summaryrefslogtreecommitdiffstats
path: root/kernel/drivers/net/fddi/skfp/h/hwmtm.h
blob: 5924d4219e9e953f67ee50cdd4add750b6d42c16 (plain)
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
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
/******************************************************************************
 *
 *	(C)Copyright 1998,1999 SysKonnect,
 *	a business unit of Schneider & Koch & Co. Datensysteme GmbH.
 *
 *	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.
 *
 *	The information in this file is provided "AS IS" without warranty.
 *
 ******************************************************************************/

#ifndef	_HWM_
#define	_HWM_

#include "mbuf.h"

/*
 * MACRO for DMA synchronization:
 *	The descriptor 'desc' is flushed for the device 'flag'.
 *	Devices are the CPU (DDI_DMA_SYNC_FORCPU) and the
 *	adapter (DDI_DMA_SYNC_FORDEV).
 *
 *	'desc'	Pointer to a Rx or Tx descriptor.
 *	'flag'	Flag for direction (view for CPU or DEVICE) that
 *		should be synchronized.
 *
 *	Empty macros and defines are specified here. The real macro
 *	is os-specific and should be defined in osdef1st.h.
 */
#ifndef DRV_BUF_FLUSH
#define DRV_BUF_FLUSH(desc,flag)
#define DDI_DMA_SYNC_FORCPU
#define DDI_DMA_SYNC_FORDEV
#endif

	/*
	 * hardware modul dependent receive modes
	 */
#define	RX_ENABLE_PASS_SMT	21
#define	RX_DISABLE_PASS_SMT	22
#define	RX_ENABLE_PASS_NSA	23
#define	RX_DISABLE_PASS_NSA	24
#define	RX_ENABLE_PASS_DB	25
#define	RX_DISABLE_PASS_DB	26
#define	RX_DISABLE_PASS_ALL	27
#define	RX_DISABLE_LLC_PROMISC	28
#define	RX_ENABLE_LLC_PROMISC	29


#ifndef	DMA_RD
#define DMA_RD		1	/* memory -> hw */
#endif
#ifndef DMA_WR
#define DMA_WR		2	/* hw -> memory */
#endif
#define SMT_BUF		0x80

	/*
	 * bits of the frame status byte
	 */
#define EN_IRQ_EOF	0x02	/* get IRQ after end of frame transmission */
#define	LOC_TX		0x04	/* send frame to the local SMT */
#define LAST_FRAG	0x08	/* last TxD of the frame */
#define	FIRST_FRAG	0x10	/* first TxD of the frame */
#define	LAN_TX		0x20	/* send frame to network if set */
#define RING_DOWN	0x40	/* error: unable to send, ring down */
#define OUT_OF_TXD	0x80	/* error: not enough TxDs available */


#ifndef NULL
#define NULL 		0
#endif

#ifdef	LITTLE_ENDIAN
#define HWM_REVERSE(x)	(x)
#else
#define	HWM_REVERSE(x)		((((x)<<24L)&0xff000000L)	+	\
				 (((x)<< 8L)&0x00ff0000L)	+	\
				 (((x)>> 8L)&0x0000ff00L)	+	\
				 (((x)>>24L)&0x000000ffL))
#endif

#define C_INDIC		(1L<<25)
#define A_INDIC		(1L<<26)
#define	RD_FS_LOCAL	0x80

	/*
	 * DEBUG FLAGS
	 */
#define	DEBUG_SMTF	1
#define	DEBUG_SMT	2
#define	DEBUG_ECM	3
#define	DEBUG_RMT	4
#define	DEBUG_CFM	5
#define	DEBUG_PCM	6
#define	DEBUG_SBA	7
#define	DEBUG_ESS	8

