[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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| 8 | | http://www.rtems.com/license/LICENSE. | |
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| 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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| 16 | #include <libcpu/raw_exception.h> |
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| 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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| 39 | /* name, hdl , handle , on , off , isOn */ |
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| 40 | 0, nop_func , NULL , nop_func , nop_func , not_connected |
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| 41 | }; |
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| 42 | |
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| 43 | static rtems_irq_prio irqPrioTable[BSP_IRQ_NUMBER]={ |
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| 44 | /* |
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| 45 | * Processor exceptions handled as interrupts |
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| 46 | */ |
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| 47 | 0 |
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| 48 | }; |
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| 49 | |
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| 50 | /* |
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| 51 | * This code assumes the exceptions management setup has already |
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| 52 | * been done. We just need to replace the exceptions that will |
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| 53 | * be handled like interrupt. On mcp750/mpc750 and many PPC processors |
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| 54 | * this means the decrementer exception and the external exception. |
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| 55 | */ |
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| 56 | |
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| 57 | void BSP_rtems_irq_mng_init(unsigned cpuId) |
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| 58 | { |
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| 59 | int i; |
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| 60 | |
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| 61 | /* |
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| 62 | * re-init the rtemsIrq table |
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| 63 | */ |
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| 64 | for (i = 0; i < BSP_IRQ_NUMBER; i++) { |
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| 65 | rtemsIrq[i] = defaultIrq; |
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| 66 | rtemsIrq[i].name = i; |
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| 67 | } |
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| 68 | /* |
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| 69 | * Init initial Interrupt management config |
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| 70 | */ |
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| 71 | initial_config.irqNb = BSP_IRQ_NUMBER; |
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| 72 | initial_config.defaultEntry = defaultIrq; |
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| 73 | initial_config.irqHdlTbl = rtemsIrq; |
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| 74 | initial_config.irqBase = BSP_LOWEST_OFFSET; |
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| 75 | initial_config.irqPrioTbl = irqPrioTable; |
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| 76 | |
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| 77 | if (!BSP_rtems_irq_mngt_set(&initial_config)) { |
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| 78 | /* |
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| 79 | * put something here that will show the failure... |
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| 80 | */ |
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| 81 | BSP_panic( |
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| 82 | "Unable to initialize RTEMS interrupt management!!! System locked\n" |
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| 83 | ); |
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| 84 | } |
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| 85 | |
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| 86 | #ifdef TRACE_IRQ_INIT |
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| 87 | printk("RTEMS IRQ management is now operational\n"); |
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| 88 | #endif |
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| 89 | } |
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