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path: root/drivers/net/sky2.c
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2008-01-18Revert "sky2: remove check for PCI wakeup setting from BIOS"Stephen Hemminger
This reverts commit 84cd2dfb04d23a961c5f537baa243fa54d0987ac. Some BIOS's break if Wake On Lan is enabled, and the machine can't boot. Better to have some user's have to call ethtool to enable WOL than to break a single user's boot. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-12sky2: remove check for PCI wakeup setting from BIOSStephen Hemminger
The driver checks status of PCI power management to mark default setting of Wake On Lan. On some systems this works, but often it reports a that WOL is disabled when it isn't. This patch gets rid of that check and just reports the wake on lan status based on the hardware capablity. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-12sky2: large memory workaround.Stephen Hemminger
This patch might fix problems with 4G or more of memory. It stops the driver from doing a small optimization for Tx and Rx, and instead always sets the high-page on tx/rx descriptors. Fixes-bug: http://bugzilla.kernel.org/show_bug.cgi?id=9725 Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-08[NET]: Fix drivers to handle napi_disable() disabling interrupts.David S. Miller
When we add the generic napi_disable_pending() breakout logic to net_rx_action() it means that napi_disable() can cause NAPI poll interrupt events to be disabled. And this is exactly what we want. If a napi_disable() is pending, and we are looping in the ->poll(), we want ->poll() event interrupts to stay disabled and we want to complete the NAPI poll ASAP. When ->poll() break out during device down was being handled on a per-driver basis, often these drivers would turn interrupts back on when '!netif_running()' was detected. And this would just cause a reschedule of the NAPI ->poll() in the interrupt handler before the napi_disable() could get in there and grab the NAPI_STATE_SCHED bit. The vast majority of drivers don't care if napi_disable() might have the side effect of disabling NAPI ->poll() event interrupts. In all such cases, when a napi_disable() is performed, the driver just disabled interrupts or is about to. However there were three exceptions to this in PCNET32, R8169, and SKY2. To fix those cases, at the subsequent napi_enable() points, I added code to ensure that the ->poll() interrupt events are enabled in the hardware. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Don Fry <pcnet32@verizon.net>
2007-12-14sky2: RX lockup fixStephen Hemminger
I'm using a Marvell 88E8062 on a custom PPC64 blade and ran into RX lockups while validating the sky2 driver. The receive MAC FIFO would become stuck during testing with high traffic. One port of the 88E8062 would lockup, while the other port remained functional. Re-inserting the sky2 module would not fix the problem - only a power cycle would. I looked over Marvell's most recent sk98lin driver and it looks like they had a "workaround" for the Yukon XL that the sky2 doesn't have yet. The sk98lin driver disables the RX MAC FIFO flush feature for all revisions of the Yukon XL. According to skgeinit.c of the sk98lin driver, "Flushing must be enabled (needed for ASF see dev. #4.29), but the flushing mask should be disabled (see dev. #4.115)". Nice. I implemented this same change in the sky2 driver and verified that the RX lockup I was seeing was resolved. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04sky2: recovery deadlock fixStephen Hemminger
Prevent deadlock in sky2 recovery logic. sky2_down calls napi_synchronize which gets stuck if napi was already disabled. Fix by rearranging slightly and not calling napi_disable until after both ports are stopped. The napi_disable probably is being overly paranoid, but it is safe now. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-01sky2: turn of dynamic Tx watermark workaround (FE+ only)Stephen Hemminger
Add workaround for issues FE+ (A0) transmit watermark. This is copied verbatim from vendor driver sk98lin (10.22.4.3). Don't have that chip version and no more information seems to be available. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-01sky2: don't use AER routinesStephen Hemminger
Using PCIE advanced error recovery stuff creates more user problems than it's worth. The AER stuff depends on MMCONFIG and in many configurations it just doesn't work. Plus it doesn't add any real functionality to the driver. The sky2 driver handles its own errors fine as is. This reverts 555382cbfc6d2187b53888190755e56f52308cd6 Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-01sky2: revert to access PCI config via device spaceStephen Hemminger
