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authorJoel Sherrill <joel.sherrill@OARcorp.com>1999-12-02 14:00:01 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>1999-12-02 14:00:01 +0000
commite4ab88fde5ad3dc273fcee66b03c2892a2d80dac (patch)
treec8c25da3957d445fb7ef0b0e8ce03e629d30feb8 /c/src/lib/libbsp/powerpc/motorola_powerpc/irq
parentMerged of mcp750 and mvme2307 BSP by Eric Valette <valette@crf.canon.fr>. (diff)
downloadrtems-e4ab88fde5ad3dc273fcee66b03c2892a2d80dac.tar.bz2
Merged of mcp750 and mvme2307 BSP by Eric Valette <valette@crf.canon.fr>.
As part of this effort, the mpc750 libcpu code is now shared with the ppc6xx.
Diffstat (limited to 'c/src/lib/libbsp/powerpc/motorola_powerpc/irq')
-rw-r--r--c/src/lib/libbsp/powerpc/motorola_powerpc/irq/i8259.c152
-rw-r--r--c/src/lib/libbsp/powerpc/motorola_powerpc/irq/irq.c398
-rw-r--r--c/src/lib/libbsp/powerpc/motorola_powerpc/irq/irq.h319
-rw-r--r--c/src/lib/libbsp/powerpc/motorola_powerpc/irq/irq_asm.S322
-rw-r--r--c/src/lib/libbsp/powerpc/motorola_powerpc/irq/irq_init.c282
5 files changed, 0 insertions, 1473 deletions
diff --git a/c/src/lib/libbsp/powerpc/motorola_powerpc/irq/i8259.c b/c/src/lib/libbsp/powerpc/motorola_powerpc/irq/i8259.c
deleted file mode 100644
index 00ed073956..0000000000
--- a/c/src/lib/libbsp/powerpc/motorola_powerpc/irq/i8259.c
+++ /dev/null
@@ -1,152 +0,0 @@
-
-/*
- * This file contains the implementation of the function described in irq.h
- * related to Intel 8259 Programmable Interrupt controller.
- *
- * Copyright (C) 1998, 1999 valette@crf.canon.fr
- *
- * The license and distribution terms for this file may be
- * found in found in the file LICENSE in this distribution or at
- * http://www.OARcorp.com/rtems/license.html.
- *
- * $Id$
- */
-
-#include <bsp.h>
-#include <bsp/irq.h>
-
-/*-------------------------------------------------------------------------+
-| Cache for 1st and 2nd PIC IRQ line's status (enabled or disabled) register.
-+--------------------------------------------------------------------------*/
-/*
- * lower byte is interrupt mask on the master PIC.
- * while upper bits are interrupt on the slave PIC.
- */
-volatile rtems_i8259_masks i8259s_cache = 0xfffb;
-
-/*-------------------------------------------------------------------------+
-| Function: BSP_irq_disable_at_i8259s
-| Description: Mask IRQ line in appropriate PIC chip.
-| Global Variables: i8259s_cache
-| Arguments: vector_offset - number of IRQ line to mask.
-| Returns: Nothing.
-+--------------------------------------------------------------------------*/
-int BSP_irq_disable_at_i8259s (const rtems_irq_symbolic_name irqLine)
-{
- unsigned short mask;
- unsigned int level;
-
- if ( ((int)irqLine < BSP_ISA_IRQ_LOWEST_OFFSET) ||
- ((int)irqLine > BSP_ISA_IRQ_MAX_OFFSET)
- )
- return 1;
-
- _CPU_ISR_Disable(level);
-
- mask = 1 << irqLine;
- i8259s_cache |= mask;
-
- if (irqLine < 8)
- {
- outport_byte(PIC_MASTER_IMR_IO_PORT, i8259s_cache & 0xff);
- }
- else
- {
- outport_byte(PIC_SLAVE_IMR_IO_PORT, ((i8259s_cache & 0xff00) >> 8));
- }
- _CPU_ISR_Enable (level);
-
- return 0;
-}
-
-/*-------------------------------------------------------------------------+
-| Function: BSP_irq_enable_at_i8259s
-| Description: Unmask IRQ line in appropriate PIC chip.
-| Global Variables: i8259s_cache
-| Arguments: irqLine - number of IRQ line to mask.
-| Returns: Nothing.
-+--------------------------------------------------------------------------*/
-int BSP_irq_enable_at_i8259s (const rtems_irq_symbolic_name irqLine)
-{
- unsigned short mask;
- unsigned int level;
-
- if ( ((int)irqLine < BSP_ISA_IRQ_LOWEST_OFFSET) ||
- ((int)irqLine > BSP_ISA_IRQ_MAX_OFFSET )
- )
- return 1;
-
- _CPU_ISR_Disable(level);
-
- mask = ~(1 << irqLine);
- i8259s_cache &= mask;
-
- if (irqLine < 8)
- {
- outport_byte(PIC_MASTER_IMR_IO_PORT, i8259s_cache & 0xff);
- }
- else
- {
- outport_byte(PIC_SLAVE_IMR_IO_PORT, ((i8259s_cache & 0xff00) >> 8));
- }
- _CPU_ISR_Enable (level);
-
- return 0;
-} /* mask_irq */
-
-int BSP_irq_enabled_at_i8259s (const rtems_irq_symbolic_name irqLine)
-{
- unsigned short mask;
-
- if ( ((int)irqLine < BSP_ISA_IRQ_LOWEST_OFFSET) ||
- ((int)irqLine > BSP_ISA_IRQ_MAX_OFFSET)
- )
- return 1;
-
- mask = (1 << irqLine);
- return (~(i8259s_cache & mask));
-}
-
-
-/*-------------------------------------------------------------------------+
-| Function: BSP_irq_ack_at_i8259s
-| Description: Signal generic End Of Interrupt (EOI) to appropriate PIC.
-| Global Variables: None.
-| Arguments: irqLine - number of IRQ line to acknowledge.
-| Returns: Nothing.
