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MAINTAINERS: Add phy-miphy28lp.c and phy-miphy365x.c to ARCH/STI architecture
[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 << 16)
131 #define CPSW_FIFO_DUAL_MAC_MODE (1 << 16)
132 #define CPSW_FIFO_RATE_LIMIT_MODE (2 << 16)
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_TTL_NONZERO (1<<8) /* Time Sync Time To Live Non-zero enable */
252 #define TS_ANNEX_F_EN (1<<6) /* Time Sync Annex F enable */
253 #define TS_ANNEX_D_EN (1<<4) /* Time Sync Annex D enable */
254 #define TS_LTYPE2_EN (1<<3) /* Time Sync LTYPE 2 enable */
255 #define TS_LTYPE1_EN (1<<2) /* Time Sync LTYPE 1 enable */
256 #define TS_TX_EN (1<<1) /* Time Sync Transmit Enable */
257 #define TS_RX_EN (1<<0) /* Time Sync Receive Enable */
258
259 #define CTRL_V2_TS_BITS \
260 (TS_320 | TS_319 | TS_132 | TS_131 | TS_130 | TS_129 |\
261 TS_TTL_NONZERO | TS_ANNEX_D_EN | TS_LTYPE1_EN)
262
263 #define CTRL_V2_ALL_TS_MASK (CTRL_V2_TS_BITS | TS_TX_EN | TS_RX_EN)
264 #define CTRL_V2_TX_TS_BITS (CTRL_V2_TS_BITS | TS_TX_EN)
265 #define CTRL_V2_RX_TS_BITS (CTRL_V2_TS_BITS | TS_RX_EN)
266
267
268 #define CTRL_V3_TS_BITS \
269 (TS_320 | TS_319 | TS_132 | TS_131 | TS_130 | TS_129 |\
270 TS_TTL_NONZERO | TS_ANNEX_F_EN | TS_ANNEX_D_EN |\
271 TS_LTYPE1_EN)
272
273 #define CTRL_V3_ALL_TS_MASK (CTRL_V3_TS_BITS | TS_TX_EN | TS_RX_EN)
274 #define CTRL_V3_TX_TS_BITS (CTRL_V3_TS_BITS | TS_TX_EN)
275 #define CTRL_V3_RX_TS_BITS (CTRL_V3_TS_BITS | TS_RX_EN)
276
277 /* Bit definitions for the CPSW2_TS_SEQ_MTYPE register */
278 #define TS_SEQ_ID_OFFSET_SHIFT (16) /* Time Sync Sequence ID Offset */
279 #define TS_SEQ_ID_OFFSET_MASK (0x3f)
280 #define TS_MSG_TYPE_EN_SHIFT (0) /* Time Sync Message Type Enable */
281 #define TS_MSG_TYPE_EN_MASK (0xffff)
282
283 /* The PTP event messages - Sync, Delay_Req, Pdelay_Req, and Pdelay_Resp. */
284 #define EVENT_MSG_BITS ((1<<0) | (1<<1) | (1<<2) | (1<<3))
285
286 /* Bit definitions for the CPSW1_TS_CTL register */
287 #define CPSW_V1_TS_RX_EN BIT(0)
288 #define CPSW_V1_TS_TX_EN BIT(4)
289 #define CPSW_V1_MSG_TYPE_OFS 16
290
291 /* Bit definitions for the CPSW1_TS_SEQ_LTYPE register */
292 #define CPSW_V1_SEQ_ID_OFS_SHIFT 16
293
294 struct cpsw_host_regs {
295 u32 max_blks;
296 u32 blk_cnt;
297 u32 tx_in_ctl;
298 u32 port_vlan;
299 u32 tx_pri_map;
300 u32 cpdma_tx_pri_map;
301 u32 cpdma_rx_chan_map;
302 };
303
304 struct cpsw_sliver_regs {
305 u32 id_ver;
306 u32 mac_control;
307 u32 mac_status;
308 u32 soft_reset;
309 u32 rx_maxlen;
310 u32 __reserved_0;
311 u32 rx_pause;
312 u32 tx_pause;
313 u32 __reserved_1;
314 u32 rx_pri_map;
315 };
316
317 struct cpsw_hw_stats {
318 u32 rxgoodframes;
319 u32 rxbroadcastframes;
320 u32 rxmulticastframes;
321 u32 rxpauseframes;
322 u32 rxcrcerrors;
323 u32 rxaligncodeerrors;
324 u32 rxoversizedframes;
325 u32 rxjabberframes;
326 u32 rxundersizedframes;
327 u32 rxfragments;
328 u32 __pad_0[2];
329 u32 rxoctets;
330 u32 txgoodframes;
331 u32 txbroadcastframes;
332 u32 txmulticastframes;
333 u32 txpauseframes;
334 u32 txdeferredframes;
335 u32 txcollisionframes;
336 u32 txsinglecollframes;
337 u32 txmultcollframes;
338 u32 txexcessivecollisions;
339 u32 txlatecollisions;
340 u32 txunderrun;
341 u32 txcarriersenseerrors;
342 u32 txoctets;
343 u32 octetframes64;
344 u32 octetframes65t127;
345 u32 octetframes128t255;
346 u32 octetframes256t511;
347 u32 octetframes512t1023;
348 u32 octetframes1024tup;
349 u32 netoctets;
350 u32 rxsofoverruns;
351 u32 rxmofoverruns;
352 u32 rxdmaoverruns;
353 };
354
355 struct cpsw_slave {
356 void __iomem *regs;
357 struct cpsw_sliver_regs __iomem *sliver;
358 int slave_num;
359 u32 mac_control;
360 struct cpsw_slave_data *data;
361 struct phy_device *phy;
362 struct net_device *ndev;
363 u32 port_vlan;
364 u32 open_stat;
365 };
366
367 static inline u32 slave_read(struct cpsw_slave *slave, u32 offset)
368 {
369 return __raw_readl(slave->regs + offset);
370 }
371
372 static inline void slave_write(struct cpsw_slave *slave, u32 val, u32 offset)
373 {
374 __raw_writel(val, slave->regs + offset);
375 }
376
377 struct cpsw_priv {
378 spinlock_t lock;
379 struct platform_device *pdev;
380 struct net_device *ndev;
381 struct napi_struct napi;
382 struct device *dev;
383 struct cpsw_platform_data data;
384 struct cpsw_ss_regs __iomem *regs;
385 struct cpsw_wr_regs __iomem *wr_regs;
386 u8 __iomem *hw_stats;
387 struct cpsw_host_regs __iomem *host_port_regs;
388 u32 msg_enable;
389 u32 version;
390 u32 coal_intvl;
391 u32 bus_freq_mhz;
392 int rx_packet_max;
393 int host_port;
394 struct clk *clk;
395 u8 mac_addr[ETH_ALEN];
396 struct cpsw_slave *slaves;
397 struct cpdma_ctlr *dma;
398 struct cpdma_chan *txch, *rxch;
399 struct cpsw_ale *ale;
400 bool rx_pause;
401 bool tx_pause;
402 /* snapshot of IRQ numbers */
403 u32 irqs_table[4];
404 u32 num_irqs;
405 bool irq_enabled;
406 struct cpts *cpts;
407 u32 emac_port;
408 };
409
410 struct cpsw_stats {
411 char stat_string[ETH_GSTRING_LEN];
412 int type;
413 int sizeof_stat;
414 int stat_offset;
415 };
416
417 enum {
418 CPSW_STATS,
419 CPDMA_RX_STATS,
420 CPDMA_TX_STATS,
421 };
422
423 #define CPSW_STAT(m) CPSW_STATS, \
424 sizeof(((struct cpsw_hw_stats *)0)->m), \
425 offsetof(struct cpsw_hw_stats, m)
426 #define CPDMA_RX_STAT(m) CPDMA_RX_STATS, \
427 sizeof(((struct cpdma_chan_stats *)0)->m), \
428 offsetof(struct cpdma_chan_stats, m)
429 #define CPDMA_TX_STAT(m) CPDMA_TX_STATS, \
430 sizeof(((struct cpdma_chan_stats *)0)->m), \
431 offsetof(struct cpdma_chan_stats, m)
432
433 static const struct cpsw_stats cpsw_gstrings_stats[] = {
434 { "Good Rx Frames", CPSW_STAT(rxgoodframes) },
435 { "Broadcast Rx Frames", CPSW_STAT(rxbroadcastframes) },
436 { "Multicast Rx Frames", CPSW_STAT(rxmulticastframes) },
437 { "Pause Rx Frames", CPSW_STAT(rxpauseframes) },
438 { "Rx CRC Errors", CPSW_STAT(rxcrcerrors) },
439 { "Rx Align/Code Errors", CPSW_STAT(rxaligncodeerrors) },
440 { "Oversize Rx Frames", CPSW_STAT(rxoversizedframes) },
441 { "Rx Jabbers", CPSW_STAT(rxjabberframes) },
442 { "Undersize (Short) Rx Frames", CPSW_STAT(rxundersizedframes) },
443 { "Rx Fragments", CPSW_STAT(rxfragments) },
444 { "Rx Octets", CPSW_STAT(rxoctets) },
445 { "Good Tx Frames", CPSW_STAT(txgoodframes) },
446 { "Broadcast Tx Frames", CPSW_STAT(txbroadcastframes) },
447 { "Multicast Tx Frames", CPSW_STAT(txmulticastframes) },
448 { "Pause Tx Frames", CPSW_STAT(txpauseframes) },
449 { "Deferred Tx Frames", CPSW_STAT(txdeferredframes) },
450 { "Collisions", CPSW_STAT(txcollisionframes) },
451 { "Single Collision Tx Frames", CPSW_STAT(txsinglecollframes) },
452 { "Multiple Collision Tx Frames", CPSW_STAT(txmultcollframes) },
453 { "Excessive Collisions", CPSW_STAT(txexcessivecollisions) },
454 { "Late Collisions", CPSW_STAT(txlatecollisions) },
455 { "Tx Underrun", CPSW_STAT(txunderrun) },
456 { "Carrier Sense Errors", CPSW_STAT(txcarriersenseerrors) },
457 { "Tx Octets", CPSW_STAT(txoctets) },
458 { "Rx + Tx 64 Octet Frames", CPSW_STAT(octetframes64) },
459 { "Rx + Tx 65-127 Octet Frames", CPSW_STAT(octetframes65t127) },
460 { "Rx + Tx 128-255 Octet Frames", CPSW_STAT(octetframes128t255) },
461 { "Rx + Tx 256-511 Octet Frames", CPSW_STAT(octetframes256t511) },
462 { "Rx + Tx 512-1023 Octet Frames", CPSW_STAT(octetframes512t1023) },
463 { "Rx + Tx 1024-Up Octet Frames", CPSW_STAT(octetframes1024tup) },
464 { "Net Octets", CPSW_STAT(netoctets) },
465 { "Rx Start of Frame Overruns", CPSW_STAT(rxsofoverruns) },
466 { "Rx Middle of Frame Overruns", CPSW_STAT(rxmofoverruns) },
467 { "Rx DMA Overruns", CPSW_STAT(rxdmaoverruns) },
468 { "Rx DMA chan: head_enqueue", CPDMA_RX_STAT(head_enqueue) },
469 { "Rx DMA chan: tail_enqueue", CPDMA_RX_STAT(tail_enqueue) },
470 { "Rx DMA chan: pad_enqueue", CPDMA_RX_STAT(pad_enqueue) },
471 { "Rx DMA chan: misqueued", CPDMA_RX_STAT(misqueued) },
472 { "Rx DMA chan: desc_alloc_fail", CPDMA_RX_STAT(desc_alloc_fail) },
473 { "Rx DMA chan: pad_alloc_fail", CPDMA_RX_STAT(pad_alloc_fail) },
474 { "Rx DMA chan: runt_receive_buf", CPDMA_RX_STAT(runt_receive_buff) },
475 { "Rx DMA chan: runt_transmit_buf", CPDMA_RX_STAT(runt_transmit_buff) },
476 { "Rx DMA chan: empty_dequeue", CPDMA_RX_STAT(empty_dequeue) },
477 { "Rx DMA chan: busy_dequeue", CPDMA_RX_STAT(busy_dequeue) },
