[SCSI] bfa: Fix to allow creation of only 190 vports on CNA.

Brocade CNA currently supports only 190 vports (instead of 191),
since there are only 192 unicast cam entries reserved for FCoE.

Brocade CNA has a total of 256 unicast cam entries (192 FCoE + 64 LL)

192 cam entries = 1 burned in mac + 1 baseport FPMA mac + 190 vport
FPMA macs.

Made changes to the code to support only 190 vports.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/scsi/bfa/bfa_lps.c b/drivers/scsi/bfa/bfa_lps.c
index c8c2564af72..66b9b15f429 100644
--- a/drivers/scsi/bfa/bfa_lps.c
+++ b/drivers/scsi/bfa/bfa_lps.c
@@ -18,6 +18,7 @@
 #include <bfa.h>
 #include <bfi/bfi_lps.h>
 #include <cs/bfa_debug.h>
+#include <defs/bfa_defs_pci.h>
 
 BFA_TRC_FILE(HAL, LPS);
 BFA_MODULE(lps);
@@ -25,6 +26,12 @@ BFA_MODULE(lps);
 #define BFA_LPS_MIN_LPORTS      (1)
 #define BFA_LPS_MAX_LPORTS      (256)
 
+/*
+ * Maximum Vports supported per physical port or vf.
+ */
+#define BFA_LPS_MAX_VPORTS_SUPP_CB  255
+#define BFA_LPS_MAX_VPORTS_SUPP_CT  190
+
 /**
  * forward declarations
  */
@@ -598,6 +605,19 @@ bfa_lps_cvl_event(struct bfa_lps_s *lps)
                 bfa_cb_lps_cvl_event(lps->bfa->bfad, lps->uarg);
 }
 
+u32
+bfa_lps_get_max_vport(struct bfa_s *bfa)
+{
+        struct bfa_ioc_attr_s ioc_attr;
+
+        bfa_get_attr(bfa, &ioc_attr);
+
+        if (ioc_attr.pci_attr.device_id == BFA_PCI_DEVICE_ID_CT)
+                return (BFA_LPS_MAX_VPORTS_SUPP_CT);
+        else
+                return (BFA_LPS_MAX_VPORTS_SUPP_CB);
+}
+
 /**
  *  lps_public BFA LPS public functions
  */