1// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-or-later
2/*
3 * Copyright 2008 - 2015 Freescale Semiconductor Inc.
4 */
5
6#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
7
8#include "fman_tgec.h"
9#include "fman.h"
10#include "mac.h"
11
12#include <linux/slab.h>
13#include <linux/bitrev.h>
14#include <linux/io.h>
15#include <linux/crc32.h>
16#include <linux/netdevice.h>
17
18/* Transmit Inter-Packet Gap Length Register (TX_IPG_LENGTH) */
19#define TGEC_TX_IPG_LENGTH_MASK 0x000003ff
20
21/* Command and Configuration Register (COMMAND_CONFIG) */
22#define CMD_CFG_EN_TIMESTAMP 0x00100000
23#define CMD_CFG_NO_LEN_CHK 0x00020000
24#define CMD_CFG_PAUSE_IGNORE 0x00000100
25#define CMF_CFG_CRC_FWD 0x00000040
26#define CMD_CFG_PROMIS_EN 0x00000010
27#define CMD_CFG_RX_EN 0x00000002
28#define CMD_CFG_TX_EN 0x00000001
29
30/* Interrupt Mask Register (IMASK) */
31#define TGEC_IMASK_MDIO_SCAN_EVENT 0x00010000
32#define TGEC_IMASK_MDIO_CMD_CMPL 0x00008000
33#define TGEC_IMASK_REM_FAULT 0x00004000
34#define TGEC_IMASK_LOC_FAULT 0x00002000
35#define TGEC_IMASK_TX_ECC_ER 0x00001000
36#define TGEC_IMASK_TX_FIFO_UNFL 0x00000800
37#define TGEC_IMASK_TX_FIFO_OVFL 0x00000400
38#define TGEC_IMASK_TX_ER 0x00000200
39#define TGEC_IMASK_RX_FIFO_OVFL 0x00000100
40#define TGEC_IMASK_RX_ECC_ER 0x00000080
41#define TGEC_IMASK_RX_JAB_FRM 0x00000040
42#define TGEC_IMASK_RX_OVRSZ_FRM 0x00000020
43#define TGEC_IMASK_RX_RUNT_FRM 0x00000010
44#define TGEC_IMASK_RX_FRAG_FRM 0x00000008
45#define TGEC_IMASK_RX_LEN_ER 0x00000004
46#define TGEC_IMASK_RX_CRC_ER 0x00000002
47#define TGEC_IMASK_RX_ALIGN_ER 0x00000001
48
49/* Hashtable Control Register (HASHTABLE_CTRL) */
50#define TGEC_HASH_MCAST_SHIFT 23
51#define TGEC_HASH_MCAST_EN 0x00000200
52#define TGEC_HASH_ADR_MSK 0x000001ff
53
54#define DEFAULT_TX_IPG_LENGTH 12
55#define DEFAULT_MAX_FRAME_LENGTH 0x600
56#define DEFAULT_PAUSE_QUANT 0xf000
57
58/* number of pattern match registers (entries) */
59#define TGEC_NUM_OF_PADDRS 1
60
61/* Group address bit indication */
62#define GROUP_ADDRESS 0x0000010000000000LL
63
64/* Hash table size (= 32 bits*8 regs) */
65#define TGEC_HASH_TABLE_SIZE 512
66
67/* tGEC memory map */
68struct tgec_regs {
69 u32 tgec_id; /* 0x000 Controller ID */
70 u32 reserved001[1]; /* 0x004 */
71 u32 command_config; /* 0x008 Control and configuration */
72 u32 mac_addr_0; /* 0x00c Lower 32 bits of the MAC adr */
73 u32 mac_addr_1; /* 0x010 Upper 16 bits of the MAC adr */
74 u32 maxfrm; /* 0x014 Maximum frame length */
75 u32 pause_quant; /* 0x018 Pause quanta */
76 u32 rx_fifo_sections; /* 0x01c */
77 u32 tx_fifo_sections; /* 0x020 */
78 u32 rx_fifo_almost_f_e; /* 0x024 */
79 u32 tx_fifo_almost_f_e; /* 0x028 */
80 u32 hashtable_ctrl; /* 0x02c Hash table control */
81 u32 mdio_cfg_status; /* 0x030 */
82 u32 mdio_command; /* 0x034 */
83 u32 mdio_data; /* 0x038 */
84 u32 mdio_regaddr; /* 0x03c */
85 u32 status; /* 0x040 */
86 u32 tx_ipg_len; /* 0x044 Transmitter inter-packet-gap */
87 u32 mac_addr_2; /* 0x048 Lower 32 bits of 2nd MAC adr */
88 u32 mac_addr_3; /* 0x04c Upper 16 bits of 2nd MAC adr */
89 u32 rx_fifo_ptr_rd; /* 0x050 */
90 u32 rx_fifo_ptr_wr; /* 0x054 */
91 u32 tx_fifo_ptr_rd; /* 0x058 */
