/* rsPMCQ1.c - Radstone PMCQ1 Common Initialisation Code
*
* Copyright 2000 Radstone Technology
*
* THIS FILE IS PROVIDED TO YOU, THE USER, "AS IS", WITHOUT WARRANTY OF ANY
* KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK
* AS TO THE QUALITY AND PERFORMANCE OF ALL CODE IN THIS FILE IS WITH YOU.
*
* You are hereby granted permission to use, copy, modify, and distribute
* this file, provided that this notice, plus the above copyright notice
* and disclaimer, appears in all copies. Radstone Technology will provide
* no support for this code.
*
* COPYRIGHT (c) 2005.
* On-Line Applications Research Corporation (OAR).
*
* 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.
*
*/
/*
DESCRIPTION
These functions are responsible for scanning for PMCQ1's and setting up
the Motorola MC68360's if present.
USAGE
call rsPMCQ1Init() to perform ba sic initialisation of the PMCQ1's.
*/
/* includes */
#include <libcpu/io.h>
#include <bsp/irq.h>
#include <stdlib.h>
#include <rtems/bspIo.h>
#include <bsp/pci.h>
#include <bsp.h>
#include "rsPMCQ1.h"
#include "m68360.h"
/* defines */
#if 1
#define DEBUG_360
#endif
/* Local data */
PPMCQ1BoardData pmcq1BoardData = NULL;
static unsigned char rsPMCQ1Initialized = FALSE;
/* forward declarations */
static void MsDelay(void)
{
printk(".");
}
static void write8( int addr, int data ){
out_8((void *)addr, (unsigned char)data);
}
static void write16( int addr, int data ) {
out_be16((void *)addr, (short)data );
}
static void write32( int addr, int data ) {
out_be32((unsigned int *)addr, data );
}
static void rsPMCQ1_scc_nullFunc(void) {}
/*******************************************************************************
* rsPMCQ1Int - handle a PMCQ1 interrupt
*
* This routine gets called when the QUICC or MA causes
* an interrupt.
*
* RETURNS: NONE.
*/
static void rsPMCQ1Int( void *ptr )
{
unsigned long status;
unsigned long status1;
unsigned long mask;
uint32_t data;
PPMCQ1BoardData boardData = ptr;
status = PMCQ1_Read_EPLD(boardData->baseaddr, PMCQ1_INT_STATUS );
mask = PMCQ1_Read_EPLD(boardData->baseaddr, PMCQ1_INT_MASK );
if (((mask & PMCQ1_INT_MASK_QUICC) == 0) && (status & PMCQ1_INT_STATUS_QUICC))
{
/* If there is a handler call it otherwise mask the interrupt */
if (boardData->quiccInt) {
boardData->quiccInt(boardData->quiccArg);
} else {
*(volatile unsigned long *)(boardData->baseaddr + PMCQ1_INT_MASK) |= PMCQ1_INT_MASK_QUICC;
}
}
if (((mask & PMCQ1_INT_MASK_MA) == 0) && (status & PMCQ1_INT_STATUS_MA))
{
/* If there is a handler call it otherwise mask the interrupt */
if (boardData->maInt) {
boardData->maInt(boardData->maArg);
data = PMCQ1_Read_EPLD(boardData->baseaddr, PMCQ1_INT_STATUS );
data &= (~PMCQ1_INT_STATUS_MA);
PMCQ1_Write_EPLD(boardData->baseaddr, PMCQ1_INT_STATUS, data );
} else {
*(volatile unsigned long *)(boardData->baseaddr + PMCQ1_INT_MASK) |= PMCQ1_INT_MASK_MA;
}
}
RTEMS_COMPILER_MEMORY_BARRIER();
/* Clear Interrupt on QSPAN */
*(volatile unsigned long *)(boardData->bridgeaddr + 0x600) = 0x00001000;
/* read back the status register to ensure that the pci write has completed */
status1 = *(volatile unsigned long *)(boardData->bridgeaddr + 0x600);
(void) status1; /* avoid set but not used warning */
RTEMS_COMPILER_MEMORY_BARRIER();
}
/*******************************************************************************
*
* rsPMCQ1MaIntConnect - connect a MiniAce interrupt routine
*
* This routine is called to connect a MiniAce interrupt handler
* upto a PMCQ1.
*
* RETURNS: OK if PMCQ1 found, ERROR if not.
