* [PATCH v2 3/3] crypto: qat - Add support for RSA algorithm
2015-07-14 18:32 [PATCH v2 0/3] crypto: qat - add RSA support to qat driver Tadeusz Struk
2015-07-14 18:32 ` [PATCH v2 1/3] crypto: qat - add support for MMP FW Tadeusz Struk
2015-07-14 18:32 ` [PATCH v2 2/3] crypto: qat - add MMP FW support to accel engine Tadeusz Struk
@ 2015-07-14 18:33 ` Tadeusz Struk
2015-07-15 13:03 ` Herbert Xu
2 siblings, 1 reply; 10+ messages in thread
From: Tadeusz Struk @ 2015-07-14 18:33 UTC (permalink / raw)
To: herbert; +Cc: linux-crypto, qat-linux, pingchao.yang, davem, tadeusz.struk
Add RSA support to QAT driver.
Removed unused RNG rings.
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
---
drivers/crypto/qat/Kconfig | 2
drivers/crypto/qat/qat_common/Makefile | 1
drivers/crypto/qat/qat_common/adf_common_drv.h | 10
drivers/crypto/qat/qat_common/adf_init.c | 4
drivers/crypto/qat/qat_common/icp_qat_fw.h | 2
drivers/crypto/qat/qat_common/icp_qat_fw_pke.h | 112 ++++
drivers/crypto/qat/qat_common/qat_algs.c | 5
drivers/crypto/qat/qat_common/qat_asym_algs.c | 613 ++++++++++++++++++++++++
drivers/crypto/qat/qat_common/qat_crypto.c | 19 -
drivers/crypto/qat/qat_common/qat_crypto.h | 2
drivers/crypto/qat/qat_dh895xcc/adf_drv.c | 12
11 files changed, 743 insertions(+), 39 deletions(-)
create mode 100644 drivers/crypto/qat/qat_common/icp_qat_fw_pke.h
create mode 100644 drivers/crypto/qat/qat_common/qat_asym_algs.c
diff --git a/drivers/crypto/qat/Kconfig b/drivers/crypto/qat/Kconfig
index 6fdb9e8..8629469 100644
--- a/drivers/crypto/qat/Kconfig
+++ b/drivers/crypto/qat/Kconfig
@@ -3,6 +3,8 @@ config CRYPTO_DEV_QAT
select CRYPTO_AEAD
select CRYPTO_AUTHENC
select CRYPTO_BLKCIPHER
+ select CRYPTO_AKCIPHER
+ select CRYPTO_RSA
select CRYPTO_HMAC
select CRYPTO_SHA1
select CRYPTO_SHA256
diff --git a/drivers/crypto/qat/qat_common/Makefile b/drivers/crypto/qat/qat_common/Makefile
index e0424dc..e69cdbb 100644
--- a/drivers/crypto/qat/qat_common/Makefile
+++ b/drivers/crypto/qat/qat_common/Makefile
@@ -8,6 +8,7 @@ intel_qat-objs := adf_cfg.o \
adf_transport.o \
qat_crypto.o \
qat_algs.o \
+ qat_asym_algs.o \
qat_uclo.o \
qat_hal.o
diff --git a/drivers/crypto/qat/qat_common/adf_common_drv.h b/drivers/crypto/qat/qat_common/adf_common_drv.h
index 1e82ad4..3c33fee 100644
--- a/drivers/crypto/qat/qat_common/adf_common_drv.h
+++ b/drivers/crypto/qat/qat_common/adf_common_drv.h
@@ -55,7 +55,7 @@
#define ADF_MAJOR_VERSION 0
#define ADF_MINOR_VERSION 1
-#define ADF_BUILD_VERSION 3
+#define ADF_BUILD_VERSION 4
#define ADF_DRV_VERSION __stringify(ADF_MAJOR_VERSION) "." \
__stringify(ADF_MINOR_VERSION) "." \
__stringify(ADF_BUILD_VERSION)
@@ -94,6 +94,11 @@ struct service_hndl {
int admin;
};
+static inline int get_current_node(void)
+{
+ return cpu_data(current_thread_info()->cpu).phys_proc_id;
+}
+
int adf_service_register(struct service_hndl *service);
int adf_service_unregister(struct service_hndl *service);
@@ -141,10 +146,13 @@ int qat_crypto_unregister(void);
struct qat_crypto_instance *qat_crypto_get_instance_node(int node);
void qat_crypto_put_instance(struct qat_crypto_instance *inst);
void qat_alg_callback(void *resp);
+void qat_alg_asym_callback(void *resp);
int qat_algs_init(void);
void qat_algs_exit(void);
int qat_algs_register(void);
int qat_algs_unregister(void);
+int qat_asym_algs_register(void);
+void qat_asym_algs_unregister(void);
int qat_hal_init(struct adf_accel_dev *accel_dev);
void qat_hal_deinit(struct icp_qat_fw_loader_handle *handle);
