Commit Graph

15 Commits

Author SHA1 Message Date
Roland Dreier
b027cacdab mlx4_core: Fix infinite loop on device initialization
Commit 3d73c288 ("mlx4_core: Fix section mismatches") introduced a
stupid bug in device init: when some of mlx4_init_one() was split off
into __mlx4_init_one(), the call from the main mlx4_init_one()
function was back to mlx4_init_one() rather than to __mlx4_init_one(),
which leads to an obvious infinite loop if the function is every
called.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-10-13 14:10:50 -07:00
Roland Dreier
3d73c2884f mlx4_core: Fix section mismatches
Commit ee49bd93 ("mlx4_core: Reset device when internal error is
detected") introduced some section mismatch problems when
CONFIG_HOTPLUG=n, because the error recovery code tears down and
reinitializes the device after everything is loaded, which ends up
calling into lots of code marked __devinit and __devexit from regular
.text.  Fix this by getting rid of these now-incorrect section
markers.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-10-10 15:43:54 -07:00
Jack Morgenstein
d7bb58fb1c mlx4_core: Write MTTs from CPU instead with of WRITE_MTT FW command
Write MTT entries directly to ICM from the driver (eliminating use of
WRITE_MTT command).  This reduces the number of FW commands needed to
register an MR by at least a factor of 2 and speeds up memory
registration significantly.  This code will also be used to implement
FMRs.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-10-09 19:59:16 -07:00
Roland Dreier
121964ec38 mlx4_core: Fix meaning of dev->caps.reserved_mtts
Everything that uses caps.reserved_mtts expects it to be a count of MTT
segments, not MTT entries.  So convert the value that the FW gives us to
a count of segments.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-10-09 19:59:16 -07:00
Jack Morgenstein
5b0bf5e25e mlx4_core: Support ICM tables in coherent memory
Enable having ICM tables in coherent memory, and use coherent memory
for the dMPT table.  This will allow writing MPT entries for MRs both
via the SW2HW_MPT command and also directly by the driver for FMR
remapping without needing to flush or worry about cacheline boundaries.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-10-09 19:59:15 -07:00
Jack Morgenstein
cd9281d873 IB/mlx4: Display misc device information under /sys/class/infiniband/
display the following device information under /sys/class/infiniband/mlx4_X:
board_id, fw_ver, hw_rev, hca_type.

This patch makes this information available to userspace utilities
such as ibstat and ibv_devinfo.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-10-09 19:59:14 -07:00
Michael S. Tsirkin
08fb105540 mlx4_core: Enable MSI-X by default
Recover from MSI-X errors by automatically falling back on regular
interrupt, instead of asking the user to do this manually.  This makes
it possible to enable MSI-X by default, and will make it possible to
get rid of the msi_x module option in the future.

Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-10-09 19:59:05 -07:00
Jack Morgenstein
c9f2ba5ed2 IB/mlx4: Increase max outstanding RDMA reads as target
Change the maximum number of outstanding RDMA reads allowed as a
target from 4 to 16 to per QP.  This allows RDMA read operations to
pipeline better.

Pointed out by Dotan Barak and Sagi Rotem.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-17 20:50:50 -07:00
Jack Morgenstein
ee49bd9397 mlx4_core: Reset device when internal error is detected
Reset the device when an internal error is detected.

Also, detect errors by polling the error buffer rather than using
interrupts.  This is more robust and doesn't depend on MSI-X.  Remove
the old interrupt handler entirely, since we don't want to support two
mechanisms for detecting internal errors.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-17 18:37:42 -07:00
Dotan Barak
149983af60 mlx4_core: Get the maximum message size from reported device capabilities
Get the maximum message size from the device capabilities returned
from the QUERY_DEV_CAP firmware command, rather than hard-coding 2 GB.

Signed-off-by: Dotan Barak <dotanb@dev.mellanox.co.il>
Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-09 20:12:26 -07:00
Jack Morgenstein
786f238e4f mlx4_core: Add new Mellanox device IDs
Add new IDs for PCIe gen2 devices.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-02 20:41:35 -07:00
Roland Dreier
5ae2a7a836 IB/mlx4: Handle FW command interface rev 3
Upcoming firmware introduces command interface revision 3, which
changes the way port capabilities are queried and set.  Update the
driver to handle both the new and old command interfaces by adding a
new MLX4_FLAG_OLD_PORT_CMDS that it is set after querying the firmware
interface revision and then using the correct interface based on the
setting of the flag.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-06-18 08:15:02 -07:00
Roland Dreier
b581401ed0 mlx4_core: Initialize ctx_list and ctx_lock earlier
We may call mlx4_dispatch_event() before mlx4_register_device() is
called for a device, because for example a catastrophic error happens
immediately after we enable interrupts.  Therefore priv->ctx_list and
priv->ctx_lock need to be initialized earlier.

This bug was actually exposed by the MSI-X bug that returned IRQ numbers 
to drivers in reverse order, so that the first FW command 
interrupt looked to mlx4 like a catastrophic error.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-06-07 11:51:58 -07:00
Roland Dreier
20eebcf09c mlx4_core: Remove unused doorbell_lock
struct mlx4_priv.doorbell_lock is never used, so delete it.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-13 08:54:18 -07:00
Roland Dreier
225c7b1fee IB/mlx4: Add a driver Mellanox ConnectX InfiniBand adapters
Add an InfiniBand driver for Mellanox ConnectX adapters.  Because
these adapters can also be used as ethernet NICs and Fibre Channel 
HBAs, the driver is split into two modules: 
 
  mlx4_core: Handles low-level things like device initialization and 
    processing firmware commands.  Also controls resource allocation 
    so that the InfiniBand, ethernet and FC functions can share a 
    device without stepping on each other. 
 
  mlx4_ib: Handles InfiniBand-specific things; plugs into the 
    InfiniBand midlayer. 

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-08 18:00:38 -07:00