2 * Texas Instruments Ethernet Switch Driver
4 * Copyright (C) 2012 Texas Instruments
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.
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.
16 #include <linux/kernel.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>
33 #include <linux/of_net.h>
34 #include <linux/of_device.h>
35 #include <linux/if_vlan.h>
36 #include <linux/mfd/syscon.h>
37 #include <linux/regmap.h>
39 #include <linux/pinctrl/consumer.h>
44 #include "davinci_cpdma.h"
46 #define CPSW_DEBUG (NETIF_MSG_HW | NETIF_MSG_WOL | \
47 NETIF_MSG_DRV | NETIF_MSG_LINK | \
48 NETIF_MSG_IFUP | NETIF_MSG_INTR | \
49 NETIF_MSG_PROBE | NETIF_MSG_TIMER | \
50 NETIF_MSG_IFDOWN | NETIF_MSG_RX_ERR | \
51 NETIF_MSG_TX_ERR | NETIF_MSG_TX_DONE | \
52 NETIF_MSG_PKTDATA | NETIF_MSG_TX_QUEUED | \
55 #define cpsw_info(priv, type, format, ...) \
57 if (netif_msg_##type(priv) && net_ratelimit()) \
58 dev_info(priv->dev, format, ## __VA_ARGS__); \
61 #define cpsw_err(priv, type, format, ...) \
63 if (netif_msg_##type(priv) && net_ratelimit()) \
64 dev_err(priv->dev, format, ## __VA_ARGS__); \
67 #define cpsw_dbg(priv, type, format, ...) \
69 if (netif_msg_##type(priv) && net_ratelimit()) \
70 dev_dbg(priv->dev, format, ## __VA_ARGS__); \
73 #define cpsw_notice(priv, type, format, ...) \
75 if (netif_msg_##type(priv) && net_ratelimit()) \
76 dev_notice(priv->dev, format, ## __VA_ARGS__); \
79 #define ALE_ALL_PORTS 0x7
81 #define CPSW_MAJOR_VERSION(reg) (reg >> 8 & 0x7)
82 #define CPSW_MINOR_VERSION(reg) (reg & 0xff)
83 #define CPSW_RTL_VERSION(reg) ((reg >> 11) & 0x1f)
85 #define CPSW_VERSION_1 0x19010a
86 #define CPSW_VERSION_2 0x19010c
87 #define CPSW_VERSION_3 0x19010f
88 #define CPSW_VERSION_4 0x190112
90 #define HOST_PORT_NUM 0
91 #define SLIVER_SIZE 0x40
93 #define CPSW1_HOST_PORT_OFFSET 0x028
94 #define CPSW1_SLAVE_OFFSET 0x050
95 #define CPSW1_SLAVE_SIZE 0x040
96 #define CPSW1_CPDMA_OFFSET 0x100
97 #define CPSW1_STATERAM_OFFSET 0x200
98 #define CPSW1_HW_STATS 0x400
99 #define CPSW1_CPTS_OFFSET 0x500
100 #define CPSW1_ALE_OFFSET 0x600
101 #define CPSW1_SLIVER_OFFSET 0x700
103 #define CPSW2_HOST_PORT_OFFSET 0x108
104 #define CPSW2_SLAVE_OFFSET 0x200
105 #define CPSW2_SLAVE_SIZE 0x100
106 #define CPSW2_CPDMA_OFFSET 0x800
107 #define CPSW2_HW_STATS 0x900
108 #define CPSW2_STATERAM_OFFSET 0xa00
109 #define CPSW2_CPTS_OFFSET 0xc00
110 #define CPSW2_ALE_OFFSET 0xd00
111 #define CPSW2_SLIVER_OFFSET 0xd80
112 #define CPSW2_BD_OFFSET 0x2000
114 #define CPDMA_RXTHRESH 0x0c0
115 #define CPDMA_RXFREE 0x0e0
116 #define CPDMA_TXHDP 0x00
117 #define CPDMA_RXHDP 0x20
118 #define CPDMA_TXCP 0x40
119 #define CPDMA_RXCP 0x60
121 #define CPSW_POLL_WEIGHT 64
122 #define CPSW_MIN_PACKET_SIZE 60
123 #define CPSW_MAX_PACKET_SIZE (1500 + 14 + 4 + 4)
125 #define RX_PRIORITY_MAPPING 0x76543210
126 #define TX_PRIORITY_MAPPING 0x33221100
127 #define CPDMA_TX_PRIORITY_MAP 0x76543210
129 #define CPSW_VLAN_AWARE BIT(1)
130 #define CPSW_ALE_VLAN_AWARE 1
132 #define CPSW_FIFO_NORMAL_MODE (0 << 16)
133 #define CPSW_FIFO_DUAL_MAC_MODE (1 << 16)
134 #define CPSW_FIFO_RATE_LIMIT_MODE (2 << 16)
136 #define CPSW_INTPACEEN (0x3f << 16)
137 #define CPSW_INTPRESCALE_MASK (0x7FF << 0)
138 #define CPSW_CMINTMAX_CNT 63
139 #define CPSW_CMINTMIN_CNT 2
140 #define CPSW_CMINTMAX_INTVL (1000 / CPSW_CMINTMIN_CNT)
141 #define CPSW_CMINTMIN_INTVL ((1000 / CPSW_CMINTMAX_CNT) + 1)
143 #define cpsw_enable_irq(priv) \
146 for (i = 0; i < priv->num_irqs; i++) \
147 enable_irq(priv->irqs_table[i]); \
149 #define cpsw_disable_irq(priv) \
152 for (i = 0; i < priv->num_irqs; i++) \
153 disable_irq_nosync(priv->irqs_table[i]); \
156 #define cpsw_slave_index(priv) \
157 ((priv->data.dual_emac) ? priv->emac_port : \
158 priv->data.active_slave)
160 static int debug_level;
161 module_param(debug_level, int, 0);
162 MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)");
164 static int ale_ageout = 10;
165 module_param(ale_ageout, int, 0);
166 MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)");
168 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
169 module_param(rx_packet_max, int, 0);
170 MODULE_PARM_DESC(rx_packet_max, "maximum receive packet size (bytes)");
172 struct cpsw_wr_regs {
192 struct cpsw_ss_regs {
209 #define CPSW1_MAX_BLKS 0x00 /* Maximum FIFO Blocks */
210 #define CPSW1_BLK_CNT 0x04 /* FIFO Block Usage Count (Read Only) */
211 #define CPSW1_TX_IN_CTL 0x08 /* Transmit FIFO Control */
212 #define CPSW1_PORT_VLAN 0x0c /* VLAN Register */
213 #define CPSW1_TX_PRI_MAP 0x10 /* Tx Header Priority to Switch Pri Mapping */
214 #define CPSW1_TS_CTL 0x14 /* Time Sync Control */
215 #define CPSW1_TS_SEQ_LTYPE 0x18 /* Time Sync Sequence ID Offset and Msg Type */
216 #define CPSW1_TS_VLAN 0x1c /* Time Sync VLAN1 and VLAN2 */
219 #define CPSW2_CONTROL 0x00 /* Control Register */
220 #define CPSW2_MAX_BLKS 0x08 /* Maximum FIFO Blocks */
221 #define CPSW2_BLK_CNT 0x0c /* FIFO Block Usage Count (Read Only) */
222 #define CPSW2_TX_IN_CTL 0x10 /* Transmit FIFO Control */
223 #define CPSW2_PORT_VLAN 0x14 /* VLAN Register */
224 #define CPSW2_TX_PRI_MAP 0x18 /* Tx Header Priority to Switch Pri Mapping */
225 #define CPSW2_TS_SEQ_MTYPE 0x1c /* Time Sync Sequence ID Offset and Msg Type */
227 /* CPSW_PORT_V1 and V2 */
228 #define SA_LO 0x20 /* CPGMAC_SL Source Address Low */
229 #define SA_HI 0x24 /* CPGMAC_SL Source Address High */
230 #define SEND_PERCENT 0x28 /* Transmit Queue Send Percentages */
232 /* CPSW_PORT_V2 only */
233 #define RX_DSCP_PRI_MAP0 0x30 /* Rx DSCP Priority to Rx Packet Mapping */
234 #define RX_DSCP_PRI_MAP1 0x34 /* Rx DSCP Priority to Rx Packet Mapping */
235 #define RX_DSCP_PRI_MAP2 0x38 /* Rx DSCP Priority to Rx Packet Mapping */
236 #define RX_DSCP_PRI_MAP3 0x3c /* Rx DSCP Priority to Rx Packet Mapping */
237 #define RX_DSCP_PRI_MAP4 0x40 /* Rx DSCP Priority to Rx Packet Mapping */
238 #define RX_DSCP_PRI_MAP5 0x44 /* Rx DSCP Priority to Rx Packet Mapping */
239 #define RX_DSCP_PRI_MAP6 0x48 /* Rx DSCP Priority to Rx Packet Mapping */
240 #define RX_DSCP_PRI_MAP7 0x4c /* Rx DSCP Priority to Rx Packet Mapping */
242 /* Bit definitions for the CPSW2_CONTROL register */
243 #define PASS_PRI_TAGGED (1<<24) /* Pass Priority Tagged */
244 #define VLAN_LTYPE2_EN (1<<21) /* VLAN LTYPE 2 enable */
245 #define VLAN_LTYPE1_EN (1<<20) /* VLAN LTYPE 1 enable */
246 #define DSCP_PRI_EN (1<<16) /* DSCP Priority Enable */
247 #define TS_320 (1<<14) /* Time Sync Dest Port 320 enable */
248 #define TS_319 (1<<13) /* Time Sync Dest Port 319 enable */
249 #define TS_132 (1<<12) /* Time Sync Dest IP Addr 132 enable */
250 #define TS_131 (1<<11) /* Time Sync Dest IP Addr 131 enable */
251 #define TS_130 (1<<10) /* Time Sync Dest IP Addr 130 enable */
252 #define TS_129 (1<<9) /* Time Sync Dest IP Addr 129 enable */
253 #define TS_TTL_NONZERO (1<<8) /* Time Sync Time To Live Non-zero enable */
254 #define TS_ANNEX_F_EN (1<<6) /* Time Sync Annex F enable */
255 #define TS_ANNEX_D_EN (1<<4) /* Time Sync Annex D enable */
256 #define TS_LTYPE2_EN (1<<3) /* Time Sync LTYPE 2 enable */
257 #define TS_LTYPE1_EN (1<<2) /* Time Sync LTYPE 1 enable */
258 #define TS_TX_EN (1<<1) /* Time Sync Transmit Enable */
259 #define TS_RX_EN (1<<0) /* Time Sync Receive Enable */
261 #define CTRL_V2_TS_BITS \
262 (TS_320 | TS_319 | TS_132 | TS_131 | TS_130 | TS_129 |\
263 TS_TTL_NONZERO | TS_ANNEX_D_EN | TS_LTYPE1_EN)
265 #define CTRL_V2_ALL_TS_MASK (CTRL_V2_TS_BITS | TS_TX_EN | TS_RX_EN)
266 #define CTRL_V2_TX_TS_BITS (CTRL_V2_TS_BITS | TS_TX_EN)
267 #define CTRL_V2_RX_TS_BITS (CTRL_V2_TS_BITS | TS_RX_EN)
270 #define CTRL_V3_TS_BITS \
271 (TS_320 | TS_319 | TS_132 | TS_131 | TS_130 | TS_129 |\
272 TS_TTL_NONZERO | TS_ANNEX_F_EN | TS_ANNEX_D_EN |\
275 #define CTRL_V3_ALL_TS_MASK (CTRL_V3_TS_BITS | TS_TX_EN | TS_RX_EN)
276 #define CTRL_V3_TX_TS_BITS (CTRL_V3_TS_BITS | TS_TX_EN)
277 #define CTRL_V3_RX_TS_BITS (CTRL_V3_TS_BITS | TS_RX_EN)
279 /* Bit definitions for the CPSW2_TS_SEQ_MTYPE register */
280 #define TS_SEQ_ID_OFFSET_SHIFT (16) /* Time Sync Sequence ID Offset */
281 #define TS_SEQ_ID_OFFSET_MASK (0x3f)
