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* [TCP]: SNMPv2 tcpAttemptFails counter errorWei Yongjun2006-08-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Refer to RFC2012, tcpAttemptFails is defined as following: tcpAttemptFails OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of times TCP connections have made a direct transition to the CLOSED state from either the SYN-SENT state or the SYN-RCVD state, plus the number of times TCP connections have made a direct transition to the LISTEN state from the SYN-RCVD state." ::= { tcp 7 } When I lookup into RFC793, I found that the state change should occured under following condition: 1. SYN-SENT -> CLOSED a) Received ACK,RST segment when SYN-SENT state. 2. SYN-RCVD -> CLOSED b) Received SYN segment when SYN-RCVD state(came from LISTEN). c) Received RST segment when SYN-RCVD state(came from SYN-SENT). d) Received SYN segment when SYN-RCVD state(came from SYN-SENT). 3. SYN-RCVD -> LISTEN e) Received RST segment when SYN-RCVD state(came from LISTEN). In my test, those direct state transition can not be counted to tcpAttemptFails. Signed-off-by: Wei Yongjun <yjwei@nanjing-fnst.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: fix memory leak in net/ipv4/tcp_probe.c::tcpprobe_read()James Morris2006-08-02
| | | | | | | | | Based upon a patch by Jesper Juhl. Signed-off-by: James Morris <jmorris@namei.org> Acked-by: Stephen Hemminger <shemminger@osdl.org> Acked-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [ATALK]: Make CONFIG_DEV_APPLETALK a tristate.David S. Miller2006-08-02
| | | | | | | | | | | Otherwise we allow building appletalk drivers in-kernel when CONFIG_ATALK is modular. That doesn't work because these drivers use symbols such as "alloc_talkdev" which is exported from code built by CONFIG_ATALK. Noticed by Toralf Förster. Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Fix ___pskb_trim when entire frag_list needs droppingHerbert Xu2006-08-02
| | | | | | | | | | | | | When the trim point is within the head and there is no paged data, ___pskb_trim fails to drop the first element in the frag_list. This patch fixes this by moving the len <= offset case out of the page data loop. This patch also adds a missing kfree_skb on the frag that we just cloned. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: include/linux/netfilter_bridge.h: header cleanupAlexey Dobriyan2006-08-02
| | | | | | | | | | | | | | Header doesn't use anything from atomic.h. It fixes headers_check warning: include/linux/netfilter_bridge.h requires asm/atomic.h, which does not exist Compile tested on alpha arm i386-up sparc sparc64-up x86_64 alpha-up i386 sparc64 sparc-up x86_64-up Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: Audit all ip6_dst_lookup/ip6_dst_store callsHerbert Xu2006-08-02
| | | | | | | | | | | | | | | | | | | The current users of ip6_dst_lookup can be divided into two classes: 1) The caller holds no locks and is in user-context (UDP). 2) The caller does not want to lookup the dst cache at all. The second class covers everyone except UDP because most people do the cache lookup directly before calling ip6_dst_lookup. This patch adds ip6_sk_dst_lookup for the first class. Similarly ip6_dst_store users can be divded into those that need to take the socket dst lock and those that don't. This patch adds __ip6_dst_store for those (everyone except UDP/datagram) that don't need an extra lock. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM]: Fix protocol field value for outgoing IPv6 GSO packetsPatrick McHardy2006-08-02
| | | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6] ADDRCONF: NLM_F_REPLACE support for RTM_NEWADDRNoriaki TAKAMIYA2006-08-02
| | | | | | | Based on MIPL2 kernel patch. Signed-off-by: Noriaki YAKAMIYA <takamiya@po.ntts.co.jp> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
* [IPV6] ADDRCONF: Support get operation of single addressNoriaki TAKAMIYA2006-08-02
| | | | | | | Based on MIPL2 kernel patch. Signed-off-by: Noriaki TAKAMIYA <takamiya@po.ntts.co.jp> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
* [IPV6] ADDRCONF: Do not verify an address with infinity lifetimeYOSHIFUJI Hideaki2006-08-02
| | | | | | | We also do not try regenarating new temporary address corresponding to an address with infinite preferred lifetime. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
* [IPV6] ADDRCONF: Allow user-space to specify address lifetimeNoriaki TAKAMIYA2006-08-02
| | | | | | | Based on MIPL2 kernel patch. Signed-off-by: Noriaki TAKAMIYA <takamiya@po.ntts.co.jp> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
* [IPV6] ADDRCONF: Check payload length for IFA_LOCAL attribute in ↵YOSHIFUJI Hideaki2006-08-02
| | | | | | RTM_{ADD,DEL}MSG message Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvbLinus Torvalds2006-08-02
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (26 commits) V4L/DVB (4380): Bttv: Revert VBI_OFFSET to previous value, it works better V4L/DVB (4379): Videodev: Check return value of class_device_register() correctly V4L/DVB (4373): Correctly handle sysfs error leg file removal in pvrusb2 V4L/DVB (4368): Bttv: use class_device_create_file and handle errors V4L/DVB (4367): Videodev: Handle class_device related errors V4L/DVB (4365): OVERLAY flag were enabled by mistake V4L/DVB (4344): Fix broken dependencies on media Kconfig V4L/DVB (4343): Fix for compilation without V4L1 or V4L1_COMPAT V4L/DVB (4342): Fix ext_controls align on 64 bit architectures V4L/DVB (4341): VIDIOCSMICROCODE were missing on compat_ioctl32 V4L/DVB (4322): Fix dvb-pll autoprobing V4L/DVB (4311): Fix possible dvb-pll oops V4L/DVB (4337): Refine dead code elimination in pvrusb2 V4L/DVB (4323): [budget/budget-av/budget-ci/budget-patch drivers] fixed DMA start/stop code V4L/DVB (4316): Check __must_check warnings V4L/DVB (4314): Set the Auxiliary Byte when tuning LG H06xF in analog mode V4L/DVB (4313): Bugfix for keycode calculation on NPG remotes V4L/DVB (4310): Saa7134: rename dmasound_{init, exit} V4L/DVB (4306): Support non interlaced capture by default for saa713x V4L/DVB (4298): Check all __must_check warnings in bttv. ...
| * V4L/DVB (4380): Bttv: Revert VBI_OFFSET to previous value, it works betterTrent Piepho2006-07-29
| | | | | | | | | | | | | | | | | | | | | | A previous patch changed VBI_OFFSET to match what the datasheets say it should be. However, the bt8x8 datasheets are wrong. The old value of 244 is closer to what is actually observed. The real value appears to not be constant and is different for different chip revisions. Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4379): Videodev: Check return value of class_device_register() ↵Trent Piepho2006-07-29
| | | | | | | | | | | | | | | | | | correctly Errors are return values < 0, not != 0. Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4373): Correctly handle sysfs error leg file removal in pvrusb2Mike Isely2006-07-29
| | | | | | | | | | | | | | | | | | Take note of which sysfs files / groups that the pvrusb2 successfully creates and only delete those specific items when tearing things down. (Previously we just blindly tore everything down every time.) Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4368): Bttv: use class_device_create_file and handle errorsTrent Piepho2006-07-29
| | | | | | | | | | | | | | | | | | | | | | Revert bttv-driver.c from video_device_create_file() to use class_device_create_file() again. video_device_create_file() is only available when V4L1 is on. Proper error checking is added for failure of class_device_create_file(). Will print error message and unroll partially created sysfs entries. Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4367): Videodev: Handle class_device related errorsTrent Piepho2006-07-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add proper error checking and roll-back for failure of class_device_create_file() in videodev.c. Print error messages and unroll partially created sysfs entries. Also, failure of class_device_register() in video_register_device() is handled correctly. It was failing to de-allocate the minor number. This must be done in video_register_device(), since the caller has no way of knowing if failure occurred before or after the class device was registered. Also added an error message if video_register_device() is called with an unknown type, which should never happen. Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4365): OVERLAY flag were enabled by mistakeMauro Carvalho Chehab2006-07-29
| | | | | | | | | | | | | | | | | | | | | | A patch from Aug, 17 activated by mistake OVERLAY flag on cx88-video, together with several cx88-blackbird cleanups. This makes the cx88 driver to report: /dev/video0 [v4l2]: ioctl VIDIOC_G_FBUF: Invalid argument instead of: /dev/video0 [v4l2]: no overlay support Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4344): Fix broken dependencies on media Kconfig Mauro Carvalho Chehab2006-07-29
| | | | | | | | Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4343): Fix for compilation without V4L1 or V4L1_COMPATMauro Carvalho Chehab2006-07-29
| | | | | | | | | | | | | | | | Removed usage of HAVE_V4L1 Including videodev.h will just include videodev2.h if V4L1 is not supported V4L1 code at core drivers will honor CONFIG_V4L1_COMPAT stuff Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4342): Fix ext_controls align on 64 bit architecturesMauro Carvalho Chehab2006-07-29
| | | | | | | | | | | | | | | | | | u64 is aligned as 128bits on x86_64 architetures, requiring an special handling to ioctls that depends on v4l2_ext_control. Let's fix this before ext controls go to kernel mainstream to avoid one more compat32 stuff. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4341): VIDIOCSMICROCODE were missing on compat_ioctl32Mauro Carvalho Chehab2006-07-29
| | | | | | | | | | | | | | | | video_code size is 24 on i386 and 32 on x86_64, so a proper handling is needed on compat_ioctl32 to fix it. This code should be tested, since just *a few* boards use this ioctl. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4322): Fix dvb-pll autoprobingAndrew de Quincey2006-07-29
| | | | | | | | | | | | | | | | | | Trent Piepho pointed out that the pll test i2c transmission is slightly wrong; it was transmitting a zero length message, and then reading from the PLL. This was wrong; it should only be transmitting a single read i2c message. Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4311): Fix possible dvb-pll oopsAndrew de Quincey2006-07-29
| | | | | | | | | | | | | | | | | | Supplying a NULL i2c adapter to dvb_pll_attach is allowed, for example with mt352 demods. However, the pll i2c probe will segfault because it does not check for this. Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4337): Refine dead code elimination in pvrusb2Mike Isely2006-07-29
| | | | | | | | | | Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4323): [budget/budget-av/budget-ci/budget-patch drivers] fixed DMA ↵Oliver Endriss2006-07-29
| | | | | | | | | | | | | | | | | | | | | | | | | | start/stop code Fix bug reported by Andrew de Quincey: After cold boot the saa7146 DMA did not start if the demuxer was opened before the frontend has locked to the signal. DMA transfers will be started now if (and only if) the frontend is locked and data should be sent to the demuxer. Signed-off-by: Oliver Endriss <o.endriss@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4316): Check __must_check warningsMichael Krufky2006-07-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Check __must_check warnings for class_device_register and class_device_create_file video_device_create_file was declared as a void, but instead should return the int value of class_device_create_file. Move the check from bttv-driver.c into v4l2-dev.h, because all other callers of video_device_create_file must also be checked. Replace the call to class_device_create_file in videodev.c with video_device_create_file, as defined in v4l2-dev.h, so that the return value of class_device_create_file will be checked. Check the return value of class_device_register in videodev.c and pvrusb2-sysfs.c Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4314): Set the Auxiliary Byte when tuning LG H06xF in analog modeMichael Krufky2006-07-29
| | | | | | | | | | | | | | | | | | | | | | With the LG H06xF tuners, an auxiliary byte must be sent after the standard four-byte i2c sequence. The code that does this is currently in the wrong place, causing random bytes to be written to the tuner over i2c in the set_type function. This patch moves this code from set_type to default_set_tv_freq. Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4313): Bugfix for keycode calculation on NPG remotesRicardo Cerqueira2006-07-29
| | | | | | | | | | | | | | | | Fix keycode calculations (all codes for this remote were wrong due to a lost + sign) Signed-off-by: Ricardo Cerqueira <v4l@cerqueira.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4310): Saa7134: rename dmasound_{init, exit}Adrian Bunk2006-07-29
| | | | | | | | | | | | | | | | | | | | | | | | | | Two different exports with the same name are not a good idea: $ grep -r EXPORT_SYMBOL\(dmasound_init\) * drivers/media/video/saa7134/saa7134-core.c:EXPORT_SYMBOL(dmasound_init); sound/oss/dmasound/dmasound_core.c:EXPORT_SYMBOL(dmasound_init); $ This patch renames the saa7134 dmasound_{init,exit} to saa7134_dmasound_{init,exit}. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4306): Support non interlaced capture by default for saa713xHartmut Hackmann2006-07-29
| | | | | | | | | | | | | | | | | | This patch just sets the option noninterlaced to 1 by default since it has no known disadvantages. It is still possibe to get the old behaviour by setting noninterlaced=0. Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4298): Check all __must_check warnings in bttv.Randy Dunlap2006-07-29
| | | | | | | | | | Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4296): Remove stradis MODULE_DEVICE_INFO definitionAndrew de Quincey2006-07-29
| | | | | | | | | | | | | | | | To prevent autoloading of the driver, as it then conflicts with every other saa7146 device in existence. Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4295): Fix typo in comment for TDA9819Marco Schluessler2006-07-29
| | | | | | | | | | | | | | | | Fix typo in comment for TDA9819 Signed-off-by: Marco Schluessler <marco@lordzodiac.de> Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4294): Fix broken tda665x PLL definition.Andrew de Quincey2006-07-29
| | | | | | | | | | | | | | | | | | It was pointed out on the mailing list that this PLL definition is broken. I went back to the original dibusb driver and confirmed it used to use these settings, as well as consulting the datasheet. Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4293): Fix unstable DISEQC behaviour on budget cards.Andrew de Quincey2006-07-29
| | | | | | | | | | | | | | | | | | Use the stv0299 native DISEQC implementation instead of the bitbanging one as required by the ves1893. This was originally found by Oliver Endriss. Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Signed-off-by: Oliver Endriss <o.endriss@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4292): Fix DISEQC regressionAndrew de Quincey2006-07-29
| | | | | | | | | | | | | | | | | | | | | | The changes to add frontend reinitialisation moved the position where the init() op is called into the frontend thread. Unfortunately, since DISEQC operations do not use the frontend thread, this meant that DISEQC could be called against an uninitalised frontend, leading to all sorts of trouble. Patch fixes this by reinstating the original fronted intialisation call. Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * V4L/DVB (4291): Add dvbpll i2c device check.Andrew de Quincey2006-07-29
| | | | | | | | | | | | | | | | | | | | | | Some cards have multiple possible addresses for their PLLs, with no other way to tell if a PLL is present or not apart from probing to see if an i2c device is present. This adds a quick check to see if an i2c device is present at the given i2c address. Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> Acked-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* | Merge branch 'merge' of ↵Linus Torvalds2006-07-31
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] Minor comment fix for misc_64.S [POWERPC] Use H_CEDE on non-SMT [POWERPC] force 64bit mode in fwnmi handlers to workaround firmware bugs [POWERPC] PMAC_APM_EMU should depend on ADB_PMU [POWERPC] Fix new interrupt code (MPIC detection) [POWERPC] Fix new interrupt code (MPIC endianness) [POWERPC] Add cpufreq support for Xserve G5 [POWERPC] Xserve G5 thermal control fixes [POWERPC] Fix mem= handling when the memory limit is > RMO size [POWERPC] More offb/bootx fixes [POWERPC] Fix legacy_serial.c error handling on 32 bits [POWERPC] Fix default clock for udbg_16550 [POWERPC] Fix non-MPIC CHRPs with CONFIG_SMP set [POWERPC] Fix 32 bits warning in prom_init.c [POWERPC] Workaround Pegasos incorrect ISA "ranges" [POWERPC] fix up front-LED Kconfig
| * | [POWERPC] Minor comment fix for misc_64.SGeoff Levand2006-07-31
| | | | | | | | | | | | | | | | | | | | | A minor comment fix for misc_64.S from Takao Shinohara. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Use H_CEDE on non-SMTJake Moilanen2006-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On the JS21 systems, they have the SPLPAR hypertas set, but are not SMT capable. So, they are not making the H_CEDE call. This is causing the hypervisor to have to queue up work for the hdecr, taking an excessive amount of time in maintenance code, and causing jitter on the box. Making the H_CEDE call helps alleviate that problem. Signed-off-by: Jake Moilanen <moilanen@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] force 64bit mode in fwnmi handlers to workaround firmware bugsOlaf Hering2006-07-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The firmware of POWER4 and JS20 systems does not switch the cpu to 64bit mode when the registered system_reset and machine_check handlers get called. If a 32bit process runs on that cpu at the time of the event, the cpu remains in 32bit mode. xmon and kdump can not deal with it, the result is an error like 'Bad kernel stack pointer fff2aad0 at 3200'. xmon just loses some register info, but booting the kdump kernel usually fails. Both handlers are not hot paths. Duplicate the EXCEPTION_PROLOG_PSERIES macro and add two instructions to switch to 64bit: li r11,5; rldimi r10,r11,61,0; Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] PMAC_APM_EMU should depend on ADB_PMUDanny van Dyk2006-07-27
| | | | | | | | | | | | | | | | | | | | | | | | This patch fixes undefined refereneces to pmu_ symbols on 2.6.17. Signed-Off-By: Danny van Dyk <kugelfang@gentoo.org> Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Fix new interrupt code (MPIC detection)Segher Boessenkool2006-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | As the code comment already says, the Maple device-tree is incorrect here; make the Linux code detect the correct thing, too. Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Fix new interrupt code (MPIC endianness)Segher Boessenkool2006-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | All U3/U4 based systems are big-endian, not all express it in their device trees. Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Add cpufreq support for Xserve G5Benjamin Herrenschmidt2006-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Xserve G5 are capable of frequency switching like other desktop G5s. This enables it. It also fix a Kconfig issue which prevented from building the G5 cpufreq support if CONFIG_PMAC_SMU was not set (the first version of that driver only worked with SMU based macs, but this isn't the case anymore). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Xserve G5 thermal control fixesBenjamin Herrenschmidt2006-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The thermal control for the Xserve G5s had a few issues. For one, the way to program the RPM fans speeds into the FCU is different between it and the desktop models, which I didn't figure out until recently, and it was missing a control loop for the slots fan, running it too fast. Both of those problems were causing the machine to be much more noisy than necessary. This patch also changes the fixed value of the slots fan for desktop G5s to 40% instead of 50%. It seems to still have a pretty good airflow that way and is much less noisy. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Fix mem= handling when the memory limit is > RMO sizeMichael Ellerman2006-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There's a bug in my cleaned up mem= handling, if the memory limit is larger than the RMO size we'll erroneously enlarge the RMO size. Fix is to only change the RMO size if the memory limit is less than the current RMO value. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] More offb/bootx fixesBenjamin Herrenschmidt2006-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There were still some issues with offb when BootX doesn't provide a proper display node, this fixes them. This also re-instates the palette hacks that were disabled a couple of kernel versions ago when I converted to the new OF parsing, and shuffles some functions around to avoid prototypes. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-10 14:21:08 -0400
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/*************************************************************************
 * myri10ge.c: Myricom Myri-10G Ethernet driver.
 *
 * Copyright (C) 2005 - 2009 Myricom, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of Myricom, Inc. nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 *
 * If the eeprom on your board is not recent enough, you will need to get a
 * newer firmware image at:
 *   http://www.myri.com/scs/download-Myri10GE.html
 *
 * Contact Information:
 *   <help@myri.com>
 *   Myricom, Inc., 325N Santa Anita Avenue, Arcadia, CA 91006
 *************************************************************************/

