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 * enum iproc_pcie_type - iProc PCIe interface type 11 * @IPROC_PCIE_PAXB_BCMA: BCMA-based host controllers 12 * @IPROC_PCIE_PAXB: PAXB-based host controllers for 13 * NS, NSP, Cygnus, NS2, and Pegasus SOCs 14 * @IPROC_PCIE_PAXB_V2: PAXB-based host controllers for Stingray SoCs 15 * @IPROC_PCIE_PAXC: PAXC-based host controllers 16 * @IPROC_PCIE_PAXC_V2: PAXC-based host controllers (second generation) 17 * 18 * PAXB is the wrapper used in root complex that can be connected to an 19 * external endpoint device. 20 * 21 * PAXC is the wrapper used in root complex dedicated for internal emulated 22 * endpoint devices. 23 */ 24 enum iproc_pcie_type { 25 IPROC_PCIE_PAXB_BCMA = 0, 26 IPROC_PCIE_PAXB, 27 IPROC_PCIE_PAXB_V2, 28 IPROC_PCIE_PAXC, 29 IPROC_PCIE_PAXC_V2, 30 }; 31 32 /** 33 * struct iproc_pcie_ob - iProc PCIe outbound mapping 34 * @axi_offset: offset from the AXI address to the internal address used by 35 * the iProc PCIe core 36 * @nr_windows: total number of supported outbound mapping windows 37 */ 38 struct iproc_pcie_ob { 39 resource_size_t axi_offset; 40 unsigned int nr_windows; 41 }; 42 43 /** 44 * struct iproc_pcie_ib - iProc PCIe inbound mapping 45 * @nr_regions: total number of supported inbound mapping regions 46 */ 47 struct iproc_pcie_ib { 48 unsigned int nr_regions; 49 }; 50 51 struct iproc_pcie_ob_map; 52 struct iproc_pcie_ib_map; 53 struct iproc_msi; 54 55 /** 56 * struct iproc_pcie - iProc PCIe device 57 * @dev: pointer to device data structure 58 * @type: iProc PCIe interface type 59 * @reg_offsets: register offsets 60 * @base: PCIe host controller I/O register base 61 * @base_addr: PCIe host controller register base physical address 62 * @mem: host bridge memory window resource 63 * @phy: optional PHY device that controls the Serdes 64 * @map_irq: function callback to map interrupts 65 * @ep_is_internal: indicates an internal emulated endpoint device is connected 66 * @iproc_cfg_read: indicates the iProc config read function should be used 67 * @rej_unconfig_pf: indicates the root complex needs to detect and reject 68 * enumeration against unconfigured physical functions emulated in the ASIC 69 * @has_apb_err_disable: indicates the controller can be configured to prevent 70 * unsupported request from being forwarded as an APB bus error 71 * @fix_paxc_cap: indicates the controller has corrupted capability list in its 72 * config space registers and requires SW based fixup 73 * 74 * @need_ob_cfg: indicates SW needs to configure the outbound mapping window 75 * @ob: outbound mapping related parameters 76 * @ob_map: outbound mapping related parameters specific to the controller 77 * 78 * @need_ib_cfg: indicates SW needs to configure the inbound mapping window 79 * @ib: inbound mapping related parameters 80 * @ib_map: outbound mapping region related parameters 81 * 82 * @need_msi_steer: indicates additional configuration of the iProc PCIe 83 * controller is required to steer MSI writes to external interrupt controller 84 * @msi: MSI data 85 */ 86 struct iproc_pcie { 87 struct device *dev; 88 enum iproc_pcie_type type; 89 u16 *reg_offsets; 90 void __iomem *base; 91 phys_addr_t base_addr; 92 struct resource mem; 93 struct phy *phy; 94 int (*map_irq)(const struct pci_dev *, u8, u8); 95 bool ep_is_internal; 96 bool iproc_cfg_read; 97 bool rej_unconfig_pf; 98 bool has_apb_err_disable; 99 bool fix_paxc_cap; 100 101 bool need_ob_cfg; 102 struct iproc_pcie_ob ob; 103 const struct iproc_pcie_ob_map *ob_map; 104 105 bool need_ib_cfg; 106 struct iproc_pcie_ib ib; 107 const struct iproc_pcie_ib_map *ib_map; 108 109 bool need_msi_steer; 110 struct iproc_msi *msi; 111 }; 112 113 int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res); 114 void iproc_pcie_remove(struct iproc_pcie *pcie); 115 int iproc_pcie_shutdown(struct iproc_pcie *pcie); 116 117 #ifdef CONFIG_PCIE_IPROC_MSI 118 int iproc_msi_init(struct iproc_pcie *pcie, struct device_node *node); 119 void iproc_msi_exit(struct iproc_pcie *pcie); 120 #else 121 static inline int iproc_msi_init(struct iproc_pcie *pcie, 122 struct device_node *node) 123 { 124 return -ENODEV; 125 } 126 static inline void iproc_msi_exit(struct iproc_pcie *pcie) 127 { 128 } 129 #endif 130 131 #endif /* _PCIE_IPROC_H */ 132