[RFC PATCH 08/13] switchtec_ntb: add skeleton ntb driver

[Logan Gunthorpe]

This patch simply adds a skeleton NTB driver which will be filled
out in subsequent patches.

Signed-off-by: Logan Gunthorpe 
Reviewed-by: Stephen Bates 
Reviewed-by: Kurt Schwemmer 
---
 drivers/ntb/hw/mscc/switchtec_ntb.c | 134 +++-
 include/linux/ntb.h |   3 +
 2 files changed, 136 insertions(+), 1 deletion(-)

diff --git a/drivers/ntb/hw/mscc/switchtec_ntb.c 
b/drivers/ntb/hw/mscc/switchtec_ntb.c
index 6c9b4e337cdf..dadbf3c38d0e 100644
--- a/drivers/ntb/hw/mscc/switchtec_ntb.c
+++ b/drivers/ntb/hw/mscc/switchtec_ntb.c
@@ -17,6 +17,7 @@
 #include 
 #include 
 #include 
+#include 
 
 MODULE_DESCRIPTION("Microsemi Switchtec(tm) NTB Driver");
 MODULE_VERSION("0.1");
@@ -63,6 +64,7 @@ struct shared_mw {
 #define LUT_SIZE SZ_64K
 
 struct switchtec_ntb {
+   struct ntb_dev ntb;
struct switchtec_dev *stdev;
 
int self_partition;
@@ -145,10 +147,134 @@ static int switchtec_ntb_part_op(struct switchtec_ntb 
*sndev,
return -EIO;
 }
 
+static int switchtec_ntb_mw_count(struct ntb_dev *ntb)
+{
+   return 0;
+}
+
+static int switchtec_ntb_mw_get_range(struct ntb_dev *ntb, int idx,
+ phys_addr_t *base,
+ resource_size_t *size,
+ resource_size_t *align,
+ resource_size_t *align_size)
+{
+   return 0;
+}
+
+static int switchtec_ntb_mw_set_trans(struct ntb_dev *ntb, int idx,
+ dma_addr_t addr, resource_size_t size)
+{
+   return 0;
+}
+
+static int switchtec_ntb_link_is_up(struct ntb_dev *ntb,
+   enum ntb_speed *speed,
+   enum ntb_width *width)
+{
+   return 0;
+}
+
+static int switchtec_ntb_link_enable(struct ntb_dev *ntb,
+enum ntb_speed max_speed,
+enum ntb_width max_width)
+{
+   return 0;
+}
+
+static int switchtec_ntb_link_disable(struct ntb_dev *ntb)
+{
+   return 0;
+}
+
+static u64 switchtec_ntb_db_valid_mask(struct ntb_dev *ntb)
+{
+   return 0;
+}
+
+static int switchtec_ntb_db_vector_count(struct ntb_dev *ntb)
+{
+   return 0;
+}
+
+static u64 switchtec_ntb_db_vector_mask(struct ntb_dev *ntb, int db_vector)
+{
+   return 0;
+}
+
+static u64 switchtec_ntb_db_read(struct ntb_dev *ntb)
+{
+   return 0;
+}
+
+static int switchtec_ntb_db_clear(struct ntb_dev *ntb, u64 db_bits)
+{
+   return 0;
+}
+
+static int switchtec_ntb_db_set_mask(struct ntb_dev *ntb, u64 db_bits)
+{
+   return 0;
+}
+
+static int switchtec_ntb_db_clear_mask(struct ntb_dev *ntb, u64 db_bits)
+{
+   return 0;
+}
+
+static int switchtec_ntb_peer_db_set(struct ntb_dev *ntb, u64 db_bits)
+{
+   return 0;
+}
+
+static int switchtec_ntb_spad_count(struct ntb_dev *ntb)
+{
+   return 0;
+}
+
+static u32 switchtec_ntb_spad_read(struct ntb_dev *ntb, int idx)
+{
+   return 0;
+}
+
+static int switchtec_ntb_spad_write(struct ntb_dev *ntb, int idx, u32 val)
+{
+   return 0;
+}
+
+static int switchtec_ntb_peer_spad_write(struct ntb_dev *ntb, int idx, u32 val)
+{
+   return 0;
+}
+
+static const struct ntb_dev_ops switchtec_ntb_ops = {
+   .mw_count   = switchtec_ntb_mw_count,
+   .mw_get_range   = switchtec_ntb_mw_get_range,
+   .mw_set_trans   = switchtec_ntb_mw_set_trans,
+   .link_is_up = switchtec_ntb_link_is_up,
+   .link_enable= switchtec_ntb_link_enable,
+   .link_disable   = switchtec_ntb_link_disable,
+   .db_valid_mask  = switchtec_ntb_db_valid_mask,
+   .db_vector_count= switchtec_ntb_db_vector_count,
+   .db_vector_mask = switchtec_ntb_db_vector_mask,
+   .db_read= switchtec_ntb_db_read,
+   .db_clear   = switchtec_ntb_db_clear,
+   .db_set_mask= switchtec_ntb_db_set_mask,
+   .db_clear_mask  = switchtec_ntb_db_clear_mask,
+   .peer_db_set= switchtec_ntb_peer_db_set,
+   .spad_count = switchtec_ntb_spad_count,
+   .spad_read  = switchtec_ntb_spad_read,
+   .spad_write = switchtec_ntb_spad_write,
+   .peer_spad_write= switchtec_ntb_peer_spad_write,
+};
+
 static void switchtec_ntb_init_sndev(struct switchtec_ntb *sndev)
 {
u64 part_map;
 
