Commit d1c696db authored by Manivannan Sadhasivam's avatar Manivannan Sadhasivam Committed by Bjorn Helgaas
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PCI: host-common: Convert to library for host controller drivers 



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: default avatarLukas Wunner <lukas@wunner.de>
Signed-off-by: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: default avatarKrzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20250508-pcie-reset-slot-v4-3-7050093e2b50@linaro.org
parent 1a176b25

drivers/pci/controller/Kconfig

+4 −4
Original line number Diff line number Diff line
@@ -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

drivers/pci/controller/dwc/pcie-hisi.c

+1 −0
Original line number Diff line number Diff line
@@ -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))

drivers/pci/controller/pci-host-common.c

+4 −2
Original line number Diff line number Diff line 
// 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");

drivers/pci/controller/pci-host-common.h

0 → 100644
+16 −0
Original line number Diff line number Diff line 
/* 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

drivers/pci/controller/pci-host-generic.c

+2 −0
Original line number Diff line number Diff line
@@ -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	= {