2 * arch/mips/vr41xx/nec-cmbvr4133/init.c
4 * PROM library initialisation code for NEC CMB-VR4133 board.
6 * Author: Yoichi Yuasa <yyuasa@mvista.com, or source@mvista.com> and
7 * Jun Sun <jsun@mvista.com, or source@mvista.com> and
8 * Alex Sapkov <asapkov@ru.mvista.com>
10 * 2001-2004 (c) MontaVista, Software, Inc. This file is licensed under
11 * the terms of the GNU General Public License version 2. This program
12 * is licensed "as is" without any warranty of any kind, whether express
15 * Support for NEC-CMBVR4133 in 2.6
16 * Manish Lachwani (mlachwani@mvista.com)
18 #include <linux/config.h>
20 #ifdef CONFIG_ROCKHOPPER
22 #include <linux/pci.h>
24 #define PCICONFDREG 0xaf000c14
25 #define PCICONFAREG 0xaf000c18
27 void disable_pcnet(void)
32 * Workaround for the bug in PMON on VR4133. PMON leaves
33 * AMD PCNet controller (on Rockhopper) initialized and running in
34 * bus master mode. We have do disable it before doing any
35 * further initialization. Or we get problems with PCI bus 2
36 * and random lockups and crashes.
40 (PCI_DEVFN(1,0) << 8) |
45 data = readl(PCICONFDREG);
48 (PCI_DEVFN(1,0) << 8) |
53 data = readl(PCICONFDREG);
56 (PCI_DEVFN(1,0) << 8) |
63 writel(data, PCICONFDREG);