In Tavor mode, when posting a long list of receive work requests, a
doorbell must be rung every 256 requests. Add code to do this when
required.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Handle case where prod_index has wrapped around and become less than
cq->cons_index by checking that their difference as a signed int is
positive rather than comparing directly.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
The size of work requests for atomic operations was computed
incorrectly in mthca: all sizeofs need to be divided by 16.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Move the computation of QP capabilities (max scatter/gather entries,
max inline data, etc) into the kernel, and have the uverbs module
return the values as part of the create QP response. This keeps
precise knowledge of device limits in the low-level kernel driver.
This requires an ABI bump, so while we're making changes, get rid of
the max_sge parameter for the modify SRQ command -- it's not used and
shouldn't be there.
Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Now that ib_umad uses the new MAD sending interface, it no longer
needs its own L_Key. So just delete the array of MRs that it keeps.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Change the struct ib_device.resize_cq() method to take a plain integer
that holds the new CQ size, rather than a pointer to an integer that
it uses to return the new size. This makes the interface match the
exported ib_resize_cq() signature, and allows the low-level driver to
update the CQ size with proper locking if necessary.
No in-tree drivers are exporting this method yet.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Fix a typo in the rearming of the catastrophic error polling timer: we
should rearm the timer as long as the stop flag is _not_ set.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
For cut-and-paste reasons, the IPoIB driver was setting skb->dev right
before calling dev_kfree_skb_any(). Get rid of this.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
ib_unregister_mad_agent() completes all pending MAD sends and waits
for the agent's send_handler routine to return. umad's send_handler()
calls queue_packet(), which does down_read() on the port mutex to look
up the agent ID. This means that the port mutex cannot be held for
writing while calling ib_unregister_mad_agent(), or else it will
deadlock. This patch fixes all the calls to ib_unregister_mad_agent()
in the umad module to avoid this deadlock.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Add ibX_path files to debugfs that contain information about the IPoIB
path cache. IPoIB ARP only gives GIDs, which the IPoIB driver must
resolve to real IB paths through the ib_sa module. For debugging,
when the ARP table looks OK but traffic isn't flowing, it's useful to
be able to see if the resolution from GID to path worked.
Also clean up the formatting of the existing _mcg debugfs files.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Two small fixes for the umad module:
- set kobject name for issm device properly
- in ib_umad_add_one(), s is subtracted from the index i when
initializing ports, so s should be subtracted from the index when
freeing ports in the error path as well.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Report the device's real page size capability in mthca_query_device().
Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This adds support for the Nvidia Geforce 7800 series of cards to the
nvidiafb framebuffer driver. All it does is add the PCI device id for
the 7800, 7800 GTX, 7800 GO, and 7800 GTX GO cards to the module device
table for the nvidiafb.ko driver, so that nvidiafb.ko will actually work
on these cards.
I also added the relevant PCI device ids to linux/pci_ids.h
I tested it on my 7800 GTX here and it works like a charm. I now can
get framebuffer support on this card! Woo hoo!! Nothing like 200x75 text
mode to make your eyes BLEED. ;)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
At header fixup time, it is not yet legal to ioremap() PCI
device registers, yet that is what this quirk code needs to
do.
Signed-off-by: David S. Miller <davem@davemloft.net>
Make sure that the P_Key index passed into mthca_modify_qp() is
within the device's P_Key table.
Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Fix sparse warning about passing `0` to simple_strtoul()
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Fix hotplug of devices for ib_umad module: when a device goes away,
kill off all MAD agents for open files associated with that device,
and make sure that the device is not touched again after ib_umad
returns from its remove_one function.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Mellanox has decided that the components of the firmware version are
really meant to be displayed in decimal, e.g. 0x000400070190 is
version 4.7.400. Change the format we use from "%x.%x.%x" to
"%d.%d.%d" to match this convention.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Don't build ipoib_mcast_iter_ functions if CONFIG_INFINIBAND_IPOIB_DEBUG
is not enabled -- their only callers will not be built either.
Also move the prototype for ipoib_open() to ipoib.h to fix a sparse warning.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Add an InfiniBand SCSI RDMA Protocol (SRP) initiator. This driver is
used to talk talk to InfiniBand SRP targets (storage devices).
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Shrink our source and .text a little by removing a few assignments of
NULL and 0 to memory that is already cleared as part of the allocation.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Replace kmalloc()+memset(,0,) with kzalloc(), for a net savings of 35
source lines and about 500 bytes of text.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
cfq's add_req_fn callback may invoke q->request_fn directly and
depending on low-level driver used and timing, a queued request may be
finished & deallocated before add_req_fn callback returns. So,
__elv_add_request must not access rq after it's passed to add_req_fn
callback.
This patch moves rq_mergeable test above add_req_fn(). This may
result in q->last_merge pointing to REQ_NOMERGE request if add_req_fn
callback sets it but as RQ_NOMERGE is checked again when blk layer
actually tries to merge requests, this does not cause any problem.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes a panic in the current tree caused by a race condition between the initial replenish cycle and the rx processing of the first packets trying to replenish the buffers.
Signed-off-by: Santiago Leon <santil@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
drivers/char/tlclk.c: In function `tlclk_init':
drivers/char/tlclk.c:775: warning: implicit declaration of function `platform_device_register_simple'
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
CC drivers/char/tpm/tpm_nsc.o
drivers/char/tpm/tpm_nsc.c:277: error: `platform_bus_type' undeclared here (not in a function)
...
CC drivers/char/tpm/tpm_atmel.o
drivers/char/tpm/tpm_atmel.c:175: error: `platform_bus_type' undeclared here (not in a function)
Make sure to include proper headers.
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We were getting powerbook sleep code included, and giving compile
errors, with CONFIG_PM=y on a 64-bit build. This excludes that code
so the kernel will compile. One day BenH will implement on sleep on
the G5...
Signed-off-by: Paul Mackerras <paulus@samba.org>
