Commit 85026525 authored by Longfang Liu's avatar Longfang Liu Committed by Herbert Xu
Browse files

crypto: hisilicon/qm - add debugfs for QM 



Add DebugFS method to get the information of IRQ/Requests/QP .etc of QM
for HPRE/ZIP/SEC drivers.

Signed-off-by: default avatarLongfang Liu <liulongfang@huawei.com>
Signed-off-by: default avatarShukun Tan <tanshukun1@huawei.com>
Reviewed-by: default avatarZaibo Xu <xuzaibo@huawei.com>
Reviewed-by: default avatarZhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 7795c0ba

Documentation/ABI/testing/debugfs-hisi-hpre

+31 −0
Original line number Diff line number Diff line
@@ -55,3 +55,34 @@ Description: QM debug registers(qm_regs) read clear control. 1 means enable 
		Writing to this file has no functional effect, only enable or

		disable counters clear after reading of these registers.

		Only available for PF.



What:           /sys/kernel/debug/hisi_hpre/<bdf>/qm/err_irq

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

Description:    Dump the number of invalid interrupts for

		QM task completion.

		Available for both PF and VF, and take no other effect on HPRE.



What:           /sys/kernel/debug/hisi_hpre/<bdf>/qm/aeq_irq

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

Description:    Dump the number of QM async event queue interrupts.

		Available for both PF and VF, and take no other effect on HPRE.



What:           /sys/kernel/debug/hisi_hpre/<bdf>/qm/abnormal_irq

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

Description:    Dump the number of interrupts for QM abnormal event.

		Available for both PF and VF, and take no other effect on HPRE.



What:           /sys/kernel/debug/hisi_hpre/<bdf>/qm/create_qp_err

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

Description:    Dump the number of queue allocation errors.

		Available for both PF and VF, and take no other effect on HPRE.



What:           /sys/kernel/debug/hisi_hpre/<bdf>/qm/mb_err

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

Description:    Dump the number of failed QM mailbox commands.

		Available for both PF and VF, and take no other effect on HPRE.

Documentation/ABI/testing/debugfs-hisi-sec

+31 −0
Original line number Diff line number Diff line
@@ -41,3 +41,34 @@ Description: Enabling/disabling of clear action after reading 
		the SEC's QM debug registers.

		0: disable, 1: enable.

		Only available for PF, and take no other effect on SEC.



What:           /sys/kernel/debug/hisi_sec2/<bdf>/qm/err_irq

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

Description:    Dump the number of invalid interrupts for

		QM task completion.

		Available for both PF and VF, and take no other effect on SEC.



What:           /sys/kernel/debug/hisi_sec2/<bdf>/qm/aeq_irq

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

Description:    Dump the number of QM async event queue interrupts.

		Available for both PF and VF, and take no other effect on SEC.



What:           /sys/kernel/debug/hisi_sec2/<bdf>/qm/abnormal_irq

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

Description:    Dump the number of interrupts for QM abnormal event.

		Available for both PF and VF, and take no other effect on SEC.



What:           /sys/kernel/debug/hisi_sec2/<bdf>/qm/create_qp_err

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

Description:    Dump the number of queue allocation errors.

		Available for both PF and VF, and take no other effect on SEC.



What:           /sys/kernel/debug/hisi_sec2/<bdf>/qm/mb_err

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

Description:    Dump the number of failed QM mailbox commands.

		Available for both PF and VF, and take no other effect on SEC.

Documentation/ABI/testing/debugfs-hisi-zip

+31 −0
Original line number Diff line number Diff line
@@ -48,3 +48,34 @@ Description: QM debug registers(qm_regs) read clear control. 1 means enable 
		Writing to this file has no functional effect, only enable or

		disable counters clear after reading of these registers.

		Only available for PF.



What:           /sys/kernel/debug/hisi_zip/<bdf>/qm/err_irq

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

Description:    Dump the number of invalid interrupts for

		QM task completion.

		Available for both PF and VF, and take no other effect on ZIP.



What:           /sys/kernel/debug/hisi_zip/<bdf>/qm/aeq_irq

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

Description:    Dump the number of QM async event queue interrupts.

		Available for both PF and VF, and take no other effect on ZIP.



What:           /sys/kernel/debug/hisi_zip/<bdf>/qm/abnormal_irq

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

Description:    Dump the number of interrupts for QM abnormal event.

		Available for both PF and VF, and take no other effect on ZIP.



What:           /sys/kernel/debug/hisi_zip/<bdf>/qm/create_qp_err

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

Description:    Dump the number of queue allocation errors.

		Available for both PF and VF, and take no other effect on ZIP.



What:           /sys/kernel/debug/hisi_zip/<bdf>/qm/mb_err

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

Description:    Dump the number of failed QM mailbox commands.

