1 /* SuperH Ethernet device driver
3 * Copyright (C) 2006-2012 Nobuhiro Iwamatsu
4 * Copyright (C) 2008-2012 Renesas Solutions Corp.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * The full GNU General Public License is included in this distribution in
16 * the file called "COPYING".
22 #define CARDNAME "sh-eth"
23 #define TX_TIMEOUT (5*HZ)
24 #define TX_RING_SIZE 64 /* Tx ring size */
25 #define RX_RING_SIZE 64 /* Rx ring size */
26 #define TX_RING_MIN 64
27 #define RX_RING_MIN 64
28 #define TX_RING_MAX 1024
29 #define RX_RING_MAX 1024
30 #define PKT_BUF_SZ 1538
31 #define SH_ETH_TSU_TIMEOUT_MS 500
32 #define SH_ETH_TSU_CAM_ENTRIES 32
35 /* IMPORTANT: To keep ethtool register dump working, add new
36 * register names immediately before SH_ETH_MAX_REGISTER_OFFSET.
39 /* E-DMAC registers */
108 /* TSU Absolute address */
138 /* TSU_ADR{H,L}{0..31} are assumed to be contiguous */
153 /* This value must be written at last. */
154 SH_ETH_MAX_REGISTER_OFFSET,
160 SH_ETH_REG_FAST_RCAR,
162 SH_ETH_REG_FAST_SH3_SH2
165 /* Driver's parameters */
166 #if defined(CONFIG_CPU_SH4) || defined(CONFIG_ARCH_SHMOBILE)
167 #define SH_ETH_RX_ALIGN 32
169 #define SH_ETH_RX_ALIGN 2
174 /* EDSR : sh7734, sh7757, sh7763, r8a7740, and r7s72100 only */
176 EDSR_ENT = 0x01, EDSR_ENR = 0x02,
178 #define EDSR_ENALL (EDSR_ENT|EDSR_ENR)
180 /* GECMR : sh7734, sh7763 and r8a7740 only */
182 GECMR_10 = 0x0, GECMR_100 = 0x04, GECMR_1000 = 0x01,
187 EDMR_EL = 0x40, /* Litte endian */
188 EDMR_DL1 = 0x20, EDMR_DL0 = 0x10,
189 EDMR_SRST_GETHER = 0x03,
190 EDMR_SRST_ETHER = 0x01,
195 EDTRR_TRNS_GETHER = 0x03,
196 EDTRR_TRNS_ETHER = 0x01,
206 TPAUSER_TPAUSE = 0x0000ffff,
207 TPAUSER_UNLIMITED = 0,
212 BCFR_RPAUSE = 0x0000ffff,
218 PIR_MDI = 0x08, PIR_MDO = 0x04, PIR_MMD = 0x02, PIR_MDC = 0x01,
222 enum PHY_STATUS_BIT { PHY_ST_LINK = 0x01, };
226 EESR_TWB1 = 0x80000000,
227 EESR_TWB = 0x40000000, /* same as TWB0 */
228 EESR_TC1 = 0x20000000,
229 EESR_TUC = 0x10000000,
230 EESR_ROC = 0x08000000,
231 EESR_TABT = 0x04000000,
232 EESR_RABT = 0x02000000,
233 EESR_RFRMER = 0x01000000, /* same as RFCOF */
234 EESR_ADE = 0x00800000,
235 EESR_ECI = 0x00400000,
236 EESR_FTC = 0x00200000, /* same as TC or TC0 */
237 EESR_TDE = 0x00100000,
238 EESR_TFE = 0x00080000, /* same as TFUF */
239 EESR_FRC = 0x00040000, /* same as FR */
240 EESR_RDE = 0x00020000,
241 EESR_RFE = 0x00010000,
242 EESR_CND = 0x00000800,
243 EESR_DLC = 0x00000400,
244 EESR_CD = 0x00000200,
245 EESR_RTO = 0x00000100,
246 EESR_RMAF = 0x00000080,
247 EESR_CEEF = 0x00000040,
