1 | /* Shm_isr_cvme961() |
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2 | * |
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3 | * NOTE: This routine is not used when in polling mode. Either |
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4 | * this routine OR Shm_clockisr is used in a particular system. |
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5 | * |
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6 | * There must be sufficient time after the IACK (read at |
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7 | * 0xb600000x) for the VIC068 to clear the interrupt request |
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8 | * before the interrupt request is cleared from IPND (sf0). |
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9 | * |
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10 | * COPYRIGHT (c) 1989-1997. |
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11 | * On-Line Applications Research Corporation (OAR). |
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12 | * Copyright assigned to U.S. Government, 1994. |
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13 | * |
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14 | * The license and distribution terms for this file may in |
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15 | * the file LICENSE in this distribution or at |
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16 | * http://www.OARcorp.com/rtems/license.html. |
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17 | * |
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18 | * $Id$ |
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19 | */ |
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20 | |
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21 | #include <rtems.h> |
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22 | #include <bsp.h> |
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23 | #include "shm.h" |
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24 | |
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25 | rtems_isr Shm_isr_cvme961( |
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26 | rtems_vector_number vector |
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27 | ) |
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28 | { |
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29 | rtems_unsigned32 vic_vector; |
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30 | |
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31 | /* enable_tracing(); */ |
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32 | vic_vector = (*(volatile rtems_unsigned8 *)0xb6000007); |
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33 | /* reset intr by reading */ |
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34 | /* vector at IPL=3 */ |
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35 | Shm_Interrupt_count += 1; |
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36 | rtems_multiprocessing_announce(); |
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37 | (*(volatile rtems_unsigned8 *)0xa000005f) = 0; /* clear ICMS0 */ |
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38 | i960_clear_intr( 6 ); |
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39 | |
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40 | } |
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41 | |
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42 | /* void _Shm_setvec( ) |
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43 | * |
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44 | * This driver routine sets the SHM interrupt vector to point to the |
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45 | * driver's SHM interrupt service routine. |
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46 | * |
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47 | * NOTE: See pp. 21-22, 36-39 of the CVME961 Manual for more info. |
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48 | * |
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49 | * Input parameters: NONE |
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50 | * |
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51 | * Output parameters: NONE |
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52 | */ |
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53 | |
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54 | void Shm_setvec() |
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55 | { |
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56 | rtems_unsigned32 isrlevel; |
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57 | |
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58 | rtems_interrupt_disable( isrlevel ); |
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59 | /* set SQSIO4 CTL REG for */ |
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60 | /* VME slave address */ |
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61 | (*(rtems_unsigned8 *)0xc00000b0) = |
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62 | (Shm_RTEMS_MP_Configuration->node - 1) | 0x10; |
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63 | set_vector( Shm_isr_cvme961, 6, 1 ); |
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64 | /* set ICMS Bector Base Register */ |
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65 | (*(rtems_unsigned8 *)0xa0000053) = 0x60; /* XINT6 vector is 0x62 */ |
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66 | /* set ICMS Intr Control Reg */ |
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67 | (*(rtems_unsigned8 *)0xa0000047) = 0xeb; /* ICMS0 enabled, IPL=0 */ |
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68 | (*(rtems_unsigned8 *)0xa000005f) = 0; /* clear ICMS0 */ |
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69 | rtems_interrupt_enable( isrlevel ); |
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70 | } |
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