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path: root/drivers/net/gianfar.h
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2011-07-22gianfar: do vlan cleanupJiri Pirko1-2/+1
- unify vlan and nonvlan rx path - kill priv->vlgrp and gfar_vlan_rx_register - allow to turn on/off rx/tx vlan accel via ethtool Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-22Merge branch 'master' of ↵David S. Miller1-1/+2
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: net/bluetooth/l2cap_core.c
2011-07-16gianfar: rx parserSebastian Pöhn1-1/+2
Only let the rx parser be enabled if it is necessary (if VLAN extraction, IP or TCP checksumming or the rx queue filer are enabled). Otherwise disable it. The new routine gfar_check_rx_parser_mode should be run after every change on this features and will enable/disable the parser as necessary. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: Sebastian Poehn <sebastian.poehn@belden.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-07gianfar v2: code cleanupsSebastian Poehn1-0/+1
This patch: # improves readability of some gianfar nfc code Signed-off-by: Sebastian Poehn <sebastian.poehn@belden.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-21Merge branch 'master' of ↵David S. Miller1-3/+5
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/wireless/iwlwifi/iwl-agn-rxon.c drivers/net/wireless/rtlwifi/pci.c net/netfilter/ipvs/ip_vs_core.c
2011-06-21gianfar v5: implement nfcSebastian Poehn1-0/+53
This patch adds all missing functionalities for nfc except GRXFH. There is so much code because hardware has not a TCAM. Further hardware rule space is very limited. So I had to extensively use optimization features. Both reasons lead to the necessity to hold all online flows in a linked-list. Change-log: # Some suggestions by Joe Perches applied (thanks!) # Shorted some logs # Use memcmp() for comparing Signed-off-by: Sebastian Poehn <sebastian.poehn@belden.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-09gianfar:localized filer tableWu Jiajun-B063781-3/+5
Each eTSEC device should own localized filer table. Signed-off-by: Jiajun Wu <b06378@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-16net: gianfar: convert to hw_featuresMichał Mirosław1-1/+2
Note: I bet that gfar_set_features() don't really need a full reset. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-12Merge branch 'master' of ↵David S. Miller1-1/+1
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/smsc911x.c
2011-04-12gianfar: Clean up implementation of RX network flow classificationBen Hutchings1-17/+0
This code was cribbed from niu, so gfar_set_hash_opts() begins by converting the ethtool flow class code into a class code for Sun Neptune hardware, then does the same thing again for the hardware it's really dealing with. It may also return -1 (-EPERM) for some unhandled ethtool flow class codes. Remove the useless code and definitions, and fix the error code. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-31Fix common misspellingsLucas De Marchi1-1/+1
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-19gianfar: Fall back to software tcp/udp checksum on older controllersAlex Dubov1-0/+1
As specified by errata eTSEC49 of MPC8548 and errata eTSEC12 of MPC83xx, older revisions of gianfar controllers will be unable to calculate a TCP/UDP packet checksum for some alignments of the appropriate FCB. This patch checks for FCB alignment on such controllers and falls back to software checksumming if the alignment is known to be bad. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-14net: remove dev_txq_stats_fold()Eric Dumazet1-0/+10
