subject:"\[PATCH v2 2\/9\] NTB\: Add indexed ports NTB API"

RE: [PATCH v2 2/9] NTB: Add indexed ports NTB API

2016-12-12 Thread Allen Hubbe

From: Serge Semin 
> There are some NTB hardware, which can combine more than just two domains
> over NTB. For instance, some IDT PCIe-switches can have NTB-functions
> activated on more than two-ports. The different domains are distinguished
> by ports they are connected to. So the new port-related methods are added to
> the NTB API:
>  ntb_port_number() - return local port
>  ntb_peer_port_count() - return number of peers local port can connect to
>  ntb_peer_port_number(pdix) - return port number by it index
>  ntb_peer_port_idx(port) - return port index by it number
> 
> Current test-drivers aren't changed much. They still support two-ports devices
> for the time being while multi-ports hardware drivers aren't added.
> 

The port methods are the same for PRI/SEC drivers.  Rather than duplicating the 
code, multiport could be made optional in the api, and default implementations 
provided by ntb common code.

Some comments below.

> Signed-off-by: Serge Semin 
> 
> ---
>  drivers/ntb/hw/amd/ntb_hw_amd.c | 47 
>  drivers/ntb/hw/amd/ntb_hw_amd.h |  9 +
>  drivers/ntb/hw/intel/ntb_hw_intel.c | 52 ++-
>  drivers/ntb/hw/intel/ntb_hw_intel.h |  9 +
>  drivers/ntb/ntb_transport.c |  6 
>  drivers/ntb/test/ntb_perf.c |  4 +++
>  drivers/ntb/test/ntb_pingpong.c |  6 
>  drivers/ntb/test/ntb_tool.c |  5 +++
>  include/linux/ntb.h | 71 
> +
>  9 files changed, 208 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.c b/drivers/ntb/hw/amd/ntb_hw_amd.c
> index 6704327..0b767ef 100644
> --- a/drivers/ntb/hw/amd/ntb_hw_amd.c
> +++ b/drivers/ntb/hw/amd/ntb_hw_amd.c
> @@ -71,6 +71,49 @@ MODULE_AUTHOR("AMD Inc.");
>  static const struct file_operations amd_ntb_debugfs_info;
>  static struct dentry *debugfs_dir;
> 
> +static int amd_ntb_port_number(struct ntb_dev *ntb)
> +{
> + switch (ntb->topo) {
> + case NTB_TOPO_PRI:
> + case NTB_TOPO_B2B_USD:
> + return NTB_PORT_PRI_USD;
> + case NTB_TOPO_SEC:
> + case NTB_TOPO_B2B_DSD:
> + return NTB_PORT_SEC_DSD;
> + default:
> + break;
> + }
> +
> + return -EINVAL;
> +}
> +
> +static int amd_ntb_peer_port_count(struct ntb_dev *ntb)
> +{
> + return NTB_PEER_CNT;
> +}
> +
> +static int amd_ntb_peer_port_number(struct ntb_dev *ntb, int pidx)
> +{
> + int local_port = amd_ntb_port_number(ntb);
> +
> + if (pidx > NTB_PIDX_MAX)
> + return -EINVAL;

pidx may be negative.

> +
> + return (local_port == NTB_PORT_PRI_USD ?
> + NTB_PORT_SEC_DSD : NTB_PORT_PRI_USD);

local_port may be -EINVAL.

It may be simpler to have the same switch statement here as in 
amd_ntb_port_number(), with the return statements swapped.

> +}
> +
> +static int amd_ntb_peer_port_idx(struct ntb_dev *ntb, int port)
> +{
> + int local_port = amd_ntb_port_number(ntb);
> +
> + if ((local_port == NTB_PORT_PRI_USD && port != NTB_PORT_SEC_DSD) ||
> + (local_port == NTB_PORT_SEC_DSD && port != NTB_PORT_PRI_USD))
> + return -EINVAL;
> +

How about:

peer_port = amd_ntb_peer_port_number(ntb, 0);

if (peer_port == -EINVAL || port != peer_port)
return -EINVAL;

return 0;

