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Merge remote-tracking branches 'asoc/fix/alc5632', 'asoc/fix/cs42l52', 'asoc/fix...
[deliverable/linux.git] / drivers / net / ethernet / ti / cpsw.c
1 /*
2 * Texas Instruments Ethernet Switch Driver
3 *
4 * Copyright (C) 2012 Texas Instruments
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation version 2.
9 *
10 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
11 * kind, whether express or implied; without even the implied warranty
12 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 */
15
16 #include <linux/kernel.h>
17 #include <linux/io.h>
18 #include <linux/clk.h>
19 #include <linux/timer.h>
20 #include <linux/module.h>
21 #include <linux/platform_device.h>
22 #include <linux/irqreturn.h>
23 #include <linux/interrupt.h>
24 #include <linux/if_ether.h>
25 #include <linux/etherdevice.h>
26 #include <linux/netdevice.h>
27 #include <linux/net_tstamp.h>
28 #include <linux/phy.h>
29 #include <linux/workqueue.h>
30 #include <linux/delay.h>
31 #include <linux/pm_runtime.h>
32 #include <linux/of.h>
33 #include <linux/of_net.h>
34 #include <linux/of_device.h>
35 #include <linux/if_vlan.h>
36
37 #include <linux/pinctrl/consumer.h>
38
39 #include "cpsw.h"
40 #include "cpsw_ale.h"
41 #include "cpts.h"
42 #include "davinci_cpdma.h"
43
44 #define CPSW_DEBUG (NETIF_MSG_HW | NETIF_MSG_WOL | \
45 NETIF_MSG_DRV | NETIF_MSG_LINK | \
46 NETIF_MSG_IFUP | NETIF_MSG_INTR | \
47 NETIF_MSG_PROBE | NETIF_MSG_TIMER | \
48 NETIF_MSG_IFDOWN | NETIF_MSG_RX_ERR | \
49 NETIF_MSG_TX_ERR | NETIF_MSG_TX_DONE | \
50 NETIF_MSG_PKTDATA | NETIF_MSG_TX_QUEUED | \
51 NETIF_MSG_RX_STATUS)
52
53 #define cpsw_info(priv, type, format, ...) \
54 do { \
55 if (netif_msg_##type(priv) && net_ratelimit()) \
56 dev_info(priv->dev, format, ## __VA_ARGS__); \
57 } while (0)
58
59 #define cpsw_err(priv, type, format, ...) \
60 do { \
61 if (netif_msg_##type(priv) && net_ratelimit()) \
62 dev_err(priv->dev, format, ## __VA_ARGS__); \
63 } while (0)
64
65 #define cpsw_dbg(priv, type, format, ...) \
66 do { \
67 if (netif_msg_##type(priv) && net_ratelimit()) \
68 dev_dbg(priv->dev, format, ## __VA_ARGS__); \
69 } while (0)
70
71 #define cpsw_notice(priv, type, format, ...) \
72 do { \
73 if (netif_msg_##type(priv) && net_ratelimit()) \
74 dev_notice(priv->dev, format, ## __VA_ARGS__); \
75 } while (0)
76
77 #define ALE_ALL_PORTS 0x7
78
79 #define CPSW_MAJOR_VERSION(reg) (reg >> 8 & 0x7)
80 #define CPSW_MINOR_VERSION(reg) (reg & 0xff)
81 #define CPSW_RTL_VERSION(reg) ((reg >> 11) & 0x1f)
82
83 #define CPSW_VERSION_1 0x19010a
84 #define CPSW_VERSION_2 0x19010c
85 #define CPSW_VERSION_3 0x19010f
86 #define CPSW_VERSION_4 0x190112
87
88 #define HOST_PORT_NUM 0
89 #define SLIVER_SIZE 0x40
90
91 #define CPSW1_HOST_PORT_OFFSET 0x028
92 #define CPSW1_SLAVE_OFFSET 0x050
93 #define CPSW1_SLAVE_SIZE 0x040
94 #define CPSW1_CPDMA_OFFSET 0x100
95 #define CPSW1_STATERAM_OFFSET 0x200
96 #define CPSW1_HW_STATS 0x400
97 #define CPSW1_CPTS_OFFSET 0x500
98 #define CPSW1_ALE_OFFSET 0x600
99 #define CPSW1_SLIVER_OFFSET 0x700
100
101 #define CPSW2_HOST_PORT_OFFSET 0x108
102 #define CPSW2_SLAVE_OFFSET 0x200
103 #define CPSW2_SLAVE_SIZE 0x100
104 #define CPSW2_CPDMA_OFFSET 0x800
105 #define CPSW2_HW_STATS 0x900
106 #define CPSW2_STATERAM_OFFSET 0xa00
107 #define CPSW2_CPTS_OFFSET 0xc00
108 #define CPSW2_ALE_OFFSET 0xd00
109 #define CPSW2_SLIVER_OFFSET 0xd80
110 #define CPSW2_BD_OFFSET 0x2000
111
112 #define CPDMA_RXTHRESH 0x0c0
113 #define CPDMA_RXFREE 0x0e0
114 #define CPDMA_TXHDP 0x00
115 #define CPDMA_RXHDP 0x20
116 #define CPDMA_TXCP 0x40
117 #define CPDMA_RXCP 0x60
118
119 #define CPSW_POLL_WEIGHT 64
120 #define CPSW_MIN_PACKET_SIZE 60
121 #define CPSW_MAX_PACKET_SIZE (1500 + 14 + 4 + 4)
122
123 #define RX_PRIORITY_MAPPING 0x76543210
124 #define TX_PRIORITY_MAPPING 0x33221100
125 #define CPDMA_TX_PRIORITY_MAP 0x76543210
126
127 #define CPSW_VLAN_AWARE BIT(1)
128 #define CPSW_ALE_VLAN_AWARE 1
129
130 #define CPSW_FIFO_NORMAL_MODE (0 << 15)
131 #define CPSW_FIFO_DUAL_MAC_MODE (1 << 15)
132 #define CPSW_FIFO_RATE_LIMIT_MODE (2 << 15)
133
134 #define CPSW_INTPACEEN (0x3f << 16)
135 #define CPSW_INTPRESCALE_MASK (0x7FF << 0)
136 #define CPSW_CMINTMAX_CNT 63
137 #define CPSW_CMINTMIN_CNT 2
138 #define CPSW_CMINTMAX_INTVL (1000 / CPSW_CMINTMIN_CNT)
139 #define CPSW_CMINTMIN_INTVL ((1000 / CPSW_CMINTMAX_CNT) + 1)
140
141 #define cpsw_enable_irq(priv) \
142 do { \
143 u32 i; \
144 for (i = 0; i < priv->num_irqs; i++) \
145 enable_irq(priv->irqs_table[i]); \
146 } while (0);
147 #define cpsw_disable_irq(priv) \
148 do { \
149 u32 i; \
150 for (i = 0; i < priv->num_irqs; i++) \
151 disable_irq_nosync(priv->irqs_table[i]); \
152 } while (0);
153
154 #define cpsw_slave_index(priv) \
155 ((priv->data.dual_emac) ? priv->emac_port : \
156 priv->data.active_slave)
157
158 static int debug_level;
159 module_param(debug_level, int, 0);
160 MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)");
161
162 static int ale_ageout = 10;
163 module_param(ale_ageout, int, 0);
164 MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)");
165
166 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
167 module_param(rx_packet_max, int, 0);
168 MODULE_PARM_DESC(rx_packet_max, "maximum receive packet size (bytes)");
169
170 struct cpsw_wr_regs {
171 u32 id_ver;
172 u32 soft_reset;
173 u32 control;
174 u32 int_control;
175 u32 rx_thresh_en;
176 u32 rx_en;
177 u32 tx_en;
178 u32 misc_en;
179 u32 mem_allign1[8];
180 u32 rx_thresh_stat;
181 u32 rx_stat;
182 u32 tx_stat;
183 u32 misc_stat;
184 u32 mem_allign2[8];
185 u32 rx_imax;
186 u32 tx_imax;
187
188 };
189
190 struct cpsw_ss_regs {
191 u32 id_ver;
192 u32 control;
193 u32 soft_reset;
194 u32 stat_port_en;
195 u32 ptype;
196 u32 soft_idle;
197 u32 thru_rate;
198 u32 gap_thresh;
199 u32 tx_start_wds;
200 u32 flow_control;
201 u32 vlan_ltype;
202 u32 ts_ltype;
203 u32 dlr_ltype;
204 };
205
206 /* CPSW_PORT_V1 */
207 #define CPSW1_MAX_BLKS 0x00 /* Maximum FIFO Blocks */
208 #define CPSW1_BLK_CNT 0x04 /* FIFO Block Usage Count (Read Only) */
209 #define CPSW1_TX_IN_CTL 0x08 /* Transmit FIFO Control */
210 #define CPSW1_PORT_VLAN 0x0c /* VLAN Register */
211 #define CPSW1_TX_PRI_MAP 0x10 /* Tx Header Priority to Switch Pri Mapping */
212 #define CPSW1_TS_CTL 0x14 /* Time Sync Control */
213 #define CPSW1_TS_SEQ_LTYPE 0x18 /* Time Sync Sequence ID Offset and Msg Type */
214 #define CPSW1_TS_VLAN 0x1c /* Time Sync VLAN1 and VLAN2 */
215
216 /* CPSW_PORT_V2 */
217 #define CPSW2_CONTROL 0x00 /* Control Register */
218 #define CPSW2_MAX_BLKS 0x08 /* Maximum FIFO Blocks */
219 #define CPSW2_BLK_CNT 0x0c /* FIFO Block Usage Count (Read Only) */
220 #define CPSW2_TX_IN_CTL 0x10 /* Transmit FIFO Control */
221 #define CPSW2_PORT_VLAN 0x14 /* VLAN Register */
222 #define CPSW2_TX_PRI_MAP 0x18 /* Tx Header Priority to Switch Pri Mapping */
223 #define CPSW2_TS_SEQ_MTYPE 0x1c /* Time Sync Sequence ID Offset and Msg Type */
224
225 /* CPSW_PORT_V1 and V2 */
226 #define SA_LO 0x20 /* CPGMAC_SL Source Address Low */
227 #define SA_HI 0x24 /* CPGMAC_SL Source Address High */
228 #define SEND_PERCENT 0x28 /* Transmit Queue Send Percentages */
229
230 /* CPSW_PORT_V2 only */
231 #define RX_DSCP_PRI_MAP0 0x30 /* Rx DSCP Priority to Rx Packet Mapping */
232 #define RX_DSCP_PRI_MAP1 0x34 /* Rx DSCP Priority to Rx Packet Mapping */
233 #define RX_DSCP_PRI_MAP2 0x38 /* Rx DSCP Priority to Rx Packet Mapping */
234 #define RX_DSCP_PRI_MAP3 0x3c /* Rx DSCP Priority to Rx Packet Mapping */
235 #define RX_DSCP_PRI_MAP4 0x40 /* Rx DSCP Priority to Rx Packet Mapping */
236 #define RX_DSCP_PRI_MAP5 0x44 /* Rx DSCP Priority to Rx Packet Mapping */
237 #define RX_DSCP_PRI_MAP6 0x48 /* Rx DSCP Priority to Rx Packet Mapping */
238 #define RX_DSCP_PRI_MAP7 0x4c /* Rx DSCP Priority to Rx Packet Mapping */
239
240 /* Bit definitions for the CPSW2_CONTROL register */
241 #define PASS_PRI_TAGGED (1<<24) /* Pass Priority Tagged */
242 #define VLAN_LTYPE2_EN (1<<21) /* VLAN LTYPE 2 enable */
243 #define VLAN_LTYPE1_EN (1<<20) /* VLAN LTYPE 1 enable */
244 #define DSCP_PRI_EN (1<<16) /* DSCP Priority Enable */
245 #define TS_320 (1<<14) /* Time Sync Dest Port 320 enable */
246 #define TS_319 (1<<13) /* Time Sync Dest Port 319 enable */
247 #define TS_132 (1<<12) /* Time Sync Dest IP Addr 132 enable */
248 #define TS_131 (1<<11) /* Time Sync Dest IP Addr 131 enable */
249 #define TS_130 (1<<10) /* Time Sync Dest IP Addr 130 enable */
250 #define TS_129 (1<<9) /* Time Sync Dest IP Addr 129 enable */
251 #define TS_BIT8 (1<<8) /* ts_ttl_nonzero? */
252 #define TS_ANNEX_D_EN (1<<4) /* Time Sync Annex D enable */
253 #define TS_LTYPE2_EN (1<<3) /* Time Sync LTYPE 2 enable */
254 #define TS_LTYPE1_EN (1<<2) /* Time Sync LTYPE 1 enable */
255 #define TS_TX_EN (1<<1) /* Time Sync Transmit Enable */
256 #define TS_RX_EN (1<<0) /* Time Sync Receive Enable */
257
258 #define CTRL_TS_BITS \
259 (TS_320 | TS_319 | TS_132 | TS_131 | TS_130 | TS_129 | TS_BIT8 | \
260 TS_ANNEX_D_EN | TS_LTYPE1_EN)
261
262 #define CTRL_ALL_TS_MASK (CTRL_TS_BITS | TS_TX_EN | TS_RX_EN)