After recent changes, (percpu stats on vlan/tunnels...), we dont need anymore per struct netdev_queue tx_bytes/tx_packets/tx_dropped counters. Only remaining users are ixgbe, sch_teql, gianfar & macvlan : 1) ixgbe can be converted to use existing tx_ring counters. 2) macvlan incremented txq->tx_dropped, it can use the dev->stats.tx_dropped counter. 3) sch_teql : almost revert ab35cd4b8f42 (Use net_device internal stats) Now we have ndo_get_stats64(), use it, even for "unsigned long" fields (No need to bring back a struct net_device_stats) 4) gianfar adds a stats structure per tx queue to hold tx_bytes/tx_packets This removes a lockdep warning (and possible lockup) in rndis gadget, calling dev_get_stats() from hard IRQ context. Ref: http://www.spinics.net/lists/netdev/msg149202.html Reported-by: Neil Jones <neiljay@gmail.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Jarek Poplawski <jarkao2@gmail.com> CC: Alexander Duyck <alexander.h.duyck@intel.com> CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com> CC: Sandeep Gopalpet <sandeep.kumar@freescale.com> CC: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-06of/device: Replace struct of_device with struct platform_deviceGrant Likely1-1/+1
of_device is just an alias for platform_device, so remove it entirely. Also replace to_of_device() with to_platform_device() and update comment blocks. This patch was initially generated from the following semantic patch, and then edited by hand to pick up the bits that coccinelle didn't catch. @@ @@ -struct of_device +struct platform_device Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Reviewed-by: David S. Miller <davem@davemloft.net>
2010-06-30gianfar: Implement workaround for eTSEC-A002 erratumAnton Vorontsov1-0/+1
MPC8313ECE says: "If the controller receives a 1- or 2-byte frame (such as an illegal runt packet or a packet with RX_ER asserted) before GRS is asserted and does not receive any other frames, the controller may fail to set GRSC even when the receive logic is completely idle. Any subsequent receive frame that is larger than two bytes will reset the state so the graceful stop can complete. A MAC receiver (Rx) reset will also reset the state." This patch implements the proposed workaround: "If IEVENT[GRSC] is still not set after the timeout, read the eTSEC register at offset 0xD1C. If bits 7-14 are the same as bits 23-30, the eTSEC Rx is assumed to be idle and the Rx can be safely reset. If the register fields are not equal, wait for another timeout period and check again." Signed-off-by: Anton Vorontsov <avorontsov@mvista.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-30gianfar: Implement workaround for eTSEC76 erratumAnton Vorontsov1-0/+1
MPC8313ECE says: "For TOE=1 huge or jumbo frames, the data required to generate the checksum may exceed the 2500-byte threshold beyond which the controller constrains itself to one memory fetch every 256 eTSEC system clocks. This throttling threshold is supposed to trigger only when the controller has sufficient data to keep transmit active for the duration of the memory fetches. The state machine handling this threshold, however, fails to take large TOE frames into account. As a result, TOE=1 frames larger than 2500 bytes often see excess delays before start of transmission." This patch implements the workaround as suggested by the errata document, i.e.: "Limit TOE=1 frames to less than 2500 bytes to avoid excess delays due to memory throttling. When using packets larger than 2700 bytes, it is recommended to turn TOE off." To be sure, we limit the TOE frames to 2500 bytes, and do software checksumming instead. Signed-off-by: Anton Vorontsov <avorontsov@mvista.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-30gianfar: Implement workaround for eTSEC74 erratumAnton Vorontsov1-0/+11
MPC8313ECE says: "If MACCFG2[Huge Frame]=0 and the Ethernet controller receives frames which are larger than MAXFRM, the controller truncates the frames to length MAXFRM and marks RxBD[TR]=1 to indicate the error. The controller also erroneously marks RxBD[TR]=1 if the received frame length is MAXFRM or MAXFRM-1, even though those frames are not truncated. No truncation or truncation error occurs if MACCFG2[Huge Frame]=1." There are two options to workaround the issue: "1. Set MACCFG2[Huge Frame]=1, so no truncation occurs for invalid large frames. Software can determine if a frame is larger than MAXFRM by reading RxBD[LG] or RxBD[Data Length]. 2. Set MAXFRM to 1538 (0x602) instead of the default 1536 (0x600), so normal-length frames are not marked as truncated. Software can examine RxBD[Data Length] to determine if the frame was larger than MAXFRM-2." This patch implements the first workaround option by setting HUGEFRAME bit, and gfar_clean_rx_ring() already checks the RxBD[Data Length]. Signed-off-by: Anton Vorontsov <avorontsov@mvista.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-13gianfar: Add hardware TX timestamping supportManfred Rudigier1-1/+2
