1 /*
2 * Copyright 2008-2015 Freescale Semiconductor Inc.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 * * Redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer.
8 * * Redistributions in binary form must reproduce the above copyright
9 * notice, this list of conditions and the following disclaimer in the
10 * documentation and/or other materials provided with the distribution.
11 * * Neither the name of Freescale Semiconductor nor the
12 * names of its contributors may be used to endorse or promote products
13 * derived from this software without specific prior written permission.
14 *
15 *
16 * ALTERNATIVELY, this software may be distributed under the terms of the
17 * GNU General Public License ("GPL") as published by the Free Software
18 * Foundation, either version 2 of that License or (at your option) any
19 * later version.
20 *
21 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
22 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
28 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
34
35 #include "fman_tgec.h"
36 #include "fman.h"
37
38 #include <linux/slab.h>
39 #include <linux/bitrev.h>
40 #include <linux/io.h>
41 #include <linux/crc32.h>
42
43 /* Transmit Inter-Packet Gap Length Register (TX_IPG_LENGTH) */
44 #define TGEC_TX_IPG_LENGTH_MASK 0x000003ff
45
46 /* Command and Configuration Register (COMMAND_CONFIG) */
47 #define CMD_CFG_EN_TIMESTAMP 0x00100000
48 #define CMD_CFG_NO_LEN_CHK 0x00020000
49 #define CMD_CFG_PAUSE_IGNORE 0x00000100
50 #define CMF_CFG_CRC_FWD 0x00000040
51 #define CMD_CFG_PROMIS_EN 0x00000010
52 #define CMD_CFG_RX_EN 0x00000002
53 #define CMD_CFG_TX_EN 0x00000001
54
55 /* Interrupt Mask Register (IMASK) */
56 #define TGEC_IMASK_MDIO_SCAN_EVENT 0x00010000
57 #define TGEC_IMASK_MDIO_CMD_CMPL 0x00008000
58 #define TGEC_IMASK_REM_FAULT 0x00004000
59 #define TGEC_IMASK_LOC_FAULT 0x00002000
60 #define TGEC_IMASK_TX_ECC_ER 0x00001000
61 #define TGEC_IMASK_TX_FIFO_UNFL 0x00000800
62 #define TGEC_IMASK_TX_FIFO_OVFL 0x00000400
63 #define TGEC_IMASK_TX_ER 0x00000200
64 #define TGEC_IMASK_RX_FIFO_OVFL 0x00000100
65 #define TGEC_IMASK_RX_ECC_ER 0x00000080
66 #define TGEC_IMASK_RX_JAB_FRM 0x00000040
67 #define TGEC_IMASK_RX_OVRSZ_FRM 0x00000020
68 #define TGEC_IMASK_RX_RUNT_FRM 0x00000010
69 #define TGEC_IMASK_RX_FRAG_FRM 0x00000008
70 #define TGEC_IMASK_RX_LEN_ER 0x00000004
71 #define TGEC_IMASK_RX_CRC_ER 0x00000002
72 #define TGEC_IMASK_RX_ALIGN_ER 0x00000001
73
74 /* Hashtable Control Register (HASHTABLE_CTRL) */
75 #define TGEC_HASH_MCAST_SHIFT 23
76 #define TGEC_HASH_MCAST_EN 0x00000200
77 #define TGEC_HASH_ADR_MSK 0x000001ff
78
79 #define DEFAULT_TX_IPG_LENGTH 12
80 #define DEFAULT_MAX_FRAME_LENGTH 0x600
81 #define DEFAULT_PAUSE_QUANT 0xf000
82
83 /* number of pattern match registers (entries) */
84 #define TGEC_NUM_OF_PADDRS 1
85
86 /* Group address bit indication */
87 #define GROUP_ADDRESS 0x0000010000000000LL
88
89 /* Hash table size (= 32 bits*8 regs) */
90 #define TGEC_HASH_TABLE_SIZE 512
91
92 /* tGEC memory map */
93 struct tgec_regs {
94 u32 tgec_id; /* 0x000 Controller ID */
95 u32 reserved001[1]; /* 0x004 */
96 u32 command_config; /* 0x008 Control and configuration */
97 u32 mac_addr_0; /* 0x00c Lower 32 bits of the MAC adr */