263 #define CTRL_TX_TS_BITS (CTRL_TS_BITS | TS_TX_EN)
264 #define CTRL_RX_TS_BITS (CTRL_TS_BITS | TS_RX_EN)
265
266 /* Bit definitions for the CPSW2_TS_SEQ_MTYPE register */
267 #define TS_SEQ_ID_OFFSET_SHIFT (16) /* Time Sync Sequence ID Offset */
268 #define TS_SEQ_ID_OFFSET_MASK (0x3f)
269 #define TS_MSG_TYPE_EN_SHIFT (0) /* Time Sync Message Type Enable */
270 #define TS_MSG_TYPE_EN_MASK (0xffff)
271
272 /* The PTP event messages - Sync, Delay_Req, Pdelay_Req, and Pdelay_Resp. */
273 #define EVENT_MSG_BITS ((1<<0) | (1<<1) | (1<<2) | (1<<3))
274
275 /* Bit definitions for the CPSW1_TS_CTL register */
276 #define CPSW_V1_TS_RX_EN BIT(0)
277 #define CPSW_V1_TS_TX_EN BIT(4)
278 #define CPSW_V1_MSG_TYPE_OFS 16
279
280 /* Bit definitions for the CPSW1_TS_SEQ_LTYPE register */
281 #define CPSW_V1_SEQ_ID_OFS_SHIFT 16
282
283 struct cpsw_host_regs {
284 u32 max_blks;
285 u32 blk_cnt;
286 u32 tx_in_ctl;
287 u32 port_vlan;
288 u32 tx_pri_map;
289 u32 cpdma_tx_pri_map;
290 u32 cpdma_rx_chan_map;
291 };
292
293 struct cpsw_sliver_regs {
294 u32 id_ver;
295 u32 mac_control;
296 u32 mac_status;
297 u32 soft_reset;
298 u32 rx_maxlen;
299 u32 __reserved_0;
300 u32 rx_pause;
301 u32 tx_pause;
302 u32 __reserved_1;
303 u32 rx_pri_map;
304 };
305
306 struct cpsw_hw_stats {
307 u32 rxgoodframes;
308 u32 rxbroadcastframes;
309 u32 rxmulticastframes;
310 u32 rxpauseframes;
311 u32 rxcrcerrors;
312 u32 rxaligncodeerrors;
313 u32 rxoversizedframes;
314 u32 rxjabberframes;
315 u32 rxundersizedframes;
316 u32 rxfragments;
317 u32 __pad_0[2];
318 u32 rxoctets;
319 u32 txgoodframes;
320 u32 txbroadcastframes;
321 u32 txmulticastframes;
322 u32 txpauseframes;
323 u32 txdeferredframes;
324 u32 txcollisionframes;
325 u32 txsinglecollframes;
326 u32 txmultcollframes;
327 u32 txexcessivecollisions;
328 u32 txlatecollisions;
329 u32 txunderrun;
330 u32 txcarriersenseerrors;
331 u32 txoctets;
332 u32 octetframes64;
333 u32 octetframes65t127;
334 u32 octetframes128t255;
335 u32 octetframes256t511;
336 u32 octetframes512t1023;
337 u32 octetframes1024tup;
338 u32 netoctets;
339 u32 rxsofoverruns;
340 u32 rxmofoverruns;
341 u32 rxdmaoverruns;
342 };
343
344 struct cpsw_slave {
345 void __iomem *regs;
346 struct cpsw_sliver_regs __iomem *sliver;
347 int slave_num;
348 u32 mac_control;
349 struct cpsw_slave_data *data;
350 struct phy_device *phy;
351 struct net_device *ndev;
352 u32 port_vlan;
353 u32 open_stat;
354 };
355
356 static inline u32 slave_read(struct cpsw_slave *slave, u32 offset)
357 {
358 return __raw_readl(slave->regs + offset);
359 }
360
361 static inline void slave_write(struct cpsw_slave *slave, u32 val, u32 offset)
362 {
363 __raw_writel(val, slave->regs + offset);
364 }
365
366 struct cpsw_priv {
367 spinlock_t lock;
368 struct platform_device *pdev;
369 struct net_device *ndev;
370 struct napi_struct napi;
371 struct device *dev;
372 struct cpsw_platform_data data;
373 struct cpsw_ss_regs __iomem *regs;
374 struct cpsw_wr_regs __iomem *wr_regs;
375 u8 __iomem *hw_stats;
376 struct cpsw_host_regs __iomem *host_port_regs;
377 u32 msg_enable;
378 u32 version;
379 u32 coal_intvl;
380 u32 bus_freq_mhz;
381 struct net_device_stats stats;
382 int rx_packet_max;
383 int host_port;
384 struct clk *clk;
385 u8 mac_addr[ETH_ALEN];
386 struct cpsw_slave *slaves;
387 struct cpdma_ctlr *dma;
388 struct cpdma_chan *txch, *rxch;
389 struct cpsw_ale *ale;
390 /* snapshot of IRQ numbers */
391 u32 irqs_table[4];
392 u32 num_irqs;
393 bool irq_enabled;
394 struct cpts *cpts;
395 u32 emac_port;
396 };
397
398 struct cpsw_stats {
399 char stat_string[ETH_GSTRING_LEN];
400 int type;
401 int sizeof_stat;
402 int stat_offset;
403 };
404
405 enum {
406 CPSW_STATS,
407 CPDMA_RX_STATS,
408 CPDMA_TX_STATS,
409 };
410
411 #define CPSW_STAT(m) CPSW_STATS, \
412 sizeof(((struct cpsw_hw_stats *)0)->m), \
413 offsetof(struct cpsw_hw_stats, m)
414 #define CPDMA_RX_STAT(m) CPDMA_RX_STATS, \
415 sizeof(((struct cpdma_chan_stats *)0)->m), \
416 offsetof(struct cpdma_chan_stats, m)
417 #define CPDMA_TX_STAT(m) CPDMA_TX_STATS, \
418 sizeof(((struct cpdma_chan_stats *)0)->m), \
419 offsetof(struct cpdma_chan_stats, m)
420
421 static const struct cpsw_stats cpsw_gstrings_stats[] = {
422 { "Good Rx Frames", CPSW_STAT(rxgoodframes) },
423 { "Broadcast Rx Frames", CPSW_STAT(rxbroadcastframes) },
424 { "Multicast Rx Frames", CPSW_STAT(rxmulticastframes) },
425 { "Pause Rx Frames", CPSW_STAT(rxpauseframes) },
426 { "Rx CRC Errors", CPSW_STAT(rxcrcerrors) },
427 { "Rx Align/Code Errors", CPSW_STAT(rxaligncodeerrors) },
428 { "Oversize Rx Frames", CPSW_STAT(rxoversizedframes) },
429 { "Rx Jabbers", CPSW_STAT(rxjabberframes) },
430 { "Undersize (Short) Rx Frames", CPSW_STAT(rxundersizedframes) },
431 { "Rx Fragments", CPSW_STAT(rxfragments) },
432 { "Rx Octets", CPSW_STAT(rxoctets) },
433 { "Good Tx Frames", CPSW_STAT(txgoodframes) },
434 { "Broadcast Tx Frames", CPSW_STAT(txbroadcastframes) },
435 { "Multicast Tx Frames", CPSW_STAT(txmulticastframes) },
436 { "Pause Tx Frames", CPSW_STAT(txpauseframes) },
437 { "Deferred Tx Frames", CPSW_STAT(txdeferredframes) },
438 { "Collisions", CPSW_STAT(txcollisionframes) },
439 { "Single Collision Tx Frames", CPSW_STAT(txsinglecollframes) },
440 { "Multiple Collision Tx Frames", CPSW_STAT(txmultcollframes) },
441 { "Excessive Collisions", CPSW_STAT(txexcessivecollisions) },
442 { "Late Collisions", CPSW_STAT(txlatecollisions) },
443 { "Tx Underrun", CPSW_STAT(txunderrun) },
444 { "Carrier Sense Errors", CPSW_STAT(txcarriersenseerrors) },
445 { "Tx Octets", CPSW_STAT(txoctets) },
446 { "Rx + Tx 64 Octet Frames", CPSW_STAT(octetframes64) },
447 { "Rx + Tx 65-127 Octet Frames", CPSW_STAT(octetframes65t127) },
448 { "Rx + Tx 128-255 Octet Frames", CPSW_STAT(octetframes128t255) },
449 { "Rx + Tx 256-511 Octet Frames", CPSW_STAT(octetframes256t511) },
450 { "Rx + Tx 512-1023 Octet Frames", CPSW_STAT(octetframes512t1023) },
451 { "Rx + Tx 1024-Up Octet Frames", CPSW_STAT(octetframes1024tup) },
452 { "Net Octets", CPSW_STAT(netoctets) },
453 { "Rx Start of Frame Overruns", CPSW_STAT(rxsofoverruns) },
454 { "Rx Middle of Frame Overruns", CPSW_STAT(rxmofoverruns) },
455 { "Rx DMA Overruns", CPSW_STAT(rxdmaoverruns) },
456 { "Rx DMA chan: head_enqueue", CPDMA_RX_STAT(head_enqueue) },
457 { "Rx DMA chan: tail_enqueue", CPDMA_RX_STAT(tail_enqueue) },
458 { "Rx DMA chan: pad_enqueue", CPDMA_RX_STAT(pad_enqueue) },
459 { "Rx DMA chan: misqueued", CPDMA_RX_STAT(misqueued) },
460 { "Rx DMA chan: desc_alloc_fail", CPDMA_RX_STAT(desc_alloc_fail) },
461 { "Rx DMA chan: pad_alloc_fail", CPDMA_RX_STAT(pad_alloc_fail) },
462 { "Rx DMA chan: runt_receive_buf", CPDMA_RX_STAT(runt_receive_buff) },
463 { "Rx DMA chan: runt_transmit_buf", CPDMA_RX_STAT(runt_transmit_buff) },
464 { "Rx DMA chan: empty_dequeue", CPDMA_RX_STAT(empty_dequeue) },
465 { "Rx DMA chan: busy_dequeue", CPDMA_RX_STAT(busy_dequeue) },
466 { "Rx DMA chan: good_dequeue", CPDMA_RX_STAT(good_dequeue) },
467 { "Rx DMA chan: requeue", CPDMA_RX_STAT(requeue) },
468 { "Rx DMA chan: teardown_dequeue", CPDMA_RX_STAT(teardown_dequeue) },
469 { "Tx DMA chan: head_enqueue", CPDMA_TX_STAT(head_enqueue) },
470 { "Tx DMA chan: tail_enqueue", CPDMA_TX_STAT(tail_enqueue) },
471 { "Tx DMA chan: pad_enqueue", CPDMA_TX_STAT(pad_enqueue) },
472 { "Tx DMA chan: misqueued", CPDMA_TX_STAT(misqueued) },
473 { "Tx DMA chan: desc_alloc_fail", CPDMA_TX_STAT(desc_alloc_fail) },
474 { "Tx DMA chan: pad_alloc_fail", CPDMA_TX_STAT(pad_alloc_fail) },
475 { "Tx DMA chan: runt_receive_buf", CPDMA_TX_STAT(runt_receive_buff) },
476 { "Tx DMA chan: runt_transmit_buf", CPDMA_TX_STAT(runt_transmit_buff) },
477 { "Tx DMA chan: empty_dequeue", CPDMA_TX_STAT(empty_dequeue) },
478 { "Tx DMA chan: busy_dequeue", CPDMA_TX_STAT(busy_dequeue) },
479 { "Tx DMA chan: good_dequeue", CPDMA_TX_STAT(good_dequeue) },
480 { "Tx DMA chan: requeue", CPDMA_TX_STAT(requeue) },
481 { "Tx DMA chan: teardown_dequeue", CPDMA_TX_STAT(teardown_dequeue) },
482 };
483
484 #define CPSW_STATS_LEN ARRAY_SIZE(cpsw_gstrings_stats)
485
486 #define napi_to_priv(napi) container_of(napi, struct cpsw_priv, napi)
487 #define for_each_slave(priv, func, arg...) \
488 do { \
489 struct cpsw_slave *slave; \
490 int n; \
491 if (priv->data.dual_emac) \
492 (func)((priv)->slaves + priv->emac_port, ##arg);\
493 else \
494 for (n = (priv)->data.slaves, \
495 slave = (priv)->slaves; \
496 n; n--) \
497 (func)(slave++, ##arg); \
498 } while (0)
499 #define cpsw_get_slave_ndev(priv, __slave_no__) \
500 (priv->slaves[__slave_no__].ndev)
501 #define cpsw_get_slave_priv(priv, __slave_no__) \
502 ((priv->slaves[__slave_no__].ndev) ? \
503 netdev_priv(priv->slaves[__slave_no__].ndev) : NULL) \
504
505 #define cpsw_dual_emac_src_port_detect(status, priv, ndev, skb) \
506 do { \
507 if (!priv->data.dual_emac) \
508 break; \
509 if (CPDMA_RX_SOURCE_PORT(status) == 1) { \
510 ndev = cpsw_get_slave_ndev(priv, 0); \
511 priv = netdev_priv(ndev); \
512 skb->dev = ndev; \
513 } else if (CPDMA_RX_SOURCE_PORT(status) == 2) { \
