1 /*
2 * Supposed NE2000 PCMCIA clones, see the comments in ether2000.c
3 */
4 #include "u.h"
5 #include "../port/lib.h"
6 #include "mem.h"
7 #include "dat.h"
8 #include "fns.h"
9 #include "io.h"
10 #include "../port/error.h"
11 #include "../port/netif.h"
12
13 #include "etherif.h"
14 #include "ether8390.h"
15
16 enum {
17 Data = 0x10, /* offset from I/O base of data port */
18 Reset = 0x1F, /* offset from I/O base of reset port */
19 };
20
21 typedef struct Ec2t {
22 char* name;
23 int iochecksum;
24 } Ec2t;
25
26 static Ec2t ec2tpcmcia[] = {
27 { "EC2T", 0, }, /* Linksys Combo PCMCIA EthernetCard */
28 { "PCMPC100", 1, }, /* EtherFast 10/100 PC Card */
29 { "PCM100", 1, }, /* EtherFast PCM100 Card */
30 { "EN2216", 0, }, /* Accton EtherPair-PCMCIA */
31 { "FA410TX", 1, }, /* Netgear FA410TX */
32 { "FA411", 0 }, /* Netgear FA411 PCMCIA */
33 { "Network Everywhere", 0, }, /* Linksys NP10T 10BaseT Card */
34 { "10/100 Port Attached", 1, }, /* SMC 8040TX */
35 { "8041TX-10/100-PC-Card-V2", 0 }, /* SMC 8041TX */
36 { "SMC8022", 0}, /* SMC 8022 / EZCard-10-PCMCIA */
37 { nil, 0, },
38 };
39
40 static int
reset(Ether * ether)41 reset(Ether* ether)
42 {
43 ushort buf[16];
44 ulong port;
45 Dp8390 *ctlr;
46 int i, slot;
47 uchar ea[Eaddrlen], sum, x;
48 Ec2t *ec2t, tmpec2t;
49
50 /*
51 * Set up the software configuration.
52 * Use defaults for port, irq, mem and size
53 * if not specified.
54 * The manual says 16KB memory, the box
55 * says 32KB. The manual seems to be correct.
56 */
57 if(ether->port == 0)
58 ether->port = 0x300;
59 if(ether->irq == 0)
60 ether->irq = 9;
61 if(ether->mem == 0)
62 ether->mem = 0x4000;
63 if(ether->size == 0)
64 ether->size = 16*1024;
65 port = ether->port;
66
67 if(ioalloc(ether->port, 0x20, 0, "ec2t") < 0)
68 return -1;
69 slot = -1;
70 for(ec2t = ec2tpcmcia; ec2t->name != nil; ec2t++){
71 if((slot = pcmspecial(ec2t->name, ether)) >= 0)
72 break;
73 }
74 if(ec2t->name == nil){
75 ec2t = &tmpec2t;
76 ec2t->name = nil;
77 ec2t->iochecksum = 0;
78 for(i = 0; i < ether->nopt; i++){
79 if(cistrncmp(ether->opt[i], "id=", 3) == 0){
80 ec2t->name = ðer->opt[i][3];
81 slot = pcmspecial(ec2t->name, ether);
82 }
83 else if(cistrncmp(ether->opt[i], "iochecksum", 10) == 0)
84 ec2t->iochecksum = 1;
85 }
86 }
87 if(slot < 0){
88 iofree(port);
89 return -1;
90 }
91
92 ether->ctlr = malloc(sizeof(Dp8390));
93 ctlr = ether->ctlr;
94 if(ctlr == nil) {
95 iofree(port);
96 error(Enomem);
97 }
98 ctlr->width = 2;
99 ctlr->ram = 0;
100
101 ctlr->port = port;
102 ctlr->data = port+Data;
103
104 ctlr->tstart = HOWMANY(ether->mem, Dp8390BufSz);
105 ctlr->pstart = ctlr->tstart + HOWMANY(sizeof(Etherpkt), Dp8390BufSz);
106 ctlr->pstop = ctlr->tstart + HOWMANY(ether->size, Dp8390BufSz);
107
108 ctlr->dummyrr = 0;
109 for(i = 0; i < ether->nopt; i++){
110 if(cistrcmp(ether->opt[i], "nodummyrr") == 0)
111 ctlr->dummyrr = 0;
112 else if(cistrncmp(ether->opt[i], "dummyrr=", 8) == 0)
113 ctlr->dummyrr = strtol(ðer->opt[i][8], nil, 0);
114 }
115
116 /*
117 * Reset the board. This is done by doing a read
118 * followed by a write to the Reset address.
119 */
120 buf[0] = inb(port+Reset);
121 delay(2);
122 outb(port+Reset, buf[0]);
123 delay(2);
124
125 /*
126 * Init the (possible) chip, then use the (possible)
127 * chip to read the (possible) PROM for ethernet address
128 * and a marker byte.
129 * Could just look at the DP8390 command register after
130 * initialisation has been tried, but that wouldn't be
131 * enough, there are other ethernet boards which could
132 * match.
133 */
134 dp8390reset(ether);
135 sum = 0;
136 if(ec2t->iochecksum){
137 /*
138 * These cards have the ethernet address in I/O space.
139 * There's a checksum over 8 bytes which sums to 0xFF.
140 */
141 for(i = 0; i < 8; i++){
142 x = inb(port+0x14+i);
143 sum += x;
144 buf[i] = (x<<8)|x;
145 }
146 }
147 else{
148 memset(buf, 0, sizeof(buf));
149 dp8390read(ctlr, buf, 0, sizeof(buf));
150 if((buf[0x0E] & 0xFF) == 0x57 && (buf[0x0F] & 0xFF) == 0x57)
151 sum = 0xFF;
152 }
153 if(sum != 0xFF){
154 pcmspecialclose(slot);
155 iofree(ether->port);
156 free(ether->ctlr);
157 return -1;
158 }
159
160 /*
161 * Stupid machine. Shorts were asked for,
162 * shorts were delivered, although the PROM is a byte array.
163 * Set the ethernet address.
164 */
165 memset(ea, 0, Eaddrlen);
166 if(memcmp(ea, ether->ea, Eaddrlen) == 0){
167 for(i = 0; i < sizeof(ether->ea); i++)
168 ether->ea[i] = buf[i];
169 }
170 dp8390setea(ether);
171
172 return 0;
173 }
174
175 void
etherec2tlink(void)176 etherec2tlink(void)
177 {
178 addethercard("EC2T", reset);
179 }
180