2 * SuperH Ethernet device driver
4 * Copyright (C) 2006-2008 Nobuhiro Iwamatsu
5 * Copyright (C) 2008-2009 Renesas Solutions Corp.
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms and conditions of the GNU General Public License,
9 * version 2, as published by the Free Software Foundation.
11 * This program is distributed in the hope it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along with
16 * this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 * The full GNU General Public License is included in this distribution in
20 * the file called "COPYING".
26 #include <linux/module.h>
27 #include <linux/kernel.h>
28 #include <linux/spinlock.h>
29 #include <linux/workqueue.h>
30 #include <linux/netdevice.h>
31 #include <linux/phy.h>
33 #include <asm/sh_eth.h>
35 #define CARDNAME "sh-eth"
36 #define TX_TIMEOUT (5*HZ)
37 #define TX_RING_SIZE 64 /* Tx ring size */
38 #define RX_RING_SIZE 64 /* Rx ring size */
40 #define PKT_BUF_SZ 1538
42 #if defined(CONFIG_CPU_SUBTYPE_SH7763)
43 /* This CPU register maps is very difference by other SH4 CPU */
45 /* Chip Base Address */
46 # define SH_TSU_ADDR 0xFEE01800
47 # define ARSTR SH_TSU_ADDR
85 # define TPAUSER 0x564
102 /* TSU Absolute Address */
103 # define TSU_CTRST 0x004
104 # define TSU_FWEN0 0x010
105 # define TSU_FWEN1 0x014
106 # define TSU_FCM 0x18
107 # define TSU_BSYSL0 0x20
108 # define TSU_BSYSL1 0x24
109 # define TSU_PRISL0 0x28
110 # define TSU_PRISL1 0x2C
111 # define TSU_FWSL0 0x30
112 # define TSU_FWSL1 0x34
113 # define TSU_FWSLC 0x38
114 # define TSU_QTAG0 0x40
115 # define TSU_QTAG1 0x44
116 # define TSU_FWSR 0x50
117 # define TSU_FWINMK 0x54
118 # define TSU_ADQT0 0x48
119 # define TSU_ADQT1 0x4C
120 # define TSU_VTAG0 0x58
121 # define TSU_VTAG1 0x5C
122 # define TSU_ADSBSY 0x60
123 # define TSU_TEN 0x64
124 # define TSU_POST1 0x70
125 # define TSU_POST2 0x74
126 # define TSU_POST3 0x78
127 # define TSU_POST4 0x7C
128 # define TSU_ADRH0 0x100
129 # define TSU_ADRL0 0x104
130 # define TSU_ADRH31 0x1F8
131 # define TSU_ADRL31 0x1FC
133 # define TXNLCR0 0x80
134 # define TXALCR0 0x84
135 # define RXNLCR0 0x88
136 # define RXALCR0 0x8C
137 # define FWNLCR0 0x90
138 # define FWALCR0 0x94
139 # define TXNLCR1 0xA0
140 # define TXALCR1 0xA4
141 # define RXNLCR1 0xA8
142 # define RXALCR1 0xAC
143 # define FWNLCR1 0xB0
144 # define FWALCR1 0x40
146 #elif defined(CONFIG_CPU_SH4) /* #if defined(CONFIG_CPU_SUBTYPE_SH7763) */