+   sndev->ntb.pdev = sndev->stdev->pdev;
+   sndev->ntb.topo = NTB_TOPO_SWITCH;
+   sndev->ntb.ops = _ntb_ops;
+
sndev->self_partition = sndev->stdev->partition;
 
sndev->mmio_ntb = sndev->stdev->mmio_ntb;
@@ -453,7 +579,6 @@ static int switchtec_ntb_add(struct device *dev,
return -ENOMEM;
 
sndev->stdev = stdev;
-
switchtec_ntb_init_sndev(sndev);

[RFC PATCH 08/13] switchtec_ntb: add skeleton ntb driver

[Logan Gunthorpe]

This patch simply adds a skeleton NTB driver which will be filled
out in subsequent patches.

Signed-off-by: Logan Gunthorpe 
Reviewed-by: Stephen Bates 
Reviewed-by: Kurt Schwemmer 
---
 drivers/ntb/hw/mscc/switchtec_ntb.c | 134 +++-
 include/linux/ntb.h |   3 +
 2 files changed, 136 insertions(+), 1 deletion(-)

diff --git a/drivers/ntb/hw/mscc/switchtec_ntb.c 
b/drivers/ntb/hw/mscc/switchtec_ntb.c
index 6c9b4e337cdf..dadbf3c38d0e 100644
--- a/drivers/ntb/hw/mscc/switchtec_ntb.c
+++ b/drivers/ntb/hw/mscc/switchtec_ntb.c
@@ -17,6 +17,7 @@
 #include 
 #include 
 #include 
+#include 
 
 MODULE_DESCRIPTION("Microsemi Switchtec(tm) NTB Driver");
 MODULE_VERSION("0.1");
@@ -63,6 +64,7 @@ struct shared_mw {
 #define LUT_SIZE SZ_64K
 
 struct switchtec_ntb {
+   struct ntb_dev ntb;
struct switchtec_dev *stdev;
 
int self_partition;
@@ -145,10 +147,134 @@ static int switchtec_ntb_part_op(struct switchtec_ntb 
*sndev,
return -EIO;
 }
 