514 ndev = cpsw_get_slave_ndev(priv, 1); \
515 priv = netdev_priv(ndev); \
516 skb->dev = ndev; \
517 } \
518 } while (0)
519 #define cpsw_add_mcast(priv, addr) \
520 do { \
521 if (priv->data.dual_emac) { \
522 struct cpsw_slave *slave = priv->slaves + \
523 priv->emac_port; \
524 int slave_port = cpsw_get_slave_port(priv, \
525 slave->slave_num); \
526 cpsw_ale_add_mcast(priv->ale, addr, \
527 1 << slave_port | 1 << priv->host_port, \
528 ALE_VLAN, slave->port_vlan, 0); \
529 } else { \
530 cpsw_ale_add_mcast(priv->ale, addr, \
531 ALE_ALL_PORTS << priv->host_port, \
532 0, 0, 0); \
533 } \
534 } while (0)
535
536 static inline int cpsw_get_slave_port(struct cpsw_priv *priv, u32 slave_num)
537 {
538 if (priv->host_port == 0)
539 return slave_num + 1;
540 else
541 return slave_num;
542 }
543
544 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
545 {
546 struct cpsw_priv *priv = netdev_priv(ndev);
547 struct cpsw_ale *ale = priv->ale;
548 int i;
549
550 if (priv->data.dual_emac) {
551 bool flag = false;
552
553 /* Enabling promiscuous mode for one interface will be
554 * common for both the interface as the interface shares
555 * the same hardware resource.
556 */
557 for (i = 0; i < priv->data.slaves; i++)
558 if (priv->slaves[i].ndev->flags & IFF_PROMISC)
559 flag = true;
560
561 if (!enable && flag) {
562 enable = true;
563 dev_err(&ndev->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
564 }
565
566 if (enable) {
567 /* Enable Bypass */
568 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 1);
569
570 dev_dbg(&ndev->dev, "promiscuity enabled\n");
571 } else {
572 /* Disable Bypass */
573 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 0);
574 dev_dbg(&ndev->dev, "promiscuity disabled\n");
575 }
576 } else {
577 if (enable) {
578 unsigned long timeout = jiffies + HZ;
579
580 /* Disable Learn for all ports */
581 for (i = 0; i < priv->data.slaves; i++) {
582 cpsw_ale_control_set(ale, i,
583 ALE_PORT_NOLEARN, 1);
584 cpsw_ale_control_set(ale, i,
585 ALE_PORT_NO_SA_UPDATE, 1);
586 }
587
588 /* Clear All Untouched entries */
589 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
590 do {
591 cpu_relax();
592 if (cpsw_ale_control_get(ale, 0, ALE_AGEOUT))
593 break;
594 } while (time_after(timeout, jiffies));
595 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
596
597 /* Clear all mcast from ALE */
598 cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS <<
599 priv->host_port);
600
601 /* Flood All Unicast Packets to Host port */
602 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1);
603 dev_dbg(&ndev->dev, "promiscuity enabled\n");
604 } else {
605 /* Flood All Unicast Packets to Host port */
606 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);
607
608 /* Enable Learn for all ports */
609 for (i = 0; i < priv->data.slaves; i++) {
610 cpsw_ale_control_set(ale, i,
611 ALE_PORT_NOLEARN, 0);
612 cpsw_ale_control_set(ale, i,
613 ALE_PORT_NO_SA_UPDATE, 0);
614 }
615 dev_dbg(&ndev->dev, "promiscuity disabled\n");
616 }
617 }
618 }
619
620 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
621 {
622 struct cpsw_priv *priv = netdev_priv(ndev);
623
624 if (ndev->flags & IFF_PROMISC) {
625 /* Enable promiscuous mode */
626 cpsw_set_promiscious(ndev, true);
627 return;
628 } else {
629 /* Disable promiscuous mode */
630 cpsw_set_promiscious(ndev, false);
631 }
632
633 /* Clear all mcast from ALE */
634 cpsw_ale_flush_multicast(priv->ale, ALE_ALL_PORTS << priv->host_port);
635
636 if (!netdev_mc_empty(ndev)) {
637 struct netdev_hw_addr *ha;
638
639 /* program multicast address list into ALE register */
640 netdev_for_each_mc_addr(ha, ndev) {
641 cpsw_add_mcast(priv, (u8 *)ha->addr);
642 }
643 }
644 }
645
646 static void cpsw_intr_enable(struct cpsw_priv *priv)
647 {
648 __raw_writel(0xFF, &priv->wr_regs->tx_en);
649 __raw_writel(0xFF, &priv->wr_regs->rx_en);
650
651 cpdma_ctlr_int_ctrl(priv->dma, true);
652 return;
653 }
654
655 static void cpsw_intr_disable(struct cpsw_priv *priv)
656 {
657 __raw_writel(0, &priv->wr_regs->tx_en);
658 __raw_writel(0, &priv->wr_regs->rx_en);
659
660 cpdma_ctlr_int_ctrl(priv->dma, false);
661 return;
662 }
663
664 static void cpsw_tx_handler(void *token, int len, int status)
665 {
666 struct sk_buff *skb = token;
667 struct net_device *ndev = skb->dev;
668 struct cpsw_priv *priv = netdev_priv(ndev);
669
670 /* Check whether the queue is stopped due to stalled tx dma, if the
671 * queue is stopped then start the queue as we have free desc for tx
672 */
673 if (unlikely(netif_queue_stopped(ndev)))
674 netif_wake_queue(ndev);
675 cpts_tx_timestamp(priv->cpts, skb);
676 priv->stats.tx_packets++;
677 priv->stats.tx_bytes += len;
678 dev_kfree_skb_any(skb);
679 }
680
681 static void cpsw_rx_handler(void *token, int len, int status)
682 {
683 struct sk_buff *skb = token;
684 struct sk_buff *new_skb;
685 struct net_device *ndev = skb->dev;
686 struct cpsw_priv *priv = netdev_priv(ndev);
687 int ret = 0;
688
689 cpsw_dual_emac_src_port_detect(status, priv, ndev, skb);
690
691 if (unlikely(status < 0)) {
692 /* the interface is going down, skbs are purged */
693 dev_kfree_skb_any(skb);
694 return;
695 }
696
697 new_skb = netdev_alloc_skb_ip_align(ndev, priv->rx_packet_max);
698 if (new_skb) {
699 skb_put(skb, len);
700 cpts_rx_timestamp(priv->cpts, skb);
701 skb->protocol = eth_type_trans(skb, ndev);
702 netif_receive_skb(skb);
703 priv->stats.rx_bytes += len;
704 priv->stats.rx_packets++;
705 } else {
706 priv->stats.rx_dropped++;
707 new_skb = skb;
708 }
709
710 ret = cpdma_chan_submit(priv->rxch, new_skb, new_skb->data,
711 skb_tailroom(new_skb), 0);
712 if (WARN_ON(ret < 0))
713 dev_kfree_skb_any(new_skb);
714 }
715
716 static irqreturn_t cpsw_interrupt(int irq, void *dev_id)
717 {
718 struct cpsw_priv *priv = dev_id;
719
720 cpsw_intr_disable(priv);
721 if (priv->irq_enabled == true) {
722 cpsw_disable_irq(priv);
723 priv->irq_enabled = false;
724 }
725
726 if (netif_running(priv->ndev)) {
727 napi_schedule(&priv->napi);
728 return IRQ_HANDLED;
729 }
730
731 priv = cpsw_get_slave_priv(priv, 1);
732 if (!priv)
733 return IRQ_NONE;
734
735 if (netif_running(priv->ndev)) {
736 napi_schedule(&priv->napi);
737 return IRQ_HANDLED;
738 }
739 return IRQ_NONE;
740 }
741
742 static int cpsw_poll(struct napi_struct *napi, int budget)
743 {
744 struct cpsw_priv *priv = napi_to_priv(napi);
745 int num_tx, num_rx;
746
747 num_tx = cpdma_chan_process(priv->txch, 128);
748 if (num_tx)
749 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
750
751 num_rx = cpdma_chan_process(priv->rxch, budget);
752 if (num_rx < budget) {
753 struct cpsw_priv *prim_cpsw;
754
755 napi_complete(napi);
756 cpsw_intr_enable(priv);
757 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
758 prim_cpsw = cpsw_get_slave_priv(priv, 0);
759 if (prim_cpsw->irq_enabled == false) {
760 prim_cpsw->irq_enabled = true;
761 cpsw_enable_irq(priv);
762 }
763 }
764
765 if (num_rx || num_tx)
766 cpsw_dbg(priv, intr, "poll %d rx, %d tx pkts\n",
767 num_rx, num_tx);
768
769 return num_rx;
770 }
771
772 static inline void soft_reset(const char *module, void __iomem *reg)
773 {
774 unsigned long timeout = jiffies + HZ;
775
776 __raw_writel(1, reg);
777 do {
778 cpu_relax();
779 } while ((__raw_readl(reg) & 1) && time_after(timeout, jiffies));
780
781 WARN(__raw_readl(reg) & 1, "failed to soft-reset %s\n", module);
782 }
783
784 #define mac_hi(mac) (((mac)[0] << 0) | ((mac)[1] << 8) | \
785 ((mac)[2] << 16) | ((mac)[3] << 24))
786 #define mac_lo(mac) (((mac)[4] << 0) | ((mac)[5] << 8))
787
788 static void cpsw_set_slave_mac(struct cpsw_slave *slave,
789 struct cpsw_priv *priv)
790 {
791 slave_write(slave, mac_hi(priv->mac_addr), SA_HI);
792 slave_write(slave, mac_lo(priv->mac_addr), SA_LO);
793 }
794
795 static void _cpsw_adjust_link(struct cpsw_slave *slave,
796 struct cpsw_priv *priv, bool *link)
797 {
798 struct phy_device *phy = slave->phy;
799 u32 mac_control = 0;
800 u32 slave_port;
801
802 if (!phy)
803 return;
804
805 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
806
807 if (phy->link) {
808 mac_control = priv->data.mac_control;
809
810 /* enable forwarding */
811 cpsw_ale_control_set(priv->ale, slave_port,
812 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
813
814 if (phy->speed == 1000)
815 mac_control |= BIT(7); /* GIGABITEN */
816 if (phy->duplex)
817 mac_control |= BIT(0); /* FULLDUPLEXEN */
818
819 /* set speed_in input in case RMII mode is used in 100Mbps */
820 if (phy->speed == 100)
821 mac_control |= BIT(15);
822 else if (phy->speed == 10)
823 mac_control |= BIT(18); /* In Band mode */
824
825 *link = true;
826 } else {
827 mac_control = 0;
828 /* disable forwarding */
829 cpsw_ale_control_set(priv->ale, slave_port,
830 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
831 }
832
833 if (mac_control != slave->mac_control) {
834 phy_print_status(phy);
835 __raw_writel(mac_control, &slave->sliver->mac_control);
836 }
837
838 slave->mac_control = mac_control;
839 }
840
841 static void cpsw_adjust_link(struct net_device *ndev)
842 {
843 struct cpsw_priv *priv = netdev_priv(ndev);