#define	DB_HWM_RX	10
#define	DB_HWM_TX	11
#define DB_HWM_GEN	12

struct s_mbuf_pool {
#ifndef	MB_OUTSIDE_SMC
	SMbuf		mb[MAX_MBUF] ;		/* mbuf pool */
#endif
	SMbuf		*mb_start ;		/* points to the first mb */
	SMbuf		*mb_free ;		/* free queue */
} ;

struct hwm_r {
	/*
	 * hardware modul specific receive variables
	 */
	u_int			len ;		/* length of the whole frame */
	char			*mb_pos ;	/* SMbuf receive position */
} ;

struct hw_modul {
	/*
	 * All hardware modul specific variables
	 */
	struct	s_mbuf_pool	mbuf_pool ;
	struct	hwm_r	r ;

	union s_fp_descr volatile *descr_p ; /* points to the desriptor area */

	u_short pass_SMT ;		/* pass SMT frames */
	u_short pass_NSA ;		/* pass all NSA frames */
	u_short pass_DB ;		/* pass Direct Beacon Frames */
	u_short pass_llc_promisc ;	/* pass all llc frames (default ON) */

	SMbuf	*llc_rx_pipe ;		/* points to the first queued llc fr */
	SMbuf	*llc_rx_tail ;		/* points to the last queued llc fr */
	int	queued_rx_frames ;	/* number of queued frames */

	SMbuf	*txd_tx_pipe ;		/* points to first mb in the txd ring */
	SMbuf	*txd_tx_tail ;		/* points to last mb in the txd ring */
	int	queued_txd_mb ;		/* number of SMT MBufs in txd ring */

	int	rx_break ;		/* rev. was breaked because ind. off */
	int	leave_isr ;		/* leave fddi_isr immedeately if set */
	int	isr_flag ;		/* set, when HWM is entered from isr */
	/*
	 * variables for the current transmit frame
	 */
	struct s_smt_tx_queue *tx_p ;	/* pointer to the transmit queue */
	u_long	tx_descr ;		/* tx descriptor for FORMAC+ */
	int	tx_len ;		/* tx frame length */
	SMbuf	*tx_mb ;		/* SMT tx MBuf pointer */
	char	*tx_data ;		/* data pointer to the SMT tx Mbuf */

	int	detec_count ;		/* counter for out of RxD condition */
	u_long	rx_len_error ;		/* rx len FORMAC != sum of fragments */
} ;


/*
 * DEBUG structs and macros
 */

#ifdef	DEBUG
struct os_debug {
	int	hwm_rx ;
	int	hwm_tx ;
	int	hwm_gen ;
} ;
#endif

#ifdef	DEBUG
#ifdef	DEBUG_BRD
#define	DB_P	smc->debug
#else
#define DB_P	debug
#endif

#define DB_RX(a,b,c,lev) if (DB_P.d_os.hwm_rx >= (lev))	printf(a,b,c)
#define DB_TX(a,b,c,lev) if (DB_P.d_os.hwm_tx >= (lev))	printf(a,b,c)
#define DB_GEN(a,b,c,lev) if (DB_P.d_os.hwm_gen >= (lev)) printf(a,b,c)
#else	/* DEBUG */
#define DB_RX(a,b,c,lev)
#define DB_TX(a,b,c,lev)
#define DB_GEN(a,b,c,lev)
#endif	/* DEBUG */

#ifndef	SK_BREAK
#define	SK_BREAK()
#endif


/*
 * HWM Macros
 */

/*
 *	BEGIN_MANUAL_ENTRY(HWM_GET_TX_PHYS)
 *	u_long HWM_GET_TX_PHYS(txd)
 *
 * function	MACRO		(hardware module, hwmtm.h)
 *		This macro may be invoked by the OS-specific module to read
 *		the physical address of the specified TxD.
 *
 * para	txd	pointer to the TxD
 *
 *	END_MANUAL_ENTRY
 */
#define	HWM_GET_TX_PHYS(txd)		(u_long)AIX_REVERSE((txd)->txd_tbadr)

/*
 *	BEGIN_MANUAL_ENTRY(HWM_GET_TX_LEN)
 *	int HWM_GET_TX_LEN(txd)
 *
 * function	MACRO		(hardware module, hwmtm.h)
 *		This macro may be invoked by the OS-specific module to read
 *		the fragment length of the specified TxD
 *
 * para	rxd	pointer to the TxD
 *
 * return	the length of the fragment in bytes
 *
 *	END_MANUAL_ENTRY
 */
#define	HWM_GET_TX_LEN(txd)	((int)AIX_REVERSE((txd)->txd_tbctrl)& RD_LENGTH)

