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view target-utils/simtest/setup.c @ 619:f82551c77e58

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libserial-newlnx: ASYNC_LOW_LATENCY patch reverted Reports from Das Signal indicate that loadtools performance on Debian is about the same as on Slackware, and that including or omitting the ASYNC_LOW_LATENCY patch from Serg makes no difference. Because the patch in question does not appear to be necessary, it is being reverted until and unless someone other than Serg reports an actual real-world system on which loadtools operation times are slowed compared to the Mother's Slackware reference and on which Slackware-like performance can be restored by setting the ASYNC_LOW_LATENCY flag.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 27 Feb 2020 01:09:48 +0000
parents 06ad5e30e8d0
children
line wrap: on
line source

#include "types.h"
#include "abbdefs.h"
#include "simregs.h"

#define	WAIT_ONE_TDMA	60000

extern u16 abb_reg_read();
extern void abb_reg_write();

u16 conf1_reg;

void
cmd_setup(argbulk)
	char *argbulk;
{
	u16 abb_sim_reg;

	abb_sim_reg = abb_reg_read(VRPCSIM);
	if (!(abb_sim_reg & 2)) {
		printf("ERROR: VRSIM is not enabled\n");
		return;
	}
	if (!(abb_sim_reg & 4)) {
		printf("ERROR: VRSIM is not in proper regulation\n");
		return;
	}

	/* TI's SIM_ManualStart() code follows */
	SIMREGS.conf1 = conf1_reg = 0x8004;
	SIMREGS.cmd = SIM_CMD_CLKEN;

	SIMREGS.cmd = SIM_CMD_CLKEN | SIM_CMD_STOP;
	wait_ARM_cycles(WAIT_ONE_TDMA * 4);

	SIMREGS.cmd = SIM_CMD_CLKEN | SIM_CMD_SWRST;
	wait_ARM_cycles(WAIT_ONE_TDMA);

	SIMREGS.conf2  = 0x0940;

	//enter in manual mode to start the ATR sequence
	SIMREGS.conf1 = conf1_reg |= SIM_CONF1_BYPASS;
	wait_ARM_cycles(WAIT_ONE_TDMA);

	SIMREGS.conf1 = conf1_reg |= SIM_CONF1_SVCCLEV;
	wait_ARM_cycles(WAIT_ONE_TDMA);

	abb_sim_reg |= 8;
	abb_reg_write(VRPCSIM, abb_sim_reg);
	wait_ARM_cycles(WAIT_ONE_TDMA);

	SIMREGS.conf1 = conf1_reg &= ~SIM_CONF1_SIOLOW;
	wait_ARM_cycles(WAIT_ONE_TDMA);

	SIMREGS.conf1 = conf1_reg |= SIM_CONF1_SCLKEN;
	SIMREGS.conf1 = conf1_reg &= ~SIM_CONF1_TXRX; //set to receive mode
}