844 bool link = false;
845
846 for_each_slave(priv, _cpsw_adjust_link, priv, &link);
847
848 if (link) {
849 netif_carrier_on(ndev);
850 if (netif_running(ndev))
851 netif_wake_queue(ndev);
852 } else {
853 netif_carrier_off(ndev);
854 netif_stop_queue(ndev);
855 }
856 }
857
858 static int cpsw_get_coalesce(struct net_device *ndev,
859 struct ethtool_coalesce *coal)
860 {
861 struct cpsw_priv *priv = netdev_priv(ndev);
862
863 coal->rx_coalesce_usecs = priv->coal_intvl;
864 return 0;
865 }
866
867 static int cpsw_set_coalesce(struct net_device *ndev,
868 struct ethtool_coalesce *coal)
869 {
870 struct cpsw_priv *priv = netdev_priv(ndev);
871 u32 int_ctrl;
872 u32 num_interrupts = 0;
873 u32 prescale = 0;
874 u32 addnl_dvdr = 1;
875 u32 coal_intvl = 0;
876
877 if (!coal->rx_coalesce_usecs)
878 return -EINVAL;
879
880 coal_intvl = coal->rx_coalesce_usecs;
881
882 int_ctrl = readl(&priv->wr_regs->int_control);
883 prescale = priv->bus_freq_mhz * 4;
884
885 if (coal_intvl < CPSW_CMINTMIN_INTVL)
886 coal_intvl = CPSW_CMINTMIN_INTVL;
887
888 if (coal_intvl > CPSW_CMINTMAX_INTVL) {
889 /* Interrupt pacer works with 4us Pulse, we can
890 * throttle further by dilating the 4us pulse.
891 */
892 addnl_dvdr = CPSW_INTPRESCALE_MASK / prescale;
893
894 if (addnl_dvdr > 1) {
895 prescale *= addnl_dvdr;
896 if (coal_intvl > (CPSW_CMINTMAX_INTVL * addnl_dvdr))
897 coal_intvl = (CPSW_CMINTMAX_INTVL
898 * addnl_dvdr);
899 } else {
900 addnl_dvdr = 1;
901 coal_intvl = CPSW_CMINTMAX_INTVL;
902 }
903 }
904
905 num_interrupts = (1000 * addnl_dvdr) / coal_intvl;
906 writel(num_interrupts, &priv->wr_regs->rx_imax);
907 writel(num_interrupts, &priv->wr_regs->tx_imax);
908
909 int_ctrl |= CPSW_INTPACEEN;
910 int_ctrl &= (~CPSW_INTPRESCALE_MASK);
911 int_ctrl |= (prescale & CPSW_INTPRESCALE_MASK);
912 writel(int_ctrl, &priv->wr_regs->int_control);
913
914 cpsw_notice(priv, timer, "Set coalesce to %d usecs.\n", coal_intvl);
915 if (priv->data.dual_emac) {
916 int i;
917
918 for (i = 0; i < priv->data.slaves; i++) {
919 priv = netdev_priv(priv->slaves[i].ndev);
920 priv->coal_intvl = coal_intvl;
921 }
922 } else {
923 priv->coal_intvl = coal_intvl;
924 }
925
926 return 0;
927 }
928
929 static int cpsw_get_sset_count(struct net_device *ndev, int sset)
930 {
931 switch (sset) {
932 case ETH_SS_STATS:
933 return CPSW_STATS_LEN;
934 default:
935 return -EOPNOTSUPP;
936 }
937 }
938
939 static void cpsw_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
940 {
941 u8 *p = data;
942 int i;
943
944 switch (stringset) {
945 case ETH_SS_STATS:
946 for (i = 0; i < CPSW_STATS_LEN; i++) {
947 memcpy(p, cpsw_gstrings_stats[i].stat_string,
948 ETH_GSTRING_LEN);
949 p += ETH_GSTRING_LEN;
950 }
951 break;
952 }
953 }
954
955 static void cpsw_get_ethtool_stats(struct net_device *ndev,
956 struct ethtool_stats *stats, u64 *data)
957 {
958 struct cpsw_priv *priv = netdev_priv(ndev);
959 struct cpdma_chan_stats rx_stats;
960 struct cpdma_chan_stats tx_stats;
961 u32 val;
962 u8 *p;
963 int i;
964
965 /* Collect Davinci CPDMA stats for Rx and Tx Channel */
966 cpdma_chan_get_stats(priv->rxch, &rx_stats);
967 cpdma_chan_get_stats(priv->txch, &tx_stats);
968
969 for (i = 0; i < CPSW_STATS_LEN; i++) {
970 switch (cpsw_gstrings_stats[i].type) {
971 case CPSW_STATS:
972 val = readl(priv->hw_stats +
973 cpsw_gstrings_stats[i].stat_offset);
974 data[i] = val;
975 break;
976
977 case CPDMA_RX_STATS:
978 p = (u8 *)&rx_stats +
979 cpsw_gstrings_stats[i].stat_offset;
980 data[i] = *(u32 *)p;
981 break;
982
983 case CPDMA_TX_STATS:
984 p = (u8 *)&tx_stats +
985 cpsw_gstrings_stats[i].stat_offset;
986 data[i] = *(u32 *)p;
987 break;
988 }
989 }
990 }
991
992 static inline int __show_stat(char *buf, int maxlen, const char *name, u32 val)
993 {
994 static char *leader = "........................................";
995
996 if (!val)
997 return 0;
998 else
999 return snprintf(buf, maxlen, "%s %s %10d\n", name,
1000 leader + strlen(name), val);
1001 }
1002
1003 static int cpsw_common_res_usage_state(struct cpsw_priv *priv)
1004 {
1005 u32 i;
1006 u32 usage_count = 0;
1007
1008 if (!priv->data.dual_emac)
1009 return 0;
1010
1011 for (i = 0; i < priv->data.slaves; i++)
1012 if (priv->slaves[i].open_stat)
1013 usage_count++;
1014
1015 return usage_count;
1016 }
1017
1018 static inline int cpsw_tx_packet_submit(struct net_device *ndev,
1019 struct cpsw_priv *priv, struct sk_buff *skb)
1020 {
1021 if (!priv->data.dual_emac)
1022 return cpdma_chan_submit(priv->txch, skb, skb->data,
1023 skb->len, 0);
1024
1025 if (ndev == cpsw_get_slave_ndev(priv, 0))
1026 return cpdma_chan_submit(priv->txch, skb, skb->data,
1027 skb->len, 1);
1028 else
1029 return cpdma_chan_submit(priv->txch, skb, skb->data,
1030 skb->len, 2);
1031 }
1032
1033 static inline void cpsw_add_dual_emac_def_ale_entries(
1034 struct cpsw_priv *priv, struct cpsw_slave *slave,
1035 u32 slave_port)
1036 {
1037 u32 port_mask = 1 << slave_port | 1 << priv->host_port;
1038
1039 if (priv->version == CPSW_VERSION_1)
1040 slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
1041 else
1042 slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
1043 cpsw_ale_add_vlan(priv->ale, slave->port_vlan, port_mask,
1044 port_mask, port_mask, 0);
1045 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1046 port_mask, ALE_VLAN, slave->port_vlan, 0);
1047 cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1048 priv->host_port, ALE_VLAN, slave->port_vlan);
1049 }
1050
1051 static void soft_reset_slave(struct cpsw_slave *slave)
1052 {
1053 char name[32];
1054
1055 snprintf(name, sizeof(name), "slave-%d", slave->slave_num);
1056 soft_reset(name, &slave->sliver->soft_reset);
1057 }
1058
1059 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
1060 {
1061 u32 slave_port;
1062
1063 soft_reset_slave(slave);
1064
1065 /* setup priority mapping */
1066 __raw_writel(RX_PRIORITY_MAPPING, &slave->sliver->rx_pri_map);
1067
1068 switch (priv->version) {
1069 case CPSW_VERSION_1:
1070 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
1071 break;
1072 case CPSW_VERSION_2:
1073 case CPSW_VERSION_3:
1074 case CPSW_VERSION_4:
1075 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
1076 break;
1077 }
1078
1079 /* setup max packet size, and mac address */
1080 __raw_writel(priv->rx_packet_max, &slave->sliver->rx_maxlen);
1081 cpsw_set_slave_mac(slave, priv);
1082
1083 slave->mac_control = 0; /* no link yet */
1084
1085 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1086
1087 if (priv->data.dual_emac)
1088 cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
1089 else
1090 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1091 1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
1092
1093 slave->phy = phy_connect(priv->ndev, slave->data->phy_id,
1094 &cpsw_adjust_link, slave->data->phy_if);
1095 if (IS_ERR(slave->phy)) {
1096 dev_err(priv->dev, "phy %s not found on slave %d\n",
1097 slave->data->phy_id, slave->slave_num);
1098 slave->phy = NULL;
1099 } else {
1100 dev_info(priv->dev, "phy found : id is : 0x%x\n",
1101 slave->phy->phy_id);
1102 phy_start(slave->phy);
1103
1104 /* Configure GMII_SEL register */
1105 cpsw_phy_sel(&priv->pdev->dev, slave->phy->interface,
1106 slave->slave_num);
1107 }
1108 }
1109
1110 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
1111 {
1112 const int vlan = priv->data.default_vlan;
1113 const int port = priv->host_port;
1114 u32 reg;
1115 int i;
1116
1117 reg = (priv->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
1118 CPSW2_PORT_VLAN;
1119
1120 writel(vlan, &priv->host_port_regs->port_vlan);
1121
1122 for (i = 0; i < priv->data.slaves; i++)
1123 slave_write(priv->slaves + i, vlan, reg);
1124
1125 cpsw_ale_add_vlan(priv->ale, vlan, ALE_ALL_PORTS << port,
1126 ALE_ALL_PORTS << port, ALE_ALL_PORTS << port,
1127 (ALE_PORT_1 | ALE_PORT_2) << port);
1128 }
1129
1130 static void cpsw_init_host_port(struct cpsw_priv *priv)
1131 {
1132 u32 control_reg;
1133 u32 fifo_mode;
1134
1135 /* soft reset the controller and initialize ale */
1136 soft_reset("cpsw", &priv->regs->soft_reset);
1137 cpsw_ale_start(priv->ale);
1138
1139 /* switch to vlan unaware mode */
1140 cpsw_ale_control_set(priv->ale, priv->host_port, ALE_VLAN_AWARE,
1141 CPSW_ALE_VLAN_AWARE);
1142 control_reg = readl(&priv->regs->control);
1143 control_reg |= CPSW_VLAN_AWARE;
1144 writel(control_reg, &priv->regs->control);
1145 fifo_mode = (priv->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
1146 CPSW_FIFO_NORMAL_MODE;
1147 writel(fifo_mode, &priv->host_port_regs->tx_in_ctl);
1148
1149 /* setup host port priority mapping */
1150 __raw_writel(CPDMA_TX_PRIORITY_MAP,
1151 &priv->host_port_regs->cpdma_tx_pri_map);
1152 __raw_writel(0, &priv->host_port_regs->cpdma_rx_chan_map);
1153
1154 cpsw_ale_control_set(priv->ale, priv->host_port,
1155 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
1156
1157 if (!priv->data.dual_emac) {
1158 cpsw_ale_add_ucast(priv->ale, priv->mac_addr, priv->host_port,
1159 0, 0);
1160 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1161 1 << priv->host_port, 0, 0, ALE_MCAST_FWD_2);