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/tcp.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/string.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/etherdevice.h>
#include <linux/if_ether.h>
#include <linux/if_vlan.h>
#include <linux/inet_lro.h>
#include <linux/dca.h>
#include <linux/ip.h>
#include <linux/inet.h>
#include <linux/in.h>
#include <linux/ethtool.h>
#include <linux/firmware.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/vmalloc.h>
#include <linux/crc32.h>
#include <linux/moduleparam.h>
#include <linux/io.h>
#include <linux/log2.h>
#include <linux/slab.h>
#include <net/checksum.h>
#include <net/ip.h>
#include <net/tcp.h>
#include <asm/byteorder.h>
#include <asm/io.h>
#include <asm/processor.h>
#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif

#include "myri10ge_mcp.h"
#include "myri10ge_mcp_gen_header.h"

#define MYRI10GE_VERSION_STR "1.5.2-1.459"

MODULE_DESCRIPTION("Myricom 10G driver (10GbE)");
MODULE_AUTHOR("Maintainer: help@myri.com");
MODULE_VERSION(MYRI10GE_VERSION_STR);
MODULE_LICENSE("Dual BSD/GPL");

#define MYRI10GE_MAX_ETHER_MTU 9014

#define MYRI10GE_ETH_STOPPED 0
#define MYRI10GE_ETH_STOPPING 1
#define MYRI10GE_ETH_STARTING 2
#define MYRI10GE_ETH_RUNNING 3
#define MYRI10GE_ETH_OPEN_FAILED 4

#define MYRI10GE_EEPROM_STRINGS_SIZE 256
#define MYRI10GE_MAX_SEND_DESC_TSO ((65536 / 2048) * 2)
#define MYRI10GE_MAX_LRO_DESCRIPTORS 8
#define MYRI10GE_LRO_MAX_PKTS 64

