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/*****************************************************************************/
/*
* ppnt.c -- Parport direct access with eppflex.sys/vxd.
*
* Copyright (C) 2000 Thomas Sailer (sailer@ife.ee.ethz.ch)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Please note that the GPL allows you to use the driver, NOT the radio.
* In order to use the radio, you need a license from the communications
* authority of your country.
*
*/
/*****************************************************************************/
#include <windows.h>
#include "parport.h"
#include "fpga.h"
/* ---------------------------------------------------------------------- */
#define DEVICE_TYPE DWORD
#include "w9xdrv/eppflex.h"
/* ---------------------------------------------------------------------- */
/* LPT registers */
/* ECP specific registers */
#define LPTREG_ECONTROL 0x402
#define LPTREG_CONFIGB 0x401
#define LPTREG_CONFIGA 0x400
#define LPTREG_TFIFO 0x400
#define LPTREG_DFIFO 0x400
#define LPTREG_AFIFO 0x000
#define LPTREG_DSR 0x001
#define LPTREG_DCR 0x002
/* EPP specific registers */
#define LPTREG_EPPDATA 0x004
#define LPTREG_EPPADDR 0x003
/* standard registers */
#define LPTREG_CONTROL 0x002
#define LPTREG_STATUS 0x001
#define LPTREG_DATA 0x000
/* ECP config A */
#define LPTCFGA_INTRISALEVEL 0x80
#define LPTCFGA_IMPIDMASK 0x70
#define LPTCFGA_IMPID16BIT 0x00
#define LPTCFGA_IMPID8BIT 0x10
#define LPTCFGA_IMPID32BIT 0x20
#define LPTCFGA_NOPIPELINE 0x04
#define LPTCFGA_PWORDCOUNT 0x03
/* ECP config B */
#define LPTCFGB_COMPRESS 0x80
#define LPTCFGB_INTRVALUE 0x40
#define LPTCFGB_IRQMASK 0x38
#define LPTCFGB_IRQ5 0x38
#define LPTCFGB_IRQ15 0x30
#define LPTCFGB_IRQ14 0x28
#define LPTCFGB_IRQ11 0x20
#define LPTCFGB_IRQ10 0x18
#define LPTCFGB_IRQ9 0x10
#define LPTCFGB_IRQ7 0x08
#define LPTCFGB_IRQJUMPER 0x00
#define LPTCFGB_DMAMASK 0x07
#define LPTCFGB_DMA7 0x07
#define LPTCFGB_DMA6 0x06
#define LPTCFGB_DMA5 0x05
#define LPTCFGB_DMAJUMPER16 0x04
#define LPTCFGB_DMA3 0x03
#define LPTCFGB_DMA2 0x02
#define LPTCFGB_DMA1 0x01
#define LPTCFGB_DMAJUMPER8 0x00
/* ECP ECR */
#define LPTECR_MODEMASK 0xe0
#define LPTECR_MODESPP 0x00
#define LPTECR_MODEPS2 0x20
#define LPTECR_MODESPPFIFO 0x40
#define LPTECR_MODEECP 0x60
#define LPTECR_MODEECPEPP 0x80
#define LPTECR_MODETEST 0xc0
#define LPTECR_MODECFG 0xe0
#define LPTECR_NERRINTRDIS 0x10
#define LPTECR_DMAEN 0x08
#define LPTECR_SERVICEINTR 0x04
#define LPTECR_FIFOFULL 0x02
#define LPTECR_FIFOEMPTY 0x01
/* ---------------------------------------------------------------------- */
HANDLE pp_win_handle = INVALID_HANDLE_VALUE;
unsigned int pp_win_flags = 0;
#define FLAGS_PCSPP (1<<0)
#define FLAGS_PCPS2 (1<<1)
#define FLAGS_PCEPP (1<<2)
#define FLAGS_PCECR (1<<3) /* ECR Register Exists */
#define FLAGS_PCECP (1<<4)
#define FLAGS_PCECPEPP (1<<5)
#define FLAGS_PCECPPS2 (1<<6)
/* ---------------------------------------------------------------------- */
unsigned char parport_win_read_data(void)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return 0xff;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_READ_DATA, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res) {
lprintf(0, "Parport: parport_win_read_data failed, error 0x%08lx\n", GetLastError());
return 0xff;
}
if (retl != sizeof(rw)) {
lprintf(0, "Parport: ioctl returned invalid length, %lu\n", retl);
