diff options
Diffstat (limited to 'arch/mips/loongson64/common/cs5536')
-rw-r--r-- | arch/mips/loongson64/common/cs5536/Makefile | 11 | ||||
-rw-r--r-- | arch/mips/loongson64/common/cs5536/cs5536_acc.c | 140 | ||||
-rw-r--r-- | arch/mips/loongson64/common/cs5536/cs5536_ehci.c | 160 | ||||
-rw-r--r-- | arch/mips/loongson64/common/cs5536/cs5536_ide.c | 192 | ||||
-rw-r--r-- | arch/mips/loongson64/common/cs5536/cs5536_isa.c | 330 | ||||
-rw-r--r-- | arch/mips/loongson64/common/cs5536/cs5536_mfgpt.c | 213 | ||||
-rw-r--r-- | arch/mips/loongson64/common/cs5536/cs5536_ohci.c | 149 | ||||
-rw-r--r-- | arch/mips/loongson64/common/cs5536/cs5536_pci.c | 88 |
8 files changed, 1283 insertions, 0 deletions
diff --git a/arch/mips/loongson64/common/cs5536/Makefile b/arch/mips/loongson64/common/cs5536/Makefile new file mode 100644 index 000000000..f12e64007 --- /dev/null +++ b/arch/mips/loongson64/common/cs5536/Makefile @@ -0,0 +1,11 @@ +# +# Makefile for CS5536 support. +# + +obj-$(CONFIG_CS5536) += cs5536_pci.o cs5536_ide.o cs5536_acc.o cs5536_ohci.o \ + cs5536_isa.o cs5536_ehci.o + +# +# Enable cs5536 mfgpt Timer +# +obj-$(CONFIG_CS5536_MFGPT) += cs5536_mfgpt.o diff --git a/arch/mips/loongson64/common/cs5536/cs5536_acc.c b/arch/mips/loongson64/common/cs5536/cs5536_acc.c new file mode 100644 index 000000000..ab4d6cc57 --- /dev/null +++ b/arch/mips/loongson64/common/cs5536/cs5536_acc.c @@ -0,0 +1,140 @@ +/* + * the ACC 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 + * + * 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. + */ + +#include <cs5536/cs5536.h> +#include <cs5536/cs5536_pci.h> + +void pci_acc_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 << 8); + else + lo &= ~(0x03 << 8); + _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_BAR0_REG: + if (value == PCI_BAR_RANGE_MASK) { + _rdmsr(GLCP_MSR_REG(GLCP_SOFT_COM), &hi, &lo); + lo |= SOFT_BAR_ACC_FLAG; + _wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo); + } else if (value & 0x01) { + value &= 0xfffffffc; + hi = 0xA0000000 | ((value & 0x000ff000) >> 12); + lo = 0x000fff80 | ((value & 0x00000fff) << 20); + _wrmsr(GLIU_MSR_REG(GLIU_IOD_BM1), hi, lo); + } + break; + case PCI_ACC_INT_REG: + _rdmsr(DIVIL_MSR_REG(PIC_YSEL_LOW), &hi, &lo); + /* disable all the usb interrupt in PIC */ + lo &= ~(0xf << PIC_YSEL_LOW_ACC_SHIFT); + if (value) /* enable all the acc interrupt in PIC */ + lo |= (CS5536_ACC_INTR << PIC_YSEL_LOW_ACC_SHIFT); + _wrmsr(DIVIL_MSR_REG(PIC_YSEL_LOW), hi, lo); + break; + default: + break; + } +} + +u32 pci_acc_read_reg(int reg) +{ + u32 hi, lo; + u32 conf_data = 0; + + switch (reg) { + case PCI_VENDOR_ID: + conf_data = + CFG_PCI_VENDOR_ID(CS5536_ACC_DEVICE_ID, CS5536_VENDOR_ID); + break; + case PCI_COMMAND: + _rdmsr(GLIU_MSR_REG(GLIU_IOD_BM1), &hi, &lo); + if (((lo & 0xfff00000) || (hi & 0x000000ff)) + && ((hi & 0xf0000000) == 0xa0000000)) + conf_data |= PCI_COMMAND_IO; + _rdmsr(GLIU_MSR_REG(GLIU_PAE), &hi, &lo); + if ((lo & 0x300) == 0x300) + 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(ACC_MSR_REG(ACC_CAP), &hi, &lo); + conf_data = lo & 0x000000ff; + conf_data |= (CS5536_ACC_CLASS_CODE << 8); + break; + case PCI_CACHE_LINE_SIZE: + conf_data = + CFG_PCI_CACHE_LINE_SIZE(PCI_NORMAL_HEADER_TYPE, + PCI_NORMAL_LATENCY_TIMER); + break; + case PCI_BAR0_REG: + _rdmsr(GLCP_MSR_REG(GLCP_SOFT_COM), &hi, &lo); + if (lo & SOFT_BAR_ACC_FLAG) { + conf_data = CS5536_ACC_RANGE | + PCI_BASE_ADDRESS_SPACE_IO; + lo &= ~SOFT_BAR_ACC_FLAG; + _wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo); + } else { + _rdmsr(GLIU_MSR_REG(GLIU_IOD_BM1), &hi, &lo); + conf_data = (hi & 0x000000ff) << 12; + conf_data |= (lo & 0xfff00000) >> 20; + 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_ACC_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_USB_POINTER; + break; + case PCI_INTERRUPT_LINE: + conf_data = + CFG_PCI_INTERRUPT_LINE(PCI_DEFAULT_PIN, CS5536_ACC_INTR); + break; + default: + break; + } + + return conf_data; +} diff --git a/arch/mips/loongson64/common/cs5536/cs5536_ehci.c b/arch/mips/loongson64/common/cs5536/cs5536_ehci.c new file mode 100644 index 000000000..ec2e36026 --- /dev/null +++ b/arch/mips/loongson64/common/cs5536/cs5536_ehci.c @@ -0,0 +1,160 @@ +/* + * the EHCI 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 + * + * 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. + */ + +#include <cs5536/cs5536.h> +#include <cs5536/cs5536_pci.h> + +void pci_ehci_write_reg(int reg, u32 value) +{ + u32 hi = 0, lo = value; + + switch (reg) { + case PCI_COMMAND: + _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); + if (value & PCI_COMMAND_MASTER) + hi |= PCI_COMMAND_MASTER; + else + hi &= ~PCI_COMMAND_MASTER; + + if (value & PCI_COMMAND_MEMORY) + hi |= PCI_COMMAND_MEMORY; + else + hi &= ~PCI_COMMAND_MEMORY; + _wrmsr(USB_MSR_REG(USB_EHCI), 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_BAR0_REG: + if (value == PCI_BAR_RANGE_MASK) { + _rdmsr(GLCP_MSR_REG(GLCP_SOFT_COM), &hi, &lo); + 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; + hi = 0x40000000 | ((value & 0xff000000) >> 24); + lo = 0x000fffff | ((value & 0x00fff000) << 8); + _wrmsr(GLIU_MSR_REG(GLIU_P2D_BM4), hi, lo); + } + break; + case PCI_EHCI_LEGSMIEN_REG: + _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); + hi &= 0x003f0000; + hi |= (value & 0x3f) << 16; + _wrmsr(USB_MSR_REG(USB_EHCI), hi, lo); + break; + case PCI_EHCI_FLADJ_REG: + _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); + hi &= ~0x00003f00; + hi |= value & 0x00003f00; + _wrmsr(USB_MSR_REG(USB_EHCI), hi, lo); + break; + default: + break; + } +} + +u32 pci_ehci_read_reg(int reg) +{ + u32 conf_data = 0; + u32 hi, lo; + + switch (reg) { + case PCI_VENDOR_ID: + conf_data = + CFG_PCI_VENDOR_ID(CS5536_EHCI_DEVICE_ID, CS5536_VENDOR_ID); + break; + case PCI_COMMAND: + _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); + if (hi & PCI_COMMAND_MASTER) + conf_data |= PCI_COMMAND_MASTER; + if (hi & PCI_COMMAND_MEMORY) + conf_data |= PCI_COMMAND_MEMORY; + 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(USB_MSR_REG(USB_CAP), &hi, &lo); + conf_data = lo & 0x000000ff; + conf_data |= (CS5536_EHCI_CLASS_CODE << 8); + break; + case PCI_CACHE_LINE_SIZE: + conf_data = + CFG_PCI_CACHE_LINE_SIZE(PCI_NORMAL_HEADER_TYPE, + PCI_NORMAL_LATENCY_TIMER); + break; + case PCI_BAR0_REG: + _rdmsr(GLCP_MSR_REG(GLCP_SOFT_COM), &hi, &lo); + if (lo & SOFT_BAR_EHCI_FLAG) { + conf_data = CS5536_EHCI_RANGE | + PCI_BASE_ADDRESS_SPACE_MEMORY; + lo &= ~SOFT_BAR_EHCI_FLAG; + _wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo); + } else { + _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); + conf_data = lo & 0xfffff000; + } + break; + case PCI_CARDBUS_CIS: + conf_data = PCI_CARDBUS_CIS_POINTER; + break; + case PCI_SUBSYSTEM_VENDOR_ID: + conf_data = + CFG_PCI_VENDOR_ID(CS5536_EHCI_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_USB_POINTER; + break; + case PCI_INTERRUPT_LINE: + conf_data = + CFG_PCI_INTERRUPT_LINE(PCI_DEFAULT_PIN, CS5536_USB_INTR); + break; + case PCI_EHCI_LEGSMIEN_REG: + _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); + conf_data = (hi & 0x003f0000) >> 16; + break; + case PCI_EHCI_LEGSMISTS_REG: + _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); + conf_data = (hi & 0x3f000000) >> 24; + break; + case PCI_EHCI_FLADJ_REG: + _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); + conf_data = hi & 0x00003f00; + break; + default: + break; + } + + return conf_data; +} diff --git a/arch/mips/loongson64/common/cs5536/cs5536_ide.c b/arch/mips/loongson64/common/cs5536/cs5536_ide.c new file mode 100644 index 000000000..a73414d9e --- /dev/null +++ b/arch/mips/loongson64/common/cs5536/cs5536_ide.c @@ -0,0 +1,192 @@ +/* + * 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 + * + * 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. + */ + +#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; +} diff --git a/arch/mips/loongson64/common/cs5536/cs5536_isa.c b/arch/mips/loongson64/common/cs5536/cs5536_isa.c new file mode 100644 index 000000000..924be39e7 --- /dev/null +++ b/arch/mips/loongson64/common/cs5536/cs5536_isa.c @@ -0,0 +1,330 @@ +/* + * the ISA 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 + * + * 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. + */ + +#include <linux/pci.h> +#include <cs5536/cs5536.h> +#include <cs5536/cs5536_pci.h> + +/* common variables for PCI_ISA_READ/WRITE_BAR */ +static const u32 divil_msr_reg[6] = { + DIVIL_MSR_REG(DIVIL_LBAR_SMB), DIVIL_MSR_REG(DIVIL_LBAR_GPIO), + DIVIL_MSR_REG(DIVIL_LBAR_MFGPT), DIVIL_MSR_REG(DIVIL_LBAR_IRQ), + DIVIL_MSR_REG(DIVIL_LBAR_PMS), DIVIL_MSR_REG(DIVIL_LBAR_ACPI), +}; + +static const u32 soft_bar_flag[6] = { + SOFT_BAR_SMB_FLAG, SOFT_BAR_GPIO_FLAG, SOFT_BAR_MFGPT_FLAG, + SOFT_BAR_IRQ_FLAG, SOFT_BAR_PMS_FLAG, SOFT_BAR_ACPI_FLAG, +}; + +static const u32 sb_msr_reg[6] = { + SB_MSR_REG(SB_R0), SB_MSR_REG(SB_R1), SB_MSR_REG(SB_R2), + SB_MSR_REG(SB_R3), SB_MSR_REG(SB_R4), SB_MSR_REG(SB_R5), +}; + +static const u32 bar_space_range[6] = { + CS5536_SMB_RANGE, CS5536_GPIO_RANGE, CS5536_MFGPT_RANGE, + CS5536_IRQ_RANGE, CS5536_PMS_RANGE, CS5536_ACPI_RANGE, +}; + +static const int bar_space_len[6] = { + CS5536_SMB_LENGTH, CS5536_GPIO_LENGTH, CS5536_MFGPT_LENGTH, + CS5536_IRQ_LENGTH, CS5536_PMS_LENGTH, CS5536_ACPI_LENGTH, +}; + +/* + * enable the divil module bar space. + * + * For all the DIVIL module LBAR, you should control the DIVIL LBAR reg + * and the RCONFx(0~5) reg to use the modules. + */ +static void divil_lbar_enable(void) +{ + u32 hi, lo; + int offset; + + /* + * The DIVIL IRQ is not used yet. and make the RCONF0 reserved. + */ + + for (offset = DIVIL_LBAR_SMB; offset <= DIVIL_LBAR_PMS; offset++) { + _rdmsr(DIVIL_MSR_REG(offset), &hi, &lo); + hi |= 0x01; + _wrmsr(DIVIL_MSR_REG(offset), hi, lo); + } +} + +/* + * disable the divil module bar space. + */ +static void divil_lbar_disable(void) +{ + u32 hi, lo; + int offset; + + for (offset = DIVIL_LBAR_SMB; offset <= DIVIL_LBAR_PMS; offset++) { + _rdmsr(DIVIL_MSR_REG(offset), &hi, &lo); + hi &= ~0x01; + _wrmsr(DIVIL_MSR_REG(offset), hi, lo); + } +} + +/* + * BAR write: write value to the n BAR + */ + +void