diff mbox series

[v7,16/18] vdpa/ifc/base: access correct register for blk device

Message ID 1651048206-282372-17-git-send-email-andy.pei@intel.com (mailing list archive)
State Superseded, archived
Delegated to: Maxime Coquelin
Headers
Series add virtio_blk device support to vdpa/ifc |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Pei, Andy April 27, 2022, 8:30 a.m. UTC 
  1.last_avail_idx is lower 16 bit of the register.
2.address of ring_state register is different between net and blk device.

Signed-off-by: Andy Pei <andy.pei@intel.com>
---
 drivers/vdpa/ifc/base/ifcvf.c | 36 +++++++++++++++++++++++++++++-------
 drivers/vdpa/ifc/base/ifcvf.h |  1 +
 2 files changed, 30 insertions(+), 7 deletions(-)

Comments

Chenbo Xia May 13, 2022, 2:57 a.m. UTC | #1 
> -----Original Message-----
> From: Pei, Andy <andy.pei@intel.com>
> Sent: Wednesday, April 27, 2022 4:30 PM
> To: dev@dpdk.org
> Cc: Xia, Chenbo <chenbo.xia@intel.com>; maxime.coquelin@redhat.com; Cao,
> Gang <gang.cao@intel.com>; Liu, Changpeng <changpeng.liu@intel.com>
> Subject: [PATCH v7 16/18] vdpa/ifc/base: access correct register for blk
> device
> 
> 1.last_avail_idx is lower 16 bit of the register.
> 2.address of ring_state register is different between net and blk device.

Not a good commit log. The commit log should illustrate more on what's the
commit is doing.

Thanks,
Chenbo

> 
> Signed-off-by: Andy Pei <andy.pei@intel.com>
> ---
>  drivers/vdpa/ifc/base/ifcvf.c | 36 +++++++++++++++++++++++++++++-------
>  drivers/vdpa/ifc/base/ifcvf.h |  1 +
>  2 files changed, 30 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/vdpa/ifc/base/ifcvf.c b/drivers/vdpa/ifc/base/ifcvf.c
> index d10c1fd..4d5881a 100644
> --- a/drivers/vdpa/ifc/base/ifcvf.c
> +++ b/drivers/vdpa/ifc/base/ifcvf.c
> @@ -218,10 +218,18 @@
>  				&cfg->queue_used_hi);
>  		IFCVF_WRITE_REG16(hw->vring[i].size, &cfg->queue_size);
> 
> -		*(u32 *)(lm_cfg + IFCVF_LM_RING_STATE_OFFSET +
> -				(i / 2) * IFCVF_LM_CFG_SIZE + (i % 2) * 4) =
> -			(u32)hw->vring[i].last_avail_idx |
> -			((u32)hw->vring[i].last_used_idx << 16);