/*
 *	BEGIN_MANUAL_ENTRY(HWM_GET_TX_USED)
 *	txd *HWM_GET_TX_USED(smc,queue)
 *
 * function	MACRO		(hardware module, hwmtm.h)
 *		This macro may be invoked by the OS-specific module to get the
 *		number of used TxDs for the queue, specified by the index.
 *
 * para	queue	the number of the send queue: Can be specified by
 *		QUEUE_A0, QUEUE_S or (frame_status & QUEUE_A0)
 *
 * return	number of used TxDs for this send queue
 *
 *	END_MANUAL_ENTRY
 */
#define	HWM_GET_TX_USED(smc,queue)	(int) (smc)->hw.fp.tx_q[queue].tx_used

/*
 *	BEGIN_MANUAL_ENTRY(HWM_GET_CURR_TXD)
 *	txd *HWM_GET_CURR_TXD(smc,queue)
 *
 * function	MACRO		(hardware module, hwmtm.h)
 *		This macro may be invoked by the OS-specific module to get the
 *		pointer to the TxD which points to the current queue put
 *		position.
 *
 * para	queue	the number of the send queue: Can be specified by
 *		QUEUE_A0, QUEUE_S or (frame_status & QUEUE_A0)
 *
 * return	pointer to the current TxD
 *
 *	END_MANUAL_ENTRY
 */
#define	HWM_GET_CURR_TXD(smc,queue)	(struct s_smt_fp_txd volatile *)\
					(smc)->hw.fp.tx_q[queue].tx_curr_put

/*
 *	BEGIN_MANUAL_ENTRY(HWM_GET_RX_FRAG_LEN)
 *	int HWM_GET_RX_FRAG_LEN(rxd)
 *
 * function	MACRO		(hardware module, hwmtm.h)
 *		This macro may be invoked by the OS-specific module to read
 *		the fragment length of the specified RxD
 *
 * para	rxd	pointer to the RxD
 *
 * return	the length of the fragment in bytes
 *
 *	END_MANUAL_ENTRY
 */
#define	HWM_GET_RX_FRAG_LEN(rxd)	((int)AIX_REVERSE((rxd)->rxd_rbctrl)& \
				RD_LENGTH)

/*
 *	BEGIN_MANUAL_ENTRY(HWM_GET_RX_PHYS)
 *	u_long HWM_GET_RX_PHYS(rxd)
 *
 * function	MACRO		(hardware module, hwmtm.h)
 *		This macro may be invoked by the OS-specific module to read
 *		the physical address of the specified RxD.
 *
 * para	rxd	pointer to the RxD
 *
 * return	the RxD's physical pointer to the data fragment
 *
 *	END_MANUAL_ENTRY
 */
#define	HWM_GET_RX_PHYS(rxd)	(u_long)AIX_REVERSE((rxd)->rxd_rbadr)

/*
 *	BEGIN_MANUAL_ENTRY(HWM_GET_RX_USED)
 *	int HWM_GET_RX_USED(smc)
 *
 * function	MACRO		(hardware module, hwmtm.h)
 *		This macro may be invoked by the OS-specific module to get
 *		the count of used RXDs in receive queue 1.
 *
 * return	the used RXD count of receive queue 1
 *
 * NOTE: Remember, because of an ASIC bug at least one RXD should be unused
 *	 in the descriptor ring !
 *
 *	END_MANUAL_ENTRY
 */
#define	HWM_GET_RX_USED(smc)	((int)(smc)->hw.fp.rx_q[QUEUE_R1].rx_used)

