RE: [PATCH v5 3/5] raw/afu_mf: add HE-LBK AFU driver

["Huang, Wei" <wei.huang@intel.com>]

> -----Original Message-----
> From: Zhang, Tianfei <tianfei.zhang@intel.com>
> Sent: Monday, June 6, 2022 09:41
> To: Huang, Wei <wei.huang@intel.com>; dev@dpdk.org;
> thomas@monjalon.net; nipun.gupta@nxp.com; hemant.agrawal@nxp.com
> Cc: stable@dpdk.org; Xu, Rosen <rosen.xu@intel.com>; Zhang, Qi Z
> <qi.z.zhang@intel.com>
> Subject: RE: [PATCH v5 3/5] raw/afu_mf: add HE-LBK AFU driver
> 
> 
> 
> > -----Original Message-----
> > From: Huang, Wei <wei.huang@intel.com>
> > Sent: Friday, May 27, 2022 1:37 PM
> > To: dev@dpdk.org; thomas@monjalon.net; nipun.gupta@nxp.com;
> > hemant.agrawal@nxp.com
> > Cc: stable@dpdk.org; Xu, Rosen <rosen.xu@intel.com>; Zhang, Tianfei
> > <tianfei.zhang@intel.com>; Zhang, Qi Z <qi.z.zhang@intel.com>; Huang,
> > Wei <wei.huang@intel.com>
> > Subject: [PATCH v5 3/5] raw/afu_mf: add HE-LBK AFU driver
> >
> > HE-LBK and HE-MEM-LBK are host exerciser modules in OFS FPGA, HE-LBK
> > is used to test PCI bus and HE-MEM-LBK is used to test local memory.
> > This driver initialize the modules and report test result.
> >
> > Signed-off-by: Wei Huang <wei.huang@intel.com>
> > ---
> >  drivers/raw/afu_mf/afu_mf_rawdev.c |   5 +
> >  drivers/raw/afu_mf/he_lbk.c        | 427
> > +++++++++++++++++++++++++++++++++++++
> >  drivers/raw/afu_mf/he_lbk.h        | 121 +++++++++++
> >  drivers/raw/afu_mf/meson.build     |   2 +-
> >  drivers/raw/afu_mf/rte_pmd_afu.h   |  14 ++
> >  5 files changed, 568 insertions(+), 1 deletion(-)  create mode 100644
> > drivers/raw/afu_mf/he_lbk.c  create mode 100644
> > drivers/raw/afu_mf/he_lbk.h
> >
> > diff --git a/drivers/raw/afu_mf/afu_mf_rawdev.c
> > b/drivers/raw/afu_mf/afu_mf_rawdev.c
> > index 7c18f3b..e91eb21 100644
> > --- a/drivers/raw/afu_mf/afu_mf_rawdev.c
> > +++ b/drivers/raw/afu_mf/afu_mf_rawdev.c
> > @@ -20,16 +20,21 @@
> >  #include "rte_pmd_afu.h"
> >  #include "afu_mf_rawdev.h"
> >  #include "n3000_afu.h"
> > +#include "he_lbk.h"
> >
> >  #define AFU_MF_PMD_RAWDEV_NAME rawdev_afu_mf
> >
> >  static const struct rte_afu_uuid afu_uuid_map[] = {
> >  	{ N3000_AFU_UUID_L, N3000_AFU_UUID_H },
> > +	{ HE_LBK_UUID_L, HE_LBK_UUID_H },
> > +	{ HE_MEM_LBK_UUID_L, HE_MEM_LBK_UUID_H },
> >  	{ 0, 0 /* sentinel */ }
> >  };
> >
> >  static struct afu_mf_drv *afu_table[] = {
> >  	&n3000_afu_drv,
> > +	&he_lbk_drv,
> > +	&he_mem_lbk_drv,
> >  	NULL
> >  };
> >
> > diff --git a/drivers/raw/afu_mf/he_lbk.c b/drivers/raw/afu_mf/he_lbk.c
> > new file mode 100644 index 0000000..8735647
> > --- /dev/null
> > +++ b/drivers/raw/afu_mf/he_lbk.c
> > @@ -0,0 +1,427 @@