478 { "Rx DMA chan: good_dequeue", CPDMA_RX_STAT(good_dequeue) },
479 { "Rx DMA chan: requeue", CPDMA_RX_STAT(requeue) },
480 { "Rx DMA chan: teardown_dequeue", CPDMA_RX_STAT(teardown_dequeue) },
481 { "Tx DMA chan: head_enqueue", CPDMA_TX_STAT(head_enqueue) },
482 { "Tx DMA chan: tail_enqueue", CPDMA_TX_STAT(tail_enqueue) },
483 { "Tx DMA chan: pad_enqueue", CPDMA_TX_STAT(pad_enqueue) },
484 { "Tx DMA chan: misqueued", CPDMA_TX_STAT(misqueued) },
485 { "Tx DMA chan: desc_alloc_fail", CPDMA_TX_STAT(desc_alloc_fail) },
486 { "Tx DMA chan: pad_alloc_fail", CPDMA_TX_STAT(pad_alloc_fail) },
487 { "Tx DMA chan: runt_receive_buf", CPDMA_TX_STAT(runt_receive_buff) },
488 { "Tx DMA chan: runt_transmit_buf", CPDMA_TX_STAT(runt_transmit_buff) },
489 { "Tx DMA chan: empty_dequeue", CPDMA_TX_STAT(empty_dequeue) },
490 { "Tx DMA chan: busy_dequeue", CPDMA_TX_STAT(busy_dequeue) },
491 { "Tx DMA chan: good_dequeue", CPDMA_TX_STAT(good_dequeue) },
492 { "Tx DMA chan: requeue", CPDMA_TX_STAT(requeue) },
493 { "Tx DMA chan: teardown_dequeue", CPDMA_TX_STAT(teardown_dequeue) },
494 };
495
496 #define CPSW_STATS_LEN ARRAY_SIZE(cpsw_gstrings_stats)
497
498 #define napi_to_priv(napi) container_of(napi, struct cpsw_priv, napi)
499 #define for_each_slave(priv, func, arg...) \
500 do { \
501 struct cpsw_slave *slave; \
502 int n; \
503 if (priv->data.dual_emac) \
504 (func)((priv)->slaves + priv->emac_port, ##arg);\
505 else \
506 for (n = (priv)->data.slaves, \
507 slave = (priv)->slaves; \
508 n; n--) \
509 (func)(slave++, ##arg); \
510 } while (0)
511 #define cpsw_get_slave_ndev(priv, __slave_no__) \
512 (priv->slaves[__slave_no__].ndev)
513 #define cpsw_get_slave_priv(priv, __slave_no__) \
514 ((priv->slaves[__slave_no__].ndev) ? \
515 netdev_priv(priv->slaves[__slave_no__].ndev) : NULL) \
516
517 #define cpsw_dual_emac_src_port_detect(status, priv, ndev, skb) \
518 do { \
519 if (!priv->data.dual_emac) \
520 break; \
521 if (CPDMA_RX_SOURCE_PORT(status) == 1) { \
522 ndev = cpsw_get_slave_ndev(priv, 0); \
523 priv = netdev_priv(ndev); \
524 skb->dev = ndev; \
525 } else if (CPDMA_RX_SOURCE_PORT(status) == 2) { \
526 ndev = cpsw_get_slave_ndev(priv, 1); \
527 priv = netdev_priv(ndev); \
528 skb->dev = ndev; \
529 } \
530 } while (0)
531 #define cpsw_add_mcast(priv, addr) \
532 do { \
533 if (priv->data.dual_emac) { \
534 struct cpsw_slave *slave = priv->slaves + \
535 priv->emac_port; \
536 int slave_port = cpsw_get_slave_port(priv, \
537 slave->slave_num); \
538 cpsw_ale_add_mcast(priv->ale, addr, \
539 1 << slave_port | 1 << priv->host_port, \
540 ALE_VLAN, slave->port_vlan, 0); \
541 } else { \
542 cpsw_ale_add_mcast(priv->ale, addr, \
543 ALE_ALL_PORTS << priv->host_port, \
544 0, 0, 0); \
545 } \
546 } while (0)
547
548 static inline int cpsw_get_slave_port(struct cpsw_priv *priv, u32 slave_num)
549 {
550 if (priv->host_port == 0)
551 return slave_num + 1;
552 else
553 return slave_num;
554 }
555
556 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
557 {
558 struct cpsw_priv *priv = netdev_priv(ndev);
559 struct cpsw_ale *ale = priv->ale;
560 int i;
561
562 if (priv->data.dual_emac) {
563 bool flag = false;
564
565 /* Enabling promiscuous mode for one interface will be
566 * common for both the interface as the interface shares
567 * the same hardware resource.
568 */
569 for (i = 0; i < priv->data.slaves; i++)
570 if (priv->slaves[i].ndev->flags & IFF_PROMISC)
571 flag = true;
572
573 if (!enable && flag) {
574 enable = true;
575 dev_err(&ndev->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
576 }
577
578 if (enable) {
579 /* Enable Bypass */
580 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 1);
581
582 dev_dbg(&ndev->dev, "promiscuity enabled\n");
583 } else {
584 /* Disable Bypass */
585 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 0);
586 dev_dbg(&ndev->dev, "promiscuity disabled\n");
587 }
588 } else {
589 if (enable) {
590 unsigned long timeout = jiffies + HZ;
591
592 /* Disable Learn for all ports (host is port 0 and slaves are port 1 and up */
593 for (i = 0; i <= priv->data.slaves; i++) {
594 cpsw_ale_control_set(ale, i,
595 ALE_PORT_NOLEARN, 1);
596 cpsw_ale_control_set(ale, i,
597 ALE_PORT_NO_SA_UPDATE, 1);
598 }
599
600 /* Clear All Untouched entries */
601 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
602 do {
603 cpu_relax();
604 if (cpsw_ale_control_get(ale, 0, ALE_AGEOUT))
605 break;
606 } while (time_after(timeout, jiffies));
607 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
608
609 /* Clear all mcast from ALE */
610 cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS <<
611 priv->host_port, -1);
612
613 /* Flood All Unicast Packets to Host port */
614 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1);
615 dev_dbg(&ndev->dev, "promiscuity enabled\n");
616 } else {
617 /* Don't Flood All Unicast Packets to Host port */
618 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);
619
620 /* Enable Learn for all ports (host is port 0 and slaves are port 1 and up */
621 for (i = 0; i <= priv->data.slaves; i++) {
622 cpsw_ale_control_set(ale, i,
623 ALE_PORT_NOLEARN, 0);
624 cpsw_ale_control_set(ale, i,
625 ALE_PORT_NO_SA_UPDATE, 0);
626 }
627 dev_dbg(&ndev->dev, "promiscuity disabled\n");
628 }
629 }
630 }
631
632 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
633 {
634 struct cpsw_priv *priv = netdev_priv(ndev);
635 int vid;
636
637 if (priv->data.dual_emac)
638 vid = priv->slaves[priv->emac_port].port_vlan;
639 else
640 vid = priv->data.default_vlan;
641
642 if (ndev->flags & IFF_PROMISC) {
643 /* Enable promiscuous mode */
644 cpsw_set_promiscious(ndev, true);
645 cpsw_ale_set_allmulti(priv->ale, IFF_ALLMULTI);
646 return;
647 } else {
648 /* Disable promiscuous mode */
649 cpsw_set_promiscious(ndev, false);
650 }
651
652 /* Restore allmulti on vlans if necessary */
653 cpsw_ale_set_allmulti(priv->ale, priv->ndev->flags & IFF_ALLMULTI);
654
655 /* Clear all mcast from ALE */
656 cpsw_ale_flush_multicast(priv->ale, ALE_ALL_PORTS << priv->host_port,
657 vid);
658
659 if (!netdev_mc_empty(ndev)) {
660 struct netdev_hw_addr *ha;
661
662 /* program multicast address list into ALE register */
663 netdev_for_each_mc_addr(ha, ndev) {
664 cpsw_add_mcast(priv, (u8 *)ha->addr);
665 }
666 }
667 }
668
669 static void cpsw_intr_enable(struct cpsw_priv *priv)
670 {
671 __raw_writel(0xFF, &priv->wr_regs->tx_en);
672 __raw_writel(0xFF, &priv->wr_regs->rx_en);
673
674 cpdma_ctlr_int_ctrl(priv->dma, true);
675 return;
676 }
677
678 static void cpsw_intr_disable(struct cpsw_priv *priv)
679 {
680 __raw_writel(0, &priv->wr_regs->tx_en);
681 __raw_writel(0, &priv->wr_regs->rx_en);
682
683 cpdma_ctlr_int_ctrl(priv->dma, false);
684 return;
685 }
686
687 static void cpsw_tx_handler(void *token, int len, int status)
688 {
689 struct sk_buff *skb = token;
690 struct net_device *ndev = skb->dev;
691 struct cpsw_priv *priv = netdev_priv(ndev);
692
693 /* Check whether the queue is stopped due to stalled tx dma, if the
694 * queue is stopped then start the queue as we have free desc for tx
695 */
696 if (unlikely(netif_queue_stopped(ndev)))
697 netif_wake_queue(ndev);
698 cpts_tx_timestamp(priv->cpts, skb);
699 ndev->stats.tx_packets++;
700 ndev->stats.tx_bytes += len;
701 dev_kfree_skb_any(skb);
702 }
703
704 static void cpsw_rx_handler(void *token, int len, int status)
705 {
706 struct sk_buff *skb = token;
707 struct sk_buff *new_skb;
708 struct net_device *ndev = skb->dev;
709 struct cpsw_priv *priv = netdev_priv(ndev);
710 int ret = 0;
711
712 cpsw_dual_emac_src_port_detect(status, priv, ndev, skb);
713
714 if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
715 bool ndev_status = false;
716 struct cpsw_slave *slave = priv->slaves;
717 int n;
718
719 if (priv->data.dual_emac) {
720 /* In dual emac mode check for all interfaces */
721 for (n = priv->data.slaves; n; n--, slave++)
722 if (netif_running(slave->ndev))
723 ndev_status = true;
724 }
725
726 if (ndev_status && (status >= 0)) {
727 /* The packet received is for the interface which
728 * is already down and the other interface is up
729 * and running, intead of freeing which results
730 * in reducing of the number of rx descriptor in
731 * DMA engine, requeue skb back to cpdma.
