Merge branch 'pci/virtualization' (eff81b6f) · Commits · 戴 / test

drivers/pci/iov.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -13,7 +13,6 @@
		#include <linux/export.h>
		#include <linux/string.h>
		#include <linux/delay.h>
		#include <linux/pci-ats.h>
		#include "pci.h"

		#define VIRTFN_ID_LEN 16
		@@ -133,6 +132,8 @@ static void pci_read_vf_config_common(struct pci_dev *virtfn)
		&physfn->sriov->subsystem_vendor);
		pci_read_config_word(virtfn, PCI_SUBSYSTEM_ID,
		&physfn->sriov->subsystem_device);

		physfn->sriov->cfg_size = pci_cfg_space_size(virtfn);
		}

		int pci_iov_add_virtfn(struct pci_dev *dev, int id)

+1 −0

Original line number	Diff line number	Diff line
		@@ -290,6 +290,7 @@ struct pci_sriov {
		u16 driver_max_VFs; /* Max num VFs driver supports */
		struct pci_dev dev; / Lowest numbered PF */
		struct pci_dev self; / This PF */
		u32 cfg_size; /* VF config space size */
		u32 class; /* VF device */
		u8 hdr_type; /* VF header type */
		u16 subsystem_vendor; /* VF subsystem vendor */

+17 −0

Original line number	Diff line number	Diff line
		@@ -1439,12 +1439,29 @@ static int pci_cfg_space_size_ext(struct pci_dev *dev)
		return PCI_CFG_SPACE_EXP_SIZE;
		}

		#ifdef CONFIG_PCI_IOV
		static bool is_vf0(struct pci_dev *dev)
		{
		if (pci_iov_virtfn_devfn(dev->physfn, 0) == dev->devfn &&
		pci_iov_virtfn_bus(dev->physfn, 0) == dev->bus->number)
		return true;

		return false;
		}
		#endif

		int pci_cfg_space_size(struct pci_dev *dev)
		{
		int pos;
		u32 status;
		u16 class;

		#ifdef CONFIG_PCI_IOV
		/* Read cached value for all VFs except for VF0 */
		if (dev->is_virtfn && !is_vf0(dev))
		return dev->physfn->sriov->cfg_size;
		#endif

		if (dev->bus->bus_flags & PCI_BUS_FLAGS_NO_EXTCFG)
		return PCI_CFG_SPACE_SIZE;