2 * Header file for sonic.c
4 * (C) Waldorf Electronics, Germany
5 * Written by Andreas Busse
7 * NOTE: most of the structure definitions here are endian dependent.
8 * If you want to use this driver on big endian machines, the data
9 * and pad structure members must be exchanged. Also, the structures
10 * need to be changed accordingly to the bus size.
12 * 981229 MSch: did just that for the 68k Mac port (32 bit, big endian)
14 * 990611 David Huggins-Daines <dhd@debian.org>: This machine abstraction
15 * does not cope with 16-bit bus sizes very well. Therefore I have
16 * rewritten it with ugly macros and evil inlines.
18 * 050625 Finn Thain: introduced more 32-bit cards and dhd's support
19 * for 16-bit cards (from the mac68k project).
25 #include <linux/config.h>
28 * SONIC register offsets
31 #define SONIC_CMD 0x00
32 #define SONIC_DCR 0x01
33 #define SONIC_RCR 0x02
34 #define SONIC_TCR 0x03
35 #define SONIC_IMR 0x04
36 #define SONIC_ISR 0x05
38 #define SONIC_UTDA 0x06
39 #define SONIC_CTDA 0x07
41 #define SONIC_URDA 0x0d
42 #define SONIC_CRDA 0x0e
43 #define SONIC_EOBC 0x13
44 #define SONIC_URRA 0x14
45 #define SONIC_RSA 0x15
46 #define SONIC_REA 0x16
47 #define SONIC_RRP 0x17
48 #define SONIC_RWP 0x18
49 #define SONIC_RSC 0x2b
51 #define SONIC_CEP 0x21
52 #define SONIC_CAP2 0x22
53 #define SONIC_CAP1 0x23
54 #define SONIC_CAP0 0x24
56 #define SONIC_CDP 0x26
57 #define SONIC_CDC 0x27
59 #define SONIC_WT0 0x29
60 #define SONIC_WT1 0x2a
65 /* test-only registers */
67 #define SONIC_TPS 0x08
68 #define SONIC_TFC 0x09
69 #define SONIC_TSA0 0x0a
70 #define SONIC_TSA1 0x0b
71 #define SONIC_TFS 0x0c
73 #define SONIC_CRBA0 0x0f
74 #define SONIC_CRBA1 0x10
75 #define SONIC_RBWC0 0x11
76 #define SONIC_RBWC1 0x12
77 #define SONIC_TTDA 0x20
78 #define SONIC_MDT 0x2f
80 #define SONIC_TRBA0 0x19
81 #define SONIC_TRBA1 0x1a
82 #define SONIC_TBWC0 0x1b
83 #define SONIC_TBWC1 0x1c
84 #define SONIC_LLFA 0x1f
86 #define SONIC_ADDR0 0x1d
87 #define SONIC_ADDR1 0x1e
93 #define SONIC_CRCT 0x2c
94 #define SONIC_FAET 0x2d
95 #define SONIC_MPT 0x2e
97 #define SONIC_DCR2 0x3f
103 #define SONIC_CR_LCAM 0x0200
104 #define SONIC_CR_RRRA 0x0100
105 #define SONIC_CR_RST 0x0080
106 #define SONIC_CR_ST 0x0020
107 #define SONIC_CR_STP 0x0010
108 #define SONIC_CR_RXEN 0x0008
109 #define SONIC_CR_RXDIS 0x0004
110 #define SONIC_CR_TXP 0x0002
111 #define SONIC_CR_HTX 0x0001
114 * SONIC data configuration bits
117 #define SONIC_DCR_EXBUS 0x8000
118 #define SONIC_DCR_LBR 0x2000
119 #define SONIC_DCR_PO1 0x1000
120 #define SONIC_DCR_PO0 0x0800
121 #define SONIC_DCR_SBUS 0x0400
122 #define SONIC_DCR_USR1 0x0200
123 #define SONIC_DCR_USR0 0x0100
124 #define SONIC_DCR_WC1 0x0080
125 #define SONIC_DCR_WC0 0x0040
126 #define SONIC_DCR_DW 0x0020
127 #define SONIC_DCR_BMS 0x0010
128 #define SONIC_DCR_RFT1 0x0008
129 #define SONIC_DCR_RFT0 0x0004
130 #define SONIC_DCR_TFT1 0x0002
131 #define SONIC_DCR_TFT0 0x0001
134 * Constants for the SONIC receive control register.
