diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/psim/irq/irq.h')
-rw-r--r-- | c/src/lib/libbsp/powerpc/psim/irq/irq.h | 265 |
1 files changed, 29 insertions, 236 deletions
diff --git a/c/src/lib/libbsp/powerpc/psim/irq/irq.h b/c/src/lib/libbsp/powerpc/psim/irq/irq.h index 26a86df9b9..45eab0c561 100644 --- a/c/src/lib/libbsp/powerpc/psim/irq/irq.h +++ b/c/src/lib/libbsp/powerpc/psim/irq/irq.h @@ -18,9 +18,11 @@ * irq.h,v 1.2.4.2 2003/09/04 18:45:20 joel Exp */ -#ifndef LIBBSP_POWERPC_MCP750_IRQ_IRQ_H -#define LIBBSP_POWERPC_MCP750_IRQ_IRQ_H +#ifndef LIBBSP_POWERPC_IRQ_H +#define LIBBSP_POWERPC_IRQ_H +#define BSP_SHARED_HANDLER_SUPPORT 1 +#include <rtems/irq.h> /* * 8259 edge/level control definitions at VIA @@ -59,280 +61,71 @@ #ifndef ASM - /* * Symblolic IRQ names and related definitions. */ -typedef enum { /* Base vector for our ISA IRQ handlers. */ - BSP_ISA_IRQ_VECTOR_BASE = BSP_ASM_IRQ_VECTOR_BASE, +#define BSP_ISA_IRQ_VECTOR_BASE (BSP_ASM_IRQ_VECTOR_BASE) /* * ISA IRQ handler related definitions */ - BSP_ISA_IRQ_NUMBER = 16, - BSP_ISA_IRQ_LOWEST_OFFSET = 0, - BSP_ISA_IRQ_MAX_OFFSET = BSP_ISA_IRQ_LOWEST_OFFSET + BSP_ISA_IRQ_NUMBER - 1, +#define BSP_ISA_IRQ_NUMBER (16) +#define BSP_ISA_IRQ_LOWEST_OFFSET (0) +#define BSP_ISA_IRQ_MAX_OFFSET (BSP_ISA_IRQ_LOWEST_OFFSET + BSP_ISA_IRQ_NUMBER-1) /* * PCI IRQ handlers related definitions * CAUTION : BSP_PCI_IRQ_LOWEST_OFFSET should be equal to OPENPIC_VEC_SOURCE */ - BSP_PCI_IRQ_NUMBER = 16, - BSP_PCI_IRQ_LOWEST_OFFSET = BSP_ISA_IRQ_NUMBER, - BSP_PCI_IRQ_MAX_OFFSET = BSP_PCI_IRQ_LOWEST_OFFSET + BSP_PCI_IRQ_NUMBER - 1, +#define BSP_PCI_IRQ_NUMBER (16) +#define BSP_PCI_IRQ_LOWEST_OFFSET (BSP_ISA_IRQ_NUMBER) +#define BSP_PCI_IRQ_MAX_OFFSET (BSP_PCI_IRQ_LOWEST_OFFSET+BSP_PCI_IRQ_NUMBER-1) /* * PowerPc exceptions handled as interrupt where a rtems managed interrupt * handler might be connected */ - BSP_PROCESSOR_IRQ_NUMBER = 1, - BSP_PROCESSOR_IRQ_LOWEST_OFFSET = BSP_PCI_IRQ_MAX_OFFSET + 1, - BSP_PROCESSOR_IRQ_MAX_OFFSET = BSP_PROCESSOR_IRQ_LOWEST_OFFSET + BSP_PROCESSOR_IRQ_NUMBER - 1, +#define BSP_PROCESSOR_IRQ_NUMBER (1) +#define BSP_PROCESSOR_IRQ_LOWEST_OFFSET (BSP_PCI_IRQ_MAX_OFFSET + 1) +#define BSP_PROCESSOR_IRQ_MAX_OFFSET (BSP_PROCESSOR_IRQ_LOWEST_OFFSET+BSP_PROCESSOR_IRQ_NUMBER-1) /* Misc vectors for OPENPIC irqs (IPI, timers) */ - BSP_MISC_IRQ_NUMBER = 8, - BSP_MISC_IRQ_LOWEST_OFFSET = BSP_PROCESSOR_IRQ_MAX_OFFSET + 1, - BSP_MISC_IRQ_MAX_OFFSET = BSP_MISC_IRQ_LOWEST_OFFSET + BSP_MISC_IRQ_NUMBER - 1, +#define BSP_MISC_IRQ_NUMBER (8) +#define BSP_MISC_IRQ_LOWEST_OFFSET (BSP_PROCESSOR_IRQ_MAX_OFFSET + 1) +#define BSP_MISC_IRQ_MAX_OFFSET (BSP_MISC_IRQ_LOWEST_OFFSET+BSP_MISC_IRQ_NUMBER-1) /* * Summary */ - BSP_IRQ_NUMBER = BSP_MISC_IRQ_MAX_OFFSET + 1, - BSP_LOWEST_OFFSET = BSP_ISA_IRQ_LOWEST_OFFSET, - BSP_MAX_OFFSET = BSP_MISC_IRQ_MAX_OFFSET, +#define BSP_IRQ_NUMBER (BSP_MISC_IRQ_MAX_OFFSET + 1) +#define BSP_LOWEST_OFFSET (BSP_ISA_IRQ_LOWEST_OFFSET) +#define BSP_MAX_OFFSET (BSP_MISC_IRQ_MAX_OFFSET) /* * Some ISA IRQ symbolic name definition */ - BSP_ISA_PERIODIC_TIMER = 0, +#define BSP_ISA_PERIODIC_TIMER (0) - BSP_ISA_KEYBOARD = 1, +#define BSP_ISA_KEYBOARD (1) - BSP_ISA_UART_COM2_IRQ = 3, +#define BSP_ISA_UART_COM2_IRQ (3) - BSP_ISA_UART_COM1_IRQ = 4, +#define BSP_ISA_UART_COM1_IRQ (4) - BSP_ISA_RT_TIMER1 = 8, +#define BSP_ISA_RT_TIMER1 (8) - BSP_ISA_RT_TIMER3 = 10, +#define BSP_ISA_RT_TIMER3 (10) /* * Some PCI IRQ symbolic name definition */ - BSP_PCI_IRQ0 = BSP_PCI_IRQ_LOWEST_OFFSET, - BSP_PCI_ISA_BRIDGE_IRQ = BSP_PCI_IRQ0, +#define BSP_PCI_IRQ0 (BSP_PCI_IRQ_LOWEST_OFFSET) +#define BSP_PCI_ISA_BRIDGE_IRQ (BSP_PCI_IRQ0) /* * Some Processor execption handled as rtems IRQ symbolic name definition */ - BSP_DECREMENTER = BSP_PROCESSOR_IRQ_LOWEST_OFFSET - -}rtems_irq_symbolic_name; - - +#define BSP_DECREMENTER (BSP_PROCESSOR_IRQ_LOWEST_OFFSET) - -/* - * Type definition for RTEMS managed interrupts - */ -typedef unsigned char rtems_irq_prio; typedef unsigned short rtems_i8259_masks; - extern volatile rtems_i8259_masks i8259s_cache; -struct __rtems_irq_connect_data__; /* forward declaratiuon */ - -typedef void *rtems_irq_hdl_param; -typedef void (*rtems_irq_hdl) (rtems_irq_hdl_param); -typedef void (*rtems_irq_enable) (const struct __rtems_irq_connect_data__*); -typedef void (*rtems_irq_disable) (const struct __rtems_irq_connect_data__*); -typedef int (*rtems_irq_is_enabled) (const struct __rtems_irq_connect_data__*); - -typedef struct __rtems_irq_connect_data__ { - /* - * IRQ line - */ - rtems_irq_symbolic_name name; - /* - * handler. See comment on handler properties below in function prototype. - */ - rtems_irq_hdl hdl; - /* - * Handler handle to store private data - */ - rtems_irq_hdl_param handle; - /* - * function for enabling interrupts at device level (ONLY!). - * The BSP code will automatically enable it at i8259s level and openpic level. - * RATIONALE : anyway such code has to exist in current driver code. - * It is usually called immediately AFTER connecting the interrupt handler. - * RTEMS may well need such a function when restoring normal interrupt - * processing after a debug session. - * - */ - rtems_irq_enable on; - /* - * function for disabling interrupts at device level (ONLY!). - * The code will disable it at i8259s level. RATIONALE : anyway - * such code has to exist for clean shutdown. It is usually called - * BEFORE disconnecting the interrupt. RTEMS may well need such - * a function when disabling normal interrupt processing for - * a debug session. May well be a NOP function. - */ - rtems_irq_disable off; - /* - * function enabling to know what interrupt may currently occur - * if someone manipulates the i8259s interrupt mask without care... - */ - rtems_irq_is_enabled isOn; - /* - * Set to -1 for vectors forced to have only 1 handler - */ - void *next_handler; - -}rtems_irq_connect_data; - -typedef struct { - /* - * size of all the table fields (*Tbl) described below. - */ - unsigned int irqNb; - /* - * Default handler used when disconnecting interrupts. - */ - rtems_irq_connect_data defaultEntry; - /* - * Table containing initials/current value. - */ - rtems_irq_connect_data* irqHdlTbl; - /* - * actual value of BSP_ISA_IRQ_VECTOR_BASE... - */ - rtems_irq_symbolic_name irqBase; - /* - * software priorities associated with interrupts. - * if irqPrio [i] > intrPrio [j] it means that - * interrupt handler hdl connected for interrupt name i - * will not be interrupted by the handler connected for interrupt j - * The interrupt source will be physically masked at i8259 level. - */ - rtems_irq_prio* irqPrioTbl; -}rtems_irq_global_settings; - - - - -/*-------------------------------------------------------------------------+ -| Function Prototypes. -+--------------------------------------------------------------------------*/ -/* - * ------------------------ Intel 8259 (or emulation) Mngt Routines ------- - */ - -/* - * function to disable a particular irq at 8259 level. After calling - * this function, even if the device asserts the interrupt line it will - * not be propagated further to the processor - */ -int BSP_irq_disable_at_i8259s (const rtems_irq_symbolic_name irqLine); -/* - * function to enable a particular irq at 8259 level. After calling - * this function, if the device asserts the interrupt line it will - * be propagated further to the processor - */ -int BSP_irq_enable_at_i8259s (const rtems_irq_symbolic_name irqLine); -/* - * function to acknoledge a particular irq at 8259 level. After calling - * this