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/qce/common.c | 595 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 595 insertions(+) create mode 100644 drivers/crypto/qce/common.c (limited to 'drivers/crypto/qce/common.c') diff --git a/drivers/crypto/qce/common.c b/drivers/crypto/qce/common.c new file mode 100644 index 000000000..04253a8d3 --- /dev/null +++ b/drivers/crypto/qce/common.c @@ -0,0 +1,595 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2012-2014, The Linux Foundation. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "cipher.h" +#include "common.h" +#include "core.h" +#include "regs-v5.h" +#include "sha.h" +#include "aead.h" + +static inline u32 qce_read(struct qce_device *qce, u32 offset) +{ + return readl(qce->base + offset); +} + +static inline void qce_write(struct qce_device *qce, u32 offset, u32 val) +{ + writel(val, qce->base + offset); +} + +static inline void qce_write_array(struct qce_device *qce, u32 offset, + const u32 *val, unsigned int len) +{ + int i; + + for (i = 0; i < len; i++) + qce_write(qce, offset + i * sizeof(u32), val[i]); +} + +static inline void +qce_clear_array(struct qce_device *qce, u32 offset, unsigned int len) +{ + int i; + + for (i = 0; i < len; i++) + qce_write(qce, offset + i * sizeof(u32), 0); +} + +static u32 qce_config_reg(struct qce_device *qce, int little) +{ + u32 beats = (qce->burst_size >> 3) - 1; + u32 pipe_pair = qce->pipe_pair_id; + u32 config; + + config = (beats << REQ_SIZE_SHIFT) & REQ_SIZE_MASK; + config |= BIT(MASK_DOUT_INTR_SHIFT) | BIT(MASK_DIN_INTR_SHIFT) | + BIT(MASK_OP_DONE_INTR_SHIFT) | BIT(MASK_ERR_INTR_SHIFT); + config |= (pipe_pair << PIPE_SET_SELECT_SHIFT) & PIPE_SET_SELECT_MASK; + config &= ~HIGH_SPD_EN_N_SHIFT; + + if (little) + config |= BIT(LITTLE_ENDIAN_MODE_SHIFT); + + return config; +} + +void qce_cpu_to_be32p_array(__be32 *dst, const u8 *src, unsigned int len) +{ + __be32 *d = dst; + const u8 *s = src; + unsigned int n; + + n = len / sizeof(u32); + for (; n > 0; n--) { + *d = cpu_to_be32p((const __u32 *) s); + s += sizeof(__u32); + d++; + } +} + +static void qce_setup_config(struct qce_device *qce) +{ + u32 config; + + /* get big endianness */ + config = qce_config_reg(qce, 0); + + /* clear status */ + qce_write(qce, REG_STATUS, 0); + qce_write(qce, REG_CONFIG, config); +} + +static inline void qce_crypto_go(struct qce_device *qce, bool result_dump) +{ + if (result_dump) + qce_write(qce, REG_GOPROC, BIT(GO_SHIFT) | BIT(RESULTS_DUMP_SHIFT)); + else + qce_write(qce, REG_GOPROC, BIT(GO_SHIFT)); +} + +#if defined(CONFIG_CRYPTO_DEV_QCE_SHA) || defined(CONFIG_CRYPTO_DEV_QCE_AEAD) +static u32 qce_auth_cfg(unsigned long flags, u32 key_size, u32 auth_size) +{ + u32 cfg = 0; + + if (IS_CCM(flags) || IS_CMAC(flags)) + cfg |= AUTH_ALG_AES << AUTH_ALG_SHIFT; + else + cfg |= AUTH_ALG_SHA << AUTH_ALG_SHIFT; + + if (IS_CCM(flags) || IS_CMAC(flags)) { + if (key_size == AES_KEYSIZE_128) + cfg |= AUTH_KEY_SZ_AES128 << AUTH_KEY_SIZE_SHIFT; + else if (key_size == AES_KEYSIZE_256) + cfg |= AUTH_KEY_SZ_AES256 << AUTH_KEY_SIZE_SHIFT; + } + + if (IS_SHA1(flags) || IS_SHA1_HMAC(flags)) + cfg |= AUTH_SIZE_SHA1 << AUTH_SIZE_SHIFT; + else if (IS_SHA256(flags) || IS_SHA256_HMAC(flags)) + cfg |= AUTH_SIZE_SHA256 << AUTH_SIZE_SHIFT; + else if (IS_CMAC(flags)) + cfg |= AUTH_SIZE_ENUM_16_BYTES << AUTH_SIZE_SHIFT; + else if (IS_CCM(flags)) + cfg |= (auth_size - 1) << AUTH_SIZE_SHIFT; + + if (IS_SHA1(flags) || IS_SHA256(flags)) + cfg |= AUTH_MODE_HASH << AUTH_MODE_SHIFT; + else if (IS_SHA1_HMAC(flags) || IS_SHA256_HMAC(flags)) + cfg |= AUTH_MODE_HMAC << AUTH_MODE_SHIFT; + else if (IS_CCM(flags)) + cfg |= AUTH_MODE_CCM << AUTH_MODE_SHIFT; + else if (IS_CMAC(flags)) + cfg |= AUTH_MODE_CMAC << AUTH_MODE_SHIFT; + + if (IS_SHA(flags) || IS_SHA_HMAC(flags)) + cfg |= AUTH_POS_BEFORE << AUTH_POS_SHIFT; + + if (IS_CCM(flags)) + cfg |= QCE_MAX_NONCE_WORDS << AUTH_NONCE_NUM_WORDS_SHIFT; + + return cfg; +} +#endif + +#ifdef CONFIG_CRYPTO_DEV_QCE_SHA +static int qce_setup_regs_ahash(struct crypto_async_request *async_req) +{ + struct ahash_request *req = ahash_request_cast(async_req); + struct crypto_ahash *ahash = __crypto_ahash_cast(async_req->tfm); + struct qce_sha_reqctx *rctx = ahash_request_ctx_dma(req); + struct qce_alg_template *tmpl = to_ahash_tmpl(async_req->tfm); + struct qce_device *qce = tmpl->qce; + unsigned int digestsize = crypto_ahash_digestsize(ahash); + unsigned int blocksize = crypto_tfm_alg_blocksize(async_req->tfm); + __be32 auth[SHA256_DIGEST_SIZE / sizeof(__be32)] = {0}; + __be32 mackey[QCE_SHA_HMAC_KEY_SIZE / sizeof(__be32)] = {0}; + u32 auth_cfg = 0, config; + unsigned int iv_words; + + /* if not the last, the size has to be on the block boundary */ + if (!rctx->last_blk && req->nbytes % blocksize) + return -EINVAL; + + qce_setup_config(qce); + + if (IS_CMAC(rctx->flags)) { + qce_write(qce, REG_AUTH_SEG_CFG, 0); + qce_write(qce, REG_ENCR_SEG_CFG, 0); + qce_write(qce, REG_ENCR_SEG_SIZE, 0); + qce_clear_array(qce, REG_AUTH_IV0, 16); + qce_clear_array(qce, REG_AUTH_KEY0, 16); + qce_clear_array(qce, REG_AUTH_BYTECNT0, 4); + + auth_cfg = qce_auth_cfg(rctx->flags, rctx->authklen, digestsize); + } + + if (IS_SHA_HMAC(rctx->flags) || IS_CMAC(rctx->flags)) { + u32 authkey_words = rctx->authklen / sizeof(u32); + + qce_cpu_to_be32p_array(mackey, rctx->authkey, rctx->authklen); + qce_write_array(qce, REG_AUTH_KEY0, (u32 *)mackey, + authkey_words); + } + + if (IS_CMAC(rctx->flags)) + goto go_proc; + + if (rctx->first_blk) + memcpy(auth, rctx->digest, digestsize); + else + qce_cpu_to_be32p_array(auth, rctx->digest, digestsize); + + iv_words = (IS_SHA1(rctx->flags) || IS_SHA1_HMAC(rctx->flags)) ? 