linux-dev/drivers/misc/habanalabs/common/debugfs.c, branch linus/master

habanalabs: add device memory scrub ability through debugfs

2022-05-22T19:01:20Z

Add the ability to scrub the device memory with a given value. Add file 'dram_mem_scrub_val' to set the value and a file 'dram_mem_scrub' to scrub the dram. This is very important to help during automated tests, when you want the CI system to randomize the memory before training certain DL topologies. Signed-off-by: Dafna Hirschfeld Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay Signed-off-by: Greg Kroah-Hartman

habanalabs: use unified memory manager for CB flow

2022-05-22T19:01:19Z

With the new code required for the flow added, we can now switch to using the new memory manager infrastructure, removing the old code. Signed-off-by: Yuri Nudelman Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay Signed-off-by: Greg Kroah-Hartman

habanalabs: Stop using iommu_present()

2022-05-22T19:01:18Z

Even if an IOMMU might be present for some PCI segment in the system, that doesn't necessarily mean it provides translation for the device we care about. Replace iommu_present() with a more appropriate check. Signed-off-by: Robin Murphy Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay Signed-off-by: Greg Kroah-Hartman

habanalabs: support debugfs Byte access to device DRAM

2022-05-22T19:01:18Z

The habanalabs HW requires memory resources to be used by its internal hardware structures. These structures are allocated and initialized by the driver. We would like to use the device HBM for that purpose. This memory is io-remapped and accessed using the writel()/writeb()/writew() commands. Since some of the HW structures are one byte in size we need to add support for the writeb() and readb() functions in the driver. Signed-off-by: Moti Haimovski Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay Signed-off-by: Greg Kroah-Hartman

habanalabs: use for_each_sgtable_dma_sg for dma sgt

2022-05-22T19:01:18Z

Instead of using for_each_sg when iterating sgt that contains dma entries, use the more proper for_each_sgtable_dma_sg macro. In addition, both Goya and Gaudi have the exact same implementation of the asic function that encapsulate the usage of this macro, so it is better to move that implementation to the common code. Signed-off-by: Ohad Sharabi Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay Signed-off-by: Greg Kroah-Hartman

habanalabs: unify code for memory access from debugfs

2022-05-22T19:01:16Z

Currently each asic version implements 4 callbacks: 'debugfs_{read32/write32/read64/write64}' There is a lot of code duplication among the different callbacks of all asic versions. This patch unify the code in order to avoid the code duplication by iterating the pci_mem_region array in hl_device and use its fields instead of macros. Signed-off-by: Dafna Hirschfeld Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay Signed-off-by: Greg Kroah-Hartman

habanalabs/gaudi: add debugfs to fetch internal sync status

2022-05-22T18:57:37Z

When Gaudi device is secured the monitors data in the configuration space is blocked from PCI access. As we need to enable user to get sync-manager monitors registers when debugging, this patch adds a debugfs that dumps the information to a binary file (blob). When a root user will trigger the dump, the driver will send request to the f/w to fill a data structure containing dump of all monitors registers. Signed-off-by: Ohad Sharabi Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay Signed-off-by: Greg Kroah-Hartman

habanalabs: Add check for pci_enable_device

2022-02-28T12:22:06Z

As the potential failure of the pci_enable_device(), it should be better to check the return value and return error if fails. Fixes: 70b2f993ea4a ("habanalabs: create common folder") Signed-off-by: Jiasheng Jiang Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: enable stop-on-error debugfs setting per ASIC

2022-02-28T12:22:05Z

On Goya and Gaudi, the stop-on-error configuration can be set via debugfs. However, in future devices, this configuration will always be enabled. Modify the debugfs node to be allowed only for ASICs that support this dynamic configuration. Signed-off-by: Tomer Tayar Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs/gaudi: disable CGM permanently

2022-02-28T12:22:01Z

Due to the need of SynapseAI to configure all TPC engines from a single QMAN, the driver must disable CGM and never allow the user to enable it. Otherwise, the configuration of the TPC engines will fail. Signed-off-by: Oded Gabbay