If a packet has the skb_shared_tx->hardware flag set the device is instructed to generate a TX timestamp and write it back to memory after the frame is transmitted. During the clean_tx_ring operation the timestamp will be extracted and copied into the skb_shared_hwtstamps struct of the skb. TX timestamping is enabled by setting the tx_type to something else than HWTSTAMP_TX_OFF with the SIOCSHWTSTAMP ioctl command. It is only supported by eTSEC devices. Signed-off-by: Manfred Rudigier <manfred.rudigier@omicron.at> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-13gianfar: Add hardware RX timestamping supportManfred Rudigier1-0/+5
The device is configured to insert hardware timestamps into all received packets. The RX timestamps are extracted from the padding alingment bytes during the clean_rx_ring operation and copied into the skb_shared_hwtstamps struct of the skb. This extraction only happens if the rx_filter was set to something else than HWTSTAMP_FILTER_NONE with the SIOCSHWTSTAMP ioctl command. Hardware timestamping is only supported for eTSEC devices. To indicate device support the new FSL_GIANFAR_DEV_HAS_TIMER flag was introduced. Signed-off-by: Manfred Rudigier <manfred.rudigier@omicron.at> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-27gianfar: fix undo of reserve()Ben Menchaca1-0/+6
Fix undo of reserve() before RX recycle gfar_new_skb reserve()s space in the SKB to align it. If an error occurs, and the skb needs to be returned to the RX recycle queue, the current code attempts to reset head, but did not reset tail. This patch remembers the alignment amount, and reverses the reserve() when needed. Signed-off-by: Ben Menchaca <ben@bigfootnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-19gianfar: Fix bit definitions of IMASK_GRSC and IMASK_GTSCSandeep Gopalpet1-2/+2
Signed-off-by: Sandeep Gopalpet <Sandeep.Kumar@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-19gianfar: Fix stats supportSandeep Gopalpet1-0/+10
This patch updates the per rx/tx queue stats. To update the per rx queue stats a new structure has been introduced rx_q_stats. The per tx queue stats are updated via the netdev_queue structure itself. Note that we update only the tx_packtes, tx_bytes, rx_packets, rx_bytes and rx_dropped stats on a per queue basis. Signed-off-by: Sandeep Gopalpet <Sandeep.Kumar@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-19gianfar: Fix a filer bugSandeep Gopalpet1-0/+4
We need to enable filer whenever we need to use multiple RX queues. Also, need to program RIR0 register with the required distribution we require, if using RX filer hashing support for packet distribution to multiple queues. Signed-off-by: Sandeep Gopalpet <Sandeep.Kumar@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-08gianfar: Fix compiler and sparse warningsAnton Vorontsov1-5/+5
commit fba4ed030cfae7efdb6b79a57b0c5a9d72c9de83 ("gianfar: Add Multiple Queue Support") introduced the following warnings: CHECK gianfar.c gianfar.c:333:8: warning: incorrect type in assignment (different address spaces) gianfar.c:333:8: expected unsigned int [usertype] *baddr gianfar.c:333:8: got unsigned int [noderef] <asn:2>*<noident> [... 67 lines skipped ...] gianfar.c:2565:3: warning: incorrect type in argument 1 (different type sizes) gianfar.c:2565:3: expected unsigned long const *addr gianfar.c:2565:3: got unsigned int *<noident> CC gianfar.o gianfar.c: In function 'gfar_probe': gianfar.c:985: warning: passing argument 1 of 'find_next_bit' from incompatible pointer type gianfar.c:985: warning: passing argument 1 of 'find_next_bit' from incompatible pointer type gianfar.c:993: warning: passing argument 1 of 'find_next_bit' from incompatible pointer type gianfar.c:993: warning: passing argument 1 of 'find_next_bit' from incompatible pointer type gianfar.c: In function 'gfar_configure_coalescing': gianfar.c:1680: warning: passing argument 1 of 'find_next_bit' from incompatible