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+ +static const int keysizes[2][7] = { + /* 1 2 4 8 16 32 64 */ + { 5, 8, 16, 24, 32, 0, 0 }, /* cipher key sizes*/ + { 8, 16, 20, 24, 32, 64, 128 }, /* hash key sizes*/ +}; + + +/* bits are 40, 64, 128, 192, 256, and top bit for hash */ +static const unsigned char template[] = { + [CRYPTO_MODE_NULL] = 0, + [CRYPTO_MODE_AES_ECB] = 28, /* AESECB 128/224/256 */ + [CRYPTO_MODE_AES_CBC] = 28, /* AESCBC 128/224/256 */ + [CRYPTO_MODE_AES_CTR] = 28, /* AESCTR 128/224/256 */ + [CRYPTO_MODE_AES_CCM] = 28, /* AESCCM 128/224/256 */ + [CRYPTO_MODE_AES_GCM] = 28, /* AESGCM 128/224/256 */ + [CRYPTO_MODE_AES_F8] = 28, /* AESF8 128/224/256 */ + [CRYPTO_MODE_AES_XTS] = 20, /* AESXTS 128/256 */ + [CRYPTO_MODE_AES_CFB] = 28, /* AESCFB 128/224/256 */ + [CRYPTO_MODE_AES_OFB] = 28, /* AESOFB 128/224/256 */ + [CRYPTO_MODE_AES_CS1] = 28, /* AESCS1 128/224/256 */ + [CRYPTO_MODE_AES_CS2] = 28, /* AESCS2 128/224/256 */ + [CRYPTO_MODE_AES_CS3] = 28, /* AESCS3 128/224/256 */ + [CRYPTO_MODE_MULTI2_ECB] = 0, /* MULTI2 */ + [CRYPTO_MODE_MULTI2_CBC] = 0, /* MULTI2 */ + [CRYPTO_MODE_MULTI2_OFB] = 0, /* MULTI2 */ + [CRYPTO_MODE_MULTI2_CFB] = 0, /* MULTI2 */ + [CRYPTO_MODE_3DES_CBC] = 8, /* 3DES CBC */ + [CRYPTO_MODE_3DES_ECB] = 8, /* 3DES ECB */ + [CRYPTO_MODE_DES_CBC] = 2, /* DES CBC */ + [CRYPTO_MODE_DES_ECB] = 2, /* DES ECB */ + [CRYPTO_MODE_KASUMI_ECB] = 4, /* KASUMI ECB */ + [CRYPTO_MODE_KASUMI_F8] = 4, /* KASUMI F8 */ + [CRYPTO_MODE_SNOW3G_UEA2] = 4, /* SNOW3G */ + [CRYPTO_MODE_ZUC_UEA3] = 4, /* ZUC */ + [CRYPTO_MODE_CHACHA20_STREAM] = 16, /* CHACHA20 */ + [CRYPTO_MODE_CHACHA20_POLY1305] = 16, /* CHACHA20 */ + [CRYPTO_MODE_SM4_ECB] = 4, /* SM4ECB 128 */ + [CRYPTO_MODE_SM4_CBC] = 4, /* SM4CBC 128 */ + [CRYPTO_MODE_SM4_CFB] = 4, /* SM4CFB 128 */ + [CRYPTO_MODE_SM4_OFB] = 4, /* SM4OFB 128 */ + [CRYPTO_MODE_SM4_CTR] = 4, /* SM4CTR 128 */ + [CRYPTO_MODE_SM4_CCM] = 4, /* SM4CCM 128 */ + [CRYPTO_MODE_SM4_GCM] = 4, /* SM4GCM 128 */ + [CRYPTO_MODE_SM4_F8] = 4, /* SM4F8 128 */ + [CRYPTO_MODE_SM4_XTS] = 4, /* SM4XTS 128 */ + [CRYPTO_MODE_SM4_CS1] = 4, /* SM4CS1 128 */ + [CRYPTO_MODE_SM4_CS2] = 4, /* SM4CS2 128 */ + [CRYPTO_MODE_SM4_CS3] = 4, /* SM4CS3 128 */ + + [CRYPTO_MODE_HASH_MD5] = 242, + [CRYPTO_MODE_HMAC_MD5] = 242, + [CRYPTO_MODE_HASH_SHA1] = 242, + [CRYPTO_MODE_HMAC_SHA1] = 242, + [CRYPTO_MODE_HASH_SHA224] = 242, + [CRYPTO_MODE_HMAC_SHA224] = 242, + [CRYPTO_MODE_HASH_SHA256] = 242, + [CRYPTO_MODE_HMAC_SHA256] = 242, + [CRYPTO_MODE_HASH_SHA384] = 242, + [CRYPTO_MODE_HMAC_SHA384] = 242, + [CRYPTO_MODE_HASH_SHA512] = 242, + [CRYPTO_MODE_HMAC_SHA512] = 242, + [CRYPTO_MODE_HASH_SHA512_224] = 242, + [CRYPTO_MODE_HMAC_SHA512_224] = 242, + [CRYPTO_MODE_HASH_SHA512_256] = 242, + [CRYPTO_MODE_HMAC_SHA512_256] = 242, + [CRYPTO_MODE_MAC_XCBC] = 154, /* XaCBC */ + [CRYPTO_MODE_MAC_CMAC] = 154, /* CMAC */ + [CRYPTO_MODE_MAC_KASUMI_F9] = 130, /* KASUMI */ + [CRYPTO_MODE_MAC_SNOW3G_UIA2] = 130, /* SNOW */ + [CRYPTO_MODE_MAC_ZUC_UIA3] = 130, /* ZUC */ + [CRYPTO_MODE_MAC_POLY1305] = 144, + [CRYPTO_MODE_SSLMAC_MD5] = 130, + [CRYPTO_MODE_SSLMAC_SHA1] = 132, + [CRYPTO_MODE_HASH_CRC32] = 0, + [CRYPTO_MODE_MAC_MICHAEL] = 129, + + [CRYPTO_MODE_HASH_SHA3_224] = 242, + [CRYPTO_MODE_HASH_SHA3_256] = 242, + [CRYPTO_MODE_HASH_SHA3_384] = 242, + [CRYPTO_MODE_HASH_SHA3_512] = 242, + [CRYPTO_MODE_HASH_SHAKE128] = 242, + [CRYPTO_MODE_HASH_SHAKE256] = 242, + [CRYPTO_MODE_HASH_CSHAKE128] = 130, + [CRYPTO_MODE_HASH_CSHAKE256] = 130, + [CRYPTO_MODE_MAC_KMAC128] = 242, + [CRYPTO_MODE_MAC_KMAC256] = 242, + [CRYPTO_MODE_MAC_KMACXOF128] = 242, + [CRYPTO_MODE_MAC_KMACXOF256] = 242, + [CRYPTO_MODE_HASH_SM3] = 242, + [CRYPTO_MODE_HMAC_SM3] = 242, + [CRYPTO_MODE_MAC_SM4_XCBC] = 242, + [CRYPTO_MODE_MAC_SM4_CMAC] = 242, +}; + +/* + * This hack implements SG chaining in a way that works around some + * limitations of Linux -- the generic sg_chain function fails on ARM, and + * the scatterwalk_sg_chain function creates chains that cannot be DMA mapped + * on x86. So this one is halfway inbetween, and hopefully works in both + * environments. + * + * Unfortunately, if SG debugging is enabled the scatterwalk code will bail + * on these chains, but it will otherwise work properly. + */ +static inline void spacc_sg_chain(struct scatterlist *sg1, int num, + struct scatterlist *sg2) +{ + BUILD_BUG_ON(IS_ENABLED(CONFIG_DEBUG_SG)); + sg_chain(sg1, num, sg2); + sg1[num - 1].page_link |= 1; +} + +/* Prepare the SG for DMA mapping. Returns the number of SG entries. */ +static int fixup_sg(struct scatterlist *sg, int nbytes) +{ + int sg_nents = 0; + + while (nbytes > 0) { + if (sg && sg->length) { + ++sg_nents; + + if (sg->length > nbytes) + return sg_nents; + + nbytes -= sg->length; + + sg = sg_next(sg); + if (!sg) + break; + /* WARNING: sg->length may be > nbytes */ + } else { + /* + * The Linux crypto system uses its own SG chaining + * method which is slightly incompatible with the + * generic SG chaining. In particular, dma_map_sg does + * not support this method. Turn them into proper + * chained SGs here (which dma_map_sg does + * support) as a workaround. + */ + spacc_sg_chain(sg, 1, sg_chain_ptr(sg)); + sg = sg_chain_ptr(sg); + if (!sg) + break; + } + } + + return sg_nents; +} + +int spacc_sgs_to_ddt(struct device *dev, + struct scatterlist *sg1, int len1, int *ents1, + struct scatterlist *sg2, int len2, int *ents2, + struct scatterlist *sg3, int len3, int *ents3, + struct pdu_ddt *ddt, int dma_direction) +{ + unsigned int foo_len[3]; + int i, j, k, rc, *vents[3]; + int nents[3], onents[3], tents; + struct scatterlist *sg_entry, *foo_sg[3]; + + foo_sg[0] = sg1; foo_len[0] = len1; vents[0] = ents1; + foo_sg[1] = sg2; foo_len[1] = len2; vents[1] = ents2; + foo_sg[2] = sg3; foo_len[2] = len3; vents[2] = ents3; + + /* map them all*/ + tents = 0; + for (j = 0; j < 3; j++) { + if (foo_sg[j]) { + onents[j] = fixup_sg(foo_sg[j], foo_len[j]); + *vents[j] = nents[j] = dma_map_sg(dev, foo_sg[j], + onents[j], + dma_direction); + tents += nents[j]; + if (nents[j] <= 0) { + for (k = 0; k < j; k++) { + if (foo_sg[k]) + dma_unmap_sg(dev, foo_sg[k], + nents[k], + dma_direction); + } + return -ENOMEM; + } + } + } + + /* require ATOMIC operations */ + rc = pdu_ddt_init(ddt, tents | 0x80000000); + if (rc < 0) { + for (k = 0; k < 3; k++) { + if (foo_sg[k]) + dma_unmap_sg(dev, foo_sg[k], + nents[k], dma_direction); + } + return -EIO; + } + + for (j = 0; j < 3; j++) { + if (foo_sg[j]) { + for_each_sg(foo_sg[j], sg_entry, nents[j], i) { + pdu_ddt_add(ddt, sg_dma_address(sg_entry), + min(foo_len[j], sg_dma_len(sg_entry))); + foo_len[j] -= sg_dma_len(sg_entry); + } + dma_sync_sg_for_device(dev, foo_sg[j], nents[j], + dma_direction); + } + } + + return tents; +} + +int spacc_sg_to_ddt(struct device *dev, struct scatterlist *sg, + int nbytes, struct pdu_ddt *ddt, int dma_direction) +{ + struct scatterlist *sg_entry; + int nents, orig_nents; + int i, rc; + + orig_nents = fixup_sg(sg, nbytes); + nents = dma_map_sg(dev, sg, orig_nents, dma_direction); + + if (nents <= 0) + return -ENOMEM; + + /* require ATOMIC operations */ + rc = pdu_ddt_init(ddt, nents | 0x80000000); + if (rc < 0) { + dma_unmap_sg(dev, sg, orig_nents, dma_direction); + return -EIO; + } + + for_each_sg(sg, sg_entry, nents, i) { + pdu_ddt_add(ddt, sg_dma_address(sg_entry), + sg_dma_len(sg_entry)); + } + + dma_sync_sg_for_device(dev, sg, nents, dma_direction); + + return orig_nents; +} + +int spacc_set_operation(struct spacc_device *spacc, int handle, int op, + u32 prot, uint32_t icvcmd, uint32_t icvoff, + uint32_t icvsz, uint32_t sec_key) +{ + int ret = CRYPTO_OK; + struct spacc_job *job = NULL; + + if (handle < 0 || handle > SPACC_MAX_JOBS) + return -ENXIO; + + job = &spacc->job[handle]; + if (!job) + return -EIO; + + job->op = op; + if (op == OP_ENCRYPT) + job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_ENCRYPT); + else + job->ctrl &= ~SPACC_CTRL_MASK(SPACC_CTRL_ENCRYPT); + + switch (prot) { + case ICV_HASH: /* HASH of plaintext */ + job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_ICV_PT); + break; + case ICV_HASH_ENCRYPT: + /* HASH the plaintext and encrypt the lot */ + /* ICV_PT and ICV_APPEND must be set too */ + job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_ICV_ENC); + job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_ICV_PT); + /* This mode is not valid when BIT_ALIGN != 0 */ + job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_ICV_APPEND); + break; + case ICV_ENCRYPT_HASH: /* HASH the ciphertext */ + job->ctrl &= ~SPACC_CTRL_MASK(SPACC_CTRL_ICV_PT); + job->ctrl &= ~SPACC_CTRL_MASK(SPACC_CTRL_ICV_ENC); + break; + case ICV_IGNORE: + break; + default: + ret = -EINVAL; + } + + job->icv_len = icvsz; + + switch (icvcmd) { + case IP_ICV_OFFSET: + job->icv_offset = icvoff; + job->ctrl &= ~SPACC_CTRL_MASK(SPACC_CTRL_ICV_APPEND); + break; + case IP_ICV_APPEND: + job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_ICV_APPEND); + break; + case IP_ICV_IGNORE: + break; + default: + ret = -EINVAL; + } + + if (sec_key) + job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_SEC_KEY); + + return ret; +} + +static int _spacc_fifo_full(struct spacc_device *spacc, uint32_t prio) +{ + if (spacc->config.is_qos) + return readl(spacc->regmap + SPACC_REG_FIFO_STAT) & + SPACC_FIFO_STAT_CMDX_FULL(prio); + else + return readl(spacc->regmap + SPACC_REG_FIFO_STAT) & + SPACC_FIFO_STAT_CMD0_FULL; +} + +/* When proc_sz != 0 it overrides the ddt_len value + * defined in the context referenced by 'job_idx' + */ +int spacc_packet_enqueue_ddt_ex(struct spacc_device *spacc, int use_jb, + int job_idx, struct pdu_ddt *src_ddt, + struct pdu_ddt *dst_ddt, u32 proc_sz, + uint32_t aad_offset, uint32_t pre_aad_sz, + u32 post_aad_sz, uint32_t iv_offset, + uint32_t prio) +{ + int i; + struct spacc_job *job; + int ret = CRYPTO_OK, proc_len; + + if (job_idx < 0 || job_idx > SPACC_MAX_JOBS) + return -ENXIO; + + switch (prio) { + case SPACC_SW_CTRL_PRIO_MED: + if (spacc->config.cmd1_fifo_depth == 0) + return -EINVAL; + break; + case SPACC_SW_CTRL_PRIO_LOW: + if (spacc->config.cmd2_fifo_depth == 0) + return -EINVAL; + break; + } + + job = &spacc->job[job_idx]; + if (!job) + return -EIO; + + /* process any jobs in the jb*/ + if (use_jb && spacc_process_jb(spacc) != 0) + goto fifo_full; + + if (_spacc_fifo_full(spacc, prio)) { + if (use_jb) + goto fifo_full; + else + return -EBUSY; + } + + /* compute the length we must process, in decrypt mode + * with an ICV (hash, hmac or CCM modes) + * we must subtract the icv length from the buffer size + */ + if (proc_sz == SPACC_AUTO_SIZE) { + proc_len = src_ddt->len; + + if (job->op == OP_DECRYPT && + (job->hash_mode > 0 || + job->enc_mode == CRYPTO_MODE_AES_CCM || + job->enc_mode == CRYPTO_MODE_AES_GCM) && + !(job->ctrl & SPACC_CTRL_MASK(SPACC_CTRL_ICV_ENC))) + proc_len = src_ddt->len - job->icv_len; + } else { + proc_len = proc_sz; + } + + if (pre_aad_sz & SPACC_AADCOPY_FLAG) { + job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_AAD_COPY); + pre_aad_sz &= ~(SPACC_AADCOPY_FLAG); + } else { + job->ctrl &= ~SPACC_CTRL_MASK(SPACC_CTRL_AAD_COPY); + } + + job->pre_aad_sz = pre_aad_sz; + job->post_aad_sz = post_aad_sz; + + if (spacc->config.dma_type == SPACC_DMA_DDT) { + pdu_io_cached_write(spacc->regmap + SPACC_REG_SRC_PTR, + (uint32_t)src_ddt->phys, + &spacc->cache.src_ptr); + pdu_io_cached_write(spacc->regmap + SPACC_REG_DST_PTR, + (uint32_t)dst_ddt->phys, + &spacc->cache.dst_ptr); + } else if (spacc->config.dma_type == SPACC_DMA_LINEAR) { + pdu_io_cached_write(spacc->regmap + SPACC_REG_SRC_PTR, + (uint32_t)src_ddt->virt[0], + &spacc->cache.src_ptr); + pdu_io_cached_write(spacc->regmap + SPACC_REG_DST_PTR, + (uint32_t)dst_ddt->virt[0], + &spacc->cache.dst_ptr); + } else { + return -EIO; + } + + pdu_io_cached_write(spacc->regmap + SPACC_REG_PROC_LEN, + proc_len - job->post_aad_sz, + &spacc->cache.proc_len); + pdu_io_cached_write(spacc->regmap + SPACC_REG_ICV_LEN, + job->icv_len, &spacc->cache.icv_len); + pdu_io_cached_write(spacc->regmap + SPACC_REG_ICV_OFFSET, + job->icv_offset, &spacc->cache.icv_offset); + pdu_io_cached_write(spacc->regmap + SPACC_REG_PRE_AAD_LEN, + job->pre_aad_sz, &spacc->cache.pre_aad); + pdu_io_cached_write(spacc->regmap + SPACC_REG_POST_AAD_LEN, + job->post_aad_sz, &spacc->cache.post_aad); + pdu_io_cached_write(spacc->regmap + SPACC_REG_IV_OFFSET, + iv_offset, &spacc->cache.iv_offset); + pdu_io_cached_write(spacc->regmap + SPACC_REG_OFFSET, + aad_offset, &spacc->cache.offset); + pdu_io_cached_write(spacc->regmap + SPACC_REG_AUX_INFO, + AUX_DIR(job->auxinfo_dir) | + AUX_BIT_ALIGN(job->auxinfo_bit_align) | + AUX_CBC_CS(job->auxinfo_cs_mode), + &spacc->cache.aux); + + if (job->first_use == 1) { + writel(job->ckey_sz | SPACC_SET_KEY_CTX(job->ctx_idx), + spacc->regmap + SPACC_REG_KEY_SZ); + writel(job->hkey_sz | SPACC_SET_KEY_CTX(job->ctx_idx), + spacc->regmap + SPACC_REG_KEY_SZ); + } + + job->job_swid = spacc->job_next_swid; + spacc->job_lookup[job->job_swid] = job_idx; + spacc->job_next_swid = + (spacc->job_next_swid + 1) % SPACC_MAX_JOBS; + writel(SPACC_SW_CTRL_ID_SET(job->job_swid) | + SPACC_SW_CTRL_PRIO_SET(prio), + spacc->regmap + SPACC_REG_SW_CTRL); + writel(job->ctrl, spacc->regmap + SPACC_REG_CTRL); + + /* Clear an expansion key after the first call*/ + if (job->first_use == 1) { + job->first_use = 0; + job->ctrl &= ~SPACC_CTRL_MASK(SPACC_CTRL_KEY_EXP); + } + + return ret; + +fifo_full: + /* try to add a job to the job buffers*/ + i = spacc->jb_head + 1; + if (i == SPACC_MAX_JOB_BUFFERS) + i = 0; + + if (i == spacc->jb_tail) + return -EBUSY; + + spacc->job_buffer[spacc->jb_head] = (struct spacc_job_buffer) { + .active = 1, + .job_idx = job_idx, + .src = src_ddt, + .dst = dst_ddt, + .proc_sz = proc_sz, + .aad_offset = aad_offset, + .pre_aad_sz = pre_aad_sz, + .post_aad_sz = post_aad_sz, + .iv_offset = iv_offset, + .prio = prio + }; + + spacc->jb_head = i; + + return CRYPTO_USED_JB; +} + +int spacc_packet_enqueue_ddt(struct spacc_device *spacc, int job_idx, + struct pdu_ddt *src_ddt, struct pdu_ddt *dst_ddt, + u32 proc_sz, u32 aad_offset, uint32_t pre_aad_sz, + uint32_t post_aad_sz, u32 iv_offset, uint32_t prio) +{ + int ret; + unsigned long lock_flags; + + spin_lock_irqsave(&spacc->lock, lock_flags); + ret = spacc_packet_enqueue_ddt_ex(spacc, 1, job_idx, src_ddt, + dst_ddt, proc_sz, aad_offset, + pre_aad_sz, post_aad_sz, + iv_offset, prio); + spin_unlock_irqrestore(&spacc->lock, lock_flags); + + return ret; +} + +static int spacc_packet_dequeue(struct spacc_device *spacc, int job_idx) +{ + int ret = CRYPTO_OK; + struct spacc_job *job = &spacc->job[job_idx]; + unsigned long lock_flag; + + spin_lock_irqsave(&spacc->lock, lock_flag); + + if (!job && !