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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 54 | pj | 1 | #include <stdlib.h> |
| 2 | #include <linux/pci.h> |
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| 3 | |||
| 4 | #include <asm/types.h> |
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| 5 | #include <asm/io.h> |
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| 6 | |||
| 7 | #include "endianess.h" |
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| 8 | #include "libvga.h" |
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| 9 | #include "svgalib_helper.h" |
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| 10 | #include "interrupt.h" |
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| 11 | |||
| 12 | static struct sh_pci_device graph_dev; |
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| 13 | static struct pci_dev dev; |
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| 14 | |||
| 15 | DWORD __svgalib_pci_read_config_dword(int pos, int address); |
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| 16 | |||
| 17 | int init_vgapci(void) |
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| 18 | { |
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| 19 | int i; |
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| 20 | DWORD result; |
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| 21 | BYTE bus,dv; |
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| 22 | |||
| 23 | printk(KERN_DEBUG "Initializing PCI BUS...\n"); |
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| 24 | |||
| 25 | memset(&graph_dev,0,sizeof(struct pci_dev)); |
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| 26 | |||
| 27 | /* Scan the devices connected to the PCI bus */ |
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| 28 | if (pci_init() == 1) { |
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| 29 | clear(); |
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| 30 | pci_show(); |
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| 31 | } else { |
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| 32 | return -1; |
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| 33 | } |
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| 34 | |||
| 35 | if(pci_present()) { |
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| 36 | |||
| 37 | pci_class(PCI_CLASS_DISPLAY_VGA<<8,0,&bus,&dv); |
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| 38 | |||
| 39 | dev.bus->number = bus; |
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| 40 | dev.devfn = dv; |
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| 41 | memcpy(&(graph_dev.dev),&dev,sizeof(struct pci_dev)); |
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| 42 | |||
| 43 | pci_read_config_word(&dev,0,&(graph_dev.vendor)); |
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| 44 | pci_read_config_word(&dev,2,&(graph_dev.id)); |
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| 45 | pci_read_config_byte(&dev,8,&(graph_dev.revision)); |
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| 46 | printk(KERN_INFO "VGA Vendor:%.4x id:%.4x bus:%d dev:%d\n",\ |
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| 47 | graph_dev.vendor,graph_dev.id,bus,dv); |
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| 48 | for(i=0;i<6;i++){ |
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| 49 | DWORD t; |
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| 50 | int len; |
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| 51 | pci_read_config_dword(&dev,16+4*i,&result); |
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| 52 | if(result) { |
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| 53 | pci_write_config_dword(&dev,16+4*i,0xffffffff); |
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| 54 | pci_read_config_dword(&dev,16+4*i,&t); |
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| 55 | pci_write_config_dword(&dev,16+4*i,result); |
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| 56 | len = ~(t&~0xf)+1; |
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| 57 | if (len){ |
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| 58 | graph_dev.mem[i]=result&~0xf; |
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| 59 | graph_dev.flags[i]=0x80 | (result&0xf); |
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| 60 | graph_dev.len[i]=len; |
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| 61 | graph_dev.mask[i]=t&~0xf; |
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| 62 | printk(KERN_INFO "region%d, base=%.8x len=%d type=%d\n",\ |
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| 63 | i, result&(~0xf), len, result&0xf); |
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| 64 | } |
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| 65 | } |
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| 66 | } |
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| 67 | |||
| 68 | vga_init_vsync(&graph_dev); |
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| 69 | |||
| 70 | } |
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| 71 | |||
| 72 | return 0; |
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| 73 | |||
| 74 | } |
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| 75 | |||
| 76 | static int proc_pci_read_config(DWORD *buf, int size) |
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| 77 | { |
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| 78 | int i; |
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| 79 | |||
| 80 | for(i=0;i<size;i++) { |
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| 81 | buf[i]=__svgalib_pci_read_config_dword(0,i*4); |
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| 82 | } |
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| 83 | |||
| 84 | return 0; |
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| 85 | |||
| 86 | }; |
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| 87 | |||
| 88 | /* |
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| 89 | find a vga device of the specified vendor, and return |
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| 90 | its configuration (64 dwords) in conf |
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| 91 | return zero if device found. |
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| 92 | */ |
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| 93 | |||
| 94 | int __svgalib_pci_find_vendor_vga(unsigned int vendor, unsigned long *conf, int cont) |
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| 95 | { |
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| 96 | DWORD buf[64]; |
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| 97 | |||
| 98 | proc_pci_read_config(buf,64); |
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| 99 | |||
| 100 | if(((buf[0]&0xffff)==vendor)&& |
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| 101 | (((buf[2]>>16)&0xffff)==0x0300)) { /* VGA Class */ |
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| 102 | memcpy(conf,buf,256); |
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| 103 | return 0; |
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| 104 | } |
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| 105 | |||
| 106 | return 1; |
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| 107 | |||
| 108 | } |
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| 109 | |||
| 110 | unsigned char __svgalib_pci_read_config_byte(int pos, int address) |
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| 111 | { |
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| 112 | u8 t; |
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| 113 | |||
| 114 | pci_read_config_byte(&dev, (BYTE)address, &t); |
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| 115 | |||
| 116 | return t; |
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| 117 | |||
| 118 | }; |
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| 119 | |||
| 120 | unsigned int __svgalib_pci_read_config_word(int pos, int address) |
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| 121 | { |
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| 122 | |||
| 123 | u16 t; |
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| 124 | |||
| 125 | pci_read_config_word(&dev, (BYTE)address, &t); |
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| 126 | |||
| 127 | return t; |
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| 128 | |||
| 129 | }; |
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| 130 | |||
| 131 | DWORD __svgalib_pci_read_config_dword(int pos, int address) |
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| 132 | { |
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| 133 | DWORD t; |
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| 134 | |||
| 135 | pci_read_config_dword(&dev, (BYTE)address, &t); |
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| 136 | |||
| 137 | return t; |
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| 138 | |||
| 139 | }; |
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| 140 | |||
| 141 | int __svgalib_pci_read_aperture_len(int pos, int address) |
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| 142 | { |
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| 143 | |||
| 144 | return graph_dev.len[address]; |
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| 145 | |||
| 146 | }; |
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| 147 | |||
| 148 | void __svgalib_pci_write_config_byte(int pos, int address, unsigned char data) |
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| 149 | { |
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| 150 | |||
| 151 | pci_write_config_byte(&dev, (BYTE)address, data); |
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| 152 | |||
| 153 | }; |
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| 154 | |||
| 155 | void __svgalib_pci_write_config_word(int pos, int address, unsigned int data) |
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| 156 | { |
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| 157 | |||
| 158 | pci_write_config_word(&dev, (BYTE)address, data); |
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| 159 | |||
| 160 | }; |
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| 161 | |||
| 162 | void __svgalib_pci_write_config_dword(int pos, int address, DWORD data) |
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| 163 | { |
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| 164 | |||
| 165 | pci_write_config_dword(&dev, (BYTE)address, data); |
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| 166 | |||
| 167 | }; |
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| 168 |