Files
android_kernel_xiaomi_sm8450/include/linux/pci-ecam.h
Rob Herring 0b104773b4 PCI: Constify struct pci_ecam_ops
struct pci_ecam_ops is typically DT match table data which is defined to
be const. It's also best practice for ops structs to be const. Ideally,
we'd make struct pci_ops const as well, but that becomes pretty
invasive, so for now we just cast it where needed.

Link: https://lore.kernel.org/r/20200409234923.21598-2-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Andrew Murray <amurray@thegoodpenguin.co.uk>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Len Brown <lenb@kernel.org>
Cc: Jonathan Chocron <jonnyc@amazon.com>
Cc: Zhou Wang <wangzhou1@hisilicon.com>
Cc: Robert Richter <rrichter@marvell.com>
Cc: Toan Le <toan@os.amperecomputing.com>
Cc: Marc Gonzalez <marc.w.gonzalez@free.fr>
Cc: Mans Rullgard <mans@mansr.com>
Cc: linux-acpi@vger.kernel.org
2020-05-01 16:28:59 +01:00

69 lines
2.2 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright 2016 Broadcom
*/
#ifndef DRIVERS_PCI_ECAM_H
#define DRIVERS_PCI_ECAM_H
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
/*
* struct to hold pci ops and bus shift of the config window
* for a PCI controller.
*/
struct pci_config_window;
struct pci_ecam_ops {
unsigned int bus_shift;
struct pci_ops pci_ops;
int (*init)(struct pci_config_window *);
};
/*
* struct to hold the mappings of a config space window. This
* is expected to be used as sysdata for PCI controllers that
* use ECAM.
*/
struct pci_config_window {
struct resource res;
struct resource busr;
void *priv;
const struct pci_ecam_ops *ops;
union {
void __iomem *win; /* 64-bit single mapping */
void __iomem **winp; /* 32-bit per-bus mapping */
};
struct device *parent;/* ECAM res was from this dev */
};
/* create and free pci_config_window */
struct pci_config_window *pci_ecam_create(struct device *dev,
struct resource *cfgres, struct resource *busr,
const struct pci_ecam_ops *ops);
void pci_ecam_free(struct pci_config_window *cfg);
/* map_bus when ->sysdata is an instance of pci_config_window */
void __iomem *pci_ecam_map_bus(struct pci_bus *bus, unsigned int devfn,
int where);
/* default ECAM ops */
extern const struct pci_ecam_ops pci_generic_ecam_ops;
#if defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS)
extern const struct pci_ecam_ops pci_32b_ops; /* 32-bit accesses only */
extern const struct pci_ecam_ops hisi_pcie_ops; /* HiSilicon */
extern const struct pci_ecam_ops thunder_pem_ecam_ops; /* Cavium ThunderX 1.x & 2.x */
extern const struct pci_ecam_ops pci_thunder_ecam_ops; /* Cavium ThunderX 1.x */
extern const struct pci_ecam_ops xgene_v1_pcie_ecam_ops; /* APM X-Gene PCIe v1 */
extern const struct pci_ecam_ops xgene_v2_pcie_ecam_ops; /* APM X-Gene PCIe v2.x */
extern const struct pci_ecam_ops al_pcie_ops; /* Amazon Annapurna Labs PCIe */
#endif
#ifdef CONFIG_PCI_HOST_COMMON
/* for DT-based PCI controllers that support ECAM */
int pci_host_common_probe(struct platform_device *pdev,
const struct pci_ecam_ops *ops);
int pci_host_common_remove(struct platform_device *pdev);
#endif
#endif