pci_isa_write_bar(int n, u32 value) +{ + u32 hi = 0, lo = value; + + if (value == PCI_BAR_RANGE_MASK) { + _rdmsr(GLCP_MSR_REG(GLCP_SOFT_COM), &hi, &lo); + lo |= soft_bar_flag[n]; + _wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo); + } else if (value & 0x01) { + /* NATIVE reg */ + hi = 0x0000f001; + lo &= bar_space_range[n]; + _wrmsr(divil_msr_reg[n], hi, lo); + + /* RCONFx is 4bytes in units for I/O space */ + hi = ((value & 0x000ffffc) << 12) | + ((bar_space_len[n] - 4) << 12) | 0x01; + lo = ((value & 0x000ffffc) << 12) | 0x01; + _wrmsr(sb_msr_reg[n], hi, lo); + } +} + +/* + * BAR read: read the n BAR + */ + +u32 pci_isa_read_bar(int n) +{ + u32 conf_data = 0; + u32 hi, lo; + + _rdmsr(GLCP_MSR_REG(GLCP_SOFT_COM), &hi, &lo); + if (lo & soft_bar_flag[n]) { + conf_data = bar_space_range[n] | PCI_BASE_ADDRESS_SPACE_IO; + lo &= ~soft_bar_flag[n]; + _wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo); + } else { + _rdmsr(divil_msr_reg[n], &hi, &lo); + conf_data = lo & bar_space_range[n]; + conf_data |= 0x01; + conf_data &= ~0x02; + } + return conf_data; +} + +/* + * isa_write: ISA write transfer + * + * We assume that this is not a bus master transfer. + */ +void pci_isa_write_reg(int reg, u32 value) +{ + u32 hi = 0, lo = value; + u32 temp; + + switch (reg) { + case PCI_COMMAND: + if (value & PCI_COMMAND_IO) + divil_lbar_enable(); + else + divil_lbar_disable(); + break; + case PCI_STATUS: + _rdmsr(SB_MSR_REG(SB_ERROR), &hi, &lo); + temp = lo & 0x0000ffff; + if ((value & PCI_STATUS_SIG_TARGET_ABORT) && + (lo & SB_TAS_ERR_EN)) + temp |= SB_TAS_ERR_FLAG; + + if ((value & PCI_STATUS_REC_TARGET_ABORT) && + (lo & SB_TAR_ERR_EN)) + temp |= SB_TAR_ERR_FLAG; + + if ((value & PCI_STATUS_REC_MASTER_ABORT) + && (lo & SB_MAR_ERR_EN)) + temp |= SB_MAR_ERR_FLAG; + + if ((value & PCI_STATUS_DETECTED_PARITY) + && (lo & SB_PARE_ERR_EN)) + temp |= SB_PARE_ERR_FLAG; + + lo = temp; + _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_BAR0_REG: + pci_isa_write_bar(0, value); + break; + case PCI_BAR1_REG: + pci_isa_write_bar(1, value); + break; + case PCI_BAR2_REG: + pci_isa_write_bar(2, value); + break; + case PCI_BAR3_REG: + pci_isa_write_bar(3, value); + break; + case PCI_BAR4_REG: + pci_isa_write_bar(4, value); + break; + case PCI_BAR5_REG: + pci_isa_write_bar(5, value); + break; + case PCI_UART1_INT_REG: + _rdmsr(DIVIL_MSR_REG(PIC_YSEL_HIGH), &hi, &lo); + /* disable uart1 interrupt in PIC */ + lo &= ~(0xf << 24); + if (value) /* enable uart1 interrupt in PIC */ + lo |= (CS5536_UART1_INTR << 24); + _wrmsr(DIVIL_MSR_REG(PIC_YSEL_HIGH), hi, lo); + break; + case PCI_UART2_INT_REG: + _rdmsr(DIVIL_MSR_REG(PIC_YSEL_HIGH), &hi, &lo); + /* disable uart2 interrupt in PIC */ + lo &= ~(0xf << 28); + if (value) /* enable uart2 interrupt in PIC */ + lo |= (CS5536_UART2_INTR << 28); + _wrmsr(DIVIL_MSR_REG(PIC_YSEL_HIGH), hi, lo); + break; + case PCI_ISA_FIXUP_REG: + if (value) { + /* enable the TARGET ABORT/MASTER ABORT etc. */ + _rdmsr(SB_MSR_REG(SB_ERROR), &hi, &lo); + lo |= 0x00000063; + _wrmsr(SB_MSR_REG(SB_ERROR), hi, lo); + } + + default: + /* ALL OTHER PCI CONFIG SPACE HEADER IS NOT IMPLEMENTED. */ + break; + } +} + +/* + * isa_read: ISA read transfers + * + * We assume that this is not a bus master transfer. + */ +u32 pci_isa_read_reg(int reg) +{ + u32 conf_data = 0; + u32 hi, lo; + + switch (reg) { + case PCI_VENDOR_ID: + conf_data = + CFG_PCI_VENDOR_ID(CS5536_ISA_DEVICE_ID, CS5536_VENDOR_ID); + break; + case PCI_COMMAND: + /* we just check the first LBAR for the IO enable bit, */ + /* maybe we should changed later. */ + _rdmsr(DIVIL_MSR_REG(DIVIL_LBAR_SMB), &hi, &lo); + if (hi & 0x01) + conf_data |= PCI_COMMAND_IO; + break; + case PCI_STATUS: + conf_data |= PCI_STATUS_66MHZ; + conf_data |= PCI_STATUS_DEVSEL_MEDIUM; + conf_data |= PCI_STATUS_FAST_BACK; + + _rdmsr(SB_MSR_REG(SB_ERROR), &hi, &lo); + if (lo & SB_TAS_ERR_FLAG) + conf_data |= PCI_STATUS_SIG_TARGET_ABORT; + if (lo & SB_TAR_ERR_FLAG) + conf_data |= PCI_STATUS_REC_TARGET_ABORT; + if (lo & SB_MAR_ERR_FLAG) + conf_data |= PCI_STATUS_REC_MASTER_ABORT; + if (lo & SB_PARE_ERR_FLAG) + conf_data |= PCI_STATUS_DETECTED_PARITY; + break; + case PCI_CLASS_REVISION: + _rdmsr(GLCP_MSR_REG(GLCP_CHIP_REV_ID), &hi, &lo); + conf_data = lo & 0x000000ff; + conf_data |= (CS5536_ISA_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_BRIDGE_HEADER_TYPE, hi); + break; + /* + * we only use the LBAR of DIVIL, no RCONF used. + * all of them are IO space. + */ + case PCI_BAR0_REG: + return pci_isa_read_bar(0); + break; + case PCI_BAR1_REG: + return pci_isa_read_bar(1); + break; + case PCI_BAR2_REG: + return pci_isa_read_bar(2); + break; + case PCI_BAR3_REG: + break; + case PCI_BAR4_REG: + return pci_isa_read_bar(4); + break; + case PCI_BAR5_REG: + return pci_isa_read_bar(5); + break; + case PCI_CARDBUS_CIS: + conf_data = PCI_CARDBUS_CIS_POINTER; + break; + case PCI_SUBSYSTEM_VENDOR_ID: + conf_data = + CFG_PCI_VENDOR_ID(CS5536_ISA_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: + /* no interrupt used here */ + conf_data = CFG_PCI_INTERRUPT_LINE(0x00, 0x00); + break; + default: + break; + } + + return conf_data; +} + +/* + * The mfgpt timer interrupt is running early, so we must keep the south bridge + * mmio always enabled. Otherwise we may race with the PCI configuration which + * may temporarily disable it. When that happens and the timer interrupt fires, + * we are not able to clear it and the system will hang. + */ +static void cs5536_isa_mmio_always_on(struct pci_dev *dev) +{ + dev->mmio_always_on = 1; +} +DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, + PCI_CLASS_BRIDGE_ISA, 8, cs5536_isa_mmio_always_on); diff --git a/arch/mips/loongson64/common/cs5536/cs5536_mfgpt.c b/arch/mips/loongson64/common/cs5536/cs5536_mfgpt.c new file mode 100644 index 000000000..875037063 --- /dev/null +++ b/arch/mips/loongson64/common/cs5536/cs5536_mfgpt.c @@ -0,0 +1,213 @@ +/* + * CS5536 General timer functions + * + * Copyright (C) 2007 Lemote Inc. & Institute of Computing Technology + * Author: Yanhua, yanh@lemote.com + * + * Copyright (C) 2009 Lemote Inc. + * Author: Wu zhangjin, wuzhangjin@gmail.com + * + * Reference: AMD Geode(TM) CS5536 Companion Device Data Book + * + * 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. + */ + +#include <linux/io.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/jiffies.