There is race between netif_stop_queue and netif_stopped_queue
check.So check once again if buffers are available to avoid race.
With above logic we can also get rid of tx lock in process_cmd_ring.
Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Check the access by tools for hardware queue engine and handle it
separately than other block registers, otherwise incorrect data
is returned.
Support for only NX3031 based cards.
Acked-by: Dhananjay Phadke <dhananjay.phadke@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Rajesh K Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Validate all sections of unified romimage, before accessing them,
to avoid seg fault.
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
GNU General Public License is in file "COPYING".
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In netxen_read_mac_addr, mac_addr should be declared
u64 instead of __le64, used by host only.
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Unified firmware image size can be < 1 MB
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Along with netdev->perm_addr, mac address will be
maintained in device private structure.
o Device limitation: We need to set mac address when ever
interface comes up.
In ALB/TAL mode, bonding driver calls set_mac for all slave with bond mac address.
But bonding driver set netdev->dev_addr field to its original value,
after enslaving interfaces.
When ever active slave changes, it swap dev_addr of inactive slave with active.
Yet it doesn't notify driver about change in netdev->dev_addr.
As netxen driver need to set mac addr when ever interface comes up,
it can't rely on netdev->dev_addr field. Specially in case of bonding mode ALB/TLB.
Signed-off-by: Narender Kumar <narender.kumar@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add MODULE_FIRMWARE hints for various firmware file types,
required by different chip revisions.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add PCI vendor and device IDs for QLE8240 and QLE8242
CNA devices.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add support for extracting firmware from a unified
file format which embeds firmware images for all chip
revisions. Fallback to orginal file formats if new
image is not found.
Signed-off-by: Amit Kumar Salecha <amit@netxen.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Firmware hang detection and recovery (reset) need to
be disabled for diagnostic tools, which can run
some disruptive tests.
This adds a driver level control to turn off this
feature by diag tools.
Signed-off-by: Narender Kumar <narender.kumar@qlogic.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Future revisions need different chip reset sequence
and firmware initialization.
Also clean up some never used debug code.
Signed-off-by: Amit Kumar Salecha <amit@netxen.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Amit Kumar Salecha <amit@netxen.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add sysfs entries to enable register and memory access
for diagnostic tools.
Signed-off-by: Narender Kumar <narender.kumar@qlogic.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since register and onboard memory access has separate
window registers, they need not be kept under same lock.
Also, memory is always accessed from process context
(mostly for firmware init and diagnostic tools).
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use common variables crb_win, ocm_win for all revisions of chip.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add access to on chip memory, this is used by
debug and diagnostic tools only.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sub 64-bit / unaligned access to oncard memory was only used
by old diagnostic tools, causes some intermittent issues when
memory controller agent is used. The new access method was
added by commit ea6828b8aa
("netxen: improve pci memory access"). Firmware init anyway
uses 8-byte strides.
This also fixes address/offset calculation for NX2031 context
memory (SIU). For NX3031, SIU uses same register offsets
as packet memory (MIU).
Signed-off-by: Amit Kumar Salecha <amit@netxen.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since net_device has an instance of net_device_stats,
we can remove the instance of this from the private adapter structure.
Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Add QLogic copyright, add linux-driver@qlogic.com to
MAINTAINERS.
o Delete old contact information.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Redesign tx timeout handling in line with new firmware
reset design that co-ordinates with other PCI function
drivers.
o For NX3031, first try to reset PCI function's own
context before requesting firmware reset.
o For NX2031, since firmware heartbit is not supported
directly request firmware reset.
Signed-off-by: Amit Kumar Salecha <amit@netxen.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Access on card memory through memory controller (agent)
rather than moving small pci window around. Clean up the
code for moving windows around.
o Restrict memory accesss to 64 bit, currently only firmware
download uses this.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix the offset of vlan_TCI field in cmd_desc_type0.
Signed-off-by: Amit Kumar Salecha <amit@qlogic.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Combine netxen_get_firmware_info(), netxen_check_options()
so that they are updated every time firmware is reset.
o Set dma mask everytime firmware is reset.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
For registers accessed in fast path (interrupt / softirq)
avoid expensive I/O address translation. These registers
are directly mapped in PCI bar 0 and do not require
any window checks.
Signed-off-by: Amit Kumar Salecha <amit@netxen.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement state machine to detect firmware hung state
and recover. Since firmware will be shared by all PCI
functions that have different class drivers (NIC or
FCOE or iSCSI), explicit hardware based serialization
is required for initializing firmware.
o Used global scratchpad register to maintain device
reference count. Every probed pci function adds to
ref count.
o Implement timer (delayed work) for each pci func
that checks firmware heartbit every 5 sec and detaches
itself if firmware is dead. Last detaching function
reloads firmware. Other functions wait for firmware
init, and re-attach themselves.
Heartbit is not supported by NX2031 firmware.
Signed-off-by: Amit Kumar Salecha <amit@netxen.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alloc 12k skbuffs so that firmware can aggregate more
packets into one buffer. This doesn't raise memory
consumption since 9k skbs use 16k slab cache anyway.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
No need to put ethtool_ops in data, they should be const.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When the interface is put in bridged mode, destination mac
addresses are unknown to firmware. So packets take a slow
path (lower priority) in firmware reducing performance.
Firmware can cache limited number of remote unicast mac
addresses for certain interval, if "dynamic mac learning"
mode is enabled.
Driver needs to enable this "mac learning" mode in firmware.
Currently this is done through net device class sysfs entry,
possibly this can also be done upon netlink notifications to
from bridge.
Signed-off-by: Narender Kumar <narender.kumar@qlogic.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Consolidate all MAC/PHY access functions into netxen_nic_hw.c
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement common function for locking/unlocking 8 hardware
semaphores used for serializing access to shared resouces
on a NIC board by different PCI functions.
As by definition, callers of these semaphore API can be
put to sleep till the semaphore is locked.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove code for phy access on unreleased NX2031 based quad-gig board.
NX3031 based production quad-gig boards do not require direct phy
access by driver.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Consolidate register definitions in netxen_nic_hdr.h
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add ethtool -K knob to control LRO in firmware.
LRO path is completely separated from GRO, LRO packets
are still fed with netif_receive_skb().
Also fix ethtool statistics to include LRO packets.
Also use correct message type while configuring interrupt coalescing.
Signed-off-by: Narender Kumar <narender.kumar@qlogic.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
o Remove private workqueue in the driver, move all
scheduled tasks to keventd workqueues. This makes
ports (interfaces) of same / different NIC boards
independent, in terms of their link watchdog and
reset tasks.
o Move quick checks for link status and temperature
in timer callback, schedule watchdog task only if
link status changed or temperature reached critical
threshold.
This also fixes deadlock when thermal panic occurs,
watchdog work was flushing workqueue that it was
sitting on.
Signed-off-by: Amit Kumar Salecha <amit@qlogic.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add support to handle aggregate packets from firmware.
Local TCP flows are automatically identified by firmware
based on the dest IP hash added by driver for local IP
addresses.
The packets are sent down on the jumbo rx ring.
Signed-off-by: Narender Kumar <narender.kumar@qlogic.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove unnecessary offsetof calulations on these structures:
netxen_board_info, netxen_user_old_info, netxen_new_user_info.
The offsets into the flash are fixed, don't need to be calculated.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add support for ethtool -G to tune rx and tx ring sizes
per interface basis.
This is only supported for NX3031 based cards.
Signed-off-by: Amit Kumar Salecha <amit@netxen.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