98 u32 mac_addr_1; /* 0x010 Upper 16 bits of the MAC adr */
99 u32 maxfrm; /* 0x014 Maximum frame length */
100 u32 pause_quant; /* 0x018 Pause quanta */
101 u32 rx_fifo_sections; /* 0x01c */
102 u32 tx_fifo_sections; /* 0x020 */
103 u32 rx_fifo_almost_f_e; /* 0x024 */
104 u32 tx_fifo_almost_f_e; /* 0x028 */
105 u32 hashtable_ctrl; /* 0x02c Hash table control */
106 u32 mdio_cfg_status; /* 0x030 */
107 u32 mdio_command; /* 0x034 */
108 u32 mdio_data; /* 0x038 */
109 u32 mdio_regaddr; /* 0x03c */
110 u32 status; /* 0x040 */
111 u32 tx_ipg_len; /* 0x044 Transmitter inter-packet-gap */
112 u32 mac_addr_2; /* 0x048 Lower 32 bits of 2nd MAC adr */
113 u32 mac_addr_3; /* 0x04c Upper 16 bits of 2nd MAC adr */
114 u32 rx_fifo_ptr_rd; /* 0x050 */
115 u32 rx_fifo_ptr_wr; /* 0x054 */
116 u32 tx_fifo_ptr_rd; /* 0x058 */
117 u32 tx_fifo_ptr_wr; /* 0x05c */
118 u32 imask; /* 0x060 Interrupt mask */
119 u32 ievent; /* 0x064 Interrupt event */
120 u32 udp_port; /* 0x068 Defines a UDP Port number */
121 u32 type_1588v2; /* 0x06c Type field for 1588v2 */
122 u32 reserved070[4]; /* 0x070 */
123 /* 10Ge Statistics Counter */
124 u32 tfrm_u; /* 80 aFramesTransmittedOK */
125 u32 tfrm_l; /* 84 aFramesTransmittedOK */
126 u32 rfrm_u; /* 88 aFramesReceivedOK */
127 u32 rfrm_l; /* 8c aFramesReceivedOK */
128 u32 rfcs_u; /* 90 aFrameCheckSequenceErrors */
129 u32 rfcs_l; /* 94 aFrameCheckSequenceErrors */
130 u32 raln_u; /* 98 aAlignmentErrors */
131 u32 raln_l; /* 9c aAlignmentErrors */
132 u32 txpf_u; /* A0 aPAUSEMACCtrlFramesTransmitted */
133 u32 txpf_l; /* A4 aPAUSEMACCtrlFramesTransmitted */
134 u32 rxpf_u; /* A8 aPAUSEMACCtrlFramesReceived */
135 u32 rxpf_l; /* Ac aPAUSEMACCtrlFramesReceived */
136 u32 rlong_u; /* B0 aFrameTooLongErrors */
137 u32 rlong_l; /* B4 aFrameTooLongErrors */
138 u32 rflr_u; /* B8 aInRangeLengthErrors */
139 u32 rflr_l; /* Bc aInRangeLengthErrors */
140 u32 tvlan_u; /* C0 VLANTransmittedOK */
141 u32 tvlan_l; /* C4 VLANTransmittedOK */
142 u32 rvlan_u; /* C8 VLANReceivedOK */
143 u32 rvlan_l; /* Cc VLANReceivedOK */
144 u32 toct_u; /* D0 if_out_octets */
145 u32 toct_l; /* D4 if_out_octets */
146 u32 roct_u; /* D8 if_in_octets */
147 u32 roct_l; /* Dc if_in_octets */
148 u32 ruca_u; /* E0 if_in_ucast_pkts */
149 u32 ruca_l; /* E4 if_in_ucast_pkts */
150 u32 rmca_u; /* E8 ifInMulticastPkts */
151 u32 rmca_l; /* Ec ifInMulticastPkts */
152 u32 rbca_u; /* F0 ifInBroadcastPkts */
153 u32 rbca_l; /* F4 ifInBroadcastPkts */
154 u32 terr_u; /* F8 if_out_errors */
155 u32 terr_l; /* Fc if_out_errors */
156 u32 reserved100[2]; /* 100-108 */
157 u32 tuca_u; /* 108 if_out_ucast_pkts */
158 u32 tuca_l; /* 10c if_out_ucast_pkts */
159 u32 tmca_u; /* 110 ifOutMulticastPkts */
160 u32 tmca_l; /* 114 ifOutMulticastPkts */
161 u32 tbca_u; /* 118 ifOutBroadcastPkts */
162 u32 tbca_l; /* 11c ifOutBroadcastPkts */
163 u32 rdrp_u; /* 120 etherStatsDropEvents */
164 u32 rdrp_l; /* 124 etherStatsDropEvents */
165 u32 reoct_u; /* 128 etherStatsOctets */
166 u32 reoct_l; /* 12c etherStatsOctets */
167 u32 rpkt_u; /* 130 etherStatsPkts */
168 u32 rpkt_l; /* 134 etherStatsPkts */
169 u32 trund_u; /* 138 etherStatsUndersizePkts */
170 u32 trund_l; /* 13c etherStatsUndersizePkts */
171 u32 r64_u; /* 140 etherStatsPkts64Octets */