#define MYRI10GE_NO_CONFIRM_DATA htonl(0xffffffff)
#define MYRI10GE_NO_RESPONSE_RESULT 0xffffffff

#define MYRI10GE_ALLOC_ORDER 0
#define MYRI10GE_ALLOC_SIZE ((1 << MYRI10GE_ALLOC_ORDER) * PAGE_SIZE)
#define MYRI10GE_MAX_FRAGS_PER_FRAME (MYRI10GE_MAX_ETHER_MTU/MYRI10GE_ALLOC_SIZE + 1)

#define MYRI10GE_MAX_SLICES 32

struct myri10ge_rx_buffer_state {
	struct page *page;
	int page_offset;
	DEFINE_DMA_UNMAP_ADDR(bus);
	DEFINE_DMA_UNMAP_LEN(len);
};

struct myri10ge_tx_buffer_state {
	struct sk_buff *skb;
	int last;
	DEFINE_DMA_UNMAP_ADDR(bus);
	DEFINE_DMA_UNMAP_LEN(len);
};

struct myri10ge_cmd {
	u32 data0;
	u32 data1;
	u32 data2;
};

struct myri10ge_rx_buf {
	struct mcp_kreq_ether_recv __iomem *lanai;	/* lanai ptr for recv ring */
	struct mcp_kreq_ether_recv *shadow;	/* host shadow of recv ring */
	struct myri10ge_rx_buffer_state *info;
	struct page *page;
	dma_addr_t bus;
	int page_offset;
	int cnt;
	int fill_cnt;
	int alloc_fail;
	int mask;		/* number of rx slots -1 */
	int watchdog_needed;
};

struct myri10ge_tx_buf {
	struct mcp_kreq_ether_send __iomem *lanai;	/* lanai ptr for sendq */
	__be32 __iomem *send_go;	/* "go" doorbell ptr */
	__be32 __iomem *send_stop;	/* "stop" doorbell ptr */
	struct mcp_kreq_ether_send *req_list;	/* host shadow of sendq */
	char *req_bytes;
	struct myri10ge_tx_buffer_state *info;
	int mask;		/* number of transmit slots -1  */
	int req ____cacheline_aligned;	/* transmit slots submitted     */
	int pkt_start;		/* packets started */
	int stop_queue;
	int linearized;
	int done ____cacheline_aligned;	/* transmit slots completed     */
	int pkt_done;		/* packets completed */
	int wake_queue;
	int queue_active;
};

struct myri10ge_rx_done {
	struct mcp_slot *entry;
	dma_addr_t bus;
	int cnt;
	int idx;
	struct net_lro_mgr lro_mgr;
	struct net_lro_desc lro_desc[MYRI10GE_MAX_LRO_DESCRIPTORS];
};

struct myri10ge_slice_netstats {
	unsigned long rx_packets;
	unsigned long tx_packets;
	unsigned long rx_bytes;
	unsigned long tx_bytes;
	unsigned long rx_dropped;
	unsigned long tx_dropped;
};

struct myri10ge_slice_state {
	struct myri10ge_tx_buf tx;	/* transmit ring        */
	struct myri10ge_rx_buf rx_small;
	struct myri10ge_rx_buf rx_big;
	struct myri10ge_rx_done rx_done;
	struct net_device *dev;
	struct napi_struct napi;
	struct myri10ge_priv *mgp;
	struct myri10ge_slice_netstats stats;
	__be32 __iomem *irq_claim;
	struct mcp_irq_data *fw_stats;
	dma_addr_t fw_stats_bus;
	int watchdog_tx_done;
	int watchdog_tx_req;
	int watchdog_rx_done;
#ifdef CONFIG_MYRI10GE_DCA
	int cached_dca_tag;
	int cpu;
	__be32 __iomem *dca_tag;
#endif
	char irq_desc[32];
};

struct myri10ge_priv {
	struct myri10ge_slice_state *ss;
	int tx_boundary;	/* boundary transmits cannot cross */
	int num_slices;
	int running;		/* running?             */
	int csum_flag;		/* rx_csums?            */
	int small_bytes;
	int big_bytes;
	int max_intr_slots;
	struct net_device *dev;
	spinlock_t stats_lock;
	u8 __iomem *sram;
	int sram_size;
	unsigned long board_span;
	unsigned long iomem_base;
	__be32 __iomem *irq_deassert;
	char *mac_addr_string;
	struct mcp_cmd_response *cmd;
	dma_addr_t cmd_bus;
	struct pci_dev *pdev;
	int msi_enabled;
	int msix_enabled;
	struct msix_entry *msix_vectors;
#ifdef CONFIG_MYRI10GE_DCA
	int dca_enabled;
	int relaxed_order;
#endif
	u32 link_state;
	unsigned int rdma_tags_available;
	int intr_coal_delay;
	__be32 __iomem *intr_coal_delay_ptr;
	int mtrr;
	int wc_enabled;
	int down_cnt;
	wait_queue_head_t down_wq;
	struct work_struct watchdog_work;
	struct timer_list watchdog_timer;
	int watchdog_resets;
	int watchdog_pause;
	int pause;
	bool fw_name_allocated;
	char *fw_name;
	char eeprom_strings[MYRI10GE_EEPROM_STRINGS_SIZE];
	char *product_code_string;
	char fw_version[128];
	int fw_ver_major;
	int fw_ver_minor;
	int fw_ver_tiny;
	int adopted_rx_filter_bug;
	u8 mac_addr[6];		/* eeprom mac address */
	unsigned long serial_number;
	int vendor_specific_offset;
	int fw_multicast_support;
	unsigned long features;
	u32 max_tso6;
	u32 read_dma;
	u32 write_dma;
	u32 read_write_dma;
	u32 link_changes;
	u32 msg_enable;
	unsigned int board_number;
	int rebooted;
};

static char *myri10ge_fw_unaligned = "myri10ge_ethp_z8e.dat";
static char *myri10ge_fw_aligned = "myri10ge_eth_z8e.dat";
static char *myri10ge_fw_rss_unaligned = "myri10ge_rss_ethp_z8e.dat";
static char *myri10ge_fw_rss_aligned = "myri10ge_rss_eth_z8e.dat";
MODULE_FIRMWARE("myri10ge_ethp_z8e.dat");
MODULE_FIRMWARE("myri10ge_eth_z8e.dat");
MODULE_FIRMWARE("myri10ge_rss_ethp_z8e.dat");
MODULE_FIRMWARE("myri10ge_rss_eth_z8e.dat");

/* Careful: must be accessed under kparam_block_sysfs_write */
static char *myri10ge_fw_name = NULL;
module_param(myri10ge_fw_name, charp, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(myri10ge_fw_name, "Firmware image name");

#define MYRI10GE_MAX_BOARDS 8
static char *myri10ge_fw_names[MYRI10GE_MAX_BOARDS] =
    {[0 ... (MYRI10GE_MAX_BOARDS - 1)] = NULL };
module_param_array_named(myri10ge_fw_names, myri10ge_fw_names, charp, NULL,
			 0444);
MODULE_PARM_DESC(myri10ge_fw_name, "Firmware image names per board");

static int myri10ge_ecrc_enable = 1;
module_param(myri10ge_ecrc_enable, int, S_IRUGO);
MODULE_PARM_DESC(myri10ge_ecrc_enable, "Enable Extended CRC on PCI-E");

static int myri10ge_small_bytes = -1;	/* -1 == auto */
module_param(myri10ge_small_bytes, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(myri10ge_small_bytes, "Threshold of small packets");

static int myri10ge_msi = 1;	/* enable msi by default */
module_param(myri10ge_msi, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(myri10ge_msi, "Enable Message Signalled Interrupts");

static int myri10ge_intr_coal_delay = 75;
module_param(myri10ge_intr_coal_delay, int, S_IRUGO);
MODULE_PARM_DESC(myri10ge_intr_coal_delay, "Interrupt coalescing delay");

static int myri10ge_flow_control = 1;
module_param(myri10ge_flow_control, int, S_IRUGO);
MODULE_PARM_DESC(myri10ge_flow_control, "Pause parameter");

static int myri10ge_deassert_wait = 1;
module_param(myri10ge_deassert_wait, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(myri10ge_deassert_wait,
		 "Wait when deasserting legacy interrupts");

static int myri10ge_force_firmware = 0;
module_param(myri10ge_force_firmware, int, S_IRUGO);
MODULE_PARM_DESC(myri10ge_force_firmware,
		 "Force firmware to assume aligned completions");

static int myri10ge_initial_mtu = MYRI10GE_MAX_ETHER_MTU - ETH_HLEN;
module_param(myri10ge_initial_mtu, int, S_IRUGO);
MODULE_PARM_DESC(myri10ge_initial_mtu, "Initial MTU");

static int myri10ge_napi_weight = 64;
module_param(myri10ge_napi_weight, int, S_IRUGO);
MODULE_PARM_DESC(myri10ge_napi_weight, "Set NAPI weight");

static int myri10ge_watchdog_timeout = 1;
module_param(myri10ge_watchdog_timeout, int, S_IRUGO);
MODULE_PARM_DESC(myri10ge_watchdog_timeout, "Set watchdog timeout");

static int myri10ge_max_irq_loops = 1048576;
module_param(myri10ge_max_irq_loops, int, S_IRUGO);
MODULE_PARM_DESC(myri10ge_max_irq_loops,
		 "Set stuck legacy IRQ detection threshold");

#define MYRI10GE_MSG_DEFAULT NETIF_MSG_LINK

static int myri10ge_debug = -1;	/* defaults above */
module_param(myri10ge_debug, int, 0);
MODULE_PARM_DESC(myri10ge_debug, "Debug level (0=none,...,16=all)");

static int myri10ge_lro_max_pkts = MYRI10GE_LRO_MAX_PKTS;
module_param(myri10ge_lro_max_pkts, int, S_IRUGO);
MODULE_PARM_DESC(myri10ge_lro_max_pkts,
		 "Number of LRO packets to be aggregated");

static int myri10ge_fill_thresh = 256;
module_param(myri10ge_fill_thresh, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(myri10ge_fill_thresh, "Number of empty rx slots allowed");

static int myri10ge_reset_recover = 1;

static int myri10ge_max_slices = 1;
module_param(myri10ge_max_slices, int, S_IRUGO);
MODULE_PARM_DESC(myri10ge_max_slices, "Max tx/rx queues");

static int myri10ge_rss_hash = MXGEFW_RSS_HASH_TYPE_SRC_DST_PORT;
module_param(myri10ge_rss_hash, int, S_IRUGO);
MODULE_PARM_DESC(myri10ge_rss_hash, "Type of RSS hashing to do");

static int myri10ge_dca = 1;
module_param(myri10ge_dca, int, S_IRUGO);
MODULE_PARM_DESC(myri10ge_dca, "Enable DCA if possible");

