kernel/linux.git/include/uapi/misc, branch v5.18.2

misc: fastrpc: Add support to secure memory map

2022-03-18T13:11:00+00:00

This patch adds support to secure memory allocations for DSP. It repurposes the reserved field in struct fastrpc_invoke_args to add attributes to invoke request, for example to setup a secure memory map for dsp. Secure memory is assigned to DSP Virtual Machine IDs using Qualcomm SCM calls. Signed-off-by: Vamsi Krishna Gattupalli Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20220214161002.6831-9-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman

misc: fastrpc: check before loading process to the DSP

2022-03-18T13:11:00+00:00

Reject session if DSP domain is secure, device node is non-secure and signed PD is requested. Secure device node can access DSP without any restriction. Unsigned PD offload is only allowed for the DSP domain that can support unsigned offloading. Signed-off-by: Jeya R Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20220214161002.6831-7-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman

misc: fastrpc: Add support to get DSP capabilities

2022-03-18T13:11:00+00:00

Add support to get DSP capabilities. The capability information is cached on driver. Signed-off-by: Jeya R Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20220214161002.6831-4-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman

misc: fastrpc: add support for FASTRPC_IOCTL_MEM_MAP/UNMAP

2022-03-18T13:11:00+00:00

Add support for IOCTL requests to map and unmap on DSP based on map flags. Signed-off-by: Jeya R Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20220214161002.6831-3-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman

habanalabs: allow user to set allocation page size

2022-02-28T12:22:05+00:00

In future ASICs the MMU will be able to work with multiple page sizes, thus a new flag is added to allow the user to set the requested page size. This flag is added since the whole DRAM is allocated for the user and the user also should be familiar with the memory usage use case. As such, the user may choose to "over allocate" memory in favor of performance (for instance- large page allocations covers more memory in less TLB entries). For example: say available page sizes are of 1MB and 32MB. If user wants to allocate 40MB the user can either set page size to 1MB and allocate the exact amount of memory (but will result in 40 TLB entries) or the user can use 32MB pages, "waste" 8MB of physical memory but occupy only 2 TLB entries. Note that this feature will be available only to ASIC that supports multiple DRAM page sizes. Signed-off-by: Ohad Sharabi Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: use kernel-doc for memory ioctl documentation

2022-02-28T12:22:05+00:00

Re-format the comments for the memory ioctl structure to be in kernel-doc style. Signed-off-by: Ohad Sharabi Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: Timestamps buffers registration

2022-02-28T12:22:04+00:00

Timestamp registration API allows the user to register a timestamp record event which will make the driver set timestamp when CQ counter reaches the target value and write it to a specific location specified by the user. This is a non blocking API, unlike the wait_for_interrupt which is a blocking one. Signed-off-by: farah kassabri Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: expose number of user interrupts

2022-02-28T12:22:03+00:00

Currently we only expose to the user the ID of the first available user interrupt. To make user interrupts allocation truly dynamic, we need to also expose the number of user interrupts. Signed-off-by: Oded Gabbay

habanalabs: change wait_for_interrupt implementation

2021-12-26T06:59:09+00:00

Currently the cq counters are allocated in userspace memory, and mapped by the driver to the device address space. A new requirement that is part of new future API related to this one, requires that cq counters will be allocated in kernel memory. We leverage the existing cb_create API with KERNEL_MAPPED flag set to allocate this memory. That way we gain two things: 1. The memory cannot be freed while in use since it's protected by refcount in driver. 2. No need to wake up the user thread upon each interrupt from CQ, because the kernel has direct access to the counter. Therefore, it can make comparison with the target value in the interrupt handler and wake up the user thread only if the counter reaches the target value. This is instead of waking the thread up to copy counter value from user then go sleep again if target value wasn't reached. Signed-off-by: farah kassabri Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: add SOB information to signal submission uAPI

2021-12-26T06:59:07+00:00

For debug purpose, add SOB address and SOB initial counter value before current submission to uAPI output. Using SOB address and initial counter, user can calculate how much of the submmision has been completed. Signed-off-by: Dani Liberman Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay