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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 | /* * 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 * * 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/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] __initdata = { /* 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 __init 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); |