers;
struct x86_init_iommu iommu;
+ struct x86_init_pci pci;
};
/**
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