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Merge tag 'nfsd-4.7' of git://linux-nfs.org/~bfields/linux
[linux-2.6-block.git] / drivers / net / ethernet / freescale / fman / fman_tgec.c
CommitLineData
57ba4c9b
IL		 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_NO_LEN_CHK 0x00020000
48#define CMD_CFG_PAUSE_IGNORE 0x00000100
49#define CMF_CFG_CRC_FWD 0x00000040
50#define CMD_CFG_PROMIS_EN 0x00000010
51#define CMD_CFG_RX_EN 0x00000002
52#define CMD_CFG_TX_EN 0x00000001
53
54/* Interrupt Mask Register (IMASK) */
55#define TGEC_IMASK_MDIO_SCAN_EVENT 0x00010000
56#define TGEC_IMASK_MDIO_CMD_CMPL 0x00008000
57#define TGEC_IMASK_REM_FAULT 0x00004000
58#define TGEC_IMASK_LOC_FAULT 0x00002000
59#define TGEC_IMASK_TX_ECC_ER 0x00001000
60#define TGEC_IMASK_TX_FIFO_UNFL 0x00000800
61#define TGEC_IMASK_TX_FIFO_OVFL 0x00000400
62#define TGEC_IMASK_TX_ER 0x00000200
63#define TGEC_IMASK_RX_FIFO_OVFL 0x00000100
64#define TGEC_IMASK_RX_ECC_ER 0x00000080
65#define TGEC_IMASK_RX_JAB_FRM 0x00000040
66#define TGEC_IMASK_RX_OVRSZ_FRM 0x00000020
67#define TGEC_IMASK_RX_RUNT_FRM 0x00000010
68#define TGEC_IMASK_RX_FRAG_FRM 0x00000008
69#define TGEC_IMASK_RX_LEN_ER 0x00000004
70#define TGEC_IMASK_RX_CRC_ER 0x00000002
71#define TGEC_IMASK_RX_ALIGN_ER 0x00000001
72
73/* Hashtable Control Register (HASHTABLE_CTRL) */
74#define TGEC_HASH_MCAST_SHIFT 23
75#define TGEC_HASH_MCAST_EN 0x00000200
76#define TGEC_HASH_ADR_MSK 0x000001ff
77
78#define DEFAULT_TX_IPG_LENGTH 12
79#define DEFAULT_MAX_FRAME_LENGTH 0x600
80#define DEFAULT_PAUSE_QUANT 0xf000
81
82/* number of pattern match registers (entries) */
83#define TGEC_NUM_OF_PADDRS 1
84
85/* Group address bit indication */
86#define GROUP_ADDRESS 0x0000010000000000LL
87
88/* Hash table size (= 32 bits*8 regs) */
89#define TGEC_HASH_TABLE_SIZE 512
90
91/* tGEC memory map */
92struct tgec_regs {
93 u32 tgec_id; /* 0x000 Controller ID */
94 u32 reserved001[1]; /* 0x004 */
95 u32 command_config; /* 0x008 Control and configuration */
96 u32 mac_addr_0; /* 0x00c Lower 32 bits of the MAC adr */
97 u32 mac_addr_1; /* 0x010 Upper 16 bits of the MAC adr */
98 u32 maxfrm; /* 0x014 Maximum frame length */
99 u32 pause_quant; /* 0x018 Pause quanta */
100 u32 rx_fifo_sections; /* 0x01c */
101 u32 tx_fifo_sections; /* 0x020 */
102 u32 rx_fifo_almost_f_e; /* 0x024 */
103 u32 tx_fifo_almost_f_e; /* 0x028 */
104 u32 hashtable_ctrl; /* 0x02c Hash table control */
105 u32 mdio_cfg_status; /* 0x030 */
106 u32 mdio_command; /* 0x034 */
107 u32 mdio_data; /* 0x038 */
108 u32 mdio_regaddr; /* 0x03c */
109 u32 status; /* 0x040 */
110 u32 tx_ipg_len; /* 0x044 Transmitter inter-packet-gap */
111 u32 mac_addr_2; /* 0x048 Lower 32 bits of 2nd MAC adr */
112 u32 mac_addr_3; /* 0x04c Upper 16 bits of 2nd MAC adr */
113 u32 rx_fifo_ptr_rd; /* 0x050 */
114 u32 rx_fifo_ptr_wr; /* 0x054 */
