diff options
Diffstat (limited to 'arch/mips/loongson2ef/common/cs5536/cs5536_ide.c')
| -rw-r--r-- | arch/mips/loongson2ef/common/cs5536/cs5536_ide.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/arch/mips/loongson2ef/common/cs5536/cs5536_ide.c b/arch/mips/loongson2ef/common/cs5536/cs5536_ide.c new file mode 100644 index 000000000000..bb933294b092 --- /dev/null +++ b/arch/mips/loongson2ef/common/cs5536/cs5536_ide.c @@ -0,0 +1,188 @@ +// 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; +} |