282 #define TS_MSG_TYPE_EN_SHIFT (0) /* Time Sync Message Type Enable */
283 #define TS_MSG_TYPE_EN_MASK (0xffff)
285 /* The PTP event messages - Sync, Delay_Req, Pdelay_Req, and Pdelay_Resp. */
286 #define EVENT_MSG_BITS ((1<<0) | (1<<1) | (1<<2) | (1<<3))
288 /* Bit definitions for the CPSW1_TS_CTL register */
289 #define CPSW_V1_TS_RX_EN BIT(0)
290 #define CPSW_V1_TS_TX_EN BIT(4)
291 #define CPSW_V1_MSG_TYPE_OFS 16
293 /* Bit definitions for the CPSW1_TS_SEQ_LTYPE register */
294 #define CPSW_V1_SEQ_ID_OFS_SHIFT 16
296 struct cpsw_host_regs {
302 u32 cpdma_tx_pri_map;
303 u32 cpdma_rx_chan_map;
306 struct cpsw_sliver_regs {
319 struct cpsw_hw_stats {
321 u32 rxbroadcastframes;
322 u32 rxmulticastframes;
325 u32 rxaligncodeerrors;
326 u32 rxoversizedframes;
328 u32 rxundersizedframes;
333 u32 txbroadcastframes;
334 u32 txmulticastframes;
336 u32 txdeferredframes;
337 u32 txcollisionframes;
338 u32 txsinglecollframes;
339 u32 txmultcollframes;
340 u32 txexcessivecollisions;
341 u32 txlatecollisions;
343 u32 txcarriersenseerrors;
346 u32 octetframes65t127;
347 u32 octetframes128t255;
348 u32 octetframes256t511;
349 u32 octetframes512t1023;
350 u32 octetframes1024tup;
359 struct cpsw_sliver_regs __iomem *sliver;
362 struct cpsw_slave_data *data;
363 struct phy_device *phy;
364 struct net_device *ndev;
369 static inline u32 slave_read(struct cpsw_slave *slave, u32 offset)
371 return __raw_readl(slave->regs + offset);
374 static inline void slave_write(struct cpsw_slave *slave, u32 val, u32 offset)
376 __raw_writel(val, slave->regs + offset);
381 struct platform_device *pdev;
382 struct net_device *ndev;
383 struct napi_struct napi;
385 struct cpsw_platform_data data;
386 struct cpsw_ss_regs __iomem *regs;
387 struct cpsw_wr_regs __iomem *wr_regs;
388 u8 __iomem *hw_stats;
389 struct cpsw_host_regs __iomem *host_port_regs;
397 u8 mac_addr[ETH_ALEN];
398 struct cpsw_slave *slaves;
399 struct cpdma_ctlr *dma;
400 struct cpdma_chan *txch, *rxch;
401 struct cpsw_ale *ale;
404 /* snapshot of IRQ numbers */
413 char stat_string[ETH_GSTRING_LEN];
425 #define CPSW_STAT(m) CPSW_STATS, \
426 sizeof(((struct cpsw_hw_stats *)0)->m), \
427 offsetof(struct cpsw_hw_stats, m)
428 #define CPDMA_RX_STAT(m) CPDMA_RX_STATS, \
429 sizeof(((struct cpdma_chan_stats *)0)->m), \
430 offsetof(struct cpdma_chan_stats, m)
431 #define CPDMA_TX_STAT(m) CPDMA_TX_STATS, \
432 sizeof(((struct cpdma_chan_stats *)0)->m), \
433 offsetof(struct cpdma_chan_stats, m)
435 static const struct cpsw_stats cpsw_gstrings_stats[] = {
436 { "Good Rx Frames", CPSW_STAT(rxgoodframes) },
437 { "Broadcast Rx Frames", CPSW_STAT(rxbroadcastframes) },
438 { "Multicast Rx Frames", CPSW_STAT(rxmulticastframes) },
439 { "Pause Rx Frames", CPSW_STAT(rxpauseframes) },
440 { "Rx CRC Errors", CPSW_STAT(rxcrcerrors) },
441 { "Rx Align/Code Errors", CPSW_STAT(rxaligncodeerrors) },
442 { "Oversize Rx Frames", CPSW_STAT(rxoversizedframes) },
443 { "Rx Jabbers", CPSW_STAT(rxjabberframes) },
444 { "Undersize (Short) Rx Frames", CPSW_STAT(rxundersizedframes) },
445 { "Rx Fragments", CPSW_STAT(rxfragments) },
446 { "Rx Octets", CPSW_STAT(rxoctets) },
447 { "Good Tx Frames", CPSW_STAT(txgoodframes) },
448 { "Broadcast Tx Frames", CPSW_STAT(txbroadcastframes) },
449 { "Multicast Tx Frames", CPSW_STAT(txmulticastframes) },
450 { "Pause Tx Frames", CPSW_STAT(txpauseframes) },
451 { "Deferred Tx Frames", CPSW_STAT(txdeferredframes) },
452 { "Collisions", CPSW_STAT(txcollisionframes) },
453 { "Single Collision Tx Frames", CPSW_STAT(txsinglecollframes) },
454 { "Multiple Collision Tx Frames", CPSW_STAT(txmultcollframes) },
455 { "Excessive Collisions", CPSW_STAT(txexcessivecollisions) },
456 { "Late Collisions", CPSW_STAT(txlatecollisions) },
457 { "Tx Underrun", CPSW_STAT(txunderrun) },
458 { "Carrier Sense Errors", CPSW_STAT(txcarriersenseerrors) },
459 { "Tx Octets", CPSW_STAT(txoctets) },
460 { "Rx + Tx 64 Octet Frames", CPSW_STAT(octetframes64) },
461 { "Rx + Tx 65-127 Octet Frames", CPSW_STAT(octetframes65t127) },
462 { "Rx + Tx 128-255 Octet Frames", CPSW_STAT(octetframes128t255) },
463 { "Rx + Tx 256-511 Octet Frames", CPSW_STAT(octetframes256t511) },
464 { "Rx + Tx 512-1023 Octet Frames", CPSW_STAT(octetframes512t1023) },
465 { "Rx + Tx 1024-Up Octet Frames", CPSW_STAT(octetframes1024tup) },
466 { "Net Octets", CPSW_STAT(netoctets) },
467 { "Rx Start of Frame Overruns", CPSW_STAT(rxsofoverruns) },
468 { "Rx Middle of Frame Overruns", CPSW_STAT(rxmofoverruns) },
469 { "Rx DMA Overruns", CPSW_STAT(rxdmaoverruns) },
470 { "Rx DMA chan: head_enqueue", CPDMA_RX_STAT(head_enqueue) },
471 { "Rx DMA chan: tail_enqueue", CPDMA_RX_STAT(tail_enqueue) },
472 { "Rx DMA chan: pad_enqueue", CPDMA_RX_STAT(pad_enqueue) },
473 { "Rx DMA chan: misqueued", CPDMA_RX_STAT(misqueued) },
474 { "Rx DMA chan: desc_alloc_fail", CPDMA_RX_STAT(desc_alloc_fail) },
475 { "Rx DMA chan: pad_alloc_fail", CPDMA_RX_STAT(pad_alloc_fail) },
476 { "Rx DMA chan: runt_receive_buf", CPDMA_RX_STAT(runt_receive_buff) },
477 { "Rx DMA chan: runt_transmit_buf", CPDMA_RX_STAT(runt_transmit_buff) },
478 { "Rx DMA chan: empty_dequeue", CPDMA_RX_STAT(empty_dequeue) },
479 { "Rx DMA chan: busy_dequeue", CPDMA_RX_STAT(busy_dequeue) },
480 { "Rx DMA chan: good_dequeue", CPDMA_RX_STAT(good_dequeue) },
481 { "Rx DMA chan: requeue", CPDMA_RX_STAT(requeue) },
482 { "Rx DMA chan: teardown_dequeue", CPDMA_RX_STAT(teardown_dequeue) },
483 { "Tx DMA chan: head_enqueue", CPDMA_TX_STAT(head_enqueue) },
484 { "Tx DMA chan: tail_enqueue", CPDMA_TX_STAT(tail_enqueue) },
485 { "Tx DMA chan: pad_enqueue", CPDMA_TX_STAT(pad_enqueue) },
486 { "Tx DMA chan: misqueued", CPDMA_TX_STAT(misqueued) },
487 { "Tx DMA chan: desc_alloc_fail", CPDMA_TX_STAT(desc_alloc_fail) },
488 { "Tx DMA chan: pad_alloc_fail", CPDMA_TX_STAT(pad_alloc_fail) },
489 { "Tx DMA chan: runt_receive_buf", CPDMA_TX_STAT(runt_receive_buff) },
490 { "Tx DMA chan: runt_transmit_buf", CPDMA_TX_STAT(runt_transmit_buff) },
491 { "Tx DMA chan: empty_dequeue", CPDMA_TX_STAT(empty_dequeue) },
492 { "Tx DMA chan: busy_dequeue", CPDMA_TX_STAT(busy_dequeue) },
493 { "Tx DMA chan: good_dequeue", CPDMA_TX_STAT(good_dequeue) },
494 { "Tx DMA chan: requeue", CPDMA_TX_STAT(requeue) },
495 { "Tx DMA chan: teardown_dequeue", CPDMA_TX_STAT(teardown_dequeue) },
498 #define CPSW_STATS_LEN ARRAY_SIZE(cpsw_gstrings_stats)
500 #define napi_to_priv(napi) container_of(napi, struct cpsw_priv, napi)
501 #define for_each_slave(priv, func, arg...) \
503 struct cpsw_slave *slave; \
505 if (priv->data.dual_emac) \
506 (func)((priv)->slaves + priv->emac_port, ##arg);\
508 for (n = (priv)->data.slaves, \
509 slave = (priv)->slaves; \
511 (func)(slave++, ##arg); \
513 #define cpsw_get_slave_ndev(priv, __slave_no__) \
514 (priv->slaves[__slave_no__].ndev)
515 #define cpsw_get_slave_priv(priv, __slave_no__) \
516 ((priv->slaves[__slave_no__].ndev) ? \
517 netdev_priv(priv->slaves[__slave_no__].ndev) : NULL) \
519 #define cpsw_dual_emac_src_port_detect(status, priv, ndev, skb) \
521 if (!priv->data.dual_emac) \
523 if (CPDMA_RX_SOURCE_PORT(status) == 1) { \
524 ndev = cpsw_get_slave_ndev(priv, 0); \
525 priv = netdev_priv(ndev); \
527 } else if (CPDMA_RX_SOURCE_PORT(status) == 2) { \
528 ndev = cpsw_get_slave_ndev(priv, 1); \
529 priv = netdev_priv(ndev); \
533 #define cpsw_add_mcast(priv, addr) \
535 if (priv->data.dual_emac) { \
536 struct cpsw_slave *slave = priv->slaves + \
538 int slave_port = cpsw_get_slave_port(priv, \
540 cpsw_ale_add_mcast(priv->ale, addr, \
541 1 << slave_port | 1 << priv->host_port, \
542 ALE_VLAN, slave->port_vlan, 0); \
544 cpsw_ale_add_mcast(priv->ale, addr, \
545 ALE_ALL_PORTS << priv->host_port, \
550 static inline int cpsw_get_slave_port(struct cpsw_priv *priv, u32 slave_num)
552 if (priv->host_port == 0)
553 return slave_num + 1;
558 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
560 struct cpsw_priv *priv = netdev_priv(ndev);
561 struct cpsw_ale *ale = priv->ale;
564 if (priv->data.dual_emac) {
567 /* Enabling promiscuous mode for one interface will be
568 * common for both the interface as the interface shares
569 * the same hardware resource.
