Re: [dpdk-dev] [PATCH v1] net/ice: use rx/tx DMA iova instead of phys_addr which is deprecated

["Wang, Haiyue" <haiyue.wang@intel.com>]

Hi Xiaolong,

> -----Original Message-----
> From: Wang, Haiyue
> Sent: Friday, July 12, 2019 10:12
> To: Ye, Xiaolong <xiaolong.ye@intel.com>
> Cc: dev@dpdk.org; stable@dpdk.org
> Subject: RE: [dpdk-dev] [PATCH v1] net/ice: use rx/tx DMA iova instead of phys_addr which is
> deprecated
> 
> > -----Original Message-----
> > From: Ye, Xiaolong
> > Sent: Friday, July 12, 2019 16:30
> > To: Wang, Haiyue <haiyue.wang@intel.com>
> > Cc: dev@dpdk.org; stable@dpdk.org
> > Subject: Re: [dpdk-dev] [PATCH v1] net/ice: use rx/tx DMA iova instead of phys_addr which is
> > deprecated
> >
> > Hi, Haiyue
> >
> > On 07/12, Haiyue Wang wrote:
> > >The phys_addr concept is deprecated in rte_memzone, change it to access
> > >iova member, and use the type 'rte_iova_t'.
> > >
> >
> > It seems this issue also exists in other PMDs, like ixgbe, i40e, iavf..., do
> > you have plan to fix them all?
> >
> I will check them later and submit series of patches. ;)

I found that ixgbe, i40e, iavf had used 'rz->iova' instead of 'rz->phys_addr', this was
the main reason that I changed it for ice. For the name & type, I think it may be acceptable,
need no more patches to change them.

> > For the patch, Reviewed-by: Xiaolong Ye <xiaolong.ye@intel.com>
> >
> > Thanks,
> > Xiaolong
> >
> > >Also rename the rx/tx_ring_phys_addr definitions to rx/tx_ring_dma that
> > >matches the IOVA concept design.
> > >
> > >Fixes: 50370662b727 ("net/ice: support device and queue ops")
> > >Cc: stable@dpdk.org
> > >
> > >Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
> > >---
> > > drivers/net/ice/ice_rxtx.c | 8 ++++----
> > > drivers/net/ice/ice_rxtx.h | 4 ++--
> > > 2 files changed, 6 insertions(+), 6 deletions(-)
> > >
> > >diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c
> > >index 035ed84..3353f23 100644
> > >--- a/drivers/net/ice/ice_rxtx.c
> > >+++ b/drivers/net/ice/ice_rxtx.c
> > >@@ -70,7 +70,7 @@ ice_program_hw_rx_queue(struct ice_rx_queue *rxq)
> > >
> > > 	memset(&rx_ctx, 0, sizeof(rx_ctx));
> > >
> > >-	rx_ctx.base = rxq->rx_ring_phys_addr / ICE_QUEUE_BASE_ADDR_UNIT;
> > >+	rx_ctx.base = rxq->rx_ring_dma / ICE_QUEUE_BASE_ADDR_UNIT;
> > > 	rx_ctx.qlen = rxq->nb_rx_desc;
> > > 	rx_ctx.dbuf = rxq->rx_buf_len >> ICE_RLAN_CTX_DBUF_S;
> > > 	rx_ctx.hbuf = rxq->rx_hdr_len >> ICE_RLAN_CTX_HBUF_S;
> > >@@ -442,7 +442,7 @@ ice_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
> > > 	txq_elem.num_txqs = 1;
> > > 	txq_elem.txqs[0].txq_id = rte_cpu_to_le_16(txq->reg_idx);
> > >
> > >-	tx_ctx.base = txq->tx_ring_phys_addr / ICE_QUEUE_BASE_ADDR_UNIT;
> > >+	tx_ctx.base = txq->tx_ring_dma / ICE_QUEUE_BASE_ADDR_UNIT;
> > > 	tx_ctx.qlen = txq->nb_tx_desc;
> > > 	tx_ctx.pf_num = hw->pf_id;
> > > 	tx_ctx.vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_PF;
> > >@@ -663,7 +663,7 @@ ice_rx_queue_setup(struct rte_eth_dev *dev,
> > > 	/* Zero all the descriptors in the ring. */
> > > 	memset(rz->addr, 0, ring_size);
> > >
> > >-	rxq->rx_ring_phys_addr = rz->phys_addr;
> > >+	rxq->rx_ring_dma = rz->iova;
> > > 	rxq->rx_ring = (union ice_rx_desc *)rz->addr;
> > >
> > > #ifdef RTE_LIBRTE_ICE_RX_ALLOW_BULK_ALLOC
> > >@@ -881,7 +881,7 @@ ice_tx_queue_setup(struct rte_eth_dev *dev,
> > > 	txq->vsi = vsi;
> > > 	txq->tx_deferred_start = tx_conf->tx_deferred_start;
> > >
> > >-	txq->tx_ring_phys_addr = tz->phys_addr;
> > >+	txq->tx_ring_dma = tz->iova;
> > > 	txq->tx_ring = (struct ice_tx_desc *)tz->addr;
> > >
> > > 	/* Allocate software ring */
> > >diff --git a/drivers/net/ice/ice_rxtx.h b/drivers/net/ice/ice_rxtx.h
> > >index 9040e3f..e921411 100644
> > >--- a/drivers/net/ice/ice_rxtx.h
> > >+++ b/drivers/net/ice/ice_rxtx.h
> > >@@ -46,7 +46,7 @@ struct ice_rx_entry {
> > > struct ice_rx_queue {
> > > 	struct rte_mempool *mp; /* mbuf pool to populate RX ring */
> > > 	volatile union ice_rx_desc *rx_ring;/* RX ring virtual address */
> > >-	uint64_t rx_ring_phys_addr; /* RX ring DMA address */
> > >+	rte_iova_t rx_ring_dma; /* RX ring DMA address */
> > > 	struct ice_rx_entry *sw_ring; /* address of RX soft ring */
> > > 	uint16_t nb_rx_desc; /* number of RX descriptors */
> > > 	uint16_t rx_free_thresh; /* max free RX desc to hold */
> > >@@ -87,7 +87,7 @@ struct ice_tx_entry {
> > >
> > > struct ice_tx_queue {
> > > 	uint16_t nb_tx_desc; /* number of TX descriptors */
> > >-	uint64_t tx_ring_phys_addr; /* TX ring DMA address */
> > >+	rte_iova_t tx_ring_dma; /* TX ring DMA address */
> > > 	volatile struct ice_tx_desc *tx_ring; /* TX ring virtual address */
> > > 	struct ice_tx_entry *sw_ring; /* virtual address of SW ring */
> > > 	uint16_t tx_tail; /* current value of tail register */
> > >--
> > >2.7.4
> > >