1 | /* void Shm_Get_configuration( 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 PowerPC PSIM. |
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5 | * |
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6 | * INPUT PARAMETERS: |
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7 | * localnode - local node number |
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8 | * shmcfg - address of pointer to SHM Config Table |
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9 | * |
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10 | * OUTPUT PARAMETERS: |
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11 | * *shmcfg - pointer to SHM Config Table |
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12 | * |
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13 | * NOTES: No interrupt support. |
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14 | * |
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15 | * COPYRIGHT (c) 1989-2008. |
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16 | * On-Line Applications Research Corporation (OAR). |
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17 | * |
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18 | * The license and distribution terms for this file may be |
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19 | * found in the file LICENSE in this distribution or at |
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20 | * http://www.rtems.org/license/LICENSE. |
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21 | */ |
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22 | |
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23 | #include <rtems.h> |
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24 | #include <psim.h> |
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25 | #include "shm_driver.h" |
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26 | |
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27 | #define INTERRUPT 0 /* PSIM target supports only */ |
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28 | #define POLLING 1 /* polling mode. */ |
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29 | |
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30 | shm_config_table BSP_shm_cfgtbl; |
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31 | |
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32 | void Shm_Get_configuration( |
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33 | uint32_t localnode, |
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34 | shm_config_table **shmcfg |
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35 | ) |
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36 | { |
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37 | BSP_shm_cfgtbl.base = (uint32_t*)PSIM.SharedMemory; |
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38 | BSP_shm_cfgtbl.length = sizeof(PSIM.SharedMemory); |
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39 | BSP_shm_cfgtbl.format = SHM_BIG; |
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40 | |
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41 | BSP_shm_cfgtbl.cause_intr = Shm_Cause_interrupt; |
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42 | |
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43 | #ifdef NEUTRAL_BIG |
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44 | BSP_shm_cfgtbl.convert = NULL_CONVERT; |
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45 | #else |
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46 | BSP_shm_cfgtbl.convert = CPU_swap_u32; |
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47 | #endif |
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48 | |
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49 | #if (POLLING==1) |
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50 | BSP_shm_cfgtbl.poll_intr = POLLED_MODE; |
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51 | BSP_shm_cfgtbl.Intr.address = NO_INTERRUPT; |
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52 | BSP_shm_cfgtbl.Intr.value = NO_INTERRUPT; |
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53 | BSP_shm_cfgtbl.Intr.length = NO_INTERRUPT; |
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54 | #else |
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55 | BSP_shm_cfgtbl.poll_intr = INTR_MODE; |
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56 | BSP_shm_cfgtbl.Intr.address = 0; |
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57 | BSP_shm_cfgtbl.Intr.value = 0; |
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58 | BSP_shm_cfgtbl.Intr.length = BYTE; |
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59 | #endif |
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60 | |
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61 | *shmcfg = &BSP_shm_cfgtbl; |
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62 | |
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63 | } |
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