732 */
733 new_skb = skb;
734 goto requeue;
735 }
736
737 /* the interface is going down, skbs are purged */
738 dev_kfree_skb_any(skb);
739 return;
740 }
741
742 new_skb = netdev_alloc_skb_ip_align(ndev, priv->rx_packet_max);
743 if (new_skb) {
744 skb_put(skb, len);
745 cpts_rx_timestamp(priv->cpts, skb);
746 skb->protocol = eth_type_trans(skb, ndev);
747 netif_receive_skb(skb);
748 ndev->stats.rx_bytes += len;
749 ndev->stats.rx_packets++;
750 } else {
751 ndev->stats.rx_dropped++;
752 new_skb = skb;
753 }
754
755 requeue:
756 ret = cpdma_chan_submit(priv->rxch, new_skb, new_skb->data,
757 skb_tailroom(new_skb), 0);
758 if (WARN_ON(ret < 0))
759 dev_kfree_skb_any(new_skb);
760 }
761
762 static irqreturn_t cpsw_tx_interrupt(int irq, void *dev_id)
763 {
764 struct cpsw_priv *priv = dev_id;
765
766 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
767 cpdma_chan_process(priv->txch, 128);
768
769 priv = cpsw_get_slave_priv(priv, 1);
770 if (priv)
771 cpdma_chan_process(priv->txch, 128);
772
773 return IRQ_HANDLED;
774 }
775
776 static irqreturn_t cpsw_rx_interrupt(int irq, void *dev_id)
777 {
778 struct cpsw_priv *priv = dev_id;
779
780 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
781
782 cpsw_intr_disable(priv);
783 if (priv->irq_enabled == true) {
784 cpsw_disable_irq(priv);
785 priv->irq_enabled = false;
786 }
787
788 if (netif_running(priv->ndev)) {
789 napi_schedule(&priv->napi);
790 return IRQ_HANDLED;
791 }
792
793 priv = cpsw_get_slave_priv(priv, 1);
794 if (!priv)
795 return IRQ_NONE;
796
797 if (netif_running(priv->ndev)) {
798 napi_schedule(&priv->napi);
799 return IRQ_HANDLED;
800 }
801 return IRQ_NONE;
802 }
803
804 static int cpsw_poll(struct napi_struct *napi, int budget)
805 {
806 struct cpsw_priv *priv = napi_to_priv(napi);
807 int num_tx, num_rx;
808
809 num_tx = cpdma_chan_process(priv->txch, 128);
810
811 num_rx = cpdma_chan_process(priv->rxch, budget);
812 if (num_rx < budget) {
813 struct cpsw_priv *prim_cpsw;
814
815 napi_complete(napi);
816 cpsw_intr_enable(priv);
817 prim_cpsw = cpsw_get_slave_priv(priv, 0);
818 if (prim_cpsw->irq_enabled == false) {
819 prim_cpsw->irq_enabled = true;
820 cpsw_enable_irq(priv);
821 }
822 }
823
824 if (num_rx || num_tx)
825 cpsw_dbg(priv, intr, "poll %d rx, %d tx pkts\n",
826 num_rx, num_tx);
827
828 return num_rx;
829 }
830
831 static inline void soft_reset(const char *module, void __iomem *reg)
832 {
833 unsigned long timeout = jiffies + HZ;
834
835 __raw_writel(1, reg);
836 do {
837 cpu_relax();
838 } while ((__raw_readl(reg) & 1) && time_after(timeout, jiffies));
839
840 WARN(__raw_readl(reg) & 1, "failed to soft-reset %s\n", module);
841 }
842
843 #define mac_hi(mac) (((mac)[0] << 0) | ((mac)[1] << 8) | \
844 ((mac)[2] << 16) | ((mac)[3] << 24))
845 #define mac_lo(mac) (((mac)[4] << 0) | ((mac)[5] << 8))
846
847 static void cpsw_set_slave_mac(struct cpsw_slave *slave,
848 struct cpsw_priv *priv)
849 {
850 slave_write(slave, mac_hi(priv->mac_addr), SA_HI);
851 slave_write(slave, mac_lo(priv->mac_addr), SA_LO);
852 }
853
854 static void _cpsw_adjust_link(struct cpsw_slave *slave,
855 struct cpsw_priv *priv, bool *link)
856 {
857 struct phy_device *phy = slave->phy;
858 u32 mac_control = 0;
859 u32 slave_port;
860
861 if (!phy)
862 return;
863
864 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
865
866 if (phy->link) {
867 mac_control = priv->data.mac_control;
868
869 /* enable forwarding */
870 cpsw_ale_control_set(priv->ale, slave_port,
871 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
872
873 if (phy->speed == 1000)
874 mac_control |= BIT(7); /* GIGABITEN */
875 if (phy->duplex)
876 mac_control |= BIT(0); /* FULLDUPLEXEN */
877
878 /* set speed_in input in case RMII mode is used in 100Mbps */
879 if (phy->speed == 100)
880 mac_control |= BIT(15);
881 else if (phy->speed == 10)
882 mac_control |= BIT(18); /* In Band mode */
883
884 if (priv->rx_pause)
885 mac_control |= BIT(3);
886
887 if (priv->tx_pause)
888 mac_control |= BIT(4);
889
890 *link = true;
891 } else {
892 mac_control = 0;
893 /* disable forwarding */
894 cpsw_ale_control_set(priv->ale, slave_port,
895 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
896 }
897
898 if (mac_control != slave->mac_control) {
899 phy_print_status(phy);
900 __raw_writel(mac_control, &slave->sliver->mac_control);
901 }
902
903 slave->mac_control = mac_control;
904 }
905
906 static void cpsw_adjust_link(struct net_device *ndev)
907 {
908 struct cpsw_priv *priv = netdev_priv(ndev);
909 bool link = false;
910
911 for_each_slave(priv, _cpsw_adjust_link, priv, &link);
912
913 if (link) {
914 netif_carrier_on(ndev);
915 if (netif_running(ndev))
916 netif_wake_queue(ndev);
917 } else {
918 netif_carrier_off(ndev);
919 netif_stop_queue(ndev);
920 }
921 }
922
923 static int cpsw_get_coalesce(struct net_device *ndev,
924 struct ethtool_coalesce *coal)
925 {
926 struct cpsw_priv *priv = netdev_priv(ndev);
927
928 coal->rx_coalesce_usecs = priv->coal_intvl;
929 return 0;
930 }
931
932 static int cpsw_set_coalesce(struct net_device *ndev,
933 struct ethtool_coalesce *coal)
934 {
935 struct cpsw_priv *priv = netdev_priv(ndev);
936 u32 int_ctrl;
937 u32 num_interrupts = 0;
938 u32 prescale = 0;
939 u32 addnl_dvdr = 1;
940 u32 coal_intvl = 0;
941
942 coal_intvl = coal->rx_coalesce_usecs;
943
944 int_ctrl = readl(&priv->wr_regs->int_control);
945 prescale = priv->bus_freq_mhz * 4;
946
947 if (!coal->rx_coalesce_usecs) {
948 int_ctrl &= ~(CPSW_INTPRESCALE_MASK | CPSW_INTPACEEN);
949 goto update_return;
950 }
951
952 if (coal_intvl < CPSW_CMINTMIN_INTVL)
953 coal_intvl = CPSW_CMINTMIN_INTVL;
954
955 if (coal_intvl > CPSW_CMINTMAX_INTVL) {
956 /* Interrupt pacer works with 4us Pulse, we can
957 * throttle further by dilating the 4us pulse.
958 */
959 addnl_dvdr = CPSW_INTPRESCALE_MASK / prescale;
960
961 if (addnl_dvdr > 1) {
962 prescale *= addnl_dvdr;
963 if (coal_intvl > (CPSW_CMINTMAX_INTVL * addnl_dvdr))
964 coal_intvl = (CPSW_CMINTMAX_INTVL
965 * addnl_dvdr);
966 } else {
967 addnl_dvdr = 1;
968 coal_intvl = CPSW_CMINTMAX_INTVL;
969 }
970 }
971
972 num_interrupts = (1000 * addnl_dvdr) / coal_intvl;
973 writel(num_interrupts, &priv->wr_regs->rx_imax);
974 writel(num_interrupts, &priv->wr_regs->tx_imax);
975
976 int_ctrl |= CPSW_INTPACEEN;
977 int_ctrl &= (~CPSW_INTPRESCALE_MASK);
978 int_ctrl |= (prescale & CPSW_INTPRESCALE_MASK);
979
980 update_return:
981 writel(int_ctrl, &priv->wr_regs->int_control);
982
983 cpsw_notice(priv, timer, "Set coalesce to %d usecs.\n", coal_intvl);
984 if (priv->data.dual_emac) {
985 int i;
986
987 for (i = 0; i < priv->data.slaves; i++) {
988 priv = netdev_priv(priv->slaves[i].ndev);
989 priv->coal_intvl = coal_intvl;
990 }
991 } else {
992 priv->coal_intvl = coal_intvl;
993 }
994
995 return 0;
996 }
997
998 static int cpsw_get_sset_count(struct net_device *ndev, int sset)
999 {
1000 switch (sset) {
1001 case ETH_SS_STATS:
1002 return CPSW_STATS_LEN;
1003 default:
1004 return -EOPNOTSUPP;
1005 }
1006 }
1007
1008 static void cpsw_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
1009 {
1010 u8 *p = data;
1011 int i;
1012
1013 switch (stringset) {
1014 case ETH_SS_STATS:
1015 for (i = 0; i < CPSW_STATS_LEN; i++) {
1016 memcpy(p, cpsw_gstrings_stats[i].stat_string,
1017 ETH_GSTRING_LEN);
1018 p += ETH_GSTRING_LEN;
1019 }
1020 break;
1021 }
1022 }
1023
1024 static void cpsw_get_ethtool_stats(struct net_device *ndev,
1025 struct ethtool_stats *stats, u64 *data)
1026 {
1027 struct cpsw_priv *priv = netdev_priv(ndev);
1028 struct cpdma_chan_stats rx_stats;
1029 struct cpdma_chan_stats tx_stats;
1030 u32 val;
1031 u8 *p;
1032 int i;
1033
1034 /* Collect Davinci CPDMA stats for Rx and Tx Channel */
1035 cpdma_chan_get_stats(priv->rxch, &rx_stats);
1036 cpdma_chan_get_stats(priv->txch, &tx_stats);
1037
1038 for (i = 0; i < CPSW_STATS_LEN; i++) {
1039 switch (cpsw_gstrings_stats[i].type) {
1040 case CPSW_STATS:
1041 val = readl(priv->hw_stats +
1042 cpsw_gstrings_stats[i].stat_offset);
1043 data[i] = val;
1044 break;
1045
1046 case CPDMA_RX_STATS:
1047 p = (u8 *)&rx_stats +
1048 cpsw_gstrings_stats[i].stat_offset;
1049 data[i] = *(u32 *)p;
1050 break;
1051
1052 case CPDMA_TX_STATS:
1053 p = (u8 *)&tx_stats +
1054 cpsw_gstrings_stats[i].stat_offset;
1055 data[i] = *(u32 *)p;
1056 break;
1057 }
1058 }
1059 }
1060
1061 static int cpsw_common_res_usage_state(struct cpsw_priv *priv)
1062 {
1063 u32 i;
1064 u32 usage_count = 0;
1065
1066 if (!priv->data.dual_emac)
1067 return 0;
1068
1069 for (i = 0; i < priv->data.slaves; i++)
1070 if (priv->slaves[i].open_stat)
1071 usage_count++;
1072
1073 return usage_count;
1074 }
1075
1076 static inline int cpsw_tx_packet_submit(struct net_device *ndev,
1077 struct cpsw_priv *priv, struct sk_buff *skb)
1078 {
1079 if (!priv->data.dual_emac)
1080 return cpdma_chan_submit(priv->txch, skb, skb->data,
1081 skb->len, 0);
1082
1083 if (ndev == cpsw_get_slave_ndev(priv, 0))
1084 return cpdma_chan_submit(priv->txch, skb, skb->data,
1085 skb->len, 1);
1086 else
1087 return cpdma_chan_submit(priv->txch, skb, skb->data,
1088 skb->len, 2);
1089 }
1090
1091 static inline void cpsw_add_dual_emac_def_ale_entries(
1092 struct cpsw_priv *priv, struct cpsw_slave *slave,
1093 u32 slave_port)
1094 {
1095 u32 port_mask = 1 << slave_port | 1 << priv->host_port;
1096
1097 if (priv->version == CPSW_VERSION_1)
1098 slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
1099 else
1100 slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
1101 cpsw_ale_add_vlan(priv->ale, slave->port_vlan, port_mask,
1102 port_mask, port_mask, 0);
1103 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1104 port_mask, ALE_VLAN, slave->port_vlan, 0);
1105 cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1106 priv->host_port, ALE_VLAN, slave->port_vlan);
1107 }
1108
1109 static void soft_reset_slave(struct cpsw_slave *slave)
1110 {
1111 char name[32];
1112
1113 snprintf(name, sizeof(name), "slave-%d", slave->slave_num);
1114 soft_reset(name, &slave->sliver->soft_reset);
1115 }
1116
1117 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
1118 {
1119 u32 slave_port;
1120
1121 soft_reset_slave(slave);
1122
1123 /* setup priority mapping */
1124 __raw_writel(RX_PRIORITY_MAPPING, &slave->sliver->rx_pri_map);
1125
1126 switch (priv->version) {
1127 case CPSW_VERSION_1:
1128 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
1129 break;
1130 case CPSW_VERSION_2:
1131 case CPSW_VERSION_3:
1132 case CPSW_VERSION_4:
1133 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
1134 break;
1135 }
1136
1137 /* setup max packet size, and mac address */
1138 __raw_writel(priv->rx_packet_max, &slave->sliver->rx_maxlen);
1139 cpsw_set_slave_mac(slave, priv);
1140
1141 slave->mac_control = 0; /* no link yet */
1142
1143 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1144
1145 if (priv->data.dual_emac)
1146 cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
1147 else
1148 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1149 1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
1150
1151 slave->phy = phy_connect(priv->ndev, slave->data->phy_id,
1152 &cpsw_adjust_link, slave->data->phy_if);
1153 if (IS_ERR(slave->phy)) {
1154 dev_err(priv->dev, "phy %s not found on slave %d\n",
1155 slave->data->phy_id, slave->slave_num);
1156 slave->phy = NULL;
1157 } else {
1158 dev_info(priv->dev, "phy found : id is : 0x%x\n",
1159 slave->phy->phy_id);
1160 phy_start(slave->phy);
1161
1162 /* Configure GMII_SEL register */
1163 cpsw_phy_sel(&priv->pdev->dev, slave->phy->interface,
1164 slave->slave_num);
1165 }
1166 }
1167
1168 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
1169 {
1170 const int vlan = priv->data.default_vlan;
1171 const int port = priv->host_port;
1172 u32 reg;
1173 int i;
1174 int unreg_mcast_mask;
1175
1176 reg = (priv->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
1177 CPSW2_PORT_VLAN;
1178
1179 writel(vlan, &priv->host_port_regs->port_vlan);
1180
1181 for (i = 0; i < priv->data.slaves; i++)
1182 slave_write(priv->slaves + i, vlan, reg);
1183
1184 if (priv->ndev->flags & IFF_ALLMULTI)
1185 unreg_mcast_mask = ALE_ALL_PORTS;
1186 else
1187 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1188
1189 cpsw_ale_add_vlan(priv->ale, vlan, ALE_ALL_PORTS << port,
1190 ALE_ALL_PORTS << port, ALE_ALL_PORTS << port,
1191 unreg_mcast_mask << port);
1192 }
1193
1194 static void cpsw_init_host_port(struct cpsw_priv *priv)
1195 {
1196 u32 control_reg;
1197 u32 fifo_mode;
1198
1199 /* soft reset the controller and initialize ale */
1200 soft_reset("cpsw", &priv->regs->soft_reset);
1201 cpsw_ale_start(priv->ale);
1202
1203 /* switch to vlan unaware mode */
1204 cpsw_ale_control_set(priv->ale, priv->host_port, ALE_VLAN_AWARE,
1205 CPSW_ALE_VLAN_AWARE);
1206 control_reg = readl(&priv->regs->control);
1207 control_reg |= CPSW_VLAN_AWARE;
1208 writel(control_reg, &priv->regs->control);
1209 fifo_mode = (priv->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
1210 CPSW_FIFO_NORMAL_MODE;
1211 writel(fifo_mode, &priv->host_port_regs->tx_in_ctl);
1212
1213 /* setup host port priority mapping */
1214 __raw_writel(CPDMA_TX_PRIORITY_MAP,
1215 &priv->host_port_regs->cpdma_tx_pri_map);
1216 __raw_writel(0, &priv->host_port_regs->cpdma_rx_chan_map);
1217
1218 cpsw_ale_control_set(priv->ale, priv->host_port,
1219 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
1220
1221 if (!priv->data.dual_emac) {
1222 cpsw_ale_add_ucast(priv->ale, priv->mac_addr, priv->host_port,
1223 0, 0);
1224 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1225 1 << priv->host_port, 0, 0, ALE_MCAST_FWD_2);
1226 }
1227 }
1228
1229 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_priv *priv)
1230 {
1231 u32 slave_port;
1232
1233 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1234
1235 if (!slave->phy)
1236 return;
1237 phy_stop(slave->phy);
1238 phy_disconnect(slave->phy);
1239 slave->phy = NULL;
1240 cpsw_ale_control_set(priv->ale, slave_port,
1241 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
1242 }
1243
1244 static int cpsw_ndo_open(struct net_device *ndev)
1245 {
1246 struct cpsw_priv *priv = netdev_priv(ndev);
1247 struct cpsw_priv *prim_cpsw;
1248 int i, ret;
1249 u32 reg;
1250
1251 if (!cpsw_common_res_usage_state(priv))
1252 cpsw_intr_disable(priv);
1253 netif_carrier_off(ndev);
1254
1255 pm_runtime_get_sync(&priv->pdev->dev);
1256
1257 reg = priv->version;
1258
1259 dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
1260 CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
1261 CPSW_RTL_VERSION(reg));
1262
1263 /* initialize host and slave ports */
1264 if (!cpsw_common_res_usage_state(priv))
1265 cpsw_init_host_port(priv);
1266 for_each_slave(priv, cpsw_slave_open, priv);
1267
1268 /* Add default VLAN */
1269 if (!priv->data.dual_emac)
1270 cpsw_add_default_vlan(priv);
1271 else
1272 cpsw_ale_add_vlan(priv->ale, priv->data.default_vlan,
1273 ALE_ALL_PORTS << priv->host_port,
1274 ALE_ALL_PORTS << priv->host_port, 0, 0);
1275
1276 if (!cpsw_common_res_usage_state(priv)) {
1277 /* setup tx dma to fixed prio and zero offset */
1278 cpdma_control_set(priv->dma, CPDMA_TX_PRIO_FIXED, 1);
1279 cpdma_control_set(priv->dma, CPDMA_RX_BUFFER_OFFSET, 0);
1280
1281 /* disable priority elevation */
1282 __raw_writel(0, &priv->regs->ptype);
1283
1284 /* enable statistics collection only on all ports */
1285 __raw_writel(0x7, &priv->regs->stat_port_en);
1286
1287 /* Enable internal fifo flow control */
1288 writel(0x7, &priv->regs->flow_control);
1289
1290 if (WARN_ON(!priv->data.rx_descs))
1291 priv->data.rx_descs = 128;
1292
1293 for (i = 0; i < priv->data.rx_descs; i++) {
1294 struct sk_buff *skb;
1295
1296 ret = -ENOMEM;
1297 skb = __netdev_alloc_skb_ip_align(priv->ndev,
1298 priv->rx_packet_max, GFP_KERNEL);
1299 if (!skb)
1300 goto err_cleanup;
1301 ret = cpdma_chan_submit(priv->rxch, skb, skb->data,
1302 skb_tailroom(skb), 0);
1303 if (ret < 0) {
1304 kfree_skb(skb);
1305 goto err_cleanup;
1306 }
1307 }
1308 /* continue even if we didn't manage to submit all
1309 * receive descs
1310 */
1311 cpsw_info(priv, ifup, "submitted %d rx descriptors\n", i);
1312
1313 if (cpts_register(&priv->pdev->dev, priv->cpts,
1314 priv->data.cpts_clock_mult,
1315 priv->data.cpts_clock_shift))
1316 dev_err(priv->dev, "error registering cpts device\n");
1317
1318 }
1319
1320 /* Enable Interrupt pacing if configured */
1321 if (priv->coal_intvl != 0) {
1322 struct ethtool_coalesce coal;
1323
1324 coal.rx_coalesce_usecs = (priv->coal_intvl << 4);
1325 cpsw_set_coalesce(ndev, &coal);
1326 }
1327
1328 napi_enable(&priv->napi);
1329 cpdma_ctlr_start(priv->dma);
1330 cpsw_intr_enable(priv);
1331
1332 prim_cpsw = cpsw_get_slave_priv(priv, 0);
1333 if (prim_cpsw->irq_enabled == false) {
1334 if ((priv == prim_cpsw) || !netif_running(prim_cpsw->ndev)) {
1335 prim_cpsw->irq_enabled = true;
1336 cpsw_enable_irq(prim_cpsw);
1337 }
1338 }
1339
1340 if (priv->data.dual_emac)
1341 priv->slaves[priv->emac_port].open_stat = true;
1342 return 0;
1343
1344 err_cleanup:
1345 cpdma_ctlr_stop(priv->dma);
1346 for_each_slave(priv, cpsw_slave_stop, priv);
1347 pm_runtime_put_sync(&priv->pdev->dev);
1348 netif_carrier_off(priv->ndev);
1349 return ret;
1350 }
1351
1352 static int cpsw_ndo_stop(struct net_device *ndev)
1353 {
1354 struct cpsw_priv *priv = netdev_priv(ndev);
1355
1356 cpsw_info(priv, ifdown, "shutting down cpsw device\n");
1357 netif_stop_queue(priv->ndev);
1358 napi_disable(&priv->napi);
1359 netif_carrier_off(priv->ndev);
1360
1361 if (cpsw_common_res_usage_state(priv) <= 1) {
1362 cpts_unregister(priv->cpts);
1363 cpsw_intr_disable(priv);
1364 cpdma_ctlr_int_ctrl(priv->dma, false);
1365 cpdma_ctlr_stop(priv->dma);
1366 cpsw_ale_stop(priv->ale);
1367 }
1368 for_each_slave(priv, cpsw_slave_stop, priv);
1369 pm_runtime_put_sync(&priv->pdev->dev);
1370 if (priv->data.dual_emac)
1371 priv->slaves[priv->emac_port].open_stat = false;
1372 return 0;
1373 }
1374
1375 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
1376 struct net_device *ndev)
1377 {
1378 struct cpsw_priv *priv = netdev_priv(ndev);
1379 int ret;
1380
1381 ndev->trans_start = jiffies;
1382
1383 if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
1384 cpsw_err(priv, tx_err, "packet pad failed\n");
1385 ndev->stats.tx_dropped++;
1386 return NETDEV_TX_OK;
1387 }
1388
1389 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
1390 priv->cpts->tx_enable)
1391 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
1392
1393 skb_tx_timestamp(skb);
1394
1395 ret = cpsw_tx_packet_submit(ndev, priv, skb);
1396 if (unlikely(ret != 0)) {
1397 cpsw_err(priv, tx_err, "desc submit failed\n");
1398 goto fail;
1399 }
1400
1401 /* If there is no more tx desc left free then we need to
1402 * tell the kernel to stop sending us tx frames.