> > +/* SPDX-License-Identifier: BSD-3-Clause
> > + * Copyright(c) 2022 Intel Corporation  */
> > +
> > +#include <errno.h>
> > +#include <stdio.h>
> > +#include <stdint.h>
> > +#include <stdlib.h>
> > +#include <inttypes.h>
> > +#include <unistd.h>
> > +#include <fcntl.h>
> > +#include <poll.h>
> > +#include <sys/eventfd.h>
> > +#include <sys/ioctl.h>
> > +
> > +#include <rte_eal.h>
> > +#include <rte_malloc.h>
> > +#include <rte_memcpy.h>
> > +#include <rte_io.h>
> > +#include <rte_vfio.h>
> > +#include <rte_bus_pci.h>
> > +#include <rte_bus_ifpga.h>
> > +#include <rte_rawdev.h>
> > +
> > +#include "afu_mf_rawdev.h"
> > +#include "he_lbk.h"
> > +
> > +static int he_lbk_afu_config(struct afu_mf_rawdev *dev) {
> > +	struct he_lbk_priv *priv = NULL;
> > +	struct rte_pmd_afu_he_lbk_cfg *cfg = NULL;
> > +	struct he_lbk_csr_cfg v;
> > +
> > +	if (!dev)
> > +		return -EINVAL;
> > +
> > +	priv = (struct he_lbk_priv *)dev->priv;
> > +	if (!priv)
> > +		return -ENOENT;
> > +
> > +	cfg = &priv->he_lbk_cfg;
> > +
> > +	v.csr = 0;
> > +
> > +	if (cfg->cont)
> > +		v.cont = 1;
> > +
> > +	v.mode = cfg->mode;
> > +	v.trput_interleave = cfg->trput_interleave;
> > +	if (cfg->multi_cl == 4)
> > +		v.multicl_len = 2;
> > +	else
> > +		v.multicl_len = cfg->multi_cl - 1;
> > +
> > +	AFU_MF_PMD_DEBUG("cfg: 0x%08x", v.csr);
> > +	rte_write32(v.csr, priv->he_lbk_ctx.addr + CSR_CFG);
> > +
> > +	return 0;
> > +}
> > +
> > +static void he_lbk_report(struct afu_mf_rawdev *dev, uint32_t cl) {
> > +	struct he_lbk_priv *priv = NULL;
> > +	struct rte_pmd_afu_he_lbk_cfg *cfg = NULL;
> > +	struct he_lbk_ctx *ctx = NULL;
> > +	struct he_lbk_dsm_status *stat = NULL;
> > +	struct he_lbk_status0 stat0;
> > +	struct he_lbk_status1 stat1;
> > +	uint64_t swtest_msg = 0;
> > +	uint64_t ticks = 0;
> > +	uint64_t info = 0;
> > +	double num, rd_bw, wr_bw;
> > +
> > +	if (!dev || !dev->priv)
> > +		return;
> > +
> > +	priv = (struct he_lbk_priv *)dev->priv;
> > +	cfg = &priv->he_lbk_cfg;
> > +	ctx = &priv->he_lbk_ctx;
> > +
> > +	stat = ctx->status_ptr;
> > +
> > +	swtest_msg = rte_read64(ctx->addr + CSR_SWTEST_MSG);
> > +	stat0.csr = rte_read64(ctx->addr + CSR_STATUS0);
> > +	stat1.csr = rte_read64(ctx->addr + CSR_STATUS1);
> > +
> > +	if (cfg->cont)
> > +		ticks = stat->num_clocks - stat->start_overhead;
> > +	else
> > +		ticks = stat->num_clocks -
> > +			(stat->start_overhead + stat->end_overhead);
> > +
> > +	if (cfg->freq_mhz == 0) {
> > +		info = rte_read64(ctx->addr + CSR_HE_INFO0);
> > +		AFU_MF_PMD_INFO("API version: %"PRIx64, info >> 16);
> > +		cfg->freq_mhz = info & 0xffff;
> > +		if (cfg->freq_mhz == 0) {
> > +			AFU_MF_PMD_INFO("Frequency of AFU clock is
> > unknown."
