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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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| 185 | giacomo | 20 | DWORD result,dw; |
| 54 | pj | 21 | BYTE bus,dv; |
| 22 | |||
| 184 | giacomo | 23 | printk(KERN_INFO "Initializing PCI BUS...\n"); |
| 54 | pj | 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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| 184 | giacomo | 28 | if (pci_init() != 1) return -1; |
| 54 | pj | 29 | |
| 30 | if(pci_present()) { |
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| 31 | |||
| 32 | pci_class(PCI_CLASS_DISPLAY_VGA<<8,0,&bus,&dv); |
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| 33 | |||
| 34 | dev.bus->number = bus; |
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| 35 | dev.devfn = dv; |
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| 36 | memcpy(&(graph_dev.dev),&dev,sizeof(struct pci_dev)); |
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| 37 | |||
| 38 | pci_read_config_word(&dev,0,&(graph_dev.vendor)); |
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| 39 | pci_read_config_word(&dev,2,&(graph_dev.id)); |
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| 40 | pci_read_config_byte(&dev,8,&(graph_dev.revision)); |
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| 41 | printk(KERN_INFO "VGA Vendor:%.4x id:%.4x bus:%d dev:%d\n",\ |
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| 42 | graph_dev.vendor,graph_dev.id,bus,dv); |
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| 43 | for(i=0;i<6;i++){ |
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| 44 | DWORD t; |
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| 45 | int len; |
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| 46 | pci_read_config_dword(&dev,16+4*i,&result); |
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| 47 | if(result) { |
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| 48 | pci_write_config_dword(&dev,16+4*i,0xffffffff); |
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| 49 | pci_read_config_dword(&dev,16+4*i,&t); |
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| 50 | pci_write_config_dword(&dev,16+4*i,result); |
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| 51 | len = ~(t&~0xf)+1; |
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| 52 | if (len){ |
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| 53 | graph_dev.mem[i]=result&~0xf; |
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| 54 | graph_dev.flags[i]=0x80 | (result&0xf); |
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| 55 | graph_dev.len[i]=len; |
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| 56 | graph_dev.mask[i]=t&~0xf; |
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| 184 | giacomo | 57 | printk(KERN_INFO "region%d, base=%.8lx len=%d type=%ld\n",\ |
| 54 | pj | 58 | i, result&(~0xf), len, result&0xf); |
| 59 | } |
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| 60 | } |
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| 61 | } |
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| 185 | giacomo | 62 | |
| 63 | pcibios_read_config_dword(bus,dv,PCI_COMMAND,&dw); |
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| 64 | dw |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); |
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| 65 | pcibios_write_config_dword(bus,dv,PCI_COMMAND,dw); |
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| 54 | pj | 66 | |
| 184 | giacomo | 67 | //vga_init_vsync(&graph_dev); |
| 54 | pj | 68 | |
| 69 | } |
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| 70 | |||
| 71 | return 0; |
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| 72 | |||
| 73 | } |
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| 74 | |||
| 75 | static int proc_pci_read_config(DWORD *buf, int size) |
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| 76 | { |
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| 77 | int i; |
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| 78 | |||
| 79 | for(i=0;i<size;i++) { |
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| 80 | buf[i]=__svgalib_pci_read_config_dword(0,i*4); |
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| 81 | } |
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| 82 | |||
| 83 | return 0; |
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| 84 | |||
| 85 | }; |
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| 86 | |||
| 87 | /* |
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| 88 | find a vga device of the specified vendor, and return |
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| 89 | its configuration (64 dwords) in conf |
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| 90 | return zero if device found. |
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| 91 | */ |
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| 92 | |||
| 93 | int __svgalib_pci_find_vendor_vga(unsigned int vendor, unsigned long *conf, int cont) |
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| 94 | { |
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| 95 | DWORD buf[64]; |
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| 96 | |||
| 97 | proc_pci_read_config(buf,64); |
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| 98 | |||
| 99 | if(((buf[0]&0xffff)==vendor)&& |
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| 100 | (((buf[2]>>16)&0xffff)==0x0300)) { /* VGA Class */ |
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| 101 | memcpy(conf,buf,256); |
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| 102 | return 0; |
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| 103 | } |
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| 104 | |||
| 105 | return 1; |
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| 106 | |||
| 107 | } |
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| 108 | |||
| 109 | unsigned char __svgalib_pci_read_config_byte(int pos, int address) |
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| 110 | { |
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| 111 | u8 t; |
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| 112 | |||
| 113 | pci_read_config_byte(&dev, (BYTE)address, &t); |
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| 114 | |||
| 115 | return t; |
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| 116 | |||
| 117 | }; |
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| 118 | |||
| 119 | unsigned int __svgalib_pci_read_config_word(int pos, int address) |
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| 120 | { |
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| 121 | |||
| 122 | u16 t; |
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| 123 | |||
| 124 | pci_read_config_word(&dev, (BYTE)address, &t); |
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| 125 | |||
| 126 | return t; |
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| 127 | |||
| 128 | }; |
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| 129 | |||
| 130 | DWORD __svgalib_pci_read_config_dword(int pos, int address) |
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| 131 | { |
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| 132 | DWORD t; |
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| 133 | |||
| 134 | pci_read_config_dword(&dev, (BYTE)address, &t); |
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| 135 | |||
| 136 | return t; |
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| 137 | |||
| 138 | }; |
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| 139 | |||
| 140 | int __svgalib_pci_read_aperture_len(int pos, int address) |
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| 141 | { |
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| 142 | |||
| 143 | return graph_dev.len[address]; |
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| 144 | |||
| 145 | }; |
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| 146 | |||
| 147 | void __svgalib_pci_write_config_byte(int pos, int address, unsigned char data) |
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| 148 | { |
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| 149 | |||
| 150 | pci_write_config_byte(&dev, (BYTE)address, data); |
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| 151 | |||
| 152 | }; |
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| 153 | |||
| 154 | void __svgalib_pci_write_config_word(int pos, int address, unsigned int data) |
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| 155 | { |
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| 156 | |||
| 157 | pci_write_config_word(&dev, (BYTE)address, data); |
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| 158 | |||
| 159 | }; |
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| 160 | |||
| 161 | void __svgalib_pci_write_config_dword(int pos, int address, DWORD data) |
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| 162 | { |
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| 163 | |||
| 164 | pci_write_config_dword(&dev, (BYTE)address, data); |
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| 165 | |||
| 166 | }; |
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| 167 |