pointer type gianfar.c:1680: warning: passing argument 1 of 'find_next_bit' from incompatible pointer type gianfar.c:1688: warning: passing argument 1 of 'find_next_bit' from incompatible pointer type gianfar.c:1688: warning: passing argument 1 of 'find_next_bit' from incompatible pointer type gianfar.c: In function 'gfar_poll': gianfar.c:2565: warning: passing argument 1 of 'find_next_bit' from incompatible pointer type gianfar.c:2565: warning: passing argument 1 of 'find_next_bit' from incompatible pointer type gianfar.c:2566: warning: passing argument 2 of 'test_bit' from incompatible pointer type gianfar.c:2585: warning: passing argument 2 of 'set_bit' from incompatible pointer type Following warnings left unfixed (looks like sparse doesn't like locks in loops, so __acquires/__releases() doesn't help): gianfar.c:441:40: warning: context imbalance in 'lock_rx_qs': wrong count at exit gianfar.c:441:40: context '<noident>': wanted 0, got 1 gianfar.c:449:40: warning: context imbalance in 'lock_tx_qs': wrong count at exit gianfar.c:449:40: context '<noident>': wanted 0, got 1 gianfar.c:458:3: warning: context imbalance in 'unlock_rx_qs': __context__ statement expected different context gianfar.c:458:3: context '<noident>': wanted >= 0, got -1 gianfar.c:466:3: warning: context imbalance in 'unlock_tx_qs': __context__ statement expected different context gianfar.c:466:3: context '<noident>': wanted >= 0, got -1 Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-03gianfar: Basic Support for programming hash rulesSandeep Gopalpet1-0/+93
This patch provides basic hash rules programming via the ethtool interface. Signed-off-by: Sandeep Gopalpet <Sandeep.Kumar@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-03gianfar: Add Multiple group SupportSandeep Gopalpet1-1/+28
This patch introduces multiple group support for etsec2.0 devices. Multiple group support is provided by mapping the set of enabled queues to different groups and then programming the per group regsiters imask, ievent, rstat, tstat. The queues corresponding to a group are indicated by programming isrg (interrupt steering) registers. Signed-off-by: Sandeep Gopalpet <Sandeep.Kumar@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-03gianfar: Add support etsec2.0 registers.Sandeep Gopalpet1-11/+44
This patch adds support for etsec2.0 regsiters Signed-off-by: Sandeep Gopalpet <Sandeep.Kumar@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-03gianfar: Add Multiple Queue SupportSandeep Gopalpet1-5/+91
This patch introduces multiple Tx and Rx queues. The incoming packets can be classified into different queues based on filer rules (out of scope of this patch). The number of queues enabled will be based on a DTS entries fsl,num_tx_queues and fsl,num_rx_queues. Although we are enabling multiple queues, the interrupt coalescing is on per device level (etsec-1.7 doesn't support multiple rxics and txics). Signed-off-by: Sandeep Gopalpet <Sandeep.Kumar@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-03gianfar: Introduce logical group support.Sandeep Gopalpet1-11/+27
This patch introduces the group structure. The elements of this structure are the interrupt lines, their corresponding names, the register memory map. The elements for this group are factored out from the gfar_private structure. The introduction of group structure will help in providing support for newer versions of etsec. Currently, the support is present only for single group and single tx/rx queues. Signed-off-by: Sandeep Gopalpet <Sandeep.Kumar@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-03gianfar: Add per queue structure supportSandeep Gopalpet1-41/+75
This patch introduces per tx and per rx queue structures. Earlier the members of these structures were inside the gfar_private structure. Moving forward if we want to support multiple queues, we need to refactor the gfar_private structure so that introduction of multiple queues is easier. Signed-off-by: Sandeep Gopalpet <Sandeep.Kumar@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-13gianfar: Move tbase/rbase initialization to gfar_init_mac()Anton Vorontsov1-0/+1
