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authorKrishna Gudipati <kgudipat@brocade.com>2011-06-24 20:24:29 -0700
committerJames Bottomley <JBottomley@Parallels.com>2011-06-29 17:11:09 -0500
commit4507025d01149aea8705e43508d0ef11e7010cfd (patch)
tree937fefad76c8534bd42e0d1e46659db61ea57288 /drivers/scsi/bfa/bfa_svc.h
parent3fd459804ff8e002db2671900debd0fc6dc6c443 (diff)
[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>
Diffstat (limited to 'drivers/scsi/bfa/bfa_svc.h')
-rw-r--r--drivers/scsi/bfa/bfa_svc.h75
1 files changed, 48 insertions, 27 deletions
diff --git a/drivers/scsi/bfa/bfa_svc.h b/drivers/scsi/bfa/bfa_svc.h
index 6df1492089c..4c0ac3e1a13 100644
--- a/drivers/scsi/bfa/bfa_svc.h
+++ b/drivers/scsi/bfa/bfa_svc.h
@@ -26,6 +26,7 @@
* Scatter-gather DMA related defines
*/
#define BFA_SGPG_MIN (16)
+#define BFA_SGPG_MAX (8192)
/*
* Alignment macro for SG page allocation
@@ -54,17 +55,21 @@ struct bfa_sgpg_s {
*/
#define BFA_SGPG_NPAGE(_nsges) (((_nsges) / BFI_SGPG_DATA_SGES) + 1)
+/* Max SGPG dma segs required */
+#define BFA_SGPG_DMA_SEGS \
+ BFI_MEM_DMA_NSEGS(BFA_SGPG_MAX, (uint32_t)sizeof(struct bfi_sgpg_s))
+
struct bfa_sgpg_mod_s {
struct bfa_s *bfa;
int num_sgpgs; /* number of SG pages */
int free_sgpgs; /* number of free SG pages */
- struct bfa_sgpg_s *hsgpg_arr; /* BFA SG page array */
- struct bfi_sgpg_s *sgpg_arr; /* actual SG page array */
- u64 sgpg_arr_pa; /* SG page array DMA addr */
struct list_head sgpg_q; /* queue of free SG pages */
struct list_head sgpg_wait_q; /* wait queue for SG pages */
+ struct bfa_mem_dma_s dma_seg[BFA_SGPG_DMA_SEGS];
+ struct bfa_mem_kva_s kva_seg;
};
#define BFA_SGPG_MOD(__bfa) (&(__bfa)->modules.sgpg_mod)
+#define BFA_MEM_SGPG_KVA(__bfa) (&(BFA_SGPG_MOD(__bfa)->kva_seg))
bfa_status_t bfa_sgpg_malloc(struct bfa_s *bfa, struct list_head *sgpg_q,
int nsgpgs);
@@ -79,27 +84,32 @@ void bfa_sgpg_wcancel(struct bfa_s *bfa, struct bfa_sgpg_wqe_s *wqe);
* FCXP related defines
*/
#define BFA_FCXP_MIN (1)
+#define BFA_FCXP_MAX (256)
#define BFA_FCXP_MAX_IBUF_SZ (2 * 1024 + 256)
#define BFA_FCXP_MAX_LBUF_SZ (4 * 1024 + 256)
+/* Max FCXP dma segs required */
+#define BFA_FCXP_DMA_SEGS \
+ BFI_MEM_DMA_NSEGS(BFA_FCXP_MAX, \
+ (u32)BFA_FCXP_MAX_IBUF_SZ + BFA_FCXP_MAX_LBUF_SZ)
+
struct bfa_fcxp_mod_s {
struct bfa_s *bfa; /* backpointer to BFA */
struct bfa_fcxp_s *fcxp_list; /* array of FCXPs */