> + return 0;
> +}
> +
>  static int amd_link_is_up(struct amd_ntb_dev *ndev)
>  {
>   if (!ndev->peer_sta)
> @@ -431,6 +474,10 @@ static int amd_ntb_peer_spad_write(struct ntb_dev *ntb,
>  }
> 
>  static const struct ntb_dev_ops amd_ntb_ops = {
> + .port_number= amd_ntb_port_number,
> + .peer_port_count= amd_ntb_peer_port_count,
> + .peer_port_number   = amd_ntb_peer_port_number,
> + .peer_port_idx  = amd_ntb_peer_port_idx,
>   .link_is_up = amd_ntb_link_is_up,
>   .link_enable= amd_ntb_link_enable,
>   .link_disable   = amd_ntb_link_disable,
> diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.h b/drivers/ntb/hw/amd/ntb_hw_amd.h
> index 2eac3cd..1aeb08f 100644
> --- a/drivers/ntb/hw/amd/ntb_hw_amd.h
> +++ b/drivers/ntb/hw/amd/ntb_hw_amd.h
> @@ -62,6 +62,10 @@
>  #define NTB_LNK_STA_SPEED(x) (((x) & NTB_LNK_STA_SPEED_MASK) >> 16)
>  #define NTB_LNK_STA_WIDTH(x) (((x) & NTB_LNK_STA_WIDTH_MASK) >> 20)
> 
> +/* port related constants */
> +#define NTB_PEER_CNT (1)
> +#define NTB_PIDX_MAX (0)

Just NTB_PEER_CNT is sufficient.  Anything that checks if (pidx > NTB_PIDX_MAX) 
could check if (pidx >= NTB_PEER_CNT).

> +
>  #ifndef read64
>  #ifdef readq
>  #define read64 readq
> @@ -91,6 +95,11 @@ static inline void _write64(u64 val, void __iomem *mmio)
>  #endif
>  #endif
> 
> +enum amd_ntb_port {
> + NTB_PORT_PRI_USD,
> + NTB_PORT_SEC_DSD
> +};

This could be part of ntb.h, since it will likely be the same for any of the 
PRI/SEC variety of NTB devices.  Making it a part of the api will

RE: [PATCH v2 2/9] NTB: Add indexed ports NTB API

2016-12-12 Thread Allen Hubbe

From: Serge Semin 
> There are some NTB hardware, which can combine more than just two domains
> over NTB. For instance, some IDT PCIe-switches can have NTB-functions
> activated on more than two-ports. The different domains are distinguished
> by ports they are connected to. So the new port-related methods are added to
> the NTB API:
>  ntb_port_number() - return local port
>  ntb_peer_port_count() - return number of peers local port can connect to
>  ntb_peer_port_number(pdix) - return port number by it index
>  ntb_peer_port_idx(port) - return port index by it number
> 
> Current test-drivers aren't changed much. They still support two-ports devices
> for the time being while multi-ports hardware drivers aren't added.
> 

The port methods are the same for PRI/SEC drivers.  Rather than duplicating the 
code, multiport could be made optional in the api, and default implementations 
provided by ntb common code.

Some comments below.

> Signed-off-by: Serge Semin 
> 
> ---
>  drivers/ntb/hw/amd/ntb_hw_amd.c | 47 
>  drivers/ntb/hw/amd/ntb_hw_amd.h |  9 +
>  drivers/ntb/hw/intel/ntb_hw_intel.c | 52 ++-
>  drivers/ntb/hw/intel/ntb_hw_intel.h |  9 +
>  drivers/ntb/ntb_transport.c |  6 
>  drivers/ntb/test/ntb_perf.c |  4 +++
>  drivers/ntb/test/ntb_pingpong.c |  6 
>  drivers/ntb/test/ntb_tool.c |  5 +++
>  include/linux/ntb.h | 71 
> +
>  9 files changed, 208 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.c b/drivers/ntb/hw/amd/ntb_hw_amd.c
> index 6704327..0b767ef 100644
> --- a/drivers/ntb/hw/amd/ntb_hw_amd.c
> +++ b/drivers/ntb/hw/amd/ntb_hw_amd.c
> @@ -71,6 +71,49 @@ MODULE_AUTHOR("AMD Inc.");
>  static const struct file_operations amd_ntb_debugfs_info;
>  static struct dentry *debugfs_dir;
> 
> +static int amd_ntb_port_number(struct ntb_dev *ntb)
> +{
> + switch (ntb->topo) {
> + case NTB_TOPO_PRI:
> + case NTB_TOPO_B2B_USD:
> + return NTB_PORT_PRI_USD;
> + case NTB_TOPO_SEC:
> + case NTB_TOPO_B2B_DSD:
> + return NTB_PORT_SEC_DSD;
> + default:
> + break;
> + }
> +
> + return -EINVAL;
> +}
> +
> +static int amd_ntb_peer_port_count(struct ntb_dev *ntb)
> +{
> + return NTB_PEER_CNT;
> +}
> +
> +static int amd_ntb_peer_port_number(struct ntb_dev *ntb, int pidx)
> +{
> + int local_port = amd_ntb_port_number(ntb);
> +
> + if (pidx > NTB_PIDX_MAX)
> + return -EINVAL;