137 #define SONIC_RCR_ERR 0x8000
138 #define SONIC_RCR_RNT 0x4000
139 #define SONIC_RCR_BRD 0x2000
140 #define SONIC_RCR_PRO 0x1000
141 #define SONIC_RCR_AMC 0x0800
142 #define SONIC_RCR_LB1 0x0400
143 #define SONIC_RCR_LB0 0x0200
145 #define SONIC_RCR_MC 0x0100
146 #define SONIC_RCR_BC 0x0080
147 #define SONIC_RCR_LPKT 0x0040
148 #define SONIC_RCR_CRS 0x0020
149 #define SONIC_RCR_COL 0x0010
150 #define SONIC_RCR_CRCR 0x0008
151 #define SONIC_RCR_FAER 0x0004
152 #define SONIC_RCR_LBK 0x0002
153 #define SONIC_RCR_PRX 0x0001
155 #define SONIC_RCR_LB_OFF 0
156 #define SONIC_RCR_LB_MAC SONIC_RCR_LB0
157 #define SONIC_RCR_LB_ENDEC SONIC_RCR_LB1
158 #define SONIC_RCR_LB_TRANS (SONIC_RCR_LB0 | SONIC_RCR_LB1)
160 /* default RCR setup */
162 #define SONIC_RCR_DEFAULT (SONIC_RCR_BRD)
166 * SONIC Transmit Control register bits
169 #define SONIC_TCR_PINTR 0x8000
170 #define SONIC_TCR_POWC 0x4000
171 #define SONIC_TCR_CRCI 0x2000
172 #define SONIC_TCR_EXDIS 0x1000
173 #define SONIC_TCR_EXD 0x0400
174 #define SONIC_TCR_DEF 0x0200
175 #define SONIC_TCR_NCRS 0x0100
176 #define SONIC_TCR_CRLS 0x0080
177 #define SONIC_TCR_EXC 0x0040
178 #define SONIC_TCR_PMB 0x0008
179 #define SONIC_TCR_FU 0x0004
180 #define SONIC_TCR_BCM 0x0002
181 #define SONIC_TCR_PTX 0x0001
183 #define SONIC_TCR_DEFAULT 0x0000
186 * Constants for the SONIC_INTERRUPT_MASK and
187 * SONIC_INTERRUPT_STATUS registers.
190 #define SONIC_INT_BR 0x4000
191 #define SONIC_INT_HBL 0x2000
192 #define SONIC_INT_LCD 0x1000
193 #define SONIC_INT_PINT 0x0800
194 #define SONIC_INT_PKTRX 0x0400
195 #define SONIC_INT_TXDN 0x0200
196 #define SONIC_INT_TXER 0x0100
197 #define SONIC_INT_TC 0x0080
198 #define SONIC_INT_RDE 0x0040
199 #define SONIC_INT_RBE 0x0020
200 #define SONIC_INT_RBAE 0x0010
201 #define SONIC_INT_CRC 0x0008
202 #define SONIC_INT_FAE 0x0004
203 #define SONIC_INT_MP 0x0002
204 #define SONIC_INT_RFO 0x0001
208 * The interrupts we allow.