u16 num_fcxps; /* max num FCXP requests */
struct list_head fcxp_free_q; /* free FCXPs */
struct list_head fcxp_active_q; /* active FCXPs */
- void *req_pld_list_kva; /* list of FCXP req pld */
- u64 req_pld_list_pa; /* list of FCXP req pld */
- void *rsp_pld_list_kva; /* list of FCXP resp pld */
- u64 rsp_pld_list_pa; /* list of FCXP resp pld */
struct list_head wait_q; /* wait queue for free fcxp */
struct list_head fcxp_unused_q; /* unused fcxps */
u32 req_pld_sz;
u32 rsp_pld_sz;
+ struct bfa_mem_dma_s dma_seg[BFA_FCXP_DMA_SEGS];
+ struct bfa_mem_kva_s kva_seg;
};
#define BFA_FCXP_MOD(__bfa) (&(__bfa)->modules.fcxp_mod)
#define BFA_FCXP_FROM_TAG(__mod, __tag) (&(__mod)->fcxp_list[__tag])
+#define BFA_MEM_FCXP_KVA(__bfa) (&(BFA_FCXP_MOD(__bfa)->kva_seg))
typedef void (*fcxp_send_cb_t) (struct bfa_s *ioc, struct bfa_fcxp_s *fcxp,
void *cb_arg, bfa_status_t req_status,
@@ -207,13 +217,15 @@ struct bfa_fcxp_wqe_s {
#define BFA_FCXP_RSP_FCHS(_fcxp) (&((_fcxp)->rsp_info.fchs))
#define BFA_FCXP_RSP_PLD(_fcxp) (bfa_fcxp_get_rspbuf(_fcxp))
-#define BFA_FCXP_REQ_PLD_PA(_fcxp) \
- ((_fcxp)->fcxp_mod->req_pld_list_pa + \
- ((_fcxp)->fcxp_mod->req_pld_sz * (_fcxp)->fcxp_tag))
+#define BFA_FCXP_REQ_PLD_PA(_fcxp) \
+ bfa_mem_get_dmabuf_pa((_fcxp)->fcxp_mod, (_fcxp)->fcxp_tag, \
+ (_fcxp)->fcxp_mod->req_pld_sz + (_fcxp)->fcxp_mod->rsp_pld_sz)
-#define BFA_FCXP_RSP_PLD_PA(_fcxp) \
- ((_fcxp)->fcxp_mod->rsp_pld_list_pa + \
- ((_fcxp)->fcxp_mod->rsp_pld_sz * (_fcxp)->fcxp_tag))
+/* fcxp_buf = req_buf + rsp_buf :- add req_buf_sz to get to rsp_buf */
+#define BFA_FCXP_RSP_PLD_PA(_fcxp) \
+ (bfa_mem_get_dmabuf_pa((_fcxp)->fcxp_mod, (_fcxp)->fcxp_tag, \
+ (_fcxp)->fcxp_mod->req_pld_sz + (_fcxp)->fcxp_mod->rsp_pld_sz) + \
+ (_fcxp)->fcxp_mod->req_pld_sz)
void bfa_fcxp_isr(struct bfa_s *bfa, struct bfi_msg_s *msg);
@@ -241,9 +253,11 @@ struct bfa_rport_mod_s {
struct list_head rp_active_q; /* free bfa_rports */
struct list_head rp_unused_q; /* unused bfa rports */
u16 num_rports; /* number of rports */
+ struct bfa_mem_kva_s kva_seg;
};
#define BFA_RPORT_MOD(__bfa) (&(__bfa)->modules.rport_mod)
+#define BFA_MEM_RPORT_KVA(__bfa) (&(BFA_RPORT_MOD(__bfa)->kva_seg))
/*
* Convert rport tag to RPORT
@@ -301,7 +315,7 @@ struct bfa_rport_s {
*/
#define BFA_UF_MIN (4)
-
+#define BFA_UF_MAX (256)
struct bfa_uf_s {
