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-rw-r--r--drivers/crypto/Kconfig2
-rw-r--r--drivers/crypto/Makefile1
-rw-r--r--drivers/crypto/hisilicon/Kconfig14
-rw-r--r--drivers/crypto/hisilicon/Makefile2
-rw-r--r--drivers/crypto/hisilicon/sec/Makefile3
-rw-r--r--drivers/crypto/hisilicon/sec/sec_algs.c1122
-rw-r--r--drivers/crypto/hisilicon/sec/sec_drv.c1323
-rw-r--r--drivers/crypto/hisilicon/sec/sec_drv.h428
8 files changed, 2895 insertions, 0 deletions
diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index 2bf799ba7674..a8c4ce07fc9d 100644
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -759,4 +759,6 @@ config CRYPTO_DEV_CCREE
cryptographic operations on the system REE.
If unsure say Y.
+source "drivers/crypto/hisilicon/Kconfig"
+
endif # CRYPTO_HW
diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile
index 3602875c4f80..c23396f32c8a 100644
--- a/drivers/crypto/Makefile
+++ b/drivers/crypto/Makefile
@@ -46,3 +46,4 @@ obj-$(CONFIG_CRYPTO_DEV_VMX) += vmx/
obj-$(CONFIG_CRYPTO_DEV_BCM_SPU) += bcm/
obj-$(CONFIG_CRYPTO_DEV_SAFEXCEL) += inside-secure/
obj-$(CONFIG_CRYPTO_DEV_ARTPEC6) += axis/
+obj-y += hisilicon/
diff --git a/drivers/crypto/hisilicon/Kconfig b/drivers/crypto/hisilicon/Kconfig
new file mode 100644
index 000000000000..8ca9c503bcb0
--- /dev/null
+++ b/drivers/crypto/hisilicon/Kconfig
@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: GPL-2.0
+
+config CRYPTO_DEV_HISI_SEC
+ tristate "Support for Hisilicon SEC crypto block cipher accelerator"
+ select CRYPTO_BLKCIPHER
+ select CRYPTO_ALGAPI
+ select SG_SPLIT
+ depends on ARM64 || COMPILE_TEST
+ depends on HAS_IOMEM
+ help
+ Support for Hisilicon SEC Engine in Hip06 and Hip07
+
+ To compile this as a module, choose M here: the module
+ will be called hisi_sec.
diff --git a/drivers/crypto/hisilicon/Makefile b/drivers/crypto/hisilicon/Makefile
new file mode 100644
index 000000000000..463f46ace182
--- /dev/null
+++ b/drivers/crypto/hisilicon/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_CRYPTO_DEV_HISI_SEC) += sec/
diff --git a/drivers/crypto/hisilicon/sec/Makefile b/drivers/crypto/hisilicon/sec/Makefile
new file mode 100644
index 000000000000..a55b698e0c27
--- /dev/null
+++ b/drivers/crypto/hisilicon/sec/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_CRYPTO_DEV_HISI_SEC) += hisi_sec.o
+hisi_sec-y = sec_algs.o sec_drv.o
diff --git a/drivers/crypto/hisilicon/sec/sec_algs.c b/drivers/crypto/hisilicon/sec/sec_algs.c
new file mode 100644
index 000000000000..d69d3ce358b0
--- /dev/null
+++ b/drivers/crypto/hisilicon/sec/sec_algs.c
@@ -0,0 +1,1122 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2016-2017 Hisilicon Limited. */
+#include <linux/crypto.h>
+#include <linux/dma-mapping.h>
+#include <linux/dmapool.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+
+#include <crypto/aes.h>
+#include <crypto/algapi.h>
+#include <crypto/des.h>
+#include <crypto/skcipher.h>
+#include <crypto/xts.h>
+#include <crypto/internal/skcipher.h>
+
+#include "sec_drv.h"
+
+#define SEC_MAX_CIPHER_KEY 64
+#define SEC_REQ_LIMIT SZ_32M
+
+struct sec_c_alg_cfg {
+ unsigned c_alg : 3;
+ unsigned c_mode : 3;
+ unsigned key_len : 2;
+ unsigned c_width : 2;
+};
+
+static const struct sec_c_alg_cfg sec_c_alg_cfgs[] = {
+ [SEC_C_DES_ECB_64] = {
+ .c_alg = SEC_C_ALG_DES,
+ .c_mode = SEC_C_MODE_ECB,
+ .key_len = SEC_KEY_LEN_DES,
+ },
+ [SEC_C_DES_CBC_64] = {
+ .c_alg = SEC_C_ALG_DES,
+ .c_mode = SEC_C_MODE_CBC,
+ .key_len = SEC_KEY_LEN_DES,
+ },
+ [SEC_C_3DES_ECB_192_3KEY] = {
+ .c_alg = SEC_C_ALG_3DES,
+ .c_mode = SEC_C_MODE_ECB,
+ .key_len = SEC_KEY_LEN_3DES_3_KEY,
+ },
+ [SEC_C_3DES_ECB_192_2KEY] = {
+ .c_alg = SEC_C_ALG_3DES,
+ .c_mode = SEC_C_MODE_ECB,
+ .key_len = SEC_KEY_LEN_3DES_2_KEY,
+ },
+ [SEC_C_3DES_CBC_192_3KEY] = {
+ .c_alg = SEC_C_ALG_3DES,
+ .c_mode = SEC_C_MODE_CBC,
+ .key_len = SEC_KEY_LEN_3DES_3_KEY,
+ },
+ [SEC_C_3DES_CBC_192_2KEY] = {
+ .c_alg = SEC_C_ALG_3DES,
+ .c_mode = SEC_C_MODE_CBC,
+ .key_len = SEC_KEY_LEN_3DES_2_KEY,
+ },
+ [SEC_C_AES_ECB_128] = {
+ .c_alg = SEC_C_ALG_AES,
+ .c_mode = SEC_C_MODE_ECB,
+ .key_len = SEC_KEY_LEN_AES_128,
+ },
+ [SEC_C_AES_ECB_192] = {
+ .c_alg = SEC_C_ALG_AES,
+ .c_mode = SEC_C_MODE_ECB,
+ .key_len = SEC_KEY_LEN_AES_192,
+ },
+ [SEC_C_AES_ECB_256] = {
+ .c_alg = SEC_C_ALG_AES,
+ .c_mode = SEC_C_MODE_ECB,
+ .key_len = SEC_KEY_LEN_AES_256,
+ },
+ [SEC_C_AES_CBC_128] = {
+ .c_alg = SEC_C_ALG_AES,
+ .c_mode = SEC_C_MODE_CBC,
+ .key_len = SEC_KEY_LEN_AES_128,
+ },
+ [SEC_C_AES_CBC_192] = {
+ .c_alg = SEC_C_ALG_AES,
+ .c_mode = SEC_C_MODE_CBC,
+ .key_len = SEC_KEY_LEN_AES_192,
+ },
+ [SEC_C_AES_CBC_256] = {
+ .c_alg = SEC_C_ALG_AES,
+ .c_mode = SEC_C_MODE_CBC,
+ .key_len = SEC_KEY_LEN_AES_256,
+ },
+ [SEC_C_AES_CTR_128] = {
+ .c_alg = SEC_C_ALG_AES,
+ .c_mode = SEC_C_MODE_CTR,
+ .key_len = SEC_KEY_LEN_AES_128,
+ },
+ [SEC_C_AES_CTR_192] = {
+ .c_alg = SEC_C_ALG_AES,
+ .c_mode = SEC_C_MODE_CTR,
+ .key_len = SEC_KEY_LEN_AES_192,
+ },
+ [SEC_C_AES_CTR_256] = {
+ .c_alg = SEC_C_ALG_AES,
+ .c_mode = SEC_C_MODE_CTR,
+ .key_len = SEC_KEY_LEN_AES_256,
+ },
+ [SEC_C_AES_XTS_128] = {
+ .c_alg = SEC_C_ALG_AES,
+ .c_mode = SEC_C_MODE_XTS,
+ .key_len = SEC_KEY_LEN_AES_128,
+ },
+ [SEC_C_AES_XTS_256] = {
+ .c_alg = SEC_C_ALG_AES,
+ .c_mode = SEC_C_MODE_XTS,
+ .key_len = SEC_KEY_LEN_AES_256,
+ },
+ [SEC_C_NULL] = {
+ },
+};
+
+/*
+ * Mutex used to ensure safe operation of reference count of
+ * alg providers
+ */
+static DEFINE_MUTEX(algs_lock);
+static unsigned int active_devs;
+
+static void sec_alg_skcipher_init_template(struct sec_alg_tfm_ctx *ctx,
+ struct sec_bd_info *req,
+ enum sec_cipher_alg alg)
+{
+ const struct sec_c_alg_cfg *cfg = &sec_c_alg_cfgs[alg];
+
+ memset(req, 0, sizeof(*req));
+ req->w0 |= cfg->c_mode << SEC_BD_W0_C_MODE_S;
+ req->w1 |= cfg->c_alg << SEC_BD_W1_C_ALG_S;
+ req->w3 |= cfg->key_len << SEC_BD_W3_C_KEY_LEN_S;
+ req->w0 |= cfg->c_width << SEC_BD_W0_C_WIDTH_S;
+
+ req->cipher_key_addr_lo = lower_32_bits(ctx->pkey);
+ req->cipher_key_addr_hi = upper_32_bits(ctx->pkey);
+}
+
+static void sec_alg_skcipher_init_context(struct crypto_skcipher *atfm,
+ const u8 *key,
+ unsigned int keylen,
+ enum sec_cipher_alg alg)
+{
+ struct crypto_tfm *tfm = crypto_skcipher_tfm(atfm);
+ struct sec_alg_tfm_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ ctx->cipher_alg = alg;
+ memcpy(ctx->key, key, keylen);
+ sec_alg_skcipher_init_template(ctx, &ctx->req_template,
+ ctx->cipher_alg);
+}
+
+static int sec_alloc_and_fill_hw_sgl(struct sec_hw_sgl **sec_sgl,
+ dma_addr_t *psec_sgl,
+ struct scatterlist *sgl,
+ int count,
+ struct sec_dev_info *info)
+{
+ struct sec_hw_sgl *sgl_current = NULL;
+ struct sec_hw_sgl *sgl_next;
+ dma_addr_t sgl_next_dma;
+ struct scatterlist *sg;
+ int ret, sge_index, i;
+
+ if (!count)
+ return -EINVAL;
+
+ for_each_sg(sgl, sg, count, i) {
+ sge_index = i % SEC_MAX_SGE_NUM;
+ if (sge_index == 0) {
+ sgl_next = dma_pool_zalloc(info->hw_sgl_pool,
+ GFP_KERNEL, &sgl_next_dma);
+ if (!sgl_next) {
+ ret = -ENOMEM;
+ goto err_free_hw_sgls;
+ }
+
+ if (!sgl_current) { /* First one */
+ *psec_sgl = sgl_next_dma;
+ *sec_sgl = sgl_next;
+ } else { /* Chained */
+ sgl_current->entry_sum_in_sgl = SEC_MAX_SGE_NUM;
+ sgl_current->next_sgl = sgl_next_dma;
+ sgl_current->next = sgl_next;
+ }
+ sgl_current = sgl_next;
+ }
+ sgl_current->sge_entries[sge_index].buf = sg_dma_address(sg);
+ sgl_current->sge_entries[sge_index].len = sg_dma_len(sg);
+ sgl_current->data_bytes_in_sgl += sg_dma_len(sg);
+ }
+ sgl_current->entry_sum_in_sgl = count % SEC_MAX_SGE_NUM;
+ sgl_current->next_sgl = 0;
+ (*sec_sgl)->entry_sum_in_chain = count;
+
+ return 0;
+
+err_free_hw_sgls:
+ sgl_current = *sec_sgl;
+ while (sgl_current) {
+ sgl_next = sgl_current->next;
+ dma_pool_free(info->hw_sgl_pool, sgl_current,
+ sgl_current->next_sgl);
+ sgl_current = sgl_next;
+ }
+ *psec_sgl = 0;
+
+ return ret;
+}
+
+static void sec_free_hw_sgl(struct sec_hw_sgl *hw_sgl,
+ dma_addr_t psec_sgl, struct sec_dev_info *info)
+{
+ struct sec_hw_sgl *sgl_current, *sgl_next;
+
+ if (!hw_sgl)
+ return;
+ sgl_current = hw_sgl;
+ while (sgl_current->next) {
+ sgl_next = sgl_current->next;
+ dma_pool_free(info->hw_sgl_pool, sgl_current,
+ sgl_current->next_sgl);
+ sgl_current = sgl_next;
+ }
+ dma_pool_free(info->hw_sgl_pool, hw_sgl, psec_sgl);
+}
+
+static int sec_alg_skcipher_setkey(struct crypto_skcipher *tfm,
+ const u8 *key, unsigned int keylen,
+ enum sec_cipher_alg alg)
+{
+ struct sec_alg_tfm_ctx *ctx = crypto_skcipher_ctx(tfm);
+ struct device *dev = ctx->queue->dev_info->dev;
+
+ mutex_lock(&ctx->lock);
+ if (ctx->key) {
+ /* rekeying */
+ memset(ctx->key, 0, SEC_MAX_CIPHER_KEY);
+ } else {
+ /* new key */
+ ctx->key = dma_zalloc_coherent(dev, SEC_MAX_CIPHER_KEY,
+ &ctx->pkey, GFP_KERNEL);
+ if (!ctx->key) {
+ mutex_unlock(&ctx->lock);
+ return -ENOMEM;
+ }
+ }
+ mutex_unlock(&ctx->lock);
+ sec_alg_skcipher_init_context(tfm, key, keylen, alg);
+
+ return 0;
+}
+
+static int sec_alg_skcipher_setkey_aes_ecb(struct crypto_skcipher *tfm,
+ const u8 *key, unsigned int keylen)
+{
+ enum sec_cipher_alg alg;
+
+ switch (keylen) {
+ case AES_KEYSIZE_128:
+ alg = SEC_C_AES_ECB_128;
+ break;
+ case AES_KEYSIZE_192:
+ alg = SEC_C_AES_ECB_192;
+ break;
+ case AES_KEYSIZE_256:
+ alg = SEC_C_AES_ECB_256;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return sec_alg_skcipher_setkey(tfm, key, keylen, alg);
+}
+
+static int sec_alg_skcipher_setkey_aes_cbc(struct crypto_skcipher *tfm,
+ const u8 *key, unsigned int keylen)
+{
+ enum sec_cipher_alg alg;
+
+ switch (keylen) {
+ case AES_KEYSIZE_128:
+ alg = SEC_C_AES_CBC_128;
+ break;
+ case AES_KEYSIZE_192:
+ alg = SEC_C_AES_CBC_192;
+ break;
+ case AES_KEYSIZE_256:
+ alg = SEC_C_AES_CBC_256;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return sec_alg_skcipher_setkey(tfm, key, keylen, alg);
+}
+
+static int sec_alg_skcipher_setkey_aes_ctr(struct crypto_skcipher *tfm,
+ const u8 *key, unsigned int keylen)
+{
+ enum sec_cipher_alg alg;
+
+ switch (keylen) {
+ case AES_KEYSIZE_128:
+ alg = SEC_C_AES_CTR_128;
+ break;
+ case AES_KEYSIZE_192:
+ alg = SEC_C_AES_CTR_192;
+ break;
+ case AES_KEYSIZE_256:
+ alg = SEC_C_AES_CTR_256;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return sec_alg_skcipher_setkey(tfm, key, keylen, alg);
+}
+
+static int sec_alg_skcipher_setkey_aes_xts(struct crypto_skcipher *tfm,
+ const u8 *key, unsigned int keylen)
+{
+ enum sec_cipher_alg alg;
+ int ret;
+
+ ret = xts_verify_key(tfm, key, keylen);
+ if (ret)
+ return ret;
+
+ switch (keylen) {
+ case AES_KEYSIZE_128 * 2:
+ alg = SEC_C_AES_XTS_128;
+ break;
+ case AES_KEYSIZE_256 * 2:
+ alg = SEC_C_AES_XTS_256;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return sec_alg_skcipher_setkey(tfm, key, keylen, alg);
+}
+
+static int sec_alg_skcipher_setkey_des_ecb(struct crypto_skcipher *tfm,
+ const u8 *key, unsigned int keylen)
+{
+ if (keylen != DES_KEY_SIZE)
+ return -EINVAL;
+
+ return sec_alg_skcipher_setkey(tfm, key, keylen, SEC_C_DES_ECB_64);
+}
+
+static int sec_alg_skcipher_setkey_des_cbc(struct crypto_skcipher *tfm,
+ const u8 *key, unsigned int keylen)
+{
+ if (keylen != DES_KEY_SIZE)
+ return -EINVAL;
+
+ return sec_alg_skcipher_setkey(tfm, key, keylen, SEC_C_DES_CBC_64);
+}
+
+static int sec_alg_skcipher_setkey_3des_ecb(struct crypto_skcipher *tfm,
+ const u8 *key, unsigned int keylen)
+{
+ if (keylen != DES_KEY_SIZE * 3)
+ return -EINVAL;
+
+ return sec_alg_skcipher_setkey(tfm, key, keylen,
+ SEC_C_3DES_ECB_192_3KEY);
+}
+
+static int sec_alg_skcipher_setkey_3des_cbc(struct crypto_skcipher *tfm,
+ const u8 *key, unsigned int keylen)
+{
+ if (keylen != DES3_EDE_KEY_SIZE)
+ return -EINVAL;
+
+ return sec_alg_skcipher_setkey(tfm, key, keylen,
+ SEC_C_3DES_CBC_192_3KEY);
+}
+
+static void sec_alg_free_el(struct sec_request_el *el,
+ struct sec_dev_info *info)
+{
+ sec_free_hw_sgl(el->out, el->dma_out, info);
+ sec_free_hw_sgl(el->in, el->dma_in, info);
+ kfree(el->sgl_in);
+ kfree(el->sgl_out);
+ kfree(el);
+}
+
+/* queuelock must be held */
+int sec_send_request(struct sec_request *sec_req, struct sec_queue *queue)
+{
+ struct sec_request_el *el, *temp;
+ int ret = 0;
+
+ mutex_lock(&sec_req->lock);
+ list_for_each_entry_safe(el, temp, &sec_req->elements, head) {
+ /*
+ * Add to hardware queue only under following circumstances
+ * 1) Software and hardware queue empty so no chain dependencies
+ * 2) No dependencies as new IV - (check software queue empty
+ * to maintain order)
+ * 3) No dependencies because the mode does no chaining.
