1 files changed, 79 insertions, 0 deletions

diff --git a/drivers/scsi/bfa/bfa_sgpg_priv.h b/drivers/scsi/bfa/bfa_sgpg_priv.h
new file mode 100644
index 000000000000..9c2a8cbe7522
--- /dev/null
+++ b/drivers/scsi/bfa/bfa_sgpg_priv.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
+ * All rights reserved
+ * www.brocade.com
+ *
+ * Linux driver for Brocade Fibre Channel Host Bus Adapter.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License (GPL) Version 2 as
+ * published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+/**
+ *  hal_sgpg.h BFA SG page module
+ */
+
+#ifndef __BFA_SGPG_PRIV_H__
+#define __BFA_SGPG_PRIV_H__
+
+#include <cs/bfa_q.h>
+
+#define BFA_SGPG_MIN    (16)
+
+/**
+ * Alignment macro for SG page allocation
+ */
+#define BFA_SGPG_ROUNDUP(_l) (((_l) + (sizeof(struct bfi_sgpg_s) - 1)) \
+                        & ~(sizeof(struct bfi_sgpg_s) - 1))
+
+struct bfa_sgpg_wqe_s {
+        struct list_head qe;    /*  queue sg page element       */
+        int     nsgpg;          /*  pages to be allocated       */
+        int     nsgpg_total;    /*  total pages required        */
+        void    (*cbfn) (void *cbarg);
+                                /*  callback function           */
+        void    *cbarg;         /*  callback arg                */
+        struct list_head sgpg_q;        /*  queue of alloced sgpgs      */
+};
+
+struct bfa_sgpg_s {
+        struct list_head        qe;     /*  queue sg page element       */
+        struct bfi_sgpg_s *sgpg; /*  va of SG page              */
+        union bfi_addr_u sgpg_pa;/*  pa of SG page              */
+};
+
+/**
+ * Given number of SG elements, BFA_SGPG_NPAGE() returns the number of
+ * SG pages required.
+ */
+#define BFA_SGPG_NPAGE(_nsges)  (((_nsges) / BFI_SGPG_DATA_SGES) + 1)
+
+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       */
+};
+#define BFA_SGPG_MOD(__bfa)     (&(__bfa)->modules.sgpg_mod)
+
+bfa_status_t    bfa_sgpg_malloc(struct bfa_s *bfa, struct list_head *sgpg_q,
+                                                                int nsgpgs);
+void            bfa_sgpg_mfree(struct bfa_s *bfa, struct list_head *sgpg_q,
+                                                                int nsgpgs);
+void            bfa_sgpg_winit(struct bfa_sgpg_wqe_s *wqe,
+                                   void (*cbfn) (void *cbarg), void *cbarg);
+void            bfa_sgpg_wait(struct bfa_s *bfa, struct bfa_sgpg_wqe_s *wqe,
+                                                                int nsgpgs);
+void            bfa_sgpg_wcancel(struct bfa_s *bfa, struct bfa_sgpg_wqe_s *wqe);
+
+#endif /* __BFA_SGPG_PRIV_H__ */