From: Andrew de Quincey <adq_dvb@lidskialf.net>
To: linux1394-devel@lists.sourceforge.net,
lkml <linux-kernel@vger.kernel.org>
Cc: torvalds@osdl.org
Subject: [PATCH] 2.4.23-pre8 ieee1394 on nforce2
Date: Tue, 28 Oct 2003 22:16:53 +0000 [thread overview]
Message-ID: <200310282216.53346.adq_dvb@lidskialf.net> (raw)
Hi, ieee1394 does not work on my nforce2 motherboard. This patch fixes it. Please apply.
This basically enables each port supported by the ieee1394 PHY device, something
my BIOS/ the current code neglects to do.
diff -Naurb linux-2.4.23-pre8.orig/drivers/ieee1394/ohci1394.c linux-2.4.23-pre8/drivers/ieee1394/ohci1394.c
--- linux-2.4.23-pre8.orig/drivers/ieee1394/ohci1394.c 2003-08-25 12:44:41.000000000 +0100
+++ linux-2.4.23-pre8/drivers/ieee1394/ohci1394.c 2003-10-28 22:06:56.545324800 +0000
@@ -504,6 +504,7 @@
static void ohci_initialize(struct ti_ohci *ohci)
{
char irq_buf[16];
+ int numports, port;
quadlet_t buf;
spin_lock_init(&ohci->phy_reg_lock);
@@ -615,6 +616,14 @@
pci_resource_start(ohci->dev, 0),
pci_resource_start(ohci->dev, 0) + OHCI1394_REGISTER_SIZE - 1,
ohci->max_packet_size);
+
+ /* enable all ports on the PHY, in case the BIOS has neglected to */
+ numports = get_phy_reg(ohci, 2) & 0xf;
+ for(port=0; port < numports; port++) {
+ // choose the port and enable it
+ set_phy_reg(ohci, 7, (0 << 5) | (port & 0xf));
+ set_phy_reg(ohci, 8, (get_phy_reg(ohci, 8) & ~1));
+ }
}
/*
reply other threads:[~2003-10-28 22:16 UTC|newest]
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