> > +				" Assuming 350 MHz.");
> > +			cfg->freq_mhz = 350;
> > +		}
> > +	}
> > +
> > +	num = (double)stat0.num_reads;
> > +	rd_bw = (num * CLS_TO_SIZE(1) * MHZ(cfg->freq_mhz)) / ticks;
> > +	num = (double)stat0.num_writes;
> > +	wr_bw = (num * CLS_TO_SIZE(1) * MHZ(cfg->freq_mhz)) / ticks;
> > +
> > +	printf("Cachelines  Read_Count Write_Count Pend_Read
> Pend_Write "
> > +		"Clocks@%uMHz   Rd_Bandwidth   Wr_Bandwidth\n",
> > +		cfg->freq_mhz);
> > +	printf("%10u  %10u %10u %10u %10u  %12"PRIu64
> > +		"   %7.3f GB/s   %7.3f GB/s\n",
> > +		cl, stat0.num_reads, stat0.num_writes,
> > +		stat1.num_pend_reads, stat1.num_pend_writes,
> > +		ticks, rd_bw / 1e9, wr_bw / 1e9);
> > +	printf("Test Message: 0x%"PRIx64"\n", swtest_msg); }
> > +
> > +static int he_lbk_test(struct afu_mf_rawdev *dev) {
> > +	struct he_lbk_priv *priv = NULL;
> > +	struct rte_pmd_afu_he_lbk_cfg *cfg = NULL;
> > +	struct he_lbk_ctx *ctx = NULL;
> > +	struct he_lbk_csr_ctl ctl;
> > +	uint32_t *ptr = NULL;
> > +	uint32_t i, j, cl, val = 0;
> > +	uint64_t sval = 0;
> > +	int ret = 0;
> > +
> > +	if (!dev)
> > +		return -EINVAL;
> > +
> > +	priv = (struct he_lbk_priv *)dev->priv;
> > +	if (!priv)
> > +		return -ENOENT;
> > +
> > +	cfg = &priv->he_lbk_cfg;
> > +	ctx = &priv->he_lbk_ctx;
> > +
> > +	ctl.csr = 0;
> > +	rte_write32(ctl.csr, ctx->addr + CSR_CTL);
> > +	rte_delay_us(1000);
> > +	ctl.reset = 1;
> > +	rte_write32(ctl.csr, ctx->addr + CSR_CTL);
> > +
> > +	/* initialize DMA addresses */
> > +	AFU_MF_PMD_DEBUG("src_addr: 0x%"PRIx64, ctx->src_iova);
> > +	rte_write64(SIZE_TO_CLS(ctx->src_iova), ctx->addr +
> CSR_SRC_ADDR);
> > +
> > +	AFU_MF_PMD_DEBUG("dst_addr: 0x%"PRIx64, ctx->dest_iova);
> > +	rte_write64(SIZE_TO_CLS(ctx->dest_iova), ctx->addr +
> CSR_DST_ADDR);
> > +
> > +	AFU_MF_PMD_DEBUG("dsm_addr: 0x%"PRIx64, ctx->dsm_iova);
> > +	rte_write32(SIZE_TO_CLS(ctx->dsm_iova), ctx->addr +
> > CSR_AFU_DSM_BASEL);
> > +	rte_write32(SIZE_TO_CLS(ctx->dsm_iova) >> 32,
> > +		ctx->addr + CSR_AFU_DSM_BASEH);
> > +
> > +	ret = he_lbk_afu_config(dev);
> > +	if (ret)
> > +		return ret;
> > +
> > +	/* initialize src data */
> > +	ptr = (uint32_t *)ctx->src_ptr;
> > +	j = CLS_TO_SIZE(cfg->end) >> 2;
> > +	for (i = 0; i < j; i++)
> > +		*ptr++ = i;
> > +
> > +	/* start test */
> > +	for (cl = cfg->begin; cl <= cfg->end; cl += cfg->multi_cl) {
> > +		memset(ctx->dest_ptr, 0, CLS_TO_SIZE(cl));
> > +		memset(ctx->dsm_ptr, 0, DSM_SIZE);
> > +
> > +		ctl.csr = 0;
> > +		rte_write32(ctl.csr, ctx->addr + CSR_CTL);
> > +		rte_delay_us(1000);
> > +		ctl.reset = 1;
> > +		rte_write32(ctl.csr, ctx->addr + CSR_CTL);
> > +
> > +		rte_write32(cl - 1, ctx->addr + CSR_NUM_LINES);
> > +
> > +		ctl.start = 1;
> > +		rte_write32(ctl.csr, ctx->addr + CSR_CTL);
> > +