*/
unsigned int rsPMCQ1MaIntConnect (
unsigned long busNo, /* Pci Bus number of PMCQ1 */
unsigned long slotNo, /* Pci Slot number of PMCQ1 */
unsigned long funcNo, /* Pci Function number of PMCQ1 */
FUNCTION_PTR routine,/* interrupt routine */
uintptr_t arg /* argument to pass to interrupt routine */
)
{
PPMCQ1BoardData boardData;
uint32_t data;
unsigned int status = RTEMS_IO_ERROR;
for (boardData = pmcq1BoardData; boardData; boardData = boardData->pNext)
{
if ((boardData->busNo == busNo) && (boardData->slotNo == slotNo) &&
(boardData->funcNo == funcNo))
{
boardData->maInt = routine;
boardData->maArg = arg;
data = PMCQ1_Read_EPLD(boardData->baseaddr, PMCQ1_INT_MASK );
data &= (~PMCQ1_INT_MASK_MA);
PMCQ1_Write_EPLD(boardData->baseaddr, PMCQ1_INT_MASK, data );
data = PMCQ1_Read_EPLD(boardData->baseaddr, PMCQ1_INT_STATUS );
data &= (~PMCQ1_INT_STATUS_MA);
PMCQ1_Write_EPLD(boardData->baseaddr, PMCQ1_INT_STATUS, data );
status = RTEMS_SUCCESSFUL;
break;
}
}
return (status);
}
/*******************************************************************************
*
* rsPMCQ1QuiccIntConnect - connect a Quicc interrupt routine
*
* This routine is called to connect a Quicc interrupt handler
* upto a PMCQ1.
*
* RETURNS: OK if PMCQ1 found, ERROR if not.
*/
unsigned int rsPMCQ1QuiccIntConnect(
unsigned long busNo, /* Pci Bus number of PMCQ1 */
unsigned long slotNo, /* Pci Slot number of PMCQ1 */
unsigned long funcNo, /* Pci Function number of PMCQ1 */
FUNCTION_PTR routine,/* interrupt routine */
uintptr_t arg /* argument to pass to interrupt routine */
)
{
PPMCQ1BoardData boardData;
unsigned int status = RTEMS_IO_ERROR;
for (boardData = pmcq1BoardData; boardData; boardData = boardData->pNext)
{
if ((boardData->busNo == busNo) && (boardData->slotNo == slotNo) &&
(boardData->funcNo == funcNo))
{
boardData->quiccInt = routine;
boardData->quiccArg = arg;
status = RTEMS_SUCCESSFUL;
break;
}
}
return (status);
}
/*******************************************************************************
*
* rsPMCQ1Init - initialize the PMCQ1's
*
* This routine is called to initialize the PCI card to a quiescent state.
*
* RETURNS: OK if PMCQ1 found, ERROR if not.
*/
unsigned int rsPMCQ1Init(void)
{
int busNo;
int slotNo;
uint32_t baseaddr = 0;
uint32_t bridgeaddr = 0;
unsigned long pbti0_ctl;
int i;
unsigned char int_vector;
int fun;
uint32_t temp;
PPMCQ1BoardData boardData;
rtems_irq_connect_data IrqData = {
.name = 0,
.hdl = rsPMCQ1Int,
.handle = NULL,
.on = (rtems_irq_enable) rsPMCQ1_scc_nullFunc,
.off = (rtems_irq_disable) rsPMCQ1_scc_nullFunc,
.isOn = (rtems_irq_is_enabled) rsPMCQ1_scc_nullFunc,
};
if (rsPMCQ1Initialized)
{
return RTEMS_SUCCESSFUL;
}
for (i=0;;i++){
if ( pci_find_device(PCI_VEN_ID_RADSTONE, PCI_DEV_ID_PMCQ1, i, &busNo, &slotNo, &fun) != 0 )
break;
pci_read_config_dword(busNo, slotNo, 0, PCI_BASE_ADDRESS_2, &baseaddr);
pci_read_config_dword(busNo, slotNo, 0, PCI_BASE_ADDRESS_0, &bridgeaddr);
#ifdef DEBUG_360
printk("PMCQ1 baseaddr 0x%08x bridgeaddr 0x%08x\n", baseaddr, bridgeaddr );
#endif
/* Set function code to normal mode and enable window */
pbti0_ctl = *(unsigned long *)(bridgeaddr + 0x100) & 0xff0fffff;
eieio();
*(unsigned long *)(bridgeaddr + 0x100) = pbti0_ctl | 0x00500080;
eieio();
/* Assert QBUS reset */
*(unsigned long *)(bridgeaddr + 0x800) |= 0x00000080;
eieio();