158 #define TPAUSER 0x164
160 #define TPAUSECR 0x168
198 #else /* #elif defined(CONFIG_CPU_SH4) */
199 /* This section is SH3 or SH2 */
200 #ifndef CONFIG_CPU_SUBTYPE_SH7619
201 /* Chip base address */
202 # define SH_TSU_ADDR 0xA7000804
203 # define ARSTR 0xA7000800
208 # define EDTRR 0x0004
209 # define EDRRR 0x0008
210 # define TDLAR 0x000C
211 # define RDLAR 0x0010
213 # define EESIPR 0x0018
214 # define TRSCER 0x001C
215 # define RMFCR 0x0020
219 # define EDOCR 0x0030
220 # define FCFTR 0x0034
221 # define RPADIR 0x0038
222 # define TRIMD 0x003C
223 # define RBWAR 0x0040
224 # define RDFAR 0x0044
225 # define TBRAR 0x004C
226 # define TDFAR 0x0050
231 # define ECSIPR 0x0168
237 # define TROCR 0x0180
240 # define CNDCR 0x018C
241 # define CEFCR 0x0194
242 # define FRECR 0x0198
243 # define TSFRCR 0x019C
244 # define TLFRCR 0x01A0
246 # define MAFCR 0x01A8
248 # if defined(CONFIG_CPU_SUBTYPE_SH7710)
251 # define TPAUSER 0x1C4
253 # endif /* CONFIG_CPU_SH7710 */
256 # define TSU_CTRST 0x004
257 # define TSU_FWEN0 0x010
258 # define TSU_FWEN1 0x014
259 # define TSU_FCM 0x018
260 # define TSU_BSYSL0 0x020
261 # define TSU_BSYSL1 0x024
262 # define TSU_PRISL0 0x028
263 # define TSU_PRISL1 0x02C
264 # define TSU_FWSL0 0x030
265 # define TSU_FWSL1 0x034
266 # define TSU_FWSLC 0x038
267 # define TSU_QTAGM0 0x040
268 # define TSU_QTAGM1 0x044
269 # define TSU_ADQT0 0x048
270 # define TSU_ADQT1 0x04C
271 # define TSU_FWSR 0x050
272 # define TSU_FWINMK 0x054
273 # define TSU_ADSBSY 0x060
274 # define TSU_TEN 0x064
275 # define TSU_POST1 0x070
276 # define TSU_POST2 0x074
277 # define TSU_POST3 0x078
278 # define TSU_POST4 0x07C
279 # define TXNLCR0 0x080
280 # define TXALCR0 0x084
281 # define RXNLCR0 0x088
282 # define RXALCR0 0x08C
283 # define FWNLCR0 0x090
284 # define FWALCR0 0x094
285 # define TXNLCR1 0x0A0
286 # define TXALCR1 0x0A4
287 # define RXNLCR1 0x0A8
288 # define RXALCR1 0x0AC
289 # define FWNLCR1 0x0B0
290 # define FWALCR1 0x0B4
292 #define TSU_ADRH0 0x0100
293 #define TSU_ADRL0 0x0104
294 #define TSU_ADRL31 0x01FC
296 #endif /* CONFIG_CPU_SUBTYPE_SH7763 */
298 /* There are avoid compile error... */
311 #if !defined(TPAUSER)
312 #define TPAUSER 0x0fc
315 /* Driver's parameters */
316 #if defined(CONFIG_CPU_SH4)
317 #define SH4_SKB_RX_ALIGN 32
319 #define SH2_SH3_SKB_RX_ALIGN 2
325 #ifdef CONFIG_CPU_SUBTYPE_SH7763
328 EDSR_ENT