return 0xff;
}
return rw.data;
}
void parport_win_write_data(unsigned char d)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return;
rw.data = d;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_WRITE_DATA, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res)
lprintf(0, "Parport: parport_win_write_data failed, error 0x%08lx\n", GetLastError());
}
unsigned char parport_win_read_status(void)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return 0xff;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_READ_STATUS, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res) {
lprintf(0, "Parport: parport_win_read_status failed, error 0x%08lx\n", GetLastError());
return 0xff;
}
if (retl != sizeof(rw)) {
lprintf(0, "Parport: ioctl returned invalid length, %lu\n", retl);
return 0xff;
}
return rw.data;
}
void parport_win_write_status(unsigned char d)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return;
rw.data = d;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_WRITE_STATUS, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res)
lprintf(0, "Parport: parport_win_write_status failed, error 0x%08lx\n", GetLastError());
}
unsigned char parport_win_read_control(void)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return 0xff;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_READ_CONTROL, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res) {
lprintf(0, "Parport: parport_win_read_control failed, error 0x%08lx\n", GetLastError());
return 0xff;
}
if (retl != sizeof(rw)) {
lprintf(0, "Parport: ioctl returned invalid length, %lu\n", retl);
return 0xff;
}
return rw.data;
}
void parport_win_write_control(unsigned char d)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return;
rw.data = d;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_WRITE_CONTROL, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res)
lprintf(0, "Parport: parport_win_write_control failed, error 0x%08lx\n", GetLastError());
}
void parport_win_frob_control(unsigned char mask, unsigned char val)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return;
rw.data = val;
rw.mask = mask;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_FROB_CONTROL, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res) {
lprintf(0, "Parport: parport_win_frob_control failed, error 0x%08lx\n", GetLastError());
return;
}
if (retl != sizeof(rw)) {
lprintf(0, "Parport: ioctl returned invalid length, %lu\n", retl);
return;
}
}
unsigned char parport_win_read_configa(void)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return 0xff;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_READ_CONFIGA, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res) {
lprintf(0, "Parport: parport_win_read_configa failed, error 0x%08lx\n", GetLastError());
return 0xff;
}
if (retl != sizeof(rw)) {
lprintf(0, "Parport: ioctl returned invalid length, %lu\n", retl);
return 0xff;
}
return rw.data;
}
void parport_win_write_configa(unsigned char d)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return;
rw.data = d;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_WRITE_CONFIGA, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res)
lprintf(0, "Parport: parport_win_write_configa failed, error 0x%08lx\n", GetLastError());
}