pidx may be negative.

> +
> + return (local_port == NTB_PORT_PRI_USD ?
> + NTB_PORT_SEC_DSD : NTB_PORT_PRI_USD);

local_port may be -EINVAL.

It may be simpler to have the same switch statement here as in 
amd_ntb_port_number(), with the return statements swapped.

> +}
> +
> +static int amd_ntb_peer_port_idx(struct ntb_dev *ntb, int port)
> +{
> + int local_port = amd_ntb_port_number(ntb);
> +
> + if ((local_port == NTB_PORT_PRI_USD && port != NTB_PORT_SEC_DSD) ||
> + (local_port == NTB_PORT_SEC_DSD && port != NTB_PORT_PRI_USD))
> + return -EINVAL;
> +

How about:

peer_port = amd_ntb_peer_port_number(ntb, 0);

if (peer_port == -EINVAL || port != peer_port)
return -EINVAL;

return 0;

> + return 0;
> +}
> +
>  static int amd_link_is_up(struct amd_ntb_dev *ndev)
>  {
>   if (!ndev->peer_sta)
> @@ -431,6 +474,10 @@ static int amd_ntb_peer_spad_write(struct ntb_dev *ntb,
>  }
> 
>  static const struct ntb_dev_ops amd_ntb_ops = {
> + .port_number= amd_ntb_port_number,
> + .peer_port_count= amd_ntb_peer_port_count,
> + .peer_port_number   = amd_ntb_peer_port_number,
> + .peer_port_idx  = amd_ntb_peer_port_idx,
>   .link_is_up = amd_ntb_link_is_up,
>   .link_enable= amd_ntb_link_enable,
>   .link_disable   = amd_ntb_link_disable,
> diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.h b/drivers/ntb/hw/amd/ntb_hw_amd.h
> index 2eac3cd..1aeb08f 100644
> --- a/drivers/ntb/hw/amd/ntb_hw_amd.h
> +++ b/drivers/ntb/hw/amd/ntb_hw_amd.h
> @@ -62,6 +62,10 @@
>  #define NTB_LNK_STA_SPEED(x) (((x) & NTB_LNK_STA_SPEED_MASK) >> 16)
>  #define NTB_LNK_STA_WIDTH(x) (((x) & NTB_LNK_STA_WIDTH_MASK) >> 20)
> 
> +/* port related constants */
> +#define NTB_PEER_CNT (1)
> +#define NTB_PIDX_MAX (0)

Just NTB_PEER_CNT is sufficient.  Anything that checks if (pidx > NTB_PIDX_MAX) 
could check if (pidx >= NTB_PEER_CNT).

> +
>  #ifndef read64
>  #ifdef readq
>  #define read64 readq
> @@ -91,6 +95,11 @@ static inline void _write64(u64 val, void __iomem *mmio)
>  #endif
>  #endif
> 
> +enum amd_ntb_port {
> + NTB_PORT_PRI_USD,
> + NTB_PORT_SEC_DSD
> +};

This could be part of ntb.h, since it will likely be the same for any of the 
PRI/SEC variety of NTB devices.  Making it a part of the api will encourage 
other PRI/SEC drivers

[PATCH v2 2/9] NTB: Add indexed ports NTB API

2016-12-12 Thread Serge Semin

There are some NTB hardware, which can combine more than just two domains
over NTB. For instance, some IDT PCIe-switches can have NTB-functions
activated on more than two-ports. The different domains are distinguished
by ports they are connected to. So the new port-related methods are added to
the NTB API:
 ntb_port_number() - return local port
 ntb_peer_port_count() - return number of peers local port can connect to
 ntb_peer_port_number(pdix) - return port number by it index
 ntb_peer_port_idx(port) - return port index by it number

Current test-drivers aren't changed much. They still support two-ports devices
for the time being while multi-ports hardware drivers aren't added.

