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_dtsec.h"
36 #include "fman.h"
37
38 #include <linux/slab.h>
39 #include <linux/bitrev.h>
40 #include <linux/io.h>
41 #include <linux/delay.h>
42 #include <linux/phy.h>
43 #include <linux/crc32.h>
44 #include <linux/of_mdio.h>
45 #include <linux/mii.h>
46
47 /* TBI register addresses */
48 #define MII_TBICON 0x11
49
50 /* TBICON register bit fields */
51 #define TBICON_SOFT_RESET 0x8000 /* Soft reset */
52 #define TBICON_DISABLE_RX_DIS 0x2000 /* Disable receive disparity */
53 #define TBICON_DISABLE_TX_DIS 0x1000 /* Disable transmit disparity */
54 #define TBICON_AN_SENSE 0x0100 /* Auto-negotiation sense enable */
55 #define TBICON_CLK_SELECT 0x0020 /* Clock select */
56 #define TBICON_MI_MODE 0x0010 /* GMII mode (TBI if not set) */
57
58 #define TBIANA_SGMII 0x4001
59 #define TBIANA_1000X 0x01a0
60
61 /* Interrupt Mask Register (IMASK) */
62 #define DTSEC_IMASK_BREN 0x80000000
63 #define DTSEC_IMASK_RXCEN 0x40000000
64 #define DTSEC_IMASK_MSROEN 0x04000000
65 #define DTSEC_IMASK_GTSCEN 0x02000000
66 #define DTSEC_IMASK_BTEN 0x01000000
67 #define DTSEC_IMASK_TXCEN 0x00800000
68 #define DTSEC_IMASK_TXEEN 0x00400000
69 #define DTSEC_IMASK_LCEN 0x00040000
70 #define DTSEC_IMASK_CRLEN 0x00020000
71 #define DTSEC_IMASK_XFUNEN 0x00010000
72 #define DTSEC_IMASK_ABRTEN 0x00008000
73 #define DTSEC_IMASK_IFERREN 0x00004000
74 #define DTSEC_IMASK_MAGEN 0x00000800
75 #define DTSEC_IMASK_MMRDEN 0x00000400
76 #define DTSEC_IMASK_MMWREN 0x00000200
77 #define DTSEC_IMASK_GRSCEN 0x00000100
78 #define DTSEC_IMASK_TDPEEN 0x00000002
79 #define DTSEC_IMASK_RDPEEN 0x00000001
80
81 #define DTSEC_EVENTS_MASK \
82 ((u32)(DTSEC_IMASK_BREN | \
83 DTSEC_IMASK_RXCEN | \
84 DTSEC_IMASK_BTEN | \
85 DTSEC_IMASK_TXCEN | \
86 DTSEC_IMASK_TXEEN | \
87 DTSEC_IMASK_ABRTEN | \
88 DTSEC_IMASK_LCEN | \
89 DTSEC_IMASK_CRLEN | \
90 DTSEC_IMASK_XFUNEN | \
91 DTSEC_IMASK_IFERREN | \
92 DTSEC_IMASK_MAGEN | \
93 DTSEC_IMASK_TDPEEN | \
94 DTSEC_IMASK_RDPEEN))
95
96 /* dtsec timestamp event bits */
97 #define TMR_PEMASK_TSREEN 0x00010000
98 #define TMR_PEVENT_TSRE 0x00010000
99
100 /* Group address bit indication */
101 #define MAC_GROUP_ADDRESS 0x0000010000000000ULL
102
103 /* Defaults */
104 #define DEFAULT_HALFDUP_RETRANSMIT 0xf
105 #define DEFAULT_HALFDUP_COLL_WINDOW 0x37
106 #define DEFAULT_TX_PAUSE_TIME 0xf000
107 #define DEFAULT_RX_PREPEND 0
108 #define DEFAULT_PREAMBLE_LEN 7
109 #define DEFAULT_TX_PAUSE_TIME_EXTD 0
110 #define DEFAULT_NON_BACK_TO_BACK_IPG1 0x40
111 #define DEFAULT_NON_BACK_TO_BACK_IPG2 0x60
112 #define DEFAULT_MIN_IFG_ENFORCEMENT 0x50
113 #define DEFAULT_BACK_TO_BACK_IPG 0x60
114 #define DEFAULT_MAXIMUM_FRAME 0x600
115
116 /* register related defines (bits, field offsets..) */
117 #define DTSEC_ID2_INT_REDUCED_OFF 0x00010000
118
119 #define DTSEC_ECNTRL_GMIIM 0x00000040
120 #define DTSEC_ECNTRL_TBIM 0x00000020
121 #define DTSEC_ECNTRL_SGMIIM 0x00000002
122 #define DTSEC_ECNTRL_RPM 0x00000010
123 #define DTSEC_ECNTRL_R100M 0x00000008
124 #define DTSEC_ECNTRL_QSGMIIM 0x00000001
125
126 #define TCTRL_TTSE 0x00000040
127 #define TCTRL_GTS 0x00000020
128
129 #define RCTRL_PAL_MASK 0x001f0000
130 #define RCTRL_PAL_SHIFT 16
131 #define RCTRL_GHTX 0x00000400
132 #define RCTRL_RTSE 0x00000040
133 #define RCTRL_GRS 0x00000020
134 #define RCTRL_MPROM 0x00000008
135 #define RCTRL_RSF 0x00000004
136 #define RCTRL_UPROM 0x00000001
137
138 #define MACCFG1_SOFT_RESET 0x80000000
139 #define MACCFG1_RX_FLOW 0x00000020
140 #define MACCFG1_TX_FLOW 0x00000010
141 #define MACCFG1_TX_EN 0x00000001
142 #define MACCFG1_RX_EN 0x00000004
143
144 #define MACCFG2_NIBBLE_MODE 0x00000100
145 #define MACCFG2_BYTE_MODE 0x00000200
146 #define MACCFG2_PAD_CRC_EN 0x00000004
147 #define MACCFG2_FULL_DUPLEX 0x00000001
148 #define MACCFG2_PREAMBLE_LENGTH_MASK 0x0000f000
149 #define MACCFG2_PREAMBLE_LENGTH_SHIFT 12
150
151 #define IPGIFG_NON_BACK_TO_BACK_IPG_1_SHIFT 24
152 #define IPGIFG_NON_BACK_TO_BACK_IPG_2_SHIFT 16
153 #define IPGIFG_MIN_IFG_ENFORCEMENT_SHIFT 8
154
155 #define IPGIFG_NON_BACK_TO_BACK_IPG_1 0x7F000000
156 #define IPGIFG_NON_BACK_TO_BACK_IPG_2 0x007F0000
157 #define IPGIFG_MIN_IFG_ENFORCEMENT 0x0000FF00
158 #define IPGIFG_BACK_TO_BACK_IPG 0x0000007F
159
160 #define HAFDUP_EXCESS_DEFER 0x00010000
161 #define HAFDUP_COLLISION_WINDOW 0x000003ff
162 #define HAFDUP_RETRANSMISSION_MAX_SHIFT 12
163 #define HAFDUP_RETRANSMISSION_MAX 0x0000f000
164
165 #define NUM_OF_HASH_REGS 8 /* Number of hash table registers */
166
167 #define PTV_PTE_MASK 0xffff0000
168 #define PTV_PT_MASK 0x0000ffff
169 #define PTV_PTE_SHIFT 16
170
171 #define MAX_PACKET_ALIGNMENT 31
172 #define MAX_INTER_PACKET_GAP 0x7f
173 #define MAX_RETRANSMISSION 0x0f
174 #define MAX_COLLISION_WINDOW 0x03ff
175
176 /* Hash table size (32 bits*8 regs) */
177 #define DTSEC_HASH_TABLE_SIZE 256
178 /* Extended Hash table size (32 bits*16 regs) */
179 #define EXTENDED_HASH_TABLE_SIZE 512
180
181 /* dTSEC Memory Map registers */
182 struct dtsec_regs {
183 /* dTSEC General Control and Status Registers */
184 u32 tsec_id; /* 0x000 ETSEC_ID register */
185 u32 tsec_id2; /* 0x004 ETSEC_ID2 register */
186 u32 ievent; /* 0x008 Interrupt event register */
187 u32 imask; /* 0x00C Interrupt mask register */
188 u32 reserved0010[1];
189 u32 ecntrl; /* 0x014 E control register */
190 u32 ptv; /* 0x018 Pause time value register */
191 u32 tbipa; /* 0x01C TBI PHY address register */
192 u32 tmr_ctrl; /* 0x020 Time-stamp Control register */
193 u32 tmr_pevent; /* 0x024 Time-stamp event register */
194 u32 tmr_pemask; /* 0x028 Timer event mask register */