115 u32 tx_fifo_ptr_rd; /* 0x058 */
116 u32 tx_fifo_ptr_wr; /* 0x05c */
117 u32 imask; /* 0x060 Interrupt mask */
118 u32 ievent; /* 0x064 Interrupt event */
119 u32 udp_port; /* 0x068 Defines a UDP Port number */
120 u32 type_1588v2; /* 0x06c Type field for 1588v2 */
121 u32 reserved070[4]; /* 0x070 */
122 /* 10Ge Statistics Counter */
123 u32 tfrm_u; /* 80 aFramesTransmittedOK */
124 u32 tfrm_l; /* 84 aFramesTransmittedOK */
125 u32 rfrm_u; /* 88 aFramesReceivedOK */
126 u32 rfrm_l; /* 8c aFramesReceivedOK */
127 u32 rfcs_u; /* 90 aFrameCheckSequenceErrors */
128 u32 rfcs_l; /* 94 aFrameCheckSequenceErrors */
129 u32 raln_u; /* 98 aAlignmentErrors */
130 u32 raln_l; /* 9c aAlignmentErrors */
131 u32 txpf_u; /* A0 aPAUSEMACCtrlFramesTransmitted */
132 u32 txpf_l; /* A4 aPAUSEMACCtrlFramesTransmitted */
133 u32 rxpf_u; /* A8 aPAUSEMACCtrlFramesReceived */
134 u32 rxpf_l; /* Ac aPAUSEMACCtrlFramesReceived */
135 u32 rlong_u; /* B0 aFrameTooLongErrors */
136 u32 rlong_l; /* B4 aFrameTooLongErrors */
137 u32 rflr_u; /* B8 aInRangeLengthErrors */
138 u32 rflr_l; /* Bc aInRangeLengthErrors */
139 u32 tvlan_u; /* C0 VLANTransmittedOK */
140 u32 tvlan_l; /* C4 VLANTransmittedOK */
141 u32 rvlan_u; /* C8 VLANReceivedOK */
142 u32 rvlan_l; /* Cc VLANReceivedOK */
143 u32 toct_u; /* D0 if_out_octets */
144 u32 toct_l; /* D4 if_out_octets */
145 u32 roct_u; /* D8 if_in_octets */
146 u32 roct_l; /* Dc if_in_octets */
147 u32 ruca_u; /* E0 if_in_ucast_pkts */
148 u32 ruca_l; /* E4 if_in_ucast_pkts */
149 u32 rmca_u; /* E8 ifInMulticastPkts */
150 u32 rmca_l; /* Ec ifInMulticastPkts */
151 u32 rbca_u; /* F0 ifInBroadcastPkts */
152 u32 rbca_l; /* F4 ifInBroadcastPkts */
153 u32 terr_u; /* F8 if_out_errors */
154 u32 terr_l; /* Fc if_out_errors */
155 u32 reserved100[2]; /* 100-108 */
156 u32 tuca_u; /* 108 if_out_ucast_pkts */
157 u32 tuca_l; /* 10c if_out_ucast_pkts */
158 u32 tmca_u; /* 110 ifOutMulticastPkts */
159 u32 tmca_l; /* 114 ifOutMulticastPkts */
160 u32 tbca_u; /* 118 ifOutBroadcastPkts */
161 u32 tbca_l; /* 11c ifOutBroadcastPkts */
162 u32 rdrp_u; /* 120 etherStatsDropEvents */
163 u32 rdrp_l; /* 124 etherStatsDropEvents */
164 u32 reoct_u; /* 128 etherStatsOctets */
165 u32 reoct_l; /* 12c etherStatsOctets */
166 u32 rpkt_u; /* 130 etherStatsPkts */
167 u32 rpkt_l; /* 134 etherStatsPkts */
168 u32 trund_u; /* 138 etherStatsUndersizePkts */
169 u32 trund_l; /* 13c etherStatsUndersizePkts */
170 u32 r64_u; /* 140 etherStatsPkts64Octets */
171 u32 r64_l; /* 144 etherStatsPkts64Octets */
172 u32 r127_u; /* 148 etherStatsPkts65to127Octets */
173 u32 r127_l; /* 14c etherStatsPkts65to127Octets */
174 u32 r255_u; /* 150 etherStatsPkts128to255Octets */
175 u32 r255_l; /* 154 etherStatsPkts128to255Octets */
176 u32 r511_u; /* 158 etherStatsPkts256to511Octets */
