diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/virtex4/irq/irq_init.c')
-rw-r--r-- | c/src/lib/libbsp/powerpc/virtex4/irq/irq_init.c | 326 |
1 files changed, 0 insertions, 326 deletions
diff --git a/c/src/lib/libbsp/powerpc/virtex4/irq/irq_init.c b/c/src/lib/libbsp/powerpc/virtex4/irq/irq_init.c deleted file mode 100644 index 5feafaf4b6..0000000000 --- a/c/src/lib/libbsp/powerpc/virtex4/irq/irq_init.c +++ /dev/null @@ -1,326 +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 | -\*===============================================================*/ -#include <libcpu/spr.h> -#include <bsp/irq.h> -#include <bsp.h> -#include <rtems/bspIo.h> -#include <rtems/powerpc/powerpc.h> -#include <bsp/vectors.h> - -static rtems_irq_connect_data rtemsIrqTbl[BSP_IRQ_NUMBER]; -rtems_irq_connect_data *BSP_rtems_irq_tbl; -rtems_irq_global_settings* BSP_rtems_irq_config; - -/*********************************************************** - * dummy functions for on/off/isOn calls - * these functions just do nothing fulfill the semantic - * requirements to enable/disable a certain interrupt or exception - */ -static void BSP_irq_nop_func(const rtems_irq_connect_data *unused) -{ - /* - * nothing to do - */ -} - -static void BSP_irq_nop_hdl(void *hdl) -{ - /* - * nothing to do - */ -} - -static int BSP_irq_isOn_func(const rtems_irq_connect_data *unused) -{ - /* - * nothing to do - */ - return 0; -} - -/*********************************************************** - * interrupt handler and its enable/disable functions - ***********************************************************/ - -/*********************************************************** - * functions to enable/disable/query external/critical interrupts - */ -void BSP_irqexc_on_fnc(const rtems_irq_connect_data *conn_data) -{ - uint32_t msr_value; - /* - * get current MSR value - */ - _CPU_MSR_GET(msr_value); - - msr_value |= PPC_MSR_EE; - _CPU_MSR_SET(msr_value); -} - -void BSP_irqexc_off_fnc(const rtems_irq_connect_data *unused) -{ - uint32_t msr_value; - /* - * get current MSR value - */ - _CPU_MSR_GET(msr_value); - - msr_value &= ~PPC_MSR_EE; - _CPU_MSR_SET(msr_value); -} - -/*********************************************************** - * High level IRQ handler called from shared_raw_irq_code_entry - */ -static int C_dispatch_irq_handler (BSP_Exception_frame *frame, unsigned int excNum) -{ - /* - * Handle interrupt - */ - switch(excNum) { - case ASM_EXT_VECTOR: - BSP_rtems_irq_tbl[BSP_EXT].hdl(BSP_rtems_irq_tbl[BSP_EXT].handle); - break; - case ASM_BOOKE_DEC_VECTOR: - BSP_rtems_irq_tbl[BSP_PIT].hdl(BSP_rtems_irq_tbl[BSP_PIT].handle); - break; -#if 0 /* Critical interrupts not yet supported */ - case ASM_BOOKE_CRIT_VECTOR: - BSP_rtems_irq_tbl[BSP_CRIT].hdl(BSP_rtems_irq_tbl[BSP_CRIT].handle); - break; -#endif - } - - return 0; -} - -/*********************************************************** - * functions to set/get/remove interrupt handlers - ***********************************************************/ -int BSP_install_rtems_irq_handler (const rtems_irq_connect_data* irq) -{ - rtems_interrupt_level level; - - /* - * check for valid irq name - * if invalid, print error and return 0 - */ - if (!BSP_IS_VALID_IRQ(irq->name)) { - printk("Invalid interrupt vector %d\n",irq->name); - return 0; - } - - /* - * disable interrupts - */ - rtems_interrupt_disable(level); - - /* - * check, that default handler is installed now - */ - if (rtemsIrqTbl[irq->name].hdl != BSP_rtems_irq_config->defaultEntry.hdl) { - rtems_interrupt_enable(level); - printk("IRQ vector %d already connected\n",irq->name); - return 0; - } - - /* - * store new handler data - */ - rtemsIrqTbl[irq->name] = *irq; - - /* - * call "on" function to enable interrupt at device - */ - irq->on(irq); - - /* - * reenable interrupts - */ - rtems_interrupt_enable(level); - - return 1; -} - -int BSP_get_current_rtems_irq_handler (rtems_irq_connect_data* irq) -{ - rtems_interrupt_level level; - - /* - * check for valid IRQ name - */ - if (!BSP_IS_VALID_IRQ(irq->name)) { - return 0; - } - rtems_interrupt_disable(level); - - /* - * return current IRQ entry - */ - *irq = rtemsIrqTbl[irq->name]; - rtems_interrupt_enable(level); - return 1; -} - -int BSP_remove_rtems_irq_handler (const rtems_irq_connect_data* irq) -{ - rtems_interrupt_level level; - - /* - * check for valid IRQ name - */ - if (!BSP_IS_VALID_IRQ(irq->name)) { - return 0; - } - rtems_interrupt_disable(level); - - /* - * check, that specified handler is really connected now - */ - if (rtemsIrqTbl[irq->name].hdl != irq->hdl) { - rtems_interrupt_enable(level); - return 0; - } - - /* - * disable interrupt at source - */ - irq->off(irq); - - /* - * restore default interrupt handler - */ - rtemsIrqTbl[irq->name] = BSP_rtems_irq_config->defaultEntry; - - /* - * reenable interrupts - */ - rtems_interrupt_enable(level); - - return 1; -} - -/*********************************************************** - * functions to set/get the basic interrupt management setup - ***********************************************************/ -/* - * (Re) get info on current RTEMS interrupt management. - */ -int BSP_rtems_irq_mngt_get(rtems_irq_global_settings** ret_ptr) -{ - *ret_ptr = BSP_rtems_irq_config; - return 0; -} - - -/* - * set management stuff - */ -int BSP_rtems_irq_mngt_set(rtems_irq_global_settings* config) -{ - int i; - rtems_interrupt_level level; - - rtems_interrupt_disable(level); - - /* - * store given configuration - */ - BSP_rtems_irq_config = config; - BSP_rtems_irq_tbl = BSP_rtems_irq_config->irqHdlTbl; - - /* - * store any irq-like processor exceptions - */ - for (i = BSP_PROCESSOR_IRQ_LOWEST_OFFSET; - i < BSP_PROCESSOR_IRQ_MAX_OFFSET; - i++) { - if (BSP_rtems_irq_tbl[i].hdl != config->defaultEntry.hdl) { - if (BSP_rtems_irq_tbl[i].on != NULL) { - BSP_rtems_irq_tbl[i].on - (&(BSP_rtems_irq_tbl[i])); - } - } - else { - if (BSP_rtems_irq_tbl[i].off != NULL) { - BSP_rtems_irq_tbl[i].off - (&(BSP_rtems_irq_tbl[i])); - } - } - } - rtems_interrupt_enable(level); - return 1; -} - -/* - * dummy for an empty IRQ handler entry - */ -static rtems_irq_connect_data emptyIrq = { - 0, /* IRQ Name */ - BSP_irq_nop_hdl, /* handler function */ - NULL, /* handle passed to handler */ - BSP_irq_nop_func, /* on function */ - BSP_irq_nop_func, /* off function */ - BSP_irq_isOn_func /* isOn function */ -}; - -static rtems_irq_global_settings initialConfig = { - BSP_IRQ_NUMBER, /* IRQ Number */ - { 0, /* IRQ Name */ - BSP_irq_nop_hdl, /* handler function */ - NULL, /* handle passed to handler */ - BSP_irq_nop_func, /* on function */ - BSP_irq_nop_func, /* off function */ - BSP_irq_isOn_func /* isOn function */ - }, /* emptyIrq */ - rtemsIrqTbl, /* irqHdlTbl */ - 0, /* irqBase */ - NULL /* irqPrioTbl */ -}; - -void BSP_rtems_irq_mngt_init(unsigned cpuId) -{ - int i; - - /* - * connect all exception vectors needed - */ - ppc_exc_set_handler(ASM_EXT_VECTOR, C_dispatch_irq_handler); - ppc_exc_set_handler(ASM_BOOKE_DEC_VECTOR, C_dispatch_irq_handler); - - /* - * setup interrupt handlers table - */ - for (i = 0; - i < BSP_IRQ_NUMBER; - i++) { - rtemsIrqTbl[i] = emptyIrq; - rtemsIrqTbl[i].name = i; - } - - /* - * initialize interrupt management - */ - if (!BSP_rtems_irq_mngt_set(&initialConfig)) { - rtems_panic("Unable to initialize RTEMS interrupt Management!!! System locked\n"); - } -} |