#define MYRI10GE_FW_OFFSET 1024*1024
#define MYRI10GE_HIGHPART_TO_U32(X) \
(sizeof (X) == 8) ? ((u32)((u64)(X) >> 32)) : (0)
#define MYRI10GE_LOWPART_TO_U32(X) ((u32)(X))

#define myri10ge_pio_copy(to,from,size) __iowrite64_copy(to,from,size/8)

static void myri10ge_set_multicast_list(struct net_device *dev);
static netdev_tx_t myri10ge_sw_tso(struct sk_buff *skb,
					 struct net_device *dev);

static inline void put_be32(__be32 val, __be32 __iomem * p)
{
	__raw_writel((__force __u32) val, (__force void __iomem *)p);
}

static struct net_device_stats *myri10ge_get_stats(struct net_device *dev);

static void set_fw_name(struct myri10ge_priv *mgp, char *name, bool allocated)
{
	if (mgp->fw_name_allocated)
		kfree(mgp->fw_name);
	mgp->fw_name = name;
	mgp->fw_name_allocated = allocated;
}

static int
myri10ge_send_cmd(struct myri10ge_priv *mgp, u32 cmd,
		  struct myri10ge_cmd *data, int atomic)
{
	struct mcp_cmd *buf;
	char buf_bytes[sizeof(*buf) + 8];
	struct mcp_cmd_response *response = mgp->cmd;
	char __iomem *cmd_addr = mgp->sram + MXGEFW_ETH_CMD;
	u32 dma_low, dma_high, result, value;
	int sleep_total = 0;

	/* ensure buf is aligned to 8 bytes */
	buf = (struct mcp_cmd *)ALIGN((unsigned long)buf_bytes, 8);

	buf->data0 = htonl(data->data0);
	buf->data1 = htonl(data->data1);
	buf->data2 = htonl(data->data2);
	buf->cmd = htonl(cmd);
	dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus);
	dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus);

	buf->response_addr.low = htonl(dma_low);
	buf->response_addr.high = htonl(dma_high);
	response->result = htonl(MYRI10GE_NO_RESPONSE_RESULT);
	mb();
	myri10ge_pio_copy(cmd_addr, buf, sizeof(*buf));

	/* wait up to 15ms. Longest command is the DMA benchmark,
	 * which is capped at 5ms, but runs from a timeout handler
	 * that runs every 7.8ms. So a 15ms timeout leaves us with
	 * a 2.2ms margin
	 */
	if (atomic) {
		/* if atomic is set, do not sleep,
		 * and try to get the completion quickly
		 * (1ms will be enough for those commands) */
		for (sleep_total = 0;
		     sleep_total < 1000 &&
		     response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT);
		     sleep_total += 10) {
			udelay(10);
			mb();
		}
	} else {
		/* use msleep for most command */
		for (sleep_total = 0;
		     sleep_total < 15 &&
		     response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT);
		     sleep_total++)
			msleep(1);
	}

	result = ntohl(response->result);
	value = ntohl(response->data);
	if (result != MYRI10GE_NO_RESPONSE_RESULT) {
		if (result == 0) {
			data->data0 = value;
			return 0;
		} else if (result == MXGEFW_CMD_UNKNOWN) {
			return -ENOSYS;
		} else if (result == MXGEFW_CMD_ERROR_UNALIGNED) {
			return -E2BIG;
		} else if (result == MXGEFW_CMD_ERROR_RANGE &&
			   cmd == MXGEFW_CMD_ENABLE_RSS_QUEUES &&
			   (data->
			    data1 & MXGEFW_SLICE_ENABLE_MULTIPLE_TX_QUEUES) !=
			   0) {
			return -ERANGE;
		} else {
			dev_err(&mgp->pdev->dev,
				"command %d failed, result = %d\n",
				cmd, result);
			return -ENXIO;
		}
	}

	dev_err(&mgp->pdev->dev, "command %d timed out, result = %d\n",
		cmd, result);
	return -EAGAIN;
}

/*
 * The eeprom strings on the lanaiX have the format
 * SN=x\0
 * MAC=x:x:x:x:x:x\0
 * PT:ddd mmm xx xx:xx:xx xx\0
 * PV:ddd mmm xx xx:xx:xx xx\0
 */
static int myri10ge_read_mac_addr(struct myri10ge_priv *mgp)
{
	char *ptr, *limit;
	int i;

	ptr = mgp->eeprom_strings;
	limit = mgp->eeprom_strings + MYRI10GE_EEPROM_STRINGS_SIZE;

	while (*ptr != '\0' && ptr < limit) {
		if (memcmp(ptr, "MAC=", 4) == 0) {
			ptr += 4;
			mgp->mac_addr_string = ptr;
			for (i = 0; i < 6; i++) {
				if ((ptr + 2) > limit)
					goto abort;
				mgp->mac_addr[i] =
				    simple_strtoul(ptr, &ptr, 16);
				ptr += 1;
			}
		}
		if (memcmp(ptr, "PC=", 3) == 0) {
			ptr += 3;
			mgp->product_code_string = ptr;
		}
		if (memcmp((const void *)ptr, "SN=", 3) == 0) {
			ptr += 3;
			mgp->serial_number = simple_strtoul(ptr, &ptr, 10);
		}
		while (ptr < limit && *ptr++) ;
	}

	return 0;

abort:
	dev_err(&mgp->pdev->dev, "failed to parse eeprom_strings\n");
	return -ENXIO;
}

/*
 * Enable or disable periodic RDMAs from the host to make certain
 * chipsets resend dropped PCIe messages
 */

static void myri10ge_dummy_rdma(struct myri10ge_priv *mgp, int enable)
{
	char __iomem *submit;
	__be32 buf[16] __attribute__ ((__aligned__(8)));
	u32 dma_low, dma_high;
	int i;

	/* clear confirmation addr */
	mgp->cmd->data = 0;
	mb();

	/* send a rdma command to the PCIe engine, and wait for the
	 * response in the confirmation address.  The firmware should
	 * write a -1 there to indicate it is alive and well
	 */
	dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus);
	dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus);

	buf[0] = htonl(dma_high);	/* confirm addr MSW */
	buf[1] = htonl(dma_low);	/* confirm addr LSW */
	buf[2] = MYRI10GE_NO_CONFIRM_DATA;	/* confirm data */
	buf[3] = htonl(dma_high);	/* dummy addr MSW */
	buf[4] = htonl(dma_low);	/* dummy addr LSW */
	buf[5] = htonl(enable);	/* enable? */

	submit = mgp->sram + MXGEFW_BOOT_DUMMY_RDMA;

	myri10ge_pio_copy(submit, &buf, sizeof(buf));
	for (i = 0; mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 20; i++)
		msleep(1);
	if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA)
		dev_err(&mgp->pdev->dev, "dummy rdma %s failed\n",
			(enable ? "enable" : "disable"));
}

static int
myri10ge_validate_firmware(struct myri10ge_priv *mgp,
			   struct mcp_gen_header *hdr)
{
	struct device *dev = &mgp->pdev->dev;

	/* check firmware type */
	if (ntohl(hdr->mcp_type) != MCP_TYPE_ETH) {
		dev_err(dev, "Bad firmware type: 0x%x\n", ntohl(hdr->mcp_type));
		return -EINVAL;
	}

	/* save firmware version for ethtool */
	strncpy(mgp->fw_version, hdr->version, sizeof(mgp->fw_version));

	sscanf(mgp->fw_version, "%d.%d.%d", &mgp->fw_ver_major,
	       &mgp->fw_ver_minor, &mgp->fw_ver_tiny);

	if (!(mgp->fw_ver_major == MXGEFW_VERSION_MAJOR &&
	      mgp->fw_ver_minor == MXGEFW_VERSION_MINOR)) {
		dev_err(dev, "Found firmware version %s\n", mgp->fw_version);
		dev_err(dev, "Driver needs %d.%d\n", MXGEFW_VERSION_MAJOR,
			MXGEFW_VERSION_MINOR);
		return -EINVAL;
	}
	return 0;
}

static int myri10ge_load_hotplug_firmware(struct myri10ge_priv *mgp, u32 * size)
{
	unsigned crc, reread_crc;
	const struct firmware *fw;
	struct device *dev = &mgp->pdev->dev;
	unsigned char *fw_readback;
	struct mcp_gen_header *hdr;
	size_t hdr_offset;
	int status;
	unsigned i;

	if ((status = request_firmware(&fw, mgp->fw_name, dev)) < 0) {
		dev_err(dev, "Unable to load %s firmware image via hotplug\n",
			mgp->fw_name);
		status = -EINVAL;
		goto abort_with_nothing;
	}

	/* check size */

	if (fw->size >= mgp->sram_size - MYRI10GE_FW_OFFSET ||
	    fw->size < MCP_HEADER_PTR_OFFSET + 4) {
		dev_err(dev, "Firmware size invalid:%d\n", (int)fw->size);
		status = -EINVAL;
		goto abort_with_fw;
	}

	/* check id */
	hdr_offset = ntohl(*(__be32 *) (fw->data + MCP_HEADER_PTR_OFFSET));
	if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > fw->size) {
		dev_err(dev, "Bad firmware file\n");
		status = -EINVAL;
		goto abort_with_fw;
	}
	hdr = (void *)(fw->data + hdr_offset);

	status = myri10ge_validate_firmware(mgp, hdr);
	if (status != 0)
		goto abort_with_fw;

	crc = crc32(~0, fw->data, fw->size);
	for (i = 0; i < fw->size; i += 256) {
		myri10ge_pio_copy(mgp->sram + MYRI10GE_FW_OFFSET + i,
				  fw->data + i,
				  min(256U, (unsigned)(fw->size - i)));
		mb();
		readb(mgp->sram);
	}
	fw_readback = vmalloc(fw->size);
	if (!fw_readback) {
		status = -ENOMEM;
		goto abort_with_fw;
	}
	/* corruption checking is good for parity recovery and buggy chipset */
	memcpy_fromio(fw_readback, mgp->sram + MYRI10GE_FW_OFFSET, fw->size);
	reread_crc = crc32(~0, fw_readback, fw->size);
	vfree(fw_readback);
	if (crc != reread_crc) {
		dev_err(dev, "CRC failed(fw-len=%u), got 0x%x (expect 0x%x)\n",
			(unsigned)fw->size, reread_crc, crc);
		status = -EIO;
		goto abort_with_fw;
	}
	*size = (u32) fw->size;

abort_with_fw:
	release_firmware(fw);

abort_with_nothing:
	return status;
}

static int myri10ge_adopt_running_firmware(struct myri10ge_priv *mgp)
{
	struct mcp_gen_header *hdr;
	struct device *dev = &mgp->pdev->dev;
	const size_t bytes = sizeof(struct mcp_gen_header);
	size_t hdr_offset;
	int status;

