release/src/et/sys/et_linux.h

   1 /*
   2  * Linux device driver tunables for
   3  * Broadcom BCM47XX 10/100Mbps Ethernet Device Driver
   4  *
   5  * Copyright 2006, Broadcom Corporation
   6  * All Rights Reserved.
   7  *
   8  * This is UNPUBLISHED PROPRIETARY SOURCE CODE of Broadcom Corporation;
   9  * the contents of this file may not be disclosed to third parties, copied
  10  * or duplicated in any form, in whole or in part, without the prior
  11  * written permission of Broadcom Corporation.
  12  * $Id: et_linux.h,v 1.1.1.1 2007/03/20 12:22:00 roly Exp $
  13  */
  14
  15 #ifndef _et_linux_h_
  16 #define _et_linux_h_
  17
  18 /* tunables */
  19 #define NTXD            64              /* # tx dma ring descriptors (must be ^2) */
  20 #define NRXD            512             /* # rx dma ring descriptors (must be ^2) */
  21 #define NRXBUFPOST      48              /* try to keep this # rbufs posted to the chip */
  22 #define BUFSZ           2048            /* packet data buffer size */
  23 #define RXBUFSZ         (BUFSZ - 256)   /* receive buffer size */
  24
  25 #ifndef RXBND
  26 #define RXBND           8               /* max # rx frames to process in dpc */
  27 #endif
  28
  29 #if defined(ILSIM) || defined(__arch_um__)
  30 #undef  NTXD
  31 #define NTXD            16
  32 #undef  NRXD
  33 #define NRXD            16
  34 #undef  NRXBUFPOST
  35 #define NRXBUFPOST      2
  36 #endif
  37
  38 #endif  /* _et_linux_h_ */