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* sfc: Add SR-IOV back-end support for SFC9000 familyBen Hutchings2012-02-1613-26/+2192
| | | | | | | | | | | | | | | | | | | | | | | On the SFC9000 family, each port has 1024 Virtual Interfaces (VIs), each with an RX queue, a TX queue, an event queue and a mailbox register. These may be assigned to up to 127 SR-IOV virtual functions per port, with up to 64 VIs per VF. We allocate an extra channel (IRQ and event queue only) to receive requests from VF drivers. There is a per-port limit of 4 concurrent RX queue flushes, and queue flushes may be initiated by the MC in response to a Function Level Reset (FLR) of a VF. Therefore, when SR-IOV is in use, we submit all flush requests via the MC. The RSS indirection table is shared with VFs, so the number of RX queues used in the PF is limited to the number of VIs per VF. This is almost entirely the work of Steve Hodgson, formerly shodgson@solarflare.com. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Allocate SRAM between buffer table and descriptor caches at init timeBen Hutchings2012-02-166-14/+50
| | | | | | | | | Each port has a block of 64-bit SRAM that is divided between buffer table and descriptor cache regions at initialisation time. Currently we use a fixed allocation, but it needs to be changed to support larger numbers of queues. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Pass NIC structure into efx_wanted_parallelism()Ben Hutchings2012-02-161-4/+4
| | | | | | | This lets us identify the NIC affected in case of failure, and will be necessary to adjust for SR-IOV constraints. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Add support for 'extra' channel typesBen Hutchings2012-02-163-108/+239
| | | | | | | | | | | | | | Abstract some of the channel operations to allow for 'extra' channels that do not have RX or TX queues. - Try to assign a channel to each extra channel type that is enabled for the NIC, but gracefully degrade if we can't allocate sufficient MSI-X vectors - Allow each extra channel type to generate its own channel name - Allow channel types to disable reallocation and reinitialisation of their channels Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Make all CPU/IRQ/channel/queue counts unsignedBen Hutchings2012-02-162-9/+11
| | | | Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Make buffer table indices and counts consistently unsignedBen Hutchings2012-02-162-3/+3
| | | | Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Disable flow control during flushesSteve Hodgson2012-02-163-0/+9
| | | | | | | | | | | | | | | | The TX DMA engine issues upstream read requests when there is room in the TX FIFO for the completion. However, the fetches for the rest of the packet might be delayed by any back pressure. Since a flush must wait for an EOP, the entire flush may be delayed by back pressure. Mitigate this by disabling flow control before the flushes are started. Since PF and VF flushes run in parallel introduce fc_disable, a reference count of the number of flushes outstanding. The same principle could be applied to Falcon, but that would bring with it its own testing. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Generalise event generation to cover VF-owned event queuesBen Hutchings2012-02-162-6/+7
| | | | | | | | | | | For SR-IOV we will need to send events to event queues that belong to VFs serviced by other drivers. Change the parameters of efx_generate_event() to allow this and declare it extern. While we're at it, remove the existing declaration under the wrong name efx_nic_generate_event(). Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Use proper function to test for RX channel in efx_poll()Ben Hutchings2012-02-161-1/+1
| | | | Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Leave interrupts and event queues enabled whenever we canBen Hutchings2012-02-164-318/+308
| | | | | | | | | | | | | | | | | | | | | When SR-IOV is enabled we may receive FLR (Function-Level Reset) events, associated queue flush events and requests from VF drivers at any time. Therefore we need to keep event queues and interrupts enabled whenever possible. Currently we stop interrupt-driven event processing before flushing RX and TX queues; efx_nic_flush_queues() then polls event queues for flush events and discards any others it finds. Change it to work with the regular event handling functions. Currently efx_start_channel() fills RX queues synchronously when a device is brought up. This could now race with NAPI, so change it to send fill events. This was almost entirely written by Steve Hodgson, formerly shodgson@solarflare.com. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Generate RX fill events based on RX queues, not channelsBen Hutchings2012-02-163-9/+13
| | | | | | | This makes it harder to accidentally send such events to TX-only channels. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Generalise driver event generationBen Hutchings2012-02-161-24/+27
| | | | Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Correct MAC filter bitfield definitionsBen Hutchings2012-02-161-10/+10