> +		if (hw->is_blk == IFCVF_BLK) {
> +			*(u32 *)(lm_cfg + IFCVF_LM_RING_STATE_OFFSET +
> +				i * IFCVF_LM_CFG_SIZE) =
> +				(u32)hw->vring[i].last_avail_idx |
> +				((u32)hw->vring[i].last_used_idx << 16);
> +		} else if (hw->is_blk == IFCVF_NET) {
> +			*(u32 *)(lm_cfg + IFCVF_LM_RING_STATE_OFFSET +
> +				(i / 2) * IFCVF_LM_CFG_SIZE +
> +				(i % 2) * 4) =
> +				(u32)hw->vring[i].last_avail_idx |
> +				((u32)hw->vring[i].last_used_idx << 16);
> +		}
> 
>  		IFCVF_WRITE_REG16(i + 1, &cfg->queue_msix_vector);
>  		if (IFCVF_READ_REG16(&cfg->queue_msix_vector) ==
> @@ -254,9 +262,23 @@
>  		IFCVF_WRITE_REG16(i, &cfg->queue_select);
>  		IFCVF_WRITE_REG16(0, &cfg->queue_enable);
>  		IFCVF_WRITE_REG16(IFCVF_MSI_NO_VECTOR, &cfg-
> >queue_msix_vector);
> -		ring_state = *(u32 *)(hw->lm_cfg + IFCVF_LM_RING_STATE_OFFSET
> +
> -				(i / 2) * IFCVF_LM_CFG_SIZE + (i % 2) * 4);
> -		hw->vring[i].last_avail_idx = (u16)(ring_state >> 16);
> +
> +		if (hw->is_blk) {
> +			ring_state = *(u32 *)(hw->lm_cfg +
> +					IFCVF_LM_RING_STATE_OFFSET +
> +					i * IFCVF_LM_CFG_SIZE);
> +		} else if (hw->is_blk == IFCVF_NET) {
> +			ring_state = *(u32 *)(hw->lm_cfg +
> +					IFCVF_LM_RING_STATE_OFFSET +
> +					(i / 2) * IFCVF_LM_CFG_SIZE +
> +					(i % 2) * 4);
> +		}
> +
> +		if (hw->is_blk == IFCVF_BLK)
> +			hw->vring[i].last_avail_idx =
> +				(u16)(ring_state & IFCVF_16_BIT_MASK);
> +		else if (hw->is_blk == IFCVF_NET)
> +			hw->vring[i].last_avail_idx = (u16)(ring_state >> 16);
>  		hw->vring[i].last_used_idx = (u16)(ring_state >> 16);
>  	}
>  }
> diff --git a/drivers/vdpa/ifc/base/ifcvf.h b/drivers/vdpa/ifc/base/ifcvf.h
> index 8591ef1..ff11b12 100644
> --- a/drivers/vdpa/ifc/base/ifcvf.h
> +++ b/drivers/vdpa/ifc/base/ifcvf.h
> @@ -65,6 +65,7 @@
>  #define IFCVF_MEDIATED_VRING		0x200000000000
> 
>  #define IFCVF_32_BIT_MASK		0xffffffff
> +#define IFCVF_16_BIT_MASK		0xffff
> 
>  #ifndef VHOST_USER_PROTOCOL_F_CONFIG
>  #define VHOST_USER_PROTOCOL_F_CONFIG	9
> --
> 1.8.3.1
Pei, Andy May 16, 2022, 4:19 a.m. UTC | #2 
HI Chenbo,