1162 }
1163 }
1164
1165 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_priv *priv)
1166 {
1167 u32 slave_port;
1168
1169 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1170
1171 if (!slave->phy)
1172 return;
1173 phy_stop(slave->phy);
1174 phy_disconnect(slave->phy);
1175 slave->phy = NULL;
1176 cpsw_ale_control_set(priv->ale, slave_port,
1177 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
1178 }
1179
1180 static int cpsw_ndo_open(struct net_device *ndev)
1181 {
1182 struct cpsw_priv *priv = netdev_priv(ndev);
1183 struct cpsw_priv *prim_cpsw;
1184 int i, ret;
1185 u32 reg;
1186
1187 if (!cpsw_common_res_usage_state(priv))
1188 cpsw_intr_disable(priv);
1189 netif_carrier_off(ndev);
1190
1191 pm_runtime_get_sync(&priv->pdev->dev);
1192
1193 reg = priv->version;
1194
1195 dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
1196 CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
1197 CPSW_RTL_VERSION(reg));
1198
1199 /* initialize host and slave ports */
1200 if (!cpsw_common_res_usage_state(priv))
1201 cpsw_init_host_port(priv);
1202 for_each_slave(priv, cpsw_slave_open, priv);
1203
1204 /* Add default VLAN */
1205 if (!priv->data.dual_emac)
1206 cpsw_add_default_vlan(priv);
1207
1208 if (!cpsw_common_res_usage_state(priv)) {
1209 /* setup tx dma to fixed prio and zero offset */
1210 cpdma_control_set(priv->dma, CPDMA_TX_PRIO_FIXED, 1);
1211 cpdma_control_set(priv->dma, CPDMA_RX_BUFFER_OFFSET, 0);
1212
1213 /* disable priority elevation */
1214 __raw_writel(0, &priv->regs->ptype);
1215
1216 /* enable statistics collection only on all ports */
1217 __raw_writel(0x7, &priv->regs->stat_port_en);
1218
1219 if (WARN_ON(!priv->data.rx_descs))
1220 priv->data.rx_descs = 128;
1221
1222 for (i = 0; i < priv->data.rx_descs; i++) {
1223 struct sk_buff *skb;
1224
1225 ret = -ENOMEM;
1226 skb = __netdev_alloc_skb_ip_align(priv->ndev,
1227 priv->rx_packet_max, GFP_KERNEL);
1228 if (!skb)
1229 goto err_cleanup;
1230 ret = cpdma_chan_submit(priv->rxch, skb, skb->data,
1231 skb_tailroom(skb), 0);
1232 if (ret < 0) {
1233 kfree_skb(skb);
1234 goto err_cleanup;
1235 }
1236 }
1237 /* continue even if we didn't manage to submit all
1238 * receive descs
1239 */
1240 cpsw_info(priv, ifup, "submitted %d rx descriptors\n", i);
1241
1242 if (cpts_register(&priv->pdev->dev, priv->cpts,
1243 priv->data.cpts_clock_mult,
1244 priv->data.cpts_clock_shift))
1245 dev_err(priv->dev, "error registering cpts device\n");
1246
1247 }
1248
1249 /* Enable Interrupt pacing if configured */
1250 if (priv->coal_intvl != 0) {
1251 struct ethtool_coalesce coal;
1252
1253 coal.rx_coalesce_usecs = (priv->coal_intvl << 4);
1254 cpsw_set_coalesce(ndev, &coal);
1255 }
1256
1257 prim_cpsw = cpsw_get_slave_priv(priv, 0);
1258 if (prim_cpsw->irq_enabled == false) {
1259 if ((priv == prim_cpsw) || !netif_running(prim_cpsw->ndev)) {
1260 prim_cpsw->irq_enabled = true;
1261 cpsw_enable_irq(prim_cpsw);
1262 }
1263 }
1264
1265 napi_enable(&priv->napi);
1266 cpdma_ctlr_start(priv->dma);
1267 cpsw_intr_enable(priv);
1268 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
1269 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
1270
1271 if (priv->data.dual_emac)
1272 priv->slaves[priv->emac_port].open_stat = true;
1273 return 0;
1274
1275 err_cleanup:
1276 cpdma_ctlr_stop(priv->dma);
1277 for_each_slave(priv, cpsw_slave_stop, priv);
1278 pm_runtime_put_sync(&priv->pdev->dev);
1279 netif_carrier_off(priv->ndev);
1280 return ret;
1281 }
1282
1283 static int cpsw_ndo_stop(struct net_device *ndev)
1284 {
1285 struct cpsw_priv *priv = netdev_priv(ndev);
1286
1287 cpsw_info(priv, ifdown, "shutting down cpsw device\n");
1288 netif_stop_queue(priv->ndev);
1289 napi_disable(&priv->napi);
1290 netif_carrier_off(priv->ndev);
1291
1292 if (cpsw_common_res_usage_state(priv) <= 1) {
1293 cpts_unregister(priv->cpts);
1294 cpsw_intr_disable(priv);
1295 cpdma_ctlr_int_ctrl(priv->dma, false);
1296 cpdma_ctlr_stop(priv->dma);
1297 cpsw_ale_stop(priv->ale);
1298 }
1299 for_each_slave(priv, cpsw_slave_stop, priv);
1300 pm_runtime_put_sync(&priv->pdev->dev);
1301 if (priv->data.dual_emac)
1302 priv->slaves[priv->emac_port].open_stat = false;
1303 return 0;
1304 }
1305
1306 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
1307 struct net_device *ndev)
1308 {
1309 struct cpsw_priv *priv = netdev_priv(ndev);
1310 int ret;
1311
1312 ndev->trans_start = jiffies;
1313
1314 if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
1315 cpsw_err(priv, tx_err, "packet pad failed\n");
1316 priv->stats.tx_dropped++;
1317 return NETDEV_TX_OK;
1318 }
1319
1320 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
1321 priv->cpts->tx_enable)
1322 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
1323
1324 skb_tx_timestamp(skb);
1325
1326 ret = cpsw_tx_packet_submit(ndev, priv, skb);
1327 if (unlikely(ret != 0)) {
1328 cpsw_err(priv, tx_err, "desc submit failed\n");
1329 goto fail;
1330 }
1331
1332 /* If there is no more tx desc left free then we need to
1333 * tell the kernel to stop sending us tx frames.
1334 */
1335 if (unlikely(!cpdma_check_free_tx_desc(priv->txch)))
1336 netif_stop_queue(ndev);
1337
1338 return NETDEV_TX_OK;
1339 fail:
1340 priv->stats.tx_dropped++;
1341 netif_stop_queue(ndev);
1342 return NETDEV_TX_BUSY;
1343 }
1344
1345 #ifdef CONFIG_TI_CPTS
1346
1347 static void cpsw_hwtstamp_v1(struct cpsw_priv *priv)
1348 {
1349 struct cpsw_slave *slave = &priv->slaves[priv->data.active_slave];
1350 u32 ts_en, seq_id;
1351
1352 if (!priv->cpts->tx_enable && !priv->cpts->rx_enable) {
1353 slave_write(slave, 0, CPSW1_TS_CTL);
1354 return;
1355 }
1356
1357 seq_id = (30 << CPSW_V1_SEQ_ID_OFS_SHIFT) | ETH_P_1588;
1358 ts_en = EVENT_MSG_BITS << CPSW_V1_MSG_TYPE_OFS;
1359
1360 if (priv->cpts->tx_enable)
1361 ts_en |= CPSW_V1_TS_TX_EN;
1362
1363 if (priv->cpts->rx_enable)
1364 ts_en |= CPSW_V1_TS_RX_EN;
1365
1366 slave_write(slave, ts_en, CPSW1_TS_CTL);
1367 slave_write(slave, seq_id, CPSW1_TS_SEQ_LTYPE);
1368 }
1369
1370 static void cpsw_hwtstamp_v2(struct cpsw_priv *priv)
1371 {
1372 struct cpsw_slave *slave;
1373 u32 ctrl, mtype;
1374
1375 if (priv->data.dual_emac)
1376 slave = &priv->slaves[priv->emac_port];
1377 else
1378 slave = &priv->slaves[priv->data.active_slave];
1379
1380 ctrl = slave_read(slave, CPSW2_CONTROL);
1381 ctrl &= ~CTRL_ALL_TS_MASK;
1382
1383 if (priv->cpts->tx_enable)
1384 ctrl |= CTRL_TX_TS_BITS;
1385
1386 if (priv->cpts->rx_enable)
1387 ctrl |= CTRL_RX_TS_BITS;
1388
1389 mtype = (30 << TS_SEQ_ID_OFFSET_SHIFT) | EVENT_MSG_BITS;
1390
1391 slave_write(slave, mtype, CPSW2_TS_SEQ_MTYPE);
1392 slave_write(slave, ctrl, CPSW2_CONTROL);
1393 __raw_writel(ETH_P_1588, &priv->regs->ts_ltype);
1394 }
1395
1396 static int cpsw_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
1397 {
1398 struct cpsw_priv *priv = netdev_priv(dev);
1399 struct cpts *cpts = priv->cpts;
1400 struct hwtstamp_config cfg;
1401
1402 if (priv->version != CPSW_VERSION_1 &&
1403 priv->version != CPSW_VERSION_2)
1404 return -EOPNOTSUPP;
1405
1406 if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
1407 return -EFAULT;
1408
1409 /* reserved for future extensions */
1410 if (cfg.flags)
1411 return -EINVAL;
1412
1413 if (cfg.tx_type != HWTSTAMP_TX_OFF && cfg.tx_type != HWTSTAMP_TX_ON)
1414 return -ERANGE;
1415
1416 switch (cfg.rx_filter) {
1417 case HWTSTAMP_FILTER_NONE:
1418 cpts->rx_enable = 0;
1419 break;
1420 case HWTSTAMP_FILTER_ALL:
1421 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
1422 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
1423 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
1424 return -ERANGE;
1425 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
1426 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
1427 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
1428 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
1429 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
1430 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
1431 case HWTSTAMP_FILTER_PTP_V2_EVENT:
1432 case HWTSTAMP_FILTER_PTP_V2_SYNC:
1433 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
1434 cpts->rx_enable = 1;
1435 cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
1436 break;
1437 default:
1438 return -ERANGE;
1439 }
1440
1441 cpts->tx_enable = cfg.tx_type == HWTSTAMP_TX_ON;
1442
1443 switch (priv->version) {
1444 case CPSW_VERSION_1:
1445 cpsw_hwtstamp_v1(priv);
1446 break;
1447 case CPSW_VERSION_2:
1448 cpsw_hwtstamp_v2(priv);
1449 break;
1450 default:
1451 WARN_ON(1);
1452 }
1453
1454 return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1455 }
1456
1457 static int cpsw_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
1458 {
1459 struct cpsw_priv *priv = netdev_priv(dev);
1460 struct cpts *cpts = priv->cpts;
1461 struct hwtstamp_config cfg;
1462
1463 if (priv->version != CPSW_VERSION_1 &&
1464 priv->version != CPSW_VERSION_2)
1465 return -EOPNOTSUPP;
1466
1467 cfg.flags = 0;
1468 cfg.tx_type = cpts->tx_enable ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF;
1469 cfg.rx_filter = (cpts->rx_enable ?
