[linda] Use standard readq() and writeq() implementations
This driver is the original source of the current readq() and writeq()
implementations for 32-bit iPXE. Switch to using the now-centralised
definitions, to avoid including architecture-specific code in an
otherwise architecture-independent driver.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[hermon] Ensure hardware is quiescent when no interfaces are open
WinPE has been observed to call PXENV_UNDI_SHUTDOWN but not
PXENV_STOP_UNDI. This means that Hermon hardware is left partially
active (firmware running and one event queue mapped) when WinPE starts
up, which can cause a Blue Screen of Death.
Fix by ensuring that the hardware is left quiescent (with the firmware
stopped) when no interfaces are open.
Reported-by: Itay Gazit <itayg@mellanox.co.il>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[arbel] Add (not-yet-functional) support for RC queue pairs
Arbel seems to crash the system as soon as the first send WQE
completes on an RC queue pair. (NOPs complete successfully, so this
is a problem specific to the work queue rather than the completion
queue.) The cause of this problem has remained unknown for over a
year.
Check in the non-functioning code to avoid bit-rot, and in the hope
that someone will find the fix.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[hermon] Remove temporary workaround for missing BOFM mport support
This reverts commit 15c1200 ("[hermon] Work around missing mport
support in current BOFM implementations").
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[hermon] Work around missing mport support in current BOFM implementations
Current BOFM versions are unable to create entries with mport>1, which
means that only the port 1 MAC address can be explicitly specified.
Work around this by using the provided MAC address as a base address
for all subsequent ports. For example, if BOFM assigns the address
00:1A:64:76:00:09 for port 1
then we will assign the addresses
00:1A:64:76:00:09 for port 1
00:1A:64:76:00:0a for port 2
Future BOFM versions that may correctly support mport will work with
this scheme without modification provided that the BOFM entries are
created in increasing order of mport. Since BOFM tools tend to
generate entries in increasing order (of slot, port, etc), this is not
an unreasonable compromise.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
On 64-bit builds, MLX_DECLARE_STRUCT() produces a structure that is
always a multiple of 64 bits long, causing the HCR structure to be
over-length by one dword. This in turn causes hermon_cmd() to write
beyond the end of the HCR, which causes commands to fail.
Reported-by: Itay Gazit <itayg@mellanox.co.il>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Avoid memory leak of untreated events by having circular event queue
operation.
Signed-off-by: Itay Gazit <itaygazit@gmail.com>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Add PRM structures to support Hermon Ethernet devices.
Signed-off-by: Itay Gazit <itaygazit@gmail.com>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Unlike Arbel, port parameters must be applied via a separate call to
SET_PORT, rather than as parameters to INIT_PORT.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[hermon] Minimise the number of VPM mapping operations
Mapping a single page at a time causes a several-second delay at
device initialisation time. Reduce this by mapping multiple pages at
a time, using the largest block sizes possible given the alignment
constraints.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[arbel] Minimise the number of VPM mapping operations
Mapping a single page at a time causes a several-second delay at
device initialisation time. Reduce this by mapping multiple pages at
a time, using the largest block sizes possible given the alignment
constraints.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[arbel] Allocate only as much memory as is needed for firmware and ICM
Use individual page mappings rather than a single whole-region
mapping, to avoid the waste of memory that occurs due to the
constraint that each mapped block must be aligned on its own size.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[arbel] Synchronise changes with the Hermon driver
Backport some changes from the Hermon driver to the Arbel driver.
Specifically:
o Rename reserved_lkey to lkey
o Add arbel_rate() to calculate transmission rates
o Structure code to allow for addition of RC queue pairs
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[arbel] Optimise ICM layout to reduce overall memory usage
Reduce the amount of ICM space required by choosing to order the
various allocations in approximately descending order of alignment
requirements.
This saves approximately 512kB of host memory.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
[arbel] Perform ICM allocations according to the specification
The current method for ICM allocation exactly matches the addresses
chosen by the old Etherboot driver, but does not match the
specification. Some ICM tables (notably the queue pair context table)
therefore end up incorrectly aligned.
Fix by performing allocations as per the specification.
Signed-off-by: Michael Brown <mcb30@ipxe.org>