include/linux/pcieport_if.h

   1 /*
   2  * File:        pcieport_if.h
   3  * Purpose:     PCI Express Port Bus Driver's IF Data Structure
   4  *
   5  * Copyright (C) 2004 Intel
   6  * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
   7  */
   8
   9 #ifndef _PCIEPORT_IF_H_
  10 #define _PCIEPORT_IF_H_
  11
  12 /* Port Type */
  13 #define PCIE_RC_PORT                    4       /* Root port of RC */
  14 #define PCIE_SW_UPSTREAM_PORT           5       /* Upstream port of Switch */
  15 #define PCIE_SW_DOWNSTREAM_PORT         6       /* Downstream port of Switch */
  16 #define PCIE_ANY_PORT                   7
  17
  18 /* Service Type */
  19 #define PCIE_PORT_SERVICE_PME_SHIFT     0       /* Power Management Event */
  20 #define PCIE_PORT_SERVICE_PME           (1 << PCIE_PORT_SERVICE_PME_SHIFT)
  21 #define PCIE_PORT_SERVICE_AER_SHIFT     1       /* Advanced Error Reporting */
  22 #define PCIE_PORT_SERVICE_AER           (1 << PCIE_PORT_SERVICE_AER_SHIFT)
  23 #define PCIE_PORT_SERVICE_HP_SHIFT      2       /* Native Hotplug */
  24 #define PCIE_PORT_SERVICE_HP            (1 << PCIE_PORT_SERVICE_HP_SHIFT)
  25 #define PCIE_PORT_SERVICE_VC_SHIFT      3       /* Virtual Channel */
  26 #define PCIE_PORT_SERVICE_VC            (1 << PCIE_PORT_SERVICE_VC_SHIFT)
  27
  28 /* Root/Upstream/Downstream Port's Interrupt Mode */
  29 #define PCIE_PORT_NO_IRQ                (-1)
  30 #define PCIE_PORT_INTx_MODE             0
  31 #define PCIE_PORT_MSI_MODE              1
  32 #define PCIE_PORT_MSIX_MODE             2
  33
  34 struct pcie_port_data {
  35         int port_type;          /* Type of the port */
  36         int port_irq_mode;      /* [0:INTx | 1:MSI | 2:MSI-X] */
  37 };
  38
  39 struct pcie_device {
  40         int             irq;        /* Service IRQ/MSI/MSI-X Vector */
  41         struct pci_dev *port;       /* Root/Upstream/Downstream Port */
  42         u32             service;    /* Port service this device represents */
  43         void            *priv_data; /* Service Private Data */
  44         struct device   device;     /* Generic Device Interface */
  45 };
  46 #define to_pcie_device(d) container_of(d, struct pcie_device, device)
  47
  48 static inline void set_service_data(struct pcie_device *dev, void *data)
  49 {
  50         dev->priv_data = data;
  51 }
  52
  53 static inline void* get_service_data(struct pcie_device *dev)
  54 {
  55         return dev->priv_data;
  56 }
  57
  58 struct pcie_port_service_driver {
  59         const char *name;
  60         int (*probe) (struct pcie_device *dev);
  61         void (*remove) (struct pcie_device *dev);
  62         int (*suspend) (struct pcie_device *dev);
  63         int (*resume) (struct pcie_device *dev);
  64
  65         /* Service Error Recovery Handler */
  66         struct pci_error_handlers *err_handler;
  67
  68         /* Link Reset Capability - AER service driver specific */
  69         pci_ers_result_t (*reset_link) (struct pci_dev *dev);
  70
  71         int port_type;  /* Type of the port this driver can handle */
  72         u32 service;    /* Port service this device represents */
  73
  74         struct device_driver driver;
  75 };
  76 #define to_service_driver(d) \
  77         container_of(d, struct pcie_port_service_driver, driver)
  78
  79 extern int pcie_port_service_register(struct pcie_port_service_driver *new);
  80 extern void pcie_port_service_unregister(struct pcie_port_service_driver *new);
  81
  82 #endif /* _PCIEPORT_IF_H_ */