177 u32 r511_l; /* 15c etherStatsPkts256to511Octets */
178 u32 r1023_u; /* 160 etherStatsPkts512to1023Octets */
179 u32 r1023_l; /* 164 etherStatsPkts512to1023Octets */
180 u32 r1518_u; /* 168 etherStatsPkts1024to1518Octets */
181 u32 r1518_l; /* 16c etherStatsPkts1024to1518Octets */
182 u32 r1519x_u; /* 170 etherStatsPkts1519toX */
183 u32 r1519x_l; /* 174 etherStatsPkts1519toX */
184 u32 trovr_u; /* 178 etherStatsOversizePkts */
185 u32 trovr_l; /* 17c etherStatsOversizePkts */
186 u32 trjbr_u; /* 180 etherStatsJabbers */
187 u32 trjbr_l; /* 184 etherStatsJabbers */
188 u32 trfrg_u; /* 188 etherStatsFragments */
189 u32 trfrg_l; /* 18C etherStatsFragments */
190 u32 rerr_u; /* 190 if_in_errors */
191 u32 rerr_l; /* 194 if_in_errors */
192};
193
194struct tgec_cfg {
195 bool pause_ignore;
196 bool promiscuous_mode_enable;
197 u16 max_frame_length;
198 u16 pause_quant;
199 u32 tx_ipg_length;
200};
201
202struct fman_mac {
203 /* Pointer to the memory mapped registers. */
204 struct tgec_regs __iomem *regs;
205 /* MAC address of device; */
206 u64 addr;
207 u16 max_speed;
208 void *dev_id; /* device cookie used by the exception cbs */
209 fman_mac_exception_cb *exception_cb;
210 fman_mac_exception_cb *event_cb;
211 /* pointer to driver's global address hash table */
212 struct eth_hash_t *multicast_addr_hash;
213 /* pointer to driver's individual address hash table */
214 struct eth_hash_t *unicast_addr_hash;
215 u8 mac_id;
216 u32 exceptions;
217 struct tgec_cfg *cfg;
218 void *fm;
219 struct fman_rev_info fm_rev_info;
220};
221
222static void set_mac_address(struct tgec_regs __iomem *regs, u8 *adr)
223{
224 u32 tmp0, tmp1;
225
226 tmp0 = (u32)(adr[0] | adr[1] << 8 | adr[2] << 16 | adr[3] << 24);
227 tmp1 = (u32)(adr[4] | adr[5] << 8);
228 iowrite32be(tmp0, &regs->mac_addr_0);
229 iowrite32be(tmp1, &regs->mac_addr_1);
230}
231
232static void set_dflts(struct tgec_cfg *cfg)
233{
234 cfg->promiscuous_mode_enable = false;
235 cfg->pause_ignore = false;
236 cfg->tx_ipg_length = DEFAULT_TX_IPG_LENGTH;
237 cfg->max_frame_length = DEFAULT_MAX_FRAME_LENGTH;
238 cfg->pause_quant = DEFAULT_PAUSE_QUANT;
239}
240
241static int init(struct tgec_regs __iomem *regs, struct tgec_cfg *cfg,
242 u32 exception_mask)
243{
244 u32 tmp;
245
246 /* Config */
247 tmp = CMF_CFG_CRC_FWD;
248 if (cfg->promiscuous_mode_enable)
249 tmp |= CMD_CFG_PROMIS_EN;
250 if (cfg->pause_ignore)
251 tmp |= CMD_CFG_PAUSE_IGNORE;
252 /* Payload length check disable */
253 tmp |= CMD_CFG_NO_LEN_CHK;
254 iowrite32be(tmp, &regs->command_config);
255
256 /* Max Frame Length */
257 iowrite32be((u32)cfg->max_frame_length, &regs->maxfrm);
258 /* Pause Time */
259 iowrite32be(cfg->pause_quant, &regs->pause_quant);
260
261 /* clear all pending events and set-up interrupts */
262 iowrite32be(0xffffffff, &regs->ievent);