-+--------------------------------------------------------------------------*/
-int BSP_irq_ack_at_i8259s (const rtems_irq_symbolic_name irqLine)
-{
- if (irqLine >= 8) {
- outport_byte(PIC_MASTER_COMMAND_IO_PORT, SLAVE_PIC_EOSI);
- outport_byte(PIC_SLAVE_COMMAND_IO_PORT, (PIC_EOSI | (irqLine - 8)));
- }
- else {
- outport_byte(PIC_MASTER_COMMAND_IO_PORT, (PIC_EOSI | irqLine));
- }
-
- return 0;
-
-} /* ackIRQ */
-
-void BSP_i8259s_init(void)
-{
- /*
- * init master 8259 interrupt controller
- */
- outport_byte(PIC_MASTER_COMMAND_IO_PORT, 0x11); /* Start init sequence */
- outport_byte(PIC_MASTER_IMR_IO_PORT, 0x00);/* Vector base = 0 */
- outport_byte(PIC_MASTER_IMR_IO_PORT, 0x04);/* edge tiggered, Cascade (slave) on IRQ2 */
- outport_byte(PIC_MASTER_IMR_IO_PORT, 0x01);/* Select 8086 mode */
- outport_byte(PIC_MASTER_IMR_IO_PORT, 0xFB); /* Mask all except cascade */
- /*
- * init slave interrupt controller
- */
- outport_byte(PIC_SLAVE_COMMAND_IO_PORT, 0x11); /* Start init sequence */
- outport_byte(PIC_SLAVE_IMR_IO_PORT, 0x08);/* Vector base = 8 */
- outport_byte(PIC_SLAVE_IMR_IO_PORT, 0x02);/* edge triggered, Cascade (slave) on IRQ2 */
- outport_byte(PIC_SLAVE_IMR_IO_PORT, 0x01); /* Select 8086 mode */
- outport_byte(PIC_SLAVE_IMR_IO_PORT, 0xFF); /* Mask all */
-
-}
-
diff --git a/c/src/lib/libbsp/powerpc/motorola_powerpc/irq/irq.c b/c/src/lib/libbsp/powerpc/motorola_powerpc/irq/irq.c
deleted file mode 100644
index 4c2226a48f..0000000000
--- a/c/src/lib/libbsp/powerpc/motorola_powerpc/irq/irq.c
+++ /dev/null
@@ -1,398 +0,0 @@
-/*
- *
- * This file contains the implementation of the function described in irq.h
- *
- * Copyright (C) 1998, 1999 valette@crf.canon.fr
- *
- * The license and distribution terms for this file may be
- * found in found in the file LICENSE in this distribution or at
- * http://www.OARcorp.com/rtems/license.html.
- *
- * $Id$
- */
-
-#include <bsp.h>
-#include <bsp/irq.h>
-#include <bsp/openpic.h>
-#include <rtems/score/thread.h>
-#include <rtems/score/apiext.h>
-#include <libcpu/raw_exception.h>
-#include <bsp/vectors.h>
-#include <libcpu/cpu.h>
-
-#define RAVEN_INTR_ACK_REG 0xfeff0030
-
-/*
- * pointer to the mask representing the additionnal irq vectors
- * that must be disabled when a particular entry is activated.
- * They will be dynamically computed from teh prioruty table given
- * in BSP_rtems_irq_mngt_set();
- * CAUTION : this table is accessed directly by interrupt routine
- * prologue.
- */
-rtems_i8259_masks irq_mask_or_tbl[BSP_IRQ_NUMBER];
-/*
- * default handler connected on each irq after bsp initialization
- */
-static rtems_irq_connect_data default_rtems_entry;
-
-/*
- * location used to store initial tables used for interrupt
- * management.
- */
-static rtems_irq_global_settings* internal_config;
-static rtems_irq_connect_data* rtems_hdl_tbl;
-
-/*
- * Check if IRQ is an ISA IRQ
- */
-static inline int is_isa_irq(const rtems_irq_symbolic_name irqLine)
-{
- return (((int) irqLine <= BSP_ISA_IRQ_MAX_OFFSET) &
- ((int) irqLine >= BSP_ISA_IRQ_LOWEST_OFFSET)
- );
-}
-
-/*
- * Check if IRQ is an OPENPIC IRQ
- */
-static inline int is_pci_irq(const rtems_irq_symbolic_name irqLine)
-{
- return (((int) irqLine <= BSP_PCI_IRQ_MAX_OFFSET) &
- ((int) irqLine >= BSP_PCI_IRQ_LOWEST_OFFSET)
- );
-}
-
-/*
- * Check if IRQ is a Porcessor IRQ
- */
-static inline int is_processor_irq(const rtems_irq_symbolic_name irqLine)
-{
- return (((int) irqLine <= BSP_PROCESSOR_IRQ_MAX_OFFSET) &
- ((int) irqLine >= BSP_PROCESSOR_IRQ_LOWEST_OFFSET)
- );
-}
-
-
-/*
- * ------------------------ RTEMS Irq helper functions ----------------
- */
-
-/*
- * Caution : this function assumes the variable "internal_config"
- * is already set and that the tables it contains are still valid
- * and accessible.
- */
-static void compute_i8259_masks_from_prio ()
-{
- unsigned int i;
- unsigned int j;
- /*
- * Always mask at least current interrupt to prevent re-entrance
- */
- for (i=BSP_ISA_IRQ_LOWEST_OFFSET; i < BSP_ISA_IRQ_NUMBER; i++) {
- * ((unsigned short*) &irq_mask_or_tbl[i]) = (1 << i);
- for (j = BSP_ISA_IRQ_LOWEST_OFFSET; j < BSP_ISA_IRQ_NUMBER; j++) {
- /*
- * Mask interrupts at i8259 level that have a lower priority
- */
- if (internal_config->irqPrioTbl [i] > internal_config->irqPrioTbl [j]) {
- * ((unsigned short*) &irq_mask_or_tbl[i]) |= (1 << j);
- }
- }
- }
-}
-
-/*
- * This function check that the value given for the irq line
- * is valid.
