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PCI: Embed ATS info directly into struct pci_dev

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The pci_ats struct is small and will get smaller, so I don't think it's
worth allocating it separately from the pci_dev struct.

Embed the ATS fields directly into struct pci_dev.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Bjorn Helgaas
2015-07-17 15:15:19 -05:00
parent edc90fee91
commit d544d75ac9
4 changed files with 27 additions and 53 deletions
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8
include/linux/pci.h
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@@ -343,6 +343,7 @@ struct pci_dev {
unsigned int msi_enabled:1;
unsigned int msix_enabled:1;
unsigned int ari_enabled:1; /* ARI forwarding */
unsigned int ats_enabled:1; /* Address Translation Service */
unsigned int is_managed:1;
unsigned int needs_freset:1; /* Dev requires fundamental reset */
unsigned int state_saved:1;
@@ -375,7 +376,10 @@ struct pci_dev {
struct pci_sriov *sriov; /* SR-IOV capability related */
struct pci_dev *physfn; /* the PF this VF is associated with */
};
struct pci_ats *ats; /* Address Translation Service */
int ats_cap; /* ATS Capability offset */
int ats_stu; /* ATS Smallest Translation Unit */
int ats_qdep; /* ATS Invalidate Queue Depth */
atomic_t ats_ref_cnt; /* number of VFs with ATS enabled */
#endif
phys_addr_t rom; /* Physical address of ROM if it's not from the BAR */
size_t romlen; /* Length of ROM if it's not from the BAR */
@@ -1297,10 +1301,8 @@ void ht_destroy_irq(unsigned int irq);
#ifdef CONFIG_PCI_ATS
/* Address Translation Service */
void pci_ats_init(struct pci_dev *dev);
void pci_ats_free(struct pci_dev *dev);
#else
static inline void pci_ats_init(struct pci_dev *dev) { }
static inline void pci_ats_free(struct pci_dev *dev) { }
#endif
void pci_cfg_access_lock(struct pci_dev *dev);