(job_idx == SPACC_JOB_IDX_UNUSED)) { + ret = -EIO; + } else if (job->job_done) { + job->job_done = 0; + ret = job->job_err; + } else { + ret = -EINPROGRESS; + } + + spin_unlock_irqrestore(&spacc->lock, lock_flag); + + return ret; +} + +int spacc_isenabled(struct spacc_device *spacc, int mode, int keysize) +{ + int x; + + if (mode < 0 || mode > CRYPTO_MODE_LAST) + return 0; + + if (mode == CRYPTO_MODE_NULL || + mode == CRYPTO_MODE_AES_XTS || + mode == CRYPTO_MODE_SM4_XTS || + mode == CRYPTO_MODE_AES_F8 || + mode == CRYPTO_MODE_SM4_F8 || + spacc->config.modes[mode] & 128) + return 1; + + for (x = 0; x < 6; x++) { + if (keysizes[0][x] == keysize) { + if (spacc->config.modes[mode] & (1 << x)) + return 1; + else + return 0; + } + } + + return 0; +} + +/* Releases a crypto context back into appropriate module's pool*/ +int spacc_close(struct spacc_device *dev, int handle) +{ + return spacc_job_release(dev, handle); +} + +static void spacc_static_modes(struct spacc_device *spacc, int x, int y) +{ + /* Disable the algos that as not supported here */ + switch (x) { + case CRYPTO_MODE_AES_F8: + case CRYPTO_MODE_AES_CFB: + case CRYPTO_MODE_AES_OFB: + case CRYPTO_MODE_MULTI2_ECB: + case CRYPTO_MODE_MULTI2_CBC: + case CRYPTO_MODE_MULTI2_CFB: + case CRYPTO_MODE_MULTI2_OFB: + case CRYPTO_MODE_MAC_POLY1305: + case CRYPTO_MODE_HASH_CRC32: + /* Disable the modes */ + spacc->config.modes[x] &= ~(1 << y); + break; + default: + break;/* Algos are enabled */ + } +} + +int spacc_static_config(struct spacc_device *spacc) +{ + + int x, y; + + for (x = 0; x < ARRAY_SIZE(template); x++) { + spacc->config.modes[x] = template[x]; + + for (y = 0; y < (ARRAY_SIZE(keysizes[0])); y++) { + /* List static modes */ + spacc_static_modes(spacc, x, y); + } + } + + return 0; +} + +int spacc_clone_handle(struct spacc_device *spacc, int old_handle, + void *cbdata) +{ + int new_handle; + + new_handle = spacc_job_request(spacc, spacc->job[old_handle].ctx_idx); + if (new_handle < 0) + return new_handle; + + spacc->job[new_handle] = spacc->job[old_handle]; + spacc->job[new_handle].job_used = new_handle; + spacc->job[new_handle].cbdata = cbdata; + + return new_handle; +} + +/* Allocates a job for spacc module context and initialize + * it with an appropriate type. + */ +int spacc_open(struct spacc_device *spacc, int enc, int hash, int ctxid, + int secure_mode, spacc_callback cb, void *cbdata) +{ + u32 ctrl = 0; + int job_idx = 0; + int ret = CRYPTO_OK; + struct spacc_job *job = NULL; + + job_idx = spacc_job_request(spacc, ctxid); + if (job_idx < 0) + return -EIO; + + job = &spacc->job[job_idx]; + + if (secure_mode && job->ctx_idx > spacc->config.num_sec_ctx) { + pr_debug("ERR: For secure contexts"); + pr_debug("ERR: Job ctx ID is outside allowed range\n"); + spacc_job_release(spacc, job_idx); + return -EIO; + } + + job->auxinfo_cs_mode = 0; + job->auxinfo_bit_align = 0; + job->auxinfo_dir = 0; + job->icv_len = 0; + + switch (enc) { + case CRYPTO_MODE_NULL: + break; + case CRYPTO_MODE_AES_ECB: + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_AES); + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_ECB); + break; + case CRYPTO_MODE_AES_CBC: + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_AES); + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_CBC); + break; + case CRYPTO_MODE_AES_CS3: + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_AES); + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_CBC); + job->auxinfo_cs_mode = 3; + break; + case CRYPTO_MODE_AES_CTR: + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_AES); + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_CTR); + break; + case CRYPTO_MODE_AES_XTS: + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_AES); + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_XTS); + break; + case CRYPTO_MODE_3DES_CBC: + case CRYPTO_MODE_DES_CBC: + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_DES); + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_CBC); + break; + case CRYPTO_MODE_3DES_ECB: + case CRYPTO_MODE_DES_ECB: + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_DES); + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_ECB); + break; + case CRYPTO_MODE_CHACHA20_STREAM: + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_CHACHA20); + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_CHACHA_STREAM); + break; + case CRYPTO_MODE_SM4_ECB: + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_SM4); + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_ECB); + break; + case CRYPTO_MODE_SM4_CBC: + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_SM4); + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_CBC); + break; + case CRYPTO_MODE_SM4_CS3: + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_SM4); + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_CBC); + job->auxinfo_cs_mode = 3; + break; + case CRYPTO_MODE_SM4_CTR: + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_SM4); + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_CTR); + break; + case CRYPTO_MODE_SM4_XTS: + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_ALG, C_SM4); + ctrl |= SPACC_CTRL_SET(SPACC_CTRL_CIPH_MODE, CM_XTS); + break; + default: + ret = -EOPNOTSUPP; + } + + ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_MSG_BEGIN) | + SPACC_CTRL_MASK(SPACC_CTRL_MSG_END); + + if (ret != CRYPTO_OK) { + spacc_job_release(spacc, job_idx); + } else { + ret = job_idx; + job->first_use = 1; + job->enc_mode = enc; + job->hash_mode = hash; + job->ckey_sz = 0; + job->hkey_sz = 0; + job->job_done = 0; + job->job_swid = 0; + job->job_secure = !!secure_mode; + + job->auxinfo_bit_align = 0; + job->job_err = -EINPROGRESS; + job->ctrl = ctrl | + SPACC_CTRL_SET(SPACC_CTRL_CTX_IDX, + job->ctx_idx); + job->cb = cb; + job->cbdata = cbdata; + } + + return ret; +} + +static int spacc_xof_stringsize_autodetect(struct spacc_device *spacc) +{ + void *virt; + dma_addr_t dma; + struct pdu_ddt ddt; + int ss, alg, i, stat; + unsigned long spacc_ctrl[2] = {0xF400B400, 0xF400D400}; + unsigned char buf[256]; + unsigned long buflen, rbuf; + unsigned char test_str[6] = {0x01, 0x20, 0x54, 0x45, 0x53, 0x54}; + unsigned char md[2][16] = { + {0xc3, 0x6d, 0x0a, 0x88, 0xfa, 0x37, 0x4c, 0x9b, + 0x44, 0x74, 0xeb, 0x00, 0x5f, 0xe8, 0xca, 0x25}, + {0x68, 0x77, 0x04, 0x11, 0xf8, 0xe3, 0xb0, 0x1e, + 0x0d, 0xbf, 0x71, 0x6a, 0xe9, 0x87, 0x1a, 0x0d}}; + + virt = dma_alloc_coherent(get_ddt_device(), 256, &dma, GFP_KERNEL); + if (!virt) + return -EIO; + + if (pdu_ddt_init(&ddt, 1)) { + dma_free_coherent(get_ddt_device(), 256, virt, dma); + return -EIO; + } + pdu_ddt_add(&ddt, dma, 256); + + /* populate registers for jobs*/ + writel((uint32_t)ddt.phys, spacc->regmap + SPACC_REG_SRC_PTR); + writel((uint32_t)ddt.phys, spacc->regmap + SPACC_REG_DST_PTR); + + writel(16, spacc->regmap + SPACC_REG_PROC_LEN); + writel(16, spacc->regmap + SPACC_REG_PRE_AAD_LEN); + writel(16, spacc->regmap + SPACC_REG_ICV_LEN); + writel(6, spacc->regmap + SPACC_REG_KEY_SZ); + writel(0, spacc->regmap + SPACC_REG_SW_CTRL); + + /* repeat for 2 algorithms, CSHAKE128 and KMAC128*/ + for (alg = 0; (alg < 2) && (spacc->config.string_size == 0); alg++) { + /* repeat for 4 string_size sizes*/ + for (ss = 0; ss < 4; ss++) { + buflen = (32UL << ss); + if (buflen > spacc->config.hash_page_size) + break; + + /* clear I/O memory*/ + memset(virt, 0, 256); + + /* clear buf and then insert test string*/ + memset(buf, 0, sizeof(buf)); + memcpy(buf, test_str, sizeof(test_str)); + memcpy(buf + (buflen >> 1), test_str, sizeof(test_str)); + + /* write key context */ + pdu_to_dev_s(spacc->regmap + SPACC_CTX_HASH_KEY, + buf, + spacc->config.hash_page_size >> 2, + spacc->config.spacc_endian); + + /* write ctrl register */ + writel(spacc_ctrl[alg], spacc->regmap + SPACC_REG_CTRL); + + /* wait for job to complete */ + for (i = 0; i < 20; i++) { + rbuf = 0; + rbuf = readl(spacc->regmap + + SPACC_REG_FIFO_STAT) & + SPACC_FIFO_STAT_STAT_EMPTY; + if (!rbuf) { + /* check result, if it matches, + * we have string_size + */ + writel(1, spacc->regmap + + SPACC_REG_STAT_POP); + rbuf = 0; + rbuf = readl(spacc->regmap + + SPACC_REG_STATUS); + stat = SPACC_GET_STATUS_RET_CODE(rbuf); + if ((!memcmp(virt, md[alg], 16)) && + stat == SPACC_OK) { + spacc->config.string_size = + (16 << ss); + } + break; + } + } + } + } + + /* reset registers */ + writel(0, spacc->regmap + SPACC_REG_IRQ_CTRL); + writel(0, spacc->regmap + SPACC_REG_IRQ_EN); + writel(0xFFFFFFFF, spacc->regmap + SPACC_REG_IRQ_STAT); + + writel(0, spacc->regmap + SPACC_REG_SRC_PTR); + writel(0, spacc->regmap + SPACC_REG_DST_PTR); + writel(0, spacc->regmap + SPACC_REG_PROC_LEN); + writel(0, spacc->regmap + SPACC_REG_ICV_LEN); + writel(0, spacc->regmap + SPACC_REG_PRE_AAD_LEN); + + pdu_ddt_free(&ddt); + dma_free_coherent(get_ddt_device(), 256, virt, dma); + + return CRYPTO_OK; +} + +/* free up the memory */ +void spacc_fini(struct spacc_device *spacc) +{ + vfree(spacc->ctx); + vfree(spacc->job); +} + +int spacc_init(void __iomem *baseaddr, struct spacc_device *spacc, + struct pdu_info *info) +{ + unsigned long id; + char version_string[3][16] = { "SPACC", "SPACC-PDU" }; + char idx_string[2][16] = { "(Normal Port)", "(Secure Port)" }; + char dma_type_string[4][16] = { "Unknown", "Scattergather", "Linear", + "Unknown" }; + + if (!baseaddr) { + pr_debug("ERR: baseaddr is NULL\n"); + return -1; + } + if (!spacc) { + pr_debug("ERR: spacc is NULL\n"); + return -1; + } + + memset(spacc, 0, sizeof(*spacc)); + spin_lock_init(&spacc->lock); + spin_lock_init(&spacc->ctx_lock); + + /* assign the baseaddr*/ + spacc->regmap = baseaddr; + + /* version info*/ + spacc->config.version = info->spacc_version.version; + spacc->config.pdu_version = (info->pdu_config.major << 4) | + info->pdu_config.minor; + spacc->config.project = info->spacc_version.project; + spacc->config.is_pdu = info->spacc_version.is_pdu; + spacc->config.is_qos = info->spacc_version.qos; + + /* misc*/ + spacc->config.is_partial = info->spacc_version.partial; + spacc->config.num_ctx = info->spacc_config.num_ctx; + spacc->config.ciph_page_size = 1U << + info->spacc_config.ciph_ctx_page_size; + + spacc->config.hash_page_size = 1U << + info->spacc_config.hash_ctx_page_size; + + spacc->config.dma_type = info->spacc_config.dma_type; + spacc->config.idx = info->spacc_version.vspacc_idx; + spacc->config.cmd0_fifo_depth = info->spacc_config.cmd0_fifo_depth; + spacc->config.cmd1_fifo_depth = info->spacc_config.cmd1_fifo_depth; + spacc->config.cmd2_fifo_depth = info->spacc_config.cmd2_fifo_depth; + spacc->config.stat_fifo_depth = info->spacc_config.stat_fifo_depth; + spacc->config.fifo_cnt = 1; + spacc->config.is_ivimport = info->spacc_version.ivimport; + + /* ctrl register map*/ + if (spacc->config.version <= 0x4E) + spacc->config.ctrl_map = spacc_ctrl_map[SPACC_CTRL_VER_0]; + else if (spacc->config.version <= 0x60) + spacc->config.ctrl_map = spacc_ctrl_map[SPACC_CTRL_VER_1]; + else + spacc->config.ctrl_map = spacc_ctrl_map[SPACC_CTRL_VER_2]; + + spacc->job_next_swid = 0; + spacc->wdcnt = 0; + spacc->config.wd_timer = SPACC_WD_TIMER_INIT; + + /* version 4.10 uses IRQ, + * above uses WD and we don't support below 4.00 + */ + if (spacc->config.version < 0x40) { + pr_debug("ERR: Unsupported SPAcc version\n"); + return -EIO; + } else if (spacc->config.version < 0x4B) { + spacc->op_mode = SPACC_OP_MODE_IRQ; + } else { + spacc->op_mode = SPACC_OP_MODE_WD; + } + + /* set threshold and enable irq + * on 4.11 and newer cores we can derive this + * from the HW reported depths. + */ + if (spacc->config.stat_fifo_depth == 1) + spacc->config.ideal_stat_level = 1; + else if (spacc->config.stat_fifo_depth <= 4) + spacc->config.ideal_stat_level = + spacc->config.stat_fifo_depth - 1; + else if (spacc->config.stat_fifo_depth <= 8) + spacc->config.ideal_stat_level = + spacc->config.stat_fifo_depth - 2; + else + spacc->config.ideal_stat_level = + spacc->config.stat_fifo_depth - 4; + + /* determine max PROClen value */ + writel(0xFFFFFFFF, spacc->regmap + SPACC_REG_PROC_LEN); + spacc->config.max_msg_size = readl(spacc->regmap + SPACC_REG_PROC_LEN); + + /* read config info*/ + if (spacc->config.is_pdu) { + pr_debug("PDU:\n"); + pr_debug(" MAJOR : %u\n", info->pdu_config.major); + pr_debug(" MINOR : %u\n", info->pdu_config.minor); + } + + id = readl(spacc->regmap + SPACC_REG_ID); + pr_debug("SPACC ID: (%08lx)\n", (unsigned long)id); + pr_debug(" MAJOR : %x\n", info->spacc_version.major); + pr_debug(" MINOR : %x\n", info->spacc_version.minor); + pr_debug(" QOS : %x\n", info->spacc_version.qos); + pr_debug(" IVIMPORT : %x\n", spacc->config.is_ivimport); + + if (spacc->config.version >= 0x48) + pr_debug(" TYPE : %lx (%s)\n", SPACC_ID_TYPE(id), + version_string[SPACC_ID_TYPE(id) & 3]); + + pr_debug(" AUX : %x\n", info->spacc_version.qos); + pr_debug(" IDX : %lx %s\n", SPACC_ID_VIDX(id), + spacc->config.is_secure ? + (idx_string[spacc->config.is_secure_port & 1]) : ""); + pr_debug(" PARTIAL : %x\n", info->spacc_version.partial); + pr_debug(" PROJECT : %x\n", info->spacc_version.project); + + if (spacc->config.version >= 0x48) + id = readl(spacc->regmap + SPACC_REG_CONFIG); + else + id = 0xFFFFFFFF; + + pr_debug("SPACC CFG: (%08lx)\n", id); + pr_debug(" CTX CNT : %u\n", info->spacc_config.num_ctx); + pr_debug(" VSPACC CNT : %u\n", info->spacc_config.num_vspacc); + pr_debug(" CIPH SZ : %-3lu bytes\n", 1UL << + info->spacc_config.ciph_ctx_page_size); + pr_debug(" HASH SZ : %-3lu bytes\n", 1UL << + info->spacc_config.hash_ctx_page_size); + pr_debug(" DMA TYPE : %u (%s)\n", info->spacc_config.dma_type, + dma_type_string[info->spacc_config.dma_type & 3]); + pr_debug(" MAX PROCLEN: %lu bytes\n", (unsigned long) + spacc->config.max_msg_size); + pr_debug(" FIFO CONFIG :\n"); + pr_debug(" CMD0 DEPTH: %d\n", spacc->config.cmd0_fifo_depth); + + if (spacc->config.is_qos) { + pr_debug(" CMD1 DEPTH: %d\n", + spacc->config.cmd1_fifo_depth); + pr_debug(" CMD2 DEPTH: %d\n", + spacc->config.cmd2_fifo_depth); + } + pr_debug(" STAT DEPTH: %d\n", spacc->config.stat_fifo_depth); + + if (spacc->config.dma_type == SPACC_DMA_DDT) { + writel(0x1234567F, baseaddr + SPACC_REG_DST_PTR); + writel(0xDEADBEEF, baseaddr + SPACC_REG_SRC_PTR); + + if (((readl(baseaddr + SPACC_REG_DST_PTR)) != + (0x1234567F & SPACC_DST_PTR_PTR)) || + ((readl(baseaddr + SPACC_REG_SRC_PTR)) != + (0xDEADBEEF & SPACC_SRC_PTR_PTR))) { + pr_debug("ERR: Failed to set pointers\n"); + goto ERR; + } + } + + /* zero the IRQ CTRL/EN register + * (to make sure we're in a sane state) + */ + writel(0, spacc->regmap + SPACC_REG_IRQ_CTRL); + writel(0, spacc->regmap + SPACC_REG_IRQ_EN); + writel(0xFFFFFFFF, spacc->regmap + SPACC_REG_IRQ_STAT); + + /* init cache*/ + memset(&spacc->cache, 0, sizeof(spacc->cache)); + writel(0, spacc->regmap + SPACC_REG_SRC_PTR); + writel(0, spacc->regmap + SPACC_REG_DST_PTR); + writel(0, spacc->regmap + SPACC_REG_PROC_LEN); + writel(0, spacc->regmap + SPACC_REG_ICV_LEN); + writel(0, spacc->regmap + SPACC_REG_ICV_OFFSET); + writel(0, spacc->regmap + SPACC_REG_PRE_AAD_LEN); + writel(0, spacc->regmap + SPACC_REG_POST_AAD_LEN); + writel(0, spacc->regmap + SPACC_REG_IV_OFFSET); + writel(0, spacc->regmap + SPACC_REG_OFFSET); + writel(0, spacc->regmap + SPACC_REG_AUX_INFO); + + spacc->ctx = vmalloc(sizeof(struct spacc_ctx) * spacc->config.num_ctx); + if (!spacc->ctx) + goto ERR; + + spacc->job = vmalloc(sizeof(struct spacc_job) * SPACC_MAX_JOBS); + if (!spacc->job) + goto ERR; + + /* initialize job_idx and lookup table */ + spacc_job_init_all(spacc); + + /* initialize contexts */ + spacc_ctx_init_all(spacc); + + /* autodetect and set string size setting*/ + if (spacc->config.version == 0x61 || spacc->config.version >= 0x65) + spacc_xof_stringsize_autodetect(spacc); + + return CRYPTO_OK; +ERR: + spacc_fini(spacc); + pr_debug("ERR: Crypto Failed\n"); + + return -EIO; +} + +/* callback function to initialize tasklet running */ +void spacc_pop_jobs(unsigned long data) +{ + int num = 0; + struct spacc_priv *priv = (struct spacc_priv *)data; + struct spacc_device *spacc = &priv->spacc; + + /* decrement the WD CNT here since + * now we're actually going to respond + * to the IRQ completely + */ + if (spacc->wdcnt) + --(spacc->wdcnt); + + spacc_pop_packets(spacc, &num); +} + +int spacc_remove(struct platform_device *pdev) +{ + struct spacc_device *spacc; + struct spacc_priv *priv = platform_get_drvdata(pdev); + + /* free test vector memory*/ + spacc = &priv->spacc; + spacc_fini(spacc); + + tasklet_kill(&priv->pop_jobs); + + /* devm functions do proper cleanup */ + pdu_mem_deinit(&pdev->dev); + dev_dbg(&pdev->dev, "removed!