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2003-02-20 Till Straumann <strauman@slac.stanford.edu>

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PR 349/bsps
	* vme/.cvsignore, vme/Makefile.am, vme/VME.h, vme/VMEConfig.h,
	vme/vmeconfig.c: Add glue to the powerpc/shared BSP to use
	the vmeUniverse VME-PCI bridge driver.
This commit is contained in:
Joel Sherrill
2003-02-20 21:42:15 +00:00
parent 01fdbb1f30
commit 422d561d4a
6 changed files with 258 additions and 0 deletions
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7
c/src/lib/libbsp/powerpc/shared/ChangeLog
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2003-02-20 Till Straumann <strauman@slac.stanford.edu>
PR 349/bsps
* vme/.cvsignore, vme/Makefile.am, vme/VME.h, vme/VMEConfig.h,
vme/vmeconfig.c: Add glue to the powerpc/shared BSP to use
the vmeUniverse VME-PCI bridge driver.
2003-02-20 Till Straumann <strauman@slac.stanford.edu>
PR 349/bsps

2
c/src/lib/libbsp/powerpc/shared/vme/.cvsignore Normal file
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Makefile
Makefile.in

13
c/src/lib/libbsp/powerpc/shared/vme/Makefile.am Normal file
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##
## $Id$
##
AUTOMAKE_OPTIONS = foreign 1.4
H_FILES = VMEConfig.h VME.h
C_FILES = vmeconfig.c
EXTRA_DIST = vmeconfig.c
include $(top_srcdir)/../../../../../automake/local.am

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c/src/lib/libbsp/powerpc/shared/vme/VME.h Normal file
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#ifndef RTEMS_BSP_VME_UNIVERSE_H
#define RTEMS_BSP_VME_UNIVERSE_H
/* $Id$ */
/* SVGM et al. BSP's VME support */
/* Author: Till Straumann, <strauman@slac.stanford.edu> */
/* pull in bsp.h */
#include <bsp.h>
/* our VME bridge */
#include <bsp/vmeUniverse.h>
/* our address space configuration */
#include <bsp/VMEConfig.h>
/* VME related declarations */
/* how to map a VME address to the CPU local bus.
* Note that this traverses two bridges:
* the grackle and the universe. For the
* Universe, there is a lookup procedure while
* we assume a 1:1 mapping for the grackle...
*/
/* NOTE about the fast mapping macros:
* using these macros is only safe if the user app
* does _NOT_ change the universe mappings!
* While changing the PCI windows probably doesn't
* make much sense (involves changing the MMU/DBATs as well),
* The user might wish to change the VME address
* layout, i.e. by remapping _VME_A32_WIN0_ON_VME
* and _VME_DRAM_OFFSET...
* Hence, using the A24 and A16 macros is probably safe.
*/
#define BSP_vme_init() \
vmeUniverseInit
/* translate through host bridge and vme master window of vme bridge */
static inline int
BSP_vme2local_adrs(unsigned am, unsigned long vmeaddr, unsigned long *plocaladdr)
{
int rval=vmeUniverseXlateAddr(1,0,am,vmeaddr,plocaladdr);
*plocaladdr+=PCI_MEM_BASE;
return rval;
}
/* when using this macro, the universe setup MUST NOT BE
* CHANGED by the application...
*/
#define BSP_vme2local_A32_fast(vmeaddr) \
((vmeaddr)-_VME_A32_WIN0_ON_VME + _VME_A32_WIN0_ON_PCI + PCI_MEM_BASE)
#define BSP_vme2local_A24_fast(vmeaddr) \
(((vmeaddr)&0x7ffffff)+_VME_A24_ON_PCI + PCI_MEM_BASE)
#define BSP_vme2local_A16_fast(vmeaddr) \
(((vmeaddr)&0xffff)+_VME_A16_ON_PCI + PCI_MEM_BASE)
/* how a CPU address is mapped to the VME bus (if at all)
*/
static inline int
BSP_local2vme_adrs(unsigned am, unsigned long localaddr, unsigned long *pvmeaddr)
{
return vmeUniverseXlateAddr(0, 0, am,localaddr+PCI_DRAM_OFFSET,pvmeaddr);
}
#define BSP_localdram2vme_fast(localaddr) \
((localaddr)+_VME_DRAM_OFFSET)
/* interrupt handlers and levels */
typedef void (*BSP_VME_ISR_t)(void *usrArg, unsigned long vector);
#define BSP_installVME_isr(vector, handler, arg) \
vmeUniverseInstallISR(vector, handler, arg)
#define BSP_removeVME_isr(vector, handler, arg) \
vmeUniverseRemoveISR(vector, handler, arg)
/* retrieve the currently installed ISR for a given vector */
#define BSP_getVME_isr(vector, parg) \
vmeUniverseISRGet(vector, parg)
#define BSP_enableVME_int_lvl(level) \
vmeUniverseIntEnable(level)
#define BSP_disableVME_int_lvl(level) \
vmeUniverseIntDisable(level)
/* Tell the interrupt manager that the universe driver
* already called openpic_eoi() and that this step hence
* must be omitted.
*/
#define BSP_PCI_VME_DRIVER_DOES_EOI
extern int _BSP_vme_bridge_irq;
/* don't reference vmeUniverse0PciIrqLine directly here - leave it up to
* bspstart() to set BSP_vme_bridge_irq. That way, we can generate variants
* of the BSP with / without the universe driver...
*/
#define BSP_PCI_VME_BRIDGE_IRQ _BSP_vme_bridge_irq
#endif

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c/src/lib/libbsp/powerpc/shared/vme/VMEConfig.h Normal file
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#ifndef RTEMS_BSP_VME_CONFIG_H
#define RTEMS_BSP_VME_CONFIG_H
/* $Id$ */
/* BSP specific address space configuration parameters */
/*
* The BSP maps VME address ranges into
* one BAT.
* NOTE: the BSP (startup/bspstart.c) uses
* hardcoded window lengths that match this
* layout:
*/
#define _VME_A32_WIN0_ON_PCI 0x10000000
#define _VME_A24_ON_PCI 0x1f000000
#define _VME_A16_ON_PCI 0x1fff0000
/* start of the A32 window on the VME bus
* TODO: this should perhaps be a configuration option
*/
#define _VME_A32_WIN0_ON_VME 0x20000000
/* if _VME_DRAM_OFFSET is defined, the BSP
* will map our RAM onto the VME bus, starting
* at _VME_DRAM_OFFSET
*/
#define _VME_DRAM_OFFSET 0xc0000000
#endif

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c/src/lib/libbsp/powerpc/shared/vme/vmeconfig.c Normal file
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/* $Id$ */
/* 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;
}