drivers/pci/host/pcie-iproc.h

   1 /*
   2  * Copyright (C) 2014-2015 Broadcom Corporation
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation version 2.
   7  *
   8  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
   9  * kind, whether express or implied; without even the implied warranty
  10  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #ifndef _PCIE_IPROC_H
  15 #define _PCIE_IPROC_H
  16
  17 /**
  18  * iProc PCIe interface type
  19  *
  20  * PAXB is the wrapper used in root complex that can be connected to an
  21  * external endpoint device.
  22  *
  23  * PAXC is the wrapper used in root complex dedicated for internal emulated
  24  * endpoint devices.
  25  */
  26 enum iproc_pcie_type {
  27         IPROC_PCIE_PAXB = 0,
  28         IPROC_PCIE_PAXC,
  29 };
  30
  31 /**
  32  * iProc PCIe outbound mapping
  33  * @set_oarr_size: indicates the OARR size bit needs to be set
  34  * @axi_offset: offset from the AXI address to the internal address used by
  35  * the iProc PCIe core
  36  * @window_size: outbound window size
  37  */
  38 struct iproc_pcie_ob {
  39         bool set_oarr_size;
  40         resource_size_t axi_offset;
  41         resource_size_t window_size;
  42 };
  43
  44 struct iproc_msi;
  45
  46 /**
  47  * iProc PCIe device
  48  *
  49  * @dev: pointer to device data structure
  50  * @type: iProc PCIe interface type
  51  * @reg_offsets: register offsets
  52  * @base: PCIe host controller I/O register base
  53  * @base_addr: PCIe host controller register base physical address
  54  * @sysdata: Per PCI controller data (ARM-specific)
  55  * @root_bus: pointer to root bus
  56  * @phy: optional PHY device that controls the Serdes
  57  * @map_irq: function callback to map interrupts
  58  * @need_ob_cfg: indicates SW needs to configure the outbound mapping window
  59  * @ob: outbound mapping parameters
  60  * @msi: MSI data
  61  */
  62 struct iproc_pcie {
  63         struct device *dev;
  64         enum iproc_pcie_type type;
  65         const u16 *reg_offsets;
  66         void __iomem *base;
  67         phys_addr_t base_addr;
  68 #ifdef CONFIG_ARM
  69         struct pci_sys_data sysdata;
  70 #endif
  71         struct pci_bus *root_bus;
  72         struct phy *phy;
  73         int (*map_irq)(const struct pci_dev *, u8, u8);
  74         bool need_ob_cfg;
  75         struct iproc_pcie_ob ob;
  76         struct iproc_msi *msi;
  77 };
  78
  79 int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res);
  80 int iproc_pcie_remove(struct iproc_pcie *pcie);
  81
  82 #ifdef CONFIG_PCIE_IPROC_MSI
  83 int iproc_msi_init(struct iproc_pcie *pcie, struct device_node *node);
  84 void iproc_msi_exit(struct iproc_pcie *pcie);
  85 #else
  86 static inline int iproc_msi_init(struct iproc_pcie *pcie,
  87                                  struct device_node *node)
  88 {
  89         return -ENODEV;
  90 }
  91 static inline void iproc_msi_exit(struct iproc_pcie *pcie)
  92 {
  93 }
  94 #endif
  95
  96 #endif /* _PCIE_IPROC_H */