- */
-
-static int isValidInterrupt(int irq)
-{
- if ( (irq < BSP_LOWEST_OFFSET) || (irq > BSP_MAX_OFFSET))
- return 0;
- return 1;
-}
-
-/*
- * ------------------------ RTEMS Single Irq Handler Mngt Routines ----------------
- */
-
-int BSP_install_rtems_irq_handler (const rtems_irq_connect_data* irq)
-{
- unsigned int level;
-
- if (!isValidInterrupt(irq->name)) {
- return 0;
- }
- /*
- * Check if default handler is actually connected. If not issue an error.
- * You must first get the current handler via i386_get_current_idt_entry
- * and then disconnect it using i386_delete_idt_entry.
- * RATIONALE : to always have the same transition by forcing the user
- * to get the previous handler before accepting to disconnect.
- */
- if (rtems_hdl_tbl[irq->name].hdl != default_rtems_entry.hdl) {
- return 0;
- }
- _CPU_ISR_Disable(level);
-
- /*
- * store the data provided by user
- */
- rtems_hdl_tbl[irq->name] = *irq;
-
- if (is_isa_irq(irq->name)) {
- /*
- * Enable interrupt at PIC level
- */
- BSP_irq_enable_at_i8259s (irq->name);
- }
-
- if (is_pci_irq(irq->name)) {
- /*
- * Enable interrupt at OPENPIC level
- */
- openpic_enable_irq ((int) irq->name - BSP_PCI_IRQ_LOWEST_OFFSET);
- }
-
- if (is_processor_irq(irq->name)) {
- /*
- * Enable exception at processor level
- */
- }
- /*
- * Enable interrupt on device
- */
- irq->on(irq);
-
- _CPU_ISR_Enable(level);
-
- return 1;
-}
-
-
-int BSP_get_current_rtems_irq_handler (rtems_irq_connect_data* irq)
-{
- if (!isValidInterrupt(irq->name)) {
- return 0;
- }
- *irq = rtems_hdl_tbl[irq->name];
- return 1;
-}
-
-int BSP_remove_rtems_irq_handler (const rtems_irq_connect_data* irq)
-{
- unsigned int level;
-
- if (!isValidInterrupt(irq->name)) {
- return 0;
- }
- /*
- * Check if default handler is actually connected. If not issue an error.
- * You must first get the current handler via i386_get_current_idt_entry
- * and then disconnect it using i386_delete_idt_entry.
- * RATIONALE : to always have the same transition by forcing the user
- * to get the previous handler before accepting to disconnect.
- */
- if (rtems_hdl_tbl[irq->name].hdl != irq->hdl) {
- return 0;
- }
- _CPU_ISR_Disable(level);
-
- if (is_isa_irq(irq->name)) {
- /*
- * disable interrupt at PIC level
- */
- BSP_irq_disable_at_i8259s (irq->name);
- }
- if (is_pci_irq(irq->name)) {
- /*
- * disable interrupt at OPENPIC level
- */
- openpic_disable_irq ((int) irq->name - BSP_PCI_IRQ_LOWEST_OFFSET);
- }
- if (is_processor_irq(irq->name)) {
- /*
- * disable exception at processor level
- */
- }
-
- /*
- * Disable interrupt on device
- */
- irq->off(irq);
-
- /*
- * restore the default irq value
- */
- rtems_hdl_tbl[irq->name] = default_rtems_entry;
-
- _CPU_ISR_Enable(level);
-
- return 1;
-}
-
-/*
- * ------------------------ RTEMS Global Irq Handler Mngt Routines ----------------
- */
-
-int BSP_rtems_irq_mngt_set(rtems_irq_global_settings* config)
-{
- int i;
- unsigned int level;
- /*
- * Store various code accelerators
- */
- internal_config = config;
- default_rtems_entry = config->defaultEntry;
- rtems_hdl_tbl = config->irqHdlTbl;
-
- _CPU_ISR_Disable(level);
- /*
- * set up internal tables used by rtems interrupt prologue
- */
- /*
- * start with ISA IRQ
- */
- compute_i8259_masks_from_prio ();
-
- for (i=BSP_ISA_IRQ_LOWEST_OFFSET; i < BSP_ISA_IRQ_NUMBER; i++) {
- if (rtems_hdl_tbl[i].hdl != default_rtems_entry.hdl) {
- BSP_irq_enable_at_i8259s (i);
- rtems_hdl_tbl[i].on(&rtems_hdl_tbl[i]);
- }
- else {
- rtems_hdl_tbl[i].off(&rtems_hdl_tbl[i]);
- BSP_irq_disable_at_i8259s (i);
- }
- }
- /*
- * must enable slave pic anyway
- */
- BSP_irq_enable_at_i8259s (2);
- /*
- * continue with PCI IRQ
- */
- for (i=BSP_PCI_IRQ_LOWEST_OFFSET; i < BSP_PCI_IRQ_LOWEST_OFFSET + BSP_PCI_IRQ_NUMBER ; i++) {
- openpic_set_priority(0, internal_config->irqPrioTbl [i]);
- if (rtems_hdl_tbl[i].hdl != default_rtems_entry.hdl) {
- openpic_enable_irq ((int) i - BSP_PCI_IRQ_LOWEST_OFFSET);
- rtems_hdl_tbl[i].on(&rtems_hdl_tbl[i]);
- }
- else {
- rtems_hdl_tbl[i].off(&rtems_hdl_tbl[i]);
- openpic_disable_irq ((int) i - BSP_PCI_IRQ_LOWEST_OFFSET);
- }
- }
- /*
- * Must enable PCI/ISA bridge IRQ
- */
- openpic_enable_irq (0);
- /*
- * finish with Processor exceptions handled like IRQ
- */
- for (i=BSP_PROCESSOR_IRQ_LOWEST_OFFSET; i < BSP_PROCESSOR_IRQ_LOWEST_OFFSET + BSP_PROCESSOR_IRQ_NUMBER; i++) {
- if (rtems_hdl_tbl[i].hdl != default_rtems_entry.hdl) {
- rtems_hdl_tbl[i].on(&rtems_hdl_tbl[i]);
- }
- else {
- rtems_hdl_tbl[i].off(&rtems_hdl_tbl[i]);
- }
- }
- _CPU_ISR_Enable(level);
- return 1;
-}
-
-int BSP_rtems_irq_mngt_get(rtems_irq_global_settings** config)
-{
- *config = internal_config;
- return 0;
-}
-
-static unsigned spuriousIntr = 0;
-/*
- * High level IRQ handler called from shared_raw_irq_code_entry
- */
-void C_dispatch_irq_handler (CPU_Interrupt_frame *frame, unsigned int excNum)
-{
- register unsigned int irq;
- register unsigned isaIntr; /* boolean */
- register unsigned oldMask; /* old isa pic masks */
- register unsigned newMask; /* new isa pic masks */
- register unsigned msr;
- register unsigned new_msr;
-
-
- if (excNum == ASM_DEC_VECTOR) {
- _CPU_MSR_GET(msr);
- new_msr = msr | MSR_EE;
- _CPU_MSR_SET(new_msr);
-
- rtems_hdl_tbl[BSP_DECREMENTER].hdl();
-
- _CPU_MSR_SET(msr);