Thanks for your reply.
I will send out a new version to fix this.

> -----Original Message-----
> From: Xia, Chenbo <chenbo.xia@intel.com>
> Sent: Friday, May 13, 2022 10:58 AM
> To: Pei, Andy <andy.pei@intel.com>; dev@dpdk.org
> Cc: maxime.coquelin@redhat.com; Cao, Gang <gang.cao@intel.com>; Liu,
> Changpeng <changpeng.liu@intel.com>
> Subject: RE: [PATCH v7 16/18] vdpa/ifc/base: access correct register for blk
> device
> 
> > -----Original Message-----
> > From: Pei, Andy <andy.pei@intel.com>
> > Sent: Wednesday, April 27, 2022 4:30 PM
> > To: dev@dpdk.org
> > Cc: Xia, Chenbo <chenbo.xia@intel.com>; maxime.coquelin@redhat.com;
> > Cao, Gang <gang.cao@intel.com>; Liu, Changpeng
> > <changpeng.liu@intel.com>
> > Subject: [PATCH v7 16/18] vdpa/ifc/base: access correct register for
> > blk device
> >
> > 1.last_avail_idx is lower 16 bit of the register.
> > 2.address of ring_state register is different between net and blk device.
> 
> Not a good commit log. The commit log should illustrate more on what's the
> commit is doing.
> 
> Thanks,
> Chenbo
> 
> >
> > Signed-off-by: Andy Pei <andy.pei@intel.com>
> > ---
> >  drivers/vdpa/ifc/base/ifcvf.c | 36
> > +++++++++++++++++++++++++++++-------
> >  drivers/vdpa/ifc/base/ifcvf.h |  1 +
> >  2 files changed, 30 insertions(+), 7 deletions(-)
> >
> > diff --git a/drivers/vdpa/ifc/base/ifcvf.c
> > b/drivers/vdpa/ifc/base/ifcvf.c index d10c1fd..4d5881a 100644
> > --- a/drivers/vdpa/ifc/base/ifcvf.c
> > +++ b/drivers/vdpa/ifc/base/ifcvf.c
> > @@ -218,10 +218,18 @@
> >  				&cfg->queue_used_hi);
> >  		IFCVF_WRITE_REG16(hw->vring[i].size, &cfg->queue_size);
> >
> > -		*(u32 *)(lm_cfg + IFCVF_LM_RING_STATE_OFFSET +
> > -				(i / 2) * IFCVF_LM_CFG_SIZE + (i % 2) * 4) =
> > -			(u32)hw->vring[i].last_avail_idx |
> > -			((u32)hw->vring[i].last_used_idx << 16);
> > +		if (hw->is_blk == IFCVF_BLK) {
> > +			*(u32 *)(lm_cfg + IFCVF_LM_RING_STATE_OFFSET +
> > +				i * IFCVF_LM_CFG_SIZE) =
> > +				(u32)hw->vring[i].last_avail_idx |
> > +				((u32)hw->vring[i].last_used_idx << 16);
> > +		} else if (hw->is_blk == IFCVF_NET) {
> > +			*(u32 *)(lm_cfg + IFCVF_LM_RING_STATE_OFFSET +
> > +				(i / 2) * IFCVF_LM_CFG_SIZE +
> > +				(i % 2) * 4) =
> > +				(u32)hw->vring[i].last_avail_idx |
> > +				((u32)hw->vring[i].last_used_idx << 16);
> > +		}
> >
> >  		IFCVF_WRITE_REG16(i + 1, &cfg->queue_msix_vector);
> >  		if (IFCVF_READ_REG16(&cfg->queue_msix_vector) == @@ -
> 254,9 +262,23
> > @@
> >  		IFCVF_WRITE_REG16(i, &cfg->queue_select);
> >  		IFCVF_WRITE_REG16(0, &cfg->queue_enable);
> >  		IFCVF_WRITE_REG16(IFCVF_MSI_NO_VECTOR, &cfg-
> > >queue_msix_vector);
> > -		ring_state = *(u32 *)(hw->lm_cfg +
> IFCVF_LM_RING_STATE_OFFSET
> > +
> > -				(i / 2) * IFCVF_LM_CFG_SIZE + (i % 2) * 4);
> > -		hw->vring[i].last_avail_idx = (u16)(ring_state >> 16);
> > +
> > +		if (hw->is_blk) {
> > +			ring_state = *(u32 *)(hw->lm_cfg +
> > +					IFCVF_LM_RING_STATE_OFFSET +
> > +					i * IFCVF_LM_CFG_SIZE);
> > +		} else if (hw->is_blk == IFCVF_NET) {
> > +			ring_state = *(u32 *)(hw->lm_cfg +
> > +					IFCVF_LM_RING_STATE_OFFSET +
> > +					(i / 2) * IFCVF_LM_CFG_SIZE +
> > +					(i % 2) * 4);
> > +		}
> > +
> > +		if (hw->is_blk == IFCVF_BLK)
> > +			hw->vring[i].last_avail_idx =
> > +				(u16)(ring_state & IFCVF_16_BIT_MASK);
> > +		else if (hw->is_blk == IFCVF_NET)
> > +			hw->vring[i].last_avail_idx = (u16)(ring_state >> 16);
> >  		hw->vring[i].last_used_idx = (u16)(ring_state >> 16);
> >  	}
> >  }
> > diff --git a/drivers/vdpa/ifc/base/ifcvf.h
> > b/drivers/vdpa/ifc/base/ifcvf.h index 8591ef1..ff11b12 100644
> > --- a/drivers/vdpa/ifc/base/ifcvf.h
> > +++ b/drivers/vdpa/ifc/base/ifcvf.h
> > @@ -65,6 +65,7 @@
> >  #define IFCVF_MEDIATED_VRING		0x200000000000
> >
> >  #define IFCVF_32_BIT_MASK		0xffffffff
> > +#define IFCVF_16_BIT_MASK		0xffff
> >
> >  #ifndef VHOST_USER_PROTOCOL_F_CONFIG
> >  #define VHOST_USER_PROTOCOL_F_CONFIG	9
> > --
> > 1.8.3.1
>
diff mbox series

