Date: Sat, 8 Apr 2000 13:49:51 +0100 (BST) From: Nick Hibma <n_hibma@calcaphon.com> To: usb-bsd@egroups.com Cc: current@freebsd.org, yokota@zodiac.mech.utsunomiya-u.ac.jp Subject: Re: SMP problem? (was: Re: [usb-bsd] USB To Do list) Message-ID: <Pine.BSF.4.20.0004081344560.10044-100000@localhost> In-Reply-To: <200004080519.OAA02320@zodiac.mech.utsunomiya-u.ac.jp>
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> uhci0: <Intel 82371AB/EB (PIIX4) USB controller> port 0xe000-0xe01f irq 15 at device 7.2 on pci0
> uhci0: LegSup = 0x00000010
^^^^^^^^^^
PIRQDEN (IRQ's Enable) bit is not set by default. We set it right
afterwards, but you you might want to check this out by copying the
device_printf. The value should be 0x2000.
In uhci_pci.c:
* anymore if it is connected to the ports of the root hub?
*/
#ifdef UHCI_DEBUG
if (pci_read_config(self, PCI_LEGSUP, 4)!=PCI_LEGSUP_USBPIRQDEN)
device_printf(self, "LegSup = 0x%08x\n",
pci_read_config(self, PCI_LEGSUP, 4));
#endif
pci_write_config(self, PCI_LEGSUP, PCI_LEGSUP_USBPIRQDEN, 4);
+ device_printf(self, "LegSup = 0x%08x\n",
+ pci_read_config(self, PCI_LEGSUP, 4));
err = uhci_init(sc);
> >Shared interrupt?
>
> No shared interrupt. Both IDE channels are disabled by BIOS, thus,
> irq 15 is free. After all, The USB drivers work if I run a UP kernel
> on the same machine.
Um, no, it still might conflict. Could you assign 14 and 15 to legacy
ISA, or move the UHCI controller onto a different interrupt and try
again?
> I know. It works on my another SMP box running 4.0-STABLE ;-<
There is no difference between 5.0 nd 4.0 that could create this
problem, so it must be a difference in hardware.
Nick
--
n_hibma@webweaving.org
n_hibma@freebsd.org USB project
http://www.etla.net/~n_hibma/
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