1403 */
1404 if (unlikely(!cpdma_check_free_tx_desc(priv->txch)))
1405 netif_stop_queue(ndev);
1406
1407 return NETDEV_TX_OK;
1408 fail:
1409 ndev->stats.tx_dropped++;
1410 netif_stop_queue(ndev);
1411 return NETDEV_TX_BUSY;
1412 }
1413
1414 #ifdef CONFIG_TI_CPTS
1415
1416 static void cpsw_hwtstamp_v1(struct cpsw_priv *priv)
1417 {
1418 struct cpsw_slave *slave = &priv->slaves[priv->data.active_slave];
1419 u32 ts_en, seq_id;
1420
1421 if (!priv->cpts->tx_enable && !priv->cpts->rx_enable) {
1422 slave_write(slave, 0, CPSW1_TS_CTL);
1423 return;
1424 }
1425
1426 seq_id = (30 << CPSW_V1_SEQ_ID_OFS_SHIFT) | ETH_P_1588;
1427 ts_en = EVENT_MSG_BITS << CPSW_V1_MSG_TYPE_OFS;
1428
1429 if (priv->cpts->tx_enable)
1430 ts_en |= CPSW_V1_TS_TX_EN;
1431
1432 if (priv->cpts->rx_enable)
1433 ts_en |= CPSW_V1_TS_RX_EN;
1434
1435 slave_write(slave, ts_en, CPSW1_TS_CTL);
1436 slave_write(slave, seq_id, CPSW1_TS_SEQ_LTYPE);
1437 }
1438
1439 static void cpsw_hwtstamp_v2(struct cpsw_priv *priv)
1440 {
1441 struct cpsw_slave *slave;
1442 u32 ctrl, mtype;
1443
1444 if (priv->data.dual_emac)
1445 slave = &priv->slaves[priv->emac_port];
1446 else
1447 slave = &priv->slaves[priv->data.active_slave];
1448
1449 ctrl = slave_read(slave, CPSW2_CONTROL);
1450 switch (priv->version) {
1451 case CPSW_VERSION_2:
1452 ctrl &= ~CTRL_V2_ALL_TS_MASK;
1453
1454 if (priv->cpts->tx_enable)
1455 ctrl |= CTRL_V2_TX_TS_BITS;
1456
1457 if (priv->cpts->rx_enable)
1458 ctrl |= CTRL_V2_RX_TS_BITS;
1459 break;
1460 case CPSW_VERSION_3:
1461 default:
1462 ctrl &= ~CTRL_V3_ALL_TS_MASK;
1463
1464 if (priv->cpts->tx_enable)
1465 ctrl |= CTRL_V3_TX_TS_BITS;
1466
1467 if (priv->cpts->rx_enable)
1468 ctrl |= CTRL_V3_RX_TS_BITS;
1469 break;
1470 }
1471
1472 mtype = (30 << TS_SEQ_ID_OFFSET_SHIFT) | EVENT_MSG_BITS;
1473
1474 slave_write(slave, mtype, CPSW2_TS_SEQ_MTYPE);
1475 slave_write(slave, ctrl, CPSW2_CONTROL);
1476 __raw_writel(ETH_P_1588, &priv->regs->ts_ltype);
1477 }
1478
1479 static int cpsw_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
1480 {
1481 struct cpsw_priv *priv = netdev_priv(dev);
1482 struct cpts *cpts = priv->cpts;
1483 struct hwtstamp_config cfg;
1484
1485 if (priv->version != CPSW_VERSION_1 &&
1486 priv->version != CPSW_VERSION_2 &&
1487 priv->version != CPSW_VERSION_3)
1488 return -EOPNOTSUPP;
1489
1490 if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
1491 return -EFAULT;
1492
1493 /* reserved for future extensions */
1494 if (cfg.flags)
1495 return -EINVAL;
1496
1497 if (cfg.tx_type != HWTSTAMP_TX_OFF && cfg.tx_type != HWTSTAMP_TX_ON)
1498 return -ERANGE;
1499
1500 switch (cfg.rx_filter) {
1501 case HWTSTAMP_FILTER_NONE:
1502 cpts->rx_enable = 0;
1503 break;
1504 case HWTSTAMP_FILTER_ALL:
1505 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
1506 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
1507 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
1508 return -ERANGE;
1509 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
1510 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
1511 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
1512 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
1513 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
1514 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
1515 case HWTSTAMP_FILTER_PTP_V2_EVENT:
1516 case HWTSTAMP_FILTER_PTP_V2_SYNC:
1517 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
1518 cpts->rx_enable = 1;
1519 cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
1520 break;
1521 default:
1522 return -ERANGE;
1523 }
1524
1525 cpts->tx_enable = cfg.tx_type == HWTSTAMP_TX_ON;
1526
1527 switch (priv->version) {
1528 case CPSW_VERSION_1:
1529 cpsw_hwtstamp_v1(priv);
1530 break;
1531 case CPSW_VERSION_2:
1532 case CPSW_VERSION_3:
1533 cpsw_hwtstamp_v2(priv);
1534 break;
1535 default:
1536 WARN_ON(1);
1537 }
1538
1539 return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1540 }
1541
1542 static int cpsw_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
1543 {
1544 struct cpsw_priv *priv = netdev_priv(dev);
1545 struct cpts *cpts = priv->cpts;
1546 struct hwtstamp_config cfg;
1547
1548 if (priv->version != CPSW_VERSION_1 &&
1549 priv->version != CPSW_VERSION_2 &&
1550 priv->version != CPSW_VERSION_3)
1551 return -EOPNOTSUPP;
1552
1553 cfg.flags = 0;
1554 cfg.tx_type = cpts->tx_enable ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF;
1555 cfg.rx_filter = (cpts->rx_enable ?
1556 HWTSTAMP_FILTER_PTP_V2_EVENT : HWTSTAMP_FILTER_NONE);
1557
1558 return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1559 }
1560
1561 #endif /*CONFIG_TI_CPTS*/
1562
1563 static int cpsw_ndo_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
1564 {
1565 struct cpsw_priv *priv = netdev_priv(dev);
1566 int slave_no = cpsw_slave_index(priv);
1567
1568 if (!netif_running(dev))
1569 return -EINVAL;
1570
1571 switch (cmd) {
1572 #ifdef CONFIG_TI_CPTS
1573 case SIOCSHWTSTAMP:
1574 return cpsw_hwtstamp_set(dev, req);
1575 case SIOCGHWTSTAMP:
1576 return cpsw_hwtstamp_get(dev, req);
1577 #endif
1578 }
1579
1580 if (!priv->slaves[slave_no].phy)
1581 return -EOPNOTSUPP;
1582 return phy_mii_ioctl(priv->slaves[slave_no].phy, req, cmd);
1583 }
1584
1585 static void cpsw_ndo_tx_timeout(struct net_device *ndev)
1586 {
1587 struct cpsw_priv *priv = netdev_priv(ndev);
1588
1589 cpsw_err(priv, tx_err, "transmit timeout, restarting dma\n");
1590 ndev->stats.tx_errors++;
1591 cpsw_intr_disable(priv);
1592 cpdma_ctlr_int_ctrl(priv->dma, false);
1593 cpdma_chan_stop(priv->txch);
1594 cpdma_chan_start(priv->txch);
1595 cpdma_ctlr_int_ctrl(priv->dma, true);
1596 cpsw_intr_enable(priv);
1597 }
1598
1599 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
1600 {
1601 struct cpsw_priv *priv = netdev_priv(ndev);
1602 struct sockaddr *addr = (struct sockaddr *)p;
1603 int flags = 0;
1604 u16 vid = 0;
1605
1606 if (!is_valid_ether_addr(addr->sa_data))
1607 return -EADDRNOTAVAIL;
1608
1609 if (priv->data.dual_emac) {
1610 vid = priv->slaves[priv->emac_port].port_vlan;
1611 flags = ALE_VLAN;
1612 }
1613
1614 cpsw_ale_del_ucast(priv->ale, priv->mac_addr, priv->host_port,
1615 flags, vid);
1616 cpsw_ale_add_ucast(priv->ale, addr->sa_data, priv->host_port,
1617 flags, vid);
1618
1619 memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
1620 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
1621 for_each_slave(priv, cpsw_set_slave_mac, priv);
1622
1623 return 0;
1624 }
1625
1626 #ifdef CONFIG_NET_POLL_CONTROLLER
1627 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1628 {
1629 struct cpsw_priv *priv = netdev_priv(ndev);
1630
1631 cpsw_intr_disable(priv);
1632 cpdma_ctlr_int_ctrl(priv->dma, false);
1633 cpsw_rx_interrupt(priv->irqs_table[0], priv);
1634 cpsw_tx_interrupt(priv->irqs_table[1], priv);
1635 cpdma_ctlr_int_ctrl(priv->dma, true);
1636 cpsw_intr_enable(priv);
1637 }
1638 #endif
1639
1640 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
1641 unsigned short vid)
1642 {
1643 int ret;
1644 int unreg_mcast_mask = 0;
1645 u32 port_mask;
1646
1647 if (priv->data.dual_emac) {
1648 port_mask = (1 << (priv->emac_port + 1)) | ALE_PORT_HOST;
1649
1650 if (priv->ndev->flags & IFF_ALLMULTI)
1651 unreg_mcast_mask = port_mask;
1652 } else {
1653 port_mask = ALE_ALL_PORTS;
1654
1655 if (priv->ndev->flags & IFF_ALLMULTI)
1656 unreg_mcast_mask = ALE_ALL_PORTS;
1657 else
1658 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1659 }
1660
1661 ret = cpsw_ale_add_vlan(priv->ale, vid, port_mask, 0, port_mask,
1662 unreg_mcast_mask << priv->host_port);
1663 if (ret != 0)
1664 return ret;
1665
1666 ret = cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1667 priv->host_port, ALE_VLAN, vid);
1668 if (ret != 0)
1669 goto clean_vid;
1670
1671 ret = cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1672 port_mask, ALE_VLAN, vid, 0);
1673 if (ret != 0)
1674 goto clean_vlan_ucast;
1675 return 0;
1676
1677 clean_vlan_ucast:
1678 cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1679 priv->host_port, ALE_VLAN, vid);
1680 clean_vid:
1681 cpsw_ale_del_vlan(priv->ale, vid, 0);
1682 return ret;
1683 }
1684
1685 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1686 __be16 proto, u16 vid)
1687 {
1688 struct cpsw_priv *priv = netdev_priv(ndev);
1689
1690 if (vid == priv->data.default_vlan)
1691 return 0;
1692
1693 if (priv->data.dual_emac) {
1694 /* In dual EMAC, reserved VLAN id should not be used for
1695 * creating VLAN interfaces as this can break the dual
1696 * EMAC port separation
1697 */
1698 int i;
1699
1700 for (i = 0; i < priv->data.slaves; i++) {
1701 if (vid == priv->slaves[i].port_vlan)
1702 return -EINVAL;
1703 }
1704 }
1705
1706 dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1707 return cpsw_add_vlan_ale_entry(priv, vid);
1708 }
1709
1710 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1711 __be16 proto, u16 vid)
1712 {
1713 struct cpsw_priv *priv = netdev_priv(ndev);
1714 int ret;
1715
1716 if (vid == priv->data.default_vlan)
