提交 c3bd517d 编写于 作者: M Milton Miller 提交者: Benjamin Herrenschmidt

powerpc/pci: Move hose_list and pci_address_to_pio to pci-common

move the definition of hose_list next to its hotplug spinlock.

create pcibios_io_size to encapsulate ifdef in existing pci-common
function pcibios_vaddr_is_ioport

move pci_address_to_pio to pci-common, using new pcibios_io_size, and
protect this GPL exported function against concurrent hotplug removal
Signed-off-by: NMilton Miller <miltonm@bga.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
上级 6071ed04
......@@ -38,6 +38,7 @@
#include <asm/eeh.h>
static DEFINE_SPINLOCK(hose_spinlock);
LIST_HEAD(hose_list);
/* XXX kill that some day ... */
static int global_phb_number; /* Global phb counter */
......@@ -113,19 +114,24 @@ void pcibios_free_controller(struct pci_controller *phb)
kfree(phb);
}
static resource_size_t pcibios_io_size(const struct pci_controller *hose)
{
#ifdef CONFIG_PPC64
return hose->pci_io_size;
#else
return hose->io_resource.end - hose->io_resource.start + 1;
#endif
}
int pcibios_vaddr_is_ioport(void __iomem *address)
{
int ret = 0;
struct pci_controller *hose;
unsigned long size;
resource_size_t size;
spin_lock(&hose_spinlock);
list_for_each_entry(hose, &hose_list, list_node) {
#ifdef CONFIG_PPC64
size = hose->pci_io_size;
#else
size = hose->io_resource.end - hose->io_resource.start + 1;
#endif
size = pcibios_io_size(hose);
if (address >= hose->io_base_virt &&
address < (hose->io_base_virt + size)) {
ret = 1;
......@@ -136,6 +142,29 @@ int pcibios_vaddr_is_ioport(void __iomem *address)
return ret;
}
unsigned long pci_address_to_pio(phys_addr_t address)
{
struct pci_controller *hose;
resource_size_t size;
unsigned long ret = ~0;
spin_lock(&hose_spinlock);
list_for_each_entry(hose, &hose_list, list_node) {
size = pcibios_io_size(hose);
if (address >= hose->io_base_phys &&
address < (hose->io_base_phys + size)) {
unsigned long base =
(unsigned long)hose->io_base_virt - _IO_BASE;
ret = base + (address - hose->io_base_phys);
break;
}
}
spin_unlock(&hose_spinlock);
return ret;
}
EXPORT_SYMBOL_GPL(pci_address_to_pio);
/*
* Return the domain number for this bus.
*/
......
......@@ -20,6 +20,7 @@
#include <asm/prom.h>
#include <asm/sections.h>
#include <asm/pci-bridge.h>
#include <asm/ppc-pci.h>
#include <asm/byteorder.h>
#include <asm/uaccess.h>
#include <asm/machdep.h>
......@@ -43,8 +44,6 @@ static u8* pci_to_OF_bus_map;
*/
static int pci_assign_all_buses;
LIST_HEAD(hose_list);
static int pci_bus_count;
/* This will remain NULL for now, until isa-bridge.c is made common
......@@ -491,24 +490,6 @@ long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn)
return result;
}
unsigned long pci_address_to_pio(phys_addr_t address)
{
struct pci_controller *hose, *tmp;
list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
unsigned int size = hose->io_resource.end -
hose->io_resource.start + 1;
if (address >= hose->io_base_phys &&
address < (hose->io_base_phys + size)) {
unsigned long base =
(unsigned long)hose->io_base_virt - _IO_BASE;
return base + (address - hose->io_base_phys);
}
}
return (unsigned int)-1;
}
EXPORT_SYMBOL(pci_address_to_pio);
/*
* Null PCI config access functions, for the case when we can't
* find a hose.
......
......@@ -43,8 +43,6 @@ unsigned long pci_probe_only = 1;
unsigned long pci_io_base = ISA_IO_BASE;
EXPORT_SYMBOL(pci_io_base);
LIST_HEAD(hose_list);
static void fixup_broken_pcnet32(struct pci_dev* dev)
{
if ((dev->class>>8 == PCI_CLASS_NETWORK_ETHERNET)) {
......@@ -524,23 +522,6 @@ int __devinit pcibios_map_io_space(struct pci_bus *bus)
}
EXPORT_SYMBOL_GPL(pcibios_map_io_space);
unsigned long pci_address_to_pio(phys_addr_t address)
{
struct pci_controller *hose, *tmp;
list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
if (address >= hose->io_base_phys &&
address < (hose->io_base_phys + hose->pci_io_size)) {
unsigned long base =
(unsigned long)hose->io_base_virt - _IO_BASE;
return base + (address - hose->io_base_phys);
}
}
return (unsigned int)-1;
}
EXPORT_SYMBOL_GPL(pci_address_to_pio);
#define IOBASE_BRIDGE_NUMBER 0
#define IOBASE_MEMORY 1
#define IOBASE_IO 2
......
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