| Line 31... |
Line 31... |
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//--------------------------------------------------------------------
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//--------------------------------------------------------------------
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int pex_show_capabilities( char *buf, struct pex_device *brd )
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int pex_show_capabilities( char *buf, struct pex_device *brd )
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{
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{
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int i = 0, res = -1;
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int i = 0;
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int res = 0;
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char *p = buf;
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char *p = buf;
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u8 cap;
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u8 cap = 0;
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u8 cap_id;
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u32 cap_id = 0;
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p += sprintf(p,"\n" );
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p += sprintf(p,"\n" );
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p += sprintf(p," Device capabilities\n" );
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p += sprintf(p,"\n" );
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res = pci_read_config_byte(brd->m_pci, 0x34, &cap);
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res = pci_read_config_byte(brd->m_pci, 0x34, &cap);
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if(res < 0) {
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if(res < 0) {
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p += sprintf(p, " Error read capabilities pointer\n");
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p += sprintf(p, " Error read capabilities pointer\n");
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goto err_exit;
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goto err_exit;
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}
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}
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res = pci_read_config_byte(brd->m_pci, cap, &cap_id);
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p += sprintf(p, " Capability pointer: 0x%x\n", cap);
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if(res < 0) {
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p += sprintf(p, " Error read capabilities id\n");
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goto err_exit;
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}
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if(cap_id != 0x10) { //not PCI Express capabilities
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while(1) {
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res = pci_read_config_byte(brd->m_pci, cap+1, &cap);
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res = pci_read_config_dword(brd->m_pci, cap, &cap_id);
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if(res < 0) {
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if(res < 0) {
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p += sprintf(p, " Error read capabilities id\n");
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p += sprintf(p, " Error read capabilities id\n");
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goto err_exit;
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goto err_exit;
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}
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}
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p += sprintf(p, " Capability ID: 0x%x\n", cap_id);
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if((cap_id & 0xff) == 0x10) {
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break;
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}
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}
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res = pci_read_config_byte(brd->m_pci, cap, &cap_id);
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cap = ((cap_id >> 8) & 0xff);
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if(res < 0) {
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if(!cap)
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p += sprintf(p, " Error read capabilities id\n");
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break;
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goto err_exit;
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} else {
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p += sprintf(p, " CAP_ID = 0x%X\n", cap_id);
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}
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}
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if(cap_id != 0x10) {
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if((cap_id & 0xff) != 0x10) {
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p += sprintf(p, " Can't find PCI Express capabilities\n");
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p += sprintf(p, " Can't find PCI Express capabilities\n");
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goto err_exit;
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goto err_exit;
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}
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}
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p += sprintf(p,"\n" );
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p += sprintf(p, " PCI Express Capability Register Set\n");
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p += sprintf(p,"\n" );
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for(i=0; i<9; i++) {
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for(i=0; i<9; i++) {
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u32 reg = 0;
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u32 reg = 0;
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int j = cap + 4*i;
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int j = cap + 4*i;
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res = pci_read_config_dword(brd->m_pci, j, ®);
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res = pci_read_config_dword(brd->m_pci, j, ®);
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if(res < 0) {
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if(res < 0) {
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p += sprintf(p, " Error read capabilities sructure: offset %x\n", j);
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p += sprintf(p, " Error read capabilities sructure: offset %x\n", j);
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goto err_exit;
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goto err_exit;
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}
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}
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p += sprintf(p, " %x: = 0x%X\n", j, reg);
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p += sprintf(p, " 0x%x: 0x%X\n", j, reg);
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}
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}
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err_exit:
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err_exit:
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return (p-buf);
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return (p-buf);
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