92 u32 tx_fifo_ptr_wr; /* 0x05c */
93 u32 imask; /* 0x060 Interrupt mask */
94 u32 ievent; /* 0x064 Interrupt event */
95 u32 udp_port; /* 0x068 Defines a UDP Port number */
96 u32 type_1588v2; /* 0x06c Type field for 1588v2 */
97 u32 reserved070[4]; /* 0x070 */
98 /* 10Ge Statistics Counter */
99 u32 tfrm_u; /* 80 aFramesTransmittedOK */
100 u32 tfrm_l; /* 84 aFramesTransmittedOK */
101 u32 rfrm_u; /* 88 aFramesReceivedOK */
102 u32 rfrm_l; /* 8c aFramesReceivedOK */
103 u32 rfcs_u; /* 90 aFrameCheckSequenceErrors */
104 u32 rfcs_l; /* 94 aFrameCheckSequenceErrors */
105 u32 raln_u; /* 98 aAlignmentErrors */
106 u32 raln_l; /* 9c aAlignmentErrors */
107 u32 txpf_u; /* A0 aPAUSEMACCtrlFramesTransmitted */
108 u32 txpf_l; /* A4 aPAUSEMACCtrlFramesTransmitted */
109 u32 rxpf_u; /* A8 aPAUSEMACCtrlFramesReceived */
110 u32 rxpf_l; /* Ac aPAUSEMACCtrlFramesReceived */
111 u32 rlong_u; /* B0 aFrameTooLongErrors */
112 u32 rlong_l; /* B4 aFrameTooLongErrors */
113 u32 rflr_u; /* B8 aInRangeLengthErrors */
114 u32 rflr_l; /* Bc aInRangeLengthErrors */
115 u32 tvlan_u; /* C0 VLANTransmittedOK */
116 u32 tvlan_l; /* C4 VLANTransmittedOK */
117 u32 rvlan_u; /* C8 VLANReceivedOK */
118 u32 rvlan_l; /* Cc VLANReceivedOK */
119 u32 toct_u; /* D0 if_out_octets */
120 u32 toct_l; /* D4 if_out_octets */
121 u32 roct_u; /* D8 if_in_octets */
122 u32 roct_l; /* Dc if_in_octets */
123 u32 ruca_u; /* E0 if_in_ucast_pkts */
124 u32 ruca_l; /* E4 if_in_ucast_pkts */
125 u32 rmca_u; /* E8 ifInMulticastPkts */
126 u32 rmca_l; /* Ec ifInMulticastPkts */
127 u32 rbca_u; /* F0 ifInBroadcastPkts */
128 u32 rbca_l; /* F4 ifInBroadcastPkts */
129 u32 terr_u; /* F8 if_out_errors */
130 u32 terr_l; /* Fc if_out_errors */
131 u32 reserved100[2]; /* 100-108 */
132 u32 tuca_u; /* 108 if_out_ucast_pkts */
133 u32 tuca_l; /* 10c if_out_ucast_pkts */
134 u32 tmca_u; /* 110 ifOutMulticastPkts */
135 u32 tmca_l; /* 114 ifOutMulticastPkts */
136 u32 tbca_u; /* 118 ifOutBroadcastPkts */
137 u32 tbca_l; /* 11c ifOutBroadcastPkts */
138 u32 rdrp_u; /* 120 etherStatsDropEvents */
139 u32 rdrp_l; /* 124 etherStatsDropEvents */
140 u32 reoct_u; /* 128 etherStatsOctets */
141 u32 reoct_l; /* 12c etherStatsOctets */
142 u32 rpkt_u; /* 130 etherStatsPkts */
143 u32 rpkt_l; /* 134 etherStatsPkts */
144 u32 trund_u; /* 138 etherStatsUndersizePkts */
145 u32 trund_l; /* 13c etherStatsUndersizePkts */
146 u32 r64_u; /* 140 etherStatsPkts64Octets */
147 u32 r64_l; /* 144 etherStatsPkts64Octets */
148 u32 r127_u; /* 148 etherStatsPkts65to127Octets */
149 u32 r127_l; /* 14c etherStatsPkts65to127Octets */
150 u32 r255_u; /* 150 etherStatsPkts128to255Octets */
151 u32 r255_l; /* 154 etherStatsPkts128to255Octets */
152 u32 r511_u; /* 158 etherStatsPkts256to511Octets */
153 u32 r511_l; /* 15c etherStatsPkts256to511Octets */
154 u32 r1023_u; /* 160 etherStatsPkts512to1023Octets */
155 u32 r1023_l; /* 164 etherStatsPkts512to1023Octets */
156 u32 r1518_u; /* 168 etherStatsPkts1024to1518Octets */
157 u32 r1518_l; /* 16c etherStatsPkts1024to1518Octets */
158 u32 r1519x_u; /* 170 etherStatsPkts1519toX */
159 u32 r1519x_l; /* 174 etherStatsPkts1519toX */
160 u32 trovr_u; /* 178 etherStatsOversizePkts */
