Commit | Line | Data |
---|---|---|
1032bce3 WZ |
1 | /* |
2 | * Copyright (C) 2008 Lemote Technology | |
3 | * Copyright (C) 2004 ICT CAS | |
4 | * Author: Li xiaoyu, lixy@ict.ac.cn | |
5 | * | |
6 | * Copyright (C) 2007 Lemote, Inc. | |
7 | * Author: Fuxin Zhang, zhangfx@lemote.com | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License as published by the | |
11 | * Free Software Foundation; either version 2 of the License, or (at your | |
12 | * option) any later version. | |
13 | */ | |
14 | #include <linux/init.h> | |
15 | #include <linux/pci.h> | |
16 | ||
17 | #include <loongson.h> | |
18 | #include <cs5536/cs5536.h> | |
19 | #include <cs5536/cs5536_pci.h> | |
20 | ||
21 | /* PCI interrupt pins | |
22 | * | |
23 | * These should not be changed, or you should consider loongson2f interrupt | |
24 | * register and your pci card dispatch | |
25 | */ | |
26 | ||
27 | #define PCIA 4 | |
28 | #define PCIB 5 | |
29 | #define PCIC 6 | |
30 | #define PCID 7 | |
31 | ||
32 | /* all the pci device has the PCIA pin, check the datasheet. */ | |
33 | static char irq_tab[][5] __initdata = { | |
34 | /* INTA INTB INTC INTD */ | |
35 | {0, 0, 0, 0, 0}, /* 11: Unused */ | |
36 | {0, 0, 0, 0, 0}, /* 12: Unused */ | |
37 | {0, 0, 0, 0, 0}, /* 13: Unused */ | |
38 | {0, 0, 0, 0, 0}, /* 14: Unused */ | |
39 | {0, 0, 0, 0, 0}, /* 15: Unused */ | |
40 | {0, 0, 0, 0, 0}, /* 16: Unused */ | |
41 | {0, PCIA, 0, 0, 0}, /* 17: RTL8110-0 */ | |
42 | {0, PCIB, 0, 0, 0}, /* 18: RTL8110-1 */ | |
43 | {0, PCIC, 0, 0, 0}, /* 19: SiI3114 */ | |
44 | {0, PCID, 0, 0, 0}, /* 20: 3-ports nec usb */ | |
45 | {0, PCIA, PCIB, PCIC, PCID}, /* 21: PCI-SLOT */ | |
46 | {0, 0, 0, 0, 0}, /* 22: Unused */ | |
47 | {0, 0, 0, 0, 0}, /* 23: Unused */ | |
48 | {0, 0, 0, 0, 0}, /* 24: Unused */ | |
49 | {0, 0, 0, 0, 0}, /* 25: Unused */ | |
50 | {0, 0, 0, 0, 0}, /* 26: Unused */ | |
51 | {0, 0, 0, 0, 0}, /* 27: Unused */ | |
52 | }; | |
53 | ||
54 | int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) | |
55 | { | |
56 | int virq; | |
57 | ||
58 | if ((PCI_SLOT(dev->devfn) != PCI_IDSEL_CS5536) | |
59 | && (PCI_SLOT(dev->devfn) < 32)) { | |
60 | virq = irq_tab[slot][pin]; | |
61 | printk(KERN_INFO "slot: %d, pin: %d, irq: %d\n", slot, pin, | |
62 | virq + LOONGSON_IRQ_BASE); | |
63 | if (virq != 0) | |
64 | return LOONGSON_IRQ_BASE + virq; | |
65 | else | |
66 | return 0; | |
67 | } else if (PCI_SLOT(dev->devfn) == PCI_IDSEL_CS5536) { /* cs5536 */ | |
68 | switch (PCI_FUNC(dev->devfn)) { | |
69 | case 2: | |
70 | pci_write_config_byte(dev, PCI_INTERRUPT_LINE, | |
71 | CS5536_IDE_INTR); | |
72 | return CS5536_IDE_INTR; /* for IDE */ | |
73 | case 3: | |
74 | pci_write_config_byte(dev, PCI_INTERRUPT_LINE, | |
75 | CS5536_ACC_INTR); | |
76 | return CS5536_ACC_INTR; /* for AUDIO */ | |
77 | case 4: /* for OHCI */ | |
78 | case 5: /* for EHCI */ | |
79 | case 6: /* for UDC */ | |
80 | case 7: /* for OTG */ | |
81 | pci_write_config_byte(dev, PCI_INTERRUPT_LINE, | |
82 | CS5536_USB_INTR); | |
83 | return CS5536_USB_INTR; | |
84 | } | |
