RAM 6.0 BUX II Series Guia do Utilizador descarregar pdf (Página 90)

VxWorks

BSP Developer’s Guide, 6.0

The default value of the MAX_LAT routine is NULL. Unless the MAX_LAT routine

is changed,

MAX_LAT values are set according to the value of

PCI_MAX_LAT_ALL_SET during autoconfiguration.

The following routines pertain to the user-supplied argument discussed above:

PCI_MAX_LATENCY_ARG_SET

When the routine PCI_MAX_LATENCY_FUNC_SET is called,

PCI_MAX_LATENCY_ARG_SET is passed to the routine as the user-supplied

argument.

The default value is 0.

PCI_MAX_LAT_ALL_SET

If no user-defined argument is specified in

PCI_MAX_LATENCY_FUNC_SET,

PCI_MAX_LAT_ALL_SET specifies a constant maximum latency value for all

devices.

The default value is 0.

PCI_MAX_LAT_ALL_GET

If no user-defined argument is specified in

PCI_MAX_LATENCY_FUNC_SET,

this routine retrieves the value of maximum latency for all PCI devices.

Otherwise, the integer pointed to by pArg is set to the value 0xffffffff.

Error Messages

The argument passed to PCI_MSG_LOG_SET specifies a routine that is called to

print warning or error messages from pciAutoConfigLib. The specified routine

accepts arguments in the same format as logMsg( ), but does not necessarily need

to print the actual message. An example of this routine, which saves the message

into safe memory and turns on an LED, is presented below. This command is

useful for BSPs that call pciAutoCfg( ) before message logging is enabled. If a

routine is specified, it is superseded by logMsg( ) as soon as it is configured. The

default value for this routine is

NULL.

/* sample PCI_MSG_LOG_SET routine */

int pciLogMsg(char *fmt,int a1,int a2,int a3,int a4,int a5,int a6)

{

sysLedOn(4);

return(sprintf(sysExcMsg,fmt,a1,a2,a3,a4,a5,a6));

}

PCI_MSG_LOG_SET

FUNCPTR * pArg

1 2 ... 85 86 87 88 89 90 91 92 93 94 95 ... 188 189

Sem comentários

RAM 6.0 BUX II Series Guia do Utilizador Página 90