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x86/PCI: MMCONFIG: use a private structure rather than the ACPI MCFG one

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This adds a struct pci_mmcfg_region with a little more information
than the struct acpi_mcfg_allocation used previously.  The acpi_mcfg
structure is defined by the spec, so we can't change it.

To begin with, struct pci_mmcfg_region is basically the same as the
ACPI MCFG version, but future patches will add more information.

Reviewed-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Bjorn Helgaas 2009-11-13 17:34:13 -07:00 committed by Jesse Barnes
parent df5eb1d67e
commit d215a9c8b4
4 changed files with 17 additions and 10 deletions
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9
arch/x86/include/asm/pci_x86.h
View File

@ -118,10 +118,17 @@ extern int __init pcibios_init(void);
/* pci-mmconfig.c */
struct pci_mmcfg_region {
u64 address;
u16 pci_segment;
u8 start_bus_number;
u8 end_bus_number;
};
extern int __init pci_mmcfg_arch_init(void);
extern void __init pci_mmcfg_arch_free(void);
extern struct acpi_mcfg_allocation *pci_mmcfg_config;
extern struct pci_mmcfg_region *pci_mmcfg_config;
extern int pci_mmcfg_config_num;
#define PCI_MMCFG_BUS_OFFSET(bus) ((bus) << 20)

10
arch/x86/pci/mmconfig-shared.c
View File

@ -34,10 +34,10 @@ static __init void free_all_mmcfg(void)
pci_mmcfg_config = NULL;
}
static __init struct acpi_mcfg_allocation *pci_mmconfig_add(int segment,
int start, int end, u64 addr)
static __init struct pci_mmcfg_region *pci_mmconfig_add(int segment, int start,
int end, u64 addr)
{
struct acpi_mcfg_allocation *new;
struct pci_mmcfg_region *new;
int new_num = pci_mmcfg_config_num + 1;
int i = pci_mmcfg_config_num;
@ -349,7 +349,7 @@ static void __init pci_mmcfg_insert_resources(void)
names = (void *)&res[pci_mmcfg_config_num];
for (i = 0; i < pci_mmcfg_config_num; i++, res++) {
struct acpi_mcfg_allocation *cfg = &pci_mmcfg_config[i];
struct pci_mmcfg_region *cfg = &pci_mmcfg_config[i];
num_buses = cfg->end_bus_number - cfg->start_bus_number + 1;
res->name = names;
snprintf(names, PCI_MMCFG_RESOURCE_NAME_LEN,
@ -523,7 +523,7 @@ static void __init pci_mmcfg_reject_broken(int early)
static int __initdata known_bridge;
/* The physical address of the MMCONFIG aperture. Set from ACPI tables. */
struct acpi_mcfg_allocation *pci_mmcfg_config;
struct pci_mmcfg_region *pci_mmcfg_config;
int pci_mmcfg_config_num;
static int __init acpi_mcfg_check_entry(struct acpi_table_mcfg *mcfg,

2
arch/x86/pci/mmconfig_32.c
View File

@ -27,7 +27,7 @@ static int mmcfg_last_accessed_cpu;
*/
static u32 get_base_addr(unsigned int seg, int bus, unsigned devfn)
{
struct acpi_mcfg_allocation *cfg;
struct pci_mmcfg_region *cfg;
int cfg_num;
for (cfg_num = 0; cfg_num < pci_mmcfg_config_num; cfg_num++) {

6
arch/x86/pci/mmconfig_64.c
View File

@ -14,14 +14,14 @@
/* Static virtual mapping of the MMCONFIG aperture */
struct mmcfg_virt {
struct acpi_mcfg_allocation *cfg;
struct pci_mmcfg_region *cfg;
char __iomem *virt;
};
static struct mmcfg_virt *pci_mmcfg_virt;
static char __iomem *get_virt(unsigned int seg, unsigned bus)
{
struct acpi_mcfg_allocation *cfg;
struct pci_mmcfg_region *cfg;
int cfg_num;
for (cfg_num = 0; cfg_num < pci_mmcfg_config_num; cfg_num++) {
@ -109,7 +109,7 @@ static struct pci_raw_ops pci_mmcfg = {
.write = pci_mmcfg_write,
};
static void __iomem * __init mcfg_ioremap(struct acpi_mcfg_allocation *cfg)
static void __iomem * __init mcfg_ioremap(struct pci_mmcfg_region *cfg)
{
void __iomem *addr;
u64 start, size;