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crypto: hisilicon/sec2 - add debugfs for Hisilicon SEC

Browse Source 
Hisilicon SEC engine driver uses debugfs
to provides IO operation debug information

Signed-off-by: Kai Ye <yekai13@huawei.com>
Signed-off-by: Longfang Liu <liulongfang@huawei.com>
Signed-off-by: Shukun Tan <tanshukun1@huawei.com>
Reviewed-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Kai Ye 2020-05-15 17:13:56 +08:00 committed by Herbert Xu
parent 0a3a396021
commit 8213a1a60c
4 changed files with 95 additions and 21 deletions
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54
Documentation/ABI/testing/debugfs-hisi-sec
View File

@ -1,10 +1,4 @@
What: /sys/kernel/debug/hisi_sec/<bdf>/sec_dfx
Date: Oct 2019
Contact: linux-crypto@vger.kernel.org
Description: Dump the debug registers of SEC cores.
Only available for PF.
What: /sys/kernel/debug/hisi_sec/<bdf>/clear_enable
What: /sys/kernel/debug/hisi_sec2/<bdf>/clear_enable
Date: Oct 2019
Contact: linux-crypto@vger.kernel.org
Description: Enabling/disabling of clear action after reading
@ -12,7 +6,7 @@ Description: Enabling/disabling of clear action after reading
0: disable, 1: enable.
Only available for PF, and take no other effect on SEC.
What: /sys/kernel/debug/hisi_sec/<bdf>/current_qm
What: /sys/kernel/debug/hisi_sec2/<bdf>/current_qm
Date: Oct 2019
Contact: linux-crypto@vger.kernel.org
Description: One SEC controller has one PF and multiple VFs, each function
@ -20,21 +14,21 @@ Description: One SEC controller has one PF and multiple VFs, each function
qm refers to.
Only available for PF.
What: /sys/kernel/debug/hisi_sec/<bdf>/qm/qm_regs
What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/qm_regs
Date: Oct 2019
Contact: linux-crypto@vger.kernel.org
Description: Dump of QM related debug registers.
Available for PF and VF in host. VF in guest currently only
has one debug register.
What: /sys/kernel/debug/hisi_sec/<bdf>/qm/current_q
What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/current_q
Date: Oct 2019
Contact: linux-crypto@vger.kernel.org
Description: One QM of SEC may contain multiple queues. Select specific
queue to show its debug registers in above 'qm_regs'.
Only available for PF.
What: /sys/kernel/debug/hisi_sec/<bdf>/qm/clear_enable
What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/clear_enable
Date: Oct 2019
Contact: linux-crypto@vger.kernel.org
Description: Enabling/disabling of clear action after reading
@ -79,3 +73,41 @@ Contact: linux-crypto@vger.kernel.org
Description: Dump the status of the QM.
Four states: initiated, started, stopped and closed.
Available for both PF and VF, and take no other effect on SEC.
What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/send_cnt
Date: Apr 2020
Contact: linux-crypto@vger.kernel.org
Description: Dump the total number of sent requests.
Available for both PF and VF, and take no other effect on SEC.
What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/recv_cnt
Date: Apr 2020
Contact: linux-crypto@vger.kernel.org
Description: Dump the total number of received requests.
Available for both PF and VF, and take no other effect on SEC.
What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/send_busy_cnt
Date: Apr 2020
Contact: linux-crypto@vger.kernel.org
Description: Dump the total number of requests sent with returning busy.
Available for both PF and VF, and take no other effect on SEC.
What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/err_bd_cnt
Date: Apr 2020
Contact: linux-crypto@vger.kernel.org
Description: Dump the total number of BD type error requests
to be received.
Available for both PF and VF, and take no other effect on SEC.
What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/invalid_req_cnt
Date: Apr 2020
Contact: linux-crypto@vger.kernel.org
Description: Dump the total number of invalid requests being received.
Available for both PF and VF, and take no other effect on SEC.
What: /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/done_flag_cnt
Date: Apr 2020
Contact: linux-crypto@vger.kernel.org
Description: Dump the total number of completed but marked error requests
to be received.
Available for both PF and VF, and take no other effect on SEC.

4
drivers/crypto/hisilicon/sec2/sec.h
View File

@ -160,6 +160,10 @@ struct sec_debug_file {
struct sec_dfx {
atomic64_t send_cnt;
atomic64_t recv_cnt;
atomic64_t send_busy_cnt;
atomic64_t err_bd_cnt;
atomic64_t invalid_req_cnt;
atomic64_t done_flag_cnt;
};
struct sec_debug {