195 u32 reserved002c[5];
196 u32 tctrl; /* 0x040 Transmit control register */
197 u32 reserved0044[3];
198 u32 rctrl; /* 0x050 Receive control register */
199 u32 reserved0054[11];
200 u32 igaddr[8]; /* 0x080-0x09C Individual/group address */
201 u32 gaddr[8]; /* 0x0A0-0x0BC Group address registers 0-7 */
202 u32 reserved00c0[16];
203 u32 maccfg1; /* 0x100 MAC configuration #1 */
204 u32 maccfg2; /* 0x104 MAC configuration #2 */
205 u32 ipgifg; /* 0x108 IPG/IFG */
206 u32 hafdup; /* 0x10C Half-duplex */
207 u32 maxfrm; /* 0x110 Maximum frame */
208 u32 reserved0114[10];
209 u32 ifstat; /* 0x13C Interface status */
210 u32 macstnaddr1; /* 0x140 Station Address,part 1 */
211 u32 macstnaddr2; /* 0x144 Station Address,part 2 */
212 struct {
213 u32 exact_match1; /* octets 1-4 */
214 u32 exact_match2; /* octets 5-6 */
215 } macaddr[15]; /* 0x148-0x1BC mac exact match addresses 1-15 */
216 u32 reserved01c0[16];
217 u32 tr64; /* 0x200 Tx and Rx 64 byte frame counter */
218 u32 tr127; /* 0x204 Tx and Rx 65 to 127 byte frame counter */
219 u32 tr255; /* 0x208 Tx and Rx 128 to 255 byte frame counter */
220 u32 tr511; /* 0x20C Tx and Rx 256 to 511 byte frame counter */
221 u32 tr1k; /* 0x210 Tx and Rx 512 to 1023 byte frame counter */
222 u32 trmax; /* 0x214 Tx and Rx 1024 to 1518 byte frame counter */
223 u32 trmgv;
224 /* 0x218 Tx and Rx 1519 to 1522 byte good VLAN frame count */
225 u32 rbyt; /* 0x21C receive byte counter */
226 u32 rpkt; /* 0x220 receive packet counter */
227 u32 rfcs; /* 0x224 receive FCS error counter */
228 u32 rmca; /* 0x228 RMCA Rx multicast packet counter */
229 u32 rbca; /* 0x22C Rx broadcast packet counter */
230 u32 rxcf; /* 0x230 Rx control frame packet counter */
231 u32 rxpf; /* 0x234 Rx pause frame packet counter */
232 u32 rxuo; /* 0x238 Rx unknown OP code counter */
233 u32 raln; /* 0x23C Rx alignment error counter */
234 u32 rflr; /* 0x240 Rx frame length error counter */
235 u32 rcde; /* 0x244 Rx code error counter */
236 u32 rcse; /* 0x248 Rx carrier sense error counter */
237 u32 rund; /* 0x24C Rx undersize packet counter */
238 u32 rovr; /* 0x250 Rx oversize packet counter */
239 u32 rfrg; /* 0x254 Rx fragments counter */
240 u32 rjbr; /* 0x258 Rx jabber counter */
241 u32 rdrp; /* 0x25C Rx drop */
242 u32 tbyt; /* 0x260 Tx byte counter */
243 u32 tpkt; /* 0x264 Tx packet counter */
244 u32 tmca; /* 0x268 Tx multicast packet counter */
245 u32 tbca; /* 0x26C Tx broadcast packet counter */
246 u32 txpf; /* 0x270 Tx pause control frame counter */
247 u32 tdfr; /* 0x274 Tx deferral packet counter */
248 u32 tedf; /* 0x278 Tx excessive deferral packet counter */
249 u32 tscl; /* 0x27C Tx single collision packet counter */
250 u32 tmcl; /* 0x280 Tx multiple collision packet counter */
251 u32 tlcl; /* 0x284 Tx late collision packet counter */
252 u32 txcl; /* 0x288 Tx excessive collision packet counter */
253 u32 tncl; /* 0x28C Tx total collision counter */
254 u32 reserved0290[1];
255 u32 tdrp; /* 0x294 Tx drop frame counter */
256 u32 tjbr; /* 0x298 Tx jabber frame counter */
257 u32 tfcs; /* 0x29C Tx FCS error counter */
258 u32 txcf; /* 0x2A0 Tx control frame counter */
259 u32 tovr; /* 0x2A4 Tx oversize frame counter */
260 u32 tund; /* 0x2A8 Tx undersize frame counter */
261 u32 tfrg; /* 0x2AC Tx fragments frame counter */
262 u32 car1; /* 0x2B0 carry register one register* */
263 u32 car2; /* 0x2B4 carry register two register* */
264 u32 cam1; /* 0x2B8 carry register one mask register */
265 u32 cam2; /* 0x2BC carry register two mask register */
266 u32 reserved02c0[848];
267 };
268
269 /* struct dtsec_cfg - dTSEC configuration
270 * Transmit half-duplex flow control, under software control for 10/100-Mbps
271 * half-duplex media. If set, back pressure is applied to media by raising
272 * carrier.
273 * halfdup_retransmit:
274 * Number of retransmission attempts following a collision.
275 * If this is exceeded dTSEC aborts transmission due to excessive collisions.
276 * The standard specifies the attempt limit to be 15.
277 * halfdup_coll_window:
278 * The number of bytes of the frame during which collisions may occur.
279 * The default value of 55 corresponds to the frame byte at the end of the
280 * standard 512-bit slot time window. If collisions are detected after this
281 * byte, the late collision event is asserted and transmission of current
282 * frame is aborted.
283 * tx_pad_crc:
284 * Pad and append CRC. If set, the MAC pads all ransmitted short frames and
285 * appends a CRC to every frame regardless of padding requirement.
286 * tx_pause_time:
287 * Transmit pause time value. This pause value is used as part of the pause
288 * frame to be sent when a transmit pause frame is initiated.
289 * If set to 0 this disables transmission of pause frames.
290 * preamble_len:
291 * Length, in bytes, of the preamble field preceding each Ethernet
292 * start-of-frame delimiter byte. The default value of 0x7 should be used in
293 * order to guarantee reliable operation with IEEE 802.3 compliant hardware.
294 * rx_prepend:
295 * Packet alignment padding length. The specified number of bytes (1-31)
296 * of zero padding are inserted before the start of each received frame.
297 * For Ethernet, where optional preamble extraction is enabled, the padding
298 * appears before the preamble, otherwise the padding precedes the
299 * layer 2 header.
300 *
301 * This structure contains basic dTSEC configuration and must be passed to
302 * init() function. A default set of configuration values can be
303 * obtained by calling set_dflts().