function, if a device asserts an enabled interrupt line it will - * be propagated further to the processor. Mainly usefull for people - * writting raw handlers as this is automagically done for rtems managed - * handlers. - */ -int BSP_irq_ack_at_i8259s (const rtems_irq_symbolic_name irqLine); -/* - * function to check if a particular irq is enabled at 8259 level. After calling - */ -int BSP_irq_enabled_at_i8259s (const rtems_irq_symbolic_name irqLine); -/* - * ------------------------ RTEMS Single Irq Handler Mngt Routines ---------------- - */ -/* - * function to connect a particular irq handler. This hanlder will NOT be called - * directly as the result of the corresponding interrupt. Instead, a RTEMS - * irq prologue will be called that will : - * - * 1) save the C scratch registers, - * 2) switch to a interrupt stack if the interrupt is not nested, - * 3) store the current i8259s' interrupt masks - * 4) modify them to disable the current interrupt at 8259 level (and may - * be others depending on software priorities) - * 5) aknowledge the i8259s', - * 6) demask the processor, - * 7) call the application handler - * - * As a result the hdl function provided - * - * a) can perfectly be written is C, - * b) may also well directly call the part of the RTEMS API that can be used - * from interrupt level, - * c) It only responsible for handling the jobs that need to be done at - * the device level including (aknowledging/re-enabling the interrupt at device, - * level, getting the data,...) - * - * When returning from the function, the following will be performed by - * the RTEMS irq epilogue : - * - * 1) masks the interrupts again, - * 2) restore the original i8259s' interrupt masks - * 3) switch back on the orinal stack if needed, - * 4) perform rescheduling when necessary, - * 5) restore the C scratch registers... - * 6) restore initial execution flow - * - */ -int BSP_install_rtems_irq_handler (const rtems_irq_connect_data*); -int BSP_install_rtems_shared_irq_handler (const rtems_irq_connect_data*); - -#define BSP_SHARED_HANDLER_SUPPORT 1 - -/* - * function to get the current RTEMS irq handler for ptr->name. It enables to - * define hanlder chain... - */ -int BSP_get_current_rtems_irq_handler (rtems_irq_connect_data* ptr); -/* - * function to get disconnect the RTEMS irq handler for ptr->name. - * This function checks that the value given is the current one for safety reason. - * The user can use the previous function to get it. - */ -int BSP_remove_rtems_irq_handler (const rtems_irq_connect_data*); - -/* - * ------------------------ RTEMS Global Irq Handler Mngt Routines ---------------- - */ -/* - * (Re) Initialize the RTEMS interrupt management. - * - * The result of calling this function will be the same as if each individual - * handler (config->irqHdlTbl[i].hdl) different from "config->defaultEntry.hdl" - * has been individualy connected via - * BSP_install_rtems_irq_handler(&config->irqHdlTbl[i]) - * And each handler currently equal to config->defaultEntry.hdl - * has been previously disconnected via - * BSP_remove_rtems_irq_handler (&config->irqHdlTbl[i]) - * - * This is to say that all information given will be used and not just - * only the space. - * - * CAUTION : the various table address contained in config will be used - * directly by the interrupt mangement code in order to save - * data size so they must stay valid after the call => they should - * not be modified or declared on a stack. - */ -int BSP_rtems_irq_mngt_set(rtems_irq_global_settings* config); -/* - * (Re) get info on current RTEMS interrupt management. - */ -int BSP_rtems_irq_mngt_get(rtems_irq_global_settings**); - -extern void BSP_rtems_irq_mng_init(unsigned cpuId); -extern void BSP_i8259s_init(void); #endif #endif |