unsigned char parport_win_read_configb(void)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return 0xff;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_READ_CONFIGB, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res) {
lprintf(0, "Parport: parport_win_read_configb failed, error 0x%08lx\n", GetLastError());
return 0xff;
}
if (retl != sizeof(rw)) {
lprintf(0, "Parport: ioctl returned invalid length, %lu\n", retl);
return 0xff;
}
return rw.data;
}
void parport_win_write_configb(unsigned char d)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return;
rw.data = d;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_WRITE_CONFIGB, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res)
lprintf(0, "Parport: parport_win_write_configb failed, error 0x%08lx\n", GetLastError());
}
unsigned char parport_win_read_econtrol(void)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return 0xff;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_READ_ECONTROL, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res) {
lprintf(0, "Parport: parport_win_read_econtrol failed, error 0x%08lx\n", GetLastError());
return 0xff;
}
if (retl != sizeof(rw)) {
lprintf(0, "Parport: ioctl returned invalid length, %lu\n", retl);
return 0xff;
}
return rw.data;
}
void parport_win_write_econtrol(unsigned char d)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return;
rw.data = d;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_WRITE_ECONTROL, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res)
lprintf(0, "Parport: parport_win_write_econtrol failed, error 0x%08lx\n", GetLastError());
}
void parport_win_frob_econtrol(unsigned char mask, unsigned char val)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return;
rw.data = val;
rw.mask = mask;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_FROB_ECONTROL, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res) {
lprintf(0, "Parport: parport_win_frob_econtrol failed, error 0x%08lx\n", GetLastError());
return;
}
if (retl != sizeof(rw)) {
lprintf(0, "Parport: ioctl returned invalid length, %lu\n", retl);
return;
}
}
unsigned char parport_win_read_eppaddr(void)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return 0xff;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_READ_EPPADDR, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res) {
lprintf(0, "Parport: parport_win_read_eppaddr failed, error 0x%08lx\n", GetLastError());
return 0xff;
}
if (retl != sizeof(rw)) {
lprintf(0, "Parport: ioctl returned invalid length, %lu\n", retl);
return 0xff;
}
return rw.data;
}
void parport_win_write_eppaddr(unsigned char d)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return;
rw.data = d;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_WRITE_EPPADDR, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res)
lprintf(0, "Parport: parport_win_write_eppaddr failed, error 0x%08lx\n", GetLastError());
}
unsigned char parport_win_read_eppdata(void)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return 0xff;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_READ_EPPDATA, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res) {
lprintf(0, "Parport: parport_win_read_eppdata failed, error 0x%08lx\n", GetLastError());
return 0xff;
}
if (retl != sizeof(rw)) {
lprintf(0, "Parport: ioctl returned invalid length, %lu\n", retl);
return 0xff;
}
return rw.data;
}
void parport_win_write_eppdata(unsigned char d)
{
struct eppflex_rwdata rw;
BOOL res;