248 EESR_CELF = 0x00000020,
249 EESR_RRF = 0x00000010,
250 EESR_RTLF = 0x00000008,
251 EESR_RTSF = 0x00000004,
252 EESR_PRE = 0x00000002,
253 EESR_CERF = 0x00000001,
256 #define EESR_RX_CHECK (EESR_FRC | /* Frame recv */ \
257 EESR_RMAF | /* Multicast address recv */ \
258 EESR_RRF | /* Bit frame recv */ \
259 EESR_RTLF | /* Long frame recv */ \
260 EESR_RTSF | /* Short frame recv */ \
261 EESR_PRE | /* PHY-LSI recv error */ \
262 EESR_CERF) /* Recv frame CRC error */
264 #define DEFAULT_TX_CHECK (EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | \
266 #define DEFAULT_EESR_ERR_CHECK (EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE | \
267 EESR_RDE | EESR_RFRMER | EESR_ADE | \
272 EESIPR_TWB1IP = 0x80000000,
273 EESIPR_TWBIP = 0x40000000, /* same as TWB0IP */
274 EESIPR_TC1IP = 0x20000000,
275 EESIPR_TUCIP = 0x10000000,
276 EESIPR_ROCIP = 0x08000000,
277 EESIPR_TABTIP = 0x04000000,
278 EESIPR_RABTIP = 0x02000000,
279 EESIPR_RFCOFIP = 0x01000000,
280 EESIPR_ADEIP = 0x00800000,
281 EESIPR_ECIIP = 0x00400000,
282 EESIPR_FTCIP = 0x00200000, /* same as TC0IP */
283 EESIPR_TDEIP = 0x00100000,
284 EESIPR_TFUFIP = 0x00080000,
285 EESIPR_FRIP = 0x00040000,
286 EESIPR_RDEIP = 0x00020000,
287 EESIPR_RFOFIP = 0x00010000,
288 EESIPR_CNDIP = 0x00000800,
289 EESIPR_DLCIP = 0x00000400,
290 EESIPR_CDIP = 0x00000200,
291 EESIPR_TROIP = 0x00000100,
292 EESIPR_RMAFIP = 0x00000080,
293 EESIPR_CEEFIP = 0x00000040,
294 EESIPR_CELFIP = 0x00000020,
295 EESIPR_RRFIP = 0x00000010,
296 EESIPR_RTLFIP = 0x00000008,
297 EESIPR_RTSFIP = 0x00000004,
298 EESIPR_PREIP = 0x00000002,
299 EESIPR_CERFIP = 0x00000001,
302 /* Receive descriptor 0 bits */
304 RD_RACT = 0x80000000, RD_RDLE = 0x40000000,
305 RD_RFP1 = 0x20000000, RD_RFP0 = 0x10000000,
306 RD_RFE = 0x08000000, RD_RFS10 = 0x00000200,
307 RD_RFS9 = 0x00000100, RD_RFS8 = 0x00000080,
308 RD_RFS7 = 0x00000040, RD_RFS6 = 0x00000020,
309 RD_RFS5 = 0x00000010, RD_RFS4 = 0x00000008,
310 RD_RFS3 = 0x00000004, RD_RFS2 = 0x00000002,
311 RD_RFS1 = 0x00000001,
313 #define RDF1ST RD_RFP1
314 #define RDFEND RD_RFP0
315 #define RD_RFP (RD_RFP1|RD_RFP0)
317 /* Receive descriptor 1 bits */
319 RD_RFL = 0x0000ffff, /* receive frame length */
320 RD_RBL = 0xffff0000, /* receive buffer length */
325 FCFTR_RFF2 = 0x00040000, FCFTR_RFF1 = 0x00020000,
326 FCFTR_RFF0 = 0x00010000, FCFTR_RFD2 = 0x00000004,
327 FCFTR_RFD1 = 0x00000002, FCFTR_RFD0 = 0x00000001,
329 #define DEFAULT_FIFO_F_D_RFF (FCFTR_RFF2 | FCFTR_RFF1 | FCFTR_RFF0)
330 #define DEFAULT_FIFO_F_D_RFD (FCFTR_RFD2 | FCFTR_RFD1 | FCFTR_RFD0)
