diff options
Diffstat (limited to 'drivers/ntb/test/ntb_pingpong.c')
| -rw-r--r-- | drivers/ntb/test/ntb_pingpong.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/ntb/test/ntb_pingpong.c b/drivers/ntb/test/ntb_pingpong.c index 435861189d97..938a18bcfc3f 100644 --- a/drivers/ntb/test/ntb_pingpong.c +++ b/drivers/ntb/test/ntb_pingpong.c @@ -90,6 +90,9 @@ static unsigned long db_init = 0x7; module_param(db_init, ulong, 0644); MODULE_PARM_DESC(db_init, "Initial doorbell bits to ring on the peer"); +/* Only two-ports NTB devices are supported */ +#define PIDX NTB_DEF_PEER_IDX + struct pp_ctx { struct ntb_dev *ntb; u64 db_bits; @@ -135,7 +138,7 @@ static void pp_ping(unsigned long ctx) "Ping bits %#llx read %#x write %#x\n", db_bits, spad_rd, spad_wr); - ntb_peer_spad_write(pp->ntb, 0, spad_wr); + ntb_peer_spad_write(pp->ntb, PIDX, 0, spad_wr); ntb_peer_db_set(pp->ntb, db_bits); ntb_db_clear_mask(pp->ntb, db_mask); @@ -222,6 +225,12 @@ static int pp_probe(struct ntb_client *client, } } + if (ntb_spad_count(ntb) < 1) { + dev_dbg(&ntb->dev, "no enough scratchpads\n"); + rc = -EINVAL; + goto err_pp; + } + if (ntb_spad_is_unsafe(ntb)) { dev_dbg(&ntb->dev, "scratchpad is unsafe\n"); if (!unsafe) { @@ -230,6 +239,9 @@ static int pp_probe(struct ntb_client *client, } } + if (ntb_peer_port_count(ntb) != NTB_DEF_PEER_CNT) + dev_warn(&ntb->dev, "multi-port NTB is unsupported\n"); + pp = kmalloc(sizeof(*pp), GFP_KERNEL); if (!pp) { rc = -ENOMEM; |