diff --git a/drivers/crypto/qat/qat_common/adf_init.c b/drivers/crypto/qat/qat_common/adf_init.c
index 245f432..7f9dffa 100644
--- a/drivers/crypto/qat/qat_common/adf_init.c
+++ b/drivers/crypto/qat/qat_common/adf_init.c
@@ -257,7 +257,7 @@ int adf_dev_start(struct adf_accel_dev *accel_dev)
clear_bit(ADF_STATUS_STARTING, &accel_dev->status);
set_bit(ADF_STATUS_STARTED, &accel_dev->status);
- if (qat_algs_register()) {
+ if (qat_algs_register() || qat_asym_algs_register()) {
dev_err(&GET_DEV(accel_dev),
"Failed to register crypto algs\n");
set_bit(ADF_STATUS_STARTING, &accel_dev->status);
@@ -296,6 +296,8 @@ int adf_dev_stop(struct adf_accel_dev *accel_dev)
dev_err(&GET_DEV(accel_dev),
"Failed to unregister crypto algs\n");
+ qat_asym_algs_unregister();
+
list_for_each(list_itr, &service_table) {
service = list_entry(list_itr, struct service_hndl, list);
if (service->admin)
diff --git a/drivers/crypto/qat/qat_common/icp_qat_fw.h b/drivers/crypto/qat/qat_common/icp_qat_fw.h
index f1e30e2..46747f0 100644
--- a/drivers/crypto/qat/qat_common/icp_qat_fw.h
+++ b/drivers/crypto/qat/qat_common/icp_qat_fw.h
@@ -249,6 +249,8 @@ struct icp_qat_fw_comn_resp {
#define QAT_COMN_RESP_CRYPTO_STATUS_BITPOS 7
#define QAT_COMN_RESP_CRYPTO_STATUS_MASK 0x1
+#define QAT_COMN_RESP_PKE_STATUS_BITPOS 6
+#define QAT_COMN_RESP_PKE_STATUS_MASK 0x1
#define QAT_COMN_RESP_CMP_STATUS_BITPOS 5
#define QAT_COMN_RESP_CMP_STATUS_MASK 0x1
#define QAT_COMN_RESP_XLAT_STATUS_BITPOS 4
diff --git a/drivers/crypto/qat/qat_common/icp_qat_fw_pke.h b/drivers/crypto/qat/qat_common/icp_qat_fw_pke.h
new file mode 100644
index 0000000..0d7a9b5
--- /dev/null
+++ b/drivers/crypto/qat/qat_common/icp_qat_fw_pke.h
@@ -0,0 +1,112 @@
+/*
+ This file is provided under a dual BSD/GPLv2 license. When using or
+ redistributing this file, you may do so under either license.
+
+ GPL LICENSE SUMMARY
+ Copyright(c) 2014 Intel Corporation.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of version 2 of the GNU General Public License as
+ published by the Free Software Foundation.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ Contact Information:
+ qat-linux@intel.com
+
+ BSD LICENSE
+ Copyright(c) 2014 Intel Corporation.
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+ * Neither the name of Intel Corporation nor the names of its
+ contributors may be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+#ifndef _ICP_QAT_FW_PKE_
+#define _ICP_QAT_FW_PKE_
+
+#include "icp_qat_fw.h"
+
+struct icp_qat_fw_req_hdr_pke_cd_pars {
+ u64 content_desc_addr;
+ u32 content_desc_resrvd;
+ u32 func_id;
+};
+
+struct icp_qat_fw_req_pke_mid {
+ u64 opaque;
+ u64 src_data_addr;
+ u64 dest_data_addr;
+};
+
+struct icp_qat_fw_req_pke_hdr {
+ u8 resrvd1;
+ u8 resrvd2;
+ u8 service_type;
+ u8 hdr_flags;
+ u16 comn_req_flags;
+ u16 resrvd4;
+ struct icp_qat_fw_req_hdr_pke_cd_pars cd_pars;
+};
+
+struct icp_qat_fw_pke_request {
+ struct icp_qat_fw_req_pke_hdr pke_hdr;
+ struct icp_qat_fw_req_pke_mid pke_mid;
+ u8 output_param_count;
+ u8 input_param_count;
+ u16 resrvd1;
+ u32 resrvd2;
+ u64 next_req_adr;
+};
+
+struct icp_qat_fw_resp_pke_hdr {
+ u8 resrvd1;
+ u8 resrvd2;
+ u8 response_type;
+ u8 hdr_flags;
+ u16 comn_resp_flags;
+ u16 resrvd4;
+};
+
+struct icp_qat_fw_pke_resp {
+ struct icp_qat_fw_resp_pke_hdr pke_resp_hdr;
+ u64 opaque;
+ u64 src_data_addr;
+ u64 dest_data_addr;
+};
+
+#define ICP_QAT_FW_PKE_HDR_VALID_FLAG_BITPOS 7
+#define ICP_QAT_FW_PKE_HDR_VALID_FLAG_MASK 0x1
+#define ICP_QAT_FW_PKE_RESP_PKE_STAT_GET(status_word) \
