1/* 2 * Header file for sonic.c 3 * 4 * (C) Waldorf Electronics, Germany 5 * Written by Andreas Busse 6 * 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. 11 * 12 * 981229 MSch: did just that for the 68k Mac port (32 bit, big endian) 13 * 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. 17 * 18 * 050625 Finn Thain: introduced more 32-bit cards and dhd's support 19 * for 16-bit cards (from the mac68k project). 20 */ 21 22#ifndef SONIC_H 23#define SONIC_H 24 25 26/* 27 * SONIC register offsets 28 */ 29 30#define SONIC_CMD 0x00 31#define SONIC_DCR 0x01 32#define SONIC_RCR 0x02 33#define SONIC_TCR 0x03 34#define SONIC_IMR 0x04 35#define SONIC_ISR 0x05 36 37#define SONIC_UTDA 0x06 38#define SONIC_CTDA 0x07 39 40#define SONIC_URDA 0x0d 41#define SONIC_CRDA 0x0e 42#define SONIC_EOBC 0x13 43#define SONIC_URRA 0x14 44#define SONIC_RSA 0x15 45#define SONIC_REA 0x16 46#define SONIC_RRP 0x17 47#define SONIC_RWP 0x18 48#define SONIC_RSC 0x2b 49 50#define SONIC_CEP 0x21 51#define SONIC_CAP2 0x22 52#define SONIC_CAP1 0x23 53#define SONIC_CAP0 0x24 54#define SONIC_CE 0x25 55#define SONIC_CDP 0x26 56#define SONIC_CDC 0x27 57 58#define SONIC_WT0 0x29 59#define SONIC_WT1 0x2a 60 61#define SONIC_SR 0x28 62 63 64/* test-only registers */ 65 66#define SONIC_TPS 0x08 67#define SONIC_TFC 0x09 68#define SONIC_TSA0 0x0a 69#define SONIC_TSA1 0x0b 70#define SONIC_TFS 0x0c 71 72#define SONIC_CRBA0 0x0f 73#define SONIC_CRBA1 0x10 74#define SONIC_RBWC0 0x11 75#define SONIC_RBWC1 0x12 76#define SONIC_TTDA 0x20 77#define SONIC_MDT 0x2f 78 79#define SONIC_TRBA0 0x19 80#define SONIC_TRBA1 0x1a 81#define SONIC_TBWC0 0x1b 82#define SONIC_TBWC1 0x1c 83#define SONIC_LLFA 0x1f 84 85#define SONIC_ADDR0 0x1d 86#define SONIC_ADDR1 0x1e 87 88/* 89 * Error counters 90 */ 91 92#define SONIC_CRCT 0x2c 93#define SONIC_FAET 0x2d 94#define SONIC_MPT 0x2e 95 96#define SONIC_DCR2 0x3f 97 98/* 99 * SONIC command bits 100 */ 101 102#define SONIC_CR_LCAM 0x0200 103#define SONIC_CR_RRRA 0x0100 104#define SONIC_CR_RST 0x0080 105#define SONIC_CR_ST 0x0020 106#define SONIC_CR_STP 0x0010 107#define SONIC_CR_RXEN 0x0008 108#define SONIC_CR_RXDIS 0x0004 109#define SONIC_CR_TXP 0x0002 110#define SONIC_CR_HTX 0x0001 111 112/* 113 * SONIC data configuration bits 114 */ 115 116#define SONIC_DCR_EXBUS 0x8000 117#define SONIC_DCR_LBR 0x2000 118#define SONIC_DCR_PO1 0x1000 119#define SONIC_DCR_PO0 0x0800 120#define SONIC_DCR_SBUS 0x0400 121#define SONIC_DCR_USR1 0x0200 122#define SONIC_DCR_USR0 0x0100 123#define SONIC_DCR_WC1 0x0080 124#define SONIC_DCR_WC0 0x0040 125#define SONIC_DCR_DW 0x0020 126#define SONIC_DCR_BMS 0x0010 127#define SONIC_DCR_RFT1 0x0008 128#define SONIC_DCR_RFT0 0x0004 129#define SONIC_DCR_TFT1 0x0002 130#define SONIC_DCR_TFT0 0x0001 131 132/* 133 * Constants for the SONIC receive control register. 