304 */
305 struct dtsec_cfg {
306 u16 halfdup_retransmit;
307 u16 halfdup_coll_window;
308 bool tx_pad_crc;
309 u16 tx_pause_time;
310 bool ptp_tsu_en;
311 bool ptp_exception_en;
312 u32 preamble_len;
313 u32 rx_prepend;
314 u16 tx_pause_time_extd;
315 u16 maximum_frame;
316 u32 non_back_to_back_ipg1;
317 u32 non_back_to_back_ipg2;
318 u32 min_ifg_enforcement;
319 u32 back_to_back_ipg;
320 };
321
322 struct fman_mac {
323 /* pointer to dTSEC memory mapped registers */
324 struct dtsec_regs __iomem *regs;
325 /* MAC address of device */
326 u64 addr;
327 /* Ethernet physical interface */
328 phy_interface_t phy_if;
329 u16 max_speed;
330 void *dev_id; /* device cookie used by the exception cbs */
331 fman_mac_exception_cb *exception_cb;
332 fman_mac_exception_cb *event_cb;
333 /* Number of individual addresses in registers for this station */
334 u8 num_of_ind_addr_in_regs;
335 /* pointer to driver's global address hash table */
336 struct eth_hash_t *multicast_addr_hash;
337 /* pointer to driver's individual address hash table */
338 struct eth_hash_t *unicast_addr_hash;
339 u8 mac_id;
340 u32 exceptions;
341 bool ptp_tsu_enabled;
342 bool en_tsu_err_exception;
343 struct dtsec_cfg *dtsec_drv_param;
344 void *fm;
345 struct fman_rev_info fm_rev_info;
346 bool basex_if;
347 struct phy_device *tbiphy;
348 };
349
set_dflts(struct dtsec_cfg * cfg)350 static void set_dflts(struct dtsec_cfg *cfg)
351 {
352 cfg->halfdup_retransmit = DEFAULT_HALFDUP_RETRANSMIT;
353 cfg->halfdup_coll_window = DEFAULT_HALFDUP_COLL_WINDOW;
354 cfg->tx_pad_crc = true;
355 cfg->tx_pause_time = DEFAULT_TX_PAUSE_TIME;
356 /* PHY address 0 is reserved (DPAA RM) */
357 cfg->rx_prepend = DEFAULT_RX_PREPEND;
358 cfg->ptp_tsu_en = true;
359 cfg->ptp_exception_en = true;
360 cfg->preamble_len = DEFAULT_PREAMBLE_LEN;
361 cfg->tx_pause_time_extd = DEFAULT_TX_PAUSE_TIME_EXTD;
362 cfg->non_back_to_back_ipg1 = DEFAULT_NON_BACK_TO_BACK_IPG1;
363 cfg->non_back_to_back_ipg2 = DEFAULT_NON_BACK_TO_BACK_IPG2;
364 cfg->min_ifg_enforcement = DEFAULT_MIN_IFG_ENFORCEMENT;
365 cfg->back_to_back_ipg = DEFAULT_BACK_TO_BACK_IPG;
366 cfg->maximum_frame = DEFAULT_MAXIMUM_FRAME;
367 }
368
set_mac_address(struct dtsec_regs __iomem * regs,u8 * adr)369 static void set_mac_address(struct dtsec_regs __iomem *regs, u8 *adr)
370 {
371 u32 tmp;
372
373 tmp = (u32)((adr[5] << 24) |
374 (adr[4] << 16) | (adr[3] << 8) | adr[2]);
375 iowrite32be(tmp, ®s->macstnaddr1);
376
377 tmp = (u32)((adr[1] << 24) | (adr[0] << 16));
378 iowrite32be(tmp, ®s->macstnaddr2);
379 }
380
init(struct dtsec_regs __iomem * regs,struct dtsec_cfg * cfg,phy_interface_t iface,u16 iface_speed,u64 addr,u32 exception_mask,u8 tbi_addr)381 static int init(struct dtsec_regs __iomem *regs, struct dtsec_cfg *cfg,
382 phy_interface_t iface, u16 iface_speed, u64 addr,
383 u32 exception_mask, u8 tbi_addr)
384 {
385 bool is_rgmii, is_sgmii, is_qsgmii;
386 enet_addr_t eth_addr;
387 u32 tmp;
388 int i;
389
390 /* Soft reset */
391 iowrite32be(MACCFG1_SOFT_RESET, ®s->maccfg1);
392 iowrite32be(0, ®s->maccfg1);
393
394 /* dtsec_id2 */
395 tmp = ioread32be(®s->tsec_id2);
396
397 /* check RGMII support */
398 if (iface == PHY_INTERFACE_MODE_RGMII ||
399 iface == PHY_INTERFACE_MODE_RGMII_ID ||
400 iface == PHY_INTERFACE_MODE_RGMII_RXID ||
401 iface == PHY_INTERFACE_MODE_RGMII_TXID ||
402 iface == PHY_INTERFACE_MODE_RMII)
403 if (tmp & DTSEC_ID2_INT_REDUCED_OFF)
404 return -EINVAL;
405
406 if (iface == PHY_INTERFACE_MODE_SGMII ||
407 iface == PHY_INTERFACE_MODE_MII)
408 if (tmp & DTSEC_ID2_INT_REDUCED_OFF)
409 return -EINVAL;
410
411 is_rgmii = iface == PHY_INTERFACE_MODE_RGMII ||
412 iface == PHY_INTERFACE_MODE_RGMII_ID ||
413 iface == PHY_INTERFACE_MODE_RGMII_RXID ||
414 iface == PHY_INTERFACE_MODE_RGMII_TXID;
415 is_sgmii = iface == PHY_INTERFACE_MODE_SGMII;
416 is_qsgmii = iface == PHY_INTERFACE_MODE_QSGMII;
417
418 tmp = 0;
419 if (is_rgmii || iface == PHY_INTERFACE_MODE_GMII)
420 tmp |= DTSEC_ECNTRL_GMIIM;
421 if (is_sgmii)
422 tmp |= (DTSEC_ECNTRL_SGMIIM | DTSEC_ECNTRL_TBIM);
423 if (is_qsgmii)
424 tmp |= (DTSEC_ECNTRL_SGMIIM | DTSEC_ECNTRL_TBIM |
425 DTSEC_ECNTRL_QSGMIIM);
426 if (is_rgmii)
427 tmp |= DTSEC_ECNTRL_RPM;
428 if (iface_speed == SPEED_100)
429 tmp |= DTSEC_ECNTRL_R100M;
430
431 iowrite32be(tmp, ®s->ecntrl);
432
433 tmp = 0;
434
435 if (cfg->tx_pause_time)
436 tmp |= cfg->tx_pause_time;
437 if (cfg->tx_pause_time_extd)
438 tmp |= cfg->tx_pause_time_extd << PTV_PTE_SHIFT;
439 iowrite32be(tmp, ®s->ptv);
440
441 tmp = 0;
442 tmp |= (cfg->rx_prepend << RCTRL_PAL_SHIFT) & RCTRL_PAL_MASK;
443 /* Accept short frames */
444 tmp |= RCTRL_RSF;
445
446 iowrite32be(tmp, ®s->rctrl);
447
448 /* Assign a Phy Address to the TBI (TBIPA).
449 * Done also in cases where TBI is not selected to avoid conflict with
450 * the external PHY's Physical address
451 */
452 iowrite32be(tbi_addr, ®s->tbipa);
453
454 iowrite32be(0, ®s->tmr_ctrl);
455
456 if (cfg->ptp_tsu_en) {
457 tmp = 0;
458 tmp |= TMR_PEVENT_TSRE;
459 iowrite32be(tmp, ®s->tmr_pevent);
460
461 if (cfg->ptp_exception_en) {
462 tmp = 0;
463 tmp |= TMR_PEMASK_TSREEN;
464 iowrite32be(tmp, ®s->tmr_pemask);
465 }
466 }
467
468 tmp = 0;
469 tmp |= MACCFG1_RX_FLOW;
470 tmp |= MACCFG1_TX_FLOW;
471 iowrite32be(tmp, ®s->maccfg1);
472
473 tmp = 0;
474
475 if (iface_speed < SPEED_1000)
476 tmp |= MACCFG2_NIBBLE_MODE;
477 else if (iface_speed == SPEED_1000)
478 tmp |= MACCFG2_BYTE_MODE;
479
480 tmp |= (cfg->preamble_len << MACCFG2_PREAMBLE_LENGTH_SHIFT) &
481 MACCFG2_PREAMBLE_LENGTH_MASK;
482 if (cfg->tx_pad_crc)
483 tmp |= MACCFG2_PAD_CRC_EN;
484 /* Full Duplex */
485 tmp |= MACCFG2_FULL_DUPLEX;
486 iowrite32be(tmp, ®s->maccfg2);
487
488 tmp = (((cfg->non_back_to_back_ipg1 <<
489 IPGIFG_NON_BACK_TO_BACK_IPG_1_SHIFT)
490 & IPGIFG_NON_BACK_TO_BACK_IPG_1)
491 | ((cfg->non_back_to_back_ipg2 <<
492 IPGIFG_NON_BACK_TO_BACK_IPG_2_SHIFT)
493 & IPGIFG_NON_BACK_TO_BACK_IPG_2)
494 | ((cfg->min_ifg_enforcement << IPGIFG_MIN_IFG_ENFORCEMENT_SHIFT)
495 & IPGIFG_MIN_IFG_ENFORCEMENT)
496 | (cfg->back_to_back_ipg & IPGIFG_BACK_TO_BACK_IPG));
497 iowrite32be(tmp, ®s->ipgifg);
498
499 tmp = 0;
500 tmp |= HAFDUP_EXCESS_DEFER;
501 tmp |= ((cfg->halfdup_retransmit << HAFDUP_RETRANSMISSION_MAX_SHIFT)
502 & HAFDUP_RETRANSMISSION_MAX);
503 tmp |= (cfg->halfdup_coll_window & HAFDUP_COLLISION_WINDOW);
504
505 iowrite32be(tmp, ®s->hafdup);
506
507 /* Initialize Maximum frame length */