571 for (i = 0; i < priv->data.slaves; i++)
572 if (priv->slaves[i].ndev->flags & IFF_PROMISC)
575 if (!enable && flag) {
577 dev_err(&ndev->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
582 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 1);
584 dev_dbg(&ndev->dev, "promiscuity enabled\n");
587 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 0);
588 dev_dbg(&ndev->dev, "promiscuity disabled\n");
592 unsigned long timeout = jiffies + HZ;
594 /* Disable Learn for all ports (host is port 0 and slaves are port 1 and up */
595 for (i = 0; i <= priv->data.slaves; i++) {
596 cpsw_ale_control_set(ale, i,
597 ALE_PORT_NOLEARN, 1);
598 cpsw_ale_control_set(ale, i,
599 ALE_PORT_NO_SA_UPDATE, 1);
602 /* Clear All Untouched entries */
603 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
606 if (cpsw_ale_control_get(ale, 0, ALE_AGEOUT))
608 } while (time_after(timeout, jiffies));
609 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
611 /* Clear all mcast from ALE */
612 cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS <<
615 /* Flood All Unicast Packets to Host port */
616 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1);
617 dev_dbg(&ndev->dev, "promiscuity enabled\n");
619 /* Don't Flood All Unicast Packets to Host port */
620 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);
622 /* Enable Learn for all ports (host is port 0 and slaves are port 1 and up */
623 for (i = 0; i <= priv->data.slaves; i++) {
624 cpsw_ale_control_set(ale, i,
625 ALE_PORT_NOLEARN, 0);
626 cpsw_ale_control_set(ale, i,
627 ALE_PORT_NO_SA_UPDATE, 0);
629 dev_dbg(&ndev->dev, "promiscuity disabled\n");
634 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
636 struct cpsw_priv *priv = netdev_priv(ndev);
638 if (ndev->flags & IFF_PROMISC) {
639 /* Enable promiscuous mode */
640 cpsw_set_promiscious(ndev, true);
641 cpsw_ale_set_allmulti(priv->ale, IFF_ALLMULTI);
644 /* Disable promiscuous mode */
645 cpsw_set_promiscious(ndev, false);
648 /* Restore allmulti on vlans if necessary */
649 cpsw_ale_set_allmulti(priv->ale, priv->ndev->flags & IFF_ALLMULTI);
651 /* Clear all mcast from ALE */
652 cpsw_ale_flush_multicast(priv->ale, ALE_ALL_PORTS << priv->host_port);
654 if (!netdev_mc_empty(ndev)) {
655 struct netdev_hw_addr *ha;
657 /* program multicast address list into ALE register */
658 netdev_for_each_mc_addr(ha, ndev) {
659 cpsw_add_mcast(priv, (u8 *)ha->addr);
664 static void cpsw_intr_enable(struct cpsw_priv *priv)
666 __raw_writel(0xFF, &priv->wr_regs->tx_en);
667 __raw_writel(0xFF, &priv->wr_regs->rx_en);
669 cpdma_ctlr_int_ctrl(priv->dma, true);
673 static void cpsw_intr_disable(struct cpsw_priv *priv)
675 __raw_writel(0, &priv->wr_regs->tx_en);
676 __raw_writel(0, &priv->wr_regs->rx_en);
678 cpdma_ctlr_int_ctrl(priv->dma, false);
682 static void cpsw_tx_handler(void *token, int len, int status)
684 struct sk_buff *skb = token;
685 struct net_device *ndev = skb->dev;
686 struct cpsw_priv *priv = netdev_priv(ndev);
688 /* Check whether the queue is stopped due to stalled tx dma, if the
689 * queue is stopped then start the queue as we have free desc for tx
691 if (unlikely(netif_queue_stopped(ndev)))
692 netif_wake_queue(ndev);
693 cpts_tx_timestamp(priv->cpts, skb);
694 ndev->stats.tx_packets++;
695 ndev->stats.tx_bytes += len;
696 dev_kfree_skb_any(skb);
699 static void cpsw_rx_handler(void *token, int len, int status)
701 struct sk_buff *skb = token;
702 struct sk_buff *new_skb;
703 struct net_device *ndev = skb->dev;
704 struct cpsw_priv *priv = netdev_priv(ndev);
707 cpsw_dual_emac_src_port_detect(status, priv, ndev, skb);
709 if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
710 bool ndev_status = false;
711 struct cpsw_slave *slave = priv->slaves;
714 if (priv->data.dual_emac) {
715 /* In dual emac mode check for all interfaces */
716 for (n = priv->data.slaves; n; n--, slave++)
717 if (netif_running(slave->ndev))
721 if (ndev_status && (status >= 0)) {
722 /* The packet received is for the interface which
723 * is already down and the other interface is up
724 * and running, intead of freeing which results
725 * in reducing of the number of rx descriptor in
726 * DMA engine, requeue skb back to cpdma.
732 /* the interface is going down, skbs are purged */
733 dev_kfree_skb_any(skb);
737 new_skb = netdev_alloc_skb_ip_align(ndev, priv->rx_packet_max);
740 cpts_rx_timestamp(priv->cpts, skb);
741 skb->protocol = eth_type_trans(skb, ndev);
742 netif_receive_skb(skb);
743 ndev->stats.rx_bytes += len;
744 ndev->stats.rx_packets++;
746 ndev->stats.rx_dropped++;
751 ret = cpdma_chan_submit(priv->rxch, new_skb, new_skb->data,
752 skb_tailroom(new_skb), 0);
753 if (WARN_ON(ret < 0))
754 dev_kfree_skb_any(new_skb);
757 static irqreturn_t cpsw_interrupt(int irq, void *dev_id)
759 struct cpsw_priv *priv = dev_id;
760 int value = irq - priv->irqs_table[0];
762 /* NOTICE: Ending IRQ here. The trick with the 'value' variable above
763 * is to make sure we will always write the correct value to the EOI
764 * register. Namely 0 for RX_THRESH Interrupt, 1 for RX Interrupt, 2
765 * for TX Interrupt and 3 for MISC Interrupt.