+ *
+ * In other cases first insert onto the software queue which
+ * is then emptied as requests complete
+ */
+ if (!queue->havesoftqueue ||
+ (kfifo_is_empty(&queue->softqueue) &&
+ sec_queue_empty(queue))) {
+ ret = sec_queue_send(queue, &el->req, sec_req);
+ if (ret == -EAGAIN) {
+ /* Wait unti we can send then try again */
+ /* DEAD if here - should not happen */
+ ret = -EBUSY;
+ goto err_unlock;
+ }
+ } else {
+ kfifo_put(&queue->softqueue, el);
+ }
+ }
+err_unlock:
+ mutex_unlock(&sec_req->lock);
+
+ return ret;
+}
+
+static void sec_skcipher_alg_callback(struct sec_bd_info *sec_resp,
+ struct crypto_async_request *req_base)
+{
+ struct skcipher_request *skreq = container_of(req_base,
+ struct skcipher_request,
+ base);
+ struct sec_request *sec_req = skcipher_request_ctx(skreq);
+ struct sec_request *backlog_req;
+ struct sec_request_el *sec_req_el, *nextrequest;
+ struct sec_alg_tfm_ctx *ctx = sec_req->tfm_ctx;
+ struct crypto_skcipher *atfm = crypto_skcipher_reqtfm(skreq);
+ struct device *dev = ctx->queue->dev_info->dev;
+ int icv_or_skey_en, ret;
+ bool done;
+
+ sec_req_el = list_first_entry(&sec_req->elements, struct sec_request_el,
+ head);
+ icv_or_skey_en = (sec_resp->w0 & SEC_BD_W0_ICV_OR_SKEY_EN_M) >>
+ SEC_BD_W0_ICV_OR_SKEY_EN_S;
+ if (sec_resp->w1 & SEC_BD_W1_BD_INVALID || icv_or_skey_en == 3) {
+ dev_err(dev, "Got an invalid answer %lu %d\n",
+ sec_resp->w1 & SEC_BD_W1_BD_INVALID,
+ icv_or_skey_en);
+ sec_req->err = -EINVAL;
+ /*
+ * We need to muddle on to avoid getting stuck with elements
+ * on the queue. Error will be reported so requester so
+ * it should be able to handle appropriately.
+ */
+ }
+
+ mutex_lock(&ctx->queue->queuelock);
+ /* Put the IV in place for chained cases */
+ switch (ctx->cipher_alg) {
+ case SEC_C_AES_CBC_128:
+ case SEC_C_AES_CBC_192:
+ case SEC_C_AES_CBC_256:
+ if (sec_req_el->req.w0 & SEC_BD_W0_DE)
+ sg_pcopy_to_buffer(sec_req_el->sgl_out,
+ sg_nents(sec_req_el->sgl_out),
+ skreq->iv,
+ crypto_skcipher_ivsize(atfm),
+ sec_req_el->el_length -
+ crypto_skcipher_ivsize(atfm));
+ else
+ sg_pcopy_to_buffer(sec_req_el->sgl_in,
+ sg_nents(sec_req_el->sgl_in),
+ skreq->iv,
+ crypto_skcipher_ivsize(atfm),
+ sec_req_el->el_length -
+ crypto_skcipher_ivsize(atfm));
+ /* No need to sync to the device as coherent DMA */
+ break;
+ case SEC_C_AES_CTR_128:
+ case SEC_C_AES_CTR_192:
+ case SEC_C_AES_CTR_256:
+ crypto_inc(skreq->iv, 16);
+ break;
+ default:
+ /* Do not update */
+ break;
+ }
+
+ if (ctx->queue->havesoftqueue &&
+ !kfifo_is_empty(&ctx->queue->softqueue) &&
+ sec_queue_empty(ctx->queue)) {
+ ret = kfifo_get(&ctx->queue->softqueue, &nextrequest);
+ if (ret <= 0)
+ dev_err(dev,
+ "Error getting next element from kfifo %d\n",
+ ret);
+ else
+ /* We know there is space so this cannot fail */
+ sec_queue_send(ctx->queue, &nextrequest->req,
+ nextrequest->sec_req);
+ } else if (!list_empty(&ctx->backlog)) {
+ /* Need to verify there is room first */
+ backlog_req = list_first_entry(&ctx->backlog,
+ typeof(*backlog_req),
+ backlog_head);
+ if (sec_queue_can_enqueue(ctx->queue,
+ backlog_req->num_elements) ||
+ (ctx->queue->havesoftqueue &&
+ kfifo_avail(&ctx->queue->softqueue) >
+ backlog_req->num_elements)) {
+ sec_send_request(backlog_req, ctx->queue);
+ backlog_req->req_base->complete(backlog_req->req_base,
+ -EINPROGRESS);
+ list_del(&backlog_req->backlog_head);
+ }
+ }
+ mutex_unlock(&ctx->queue->queuelock);
+
+ mutex_lock(&sec_req->lock);
+ list_del(&sec_req_el->head);
+ mutex_unlock(&sec_req->lock);
+ sec_alg_free_el(sec_req_el, ctx->queue->dev_info);
+
+ /*
+ * Request is done.
+ * The dance is needed as the lock is freed in the completion
+ */
+ mutex_lock(&sec_req->lock);
+ done = list_empty(&sec_req->elements);
+ mutex_unlock(&sec_req->lock);
+ if (done) {
+ if (crypto_skcipher_ivsize(atfm)) {
+ dma_unmap_single(dev, sec_req->dma_iv,
+ crypto_skcipher_ivsize(atfm),
+ DMA_TO_DEVICE);
+ }
+ dma_unmap_sg(dev, skreq->src, sec_req->len_in,
+ DMA_BIDIRECTIONAL);
+ if (skreq->src != skreq->dst)
+ dma_unmap_sg(dev, skreq->dst, sec_req->len_out,
+ DMA_BIDIRECTIONAL);
+ skreq->base.complete(&skreq->base, sec_req->err);
+ }
+}
+
+void sec_alg_callback(struct sec_bd_info *resp, void *shadow)
+{
+ struct sec_request *sec_req = shadow;
+
+ sec_req->cb(resp, sec_req->req_base);
+}
+
+static int sec_alg_alloc_and_calc_split_sizes(int length, size_t **split_sizes,
+ int *steps)
+{
+ size_t *sizes;
+ int i;
+
+ /* Split into suitable sized blocks */
+ *steps = roundup(length, SEC_REQ_LIMIT) / SEC_REQ_LIMIT;
+ sizes = kcalloc(*steps, sizeof(*sizes), GFP_KERNEL);
+ if (!sizes)
+ return -ENOMEM;
+
+ for (i = 0; i < *steps - 1; i++)
+ sizes[i] = SEC_REQ_LIMIT;
+ sizes[*steps - 1] = length - SEC_REQ_LIMIT * (*steps - 1);
+ *split_sizes = sizes;
+
+ return 0;
+}
+
+static int sec_map_and_split_sg(struct scatterlist *sgl, size_t *split_sizes,
+ int steps, struct scatterlist ***splits,
+ int **splits_nents,
+ int sgl_len_in,
+ struct device *dev)
+{
+ int ret, count;
+
+ count = dma_map_sg(dev, sgl, sgl_len_in, DMA_BIDIRECTIONAL);
+ if (!count)
+ return -EINVAL;
+
+ *splits = kcalloc(steps, sizeof(struct scatterlist *), GFP_KERNEL);
+ if (!*splits) {
+ ret = -ENOMEM;
+ goto err_unmap_sg;
+ }
+ *splits_nents = kcalloc(steps, sizeof(int), GFP_KERNEL);
+ if (!*splits_nents) {
+ ret = -ENOMEM;
+ goto err_free_splits;
+ }
+
+ /* output the scatter list before and after this */
+ ret = sg_split(sgl, count, 0, steps, split_sizes,
+ *splits, *splits_nents, GFP_KERNEL);
+ if (ret) {
+ ret = -ENOMEM;
+ goto err_free_splits_nents;
+ }
+
+ return 0;
+
+err_free_splits_nents:
+ kfree(*splits_nents);
+err_free_splits:
+ kfree(*splits);
+err_unmap_sg:
+ dma_unmap_sg(dev, sgl, sgl_len_in, DMA_BIDIRECTIONAL);
+
+ return ret;
+}
+
+/*
+ * Reverses the sec_map_and_split_sg call for messages not yet added to
+ * the queues.
