--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2019 HiSilicon Limited. */
+
+#include <crypto/aes.h>
+#include <crypto/algapi.h>
+#include <crypto/des.h>
+#include <crypto/skcipher.h>
+#include <crypto/xts.h>
+#include <linux/crypto.h>
+#include <linux/dma-mapping.h>
+#include <linux/idr.h>
+
+#include "sec.h"
+#include "sec_crypto.h"
+
+#define SEC_PRIORITY 4001
+#define SEC_XTS_MIN_KEY_SIZE (2 * AES_MIN_KEY_SIZE)
+#define SEC_XTS_MAX_KEY_SIZE (2 * AES_MAX_KEY_SIZE)
+#define SEC_DES3_2KEY_SIZE (2 * DES_KEY_SIZE)
+#define SEC_DES3_3KEY_SIZE (3 * DES_KEY_SIZE)
+
+/* SEC sqe(bd) bit operational relative MACRO */
+#define SEC_DE_OFFSET 1
+#define SEC_CIPHER_OFFSET 4
+#define SEC_SCENE_OFFSET 3
+#define SEC_DST_SGL_OFFSET 2
+#define SEC_SRC_SGL_OFFSET 7
+#define SEC_CKEY_OFFSET 9
+#define SEC_CMODE_OFFSET 12
+#define SEC_FLAG_OFFSET 7
+#define SEC_FLAG_MASK 0x0780
+#define SEC_TYPE_MASK 0x0F
+#define SEC_DONE_MASK 0x0001
+
+#define SEC_TOTAL_IV_SZ (SEC_IV_SIZE * QM_Q_DEPTH)
+#define SEC_SGL_SGE_NR 128
+#define SEC_CTX_DEV(ctx) (&(ctx)->sec->qm.pdev->dev)
+
+static DEFINE_MUTEX(sec_algs_lock);
+static unsigned int sec_active_devs;
+
+/* Get an en/de-cipher queue cyclically to balance load over queues of TFM */
+static inline int sec_get_queue_id(struct sec_ctx *ctx, struct sec_req *req)
+{
+ if (req->c_req.encrypt)
+ return (u32)atomic_inc_return(&ctx->enc_qcyclic) %
+ ctx->hlf_q_num;
+
+ return (u32)atomic_inc_return(&ctx->dec_qcyclic) % ctx->hlf_q_num +
+ ctx->hlf_q_num;
+}
+
+static inline void sec_put_queue_id(struct sec_ctx *ctx, struct sec_req *req)
+{
+ if (req->c_req.encrypt)
+ atomic_dec(&ctx->enc_qcyclic);
+ else
+ atomic_dec(&ctx->dec_qcyclic);
+}
+
+static int sec_alloc_req_id(struct sec_req *req, struct sec_qp_ctx *qp_ctx)
+{
+ int req_id;
+
+ mutex_lock(&qp_ctx->req_lock);
+
+ req_id = idr_alloc_cyclic(&qp_ctx->req_idr, NULL,
+ 0, QM_Q_DEPTH, GFP_ATOMIC);
+ mutex_unlock(&qp_ctx->req_lock);
+ if (req_id < 0) {
+ dev_err(SEC_CTX_DEV(req->ctx), "alloc req id fail!\n");
+ return req_id;
+ }
+
+ req->qp_ctx = qp_ctx;
+ qp_ctx->req_list[req_id] = req;
+ return req_id;
+}
+
+static void sec_free_req_id(struct sec_req *req)
+{
+ struct sec_qp_ctx *qp_ctx = req->qp_ctx;
+ int req_id = req->req_id;
+
+ if (req_id < 0 || req_id >= QM_Q_DEPTH) {
+ dev_err(SEC_CTX_DEV(req->ctx), "free request id invalid!\n");
+ return;
+ }
+
+ qp_ctx->req_list[req_id] = NULL;
+ req->qp_ctx = NULL;
+
+ mutex_lock(&qp_ctx->req_lock);
+ idr_remove(&qp_ctx->req_idr, req_id);
+ mutex_unlock(&qp_ctx->req_lock);
+}
+
+static void sec_req_cb(struct hisi_qp *qp, void *resp)
+{
+ struct sec_qp_ctx *qp_ctx = qp->qp_ctx;
+ struct sec_sqe *bd = resp;
+ u16 done, flag;
+ u8 type;
+ struct sec_req *req;
+
+ type = bd->type_cipher_auth & SEC_TYPE_MASK;
+ if (type == SEC_BD_TYPE2) {
+ req = qp_ctx->req_list[le16_to_cpu(bd->type2.tag)];
+ req->err_type = bd->type2.error_type;
+
+ done = le16_to_cpu(bd->type2.done_flag) & SEC_DONE_MASK;
+ flag = (le16_to_cpu(bd->type2.done_flag) &
+ SEC_FLAG_MASK) >> SEC_FLAG_OFFSET;
+ if (req->err_type || done != 0x1 || flag != 0x2)
+ dev_err(SEC_CTX_DEV(req->ctx),
+ "err_type[%d],done[%d],flag[%d]\n",
+ req->err_type, done, flag);
+ } else {
+ pr_err("err bd type [%d]\n", type);
+ return;
+ }
+
+ req->ctx->req_op->buf_unmap(req->ctx, req);
+
+ req->ctx->req_op->callback(req->ctx, req);
+}
+
+static int sec_bd_send(struct sec_ctx *ctx, struct sec_req *req)
+{
+ struct sec_qp_ctx *qp_ctx = req->qp_ctx;
+ int ret;
+
+ mutex_lock(&qp_ctx->req_lock);
+ ret = hisi_qp_send(qp_ctx->qp, &req->sec_sqe);
+ mutex_unlock(&qp_ctx->req_lock);
+
+ if (ret == -EBUSY)
+ return -ENOBUFS;
+
+ if (!ret) {
+ if (req->fake_busy)
+ ret = -EBUSY;
+ else
+ ret = -EINPROGRESS;
+ }
+
+ return ret;
+}
+
+static int sec_create_qp_ctx(struct hisi_qm *qm, struct sec_ctx *ctx,
+ int qp_ctx_id, int alg_type)
+{
+ struct device *dev = SEC_CTX_DEV(ctx);
+ struct sec_qp_ctx *qp_ctx;
+ struct hisi_qp *qp;
+ int ret = -ENOMEM;
+
+ qp = hisi_qm_create_qp(qm, alg_type);
+ if (IS_ERR(qp))
+ return PTR_ERR(qp);
+
+ qp_ctx = &ctx->qp_ctx[qp_ctx_id];
+ qp->req_type = 0;
+ qp->qp_ctx = qp_ctx;
+ qp->req_cb = sec_req_cb;
+ qp_ctx->qp = qp;
+ qp_ctx->ctx = ctx;
+
+ mutex_init(&qp_ctx->req_lock);
+ atomic_set(&qp_ctx->pending_reqs, 0);
+ idr_init(&qp_ctx->req_idr);
+
+ qp_ctx->req_list = kcalloc(QM_Q_DEPTH, sizeof(void *), GFP_ATOMIC);
+ if (!qp_ctx->req_list)
+ goto err_destroy_idr;
+
+ qp_ctx->c_in_pool = hisi_acc_create_sgl_pool(dev, QM_Q_DEPTH,
+ SEC_SGL_SGE_NR);
+ if (!qp_ctx->c_in_pool) {
+ dev_err(dev, "fail to create sgl pool for input!\n");
+ goto err_free_req_list;
+ }
+
+ qp_ctx->c_out_pool = hisi_acc_create_sgl_pool(dev, QM_Q_DEPTH,
+ SEC_SGL_SGE_NR);
+ if (!qp_ctx->c_out_pool) {
+ dev_err(dev, "fail to create sgl pool for output!\n");
+ goto err_free_c_in_pool;
+ }
+
+ ret = ctx->req_op->resource_alloc(ctx, qp_ctx);
