2 * Tehuti Networks(R) Network Driver
3 * Copyright (C) 2007 Tehuti Networks Ltd. All rights reserved
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/netdevice.h>
17 #include <linux/etherdevice.h>
18 #include <linux/pci.h>
19 #include <linux/delay.h>
20 #include <linux/ethtool.h>
21 #include <linux/mii.h>
22 #include <linux/crc32.h>
23 #include <linux/uaccess.h>
26 #include <linux/tcp.h>
27 #include <linux/sched.h>
28 #include <linux/tty.h>
29 #include <linux/if_vlan.h>
30 #include <linux/interrupt.h>
31 #include <linux/vmalloc.h>
32 #include <linux/firmware.h>
33 #include <asm/byteorder.h>
35 /* Compile Time Switches */
39 #define BDX_DELAY_WPTR
43 #if !defined CONFIG_PCI_MSI
47 #define BDX_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
53 #define BDX_OP_WRITE 2
55 /* RX copy break size */
56 #define BDX_COPYBREAK 257
58 #define DRIVER_AUTHOR "Tehuti Networks(R)"
59 #define BDX_DRV_DESC "Tehuti Networks(R) Network Driver"
60 #define BDX_DRV_NAME "tehuti"
61 #define BDX_NIC_NAME "Tehuti 10 Giga TOE SmartNIC"
62 #define BDX_NIC2PORT_NAME "Tehuti 2-Port 10 Giga TOE SmartNIC"
63 #define BDX_DRV_VERSION "7.29.3"
66 # define BDX_MSI_STRING "msi "
68 # define BDX_MSI_STRING ""
71 /* netdev tx queue len for Luxor. default value is, btw, 1000
72 * ifcontig eth1 txqueuelen 3000 - to change it at runtime */
73 #define BDX_NDEV_TXQ_LEN 3000
75 #define FIFO_SIZE 4096
76 #define FIFO_EXTRA_SPACE 1024
78 #define MIN(x, y) ((x) < (y) ? (x) : (y))
80 #if BITS_PER_LONG == 64
81 # define H32_64(x) (u32) ((u64)(x) >> 32)
82 # define L32_64(x) (u32) ((u64)(x) & 0xffffffff)
83 #elif BITS_PER_LONG == 32
85 # define L32_64(x) ((u32) (x))
86 #else /* BITS_PER_LONG == ?? */
87 # error BITS_PER_LONG is undefined. Must be 64 or 32
88 #endif /* BITS_PER_LONG */
91 # define CPU_CHIP_SWAP32(x) swab32(x)
92 # define CPU_CHIP_SWAP16(x) swab16(x)
94 # define CPU_CHIP_SWAP32(x) (x)
95 # define CPU_CHIP_SWAP16(x) (x)
98 #define READ_REG(pp, reg) readl(pp->pBdxRegs + reg)
99 #define WRITE_REG(pp, reg, val) writel(val, pp->pBdxRegs + reg)
101 #ifndef DMA_64BIT_MASK
102 # define DMA_64BIT_MASK 0xffffffffffffffffULL
105 #ifndef DMA_32BIT_MASK
106 # define DMA_32BIT_MASK 0x00000000ffffffffULL
110 # define NET_IP_ALIGN 2
114 # define NETDEV_TX_OK 0
117 #define LUXOR_MAX_PORT 2
118 #define BDX_MAX_RX_DONE 150
119 #define BDX_TXF_DESC_SZ 16
120 #define BDX_MAX_TX_LEVEL (priv->txd_fifo0.m.memsz - 16)
121 #define BDX_MIN_TX_LEVEL 256
122 #define BDX_NO_UPD_PACKETS 40
128 struct bdx_priv *priv[LUXOR_MAX_PORT];
131 enum { IRQ_INTX, IRQ_MSI, IRQ_MSIX };
133 #define PCK_TH_MULT 128
134 #define INT_COAL_MULT 2
136 #define BITS_MASK(nbits) ((1<<nbits)-1)
137 #define GET_BITS_SHIFT(x, nbits, nshift) (((x)>>nshift)&BITS_MASK(nbits))
138 #define BITS_SHIFT_MASK(nbits, nshift) (BITS_MASK(nbits)<<nshift)