	/* find running firmware header */
	hdr_offset = swab32(readl(mgp->sram + MCP_HEADER_PTR_OFFSET));

	if ((hdr_offset & 3) || hdr_offset + sizeof(*hdr) > mgp->sram_size) {
		dev_err(dev, "Running firmware has bad header offset (%d)\n",
			(int)hdr_offset);
		return -EIO;
	}

	/* copy header of running firmware from SRAM to host memory to
	 * validate firmware */
	hdr = kmalloc(bytes, GFP_KERNEL);
	if (hdr == NULL) {
		dev_err(dev, "could not malloc firmware hdr\n");
		return -ENOMEM;
	}
	memcpy_fromio(hdr, mgp->sram + hdr_offset, bytes);
	status = myri10ge_validate_firmware(mgp, hdr);
	kfree(hdr);

	/* check to see if adopted firmware has bug where adopting
	 * it will cause broadcasts to be filtered unless the NIC
	 * is kept in ALLMULTI mode */
	if (mgp->fw_ver_major == 1 && mgp->fw_ver_minor == 4 &&
	    mgp->fw_ver_tiny >= 4 && mgp->fw_ver_tiny <= 11) {
		mgp->adopted_rx_filter_bug = 1;
		dev_warn(dev, "Adopting fw %d.%d.%d: "
			 "working around rx filter bug\n",
			 mgp->fw_ver_major, mgp->fw_ver_minor,
			 mgp->fw_ver_tiny);
	}
	return status;
}

static int myri10ge_get_firmware_capabilities(struct myri10ge_priv *mgp)
{
	struct myri10ge_cmd cmd;
	int status;

	/* probe for IPv6 TSO support */
	mgp->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO;
	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_TSO6_HDR_SIZE,
				   &cmd, 0);
	if (status == 0) {
		mgp->max_tso6 = cmd.data0;
		mgp->features |= NETIF_F_TSO6;
	}

	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_RX_RING_SIZE, &cmd, 0);
	if (status != 0) {
		dev_err(&mgp->pdev->dev,
			"failed MXGEFW_CMD_GET_RX_RING_SIZE\n");
		return -ENXIO;
	}

	mgp->max_intr_slots = 2 * (cmd.data0 / sizeof(struct mcp_dma_addr));

	return 0;
}

static int myri10ge_load_firmware(struct myri10ge_priv *mgp, int adopt)
{
	char __iomem *submit;
	__be32 buf[16] __attribute__ ((__aligned__(8)));
	u32 dma_low, dma_high, size;
	int status, i;

	size = 0;
	status = myri10ge_load_hotplug_firmware(mgp, &size);
	if (status) {
		if (!adopt)
			return status;
		dev_warn(&mgp->pdev->dev, "hotplug firmware loading failed\n");

		/* Do not attempt to adopt firmware if there
		 * was a bad crc */
		if (status == -EIO)
			return status;

		status = myri10ge_adopt_running_firmware(mgp);
		if (status != 0) {
			dev_err(&mgp->pdev->dev,
				"failed to adopt running firmware\n");
			return status;
		}
		dev_info(&mgp->pdev->dev,
			 "Successfully adopted running firmware\n");
		if (mgp->tx_boundary == 4096) {
			dev_warn(&mgp->pdev->dev,
				 "Using firmware currently running on NIC"
				 ".  For optimal\n");
			dev_warn(&mgp->pdev->dev,
				 "performance consider loading optimized "
				 "firmware\n");
			dev_warn(&mgp->pdev->dev, "via hotplug\n");
		}

		set_fw_name(mgp, "adopted", false);
		mgp->tx_boundary = 2048;
		myri10ge_dummy_rdma(mgp, 1);
		status = myri10ge_get_firmware_capabilities(mgp);
		return status;
	}

	/* clear confirmation addr */
	mgp->cmd->data = 0;
	mb();

	/* send a reload command to the bootstrap MCP, and wait for the
	 *  response in the confirmation address.  The firmware should
	 * write a -1 there to indicate it is alive and well
	 */
	dma_low = MYRI10GE_LOWPART_TO_U32(mgp->cmd_bus);
	dma_high = MYRI10GE_HIGHPART_TO_U32(mgp->cmd_bus);

	buf[0] = htonl(dma_high);	/* confirm addr MSW */
	buf[1] = htonl(dma_low);	/* confirm addr LSW */
	buf[2] = MYRI10GE_NO_CONFIRM_DATA;	/* confirm data */

	/* FIX: All newest firmware should un-protect the bottom of
	 * the sram before handoff. However, the very first interfaces
	 * do not. Therefore the handoff copy must skip the first 8 bytes
	 */
	buf[3] = htonl(MYRI10GE_FW_OFFSET + 8);	/* where the code starts */
	buf[4] = htonl(size - 8);	/* length of code */
	buf[5] = htonl(8);	/* where to copy to */
	buf[6] = htonl(0);	/* where to jump to */

	submit = mgp->sram + MXGEFW_BOOT_HANDOFF;

	myri10ge_pio_copy(submit, &buf, sizeof(buf));
	mb();
	msleep(1);
	mb();
	i = 0;
	while (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA && i < 9) {
		msleep(1 << i);
		i++;
	}
	if (mgp->cmd->data != MYRI10GE_NO_CONFIRM_DATA) {
		dev_err(&mgp->pdev->dev, "handoff failed\n");
		return -ENXIO;
	}
	myri10ge_dummy_rdma(mgp, 1);
	status = myri10ge_get_firmware_capabilities(mgp);

	return status;
}

static int myri10ge_update_mac_address(struct myri10ge_priv *mgp, u8 * addr)
{
	struct myri10ge_cmd cmd;
	int status;

	cmd.data0 = ((addr[0] << 24) | (addr[1] << 16)
		     | (addr[2] << 8) | addr[3]);

	cmd.data1 = ((addr[4] << 8) | (addr[5]));

	status = myri10ge_send_cmd(mgp, MXGEFW_SET_MAC_ADDRESS, &cmd, 0);
	return status;
}

static int myri10ge_change_pause(struct myri10ge_priv *mgp, int pause)
{
	struct myri10ge_cmd cmd;
	int status, ctl;

	ctl = pause ? MXGEFW_ENABLE_FLOW_CONTROL : MXGEFW_DISABLE_FLOW_CONTROL;
	status = myri10ge_send_cmd(mgp, ctl, &cmd, 0);

	if (status) {
		netdev_err(mgp->dev, "Failed to set flow control mode\n");
		return status;
	}
	mgp->pause = pause;
	return 0;
}

static void
myri10ge_change_promisc(struct myri10ge_priv *mgp, int promisc, int atomic)
{
	struct myri10ge_cmd cmd;
	int status, ctl;

	ctl = promisc ? MXGEFW_ENABLE_PROMISC : MXGEFW_DISABLE_PROMISC;
	status = myri10ge_send_cmd(mgp, ctl, &cmd, atomic);
	if (status)
		netdev_err(mgp->dev, "Failed to set promisc mode\n");
}

static int myri10ge_dma_test(struct myri10ge_priv *mgp, int test_type)
{
	struct myri10ge_cmd cmd;
	int status;
	u32 len;
	struct page *dmatest_page;
	dma_addr_t dmatest_bus;
	char *test = " ";

	dmatest_page = alloc_page(GFP_KERNEL);
	if (!dmatest_page)
		return -ENOMEM;
	dmatest_bus = pci_map_page(mgp->pdev, dmatest_page, 0, PAGE_SIZE,
				   DMA_BIDIRECTIONAL);

	/* Run a small DMA test.
	 * The magic multipliers to the length tell the firmware
	 * to do DMA read, write, or read+write tests.  The
	 * results are returned in cmd.data0.  The upper 16
	 * bits or the return is the number of transfers completed.
	 * The lower 16 bits is the time in 0.5us ticks that the
	 * transfers took to complete.
	 */

	len = mgp->tx_boundary;

	cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus);
	cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus);
	cmd.data2 = len * 0x10000;
	status = myri10ge_send_cmd(mgp, test_type, &cmd, 0);
	if (status != 0) {
		test = "read";
		goto abort;
	}
	mgp->read_dma = ((cmd.data0 >> 16) * len * 2) / (cmd.data0 & 0xffff);
	cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus);
	cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus);
	cmd.data2 = len * 0x1;
	status = myri10ge_send_cmd(mgp, test_type, &cmd, 0);
	if (status != 0) {
		test = "write";
		goto abort;
	}
	mgp->write_dma = ((cmd.data0 >> 16) * len * 2) / (cmd.data0 & 0xffff);

	cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus);
	cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus);
	cmd.data2 = len * 0x10001;
	status = myri10ge_send_cmd(mgp, test_type, &cmd, 0);
	if (status != 0) {
		test = "read/write";
		goto abort;
	}
	mgp->read_write_dma = ((cmd.data0 >> 16) * len * 2 * 2) /
	    (cmd.data0 & 0xffff);

abort:
	pci_unmap_page(mgp->pdev, dmatest_bus, PAGE_SIZE, DMA_BIDIRECTIONAL);
	put_page(dmatest_page);

	if (status != 0 && test_type != MXGEFW_CMD_UNALIGNED_TEST)
		dev_warn(&mgp->pdev->dev, "DMA %s benchmark failed: %d\n",
			 test, status);

	return status;
}

static int myri10ge_reset(struct myri10ge_priv *mgp)
{
	struct myri10ge_cmd cmd;
	struct myri10ge_slice_state *ss;
	int i, status;
	size_t bytes;
#ifdef CONFIG_MYRI10GE_DCA
	unsigned long dca_tag_off;
#endif

	/* try to send a reset command to the card to see if it
	 * is alive */
	memset(&cmd, 0, sizeof(cmd));
	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_RESET, &cmd, 0);
	if (status != 0) {
		dev_err(&mgp->pdev->dev, "failed reset\n");
		return -ENXIO;
	}

	(void)myri10ge_dma_test(mgp, MXGEFW_DMA_TEST);
	/*
	 * Use non-ndis mcp_slot (eg, 4 bytes total,
	 * no toeplitz hash value returned.  Older firmware will
	 * not understand this command, but will use the correct
	 * sized mcp_slot, so we ignore error returns
	 */
	cmd.data0 = MXGEFW_RSS_MCP_SLOT_TYPE_MIN;
	(void)myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_RSS_MCP_SLOT_TYPE, &cmd, 0);