1717 return 0;
1718
1719 if (priv->data.dual_emac) {
1720 int i;
1721
1722 for (i = 0; i < priv->data.slaves; i++) {
1723 if (vid == priv->slaves[i].port_vlan)
1724 return -EINVAL;
1725 }
1726 }
1727
1728 dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1729 ret = cpsw_ale_del_vlan(priv->ale, vid, 0);
1730 if (ret != 0)
1731 return ret;
1732
1733 ret = cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1734 priv->host_port, ALE_VLAN, vid);
1735 if (ret != 0)
1736 return ret;
1737
1738 return cpsw_ale_del_mcast(priv->ale, priv->ndev->broadcast,
1739 0, ALE_VLAN, vid);
1740 }
1741
1742 static const struct net_device_ops cpsw_netdev_ops = {
1743 .ndo_open = cpsw_ndo_open,
1744 .ndo_stop = cpsw_ndo_stop,
1745 .ndo_start_xmit = cpsw_ndo_start_xmit,
1746 .ndo_set_mac_address = cpsw_ndo_set_mac_address,
1747 .ndo_do_ioctl = cpsw_ndo_ioctl,
1748 .ndo_validate_addr = eth_validate_addr,
1749 .ndo_change_mtu = eth_change_mtu,
1750 .ndo_tx_timeout = cpsw_ndo_tx_timeout,
1751 .ndo_set_rx_mode = cpsw_ndo_set_rx_mode,
1752 #ifdef CONFIG_NET_POLL_CONTROLLER
1753 .ndo_poll_controller = cpsw_ndo_poll_controller,
1754 #endif
1755 .ndo_vlan_rx_add_vid = cpsw_ndo_vlan_rx_add_vid,
1756 .ndo_vlan_rx_kill_vid = cpsw_ndo_vlan_rx_kill_vid,
1757 };
1758
1759 static int cpsw_get_regs_len(struct net_device *ndev)
1760 {
1761 struct cpsw_priv *priv = netdev_priv(ndev);
1762
1763 return priv->data.ale_entries * ALE_ENTRY_WORDS * sizeof(u32);
1764 }
1765
1766 static void cpsw_get_regs(struct net_device *ndev,
1767 struct ethtool_regs *regs, void *p)
1768 {
1769 struct cpsw_priv *priv = netdev_priv(ndev);
1770 u32 *reg = p;
1771
1772 /* update CPSW IP version */
1773 regs->version = priv->version;
1774
1775 cpsw_ale_dump(priv->ale, reg);
1776 }
1777
1778 static void cpsw_get_drvinfo(struct net_device *ndev,
1779 struct ethtool_drvinfo *info)
1780 {
1781 struct cpsw_priv *priv = netdev_priv(ndev);
1782
1783 strlcpy(info->driver, "cpsw", sizeof(info->driver));
1784 strlcpy(info->version, "1.0", sizeof(info->version));
1785 strlcpy(info->bus_info, priv->pdev->name, sizeof(info->bus_info));
1786 info->regdump_len = cpsw_get_regs_len(ndev);
1787 }
1788
1789 static u32 cpsw_get_msglevel(struct net_device *ndev)
1790 {
1791 struct cpsw_priv *priv = netdev_priv(ndev);
1792 return priv->msg_enable;
1793 }
1794
1795 static void cpsw_set_msglevel(struct net_device *ndev, u32 value)
1796 {
1797 struct cpsw_priv *priv = netdev_priv(ndev);
1798 priv->msg_enable = value;
1799 }
1800
1801 static int cpsw_get_ts_info(struct net_device *ndev,
1802 struct ethtool_ts_info *info)
1803 {
1804 #ifdef CONFIG_TI_CPTS
1805 struct cpsw_priv *priv = netdev_priv(ndev);
1806
1807 info->so_timestamping =
1808 SOF_TIMESTAMPING_TX_HARDWARE |
1809 SOF_TIMESTAMPING_TX_SOFTWARE |
1810 SOF_TIMESTAMPING_RX_HARDWARE |
1811 SOF_TIMESTAMPING_RX_SOFTWARE |
1812 SOF_TIMESTAMPING_SOFTWARE |
1813 SOF_TIMESTAMPING_RAW_HARDWARE;
1814 info->phc_index = priv->cpts->phc_index;
1815 info->tx_types =
1816 (1 << HWTSTAMP_TX_OFF) |
1817 (1 << HWTSTAMP_TX_ON);
1818 info->rx_filters =
1819 (1 << HWTSTAMP_FILTER_NONE) |
1820 (1 << HWTSTAMP_FILTER_PTP_V2_EVENT);
1821 #else
1822 info->so_timestamping =
1823 SOF_TIMESTAMPING_TX_SOFTWARE |
1824 SOF_TIMESTAMPING_RX_SOFTWARE |
1825 SOF_TIMESTAMPING_SOFTWARE;
1826 info->phc_index = -1;
1827 info->tx_types = 0;
1828 info->rx_filters = 0;
1829 #endif
1830 return 0;
1831 }
1832
1833 static int cpsw_get_settings(struct net_device *ndev,
1834 struct ethtool_cmd *ecmd)
1835 {
1836 struct cpsw_priv *priv = netdev_priv(ndev);
1837 int slave_no = cpsw_slave_index(priv);
1838
1839 if (priv->slaves[slave_no].phy)
1840 return phy_ethtool_gset(priv->slaves[slave_no].phy, ecmd);
1841 else
1842 return -EOPNOTSUPP;
1843 }
1844
1845 static int cpsw_set_settings(struct net_device *ndev, struct ethtool_cmd *ecmd)
1846 {
1847 struct cpsw_priv *priv = netdev_priv(ndev);
1848 int slave_no = cpsw_slave_index(priv);
1849
1850 if (priv->slaves[slave_no].phy)
1851 return phy_ethtool_sset(priv->slaves[slave_no].phy, ecmd);
1852 else
1853 return -EOPNOTSUPP;
1854 }
1855
1856 static void cpsw_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1857 {
1858 struct cpsw_priv *priv = netdev_priv(ndev);
1859 int slave_no = cpsw_slave_index(priv);
1860
1861 wol->supported = 0;
1862 wol->wolopts = 0;
1863
1864 if (priv->slaves[slave_no].phy)
1865 phy_ethtool_get_wol(priv->slaves[slave_no].phy, wol);
1866 }
1867
1868 static int cpsw_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1869 {
1870 struct cpsw_priv *priv = netdev_priv(ndev);
1871 int slave_no = cpsw_slave_index(priv);
1872
1873 if (priv->slaves[slave_no].phy)
1874 return phy_ethtool_set_wol(priv->slaves[slave_no].phy, wol);
1875 else
1876 return -EOPNOTSUPP;
1877 }
1878
1879 static void cpsw_get_pauseparam(struct net_device *ndev,
1880 struct ethtool_pauseparam *pause)
1881 {
1882 struct cpsw_priv *priv = netdev_priv(ndev);
1883
1884 pause->autoneg = AUTONEG_DISABLE;
1885 pause->rx_pause = priv->rx_pause ? true : false;
1886 pause->tx_pause = priv->tx_pause ? true : false;
1887 }
1888
1889 static int cpsw_set_pauseparam(struct net_device *ndev,
1890 struct ethtool_pauseparam *pause)
1891 {
1892 struct cpsw_priv *priv = netdev_priv(ndev);
1893 bool link;
1894
1895 priv->rx_pause = pause->rx_pause ? true : false;
1896 priv->tx_pause = pause->tx_pause ? true : false;
1897
1898 for_each_slave(priv, _cpsw_adjust_link, priv, &link);
1899
1900 return 0;
1901 }
1902
1903 static const struct ethtool_ops cpsw_ethtool_ops = {
1904 .get_drvinfo = cpsw_get_drvinfo,
1905 .get_msglevel = cpsw_get_msglevel,
1906 .set_msglevel = cpsw_set_msglevel,
1907 .get_link = ethtool_op_get_link,
1908 .get_ts_info = cpsw_get_ts_info,
1909 .get_settings = cpsw_get_settings,
1910 .set_settings = cpsw_set_settings,
1911 .get_coalesce = cpsw_get_coalesce,
1912 .set_coalesce = cpsw_set_coalesce,
1913 .get_sset_count = cpsw_get_sset_count,
1914 .get_strings = cpsw_get_strings,
1915 .get_ethtool_stats = cpsw_get_ethtool_stats,
1916 .get_pauseparam = cpsw_get_pauseparam,
1917 .set_pauseparam = cpsw_set_pauseparam,
1918 .get_wol = cpsw_get_wol,
1919 .set_wol = cpsw_set_wol,
1920 .get_regs_len = cpsw_get_regs_len,
1921 .get_regs = cpsw_get_regs,
1922 };
1923
1924 static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv,
1925 u32 slave_reg_ofs, u32 sliver_reg_ofs)
1926 {
1927 void __iomem *regs = priv->regs;
1928 int slave_num = slave->slave_num;
1929 struct cpsw_slave_data *data = priv->data.slave_data + slave_num;
1930
1931 slave->data = data;
1932 slave->regs = regs + slave_reg_ofs;
1933 slave->sliver = regs + sliver_reg_ofs;
1934 slave->port_vlan = data->dual_emac_res_vlan;
1935 }
1936
1937 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1938 struct platform_device *pdev)
1939 {
1940 struct device_node *node = pdev->dev.of_node;
1941 struct device_node *slave_node;
1942 int i = 0, ret;
1943 u32 prop;
1944
1945 if (!node)
1946 return -EINVAL;
1947
1948 if (of_property_read_u32(node, "slaves", &prop)) {
1949 dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1950 return -EINVAL;
1951 }
1952 data->slaves = prop;
1953
1954 if (of_property_read_u32(node, "active_slave", &prop)) {
1955 dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1956 return -EINVAL;
1957 }
1958 data->active_slave = prop;
1959
1960 if (of_property_read_u32(node, "cpts_clock_mult", &prop)) {
1961 dev_err(&pdev->dev, "Missing cpts_clock_mult property in the DT.\n");
1962 return -EINVAL;
1963 }
1964 data->cpts_clock_mult = prop;
1965
1966 if (of_property_read_u32(node, "cpts_clock_shift", &prop)) {
1967 dev_err(&pdev->dev, "Missing cpts_clock_shift property in the DT.\n");
1968 return -EINVAL;
1969 }
1970 data->cpts_clock_shift = prop;
1971
1972 data->slave_data = devm_kzalloc(&pdev->dev, data->slaves
1973 * sizeof(struct cpsw_slave_data),
1974 GFP_KERNEL);
1975 if (!data->slave_data)
1976 return -ENOMEM;
1977
1978 if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1979 dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1980 return -EINVAL;
1981 }
1982 data->channels = prop;
1983
1984 if (of_property_read_u32(node, "ale_entries", &prop)) {
1985 dev_err(&pdev->dev, "Missing ale_entries property in the DT.\n");
1986 return -EINVAL;
1987 }
1988 data->ale_entries = prop;
1989
1990 if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1991 dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");
1992 return -EINVAL;
1993 }
1994 data->bd_ram_size = prop;
1995
1996 if (of_property_read_u32(node, "rx_descs", &prop)) {
1997 dev_err(&pdev->dev, "Missing rx_descs property in the DT.\n");
1998 return -EINVAL;
1999 }
2000 data->rx_descs = prop;
2001
2002 if (of_property_read_u32(node, "mac_control", &prop)) {
2003 dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
2004 return -EINVAL;
2005 }
2006 data->mac_control = prop;
2007
2008 if (of_property_read_bool(node, "dual_emac"))
2009 data->dual_emac = 1;
2010
2011 /*
2012 * Populate all the child nodes here...