+ if (ret)
+ goto err_free_c_out_pool;
+
+ ret = hisi_qm_start_qp(qp, 0);
+ if (ret < 0)
+ goto err_queue_free;
+
+ return 0;
+
+err_queue_free:
+ ctx->req_op->resource_free(ctx, qp_ctx);
+err_free_c_out_pool:
+ hisi_acc_free_sgl_pool(dev, qp_ctx->c_out_pool);
+err_free_c_in_pool:
+ hisi_acc_free_sgl_pool(dev, qp_ctx->c_in_pool);
+err_free_req_list:
+ kfree(qp_ctx->req_list);
+err_destroy_idr:
+ idr_destroy(&qp_ctx->req_idr);
+ hisi_qm_release_qp(qp);
+
+ return ret;
+}
+
+static void sec_release_qp_ctx(struct sec_ctx *ctx,
+ struct sec_qp_ctx *qp_ctx)
+{
+ struct device *dev = SEC_CTX_DEV(ctx);
+
+ hisi_qm_stop_qp(qp_ctx->qp);
+ ctx->req_op->resource_free(ctx, qp_ctx);
+
+ hisi_acc_free_sgl_pool(dev, qp_ctx->c_out_pool);
+ hisi_acc_free_sgl_pool(dev, qp_ctx->c_in_pool);
+
+ idr_destroy(&qp_ctx->req_idr);
+ kfree(qp_ctx->req_list);
+ hisi_qm_release_qp(qp_ctx->qp);
+}
+
+static int sec_skcipher_init(struct crypto_skcipher *tfm)
+{
+ struct sec_ctx *ctx = crypto_skcipher_ctx(tfm);
+ struct sec_cipher_ctx *c_ctx;
+ struct sec_dev *sec;
+ struct device *dev;
+ struct hisi_qm *qm;
+ int i, ret;
+
+ crypto_skcipher_set_reqsize(tfm, sizeof(struct sec_req));
+
+ sec = sec_find_device(cpu_to_node(smp_processor_id()));
+ if (!sec) {
+ pr_err("find no Hisilicon SEC device!\n");
+ return -ENODEV;
+ }
+ ctx->sec = sec;
+ qm = &sec->qm;
+ dev = &qm->pdev->dev;
+ ctx->hlf_q_num = sec->ctx_q_num >> 0x1;
+
+ /* Half of queue depth is taken as fake requests limit in the queue. */
+ ctx->fake_req_limit = QM_Q_DEPTH >> 0x1;
+ ctx->qp_ctx = kcalloc(sec->ctx_q_num, sizeof(struct sec_qp_ctx),
+ GFP_KERNEL);
+ if (!ctx->qp_ctx)
+ return -ENOMEM;
+
+ for (i = 0; i < sec->ctx_q_num; i++) {
+ ret = sec_create_qp_ctx(qm, ctx, i, 0);
+ if (ret)
+ goto err_sec_release_qp_ctx;
+ }
+
+ c_ctx = &ctx->c_ctx;
+ c_ctx->ivsize = crypto_skcipher_ivsize(tfm);
+ if (c_ctx->ivsize > SEC_IV_SIZE) {
+ dev_err(dev, "get error iv size!\n");
+ ret = -EINVAL;
+ goto err_sec_release_qp_ctx;
+ }
+ c_ctx->c_key = dma_alloc_coherent(dev, SEC_MAX_KEY_SIZE,
+ &c_ctx->c_key_dma, GFP_KERNEL);
+ if (!c_ctx->c_key) {
+ ret = -ENOMEM;
+ goto err_sec_release_qp_ctx;
+ }
+
+ return 0;
+
+err_sec_release_qp_ctx:
+ for (i = i - 1; i >= 0; i--)
+ sec_release_qp_ctx(ctx, &ctx->qp_ctx[i]);
+
+ kfree(ctx->qp_ctx);
+ return ret;
+}
+
+static void sec_skcipher_exit(struct crypto_skcipher *tfm)
+{
+ struct sec_ctx *ctx = crypto_skcipher_ctx(tfm);
+ struct sec_cipher_ctx *c_ctx = &ctx->c_ctx;
+ int i = 0;
+
+ if (c_ctx->c_key) {
+ dma_free_coherent(SEC_CTX_DEV(ctx), SEC_MAX_KEY_SIZE,
+ c_ctx->c_key, c_ctx->c_key_dma);
+ c_ctx->c_key = NULL;
+ }
+
+ for (i = 0; i < ctx->sec->ctx_q_num; i++)
+ sec_release_qp_ctx(ctx, &ctx->qp_ctx[i]);
+
+ kfree(ctx->qp_ctx);
+}
+
+static int sec_skcipher_3des_setkey(struct sec_cipher_ctx *c_ctx,
+ const u32 keylen,
+ const enum sec_cmode c_mode)
+{
+ switch (keylen) {
+ case SEC_DES3_2KEY_SIZE:
+ c_ctx->c_key_len = SEC_CKEY_3DES_2KEY;
+ break;
+ case SEC_DES3_3KEY_SIZE:
+ c_ctx->c_key_len = SEC_CKEY_3DES_3KEY;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int sec_skcipher_aes_sm4_setkey(struct sec_cipher_ctx *c_ctx,
+ const u32 keylen,
+ const enum sec_cmode c_mode)
+{
+ if (c_mode == SEC_CMODE_XTS) {
+ switch (keylen) {
+ case SEC_XTS_MIN_KEY_SIZE:
+ c_ctx->c_key_len = SEC_CKEY_128BIT;
+ break;
+ case SEC_XTS_MAX_KEY_SIZE:
+ c_ctx->c_key_len = SEC_CKEY_256BIT;
+ break;
+ default:
+ pr_err("hisi_sec2: xts mode key error!\n");
+ return -EINVAL;
+ }
+ } else {
+ switch (keylen) {
+ case AES_KEYSIZE_128:
+ c_ctx->c_key_len = SEC_CKEY_128BIT;
+ break;
+ case AES_KEYSIZE_192:
+ c_ctx->c_key_len = SEC_CKEY_192BIT;
+ break;
+ case AES_KEYSIZE_256:
+ c_ctx->c_key_len = SEC_CKEY_256BIT;
+ break;
+ default:
+ pr_err("hisi_sec2: aes key error!\n");
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+static int sec_skcipher_setkey(struct crypto_skcipher *tfm, const u8 *key,
+ const u32 keylen, const enum sec_calg c_alg,
+ const enum sec_cmode c_mode)
+{
+ struct sec_ctx *ctx = crypto_skcipher_ctx(tfm);
+ struct sec_cipher_ctx *c_ctx = &ctx->c_ctx;
+ int ret;
+
+ if (c_mode == SEC_CMODE_XTS) {
+ ret = xts_verify_key(tfm, key, keylen);
+ if (ret) {
+ dev_err(SEC_CTX_DEV(ctx), "xts mode key err!\n");
+ return ret;
+ }
+ }
+
+ c_ctx->c_alg = c_alg;
+ c_ctx->c_mode = c_mode;
+
+ switch (c_alg) {
+ case SEC_CALG_3DES:
+ ret = sec_skcipher_3des_setkey(c_ctx, keylen, c_mode);
+ break;
+ case SEC_CALG_AES:
+ case SEC_CALG_SM4:
+ ret = sec_skcipher_aes_sm4_setkey(c_ctx, keylen, c_mode);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (ret) {
+ dev_err(SEC_CTX_DEV(ctx), "set sec key err!\n");
+ return ret;
+ }
+
+ memcpy(c_ctx->c_key, key, keylen);
+
+ return 0;
+}
+
+#define GEN_SEC_SETKEY_FUNC(name, c_alg, c_mode) \
+static int sec_setkey_##name(struct crypto_skcipher *tfm, const u8 *key,\
+ u32 keylen) \
+{ \