Patch

diff --git a/drivers/vdpa/ifc/base/ifcvf.c b/drivers/vdpa/ifc/base/ifcvf.c
index d10c1fd..4d5881a 100644
--- a/drivers/vdpa/ifc/base/ifcvf.c
+++ b/drivers/vdpa/ifc/base/ifcvf.c
@@ -218,10 +218,18 @@ 
 				&cfg->queue_used_hi);
 		IFCVF_WRITE_REG16(hw->vring[i].size, &cfg->queue_size);
 
-		*(u32 *)(lm_cfg + IFCVF_LM_RING_STATE_OFFSET +
-				(i / 2) * IFCVF_LM_CFG_SIZE + (i % 2) * 4) =
-			(u32)hw->vring[i].last_avail_idx |
-			((u32)hw->vring[i].last_used_idx << 16);
+		if (hw->is_blk == IFCVF_BLK) {
+			*(u32 *)(lm_cfg + IFCVF_LM_RING_STATE_OFFSET +
+				i * IFCVF_LM_CFG_SIZE) =
+				(u32)hw->vring[i].last_avail_idx |
+				((u32)hw->vring[i].last_used_idx << 16);
+		} else if (hw->is_blk == IFCVF_NET) {
+			*(u32 *)(lm_cfg + IFCVF_LM_RING_STATE_OFFSET +
+				(i / 2) * IFCVF_LM_CFG_SIZE +
+				(i % 2) * 4) =
+				(u32)hw->vring[i].last_avail_idx |
+				((u32)hw->vring[i].last_used_idx << 16);
+		}
 
 		IFCVF_WRITE_REG16(i + 1, &cfg->queue_msix_vector);
 		if (IFCVF_READ_REG16(&cfg->queue_msix_vector) ==
@@ -254,9 +262,23 @@ 
 		IFCVF_WRITE_REG16(i, &cfg->queue_select);
 		IFCVF_WRITE_REG16(0, &cfg->queue_enable);
 		IFCVF_WRITE_REG16(IFCVF_MSI_NO_VECTOR, &cfg->queue_msix_vector);
-		ring_state = *(u32 *)(hw->lm_cfg + IFCVF_LM_RING_STATE_OFFSET +
-				(i / 2) * IFCVF_LM_CFG_SIZE + (i % 2) * 4);
-		hw->vring[i].last_avail_idx = (u16)(ring_state >> 16);
+
+		if (hw->is_blk) {
+			ring_state = *(u32 *)(hw->lm_cfg +
+					IFCVF_LM_RING_STATE_OFFSET +
+					i * IFCVF_LM_CFG_SIZE);
+		} else if (hw->is_blk == IFCVF_NET) {
+			ring_state = *(u32 *)(hw->lm_cfg +
+					IFCVF_LM_RING_STATE_OFFSET +
+					(i / 2) * IFCVF_LM_CFG_SIZE +
+					(i % 2) * 4);
+		}
+
+		if (hw->is_blk == IFCVF_BLK)
+			hw->vring[i].last_avail_idx =
+				(u16)(ring_state & IFCVF_16_BIT_MASK);
+		else if (hw->is_blk == IFCVF_NET)
+			hw->vring[i].last_avail_idx = (u16)(ring_state >> 16);
 		hw->vring[i].last_used_idx = (u16)(ring_state >> 16);
 	}
 }
diff --git a/drivers/vdpa/ifc/base/ifcvf.h b/drivers/vdpa/ifc/base/ifcvf.h
index 8591ef1..ff11b12 100644
--- a/drivers/vdpa/ifc/base/ifcvf.h
+++ b/drivers/vdpa/ifc/base/ifcvf.h
@@ -65,6 +65,7 @@ 
 #define IFCVF_MEDIATED_VRING		0x200000000000
 
 #define IFCVF_32_BIT_MASK		0xffffffff
+#define IFCVF_16_BIT_MASK		0xffff
 
 #ifndef VHOST_USER_PROTOCOL_F_CONFIG
 #define VHOST_USER_PROTOCOL_F_CONFIG	9