1470 HWTSTAMP_FILTER_PTP_V2_EVENT : HWTSTAMP_FILTER_NONE);
1471
1472 return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1473 }
1474
1475 #endif /*CONFIG_TI_CPTS*/
1476
1477 static int cpsw_ndo_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
1478 {
1479 struct cpsw_priv *priv = netdev_priv(dev);
1480 struct mii_ioctl_data *data = if_mii(req);
1481 int slave_no = cpsw_slave_index(priv);
1482
1483 if (!netif_running(dev))
1484 return -EINVAL;
1485
1486 switch (cmd) {
1487 #ifdef CONFIG_TI_CPTS
1488 case SIOCSHWTSTAMP:
1489 return cpsw_hwtstamp_set(dev, req);
1490 case SIOCGHWTSTAMP:
1491 return cpsw_hwtstamp_get(dev, req);
1492 #endif
1493 case SIOCGMIIPHY:
1494 data->phy_id = priv->slaves[slave_no].phy->addr;
1495 break;
1496 default:
1497 return -ENOTSUPP;
1498 }
1499
1500 return 0;
1501 }
1502
1503 static void cpsw_ndo_tx_timeout(struct net_device *ndev)
1504 {
1505 struct cpsw_priv *priv = netdev_priv(ndev);
1506
1507 cpsw_err(priv, tx_err, "transmit timeout, restarting dma\n");
1508 priv->stats.tx_errors++;
1509 cpsw_intr_disable(priv);
1510 cpdma_ctlr_int_ctrl(priv->dma, false);
1511 cpdma_chan_stop(priv->txch);
1512 cpdma_chan_start(priv->txch);
1513 cpdma_ctlr_int_ctrl(priv->dma, true);
1514 cpsw_intr_enable(priv);
1515 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
1516 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
1517
1518 }
1519
1520 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
1521 {
1522 struct cpsw_priv *priv = netdev_priv(ndev);
1523 struct sockaddr *addr = (struct sockaddr *)p;
1524 int flags = 0;
1525 u16 vid = 0;
1526
1527 if (!is_valid_ether_addr(addr->sa_data))
1528 return -EADDRNOTAVAIL;
1529
1530 if (priv->data.dual_emac) {
1531 vid = priv->slaves[priv->emac_port].port_vlan;
1532 flags = ALE_VLAN;
1533 }
1534
1535 cpsw_ale_del_ucast(priv->ale, priv->mac_addr, priv->host_port,
1536 flags, vid);
1537 cpsw_ale_add_ucast(priv->ale, addr->sa_data, priv->host_port,
1538 flags, vid);
1539
1540 memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
1541 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
1542 for_each_slave(priv, cpsw_set_slave_mac, priv);
1543
1544 return 0;
1545 }
1546
1547 static struct net_device_stats *cpsw_ndo_get_stats(struct net_device *ndev)
1548 {
1549 struct cpsw_priv *priv = netdev_priv(ndev);
1550 return &priv->stats;
1551 }
1552
1553 #ifdef CONFIG_NET_POLL_CONTROLLER
1554 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1555 {
1556 struct cpsw_priv *priv = netdev_priv(ndev);
1557
1558 cpsw_intr_disable(priv);
1559 cpdma_ctlr_int_ctrl(priv->dma, false);
1560 cpsw_interrupt(ndev->irq, priv);
1561 cpdma_ctlr_int_ctrl(priv->dma, true);
1562 cpsw_intr_enable(priv);
1563 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
1564 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
1565
1566 }
1567 #endif
1568
1569 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
1570 unsigned short vid)
1571 {
1572 int ret;
1573
1574 ret = cpsw_ale_add_vlan(priv->ale, vid,
1575 ALE_ALL_PORTS << priv->host_port,
1576 0, ALE_ALL_PORTS << priv->host_port,
1577 (ALE_PORT_1 | ALE_PORT_2) << priv->host_port);
1578 if (ret != 0)
1579 return ret;
1580
1581 ret = cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1582 priv->host_port, ALE_VLAN, vid);
1583 if (ret != 0)
1584 goto clean_vid;
1585
1586 ret = cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1587 ALE_ALL_PORTS << priv->host_port,
1588 ALE_VLAN, vid, 0);
1589 if (ret != 0)
1590 goto clean_vlan_ucast;
1591 return 0;
1592
1593 clean_vlan_ucast:
1594 cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1595 priv->host_port, ALE_VLAN, vid);
1596 clean_vid:
1597 cpsw_ale_del_vlan(priv->ale, vid, 0);
1598 return ret;
1599 }
1600
1601 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1602 __be16 proto, u16 vid)
1603 {
1604 struct cpsw_priv *priv = netdev_priv(ndev);
1605
1606 if (vid == priv->data.default_vlan)
1607 return 0;
1608
1609 dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1610 return cpsw_add_vlan_ale_entry(priv, vid);
1611 }
1612
1613 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1614 __be16 proto, u16 vid)
1615 {
1616 struct cpsw_priv *priv = netdev_priv(ndev);
1617 int ret;
1618
1619 if (vid == priv->data.default_vlan)
1620 return 0;
1621
1622 dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1623 ret = cpsw_ale_del_vlan(priv->ale, vid, 0);
1624 if (ret != 0)
1625 return ret;
1626
1627 ret = cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1628 priv->host_port, ALE_VLAN, vid);
1629 if (ret != 0)
1630 return ret;
1631
1632 return cpsw_ale_del_mcast(priv->ale, priv->ndev->broadcast,
1633 0, ALE_VLAN, vid);
1634 }
1635
1636 static const struct net_device_ops cpsw_netdev_ops = {
1637 .ndo_open = cpsw_ndo_open,
1638 .ndo_stop = cpsw_ndo_stop,
1639 .ndo_start_xmit = cpsw_ndo_start_xmit,
1640 .ndo_set_mac_address = cpsw_ndo_set_mac_address,
1641 .ndo_do_ioctl = cpsw_ndo_ioctl,
1642 .ndo_validate_addr = eth_validate_addr,
1643 .ndo_change_mtu = eth_change_mtu,
1644 .ndo_tx_timeout = cpsw_ndo_tx_timeout,
1645 .ndo_get_stats = cpsw_ndo_get_stats,
1646 .ndo_set_rx_mode = cpsw_ndo_set_rx_mode,
1647 #ifdef CONFIG_NET_POLL_CONTROLLER
1648 .ndo_poll_controller = cpsw_ndo_poll_controller,
1649 #endif
1650 .ndo_vlan_rx_add_vid = cpsw_ndo_vlan_rx_add_vid,
1651 .ndo_vlan_rx_kill_vid = cpsw_ndo_vlan_rx_kill_vid,
1652 };
1653
1654 static void cpsw_get_drvinfo(struct net_device *ndev,
1655 struct ethtool_drvinfo *info)
1656 {
1657 struct cpsw_priv *priv = netdev_priv(ndev);
1658
1659 strlcpy(info->driver, "TI CPSW Driver v1.0", sizeof(info->driver));
1660 strlcpy(info->version, "1.0", sizeof(info->version));
1661 strlcpy(info->bus_info, priv->pdev->name, sizeof(info->bus_info));
1662 }
1663
1664 static u32 cpsw_get_msglevel(struct net_device *ndev)
1665 {
1666 struct cpsw_priv *priv = netdev_priv(ndev);
1667 return priv->msg_enable;
1668 }
1669
1670 static void cpsw_set_msglevel(struct net_device *ndev, u32 value)
1671 {
1672 struct cpsw_priv *priv = netdev_priv(ndev);
1673 priv->msg_enable = value;
1674 }
1675
1676 static int cpsw_get_ts_info(struct net_device *ndev,
1677 struct ethtool_ts_info *info)
1678 {
1679 #ifdef CONFIG_TI_CPTS
1680 struct cpsw_priv *priv = netdev_priv(ndev);
1681
1682 info->so_timestamping =
1683 SOF_TIMESTAMPING_TX_HARDWARE |
1684 SOF_TIMESTAMPING_TX_SOFTWARE |
1685 SOF_TIMESTAMPING_RX_HARDWARE |
1686 SOF_TIMESTAMPING_RX_SOFTWARE |
1687 SOF_TIMESTAMPING_SOFTWARE |
1688 SOF_TIMESTAMPING_RAW_HARDWARE;
1689 info->phc_index = priv->cpts->phc_index;
1690 info->tx_types =
1691 (1 << HWTSTAMP_TX_OFF) |
1692 (1 << HWTSTAMP_TX_ON);
1693 info->rx_filters =
1694 (1 << HWTSTAMP_FILTER_NONE) |
1695 (1 << HWTSTAMP_FILTER_PTP_V2_EVENT);
1696 #else
1697 info->so_timestamping =
1698 SOF_TIMESTAMPING_TX_SOFTWARE |
1699 SOF_TIMESTAMPING_RX_SOFTWARE |
1700 SOF_TIMESTAMPING_SOFTWARE;
1701 info->phc_index = -1;
1702 info->tx_types = 0;
1703 info->rx_filters = 0;
1704 #endif
1705 return 0;
1706 }
1707
1708 static int cpsw_get_settings(struct net_device *ndev,
1709 struct ethtool_cmd *ecmd)
1710 {
1711 struct cpsw_priv *priv = netdev_priv(ndev);
1712 int slave_no = cpsw_slave_index(priv);
1713
1714 if (priv->slaves[slave_no].phy)
1715 return phy_ethtool_gset(priv->slaves[slave_no].phy, ecmd);
1716 else
1717 return -EOPNOTSUPP;
1718 }
1719
1720 static int cpsw_set_settings(struct net_device *ndev, struct ethtool_cmd *ecmd)
1721 {
1722 struct cpsw_priv *priv = netdev_priv(ndev);
1723 int slave_no = cpsw_slave_index(priv);
1724
1725 if (priv->slaves[slave_no].phy)
1726 return phy_ethtool_sset(priv->slaves[slave_no].phy, ecmd);
1727 else
1728 return -EOPNOTSUPP;
1729 }
1730
1731 static void cpsw_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1732 {
1733 struct cpsw_priv *priv = netdev_priv(ndev);
1734 int slave_no = cpsw_slave_index(priv);
1735
1736 wol->supported = 0;
1737 wol->wolopts = 0;
1738
1739 if (priv->slaves[slave_no].phy)
1740 phy_ethtool_get_wol(priv->slaves[slave_no].phy, wol);
1741 }
1742
1743 static int cpsw_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1744 {
1745 struct cpsw_priv *priv = netdev_priv(ndev);
1746 int slave_no = cpsw_slave_index(priv);
1747
1748 if (priv->slaves[slave_no].phy)
1749 return phy_ethtool_set_wol(priv->slaves[slave_no].phy, wol);
1750 else
1751 return -EOPNOTSUPP;
1752 }
1753
1754 static const struct ethtool_ops cpsw_ethtool_ops = {
1755 .get_drvinfo = cpsw_get_drvinfo,
1756 .get_msglevel = cpsw_get_msglevel,
1757 .set_msglevel = cpsw_set_msglevel,
1758 .get_link = ethtool_op_get_link,
1759 .get_ts_info = cpsw_get_ts_info,
1760 .get_settings = cpsw_get_settings,