+ return sec_skcipher_setkey(tfm, key, keylen, c_alg, c_mode); \
+}
+
+GEN_SEC_SETKEY_FUNC(aes_ecb, SEC_CALG_AES, SEC_CMODE_ECB)
+GEN_SEC_SETKEY_FUNC(aes_cbc, SEC_CALG_AES, SEC_CMODE_CBC)
+GEN_SEC_SETKEY_FUNC(aes_xts, SEC_CALG_AES, SEC_CMODE_XTS)
+
+GEN_SEC_SETKEY_FUNC(3des_ecb, SEC_CALG_3DES, SEC_CMODE_ECB)
+GEN_SEC_SETKEY_FUNC(3des_cbc, SEC_CALG_3DES, SEC_CMODE_CBC)
+
+GEN_SEC_SETKEY_FUNC(sm4_xts, SEC_CALG_SM4, SEC_CMODE_XTS)
+GEN_SEC_SETKEY_FUNC(sm4_cbc, SEC_CALG_SM4, SEC_CMODE_CBC)
+
+static int sec_skcipher_get_res(struct sec_ctx *ctx,
+ struct sec_req *req)
+{
+ struct sec_qp_ctx *qp_ctx = req->qp_ctx;
+ struct sec_cipher_res *c_res = qp_ctx->alg_meta_data;
+ struct sec_cipher_req *c_req = &req->c_req;
+ int req_id = req->req_id;
+
+ c_req->c_ivin = c_res[req_id].c_ivin;
+ c_req->c_ivin_dma = c_res[req_id].c_ivin_dma;
+
+ return 0;
+}
+
+static int sec_skcipher_resource_alloc(struct sec_ctx *ctx,
+ struct sec_qp_ctx *qp_ctx)
+{
+ struct device *dev = SEC_CTX_DEV(ctx);
+ struct sec_cipher_res *res;
+ int i;
+
+ res = kcalloc(QM_Q_DEPTH, sizeof(struct sec_cipher_res), GFP_KERNEL);
+ if (!res)
+ return -ENOMEM;
+
+ res->c_ivin = dma_alloc_coherent(dev, SEC_TOTAL_IV_SZ,
+ &res->c_ivin_dma, GFP_KERNEL);
+ if (!res->c_ivin) {
+ kfree(res);
+ return -ENOMEM;
+ }
+
+ for (i = 1; i < QM_Q_DEPTH; i++) {
+ res[i].c_ivin_dma = res->c_ivin_dma + i * SEC_IV_SIZE;
+ res[i].c_ivin = res->c_ivin + i * SEC_IV_SIZE;
+ }
+ qp_ctx->alg_meta_data = res;
+
+ return 0;
+}
+
+static void sec_skcipher_resource_free(struct sec_ctx *ctx,
+ struct sec_qp_ctx *qp_ctx)
+{
+ struct sec_cipher_res *res = qp_ctx->alg_meta_data;
+ struct device *dev = SEC_CTX_DEV(ctx);
+
+ if (!res)
+ return;
+
+ dma_free_coherent(dev, SEC_TOTAL_IV_SZ, res->c_ivin, res->c_ivin_dma);
+ kfree(res);
+}
+
+static int sec_skcipher_map(struct device *dev, struct sec_req *req,
+ struct scatterlist *src, struct scatterlist *dst)
+{
+ struct sec_cipher_req *c_req = &req->c_req;
+ struct sec_qp_ctx *qp_ctx = req->qp_ctx;
+
+ c_req->c_in = hisi_acc_sg_buf_map_to_hw_sgl(dev, src,
+ qp_ctx->c_in_pool,
+ req->req_id,
+ &c_req->c_in_dma);
+
+ if (IS_ERR(c_req->c_in)) {
+ dev_err(dev, "fail to dma map input sgl buffers!\n");
+ return PTR_ERR(c_req->c_in);
+ }
+
+ if (dst == src) {
+ c_req->c_out = c_req->c_in;
+ c_req->c_out_dma = c_req->c_in_dma;
+ } else {
+ c_req->c_out = hisi_acc_sg_buf_map_to_hw_sgl(dev, dst,
+ qp_ctx->c_out_pool,
+ req->req_id,
+ &c_req->c_out_dma);
+
+ if (IS_ERR(c_req->c_out)) {
+ dev_err(dev, "fail to dma map output sgl buffers!\n");
+ hisi_acc_sg_buf_unmap(dev, src, c_req->c_in);
+ return PTR_ERR(c_req->c_out);
+ }
+ }
+
+ return 0;
+}
+
+static int sec_skcipher_sgl_map(struct sec_ctx *ctx, struct sec_req *req)
+{
+ struct sec_cipher_req *c_req = &req->c_req;
+
+ return sec_skcipher_map(SEC_CTX_DEV(ctx), req,
+ c_req->sk_req->src, c_req->sk_req->dst);
+}
+
+static void sec_skcipher_sgl_unmap(struct sec_ctx *ctx, struct sec_req *req)
+{
+ struct device *dev = SEC_CTX_DEV(ctx);
+ struct sec_cipher_req *c_req = &req->c_req;
+ struct skcipher_request *sk_req = c_req->sk_req;
+
+ if (sk_req->dst != sk_req->src)
+ hisi_acc_sg_buf_unmap(dev, sk_req->src, c_req->c_in);
+
+ hisi_acc_sg_buf_unmap(dev, sk_req->dst, c_req->c_out);
+}
+
+static int sec_request_transfer(struct sec_ctx *ctx, struct sec_req *req)
+{
+ int ret;
+
+ ret = ctx->req_op->buf_map(ctx, req);
+ if (ret)
+ return ret;
+
+ ctx->req_op->do_transfer(ctx, req);
+
+ ret = ctx->req_op->bd_fill(ctx, req);
+ if (ret)
+ goto unmap_req_buf;
+
+ return ret;
+
+unmap_req_buf:
+ ctx->req_op->buf_unmap(ctx, req);
+
+ return ret;
+}
+
+static void sec_request_untransfer(struct sec_ctx *ctx, struct sec_req *req)
+{
+ ctx->req_op->buf_unmap(ctx, req);
+}
+
+static void sec_skcipher_copy_iv(struct sec_ctx *ctx, struct sec_req *req)
+{
+ struct skcipher_request *sk_req = req->c_req.sk_req;
+ struct sec_cipher_req *c_req = &req->c_req;
+
+ c_req->c_len = sk_req->cryptlen;
+ memcpy(c_req->c_ivin, sk_req->iv, ctx->c_ctx.ivsize);
+}
+
+static int sec_skcipher_bd_fill(struct sec_ctx *ctx, struct sec_req *req)
+{
+ struct sec_cipher_ctx *c_ctx = &ctx->c_ctx;
+ struct sec_cipher_req *c_req = &req->c_req;
+ struct sec_sqe *sec_sqe = &req->sec_sqe;
+ u8 de = 0;
+ u8 scene, sa_type, da_type;
+ u8 bd_type, cipher;
+
+ memset(sec_sqe, 0, sizeof(struct sec_sqe));
+
+ sec_sqe->type2.c_key_addr = cpu_to_le64(c_ctx->c_key_dma);
+ sec_sqe->type2.c_ivin_addr = cpu_to_le64(c_req->c_ivin_dma);
+ sec_sqe->type2.data_src_addr = cpu_to_le64(c_req->c_in_dma);
+ sec_sqe->type2.data_dst_addr = cpu_to_le64(c_req->c_out_dma);
+
+ sec_sqe->type2.icvw_kmode |= cpu_to_le16(((u16)c_ctx->c_mode) <<
+ SEC_CMODE_OFFSET);
+ sec_sqe->type2.c_alg = c_ctx->c_alg;
+ sec_sqe->type2.icvw_kmode |= cpu_to_le16(((u16)c_ctx->c_key_len) <<
+ SEC_CKEY_OFFSET);
+
+ bd_type = SEC_BD_TYPE2;
+ if (c_req->encrypt)
+ cipher = SEC_CIPHER_ENC << SEC_CIPHER_OFFSET;
