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freebsd-skq/sys/pci
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Bill Paul 069363018f Fix a bug brought to light by the people working on SMPng. I don't quite 
understand exactly what it is about SMPng that tickles this bug. What I
do know is that the foo_init() routine in most drivers is often called
twice when an interface is brought up. One time is due to the ifconfig(8)
command calling the SIOCSIFFLAGS ioctl to set the IFF_UP flag, and another
is probably due to the kernel calling ifp->if_init at some point. In any
case, the SMPng changes seem to affect the timing of these two events in
such a way that there is a significant delay before any packets are sent
onto the wire after the interface is first brought up. This manifested
itself locally as an SMPng test machine which failed to obtain an address
via DHCP when booting up.

It looks like the second call to fxp_init() is happening faster now than
it did before, and I think it catches the chip while it's in the process
of dealing with the configuration command from the first call. Whatever
the case, a FXP_CSR_SCB_CNA interrupt event is now generated shortly after
the second fxp_init() call. (This interrupt is apparently never generated
by a non-SMPng kernel, so nobody noticed.)

There are two problems with this: first, fxp_intr() does not handle the
FXP_CSR_SCB_CNA interrupt event (it never tests for it or does anything
to deal with it), and second, the meaning of FXP_CSR_SCB_CNA is not
documented in the driver. (Apparently it means "command unit not active.")
Bad coder. No biscuit.

The fix is to have the FXP_CSR_SCB_CNA interrupt handled just like the
FXP_SCB_STATACK_CXTNO interrupt. This prevents the state machine for
the configuration/RX filter programming stuff from getting wedged for
several seconds and preventing packet transmission.