172 u32 r64_l; /* 144 etherStatsPkts64Octets */
173 u32 r127_u; /* 148 etherStatsPkts65to127Octets */
174 u32 r127_l; /* 14c etherStatsPkts65to127Octets */
175 u32 r255_u; /* 150 etherStatsPkts128to255Octets */
176 u32 r255_l; /* 154 etherStatsPkts128to255Octets */
177 u32 r511_u; /* 158 etherStatsPkts256to511Octets */
178 u32 r511_l; /* 15c etherStatsPkts256to511Octets */
179 u32 r1023_u; /* 160 etherStatsPkts512to1023Octets */
180 u32 r1023_l; /* 164 etherStatsPkts512to1023Octets */
181 u32 r1518_u; /* 168 etherStatsPkts1024to1518Octets */
182 u32 r1518_l; /* 16c etherStatsPkts1024to1518Octets */
183 u32 r1519x_u; /* 170 etherStatsPkts1519toX */
184 u32 r1519x_l; /* 174 etherStatsPkts1519toX */
185 u32 trovr_u; /* 178 etherStatsOversizePkts */
186 u32 trovr_l; /* 17c etherStatsOversizePkts */
187 u32 trjbr_u; /* 180 etherStatsJabbers */
188 u32 trjbr_l; /* 184 etherStatsJabbers */
189 u32 trfrg_u; /* 188 etherStatsFragments */
190 u32 trfrg_l; /* 18C etherStatsFragments */
191 u32 rerr_u; /* 190 if_in_errors */
192 u32 rerr_l; /* 194 if_in_errors */
193 };
194
195 struct tgec_cfg {
196 bool pause_ignore;
197 bool promiscuous_mode_enable;
198 u16 max_frame_length;
199 u16 pause_quant;
200 u32 tx_ipg_length;
201 };
202
203 struct fman_mac {
204 /* Pointer to the memory mapped registers. */
205 struct tgec_regs __iomem *regs;
206 /* MAC address of device; */
207 u64 addr;
208 u16 max_speed;
209 void *dev_id; /* device cookie used by the exception cbs */
210 fman_mac_exception_cb *exception_cb;
211 fman_mac_exception_cb *event_cb;
212 /* pointer to driver's global address hash table */
213 struct eth_hash_t *multicast_addr_hash;
214 /* pointer to driver's individual address hash table */
215 struct eth_hash_t *unicast_addr_hash;
216 u8 mac_id;
217 u32 exceptions;
218 struct tgec_cfg *cfg;
219 void *fm;
220 struct fman_rev_info fm_rev_info;
221 bool allmulti_enabled;
222 };
223
set_mac_address(struct tgec_regs __iomem * regs,const u8 * adr)224 static void set_mac_address(struct tgec_regs __iomem *regs, const u8 *adr)
225 {
226 u32 tmp0, tmp1;
227
228 tmp0 = (u32)(adr[0] | adr[1] << 8 | adr[2] << 16 | adr[3] << 24);
229 tmp1 = (u32)(adr[4] | adr[5] << 8);
230 iowrite32be(tmp0, ®s->mac_addr_0);
231 iowrite32be(tmp1, ®s->mac_addr_1);
232 }
233
set_dflts(struct tgec_cfg * cfg)234 static void set_dflts(struct tgec_cfg *cfg)
235 {
236 cfg->promiscuous_mode_enable = false;
237 cfg->pause_ignore = false;
238 cfg->tx_ipg_length = DEFAULT_TX_IPG_LENGTH;
239 cfg->max_frame_length = DEFAULT_MAX_FRAME_LENGTH;
240 cfg->pause_quant = DEFAULT_PAUSE_QUANT;
241 }
242
init(struct tgec_regs __iomem * regs,struct tgec_cfg * cfg,u32 exception_mask)243 static int init(struct tgec_regs __iomem *regs, struct tgec_cfg *cfg,
244 u32 exception_mask)
245 {
246 u32 tmp;
247
248 /* Config */
249 tmp = CMF_CFG_CRC_FWD;
250 if (cfg->promiscuous_mode_enable)
251 tmp |= CMD_CFG_PROMIS_EN;
252 if (cfg->pause_ignore)
253 tmp |= CMD_CFG_PAUSE_IGNORE;
254 /* Payload length check disable */
255 tmp |= CMD_CFG_NO_LEN_CHK;
256 iowrite32be(tmp, ®s->command_config);
257
258 /* Max Frame Length */
259 iowrite32be((u32)cfg->max_frame_length, ®s->maxfrm);
260 /* Pause Time */
261 iowrite32be(cfg->pause_quant, ®s->pause_quant);
262