332 /* Transmit descriptor 0 bits */
334 TD_TACT = 0x80000000, TD_TDLE = 0x40000000,
335 TD_TFP1 = 0x20000000, TD_TFP0 = 0x10000000,
336 TD_TFE = 0x08000000, TD_TWBI = 0x04000000,
338 #define TDF1ST TD_TFP1
339 #define TDFEND TD_TFP0
340 #define TD_TFP (TD_TFP1|TD_TFP0)
342 /* Transmit descriptor 1 bits */
344 TD_TBL = 0xffff0000, /* transmit buffer length */
349 RMCR_RNC = 0x00000001,
353 enum FELIC_MODE_BIT {
354 ECMR_TRCCM = 0x04000000, ECMR_RCSC = 0x00800000,
355 ECMR_DPAD = 0x00200000, ECMR_RZPF = 0x00100000,
356 ECMR_ZPF = 0x00080000, ECMR_PFR = 0x00040000, ECMR_RXF = 0x00020000,
357 ECMR_TXF = 0x00010000, ECMR_MCT = 0x00002000, ECMR_PRCEF = 0x00001000,
358 ECMR_MPDE = 0x00000200, ECMR_RE = 0x00000040, ECMR_TE = 0x00000020,
359 ECMR_RTM = 0x00000010, ECMR_ILB = 0x00000008, ECMR_ELB = 0x00000004,
360 ECMR_DM = 0x00000002, ECMR_PRM = 0x00000001,
364 enum ECSR_STATUS_BIT {
365 ECSR_BRCRX = 0x20, ECSR_PSRTO = 0x10,
367 ECSR_MPD = 0x02, ECSR_ICD = 0x01,
370 #define DEFAULT_ECSR_INIT (ECSR_BRCRX | ECSR_PSRTO | ECSR_LCHNG | \
371 ECSR_ICD | ECSIPR_MPDIP)
374 enum ECSIPR_STATUS_MASK_BIT {
375 ECSIPR_BRCRXIP = 0x20, ECSIPR_PSRTOIP = 0x10,
376 ECSIPR_LCHNGIP = 0x04,
377 ECSIPR_MPDIP = 0x02, ECSIPR_ICDIP = 0x01,
380 #define DEFAULT_ECSIPR_INIT (ECSIPR_BRCRXIP | ECSIPR_PSRTOIP | \
381 ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP)
395 DESC_I_TINT4 = 0x0800, DESC_I_TINT3 = 0x0400, DESC_I_TINT2 = 0x0200,
396 DESC_I_TINT1 = 0x0100, DESC_I_RINT8 = 0x0080, DESC_I_RINT5 = 0x0010,
397 DESC_I_RINT4 = 0x0008, DESC_I_RINT3 = 0x0004, DESC_I_RINT2 = 0x0002,
398 DESC_I_RINT1 = 0x0001,
401 #define DEFAULT_TRSCER_ERR_MASK (DESC_I_RINT8 | DESC_I_RINT5 | DESC_I_TINT2)
405 RPADIR_PADS1 = 0x20000, RPADIR_PADS0 = 0x10000,
406 RPADIR_PADR = 0x0003f,
410 #define DEFAULT_FDR_INIT 0x00000707
413 enum ARSTR_BIT { ARSTR_ARST = 0x00000001, };
417 TSU_FWEN0_0 = 0x00000001,
421 enum TSU_ADSBSY_BIT {
422 TSU_ADSBSY_0 = 0x00000001,
427 TSU_TEN_0 = 0x80000000,
432 TSU_FWSL0_FW50 = 0x1000, TSU_FWSL0_FW40 = 0x0800,
433 TSU_FWSL0_FW30 = 0x0400, TSU_FWSL0_FW20 = 0x0200,
434 TSU_FWSL0_FW10 = 0x0100, TSU_FWSL0_RMSA0 = 0x0010,
439 TSU_FWSLC_POSTENU = 0x2000, TSU_FWSLC_POSTENL = 0x1000,
440 TSU_FWSLC_CAMSEL03 = 0x0080, TSU_FWSLC_CAMSEL02 = 0x0040,
441 TSU_FWSLC_CAMSEL01 = 0x0020, TSU_FWSLC_CAMSEL00 = 0x0010,
442 TSU_FWSLC_CAMSEL13 = 0x0008, TSU_FWSLC_CAMSEL12 = 0x0004,
443 TSU_FWSLC_CAMSEL11 = 0x0002, TSU_FWSLC_CAMSEL10 = 0x0001,
447 #define TSU_VTAG_ENABLE 0x80000000
448 #define TSU_VTAG_VID_MASK 0x00000fff
450 /* The sh ether Tx buffer descriptors.
