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Diffstat (limited to 'c/src/lib/libbsp/powerpc/mcp750/irq/irq_init.c')
-rw-r--r--c/src/lib/libbsp/powerpc/mcp750/irq/irq_init.c282
1 files changed, 0 insertions, 282 deletions
diff --git a/c/src/lib/libbsp/powerpc/mcp750/irq/irq_init.c b/c/src/lib/libbsp/powerpc/mcp750/irq/irq_init.c
deleted file mode 100644
index fcf1f8a09b..0000000000
--- a/c/src/lib/libbsp/powerpc/mcp750/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");
-}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 14:45:06 +0000