Merge tag 'misc-habanalabs-next-2022-07-12' of https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux into char-misc-next

Oded writes:

This tag contains habanalabs driver changes for v5.20:

- Add Gaudi2 ASIC support. All the features required for Gaudi2 are included
  in this tag (except the networking aspect).

- Add more events to the eventfd support in the driver. With the new code, we
  expose three events that the user can register to get notification about them.

- re-factor soft reset code and replace its name to compute reset to better
  reflect the actual reset done in new ASICs

- Change the way Gaudi2 triggers an MSI-X interrupt due to h/w bug.

- Improve the code of the debugfs node that scrubs the device's memory.

- Add mechanism for better compatibility with older f/w versions

- Cleanup kernel log prints by moving some prints to debug and removing others.

- Many small bug fixes and minor changes.

* tag 'misc-habanalabs-next-2022-07-12' of https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux: (88 commits)
  habanalabs: move h/w dirty message to debug
  habanalabs: rename soft reset to compute reset
  habanalabs: add status of reset after device release
  habanalabs: fix update of is_in_soft_reset
  habanalabs: expose only valid debugfs nodes
  habanalabs/gaudi2: map virtual MSI-X doorbell memory for user
  habanalabs/gaudi2: modify decoder to use virtual MSI-X doorbell
  habanalabs/gaudi2: modify CS completion CQ to use virtual MSI-X doorbell
  habanalabs/gaudi2: replace defines for reserved sob/mob with enums
  habanalabs/gaudi2: configure virtual MSI-X doorbell interface
  habanalabs: add a value field to hl_fw_send_pci_access_msg()
  habanalabs: fixes to the poll-timeout macros
  habanalabs/gaudi2: use DIV_ROUND_UP_SECTOR_T instead of roundup
  habanalabs: initialize variable explicitly
  habanalabs: Use the bitmap API to allocate bitmaps
  habanalabs/gaudi2: remove unused defines
  habanalabs: make sure variable is set before used
  habanalabs: don't declare tmp twice in same function
  habanalabs: do not set max power on a secured device
  habanalabs/gaudi2: SM mask can only be 8-bit
  ...

1 files changed, 28 insertions, 10 deletions

diff --git a/Documentation/ABI/testing/debugfs-driver-habanalabs b/Documentation/ABI/testing/debugfs-driver-habanalabs
index 0f8d20fe343f..c915bf17b293 100644
--- a/Documentation/ABI/testing/debugfs-driver-habanalabs
+++ b/Documentation/ABI/testing/debugfs-driver-habanalabs
@@ -101,6 +101,15 @@ Description:    Specify the size of the DMA transaction when using DMA to read
                 When the write is finished, the user can read the "data_dma"
                 blob
 
+What:           /sys/kernel/debug/habanalabs/hl<n>/dump_razwi_events
+Date:           Aug 2022
+KernelVersion:  5.20
+Contact:        fkassabri@habana.ai
+Description:    Dumps all razwi events to dmesg if exist.
+                After reading the status register of an existing event
+                the routine will clear the status register.
+                Usage: cat dump_razwi_events
+
 What:           /sys/kernel/debug/habanalabs/hl<n>/dump_security_violations
 Date:           Jan 2021
 KernelVersion:  5.12
@@ -121,14 +130,16 @@ Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        ogabbay@kernel.org
 Description:    Sets I2C device address for I2C transaction that is generated
-                by the device's CPU
+                by the device's CPU, Not available when device is loaded with secured
+                firmware
 
 What:           /sys/kernel/debug/habanalabs/hl<n>/i2c_bus
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        ogabbay@kernel.org
 Description:    Sets I2C bus address for I2C transaction that is generated by
-                the device's CPU
+                the device's CPU, Not available when device is loaded with secured
+                firmware
 
 What:           /sys/kernel/debug/habanalabs/hl<n>/i2c_data
 Date:           Jan 2019
@@ -136,39 +147,45 @@ KernelVersion:  5.1
 Contact:        ogabbay@kernel.org
 Description:    Triggers an I2C transaction that is generated by the device's
                 CPU. Writing to this file generates a write transaction while
-                reading from the file generates a read transaction
+                reading from the file generates a read transaction, Not available
+                when device is loaded with secured firmware
 
 What:           /sys/kernel/debug/habanalabs/hl<n>/i2c_len
 Date:           Dec 2021
 KernelVersion:  5.17
 Contact:        obitton@habana.ai
 Description:    Sets I2C length in bytes for I2C transaction that is generated by
-                the device's CPU
+                the device's CPU, Not available when device is loaded with secured
+                firmware
 
 What:           /sys/kernel/debug/habanalabs/hl<n>/i2c_reg
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        ogabbay@kernel.org
 Description:    Sets I2C register id for I2C transaction that is generated by
-                the device's CPU
+                the device's CPU, Not available when device is loaded with secured
+                firmware
 
 What:           /sys/kernel/debug/habanalabs/hl<n>/led0
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        ogabbay@kernel.org
-Description:    Sets the state of the first S/W led on the device
+Description:    Sets the state of the first S/W led on the device, Not available
+                when device is loaded with secured firmware
 
 What:           /sys/kernel/debug/habanalabs/hl<n>/led1
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        ogabbay@kernel.org
-Description:    Sets the state of the second S/W led on the device
+Description:    Sets the state of the second S/W led on the device, Not available
+                when device is loaded with secured firmware
 
 What:           /sys/kernel/debug/habanalabs/hl<n>/led2
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        ogabbay@kernel.org
-Description:    Sets the state of the third S/W led on the device
+Description:    Sets the state of the third S/W led on the device, Not available
+                when device is loaded with secured firmware
 
 What:           /sys/kernel/debug/habanalabs/hl<n>/memory_scrub
 Date:           May 2022
@@ -182,7 +199,8 @@ Date:           May 2022
 KernelVersion:  5.19
 Contact:        dhirschfeld@habana.ai
 Description:    The value to which the dram will be set to when the user
-                scrubs the dram using 'memory_scrub' debugfs file
+                scrubs the dram using 'memory_scrub' debugfs file and
+                the scrubbing value when using module param 'memory_scrub'
 
 What:           /sys/kernel/debug/habanalabs/hl<n>/mmu
 Date:           Jan 2019
@@ -277,7 +295,7 @@ Description:    Displays a list with information about the currently user
                 to DMA addresses
 
 What:           /sys/kernel/debug/habanalabs/hl<n>/userptr_lookup
-Date:           Aug 2021
+Date:           Oct 2021
 KernelVersion:  5.15
 Contact:        ogabbay@kernel.org
 Description:    Allows to search for specific user pointers (user virtual