- return;
-
- }
- irq = openpic_irq(0);
- if (irq == OPENPIC_VEC_SPURIOUS) {
- ++spuriousIntr;
- return;
- }
- isaIntr = (irq == BSP_PCI_ISA_BRIDGE_IRQ);
- if (isaIntr) {
- /*
- * Acknowledge and read 8259 vector
- */
- irq = (unsigned int) (*(unsigned char *) RAVEN_INTR_ACK_REG);
- /*
- * store current PIC mask
- */
- oldMask = i8259s_cache;
- newMask = oldMask | irq_mask_or_tbl [irq];
- i8259s_cache = newMask;
- outport_byte(PIC_MASTER_IMR_IO_PORT, i8259s_cache & 0xff);
- outport_byte(PIC_SLAVE_IMR_IO_PORT, ((i8259s_cache & 0xff00) >> 8));
- BSP_irq_ack_at_i8259s (irq);
- openpic_eoi(0);
- }
- _CPU_MSR_GET(msr);
- new_msr = msr | MSR_EE;
- _CPU_MSR_SET(new_msr);
-
- rtems_hdl_tbl[irq].hdl();
-
- _CPU_MSR_SET(msr);
-
- if (isaIntr) {
- i8259s_cache = oldMask;
- outport_byte(PIC_MASTER_IMR_IO_PORT, i8259s_cache & 0xff);
- outport_byte(PIC_SLAVE_IMR_IO_PORT, ((i8259s_cache & 0xff00) >> 8));
- }
- else {
- openpic_eoi(0);
- }
-}
-
-
-
-void _ThreadProcessSignalsFromIrq (BSP_Exception_frame* ctx)
-{
- /*
- * Process pending signals that have not already been
- * processed by _Thread_Displatch. This happens quite
- * unfrequently : the ISR must have posted an action
- * to the current running thread.
- */
- if ( _Thread_Do_post_task_switch_extension ||
- _Thread_Executing->do_post_task_switch_extension ) {
- _Thread_Executing->do_post_task_switch_extension = FALSE;
- _API_extensions_Run_postswitch();
- }
- /*
- * I plan to process other thread related events here.
- * This will include DEBUG session requested from keyboard...
- */
-}
diff --git a/c/src/lib/libbsp/powerpc/motorola_powerpc/irq/irq.h b/c/src/lib/libbsp/powerpc/motorola_powerpc/irq/irq.h
deleted file mode 100644
index aaf438c8dd..0000000000
--- a/c/src/lib/libbsp/powerpc/motorola_powerpc/irq/irq.h
+++ /dev/null
@@ -1,319 +0,0 @@
-/* irq.h
- *
- * This include file describe the data structure and the functions implemented
- * by rtems to write interrupt handlers.
- *
- * CopyRight (C) 1999 valette@crf.canon.fr
- *
- * This code is heavilly inspired by the public specification of STREAM V2
- * that can be found at :
- *
- * <http://www.chorus.com/Documentation/index.html> by following
- * the STREAM API Specification Document link.
- *
- * The license and distribution terms for this file may be
- * found in found in the file LICENSE in this distribution or at
- * http://www.OARcorp.com/rtems/license.html.
- *
- * $Id$
- */
-
-#ifndef LIBBSP_POWERPC_MCP750_IRQ_IRQ_H
-#define LIBBSP_POWERPC_MCP750_IRQ_IRQ_H
-
-
-/*
- * 8259 edge/level control definitions at VIA
- */
-#define ISA8259_M_ELCR 0x4d0
-#define ISA8259_S_ELCR 0x4d1
-
-#define ELCRS_INT15_LVL 0x80
-#define ELCRS_INT14_LVL 0x40
-#define ELCRS_INT13_LVL 0x20
-#define ELCRS_INT12_LVL 0x10
-#define ELCRS_INT11_LVL 0x08
-#define ELCRS_INT10_LVL 0x04
-#define ELCRS_INT9_LVL 0x02
-#define ELCRS_INT8_LVL 0x01
-#define ELCRM_INT7_LVL 0x80
-#define ELCRM_INT6_LVL 0x40
-#define ELCRM_INT5_LVL 0x20
-#define ELCRM_INT4_LVL 0x10
-#define ELCRM_INT3_LVL 0x8
-#define ELCRM_INT2_LVL 0x4
-#define ELCRM_INT1_LVL 0x2
-#define ELCRM_INT0_LVL 0x1
-
-#define BSP_ASM_IRQ_VECTOR_BASE 0x0
- /* PIC's command and mask registers */
-#define PIC_MASTER_COMMAND_IO_PORT 0x20 /* Master PIC command register */
-#define PIC_SLAVE_COMMAND_IO_PORT 0xa0 /* Slave PIC command register */
-#define PIC_MASTER_IMR_IO_PORT 0x21 /* Master PIC Interrupt Mask Register */
-#define PIC_SLAVE_IMR_IO_PORT 0xa1 /* Slave PIC Interrupt Mask Register */
-
- /* Command for specific EOI (End Of Interrupt): Interrupt acknowledge */
-#define PIC_EOSI 0x60 /* End of Specific Interrupt (EOSI) */
-#define SLAVE_PIC_EOSI 0x62 /* End of Specific Interrupt (EOSI) for cascade */
-#define PIC_EOI 0x20 /* Generic End of Interrupt (EOI) */
-
-#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,
- /*
- * 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,
- /*
- * 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,
- /*
- * 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,
- /*
- * Summary
- */
- BSP_IRQ_NUMBER = BSP_PROCESSOR_IRQ_MAX_OFFSET + 1,
- BSP_LOWEST_OFFSET = BSP_ISA_IRQ_LOWEST_OFFSET,
- BSP_MAX_OFFSET = BSP_PROCESSOR_IRQ_MAX_OFFSET,
- /*
- * Some ISA IRQ symbolic name definition
- */
- BSP_ISA_PERIODIC_TIMER = 0,
-
- BSP_ISA_KEYBOARD = 1,
-
- BSP_ISA_UART_COM2_IRQ = 3,
-
- BSP_ISA_UART_COM1_IRQ = 4,
-
- BSP_ISA_RT_TIMER1 = 8,
-
- 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,
- /*
- * Some Processor execption handled as rtems IRQ symbolic name definition
- */
- BSP_DECREMENTER = BSP_PROCESSOR_IRQ_LOWEST_OFFSET
-
-}rtems_irq_symbolic_name;
-
-
-
-
-/*
- * 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) (void);
-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;
- /*
- * 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;
-}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*);
-/*
- * 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
diff --git a/c/src/lib/libbsp/powerpc/motorola_powerpc/irq/irq_asm.S b/c/src/lib/libbsp/powerpc/motorola_powerpc/irq/irq_asm.S
deleted file mode 100644
index 043108155f..0000000000
--- a/c/src/lib/libbsp/powerpc/motorola_powerpc/irq/irq_asm.S
+++ /dev/null
@@ -1,322 +0,0 @@
-/*
- * This file contains the assembly code for the PowerPC
- * IRQ veneers for RTEMS.