211 #define SONIC_IMR_DEFAULT ( SONIC_INT_BR | \
224 #define SONIC_EOL 0x0001
225 #define CAM_DESCRIPTORS 16
227 /* Offsets in the various DMA buffers accessed by the SONIC */
229 #define SONIC_BITMODE16 0
230 #define SONIC_BITMODE32 1
231 #define SONIC_BUS_SCALE(bitmode) ((bitmode) ? 4 : 2)
232 /* Note! These are all measured in bus-size units, so use SONIC_BUS_SCALE */
233 #define SIZEOF_SONIC_RR 4
234 #define SONIC_RR_BUFADR_L 0
235 #define SONIC_RR_BUFADR_H 1
236 #define SONIC_RR_BUFSIZE_L 2
237 #define SONIC_RR_BUFSIZE_H 3
239 #define SIZEOF_SONIC_RD 7
240 #define SONIC_RD_STATUS 0
241 #define SONIC_RD_PKTLEN 1
242 #define SONIC_RD_PKTPTR_L 2
243 #define SONIC_RD_PKTPTR_H 3
244 #define SONIC_RD_SEQNO 4
245 #define SONIC_RD_LINK 5
246 #define SONIC_RD_IN_USE 6
248 #define SIZEOF_SONIC_TD 8
249 #define SONIC_TD_STATUS 0
250 #define SONIC_TD_CONFIG 1
251 #define SONIC_TD_PKTSIZE 2
252 #define SONIC_TD_FRAG_COUNT 3
253 #define SONIC_TD_FRAG_PTR_L 4
254 #define SONIC_TD_FRAG_PTR_H 5
255 #define SONIC_TD_FRAG_SIZE 6
256 #define SONIC_TD_LINK 7
258 #define SIZEOF_SONIC_CD 4
259 #define SONIC_CD_ENTRY_POINTER 0
260 #define SONIC_CD_CAP0 1
261 #define SONIC_CD_CAP1 2
262 #define SONIC_CD_CAP2 3
264 #define SIZEOF_SONIC_CDA ((CAM_DESCRIPTORS * SIZEOF_SONIC_CD) + 1)
265 #define SONIC_CDA_CAM_ENABLE (CAM_DESCRIPTORS * SIZEOF_SONIC_CD)
268 * Some tunables for the buffer areas. Power of 2 is required
269 * the current driver uses one receive buffer for each descriptor.
271 * MSch: use more buffer space for the slow m68k Macs!
273 #define SONIC_NUM_RRS 16 /* number of receive resources */
274 #define SONIC_NUM_RDS SONIC_NUM_RRS /* number of receive descriptors */
275 #define SONIC_NUM_TDS 16 /* number of transmit descriptors */
277 #define SONIC_RDS_MASK (SONIC_NUM_RDS-1)
278 #define SONIC_TDS_MASK (SONIC_NUM_TDS-1)
280 #define SONIC_RBSIZE 1520 /* size of one resource buffer */
282 /* Again, measured in bus size units! */
283 #define SIZEOF_SONIC_DESC (SIZEOF_SONIC_CDA \
284 + (SIZEOF_SONIC_TD * SONIC_NUM_TDS) \
285 + (SIZEOF_SONIC_RD * SONIC_NUM_RDS) \
286 + (SIZEOF_SONIC_RR * SONIC_NUM_RRS))
288 /* Information that need to be kept for each board. */
290 /* Bus size. 0 == 16 bits, 1 == 32 bits. */
292 /* Register offset within the longword (independent of endianness,
293 and varies from one type of Macintosh SONIC to another
297 /* Crud. These areas have to be within the same 64K. Therefore
298 we allocate a desriptors page, and point these to places within it. */
299 void *cda; /* CAM descriptor area */
300 void *tda; /* Transmit descriptor area */
301 void *rra; /* Receive resource area */
302 void *rda; /* Receive descriptor area */
303 struct sk_buff* volatile rx_skb[SONIC_NUM_RRS]; /* packets to be received */
304 struct sk_buff* volatile tx_skb[SONIC_NUM_TDS]; /* packets to be transmitted */
305 unsigned int tx_len[SONIC_NUM_TDS]; /* lengths of tx DMA mappings */
306 /* Logical DMA addresses on MIPS, bus addresses on m68k
307 * (so "laddr" is a bit misleading) */
308 dma_addr_t descriptors_laddr;
309 u32 cda_laddr; /* logical DMA address of CDA */
310 u32 tda_laddr; /* logical DMA address of TDA */
311 u32 rra_laddr; /* logical DMA address of RRA */
312 u32 rda_laddr; /* logical DMA address of RDA */
313 dma_addr_t rx_laddr[SONIC_NUM_RRS]; /* logical DMA addresses of rx skbuffs */
314 dma_addr_t tx_laddr[SONIC_NUM_TDS]; /* logical DMA addresses of tx skbuffs */
315 unsigned int rra_end;
316 unsigned int cur_rwp;
318 unsigned int cur_tx; /* first unacked transmit packet */
320 unsigned int eol_tx; /* last unacked transmit packet */
321 unsigned int next_tx; /* next free TD */
322 struct device *device; /* generic device */
323 struct net_device_stats stats;
326 #define TX_TIMEOUT (3 * HZ)
328 /* Index to functions, as function prototypes. */