+ QAT_FIELD_GET(((status_word >> ICP_QAT_FW_COMN_ONE_BYTE_SHIFT) & \
+ ICP_QAT_FW_COMN_SINGLE_BYTE_MASK), \
+ QAT_COMN_RESP_PKE_STATUS_BITPOS, \
+ QAT_COMN_RESP_PKE_STATUS_MASK)
+
+#define ICP_QAT_FW_PKE_HDR_VALID_FLAG_SET(hdr_t, val) \
+ QAT_FIELD_SET((hdr_t.hdr_flags), (val), \
+ ICP_QAT_FW_PKE_HDR_VALID_FLAG_BITPOS, \
+ ICP_QAT_FW_PKE_HDR_VALID_FLAG_MASK)
+#endif
diff --git a/drivers/crypto/qat/qat_common/qat_algs.c b/drivers/crypto/qat/qat_common/qat_algs.c
index 067402c..31abfd0 100644
--- a/drivers/crypto/qat/qat_common/qat_algs.c
+++ b/drivers/crypto/qat/qat_common/qat_algs.c
@@ -129,11 +129,6 @@ struct qat_alg_ablkcipher_ctx {
spinlock_t lock; /* protects qat_alg_ablkcipher_ctx struct */
};
-static int get_current_node(void)
-{
- return cpu_data(current_thread_info()->cpu).phys_proc_id;
-}
-
static int qat_get_inter_state_size(enum icp_qat_hw_auth_algo qat_hash_alg)
{
switch (qat_hash_alg) {
diff --git a/drivers/crypto/qat/qat_common/qat_asym_algs.c b/drivers/crypto/qat/qat_common/qat_asym_algs.c
new file mode 100644
index 0000000..5db476c
--- /dev/null
+++ b/drivers/crypto/qat/qat_common/qat_asym_algs.c
@@ -0,0 +1,613 @@
+/*
+ This file is provided under a dual BSD/GPLv2 license. When using or
+ redistributing this file, you may do so under either license.
+
+ GPL LICENSE SUMMARY
+ Copyright(c) 2014 Intel Corporation.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of version 2 of the GNU General Public License as
+ published by the Free Software Foundation.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ Contact Information:
+ qat-linux@intel.com
+
+ BSD LICENSE
+ Copyright(c) 2014 Intel Corporation.
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+ * Neither the name of Intel Corporation nor the names of its
+ contributors may be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <linux/module.h>
+#include <crypto/internal/rsa.h>
+#include <crypto/internal/akcipher.h>
+#include <crypto/akcipher.h>
+#include <linux/dma-mapping.h>
+#include "icp_qat_fw_pke.h"
+#include "adf_accel_devices.h"
+#include "adf_transport.h"
+#include "adf_common_drv.h"
+#include "qat_crypto.h"
+
+struct qat_rsa_input_params {
+ union {
+ struct {
+ dma_addr_t m;
+ dma_addr_t e;
+ dma_addr_t n;
+ } enc;
+ struct {
+ dma_addr_t c;
+ dma_addr_t d;
+ dma_addr_t n;
+ } dec;
+ u64 in_tab[8];
+ };
+} __packed __aligned(64);
+
+struct qat_rsa_output_params {
+ union {
+ struct {
+ dma_addr_t c;
+ } enc;
+ struct {
+ dma_addr_t m;
+ } dec;
+ u64 out_tab[8];
+ };
+} __packed __aligned(64);
+
+struct qat_rsa_ctx {
+ char *n;
+ char *e;
+ char *d;
+ dma_addr_t dma_n;
+ dma_addr_t dma_e;
+ dma_addr_t dma_d;
+ struct rsa_key key;
+ unsigned int key_sz;
+ struct qat_crypto_instance *inst;
+ struct crypto_akcipher *fallback;
+} __packed __aligned(64);
+
+struct qat_rsa_request {
+ struct qat_rsa_input_params in;
+ struct qat_rsa_output_params out;
+ dma_addr_t phy_in;
+ dma_addr_t phy_out;
+ char *src_align;
+ struct icp_qat_fw_pke_request req;
+ struct qat_rsa_ctx *ctx;
+ unsigned int param_sz;
+ int err;
+} __aligned(64);
+
+static void qat_rsa_cb(struct icp_qat_fw_pke_resp *resp)
+{
+ struct akcipher_request *areq = (void *)(__force long)resp->opaque;
+ struct qat_rsa_request *req = PTR_ALIGN(akcipher_request_ctx(areq), 64);
+ struct device *dev = &GET_DEV(req->ctx->inst->accel_dev);
+ int err = ICP_QAT_FW_PKE_RESP_PKE_STAT_GET(
+ resp->pke_resp_hdr.comn_resp_flags);
+ char *ptr = areq->dst;
+
+ err = (err == ICP_QAT_FW_COMN_STATUS_FLAG_OK) ? 0 : -EINVAL;
+
+ if (req->src_align)