= 0x01, EDSR_ENR
= 0x02,
330 #define EDSR_ENALL (EDSR_ENT|EDSR_ENR)
334 GECMR_10
= 0x0, GECMR_100
= 0x04, GECMR_1000
= 0x01,
340 EDMR_EL
= 0x40, /* Litte endian */
341 EDMR_DL1
= 0x20, EDMR_DL0
= 0x10,
342 #ifdef CONFIG_CPU_SUBTYPE_SH7763
344 #else /* CONFIG_CPU_SUBTYPE_SH7763 */
351 #ifdef CONFIG_CPU_SUBTYPE_SH7763
365 TPAUSER_TPAUSE
= 0x0000ffff,
366 TPAUSER_UNLIMITED
= 0,
371 BCFR_RPAUSE
= 0x0000ffff,
377 PIR_MDI
= 0x08, PIR_MDO
= 0x04, PIR_MMD
= 0x02, PIR_MDC
= 0x01,
381 enum PHY_STATUS_BIT
{ PHY_ST_LINK
= 0x01, };
385 EESR_TWB1
= 0x80000000,
386 EESR_TWB
= 0x40000000, /* same as TWB0 */
387 EESR_TC1
= 0x20000000,
388 EESR_TUC
= 0x10000000,
389 EESR_ROC
= 0x08000000,
390 EESR_TABT
= 0x04000000,
391 EESR_RABT
= 0x02000000,
392 EESR_RFRMER
= 0x01000000, /* same as RFCOF */
393 EESR_ADE
= 0x00800000,
394 EESR_ECI
= 0x00400000,
395 EESR_FTC
= 0x00200000, /* same as TC or TC0 */
396 EESR_TDE
= 0x00100000,
397 EESR_TFE
= 0x00080000, /* same as TFUF */
398 EESR_FRC
= 0x00040000, /* same as FR */
399 EESR_RDE
= 0x00020000,
400 EESR_RFE
= 0x00010000,
401 EESR_CND
= 0x00000800,
402 EESR_DLC
= 0x00000400,
403 EESR_CD
= 0x00000200,
404 EESR_RTO
= 0x00000100,
405 EESR_RMAF
= 0x00000080,
406 EESR_CEEF
= 0x00000040,
407 EESR_CELF
= 0x00000020,
408 EESR_RRF
= 0x00000010,
409 EESR_RTLF
= 0x00000008,
410 EESR_RTSF
= 0x00000004,
411 EESR_PRE
= 0x00000002,
412 EESR_CERF
= 0x00000001,
415 #define DEFAULT_TX_CHECK (EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | \
417 #define DEFAULT_EESR_ERR_CHECK (EESR_TWB | EESR_TABT | EESR_RABT | \
418 EESR_RDE | EESR_RFRMER | EESR_ADE | \
419 EESR_TFE | EESR_TDE | EESR_ECI)
420 #define DEFAULT_TX_ERROR_CHECK (EESR_TWB | EESR_TABT | EESR_ADE | EESR_TDE | \
425 DMAC_M_TWB
= 0x40000000, DMAC_M_TABT
= 0x04000000,
426 DMAC_M_RABT
= 0x02000000,
427 DMAC_M_RFRMER
= 0x01000000, DMAC_M_ADF
= 0x00800000,
428 DMAC_M_ECI
= 0x00400000, DMAC_M_FTC
= 0x00200000,
429 DMAC_M_TDE
= 0x00100000, DMAC_M_TFE
= 0x00080000,
430 DMAC_M_FRC
= 0x00040000, DMAC_M_RDE
= 0x00020000,
431 DMAC_M_RFE
= 0x00010000, DMAC_M_TINT4
= 0x00000800,
432 DMAC_M_TINT3
= 0x00000400, DMAC_M_TINT2
= 0x00000200,
433 DMAC_M_TINT1
= 0x00000100, DMAC_M_RINT8
= 0x00000080,
434 DMAC_M_RINT5
= 0x00000010, DMAC_M_RINT4
= 0x00000008,
435 DMAC_M_RINT3
= 0x00000004, DMAC_M_RINT2
= 0x00000002,
436 DMAC_M_RINT1
= 0x00000001,
439 /* Receive descriptor bit */
441 RD_RACT
= 0x80000000, RD_RDEL
= 0x40000000,