DWORD retl;
if (pp_win_handle == INVALID_HANDLE_VALUE)
return;
rw.data = d;
res = DeviceIoControl(pp_win_handle, IOCTL_EPPFLEX_WRITE_EPPDATA, &rw, sizeof(rw), &rw, sizeof(rw), &retl, NULL);
if (!res)
lprintf(0, "Parport: parport_win_write_eppdata failed, error 0x%08lx\n", GetLastError());
}
/* ---------------------------------------------------------------------- */
extern inline void setecr(unsigned char ecr)
{
if (pp_win_flags & FLAGS_PCECR)
parport_win_write_econtrol(ecr);
}
int pp_win_epp_clear_timeout(void)
{
unsigned char r;
if (!(parport_win_read_status() & LPTSTAT_EPPTIMEOUT))
return 1;
/* To clear timeout some chips require double read */
parport_win_read_status();
r = parport_win_read_status();
parport_win_write_status(r | 0x01); /* Some reset by writing 1 */
parport_win_write_status(r & 0xfe); /* Others by writing 0 */
r = parport_win_read_status();
return !(r & 0x01);
}
/* ---------------------------------------------------------------------- */
unsigned parport_win_epp_write_data(const void *buf, unsigned sz)
{
unsigned char *bp = (unsigned char *)buf;
unsigned ret = 0;
setecr(0x90); /* EPP mode */
for (; sz > 0; sz--, bp++) {
parport_win_write_eppdata(*bp);
if (parport_win_read_status() & LPTSTAT_EPPTIMEOUT) {
pp_win_epp_clear_timeout();
goto rt;
}
ret++;
}
rt:
setecr(0x30); /* PS/2 mode */
return ret;
}
unsigned parport_win_epp_read_data(void *buf, unsigned sz)
{
unsigned char *bp = (unsigned char *)buf;
unsigned ret = 0;
setecr(0x90); /* EPP mode */
for (; sz > 0; sz--, bp++) {
*bp = parport_win_read_eppdata();
if (parport_win_read_status() & LPTSTAT_EPPTIMEOUT) {
pp_win_epp_clear_timeout();
goto rt;
}
ret++;
}
rt:
setecr(0x30); /* PS/2 mode */
return ret;
}
unsigned parport_win_epp_write_addr(const void *buf, unsigned sz)
{
unsigned char *bp = (unsigned char *)buf;
unsigned ret = 0;
setecr(0x90); /* EPP mode */
for (; sz > 0; sz--, bp++) {
parport_win_write_eppaddr(*bp);
if (parport_win_read_status() & LPTSTAT_EPPTIMEOUT) {
pp_win_epp_clear_timeout();
goto rt;
}
ret++;
}
rt:
setecr(0x30); /* PS/2 mode */
return ret;
}
unsigned parport_win_epp_read_addr(void *buf, unsigned sz)
{
unsigned char *bp = (unsigned char *)buf;
unsigned ret = 0;
setecr(0x90); /* EPP mode */
for (; sz > 0; sz--, bp++) {
*bp = parport_win_read_eppaddr();
if (parport_win_read_status() & LPTSTAT_EPPTIMEOUT) {
pp_win_epp_clear_timeout();
goto rt;
}
ret++;
}
rt:
setecr(0x30); /* PS/2 mode */
return ret;
}
/* ---------------------------------------------------------------------- */
unsigned parport_win_emul_epp_write_data(const void *buf, unsigned sz)
{
unsigned char *bp = (unsigned char *)buf;
unsigned ret = 0;
unsigned tmo;
parport_win_write_control(LPTCTRL_PROGRAM | LPTCTRL_WRITE);
for (; sz > 0; sz--, bp++) {
parport_win_write_data(*bp);
for (tmo = 0; ; tmo++) {
if (parport_win_read_status() & LPTSTAT_WAIT)
break;
if (tmo > 1000)
return ret;
}
parport_win_write_control(LPTCTRL_PROGRAM | LPTCTRL_WRITE | LPTCTRL_DATASTB);
for (tmo = 0; ; tmo++) {
if (!(parport_win_read_status() & LPTSTAT_WAIT))
break;
if (tmo > 1000)
return ret;
}
parport_win_write_control(LPTCTRL_PROGRAM | LPTCTRL_WRITE);
ret++;
}
return ret;
}
unsigned parport_win_emul_epp_read_data(void *buf, unsigned sz)
{
unsigned char *bp = (unsigned char *)buf;
unsigned ret = 0;
unsigned tmo;
parport_win_write_control(LPTCTRL_PROGRAM | LPTCTRL_DIRECTION);