	/* Now exchange information about interrupts  */

	bytes = mgp->max_intr_slots * sizeof(*mgp->ss[0].rx_done.entry);
	cmd.data0 = (u32) bytes;
	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_SIZE, &cmd, 0);

	/*
	 * Even though we already know how many slices are supported
	 * via myri10ge_probe_slices() MXGEFW_CMD_GET_MAX_RSS_QUEUES
	 * has magic side effects, and must be called after a reset.
	 * It must be called prior to calling any RSS related cmds,
	 * including assigning an interrupt queue for anything but
	 * slice 0.  It must also be called *after*
	 * MXGEFW_CMD_SET_INTRQ_SIZE, since the intrq size is used by
	 * the firmware to compute offsets.
	 */

	if (mgp->num_slices > 1) {

		/* ask the maximum number of slices it supports */
		status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_RSS_QUEUES,
					   &cmd, 0);
		if (status != 0) {
			dev_err(&mgp->pdev->dev,
				"failed to get number of slices\n");
		}

		/*
		 * MXGEFW_CMD_ENABLE_RSS_QUEUES must be called prior
		 * to setting up the interrupt queue DMA
		 */

		cmd.data0 = mgp->num_slices;
		cmd.data1 = MXGEFW_SLICE_INTR_MODE_ONE_PER_SLICE;
		if (mgp->dev->real_num_tx_queues > 1)
			cmd.data1 |= MXGEFW_SLICE_ENABLE_MULTIPLE_TX_QUEUES;
		status = myri10ge_send_cmd(mgp, MXGEFW_CMD_ENABLE_RSS_QUEUES,
					   &cmd, 0);

		/* Firmware older than 1.4.32 only supports multiple
		 * RX queues, so if we get an error, first retry using a
		 * single TX queue before giving up */
		if (status != 0 && mgp->dev->real_num_tx_queues > 1) {
			netif_set_real_num_tx_queues(mgp->dev, 1);
			cmd.data0 = mgp->num_slices;
			cmd.data1 = MXGEFW_SLICE_INTR_MODE_ONE_PER_SLICE;
			status = myri10ge_send_cmd(mgp,
						   MXGEFW_CMD_ENABLE_RSS_QUEUES,
						   &cmd, 0);
		}

		if (status != 0) {
			dev_err(&mgp->pdev->dev,
				"failed to set number of slices\n");

			return status;
		}
	}
	for (i = 0; i < mgp->num_slices; i++) {
		ss = &mgp->ss[i];
		cmd.data0 = MYRI10GE_LOWPART_TO_U32(ss->rx_done.bus);
		cmd.data1 = MYRI10GE_HIGHPART_TO_U32(ss->rx_done.bus);
		cmd.data2 = i;
		status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_DMA,
					    &cmd, 0);
	};

	status |=
	    myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_ACK_OFFSET, &cmd, 0);
	for (i = 0; i < mgp->num_slices; i++) {
		ss = &mgp->ss[i];
		ss->irq_claim =
		    (__iomem __be32 *) (mgp->sram + cmd.data0 + 8 * i);
	}
	status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_IRQ_DEASSERT_OFFSET,
				    &cmd, 0);
	mgp->irq_deassert = (__iomem __be32 *) (mgp->sram + cmd.data0);

	status |= myri10ge_send_cmd
	    (mgp, MXGEFW_CMD_GET_INTR_COAL_DELAY_OFFSET, &cmd, 0);
	mgp->intr_coal_delay_ptr = (__iomem __be32 *) (mgp->sram + cmd.data0);
	if (status != 0) {
		dev_err(&mgp->pdev->dev, "failed set interrupt parameters\n");
		return status;
	}
	put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr);

#ifdef CONFIG_MYRI10GE_DCA
	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_DCA_OFFSET, &cmd, 0);
	dca_tag_off = cmd.data0;
	for (i = 0; i < mgp->num_slices; i++) {
		ss = &mgp->ss[i];
		if (status == 0) {
			ss->dca_tag = (__iomem __be32 *)
			    (mgp->sram + dca_tag_off + 4 * i);
		} else {
			ss->dca_tag = NULL;
		}
	}
#endif				/* CONFIG_MYRI10GE_DCA */

	/* reset mcp/driver shared state back to 0 */

	mgp->link_changes = 0;
	for (i = 0; i < mgp->num_slices; i++) {
		ss = &mgp->ss[i];

		memset(ss->rx_done.entry, 0, bytes);
		ss->tx.req = 0;
		ss->tx.done = 0;
		ss->tx.pkt_start = 0;
		ss->tx.pkt_done = 0;
		ss->rx_big.cnt = 0;
		ss->rx_small.cnt = 0;
		ss->rx_done.idx = 0;
		ss->rx_done.cnt = 0;
		ss->tx.wake_queue = 0;
		ss->tx.stop_queue = 0;
	}

	status = myri10ge_update_mac_address(mgp, mgp->dev->dev_addr);
	myri10ge_change_pause(mgp, mgp->pause);
	myri10ge_set_multicast_list(mgp->dev);
	return status;
}

#ifdef CONFIG_MYRI10GE_DCA
static int myri10ge_toggle_relaxed(struct pci_dev *pdev, int on)
{
	int ret, cap, err;
	u16 ctl;

	cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
	if (!cap)
		return 0;

	err = pci_read_config_word(pdev, cap + PCI_EXP_DEVCTL, &ctl);
	ret = (ctl & PCI_EXP_DEVCTL_RELAX_EN) >> 4;
	if (ret != on) {
		ctl &= ~PCI_EXP_DEVCTL_RELAX_EN;
		ctl |= (on << 4);
		pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL, ctl);
	}
	return ret;
}

static void
myri10ge_write_dca(struct myri10ge_slice_state *ss, int cpu, int tag)
{
	ss->cached_dca_tag = tag;
	put_be32(htonl(tag), ss->dca_tag);
}

static inline void myri10ge_update_dca(struct myri10ge_slice_state *ss)
{
	int cpu = get_cpu();
	int tag;

	if (cpu != ss->cpu) {
		tag = dca3_get_tag(&ss->mgp->pdev->dev, cpu);
		if (ss->cached_dca_tag != tag)
			myri10ge_write_dca(ss, cpu, tag);
		ss->cpu = cpu;
	}
	put_cpu();
}

static void myri10ge_setup_dca(struct myri10ge_priv *mgp)
{
	int err, i;
	struct pci_dev *pdev = mgp->pdev;

	if (mgp->ss[0].dca_tag == NULL || mgp->dca_enabled)
		return;
	if (!myri10ge_dca) {
		dev_err(&pdev->dev, "dca disabled by administrator\n");
		return;
	}
	err = dca_add_requester(&pdev->dev);
	if (err) {
		if (err != -ENODEV)
			dev_err(&pdev->dev,
				"dca_add_requester() failed, err=%d\n", err);
		return;
	}
	mgp->relaxed_order = myri10ge_toggle_relaxed(pdev, 0);
	mgp->dca_enabled = 1;
	for (i = 0; i < mgp->num_slices; i++) {
		mgp->ss[i].cpu = -1;
		mgp->ss[i].cached_dca_tag = -1;
		myri10ge_update_dca(&mgp->ss[i]);
	 }
}

static void myri10ge_teardown_dca(struct myri10ge_priv *mgp)
{
	struct pci_dev *pdev = mgp->pdev;
	int err;

	if (!mgp->dca_enabled)
		return;
	mgp->dca_enabled = 0;
	if (mgp->relaxed_order)
		myri10ge_toggle_relaxed(pdev, 1);
	err = dca_remove_requester(&pdev->dev);
}

static int myri10ge_notify_dca_device(struct device *dev, void *data)
{
	struct myri10ge_priv *mgp;
	unsigned long event;

	mgp = dev_get_drvdata(dev);
	event = *(unsigned long *)data;

	if (event == DCA_PROVIDER_ADD)
		myri10ge_setup_dca(mgp);
	else if (event == DCA_PROVIDER_REMOVE)
		myri10ge_teardown_dca(mgp);
	return 0;
}
#endif				/* CONFIG_MYRI10GE_DCA */

static inline void
myri10ge_submit_8rx(struct mcp_kreq_ether_recv __iomem * dst,
		    struct mcp_kreq_ether_recv *src)
{
	__be32 low;

	low = src->addr_low;
	src->addr_low = htonl(DMA_BIT_MASK(32));
	myri10ge_pio_copy(dst, src, 4 * sizeof(*src));
	mb();
	myri10ge_pio_copy(dst + 4, src + 4, 4 * sizeof(*src));
	mb();
	src->addr_low = low;
	put_be32(low, &dst->addr_low);
	mb();
}

static inline void myri10ge_vlan_ip_csum(struct sk_buff *skb, __wsum hw_csum)
{
	struct vlan_hdr *vh = (struct vlan_hdr *)(skb->data);

	if ((skb->protocol == htons(ETH_P_8021Q)) &&
	    (vh->h_vlan_encapsulated_proto == htons(ETH_P_IP) ||
	     vh->h_vlan_encapsulated_proto == htons(ETH_P_IPV6))) {
		skb->csum = hw_csum;
		skb->ip_summed = CHECKSUM_COMPLETE;
	}
}

static inline void
myri10ge_rx_skb_build(struct sk_buff *skb, u8 * va,
		      struct skb_frag_struct *rx_frags, int len, int hlen)
{
	struct skb_frag_struct *skb_frags;

	skb->len = skb->data_len = len;
	skb->truesize = len + sizeof(struct sk_buff);
	/* attach the page(s) */

	skb_frags = skb_shinfo(skb)->frags;
	while (len > 0) {
		memcpy(skb_frags, rx_frags, sizeof(*skb_frags));
		len -= rx_frags->size;
		skb_frags++;
		rx_frags++;
		skb_shinfo(skb)->nr_frags++;
	}

	/* pskb_may_pull is not available in irq context, but
	 * skb_pull() (for ether_pad and eth_type_trans()) requires
	 * the beginning of the packet in skb_headlen(), move it
	 * manually */
	skb_copy_to_linear_data(skb, va, hlen);
	skb_shinfo(skb)->frags[0].page_offset += hlen;
	skb_shinfo(skb)->frags[0].size -= hlen;
	skb->data_len -= hlen;
	skb->tail += hlen;
	skb_pull(skb, MXGEFW_PAD);
}

static void
myri10ge_alloc_rx_pages(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx,
			int bytes, int watchdog)
{
	struct page *page;
	int idx;
#if MYRI10GE_ALLOC_SIZE > 4096
	int end_offset;
#endif

	if (unlikely(rx->watchdog_needed && !watchdog))
		return;