Using the hardware window into PCI config space is more reliable and smaller/faster than using the pci_config routines. It avoids issues with MMCONFIG etc. Reverts: 167f53d05fccb47b6eeadac7f6705b3f2f042d03 Please apply for 2.6.24 Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-11-23sky2: disable rx checksum on Yukon XLStephen Hemminger
The Marvell Yukon XL chipset appears to have a hardware glitch where it will repeat the checksum of the last packet. Of course, this is timing sensitive and only happens sometimes... More info: http://bugzilla.kernel.org/show_bug.cgi?id=9381 As a workaround just disable hardware checksumming by default on this chip version. The earlier workaround for PCIX, dual port was also on Yukon XL so don't need to disable checksumming there. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-11-10sky2: new pci id'sStephen Hemminger
Found a couple of more chips in the latest version of the vendor driver. They are minor variations on existing chips. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-11-10sky2: netpoll on port 0 onlyStephen Hemminger
Netpoll will only work on port 0 because of the restrictive relationship between NAPI and netpoll. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-11-10sky2: version 1.20Stephen Hemminger
Version update to 1.20 Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-11-10sky2: handle advanced error recovery config issuesStephen Hemminger
The PCI AER support may not work for a couple of reasons. It may not be configured into the kernel or there may be a BIOS bug that prevents MMCONFIG from working. If MMCONFIG doesn't work then the PCI registers that control AER will not be accessible via pci_read_config functions; luckly there is another window to access PCI space in the device, so use that. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-11-10sky2: remove unneeded mask updateStephen Hemminger
The IRQ's is already masked on shutdown, and on startup avoid touching PHY until after phy_init(). Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-11-10sky2: dont change LED after autonegStephen Hemminger
Don't need to change LED's after auto negotiation, the chip sets them correctly. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-11-10sky2: longer PHY delayStephen Hemminger
Increse phy delay and handle I/O errors. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-11-10sky2: status ring race fixStephen Hemminger
The D-Link PCI-X board (and maybe others) can lie about status ring entries. It seems it will update the register for last status index before completing the DMA for the ring entry. To avoid reading stale data, zap the old entry and check. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-11-10sky2: enable PCI config writesStephen Hemminger
On some boards, PCI configuration space access is turned off by default. The 2.6.24 driver doesn't turn it on, and should have. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-23sky2: crash on removeStephen Hemminger
Fix off-by one in remove logic that just got introduced. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-18Merge branch 'upstream-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: pcnet32: remove private net_device_stats structure vortex_up should initialize "err" pcnet32: remove compile warnings in non-napi mode pcnet32: fix non-napi packet reception fix EMAC driver for proper napi_synchronize API sky2: shutdown cleanup napi_synchronize: waiting for NAPI forcedeth msi bugfix gianfar: fix obviously wrong #ifdef CONFIG_GFAR_NAPI placement fs_enet: Update for API changes gianfar: remove orphan struct. forcedeth: fix rx-work condition in nv_rx_process_optimized() too
2007-10-18Add missing newlines to some uses of dev_<level> messagesJoe Perches
Found these while looking at printk uses. Add missing newlines to dev_<level> uses Add missing KERN_<level> prefixes to multiline dev_<level>s Fixed a wierd->weird spelling typo Added a newline to a printk Signed-off-by: Joe Perches <joe@perches.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Mark M. Hoffman <mhoffman@lightlink.com> Cc: Roland Dreier <rolandd@cisco.com> Cc: Tilman Schmidt <tilman@imap.cc> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Jeff Garzik <jeff@garzik.org> Cc: Stephen Hemminger <shemminger@linux-foundation.org> Cc: Greg KH <greg@kroah.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Cc: James Smart <James.Smart@Emulex.Com> Cc: Andrew Vasquez <andrew.vasquez@qlogic.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Jaroslav Kysela <perex@suse.cz> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17sky2: shutdown cleanupStephen Hemminger
Solve issues with dual port devices due to shared NAPI. * shutting down one device shouldn't kill other one. * suspend shouldn't hang. Also fix potential race between restart and shutdown. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-14sky2: reboot fixStephen Hemminger
