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path: root/drivers/net/pasemi_mac.c
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2008-12-28net: Fix unused variable warnings in pasemi_mac.c and spider_net.cDavid S. Miller
As reported by Stephen Rothwell: -------------------- Today's linux-next build (powerpc ppc64_defconfig) produced these new warnings: drivers/net/pasemi_mac.c: In function 'pasemi_mac_rx_intr': drivers/net/pasemi_mac.c:957: warning: unused variable 'dev' drivers/net/pasemi_mac.c: In function 'pasemi_mac_poll': drivers/net/pasemi_mac.c:1637: warning: unused variable 'dev' drivers/net/spider_net.c: In function 'spider_net_poll': drivers/net/spider_net.c:1280: warning: unused variable 'netdev' Probably caused by commit 908a7a16b852ffd618a9127be8d62432182d81b4 ("net: Remove unused netdev arg from some NAPI interfaces"). -------------------- Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-22net: Remove unused netdev arg from some NAPI interfaces.Neil Horman
When the napi api was changed to separate its 1:1 binding to the net_device struct, the netif_rx_[prep|schedule|complete] api failed to remove the now vestigual net_device structure parameter. This patch cleans up that api by properly removing it.. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-10net: struct device - replace bus_id with dev_name(), dev_set_name()Kay Sievers
Acked-by: Marcel Holtmann <marcel@holtmann.org> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-27net: convert print_mac to %pMJohannes Berg
This converts pretty much everything to print_mac. There were a few things that had conflicts which I have just dropped for now, no harm done. I've built an allyesconfig with this and looked at the files that weren't built very carefully, but it's a huge patch. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-26dma-mapping: add the device argument to dma_mapping_error()FUJITA Tomonori
Add per-device dma_mapping_ops support for CONFIG_X86_64 as POWER architecture does: This enables us to cleanly fix the Calgary IOMMU issue that some devices are not behind the IOMMU (http://lkml.org/lkml/2008/5/8/423). I think that per-device dma_mapping_ops support would be also helpful for KVM people to support PCI passthrough but Andi thinks that this makes it difficult to support the PCI passthrough (see the above thread). So I CC'ed this to KVM camp. Comments are appreciated. A pointer to dma_mapping_ops to struct dev_archdata is added. If the pointer is non NULL, DMA operations in asm/dma-mapping.h use it. If it's NULL, the system-wide dma_ops pointer is used as before. If it's useful for KVM people, I plan to implement a mechanism to register a hook called when a new pci (or dma capable) device is created (it works with hot plugging). It enables IOMMUs to set up an appropriate dma_mapping_ops per device. The major obstacle is that dma_mapping_error doesn't take a pointer to the device unlike other DMA operations. So x86 can't have dma_mapping_ops per device. Note all the POWER IOMMUs use the same dma_mapping_error function so this is not a problem for POWER but x86 IOMMUs use different dma_mapping_error functions. The first patch adds the device argument to dma_mapping_error. The patch is trivial but large since it touches lots of drivers and dma-mapping.h in all the architecture. This patch: dma_mapping_error() doesn't take a pointer to the device unlike other DMA operations. So we can't have dma_mapping_ops per device. Note that POWER already has dma_mapping_ops per device but all the POWER IOMMUs use the same dma_mapping_error function. x86 IOMMUs use device argument. [akpm@linux-foundation.org: fix sge] [akpm@linux-foundation.org: fix svc_rdma] [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix bnx2x] [akpm@linux-foundation.org: fix s2io] [akpm@linux-foundation.org: fix pasemi_mac] [akpm@linux-foundation.org: fix sdhci] [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix sparc] [akpm@linux-foundation.org: fix ibmvscsi] Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Avi Kivity <avi@qumranet.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-04pasemi_mac: Access iph->tot_len with correct endiannessRoland Dreier
iph->tot_len is stored in network byte order, so access it using ntohs(). This doesn't have any real world impact on pasemi_mac, since the device only exists as part of a big-endian system-on-chip, but fixing this gets rid of a sparse warning and avoids having a bad example in the tree. Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-21Merge branch 'master' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (202 commits) [POWERPC] Fix compile breakage for 64-bit UP configs [POWERPC] Define copy_siginfo_from_user32 [POWERPC] Add compat handler for PTRACE_GETSIGINFO [POWERPC] i2c: Fix build breakage introduced by OF helpers [POWERPC] Optimize fls64() on 64-bit processors [POWERPC] irqtrace support for 64-bit powerpc [POWERPC] Stacktrace support for lockdep [POWERPC] Move stackframe definitions to common header [POWERPC] Fix device-tree locking vs. interrupts [POWERPC] Make pci_bus_to_host()'s struct pci_bus * argument const [POWERPC] Remove unused __max_memory variable [POWERPC] Simplify xics direct/lpar irq_host setup [POWERPC] Use pseries_setup_i8259_cascade() in pseries_mpic_init_IRQ() [POWERPC] Turn xics_setup_8259_cascade() into a generic pseries_setup_i8259_cascade() [POWERPC] Move xics_setup_8259_cascade() into platforms/pseries/setup.c [POWERPC] Use asm-generic/bitops/find.h in bitops.h [POWERPC] 83xx: mpc8315 - fix USB UTMI Host setup [POWERPC] 85xx: Fix the size of qe muram for MPC8568E [POWERPC] 86xx: mpc86xx_hpcn - Temporarily accept old dts node identifier. [POWERPC] 86xx: mark functions static, other minor cleanups ...