+ else
+ cipher = SEC_CIPHER_DEC << SEC_CIPHER_OFFSET;
+ sec_sqe->type_cipher_auth = bd_type | cipher;
+
+ sa_type = SEC_SGL << SEC_SRC_SGL_OFFSET;
+ scene = SEC_COMM_SCENE << SEC_SCENE_OFFSET;
+ if (c_req->c_in_dma != c_req->c_out_dma)
+ de = 0x1 << SEC_DE_OFFSET;
+
+ sec_sqe->sds_sa_type = (de | scene | sa_type);
+
+ /* Just set DST address type */
+ da_type = SEC_SGL << SEC_DST_SGL_OFFSET;
+ sec_sqe->sdm_addr_type |= da_type;
+
+ sec_sqe->type2.clen_ivhlen |= cpu_to_le32(c_req->c_len);
+ sec_sqe->type2.tag = cpu_to_le16((u16)req->req_id);
+
+ return 0;
+}
+
+static void sec_update_iv(struct sec_req *req)
+{
+ struct skcipher_request *sk_req = req->c_req.sk_req;
+ u32 iv_size = req->ctx->c_ctx.ivsize;
+ struct scatterlist *sgl;
+ size_t sz;
+
+ if (req->c_req.encrypt)
+ sgl = sk_req->dst;
+ else
+ sgl = sk_req->src;
+
+ sz = sg_pcopy_to_buffer(sgl, sg_nents(sgl), sk_req->iv,
+ iv_size, sk_req->cryptlen - iv_size);
+ if (sz != iv_size)
+ dev_err(SEC_CTX_DEV(req->ctx), "copy output iv error!\n");
+}
+
+static void sec_skcipher_callback(struct sec_ctx *ctx, struct sec_req *req)
+{
+ struct skcipher_request *sk_req = req->c_req.sk_req;
+ struct sec_qp_ctx *qp_ctx = req->qp_ctx;
+
+ atomic_dec(&qp_ctx->pending_reqs);
+ sec_free_req_id(req);
+
+ /* IV output at encrypto of CBC mode */
+ if (ctx->c_ctx.c_mode == SEC_CMODE_CBC && req->c_req.encrypt)
+ sec_update_iv(req);
+
+ if (__sync_bool_compare_and_swap(&req->fake_busy, 1, 0))
+ sk_req->base.complete(&sk_req->base, -EINPROGRESS);
+
+ sk_req->base.complete(&sk_req->base, req->err_type);
+}
+
+static void sec_request_uninit(struct sec_ctx *ctx, struct sec_req *req)
+{
+ struct sec_qp_ctx *qp_ctx = req->qp_ctx;
+
+ atomic_dec(&qp_ctx->pending_reqs);
+ sec_free_req_id(req);
+ sec_put_queue_id(ctx, req);
+}
+
+static int sec_request_init(struct sec_ctx *ctx, struct sec_req *req)
+{
+ struct sec_qp_ctx *qp_ctx;
+ int issue_id, ret;
+
+ /* To load balance */
+ issue_id = sec_get_queue_id(ctx, req);
+ qp_ctx = &ctx->qp_ctx[issue_id];
+
+ req->req_id = sec_alloc_req_id(req, qp_ctx);
+ if (req->req_id < 0) {
+ sec_put_queue_id(ctx, req);
+ return req->req_id;
+ }
+
+ if (ctx->fake_req_limit <= atomic_inc_return(&qp_ctx->pending_reqs))
+ req->fake_busy = 1;
+ else
+ req->fake_busy = 0;
+
+ ret = ctx->req_op->get_res(ctx, req);
+ if (ret) {
+ atomic_dec(&qp_ctx->pending_reqs);
+ sec_request_uninit(ctx, req);
+ dev_err(SEC_CTX_DEV(ctx), "get resources failed!\n");
+ }
+
+ return ret;
+}
+
+static int sec_process(struct sec_ctx *ctx, struct sec_req *req)
+{
+ int ret;
+
+ ret = sec_request_init(ctx, req);
+ if (ret)
+ return ret;
+
+ ret = sec_request_transfer(ctx, req);
+ if (ret)
+ goto err_uninit_req;
+
+ /* Output IV as decrypto */
+ if (ctx->c_ctx.c_mode == SEC_CMODE_CBC && !req->c_req.encrypt)
+ sec_update_iv(req);
+
+ ret = ctx->req_op->bd_send(ctx, req);
+ if (ret != -EBUSY && ret != -EINPROGRESS) {
+ dev_err(SEC_CTX_DEV(ctx), "send sec request failed!\n");
+ goto err_send_req;
+ }
+
+ return ret;
+
+err_send_req:
+ /* As failing, restore the IV from user */
+ if (ctx->c_ctx.c_mode == SEC_CMODE_CBC && !req->c_req.encrypt)
+ memcpy(req->c_req.sk_req->iv, req->c_req.c_ivin,
+ ctx->c_ctx.ivsize);
+
+ sec_request_untransfer(ctx, req);
+err_uninit_req:
+ sec_request_uninit(ctx, req);
+
+ return ret;
+}
+
+static struct sec_req_op sec_req_ops_tbl = {
+ .get_res = sec_skcipher_get_res,
+ .resource_alloc = sec_skcipher_resource_alloc,
+ .resource_free = sec_skcipher_resource_free,
+ .buf_map = sec_skcipher_sgl_map,
+ .buf_unmap = sec_skcipher_sgl_unmap,
+ .do_transfer = sec_skcipher_copy_iv,
+ .bd_fill = sec_skcipher_bd_fill,
+ .bd_send = sec_bd_send,
+ .callback = sec_skcipher_callback,
+ .process = sec_process,
+};
+
+static int sec_skcipher_ctx_init(struct crypto_skcipher *tfm)
+{
+ struct sec_ctx *ctx = crypto_skcipher_ctx(tfm);
+
+ ctx->req_op = &sec_req_ops_tbl;
+
+ return sec_skcipher_init(tfm);
+}
+
+static void sec_skcipher_ctx_exit(struct crypto_skcipher *tfm)
+{
+ sec_skcipher_exit(tfm);
+}
+
+static int sec_skcipher_param_check(struct sec_ctx *ctx,
+ struct skcipher_request *sk_req)
+{
+ u8 c_alg = ctx->c_ctx.c_alg;
+ struct device *dev = SEC_CTX_DEV(ctx);
+
+ if (!sk_req->src || !sk_req->dst) {
+ dev_err(dev, "skcipher input param error!\n");
+ return -EINVAL;
+ }
+
+ if (c_alg == SEC_CALG_3DES) {
+ if (sk_req->cryptlen & (DES3_EDE_BLOCK_SIZE - 1)) {
+ dev_err(dev, "skcipher 3des input length error!\n");
+ return -EINVAL;
+ }
+ return 0;
+ } else if (c_alg == SEC_CALG_AES || c_alg == SEC_CALG_SM4) {
+ if (sk_req->cryptlen & (AES_BLOCK_SIZE - 1)) {
+ dev_err(dev, "skcipher aes input length error!\n");
+ return -EINVAL;
+ }
+ return 0;
+ }
+
+ dev_err(dev, "skcipher algorithm error!\n");
+ return -EINVAL;
+}
+
+static int sec_skcipher_crypto(struct skcipher_request *sk_req, bool encrypt)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(sk_req);
