MMU cache invalidation timeout indicates that the device is unstable and
therefore unusable.
Hence in such case do hard reset and return an error to the user if was
called from ioctl.
In addition, change the print to error level and rephrase its text.
Signed-off-by: NOmer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

GAUDI does not support soft-reset as it leaves the NIC ports in an awkward
state, where their QMANs were reset but the NIC itself is still working.

In addition, there is not much sense in doing soft-reset when training is
done on multiple GAUDIs.
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: NTomer Tayar <ttayar@habana.ai>

The patch_cb_size is not updated for Wreg32 in its validate function, so
updated in goya_validate_cb.
Signed-off-by: NRachel Stahl <rstahl@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

In Gaudi there is a feature of clock gating certain engines.
Therefore, add this property to the device structure.

In addition, due to a limitation of this feature, the driver needs to
dynamically enable or disable this feature during run-time. Therefore, add
ASIC interface functions to enable/disable this function from the common
code.

Moreover, this feature must be turned off when the user wishes to debug the
ASIC by reading/writing registers and/or memory through the driver's
debugfs. Therefore, add an option to enable/disable clock gating via the
debugfs interface.
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Coresight is not supported on simulator, therefore add a boolean for
checking that (currently used by un-upstreamed code).
Signed-off-by: NOmer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

This feature requires handling h/w resources which are a bit different from
one ASIC to the other. Therefore, we need to define a set of interfaces the
ASIC code provides to the common code to signal, wait, reset sync object
and to reset and init a queue.

As this feature is not supported in Goya, provide an empty implementation
of those functions.
Signed-off-by: NOmer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Load CPU device boot loader during driver boot time in order to avoid flash
write for every boot loader update.

To preserve backward-compatibility, skip the device boot load if the device
doesn't request it.
Signed-off-by: NOfir Bitton <obitton@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Add a new opcode to the INFO IOCTL that retrieves the device time
alongside the host time, to allow a user application that want to measure
device time together with host time (such as a profiler) to synchronize
these times.
Signed-off-by: NTomer Tayar <ttayar@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

When we have DMA QMAN with multiple streams, we need to know whether the
command buffer contains at least one DMA packet in order to configure the
barriers correctly when adding the 2xMSG_PROT at the end of the JOB. If
there is no DMA packet, then there is no need to put engine barrier. This
is relevant only for GAUDI as GOYA doesn't have streams so the engine can't
be busy by another stream.
Reviewed-by: NTomer Tayar <ttayar@habana.ai>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Retrieve from the firmware the DMA mask value we need to set according to
the device's PCI controller configuration. This is needed when working on
POWER9 machines, as the device's PCI controller is configured in a
different way in those machines.
Reviewed-by: NTomer Tayar <ttayar@habana.ai>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Move the code of device CPU initialization from being ASIC-Dependent to
common code. In addition, add support for the new error reporting feature
of the firmware boot code.
Reviewed-by: NOmer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

We want to remove the following restrictions/assumptions in our driver:
1. The H/W queue index is also the completion queue index.
2. The H/W queue index is also the IRQ number of the completion queue.
3. All queues of the same type have consecutive indexes.

Therefore we add the support for H/W queues of the same type with
nonconsecutive indexes and completion queue index and IRQ number different
than the H/W queue index.
Signed-off-by: NOmer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Stop-on-error mode in DMA is useful as it stops the transaction
immediately upon error e.g. page fault.
But it may cause the next command submission to fail as is leaves the DMA
in unstable state.
Therefore we remove the stop-on-error configuration from the DMA.
Stop-on-err is still available for debug.
Signed-off-by: NOmer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Upon reset of the ASIC, the driver would have waited for the CPU to come
out of reset before finishing the reset process. This was done for the
purpose of making the CPU available to answer FLR requests. However, when a
VM shuts down, the driver isn't removed so a reset never happens.
Therefore, remove this waiting period as we don't need it.
Reviewed-by: NOmer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Add print upon clock slow down due to power consumption or overheating.
In addition, add print when back to optimal clock.
Signed-off-by: NOmer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Sparse reports a warning at goya_hw_queues_unlock()
warning: context imbalance in goya_hw_queues_unlock() - unexpected unlock
The root cause is a missing annotation at goya_hw_queues_unlock()
Add the missing __releases(&goya->hw_queues_lock) annotation
Signed-off-by: NJules Irenge <jbi.octave@gmail.com>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Sparse reports a warning at goya_hw_queues_lock()
warning: context imbalance in goya_hw_queues_lock() - wrong count at exit
The root cause is a missing annotation at goya_hw_queues_lock()
Add the missing __acquires(&goya->hw_queues_lock) annotation
Signed-off-by: NJules Irenge <jbi.octave@gmail.com>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

The compute engines can perform millions of transactions per second. If
there is a bug in the S/W stack, we could get a lot of interrupts and spam
the kernel log. Therefore, ratelimit these prints
Reviewed-by: NOmer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Allow debug user to write/read 64-bit data through debugfs.
This will expedite the dump process of the (large) internal
memories of the device done during debug.
Signed-off-by: NMoti Haimovski <mhaimovski@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