2013 */
2014 ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
2015 /* We do not want to force this, as in some cases may not have child */
2016 if (ret)
2017 dev_warn(&pdev->dev, "Doesn't have any child node\n");
2018
2019 for_each_child_of_node(node, slave_node) {
2020 struct cpsw_slave_data *slave_data = data->slave_data + i;
2021 const void *mac_addr = NULL;
2022 u32 phyid;
2023 int lenp;
2024 const __be32 *parp;
2025 struct device_node *mdio_node;
2026 struct platform_device *mdio;
2027
2028 /* This is no slave child node, continue */
2029 if (strcmp(slave_node->name, "slave"))
2030 continue;
2031
2032 parp = of_get_property(slave_node, "phy_id", &lenp);
2033 if ((parp == NULL) || (lenp != (sizeof(void *) * 2))) {
2034 dev_err(&pdev->dev, "Missing slave[%d] phy_id property\n", i);
2035 goto no_phy_slave;
2036 }
2037 mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
2038 phyid = be32_to_cpup(parp+1);
2039 mdio = of_find_device_by_node(mdio_node);
2040 of_node_put(mdio_node);
2041 if (!mdio) {
2042 dev_err(&pdev->dev, "Missing mdio platform device\n");
2043 return -EINVAL;
2044 }
2045 snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
2046 PHY_ID_FMT, mdio->name, phyid);
2047
2048 slave_data->phy_if = of_get_phy_mode(slave_node);
2049 if (slave_data->phy_if < 0) {
2050 dev_err(&pdev->dev, "Missing or malformed slave[%d] phy-mode property\n",
2051 i);
2052 return slave_data->phy_if;
2053 }
2054
2055 no_phy_slave:
2056 mac_addr = of_get_mac_address(slave_node);
2057 if (mac_addr) {
2058 memcpy(slave_data->mac_addr, mac_addr, ETH_ALEN);
2059 } else {
2060 if (of_machine_is_compatible("ti,am33xx")) {
2061 ret = cpsw_am33xx_cm_get_macid(&pdev->dev,
2062 0x630, i,
2063 slave_data->mac_addr);
2064 if (ret)
2065 return ret;
2066 }
2067 }
2068 if (data->dual_emac) {
2069 if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
2070 &prop)) {
2071 dev_err(&pdev->dev, "Missing dual_emac_res_vlan in DT.\n");
2072 slave_data->dual_emac_res_vlan = i+1;
2073 dev_err(&pdev->dev, "Using %d as Reserved VLAN for %d slave\n",
2074 slave_data->dual_emac_res_vlan, i);
2075 } else {
2076 slave_data->dual_emac_res_vlan = prop;
2077 }
2078 }
2079
2080 i++;
2081 if (i == data->slaves)
2082 break;
2083 }
2084
2085 return 0;
2086 }
2087
2088 static int cpsw_probe_dual_emac(struct platform_device *pdev,
2089 struct cpsw_priv *priv)
2090 {
2091 struct cpsw_platform_data *data = &priv->data;
2092 struct net_device *ndev;
2093 struct cpsw_priv *priv_sl2;
2094 int ret = 0, i;
2095
2096 ndev = alloc_etherdev(sizeof(struct cpsw_priv));
2097 if (!ndev) {
2098 dev_err(&pdev->dev, "cpsw: error allocating net_device\n");
2099 return -ENOMEM;
2100 }
2101
2102 priv_sl2 = netdev_priv(ndev);
2103 spin_lock_init(&priv_sl2->lock);
2104 priv_sl2->data = *data;
2105 priv_sl2->pdev = pdev;
2106 priv_sl2->ndev = ndev;
2107 priv_sl2->dev = &ndev->dev;
2108 priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
2109 priv_sl2->rx_packet_max = max(rx_packet_max, 128);
2110
2111 if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
2112 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
2113 ETH_ALEN);
2114 dev_info(&pdev->dev, "cpsw: Detected MACID = %pM\n", priv_sl2->mac_addr);
2115 } else {
2116 random_ether_addr(priv_sl2->mac_addr);
2117 dev_info(&pdev->dev, "cpsw: Random MACID = %pM\n", priv_sl2->mac_addr);
2118 }
2119 memcpy(ndev->dev_addr, priv_sl2->mac_addr, ETH_ALEN);
2120
2121 priv_sl2->slaves = priv->slaves;
2122 priv_sl2->clk = priv->clk;
2123
2124 priv_sl2->coal_intvl = 0;
2125 priv_sl2->bus_freq_mhz = priv->bus_freq_mhz;
2126
2127 priv_sl2->regs = priv->regs;
2128 priv_sl2->host_port = priv->host_port;
2129 priv_sl2->host_port_regs = priv->host_port_regs;
2130 priv_sl2->wr_regs = priv->wr_regs;
2131 priv_sl2->hw_stats = priv->hw_stats;
2132 priv_sl2->dma = priv->dma;
2133 priv_sl2->txch = priv->txch;
2134 priv_sl2->rxch = priv->rxch;
2135 priv_sl2->ale = priv->ale;
2136 priv_sl2->emac_port = 1;
2137 priv->slaves[1].ndev = ndev;
2138 priv_sl2->cpts = priv->cpts;
2139 priv_sl2->version = priv->version;
2140
2141 for (i = 0; i < priv->num_irqs; i++) {
2142 priv_sl2->irqs_table[i] = priv->irqs_table[i];
2143 priv_sl2->num_irqs = priv->num_irqs;
2144 }
2145 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2146
2147 ndev->netdev_ops = &cpsw_netdev_ops;
2148 ndev->ethtool_ops = &cpsw_ethtool_ops;
2149 netif_napi_add(ndev, &priv_sl2->napi, cpsw_poll, CPSW_POLL_WEIGHT);
2150
2151 /* register the network device */
2152 SET_NETDEV_DEV(ndev, &pdev->dev);
2153 ret = register_netdev(ndev);
2154 if (ret) {
2155 dev_err(&pdev->dev, "cpsw: error registering net device\n");
2156 free_netdev(ndev);
2157 ret = -ENODEV;
2158 }
2159
2160 return ret;
2161 }
2162
2163 static int cpsw_probe(struct platform_device *pdev)
2164 {
2165 struct cpsw_platform_data *data;
2166 struct net_device *ndev;
2167 struct cpsw_priv *priv;
2168 struct cpdma_params dma_params;
2169 struct cpsw_ale_params ale_params;
2170 void __iomem *ss_regs;
2171 struct resource *res, *ss_res;
2172 u32 slave_offset, sliver_offset, slave_size;
2173 int ret = 0, i;
2174 int irq;
2175
2176 ndev = alloc_etherdev(sizeof(struct cpsw_priv));
2177 if (!ndev) {
2178 dev_err(&pdev->dev, "error allocating net_device\n");
2179 return -ENOMEM;
2180 }
2181
2182 platform_set_drvdata(pdev, ndev);
2183 priv = netdev_priv(ndev);
2184 spin_lock_init(&priv->lock);
2185 priv->pdev = pdev;
2186 priv->ndev = ndev;
2187 priv->dev = &ndev->dev;
2188 priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
2189 priv->rx_packet_max = max(rx_packet_max, 128);
2190 priv->cpts = devm_kzalloc(&pdev->dev, sizeof(struct cpts), GFP_KERNEL);
2191 priv->irq_enabled = true;
2192 if (!priv->cpts) {
2193 dev_err(&pdev->dev, "error allocating cpts\n");
2194 ret = -ENOMEM;
2195 goto clean_ndev_ret;
2196 }
2197
2198 /*
2199 * This may be required here for child devices.
