Initial commit: OpenHarmony-v4.0-ReleaseOpenHarmony-v4.0-Release

1 files changed, 156 insertions, 0 deletions

diff --git a/arch/mips/pci/fixup-lemote2f.c b/arch/mips/pci/fixup-lemote2f.c
new file mode 100644
index 000000000..632ff2daa
--- /dev/null
+++ b/arch/mips/pci/fixup-lemote2f.c
@@ -0,0 +1,156 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2008 Lemote Technology
+ * Copyright (C) 2004 ICT CAS
+ * Author: Li xiaoyu, lixy@ict.ac.cn
+ *
+ * Copyright (C) 2007 Lemote, Inc.
+ * Author: Fuxin Zhang, zhangfx@lemote.com
+ */
+#include <linux/init.h>
+#include <linux/pci.h>
+
+#include <loongson.h>
+#include <cs5536/cs5536.h>
+#include <cs5536/cs5536_pci.h>
+
+/* PCI interrupt pins
+ *
+ * These should not be changed, or you should consider loongson2f interrupt
+ * register and your pci card dispatch
+ */
+
+#define PCIA            4
+#define PCIB            5
+#define PCIC            6
+#define PCID            7
+
+/* all the pci device has the PCIA pin, check the datasheet. */
+static char irq_tab[][5] = {
+        /*      INTA    INTB    INTC    INTD */
+        {0, 0, 0, 0, 0},        /*  11: Unused */
+        {0, 0, 0, 0, 0},        /*  12: Unused */
+        {0, 0, 0, 0, 0},        /*  13: Unused */
+        {0, 0, 0, 0, 0},        /*  14: Unused */
+        {0, 0, 0, 0, 0},        /*  15: Unused */
+        {0, 0, 0, 0, 0},        /*  16: Unused */
+        {0, PCIA, 0, 0, 0},     /*  17: RTL8110-0 */
+        {0, PCIB, 0, 0, 0},     /*  18: RTL8110-1 */
+        {0, PCIC, 0, 0, 0},     /*  19: SiI3114 */
+        {0, PCID, 0, 0, 0},     /*  20: 3-ports nec usb */
+        {0, PCIA, PCIB, PCIC, PCID},    /*  21: PCI-SLOT */
+        {0, 0, 0, 0, 0},        /*  22: Unused */
+        {0, 0, 0, 0, 0},        /*  23: Unused */
+        {0, 0, 0, 0, 0},        /*  24: Unused */
+        {0, 0, 0, 0, 0},        /*  25: Unused */
+        {0, 0, 0, 0, 0},        /*  26: Unused */
+        {0, 0, 0, 0, 0},        /*  27: Unused */
+};
+
+int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+        int virq;
+
+        if ((PCI_SLOT(dev->devfn) != PCI_IDSEL_CS5536)
+            && (PCI_SLOT(dev->devfn) < 32)) {
+                virq = irq_tab[slot][pin];
+                printk(KERN_INFO "slot: %d, pin: %d, irq: %d\n", slot, pin,
+                       virq + LOONGSON_IRQ_BASE);
+                if (virq != 0)
+                        return LOONGSON_IRQ_BASE + virq;
+                else
+                        return 0;
+        } else if (PCI_SLOT(dev->devfn) == PCI_IDSEL_CS5536) {  /*  cs5536 */
+                switch (PCI_FUNC(dev->devfn)) {
+                case 2:
+                        pci_write_config_byte(dev, PCI_INTERRUPT_LINE,
+                                              CS5536_IDE_INTR);
+                        return CS5536_IDE_INTR; /*  for IDE */
+                case 3:
+                        pci_write_config_byte(dev, PCI_INTERRUPT_LINE,
+                                              CS5536_ACC_INTR);
+                        return CS5536_ACC_INTR; /*  for AUDIO */
+                case 4: /*  for OHCI */
+                case 5: /*  for EHCI */
+                case 6: /*  for UDC */
+                case 7: /*  for OTG */
+                        pci_write_config_byte(dev, PCI_INTERRUPT_LINE,
+                                              CS5536_USB_INTR);
+                        return CS5536_USB_INTR;
+                }
+                return dev->irq;
+        } else {
+                printk(KERN_INFO " strange pci slot number.\n");
+                return 0;
+        }
+}
+
+/* Do platform specific device initialization at pci_enable_device() time */
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+        return 0;
+}
+
+/* CS5536 SPEC. fixup */
+static void loongson_cs5536_isa_fixup(struct pci_dev *pdev)
+{
+        /* the uart1 and uart2 interrupt in PIC is enabled as default */
+        pci_write_config_dword(pdev, PCI_UART1_INT_REG, 1);
+        pci_write_config_dword(pdev, PCI_UART2_INT_REG, 1);
+}
+
+static void loongson_cs5536_ide_fixup(struct pci_dev *pdev)
+{
+        /* setting the mutex pin as IDE function */
+        pci_write_config_dword(pdev, PCI_IDE_CFG_REG,
+                               CS5536_IDE_FLASH_SIGNATURE);
+}
+
+static void loongson_cs5536_acc_fixup(struct pci_dev *pdev)
+{
+        /* enable the AUDIO interrupt in PIC  */
+        pci_write_config_dword(pdev, PCI_ACC_INT_REG, 1);
+
+        pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xc0);
+}
+
+static void loongson_cs5536_ohci_fixup(struct pci_dev *pdev)
+{
+        /* enable the OHCI interrupt in PIC */
+        /* THE OHCI, EHCI, UDC, OTG are shared with interrupt in PIC */
+        pci_write_config_dword(pdev, PCI_OHCI_INT_REG, 1);
+}
+
+static void loongson_cs5536_ehci_fixup(struct pci_dev *pdev)
+{
+        u32 hi, lo;
+
+        /* Serial short detect enable */
+        _rdmsr(USB_MSR_REG(USB_CONFIG), &hi, &lo);
+        _wrmsr(USB_MSR_REG(USB_CONFIG), (1 << 1) | (1 << 3), lo);
+
+        /* setting the USB2.0 micro frame length */
+        pci_write_config_dword(pdev, PCI_EHCI_FLADJ_REG, 0x2000);
+}
+
+static void loongson_nec_fixup(struct pci_dev *pdev)
+{
+        unsigned int val;
+
+        pci_read_config_dword(pdev, 0xe0, &val);
+        /* Only 2 port be used */
+        pci_write_config_dword(pdev, 0xe0, (val & ~3) | 0x2);
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA,
+                         loongson_cs5536_isa_fixup);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_OHC,
+                         loongson_cs5536_ohci_fixup);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_EHC,
+                         loongson_cs5536_ehci_fixup);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_AUDIO,
+                         loongson_cs5536_acc_fixup);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_IDE,
+                         loongson_cs5536_ide_fixup);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB,
+                         loongson_nec_fixup);