diff options
Diffstat (limited to 'drivers/pci/pcie/portdrv.h')
| -rw-r--r-- | drivers/pci/pcie/portdrv.h | 61 |
1 files changed, 60 insertions, 1 deletions
diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h index a854bc569117..d4009e35702c 100644 --- a/drivers/pci/pcie/portdrv.h +++ b/drivers/pci/pcie/portdrv.h @@ -1,7 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* * File: portdrv.h - * Purpose: PCI Express Port Bus Driver's Internal Data Structures + * Purpose: PCI Express Port Bus Driver's Data Structures * * Copyright (C) 2004 Intel * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com) @@ -12,7 +12,66 @@ #include <linux/compiler.h> +/* Service Type */ +#define PCIE_PORT_SERVICE_PME_SHIFT 0 /* Power Management Event */ +#define PCIE_PORT_SERVICE_PME (1 << PCIE_PORT_SERVICE_PME_SHIFT) +#define PCIE_PORT_SERVICE_AER_SHIFT 1 /* Advanced Error Reporting */ +#define PCIE_PORT_SERVICE_AER (1 << PCIE_PORT_SERVICE_AER_SHIFT) +#define PCIE_PORT_SERVICE_HP_SHIFT 2 /* Native Hotplug */ +#define PCIE_PORT_SERVICE_HP (1 << PCIE_PORT_SERVICE_HP_SHIFT) +#define PCIE_PORT_SERVICE_VC_SHIFT 3 /* Virtual Channel */ +#define PCIE_PORT_SERVICE_VC (1 << PCIE_PORT_SERVICE_VC_SHIFT) +#define PCIE_PORT_SERVICE_DPC_SHIFT 4 /* Downstream Port Containment */ +#define PCIE_PORT_SERVICE_DPC (1 << PCIE_PORT_SERVICE_DPC_SHIFT) + #define PCIE_PORT_DEVICE_MAXSERVICES 5 + +/* Port Type */ +#define PCIE_ANY_PORT (~0) + +struct pcie_device { + int irq; /* Service IRQ/MSI/MSI-X Vector */ + struct pci_dev *port; /* Root/Upstream/Downstream Port */ + u32 service; /* Port service this device represents */ + void *priv_data; /* Service Private Data */ + struct device device; /* Generic Device Interface */ +}; +#define to_pcie_device(d) container_of(d, struct pcie_device, device) + +static inline void set_service_data(struct pcie_device *dev, void *data) +{ + dev->priv_data = data; +} + +static inline void *get_service_data(struct pcie_device *dev) +{ + return dev->priv_data; +} + +struct pcie_port_service_driver { + const char *name; + int (*probe) (struct pcie_device *dev); + void (*remove) (struct pcie_device *dev); + int (*suspend) (struct pcie_device *dev); + int (*resume) (struct pcie_device *dev); + + /* Device driver may resume normal operations */ + void (*error_resume)(struct pci_dev *dev); + + /* Link Reset Capability - AER service driver specific */ + pci_ers_result_t (*reset_link) (struct pci_dev *dev); + + int port_type; /* Type of the port this driver can handle */ + u32 service; /* Port service this device represents */ + + struct device_driver driver; +}; +#define to_service_driver(d) \ + container_of(d, struct pcie_port_service_driver, driver) + +int pcie_port_service_register(struct pcie_port_service_driver *new); +void pcie_port_service_unregister(struct pcie_port_service_driver *new); + /* * The PCIe Capability Interrupt Message Number (PCIe r3.1, sec 7.8.2) must * be one of the first 32 MSI-X entries. Per PCI r3.0, sec 6.8.3.1, MSI |