2008-04-16phy: Change mii_bus id field to a stringAndy Fleming
Having the id field be an int was making more complex bus topologies excessively difficult. For now, just convert it to a string, and change all instances of "bus->id = val" to snprintf(id, MII_BUS_ID_LEN, "%x", val). Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-07pasemi_mac: Netpoll supportNate Case
Add netpoll support to allow use of netconsole. Signed-off-by: Nate Case <ncase@xes-inc.com> Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Jeff Garzik <jgarzik@pobox.com>
2008-04-07pasemi_mac: Jumbo frame bugfixesOlof Johansson
Fix a couple of corner cases around interface up/down when jumbo frames are configured. Resources weren't always freed and reallocated properly. Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Jeff Garzik <jgarzik@pobox.com>
2008-03-05pasemi_mac: basic ethtool supportOlof Johansson
First cut at ethtool support, to be completed over time. Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Jeff Garzik <jgarzik@pobox.com>
2008-03-05pasemi_mac: Enable GSO by defaultOlof Johansson
Ethtool support will handle the runtime toggling, but we do quite a bit better with it on by default so just leave it on for now. Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Jeff Garzik <jgarzik@pobox.com>
2008-03-05pasemi_mac: jumbo frame supportOlof Johansson
First cut at jumbo frame support. To support large MTU, one or several separate channels must be allocated to calculate the TCP/UDP checksum separately, since the mac lacks enough buffers to hold a whole packet while it's being calculated. Furthermore, it seems that a single function channel is not quite enough to feed one of the 10Gig links, so allocate two channels for XAUI interfaces. Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Jeff Garzik <jgarzik@pobox.com>
2008-03-05pasemi_mac: Move RX/TX section enablement to dma_libOlof Johansson
Also stop both rx and tx sections before changing the configuration of the dma device during init. Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Jeff Garzik <jgarzik@pobox.com>
2008-02-03pasemi_mac: Disable interface on closeOlof Johansson
Turns out we never disable the interface. It doesn't really cause any problems since the channel is off, but it's still better to do it this way. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-03pasemi_mac: add support for setting MTUOlof Johansson
Currently keeping it at 1500 bytes or below since jumbo frames need special checksum offload on TX. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-03pasemi_mac: Add support for changing mac addressOlof Johansson
Straightforward. It used to be hardcoded and impossible to override with ifconfig. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28pasemi_mac: Don't enable RX/TX without a link (if possible)Olof Johansson
pasemi_mac: Don't enable RX/TX without a link (if possible) Don't enable RX/TX of packets until we have a link, since there's a chance we'll just get RX frame errors, etc. The case where we don't have a PHY we can't do much about: Just enable it and deal with errors as they come in. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28pasemi_mac: Print warning when not attaching to a PHYOlof Johansson
pasemi_mac: Print warning when not attaching to a PHY Print a warning on the console when not connecting to a phy for an interface. It turns out to be a pretty common problem when someone gets the MDIO info wrong in their device tree, resulting in the macs running at a fixed 1Gbit FD. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28pasemi_mac: Remove SKB copy/recycle logicOlof Johansson
pasemi_mac: Remove SKB copy/recycle logic It doesn't really buy us much, since copying is about as expensive as the allocation in the first place. Just remove it for now. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28pasemi_mac: SKB unmap optimizationOlof Johansson
pasemi_mac: SKB unmap optimization Avoid touching skb_shinfo() in the unmap path, since it turns out to normally cause cache misses and delays. instead, save number of fragments in the TX_RING_INFO structures since that's all that's needed anyway. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28pasemi_mac: Software-based LRO supportOlof Johansson
pasemi_mac: Software-based LRO support Implement LRO for pasemi_mac. Pretty straightforward. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28pasemi_mac: Improve RX interrupt mitigationOlof Johansson