161 u32 trovr_l; /* 17c etherStatsOversizePkts */
162 u32 trjbr_u; /* 180 etherStatsJabbers */
163 u32 trjbr_l; /* 184 etherStatsJabbers */
164 u32 trfrg_u; /* 188 etherStatsFragments */
165 u32 trfrg_l; /* 18C etherStatsFragments */
166 u32 rerr_u; /* 190 if_in_errors */
167 u32 rerr_l; /* 194 if_in_errors */
168};
169
170struct tgec_cfg {
171 bool pause_ignore;
172 bool promiscuous_mode_enable;
173 u16 max_frame_length;
174 u16 pause_quant;
175 u32 tx_ipg_length;
176};
177
178struct fman_mac {
179 /* Pointer to the memory mapped registers. */
180 struct tgec_regs __iomem *regs;
181 /* MAC address of device; */
182 u64 addr;
183 u16 max_speed;
184 struct mac_device *dev_id; /* device cookie used by the exception cbs */
185 fman_mac_exception_cb *exception_cb;
186 fman_mac_exception_cb *event_cb;
187 /* pointer to driver's global address hash table */
188 struct eth_hash_t *multicast_addr_hash;
189 /* pointer to driver's individual address hash table */
190 struct eth_hash_t *unicast_addr_hash;
191 u8 mac_id;
192 u32 exceptions;
193 struct tgec_cfg *cfg;
194 void *fm;
195 struct fman_rev_info fm_rev_info;
196 bool allmulti_enabled;
197};
198
199static void set_mac_address(struct tgec_regs __iomem *regs, const u8 *adr)
200{
201 u32 tmp0, tmp1;
202
203 tmp0 = (u32)(adr[0] | adr[1] << 8 | adr[2] << 16 | adr[3] << 24);
204 tmp1 = (u32)(adr[4] | adr[5] << 8);
205 iowrite32be(tmp0, &regs->mac_addr_0);
206 iowrite32be(tmp1, &regs->mac_addr_1);
207}
208
209static void set_dflts(struct tgec_cfg *cfg)
210{
211 cfg->promiscuous_mode_enable = false;
212 cfg->pause_ignore = false;
213 cfg->tx_ipg_length = DEFAULT_TX_IPG_LENGTH;
214 cfg->max_frame_length = DEFAULT_MAX_FRAME_LENGTH;
215 cfg->pause_quant = DEFAULT_PAUSE_QUANT;
216}
217
218static int init(struct tgec_regs __iomem *regs, struct tgec_cfg *cfg,
219 u32 exception_mask)
220{
221 u32 tmp;
222
223 /* Config */
224 tmp = CMF_CFG_CRC_FWD;
225 if (cfg->promiscuous_mode_enable)
226 tmp |= CMD_CFG_PROMIS_EN;
227 if (cfg->pause_ignore)
228 tmp |= CMD_CFG_PAUSE_IGNORE;
229 /* Payload length check disable */
230 tmp |= CMD_CFG_NO_LEN_CHK;
231 iowrite32be(tmp, &regs->command_config);
232
233 /* Max Frame Length */
234 iowrite32be((u32)cfg->max_frame_length, &regs->maxfrm);
235 /* Pause Time */
236 iowrite32be(cfg->pause_quant, &regs->pause_quant);
237
238 /* clear all pending events and set-up interrupts */
239 iowrite32be(0xffffffff, &regs->ievent);
240 iowrite32be(ioread32be(&regs->imask) | exception_mask, &regs->imask);
241
242 return 0;
243}
244
245static int check_init_parameters(struct fman_mac *tgec)
246{
247 if (!tgec->exception_cb) {
248 pr_err("uninitialized exception_cb\n");
249 return -EINVAL;
250 }
251 if (!tgec->event_cb) {
252 pr_err("uninitialized event_cb\n");
253 return -EINVAL;
254 }
255
256 return 0;
257}
258
259static int get_exception_flag(enum fman_mac_exceptions exception)
260{
261 u32 bit_mask;
262
263 switch (exception) {
264 case FM_MAC_EX_10G_MDIO_SCAN_EVENT:
265 bit_mask = TGEC_IMASK_MDIO_SCAN_EVENT;
266 break;
267 case FM_MAC_EX_10G_MDIO_CMD_CMPL:
268 bit_mask = TGEC_IMASK_MDIO_CMD_CMPL;
269 break;
270 case FM_MAC_EX_10G_REM_FAULT:
271 bit_mask = TGEC_IMASK_REM_FAULT;
