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#define _GNU_SOURCE |
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#include <stdio.h> |
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#include <stdarg.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <pci/pci.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <fcntl.h> |
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#include <unistd.h> |
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#include <dirent.h> |
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#include <pci/header.h> |
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#include "common.h" |
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|
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/* /proc files're 256 bytes but we only need first 64 bytes*/ |
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#define CONFIG_SPACE_SIZE 64 |
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|
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static char *proc_pci_path_default = "/proc/bus/pci/devices"; |
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char* proc_pci_path = NULL; |
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|
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static void __attribute__((noreturn)) error_and_die(char *msg, ...) |
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{ |
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va_list args; |
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|
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va_start(args, msg); |
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fprintf(stderr, "%s: ", "lspcidrake"); |
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vfprintf(stderr, msg, args); |
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fputc('\n', stderr); |
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exit(1); |
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} |
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|
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extern struct pciusb_entries pci_probe(void) { |
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u8 buf[CONFIG_SPACE_SIZE]; |
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struct pciusb_entries r; |
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|
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static struct pci_access *pacc; |
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struct pci_dev *dev; |
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char classbuf[128], vendorbuf[128], devbuf[128]; |
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|
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pacc = pci_alloc(); |
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|
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if (proc_pci_path) { |
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pci_set_param(pacc, "proc.path", proc_pci_path); |
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} |
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|
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|
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pci_init(pacc); |
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pacc->error = error_and_die; |
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pci_scan_bus(pacc); |
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|
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r.nb = 0; |
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r.entries = malloc(sizeof(struct pciusb_entry) * MAX_DEVICES); |
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|
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for (dev = pacc->devices; dev && r.nb < MAX_DEVICES; dev = dev->next, r.nb++) { |
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|
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struct pciusb_entry *e = &r.entries[r.nb]; |
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memset(buf, 0, CONFIG_SPACE_SIZE); // make sure not to retrieve values from previous devices |
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pci_setup_cache(dev, (u8*)buf, CONFIG_SPACE_SIZE); |
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pci_read_block(dev, 0, buf, CONFIG_SPACE_SIZE); |
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pci_fill_info(dev, PCI_FILL_IDENT | PCI_FILL_CLASS | PCI_FILL_CAPS); |
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|
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pciusb_initialize(e); |
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|
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asprintf(&e->text, "%s|%s", |
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pci_lookup_name(pacc, vendorbuf, sizeof(vendorbuf), PCI_LOOKUP_VENDOR, dev->vendor_id, dev->device_id), |
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pci_lookup_name(pacc, devbuf, sizeof(devbuf), PCI_LOOKUP_DEVICE, dev->vendor_id, dev->device_id) |
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); |
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pci_lookup_name(pacc, classbuf, sizeof(classbuf), PCI_LOOKUP_CLASS, dev->device_class), |
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e->class=strdup(classbuf); |
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|
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e->vendor = dev->vendor_id; |
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e->device = dev->device_id; |
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e->pci_domain = dev->domain; |
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e->pci_bus = dev->bus; |
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e->pci_device = dev->dev; |
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e->pci_function = dev->func; |
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|
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e->class_id = dev->device_class; |
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e->subvendor = pci_read_word(dev, PCI_SUBSYSTEM_VENDOR_ID); |
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e->subdevice = pci_read_word(dev, PCI_SUBSYSTEM_ID); |
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e->pci_revision = pci_read_byte(dev, PCI_REVISION_ID); |
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|
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if ((e->subvendor == 0 && e->subdevice == 0) || |
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(e->subvendor == e->vendor && e->subdevice == e->device)) { |
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e->subvendor = 0xffff; |
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e->subdevice = 0xffff; |
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} |
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|
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if (pci_find_cap(dev,PCI_CAP_ID_EXP, PCI_CAP_NORMAL)) |
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e->is_pciexpress = 1; |
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|
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/* special case for realtek 8139 that has two drivers */ |
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if (e->vendor == 0x10ec && e->device == 0x8139) { |
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if (e->pci_revision < 0x20) |
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e->module = strdup("8139too"); |
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else |
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e->module = strdup("8139cp"); |
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} |
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|
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} |
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|
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/* shrink to real size */ |
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r.entries = realloc(r.entries, sizeof(struct pciusb_entry) * r.nb); |
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|
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pci_cleanup(pacc); |
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|
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if (pciusb_find_modules(&r, "pcitable", DO_NOT_LOAD, 1)) |
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return r; |
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|
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/* should not happen */ |
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exit(1); |
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} |
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