442 RD_RFP1
= 0x20000000, RD_RFP0
= 0x10000000,
443 RD_RFE
= 0x08000000, RD_RFS10
= 0x00000200,
444 RD_RFS9
= 0x00000100, RD_RFS8
= 0x00000080,
445 RD_RFS7
= 0x00000040, RD_RFS6
= 0x00000020,
446 RD_RFS5
= 0x00000010, RD_RFS4
= 0x00000008,
447 RD_RFS3
= 0x00000004, RD_RFS2
= 0x00000002,
448 RD_RFS1
= 0x00000001,
450 #define RDF1ST RD_RFP1
451 #define RDFEND RD_RFP0
452 #define RD_RFP (RD_RFP1|RD_RFP0)
456 FCFTR_RFF2
= 0x00040000, FCFTR_RFF1
= 0x00020000,
457 FCFTR_RFF0
= 0x00010000, FCFTR_RFD2
= 0x00000004,
458 FCFTR_RFD1
= 0x00000002, FCFTR_RFD0
= 0x00000001,
460 #define DEFAULT_FIFO_F_D_RFF (FCFTR_RFF2 | FCFTR_RFF1 | FCFTR_RFF0)
461 #define DEFAULT_FIFO_F_D_RFD (FCFTR_RFD2 | FCFTR_RFD1 | FCFTR_RFD0)
463 /* Transfer descriptor bit */
465 TD_TACT
= 0x80000000,
466 TD_TDLE
= 0x40000000, TD_TFP1
= 0x20000000,
467 TD_TFP0
= 0x10000000,
469 #define TDF1ST TD_TFP1
470 #define TDFEND TD_TFP0
471 #define TD_TFP (TD_TFP1|TD_TFP0)
474 #define DEFAULT_RMCR_VALUE 0x00000000
477 enum FELIC_MODE_BIT
{
478 ECMR_TRCCM
= 0x04000000, ECMR_RCSC
= 0x00800000,
479 ECMR_DPAD
= 0x00200000, ECMR_RZPF
= 0x00100000,
480 ECMR_ZPF
= 0x00080000, ECMR_PFR
= 0x00040000, ECMR_RXF
= 0x00020000,
481 ECMR_TXF
= 0x00010000, ECMR_MCT
= 0x00002000, ECMR_PRCEF
= 0x00001000,
482 ECMR_PMDE
= 0x00000200, ECMR_RE
= 0x00000040, ECMR_TE
= 0x00000020,
483 ECMR_RTM
= 0x00000010, ECMR_ILB
= 0x00000008, ECMR_ELB
= 0x00000004,
484 ECMR_DM
= 0x00000002, ECMR_PRM
= 0x00000001,
488 enum ECSR_STATUS_BIT
{
489 ECSR_BRCRX
= 0x20, ECSR_PSRTO
= 0x10,
491 ECSR_MPD
= 0x02, ECSR_ICD
= 0x01,
494 #define DEFAULT_ECSR_INIT (ECSR_BRCRX | ECSR_PSRTO | ECSR_LCHNG | \
495 ECSR_ICD | ECSIPR_MPDIP)
498 enum ECSIPR_STATUS_MASK_BIT
{
499 ECSIPR_BRCRXIP
= 0x20, ECSIPR_PSRTOIP
= 0x10,
500 ECSIPR_LCHNGIP
= 0x04,
501 ECSIPR_MPDIP
= 0x02, ECSIPR_ICDIP
= 0x01,
504 #define DEFAULT_ECSIPR_INIT (ECSIPR_BRCRXIP | ECSIPR_PSRTOIP | \
505 ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP)
519 DESC_I_TINT4
= 0x0800, DESC_I_TINT3
= 0x0400, DESC_I_TINT2
= 0x0200,
520 DESC_I_TINT1
= 0x0100, DESC_I_RINT8
= 0x0080, DESC_I_RINT5
= 0x0010,
521 DESC_I_RINT4
= 0x0008, DESC_I_RINT3
= 0x0004, DESC_I_RINT2
= 0x0002,
522 DESC_I_RINT1
= 0x0001,
527 RPADIR_PADS1
= 0x20000, RPADIR_PADS0
= 0x10000,
528 RPADIR_PADR
= 0x0003f,
532 #define RFLR_VALUE 0x1000
535 #define DEFAULT_FDR_INIT 0x00000707
538 PHY_CTRL
= 0, PHY_STAT
= 1, PHY_IDT1
= 2, PHY_IDT2
= 3,