508 iowrite32be(cfg->maximum_frame, ®s->maxfrm);
509
510 iowrite32be(0xffffffff, ®s->cam1);
511 iowrite32be(0xffffffff, ®s->cam2);
512
513 iowrite32be(exception_mask, ®s->imask);
514
515 iowrite32be(0xffffffff, ®s->ievent);
516
517 if (addr) {
518 MAKE_ENET_ADDR_FROM_UINT64(addr, eth_addr);
519 set_mac_address(regs, (u8 *)eth_addr);
520 }
521
522 /* HASH */
523 for (i = 0; i < NUM_OF_HASH_REGS; i++) {
524 /* Initialize IADDRx */
525 iowrite32be(0, ®s->igaddr[i]);
526 /* Initialize GADDRx */
527 iowrite32be(0, ®s->gaddr[i]);
528 }
529
530 return 0;
531 }
532
set_bucket(struct dtsec_regs __iomem * regs,int bucket,bool enable)533 static void set_bucket(struct dtsec_regs __iomem *regs, int bucket,
534 bool enable)
535 {
536 int reg_idx = (bucket >> 5) & 0xf;
537 int bit_idx = bucket & 0x1f;
538 u32 bit_mask = 0x80000000 >> bit_idx;
539 u32 __iomem *reg;
540
541 if (reg_idx > 7)
542 reg = ®s->gaddr[reg_idx - 8];
543 else
544 reg = ®s->igaddr[reg_idx];
545
546 if (enable)
547 iowrite32be(ioread32be(reg) | bit_mask, reg);
548 else
549 iowrite32be(ioread32be(reg) & (~bit_mask), reg);
550 }
551
check_init_parameters(struct fman_mac * dtsec)552 static int check_init_parameters(struct fman_mac *dtsec)
553 {
554 if (dtsec->max_speed >= SPEED_10000) {
555 pr_err("1G MAC driver supports 1G or lower speeds\n");
556 return -EINVAL;
557 }
558 if ((dtsec->dtsec_drv_param)->rx_prepend >
559 MAX_PACKET_ALIGNMENT) {
560 pr_err("packetAlignmentPadding can't be > than %d\n",
561 MAX_PACKET_ALIGNMENT);
562 return -EINVAL;
563 }
564 if (((dtsec->dtsec_drv_param)->non_back_to_back_ipg1 >
565 MAX_INTER_PACKET_GAP) ||
566 ((dtsec->dtsec_drv_param)->non_back_to_back_ipg2 >
567 MAX_INTER_PACKET_GAP) ||
568 ((dtsec->dtsec_drv_param)->back_to_back_ipg >
569 MAX_INTER_PACKET_GAP)) {
570 pr_err("Inter packet gap can't be greater than %d\n",
571 MAX_INTER_PACKET_GAP);
572 return -EINVAL;
573 }
574 if ((dtsec->dtsec_drv_param)->halfdup_retransmit >
575 MAX_RETRANSMISSION) {
576 pr_err("maxRetransmission can't be greater than %d\n",
577 MAX_RETRANSMISSION);
578 return -EINVAL;
579 }
580 if ((dtsec->dtsec_drv_param)->halfdup_coll_window >
581 MAX_COLLISION_WINDOW) {
582 pr_err("collisionWindow can't be greater than %d\n",
583 MAX_COLLISION_WINDOW);
584 return -EINVAL;
585 /* If Auto negotiation process is disabled, need to set up the PHY
586 * using the MII Management Interface
587 */
588 }
589 if (!dtsec->exception_cb) {
590 pr_err("uninitialized exception_cb\n");
591 return -EINVAL;
592 }
593 if (!dtsec->event_cb) {
594 pr_err("uninitialized event_cb\n");
595 return -EINVAL;
596 }
597
598 return 0;
599 }
600
get_exception_flag(enum fman_mac_exceptions exception)601 static int get_exception_flag(enum fman_mac_exceptions exception)
602 {
603 u32 bit_mask;
604
605 switch (exception) {
606 case FM_MAC_EX_1G_BAB_RX:
607 bit_mask = DTSEC_IMASK_BREN;
608 break;
609 case FM_MAC_EX_1G_RX_CTL:
610 bit_mask = DTSEC_IMASK_RXCEN;
611 break;
612 case FM_MAC_EX_1G_GRATEFUL_TX_STP_COMPLET:
613 bit_mask = DTSEC_IMASK_GTSCEN;
614 break;
615 case FM_MAC_EX_1G_BAB_TX:
616 bit_mask = DTSEC_IMASK_BTEN;
617 break;
618 case FM_MAC_EX_1G_TX_CTL:
619 bit_mask = DTSEC_IMASK_TXCEN;
620 break;
621 case FM_MAC_EX_1G_TX_ERR:
622 bit_mask = DTSEC_IMASK_TXEEN;
623 break;
624 case FM_MAC_EX_1G_LATE_COL:
625 bit_mask = DTSEC_IMASK_LCEN;
626 break;
627 case FM_MAC_EX_1G_COL_RET_LMT:
628 bit_mask = DTSEC_IMASK_CRLEN;
629 break;
630 case FM_MAC_EX_1G_TX_FIFO_UNDRN:
631 bit_mask = DTSEC_IMASK_XFUNEN;
632 break;
633 case FM_MAC_EX_1G_MAG_PCKT:
634 bit_mask = DTSEC_IMASK_MAGEN;
635 break;
636 case FM_MAC_EX_1G_MII_MNG_RD_COMPLET:
637 bit_mask = DTSEC_IMASK_MMRDEN;
638 break;
639 case FM_MAC_EX_1G_MII_MNG_WR_COMPLET:
640 bit_mask = DTSEC_IMASK_MMWREN;
641 break;
642 case FM_MAC_EX_1G_GRATEFUL_RX_STP_COMPLET:
643 bit_mask = DTSEC_IMASK_GRSCEN;
644 break;
645 case FM_MAC_EX_1G_DATA_ERR:
646 bit_mask = DTSEC_IMASK_TDPEEN;
647 break;
648 case FM_MAC_EX_1G_RX_MIB_CNT_OVFL:
649 bit_mask = DTSEC_IMASK_MSROEN;
650 break;
651 default:
652 bit_mask = 0;
653 break;
654 }
655
656 return bit_mask;
657 }
658
is_init_done(struct dtsec_cfg * dtsec_drv_params)659 static bool is_init_done(struct dtsec_cfg *dtsec_drv_params)
660 {
661 /* Checks if dTSEC driver parameters were initialized */
662 if (!dtsec_drv_params)
663 return true;
664
665 return false;
666 }
667
dtsec_get_max_frame_length(struct fman_mac * dtsec)668 static u16 dtsec_get_max_frame_length(struct fman_mac *dtsec)
669 {
670 struct dtsec_regs __iomem *regs = dtsec->regs;
671
672 if (is_init_done(dtsec->dtsec_drv_param))
673 return 0;
674
675 return (u16)ioread32be(®s->maxfrm);
676 }
677
dtsec_isr(void * handle)678 static void dtsec_isr(void *handle)
679 {
680 struct fman_mac *dtsec = (struct fman_mac *)handle;
681 struct dtsec_regs __iomem *regs = dtsec->regs;
682 u32 event;
683
684 /* do not handle MDIO events */
685 event = ioread32be(®s->ievent) &
686 (u32)(~(DTSEC_IMASK_MMRDEN | DTSEC_IMASK_MMWREN));
687
688 event &= ioread32be(®s->imask);
689
690 iowrite32be(event, ®s->ievent);
691
692 if (event & DTSEC_IMASK_BREN)
693 dtsec->exception_cb(dtsec->dev_id, FM_MAC_EX_1G_BAB_RX);
694 if (event & DTSEC_IMASK_RXCEN)
695 dtsec->exception_cb(dtsec->dev_id, FM_MAC_EX_1G_RX_CTL);
696 if (event & DTSEC_IMASK_GTSCEN)
697 dtsec->exception_cb(dtsec->dev_id,
698 FM_MAC_EX_1G_GRATEFUL_TX_STP_COMPLET);
699 if (event & DTSEC_IMASK_BTEN)
700 dtsec->exception_cb(dtsec->dev_id, FM_MAC_EX_1G_BAB_TX);
701 if (event & DTSEC_IMASK_TXCEN)
702 dtsec->exception_cb(dtsec->dev_id, FM_MAC_EX_1G_TX_CTL);
703 if (event & DTSEC_IMASK_TXEEN)
704 dtsec->exception_cb(dtsec->dev_id, FM_MAC_EX_1G_TX_ERR);
705 if (event & DTSEC_IMASK_LCEN)
706 dtsec->exception_cb(dtsec->dev_id, FM_MAC_EX_1G_LATE_COL);
707 if (event & DTSEC_IMASK_CRLEN)
708 dtsec->exception_cb(dtsec->dev_id, FM_MAC_EX_1G_COL_RET_LMT);
709 if (event & DTSEC_IMASK_XFUNEN) {
710 /* FM_TX_LOCKUP_ERRATA_DTSEC6 Errata workaround */
711 if (dtsec->fm_rev_info.major == 2) {
712 u32 tpkt1, tmp_reg1, tpkt2, tmp_reg2, i;
713 /* a. Write 0x00E0_0C00 to DTSEC_ID
714 * This is a read only register
715 * b. Read and save the value of TPKT
716 */
717 tpkt1 = ioread32be(®s->tpkt);
718
719 /* c. Read the register at dTSEC address offset 0x32C */
720 tmp_reg1 = ioread32be(®s->reserved02c0[27]);
721
722 /* d. Compare bits [9:15] to bits [25:31] of the
723 * register at address offset 0x32C.