+ dma_free_coherent(dev, req->param_sz, req->src_align,
+ req->in.enc.m);
+ else
+ dma_unmap_single(dev, req->in.enc.m, req->param_sz,
+ DMA_TO_DEVICE);
+
+ dma_unmap_single(dev, req->out.enc.c, req->param_sz, DMA_FROM_DEVICE);
+ dma_unmap_single(dev, req->phy_in, sizeof(struct qat_rsa_input_params),
+ DMA_TO_DEVICE);
+ dma_unmap_single(dev, req->phy_out,
+ sizeof(struct qat_rsa_output_params),
+ DMA_TO_DEVICE);
+
+ areq->dst_len = req->param_sz;
+ /* Need to set the corect length of the output */
+ while (!(*ptr) && areq->dst_len) {
+ areq->dst_len--;
+ ptr++;
+ }
+
+ if (areq->dst_len != req->param_sz)
+ memcpy(areq->dst, ptr, areq->dst_len);
+
+ akcipher_request_complete(areq, err);
+}
+
+void qat_alg_asym_callback(void *_resp)
+{
+ struct icp_qat_fw_pke_resp *resp = _resp;
+
+ qat_rsa_cb(resp);
+}
+
+#define PKE_RSA_EP_512 0x1c161b21
+#define PKE_RSA_EP_1024 0x35111bf7
+#define PKE_RSA_EP_1536 0x4d111cdc
+#define PKE_RSA_EP_2048 0x6e111dba
+#define PKE_RSA_EP_3072 0x7d111ea3
+#define PKE_RSA_EP_4096 0xa5101f7e
+
+static unsigned long qat_rsa_enc_fn_id(unsigned int len)
+{
+ unsigned int bitslen = len << 3;
+
+ switch (bitslen) {
+ case 512:
+ return PKE_RSA_EP_512;
+ case 1024:
+ return PKE_RSA_EP_1024;
+ case 1536:
+ return PKE_RSA_EP_1536;
+ case 2048:
+ return PKE_RSA_EP_2048;
+ case 3072:
+ return PKE_RSA_EP_3072;
+ case 4096:
+ return PKE_RSA_EP_4096;
+ default:
+ return 0;
+ };
+}
+
+#define PKE_RSA_DP1_512 0x1c161b3c
+#define PKE_RSA_DP1_1024 0x35111c12
+#define PKE_RSA_DP1_1536 0x4d111cf7
+#define PKE_RSA_DP1_2048 0x6e111dda
+#define PKE_RSA_DP1_3072 0x7d111ebe
+#define PKE_RSA_DP1_4096 0xa5101f98
+
+static unsigned long qat_rsa_dec_fn_id(unsigned int len)
+{
+ unsigned int bitslen = len << 3;
+
+ switch (bitslen) {
+ case 512:
+ return PKE_RSA_DP1_512;
+ case 1024:
+ return PKE_RSA_DP1_1024;
+ case 1536:
+ return PKE_RSA_DP1_1536;
+ case 2048:
+ return PKE_RSA_DP1_2048;
+ case 3072:
+ return PKE_RSA_DP1_3072;
+ case 4096:
+ return PKE_RSA_DP1_4096;
+ default:
+ return 0;
+ };
+}
+
+static int qat_rsa_enc(struct akcipher_request *req)
+{
+ struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
+ struct qat_rsa_ctx *ctx = akcipher_tfm_ctx(tfm);
+ struct qat_crypto_instance *inst = ctx->inst;
+ const struct rsa_key *pkey = &ctx->key;
+ struct device *dev = &GET_DEV(inst->accel_dev);
+ struct qat_rsa_request *qat_req =
+ PTR_ALIGN(akcipher_request_ctx(req), 64);
+ struct icp_qat_fw_pke_request *msg = &qat_req->req;
+ int ret, ctr = 0;
+
+ if (ctx->fallback) {
+ akcipher_request_set_tfm(req, ctx->fallback);
+ return crypto_akcipher_encrypt(req);
+ }
+
+ if (unlikely(!pkey->n || !pkey->e))
+ return -EINVAL;
+
+ qat_req->param_sz = ctx->key_sz;
+ if (req->dst_len < qat_req->param_sz) {
+ req->dst_len = qat_req->param_sz;
+ return -EOVERFLOW;
+ }
+ memset(msg, '\0', sizeof(*msg));
+ ICP_QAT_FW_PKE_HDR_VALID_FLAG_SET(msg->pke_hdr,
+ ICP_QAT_FW_COMN_REQ_FLAG_SET);
+ msg->pke_hdr.cd_pars.func_id = qat_rsa_enc_fn_id(qat_req->param_sz);
+ if (unlikely(!msg->pke_hdr.cd_pars.func_id))
+ return -EINVAL;
+
+ qat_req->ctx = ctx;
+ msg->pke_hdr.service_type = ICP_QAT_FW_COMN_REQ_CPM_FW_PKE;
+ msg->pke_hdr.comn_req_flags =
+ ICP_QAT_FW_COMN_FLAGS_BUILD(QAT_COMN_PTR_TYPE_FLAT,
+ QAT_COMN_CD_FLD_TYPE_64BIT_ADR);
+
+ qat_req->in.enc.e = ctx->dma_e;
+ qat_req->in.enc.n = ctx->dma_n;
+ ret = -ENOMEM;
+
+ /*
+ * src can be of any size in valid range, but HW expects it to be the
+ * same as modulo n so in case it is different we need to allocate a
+ * new buf and copy src data.