	/* try to refill entire ring */
	while (rx->fill_cnt != (rx->cnt + rx->mask + 1)) {
		idx = rx->fill_cnt & rx->mask;
		if (rx->page_offset + bytes <= MYRI10GE_ALLOC_SIZE) {
			/* we can use part of previous page */
			get_page(rx->page);
		} else {
			/* we need a new page */
			page =
			    alloc_pages(GFP_ATOMIC | __GFP_COMP,
					MYRI10GE_ALLOC_ORDER);
			if (unlikely(page == NULL)) {
				if (rx->fill_cnt - rx->cnt < 16)
					rx->watchdog_needed = 1;
				return;
			}
			rx->page = page;
			rx->page_offset = 0;
			rx->bus = pci_map_page(mgp->pdev, page, 0,
					       MYRI10GE_ALLOC_SIZE,
					       PCI_DMA_FROMDEVICE);
		}
		rx->info[idx].page = rx->page;
		rx->info[idx].page_offset = rx->page_offset;
		/* note that this is the address of the start of the
		 * page */
		dma_unmap_addr_set(&rx->info[idx], bus, rx->bus);
		rx->shadow[idx].addr_low =
		    htonl(MYRI10GE_LOWPART_TO_U32(rx->bus) + rx->page_offset);
		rx->shadow[idx].addr_high =
		    htonl(MYRI10GE_HIGHPART_TO_U32(rx->bus));

		/* start next packet on a cacheline boundary */
		rx->page_offset += SKB_DATA_ALIGN(bytes);

#if MYRI10GE_ALLOC_SIZE > 4096
		/* don't cross a 4KB boundary */
		end_offset = rx->page_offset + bytes - 1;
		if ((unsigned)(rx->page_offset ^ end_offset) > 4095)
			rx->page_offset = end_offset & ~4095;
#endif
		rx->fill_cnt++;

		/* copy 8 descriptors to the firmware at a time */
		if ((idx & 7) == 7) {
			myri10ge_submit_8rx(&rx->lanai[idx - 7],
					    &rx->shadow[idx - 7]);
		}
	}
}

static inline void
myri10ge_unmap_rx_page(struct pci_dev *pdev,
		       struct myri10ge_rx_buffer_state *info, int bytes)
{
	/* unmap the recvd page if we're the only or last user of it */
	if (bytes >= MYRI10GE_ALLOC_SIZE / 2 ||
	    (info->page_offset + 2 * bytes) > MYRI10GE_ALLOC_SIZE) {
		pci_unmap_page(pdev, (dma_unmap_addr(info, bus)
				      & ~(MYRI10GE_ALLOC_SIZE - 1)),
			       MYRI10GE_ALLOC_SIZE, PCI_DMA_FROMDEVICE);
	}
}

#define MYRI10GE_HLEN 64	/* The number of bytes to copy from a
				 * page into an skb */

static inline int
myri10ge_rx_done(struct myri10ge_slice_state *ss, struct myri10ge_rx_buf *rx,
		 int bytes, int len, __wsum csum)
{
	struct myri10ge_priv *mgp = ss->mgp;
	struct sk_buff *skb;
	struct skb_frag_struct rx_frags[MYRI10GE_MAX_FRAGS_PER_FRAME];
	int i, idx, hlen, remainder;
	struct pci_dev *pdev = mgp->pdev;
	struct net_device *dev = mgp->dev;
	u8 *va;

	len += MXGEFW_PAD;
	idx = rx->cnt & rx->mask;
	va = page_address(rx->info[idx].page) + rx->info[idx].page_offset;
	prefetch(va);
	/* Fill skb_frag_struct(s) with data from our receive */
	for (i = 0, remainder = len; remainder > 0; i++) {
		myri10ge_unmap_rx_page(pdev, &rx->info[idx], bytes);
		rx_frags[i].page = rx->info[idx].page;
		rx_frags[i].page_offset = rx->info[idx].page_offset;
		if (remainder < MYRI10GE_ALLOC_SIZE)
			rx_frags[i].size = remainder;
		else
			rx_frags[i].size = MYRI10GE_ALLOC_SIZE;
		rx->cnt++;
		idx = rx->cnt & rx->mask;
		remainder -= MYRI10GE_ALLOC_SIZE;
	}

	if (dev->features & NETIF_F_LRO) {
		rx_frags[0].page_offset += MXGEFW_PAD;
		rx_frags[0].size -= MXGEFW_PAD;
		len -= MXGEFW_PAD;
		lro_receive_frags(&ss->rx_done.lro_mgr, rx_frags,
				  /* opaque, will come back in get_frag_header */
				  len, len,
				  (void *)(__force unsigned long)csum, csum);

		return 1;
	}

	hlen = MYRI10GE_HLEN > len ? len : MYRI10GE_HLEN;

	/* allocate an skb to attach the page(s) to. This is done
	 * after trying LRO, so as to avoid skb allocation overheads */

	skb = netdev_alloc_skb(dev, MYRI10GE_HLEN + 16);
	if (unlikely(skb == NULL)) {
		ss->stats.rx_dropped++;
		do {
			i--;
			put_page(rx_frags[i].page);
		} while (i != 0);
		return 0;
	}

	/* Attach the pages to the skb, and trim off any padding */
	myri10ge_rx_skb_build(skb, va, rx_frags, len, hlen);
	if (skb_shinfo(skb)->frags[0].size <= 0) {
		put_page(skb_shinfo(skb)->frags[0].page);
		skb_shinfo(skb)->nr_frags = 0;
	}
	skb->protocol = eth_type_trans(skb, dev);
	skb_record_rx_queue(skb, ss - &mgp->ss[0]);

	if (mgp->csum_flag) {
		if ((skb->protocol == htons(ETH_P_IP)) ||
		    (skb->protocol == htons(ETH_P_IPV6))) {
			skb->csum = csum;
			skb->ip_summed = CHECKSUM_COMPLETE;
		} else
			myri10ge_vlan_ip_csum(skb, csum);
	}
	netif_receive_skb(skb);
	return 1;
}

static inline void
myri10ge_tx_done(struct myri10ge_slice_state *ss, int mcp_index)
{
	struct pci_dev *pdev = ss->mgp->pdev;
	struct myri10ge_tx_buf *tx = &ss->tx;
	struct netdev_queue *dev_queue;
	struct sk_buff *skb;
	int idx, len;

	while (tx->pkt_done != mcp_index) {
		idx = tx->done & tx->mask;
		skb = tx->info[idx].skb;

		/* Mark as free */
		tx->info[idx].skb = NULL;
		if (tx->info[idx].last) {
			tx->pkt_done++;
			tx->info[idx].last = 0;
		}
		tx->done++;
		len = dma_unmap_len(&tx->info[idx], len);
		dma_unmap_len_set(&tx->info[idx], len, 0);
		if (skb) {
			ss->stats.tx_bytes += skb->len;
			ss->stats.tx_packets++;
			dev_kfree_skb_irq(skb);
			if (len)
				pci_unmap_single(pdev,
						 dma_unmap_addr(&tx->info[idx],
								bus), len,
						 PCI_DMA_TODEVICE);
		} else {
			if (len)
				pci_unmap_page(pdev,
					       dma_unmap_addr(&tx->info[idx],
							      bus), len,
					       PCI_DMA_TODEVICE);
		}
	}

	dev_queue = netdev_get_tx_queue(ss->dev, ss - ss->mgp->ss);
	/*
	 * Make a minimal effort to prevent the NIC from polling an
	 * idle tx queue.  If we can't get the lock we leave the queue
	 * active. In this case, either a thread was about to start
	 * using the queue anyway, or we lost a race and the NIC will
	 * waste some of its resources polling an inactive queue for a
	 * while.
	 */

	if ((ss->mgp->dev->real_num_tx_queues > 1) &&
	    __netif_tx_trylock(dev_queue)) {
		if (tx->req == tx->done) {
			tx->queue_active = 0;
			put_be32(htonl(1), tx->send_stop);
			mb();
			mmiowb();
		}
		__netif_tx_unlock(dev_queue);
	}

	/* start the queue if we've stopped it */
	if (netif_tx_queue_stopped(dev_queue) &&
	    tx->req - tx->done < (tx->mask >> 1)) {
		tx->wake_queue++;
		netif_tx_wake_queue(dev_queue);
	}
}

static inline int
myri10ge_clean_rx_done(struct myri10ge_slice_state *ss, int budget)
{
	struct myri10ge_rx_done *rx_done = &ss->rx_done;
	struct myri10ge_priv *mgp = ss->mgp;
	struct net_device *netdev = mgp->dev;
	unsigned long rx_bytes = 0;
	unsigned long rx_packets = 0;
	unsigned long rx_ok;

	int idx = rx_done->idx;
	int cnt = rx_done->cnt;
	int work_done = 0;
	u16 length;
	__wsum checksum;

	while (rx_done->entry[idx].length != 0 && work_done < budget) {
		length = ntohs(rx_done->entry[idx].length);
		rx_done->entry[idx].length = 0;
		checksum = csum_unfold(rx_done->entry[idx].checksum);
		if (length <= mgp->small_bytes)
			rx_ok = myri10ge_rx_done(ss, &ss->rx_small,
						 mgp->small_bytes,
						 length, checksum);
		else
			rx_ok = myri10ge_rx_done(ss, &ss->rx_big,
						 mgp->big_bytes,
						 length, checksum);
		rx_packets += rx_ok;
		rx_bytes += rx_ok * (unsigned long)length;
		cnt++;
		idx = cnt & (mgp->max_intr_slots - 1);
		work_done++;
	}
	rx_done->idx = idx;
	rx_done->cnt = cnt;
	ss->stats.rx_packets += rx_packets;
	ss->stats.rx_bytes += rx_bytes;

	if (netdev->features & NETIF_F_LRO)
		lro_flush_all(&rx_done->lro_mgr);