/*
 *	BEGIN_MANUAL_ENTRY(HWM_GET_RX_FREE)
 *	int HWM_GET_RX_FREE(smc)
 *
 * function	MACRO		(hardware module, hwmtm.h)
 *		This macro may be invoked by the OS-specific module to get
 *		the rxd_free count of receive queue 1.
 *
 * return	the rxd_free count of receive queue 1
 *
 *	END_MANUAL_ENTRY
 */
#define	HWM_GET_RX_FREE(smc)	((int)(smc)->hw.fp.rx_q[QUEUE_R1].rx_free-1)

/*
 *	BEGIN_MANUAL_ENTRY(HWM_GET_CURR_RXD)
 *	rxd *HWM_GET_CURR_RXD(smc)
 *
 * function	MACRO		(hardware module, hwmtm.h)
 *		This macro may be invoked by the OS-specific module to get the
 *		pointer to the RxD which points to the current queue put
 *		position.
 *
 * return	pointer to the current RxD
 *
 *	END_MANUAL_ENTRY
 */
#define	HWM_GET_CURR_RXD(smc)	(struct s_smt_fp_rxd volatile *)\
				(smc)->hw.fp.rx_q[QUEUE_R1].rx_curr_put

/*
 *	BEGIN_MANUAL_ENTRY(HWM_RX_CHECK)
 *	void HWM_RX_CHECK(smc,low_water)
 *
 * function	MACRO		(hardware module, hwmtm.h)
 *		This macro is invoked by the OS-specific before it left the
 *		function mac_drv_rx_complete. This macro calls mac_drv_fill_rxd
 *		if the number of used RxDs is equal or lower than the
 *		the given low water mark.
 *
 * para	low_water	low water mark of used RxD's
 *
 *	END_MANUAL_ENTRY
 */
#ifndef HWM_NO_FLOW_CTL
#define	HWM_RX_CHECK(smc,low_water) {\
	if ((low_water) >= (smc)->hw.fp.rx_q[QUEUE_R1].rx_used) {\
		mac_drv_fill_rxd(smc) ;\
	}\
}
#else
#define	HWM_RX_CHECK(smc,low_water)		mac_drv_fill_rxd(smc)
#endif

#ifndef	HWM_EBASE
#define	HWM_EBASE	500
#endif

#define	HWM_E0001	HWM_EBASE + 1
#define	HWM_E0001_MSG	"HWM: Wrong size of s_rxd_os struct"
#define	HWM_E0002	HWM_EBASE + 2
#define	HWM_E0002_MSG	"HWM: Wrong size of s_txd_os struct"
#define	HWM_E0003	HWM_EBASE + 3
#define	HWM_E0003_MSG	"HWM: smt_free_mbuf() called with NULL pointer"
#define	HWM_E0004	HWM_EBASE + 4
#define	HWM_E0004_MSG	"HWM: Parity error rx queue 1"
#define	HWM_E0005	HWM_EBASE + 5
#define	HWM_E0005_MSG	"HWM: Encoding error rx queue 1"
#define	HWM_E0006	HWM_EBASE + 6
#define	HWM_E0006_MSG	"HWM: Encoding error async tx queue"
#define	HWM_E0007	HWM_EBASE + 7
#define	HWM_E0007_MSG	"HWM: Encoding error sync tx queue"
#define	HWM_E0008	HWM_EBASE + 8
#define	HWM_E0008_MSG	""
#define	HWM_E0009	HWM_EBASE + 9
#define	HWM_E0009_MSG	"HWM: Out of RxD condition detected"
#define	HWM_E0010	HWM_EBASE + 10
#define	HWM_E0010_MSG	"HWM: A protocol layer has tried to send a frame with an invalid frame control"
#define HWM_E0011	HWM_EBASE + 11
#define HWM_E0011_MSG	"HWM: mac_drv_clear_tx_queue was called although the hardware wasn't stopped"
#define HWM_E0012	HWM_EBASE + 12
#define HWM_E0012_MSG	"HWM: mac_drv_clear_rx_queue was called although the hardware wasn't stopped"
#define HWM_E0013	HWM_EBASE + 13
#define HWM_E0013_MSG	"HWM: mac_drv_repair_descr was called although the hardware wasn't stopped"

#endif