1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 2014-2015 Broadcom Corporation 4 */ 5 6 #ifndef _PCIE_IPROC_H 7 #define _PCIE_IPROC_H 8 9 /** 10 * iProc PCIe interface type 11 * 12 * PAXB is the wrapper used in root complex that can be connected to an 13 * external endpoint device. 14 * 15 * PAXC is the wrapper used in root complex dedicated for internal emulated 16 * endpoint devices. 17 */ 18 enum iproc_pcie_type { 19 IPROC_PCIE_PAXB_BCMA = 0, 20 IPROC_PCIE_PAXB, 21 IPROC_PCIE_PAXB_V2, 22 IPROC_PCIE_PAXC, 23 IPROC_PCIE_PAXC_V2, 24 }; 25 26 /** 27 * iProc PCIe outbound mapping 28 * @axi_offset: offset from the AXI address to the internal address used by 29 * the iProc PCIe core 30 * @nr_windows: total number of supported outbound mapping windows 31 */ 32 struct iproc_pcie_ob { 33 resource_size_t axi_offset; 34 unsigned int nr_windows; 35 }; 36 37 /** 38 * iProc PCIe inbound mapping 39 * @nr_regions: total number of supported inbound mapping regions 40 */ 41 struct iproc_pcie_ib { 42 unsigned int nr_regions; 43 }; 44 45 struct iproc_pcie_ob_map; 46 struct iproc_pcie_ib_map; 47 struct iproc_msi; 48 49 /** 50 * iProc PCIe device 51 * 52 * @dev: pointer to device data structure 53 * @type: iProc PCIe interface type 54 * @reg_offsets: register offsets 55 * @base: PCIe host controller I/O register base 56 * @base_addr: PCIe host controller register base physical address 57 * @root_bus: pointer to root bus 58 * @phy: optional PHY device that controls the Serdes 59 * @map_irq: function callback to map interrupts 60 * @ep_is_internal: indicates an internal emulated endpoint device is connected 61 * @iproc_cfg_read: indicates the iProc config read function should be used 62 * @rej_unconfig_pf: indicates the root complex needs to detect and reject 63 * enumeration against unconfigured physical functions emulated in the ASIC 64 * @has_apb_err_disable: indicates the controller can be configured to prevent 65 * unsupported request from being forwarded as an APB bus error 66 * @fix_paxc_cap: indicates the controller has corrupted capability list in its 67 * config space registers and requires SW based fixup 68 * 69 * @need_ob_cfg: indicates SW needs to configure the outbound mapping window 70 * @ob: outbound mapping related parameters 71 * @ob_map: outbound mapping related parameters specific to the controller 72 * 73 * @need_ib_cfg: indicates SW needs to configure the inbound mapping window 74 * @ib: inbound mapping related parameters 75 * @ib_map: outbound mapping region related parameters 76 * 77 * @need_msi_steer: indicates additional configuration of the iProc PCIe 78 * controller is required to steer MSI writes to external interrupt controller 79 * @msi: MSI data 80 */ 81 struct iproc_pcie { 82 struct device *dev; 83 enum iproc_pcie_type type; 84 u16 *reg_offsets; 85 void __iomem *base; 86 phys_addr_t base_addr; 87 struct resource mem; 88 struct pci_bus *root_bus; 89 struct phy *phy; 90 int (*map_irq)(const struct pci_dev *, u8, u8); 91 bool ep_is_internal; 92 bool iproc_cfg_read; 93 bool rej_unconfig_pf; 94 bool has_apb_err_disable; 95 bool fix_paxc_cap; 96 97 bool need_ob_cfg; 98 struct iproc_pcie_ob ob; 99 const struct iproc_pcie_ob_map *ob_map; 100 101 bool need_ib_cfg; 102 struct iproc_pcie_ib ib; 103 const struct iproc_pcie_ib_map *ib_map; 104 105 bool need_msi_steer; 106 struct iproc_msi *msi; 107 }; 108 109 int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res); 110 int iproc_pcie_remove(struct iproc_pcie *pcie); 111 int iproc_pcie_shutdown(struct iproc_pcie *pcie); 112 113 #ifdef CONFIG_PCIE_IPROC_MSI 114 int iproc_msi_init(struct iproc_pcie *pcie, struct device_node *node); 115 void iproc_msi_exit(struct iproc_pcie *pcie); 116 #else 117 static inline int iproc_msi_init(struct iproc_pcie *pcie, 118 struct device_node *node) 119 { 120 return -ENODEV; 121 } 122 static inline void iproc_msi_exit(struct iproc_pcie *pcie) 123 { 124 } 125 #endif 126 127 #endif /* _PCIE_IPROC_H */ 128