5 : 8; + qce_write_array(qce, REG_AUTH_IV0, (u32 *)auth, iv_words); + + if (rctx->first_blk) + qce_clear_array(qce, REG_AUTH_BYTECNT0, 4); + else + qce_write_array(qce, REG_AUTH_BYTECNT0, + (u32 *)rctx->byte_count, 2); + + auth_cfg = qce_auth_cfg(rctx->flags, 0, digestsize); + + if (rctx->last_blk) + auth_cfg |= BIT(AUTH_LAST_SHIFT); + else + auth_cfg &= ~BIT(AUTH_LAST_SHIFT); + + if (rctx->first_blk) + auth_cfg |= BIT(AUTH_FIRST_SHIFT); + else + auth_cfg &= ~BIT(AUTH_FIRST_SHIFT); + +go_proc: + qce_write(qce, REG_AUTH_SEG_CFG, auth_cfg); + qce_write(qce, REG_AUTH_SEG_SIZE, req->nbytes); + qce_write(qce, REG_AUTH_SEG_START, 0); + qce_write(qce, REG_ENCR_SEG_CFG, 0); + qce_write(qce, REG_SEG_SIZE, req->nbytes); + + /* get little endianness */ + config = qce_config_reg(qce, 1); + qce_write(qce, REG_CONFIG, config); + + qce_crypto_go(qce, true); + + return 0; +} +#endif + +#if defined(CONFIG_CRYPTO_DEV_QCE_SKCIPHER) || defined(CONFIG_CRYPTO_DEV_QCE_AEAD) +static u32 qce_encr_cfg(unsigned long flags, u32 aes_key_size) +{ + u32 cfg = 0; + + if (IS_AES(flags)) { + if (aes_key_size == AES_KEYSIZE_128) + cfg |= ENCR_KEY_SZ_AES128 << ENCR_KEY_SZ_SHIFT; + else if (aes_key_size == AES_KEYSIZE_256) + cfg |= ENCR_KEY_SZ_AES256 << ENCR_KEY_SZ_SHIFT; + } + + if (IS_AES(flags)) + cfg |= ENCR_ALG_AES << ENCR_ALG_SHIFT; + else if (IS_DES(flags) || IS_3DES(flags)) + cfg |= ENCR_ALG_DES << ENCR_ALG_SHIFT; + + if (IS_DES(flags)) + cfg |= ENCR_KEY_SZ_DES << ENCR_KEY_SZ_SHIFT; + + if (IS_3DES(flags)) + cfg |= ENCR_KEY_SZ_3DES << ENCR_KEY_SZ_SHIFT; + + switch (flags & QCE_MODE_MASK) { + case QCE_MODE_ECB: + cfg |= ENCR_MODE_ECB << ENCR_MODE_SHIFT; + break; + case QCE_MODE_CBC: + cfg |= ENCR_MODE_CBC << ENCR_MODE_SHIFT; + break; + case QCE_MODE_CTR: + cfg |= ENCR_MODE_CTR << ENCR_MODE_SHIFT; + break; + case QCE_MODE_XTS: + cfg |= ENCR_MODE_XTS << ENCR_MODE_SHIFT; + break; + case QCE_MODE_CCM: + cfg |= ENCR_MODE_CCM << ENCR_MODE_SHIFT; + cfg |= LAST_CCM_XFR << LAST_CCM_SHIFT; + break; + default: + return ~0; + } + + return cfg; +} +#endif + +#ifdef CONFIG_CRYPTO_DEV_QCE_SKCIPHER +static void qce_xts_swapiv(__be32 *dst, const u8 *src, unsigned int ivsize) +{ + u8 swap[QCE_AES_IV_LENGTH]; + u32 i, j; + + if (ivsize > QCE_AES_IV_LENGTH) + return; + + memset(swap, 0, QCE_AES_IV_LENGTH); + + for (i = (QCE_AES_IV_LENGTH - ivsize), j = ivsize - 1; + i < QCE_AES_IV_LENGTH; i++, j--) + swap[i] = src[j]; + + qce_cpu_to_be32p_array(dst, swap, QCE_AES_IV_LENGTH); +} + +static void qce_xtskey(struct qce_device *qce, const u8 *enckey, + unsigned int enckeylen, unsigned int cryptlen) +{ + u32 xtskey[QCE_MAX_CIPHER_KEY_SIZE / sizeof(u32)] = {0}; + unsigned int xtsklen = enckeylen / (2 * sizeof(u32)); + + qce_cpu_to_be32p_array((__be32 *)xtskey, enckey + enckeylen / 2, + enckeylen / 2); + qce_write_array(qce, REG_ENCR_XTS_KEY0, xtskey, xtsklen); + + /* Set data unit size to cryptlen. Anything else causes + * crypto engine to return back incorrect results. + */ + qce_write(qce, REG_ENCR_XTS_DU_SIZE, cryptlen); +} + +static int