From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- drivers/crypto/ccree/cc_cipher.c | 1509 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 1509 insertions(+) create mode 100644 drivers/crypto/ccree/cc_cipher.c (limited to 'drivers/crypto/ccree/cc_cipher.c') diff --git a/drivers/crypto/ccree/cc_cipher.c b/drivers/crypto/ccree/cc_cipher.c new file mode 100644 index 000000000..2cd44d745 --- /dev/null +++ b/drivers/crypto/ccree/cc_cipher.c @@ -0,0 +1,1509 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (C) 2012-2019 ARM Limited (or its affiliates). */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "cc_driver.h" +#include "cc_lli_defs.h" +#include "cc_buffer_mgr.h" +#include "cc_cipher.h" +#include "cc_request_mgr.h" + +#define MAX_SKCIPHER_SEQ_LEN 6 + +#define template_skcipher template_u.skcipher + +struct cc_user_key_info { + u8 *key; + dma_addr_t key_dma_addr; +}; + +struct cc_hw_key_info { + enum cc_hw_crypto_key key1_slot; + enum cc_hw_crypto_key key2_slot; +}; + +struct cc_cpp_key_info { + u8 slot; + enum cc_cpp_alg alg; +}; + +enum cc_key_type { + CC_UNPROTECTED_KEY, /* User key */ + CC_HW_PROTECTED_KEY, /* HW (FDE) key */ + CC_POLICY_PROTECTED_KEY, /* CPP key */ + CC_INVALID_PROTECTED_KEY /* Invalid key */ +}; + +struct cc_cipher_ctx { + struct cc_drvdata *drvdata; + int keylen; + int cipher_mode; + int flow_mode; + unsigned int flags; + enum cc_key_type key_type; + struct cc_user_key_info user; + union { + struct cc_hw_key_info hw; + struct cc_cpp_key_info cpp; + }; + struct crypto_shash *shash_tfm; + struct crypto_skcipher *fallback_tfm; + bool fallback_on; +}; + +static void cc_cipher_complete(struct device *dev, void *cc_req, int err); + +static inline enum cc_key_type cc_key_type(struct crypto_tfm *tfm) +{ + struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + + return ctx_p->key_type; +} + +static int validate_keys_sizes(struct cc_cipher_ctx *ctx_p, u32 size) +{ + switch (ctx_p->flow_mode) { + case S_DIN_to_AES: + switch (size) { + case CC_AES_128_BIT_KEY_SIZE: + case CC_AES_192_BIT_KEY_SIZE: + if (ctx_p->cipher_mode != DRV_CIPHER_XTS) + return 0; + break; + case CC_AES_256_BIT_KEY_SIZE: + return 0; + case (CC_AES_192_BIT_KEY_SIZE * 2): + case (CC_AES_256_BIT_KEY_SIZE * 2): + if (ctx_p->cipher_mode == DRV_CIPHER_XTS || + ctx_p->cipher_mode == DRV_CIPHER_ESSIV) + return 0; + break; + default: + break; + } + break; + case S_DIN_to_DES: + if (size == DES3_EDE_KEY_SIZE || size == DES_KEY_SIZE) + return 0; + break; + case S_DIN_to_SM4: + if (size == SM4_KEY_SIZE) + return 0; + break; + default: + break; + } + return -EINVAL; +} + +static int validate_data_size(struct cc_cipher_ctx *ctx_p, + unsigned int size) +{ + switch (ctx_p->flow_mode) { + case S_DIN_to_AES: + switch (ctx_p->cipher_mode) { + case DRV_CIPHER_XTS: + case DRV_CIPHER_CBC_CTS: + if (size >= AES_BLOCK_SIZE) + return 0; + break; + case DRV_CIPHER_OFB: + case DRV_CIPHER_CTR: + return 0; + case DRV_CIPHER_ECB: + case DRV_CIPHER_CBC: + case DRV_CIPHER_ESSIV: + if (IS_ALIGNED(size, AES_BLOCK_SIZE)) + return 0; + break; + default: + break; + } + break; + case S_DIN_to_DES: + if (IS_ALIGNED(size, DES_BLOCK_SIZE)) + return 0; + break; + case S_DIN_to_SM4: + switch (ctx_p->cipher_mode) { + case DRV_CIPHER_CTR: + return 0; + case DRV_CIPHER_ECB: + case DRV_CIPHER_CBC: + if (IS_ALIGNED(size, SM4_BLOCK_SIZE)) + return 0; + break; + default: + break; + } + break; + default: + break; + } + return -EINVAL; +} + +static int cc_cipher_init(struct crypto_tfm *tfm) +{ + struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + struct cc_crypto_alg *cc_alg = + container_of(tfm->__crt_alg, struct cc_crypto_alg, + skcipher_alg.base); + struct device *dev = drvdata_to_dev(cc_alg->drvdata); + unsigned int max_key_buf_size = cc_alg->skcipher_alg.max_keysize; + unsigned int fallback_req_size = 0; + + dev_dbg(dev, "Initializing context @%p for %s\n", ctx_p, + crypto_tfm_alg_name(tfm)); + + ctx_p->cipher_mode = cc_alg->cipher_mode; + ctx_p->flow_mode = cc_alg->flow_mode; + ctx_p->drvdata = cc_alg->drvdata; + + if (ctx_p->cipher_mode == DRV_CIPHER_ESSIV) { + const char *name = crypto_tfm_alg_name(tfm); + + /* Alloc hash tfm for essiv */ + ctx_p->shash_tfm = crypto_alloc_shash("sha256", 0, 0); + if (IS_ERR(ctx_p->shash_tfm)) { + dev_err(dev, "Error allocating hash tfm for ESSIV.\n"); + return PTR_ERR(ctx_p->shash_tfm); + } + max_key_buf_size <<= 1; + + /* Alloc fallabck tfm or essiv when key size != 256 bit */ + ctx_p->fallback_tfm = + crypto_alloc_skcipher(name, 0, CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC); + + if (IS_ERR(ctx_p->fallback_tfm)) { + /* Note we're still allowing registration with no fallback since it's + * better to have most modes supported than none at all. + */ + dev_warn(dev, "Error allocating fallback algo %s. Some modes may be available.