diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/virtex/irq/irq_init.c')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/virtex/irq/irq_init.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/c/src/lib/libbsp/powerpc/virtex/irq/irq_init.c b/c/src/lib/libbsp/powerpc/virtex/irq/irq_init.c deleted file mode 100644 index 55194cb1e6..0000000000 --- a/c/src/lib/libbsp/powerpc/virtex/irq/irq_init.c +++ /dev/null @@ -1,167 +0,0 @@ -/*===============================================================*\ -| Project: RTEMS virtex BSP | -+-----------------------------------------------------------------+ -| Partially based on the code references which are named below. | -| Adaptions, modifications, enhancements and any recent parts of | -| the code are: | -| Copyright (c) 2007 | -| Embedded Brains GmbH | -| Obere Lagerstr. 30 | -| D-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. | -| | -+-----------------------------------------------------------------+ -| this file contains the irq controller handler | -\*===============================================================*/ - -/* Content moved from opbintctrl.c: - * - * This file contains definitions and declarations for the - * Xilinx Off Processor Bus (OPB) Interrupt Controller - * - * Author: Keith Robertson <kjrobert@alumni.uwaterloo.ca> - * COPYRIGHT (c) 2005 Linn Products Ltd, Scotland. - * - * 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 <bsp.h> -#include <bsp/irq.h> -#include <bsp/irq-generic.h> -#include <bsp/vectors.h> - -#include <libcpu/powerpc-utility.h> - -/* - * Acknowledge a mask of interrupts. - */ -static void set_iar(uint32_t mask) -{ - *((volatile uint32_t *) (OPB_INTC_BASE + OPB_INTC_IAR)) = mask; -} - -/* - * Set IER state. Used to (dis)enable a mask of vectors. - * If you only have to do one, use enable/disable_vector. - */ -static void set_ier(uint32_t mask) -{ - *((volatile uint32_t *) (OPB_INTC_BASE + OPB_INTC_IER)) = mask; -} - -/* - * Retrieve contents of Interrupt Pending Register - */ -static uint32_t get_ipr(void) -{ - uint32_t c = *((volatile uint32_t *) (OPB_INTC_BASE + OPB_INTC_IPR)); - return c; -} - -static void BSP_irq_enable_at_opbintc (rtems_irq_number irqnum) -{ - *((volatile uint32_t *) (OPB_INTC_BASE + OPB_INTC_SIE)) - = 1 << (irqnum - BSP_OPBINTC_IRQ_LOWEST_OFFSET); -} - -static void BSP_irq_disable_at_opbintc (rtems_irq_number irqnum) -{ - *((volatile uint32_t *) (OPB_INTC_BASE + OPB_INTC_CIE)) - = 1 << (irqnum - BSP_OPBINTC_IRQ_LOWEST_OFFSET); -} - -/* - * IRQ Handler: this is called from the primary exception dispatcher - */ -static void BSP_irq_handle_at_opbintc(void) -{ - uint32_t ipr; - - /* Get pending interrupts */ - ipr = get_ipr(); - - if (ipr != 0) { - /* Acknowledge all pending interrupts now and service them afterwards */ - set_iar(ipr); - - do { - /* Get highest priority pending interrupt */ - uint32_t i = 31 - ppc_count_leading_zeros(ipr); - - ipr &= ~(1U << i); - - bsp_interrupt_handler_dispatch(i+BSP_OPBINTC_IRQ_LOWEST_OFFSET); - } while (ipr != 0); - } -} - -/* - * activate the interrupt controller - */ -static void opb_intc_init(void) -{ - uint32_t i, mask = 0; - - /* mask off all interrupts */ - set_ier(0x0); - - for (i = 0; i < OPB_INTC_IRQ_MAX; i++) { - mask |= (1 << i); - } - - /* make sure interupt status register is clear before we enable the interrupt controller */ - *((volatile uint32_t *) (OPB_INTC_BASE + OPB_INTC_ISR)) = 0; - - /* acknowledge all interrupt sources */ - set_iar(mask); - - /* Turn on normal hardware operation of interrupt controller */ - *((volatile uint32_t *) (OPB_INTC_BASE + OPB_INTC_MER)) = - (OPB_INTC_MER_HIE); - - /* Enable master interrupt switch for the interrupt controller */ - *((volatile uint32_t *) (OPB_INTC_BASE + OPB_INTC_MER)) = - (OPB_INTC_MER_HIE | OPB_INTC_MER_ME); -} - -void bsp_interrupt_vector_enable(rtems_vector_number vector) -{ - bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector)); - - if (BSP_IS_OPBINTC_IRQ(vector)) { - BSP_irq_enable_at_opbintc(vector); - } -} - -void bsp_interrupt_vector_disable(rtems_vector_number vector) -{ - bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector)); - - if (BSP_IS_OPBINTC_IRQ(vector)) { - BSP_irq_disable_at_opbintc(vector); - } -} - -static int C_dispatch_irq_handler(BSP_Exception_frame *frame, unsigned int excNum) -{ - BSP_irq_handle_at_opbintc(); - - return 0; -} - -rtems_status_code bsp_interrupt_facility_initialize(void) -{ - opb_intc_init(); - - ppc_exc_set_handler(ASM_EXT_VECTOR, C_dispatch_irq_handler); - - return RTEMS_SUCCESSFUL; -} |