+ * In other case we just need to map the user provided buffer.
+ */
+ if (req->src_len < ctx->key_sz) {
+ int shift = ctx->key_sz - req->src_len;
+
+ qat_req->src_align = dma_zalloc_coherent(dev, ctx->key_sz,
+ &qat_req->in.enc.m,
+ GFP_KERNEL);
+ if (unlikely(!qat_req->src_align))
+ return ret;
+
+ memcpy(qat_req->src_align + shift, req->src, req->src_len);
+ } else {
+ qat_req->src_align = NULL;
+ qat_req->in.enc.m = dma_map_single(dev, req->src, req->src_len,
+ DMA_TO_DEVICE);
+ }
+ qat_req->in.in_tab[3] = 0;
+ qat_req->out.enc.c = dma_map_single(dev, req->dst, req->dst_len,
+ DMA_FROM_DEVICE);
+ qat_req->out.out_tab[1] = 0;
+ qat_req->phy_in = dma_map_single(dev, &qat_req->in.enc.m,
+ sizeof(struct qat_rsa_input_params),
+ DMA_TO_DEVICE);
+ qat_req->phy_out = dma_map_single(dev, &qat_req->out.enc.c,
+ sizeof(struct qat_rsa_output_params),
+ DMA_TO_DEVICE);
+
+ if (unlikely((!qat_req->src_align &&
+ dma_mapping_error(dev, qat_req->in.enc.m)) ||
+ dma_mapping_error(dev, qat_req->out.enc.c) ||
+ dma_mapping_error(dev, qat_req->phy_in) ||
+ dma_mapping_error(dev, qat_req->phy_out)))
+ goto unmap;
+
+ msg->pke_mid.src_data_addr = qat_req->phy_in;
+ msg->pke_mid.dest_data_addr = qat_req->phy_out;
+ msg->pke_mid.opaque = (uint64_t)(__force long)req;
+ msg->input_param_count = 3;
+ msg->output_param_count = 1;
+ do {
+ ret = adf_send_message(ctx->inst->pke_tx, (uint32_t *)msg);
+ } while (ret == -EBUSY && ctr++ < 100);
+
+ if (!ret)
+ return -EINPROGRESS;
+unmap:
+ if (qat_req->src_align)
+ dma_free_coherent(dev, ctx->key_sz, qat_req->src_align,
+ qat_req->in.enc.m);
+ else
+ if (!dma_mapping_error(dev, qat_req->in.enc.m))
+ dma_unmap_single(dev, qat_req->in.enc.m,
+ qat_req->param_sz,
+ DMA_TO_DEVICE);
+ if (!dma_mapping_error(dev, qat_req->out.enc.c))
+ dma_unmap_single(dev, qat_req->out.enc.c, qat_req->param_sz,
+ DMA_FROM_DEVICE);
+ if (!dma_mapping_error(dev, qat_req->phy_in))
+ dma_unmap_single(dev, qat_req->phy_in,
+ sizeof(struct qat_rsa_input_params),
+ DMA_TO_DEVICE);
+ if (!dma_mapping_error(dev, qat_req->phy_out))
+ dma_unmap_single(dev, qat_req->phy_out,
+ sizeof(struct qat_rsa_output_params),
+ DMA_TO_DEVICE);
+ return ret;
+}
+
+static int qat_rsa_dec(struct akcipher_request *req)
+{
+ struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
+ struct qat_rsa_ctx *ctx = akcipher_tfm_ctx(tfm);
+ struct qat_crypto_instance *inst = ctx->inst;
+ const struct rsa_key *pkey = &ctx->key;
+ struct device *dev = &GET_DEV(inst->accel_dev);
+ struct qat_rsa_request *qat_req =
+ PTR_ALIGN(akcipher_request_ctx(req), 64);
+ struct icp_qat_fw_pke_request *msg = &qat_req->req;
+ int ret, ctr = 0;
+
+ if (ctx->fallback) {
+ akcipher_request_set_tfm(req, ctx->fallback);
+ return crypto_akcipher_decrypt(req);
+ }
+
+ if (unlikely(!pkey->n || !pkey->d))
+ return -EINVAL;
+
+ qat_req->param_sz = ctx->key_sz;
+ if (req->dst_len < qat_req->param_sz) {
+ req->dst_len = qat_req->param_sz;
+ return -EOVERFLOW;
+ }
+ memset(msg, '\0', sizeof(*msg));
+ ICP_QAT_FW_PKE_HDR_VALID_FLAG_SET(msg->pke_hdr,
+ ICP_QAT_FW_COMN_REQ_FLAG_SET);
+ msg->pke_hdr.cd_pars.func_id = qat_rsa_dec_fn_id(qat_req->param_sz);
+ if (unlikely(!msg->pke_hdr.cd_pars.func_id))
+ return -EINVAL;
+
+ qat_req->ctx = ctx;
+ msg->pke_hdr.service_type = ICP_QAT_FW_COMN_REQ_CPM_FW_PKE;
+ msg->pke_hdr.comn_req_flags =
+ ICP_QAT_FW_COMN_FLAGS_BUILD(QAT_COMN_PTR_TYPE_FLAT,
+ QAT_COMN_CD_FLD_TYPE_64BIT_ADR);
+
+ qat_req->in.dec.d = ctx->dma_d;
+ qat_req->in.dec.n = ctx->dma_n;
+ ret = -ENOMEM;
+
+ /*
+ * src can be of any size in valid range, but HW expects it to be the
+ * same as modulo n so in case it is different we need to allocate a
+ * new buf and copy src data.
