projects / mirror_ubuntu-focal-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 22c21003 WZ |
2 | /* |
| 3 | * the EHCI Virtual Support Module of AMD CS5536 | |
| 4 | * | |
| 5 | * Copyright (C) 2007 Lemote, Inc. | |
| 6 | * Author : jlliu, liujl@lemote.com | |
| 7 | * | |
| 8 | * Copyright (C) 2009 Lemote, Inc. | |
| f7a904df | 9 | * Author: Wu Zhangjin, wuzhangjin@gmail.com |
| 22c21003 WZ |
10 | */ |
| 11 | ||
| 12 | #include <cs5536/cs5536.h> | |
| 13 | #include <cs5536/cs5536_pci.h> | |
| 14 | ||
| 15 | void pci_ehci_write_reg(int reg, u32 value) | |
| 16 | { | |
| 17 | u32 hi = 0, lo = value; | |
| 18 | ||
| 19 | switch (reg) { | |
| 20 | case PCI_COMMAND: | |
| 21 | _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); | |
| 22 | if (value & PCI_COMMAND_MASTER) | |
| 23 | hi |= PCI_COMMAND_MASTER; | |
| 24 | else | |
| 25 | hi &= ~PCI_COMMAND_MASTER; | |
| 26 | ||
| 27 | if (value & PCI_COMMAND_MEMORY) | |
| 28 | hi |= PCI_COMMAND_MEMORY; | |
| 29 | else | |
| 30 | hi &= ~PCI_COMMAND_MEMORY; | |
| 31 | _wrmsr(USB_MSR_REG(USB_EHCI), hi, lo); | |
| 32 | break; | |
| 33 | case PCI_STATUS: | |
| 34 | if (value & PCI_STATUS_PARITY) { | |
| 35 | _rdmsr(SB_MSR_REG(SB_ERROR), &hi, &lo); | |
| 36 | if (lo & SB_PARE_ERR_FLAG) { | |
| 37 | lo = (lo & 0x0000ffff) | SB_PARE_ERR_FLAG; | |
| 38 | _wrmsr(SB_MSR_REG(SB_ERROR), hi, lo); | |
| 39 | } | |
| 40 | } | |
| 41 | break; | |
| 42 | case PCI_BAR0_REG: | |
| 43 | if (value == PCI_BAR_RANGE_MASK) { | |
| 44 | _rdmsr(GLCP_MSR_REG(GLCP_SOFT_COM), &hi, &lo); | |
| 45 | lo |= SOFT_BAR_EHCI_FLAG; | |
| 46 | _wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo); | |
| 47 | } else if ((value & 0x01) == 0x00) { | |
| f18b2f67 WZ |
48 | _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); |
| 49 | lo = value; | |
| 22c21003 WZ |
50 | _wrmsr(USB_MSR_REG(USB_EHCI), hi, lo); |
| 51 | ||
| 52 | value &= 0xfffffff0; | |
| 53 | hi = 0x40000000 | ((value & 0xff000000) >> 24); | |
| 54 | lo = 0x000fffff | ((value & 0x00fff000) << 8); | |
| 55 | _wrmsr(GLIU_MSR_REG(GLIU_P2D_BM4), hi, lo); | |
| 56 | } | |
| 57 | break; | |
| 58 | case PCI_EHCI_LEGSMIEN_REG: | |
| 59 | _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); | |
| 60 | hi &= 0x003f0000; | |
| 61 | hi |= (value & 0x3f) << 16; | |
| 62 | _wrmsr(USB_MSR_REG(USB_EHCI), hi, lo); | |
| 63 | break; | |
| 64 | case PCI_EHCI_FLADJ_REG: | |
| 65 | _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); | |
| 66 | hi &= ~0x00003f00; | |
| 67 | hi |= value & 0x00003f00; | |
| 68 | _wrmsr(USB_MSR_REG(USB_EHCI), hi, lo); | |
| 69 | break; | |
| 70 | default: | |
| 71 | break; | |
| 72 | } | |
| 73 | } | |
| 74 | ||
| 75 | u32 pci_ehci_read_reg(int reg) | |
| 76 | { | |
| 77 | u32 conf_data = 0; | |
| 78 | u32 hi, lo; | |
| 79 | ||
| 80 | switch (reg) { | |
| 81 | case PCI_VENDOR_ID: | |
