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 /* E-DMAC registers */
104 /* TSU Absolute address */
151 /* This value must be written at last. */
152 SH_ETH_MAX_REGISTER_OFFSET,
158 SH_ETH_REG_FAST_RCAR,
160 SH_ETH_REG_FAST_SH3_SH2
163 /* Driver's parameters */
164 #if defined(CONFIG_CPU_SH4) || defined(CONFIG_ARCH_SHMOBILE)
165 #define SH4_SKB_RX_ALIGN 32
167 #define SH2_SH3_SKB_RX_ALIGN 2
172 /* EDSR : sh7734, sh7757, sh7763, r8a7740, and r7s72100 only */
174 EDSR_ENT = 0x01, EDSR_ENR = 0x02,
176 #define EDSR_ENALL (EDSR_ENT|EDSR_ENR)
178 /* GECMR : sh7734, sh7763 and r8a7740 only */
180 GECMR_10 = 0x0, GECMR_100 = 0x04, GECMR_1000 = 0x01,
185 EDMR_EL = 0x40, /* Litte endian */
186 EDMR_DL1 = 0x20, EDMR_DL0 = 0x10,
187 EDMR_SRST_GETHER = 0x03,
188 EDMR_SRST_ETHER = 0x01,
193 EDTRR_TRNS_GETHER = 0x03,
194 EDTRR_TRNS_ETHER = 0x01,
204 TPAUSER_TPAUSE = 0x0000ffff,
205 TPAUSER_UNLIMITED = 0,
210 BCFR_RPAUSE = 0x0000ffff,
216 PIR_MDI = 0x08, PIR_MDO = 0x04, PIR_MMD = 0x02, PIR_MDC = 0x01,
220 enum PHY_STATUS_BIT { PHY_ST_LINK = 0x01, };
224 EESR_TWB1 = 0x80000000,
225 EESR_TWB = 0x40000000, /* same as TWB0 */
226 EESR_TC1 = 0x20000000,
227 EESR_TUC = 0x10000000,
228 EESR_ROC = 0x08000000,
229 EESR_TABT = 0x04000000,
230 EESR_RABT = 0x02000000,
231 EESR_RFRMER = 0x01000000, /* same as RFCOF */
232 EESR_ADE = 0x00800000,
233 EESR_ECI = 0x00400000,
234 EESR_FTC = 0x00200000, /* same as TC or TC0 */
235 EESR_TDE = 0x00100000,
236 EESR_TFE = 0x00080000, /* same as TFUF */
237 EESR_FRC = 0x00040000, /* same as FR */
238 EESR_RDE = 0x00020000,
239 EESR_RFE = 0x00010000,
240 EESR_CND = 0x00000800,
241 EESR_DLC = 0x00000400,
242 EESR_CD = 0x00000200,
243 EESR_RTO = 0x00000100,
244 EESR_RMAF = 0x00000080,
245 EESR_CEEF = 0x00000040,
246 EESR_CELF = 0x00000020,
247 EESR_RRF = 0x00000010,
248 EESR_RTLF = 0x00000008,
249 EESR_RTSF = 0x00000004,
250 EESR_PRE = 0x00000002,
251 EESR_CERF = 0x00000001,
254 #define EESR_RX_CHECK (EESR_FRC | /* Frame recv */ \
255 EESR_RMAF | /* Multicast address recv */ \
256 EESR_RRF | /* Bit frame recv */ \
257 EESR_RTLF | /* Long frame recv */ \
258 EESR_RTSF | /* Short frame recv */ \
259 EESR_PRE | /* PHY-LSI recv error */ \
260 EESR_CERF) /* Recv frame CRC error */