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/clockchips.h> + +#include <asm/time.h> + +#include <cs5536/cs5536_mfgpt.h> + +static DEFINE_RAW_SPINLOCK(mfgpt_lock); + +static u32 mfgpt_base; + +/* + * Initialize the MFGPT timer. + * + * This is also called after resume to bring the MFGPT into operation again. + */ + +/* disable counter */ +void disable_mfgpt0_counter(void) +{ + outw(inw(MFGPT0_SETUP) & 0x7fff, MFGPT0_SETUP); +} +EXPORT_SYMBOL(disable_mfgpt0_counter); + +/* enable counter, comparator2 to event mode, 14.318MHz clock */ +void enable_mfgpt0_counter(void) +{ + outw(0xe310, MFGPT0_SETUP); +} +EXPORT_SYMBOL(enable_mfgpt0_counter); + +static void init_mfgpt_timer(enum clock_event_mode mode, + struct clock_event_device *evt) +{ + raw_spin_lock(&mfgpt_lock); + + switch (mode) { + case CLOCK_EVT_MODE_PERIODIC: + outw(COMPARE, MFGPT0_CMP2); /* set comparator2 */ + outw(0, MFGPT0_CNT); /* set counter to 0 */ + enable_mfgpt0_counter(); + break; + + case CLOCK_EVT_MODE_SHUTDOWN: + case CLOCK_EVT_MODE_UNUSED: + if (evt->mode == CLOCK_EVT_MODE_PERIODIC || + evt->mode == CLOCK_EVT_MODE_ONESHOT) + disable_mfgpt0_counter(); + break; + + case CLOCK_EVT_MODE_ONESHOT: + /* The oneshot mode have very high deviation, Not use it! */ + break; + + case CLOCK_EVT_MODE_RESUME: + /* Nothing to do here */ + break; + } + raw_spin_unlock(&mfgpt_lock); +} + +static struct clock_event_device mfgpt_clockevent = { + .name = "mfgpt", + .features = CLOCK_EVT_FEAT_PERIODIC, + .set_mode = init_mfgpt_timer, + .irq = CS5536_MFGPT_INTR, +}; + +static irqreturn_t timer_interrupt(int irq, void *dev_id) +{ + u32 basehi; + + /* + * get MFGPT base address + * + * NOTE: do not remove me, it's need for the value of mfgpt_base is + * variable + */ + _rdmsr(DIVIL_MSR_REG(DIVIL_LBAR_MFGPT), &basehi, &mfgpt_base); + + /* ack */ + outw(inw(MFGPT0_SETUP) | 0x4000, MFGPT0_SETUP); + + mfgpt_clockevent.event_handler(&mfgpt_clockevent); + + return IRQ_HANDLED; +} + +static struct irqaction irq5 = { + .handler = timer_interrupt, + .flags = IRQF_NOBALANCING | IRQF_TIMER, + .name = "timer" +}; + +/* + * Initialize the conversion factor and the min/max deltas of the clock event + * structure and register the clock event source with the framework. + */ +void __init setup_mfgpt0_timer(void) +{ + u32 basehi; + struct clock_event_device *cd = &mfgpt_clockevent; + unsigned int cpu = smp_processor_id(); + + cd->cpumask = cpumask_of(cpu); + clockevent_set_clock(cd, MFGPT_TICK_RATE); + cd->max_delta_ns = clockevent_delta2ns(0xffff, cd); + cd->min_delta_ns = clockevent_delta2ns(0xf, cd); + + /* Enable MFGPT0 Comparator 2 Output to the Interrupt Mapper */ + _wrmsr(DIVIL_MSR_REG(MFGPT_IRQ), 0, 0x100); + + /* Enable Interrupt Gate 5 */ + _wrmsr(DIVIL_MSR_REG(PIC_ZSEL_LOW), 0, 0x50000); + + /* get MFGPT base address */ + _rdmsr(DIVIL_MSR_REG(DIVIL_LBAR_MFGPT), &basehi, &mfgpt_base); + + clockevents_register_device(cd); + + setup_irq(CS5536_MFGPT_INTR, &irq5); +} + +/* + * Since the MFGPT overflows every tick, its not very useful + * to just read by itself. So use jiffies to emulate a free + * running counter: + */ +static cycle_t mfgpt_read(struct clocksource *cs) +{ + unsigned long flags; + int count; + u32 jifs; + static int old_count; + static u32 old_jifs; + + raw_spin_lock_irqsave(&mfgpt_lock, flags); + /* + * Although our caller may have the read side of xtime_lock, + * this is now a seqlock, and we are cheating in this routine + * by having side effects on state that we cannot undo if + * there is a collision on the seqlock and our caller has to + * retry. (Namely, old_jifs and old_count.) So we must treat + * jiffies as volatile despite the lock. We read jiffies + * before latching the timer count to guarantee that although + * the jiffies value might be older than the count (that is, + * the