diff options
Diffstat (limited to 'include/linux/pci-epf.h')
| -rw-r--r-- | include/linux/pci-epf.h | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/include/linux/pci-epf.h b/include/linux/pci-epf.h index ee6156bcbbd0..2e85504ba2ba 100644 --- a/include/linux/pci-epf.h +++ b/include/linux/pci-epf.h @@ -12,6 +12,7 @@ #include <linux/configfs.h> #include <linux/device.h> #include <linux/mod_devicetable.h> +#include <linux/msi.h> #include <linux/pci.h> struct pci_epf; @@ -38,7 +39,7 @@ enum pci_barno { * @baseclass_code: broadly classifies the type of function the device performs * @cache_line_size: specifies the system cacheline size in units of DWORDs * @subsys_vendor_id: vendor of the add-in card or subsystem - * @subsys_id: id specific to vendor + * @subsys_id: ID specific to vendor * @interrupt_pin: interrupt pin the device (or device function) uses */ struct pci_epf_header { @@ -59,7 +60,7 @@ struct pci_epf_header { * @bind: ops to perform when a EPC device has been bound to EPF device * @unbind: ops to perform when a binding has been lost between a EPC device * and EPF device - * @add_cfs: ops to initialize function specific configfs attributes + * @add_cfs: ops to initialize function-specific configfs attributes */ struct pci_epf_ops { int (*bind)(struct pci_epf *epf); @@ -114,6 +115,8 @@ struct pci_epf_driver { * @phys_addr: physical address that should be mapped to the BAR * @addr: virtual address corresponding to the @phys_addr * @size: the size of the address space present in BAR + * @aligned_size: the size actually allocated to accommodate the iATU alignment + * requirement * @barno: BAR number * @flags: flags that are set for the BAR */ @@ -121,11 +124,22 @@ struct pci_epf_bar { dma_addr_t phys_addr; void *addr; size_t size; + size_t aligned_size; enum pci_barno barno; int flags; }; /** + * struct pci_epf_doorbell_msg - represents doorbell message + * @msg: MSI message + * @virq: IRQ number of this doorbell MSI message + */ +struct pci_epf_doorbell_msg { + struct msi_msg msg; + int virq; +}; + +/** * struct pci_epf - represents the PCI EPF device * @dev: the PCI EPF device * @name: the name of the PCI EPF device @@ -138,7 +152,7 @@ struct pci_epf_bar { * @epc: the EPC device to which this EPF device is bound * @epf_pf: the physical EPF device to which this virtual EPF device is bound * @driver: the EPF driver to which this EPF device is bound - * @id: Pointer to the EPF device ID + * @id: pointer to the EPF device ID * @list: to add pci_epf as a list of PCI endpoint functions to pci_epc * @lock: mutex to protect pci_epf_ops * @sec_epc: the secondary EPC device to which this EPF device is bound @@ -151,7 +165,9 @@ struct pci_epf_bar { * @is_vf: true - virtual function, false - physical function * @vfunction_num_map: bitmap to manage virtual function number * @pci_vepf: list of virtual endpoint functions associated with this function - * @event_ops: Callbacks for capturing the EPC events + * @event_ops: callbacks for capturing the EPC events + * @db_msg: data for MSI from RC side + * @num_db: number of doorbells */ struct pci_epf { struct device dev; @@ -182,14 +198,17 @@ struct pci_epf { unsigned long vfunction_num_map; struct list_head pci_vepf; const struct pci_epc_event_ops *event_ops; + struct pci_epf_doorbell_msg *db_msg; + u16 num_db; }; /** - * struct pci_epf_msix_tbl - represents the MSIX table entry structure - * @msg_addr: Writes to this address will trigger MSIX interrupt in host - * @msg_data: Data that should be written to @msg_addr to trigger MSIX interrupt + * struct pci_epf_msix_tbl - represents the MSI-X table entry structure + * @msg_addr: Writes to this address will trigger MSI-X interrupt in host + * @msg_data: Data that should be written to @msg_addr to trigger MSI-X + * interrupt * @vector_ctrl: Identifies if the function is prohibited from sending a message - * using this MSIX table entry + * using this MSI-X table entry */ struct pci_epf_msix_tbl { u64 msg_addr; @@ -222,6 +241,9 @@ void *pci_epf_alloc_space(struct pci_epf *epf, size_t size, enum pci_barno bar, enum pci_epc_interface_type type); void pci_epf_free_space(struct pci_epf *epf, void *addr, enum pci_barno bar, enum pci_epc_interface_type type); + +int pci_epf_align_inbound_addr(struct pci_epf *epf, enum pci_barno bar, + u64 addr, dma_addr_t *base, size_t *off); int pci_epf_bind(struct pci_epf *epf); void pci_epf_unbind(struct pci_epf *epf); int pci_epf_add_vepf(struct pci_epf *epf_pf, struct pci_epf *epf_vf); |