\n", + name); + ctx_p->fallback_tfm = NULL; + } else { + fallback_req_size = crypto_skcipher_reqsize(ctx_p->fallback_tfm); + } + } + + crypto_skcipher_set_reqsize(__crypto_skcipher_cast(tfm), + sizeof(struct cipher_req_ctx) + fallback_req_size); + + /* Allocate key buffer, cache line aligned */ + ctx_p->user.key = kzalloc(max_key_buf_size, GFP_KERNEL); + if (!ctx_p->user.key) + goto free_fallback; + + dev_dbg(dev, "Allocated key buffer in context. key=@%p\n", + ctx_p->user.key); + + /* Map key buffer */ + ctx_p->user.key_dma_addr = dma_map_single(dev, ctx_p->user.key, + max_key_buf_size, + DMA_TO_DEVICE); + if (dma_mapping_error(dev, ctx_p->user.key_dma_addr)) { + dev_err(dev, "Mapping Key %u B at va=%pK for DMA failed\n", + max_key_buf_size, ctx_p->user.key); + goto free_key; + } + dev_dbg(dev, "Mapped key %u B at va=%pK to dma=%pad\n", + max_key_buf_size, ctx_p->user.key, &ctx_p->user.key_dma_addr); + + return 0; + +free_key: + kfree(ctx_p->user.key); +free_fallback: + crypto_free_skcipher(ctx_p->fallback_tfm); + crypto_free_shash(ctx_p->shash_tfm); + + return -ENOMEM; +} + +static void cc_cipher_exit(struct crypto_tfm *tfm) +{ + struct crypto_alg *alg = tfm->__crt_alg; + struct cc_crypto_alg *cc_alg = + container_of(alg, struct cc_crypto_alg, + skcipher_alg.base); + unsigned int max_key_buf_size = cc_alg->skcipher_alg.max_keysize; + struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + struct device *dev = drvdata_to_dev(ctx_p->drvdata); + + dev_dbg(dev, "Clearing context @%p for %s\n", + crypto_tfm_ctx(tfm), crypto_tfm_alg_name(tfm)); + + if (ctx_p->cipher_mode == DRV_CIPHER_ESSIV) { + /* Free hash tfm for essiv */ + crypto_free_shash(ctx_p->shash_tfm); + ctx_p->shash_tfm = NULL; + crypto_free_skcipher(ctx_p->fallback_tfm); + ctx_p->fallback_tfm = NULL; + } + + /* Unmap key buffer */ + dma_unmap_single(dev, ctx_p->user.key_dma_addr, max_key_buf_size, + DMA_TO_DEVICE); + dev_dbg(dev, "Unmapped key buffer key_dma_addr=%pad\n", + &ctx_p->user.key_dma_addr); + + /* Free key buffer in context */ + dev_dbg(dev, "Free key buffer in context. key=@%p\n", ctx_p->user.key); + kfree_sensitive(ctx_p->user.key); +} + +struct tdes_keys { + u8 key1[DES_KEY_SIZE]; + u8 key2[DES_KEY_SIZE]; + u8 key3[DES_KEY_SIZE]; +}; + +static enum cc_hw_crypto_key cc_slot_to_hw_key(u8 slot_num) +{ + switch (slot_num) { + case 0: + return KFDE0_KEY; + case 1: + return KFDE1_KEY; + case 2: + return KFDE2_KEY; + case 3: + return KFDE3_KEY; + } + return END_OF_KEYS; +} + +static u8 cc_slot_to_cpp_key(u8 slot_num) +{ + return (slot_num - CC_FIRST_CPP_KEY_SLOT); +} + +static inline enum cc_key_type cc_slot_to_key_type(u8 slot_num) +{ + if (slot_num >= CC_FIRST_HW_KEY_SLOT && slot_num <= CC_LAST_HW_KEY_SLOT) + return CC_HW_PROTECTED_KEY; + else if (slot_num >= CC_FIRST_CPP_KEY_SLOT && + slot_num <= CC_LAST_CPP_KEY_SLOT) + return CC_POLICY_PROTECTED_KEY; + else + return CC_INVALID_PROTECTED_KEY; +} + +static int cc_cipher_sethkey(struct crypto_skcipher *sktfm, const u8 *key, + unsigned int keylen) +{ + struct crypto_tfm *tfm = crypto_skcipher_tfm(sktfm); + struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + struct device *dev = drvdata_to_dev(ctx_p->drvdata); + struct cc_hkey_info hki; + + dev_dbg(dev, "Setting HW key in context @%p for %s. keylen=%u\n", + ctx_p, crypto_tfm_alg_name(tfm), keylen); + dump_byte_array("key", key, keylen); + + /* STAT_PHASE_0: Init and sanity checks */ + + /* This check the size of the protected key token */ + if (keylen != sizeof(hki)) { + dev_err(dev, "Unsupported protected key size %d.\n", keylen); + return -EINVAL; + } + + memcpy(&hki, key, keylen); + + /* The real key len for crypto op is the size of the HW key + * referenced by the HW key slot, not the hardware key token + */ + keylen = hki.keylen; + + if (validate_keys_sizes(ctx_p, keylen)) { + dev_dbg(dev, "Unsupported key size %d.\n", keylen); + return -EINVAL; + } + + ctx_p->keylen = keylen; + ctx_p->fallback_on = false; + + switch (cc_slot_to_key_type(hki.hw_key1)) { + case CC_HW_PROTECTED_KEY: + if (ctx_p->flow_mode == S_DIN_to_SM4) { + dev_err(dev, "Only AES HW protected keys are supported\n"); + return -EINVAL; + } + + ctx_p->hw.key1_slot = cc_slot_to_hw_key(hki.hw_key1); + if (ctx_p->hw.key1_slot == END_OF_KEYS) { + dev_err(dev, "Unsupported hw key1 number (%d)\n", + hki.hw_key1); + return -EINVAL; + } + + if (ctx_p->cipher_mode == DRV_CIPHER_XTS || + ctx_p->cipher_mode == DRV_CIPHER_ESSIV) { + if (hki.hw_key1 == hki.hw_key2) { + dev_err(dev, "Illegal hw key numbers (%d,%d)\n", + hki.hw_key1, hki.hw_key2); + return -EINVAL; + } + + ctx_p->hw.key2_slot = cc_slot_to_hw_key(hki.hw_key2); + if (ctx_p->hw.key2_slot == END_OF_KEYS) { + dev_err(dev, "Unsupported hw key2 number (%d)\n", + hki.hw_key2); + return -EINVAL; + } + } + + ctx_p->key_type = CC_HW_PROTECTED_KEY; + dev_dbg(dev, "HW protected key %d/%d set\n.", + ctx_p->hw.key1_slot, ctx_p->hw.key2_slot); + break; + + case CC_POLICY_PROTECTED_KEY: + if (ctx_p->drvdata->hw_rev < CC_HW_REV_713) { + dev_err(dev, "CPP keys not supported in this hardware revision.\n"); + return -EINVAL; + } + + if (ctx_p->cipher_mode != DRV_CIPHER_CBC && + ctx_p->cipher_mode != DRV_CIPHER_CTR) { + dev_err(dev, "CPP keys only supported in CBC or CTR modes.