[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>
diff --git a/drivers/scsi/bfa/bfi_ms.h b/drivers/scsi/bfa/bfi_ms.h
index 0727c75..0d9f1fb 100644
--- a/drivers/scsi/bfa/bfi_ms.h
+++ b/drivers/scsi/bfa/bfi_ms.h
@@ -46,10 +46,12 @@
u8 sense_buf_len; /* SCSI sense length */
u16 rsvd_1;
u32 endian_sig; /* endian signature of host */
+ u8 rsvd_2;
+ u8 single_msix_vec;
+ u8 rsvd[2];
__be16 num_ioim_reqs;
__be16 num_fwtio_reqs;
- u8 single_msix_vec;
- u8 rsvd[3];
+
/*
* Request and response circular queue base addresses, size and
@@ -64,7 +66,8 @@
union bfi_addr_u stats_addr; /* DMA-able address for stats */
union bfi_addr_u cfgrsp_addr; /* config response dma address */
- union bfi_addr_u ioim_snsbase; /* IO sense buffer base address */
+ union bfi_addr_u ioim_snsbase[BFI_IOIM_SNSBUF_SEGS];
+ /* IO sense buf base addr segments */
struct bfa_iocfc_intr_attr_s intr_attr; /* IOC interrupt attributes */
};
@@ -753,7 +756,6 @@
BFI_IOIM_STS_PATHTOV = 8,
};
-#define BFI_IOIM_SNSLEN (256)
/*
* I/O response message
*/