[PATCH part3 v12 08/10] PCI: Introduce common pci_domain_nr() and remove platform specific code

Yijing Wang
2015-07-20T12:01:16Z

Now pci_host_bridge holds the domain number, we could
introduce common pci_domain_nr(), and remove platform specific code.

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
---
arch/alpha/include/asm/pci.h | 2 --
arch/ia64/include/asm/pci.h | 1 -
arch/microblaze/include/asm/pci.h | 2 --
arch/microblaze/pci/pci-common.c | 11 -----------
arch/mips/include/asm/pci.h | 2 --
arch/powerpc/include/asm/pci.h | 2 --
arch/powerpc/kernel/pci-common.c | 11 -----------
arch/s390/include/asm/pci.h | 1 -
arch/s390/pci/pci.c | 6 ------
arch/sh/include/asm/pci.h | 2 --
arch/sparc/include/asm/pci_64.h | 1 -
arch/sparc/kernel/pci.c | 17 -----------------
arch/tile/include/asm/pci.h | 2 --
arch/x86/include/asm/pci.h | 6 ------
drivers/pci/pci.c | 8 ++++++++
include/linux/pci.h | 7 +------
16 files changed, 9 insertions(+), 72 deletions(-)

diff --git a/arch/alpha/include/asm/pci.h b/arch/alpha/include/asm/pci.h
index 98f2eee..1f50c81 100644
--- a/arch/alpha/include/asm/pci.h
+++ b/arch/alpha/include/asm/pci.h
@@ -79,8 +79,6 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
return channel ? 15 : 14;
}

-#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
-
static inline int pci_proc_domain(struct pci_bus *bus)
{
struct pci_controller *hose = bus->sysdata;
diff --git a/arch/ia64/include/asm/pci.h b/arch/ia64/include/asm/pci.h
index 36d2c1e..ba6c40a 100644
--- a/arch/ia64/include/asm/pci.h
+++ b/arch/ia64/include/asm/pci.h
@@ -80,7 +80,6 @@ struct pci_controller {

#define PCI_CONTROLLER(busdev) ((struct pci_controller *) busdev->sysdata)
-#define pci_domain_nr(busdev) (PCI_CONTROLLER(busdev)->segment)

extern struct pci_ops pci_root_ops;

diff --git a/arch/microblaze/include/asm/pci.h b/arch/microblaze/include/asm/pci.h
index dc9eb66..a452163 100644
--- a/arch/microblaze/include/asm/pci.h
+++ b/arch/microblaze/include/asm/pci.h
@@ -42,8 +42,6 @@
*/
#define pcibios_assign_all_busses() 0

-extern int pci_domain_nr(struct pci_bus *bus);
-
/* Decide whether to display the domain number in /proc */
extern int pci_proc_domain(struct pci_bus *bus);

diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index d232c8a..6f64908 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -123,17 +123,6 @@ unsigned long pci_address_to_pio(phys_addr_t address)
}
EXPORT_SYMBOL_GPL(pci_address_to_pio);

-/*
- * Return the domain number for this bus.
- */
-int pci_domain_nr(struct pci_bus *bus)
-{
- struct pci_controller *hose = pci_bus_to_host(bus);
-
- return hose->global_number;
-}
-EXPORT_SYMBOL(pci_domain_nr);
-
/* This routine is meant to be used early during boot, when the
* PCI bus numbers have not yet been assigned, and you need to
* issue PCI config cycles to an OF device.
diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h
index 98c31e5..8757775 100644
--- a/arch/mips/include/asm/pci.h
+++ b/arch/mips/include/asm/pci.h
@@ -114,8 +114,6 @@ struct pci_dev;
extern unsigned int PCI_DMA_BUS_IS_PHYS;

#ifdef CONFIG_PCI_DOMAINS
-#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
-
static inline int pci_proc_domain(struct pci_bus *bus)
{
struct pci_controller *hose = bus->sysdata;
diff --git a/arch/powerpc/include/asm/pci.h b/arch/powerpc/include/asm/pci.h
index 3453bd8..f83b8c8 100644
--- a/arch/powerpc/include/asm/pci.h
+++ b/arch/powerpc/include/asm/pci.h
@@ -73,8 +73,6 @@ extern struct dma_map_ops *get_pci_dma_ops(void);

#endif /* CONFIG_PPC64 */

-extern int pci_domain_nr(struct pci_bus *bus);
-
/* Decide whether to display the domain number in /proc */
extern int pci_proc_domain(struct pci_bus *bus);

diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 3e398c8..42928a0 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -196,17 +196,6 @@ unsigned long pci_address_to_pio(phys_addr_t address)
}
EXPORT_SYMBOL_GPL(pci_address_to_pio);

-/*
- * Return the domain number for this bus.
- */
-int pci_domain_nr(struct pci_bus *bus)
-{
- struct pci_controller *hose = pci_bus_to_host(bus);
-
- return hose->global_number;
-}
-EXPORT_SYMBOL(pci_domain_nr);
-
/* This routine is meant to be used early during boot, when the
* PCI bus numbers have not yet been assigned, and you need to
* issue PCI config cycles to an OF device.
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index a648338..fe605b5 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -20,7 +20,6 @@

void __iomem *pci_iomap(struct pci_dev *, int, unsigned long);
void pci_iounmap(struct pci_dev *, void __iomem *);
-int pci_domain_nr(struct pci_bus *);
int pci_proc_domain(struct pci_bus *);

