These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / arch / mips / loongson64 / common / cs5536 / cs5536_ehci.c

diff --git a/kernel/arch/mips/loongson64/common/cs5536/cs5536_ehci.c b/kernel/arch/mips/loongson64/common/cs5536/cs5536_ehci.c
new file mode 100644 (file)
index 0000000..ec2e360
--- /dev/null
+++ b/kernel/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;
+}