263 iowrite32be(ioread32be(&regs->imask) | exception_mask, &regs->imask);
264
265 return 0;
266}
267
268static int check_init_parameters(struct fman_mac *tgec)
269{
270 if (tgec->max_speed < SPEED_10000) {
271 pr_err("10G MAC driver only support 10G speed\n");
272 return -EINVAL;
273 }
274 if (tgec->addr == 0) {
275 pr_err("Ethernet 10G MAC Must have valid MAC Address\n");
276 return -EINVAL;
277 }
278 if (!tgec->exception_cb) {
279 pr_err("uninitialized exception_cb\n");
280 return -EINVAL;
281 }
282 if (!tgec->event_cb) {
283 pr_err("uninitialized event_cb\n");
284 return -EINVAL;
285 }
286
287 return 0;
288}
289
290static int get_exception_flag(enum fman_mac_exceptions exception)
291{
292 u32 bit_mask;
293
294 switch (exception) {
295 case FM_MAC_EX_10G_MDIO_SCAN_EVENT:
296 bit_mask = TGEC_IMASK_MDIO_SCAN_EVENT;
297 break;
298 case FM_MAC_EX_10G_MDIO_CMD_CMPL:
299 bit_mask = TGEC_IMASK_MDIO_CMD_CMPL;
300 break;
301 case FM_MAC_EX_10G_REM_FAULT:
302 bit_mask = TGEC_IMASK_REM_FAULT;
303 break;
304 case FM_MAC_EX_10G_LOC_FAULT:
305 bit_mask = TGEC_IMASK_LOC_FAULT;
306 break;
307 case FM_MAC_EX_10G_TX_ECC_ER:
308 bit_mask = TGEC_IMASK_TX_ECC_ER;
309 break;
310 case FM_MAC_EX_10G_TX_FIFO_UNFL:
311 bit_mask = TGEC_IMASK_TX_FIFO_UNFL;
312 break;
313 case FM_MAC_EX_10G_TX_FIFO_OVFL:
314 bit_mask = TGEC_IMASK_TX_FIFO_OVFL;
315 break;
316 case FM_MAC_EX_10G_TX_ER:
317 bit_mask = TGEC_IMASK_TX_ER;
318 break;
319 case FM_MAC_EX_10G_RX_FIFO_OVFL:
320 bit_mask = TGEC_IMASK_RX_FIFO_OVFL;
321 break;
322 case FM_MAC_EX_10G_RX_ECC_ER:
323 bit_mask = TGEC_IMASK_RX_ECC_ER;
324 break;
325 case FM_MAC_EX_10G_RX_JAB_FRM:
326 bit_mask = TGEC_IMASK_RX_JAB_FRM;
327 break;
328 case FM_MAC_EX_10G_RX_OVRSZ_FRM:
329 bit_mask = TGEC_IMASK_RX_OVRSZ_FRM;
330 break;
331 case FM_MAC_EX_10G_RX_RUNT_FRM:
332 bit_mask = TGEC_IMASK_RX_RUNT_FRM;
333 break;
334 case FM_MAC_EX_10G_RX_FRAG_FRM:
335 bit_mask = TGEC_IMASK_RX_FRAG_FRM;
336 break;
337 case FM_MAC_EX_10G_RX_LEN_ER:
338 bit_mask = TGEC_IMASK_RX_LEN_ER;
339 break;
340 case FM_MAC_EX_10G_RX_CRC_ER:
341 bit_mask = TGEC_IMASK_RX_CRC_ER;
342 break;
343 case FM_MAC_EX_10G_RX_ALIGN_ER:
344 bit_mask = TGEC_IMASK_RX_ALIGN_ER;
345 break;
346 default:
347 bit_mask = 0;
348 break;
349 }
350
351 return bit_mask;
352}
353
354static void tgec_err_exception(void *handle)
355{
356 struct fman_mac *tgec = (struct fman_mac *)handle;
357 struct tgec_regs __iomem *regs = tgec->regs;
358 u32 event;
359
360 /* do not handle MDIO events */
361 event = ioread32be(&regs->ievent) &
362 ~(TGEC_IMASK_MDIO_SCAN_EVENT |
363 TGEC_IMASK_MDIO_CMD_CMPL);
364
365 event &= ioread32be(&regs->imask);
366
367 iowrite32be(event, &regs->ievent);
368
369 if (event & TGEC_IMASK_REM_FAULT)
370 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_REM_FAULT);
371 if (event & TGEC_IMASK_LOC_FAULT)