counter may underflow between the last point where + * jiffies was incremented and the point where we latch the + * count), it cannot be newer. + */ + jifs = jiffies; + /* read the count */ + count = inw(MFGPT0_CNT); + + /* + * It's possible for count to appear to go the wrong way for this + * reason: + * + * The timer counter underflows, but we haven't handled the resulting + * interrupt and incremented jiffies yet. + * + * Previous attempts to handle these cases intelligently were buggy, so + * we just do the simple thing now. + */ + if (count < old_count && jifs == old_jifs) + count = old_count; + + old_count = count; + old_jifs = jifs; + + raw_spin_unlock_irqrestore(&mfgpt_lock, flags); + + return (cycle_t) (jifs * COMPARE) + count; +} + +static struct clocksource clocksource_mfgpt = { + .name = "mfgpt", + .rating = 120, /* Functional for real use, but not desired */ + .read = mfgpt_read, + .mask = CLOCKSOURCE_MASK(32), +}; + +int __init init_mfgpt_clocksource(void) +{ + if (num_possible_cpus() > 1) /* MFGPT does not scale! */ + return 0; + + return clocksource_register_hz(&clocksource_mfgpt, MFGPT_TICK_RATE); +} + +arch_initcall(init_mfgpt_clocksource); diff --git a/arch/mips/loongson64/common/cs5536/cs5536_ohci.c b/arch/mips/loongson64/common/cs5536/cs5536_ohci.c new file mode 100644 index 000000000..f7c905e50 --- /dev/null +++ b/arch/mips/loongson64/common/cs5536/cs5536_ohci.c @@ -0,0 +1,149 @@ +/* + * the OHCI 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 + * + * 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. + */ + +#include <cs5536/cs5536.h> +#include <cs5536/cs5536_pci.h> + +void pci_ohci_write_reg(int reg, u32 value) +{ + u32 hi = 0, lo = value; + + switch (reg) { + case PCI_COMMAND: + _rdmsr(USB_MSR_REG(USB_OHCI), &hi, &lo); + if (value & PCI_COMMAND_MASTER) + hi |= PCI_COMMAND_MASTER; + else + hi &= ~PCI_COMMAND_MASTER; + + if (value & PCI_COMMAND_MEMORY) + hi |= PCI_COMMAND_MEMORY; + else + hi &= ~PCI_COMMAND_MEMORY; + _wrmsr(USB_MSR_REG(USB_OHCI), 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_BAR0_REG: + if (value == PCI_BAR_RANGE_MASK) { + _rdmsr(GLCP_MSR_REG(GLCP_SOFT_COM), &hi, &lo); + 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; + hi = 0x40000000 | ((value & 0xff000000) >> 24); + lo = 0x000fffff | ((value & 0x00fff000) << 8); + _wrmsr(GLIU_MSR_REG(GLIU_P2D_BM3), hi, lo); + } + break; + case PCI_OHCI_INT_REG: + _rdmsr(DIVIL_MSR_REG(PIC_YSEL_LOW), &hi, &lo); + lo &= ~(0xf << PIC_YSEL_LOW_USB_SHIFT); + if (value) /* enable all the usb interrupt in PIC */ + lo |= (CS5536_USB_INTR << PIC_YSEL_LOW_USB_SHIFT); + _wrmsr(DIVIL_MSR_REG(PIC_YSEL_LOW), hi, lo); + break; + default: + break; + } +} + +u32 pci_ohci_read_reg(int reg) +{ + u32 conf_data = 0; + u32 hi, lo; + + switch (reg) { + case PCI_VENDOR_ID: + conf_data = + CFG_PCI_VENDOR_ID(CS5536_OHCI_DEVICE_ID, CS5536_VENDOR_ID); + break; + case PCI_COMMAND: + _rdmsr(USB_MSR_REG(USB_OHCI), &hi, &lo); + if (hi & PCI_COMMAND_MASTER) + conf_data |= PCI_COMMAND_MASTER; + if (hi & PCI_COMMAND_MEMORY) + conf_data |= PCI_COMMAND_MEMORY; + 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(USB_MSR_REG(USB_CAP), &hi, &lo); + conf_data = lo & 0x000000ff; + conf_data |= (CS5536_OHCI_CLASS_CODE << 8); + break; + case PCI_CACHE_LINE_SIZE: + conf_data = + CFG_PCI_CACHE_LINE_SIZE(PCI_NORMAL_HEADER_TYPE, + PCI_NORMAL_LATENCY_TIMER); + break; + case