TEST(interrupt_test, TooManyHandlers) { // This should fail after 4 registered // We already have 1 from the setup. int i = 1; while(register_interrupt_handler(3, &callback, (void*)i) == 0) { i++; if(i > 300) { // arbitrarily large number break; } } TEST_ASSERT_EQUAL(4, i); // unregister all the interrupts we assigned. while(unregister_interrupt_handler(3, &callback, (void*)i--) == 0); }
TEST(interrupt_test, actuallyUnregisters) { unregister_interrupt_handler(3, &callback, (void*)0xDEADBEEF); trap(); TEST_ASSERT_EQUAL(0, testVar); }
/** Initialize new SB16 driver instance. * * @param[in] device DDF instance of the device to initialize. * @return Error code. */ static int sb_add_device(ddf_dev_t *device) { bool handler_regd = false; const size_t irq_cmd_count = sb16_irq_code_size(); irq_cmd_t irq_cmds[irq_cmd_count]; irq_pio_range_t irq_ranges[1]; sb16_t *soft_state = ddf_dev_data_alloc(device, sizeof(sb16_t)); int rc = soft_state ? EOK : ENOMEM; if (rc != EOK) { ddf_log_error("Failed to allocate sb16 structure."); goto error; } addr_range_t sb_regs; addr_range_t *p_sb_regs = &sb_regs; addr_range_t mpu_regs; addr_range_t *p_mpu_regs = &mpu_regs; int irq = 0, dma8 = 0, dma16 = 0; rc = sb_get_res(device, &p_sb_regs, &p_mpu_regs, &irq, &dma8, &dma16); if (rc != EOK) { ddf_log_error("Failed to get resources: %s.", str_error(rc)); goto error; } sb16_irq_code(p_sb_regs, dma8, dma16, irq_cmds, irq_ranges); irq_code_t irq_code = { .cmdcount = irq_cmd_count, .cmds = irq_cmds, .rangecount = 1, .ranges = irq_ranges }; rc = register_interrupt_handler(device, irq, irq_handler, &irq_code); if (rc != EOK) { ddf_log_error("Failed to register irq handler: %s.", str_error(rc)); goto error; } handler_regd = true; rc = sb_enable_interrupts(device); if (rc != EOK) { ddf_log_error("Failed to enable interrupts: %s.", str_error(rc)); goto error; } rc = sb16_init_sb16(soft_state, p_sb_regs, device, dma8, dma16); if (rc != EOK) { ddf_log_error("Failed to init sb16 driver: %s.", str_error(rc)); goto error; } rc = sb16_init_mpu(soft_state, p_mpu_regs); if (rc == EOK) { ddf_fun_t *mpu_fun = ddf_fun_create(device, fun_exposed, "midi"); if (mpu_fun) { rc = ddf_fun_bind(mpu_fun); if (rc != EOK) ddf_log_error( "Failed to bind midi function: %s.", str_error(rc)); } else { ddf_log_error("Failed to create midi function."); } } else { ddf_log_warning("Failed to init mpu driver: %s.", str_error(rc)); } /* MPU state does not matter */ return EOK; error: if (handler_regd) unregister_interrupt_handler(device, irq); return rc; } static int sb_get_res(ddf_dev_t *device, addr_range_t **pp_sb_regs, addr_range_t **pp_mpu_regs, int *irq, int *dma8, int *dma16) { assert(device); async_sess_t *parent_sess = devman_parent_device_connect( ddf_dev_get_handle(device), IPC_FLAG_BLOCKING); if (!parent_sess) return ENOMEM; hw_res_list_parsed_t hw_res; hw_res_list_parsed_init(&hw_res); const int ret = hw_res_get_list_parsed(parent_sess, &hw_res, 0); async_hangup(parent_sess); if (ret != EOK) { return ret; } /* 1x IRQ, 1-2x DMA(8,16), 1-2x IO (MPU is separate). */ if (hw_res.irqs.count != 1 || (hw_res.io_ranges.count != 1 && hw_res.io_ranges.count != 2) || (hw_res.dma_channels.count != 1 && hw_res.dma_channels.count != 2)) { hw_res_list_parsed_clean(&hw_res); return EINVAL; } if (irq) *irq = hw_res.irqs.irqs[0]; if (dma8) { if (hw_res.dma_channels.channels[0] < 4) { *dma8 = hw_res.dma_channels.channels[0]; } else { if (hw_res.dma_channels.count == 2 && hw_res.dma_channels.channels[1] < 4) { *dma8 = hw_res.dma_channels.channels[1]; } } } if (dma16) { if (hw_res.dma_channels.channels[0] > 4) { *dma16 = hw_res.dma_channels.channels[0]; } else { if (hw_res.dma_channels.count == 2 && hw_res.dma_channels.channels[1] > 4) { *dma16 = hw_res.dma_channels.channels[1]; } } } if (hw_res.io_ranges.count == 1) { if (pp_sb_regs && *pp_sb_regs) **pp_sb_regs = hw_res.io_ranges.ranges[0]; if (pp_mpu_regs) *pp_mpu_regs = NULL; } else { const int sb = (hw_res.io_ranges.ranges[0].size >= sizeof(sb16_regs_t)) ? 0 : 1; const int mpu = 1 - sb; if (pp_sb_regs && *pp_sb_regs) **pp_sb_regs = hw_res.io_ranges.ranges[sb]; if (pp_mpu_regs && *pp_mpu_regs) **pp_mpu_regs = hw_res.io_ranges.ranges[mpu]; } return EOK; }