9 #include <linux/parport.h>
10 #include <linux/ppdev.h>
11 #include "usb-driver.h"
14 static int parportfd = -1;
16 int parport_transfer(WD_TRANSFER *tr, int fd, unsigned int request, int ppbase, int ecpbase, int num) {
21 static unsigned char last_pp_write = 0;
23 for (i = 0; i < num; i++) {
24 DPRINTF("dwPort: 0x%lx, cmdTrans: %lu, dwbytes: %ld, fautoinc: %ld, dwoptions: %ld\n",
25 (unsigned long)tr[i].dwPort, tr[i].cmdTrans, tr[i].dwBytes,
26 tr[i].fAutoinc, tr[i].dwOptions);
28 port = (unsigned long)tr[i].dwPort;
29 val = tr[i].Data.Byte;
32 if (tr[i].cmdTrans == 13)
33 DPRINTF("write byte: %d\n", val);
39 if (port == ppbase + PP_DATA) {
40 DPRINTF("data port\n");
41 switch(tr[i].cmdTrans) {
43 ret = 0; /* We don't support reading of the data port */
47 ret = ioctl(parportfd, PPWDATA, &val);
52 fprintf(stderr,"!!!Unsupported TRANSFER command: %lu!!!\n", tr[i].cmdTrans);
56 } else if (port == ppbase + PP_STATUS) {
57 DPRINTF("status port (last write: %d)\n", last_pp_write);
58 switch(tr[i].cmdTrans) {
60 ret = ioctl(parportfd, PPRSTATUS, &val);
61 #ifdef FORCE_PC3_IDENT
63 if (last_pp_write & 0x40)
71 ret = 0; /* Status Port is readonly */
75 fprintf(stderr,"!!!Unsupported TRANSFER command: %lu!!!\n", tr[i].cmdTrans);
79 } else if (port == ppbase + PP_CONTROL) {
80 DPRINTF("control port\n");
81 switch(tr[i].cmdTrans) {
83 ret = ioctl(parportfd, PPRCONTROL, &val);
87 ret = ioctl(parportfd, PPWCONTROL, &val);
91 fprintf(stderr,"!!!Unsupported TRANSFER command: %lu!!!\n", tr[i].cmdTrans);
95 } else if ((port == ecpbase + PP_ECP_CFGA) && ecpbase) {
96 DPRINTF("ECP_CFGA port\n");
97 } else if ((port == ecpbase + PP_ECP_CFGB) && ecpbase) {
98 DPRINTF("ECP_CFGB port\n");
99 } else if ((port == ecpbase + PP_ECP_ECR) && ecpbase) {
100 DPRINTF("ECP_ECR port\n");
102 DPRINTF("access to unsupported address range!\n");
106 tr[i].Data.Byte = val;
108 DPRINTF("dwPortReturn: 0x%lx, cmdTrans: %lu, dwbytes: %ld, fautoinc: %ld, dwoptions: %ld\n",
109 (unsigned long)tr[i].dwPort, tr[i].cmdTrans, tr[i].dwBytes,
110 tr[i].fAutoinc, tr[i].dwOptions);
112 if (tr[i].cmdTrans == 10)
113 DPRINTF("read byte: %d\n", tr[i].Data.Byte);
120 int parport_open(int num) {
124 snprintf(ppdev, sizeof(ppdev), "/dev/parport%u", num);
125 DPRINTF("opening %s\n", ppdev);
126 parportfd = open(ppdev, O_RDWR|O_EXCL);
129 fprintf(stderr,"Can't open %s: %s\n", ppdev, strerror(errno));
132 if (parportfd >= 0) {
135 if (ioctl(parportfd, PPCLAIM) == -1)
138 pmode = IEEE1284_MODE_COMPAT;
139 if (ioctl(parportfd, PPNEGOT, &pmode) == -1)
143 if (cr->Card.dwItems > 1 && cr->Card.Item[1].I.IO.dwAddr) {
144 DPRINTF("ECP mode requested\n");
145 ecpbase = (unsigned long)cr->Card.Item[1].I.IO.dwAddr;
146 /* TODO: Implement ECP mode */
147 pmode = IEEE1284_MODE_ECP;
149 if (ioctl(parportfd, PPNEGOT, &pmode) == -1) {
151 pmode = IEEE1284_MODE_COMPAT;
152 if (ioctl(parportfd, PPNEGOT, &pmode) == -1)
162 void parport_close(int handle) {
163 if (parportfd == handle && parportfd >= 0) {
164 ioctl(parportfd, PPRELEASE);