+ * In other case we just need to map the user provided buffer.
+ */
+ if (req->src_len < ctx->key_sz) {
+ int shift = ctx->key_sz - req->src_len;
+
+ qat_req->src_align = dma_zalloc_coherent(dev, ctx->key_sz,
+ &qat_req->in.dec.c,
+ GFP_KERNEL);
+ if (unlikely(!qat_req->src_align))
+ return ret;
+
+ memcpy(qat_req->src_align + shift, req->src, req->src_len);
+ } else {
+ qat_req->src_align = NULL;
+ qat_req->in.dec.c = dma_map_single(dev, req->src, req->src_len,
+ DMA_TO_DEVICE);
+ }
+ qat_req->in.in_tab[3] = 0;
+ qat_req->out.dec.m = dma_map_single(dev, req->dst, req->dst_len,
+ DMA_FROM_DEVICE);
+ qat_req->out.out_tab[1] = 0;
+ qat_req->phy_in = dma_map_single(dev, &qat_req->in.dec.c,
+ sizeof(struct qat_rsa_input_params),
+ DMA_TO_DEVICE);
+ qat_req->phy_out = dma_map_single(dev, &qat_req->out.dec.m,
+ sizeof(struct qat_rsa_output_params),
+ DMA_TO_DEVICE);
+
+ if (unlikely((!qat_req->src_align &&
+ dma_mapping_error(dev, qat_req->in.dec.c)) ||
+ dma_mapping_error(dev, qat_req->out.dec.m) ||
+ dma_mapping_error(dev, qat_req->phy_in) ||
+ dma_mapping_error(dev, qat_req->phy_out)))
+ goto unmap;
+
+ msg->pke_mid.src_data_addr = qat_req->phy_in;
+ msg->pke_mid.dest_data_addr = qat_req->phy_out;
+ msg->pke_mid.opaque = (uint64_t)(__force long)req;
+ msg->input_param_count = 3;
+ msg->output_param_count = 1;
+ do {
+ ret = adf_send_message(ctx->inst->pke_tx, (uint32_t *)msg);
+ } while (ret == -EBUSY && ctr++ < 100);
+
+ if (!ret)
+ return -EINPROGRESS;
+unmap:
+ if (qat_req->src_align)
+ dma_free_coherent(dev, ctx->key_sz, qat_req->src_align,
+ qat_req->in.dec.c);
+ else
+ if (!dma_mapping_error(dev, qat_req->in.dec.c))
+ dma_unmap_single(dev, qat_req->in.dec.c,
+ qat_req->param_sz,
+ DMA_TO_DEVICE);
+ if (!dma_mapping_error(dev, qat_req->out.dec.m))
+ dma_unmap_single(dev, qat_req->out.dec.m, qat_req->param_sz,
+ DMA_FROM_DEVICE);
+ if (!dma_mapping_error(dev, qat_req->phy_in))
+ dma_unmap_single(dev, qat_req->phy_in,
+ sizeof(struct qat_rsa_input_params),
+ DMA_TO_DEVICE);
+ if (!dma_mapping_error(dev, qat_req->phy_out))
+ dma_unmap_single(dev, qat_req->phy_out,
+ sizeof(struct qat_rsa_output_params),
+ DMA_TO_DEVICE);
+ return ret;
+}
+
+static int qat_rsa_setkey(struct crypto_akcipher *tfm, const void *key,
+ unsigned int keylen)
+{
+ struct qat_rsa_ctx *ctx = akcipher_tfm_ctx(tfm);
+ struct device *dev = &GET_DEV(ctx->inst->accel_dev);
+ struct rsa_key *pkey = &ctx->key;
+ int ret, len, shift;
+
+ /* Free the old key if any */
+ if (ctx->key_sz) {
+ if (ctx->n)
+ dma_free_coherent(dev, ctx->key_sz, ctx->n, ctx->dma_n);
+ if (ctx->e)
+ dma_free_coherent(dev, ctx->key_sz, ctx->e, ctx->dma_e);
+ if (ctx->d) {
+ memset(ctx->d, '\0', ctx->key_sz);
+ dma_free_coherent(dev, ctx->key_sz, ctx->d, ctx->dma_d);
+ }
+ } else if (ctx->fallback) {
+ crypto_free_akcipher(ctx->fallback);
+ }
+
+ ret = rsa_parse_key(pkey, key, keylen);
+ if (ret)
+ return ret;
+
+ if (!pkey->n || !pkey->e) {
+ /* invalid key provided */
+ rsa_free_key(pkey);
+ return -EINVAL;
+ }
+
+ ctx->key_sz = mpi_get_size(pkey->n);
+ if (!qat_rsa_enc_fn_id(ctx->key_sz)) {
+ /* invalid key size provided falling back to sw */
+ rsa_free_key(pkey);
+ ctx->key_sz = 0;
