Stubs for accessing the PCI driver

lib/syslib/pci_first_dev.c

@@ -0,0 +1,37 @@
+/*
+pci_first_dev.c
+*/
+
+#include "syslib.h"
+#include <minix/sysutil.h>
+
+/*===========================================================================*
+ *				pci_first_dev				     *
+ *===========================================================================*/
+PUBLIC int pci_first_dev(devindp, vidp, didp)
+int *devindp;
+u16_t *vidp;
+u16_t *didp;
+{
+	int r;
+	message m;
+
+	m.m_type= BUSC_PCI_FIRST_DEV;
+	r= sendrec(PCI_PROC_NR, &m);
+	if (r != 0)
+		panic("pci", "pci_first_dev: can't talk to PCI", r);
+	if (m.m_type == 1)
+	{
+		*devindp= m.m1_i1;
+		*vidp= m.m1_i2;
+		*didp= m.m1_i3;
+		printf("pci_first_dev: got device %d, %04x/%04x\n", 
+			*devindp, *vidp, *didp);
+		return 1;
+	}
+	if (m.m_type != 0)
+		panic("pci", "pci_first_dev: got bad reply from PCI", m.m_type);
+
+	printf("pci_first_dev: got nothing\n");
+	return 0;
+}