15
drivers/crypto/hisilicon/sec2/sec_crypto.c
View File

@ -148,6 +148,7 @@ static int sec_aead_verify(struct sec_req *req)
static void sec_req_cb(struct hisi_qp *qp, void *resp)
{
struct sec_qp_ctx *qp_ctx = qp->qp_ctx;
struct sec_dfx *dfx = &qp_ctx->ctx->sec->debug.dfx;
struct sec_sqe *bd = resp;
struct sec_ctx *ctx;
struct sec_req *req;
@ -157,11 +158,16 @@ static void sec_req_cb(struct hisi_qp *qp, void *resp)
type = bd->type_cipher_auth & SEC_TYPE_MASK;
if (unlikely(type != SEC_BD_TYPE2)) {
atomic64_inc(&dfx->err_bd_cnt);
pr_err("err bd type [%d]\n", type);
return;
}
req = qp_ctx->req_list[le16_to_cpu(bd->type2.tag)];
if (unlikely(!req)) {
atomic64_inc(&dfx->invalid_req_cnt);
return;
}
req->err_type = bd->type2.error_type;
ctx = req->ctx;
done = le16_to_cpu(bd->type2.done_flag) & SEC_DONE_MASK;
@ -174,12 +180,13 @@ static void sec_req_cb(struct hisi_qp *qp, void *resp)
"err_type[%d],done[%d],flag[%d]\n",
req->err_type, done, flag);
err = -EIO;
atomic64_inc(&dfx->done_flag_cnt);
}
if (ctx->alg_type == SEC_AEAD && !req->c_req.encrypt)
err = sec_aead_verify(req);
atomic64_inc(&ctx->sec->debug.dfx.recv_cnt);
atomic64_inc(&dfx->recv_cnt);
ctx->req_op->buf_unmap(ctx, req);
@ -200,10 +207,12 @@ static int sec_bd_send(struct sec_ctx *ctx, struct sec_req *req)
return -ENOBUFS;
if (!ret) {
if (req->fake_busy)
if (req->fake_busy) {
atomic64_inc(&ctx->sec->debug.dfx.send_busy_cnt);
ret = -EBUSY;
else
} else {
ret = -EINPROGRESS;
}
}
return ret;

43
drivers/crypto/hisilicon/sec2/sec_main.c
View File

@ -88,6 +88,11 @@ struct sec_hw_error {
const char *msg;
};
struct sec_dfx_item {
const char *name;
u32 offset;
};
static const char sec_name[] = "hisi_sec2";
static struct dentry *sec_debugfs_root;
static struct hisi_qm_list sec_devices;
@ -110,6 +115,15 @@ static const char * const sec_dbg_file_name[] = {
[SEC_CLEAR_ENABLE] = "clear_enable",
};
static struct sec_dfx_item sec_dfx_labels[] = {
{"send_cnt", offsetof(struct sec_dfx, send_cnt)},
{"recv_cnt", offsetof(struct sec_dfx, recv_cnt)},
{"send_busy_cnt", offsetof(struct sec_dfx, send_busy_cnt)},
{"err_bd_cnt", offsetof(struct sec_dfx, err_bd_cnt)},
{"invalid_req_cnt", offsetof(struct sec_dfx, invalid_req_cnt)},
{"done_flag_cnt", offsetof(struct sec_dfx, done_flag_cnt)},
};
static const struct debugfs_reg32 sec_dfx_regs[] = {
{"SEC_PF_ABNORMAL_INT_SOURCE ", 0x301010},
{"SEC_SAA_EN ", 0x301270},
@ -543,10 +557,22 @@ static const struct file_operations sec_dbg_fops = {
static int sec_debugfs_atomic64_get(void *data, u64 *val)
{
*val = atomic64_read((atomic64_t *)data);
return 0;
}
static int sec_debugfs_atomic64_set(void *data, u64 val)
{
if (val)
return -EINVAL;
atomic64_set((atomic64_t *)data, 0);
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(sec_atomic64_ops, sec_debugfs_atomic64_get,
NULL, "%lld\n");
sec_debugfs_atomic64_set, "%lld\n");
static int sec_core_debug_init(struct sec_dev *sec)
{
@ -555,6 +581,7 @@ static int sec_core_debug_init(struct sec_dev *sec)
struct sec_dfx *dfx = &sec->debug.dfx;
struct debugfs_regset32 *regset;
struct dentry *tmp_d;
int i;
tmp_d = debugfs_create_dir("sec_dfx", sec->qm.debug.debug_root);
@ -566,13 +593,15 @@ static int sec_core_debug_init(struct sec_dev *sec)
regset->nregs = ARRAY_SIZE(sec_dfx_regs);
regset->base = qm->io_base;
debugfs_create_regset32("regs", 0444, tmp_d, regset);
if (qm->pdev->device == SEC_PF_PCI_DEVICE_ID)
debugfs_create_regset32("regs", 0444, tmp_d, regset);
debugfs_create_file("send_cnt", 0444, tmp_d,
&dfx->send_cnt, &sec_atomic64_ops);
debugfs_create_file("recv_cnt", 0444, tmp_d,
&dfx->recv_cnt, &sec_atomic64_ops);
for (i = 0; i < ARRAY_SIZE(sec_dfx_labels); i++) {
atomic64_t *data = (atomic64_t *)((uintptr_t)dfx +
sec_dfx_labels[i].offset);
debugfs_create_file(sec_dfx_labels[i].name, 0644,
tmp_d, data, &sec_atomic64_ops);
}
return 0;
}