134 */ 135 136#define SONIC_RCR_ERR 0x8000 137#define SONIC_RCR_RNT 0x4000 138#define SONIC_RCR_BRD 0x2000 139#define SONIC_RCR_PRO 0x1000 140#define SONIC_RCR_AMC 0x0800 141#define SONIC_RCR_LB1 0x0400 142#define SONIC_RCR_LB0 0x0200 143 144#define SONIC_RCR_MC 0x0100 145#define SONIC_RCR_BC 0x0080 146#define SONIC_RCR_LPKT 0x0040 147#define SONIC_RCR_CRS 0x0020 148#define SONIC_RCR_COL 0x0010 149#define SONIC_RCR_CRCR 0x0008 150#define SONIC_RCR_FAER 0x0004 151#define SONIC_RCR_LBK 0x0002 152#define SONIC_RCR_PRX 0x0001 153 154#define SONIC_RCR_LB_OFF 0 155#define SONIC_RCR_LB_MAC SONIC_RCR_LB0 156#define SONIC_RCR_LB_ENDEC SONIC_RCR_LB1 157#define SONIC_RCR_LB_TRANS (SONIC_RCR_LB0 | SONIC_RCR_LB1) 158 159/* default RCR setup */ 160 161#define SONIC_RCR_DEFAULT (SONIC_RCR_BRD) 162 163 164/* 165 * SONIC Transmit Control register bits 166 */ 167 168#define SONIC_TCR_PINTR 0x8000 169#define SONIC_TCR_POWC 0x4000 170#define SONIC_TCR_CRCI 0x2000 171#define SONIC_TCR_EXDIS 0x1000 172#define SONIC_TCR_EXD 0x0400 173#define SONIC_TCR_DEF 0x0200 174#define SONIC_TCR_NCRS 0x0100 175#define SONIC_TCR_CRLS 0x0080 176#define SONIC_TCR_EXC 0x0040 177#define SONIC_TCR_PMB 0x0008 178#define SONIC_TCR_FU 0x0004 179#define SONIC_TCR_BCM 0x0002 180#define SONIC_TCR_PTX 0x0001 181 182#define SONIC_TCR_DEFAULT 0x0000 183 184/* 185 * Constants for the SONIC_INTERRUPT_MASK and 186 * SONIC_INTERRUPT_STATUS registers. 187 */ 188 189#define SONIC_INT_BR 0x4000 190#define SONIC_INT_HBL 0x2000 191#define SONIC_INT_LCD 0x1000 192#define SONIC_INT_PINT 0x0800 193#define SONIC_INT_PKTRX 0x0400 194#define SONIC_INT_TXDN 0x0200 195#define SONIC_INT_TXER 0x0100 196#define SONIC_INT_TC 0x0080 197#define SONIC_INT_RDE 0x0040 198#define SONIC_INT_RBE 0x0020 199#define SONIC_INT_RBAE 0x0010 200#define SONIC_INT_CRC 0x0008 201#define SONIC_INT_FAE 0x0004 202#define SONIC_INT_MP 0x0002 203#define SONIC_INT_RFO 0x0001 204 205 206/* 207 * The interrupts we allow. 208 */ 209 210#define SONIC_IMR_DEFAULT ( SONIC_INT_BR | \ 211 SONIC_INT_LCD | \ 212 SONIC_INT_RFO | \ 213 SONIC_INT_PKTRX | \ 214 SONIC_INT_TXDN | \ 215 SONIC_INT_TXER | \ 216 SONIC_INT_RDE | \ 217 SONIC_INT_RBAE | \ 218 SONIC_INT_CRC | \ 219 SONIC_INT_FAE | \ 220 SONIC_INT_MP) 221 222 223#define SONIC_EOL 0x0001 224#define CAM_DESCRIPTORS 16 225 226/* Offsets in the various DMA buffers accessed by the SONIC */ 227 228#define SONIC_BITMODE16 0 229#define SONIC_BITMODE32 1 230#define SONIC_BUS_SCALE(bitmode) ((bitmode) ? 4 : 2) 231/* Note! These are all measured in bus-size units, so use SONIC_BUS_SCALE */ 232#define SIZEOF_SONIC_RR 4 233#define SONIC_RR_BUFADR_L 0 234#define SONIC_RR_BUFADR_H 1 235#define SONIC_RR_BUFSIZE_L 2 236#define SONIC_RR_BUFSIZE_H 3 237 238#define SIZEOF_SONIC_RD 7 239#define SONIC_RD_STATUS 0 240#define SONIC_RD_PKTLEN 1 241#define SONIC_RD_PKTPTR_L 2 242#define SONIC_RD_PKTPTR_H 3 243#define SONIC_RD_SEQNO 4 244#define SONIC_RD_LINK 5 245#define SONIC_RD_IN_USE 6 246 247#define SIZEOF_SONIC_TD 8 248#define SONIC_TD_STATUS 0 249#define SONIC_TD_CONFIG 1 250#define SONIC_TD_PKTSIZE 2 251#define SONIC_TD_FRAG_COUNT 3 252#define SONIC_TD_FRAG_PTR_L 4 253#define SONIC_TD_FRAG_PTR_H 5 254#define SONIC_TD_FRAG_SIZE 6 255#define SONIC_TD_LINK 7 256 257#define SIZEOF_SONIC_CD 4 258#define SONIC_CD_ENTRY_POINTER 0 259#define SONIC_CD_CAP0 1 260#define SONIC_CD_CAP1 2 261#define SONIC_CD_CAP2 3 262 263#define SIZEOF_SONIC_CDA ((CAM_DESCRIPTORS * SIZEOF_SONIC_CD) + 1) 264#define SONIC_CDA_CAM_ENABLE (CAM_DESCRIPTORS * SIZEOF_SONIC_CD) 265 266/* 267 * Some tunables for the buffer areas. Power of 2 is required 268 * the current driver uses one receive buffer for each descriptor. 