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[SCSI] bfa: Introduced generic address len pair to represent DMA memory chunk.

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- Avoid the use of hardware defined structure bfi_sge_s for DMA
  requests in host.

- Defined a generic address len pair to represent a DMA memory chunk
  (bfi_alen_s).

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Krishna Gudipati
2011-06-13 15:39:36 -07:00
committed by James Bottomley
parent 4d08e731bd
commit 85ce928dbb
4 changed files with 32 additions and 59 deletions
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22
drivers/scsi/bfa/bfa_ioc.h
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@@ -112,18 +112,6 @@ struct bfa_dma_s {
#define BFI_SMEM_CB_SIZE 0x200000U /* ! 2MB for crossbow */
#define BFI_SMEM_CT_SIZE 0x280000U /* ! 2.5MB for catapult */
#define bfa_dma_addr_set(dma_addr, pa) \
__bfa_dma_addr_set(&dma_addr, (u64)pa)
static inline void
__bfa_dma_addr_set(union bfi_addr_u *dma_addr, u64 pa)
{
dma_addr->a32.addr_lo = (__be32) pa;
dma_addr->a32.addr_hi = (__be32) (pa >> 32);
}
#define bfa_dma_be_addr_set(dma_addr, pa) \
__bfa_dma_be_addr_set(&dma_addr, (u64)pa)
static inline void
@@ -133,6 +121,16 @@ __bfa_dma_be_addr_set(union bfi_addr_u *dma_addr, u64 pa)
dma_addr->a32.addr_hi = cpu_to_be32(pa >> 32);
}
#define bfa_alen_set(__alen, __len, __pa) \
__bfa_alen_set(__alen, __len, (u64)__pa)
static inline void
__bfa_alen_set(struct bfi_alen_s *alen, u32 len, u64 pa)
{
alen->al_len = cpu_to_be32(len);
bfa_dma_be_addr_set(alen->al_addr, pa);
}
struct bfa_ioc_regs_s {
void __iomem *hfn_mbox_cmd;
void __iomem *hfn_mbox;