release/src-rt/et/sys/et_linux.h

   1 /*
   2  * Linux device driver tunables for
   3  * Broadcom BCM47XX 10/100Mbps Ethernet Device Driver
   4  *
   5  * Copyright (C) 2010, 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   8  * This is UNPUBLISHED PROPRIETARY SOURCE CODE of Broadcom Corporation;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 1.16.12.3 2011-01-18 22:07:25 Exp $
  13  */
  14
  15 #ifndef _et_linux_h_
  16 #define _et_linux_h_
  17
  18 /* tunables */
  19 #define NTXD            128             /* # tx dma ring descriptors (must be ^2) */
  20 #define NRXD            512             /* # rx dma ring descriptors (must be ^2) */
  21 #if defined(CONFIG_RAM_SIZE) && (CONFIG_RAM_SIZE <= 16)
  22 #define NRXBUFPOST      256             /* try to keep this # rbufs posted to the chip */
  23 #else
  24 #define NRXBUFPOST      320             /* try to keep this # rbufs posted to the chip */
  25 #endif
  26 #define BUFSZ           2048            /* packet data buffer size */
  27 #define RXBUFSZ         (BUFSZ - 256)   /* receive buffer size */
  28
  29 #ifndef RXBND
  30 #define RXBND           32              /* max # rx frames to process in dpc */
  31 #endif
  32
  33 #if defined(ILSIM) || defined(__arch_um__)
  34 #undef  NTXD
  35 #define NTXD            16
  36 #undef  NRXD
  37 #define NRXD            16
  38 #undef  NRXBUFPOST
  39 #define NRXBUFPOST      2
  40 #endif
  41
  42 #define CTFPOOLSZ       512
  43
  44 #define PREFSZ                  96
  45 #define ETPREFHDRS(h, sz)       OSL_PREF_RANGE_ST((h), (sz))
  46
  47 #endif  /* _et_linux_h_ */