To reduce the possibility of losing an interrupt in the handler due to a
race between an interrupt processing and disable/enable of interrupts,
enable MSIX one shot.
Also, add support for adaptive interrupt coalesing
Signed-off-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: Masroor Vettuparambil <masroor.vettuparambil@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move function locations to remove the need for internal declarations and
other misc clean-ups.
Signed-off-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: Arpit Patel <arpit.patel@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Detect if the adapter is Titan or Titan1A, and tune the driver for this
hardware. Also, remove unnecessary function __vxge_hw_device_id_get.
Signed-off-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: Ram Vepa <ram.vepa@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add the ability in the vxge driver to flash firmware via ethtool.
Updated to include comments from Ben Hutchings.
Signed-off-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: Ram Vepa <ram.vepa@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It is possible for multiple callers to access the firmware interface for
the same vpath simultaneously, resulting in uncertain output. Add locks
to serialize access. Also, make functions only accessed locally static,
thus requiring some movement of code blocks.
Signed-off-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: Ram Vepa <ram.vepa@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove all of the unnecessary debug printk indirection and temporary
variables for vxge_debug_ll and vxge_assert.
Signed-off-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: Ram Vepa <ram.vepa@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wait for the receive traffic to become idle before attempting to close
or reset the adapter. To enable the processing of packets while Receive
Idle, move the clearing of __VXGE_STATE_CARD_UP bit in vxge_close to
after it. Also, modify the return value of the ISR when the adapter is
down to IRQ_HANDLED. Otherwise there are unhandled interrupts for the
device.
Signed-off-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: Ram Vepa <ram.vepa@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Enable RSS hashing and add ability to pass up the adapter calculated rx
hash up the network stack (if feature is available). Add the ability to
enable/disable feature via ethtool, which requires that the adapter is
not running at the time. Other miscellaneous cleanups and fixes
required to get RSS working.
Signed-off-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: Ram Vepa <ram.vepa@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use results of make namespacecheck to make functions local and
remove code that is not used.
Also rename initialize_ethtool_ops to vxge_initialize_ethtool_ops.
Compile tested only.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Update copyright information to reflect the Exar purchase of Neterion
Signed-off-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@exar.com>
Signed-off-by: Ramkrishna Vepa <ramkrishna.vepa@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- max_config_dev loadable parameter is set to 0xFF by default. Pass correct
number of VFs value to pci_sriov_enable() if max_config_dev is set to its
default value.
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@exar.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
- Align the memory only if it is misaligned.
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Added a function to check if FCS stripping is disabled by the firmware, if
it is not disabled fail driver load.
- By default FCS stripping is disabled by the firmware. With this assumption
driver decrements the indicated packet length by 4 bytes(FCS length).
- This patch ensures that FCS stripping is disabled during driver load time.
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes a case in the transmit completion code which was resulting
in pktgen hanging at the end of a run. The cause is due to the fact that
the ->cb[] area of an skb cannot be used in a network driver's transmit
path, as that area belongs to the network protocol. Pktgen hangs, as it
sends out the same packet multiple times, and vxge's use of this area of
the skb for a temporary list can only add the packet to the temporary list
once (while it may be on the queue many times). The fix is to remove this
abuse of skb->cb[]. Instead, skb pointers are placed into a temporary
stack array, and then free outside of the tx lock. This retains the smp
optimization of doing dev_kfree_skb() outside of the tx lock.
Signed-off-by: Benjamin LaHaise <ben.lahaise@neterion.com>
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Removed ioremap of bar1 address
Driver needs only bar0 address for register access
- Removed references to bar1 and bar2 addresses
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch takes care of Initialization and configuration steps of
Neterion Inc's X3100 Series 10GbE PCIe I/O Virtualized Server Adapter.
- Device Initialization.
- Verification and setting of device config parameters.
- Allocation of Tx FIFO and Rx Ring descriptors (DTR).
- APIs to get various type of hw stats
- APIs to configure RTS (Receive Traffic Steering)
- Changes in this submission -
- Include vmalloc header without which a compilation error occured
on sparc64, ppc64 and IA64 plaforms.
- Fixed compilation warning in register_poll, write32_upper,
write32_lower and the special write64 functions on ppc64.
- General cleanup - removed redundant includes and defines.
- Changes in previous submissions -
- Add readq/writeq implementation for the driver for 32 bit systems -
reported by Dave Miller.
- Incorporated following comments from Ben Hutchings
- Start a comment with "/**" to make it a kernel-doc comment.
- Use prefix, "__vxge" in front of hw functions to make them globally
unique.
- Fixed unnecessary clearing members of *channel just before freeing
- Use backslashes only for macro definitions and not in multi-line
statements.
- Used pci_find_capability instead of redefining it.
- Used device and revision ids that are already in pdev - no need to
read them again.
- Used pci_save_state() and pci_restore_state() around resets.
- Used udelay and mdelay directly instead of wrapper.
- In __vxge_hw_device_register_poll() reset i to 0 after the
microsecond delay loop to commence the millisecond delay loop.
- Corrected spelling "sapper" - should be "swapper"
- Remove too much vertical whitespace.
- Replaced magic numbers with appropriate macros
- Incorporated following comments from Andi Kleen [andi@firstfloor.org]
- Reduced the arguments in functions or refactored them into smaller
functions.
- Allocate page sized memories used in slow path with vmalloc.
- Use asserts where necessary.
- Use macros instead of magic numbers.
- Use the pci layer code instead of defining own functions
- Remove driver wrappers such as xge_hw_device_private_set().
- Fixed sparse warnings.
Signed-off-by: Sivakumar Subramani <sivakumar.subramani@neterion.com>
Signed-off-by: Rastapur Santosh <santosh.rastapur@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jon Mason
stephen hemminger
David S. Miller
Sreenivasa Honnur
Tejun Heo
Sreenivasa Honnur
Joe Perches
Benjamin LaHaise
Ramkrishna Vepa