Re: EHCI problem on -current, and unknown devs

John Baldwin wrote:
On Thursday 30 November 2006 22:33, Stephane E. Potvin wrote:
John Baldwin wrote:
On Wednesday 29 November 2006 17:39, Stephane E. Potvin wrote:
John Baldwin wrote:
On Thursday 16 November 2006 03:34, Stephane E. Potvin wrote:
Doug Barton wrote:
[ No response from the -usb list, so I'll try here. ]

Howdy,

I have a new Dell Latitude D620, and using recent -current I get this:

ehci0: <Intel 82801GB/R (ICH7) USB 2.0 controller> mem
0xffa80000-0xffa803ff irq 20 at device 29.7 on pci0
ehci0: Could not map memory
device_attach: ehci0 attach returned 6

FWIW, I also saw a user on the -stable list report this same problem.
I'm assuming this is bad, but what to do about it?


I'm also getting some unknown devices:

uhub4: <vendor 0x413c product 0xa005, class 9/0, rev 2.00/50.18, addr
2> on uhub0
uhub5: <vendor 0x0b97 product 0x7761, class 9/0, rev 1.10/1.10, addr
3> on uhub4
ugen2: <vendor 0x413c product 0x8103, class 224/1, rev 2.00/24.22,
addr 6> on uhub4
uhub6: <vendor 0x413c product 0x0058, class 9/0, rev 2.00/0.00, addr
2> on uhub3

Vendor ID 0x413c is Dell, and is already in the usbdevs file. The
other vendor is O2, and I got their ID for the attached patch from the
list at http://www.usb.org/developers/tools. The 0x0058 device is
already in our usbdevs file, it's the port replicator (docking
station) that the laptop is plugged into currently. I added the 0x8103
device in the attached patch based on an entry in the NetBSD usbdevs
file. (The entry makes sense to me as well, since I have one of
those.)
So I have two questions ... for the devices (and vendors) that are
already in my local usbdevs file, why are they still showing up by ID?
And how do I find the device IDs for the two unknown devices? I
imagine that the O2 device is related to my built in smart card
reader, not sure about the other one.

Hi Doug,

I had the same problem with my Dell Inspiron 9400 and fixed it using
the
following patch:

Index: sys/kern/subr_rman.c
===================================================================
RCS file: /home/FreeBSD/ncvs/src/sys/kern/subr_rman.c,v
retrieving revision 1.53
diff -u -r1.53 subr_rman.c
--- sys/kern/subr_rman.c 11 Sep 2006 19:31:52 -0000 1.53
+++ sys/kern/subr_rman.c 2 Nov 2006 03:05:34 -0000
@@ -170,7 +170,7 @@

/* Skip entries before us. */
for (s = TAILQ_FIRST(&rm->rm_list);
- s && s->r_end + 1 < r->r_start;
+ s && s->r_end < r->r_start;
s = TAILQ_NEXT(s, r_link))
;

This code was added in revision 1.53 when support for intelligent merging was added. When r_end is equal to UINT_MAX, adding one will cause it to overflow, creating quite a mess in the entries ordering.
I'm
not sure the fix I did is completely correct as I didn't had time to check if the +1 is needed at all in this case. At least it fixed the problem for me.
It is needed to avoid overlaps. Can you show me which
rman_manage_region() is
breaking? Rather, enable the DPRINTF() in rman_manage_region() and
provide
the output?

Here's the output of booting an unmodified kernel with debug.rman_debug=1
Try this:

I had to modify the patch a little to make it compile:

When I try to boot after patching nearly all the drivers fail to allocate their resources, making the laptop unable to mount root as the ata driver failed to attach. I can't provide any log yet as I don't have a serial port on the laptop to grab the output.

Sign bug on my part. try this:

[... patch removed]

I had to modify the patch a little again to make it compile. With this slight modification (changing rm->link to rm->list), the patch seems to be working fine and I got back my ehci controller.

Index: subr_rman.c
===================================================================
RCS file: /home/FreeBSD/ncvs/src/sys/kern/subr_rman.c,v
retrieving revision 1.53
diff -u -r1.53 subr_rman.c
--- subr_rman.c 11 Sep 2006 19:31:52 -0000 1.53
+++ subr_rman.c 1 Dec 2006 15:25:59 -0000
@@ -61,6 +61,7 @@
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
+#include <sys/limits.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
@@ -169,10 +170,12 @@
mtx_lock(rm->rm_mtx);

/* Skip entries before us. */
- for (s = TAILQ_FIRST(&rm->rm_list);
- s && s->r_end + 1 < r->r_start;
- s = TAILQ_NEXT(s, r_link))
- ;
+ TAILQ_FOREACH(s, &rm->rm_list, r_link) {
+ if (s->r_end == ULONG_MAX)
+ break;
+ if (s->r_end + 1 >= r->r_start)
+ break;
+ }

/* If we ran off the end of the list, insert at the tail. */
if (s == NULL) {

Thanks a lot!

Steph

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