/*
* Hold QBus in reset for 1ms
*/
MsDelay();
/* Take QBUS out of reset */
*(unsigned long *)(bridgeaddr + 0x800) &= ~0x00000080;
eieio();
MsDelay();
/* If a QUICC is fitted initialise it */
if (PMCQ1_Read_EPLD(baseaddr, PMCQ1_BUILD_OPTION) & PMCQ1_QUICC_FITTED)
{
#ifdef DEBUG_360
printk(" Found QUICC busNo %d slotNo %d\n", busNo, slotNo);
#endif
/* Initialise MBAR (must use function code of 7) */
*(unsigned long *)(bridgeaddr + 0x100) = pbti0_ctl | 0x00700080;
eieio();
/* place internal 8K SRAM and registers at address 0x0 */
*(unsigned long *)(baseaddr + Q1_360_MBAR) = 0x1;
eieio();
/* Set function code to normal mode */
*(unsigned long *)(bridgeaddr + 0x100) = pbti0_ctl | 0x00500080;
eieio();
/* Disable the SWT and perform basic initialisation */
write8(baseaddr+Q1_360_SIM_SYPCR,0);
eieio();
write32(baseaddr+Q1_360_SIM_MCR,0xa0001029);
write16(baseaddr+Q1_360_SIM_PICR,0);
write16(baseaddr+Q1_360_SIM_PITR,0);
write16(baseaddr+Q1_360_CPM_ICCR,0x770);
write16(baseaddr+Q1_360_CPM_SDCR,0x770);
write32(baseaddr+Q1_360_CPM_CICR,0x00e49f00);
write16(baseaddr+Q1_360_SIM_PEPAR,0x2080);
eieio();
/* Enable SRAM */
write32(baseaddr+Q1_360_SIM_GMR,0x00001000); /* external master wait state */
eieio();
write32(baseaddr+Q1_360_SIM_OR0,0x1ff00000); /*| MEMC_OR_FC*/
eieio();
write32(baseaddr+Q1_360_SIM_BR0,0);
eieio();
write32(baseaddr+Q1_360_SIM_OR1,(0x5ff00000 | 0x00000780)); /*| MEMC_OR_FC*/
eieio();
write32(baseaddr+Q1_360_SIM_BR1,(0x00000040 | 0x00000001 | 0x00200280) );
eieio();
}
/*
* If a second PCI window is present then make it opposite
* endian to simplify 1553 integration.
*/
pci_read_config_dword(busNo, slotNo, 0, PCI_BASE_ADDRESS_3, &temp);
if (temp) {
*(unsigned long *)(bridgeaddr + 0x110) |= 0x00500880;
}
/*
* Create descriptor structure for this card
*/
if ((boardData = malloc(sizeof(struct _PMCQ1BoardData))) == NULL)
{
printk("Error Unable to allocate memory for _PMCQ1BoardData\n");
return(RTEMS_IO_ERROR);
}
boardData->pNext = pmcq1BoardData;
boardData->busNo = busNo;
boardData->slotNo = slotNo;
boardData->funcNo = 0;
boardData->baseaddr = baseaddr;
boardData->bridgeaddr = bridgeaddr;
boardData->quiccInt = NULL;
boardData->maInt = NULL;
pmcq1BoardData = boardData;
mc68360_scc_create_chip( boardData, int_vector );
/*
* Connect PMCQ1 interrupt handler.
*/
pci_read_config_byte(busNo, slotNo, 0, 0x3c, &int_vector);
#ifdef DEBUG_360
printk("PMCQ1 int_vector %d\n", int_vector);
#endif
IrqData.name = ((unsigned int)BSP_PCI_IRQ0 + int_vector);
IrqData.handle = boardData;
if (!BSP_install_rtems_shared_irq_handler (&IrqData)) {
printk("Error installing interrupt handler!\n");
rtems_fatal_error_occurred(1);
}
/*
* Enable PMCQ1 Interrupts from QSPAN-II
*/
*(unsigned long *)(bridgeaddr + 0x600) = 0x00001000;
eieio();
*(unsigned long *)(bridgeaddr + 0x604) |= 0x00001000;
eieio();
}
if (i > 0)
{
rsPMCQ1Initialized = TRUE;
}
return((i > 0) ? RTEMS_SUCCESSFUL : RTEMS_IO_ERROR);
}
uint32_t PMCQ1_Read_EPLD( uint32_t base, uint32_t reg )
{
uint32_t data;
data = ( *((unsigned long *) (base + reg)) );
#ifdef DEBUG_360
printk("EPLD Read 0x%x: 0x%08x\n", reg + base, data );
#endif
return data;
}
void PMCQ1_Write_EPLD( uint32_t base, uint32_t reg, uint32_t data )
{
*((unsigned long *) (base + reg)) = data;
#ifdef DEBUG_360
printk("EPLD Write 0x%x: 0x%08x\n", reg+base, data );
#endif
}