451 * This structure should be 20 bytes.
453 struct sh_eth_txdesc {
454 u32 status; /* TD0 */
457 u32 pad0; /* padding data */
458 } __aligned(2) __packed;
460 /* The sh ether Rx buffer descriptors.
461 * This structure should be 20 bytes.
463 struct sh_eth_rxdesc {
464 u32 status; /* RD0 */
467 u32 pad0; /* padding data */
468 } __aligned(2) __packed;
470 /* This structure is used by each CPU dependency handling. */
471 struct sh_eth_cpu_data {
472 /* optional functions */
473 void (*chip_reset)(struct net_device *ndev);
474 void (*set_duplex)(struct net_device *ndev);
475 void (*set_rate)(struct net_device *ndev);
477 /* mandatory initialize value */
481 /* optional initialize value */
488 /* interrupt checking mask */
495 /* hardware features */
496 unsigned long irq_flags; /* IRQ configuration flags */
497 unsigned no_psr:1; /* EtherC DO NOT have PSR */
498 unsigned apr:1; /* EtherC have APR */
499 unsigned mpr:1; /* EtherC have MPR */
500 unsigned tpauser:1; /* EtherC have TPAUSER */
501 unsigned bculr:1; /* EtherC have BCULR */
502 unsigned tsu:1; /* EtherC have TSU */
503 unsigned hw_swap:1; /* E-DMAC have DE bit in EDMR */
504 unsigned rpadir:1; /* E-DMAC have RPADIR */
505 unsigned no_trimd:1; /* E-DMAC DO NOT have TRIMD */
506 unsigned no_ade:1; /* E-DMAC DO NOT have ADE bit in EESR */
507 unsigned hw_checksum:1; /* E-DMAC has CSMR */
508 unsigned select_mii:1; /* EtherC have RMII_MII (MII select register) */
509 unsigned rmiimode:1; /* EtherC has RMIIMODE register */
510 unsigned rtrate:1; /* EtherC has RTRATE register */
511 unsigned magic:1; /* EtherC has ECMR.MPDE and ECSR.MPD */
512 unsigned dual_port:1; /* Dual EtherC/E-DMAC */
515 struct sh_eth_private {
516 struct platform_device *pdev;
517 struct sh_eth_cpu_data *cd;
518 const u16 *reg_offset;
520 void __iomem *tsu_addr;
524 dma_addr_t rx_desc_dma;
525 dma_addr_t tx_desc_dma;
526 struct sh_eth_rxdesc *rx_ring;
527 struct sh_eth_txdesc *tx_ring;
528 struct sk_buff **rx_skbuff;
529 struct sk_buff **tx_skbuff;
530 spinlock_t lock; /* Register access lock */
531 u32 cur_rx, dirty_rx; /* Producer/consumer ring indices */
532 u32 cur_tx, dirty_tx;
533 u32 rx_buf_sz; /* Based on MTU+slack. */
534 struct napi_struct napi;
536 /* MII transceiver section. */
537 u32 phy_id; /* PHY ID */
538 struct mii_bus *mii_bus; /* MDIO bus control */
540 phy_interface_t phy_interface;
544 int port; /* for TSU */
545 int vlan_num_ids; /* for VLAN tag filter */
547 unsigned no_ether_link:1;
548 unsigned ether_link_active_low:1;
549 unsigned is_opened:1;
550 unsigned wol_enabled:1;
553 static inline void sh_eth_soft_swap(char *src, int len)
555 #ifdef __LITTLE_ENDIAN__
558 maxp = p + ((len + sizeof(u32) - 1) / sizeof(u32));
560 for (; p < maxp; p++)
565 static inline void *sh_eth_tsu_get_offset(struct sh_eth_private *mdp,
568 return mdp->tsu_addr + mdp->reg_offset[enum_index];
571 static inline void sh_eth_tsu_write(struct sh_eth_private *mdp, u32 data,
574 iowrite32(data, mdp->tsu_addr + mdp->reg_offset[enum_index]);
577 static inline u32 sh_eth_tsu_read(struct sh_eth_private *mdp, int enum_index)
579 return ioread32(mdp->tsu_addr + mdp->reg_offset[enum_index]);
582 #endif /* #ifndef __SH_ETH_H__ */