Hi Chenbo,
Thanks for your effort.
> -----Original Message-----
> From: Xia, Chenbo <chenbo....@intel.com>
> Sent: Monday, October 17, 2022 2:21 PM
> To: Pei, Andy <andy....@intel.com>; dev@dpdk.org
> Cc: Xu, Rosen <rosen...@intel.com>; Huang, Wei <wei.hu...@intel.com>;
> Cao, Gang <gang....@intel.com>; maxime.coque...@redhat.com
> Subject: RE: [PATCH v4 2/8] vdpa/ifc: add multi-queue support
>
> > -----Original Message-----
> > From: Pei, Andy <andy....@intel.com>
> > Sent: Thursday, October 13, 2022 4:44 PM
> > To: dev@dpdk.org
> > Cc: Xia, Chenbo <chenbo....@intel.com>; Xu, Rosen
> > <rosen...@intel.com>; Huang, Wei <wei.hu...@intel.com>; Cao, Gang
> > <gang....@intel.com>; maxime.coque...@redhat.com
> > Subject: [PATCH v4 2/8] vdpa/ifc: add multi-queue support
> >
> > Enable VHOST_USER_PROTOCOL_F_MQ feature.
> > Expose IFCVF_MQ_OFFSET register to enable multi-queue.
> >
> > Signed-off-by: Andy Pei <andy....@intel.com>
> > Signed-off-by: Huang Wei <wei.hu...@intel.com>
> > ---
> > drivers/vdpa/ifc/base/ifcvf.c | 9 +++++++++
> > drivers/vdpa/ifc/base/ifcvf.h | 2 ++ drivers/vdpa/ifc/ifcvf_vdpa.c |
> > 1 +
> > 3 files changed, 12 insertions(+)
> >
> > diff --git a/drivers/vdpa/ifc/base/ifcvf.c
> > b/drivers/vdpa/ifc/base/ifcvf.c index f1e1474..81c68c0 100644
> > --- a/drivers/vdpa/ifc/base/ifcvf.c
> > +++ b/drivers/vdpa/ifc/base/ifcvf.c
> > @@ -90,6 +90,15 @@
> > if (!hw->lm_cfg)
> > WARNINGOUT("HW support live migration not support!\n");
> >
> > + /* For some hardware implementation, for example:
> > + * the BAR 4 of PF is NULL, while BAR 4 of VF is not.
> > + * This code makes sure hw->mq_cfg is a valid address.
> > + */
> > + if (hw->mem_resource[4].addr)
> > + hw->mq_cfg = hw->mem_resource[4].addr +
> IFCVF_MQ_OFFSET;
> > + else
> > + hw->mq_cfg = NULL;
> > +
> > if (hw->common_cfg == NULL || hw->notify_base == NULL ||
> > hw->isr == NULL || hw->dev_cfg == NULL) {
> > DEBUGOUT("capability incomplete\n"); diff --git
> > a/drivers/vdpa/ifc/base/ifcvf.h b/drivers/vdpa/ifc/base/ifcvf.h index
> > ef7697a..d16d9ab 100644
> > --- a/drivers/vdpa/ifc/base/ifcvf.h
> > +++ b/drivers/vdpa/ifc/base/ifcvf.h
> > @@ -50,6 +50,7 @@
> >
> > #define IFCVF_LM_CFG_SIZE 0x40
> > #define IFCVF_LM_RING_STATE_OFFSET 0x20
> > +#define IFCVF_MQ_OFFSET 0x28
> >
> > #define IFCVF_LM_LOGGING_CTRL 0x0
> >
> > @@ -149,6 +150,7 @@ struct ifcvf_hw {
> > u16 *notify_base;
> > u16 *notify_addr[IFCVF_MAX_QUEUES * 2];
> > u8 *lm_cfg;
> > + u8 *mq_cfg;
> > struct vring_info vring[IFCVF_MAX_QUEUES * 2];
> > u8 nr_vring;
> > int device_type;
> > diff --git a/drivers/vdpa/ifc/ifcvf_vdpa.c
> > b/drivers/vdpa/ifc/ifcvf_vdpa.c index b4389a0..008cf89 100644
> > --- a/drivers/vdpa/ifc/ifcvf_vdpa.c
> > +++ b/drivers/vdpa/ifc/ifcvf_vdpa.c
> > @@ -1248,6 +1248,7 @@ struct rte_vdpa_dev_info {
> > 1ULL << VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD | \
> > 1ULL << VHOST_USER_PROTOCOL_F_HOST_NOTIFIER | \
> > 1ULL << VHOST_USER_PROTOCOL_F_LOG_SHMFD | \
> > + 1ULL << VHOST_USER_PROTOCOL_F_MQ | \
> > 1ULL << VHOST_USER_PROTOCOL_F_STATUS)
> >
> > #define VDPA_BLK_PROTOCOL_FEATURES \
> > --
> > 1.8.3.1
>
> Reviewed-by: Chenbo Xia <chenbo....@intel.com>