2200 */
2201 pm_runtime_enable(&pdev->dev);
2202
2203 /* Select default pin state */
2204 pinctrl_pm_select_default_state(&pdev->dev);
2205
2206 if (cpsw_probe_dt(&priv->data, pdev)) {
2207 dev_err(&pdev->dev, "cpsw: platform data missing\n");
2208 ret = -ENODEV;
2209 goto clean_runtime_disable_ret;
2210 }
2211 data = &priv->data;
2212
2213 if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
2214 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
2215 dev_info(&pdev->dev, "Detected MACID = %pM\n", priv->mac_addr);
2216 } else {
2217 eth_random_addr(priv->mac_addr);
2218 dev_info(&pdev->dev, "Random MACID = %pM\n", priv->mac_addr);
2219 }
2220
2221 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
2222
2223 priv->slaves = devm_kzalloc(&pdev->dev,
2224 sizeof(struct cpsw_slave) * data->slaves,
2225 GFP_KERNEL);
2226 if (!priv->slaves) {
2227 ret = -ENOMEM;
2228 goto clean_runtime_disable_ret;
2229 }
2230 for (i = 0; i < data->slaves; i++)
2231 priv->slaves[i].slave_num = i;
2232
2233 priv->slaves[0].ndev = ndev;
2234 priv->emac_port = 0;
2235
2236 priv->clk = devm_clk_get(&pdev->dev, "fck");
2237 if (IS_ERR(priv->clk)) {
2238 dev_err(priv->dev, "fck is not found\n");
2239 ret = -ENODEV;
2240 goto clean_runtime_disable_ret;
2241 }
2242 priv->coal_intvl = 0;
2243 priv->bus_freq_mhz = clk_get_rate(priv->clk) / 1000000;
2244
2245 ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2246 ss_regs = devm_ioremap_resource(&pdev->dev, ss_res);
2247 if (IS_ERR(ss_regs)) {
2248 ret = PTR_ERR(ss_regs);
2249 goto clean_runtime_disable_ret;
2250 }
2251 priv->regs = ss_regs;
2252 priv->host_port = HOST_PORT_NUM;
2253
2254 /* Need to enable clocks with runtime PM api to access module
2255 * registers
2256 */
2257 pm_runtime_get_sync(&pdev->dev);
2258 priv->version = readl(&priv->regs->id_ver);
2259 pm_runtime_put_sync(&pdev->dev);
2260
2261 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2262 priv->wr_regs = devm_ioremap_resource(&pdev->dev, res);
2263 if (IS_ERR(priv->wr_regs)) {
2264 ret = PTR_ERR(priv->wr_regs);
2265 goto clean_runtime_disable_ret;
2266 }
2267
2268 memset(&dma_params, 0, sizeof(dma_params));
2269 memset(&ale_params, 0, sizeof(ale_params));
2270
2271 switch (priv->version) {
2272 case CPSW_VERSION_1:
2273 priv->host_port_regs = ss_regs + CPSW1_HOST_PORT_OFFSET;
2274 priv->cpts->reg = ss_regs + CPSW1_CPTS_OFFSET;
2275 priv->hw_stats = ss_regs + CPSW1_HW_STATS;
2276 dma_params.dmaregs = ss_regs + CPSW1_CPDMA_OFFSET;
2277 dma_params.txhdp = ss_regs + CPSW1_STATERAM_OFFSET;
2278 ale_params.ale_regs = ss_regs + CPSW1_ALE_OFFSET;
2279 slave_offset = CPSW1_SLAVE_OFFSET;
2280 slave_size = CPSW1_SLAVE_SIZE;
2281 sliver_offset = CPSW1_SLIVER_OFFSET;
2282 dma_params.desc_mem_phys = 0;
2283 break;
2284 case CPSW_VERSION_2:
2285 case CPSW_VERSION_3:
2286 case CPSW_VERSION_4:
2287 priv->host_port_regs = ss_regs + CPSW2_HOST_PORT_OFFSET;
2288 priv->cpts->reg = ss_regs + CPSW2_CPTS_OFFSET;
2289 priv->hw_stats = ss_regs + CPSW2_HW_STATS;
2290 dma_params.dmaregs = ss_regs + CPSW2_CPDMA_OFFSET;
2291 dma_params.txhdp = ss_regs + CPSW2_STATERAM_OFFSET;
2292 ale_params.ale_regs = ss_regs + CPSW2_ALE_OFFSET;
2293 slave_offset = CPSW2_SLAVE_OFFSET;
2294 slave_size = CPSW2_SLAVE_SIZE;
2295 sliver_offset = CPSW2_SLIVER_OFFSET;
2296 dma_params.desc_mem_phys =
2297 (u32 __force) ss_res->start + CPSW2_BD_OFFSET;
2298 break;
2299 default:
2300 dev_err(priv->dev, "unknown version 0x%08x\n", priv->version);
2301 ret = -ENODEV;
2302 goto clean_runtime_disable_ret;
2303 }
2304 for (i = 0; i < priv->data.slaves; i++) {
2305 struct cpsw_slave *slave = &priv->slaves[i];
2306 cpsw_slave_init(slave, priv, slave_offset, sliver_offset);
2307 slave_offset += slave_size;
2308 sliver_offset += SLIVER_SIZE;
2309 }
2310
2311 dma_params.dev = &pdev->dev;
2312 dma_params.rxthresh = dma_params.dmaregs + CPDMA_RXTHRESH;
2313 dma_params.rxfree = dma_params.dmaregs + CPDMA_RXFREE;
2314 dma_params.rxhdp = dma_params.txhdp + CPDMA_RXHDP;
2315 dma_params.txcp = dma_params.txhdp + CPDMA_TXCP;
2316 dma_params.rxcp = dma_params.txhdp + CPDMA_RXCP;
2317
2318 dma_params.num_chan = data->channels;
2319 dma_params.has_soft_reset = true;
2320 dma_params.min_packet_size = CPSW_MIN_PACKET_SIZE;
2321 dma_params.desc_mem_size = data->bd_ram_size;
2322 dma_params.desc_align = 16;
2323 dma_params.has_ext_regs = true;
2324 dma_params.desc_hw_addr = dma_params.desc_mem_phys;
2325
2326 priv->dma = cpdma_ctlr_create(&dma_params);
2327 if (!priv->dma) {
2328 dev_err(priv->dev, "error initializing dma\n");
2329 ret = -ENOMEM;
2330 goto clean_runtime_disable_ret;
2331 }
2332
2333 priv->txch = cpdma_chan_create(priv->dma, tx_chan_num(0),
2334 cpsw_tx_handler);
2335 priv->rxch = cpdma_chan_create(priv->dma, rx_chan_num(0),
2336 cpsw_rx_handler);
2337
2338 if (WARN_ON(!priv->txch || !priv->rxch)) {
2339 dev_err(priv->dev, "error initializing dma channels\n");
2340 ret = -ENOMEM;
2341 goto clean_dma_ret;
2342 }
2343
2344 ale_params.dev = &ndev->dev;
2345 ale_params.ale_ageout = ale_ageout;
2346 ale_params.ale_entries = data->ale_entries;
2347 ale_params.ale_ports = data->slaves;
2348
2349 priv->ale = cpsw_ale_create(&ale_params);
2350 if (!priv->ale) {
2351 dev_err(priv->dev, "error initializing ale engine\n");
2352 ret = -ENODEV;
2353 goto clean_dma_ret;
2354 }
2355
2356 ndev->irq = platform_get_irq(pdev, 1);
2357 if (ndev->irq < 0) {
2358 dev_err(priv->dev, "error getting irq resource\n");
2359 ret = -ENOENT;
2360 goto clean_ale_ret;
2361 }
2362
2363 /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
2364 * MISC IRQs which are always kept disabled with this driver so
2365 * we will not request them.
2366 *
2367 * If anyone wants to implement support for those, make sure to
2368 * first request and append them to irqs_table array.
2369 */
2370
2371 /* RX IRQ */
2372 irq = platform_get_irq(pdev, 1);
2373 if (irq < 0)
2374 goto clean_ale_ret;
2375
2376 priv->irqs_table[0] = irq;
2377 ret = devm_request_irq(&pdev->dev, irq, cpsw_rx_interrupt,
2378 0, dev_name(&pdev->dev), priv);
2379 if (ret < 0) {
2380 dev_err(priv->dev, "error attaching irq (%d)\n", ret);
2381 goto clean_ale_ret;
2382 }
2383
2384 /* TX IRQ */
2385 irq = platform_get_irq(pdev, 2);
2386 if (irq < 0)
2387 goto clean_ale_ret;
2388
2389 priv->irqs_table[1] = irq;
2390 ret = devm_request_irq(&pdev->dev, irq, cpsw_tx_interrupt,
2391 0, dev_name(&pdev->dev), priv);
2392 if (ret < 0) {
2393 dev_err(priv->dev, "error attaching irq (%d)\n", ret);
2394 goto clean_ale_ret;
2395 }
2396 priv->num_irqs = 2;
2397
2398 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2399
2400 ndev->netdev_ops = &cpsw_netdev_ops;
2401 ndev->ethtool_ops = &cpsw_ethtool_ops;
2402 netif_napi_add(ndev, &priv->napi, cpsw_poll, CPSW_POLL_WEIGHT);
2403
2404 /* register the network device */
2405 SET_NETDEV_DEV(ndev, &pdev->dev);
2406 ret = register_netdev(ndev);
2407 if (ret) {
2408 dev_err(priv->dev, "error registering net device\n");
2409 ret = -ENODEV;
2410 goto clean_ale_ret;
2411 }
2412
2413 cpsw_notice(priv, probe, "initialized device (regs %pa, irq %d)\n",
2414 &ss_res->start, ndev->irq);
2415
2416 if (priv->data.dual_emac) {
2417 ret = cpsw_probe_dual_emac(pdev, priv);
2418 if (ret) {
2419 cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
2420 goto clean_ale_ret;
2421 }
2422 }
2423
2424 return 0;
2425
2426 clean_ale_ret:
2427 cpsw_ale_destroy(priv->ale);
2428 clean_dma_ret:
2429 cpdma_chan_destroy(priv->txch);
2430 cpdma_chan_destroy(priv->rxch);
2431 cpdma_ctlr_destroy(priv->dma);
2432 clean_runtime_disable_ret:
2433 pm_runtime_disable(&pdev->dev);
2434 clean_ndev_ret:
2435 free_netdev(priv->ndev);
2436 return ret;
2437 }
2438
2439 static int cpsw_remove_child_device(struct device *dev, void *c)
2440 {
2441 struct platform_device *pdev = to_platform_device(dev);
2442
2443 of_device_unregister(pdev);
2444
2445 return 0;
2446 }
2447
2448 static int cpsw_remove(struct platform_device *pdev)
2449 {
2450 struct net_device *ndev = platform_get_drvdata(pdev);
2451 struct cpsw_priv *priv = netdev_priv(ndev);
2452
2453 if (priv->data.dual_emac)
2454 unregister_netdev(cpsw_get_slave_ndev(priv, 1));
2455 unregister_netdev(ndev);
2456
2457 cpsw_ale_destroy(priv->ale);
2458 cpdma_chan_destroy(priv->txch);
2459 cpdma_chan_destroy(priv->rxch);
2460 cpdma_ctlr_destroy(priv->dma);
2461 pm_runtime_disable(&pdev->dev);
2462 device_for_each_child(&pdev->dev, NULL, cpsw_remove_child_device);
2463 if (priv->data.dual_emac)
2464 free_netdev(cpsw_get_slave_ndev(priv, 1));
2465 free_netdev(ndev);
2466 return 0;
2467 }
2468
2469 static int cpsw_suspend(struct device *dev)
2470 {
2471 struct platform_device *pdev = to_platform_device(dev);
2472 struct net_device *ndev = platform_get_drvdata(pdev);
2473 struct cpsw_priv *priv = netdev_priv(ndev);
2474
2475 if (priv->data.dual_emac) {
2476 int i;
2477
2478 for (i = 0; i < priv->data.slaves; i++) {
2479 if (netif_running(priv->slaves[i].ndev))
2480 cpsw_ndo_stop(priv->slaves[i].ndev);
2481 soft_reset_slave(priv->slaves + i);
2482 }
2483 } else {
2484 if (netif_running(ndev))
2485 cpsw_ndo_stop(ndev);
2486 for_each_slave(priv, soft_reset_slave);
2487 }
2488
2489 pm_runtime_put_sync(&pdev->dev);
2490
2491 /* Select sleep pin state */
2492 pinctrl_pm_select_sleep_state(&pdev->dev);
2493
2494 return 0;
2495 }
2496
2497 static int cpsw_resume(struct device *dev)
2498 {
2499 struct platform_device *pdev = to_platform_device(dev);
2500 struct net_device *ndev = platform_get_drvdata(pdev);
2501 struct cpsw_priv *priv = netdev_priv(ndev);
2502
2503 pm_runtime_get_sync(&pdev->dev);
2504
2505 /* Select default pin state */
2506 pinctrl_pm_select_default_state(&pdev->dev);
2507
2508 if (priv->data.dual_emac) {
2509 int i;
2510
2511 for (i = 0; i < priv->data.slaves; i++) {
2512 if (netif_running(priv->slaves[i].ndev))
2513 cpsw_ndo_open(priv->slaves[i].ndev);
2514 }
2515 } else {
2516 if (netif_running(ndev))
2517 cpsw_ndo_open(ndev);
2518 }
2519 return 0;
2520 }
2521
2522 static const struct dev_pm_ops cpsw_pm_ops = {
2523 .suspend = cpsw_suspend,
2524 .resume = cpsw_resume,
2525 };
2526
2527 static const struct of_device_id cpsw_of_mtable[] = {
2528 { .compatible = "ti,cpsw", },
2529 { /* sentinel */ },
2530 };
2531 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
2532
2533 static struct platform_driver cpsw_driver = {
2534 .driver = {
2535 .name = "cpsw",
2536 .pm = &cpsw_pm_ops,
2537 .of_match_table = cpsw_of_mtable,
2538 },
2539 .probe = cpsw_probe,
2540 .remove = cpsw_remove,
2541 };
2542
2543 static int __init cpsw_init(void)
2544 {
2545 return platform_driver_register(&cpsw_driver);
2546 }
2547 late_initcall(cpsw_init);
2548
2549 static void __exit cpsw_exit(void)
2550 {
2551 platform_driver_unregister(&cpsw_driver);
2552 }
2553 module_exit(cpsw_exit);
2554
2555 MODULE_LICENSE("GPL");
2556 MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
2557 MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
2558 MODULE_DESCRIPTION("TI CPSW Ethernet driver");
Linux kernel - Deliverables
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