pcie-al.c | Explore in Territory

// SPDX-License-Identifier: GPL-2.0
/*
 * PCIe host controller driver for Amazon's Annapurna Labs IP (used in chips
 * such as Graviton and Alpine)
 *
 * Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Author: Jonathan Chocron <[email protected]>
 */

#include <linux/pci.h>
#include <linux/pci-ecam.h>
#include <linux/pci-acpi.h>
#include "../../pci.h"

#if defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS)

struct al_pcie_acpi  { … };

static void __iomem *al_pcie_map_bus(struct pci_bus *bus, unsigned int devfn,
				     int where)
{ … }

static int al_pcie_init(struct pci_config_window *cfg)
{ … }

const struct pci_ecam_ops al_pcie_ops = …;

#endif /* defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS) */

#ifdef CONFIG_PCIE_AL

#include <linux/of_pci.h>
#include "pcie-designware.h"

#define AL_PCIE_REV_ID_2 …
#define AL_PCIE_REV_ID_3 …
#define AL_PCIE_REV_ID_4 …

#define AXI_BASE_OFFSET …

#define DEVICE_ID_OFFSET …

#define DEVICE_REV_ID …
#define DEVICE_REV_ID_DEV_ID_MASK …

#define DEVICE_REV_ID_DEV_ID_X4 …
#define DEVICE_REV_ID_DEV_ID_X8 …
#define DEVICE_REV_ID_DEV_ID_X16 …

#define OB_CTRL_REV1_2_OFFSET …
#define OB_CTRL_REV3_5_OFFSET …

#define CFG_TARGET_BUS …
#define CFG_TARGET_BUS_MASK_MASK …
#define CFG_TARGET_BUS_BUSNUM_MASK …

#define CFG_CONTROL …
#define CFG_CONTROL_SUBBUS_MASK …
#define CFG_CONTROL_SEC_BUS_MASK …

struct al_pcie_reg_offsets { … };

struct al_pcie_target_bus_cfg { … };

struct al_pcie { … };

#define to_al_pcie(x) …

static inline u32 al_pcie_controller_readl(struct al_pcie *pcie, u32 offset)
{ … }

static inline void al_pcie_controller_writel(struct al_pcie *pcie, u32 offset,
					     u32 val)
{ … }

static int al_pcie_rev_id_get(struct al_pcie *pcie, unsigned int *rev_id)
{ … }

static int al_pcie_reg_offsets_set(struct al_pcie *pcie)
{ … }

static inline void al_pcie_target_bus_set(struct al_pcie *pcie,
					  u8 target_bus,
					  u8 mask_target_bus)
{ … }

static void __iomem *al_pcie_conf_addr_map_bus(struct pci_bus *bus,
					       unsigned int devfn, int where)
{ … }

static struct pci_ops al_child_pci_ops = …;

static int al_pcie_config_prepare(struct al_pcie *pcie)
{ … }

static int al_pcie_host_init(struct dw_pcie_rp *pp)
{ … }

static const struct dw_pcie_host_ops al_pcie_host_ops = …;

static int al_pcie_probe(struct platform_device *pdev)
{ … }

static const struct of_device_id al_pcie_of_match[] = …;

static struct platform_driver al_pcie_driver = …;
builtin_platform_driver(…) …;

#endif /* CONFIG_PCIE_AL*/
linux/drivers/pci/controller/dwc/pcie-al.c