\n"); + + return 0; +} + +int spacc_set_key_exp(struct spacc_device *spacc, int job_idx) +{ + struct spacc_ctx *ctx = NULL; + struct spacc_job *job = NULL; + + if (job_idx < 0 || job_idx > SPACC_MAX_JOBS) { + pr_debug("ERR: Invalid Job id specified (out of range)\n"); + return -ENXIO; + } + + job = &spacc->job[job_idx]; + ctx = context_lookup_by_job(spacc, job_idx); + + if (!ctx) { + pr_debug("ERR: Failed to find ctx id\n"); + return -EIO; + } + + job->ctrl |= SPACC_CTRL_MASK(SPACC_CTRL_KEY_EXP); + + return CRYPTO_OK; +} + +int spacc_compute_xcbc_key(struct spacc_device *spacc, int mode_id, + int job_idx, const unsigned char *key, + int keylen, unsigned char *xcbc_out) +{ + unsigned char *buf; + dma_addr_t bufphys; + struct pdu_ddt ddt; + unsigned char iv[16]; + int err, i, handle, usecbc, ctx_idx; + + if (job_idx >= 0 && job_idx < SPACC_MAX_JOBS) + ctx_idx = spacc->job[job_idx].ctx_idx; + else + ctx_idx = -1; + + if (mode_id == CRYPTO_MODE_MAC_XCBC) { + /* figure out if we can schedule the key */ + if (spacc_isenabled(spacc, CRYPTO_MODE_AES_ECB, 16)) + usecbc = 0; + else if (spacc_isenabled(spacc, CRYPTO_MODE_AES_CBC, 16)) + usecbc = 1; + else + return -1; + } else if (mode_id == CRYPTO_MODE_MAC_SM4_XCBC) { + /* figure out if we can schedule the key */ + if (spacc_isenabled(spacc, CRYPTO_MODE_SM4_ECB, 16)) + usecbc = 0; + else if (spacc_isenabled(spacc, CRYPTO_MODE_SM4_CBC, 16)) + usecbc = 1; + else + return -1; + } else { + return -1; + } + + memset(iv, 0, sizeof(iv)); + memset(&ddt, 0, sizeof(ddt)); + + buf = dma_alloc_coherent(get_ddt_device(), 64, &bufphys, GFP_KERNEL); + if (!buf) + return -EINVAL; + + handle = -1; + + /* set to 1111...., 2222...., 333... */ + for (i = 0; i < 48; i++) + buf[i] = (i >> 4) + 1; + + /* build DDT */ + err = pdu_ddt_init(&ddt, 1); + if (err) + goto xcbc_err; + + pdu_ddt_add(&ddt, bufphys, 48); + + /* open a handle in either CBC or ECB mode */ + if (mode_id == CRYPTO_MODE_MAC_XCBC) { + handle = spacc_open(spacc, (usecbc ? + CRYPTO_MODE_AES_CBC : CRYPTO_MODE_AES_ECB), + CRYPTO_MODE_NULL, ctx_idx, 0, NULL, NULL); + if (handle < 0) { + err = handle; + goto xcbc_err; + } + } else if (mode_id == CRYPTO_MODE_MAC_SM4_XCBC) { + handle = spacc_open(spacc, (usecbc ? + CRYPTO_MODE_SM4_CBC : CRYPTO_MODE_SM4_ECB), + CRYPTO_MODE_NULL, ctx_idx, 0, NULL, NULL); + if (handle < 0) { + err = handle; + goto xcbc_err; + } + } + spacc_set_operation(spacc, handle, OP_ENCRYPT, 0, 0, 0, 0, 0); + + if (usecbc) { + /* we can do the ECB work in CBC using three + * jobs with the IVreset to zero each time + */ + for (i = 0; i < 3; i++) { + spacc_write_context(spacc, handle, + SPACC_CRYPTO_OPERATION, key, + keylen, iv, 16); + err = spacc_packet_enqueue_ddt(spacc, handle, &ddt, + &ddt, 16, (i * 16) | + ((i * 16) << 16), 0, 0, 0, 0); + if (err != CRYPTO_OK) + goto xcbc_err; + + do { + err = spacc_packet_dequeue(spacc, handle); + } while (err == -EINPROGRESS); + if (err != CRYPTO_OK) + goto xcbc_err; + } + } else { + /* do the 48 bytes as a single SPAcc job this is the ideal case + * but only possible if ECB was enabled in the core + */ + spacc_write_context(spacc, handle, SPACC_CRYPTO_OPERATION, + key, keylen, iv, 16); + err = spacc_packet_enqueue_ddt(spacc, handle, &ddt, &ddt, 48, + 0, 0, 0, 0, 0); + if (err != CRYPTO_OK) + goto xcbc_err; + + do { + err = spacc_packet_dequeue(spacc, handle); + } while (err == -EINPROGRESS); + if (err != CRYPTO_OK) + goto xcbc_err; + } + + /* now we can copy the key*/ + memcpy(xcbc_out, buf, 48); + memset(buf, 0, 64); + +xcbc_err: + dma_free_coherent(get_ddt_device(), 64, buf, bufphys); + pdu_ddt_free(&ddt); + if (handle >= 0) + spacc_close(spacc, handle); + + if (err) + return -EINVAL; + + return 0; +} diff --git a/drivers/crypto/dwc-spacc/spacc_core.h b/drivers/crypto/dwc-spacc/spacc_core.h new file mode 100644 index 000000000000..399b7c976151 --- /dev/null +++ b/drivers/crypto/dwc-spacc/spacc_core.h @@ -0,0 +1,826 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + + +#ifndef SPACC_CORE_H_ +#define SPACC_CORE_H_ + +#include +#include +#include +#include +#include +#include "spacc_hal.h" + +enum { + SPACC_DMA_UNDEF = 0, + SPACC_DMA_DDT = 1, + SPACC_DMA_LINEAR = 2 +}; + +enum { + SPACC_OP_MODE_IRQ = 0, + SPACC_OP_MODE_WD = 1 /* watchdog */ +}; + +#define OP_ENCRYPT 0 +#define OP_DECRYPT 1 + +#define SPACC_CRYPTO_OPERATION 1 +#define SPACC_HASH_OPERATION 2 + +#define SPACC_AADCOPY_FLAG 0x80000000 + +#define SPACC_AUTO_SIZE (-1) + +#define SPACC_WD_LIMIT 0x80 +#define SPACC_WD_TIMER_INIT 0x40000 + +/********* Register Offsets **********/ +#define SPACC_REG_IRQ_EN 0x00000L +#define SPACC_REG_IRQ_STAT 0x00004L +#define SPACC_REG_IRQ_CTRL 0x00008L +#define SPACC_REG_FIFO_STAT 0x0000CL +#define SPACC_REG_SDMA_BRST_SZ 0x00010L + +#define SPACC_REG_SRC_PTR 0x00020L +#define SPACC_REG_DST_PTR 0x00024L +#define SPACC_REG_OFFSET 0x00028L +#define SPACC_REG_PRE_AAD_LEN 0x0002CL +#define SPACC_REG_POST_AAD_LEN 0x00030L + +#define SPACC_REG_PROC_LEN 0x00034L +#define SPACC_REG_ICV_LEN 0x00038L +#define SPACC_REG_ICV_OFFSET 0x0003CL +#define SPACC_REG_IV_OFFSET 0x00040L + +#define SPACC_REG_SW_CTRL 0x00044L +#define SPACC_REG_AUX_INFO 0x00048L +#define SPACC_REG_CTRL 0x0004CL + +#define SPACC_REG_STAT_POP 0x00050L +#define SPACC_REG_STATUS 0x00054L + +#define SPACC_REG_STAT_WD_CTRL 0x00080L + +#define SPACC_REG_KEY_SZ 0x00100L + +#define SPACC_REG_VIRTUAL_RQST 0x00140L +#define SPACC_REG_VIRTUAL_ALLOC 0x00144L +#define SPACC_REG_VIRTUAL_PRIO 0x00148L + +#define SPACC_REG_ID 0x00180L +#define SPACC_REG_CONFIG 0x00184L +#define SPACC_REG_CONFIG2 0x00190L + +#define SPACC_REG_SECURE_CTRL 0x001C0L +#define SPACC_REG_SECURE_RELEASE 0x001C4 + +#define SPACC_REG_SK_LOAD 0x00200L +#define SPACC_REG_SK_STAT 0x00204L +#define SPACC_REG_SK_KEY 0x00240L + +#define SPACC_REG_VERSION_EXT_3 0x00194L + +/* out 8MB from base of SPACC */ +#define SPACC_REG_SKP 0x800000UL + +/********** Context Offsets **********/ +#define SPACC_CTX_CIPH_KEY 0x04000L +#define SPACC_CTX_HASH_KEY 0x08000L + +/******** Sub-Context Offsets ********/ +#define SPACC_CTX_AES_KEY 0x00 +#define SPACC_CTX_AES_IV 0x20 + +#define SPACC_CTX_DES_KEY 0x08 +#define SPACC_CTX_DES_IV 0x00 + +/* use these to loop over CMDX macros */ +#define SPACC_CMDX_MAX 1 +#define SPACC_CMDX_MAX_QOS 3 +/********** IRQ_EN Bit Masks **********/ + +#define _SPACC_IRQ_CMD0 0 +#define _SPACC_IRQ_STAT 4 +#define _SPACC_IRQ_STAT_WD 12 +#define _SPACC_IRQ_GLBL 31 + +#define SPACC_IRQ_EN_CMD(x) (1UL << _SPACC_IRQ_CMD0 << (x)) +#define SPACC_IRQ_EN_STAT BIT(_SPACC_IRQ_STAT) +#define SPACC_IRQ_EN_STAT_WD BIT(_SPACC_IRQ_STAT_WD) +#define SPACC_IRQ_EN_GLBL BIT(_SPACC_IRQ_GLBL) + +/********* IRQ_STAT Bitmasks *********/ + +#define SPACC_IRQ_STAT_CMDX(x) (1UL << _SPACC_IRQ_CMD0 << (x)) +#define SPACC_IRQ_STAT_STAT BIT(_SPACC_IRQ_STAT) +#define SPACC_IRQ_STAT_STAT_WD BIT(_SPACC_IRQ_STAT_WD) + +#define SPACC_IRQ_STAT_CLEAR_STAT(spacc) writel(SPACC_IRQ_STAT_STAT, \ + (spacc)->regmap + SPACC_REG_IRQ_STAT) + +#define SPACC_IRQ_STAT_CLEAR_STAT_WD(spacc) writel(SPACC_IRQ_STAT_STAT_WD, \ + (spacc)->regmap + SPACC_REG_IRQ_STAT) + +#define SPACC_IRQ_STAT_CLEAR_CMDX(spacc, x) writel(SPACC_IRQ_STAT_CMDX(x), \ + (spacc)->regmap + SPACC_REG_IRQ_STAT) + +/********* IRQ_CTRL Bitmasks *********/ +/* CMD0 = 0; for QOS, CMD1 = 8, CMD2 = 16 */ +#define _SPACC_IRQ_CTRL_CMDX_CNT(x) (8 * (x)) +#define SPACC_IRQ_CTRL_CMDX_CNT_SET(x, n) \ + (((n) & 0xFF) << _SPACC_IRQ_CTRL_CMDX_CNT(x)) +#define SPACC_IRQ_CTRL_CMDX_CNT_MASK(x) \ + (0xFF << _SPACC_IRQ_CTRL_CMDX_CNT(x)) + +/* STAT_CNT is at 16 and for QOS at 24 */ +#define _SPACC_IRQ_CTRL_STAT_CNT 16 +#define SPACC_IRQ_CTRL_STAT_CNT_SET(n) ((n) << _SPACC_IRQ_CTRL_STAT_CNT) +#define SPACC_IRQ_CTRL_STAT_CNT_MASK (0x1FF << _SPACC_IRQ_CTRL_STAT_CNT) + +#define _SPACC_IRQ_CTRL_STAT_CNT_QOS 24 +#define SPACC_IRQ_CTRL_STAT_CNT_SET_QOS(n) \ + ((n) << _SPACC_IRQ_CTRL_STAT_CNT_QOS) +#define SPACC_IRQ_CTRL_STAT_CNT_MASK_QOS \ + (0x7F << _SPACC_IRQ_CTRL_STAT_CNT_QOS) + +/******** FIFO_STAT Bitmasks *********/ + +/* SPACC with QOS */ +#define SPACC_FIFO_STAT_CMDX_CNT_MASK(x) \ + (0x7F << ((x) * 8)) +#define SPACC_FIFO_STAT_CMDX_CNT_GET(x, y) \ + (((y) & SPACC_FIFO_STAT_CMDX_CNT_MASK(x)) >> ((x) * 8)) +#define SPACC_FIFO_STAT_CMDX_FULL(x) (1UL << (7 + (x) * 8)) + +#define _SPACC_FIFO_STAT_STAT_CNT_QOS 24 +#define SPACC_FIFO_STAT_STAT_CNT_MASK_QOS \ + (0x7F << _SPACC_FIFO_STAT_STAT_CNT_QOS) +#define SPACC_FIFO_STAT_STAT_CNT_GET_QOS(y) \ + (((y) & \ + SPACC_FIFO_STAT_STAT_CNT_MASK_QOS) >> _SPACC_FIFO_STAT_STAT_CNT_QOS) + +/* SPACC without QOS */ +#define SPACC_FIFO_STAT_CMD0_CNT_MASK (0x1FF) +#define SPACC_FIFO_STAT_CMD0_CNT_GET(y) ((y) & SPACC_FIFO_STAT_CMD0_CNT_MASK) +#define _SPACC_FIFO_STAT_CMD0_FULL 15 +#define SPACC_FIFO_STAT_CMD0_FULL BIT(_SPACC_FIFO_STAT_CMD0_FULL) + +#define _SPACC_FIFO_STAT_STAT_CNT 16 +#define SPACC_FIFO_STAT_STAT_CNT_MASK (0x1FF << _SPACC_FIFO_STAT_STAT_CNT) +#define SPACC_FIFO_STAT_STAT_CNT_GET(y) \ + (((y) & SPACC_FIFO_STAT_STAT_CNT_MASK) >> _SPACC_FIFO_STAT_STAT_CNT) + +/* both */ +#define _SPACC_FIFO_STAT_STAT_EMPTY 31 +#define SPACC_FIFO_STAT_STAT_EMPTY BIT(_SPACC_FIFO_STAT_STAT_EMPTY) + +/********* SRC/DST_PTR Bitmasks **********/ + +#define SPACC_SRC_PTR_PTR 0xFFFFFFF8 +#define SPACC_DST_PTR_PTR 0xFFFFFFF8 + +/********** OFFSET Bitmasks **********/ + +#define SPACC_OFFSET_SRC_O 0 +#define SPACC_OFFSET_SRC_W 16 +#define SPACC_OFFSET_DST_O 16 +#define SPACC_OFFSET_DST_W 16 + +#define SPACC_MIN_CHUNK_SIZE 1024 +#define SPACC_MAX_CHUNK_SIZE 16384 + +/********* PKT_LEN Bitmasks **********/ + +#ifndef _SPACC_PKT_LEN_PROC_LEN +#define _SPACC_PKT_LEN_PROC_LEN 0 +#endif +#ifndef _SPACC_PKT_LEN_AAD_LEN +#define _SPACC_PKT_LEN_AAD_LEN 16 +#endif + +/********* SW_CTRL Bitmasks ***********/ + +#define _SPACC_SW_CTRL_ID_0 0 +#define SPACC_SW_CTRL_ID_W 8 +#define SPACC_SW_CTRL_ID_MASK (0xFF << _SPACC_SW_CTRL_ID_0) +#define SPACC_SW_CTRL_ID_GET(y) \ + (((y) & SPACC_SW_CTRL_ID_MASK) >> _SPACC_SW_CTRL_ID_0) +#define SPACC_SW_CTRL_ID_SET(id) \ + (((id) & SPACC_SW_CTRL_ID_MASK) >> _SPACC_SW_CTRL_ID_0) + +#define _SPACC_SW_CTRL_PRIO 30 +#define SPACC_SW_CTRL_PRIO_MASK 0x3 +#define SPACC_SW_CTRL_PRIO_SET(prio) \ + (((prio) & SPACC_SW_CTRL_PRIO_MASK) << _SPACC_SW_CTRL_PRIO) + +/* Priorities */ +#define SPACC_SW_CTRL_PRIO_HI 0 +#define SPACC_SW_CTRL_PRIO_MED 1 +#define SPACC_SW_CTRL_PRIO_LOW 2 + +/*********** SECURE_CTRL bitmasks *********/ +#define _SPACC_SECURE_CTRL_MS_SRC 0 +#define _SPACC_SECURE_CTRL_MS_DST 1 +#define _SPACC_SECURE_CTRL_MS_DDT 2 +#define _SPACC_SECURE_CTRL_LOCK 31 + +#define SPACC_SECURE_CTRL_MS_SRC BIT(_SPACC_SECURE_CTRL_MS_SRC) +#define SPACC_SECURE_CTRL_MS_DST BIT(_SPACC_SECURE_CTRL_MS_DST) +#define SPACC_SECURE_CTRL_MS_DDT BIT(_SPACC_SECURE_CTRL_MS_DDT) +#define SPACC_SECURE_CTRL_LOCK BIT(_SPACC_SECURE_CTRL_LOCK) + +/********* SKP bits **************/ +#define _SPACC_SK_LOAD_CTX_IDX 0 +#define _SPACC_SK_LOAD_ALG 8 +#define _SPACC_SK_LOAD_MODE 12 +#define _SPACC_SK_LOAD_SIZE 16 +#define _SPACC_SK_LOAD_ENC_EN 30 +#define _SPACC_SK_LOAD_DEC_EN 31 +#define _SPACC_SK_STAT_BUSY 0 + +#define SPACC_SK_LOAD_ENC_EN BIT(_SPACC_SK_LOAD_ENC_EN) +#define SPACC_SK_LOAD_DEC_EN BIT(_SPACC_SK_LOAD_DEC_EN) +#define SPACC_SK_STAT_BUSY BIT(_SPACC_SK_STAT_BUSY) + +/*********** CTRL Bitmasks ***********/ +/* These CTRL field locations vary with SPACC version + * and if they are used, they should be set accordingly + */ +#define _SPACC_CTRL_CIPH_ALG 0 +#define _SPACC_CTRL_HASH_ALG 4 +#define _SPACC_CTRL_CIPH_MODE 8 +#define _SPACC_CTRL_HASH_MODE 12 +#define _SPACC_CTRL_MSG_BEGIN 14 +#define _SPACC_CTRL_MSG_END 15 +#define _SPACC_CTRL_CTX_IDX 16 +#define _SPACC_CTRL_ENCRYPT 24 +#define _SPACC_CTRL_AAD_COPY 25 +#define _SPACC_CTRL_ICV_PT 26 +#define _SPACC_CTRL_ICV_ENC 27 +#define _SPACC_CTRL_ICV_APPEND 28 +#define _SPACC_CTRL_KEY_EXP 29 +#define _SPACC_CTRL_SEC_KEY 31 + +/* CTRL bitmasks for 4.15+ cores */ +#define _SPACC_CTRL_CIPH_ALG_415 0 +#define _SPACC_CTRL_HASH_ALG_415 3 +#define _SPACC_CTRL_CIPH_MODE_415 8 +#define _SPACC_CTRL_HASH_MODE_415 12 + +/********* Virtual Spacc Priority Bitmasks **********/ +#define _SPACC_VPRIO_MODE 0 +#define _SPACC_VPRIO_WEIGHT 8 + +/********* AUX INFO Bitmasks *********/ +#define _SPACC_AUX_INFO_DIR 0 +#define _SPACC_AUX_INFO_BIT_ALIGN 1 +#define _SPACC_AUX_INFO_CBC_CS 16 + +/********* STAT_POP Bitmasks *********/ +#define _SPACC_STAT_POP_POP 0 +#define SPACC_STAT_POP_POP BIT(_SPACC_STAT_POP_POP) + +/********** STATUS Bitmasks **********/ +#define _SPACC_STATUS_SW_ID 0 +#define _SPACC_STATUS_RET_CODE 24 +#define _SPACC_STATUS_SEC_CMD 31 +#define SPACC_GET_STATUS_RET_CODE(s) \ + (((s) >> _SPACC_STATUS_RET_CODE) & 0x7) + +#define SPACC_STATUS_SW_ID_MASK (0xFF << _SPACC_STATUS_SW_ID) +#define SPACC_STATUS_SW_ID_GET(y) \ + (((y) & SPACC_STATUS_SW_ID_MASK) >> _SPACC_STATUS_SW_ID) + +/********** KEY_SZ Bitmasks **********/ +#define _SPACC_KEY_SZ_SIZE 0 +#define _SPACC_KEY_SZ_CTX_IDX 8 +#define _SPACC_KEY_SZ_CIPHER 31 + +#define SPACC_KEY_SZ_CIPHER BIT(_SPACC_KEY_SZ_CIPHER) + +#define SPACC_SET_CIPHER_KEY_SZ(z) \ + (((z) << _SPACC_KEY_SZ_SIZE) | (1UL << _SPACC_KEY_SZ_CIPHER)) +#define SPACC_SET_HASH_KEY_SZ(z) ((z) << _SPACC_KEY_SZ_SIZE) +#define SPACC_SET_KEY_CTX(ctx) ((ctx) << _SPACC_KEY_SZ_CTX_IDX) + +/*****************************************************************************/ + +#define AUX_DIR(a) ((a) << _SPACC_AUX_INFO_DIR) +#define AUX_BIT_ALIGN(a) ((a) << _SPACC_AUX_INFO_BIT_ALIGN) +#define AUX_CBC_CS(a) ((a) << _SPACC_AUX_INFO_CBC_CS) + +#define VPRIO_SET(mode, weight) \ + (((mode) << _SPACC_VPRIO_MODE) | ((weight) << _SPACC_VPRIO_WEIGHT)) + +#ifndef MAX_DDT_ENTRIES +/* add one for null at end of list */ +#define MAX_DDT_ENTRIES \ + ((SPACC_MAX_MSG_MALLOC_SIZE / SPACC_MAX_PARTICLE_SIZE) + 1) +#endif + +#define DDT_ENTRY_SIZE (sizeof(ddt_entry) * MAX_DDT_ENTRIES) + +#ifndef SPACC_MAX_JOBS +#define SPACC_MAX_JOBS BIT(SPACC_SW_CTRL_ID_W) +#endif + +#if SPACC_MAX_JOBS > 256 +# error SPACC_MAX_JOBS cannot exceed 256. +#endif + +#ifndef SPACC_MAX_JOB_BUFFERS +#define SPACC_MAX_JOB_BUFFERS 192 +#endif + +#define CRYPTO_USED_JB 256 + +/* max DDT particle size */ +#ifndef SPACC_MAX_PARTICLE_SIZE +#define SPACC_MAX_PARTICLE_SIZE 4096 +#endif + +/* max message size from HW configuration */ +/* usually defined in ICD as (2 exponent 16) -1 */ +#ifndef _SPACC_MAX_MSG_MALLOC_SIZE +#define _SPACC_MAX_MSG_MALLOC_SIZE 16 +#endif +#define SPACC_MAX_MSG_MALLOC_SIZE BIT(_SPACC_MAX_MSG_MALLOC_SIZE) + +#ifndef SPACC_MAX_MSG_SIZE +#define SPACC_MAX_MSG_SIZE (SPACC_MAX_MSG_MALLOC_SIZE - 1) +#endif + +#define SPACC_LOOP_WAIT 1000000 +#define SPACC_CTR_IV_MAX8 ((u32)0xFF) +#define SPACC_CTR_IV_MAX16 ((u32)0xFFFF) +#define SPACC_CTR_IV_MAX32 ((u32)0xFFFFFFFF) +#define SPACC_CTR_IV_MAX64 ((u64)0xFFFFFFFFFFFFFFFF) + +/* cipher algos */ +enum ecipher { + C_NULL = 0, + C_DES = 1, + C_AES = 2, + C_RC4 = 3, + C_MULTI2 = 4, + C_KASUMI = 5, + C_SNOW3G_UEA2 = 6, + C_ZUC_UEA3 = 7, + C_CHACHA20 = 8, + C_SM4 = 9, + C_MAX = 10 +}; + +/* ctrl reg cipher modes */ +enum eciphermode { + CM_ECB = 0, + CM_CBC = 1, + CM_CTR = 2, + CM_CCM = 3, + CM_GCM = 5, + CM_OFB = 7, + CM_CFB = 8, + CM_F8 = 9, + CM_XTS = 10, + CM_MAX = 11 +}; + +enum echachaciphermode { + CM_CHACHA_STREAM = 2, + CM_CHACHA_AEAD = 5 +}; + +enum ehash { + H_NULL = 0, + H_MD5 = 1, + H_SHA1 = 2, + H_SHA224 = 3, + H_SHA256 = 4, + H_SHA384 = 5, + H_SHA512 = 6, + H_XCBC = 7, + H_CMAC = 8, + H_KF9 = 9, + H_SNOW3G_UIA2 = 10, + H_CRC32_I3E802_3 = 11, + H_ZUC_UIA3 = 12, + H_SHA512_224 = 13, + H_SHA512_256 = 14, + H_MICHAEL = 15, + H_SHA3_224 = 16, + H_SHA3_256 = 17, + H_SHA3_384 = 18, + H_SHA3_512 = 19, + H_SHAKE128 = 20, + H_SHAKE256 = 21, + H_POLY1305 = 22, + H_SM3 = 23, + H_SM4_XCBC_MAC = 24, + H_SM4_CMAC = 25, + H_MAX = 26 +}; + +enum ehashmode { + HM_RAW = 0, + HM_SSLMAC = 1, + HM_HMAC = 2, + HM_MAX = 3 +}; + +enum eshakehashmode { + HM_SHAKE_SHAKE = 0, + HM_SHAKE_CSHAKE = 1, + HM_SHAKE_KMAC = 2 +}; + +enum spacc_ret_code { + SPACC_OK = 0, + SPACC_ICVFAIL = 1, + SPACC_MEMERR = 2, + SPACC_BLOCKERR = 3, + SPACC_SECERR = 4 +}; + +enum eicvpos { + IP_ICV_OFFSET = 0, + IP_ICV_APPEND = 1, + IP_ICV_IGNORE = 2, + IP_MAX = 3 +}; + +enum { + /* HASH of plaintext */ + ICV_HASH = 0, + /* HASH the plaintext and encrypt the plaintext and ICV */ + ICV_HASH_ENCRYPT = 1, + /* HASH the ciphertext */ + ICV_ENCRYPT_HASH = 2, + ICV_IGNORE = 3, + IM_MAX = 4 +}; + +enum { + NO_PARTIAL_PCK = 0, + FIRST_PARTIAL_PCK = 1, + MIDDLE_PARTIAL_PCK = 2, + LAST_PARTIAL_PCK = 3 +}; + +enum crypto_modes { + CRYPTO_MODE_NULL, + CRYPTO_MODE_AES_ECB, + CRYPTO_MODE_AES_CBC, + CRYPTO_MODE_AES_CTR, + CRYPTO_MODE_AES_CCM, + CRYPTO_MODE_AES_GCM, + CRYPTO_MODE_AES_F8, + CRYPTO_MODE_AES_XTS, + CRYPTO_MODE_AES_CFB, + CRYPTO_MODE_AES_OFB, + CRYPTO_MODE_AES_CS1, + CRYPTO_MODE_AES_CS2, + CRYPTO_MODE_AES_CS3, + CRYPTO_MODE_MULTI2_ECB, + CRYPTO_MODE_MULTI2_CBC, + CRYPTO_MODE_MULTI2_OFB, + CRYPTO_MODE_MULTI2_CFB, + CRYPTO_MODE_3DES_CBC, + CRYPTO_MODE_3DES_ECB, + CRYPTO_MODE_DES_CBC, + CRYPTO_MODE_DES_ECB, + CRYPTO_MODE_KASUMI_ECB, + CRYPTO_MODE_KASUMI_F8, + CRYPTO_MODE_SNOW3G_UEA2, + CRYPTO_MODE_ZUC_UEA3, + CRYPTO_MODE_CHACHA20_STREAM, + CRYPTO_MODE_CHACHA20_POLY1305, + CRYPTO_MODE_SM4_ECB, + CRYPTO_MODE_SM4_CBC, + CRYPTO_MODE_SM4_CFB, + CRYPTO_MODE_SM4_OFB, + CRYPTO_MODE_SM4_CTR, + CRYPTO_MODE_SM4_CCM, + CRYPTO_MODE_SM4_GCM, + CRYPTO_MODE_SM4_F8, + CRYPTO_MODE_SM4_XTS, + CRYPTO_MODE_SM4_CS1, + CRYPTO_MODE_SM4_CS2, + CRYPTO_MODE_SM4_CS3, + + CRYPTO_MODE_HASH_MD5, + CRYPTO_MODE_HMAC_MD5, + CRYPTO_MODE_HASH_SHA1, + CRYPTO_MODE_HMAC_SHA1, + CRYPTO_MODE_HASH_SHA224, + CRYPTO_MODE_HMAC_SHA224, + CRYPTO_MODE_HASH_SHA256, + CRYPTO_MODE_HMAC_SHA256, + CRYPTO_MODE_HASH_SHA384, + CRYPTO_MODE_HMAC_SHA384, + CRYPTO_MODE_HASH_SHA512, + CRYPTO_MODE_HMAC_SHA512, + CRYPTO_MODE_HASH_SHA512_224, + CRYPTO_MODE_HMAC_SHA512_224, + CRYPTO_MODE_HASH_SHA512_256, + CRYPTO_MODE_HMAC_SHA512_256, + + CRYPTO_MODE_MAC_XCBC, + CRYPTO_MODE_MAC_CMAC, + CRYPTO_MODE_MAC_KASUMI_F9, + CRYPTO_MODE_MAC_SNOW3G_UIA2, + CRYPTO_MODE_MAC_ZUC_UIA3, + CRYPTO_MODE_MAC_POLY1305, + + CRYPTO_MODE_SSLMAC_MD5, + CRYPTO_MODE_SSLMAC_SHA1, + CRYPTO_MODE_HASH_CRC32, + CRYPTO_MODE_MAC_MICHAEL, + + CRYPTO_MODE_HASH_SHA3_224, + CRYPTO_MODE_HASH_SHA3_256, + CRYPTO_MODE_HASH_SHA3_384, + CRYPTO_MODE_HASH_SHA3_512, + + CRYPTO_MODE_HASH_SHAKE128, + CRYPTO_MODE_HASH_SHAKE256, + CRYPTO_MODE_HASH_CSHAKE128, + CRYPTO_MODE_HASH_CSHAKE256, + CRYPTO_MODE_MAC_KMAC128, + CRYPTO_MODE_MAC_KMAC256, + CRYPTO_MODE_MAC_KMACXOF128, + CRYPTO_MODE_MAC_KMACXOF256, + + CRYPTO_MODE_HASH_SM3, + CRYPTO_MODE_HMAC_SM3, + CRYPTO_MODE_MAC_SM4_XCBC, + CRYPTO_MODE_MAC_SM4_CMAC, + + CRYPTO_MODE_LAST +}; + +/* job descriptor */ +typedef void (*spacc_callback)(void *spacc_dev, void *data); + +struct spacc_job { + unsigned long + enc_mode, /* Encryption Algorithm mode */ + hash_mode, /* HASH Algorithm mode */ + icv_len, + icv_offset, + op, /* Operation */ + ctrl, /* CTRL shadow register */ + + /* context just initialized or taken, + * and this is the first use. + */ + first_use, + pre_aad_sz, post_aad_sz, /* size of AAD for the latest packet*/ + hkey_sz, + ckey_sz; + + /* Direction and bit alignment parameters for the AUX_INFO reg */ + unsigned int auxinfo_dir, auxinfo_bit_align; + unsigned int auxinfo_cs_mode; /* AUX info setting for CBC-CS */ + + u32 ctx_idx; + unsigned int job_used, job_swid, job_done, job_err, job_secure; + spacc_callback cb; + void *cbdata; + +}; + +#define SPACC_CTX_IDX_UNUSED 0xFFFFFFFF +#define SPACC_JOB_IDX_UNUSED 0xFFFFFFFF + +struct spacc_ctx { + /* Memory context to store cipher keys*/ + void __iomem *ciph_key; + /* Memory context to store hash keys*/ + void __iomem *hash_key; + /* reference count of jobs using this context */ + int ref_cnt; + /* number of contexts following related to this one */ + int ncontig; +}; + +#define SPACC_CTRL_MASK(field) \ + (1UL << spacc->config.ctrl_map[(field)]) +#define SPACC_CTRL_SET(field, value) \ + ((value) << spacc->config.ctrl_map[(field)]) + +enum { + SPACC_CTRL_VER_0, + SPACC_CTRL_VER_1, + SPACC_CTRL_VER_2, + SPACC_CTRL_VER_SIZE +}; + +enum { + SPACC_CTRL_CIPH_ALG, + SPACC_CTRL_CIPH_MODE, + SPACC_CTRL_HASH_ALG, + SPACC_CTRL_HASH_MODE, + SPACC_CTRL_ENCRYPT, + SPACC_CTRL_CTX_IDX, + SPACC_CTRL_SEC_KEY, + SPACC_CTRL_AAD_COPY, + SPACC_CTRL_ICV_PT, + SPACC_CTRL_ICV_ENC, + SPACC_CTRL_ICV_APPEND, + SPACC_CTRL_KEY_EXP, + SPACC_CTRL_MSG_BEGIN, + SPACC_CTRL_MSG_END, + SPACC_CTRL_MAPSIZE +}; + +struct spacc_device { + void __iomem *regmap; + int zero_key; + + /* hardware configuration */ + struct { + unsigned int version, + pdu_version, + project; + uint32_t max_msg_size; /* max PROCLEN value */ + + unsigned char modes[CRYPTO_MODE_LAST]; + + int num_ctx, /* no. of contexts */ + num_sec_ctx, /* no. of SKP contexts*/ + sec_ctx_page_size, /* page size of SKP context in bytes*/ + ciph_page_size, /* cipher context page size in bytes*/ + hash_page_size, /* hash context page size in bytes*/ + string_size, + is_qos, /* QOS spacc? */ + is_pdu, /* PDU spacc? */ + is_secure, + is_secure_port, /* Are we on the secure port? */ + is_partial, /* Is partial processing enabled? */ + is_ivimport, /* is ivimport enabled? */ + dma_type, /* DMA type: linear or scattergather */ + idx, /* Which virtual spacc IDX is this? */ + priority, /* Weighted priority of virtual spacc */ + cmd0_fifo_depth, /* CMD FIFO depths */ + cmd1_fifo_depth, + cmd2_fifo_depth, + stat_fifo_depth, /* depth of STATUS FIFO */ + fifo_cnt, + ideal_stat_level, + spacc_endian; + + uint32_t wd_timer; + u64 oldtimer, timer; + + const u8 *ctrl_map; /* map of ctrl register field offsets */ + } config; + + struct spacc_job_buffer { + int active; + int job_idx; + struct pdu_ddt *src, *dst; + u32 proc_sz, aad_offset, pre_aad_sz, + post_aad_sz, iv_offset, prio; + } job_buffer[SPACC_MAX_JOB_BUFFERS]; + + int jb_head, jb_tail; + + int op_mode, /* operating mode and watchdog functionality */ + wdcnt; /* number of pending WD IRQs*/ + + /* SW_ID value which will be used for next job. */ + unsigned int job_next_swid; + + struct spacc_ctx *ctx; /* This size changes per configured device */ + struct spacc_job *job; /* allocate memory for [SPACC_MAX_JOBS]; */ + int job_lookup[SPACC_MAX_JOBS]; /* correlate SW_ID back to job index */ + + spinlock_t lock; /* lock for register access */ + spinlock_t ctx_lock; /* lock for context manager */ + + /* callback functions for IRQ processing */ + void (*irq_cb_cmdx)(struct spacc_device *spacc, int x); + void (*irq_cb_stat)(struct spacc_device *spacc); + void (*irq_cb_stat_wd)(struct spacc_device *spacc); + + /* this is called after jobs have been popped off the STATUS FIFO + * useful so you can be told when there might be space available + * in the CMD FIFO + */ + void (*spacc_notify_jobs)(struct spacc_device *spacc); + + /* cache*/ + struct { + u32 src_ptr, + dst_ptr, + proc_len, + icv_len, + icv_offset, + pre_aad, + post_aad, + iv_offset, + offset, + aux; + } cache; + + struct device *dptr; +}; + +enum { + SPACC_IRQ_MODE_WD = 1, /* use WD*/ + SPACC_IRQ_MODE_STEP = 2 /* older use CMD/STAT stepping */ +}; + +enum { + SPACC_IRQ_CMD_GET = 0, + SPACC_IRQ_CMD_SET = 1 +}; + +struct spacc_priv { + struct spacc_device spacc; + struct semaphore core_running; + struct tasklet_struct pop_jobs; + spinlock_t hw_lock; + unsigned long max_msg_len; +}; + + +int spacc_open(struct spacc_device *spacc, int enc, int hash, int ctx, + int secure_mode, spacc_callback cb, void *cbdata); +int spacc_clone_handle(struct spacc_device *spacc, int old_handle, + void *cbdata); +int spacc_close(struct spacc_device *spacc, int job_idx); +int spacc_set_operation(struct spacc_device *spacc, int job_idx, int op, + u32 prot, uint32_t icvcmd, uint32_t icvoff, + uint32_t icvsz, uint32_t sec_key); +int spacc_set_key_exp(struct spacc_device *spacc, int job_idx); + +int spacc_packet_enqueue_ddt_ex(struct spacc_device *spacc, int use_jb, + int job_idx, struct pdu_ddt *src_ddt, struct pdu_ddt *dst_ddt, + u32 proc_sz, uint32_t aad_offset, uint32_t pre_aad_sz, + u32 post_aad_sz, uint32_t iv_offset, uint32_t prio); +int spacc_packet_enqueue_ddt(struct spacc_device *spacc, int job_idx, + struct pdu_ddt *src_ddt, struct pdu_ddt *dst_ddt, + uint32_t proc_sz, u32 aad_offset, uint32_t pre_aad_sz, + uint32_t post_aad_sz, u32 iv_offset, uint32_t prio); + +/* IRQ handling functions */ +void spacc_irq_cmdx_enable(struct spacc_device *spacc, int cmdx, int cmdx_cnt); +void spacc_irq_cmdx_disable(struct spacc_device *spacc, int cmdx); +void spacc_irq_stat_enable(struct spacc_device *spacc, int stat_cnt); +void spacc_irq_stat_disable(struct spacc_device *spacc); +void spacc_irq_stat_wd_enable(struct spacc_device *spacc); +void spacc_irq_stat_wd_disable(struct spacc_device *spacc); +void spacc_irq_glbl_enable(struct spacc_device *spacc); +void spacc_irq_glbl_disable(struct spacc_device *spacc); +uint32_t spacc_process_irq(struct spacc_device *spacc); +void spacc_set_wd_count(struct spacc_device *spacc, uint32_t val); +irqreturn_t spacc_irq_handler(int irq, void *dev); +int spacc_sgs_to_ddt(struct device *dev, + struct scatterlist *sg1, int len1, int *ents1, + struct scatterlist *sg2, int len2, int *ents2, + struct scatterlist *sg3, int len3, int *ents3, + struct pdu_ddt *ddt, int dma_direction); +int spacc_sg_to_ddt(struct device *dev, struct scatterlist *sg, + int nbytes, struct pdu_ddt *ddt, int dma_direction); + +/* Context Manager */ +void spacc_ctx_init_all(struct spacc_device *spacc); + +/* SPAcc specific manipulation of context memory */ +int spacc_write_context(struct spacc_device *spacc, int job_idx, int op, + const unsigned char *key, int ksz, + const unsigned char *iv, int ivsz); + +int spacc_read_context(struct spacc_device *spacc, int job_idx, int op, + unsigned char *key, int ksz, unsigned char *iv, + int ivsz); + +/* Job Manager */ +void spacc_job_init_all(struct spacc_device *spacc); +int spacc_job_request(struct spacc_device *dev, int job_idx); +int spacc_job_release(struct spacc_device *dev, int job_idx); +int spacc_handle_release(struct spacc_device *spacc, int job_idx); + +/* Helper functions */ +struct spacc_ctx *context_lookup_by_job(struct spacc_device *spacc, + int job_idx); +int spacc_isenabled(struct spacc_device *spacc, int mode, int keysize); +int spacc_compute_xcbc_key(struct spacc_device *spacc, int mode_id, + int job_idx, const unsigned char *key, + int keylen, unsigned char *xcbc_out); + +int spacc_process_jb(struct spacc_device *spacc); +int spacc_remove(struct platform_device *pdev); +int spacc_static_config(struct spacc_device *spacc); +int spacc_autodetect(struct spacc_device *spacc); +void spacc_pop_jobs(unsigned long data); +void spacc_fini(struct spacc_device *spacc); +int spacc_init(void __iomem *baseaddr, struct spacc_device *spacc, + struct pdu_info *info); +int spacc_pop_packets(struct spacc_device *spacc, int *num_popped); +void spacc_stat_process(struct spacc_device *spacc); +void spacc_cmd_process(struct spacc_device *spacc, int x); + +#endif diff --git a/drivers/crypto/dwc-spacc/spacc_device.c b/drivers/crypto/dwc-spacc/spacc_device.c new file mode 100644 index 000000000000..6a0c63746cac --- /dev/null +++ b/drivers/crypto/dwc-spacc/spacc_device.c @@ -0,0 +1,339 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include +#include +#include +#include "spacc_device.h" + +static struct platform_device *spacc_pdev[ELP_CAPI_MAX_DEV + 1]; + +#define VSPACC_PRIORITY_MAX 15 + +void spacc_cmd_process(struct spacc_device *spacc, int x) +{ + struct spacc_priv *priv = container_of(spacc, struct spacc_priv, spacc); + + /* run tasklet to pop jobs off fifo */ + tasklet_schedule(&priv->pop_jobs); +} +void spacc_stat_process(struct spacc_device *spacc) +{ + struct spacc_priv *priv = container_of(spacc, struct spacc_priv, spacc); + + /* run tasklet to pop jobs off fifo */ + tasklet_schedule(&priv->pop_jobs); +} + + +int spacc_probe(struct platform_device *pdev, + const struct of_device_id snps_spacc_id[]) +{ + int spacc_idx = -1; + struct resource *mem; + int spacc_endian = 0; + void __iomem *baseaddr; + struct pdu_info info; + int spacc_priority = -1; + struct spacc_priv *priv; + int x = 0, err, oldmode, irq_num; + const struct of_device_id *match, *id; + u64 oldtimer = 100000, timer = 100000; + + if (pdev->dev.of_node) { + id = of_match_node(snps_spacc_id, pdev->dev.of_node); + if (!id) { + dev_err(&pdev->dev, "DT node did not match\n"); + return -EINVAL; + } + } + + /* Initialize DDT DMA pools based on this device's resources */ + if (pdu_mem_init(&pdev->dev)) { + dev_err(&pdev->dev, "Could not initialize DMA pools\n"); + return -ENOMEM; + } + + match = of_match_device(of_match_ptr(snps_spacc_id), &pdev->dev); + if (!match) { + dev_err(&pdev->dev, "SPAcc dtb missing"); + return -ENODEV; + } + + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!mem) { + dev_err(&pdev->dev, "no memory resource for spacc\n"); + err = -ENXIO; + goto free_ddt_mem_pool; + } + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) { + err = -ENOMEM; + goto free_ddt_mem_pool; + } + + /* Read spacc priority and index and save inside priv.spacc.config */ + if (of_property_read_u32(pdev->dev.of_node, "spacc_priority", + &spacc_priority)) { + dev_err(&pdev->dev, "No vspacc priority specified\n"); + err = -EINVAL; + goto free_ddt_mem_pool; + } + + if (spacc_priority < 0 && spacc_priority > VSPACC_PRIORITY_MAX) { + dev_err(&pdev->dev, "Invalid vspacc priority\n"); + err = -EINVAL; + goto free_ddt_mem_pool; + } + priv->spacc.config.priority = spacc_priority; + + if (of_property_read_u32(pdev->dev.of_node, "spacc_index", + &spacc_idx)) { + dev_err(&pdev->dev, "No vspacc index specified\n"); + err = -EINVAL; + goto free_ddt_mem_pool; + } + priv->spacc.config.idx = spacc_idx; + + if (of_property_read_u32(pdev->dev.of_node, "spacc_endian", + &spacc_endian)) { + dev_dbg(&pdev->dev, "No spacc_endian specified\n"); + dev_dbg(&pdev->dev, "Default spacc Endianness (0==little)\n"); + spacc_endian = 0; + } + priv->spacc.config.spacc_endian = spacc_endian; + + if (of_property_read_u64(pdev->dev.of_node, "oldtimer", + &oldtimer)) { + dev_dbg(&pdev->dev, "No oldtimer specified\n"); + dev_dbg(&pdev->dev, "Default oldtimer (100000)\n"); + oldtimer = 100000; + } + priv->spacc.config.oldtimer = oldtimer; + + if (of_property_read_u64(pdev->dev.of_node, "timer", &timer)) { + dev_dbg(&pdev->dev, "No timer specified\n"); + dev_dbg(&pdev->dev, "Default timer (100000)\n"); + timer = 100000; + } + priv->spacc.config.timer = timer; + + baseaddr = devm_ioremap_resource(&pdev->dev, mem); + if (IS_ERR(baseaddr)) { + dev_err(&pdev->dev, "unable to map iomem\n"); + err = PTR_ERR(baseaddr); + goto free_ddt_mem_pool; + } + + pdu_get_version(baseaddr, &info); + if (pdev->dev.platform_data) { + struct pdu_info *parent_info = pdev->dev.platform_data; + + memcpy(&info.pdu_config, &parent_info->pdu_config, + sizeof(info.pdu_config)); + } + + dev_dbg(&pdev->dev, "EPN %04X : virt [%d]\n", + info.spacc_version.project, + info.spacc_version.vspacc_idx); + + /* Validate virtual spacc index with vspacc count read from + * VERSION_EXT.VSPACC_CNT. Thus vspacc count=3, gives valid index 0,1,2 + */ + if (spacc_idx != info.spacc_version.vspacc_idx) { + dev_err(&pdev->dev, "DTS vspacc_idx mismatch read value\n"); + err = -EINVAL; + goto free_ddt_mem_pool; + } + + if (spacc_idx < 0 || spacc_idx > (info.spacc_config.num_vspacc - 1)) { + dev_err(&pdev->dev, "Invalid vspacc index specified\n"); + err = -EINVAL; + goto free_ddt_mem_pool; + } + + err = spacc_init(baseaddr, &priv->spacc, &info); + if (err != CRYPTO_OK) { + dev_err(&pdev->dev, "Failed to initialize device %d\n", x); + err = -ENXIO; + goto free_ddt_mem_pool; + } + + spin_lock_init(&priv->hw_lock); + spacc_irq_glbl_disable(&priv->spacc); + tasklet_init(&priv->pop_jobs, spacc_pop_jobs, (unsigned long)priv); + + priv->spacc.dptr = &pdev->dev; + platform_set_drvdata(pdev, priv); + + irq_num = platform_get_irq(pdev, 0); + if (irq_num < 0) { + dev_err(&pdev->dev, "no irq resource for spacc\n"); + err = -ENXIO; + goto free_ddt_mem_pool; + } + + /* Determine configured maximum message length. */ + priv->max_msg_len = priv->spacc.config.max_msg_size; + + if (devm_request_irq(&pdev->dev, irq_num, spacc_irq_handler, + IRQF_SHARED, dev_name(&pdev->dev), + &pdev->dev)) { + dev_err(&pdev->dev, "failed to request IRQ\n"); + err = -EBUSY; + goto err_tasklet_kill; + } + + priv->spacc.irq_cb_stat = spacc_stat_process; + priv->spacc.irq_cb_cmdx = spacc_cmd_process; + oldmode = priv->spacc.op_mode; + priv->spacc.op_mode = SPACC_OP_MODE_IRQ; + + spacc_irq_stat_enable(&priv->spacc, 1); + spacc_irq_cmdx_enable(&priv->spacc, 0, 1); + spacc_irq_stat_wd_disable(&priv->spacc); + spacc_irq_glbl_enable(&priv->spacc); + + +#if IS_ENABLED(CONFIG_CRYPTO_DEV_SPACC_AUTODETECT) + err = spacc_autodetect(&priv->spacc); + if (err < 0) { + spacc_irq_glbl_disable(&priv->spacc); + goto err_tasklet_kill; + } +#else + err = spacc_static_config(&priv->spacc); + if (err < 0) { + spacc_irq_glbl_disable(&priv->spacc); + goto err_tasklet_kill; + } +#endif + + priv->spacc.op_mode = oldmode; + + if (priv->spacc.op_mode == SPACC_OP_MODE_IRQ) { + priv->spacc.irq_cb_stat = spacc_stat_process; + priv->spacc.irq_cb_cmdx = spacc_cmd_process; + + spacc_irq_stat_enable(&priv->spacc, 1); + spacc_irq_cmdx_enable(&priv->spacc, 0, 1); + spacc_irq_glbl_enable(&priv->spacc); + } else { + priv->spacc.irq_cb_stat = spacc_stat_process; + priv->spacc.irq_cb_stat_wd = spacc_stat_process; + + spacc_irq_stat_enable(&priv->spacc, + priv->spacc.config.ideal_stat_level); + + spacc_irq_cmdx_disable(&priv->spacc, 0); + spacc_irq_stat_wd_enable(&priv->spacc); + spacc_irq_glbl_enable(&priv->spacc); + + /* enable the wd by setting the wd_timer = 100000 */ + spacc_set_wd_count(&priv->spacc, + priv->spacc.config.wd_timer = + priv->spacc.config.timer); + } + + /* unlock normal*/ + if (priv->spacc.config.is_secure_port) { + u32 t; + + t = readl(baseaddr + SPACC_REG_SECURE_CTRL); + t &= ~(1UL << 31); + writel(t, baseaddr + SPACC_REG_SECURE_CTRL); + } + + /* unlock device by default */ + writel(0, baseaddr + SPACC_REG_SECURE_CTRL); + + return err; + +err_tasklet_kill: + tasklet_kill(&priv->pop_jobs); + spacc_fini(&priv->spacc); + +free_ddt_mem_pool: + pdu_mem_deinit(&pdev->dev); + + return err; +} + +static void spacc_unregister_algs(void) +{ +#if IS_ENABLED(CONFIG_CRYPTO_DEV_SPACC_HASH) + spacc_unregister_hash_algs(); +#endif +#if IS_ENABLED(CONFIG_CRYPTO_DEV_SPACC_AEAD) + spacc_unregister_aead_algs(); +#endif +#if IS_ENABLED(CONFIG_CRYPTO_DEV_SPACC_CIPHER) + spacc_unregister_cipher_algs(); +#endif +} + +static const struct of_device_id snps_spacc_id[] = { + {.compatible = "snps-dwc-spacc" }, + { /*sentinel */ } +}; + +MODULE_DEVICE_TABLE(of, snps_spacc_id); + +static int spacc_crypto_probe(struct platform_device *pdev) +{ + int rc; + + rc = spacc_probe(pdev, snps_spacc_id); + if (rc < 0) + goto err; + + spacc_pdev[0] = pdev; + +#if IS_ENABLED(CONFIG_CRYPTO_DEV_SPACC_HASH) + rc = probe_hashes(pdev); + if (rc < 0) + goto err; +#endif + +#if IS_ENABLED(CONFIG_CRYPTO_DEV_SPACC_CIPHER) + rc = probe_ciphers(pdev); + if (rc < 0) + goto err; +#endif + +#if IS_ENABLED(CONFIG_CRYPTO_DEV_SPACC_AEAD) + rc = probe_aeads(pdev); + if (rc < 0) + goto err; +#endif + + return 0; +err: + spacc_unregister_algs(); + + return rc; +} + +static int spacc_crypto_remove(struct platform_device *pdev) +{ + spacc_unregister_algs(); + spacc_remove(pdev); + + return 0; +} + +static struct platform_driver spacc_driver = { + .probe = spacc_crypto_probe, + .remove = spacc_crypto_remove, + .driver = { + .name = "spacc", + .of_match_table = of_match_ptr(snps_spacc_id), + .owner = THIS_MODULE, + }, +}; + +module_platform_driver(spacc_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Synopsys, Inc."); diff --git a/drivers/crypto/dwc-spacc/spacc_device.h b/drivers/crypto/dwc-spacc/spacc_device.h new file mode 100644 index 000000000000..7e8c22057212 --- /dev/null +++ b/drivers/crypto/dwc-spacc/spacc_device.h @@ -0,0 +1,236 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef SPACC_DEVICE_H_ +#define SPACC_DEVICE_H_ + +#include +#include +#include +#include +#include "spacc_core.h" + +#define MODE_TAB_AEAD(_name, _ciph, _hash, _hashlen, _ivlen, _blocklen) \ + .name = _name, .aead = { .ciph = _ciph, .hash = _hash }, \ + .hashlen = _hashlen, .ivlen = _ivlen, .blocklen = _blocklen + +/* Helper macros for initializing the hash/cipher tables. */ +#define MODE_TAB_COMMON(_name, _id_name, _blocklen) \ + .name = _name, .id = CRYPTO_MODE_##_id_name, .blocklen = _blocklen + +#define MODE_TAB_HASH(_name, _id_name, _hashlen, _blocklen) \ + MODE_TAB_COMMON(_name, _id_name, _blocklen), \ + .hashlen = _hashlen, .testlen = _hashlen + +#define MODE_TAB_CIPH(_name, _id_name, _ivlen, _blocklen) \ + MODE_TAB_COMMON(_name, _id_name, _blocklen), \ + .ivlen = _ivlen + +#define MODE_TAB_HASH_XCBC 0x8000 + +/* Max # of SPAcc devices to look at in our CAPI driver...*/ +#define ELP_CAPI_MAX_DEV 8 + +#define SPACC_MAX_DIGEST_SIZE 64 +#define SPACC_MAX_KEY_SIZE 32 +#define SPACC_MAX_IV_SIZE 16 + +#define SPACC_DMA_ALIGN 4 +#define SPACC_DMA_BOUNDARY 0x10000 + +/* flag means the IV is computed from setkey and crypt*/ +#define SPACC_MANGLE_IV_FLAG 0x8000 + +/* we're doing a CTR mangle (for RFC3686/IPsec)*/ +#define SPACC_MANGLE_IV_RFC3686 0x0100 + +/* we're doing GCM */ +#define SPACC_MANGLE_IV_RFC4106 0x0200 + +/* we're doing GMAC */ +#define SPACC_MANGLE_IV_RFC4543 0x0300 + +/* we're doing CCM */ +#define SPACC_MANGLE_IV_RFC4309 0x0400 + +/* we're doing SM4 GCM/CCM */ +#define SPACC_MANGLE_IV_RFC8998 0x0500 + +#define CRYPTO_MODE_AES_CTR_RFC3686 (CRYPTO_MODE_AES_CTR \ + | SPACC_MANGLE_IV_FLAG \ + | SPACC_MANGLE_IV_RFC3686) +#define CRYPTO_MODE_AES_GCM_RFC4106 (CRYPTO_MODE_AES_GCM \ + | SPACC_MANGLE_IV_FLAG \ + | SPACC_MANGLE_IV_RFC4106) +#define CRYPTO_MODE_AES_GCM_RFC4543 (CRYPTO_MODE_AES_GCM \ + | SPACC_MANGLE_IV_FLAG \ + | SPACC_MANGLE_IV_RFC4543) +#define CRYPTO_MODE_AES_CCM_RFC4309 (CRYPTO_MODE_AES_CCM \ + | SPACC_MANGLE_IV_FLAG \ + | SPACC_MANGLE_IV_RFC4309) +#define CRYPTO_MODE_SM4_GCM_RFC8998 (CRYPTO_MODE_SM4_GCM) +#define CRYPTO_MODE_SM4_CCM_RFC8998 (CRYPTO_MODE_SM4_CCM) + +struct spacc_crypto_ctx { + struct device *dev; + + spinlock_t lock; + struct list_head jobs; + int handle, mode, auth_size, key_len; + unsigned char *cipher_key; + + /* + * Indicates that the H/W context has been setup and can be used for + * crypto; otherwise, the software fallback will be used. + */ + bool ctx_valid; + unsigned int flag_ppp; + + /* salt used for rfc3686/givencrypt mode */ + unsigned char csalt[16]; + u8 ipad[128] __aligned(sizeof(u32)); + u8 digest_ctx_buf[128] __aligned(sizeof(u32)); + u8 ppp_buffer[128] __aligned(sizeof(u32)); + + /* Save keylen from setkey */ + int keylen; + u8 key[256]; + int zero_key; + unsigned char *ppp_sgl_buff; + struct scatterlist *ppp_sgl; + + union{ + struct crypto_ahash *hash; + struct crypto_aead *aead; + struct crypto_skcipher *cipher; + } fb; +}; + +struct spacc_crypto_reqctx { + struct pdu_ddt src, dst; + void *digest_buf, *iv_buf; + dma_addr_t digest_dma, iv_dma; + int fulliv_nents, ptext_nents, iv_nents; + int dst_nents, assoc_nents, src_nents; + int total_nents, single_shot, small_pck, cur_part_pck, final_part_pck; + int encrypt_op, mode; + unsigned int head_sg, tail_sg, rem_len, rem_nents, first_ppp_chunk; + unsigned int crypt_len; + + struct aead_cb_data { + int new_handle; + struct spacc_crypto_ctx *tctx; + struct spacc_crypto_reqctx *ctx; + struct aead_request *req; + struct spacc_device *spacc; + } cb; + + struct ahash_cb_data { + int new_handle; + struct spacc_crypto_ctx *tctx; + struct spacc_crypto_reqctx *ctx; + struct ahash_request *req; + struct spacc_device *spacc; + } acb; + + struct cipher_cb_data { + int new_handle; + struct spacc_crypto_ctx *tctx; + struct spacc_crypto_reqctx *ctx; + struct skcipher_request *req; + struct spacc_device *spacc; + } ccb; + + union { + struct ahash_request hash_req; + struct skcipher_request cipher_req; + struct aead_request aead_req; + } fb; +}; + +struct mode_tab { + char name[128]; + + int valid; + + /* mode ID used in hash/cipher mode but not aead*/ + int id; + + /* ciph/hash mode used in aead */ + struct { + int ciph, hash; + } aead; + + unsigned int hashlen, ivlen, blocklen, keylen[3]; + unsigned int keylen_mask, testlen; + unsigned int chunksize, walksize, min_keysize, max_keysize; + + bool sw_fb; + + union { + unsigned char hash_test[SPACC_MAX_DIGEST_SIZE]; + unsigned char ciph_test[3][2 * SPACC_MAX_IV_SIZE]; + }; +}; + +struct spacc_alg { + struct mode_tab *mode; + unsigned int keylen_mask; + + struct device *dev[ELP_CAPI_MAX_DEV + 1]; + + struct list_head list; + struct crypto_alg *calg; + struct crypto_tfm *tfm; + + union { + struct ahash_alg hash; + struct aead_alg aead; + struct skcipher_alg skcipher; + } alg; +}; + +static inline const struct spacc_alg *spacc_tfm_ahash(struct crypto_tfm *tfm) +{ + const struct crypto_alg *calg = tfm->__crt_alg; + + if ((calg->cra_flags & CRYPTO_ALG_TYPE_MASK) == CRYPTO_ALG_TYPE_AHASH) + return container_of(calg, struct spacc_alg, alg.hash.halg.base); + + return NULL; +} + +static inline const struct spacc_alg *spacc_tfm_skcipher(struct crypto_tfm *tfm) +{ + const struct crypto_alg *calg = tfm->__crt_alg; + + if ((calg->cra_flags & CRYPTO_ALG_TYPE_MASK) == + CRYPTO_ALG_TYPE_SKCIPHER) + return container_of(calg, struct spacc_alg, alg.skcipher.base); + + return NULL; +} + +static inline const struct spacc_alg *spacc_tfm_aead(struct crypto_tfm *tfm) +{ + const struct crypto_alg *calg = tfm->__crt_alg; + + if ((calg->cra_flags & CRYPTO_ALG_TYPE_MASK) == CRYPTO_ALG_TYPE_AEAD) + return container_of(calg, struct spacc_alg, alg.aead.base); + + return NULL; +} + +int probe_hashes(struct platform_device *spacc_pdev); +int spacc_unregister_hash_algs(void); + +int probe_aeads(struct platform_device *spacc_pdev); +int spacc_unregister_aead_algs(void); + +int probe_ciphers(struct platform_device *spacc_pdev); +int spacc_unregister_cipher_algs(void); + +int spacc_probe(struct platform_device *pdev, + const struct of_device_id snps_spacc_id[]); + +irqreturn_t spacc_irq_handler(int irq, void *dev); +#endif diff --git a/drivers/crypto/dwc-spacc/spacc_hal.c b/drivers/crypto/dwc-spacc/spacc_hal.c new file mode 100644 index 000000000000..9ee7c555daeb --- /dev/null +++ b/drivers/crypto/dwc-spacc/spacc_hal.c @@ -0,0 +1,367 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include +#include "spacc_hal.h" + +static struct dma_pool *ddt_pool, *ddt16_pool, *ddt4_pool; +static struct device *ddt_device; + +#define PDU_REG_SPACC_VERSION 0x00180UL +#define PDU_REG_SPACC_CONFIG 0x00184UL +#define PDU_REG_SPACC_CONFIG2 0x00190UL +#define PDU_REG_SPACC_IV_OFFSET 0x00040UL +#define PDU_REG_PDU_CONFIG 0x00188UL +#define PDU_REG_SECURE_LOCK 0x001C0UL + +int pdu_get_version(void __iomem *dev, struct pdu_info *inf) +{ + unsigned long tmp; + + if (!inf) + return -1; + + memset(inf, 0, sizeof(*inf)); + tmp = readl(dev + PDU_REG_SPACC_VERSION); + + /* Read the SPAcc version block this tells us the revision, + * project, and a few other feature bits + * + * layout for v6.5+ + */ + inf->spacc_version = (struct spacc_version_block) { + .minor = SPACC_ID_MINOR(tmp), + .major = SPACC_ID_MAJOR(tmp), + .version = (SPACC_ID_MAJOR(tmp) << 4) | SPACC_ID_MINOR(tmp), + .qos = SPACC_ID_QOS(tmp), + .is_spacc = SPACC_ID_TYPE(tmp) == SPACC_TYPE_SPACCQOS, + .is_pdu = SPACC_ID_TYPE(tmp) == SPACC_TYPE_PDU, + .aux = SPACC_ID_AUX(tmp), + .vspacc_idx = SPACC_ID_VIDX(tmp), + .partial = SPACC_ID_PARTIAL(tmp), + .project = SPACC_ID_PROJECT(tmp), + }; + + /* try to autodetect */ + writel(0x80000000, dev + PDU_REG_SPACC_IV_OFFSET); + + if (readl(dev + PDU_REG_SPACC_IV_OFFSET) == 0x80000000) + inf->spacc_version.ivimport = 1; + else + inf->spacc_version.ivimport = 0; + + + /* Read the SPAcc config block (v6.5+) which tells us how many + * contexts there are and context page sizes + * this register is only available in v6.5 and up + */ + tmp = readl(dev + PDU_REG_SPACC_CONFIG); + inf->spacc_config = (struct spacc_config_block) { + SPACC_CFG_CTX_CNT(tmp), + SPACC_CFG_VSPACC_CNT(tmp), + SPACC_CFG_CIPH_CTX_SZ(tmp), + SPACC_CFG_HASH_CTX_SZ(tmp), + SPACC_CFG_DMA_TYPE(tmp), + 0, 0, 0, 0 + }; + + /* CONFIG2 only present in v6.5+ cores */ + tmp = readl(dev + PDU_REG_SPACC_CONFIG2); + if (inf->spacc_version.qos) { + inf->spacc_config.cmd0_fifo_depth = + SPACC_CFG_CMD0_FIFO_QOS(tmp); + inf->spacc_config.cmd1_fifo_depth = + SPACC_CFG_CMD1_FIFO(tmp); + inf->spacc_config.cmd2_fifo_depth = + SPACC_CFG_CMD2_FIFO(tmp); + inf->spacc_config.stat_fifo_depth = + SPACC_CFG_STAT_FIFO_QOS(tmp); + } else { + inf->spacc_config.cmd0_fifo_depth = + SPACC_CFG_CMD0_FIFO(tmp); + inf->spacc_config.stat_fifo_depth = + SPACC_CFG_STAT_FIFO(tmp); + } + + /* only read PDU config if it's actually a PDU engine */ + if (inf->spacc_version.is_pdu) { + tmp = readl(dev + PDU_REG_PDU_CONFIG); + inf->pdu_config = (struct pdu_config_block) + {SPACC_PDU_CFG_MINOR(tmp), + SPACC_PDU_CFG_MAJOR(tmp)}; + + /* unlock all cores by default */ + writel(0, dev + PDU_REG_SECURE_LOCK); + } + + return 0; +} + +void pdu_to_dev(void __iomem *addr_, uint32_t *src, unsigned long nword) +{ + void __iomem *addr = addr_; + + while (nword--) { + writel(*src++, addr); + addr += 4; + } +} + +void pdu_from_dev(u32 *dst, void __iomem *addr_, unsigned long nword) +{ + void __iomem *addr = addr_; + + while (nword--) { + *dst++ = readl(addr); + addr += 4; + } +} + +static void pdu_to_dev_big(void __iomem *addr_, const unsigned char *src, + unsigned long nword) +{ + unsigned long v; + void __iomem *addr = addr_; + + while (nword--) { + v = 0; + v = (v << 8) | ((unsigned long)*src++); + v = (v << 8) | ((unsigned long)*src++); + v = (v << 8) | ((unsigned long)*src++); + v = (v << 8) | ((unsigned long)*src++); + writel(v, addr); + addr += 4; + } +} + +static void pdu_from_dev_big(unsigned char *dst, void __iomem *addr_, + unsigned long nword) +{ + unsigned long v; + void __iomem *addr = addr_; + + while (nword--) { + v = readl(addr); + addr += 4; + *dst++ = (v >> 24) & 0xFF; v <<= 8; + *dst++ = (v >> 24) & 0xFF; v <<= 8; + *dst++ = (v >> 24) & 0xFF; v <<= 8; + *dst++ = (v >> 24) & 0xFF; v <<= 8; + } +} + +static void pdu_to_dev_little(void __iomem *addr_, const unsigned char *src, + unsigned long nword) +{ + unsigned long v; + void __iomem *addr = addr_; + + while (nword--) { + v = 0; + v = (v >> 8) | ((unsigned long)*src++ << 24UL); + v = (v >> 8) | ((unsigned long)*src++ << 24UL); + v = (v >> 8) | ((unsigned long)*src++ << 24UL); + v = (v >> 8) | ((unsigned long)*src++ << 24UL); + writel(v, addr); + addr += 4; + } +} + +static void pdu_from_dev_little(unsigned char *dst, void __iomem *addr_, unsigned long + nword) +{ + unsigned long v; + void __iomem *addr = addr_; + + while (nword--) { + v = readl(addr); + addr += 4; + *dst++ = v & 0xFF; v >>= 8; + *dst++ = v & 0xFF; v >>= 8; + *dst++ = v & 0xFF; v >>= 8; + *dst++ = v & 0xFF; v >>= 8; + } +} + +void pdu_to_dev_s(void __iomem *addr, const unsigned char *src, + unsigned long nword, int endian) +{ + if (endian) + pdu_to_dev_big(addr, src, nword); + else + pdu_to_dev_little(addr, src, nword); +} + +void pdu_from_dev_s(unsigned char *dst, void __iomem *addr, + unsigned long nword, int endian) +{ + if (endian) + pdu_from_dev_big(dst, addr, nword); + else + pdu_from_dev_little(dst, addr, nword); +} + +void pdu_io_cached_write(void __iomem *addr, unsigned long val, + uint32_t *cache) +{ + if (*cache == val) { +#ifdef CONFIG_CRYPTO_DEV_SPACC_DEBUG_TRACE_IO + pr_debug("PDU: write %.8lx -> %p (cached)\n", val, addr); +#endif + return; + } + + *cache = val; + writel(val, addr); +} + +struct device *get_ddt_device(void) +{ + return ddt_device; +} + +/* Platform specific DDT routines */ + +/* create a DMA pool for DDT entries this should help from splitting + * pages for DDTs which by default are 520 bytes long meaning we would + * otherwise waste 3576 bytes per DDT allocated... + * we also maintain a smaller table of 4 entries common for simple jobs + * which uses 480 fewer bytes of DMA memory. + * and for good measure another table for 16 entries saving 384 bytes + */ +int pdu_mem_init(void *device) +{ + if (ddt_device) + return 0; /* Already setup */ + + ddt_device = device; + ddt_pool = dma_pool_create("spaccddt", device, (PDU_MAX_DDT + 1) * 8, + 8, 0); /* max of 64 DDT entries */ + + if (!ddt_pool) + return -1; + +#if PDU_MAX_DDT > 16 + /* max of 16 DDT entries */ + ddt16_pool = dma_pool_create("spaccddt16", device, (16 + 1) * 8, 8, 0); + if (!ddt16_pool) { + dma_pool_destroy(ddt_pool); + return -1; + } +#else + ddt16_pool = ddt_pool; +#endif + /* max of 4 DDT entries */ + ddt4_pool = dma_pool_create("spaccddt4", device, (4 + 1) * 8, 8, 0); + if (!ddt4_pool) { + dma_pool_destroy(ddt_pool); +#if PDU_MAX_DDT > 16 + dma_pool_destroy(ddt16_pool); +#endif + return -1; + } + + return 0; +} + +/* destroy the pool */ +void pdu_mem_deinit(void *device) +{ + /* For now, just skip deinit except for matching device */ + if (device != ddt_device) + return; + + dma_pool_destroy(ddt_pool); + +#if PDU_MAX_DDT > 16 + dma_pool_destroy(ddt16_pool); +#endif + dma_pool_destroy(ddt4_pool); + + ddt_device = NULL; +} + +int pdu_ddt_init(struct pdu_ddt *ddt, unsigned long limit) +{ + /* set the MSB if we want to use an ATOMIC + * allocation required for top half processing + */ + int flag = (limit & 0x80000000); + + limit &= 0x7FFFFFFF; + if (limit + 1 >= SIZE_MAX / 8) { + /* Too big to even compute DDT size */ + return -1; + } else if (limit > PDU_MAX_DDT) { + size_t len = 8 * ((size_t)limit + 1); + + ddt->virt = dma_alloc_coherent(ddt_device, len, &ddt->phys, + flag ? GFP_ATOMIC : GFP_KERNEL); + } else if (limit > 16) { + ddt->virt = dma_pool_alloc(ddt_pool, flag ? GFP_ATOMIC : + GFP_KERNEL, &ddt->phys); + } else if (limit > 4) { + ddt->virt = dma_pool_alloc(ddt16_pool, flag ? GFP_ATOMIC : + GFP_KERNEL, &ddt->phys); + } else { + ddt->virt = dma_pool_alloc(ddt4_pool, flag ? GFP_ATOMIC : + GFP_KERNEL, &ddt->phys); + } + + ddt->idx = 0; + ddt->len = 0; + ddt->limit = limit; + + if (!ddt->virt) + return -1; + +#ifdef CONFIG_CRYPTO_DEV_SPACC_DEBUG_TRACE_DDT + pr_debug(" DDT[%.8lx]: allocated %lu fragments\n", + (unsigned long)ddt->phys, limit); +#endif + + return 0; +} + +int pdu_ddt_add(struct pdu_ddt *ddt, dma_addr_t phys, unsigned long size) +{ +#ifdef CONFIG_CRYPTO_DEV_SPACC_DEBUG_TRACE_DDT + pr_debug(" DDT[%.8lx]: 0x%.8lx size %lu\n", + (unsigned long)ddt->phys, + (unsigned long)phys, size); +#endif + + if (ddt->idx == ddt->limit) + return -1; + + ddt->virt[ddt->idx * 2 + 0] = (uint32_t)phys; + ddt->virt[ddt->idx * 2 + 1] = size; + ddt->virt[ddt->idx * 2 + 2] = 0; + ddt->virt[ddt->idx * 2 + 3] = 0; + ddt->len += size; + ++(ddt->idx); + + return 0; +} + +int pdu_ddt_free(struct pdu_ddt *ddt) +{ + if (ddt->virt) { + if (ddt->limit > PDU_MAX_DDT) { + size_t len = 8 * ((size_t)ddt->limit + 1); + + dma_free_coherent(ddt_device, len, ddt->virt, + ddt->phys); + } else if (ddt->limit > 16) { + dma_pool_free(ddt_pool, ddt->virt, ddt->phys); + } else if (ddt->limit > 4) { + dma_pool_free(ddt16_pool, ddt->virt, ddt->phys); + } else { + dma_pool_free(ddt4_pool, ddt->virt, ddt->phys); + } + + ddt->virt = NULL; + } + + return 0; +} diff --git a/drivers/crypto/dwc-spacc/spacc_hal.h b/drivers/crypto/dwc-spacc/spacc_hal.h new file mode 100644 index 000000000000..8e7de1d8a134 --- /dev/null +++ b/drivers/crypto/dwc-spacc/spacc_hal.h @@ -0,0 +1,113 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef SPACC_HAL_H +#define SPACC_HAL_H + +/* Maximum number of DDT entries allowed*/ +#ifndef PDU_MAX_DDT +#define PDU_MAX_DDT 64 +#endif + +/* Platform Generic */ +#define PDU_IRQ_EN_GLBL BIT(31) +#define PDU_IRQ_EN_VSPACC(x) (1UL << (x)) +#define PDU_IRQ_EN_RNG BIT(16) + +#ifndef SPACC_ID_MINOR + #define SPACC_ID_MINOR(x) ((x) & 0x0F) + #define SPACC_ID_MAJOR(x) (((x) >> 4) & 0x0F) + #define SPACC_ID_QOS(x) (((x) >> 8) & 0x01) + #define SPACC_ID_TYPE(x) (((x) >> 9) & 0x03) + #define SPACC_ID_AUX(x) (((x) >> 11) & 0x01) + #define SPACC_ID_VIDX(x) (((x) >> 12) & 0x07) + #define SPACC_ID_PARTIAL(x) (((x) >> 15) & 0x01) + #define SPACC_ID_PROJECT(x) ((x) >> 16) + + #define SPACC_TYPE_SPACCQOS 0 + #define SPACC_TYPE_PDU 1 + + #define SPACC_CFG_CTX_CNT(x) ((x) & 0x7F) + #define SPACC_CFG_RC4_CTX_CNT(x) (((x) >> 8) & 0x7F) + #define SPACC_CFG_VSPACC_CNT(x) (((x) >> 16) & 0x0F) + #define SPACC_CFG_CIPH_CTX_SZ(x) (((x) >> 20) & 0x07) + #define SPACC_CFG_HASH_CTX_SZ(x) (((x) >> 24) & 0x0F) + #define SPACC_CFG_DMA_TYPE(x) (((x) >> 28) & 0x03) + + #define SPACC_CFG_CMD0_FIFO_QOS(x) (((x) >> 0) & 0x7F) + #define SPACC_CFG_CMD0_FIFO(x) (((x) >> 0) & 0x1FF) + #define SPACC_CFG_CMD1_FIFO(x) (((x) >> 8) & 0x7F) + #define SPACC_CFG_CMD2_FIFO(x) (((x) >> 16) & 0x7F) + #define SPACC_CFG_STAT_FIFO_QOS(x) (((x) >> 24) & 0x7F) + #define SPACC_CFG_STAT_FIFO(x) (((x) >> 16) & 0x1FF) + + #define SPACC_PDU_CFG_MINOR(x) ((x) & 0x0F) + #define SPACC_PDU_CFG_MAJOR(x) (((x) >> 4) & 0x0F) + + #define PDU_SECURE_LOCK_SPACC(x) (x) + #define PDU_SECURE_LOCK_CFG BIT(30) + #define PDU_SECURE_LOCK_GLBL BIT(31) +#endif /* SPACC_ID_MINOR */ + +#define CRYPTO_OK (0) + +struct spacc_version_block { + unsigned int minor, + major, + version, + qos, + is_spacc, + is_pdu, + aux, + vspacc_idx, + partial, + project, + ivimport; +}; + +struct spacc_config_block { + unsigned int num_ctx, + num_vspacc, + ciph_ctx_page_size, + hash_ctx_page_size, + dma_type, + cmd0_fifo_depth, + cmd1_fifo_depth, + cmd2_fifo_depth, + stat_fifo_depth; +}; + +struct pdu_config_block { + unsigned int minor, + major; +}; + +struct pdu_info { + u32 clockrate; + struct spacc_version_block spacc_version; + struct spacc_config_block spacc_config; + struct pdu_config_block pdu_config; +}; + +struct pdu_ddt { + dma_addr_t phys; + u32 *virt; + u32 *virt_orig; + unsigned long idx, limit, len; +}; + +void pdu_io_cached_write(void __iomem *addr, unsigned long val, uint32_t *cache); +void pdu_to_dev(void __iomem *addr, uint32_t *src, unsigned long nword); +void pdu_from_dev(u32 *dst, void __iomem *addr, unsigned long nword); +void pdu_from_dev_s(unsigned char *dst, void __iomem *addr, unsigned long nword, + int endian); +void pdu_to_dev_s(void __iomem *addr, const unsigned char *src, unsigned long nword, + int endian); +struct device *get_ddt_device(void); +int pdu_mem_init(void *device); +void pdu_mem_deinit(void *device); +int pdu_ddt_init(struct pdu_ddt *ddt, unsigned long limit); +int pdu_ddt_add(struct pdu_ddt *ddt, dma_addr_t phys, unsigned long size); +int pdu_ddt_free(struct pdu_ddt *ddt); +int pdu_get_version(void __iomem *dev, struct pdu_info *inf); + +#endif diff --git a/drivers/crypto/dwc-spacc/spacc_interrupt.c b/drivers/crypto/dwc-spacc/spacc_interrupt.c new file mode 100644 index 000000000000..176b3d6be25d --- /dev/null +++ b/drivers/crypto/dwc-spacc/spacc_interrupt.c @@ -0,0 +1,316 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include +#include "spacc_core.h" + +/* Read the IRQ status register and process as needed */ + + +void spacc_disable_int (struct spacc_device *spacc); + +static inline uint32_t _spacc_get_stat_cnt(struct spacc_device *spacc) +{ + u32 fifo; + + if (spacc->config.is_qos) + fifo = SPACC_FIFO_STAT_STAT_CNT_GET_QOS(readl(spacc->regmap + + SPACC_REG_FIFO_STAT)); + else + fifo = SPACC_FIFO_STAT_STAT_CNT_GET(readl(spacc->regmap + + SPACC_REG_FIFO_STAT)); + + return fifo; +} + +static int spacc_pop_packets_ex(struct spacc_device *spacc, int *num_popped, + unsigned long *lock_flag) +{ + int jobs; + int ret = -EINPROGRESS; + struct spacc_job *job = NULL; + u32 cmdstat, swid, spacc_errcode = SPACC_OK; + + *num_popped = 0; + + while ((jobs = _spacc_get_stat_cnt(spacc))) { + while (jobs-- > 0) { + /* write the pop register to get the next job */ + writel(1, spacc->regmap + SPACC_REG_STAT_POP); + cmdstat = readl(spacc->regmap + SPACC_REG_STATUS); + + swid = SPACC_STATUS_SW_ID_GET(cmdstat); + + if (spacc->job_lookup[swid] == SPACC_JOB_IDX_UNUSED) { + ret = -EIO; + goto ERR; + } + + /* find the associated job with popped swid */ + if (swid < 0 || swid >= SPACC_MAX_JOBS) + job = NULL; + else + job = &spacc->job[spacc->job_lookup[swid]]; + + if (!job) { + ret = -EIO; + goto ERR; + } + + /* mark job as done */ + job->job_done = 1; + spacc->job_lookup[swid] = SPACC_JOB_IDX_UNUSED; + spacc_errcode = SPACC_GET_STATUS_RET_CODE(cmdstat); + + switch (spacc_errcode) { + case SPACC_ICVFAIL: + ret = -EBADMSG; + break; + case SPACC_MEMERR: + ret = -EINVAL; + break; + case SPACC_BLOCKERR: + ret = -EINVAL; + break; + case SPACC_SECERR: + ret = -EIO; + break; + case SPACC_OK: + ret = CRYPTO_OK; + break; + default: + pr_debug("Invalid SPAcc Error"); + } + + job->job_err = ret; + + /* + * We're done touching the SPAcc hw, so release the + * lock across the job callback. It must be reacquired + * before continuing to the next iteration. + */ + + if (job->cb) { + spin_unlock_irqrestore(&spacc->lock, + *lock_flag); + job->cb(spacc, job->cbdata); + spin_lock_irqsave(&spacc->lock, + *lock_flag); + } + + (*num_popped)++; + } + } + + if (!*num_popped) + pr_debug(" Failed to pop a single job\n"); + +ERR: + spacc_process_jb(spacc); + + /* reset the WD timer to the original value*/ + if (spacc->op_mode == SPACC_OP_MODE_WD) + spacc_set_wd_count(spacc, spacc->config.wd_timer); + + if (*num_popped && spacc->spacc_notify_jobs) + spacc->spacc_notify_jobs(spacc); + + return ret; +} + +int spacc_pop_packets(struct spacc_device *spacc, int *num_popped) +{ + int err; + unsigned long lock_flag; + + spin_lock_irqsave(&spacc->lock, lock_flag); + err = spacc_pop_packets_ex(spacc, num_popped, &lock_flag); + spin_unlock_irqrestore(&spacc->lock, lock_flag); + + return err; +} + +uint32_t spacc_process_irq(struct spacc_device *spacc) +{ + u32 temp; + int x, cmd_max; + unsigned long lock_flag; + + spin_lock_irqsave(&spacc->lock, lock_flag); + + temp = readl(spacc->regmap + SPACC_REG_IRQ_STAT); + + /* clear interrupt pin and run registered callback */ + if (temp & SPACC_IRQ_STAT_STAT) { + SPACC_IRQ_STAT_CLEAR_STAT(spacc); + if (spacc->op_mode == SPACC_OP_MODE_IRQ) { + spacc->config.fifo_cnt <<= 2; + if (spacc->config.fifo_cnt >= + spacc->config.stat_fifo_depth) + spacc->config.fifo_cnt = + spacc->config.stat_fifo_depth; + + /* update fifo count to allow more stati to pile up*/ + spacc_irq_stat_enable(spacc, spacc->config.fifo_cnt); + /* reenable CMD0 empty interrupt*/ + spacc_irq_cmdx_enable(spacc, 0, 0); + } + + if (spacc->irq_cb_stat) + spacc->irq_cb_stat(spacc); + } + + /* Watchdog IRQ */ + if (spacc->op_mode == SPACC_OP_MODE_WD) { + if (temp & SPACC_IRQ_STAT_STAT_WD) { + if (++spacc->wdcnt == SPACC_WD_LIMIT) { + /* this happens when you get too many IRQs that + * go unanswered + */ + spacc_irq_stat_wd_disable(spacc); + /* we set the STAT CNT to 1 so that every job + * generates an IRQ now + */ + spacc_irq_stat_enable(spacc, 1); + spacc->op_mode = SPACC_OP_MODE_IRQ; + } else if (spacc->config.wd_timer < (0xFFFFFFUL >> 4)) { + /* if the timer isn't too high lets bump it up + * a bit so as to give the IRQ a chance to + * reply + */ + spacc_set_wd_count(spacc, + spacc->config.wd_timer << 4); + } + + SPACC_IRQ_STAT_CLEAR_STAT_WD(spacc); + if (spacc->irq_cb_stat_wd) + spacc->irq_cb_stat_wd(spacc); + } + } + + if (spacc->op_mode == SPACC_OP_MODE_IRQ) { + cmd_max = (spacc->config.is_qos ? SPACC_CMDX_MAX_QOS : + SPACC_CMDX_MAX); + for (x = 0; x < cmd_max; x++) { + if (temp & SPACC_IRQ_STAT_CMDX(x)) { + spacc->config.fifo_cnt = 1; + /* disable CMD0 interrupt since STAT=1 */ + spacc_irq_cmdx_disable(spacc, x); + spacc_irq_stat_enable(spacc, + spacc->config.fifo_cnt); + + SPACC_IRQ_STAT_CLEAR_CMDX(spacc, x); + /* run registered callback */ + if (spacc->irq_cb_cmdx) + spacc->irq_cb_cmdx(spacc, x); + } + } + } + + spin_unlock_irqrestore(&spacc->lock, lock_flag); + + return temp; +} + +void spacc_set_wd_count(struct spacc_device *spacc, uint32_t val) +{ + writel(val, spacc->regmap + SPACC_REG_STAT_WD_CTRL); +} + +/* cmdx and cmdx_cnt depend on HW config + * cmdx can be 0, 1 or 2 + * cmdx_cnt must be 2^6 or less + */ +void spacc_irq_cmdx_enable(struct spacc_device *spacc, int cmdx, int cmdx_cnt) +{ + u32 temp; + + /* read the reg, clear the bit range and set the new value */ + temp = readl(spacc->regmap + SPACC_REG_IRQ_CTRL) & + (~SPACC_IRQ_CTRL_CMDX_CNT_MASK(cmdx)); + temp |= SPACC_IRQ_CTRL_CMDX_CNT_SET(cmdx, cmdx_cnt); + + writel(temp | SPACC_IRQ_CTRL_CMDX_CNT_SET(cmdx, cmdx_cnt), + spacc->regmap + SPACC_REG_IRQ_CTRL); + + writel(readl(spacc->regmap + SPACC_REG_IRQ_EN) | SPACC_IRQ_EN_CMD(cmdx), + spacc->regmap + SPACC_REG_IRQ_EN); +} + +void spacc_irq_cmdx_disable(struct spacc_device *spacc, int cmdx) +{ + writel(readl(spacc->regmap + SPACC_REG_IRQ_EN) & + (~SPACC_IRQ_EN_CMD(cmdx)), spacc->regmap + SPACC_REG_IRQ_EN); +} + +void spacc_irq_stat_enable(struct spacc_device *spacc, int stat_cnt) +{ + u32 temp; + + temp = readl(spacc->regmap + SPACC_REG_IRQ_CTRL); + if (spacc->config.is_qos) { + temp &= (~SPACC_IRQ_CTRL_STAT_CNT_MASK_QOS); + temp |= SPACC_IRQ_CTRL_STAT_CNT_SET_QOS(stat_cnt); + } else { + temp &= (~SPACC_IRQ_CTRL_STAT_CNT_MASK); + temp |= SPACC_IRQ_CTRL_STAT_CNT_SET(stat_cnt); + } + + writel(temp, spacc->regmap + SPACC_REG_IRQ_CTRL); + writel(readl(spacc->regmap + SPACC_REG_IRQ_EN) | SPACC_IRQ_EN_STAT, + spacc->regmap + SPACC_REG_IRQ_EN); +} + +void spacc_irq_stat_disable(struct spacc_device *spacc) +{ + writel(readl(spacc->regmap + SPACC_REG_IRQ_EN) & (~SPACC_IRQ_EN_STAT), + spacc->regmap + SPACC_REG_IRQ_EN); +} + +void spacc_irq_stat_wd_enable(struct spacc_device *spacc) +{ + writel(readl(spacc->regmap + SPACC_REG_IRQ_EN) | SPACC_IRQ_EN_STAT_WD, + spacc->regmap + SPACC_REG_IRQ_EN); +} + +void spacc_irq_stat_wd_disable(struct spacc_device *spacc) +{ + writel(readl(spacc->regmap + SPACC_REG_IRQ_EN) & + (~SPACC_IRQ_EN_STAT_WD), spacc->regmap + SPACC_REG_IRQ_EN); +} + +void spacc_irq_glbl_enable(struct spacc_device *spacc) +{ + writel(readl(spacc->regmap + SPACC_REG_IRQ_EN) | SPACC_IRQ_EN_GLBL, + spacc->regmap + SPACC_REG_IRQ_EN); +} + +void spacc_irq_glbl_disable(struct spacc_device *spacc) +{ + writel(readl(spacc->regmap + SPACC_REG_IRQ_EN) & (~SPACC_IRQ_EN_GLBL), + spacc->regmap + SPACC_REG_IRQ_EN); +} + +void spacc_disable_int (struct spacc_device *spacc) +{ + writel(0, spacc->regmap + SPACC_REG_IRQ_EN); +} + +/* a function to run callbacks in the IRQ handler */ +irqreturn_t spacc_irq_handler(int irq, void *dev) +{ + struct spacc_priv *priv = platform_get_drvdata(to_platform_device(dev)); + struct spacc_device *spacc = &priv->spacc; + + if (spacc->config.oldtimer != spacc->config.timer) { + priv->spacc.config.wd_timer = spacc->config.timer; + spacc_set_wd_count(&priv->spacc, priv->spacc.config.wd_timer); + spacc->config.oldtimer = spacc->config.timer; + } + + /* check irq flags and process as required */ + if (!spacc_process_irq(spacc)) + return IRQ_NONE; + + return IRQ_HANDLED; +} diff --git a/drivers/crypto/dwc-spacc/spacc_manager.c b/drivers/crypto/dwc-spacc/spacc_manager.c new file mode 100644 index 000000000000..3b26b27a998f --- /dev/null +++ b/drivers/crypto/dwc-spacc/spacc_manager.c @@ -0,0 +1,650 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include "spacc_core.h" + +#define MIN(x, y) (((x) < (y)) ? (x) : (y)) + +/* prevent reading past the end of the buffer */ +static void read_from_buf(unsigned char *dst, unsigned char *src, + int off, int n, int max) +{ + if (!dst) + return; + + while (off < max && n) { + *dst++ = src[off++]; + --n; + } +} + +static void write_to_buf(unsigned char *dst, const unsigned char *src, + int off, int n, int len) +{ + if (!src) + return; + + while (n && (off < len)) { + dst[off++] = *src++; + --n; + } +} + +/* This function is not meant to be called directly, + * it should be called from the job manager + */ +static int spacc_ctx_request(struct spacc_device *spacc, + int ctx_id, int ncontig) +{ + int ret; + int x, y, count; + unsigned long lock_flag; + + if (!spacc) + return -1; + + if (ctx_id > spacc->config.num_ctx) + return -1; + + if (ncontig < 1 || ncontig > spacc->config.num_ctx) + return -1; + + ret = CRYPTO_OK; + + spin_lock_irqsave(&spacc->ctx_lock, lock_flag); + /* allocating scheme, look for contiguous contexts. Free contexts have + * a ref_cnt of 0. + * If specific ctx_id is requested, + * test the ncontig and then bump the ref_cnt + */ + if (ctx_id != -1) { + if ((&spacc->ctx[ctx_id])->ncontig != ncontig - 1) + ret = -1; + } else { + /* check to see if ncontig are free + * loop over all available contexts to find the first + * ncontig empty ones + */ + for (x = 0; x <= (spacc->config.num_ctx - ncontig); ) { + count = ncontig; + while (count) { + if ((&spacc->ctx[x + count - 1])->ref_cnt != 0) { + /* incr x to past failed count + * location + */ + x = x + count; + break; + } + count--; + } + if (count != 0) { + ret = -1; + /* test next x */ + } else { + ctx_id = x; + ret = CRYPTO_OK; + break; + } + } + } + + if (ret == CRYPTO_OK) { + /* ctx_id is good so mark used */ + for (y = 0; y < ncontig; y++) + (&spacc->ctx[ctx_id + y])->ref_cnt++; + (&spacc->ctx[ctx_id])->ncontig = ncontig - 1; + } else { + ctx_id = -1; + } + + spin_unlock_irqrestore(&spacc->ctx_lock, lock_flag); + + return ctx_id; +} + +static int spacc_ctx_release(struct spacc_device *spacc, int ctx_id) +{ + int y; + int ncontig; + unsigned long lock_flag; + + if (ctx_id < 0 || ctx_id > spacc->config.num_ctx) + return -EINVAL; + + spin_lock_irqsave(&spacc->ctx_lock, lock_flag); + /* release the base context and contiguous block */ + ncontig = (&spacc->ctx[ctx_id])->ncontig; + for (y = 0; y <= ncontig; y++) { + if ((&spacc->ctx[ctx_id + y])->ref_cnt > 0) + (&spacc->ctx[ctx_id + y])->ref_cnt--; + } + + if ((&spacc->ctx[ctx_id])->ref_cnt == 0) { + (&spacc->ctx[ctx_id])->ncontig = 0; +#ifdef CONFIG_CRYPTO_DEV_SPACC_SECURE_MODE + /* TODO: This driver works in harmony with "normal" kernel + * processes so we release the context all the time + * normally this would be done from a "secure" kernel process + * (trustzone/etc). This hack is so that SPACC.0 + * cores can both use the same context space. + */ + writel(ctx_id, spacc->regmap + SPACC_REG_SECURE_RELEASE); +#endif + } + + spin_unlock_irqrestore(&spacc->ctx_lock, lock_flag); + + return CRYPTO_OK; +} + +/* Job