767 cpdma_ctlr_eoi(priv->dma, value);
769 cpsw_intr_disable(priv);
770 if (priv->irq_enabled == true) {
771 cpsw_disable_irq(priv);
772 priv->irq_enabled = false;
775 if (netif_running(priv->ndev)) {
776 napi_schedule(&priv->napi);
780 priv = cpsw_get_slave_priv(priv, 1);
784 if (netif_running(priv->ndev)) {
785 napi_schedule(&priv->napi);
791 static int cpsw_poll(struct napi_struct *napi, int budget)
793 struct cpsw_priv *priv = napi_to_priv(napi);
796 num_tx = cpdma_chan_process(priv->txch, 128);
798 num_rx = cpdma_chan_process(priv->rxch, budget);
799 if (num_rx < budget) {
800 struct cpsw_priv *prim_cpsw;
803 cpsw_intr_enable(priv);
804 prim_cpsw = cpsw_get_slave_priv(priv, 0);
805 if (prim_cpsw->irq_enabled == false) {
806 prim_cpsw->irq_enabled = true;
807 cpsw_enable_irq(priv);
811 if (num_rx || num_tx)
812 cpsw_dbg(priv, intr, "poll %d rx, %d tx pkts\n",
818 static inline void soft_reset(const char *module, void __iomem *reg)
820 unsigned long timeout = jiffies + HZ;
822 __raw_writel(1, reg);
825 } while ((__raw_readl(reg) & 1) && time_after(timeout, jiffies));
827 WARN(__raw_readl(reg) & 1, "failed to soft-reset %s\n", module);
830 #define mac_hi(mac) (((mac)[0] << 0) | ((mac)[1] << 8) | \
831 ((mac)[2] << 16) | ((mac)[3] << 24))
832 #define mac_lo(mac) (((mac)[4] << 0) | ((mac)[5] << 8))
834 static void cpsw_set_slave_mac(struct cpsw_slave *slave,
835 struct cpsw_priv *priv)
837 slave_write(slave, mac_hi(priv->mac_addr), SA_HI);
838 slave_write(slave, mac_lo(priv->mac_addr), SA_LO);
841 static void _cpsw_adjust_link(struct cpsw_slave *slave,
842 struct cpsw_priv *priv, bool *link)
844 struct phy_device *phy = slave->phy;
851 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
854 mac_control = priv->data.mac_control;
856 /* enable forwarding */
857 cpsw_ale_control_set(priv->ale, slave_port,
858 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
860 if (phy->speed == 1000)
861 mac_control |= BIT(7); /* GIGABITEN */
863 mac_control |= BIT(0); /* FULLDUPLEXEN */
865 /* set speed_in input in case RMII mode is used in 100Mbps */
866 if (phy->speed == 100)
867 mac_control |= BIT(15);
868 else if (phy->speed == 10)
869 mac_control |= BIT(18); /* In Band mode */
872 mac_control |= BIT(3);
875 mac_control |= BIT(4);
880 /* disable forwarding */
881 cpsw_ale_control_set(priv->ale, slave_port,
882 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
885 if (mac_control != slave->mac_control) {
886 phy_print_status(phy);
887 __raw_writel(mac_control, &slave->sliver->mac_control);
890 slave->mac_control = mac_control;
893 static void cpsw_adjust_link(struct net_device *ndev)
895 struct cpsw_priv *priv = netdev_priv(ndev);
898 for_each_slave(priv, _cpsw_adjust_link, priv, &link);
901 netif_carrier_on(ndev);
902 if (netif_running(ndev))
903 netif_wake_queue(ndev);
905 netif_carrier_off(ndev);
906 netif_stop_queue(ndev);
910 static int cpsw_get_coalesce(struct net_device *ndev,
911 struct ethtool_coalesce *coal)
913 struct cpsw_priv *priv = netdev_priv(ndev);
915 coal->rx_coalesce_usecs = priv->coal_intvl;
919 static int cpsw_set_coalesce(struct net_device *ndev,
920 struct ethtool_coalesce *coal)
922 struct cpsw_priv *priv = netdev_priv(ndev);
924 u32 num_interrupts = 0;
929 coal_intvl = coal->rx_coalesce_usecs;
931 int_ctrl = readl(&priv->wr_regs->int_control);
932 prescale = priv->bus_freq_mhz * 4;
934 if (!coal->rx_coalesce_usecs) {
935 int_ctrl &= ~(CPSW_INTPRESCALE_MASK | CPSW_INTPACEEN);
939 if (coal_intvl < CPSW_CMINTMIN_INTVL)
940 coal_intvl = CPSW_CMINTMIN_INTVL;
942 if (coal_intvl > CPSW_CMINTMAX_INTVL) {
943 /* Interrupt pacer works with 4us Pulse, we can
944 * throttle further by dilating the 4us pulse.
946 addnl_dvdr = CPSW_INTPRESCALE_MASK / prescale;
948 if (addnl_dvdr > 1) {
949 prescale *= addnl_dvdr;
950 if (coal_intvl > (CPSW_CMINTMAX_INTVL * addnl_dvdr))
951 coal_intvl = (CPSW_CMINTMAX_INTVL
955 coal_intvl = CPSW_CMINTMAX_INTVL;
959 num_interrupts = (1000 * addnl_dvdr) / coal_intvl;
960 writel(num_interrupts, &priv->wr_regs->rx_imax);
961 writel(num_interrupts, &priv->wr_regs->tx_imax);
963 int_ctrl |= CPSW_INTPACEEN;
964 int_ctrl &= (~CPSW_INTPRESCALE_MASK);
965 int_ctrl |= (prescale & CPSW_INTPRESCALE_MASK);
968 writel(int_ctrl, &priv->wr_regs->int_control);
970 cpsw_notice(priv, timer, "Set coalesce to %d usecs.\n", coal_intvl);
971 if (priv->data.dual_emac) {
974 for (i = 0; i < priv->data.slaves; i++) {
975 priv = netdev_priv(priv->slaves[i].ndev);
976 priv->coal_intvl = coal_intvl;
979 priv->coal_intvl = coal_intvl;
985 static int cpsw_get_sset_count(struct net_device *ndev, int sset)
989 return CPSW_STATS_LEN;
995 static void cpsw_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
1000 switch (stringset) {
1002 for (i = 0; i < CPSW_STATS_LEN; i++) {
1003 memcpy(p, cpsw_gstrings_stats[i].stat_string,
1005 p += ETH_GSTRING_LEN;
1011 static void cpsw_get_ethtool_stats(struct net_device *ndev,
1012 struct ethtool_stats *stats, u64 *data)
1014 struct cpsw_priv *priv = netdev_priv(ndev);
1015 struct cpdma_chan_stats rx_stats;
1016 struct cpdma_chan_stats tx_stats;
1021 /* Collect Davinci CPDMA stats for Rx and Tx Channel */
1022 cpdma_chan_get_stats(priv->rxch, &rx_stats);
1023 cpdma_chan_get_stats(priv->txch, &tx_stats);
1025 for (i = 0; i < CPSW_STATS_LEN; i++) {
1026 switch (cpsw_gstrings_stats[i].type) {
1028 val = readl(priv->hw_stats +
1029 cpsw_gstrings_stats[i].stat_offset);
1033 case CPDMA_RX_STATS:
1034 p = (u8 *)&rx_stats +
1035 cpsw_gstrings_stats[i].stat_offset;
1036 data[i] = *(u32 *)p;
1039 case CPDMA_TX_STATS:
1040 p = (u8 *)&tx_stats +
1041 cpsw_gstrings_stats[i].stat_offset;
1042 data[i] = *(u32 *)p;
1048 static int cpsw_common_res_usage_state(struct cpsw_priv *priv)
1051 u32 usage_count = 0;
1053 if (!priv->data.dual_emac)
1056 for (i = 0; i < priv->data.slaves; i++)
1057 if (priv->slaves[i].open_stat)
1063 static inline int cpsw_tx_packet_submit(struct net_device *ndev,
1064 struct cpsw_priv *priv, struct sk_buff *skb)
1066 if (!priv->data.dual_emac)
1067 return cpdma_chan_submit(priv->txch, skb, skb->data,
1070 if (ndev == cpsw_get_slave_ndev(priv, 0))
1071 return cpdma_chan_submit(priv->txch, skb, skb->data,
1074 return cpdma_chan_submit(priv->txch, skb, skb->data,
1078 static inline void cpsw_add_dual_emac_def_ale_entries(
1079 struct cpsw_priv *priv, struct cpsw_slave *slave,
1082 u32 port_mask = 1 << slave_port | 1 << priv->host_port;
1084 if (priv->version == CPSW_VERSION_1)
1085 slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
1087 slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
1088 cpsw_ale_add_vlan(priv->ale, slave->port_vlan, port_mask,
1089 port_mask, port_mask, 0);
1090 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1091 port_mask, ALE_VLAN, slave->port_vlan, 0);
1092 cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1093 priv->host_port, ALE_VLAN, slave->port_vlan);
1096 static void soft_reset_slave(struct cpsw_slave *slave)
1100 snprintf(name, sizeof(name), "slave-%d", slave->slave_num);
1101 soft_reset(name, &slave->sliver->soft_reset);
1104 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
1108 soft_reset_slave(slave);
1110 /* setup priority mapping */
1111 __raw_writel(RX_PRIORITY_MAPPING, &slave->sliver->rx_pri_map);
1113 switch (priv->version) {
1114 case CPSW_VERSION_1:
1115 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
1117 case CPSW_VERSION_2:
1118 case CPSW_VERSION_3:
1119 case CPSW_VERSION_4:
1120 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
1124 /* setup max packet size, and mac address */
1125 __raw_writel(priv->rx_packet_max, &slave->sliver->rx_maxlen);
1126 cpsw_set_slave_mac(slave, priv);
1128 slave->mac_control = 0; /* no link yet */
1130 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1132 if (priv->data.dual_emac)
1133 cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
1135 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1136 1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
1138 slave->phy = phy_connect(priv->ndev, slave->data->phy_id,
1139 &cpsw_adjust_link, slave->data->phy_if);
1140 if (IS_ERR(slave->phy)) {
1141 dev_err(priv->dev, "phy %s not found on slave %d\n",
1142 slave->data->phy_id, slave->slave_num);
1145 dev_info(priv->dev, "phy found : id is : 0x%x\n",
1146 slave->phy->phy_id);
1147 phy_start(slave->phy);
1149 /* Configure GMII_SEL register */
1150 cpsw_phy_sel(&priv->pdev->dev, slave->phy->interface,
1155 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
1157 const int vlan = priv->data.default_vlan;
1158 const int port = priv->host_port;
1161 int unreg_mcast_mask;
1163 reg = (priv->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
1166 writel(vlan, &priv->host_port_regs->port_vlan);
1168 for (i = 0; i < priv->data.slaves; i++)
1169 slave_write(priv->slaves + i, vlan, reg);
1171 if (priv->ndev->flags & IFF_ALLMULTI)
1172 unreg_mcast_mask = ALE_ALL_PORTS;
1174 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1176 cpsw_ale_add_vlan(priv->ale, vlan, ALE_ALL_PORTS << port,
1177 ALE_ALL_PORTS << port, ALE_ALL_PORTS << port,
1178 unreg_mcast_mask << port);
1181 static void cpsw_init_host_port(struct cpsw_priv *priv)
1186 /* soft reset the controller and initialize ale */
1187 soft_reset("cpsw", &priv->regs->soft_reset);