> > +		if (cfg->cont) {
> > +			rte_delay_ms(cfg->timeout * 1000);
> > +			ctl.force_completion = 1;
> > +			rte_write32(ctl.csr, ctx->addr + CSR_CTL);
> > +			ret = dsm_poll_timeout(&ctx->status_ptr-
> > >test_complete,
> > +				val, (val & 0x1) == 1, DSM_POLL_INTERVAL,
> > +				DSM_TIMEOUT);
> > +			if (ret) {
> > +				printf("DSM poll timeout\n");
> > +				goto end;
> > +			}
> > +		} else {
> > +			ret = dsm_poll_timeout(&ctx->status_ptr-
> > >test_complete,
> > +				val, (val & 0x1) == 1, DSM_POLL_INTERVAL,
> > +				DSM_TIMEOUT);
> > +			if (ret) {
> > +				printf("DSM poll timeout\n");
> > +				goto end;
> > +			}
> > +			ctl.force_completion = 1;
> > +			rte_write32(ctl.csr, ctx->addr + CSR_CTL);
> > +		}
> > +
> > +		he_lbk_report(dev, cl);
> > +
> > +		i = 0;
> > +		while (i++ < 100) {
> > +			sval = rte_read64(ctx->addr + CSR_STATUS1);
> > +			if (sval == 0)
> > +				break;
> > +			rte_delay_us(1000);
> > +		}
> > +
> > +		if (cfg->mode == NLB_MODE_LPBK) {
> > +			ptr = (uint32_t *)ctx->dest_ptr;
> > +			j = CLS_TO_SIZE(cl) >> 2;
> > +			for (i = 0; i < j; i++) {
> > +				if (*ptr++ != i) {
> > +					AFU_MF_PMD_ERR("Data mismatch
> @
> > %u", i);
> > +					break;
> > +				}
> > +			}
> > +		}
> > +	}
> > +
> > +end:
> > +	return 0;
> > +}
> > +
> > +static int he_lbk_ctx_release(struct afu_mf_rawdev *dev) {
> > +	struct he_lbk_priv *priv = NULL;
> > +	struct he_lbk_ctx *ctx = NULL;
> > +
> > +	if (!dev)
> > +		return -EINVAL;
> > +
> > +	priv = (struct he_lbk_priv *)dev->priv;
> > +	if (!priv)
> > +		return -ENOENT;
> > +
> > +	ctx = &priv->he_lbk_ctx;
> > +
> > +	rte_free(ctx->dsm_ptr);
> > +	ctx->dsm_ptr = NULL;
> > +	ctx->status_ptr = NULL;
> > +
> > +	rte_free(ctx->src_ptr);
> > +	ctx->src_ptr = NULL;
> > +
> > +	rte_free(ctx->dest_ptr);
> > +	ctx->dest_ptr = NULL;
> > +
> > +	return 0;
> > +}
> > +
> > +static int he_lbk_ctx_init(struct afu_mf_rawdev *dev) {
> > +	struct he_lbk_priv *priv = NULL;
> > +	struct he_lbk_ctx *ctx = NULL;
> > +	int ret = 0;
> > +
> > +	if (!dev)
> > +		return -EINVAL;
> > +
> > +	priv = (struct he_lbk_priv *)dev->priv;
> > +	if (!priv)
> > +		return -ENOENT;
> > +
> > +	ctx = &priv->he_lbk_ctx;
> > +	ctx->addr = (uint8_t *)dev->addr;
> > +
> > +	ctx->dsm_ptr = (uint8_t *)rte_zmalloc(NULL, DSM_SIZE,
> > TEST_MEM_ALIGN);
> > +	if (!ctx->dsm_ptr) {
> > +		ret = -ENOMEM;
> > +		goto release;
> > +	}
> > +	ctx->dsm_iova = rte_malloc_virt2iova(ctx->dsm_ptr);
> > +	if (ctx->dsm_iova == RTE_BAD_IOVA) {
> > +		ret = -ENOMEM;
> > +		goto release;
> > +	}
> > +
> > +	ctx->src_ptr = (uint8_t *)rte_zmalloc(NULL, NLB_BUF_SIZE,
> > +		TEST_MEM_ALIGN);
> > +	if (!ctx->src_ptr) {
> > +		ret = -ENOMEM;
> > +		goto release;
> 
> If ctx->src_ptr alloc fail, he_lbk_ctx_release() can work?