262 #define DEFAULT_TX_CHECK (EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | \
264 #define DEFAULT_EESR_ERR_CHECK (EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE | \
265 EESR_RDE | EESR_RFRMER | EESR_ADE | \
266 EESR_TFE | EESR_TDE | EESR_ECI)
270 DMAC_M_TWB = 0x40000000, DMAC_M_TABT = 0x04000000,
271 DMAC_M_RABT = 0x02000000,
272 DMAC_M_RFRMER = 0x01000000, DMAC_M_ADF = 0x00800000,
273 DMAC_M_ECI = 0x00400000, DMAC_M_FTC = 0x00200000,
274 DMAC_M_TDE = 0x00100000, DMAC_M_TFE = 0x00080000,
275 DMAC_M_FRC = 0x00040000, DMAC_M_RDE = 0x00020000,
276 DMAC_M_RFE = 0x00010000, DMAC_M_TINT4 = 0x00000800,
277 DMAC_M_TINT3 = 0x00000400, DMAC_M_TINT2 = 0x00000200,
278 DMAC_M_TINT1 = 0x00000100, DMAC_M_RINT8 = 0x00000080,
279 DMAC_M_RINT5 = 0x00000010, DMAC_M_RINT4 = 0x00000008,
280 DMAC_M_RINT3 = 0x00000004, DMAC_M_RINT2 = 0x00000002,
281 DMAC_M_RINT1 = 0x00000001,
284 /* Receive descriptor bit */
286 RD_RACT = 0x80000000, RD_RDEL = 0x40000000,
287 RD_RFP1 = 0x20000000, RD_RFP0 = 0x10000000,
288 RD_RFE = 0x08000000, RD_RFS10 = 0x00000200,
289 RD_RFS9 = 0x00000100, RD_RFS8 = 0x00000080,
290 RD_RFS7 = 0x00000040, RD_RFS6 = 0x00000020,
291 RD_RFS5 = 0x00000010, RD_RFS4 = 0x00000008,
292 RD_RFS3 = 0x00000004, RD_RFS2 = 0x00000002,
293 RD_RFS1 = 0x00000001,
295 #define RDF1ST RD_RFP1
296 #define RDFEND RD_RFP0
297 #define RD_RFP (RD_RFP1|RD_RFP0)
301 FCFTR_RFF2 = 0x00040000, FCFTR_RFF1 = 0x00020000,
302 FCFTR_RFF0 = 0x00010000, FCFTR_RFD2 = 0x00000004,
303 FCFTR_RFD1 = 0x00000002, FCFTR_RFD0 = 0x00000001,
305 #define DEFAULT_FIFO_F_D_RFF (FCFTR_RFF2 | FCFTR_RFF1 | FCFTR_RFF0)
306 #define DEFAULT_FIFO_F_D_RFD (FCFTR_RFD2 | FCFTR_RFD1 | FCFTR_RFD0)
308 /* Transmit descriptor bit */
310 TD_TACT = 0x80000000, TD_TDLE = 0x40000000,
311 TD_TFP1 = 0x20000000, TD_TFP0 = 0x10000000,
312 TD_TFE = 0x08000000, TD_TWBI = 0x04000000,
314 #define TDF1ST TD_TFP1
315 #define TDFEND TD_TFP0
316 #define TD_TFP (TD_TFP1|TD_TFP0)
320 RMCR_RNC = 0x00000001,
324 enum FELIC_MODE_BIT {
325 ECMR_TRCCM = 0x04000000, ECMR_RCSC = 0x00800000,
326 ECMR_DPAD = 0x00200000, ECMR_RZPF = 0x00100000,
327 ECMR_ZPF = 0x00080000, ECMR_PFR = 0x00040000, ECMR_RXF = 0x00020000,