pasemi_mac: Improve RX interrupt mitigation Currently the receive side interrupts will go off on the reception of a packet, NAPI will poll the ring and keep polling as long as there's a decent amount of packets to receive. This is less than optimal, especially for LRO where it's better if we have a more substantial amount of packets to process at once, to get the real LRO benefits. So, set the count threshold to a higher value and use the timeout feature that will give us an interrupt even if not enough packets have come in to set off the count threshold. FIXME: It'd be real nice to have ethtool support for users to tune this at runtime. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28pasemi_mac: Fix TX cleaningOlof Johansson
pasemi_mac: Fix TX cleaning This is a bit awkward. We don't have a timer-delayed interrupt on TX complete, but we have a count threshold. So set that reasonably high (32 packets), and schedule the NAPI poll when it goes off. Also bump a regular timer that will take care of rotting packets for the last 1..31 ones in case we don't trigger a TX interrupt (and there's no RX activity that would otherwise trigger the poll). The longer-term fix is to separate TX from RX NAPI and do two separate poll loops. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28pasemi_mac: performance tweaksOlof Johansson
pasemi_mac: performance tweaks * Seems like we do better with a smaller RX ring, probably because chances of still having the SKB cached are better * Const-ify variables to get better code generation and fewer reloads * Move prefetching around a little, and try to prefetch the whole SKB * Set NETIF_F_HIGHDMA * Misc other minor tweaks Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28pasemi_mac: Convert to new dma libraryOlof Johansson
pasemi_mac: Convert to new dma library Convert the pasemi_mac driver to the new platform global DMA manaagement library. This also does a couple of other minor cleanups w.r.t. channel management. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28pasemi_mac: Move register definitions to include/asm-powerpcOlof Johansson
pasemi_mac: Move register definitions to include/asm-powerpc Move the common register formats and descriptor layouts from drivers/net/pasemi_mac.h to include/asm-poewrpc/pasemi_dma.h Previously only the ethernet driver was using them, but other drivers are coming up that will also use them, so it makes sense to share the constants. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28pasemi_mac: RX/TX ring management cleanupOlof Johansson
pasemi_mac: RX/TX ring management cleanup Prepare a bit for supporting multiple TX queues by cleaning up some of the ring management and shuffle things around a bit. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04pasemi_mac: Fix reuse of free'd skbOlof Johansson
Turns out we're freeing the skb when we detect CRC error, but we're not clearing out info->skb. We could either clear it and have the stack reallocate it, or just leave it and the rx ring refill code will reuse the one that was allocated. Reusing a freed skb obviously caused some nasty crashes of various kind, as reported by Brent Baude and David Woodhouse. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-04Don't claim to do IPv6 checksum offloadDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-11-10pasemi_mac: Fix CRC checksOlof Johansson
Make sure we don't feed packets with bad CRC up the network stack, and discount the packet length as reported from the MAC for the CRC field. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-11-10pasemi_mac: Don't set replace-source-address descriptor bitsOlof Johansson
Don't use the "replace source address with local MAC address" bits, since it causes problems on some variations of the hardware due to an erratum. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-23pasemi_mac: fix typoOlof Johansson
Add missing &: drivers/net/pasemi_mac.c: In function 'pasemi_mac_clean_rx': drivers/net/pasemi_mac.c:553: warning: passing argument 1 of 'prefetch' makes pointer from integer without a cast Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10pasemi_mac: enable iommu supportOlof Johansson
pasemi_mac: enable iommu support Enable IOMMU support for pasemi_mac, but avoid using it on non-partitioned systems for performance reasons. The user can override this by selecting the PPC_PASEMI_IOMMU_DMA_FORCE configuration option. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10pasemi_mac: use buffer index pointer in clean_rx()Olof Johansson
pasemi_mac: use buffer index pointer in clean_rx() Use the new features in B0 for buffer ring index on the receive side. This means we no longer have to search in the ring for where the buffer came from. Also cleanup the RX cleaning side a little, while I was at it. Note: Pre-B0 hardware is no longer supported, and needs a pile of other workarounds that are not being submitted for mainline inclusion. So the fact that this breaks old hardware is not a problem at this time. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10pasemi_mac: clear out old errors on interface openOlof Johansson