The call to napi_disable() in the PCI shutdown handler is problematic, and is aggravated by the new NAPI. Also, make sure watchdog timer doesn't go off. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-11[SKY2]: version 1.19Stephen Hemminger
Update version to keep track of new changes. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-11[SKY2]: use netdevice stats structStephen Hemminger
Use builtin statistics structure from net device. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-11[SKY2]: fiber advertise bits initialization (trivial)Stephen Hemminger
Put initialization in sequential order (same as other constants). Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-11[SKY2]: fix power settings on Yukon XLStephen Hemminger
Make sure PCI register for PHY power gets set correctly. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-11[SKY2]: ethtool register reserved area blackoutStephen Hemminger
Make sure and not dump reserved areas of device space. Touching some of these causes machine check exceptions on boards like D-Link DGE-550SX. Coding note, used a complex switch statement rather than bitmap because it is easier to relate the block values to the documentation rather than looking at a encoded bitmask. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-11[SKY2]: status polling loop (post merge)Stephen Hemminger
Handle the corner case where budget is exhausted correctly. And save unnecessary read of index register. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-11[NET]: Fix NAPI completion handling in some drivers.David S. Miller
In order for the list handling in net_rx_action() to be correct, drivers must follow certain rules as stated by this comment in net_rx_action(): /* Drivers must not modify the NAPI state if they * consume the entire weight. In such cases this code * still "owns" the NAPI instance and therefore can * move the instance around on the list at-will. */ A few drivers do not do this because they mix the budget checks with reading hardware state, resulting in crashes like the one reported by takano@axe-inc.co.jp. BNX2 and TG3 are taken care of here, SKY2 fix is from Stephen Hemminger. Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10[netdrvr] Stop using legacy hooks ->self_test_count, ->get_stats_countJeff Garzik
These have been superceded by the new ->get_sset_count() hook. Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10[NET]: Introduce and use print_mac() and DECLARE_MAC_BUF()Joe Perches
This is nicer than the MAC_FMT stuff. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10[ETHTOOL] Provide default behaviors for a few ethtool sub-ioctlsJeff Garzik
For the operations get-tx-csum get-sg get-tso get-ufo the default ethtool_op_xxx behavior is fine for all drivers, so we permit op==NULL to imply the default behavior. This provides a more uniform behavior across all drivers, eliminating ethtool(8) "ioctl not supported" errors on older drivers that had not been updated for the latest sub-ioctls. The ethtool_op_xxx() functions are left exported, in case anyone wishes to call them directly from a driver-private implementation -- a not-uncommon case. Should an ethtool_op_xxx() helper remain unused for a while, except by net/core/ethtool.c, we can un-export it at a later date. [ Resolved conflicts with set/get value ethtool patch... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10[NET]: Nuke SET_MODULE_OWNER macro.Ralf Baechle
It's been a useless no-op for long enough in 2.6 so I figured it's time to remove it. The number of people that could object because they're maintaining unified 2.4 and 2.6 drivers is probably rather small. [ Handled drivers added by netdev tree and some missed IRDA cases... -DaveM ] Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10sky2: use pci_config access functionsStephen Hemminger
Use the PCI layer config access functions. The driver was using the memory mapped window in device, to workaround issues accessing the advanced error reporting registers. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10sky2: advanced error reportingStephen Hemminger
Use the kernel interfaces for advanced error reporting. This should be cleaner and clear up errors on boot. For those systems with busted BIOS's that don't correctly support mmconfig, advanced error reporting will be disabled. The PCI registers for advanced error reporting start at 0x100 which is too large to be accessed by legacy functions. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10sky2: dont restrict config space accessStephen Hemminger
Take out the code that protects driver from accessing the PCI config space. We are old enough to run with scissors now. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10sky2: use debugfs renameStephen Hemminger
Use debugfs rename to handle device neame changes. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10[NET]: Make NAPI polling independent of struct net_device objects.Stephen Hemminger