+ struct sec_req *req = skcipher_request_ctx(sk_req);
+ struct sec_ctx *ctx = crypto_skcipher_ctx(tfm);
+ int ret;
+
+ if (!sk_req->cryptlen)
+ return 0;
+
+ ret = sec_skcipher_param_check(ctx, sk_req);
+ if (ret)
+ return ret;
+
+ req->c_req.sk_req = sk_req;
+ req->c_req.encrypt = encrypt;
+ req->ctx = ctx;
+
+ return ctx->req_op->process(ctx, req);
+}
+
+static int sec_skcipher_encrypt(struct skcipher_request *sk_req)
+{
+ return sec_skcipher_crypto(sk_req, true);
+}
+
+static int sec_skcipher_decrypt(struct skcipher_request *sk_req)
+{
+ return sec_skcipher_crypto(sk_req, false);
+}
+
+#define SEC_SKCIPHER_GEN_ALG(sec_cra_name, sec_set_key, sec_min_key_size, \
+ sec_max_key_size, ctx_init, ctx_exit, blk_size, iv_size)\
+{\
+ .base = {\
+ .cra_name = sec_cra_name,\
+ .cra_driver_name = "hisi_sec_"sec_cra_name,\
+ .cra_priority = SEC_PRIORITY,\
+ .cra_flags = CRYPTO_ALG_ASYNC,\
+ .cra_blocksize = blk_size,\
+ .cra_ctxsize = sizeof(struct sec_ctx),\
+ .cra_module = THIS_MODULE,\
+ },\
+ .init = ctx_init,\
+ .exit = ctx_exit,\
+ .setkey = sec_set_key,\
+ .decrypt = sec_skcipher_decrypt,\
+ .encrypt = sec_skcipher_encrypt,\
+ .min_keysize = sec_min_key_size,\
+ .max_keysize = sec_max_key_size,\
+ .ivsize = iv_size,\
+},
+
+#define SEC_SKCIPHER_ALG(name, key_func, min_key_size, \
+ max_key_size, blk_size, iv_size) \
+ SEC_SKCIPHER_GEN_ALG(name, key_func, min_key_size, max_key_size, \
+ sec_skcipher_ctx_init, sec_skcipher_ctx_exit, blk_size, iv_size)
+
+static struct skcipher_alg sec_algs[] = {
+ SEC_SKCIPHER_ALG("ecb(aes)", sec_setkey_aes_ecb,
+ AES_MIN_KEY_SIZE, AES_MAX_KEY_SIZE,
+ AES_BLOCK_SIZE, 0)
+
+ SEC_SKCIPHER_ALG("cbc(aes)", sec_setkey_aes_cbc,
+ AES_MIN_KEY_SIZE, AES_MAX_KEY_SIZE,
+ AES_BLOCK_SIZE, AES_BLOCK_SIZE)
+
+ SEC_SKCIPHER_ALG("xts(aes)", sec_setkey_aes_xts,
+ SEC_XTS_MIN_KEY_SIZE, SEC_XTS_MAX_KEY_SIZE,
+ AES_BLOCK_SIZE, AES_BLOCK_SIZE)
+
+ SEC_SKCIPHER_ALG("ecb(des3_ede)", sec_setkey_3des_ecb,
+ SEC_DES3_2KEY_SIZE, SEC_DES3_3KEY_SIZE,
+ DES3_EDE_BLOCK_SIZE, 0)
+
+ SEC_SKCIPHER_ALG("cbc(des3_ede)", sec_setkey_3des_cbc,
+ SEC_DES3_2KEY_SIZE, SEC_DES3_3KEY_SIZE,
+ DES3_EDE_BLOCK_SIZE, DES3_EDE_BLOCK_SIZE)
+
+ SEC_SKCIPHER_ALG("xts(sm4)", sec_setkey_sm4_xts,
+ SEC_XTS_MIN_KEY_SIZE, SEC_XTS_MIN_KEY_SIZE,
+ AES_BLOCK_SIZE, AES_BLOCK_SIZE)
+
+ SEC_SKCIPHER_ALG("cbc(sm4)", sec_setkey_sm4_cbc,
+ AES_MIN_KEY_SIZE, AES_MIN_KEY_SIZE,
+ AES_BLOCK_SIZE, AES_BLOCK_SIZE)
+};
+
+int sec_register_to_crypto(void)
+{
+ int ret = 0;
+
+ /* To avoid repeat register */
+ mutex_lock(&sec_algs_lock);
+ if (++sec_active_devs == 1)
+ ret = crypto_register_skciphers(sec_algs, ARRAY_SIZE(sec_algs));
+ mutex_unlock(&sec_algs_lock);
+
+ return ret;
+}
+
+void sec_unregister_from_crypto(void)
+{
+ mutex_lock(&sec_algs_lock);
+ if (--sec_active_devs == 0)
+ crypto_unregister_skciphers(sec_algs, ARRAY_SIZE(sec_algs));
+ mutex_unlock(&sec_algs_lock);
+}
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2019 HiSilicon Limited. */
+
+#include <linux/acpi.h>
+#include <linux/aer.h>
+#include <linux/bitops.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/seq_file.h>
+#include <linux/topology.h>
+
+#include "sec.h"
+
+#define SEC_QUEUE_NUM_V1 4096
+#define SEC_QUEUE_NUM_V2 1024
+#define SEC_PF_PCI_DEVICE_ID 0xa255
+
+#define SEC_XTS_MIV_ENABLE_REG 0x301384
+#define SEC_XTS_MIV_ENABLE_MSK 0x7FFFFFFF
+#define SEC_XTS_MIV_DISABLE_MSK 0xFFFFFFFF
+#define SEC_BD_ERR_CHK_EN1 0xfffff7fd
+#define SEC_BD_ERR_CHK_EN2 0xffffbfff
+
+#define SEC_SQE_SIZE 128
+#define SEC_SQ_SIZE (SEC_SQE_SIZE * QM_Q_DEPTH)
+#define SEC_PF_DEF_Q_NUM 64
+#define SEC_PF_DEF_Q_BASE 0
+#define SEC_CTX_Q_NUM_DEF 24
+
+#define SEC_ENGINE_PF_CFG_OFF 0x300000
+#define SEC_ACC_COMMON_REG_OFF 0x1000
+#define SEC_CORE_INT_SOURCE 0x301010
+#define SEC_CORE_INT_MASK 0x301000
+#define SEC_CORE_INT_STATUS 0x301008
+#define SEC_CORE_SRAM_ECC_ERR_INFO 0x301C14
+#define SEC_ECC_NUM(err) (((err) >> 16) & 0xFF)
+#define SEC_ECC_ADDR(err) ((err) >> 0)
+#define SEC_CORE_INT_DISABLE 0x0
+#define SEC_CORE_INT_ENABLE 0x1ff
+
+#define SEC_RAS_CE_REG 0x50
+#define SEC_RAS_FE_REG 0x54
+#define SEC_RAS_NFE_REG 0x58
+#define SEC_RAS_CE_ENB_MSK 0x88
+#define SEC_RAS_FE_ENB_MSK 0x0
+#define SEC_RAS_NFE_ENB_MSK 0x177
+#define SEC_RAS_DISABLE 0x0
+#define SEC_MEM_START_INIT_REG 0x0100
+#define SEC_MEM_INIT_DONE_REG 0x0104
+#define SEC_QM_ABNORMAL_INT_MASK 0x100004
+
+#define SEC_CONTROL_REG 0x0200
+#define SEC_TRNG_EN_SHIFT 8
+#define SEC_CLK_GATE_ENABLE BIT(3)
+#define SEC_CLK_GATE_DISABLE (~BIT(3))
+#define SEC_AXI_SHUTDOWN_ENABLE BIT(12)
+#define SEC_AXI_SHUTDOWN_DISABLE 0xFFFFEFFF
+
+#define SEC_INTERFACE_USER_CTRL0_REG 0x0220
+#define SEC_INTERFACE_USER_CTRL1_REG 0x0224
+#define SEC_BD_ERR_CHK_EN_REG1 0x0384
+#define SEC_BD_ERR_CHK_EN_REG2 0x038c
+
+#define SEC_USER0_SMMU_NORMAL (BIT(23) | BIT(15))
+#define SEC_USER1_SMMU_NORMAL (BIT(31) | BIT(23) | BIT(15) | BIT(7))