724 */
725 if ((tmp_reg1 & 0x007F0000) !=
726 (tmp_reg1 & 0x0000007F)) {
727 /* If they are not equal, save the value of
728 * this register and wait for at least
729 * MAXFRM*16 ns
730 */
731 usleep_range((u32)(min
732 (dtsec_get_max_frame_length(dtsec) *
733 16 / 1000, 1)), (u32)
734 (min(dtsec_get_max_frame_length
735 (dtsec) * 16 / 1000, 1) + 1));
736 }
737
738 /* e. Read and save TPKT again and read the register
739 * at dTSEC address offset 0x32C again
740 */
741 tpkt2 = ioread32be(®s->tpkt);
742 tmp_reg2 = ioread32be(®s->reserved02c0[27]);
743
744 /* f. Compare the value of TPKT saved in step b to
745 * value read in step e. Also compare bits [9:15] of
746 * the register at offset 0x32C saved in step d to the
747 * value of bits [9:15] saved in step e. If the two
748 * registers values are unchanged, then the transmit
749 * portion of the dTSEC controller is locked up and
750 * the user should proceed to the recover sequence.
751 */
752 if ((tpkt1 == tpkt2) && ((tmp_reg1 & 0x007F0000) ==
753 (tmp_reg2 & 0x007F0000))) {
754 /* recover sequence */
755
756 /* a.Write a 1 to RCTRL[GRS] */
757
758 iowrite32be(ioread32be(®s->rctrl) |
759 RCTRL_GRS, ®s->rctrl);
760
761 /* b.Wait until IEVENT[GRSC]=1, or at least
762 * 100 us has elapsed.
763 */
764 for (i = 0; i < 100; i++) {
765 if (ioread32be(®s->ievent) &
766 DTSEC_IMASK_GRSCEN)
767 break;
768 udelay(1);
769 }
770 if (ioread32be(®s->ievent) &
771 DTSEC_IMASK_GRSCEN)
772 iowrite32be(DTSEC_IMASK_GRSCEN,
773 ®s->ievent);
774 else
775 pr_debug("Rx lockup due to Tx lockup\n");
776
777 /* c.Write a 1 to bit n of FM_RSTC
778 * (offset 0x0CC of FPM)
779 */
780 fman_reset_mac(dtsec->fm, dtsec->mac_id);
781
782 /* d.Wait 4 Tx clocks (32 ns) */
783 udelay(1);
784
785 /* e.Write a 0 to bit n of FM_RSTC. */
786 /* cleared by FMAN
787 */
788 }
789 }
790
791 dtsec->exception_cb(dtsec->dev_id, FM_MAC_EX_1G_TX_FIFO_UNDRN);
792 }
793 if (event & DTSEC_IMASK_MAGEN)
794 dtsec->exception_cb(dtsec->dev_id, FM_MAC_EX_1G_MAG_PCKT);
795 if (event & DTSEC_IMASK_GRSCEN)
796 dtsec->exception_cb(dtsec->dev_id,
797 FM_MAC_EX_1G_GRATEFUL_RX_STP_COMPLET);
798 if (event & DTSEC_IMASK_TDPEEN)
799 dtsec->exception_cb(dtsec->dev_id, FM_MAC_EX_1G_DATA_ERR);
800 if (event & DTSEC_IMASK_RDPEEN)
801 dtsec->exception_cb(dtsec->dev_id, FM_MAC_1G_RX_DATA_ERR);
802
803 /* masked interrupts */
804 WARN_ON(event & DTSEC_IMASK_ABRTEN);
805 WARN_ON(event & DTSEC_IMASK_IFERREN);
806 }
807
dtsec_1588_isr(void * handle)808 static void dtsec_1588_isr(void *handle)
809 {
810 struct fman_mac *dtsec = (struct fman_mac *)handle;
811 struct dtsec_regs __iomem *regs = dtsec->regs;
812 u32 event;
813
814 if (dtsec->ptp_tsu_enabled) {
815 event = ioread32be(®s->tmr_pevent);
816 event &= ioread32be(®s->tmr_pemask);
817
818 if (event) {
819 iowrite32be(event, ®s->tmr_pevent);
820 WARN_ON(event & TMR_PEVENT_TSRE);
821 dtsec->exception_cb(dtsec->dev_id,
822 FM_MAC_EX_1G_1588_TS_RX_ERR);
823 }
824 }
825 }
826
free_init_resources(struct fman_mac * dtsec)827 static void free_init_resources(struct fman_mac *dtsec)
828 {
829 fman_unregister_intr(dtsec->fm, FMAN_MOD_MAC, dtsec->mac_id,
830 FMAN_INTR_TYPE_ERR);
831 fman_unregister_intr(dtsec->fm, FMAN_MOD_MAC, dtsec->mac_id,
832 FMAN_INTR_TYPE_NORMAL);
833
834 /* release the driver's group hash table */
835 free_hash_table(dtsec->multicast_addr_hash);
836 dtsec->multicast_addr_hash = NULL;
837
838 /* release the driver's individual hash table */
839 free_hash_table(dtsec->unicast_addr_hash);
840 dtsec->unicast_addr_hash = NULL;
841 }
842
dtsec_cfg_max_frame_len(struct fman_mac * dtsec,u16 new_val)843 int dtsec_cfg_max_frame_len(struct fman_mac *dtsec, u16 new_val)
844 {
845 if (is_init_done(dtsec->dtsec_drv_param))
846 return -EINVAL;
847
848 dtsec->dtsec_drv_param->maximum_frame = new_val;
849
850 return 0;
851 }
852
dtsec_cfg_pad_and_crc(struct fman_mac * dtsec,bool new_val)853 int dtsec_cfg_pad_and_crc(struct fman_mac *dtsec, bool new_val)
854 {
855 if (is_init_done(dtsec->dtsec_drv_param))
856 return -EINVAL;
857
858 dtsec->dtsec_drv_param->tx_pad_crc = new_val;
859
860 return 0;
861 }
862
graceful_start(struct fman_mac * dtsec,enum comm_mode mode)863 static void graceful_start(struct fman_mac *dtsec, enum comm_mode mode)
864 {
865 struct dtsec_regs __iomem *regs = dtsec->regs;
866
867 if (mode & COMM_MODE_TX)
868 iowrite32be(ioread32be(®s->tctrl) &
869 ~TCTRL_GTS, ®s->tctrl);
870 if (mode & COMM_MODE_RX)
871 iowrite32be(ioread32be(®s->rctrl) &
872 ~RCTRL_GRS, ®s->rctrl);
873 }
874
graceful_stop(struct fman_mac * dtsec,enum comm_mode mode)875 static void graceful_stop(struct fman_mac *dtsec, enum comm_mode mode)
876 {
877 struct dtsec_regs __iomem *regs = dtsec->regs;
878 u32 tmp;
879
880 /* Graceful stop - Assert the graceful Rx stop bit */
881 if (mode & COMM_MODE_RX) {
882 tmp = ioread32be(®s->rctrl) | RCTRL_GRS;
883 iowrite32be(tmp, ®s->rctrl);
884
885 if (dtsec->fm_rev_info.major == 2) {
886 /* Workaround for dTSEC Errata A002 */
887 usleep_range(100, 200);
888 } else {
889 /* Workaround for dTSEC Errata A004839 */
890 usleep_range(10, 50);
891 }
892 }
893
894 /* Graceful stop - Assert the graceful Tx stop bit */
895 if (mode & COMM_MODE_TX) {
896 if (dtsec->fm_rev_info.major == 2) {
897 /* dTSEC Errata A004: Do not use TCTRL[GTS]=1 */
898 pr_debug("GTS not supported due to DTSEC_A004 Errata.\n");
899 } else {
900 tmp = ioread32be(®s->tctrl) | TCTRL_GTS;
901 iowrite32be(tmp, ®s->tctrl);
902
903 /* Workaround for dTSEC Errata A0012, A0014 */
904 usleep_range(10, 50);
905 }
906 }
907 }
908
