[SCSI] bfa: DMA memory allocation enhancement.

- Modified the design such that each BFA sub-module will provide
  the amount of DMA and KVA memory needed by it and queues the
  same request to the global dma and kva info queues.
- During the memory allocation we iterate over this queue to allocate
  the dma and kva memory requested by sub-modules.
- The change is needed to avoid requesting the aggregate amount of memory
  needed by all the BFA sub-modules as one contiguous chunk.

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

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/scsi/bfa/bfa_port.h b/drivers/scsi/bfa/bfa_port.h
index 1587a6f08b26..b8bdc54aaeb4 100644
--- a/drivers/scsi/bfa/bfa_port.h
+++ b/drivers/scsi/bfa/bfa_port.h
@@ -45,8 +45,11 @@ struct bfa_port_s {
 	bfa_status_t			endis_status;
 	struct bfa_ioc_notify_s		ioc_notify;
 	bfa_boolean_t			pbc_disabled;
+	struct bfa_mem_dma_s		port_dma;
 };
 
+#define BFA_MEM_PORT_DMA(__bfa)		(&((__bfa)->modules.port.port_dma))
+
 void	     bfa_port_attach(struct bfa_port_s *port, struct bfa_ioc_s *ioc,
 				void *dev, struct bfa_trc_mod_s *trcmod);
 void	bfa_port_notify(void *arg, enum bfa_ioc_event_e event);