+#define SEC_CORE_INT_STATUS_M_ECC BIT(2)
+
+#define SEC_DELAY_10_US 10
+#define SEC_POLL_TIMEOUT_US 1000
+
+#define SEC_ADDR(qm, offset) ((qm)->io_base + (offset) + \
+ SEC_ENGINE_PF_CFG_OFF + SEC_ACC_COMMON_REG_OFF)
+
+struct sec_hw_error {
+ u32 int_msk;
+ const char *msg;
+};
+
+static const char sec_name[] = "hisi_sec2";
+static LIST_HEAD(sec_list);
+static DEFINE_MUTEX(sec_list_lock);
+
+static const struct sec_hw_error sec_hw_errors[] = {
+ {.int_msk = BIT(0), .msg = "sec_axi_rresp_err_rint"},
+ {.int_msk = BIT(1), .msg = "sec_axi_bresp_err_rint"},
+ {.int_msk = BIT(2), .msg = "sec_ecc_2bit_err_rint"},
+ {.int_msk = BIT(3), .msg = "sec_ecc_1bit_err_rint"},
+ {.int_msk = BIT(4), .msg = "sec_req_trng_timeout_rint"},
+ {.int_msk = BIT(5), .msg = "sec_fsm_hbeat_rint"},
+ {.int_msk = BIT(6), .msg = "sec_channel_req_rng_timeout_rint"},
+ {.int_msk = BIT(7), .msg = "sec_bd_err_rint"},
+ {.int_msk = BIT(8), .msg = "sec_chain_buff_err_rint"},
+ { /* sentinel */ }
+};
+
+struct sec_dev *sec_find_device(int node)
+{
+#define SEC_NUMA_MAX_DISTANCE 100
+ int min_distance = SEC_NUMA_MAX_DISTANCE;
+ int dev_node = 0, free_qp_num = 0;
+ struct sec_dev *sec, *ret = NULL;
+ struct hisi_qm *qm;
+ struct device *dev;
+
+ mutex_lock(&sec_list_lock);
+ list_for_each_entry(sec, &sec_list, list) {
+ qm = &sec->qm;
+ dev = &qm->pdev->dev;
+#ifdef CONFIG_NUMA
+ dev_node = dev->numa_node;
+ if (dev_node < 0)
+ dev_node = 0;
+#endif
+ if (node_distance(dev_node, node) < min_distance) {
+ free_qp_num = hisi_qm_get_free_qp_num(qm);
+ if (free_qp_num >= sec->ctx_q_num) {
+ ret = sec;
+ min_distance = node_distance(dev_node, node);
+ }
+ }
+ }
+ mutex_unlock(&sec_list_lock);
+
+ return ret;
+}
+
+static int sec_pf_q_num_set(const char *val, const struct kernel_param *kp)
+{
+ struct pci_dev *pdev;
+ u32 n, q_num;
+ u8 rev_id;
+ int ret;
+
+ if (!val)
+ return -EINVAL;
+
+ pdev = pci_get_device(PCI_VENDOR_ID_HUAWEI,
+ SEC_PF_PCI_DEVICE_ID, NULL);
+ if (!pdev) {
+ q_num = min_t(u32, SEC_QUEUE_NUM_V1, SEC_QUEUE_NUM_V2);
+ pr_info("No device, suppose queue number is %d!\n", q_num);
+ } else {
+ rev_id = pdev->revision;
+
+ switch (rev_id) {
+ case QM_HW_V1:
+ q_num = SEC_QUEUE_NUM_V1;
+ break;
+ case QM_HW_V2:
+ q_num = SEC_QUEUE_NUM_V2;
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+
+ ret = kstrtou32(val, 10, &n);
+ if (ret || !n || n > q_num)
+ return -EINVAL;
+
+ return param_set_int(val, kp);
+}
+
+static const struct kernel_param_ops sec_pf_q_num_ops = {
+ .set = sec_pf_q_num_set,
+ .get = param_get_int,
+};
+static u32 pf_q_num = SEC_PF_DEF_Q_NUM;
+module_param_cb(pf_q_num, &sec_pf_q_num_ops, &pf_q_num, 0444);
+MODULE_PARM_DESC(pf_q_num, "Number of queues in PF(v1 0-4096, v2 0-1024)");
+
+static int sec_ctx_q_num_set(const char *val, const struct kernel_param *kp)
+{
+ u32 ctx_q_num;
+ int ret;
+
+ if (!val)
+ return -EINVAL;
+
+ ret = kstrtou32(val, 10, &ctx_q_num);
+ if (ret)
+ return -EINVAL;
+
+ if (!ctx_q_num || ctx_q_num > QM_Q_DEPTH || ctx_q_num & 0x1) {
+ pr_err("ctx queue num[%u] is invalid!\n", ctx_q_num);
+ return -EINVAL;
+ }
+
+ return param_set_int(val, kp);
+}
+
+static const struct kernel_param_ops sec_ctx_q_num_ops = {
+ .set = sec_ctx_q_num_set,
+ .get = param_get_int,
+};
+static u32 ctx_q_num = SEC_CTX_Q_NUM_DEF;
+module_param_cb(ctx_q_num, &sec_ctx_q_num_ops, &ctx_q_num, 0444);
+MODULE_PARM_DESC(ctx_q_num, "Number of queue in ctx (2, 4, 6, ..., 1024)");
+
+static const struct pci_device_id sec_dev_ids[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, SEC_PF_PCI_DEVICE_ID) },
+ { 0, }
+};
+MODULE_DEVICE_TABLE(pci, sec_dev_ids);
+
+static inline void sec_add_to_list(struct sec_dev *sec)
+{
+ mutex_lock(&sec_list_lock);
+ list_add_tail(&sec->list, &sec_list);
+ mutex_unlock(&sec_list_lock);
+}
+
+static inline void sec_remove_from_list(struct sec_dev *sec)
+{
+ mutex_lock(&sec_list_lock);
+ list_del(&sec->list);
+ mutex_unlock(&sec_list_lock);
+}
+
+static u8 sec_get_endian(struct sec_dev *sec)
+{
+ struct hisi_qm *qm = &sec->qm;
+ u32 reg;
+
+ reg = readl_relaxed(qm->io_base + SEC_ENGINE_PF_CFG_OFF +
+ SEC_ACC_COMMON_REG_OFF + SEC_CONTROL_REG);
+
+ /* BD little endian mode */
+ if (!(reg & BIT(0)))
+ return SEC_LE;
+
+ /* BD 32-bits big endian mode */
+ else if (!(reg & BIT(1)))
+ return SEC_32BE;
+
+ /* BD 64-bits big endian mode */
+ else
+ return SEC_64BE;
+}
+
+static int sec_engine_init(struct sec_dev *sec)
+{
+ struct hisi_qm *qm = &sec->qm;
+ int ret;
+ u32 reg;
+
+ /* disable clock gate control */
+ reg = readl_relaxed(SEC_ADDR(qm, SEC_CONTROL_REG));
+ reg &= SEC_CLK_GATE_DISABLE;
+ writel_relaxed(reg, SEC_ADDR(qm, SEC_CONTROL_REG));
+
+ writel_relaxed(0x1, SEC_ADDR(qm, SEC_MEM_START_INIT_REG));
+
+ ret = readl_relaxed_poll_timeout(SEC_ADDR(qm, SEC_MEM_INIT_DONE_REG),
+ reg, reg & 0x1, SEC_DELAY_10_US,
+ SEC_POLL_TIMEOUT_US);
+ if (ret) {