Signed-off-by: Serge Semin 

---
 drivers/ntb/hw/amd/ntb_hw_amd.c | 47 
 drivers/ntb/hw/amd/ntb_hw_amd.h |  9 +
 drivers/ntb/hw/intel/ntb_hw_intel.c | 52 ++-
 drivers/ntb/hw/intel/ntb_hw_intel.h |  9 +
 drivers/ntb/ntb_transport.c |  6 
 drivers/ntb/test/ntb_perf.c |  4 +++
 drivers/ntb/test/ntb_pingpong.c |  6 
 drivers/ntb/test/ntb_tool.c |  5 +++
 include/linux/ntb.h | 71 +
 9 files changed, 208 insertions(+), 1 deletion(-)

diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.c b/drivers/ntb/hw/amd/ntb_hw_amd.c
index 6704327..0b767ef 100644
--- a/drivers/ntb/hw/amd/ntb_hw_amd.c
+++ b/drivers/ntb/hw/amd/ntb_hw_amd.c
@@ -71,6 +71,49 @@ MODULE_AUTHOR("AMD Inc.");
 static const struct file_operations amd_ntb_debugfs_info;
 static struct dentry *debugfs_dir;
 
+static int amd_ntb_port_number(struct ntb_dev *ntb)
+{
+   switch (ntb->topo) {
+   case NTB_TOPO_PRI:
+   case NTB_TOPO_B2B_USD:
+   return NTB_PORT_PRI_USD;
+   case NTB_TOPO_SEC:
+   case NTB_TOPO_B2B_DSD:
+   return NTB_PORT_SEC_DSD;
+   default:
+   break;
+   }
+
+   return -EINVAL;
+}
+
+static int amd_ntb_peer_port_count(struct ntb_dev *ntb)
+{
+   return NTB_PEER_CNT;
+}
+
+static int amd_ntb_peer_port_number(struct ntb_dev *ntb, int pidx)
+{
+   int local_port = amd_ntb_port_number(ntb);
+
+   if (pidx > NTB_PIDX_MAX)
+   return -EINVAL;
+
+   return (local_port == NTB_PORT_PRI_USD ?
+   NTB_PORT_SEC_DSD : NTB_PORT_PRI_USD);
+}
+
+static int amd_ntb_peer_port_idx(struct ntb_dev *ntb, int port)
+{
+   int local_port = amd_ntb_port_number(ntb);
+
+   if ((local_port == NTB_PORT_PRI_USD && port != NTB_PORT_SEC_DSD) ||
+   (local_port == NTB_PORT_SEC_DSD && port != NTB_PORT_PRI_USD))
+   return -EINVAL;
+
+   return 0;
+}
+
 static int amd_link_is_up(struct amd_ntb_dev *ndev)
 {
if (!ndev->peer_sta)
@@ -431,6 +474,10 @@ static int amd_ntb_peer_spad_write(struct ntb_dev *ntb,
 }
 
 static const struct ntb_dev_ops amd_ntb_ops = {
+   .port_number= amd_ntb_port_number,
+   .peer_port_count= amd_ntb_peer_port_count,
+   .peer_port_number   = amd_ntb_peer_port_number,
+   .peer_port_idx  = amd_ntb_peer_port_idx,
.link_is_up = amd_ntb_link_is_up,
.link_enable= amd_ntb_link_enable,
.link_disable   = amd_ntb_link_disable,
diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.h b/drivers/ntb/hw/amd/ntb_hw_amd.h
index 2eac3cd..1aeb08f 100644
--- a/drivers/ntb/hw/amd/ntb_hw_amd.h
+++ b/drivers/ntb/hw/amd/ntb_hw_amd.h
@@ -62,6 +62,10 @@
 #define NTB_LNK_STA_SPEED(x)   (((x) & NTB_LNK_STA_SPEED_MASK) >> 16)
 #define NTB_LNK_STA_WIDTH(x)   (((x) & NTB_LNK_STA_WIDTH_MASK) >> 20)
 