139 #define BITS_SHIFT_VAL(x, nbits, nshift) (((x)&BITS_MASK(nbits))<<nshift)
140 #define BITS_SHIFT_CLEAR(x, nbits, nshift) \
141 ((x)&(~BITS_SHIFT_MASK(nbits, nshift)))
143 #define GET_INT_COAL(x) GET_BITS_SHIFT(x, 15, 0)
144 #define GET_INT_COAL_RC(x) GET_BITS_SHIFT(x, 1, 15)
145 #define GET_RXF_TH(x) GET_BITS_SHIFT(x, 4, 16)
146 #define GET_PCK_TH(x) GET_BITS_SHIFT(x, 4, 20)
148 #define INT_REG_VAL(coal, coal_rc, rxf_th, pck_th) \
149 ((coal)|((coal_rc)<<15)|((rxf_th)<<16)|((pck_th)<<20))
152 dma_addr_t da; /* physical address of fifo (used by HW) */
153 char *va; /* virtual address of fifo (used by SW) */
154 u32 rptr, wptr; /* cached values of RPTR and WPTR registers,
155 they're 32 bits on both 32 and 64 archs */
156 u16 reg_CFG0, reg_CFG1;
157 u16 reg_RPTR, reg_WPTR;
158 u16 memsz; /* memory size allocated for fifo */
160 u16 pktsz; /* skb packet size to allocate */
161 u16 rcvno; /* number of buffers that come from this RXF */
165 struct fifo m; /* minimal set of variables used by all fifos */
169 struct fifo m; /* minimal set of variables used by all fifos */
173 struct fifo m; /* minimal set of variables used by all fifos */
177 struct fifo m; /* minimal set of variables used by all fifos */
187 struct rx_map *elems;
198 * if len == 0 addr is dma
199 * if len != 0 addr is skb */
201 union bdx_dma_addr addr;
205 /* tx database - implemented as circular fifo buffer*/
207 struct tx_map *start; /* points to the first element */
208 struct tx_map *end; /* points just AFTER the last element */
209 struct tx_map *rptr; /* points to the next element to read */
210 struct tx_map *wptr; /* points to the next element to write */
211 int size; /* number of elements in the db */
214 /*Internal stats structure*/
216 u64 InUCast; /* 0x7200 */
217 u64 InMCast; /* 0x7210 */
218 u64 InBCast; /* 0x7220 */
219 u64 InPkts; /* 0x7230 */
220 u64 InErrors; /* 0x7240 */
221 u64 InDropped; /* 0x7250 */
222 u64 FrameTooLong; /* 0x7260 */
223 u64 FrameSequenceErrors; /* 0x7270 */
224 u64 InVLAN; /* 0x7280 */
225 u64 InDroppedDFE; /* 0x7290 */
226 u64 InDroppedIntFull; /* 0x72A0 */
227 u64 InFrameAlignErrors; /* 0x72B0 */
229 /* 0x72C0-0x72E0 RSRV */
231 u64 OutUCast; /* 0x72F0 */
232 u64 OutMCast; /* 0x7300 */
233 u64 OutBCast; /* 0x7310 */
234 u64 OutPkts; /* 0x7320 */
236 /* 0x7330-0x7360 RSRV */
238 u64 OutVLAN; /* 0x7370 */
239 u64 InUCastOctects; /* 0x7380 */
240 u64 OutUCastOctects; /* 0x7390 */
242 /* 0x73A0-0x73B0 RSRV */
244 u64 InBCastOctects; /* 0x73C0 */
245 u64 OutBCastOctects; /* 0x73D0 */
246 u64 InOctects; /* 0x73E0 */
247 u64 OutOctects; /* 0x73F0 */
251 void __iomem *pBdxRegs;
252 struct net_device *ndev;
254 struct napi_struct napi;
256 /* RX FIFOs: 1 for data (full) descs, and 2 for free descs */
257 struct rxd_fifo rxd_fifo0;