+ */
+static void sec_unmap_sg_on_err(struct scatterlist *sgl, int steps,
+ struct scatterlist **splits, int *splits_nents,
+ int sgl_len_in, struct device *dev)
+{
+ int i;
+
+ for (i = 0; i < steps; i++)
+ kfree(splits[i]);
+ kfree(splits_nents);
+ kfree(splits);
+
+ dma_unmap_sg(dev, sgl, sgl_len_in, DMA_BIDIRECTIONAL);
+}
+
+static struct sec_request_el
+*sec_alg_alloc_and_fill_el(struct sec_bd_info *template, int encrypt,
+ int el_size, bool different_dest,
+ struct scatterlist *sgl_in, int n_ents_in,
+ struct scatterlist *sgl_out, int n_ents_out,
+ struct sec_dev_info *info)
+{
+ struct sec_request_el *el;
+ struct sec_bd_info *req;
+ int ret;
+
+ el = kzalloc(sizeof(*el), GFP_KERNEL);
+ if (!el)
+ return ERR_PTR(-ENOMEM);
+ el->el_length = el_size;
+ req = &el->req;
+ memcpy(req, template, sizeof(*req));
+
+ req->w0 &= ~SEC_BD_W0_CIPHER_M;
+ if (encrypt)
+ req->w0 |= SEC_CIPHER_ENCRYPT << SEC_BD_W0_CIPHER_S;
+ else
+ req->w0 |= SEC_CIPHER_DECRYPT << SEC_BD_W0_CIPHER_S;
+
+ req->w0 &= ~SEC_BD_W0_C_GRAN_SIZE_19_16_M;
+ req->w0 |= ((el_size >> 16) << SEC_BD_W0_C_GRAN_SIZE_19_16_S) &
+ SEC_BD_W0_C_GRAN_SIZE_19_16_M;
+
+ req->w0 &= ~SEC_BD_W0_C_GRAN_SIZE_21_20_M;
+ req->w0 |= ((el_size >> 20) << SEC_BD_W0_C_GRAN_SIZE_21_20_S) &
+ SEC_BD_W0_C_GRAN_SIZE_21_20_M;
+
+ /* Writing whole u32 so no need to take care of masking */
+ req->w2 = ((1 << SEC_BD_W2_GRAN_NUM_S) & SEC_BD_W2_GRAN_NUM_M) |
+ ((el_size << SEC_BD_W2_C_GRAN_SIZE_15_0_S) &
+ SEC_BD_W2_C_GRAN_SIZE_15_0_M);
+
+ req->w3 &= ~SEC_BD_W3_CIPHER_LEN_OFFSET_M;
+ req->w1 |= SEC_BD_W1_ADDR_TYPE;
+
+ el->sgl_in = sgl_in;
+
+ ret = sec_alloc_and_fill_hw_sgl(&el->in, &el->dma_in, el->sgl_in,
+ n_ents_in, info);
+ if (ret)
+ goto err_free_el;
+
+ req->data_addr_lo = lower_32_bits(el->dma_in);
+ req->data_addr_hi = upper_32_bits(el->dma_in);
+
+ if (different_dest) {
+ el->sgl_out = sgl_out;
+ ret = sec_alloc_and_fill_hw_sgl(&el->out, &el->dma_out,
+ el->sgl_out,
+ n_ents_out, info);
+ if (ret)
+ goto err_free_hw_sgl_in;
+
+ req->w0 |= SEC_BD_W0_DE;
+ req->cipher_destin_addr_lo = lower_32_bits(el->dma_out);
+ req->cipher_destin_addr_hi = upper_32_bits(el->dma_out);
+
+ } else {
+ req->w0 &= ~SEC_BD_W0_DE;
+ req->cipher_destin_addr_lo = lower_32_bits(el->dma_in);
+ req->cipher_destin_addr_hi = upper_32_bits(el->dma_in);
+ }
+
+ return el;
+
+err_free_hw_sgl_in:
+ sec_free_hw_sgl(el->in, el->dma_in, info);
+err_free_el:
+ kfree(el);
+
+ return ERR_PTR(ret);
+}
+
+static int sec_alg_skcipher_crypto(struct skcipher_request *skreq,
+ bool encrypt)
+{
+ struct crypto_skcipher *atfm = crypto_skcipher_reqtfm(skreq);
+ struct crypto_tfm *tfm = crypto_skcipher_tfm(atfm);
+ struct sec_alg_tfm_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct sec_queue *queue = ctx->queue;
+ struct sec_request *sec_req = skcipher_request_ctx(skreq);
+ struct sec_dev_info *info = queue->dev_info;
+ int i, ret, steps;
+ size_t *split_sizes;
+ struct scatterlist **splits_in;
+ struct scatterlist **splits_out = NULL;
+ int *splits_in_nents;
+ int *splits_out_nents = NULL;
+ struct sec_request_el *el, *temp;
+
+ mutex_init(&sec_req->lock);
+ sec_req->req_base = &skreq->base;
+ sec_req->err = 0;
+ /* SGL mapping out here to allow us to break it up as necessary */
+ sec_req->len_in = sg_nents(skreq->src);
+
+ ret = sec_alg_alloc_and_calc_split_sizes(skreq->cryptlen, &split_sizes,
+ &steps);
+ if (ret)
+ return ret;
+ sec_req->num_elements = steps;
+ ret = sec_map_and_split_sg(skreq->src, split_sizes, steps, &splits_in,
+ &splits_in_nents, sec_req->len_in,
+ info->dev);
+ if (ret)
+ goto err_free_split_sizes;
+
+ if (skreq->src != skreq->dst) {
+ sec_req->len_out = sg_nents(skreq->dst);
+ ret = sec_map_and_split_sg(skreq->dst, split_sizes, steps,
+ &splits_out, &splits_out_nents,
+ sec_req->len_out, info->dev);
+ if (ret)
+ goto err_unmap_in_sg;
+ }
+ /* Shared info stored in seq_req - applies to all BDs */
+ sec_req->tfm_ctx = ctx;
+ sec_req->cb = sec_skcipher_alg_callback;
+ INIT_LIST_HEAD(&sec_req->elements);
+
+ /*
+ * Future optimization.
+ * In the chaining case we can't use a dma pool bounce buffer
+ * but in the case where we know there is no chaining we can
+ */
+ if (crypto_skcipher_ivsize(atfm)) {
+ sec_req->dma_iv = dma_map_single(info->dev, skreq->iv,
+ crypto_skcipher_ivsize(atfm),
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(info->dev, sec_req->dma_iv)) {
+ ret = -ENOMEM;
+ goto err_unmap_out_sg;
+ }
+ }
+
+ /* Set them all up then queue - cleaner error handling. */
+ for (i = 0; i < steps; i++) {
+ el = sec_alg_alloc_and_fill_el(&ctx->req_template,
+ encrypt ? 1 : 0,
+ split_sizes[i],
+ skreq->src != skreq->dst,
+ splits_in[i], splits_in_nents[i],
+ splits_out[i],
+ splits_out_nents[i], info);
+ if (IS_ERR(el)) {
+ ret = PTR_ERR(el);
+ goto err_free_elements;
+ }
+ el->req.cipher_iv_addr_lo = lower_32_bits(sec_req->dma_iv);
+ el->req.cipher_iv_addr_hi = upper_32_bits(sec_req->dma_iv);
+ el->sec_req = sec_req;
+ list_add_tail(&el->head, &sec_req->elements);
+ }
+
+ /*
+ * Only attempt to queue if the whole lot can fit in the queue -
+ * we can't successfully cleanup after a partial queing so this
+ * must succeed or fail atomically.
+ *
+ * Big hammer test of both software and hardware queues - could be
+ * more refined but this is unlikely to happen so no need.
+ */
+
+ /* Cleanup - all elements in pointer arrays have been coppied */
+ kfree(splits_in_nents);
+ kfree(splits_in);
+ kfree(splits_out_nents);
+ kfree(splits_out);
+ kfree(split_sizes);
+
+ /* Grab a big lock for a long time to avoid concurrency issues */
+ mutex_lock(&queue->queuelock);
+
+ /*
+ * Can go on to queue if we have space in either:
+ * 1) The hardware queue and no software queue
+ * 2) The software queue
+ * AND there is nothing in the backlog. If there is backlog we
+ * have to only queue to the backlog queue and return busy.
+ */
+ if ((!sec_queue_can_enqueue(queue, steps) &&
+ (!queue->havesoftqueue ||
+ kfifo_avail(&queue->softqueue) > steps)) ||
+ !list_empty(&ctx->backlog)) {
+ if ((skreq->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {
+ list_add_tail(&sec_req->backlog_head, &ctx->backlog);
+ mutex_unlock(&queue->queuelock);
+ return -EBUSY;
+ }
+
+ ret = -EBUSY;
+ mutex_unlock(&queue->queuelock);
+ goto err_free_elements;
+ }
+ ret = sec_send_request(sec_req, queue);
+ mutex_unlock(&queue->queuelock);
+ if (ret)
+ goto err_free_elements;
+
+ return -EINPROGRESS;
+
+err_free_elements:
+ list_for_each_entry_safe(el, temp, &sec_req->elements, head) {
+ list_del(&el->head);
+ sec_alg_free_el(el, info);
+ }
+ if (crypto_skcipher_ivsize(atfm))
+ dma_unmap_single(info->dev, sec_req->dma_iv,
+ crypto_skcipher_ivsize(atfm),
+ DMA_BIDIRECTIONAL);
+err_unmap_out_sg:
+ if (skreq->src != skreq->dst)
+ sec_unmap_sg_on_err(skreq->dst, steps, splits_out,
+ splits_out_nents, sec_req->len_out,
+ info->dev);
+err_unmap_in_sg:
+ sec_unmap_sg_on_err(skreq->src, steps, splits_in, splits_in_nents,
+ sec_req->len_in, info->dev);
+err_free_split_sizes:
+ kfree(split_sizes);
+
+ return ret;
+}
+
+static int sec_alg_skcipher_encrypt(struct skcipher_request *req)
+{
+ return sec_alg_skcipher_crypto(req, true);
+}
+
+static int sec_alg_skcipher_decrypt(struct skcipher_request *req)
+{
+ return sec_alg_skcipher_crypto(req, false);
+}
+
+static int sec_alg_skcipher_init(struct crypto_skcipher *tfm)
+{
+ struct sec_alg_tfm_ctx *ctx = crypto_skcipher_ctx(tfm);
+
+ mutex_init(&ctx->lock);
+ INIT_LIST_HEAD(&ctx->backlog);
+ crypto_skcipher_set_reqsize(tfm, sizeof(struct sec_request));
+
+ ctx->queue = sec_queue_alloc_start_safe();
+ if (IS_ERR(ctx->queue))
+ return PTR_ERR(ctx->queue);
+
+ mutex_init(&ctx->queue->queuelock);
+ ctx->queue->havesoftqueue = false;
+
+ return 0;
+}
+
+static void sec_alg_skcipher_exit(struct crypto_skcipher *tfm)
+{
+ struct sec_alg_tfm_ctx *ctx = crypto_skcipher_ctx(tfm);
+ struct device *dev = ctx->queue->dev_info->dev;
+
+ if (ctx->key) {
+ memzero_explicit(ctx->key, SEC_MAX_CIPHER_KEY);
+ dma_free_coherent(dev, SEC_MAX_CIPHER_KEY, ctx->key,
+ ctx->pkey);
+ }
+ sec_queue_stop_release(ctx->queue);
+}
+
+static int sec_alg_skcipher_init_with_queue(struct crypto_skcipher *tfm)
+{
+ struct sec_alg_tfm_ctx *ctx = crypto_skcipher_ctx(tfm);
+ int ret;
+
+ ret = sec_alg_skcipher_init(tfm);
+ if (ret)
+ return ret;
+
+ INIT_KFIFO(ctx->queue->softqueue);
+ ret = kfifo_alloc(&ctx->queue->softqueue, 512, GFP_KERNEL);
+ if (ret) {
+ sec_alg_skcipher_exit(tfm);
+ return ret;
+ }
+ ctx->queue->havesoftqueue = true;
+
+ return 0;
+}
+
+static void sec_alg_skcipher_exit_with_queue(struct crypto_skcipher *tfm)
+{
+ struct sec_alg_tfm_ctx *ctx = crypto_skcipher_ctx(tfm);
+
+ kfifo_free(&ctx->queue->softqueue);
+ sec_alg_skcipher_exit(tfm);
+}
+
+static struct skcipher_alg sec_algs[] = {
+ {
+ .base = {
+ .cra_name = "ecb(aes)",
+ .cra_driver_name = "hisi_sec_aes_ecb",
+ .cra_priority = 4001,
+ .cra_flags = CRYPTO_ALG_ASYNC,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sec_alg_tfm_ctx),
+ .cra_alignmask = 0,
+ .cra_module = THIS_MODULE,
+ },
+ .init = sec_alg_skcipher_init,
+ .exit = sec_alg_skcipher_exit,
+ .setkey = sec_alg_skcipher_setkey_aes_ecb,
+ .decrypt = sec_alg_skcipher_decrypt,
+ .encrypt = sec_alg_skcipher_encrypt,
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = 0,
+ }, {
+ .base = {
+ .cra_name = "cbc(aes)",
+ .cra_driver_name = "hisi_sec_aes_cbc",
+ .cra_priority = 4001,
+ .cra_flags = CRYPTO_ALG_ASYNC,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sec_alg_tfm_ctx),
+ .cra_alignmask = 0,
+ .cra_module = THIS_MODULE,
+ },
+ .init = sec_alg_skcipher_init_with_queue,
+ .exit = sec_alg_skcipher_exit_with_queue,
+ .setkey = sec_alg_skcipher_setkey_aes_cbc,
+ .decrypt = sec_alg_skcipher_decrypt,
+ .encrypt = sec_alg_skcipher_encrypt,
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ }, {
+ .base = {
+ .cra_name = "ctr(aes)",
+ .cra_driver_name = "hisi_sec_aes_ctr",
+ .cra_priority = 4001,
+ .cra_flags = CRYPTO_ALG_ASYNC,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sec_alg_tfm_ctx),
+ .cra_alignmask = 0,
+ .cra_module = THIS_MODULE,
+ },
+ .init = sec_alg_skcipher_init_with_queue,
+ .exit = sec_alg_skcipher_exit_with_queue,
+ .setkey = sec_alg_skcipher_setkey_aes_ctr,
+ .decrypt = sec_alg_skcipher_decrypt,
+ .encrypt = sec_alg_skcipher_encrypt,
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ }, {
+ .base = {
+ .cra_name = "xts(aes)",
+ .cra_driver_name = "hisi_sec_aes_xts",
+ .cra_priority = 4001,
+ .cra_flags = CRYPTO_ALG_ASYNC,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sec_alg_tfm_ctx),
+ .cra_alignmask = 0,
+ .cra_module = THIS_MODULE,
+ },
+ .init = sec_alg_skcipher_init,
+ .exit = sec_alg_skcipher_exit,
+ .setkey = sec_alg_skcipher_setkey_aes_xts,
+ .decrypt = sec_alg_skcipher_decrypt,
+ .encrypt = sec_alg_skcipher_encrypt,
+ .min_keysize = 2 * AES_MIN_KEY_SIZE,
+ .max_keysize = 2 * AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ }, {
+ /* Unable to find any test vectors so untested */
+ .base = {
+ .cra_name = "ecb(des)",
+ .cra_driver_name = "hisi_sec_des_ecb",
+ .cra_priority = 4001,
+ .cra_flags = CRYPTO_ALG_ASYNC,
+ .cra_blocksize = DES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sec_alg_tfm_ctx),
+ .cra_alignmask = 0,
+ .cra_module = THIS_MODULE,
+ },
+ .init = sec_alg_skcipher_init,
+ .exit = sec_alg_skcipher_exit,
+ .setkey = sec_alg_skcipher_setkey_des_ecb,
+ .decrypt = sec_alg_skcipher_decrypt,
+ .encrypt = sec_alg_skcipher_encrypt,
+ .min_keysize = DES_KEY_SIZE,
+ .max_keysize = DES_KEY_SIZE,
+ .ivsize = 0,
+ }, {
+ .base = {
+ .cra_name = "cbc(des)",
+ .cra_driver_name = "hisi_sec_des_cbc",
+ .cra_priority = 4001,
+ .cra_flags = CRYPTO_ALG_ASYNC,
+ .cra_blocksize = DES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sec_alg_tfm_ctx),
+ .cra_alignmask = 0,
+ .cra_module = THIS_MODULE,
+ },
+ .init = sec_alg_skcipher_init_with_queue,
+ .exit = sec_alg_skcipher_exit_with_queue,
+ .setkey = sec_alg_skcipher_setkey_des_cbc,
+ .decrypt = sec_alg_skcipher_decrypt,
+ .encrypt = sec_alg_skcipher_encrypt,
+ .min_keysize = DES_KEY_SIZE,
+ .max_keysize = DES_KEY_SIZE,
+ .ivsize = DES_BLOCK_SIZE,
+ }, {
+ .base = {
+ .cra_name = "cbc(des3_ede)",
+ .cra_driver_name = "hisi_sec_3des_cbc",
+ .cra_priority = 4001,
+ .cra_flags = CRYPTO_ALG_ASYNC,
+ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sec_alg_tfm_ctx),
+ .cra_alignmask = 0,
+ .cra_module = THIS_MODULE,
+ },
+ .init = sec_alg_skcipher_init_with_queue,
+ .exit = sec_alg_skcipher_exit_with_queue,
+ .setkey = sec_alg_skcipher_setkey_3des_cbc,
+ .decrypt = sec_alg_skcipher_decrypt,
+ .encrypt = sec_alg_skcipher_encrypt,
+ .min_keysize = DES3_EDE_KEY_SIZE,
+ .max_keysize = DES3_EDE_KEY_SIZE,
+ .ivsize = DES3_EDE_BLOCK_SIZE,
+ }, {
+ .base = {
+ .cra_name = "ecb(des3_ede)",
+ .cra_driver_name = "hisi_sec_3des_ecb",
+ .cra_priority = 4001,
+ .cra_flags = CRYPTO_ALG_ASYNC,
+ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sec_alg_tfm_ctx),
+ .cra_alignmask = 0,
+ .cra_module = THIS_MODULE,
+ },
+ .init = sec_alg_skcipher_init,
+ .exit = sec_alg_skcipher_exit,
+ .setkey = sec_alg_skcipher_setkey_3des_ecb,
+ .decrypt = sec_alg_skcipher_decrypt,
+ .encrypt = sec_alg_skcipher_encrypt,
+ .min_keysize = DES3_EDE_KEY_SIZE,
+ .max_keysize = DES3_EDE_KEY_SIZE,
+ .ivsize = 0,
+ }
+};
+
+int sec_algs_register(void)
+{
+ int ret = 0;
+
+ mutex_lock(&algs_lock);
+ if (++active_devs != 1)
+ goto unlock;
+
+ ret = crypto_register_skciphers(sec_algs, ARRAY_SIZE(sec_algs));
+ if (ret)
+ --active_devs;
+unlock:
+ mutex_unlock(&algs_lock);
+
+ return ret;
+}
+
+void sec_algs_unregister(void)
+{
+ mutex_lock(&algs_lock);
+ if (--active_devs != 0)
+ goto unlock;
+ crypto_unregister_skciphers(sec_algs, ARRAY_SIZE(sec_algs));
+
+unlock:
+ mutex_unlock(&algs_lock);
+}
diff --git a/drivers/crypto/hisilicon/sec/sec_drv.c b/drivers/crypto/hisilicon/sec/sec_drv.c
new file mode 100644
index 000000000000..c1ee4e7bf996
--- /dev/null
+++ b/drivers/crypto/hisilicon/sec/sec_drv.c
@@ -0,0 +1,1323 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for the Hisilicon SEC units found on Hip06 Hip07
+ *
+ * Copyright (c) 2016-2017 Hisilicon Limited.
