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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* read/write operation to the PCI config space of CS5536
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*
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* Copyright (C) 2007 Lemote, Inc.
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* Author : jlliu, liujl@lemote.com
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*
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* Copyright (C) 2009 Lemote, Inc.
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* Author: Wu Zhangjin, wuzhangjin@gmail.com
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*
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* the Virtual Support Module(VSM) for virtulizing the PCI
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* configure space are defined in cs5536_modulename.c respectively,
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*
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* after this virtulizing, user can access the PCI configure space
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* directly as a normal multi-function PCI device which follows
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* the PCI-2.2 spec.
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*/
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#include <linux/types.h>
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#include <cs5536/cs5536_pci.h>
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#include <cs5536/cs5536_vsm.h>
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enum {
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CS5536_FUNC_START = -1,
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CS5536_ISA_FUNC,
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reserved_func,
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CS5536_IDE_FUNC,
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CS5536_ACC_FUNC,
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CS5536_OHCI_FUNC,
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CS5536_EHCI_FUNC,
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CS5536_FUNC_END,
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};
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static const cs5536_pci_vsm_write vsm_conf_write[] = {
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[CS5536_ISA_FUNC] = pci_isa_write_reg,
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[reserved_func] = NULL,
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[CS5536_IDE_FUNC] = pci_ide_write_reg,
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[CS5536_ACC_FUNC] = pci_acc_write_reg,
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[CS5536_OHCI_FUNC] = pci_ohci_write_reg,
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[CS5536_EHCI_FUNC] = pci_ehci_write_reg,
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};
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static const cs5536_pci_vsm_read vsm_conf_read[] = {
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[CS5536_ISA_FUNC] = pci_isa_read_reg,
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[reserved_func] = NULL,
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[CS5536_IDE_FUNC] = pci_ide_read_reg,
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[CS5536_ACC_FUNC] = pci_acc_read_reg,
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[CS5536_OHCI_FUNC] = pci_ohci_read_reg,
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[CS5536_EHCI_FUNC] = pci_ehci_read_reg,
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};
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/*
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* write to PCI config space and transfer it to MSR write.
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*/
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void cs5536_pci_conf_write4(int function, int reg, u32 value)
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{
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if ((function <= CS5536_FUNC_START) || (function >= CS5536_FUNC_END))
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return;
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if ((reg < 0) || (reg > 0x100) || ((reg & 0x03) != 0))
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return;
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if (vsm_conf_write[function] != NULL)
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vsm_conf_write[function](reg, value);
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}
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/*
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* read PCI config space and transfer it to MSR access.
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*/
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u32 cs5536_pci_conf_read4(int function, int reg)
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{
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u32 data = 0;
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if ((function <= CS5536_FUNC_START) || (function >= CS5536_FUNC_END))
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return 0;
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if ((reg < 0) || ((reg & 0x03) != 0))
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return 0;
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if (reg > 0x100)
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return 0xffffffff;
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if (vsm_conf_read[function] != NULL)
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data = vsm_conf_read[function](reg);
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return data;
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}
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