- *
- * The license and distribution terms for this file may be
- * found in found in the file LICENSE in this distribution or at
- * http://www.OARcorp.com/rtems/license.html.
- *
- * Modified to support the MCP750.
- * Modifications Copyright (C) 1999 Eric Valette. valette@crf.canon.fr
- *
- *
- * $Id$
- */
-
-#include <bsp/vectors.h>
-#include <libcpu/cpu.h>
-#include <libcpu/raw_exception.h>
-#include <rtems/score/targopts.h>
-#include "asm.h"
-
-
-#define SYNC \
- sync; \
- isync
-
- .text
- .p2align 5
-
- PUBLIC_VAR(decrementer_exception_vector_prolog_code)
-
-SYM (decrementer_exception_vector_prolog_code):
- /*
- * let room for exception frame
- */
- stwu r1, - (EXCEPTION_FRAME_END)(r1)
- stw r4, GPR4_OFFSET(r1)
- li r4, ASM_DEC_VECTOR
- ba shared_raw_irq_code_entry
-
- PUBLIC_VAR (decrementer_exception_vector_prolog_code_size)
-
- decrementer_exception_vector_prolog_code_size = . - decrementer_exception_vector_prolog_code
-
- PUBLIC_VAR(external_exception_vector_prolog_code)
-
-SYM (external_exception_vector_prolog_code):
- /*
- * let room for exception frame
- */
- stwu r1, - (EXCEPTION_FRAME_END)(r1)
- stw r4, GPR4_OFFSET(r1)
- li r4, ASM_EXT_VECTOR
- ba shared_raw_irq_code_entry
-
- PUBLIC_VAR (external_exception_vector_prolog_code_size)
-
- external_exception_vector_prolog_code_size = . - external_exception_vector_prolog_code
-
- PUBLIC_VAR(shared_raw_irq_code_entry)
- PUBLIC_VAR(C_dispatch_irq_handler)
-
- .p2align 5
-SYM (shared_raw_irq_code_entry):
- /*
- * Entry conditions :
- * Registers already saved : R1, R4
- * R1 : points to a location with enough room for the
- * interrupt frame
- * R4 : vector number
- */
- /*
- * Save SRR0/SRR1 As soon As possible as it is the minimal needed
- * to reenable exception processing
- */
- stw r0, GPR0_OFFSET(r1)
- stw r2, GPR2_OFFSET(r1)
- stw r3, GPR3_OFFSET(r1)
-
- mfsrr0 r0
- mfsrr1 r2
- mfmsr r3
-
- stw r0, SRR0_FRAME_OFFSET(r1)
- stw r2, SRR1_FRAME_OFFSET(r1)
- /*
- * Enable data and instruction address translation, exception recovery
- */
- ori r3, r3, MSR_RI | MSR_IR | MSR_DR
- mtmsr r3
- SYNC
- /*
- * Push C scratch registers on the current stack. It may
- * actually be the thread stack or the interrupt stack.
- * Anyway we have to make it in order to be able to call C/C++
- * functions. Depending on the nesting interrupt level, we will
- * switch to the right stack later.
- */
- stw r5, GPR5_OFFSET(r1)
- stw r6, GPR6_OFFSET(r1)
- stw r7, GPR7_OFFSET(r1)
- stw r8, GPR8_OFFSET(r1)
- stw r9, GPR9_OFFSET(r1)
- stw r10, GPR10_OFFSET(r1)
- stw r11, GPR11_OFFSET(r1)
- stw r12, GPR12_OFFSET(r1)
- stw r13, GPR13_OFFSET(r1)
-
- mfcr r5
- mfctr r6
- mfxer r7
- mflr r8
-
- stw r5, EXC_CR_OFFSET(r1)
- stw r6, EXC_CTR_OFFSET(r1)
- stw r7, EXC_XER_OFFSET(r1)
- stw r8, EXC_LR_OFFSET(r1)
-
- /*
- * Add some non volatile registers to store information
- * that will be used when returning from C handler
- */
- stw r14, GPR14_OFFSET(r1)
- stw r15, GPR15_OFFSET(r1)
- /*
- * save current stack pointer location in R14
- */
- addi r14, r1, 0
- /*
- * store part of _Thread_Dispatch_disable_level address in R15
- */
- addis r15,0, _Thread_Dispatch_disable_level@ha
- /*
- * Get current nesting level in R2
- */
- mfspr r2, SPRG0
- /*
- * Check if stack switch is necessary
- */
- cmpwi r2,0
- bne nested
- mfspr r1, SPRG1
-
-nested:
- /*
- * Start Incrementing nesting level in R2
- */
- addi r2,r2,1
- /*
- * Start Incrementing _Thread_Dispatch_disable_level R4 = _Thread_Dispatch_disable_level
- */
- lwz r6,_Thread_Dispatch_disable_level@l(r15)
- /*
- * store new nesting level in SPRG0
- */
- mtspr SPRG0, r2
-
- addi r6, r6, 1
- mfmsr r5
- /*
- * store new _Thread_Dispatch_disable_level value
- */
- stw r6, _Thread_Dispatch_disable_level@l(r15)
- /*
- * We are now running on the interrupt stack. External and decrementer
- * exceptions are still disabled. I see no purpose trying to optimize
- * further assembler code.