85 | return dev->irq; | |
86 | } else { | |
87 | printk(KERN_INFO " strange pci slot number.\n"); | |
88 | return 0; | |
89 | } | |
90 | } | |
91 | ||
92 | /* Do platform specific device initialization at pci_enable_device() time */ | |
93 | int pcibios_plat_dev_init(struct pci_dev *dev) | |
94 | { | |
95 | return 0; | |
96 | } | |
97 | ||
98 | /* CS5536 SPEC. fixup */ | |
85a053fa | 99 | static void __devinit loongson_cs5536_isa_fixup(struct pci_dev *pdev) |
1032bce3 WZ |
100 | { |
101 | /* the uart1 and uart2 interrupt in PIC is enabled as default */ | |
102 | pci_write_config_dword(pdev, PCI_UART1_INT_REG, 1); | |
103 | pci_write_config_dword(pdev, PCI_UART2_INT_REG, 1); | |
104 | } | |
105 | ||
85a053fa | 106 | static void __devinit loongson_cs5536_ide_fixup(struct pci_dev *pdev) |
1032bce3 WZ |
107 | { |
108 | /* setting the mutex pin as IDE function */ | |
109 | pci_write_config_dword(pdev, PCI_IDE_CFG_REG, | |
110 | CS5536_IDE_FLASH_SIGNATURE); | |
111 | } | |
112 | ||
85a053fa | 113 | static void __devinit loongson_cs5536_acc_fixup(struct pci_dev *pdev) |
1032bce3 WZ |
114 | { |
115 | /* enable the AUDIO interrupt in PIC */ | |
116 | pci_write_config_dword(pdev, PCI_ACC_INT_REG, 1); | |
117 | ||
118 | pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xc0); | |
119 | } | |
120 | ||
85a053fa | 121 | static void __devinit loongson_cs5536_ohci_fixup(struct pci_dev *pdev) |
1032bce3 WZ |
122 | { |
123 | /* enable the OHCI interrupt in PIC */ | |
124 | /* THE OHCI, EHCI, UDC, OTG are shared with interrupt in PIC */ | |
125 | pci_write_config_dword(pdev, PCI_OHCI_INT_REG, 1); | |
126 | } | |
127 | ||
85a053fa | 128 | static void __devinit loongson_cs5536_ehci_fixup(struct pci_dev *pdev) |
1032bce3 WZ |
129 | { |
130 | u32 hi, lo; | |
131 | ||
132 | /* Serial short detect enable */ | |
133 | _rdmsr(USB_MSR_REG(USB_CONFIG), &hi, &lo); | |
c70798f1 | 134 | _wrmsr(USB_MSR_REG(USB_CONFIG), (1 << 1) | (1 << 3), lo); |
1032bce3 WZ |
135 | |
136 | /* setting the USB2.0 micro frame length */ | |
137 | pci_write_config_dword(pdev, PCI_EHCI_FLADJ_REG, 0x2000); | |
138 | } | |
139 | ||
85a053fa | 140 | static void __devinit loongson_nec_fixup(struct pci_dev *pdev) |
1032bce3 WZ |
141 | { |
142 | unsigned int val; | |
143 | ||
144 | pci_read_config_dword(pdev, 0xe0, &val); | |
145 | /* Only 2 port be used */ | |
146 | pci_write_config_dword(pdev, 0xe0, (val & ~3) | 0x2); | |
147 | } | |
148 | ||
149 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, | |
150 | loongson_cs5536_isa_fixup); | |
151 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_OHC, | |
152 | loongson_cs5536_ohci_fixup); | |
153 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_EHC, | |
154 | loongson_cs5536_ehci_fixup); | |
155 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_AUDIO, | |
156 | loongson_cs5536_acc_fixup); | |
157 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_IDE, | |
158 | loongson_cs5536_ide_fixup); | |
159 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB, | |
160 | loongson_nec_fixup); |