| | | | | | | | | | | | | The RMFT_DEST_MAC and TMFT_SRC_MAC register fields were previously documented as 44 bits wide, whereas a MAC address has 48 bits. Thankfully the hardware uses the correct width and the driver has used separate definitions that divide each of these into 32-bit and 16-bit fields. Fix the initial definitions for these fields and rewrite the latter definitions to use them. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Add support for TX MAC filtersBen Hutchings2012-02-162-5/+72
| | | | | | | | | On Siena each TX queue can be configured to send only packets for which there is a TX MAC filter that matches the source MAC address, queue ID, and optionally VID. This will be used to implement the 'spoofchk' feature for SR-IOV virtual functions. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Add support for configuring RX unicast/multicast default filtersBen Hutchings2012-02-163-47/+214
| | | | | | | | | | | | On Siena all received packets that don't match a more specific filter will match the unicast or multicast default filter. Currently we leave these set to the default values (RSS with base queue number of 0). Allow them to be reconfigured to select a single RX queue. These default filters are programmed through the FILTER_CTL register, but we represent them internally as an additional table of size 2. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Warn if unable to create MTDsBen Hutchings2012-02-142-2/+7
| | | | | | | | Log an explicit warning if we are unable to create MTDs for a net device. Also correct the comment about why mtd_device_register() may fail; there is no longer an MTD table to fill up. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Replace some literal constants with EFX_PAGE_SIZE/EFX_BUF_SIZEBen Hutchings2012-02-143-5/+7
| | | | | | | | | | The 'page size' for PCIe DMA, i.e. the alignment of boundaries at which DMA must be broken, is 4KB. Name this value as EFX_PAGE_SIZE and use it in efx_max_tx_len(). Redefine EFX_BUF_SIZE as EFX_PAGE_SIZE since its value is also a result of that requirement, and use it in efx_init_special_buffer(). Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Do not retry hardware probe if it schedules a resetBen Hutchings2012-02-141-34/+16
| | | | | | | | | If efx_pci_probe_main() schedules an INVISIBLE or ALL reset (but nothing more drastic), we retry it up to 5 times. So far as I'm aware, this was a workaround for bugs in Falcon A0 which were fixed in production silicon. Remove the retry. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sfc: Skip RX end-of-batch work on channels without an RX queueBen Hutchings2012-02-141-10/+11
| | | | | | | | | | The code in efx_process_channel() to update the RX queue after each batch of RX completions works out as a no-op on a TX-only channel where the RX queue structure is set to all-zeroes, but (1) efx_channel_get_rx_queue() will BUG() if DEBUG is defined, and (2) it's a waste of time. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
* sonice: Fix build due to botched netdev_alloc_skb() conversion.David S. Miller2012-02-071-1/+1
| | | | | Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* sh-eth: use netdev stats structure and fix dma_map_singleEric Dumazet2012-02-072-32/+31
| | | | | | | | | | | | | | No need to maintain a parallel net_device_stats structure in sh_eth_private, since we have a generic one in netdev Fix two dma_map_single() incorrect parameters, passing skb->tail instead of skb->data. Seems that there is no corresponding dmap_unmap_single() calls for the moment in this driver. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: fec: Fix build due to wrong dev annotationFabio Estevam2012-02-071-2/+2
| | | | | | | | | | | | | | | | | | | commit 21a4e469 (netdev: ethernet dev_alloc_skb to netdev_alloc_skb) should have used "ndev" instead of "dev". This causes the following build errors: drivers/net/ethernet/freescale/fec.c: In function 'fec_enet_rx': drivers/net/ethernet/freescale/fec.c:714: error: 'dev' undeclared (first use in this function) drivers/net/ethernet/freescale/fec.c:714: error: (Each undeclared identifier is reported only once drivers/net/ethernet/freescale/fec.c:714: error: for each function it appears in.) drivers/net/ethernet/freescale/fec.c: In function 'fec_enet_alloc_buffers': drivers/net/ethernet/freescale/fec.c:1213: error: 'dev' undeclared (first use in this function) Fix it, so that fec driver can be built again. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* e1000e: minor whitespace and indentation cleanupBruce Allan2012-02-072-37/+43
| | | | | | | | Cleanup of some whitespace and indentation of a single code block. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* e1000e: fix sparse warnings with -D__CHECK_ENDIAN__Bruce Allan2012-02-072-8/+9
| | | | | | Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* e1000e: fix checkpatch warning from MINMAX testBruce Allan2012-02-071-1/+1
