1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
|
/* Generic NS8390 register definitions. */
/* This file is part of Donald Becker's 8390 drivers, and is distributed
under the same license. Auto-loading of 8390.o added by Paul Gortmaker.
Some of these names and comments originated from the Crynwr
packet drivers, which are distributed under the GPL. */
#ifndef _8390_h
#define _8390_h
#include <linux/config.h>
#include <linux/if_ether.h>
#include <linux/ioport.h>
#include <linux/skbuff.h>
/* With kmod, drivers can now load the 8390 module themselves! */
#if 0 /* def CONFIG_KMOD */
#define LOAD_8390_BY_KMOD
#endif
#define TX_2X_PAGES 12
#define TX_1X_PAGES 6
/* Should always use two Tx slots to get back-to-back transmits. */
#define EI_PINGPONG
#ifdef EI_PINGPONG
#define TX_PAGES TX_2X_PAGES
#else
#define TX_PAGES TX_1X_PAGES
#endif
#define ETHER_ADDR_LEN 6
/* The 8390 specific per-packet-header format. */
struct e8390_pkt_hdr {
unsigned char status; /* status */
unsigned char next; /* pointer to next packet. */
unsigned short count; /* header + packet length in bytes */
};
#ifdef notdef
extern int ei_debug;
#else
#define ei_debug 1
#endif
#ifndef HAVE_AUTOIRQ
/* From auto_irq.c */
extern void autoirq_setup(int waittime);
extern unsigned long autoirq_report(int waittime);
#endif
#if defined(LOAD_8390_BY_KMOD) && defined(MODULE) && !defined(NS8390_CORE)
/* Function pointers to be mapped onto the 8390 core support */
static int (*S_ethdev_init)(struct net_device *dev);
static void (*S_NS8390_init)(struct net_device *dev, int startp);
static int (*S_ei_open)(struct net_device *dev);
static int (*S_ei_close)(struct net_device *dev);
static void (*S_ei_interrupt)(int irq, void *dev_id, struct pt_regs *regs);
#define NS8390_KSYSMS_PRESENT ( \
get_module_symbol(NULL, "ethdev_init") != 0 && \
get_module_symbol(NULL, "NS8390_init") != 0 && \
get_module_symbol(NULL, "ei_open") != 0 && \
get_module_symbol(NULL, "ei_close") != 0 && \
get_module_symbol(NULL, "ei_interrupt") != 0)
extern __inline__ int load_8390_module(const char *driver)
{
if (! NS8390_KSYSMS_PRESENT) {
int (*request_mod)(const char *module_name);
if (get_module_symbol("", "request_module") == 0) {
printk("%s: module auto-load (kmod) support not present.\n", driver);
printk("%s: unable to auto-load required 8390 module.\n", driver);
printk("%s: try \"modprobe 8390\" as root 1st.\n", driver);
return -ENOSYS;
}
request_mod = (void*)get_module_symbol("", "request_module");
if (request_mod("8390")) {
printk("%s: request to load the 8390 module failed.\n", driver);
return -ENOSYS;
}
/* Check if module really loaded and is valid */
if (! NS8390_KSYSMS_PRESENT) {
printk("%s: 8390.o not found/invalid or failed to load.\n", driver);
return -ENOSYS;
}
printk(KERN_INFO "%s: auto-loaded 8390 module.\n", driver);
}
/* Map the functions into place */
S_ethdev_init = (void*)get_module_symbol(0, "ethdev_init");
S_NS8390_init = (void*)get_module_symbol(0, "NS8390_init");
S_ei_open = (void*)get_module_symbol(0, "ei_open");
S_ei_close = (void*)get_module_symbol(0, "ei_close");
S_ei_interrupt = (void*)get_module_symbol(0, "ei_interrupt");
return 0;
}
/*
* Since a kmod aware driver won't explicitly show a dependence on the
* exported 8390 functions (due to the mapping above), the 8390 module
* (if present, and not in-kernel) needs to be protected from garbage
* collection. NS8390_module is only defined for a modular 8390 core.
*/
extern __inline__ void lock_8390_module(void)
{
struct module **mod = (struct module**)get_module_symbol(0, "NS8390_module");
if (mod != NULL && *mod != NULL)
__MOD_INC_USE_COUNT(*mod);
}
extern __inline__ void unlock_8390_module(void)
{
struct module **mod = (struct module**)get_module_symbol(0, "NS8390_module");
if (mod != NULL && *mod != NULL)
__MOD_DEC_USE_COUNT(*mod);
}
/*
* These are last so they only have scope over the driver
* code (wd, ne, 3c503, etc.) and not over the above code.