1188 cpsw_ale_start(priv->ale);
1190 /* switch to vlan unaware mode */
1191 cpsw_ale_control_set(priv->ale, priv->host_port, ALE_VLAN_AWARE,
1192 CPSW_ALE_VLAN_AWARE);
1193 control_reg = readl(&priv->regs->control);
1194 control_reg |= CPSW_VLAN_AWARE;
1195 writel(control_reg, &priv->regs->control);
1196 fifo_mode = (priv->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
1197 CPSW_FIFO_NORMAL_MODE;
1198 writel(fifo_mode, &priv->host_port_regs->tx_in_ctl);
1200 /* setup host port priority mapping */
1201 __raw_writel(CPDMA_TX_PRIORITY_MAP,
1202 &priv->host_port_regs->cpdma_tx_pri_map);
1203 __raw_writel(0, &priv->host_port_regs->cpdma_rx_chan_map);
1205 cpsw_ale_control_set(priv->ale, priv->host_port,
1206 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
1208 if (!priv->data.dual_emac) {
1209 cpsw_ale_add_ucast(priv->ale, priv->mac_addr, priv->host_port,
1211 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1212 1 << priv->host_port, 0, 0, ALE_MCAST_FWD_2);
1216 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_priv *priv)
1220 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1224 phy_stop(slave->phy);
1225 phy_disconnect(slave->phy);
1227 cpsw_ale_control_set(priv->ale, slave_port,
1228 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
1231 static int cpsw_ndo_open(struct net_device *ndev)
1233 struct cpsw_priv *priv = netdev_priv(ndev);
1234 struct cpsw_priv *prim_cpsw;
1238 if (!cpsw_common_res_usage_state(priv))
1239 cpsw_intr_disable(priv);
1240 netif_carrier_off(ndev);
1242 pm_runtime_get_sync(&priv->pdev->dev);
1244 reg = priv->version;
1246 dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
1247 CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
1248 CPSW_RTL_VERSION(reg));
1250 /* initialize host and slave ports */
1251 if (!cpsw_common_res_usage_state(priv))
1252 cpsw_init_host_port(priv);
1253 for_each_slave(priv, cpsw_slave_open, priv);
1255 /* Add default VLAN */
1256 if (!priv->data.dual_emac)
1257 cpsw_add_default_vlan(priv);
1259 cpsw_ale_add_vlan(priv->ale, priv->data.default_vlan,
1260 ALE_ALL_PORTS << priv->host_port,
1261 ALE_ALL_PORTS << priv->host_port, 0, 0);
1263 if (!cpsw_common_res_usage_state(priv)) {
1264 /* setup tx dma to fixed prio and zero offset */
1265 cpdma_control_set(priv->dma, CPDMA_TX_PRIO_FIXED, 1);
1266 cpdma_control_set(priv->dma, CPDMA_RX_BUFFER_OFFSET, 0);
1268 /* disable priority elevation */
1269 __raw_writel(0, &priv->regs->ptype);
1271 /* enable statistics collection only on all ports */
1272 __raw_writel(0x7, &priv->regs->stat_port_en);
1274 /* Enable internal fifo flow control */
1275 writel(0x7, &priv->regs->flow_control);
1277 if (WARN_ON(!priv->data.rx_descs))
1278 priv->data.rx_descs = 128;
1280 for (i = 0; i < priv->data.rx_descs; i++) {
1281 struct sk_buff *skb;
1284 skb = __netdev_alloc_skb_ip_align(priv->ndev,
1285 priv->rx_packet_max, GFP_KERNEL);
1288 ret = cpdma_chan_submit(priv->rxch, skb, skb->data,
1289 skb_tailroom(skb), 0);
1295 /* continue even if we didn't manage to submit all
1298 cpsw_info(priv, ifup, "submitted %d rx descriptors\n", i);
1300 if (cpts_register(&priv->pdev->dev, priv->cpts,
1301 priv->data.cpts_clock_mult,
1302 priv->data.cpts_clock_shift))
1303 dev_err(priv->dev, "error registering cpts device\n");
1307 /* Enable Interrupt pacing if configured */
1308 if (priv->coal_intvl != 0) {
1309 struct ethtool_coalesce coal;
1311 coal.rx_coalesce_usecs = (priv->coal_intvl << 4);
1312 cpsw_set_coalesce(ndev, &coal);
1315 napi_enable(&priv->napi);
1316 cpdma_ctlr_start(priv->dma);
1317 cpsw_intr_enable(priv);
1319 prim_cpsw = cpsw_get_slave_priv(priv, 0);
1320 if (prim_cpsw->irq_enabled == false) {
1321 if ((priv == prim_cpsw) || !netif_running(prim_cpsw->ndev)) {
1322 prim_cpsw->irq_enabled = true;
1323 cpsw_enable_irq(prim_cpsw);
1327 if (priv->data.dual_emac)
1328 priv->slaves[priv->emac_port].open_stat = true;
1332 cpdma_ctlr_stop(priv->dma);
1333 for_each_slave(priv, cpsw_slave_stop, priv);
1334 pm_runtime_put_sync(&priv->pdev->dev);
1335 netif_carrier_off(priv->ndev);
1339 static int cpsw_ndo_stop(struct net_device *ndev)
1341 struct cpsw_priv *priv = netdev_priv(ndev);
1343 cpsw_info(priv, ifdown, "shutting down cpsw device\n");
1344 netif_stop_queue(priv->ndev);
1345 napi_disable(&priv->napi);
1346 netif_carrier_off(priv->ndev);
1348 if (cpsw_common_res_usage_state(priv) <= 1) {
1349 cpts_unregister(priv->cpts);
1350 cpsw_intr_disable(priv);
1351 cpdma_ctlr_int_ctrl(priv->dma, false);
1352 cpdma_ctlr_stop(priv->dma);
1353 cpsw_ale_stop(priv->ale);
1355 for_each_slave(priv, cpsw_slave_stop, priv);
1356 pm_runtime_put_sync(&priv->pdev->dev);
1357 if (priv->data.dual_emac)
1358 priv->slaves[priv->emac_port].open_stat = false;
1362 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
1363 struct net_device *ndev)
1365 struct cpsw_priv *priv = netdev_priv(ndev);
1368 ndev->trans_start = jiffies;
1370 if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
1371 cpsw_err(priv, tx_err, "packet pad failed\n");
1372 ndev->stats.tx_dropped++;
1373 return NETDEV_TX_OK;
1376 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
1377 priv->cpts->tx_enable)
1378 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
1380 skb_tx_timestamp(skb);
1382 ret = cpsw_tx_packet_submit(ndev, priv, skb);
1383 if (unlikely(ret != 0)) {
1384 cpsw_err(priv, tx_err, "desc submit failed\n");
1388 /* If there is no more tx desc left free then we need to
1389 * tell the kernel to stop sending us tx frames.
1391 if (unlikely(!cpdma_check_free_tx_desc(priv->txch)))
1392 netif_stop_queue(ndev);
1394 return NETDEV_TX_OK;
1396 ndev->stats.tx_dropped++;
1397 netif_stop_queue(ndev);
1398 return NETDEV_TX_BUSY;
1401 #ifdef CONFIG_TI_CPTS
1403 static void cpsw_hwtstamp_v1(struct cpsw_priv *priv)
1405 struct cpsw_slave *slave = &priv->slaves[priv->data.active_slave];
1408 if (!priv->cpts->tx_enable && !priv->cpts->rx_enable) {
1409 slave_write(slave, 0, CPSW1_TS_CTL);
1413 seq_id = (30 << CPSW_V1_SEQ_ID_OFS_SHIFT) | ETH_P_1588;
1414 ts_en = EVENT_MSG_BITS << CPSW_V1_MSG_TYPE_OFS;
1416 if (priv->cpts->tx_enable)
1417 ts_en |= CPSW_V1_TS_TX_EN;
1419 if (priv->cpts->rx_enable)
1420 ts_en |= CPSW_V1_TS_RX_EN;
1422 slave_write(slave, ts_en, CPSW1_TS_CTL);
1423 slave_write(slave, seq_id, CPSW1_TS_SEQ_LTYPE);
1426 static void cpsw_hwtstamp_v2(struct cpsw_priv *priv)
1428 struct cpsw_slave *slave;
1431 if (priv->data.dual_emac)
1432 slave = &priv->slaves[priv->emac_port];
1434 slave = &priv->slaves[priv->data.active_slave];
1436 ctrl = slave_read(slave, CPSW2_CONTROL);
1437 switch (priv->version) {
1438 case CPSW_VERSION_2:
1439 ctrl &= ~CTRL_V2_ALL_TS_MASK;
1441 if (priv->cpts->tx_enable)
1442 ctrl |= CTRL_V2_TX_TS_BITS;
1444 if (priv->cpts->rx_enable)
1445 ctrl |= CTRL_V2_RX_TS_BITS;
1447 case CPSW_VERSION_3:
1449 ctrl &= ~CTRL_V3_ALL_TS_MASK;
1451 if (priv->cpts->tx_enable)
1452 ctrl |= CTRL_V3_TX_TS_BITS;
1454 if (priv->cpts->rx_enable)
1455 ctrl |= CTRL_V3_RX_TS_BITS;
1459 mtype = (30 << TS_SEQ_ID_OFFSET_SHIFT) | EVENT_MSG_BITS;
1461 slave_write(slave, mtype, CPSW2_TS_SEQ_MTYPE);
1462 slave_write(slave, ctrl, CPSW2_CONTROL);
1463 __raw_writel(ETH_P_1588, &priv->regs->ts_ltype);
1466 static int cpsw_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
1468 struct cpsw_priv *priv = netdev_priv(dev);
1469 struct cpts *cpts = priv->cpts;
1470 struct hwtstamp_config cfg;
1472 if (priv->version != CPSW_VERSION_1 &&
1473 priv->version != CPSW_VERSION_2 &&
1474 priv->version != CPSW_VERSION_3)
1477 if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
1480 /* reserved for future extensions */
1484 if (cfg.tx_type != HWTSTAMP_TX_OFF && cfg.tx_type != HWTSTAMP_TX_ON)
1487 switch (cfg.rx_filter) {
1488 case HWTSTAMP_FILTER_NONE:
1489 cpts->rx_enable = 0;
1491 case HWTSTAMP_FILTER_ALL:
1492 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
1493 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
1494 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
1496 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
1497 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
1498 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
1499 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
1500 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
1501 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
1502 case HWTSTAMP_FILTER_PTP_V2_EVENT:
1503 case HWTSTAMP_FILTER_PTP_V2_SYNC:
1504 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
1505 cpts->rx_enable = 1;
1506 cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
1512 cpts->tx_enable = cfg.tx_type == HWTSTAMP_TX_ON;
1514 switch (priv->version) {
1515 case CPSW_VERSION_1:
1516 cpsw_hwtstamp_v1(priv);
1518 case CPSW_VERSION_2:
1519 case CPSW_VERSION_3:
1520 cpsw_hwtstamp_v2(priv);
1526 return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1529 static int cpsw_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
1531 struct cpsw_priv *priv = netdev_priv(dev);
1532 struct cpts *cpts = priv->cpts;
1533 struct hwtstamp_config cfg;
1535 if (priv->version != CPSW_VERSION_1 &&
1536 priv->version != CPSW_VERSION_2 &&
1537 priv->version != CPSW_VERSION_3)
1541 cfg.tx_type = cpts->tx_enable ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF;
1542 cfg.rx_filter = (cpts->rx_enable ?
