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path: root/drivers/crypto/nx/nx-common-pseries.c
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2023-02-14crypto: nx - Fix sparse warningsHerbert Xu1-2/+4
This driver generates a large number of sparse warnings due to two issues. First of all the structure nx842_devdata is defined inline causing the __rcu tag to be added to all users of it. This easily fixed by splitting up the struct definition. The second issue is with kdoc markers being incomplete. The trivial case of nx842_exec_vas has been fixed, while the other incomplete documentation has simply been downgraded to normal C comments. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-07-08crypto: nx - Hold the reference returned by of_find_compatible_nodeLiang He1-1/+4
In nx842_pseries_init(), we should hold the reference returned by of_find_compatible_node() and use it to call of_node_put to keep refcount balance. Signed-off-by: Liang He <windhl@126.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-02-18crypto: nx - Constify static attribute_group structsRikard Falkeborn1-2/+2
The only usage of these is to pass their address to sysfs_{create,remove}_group(), which takes pointers to const struct attribute_group. Make them const to allow the compiler to put them in read-only memory. Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com> Reviewed-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2021-07-02Merge tag 'powerpc-5.14-1' of ↵Linus Torvalds1-0/+1268
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - A big series refactoring parts of our KVM code, and converting some to C. - Support for ARCH_HAS_SET_MEMORY, and ARCH_HAS_STRICT_MODULE_RWX on some CPUs. - Support for the Microwatt soft-core. - Optimisations to our interrupt return path on 64-bit. - Support for userspace access to the NX GZIP accelerator on PowerVM on Power10. - Enable KUAP and KUEP by default on 32-bit Book3S CPUs. - Other smaller features, fixes & cleanups. Thanks to: Andy Shevchenko, Aneesh Kumar K.V, Arnd Bergmann, Athira Rajeev, Baokun Li, Benjamin Herrenschmidt, Bharata B Rao, Christophe Leroy, Daniel Axtens, Daniel Henrique Barboza, Finn Thain, Geoff Levand, Haren Myneni, Jason Wang, Jiapeng Chong, Joel Stanley, Jordan Niethe, Kajol Jain, Nathan Chancellor, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Nick Desaulniers, Paul Mackerras, Russell Currey, Sathvika Vasireddy, Shaokun Zhang, Stephen Rothwell, Sudeep Holla, Suraj Jitindar Singh, Tom Rix, Vaibhav Jain, YueHaibing, Zhang Jianhua, and Zhen Lei. * tag 'powerpc-5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (218 commits) powerpc: Only build restart_table.c for 64s powerpc/64s: move ret_from_fork etc above __end_soft_masked powerpc/64s/interrupt: clean up interrupt return labels powerpc/64/interrupt: add missing kprobe annotations on interrupt exit symbols powerpc/64: enable MSR[EE] in irq replay pt_regs powerpc/64s/interrupt: preserve regs->softe for NMI interrupts powerpc/64s: add a table of implicit soft-masked addresses powerpc/64e: remove implicit soft-masking and interrupt exit restart logic powerpc/64e: fix CONFIG_RELOCATABLE build warnings powerpc/64s: fix hash page fault interrupt handler powerpc/4xx: Fix setup_kuep() on SMP powerpc/32s: Fix setup_{kuap/kuep}() on SMP powerpc/interrupt: Use names in check_return_regs_valid() powerpc/interrupt: Also use exit_must_hard_disable() on PPC32 powerpc/sysfs: Replace sizeof(arr)/sizeof(arr[0]) with ARRAY_SIZE powerpc/ptrace: Refactor regs_set_return_{msr/ip} powerpc/ptrace: Move set_return_regs_changed() before regs_set_return_{msr/ip} powerpc/stacktrace: Fix spurious "stale" traces in raise_backtrace_ipi() powerpc/pseries/vas: Include irqdomain.h powerpc: mark local variables around longjmp as volatile ...
2021-06-20crypto/nx: Register and unregister VAS interface on PowerVMHaren Myneni1-0/+8
The user space uses /dev/crypto/nx-gzip interface to setup VAS windows, create paste mapping and close windows. This patch adds changes to create/remove this interface with VAS register/unregister functions on PowerVM platform. Signed-off-by: Haren Myneni <haren@linux.ibm.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/121ea1f4eb3004f3b8f4fe8abefaecc88b292efd.camel@linux.ibm.com
2021-06-20crypto/nx: Add sysfs interface to export NX capabilitiesHaren Myneni1-0/+43
Export NX-GZIP capabilities to usrespace in sysfs /sys/devices/vio/ibm,compression-v1/nx_gzip_caps directory. These are queried by userspace accelerator libraries to set minimum length heuristics and maximum limits on request sizes. NX-GZIP capabilities: min_compress_len /*Recommended minimum compress length in bytes*/ min_decompress_len /*Recommended minimum decompress length in bytes*/ req_max_processed_len /* Maximum number of bytes processed in one request */ NX will return RMA_Reject if the request buffer size is greater than req_max_processed_len. Signed-off-by: Haren Myneni <haren@linux.ibm.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/510da86abbd904878d5f13d74aba72603c37d783.camel@linux.ibm.com
2021-06-20crypto/nx: Get NX capabilities for GZIP coprocessor typeHaren Myneni1-0/+87
The hypervisor provides different NX capabilities that it supports. These capabilities such as recommended minimum compression / decompression lengths and the maximum request buffer size in bytes are used to define the user space NX request. NX will reject the request if the buffer size is more than the maximum buffer size. Whereas compression / decompression lengths are recommended values for better performance. Changes to get NX overall capabilities which points to the specific features that the hypervisor supports. Then retrieve the capabilities for the specific feature (available only for NXGZIP). Signed-off-by: Haren Myneni <haren@linux.ibm.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/f2b6a1fb8b6112595a73d81c67a35af4e7f5d0a3.camel@linux.ibm.com
2021-06-20crypto/nx: Rename nx-842-pseries file name to nx-common-pseriesHaren Myneni1-0/+1129
Rename nx-842-pseries.c to nx-common-pseries.c to add code for new GZIP compression type. The actual functionality is not changed in this patch. Signed-off-by: Haren Myneni <haren@linux.ibm.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1fcf672209a14ea8944bd3e49c8a7381c8f450f8.camel@linux.ibm.com
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