539 PHY_ANA
= 4, PHY_ANL
= 5, PHY_ANE
= 6,
545 PHY_C_RESET
= 0x8000, PHY_C_LOOPBK
= 0x4000, PHY_C_SPEEDSL
= 0x2000,
546 PHY_C_ANEGEN
= 0x1000, PHY_C_PWRDN
= 0x0800, PHY_C_ISO
= 0x0400,
547 PHY_C_RANEG
= 0x0200, PHY_C_DUPLEX
= 0x0100, PHY_C_COLT
= 0x0080,
549 #define DM9161_PHY_C_ANEGEN 0 /* auto nego special */
553 PHY_S_100T4
= 0x8000, PHY_S_100X_F
= 0x4000, PHY_S_100X_H
= 0x2000,
554 PHY_S_10T_F
= 0x1000, PHY_S_10T_H
= 0x0800, PHY_S_ANEGC
= 0x0020,
555 PHY_S_RFAULT
= 0x0010, PHY_S_ANEGA
= 0x0008, PHY_S_LINK
= 0x0004,
556 PHY_S_JAB
= 0x0002, PHY_S_EXTD
= 0x0001,
561 PHY_A_NP
= 0x8000, PHY_A_ACK
= 0x4000, PHY_A_RF
= 0x2000,
562 PHY_A_FCS
= 0x0400, PHY_A_T4
= 0x0200, PHY_A_FDX
= 0x0100,
563 PHY_A_HDX
= 0x0080, PHY_A_10FDX
= 0x0040, PHY_A_10HDX
= 0x0020,
568 PHY_L_NP
= 0x8000, PHY_L_ACK
= 0x4000, PHY_L_RF
= 0x2000,
569 PHY_L_FCS
= 0x0400, PHY_L_T4
= 0x0200, PHY_L_FDX
= 0x0100,
570 PHY_L_HDX
= 0x0080, PHY_L_10FDX
= 0x0040, PHY_L_10HDX
= 0x0020,
576 PHY_E_PDF
= 0x0010, PHY_E_LPNPA
= 0x0008, PHY_E_NPA
= 0x0004,
577 PHY_E_PRX
= 0x0002, PHY_E_LPANEGA
= 0x0001,
582 PHY_16_BP4B45
= 0x8000, PHY_16_BPSCR
= 0x4000, PHY_16_BPALIGN
= 0x2000,
583 PHY_16_BP_ADPOK
= 0x1000, PHY_16_Repeatmode
= 0x0800,
584 PHY_16_TXselect
= 0x0400,
585 PHY_16_Rsvd
= 0x0200, PHY_16_RMIIEnable
= 0x0100,
586 PHY_16_Force100LNK
= 0x0080,
587 PHY_16_APDLED_CTL
= 0x0040, PHY_16_COLLED_CTL
= 0x0020,
588 PHY_16_RPDCTR_EN
= 0x0010,
589 PHY_16_ResetStMch
= 0x0008, PHY_16_PreamSupr
= 0x0004,
590 PHY_16_Sleepmode
= 0x0002,
591 PHY_16_RemoteLoopOut
= 0x0001,
596 #define POST0_RX (POST_RX)
597 #define POST0_FW (POST_FW)
598 #define POST1_RX (POST_RX >> 2)
599 #define POST1_FW (POST_FW >> 2)
600 #define POST_ALL (POST0_RX | POST0_FW | POST1_RX | POST1_FW)
603 enum ARSTR_BIT
{ ARSTR_ARSTR
= 0x00000001, };
607 TSU_FWEN0_0
= 0x00000001,
611 enum TSU_ADSBSY_BIT
{
612 TSU_ADSBSY_0
= 0x00000001,
617 TSU_TEN_0
= 0x80000000,
622 TSU_FWSL0_FW50
= 0x1000, TSU_FWSL0_FW40
= 0x0800,
623 TSU_FWSL0_FW30
= 0x0400, TSU_FWSL0_FW20
= 0x0200,
624 TSU_FWSL0_FW10
= 0x0100, TSU_FWSL0_RMSA0
= 0x0010,
629 TSU_FWSLC_POSTENU
= 0x2000, TSU_FWSLC_POSTENL
= 0x1000,
630 TSU_FWSLC_CAMSEL03
= 0x0080, TSU_FWSLC_CAMSEL02
= 0x0040,
631 TSU_FWSLC_CAMSEL01
= 0x0020, TSU_FWSLC_CAMSEL00
= 0x0010,
632 TSU_FWSLC_CAMSEL13
= 0x0008, TSU_FWSLC_CAMSEL12
= 0x0004,
633 TSU_FWSLC_CAMSEL11
= 0x0002, TSU_FWSLC_CAMSEL10
= 0x0001,
637 * The sh ether Tx buffer descriptors.