- */
- /*
- * Call C exception handler for decrementer Interrupt frame is passed just
- * in case...
- */
- addi r3, r14, 0x8
- bl C_dispatch_irq_handler /* C_dispatch_irq_handler(cpu_interrupt_frame* r3, vector r4) */
- /*
- * start decrementing nesting level. Note : do not test result against 0
- * value as an easy exit condition because if interrupt nesting level > 1
- * then _Thread_Dispatch_disable_level > 1
- */
- mfspr r2, SPRG0
- /*
- * start decrementing _Thread_Dispatch_disable_level
- */
- lwz r3,_Thread_Dispatch_disable_level@l(r15)
- addi r2, r2, -1 /* Continue decrementing nesting level */
- addi r3, r3, -1 /* Continue decrementing _Thread_Dispatch_disable_level */
- mtspr SPRG0, r2 /* End decrementing nesting level */
- stw r3,_Thread_Dispatch_disable_level@l(r15) /* End decrementing _Thread_Dispatch_disable_level */
- cmpwi r3, 0
- /*
- * switch back to original stack (done here just optimize registers
- * contention. Could have been done before...)
- */
- addi r1, r14, 0
- bne easy_exit /* if (_Thread_Dispatch_disable_level != 0) goto easy_exit */
- /*
- * Here we are running again on the thread system stack.
- * We have interrupt nesting level = _Thread_Dispatch_disable_level = 0.
- * Interrupt are still disabled. Time to check if scheduler request to
- * do something with the current thread...
- */
- addis r4, 0, _Context_Switch_necessary@ha
- lwz r5, _Context_Switch_necessary@l(r4)
- cmpwi r5, 0
- bne switch
-
- addis r6, 0, _ISR_Signals_to_thread_executing@ha
- lwz r7, _ISR_Signals_to_thread_executing@l(r6)
- cmpwi r7, 0
- li r8, 0
- beq easy_exit
- stw r8, _ISR_Signals_to_thread_executing@l(r6)
- /*
- * going to call _ThreadProcessSignalsFromIrq
- * Push a complete exception like frame...
- */
- stmw r16, GPR16_OFFSET(r1)
- addi r3, r1, 0x8
- /*
- * compute SP at exception entry
- */
- addi r2, r1, EXCEPTION_FRAME_END
- /*
- * store it at the right place
- */
- stw r2, GPR1_OFFSET(r1)
- /*
- * Call High Level signal handling code
- */
- bl _ISR_Signals_to_thread_executing
- /*
- * start restoring exception like frame
- */
- lwz r31, EXC_CTR_OFFSET(r1)
- lwz r30, EXC_XER_OFFSET(r1)
- lwz r29, EXC_CR_OFFSET(r1)
- lwz r28, EXC_LR_OFFSET(r1)
-
- mtctr r31
- mtxer r30
- mtcr r29
- mtlr r28
-
- lmw r4, GPR4_OFFSET(r1)
- lwz r2, GPR2_OFFSET(r1)
- lwz r0, GPR0_OFFSET(r1)
-
- /*
- * Disable data and instruction translation. Make path non recoverable...
- */
- mfmsr r3
- xori r3, r3, MSR_RI | MSR_IR | MSR_DR
- mtmsr r3
- SYNC
- /*
- * Restore rfi related settings
- */
-
- lwz r3, SRR1_FRAME_OFFSET(r1)
- mtsrr1 r3
- lwz r3, SRR0_FRAME_OFFSET(r1)
- mtsrr0 r3
-
- lwz r3, GPR3_OFFSET(r1)
- addi r1,r1, EXCEPTION_FRAME_END
- SYNC
- rfi
-
-switch:
- bl SYM (_Thread_Dispatch)
-
-easy_exit:
- /*
- * start restoring interrupt frame
- */
- lwz r3, EXC_CTR_OFFSET(r1)
- lwz r4, EXC_XER_OFFSET(r1)
- lwz r5, EXC_CR_OFFSET(r1)
- lwz r6, EXC_LR_OFFSET(r1)
-
- mtctr r3
- mtxer r4
- mtcr r5
- mtlr r6
-
- lwz r15, GPR15_OFFSET(r1)
- lwz r14, GPR14_OFFSET(r1)
- lwz r13, GPR13_OFFSET(r1)
- lwz r12, GPR12_OFFSET(r1)
- lwz r11, GPR11_OFFSET(r1)
- lwz r10, GPR10_OFFSET(r1)
- lwz r9, GPR9_OFFSET(r1)
- lwz r8, GPR8_OFFSET(r1)
- lwz r7, GPR7_OFFSET(r1)
- lwz r6, GPR6_OFFSET(r1)
- lwz r5, GPR5_OFFSET(r1)
-
- /*
- * Disable nested exception processing, data and instruction
- * translation.