269 * 270 * MSch: use more buffer space for the slow m68k Macs! 271 */ 272#define SONIC_NUM_RRS 16 /* number of receive resources */ 273#define SONIC_NUM_RDS SONIC_NUM_RRS /* number of receive descriptors */ 274#define SONIC_NUM_TDS 16 /* number of transmit descriptors */ 275 276#define SONIC_RDS_MASK (SONIC_NUM_RDS-1) 277#define SONIC_TDS_MASK (SONIC_NUM_TDS-1) 278 279#define SONIC_RBSIZE 1520 /* size of one resource buffer */ 280 281/* Again, measured in bus size units! */ 282#define SIZEOF_SONIC_DESC (SIZEOF_SONIC_CDA \ 283 + (SIZEOF_SONIC_TD * SONIC_NUM_TDS) \ 284 + (SIZEOF_SONIC_RD * SONIC_NUM_RDS) \ 285 + (SIZEOF_SONIC_RR * SONIC_NUM_RRS)) 286 287/* Information that need to be kept for each board. */ 288struct sonic_local { 289 /* Bus size. 0 == 16 bits, 1 == 32 bits. */ 290 int dma_bitmode; 291 /* Register offset within the longword (independent of endianness, 292 and varies from one type of Macintosh SONIC to another 293 (Aarrgh)) */ 294 int reg_offset; 295 void *descriptors; 296 /* Crud. These areas have to be within the same 64K. Therefore 297 we allocate a desriptors page, and point these to places within it. */ 298 void *cda; /* CAM descriptor area */ 299 void *tda; /* Transmit descriptor area */ 300 void *rra; /* Receive resource area */ 301 void *rda; /* Receive descriptor area */ 302 struct sk_buff* volatile rx_skb[SONIC_NUM_RRS]; /* packets to be received */ 303 struct sk_buff* volatile tx_skb[SONIC_NUM_TDS]; /* packets to be transmitted */ 304 unsigned int tx_len[SONIC_NUM_TDS]; /* lengths of tx DMA mappings */ 305 /* Logical DMA addresses on MIPS, bus addresses on m68k 306 * (so "laddr" is a bit misleading) */ 307 dma_addr_t descriptors_laddr; 308 u32 cda_laddr; /* logical DMA address of CDA */ 309 u32 tda_laddr; /* logical DMA address of TDA */ 310 u32 rra_laddr; /* logical DMA address of RRA */ 311 u32 rda_laddr; /* logical DMA address of RDA */ 312 dma_addr_t rx_laddr[SONIC_NUM_RRS]; /* logical DMA addresses of rx skbuffs */ 313 dma_addr_t tx_laddr[SONIC_NUM_TDS]; /* logical DMA addresses of tx skbuffs */ 314 unsigned int rra_end; 315 unsigned int cur_rwp; 316 unsigned int cur_rx; 317 unsigned int cur_tx; /* first unacked transmit packet */ 318 unsigned int eol_rx; 319 unsigned int eol_tx; /* last unacked transmit packet */ 320 unsigned int next_tx; /* next free TD */ 321 struct device *device; /* generic device */ 322 struct net_device_stats stats; 323}; 324 325#define TX_TIMEOUT (3 * HZ) 326 327/* Index to functions, as function prototypes. */ 328 329static int sonic_open(struct net_device *dev); 330static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev); 331static irqreturn_t sonic_interrupt(int irq, void *dev_id); 332static void sonic_rx(struct net_device *dev); 333static int sonic_close(struct net_device *dev); 334static struct net_device_stats *sonic_get_stats(struct net_device *dev); 335static void sonic_multicast_list(struct net_device *dev); 336static int sonic_init(struct net_device *dev); 337static void sonic_tx_timeout(struct net_device *dev); 338 339/* Internal inlines for reading/writing DMA buffers. Note that bus 340 size and endianness matter here, whereas they don't for registers, 341 as far as we can tell. */ 342/* OpenBSD calls this "SWO". I'd