+/* port related constants */
+#define NTB_PEER_CNT   (1)
+#define NTB_PIDX_MAX   (0)
+
 #ifndef read64
 #ifdef readq
 #define read64 readq
@@ -91,6 +95,11 @@ static inline void _write64(u64 val, void __iomem *mmio)
 #endif
 #endif
 
+enum amd_ntb_port {
+   NTB_PORT_PRI_USD,
+   NTB_PORT_SEC_DSD
+};
+
 enum {
/* AMD NTB Capability */
AMD_MW_CNT  = 3,
diff --git a/drivers/ntb/hw/intel/ntb_hw_intel.c 
b/drivers/ntb/hw/intel/ntb_hw_intel.c
index 68d9908..7e44dc3 100644
--- a/drivers/ntb/hw/intel/ntb_hw_intel.c
+++ b/drivers/ntb/hw/intel/ntb_hw_intel.c
@@ -1035,6 +1035,49 @@ static void ndev_deinit_debugfs(struct intel_ntb_dev 
*ndev)
debugfs_remove_recursive(ndev->debugfs_dir);
 }
 
+static int intel_ntb_port_number(struct ntb_dev *ntb)
+{
+   switch (ntb->topo) {
+   case NTB_TOPO_PRI:
+   case NTB_TOPO_B2B_USD:
+   return NTB_PORT_PRI_USD;
+   case NTB_TOPO_SEC:
+   case NTB_TOPO_B2B_DSD:
+   return NTB_PORT_SEC_DSD;
+   default:
+   break;
+   }
+
+   return -EINVAL;
+}
+
+static int intel_ntb_peer_port_count(struct ntb_dev *ntb)
+{
+   return NTB_PEER_CNT;
+}
+
+static int intel_ntb_peer_port_number(struct ntb_dev *ntb, int pidx)
+{
+   int local_port =

[PATCH v2 2/9] NTB: Add indexed ports NTB API

2016-12-12 Thread Serge Semin

There are some NTB hardware, which can combine more than just two domains
over NTB. For instance, some IDT PCIe-switches can have NTB-functions
activated on more than two-ports. The different domains are distinguished
by ports they are connected to. So the new port-related methods are added to
the NTB API:
 ntb_port_number() - return local port
 ntb_peer_port_count() - return number of peers local port can connect to
 ntb_peer_port_number(pdix) - return port number by it index
 ntb_peer_port_idx(port) - return port index by it number

Current test-drivers aren't changed much. They still support two-ports devices
for the time being while multi-ports hardware drivers aren't added.

Signed-off-by: Serge Semin 

---
 drivers/ntb/hw/amd/ntb_hw_amd.c | 47 
 drivers/ntb/hw/amd/ntb_hw_amd.h |  9 +
 drivers/ntb/hw/intel/ntb_hw_intel.c | 52 ++-
 drivers/ntb/hw/intel/ntb_hw_intel.h |  9 +
 drivers/ntb/ntb_transport.c |  6 
 drivers/ntb/test/ntb_perf.c |  4 +++
 drivers/ntb/test/ntb_pingpong.c |  6 
 drivers/ntb/test/ntb_tool.c |  5 +++
 include/linux/ntb.h | 71 +
 9 files changed, 208 insertions(+), 1 deletion(-)

diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.c b/drivers/ntb/hw/amd/ntb_hw_amd.c
index 6704327..0b767ef 100644
--- a/drivers/ntb/hw/amd/ntb_hw_amd.c
+++ b/drivers/ntb/hw/amd/ntb_hw_amd.c
@@ -71,6 +71,49 @@ MODULE_AUTHOR("AMD Inc.");
 static const struct file_operations amd_ntb_debugfs_info;
 static struct dentry *debugfs_dir;
 