272 break;
273 case FM_MAC_EX_10G_LOC_FAULT:
274 bit_mask = TGEC_IMASK_LOC_FAULT;
275 break;
276 case FM_MAC_EX_10G_TX_ECC_ER:
277 bit_mask = TGEC_IMASK_TX_ECC_ER;
278 break;
279 case FM_MAC_EX_10G_TX_FIFO_UNFL:
280 bit_mask = TGEC_IMASK_TX_FIFO_UNFL;
281 break;
282 case FM_MAC_EX_10G_TX_FIFO_OVFL:
283 bit_mask = TGEC_IMASK_TX_FIFO_OVFL;
284 break;
285 case FM_MAC_EX_10G_TX_ER:
286 bit_mask = TGEC_IMASK_TX_ER;
287 break;
288 case FM_MAC_EX_10G_RX_FIFO_OVFL:
289 bit_mask = TGEC_IMASK_RX_FIFO_OVFL;
290 break;
291 case FM_MAC_EX_10G_RX_ECC_ER:
292 bit_mask = TGEC_IMASK_RX_ECC_ER;
293 break;
294 case FM_MAC_EX_10G_RX_JAB_FRM:
295 bit_mask = TGEC_IMASK_RX_JAB_FRM;
296 break;
297 case FM_MAC_EX_10G_RX_OVRSZ_FRM:
298 bit_mask = TGEC_IMASK_RX_OVRSZ_FRM;
299 break;
300 case FM_MAC_EX_10G_RX_RUNT_FRM:
301 bit_mask = TGEC_IMASK_RX_RUNT_FRM;
302 break;
303 case FM_MAC_EX_10G_RX_FRAG_FRM:
304 bit_mask = TGEC_IMASK_RX_FRAG_FRM;
305 break;
306 case FM_MAC_EX_10G_RX_LEN_ER:
307 bit_mask = TGEC_IMASK_RX_LEN_ER;
308 break;
309 case FM_MAC_EX_10G_RX_CRC_ER:
310 bit_mask = TGEC_IMASK_RX_CRC_ER;
311 break;
312 case FM_MAC_EX_10G_RX_ALIGN_ER:
313 bit_mask = TGEC_IMASK_RX_ALIGN_ER;
314 break;
315 default:
316 bit_mask = 0;
317 break;
318 }
319
320 return bit_mask;
321}
322
323static void tgec_err_exception(void *handle)
324{
325 struct fman_mac *tgec = (struct fman_mac *)handle;
326 struct tgec_regs __iomem *regs = tgec->regs;
327 u32 event;
328
329 /* do not handle MDIO events */
330 event = ioread32be(&regs->ievent) &
331 ~(TGEC_IMASK_MDIO_SCAN_EVENT |
332 TGEC_IMASK_MDIO_CMD_CMPL);
333
334 event &= ioread32be(&regs->imask);
335
336 iowrite32be(event, &regs->ievent);
337
338 if (event & TGEC_IMASK_REM_FAULT)
339 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_REM_FAULT);
340 if (event & TGEC_IMASK_LOC_FAULT)
341 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_LOC_FAULT);
342 if (event & TGEC_IMASK_TX_ECC_ER)
343 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_ECC_ER);
344 if (event & TGEC_IMASK_TX_FIFO_UNFL)
345 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_FIFO_UNFL);
346 if (event & TGEC_IMASK_TX_FIFO_OVFL)
347 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_FIFO_OVFL);
348 if (event & TGEC_IMASK_TX_ER)
349 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_ER);
350 if (event & TGEC_IMASK_RX_FIFO_OVFL)
351 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_FIFO_OVFL);
352 if (event & TGEC_IMASK_RX_ECC_ER)
353 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_ECC_ER);
354 if (event & TGEC_IMASK_RX_JAB_FRM)
355 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_JAB_FRM);
356 if (event & TGEC_IMASK_RX_OVRSZ_FRM)
357 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_OVRSZ_FRM);
358 if (event & TGEC_IMASK_RX_RUNT_FRM)
359 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_RUNT_FRM);
360 if (event & TGEC_IMASK_RX_FRAG_FRM)
361 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_FRAG_FRM);
362 if (event & TGEC_IMASK_RX_LEN_ER)
363 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_LEN_ER);
364 if (event & TGEC_IMASK_RX_CRC_ER)
365 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_CRC_ER);