1761 .set_settings = cpsw_set_settings,
1762 .get_coalesce = cpsw_get_coalesce,
1763 .set_coalesce = cpsw_set_coalesce,
1764 .get_sset_count = cpsw_get_sset_count,
1765 .get_strings = cpsw_get_strings,
1766 .get_ethtool_stats = cpsw_get_ethtool_stats,
1767 .get_wol = cpsw_get_wol,
1768 .set_wol = cpsw_set_wol,
1769 };
1770
1771 static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv,
1772 u32 slave_reg_ofs, u32 sliver_reg_ofs)
1773 {
1774 void __iomem *regs = priv->regs;
1775 int slave_num = slave->slave_num;
1776 struct cpsw_slave_data *data = priv->data.slave_data + slave_num;
1777
1778 slave->data = data;
1779 slave->regs = regs + slave_reg_ofs;
1780 slave->sliver = regs + sliver_reg_ofs;
1781 slave->port_vlan = data->dual_emac_res_vlan;
1782 }
1783
1784 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1785 struct platform_device *pdev)
1786 {
1787 struct device_node *node = pdev->dev.of_node;
1788 struct device_node *slave_node;
1789 int i = 0, ret;
1790 u32 prop;
1791
1792 if (!node)
1793 return -EINVAL;
1794
1795 if (of_property_read_u32(node, "slaves", &prop)) {
1796 pr_err("Missing slaves property in the DT.\n");
1797 return -EINVAL;
1798 }
1799 data->slaves = prop;
1800
1801 if (of_property_read_u32(node, "active_slave", &prop)) {
1802 pr_err("Missing active_slave property in the DT.\n");
1803 return -EINVAL;
1804 }
1805 data->active_slave = prop;
1806
1807 if (of_property_read_u32(node, "cpts_clock_mult", &prop)) {
1808 pr_err("Missing cpts_clock_mult property in the DT.\n");
1809 return -EINVAL;
1810 }
1811 data->cpts_clock_mult = prop;
1812
1813 if (of_property_read_u32(node, "cpts_clock_shift", &prop)) {
1814 pr_err("Missing cpts_clock_shift property in the DT.\n");
1815 return -EINVAL;
1816 }
1817 data->cpts_clock_shift = prop;
1818
1819 data->slave_data = devm_kzalloc(&pdev->dev, data->slaves
1820 * sizeof(struct cpsw_slave_data),
1821 GFP_KERNEL);
1822 if (!data->slave_data)
1823 return -ENOMEM;
1824
1825 if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1826 pr_err("Missing cpdma_channels property in the DT.\n");
1827 return -EINVAL;
1828 }
1829 data->channels = prop;
1830
1831 if (of_property_read_u32(node, "ale_entries", &prop)) {
1832 pr_err("Missing ale_entries property in the DT.\n");
1833 return -EINVAL;
1834 }
1835 data->ale_entries = prop;
1836
1837 if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1838 pr_err("Missing bd_ram_size property in the DT.\n");
1839 return -EINVAL;
1840 }
1841 data->bd_ram_size = prop;
1842
1843 if (of_property_read_u32(node, "rx_descs", &prop)) {
1844 pr_err("Missing rx_descs property in the DT.\n");
1845 return -EINVAL;
1846 }
1847 data->rx_descs = prop;
1848
1849 if (of_property_read_u32(node, "mac_control", &prop)) {
1850 pr_err("Missing mac_control property in the DT.\n");
1851 return -EINVAL;
1852 }
1853 data->mac_control = prop;
1854
1855 if (of_property_read_bool(node, "dual_emac"))
1856 data->dual_emac = 1;
1857
1858 /*
1859 * Populate all the child nodes here...
1860 */
1861 ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
1862 /* We do not want to force this, as in some cases may not have child */
1863 if (ret)
1864 pr_warn("Doesn't have any child node\n");
1865
1866 for_each_child_of_node(node, slave_node) {
1867 struct cpsw_slave_data *slave_data = data->slave_data + i;
1868 const void *mac_addr = NULL;
1869 u32 phyid;
1870 int lenp;
1871 const __be32 *parp;
1872 struct device_node *mdio_node;
1873 struct platform_device *mdio;
1874
1875 /* This is no slave child node, continue */
1876 if (strcmp(slave_node->name, "slave"))
1877 continue;
1878
1879 parp = of_get_property(slave_node, "phy_id", &lenp);
1880 if ((parp == NULL) || (lenp != (sizeof(void *) * 2))) {
1881 pr_err("Missing slave[%d] phy_id property\n", i);
1882 return -EINVAL;
1883 }
1884 mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
1885 phyid = be32_to_cpup(parp+1);
1886 mdio = of_find_device_by_node(mdio_node);
1887
1888 if (strncmp(mdio->name, "gpio", 4) == 0) {
1889 /* GPIO bitbang MDIO driver attached */
1890 struct mii_bus *bus = dev_get_drvdata(&mdio->dev);
1891
1892 snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
1893 PHY_ID_FMT, bus->id, phyid);
1894 } else {
1895 /* davinci MDIO driver attached */
1896 snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
1897 PHY_ID_FMT, mdio->name, phyid);
1898 }
1899
1900 mac_addr = of_get_mac_address(slave_node);
1901 if (mac_addr)
1902 memcpy(slave_data->mac_addr, mac_addr, ETH_ALEN);
1903
1904 slave_data->phy_if = of_get_phy_mode(slave_node);
1905 if (slave_data->phy_if < 0) {
1906 pr_err("Missing or malformed slave[%d] phy-mode property\n",
1907 i);
1908 return slave_data->phy_if;
1909 }
1910
1911 if (data->dual_emac) {
1912 if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
1913 &prop)) {
1914 pr_err("Missing dual_emac_res_vlan in DT.\n");
1915 slave_data->dual_emac_res_vlan = i+1;
1916 pr_err("Using %d as Reserved VLAN for %d slave\n",
1917 slave_data->dual_emac_res_vlan, i);
1918 } else {
1919 slave_data->dual_emac_res_vlan = prop;
1920 }
1921 }
1922
1923 i++;
1924 if (i == data->slaves)
1925 break;
1926 }
1927
1928 return 0;
1929 }
1930
1931 static int cpsw_probe_dual_emac(struct platform_device *pdev,
1932 struct cpsw_priv *priv)
1933 {
1934 struct cpsw_platform_data *data = &priv->data;
1935 struct net_device *ndev;
1936 struct cpsw_priv *priv_sl2;
1937 int ret = 0, i;
1938
1939 ndev = alloc_etherdev(sizeof(struct cpsw_priv));
1940 if (!ndev) {
1941 pr_err("cpsw: error allocating net_device\n");
1942 return -ENOMEM;
1943 }
1944
1945 priv_sl2 = netdev_priv(ndev);
1946 spin_lock_init(&priv_sl2->lock);
1947 priv_sl2->data = *data;
1948 priv_sl2->pdev = pdev;
1949 priv_sl2->ndev = ndev;
1950 priv_sl2->dev = &ndev->dev;
1951 priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1952 priv_sl2->rx_packet_max = max(rx_packet_max, 128);
1953
1954 if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
1955 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
1956 ETH_ALEN);
1957 pr_info("cpsw: Detected MACID = %pM\n", priv_sl2->mac_addr);
1958 } else {
1959 random_ether_addr(priv_sl2->mac_addr);
1960 pr_info("cpsw: Random MACID = %pM\n", priv_sl2->mac_addr);
1961 }
1962 memcpy(ndev->dev_addr, priv_sl2->mac_addr, ETH_ALEN);
1963
1964 priv_sl2->slaves = priv->slaves;
1965 priv_sl2->clk = priv->clk;
1966
1967 priv_sl2->coal_intvl = 0;
1968 priv_sl2->bus_freq_mhz = priv->bus_freq_mhz;
1969
1970 priv_sl2->regs = priv->regs;
1971 priv_sl2->host_port = priv->host_port;
1972 priv_sl2->host_port_regs = priv->host_port_regs;
1973 priv_sl2->wr_regs = priv->wr_regs;
1974 priv_sl2->hw_stats = priv->hw_stats;
1975 priv_sl2->dma = priv->dma;
1976 priv_sl2->txch = priv->txch;
1977 priv_sl2->rxch = priv->rxch;
1978 priv_sl2->ale = priv->ale;
1979 priv_sl2->emac_port = 1;
1980 priv->slaves[1].ndev = ndev;
1981 priv_sl2->cpts = priv->cpts;
1982 priv_sl2->version = priv->version;
1983
1984 for (i = 0; i < priv->num_irqs; i++) {
1985 priv_sl2->irqs_table[i] = priv->irqs_table[i];
1986 priv_sl2->num_irqs = priv->num_irqs;
1987 }
1988 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1989
1990 ndev->netdev_ops = &cpsw_netdev_ops;
1991 SET_ETHTOOL_OPS(ndev, &cpsw_ethtool_ops);
1992 netif_napi_add(ndev, &priv_sl2->napi, cpsw_poll, CPSW_POLL_WEIGHT);
1993
1994 /* register the network device */
1995 SET_NETDEV_DEV(ndev, &pdev->dev);
1996 ret = register_netdev(ndev);
1997 if (ret) {
1998 pr_err("cpsw: error registering net device\n");
1999 free_netdev(ndev);
2000 ret = -ENODEV;
2001 }
2002
2003 return ret;
2004 }
2005
2006 static int cpsw_probe(struct platform_device *pdev)
2007 {
2008 struct cpsw_platform_data *data;
2009 struct net_device *ndev;
2010 struct cpsw_priv *priv;
2011 struct cpdma_params dma_params;
2012 struct cpsw_ale_params ale_params;
2013 void __iomem *ss_regs;
2014 struct resource *res, *ss_res;
2015 u32 slave_offset, sliver_offset, slave_size;
2016 int ret = 0, i, k = 0;
2017
2018 ndev = alloc_etherdev(sizeof(struct cpsw_priv));
2019 if (!ndev) {
2020 pr_err("error allocating net_device\n");
2021 return -ENOMEM;
2022 }
2023
2024 platform_set_drvdata(pdev, ndev);
2025 priv = netdev_priv(ndev);
2026 spin_lock_init(&priv->lock);
2027 priv->pdev = pdev;
2028 priv->ndev = ndev;
2029 priv->dev = &ndev->dev;
2030 priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
2031 priv->rx_packet_max = max(rx_packet_max, 128);
2032 priv->cpts = devm_kzalloc(&pdev->dev, sizeof(struct cpts), GFP_KERNEL);
2033 priv->irq_enabled = true;
2034 if (!priv->cpts) {
2035 pr_err("error allocating cpts\n");
2036 goto clean_ndev_ret;
2037 }
2038
2039 /*
2040 * This may be required here for child devices.