Noticed by: jhb
2000-08-11 17:47:55 +00:00
..
agp_ali.c A driver for programming the AGP hardware. This is only very lightly 2000-06-09 16:04:30 +00:00
agp_amd.c Release resources properly in detach. 2000-06-10 17:53:20 +00:00
agp_i810.c Add support for Intel's i810 chipset with integrated graphics. An 2000-07-12 10:13:07 +00:00
agp_if.m A driver for programming the AGP hardware. This is only very lightly 2000-06-09 16:04:30 +00:00
agp_intel.c A driver for programming the AGP hardware. This is only very lightly 2000-06-09 16:04:30 +00:00
agp_sis.c A driver for programming the AGP hardware. This is only very lightly 2000-06-09 16:04:30 +00:00
agp_via.c A driver for programming the AGP hardware. This is only very lightly 2000-06-09 16:04:30 +00:00
agp.c Add support for Intel's i810 chipset with integrated graphics. An 2000-07-12 10:13:07 +00:00
agppriv.h Add support for Intel's i810 chipset with integrated graphics. An 2000-07-12 10:13:07 +00:00
agpreg.h Add support for Intel's i810 chipset with integrated graphics. An 2000-07-12 10:13:07 +00:00
agpvar.h A driver for programming the AGP hardware. This is only very lightly 2000-06-09 16:04:30 +00:00
alpm.c Remove ~25 unneeded #include <sys/conf.h> 2000-04-19 14:58:28 +00:00
amd.c Remove ~25 unneeded #include <sys/conf.h> 2000-04-19 14:58:28 +00:00
amd.h Back out the previous change to the queue(3) interface. 2000-05-26 02:09:24 +00:00
cy_pci.c Ahhrggg. Put the test for the compat shims AFTER the file that includes 2000-03-27 20:24:02 +00:00
cy_pcireg.h $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
dc21040reg.h s/Id/FreeBSD/ 1999-08-09 12:52:49 +00:00
ide_pcireg.h $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
if_ar_p.c Ahhrggg. Put the test for the compat shims AFTER the file that includes 2000-03-27 20:24:02 +00:00
if_dc.c Close PR 20438. Make fix for preserving LED settings conditional on 2000-08-07 17:03:20 +00:00
if_dcreg.h Grrrr. Add definition for DC_WDOG_CTLWREN. I made this change yesterday 2000-08-02 16:31:11 +00:00
if_de.c Make all Ethernet drivers attach using ether_ifattach() and detach using 2000-07-13 22:54:34 +00:00
if_devar.h Use bus_space for all register accesses. 2000-05-13 18:47:24 +00:00
if_en_pci.c Ahhrggg. Put the test for the compat shims AFTER the file that includes 2000-03-27 20:24:02 +00:00
if_fxp.c Fix a bug brought to light by the people working on SMPng. I don't quite 2000-08-11 17:47:55 +00:00
if_fxpreg.h Added support for the i82559ER (10/100Mbps NIC for embedded applications). 2000-06-18 10:26:09 +00:00
if_fxpvar.h Added support for cards and on-motherboard NICs that use an SEEPROM 2000-03-28 04:41:42 +00:00
if_mn.c Newbusify this driver at an expense of 40 extra lines of code. 2000-07-10 19:33:41 +00:00
if_rl.c Make all Ethernet drivers attach using ether_ifattach() and detach using 2000-07-13 22:54:34 +00:00
if_rlreg.h Make some tweaks to the RealTek driver: 1999-10-21 19:42:03 +00:00
if_sf.c Close PR# 19904: remember to call sf_setmulti() when initializing the 2000-07-14 19:11:02 +00:00
if_sfreg.h Modify the Adaptec "starfire" driver to reset the PHY on the MII bus 1999-12-05 20:02:45 +00:00
if_sis.c sis_miibus_writereg() was checking for SIS_TYPE_900 and phy != 0 twice 2000-07-14 05:30:48 +00:00
if_sisreg.h Add support for the National Semiconductor DP83815 fast ethernet 2000-07-06 06:02:04 +00:00
if_sk.c Add call to bus_generic_attach() at the end of sk_attach(). It turns out that 2000-08-02 18:19:00 +00:00
if_skreg.h Back out the previous change to the queue(3) interface. 2000-05-26 02:09:24 +00:00
if_sr_p.c Ahhrggg. Put the test for the compat shims AFTER the file that includes 2000-03-27 20:24:02 +00:00
if_ste.c Make all Ethernet drivers attach using ether_ifattach() and detach using 2000-07-13 22:54:34 +00:00
if_stereg.h Spruce up the Sundance ST201 driver: 1999-12-07 20:14:42 +00:00
if_ti.c Add support for the Netgear GA620T copper gigabit card. 2000-08-02 18:49:17 +00:00
if_tireg.h Add support for the Netgear GA620T copper gigabit card. 2000-08-02 18:49:17 +00:00
if_tl.c Make all Ethernet drivers attach using ether_ifattach() and detach using 2000-07-13 22:54:34 +00:00
if_tlreg.h Make some small performance tweaks to the tl driver. This should hopefully 1999-09-19 22:39:24 +00:00
if_tx.c Make all Ethernet drivers attach using ether_ifattach() and detach using 2000-07-13 22:54:34 +00:00
if_txvar.h Added support for SMC9432BTX cards. 2000-06-21 19:19:49 +00:00
if_vr.c Make all Ethernet drivers attach using ether_ifattach() and detach using 2000-07-13 22:54:34 +00:00
if_vrreg.h Close PR# 19617: add support for VIA VT6102 NICs to VIA Rhine driver. 2000-07-05 21:37:21 +00:00
if_wb.c Make all Ethernet drivers attach using ether_ifattach() and detach using 2000-07-13 22:54:34 +00:00
if_wbreg.h Convert the Adaptec and Winbond drivers to miibus. 1999-08-30 23:08:32 +00:00
if_wx.c Make all Ethernet drivers attach using ether_ifattach() and detach using 2000-07-13 22:54:34 +00:00
if_wxreg.h Fix this driver to (finally) work with switches. Some more black 2000-06-16 06:28:31 +00:00
if_wxvar.h Fix this driver to (finally) work with switches. Some more black 2000-06-16 06:28:31 +00:00
if_xl.c Make all Ethernet drivers attach using ether_ifattach() and detach using 2000-07-13 22:54:34 +00:00
if_xlreg.h Update the xl driver to recognize yet another 3c905B/3c905C class NIC: 1999-12-16 18:33:57 +00:00
intpm.c Fix some leakage from inside #ifdef PCI_COMPAT (the FreeBSD 2.2 compat 2000-05-28 16:17:18 +00:00
intpmreg.h $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
isp_pci.c Part of major rewrite for core version 2.0- clarification of 2000-08-01 05:16:49 +00:00
locate.pl use warnings 2000-06-27 22:41:12 +00:00
meteor_reg.h Add $FreeBSD$ 2000-05-01 20:32:07 +00:00
meteor.c Ahhrggg. Put the test for the compat shims AFTER the file that includes 2000-03-27 20:24:02 +00:00
ncr.c ncr.c is no longer a COMPAT_OLDPCI device - remove the warning. 2000-05-28 10:45:06 +00:00
ncrreg.h $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
ohci_pci.c Only display the 'Disable PNP-OS BIOS option' message on the i386 arch. 2000-05-11 20:17:28 +00:00
pccbb.c Initial import of cardbus bridge driver (cbb) from the latest 1999-11-18 07:14:54 +00:00
pccbbreg.h Initial import of cardbus bridge driver (cbb) from the latest 1999-11-18 07:14:54 +00:00
pccbbvar.h Initial import of cardbus bridge driver (cbb) from the latest 1999-11-18 07:14:54 +00:00
pci_compat.c Encapsulate the old PCI compatability support and APIs completely under 2000-05-28 16:35:57 +00:00
pci_if.m * Factor out the object system from new-bus so that it can be used by 2000-04-08 14:17:18 +00:00
pci.c Nuke the useless chip driver. It gets in the way when you want to load 2000-06-09 16:00:29 +00:00
pcic_p.c Make this compile without depending on the FreeBSD 2.2 compatability 2000-05-28 16:31:35 +00:00
pcic_p.h Make this compile without depending on the FreeBSD 2.2 compatability 2000-05-28 16:31:35 +00:00
pcireg.h Encapsulate the old PCI compatability support and APIs completely under 2000-05-28 16:35:57 +00:00
pcisupport.c Add the ESS Solo-1 to generic chip match. 2000-08-03 13:46:52 +00:00
pcivar.h Nuke the useless chip driver. It gets in the way when you want to load 2000-06-09 16:00:29 +00:00
scsiiom.c Add $FreeBSD$ 2000-05-01 20:32:07 +00:00
simos.c Separate the struct bio related stuff out of <sys/buf.h> into 2000-05-05 09:59:14 +00:00
simos.h $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
ti_fw2.h Use a custom Tigon 2 firmware image, hopefully temporarily. This is 2000-07-26 23:55:34 +00:00
ti_fw.h Update the Tigon driver to support 1000baseTX gigE over copper AceNIC 2000-07-20 22:24:43 +00:00
uhci_pci.c Add 440MX chipset. 2000-05-24 02:24:38 +00:00
xmaciireg.h Reoganize/update the SysKonnect driver: 2000-04-22 02:16:41 +00:00
xrpu.c Do not depend on FreeBSD 2.2 compatability defines. 2000-05-28 16:18:58 +00:00