+ */
+#include <linux/acpi.h>
+#include <linux/atomic.h>
+#include <linux/delay.h>
+#include <linux/dma-direction.h>
+#include <linux/dma-mapping.h>
+#include <linux/dmapool.h>
+#include <linux/io.h>
+#include <linux/iommu.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/irqreturn.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include "sec_drv.h"
+
+#define SEC_QUEUE_AR_FROCE_ALLOC 0
+#define SEC_QUEUE_AR_FROCE_NOALLOC 1
+#define SEC_QUEUE_AR_FROCE_DIS 2
+
+#define SEC_QUEUE_AW_FROCE_ALLOC 0
+#define SEC_QUEUE_AW_FROCE_NOALLOC 1
+#define SEC_QUEUE_AW_FROCE_DIS 2
+
+/* SEC_ALGSUB registers */
+#define SEC_ALGSUB_CLK_EN_REG 0x03b8
+#define SEC_ALGSUB_CLK_DIS_REG 0x03bc
+#define SEC_ALGSUB_CLK_ST_REG 0x535c
+#define SEC_ALGSUB_RST_REQ_REG 0x0aa8
+#define SEC_ALGSUB_RST_DREQ_REG 0x0aac
+#define SEC_ALGSUB_RST_ST_REG 0x5a54
+#define SEC_ALGSUB_RST_ST_IS_RST BIT(0)
+
+#define SEC_ALGSUB_BUILD_RST_REQ_REG 0x0ab8
+#define SEC_ALGSUB_BUILD_RST_DREQ_REG 0x0abc
+#define SEC_ALGSUB_BUILD_RST_ST_REG 0x5a5c
+#define SEC_ALGSUB_BUILD_RST_ST_IS_RST BIT(0)
+
+#define SEC_SAA_BASE 0x00001000UL
+
+/* SEC_SAA registers */
+#define SEC_SAA_CTRL_REG(x) ((x) * SEC_SAA_ADDR_SIZE)
+#define SEC_SAA_CTRL_GET_QM_EN BIT(0)
+
+#define SEC_ST_INTMSK1_REG 0x0200
+#define SEC_ST_RINT1_REG 0x0400
+#define SEC_ST_INTSTS1_REG 0x0600
+#define SEC_BD_MNG_STAT_REG 0x0800
+#define SEC_PARSING_STAT_REG 0x0804
+#define SEC_LOAD_TIME_OUT_CNT_REG 0x0808
+#define SEC_CORE_WORK_TIME_OUT_CNT_REG 0x080c
+#define SEC_BACK_TIME_OUT_CNT_REG 0x0810
+#define SEC_BD1_PARSING_RD_TIME_OUT_CNT_REG 0x0814
+#define SEC_BD1_PARSING_WR_TIME_OUT_CNT_REG 0x0818
+#define SEC_BD2_PARSING_RD_TIME_OUT_CNT_REG 0x081c
+#define SEC_BD2_PARSING_WR_TIME_OUT_CNT_REG 0x0820
+#define SEC_SAA_ACC_REG 0x083c
+#define SEC_BD_NUM_CNT_IN_SEC_REG 0x0858
+#define SEC_LOAD_WORK_TIME_CNT_REG 0x0860
+#define SEC_CORE_WORK_WORK_TIME_CNT_REG 0x0864
+#define SEC_BACK_WORK_TIME_CNT_REG 0x0868
+#define SEC_SAA_IDLE_TIME_CNT_REG 0x086c
+#define SEC_SAA_CLK_CNT_REG 0x0870
+
+/* SEC_COMMON registers */
+#define SEC_CLK_EN_REG 0x0000
+#define SEC_CTRL_REG 0x0004
+
+#define SEC_COMMON_CNT_CLR_CE_REG 0x0008
+#define SEC_COMMON_CNT_CLR_CE_CLEAR BIT(0)
+#define SEC_COMMON_CNT_CLR_CE_SNAP_EN BIT(1)
+
+#define SEC_SECURE_CTRL_REG 0x000c
+#define SEC_AXI_CACHE_CFG_REG 0x0010
+#define SEC_AXI_QOS_CFG_REG 0x0014
+#define SEC_IPV4_MASK_TABLE_REG 0x0020
+#define SEC_IPV6_MASK_TABLE_X_REG(x) (0x0024 + (x) * 4)
+#define SEC_FSM_MAX_CNT_REG 0x0064
+
+#define SEC_CTRL2_REG 0x0068
+#define SEC_CTRL2_DATA_AXI_RD_OTSD_CFG_M GENMASK(3, 0)
+#define SEC_CTRL2_DATA_AXI_RD_OTSD_CFG_S 0
+#define SEC_CTRL2_DATA_AXI_WR_OTSD_CFG_M GENMASK(6, 4)
+#define SEC_CTRL2_DATA_AXI_WR_OTSD_CFG_S 4
+#define SEC_CTRL2_CLK_GATE_EN BIT(7)
+#define SEC_CTRL2_ENDIAN_BD BIT(8)
+#define SEC_CTRL2_ENDIAN_BD_TYPE BIT(9)
+
+#define SEC_CNT_PRECISION_CFG_REG 0x006c
+#define SEC_DEBUG_BD_CFG_REG 0x0070
+#define SEC_DEBUG_BD_CFG_WB_NORMAL BIT(0)
+#define SEC_DEBUG_BD_CFG_WB_EN BIT(1)
+
+#define SEC_Q_SIGHT_SEL 0x0074
+#define SEC_Q_SIGHT_HIS_CLR 0x0078
+#define SEC_Q_VMID_CFG_REG(q) (0x0100 + (q) * 4)
+#define SEC_Q_WEIGHT_CFG_REG(q) (0x200 + (q) * 4)
+#define SEC_STAT_CLR_REG 0x0a00
+#define SEC_SAA_IDLE_CNT_CLR_REG 0x0a04
+#define SEC_QM_CPL_Q_IDBUF_DFX_CFG_REG 0x0b00
+#define SEC_QM_CPL_Q_IDBUF_DFX_RESULT_REG 0x0b04
+#define SEC_QM_BD_DFX_CFG_REG 0x0b08
+#define SEC_QM_BD_DFX_RESULT_REG 0x0b0c
+#define SEC_QM_BDID_DFX_RESULT_REG 0x0b10
+#define SEC_QM_BD_DFIFO_STATUS_REG 0x0b14
+#define SEC_QM_BD_DFX_CFG2_REG 0x0b1c
+#define SEC_QM_BD_DFX_RESULT2_REG 0x0b20
+#define SEC_QM_BD_IDFIFO_STATUS_REG 0x0b18
+#define SEC_QM_BD_DFIFO_STATUS2_REG 0x0b28
+#define SEC_QM_BD_IDFIFO_STATUS2_REG 0x0b2c
+
+#define SEC_HASH_IPV4_MASK 0xfff00000
+#define SEC_MAX_SAA_NUM 0xa
+#define SEC_SAA_ADDR_SIZE 0x1000
+
+#define SEC_Q_INIT_REG 0x0
+#define SEC_Q_INIT_WO_STAT_CLEAR 0x2
+#define SEC_Q_INIT_AND_STAT_CLEAR 0x3
+
+#define SEC_Q_CFG_REG 0x8
+#define SEC_Q_CFG_REORDER BIT(0)
+
+#define SEC_Q_PROC_NUM_CFG_REG 0x10
+#define SEC_QUEUE_ENB_REG 0x18
+
+#define SEC_Q_DEPTH_CFG_REG 0x50
+#define SEC_Q_DEPTH_CFG_DEPTH_M GENMASK(11, 0)
+#define SEC_Q_DEPTH_CFG_DEPTH_S 0
+
+#define SEC_Q_BASE_HADDR_REG 0x54
+#define SEC_Q_BASE_LADDR_REG 0x58
+#define SEC_Q_WR_PTR_REG 0x5c
+#define SEC_Q_OUTORDER_BASE_HADDR_REG 0x60
+#define SEC_Q_OUTORDER_BASE_LADDR_REG 0x64
+#define SEC_Q_OUTORDER_RD_PTR_REG 0x68
+#define SEC_Q_OT_TH_REG 0x6c
+
+#define SEC_Q_ARUSER_CFG_REG 0x70
+#define SEC_Q_ARUSER_CFG_FA BIT(0)
+#define SEC_Q_ARUSER_CFG_FNA BIT(1)
+#define SEC_Q_ARUSER_CFG_RINVLD BIT(2)
+#define SEC_Q_ARUSER_CFG_PKG BIT(3)
+
+#define SEC_Q_AWUSER_CFG_REG 0x74
+#define SEC_Q_AWUSER_CFG_FA BIT(0)
+#define SEC_Q_AWUSER_CFG_FNA BIT(1)
+#define SEC_Q_AWUSER_CFG_PKG BIT(2)
+
+#define SEC_Q_ERR_BASE_HADDR_REG 0x7c
+#define SEC_Q_ERR_BASE_LADDR_REG 0x80
+#define SEC_Q_CFG_VF_NUM_REG 0x84
+#define SEC_Q_SOFT_PROC_PTR_REG 0x88
+#define SEC_Q_FAIL_INT_MSK_REG 0x300
+#define SEC_Q_FLOW_INT_MKS_REG 0x304
+#define SEC_Q_FAIL_RINT_REG 0x400
+#define SEC_Q_FLOW_RINT_REG 0x404
+#define SEC_Q_FAIL_INT_STATUS_REG 0x500
+#define SEC_Q_FLOW_INT_STATUS_REG 0x504
+#define SEC_Q_STATUS_REG 0x600
+#define SEC_Q_RD_PTR_REG 0x604
+#define SEC_Q_PRO_PTR_REG 0x608
+#define SEC_Q_OUTORDER_WR_PTR_REG 0x60c
+#define SEC_Q_OT_CNT_STATUS_REG 0x610
+#define SEC_Q_INORDER_BD_NUM_ST_REG 0x650
+#define SEC_Q_INORDER_GET_FLAG_ST_REG 0x654
+#define SEC_Q_INORDER_ADD_FLAG_ST_REG 0x658
+#define SEC_Q_INORDER_TASK_INT_NUM_LEFT_ST_REG 0x65c
+#define SEC_Q_RD_DONE_PTR_REG 0x660
+#define SEC_Q_CPL_Q_BD_NUM_ST_REG 0x700
+#define SEC_Q_CPL_Q_PTR_ST_REG 0x704
+#define SEC_Q_CPL_Q_H_ADDR_ST_REG 0x708
+#define SEC_Q_CPL_Q_L_ADDR_ST_REG 0x70c
+#define SEC_Q_CPL_TASK_INT_NUM_LEFT_ST_REG 0x710
+#define SEC_Q_WRR_ID_CHECK_REG 0x714
+#define SEC_Q_CPLQ_FULL_CHECK_REG 0x718
+#define SEC_Q_SUCCESS_BD_CNT_REG 0x800
+#define SEC_Q_FAIL_BD_CNT_REG 0x804
+#define SEC_Q_GET_BD_CNT_REG 0x808
+#define SEC_Q_IVLD_CNT_REG 0x80c
+#define SEC_Q_BD_PROC_GET_CNT_REG 0x810
+#define SEC_Q_BD_PROC_DONE_CNT_REG 0x814
+#define SEC_Q_LAT_CLR_REG 0x850
+#define SEC_Q_PKT_LAT_MAX_REG 0x854
+#define SEC_Q_PKT_LAT_AVG_REG 0x858
+#define SEC_Q_PKT_LAT_MIN_REG 0x85c
+#define SEC_Q_ID_CLR_CFG_REG 0x900
+#define SEC_Q_1ST_BD_ERR_ID_REG 0x904
+#define SEC_Q_1ST_AUTH_FAIL_ID_REG 0x908
+#define SEC_Q_1ST_RD_ERR_ID_REG 0x90c
+#define SEC_Q_1ST_ECC2_ERR_ID_REG 0x910
+#define SEC_Q_1ST_IVLD_ID_REG 0x914
+#define SEC_Q_1ST_BD_WR_ERR_ID_REG 0x918
+#define SEC_Q_1ST_ERR_BD_WR_ERR_ID_REG 0x91c
+#define SEC_Q_1ST_BD_MAC_WR_ERR_ID_REG 0x920
+
+struct sec_debug_bd_info {
+#define SEC_DEBUG_BD_INFO_SOFT_ERR_CHECK_M GENMASK(22, 0)
+ u32 soft_err_check;
+#define SEC_DEBUG_BD_INFO_HARD_ERR_CHECK_M GENMASK(9, 0)
+ u32 hard_err_check;
+ u32 icv_mac1st_word;
+#define SEC_DEBUG_BD_INFO_GET_ID_M GENMASK(19, 0)
+ u32 sec_get_id;
+ /* W4---W15 */
+ u32 reserv_left[12];
+};
+
+struct sec_out_bd_info {
+#define SEC_OUT_BD_INFO_Q_ID_M GENMASK(11, 0)
+#define SEC_OUT_BD_INFO_ECC_2BIT_ERR BIT(14)
+ u16 data;
+};
+
+#define SEC_MAX_DEVICES 8
+static struct sec_dev_info *sec_devices[SEC_MAX_DEVICES];
+static DEFINE_MUTEX(sec_id_lock);
+
+static int sec_queue_map_io(struct sec_queue *queue)
+{
+ struct device *dev = queue->dev_info->dev;
+ struct resource *res;
+
+ res = platform_get_resource(to_platform_device(dev),
+ IORESOURCE_MEM,
+ 2 + queue->queue_id);
+ if (!res) {
+ dev_err(dev, "Failed to get queue %d memory resource\n",
+ queue->queue_id);
+ return -ENOMEM;
+ }
+ queue->regs = ioremap(res->start, resource_size(res));
+ if (!queue->regs)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static void sec_queue_unmap_io(struct sec_queue *queue)
+{
+ iounmap(queue->regs);
+}
+
+static int sec_queue_ar_pkgattr(struct sec_queue *queue, u32 ar_pkg)
+{
+ void __iomem *addr = queue->regs + SEC_Q_ARUSER_CFG_REG;
+ u32 regval;
+
+ regval = readl_relaxed(addr);
+ if (ar_pkg)
+ regval |= SEC_Q_ARUSER_CFG_PKG;
+ else
+ regval &= ~SEC_Q_ARUSER_CFG_PKG;
+ writel_relaxed(regval, addr);
+
+ return 0;
+}
+
+static int sec_queue_aw_pkgattr(struct sec_queue *queue, u32 aw_pkg)
+{
+ void __iomem *addr = queue->regs + SEC_Q_AWUSER_CFG_REG;
+ u32 regval;
+
+ regval = readl_relaxed(addr);
+ regval |= SEC_Q_AWUSER_CFG_PKG;
+ writel_relaxed(regval, addr);
+
+ return 0;
+}
+
+static int sec_clk_en(struct sec_dev_info *info)
+{
+ void __iomem *base = info->regs[SEC_COMMON];
