linux-kernel - [PATCH] PCI: Limit VPD length for Broadcom 5708S

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Date:	Thu, 31 Jul 2008 20:27:31 +0200
From:	Eric Dumazet <dada1@...mosbay.com>
To:	benli@...adcom.com, willy@...ux.intel.com, jbarnes@...tuousgeek.org
Cc:	linux kernel <linux-kernel@...r.kernel.org>,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: [PATCH] PCI: Limit VPD length for Broadcom 5708S

While trying to upgrade kernel from 2.6.25 to 2.6.26 on a ProLiant BL460c G1,
I faced this problem on integrated Broadcom 5708S NIC when trying to UP them.

bnx2: fw sync timeout, reset code = 1030003

I noticed that commit 99cb233d60cbe644203f19938c729ea2bb004d70 
(PCI: Limit VPD read/write lengths for Broadcom 5706, 5708, 5709 rev.A)
was probably a good candidate to solve the problem.

Apparently, it added PCI quirks for a list of Broadcom NICs, but
quirk_brcm_570x_limit_vpd() ignores part of them.

I found the following patch useful to restore correct operation on my machine.

Some information about this nic :

03:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708S Gigabit Ethernet (rev 12)
        Subsystem: Hewlett-Packard Company NC373i Integrated Multifunction Gigabit Server Adapter
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr+ Stepping- SERR+ FastB2B-
        Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 64 (16000ns min), Cache Line Size 10
        Interrupt: pin A routed to IRQ 222
        Region 0: Memory at f6000000 (64-bit, non-prefetchable) [size=32M]
        [virtual] Expansion ROM at d1200000 [disabled] [size=16K]
        Capabilities: [40] PCI-X non-bridge device.
                Command: DPERE- ERO- RBC=0 OST=4
                Status: Bus=3 Dev=0 Func=0 64bit+ 133MHz+ SCD- USC-, DC=simple, DMMRBC=0, DMOST=4, DMCRS=2, RSCEM-
        Capabilities: [48] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold+)
                Status: D0 PME-Enable- DSel=0 DScale=1 PME-
        Capabilities: [50] Vital Product Data
        Capabilities: [58] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+
                Address: 00000000feeff00c  Data: 4179

after applying patch :

# hexdump -C "/sys/devices/pci0000:00/0000:00:1c.0/0000:02:00.0/0000:03:00.0/vpd"
00000000  82 2f 00 48 50 20 4e 43  33 37 33 69 20 4d 75 6c  |./.HP NC373i Mul|
00000010  74 69 66 75 6e 63 74 69  6f 6e 20 47 69 67 61 62  |tifunction Gigab|
00000020  69 74 20 53 65 72 76 65  72 20 41 64 61 70 74 65  |it Server Adapte|
00000030  72 00 90 4a 00 50 4e 03  4e 2f 41 45 43 03 4e 2f  |r..J.PN.N/AEC.N/|
00000040  41 53 4e 0a 30 31 32 33  34 35 36 37 38 39 4d 4e  |ASN.0123456789MN|
00000050  04 31 30 33 43 52 56 26  a2 00 00 00 00 00 00 00  |.103CRV&........|
00000060  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000070  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 78  |...............x|
00000080

Patch against current Linus tree, should also be sent for linux-2.6.26.2 inclusion.

I have no idea if 5706S and 5709S also needs this truncation of VPD length

Thank you

[PATCH] PCI: Limit VPD length for Broadcom 5708S

BCM5708S wont work correctly unless VPD length truncated to 128

Signed-off-by: Eric Dumazet <dada1@...mosbay.com>

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 0fb3650..59667e5 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1756,9 +1756,12 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_c
  */
 static void __devinit quirk_brcm_570x_limit_vpd(struct pci_dev *dev)
 {
-	/*  Only disable the VPD capability for 5706, 5708, and 5709 rev. A */
+	/*
+	 * Only disable the VPD capability for 5706, 5708, 5708S and 5709 rev. A
+	 */
 	if ((dev->device == PCI_DEVICE_ID_NX2_5706) ||
 	    (dev->device == PCI_DEVICE_ID_NX2_5708) ||
+	    (dev->device == PCI_DEVICE_ID_NX2_5708S) ||
 	    ((dev->device == PCI_DEVICE_ID_NX2_5709) &&
 	     (dev->revision & 0xf0) == 0x0)) {
 		if (dev->vpd)


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