258 struct rxf_fifo rxf_fifo0;
259 struct rxdb *rxdb; /* rx dbs to store skb pointers */
261 struct vlan_group *vlgrp;
263 /* Tx FIFOs: 1 for data desc, 1 for empty (acks) desc */
264 struct txd_fifo txd_fifo0;
265 struct txf_fifo txf_fifo0;
269 #ifdef BDX_DELAY_WPTR
273 spinlock_t tx_lock; /* NETIF_F_LLTX mode */
279 struct bdx_stats hw_stats;
280 struct net_device_stats net_stats;
281 struct pci_dev *pdev;
293 /* RX FREE descriptor - 64bit*/
295 u32 info; /* Buffer Count + Info - described below */
296 u32 va_lo; /* VAdr[31:0] */
297 u32 va_hi; /* VAdr[63:32] */
298 u32 pa_lo; /* PAdr[31:0] */
299 u32 pa_hi; /* PAdr[63:32] */
300 u32 len; /* Buffer Length */
303 #define GET_RXD_BC(x) GET_BITS_SHIFT((x), 5, 0)
304 #define GET_RXD_RXFQ(x) GET_BITS_SHIFT((x), 2, 8)
305 #define GET_RXD_TO(x) GET_BITS_SHIFT((x), 1, 15)
306 #define GET_RXD_TYPE(x) GET_BITS_SHIFT((x), 4, 16)
307 #define GET_RXD_ERR(x) GET_BITS_SHIFT((x), 6, 21)
308 #define GET_RXD_RXP(x) GET_BITS_SHIFT((x), 1, 27)
309 #define GET_RXD_PKT_ID(x) GET_BITS_SHIFT((x), 3, 28)
310 #define GET_RXD_VTAG(x) GET_BITS_SHIFT((x), 1, 31)
311 #define GET_RXD_VLAN_ID(x) GET_BITS_SHIFT((x), 12, 0)
312 #define GET_RXD_VLAN_TCI(x) GET_BITS_SHIFT((x), 16, 0)
313 #define GET_RXD_CFI(x) GET_BITS_SHIFT((x), 1, 12)
314 #define GET_RXD_PRIO(x) GET_BITS_SHIFT((x), 3, 13)
324 /* PBL describes each virtual buffer to be */
325 /* transmitted from the host.*/
332 /* First word for TXD descriptor. It means: type = 3 for regular Tx packet,
333 * hw_csum = 7 for ip+udp+tcp hw checksums */
334 #define TXD_W1_VAL(bc, checksum, vtag, lgsnd, vlan_id) \
335 ((bc) | ((checksum)<<5) | ((vtag)<<8) | \
336 ((lgsnd)<<9) | (0x30000) | ((vlan_id)<<20))
344 struct pbl pbl[0]; /* Fragments */
345 } __attribute__ ((packed));
347 /* Register region size */
348 #define BDX_REGS_SIZE 0x1000
350 /* Registers from 0x0000-0x00fc were remapped to 0x4000-0x40fc */
351 #define regTXD_CFG1_0 0x4000
352 #define regRXF_CFG1_0 0x4010
353 #define regRXD_CFG1_0 0x4020
354 #define regTXF_CFG1_0 0x4030
355 #define regTXD_CFG0_0 0x4040
356 #define regRXF_CFG0_0 0x4050
357 #define regRXD_CFG0_0 0x4060
358 #define regTXF_CFG0_0 0x4070
359 #define regTXD_WPTR_0 0x4080
360 #define regRXF_WPTR_0 0x4090
361 #define regRXD_WPTR_0 0x40A0
362 #define regTXF_WPTR_0 0x40B0
363 #define regTXD_RPTR_0 0x40C0
364 #define regRXF_RPTR_0 0x40D0
365 #define regRXD_RPTR_0 0x40E0
366 #define regTXF_RPTR_0 0x40F0
367 #define regTXF_RPTR_3 0x40FC
369 /* hardware versioning */
370 #define FW_VER 0x5010
371 #define SROM_VER 0x5020
372 #define FPGA_VER 0x5030
373 #define FPGA_SEED 0x5040
375 /* Registers from 0x0100-0x0150 were remapped to 0x5100-0x5150 */
376 #define regISR regISR0
377 #define regISR0 0x5100
379 #define regIMR regIMR0
380 #define regIMR0 0x5110