372 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_LOC_FAULT);
373 if (event & TGEC_IMASK_TX_ECC_ER)
374 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_ECC_ER);
375 if (event & TGEC_IMASK_TX_FIFO_UNFL)
376 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_FIFO_UNFL);
377 if (event & TGEC_IMASK_TX_FIFO_OVFL)
378 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_FIFO_OVFL);
379 if (event & TGEC_IMASK_TX_ER)
380 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_ER);
381 if (event & TGEC_IMASK_RX_FIFO_OVFL)
382 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_FIFO_OVFL);
383 if (event & TGEC_IMASK_RX_ECC_ER)
384 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_ECC_ER);
385 if (event & TGEC_IMASK_RX_JAB_FRM)
386 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_JAB_FRM);
387 if (event & TGEC_IMASK_RX_OVRSZ_FRM)
388 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_OVRSZ_FRM);
389 if (event & TGEC_IMASK_RX_RUNT_FRM)
390 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_RUNT_FRM);
391 if (event & TGEC_IMASK_RX_FRAG_FRM)
392 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_FRAG_FRM);
393 if (event & TGEC_IMASK_RX_LEN_ER)
394 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_LEN_ER);
395 if (event & TGEC_IMASK_RX_CRC_ER)
396 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_CRC_ER);
397 if (event & TGEC_IMASK_RX_ALIGN_ER)
398 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_ALIGN_ER);
399}
400
401static void free_init_resources(struct fman_mac *tgec)
402{
403 fman_unregister_intr(tgec->fm, FMAN_MOD_MAC, tgec->mac_id,
404 FMAN_INTR_TYPE_ERR);
405
406 /* release the driver's group hash table */
407 free_hash_table(tgec->multicast_addr_hash);
408 tgec->multicast_addr_hash = NULL;
409
410 /* release the driver's individual hash table */
411 free_hash_table(tgec->unicast_addr_hash);
412 tgec->unicast_addr_hash = NULL;
413}
414
415static bool is_init_done(struct tgec_cfg *cfg)
416{
417 /* Checks if tGEC driver parameters were initialized */
418 if (!cfg)
419 return true;
420
421 return false;
422}
423
424int tgec_enable(struct fman_mac *tgec, enum comm_mode mode)
425{
426 struct tgec_regs __iomem *regs = tgec->regs;
427 u32 tmp;
428
429 if (!is_init_done(tgec->cfg))
430 return -EINVAL;
431
432 tmp = ioread32be(&regs->command_config);
433 if (mode & COMM_MODE_RX)
434 tmp |= CMD_CFG_RX_EN;
435 if (mode & COMM_MODE_TX)
436 tmp |= CMD_CFG_TX_EN;
437 iowrite32be(tmp, &regs->command_config);
438
439 return 0;
440}
441
442int tgec_disable(struct fman_mac *tgec, enum comm_mode mode)
443{
444 struct tgec_regs __iomem *regs = tgec->regs;
445 u32 tmp;
446
447 if (!is_init_done(tgec->cfg))
448 return -EINVAL;
449
450 tmp = ioread32be(&regs->command_config);
451 if (mode & COMM_MODE_RX)
452 tmp &= ~CMD_CFG_RX_EN;
453 if (mode & COMM_MODE_TX)
454 tmp &= ~CMD_CFG_TX_EN;
