XILINX platform cable USB DLC9 works, too (reported by Johannes Hanika)
[usb-driver] / parport.c
CommitLineData
5e3d963b 1#include <stdio.h>
2#include <fcntl.h>
3#include <errno.h>
4#include <string.h>
5#include <unistd.h>
6#include <inttypes.h>
7#include <sys/types.h>
8#include <sys/ioctl.h>
9#include <linux/parport.h>
10#include <linux/ppdev.h>
11#include "usb-driver.h"
12#include "parport.h"
13
14static int parportfd = -1;
15
25ba7a49 16int parport_transfer(WD_TRANSFER *tr, int fd, unsigned int request, int ppbase, int ecpbase, int num) {
5e3d963b 17 int ret = 0;
18 int i;
19 unsigned long port;
20 unsigned char val;
21 static unsigned char last_pp_write = 0;
22
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);
27
28 port = (unsigned long)tr[i].dwPort;
29 val = tr[i].Data.Byte;
30
31#ifdef DEBUG
32 if (tr[i].cmdTrans == 13)
33 DPRINTF("write byte: %d\n", val);
34#endif
35
36 if (parportfd < 0)
37 return ret;
38
39 if (port == ppbase + PP_DATA) {
40 DPRINTF("data port\n");
41 switch(tr[i].cmdTrans) {
42 case PP_READ:
43 ret = 0; /* We don't support reading of the data port */
44 break;
45
46 case PP_WRITE:
47 ret = ioctl(parportfd, PPWDATA, &val);
48 last_pp_write = val;
49 break;
50
51 default:
52 fprintf(stderr,"!!!Unsupported TRANSFER command: %lu!!!\n", tr[i].cmdTrans);
53 ret = -1;
54 break;
55 }
56 } else if (port == ppbase + PP_STATUS) {
57 DPRINTF("status port (last write: %d)\n", last_pp_write);
58 switch(tr[i].cmdTrans) {
59 case PP_READ:
60 ret = ioctl(parportfd, PPRSTATUS, &val);
61#ifdef FORCE_PC3_IDENT
62 val &= 0x5f;
63 if (last_pp_write & 0x40)
64 val |= 0x20;
65 else
66 val |= 0x80;
67#endif
68 break;
69
70 case PP_WRITE:
71 ret = 0; /* Status Port is readonly */
72 break;
73
74 default:
75 fprintf(stderr,"!!!Unsupported TRANSFER command: %lu!!!\n", tr[i].cmdTrans);
76 ret = -1;
77 break;
78 }
79 } else if (port == ppbase + PP_CONTROL) {
80 DPRINTF("control port\n");
81 switch(tr[i].cmdTrans) {
82 case PP_READ:
83 ret = ioctl(parportfd, PPRCONTROL, &val);
84 break;
85
86 case PP_WRITE:
87 ret = ioctl(parportfd, PPWCONTROL, &val);
88 break;
89
90 default:
91 fprintf(stderr,"!!!Unsupported TRANSFER command: %lu!!!\n", tr[i].cmdTrans);
92 ret = -1;
93 break;
94 }
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");
101 } else {
102 DPRINTF("access to unsupported address range!\n");
103 ret = 0;
104 }
105
106 tr[i].Data.Byte = val;
107
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);
111#ifdef DEBUG
112 if (tr[i].cmdTrans == 10)
113 DPRINTF("read byte: %d\n", tr[i].Data.Byte);
114#endif
115 }
116
117 return ret;
118}
119
120int parport_open(int num) {
121 char ppdev[32];
122
123 if (parportfd < 0) {
124 snprintf(ppdev, sizeof(ppdev), "/dev/parport%u", num);
125 DPRINTF("opening %s\n", ppdev);
126 parportfd = open(ppdev, O_RDWR|O_EXCL);
127
128 if (parportfd < 0)
129 fprintf(stderr,"Can't open %s: %s\n", ppdev, strerror(errno));
130 }
131
132 if (parportfd >= 0) {
133 int pmode;
134
135 if (ioctl(parportfd, PPCLAIM) == -1)
136 return -1;
137
138 pmode = IEEE1284_MODE_COMPAT;
139 if (ioctl(parportfd, PPNEGOT, &pmode) == -1)
140 return -1;
141
142#if 0
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;
148
149 if (ioctl(parportfd, PPNEGOT, &pmode) == -1) {
150 ecpbase = 0;
151 pmode = IEEE1284_MODE_COMPAT;
152 if (ioctl(parportfd, PPNEGOT, &pmode) == -1)
153 return ret;
154 }
155 }
156#endif
157 }
158
159 return parportfd;
160}
161
162void parport_close(int handle) {
163 if (parportfd == handle && parportfd >= 0) {
164 ioctl(parportfd, PPRELEASE);
165 close(parportfd);
166 parportfd = -1;
167 }
168}
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