like to think that sonic_buf_put() 343 is a much better name. */ 344static inline void sonic_buf_put(void* base, int bitmode, 345 int offset, __u16 val) 346{ 347 if (bitmode) 348#ifdef __BIG_ENDIAN 349 ((__u16 *) base + (offset*2))[1] = val; 350#else 351 ((__u16 *) base + (offset*2))[0] = val; 352#endif 353 else 354 ((__u16 *) base)[offset] = val; 355} 356 357static inline __u16 sonic_buf_get(void* base, int bitmode, 358 int offset) 359{ 360 if (bitmode) 361#ifdef __BIG_ENDIAN 362 return ((volatile __u16 *) base + (offset*2))[1]; 363#else 364 return ((volatile __u16 *) base + (offset*2))[0]; 365#endif 366 else 367 return ((volatile __u16 *) base)[offset]; 368} 369 370/* Inlines that you should actually use for reading/writing DMA buffers */ 371static inline void sonic_cda_put(struct net_device* dev, int entry, 372 int offset, __u16 val) 373{ 374 struct sonic_local *lp = netdev_priv(dev); 375 sonic_buf_put(lp->cda, lp->dma_bitmode, 376 (entry * SIZEOF_SONIC_CD) + offset, val); 377} 378 379static inline __u16 sonic_cda_get(struct net_device* dev, int entry, 380 int offset) 381{ 382 struct sonic_local *lp = netdev_priv(dev); 383 return sonic_buf_get(lp->cda, lp->dma_bitmode, 384 (entry * SIZEOF_SONIC_CD) + offset); 385} 386 387static inline void sonic_set_cam_enable(struct net_device* dev, __u16 val) 388{ 389 struct sonic_local *lp = netdev_priv(dev); 390 sonic_buf_put(lp->cda, lp->dma_bitmode, SONIC_CDA_CAM_ENABLE, val); 391} 392 393static inline __u16 sonic_get_cam_enable(struct net_device* dev) 394{ 395 struct sonic_local *lp = netdev_priv(dev); 396 return sonic_buf_get(lp->cda, lp->dma_bitmode, SONIC_CDA_CAM_ENABLE); 397} 398 399static inline void sonic_tda_put(struct net_device* dev, int entry, 400 int offset, __u16 val) 401{ 402 struct sonic_local *lp = netdev_priv(dev); 403 sonic_buf_put(lp->tda, lp->dma_bitmode, 404 (entry * SIZEOF_SONIC_TD) + offset, val); 405} 406 407static inline __u16 sonic_tda_get(struct net_device* dev, int entry, 408 int offset) 409{ 410 struct sonic_local *lp = netdev_priv(dev); 411 return sonic_buf_get(lp->tda, lp->dma_bitmode, 412 (entry * SIZEOF_SONIC_TD) + offset); 413} 414 415static inline void sonic_rda_put(struct net_device* dev, int entry, 416 int offset, __u16 val) 417{ 418 struct sonic_local *lp = netdev_priv(dev); 419 sonic_buf_put(lp->rda, lp->dma_bitmode, 420 (entry * SIZEOF_SONIC_RD) + offset, val); 421} 422 423static inline __u16 sonic_rda_get(struct net_device* dev, int entry, 424 int offset) 425{ 426 struct sonic_local *lp = netdev_priv(dev); 427 return sonic_buf_get(lp->rda, lp->dma_bitmode, 428 (entry * SIZEOF_SONIC_RD) + offset); 429} 430 431static inline void sonic_rra_put(struct net_device* dev, int entry, 432 int offset, __u16 val) 433{ 434 struct sonic_local *lp = netdev_priv(dev); 435 sonic_buf_put(lp->rra, lp->dma_bitmode, 436 (entry * SIZEOF_SONIC_RR) + offset, val); 437} 438 439static inline __u16 sonic_rra_get(struct net_device* dev, int entry, 440 int offset) 441{ 442 struct sonic_local *lp = netdev_priv(dev); 443 return sonic_buf_get(lp->rra, lp->dma_bitmode, 444 (entry * SIZEOF_SONIC_RR) + offset); 445} 446 447static const char *version = 448 "sonic.c:v0.92 20.9.98 tsbogend@alpha.franken.de\n"; 449 450#endif /* SONIC_H */ 451