1 | /* void Shm_get_config( localnode, &shmcfg ) |
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2 | * |
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3 | * This routine initializes, if necessary, and returns a pointer |
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4 | * to the Shared Memory Configuration Table for the UNIX |
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5 | * simulator. |
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6 | * |
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7 | * INPUT PARAMETERS: |
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8 | * localnode - local node number |
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9 | * shmcfg - address of pointer to SHM Config Table |
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10 | * |
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11 | * OUTPUT PARAMETERS: |
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12 | * *shmcfg - pointer to SHM Config Table |
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13 | * |
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14 | * NOTES: This driver is capable of supporting a practically unlimited |
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15 | * number of nodes. |
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16 | * |
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17 | * COPYRIGHT (c) 1989-1999. |
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18 | * On-Line Applications Research Corporation (OAR). |
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19 | * |
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20 | * The license and distribution terms for this file may be |
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21 | * found in the file LICENSE in this distribution or at |
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22 | * http://www.OARcorp.com/rtems/license.html. |
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23 | * |
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24 | * $Id$ |
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25 | */ |
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26 | |
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27 | #include <bsp.h> |
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28 | #include <shm_driver.h> |
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29 | #include <sys/types.h> /* pid_t */ |
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30 | |
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31 | shm_config_table BSP_shm_cfgtbl; |
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32 | |
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33 | int semid; |
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34 | |
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35 | void Shm_Cause_interrupt_unix( |
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36 | rtems_unsigned32 node |
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37 | ); |
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38 | |
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39 | void Shm_Get_configuration( |
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40 | rtems_unsigned32 localnode, |
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41 | shm_config_table **shmcfg |
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42 | ) |
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43 | { |
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44 | _CPU_SHM_Init( |
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45 | Shm_Maximum_nodes, |
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46 | Shm_Is_master_node(), |
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47 | (void **)&BSP_shm_cfgtbl.base, |
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48 | (unsigned32 *)&BSP_shm_cfgtbl.length |
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49 | ); |
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50 | |
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51 | BSP_shm_cfgtbl.format = SHM_BIG; |
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52 | |
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53 | BSP_shm_cfgtbl.cause_intr = Shm_Cause_interrupt_unix; |
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54 | |
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55 | #ifdef NEUTRAL_BIG |
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56 | BSP_shm_cfgtbl.convert = NULL_CONVERT; |
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57 | #else |
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58 | BSP_shm_cfgtbl.convert = CPU_swap_u32; |
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59 | #endif |
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60 | |
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61 | if ( _CPU_SHM_Get_vector() ) { |
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62 | BSP_shm_cfgtbl.poll_intr = INTR_MODE; |
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63 | BSP_shm_cfgtbl.Intr.address = (vol_u32 *) _CPU_Get_pid(); /* process id */ |
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64 | BSP_shm_cfgtbl.Intr.value = _CPU_SHM_Get_vector(); /* signal to send */ |
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65 | BSP_shm_cfgtbl.Intr.length = LONG; |
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66 | } else { |
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67 | BSP_shm_cfgtbl.poll_intr = POLLED_MODE; |
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68 | BSP_shm_cfgtbl.Intr.address = NO_INTERRUPT; |
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69 | BSP_shm_cfgtbl.Intr.value = NO_INTERRUPT; |
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70 | BSP_shm_cfgtbl.Intr.length = NO_INTERRUPT; |
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71 | } |
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72 | |
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73 | *shmcfg = &BSP_shm_cfgtbl; |
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74 | } |
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