source: rtems/c/src/lib/libbsp/hppa1.1/simhppa/shmsupp/getcfg.c @ 5626be2

4.104.114.84.95
Last change on this file since 5626be2 was 5626be2, checked in by Joel Sherrill <joel.sherrill@…>, on Sep 4, 2003 at 6:51:16 PM

2003-09-04 Joel Sherrill <joel@…>

  • include/bsp.h, shmsupp/addrconv.c, shmsupp/cause_intr.c, shmsupp/getcfg.c, shmsupp/lock.c, shmsupp/mpisr.c, startup/bspclean.c, startup/bspstart.c, startup/setvec.c, tools/print_dump.c, tty/tty.c: URL for license changed.
  • Property mode set to 100644
File size: 2.6 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 HP PA-RISC
5 *  simulator.
6 *
7 *  INPUT PARAMETERS:
8 *    localnode - local node number
9 *    shmcfg    - address of pointer to SHM Config Table
10 *
11 *  OUTPUT PARAMETERS:
12 *    *shmcfg   - pointer to SHM Config Table
13 *
14 *  NOTES:  The MP interrupt used is the Runway bus' ability to directly
15 *          address the control registers of up to four CPUs and cause
16 *          interrupts on them.
17 *
18 *          The following table illustrates the configuration limitations:
19 *
20 *                                   BUS     MAX
21 *                          MODE    ENDIAN  NODES
22 *                        ========= ====== =======
23 *                         POLLED    BIG    2+
24 *                        INTERRUPT  BIG    2..4 (on Runway)
25 *
26 *  COPYRIGHT (c) 1989-1999.
27 *  On-Line Applications Research Corporation (OAR).
28 *
29 *  The license and distribution terms for this file may be
30 *  found in the file LICENSE in this distribution or at
31 *  http://www.rtems.com/license/LICENSE.
32 *
33 *  $Id$
34 */
35
36#include <bsp.h>
37
38#include <shm_driver.h>
39
40#define INTERRUPT 0        /* can be interrupt or polling */
41#define POLLING   1
42
43#define HPPA_RUNWAY_PROC_HPA_BASE  ((void *) 0xFFFA0000)
44
45/* given a processor number, where is its HPA? */
46#define HPPA_RUNWAY_HPA(cpu)   \
47  ((rtems_unsigned32) (HPPA_RUNWAY_PROC_HPA_BASE + ((cpu) * 0x2000)))
48
49#define HPPA_RUNWAY_REG_IO_EIR_OFFSET   0x000
50
51shm_config_table BSP_shm_cfgtbl;
52
53extern void Shm_Cause_interrupt_pxfl( rtems_unsigned32 node );
54
55void Shm_Get_configuration(
56  rtems_unsigned32   localnode,
57  shm_config_table **shmcfg
58)
59{
60   BSP_shm_cfgtbl.base         = (vol_u32 *) 0x44000000;
61   BSP_shm_cfgtbl.length       = 16 * KILOBYTE;
62   BSP_shm_cfgtbl.format       = SHM_BIG;
63
64   BSP_shm_cfgtbl.cause_intr   = Shm_Cause_interrupt_pxfl;
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 =
80        (vol_u32 *) (HPPA_RUNWAY_HPA( localnode - 1) +
81                     HPPA_RUNWAY_REG_IO_EIR_OFFSET);
82   BSP_shm_cfgtbl.Intr.value   = HPPA_INTERRUPT_EXTERNAL_MPCI;
83   BSP_shm_cfgtbl.Intr.length  = LONG;
84#endif
85
86   *shmcfg = &BSP_shm_cfgtbl;
87}
88
Note: See TracBrowser for help on using the repository browser.