- */
- mfmsr r3
- xori r3, r3, MSR_RI | MSR_IR | MSR_DR
- mtmsr r3
- SYNC
- /*
- * Restore rfi related settings
- */
-
- lwz r4, SRR1_FRAME_OFFSET(r1)
- lwz r2, SRR0_FRAME_OFFSET(r1)
- lwz r3, GPR3_OFFSET(r1)
- lwz r0, GPR0_OFFSET(r1)
-
- mtsrr1 r4
- mtsrr0 r2
- lwz r4, GPR4_OFFSET(r1)
- lwz r2, GPR2_OFFSET(r1)
- addi r1,r1, EXCEPTION_FRAME_END
- SYNC
- rfi
-
diff --git a/c/src/lib/libbsp/powerpc/motorola_powerpc/irq/irq_init.c b/c/src/lib/libbsp/powerpc/motorola_powerpc/irq/irq_init.c
deleted file mode 100644
index fcf1f8a09b..0000000000
--- a/c/src/lib/libbsp/powerpc/motorola_powerpc/irq/irq_init.c
+++ /dev/null
@@ -1,282 +0,0 @@
-/* irq_init.c
- *
- * This file contains the implementation of rtems initialization
- * related to interrupt handling.
- *
- * CopyRight (C) 1999 valette@crf.canon.fr
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.OARcorp.com/rtems/license.html.
- *
- * $Id$
- */
-#include <bsp/consoleIo.h>
-#include <libcpu/io.h>
-#include <libcpu/spr.h>
-#include <bsp/pci.h>
-#include <bsp/residual.h>
-#include <bsp/openpic.h>
-#include <bsp/irq.h>
-#include <bsp.h>
-#include <libcpu/raw_exception.h>
-
-typedef struct {
- unsigned char bus; /* few chance the PCI/ISA bridge is not on first bus but ... */
- unsigned char device;
- unsigned char function;
-} pci_isa_bridge_device;
-
-pci_isa_bridge_device* via_82c586 = 0;
-static pci_isa_bridge_device bridge;
-
-extern unsigned int external_exception_vector_prolog_code_size;
-extern void external_exception_vector_prolog_code();
-extern unsigned int decrementer_exception_vector_prolog_code_size;
-extern void decrementer_exception_vector_prolog_code();
-
-/*
- * default on/off function
- */
-static void nop_func(){}
-/*
- * default isOn function
- */
-static int not_connected() {return 0;}
-/*
- * default possible isOn function
- */
-static int connected() {return 1;}
-
-static rtems_irq_connect_data rtemsIrq[BSP_IRQ_NUMBER];
-static rtems_irq_global_settings initial_config;
-static rtems_irq_connect_data defaultIrq = {
- /* vectorIdex, hdl , on , off , isOn */
- 0, nop_func , nop_func , nop_func , not_connected
-};
-static rtems_irq_prio irqPrioTable[BSP_IRQ_NUMBER]={
- /*
- * actual rpiorities for interrupt :
- * 0 means that only current interrupt is masked
- * 255 means all other interrupts are masked
- */
- /*
- * ISA interrupts.
- * The second entry has a priority of 255 because
- * it is the slave pic entry and is should always remain
- * unmasked.
- */
- 0,0,
- 255,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- /*
- * PCI Interrupts
- */
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* for raven prio 0 means unactive... */
- /*
- * Processor exceptions handled as interrupts
- */
- 0
-};
-
-static unsigned char mcp750_openpic_initsenses[] = {
- 1, /* MCP750_INT_PCB(8259) */
- 0, /* MCP750_INT_FALCON_ECC_ERR */
- 1, /* MCP750_INT_PCI_ETHERNET */
- 1, /* MCP750_INT_PCI_PMC */
- 1, /* MCP750_INT_PCI_WATCHDOG_TIMER1 */
- 1, /* MCP750_INT_PCI_PRST_SIGNAL */
- 1, /* MCP750_INT_PCI_FALL_SIGNAL */
- 1, /* MCP750_INT_PCI_DEG_SIGNAL */
- 1, /* MCP750_INT_PCI_BUS1_INTA */
- 1, /* MCP750_INT_PCI_BUS1_INTB */
- 1, /* MCP750_INT_PCI_BUS1_INTC */
- 1, /* MCP750_INT_PCI_BUS1_INTD */
- 1, /* MCP750_INT_PCI_BUS2_INTA */
- 1, /* MCP750_INT_PCI_BUS2_INTB */
- 1, /* MCP750_INT_PCI_BUS2_INTC */
- 1, /* MCP750_INT_PCI_BUS2_INTD */
-};
-
-void isa_bridge_interrupts_setup(void)
-{
- pci_isa_bridge_device pci_dev;
- unsigned int temp;
- unsigned char tmp;
- unsigned char maxBus;
- unsigned found = 0;
-
- maxBus = BusCountPCI();
- pci_dev.function = 0; /* Assumes the bidge is the first function */
-
- for (pci_dev.bus = 0; pci_dev.bus < maxBus; pci_dev.bus++) {
-#ifdef SCAN_PCI_PRINT
- printk("isa_bridge_interrupts_setup: Scanning bus %d\n", pci_dev.bus);
-#endif
- for (pci_dev.device = 0; pci_dev.device < PCI_MAX_DEVICES; pci_dev.device++) {
-#ifdef SCAN_PCI_PRINT
- printk("isa_bridge_interrupts_setup: Scanning device %d\n", pci_dev.device);
-#endif
- pci_read_config_dword(pci_dev.bus, pci_dev.device, pci_dev.function,
- PCI_VENDOR_ID, &temp);
-#ifdef SCAN_PCI_PRINT
- printk("Vendor/device = %x\n", temp);
-#endif
- if ( (temp == (((unsigned short) PCI_VENDOR_ID_VIA) | (PCI_DEVICE_ID_VIA_82C586_1 << 16)))
- ||
- (temp == (((unsigned short) PCI_VENDOR_ID_VIA) | (PCI_DEVICE_ID_VIA_82C586_0 << 16)))
- ) {
- bridge = pci_dev;
- via_82c586 = &bridge;
- /*
- * Should print : bus = 0, device = 11, function = 0 on a MCP750.
