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linux/arch/mips/loongson2ef/common/cs5536/cs5536_ide.c
Jiaxun Yang 71e2f4dd5a
MIPS: Fork loongson2ef from loongson64 
As later model of GSx64 family processors including 2-series-soc have
similar design with initial loongson3a while loongson2e/f seems less
identical, we separate loongson2e/f support code out of mach-loongson64
to make our life easier.

This patch contains mostly file moving works.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
[paulburton@kernel.org: Squash in the MAINTAINERS updates]
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: paul.burton@mips.com
2019-11-01 14:30:52 -07:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* the IDE Virtual Support Module of AMD CS5536
*
* Copyright (C) 2007 Lemote, Inc.
* Author : jlliu, liujl@lemote.com
*
* Copyright (C) 2009 Lemote, Inc.
* Author: Wu Zhangjin, wuzhangjin@gmail.com
*/
#include <cs5536/cs5536.h>
#include <cs5536/cs5536_pci.h>
void pci_ide_write_reg(int reg, u32 value)
{
u32 hi = 0, lo = value;
switch (reg) {
case PCI_COMMAND:
_rdmsr(GLIU_MSR_REG(GLIU_PAE), &hi, &lo);
if (value & PCI_COMMAND_MASTER)
lo |= (0x03 << 4);
else
lo &= ~(0x03 << 4);
_wrmsr(GLIU_MSR_REG(GLIU_PAE), hi, lo);
break;
case PCI_STATUS:
if (value & PCI_STATUS_PARITY) {
_rdmsr(SB_MSR_REG(SB_ERROR), &hi, &lo);
if (lo & SB_PARE_ERR_FLAG) {
lo = (lo & 0x0000ffff) | SB_PARE_ERR_FLAG;
_wrmsr(SB_MSR_REG(SB_ERROR), hi, lo);
}
}
break;
case PCI_CACHE_LINE_SIZE:
value &= 0x0000ff00;
_rdmsr(SB_MSR_REG(SB_CTRL), &hi, &lo);
hi &= 0xffffff00;
hi |= (value >> 8);
_wrmsr(SB_MSR_REG(SB_CTRL), hi, lo);
break;
case PCI_BAR4_REG:
if (value == PCI_BAR_RANGE_MASK) {
_rdmsr(GLCP_MSR_REG(GLCP_SOFT_COM), &hi, &lo);
lo |= SOFT_BAR_IDE_FLAG;
_wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo);
} else if (value & 0x01) {
_rdmsr(IDE_MSR_REG(IDE_IO_BAR), &hi, &lo);
lo = (value & 0xfffffff0) | 0x1;
_wrmsr(IDE_MSR_REG(IDE_IO_BAR), hi, lo);
value &= 0xfffffffc;
hi = 0x60000000 | ((value & 0x000ff000) >> 12);
lo = 0x000ffff0 | ((value & 0x00000fff) << 20);
_wrmsr(GLIU_MSR_REG(GLIU_IOD_BM2), hi, lo);
}
break;
case PCI_IDE_CFG_REG:
if (value == CS5536_IDE_FLASH_SIGNATURE) {
_rdmsr(DIVIL_MSR_REG(DIVIL_BALL_OPTS), &hi, &lo);
lo |= 0x01;
_wrmsr(DIVIL_MSR_REG(DIVIL_BALL_OPTS), hi, lo);
} else {
_rdmsr(IDE_MSR_REG(IDE_CFG), &hi, &lo);
lo = value;
_wrmsr(IDE_MSR_REG(IDE_CFG), hi, lo);
}
break;
case PCI_IDE_DTC_REG:
_rdmsr(IDE_MSR_REG(IDE_DTC), &hi, &lo);
lo = value;
_wrmsr(IDE_MSR_REG(IDE_DTC), hi, lo);
break;
case PCI_IDE_CAST_REG:
_rdmsr(IDE_MSR_REG(IDE_CAST), &hi, &lo);