366 if (event & TGEC_IMASK_RX_ALIGN_ER)
367 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_ALIGN_ER);
368}
369
370static void free_init_resources(struct fman_mac *tgec)
371{
372 fman_unregister_intr(fman: tgec->fm, mod: FMAN_MOD_MAC, mod_id: tgec->mac_id,
373 intr_type: FMAN_INTR_TYPE_ERR);
374
375 /* release the driver's group hash table */
376 free_hash_table(hash: tgec->multicast_addr_hash);
377 tgec->multicast_addr_hash = NULL;
378
379 /* release the driver's individual hash table */
380 free_hash_table(hash: tgec->unicast_addr_hash);
381 tgec->unicast_addr_hash = NULL;
382}
383
384static int tgec_enable(struct fman_mac *tgec)
385{
386 return 0;
387}
388
389static void tgec_disable(struct fman_mac *tgec)
390{
391}
392
393static int tgec_set_promiscuous(struct fman_mac *tgec, bool new_val)
394{
395 struct tgec_regs __iomem *regs = tgec->regs;
396 u32 tmp;
397
398 tmp = ioread32be(&regs->command_config);
399 if (new_val)
400 tmp |= CMD_CFG_PROMIS_EN;
401 else
402 tmp &= ~CMD_CFG_PROMIS_EN;
403 iowrite32be(tmp, &regs->command_config);
404
405 return 0;
406}
407
408static int tgec_set_tx_pause_frames(struct fman_mac *tgec,
409 u8 __maybe_unused priority, u16 pause_time,
410 u16 __maybe_unused thresh_time)
411{
412 struct tgec_regs __iomem *regs = tgec->regs;
413
414 iowrite32be((u32)pause_time, &regs->pause_quant);
415
416 return 0;
417}
418
419static int tgec_accept_rx_pause_frames(struct fman_mac *tgec, bool en)
420{
421 struct tgec_regs __iomem *regs = tgec->regs;
422 u32 tmp;
423
424 tmp = ioread32be(&regs->command_config);
425 if (!en)
426 tmp |= CMD_CFG_PAUSE_IGNORE;
427 else
428 tmp &= ~CMD_CFG_PAUSE_IGNORE;
429 iowrite32be(tmp, &regs->command_config);
430
431 return 0;
432}
433
434static void tgec_mac_config(struct phylink_config *config, unsigned int mode,
435 const struct phylink_link_state *state)
436{
437}
438
439static void tgec_link_up(struct phylink_config *config, struct phy_device *phy,
440 unsigned int mode, phy_interface_t interface,
441 int speed, int duplex, bool tx_pause, bool rx_pause)
442{
443 struct mac_device *mac_dev = fman_config_to_mac(config);
444 struct fman_mac *tgec = mac_dev->fman_mac;
445 struct tgec_regs __iomem *regs = tgec->regs;
446 u16 pause_time = tx_pause ? FSL_FM_PAUSE_TIME_ENABLE :
447 FSL_FM_PAUSE_TIME_DISABLE;
448 u32 tmp;
449
450 tgec_set_tx_pause_frames(tgec, priority: 0, pause_time, thresh_time: 0);
451 tgec_accept_rx_pause_frames(tgec, en: rx_pause);
452 mac_dev->update_speed(mac_dev, speed);
453
454 tmp = ioread32be(&regs->command_config);
455 tmp |= CMD_CFG_RX_EN | CMD_CFG_TX_EN;
456 iowrite32be(tmp, &regs->command_config);
457}
458
459static void tgec_link_down(struct phylink_config *config, unsigned int mode,
460 phy_interface_t interface)
461{
462 struct fman_mac *tgec = fman_config_to_mac(config)->fman_mac;
463 struct tgec_regs __iomem *regs = tgec->regs;
464 u32 tmp;
465
466 tmp = ioread32be(&regs->command_config);
467 tmp &= ~(CMD_CFG_RX_EN | CMD_CFG_TX_EN);
468 iowrite32be(tmp, &regs->command_config);
469}
470
471static const struct phylink_mac_ops tgec_mac_ops = {
472 .mac_config = tgec_mac_config,
473 .mac_link_up = tgec_link_up,
474 .mac_link_down = tgec_link_down,
475};
476
