Merge tag 'drm-habanalabs-next-2023-10-10' of https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux into drm-next

This tag contains habanalabs driver changes for v6.7.

The notable changes are:

- uAPI changes:
  - Expose tsc clock sampling to better sync clock information in profiler.
  - Enhance engine error reporting in the info ioctl.
  - Block access to the eventfd operations through the control device.
  - Disable the option of the user to register multiple times with the same
    offset for timestamp dump by the driver. If a user wants to use the same
    offset in the timestamp buffer for different interrupt, it needs to first
    de-register the offset.
  - When exporting dma-buf (for p2p), force the user to specify size/offset
    in multiples of PAGE_SIZE. This is instead of the driver doing the
    rounding to PAGE_SIZE, which has caused the driver to map more memory
    than was intended by the user.

- New features and improvements:
  - Complete the move of the driver to the accel subsystem by removing the
    custom habanalabs class and major and registering to accel subsystem.
  - Move the firmware interface files to include/linux/habanalabs. This is
    a pre-requisite for upstreaming the NIC drivers of Gaudi (as they need to
    include those files).
  - Perform device hard-reset upon PCIe AXI drain event to prevent the failure
    from cascading to different IP blocks in the SoC. In secured environments,
    this is done automatically by the firmware.
  - Print device name when it is removed for better debuggability.
  - Add support for trace of dma map sgtable operations.
  - Optimize handling of user interrupts by splitting the interrupts to two
    lists. One list for fast handling and second list for handling with
    timestamp recording, which is slower.
  - Prevent double device hard-reset due to 2 adjacent H/W events.
  - Set device status 'malfunction' while in rmmod.

- Firmware related fixes:
  - Extend preboot timeout because preboot loading might take longer than
    expected in certain cases.
  - Add a protection mechanism for the Event Queue. In case it is full, the
    firmware will be able to notify about it through a dedicated interrupt.
  - Perform device hard-reset in case scrubbing of memory has failed.

- Bug fixes and code cleanups:
  - Small fixes of dma-buf handling in Gaudi2, such as handling an offset != 0,
    using the correct exported size, creation of sg table.
  - Fix spmu mask creation.
  - Fix bug in wait for cs completion for decoder workloads.
  - Cleanup Greco name from documentation.
  - Fix bug in recording timestamp during cs completion interrupt handling.
  - Fix CoreSight ETF configuration and flush logic.
  - Fix small bug in hpriv_list handling (the list that contains the private
    data per process that opens our device).

Signed-off-by: Dave Airlie <[email protected]>

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From: Oded Gabbay <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: airlied