	/* restock receive rings if needed */
	if (ss->rx_small.fill_cnt - ss->rx_small.cnt < myri10ge_fill_thresh)
		myri10ge_alloc_rx_pages(mgp, &ss->rx_small,
					mgp->small_bytes + MXGEFW_PAD, 0);
	if (ss->rx_big.fill_cnt - ss->rx_big.cnt < myri10ge_fill_thresh)
		myri10ge_alloc_rx_pages(mgp, &ss->rx_big, mgp->big_bytes, 0);

	return work_done;
}

static inline void myri10ge_check_statblock(struct myri10ge_priv *mgp)
{
	struct mcp_irq_data *stats = mgp->ss[0].fw_stats;

	if (unlikely(stats->stats_updated)) {
		unsigned link_up = ntohl(stats->link_up);
		if (mgp->link_state != link_up) {
			mgp->link_state = link_up;

			if (mgp->link_state == MXGEFW_LINK_UP) {
				if (netif_msg_link(mgp))
					netdev_info(mgp->dev, "link up\n");
				netif_carrier_on(mgp->dev);
				mgp->link_changes++;
			} else {
				if (netif_msg_link(mgp))
					netdev_info(mgp->dev, "link %s\n",
					    link_up == MXGEFW_LINK_MYRINET ?
					    "mismatch (Myrinet detected)" :
					    "down");
				netif_carrier_off(mgp->dev);
				mgp->link_changes++;
			}
		}
		if (mgp->rdma_tags_available !=
		    ntohl(stats->rdma_tags_available)) {
			mgp->rdma_tags_available =
			    ntohl(stats->rdma_tags_available);
			netdev_warn(mgp->dev, "RDMA timed out! %d tags left\n",
				    mgp->rdma_tags_available);
		}
		mgp->down_cnt += stats->link_down;
		if (stats->link_down)
			wake_up(&mgp->down_wq);
	}
}

static int myri10ge_poll(struct napi_struct *napi, int budget)
{
	struct myri10ge_slice_state *ss =
	    container_of(napi, struct myri10ge_slice_state, napi);
	int work_done;

#ifdef CONFIG_MYRI10GE_DCA
	if (ss->mgp->dca_enabled)
		myri10ge_update_dca(ss);
#endif

	/* process as many rx events as NAPI will allow */
	work_done = myri10ge_clean_rx_done(ss, budget);

	if (work_done < budget) {
		napi_complete(napi);
		put_be32(htonl(3), ss->irq_claim);
	}
	return work_done;
}

static irqreturn_t myri10ge_intr(int irq, void *arg)
{
	struct myri10ge_slice_state *ss = arg;
	struct myri10ge_priv *mgp = ss->mgp;
	struct mcp_irq_data *stats = ss->fw_stats;
	struct myri10ge_tx_buf *tx = &ss->tx;
	u32 send_done_count;
	int i;

	/* an interrupt on a non-zero receive-only slice is implicitly
	 * valid  since MSI-X irqs are not shared */
	if ((mgp->dev->real_num_tx_queues == 1) && (ss != mgp->ss)) {
		napi_schedule(&ss->napi);
		return IRQ_HANDLED;
	}

	/* make sure it is our IRQ, and that the DMA has finished */
	if (unlikely(!stats->valid))
		return IRQ_NONE;

	/* low bit indicates receives are present, so schedule
	 * napi poll handler */
	if (stats->valid & 1)
		napi_schedule(&ss->napi);

	if (!mgp->msi_enabled && !mgp->msix_enabled) {
		put_be32(0, mgp->irq_deassert);
		if (!myri10ge_deassert_wait)
			stats->valid = 0;
		mb();
	} else
		stats->valid = 0;

	/* Wait for IRQ line to go low, if using INTx */
	i = 0;
	while (1) {
		i++;
		/* check for transmit completes and receives */
		send_done_count = ntohl(stats->send_done_count);
		if (send_done_count != tx->pkt_done)
			myri10ge_tx_done(ss, (int)send_done_count);
		if (unlikely(i > myri10ge_max_irq_loops)) {
			netdev_err(mgp->dev, "irq stuck?\n");
			stats->valid = 0;
			schedule_work(&mgp->watchdog_work);
		}
		if (likely(stats->valid == 0))
			break;
		cpu_relax();
		barrier();
	}

	/* Only slice 0 updates stats */
	if (ss == mgp->ss)
		myri10ge_check_statblock(mgp);

	put_be32(htonl(3), ss->irq_claim + 1);
	return IRQ_HANDLED;
}

static int
myri10ge_get_settings(struct net_device *netdev, struct ethtool_cmd *cmd)
{
	struct myri10ge_priv *mgp = netdev_priv(netdev);
	char *ptr;
	int i;

	cmd->autoneg = AUTONEG_DISABLE;
	cmd->speed = SPEED_10000;
	cmd->duplex = DUPLEX_FULL;

	/*
	 * parse the product code to deterimine the interface type
	 * (CX4, XFP, Quad Ribbon Fiber) by looking at the character
	 * after the 3rd dash in the driver's cached copy of the
	 * EEPROM's product code string.
	 */
	ptr = mgp->product_code_string;
	if (ptr == NULL) {
		netdev_err(netdev, "Missing product code\n");
		return 0;
	}
	for (i = 0; i < 3; i++, ptr++) {
		ptr = strchr(ptr, '-');
		if (ptr == NULL) {
			netdev_err(netdev, "Invalid product code %s\n",
				   mgp->product_code_string);
			return 0;
		}
	}
	if (*ptr == '2')
		ptr++;
	if (*ptr == 'R' || *ptr == 'Q' || *ptr == 'S') {
		/* We've found either an XFP, quad ribbon fiber, or SFP+ */
		cmd->port = PORT_FIBRE;
		cmd->supported |= SUPPORTED_FIBRE;
		cmd->advertising |= ADVERTISED_FIBRE;
	} else {
		cmd->port = PORT_OTHER;
	}
	if (*ptr == 'R' || *ptr == 'S')
		cmd->transceiver = XCVR_EXTERNAL;
	else
		cmd->transceiver = XCVR_INTERNAL;

	return 0;
}

static void
myri10ge_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info)
{
	struct myri10ge_priv *mgp = netdev_priv(netdev);

	strlcpy(info->driver, "myri10ge", sizeof(info->driver));
	strlcpy(info->version, MYRI10GE_VERSION_STR, sizeof(info->version));
	strlcpy(info->fw_version, mgp->fw_version, sizeof(info->fw_version));
	strlcpy(info->bus_info, pci_name(mgp->pdev), sizeof(info->bus_info));
}

static int
myri10ge_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal)
{
	struct myri10ge_priv *mgp = netdev_priv(netdev);

	coal->rx_coalesce_usecs = mgp->intr_coal_delay;
	return 0;
}

static int
myri10ge_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coal)
{
	struct myri10ge_priv *mgp = netdev_priv(netdev);

	mgp->intr_coal_delay = coal->rx_coalesce_usecs;
	put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr);
	return 0;
}

static void
myri10ge_get_pauseparam(struct net_device *netdev,
			struct ethtool_pauseparam *pause)
{
	struct myri10ge_priv *mgp = netdev_priv(netdev);

	pause->autoneg = 0;
	pause->rx_pause = mgp->pause;
	pause->tx_pause = mgp->pause;
}

static int
myri10ge_set_pauseparam(struct net_device *netdev,
			struct ethtool_pauseparam *pause)
{
	struct myri10ge_priv *mgp = netdev_priv(netdev);

	if (pause->tx_pause != mgp->pause)
		return myri10ge_change_pause(mgp, pause->tx_pause);
	if (pause->rx_pause != mgp->pause)
		return myri10ge_change_pause(mgp, pause->rx_pause);
	if (pause->autoneg != 0)
		return -EINVAL;
	return 0;
}

static void
myri10ge_get_ringparam(struct net_device *netdev,
		       struct ethtool_ringparam *ring)
{
	struct myri10ge_priv *mgp = netdev_priv(netdev);

	ring->rx_mini_max_pending = mgp->ss[0].rx_small.mask + 1;
	ring->rx_max_pending = mgp->ss[0].rx_big.mask + 1;
	ring->rx_jumbo_max_pending = 0;
	ring->tx_max_pending = mgp->ss[0].tx.mask + 1;
	ring->rx_mini_pending = ring->rx_mini_max_pending;
	ring->rx_pending = ring->rx_max_pending;
	ring->rx_jumbo_pending = ring->rx_jumbo_max_pending;
	ring->tx_pending = ring->tx_max_pending;
}

static u32 myri10ge_get_rx_csum(struct net_device *netdev)
{
	struct myri10ge_priv *mgp = netdev_priv(netdev);

	if (mgp->csum_flag)
		return 1;
	else
		return 0;
}

static int myri10ge_set_rx_csum(struct net_device *netdev, u32 csum_enabled)
{
	struct myri10ge_priv *mgp = netdev_priv(netdev);
	int err = 0;

	if (csum_enabled)
		mgp->csum_flag = MXGEFW_FLAGS_CKSUM;
	else {
		netdev->features &= ~NETIF_F_LRO;
		mgp->csum_flag = 0;

	}
	return err;
}

static int myri10ge_set_tso(struct net_device *netdev, u32 tso_enabled)
{
	struct myri10ge_priv *mgp = netdev_priv(netdev);
	unsigned long flags = mgp->features & (NETIF_F_TSO6 | NETIF_F_TSO);

	if (tso_enabled)
		netdev->features |= flags;
	else
		netdev->features &= ~flags;
	return 0;
}

static const char myri10ge_gstrings_main_stats[][ETH_GSTRING_LEN] = {
	"rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
	"tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
	"rx_length_errors", "rx_over_errors", "rx_crc_errors",
	"rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
	"tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
	"tx_heartbeat_errors", "tx_window_errors",
	/* device-specific stats */
	"tx_boundary", "WC", "irq", "MSI", "MSIX",
	"read_dma_bw_MBs", "write_dma_bw_MBs", "read_write_dma_bw_MBs",
	"serial_number", "watchdog_resets",
#ifdef CONFIG_MYRI10GE_DCA
	"dca_capable_firmware", "dca_device_present",
#endif
	"link_changes", "link_up", "dropped_link_overflow",
	"dropped_link_error_or_filtered",
	"dropped_pause", "dropped_bad_phy", "dropped_bad_crc32",
	"dropped_unicast_filtered", "dropped_multicast_filtered",
	"dropped_runt", "dropped_overrun", "dropped_no_small_buffer",
	"dropped_no_big_buffer"
};

static const char myri10ge_gstrings_slice_stats[][ETH_GSTRING_LEN] = {
	"----------- slice ---------",
	"tx_pkt_start", "tx_pkt_done", "tx_req", "tx_done",
	"rx_small_cnt", "rx_big_cnt",
	"wake_queue", "stop_queue", "tx_linearized", "LRO aggregated",
	    "LRO flushed",
	"LRO avg aggr", "LRO no_desc"
};

#define MYRI10GE_NET_STATS_LEN      21
#define MYRI10GE_MAIN_STATS_LEN  ARRAY_SIZE(myri10ge_gstrings_main_stats)
#define MYRI10GE_SLICE_STATS_LEN  ARRAY_SIZE(myri10ge_gstrings_slice_stats)

static void