477static int tgec_modify_mac_address(struct fman_mac *tgec,
478 const enet_addr_t *p_enet_addr)
479{
480 tgec->addr = ENET_ADDR_TO_UINT64(*p_enet_addr);
481 set_mac_address(regs: tgec->regs, adr: (const u8 *)(*p_enet_addr));
482
483 return 0;
484}
485
486static int tgec_add_hash_mac_address(struct fman_mac *tgec,
487 enet_addr_t *eth_addr)
488{
489 struct tgec_regs __iomem *regs = tgec->regs;
490 struct eth_hash_entry *hash_entry;
491 u32 crc = 0xFFFFFFFF, hash;
492 u64 addr;
493
494 addr = ENET_ADDR_TO_UINT64(*eth_addr);
495
496 if (!(addr & GROUP_ADDRESS)) {
497 /* Unicast addresses not supported in hash */
498 pr_err("Unicast Address\n");
499 return -EINVAL;
500 }
501 /* CRC calculation */
502 crc = crc32_le(crc, p: (u8 *)eth_addr, ETH_ALEN);
503 crc = bitrev32(crc);
504 /* Take 9 MSB bits */
505 hash = (crc >> TGEC_HASH_MCAST_SHIFT) & TGEC_HASH_ADR_MSK;
506
507 /* Create element to be added to the driver hash table */
508 hash_entry = kmalloc(size: sizeof(*hash_entry), GFP_ATOMIC);
509 if (!hash_entry)
510 return -ENOMEM;
511 hash_entry->addr = addr;
512 INIT_LIST_HEAD(list: &hash_entry->node);
513
514 list_add_tail(new: &hash_entry->node,
515 head: &tgec->multicast_addr_hash->lsts[hash]);
516 iowrite32be((hash | TGEC_HASH_MCAST_EN), &regs->hashtable_ctrl);
517
518 return 0;
519}
520
521static int tgec_set_allmulti(struct fman_mac *tgec, bool enable)
522{
523 u32 entry;
524 struct tgec_regs __iomem *regs = tgec->regs;
525
526 if (enable) {
527 for (entry = 0; entry < TGEC_HASH_TABLE_SIZE; entry++)
528 iowrite32be(entry | TGEC_HASH_MCAST_EN,
529 &regs->hashtable_ctrl);
530 } else {
531 for (entry = 0; entry < TGEC_HASH_TABLE_SIZE; entry++)
532 iowrite32be(entry & ~TGEC_HASH_MCAST_EN,
533 &regs->hashtable_ctrl);
534 }
535
536 tgec->allmulti_enabled = enable;
537
538 return 0;
539}
540
541static int tgec_set_tstamp(struct fman_mac *tgec, bool enable)
542{
543 struct tgec_regs __iomem *regs = tgec->regs;
544 u32 tmp;
545
546 tmp = ioread32be(&regs->command_config);
547
548 if (enable)
549 tmp |= CMD_CFG_EN_TIMESTAMP;
550 else
551 tmp &= ~CMD_CFG_EN_TIMESTAMP;
552
553 iowrite32be(tmp, &regs->command_config);
554
555 return 0;
556}
557
558static int tgec_del_hash_mac_address(struct fman_mac *tgec,
559 enet_addr_t *eth_addr)
560{
561 struct tgec_regs __iomem *regs = tgec->regs;
562 struct eth_hash_entry *hash_entry = NULL;
563 struct list_head *pos;
564 u32 crc = 0xFFFFFFFF, hash;
565 u64 addr;
566
567 addr = ((*(u64 *)eth_addr) >> 16);
568
569 /* CRC calculation */
570 crc = crc32_le(crc, p: (u8 *)eth_addr, ETH_ALEN);
571 crc = bitrev32(crc);
572 /* Take 9 MSB bits */
573 hash = (crc >> TGEC_HASH_MCAST_SHIFT) & TGEC_HASH_ADR_MSK;
574
575 list_for_each(pos, &tgec->multicast_addr_hash->lsts[hash]) {
576 hash_entry = ETH_HASH_ENTRY_OBJ(pos);
577 if (hash_entry && hash_entry->addr == addr) {
578 list_del_init(entry: &hash_entry->node);
579 kfree(objp: hash_entry);
580 break;
581 }
582 }
583
584 if (!tgec->allmulti_enabled) {
585 if (list_empty(head: &tgec->multicast_addr_hash->lsts[hash]))
586 iowrite32be((hash & ~TGEC_HASH_MCAST_EN),
587 &regs->hashtable_ctrl);
588 }
589
590 return 0;
591}
592
593static int tgec_set_exception(struct fman_mac *tgec,