> 
He_lbk_ctx_release() can work correct in failure situation, but it's not standard exception handle, I will change it.
> > +	}
> > +	ctx->src_iova = rte_malloc_virt2iova(ctx->src_ptr);
> > +	if (ctx->src_iova == RTE_BAD_IOVA) {
> > +		ret = -ENOMEM;
> > +		goto release;
> > +	}
> > +
> > +	ctx->dest_ptr = (uint8_t *)rte_zmalloc(NULL, NLB_BUF_SIZE,
> > +		TEST_MEM_ALIGN);
> > +	if (!ctx->dest_ptr) {
> > +		ret = -ENOMEM;
> > +		goto release;
> > +	}
> > +	ctx->dest_iova = rte_malloc_virt2iova(ctx->dest_ptr);
> > +	if (ctx->dest_iova == RTE_BAD_IOVA) {
> > +		ret = -ENOMEM;
> > +		goto release;
> > +	}
> > +
> > +	ctx->status_ptr = (struct he_lbk_dsm_status *)ctx->dsm_ptr;
> > +	return 0;
> > +
> > +release:
> > +	he_lbk_ctx_release(dev);
> > +	return ret;
> > +}
> > +
> > +static int he_lbk_init(struct afu_mf_rawdev *dev) {
> > +	if (!dev)
> > +		return -EINVAL;
> > +
> > +	if (!dev->priv) {
> > +		dev->priv = rte_zmalloc(NULL, sizeof(struct he_lbk_priv), 0);
> > +		if (!dev->priv)
> > +			return -ENOMEM;
> > +	}
> > +
> > +	return he_lbk_ctx_init(dev);
> > +}
> > +
> > +static int he_lbk_config(struct afu_mf_rawdev *dev, void *config,
> > +	size_t config_size)
> > +{
> > +	struct he_lbk_priv *priv = NULL;
> > +	struct rte_pmd_afu_he_lbk_cfg *cfg = NULL;
> > +
> > +	if (!dev || !config || !config_size)
> > +		return -EINVAL;
> > +
> > +	priv = (struct he_lbk_priv *)dev->priv;
> > +	if (!priv)
> > +		return -ENOENT;
> > +
> > +	if (config_size != sizeof(struct rte_pmd_afu_he_lbk_cfg))
> > +		return -EINVAL;
> > +
> > +	cfg = (struct rte_pmd_afu_he_lbk_cfg *)config;
> > +	if (cfg->mode > NLB_MODE_TRPUT)
> > +		return -EINVAL;
> > +	if ((cfg->multi_cl != 1) && (cfg->multi_cl != 2) &&
> > +		(cfg->multi_cl != 4))
> > +		return -EINVAL;
> > +	if ((cfg->begin < MIN_CACHE_LINES) || (cfg->begin >
> > MAX_CACHE_LINES))
> > +		return -EINVAL;
> > +	if ((cfg->end < cfg->begin) || (cfg->end > MAX_CACHE_LINES))
> > +		return -EINVAL;
> > +
> > +	rte_memcpy(&priv->he_lbk_cfg, cfg, sizeof(priv->he_lbk_cfg));
> > +
> > +	return 0;
> > +}
> > +
> > +static int he_lbk_close(struct afu_mf_rawdev *dev) {
> > +	if (!dev)
> > +		return -EINVAL;
> > +
> > +	he_lbk_ctx_release(dev);
> > +
> > +	rte_free(dev->priv);
> > +	dev->priv = NULL;
> > +
> > +	return 0;
> > +}
> > +
> > +static int he_lbk_dump(struct afu_mf_rawdev *dev, FILE *f) {
> > +	struct he_lbk_priv *priv = NULL;
> > +	struct he_lbk_ctx *ctx = NULL;
> > +
> > +	if (!dev)
> > +		return -EINVAL;
> > +
> > +	priv = (struct he_lbk_priv *)dev->priv;
> > +	if (!priv)
> > +		return -ENOENT;
> > +
> > +	if (!f)
> > +		f = stdout;
> > +
> > +	ctx = &priv->he_lbk_ctx;
> > +
> > +	fprintf(f, "addr:\t\t%p\n", (void *)ctx->addr);
