- 28 Feb, 2020 4 commits
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Ayush Sawal authored
This updates the maintainer list for chelsio crypto drivers. Signed-off-by:
Ayush Sawal <ayush.sawal@chelsio.com> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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Kalyani Akula authored
This patch adds AES driver support for the Xilinx ZynqMP SoC. Signed-off-by:
Mohan Marutirao Dhanawade <mohan.dhanawade@xilinx.com> Signed-off-by:
Kalyani Akula <kalyani.akula@xilinx.com> Acked-by:
Michal Simek <michal.simek@xilinx.com> Signed-off-by:
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Kalyani Akula authored
Add documentation to describe Xilinx ZynqMP AES-GCM driver bindings. Signed-off-by:
Rob Herring <robh@kernel.org> Acked-by:
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Kalyani Akula authored
Add ZynqMP firmware AES API to perform encryption/decryption of given data. Signed-off-by:
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- 22 Feb, 2020 36 commits
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Al Viro authored
kctx_len = (ntohl(KEY_CONTEXT_CTX_LEN_V(aeadctx->key_ctx_hdr)) << 4) - sizeof(chcr_req->key_ctx); can't possibly be endian-safe. Look: ->key_ctx_hdr is __be32. And KEY_CONTEXT_CTX_LEN_V is "shift up by 24 bits". On little-endian hosts it sees b0 b1 b2 b3 in memory, inteprets that into b0 + (b1 << 8) + (b2 << 16) + (b3 << 24), shifts up by 24, resulting in b0 << 24, does ntohl (byteswap on l-e), gets b0 and shifts that up by 4. So we get b0 * 16 - sizeof(...). Sounds reasonable, but on b-e we get b3 + (b2 << 8) + (b1 << 16) + (b0 << 24), shift up by 24, yielding b3 << 24, do ntohl (no-op on b-e) and then shift up by 4. Resulting in b3 << 28 - sizeof(...), i.e. slightly under b3 * 256M. Then we increase it some more and pass to alloc_skb() as size. Somehow I doubt that we really want a quarter-gigabyte skb allocation here... Note that when you are building those values in #define FILL_KEY_CTX_HDR(ck_size, mk_size, d_ck, opad, ctx_len) \ htonl(KEY_CONTEXT_VALID_V(1) | \ KEY_CONTEXT_CK_SIZE_V((ck_size)) | \ KEY_CONTEXT_MK_SIZE_V(mk_size) | \ KEY_CONTEXT_DUAL_CK_V((d_ck)) | \ KEY_CONTEXT_OPAD_PRESENT_V((opad)) | \ KEY_CONTEXT_SALT_PRESENT_V(1) | \ KEY_CONTEXT_CTX_LEN_V((ctx_len))) ctx_len ends up in the first octet (i.e. b0 in the above), which matches the current behaviour on l-e. If that's the intent, this thing should've been kctx_len = (KEY_CONTEXT_CTX_LEN_G(ntohl(aeadctx->key_ctx_hdr)) << 4) - sizeof(chcr_req->key_ctx); instead - fetch after ntohl() we get (b0 << 24) + (b1 << 16) + (b2 << 8) + b3, shift it down by 24 (b0), resuling in b0 * 16 - sizeof(...) both on l-e and on b-e. PS: when sparse warns you about endianness problems, it might be worth checking if there really is something wrong. And I don't mean "slap __force cast on it"... Signed-off-by:Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by:Gustavo A. R. Silva <gustavo@embeddedor.com> Acked-by:
Kamil Konieczny <k.konieczny@samsung.com> Signed-off-by:
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Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: -
Iuliana Prodan authored
Add crypto_engine support for HASH algorithms, to make use of the engine queue. The requests, with backlog flag, will be listed into crypto-engine queue and processed by CAAM when free. Only the backlog request are sent to crypto-engine since the others can be handled by CAAM, if free, especially since JR has up to 1024 entries (more than the 10 entries from crypto-engine). Signed-off-by:
Iuliana Prodan <iuliana.prodan@nxp.com> Reviewed-by:
Horia Geantă <horia.geanta@nxp.com> Signed-off-by:
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Iuliana Prodan authored
Add crypto_engine support for RSA algorithms, to make use of the engine queue. The requests, with backlog flag, will be listed into crypto-engine queue and processed by CAAM when free. In case the queue is empty, the request is directly sent to CAAM. Only the backlog request are sent to crypto-engine since the others can be handled by CAAM, if free, especially since JR has up to 1024 entries (more than the 10 entries from crypto-engine). Signed-off-by:
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Iuliana Prodan authored
Add crypto_engine support for AEAD algorithms, to make use of the engine queue. The requests, with backlog flag, will be listed into crypto-engine queue and processed by CAAM when free. If sending just the backlog request to crypto-engine, and non-blocking directly to CAAM, the latter requests have a better chance to be executed since JR has up to 1024 entries, more than the 10 entries from crypto-engine. Signed-off-by:
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Iuliana Prodan authored
Integrate crypto_engine into CAAM, to make use of the engine queue. Add support for SKCIPHER algorithms. This is intended to be used for CAAM backlogging support. The requests, with backlog flag (e.g. from dm-crypt) will be listed into crypto-engine queue and processed by CAAM when free. This changes the return codes for enqueuing a request: -EINPROGRESS if OK, -EBUSY if request is backlogged (via crypto-engine), -ENOSPC if the queue is full, -EIO if it cannot map the caller's descriptor. The requests, with backlog flag, will be listed into crypto-engine queue and processed by CAAM when free. Only the backlog request are sent to crypto-engine since the others can be handled by CAAM, if free, especially since JR has up to 1024 entries (more than the 10 entries from crypto-engine). Signed-off-by:
Franck LENORMAND <franck.lenormand@nxp.com> Reviewed-by:
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Iuliana Prodan authored
Based on commit 6b80ea38 ("crypto: change transient busy return code to -ENOSPC"), change the return code of caam_jr_enqueue function to -EINPROGRESS, in case of success, -ENOSPC in case the CAAM is busy (has no space left in job ring queue), -EIO if it cannot map the caller's descriptor. Update, also, the cases for resource-freeing for each algorithm type. This is done for later use, on backlogging support in CAAM. Signed-off-by:
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Iuliana Prodan authored
Create a common rsa_priv_f_done function, which based on private key form calls the specific unmap function. Signed-off-by:
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Iuliana Prodan authored
Changed parameters for ahash_edesc_alloc function: - remove flags since they can be computed in ahash_edesc_alloc, the only place they are needed; - use ahash_request instead of caam_hash_ctx, to be able to compute gfp flags. Signed-off-by:
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Iuliana Prodan authored
Create two common ahash_done_* functions with the dma direction as parameter. Then, these 2 are called with the proper direction for unmap. Signed-off-by:
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Iuliana Prodan authored
Create a common crypt function for each skcipher/aead/gcm/chachapoly algorithms and call it for encrypt/decrypt with the specific boolean - true for encrypt and false for decrypt. Signed-off-by:
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Geert Uytterhoeven authored
Fix a typo in a comment. Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
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Geert Uytterhoeven authored
As the lifetime of the hash data matches the lifetime of the driver, hash data can be allocated using the managed allocators. While at it, simplify cc_hash_free() by removing an unneeded check (hash_handle is always valid here). Signed-off-by:
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Geert Uytterhoeven authored
As the lifetime of the cipher data matches the lifetime of the driver, cipher data can be allocated using the managed allocators. Signed-off-by:
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Geert Uytterhoeven authored
As the lifetime of the AEAD data matches the lifetime of the driver, AEAD data can be allocated using the managed allocators. While at it, simplify cc_aead_free() by removing an unneeded cast, and an unneeded check (aead_handle is always valid here). Signed-off-by:
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Geert Uytterhoeven authored
Use the existing dev helper variable instead of plat_dev->dev. Signed-off-by:
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Geert Uytterhoeven authored
Fix grammar in a comment. Signed-off-by:
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Geert Uytterhoeven authored
Fix a typo in a comment. Signed-off-by:
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Geert Uytterhoeven authored
Miscellaneous improvements: - Start comment blocks with "/**" to enable kerneldoc, - Mark parameters using "@" instead of "\param", - Fix typos in parameter names, - Add missing function names to kerneldoc headers, - Add missing parameter and return value descriptions. Signed-off-by:
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Geert Uytterhoeven authored
Miscellaneous improvements: - Start comment blocks with "/**" to enable kerneldoc, - Mark parameters using "@" instead of "\param", - Fix copied is_dout parameter of cc_send_request(), - Add missing function names to kerneldoc headers, - Add missing parameter descriptions. Signed-off-by:
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Geert Uytterhoeven authored
Miscellaneous improvements: - Start comment blocks with "/**" to enable kerneldoc, - Mark parameters using "@" instead of "\param", - Add missing function names to kerneldoc headers, - Add missing parameter descriptions. Signed-off-by:
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Geert Uytterhoeven authored
Miscellaneous improvements: - Add missing parameter and return value descriptions. Signed-off-by:
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Geert Uytterhoeven authored
Miscellaneous improvements: - Start comment blocks with "/**" to enable kerneldoc, - Fix descriptor type of set_dout_mlli(), - Fix copied config parameter of set_cipher_config1(), - Fix copied config parameter of set_bytes_swap(), - Add missing function names to kerneldoc headers, - Add missing parameter descriptions, - Remove descriptions for nonexistent parameters, - Add missing colons, - Remove references to obsolete camelcase parameter names, - Sort according to actual parameter order, - Fix grammar and spelling. Signed-off-by:
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Geert Uytterhoeven authored
Normal comments should start with "/*". "/**" is reserver for kerneldoc. Signed-off-by:
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Geert Uytterhoeven authored
Extract the copy to SRAM of the initial values for a hash algorithm into its own function, to improve readability and ease maintenance. Signed-off-by:
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Geert Uytterhoeven authored
The cc_cipher_handle structure contains only a single member, and only one instance exists. Simplify the code and reduce memory consumption by moving this member to struct cc_drvdata. Signed-off-by:
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Geert Uytterhoeven authored
The buff_mgr_handle structure contains only a single member, and only one instance exists. Simplify the code and reduce memory consumption by moving this member to struct cc_drvdata. Signed-off-by:
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Geert Uytterhoeven authored
The cc_debugfs_ctx structure contains only a single member, and only one instance exists. Simplify the code and reduce memory consumption by moving this member to struct cc_drvdata. Signed-off-by:
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Geert Uytterhoeven authored
The cc_sram_ctx structure contains only a single member, and only one instance exists. Simplify the code and reduce memory consumption by moving this member to struct cc_drvdata. Signed-off-by:
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Geert Uytterhoeven authored
cc_pm_suspend() and cc_pm_resume() are not used outside drivers/crypto/ccree/cc_pm.c. Signed-off-by:
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Geert Uytterhoeven authored
If CONFIG_PM=y, cc_pm_is_dev_suspended() is just a wrapper around pm_runtime_suspended(). If CONFIG_PM=n, cc_pm_is_dev_suspended() a dummy that behaves exactly the same as the dummy for pm_runtime_suspended(). Hence remove cc_pm_is_dev_suspended(), and call pm_runtime_suspended() directly. Signed-off-by:
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Geert Uytterhoeven authored
If the driver is probed, it means a match was found in arm_ccree_dev_of_match[]. Hence we can just use the of_device_get_match_data() helper. Signed-off-by:
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Geert Uytterhoeven authored
Currently, a large part of the probe function runs before Runtime PM is enabled. As the driver manages the device's clock manually, this may work fine on some systems, but may break on platforms with a more complex power hierarchy. Fix this by moving the initialization of Runtime PM before the first register access (in cc_wait_for_reset_completion()), and putting the device to sleep only after the last access (in cc_set_ree_fips_status()). This allows to remove the pm_on flag, which was used to track manually if Runtime PM had been enabled or not. Remove the cc_pm_{init,go,fini}() wrappers, as they are called only once, and obscure operation. Signed-off-by: -
Geert Uytterhoeven authored
SRAM addresses are small integer offsets into local SRAM. Currently they are stored using a mixture of cc_sram_addr_t (u64), u32, and dma_addr_t types. Settle on u32, and remove the cc_sram_addr_t typedefs. This allows to drop several casts. Signed-off-by:
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Geert Uytterhoeven authored
The SRAM allocator does not support deallocating memory. Hence remove all references to freeing SRAM. Fix grammar while at it. Signed-off-by:
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