\n"); + return -EINVAL; + } + + ctx_p->cpp.slot = cc_slot_to_cpp_key(hki.hw_key1); + if (ctx_p->flow_mode == S_DIN_to_AES) + ctx_p->cpp.alg = CC_CPP_AES; + else /* Must be SM4 since due to sethkey registration */ + ctx_p->cpp.alg = CC_CPP_SM4; + ctx_p->key_type = CC_POLICY_PROTECTED_KEY; + dev_dbg(dev, "policy protected key alg: %d slot: %d.\n", + ctx_p->cpp.alg, ctx_p->cpp.slot); + break; + + default: + dev_err(dev, "Unsupported protected key (%d)\n", hki.hw_key1); + return -EINVAL; + } + + return 0; +} + +static int cc_cipher_setkey(struct crypto_skcipher *sktfm, const u8 *key, + unsigned int keylen) +{ + struct crypto_tfm *tfm = crypto_skcipher_tfm(sktfm); + struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + struct device *dev = drvdata_to_dev(ctx_p->drvdata); + struct cc_crypto_alg *cc_alg = + container_of(tfm->__crt_alg, struct cc_crypto_alg, + skcipher_alg.base); + unsigned int max_key_buf_size = cc_alg->skcipher_alg.max_keysize; + + dev_dbg(dev, "Setting key in context @%p for %s. keylen=%u\n", + ctx_p, crypto_tfm_alg_name(tfm), keylen); + dump_byte_array("key", key, keylen); + + /* STAT_PHASE_0: Init and sanity checks */ + + if (validate_keys_sizes(ctx_p, keylen)) { + dev_dbg(dev, "Invalid key size %d.\n", keylen); + return -EINVAL; + } + + if (ctx_p->cipher_mode == DRV_CIPHER_ESSIV) { + + /* We only support 256 bit ESSIV-CBC-AES keys */ + if (keylen != AES_KEYSIZE_256) { + unsigned int flags = crypto_tfm_get_flags(tfm) & CRYPTO_TFM_REQ_MASK; + + if (likely(ctx_p->fallback_tfm)) { + ctx_p->fallback_on = true; + crypto_skcipher_clear_flags(ctx_p->fallback_tfm, + CRYPTO_TFM_REQ_MASK); + crypto_skcipher_clear_flags(ctx_p->fallback_tfm, flags); + return crypto_skcipher_setkey(ctx_p->fallback_tfm, key, keylen); + } + + dev_dbg(dev, "Unsupported key size %d and no fallback.\n", keylen); + return -EINVAL; + } + + /* Internal ESSIV key buffer is double sized */ + max_key_buf_size <<= 1; + } + + ctx_p->fallback_on = false; + ctx_p->key_type = CC_UNPROTECTED_KEY; + + /* + * Verify DES weak keys + * Note that we're dropping the expanded key since the + * HW does the expansion on its own. + */ + if (ctx_p->flow_mode == S_DIN_to_DES) { + if ((keylen == DES3_EDE_KEY_SIZE && + verify_skcipher_des3_key(sktfm, key)) || + verify_skcipher_des_key(sktfm, key)) { + dev_dbg(dev, "weak DES key"); + return -EINVAL; + } + } + + if (ctx_p->cipher_mode == DRV_CIPHER_XTS && + xts_verify_key(sktfm, key, keylen)) { + dev_dbg(dev, "weak XTS key"); + return -EINVAL; + } + + /* STAT_PHASE_1: Copy key to ctx */ + dma_sync_single_for_cpu(dev, ctx_p->user.key_dma_addr, + max_key_buf_size, DMA_TO_DEVICE); + + memcpy(ctx_p->user.key, key, keylen); + + if (ctx_p->cipher_mode == DRV_CIPHER_ESSIV) { + /* sha256 for key2 - use sw implementation */ + int err; + + err = crypto_shash_tfm_digest(ctx_p->shash_tfm, + ctx_p->user.key, keylen, + ctx_p->user.key + keylen); + if (err) { + dev_err(dev, "Failed to hash ESSIV key.\n"); + return err; + } + + keylen <<= 1; + } + dma_sync_single_for_device(dev, ctx_p->user.key_dma_addr, + max_key_buf_size, DMA_TO_DEVICE); + ctx_p->keylen = keylen; + + dev_dbg(dev, "return safely"); + return 0; +} + +static int cc_out_setup_mode(struct cc_cipher_ctx *ctx_p) +{ + switch (ctx_p->flow_mode) { + case S_DIN_to_AES: + return S_AES_to_DOUT; + case S_DIN_to_DES: + return S_DES_to_DOUT; + case S_DIN_to_SM4: + return S_SM4_to_DOUT; + default: + return ctx_p->flow_mode; + } +} + +static void cc_setup_readiv_desc(struct crypto_tfm *tfm, + struct cipher_req_ctx *req_ctx, + unsigned int ivsize, struct cc_hw_desc desc[], + unsigned int *seq_size) +{ + struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + struct device *dev = drvdata_to_dev(ctx_p->drvdata); + int cipher_mode = ctx_p->cipher_mode; + int flow_mode = cc_out_setup_mode(ctx_p); + int direction = req_ctx->gen_ctx.op_type; + dma_addr_t iv_dma_addr = req_ctx->gen_ctx.iv_dma_addr; + + if (ctx_p->key_type == CC_POLICY_PROTECTED_KEY) + return; + + switch (cipher_mode) { + case DRV_CIPHER_ECB: + break; + case DRV_CIPHER_CBC: + case DRV_CIPHER_CBC_CTS: + case DRV_CIPHER_CTR: + case DRV_CIPHER_OFB: + /* Read next IV */ + hw_desc_init(&desc[*seq_size]); + set_dout_dlli(&desc[*seq_size], iv_dma_addr, ivsize, NS_BIT, 1); + set_cipher_config0(&desc[*seq_size], direction); + set_flow_mode(&desc[*seq_size], flow_mode); + set_cipher_mode(&desc[*seq_size], cipher_mode); + if (cipher_mode == DRV_CIPHER_CTR || + cipher_mode == DRV_CIPHER_OFB) { + set_setup_mode(&desc[*seq_size], SETUP_WRITE_STATE1); + } else { + set_setup_mode(&desc[*seq_size], SETUP_WRITE_STATE0); + } + set_queue_last_ind(ctx_p->drvdata, &desc[*seq_size]); + (*seq_size)++; + break; + case DRV_CIPHER_XTS: + case DRV_CIPHER_ESSIV: + /* IV */ + hw_desc_init(&desc[*seq_size]); + set_setup_mode(&desc[*seq_size], SETUP_WRITE_STATE1); + set_cipher_mode(&desc[*seq_size], cipher_mode); + set_cipher_config0(&desc[*seq_size], direction); + set_flow_mode(&desc[*seq_size], flow_mode); + set_dout_dlli(&desc[*seq_size], iv_dma_addr, CC_AES_BLOCK_SIZE, + NS_BIT, 1); + set_queue_last_ind(ctx_p->drvdata, &desc[*seq_size]); + (*seq_size)++; + break; + default: + dev_err(dev, "Unsupported cipher mode (%d)\n", cipher_mode); + } +} + + +static void cc_setup_state_desc(struct crypto_tfm *tfm, + struct cipher_req_ctx *req_ctx, + unsigned int ivsize, unsigned int nbytes, + struct cc_hw_desc desc[], + unsigned int *seq_size) +{ + struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + struct device *dev = drvdata_to_dev(ctx_p->drvdata); + int cipher_mode = ctx_p->cipher_mode; + int flow_mode = ctx_p->flow_mode; + int direction = req_ctx->gen_ctx.op_type; + dma_addr_t iv_dma_addr = req_ctx->gen_ctx.iv_dma_addr; + + switch (cipher_mode) { + case DRV_CIPHER_ECB: + break; + case DRV_CIPHER_CBC: + case DRV_CIPHER_CBC_CTS: + case DRV_CIPHER_CTR: + case DRV_CIPHER_OFB: + /* Load IV */ + hw_desc_init(&desc[*seq_size]); + set_din_type(&desc[*seq_size], DMA_DLLI, iv_dma_addr, ivsize, + NS_BIT); + set_cipher_config0(&desc[*seq_size], direction); + set_flow_mode(&desc[*seq_size], flow_mode); + set_cipher_mode(&desc[*seq_size], cipher_mode); + if (cipher_mode == DRV_CIPHER_CTR || + cipher_mode == DRV_CIPHER_OFB) { + set_setup_mode(&desc[*seq_size], SETUP_LOAD_STATE1); + } else { + set_setup_mode(&desc[*seq_size], SETUP_LOAD_STATE0); + } + (*seq_size)++; + break; + case DRV_CIPHER_XTS: + case DRV_CIPHER_ESSIV: + break; + default: + dev_err(dev, "Unsupported cipher mode (%d)\n", cipher_mode); + } +} + + +static void cc_setup_xex_state_desc(struct crypto_tfm *tfm, + struct cipher_req_ctx *req_ctx, + unsigned int ivsize, unsigned int nbytes, + struct cc_hw_desc desc[], + unsigned int *seq_size) +{ + struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + struct device *dev = drvdata_to_dev(ctx_p->drvdata); + int cipher_mode = ctx_p->cipher_mode; + int flow_mode = ctx_p->flow_mode; + int direction = req_ctx->gen_ctx.op_type; + dma_addr_t key_dma_addr = ctx_p->user.key_dma_addr; + unsigned int key_len = (ctx_p->keylen / 2); + dma_addr_t iv_dma_addr = req_ctx->gen_ctx.iv_dma_addr; + unsigned int key_offset = key_len; + + switch (cipher_mode) { + case DRV_CIPHER_ECB: + break; + case DRV_CIPHER_CBC: + case DRV_CIPHER_CBC_CTS: + case DRV_CIPHER_CTR: + case DRV_CIPHER_OFB: + break; + case DRV_CIPHER_XTS: + case DRV_CIPHER_ESSIV: + + if (cipher_mode == DRV_CIPHER_ESSIV) + key_len = SHA256_DIGEST_SIZE; + + /* load XEX key */ + hw_desc_init(&desc[*seq_size]); + set_cipher_mode(&desc[*seq_size], cipher_mode); + set_cipher_config0(&desc[*seq_size], direction); + if (cc_key_type(tfm) == CC_HW_PROTECTED_KEY) { + set_hw_crypto_key(&desc[*seq_size], + ctx_p->hw.key2_slot); + } else { + set_din_type(&desc[*seq_size], DMA_DLLI, + (key_dma_addr + key_offset), + key_len, NS_BIT); + } + set_xex_data_unit_size(&desc[*seq_size], nbytes); + set_flow_mode(&desc[*seq_size], S_DIN_to_AES2); + set_key_size_aes(&desc[*seq_size], key_len); + set_setup_mode(&desc[*seq_size], SETUP_LOAD_XEX_KEY); + (*seq_size)++; + + /* Load IV */ + hw_desc_init(&desc[*seq_size]); + set_setup_mode(&desc[*seq_size], SETUP_LOAD_STATE1); + set_cipher_mode(&desc[*seq_size], cipher_mode); + set_cipher_config0(&desc[*seq_size], direction); + set_key_size_aes(&desc[*seq_size], key_len); + set_flow_mode(&desc[*seq_size], flow_mode); + set_din_type(&desc[*seq_size], DMA_DLLI, iv_dma_addr, + CC_AES_BLOCK_SIZE, NS_BIT); + (*seq_size)++; + break; + default: + dev_err(dev, "Unsupported cipher mode (%d)\n", cipher_mode); + } +} + +static int cc_out_flow_mode(struct cc_cipher_ctx *ctx_p) +{ + switch (ctx_p->flow_mode) { + case S_DIN_to_AES: + return DIN_AES_DOUT; + case S_DIN_to_DES: + return DIN_DES_DOUT; + case S_DIN_to_SM4: + return DIN_SM4_DOUT; + default: + return ctx_p->flow_mode; + } +} + +static void cc_setup_key_desc(struct crypto_tfm *tfm, + struct cipher_req_ctx *req_ctx, + unsigned int nbytes, struct cc_hw_desc desc[], + unsigned int *seq_size) +{ + struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + struct device *dev = drvdata_to_dev(ctx_p->drvdata); + int cipher_mode = ctx_p->cipher_mode; + int flow_mode = ctx_p->flow_mode; + int direction = req_ctx->gen_ctx.op_type; + dma_addr_t key_dma_addr = ctx_p->user.key_dma_addr; + unsigned int key_len = ctx_p->keylen; + unsigned int din_size; + + switch (cipher_mode) { + case DRV_CIPHER_CBC: + case DRV_CIPHER_CBC_CTS: + case DRV_CIPHER_CTR: + case DRV_CIPHER_OFB: + case DRV_CIPHER_ECB: + /* Load key */ + hw_desc_init(&desc[*seq_size]); + set_cipher_mode(&desc[*seq_size], cipher_mode); + set_cipher_config0(&desc[*seq_size], direction); + + if (cc_key_type(tfm) == CC_POLICY_PROTECTED_KEY) { + /* We use the AES key size coding for all CPP algs */ + set_key_size_aes(&desc[*seq_size], key_len); + set_cpp_crypto_key(&desc[*seq_size], ctx_p->cpp.slot); + flow_mode = cc_out_flow_mode(ctx_p); + } else { + if (flow_mode == S_DIN_to_AES) { + if (cc_key_type(tfm) == CC_HW_PROTECTED_KEY) { + set_hw_crypto_key(&desc[*seq_size], + ctx_p->hw.key1_slot); + } else { + /* CC_POLICY_UNPROTECTED_KEY + * Invalid keys are filtered out in + * sethkey() + */ + din_size = (key_len == 24) ? + AES_MAX_KEY_SIZE : key_len; + + set_din_type(&desc[*seq_size], DMA_DLLI, + key_dma_addr, din_size, + NS_BIT); + } + set_key_size_aes(&desc[*seq_size], key_len); + } else { + /*des*/ + set_din_type(&desc[*seq_size], DMA_DLLI, + key_dma_addr, key_len, NS_BIT); + set_key_size_des(&desc[*seq_size], key_len); + } + set_setup_mode(&desc[*seq_size], SETUP_LOAD_KEY0); + } + set_flow_mode(&desc[*seq_size], flow_mode); + (*seq_size)++; + break; + case DRV_CIPHER_XTS: + case DRV_CIPHER_ESSIV: + /* Load AES key */ + hw_desc_init(&desc[*seq_size]); + set_cipher_mode(&desc[*seq_size], cipher_mode); + set_cipher_config0(&desc[*seq_size], direction); + if (cc_key_type(tfm) == CC_HW_PROTECTED_KEY) { + set_hw_crypto_key(&desc[*seq_size], + ctx_p->hw.key1_slot); + } else { + set_din_type(&desc[*seq_size], DMA_DLLI, key_dma_addr, + (key_len / 2), NS_BIT); + } + set_key_size_aes(&desc[*seq_size], (key_len / 2)); + set_flow_mode(&desc[*seq_size], flow_mode); + set_setup_mode(&desc[*seq_size], SETUP_LOAD_KEY0); + (*seq_size)++; + break; + default: + dev_err(dev, "Unsupported cipher mode (%d)\n", cipher_mode); + } +} + +static void cc_setup_mlli_desc(struct crypto_tfm *tfm, + struct cipher_req_ctx *req_ctx, + struct scatterlist *dst, struct scatterlist *src, + unsigned int nbytes, void *areq, + struct cc_hw_desc desc[], unsigned int *seq_size) +{ + struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + struct device *dev = drvdata_to_dev(ctx_p->drvdata); + + if (req_ctx->dma_buf_type == CC_DMA_BUF_MLLI) { + /* bypass */ + dev_dbg(dev, " bypass params addr %pad length 0x%X addr 0x%08X\n", + &req_ctx->mlli_params.mlli_dma_addr, + req_ctx->mlli_params.mlli_len, + ctx_p->drvdata->mlli_sram_addr); + hw_desc_init(&desc[*seq_size]); + set_din_type(&desc[*seq_size], DMA_DLLI, + req_ctx->mlli_params.mlli_dma_addr, + req_ctx->mlli_params.mlli_len, NS_BIT); + set_dout_sram(&desc[*seq_size], + ctx_p->drvdata->mlli_sram_addr, + req_ctx->mlli_params.mlli_len); + set_flow_mode(&desc[*seq_size], BYPASS); + (*seq_size)++; + } +} + +static void cc_setup_flow_desc(struct crypto_tfm *tfm, + struct cipher_req_ctx *req_ctx, + struct scatterlist *dst, struct scatterlist *src, + unsigned int nbytes, struct cc_hw_desc desc[], + unsigned int *seq_size) +{ + struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + struct device *dev = drvdata_to_dev(ctx_p->drvdata); + unsigned int flow_mode = cc_out_flow_mode(ctx_p); + bool last_desc = (ctx_p->key_type == CC_POLICY_PROTECTED_KEY || + ctx_p->cipher_mode == DRV_CIPHER_ECB); + + /* Process */ + if (req_ctx->dma_buf_type == CC_DMA_BUF_DLLI) { + dev_dbg(dev, " data params addr %pad length 0x%X\n", + &sg_dma_address(src), nbytes); + dev_dbg(dev, " data params addr %pad length 0x%X\n", + &sg_dma_address(dst), nbytes); + hw_desc_init(&desc[*seq_size]); + set_din_type(&desc[*seq_size], DMA_DLLI, sg_dma_address(src), + nbytes, NS_BIT); + set_dout_dlli(&desc[*seq_size], sg_dma_address(dst), + nbytes, NS_BIT, (!last_desc ? 0 : 1)); + if (last_desc) + set_queue_last_ind(ctx_p->drvdata, &desc[*seq_size]); + + set_flow_mode(&desc[*seq_size], flow_mode); + (*seq_size)++; + } else { + hw_desc_init(&desc[*seq_size]); + set_din_type(&desc[*seq_size], DMA_MLLI, + ctx_p->drvdata->mlli_sram_addr, + req_ctx->in_mlli_nents, NS_BIT); + if (req_ctx->out_nents == 0) { + dev_dbg(dev, " din/dout params addr 0x%08X addr 0x%08X\n", + ctx_p->drvdata->mlli_sram_addr, + ctx_p->drvdata->mlli_sram_addr); + set_dout_mlli(&desc[*seq_size], + ctx_p->drvdata->mlli_sram_addr, + req_ctx->in_mlli_nents, NS_BIT, + (!last_desc ? 0 : 1)); + } else { + dev_dbg(dev, " din/dout params addr 0x%08X addr 0x%08X\n", + ctx_p->drvdata->mlli_sram_addr, + ctx_p->drvdata->mlli_sram_addr + + (u32)LLI_ENTRY_BYTE_SIZE * req_ctx->in_nents); + set_dout_mlli(&desc[*seq_size], + (ctx_p->drvdata->mlli_sram_addr + + (LLI_ENTRY_BYTE_SIZE * + req_ctx->in_mlli_nents)), + req_ctx->out_mlli_nents, NS_BIT, + (!last_desc ? 0 : 1)); + } + if (last_desc) + set_queue_last_ind(ctx_p->drvdata, &desc[*seq_size]); + + set_flow_mode(&desc[*seq_size], flow_mode); + (*seq_size)++; + } +} + +static void cc_cipher_complete(struct device *dev, void *cc_req, int err) +{ + struct skcipher_request *req = (struct skcipher_request *)cc_req; + struct scatterlist *dst = req->dst; + struct scatterlist *src = req->src; + struct cipher_req_ctx *req_ctx = skcipher_request_ctx(req); + struct crypto_skcipher *sk_tfm = crypto_skcipher_reqtfm(req); + unsigned int ivsize = crypto_skcipher_ivsize(sk_tfm); + + if (err != -EINPROGRESS) { + /* Not a BACKLOG notification */ + cc_unmap_cipher_request(dev, req_ctx, ivsize, src, dst); + memcpy(req->iv, req_ctx->iv, ivsize); + kfree_sensitive(req_ctx->iv); + } + + skcipher_request_complete(req, err); +} + +static int cc_cipher_process(struct skcipher_request *req, + enum drv_crypto_direction direction) +{ + struct crypto_skcipher *sk_tfm = crypto_skcipher_reqtfm(req); + struct crypto_tfm *tfm = crypto_skcipher_tfm(sk_tfm); + struct cipher_req_ctx *req_ctx = skcipher_request_ctx(req); + unsigned int ivsize = crypto_skcipher_ivsize(sk_tfm); + struct scatterlist *dst = req->dst; + struct scatterlist *src = req->src; + unsigned int nbytes = req->cryptlen; + void *iv = req->iv; + struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + struct device *dev = drvdata_to_dev(ctx_p->drvdata); + struct cc_hw_desc desc[MAX_SKCIPHER_SEQ_LEN]; + struct cc_crypto_req cc_req = {}; + int rc; + unsigned int seq_len = 0; + gfp_t flags = cc_gfp_flags(&req->base); + + dev_dbg(dev, "%s req=%p iv=%p nbytes=%d\n", + ((direction == DRV_CRYPTO_DIRECTION_ENCRYPT) ? + "Encrypt" : "Decrypt"), req, iv, nbytes); + + /* STAT_PHASE_0: Init and sanity checks */ + + if (validate_data_size(ctx_p, nbytes)) { + dev_dbg(dev, "Unsupported data size %d.