Commit 8f14e4c3 authored by Weibo Zhao's avatar Weibo Zhao Committed by JiangShui
Browse files

hns3 udma: support of modify jfc 

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I85R2F


CVE: NA

-------------------------------------------------------

This patch add support of modify jfc. This function
can modify the aggregation conditions for reporting
events. Event can be reported if number reaching
MODERATE_COUNT or time reaching MODERATE_PERIOD.

Signed-off-by: default avatarWeibo Zhao <zhaoweibo3@huawei.com>
parent f6d3d881

drivers/ub/hw/hns3/hns3_udma_jfc.c

+61 −0
Original line number Diff line number Diff line
@@ -531,3 +531,64 @@ int udma_destroy_jfc(struct ubcore_jfc *jfc) 


	return 0;

}



int udma_modify_jfc(struct ubcore_jfc *ubcore_jfc, const struct ubcore_jfc_attr *attr,

		    struct ubcore_udata *udata)

{

	struct udma_dev *udma_device = to_udma_dev(ubcore_jfc->ub_dev);

	uint16_t cq_period = attr->moderate_period;

	uint16_t cq_count = attr->moderate_count;

	struct udma_jfc_context *jfc_context;

	struct udma_jfc_context *cqc_mask;

	struct udma_cmd_mailbox *mailbox;

	struct udma_cmq_desc desc;

	struct udma_jfc *udma_jfc;

	struct udma_mbox *mb;

	int ret;



	udma_jfc = to_udma_jfc(ubcore_jfc);

	ret = check_jfc_cfg(udma_device, &ubcore_jfc->jfc_cfg);

	if (ret)

		return ret;



	if (!(attr->mask & (UBCORE_JFC_MODERATE_COUNT |

			    UBCORE_JFC_MODERATE_PERIOD))) {

		dev_err(udma_device->dev,

			"JFC modify mask is not set or invalid.\n");

		return -EINVAL;

	}



	mailbox = udma_alloc_cmd_mailbox(udma_device);

	if (IS_ERR(mailbox)) {

		dev_err(udma_device->dev, "failed to alloc mailbox for CQ.\n");

		return -ENOMEM;

	}



	jfc_context = (struct udma_jfc_context *)mailbox->buf;

	cqc_mask = (struct udma_jfc_context *)mailbox->buf + 1;



	memset(cqc_mask, 0xff, sizeof(*cqc_mask));

	if (attr->mask & UBCORE_JFC_MODERATE_COUNT) {

		udma_reg_write(jfc_context, CQC_CQ_MAX_CNT, cq_count);

		udma_reg_clear(cqc_mask, CQC_CQ_MAX_CNT);

	}



	if (attr->mask & UBCORE_JFC_MODERATE_PERIOD) {

		udma_reg_write(jfc_context, CQC_CQ_PERIOD, cq_period);

		udma_reg_clear(cqc_mask, CQC_CQ_PERIOD);

	}



	mb = (struct udma_mbox *)desc.data;

	udma_cmq_setup_basic_desc(&desc, UDMA_OPC_POST_MB, false);

	mbox_desc_init(mb, mailbox->dma, 0, ubcore_jfc->id,

		       UDMA_CMD_MODIFY_CQC);



	ret = udma_cmd_mbox(udma_device, &desc, UDMA_CMD_TIMEOUT_MSECS, 0);

	if (ret)

		dev_err(udma_device->dev,

			"failed to send modify cmd for jfc(0x%x), ret = %d.\n",

			ubcore_jfc->id, ret);

	udma_free_cmd_mailbox(udma_device, mailbox);



	return ret;

}

drivers/ub/hw/hns3/hns3_udma_jfc.h

+2 −0
Original line number Diff line number Diff line
@@ -70,6 +70,8 @@ static inline struct udma_jfc *to_udma_jfc(struct ubcore_jfc *jfc) 
struct ubcore_jfc *udma_create_jfc(struct ubcore_device *dev, const struct ubcore_jfc_cfg *cfg,

			      struct ubcore_udata *udata);

int udma_destroy_jfc(struct ubcore_jfc *jfc);

int udma_modify_jfc(struct ubcore_jfc *ubcore_jfc, const struct ubcore_jfc_attr *attr,

		    struct ubcore_udata *udata);

static inline uint8_t get_jfc_bankid(uint64_t cqn)

{

	/* The lower 2 bits of CQN are used to hash to different banks */

drivers/ub/hw/hns3/hns3_udma_main.c

+1 −0
Original line number Diff line number Diff line
@@ -167,6 +167,7 @@ static struct ubcore_ops g_udma_dev_ops = { 
	.free_ucontext = udma_free_ucontext,

	.mmap = udma_mmap,

	.create_jfc = udma_create_jfc,

	.modify_jfc = udma_modify_jfc,

	.destroy_jfc = udma_destroy_jfc,

};