+ u32 i = 0;
+
+ writel_relaxed(0x7, base + SEC_ALGSUB_CLK_EN_REG);
+ do {
+ usleep_range(1000, 10000);
+ if ((readl_relaxed(base + SEC_ALGSUB_CLK_ST_REG) & 0x7) == 0x7)
+ return 0;
+ i++;
+ } while (i < 10);
+ dev_err(info->dev, "sec clock enable fail!\n");
+
+ return -EIO;
+}
+
+static int sec_clk_dis(struct sec_dev_info *info)
+{
+ void __iomem *base = info->regs[SEC_COMMON];
+ u32 i = 0;
+
+ writel_relaxed(0x7, base + SEC_ALGSUB_CLK_DIS_REG);
+ do {
+ usleep_range(1000, 10000);
+ if ((readl_relaxed(base + SEC_ALGSUB_CLK_ST_REG) & 0x7) == 0)
+ return 0;
+ i++;
+ } while (i < 10);
+ dev_err(info->dev, "sec clock disable fail!\n");
+
+ return -EIO;
+}
+
+static int sec_reset_whole_module(struct sec_dev_info *info)
+{
+ void __iomem *base = info->regs[SEC_COMMON];
+ bool is_reset, b_is_reset;
+ u32 i = 0;
+
+ writel_relaxed(1, base + SEC_ALGSUB_RST_REQ_REG);
+ writel_relaxed(1, base + SEC_ALGSUB_BUILD_RST_REQ_REG);
+ while (1) {
+ usleep_range(1000, 10000);
+ is_reset = readl_relaxed(base + SEC_ALGSUB_RST_ST_REG) &
+ SEC_ALGSUB_RST_ST_IS_RST;
+ b_is_reset = readl_relaxed(base + SEC_ALGSUB_BUILD_RST_ST_REG) &
+ SEC_ALGSUB_BUILD_RST_ST_IS_RST;
+ if (is_reset && b_is_reset)
+ break;
+ i++;
+ if (i > 10) {
+ dev_err(info->dev, "Reset req failed\n");
+ return -EIO;
+ }
+ }
+
+ i = 0;
+ writel_relaxed(1, base + SEC_ALGSUB_RST_DREQ_REG);
+ writel_relaxed(1, base + SEC_ALGSUB_BUILD_RST_DREQ_REG);
+ while (1) {
+ usleep_range(1000, 10000);
+ is_reset = readl_relaxed(base + SEC_ALGSUB_RST_ST_REG) &
+ SEC_ALGSUB_RST_ST_IS_RST;
+ b_is_reset = readl_relaxed(base + SEC_ALGSUB_BUILD_RST_ST_REG) &
+ SEC_ALGSUB_BUILD_RST_ST_IS_RST;
+ if (!is_reset && !b_is_reset)
+ break;
+
+ i++;
+ if (i > 10) {
+ dev_err(info->dev, "Reset dreq failed\n");
+ return -EIO;
+ }
+ }
+
+ return 0;
+}
+
+static void sec_bd_endian_little(struct sec_dev_info *info)
+{
+ void __iomem *addr = info->regs[SEC_SAA] + SEC_CTRL2_REG;
+ u32 regval;
+
+ regval = readl_relaxed(addr);
+ regval &= ~(SEC_CTRL2_ENDIAN_BD | SEC_CTRL2_ENDIAN_BD_TYPE);
+ writel_relaxed(regval, addr);
+}
+
+/*
+ * sec_cache_config - configure optimum cache placement
+ */
+static void sec_cache_config(struct sec_dev_info *info)
+{
+ struct iommu_domain *domain;
+ void __iomem *addr = info->regs[SEC_SAA] + SEC_CTRL_REG;
+
+ domain = iommu_get_domain_for_dev(info->dev);
+
+ /* Check that translation is occurring */
+ if (domain && (domain->type & __IOMMU_DOMAIN_PAGING))
+ writel_relaxed(0x44cf9e, addr);
+ else
+ writel_relaxed(0x4cfd9, addr);
+}
+
+static void sec_data_axiwr_otsd_cfg(struct sec_dev_info *info, u32 cfg)
+{
+ void __iomem *addr = info->regs[SEC_SAA] + SEC_CTRL2_REG;
+ u32 regval;
+
+ regval = readl_relaxed(addr);
+ regval &= ~SEC_CTRL2_DATA_AXI_WR_OTSD_CFG_M;
+ regval |= (cfg << SEC_CTRL2_DATA_AXI_WR_OTSD_CFG_S) &
+ SEC_CTRL2_DATA_AXI_WR_OTSD_CFG_M;
+ writel_relaxed(regval, addr);
+}
+
+static void sec_data_axird_otsd_cfg(struct sec_dev_info *info, u32 cfg)
+{
+ void __iomem *addr = info->regs[SEC_SAA] + SEC_CTRL2_REG;
+ u32 regval;
+
+ regval = readl_relaxed(addr);
+ regval &= ~SEC_CTRL2_DATA_AXI_RD_OTSD_CFG_M;
+ regval |= (cfg << SEC_CTRL2_DATA_AXI_RD_OTSD_CFG_S) &
+ SEC_CTRL2_DATA_AXI_RD_OTSD_CFG_M;
+ writel_relaxed(regval, addr);
+}
+
+static void sec_clk_gate_en(struct sec_dev_info *info, bool clkgate)
+{
+ void __iomem *addr = info->regs[SEC_SAA] + SEC_CTRL2_REG;
+ u32 regval;
+
+ regval = readl_relaxed(addr);
+ if (clkgate)
+ regval |= SEC_CTRL2_CLK_GATE_EN;
+ else
+ regval &= ~SEC_CTRL2_CLK_GATE_EN;
+ writel_relaxed(regval, addr);
+}
+
+static void sec_comm_cnt_cfg(struct sec_dev_info *info, bool clr_ce)
+{
+ void __iomem *addr = info->regs[SEC_SAA] + SEC_COMMON_CNT_CLR_CE_REG;
+ u32 regval;
+
+ regval = readl_relaxed(addr);
+ if (clr_ce)
+ regval |= SEC_COMMON_CNT_CLR_CE_CLEAR;
+ else
+ regval &= ~SEC_COMMON_CNT_CLR_CE_CLEAR;
+ writel_relaxed(regval, addr);
+}
+
+static void sec_commsnap_en(struct sec_dev_info *info, bool snap_en)
+{
+ void __iomem *addr = info->regs[SEC_SAA] + SEC_COMMON_CNT_CLR_CE_REG;
+ u32 regval;
+
+ regval = readl_relaxed(addr);
+ if (snap_en)
+ regval |= SEC_COMMON_CNT_CLR_CE_SNAP_EN;
+ else
+ regval &= ~SEC_COMMON_CNT_CLR_CE_SNAP_EN;
+ writel_relaxed(regval, addr);
+}
+
+static void sec_ipv6_hashmask(struct sec_dev_info *info, u32 hash_mask[])
+{
+ void __iomem *base = info->regs[SEC_SAA];
+ int i;
+
+ for (i = 0; i < 10; i++)
+ writel_relaxed(hash_mask[0],
+ base + SEC_IPV6_MASK_TABLE_X_REG(i));
+}
+
+static int sec_ipv4_hashmask(struct sec_dev_info *info, u32 hash_mask)
+{
+ if (hash_mask & SEC_HASH_IPV4_MASK) {
+ dev_err(info->dev, "Sec Ipv4 Hash Mask Input Error!\n ");
+ return -EINVAL;
+ }
+
+ writel_relaxed(hash_mask,
+ info->regs[SEC_SAA] + SEC_IPV4_MASK_TABLE_REG);
+
+ return 0;
+}
+
+static void sec_set_dbg_bd_cfg(struct sec_dev_info *info, u32 cfg)
+{
+ void __iomem *addr = info->regs[SEC_SAA] + SEC_DEBUG_BD_CFG_REG;
+ u32 regval;
+
+ regval = readl_relaxed(addr);
+ /* Always disable write back of normal bd */
+ regval &= ~SEC_DEBUG_BD_CFG_WB_NORMAL;
+
+ if (cfg)
+ regval &= ~SEC_DEBUG_BD_CFG_WB_EN;
+ else
+ regval |= SEC_DEBUG_BD_CFG_WB_EN;
+
+ writel_relaxed(regval, addr);
+}
+
+static void sec_saa_getqm_en(struct sec_dev_info *info, u32 saa_indx, u32 en)
+{
+ void __iomem *addr = info->regs[SEC_SAA] + SEC_SAA_BASE +
+ SEC_SAA_CTRL_REG(saa_indx);
+ u32 regval;
+
+ regval = readl_relaxed(addr);
+ if (en)
+ regval |= SEC_SAA_CTRL_GET_QM_EN;
+ else
+ regval &= ~SEC_SAA_CTRL_GET_QM_EN;
+ writel_relaxed(regval, addr);
+}
+
+static void sec_saa_int_mask(struct sec_dev_info *info, u32 saa_indx,
+ u32 saa_int_mask)
+{
+ writel_relaxed(saa_int_mask,
+ info->regs[SEC_SAA] + SEC_SAA_BASE + SEC_ST_INTMSK1_REG +
+ saa_indx * SEC_SAA_ADDR_SIZE);
+}
+
+static void sec_streamid(struct sec_dev_info *info, int i)
+{
+ #define SEC_SID 0x600
+ #define SEC_VMID 0
+
+ writel_relaxed((SEC_VMID | ((SEC_SID & 0xffff) << 8)),
+ info->regs[SEC_SAA] + SEC_Q_VMID_CFG_REG(i));
+}
+
+static void sec_queue_ar_alloc(struct sec_queue *queue, u32 alloc)
+{
+ void __iomem *addr = queue->regs + SEC_Q_ARUSER_CFG_REG;
+ u32 regval;
+
+ regval = readl_relaxed(addr);
+ if (alloc == SEC_QUEUE_AR_FROCE_ALLOC) {
+ regval |= SEC_Q_ARUSER_CFG_FA;
+ regval &= ~SEC_Q_ARUSER_CFG_FNA;
+ } else {
+ regval &= ~SEC_Q_ARUSER_CFG_FA;
+ regval |= SEC_Q_ARUSER_CFG_FNA;
+ }
+
+ writel_relaxed(regval, addr);
+}
+
+static void sec_queue_aw_alloc(struct sec_queue *queue, u32 alloc)
+{
+ void __iomem *addr = queue->regs + SEC_Q_AWUSER_CFG_REG;
+ u32 regval;
+
+ regval = readl_relaxed(addr);
+ if (alloc == SEC_QUEUE_AW_FROCE_ALLOC) {
+ regval |= SEC_Q_AWUSER_CFG_FA;
+ regval &= ~SEC_Q_AWUSER_CFG_FNA;
+ } else {
+ regval &= ~SEC_Q_AWUSER_CFG_FA;
+ regval |= SEC_Q_AWUSER_CFG_FNA;
+ }
+
+ writel_relaxed(regval, addr);
+}
+
+static void sec_queue_reorder(struct sec_queue *queue, bool reorder)
+{
+ void __iomem *base = queue->regs;
+ u32 regval;
+
+ regval = readl_relaxed(base + SEC_Q_CFG_REG);
+ if (reorder)
+ regval |= SEC_Q_CFG_REORDER;
+ else
+ regval &= ~SEC_Q_CFG_REORDER;
+ writel_relaxed(regval, base + SEC_Q_CFG_REG);
+}
+
+static void sec_queue_depth(struct sec_queue *queue, u32 depth)
+{
+ void __iomem *addr = queue->regs + SEC_Q_DEPTH_CFG_REG;
+ u32 regval;
+
+ regval = readl_relaxed(addr);
+ regval &= ~SEC_Q_DEPTH_CFG_DEPTH_M;
+ regval |= (depth << SEC_Q_DEPTH_CFG_DEPTH_S) & SEC_Q_DEPTH_CFG_DEPTH_M;
+
+ writel_relaxed(regval, addr);
+}
+
+static void sec_queue_cmdbase_addr(struct sec_queue *queue, u64 addr)
+{
+ writel_relaxed(upper_32_bits(addr), queue->regs + SEC_Q_BASE_HADDR_REG);
+ writel_relaxed(lower_32_bits(addr), queue->regs + SEC_Q_BASE_LADDR_REG);
+}
+
+static void sec_queue_outorder_addr(struct sec_queue *queue, u64 addr)
+{
+ writel_relaxed(upper_32_bits(addr),
+ queue->regs + SEC_Q_OUTORDER_BASE_HADDR_REG);
+ writel_relaxed(lower_32_bits(addr),
+ queue->regs + SEC_Q_OUTORDER_BASE_LADDR_REG);
+}
+
+static void sec_queue_errbase_addr(struct sec_queue *queue, u64 addr)
+{
+ writel_relaxed(upper_32_bits(addr),
+ queue->regs + SEC_Q_ERR_BASE_HADDR_REG);
+ writel_relaxed(lower_32_bits(addr),
+ queue->regs + SEC_Q_ERR_BASE_LADDR_REG);
+}
+
+static void sec_queue_irq_disable(struct sec_queue *queue)
+{
+ writel_relaxed((u32)~0, queue->regs + SEC_Q_FLOW_INT_MKS_REG);
+}
+
+static void sec_queue_irq_enable(struct sec_queue *queue)
+{
+ writel_relaxed(0, queue->regs + SEC_Q_FLOW_INT_MKS_REG);
+}
+