> > +	fprintf(f, "dsm_ptr:\t%p\n", (void *)ctx->dsm_ptr);
> > +	fprintf(f, "dsm_iova:\t0x%"PRIx64"\n", ctx->dsm_iova);
> > +	fprintf(f, "src_ptr:\t%p\n", (void *)ctx->src_ptr);
> > +	fprintf(f, "src_iova:\t0x%"PRIx64"\n", ctx->src_iova);
> > +	fprintf(f, "dest_ptr:\t%p\n", (void *)ctx->dest_ptr);
> > +	fprintf(f, "dest_iova:\t0x%"PRIx64"\n", ctx->dest_iova);
> > +	fprintf(f, "status_ptr:\t%p\n", (void *)ctx->status_ptr);
> > +
> > +	return 0;
> > +}
> > +
> > +static struct afu_mf_ops he_lbk_ops = {
> > +	.init = he_lbk_init,
> > +	.config = he_lbk_config,
> > +	.start = NULL,
> > +	.stop = NULL,
> > +	.test = he_lbk_test,
> > +	.close = he_lbk_close,
> > +	.dump = he_lbk_dump,
> > +	.reset = NULL
> > +};
> > +
> > +struct afu_mf_drv he_lbk_drv = {
> > +	.uuid = { HE_LBK_UUID_L, HE_LBK_UUID_H },
> > +	.ops = &he_lbk_ops
> > +};
> > +
> > +struct afu_mf_drv he_mem_lbk_drv = {
> > +	.uuid = { HE_MEM_LBK_UUID_L, HE_MEM_LBK_UUID_H },
> > +	.ops = &he_lbk_ops
> > +};
> > diff --git a/drivers/raw/afu_mf/he_lbk.h b/drivers/raw/afu_mf/he_lbk.h
> > new file mode 100644 index 0000000..c2e8a29
> > --- /dev/null
> > +++ b/drivers/raw/afu_mf/he_lbk.h
> > @@ -0,0 +1,121 @@
> > +/* SPDX-License-Identifier: BSD-3-Clause
> > + * Copyright(c) 2022 Intel Corporation  */
> > +
> > +#ifndef _HE_LBK_H_
> > +#define _HE_LBK_H_
> > +
> > +#include "afu_mf_rawdev.h"
> > +#include "rte_pmd_afu.h"
> > +
> > +#define HE_LBK_UUID_L      0xb94b12284c31e02b
> > +#define HE_LBK_UUID_H      0x56e203e9864f49a7
> > +#define HE_MEM_LBK_UUID_L  0xbb652a578330a8eb #define
> > HE_MEM_LBK_UUID_H
> > +0x8568ab4e6ba54616
> > +
> > +extern struct afu_mf_drv he_lbk_drv;
> > +extern struct afu_mf_drv he_mem_lbk_drv;
> > +
> > +/* HE-LBK & HE-MEM-LBK registers definition */
> > +#define CSR_SCRATCHPAD0    0x100
> > +#define CSR_SCRATCHPAD1    0x108
> > +#define CSR_AFU_DSM_BASEL  0x110
> > +#define CSR_AFU_DSM_BASEH  0x114
> > +#define CSR_SRC_ADDR       0x120
> > +#define CSR_DST_ADDR       0x128
> > +#define CSR_NUM_LINES      0x130
> > +#define CSR_CTL            0x138
> > +#define CSR_CFG            0x140
> > +#define CSR_INACT_THRESH   0x148
> > +#define CSR_INTERRUPT0     0x150
> > +#define CSR_SWTEST_MSG     0x158
> > +#define CSR_STATUS0        0x160
> > +#define CSR_STATUS1        0x168
> > +#define CSR_ERROR          0x170
> > +#define CSR_STRIDE         0x178
> > +#define CSR_HE_INFO0       0x180
> > +
> > +#define DSM_SIZE           0x200000
> > +#define DSM_POLL_INTERVAL  5  /* ms */
> > +#define DSM_TIMEOUT        1000  /* ms */
> > +
> > +#define NLB_BUF_SIZE  0x400000
> > +#define TEST_MEM_ALIGN  1024
> > +
> > +struct he_lbk_csr_ctl {
> > +	union {
> > +		uint32_t csr;
> > +		struct {