PCI_BAR0_REG: + _rdmsr(GLCP_MSR_REG(GLCP_SOFT_COM), &hi, &lo); + if (lo & SOFT_BAR_OHCI_FLAG) { + conf_data = CS5536_OHCI_RANGE | + PCI_BASE_ADDRESS_SPACE_MEMORY; + lo &= ~SOFT_BAR_OHCI_FLAG; + _wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo); + } else { + _rdmsr(USB_MSR_REG(USB_OHCI), &hi, &lo); + conf_data = lo & 0xffffff00; + conf_data &= ~0x0000000f; /* 32bit mem */ + } + break; + case PCI_CARDBUS_CIS: + conf_data = PCI_CARDBUS_CIS_POINTER; + break; + case PCI_SUBSYSTEM_VENDOR_ID: + conf_data = + CFG_PCI_VENDOR_ID(CS5536_OHCI_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_USB_POINTER; + break; + case PCI_INTERRUPT_LINE: + conf_data = + CFG_PCI_INTERRUPT_LINE(PCI_DEFAULT_PIN, CS5536_USB_INTR); + break; + case PCI_OHCI_INT_REG: + _rdmsr(DIVIL_MSR_REG(PIC_YSEL_LOW), &hi, &lo); + if ((lo & 0x00000f00) == CS5536_USB_INTR) + conf_data = 1; + break; + default: + break; + } + + return conf_data; +} diff --git a/arch/mips/loongson64/common/cs5536/cs5536_pci.c b/arch/mips/loongson64/common/cs5536/cs5536_pci.c new file mode 100644 index 000000000..b73972320 --- /dev/null +++ b/arch/mips/loongson64/common/cs5536/cs5536_pci.c @@ -0,0 +1,88 @@ +/* + * read/write operation to the PCI config space of CS5536 + * + * Copyright (C) 2007 Lemote, Inc. + * Author : jlliu, liujl@lemote.com + * + * Copyright (C) 2009 Lemote, Inc. + * Author: Wu Zhangjin, wuzhangjin@gmail.com + * + * 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. + * + * the Virtual Support Module(VSM) for virtulizing the PCI + * configure space are defined in cs5536_modulename.c respectively, + * + * after this virtulizing, user can access the PCI configure space + * directly as a normal multi-function PCI device which follows + * the PCI-2.2 spec. + */ + +#include <linux/types.h> +#include <cs5536/cs5536_pci.h> +#include <cs5536/cs5536_vsm.h> + +enum { + CS5536_FUNC_START = -1, + CS5536_ISA_FUNC, + reserved_func, + CS5536_IDE_FUNC, + CS5536_ACC_FUNC, + CS5536_OHCI_FUNC, + CS5536_EHCI_FUNC, + CS5536_FUNC_END, +}; + +static const cs5536_pci_vsm_write vsm_conf_write[] = { + [CS5536_ISA_FUNC] = pci_isa_write_reg, + [reserved_func] = NULL, + [CS5536_IDE_FUNC] = pci_ide_write_reg, + [CS5536_ACC_FUNC] = pci_acc_write_reg, + [CS5536_OHCI_FUNC] = pci_ohci_write_reg, + [CS5536_EHCI_FUNC] = pci_ehci_write_reg, +}; + +static const cs5536_pci_vsm_read vsm_conf_read[] = { + [CS5536_ISA_FUNC] = pci_isa_read_reg, + [reserved_func] = NULL, + [CS5536_IDE_FUNC] = pci_ide_read_reg, + [CS5536_ACC_FUNC] = pci_acc_read_reg, + [CS5536_OHCI_FUNC] = pci_ohci_read_reg, + [CS5536_EHCI_FUNC] = pci_ehci_read_reg, +}; + +/* + * write to PCI config space and transfer it to MSR write. + */ +void cs5536_pci_conf_write4(int function, int reg, u32 value) +{ + if ((function <= CS5536_FUNC_START) || (function >= CS5536_FUNC_END)) + return; + if ((reg < 0) || (reg > 0x100) || ((reg & 0x03) != 0)) + return; + + if (vsm_conf_write[function] != NULL) + vsm_conf_write[function](reg, value); +} + +/* + * read PCI config space and transfer it to MSR access. + */ +u32 cs5536_pci_conf_read4(int function, int reg) +{ + u32 data = 0; + + if ((function <= CS5536_FUNC_START) || (function >= CS5536_FUNC_END)) + return 0; + if ((reg < 0) || ((reg & 0x03) != 0)) + return 0; + if (reg > 0x100) + return 0xffffffff; + + if (vsm_conf_read[function] != NULL) + data = vsm_conf_read[function](reg); + + return data; +} |