263 /* clear all pending events and set-up interrupts */
264 iowrite32be(0xffffffff, ®s->ievent);
265 iowrite32be(ioread32be(®s->imask) | exception_mask, ®s->imask);
266
267 return 0;
268 }
269
check_init_parameters(struct fman_mac * tgec)270 static int check_init_parameters(struct fman_mac *tgec)
271 {
272 if (tgec->max_speed < SPEED_10000) {
273 pr_err("10G MAC driver only support 10G speed\n");
274 return -EINVAL;
275 }
276 if (!tgec->exception_cb) {
277 pr_err("uninitialized exception_cb\n");
278 return -EINVAL;
279 }
280 if (!tgec->event_cb) {
281 pr_err("uninitialized event_cb\n");
282 return -EINVAL;
283 }
284
285 return 0;
286 }
287
get_exception_flag(enum fman_mac_exceptions exception)288 static int get_exception_flag(enum fman_mac_exceptions exception)
289 {
290 u32 bit_mask;
291
292 switch (exception) {
293 case FM_MAC_EX_10G_MDIO_SCAN_EVENT:
294 bit_mask = TGEC_IMASK_MDIO_SCAN_EVENT;
295 break;
296 case FM_MAC_EX_10G_MDIO_CMD_CMPL:
297 bit_mask = TGEC_IMASK_MDIO_CMD_CMPL;
298 break;
299 case FM_MAC_EX_10G_REM_FAULT:
300 bit_mask = TGEC_IMASK_REM_FAULT;
301 break;
302 case FM_MAC_EX_10G_LOC_FAULT:
303 bit_mask = TGEC_IMASK_LOC_FAULT;
304 break;
305 case FM_MAC_EX_10G_TX_ECC_ER:
306 bit_mask = TGEC_IMASK_TX_ECC_ER;
307 break;
308 case FM_MAC_EX_10G_TX_FIFO_UNFL:
309 bit_mask = TGEC_IMASK_TX_FIFO_UNFL;
310 break;
311 case FM_MAC_EX_10G_TX_FIFO_OVFL:
312 bit_mask = TGEC_IMASK_TX_FIFO_OVFL;
313 break;
314 case FM_MAC_EX_10G_TX_ER:
315 bit_mask = TGEC_IMASK_TX_ER;
316 break;
317 case FM_MAC_EX_10G_RX_FIFO_OVFL:
318 bit_mask = TGEC_IMASK_RX_FIFO_OVFL;
319 break;
320 case FM_MAC_EX_10G_RX_ECC_ER:
321 bit_mask = TGEC_IMASK_RX_ECC_ER;
322 break;
323 case FM_MAC_EX_10G_RX_JAB_FRM:
324 bit_mask = TGEC_IMASK_RX_JAB_FRM;
325 break;
326 case FM_MAC_EX_10G_RX_OVRSZ_FRM:
327 bit_mask = TGEC_IMASK_RX_OVRSZ_FRM;
328 break;
329 case FM_MAC_EX_10G_RX_RUNT_FRM:
330 bit_mask = TGEC_IMASK_RX_RUNT_FRM;
331 break;
332 case FM_MAC_EX_10G_RX_FRAG_FRM:
333 bit_mask = TGEC_IMASK_RX_FRAG_FRM;
334 break;
335 case FM_MAC_EX_10G_RX_LEN_ER:
336 bit_mask = TGEC_IMASK_RX_LEN_ER;
337 break;
338 case FM_MAC_EX_10G_RX_CRC_ER:
339 bit_mask = TGEC_IMASK_RX_CRC_ER;
340 break;
341 case FM_MAC_EX_10G_RX_ALIGN_ER:
342 bit_mask = TGEC_IMASK_RX_ALIGN_ER;
343 break;
344 default:
345 bit_mask = 0;
346 break;
347 }
348
349 return bit_mask;
350 }
351
tgec_err_exception(void * handle)352 static void tgec_err_exception(void *handle)
353 {
354 struct fman_mac *tgec = (struct fman_mac *)handle;
355 struct tgec_regs __iomem *regs = tgec->regs;
356 u32 event;
357
358 /* do not handle MDIO events */
359 event = ioread32be(®s->ievent) &
360 ~(TGEC_IMASK_MDIO_SCAN_EVENT |
361 TGEC_IMASK_MDIO_CMD_CMPL);
362
363 event &= ioread32be(®s->imask);
364
365 iowrite32be(event, ®s->ievent);
366
367 if (event & TGEC_IMASK_REM_FAULT)
368 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_REM_FAULT);
369 if (event & TGEC_IMASK_LOC_FAULT)
370 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_LOC_FAULT);
371 if (event & TGEC_IMASK_TX_ECC_ER)
372 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_ECC_ER);
373 if (event & TGEC_IMASK_TX_FIFO_UNFL)
374 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_FIFO_UNFL);
375 if (event & TGEC_IMASK_TX_FIFO_OVFL)
