Stubs for accessing the PCI driver

2005-12-02 14:41:46 +00:00
parent b3cd15b01b
commit 3dd0a97049
12 changed files with 391 additions and 0 deletions
@@ -0,0 +1,42 @@
+/*
+pci_find_dev.c
+*/
+
+#include "syslib.h"
+#include <minix/sysutil.h>
+
+/*===========================================================================*
+ *				pci_find_dev				     *
+ *===========================================================================*/
+PUBLIC int pci_find_dev(bus, dev, func, devindp)
+u8_t bus;
+u8_t dev;
+u8_t func;
+int *devindp;
+{
+	int r;
+	message m;
+
+	m.m_type= BUSC_PCI_FIND_DEV;
+	m.m1_i1= bus;
+	m.m1_i2= dev;
+	m.m1_i3= func;
+
+	r= sendrec(PCI_PROC_NR, &m);
+	if (r != 0)
+		panic("pci", "pci_find_dev: can't talk to PCI", r);
+
+	if (m.m_type == 1)
+	{
+		*devindp= m.m1_i1;
+		printf("pci_find_dev: got device %d for %d.%d.%d\n",
+			*devindp, bus, dev, func);
+		return 1;
+	}
+	if (m.m_type != 0)
+		panic("pci", "pci_find_dev: got bad reply from PCI", m.m_type);
+
+	printf("pci_find_dev: got nothing\n");
+	return 0;
+}
+