1543 HWTSTAMP_FILTER_PTP_V2_EVENT : HWTSTAMP_FILTER_NONE);
1545 return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1548 #endif /*CONFIG_TI_CPTS*/
1550 static int cpsw_ndo_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
1552 struct cpsw_priv *priv = netdev_priv(dev);
1553 int slave_no = cpsw_slave_index(priv);
1555 if (!netif_running(dev))
1559 #ifdef CONFIG_TI_CPTS
1561 return cpsw_hwtstamp_set(dev, req);
1563 return cpsw_hwtstamp_get(dev, req);
1567 if (!priv->slaves[slave_no].phy)
1569 return phy_mii_ioctl(priv->slaves[slave_no].phy, req, cmd);
1572 static void cpsw_ndo_tx_timeout(struct net_device *ndev)
1574 struct cpsw_priv *priv = netdev_priv(ndev);
1576 cpsw_err(priv, tx_err, "transmit timeout, restarting dma\n");
1577 ndev->stats.tx_errors++;
1578 cpsw_intr_disable(priv);
1579 cpdma_ctlr_int_ctrl(priv->dma, false);
1580 cpdma_chan_stop(priv->txch);
1581 cpdma_chan_start(priv->txch);
1582 cpdma_ctlr_int_ctrl(priv->dma, true);
1583 cpsw_intr_enable(priv);
1586 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
1588 struct cpsw_priv *priv = netdev_priv(ndev);
1589 struct sockaddr *addr = (struct sockaddr *)p;
1593 if (!is_valid_ether_addr(addr->sa_data))
1594 return -EADDRNOTAVAIL;
1596 if (priv->data.dual_emac) {
1597 vid = priv->slaves[priv->emac_port].port_vlan;
1601 cpsw_ale_del_ucast(priv->ale, priv->mac_addr, priv->host_port,
1603 cpsw_ale_add_ucast(priv->ale, addr->sa_data, priv->host_port,
1606 memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
1607 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
1608 for_each_slave(priv, cpsw_set_slave_mac, priv);
1613 #ifdef CONFIG_NET_POLL_CONTROLLER
1614 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1616 struct cpsw_priv *priv = netdev_priv(ndev);
1618 cpsw_intr_disable(priv);
1619 cpdma_ctlr_int_ctrl(priv->dma, false);
1620 cpsw_interrupt(ndev->irq, priv);
1621 cpdma_ctlr_int_ctrl(priv->dma, true);
1622 cpsw_intr_enable(priv);
1626 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
1630 int unreg_mcast_mask;
1632 if (priv->ndev->flags & IFF_ALLMULTI)
1633 unreg_mcast_mask = ALE_ALL_PORTS;
1635 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1637 ret = cpsw_ale_add_vlan(priv->ale, vid,
1638 ALE_ALL_PORTS << priv->host_port,
1639 0, ALE_ALL_PORTS << priv->host_port,
1640 unreg_mcast_mask << priv->host_port);
1644 ret = cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1645 priv->host_port, ALE_VLAN, vid);
1649 ret = cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1650 ALE_ALL_PORTS << priv->host_port,
1653 goto clean_vlan_ucast;
1657 cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1658 priv->host_port, ALE_VLAN, vid);
1660 cpsw_ale_del_vlan(priv->ale, vid, 0);
1664 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1665 __be16 proto, u16 vid)
1667 struct cpsw_priv *priv = netdev_priv(ndev);
1669 if (vid == priv->data.default_vlan)
1672 dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1673 return cpsw_add_vlan_ale_entry(priv, vid);
1676 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1677 __be16 proto, u16 vid)
1679 struct cpsw_priv *priv = netdev_priv(ndev);
1682 if (vid == priv->data.default_vlan)
1685 dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1686 ret = cpsw_ale_del_vlan(priv->ale, vid, 0);
1690 ret = cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1691 priv->host_port, ALE_VLAN, vid);
1695 return cpsw_ale_del_mcast(priv->ale, priv->ndev->broadcast,
1699 static const struct net_device_ops cpsw_netdev_ops = {
1700 .ndo_open = cpsw_ndo_open,
1701 .ndo_stop = cpsw_ndo_stop,
1702 .ndo_start_xmit = cpsw_ndo_start_xmit,
1703 .ndo_set_mac_address = cpsw_ndo_set_mac_address,
1704 .ndo_do_ioctl = cpsw_ndo_ioctl,
1705 .ndo_validate_addr = eth_validate_addr,
1706 .ndo_change_mtu = eth_change_mtu,
1707 .ndo_tx_timeout = cpsw_ndo_tx_timeout,
1708 .ndo_set_rx_mode = cpsw_ndo_set_rx_mode,
1709 #ifdef CONFIG_NET_POLL_CONTROLLER
1710 .ndo_poll_controller = cpsw_ndo_poll_controller,
1712 .ndo_vlan_rx_add_vid = cpsw_ndo_vlan_rx_add_vid,
1713 .ndo_vlan_rx_kill_vid = cpsw_ndo_vlan_rx_kill_vid,
1716 static int cpsw_get_regs_len(struct net_device *ndev)
1718 struct cpsw_priv *priv = netdev_priv(ndev);
1720 return priv->data.ale_entries * ALE_ENTRY_WORDS * sizeof(u32);
1723 static void cpsw_get_regs(struct net_device *ndev,
1724 struct ethtool_regs *regs, void *p)
1726 struct cpsw_priv *priv = netdev_priv(ndev);
1729 /* update CPSW IP version */
1730 regs->version = priv->version;
1732 cpsw_ale_dump(priv->ale, reg);
1735 static void cpsw_get_drvinfo(struct net_device *ndev,
1736 struct ethtool_drvinfo *info)
1738 struct cpsw_priv *priv = netdev_priv(ndev);
1740 strlcpy(info->driver, "cpsw", sizeof(info->driver));
1741 strlcpy(info->version, "1.0", sizeof(info->version));
1742 strlcpy(info->bus_info, priv->pdev->name, sizeof(info->bus_info));
1743 info->regdump_len = cpsw_get_regs_len(ndev);
1746 static u32 cpsw_get_msglevel(struct net_device *ndev)
1748 struct cpsw_priv *priv = netdev_priv(ndev);
1749 return priv->msg_enable;
1752 static void cpsw_set_msglevel(struct net_device *ndev, u32 value)
1754 struct cpsw_priv *priv = netdev_priv(ndev);
1755 priv->msg_enable = value;
1758 static int cpsw_get_ts_info(struct net_device *ndev,
1759 struct ethtool_ts_info *info)
1761 #ifdef CONFIG_TI_CPTS
1762 struct cpsw_priv *priv = netdev_priv(ndev);
1764 info->so_timestamping =
1765 SOF_TIMESTAMPING_TX_HARDWARE |
1766 SOF_TIMESTAMPING_TX_SOFTWARE |
1767 SOF_TIMESTAMPING_RX_HARDWARE |
1768 SOF_TIMESTAMPING_RX_SOFTWARE |
1769 SOF_TIMESTAMPING_SOFTWARE |
1770 SOF_TIMESTAMPING_RAW_HARDWARE;
1771 info->phc_index = priv->cpts->phc_index;
1773 (1 << HWTSTAMP_TX_OFF) |
1774 (1 << HWTSTAMP_TX_ON);
1776 (1 << HWTSTAMP_FILTER_NONE) |
1777 (1 << HWTSTAMP_FILTER_PTP_V2_EVENT);
1779 info->so_timestamping =
1780 SOF_TIMESTAMPING_TX_SOFTWARE |
1781 SOF_TIMESTAMPING_RX_SOFTWARE |
1782 SOF_TIMESTAMPING_SOFTWARE;
1783 info->phc_index = -1;
1785 info->rx_filters = 0;
1790 static int cpsw_get_settings(struct net_device *ndev,
1791 struct ethtool_cmd *ecmd)
1793 struct cpsw_priv *priv = netdev_priv(ndev);
1794 int slave_no = cpsw_slave_index(priv);
1796 if (priv->slaves[slave_no].phy)
1797 return phy_ethtool_gset(priv->slaves[slave_no].phy, ecmd);
1802 static int cpsw_set_settings(struct net_device *ndev, struct ethtool_cmd *ecmd)
1804 struct cpsw_priv *priv = netdev_priv(ndev);
1805 int slave_no = cpsw_slave_index(priv);
1807 if (priv->slaves[slave_no].phy)
1808 return phy_ethtool_sset(priv->slaves[slave_no].phy, ecmd);
1813 static void cpsw_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1815 struct cpsw_priv *priv = netdev_priv(ndev);
1816 int slave_no = cpsw_slave_index(priv);
1821 if (priv->slaves[slave_no].phy)
1822 phy_ethtool_get_wol(priv->slaves[slave_no].phy, wol);
1825 static int cpsw_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1827 struct cpsw_priv *priv = netdev_priv(ndev);
1828 int slave_no = cpsw_slave_index(priv);
1830 if (priv->slaves[slave_no].phy)
1831 return phy_ethtool_set_wol(priv->slaves[slave_no].phy, wol);
1836 static void cpsw_get_pauseparam(struct net_device *ndev,
1837 struct ethtool_pauseparam *pause)
1839 struct cpsw_priv *priv = netdev_priv(ndev);
1841 pause->autoneg = AUTONEG_DISABLE;
1842 pause->rx_pause = priv->rx_pause ? true : false;
1843 pause->tx_pause = priv->tx_pause ? true : false;
1846 static int cpsw_set_pauseparam(struct net_device *ndev,
1847 struct ethtool_pauseparam *pause)
1849 struct cpsw_priv *priv = netdev_priv(ndev);
1852 priv->rx_pause = pause->rx_pause ? true : false;
1853 priv->tx_pause = pause->tx_pause ? true : false;
1855 for_each_slave(priv, _cpsw_adjust_link, priv, &link);
1860 static const struct ethtool_ops cpsw_ethtool_ops = {
1861 .get_drvinfo = cpsw_get_drvinfo,
1862 .get_msglevel = cpsw_get_msglevel,
1863 .set_msglevel = cpsw_set_msglevel,
1864 .get_link = ethtool_op_get_link,
1865 .get_ts_info = cpsw_get_ts_info,
1866 .get_settings = cpsw_get_settings,
1867 .set_settings = cpsw_set_settings,
1868 .get_coalesce = cpsw_get_coalesce,
1869 .set_coalesce = cpsw_set_coalesce,
1870 .get_sset_count = cpsw_get_sset_count,
1871 .get_strings = cpsw_get_strings,
1872 .get_ethtool_stats = cpsw_get_ethtool_stats,