376 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_FIFO_OVFL);
377 if (event & TGEC_IMASK_TX_ER)
378 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_ER);
379 if (event & TGEC_IMASK_RX_FIFO_OVFL)
380 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_FIFO_OVFL);
381 if (event & TGEC_IMASK_RX_ECC_ER)
382 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_ECC_ER);
383 if (event & TGEC_IMASK_RX_JAB_FRM)
384 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_JAB_FRM);
385 if (event & TGEC_IMASK_RX_OVRSZ_FRM)
386 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_OVRSZ_FRM);
387 if (event & TGEC_IMASK_RX_RUNT_FRM)
388 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_RUNT_FRM);
389 if (event & TGEC_IMASK_RX_FRAG_FRM)
390 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_FRAG_FRM);
391 if (event & TGEC_IMASK_RX_LEN_ER)
392 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_LEN_ER);
393 if (event & TGEC_IMASK_RX_CRC_ER)
394 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_CRC_ER);
395 if (event & TGEC_IMASK_RX_ALIGN_ER)
396 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_ALIGN_ER);
397 }
398
free_init_resources(struct fman_mac * tgec)399 static void free_init_resources(struct fman_mac *tgec)
400 {
401 fman_unregister_intr(tgec->fm, FMAN_MOD_MAC, tgec->mac_id,
402 FMAN_INTR_TYPE_ERR);
403
404 /* release the driver's group hash table */
405 free_hash_table(tgec->multicast_addr_hash);
406 tgec->multicast_addr_hash = NULL;
407
408 /* release the driver's individual hash table */
409 free_hash_table(tgec->unicast_addr_hash);
410 tgec->unicast_addr_hash = NULL;
411 }
412
is_init_done(struct tgec_cfg * cfg)413 static bool is_init_done(struct tgec_cfg *cfg)
414 {
415 /* Checks if tGEC driver parameters were initialized */
416 if (!cfg)
417 return true;
418
419 return false;
420 }
421
tgec_enable(struct fman_mac * tgec,enum comm_mode mode)422 int tgec_enable(struct fman_mac *tgec, enum comm_mode mode)
423 {
424 struct tgec_regs __iomem *regs = tgec->regs;
425 u32 tmp;
426
427 if (!is_init_done(tgec->cfg))
428 return -EINVAL;
429
430 tmp = ioread32be(®s->command_config);
431 if (mode & COMM_MODE_RX)
432 tmp |= CMD_CFG_RX_EN;
433 if (mode & COMM_MODE_TX)
434 tmp |= CMD_CFG_TX_EN;
435 iowrite32be(tmp, ®s->command_config);
436
437 return 0;
438 }
439
tgec_disable(struct fman_mac * tgec,enum comm_mode mode)440 int tgec_disable(struct fman_mac *tgec, enum comm_mode mode)
441 {
442 struct tgec_regs __iomem *regs = tgec->regs;
443 u32 tmp;
444
445 if (!is_init_done(tgec->cfg))
446 return -EINVAL;
447
448 tmp = ioread32be(®s->command_config);
449 if (mode & COMM_MODE_RX)
450 tmp &= ~CMD_CFG_RX_EN;
451 if (mode & COMM_MODE_TX)
452 tmp &= ~CMD_CFG_TX_EN;
453 iowrite32be(tmp, ®s->command_config);
454
455 return 0;
456 }
457
tgec_set_promiscuous(struct fman_mac * tgec,bool new_val)458 int tgec_set_promiscuous(struct fman_mac *tgec, bool new_val)
459 {
460 struct tgec_regs __iomem *regs = tgec->regs;
461 u32 tmp;
462
463 if (!is_init_done(tgec->cfg))
464 return -EINVAL;
465
466 tmp = ioread32be(®s->command_config);
467 if (new_val)
468 tmp |= CMD_CFG_PROMIS_EN;
469 else
470 tmp &= ~CMD_CFG_PROMIS_EN;
471 iowrite32be(tmp, ®s->command_config);
472
473 return 0;
474 }
475