manager: This will reset all job data, pointers, etc */ +void spacc_job_init_all(struct spacc_device *spacc) +{ + int x; + struct spacc_job *job; + + for (x = 0; x < (SPACC_MAX_JOBS); x++) { + job = &spacc->job[x]; + memset(job, 0, sizeof(struct spacc_job)); + + job->job_swid = SPACC_JOB_IDX_UNUSED; + job->job_used = SPACC_JOB_IDX_UNUSED; + spacc->job_lookup[x] = SPACC_JOB_IDX_UNUSED; + } +} + +/* get a new job id and use a specific ctx_idx or -1 for a new one */ +int spacc_job_request(struct spacc_device *spacc, int ctx_idx) +{ + int x, ret; + struct spacc_job *job; + unsigned long lock_flag; + + if (!spacc) + return -1; + + spin_lock_irqsave(&spacc->lock, lock_flag); + + /* find the first available job id */ + for (x = 0; x < SPACC_MAX_JOBS; x++) { + job = &spacc->job[x]; + if (job->job_used == SPACC_JOB_IDX_UNUSED) { + job->job_used = x; + break; + } + } + + if (x == SPACC_MAX_JOBS) { + ret = -1; + } else { + /* associate a single context to go with job */ + ret = spacc_ctx_request(spacc, ctx_idx, 1); + if (ret != -1) { + job->ctx_idx = ret; + ret = x; + } + } + + spin_unlock_irqrestore(&spacc->lock, lock_flag); + + return ret; +} + +int spacc_job_release(struct spacc_device *spacc, int job_idx) +{ + int ret; + struct spacc_job *job; + unsigned long lock_flag; + + if (!spacc) + return -EINVAL; + + if (job_idx < 0 || job_idx >= SPACC_MAX_JOBS) + return -ENXIO; + + spin_lock_irqsave(&spacc->lock, lock_flag); + + job = &spacc->job[job_idx]; + /* release context that goes with job */ + ret = spacc_ctx_release(spacc, job->ctx_idx); + job->ctx_idx = SPACC_CTX_IDX_UNUSED; + job->job_used = SPACC_JOB_IDX_UNUSED; + /* disable any callback*/ + job->cb = NULL; + + /* NOTE: this leaves ctrl data in memory */ + spin_unlock_irqrestore(&spacc->lock, lock_flag); + + return ret; +} + +int spacc_handle_release(struct spacc_device *spacc, int job_idx) +{ + int ret = 0; + struct spacc_job *job; + unsigned long lock_flag; + + if (!spacc) + return -EINVAL; + + if (job_idx < 0 || job_idx >= SPACC_MAX_JOBS) + return -ENXIO; + + spin_lock_irqsave(&spacc->lock, lock_flag); + + job = &spacc->job[job_idx]; + job->job_used = SPACC_JOB_IDX_UNUSED; + job->cb = NULL; /* disable any callback*/ + + /* NOTE: this leaves ctrl data in memory */ + spin_unlock_irqrestore(&spacc->lock, lock_flag); + + return ret; +} + +/* Return a context structure for a job idx or null if invalid */ +struct spacc_ctx *context_lookup_by_job(struct spacc_device *spacc, int job_idx) +{ + if (job_idx < 0 || job_idx >= SPACC_MAX_JOBS) + return NULL; + + return &spacc->ctx[(&spacc->job[job_idx])->ctx_idx]; +} + +int spacc_process_jb(struct spacc_device *spacc) +{ + int tail, ret; + + /* are there jobs in the buffer? */ + while (spacc->jb_head != spacc->jb_tail) { + tail = spacc->jb_tail; + + if (spacc->job_buffer[tail].active) { + ret = spacc_packet_enqueue_ddt_ex(spacc, 0, + spacc->job_buffer[tail].job_idx, + spacc->job_buffer[tail].src, + spacc->job_buffer[tail].dst, + spacc->job_buffer[tail].proc_sz, + spacc->job_buffer[tail].aad_offset, + spacc->job_buffer[tail].pre_aad_sz, + spacc->job_buffer[tail].post_aad_sz, + spacc->job_buffer[tail].iv_offset, + spacc->job_buffer[tail].prio); + + if (ret != -EBUSY) + spacc->job_buffer[tail].active = 0; + else + return -1; + } + + tail++; + if (tail == SPACC_MAX_JOB_BUFFERS) + tail = 0; + + spacc->jb_tail = tail; + } + + return 0; +} + +/* Write appropriate context data which depends on operation and mode */ +int spacc_write_context(struct spacc_device *spacc, int job_idx, int op, + const unsigned char *key, int ksz, + const unsigned char *iv, int ivsz) +{ + int buflen; + int ret = CRYPTO_OK; + unsigned char buf[300]; + struct spacc_ctx *ctx = NULL; + struct spacc_job *job = NULL; + + if (job_idx < 0 || job_idx > SPACC_MAX_JOBS) + return -ENXIO; + + job = &spacc->job[job_idx]; + ctx = context_lookup_by_job(spacc, job_idx); + + if (!job || !ctx) + return -EIO; + + switch (op) { + case SPACC_CRYPTO_OPERATION: + /* get page size and then read so we can do a + * read-modify-write cycle + */ + buflen = MIN(sizeof(buf), + (unsigned int)spacc->config.ciph_page_size); + + pdu_from_dev_s(buf, ctx->ciph_key, buflen >> 2, + spacc->config.spacc_endian); + + switch (job->enc_mode) { + case CRYPTO_MODE_SM4_ECB: + case CRYPTO_MODE_SM4_CBC: + case CRYPTO_MODE_SM4_CFB: + case CRYPTO_MODE_SM4_OFB: + case CRYPTO_MODE_SM4_CTR: + case CRYPTO_MODE_SM4_CCM: + case CRYPTO_MODE_SM4_GCM: + case CRYPTO_MODE_SM4_CS1: + case CRYPTO_MODE_SM4_CS2: + case CRYPTO_MODE_SM4_CS3: + case CRYPTO_MODE_AES_ECB: + case CRYPTO_MODE_AES_CBC: + case CRYPTO_MODE_AES_CS1: + case CRYPTO_MODE_AES_CS2: + case CRYPTO_MODE_AES_CS3: + case CRYPTO_MODE_AES_CFB: + case CRYPTO_MODE_AES_OFB: + case CRYPTO_MODE_AES_CTR: + case CRYPTO_MODE_AES_CCM: + case CRYPTO_MODE_AES_GCM: + write_to_buf(buf, key, 0, ksz, buflen); + if (iv) { + unsigned char one[4] = { 0, 0, 0, 1 }; + unsigned long enc1, enc2; + + enc1 = CRYPTO_MODE_AES_GCM; + enc2 = CRYPTO_MODE_SM4_GCM; + + write_to_buf(buf, iv, 32, ivsz, buflen); + if (ivsz == 12 && + (job->enc_mode == enc1 || + job->enc_mode == enc2)) + write_to_buf(buf, one, 11 * 4, 4, + buflen); + } + break; + case CRYPTO_MODE_SM4_F8: + case CRYPTO_MODE_AES_F8: + if (key) { + write_to_buf(buf, key + ksz, 0, ksz, buflen); + write_to_buf(buf, key, 48, ksz, buflen); + } + write_to_buf(buf, iv, 32, 16, buflen); + break; + case CRYPTO_MODE_SM4_XTS: + case CRYPTO_MODE_AES_XTS: + if (key) { + write_to_buf(buf, key, 0, + ksz >> 1, buflen); + write_to_buf(buf, key + (ksz >> 1), 48, + ksz >> 1, buflen); + /* divide by two since that's + * what we program the hardware + */ + ksz = ksz >> 1; + } + write_to_buf(buf, iv, 32, 16, buflen); + break; + case CRYPTO_MODE_MULTI2_ECB: + case CRYPTO_MODE_MULTI2_CBC: + case CRYPTO_MODE_MULTI2_OFB: + case CRYPTO_MODE_MULTI2_CFB: + write_to_buf(buf, key, 0, ksz, buflen); + write_to_buf(buf, iv, 0x28, ivsz, buflen); + if (ivsz <= 8) { + /*default to 128 rounds*/ + unsigned char rounds[4] = { 0, 0, 0, 128}; + + write_to_buf(buf, rounds, 0x30, 4, buflen); + } + break; + case CRYPTO_MODE_3DES_CBC: + case CRYPTO_MODE_3DES_ECB: + case CRYPTO_MODE_DES_CBC: + case CRYPTO_MODE_DES_ECB: + write_to_buf(buf, iv, 0, 8, buflen); + write_to_buf(buf, key, 8, ksz, buflen); + break; + case CRYPTO_MODE_KASUMI_ECB: + case CRYPTO_MODE_KASUMI_F8: + write_to_buf(buf, iv, 16, 8, buflen); + write_to_buf(buf, key, 0, 16, buflen); + break; + case CRYPTO_MODE_SNOW3G_UEA2: + case CRYPTO_MODE_ZUC_UEA3: + write_to_buf(buf, key, 0, 32, buflen); + break; + case CRYPTO_MODE_CHACHA20_STREAM: + case CRYPTO_MODE_CHACHA20_POLY1305: + write_to_buf(buf, key, 0, ksz, buflen); + write_to_buf(buf, iv, 32, ivsz, buflen); + break; + case CRYPTO_MODE_NULL: + break; + } + + if (key) { + job->ckey_sz = SPACC_SET_CIPHER_KEY_SZ(ksz); + job->first_use = 1; + } + pdu_to_dev_s(ctx->ciph_key, buf, buflen >> 2, + spacc->config.spacc_endian); + break; + + case SPACC_HASH_OPERATION: + /* get page size and then read so we can do a + * read-modify-write cycle + */ + buflen = MIN(sizeof(buf), + (u32)spacc->config.hash_page_size); + pdu_from_dev_s(buf, ctx->hash_key, buflen >> 2, + spacc->config.spacc_endian); + + switch (job->hash_mode) { + case CRYPTO_MODE_MAC_XCBC: + case CRYPTO_MODE_MAC_SM4_XCBC: + if (key) { + write_to_buf(buf, key + (ksz - 32), 32, 32, + buflen); + write_to_buf(buf, key, 0, (ksz - 32), + buflen); + job->hkey_sz = SPACC_SET_HASH_KEY_SZ(ksz - 32); + } + break; + case CRYPTO_MODE_HASH_CRC32: + case CRYPTO_MODE_MAC_SNOW3G_UIA2: + case CRYPTO_MODE_MAC_ZUC_UIA3: + if (key) { + write_to_buf(buf, key, 0, ksz, buflen); + job->hkey_sz = SPACC_SET_HASH_KEY_SZ(ksz); + } + break; + case CRYPTO_MODE_MAC_POLY1305: + write_to_buf(buf, key, 0, ksz, buflen); + write_to_buf(buf, iv, 32, ivsz, buflen); + break; + case CRYPTO_MODE_HASH_CSHAKE128: + case CRYPTO_MODE_HASH_CSHAKE256: + /* use "iv" and "key" to */ + /* pass s-string and n-string */ + write_to_buf(buf, iv, 0, ivsz, buflen); + write_to_buf(buf, key, + spacc->config.string_size, ksz, buflen); + break; + case CRYPTO_MODE_MAC_KMAC128: + case CRYPTO_MODE_MAC_KMAC256: + case CRYPTO_MODE_MAC_KMACXOF128: + case CRYPTO_MODE_MAC_KMACXOF256: + /* use "iv" and "key" to pass s-string & key */ + write_to_buf(buf, iv, 0, ivsz, buflen); + write_to_buf(buf, key, + spacc->config.string_size, ksz, buflen); + job->hkey_sz = SPACC_SET_HASH_KEY_SZ(ksz); + break; + default: + if (key) { + job->hkey_sz = SPACC_SET_HASH_KEY_SZ(ksz); + write_to_buf(buf, key, 0, ksz, buflen); + } + } + pdu_to_dev_s(ctx->hash_key, buf, buflen >> 2, + spacc->config.spacc_endian); + break; + default: + ret = -EINVAL; + } + + return ret; +} + +int spacc_read_context(struct spacc_device *spacc, int job_idx, + int op, unsigned char *key, int ksz, + unsigned char *iv, int ivsz) +{ + int buflen; + int ret = CRYPTO_OK; + unsigned char buf[300]; + struct spacc_ctx *ctx = NULL; + struct spacc_job *job = NULL; + + if (job_idx < 0 || job_idx > SPACC_MAX_JOBS) + return -ENXIO; + + job = &spacc->job[job_idx]; + ctx = context_lookup_by_job(spacc, job_idx); + + if (!ctx) + return -EIO; + + switch (op) { + case SPACC_CRYPTO_OPERATION: + buflen = MIN(sizeof(buf), + (u32)spacc->config.ciph_page_size); + pdu_from_dev_s(buf, ctx->ciph_key, buflen >> 2, + spacc->config.spacc_endian); + + switch (job->enc_mode) { + case CRYPTO_MODE_SM4_ECB: + case CRYPTO_MODE_SM4_CBC: + case CRYPTO_MODE_SM4_CFB: + case CRYPTO_MODE_SM4_OFB: + case CRYPTO_MODE_SM4_CTR: + case CRYPTO_MODE_SM4_CCM: + case CRYPTO_MODE_SM4_GCM: + case CRYPTO_MODE_SM4_CS1: + case CRYPTO_MODE_SM4_CS2: + case CRYPTO_MODE_SM4_CS3: + case CRYPTO_MODE_AES_ECB: + case CRYPTO_MODE_AES_CBC: + case CRYPTO_MODE_AES_CS1: + case CRYPTO_MODE_AES_CS2: + case CRYPTO_MODE_AES_CS3: + case CRYPTO_MODE_AES_CFB: + case CRYPTO_MODE_AES_OFB: + case CRYPTO_MODE_AES_CTR: + case CRYPTO_MODE_AES_CCM: + case CRYPTO_MODE_AES_GCM: + read_from_buf(key, buf, 0, ksz, buflen); + read_from_buf(iv, buf, 32, 16, buflen); + break; + case CRYPTO_MODE_CHACHA20_STREAM: + read_from_buf(key, buf, 0, ksz, buflen); + read_from_buf(iv, buf, 32, 16, buflen); + break; + case CRYPTO_MODE_SM4_F8: + case CRYPTO_MODE_AES_F8: + if (key) { + read_from_buf(key + ksz, buf, 0, ksz, buflen); + read_from_buf(key, buf, 48, ksz, buflen); + } + read_from_buf(iv, buf, 32, 16, buflen); + break; + case CRYPTO_MODE_SM4_XTS: + case CRYPTO_MODE_AES_XTS: + if (key) { + read_from_buf(key, buf, 0, ksz >> 1, buflen); + read_from_buf(key + (ksz >> 1), buf, + 48, ksz >> 1, buflen); + } + read_from_buf(iv, buf, 32, 16, buflen); + break; + case CRYPTO_MODE_MULTI2_ECB: + case CRYPTO_MODE_MULTI2_CBC: + case CRYPTO_MODE_MULTI2_OFB: + case CRYPTO_MODE_MULTI2_CFB: + read_from_buf(key, buf, 0, ksz, buflen); + /* Number of rounds at the end of the IV */ + read_from_buf(iv, buf, 0x28, ivsz, buflen); + break; + case CRYPTO_MODE_3DES_CBC: + case CRYPTO_MODE_3DES_ECB: + read_from_buf(iv, buf, 0, 8, buflen); + read_from_buf(key, buf, 8, 24, buflen); + break; + case CRYPTO_MODE_DES_CBC: + case CRYPTO_MODE_DES_ECB: + read_from_buf(iv, buf, 0, 8, buflen); + read_from_buf(key, buf, 8, 8, buflen); + break; + case CRYPTO_MODE_KASUMI_ECB: + case CRYPTO_MODE_KASUMI_F8: + read_from_buf(iv, buf, 16, 8, buflen); + read_from_buf(key, buf, 0, 16, buflen); + break; + case CRYPTO_MODE_SNOW3G_UEA2: + case CRYPTO_MODE_ZUC_UEA3: + read_from_buf(key, buf, 0, 32, buflen); + break; + case CRYPTO_MODE_NULL: + break; + } + break; + + case SPACC_HASH_OPERATION: + buflen = MIN(sizeof(buf), + (u32)spacc->config.hash_page_size); + pdu_from_dev_s(buf, ctx->hash_key, buflen >> 2, + spacc->config.spacc_endian); + + switch (job->hash_mode) { + case CRYPTO_MODE_MAC_XCBC: + case CRYPTO_MODE_MAC_SM4_XCBC: + if (key && ksz <= 64) { + read_from_buf(key + (ksz - 32), buf, + 32, 32, buflen); + read_from_buf(key, buf, 0, ksz - 32, buflen); + } + break; + case CRYPTO_MODE_HASH_CRC32: + read_from_buf(iv, buf, 0, ivsz, buflen); + break; + case CRYPTO_MODE_MAC_SNOW3G_UIA2: + case CRYPTO_MODE_MAC_ZUC_UIA3: + read_from_buf(key, buf, 0, 32, buflen); + break; + default: + read_from_buf(key, buf, 0, ksz, buflen); + } + break; + default: + ret = -EINVAL; + } + + return ret; +} + +/* Context manager: This will reset all reference counts, pointers, etc */ +void spacc_ctx_init_all(struct spacc_device *spacc) +{ + int x; + struct spacc_ctx *ctx; + unsigned long lock_flag; + + spin_lock_irqsave(&spacc->ctx_lock, lock_flag); + + /* initialize contexts */ + for (x = 0; x < spacc->config.num_ctx; x++) { + ctx = &spacc->ctx[x]; + + /* sets everything including ref_cnt and ncontig to 0 */ + memset(ctx, 0, sizeof(*ctx)); + + ctx->ciph_key = spacc->regmap + SPACC_CTX_CIPH_KEY + + (x * spacc->config.ciph_page_size); + ctx->hash_key = spacc->regmap + SPACC_CTX_HASH_KEY + + (x * spacc->config.hash_page_size); + } + + spin_unlock_irqrestore(&spacc->ctx_lock, lock_flag); +} diff --git a/drivers/crypto/dwc-spacc/spacc_skcipher.c b/drivers/crypto/dwc-spacc/spacc_skcipher.c new file mode 100644 index 000000000000..3d0238baafba --- /dev/null +++ b/drivers/crypto/dwc-spacc/spacc_skcipher.c @@ -0,0 +1,715 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include +#include +#include +#include +#include + +#include "spacc_device.h" +#include "spacc_core.h" + +static LIST_HEAD(spacc_cipher_alg_list); +static DEFINE_MUTEX(spacc_cipher_alg_mutex); + +static struct mode_tab possible_ciphers[] = { + /* {keylen, MODE_TAB_CIPH(name, id, iv_len, blk_len)} */ + + /* SM4 */ + { MODE_TAB_CIPH("cbc(sm4)", SM4_CBC, 16, 16), .keylen[0] = 16, + .chunksize = 16, .walksize = 16, .min_keysize = 16, .max_keysize = 16 }, + { MODE_TAB_CIPH("ecb(sm4)", SM4_ECB, 0, 16), .keylen[0] = 16, + .chunksize = 16, .walksize = 16, .min_keysize = 16, .max_keysize = 16 }, + { MODE_TAB_CIPH("ctr(sm4)", SM4_CTR, 16, 1), .keylen[0] = 16, + .chunksize = 16, .walksize = 16, .min_keysize = 16, .max_keysize = 16 }, + { MODE_TAB_CIPH("xts(sm4)", SM4_XTS, 16, 16), .keylen[0] = 32, + .chunksize = 16, .walksize = 16, .min_keysize = 32, .max_keysize = 32 }, + { MODE_TAB_CIPH("cts(cbc(sm4))", SM4_CS3, 16, 16), .keylen[0] = 16, + .chunksize = 16, .walksize = 16, .min_keysize = 16, .max_keysize = 16 }, + + /* AES */ + { MODE_TAB_CIPH("cbc(aes)", AES_CBC, 16, 16), .keylen = { 16, 24, 32 }, + .chunksize = 16, .walksize = 16, .min_keysize = 16, .max_keysize = 32 }, + { MODE_TAB_CIPH("ecb(aes)", AES_ECB, 0, 16), .keylen = { 16, 24, 32 }, + .chunksize = 16, .walksize = 16, .min_keysize = 16, .max_keysize = 32 }, + { MODE_TAB_CIPH("xts(aes)", AES_XTS, 16, 16), .keylen = { 32, 48, 64 }, + .chunksize = 16, .walksize = 16, .min_keysize = 32, .max_keysize = 64 }, + { MODE_TAB_CIPH("cts(cbc(aes))", AES_CS3, 16, 16), + .keylen = { 16, 24, 32 }, .chunksize = 16, .walksize = 16, + .min_keysize = 16, .max_keysize = 32 }, + { MODE_TAB_CIPH("ctr(aes)", AES_CTR, 16, 1), .keylen = { 16, 24, 32 }, + .chunksize = 16, .walksize = 16, .min_keysize = 16, .max_keysize = 32 }, + + /* CHACHA20 */ + { MODE_TAB_CIPH("chacha20", CHACHA20_STREAM, 16, 1), .keylen[0] = 32, + .chunksize = 64, .walksize = 64, .min_keysize = 32, .max_keysize = 32 }, + + /* DES */ + { MODE_TAB_CIPH("ecb(des)", DES_ECB, 0, 8), .keylen[0] = 8, + .chunksize = 8, .walksize = 8, .min_keysize = 8, .max_keysize = 8}, + { MODE_TAB_CIPH("cbc(des)", DES_CBC, 8, 8), .keylen[0] = 8, + .chunksize = 8, .walksize = 8, .min_keysize = 8, .max_keysize = 8}, + { MODE_TAB_CIPH("ecb(des3_ede)", 3DES_ECB, 0, 8), .keylen[0] = 24, + .chunksize = 8, .walksize = 8, .min_keysize = 24, .max_keysize = 24 }, + { MODE_TAB_CIPH("cbc(des3_ede)", 3DES_CBC, 8, 8), .keylen[0] = 24, + .chunksize = 8, .walksize = 8, .min_keysize = 24, .max_keysize = 24 }, +}; + +static int spacc_skcipher_fallback(unsigned char *name, + struct skcipher_request *req, int enc_dec) +{ + int ret = 0; + struct crypto_skcipher *reqtfm = crypto_skcipher_reqtfm(req); + struct spacc_crypto_ctx *tctx = crypto_skcipher_ctx(reqtfm); + struct spacc_crypto_reqctx *ctx = skcipher_request_ctx(req); + + tctx->fb.cipher = crypto_alloc_skcipher(name, + CRYPTO_ALG_TYPE_SKCIPHER, + CRYPTO_ALG_NEED_FALLBACK); + + crypto_skcipher_set_reqsize(reqtfm, + sizeof(struct spacc_crypto_reqctx) + + crypto_skcipher_reqsize(tctx->fb.cipher)); + ret = crypto_skcipher_setkey(tctx->fb.cipher, tctx->cipher_key, + tctx->key_len); + if (ret) + return ret; + + skcipher_request_set_tfm(&ctx->fb.cipher_req, tctx->fb.cipher); + skcipher_request_set_crypt(&ctx->fb.cipher_req, req->src, req->dst, + req->cryptlen, req->iv); + + if (enc_dec) + ret = crypto_skcipher_decrypt(&ctx->fb.cipher_req); + else + ret = crypto_skcipher_encrypt(&ctx->fb.cipher_req); + + crypto_free_skcipher(tctx->fb.cipher); + tctx->fb.cipher = NULL; + + if (tctx->cipher_key) { + kfree(NULL); + tctx->cipher_key = NULL; + } + return ret; +} + +static void spacc_cipher_cleanup_dma(struct device *dev, + struct skcipher_request *req) +{ + struct spacc_crypto_reqctx *ctx = skcipher_request_ctx(req); + struct spacc_crypto_ctx *tctx = ctx->ccb.tctx; + + if (req->dst != req->src) { + if (ctx->src_nents) { + dma_unmap_sg(dev, req->src, ctx->src_nents, + DMA_TO_DEVICE); + pdu_ddt_free(&ctx->src); + } + + if (ctx->dst_nents) { + dma_unmap_sg(dev, req->dst, ctx->dst_nents, + DMA_FROM_DEVICE); + pdu_ddt_free(&ctx->dst); + } + } else { + if (ctx->src_nents) { + dma_unmap_sg(dev, req->src, ctx->src_nents, + DMA_TO_DEVICE); + pdu_ddt_free(&ctx->src); + } + } + + if (tctx->cipher_key) { + kfree(NULL); + tctx->cipher_key = NULL; + } +} + +static void spacc_cipher_cb(void *spacc, void *tfm) +{ + int err = -1; + struct cipher_cb_data *cb = tfm; + struct spacc_crypto_reqctx *ctx = skcipher_request_ctx(cb->req); + + u32 status_reg = readl(cb->spacc->regmap + SPACC_REG_STATUS); + u32 status_ret = (status_reg >> 24) & 0x03; + + if (ctx->mode == CRYPTO_MODE_DES_CBC || + ctx->mode == CRYPTO_MODE_3DES_CBC) { + spacc_read_context(cb->spacc, cb->tctx->handle, + SPACC_CRYPTO_OPERATION, NULL, 0, + cb->req->iv, 8); + } else if (ctx->mode != CRYPTO_MODE_DES_ECB && + ctx->mode != CRYPTO_MODE_3DES_ECB && + ctx->mode != CRYPTO_MODE_SM4_ECB && + ctx->mode != CRYPTO_MODE_AES_ECB && + ctx->mode != CRYPTO_MODE_SM4_XTS && + ctx->mode != CRYPTO_MODE_KASUMI_ECB) { + if (status_ret == 0x3) { + err = -EINVAL; + goto CALLBACK_ERR; + } + spacc_read_context(cb->spacc, cb->tctx->handle, + SPACC_CRYPTO_OPERATION, NULL, 0, + cb->req->iv, 16); + } + + if (ctx->mode != CRYPTO_MODE_DES_ECB && + ctx->mode != CRYPTO_MODE_DES_CBC && + ctx->mode != CRYPTO_MODE_3DES_ECB && + ctx->mode != CRYPTO_MODE_3DES_CBC) { + if (status_ret == 0x03) { + err = -EINVAL; + goto CALLBACK_ERR; + } + } + + if (ctx->mode == CRYPTO_MODE_SM4_ECB && status_ret == 0x03) { + err = -EINVAL; + goto CALLBACK_ERR; + } + + if (cb->req->dst != cb->req->src) + dma_sync_sg_for_cpu(cb->tctx->dev, cb->req->dst, ctx->dst_nents, + DMA_FROM_DEVICE); + + err = cb->spacc->job[cb->new_handle].job_err; + +CALLBACK_ERR: + spacc_cipher_cleanup_dma(cb->tctx->dev, cb->req); + spacc_close(cb->spacc, cb->new_handle); + skcipher_request_complete(cb->req, err); +} + +static int spacc_cipher_init_dma(struct device *dev, + struct skcipher_request *req) +{ + struct spacc_crypto_reqctx *ctx = skcipher_request_ctx(req); + int rc; + + if (req->src == req->dst) { + rc = spacc_sg_to_ddt(dev, req->src, req->cryptlen, &ctx->src, + DMA_TO_DEVICE); + if (rc < 0) { + pdu_ddt_free(&ctx->src); + return rc; + } + ctx->src_nents = rc; + } else { + rc = spacc_sg_to_ddt(dev, req->src, req->cryptlen, &ctx->src, + DMA_TO_DEVICE); + if (rc < 0) { + pdu_ddt_free(&ctx->src); + return rc; + } + ctx->src_nents = rc; + + rc = spacc_sg_to_ddt(dev, req->dst, req->cryptlen, &ctx->dst, + DMA_FROM_DEVICE); + if (rc < 0) { + pdu_ddt_free(&ctx->dst); + return rc; + } + ctx->dst_nents = rc; + } + + return 0; +} + +static int spacc_cipher_cra_init(struct crypto_tfm *tfm) +{ + struct spacc_crypto_ctx *tctx = crypto_tfm_ctx(tfm); + const struct spacc_alg *salg = spacc_tfm_skcipher(tfm); + + tctx->keylen = 0; + tctx->cipher_key = NULL; + tctx->handle = -1; + tctx->ctx_valid = false; + tctx->dev = get_device(salg->dev[0]); + + crypto_skcipher_set_reqsize(__crypto_skcipher_cast(tfm), + sizeof(struct spacc_crypto_reqctx)); + + return 0; +} + +static void spacc_cipher_cra_exit(struct crypto_tfm *tfm) +{ + struct spacc_crypto_ctx *tctx = crypto_tfm_ctx(tfm); + struct spacc_priv *priv = dev_get_drvdata(tctx->dev); + + + if (tctx->handle >= 0) + spacc_close(&priv->spacc, tctx->handle); + + put_device(tctx->dev); +} + + +static int spacc_check_keylen(const struct spacc_alg *salg, unsigned int keylen) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(salg->mode->keylen); i++) + if (salg->mode->keylen[i] == keylen) + return 0; + + return -EINVAL; +} + +static int spacc_cipher_setkey(struct crypto_skcipher *tfm, const u8 *key, + unsigned int keylen) +{ + int ret = 0, rc = 0, err; + const struct spacc_alg *salg = spacc_tfm_skcipher(&tfm->base); + struct spacc_crypto_ctx *tctx = crypto_skcipher_ctx(tfm); + struct spacc_priv *priv = dev_get_drvdata(tctx->dev); + struct spacc_crypto_reqctx *ctx = crypto_skcipher_ctx(tfm); + + err = spacc_check_keylen(salg, keylen); + if (err) + return err; + + ctx->mode = salg->mode->id; + tctx->key_len = keylen; + tctx->cipher_key = kmalloc(keylen, GFP_KERNEL); + memcpy(tctx->cipher_key, key, keylen); + + if (tctx->handle >= 0) { + spacc_close(&priv->spacc, tctx->handle); + put_device(tctx->dev); + tctx->handle = -1; + tctx->dev = NULL; + } + + priv = NULL; + priv = dev_get_drvdata(salg->dev[0]); + tctx->dev = get_device(salg->dev[0]); + ret = spacc_isenabled(&priv->spacc, salg->mode->id, + keylen); + if (ret) + tctx->handle = spacc_open(&priv->spacc, salg->mode->id, + CRYPTO_MODE_NULL, -1, 0, + spacc_cipher_cb, tfm); + + if (tctx->handle < 0) { + put_device(salg->dev[0]); + dev_dbg(salg->dev[0], "failed to open SPAcc context\n"); + return -EINVAL; + } + + /* Weak key Implementation for DES_ECB */ + if (salg->mode->id == CRYPTO_MODE_DES_ECB) { + err = verify_skcipher_des_key(tfm, key); + if (err) + return -EINVAL; + } + + if (salg->mode->id == CRYPTO_MODE_SM4_F8 || + salg->mode->id == CRYPTO_MODE_AES_F8) { + /* f8 mode requires an IV of 128-bits and a key-salt mask, + * equivalent in size to the key. + * AES-F8 or SM4-F8 mode has a SALTKEY prepended to the base + * key. + */ + rc = spacc_write_context(&priv->spacc, tctx->handle, + SPACC_CRYPTO_OPERATION, key, 16, + NULL, 0); + } else { + rc = spacc_write_context(&priv->spacc, tctx->handle, + SPACC_CRYPTO_OPERATION, key, keylen, + NULL, 0); + } + + if (rc < 0) { + dev_dbg(salg->dev[0], "failed with SPAcc write context\n"); + return -EINVAL; + } + + return 0; +} + +static int spacc_cipher_process(struct skcipher_request *req, int enc_dec) +{ + u8 ivc1[16]; + unsigned char *name; + unsigned int len = 0; + u32 num_iv = 0, diff; + u64 num_iv64 = 0, diff64; + unsigned char chacha20_iv[16]; + int rc = 0, ret = 0, i = 0, j = 0; + struct crypto_skcipher *reqtfm = crypto_skcipher_reqtfm(req); + struct spacc_crypto_ctx *tctx = crypto_skcipher_ctx(reqtfm); + struct spacc_crypto_reqctx *ctx = skcipher_request_ctx(req); + struct spacc_priv *priv = dev_get_drvdata(tctx->dev); + const struct spacc_alg *salg = spacc_tfm_skcipher(&reqtfm->base); + struct spacc_device *device_h = &priv->spacc; + + len = ctx->crypt_len / 16; + + if (req->cryptlen == 0) { + if (salg->mode->id == CRYPTO_MODE_SM4_CS3 || + salg->mode->id == CRYPTO_MODE_SM4_XTS || + salg->mode->id == CRYPTO_MODE_AES_XTS || + salg->mode->id == CRYPTO_MODE_AES_CS3) + return -EINVAL; + else + return 0; + } + + /* Given IV - <1st 4-bytes as counter value> + * + * Reversing the order of nonce & counter as, + * <1st 12-bytes as nonce> + * + * and then write to HW context, + * ex: + * Given IV - 2a000000000000000000000000000002 + * Reverse order - 0000000000000000000000020000002a + */ + if (salg->mode->id == CRYPTO_MODE_CHACHA20_STREAM) { + for (i = 4; i < 16; i++) { + chacha20_iv[j] = req->iv[i]; + j++; + } + + j = j + 3; + + for (i = 0; i <= 3; i++) { + chacha20_iv[j] = req->iv[i]; + j--; + } + memcpy(req->iv, chacha20_iv, 16); + } + + if (salg->mode->id == CRYPTO_MODE_SM4_CFB) { + if (req->cryptlen % 16 != 0) { + name = salg->calg->cra_name; + ret = spacc_skcipher_fallback(name, req, enc_dec); + return ret; + } + } + + if (salg->mode->id == CRYPTO_MODE_SM4_XTS || + salg->mode->id == CRYPTO_MODE_SM4_CS3 || + salg->mode->id == CRYPTO_MODE_AES_XTS || + salg->mode->id == CRYPTO_MODE_AES_CS3) { + if (req->cryptlen == 16) { + name = salg->calg->cra_name; + ret = spacc_skcipher_fallback(name, req, enc_dec); + return ret; + } + } + + if (salg->mode->id == CRYPTO_MODE_AES_CTR || + salg->mode->id == CRYPTO_MODE_SM4_CTR) { + /* copy the IV to local buffer */ + for (i = 0; i < 16; i++) + ivc1[i] = req->iv[i]; + + /* 32-bit counter width */ + if (readl(device_h->regmap + SPACC_REG_VERSION_EXT_3) & (0x2)) { + + for (i = 12; i < 16; i++) { + num_iv <<= 8; + num_iv |= ivc1[i]; + } + + diff = SPACC_CTR_IV_MAX32 - num_iv; + + if (len > diff) { + name = salg->calg->cra_name; + ret = spacc_skcipher_fallback(name, + req, enc_dec); + return ret; + } + } else if (readl(device_h->regmap + SPACC_REG_VERSION_EXT_3) + & (0x3)) { /* 64-bit counter width */ + + for (i = 8; i < 16; i++) { + num_iv64 <<= 8; + num_iv64 |= ivc1[i]; + } + + diff64 = SPACC_CTR_IV_MAX64 - num_iv64; + + if (len > diff64) { + name = salg->calg->cra_name; + ret = spacc_skcipher_fallback(name, + req, enc_dec); + return ret; + } + } else if (readl(device_h->regmap + SPACC_REG_VERSION_EXT_3) + & (0x1)) { /* 16-bit counter width */ + + for (i = 14; i < 16; i++) { + num_iv <<= 8; + num_iv |= ivc1[i]; + } + + diff = SPACC_CTR_IV_MAX16 - num_iv; + + if (len > diff) { + name = salg->calg->cra_name; + ret = spacc_skcipher_fallback(name, + req, enc_dec); + return ret; + } + } else if (readl(device_h->regmap + SPACC_REG_VERSION_EXT_3) + & (0x0)) { /* 8-bit counter width */ + + for (i = 15; i < 16; i++) { + num_iv <<= 8; + num_iv |= ivc1[i]; + } + + diff = SPACC_CTR_IV_MAX8 - num_iv; + + if (len > diff) { + name = salg->calg->cra_name; + ret = spacc_skcipher_fallback(name, + req, enc_dec); + return ret; + } + } + } + + if (salg->mode->id == CRYPTO_MODE_DES_CBC || + salg->mode->id == CRYPTO_MODE_3DES_CBC) + rc = spacc_write_context(&priv->spacc, tctx->handle, + SPACC_CRYPTO_OPERATION, NULL, 0, + req->iv, 8); + else if (salg->mode->id != CRYPTO_MODE_DES_ECB && + salg->mode->id != CRYPTO_MODE_3DES_ECB && + salg->mode->id != CRYPTO_MODE_SM4_ECB && + salg->mode->id != CRYPTO_MODE_AES_ECB && + salg->mode->id != CRYPTO_MODE_KASUMI_ECB) + rc = spacc_write_context(&priv->spacc, tctx->handle, + SPACC_CRYPTO_OPERATION, NULL, 0, + req->iv, 16); + + if (rc < 0) + pr_err("ERR: spacc_write_context\n"); + + /* Initialize the DMA */ + rc = spacc_cipher_init_dma(tctx->dev, req); + + ctx->ccb.new_handle = spacc_clone_handle(&priv->spacc, tctx->handle, + &ctx->ccb); + if (ctx->ccb.new_handle < 0) { + spacc_cipher_cleanup_dma(tctx->dev, req); + dev_dbg(salg->dev[0], "failed to clone handle\n"); + return -EINVAL; + } + + /* copying the data to clone handle */ + ctx->ccb.tctx = tctx; + ctx->ccb.ctx = ctx; + ctx->ccb.req = req; + ctx->ccb.spacc = &priv->spacc; + + if (salg->mode->id == CRYPTO_MODE_SM4_CS3) { + int handle = ctx->ccb.new_handle; + + if (handle < 0 || handle > SPACC_MAX_JOBS) + return -ENXIO; + + device_h->job[handle].auxinfo_cs_mode = 3; + } + + if (enc_dec) { /* for decrypt */ + rc = spacc_set_operation(&priv->spacc, ctx->ccb.new_handle, 1, + ICV_IGNORE, IP_ICV_IGNORE, 0, 0, 0); + spacc_set_key_exp(&priv->spacc, ctx->ccb.new_handle); + } else { /* for encrypt */ + rc = spacc_set_operation(&priv->spacc, ctx->ccb.new_handle, 0, + ICV_IGNORE, IP_ICV_IGNORE, 0, 0, 0); + } + + rc = spacc_packet_enqueue_ddt(&priv->spacc, ctx->ccb.new_handle, + &ctx->src, + (req->dst == req->src) ? &ctx->src : + &ctx->dst, + req->cryptlen, + 0, 0, 0, 0, 0); + if (rc < 0) { + spacc_cipher_cleanup_dma(tctx->dev, req); + spacc_close(&priv->spacc, ctx->ccb.new_handle); + + if (rc != -EBUSY && rc < 0) { + dev_err(tctx->dev, + "failed to enqueue job, ERR: %d\n", rc); + return rc; + } else if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) { + return -EBUSY; + } + } + + priv->spacc.job[tctx->handle].first_use = 0; + priv->spacc.job[tctx->handle].ctrl &= + ~(1UL << priv->spacc.config.ctrl_map[SPACC_CTRL_KEY_EXP]); + + return -EINPROGRESS; +} + +static int spacc_cipher_encrypt(struct skcipher_request *req) +{ + int rv = 0; + struct spacc_crypto_reqctx *ctx = skcipher_request_ctx(req); + + ctx->crypt_len = req->cryptlen; + + /* enc_dec - 0(encrypt), 1(decrypt) */ + rv = spacc_cipher_process(req, 0); + + return rv; +} + +static int spacc_cipher_decrypt(struct skcipher_request *req) +{ + int rv = 0; + struct spacc_crypto_reqctx *ctx = skcipher_request_ctx(req); + + ctx->crypt_len = req->cryptlen; + + /* enc_dec - 0(encrypt), 1(decrypt) */ + rv = spacc_cipher_process(req, 1); + + return rv; +} + +static struct skcipher_alg spacc_skcipher_alg = { + .setkey = spacc_cipher_setkey, + .encrypt = spacc_cipher_encrypt, + .decrypt = spacc_cipher_decrypt, + /* + * Chunksize: Equal to the block size except for stream cipher + * such as CTR where it is set to the underlying block size. + * + * Walksize: Equal to the chunk size except in cases where the + * algorithm is considerably more efficient if it can operate on + * multiple chunks in parallel. Should be a multiple of chunksize. + */ + .min_keysize = 16, + .max_keysize = 64, + .ivsize = 16, + .chunksize = 16, + .walksize = 16, + .base = { + .cra_flags = CRYPTO_ALG_TYPE_SKCIPHER | + CRYPTO_ALG_ASYNC | + CRYPTO_ALG_ALLOCATES_MEMORY | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = 16, + .cra_ctxsize = sizeof(struct spacc_crypto_ctx), + .cra_priority = 300, + .cra_init = spacc_cipher_cra_init, + .cra_exit = spacc_cipher_cra_exit, + .cra_module = THIS_MODULE, + }, +}; + +static void spacc_init_calg(struct crypto_alg *calg, + const struct mode_tab *mode) +{ + + strscpy(calg->cra_name, mode->name, sizeof(mode->name) - 1); + calg->cra_name[sizeof(mode->name) - 1] = '\0'; + + strscpy(calg->cra_driver_name, "spacc-"); + strcat(calg->cra_driver_name, mode->name); + calg->cra_driver_name[sizeof(calg->cra_driver_name) - 1] = '\0'; + calg->cra_blocksize = mode->blocklen; +} + +static int spacc_register_cipher(struct spacc_alg *salg, + unsigned int algo_idx) +{ + int rc; + + salg->calg = &salg->alg.skcipher.base; + salg->alg.skcipher = spacc_skcipher_alg; + + /* this function will assign mode->name to calg->cra_name & + * calg->cra_driver_name + */ + spacc_init_calg(salg->calg, salg->mode); + salg->alg.skcipher.ivsize = salg->mode->ivlen; + salg->alg.skcipher.base.cra_blocksize = salg->mode->blocklen; + + salg->alg.skcipher.chunksize = possible_ciphers[algo_idx].chunksize; + salg->alg.skcipher.walksize = possible_ciphers[algo_idx].walksize; + salg->alg.skcipher.min_keysize = possible_ciphers[algo_idx].min_keysize; + salg->alg.skcipher.max_keysize = possible_ciphers[algo_idx].max_keysize; + + rc = crypto_register_skcipher(&salg->alg.skcipher); + if (rc < 0) + return rc; + + mutex_lock(&spacc_cipher_alg_mutex); + list_add(&salg->list, &spacc_cipher_alg_list); + mutex_unlock(&spacc_cipher_alg_mutex); + + return 0; +} + +int probe_ciphers(struct platform_device *spacc_pdev) +{ + int rc; + unsigned int i, y; + int registered = 0; + struct spacc_alg *salg; + struct spacc_priv *priv = dev_get_drvdata(&spacc_pdev->dev); + + for (i = 0; i < ARRAY_SIZE(possible_ciphers); i++) + possible_ciphers[i].valid = 0; + + for (i = 0; i < ARRAY_SIZE(possible_ciphers) && + (possible_ciphers[i].valid == 0); i++) { + for (y = 0; y < 3; y++) { + if (spacc_isenabled(&priv->spacc, + possible_ciphers[i].id & 0xFF, + possible_ciphers[i].keylen[y])) { + salg = kmalloc(sizeof(*salg), GFP_KERNEL); + if (!salg) + return -ENOMEM; + + salg->mode = &possible_ciphers[i]; + salg->dev[0] = &spacc_pdev->dev; + + if (possible_ciphers[i].valid == 0) { + rc = spacc_register_cipher(salg, i); + if (rc < 0) { + kfree(salg); + continue; + } + } + dev_dbg(&spacc_pdev->dev, "registered %s\n", + possible_ciphers[i].name); + registered++; + possible_ciphers[i].valid = 1; + } + } + } + + return registered; +} + +int spacc_unregister_cipher_algs(void) +{ + struct spacc_alg *salg, *tmp; + + mutex_lock(&spacc_cipher_alg_mutex); + + list_for_each_entry_safe(salg, tmp, &spacc_cipher_alg_list, list) { + crypto_unregister_skcipher(&salg->alg.skcipher); + list_del(&salg->list); + kfree(salg); + } + + mutex_unlock(&spacc_cipher_alg_mutex); + + return 0; +}