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MIPS: Loongson: CS5536: Add missing RDMSRs for IDE and USB

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Add several missing RDMSRs for IDE and USB are missing to avoid the
agressive modification of the high 32 bits of the MSR.

Without this patch some usb devices may fail after printing "reset ehci
host ....." when reading the partition information.

Signed-off-by: Hu Hongbing <huhb@lemote.com>
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Zhang Le <r0bertz@gentoo.org>
Cc: Hu Hongbing <huhb@lemote.com>
Patchwork: http://patchwork.linux-mips.org/patch/1250/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Wu Zhangjin 2010-05-19 09:12:17 +08:00 committed by Ralf Baechle
parent e1df057df8
commit f18b2f67ea
3 changed files with 17 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/mips/loongson/common/cs5536/cs5536_ehci.c
View File

@ -49,6 +49,8 @@ void pci_ehci_write_reg(int reg, u32 value)
lo |= SOFT_BAR_EHCI_FLAG;
_wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo);
} else if ((value & 0x01) == 0x00) {
_rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo);
lo = value;
_wrmsr(USB_MSR_REG(USB_EHCI), hi, lo);
value &= 0xfffffff0;

14
arch/mips/loongson/common/cs5536/cs5536_ide.c
View File

@ -51,6 +51,7 @@ void pci_ide_write_reg(int reg, u32 value)
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);
@ -65,19 +66,30 @@ void pci_ide_write_reg(int reg, u32 value)
_rdmsr(DIVIL_MSR_REG(DIVIL_BALL_OPTS), &hi, &lo);
lo |= 0x01;
_wrmsr(DIVIL_MSR_REG(DIVIL_BALL_OPTS), hi, lo);
} else
} 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:

2
arch/mips/loongson/common/cs5536/cs5536_ohci.c
View File

@ -49,6 +49,8 @@ void pci_ohci_write_reg(int reg, u32 value)
lo |= SOFT_BAR_OHCI_FLAG;
_wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo);
} else if ((value & 0x01) == 0x00) {
_rdmsr(USB_MSR_REG(USB_OHCI), &hi, &lo);
lo = value;
_wrmsr(USB_MSR_REG(USB_OHCI), hi, lo);
value &= 0xfffffff0;