		Available for both PF and VF, and take no other effect on ZIP.

drivers/crypto/hisilicon/qm.c

+51 −0
Original line number Diff line number Diff line
@@ -324,6 +324,19 @@ struct hisi_qm_hw_ops { 
	enum acc_err_result (*hw_error_handle)(struct hisi_qm *qm);

};



struct qm_dfx_item {

	const char *name;

	u32 offset;

};



static struct qm_dfx_item qm_dfx_files[] = {

	{"err_irq", offsetof(struct qm_dfx, err_irq_cnt)},

	{"aeq_irq", offsetof(struct qm_dfx, aeq_irq_cnt)},

	{"abnormal_irq", offsetof(struct qm_dfx, abnormal_irq_cnt)},

	{"create_qp_err", offsetof(struct qm_dfx, create_qp_err_cnt)},

	{"mb_err", offsetof(struct qm_dfx, mb_err_cnt)},

};



static const char * const qm_debug_file_name[] = {

	[CURRENT_Q]    = "current_q",

	[CLEAR_ENABLE] = "clear_enable",
@@ -514,6 +527,8 @@ static int qm_mb(struct hisi_qm *qm, u8 cmd, dma_addr_t dma_addr, u16 queue, 
busy_unlock:

	mutex_unlock(&qm->mailbox_lock);



	if (ret)

		atomic64_inc(&qm->debug.dfx.mb_err_cnt);

	return ret;

}
@@ -671,6 +686,7 @@ static irqreturn_t qm_irq(int irq, void *data) 
	if (readl(qm->io_base + QM_VF_EQ_INT_SOURCE))

		return do_qm_irq(irq, data);



	atomic64_inc(&qm->debug.dfx.err_irq_cnt);

	dev_err(&qm->pdev->dev, "invalid int source\n");

	qm_db(qm, 0, QM_DOORBELL_CMD_EQ, qm->status.eq_head, 0);
@@ -683,6 +699,7 @@ static irqreturn_t qm_aeq_irq(int irq, void *data) 
	struct qm_aeqe *aeqe = qm->aeqe + qm->status.aeq_head;

	u32 type;



	atomic64_inc(&qm->debug.dfx.aeq_irq_cnt);

	if (!readl(qm->io_base + QM_VF_AEQ_INT_SOURCE))

		return IRQ_NONE;
@@ -1192,6 +1209,7 @@ static struct hisi_qp *qm_create_qp_nolock(struct hisi_qm *qm, u8 alg_type) 
	if (qm->qp_in_used == qm->qp_num) {

		dev_info_ratelimited(dev, "All %u queues of QM are busy!\n",

				     qm->qp_num);

		atomic64_inc(&qm->debug.dfx.create_qp_err_cnt);

		return ERR_PTR(-EBUSY);

	}
@@ -1199,6 +1217,7 @@ static struct hisi_qp *qm_create_qp_nolock(struct hisi_qm *qm, u8 alg_type) 
	if (qp_id < 0) {

		dev_info_ratelimited(dev, "All %u queues of QM are busy!\n",

				    qm->qp_num);

		atomic64_inc(&qm->debug.dfx.create_qp_err_cnt);

		return ERR_PTR(-EBUSY);

	}
@@ -2249,6 +2268,26 @@ err_unlock: 
}

EXPORT_SYMBOL_GPL(hisi_qm_stop);



static int qm_debugfs_atomic64_set(void *data, u64 val)

{

	if (val)

		return -EINVAL;



	atomic64_set((atomic64_t *)data, 0);



	return 0;

}



static int qm_debugfs_atomic64_get(void *data, u64 *val)

{

	*val = atomic64_read((atomic64_t *)data);



	return 0;

}



DEFINE_DEBUGFS_ATTRIBUTE(qm_atomic64_ops, qm_debugfs_atomic64_get,

			 qm_debugfs_atomic64_set, "%llu\n");



/**

 * hisi_qm_debug_init() - Initialize qm related debugfs files.

 * @qm: The qm for which we want to add debugfs files.
@@ -2257,7 +2296,9 @@ EXPORT_SYMBOL_GPL(hisi_qm_stop); 
 */

int hisi_qm_debug_init(struct hisi_qm *qm)

{

	struct qm_dfx *dfx = &qm->debug.dfx;

	struct dentry *qm_d;

	void *data;

	int i, ret;



	qm_d = debugfs_create_dir("qm", qm->debug.debug_root);
@@ -2273,6 +2314,15 @@ int hisi_qm_debug_init(struct hisi_qm *qm) 


	debugfs_create_file("qm_regs", 0444, qm->debug.qm_d, qm, &qm_regs_fops);



	for (i = 0; i < ARRAY_SIZE(qm_dfx_files); i++) {

		data = (atomic64_t *)((uintptr_t)dfx + qm_dfx_files[i].offset);

		debugfs_create_file(qm_dfx_files[i].name,

			0644,

			qm_d,

			data,

			&qm_atomic64_ops);

	}



	return 0;



failed_to_create:
@@ -3311,6 +3361,7 @@ static irqreturn_t qm_abnormal_irq(int irq, void *data) 
	struct hisi_qm *qm = data;

	enum acc_err_result ret;



	atomic64_inc(&qm->debug.dfx.abnormal_irq_cnt);

	ret = qm_process_dev_error(qm);

	if (ret == ACC_ERR_NEED_RESET)

		schedule_work(&qm->rst_work);

drivers/crypto/hisilicon/qm.h

+9 −0
Original line number Diff line number Diff line
@@ -121,6 +121,14 @@ enum qm_debug_file { 
	DEBUG_FILE_NUM,

};



struct qm_dfx {

	atomic64_t err_irq_cnt;

	atomic64_t aeq_irq_cnt;

	atomic64_t abnormal_irq_cnt;

	atomic64_t create_qp_err_cnt;

	atomic64_t mb_err_cnt;

};



struct debugfs_file {

	enum qm_debug_file index;

	struct mutex lock;
@@ -129,6 +137,7 @@ struct debugfs_file { 


struct qm_debug {

	u32 curr_qm_qp_num;

	struct qm_dfx dfx;

	struct dentry *debug_root;

	struct dentry *qm_d;

	struct debugfs_file files[DEBUG_FILE_NUM];

CRA Git | Maintained and supported by SUSTech CRA and CCSE