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 */ 26enum iproc_pcie_type { 27 IPROC_PCIE_PAXB_BCMA = 0, 28 IPROC_PCIE_PAXB, 29 IPROC_PCIE_PAXB_V2, 30 IPROC_PCIE_PAXC, 31 IPROC_PCIE_PAXC_V2, 32}; 33 34/** 35 * iProc PCIe outbound mapping 36 * @axi_offset: offset from the AXI address to the internal address used by 37 * the iProc PCIe core 38 * @nr_windows: total number of supported outbound mapping windows 39 */ 40struct iproc_pcie_ob { 41 resource_size_t axi_offset; 42 unsigned int nr_windows; 43}; 44 45/** 46 * iProc PCIe inbound mapping 47 * @nr_regions: total number of supported inbound mapping regions 48 */ 49struct iproc_pcie_ib { 50 unsigned int nr_regions; 51}; 52 53struct iproc_pcie_ob_map; 54struct iproc_pcie_ib_map; 55struct iproc_msi; 56 57/** 58 * iProc PCIe device 59 * 60 * @dev: pointer to device data structure 61 * @type: iProc PCIe interface type 62 * @reg_offsets: register offsets 63 * @base: PCIe host controller I/O register base 64 * @base_addr: PCIe host controller register base physical address 65 * @sysdata: Per PCI controller data (ARM-specific) 66 * @root_bus: pointer to root bus 67 * @phy: optional PHY device that controls the Serdes 68 * @map_irq: function callback to map interrupts 69 * @ep_is_internal: indicates an internal emulated endpoint device is connected 70 * @has_apb_err_disable: indicates the controller can be configured to prevent 71 * unsupported request from being forwarded as an APB bus error 72 * 73 * @need_ob_cfg: indicates SW needs to configure the outbound mapping window 74 * @ob: outbound mapping related parameters 75 * @ob_map: outbound mapping related parameters specific to the controller 76 * 77 * @ib: inbound mapping related parameters 78 * @ib_map: outbound mapping region related parameters 79 * 80 * @need_msi_steer: indicates additional configuration of the iProc PCIe 81 * controller is required to steer MSI writes to external interrupt controller 82 * @msi: MSI data 83 */ 84struct iproc_pcie { 85 struct device *dev; 86 enum iproc_pcie_type type; 87 u16 *reg_offsets; 88 void __iomem *base; 89 phys_addr_t base_addr; 90#ifdef CONFIG_ARM 91 struct pci_sys_data sysdata; 92#endif 93 struct resource mem; 94 struct pci_bus *root_bus; 95 struct phy *phy; 96 int (*map_irq)(const struct pci_dev *, u8, u8); 97 bool ep_is_internal; 98 bool has_apb_err_disable; 99 100 bool need_ob_cfg; 101 struct iproc_pcie_ob ob; 102 const struct iproc_pcie_ob_map *ob_map; 103 104 struct iproc_pcie_ib ib; 105 const struct iproc_pcie_ib_map *ib_map; 106 107 bool need_msi_steer; 108 struct iproc_msi *msi; 109}; 110 111int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res); 112int iproc_pcie_remove(struct iproc_pcie *pcie); 113 114#ifdef CONFIG_PCIE_IPROC_MSI 115int iproc_msi_init(struct iproc_pcie *pcie, struct device_node *node); 116void iproc_msi_exit(struct iproc_pcie *pcie); 117#else 118static inline int iproc_msi_init(struct iproc_pcie *pcie, 119 struct device_node *node) 120{ 121 return -ENODEV; 122} 123static inline void iproc_msi_exit(struct iproc_pcie *pcie) 124{ 125} 126#endif 127 128#endif /* _PCIE_IPROC_H */ 129