From db5a94788a783a716de6c79e23f2e45093aca398 Mon Sep 17 00:00:00 2001
From: Dexter Morgan <dmorgan@mageia.org>
Date: Thu, 2 Jun 2011 20:49:50 +0000
Subject: Branch for updates

---
 pci.c | 112 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100644 pci.c

(limited to 'pci.c')

diff --git a/pci.c b/pci.c
new file mode 100644
index 0000000..5bd344f
--- /dev/null
+++ b/pci.c
@@ -0,0 +1,112 @@
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <pci/pci.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <pci/header.h>
+#include "common.h"
+
+/* /proc files're 256 bytes but we only need first 64 bytes*/
+#define CONFIG_SPACE_SIZE 64
+
+static char *proc_pci_path_default = "/proc/bus/pci/devices";
+char* proc_pci_path = NULL;
+
+static void __attribute__((noreturn)) error_and_die(char *msg, ...)
+{
+  va_list args;
+
+  va_start(args, msg);
+  fprintf(stderr, "%s: ", "lspcidrake");
+  vfprintf(stderr, msg, args);
+  fputc('\n', stderr);
+  exit(1);
+}
+
+extern struct pciusb_entries pci_probe(void) {
+	u8 buf[CONFIG_SPACE_SIZE];
+	struct pciusb_entries r;
+
+	static struct pci_access *pacc;
+	struct pci_dev *dev;
+	char classbuf[128], vendorbuf[128], devbuf[128];
+
+	pacc = pci_alloc();
+
+	if (proc_pci_path) {
+             pci_set_param(pacc, "proc.path", proc_pci_path);
+	}
+
+
+	pci_init(pacc);
+	pacc->error = error_and_die;
+	pci_scan_bus(pacc);
+
+	r.nb = 0;
+	r.entries = malloc(sizeof(struct pciusb_entry) * MAX_DEVICES);
+
+	for (dev = pacc->devices; dev && r.nb < MAX_DEVICES; dev = dev->next, r.nb++) {
+
+		struct pciusb_entry *e = &r.entries[r.nb];
+		memset(buf, 0, CONFIG_SPACE_SIZE); // make sure not to retrieve values from previous devices
+		pci_setup_cache(dev, (u8*)buf, CONFIG_SPACE_SIZE);
+		pci_read_block(dev, 0, buf, CONFIG_SPACE_SIZE);
+		pci_fill_info(dev, PCI_FILL_IDENT | PCI_FILL_CLASS | PCI_FILL_CAPS);
+
+		pciusb_initialize(e);
+
+          asprintf(&e->text, "%s|%s",
+                   pci_lookup_name(pacc, vendorbuf, sizeof(vendorbuf), PCI_LOOKUP_VENDOR, dev->vendor_id, dev->device_id),
+                   pci_lookup_name(pacc, devbuf,    sizeof(devbuf),    PCI_LOOKUP_DEVICE, dev->vendor_id, dev->device_id)
+               );
+          pci_lookup_name(pacc, classbuf, sizeof(classbuf), PCI_LOOKUP_CLASS, dev->device_class),
+          e->class=strdup(classbuf);    
+
+		e->vendor =     dev->vendor_id;
+		e->device =     dev->device_id;
+		e->pci_domain = dev->domain;
+		e->pci_bus =    dev->bus;
+		e->pci_device = dev->dev;
+		e->pci_function = dev->func;
+
+		e->class_id = dev->device_class;
+		e->subvendor = pci_read_word(dev, PCI_SUBSYSTEM_VENDOR_ID);
+		e->subdevice = pci_read_word(dev, PCI_SUBSYSTEM_ID);
+		e->pci_revision = pci_read_byte(dev, PCI_REVISION_ID);
+				
+		if ((e->subvendor == 0 && e->subdevice == 0) ||
+		    (e->subvendor == e->vendor && e->subdevice == e->device)) {
+			e->subvendor = 0xffff;
+			e->subdevice = 0xffff;
+		}
+
+		if (pci_find_cap(dev,PCI_CAP_ID_EXP, PCI_CAP_NORMAL))
+                               e->is_pciexpress = 1;
+
+                /* special case for realtek 8139 that has two drivers */
+                if (e->vendor == 0x10ec && e->device == 0x8139) {
+                     if (e->pci_revision < 0x20)
+                          e->module = strdup("8139too");
+                     else
+                          e->module = strdup("8139cp");
+                }
+
+	}
+
+	/* shrink to real size */
+	r.entries = realloc(r.entries,  sizeof(struct pciusb_entry) * r.nb);
+
+	pci_cleanup(pacc);
+
+	if (pciusb_find_modules(&r, "pcitable", DO_NOT_LOAD, 1))
+		return r;
+
+	/* should not happen */
+	exit(1);
+}
-- 
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