For hibernation we want to call gfar_init_mac() without need to free/allocate_skb_resources sequence, so save the DMA address into a private struct, and move tbase/rbase initialization to gfar_init_mac(). Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-03Merge branch 'master' of ↵David S. Miller1-1/+1
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/forcedeth.c
2009-05-27gianfar: fix babbling rx error event bugXiaotian Feng1-1/+1
Gianfar interrupt handler uses IEVENT_ERR_MASK to check and handle errors. Babbling RX error (IEVENT_BABR) should be included in IEVENT_ERROR_MASK. Otherwise if BABR is raised, it never gets handled nor cleared, and an interrupt storm results. This has been observed to happen on sending a burst of ethernet frames to a gianfar based board. Signed-off-by: Xiaotian Feng <xiaotian.feng@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-27net: Rework gianfar driver to use of_mdio infrastructure.Grant Likely1-2/+2
This patch simplifies the driver by making use of more common code. Tested on Freescale MPC8349emitxgp eval board Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-02gianfar: Remove unused headerKumar Gala1-1/+0
Now that the driver is exclusively an of_platform driver we no longer use the structs and #defines in fsl_devices.h Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-19gianfar: pass the proper dev to DMA opsKumar Gala1-1/+2
We need to be passing the of_platform device struct into the DMA ops as its the one that has the archdata setup to know which low-level DMA ops we should be using (not the net_device one). This isn't an issue until we expect the archdata to be setup correctly. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-05Merge branch 'master' of ↵David S. Miller1-1/+1
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
2009-02-05gianfar: Add support for skb recyclingAndy Fleming1-0/+2
Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-05netdev: Merge UCC and gianfar MDIO bus driversAndy Fleming1-7/+6
The MDIO bus drivers for the UCC and gianfar ethernet controllers are essentially the same. There's no reason to duplicate that much code. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-05gianfar: Fix BD_LENGTH_MASK definitionAndy Fleming1-1/+1
BD_LENGTH_MASK is supposed to catch the low 16-bits of the status field, not the low byte. The old way, we would never be able to clean up tx packets with sizes divisible by 256. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-01gianfar: Fix sparse warningsAnton Vorontsov1-0/+2
This patch fixes following sparse warnings: CHECK gianfar_ethtool.c gianfar_ethtool.c:610:26: warning: symbol 'gfar_ethtool_ops' was not declared. Should it be static? CHECK gianfar_mii.c gianfar_mii.c:108:35: warning: cast adds address space to expression (<asn:2>) gianfar_mii.c:119:35: warning: cast adds address space to expression (<asn:2>) gianfar_mii.c:128:35: warning: cast adds address space to expression (<asn:2>) gianfar_mii.c:272:5: warning: cast removes address space of expression gianfar_mii.c:271:15: warning: cast adds address space to expression (<asn:2>) gianfar_mii.c:340:11: warning: cast adds address space to expression (<asn:2>) CHECK gianfar_sysfs.c gianfar_sysfs.c:84:1: warning: symbol 'dev_attr_bd_stash' was not declared. Should it be static? gianfar_sysfs.c:133:1: warning: symbol 'dev_attr_rx_stash_size' was not declared. Should it be static? gianfar_sysfs.c:175:1: warning: symbol 'dev_attr_rx_stash_index' was not declared. Should it be static? gianfar_sysfs.c:213:1: warning: symbol 'dev_attr_fifo_threshold' was not declared. Should it be static? gianfar_sysfs.c:250:1: warning: symbol 'dev_attr_fifo_starve' was not declared. Should it be static? gianfar_sysfs.c:287:1: warning: symbol 'dev_attr_fifo_starve_off' was not declared. Should it be static? Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-18gianfar: Merge Tx and Rx interrupt for scheduling clean up ringDai Haruki1-1/+1
No clean up function is executed in the interrupt context by this patch. Signed-off-by: Dai Haruki <dai.haruki@freescale.com> Acked-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-18gianfar: Use interface name in interrupt name to distinguish the source.Dai Haruki1-0/+7