Several devices have multiple independant RX queues per net device, and some have a single interrupt doorbell for several queues. In either case, it's easier to support layouts like that if the structure representing the poll is independant from the net device itself. The signature of the ->poll() call back goes from: int foo_poll(struct net_device *dev, int *budget) to int foo_poll(struct napi_struct *napi, int budget) The caller is returned the number of RX packets processed (or the number of "NAPI credits" consumed if you want to get abstract). The callee no longer messes around bumping dev->quota, *budget, etc. because that is all handled in the caller upon return. The napi_struct is to be embedded in the device driver private data structures. Furthermore, it is the driver's responsibility to disable all NAPI instances in it's ->stop() device close handler. Since the napi_struct is privatized into the driver's private data structures, only the driver knows how to get at all of the napi_struct instances it may have per-device. With lots of help and suggestions from Rusty Russell, Roland Dreier, Michael Chan, Jeff Garzik, and Jamal Hadi Salim. Bug fixes from Thomas Graf, Roland Dreier, Peter Zijlstra, Joseph Fannin, Scott Wood, Hans J. Koch, and Michael Chan. [ Ported to current tree and all drivers converted. Integrated Stephen's follow-on kerneldoc additions, and restored poll_list handling to the old style to fix mutual exclusion issues. -DaveM ] Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-03sky2: jumbo frame regression fixStephen Hemminger
Remove unneeded check that caused problems with jumbo frame sizes. The check was recently added and is wrong. When using jumbo frames the sky2 driver does fragmentation, so rx_data_size is less than mtu. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-09-27sky2: fix transmit state on resumeStephen Hemminger
This should fix http://bugzilla.kernel.org/show_bug.cgi?id=8667 After resume, driver has reset the chip so the current state of transmit checksum offload state machine and DMA state machine will be undefined. The fix is to set the state so that first Tx will set MSS and offset values. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-09-27sky2: FE+ vlan workaroundStephen Hemminger
The FE+ workaround means the driver can no longer trust the status register to indicate VLAN tagged frames. The fix for this is to just disable VLAN acceleration for that chip version. Tested and works fine. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-09-27sky2: sky2 FE+ receive status workaroundStephen Hemminger
The Yukon FE+ chip appears to have a hardware glitch that causes bogus receive status values to be posted. The data in the packet is good, but the status value is random garbage. As a temporary workaround until the problem is better understood, implement the workaround the vendor driver used of ignoring the status value on this chip. Since this means trusting dodgy hardware values; add additional checking of the receive packet length. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-09-25sky2: be more selective about FIFO watchdogStephen Hemminger
Be more selective about when to enable the ram buffer watchdog code. It is unnecessary on XL A3 or later revs, and with Yukon FE the buffer is so small (4K) that the watchdog detects false positives. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-09-25sky2: FE+ Phy initializationStephen Hemminger
One more snippet of PHY initialization required for FE+ chips. Discovered in latest sk98lin 10.21.1.3 driver. Please apply to 2.6.23. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-09-20sky2: version 1.18Stephen Hemminger
Update version number Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-09-20sky2: receive FIFO checkingStephen Hemminger
A driver writer from another operating system hinted that the versions of Yukon 2 chip with rambuffer (EC and XL) have a hardware bug that if the FIFO ever gets completely full it will hang. Sounds like a classic ring full vs ring empty wrap around bug. As a workaround, use the existing watchdog timer to check for ring full lockup. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-09-20sky2: fe+ chip supportStephen Hemminger
Add support for newest Marvell chips. The Yukon FE plus chip is found in some not yet released laptops. Tested on hardware evaluation boards. This version of the patch is for 2.6.23. It supersedes the two previous patches that are sitting in netdev-2.6 (upstream branch). Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-09-20sky2: reorganize chip revision featuresStephen Hemminger
This patch should cause no functional changes in driver behaviour. There are (too) many revisions of the Yukon 2 chip now. Instead of adding more conditionals based on chip revision; rerganize into a set of feature flags so adding new versions is less problematic. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>