/* $Id$ */
/* Standard VME bridge configuration for VGM type boards */
/* Author: Till Straumann <strauman@slac.stanford.edu>, 3/2002 */
#include <bsp.h>
#include <bsp/VME.h>
#include <bsp/irq.h>
#include <libcpu/bat.h>
#include <libcpu/spr.h>
#include <bsp/motorola.h>
/* Use a weak alias for the VME configuration.
* This permits individual applications to override
* this routine.
* They may even create an 'empty'
*
* void BSP_vme_config(void) {}
*
* which will avoid linking in the Universe driver
* at all :-).
*/
void BSP_vme_config(void) __attribute__ (( weak, alias("__BSP_default_vme_config") ));
int _BSP_vme_bridge_irq = -1;
SPR_RO(DBAT0U)
void
__BSP_default_vme_config(void)
{
union {
struct _BATU bat;
unsigned long batbits;
} dbat0u;
if (currentBoard < MVME_2300 || currentBoard >= MVME_1600) {
printk("VME bridge for this board is unknown - if it's a Tundra Universe, add the board to 'shared/vme/vmeconfig.c'\n");
printk("Skipping VME initialization...\n");
return;
}
vmeUniverseInit();
vmeUniverseReset();
/* setup a PCI area to map the VME bus */
dbat0u.batbits = _read_DBAT0U();
/* if we have page tables, BAT0 is available */
if (dbat0u.bat.vs || dbat0u.bat.vp) {
printk("WARNING: BAT0 is taken (no pagetables?); VME bridge must share PCI range for VME access\n");
printk("Skipping VME initialization...\n");
return;
}
setdbat(0,
PCI_MEM_BASE + _VME_A32_WIN0_ON_PCI,
PCI_MEM_BASE + _VME_A32_WIN0_ON_PCI,
0x10000000,
IO_PAGE);
/* map VME address ranges */
vmeUniverseMasterPortCfg(
0,
VME_AM_EXT_SUP_DATA,
_VME_A32_WIN0_ON_VME,
_VME_A32_WIN0_ON_PCI,
0x0F000000);
vmeUniverseMasterPortCfg(
1,
VME_AM_STD_SUP_DATA,
0x00000000,
_VME_A24_ON_PCI,
0x00ff0000);
vmeUniverseMasterPortCfg(
2,
VME_AM_SUP_SHORT_IO,
0x00000000,
_VME_A16_ON_PCI,
0x00010000);
#ifdef _VME_DRAM_OFFSET
/* map our memory to VME */
vmeUniverseSlavePortCfg(
0,
VME_AM_EXT_SUP_DATA,
_VME_DRAM_OFFSET,
PCI_DRAM_OFFSET,
BSP_mem_size);
/* make sure the host bridge PCI master is enabled */
vmeUniverseWriteReg(
vmeUniverseReadReg(UNIV_REGOFF_PCI_CSR) | UNIV_PCI_CSR_BM,
UNIV_REGOFF_PCI_CSR);
#endif
/* stdio is not yet initialized; the driver will revert to printk */
vmeUniverseMasterPortsShow(0);
vmeUniverseSlavePortsShow(0);
/* install the VME insterrupt manager */
vmeUniverseInstallIrqMgr(0,5,1,6);
if (vmeUniverse0PciIrqLine<0)
BSP_panic("Unable to get interrupt line info from PCI config");
_BSP_vme_bridge_irq=BSP_PCI_IRQ_LOWEST_OFFSET+vmeUniverse0PciIrqLine;
}