Interface name (ex. eth0) is used as the prefix for the interrupt name, with _rx, _tx, and _er appended to distinguish multiple interrupts on the same interface. Signed-off-by: Dai Haruki <dai.haruki@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-18gianfar: Add Scatter Gather supportDai Haruki1-0/+1
Scatter Gather support in gianfar driver to handle fragmented frames on the transmit side. Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com> Signed-off-by: Dai Haruki <dai.haruki@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-17gianfar: Make all BD status writes 32-bitDai Haruki1-4/+16
Whenever we want to update the status field in a BD, we usually want to update the length field, too. By combining them into one 32-bit field, we reduce the number of stores to memory shared with the controller, and we eliminate the need for order-enforcement, as the length and "READY" bit are now updated atomically at the same time. Signed-off-by: Dai Haruki <Dai.Haruki@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-17gianfar: Add macros for stepping through BDsAndy Fleming1-0/+6
This code is based strongly on code from Dai Haruki <Dai.Haruki@freescale.com>. The gianfar Buffer Descriptors are arranged in a circular array, the end of which is denoted by setting the "WRAP" bit in the descriptor. However, the software knows the end of the ring because it knows how many descriptors are there. Rather than check each descriptor for whether the WRAP bit is set, use pointer math to determine where the next BD is. This is also useful for when we want to look at BDs other than the very next one (for Scatter-Gather). Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-17gianfar: Fix VLAN HW feature related frame/buffer size calculation.Dai Haruki1-4/+5
Optimize the VLAN checking logic as well. Signed-off-by: Dai Haruki <dai.haruki@freescale.com> Acked-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-17gianfar: Optimize interrupt coalescing configurationDai Haruki1-4/+8
Store the interrupt coalescing values in the form in which they will be written to the interrupt coalescing registers. This puts a little overhead into the ethtool configuration, and takes it out of the interrupt handler Signed-off-by: Dai Haruki <dai.haruki@freescale.com> Acked-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-17gianfar: Convert gianfar to an of_platform_driverAndy Fleming1-3/+18
Does the same for the accompanying MDIO driver, and then modifies the TBI configuration method. The old way used fields in einfo, which no longer exists. The new way is to create an MDIO device-tree node for each instance of gianfar, and create a tbi-handle property to associate ethernet controllers with the TBI PHYs they are connected to. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-27net: don't grab a mutex within a timer context in gianfarSebastian Siewior1-0/+1
I got the following backtrace while network was unavailble: |NETDEV WATCHDOG: eth0: transmit timed out |BUG: sleeping function called from invalid context at /home/bigeasy/git/linux-2.6-powerpc/kernel/mutex.c:87 |in_atomic():1, irqs_disabled():0 |Call Trace: |[c0383d90] [c0006dd8] show_stack+0x48/0x184 (unreliable) |[c0383db0] [c001e938] __might_sleep+0xe0/0xf4 |[c0383dc0] [c025a43c] mutex_lock+0x24/0x3c |[c0383de0] [c019005c] phy_stop+0x20/0x70 |[c0383df0] [c018d4ec] stop_gfar+0x28/0xf4 |[c0383e10] [c018e8c4] gfar_timeout+0x30/0x60 |[c0383e20] [c01fe7c0] dev_watchdog+0xa8/0x144 |[c0383e30] [c002f93c] run_timer_softirq+0x148/0x1c8 |[c0383e60] [c002b084] __do_softirq+0x5c/0xc4 |[c0383e80] [c00046fc] do_softirq+0x3c/0x54 |[c0383e90] [c002ac60] irq_exit+0x3c/0x5c |[c0383ea0] [c000b378] timer_interrupt+0xe0/0xf8 |[c0383ec0] [c000e5ac] ret_from_except+0x0/0x18 |[c0383f80] [c000804c] cpu_idle+0xcc/0xdc |[c0383fa0] [c025c07c] etext+0x7c/0x90 |[c0383fc0] [c0338960] start_kernel+0x294/0x2a8 |[c0383ff0] [c00003dc] skpinv+0x304/0x340 |------------[ cut here ]------------ The phylock was once a spinlock but got changed into a mutex via commit 35b5f6b1a aka [PHYLIB: Locking fixes for PHY I/O potentially sleeping] Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-08 02:31:50 +0300