dtsec_enable(struct fman_mac * dtsec,enum comm_mode mode)909 int dtsec_enable(struct fman_mac *dtsec, enum comm_mode mode)
910 {
911 struct dtsec_regs __iomem *regs = dtsec->regs;
912 u32 tmp;
913
914 if (!is_init_done(dtsec->dtsec_drv_param))
915 return -EINVAL;
916
917 /* Enable */
918 tmp = ioread32be(®s->maccfg1);
919 if (mode & COMM_MODE_RX)
920 tmp |= MACCFG1_RX_EN;
921 if (mode & COMM_MODE_TX)
922 tmp |= MACCFG1_TX_EN;
923
924 iowrite32be(tmp, ®s->maccfg1);
925
926 /* Graceful start - clear the graceful Rx/Tx stop bit */
927 graceful_start(dtsec, mode);
928
929 return 0;
930 }
931
dtsec_disable(struct fman_mac * dtsec,enum comm_mode mode)932 int dtsec_disable(struct fman_mac *dtsec, enum comm_mode mode)
933 {
934 struct dtsec_regs __iomem *regs = dtsec->regs;
935 u32 tmp;
936
937 if (!is_init_done(dtsec->dtsec_drv_param))
938 return -EINVAL;
939
940 /* Graceful stop - Assert the graceful Rx/Tx stop bit */
941 graceful_stop(dtsec, mode);
942
943 tmp = ioread32be(®s->maccfg1);
944 if (mode & COMM_MODE_RX)
945 tmp &= ~MACCFG1_RX_EN;
946 if (mode & COMM_MODE_TX)
947 tmp &= ~MACCFG1_TX_EN;
948
949 iowrite32be(tmp, ®s->maccfg1);
950
951 return 0;
952 }
953
dtsec_set_tx_pause_frames(struct fman_mac * dtsec,u8 __maybe_unused priority,u16 pause_time,u16 __maybe_unused thresh_time)954 int dtsec_set_tx_pause_frames(struct fman_mac *dtsec,
955 u8 __maybe_unused priority,
956 u16 pause_time, u16 __maybe_unused thresh_time)
957 {
958 struct dtsec_regs __iomem *regs = dtsec->regs;
959 enum comm_mode mode = COMM_MODE_NONE;
960 u32 ptv = 0;
961
962 if (!is_init_done(dtsec->dtsec_drv_param))
963 return -EINVAL;
964
965 if ((ioread32be(®s->rctrl) & RCTRL_GRS) == 0)
966 mode |= COMM_MODE_RX;
967 if ((ioread32be(®s->tctrl) & TCTRL_GTS) == 0)
968 mode |= COMM_MODE_TX;
969
970 graceful_stop(dtsec, mode);
971
972 if (pause_time) {
973 /* FM_BAD_TX_TS_IN_B_2_B_ERRATA_DTSEC_A003 Errata workaround */
974 if (dtsec->fm_rev_info.major == 2 && pause_time <= 320) {
975 pr_warn("pause-time: %d illegal.Should be > 320\n",
976 pause_time);
977 return -EINVAL;
978 }
979
980 ptv = ioread32be(®s->ptv);
981 ptv &= PTV_PTE_MASK;
982 ptv |= pause_time & PTV_PT_MASK;
983 iowrite32be(ptv, ®s->ptv);
984
985 /* trigger the transmission of a flow-control pause frame */
986 iowrite32be(ioread32be(®s->maccfg1) | MACCFG1_TX_FLOW,
987 ®s->maccfg1);
988 } else
989 iowrite32be(ioread32be(®s->maccfg1) & ~MACCFG1_TX_FLOW,
990 ®s->maccfg1);
991
992 graceful_start(dtsec, mode);
993
994 return 0;
995 }
996
dtsec_accept_rx_pause_frames(struct fman_mac * dtsec,bool en)997 int dtsec_accept_rx_pause_frames(struct fman_mac *dtsec, bool en)
998 {
999 struct dtsec_regs __iomem *regs = dtsec->regs;
1000 enum comm_mode mode = COMM_MODE_NONE;
1001 u32 tmp;
1002
1003 if (!is_init_done(dtsec->dtsec_drv_param))
1004 return -EINVAL;
1005
1006 if ((ioread32be(®s->rctrl) & RCTRL_GRS) == 0)
1007 mode |= COMM_MODE_RX;
1008 if ((ioread32be(®s->tctrl) & TCTRL_GTS) == 0)
1009 mode |= COMM_MODE_TX;
1010
1011 graceful_stop(dtsec, mode);
1012
1013 tmp = ioread32be(®s->maccfg1);
1014 if (en)
1015 tmp |= MACCFG1_RX_FLOW;
1016 else
1017 tmp &= ~MACCFG1_RX_FLOW;
1018 iowrite32be(tmp, ®s->maccfg1);
1019
1020 graceful_start(dtsec, mode);
1021
1022 return 0;
1023 }
1024
dtsec_modify_mac_address(struct fman_mac * dtsec,enet_addr_t * enet_addr)1025 int dtsec_modify_mac_address(struct fman_mac *dtsec, enet_addr_t *enet_addr)
1026 {
1027 struct dtsec_regs __iomem *regs = dtsec->regs;
1028 enum comm_mode mode = COMM_MODE_NONE;
1029
1030 if (!is_init_done(dtsec->dtsec_drv_param))
1031 return -EINVAL;
1032
1033 if ((ioread32be(®s->rctrl) & RCTRL_GRS) == 0)
1034 mode |= COMM_MODE_RX;
1035 if ((ioread32be(®s->tctrl) & TCTRL_GTS) == 0)
1036 mode |= COMM_MODE_TX;
1037
1038 graceful_stop(dtsec, mode);
1039
1040 /* Initialize MAC Station Address registers (1 & 2)
1041 * Station address have to be swapped (big endian to little endian
1042 */
1043 dtsec->addr = ENET_ADDR_TO_UINT64(*enet_addr);
1044 set_mac_address(dtsec->regs, (u8 *)(*enet_addr));
1045
1046 graceful_start(dtsec, mode);
1047
1048 return 0;
1049 }
1050
dtsec_add_hash_mac_address(struct fman_mac * dtsec,enet_addr_t * eth_addr)1051 int dtsec_add_hash_mac_address(struct fman_mac *dtsec, enet_addr_t *eth_addr)
1052 {
1053 struct dtsec_regs __iomem *regs = dtsec->regs;
1054 struct eth_hash_entry *hash_entry;
1055 u64 addr;
1056 s32 bucket;
1057 u32 crc = 0xFFFFFFFF;
1058 bool mcast, ghtx;
1059
1060 if (!is_init_done(dtsec->dtsec_drv_param))
1061 return -EINVAL;
1062
1063 addr = ENET_ADDR_TO_UINT64(*eth_addr);
1064
1065 ghtx = (bool)((ioread32be(®s->rctrl) & RCTRL_GHTX) ? true : false);
1066 mcast = (bool)((addr & MAC_GROUP_ADDRESS) ? true : false);
1067
1068 /* Cannot handle unicast mac addr when GHTX is on */
1069 if (ghtx && !mcast) {
1070 pr_err("Could not compute hash bucket\n");
1071 return -EINVAL;
1072 }
1073 crc = crc32_le(crc, (u8 *)eth_addr, ETH_ALEN);
1074 crc = bitrev32(crc);
1075
1076 /* considering the 9 highest order bits in crc H[8:0]:
1077 *if ghtx = 0 H[8:6] (highest order 3 bits) identify the hash register
1078 *and H[5:1] (next 5 bits) identify the hash bit
1079 *if ghts = 1 H[8:5] (highest order 4 bits) identify the hash register
1080 *and H[4:0] (next 5 bits) identify the hash bit.
1081 *
1082 *In bucket index output the low 5 bits identify the hash register
1083 *bit, while the higher 4 bits identify the hash register
1084 */
1085
1086 if (ghtx) {
1087 bucket = (s32)((crc >> 23) & 0x1ff);
1088 } else {
1089 bucket = (s32)((crc >> 24) & 0xff);
1090 /* if !ghtx and mcast the bit must be set in gaddr instead of
1091 *igaddr.
