[3c6fe2e] | 1 | /*===============================================================*\ |
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| 2 | | Project: RTEMS Haleakala BSP | |
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| 3 | | * by Michael Hamel ADInstruments Ltd 2008 | |
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| 4 | +-----------------------------------------------------------------+ |
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| 5 | | The license and distribution terms for this file may be | |
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| 6 | | found in the file LICENSE in this distribution or at | |
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| 7 | | | |
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[c499856] | 8 | | http://www.rtems.org/license/LICENSE. | |
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[3c6fe2e] | 9 | | | |
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| 10 | +-----------------------------------------------------------------+ |
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| 11 | | this file contains the irq controller handler | |
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| 12 | \*===============================================================*/ |
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| 13 | #include <libcpu/spr.h> |
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| 14 | #include <bsp/irq.h> |
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| 15 | #include <bsp.h> |
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[2d2de4eb] | 16 | #include <bsp/vectors.h> |
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[3c6fe2e] | 17 | #include <rtems/bspIo.h> |
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| 18 | #include <rtems/powerpc/powerpc.h> |
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| 19 | |
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| 20 | |
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| 21 | /* |
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| 22 | * default on/off function |
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| 23 | */ |
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[378bea5] | 24 | static void nop_func(void) |
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[3c6fe2e] | 25 | { |
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| 26 | } |
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| 27 | |
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| 28 | /* |
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| 29 | * default isOn function |
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| 30 | */ |
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[378bea5] | 31 | static int not_connected(void) |
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[3c6fe2e] | 32 | { |
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| 33 | return 0; |
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| 34 | } |
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| 35 | |
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| 36 | static rtems_irq_connect_data rtemsIrq[BSP_IRQ_NUMBER]; |
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| 37 | static rtems_irq_global_settings initial_config; |
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| 38 | static rtems_irq_connect_data defaultIrq = { |
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[59888da] | 39 | .name = 0, |
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| 40 | .hdl = NULL, |
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| 41 | .handle = NULL, |
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| 42 | .on = (rtems_irq_enable) nop_func, |
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| 43 | .off = (rtems_irq_disable) nop_func, |
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| 44 | .isOn = (rtems_irq_is_enabled) not_connected, |
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| 45 | #ifdef BSP_SHARED_HANDLER_SUPPORT |
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| 46 | .next_handler = NULL |
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| 47 | #endif |
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[3c6fe2e] | 48 | }; |
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| 49 | |
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| 50 | static rtems_irq_prio irqPrioTable[BSP_IRQ_NUMBER]={ |
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| 51 | /* |
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| 52 | * Processor exceptions handled as interrupts |
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| 53 | */ |
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| 54 | 0 |
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| 55 | }; |
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| 56 | |
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| 57 | /* |
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| 58 | * This code assumes the exceptions management setup has already |
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| 59 | * been done. We just need to replace the exceptions that will |
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| 60 | * be handled like interrupt. On mcp750/mpc750 and many PPC processors |
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| 61 | * this means the decrementer exception and the external exception. |
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| 62 | */ |
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| 63 | |
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| 64 | void BSP_rtems_irq_mng_init(unsigned cpuId) |
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| 65 | { |
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| 66 | int i; |
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[ac7af4a] | 67 | |
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[3c6fe2e] | 68 | /* |
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| 69 | * re-init the rtemsIrq table |
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| 70 | */ |
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| 71 | for (i = 0; i < BSP_IRQ_NUMBER; i++) { |
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| 72 | rtemsIrq[i] = defaultIrq; |
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| 73 | rtemsIrq[i].name = i; |
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| 74 | } |
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| 75 | /* |
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| 76 | * Init initial Interrupt management config |
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| 77 | */ |
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| 78 | initial_config.irqNb = BSP_IRQ_NUMBER; |
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| 79 | initial_config.defaultEntry = defaultIrq; |
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| 80 | initial_config.irqHdlTbl = rtemsIrq; |
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| 81 | initial_config.irqBase = BSP_LOWEST_OFFSET; |
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| 82 | initial_config.irqPrioTbl = irqPrioTable; |
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| 83 | |
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| 84 | if (!BSP_rtems_irq_mngt_set(&initial_config)) { |
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| 85 | /* |
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| 86 | * put something here that will show the failure... |
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| 87 | */ |
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[1c193a2] | 88 | rtems_panic( |
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[3c6fe2e] | 89 | "Unable to initialize RTEMS interrupt management!!! System locked\n" |
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| 90 | ); |
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| 91 | } |
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[ac7af4a] | 92 | |
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| 93 | #ifdef TRACE_IRQ_INIT |
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[3c6fe2e] | 94 | printk("RTEMS IRQ management is now operational\n"); |
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| 95 | #endif |
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| 96 | } |
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