455 iowrite32be(tmp, &regs->command_config);
456
457 return 0;
458}
459
460int tgec_set_promiscuous(struct fman_mac *tgec, bool new_val)
461{
462 struct tgec_regs __iomem *regs = tgec->regs;
463 u32 tmp;
464
465 if (!is_init_done(tgec->cfg))
466 return -EINVAL;
467
468 tmp = ioread32be(&regs->command_config);
469 if (new_val)
470 tmp |= CMD_CFG_PROMIS_EN;
471 else
472 tmp &= ~CMD_CFG_PROMIS_EN;
473 iowrite32be(tmp, &regs->command_config);
474
475 return 0;
476}
477
478int tgec_cfg_max_frame_len(struct fman_mac *tgec, u16 new_val)
479{
480 if (is_init_done(tgec->cfg))
481 return -EINVAL;
482
483 tgec->cfg->max_frame_length = new_val;
484
485 return 0;
486}
487
488int tgec_set_tx_pause_frames(struct fman_mac *tgec, u8 __maybe_unused priority,
489 u16 pause_time, u16 __maybe_unused thresh_time)
490{
491 struct tgec_regs __iomem *regs = tgec->regs;
492
493 if (!is_init_done(tgec->cfg))
494 return -EINVAL;
495
496 iowrite32be((u32)pause_time, &regs->pause_quant);
497
498 return 0;
499}
500
501int tgec_accept_rx_pause_frames(struct fman_mac *tgec, bool en)
502{
503 struct tgec_regs __iomem *regs = tgec->regs;
504 u32 tmp;
505
506 if (!is_init_done(tgec->cfg))
507 return -EINVAL;
508
509 tmp = ioread32be(&regs->command_config);
510 if (!en)
511 tmp |= CMD_CFG_PAUSE_IGNORE;
512 else
513 tmp &= ~CMD_CFG_PAUSE_IGNORE;
514 iowrite32be(tmp, &regs->command_config);
515
516 return 0;
517}
518
519int tgec_modify_mac_address(struct fman_mac *tgec, enet_addr_t *p_enet_addr)
520{
521 if (!is_init_done(tgec->cfg))
522 return -EINVAL;
523
524 tgec->addr = ENET_ADDR_TO_UINT64(*p_enet_addr);
525 set_mac_address(tgec->regs, (u8 *)(*p_enet_addr));
526
527 return 0;
528}
529
530int tgec_add_hash_mac_address(struct fman_mac *tgec, enet_addr_t *eth_addr)
531{
532 struct tgec_regs __iomem *regs = tgec->regs;
533 struct eth_hash_entry *hash_entry;
534 u32 crc = 0xFFFFFFFF, hash;
535 u64 addr;
536
537 if (!is_init_done(tgec->cfg))
538 return -EINVAL;
539
540 addr = ENET_ADDR_TO_UINT64(*eth_addr);
541
542 if (!(addr & GROUP_ADDRESS)) {
543 /* Unicast addresses not supported in hash */
544 pr_err("Unicast Address\n");
545 return -EINVAL;
546 }
547 /* CRC calculation */
548 crc = crc32_le(crc, (u8 *)eth_addr, ETH_ALEN);
549 crc = bitrev32(crc);
550 /* Take 9 MSB bits */
551 hash = (crc >> TGEC_HASH_MCAST_SHIFT) & TGEC_HASH_ADR_MSK;
552
553 /* Create element to be added to the driver hash table */
554 hash_entry = kmalloc(sizeof(*hash_entry), GFP_KERNEL);
555 if (!hash_entry)
556 return -ENOMEM;
557 hash_entry->addr = addr;
558 INIT_LIST_HEAD(&hash_entry->node);
559
560 list_add_tail(&hash_entry->node,
561 &tgec->multicast_addr_hash->lsts[hash]);
562 iowrite32be((hash | TGEC_HASH_MCAST_EN), &regs->hashtable_ctrl);
563
564 return 0;
565}
566
567int tgec_del_hash_mac_address(struct fman_mac *tgec, enet_addr_t *eth_addr)