| | | | | | | | WARNING: min() should probably be min_t(unsigned int, 4, skb->data_len) Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* e1000e: cleanup - use braces in both branches of a conditional statementBruce Allan2012-02-071-1/+2
| | | | | | Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* e1000e: cleanup e1000_set_phys_idBruce Allan2012-02-071-2/+2
| | | | | | | | Use the existing hw pointer. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* e1000e: cleanup e1000_init_mac_params_82571()Bruce Allan2012-02-071-42/+30
| | | | | | | | | | Combine two switch statements into one, convert a nebulous pointer to one that is a bit more in keeping with the rest of the driver code and cleanup some coding style. No change in functionality, just cosmetic changes. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* e1000e: cleanup e1000_init_mac_params_80003es2lan()Bruce Allan2012-02-071-21/+7
| | | | | | | | | | | Combine two switch statements into one, convert a nebulous pointer to one that is a bit more in keeping with the rest of the driver code and remove some dead code (there are no 80003es2lan devices with fiber). No change in functionality, just cosmetic changes. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* e1000e: cleanup - check return values consistentlyBruce Allan2012-02-072-5/+5
| | | | | | | | | | | The majority of the e1000e code checks most function return values using a test like 'if (ret_val)' or 'if (!ret_val)' but there are a few instances of 'if (ret_val == 0)'. This patch converts the latter to the former for consistency. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* e1000e: add missing initializers reported when compiling with W=1Bruce Allan2012-02-071-3/+5
| | | | | | | | warning: missing initializer Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* e1000: Adding e1000_dump functionTushar Dave2012-02-073-0/+235
| | | | | | | | When TX hang occurs e1000_dump prints TX ring, RX ring and Device registers. Signed-off-by: Tushar Dave <tushar.n.dave@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* igbvf: refactor Interrupt Throttle Rate codeMitch A Williams2012-02-073-78/+99
| | | | | | | | | | | | | | | | | | The existing ITR code is broken and confusing, with lots of similarly-named variables that do different things. Additionally, after the driver carefully determines the optimal interrupt rate for the adapter, it then ignores it and always writes a fixed, suboptimal value. This patch refactors that code to make variable names more descriptive of what they actually do, and then actually writes the calculated result to the hardware. Preliminary testing shows that netperf TCP_STREAM tests goes from ~918Mbps to ~940Mbps, and TCP_RR goes from ~2k transactions/sec up to > 8k. Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Robert E Garrett <robertX.e.garrett@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* Merge branch 'master' of ↵John W. Linville2012-02-06227-3708/+4281
|\ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem Conflicts: drivers/net/wireless/rtlwifi/rtl8192se/sw.c
| * rtlwifi: Convert to asynchronous firmware loadLarry Finger2012-01-3020-164/+194
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch addresses a kernel bugzilla report and two recent mail threads. The kernel bugzilla report is https://bugzilla.kernel.org/show_bug.cgi?id=42632, which reports a udev timeout on boot. The first mail thread, which was on LKML (http://lkml.indiana.edu/hypermail/ linux/kernel/1112.3/00965.html) was for a WARNING that occurs after a suspend/resume cycle for rtl8192cu. The scond mail thread (http://marc.info/?l=linux-wireless&m=132655490826766&w=2) concerned changes in udev that break drivers that delay while firmware is loaded on modprobe. This patch converts all rtlwifi-based drivers to use the asynchronous firmware loading mechanism. Drivers rtl8192ce, rtl8192cu and rtl8192de share a common callback routine. Driver rtl8192se needs different handling of the firmware, thus it has its own code. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Cc: Stable <stable@vger.kernel.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * ath9k: Print the correct channel modeSujith Manoharan2012-01-301-3/+1
| | | | | | | | | | | | | | | | | | channelFlags doesn't contain the operating HT mode. Use IS_CHAN_HT40 to determine if the current channel is in HT40 mode. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * ath9k_htc: Load firmware asynchronouslySujith Manoharan2012-01-302-56/+101
| | | | | | | | | | | | | | | | | | This patch modifies ath9k_htc to load the needed firmware in an asynchronous manner, fixing timeouts that were introduced with the new udev changes. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * iwlwifi: always restrict scan dwell in P2PJohannes Berg2012-01-301-3/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Whenever the PAN (P2P) context is active, it has timers in the uCode that prevent sleep, so scanning can't be out of channel for more than the beacon interval programmed into the device. Before this patch, a full scan including any passive channels when P2P was active would stall forever because it wouldn't find time to execute the passive requests (for default beacon intervals of 100 TU.) Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * iwlwifi: add option to disalbe LEDWey-Yi Guy2012-01-303-1/+7