qce_setup_regs_skcipher(struct crypto_async_request *async_req) +{ + struct skcipher_request *req = skcipher_request_cast(async_req); + struct qce_cipher_reqctx *rctx = skcipher_request_ctx(req); + struct qce_cipher_ctx *ctx = crypto_tfm_ctx(async_req->tfm); + struct qce_alg_template *tmpl = to_cipher_tmpl(crypto_skcipher_reqtfm(req)); + struct qce_device *qce = tmpl->qce; + __be32 enckey[QCE_MAX_CIPHER_KEY_SIZE / sizeof(__be32)] = {0}; + __be32 enciv[QCE_MAX_IV_SIZE / sizeof(__be32)] = {0}; + unsigned int enckey_words, enciv_words; + unsigned int keylen; + u32 encr_cfg = 0, auth_cfg = 0, config; + unsigned int ivsize = rctx->ivsize; + unsigned long flags = rctx->flags; + + qce_setup_config(qce); + + if (IS_XTS(flags)) + keylen = ctx->enc_keylen / 2; + else + keylen = ctx->enc_keylen; + + qce_cpu_to_be32p_array(enckey, ctx->enc_key, keylen); + enckey_words = keylen / sizeof(u32); + + qce_write(qce, REG_AUTH_SEG_CFG, auth_cfg); + + encr_cfg = qce_encr_cfg(flags, keylen); + + if (IS_DES(flags)) { + enciv_words = 2; + enckey_words = 2; + } else if (IS_3DES(flags)) { + enciv_words = 2; + enckey_words = 6; + } else if (IS_AES(flags)) { + if (IS_XTS(flags)) + qce_xtskey(qce, ctx->enc_key, ctx->enc_keylen, + rctx->cryptlen); + enciv_words = 4; + } else { + return -EINVAL; + } + + qce_write_array(qce, REG_ENCR_KEY0, (u32 *)enckey, enckey_words); + + if (!IS_ECB(flags)) { + if (IS_XTS(flags)) + qce_xts_swapiv(enciv, rctx->iv, ivsize); + else + qce_cpu_to_be32p_array(enciv, rctx->iv, ivsize); + + qce_write_array(qce, REG_CNTR0_IV0, (u32 *)enciv, enciv_words); + } + + if (IS_ENCRYPT(flags)) + encr_cfg |= BIT(ENCODE_SHIFT); + + qce_write(qce, REG_ENCR_SEG_CFG, encr_cfg); + qce_write(qce, REG_ENCR_SEG_SIZE, rctx->cryptlen); + qce_write(qce, REG_ENCR_SEG_START, 0); + + if (IS_CTR(flags)) { + qce_write(qce, REG_CNTR_MASK, ~0); + qce_write(qce, REG_CNTR_MASK0, ~0); + qce_write(qce, REG_CNTR_MASK1, ~0); + qce_write(qce, REG_CNTR_MASK2, ~0); + } + + qce_write(qce, REG_SEG_SIZE, rctx->cryptlen); + + /* get little endianness */ + config = qce_config_reg(qce, 1); + qce_write(qce, REG_CONFIG, config); + + qce_crypto_go(qce, true); + + return 0; +} +#endif + +#ifdef CONFIG_CRYPTO_DEV_QCE_AEAD +static const u32 std_iv_sha1[SHA256_DIGEST_SIZE / sizeof(u32)] = { + SHA1_H0, SHA1_H1, SHA1_H2, SHA1_H3, SHA1_H4, 0, 0, 0 +}; + +static const u32 std_iv_sha256[SHA256_DIGEST_SIZE / sizeof(u32)] = { + SHA256_H0, SHA256_H1, SHA256_H2, SHA256_H3, + SHA256_H4, SHA256_H5, SHA256_H6, SHA256_H7 +}; + +static unsigned int qce_be32_to_cpu_array(u32 *dst, const u8 *src, unsigned int len) +{ + u32 *d = dst; + const u8 *s = src; + unsigned int n; + + n = len / sizeof(u32); + for (; n > 0; n--) { + *d = be32_to_cpup((const __be32 *)s); + s += sizeof(u32); + d++; + } + return DIV_ROUND_UP(len, sizeof(u32)); +} + +static int qce_setup_regs_aead(struct crypto_async_request *async_req) +{ + struct aead_request *req = aead_request_cast(async_req); + struct qce_aead_reqctx *rctx = aead_request_ctx_dma(req); + struct qce_aead_ctx *ctx = crypto_tfm_ctx(async_req->tfm); + struct qce_alg_template *tmpl = to_aead_tmpl(crypto_aead_reqtfm(req)); + struct qce_device *qce = tmpl->qce; + u32 enckey[QCE_MAX_CIPHER_KEY_SIZE / sizeof(u32)] = {0}; + u32 enciv[QCE_MAX_IV_SIZE / sizeof(u32)] = {0}; + u32 authkey[QCE_SHA_HMAC_KEY_SIZE / sizeof(u32)] = {0}; + u32 authiv[SHA256_DIGEST_SIZE / sizeof(u32)] = {0}; + u32 authnonce[QCE_MAX_NONCE / sizeof(u32)] = {0}; + unsigned int enc_keylen = ctx->enc_keylen; + unsigned int auth_keylen = ctx->auth_keylen; + unsigned int enc_ivsize = rctx->ivsize; + unsigned int auth_ivsize = 0; + unsigned int enckey_words, enciv_words; + unsigned int authkey_words, authiv_words, authnonce_words; + unsigned long flags = rctx->flags; + u32 encr_cfg, auth_cfg, config, totallen; + u32 iv_last_word; + + qce_setup_config(qce); + + /* Write encryption key */ + enckey_words = qce_be32_to_cpu_array(enckey, ctx->enc_key, enc_keylen); + qce_write_array(qce, REG_ENCR_KEY0, enckey, enckey_words); + + /* Write encryption iv */ + enciv_words = qce_be32_to_cpu_array(enciv, rctx->iv, enc_ivsize); + qce_write_array(qce, REG_CNTR0_IV0, enciv, enciv_words); + + if (IS_CCM(rctx->flags)) { + iv_last_word = enciv[enciv_words - 1]; + qce_write(qce, REG_CNTR3_IV3, iv_last_word + 1); + qce_write_array(qce, REG_ENCR_CCM_INT_CNTR0, (u32 *)enciv, enciv_words); + qce_write(qce, REG_CNTR_MASK, ~0); + qce_write(qce, REG_CNTR_MASK0, ~0); + qce_write(qce, REG_CNTR_MASK1, ~0); + qce_write(qce, REG_CNTR_MASK2, ~0); + } + + /* Clear authentication IV and KEY registers of previous values */ + qce_clear_array(qce, REG_AUTH_IV0, 16); + qce_clear_array(qce, REG_AUTH_KEY0, 16); + + /* Clear byte count */ + qce_clear_array(qce, REG_AUTH_BYTECNT0, 4); + + /* Write authentication key */ + authkey_words = qce_be32_to_cpu_array(authkey, ctx->auth_key, auth_keylen); + qce_write_array(qce, REG_AUTH_KEY0, (u32 *)authkey, authkey_words); + + /* Write initial authentication IV only for HMAC algorithms */ + if (IS_SHA_HMAC(rctx->flags)) { + /* Write default authentication iv */ + if (IS_SHA1_HMAC(rctx->flags)) { + auth_ivsize = SHA1_DIGEST_SIZE; + memcpy(authiv, std_iv_sha1, auth_ivsize); + } else if (IS_SHA256_HMAC(rctx->flags)) { + auth_ivsize = SHA256_DIGEST_SIZE; + memcpy(authiv, std_iv_sha256, auth_ivsize); + } + authiv_words = auth_ivsize / sizeof(u32); + qce_write_array(qce, REG_AUTH_IV0, (u32 *)authiv, authiv_words); + } else if (IS_CCM(rctx->flags)) { + /* Write nonce for CCM algorithms */ + authnonce_words = qce_be32_to_cpu_array(authnonce, rctx->ccm_nonce, QCE_MAX_NONCE); + qce_write_array(qce, REG_AUTH_INFO_NONCE0, authnonce, authnonce_words); + } + + /* Set up ENCR_SEG_CFG */ + encr_cfg = qce_encr_cfg(flags, enc_keylen); + if (IS_ENCRYPT(flags)) + encr_cfg |= BIT(ENCODE_SHIFT); + qce_write(qce, REG_ENCR_SEG_CFG, encr_cfg); + + /* Set up AUTH_SEG_CFG */ + auth_cfg = qce_auth_cfg(rctx->flags, auth_keylen, ctx->authsize); + auth_cfg |= BIT(AUTH_LAST_SHIFT); + auth_cfg |= BIT(AUTH_FIRST_SHIFT); + if (IS_ENCRYPT(flags)) { + if (IS_CCM(rctx->flags)) + auth_cfg |= AUTH_POS_BEFORE << AUTH_POS_SHIFT; + else + auth_cfg |= AUTH_POS_AFTER << AUTH_POS_SHIFT; + } else { + if (IS_CCM(rctx->flags)) + auth_cfg |= AUTH_POS_AFTER << AUTH_POS_SHIFT; + else + auth_cfg |= AUTH_POS_BEFORE << AUTH_POS_SHIFT; + } + qce_write(qce, REG_AUTH_SEG_CFG, auth_cfg); + + totallen = rctx->cryptlen + rctx->assoclen; + + /* Set the encryption size and start offset */ + if (IS_CCM(rctx->flags) && IS_DECRYPT(rctx->flags)) + qce_write(qce, REG_ENCR_SEG_SIZE, rctx->cryptlen + ctx->authsize); + else + qce_write(qce, REG_ENCR_SEG_SIZE, rctx->cryptlen); + qce_write(qce, REG_ENCR_SEG_START, rctx->assoclen & 0xffff); + + /* Set the authentication size and start offset */ + qce_write(qce, REG_AUTH_SEG_SIZE, totallen); + qce_write(qce, REG_AUTH_SEG_START, 0); + + /* Write total length */ + if (IS_CCM(rctx->flags) && IS_DECRYPT(rctx->flags)) + qce_write(qce, REG_SEG_SIZE, totallen + ctx->authsize); + else + qce_write(qce, REG_SEG_SIZE, totallen); + + /* get little endianness */ + config = qce_config_reg(qce, 1); + qce_write(qce, REG_CONFIG, config); + + /* Start the process */ + qce_crypto_go(qce, !IS_CCM(flags)); + + return 0; +} +#endif + +int qce_start(struct crypto_async_request *async_req, u32 type) +{ + switch (type) { +#ifdef CONFIG_CRYPTO_DEV_QCE_SKCIPHER + case CRYPTO_ALG_TYPE_SKCIPHER: + return qce_setup_regs_skcipher(async_req); +#endif +#ifdef CONFIG_CRYPTO_DEV_QCE_SHA + case CRYPTO_ALG_TYPE_AHASH: + return qce_setup_regs_ahash(async_req); +#endif +#ifdef CONFIG_CRYPTO_DEV_QCE_AEAD + case CRYPTO_ALG_TYPE_AEAD: + return qce_setup_regs_aead(async_req); +#endif + default: + return -EINVAL; + } +} + +#define STATUS_ERRORS \ + (BIT(SW_ERR_SHIFT) | BIT(AXI_ERR_SHIFT) | BIT(HSD_ERR_SHIFT)) + +int qce_check_status(struct qce_device *qce, u32 *status) +{ + int ret = 0; + + *status = qce_read(qce, REG_STATUS); + + /* + * Don't use result dump status. The operation may not be complete. + * Instead, use the status we just read from device. In case, we need to + * use result_status from result dump the result_status needs to be byte + * swapped, since we set the device to little endian. + */ + if (*status & STATUS_ERRORS || !(*status & BIT(OPERATION_DONE_SHIFT))) + ret = -ENXIO; + else if (*status & BIT(MAC_FAILED_SHIFT)) + ret = -EBADMSG; + + return ret; +} + +void qce_get_version(struct qce_device *qce, u32 *major, u32 *minor, u32 *step) +{ + u32 val; + + val = qce_read(qce, REG_VERSION); + *major = (val & CORE_MAJOR_REV_MASK) >> CORE_MAJOR_REV_SHIFT; + *minor = (val & CORE_MINOR_REV_MASK) >> CORE_MINOR_REV_SHIFT; + *step = (val & CORE_STEP_REV_MASK) >> CORE_STEP_REV_SHIFT; +} -- cgit v1.2.3