568{
569 struct tgec_regs __iomem *regs = tgec->regs;
570 struct eth_hash_entry *hash_entry = NULL;
571 struct list_head *pos;
572 u32 crc = 0xFFFFFFFF, hash;
573 u64 addr;
574
575 if (!is_init_done(tgec->cfg))
576 return -EINVAL;
577
578 addr = ((*(u64 *)eth_addr) >> 16);
579
580 /* CRC calculation */
581 crc = crc32_le(crc, (u8 *)eth_addr, ETH_ALEN);
582 crc = bitrev32(crc);
583 /* Take 9 MSB bits */
584 hash = (crc >> TGEC_HASH_MCAST_SHIFT) & TGEC_HASH_ADR_MSK;
585
586 list_for_each(pos, &tgec->multicast_addr_hash->lsts[hash]) {
587 hash_entry = ETH_HASH_ENTRY_OBJ(pos);
588 if (hash_entry->addr == addr) {
589 list_del_init(&hash_entry->node);
590 kfree(hash_entry);
591 break;
592 }
593 }
594 if (list_empty(&tgec->multicast_addr_hash->lsts[hash]))
595 iowrite32be((hash & ~TGEC_HASH_MCAST_EN),
596 &regs->hashtable_ctrl);
597
598 return 0;
599}
600
601int tgec_get_version(struct fman_mac *tgec, u32 *mac_version)
602{
603 struct tgec_regs __iomem *regs = tgec->regs;
604
605 if (!is_init_done(tgec->cfg))
606 return -EINVAL;
607
608 *mac_version = ioread32be(&regs->tgec_id);
609
610 return 0;
611}
612
613int tgec_set_exception(struct fman_mac *tgec,
614 enum fman_mac_exceptions exception, bool enable)
615{
616 struct tgec_regs __iomem *regs = tgec->regs;
617 u32 bit_mask = 0;
618
619 if (!is_init_done(tgec->cfg))
620 return -EINVAL;
621
622 bit_mask = get_exception_flag(exception);
623 if (bit_mask) {
624 if (enable)
625 tgec->exceptions |= bit_mask;
626 else
627 tgec->exceptions &= ~bit_mask;
628 } else {
629 pr_err("Undefined exception\n");
630 return -EINVAL;
631 }
632 if (enable)
633 iowrite32be(ioread32be(&regs->imask) | bit_mask, &regs->imask);
634 else
635 iowrite32be(ioread32be(&regs->imask) & ~bit_mask, &regs->imask);
636
637 return 0;
638}
639
640int tgec_init(struct fman_mac *tgec)
641{
642 struct tgec_cfg *cfg;
643 enet_addr_t eth_addr;
644 int err;
645
646 if (is_init_done(tgec->cfg))
647 return -EINVAL;
648
649 if (DEFAULT_RESET_ON_INIT &&
650 (fman_reset_mac(tgec->fm, tgec->mac_id) != 0)) {
651 pr_err("Can't reset MAC!\n");
652 return -EINVAL;
653 }
654
655 err = check_init_parameters(tgec);
656 if (err)
657 return err;
658
659 cfg = tgec->cfg;
660
661 MAKE_ENET_ADDR_FROM_UINT64(tgec->addr, eth_addr);
662 set_mac_address(tgec->regs, (u8 *)eth_addr);
663
664 /* interrupts */
665 /* FM_10G_REM_N_LCL_FLT_EX_10GMAC_ERRATA_SW005 Errata workaround */
666 if (tgec->fm_rev_info.major <= 2)
667 tgec->exceptions &= ~(TGEC_IMASK_REM_FAULT |
668 TGEC_IMASK_LOC_FAULT);
669
670 err = init(tgec->regs, cfg, tgec->exceptions);
671 if (err) {
672 free_init_resources(tgec);
673 pr_err("TGEC version doesn't support this i/f mode\n");
674 return err;
675 }
676
677 /* Max Frame Length */
678 err = fman_set_mac_max_frame(tgec->fm, tgec->mac_id,
679 cfg->max_frame_length);