594 enum fman_mac_exceptions exception, bool enable)
595{
596 struct tgec_regs __iomem *regs = tgec->regs;
597 u32 bit_mask = 0;
598
599 bit_mask = get_exception_flag(exception);
600 if (bit_mask) {
601 if (enable)
602 tgec->exceptions |= bit_mask;
603 else
604 tgec->exceptions &= ~bit_mask;
605 } else {
606 pr_err("Undefined exception\n");
607 return -EINVAL;
608 }
609 if (enable)
610 iowrite32be(ioread32be(&regs->imask) | bit_mask, &regs->imask);
611 else
612 iowrite32be(ioread32be(&regs->imask) & ~bit_mask, &regs->imask);
613
614 return 0;
615}
616
617static int tgec_init(struct fman_mac *tgec)
618{
619 struct tgec_cfg *cfg;
620 enet_addr_t eth_addr;
621 int err;
622
623 if (DEFAULT_RESET_ON_INIT &&
624 (fman_reset_mac(fman: tgec->fm, mac_id: tgec->mac_id) != 0)) {
625 pr_err("Can't reset MAC!\n");
626 return -EINVAL;
627 }
628
629 err = check_init_parameters(tgec);
630 if (err)
631 return err;
632
633 cfg = tgec->cfg;
634
635 if (tgec->addr) {
636 MAKE_ENET_ADDR_FROM_UINT64(tgec->addr, eth_addr);
637 set_mac_address(regs: tgec->regs, adr: (const u8 *)eth_addr);
638 }
639
640 /* interrupts */
641 /* FM_10G_REM_N_LCL_FLT_EX_10GMAC_ERRATA_SW005 Errata workaround */
642 if (tgec->fm_rev_info.major <= 2)
643 tgec->exceptions &= ~(TGEC_IMASK_REM_FAULT |
644 TGEC_IMASK_LOC_FAULT);
645
646 err = init(regs: tgec->regs, cfg, exception_mask: tgec->exceptions);
647 if (err) {
648 free_init_resources(tgec);
649 pr_err("TGEC version doesn't support this i/f mode\n");
650 return err;
651 }
652
653 /* Max Frame Length */
654 err = fman_set_mac_max_frame(fman: tgec->fm, mac_id: tgec->mac_id,
655 mfl: cfg->max_frame_length);
656 if (err) {
657 pr_err("Setting max frame length FAILED\n");
658 free_init_resources(tgec);
659 return -EINVAL;
660 }
661
662 /* FM_TX_FIFO_CORRUPTION_ERRATA_10GMAC_A007 Errata workaround */
663 if (tgec->fm_rev_info.major == 2) {
664 struct tgec_regs __iomem *regs = tgec->regs;
665 u32 tmp;
666
667 /* restore the default tx ipg Length */
668 tmp = (ioread32be(&regs->tx_ipg_len) &
669 ~TGEC_TX_IPG_LENGTH_MASK) | 12;
670
671 iowrite32be(tmp, &regs->tx_ipg_len);
672 }
673
674 tgec->multicast_addr_hash = alloc_hash_table(TGEC_HASH_TABLE_SIZE);
675 if (!tgec->multicast_addr_hash) {
676 free_init_resources(tgec);
677 pr_err("allocation hash table is FAILED\n");
678 return -ENOMEM;
679 }
680
681 tgec->unicast_addr_hash = alloc_hash_table(TGEC_HASH_TABLE_SIZE);
682 if (!tgec->unicast_addr_hash) {
683 free_init_resources(tgec);
684 pr_err("allocation hash table is FAILED\n");
685 return -ENOMEM;
686 }
687
688 fman_register_intr(fman: tgec->fm, mod: FMAN_MOD_MAC, mod_id: tgec->mac_id,
689 intr_type: FMAN_INTR_TYPE_ERR, f_isr: tgec_err_exception, h_src_arg: tgec);
690
691 kfree(objp: cfg);
692 tgec->cfg = NULL;
693
694 return 0;
695}
696
697static int tgec_free(struct fman_mac *tgec)
698{
699 free_init_resources(tgec);
700
701 kfree(objp: tgec->cfg);
702 kfree(objp: tgec);
703
704 return 0;
705}
706
707static struct fman_mac *tgec_config(struct mac_device *mac_dev,
708 struct fman_mac_params *params)
709{
710 struct fman_mac *tgec;
711 struct tgec_cfg *cfg;
712
713 /* allocate memory for the UCC GETH data structure. */