Documentation/ABI/testing/debugfs-driver-habanalabs

@@ -1,4 +1,4 @@
-What:           /sys/kernel/debug/habanalabs/hl<n>/addr
+What:           /sys/kernel/debug/accel/<n>/addr
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        [email protected]
@@ -8,34 +8,34 @@ Description:    Sets the device address to be used for read or write through
                 only when the IOMMU is disabled.
                 The acceptable value is a string that starts with "0x"
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/clk_gate
+What:           /sys/kernel/debug/accel/<n>/clk_gate
 Date:           May 2020
 KernelVersion:  5.8
 Contact:        [email protected]
 Description:    This setting is now deprecated as clock gating is handled solely by the f/w
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/command_buffers
+What:           /sys/kernel/debug/accel/<n>/command_buffers
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        [email protected]
 Description:    Displays a list with information about the currently allocated
                 command buffers
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/command_submission
+What:           /sys/kernel/debug/accel/<n>/command_submission
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        [email protected]
 Description:    Displays a list with information about the currently active
                 command submissions
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/command_submission_jobs
+What:           /sys/kernel/debug/accel/<n>/command_submission_jobs
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        [email protected]
 Description:    Displays a list with detailed information about each JOB (CB) of
                 each active command submission
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/data32
+What:           /sys/kernel/debug/accel/<n>/data32
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        [email protected]
@@ -50,7 +50,7 @@ Description:    Allows the root user to read or write directly through the
                 If the IOMMU is disabled, it also allows the root user to read
                 or write from the host a device VA of a host mapped memory
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/data64
+What:           /sys/kernel/debug/accel/<n>/data64
 Date:           Jan 2020
 KernelVersion:  5.6
 Contact:        [email protected]
@@ -65,7 +65,7 @@ Description:    Allows the root user to read or write 64 bit data directly
                 If the IOMMU is disabled, it also allows the root user to read
                 or write from the host a device VA of a host mapped memory
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/data_dma
+What:           /sys/kernel/debug/accel/<n>/data_dma
 Date:           Apr 2021
 KernelVersion:  5.13
 Contact:        [email protected]
@@ -79,26 +79,26 @@ Description:    Allows the root user to read from the device's internal
                 a very long time.
                 This interface doesn't support concurrency in the same device.
                 In GAUDI and GOYA, this action can cause undefined behavior
-                in case the it is done while the device is executing user
+                in case it is done while the device is executing user
                 workloads.
                 Only supported on GAUDI at this stage.
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/device
+What:           /sys/kernel/debug/accel/<n>/device
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        [email protected]
 Description:    Enables the root user to set the device to specific state.
                 Valid values are "disable", "enable", "suspend", "resume".
                 User can read this property to see the valid values
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/device_release_watchdog_timeout
+What:           /sys/kernel/debug/accel/<n>/device_release_watchdog_timeout
 Date:           Oct 2022
 KernelVersion:  6.2
 Contact:        [email protected]
 Description:    The watchdog timeout value in seconds for a device release upon
                 certain error cases, after which the device is reset.
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/dma_size
+What:           /sys/kernel/debug/accel/<n>/dma_size
 Date:           Apr 2021
 KernelVersion:  5.13
 Contact:        [email protected]
@@ -108,7 +108,7 @@ 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
+What:           /sys/kernel/debug/accel/<n>/dump_razwi_events
 Date:           Aug 2022
 KernelVersion:  5.20
 Contact:        [email protected]
@@ -117,38 +117,38 @@ Description:    Dumps all razwi events to dmesg if exist.
                 the routine will clear the status register.
                 Usage: cat dump_razwi_events
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/dump_security_violations
+What:           /sys/kernel/debug/accel/<n>/dump_security_violations
 Date:           Jan 2021
 KernelVersion:  5.12
 Contact:        [email protected]
 Description:    Dumps all security violations to dmesg. This will also ack
                 all security violations meanings those violations will not be
                 dumped next time user calls this API
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/engines
+What:           /sys/kernel/debug/accel/<n>/engines
 Date:           Jul 2019
 KernelVersion:  5.3
 Contact:        [email protected]
 Description:    Displays the status registers values of the device engines and
                 their derived idle status
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/i2c_addr
+What:           /sys/kernel/debug/accel/<n>/i2c_addr
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        [email protected]
 Description:    Sets I2C device address for I2C transaction that is generated
                 by the device's CPU, Not available when device is loaded with secured
                 firmware
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/i2c_bus
+What:           /sys/kernel/debug/accel/<n>/i2c_bus
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        [email protected]
 Description:    Sets I2C bus address for I2C transaction that is generated by
                 the device's CPU, Not available when device is loaded with secured
                 firmware
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/i2c_data
+What:           /sys/kernel/debug/accel/<n>/i2c_data
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        [email protected]
@@ -157,79 +157,79 @@ Description:    Triggers an I2C transaction that is generated by the device's
                 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
+What:           /sys/kernel/debug/accel/<n>/i2c_len
 Date:           Dec 2021
 KernelVersion:  5.17
 Contact:        [email protected]