382 #define regRDINTCM0 0x5120
383 #define regRDINTCM2 0x5128
385 #define regTDINTCM0 0x5130
387 #define regISR_MSK0 0x5140
389 #define regINIT_SEMAPHORE 0x5170
390 #define regINIT_STATUS 0x5180
392 #define regMAC_LNK_STAT 0x0200
393 #define MAC_LINK_STAT 0x4 /* Link state */
395 #define regGMAC_RXF_A 0x1240
397 #define regUNC_MAC0_A 0x1250
398 #define regUNC_MAC1_A 0x1260
399 #define regUNC_MAC2_A 0x1270
401 #define regVLAN_0 0x1800
403 #define regMAX_FRAME_A 0x12C0
405 #define regRX_MAC_MCST0 0x1A80
406 #define regRX_MAC_MCST1 0x1A84
407 #define MAC_MCST_NUM 15
408 #define regRX_MCST_HASH0 0x1A00
409 #define MAC_MCST_HASH_NUM 8
411 #define regVPC 0x2300
412 #define regVIC 0x2320
413 #define regVGLB 0x2340
415 #define regCLKPLL 0x5000
418 #define regREVISION 0x6000
419 #define regSCRATCH 0x6004
420 #define regCTRLST 0x6008
421 #define regMAC_ADDR_0 0x600C
422 #define regMAC_ADDR_1 0x6010
423 #define regFRM_LENGTH 0x6014
424 #define regPAUSE_QUANT 0x6018
425 #define regRX_FIFO_SECTION 0x601C
426 #define regTX_FIFO_SECTION 0x6020
427 #define regRX_FULLNESS 0x6024
428 #define regTX_FULLNESS 0x6028
429 #define regHASHTABLE 0x602C
430 #define regMDIO_ST 0x6030
431 #define regMDIO_CTL 0x6034
432 #define regMDIO_DATA 0x6038
433 #define regMDIO_ADDR 0x603C
435 #define regRST_PORT 0x7000
436 #define regDIS_PORT 0x7010
437 #define regRST_QU 0x7020
438 #define regDIS_QU 0x7030
440 #define regCTRLST_TX_ENA 0x0001
441 #define regCTRLST_RX_ENA 0x0002
442 #define regCTRLST_PRM_ENA 0x0010
443 #define regCTRLST_PAD_ENA 0x0020
445 #define regCTRLST_BASE (regCTRLST_PAD_ENA|regCTRLST_PRM_ENA)
447 #define regRX_FLT 0x1400
449 /* TXD TXF RXF RXD CONFIG 0x0000 --- 0x007c*/
450 #define TX_RX_CFG1_BASE 0xffffffff /*0-31 */
451 #define TX_RX_CFG0_BASE 0xfffff000 /*31:12 */
452 #define TX_RX_CFG0_RSVD 0x0ffc /*11:2 */
453 #define TX_RX_CFG0_SIZE 0x0003 /*1:0 */
455 /* TXD TXF RXF RXD WRITE 0x0080 --- 0x00BC */
456 #define TXF_WPTR_WR_PTR 0x7ff8 /*14:3 */
458 /* TXD TXF RXF RXD READ 0x00CO --- 0x00FC */
459 #define TXF_RPTR_RD_PTR 0x7ff8 /*14:3 */
461 #define TXF_WPTR_MASK 0x7ff0 /* last 4 bits are dropped
462 * size is rounded to 16 */
466 #define IMR_INPROG 0x80000000 /*31 */
467 #define IR_LNKCHG1 0x10000000 /*28 */
468 #define IR_LNKCHG0 0x08000000 /*27 */
469 #define IR_GPIO 0x04000000 /*26 */
470 #define IR_RFRSH 0x02000000 /*25 */
471 #define IR_RSVD 0x01000000 /*24 */
472 #define IR_SWI 0x00800000 /*23 */
473 #define IR_RX_FREE_3 0x00400000 /*22 */
474 #define IR_RX_FREE_2 0x00200000 /*21 */
475 #define IR_RX_FREE_1 0x00100000 /*20 */
476 #define IR_RX_FREE_0 0x00080000 /*19 */
477 #define IR_TX_FREE_3 0x00040000 /*18 */
478 #define IR_TX_FREE_2 0x00020000 /*17 */
479 #define IR_TX_FREE_1 0x00010000 /*16 */
480 #define IR_TX_FREE_0 0x00008000 /*15 */