+ ctx->n = NULL;
+ ctx->e = NULL;
+ ctx->d = NULL;
+
+ pr_info("QAT: RSA key size not supported by hardware.\n");
+ pr_info("Falling back to software");
+ ctx->fallback = crypto_alloc_akcipher("rsa-generic", 0, 0);
+
+ if (!ctx->fallback)
+ return -ENOMEM;
+
+ return crypto_akcipher_setkey(ctx->fallback, (void *)key,
+ keylen);
+ }
+
+ ctx->fallback = NULL;
+ ret = -ENOMEM;
+ ctx->n = dma_zalloc_coherent(dev, ctx->key_sz, &ctx->dma_n,
+ GFP_KERNEL);
+ if (!ctx->n)
+ return ret;
+
+ ctx->e = dma_zalloc_coherent(dev, ctx->key_sz, &ctx->dma_e, GFP_KERNEL);
+ if (!ctx->e)
+ goto free_n;
+
+ if (pkey->d) {
+ ctx->d = dma_zalloc_coherent(dev, ctx->key_sz, &ctx->dma_d,
+ GFP_KERNEL);
+ if (!ctx->d)
+ goto free_e;
+ }
+
+ ret = mpi_read_buffer(pkey->n, ctx->n, ctx->key_sz, &len, NULL);
+ if (ret)
+ goto free_d;
+
+ shift = ctx->key_sz - mpi_get_size(pkey->e);
+ ret = mpi_read_buffer(pkey->e, ctx->e + shift, ctx->key_sz - shift,
+ &len, NULL);
+ if (ret)
+ goto free_d;
+
+ if (pkey->d) {
+ shift = ctx->key_sz - mpi_get_size(pkey->d);
+ ret = mpi_read_buffer(pkey->d, ctx->d + shift, ctx->key_sz -
+ shift, &len, NULL);
+ if (ret)
+ goto free_d;
+ }
+ return 0;
+free_d:
+ memset(ctx->d, '\0', ctx->key_sz);
+ dma_free_coherent(dev, ctx->key_sz, ctx->d, ctx->dma_d);
+ ctx->d = NULL;
+free_e:
+ dma_free_coherent(dev, ctx->key_sz, ctx->e, ctx->dma_e);
+ ctx->e = NULL;
+free_n:
+ dma_free_coherent(dev, ctx->key_sz, ctx->n, ctx->dma_n);
+ ctx->n = NULL;
+ ctx->key_sz = 0;
+ return ret;
+}
+
+static int qat_rsa_init_tfm(struct crypto_akcipher *tfm)
+{
+ struct qat_rsa_ctx *ctx = akcipher_tfm_ctx(tfm);
+ struct qat_crypto_instance *inst =
+ qat_crypto_get_instance_node(get_current_node());
+
+ if (!inst)
+ return -EINVAL;
+
+ ctx->key_sz = 0;
+ ctx->inst = inst;
+ return 0;
+}
+
+static void qat_rsa_exit_tfm(struct crypto_akcipher *tfm)
+{
+ struct qat_rsa_ctx *ctx = akcipher_tfm_ctx(tfm);
+ struct device *dev = &GET_DEV(ctx->inst->accel_dev);
+ struct rsa_key *pkey = &ctx->key;
+
+ if (ctx->fallback) {
+ crypto_free_akcipher(ctx->fallback);
+ } else {
+ if (ctx->n)
+ dma_free_coherent(dev, ctx->key_sz, ctx->n, ctx->dma_n);
+ if (ctx->e)
+ dma_free_coherent(dev, ctx->key_sz, ctx->e, ctx->dma_e);
+ if (pkey->d) {
+ memset(ctx->d, '\0', ctx->key_sz);
+ dma_free_coherent(dev, ctx->key_sz, ctx->d, ctx->dma_d);
+ }
+ }
+ qat_crypto_put_instance(ctx->inst);
+ ctx->n = NULL;
+ ctx->d = NULL;
+ ctx->d = NULL;
+ rsa_free_key(pkey);
+}
+
+static struct akcipher_alg rsa = {
+ .encrypt = qat_rsa_enc,
+ .decrypt = qat_rsa_dec,
+ .sign = qat_rsa_dec,
+ .verify = qat_rsa_enc,
+ .setkey = qat_rsa_setkey,
+ .init = qat_rsa_init_tfm,
+ .exit = qat_rsa_exit_tfm,
+ .reqsize = sizeof(struct qat_rsa_request),
+ .base = {
+ .cra_name = "rsa",
+ .cra_driver_name = "qat-rsa",
+ .cra_priority = 1000,
+ .cra_module = THIS_MODULE,
+ .cra_ctxsize = sizeof(struct qat_rsa_ctx),
+ },
+};
+
+int qat_asym_algs_register(void)
+{
+ rsa.base.cra_flags = 0;
+ return crypto_register_akcipher(&rsa);
+}
+
+void qat_asym_algs_unregister(void)
+{
+ crypto_unregister_akcipher(&rsa);
+}
diff --git a/drivers/crypto/qat/qat_common/qat_crypto.c b/drivers/crypto/qat/qat_common/qat_crypto.c