tgec_cfg_max_frame_len(struct fman_mac * tgec,u16 new_val)476 int tgec_cfg_max_frame_len(struct fman_mac *tgec, u16 new_val)
477 {
478 if (is_init_done(tgec->cfg))
479 return -EINVAL;
480
481 tgec->cfg->max_frame_length = new_val;
482
483 return 0;
484 }
485
tgec_set_tx_pause_frames(struct fman_mac * tgec,u8 __maybe_unused priority,u16 pause_time,u16 __maybe_unused thresh_time)486 int tgec_set_tx_pause_frames(struct fman_mac *tgec, u8 __maybe_unused priority,
487 u16 pause_time, u16 __maybe_unused thresh_time)
488 {
489 struct tgec_regs __iomem *regs = tgec->regs;
490
491 if (!is_init_done(tgec->cfg))
492 return -EINVAL;
493
494 iowrite32be((u32)pause_time, ®s->pause_quant);
495
496 return 0;
497 }
498
tgec_accept_rx_pause_frames(struct fman_mac * tgec,bool en)499 int tgec_accept_rx_pause_frames(struct fman_mac *tgec, bool en)
500 {
501 struct tgec_regs __iomem *regs = tgec->regs;
502 u32 tmp;
503
504 if (!is_init_done(tgec->cfg))
505 return -EINVAL;
506
507 tmp = ioread32be(®s->command_config);
508 if (!en)
509 tmp |= CMD_CFG_PAUSE_IGNORE;
510 else
511 tmp &= ~CMD_CFG_PAUSE_IGNORE;
512 iowrite32be(tmp, ®s->command_config);
513
514 return 0;
515 }
516
tgec_modify_mac_address(struct fman_mac * tgec,const enet_addr_t * p_enet_addr)517 int tgec_modify_mac_address(struct fman_mac *tgec, const enet_addr_t *p_enet_addr)
518 {
519 if (!is_init_done(tgec->cfg))
520 return -EINVAL;
521
522 tgec->addr = ENET_ADDR_TO_UINT64(*p_enet_addr);
523 set_mac_address(tgec->regs, (const u8 *)(*p_enet_addr));
524
525 return 0;
526 }
527
tgec_add_hash_mac_address(struct fman_mac * tgec,enet_addr_t * eth_addr)528 int tgec_add_hash_mac_address(struct fman_mac *tgec, enet_addr_t *eth_addr)
529 {
530 struct tgec_regs __iomem *regs = tgec->regs;
531 struct eth_hash_entry *hash_entry;
532 u32 crc = 0xFFFFFFFF, hash;
533 u64 addr;
534
535 if (!is_init_done(tgec->cfg))
536 return -EINVAL;
537
538 addr = ENET_ADDR_TO_UINT64(*eth_addr);
539
540 if (!(addr & GROUP_ADDRESS)) {
541 /* Unicast addresses not supported in hash */
542 pr_err("Unicast Address\n");
543 return -EINVAL;
544 }
545 /* CRC calculation */
546 crc = crc32_le(crc, (u8 *)eth_addr, ETH_ALEN);
547 crc = bitrev32(crc);
548 /* Take 9 MSB bits */
549 hash = (crc >> TGEC_HASH_MCAST_SHIFT) & TGEC_HASH_ADR_MSK;
550
551 /* Create element to be added to the driver hash table */
552 hash_entry = kmalloc(sizeof(*hash_entry), GFP_ATOMIC);
553 if (!hash_entry)
554 return -ENOMEM;
555 hash_entry->addr = addr;
556 INIT_LIST_HEAD(&hash_entry->node);
557
558 list_add_tail(&hash_entry->node,
559 &tgec->multicast_addr_hash->lsts[hash]);
560 iowrite32be((hash | TGEC_HASH_MCAST_EN), ®s->hashtable_ctrl);
561
562 return 0;
563 }
564
tgec_set_allmulti(struct fman_mac * tgec,bool enable)565 int tgec_set_allmulti(struct fman_mac *tgec, bool enable)
566 {
567 u32 entry;
568 struct tgec_regs __iomem *regs = tgec->regs;
569
570 if (!is_init_done(tgec->cfg))
571 return -EINVAL;
572
573 if (enable) {
574 for (entry = 0; entry < TGEC_HASH_TABLE_SIZE; entry++)
575 iowrite32be(entry | TGEC_HASH_MCAST_EN,
576 ®s->hashtable_ctrl);
577 } else {
578 for (entry = 0; entry < TGEC_HASH_TABLE_SIZE; entry++)
579 iowrite32be(entry & ~TGEC_HASH_MCAST_EN,
580 ®s->hashtable_ctrl);
581 }
582
583 tgec->allmulti_enabled = enable;
584
