diff options
Diffstat (limited to 'c/src/lib/libcpu/powerpc/mpc55xx/irq/irq.c')
| -rw-r--r-- | c/src/lib/libcpu/powerpc/mpc55xx/irq/irq.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/c/src/lib/libcpu/powerpc/mpc55xx/irq/irq.c b/c/src/lib/libcpu/powerpc/mpc55xx/irq/irq.c deleted file mode 100644 index 53c30f171e..0000000000 --- a/c/src/lib/libcpu/powerpc/mpc55xx/irq/irq.c +++ /dev/null @@ -1,165 +0,0 @@ -/** - * @file - * - * @ingroup mpc55xx - * - * @brief Source file for MPC55XX interrupt support. - */ - -/* - * Copyright (c) 2008-2012 embedded brains GmbH. All rights reserved. - * - * embedded brains GmbH - * Obere Lagerstr. 30 - * 82178 Puchheim - * Germany - * <rtems@embedded-brains.de> - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - */ - -#include <mpc55xx/regs.h> - -#include <libcpu/powerpc-utility.h> - -#include <bsp/irq.h> -#include <bsp/vectors.h> -#include <bsp/irq-generic.h> - -#define RTEMS_STATUS_CHECKS_USE_PRINTK - -#include <rtems/status-checks.h> - -/** - * @brief Returns the priority @a priority of IRQ @a vector from the INTC. - */ -rtems_status_code mpc55xx_intc_get_priority( rtems_vector_number vector, unsigned *priority) -{ - if (MPC55XX_IRQ_IS_VALID( vector)) { - *priority = INTC.PSR [vector].B.PRI; - return RTEMS_SUCCESSFUL; - } else { - *priority = MPC55XX_INTC_INVALID_PRIORITY; - return RTEMS_INVALID_NUMBER; - } -} - -/** - * @brief Sets the priority of IRQ @a vector to @a priority at the INTC. - */ -rtems_status_code mpc55xx_intc_set_priority( rtems_vector_number vector, unsigned priority) -{ - if (MPC55XX_IRQ_IS_VALID( vector) && MPC55XX_INTC_IS_VALID_PRIORITY( priority)) { - INTC.PSR [vector].B.PRI = priority; - if (INTC.PSR [vector].B.PRI == priority) { - return RTEMS_SUCCESSFUL; - } else { - return RTEMS_IO_ERROR; - } - } else { - return RTEMS_INVALID_NUMBER; - } -} - -/** - * @brief Raises the software IRQ with number @a vector. - */ -rtems_status_code mpc55xx_intc_raise_software_irq( rtems_vector_number vector) -{ - if (MPC55XX_IRQ_IS_SOFTWARE( vector)) { - INTC.SSCIR [vector].B.SET = 1; - return RTEMS_SUCCESSFUL; - } else { - return RTEMS_INVALID_NUMBER; - } -} - -/** - * @brief Clears the software IRQ with number @a vector. - */ -rtems_status_code mpc55xx_intc_clear_software_irq( rtems_vector_number vector) -{ - if (MPC55XX_IRQ_IS_SOFTWARE( vector)) { - INTC.SSCIR [vector].B.CLR = 1; - return RTEMS_SUCCESSFUL; - } else { - return RTEMS_INVALID_NUMBER; - } -} - -/** - * @brief Installs interrupt handler and sets priority. - */ -rtems_status_code mpc55xx_interrupt_handler_install( - rtems_vector_number vector, - const char *info, - rtems_option options, - unsigned priority, - rtems_interrupt_handler handler, - void *arg -) -{ - if (MPC55XX_IRQ_IS_VALID( vector) && MPC55XX_INTC_IS_VALID_PRIORITY( priority)) { - rtems_status_code sc = RTEMS_SUCCESSFUL; - - sc = rtems_interrupt_handler_install( vector, info, options, handler, arg); - RTEMS_CHECK_SC( sc, "Install interrupt handler"); - - return mpc55xx_intc_set_priority( vector, priority); - } else { - return RTEMS_INVALID_NUMBER; - } -} - -void bsp_interrupt_dispatch(uintptr_t exception_number) -{ - /* Acknowledge interrupt request */ - rtems_vector_number vector = INTC.IACKR.B.INTVEC; - - /* Save machine state and enable external exceptions */ - uint32_t msr = ppc_external_exceptions_enable(); - - /* Dispatch interrupt handlers */ - bsp_interrupt_handler_dispatch( vector); - - /* Restore machine state */ - ppc_external_exceptions_disable( msr); - - /* End of interrupt */ - INTC.EOIR.R = 1; -} - -rtems_status_code bsp_interrupt_facility_initialize(void) -{ - rtems_vector_number vector; - - /* Initialize interrupt controller */ - - /* Disable all interrupts */ - for (vector = MPC55XX_IRQ_MIN; vector <= MPC55XX_IRQ_MAX; ++vector) { - INTC.PSR [vector].B.PRI = MPC55XX_INTC_DISABLED_PRIORITY; - } - - /* Software vector mode */ - INTC.MCR.B.VTES = 0; - INTC.MCR.B.HVEN = 0; - - /* Set current priority to 0 */ - INTC.CPR.B.PRI = 0; - - return RTEMS_SUCCESSFUL; -} - -void bsp_interrupt_vector_enable( rtems_vector_number vector) -{ - bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector)); - mpc55xx_intc_set_priority( vector, MPC55XX_INTC_DEFAULT_PRIORITY); -} - -void bsp_interrupt_vector_disable( rtems_vector_number vector) -{ - bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector)); - mpc55xx_intc_set_priority( vector, MPC55XX_INTC_DISABLED_PRIORITY); -} |