330 static int sonic_open(struct net_device *dev);
331 static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev);
332 static irqreturn_t sonic_interrupt(int irq, void *dev_id, struct pt_regs *regs);
333 static void sonic_rx(struct net_device *dev);
334 static int sonic_close(struct net_device *dev);
335 static struct net_device_stats *sonic_get_stats(struct net_device *dev);
336 static void sonic_multicast_list(struct net_device *dev);
337 static int sonic_init(struct net_device *dev);
338 static void sonic_tx_timeout(struct net_device *dev);
340 /* Internal inlines for reading/writing DMA buffers. Note that bus
341 size and endianness matter here, whereas they don't for registers,
342 as far as we can tell. */
343 /* OpenBSD calls this "SWO". I'd like to think that sonic_buf_put()
344 is a much better name. */
345 static inline void sonic_buf_put(void* base, int bitmode,
346 int offset, __u16 val)
350 ((__u16 *) base + (offset*2))[1] = val;
352 ((__u16 *) base + (offset*2))[0] = val;
355 ((__u16 *) base)[offset] = val;
358 static inline __u16 sonic_buf_get(void* base, int bitmode,
363 return ((volatile __u16 *) base + (offset*2))[1];
365 return ((volatile __u16 *) base + (offset*2))[0];
368 return ((volatile __u16 *) base)[offset];
371 /* Inlines that you should actually use for reading/writing DMA buffers */
372 static inline void sonic_cda_put(struct net_device* dev, int entry,
373 int offset, __u16 val)
375 struct sonic_local* lp = (struct sonic_local *) dev->priv;
376 sonic_buf_put(lp->cda, lp->dma_bitmode,
377 (entry * SIZEOF_SONIC_CD) + offset, val);
380 static inline __u16 sonic_cda_get(struct net_device* dev, int entry,
383 struct sonic_local* lp = (struct sonic_local *) dev->priv;
384 return sonic_buf_get(lp->cda, lp->dma_bitmode,
385 (entry * SIZEOF_SONIC_CD) + offset);
388 static inline void sonic_set_cam_enable(struct net_device* dev, __u16 val)
390 struct sonic_local* lp = (struct sonic_local *) dev->priv;
391 sonic_buf_put(lp->cda, lp->dma_bitmode, SONIC_CDA_CAM_ENABLE, val);
394 static inline __u16 sonic_get_cam_enable(struct net_device* dev)
396 struct sonic_local* lp = (struct sonic_local *) dev->priv;
397 return sonic_buf_get(lp->cda, lp->dma_bitmode, SONIC_CDA_CAM_ENABLE);
400 static inline void sonic_tda_put(struct net_device* dev, int entry,
401 int offset, __u16 val)
403 struct sonic_local* lp = (struct sonic_local *) dev->priv;
404 sonic_buf_put(lp->tda, lp->dma_bitmode,
405 (entry * SIZEOF_SONIC_TD) + offset, val);
408 static inline __u16 sonic_tda_get(struct net_device* dev, int entry,
411 struct sonic_local* lp = (struct sonic_local *) dev->priv;
412 return sonic_buf_get(lp->tda, lp->dma_bitmode,
413 (entry * SIZEOF_SONIC_TD) + offset);
416 static inline void sonic_rda_put(struct net_device* dev, int entry,
417 int offset, __u16 val)
419 struct sonic_local* lp = (struct sonic_local *) dev->priv;
420 sonic_buf_put(lp->rda, lp->dma_bitmode,
421 (entry * SIZEOF_SONIC_RD) + offset, val);
424 static inline __u16 sonic_rda_get(struct net_device* dev, int entry,
427 struct sonic_local* lp = (struct sonic_local *) dev->priv;
428 return sonic_buf_get(lp->rda, lp->dma_bitmode,
429 (entry * SIZEOF_SONIC_RD) + offset);
432 static inline void sonic_rra_put(struct net_device* dev, int entry,
433 int offset, __u16 val)
435 struct sonic_local* lp = (struct sonic_local *) dev->priv;
436 sonic_buf_put(lp->rra, lp->dma_bitmode,
437 (entry * SIZEOF_SONIC_RR) + offset, val);
440 static inline __u16 sonic_rra_get(struct net_device* dev, int entry,
443 struct sonic_local* lp = (struct sonic_local *) dev->priv;
444 return sonic_buf_get(lp->rra, lp->dma_bitmode,
445 (entry * SIZEOF_SONIC_RR) + offset);
448 static const char *version =
449 "sonic.c:v0.92 20.9.98 tsbogend@alpha.franken.de\n";