source: rtems/c/src/lib/libbsp/m68k/mvme147s/shmsupp/getcfg.c @ 4d7f067

4.104.114.84.9
Last change on this file since 4d7f067 was 4d7f067, checked in by Joel Sherrill <joel.sherrill@…>, on Sep 4, 2003 at 6:52:02 PM

2003-09-04 Joel Sherrill <joel@…>

  • include/bsp.h, include/coverhd.h, shmsupp/addrconv.c, shmsupp/getcfg.c, shmsupp/lock.c, shmsupp/mpisr.c, startup/bspstart.c, startup/linkcmds: URL for license changed.
  • Property mode set to 100644
File size: 2.4 KB
Line 
1/*  void Shm_Get_configuration( localnode, &shmcfg )
2 *
3 *  This routine initializes, if necessary, and returns a pointer
4 *  to the Shared Memory Configuration Table for the MVME147.
5 *
6 *  INPUT PARAMETERS:
7 *    localnode - local node number
8 *    shmcfg    - address of pointer to SHM Config Table
9 *
10 *  OUTPUT PARAMETERS:
11 *    *shmcfg   - pointer to SHM Config Table
12 *
13 *  NOTES:  The SIGLP interrupt on the MVME147 is used as an interprocessor
14 *          interrupt.
15 *
16 *  COPYRIGHT (c) 1989-1999.
17 *  On-Line Applications Research Corporation (OAR).
18 *
19 *  The license and distribution terms for this file may be
20 *  found in the file LICENSE in this distribution or at
21 *  http://www.rtems.com/license/LICENSE.
22 *
23 *  MVME147 port for TNI - Telecom Bretagne
24 *  by Dominique LE CAMPION (Dominique.LECAMPION@enst-bretagne.fr)
25 *  June 1996
26 *
27 *  $Id$
28 */
29
30#include <bsp.h>
31#include <rtems.h>
32#include "shm_driver.h"
33
34#define INTERRUPT 1                   /* MVME147 target supports both */
35#define POLLING   0                   /* polling and interrupt modes  */
36
37shm_config_table BSP_shm_cfgtbl;
38
39rtems_unsigned32 *BSP_int_address()
40{
41  rtems_unsigned32 id, offset;
42
43  id      = (rtems_unsigned32) vme_lcsr->gcsr_base_address;
44  offset  = (id << 4) & 0xF0;
45  offset |= 0xffff0003; /* points to GCSR global 1 */
46  return( (rtems_unsigned32 * ) offset );
47}
48
49void Shm_Get_configuration(
50  rtems_unsigned32   localnode,
51  shm_config_table **shmcfg
52)
53{
54  /* A shared mem space has bee left between RAM_END and DRAM_END
55   on the first node*/
56  if (localnode == 1)
57    BSP_shm_cfgtbl.base       = (vol_u32 *) RAM_END; 
58  else
59    BSP_shm_cfgtbl.base       = (vol_u32 *) (DRAM_END + RAM_END);
60
61  BSP_shm_cfgtbl.length       = DRAM_END - RAM_END; 
62  BSP_shm_cfgtbl.format       = SHM_BIG;
63 
64  BSP_shm_cfgtbl.cause_intr   = Shm_Cause_interrupt;
65 
66#ifdef NEUTRAL_BIG
67  BSP_shm_cfgtbl.convert      = NULL_CONVERT;
68#else
69  BSP_shm_cfgtbl.convert      = CPU_swap_u32;
70#endif
71
72#if (POLLING==1)
73  BSP_shm_cfgtbl.poll_intr    = POLLED_MODE;
74  BSP_shm_cfgtbl.Intr.address = NO_INTERRUPT;
75  BSP_shm_cfgtbl.Intr.value   = NO_INTERRUPT;
76  BSP_shm_cfgtbl.Intr.length  = NO_INTERRUPT;
77#else
78  BSP_shm_cfgtbl.poll_intr    = INTR_MODE;
79  BSP_shm_cfgtbl.Intr.address = BSP_int_address(); /* GCSR global 1 */
80  BSP_shm_cfgtbl.Intr.value   = 0x01; /* SIGLP */
81  BSP_shm_cfgtbl.Intr.length  = BYTE;
82#endif
83
84  *shmcfg = &BSP_shm_cfgtbl;
85
86}
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