DRAM_PHYS_BASE is already taken into account in MMU_PAGE_TABLES_ADDR.
Signed-off-by: NOmer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Host memory may be allocated with huge pages.
A different virtual range may be used for mapping in this case.
Add Huge PCI MMU (HPMMU) properties to support it.
This patch is a prerequisite for future ASICs support and has no effect on
Goya ASIC as currently a single virtual host range is used for all page
sizes.
Signed-off-by: NOmer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Optimize hl_mmu_map and hl_mmu_unmap by not calling flush(ctx)
within per-page loop.
Signed-off-by: NPawel Piskorski <ppiskorski@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

During device memory memset, the driver allocates and use a CB (command
buffer). To reuse existing code, it keeps a pointer to the CB in two
variables, user_cb and patched_cb. Therefore, there is no need to "put"
both the user_cb and patched_cb, as it will cause an underflow of the
refcnt of the CB.
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

The driver must halt the engines before doing hard-reset, otherwise the
device can go into undefined state. There is a place where the driver
didn't do that and this patch fixes it.
Reviewed-by: NTomer Tayar <ttayar@habana.ai>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/misc/habanalabs/goya/goya.c: In function goya_pldm_init_cpu:
drivers/misc/habanalabs/goya/goya.c:2195:6: warning: variable val set but not used [-Wunused-but-set-variable]
drivers/misc/habanalabs/goya/goya.c: In function goya_hw_init:
drivers/misc/habanalabs/goya/goya.c:2505:6: warning: variable val set but not used [-Wunused-but-set-variable]

Fixes: 9494a8dd ("habanalabs: add h/w queues module")
Signed-off-by: NChen Wandun <chenwandun@huawei.com>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Make the code more concise and maintainable by using defines for the F/W
files.
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: NOmer Shpigelman <oshpigelman@habana.ai>

Successful device initialization is mentioned in kernel log with the
message "Successfully added device to habanalabs driver". There is no point
of spamming the log with additional messages about successful queue
testing, which are implied by the above mentioned message.
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: NOmer Shpigelman <oshpigelman@habana.ai>

During hard reset we should not access the device except of necessary
reset operations because the device might be stuck or unresponsive.
Signed-off-by: NOmer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Split the properties used for MMU mappings to DRAM and PCI (host) types.
This is a prerequisite for future ASICs support.
Note that in Goya ASIC, the PMMU and DMMU are the same (except of page
sizes) as only one MMU mechanism is used for both of the mapping types.
Hence this patch should not have any effect on current behavior.
Signed-off-by: NOmer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Add the ability to invalidate the necessary MMU cache only.
This ability is a prerequisite for future ASICs support.
Note that in Goya ASIC, a single cache is used for both host/DRAM
mappings and hence this patch should not have any effect on current
behavior.
Signed-off-by: NOmer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Some of the functions in the memory module code were too long and/or
contained multiple operations that are not always done together. Re-factor
the code by dividing those functions to smaller functions which are more
readable and maintainable.
Signed-off-by: NOmer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Move the read of the F/W boot versions before exiting on possible failures
of the F/W boot. This will help debug boot failures as we will be able to
know the F/W boot version.
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: NOmer Shpigelman <oshpigelman@habana.ai>

To enable userspace processes, e.g. management utilities, to display the
card name to the user, add the card name property to the HW_IP
structure that is copied to the user in the INFO IOCTL.
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/misc/habanalabs/goya/goya.c: In function 'goya_init_mme_cmdq':
drivers/misc/habanalabs/goya/goya.c:1536:6: warning:
 variable 'qman_base_addr' set but not used [-Wunused-but-set-variable]

It is never used, so can be removed.
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Add a new opcode to the INFO IOCTL to allow the user application to
retrieve the ASIC's current and maximum clock rate. The rate is
returned in MHz.
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: NTomer Tayar <ttayar@habana.ai>

Reduce latency to memory during TPC kernel execution.
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: NTomer Tayar <ttayar@habana.ai>

This patch adds a support for a new H/W queue type.
This type of queue is for DMA and compute engines jobs, for which
completion notification are sent by H/W.
Command buffer for this queue can be created either through the CB
IOCTL and using the retrieved CB handle, or by preparing a buffer on the
host or device SRAM/DRAM, and using the device address to that buffer.
The patch includes the handling of the 2 options, as well as the
initialization of the H/W queue and its jobs scheduling.
Signed-off-by: NTomer Tayar <ttayar@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

Jobs on some queues must be provided with a handle to a driver command
buffer object, while for other queues, jobs must be provided with an
address to a command buffer.
Currently the distinction is done based on the queue type, which is less
flexible if the same queue type behaves differently on different
types of ASICs.
This patch adds a new queue property for this target, which is
configured per queue type per ASIC type.
Signed-off-by: NTomer Tayar <ttayar@habana.ai>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

In case the F/W fails to initialize the thermal sensors, print an
appropriate error message to kernel log and fail the device
initialization.
Reviewed-by: NTomer Tayar <ttayar@habana.ai>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

We want to stop using the acronym KMD. Therefore, replace all locations
(except for register names we can't modify) where KMD is written to other
terms such as "Linux kernel driver" or "Host kernel driver", etc.
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: NOmer Shpigelman <oshpigelman@habana.ai>