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#ifndef _BACKPORT_LINUX_PCI_H
#define _BACKPORT_LINUX_PCI_H
#include_next <linux/pci.h>
#include <linux/version.h>
#ifndef module_pci_driver
/**
* module_pci_driver() - Helper macro for registering a PCI driver
* @__pci_driver: pci_driver struct
*
* Helper macro for PCI drivers which do not do anything special in module
* init/exit. This eliminates a lot of boilerplate. Each module may only
* use this macro once, and calling it replaces module_init() and module_exit()
*/
#define module_pci_driver(__pci_driver) \
module_driver(__pci_driver, pci_register_driver, \
pci_unregister_driver)
#endif
#if LINUX_VERSION_IS_LESS(3,7,0)
#define pcie_capability_read_word LINUX_BACKPORT(pcie_capability_read_word)
int pcie_capability_read_word(struct pci_dev *dev, int pos, u16 *val);
#define pcie_capability_read_dword LINUX_BACKPORT(pcie_capability_read_dword)
int pcie_capability_read_dword(struct pci_dev *dev, int pos, u32 *val);
#define pcie_capability_write_word LINUX_BACKPORT(pcie_capability_write_word)
int pcie_capability_write_word(struct pci_dev *dev, int pos, u16 val);
#define pcie_capability_write_dword LINUX_BACKPORT(pcie_capability_write_dword)
int pcie_capability_write_dword(struct pci_dev *dev, int pos, u32 val);
#define pcie_capability_clear_and_set_word LINUX_BACKPORT(pcie_capability_clear_and_set_word)
int pcie_capability_clear_and_set_word(struct pci_dev *dev, int pos,
u16 clear, u16 set);
#define pcie_capability_clear_and_set_dword LINUX_BACKPORT(pcie_capability_clear_and_set_dword)
int pcie_capability_clear_and_set_dword(struct pci_dev *dev, int pos,
u32 clear, u32 set);
#define pcie_capability_set_word LINUX_BACKPORT(pcie_capability_set_word)
static inline int pcie_capability_set_word(struct pci_dev *dev, int pos,
u16 set)
{
return pcie_capability_clear_and_set_word(dev, pos, 0, set);
}
#define pcie_capability_set_dword LINUX_BACKPORT(pcie_capability_set_dword)
static inline int pcie_capability_set_dword(struct pci_dev *dev, int pos,
u32 set)
{
return pcie_capability_clear_and_set_dword(dev, pos, 0, set);
}
#define pcie_capability_clear_word LINUX_BACKPORT(pcie_capability_clear_word)
static inline int pcie_capability_clear_word(struct pci_dev *dev, int pos,
u16 clear)
{
return pcie_capability_clear_and_set_word(dev, pos, clear, 0);
}
#define pcie_capability_clear_dword LINUX_BACKPORT(pcie_capability_clear_dword)
static inline int pcie_capability_clear_dword(struct pci_dev *dev, int pos,
u32 clear)
{
return pcie_capability_clear_and_set_dword(dev, pos, clear, 0);
}
#endif
#ifndef PCI_DEVICE_SUB
/**
* PCI_DEVICE_SUB - macro used to describe a specific pci device with subsystem
* @vend: the 16 bit PCI Vendor ID
* @dev: the 16 bit PCI Device ID
* @subvend: the 16 bit PCI Subvendor ID
* @subdev: the 16 bit PCI Subdevice ID
*
* This macro is used to create a struct pci_device_id that matches a
* specific device with subsystem information.
*/
#define PCI_DEVICE_SUB(vend, dev, subvend, subdev) \
.vendor = (vend), .device = (dev), \
.subvendor = (subvend), .subdevice = (subdev)
#endif /* PCI_DEVICE_SUB */
#if LINUX_VERSION_IS_LESS(3,2,0)
#define pci_dev_flags LINUX_BACKPORT(pci_dev_flags)
#define PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG LINUX_BACKPORT(PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG)
#define PCI_DEV_FLAGS_NO_D3 LINUX_BACKPORT(PCI_DEV_FLAGS_NO_D3)
#define PCI_DEV_FLAGS_ASSIGNED LINUX_BACKPORT(PCI_DEV_FLAGS_ASSIGNED)
enum pci_dev_flags {
/* INTX_DISABLE in PCI_COMMAND register disables MSI
* generation too.
