cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pcie-iproc.h (4096B)

      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 */
     24enum 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 */
     38struct 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 */
     47struct iproc_pcie_ib {
     48	unsigned int nr_regions;
     49};
     50
     51struct iproc_pcie_ob_map;
     52struct iproc_pcie_ib_map;
     53struct 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 */
     86struct 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
    113int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res);
    114int iproc_pcie_remove(struct iproc_pcie *pcie);
    115int iproc_pcie_shutdown(struct iproc_pcie *pcie);
    116
    117#ifdef CONFIG_PCIE_IPROC_MSI
    118int iproc_msi_init(struct iproc_pcie *pcie, struct device_node *node);
    119void iproc_msi_exit(struct iproc_pcie *pcie);
    120#else
    121static inline int iproc_msi_init(struct iproc_pcie *pcie,
    122				 struct device_node *node)
    123{
    124	return -ENODEV;
    125}
    126static inline void iproc_msi_exit(struct iproc_pcie *pcie)
    127{
    128}
    129#endif
    130
    131#endif /* _PCIE_IPROC_H */