638 * This structure should be 20 bytes.
640 struct sh_eth_txdesc
{
641 u32 status
; /* TD0 */
642 #if defined(CONFIG_CPU_LITTLE_ENDIAN)
644 u16 buffer_length
; /* TD1 */
646 u16 buffer_length
; /* TD1 */
650 u32 pad1
; /* padding data */
651 } __attribute__((aligned(2), packed
));
654 * The sh ether Rx buffer descriptors.
655 * This structure should be 20 bytes.
657 struct sh_eth_rxdesc
{
658 u32 status
; /* RD0 */
659 #if defined(CONFIG_CPU_LITTLE_ENDIAN)
660 u16 frame_length
; /* RD1 */
661 u16 buffer_length
; /* RD1 */
663 u16 buffer_length
; /* RD1 */
664 u16 frame_length
; /* RD1 */
667 u32 pad0
; /* padding data */
668 } __attribute__((aligned(2), packed
));
670 /* This structure is used by each CPU dependency handling. */
671 struct sh_eth_cpu_data
{
672 /* optional functions */
673 void (*chip_reset
)(struct net_device
*ndev
);
674 void (*set_duplex
)(struct net_device
*ndev
);
675 void (*set_rate
)(struct net_device
*ndev
);
677 /* mandatory initialize value */
678 unsigned long eesipr_value
;
680 /* optional initialize value */
681 unsigned long ecsr_value
;
682 unsigned long ecsipr_value
;
683 unsigned long fdr_value
;
684 unsigned long fcftr_value
;
685 unsigned long rpadir_value
;
686 unsigned long rmcr_value
;
688 /* interrupt checking mask */
689 unsigned long tx_check
;
690 unsigned long eesr_err_check
;
691 unsigned long tx_error_check
;
693 /* hardware features */
694 unsigned no_psr
:1; /* EtherC DO NOT have PSR */
695 unsigned apr
:1; /* EtherC have APR */
696 unsigned mpr
:1; /* EtherC have MPR */
697 unsigned tpauser
:1; /* EtherC have TPAUSER */
698 unsigned bculr
:1; /* EtherC have BCULR */
699 unsigned hw_swap
:1; /* E-DMAC have DE bit in EDMR */
700 unsigned rpadir
:1; /* E-DMAC have RPADIR */
701 unsigned no_trimd
:1; /* E-DMAC DO NOT have TRIMD */
702 unsigned no_ade
:1; /* E-DMAC DO NOT have ADE bit in EESR */
705 struct sh_eth_private
{
706 struct sh_eth_cpu_data
*cd
;
707 dma_addr_t rx_desc_dma
;
708 dma_addr_t tx_desc_dma
;
709 struct sh_eth_rxdesc
*rx_ring
;
710 struct sh_eth_txdesc
*tx_ring
;
711 struct sk_buff
**rx_skbuff
;
712 struct sk_buff
**tx_skbuff
;
713 struct net_device_stats stats
;
714 struct timer_list timer
;
716 u32 cur_rx
, dirty_rx
; /* Producer/consumer ring indices */
717 u32 cur_tx
, dirty_tx
;
718 u32 rx_buf_sz
; /* Based on MTU+slack. */
720 /* MII transceiver section. */
721 u32 phy_id
; /* PHY ID */
722 struct mii_bus
*mii_bus
; /* MDIO bus control */
723 struct phy_device
*phydev
; /* PHY device control */
728 u32 rx_int_var
, tx_int_var
; /* interrupt control variables */
729 char post_rx
; /* POST receive */
730 char post_fw
; /* POST forward */
731 struct net_device_stats tsu_stats
; /* TSU forward status */
733 unsigned no_ether_link
:1;
734 unsigned ether_link_active_low
:1;
737 static inline void sh_eth_soft_swap(char *src
, int len
)
739 #ifdef __LITTLE_ENDIAN__
742 maxp
= p
+ ((len
+ sizeof(u32
) - 1) / sizeof(u32
));
744 for (; p
< maxp
; p
++)
749 #endif /* #ifndef __SH_ETH_H__ */