> > +			uint32_t reset:1;
> > +			uint32_t start:1;
> > +			uint32_t force_completion:1;
> > +			uint32_t reserved:29;
> > +		};
> > +	};
> > +};
> > +
> > +struct he_lbk_csr_cfg {
> > +	union {
> > +		uint32_t csr;
> > +		struct {
> > +			uint32_t rsvd1:1;
> > +			uint32_t cont:1;
> > +			uint32_t mode:3;
> > +			uint32_t multicl_len:2;
> > +			uint32_t rsvd2:13;
> > +			uint32_t trput_interleave:3;
> > +			uint32_t test_cfg:5;
> > +			uint32_t interrupt_on_error:1;
> > +			uint32_t interrupt_testmode:1;
> > +			uint32_t rsvd3:2;
> > +		};
> > +	};
> > +};
> > +
> > +struct he_lbk_status0 {
> > +	union {
> > +		uint64_t csr;
> > +		struct {
> > +			uint32_t num_writes;
> > +			uint32_t num_reads;
> > +		};
> > +	};
> > +};
> > +
> > +struct he_lbk_status1 {
> > +	union {
> > +		uint64_t csr;
> > +		struct {
> > +			uint32_t num_pend_writes;
> > +			uint32_t num_pend_reads;
> > +		};
> > +	};
> > +};
> > +
> > +struct he_lbk_dsm_status {
> > +	uint32_t test_complete;
> > +	uint32_t test_error;
> > +	uint64_t num_clocks;
> > +	uint32_t num_reads;
> > +	uint32_t num_writes;
> > +	uint32_t start_overhead;
> > +	uint32_t end_overhead;
> > +};
> > +
> > +struct he_lbk_ctx {
> > +	uint8_t *addr;
> > +	uint8_t *dsm_ptr;
> > +	uint64_t dsm_iova;
> > +	uint8_t *src_ptr;
> > +	uint64_t src_iova;
> > +	uint8_t *dest_ptr;
> > +	uint64_t dest_iova;
> > +	struct he_lbk_dsm_status *status_ptr; };
> > +
> > +struct he_lbk_priv {
> > +	struct rte_pmd_afu_he_lbk_cfg he_lbk_cfg;
> > +	struct he_lbk_ctx he_lbk_ctx;
> > +};
> > +
> > +#endif /* _HE_LBK_H_ */
> > diff --git a/drivers/raw/afu_mf/meson.build
> > b/drivers/raw/afu_mf/meson.build index 8a989e3..a983f53 100644
> > --- a/drivers/raw/afu_mf/meson.build
> > +++ b/drivers/raw/afu_mf/meson.build
> > @@ -2,6 +2,6 @@
> >  # Copyright 2022 Intel Corporation
> >
> >  deps += ['rawdev', 'bus_pci', 'bus_ifpga'] -sources =
> > files('afu_mf_rawdev.c',
> > 'n3000_afu.c')
> > +sources = files('afu_mf_rawdev.c', 'n3000_afu.c', 'he_lbk.c')
> >
> >  headers = files('rte_pmd_afu.h')
> > diff --git a/drivers/raw/afu_mf/rte_pmd_afu.h
> > b/drivers/raw/afu_mf/rte_pmd_afu.h
> > index f14a053..658df55 100644
> > --- a/drivers/raw/afu_mf/rte_pmd_afu.h
> > +++ b/drivers/raw/afu_mf/rte_pmd_afu.h
> > @@ -90,6 +90,20 @@ struct rte_pmd_afu_n3000_cfg {
> >  	};
> >  };
> >
> > +/**
> > + * HE-LBK & HE-MEM-LBK AFU configuration data structure.
> > + */
> > +struct rte_pmd_afu_he_lbk_cfg {
> > +	uint32_t mode;
> > +	uint32_t begin;
> > +	uint32_t end;
> > +	uint32_t multi_cl;
> > +	uint32_t cont;
> > +	uint32_t timeout;
> > +	uint32_t trput_interleave;
> > +	uint32_t freq_mhz;
> > +};
> > +
> >  #ifdef __cplusplus
> >  }
> >  #endif
> > --
> > 1.8.3.1