BSD 4_3 release

[unix-history] / usr / src / sys / vaxif / if_uba.h

diff --git a/usr/src/sys/vaxif/if_uba.h b/usr/src/sys/vaxif/if_uba.h
index 3a79999..f9d3805 100644 (file)
--- a/usr/src/sys/vaxif/if_uba.h
+++ b/usr/src/sys/vaxif/if_uba.h
@@ -1,4 +1,10 @@
-/*     if_uba.h        6.1     83/07/29        */
+/*
+ * Copyright (c) 1982, 1986 Regents of the University of California.
+ * All rights reserved.  The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ *
+ *     @(#)if_uba.h    7.1 (Berkeley) 6/5/86
+ */

 
 /*
  * Structure and routine definitions
 
 /*
  * Structure and routine definitions


@@ -7,8 +13,9 @@
 
 #define        IF_MAXNUBAMR    10
 /*
 
 #define        IF_MAXNUBAMR    10
 /*

- * Each interface has one of these structures giving information
- * about UNIBUS resources held by the interface.
+ * Each interface has structures giving information
+ * about UNIBUS resources held by the interface
+ * for each send and receive buffer.

  *
  * We hold IF_NUBAMR map registers for datagram data, starting
  * at ifr_mr.  Map register ifr_mr[-1] maps the local network header
  *
  * We hold IF_NUBAMR map registers for datagram data, starting
  * at ifr_mr.  Map register ifr_mr[-1] maps the local network header


@@ -27,23 +34,72 @@
  * with the pages already containing the data, mapping the allocated
  * pages to replace the input pages for the next UNIBUS data input.
  */
  * with the pages already containing the data, mapping the allocated
  * pages to replace the input pages for the next UNIBUS data input.
  */

-struct ifuba {
-       short   ifu_uban;                       /* uba number */
-       short   ifu_hlen;                       /* local net header length */
-       struct  uba_regs *ifu_uba;              /* uba regs, in vm */
-       struct ifrw {
-               caddr_t ifrw_addr;              /* virt addr of header */
-               int     ifrw_bdp;               /* unibus bdp */
-               int     ifrw_info;              /* value from ubaalloc */
-               int     ifrw_proto;             /* map register prototype */
-               struct  pte *ifrw_mr;           /* base of map registers */
-       } ifu_r, ifu_w;
-       struct  pte ifu_wmap[IF_MAXNUBAMR];     /* base pages for output */
-       short   ifu_xswapd;                     /* mask of clusters swapped */
-       short   ifu_flags;                      /* used during uballoc's */
-       struct  mbuf *ifu_xtofree;              /* pages being dma'd out */
+
+/*
+ * Information per interface.
+ */
+struct ifubinfo {
+       short   iff_uban;                       /* uba number */
+       short   iff_hlen;                       /* local net header length */
+       struct  uba_regs *iff_uba;              /* uba regs, in vm */
+       short   iff_flags;                      /* used during uballoc's */
+};
+
+/*
+ * Information per buffer.
+ */
+struct ifrw {
+       caddr_t ifrw_addr;                      /* virt addr of header */
+       short   ifrw_bdp;                       /* unibus bdp */
+       short   ifrw_flags;                     /* type, etc. */
+#define        IFRW_W  0x01                            /* is a transmit buffer */
+       int     ifrw_info;                      /* value from ubaalloc */
+       int     ifrw_proto;                     /* map register prototype */
+       struct  pte *ifrw_mr;                   /* base of map registers */

 };
 
 };
 

+/*
+ * Information per transmit buffer, including the above.
+ */
+struct ifxmt {
+       struct  ifrw ifrw;
+       caddr_t ifw_base;                       /* virt addr of buffer */
+       struct  pte ifw_wmap[IF_MAXNUBAMR];     /* base pages for output */
+       struct  mbuf *ifw_xtofree;              /* pages being dma'd out */
+       short   ifw_xswapd;                     /* mask of clusters swapped */
+       short   ifw_nmr;                        /* number of entries in wmap */
+};
+#define        ifw_addr        ifrw.ifrw_addr
+#define        ifw_bdp         ifrw.ifrw_bdp
+#define        ifw_flags       ifrw.ifrw_flags
+#define        ifw_info        ifrw.ifrw_info
+#define        ifw_proto       ifrw.ifrw_proto
+#define        ifw_mr          ifrw.ifrw_mr
+
+/*
+ * Most interfaces have a single receive and a single transmit buffer,
+ * and use struct ifuba to store all of the unibus information.
+ */
+struct ifuba {
+       struct  ifubinfo ifu_info;
+       struct  ifrw ifu_r;
+       struct  ifxmt ifu_xmt;
+};
+
+#define        ifu_uban        ifu_info.iff_uban
+#define        ifu_hlen        ifu_info.iff_hlen
+#define        ifu_uba         ifu_info.iff_uba
+#define        ifu_flags       ifu_info.iff_flags
+#define        ifu_w           ifu_xmt.ifrw
+#define        ifu_xtofree     ifu_xmt.ifw_xtofree
+

 #ifdef         KERNEL
 #ifdef         KERNEL

-struct mbuf *if_rubaget();
+#define        if_ubainit(ifuba, uban, hlen, nmr) \
+               if_ubaminit(&(ifuba)->ifu_info, uban, hlen, nmr, \
+                       &(ifuba)->ifu_r, 1, &(ifuba)->ifu_xmt, 1)
+#define        if_rubaget(ifu, totlen, off0, ifp) \
+               if_ubaget(&(ifu)->ifu_info, &(ifu)->ifu_r, totlen, off0, ifp)
+#define        if_wubaput(ifu, m) \
+               if_ubaput(&(ifu)->ifu_info, &(ifu)->ifu_xmt, m)
+struct mbuf *if_ubaget();

 #endif
 #endif