+ dev_err(&qm->pdev->dev, "fail to init sec mem\n");
+ return ret;
+ }
+
+ reg = readl_relaxed(SEC_ADDR(qm, SEC_CONTROL_REG));
+ reg |= (0x1 << SEC_TRNG_EN_SHIFT);
+ writel_relaxed(reg, SEC_ADDR(qm, SEC_CONTROL_REG));
+
+ reg = readl_relaxed(SEC_ADDR(qm, SEC_INTERFACE_USER_CTRL0_REG));
+ reg |= SEC_USER0_SMMU_NORMAL;
+ writel_relaxed(reg, SEC_ADDR(qm, SEC_INTERFACE_USER_CTRL0_REG));
+
+ reg = readl_relaxed(SEC_ADDR(qm, SEC_INTERFACE_USER_CTRL1_REG));
+ reg |= SEC_USER1_SMMU_NORMAL;
+ writel_relaxed(reg, SEC_ADDR(qm, SEC_INTERFACE_USER_CTRL1_REG));
+
+ writel_relaxed(SEC_BD_ERR_CHK_EN1,
+ SEC_ADDR(qm, SEC_BD_ERR_CHK_EN_REG1));
+ writel_relaxed(SEC_BD_ERR_CHK_EN2,
+ SEC_ADDR(qm, SEC_BD_ERR_CHK_EN_REG2));
+
+ /* enable clock gate control */
+ reg = readl_relaxed(SEC_ADDR(qm, SEC_CONTROL_REG));
+ reg |= SEC_CLK_GATE_ENABLE;
+ writel_relaxed(reg, SEC_ADDR(qm, SEC_CONTROL_REG));
+
+ /* config endian */
+ reg = readl_relaxed(SEC_ADDR(qm, SEC_CONTROL_REG));
+ reg |= sec_get_endian(sec);
+ writel_relaxed(reg, SEC_ADDR(qm, SEC_CONTROL_REG));
+
+ /* Enable sm4 xts mode multiple iv */
+ writel_relaxed(SEC_XTS_MIV_ENABLE_MSK,
+ qm->io_base + SEC_XTS_MIV_ENABLE_REG);
+
+ return 0;
+}
+
+static int sec_set_user_domain_and_cache(struct sec_dev *sec)
+{
+ struct hisi_qm *qm = &sec->qm;
+
+ /* qm user domain */
+ writel(AXUSER_BASE, qm->io_base + QM_ARUSER_M_CFG_1);
+ writel(ARUSER_M_CFG_ENABLE, qm->io_base + QM_ARUSER_M_CFG_ENABLE);
+ writel(AXUSER_BASE, qm->io_base + QM_AWUSER_M_CFG_1);
+ writel(AWUSER_M_CFG_ENABLE, qm->io_base + QM_AWUSER_M_CFG_ENABLE);
+ writel(WUSER_M_CFG_ENABLE, qm->io_base + QM_WUSER_M_CFG_ENABLE);
+
+ /* qm cache */
+ writel(AXI_M_CFG, qm->io_base + QM_AXI_M_CFG);
+ writel(AXI_M_CFG_ENABLE, qm->io_base + QM_AXI_M_CFG_ENABLE);
+
+ /* disable FLR triggered by BME(bus master enable) */
+ writel(PEH_AXUSER_CFG, qm->io_base + QM_PEH_AXUSER_CFG);
+ writel(PEH_AXUSER_CFG_ENABLE, qm->io_base + QM_PEH_AXUSER_CFG_ENABLE);
+
+ /* enable sqc,cqc writeback */
+ writel(SQC_CACHE_ENABLE | CQC_CACHE_ENABLE | SQC_CACHE_WB_ENABLE |
+ CQC_CACHE_WB_ENABLE | FIELD_PREP(SQC_CACHE_WB_THRD, 1) |
+ FIELD_PREP(CQC_CACHE_WB_THRD, 1), qm->io_base + QM_CACHE_CTL);
+
+ return sec_engine_init(sec);
+}
+
+static void sec_hw_error_enable(struct sec_dev *sec)
+{
+ struct hisi_qm *qm = &sec->qm;
+ u32 val;
+
+ if (qm->ver == QM_HW_V1) {
+ writel(SEC_CORE_INT_DISABLE, qm->io_base + SEC_CORE_INT_MASK);
+ dev_info(&qm->pdev->dev, "V1 not support hw error handle\n");
+ return;
+ }
+
+ val = readl(qm->io_base + SEC_CONTROL_REG);
+
+ /* clear SEC hw error source if having */
+ writel(SEC_CORE_INT_DISABLE, qm->io_base + SEC_CORE_INT_SOURCE);
+
+ /* enable SEC hw error interrupts */
+ writel(SEC_CORE_INT_ENABLE, qm->io_base + SEC_CORE_INT_MASK);
+
+ /* enable RAS int */
+ writel(SEC_RAS_CE_ENB_MSK, qm->io_base + SEC_RAS_CE_REG);
+ writel(SEC_RAS_FE_ENB_MSK, qm->io_base + SEC_RAS_FE_REG);
+ writel(SEC_RAS_NFE_ENB_MSK, qm->io_base + SEC_RAS_NFE_REG);
+
+ /* enable SEC block master OOO when m-bit error occur */
+ val = val | SEC_AXI_SHUTDOWN_ENABLE;
+
+ writel(val, qm->io_base + SEC_CONTROL_REG);
+}
+
+static void sec_hw_error_disable(struct sec_dev *sec)
+{
+ struct hisi_qm *qm = &sec->qm;
+ u32 val;
+
+ val = readl(qm->io_base + SEC_CONTROL_REG);
+
+ /* disable RAS int */
+ writel(SEC_RAS_DISABLE, qm->io_base + SEC_RAS_CE_REG);
+ writel(SEC_RAS_DISABLE, qm->io_base + SEC_RAS_FE_REG);
+ writel(SEC_RAS_DISABLE, qm->io_base + SEC_RAS_NFE_REG);
+
+ /* disable SEC hw error interrupts */
+ writel(SEC_CORE_INT_DISABLE, qm->io_base + SEC_CORE_INT_MASK);
+
+ /* disable SEC block master OOO when m-bit error occur */
+ val = val & SEC_AXI_SHUTDOWN_DISABLE;
+
+ writel(val, qm->io_base + SEC_CONTROL_REG);
+}
+
+static void sec_hw_error_init(struct sec_dev *sec)
+{
+ hisi_qm_hw_error_init(&sec->qm, QM_BASE_CE,
+ QM_BASE_NFE | QM_ACC_DO_TASK_TIMEOUT
+ | QM_ACC_WB_NOT_READY_TIMEOUT, 0,
+ QM_DB_RANDOM_INVALID);
+ sec_hw_error_enable(sec);
+}
+
+static void sec_hw_error_uninit(struct sec_dev *sec)
+{
+ sec_hw_error_disable(sec);
+ writel(GENMASK(12, 0), sec->qm.io_base + SEC_QM_ABNORMAL_INT_MASK);
+}
+
+static int sec_pf_probe_init(struct sec_dev *sec)
+{
+ struct hisi_qm *qm = &sec->qm;
+ int ret;
+
+ switch (qm->ver) {
+ case QM_HW_V1:
+ qm->ctrl_qp_num = SEC_QUEUE_NUM_V1;
+ break;
+
+ case QM_HW_V2:
+ qm->ctrl_qp_num = SEC_QUEUE_NUM_V2;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ ret = sec_set_user_domain_and_cache(sec);
+ if (ret)
+ return ret;
+
+ sec_hw_error_init(sec);
+
+ return 0;
+}
+
+static int sec_qm_init(struct hisi_qm *qm, struct pci_dev *pdev)
+{
+ enum qm_hw_ver rev_id;
+
+ rev_id = hisi_qm_get_hw_version(pdev);
+ if (rev_id == QM_HW_UNKNOWN)
+ return -ENODEV;
+
+ qm->pdev = pdev;
+ qm->ver = rev_id;
+
+ qm->sqe_size = SEC_SQE_SIZE;
+ qm->dev_name = sec_name;
+ qm->fun_type = (pdev->device == SEC_PF_PCI_DEVICE_ID) ?