481 #define IR_RX_DESC_3 0x00004000 /*14 */
482 #define IR_RX_DESC_2 0x00002000 /*13 */
483 #define IR_RX_DESC_1 0x00001000 /*12 */
484 #define IR_RX_DESC_0 0x00000800 /*11 */
485 #define IR_PSE 0x00000400 /*10 */
486 #define IR_TMR3 0x00000200 /*9 */
487 #define IR_TMR2 0x00000100 /*8 */
488 #define IR_TMR1 0x00000080 /*7 */
489 #define IR_TMR0 0x00000040 /*6 */
490 #define IR_VNT 0x00000020 /*5 */
491 #define IR_RxFL 0x00000010 /*4 */
492 #define IR_SDPERR 0x00000008 /*3 */
493 #define IR_TR 0x00000004 /*2 */
494 #define IR_PCIE_LINK 0x00000002 /*1 */
495 #define IR_PCIE_TOUT 0x00000001 /*0 */
497 #define IR_EXTRA (IR_RX_FREE_0 | IR_LNKCHG0 | IR_PSE | \
498 IR_TMR0 | IR_PCIE_LINK | IR_PCIE_TOUT)
499 #define IR_RUN (IR_EXTRA | IR_RX_DESC_0 | IR_TX_FREE_0)
500 #define IR_ALL 0xfdfffff7
502 #define IR_LNKCHG0_ofst 27
504 #define GMAC_RX_FILTER_OSEN 0x1000 /* shared OS enable */
505 #define GMAC_RX_FILTER_TXFC 0x0400 /* Tx flow control */
506 #define GMAC_RX_FILTER_RSV0 0x0200 /* reserved */
507 #define GMAC_RX_FILTER_FDA 0x0100 /* filter out direct address */
508 #define GMAC_RX_FILTER_AOF 0x0080 /* accept over run */
509 #define GMAC_RX_FILTER_ACF 0x0040 /* accept control frames */
510 #define GMAC_RX_FILTER_ARUNT 0x0020 /* accept under run */
511 #define GMAC_RX_FILTER_ACRC 0x0010 /* accept crc error */
512 #define GMAC_RX_FILTER_AM 0x0008 /* accept multicast */
513 #define GMAC_RX_FILTER_AB 0x0004 /* accept broadcast */
514 #define GMAC_RX_FILTER_PRM 0x0001 /* [0:1] promiscous mode */
516 #define MAX_FRAME_AB_VAL 0x3fff /* 13:0 */
518 #define CLKPLL_PLLLKD 0x0200 /*9 */
519 #define CLKPLL_RSTEND 0x0100 /*8 */
520 #define CLKPLL_SFTRST 0x0001 /*0 */
522 #define CLKPLL_LKD (CLKPLL_PLLLKD|CLKPLL_RSTEND)
525 * PCI-E Device Control Register (Offset 0x88)
526 * Source: Luxor Data Sheet, 7.1.3.3.3
528 #define PCI_DEV_CTRL_REG 0x88
529 #define GET_DEV_CTRL_MAXPL(x) GET_BITS_SHIFT(x, 3, 5)
530 #define GET_DEV_CTRL_MRRS(x) GET_BITS_SHIFT(x, 3, 12)
533 * PCI-E Link Status Register (Offset 0x92)
534 * Source: Luxor Data Sheet, 7.1.3.3.7
536 #define PCI_LINK_STATUS_REG 0x92
537 #define GET_LINK_STATUS_LANES(x) GET_BITS_SHIFT(x, 6, 4)
539 /* Debugging Macros */
541 #define ERR(fmt, args...) printk(KERN_ERR fmt, ## args)
542 #define DBG2(fmt, args...) \
543 printk(KERN_ERR "%s:%-5d: " fmt, __func__, __LINE__, ## args)
545 #define BDX_ASSERT(x) BUG_ON(x)
550 printk(KERN_ERR "%s:%-5d: ENTER\n", __func__, __LINE__); \
553 #define RET(args...) do { \
554 printk(KERN_ERR "%s:%-5d: RETURN\n", __func__, __LINE__); \
555 return args; } while (0)
557 #define DBG(fmt, args...) \
558 printk(KERN_ERR "%s:%-5d: " fmt, __func__, __LINE__, ## args)
560 #define ENTER do { } while (0)
561 #define RET(args...) return args
562 #define DBG(fmt, args...) do { } while (0)