1873 .get_pauseparam = cpsw_get_pauseparam,
1874 .set_pauseparam = cpsw_set_pauseparam,
1875 .get_wol = cpsw_get_wol,
1876 .set_wol = cpsw_set_wol,
1877 .get_regs_len = cpsw_get_regs_len,
1878 .get_regs = cpsw_get_regs,
1881 static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv,
1882 u32 slave_reg_ofs, u32 sliver_reg_ofs)
1884 void __iomem *regs = priv->regs;
1885 int slave_num = slave->slave_num;
1886 struct cpsw_slave_data *data = priv->data.slave_data + slave_num;
1889 slave->regs = regs + slave_reg_ofs;
1890 slave->sliver = regs + sliver_reg_ofs;
1891 slave->port_vlan = data->dual_emac_res_vlan;
1894 #define AM33XX_CTRL_MAC_LO_REG(id) (0x630 + 0x8 * id)
1895 #define AM33XX_CTRL_MAC_HI_REG(id) (0x630 + 0x8 * id + 0x4)
1897 static int cpsw_am33xx_cm_get_macid(struct device *dev, int slave,
1902 struct regmap *syscon;
1904 syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon");
1905 if (IS_ERR(syscon)) {
1906 if (PTR_ERR(syscon) == -ENODEV)
1908 return PTR_ERR(syscon);
1911 regmap_read(syscon, AM33XX_CTRL_MAC_LO_REG(slave), &macid_lo);
1912 regmap_read(syscon, AM33XX_CTRL_MAC_HI_REG(slave), &macid_hi);
1914 mac_addr[5] = (macid_lo >> 8) & 0xff;
1915 mac_addr[4] = macid_lo & 0xff;
1916 mac_addr[3] = (macid_hi >> 24) & 0xff;
1917 mac_addr[2] = (macid_hi >> 16) & 0xff;
1918 mac_addr[1] = (macid_hi >> 8) & 0xff;
1919 mac_addr[0] = macid_hi & 0xff;
1924 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1925 struct platform_device *pdev)
1927 struct device_node *node = pdev->dev.of_node;
1928 struct device_node *slave_node;
1935 if (of_property_read_u32(node, "slaves", &prop)) {
1936 dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1939 data->slaves = prop;
1941 if (of_property_read_u32(node, "active_slave", &prop)) {
1942 dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1945 data->active_slave = prop;
1947 if (of_property_read_u32(node, "cpts_clock_mult", &prop)) {
1948 dev_err(&pdev->dev, "Missing cpts_clock_mult property in the DT.\n");
1951 data->cpts_clock_mult = prop;
1953 if (of_property_read_u32(node, "cpts_clock_shift", &prop)) {
1954 dev_err(&pdev->dev, "Missing cpts_clock_shift property in the DT.\n");
1957 data->cpts_clock_shift = prop;
1959 data->slave_data = devm_kzalloc(&pdev->dev, data->slaves
1960 * sizeof(struct cpsw_slave_data),
1962 if (!data->slave_data)
1965 if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1966 dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1969 data->channels = prop;
1971 if (of_property_read_u32(node, "ale_entries", &prop)) {
1972 dev_err(&pdev->dev, "Missing ale_entries property in the DT.\n");
1975 data->ale_entries = prop;
1977 if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1978 dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");
1981 data->bd_ram_size = prop;
1983 if (of_property_read_u32(node, "rx_descs", &prop)) {
1984 dev_err(&pdev->dev, "Missing rx_descs property in the DT.\n");
1987 data->rx_descs = prop;
1989 if (of_property_read_u32(node, "mac_control", &prop)) {
1990 dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
1993 data->mac_control = prop;
1995 if (of_property_read_bool(node, "dual_emac"))
1996 data->dual_emac = 1;
1999 * Populate all the child nodes here...
2001 ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
2002 /* We do not want to force this, as in some cases may not have child */
2004 dev_warn(&pdev->dev, "Doesn't have any child node\n");
2006 for_each_child_of_node(node, slave_node) {
2007 struct cpsw_slave_data *slave_data = data->slave_data + i;
2008 const void *mac_addr = NULL;
2012 struct device_node *mdio_node;
2013 struct platform_device *mdio;
2015 /* This is no slave child node, continue */
2016 if (strcmp(slave_node->name, "slave"))
2019 parp = of_get_property(slave_node, "phy_id", &lenp);
2020 if ((parp == NULL) || (lenp != (sizeof(void *) * 2))) {
2021 dev_err(&pdev->dev, "Missing slave[%d] phy_id property\n", i);
2024 mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
2025 phyid = be32_to_cpup(parp+1);
2026 mdio = of_find_device_by_node(mdio_node);
2027 of_node_put(mdio_node);
2029 dev_err(&pdev->dev, "Missing mdio platform device\n");
2032 snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
2033 PHY_ID_FMT, mdio->name, phyid);
2035 slave_data->phy_if = of_get_phy_mode(slave_node);
2036 if (slave_data->phy_if < 0) {
2037 dev_err(&pdev->dev, "Missing or malformed slave[%d] phy-mode property\n",
2039 return slave_data->phy_if;
2043 mac_addr = of_get_mac_address(slave_node);
2045 memcpy(slave_data->mac_addr, mac_addr, ETH_ALEN);
2047 if (of_machine_is_compatible("ti,am33xx")) {
2048 ret = cpsw_am33xx_cm_get_macid(&pdev->dev, i,
2049 slave_data->mac_addr);
2054 if (data->dual_emac) {
2055 if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
2057 dev_err(&pdev->dev, "Missing dual_emac_res_vlan in DT.\n");
2058 slave_data->dual_emac_res_vlan = i+1;
2059 dev_err(&pdev->dev, "Using %d as Reserved VLAN for %d slave\n",
2060 slave_data->dual_emac_res_vlan, i);
2062 slave_data->dual_emac_res_vlan = prop;
2067 if (i == data->slaves)
2074 static int cpsw_probe_dual_emac(struct platform_device *pdev,
2075 struct cpsw_priv *priv)
2077 struct cpsw_platform_data *data = &priv->data;
2078 struct net_device *ndev;
2079 struct cpsw_priv *priv_sl2;
2082 ndev = alloc_etherdev(sizeof(struct cpsw_priv));
2084 dev_err(&pdev->dev, "cpsw: error allocating net_device\n");
2088 priv_sl2 = netdev_priv(ndev);
2089 spin_lock_init(&priv_sl2->lock);
2090 priv_sl2->data = *data;
2091 priv_sl2->pdev = pdev;
2092 priv_sl2->ndev = ndev;
2093 priv_sl2->dev = &ndev->dev;
2094 priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
2095 priv_sl2->rx_packet_max = max(rx_packet_max, 128);
2097 if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
2098 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
2100 dev_info(&pdev->dev, "cpsw: Detected MACID = %pM\n", priv_sl2->mac_addr);
2102 random_ether_addr(priv_sl2->mac_addr);
2103 dev_info(&pdev->dev, "cpsw: Random MACID = %pM\n", priv_sl2->mac_addr);
2105 memcpy(ndev->dev_addr, priv_sl2->mac_addr, ETH_ALEN);
2107 priv_sl2->slaves = priv->slaves;
2108 priv_sl2->clk = priv->clk;
2110 priv_sl2->coal_intvl = 0;
2111 priv_sl2->bus_freq_mhz = priv->bus_freq_mhz;
2113 priv_sl2->regs = priv->regs;
2114 priv_sl2->host_port = priv->host_port;
2115 priv_sl2->host_port_regs = priv->host_port_regs;
2116 priv_sl2->wr_regs = priv->wr_regs;
2117 priv_sl2->hw_stats = priv->hw_stats;
2118 priv_sl2->dma = priv->dma;
2119 priv_sl2->txch = priv->txch;
2120 priv_sl2->rxch = priv->rxch;
2121 priv_sl2->ale = priv->ale;
2122 priv_sl2->emac_port = 1;
2123 priv->slaves[1].ndev = ndev;
2124 priv_sl2->cpts = priv->cpts;
2125 priv_sl2->version = priv->version;
2127 for (i = 0; i < priv->num_irqs; i++) {
2128 priv_sl2->irqs_table[i] = priv->irqs_table[i];
2129 priv_sl2->num_irqs = priv->num_irqs;
2131 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2133 ndev->netdev_ops = &cpsw_netdev_ops;
2134 ndev->ethtool_ops = &cpsw_ethtool_ops;
2135 netif_napi_add(ndev, &priv_sl2->napi, cpsw_poll, CPSW_POLL_WEIGHT);
2137 /* register the network device */
2138 SET_NETDEV_DEV(ndev, &pdev->dev);
2139 ret = register_netdev(ndev);
2141 dev_err(&pdev->dev, "cpsw: error registering net device\n");
2149 static int cpsw_probe(struct platform_device *pdev)
2151 struct cpsw_platform_data *data;
2152 struct net_device *ndev;
2153 struct cpsw_priv *priv;
2154 struct cpdma_params dma_params;
2155 struct cpsw_ale_params ale_params;
2156 void __iomem *ss_regs;
2157 struct resource *res, *ss_res;
2158 u32 slave_offset, sliver_offset, slave_size;
2159 int ret = 0, i, k = 0;
2161 ndev = alloc_etherdev(sizeof(struct cpsw_priv));
2163 dev_err(&pdev->dev, "error allocating net_device\n");
2167 platform_set_drvdata(pdev, ndev);
2168 priv = netdev_priv(ndev);
2169 spin_lock_init(&priv->lock);
2172 priv->dev = &ndev->dev;
2173 priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
2174 priv->rx_packet_max = max(rx_packet_max, 128);
2175 priv->cpts = devm_kzalloc(&pdev->dev, sizeof(struct cpts), GFP_KERNEL);
2176 priv->irq_enabled = true;
2178 dev_err(&pdev->dev, "error allocating cpts\n");
2180 goto clean_ndev_ret;
2184 * This may be required here for child devices.
