mirrors/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2025-11-02 09:40:27 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

PCI: host-common: Convert to library for host controller drivers

Browse source 
This common library will be used as a placeholder for helper functions
shared by the host controller drivers. This avoids placing the host
controller drivers specific helpers in drivers/pci/*.c, to avoid enlarging
the kernel image on platforms that do not use host controller drivers at
all (like x86/ACPI platforms).

Suggested-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20250508-pcie-reset-slot-v4-3-7050093e2b50@linaro.org
This commit is contained in:
Manivannan Sadhasivam 2025-05-08 12:40:32 +05:30 committed by Bjorn Helgaas
parent 1a176b25f5
commit d1c696dba1
10 changed files with 33 additions and 12 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

8
drivers/pci/controller/Kconfig
View file

@ -3,6 +3,10 @@
menu "PCI controller drivers"
depends on PCI
config PCI_HOST_COMMON
tristate
select PCI_ECAM
config PCI_AARDVARK
tristate "Aardvark PCIe controller"
depends on (ARCH_MVEBU && ARM64) || COMPILE_TEST
@ -119,10 +123,6 @@ config PCI_FTPCI100
depends on OF
default ARCH_GEMINI
config PCI_HOST_COMMON
tristate
select PCI_ECAM
config PCI_HOST_GENERIC
tristate "Generic PCI host controller"
depends on OF

1
drivers/pci/controller/dwc/pcie-hisi.c
View file

@ -15,6 +15,7 @@
#include <linux/pci-acpi.h>
#include <linux/pci-ecam.h>
#include "../../pci.h"
#include "../pci-host-common.h"
#if defined(CONFIG_PCI_HISI) || (defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS))

6
drivers/pci/controller/pci-host-common.c
View file

@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Generic PCI host driver common code
* Common library for PCI host controller drivers
*
* Copyright (C) 2014 ARM Limited
*
@ -15,6 +15,8 @@
#include <linux/pci-ecam.h>
#include <linux/platform_device.h>
#include "pci-host-common.h"
static void gen_pci_unmap_cfg(void *ptr)
{
pci_ecam_free((struct pci_config_window *)ptr);
@ -94,5 +96,5 @@ void pci_host_common_remove(struct platform_device *pdev)
}
EXPORT_SYMBOL_GPL(pci_host_common_remove);
MODULE_DESCRIPTION("Generic PCI host common driver");
MODULE_DESCRIPTION("Common library for PCI host controller drivers");
MODULE_LICENSE("GPL v2");

16
drivers/pci/controller/pci-host-common.h Normal file
View file

@ -0,0 +1,16 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Common library for PCI host controller drivers
*
* Copyright (C) 2014 ARM Limited
*
* Author: Will Deacon <will.deacon@arm.com>
*/
#ifndef _PCI_HOST_COMMON_H
#define _PCI_HOST_COMMON_H
int pci_host_common_probe(struct platform_device *pdev);
void pci_host_common_remove(struct platform_device *pdev);
#endif

2
drivers/pci/controller/pci-host-generic.c
View file

@ -14,6 +14,8 @@
#include <linux/pci-ecam.h>
#include <linux/platform_device.h>
#include "pci-host-common.h"
static const struct pci_ecam_ops gen_pci_cfg_cam_bus_ops = {
.bus_shift = 16,
.pci_ops = {

2
drivers/pci/controller/pci-thunder-ecam.c
View file

@ -11,6 +11,8 @@
#include <linux/pci-ecam.h>
#include <linux/platform_device.h>
#include "pci-host-common.h"
#if defined(CONFIG_PCI_HOST_THUNDER_ECAM) || (defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS))
static void set_val(u32 v, int where, int size, u32 *val)

1
drivers/pci/controller/pci-thunder-pem.c
View file

@ -14,6 +14,7 @@
#include <linux/platform_device.h>
#include <linux/io-64-nonatomic-lo-hi.h>
#include "../pci.h"
#include "pci-host-common.h"
#if defined(CONFIG_PCI_HOST_THUNDER_PEM) || (defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS))

2
drivers/pci/controller/pcie-apple.c
View file

@ -29,6 +29,8 @@
#include <linux/of_irq.h>
#include <linux/pci-ecam.h>
#include "pci-host-common.h"
#define CORE_RC_PHYIF_CTL 0x00024
#define CORE_RC_PHYIF_CTL_RUN BIT(0)
#define CORE_RC_PHYIF_STAT 0x00028

1
drivers/pci/controller/plda/pcie-microchip-host.c
View file

@ -23,6 +23,7 @@
#include <linux/wordpart.h>
#include "../../pci.h"
#include "../pci-host-common.h"
#include "pcie-plda.h"
#define MC_MAX_NUM_INBOUND_WINDOWS 8

6
include/linux/pci-ecam.h
View file

@ -93,10 +93,4 @@ extern const struct pci_ecam_ops al_pcie_ops; /* Amazon Annapurna Labs PCIe */
extern const struct pci_ecam_ops tegra194_pcie_ops; /* Tegra194 PCIe */
extern const struct pci_ecam_ops loongson_pci_ecam_ops; /* Loongson PCIe */
#endif
#if IS_ENABLED(CONFIG_PCI_HOST_COMMON)
/* for DT-based PCI controllers that support ECAM */
int pci_host_common_probe(struct platform_device *pdev);
void pci_host_common_remove(struct platform_device *pdev);
#endif
#endif