#define ZPCI_BUS_NR 0 /* default bus number */
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index b9ac2f5..86acba4 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -101,12 +101,6 @@ static struct zpci_dev *get_zdev_by_bus(struct pci_bus *bus)
return (bus && bus->sysdata) ? (struct zpci_dev *) bus->sysdata : NULL;
}

-int pci_domain_nr(struct pci_bus *bus)
-{
- return ((struct zpci_dev *) bus->sysdata)->domain;
-}
-EXPORT_SYMBOL_GPL(pci_domain_nr);
-
int pci_proc_domain(struct pci_bus *bus)
{
return pci_domain_nr(bus);
diff --git a/arch/sh/include/asm/pci.h b/arch/sh/include/asm/pci.h
index e343dbd..9d44611 100644
--- a/arch/sh/include/asm/pci.h
+++ b/arch/sh/include/asm/pci.h
@@ -91,8 +91,6 @@ extern void pcibios_set_master(struct pci_dev *dev);
/* Board-specific fixup routines. */
int pcibios_map_platform_irq(const struct pci_dev *dev, u8 slot, u8 pin);

-#define pci_domain_nr(bus) ((struct pci_channel *)(bus)->sysdata)->index
-
static inline int pci_proc_domain(struct pci_bus *bus)
{
struct pci_channel *hose = bus->sysdata;
diff --git a/arch/sparc/include/asm/pci_64.h b/arch/sparc/include/asm/pci_64.h
index 022d160..229b4f6 100644
--- a/arch/sparc/include/asm/pci_64.h
+++ b/arch/sparc/include/asm/pci_64.h
@@ -33,7 +33,6 @@

/* Return the index of the PCI controller for device PDEV. */

-int pci_domain_nr(struct pci_bus *bus);
static inline int pci_proc_domain(struct pci_bus *bus)
{
return 1;
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index 1e957de..79c6941 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -886,23 +886,6 @@ int pcibus_to_node(struct pci_bus *pbus)
EXPORT_SYMBOL(pcibus_to_node);
#endif

-/* Return the domain number for this pci bus */
-
-int pci_domain_nr(struct pci_bus *pbus)
-{
- struct pci_pbm_info *pbm = pbus->sysdata;
- int ret;
-
- if (!pbm) {
- ret = -ENXIO;
- } else {
- ret = pbm->index;
- }
-
- return ret;
-}
-EXPORT_SYMBOL(pci_domain_nr);
-
#ifdef CONFIG_PCI_MSI
int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
{
diff --git a/arch/tile/include/asm/pci.h b/arch/tile/include/asm/pci.h
index dfedd7a..23a726e 100644
--- a/arch/tile/include/asm/pci.h
+++ b/arch/tile/include/asm/pci.h
@@ -199,8 +199,6 @@ int __init pcibios_init(void);

void pcibios_fixup_bus(struct pci_bus *bus);

-#define pci_domain_nr(bus) (((struct pci_controller *)(bus)->sysdata)->index)
-
/*
* This decides whether to display the domain number in /proc.
*/
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index 4625943..1ff7869 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -29,12 +29,6 @@ extern int noioapicreroute;
#ifdef CONFIG_PCI

#ifdef CONFIG_PCI_DOMAINS
-static inline int pci_domain_nr(struct pci_bus *bus)
-{
- struct pci_sysdata *sd = bus->sysdata;
- return sd->domain;
-}
-
static inline int pci_proc_domain(struct pci_bus *bus)
{
return pci_domain_nr(bus);
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 79d01e4..0074420 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -4476,6 +4476,14 @@ static void pci_no_domains(void)
}

#ifdef CONFIG_PCI_DOMAINS
+int pci_domain_nr(struct pci_bus *bus)
+{
+ struct pci_host_bridge *host = pci_find_host_bridge(bus);
+
+ return host->domain;
+}
+EXPORT_SYMBOL(pci_domain_nr);
+
#ifdef CONFIG_PCI_DOMAINS_GENERIC
static atomic_t __domain_nr = ATOMIC_INIT(-1);

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 4524592..6b4789c 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1319,6 +1319,7 @@ void pci_cfg_access_unlock(struct pci_dev *dev);
*/
#ifdef CONFIG_PCI_DOMAINS
extern int pci_domains_supported;
+int pci_domain_nr(struct pci_bus *bus);
#else
enum { pci_domains_supported = 0 };
static inline int pci_domain_nr(struct pci_bus *bus) { return 0; }
@@ -1330,12 +1331,6 @@ static inline int pci_proc_domain(struct pci_bus *bus) { return 0; }
* architecture does not need custom management of PCI
* domains then this implementation will be used
*/
-#ifdef CONFIG_PCI_DOMAINS_GENERIC
-static inline int pci_domain_nr(struct pci_bus *bus)
-{
- return bus->domain_nr;
-}
-#endif

/* some architectures require additional setup to direct VGA traffic */
typedef int (*arch_set_vga_state_t)(struct pci_dev *pdev, bool decode,
--
1.7.1