*/
#define ethdev_init S_ethdev_init
#define NS8390_init S_NS8390_init
#define ei_open S_ei_open
#define ei_close S_ei_close
#define ei_interrupt S_ei_interrupt
#else /* not a module or kmod support not wanted */
#define load_8390_module(driver) 0
#define lock_8390_module() do { } while (0)
#define unlock_8390_module() do { } while (0)
extern int ethdev_init(struct net_device *dev);
extern void NS8390_init(struct net_device *dev, int startp);
extern int ei_open(struct net_device *dev);
extern int ei_close(struct net_device *dev);
extern void ei_interrupt(int irq, void *dev_id, struct pt_regs *regs);
#endif
/* Most of these entries should be in 'struct net_device' (or most of the
things in there should be here!) */
/* You have one of these per-board */
struct ei_device {
const char *name;
void (*reset_8390)(struct net_device *);
void (*get_8390_hdr)(struct net_device *, struct e8390_pkt_hdr *, int);
void (*block_output)(struct net_device *, int, const unsigned char *, int);
void (*block_input)(struct net_device *, int, struct sk_buff *, int);
unsigned char mcfilter[8];
unsigned open:1;
unsigned word16:1; /* We have the 16-bit (vs 8-bit) version of the card. */
unsigned txing:1; /* Transmit Active */
unsigned irqlock:1; /* 8390's intrs disabled when '1'. */
unsigned dmaing:1; /* Remote DMA Active */
unsigned char tx_start_page, rx_start_page, stop_page;
unsigned char current_page; /* Read pointer in buffer */
unsigned char interface_num; /* Net port (AUI, 10bT.) to use. */
unsigned char txqueue; /* Tx Packet buffer queue length. */
short tx1, tx2; /* Packet lengths for ping-pong tx. */
short lasttx; /* Alpha version consistency check. */
unsigned char reg0; /* Register '0' in a WD8013 */
unsigned char reg5; /* Register '5' in a WD8013 */
unsigned char saved_irq; /* Original dev->irq value. */
struct net_device_stats stat; /* The new statistics table. */
u32 *reg_offset; /* Register mapping table */
spinlock_t page_lock; /* Page register locks */
unsigned long priv; /* Private field to store bus IDs etc. */
};
/* The maximum number of 8390 interrupt service routines called per IRQ. */
#define MAX_SERVICE 12
/* The maximum time waited (in jiffies) before assuming a Tx failed. (20ms) */
#define TX_TIMEOUT (20*HZ/100)
#define ei_status (*(struct ei_device *)(dev->priv))
/* Some generic ethernet register configurations. */
#define E8390_TX_IRQ_MASK 0xa /* For register EN0_ISR */
#define E8390_RX_IRQ_MASK 0x5
#define E8390_RXCONFIG 0x4 /* EN0_RXCR: broadcasts, no multicast,errors */
#define E8390_RXOFF 0x20 /* EN0_RXCR: Accept no packets */
#define E8390_TXCONFIG 0x00 /* EN0_TXCR: Normal transmit mode */
#define E8390_TXOFF 0x02 /* EN0_TXCR: Transmitter off */
/* Register accessed at EN_CMD, the 8390 base addr. */
#define E8390_STOP 0x01 /* Stop and reset the chip */
#define E8390_START 0x02 /* Start the chip, clear reset */
#define E8390_TRANS 0x04 /* Transmit a frame */
#define E8390_RREAD 0x08 /* Remote read */
#define E8390_RWRITE 0x10 /* Remote write */
#define E8390_NODMA 0x20 /* Remote DMA */
#define E8390_PAGE0 0x00 /* Select page chip registers */
#define E8390_PAGE1 0x40 /* using the two high-order bits */
#define E8390_PAGE2 0x80 /* Page 3 is invalid. */
/*
* Only generate indirect loads given a machine that needs them.