680 if (err) {
681 pr_err("Setting max frame length FAILED\n");
682 free_init_resources(tgec);
683 return -EINVAL;
684 }
685
686 /* FM_TX_FIFO_CORRUPTION_ERRATA_10GMAC_A007 Errata workaround */
687 if (tgec->fm_rev_info.major == 2) {
688 struct tgec_regs __iomem *regs = tgec->regs;
689 u32 tmp;
690
691 /* restore the default tx ipg Length */
692 tmp = (ioread32be(&regs->tx_ipg_len) &
693 ~TGEC_TX_IPG_LENGTH_MASK) | 12;
694
695 iowrite32be(tmp, &regs->tx_ipg_len);
696 }
697
698 tgec->multicast_addr_hash = alloc_hash_table(TGEC_HASH_TABLE_SIZE);
699 if (!tgec->multicast_addr_hash) {
700 free_init_resources(tgec);
701 pr_err("allocation hash table is FAILED\n");
702 return -ENOMEM;
703 }
704
705 tgec->unicast_addr_hash = alloc_hash_table(TGEC_HASH_TABLE_SIZE);
706 if (!tgec->unicast_addr_hash) {
707 free_init_resources(tgec);
708 pr_err("allocation hash table is FAILED\n");
709 return -ENOMEM;
710 }
711
712 fman_register_intr(tgec->fm, FMAN_MOD_MAC, tgec->mac_id,
713 FMAN_INTR_TYPE_ERR, tgec_err_exception, tgec);
714
715 kfree(cfg);
716 tgec->cfg = NULL;
717
718 return 0;
719}
720
721int tgec_free(struct fman_mac *tgec)
722{
723 free_init_resources(tgec);
724
725 if (tgec->cfg)
726 tgec->cfg = NULL;
727
728 kfree(tgec->cfg);
729 kfree(tgec);
730
731 return 0;
732}
733
734struct fman_mac *tgec_config(struct fman_mac_params *params)
735{
736 struct fman_mac *tgec;
737 struct tgec_cfg *cfg;
738 void __iomem *base_addr;
739
740 base_addr = params->base_addr;
741 /* allocate memory for the UCC GETH data structure. */
742 tgec = kzalloc(sizeof(*tgec), GFP_KERNEL);
743 if (!tgec)
744 return NULL;
745
746 /* allocate memory for the 10G MAC driver parameters data structure. */
747 cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
748 if (!cfg) {
749 tgec_free(tgec);
750 return NULL;
751 }
752
753 /* Plant parameter structure pointer */
754 tgec->cfg = cfg;
755
756 set_dflts(cfg);
757
758 tgec->regs = base_addr;
759 tgec->addr = ENET_ADDR_TO_UINT64(params->addr);
760 tgec->max_speed = params->max_speed;
761 tgec->mac_id = params->mac_id;
762 tgec->exceptions = (TGEC_IMASK_MDIO_SCAN_EVENT |
763 TGEC_IMASK_REM_FAULT |
764 TGEC_IMASK_LOC_FAULT |
765 TGEC_IMASK_TX_ECC_ER |
766 TGEC_IMASK_TX_FIFO_UNFL |
767 TGEC_IMASK_TX_FIFO_OVFL |
768 TGEC_IMASK_TX_ER |
769 TGEC_IMASK_RX_FIFO_OVFL |
770 TGEC_IMASK_RX_ECC_ER |
771 TGEC_IMASK_RX_JAB_FRM |
772 TGEC_IMASK_RX_OVRSZ_FRM |
773 TGEC_IMASK_RX_RUNT_FRM |
774 TGEC_IMASK_RX_FRAG_FRM |
775 TGEC_IMASK_RX_CRC_ER |
776 TGEC_IMASK_RX_ALIGN_ER);
777 tgec->exception_cb = params->exception_cb;
778 tgec->event_cb = params->event_cb;
779 tgec->dev_id = params->dev_id;
780 tgec->fm = params->fm;
781
782 /* Save FMan revision */
783 fman_get_revision(tgec->fm, &tgec->fm_rev_info);
784
785 return tgec;
786}
Linux 6.x block layer and io_uring tree(s)