- */
- printk("Via PCI/ISA bridge found at bus = %d, device = %d, function = %d\n",
- via_82c586->bus,
- via_82c586->device,
- via_82c586->function);
- found = 1;
- goto loop_exit;
-
- }
- }
- }
-loop_exit:
- if (!found) BSP_panic("VIA_82C586 PCI/ISA bridge not found!n");
-
- tmp = inb(0x810);
- if ( !(tmp & 0x2)) {
- printk("This is a second generation MCP750 board\n");
- printk("We must reprogram the PCI/ISA bridge...\n");
- pci_read_config_byte(via_82c586->bus, via_82c586->device, via_82c586->function,
- 0x47, &tmp);
- printk(" PCI ISA bridge control2 = %x\n", (unsigned) tmp);
- /*
- * Enable 4D0/4D1 ISA interrupt level/edge config registers
- */
- tmp |= 0x20;
- pci_write_config_byte(via_82c586->bus, via_82c586->device, via_82c586->function,
- 0x47, tmp);
- /*
- * Now program the ISA interrupt edge/level
- */
- tmp = ELCRS_INT9_LVL | ELCRS_INT10_LVL | ELCRS_INT11_LVL;
- outb(tmp, ISA8259_S_ELCR);
- tmp = ELCRM_INT5_LVL;
- outb(tmp, ISA8259_M_ELCR);;
- /*
- * Set the Interrupt inputs to non-inverting level interrupt
- */
- pci_read_config_byte(via_82c586->bus, via_82c586->device, via_82c586->function,
- 0x54, &tmp);
- printk(" PCI ISA bridge PCI/IRQ Edge/Level Select = %x\n", (unsigned) tmp);
- tmp = 0;
- pci_write_config_byte(via_82c586->bus, via_82c586->device, via_82c586->function,
- 0x54, tmp);
- }
- else {
- printk("This is a first generation MCP750 board\n");
- printk("We just show the actual value used by PCI/ISA bridge\n");
- pci_read_config_byte(via_82c586->bus, via_82c586->device, via_82c586->function,
- 0x47, &tmp);
- printk(" PCI ISA bridge control2 = %x\n", (unsigned) tmp);
- /*
- * Enable 4D0/4D1 ISA interrupt level/edge config registers
- */
- tmp |= 0x20;
- pci_write_config_byte(via_82c586->bus, via_82c586->device, via_82c586->function,
- 0x47, tmp);
- tmp = inb(ISA8259_S_ELCR);
- printk(" PCI ISA bridge slave edge/level control bit = %x\n", (unsigned) tmp);
- tmp = inb(ISA8259_M_ELCR);;
- printk(" PCI ISA bridge master edge/level control bit = %x\n", (unsigned) tmp);
- /*
- * Must disable the 4D0/4D1 ISA interrupt level/edge config registers
- * or the card will die a soon as we we will enable external interrupts
- */
- pci_read_config_byte(via_82c586->bus, via_82c586->device, via_82c586->function,
- 0x47, &tmp);
- tmp &= ~(0x20);
- pci_write_config_byte(via_82c586->bus, via_82c586->device, via_82c586->function,
- 0x47, tmp);
- /*
- * Show the Interrupt inputs inverting/non-inverting level status
- */
- pci_read_config_byte(via_82c586->bus, via_82c586->device, via_82c586->function,
- 0x54, &tmp);
- printk(" PCI ISA bridge PCI/IRQ Edge/Level Select = %x\n", (unsigned) tmp);
- }
-}
-
- /*
- * This code assumes the exceptions management setup has already
- * been done. We just need to replace the exceptions that will
- * be handled like interrupt. On mcp750/mpc750 this means the
- * decrementer exception and the external exception.
- */
-void BSP_rtems_irq_mng_init(unsigned cpuId)
-{
- rtems_raw_except_connect_data vectorDesc;
- int i;
-
- /*
- * First initialize the Interrupt management hardware
- */
- OpenPIC_InitSenses = mcp750_openpic_initsenses;
- OpenPIC_NumInitSenses = sizeof(mcp750_openpic_initsenses) / sizeof(char);
- printk("Going to initialize raven interrupt controller (openpic compliant)\n");
- openpic_init(1);
- printk("Going to initialize the PCI/ISA bridge IRQ related setting (VIA 82C586)\n");
- isa_bridge_interrupts_setup();
- printk("Going to initialize the ISA PC legacy IRQ management hardware\n");
- BSP_i8259s_init();
- /*
- * Initialize Rtems management interrupt table
- */
- /*
- * re-init the rtemsIrq table
- */
- for (i = 0; i < BSP_IRQ_NUMBER; i++) {
- rtemsIrq[i] = defaultIrq;
- rtemsIrq[i].name = i;
- }
- /*
- * Init initial Interrupt management config
- */
- initial_config.irqNb = BSP_IRQ_NUMBER;
- initial_config.defaultEntry = defaultIrq;
- initial_config.irqHdlTbl = rtemsIrq;
- initial_config.irqBase = BSP_ASM_IRQ_VECTOR_BASE;
- initial_config.irqPrioTbl = irqPrioTable;
-
- if (!BSP_rtems_irq_mngt_set(&initial_config)) {
- /*
- * put something here that will show the failure...
- */
- BSP_panic("Unable to initialize RTEMS interrupt Management!!! System locked\n");
- }
-
- /*
- * We must connect the raw irq handler for the two
- * expected interrupt sources : decrementer and external interrupts.
- */
- vectorDesc.exceptIndex = ASM_DEC_VECTOR;
- vectorDesc.hdl.vector = ASM_DEC_VECTOR;
- vectorDesc.hdl.raw_hdl = decrementer_exception_vector_prolog_code;
- vectorDesc.hdl.raw_hdl_size = (unsigned) &decrementer_exception_vector_prolog_code_size;
- vectorDesc.on = nop_func;
- vectorDesc.off = nop_func;
- vectorDesc.isOn = connected;
- if (!mpc60x_set_exception (&vectorDesc)) {
- BSP_panic("Unable to initialize RTEMS decrementer raw exception\n");
- }
- vectorDesc.exceptIndex = ASM_EXT_VECTOR;
- vectorDesc.hdl.vector = ASM_EXT_VECTOR;
- vectorDesc.hdl.raw_hdl = external_exception_vector_prolog_code;
- vectorDesc.hdl.raw_hdl_size = (unsigned) &external_exception_vector_prolog_code_size;
- if (!mpc60x_set_exception (&vectorDesc)) {
- BSP_panic("Unable to initialize RTEMS external raw exception\n");
- }
- printk("RTEMS IRQ management is now operationnal\n");
-}
-