From mboxrd@z Thu Jan 1 00:00:00 1970 From: Don Fry Subject: [PATCH] pcnet32: break in 2.6.18-rc1 identified Date: Tue, 22 Aug 2006 10:22:37 -0700 Message-ID: <20060822172237.GA27557@us.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org Return-path: Received: from e1.ny.us.ibm.com ([32.97.182.141]:44733 "EHLO e1.ny.us.ibm.com") by vger.kernel.org with ESMTP id S932266AbWHVRWA (ORCPT ); Tue, 22 Aug 2006 13:22:00 -0400 Received: from d01relay04.pok.ibm.com (d01relay04.pok.ibm.com [9.56.227.236]) by e1.ny.us.ibm.com (8.12.11.20060308/8.12.11) with ESMTP id k7MHLx4Q007041 for ; Tue, 22 Aug 2006 13:21:59 -0400 Received: from d01av04.pok.ibm.com (d01av04.pok.ibm.com [9.56.224.64]) by d01relay04.pok.ibm.com (8.13.6/8.13.6/NCO v8.1.1) with ESMTP id k7MHLxEe208584 for ; Tue, 22 Aug 2006 13:21:59 -0400 Received: from d01av04.pok.ibm.com (loopback [127.0.0.1]) by d01av04.pok.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id k7MHLxQd027823 for ; Tue, 22 Aug 2006 13:21:59 -0400 To: tsbogend@alpha.franken.de, jgarzik@pobox.com Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org A change I made for 2.6.17 and another for 2.6.18 do not work on older pcnet32 chips which I do not have access to. If the chip is a 79C970 or 79C965, do not try and suspend or check the link status. I have tested with a 79C970A, 79C971, 79C972, 79C973, 79C975, 79C976, and 79C978. Please apply to 2.6.18. Signed-off-by: Don Fry --- linux-2.6.18-rc3-git1/drivers/net/orig.pcnet32.c Tue Aug 1 14:47:07 2006 +++ linux-2.6.18-rc3-git1/drivers/net/pcnet32.c Thu Aug 3 08:36:26 2006 @@ -202,6 +202,8 @@ static int homepna[MAX_UNITS]; #define CSR15 15 #define PCNET32_MC_FILTER 8 +#define PCNET32_79C970A 0x2621 + /* The PCNET32 Rx and Tx ring descriptors. */ struct pcnet32_rx_head { u32 base; @@ -289,6 +291,7 @@ struct pcnet32_private { /* each bit indicates an available PHY */ u32 phymask; + unsigned short chip_version; /* which variant this is */ }; static int pcnet32_probe_pci(struct pci_dev *, const struct pci_device_id *); @@ -724,9 +727,11 @@ static u32 pcnet32_get_link(struct net_d spin_lock_irqsave(&lp->lock, flags); if (lp->mii) { r = mii_link_ok(&lp->mii_if); - } else { + } else if (lp->chip_version >= PCNET32_79C970A) { ulong ioaddr = dev->base_addr; /* card base I/O address */ r = (lp->a.read_bcr(ioaddr, 4) != 0xc0); + } else { /* can not detect link on really old chips */ + r = 1; } spin_unlock_irqrestore(&lp->lock, flags); @@ -1091,6 +1096,10 @@ static int pcnet32_suspend(struct net_de ulong ioaddr = dev->base_addr; int ticks; + /* really old chips have to be stopped. */ + if (lp->chip_version < PCNET32_79C970A) + return 0; + /* set SUSPEND (SPND) - CSR5 bit 0 */ csr5 = a->read_csr(ioaddr, CSR5); a->write_csr(ioaddr, CSR5, csr5 | CSR5_SUSPEND); @@ -1529,6 +1538,7 @@ pcnet32_probe1(unsigned long ioaddr, int lp->mii_if.reg_num_mask = 0x1f; lp->dxsuflo = dxsuflo; lp->mii = mii; + lp->chip_version = chip_version; lp->msg_enable = pcnet32_debug; if ((cards_found >= MAX_UNITS) || (options[cards_found] > sizeof(options_mapping))) @@ -1839,10 +1849,7 @@ static int pcnet32_open(struct net_devic val |= 2; } else if (lp->options & PCNET32_PORT_ASEL) { /* workaround of xSeries250, turn on for 79C975 only */ - i = ((lp->a.read_csr(ioaddr, 88) | - (lp->a. - read_csr(ioaddr, 89) << 16)) >> 12) & 0xffff; - if (i == 0x2627) + if (lp->chip_version == 0x2627) val |= 3; } lp->a.write_bcr(ioaddr, 9, val); @@ -1986,9 +1993,11 @@ static int pcnet32_open(struct net_devic netif_start_queue(dev); - /* Print the link status and start the watchdog */ - pcnet32_check_media(dev, 1); - mod_timer(&(lp->watchdog_timer), PCNET32_WATCHDOG_TIMEOUT); + if (lp->chip_version >= PCNET32_79C970A) { + /* Print the link status and start the watchdog */ + pcnet32_check_media(dev, 1); + mod_timer(&(lp->watchdog_timer), PCNET32_WATCHDOG_TIMEOUT); + } i = 0; while (i++ < 100) -- Don Fry brazilnut@us.ibm.com