*/
#if defined(CONFIG_MAC) || defined(CONFIG_AMIGA_PCMCIA) || \
defined(CONFIG_ARIADNE2) || defined(CONFIG_ARIADNE2_MODULE)
#define EI_SHIFT(x) (ei_local->reg_offset[x])
#else
#define EI_SHIFT(x) (x)
#endif
#define E8390_CMD EI_SHIFT(0x00) /* The command register (for all pages) */
/* Page 0 register offsets. */
#define EN0_CLDALO EI_SHIFT(0x01) /* Low byte of current local dma addr RD */
#define EN0_STARTPG EI_SHIFT(0x01) /* Starting page of ring bfr WR */
#define EN0_CLDAHI EI_SHIFT(0x02) /* High byte of current local dma addr RD */
#define EN0_STOPPG EI_SHIFT(0x02) /* Ending page +1 of ring bfr WR */
#define EN0_BOUNDARY EI_SHIFT(0x03) /* Boundary page of ring bfr RD WR */
#define EN0_TSR EI_SHIFT(0x04) /* Transmit status reg RD */
#define EN0_TPSR EI_SHIFT(0x04) /* Transmit starting page WR */
#define EN0_NCR EI_SHIFT(0x05) /* Number of collision reg RD */
#define EN0_TCNTLO EI_SHIFT(0x05) /* Low byte of tx byte count WR */
#define EN0_FIFO EI_SHIFT(0x06) /* FIFO RD */
#define EN0_TCNTHI EI_SHIFT(0x06) /* High byte of tx byte count WR */
#define EN0_ISR EI_SHIFT(0x07) /* Interrupt status reg RD WR */
#define EN0_CRDALO EI_SHIFT(0x08) /* low byte of current remote dma address RD */
#define EN0_RSARLO EI_SHIFT(0x08) /* Remote start address reg 0 */
#define EN0_CRDAHI EI_SHIFT(0x09) /* high byte, current remote dma address RD */
#define EN0_RSARHI EI_SHIFT(0x09) /* Remote start address reg 1 */
#define EN0_RCNTLO EI_SHIFT(0x0a) /* Remote byte count reg WR */
#define EN0_RCNTHI EI_SHIFT(0x0b) /* Remote byte count reg WR */
#define EN0_RSR EI_SHIFT(0x0c) /* rx status reg RD */
#define EN0_RXCR EI_SHIFT(0x0c) /* RX configuration reg WR */
#define EN0_TXCR EI_SHIFT(0x0d) /* TX configuration reg WR */
#define EN0_COUNTER0 EI_SHIFT(0x0d) /* Rcv alignment error counter RD */
#define EN0_DCFG EI_SHIFT(0x0e) /* Data configuration reg WR */
#define EN0_COUNTER1 EI_SHIFT(0x0e) /* Rcv CRC error counter RD */
#define EN0_IMR EI_SHIFT(0x0f) /* Interrupt mask reg WR */
#define EN0_COUNTER2 EI_SHIFT(0x0f) /* Rcv missed frame error counter RD */
/* Bits in EN0_ISR - Interrupt status register */
#define ENISR_RX 0x01 /* Receiver, no error */
#define ENISR_TX 0x02 /* Transmitter, no error */
#define ENISR_RX_ERR 0x04 /* Receiver, with error */
#define ENISR_TX_ERR 0x08 /* Transmitter, with error */
#define ENISR_OVER 0x10 /* Receiver overwrote the ring */
#define ENISR_COUNTERS 0x20 /* Counters need emptying */
#define ENISR_RDC 0x40 /* remote dma complete */
#define ENISR_RESET 0x80 /* Reset completed */
#define ENISR_ALL 0x3f /* Interrupts we will enable */
/* Bits in EN0_DCFG - Data config register */
#define ENDCFG_WTS 0x01 /* word transfer mode selection */
/* Page 1 register offsets. */
#define EN1_PHYS EI_SHIFT(0x01) /* This board's physical enet addr RD WR */
#define EN1_PHYS_SHIFT(i) EI_SHIFT(i+1) /* Get and set mac address */
#define EN1_CURPAG EI_SHIFT(0x07) /* Current memory page RD WR */
#define EN1_MULT EI_SHIFT(0x08) /* Multicast filter mask array (8 bytes) RD WR */
#define EN1_MULT_SHIFT(i) EI_SHIFT(8+i) /* Get and set multicast filter */
/* Bits in received packet status byte and EN0_RSR*/
#define ENRSR_RXOK 0x01 /* Received a good packet */
#define ENRSR_CRC 0x02 /* CRC error */
#define ENRSR_FAE 0x04 /* frame alignment error */
#define ENRSR_FO 0x08 /* FIFO overrun */
#define ENRSR_MPA 0x10 /* missed pkt */
#define ENRSR_PHY 0x20 /* physical/multicast address */
#define ENRSR_DIS 0x40 /* receiver disable. set in monitor mode */
#define ENRSR_DEF 0x80 /* deferring */
/* Transmitted packet status, EN0_TSR. */
#define ENTSR_PTX 0x01 /* Packet transmitted without error */
#define ENTSR_ND 0x02 /* The transmit wasn't deferred. */
#define ENTSR_COL 0x04 /* The transmit collided at least once. */
#define ENTSR_ABT 0x08 /* The transmit collided 16 times, and was deferred. */
#define ENTSR_CRS 0x10 /* The carrier sense was lost. */
#define ENTSR_FU 0x20 /* A "FIFO underrun" occurred during transmit. */
#define ENTSR_CDH 0x40 /* The collision detect "heartbeat" signal was lost. */
#define ENTSR_OWC 0x80 /* There was an out-of-window collision. */
#endif /* _8390_h */
|