714 tgec = kzalloc(size: sizeof(*tgec), GFP_KERNEL);
715 if (!tgec)
716 return NULL;
717
718 /* allocate memory for the 10G MAC driver parameters data structure. */
719 cfg = kzalloc(size: sizeof(*cfg), GFP_KERNEL);
720 if (!cfg) {
721 tgec_free(tgec);
722 return NULL;
723 }
724
725 /* Plant parameter structure pointer */
726 tgec->cfg = cfg;
727
728 set_dflts(cfg);
729
730 tgec->regs = mac_dev->vaddr;
731 tgec->addr = ENET_ADDR_TO_UINT64(mac_dev->addr);
732 tgec->mac_id = params->mac_id;
733 tgec->exceptions = (TGEC_IMASK_MDIO_SCAN_EVENT |
734 TGEC_IMASK_REM_FAULT |
735 TGEC_IMASK_LOC_FAULT |
736 TGEC_IMASK_TX_ECC_ER |
737 TGEC_IMASK_TX_FIFO_UNFL |
738 TGEC_IMASK_TX_FIFO_OVFL |
739 TGEC_IMASK_TX_ER |
740 TGEC_IMASK_RX_FIFO_OVFL |
741 TGEC_IMASK_RX_ECC_ER |
742 TGEC_IMASK_RX_JAB_FRM |
743 TGEC_IMASK_RX_OVRSZ_FRM |
744 TGEC_IMASK_RX_RUNT_FRM |
745 TGEC_IMASK_RX_FRAG_FRM |
746 TGEC_IMASK_RX_CRC_ER |
747 TGEC_IMASK_RX_ALIGN_ER);
748 tgec->exception_cb = params->exception_cb;
749 tgec->event_cb = params->event_cb;
750 tgec->dev_id = mac_dev;
751 tgec->fm = params->fm;
752
753 /* Save FMan revision */
754 fman_get_revision(fman: tgec->fm, rev_info: &tgec->fm_rev_info);
755
756 return tgec;
757}
758
759int tgec_initialization(struct mac_device *mac_dev,
760 struct device_node *mac_node,
761 struct fman_mac_params *params)
762{
763 int err;
764 struct fman_mac *tgec;
765
766 mac_dev->phylink_ops = &tgec_mac_ops;
767 mac_dev->set_promisc = tgec_set_promiscuous;
768 mac_dev->change_addr = tgec_modify_mac_address;
769 mac_dev->add_hash_mac_addr = tgec_add_hash_mac_address;
770 mac_dev->remove_hash_mac_addr = tgec_del_hash_mac_address;
771 mac_dev->set_exception = tgec_set_exception;
772 mac_dev->set_allmulti = tgec_set_allmulti;
773 mac_dev->set_tstamp = tgec_set_tstamp;
774 mac_dev->set_multi = fman_set_multi;
775 mac_dev->enable = tgec_enable;
776 mac_dev->disable = tgec_disable;
777
778 mac_dev->fman_mac = tgec_config(mac_dev, params);
779 if (!mac_dev->fman_mac) {
780 err = -EINVAL;
781 goto _return;
782 }
783
784 /* The internal connection to the serdes is XGMII, but this isn't
785 * really correct for the phy mode (which is the external connection).
786 * However, this is how all older device trees say that they want
787 * XAUI, so just convert it for them.
788 */
789 if (mac_dev->phy_if == PHY_INTERFACE_MODE_XGMII)
790 mac_dev->phy_if = PHY_INTERFACE_MODE_XAUI;
791
792 __set_bit(PHY_INTERFACE_MODE_XAUI,
793 mac_dev->phylink_config.supported_interfaces);
794 mac_dev->phylink_config.mac_capabilities =
795 MAC_SYM_PAUSE | MAC_ASYM_PAUSE | MAC_10000FD;
796
797 tgec = mac_dev->fman_mac;
798 tgec->cfg->max_frame_length = fman_get_max_frm();
799 err = tgec_init(tgec);
800 if (err < 0)
801 goto _return_fm_mac_free;
802
803 /* For 10G MAC, disable Tx ECC exception */
804 err = tgec_set_exception(tgec, exception: FM_MAC_EX_10G_TX_ECC_ER, enable: false);
805 if (err < 0)
806 goto _return_fm_mac_free;
807
808 pr_info("FMan XGEC version: 0x%08x\n",
809 ioread32be(&tgec->regs->tgec_id));
810 goto _return;
811
812_return_fm_mac_free:
813 tgec_free(tgec: mac_dev->fman_mac);
814
815_return:
816 return err;
817}
818

source code of linux/drivers/net/ethernet/freescale/fman/fman_tgec.c