1092 */
1093 if (mcast)
1094 bucket += 0x100;
1095 }
1096
1097 set_bucket(dtsec->regs, bucket, true);
1098
1099 /* Create element to be added to the driver hash table */
1100 hash_entry = kmalloc(sizeof(*hash_entry), GFP_ATOMIC);
1101 if (!hash_entry)
1102 return -ENOMEM;
1103 hash_entry->addr = addr;
1104 INIT_LIST_HEAD(&hash_entry->node);
1105
1106 if (addr & MAC_GROUP_ADDRESS)
1107 /* Group Address */
1108 list_add_tail(&hash_entry->node,
1109 &dtsec->multicast_addr_hash->lsts[bucket]);
1110 else
1111 list_add_tail(&hash_entry->node,
1112 &dtsec->unicast_addr_hash->lsts[bucket]);
1113
1114 return 0;
1115 }
1116
dtsec_set_allmulti(struct fman_mac * dtsec,bool enable)1117 int dtsec_set_allmulti(struct fman_mac *dtsec, bool enable)
1118 {
1119 u32 tmp;
1120 struct dtsec_regs __iomem *regs = dtsec->regs;
1121
1122 if (!is_init_done(dtsec->dtsec_drv_param))
1123 return -EINVAL;
1124
1125 tmp = ioread32be(®s->rctrl);
1126 if (enable)
1127 tmp |= RCTRL_MPROM;
1128 else
1129 tmp &= ~RCTRL_MPROM;
1130
1131 iowrite32be(tmp, ®s->rctrl);
1132
1133 return 0;
1134 }
1135
dtsec_set_tstamp(struct fman_mac * dtsec,bool enable)1136 int dtsec_set_tstamp(struct fman_mac *dtsec, bool enable)
1137 {
1138 struct dtsec_regs __iomem *regs = dtsec->regs;
1139 u32 rctrl, tctrl;
1140
1141 if (!is_init_done(dtsec->dtsec_drv_param))
1142 return -EINVAL;
1143
1144 rctrl = ioread32be(®s->rctrl);
1145 tctrl = ioread32be(®s->tctrl);
1146
1147 if (enable) {
1148 rctrl |= RCTRL_RTSE;
1149 tctrl |= TCTRL_TTSE;
1150 } else {
1151 rctrl &= ~RCTRL_RTSE;
1152 tctrl &= ~TCTRL_TTSE;
1153 }
1154
1155 iowrite32be(rctrl, ®s->rctrl);
1156 iowrite32be(tctrl, ®s->tctrl);
1157
1158 return 0;
1159 }
1160
dtsec_del_hash_mac_address(struct fman_mac * dtsec,enet_addr_t * eth_addr)1161 int dtsec_del_hash_mac_address(struct fman_mac *dtsec, enet_addr_t *eth_addr)
1162 {
1163 struct dtsec_regs __iomem *regs = dtsec->regs;
1164 struct list_head *pos;
1165 struct eth_hash_entry *hash_entry = NULL;
1166 u64 addr;
1167 s32 bucket;
1168 u32 crc = 0xFFFFFFFF;
1169 bool mcast, ghtx;
1170
1171 if (!is_init_done(dtsec->dtsec_drv_param))
1172 return -EINVAL;
1173
1174 addr = ENET_ADDR_TO_UINT64(*eth_addr);
1175
1176 ghtx = (bool)((ioread32be(®s->rctrl) & RCTRL_GHTX) ? true : false);
1177 mcast = (bool)((addr & MAC_GROUP_ADDRESS) ? true : false);
1178
1179 /* Cannot handle unicast mac addr when GHTX is on */
1180 if (ghtx && !mcast) {
1181 pr_err("Could not compute hash bucket\n");
1182 return -EINVAL;
1183 }
1184 crc = crc32_le(crc, (u8 *)eth_addr, ETH_ALEN);
1185 crc = bitrev32(crc);
1186
1187 if (ghtx) {
1188 bucket = (s32)((crc >> 23) & 0x1ff);
1189 } else {
1190 bucket = (s32)((crc >> 24) & 0xff);
1191 /* if !ghtx and mcast the bit must be set
1192 * in gaddr instead of igaddr.
1193 */
1194 if (mcast)
1195 bucket += 0x100;
1196 }
1197
1198 if (addr & MAC_GROUP_ADDRESS) {
1199 /* Group Address */
1200 list_for_each(pos,
1201 &dtsec->multicast_addr_hash->lsts[bucket]) {
1202 hash_entry = ETH_HASH_ENTRY_OBJ(pos);
1203 if (hash_entry && hash_entry->addr == addr) {
1204 list_del_init(&hash_entry->node);
1205 kfree(hash_entry);
1206 break;
1207 }
1208 }
1209 if (list_empty(&dtsec->multicast_addr_hash->lsts[bucket]))
1210 set_bucket(dtsec->regs, bucket, false);
1211 } else {
1212 /* Individual Address */
1213 list_for_each(pos,
1214 &dtsec->unicast_addr_hash->lsts[bucket]) {
1215 hash_entry = ETH_HASH_ENTRY_OBJ(pos);
1216 if (hash_entry && hash_entry->addr == addr) {
1217 list_del_init(&hash_entry->node);
1218 kfree(hash_entry);
1219 break;
1220 }
1221 }
1222 if (list_empty(&dtsec->unicast_addr_hash->lsts[bucket]))
1223 set_bucket(dtsec->regs, bucket, false);
1224 }
1225
1226 /* address does not exist */
1227 WARN_ON(!hash_entry);
1228
1229 return 0;
1230 }
1231
dtsec_set_promiscuous(struct fman_mac * dtsec,bool new_val)1232 int dtsec_set_promiscuous(struct fman_mac *dtsec, bool new_val)
1233 {
1234 struct dtsec_regs __iomem *regs = dtsec->regs;
1235 u32 tmp;
1236
1237 if (!is_init_done(dtsec->dtsec_drv_param))
1238 return -EINVAL;
1239
1240 /* Set unicast promiscuous */
1241 tmp = ioread32be(®s->rctrl);
1242 if (new_val)
1243 tmp |= RCTRL_UPROM;
1244 else
1245 tmp &= ~RCTRL_UPROM;
1246
1247 iowrite32be(tmp, ®s->rctrl);
1248
1249 /* Set multicast promiscuous */
1250 tmp = ioread32be(®s->rctrl);
1251 if (new_val)
1252 tmp |= RCTRL_MPROM;
1253 else
1254 tmp &= ~RCTRL_MPROM;
1255
1256 iowrite32be(tmp, ®s->rctrl);
1257
1258 return 0;
1259 }
1260
dtsec_adjust_link(struct fman_mac * dtsec,u16 speed)1261 int dtsec_adjust_link(struct fman_mac *dtsec, u16 speed)
1262 {
1263 struct dtsec_regs __iomem *regs = dtsec->regs;
1264 enum comm_mode mode = COMM_MODE_NONE;
1265 u32 tmp;
1266
1267 if (!is_init_done(dtsec->dtsec_drv_param))
1268 return -EINVAL;
1269
1270 if ((ioread32be(®s->rctrl) & RCTRL_GRS) == 0)
1271 mode |= COMM_MODE_RX;
1272 if ((ioread32be(®s->tctrl) & TCTRL_GTS) == 0)
1273 mode |= COMM_MODE_TX;
1274
1275 graceful_stop(dtsec, mode);
1276
1277 tmp = ioread32be(®s->maccfg2);
1278
1279 /* Full Duplex */
1280 tmp |= MACCFG2_FULL_DUPLEX;
1281
1282 tmp &= ~(MACCFG2_NIBBLE_MODE | MACCFG2_BYTE_MODE);
1283 if (speed < SPEED_1000)
1284 tmp |= MACCFG2_NIBBLE_MODE;
1285 else if (speed == SPEED_1000)
1286 tmp |= MACCFG2_BYTE_MODE;
1287 iowrite32be(tmp, ®s->maccfg2);
1288
1289 tmp = ioread32be(®s->ecntrl);
1290 if (speed == SPEED_100)
1291 tmp |= DTSEC_ECNTRL_R100M;
1292 else
1293 tmp &= ~DTSEC_ECNTRL_R100M;
1294 iowrite32be(tmp, ®s->ecntrl);
1295
1296 graceful_start(dtsec, mode);
1297
1298 return 0;
1299 }
1300
dtsec_restart_autoneg(struct fman_mac * dtsec)1301 int dtsec_restart_autoneg(struct fman_mac *dtsec)
1302 {
1303 u16 tmp_reg16;
1304
1305 if (!is_init_done(dtsec->dtsec_drv_param))
1306 return -EINVAL;
1307
1308 tmp_reg16 = phy_read(dtsec->tbiphy, MII_BMCR);
1309
1310 tmp_reg16 &= ~(BMCR_SPEED100 | BMCR_SPEED1000);
1311 tmp_reg16 |= (BMCR_ANENABLE | BMCR_ANRESTART |
1312 BMCR_FULLDPLX | BMCR_SPEED1000);
1313
1314 phy_write(dtsec->tbiphy, MII_BMCR, tmp_reg16);
1315
1316 return 0;
1317 }
1318
dtsec_get_version(struct fman_mac * dtsec,u32 * mac_version)1319 int dtsec_get_version(struct fman_mac *dtsec, u32 *mac_version)
1320 {
1321 struct dtsec_regs __iomem *regs = dtsec->regs;
1322
1323 if (!is_init_done(dtsec->dtsec_drv_param))
1324 return -EINVAL;
1325
1326 *mac_version = ioread32be(®s->tsec_id);
1327
1328 return 0;
1329 }
1330
dtsec_set_exception(struct fman_mac * dtsec,enum fman_mac_exceptions exception,bool enable)1331 int dtsec_set_exception(struct fman_mac *dtsec,
1332 enum fman_mac_exceptions exception, bool enable)
1333 {