for (; sz > 0; sz--, bp++) {
for (tmo = 0; ; tmo++) {
if (parport_win_read_status() & LPTSTAT_WAIT)
break;
if (tmo > 1000)
return ret;
}
parport_win_write_control(LPTCTRL_PROGRAM | LPTCTRL_DIRECTION | LPTCTRL_DATASTB);
for (tmo = 0; ; tmo++) {
if (!(parport_win_read_status() & LPTSTAT_WAIT))
break;
if (tmo > 1000)
return ret;
}
*bp = parport_win_read_data();
parport_win_write_control(LPTCTRL_PROGRAM | LPTCTRL_DIRECTION);
ret++;
}
return ret;
}
unsigned parport_win_emul_epp_write_addr(const void *buf, unsigned sz)
{
unsigned char *bp = (unsigned char *)buf;
unsigned ret = 0;
unsigned tmo;
parport_win_write_control(LPTCTRL_PROGRAM | LPTCTRL_WRITE);
for (; sz > 0; sz--, bp++) {
parport_win_write_data(*bp);
for (tmo = 0; ; tmo++) {
if (parport_win_read_status() & LPTSTAT_WAIT)
break;
if (tmo > 1000)
return ret;
}
parport_win_write_control(LPTCTRL_PROGRAM | LPTCTRL_WRITE | LPTCTRL_ADDRSTB);
for (tmo = 0; ; tmo++) {
if (!(parport_win_read_status() & LPTSTAT_WAIT))
break;
if (tmo > 1000)
return ret;
}
parport_win_write_control(LPTCTRL_PROGRAM | LPTCTRL_WRITE);
ret++;
}
return ret;
}
unsigned parport_win_emul_epp_read_addr(void *buf, unsigned sz)
{
unsigned char *bp = (unsigned char *)buf;
unsigned ret = 0;
unsigned tmo;
parport_win_write_control(LPTCTRL_PROGRAM | LPTCTRL_DIRECTION);
for (; sz > 0; sz--, bp++) {
for (tmo = 0; ; tmo++) {
if (parport_win_read_status() & LPTSTAT_WAIT)
break;
if (tmo > 1000)
return ret;
}
parport_win_write_control(LPTCTRL_PROGRAM | LPTCTRL_DIRECTION | LPTCTRL_ADDRSTB);
for (tmo = 0; ; tmo++) {
if (!(parport_win_read_status() & LPTSTAT_WAIT))
break;
if (tmo > 1000)
return ret;
}
*bp = parport_win_read_data();
parport_win_write_control(LPTCTRL_PROGRAM | LPTCTRL_DIRECTION);
ret++;
}
return ret;
}
/* ---------------------------------------------------------------------- */
static int ecp_forward(void)
{
unsigned tmo = 0x10000;
if (parport_win_read_status() & 0x20)
return 0;
/* Event 47: Set nInit high */
parport_win_write_control(0x26);
/* Event 49: PError goes high */
while (!(parport_win_read_status() & 0x20)) {
if (!(--tmo))
return -1;
}
/* start driving the bus */
parport_win_write_control(0x04);
return 0;
}
static int ecp_reverse(void)
{
unsigned tmo = 0x10000;
if (!(parport_win_read_status() & 0x20))
return 0;
parport_win_write_control(0x24);
/* Event 39: Set nInit low to initiate bus reversal */
parport_win_write_control(0x20);
while (parport_win_read_status() & 0x20) {
if (!(--tmo))
return -1;
}
return 0;
}
static unsigned emptyfifo(unsigned cnt)
{
unsigned fcnt = 0;
parport_win_write_econtrol(0xd0); /* FIFOtest mode */
while ((parport_win_read_econtrol() & 0x01) && fcnt < 32 && fcnt < cnt) {
parport_win_read_configa();
fcnt++;
}
lprintf(10, "emptyfifo: FIFO contained %d bytes\n", fcnt);
parport_win_write_econtrol(0x30); /* PS/2 mode */
return cnt - fcnt;
}
unsigned parport_win_ecp_write_data(const void *buf, unsigned sz)
{
const unsigned char *bp = (const unsigned char *)buf;
unsigned ret = 0;
unsigned tmo = 0x10000;
unsigned char stat;
unsigned int i;
if (ecp_forward())
return 0;
parport_win_write_econtrol(0x70); /* ECP mode */
while (sz > 0) {
while ((stat = parport_win_read_econtrol()) & 0x02) {
if (!(--tmo))
return emptyfifo(ret);
}
if (stat & 0x01 && sz >= 8) {
for (i = 0; i < 8; i++)
parport_win_write_configa(bp[i]);
bp += 8;
sz -= 8;
ret += 8;
} else {
parport_win_write_configa(*bp++);