\n", nbytes); + rc = -EINVAL; + goto exit_process; + } + if (nbytes == 0) { + /* No data to process is valid */ + rc = 0; + goto exit_process; + } + + if (ctx_p->fallback_on) { + struct skcipher_request *subreq = skcipher_request_ctx(req); + + *subreq = *req; + skcipher_request_set_tfm(subreq, ctx_p->fallback_tfm); + if (direction == DRV_CRYPTO_DIRECTION_ENCRYPT) + return crypto_skcipher_encrypt(subreq); + else + return crypto_skcipher_decrypt(subreq); + } + + /* The IV we are handed may be allocated from the stack so + * we must copy it to a DMAable buffer before use. + */ + req_ctx->iv = kmemdup(iv, ivsize, flags); + if (!req_ctx->iv) { + rc = -ENOMEM; + goto exit_process; + } + + /* Setup request structure */ + cc_req.user_cb = cc_cipher_complete; + cc_req.user_arg = req; + + /* Setup CPP operation details */ + if (ctx_p->key_type == CC_POLICY_PROTECTED_KEY) { + cc_req.cpp.is_cpp = true; + cc_req.cpp.alg = ctx_p->cpp.alg; + cc_req.cpp.slot = ctx_p->cpp.slot; + } + + /* Setup request context */ + req_ctx->gen_ctx.op_type = direction; + + /* STAT_PHASE_1: Map buffers */ + + rc = cc_map_cipher_request(ctx_p->drvdata, req_ctx, ivsize, nbytes, + req_ctx->iv, src, dst, flags); + if (rc) { + dev_err(dev, "map_request() failed\n"); + goto exit_process; + } + + /* STAT_PHASE_2: Create sequence */ + + /* Setup state (IV) */ + cc_setup_state_desc(tfm, req_ctx, ivsize, nbytes, desc, &seq_len); + /* Setup MLLI line, if needed */ + cc_setup_mlli_desc(tfm, req_ctx, dst, src, nbytes, req, desc, &seq_len); + /* Setup key */ + cc_setup_key_desc(tfm, req_ctx, nbytes, desc, &seq_len); + /* Setup state (IV and XEX key) */ + cc_setup_xex_state_desc(tfm, req_ctx, ivsize, nbytes, desc, &seq_len); + /* Data processing */ + cc_setup_flow_desc(tfm, req_ctx, dst, src, nbytes, desc, &seq_len); + /* Read next IV */ + cc_setup_readiv_desc(tfm, req_ctx, ivsize, desc, &seq_len); + + /* STAT_PHASE_3: Lock HW and push sequence */ + + rc = cc_send_request(ctx_p->drvdata, &cc_req, desc, seq_len, + &req->base); + if (rc != -EINPROGRESS && rc != -EBUSY) { + /* Failed to send the request or request completed + * synchronously + */ + cc_unmap_cipher_request(dev, req_ctx, ivsize, src, dst); + } + +exit_process: + if (rc != -EINPROGRESS && rc != -EBUSY) { + kfree_sensitive(req_ctx->iv); + } + + return rc; +} + +static int cc_cipher_encrypt(struct skcipher_request *req) +{ + struct cipher_req_ctx *req_ctx = skcipher_request_ctx(req); + + memset(req_ctx, 0, sizeof(*req_ctx)); + + return cc_cipher_process(req, DRV_CRYPTO_DIRECTION_ENCRYPT); +} + +static int cc_cipher_decrypt(struct skcipher_request *req) +{ + struct cipher_req_ctx *req_ctx = skcipher_request_ctx(req); + + memset(req_ctx, 0, sizeof(*req_ctx)); + + return cc_cipher_process(req, DRV_CRYPTO_DIRECTION_DECRYPT); +} + +/* Block cipher alg */ +static const struct cc_alg_template skcipher_algs[] = { + { + .name = "xts(paes)", + .driver_name = "xts-paes-ccree", + .blocksize = 1, + .template_skcipher = { + .setkey = cc_cipher_sethkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = CC_HW_KEY_SIZE, + .max_keysize = CC_HW_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_XTS, + .flow_mode = S_DIN_to_AES, + .min_hw_rev = CC_HW_REV_630, + .std_body = CC_STD_NIST, + .sec_func = true, + }, + { + .name = "essiv(cbc(paes),sha256)", + .driver_name = "essiv-paes-ccree", + .blocksize = AES_BLOCK_SIZE, + .template_skcipher = { + .setkey = cc_cipher_sethkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = CC_HW_KEY_SIZE, + .max_keysize = CC_HW_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_ESSIV, + .flow_mode = S_DIN_to_AES, + .min_hw_rev = CC_HW_REV_712, + .std_body = CC_STD_NIST, + .sec_func = true, + }, + { + .name = "ecb(paes)", + .driver_name = "ecb-paes-ccree", + .blocksize = AES_BLOCK_SIZE, + .template_skcipher = { + .setkey = cc_cipher_sethkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = CC_HW_KEY_SIZE, + .max_keysize = CC_HW_KEY_SIZE, + .ivsize = 0, + }, + .cipher_mode = DRV_CIPHER_ECB, + .flow_mode = S_DIN_to_AES, + .min_hw_rev = CC_HW_REV_712, + .std_body = CC_STD_NIST, + .sec_func = true, + }, + { + .name = "cbc(paes)", + .driver_name = "cbc-paes-ccree", + .blocksize = AES_BLOCK_SIZE, + .template_skcipher = { + .setkey = cc_cipher_sethkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = CC_HW_KEY_SIZE, + .max_keysize = CC_HW_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_CBC, + .flow_mode = S_DIN_to_AES, + .min_hw_rev = CC_HW_REV_712, + .std_body = CC_STD_NIST, + .sec_func = true, + }, + { + .name = "ofb(paes)", + .driver_name = "ofb-paes-ccree", + .blocksize = AES_BLOCK_SIZE, + .template_skcipher = { + .setkey = cc_cipher_sethkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = CC_HW_KEY_SIZE, + .max_keysize = CC_HW_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_OFB, + .flow_mode = S_DIN_to_AES, + .min_hw_rev = CC_HW_REV_712, + .std_body = CC_STD_NIST, + .sec_func = true, + }, + { + .name = "cts(cbc(paes))", + .driver_name = "cts-cbc-paes-ccree", + .blocksize = AES_BLOCK_SIZE, + .template_skcipher = { + .setkey = cc_cipher_sethkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = CC_HW_KEY_SIZE, + .max_keysize = CC_HW_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_CBC_CTS, + .flow_mode = S_DIN_to_AES, + .min_hw_rev = CC_HW_REV_712, + .std_body = CC_STD_NIST, + .sec_func = true, + }, + { + .name = "ctr(paes)", + .driver_name = "ctr-paes-ccree", + .blocksize = 1, + .template_skcipher = { + .setkey = cc_cipher_sethkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = CC_HW_KEY_SIZE, + .max_keysize = CC_HW_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_CTR, + .flow_mode = S_DIN_to_AES, + .min_hw_rev = CC_HW_REV_712, + .std_body = CC_STD_NIST, + .sec_func = true, + }, + { + /* See https://www.mail-archive.com/linux-crypto@vger.kernel.org/msg40576.html + * for the reason why this differs from the generic + * implementation. + */ + .name = "xts(aes)", + .driver_name = "xts-aes-ccree", + .blocksize = 1, + .template_skcipher = { + .setkey = cc_cipher_setkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE * 2, + .max_keysize = AES_MAX_KEY_SIZE * 2, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_XTS, + .flow_mode = S_DIN_to_AES, + .min_hw_rev = CC_HW_REV_630, + .std_body = CC_STD_NIST, + }, + { + .name = "essiv(cbc(aes),sha256)", + .driver_name = "essiv-aes-ccree", + .blocksize = AES_BLOCK_SIZE, + .template_skcipher = { + .setkey = cc_cipher_setkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_ESSIV, + .flow_mode = S_DIN_to_AES, + .min_hw_rev = CC_HW_REV_712, + .std_body = CC_STD_NIST, + }, + { + .name = "ecb(aes)", + .driver_name = "ecb-aes-ccree", + .blocksize = AES_BLOCK_SIZE, + .template_skcipher = { + .setkey = cc_cipher_setkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = 0, + }, + .cipher_mode = DRV_CIPHER_ECB, + .flow_mode = S_DIN_to_AES, + .min_hw_rev = CC_HW_REV_630, + .std_body = CC_STD_NIST, + }, + { + .name = "cbc(aes)", + .driver_name = "cbc-aes-ccree", + .blocksize = AES_BLOCK_SIZE, + .template_skcipher = { + .setkey = cc_cipher_setkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_CBC, + .flow_mode = S_DIN_to_AES, + .min_hw_rev = CC_HW_REV_630, + .std_body = CC_STD_NIST, + }, + { + .name = "ofb(aes)", + .driver_name = "ofb-aes-ccree", + .blocksize = 1, + .template_skcipher = { + .setkey = cc_cipher_setkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_OFB, + .flow_mode = S_DIN_to_AES, + .min_hw_rev = CC_HW_REV_630, + .std_body = CC_STD_NIST, + }, + { + .name = "cts(cbc(aes))", + .driver_name = "cts-cbc-aes-ccree", + .blocksize = AES_BLOCK_SIZE, + .template_skcipher = { + .setkey = cc_cipher_setkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_CBC_CTS, + .flow_mode = S_DIN_to_AES, + .min_hw_rev = CC_HW_REV_630, + .std_body = CC_STD_NIST, + }, + { + .name = "ctr(aes)", + .driver_name = "ctr-aes-ccree", + .blocksize = 1, + .template_skcipher = { + .setkey = cc_cipher_setkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_CTR, + .flow_mode = S_DIN_to_AES, + .min_hw_rev = CC_HW_REV_630, + .std_body = CC_STD_NIST, + }, + { + .name = "cbc(des3_ede)", + .driver_name = "cbc-3des-ccree", + .blocksize = DES3_EDE_BLOCK_SIZE, + .template_skcipher = { + .setkey = cc_cipher_setkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = DES3_EDE_KEY_SIZE, + .max_keysize = DES3_EDE_KEY_SIZE, + .ivsize = DES3_EDE_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_CBC, + .flow_mode = S_DIN_to_DES, + .min_hw_rev = CC_HW_REV_630, + .std_body = CC_STD_NIST, + }, + { + .name = "ecb(des3_ede)", + .driver_name = "ecb-3des-ccree", + .blocksize = DES3_EDE_BLOCK_SIZE, + .template_skcipher = { + .setkey = cc_cipher_setkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = DES3_EDE_KEY_SIZE, + .max_keysize = DES3_EDE_KEY_SIZE, + .ivsize = 0, + }, + .cipher_mode = DRV_CIPHER_ECB, + .flow_mode = S_DIN_to_DES, + .min_hw_rev = CC_HW_REV_630, + .std_body = CC_STD_NIST, + }, + { + .name = "cbc(des)", + .driver_name = "cbc-des-ccree", + .blocksize = DES_BLOCK_SIZE, + .template_skcipher = { + .setkey = cc_cipher_setkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = DES_KEY_SIZE, + .max_keysize = DES_KEY_SIZE, + .ivsize = DES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_CBC, + .flow_mode = S_DIN_to_DES, + .min_hw_rev = CC_HW_REV_630, + .std_body = CC_STD_NIST, + }, + { + .name = "ecb(des)", + .driver_name = "ecb-des-ccree", + .blocksize = DES_BLOCK_SIZE, + .template_skcipher = { + .setkey = cc_cipher_setkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = DES_KEY_SIZE, + .max_keysize = DES_KEY_SIZE, + .ivsize = 0, + }, + .cipher_mode = DRV_CIPHER_ECB, + .flow_mode = S_DIN_to_DES, + .min_hw_rev = CC_HW_REV_630, + .std_body = CC_STD_NIST, + }, + { + .name = "cbc(sm4)", + .driver_name = "cbc-sm4-ccree", + .blocksize = SM4_BLOCK_SIZE, + .template_skcipher = { + .setkey = cc_cipher_setkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = SM4_KEY_SIZE, + .max_keysize = SM4_KEY_SIZE, + .ivsize = SM4_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_CBC, + .flow_mode = S_DIN_to_SM4, + .min_hw_rev = CC_HW_REV_713, + .std_body = CC_STD_OSCCA, + }, + { + .name = "ecb(sm4)", + .driver_name = "ecb-sm4-ccree", + .blocksize = SM4_BLOCK_SIZE, + .template_skcipher = { + .setkey = cc_cipher_setkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = SM4_KEY_SIZE, + .max_keysize = SM4_KEY_SIZE, + .ivsize = 0, + }, + .cipher_mode = DRV_CIPHER_ECB, + .flow_mode = S_DIN_to_SM4, + .min_hw_rev = CC_HW_REV_713, + .std_body = CC_STD_OSCCA, + }, + { + .name = "ctr(sm4)", + .driver_name = "ctr-sm4-ccree", + .blocksize = 1, + .template_skcipher = { + .setkey = cc_cipher_setkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = SM4_KEY_SIZE, + .max_keysize = SM4_KEY_SIZE, + .ivsize = SM4_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_CTR, + .flow_mode = S_DIN_to_SM4, + .min_hw_rev = CC_HW_REV_713, + .std_body = CC_STD_OSCCA, + }, + { + .name = "cbc(psm4)", + .driver_name = "cbc-psm4-ccree", + .blocksize = SM4_BLOCK_SIZE, + .template_skcipher = { + .setkey = cc_cipher_sethkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = CC_HW_KEY_SIZE, + .max_keysize = CC_HW_KEY_SIZE, + .ivsize = SM4_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_CBC, + .flow_mode = S_DIN_to_SM4, + .min_hw_rev = CC_HW_REV_713, + .std_body = CC_STD_OSCCA, + .sec_func = true, + }, + { + .name = "ctr(psm4)", + .driver_name = "ctr-psm4-ccree", + .blocksize = SM4_BLOCK_SIZE, + .template_skcipher = { + .setkey = cc_cipher_sethkey, + .encrypt = cc_cipher_encrypt, + .decrypt = cc_cipher_decrypt, + .min_keysize = CC_HW_KEY_SIZE, + .max_keysize = CC_HW_KEY_SIZE, + .ivsize = SM4_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_CTR, + .flow_mode = S_DIN_to_SM4, + .min_hw_rev = CC_HW_REV_713, + .std_body = CC_STD_OSCCA, + .sec_func = true, + }, +}; + +static struct cc_crypto_alg *cc_create_alg(const struct cc_alg_template *tmpl, + struct device *dev) +{ + struct cc_crypto_alg *t_alg; + struct skcipher_alg *alg; + + t_alg = devm_kzalloc(dev, sizeof(*t_alg), GFP_KERNEL); + if (!t_alg) + return ERR_PTR(-ENOMEM); + + alg = &t_alg->skcipher_alg; + + memcpy(alg, &tmpl->template_skcipher, sizeof(*alg)); + + snprintf(alg->base.cra_name, CRYPTO_MAX_ALG_NAME, "%s", tmpl->name); + snprintf(alg->base.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s", + tmpl->driver_name); + alg->base.cra_module = THIS_MODULE; + alg->base.cra_priority = CC_CRA_PRIO; + alg->base.cra_blocksize = tmpl->blocksize; + alg->base.cra_alignmask = 0; + alg->base.cra_ctxsize = sizeof(struct cc_cipher_ctx); + + alg->base.cra_init = cc_cipher_init; + alg->base.cra_exit = cc_cipher_exit; + alg->base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_KERN_DRIVER_ONLY; + + t_alg->cipher_mode = tmpl->cipher_mode; + t_alg->flow_mode = tmpl->flow_mode; + + return t_alg; +} + +int cc_cipher_free(struct cc_drvdata *drvdata) +{ + struct cc_crypto_alg *t_alg, *n; + + /* Remove registered algs */ + list_for_each_entry_safe(t_alg, n, &drvdata->alg_list, entry) { + crypto_unregister_skcipher(&t_alg->skcipher_alg); + list_del(&t_alg->entry); + } + return 0; +} + +int cc_cipher_alloc(struct cc_drvdata *drvdata) +{ + struct cc_crypto_alg *t_alg; + struct device *dev = drvdata_to_dev(drvdata); + int rc = -ENOMEM; + int alg; + + INIT_LIST_HEAD(&drvdata->alg_list); + + /* Linux crypto */ + dev_dbg(dev, "Number of algorithms = %zu\n", + ARRAY_SIZE(skcipher_algs)); + for (alg = 0; alg < ARRAY_SIZE(skcipher_algs); alg++) { + if ((skcipher_algs[alg].min_hw_rev > drvdata->hw_rev) || + !(drvdata->std_bodies & skcipher_algs[alg].std_body) || + (drvdata->sec_disabled && skcipher_algs[alg].sec_func)) + continue; + + dev_dbg(dev, "creating %s\n", skcipher_algs[alg].driver_name); + t_alg = cc_create_alg(&skcipher_algs[alg], dev); + if (IS_ERR(t_alg)) { + rc = PTR_ERR(t_alg); + dev_err(dev, "%s alg allocation failed\n", + skcipher_algs[alg].driver_name); + goto fail0; + } + t_alg->drvdata = drvdata; + + dev_dbg(dev, "registering %s\n", + skcipher_algs[alg].driver_name); + rc = crypto_register_skcipher(&t_alg->skcipher_alg); + dev_dbg(dev, "%s alg registration rc = %x\n", + t_alg->skcipher_alg.base.cra_driver_name, rc); + if (rc) { + dev_err(dev, "%s alg registration failed\n", + t_alg->skcipher_alg.base.cra_driver_name); + goto fail0; + } + + list_add_tail(&t_alg->entry, &drvdata->alg_list); + dev_dbg(dev, "Registered %s\n", + t_alg->skcipher_alg.base.cra_driver_name); + } + return 0; + +fail0: + cc_cipher_free(drvdata); + return rc; +} -- cgit v1.2.3