114 lines
3.0 KiB
C
114 lines
3.0 KiB
C
/* vim: tabstop=4 shiftwidth=4 noexpandtab
|
|
* This file is part of ToaruOS and is released under the terms
|
|
* of the NCSA / University of Illinois License - see LICENSE.md
|
|
* Copyright (C) 2011-2014 Kevin Lange
|
|
*
|
|
* ToAruOS PCI Initialization
|
|
*/
|
|
|
|
#include <system.h>
|
|
#include <pci.h>
|
|
#include <pci_list.h>
|
|
|
|
|
|
void pci_write_field(uint32_t device, int field, int size, uint32_t value) {
|
|
outportl(PCI_ADDRESS_PORT, pci_get_addr(device, field));
|
|
outportl(PCI_VALUE_PORT, value);
|
|
}
|
|
|
|
uint32_t pci_read_field(uint32_t device, int field, int size) {
|
|
outportl(PCI_ADDRESS_PORT, pci_get_addr(device, field));
|
|
|
|
if (size == 4) {
|
|
uint32_t t = inportl(PCI_VALUE_PORT);
|
|
return t;
|
|
} else if (size == 2) {
|
|
uint16_t t = inports(PCI_VALUE_PORT + (field & 2));
|
|
return t;
|
|
} else if (size == 1) {
|
|
uint8_t t = inportb(PCI_VALUE_PORT + (field & 3));
|
|
return t;
|
|
}
|
|
return 0xFFFF;
|
|
}
|
|
|
|
uint16_t pci_find_type(uint32_t dev) {
|
|
return (pci_read_field(dev, PCI_CLASS, 1) << 8) | pci_read_field(dev, PCI_SUBCLASS, 1);
|
|
}
|
|
|
|
const char * pci_vendor_lookup(unsigned short vendor_id) {
|
|
for (unsigned int i = 0; i < PCI_VENTABLE_LEN; ++i) {
|
|
if (PciVenTable[i].VenId == vendor_id) {
|
|
return PciVenTable[i].VenFull;
|
|
}
|
|
}
|
|
return "";
|
|
}
|
|
|
|
const char * pci_device_lookup(unsigned short vendor_id, unsigned short device_id) {
|
|
for (unsigned int i = 0; i < PCI_DEVTABLE_LEN; ++i) {
|
|
if (PciDevTable[i].VenId == vendor_id && PciDevTable[i].DevId == device_id) {
|
|
return PciDevTable[i].ChipDesc;
|
|
}
|
|
}
|
|
return "";
|
|
}
|
|
|
|
void pci_scan_hit(pci_func_t f, uint32_t dev, void * extra) {
|
|
int dev_vend = (int)pci_read_field(dev, PCI_VENDOR_ID, 2);
|
|
int dev_dvid = (int)pci_read_field(dev, PCI_DEVICE_ID, 2);
|
|
|
|
f(dev, dev_vend, dev_dvid, extra);
|
|
}
|
|
|
|
void pci_scan_func(pci_func_t f, int type, int bus, int slot, int func, void * extra) {
|
|
uint32_t dev = pci_box_device(bus, slot, func);
|
|
if (type == -1 || type == pci_find_type(dev)) {
|
|
pci_scan_hit(f, dev, extra);
|
|
}
|
|
if (pci_find_type(dev) == PCI_TYPE_BRIDGE) {
|
|
pci_scan_bus(f, type, pci_read_field(dev, PCI_SECONDARY_BUS, 1), extra);
|
|
}
|
|
}
|
|
|
|
void pci_scan_slot(pci_func_t f, int type, int bus, int slot, void * extra) {
|
|
uint32_t dev = pci_box_device(bus, slot, 0);
|
|
if (pci_read_field(dev, PCI_VENDOR_ID, 2) == PCI_NONE) {
|
|
return;
|
|
}
|
|
pci_scan_func(f, type, bus, slot, 0, extra);
|
|
if (!pci_read_field(dev, PCI_HEADER_TYPE, 1)) {
|
|
return;
|
|
}
|
|
for (int func = 1; func < 8; func++) {
|
|
uint32_t dev = pci_box_device(bus, slot, func);
|
|
if (pci_read_field(dev, PCI_VENDOR_ID, 2) != PCI_NONE) {
|
|
pci_scan_func(f, type, bus, slot, func, extra);
|
|
}
|
|
}
|
|
}
|
|
|
|
void pci_scan_bus(pci_func_t f, int type, int bus, void * extra) {
|
|
for (int slot = 0; slot < 32; ++slot) {
|
|
pci_scan_slot(f, type, bus, slot, extra);
|
|
}
|
|
}
|
|
|
|
void pci_scan(pci_func_t f, int type, void * extra) {
|
|
pci_scan_bus(f, type, 0, extra);
|
|
|
|
if (!pci_read_field(0, PCI_HEADER_TYPE, 1)) {
|
|
return;
|
|
}
|
|
|
|
for (int func = 1; func < 8; ++func) {
|
|
uint32_t dev = pci_box_device(0, 0, func);
|
|
if (pci_read_field(dev, PCI_VENDOR_ID, 2) != PCI_NONE) {
|
|
pci_scan_bus(f, type, func, extra);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|