struct list_head qe; /* queue element */
@@ -329,6 +343,18 @@ struct bfa_uf_s {
*/
typedef void (*bfa_cb_uf_recv_t) (void *cbarg, struct bfa_uf_s *uf);
+#define BFA_UF_BUFSZ (2 * 1024 + 256)
+
+struct bfa_uf_buf_s {
+ u8 d[BFA_UF_BUFSZ];
+};
+
+#define BFA_PER_UF_DMA_SZ \
+ (u32)BFA_ROUNDUP(sizeof(struct bfa_uf_buf_s), BFA_DMA_ALIGN_SZ)
+
+/* Max UF dma segs required */
+#define BFA_UF_DMA_SEGS BFI_MEM_DMA_NSEGS(BFA_UF_MAX, BFA_PER_UF_DMA_SZ)
+
struct bfa_uf_mod_s {
struct bfa_s *bfa; /* back pointer to BFA */
struct bfa_uf_s *uf_list; /* array of UFs */
@@ -336,32 +362,23 @@ struct bfa_uf_mod_s {
struct list_head uf_free_q; /* free UFs */
struct list_head uf_posted_q; /* UFs posted to IOC */
struct list_head uf_unused_q; /* unused UF's */
- struct bfa_uf_buf_s *uf_pbs_kva; /* list UF bufs request pld */
- u64 uf_pbs_pa; /* phy addr for UF bufs */
struct bfi_uf_buf_post_s *uf_buf_posts;
/* pre-built UF post msgs */
bfa_cb_uf_recv_t ufrecv; /* uf recv handler function */
void *cbarg; /* uf receive handler arg */
+ struct bfa_mem_dma_s dma_seg[BFA_UF_DMA_SEGS];
+ struct bfa_mem_kva_s kva_seg;
};
#define BFA_UF_MOD(__bfa) (&(__bfa)->modules.uf_mod)
+#define BFA_MEM_UF_KVA(__bfa) (&(BFA_UF_MOD(__bfa)->kva_seg))
#define ufm_pbs_pa(_ufmod, _uftag) \
- ((_ufmod)->uf_pbs_pa + sizeof(struct bfa_uf_buf_s) * (_uftag))
+ bfa_mem_get_dmabuf_pa(_ufmod, _uftag, BFA_PER_UF_DMA_SZ)
void bfa_uf_isr(struct bfa_s *bfa, struct bfi_msg_s *msg);
void bfa_uf_res_recfg(struct bfa_s *bfa, u16 num_uf_fw);
-#define BFA_UF_BUFSZ (2 * 1024 + 256)
-
-/*
- * @todo private
- */
-struct bfa_uf_buf_s {
- u8 d[BFA_UF_BUFSZ];
-};
-
-
/*
* LPS - bfa lport login/logout service interface
*/
@@ -406,10 +423,12 @@ struct bfa_lps_mod_s {
struct list_head lps_login_q;
struct bfa_lps_s *lps_arr;
int num_lps;
+ struct bfa_mem_kva_s kva_seg;
};
#define BFA_LPS_MOD(__bfa) (&(__bfa)->modules.lps_mod)
#define BFA_LPS_FROM_TAG(__mod, __tag) (&(__mod)->lps_arr[__tag])
+#define BFA_MEM_LPS_KVA(__bfa) (&(BFA_LPS_MOD(__bfa)->kva_seg))
/*
* external functions
@@ -489,9 +508,11 @@ struct bfa_fcport_s {
bfa_boolean_t bbsc_op_state; /* Cred recov Oper State */
struct bfa_fcport_trunk_s trunk;
u16 fcoe_vlan;
+ struct bfa_mem_dma_s fcport_dma;
};
#define BFA_FCPORT_MOD(__bfa) (&(__bfa)->modules.fcport)
+#define BFA_MEM_FCPORT_DMA(__bfa) (&(BFA_FCPORT_MOD(__bfa)->fcport_dma))
/*
* protected functions