+static void sec_queue_abn_irq_disable(struct sec_queue *queue)
+{
+ writel_relaxed((u32)~0, queue->regs + SEC_Q_FAIL_INT_MSK_REG);
+}
+
+static void sec_queue_stop(struct sec_queue *queue)
+{
+ disable_irq(queue->task_irq);
+ sec_queue_irq_disable(queue);
+ writel_relaxed(0x0, queue->regs + SEC_QUEUE_ENB_REG);
+}
+
+static void sec_queue_start(struct sec_queue *queue)
+{
+ sec_queue_irq_enable(queue);
+ enable_irq(queue->task_irq);
+ queue->expected = 0;
+ writel_relaxed(SEC_Q_INIT_AND_STAT_CLEAR, queue->regs + SEC_Q_INIT_REG);
+ writel_relaxed(0x1, queue->regs + SEC_QUEUE_ENB_REG);
+}
+
+static struct sec_queue *sec_alloc_queue(struct sec_dev_info *info)
+{
+ int i;
+
+ mutex_lock(&info->dev_lock);
+
+ /* Get the first idle queue in SEC device */
+ for (i = 0; i < SEC_Q_NUM; i++)
+ if (!info->queues[i].in_use) {
+ info->queues[i].in_use = true;
+ info->queues_in_use++;
+ mutex_unlock(&info->dev_lock);
+
+ return &info->queues[i];
+ }
+ mutex_unlock(&info->dev_lock);
+
+ return ERR_PTR(-ENODEV);
+}
+
+static int sec_queue_free(struct sec_queue *queue)
+{
+ struct sec_dev_info *info = queue->dev_info;
+
+ if (queue->queue_id >= SEC_Q_NUM) {
+ dev_err(info->dev, "No queue %d\n", queue->queue_id);
+ return -ENODEV;
+ }
+
+ if (!queue->in_use) {
+ dev_err(info->dev, "Queue %d is idle\n", queue->queue_id);
+ return -ENODEV;
+ }
+
+ mutex_lock(&info->dev_lock);
+ queue->in_use = false;
+ info->queues_in_use--;
+ mutex_unlock(&info->dev_lock);
+
+ return 0;
+}
+
+static irqreturn_t sec_isr_handle_th(int irq, void *q)
+{
+ sec_queue_irq_disable(q);
+ return IRQ_WAKE_THREAD;
+}
+
+static irqreturn_t sec_isr_handle(int irq, void *q)
+{
+ struct sec_queue *queue = q;
+ struct sec_queue_ring_cmd *msg_ring = &queue->ring_cmd;
+ struct sec_queue_ring_cq *cq_ring = &queue->ring_cq;
+ struct sec_out_bd_info *outorder_msg;
+ struct sec_bd_info *msg;
+ u32 ooo_read, ooo_write;
+ void __iomem *base = queue->regs;
+ int q_id;
+
+ ooo_read = readl(base + SEC_Q_OUTORDER_RD_PTR_REG);
+ ooo_write = readl(base + SEC_Q_OUTORDER_WR_PTR_REG);
+ outorder_msg = cq_ring->vaddr + ooo_read;
+ q_id = outorder_msg->data & SEC_OUT_BD_INFO_Q_ID_M;
+ msg = msg_ring->vaddr + q_id;
+
+ while ((ooo_write != ooo_read) && msg->w0 & SEC_BD_W0_DONE) {
+ /*
+ * Must be before callback otherwise blocks adding other chained
+ * elements
+ */
+ set_bit(q_id, queue->unprocessed);
+ if (q_id == queue->expected)
+ while (test_bit(queue->expected, queue->unprocessed)) {
+ clear_bit(queue->expected, queue->unprocessed);
+ msg = msg_ring->vaddr + queue->expected;
+ msg->w0 &= ~SEC_BD_W0_DONE;
+ msg_ring->callback(msg,
+ queue->shadow[queue->expected]);
+ queue->shadow[queue->expected] = NULL;
+ queue->expected = (queue->expected + 1) %
+ SEC_QUEUE_LEN;
+ atomic_dec(&msg_ring->used);
+ }
+
+ ooo_read = (ooo_read + 1) % SEC_QUEUE_LEN;
+ writel(ooo_read, base + SEC_Q_OUTORDER_RD_PTR_REG);
+ ooo_write = readl(base + SEC_Q_OUTORDER_WR_PTR_REG);
+ outorder_msg = cq_ring->vaddr + ooo_read;
+ q_id = outorder_msg->data & SEC_OUT_BD_INFO_Q_ID_M;
+ msg = msg_ring->vaddr + q_id;
+ }
+
+ sec_queue_irq_enable(queue);
+
+ return IRQ_HANDLED;
+}
+
+static int sec_queue_irq_init(struct sec_queue *queue)
+{
+ struct sec_dev_info *info = queue->dev_info;
+ int irq = queue->task_irq;
+ int ret;
+
+ ret = request_threaded_irq(irq, sec_isr_handle_th, sec_isr_handle,
+ IRQF_TRIGGER_RISING, queue->name, queue);
+ if (ret) {
+ dev_err(info->dev, "request irq(%d) failed %d\n", irq, ret);
+ return ret;
+ }
+ disable_irq(irq);
+
+ return 0;
+}
+
+static int sec_queue_irq_uninit(struct sec_queue *queue)
+{
+ free_irq(queue->task_irq, queue);
+
+ return 0;
+}
+
+static struct sec_dev_info *sec_device_get(void)
+{
+ struct sec_dev_info *sec_dev = NULL;
+ struct sec_dev_info *this_sec_dev;
+ int least_busy_n = SEC_Q_NUM + 1;
+ int i;
+
+ /* Find which one is least busy and use that first */
+ for (i = 0; i < SEC_MAX_DEVICES; i++) {
+ this_sec_dev = sec_devices[i];
+ if (this_sec_dev &&
+ this_sec_dev->queues_in_use < least_busy_n) {
+ least_busy_n = this_sec_dev->queues_in_use;
+ sec_dev = this_sec_dev;
+ }
+ }
+
+ return sec_dev;
+}
+
+static struct sec_queue *sec_queue_alloc_start(struct sec_dev_info *info)
+{
+ struct sec_queue *queue;
+
+ queue = sec_alloc_queue(info);
+ if (IS_ERR(queue)) {
+ dev_err(info->dev, "alloc sec queue failed! %ld\n",
+ PTR_ERR(queue));
+ return queue;
+ }
+
+ sec_queue_start(queue);
+
+ return queue;
+}
+
+/**
+ * sec_queue_alloc_start_safe - get a hw queue from appropriate instance
+ *
+ * This function does extremely simplistic load balancing. It does not take into
+ * account NUMA locality of the accelerator, or which cpu has requested the
+ * queue. Future work may focus on optimizing this in order to improve full
+ * machine throughput.
+ */
+struct sec_queue *sec_queue_alloc_start_safe(void)
+{
+ struct sec_dev_info *info;
+ struct sec_queue *queue = ERR_PTR(-ENODEV);
+
+ mutex_lock(&sec_id_lock);
+ info = sec_device_get();
+ if (!info)
+ goto unlock;
+
+ queue = sec_queue_alloc_start(info);
+
+unlock:
+ mutex_unlock(&sec_id_lock);
+
+ return queue;
+}
+
+/**
+ * sec_queue_stop_release() - free up a hw queue for reuse
+ * @queue: The queue we are done with.
+ *
+ * This will stop the current queue, terminanting any transactions
+ * that are inflight an return it to the pool of available hw queuess
+ */
+int sec_queue_stop_release(struct sec_queue *queue)
+{
+ struct device *dev = queue->dev_info->dev;
+ int ret;
+
+ sec_queue_stop(queue);
+
+ ret = sec_queue_free(queue);
+ if (ret)
+ dev_err(dev, "Releasing queue failed %d\n", ret);
+
+ return ret;
+}
+
+/**
+ * sec_queue_empty() - Is this hardware queue currently empty.
+ *
+ * We need to know if we have an empty queue for some of the chaining modes
+ * as if it is not empty we may need to hold the message in a software queue
+ * until the hw queue is drained.
+ */
+bool sec_queue_empty(struct sec_queue *queue)
+{
+ struct sec_queue_ring_cmd *msg_ring = &queue->ring_cmd;
+
+ return !atomic_read(&msg_ring->used);
+}
+
+/**
+ * sec_queue_send() - queue up a single operation in the hw queue
+ * @queue: The queue in which to put the message
+ * @msg: The message
+ * @ctx: Context to be put in the shadow array and passed back to cb on result.
+ *
+ * This function will return -EAGAIN if the queue is currently full.
+ */
+int sec_queue_send(struct sec_queue *queue, struct sec_bd_info *msg, void *ctx)
+{
+ struct sec_queue_ring_cmd *msg_ring = &queue->ring_cmd;
+ void __iomem *base = queue->regs;
+ u32 write, read;
+
+ mutex_lock(&msg_ring->lock);
+ read = readl(base + SEC_Q_RD_PTR_REG);
+ write = readl(base + SEC_Q_WR_PTR_REG);
+ if (write == read && atomic_read(&msg_ring->used) == SEC_QUEUE_LEN) {
+ mutex_unlock(&msg_ring->lock);
+ return -EAGAIN;
+ }
+ memcpy(msg_ring->vaddr + write, msg, sizeof(*msg));
+ queue->shadow[write] = ctx;
+ write = (write + 1) % SEC_QUEUE_LEN;
+
+ /* Ensure content updated before queue advance */
+ wmb();
+ writel(write, base + SEC_Q_WR_PTR_REG);
+
+ atomic_inc(&msg_ring->used);
+ mutex_unlock(&msg_ring->lock);
+
+ return 0;
+}
+
+bool sec_queue_can_enqueue(struct sec_queue *queue, int num)
+{
+ struct sec_queue_ring_cmd *msg_ring = &queue->ring_cmd;
+
+ return SEC_QUEUE_LEN - atomic_read(&msg_ring->used) >= num;
+}
+
+static void sec_queue_hw_init(struct sec_queue *queue)
+{
+ sec_queue_ar_alloc(queue, SEC_QUEUE_AR_FROCE_NOALLOC);
+ sec_queue_aw_alloc(queue, SEC_QUEUE_AR_FROCE_NOALLOC);
+ sec_queue_ar_pkgattr(queue, 1);
+ sec_queue_aw_pkgattr(queue, 1);
+
+ /* Enable out of order queue */
+ sec_queue_reorder(queue, true);
+
+ /* Interrupt after a single complete element */
+ writel_relaxed(1, queue->regs + SEC_Q_PROC_NUM_CFG_REG);
+
+ sec_queue_depth(queue, SEC_QUEUE_LEN - 1);
+
+ sec_queue_cmdbase_addr(queue, queue->ring_cmd.paddr);
+
+ sec_queue_outorder_addr(queue, queue->ring_cq.paddr);
+
+ sec_queue_errbase_addr(queue, queue->ring_db.paddr);
+
+ writel_relaxed(0x100, queue->regs + SEC_Q_OT_TH_REG);
+
+ sec_queue_abn_irq_disable(queue);
+ sec_queue_irq_disable(queue);
+ writel_relaxed(SEC_Q_INIT_AND_STAT_CLEAR, queue->regs + SEC_Q_INIT_REG);
+}
+
+static int sec_hw_init(struct sec_dev_info *info)
+{
+ struct iommu_domain *domain;
+ u32 sec_ipv4_mask = 0;
+ u32 sec_ipv6_mask[10] = {};
+ u32 i, ret;
+
+ domain = iommu_get_domain_for_dev(info->dev);
+
+ /*
+ * Enable all available processing unit clocks.
+ * Only the first cluster is usable with translations.