585 return 0;
586 }
587
tgec_set_tstamp(struct fman_mac * tgec,bool enable)588 int tgec_set_tstamp(struct fman_mac *tgec, bool enable)
589 {
590 struct tgec_regs __iomem *regs = tgec->regs;
591 u32 tmp;
592
593 if (!is_init_done(tgec->cfg))
594 return -EINVAL;
595
596 tmp = ioread32be(®s->command_config);
597
598 if (enable)
599 tmp |= CMD_CFG_EN_TIMESTAMP;
600 else
601 tmp &= ~CMD_CFG_EN_TIMESTAMP;
602
603 iowrite32be(tmp, ®s->command_config);
604
605 return 0;
606 }
607
tgec_del_hash_mac_address(struct fman_mac * tgec,enet_addr_t * eth_addr)608 int tgec_del_hash_mac_address(struct fman_mac *tgec, enet_addr_t *eth_addr)
609 {
610 struct tgec_regs __iomem *regs = tgec->regs;
611 struct eth_hash_entry *hash_entry = NULL;
612 struct list_head *pos;
613 u32 crc = 0xFFFFFFFF, hash;
614 u64 addr;
615
616 if (!is_init_done(tgec->cfg))
617 return -EINVAL;
618
619 addr = ((*(u64 *)eth_addr) >> 16);
620
621 /* CRC calculation */
622 crc = crc32_le(crc, (u8 *)eth_addr, ETH_ALEN);
623 crc = bitrev32(crc);
624 /* Take 9 MSB bits */
625 hash = (crc >> TGEC_HASH_MCAST_SHIFT) & TGEC_HASH_ADR_MSK;
626
627 list_for_each(pos, &tgec->multicast_addr_hash->lsts[hash]) {
628 hash_entry = ETH_HASH_ENTRY_OBJ(pos);
629 if (hash_entry && hash_entry->addr == addr) {
630 list_del_init(&hash_entry->node);
631 kfree(hash_entry);
632 break;
633 }
634 }
635
636 if (!tgec->allmulti_enabled) {
637 if (list_empty(&tgec->multicast_addr_hash->lsts[hash]))
638 iowrite32be((hash & ~TGEC_HASH_MCAST_EN),
639 ®s->hashtable_ctrl);
640 }
641
642 return 0;
643 }
644
tgec_get_version(struct fman_mac * tgec,u32 * mac_version)645 int tgec_get_version(struct fman_mac *tgec, u32 *mac_version)
646 {
647 struct tgec_regs __iomem *regs = tgec->regs;
648
649 if (!is_init_done(tgec->cfg))
650 return -EINVAL;
651
652 *mac_version = ioread32be(®s->tgec_id);
653
654 return 0;
655 }
656
tgec_set_exception(struct fman_mac * tgec,enum fman_mac_exceptions exception,bool enable)657 int tgec_set_exception(struct fman_mac *tgec,
658 enum fman_mac_exceptions exception, bool enable)
659 {
660 struct tgec_regs __iomem *regs = tgec->regs;
661 u32 bit_mask = 0;
662
663 if (!is_init_done(tgec->cfg))
664 return -EINVAL;
665
666 bit_mask = get_exception_flag(exception);
667 if (bit_mask) {
668 if (enable)
669 tgec->exceptions |= bit_mask;
670 else
671 tgec->exceptions &= ~bit_mask;
672 } else {
673 pr_err("Undefined exception\n");
674 return -EINVAL;
675 }
676 if (enable)
677 iowrite32be(ioread32be(®s->imask) | bit_mask, ®s->imask);
678 else
679 iowrite32be(ioread32be(®s->imask) & ~bit_mask, ®s->imask);
680
681 return 0;
682 }
683
tgec_init(struct fman_mac * tgec)684 int tgec_init(struct fman_mac *tgec)
685 {
686 struct tgec_cfg *cfg;
687 enet_addr_t eth_addr;
688 int err;
689
690 if (is_init_done(tgec->cfg))
691 return -EINVAL;
692
693 if (DEFAULT_RESET_ON_INIT &&
694 (fman_reset_mac(tgec->fm, tgec->mac_id) != 0)) {
695 pr_err("Can't reset MAC!\n");
696 return -EINVAL;
697 }
698
699 err = check_init_parameters(tgec);
700 if (err)
701 return err;
702
703 cfg = tgec->cfg;
704
705 if (tgec->addr) {
706 MAKE_ENET_ADDR_FROM_UINT64(tgec->addr, eth_addr);
707 set_mac_address(tgec->regs, (const u8 *)eth_addr);
708 }
709
710 /* interrupts */
711 /* FM_10G_REM_N_LCL_FLT_EX_10GMAC_ERRATA_SW005 Errata workaround */