328 ECMR_TXF = 0x00010000, ECMR_MCT = 0x00002000, ECMR_PRCEF = 0x00001000,
329 ECMR_PMDE = 0x00000200, ECMR_RE = 0x00000040, ECMR_TE = 0x00000020,
330 ECMR_RTM = 0x00000010, ECMR_ILB = 0x00000008, ECMR_ELB = 0x00000004,
331 ECMR_DM = 0x00000002, ECMR_PRM = 0x00000001,
335 enum ECSR_STATUS_BIT {
336 ECSR_BRCRX = 0x20, ECSR_PSRTO = 0x10,
338 ECSR_MPD = 0x02, ECSR_ICD = 0x01,
341 #define DEFAULT_ECSR_INIT (ECSR_BRCRX | ECSR_PSRTO | ECSR_LCHNG | \
342 ECSR_ICD | ECSIPR_MPDIP)
345 enum ECSIPR_STATUS_MASK_BIT {
346 ECSIPR_BRCRXIP = 0x20, ECSIPR_PSRTOIP = 0x10,
347 ECSIPR_LCHNGIP = 0x04,
348 ECSIPR_MPDIP = 0x02, ECSIPR_ICDIP = 0x01,
351 #define DEFAULT_ECSIPR_INIT (ECSIPR_BRCRXIP | ECSIPR_PSRTOIP | \
352 ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP)
366 DESC_I_TINT4 = 0x0800, DESC_I_TINT3 = 0x0400, DESC_I_TINT2 = 0x0200,
367 DESC_I_TINT1 = 0x0100, DESC_I_RINT8 = 0x0080, DESC_I_RINT5 = 0x0010,
368 DESC_I_RINT4 = 0x0008, DESC_I_RINT3 = 0x0004, DESC_I_RINT2 = 0x0002,
369 DESC_I_RINT1 = 0x0001,
374 RPADIR_PADS1 = 0x20000, RPADIR_PADS0 = 0x10000,
375 RPADIR_PADR = 0x0003f,
379 #define DEFAULT_FDR_INIT 0x00000707
382 enum ARSTR_BIT { ARSTR_ARSTR = 0x00000001, };
386 TSU_FWEN0_0 = 0x00000001,
390 enum TSU_ADSBSY_BIT {
391 TSU_ADSBSY_0 = 0x00000001,
396 TSU_TEN_0 = 0x80000000,
401 TSU_FWSL0_FW50 = 0x1000, TSU_FWSL0_FW40 = 0x0800,
402 TSU_FWSL0_FW30 = 0x0400, TSU_FWSL0_FW20 = 0x0200,
403 TSU_FWSL0_FW10 = 0x0100, TSU_FWSL0_RMSA0 = 0x0010,
408 TSU_FWSLC_POSTENU = 0x2000, TSU_FWSLC_POSTENL = 0x1000,
409 TSU_FWSLC_CAMSEL03 = 0x0080, TSU_FWSLC_CAMSEL02 = 0x0040,
410 TSU_FWSLC_CAMSEL01 = 0x0020, TSU_FWSLC_CAMSEL00 = 0x0010,
411 TSU_FWSLC_CAMSEL13 = 0x0008, TSU_FWSLC_CAMSEL12 = 0x0004,
412 TSU_FWSLC_CAMSEL11 = 0x0002, TSU_FWSLC_CAMSEL10 = 0x0001,
416 #define TSU_VTAG_ENABLE 0x80000000
417 #define TSU_VTAG_VID_MASK 0x00000fff
419 /* The sh ether Tx buffer descriptors.
420 * This structure should be 20 bytes.
422 struct sh_eth_txdesc {
423 u32 status; /* TD0 */
424 #if defined(__LITTLE_ENDIAN)
426 u16 buffer_length; /* TD1 */
428 u16 buffer_length; /* TD1 */
432 u32 pad1; /* padding data */
433 } __aligned(2) __packed;
435 /* The sh ether Rx buffer descriptors.
436 * This structure should be 20 bytes.