sz--;
ret++;
}
tmo = 0x10000;
}
while (!(parport_win_read_econtrol() & 0x01) || !(parport_win_read_status() & 0x80)) {
if (!(--tmo))
return emptyfifo(ret);
}
parport_win_write_econtrol(0x30); /* PS/2 mode */
return ret;
}
unsigned parport_win_ecp_read_data(void *buf, unsigned sz)
{
unsigned char *bp = (unsigned char *)buf;
unsigned ret = 0;
unsigned tmo = 0x10000;
unsigned char stat;
unsigned int i;
if (ecp_reverse())
return 0;
parport_win_write_econtrol(0x70); /* ECP mode */
while (sz > 0) {
while ((stat = parport_win_read_econtrol()) & 0x01)
if (!(--tmo)) {
parport_win_write_econtrol(0xd0); /* FIFOTEST mode */
while (!(parport_win_read_econtrol() & 0x01) && sz > 0) {
*bp++ = parport_win_read_configa();
sz--;
ret++;
}
parport_win_write_econtrol(0x30); /* PS/2 mode */
return ret;
}
if (stat & 0x02 && sz >= 8) {
for (i = 0; i < 8; i++)
bp[i] = parport_win_read_configa();
bp += 8;
sz -= 8;
ret += 8;
} else {
*bp++ = parport_win_read_configa();
sz--;
ret++;
}
tmo = 0x10000;
}
parport_win_write_econtrol(0x30); /* PS/2 mode */
return ret;
}
unsigned parport_win_ecp_write_addr(const void *buf, unsigned sz)
{
const unsigned char *bp = (const unsigned char *)buf;
unsigned ret = 0;
unsigned tmo = 0x10000;
unsigned char stat;
unsigned int i;
if (ecp_forward())
return 0;
parport_win_write_econtrol(0x70); /* ECP mode */
while (sz > 0) {
while ((stat = parport_win_read_econtrol()) & 0x02) {
if (!(--tmo))
return emptyfifo(ret);
}
if (stat & 0x01 && sz >= 8) {
for (i = 0; i < 8; i++)
parport_win_write_data(bp[i]);
bp += 8;
sz -= 8;
ret += 8;
} else {
parport_win_write_data(*bp++);
sz--;
ret++;
}
tmo = 0x10000;
}
while (!(parport_win_read_econtrol() & 0x01) || !(parport_win_read_status() & 0x80)) {
if (!(--tmo))
return emptyfifo(ret);
}
parport_win_write_econtrol(0x30); /* PS/2 mode */
return ret;
}
/* ---------------------------------------------------------------------- */
unsigned parport_win_emul_ecp_write_data(const void *buf, unsigned sz)
{
unsigned char *bp = (unsigned char *)buf;
unsigned ret;
unsigned char ctl;
unsigned tmo;
if (ecp_forward())
return 0;
ctl = parport_win_read_control() & ~PARPORT_CONTROL_AUTOFD;
/* HostAck high (data, not command) */
parport_win_write_control(ctl);
for (ret = 0; ret < sz; ret++, bp++) {
parport_win_write_data(*bp);
parport_win_write_control(ctl | PARPORT_CONTROL_STROBE);
for (tmo = 0; parport_win_read_status() & PARPORT_STATUS_BUSY; tmo++)
if (tmo > 0x1000)
return ret;
parport_win_write_control(ctl);
for (tmo = 0; !(parport_win_read_status() & PARPORT_STATUS_BUSY); tmo++)
if (tmo > 0x1000)
return ret;
}
return ret;
}
unsigned parport_win_emul_ecp_write_addr(const void *buf, unsigned sz)
{
unsigned char *bp = (unsigned char *)buf;
unsigned ret;
unsigned char ctl;
unsigned tmo;
if (ecp_forward())
return 0;
ctl = parport_win_read_control() | PARPORT_CONTROL_AUTOFD;
/* HostAck low (command, not data) */
parport_win_write_control(ctl);
for (ret = 0; ret < sz; ret++, bp++) {
parport_win_write_data(*bp);
parport_win_write_control(ctl | PARPORT_CONTROL_STROBE);
for (tmo = 0; parport_win_read_status() & PARPORT_STATUS_BUSY; tmo++)
if (tmo > 0x1000)
return ret;
parport_win_write_control(ctl);
for (tmo = 0; !(parport_win_read_status() & PARPORT_STATUS_BUSY); tmo++)
if (tmo > 0x1000)
return ret;
}
return ret;
}
unsigned parport_win_emul_ecp_read_data(void *buf, unsigned sz)
{