+ */
+ if (domain && (domain->type & __IOMMU_DOMAIN_PAGING))
+ info->num_saas = 5;
+
+ else
+ info->num_saas = 10;
+
+ writel_relaxed(GENMASK(info->num_saas - 1, 0),
+ info->regs[SEC_SAA] + SEC_CLK_EN_REG);
+
+ /* 32 bit little endian */
+ sec_bd_endian_little(info);
+
+ sec_cache_config(info);
+
+ /* Data axi port write and read outstanding config as per datasheet */
+ sec_data_axiwr_otsd_cfg(info, 0x7);
+ sec_data_axird_otsd_cfg(info, 0x7);
+
+ /* Enable clock gating */
+ sec_clk_gate_en(info, true);
+
+ /* Set CNT_CYC register not read clear */
+ sec_comm_cnt_cfg(info, false);
+
+ /* Enable CNT_CYC */
+ sec_commsnap_en(info, false);
+
+ writel_relaxed((u32)~0, info->regs[SEC_SAA] + SEC_FSM_MAX_CNT_REG);
+
+ ret = sec_ipv4_hashmask(info, sec_ipv4_mask);
+ if (ret) {
+ dev_err(info->dev, "Failed to set ipv4 hashmask %d\n", ret);
+ return -EIO;
+ }
+
+ sec_ipv6_hashmask(info, sec_ipv6_mask);
+
+ /* do not use debug bd */
+ sec_set_dbg_bd_cfg(info, 0);
+
+ if (domain && (domain->type & __IOMMU_DOMAIN_PAGING)) {
+ for (i = 0; i < SEC_Q_NUM; i++) {
+ sec_streamid(info, i);
+ /* Same QoS for all queues */
+ writel_relaxed(0x3f,
+ info->regs[SEC_SAA] +
+ SEC_Q_WEIGHT_CFG_REG(i));
+ }
+ }
+
+ for (i = 0; i < info->num_saas; i++) {
+ sec_saa_getqm_en(info, i, 1);
+ sec_saa_int_mask(info, i, 0);
+ }
+
+ return 0;
+}
+
+static void sec_hw_exit(struct sec_dev_info *info)
+{
+ int i;
+
+ for (i = 0; i < SEC_MAX_SAA_NUM; i++) {
+ sec_saa_int_mask(info, i, (u32)~0);
+ sec_saa_getqm_en(info, i, 0);
+ }
+}
+
+static void sec_queue_base_init(struct sec_dev_info *info,
+ struct sec_queue *queue, int queue_id)
+{
+ queue->dev_info = info;
+ queue->queue_id = queue_id;
+ snprintf(queue->name, sizeof(queue->name),
+ "%s_%d", dev_name(info->dev), queue->queue_id);
+}
+
+static int sec_map_io(struct sec_dev_info *info, struct platform_device *pdev)
+{
+ struct resource *res;
+ int i;
+
+ for (i = 0; i < SEC_NUM_ADDR_REGIONS; i++) {
+ res = platform_get_resource(pdev, IORESOURCE_MEM, i);
+
+ if (!res) {
+ dev_err(info->dev, "Memory resource %d not found\n", i);
+ return -EINVAL;
+ }
+
+ info->regs[i] = devm_ioremap(info->dev, res->start,
+ resource_size(res));
+ if (!info->regs[i]) {
+ dev_err(info->dev,
+ "Memory resource %d could not be remapped\n",
+ i);
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+static int sec_base_init(struct sec_dev_info *info,
+ struct platform_device *pdev)
+{
+ int ret;
+
+ ret = sec_map_io(info, pdev);
+ if (ret)
+ return ret;
+
+ ret = sec_clk_en(info);
+ if (ret)
+ return ret;
+
+ ret = sec_reset_whole_module(info);
+ if (ret)
+ goto sec_clk_disable;
+
+ ret = sec_hw_init(info);
+ if (ret)
+ goto sec_clk_disable;
+
+ return 0;
+
+sec_clk_disable:
+ sec_clk_dis(info);
+
+ return ret;
+}
+
+static void sec_base_exit(struct sec_dev_info *info)
+{
+ sec_hw_exit(info);
+ sec_clk_dis(info);
+}
+
+#define SEC_Q_CMD_SIZE \
+ round_up(SEC_QUEUE_LEN * sizeof(struct sec_bd_info), PAGE_SIZE)
+#define SEC_Q_CQ_SIZE \
+ round_up(SEC_QUEUE_LEN * sizeof(struct sec_out_bd_info), PAGE_SIZE)
+#define SEC_Q_DB_SIZE \
+ round_up(SEC_QUEUE_LEN * sizeof(struct sec_debug_bd_info), PAGE_SIZE)
+
+static int sec_queue_res_cfg(struct sec_queue *queue)
+{
+ struct device *dev = queue->dev_info->dev;
+ struct sec_queue_ring_cmd *ring_cmd = &queue->ring_cmd;
+ struct sec_queue_ring_cq *ring_cq = &queue->ring_cq;
+ struct sec_queue_ring_db *ring_db = &queue->ring_db;
+ int ret;
+
+ ring_cmd->vaddr = dma_zalloc_coherent(dev, SEC_Q_CMD_SIZE,
+ &ring_cmd->paddr,
+ GFP_KERNEL);
+ if (!ring_cmd->vaddr)
+ return -ENOMEM;
+
+ atomic_set(&ring_cmd->used, 0);
+ mutex_init(&ring_cmd->lock);
+ ring_cmd->callback = sec_alg_callback;
+
+ ring_cq->vaddr = dma_zalloc_coherent(dev, SEC_Q_CQ_SIZE,
+ &ring_cq->paddr,
+ GFP_KERNEL);
+ if (!ring_cq->vaddr) {
+ ret = -ENOMEM;
+ goto err_free_ring_cmd;
+ }
+
+ ring_db->vaddr = dma_zalloc_coherent(dev, SEC_Q_DB_SIZE,
+ &ring_db->paddr,
+ GFP_KERNEL);
+ if (!ring_db->vaddr) {
+ ret = -ENOMEM;
+ goto err_free_ring_cq;
+ }
+ queue->task_irq = platform_get_irq(to_platform_device(dev),
+ queue->queue_id * 2 + 1);
+ if (queue->task_irq <= 0) {
+ ret = -EINVAL;
+ goto err_free_ring_db;
+ }
+
+ return 0;
+
+err_free_ring_db:
+ dma_free_coherent(dev, SEC_Q_DB_SIZE, queue->ring_db.vaddr,
+ queue->ring_db.paddr);
+err_free_ring_cq:
+ dma_free_coherent(dev, SEC_Q_CQ_SIZE, queue->ring_cq.vaddr,
+ queue->ring_cq.paddr);
+err_free_ring_cmd:
+ dma_free_coherent(dev, SEC_Q_CMD_SIZE, queue->ring_cmd.vaddr,
+ queue->ring_cmd.paddr);
+
+ return ret;
+}
+
+static void sec_queue_free_ring_pages(struct sec_queue *queue)
+{
+ struct device *dev = queue->dev_info->dev;
+
+ dma_free_coherent(dev, SEC_Q_DB_SIZE, queue->ring_db.vaddr,
+ queue->ring_db.paddr);
+ dma_free_coherent(dev, SEC_Q_CQ_SIZE, queue->ring_cq.vaddr,
+ queue->ring_cq.paddr);
+ dma_free_coherent(dev, SEC_Q_CMD_SIZE, queue->ring_cmd.vaddr,
+ queue->ring_cmd.paddr);
+}
+
+static int sec_queue_config(struct sec_dev_info *info, struct sec_queue *queue,
+ int queue_id)
+{
+ int ret;
+
+ sec_queue_base_init(info, queue, queue_id);
+
+ ret = sec_queue_res_cfg(queue);
+ if (ret)
+ return ret;
+
+ ret = sec_queue_map_io(queue);
+ if (ret) {
+ dev_err(info->dev, "Queue map failed %d\n", ret);
+ sec_queue_free_ring_pages(queue);
+ return ret;
+ }
+
+ sec_queue_hw_init(queue);
+
+ return 0;
+}
+
+static void sec_queue_unconfig(struct sec_dev_info *info,
+ struct sec_queue *queue)
+{
+ sec_queue_unmap_io(queue);
+ sec_queue_free_ring_pages(queue);
+}
+
+static int sec_id_alloc(struct sec_dev_info *info)
+{
+ int ret = 0;
+ int i;
+
+ mutex_lock(&sec_id_lock);
+
+ for (i = 0; i < SEC_MAX_DEVICES; i++)
+ if (!sec_devices[i])
+ break;
+ if (i == SEC_MAX_DEVICES) {
+ ret = -ENOMEM;
+ goto unlock;
+ }
+ info->sec_id = i;
+ sec_devices[info->sec_id] = info;
+
+unlock:
+ mutex_unlock(&sec_id_lock);
+
+ return ret;
+}
+
+static void sec_id_free(struct sec_dev_info *info)
+{
+ mutex_lock(&sec_id_lock);
+ sec_devices[info->sec_id] = NULL;
+ mutex_unlock(&sec_id_lock);
+}
+
+static int sec_probe(struct platform_device *pdev)
+{
+ struct sec_dev_info *info;
+ struct device *dev = &pdev->dev;
+ int i, j;
+ int ret;
+
+ ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
+ if (ret) {
+ dev_err(dev, "Failed to set 64 bit dma mask %d", ret);
+ return -ENODEV;
+ }
+
+ info = devm_kzalloc(dev, (sizeof(*info)), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->dev = dev;
+ mutex_init(&info->dev_lock);
+
+ info->hw_sgl_pool = dmam_pool_create("sgl", dev,
+ sizeof(struct sec_hw_sgl), 64, 0);
+ if (!info->hw_sgl_pool) {
+ dev_err(dev, "Failed to create sec sgl dma pool\n");
+ return -ENOMEM;
+ }
+
+ ret = sec_base_init(info, pdev);
+ if (ret) {
+ dev_err(dev, "Base initialization fail! %d\n", ret);
+ return ret;
+ }
+
+ for (i = 0; i < SEC_Q_NUM; i++) {
+ ret = sec_queue_config(info, &info->queues[i], i);
+ if (ret)
+ goto queues_unconfig;
+
+ ret = sec_queue_irq_init(&info->queues[i]);
+ if (ret) {
+ sec_queue_unconfig(info, &info->queues[i]);
+ goto queues_unconfig;
+ }
+ }
+
+ ret = sec_algs_register();
+ if (ret) {
+ dev_err(dev, "Failed to register algorithms with crypto %d\n",
+ ret);
+ goto queues_unconfig;
+ }
+
+ platform_set_drvdata(pdev, info);
+
+ ret = sec_id_alloc(info);
+ if (ret)
+ goto algs_unregister;
+
+ return 0;
+
+algs_unregister:
+ sec_algs_unregister();
+queues_unconfig:
+ for (j = i - 1; j >= 0; j--) {
+ sec_queue_irq_uninit(&info->queues[j]);
+ sec_queue_unconfig(info, &info->queues[j]);
+ }
+ sec_base_exit(info);
+
+ return ret;
+}
+
+static int sec_remove(struct platform_device *pdev)
+{
+ struct sec_dev_info *info = platform_get_drvdata(pdev);
+ int i;
+
+ /* Unexpose as soon as possible, reuse during remove is fine */
+ sec_id_free(info);
+
+ sec_algs_unregister();
+
+ for (i = 0; i < SEC_Q_NUM; i++) {
+ sec_queue_irq_uninit(&info->queues[i]);
+ sec_queue_unconfig(info, &info->queues[i]);
+ }
+
+ sec_base_exit(info);
+
+ return 0;
+}
+
+static const __maybe_unused struct of_device_id sec_match[] = {
+ { .compatible = "hisilicon,hip06-sec" },
+ { .compatible = "hisilicon,hip07-sec" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, sec_match);
+
+static const __maybe_unused struct acpi_device_id sec_acpi_match[] = {
+ { "HISI02C1", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, sec_acpi_match);
+
+static struct platform_driver sec_driver = {
+ .probe = sec_probe,
+ .remove = sec_remove,
+ .driver = {
+ .name = "hisi_sec_platform_driver",
+ .of_match_table = sec_match,
+ .acpi_match_table = ACPI_PTR(sec_acpi_match),
+ },
+};
+module_platform_driver(sec_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Hisilicon Security Accelerators");
+MODULE_AUTHOR("Zaibo Xu <xuzaibo@huawei.com");
+MODULE_AUTHOR("Jonathan Cameron <jonathan.cameron@huawei.com>");
diff --git a/drivers/crypto/hisilicon/sec/sec_drv.h b/drivers/crypto/hisilicon/sec/sec_drv.h
new file mode 100644
index 000000000000..2d2f186674ba
--- /dev/null
+++ b/drivers/crypto/hisilicon/sec/sec_drv.h
@@ -0,0 +1,428 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2016-2017 Hisilicon Limited. */
+
+#ifndef _SEC_DRV_H_
+#define _SEC_DRV_H_
+
+#include <crypto/algapi.h>
+#include <linux/kfifo.h>
+
+#define SEC_MAX_SGE_NUM 64
+#define SEC_HW_RING_NUM 3
+
+#define SEC_CMD_RING 0
+#define SEC_OUTORDER_RING 1
+#define SEC_DBG_RING 2
+
+/* A reasonable length to balance memory use against flexibility */
+#define SEC_QUEUE_LEN 512
+
+#define SEC_MAX_SGE_NUM 64
+
+struct sec_bd_info {
+#define SEC_BD_W0_T_LEN_M GENMASK(4, 0)
+#define SEC_BD_W0_T_LEN_S 0
+
+#define SEC_BD_W0_C_WIDTH_M GENMASK(6, 5)
+#define SEC_BD_W0_C_WIDTH_S 5
+#define SEC_C_WIDTH_AES_128BIT 0
+#define SEC_C_WIDTH_AES_8BIT 1
+#define SEC_C_WIDTH_AES_1BIT 2
+#define SEC_C_WIDTH_DES_64BIT 0
+#define SEC_C_WIDTH_DES_8BIT 1
+#define SEC_C_WIDTH_DES_1BIT 2
+
+#define SEC_BD_W0_C_MODE_M GENMASK(9, 7)
+#define SEC_BD_W0_C_MODE_S 7
+#define SEC_C_MODE_ECB 0
+#define SEC_C_MODE_CBC 1
+#define SEC_C_MODE_CTR 4
+#define SEC_C_MODE_CCM 5
+#define SEC_C_MODE_GCM 6
+#define SEC_C_MODE_XTS 7
+
+#define SEC_BD_W0_SEQ BIT(10)
+#define SEC_BD_W0_DE BIT(11)
+#define SEC_BD_W0_DAT_SKIP_M GENMASK(13, 12)
+#define SEC_BD_W0_DAT_SKIP_S 12
+#define SEC_BD_W0_C_GRAN_SIZE_19_16_M GENMASK(17, 14)
+#define SEC_BD_W0_C_GRAN_SIZE_19_16_S 14
+
+#define SEC_BD_W0_CIPHER_M GENMASK(19, 18)
+#define SEC_BD_W0_CIPHER_S 18
+#define SEC_CIPHER_NULL 0
+#define SEC_CIPHER_ENCRYPT 1
+#define SEC_CIPHER_DECRYPT 2
+
+#define SEC_BD_W0_AUTH_M GENMASK(21, 20)
+#define SEC_BD_W0_AUTH_S 20
+#define SEC_AUTH_NULL 0
+#define SEC_AUTH_MAC 1
+#define SEC_AUTH_VERIF 2
+
+#define SEC_BD_W0_AI_GEN BIT(22)
+#define SEC_BD_W0_CI_GEN BIT(23)
+#define SEC_BD_W0_NO_HPAD BIT(24)
+#define SEC_BD_W0_HM_M GENMASK(26, 25)
+#define SEC_BD_W0_HM_S 25
+#define SEC_BD_W0_ICV_OR_SKEY_EN_M GENMASK(28, 27)
+#define SEC_BD_W0_ICV_OR_SKEY_EN_S 27
+
+/* Multi purpose field - gran size bits for send, flag for recv */
+#define SEC_BD_W0_FLAG_M GENMASK(30, 29)