| 82 | conf_data = | |
| 83 | CFG_PCI_VENDOR_ID(CS5536_EHCI_DEVICE_ID, CS5536_VENDOR_ID); | |
| 84 | break; | |
| 85 | case PCI_COMMAND: | |
| 86 | _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); | |
| 87 | if (hi & PCI_COMMAND_MASTER) | |
| 88 | conf_data |= PCI_COMMAND_MASTER; | |
| 89 | if (hi & PCI_COMMAND_MEMORY) | |
| 90 | conf_data |= PCI_COMMAND_MEMORY; | |
| 91 | break; | |
| 92 | case PCI_STATUS: | |
| 93 | conf_data |= PCI_STATUS_66MHZ; | |
| 94 | conf_data |= PCI_STATUS_FAST_BACK; | |
| 95 | _rdmsr(SB_MSR_REG(SB_ERROR), &hi, &lo); | |
| 96 | if (lo & SB_PARE_ERR_FLAG) | |
| 97 | conf_data |= PCI_STATUS_PARITY; | |
| 98 | conf_data |= PCI_STATUS_DEVSEL_MEDIUM; | |
| 99 | break; | |
| 100 | case PCI_CLASS_REVISION: | |
| 101 | _rdmsr(USB_MSR_REG(USB_CAP), &hi, &lo); | |
| 102 | conf_data = lo & 0x000000ff; | |
| 103 | conf_data |= (CS5536_EHCI_CLASS_CODE << 8); | |
| 104 | break; | |
| 105 | case PCI_CACHE_LINE_SIZE: | |
| 106 | conf_data = | |
| 107 | CFG_PCI_CACHE_LINE_SIZE(PCI_NORMAL_HEADER_TYPE, | |
| 108 | PCI_NORMAL_LATENCY_TIMER); | |
| 109 | break; | |
| 110 | case PCI_BAR0_REG: | |
| 111 | _rdmsr(GLCP_MSR_REG(GLCP_SOFT_COM), &hi, &lo); | |
| 112 | if (lo & SOFT_BAR_EHCI_FLAG) { | |
| 113 | conf_data = CS5536_EHCI_RANGE | | |
| 114 | PCI_BASE_ADDRESS_SPACE_MEMORY; | |
| 115 | lo &= ~SOFT_BAR_EHCI_FLAG; | |
| 116 | _wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo); | |
| 117 | } else { | |
| 118 | _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); | |
| 119 | conf_data = lo & 0xfffff000; | |
| 120 | } | |
| 121 | break; | |
| 122 | case PCI_CARDBUS_CIS: | |
| 123 | conf_data = PCI_CARDBUS_CIS_POINTER; | |
| 124 | break; | |
| 125 | case PCI_SUBSYSTEM_VENDOR_ID: | |
| 126 | conf_data = | |
| 127 | CFG_PCI_VENDOR_ID(CS5536_EHCI_SUB_ID, CS5536_SUB_VENDOR_ID); | |
| 128 | break; | |
| 129 | case PCI_ROM_ADDRESS: | |
| 130 | conf_data = PCI_EXPANSION_ROM_BAR; | |
| 131 | break; | |
| 132 | case PCI_CAPABILITY_LIST: | |
| 133 | conf_data = PCI_CAPLIST_USB_POINTER; | |
| 134 | break; | |
| 135 | case PCI_INTERRUPT_LINE: | |
| 136 | conf_data = | |
| 137 | CFG_PCI_INTERRUPT_LINE(PCI_DEFAULT_PIN, CS5536_USB_INTR); | |
| 138 | break; | |
| 139 | case PCI_EHCI_LEGSMIEN_REG: | |
| 140 | _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); | |
| 141 | conf_data = (hi & 0x003f0000) >> 16; | |
| 142 | break; | |
| 143 | case PCI_EHCI_LEGSMISTS_REG: | |
| 144 | _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); | |
| 145 | conf_data = (hi & 0x3f000000) >> 24; | |
| 146 | break; | |
| 147 | case PCI_EHCI_FLADJ_REG: | |
| 148 | _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); | |
| 149 | conf_data = hi & 0x00003f00; | |
| 150 | break; | |
| 151 | default: | |
| 152 | break; | |
| 153 | } | |
| 154 | ||
| 155 | return conf_data; | |
| 156 | } |