1334 struct dtsec_regs __iomem *regs = dtsec->regs;
1335 u32 bit_mask = 0;
1336
1337 if (!is_init_done(dtsec->dtsec_drv_param))
1338 return -EINVAL;
1339
1340 if (exception != FM_MAC_EX_1G_1588_TS_RX_ERR) {
1341 bit_mask = get_exception_flag(exception);
1342 if (bit_mask) {
1343 if (enable)
1344 dtsec->exceptions |= bit_mask;
1345 else
1346 dtsec->exceptions &= ~bit_mask;
1347 } else {
1348 pr_err("Undefined exception\n");
1349 return -EINVAL;
1350 }
1351 if (enable)
1352 iowrite32be(ioread32be(®s->imask) | bit_mask,
1353 ®s->imask);
1354 else
1355 iowrite32be(ioread32be(®s->imask) & ~bit_mask,
1356 ®s->imask);
1357 } else {
1358 if (!dtsec->ptp_tsu_enabled) {
1359 pr_err("Exception valid for 1588 only\n");
1360 return -EINVAL;
1361 }
1362 switch (exception) {
1363 case FM_MAC_EX_1G_1588_TS_RX_ERR:
1364 if (enable) {
1365 dtsec->en_tsu_err_exception = true;
1366 iowrite32be(ioread32be(®s->tmr_pemask) |
1367 TMR_PEMASK_TSREEN,
1368 ®s->tmr_pemask);
1369 } else {
1370 dtsec->en_tsu_err_exception = false;
1371 iowrite32be(ioread32be(®s->tmr_pemask) &
1372 ~TMR_PEMASK_TSREEN,
1373 ®s->tmr_pemask);
1374 }
1375 break;
1376 default:
1377 pr_err("Undefined exception\n");
1378 return -EINVAL;
1379 }
1380 }
1381
1382 return 0;
1383 }
1384
dtsec_init(struct fman_mac * dtsec)1385 int dtsec_init(struct fman_mac *dtsec)
1386 {
1387 struct dtsec_regs __iomem *regs = dtsec->regs;
1388 struct dtsec_cfg *dtsec_drv_param;
1389 u16 max_frm_ln;
1390 int err;
1391
1392 if (is_init_done(dtsec->dtsec_drv_param))
1393 return -EINVAL;
1394
1395 if (DEFAULT_RESET_ON_INIT &&
1396 (fman_reset_mac(dtsec->fm, dtsec->mac_id) != 0)) {
1397 pr_err("Can't reset MAC!\n");
1398 return -EINVAL;
1399 }
1400
1401 err = check_init_parameters(dtsec);
1402 if (err)
1403 return err;
1404
1405 dtsec_drv_param = dtsec->dtsec_drv_param;
1406
1407 err = init(dtsec->regs, dtsec_drv_param, dtsec->phy_if,
1408 dtsec->max_speed, dtsec->addr, dtsec->exceptions,
1409 dtsec->tbiphy->mdio.addr);
1410 if (err) {
1411 free_init_resources(dtsec);
1412 pr_err("DTSEC version doesn't support this i/f mode\n");
1413 return err;
1414 }
1415
1416 if (dtsec->phy_if == PHY_INTERFACE_MODE_SGMII) {
1417 u16 tmp_reg16;
1418
1419 /* Configure the TBI PHY Control Register */
1420 tmp_reg16 = TBICON_CLK_SELECT | TBICON_SOFT_RESET;
1421 phy_write(dtsec->tbiphy, MII_TBICON, tmp_reg16);
1422
1423 tmp_reg16 = TBICON_CLK_SELECT;
1424 phy_write(dtsec->tbiphy, MII_TBICON, tmp_reg16);
1425
1426 tmp_reg16 = (BMCR_RESET | BMCR_ANENABLE |
1427 BMCR_FULLDPLX | BMCR_SPEED1000);
1428 phy_write(dtsec->tbiphy, MII_BMCR, tmp_reg16);
1429
1430 if (dtsec->basex_if)
1431 tmp_reg16 = TBIANA_1000X;
1432 else
1433 tmp_reg16 = TBIANA_SGMII;
1434 phy_write(dtsec->tbiphy, MII_ADVERTISE, tmp_reg16);
1435
1436 tmp_reg16 = (BMCR_ANENABLE | BMCR_ANRESTART |
1437 BMCR_FULLDPLX | BMCR_SPEED1000);
1438
1439 phy_write(dtsec->tbiphy, MII_BMCR, tmp_reg16);
1440 }
1441
1442 /* Max Frame Length */
1443 max_frm_ln = (u16)ioread32be(®s->maxfrm);
1444 err = fman_set_mac_max_frame(dtsec->fm, dtsec->mac_id, max_frm_ln);
1445 if (err) {
1446 pr_err("Setting max frame length failed\n");
1447 free_init_resources(dtsec);
1448 return -EINVAL;
1449 }
1450
1451 dtsec->multicast_addr_hash =
1452 alloc_hash_table(EXTENDED_HASH_TABLE_SIZE);
1453 if (!dtsec->multicast_addr_hash) {
1454 free_init_resources(dtsec);
1455 pr_err("MC hash table is failed\n");
1456 return -ENOMEM;
1457 }
1458
1459 dtsec->unicast_addr_hash = alloc_hash_table(DTSEC_HASH_TABLE_SIZE);
1460 if (!dtsec->unicast_addr_hash) {
1461 free_init_resources(dtsec);
1462 pr_err("UC hash table is failed\n");
1463 return -ENOMEM;
1464 }
1465
1466 /* register err intr handler for dtsec to FPM (err) */
1467 fman_register_intr(dtsec->fm, FMAN_MOD_MAC, dtsec->mac_id,
1468 FMAN_INTR_TYPE_ERR, dtsec_isr, dtsec);
1469 /* register 1588 intr handler for TMR to FPM (normal) */
1470 fman_register_intr(dtsec->fm, FMAN_MOD_MAC, dtsec->mac_id,
1471 FMAN_INTR_TYPE_NORMAL, dtsec_1588_isr, dtsec);
1472
1473 kfree(dtsec_drv_param);
1474 dtsec->dtsec_drv_param = NULL;
1475
1476 return 0;
1477 }
1478
dtsec_free(struct fman_mac * dtsec)1479 int dtsec_free(struct fman_mac *dtsec)
1480 {
1481 free_init_resources(dtsec);
1482
1483 kfree(dtsec->dtsec_drv_param);
1484 dtsec->dtsec_drv_param = NULL;
1485 kfree(dtsec);
1486
1487 return 0;
1488 }
1489
dtsec_config(struct fman_mac_params * params)1490 struct fman_mac *dtsec_config(struct fman_mac_params *params)
1491 {
1492 struct fman_mac *dtsec;
1493 struct dtsec_cfg *dtsec_drv_param;
1494 void __iomem *base_addr;
1495
1496 base_addr = params->base_addr;
1497
1498 /* allocate memory for the UCC GETH data structure. */
1499 dtsec = kzalloc(sizeof(*dtsec), GFP_KERNEL);
1500 if (!dtsec)
1501 return NULL;
1502
1503 /* allocate memory for the d_tsec driver parameters data structure. */
1504 dtsec_drv_param = kzalloc(sizeof(*dtsec_drv_param), GFP_KERNEL);
1505 if (!dtsec_drv_param)
1506 goto err_dtsec;
1507
1508 /* Plant parameter structure pointer */
1509 dtsec->dtsec_drv_param = dtsec_drv_param;
1510
1511 set_dflts(dtsec_drv_param);
1512
1513 dtsec->regs = base_addr;
1514 dtsec->addr = ENET_ADDR_TO_UINT64(params->addr);
1515 dtsec->max_speed = params->max_speed;
1516 dtsec->phy_if = params->phy_if;
1517 dtsec->mac_id = params->mac_id;
1518 dtsec->exceptions = (DTSEC_IMASK_BREN |
1519 DTSEC_IMASK_RXCEN |
1520 DTSEC_IMASK_BTEN |
1521 DTSEC_IMASK_TXCEN |
1522 DTSEC_IMASK_TXEEN |
1523 DTSEC_IMASK_ABRTEN |
1524 DTSEC_IMASK_LCEN |
1525 DTSEC_IMASK_CRLEN |
1526 DTSEC_IMASK_XFUNEN |
1527 DTSEC_IMASK_IFERREN |
1528 DTSEC_IMASK_MAGEN |
1529 DTSEC_IMASK_TDPEEN |
1530 DTSEC_IMASK_RDPEEN);
1531 dtsec->exception_cb = params->exception_cb;
1532 dtsec->event_cb = params->event_cb;
1533 dtsec->dev_id = params->dev_id;
1534 dtsec->ptp_tsu_enabled = dtsec->dtsec_drv_param->ptp_tsu_en;
1535 dtsec->en_tsu_err_exception = dtsec->dtsec_drv_param->ptp_exception_en;
1536
1537 dtsec->fm = params->fm;
1538 dtsec->basex_if = params->basex_if;
1539
1540 if (!params->internal_phy_node) {
1541 pr_err("TBI PHY node is not available\n");
1542 goto err_dtsec_drv_param;
1543 }
1544
1545 dtsec->tbiphy = of_phy_find_device(params->internal_phy_node);
1546 if (!dtsec->tbiphy) {
1547 pr_err("of_phy_find_device (TBI PHY) failed\n");
1548 goto err_dtsec_drv_param;
1549 }
1550
1551 put_device(&dtsec->tbiphy->mdio.dev);
1552
1553 /* Save FMan revision */
1554 fman_get_revision(dtsec->fm, &dtsec->fm_rev_info);
1555
1556 return dtsec;
1557
1558 err_dtsec_drv_param:
1559 kfree(dtsec_drv_param);
1560 err_dtsec:
1561 kfree(dtsec);
1562 return NULL;
1563 }
1564