unsigned char *bp = (unsigned char *)buf;
unsigned ret = 0;
unsigned char ctl, stat;
int command;
unsigned tmo;
if (ecp_reverse())
return 0;
ctl = parport_win_read_control();
/* Set HostAck low to start accepting data. */
parport_win_write_control(ctl | PARPORT_CONTROL_AUTOFD);
while (ret < sz) {
/* Event 43: Peripheral sets nAck low. It can take as
long as it wants. */
tmo = 0;
do {
stat = parport_win_read_status();
if ((++tmo) > 0x10000)
goto out;
} while (stat & PARPORT_STATUS_ACK);
/* Is this a command? */
command = stat & PARPORT_STATUS_BUSY;
if (command) {
//lprintf(3, "ECP: warning: emulation does not support RLE\n");
goto out;
}
/* Read the data. */
*bp = parport_win_read_data();
/* Event 44: Set HostAck high, acknowledging handshake. */
parport_win_write_control(ctl & ~PARPORT_CONTROL_AUTOFD);
/* Event 45: The peripheral has 35ms to set nAck high. */
tmo = 0;
do {
stat = parport_win_read_status();
if ((++tmo) > 0x10000)
goto out;
} while (!(stat & PARPORT_STATUS_ACK));
/* Event 46: Set HostAck low and accept the data. */
parport_win_write_control(ctl | PARPORT_CONTROL_AUTOFD);
/* Normal data byte. */
bp++;
ret++;
}
out:
return ret;
}
/* ---------------------------------------------------------------------- */
#if 1
unsigned parport_win_fpgaconfig_write(const void *buf, unsigned sz)
{
const unsigned char *bp = buf;
unsigned u;
for (u = 0; u < sz; u++, bp++)
parport_win_write_data(*bp);
return sz;
}
#else
unsigned parport_win_fpgaconfig_write(const void *buf, unsigned sz)
{
const unsigned char *bp = buf;
unsigned ret = 0;
unsigned tmo = 0x10000;
unsigned char stat;
unsigned int i;
if (pp_win_modes & PARPORT_MODE_PCECR) {
parport_win_write_econtrol(0x50); /* COMPAT FIFO mode */
while (sz > 0) {
while ((stat = parport_win_read_econtrol()) & 0x02) {
if (!(--tmo))
return emptyfifo(ret);
}
if (stat & 0x01 && sz >= 8) {
for (i = 0; i < 8; i++)
parport_win_write_configa(bp[i]);
bp += 8;
sz -= 8;
ret += 8;
} else {
parport_win_write_configa(*bp++);
sz--;
ret++;
}
tmo = 0x10000;
}
while (!(parport_win_read_econtrol() & 0x01) || !(parport_win_read_status() & 0x80)) {
if (!(--tmo))
return emptyfifo(ret);
}
parport_win_write_econtrol(0x30); /* PS/2 mode */
return ret;
}
for (ret = 0; ret < sz; ret++, bp++)
parport_win_write_data(*bp);
return sz;
}
#endif
/* ---------------------------------------------------------------------- */
const struct parport_ops parport_win_ops = {
parport_win_read_data,
parport_win_write_data,
parport_win_read_status,
parport_win_read_control,
parport_win_write_control,
parport_win_frob_control,
parport_win_epp_write_data,
parport_win_epp_read_data,
parport_win_epp_write_addr,
parport_win_epp_read_addr,
parport_win_ecp_write_data,
parport_win_ecp_read_data,
parport_win_ecp_write_addr,
parport_win_fpgaconfig_write
};
const struct parport_ops parport_win_emul_ops = {
parport_win_read_data,
parport_win_write_data,
parport_win_read_status,
parport_win_read_control,
parport_win_write_control,
parport_win_frob_control,
parport_win_emul_epp_write_data,
parport_win_emul_epp_read_data,
parport_win_emul_epp_write_addr,
parport_win_emul_epp_read_addr,
parport_win_emul_ecp_write_data,
parport_win_emul_ecp_read_data,
parport_win_emul_ecp_write_addr,
parport_win_fpgaconfig_write
};
/* ---------------------------------------------------------------------- */
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