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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2014-2015 Broadcom Corporation
*/
#ifndef _PCIE_IPROC_H
#define _PCIE_IPROC_H
/**
* enum iproc_pcie_type - iProc PCIe interface type
* @IPROC_PCIE_PAXB_BCMA: BCMA-based host controllers
* @IPROC_PCIE_PAXB: PAXB-based host controllers for
* NS, NSP, Cygnus, NS2, and Pegasus SOCs
* @IPROC_PCIE_PAXB_V2: PAXB-based host controllers for Stingray SoCs
* @IPROC_PCIE_PAXC: PAXC-based host controllers
* @IPROC_PCIE_PAXC_V2: PAXC-based host controllers (second generation)
*
* PAXB is the wrapper used in root complex that can be connected to an
* external endpoint device.
*
* PAXC is the wrapper used in root complex dedicated for internal emulated
* endpoint devices.
*/
enum iproc_pcie_type {
IPROC_PCIE_PAXB_BCMA = 0,
IPROC_PCIE_PAXB,
IPROC_PCIE_PAXB_V2,
IPROC_PCIE_PAXC,
IPROC_PCIE_PAXC_V2,
};
/**
* struct iproc_pcie_ob - iProc PCIe outbound mapping
* @axi_offset: offset from the AXI address to the internal address used by
* the iProc PCIe core
* @nr_windows: total number of supported outbound mapping windows
*/
struct iproc_pcie_ob {
resource_size_t axi_offset;
unsigned int nr_windows;
};
/**
* struct iproc_pcie_ib - iProc PCIe inbound mapping
* @nr_regions: total number of supported inbound mapping regions
*/
struct iproc_pcie_ib {
unsigned int nr_regions;
};
struct iproc_pcie_ob_map;
struct iproc_pcie_ib_map;
struct iproc_msi;
/**
* struct iproc_pcie - iProc PCIe device
* @dev: pointer to device data structure
* @type: iProc PCIe interface type
* @reg_offsets: register offsets
* @base: PCIe host controller I/O register base
* @base_addr: PCIe host controller register base physical address
* @mem: host bridge memory window resource
* @phy: optional PHY device that controls the Serdes
* @map_irq: function callback to map interrupts
* @ep_is_internal: indicates an internal emulated endpoint device is connected
* @iproc_cfg_read: indicates the iProc config read function should be used
* @rej_unconfig_pf: indicates the root complex needs to detect and reject
* enumeration against unconfigured physical functions emulated in the ASIC
* @has_apb_err_disable: indicates the controller can be configured to prevent
* unsupported request from being forwarded as an APB bus error
* @fix_paxc_cap: indicates the controller has corrupted capability list in its
* config space registers and requires SW based fixup
*
* @need_ob_cfg: indicates SW needs to configure the outbound mapping window
* @ob: outbound mapping related parameters
* @ob_map: outbound mapping related parameters specific to the controller
*
* @need_ib_cfg: indicates SW needs to configure the inbound mapping window
* @ib: inbound mapping related parameters
* @ib_map: outbound mapping region related parameters
*
* @need_msi_steer: indicates additional configuration of the iProc PCIe
* controller is required to steer MSI writes to external interrupt controller
* @msi: MSI data
*/
struct iproc_pcie {
struct device *dev;
enum iproc_pcie_type type;
u16 *reg_offsets;
void __iomem *base;
phys_addr_t base_addr;
struct resource mem;
struct phy *phy;
int (*map_irq)(const struct pci_dev *, u8, u8);
bool ep_is_internal;
bool iproc_cfg_read;
bool rej_unconfig_pf;
bool has_apb_err_disable;
bool fix_paxc_cap;
bool need_ob_cfg;
struct iproc_pcie_ob ob;
const struct iproc_pcie_ob_map *ob_map;
bool need_ib_cfg;
struct iproc_pcie_ib ib;
const struct iproc_pcie_ib_map *ib_map;
bool need_msi_steer;
struct iproc_msi *msi;
};
int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res);
int iproc_pcie_remove(struct iproc_pcie *pcie);
int iproc_pcie_shutdown(struct iproc_pcie *pcie);
#ifdef CONFIG_PCIE_IPROC_MSI
int iproc_msi_init(struct iproc_pcie *pcie, struct device_node *node);
void iproc_msi_exit(struct iproc_pcie *pcie);
#else
static inline int iproc_msi_init(struct iproc_pcie *pcie,
struct device_node *node)
{
return -ENODEV;
}
static inline void iproc_msi_exit(struct iproc_pcie *pcie)
{
}
#endif
#endif /* _PCIE_IPROC_H */
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