lo = value;
_wrmsr(IDE_MSR_REG(IDE_CAST), hi, lo);
break;
case PCI_IDE_ETC_REG:
_rdmsr(IDE_MSR_REG(IDE_ETC), &hi, &lo);
lo = value;
_wrmsr(IDE_MSR_REG(IDE_ETC), hi, lo);
break;
case PCI_IDE_PM_REG:
_rdmsr(IDE_MSR_REG(IDE_INTERNAL_PM), &hi, &lo);
lo = value;
_wrmsr(IDE_MSR_REG(IDE_INTERNAL_PM), hi, lo);
break;
default:
break;
}
}
u32 pci_ide_read_reg(int reg)
{
u32 conf_data = 0;
u32 hi, lo;
switch (reg) {
case PCI_VENDOR_ID:
conf_data =
CFG_PCI_VENDOR_ID(CS5536_IDE_DEVICE_ID, CS5536_VENDOR_ID);
break;
case PCI_COMMAND:
_rdmsr(IDE_MSR_REG(IDE_IO_BAR), &hi, &lo);
if (lo & 0xfffffff0)
conf_data |= PCI_COMMAND_IO;
_rdmsr(GLIU_MSR_REG(GLIU_PAE), &hi, &lo);
if ((lo & 0x30) == 0x30)
conf_data |= PCI_COMMAND_MASTER;
break;
case PCI_STATUS:
conf_data |= PCI_STATUS_66MHZ;
conf_data |= PCI_STATUS_FAST_BACK;
_rdmsr(SB_MSR_REG(SB_ERROR), &hi, &lo);
if (lo & SB_PARE_ERR_FLAG)
conf_data |= PCI_STATUS_PARITY;
conf_data |= PCI_STATUS_DEVSEL_MEDIUM;
break;
case PCI_CLASS_REVISION:
_rdmsr(IDE_MSR_REG(IDE_CAP), &hi, &lo);
conf_data = lo & 0x000000ff;
conf_data |= (CS5536_IDE_CLASS_CODE << 8);
break;
case PCI_CACHE_LINE_SIZE:
_rdmsr(SB_MSR_REG(SB_CTRL), &hi, &lo);
hi &= 0x000000f8;
conf_data = CFG_PCI_CACHE_LINE_SIZE(PCI_NORMAL_HEADER_TYPE, hi);
break;
case PCI_BAR4_REG:
_rdmsr(GLCP_MSR_REG(GLCP_SOFT_COM), &hi, &lo);
if (lo & SOFT_BAR_IDE_FLAG) {
conf_data = CS5536_IDE_RANGE |
PCI_BASE_ADDRESS_SPACE_IO;
lo &= ~SOFT_BAR_IDE_FLAG;
_wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo);
} else {
_rdmsr(IDE_MSR_REG(IDE_IO_BAR), &hi, &lo);
conf_data = lo & 0xfffffff0;
conf_data |= 0x01;
conf_data &= ~0x02;
}
break;
case PCI_CARDBUS_CIS:
conf_data = PCI_CARDBUS_CIS_POINTER;
break;
case PCI_SUBSYSTEM_VENDOR_ID:
conf_data =
CFG_PCI_VENDOR_ID(CS5536_IDE_SUB_ID, CS5536_SUB_VENDOR_ID);
break;
case PCI_ROM_ADDRESS:
conf_data = PCI_EXPANSION_ROM_BAR;
break;
case PCI_CAPABILITY_LIST:
conf_data = PCI_CAPLIST_POINTER;
break;
case PCI_INTERRUPT_LINE:
conf_data =
CFG_PCI_INTERRUPT_LINE(PCI_DEFAULT_PIN, CS5536_IDE_INTR);
break;
case PCI_IDE_CFG_REG:
_rdmsr(IDE_MSR_REG(IDE_CFG), &hi, &lo);
conf_data = lo;
break;
case PCI_IDE_DTC_REG:
_rdmsr(IDE_MSR_REG(IDE_DTC), &hi, &lo);
conf_data = lo;
break;
case PCI_IDE_CAST_REG:
_rdmsr(IDE_MSR_REG(IDE_CAST), &hi, &lo);
conf_data = lo;
break;
case PCI_IDE_ETC_REG:
_rdmsr(IDE_MSR_REG(IDE_ETC), &hi, &lo);
conf_data = lo;
break;
case PCI_IDE_PM_REG:
_rdmsr(IDE_MSR_REG(IDE_INTERNAL_PM), &hi, &lo);
conf_data = lo;
break;
default:
break;
}
return conf_data;
}
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