2186 pm_runtime_enable(&pdev->dev);
2188 /* Select default pin state */
2189 pinctrl_pm_select_default_state(&pdev->dev);
2191 if (cpsw_probe_dt(&priv->data, pdev)) {
2192 dev_err(&pdev->dev, "cpsw: platform data missing\n");
2194 goto clean_runtime_disable_ret;
2198 if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
2199 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
2200 dev_info(&pdev->dev, "Detected MACID = %pM\n", priv->mac_addr);
2202 eth_random_addr(priv->mac_addr);
2203 dev_info(&pdev->dev, "Random MACID = %pM\n", priv->mac_addr);
2206 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
2208 priv->slaves = devm_kzalloc(&pdev->dev,
2209 sizeof(struct cpsw_slave) * data->slaves,
2211 if (!priv->slaves) {
2213 goto clean_runtime_disable_ret;
2215 for (i = 0; i < data->slaves; i++)
2216 priv->slaves[i].slave_num = i;
2218 priv->slaves[0].ndev = ndev;
2219 priv->emac_port = 0;
2221 priv->clk = devm_clk_get(&pdev->dev, "fck");
2222 if (IS_ERR(priv->clk)) {
2223 dev_err(priv->dev, "fck is not found\n");
2225 goto clean_runtime_disable_ret;
2227 priv->coal_intvl = 0;
2228 priv->bus_freq_mhz = clk_get_rate(priv->clk) / 1000000;
2230 ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2231 ss_regs = devm_ioremap_resource(&pdev->dev, ss_res);
2232 if (IS_ERR(ss_regs)) {
2233 ret = PTR_ERR(ss_regs);
2234 goto clean_runtime_disable_ret;
2236 priv->regs = ss_regs;
2237 priv->host_port = HOST_PORT_NUM;
2239 /* Need to enable clocks with runtime PM api to access module
2242 pm_runtime_get_sync(&pdev->dev);
2243 priv->version = readl(&priv->regs->id_ver);
2244 pm_runtime_put_sync(&pdev->dev);
2246 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2247 priv->wr_regs = devm_ioremap_resource(&pdev->dev, res);
2248 if (IS_ERR(priv->wr_regs)) {
2249 ret = PTR_ERR(priv->wr_regs);
2250 goto clean_runtime_disable_ret;
2253 memset(&dma_params, 0, sizeof(dma_params));
2254 memset(&ale_params, 0, sizeof(ale_params));
2256 switch (priv->version) {
2257 case CPSW_VERSION_1:
2258 priv->host_port_regs = ss_regs + CPSW1_HOST_PORT_OFFSET;
2259 priv->cpts->reg = ss_regs + CPSW1_CPTS_OFFSET;
2260 priv->hw_stats = ss_regs + CPSW1_HW_STATS;
2261 dma_params.dmaregs = ss_regs + CPSW1_CPDMA_OFFSET;
2262 dma_params.txhdp = ss_regs + CPSW1_STATERAM_OFFSET;
2263 ale_params.ale_regs = ss_regs + CPSW1_ALE_OFFSET;
2264 slave_offset = CPSW1_SLAVE_OFFSET;
2265 slave_size = CPSW1_SLAVE_SIZE;
2266 sliver_offset = CPSW1_SLIVER_OFFSET;
2267 dma_params.desc_mem_phys = 0;
2269 case CPSW_VERSION_2:
2270 case CPSW_VERSION_3:
2271 case CPSW_VERSION_4:
2272 priv->host_port_regs = ss_regs + CPSW2_HOST_PORT_OFFSET;
2273 priv->cpts->reg = ss_regs + CPSW2_CPTS_OFFSET;
2274 priv->hw_stats = ss_regs + CPSW2_HW_STATS;
2275 dma_params.dmaregs = ss_regs + CPSW2_CPDMA_OFFSET;
2276 dma_params.txhdp = ss_regs + CPSW2_STATERAM_OFFSET;
2277 ale_params.ale_regs = ss_regs + CPSW2_ALE_OFFSET;
2278 slave_offset = CPSW2_SLAVE_OFFSET;
2279 slave_size = CPSW2_SLAVE_SIZE;
2280 sliver_offset = CPSW2_SLIVER_OFFSET;
2281 dma_params.desc_mem_phys =
2282 (u32 __force) ss_res->start + CPSW2_BD_OFFSET;
2285 dev_err(priv->dev, "unknown version 0x%08x\n", priv->version);
2287 goto clean_runtime_disable_ret;
2289 for (i = 0; i < priv->data.slaves; i++) {
2290 struct cpsw_slave *slave = &priv->slaves[i];
2291 cpsw_slave_init(slave, priv, slave_offset, sliver_offset);
2292 slave_offset += slave_size;
2293 sliver_offset += SLIVER_SIZE;
2296 dma_params.dev = &pdev->dev;
2297 dma_params.rxthresh = dma_params.dmaregs + CPDMA_RXTHRESH;
2298 dma_params.rxfree = dma_params.dmaregs + CPDMA_RXFREE;
2299 dma_params.rxhdp = dma_params.txhdp + CPDMA_RXHDP;
2300 dma_params.txcp = dma_params.txhdp + CPDMA_TXCP;
2301 dma_params.rxcp = dma_params.txhdp + CPDMA_RXCP;
2303 dma_params.num_chan = data->channels;
2304 dma_params.has_soft_reset = true;
2305 dma_params.min_packet_size = CPSW_MIN_PACKET_SIZE;
2306 dma_params.desc_mem_size = data->bd_ram_size;
2307 dma_params.desc_align = 16;
2308 dma_params.has_ext_regs = true;
2309 dma_params.desc_hw_addr = dma_params.desc_mem_phys;
2311 priv->dma = cpdma_ctlr_create(&dma_params);
2313 dev_err(priv->dev, "error initializing dma\n");
2315 goto clean_runtime_disable_ret;
2318 priv->txch = cpdma_chan_create(priv->dma, tx_chan_num(0),
2320 priv->rxch = cpdma_chan_create(priv->dma, rx_chan_num(0),
2323 if (WARN_ON(!priv->txch || !priv->rxch)) {
2324 dev_err(priv->dev, "error initializing dma channels\n");
2329 ale_params.dev = &ndev->dev;
2330 ale_params.ale_ageout = ale_ageout;
2331 ale_params.ale_entries = data->ale_entries;
2332 ale_params.ale_ports = data->slaves;
2334 priv->ale = cpsw_ale_create(&ale_params);
2336 dev_err(priv->dev, "error initializing ale engine\n");
2341 ndev->irq = platform_get_irq(pdev, 0);
2342 if (ndev->irq < 0) {
2343 dev_err(priv->dev, "error getting irq resource\n");
2348 while ((res = platform_get_resource(priv->pdev, IORESOURCE_IRQ, k))) {
2349 if (k >= ARRAY_SIZE(priv->irqs_table)) {
2354 ret = devm_request_irq(&pdev->dev, res->start, cpsw_interrupt,
2355 0, dev_name(&pdev->dev), priv);
2357 dev_err(priv->dev, "error attaching irq (%d)\n", ret);
2361 priv->irqs_table[k] = res->start;
2367 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2369 ndev->netdev_ops = &cpsw_netdev_ops;
2370 ndev->ethtool_ops = &cpsw_ethtool_ops;
2371 netif_napi_add(ndev, &priv->napi, cpsw_poll, CPSW_POLL_WEIGHT);
2373 /* register the network device */
2374 SET_NETDEV_DEV(ndev, &pdev->dev);
2375 ret = register_netdev(ndev);
2377 dev_err(priv->dev, "error registering net device\n");
2382 cpsw_notice(priv, probe, "initialized device (regs %pa, irq %d)\n",
2383 &ss_res->start, ndev->irq);
2385 if (priv->data.dual_emac) {
2386 ret = cpsw_probe_dual_emac(pdev, priv);
2388 cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
2396 cpsw_ale_destroy(priv->ale);
2398 cpdma_chan_destroy(priv->txch);
2399 cpdma_chan_destroy(priv->rxch);
2400 cpdma_ctlr_destroy(priv->dma);
2401 clean_runtime_disable_ret:
2402 pm_runtime_disable(&pdev->dev);
2404 free_netdev(priv->ndev);
2408 static int cpsw_remove_child_device(struct device *dev, void *c)
2410 struct platform_device *pdev = to_platform_device(dev);
2412 of_device_unregister(pdev);
2417 static int cpsw_remove(struct platform_device *pdev)
2419 struct net_device *ndev = platform_get_drvdata(pdev);
2420 struct cpsw_priv *priv = netdev_priv(ndev);
2422 if (priv->data.dual_emac)
2423 unregister_netdev(cpsw_get_slave_ndev(priv, 1));
2424 unregister_netdev(ndev);
2426 cpsw_ale_destroy(priv->ale);
2427 cpdma_chan_destroy(priv->txch);
2428 cpdma_chan_destroy(priv->rxch);
2429 cpdma_ctlr_destroy(priv->dma);
2430 pm_runtime_disable(&pdev->dev);
2431 device_for_each_child(&pdev->dev, NULL, cpsw_remove_child_device);
2432 if (priv->data.dual_emac)
2433 free_netdev(cpsw_get_slave_ndev(priv, 1));
2438 static int cpsw_suspend(struct device *dev)
2440 struct platform_device *pdev = to_platform_device(dev);
2441 struct net_device *ndev = platform_get_drvdata(pdev);
2442 struct cpsw_priv *priv = netdev_priv(ndev);
2444 if (priv->data.dual_emac) {
2447 for (i = 0; i < priv->data.slaves; i++) {
2448 if (netif_running(priv->slaves[i].ndev))
2449 cpsw_ndo_stop(priv->slaves[i].ndev);
2450 soft_reset_slave(priv->slaves + i);
2453 if (netif_running(ndev))
2454 cpsw_ndo_stop(ndev);
2455 for_each_slave(priv, soft_reset_slave);
2458 pm_runtime_put_sync(&pdev->dev);
2460 /* Select sleep pin state */
2461 pinctrl_pm_select_sleep_state(&pdev->dev);
2466 static int cpsw_resume(struct device *dev)
2468 struct platform_device *pdev = to_platform_device(dev);
2469 struct net_device *ndev = platform_get_drvdata(pdev);
2470 struct cpsw_priv *priv = netdev_priv(ndev);
2472 pm_runtime_get_sync(&pdev->dev);
2474 /* Select default pin state */
2475 pinctrl_pm_select_default_state(&pdev->dev);
2477 if (priv->data.dual_emac) {
2480 for (i = 0; i < priv->data.slaves; i++) {
2481 if (netif_running(priv->slaves[i].ndev))
2482 cpsw_ndo_open(priv->slaves[i].ndev);
2485 if (netif_running(ndev))
2486 cpsw_ndo_open(ndev);
2491 static const struct dev_pm_ops cpsw_pm_ops = {
2492 .suspend = cpsw_suspend,
2493 .resume = cpsw_resume,
2496 static const struct of_device_id cpsw_of_mtable[] = {
2497 { .compatible = "ti,cpsw", },
2500 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
2502 static struct platform_driver cpsw_driver = {
2506 .of_match_table = cpsw_of_mtable,
2508 .probe = cpsw_probe,
2509 .remove = cpsw_remove,
2512 static int __init cpsw_init(void)
2514 return platform_driver_register(&cpsw_driver);
2516 late_initcall(cpsw_init);
2518 static void __exit cpsw_exit(void)
2520 platform_driver_unregister(&cpsw_driver);
2522 module_exit(cpsw_exit);
2524 MODULE_LICENSE("GPL");
2525 MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
2526 MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
2527 MODULE_DESCRIPTION("TI CPSW Ethernet driver");