*/
PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) 1,
/* Device configuration is irrevocably lost if disabled into D3 */
PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2,
/* Provide indication device is assigned by a Virtual Machine Manager */
PCI_DEV_FLAGS_ASSIGNED = (__force pci_dev_flags_t) 4,
};
#endif /* LINUX_VERSION_IS_LESS(3,2,0) */
#if LINUX_VERSION_IS_LESS(3,8,0)
#define pci_sriov_set_totalvfs LINUX_BACKPORT(pci_sriov_set_totalvfs)
int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs);
#endif /* LINUX_VERSION_IS_LESS(3,8,0) */
#if LINUX_VERSION_IS_LESS(3,10,0)
/* Taken from drivers/pci/pci.h */
struct pci_sriov {
int pos; /* capability position */
int nres; /* number of resources */
u32 cap; /* SR-IOV Capabilities */
u16 ctrl; /* SR-IOV Control */
u16 total_VFs; /* total VFs associated with the PF */
u16 initial_VFs; /* initial VFs associated with the PF */
u16 num_VFs; /* number of VFs available */
u16 offset; /* first VF Routing ID offset */
u16 stride; /* following VF stride */
u32 pgsz; /* page size for BAR alignment */
u8 link; /* Function Dependency Link */
u16 driver_max_VFs; /* max num VFs driver supports */
struct pci_dev *dev; /* lowest numbered PF */
struct pci_dev *self; /* this PF */
struct mutex lock; /* lock for VF bus */
struct work_struct mtask; /* VF Migration task */
u8 __iomem *mstate; /* VF Migration State Array */
};
#define pci_vfs_assigned LINUX_BACKPORT(pci_vfs_assigned)
#ifdef CONFIG_PCI_IOV
int pci_vfs_assigned(struct pci_dev *dev);
#else
static inline int pci_vfs_assigned(struct pci_dev *dev)
{
return 0;
}
#endif
#endif /* LINUX_VERSION_IS_LESS(3,10,0) */
#if LINUX_VERSION_IS_LESS(3,14,0)
#define pci_enable_msi_range LINUX_BACKPORT(pci_enable_msi_range)
#ifdef CONFIG_PCI_MSI
int pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec);
#else
static inline int pci_enable_msi_range(struct pci_dev *dev, int minvec,
int maxvec)
{ return -ENOSYS; }
#endif
#endif
#ifdef CONFIG_PCI
#if LINUX_VERSION_IS_LESS(3,14,0)
#define pci_enable_msix_range LINUX_BACKPORT(pci_enable_msix_range)
#ifdef CONFIG_PCI_MSI
int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries,
int minvec, int maxvec);
#else
static inline int pci_enable_msix_range(struct pci_dev *dev,
struct msix_entry *entries, int minvec, int maxvec)
{ return -ENOSYS; }
#endif
#endif
#endif
#if LINUX_VERSION_IS_LESS(3,13,0)
#define pci_device_is_present LINUX_BACKPORT(pci_device_is_present)
bool pci_device_is_present(struct pci_dev *pdev);
#endif
#ifdef CONFIG_PCI
#if LINUX_VERSION_IS_LESS(3,14,0)
#define pci_enable_msix_exact LINUX_BACKPORT(pci_enable_msix_exact)
#ifdef CONFIG_PCI_MSI
static inline int pci_enable_msix_exact(struct pci_dev *dev,
struct msix_entry *entries, int nvec)
{
int rc = pci_enable_msix_range(dev, entries, nvec, nvec);
if (rc < 0)
return rc;
return 0;
}
#else
static inline int pci_enable_msix_exact(struct pci_dev *dev,
struct msix_entry *entries, int nvec)
{ return -ENOSYS; }
#endif /* CONFIG_PCI_MSI */
#endif
#endif /* CONFIG_PCI */
#endif /* _BACKPORT_LINUX_PCI_H */