1 | /* |
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2 | * @file |
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3 | * @ingroup powerpc_psim |
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4 | * @brief Implementations for interrupt mechanisms for Time Test 27 |
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5 | */ |
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6 | |
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7 | /* |
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8 | * The license and distribution terms for this file may be |
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9 | * found in the file LICENSE in this distribution or at |
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10 | * http://www.rtems.org/license/LICENSE. |
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11 | */ |
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12 | |
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13 | #ifndef _RTEMS_TMTEST27 |
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14 | #error "This is an RTEMS internal file you must not include directly." |
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15 | #endif |
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16 | |
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17 | #ifndef __tm27_h |
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18 | #define __tm27_h |
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19 | |
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20 | #include <bsp/irq.h> |
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21 | |
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22 | /* |
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23 | * Stuff for Time Test 27 |
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24 | */ |
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25 | |
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26 | #define MUST_WAIT_FOR_INTERRUPT 1 |
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27 | |
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28 | static void nullFunc(void) {} |
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29 | static rtems_irq_connect_data clockIrqData = {BSP_DECREMENTER, |
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30 | 0, |
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31 | (rtems_irq_enable)nullFunc, |
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32 | (rtems_irq_disable)nullFunc, |
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33 | (rtems_irq_is_enabled) nullFunc}; |
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34 | |
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35 | static inline void Install_tm27_vector( rtems_interrupt_handler handler ) |
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36 | { |
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37 | clockIrqData.hdl = handler; |
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38 | if (!BSP_install_rtems_irq_handler (&clockIrqData)) { |
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39 | printk("Error installing clock interrupt handler!\n"); |
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40 | rtems_fatal_error_occurred(1); |
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41 | } |
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42 | } |
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43 | |
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44 | #define Cause_tm27_intr() \ |
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45 | do { \ |
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46 | uint32_t _clicks = 1; \ |
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47 | __asm__ volatile( "mtdec %0" : "=r" ((_clicks)) : "r" ((_clicks)) ); \ |
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48 | } while (0) |
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49 | |
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50 | |
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51 | #define Clear_tm27_intr() \ |
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52 | do { \ |
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53 | uint32_t _clicks = 0xffffffff; \ |
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54 | __asm__ volatile( "mtdec %0" : "=r" ((_clicks)) : "r" ((_clicks)) ); \ |
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55 | } while (0) |
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56 | |
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57 | #define Lower_tm27_intr() \ |
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58 | do { \ |
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59 | uint32_t _msr = 0; \ |
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60 | _ISR_Set_level( 0 ); \ |
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61 | __asm__ volatile( "mfmsr %0 ;" : "=r" (_msr) : "r" (_msr) ); \ |
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62 | _msr |= 0x8002; \ |
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63 | __asm__ volatile( "mtmsr %0 ;" : "=r" (_msr) : "r" (_msr) ); \ |
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64 | } while (0) |
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65 | |
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66 | #endif |
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