2041 */
2042 pm_runtime_enable(&pdev->dev);
2043
2044 /* Select default pin state */
2045 pinctrl_pm_select_default_state(&pdev->dev);
2046
2047 if (cpsw_probe_dt(&priv->data, pdev)) {
2048 pr_err("cpsw: platform data missing\n");
2049 ret = -ENODEV;
2050 goto clean_runtime_disable_ret;
2051 }
2052 data = &priv->data;
2053
2054 if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
2055 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
2056 pr_info("Detected MACID = %pM\n", priv->mac_addr);
2057 } else {
2058 eth_random_addr(priv->mac_addr);
2059 pr_info("Random MACID = %pM\n", priv->mac_addr);
2060 }
2061
2062 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
2063
2064 priv->slaves = devm_kzalloc(&pdev->dev,
2065 sizeof(struct cpsw_slave) * data->slaves,
2066 GFP_KERNEL);
2067 if (!priv->slaves) {
2068 ret = -ENOMEM;
2069 goto clean_runtime_disable_ret;
2070 }
2071 for (i = 0; i < data->slaves; i++)
2072 priv->slaves[i].slave_num = i;
2073
2074 priv->slaves[0].ndev = ndev;
2075 priv->emac_port = 0;
2076
2077 priv->clk = devm_clk_get(&pdev->dev, "fck");
2078 if (IS_ERR(priv->clk)) {
2079 dev_err(priv->dev, "fck is not found\n");
2080 ret = -ENODEV;
2081 goto clean_runtime_disable_ret;
2082 }
2083 priv->coal_intvl = 0;
2084 priv->bus_freq_mhz = clk_get_rate(priv->clk) / 1000000;
2085
2086 ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2087 ss_regs = devm_ioremap_resource(&pdev->dev, ss_res);
2088 if (IS_ERR(ss_regs)) {
2089 ret = PTR_ERR(ss_regs);
2090 goto clean_runtime_disable_ret;
2091 }
2092 priv->regs = ss_regs;
2093 priv->host_port = HOST_PORT_NUM;
2094
2095 /* Need to enable clocks with runtime PM api to access module
2096 * registers
2097 */
2098 pm_runtime_get_sync(&pdev->dev);
2099 priv->version = readl(&priv->regs->id_ver);
2100 pm_runtime_put_sync(&pdev->dev);
2101
2102 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2103 priv->wr_regs = devm_ioremap_resource(&pdev->dev, res);
2104 if (IS_ERR(priv->wr_regs)) {
2105 ret = PTR_ERR(priv->wr_regs);
2106 goto clean_runtime_disable_ret;
2107 }
2108
2109 memset(&dma_params, 0, sizeof(dma_params));
2110 memset(&ale_params, 0, sizeof(ale_params));
2111
2112 switch (priv->version) {
2113 case CPSW_VERSION_1:
2114 priv->host_port_regs = ss_regs + CPSW1_HOST_PORT_OFFSET;
2115 priv->cpts->reg = ss_regs + CPSW1_CPTS_OFFSET;
2116 priv->hw_stats = ss_regs + CPSW1_HW_STATS;
2117 dma_params.dmaregs = ss_regs + CPSW1_CPDMA_OFFSET;
2118 dma_params.txhdp = ss_regs + CPSW1_STATERAM_OFFSET;
2119 ale_params.ale_regs = ss_regs + CPSW1_ALE_OFFSET;
2120 slave_offset = CPSW1_SLAVE_OFFSET;
2121 slave_size = CPSW1_SLAVE_SIZE;
2122 sliver_offset = CPSW1_SLIVER_OFFSET;
2123 dma_params.desc_mem_phys = 0;
2124 break;
2125 case CPSW_VERSION_2:
2126 case CPSW_VERSION_3:
2127 case CPSW_VERSION_4:
2128 priv->host_port_regs = ss_regs + CPSW2_HOST_PORT_OFFSET;
2129 priv->cpts->reg = ss_regs + CPSW2_CPTS_OFFSET;
2130 priv->hw_stats = ss_regs + CPSW2_HW_STATS;
2131 dma_params.dmaregs = ss_regs + CPSW2_CPDMA_OFFSET;
2132 dma_params.txhdp = ss_regs + CPSW2_STATERAM_OFFSET;
2133 ale_params.ale_regs = ss_regs + CPSW2_ALE_OFFSET;
2134 slave_offset = CPSW2_SLAVE_OFFSET;
2135 slave_size = CPSW2_SLAVE_SIZE;
2136 sliver_offset = CPSW2_SLIVER_OFFSET;
2137 dma_params.desc_mem_phys =
2138 (u32 __force) ss_res->start + CPSW2_BD_OFFSET;
2139 break;
2140 default:
2141 dev_err(priv->dev, "unknown version 0x%08x\n", priv->version);
2142 ret = -ENODEV;
2143 goto clean_runtime_disable_ret;
2144 }
2145 for (i = 0; i < priv->data.slaves; i++) {
2146 struct cpsw_slave *slave = &priv->slaves[i];
2147 cpsw_slave_init(slave, priv, slave_offset, sliver_offset);
2148 slave_offset += slave_size;
2149 sliver_offset += SLIVER_SIZE;
2150 }
2151
2152 dma_params.dev = &pdev->dev;
2153 dma_params.rxthresh = dma_params.dmaregs + CPDMA_RXTHRESH;
2154 dma_params.rxfree = dma_params.dmaregs + CPDMA_RXFREE;
2155 dma_params.rxhdp = dma_params.txhdp + CPDMA_RXHDP;
2156 dma_params.txcp = dma_params.txhdp + CPDMA_TXCP;
2157 dma_params.rxcp = dma_params.txhdp + CPDMA_RXCP;
2158
2159 dma_params.num_chan = data->channels;
2160 dma_params.has_soft_reset = true;
2161 dma_params.min_packet_size = CPSW_MIN_PACKET_SIZE;
2162 dma_params.desc_mem_size = data->bd_ram_size;
2163 dma_params.desc_align = 16;
2164 dma_params.has_ext_regs = true;
2165 dma_params.desc_hw_addr = dma_params.desc_mem_phys;
2166
2167 priv->dma = cpdma_ctlr_create(&dma_params);
2168 if (!priv->dma) {
2169 dev_err(priv->dev, "error initializing dma\n");
2170 ret = -ENOMEM;
2171 goto clean_runtime_disable_ret;
2172 }
2173
2174 priv->txch = cpdma_chan_create(priv->dma, tx_chan_num(0),
2175 cpsw_tx_handler);
2176 priv->rxch = cpdma_chan_create(priv->dma, rx_chan_num(0),
2177 cpsw_rx_handler);
2178
2179 if (WARN_ON(!priv->txch || !priv->rxch)) {
2180 dev_err(priv->dev, "error initializing dma channels\n");
2181 ret = -ENOMEM;
2182 goto clean_dma_ret;
2183 }
2184
2185 ale_params.dev = &ndev->dev;
2186 ale_params.ale_ageout = ale_ageout;
2187 ale_params.ale_entries = data->ale_entries;
2188 ale_params.ale_ports = data->slaves;
2189
2190 priv->ale = cpsw_ale_create(&ale_params);
2191 if (!priv->ale) {
2192 dev_err(priv->dev, "error initializing ale engine\n");
2193 ret = -ENODEV;
2194 goto clean_dma_ret;
2195 }
2196
2197 ndev->irq = platform_get_irq(pdev, 0);
2198 if (ndev->irq < 0) {
2199 dev_err(priv->dev, "error getting irq resource\n");
2200 ret = -ENOENT;
2201 goto clean_ale_ret;
2202 }
2203
2204 while ((res = platform_get_resource(priv->pdev, IORESOURCE_IRQ, k))) {
2205 for (i = res->start; i <= res->end; i++) {
2206 if (devm_request_irq(&pdev->dev, i, cpsw_interrupt, 0,
2207 dev_name(&pdev->dev), priv)) {
2208 dev_err(priv->dev, "error attaching irq\n");
2209 goto clean_ale_ret;
2210 }
2211 priv->irqs_table[k] = i;
2212 priv->num_irqs = k + 1;
2213 }
2214 k++;
2215 }
2216
2217 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2218
2219 ndev->netdev_ops = &cpsw_netdev_ops;
2220 SET_ETHTOOL_OPS(ndev, &cpsw_ethtool_ops);
2221 netif_napi_add(ndev, &priv->napi, cpsw_poll, CPSW_POLL_WEIGHT);
2222
2223 /* register the network device */
2224 SET_NETDEV_DEV(ndev, &pdev->dev);
2225 ret = register_netdev(ndev);
2226 if (ret) {
2227 dev_err(priv->dev, "error registering net device\n");
2228 ret = -ENODEV;
2229 goto clean_ale_ret;
2230 }
2231
2232 cpsw_notice(priv, probe, "initialized device (regs %pa, irq %d)\n",
2233 &ss_res->start, ndev->irq);
2234
2235 if (priv->data.dual_emac) {
2236 ret = cpsw_probe_dual_emac(pdev, priv);
2237 if (ret) {
2238 cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
2239 goto clean_ale_ret;
2240 }
2241 }
2242
2243 return 0;
2244
2245 clean_ale_ret:
2246 cpsw_ale_destroy(priv->ale);
2247 clean_dma_ret:
2248 cpdma_chan_destroy(priv->txch);
2249 cpdma_chan_destroy(priv->rxch);
2250 cpdma_ctlr_destroy(priv->dma);
2251 clean_runtime_disable_ret:
2252 pm_runtime_disable(&pdev->dev);
2253 clean_ndev_ret:
2254 free_netdev(priv->ndev);
2255 return ret;
2256 }
2257
2258 static int cpsw_remove(struct platform_device *pdev)
2259 {
2260 struct net_device *ndev = platform_get_drvdata(pdev);
2261 struct cpsw_priv *priv = netdev_priv(ndev);
2262
2263 if (priv->data.dual_emac)
2264 unregister_netdev(cpsw_get_slave_ndev(priv, 1));
2265 unregister_netdev(ndev);
2266
2267 cpsw_ale_destroy(priv->ale);
2268 cpdma_chan_destroy(priv->txch);
2269 cpdma_chan_destroy(priv->rxch);
2270 cpdma_ctlr_destroy(priv->dma);
2271 pm_runtime_disable(&pdev->dev);
2272 if (priv->data.dual_emac)
2273 free_netdev(cpsw_get_slave_ndev(priv, 1));
2274 free_netdev(ndev);
2275 return 0;
2276 }
2277
2278 static int cpsw_suspend(struct device *dev)
2279 {
2280 struct platform_device *pdev = to_platform_device(dev);
2281 struct net_device *ndev = platform_get_drvdata(pdev);
2282 struct cpsw_priv *priv = netdev_priv(ndev);
2283
2284 if (netif_running(ndev))
2285 cpsw_ndo_stop(ndev);
2286
2287 for_each_slave(priv, soft_reset_slave);
2288
2289 pm_runtime_put_sync(&pdev->dev);
2290
2291 /* Select sleep pin state */
2292 pinctrl_pm_select_sleep_state(&pdev->dev);
2293
2294 return 0;
2295 }
2296
2297 static int cpsw_resume(struct device *dev)
2298 {
2299 struct platform_device *pdev = to_platform_device(dev);
2300 struct net_device *ndev = platform_get_drvdata(pdev);
2301
2302 pm_runtime_get_sync(&pdev->dev);
2303
2304 /* Select default pin state */
2305 pinctrl_pm_select_default_state(&pdev->dev);
2306
2307 if (netif_running(ndev))
2308 cpsw_ndo_open(ndev);
2309 return 0;
2310 }
2311
2312 static const struct dev_pm_ops cpsw_pm_ops = {
2313 .suspend = cpsw_suspend,
2314 .resume = cpsw_resume,
2315 };
2316
2317 static const struct of_device_id cpsw_of_mtable[] = {
2318 { .compatible = "ti,cpsw", },
2319 { /* sentinel */ },
2320 };
2321 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
2322
2323 static struct platform_driver cpsw_driver = {
2324 .driver = {
2325 .name = "cpsw",
2326 .owner = THIS_MODULE,
2327 .pm = &cpsw_pm_ops,
2328 .of_match_table = cpsw_of_mtable,
2329 },
2330 .probe = cpsw_probe,
2331 .remove = cpsw_remove,
2332 };
2333
2334 static int __init cpsw_init(void)
2335 {
2336 return platform_driver_register(&cpsw_driver);
2337 }
2338 late_initcall(cpsw_init);
2339
2340 static void __exit cpsw_exit(void)
2341 {
2342 platform_driver_unregister(&cpsw_driver);
2343 }
2344 module_exit(cpsw_exit);
2345
2346 MODULE_LICENSE("GPL");
2347 MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
2348 MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
2349 MODULE_DESCRIPTION("TI CPSW Ethernet driver");
Linux kernel - Deliverables
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