712 if (tgec->fm_rev_info.major <= 2)
713 tgec->exceptions &= ~(TGEC_IMASK_REM_FAULT |
714 TGEC_IMASK_LOC_FAULT);
715
716 err = init(tgec->regs, cfg, tgec->exceptions);
717 if (err) {
718 free_init_resources(tgec);
719 pr_err("TGEC version doesn't support this i/f mode\n");
720 return err;
721 }
722
723 /* Max Frame Length */
724 err = fman_set_mac_max_frame(tgec->fm, tgec->mac_id,
725 cfg->max_frame_length);
726 if (err) {
727 pr_err("Setting max frame length FAILED\n");
728 free_init_resources(tgec);
729 return -EINVAL;
730 }
731
732 /* FM_TX_FIFO_CORRUPTION_ERRATA_10GMAC_A007 Errata workaround */
733 if (tgec->fm_rev_info.major == 2) {
734 struct tgec_regs __iomem *regs = tgec->regs;
735 u32 tmp;
736
737 /* restore the default tx ipg Length */
738 tmp = (ioread32be(®s->tx_ipg_len) &
739 ~TGEC_TX_IPG_LENGTH_MASK) | 12;
740
741 iowrite32be(tmp, ®s->tx_ipg_len);
742 }
743
744 tgec->multicast_addr_hash = alloc_hash_table(TGEC_HASH_TABLE_SIZE);
745 if (!tgec->multicast_addr_hash) {
746 free_init_resources(tgec);
747 pr_err("allocation hash table is FAILED\n");
748 return -ENOMEM;
749 }
750
751 tgec->unicast_addr_hash = alloc_hash_table(TGEC_HASH_TABLE_SIZE);
752 if (!tgec->unicast_addr_hash) {
753 free_init_resources(tgec);
754 pr_err("allocation hash table is FAILED\n");
755 return -ENOMEM;
756 }
757
758 fman_register_intr(tgec->fm, FMAN_MOD_MAC, tgec->mac_id,
759 FMAN_INTR_TYPE_ERR, tgec_err_exception, tgec);
760
761 kfree(cfg);
762 tgec->cfg = NULL;
763
764 return 0;
765 }
766
tgec_free(struct fman_mac * tgec)767 int tgec_free(struct fman_mac *tgec)
768 {
769 free_init_resources(tgec);
770
771 kfree(tgec->cfg);
772 kfree(tgec);
773
774 return 0;
775 }
776
tgec_config(struct fman_mac_params * params)777 struct fman_mac *tgec_config(struct fman_mac_params *params)
778 {
779 struct fman_mac *tgec;
780 struct tgec_cfg *cfg;
781 void __iomem *base_addr;
782
783 base_addr = params->base_addr;
784 /* allocate memory for the UCC GETH data structure. */
785 tgec = kzalloc(sizeof(*tgec), GFP_KERNEL);
786 if (!tgec)
787 return NULL;
788
789 /* allocate memory for the 10G MAC driver parameters data structure. */
790 cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
791 if (!cfg) {
792 tgec_free(tgec);
793 return NULL;
794 }
795
796 /* Plant parameter structure pointer */
797 tgec->cfg = cfg;
798
799 set_dflts(cfg);
800
801 tgec->regs = base_addr;
802 tgec->addr = ENET_ADDR_TO_UINT64(params->addr);
803 tgec->max_speed = params->max_speed;
804 tgec->mac_id = params->mac_id;
805 tgec->exceptions = (TGEC_IMASK_MDIO_SCAN_EVENT |
806 TGEC_IMASK_REM_FAULT |
807 TGEC_IMASK_LOC_FAULT |
808 TGEC_IMASK_TX_ECC_ER |
809 TGEC_IMASK_TX_FIFO_UNFL |
810 TGEC_IMASK_TX_FIFO_OVFL |
811 TGEC_IMASK_TX_ER |
812 TGEC_IMASK_RX_FIFO_OVFL |
813 TGEC_IMASK_RX_ECC_ER |
814 TGEC_IMASK_RX_JAB_FRM |
815 TGEC_IMASK_RX_OVRSZ_FRM |
816 TGEC_IMASK_RX_RUNT_FRM |
817 TGEC_IMASK_RX_FRAG_FRM |
818 TGEC_IMASK_RX_CRC_ER |
819 TGEC_IMASK_RX_ALIGN_ER);
820 tgec->exception_cb = params->exception_cb;
821 tgec->event_cb = params->event_cb;
822 tgec->dev_id = params->dev_id;
823 tgec->fm = params->fm;
824
825 /* Save FMan revision */
826 fman_get_revision(tgec->fm, &tgec->fm_rev_info);
827
828 return tgec;
829 }
830