index 3bd705c..e23ce6f 100644
--- a/drivers/crypto/qat/qat_common/qat_crypto.c
+++ b/drivers/crypto/qat/qat_common/qat_crypto.c
@@ -88,12 +88,6 @@ static int qat_crypto_free_instances(struct adf_accel_dev *accel_dev)
if (inst->pke_rx)
adf_remove_ring(inst->pke_rx);
- if (inst->rnd_tx)
- adf_remove_ring(inst->rnd_tx);
-
- if (inst->rnd_rx)
- adf_remove_ring(inst->rnd_rx);
-
list_del(list_ptr);
kfree(inst);
}
@@ -202,11 +196,6 @@ static int qat_crypto_create_instances(struct adf_accel_dev *accel_dev)
msg_size, key, NULL, 0, &inst->sym_tx))
goto err;
- snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_RND_TX, i);
- if (adf_create_ring(accel_dev, SEC, bank, num_msg_asym,
- msg_size, key, NULL, 0, &inst->rnd_tx))
- goto err;
-
msg_size = msg_size >> 1;
snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_TX, i);
if (adf_create_ring(accel_dev, SEC, bank, num_msg_asym,
@@ -220,15 +209,9 @@ static int qat_crypto_create_instances(struct adf_accel_dev *accel_dev)
&inst->sym_rx))
goto err;
- snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_RND_RX, i);
- if (adf_create_ring(accel_dev, SEC, bank, num_msg_asym,
- msg_size, key, qat_alg_callback, 0,
- &inst->rnd_rx))
- goto err;
-
snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_RX, i);
if (adf_create_ring(accel_dev, SEC, bank, num_msg_asym,
- msg_size, key, qat_alg_callback, 0,
+ msg_size, key, qat_alg_asym_callback, 0,
&inst->pke_rx))
goto err;
}
diff --git a/drivers/crypto/qat/qat_common/qat_crypto.h b/drivers/crypto/qat/qat_common/qat_crypto.h
index d503007..dc0273f 100644
--- a/drivers/crypto/qat/qat_common/qat_crypto.h
+++ b/drivers/crypto/qat/qat_common/qat_crypto.h
@@ -57,8 +57,6 @@ struct qat_crypto_instance {
struct adf_etr_ring_data *sym_rx;
struct adf_etr_ring_data *pke_tx;
struct adf_etr_ring_data *pke_rx;
- struct adf_etr_ring_data *rnd_tx;
- struct adf_etr_ring_data *rnd_rx;
struct adf_accel_dev *accel_dev;
struct list_head list;
unsigned long state;
diff --git a/drivers/crypto/qat/qat_dh895xcc/adf_drv.c b/drivers/crypto/qat/qat_dh895xcc/adf_drv.c
index 1bde45b..d241037 100644
--- a/drivers/crypto/qat/qat_dh895xcc/adf_drv.c
+++ b/drivers/crypto/qat/qat_dh895xcc/adf_drv.c
@@ -167,12 +167,6 @@ static int adf_dev_configure(struct adf_accel_dev *accel_dev)
key, (void *)&val, ADF_DEC))
goto err;
- val = 4;
- snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_RND_TX, i);
- if (adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
- key, (void *)&val, ADF_DEC))
- goto err;
-
val = 8;
snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_RX, i);
if (adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
@@ -185,12 +179,6 @@ static int adf_dev_configure(struct adf_accel_dev *accel_dev)
key, (void *)&val, ADF_DEC))
goto err;
- val = 12;
- snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_RND_RX, i);
- if (adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
- key, (void *)&val, ADF_DEC))
- goto err;
-
val = ADF_COALESCING_DEF_TIME;
snprintf(key, sizeof(key), ADF_ETRMGR_COALESCE_TIMER_FORMAT, i);
if (adf_cfg_add_key_value_param(accel_dev, "Accelerator0",
^ permalink raw reply related [flat|nested] 10+ messages in thread