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PCI: initialize and release SR-IOV capability

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If a device has the SR-IOV capability, initialize it (set the ARI
Capable Hierarchy in the lowest numbered PF if necessary; calculate
the System Page Size for the VF MMIO, probe the VF Offset, Stride
and BARs). A lock for the VF bus allocation is also initialized if
a PF is the lowest numbered PF.

Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Yu Zhao 2009-03-20 11:25:11 +08:00 • committed by Jesse Barnes
parent 8293b0f629
commit d1b054da8f
8 changed files with 286 additions and 0 deletions
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11
include/linux/pci.h
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@ -93,6 +93,12 @@ enum {
/* #6: expansion ROM resource */
PCI_ROM_RESOURCE,
/* device specific resources */
#ifdef CONFIG_PCI_IOV
PCI_IOV_RESOURCES,
PCI_IOV_RESOURCE_END = PCI_IOV_RESOURCES + PCI_SRIOV_NUM_BARS - 1,
#endif
/* resources assigned to buses behind the bridge */
#define PCI_BRIDGE_RESOURCE_NUM 4
@ -180,6 +186,7 @@ struct pci_cap_saved_state {
struct pcie_link_state;
struct pci_vpd;
struct pci_sriov;
/*
* The pci_dev structure is used to describe PCI devices.
@ -257,6 +264,7 @@ struct pci_dev {
unsigned int is_managed:1;
unsigned int is_pcie:1;
unsigned int state_saved:1;
unsigned int is_physfn:1;
pci_dev_flags_t dev_flags;
atomic_t enable_cnt; /* pci_enable_device has been called */
@ -270,6 +278,9 @@ struct pci_dev {
struct list_head msi_list;
#endif
struct pci_vpd *vpd;
#ifdef CONFIG_PCI_IOV
struct pci_sriov *sriov; /* SR-IOV capability related */
#endif
};
extern struct pci_dev *alloc_pci_dev(void);