+static int amd_ntb_port_number(struct ntb_dev *ntb)
+{
+   switch (ntb->topo) {
+   case NTB_TOPO_PRI:
+   case NTB_TOPO_B2B_USD:
+   return NTB_PORT_PRI_USD;
+   case NTB_TOPO_SEC:
+   case NTB_TOPO_B2B_DSD:
+   return NTB_PORT_SEC_DSD;
+   default:
+   break;
+   }
+
+   return -EINVAL;
+}
+
+static int amd_ntb_peer_port_count(struct ntb_dev *ntb)
+{
+   return NTB_PEER_CNT;
+}
+
+static int amd_ntb_peer_port_number(struct ntb_dev *ntb, int pidx)
+{
+   int local_port = amd_ntb_port_number(ntb);
+
+   if (pidx > NTB_PIDX_MAX)
+   return -EINVAL;
+
+   return (local_port == NTB_PORT_PRI_USD ?
+   NTB_PORT_SEC_DSD : NTB_PORT_PRI_USD);
+}
+
+static int amd_ntb_peer_port_idx(struct ntb_dev *ntb, int port)
+{
+   int local_port = amd_ntb_port_number(ntb);
+
+   if ((local_port == NTB_PORT_PRI_USD && port != NTB_PORT_SEC_DSD) ||
+   (local_port == NTB_PORT_SEC_DSD && port != NTB_PORT_PRI_USD))
+   return -EINVAL;
+
+   return 0;
+}
+
 static int amd_link_is_up(struct amd_ntb_dev *ndev)
 {
if (!ndev->peer_sta)
@@ -431,6 +474,10 @@ static int amd_ntb_peer_spad_write(struct ntb_dev *ntb,
 }
 
 static const struct ntb_dev_ops amd_ntb_ops = {
+   .port_number= amd_ntb_port_number,
+   .peer_port_count= amd_ntb_peer_port_count,
+   .peer_port_number   = amd_ntb_peer_port_number,
+   .peer_port_idx  = amd_ntb_peer_port_idx,
.link_is_up = amd_ntb_link_is_up,
.link_enable= amd_ntb_link_enable,
.link_disable   = amd_ntb_link_disable,
diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.h b/drivers/ntb/hw/amd/ntb_hw_amd.h
index 2eac3cd..1aeb08f 100644
--- a/drivers/ntb/hw/amd/ntb_hw_amd.h
+++ b/drivers/ntb/hw/amd/ntb_hw_amd.h
@@ -62,6 +62,10 @@
 #define NTB_LNK_STA_SPEED(x)   (((x) & NTB_LNK_STA_SPEED_MASK) >> 16)
 #define NTB_LNK_STA_WIDTH(x)   (((x) & NTB_LNK_STA_WIDTH_MASK) >> 20)
 
+/* port related constants */
+#define NTB_PEER_CNT   (1)
+#define NTB_PIDX_MAX   (0)
+
 #ifndef read64
 #ifdef readq
 #define read64 readq
@@ -91,6 +95,11 @@ static inline void _write64(u64 val, void __iomem *mmio)
 #endif
 #endif
 
+enum amd_ntb_port {
+   NTB_PORT_PRI_USD,
+   NTB_PORT_SEC_DSD
+};
+
 enum {
/* AMD NTB Capability */
AMD_MW_CNT  = 3,
diff --git a/drivers/ntb/hw/intel/ntb_hw_intel.c 
b/drivers/ntb/hw/intel/ntb_hw_intel.c
index 68d9908..7e44dc3 100644
--- a/drivers/ntb/hw/intel/ntb_hw_intel.c
+++ b/drivers/ntb/hw/intel/ntb_hw_intel.c
@@ -1035,6 +1035,49 @@ static void ndev_deinit_debugfs(struct intel_ntb_dev 
*ndev)
debugfs_remove_recursive(ndev->debugfs_dir);
 }
 
+static int intel_ntb_port_number(struct ntb_dev *ntb)
+{
+   switch (ntb->topo) {
+   case NTB_TOPO_PRI:
+   case NTB_TOPO_B2B_USD:
+   return NTB_PORT_PRI_USD;
+   case NTB_TOPO_SEC:
+   case NTB_TOPO_B2B_DSD:
+   return NTB_PORT_SEC_DSD;
+   default:
+   break;
+   }
+
+   return -EINVAL;
+}
+
+static int intel_ntb_peer_port_count(struct ntb_dev *ntb)
+{
+   return NTB_PEER_CNT;
+}
+
+static int intel_ntb_peer_port_number(struct ntb_dev *ntb, int pidx)
+{
+   int local_port =

RE: [PATCH v2 2/9] NTB: Add indexed ports NTB API

RE: [PATCH v2 2/9] NTB: Add indexed ports NTB API

[PATCH v2 2/9] NTB: Add indexed ports NTB API

[PATCH v2 2/9] NTB: Add indexed ports NTB API

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