+static int switchtec_ntb_mw_count(struct ntb_dev *ntb)
+{
+   return 0;
+}
+
+static int switchtec_ntb_mw_get_range(struct ntb_dev *ntb, int idx,
+ phys_addr_t *base,
+ resource_size_t *size,
+ resource_size_t *align,
+ resource_size_t *align_size)
+{
+   return 0;
+}
+
+static int switchtec_ntb_mw_set_trans(struct ntb_dev *ntb, int idx,
+ dma_addr_t addr, resource_size_t size)
+{
+   return 0;
+}
+
+static int switchtec_ntb_link_is_up(struct ntb_dev *ntb,
+   enum ntb_speed *speed,
+   enum ntb_width *width)
+{
+   return 0;
+}
+
+static int switchtec_ntb_link_enable(struct ntb_dev *ntb,
+enum ntb_speed max_speed,
+enum ntb_width max_width)
+{
+   return 0;
+}
+
+static int switchtec_ntb_link_disable(struct ntb_dev *ntb)
+{
+   return 0;
+}
+
+static u64 switchtec_ntb_db_valid_mask(struct ntb_dev *ntb)
+{
+   return 0;
+}
+
+static int switchtec_ntb_db_vector_count(struct ntb_dev *ntb)
+{
+   return 0;
+}
+
+static u64 switchtec_ntb_db_vector_mask(struct ntb_dev *ntb, int db_vector)
+{
+   return 0;
+}
+
+static u64 switchtec_ntb_db_read(struct ntb_dev *ntb)
+{
+   return 0;
+}
+
+static int switchtec_ntb_db_clear(struct ntb_dev *ntb, u64 db_bits)
+{
+   return 0;
+}
+
+static int switchtec_ntb_db_set_mask(struct ntb_dev *ntb, u64 db_bits)
+{
+   return 0;
+}
+
+static int switchtec_ntb_db_clear_mask(struct ntb_dev *ntb, u64 db_bits)
+{
+   return 0;
+}
+
+static int switchtec_ntb_peer_db_set(struct ntb_dev *ntb, u64 db_bits)
+{
+   return 0;
+}
+
+static int switchtec_ntb_spad_count(struct ntb_dev *ntb)
+{
+   return 0;
+}
+
+static u32 switchtec_ntb_spad_read(struct ntb_dev *ntb, int idx)
+{
+   return 0;
+}
+
+static int switchtec_ntb_spad_write(struct ntb_dev *ntb, int idx, u32 val)
+{
+   return 0;
+}
+
+static int switchtec_ntb_peer_spad_write(struct ntb_dev *ntb, int idx, u32 val)
+{
+   return 0;
+}
+
+static const struct ntb_dev_ops switchtec_ntb_ops = {
+   .mw_count   = switchtec_ntb_mw_count,
+   .mw_get_range   = switchtec_ntb_mw_get_range,
+   .mw_set_trans   = switchtec_ntb_mw_set_trans,
+   .link_is_up = switchtec_ntb_link_is_up,
+   .link_enable= switchtec_ntb_link_enable,
+   .link_disable   = switchtec_ntb_link_disable,
+   .db_valid_mask  = switchtec_ntb_db_valid_mask,
+   .db_vector_count= switchtec_ntb_db_vector_count,
+   .db_vector_mask = switchtec_ntb_db_vector_mask,
+   .db_read= switchtec_ntb_db_read,
+   .db_clear   = switchtec_ntb_db_clear,
+   .db_set_mask= switchtec_ntb_db_set_mask,
+   .db_clear_mask  = switchtec_ntb_db_clear_mask,
+   .peer_db_set= switchtec_ntb_peer_db_set,
+   .spad_count = switchtec_ntb_spad_count,
+   .spad_read  = switchtec_ntb_spad_read,
+   .spad_write = switchtec_ntb_spad_write,
+   .peer_spad_write= switchtec_ntb_peer_spad_write,
+};
+
 static void switchtec_ntb_init_sndev(struct switchtec_ntb *sndev)
 {
u64 part_map;
 
+   sndev->ntb.pdev = sndev->stdev->pdev;
+   sndev->ntb.topo = NTB_TOPO_SWITCH;
+   sndev->ntb.ops = _ntb_ops;
+
sndev->self_partition = sndev->stdev->partition;
 
sndev->mmio_ntb = sndev->stdev->mmio_ntb;
@@ -453,7 +579,6 @@ static int switchtec_ntb_add(struct device *dev,
return -ENOMEM;
 
sndev->stdev = stdev;
-
switchtec_ntb_init_sndev(sndev);
switchtec_ntb_init_mw(sndev);
switchtec_ntb_init_db(sndev);
@@