| | | | | | | | | | | | | | | | Led has no use for some platform. Add additional module parameter option to disable LED Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * iwlwifi: fix uCode event tracingJohannes Berg2012-01-303-32/+76
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix multiple bugs in event tracing: 1) If you enable uCode tracing with the device down, it will still attempt to access the device and continuously log "MAC is in deep sleep!" errors. Fix this by only starting logging when the device is actually alive. 2) Now you can set the flag when the device is down, but logging doesn't happen when you bring it up. To fix that, start logging when the device comes alive. This means we don't log before -- we could do that but I don't need it right now. 3) For some reason we read the error instead of the event log -- use the right pointer. 4) Optimise SRAM reading of event log header. 5) Fix reading write pointer == capacity, which can happen due to racy SRAM access 6) Most importantly: fix an error where we would try to read WAY too many events (like 2^32-300) when we read the wrap counter before it is updated by the uCode -- this does happen in practice and will cause the driver to hang the machine. 7) Finally, change the timer to 10ms instead of 100ms as 100ms is too slow to capture all data with a normal event log and with 100ms the log will wrap multiple times before we have a chance to read it. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * iwlwifi: fix typoWey-Yi Guy2012-01-301-4/+4
| | | | | | | | | | | | | | Fix few places of typo Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * rtlwifi: Move pr_fmt macros to a single locationLarry Finger2012-01-3019-47/+21
| | | | | | | | | | | | | | | | | | Although the rtlwifi family of devices contains 11 copies of the pr_fmt macro, the macro is not defined for all routines that need it. By moving the macro to wifi.h, a single copy is available for all routines. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * ath9k: use WARN_ON_ONCE in ath_rc_get_highest_rixJohn W. Linville2012-01-301-1/+1
| | | | | | | | | | | | | | The device seems to survive the issue, so no need to flood the logs about it... Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mwl8k: Configuring correct MAC address in broadcast keyYogesh Ashok Powar2012-01-271-1/+1
| | | | | | | | | | | | | | | | | | | | While configuring the broadcast key in the hardware, in multi-BSS environment, BSSes other than first were incorrectly configured with the MAC address of first BSS. Fixing it with correct MAC addresses. Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mwifiex: update BSS parameters in dump_station_info()Amitkumar Karwar2012-01-273-0/+24
| | | | | | | | | | | | | | | | | | | | This enables user to check beacon interval, DTIM period, short slot time and short preamble information using "iw dev mlan0 link" command when station is in connected state. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * mwifiex: pass priv pointer instead of adapterAvinash Patil2012-01-273-7/+5
| | | | | | | | | | | | | | | | | | | | Pass mwifiex_private pointer directly to wmm_add_buf_txqueue() instead of passing adapter and then deriving priv again in mwifiex_get_priv_by_id(). This reduces a 'for' loop in TX path. Signed-off-by: Avinash Patil <patila@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * rt2800usb: remove PWR_PIN_CFG=0x3 during initStanislaw Gruszka2012-01-271-2/+0
| | | | | | | | | | | | | | | | | | | | This seems to be only needed as workaround for hardware problem on PCI devices. Acked-by: Helmut Schaa <helmut.schaa@googlemail.com> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * rt2800: zero MAC_SYS_CTRL bits during BBP and MAC resetStanislaw Gruszka2012-01-272-2/+2
| | | | | | | | | | | | | | | | | | | | Zero all other bits than RESET_CSR and RESET_BBP when want to do the reset, that the vendor driver behaviour. Acked-by: Helmut Schaa <helmut.schaa@googlemail.com> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * rt2800: disable DMA after firmware loadStanislaw Gruszka2012-01-271-12/+9
| | | | | | | | | | | | | | | | | | We can receive frames just after firmware load with current code, so disable DMA just after firmware is loaded, not before. Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * rt2800usb: initialize H2M_INT_SRC registerStanislaw Gruszka2012-01-271-0/+2
| | | | | | | | | | | | | | | | | | | | | | Ralink USB driver initialize H2M_INT_SRC to 0 after firmware load, and never touch this register later. It is not touched at all by Ralink PCI driver. Acked-by: Helmut Schaa <helmut.schaa@googlemail.com> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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