+#define SEC_BD_W0_C_GRAN_SIZE_21_20_M GENMASK(30, 29)
+#define SEC_BD_W0_FLAG_S 29
+#define SEC_BD_W0_C_GRAN_SIZE_21_20_S 29
+
+#define SEC_BD_W0_DONE BIT(31)
+ u32 w0;
+
+#define SEC_BD_W1_AUTH_GRAN_SIZE_M GENMASK(21, 0)
+#define SEC_BD_W1_AUTH_GRAN_SIZE_S 0
+#define SEC_BD_W1_M_KEY_EN BIT(22)
+#define SEC_BD_W1_BD_INVALID BIT(23)
+#define SEC_BD_W1_ADDR_TYPE BIT(24)
+
+#define SEC_BD_W1_A_ALG_M GENMASK(28, 25)
+#define SEC_BD_W1_A_ALG_S 25
+#define SEC_A_ALG_SHA1 0
+#define SEC_A_ALG_SHA256 1
+#define SEC_A_ALG_MD5 2
+#define SEC_A_ALG_SHA224 3
+#define SEC_A_ALG_HMAC_SHA1 8
+#define SEC_A_ALG_HMAC_SHA224 10
+#define SEC_A_ALG_HMAC_SHA256 11
+#define SEC_A_ALG_HMAC_MD5 12
+#define SEC_A_ALG_AES_XCBC 13
+#define SEC_A_ALG_AES_CMAC 14
+
+#define SEC_BD_W1_C_ALG_M GENMASK(31, 29)
+#define SEC_BD_W1_C_ALG_S 29
+#define SEC_C_ALG_DES 0
+#define SEC_C_ALG_3DES 1
+#define SEC_C_ALG_AES 2
+
+ u32 w1;
+
+#define SEC_BD_W2_C_GRAN_SIZE_15_0_M GENMASK(15, 0)
+#define SEC_BD_W2_C_GRAN_SIZE_15_0_S 0
+#define SEC_BD_W2_GRAN_NUM_M GENMASK(31, 16)
+#define SEC_BD_W2_GRAN_NUM_S 16
+ u32 w2;
+
+#define SEC_BD_W3_AUTH_LEN_OFFSET_M GENMASK(9, 0)
+#define SEC_BD_W3_AUTH_LEN_OFFSET_S 0
+#define SEC_BD_W3_CIPHER_LEN_OFFSET_M GENMASK(19, 10)
+#define SEC_BD_W3_CIPHER_LEN_OFFSET_S 10
+#define SEC_BD_W3_MAC_LEN_M GENMASK(24, 20)
+#define SEC_BD_W3_MAC_LEN_S 20
+#define SEC_BD_W3_A_KEY_LEN_M GENMASK(29, 25)
+#define SEC_BD_W3_A_KEY_LEN_S 25
+#define SEC_BD_W3_C_KEY_LEN_M GENMASK(31, 30)
+#define SEC_BD_W3_C_KEY_LEN_S 30
+#define SEC_KEY_LEN_AES_128 0
+#define SEC_KEY_LEN_AES_192 1
+#define SEC_KEY_LEN_AES_256 2
+#define SEC_KEY_LEN_DES 1
+#define SEC_KEY_LEN_3DES_3_KEY 1
+#define SEC_KEY_LEN_3DES_2_KEY 3
+ u32 w3;
+
+ /* W4,5 */
+ union {
+ u32 authkey_addr_lo;
+ u32 authiv_addr_lo;
+ };
+ union {
+ u32 authkey_addr_hi;
+ u32 authiv_addr_hi;
+ };
+
+ /* W6,7 */
+ u32 cipher_key_addr_lo;
+ u32 cipher_key_addr_hi;
+
+ /* W8,9 */
+ u32 cipher_iv_addr_lo;
+ u32 cipher_iv_addr_hi;
+
+ /* W10,11 */
+ u32 data_addr_lo;
+ u32 data_addr_hi;
+
+ /* W12,13 */
+ u32 mac_addr_lo;
+ u32 mac_addr_hi;
+
+ /* W14,15 */
+ u32 cipher_destin_addr_lo;
+ u32 cipher_destin_addr_hi;
+};
+
+enum sec_mem_region {
+ SEC_COMMON = 0,
+ SEC_SAA,
+ SEC_NUM_ADDR_REGIONS
+};
+
+#define SEC_NAME_SIZE 64
+#define SEC_Q_NUM 16
+
+
+/**
+ * struct sec_queue_ring_cmd - store information about a SEC HW cmd ring
+ * @used: Local counter used to cheaply establish if the ring is empty.
+ * @lock: Protect against simultaneous adjusting of the read and write pointers.
+ * @vaddr: Virtual address for the ram pages used for the ring.
+ * @paddr: Physical address of the dma mapped region of ram used for the ring.
+ * @callback: Callback function called on a ring element completing.
+ */
+struct sec_queue_ring_cmd {
+ atomic_t used;
+ struct mutex lock;
+ struct sec_bd_info *vaddr;
+ dma_addr_t paddr;
+ void (*callback)(struct sec_bd_info *resp, void *ctx);
+};
+
+struct sec_debug_bd_info;
+struct sec_queue_ring_db {
+ struct sec_debug_bd_info *vaddr;
+ dma_addr_t paddr;
+};
+
+struct sec_out_bd_info;
+struct sec_queue_ring_cq {
+ struct sec_out_bd_info *vaddr;
+ dma_addr_t paddr;
+};
+
+struct sec_dev_info;
+
+enum sec_cipher_alg {
+ SEC_C_DES_ECB_64,
+ SEC_C_DES_CBC_64,
+
+ SEC_C_3DES_ECB_192_3KEY,
+ SEC_C_3DES_ECB_192_2KEY,
+
+ SEC_C_3DES_CBC_192_3KEY,
+ SEC_C_3DES_CBC_192_2KEY,
+
+ SEC_C_AES_ECB_128,
+ SEC_C_AES_ECB_192,
+ SEC_C_AES_ECB_256,
+
+ SEC_C_AES_CBC_128,
+ SEC_C_AES_CBC_192,
+ SEC_C_AES_CBC_256,
+
+ SEC_C_AES_CTR_128,
+ SEC_C_AES_CTR_192,
+ SEC_C_AES_CTR_256,
+
+ SEC_C_AES_XTS_128,
+ SEC_C_AES_XTS_256,
+
+ SEC_C_NULL,
+};
+
+/**
+ * struct sec_alg_tfm_ctx - hardware specific tranformation context
+ * @cipher_alg: Cipher algorithm enabled include encryption mode.
+ * @key: Key storage if required.
+ * @pkey: DMA address for the key storage.
+ * @req_template: Request template to save time on setup.
+ * @queue: The hardware queue associated with this tfm context.
+ * @lock: Protect key and pkey to ensure they are consistent
+ * @auth_buf: Current context buffer for auth operations.
+ * @backlog: The backlog queue used for cases where our buffers aren't
+ * large enough.
+ */
+struct sec_alg_tfm_ctx {
+ enum sec_cipher_alg cipher_alg;
+ u8 *key;
+ dma_addr_t pkey;
+ struct sec_bd_info req_template;
+ struct sec_queue *queue;
+ struct mutex lock;
+ u8 *auth_buf;
+ struct list_head backlog;
+};
+
+/**
+ * struct sec_request - data associate with a single crypto request
+ * @elements: List of subparts of this request (hardware size restriction)
+ * @num_elements: The number of subparts (used as an optimization)
+ * @lock: Protect elements of this structure against concurrent change.
+ * @tfm_ctx: hardware specific context.
+ * @len_in: length of in sgl from upper layers
+ * @len_out: length of out sgl from upper layers
+ * @dma_iv: initialization vector - phsyical address
+ * @err: store used to track errors across subelements of this request.
+ * @req_base: pointer to base element of associate crypto context.
+ * This is needed to allow shared handling skcipher, ahash etc.
+ * @cb: completion callback.
+ * @backlog_head: list head to allow backlog maintenance.
+ *
+ * The hardware is limited in the maximum size of data that it can
+ * process from a single BD. Typically this is fairly large (32MB)
+ * but still requires the complexity of splitting the incoming
+ * skreq up into a number of elements complete with appropriate
+ * iv chaining.
+ */
+struct sec_request {
+ struct list_head elements;
+ int num_elements;
+ struct mutex lock;
+ struct sec_alg_tfm_ctx *tfm_ctx;
+ int len_in;
+ int len_out;
+ dma_addr_t dma_iv;
+ int err;
+ struct crypto_async_request *req_base;
+ void (*cb)(struct sec_bd_info *resp, struct crypto_async_request *req);
+ struct list_head backlog_head;
+};
+
+/**
+ * struct sec_request_el - A subpart of a request.
+ * @head: allow us to attach this to the list in the sec_request
+ * @req: hardware block descriptor corresponding to this request subpart
+ * @in: hardware sgl for input - virtual address
+ * @dma_in: hardware sgl for input - physical address
+ * @sgl_in: scatterlist for this request subpart
+ * @out: hardware sgl for output - virtual address
+ * @dma_out: hardware sgl for output - physical address
+ * @sgl_out: scatterlist for this request subpart
+ * @sec_req: The request which this subpart forms a part of
+ * @el_length: Number of bytes in this subpart. Needed to locate
+ * last ivsize chunk for iv chaining.
+ */
+struct sec_request_el {
+ struct list_head head;
+ struct sec_bd_info req;
+ struct sec_hw_sgl *in;
+ dma_addr_t dma_in;
+ struct scatterlist *sgl_in;
+ struct sec_hw_sgl *out;
+ dma_addr_t dma_out;
+ struct scatterlist *sgl_out;
+ struct sec_request *sec_req;
+ size_t el_length;
+};
+
+/**
+ * struct sec_queue - All the information about a HW queue
+ * @dev_info: The parent SEC device to which this queue belongs.
+ * @task_irq: Completion interrupt for the queue.
+ * @name: Human readable queue description also used as irq name.
+ * @ring: The several HW rings associated with one queue.
+ * @regs: The iomapped device registers
+ * @queue_id: Index of the queue used for naming and resource selection.
+ * @in_use: Flag to say if the queue is in use.
+ * @expected: The next expected element to finish assuming we were in order.
+ * @uprocessed: A bitmap to track which OoO elements are done but not handled.
+ * @softqueue: A software queue used when chaining requirements prevent direct
+ * use of the hardware queues.
+ * @havesoftqueue: A flag to say we have a queues - as we may need one for the
+ * current mode.
+ * @queuelock: Protect the soft queue from concurrent changes to avoid some
+ * potential loss of data races.
+ * @shadow: Pointers back to the shadow copy of the hardware ring element
+ * need because we can't store any context reference in the bd element.
+ */
+struct sec_queue {
+ struct sec_dev_info *dev_info;
+ int task_irq;
+ char name[SEC_NAME_SIZE];
+ struct sec_queue_ring_cmd ring_cmd;
+ struct sec_queue_ring_cq ring_cq;
+ struct sec_queue_ring_db ring_db;
+ void __iomem *regs;
+ u32 queue_id;
+ bool in_use;
+ int expected;
+
+ DECLARE_BITMAP(unprocessed, SEC_QUEUE_LEN);
+ DECLARE_KFIFO_PTR(softqueue, typeof(struct sec_request_el *));
+ bool havesoftqueue;
+ struct mutex queuelock;
+ void *shadow[SEC_QUEUE_LEN];
+};
+
+/**
+ * struct sec_hw_sge: Track each of the 64 element SEC HW SGL entries
+ * @buf: The IOV dma address for this entry.
+ * @len: Length of this IOV.
+ * @pad: Reserved space.
+ */
+struct sec_hw_sge {
+ dma_addr_t buf;
+ unsigned int len;
+ unsigned int pad;
+};
+
+/**
+ * struct sec_hw_sgl: One hardware SGL entry.
+ * @next_sgl: The next entry if we need to chain dma address. Null if last.
+ * @entry_sum_in_chain: The full count of SGEs - only matters for first SGL.
+ * @entry_sum_in_sgl: The number of SGEs in this SGL element.
+ * @flag: Unused in skciphers.
+ * @serial_num: Unsued in skciphers.
+ * @cpuid: Currently unused.
+ * @data_bytes_in_sgl: Count of bytes from all SGEs in this SGL.
+ * @next: Virtual address used to stash the next sgl - useful in completion.
+ * @reserved: A reserved field not currently used.
+ * @sge_entries: The (up to) 64 Scatter Gather Entries, representing IOVs.
+ * @node: Currently unused.
+ */
+struct sec_hw_sgl {
+ dma_addr_t next_sgl;
+ u16 entry_sum_in_chain;
+ u16 entry_sum_in_sgl;
+ u32 flag;
+ u64 serial_num;
+ u32 cpuid;
+ u32 data_bytes_in_sgl;
+ struct sec_hw_sgl *next;
+ u64 reserved;
+ struct sec_hw_sge sge_entries[SEC_MAX_SGE_NUM];
+ u8 node[16];
+};
+
+struct dma_pool;
+
+/**
+ * struct sec_dev_info: The full SEC unit comprising queues and processors.
+ * @sec_id: Index used to track which SEC this is when more than one is present.
+ * @num_saas: The number of backed processors enabled.
+ * @regs: iomapped register regions shared by whole SEC unit.
+ * @dev_lock: Protects concurrent queue allocation / freeing for the SEC.
+ * @queues: The 16 queues that this SEC instance provides.
+ * @dev: Device pointer.
+ * @hw_sgl_pool: DMA pool used to mimise mapping for the scatter gather lists.
+ */
+struct sec_dev_info {
+ int sec_id;
+ int num_saas;
+ void __iomem *regs[SEC_NUM_ADDR_REGIONS];
+ struct mutex dev_lock;
+ int queues_in_use;
+ struct sec_queue queues[SEC_Q_NUM];
+ struct device *dev;
+ struct dma_pool *hw_sgl_pool;
+};
+
+int sec_queue_send(struct sec_queue *queue, struct sec_bd_info *msg, void *ctx);
+bool sec_queue_can_enqueue(struct sec_queue *queue, int num);
+int sec_queue_stop_release(struct sec_queue *queue);
+struct sec_queue *sec_queue_alloc_start_safe(void);
+bool sec_queue_empty(struct sec_queue *queue);
+
+/* Algorithm specific elements from sec_algs.c */
+void sec_alg_callback(struct sec_bd_info *resp, void *ctx);
+int sec_algs_register(void);
+void sec_algs_unregister(void);
+
+#endif /* _SEC_DRV_H_ */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.