438 struct sh_eth_rxdesc {
439 u32 status; /* RD0 */
440 #if defined(__LITTLE_ENDIAN)
441 u16 frame_length; /* RD1 */
442 u16 buffer_length; /* RD1 */
444 u16 buffer_length; /* RD1 */
445 u16 frame_length; /* RD1 */
448 u32 pad0; /* padding data */
449 } __aligned(2) __packed;
451 /* This structure is used by each CPU dependency handling. */
452 struct sh_eth_cpu_data {
453 /* optional functions */
454 void (*chip_reset)(struct net_device *ndev);
455 void (*set_duplex)(struct net_device *ndev);
456 void (*set_rate)(struct net_device *ndev);
458 /* mandatory initialize value */
460 unsigned long eesipr_value;
462 /* optional initialize value */
463 unsigned long ecsr_value;
464 unsigned long ecsipr_value;
465 unsigned long fdr_value;
466 unsigned long fcftr_value;
467 unsigned long rpadir_value;
469 /* interrupt checking mask */
470 unsigned long tx_check;
471 unsigned long eesr_err_check;
473 /* hardware features */
474 unsigned long irq_flags; /* IRQ configuration flags */
475 unsigned no_psr:1; /* EtherC DO NOT have PSR */
476 unsigned apr:1; /* EtherC have APR */
477 unsigned mpr:1; /* EtherC have MPR */
478 unsigned tpauser:1; /* EtherC have TPAUSER */
479 unsigned bculr:1; /* EtherC have BCULR */
480 unsigned tsu:1; /* EtherC have TSU */
481 unsigned hw_swap:1; /* E-DMAC have DE bit in EDMR */
482 unsigned rpadir:1; /* E-DMAC have RPADIR */
483 unsigned no_trimd:1; /* E-DMAC DO NOT have TRIMD */
484 unsigned no_ade:1; /* E-DMAC DO NOT have ADE bit in EESR */
485 unsigned hw_crc:1; /* E-DMAC have CSMR */
486 unsigned select_mii:1; /* EtherC have RMII_MII (MII select register) */
487 unsigned shift_rd0:1; /* shift Rx descriptor word 0 right by 16 */
488 unsigned rmiimode:1; /* EtherC has RMIIMODE register */
491 struct sh_eth_private {
492 struct platform_device *pdev;
493 struct sh_eth_cpu_data *cd;
494 const u16 *reg_offset;
496 void __iomem *tsu_addr;
499 dma_addr_t rx_desc_dma;
500 dma_addr_t tx_desc_dma;
501 struct sh_eth_rxdesc *rx_ring;
502 struct sh_eth_txdesc *tx_ring;
503 struct sk_buff **rx_skbuff;
504 struct sk_buff **tx_skbuff;
505 spinlock_t lock; /* Register access lock */
506 u32 cur_rx, dirty_rx; /* Producer/consumer ring indices */
507 u32 cur_tx, dirty_tx;
508 u32 rx_buf_sz; /* Based on MTU+slack. */
510 struct napi_struct napi;
511 /* MII transceiver section. */
512 u32 phy_id; /* PHY ID */
513 struct mii_bus *mii_bus; /* MDIO bus control */
514 struct phy_device *phydev; /* PHY device control */
516 phy_interface_t phy_interface;
520 int port; /* for TSU */
521 int vlan_num_ids; /* for VLAN tag filter */
523 unsigned no_ether_link:1;
524 unsigned ether_link_active_low:1;
527 static inline void sh_eth_soft_swap(char *src, int len)
529 #ifdef __LITTLE_ENDIAN__
532 maxp = p + ((len + sizeof(u32) - 1) / sizeof(u32));
534 for (; p < maxp; p++)
539 static inline void sh_eth_write(struct net_device *ndev, unsigned long data,
542 struct sh_eth_private *mdp = netdev_priv(ndev);
544 iowrite32(data, mdp->addr + mdp->reg_offset[enum_index]);
547 static inline unsigned long sh_eth_read(struct net_device *ndev,
550 struct sh_eth_private *mdp = netdev_priv(ndev);
552 return ioread32(mdp->addr + mdp->reg_offset[enum_index]);
555 static inline void *sh_eth_tsu_get_offset(struct sh_eth_private *mdp,
558 return mdp->tsu_addr + mdp->reg_offset[enum_index];
561 static inline void sh_eth_tsu_write(struct sh_eth_private *mdp,
562 unsigned long data, int enum_index)
564 iowrite32(data, mdp->tsu_addr + mdp->reg_offset[enum_index]);
567 static inline unsigned long sh_eth_tsu_read(struct sh_eth_private *mdp,
570 return ioread32(mdp->tsu_addr + mdp->reg_offset[enum_index]);
573 #endif /* #ifndef __SH_ETH_H__ */