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2008-03-17 Till Straumann <strauman@slac.stanford.edu>

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* vmeUniverse/vmeTsi148.c: Initialize VME Master
	'VTON' timer and bus-release policy to less aggressive
	values than the chip's defaults. The default VTON easily
	overrides any settings used by the DMA engine.
This commit is contained in:
Till Straumann
2008-03-19 00:19:44 +00:00
parent 5589eac07b
commit bf1b08c14e
2 changed files with 53 additions and 3 deletions
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7
c/src/lib/libbsp/shared/ChangeLog
View File

@@ -1,3 +1,10 @@
2008-03-17 Till Straumann <strauman@slac.stanford.edu>
* vmeUniverse/vmeTsi148.c: Initialize VME Master
'VTON' timer and bus-release policy to less aggressive
values than the chip's defaults. The default VTON easily
overrides any settings used by the DMA engine.
2008-03-03 Joel Sherrill <joel.sherrill@OARcorp.com>
* gdbstub/rtems-stub-glue.c: Update to use the new

49
c/src/lib/libbsp/shared/vmeUniverse/vmeTsi148.c
View File

@@ -58,9 +58,7 @@
#include <bsp.h>
#include <libcpu/byteorder.h>
#ifndef __INSIDE_RTEMS_BSP__
#define __INSIDE_RTEMS_BSP__
#endif
#include "vmeTsi148.h"
#include <bsp/VMEDMA.h>
@@ -136,6 +134,40 @@
#define TSI_VIACK_1_REG 0x204
#define TSI_VMCTRL_REG 0x234
# define TSI_VMCTRL_VSA (1<<27)
# define TSI_VMCTRL_VS (1<<26)
# define TSI_VMCTRL_DHB (1<<25)
# define TSI_VMCTRL_DWB (1<<24)
# define TSI_VMCTRL_RMWEN (1<<20)
# define TSI_VMCTRL_A64DS (1<<16)
# define TSI_VMCTRL_VTOFF_MSK (7<<12)
# define TSI_VMCTRL_VTOFF_0us (0<<12)
# define TSI_VMCTRL_VTOFF_1us (1<<12)
# define TSI_VMCTRL_VTOFF_2us (2<<12)
# define TSI_VMCTRL_VTOFF_4us (3<<12)
# define TSI_VMCTRL_VTOFF_8us (4<<12)
# define TSI_VMCTRL_VTOFF_16us (5<<12)
# define TSI_VMCTRL_VTOFF_32us (6<<12)
# define TSI_VMCTRL_VTOFF_64us (7<<12)
# define TSI_VMCTRL_VTON_MSK (7<< 8)
# define TSI_VMCTRL_VTON_4us (0<< 8)
# define TSI_VMCTRL_VTON_8us (1<< 8)
# define TSI_VMCTRL_VTON_16us (2<< 8)
# define TSI_VMCTRL_VTON_32us (3<< 8)
# define TSI_VMCTRL_VTON_64us (4<< 8)
# define TSI_VMCTRL_VTON_128us (5<< 8)
# define TSI_VMCTRL_VTON_256us (6<< 8)
# define TSI_VMCTRL_VTON_512us (7<< 8)
# define TSI_VMCTRL_VREL_MSK (3<< 3)
# define TSI_VMCTRL_VREL_TON_or_DONE (0<< 3)
# define TSI_VMCTRL_VREL_TONandREQ_or_DONE (1<< 3)
# define TSI_VMCTRL_VREL_TONandBCLR_or_DONE (2<< 3)
# define TSI_VMCTRL_VREL_TONorDONE_and_REQ (3<< 3)
# define TSI_VMCTRL_VFAIR (1<< 2)
# define TSI_VMCTRL_VREQL_MSK (3<< 0)
# define TSI_VMCTRL_VREQL(x) ((x)&3)
#define TSI_VSTAT_REG 0x23c
# define TSI_VSTAT_CPURST (1<<15) /* clear power-up reset bit */
# define TSI_VSTAT_BDFAIL (1<<14)
@@ -310,7 +342,7 @@
#define BSP_PCI_CONFIG_IN_BYTE pci_read_config_byte
#endif
typedef uint32_t pci_ulong;
typedef unsigned int pci_ulong;
#ifdef __BIG_ENDIAN__
static inline void st_be32( uint32_t *a, uint32_t v)
@@ -463,6 +495,7 @@ void
vmeTsi148ResetXX(BERegister *base)
{
int port;
uint32_t v;
CHECK_BASE(base,0, );
@@ -479,6 +512,16 @@ int port;
/* Clear BDFAIL / (--> SYSFAIL) */
# define TSI_VSTAT_BDFAIL (1<<14)
TSI_WR(base, TSI_VSTAT_REG, TSI_RD(base, TSI_VSTAT_REG) & ~TSI_VSTAT_BDFAIL);
/* Set (long) bus master timeout; the timeout actually overrides
* the DMA block size so that the DMA settings would effectively
* not be used.
* Also, we enable 'release on request' mode so that we normally
* don't have to rearbitrate the bus for every transfer.
*/
v = TSI_RD(base, TSI_VMCTRL_REG);
v &= ~( TSI_VMCTRL_VTON_MSK | TSI_VMCTRL_VREL_MSK );
v |= (TSI_VMCTRL_VTON_512us | TSI_VMCTRL_VREL_TONorDONE_and_REQ );
TSI_WR(base, TSI_VMCTRL_REG, v);
}
void