 Description:    Sets I2C length in bytes for I2C transaction that is generated by
                 the device's CPU, Not available when device is loaded with secured
                 firmware
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/i2c_reg
+What:           /sys/kernel/debug/accel/<n>/i2c_reg
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        [email protected]
 Description:    Sets I2C register id for I2C transaction that is generated by
                 the device's CPU, Not available when device is loaded with secured
                 firmware
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/led0
+What:           /sys/kernel/debug/accel/<n>/led0
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        [email protected]
 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
+What:           /sys/kernel/debug/accel/<n>/led1
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        [email protected]
 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
+What:           /sys/kernel/debug/accel/<n>/led2
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        [email protected]
 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
+What:           /sys/kernel/debug/accel/<n>/memory_scrub
 Date:           May 2022
 KernelVersion:  5.19
 Contact:        [email protected]
 Description:    Allows the root user to scrub the dram memory. The scrubbing
                 value can be set using the debugfs file memory_scrub_val.
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/memory_scrub_val
+What:           /sys/kernel/debug/accel/<n>/memory_scrub_val
 Date:           May 2022
 KernelVersion:  5.19
 Contact:        [email protected]
 Description:    The value to which the dram will be set to when the user
                 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
+What:           /sys/kernel/debug/accel/<n>/mmu
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        [email protected]
 Description:    Displays the hop values and physical address for a given ASID
                 and virtual address. The user should write the ASID and VA into
                 the file and then read the file to get the result.
                 e.g. to display info about VA 0x1000 for ASID 1 you need to do:
-                echo "1 0x1000" > /sys/kernel/debug/habanalabs/hl0/mmu
+                echo "1 0x1000" > /sys/kernel/debug/accel/0/mmu
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/mmu_error
+What:           /sys/kernel/debug/accel/<n>/mmu_error
 Date:           Mar 2021
 KernelVersion:  5.12
 Contact:        [email protected]
 Description:    Check and display page fault or access violation mmu errors for
                 all MMUs specified in mmu_cap_mask.
                 e.g. to display error info for MMU hw cap bit 9, you need to do:
-                echo "0x200" > /sys/kernel/debug/habanalabs/hl0/mmu_error
-                cat /sys/kernel/debug/habanalabs/hl0/mmu_error
+                echo "0x200" > /sys/kernel/debug/accel/0/mmu_error
+                cat /sys/kernel/debug/accel/0/mmu_error
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/monitor_dump
+What:           /sys/kernel/debug/accel/<n>/monitor_dump
 Date:           Mar 2022
 KernelVersion:  5.19
 Contact:        [email protected]
@@ -243,7 +243,7 @@ Description:    Allows the root user to dump monitors status from the device's
                 This interface doesn't support concurrency in the same device.
                 Only supported on GAUDI.
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/monitor_dump_trig
+What:           /sys/kernel/debug/accel/<n>/monitor_dump_trig
 Date:           Mar 2022
 KernelVersion:  5.19
 Contact:        [email protected]
@@ -253,22 +253,22 @@ Description:    Triggers dump of monitor data. The value to trigger the operatio
                 When the write is finished, the user can read the "monitor_dump"
                 blob
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/set_power_state
+What:           /sys/kernel/debug/accel/<n>/set_power_state
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        [email protected]
 Description:    Sets the PCI power state. Valid values are "1" for D0 and "2"
                 for D3Hot
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/skip_reset_on_timeout
+What:           /sys/kernel/debug/accel/<n>/skip_reset_on_timeout
 Date:           Jun 2021
 KernelVersion:  5.13
 Contact:        [email protected]
 Description:    Sets the skip reset on timeout option for the device. Value of
                 "0" means device will be reset in case some CS has timed out,
                 otherwise it will not be reset.
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/state_dump
+What:           /sys/kernel/debug/accel/<n>/state_dump
 Date:           Oct 2021
 KernelVersion:  5.15
 Contact:        [email protected]
@@ -279,37 +279,37 @@ Description:    Gets the state dump occurring on a CS timeout or failure.
                 Writing an integer X discards X state dumps, so that the
                 next read would return X+1-st newest state dump.
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/stop_on_err
+What:           /sys/kernel/debug/accel/<n>/stop_on_err
 Date:           Mar 2020
 KernelVersion:  5.6
 Contact:        [email protected]
 Description:    Sets the stop-on_error option for the device engines. Value of
                 "0" is for disable, otherwise enable.
                 Relevant only for GOYA and GAUDI.
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/timeout_locked
+What:           /sys/kernel/debug/accel/<n>/timeout_locked
 Date:           Sep 2021
 KernelVersion:  5.16
 Contact:        [email protected]
 Description:    Sets the command submission timeout value in seconds.
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/userptr
+What:           /sys/kernel/debug/accel/<n>/userptr
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        [email protected]
-Description:    Displays a list with information about the currently user
+Description:    Displays a list with information about the current user
                 pointers (user virtual addresses) that are pinned and mapped
                 to DMA addresses
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/userptr_lookup
+What:           /sys/kernel/debug/accel/<n>/userptr_lookup
 Date:           Oct 2021
 KernelVersion:  5.15
 Contact:        [email protected]
 Description:    Allows to search for specific user pointers (user virtual
                 addresses) that are pinned and mapped to DMA addresses, and see
                 their resolution to the specific dma address.
 
-What:           /sys/kernel/debug/habanalabs/hl<n>/vm
+What:           /sys/kernel/debug/accel/<n>/vm
 Date:           Jan 2019
 KernelVersion:  5.1
 Contact:        [email protected]