+ QM_HW_PF : QM_HW_VF;
+ qm->use_dma_api = true;
+
+ return hisi_qm_init(qm);
+}
+
+static void sec_qm_uninit(struct hisi_qm *qm)
+{
+ hisi_qm_uninit(qm);
+}
+
+static int sec_probe_init(struct hisi_qm *qm, struct sec_dev *sec)
+{
+ qm->qp_base = SEC_PF_DEF_Q_BASE;
+ qm->qp_num = pf_q_num;
+
+ return sec_pf_probe_init(sec);
+}
+
+static void sec_probe_uninit(struct sec_dev *sec)
+{
+ sec_hw_error_uninit(sec);
+}
+
+static int sec_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct sec_dev *sec;
+ struct hisi_qm *qm;
+ int ret;
+
+ sec = devm_kzalloc(&pdev->dev, sizeof(*sec), GFP_KERNEL);
+ if (!sec)
+ return -ENOMEM;
+
+ pci_set_drvdata(pdev, sec);
+
+ sec->ctx_q_num = ctx_q_num;
+
+ qm = &sec->qm;
+
+ ret = sec_qm_init(qm, pdev);
+ if (ret) {
+ pci_err(pdev, "Failed to pre init qm!\n");
+ return ret;
+ }
+
+ ret = sec_probe_init(qm, sec);
+ if (ret) {
+ pci_err(pdev, "Failed to probe!\n");
+ goto err_qm_uninit;
+ }
+
+ ret = hisi_qm_start(qm);
+ if (ret) {
+ pci_err(pdev, "Failed to start sec qm!\n");
+ goto err_probe_uninit;
+ }
+
+ sec_add_to_list(sec);
+
+ ret = sec_register_to_crypto();
+ if (ret < 0) {
+ pr_err("Failed to register driver to crypto.\n");
+ goto err_remove_from_list;
+ }
+
+ return 0;
+
+err_remove_from_list:
+ sec_remove_from_list(sec);
+ hisi_qm_stop(qm);
+
+err_probe_uninit:
+ sec_probe_uninit(sec);
+
+err_qm_uninit:
+ sec_qm_uninit(qm);
+
+ return ret;
+}
+
+static void sec_remove(struct pci_dev *pdev)
+{
+ struct sec_dev *sec = pci_get_drvdata(pdev);
+ struct hisi_qm *qm = &sec->qm;
+
+ sec_unregister_from_crypto();
+
+ sec_remove_from_list(sec);
+
+ (void)hisi_qm_stop(qm);
+
+ sec_probe_uninit(sec);
+
+ sec_qm_uninit(qm);
+}
+
+static void sec_log_hw_error(struct sec_dev *sec, u32 err_sts)
+{
+ const struct sec_hw_error *errs = sec_hw_errors;
+ struct device *dev = &sec->qm.pdev->dev;
+ u32 err_val;
+
+ while (errs->msg) {
+ if (errs->int_msk & err_sts) {
+ dev_err(dev, "%s [error status=0x%x] found\n",
+ errs->msg, errs->int_msk);
+
+ if (SEC_CORE_INT_STATUS_M_ECC & err_sts) {
+ err_val = readl(sec->qm.io_base +
+ SEC_CORE_SRAM_ECC_ERR_INFO);
+ dev_err(dev, "multi ecc sram num=0x%x\n",
+ SEC_ECC_NUM(err_val));
+ dev_err(dev, "multi ecc sram addr=0x%x\n",
+ SEC_ECC_ADDR(err_val));
+ }
+ }
+ errs++;
+ }
+}
+
+static pci_ers_result_t sec_hw_error_handle(struct sec_dev *sec)
+{
+ u32 err_sts;
+
+ /* read err sts */
+ err_sts = readl(sec->qm.io_base + SEC_CORE_INT_STATUS);
+ if (err_sts) {
+ sec_log_hw_error(sec, err_sts);
+
+ /* clear error interrupts */
+ writel(err_sts, sec->qm.io_base + SEC_CORE_INT_SOURCE);
+
+ return PCI_ERS_RESULT_NEED_RESET;
+ }
+
+ return PCI_ERS_RESULT_RECOVERED;
+}
+
+static pci_ers_result_t sec_process_hw_error(struct pci_dev *pdev)
+{
+ struct sec_dev *sec = pci_get_drvdata(pdev);
+ pci_ers_result_t qm_ret, sec_ret;
+
+ if (!sec) {
+ pci_err(pdev, "Can't recover error during device init\n");
+ return PCI_ERS_RESULT_NONE;
+ }
+
+ /* log qm error */
+ qm_ret = hisi_qm_hw_error_handle(&sec->qm);
+
+ /* log sec error */
+ sec_ret = sec_hw_error_handle(sec);
+
+ return (qm_ret == PCI_ERS_RESULT_NEED_RESET ||
+ sec_ret == PCI_ERS_RESULT_NEED_RESET) ?
+ PCI_ERS_RESULT_NEED_RESET : PCI_ERS_RESULT_RECOVERED;
+}
+
+static pci_ers_result_t sec_error_detected(struct pci_dev *pdev,
+ pci_channel_state_t state)
+{
+ pci_info(pdev, "PCI error detected, state(=%d)!!\n", state);
+ if (state == pci_channel_io_perm_failure)
+ return PCI_ERS_RESULT_DISCONNECT;
+
+ return sec_process_hw_error(pdev);
+}
+
+static const struct pci_error_handlers sec_err_handler = {
+ .error_detected = sec_error_detected,
+};
+
+static struct pci_driver sec_pci_driver = {
+ .name = "hisi_sec2",
+ .id_table = sec_dev_ids,
+ .probe = sec_probe,
+ .remove = sec_remove,
+ .err_handler = &sec_err_handler,
+};
+
+static int __init sec_init(void)
+{
+ int ret;
+
+ ret = pci_register_driver(&sec_pci_driver);
+ if (ret < 0) {
+ pr_err("Failed to register pci driver.\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static void __exit sec_exit(void)
+{
+ pci_unregister_driver(&sec_pci_driver);
+}
+
+module_init(sec_init);
+module_exit(sec_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Zaibo Xu <xuzaibo@huawei.com>");
+MODULE_AUTHOR("Longfang Liu <liulongfang@huawei.com>");
+MODULE_AUTHOR("Wei Zhang <zhangwei375@huawei.com>");
+MODULE_DESCRIPTION("Driver for HiSilicon SEC accelerator");
projects / platform / kernel / linux-rpi.git / commitdiff