pasemi_mac: clear out old errors on interface open Clear out any pending errors when an interface is brought up. Since the bits are sticky, they might be from interface shutdown time after firmware has used it, etc. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10pasemi_mac: update todo listOlof Johansson
pasemi_mac: update todo list Remove some stale todo items that have been taken care of. Add a couple of upcoming ones. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10pasemi_mac: further performance tweaksOlof Johansson
pasemi_mac: further performance tweaks Misc driver tweaks for pasemi_mac: * Increase ring size (really needed mostly on 10G) * Take out an unneeded barrier * Move around a few prefetches and reorder a few calls * Don't try to clean on full tx buffer, just let things take their course and stop the queue directly * Avoid filling on the same line as the interface is working on to reduce cache line bouncing * Avoid unneeded clearing of software state (and make the interface shutdown code handle it) * Fix up some of the tx ring wrap logic. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10pasemi_mac: add local skb alignmentOlof Johansson
pasemi_mac: add local skb alignment Add local SKB alignment to pasemi_mac, since ppc64 in general has it at 0 because of design flaws in some of the IBM server bridge chips. However, for PWRficient doing the unaligned copies is more expensive than doing unaligned DMA so make sure the data is aligned instead. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10pasemi_mac: workaround for erratum 5971Olof Johansson
pasemi_mac: workaround for erratum 5971 Implement workarounds for erratum 5971, where L2 hints aren't considered properly unless the way hint is enabled on the interface. Since L2 isn't setup to dedicate a way to headers, we need to reset the packet count by hand so it won't run out of credits. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10pasemi_mac: implement sg supportOlof Johansson
pasemi_mac: implement sg support Implement SG support for pasemi_mac Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10pasemi_mac: rework ring managementOlof Johansson
pasemi_mac: rework ring management Rework ring management, switching to an opaque ring format instead of the struct-based descriptor+pointer setup, since it will be needed for SG support. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10pasemi_mac: fix bug in receive buffer dma mappingOlof Johansson
pasemi_mac: fix bug in receive buffer dma mapping skb->len isn't actually set to the size of the allocated skb, so don't try to use it when figuring out how much to map. (This hasn't surfaced as a real bug because we effectively disable translation for the interface, but it still needs fixing for the future) Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10pasemi_mac: basic error checkingOlof Johansson
pasemi_mac: basic error checking Add some rudimentary error checking to pasemi_mac. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10pasemi_mac: pass in count of buffers to replenish rx ring withOlof Johansson
pasemi_mac: pass in count of buffers to replenish rx ring with Refactor replenish_rx_ring to take an argument for how many entries to fill. Since it's normally available from where it's called anyway, this is just simpler. It also removes the awkward logic to try to figure out if we're filling for the first time or not. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10pasemi_mac: don't enable rx before there are buffers on the ringOlof Johansson
pasemi_mac: don't enable rx before there are buffers on the ring Reorder initialization of the DMA channels and the interface. Before there was a time window when the interface was enabled before DMA was enabled. Also, now there will always be RX buffers available at the time the MAC interface is enabled, to avoid temporary out-of-buffer errors for the very first packets (on busy networks). Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10pasemi_mac: flags as passed to spin_*_irqsave() should be unsigned longOlof Johansson
pasemi_mac: flags as passed to spin_*_irqsave() should be unsigned long. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10pasemi_mac: set interface speed correctly on XAUI portsOlof Johansson
pasemi_mac: set interface speed correctly on XAUI ports Set interface speed for XAUI to 10G per default, not 1G. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10[PASEMI_MAC]: remove unused functionSatyam Sharma
drivers/net/pasemi_mac.c: At top level: drivers/net/pasemi_mac.c:89: warning: 'read_iob_reg' defined but not used Signed-off-by: Satyam Sharma <satyam@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.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>