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>
37 #include <linux/pinctrl/consumer.h>
42 #include "davinci_cpdma.h"
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 | \
53 #define cpsw_info(priv, type, format, ...) \
55 if (netif_msg_##type(priv) && net_ratelimit()) \
56 dev_info(priv->dev, format, ## __VA_ARGS__); \
59 #define cpsw_err(priv, type, format, ...) \
61 if (netif_msg_##type(priv) && net_ratelimit()) \
62 dev_err(priv->dev, format, ## __VA_ARGS__); \
65 #define cpsw_dbg(priv, type, format, ...) \
67 if (netif_msg_##type(priv) && net_ratelimit()) \
68 dev_dbg(priv->dev, format, ## __VA_ARGS__); \
71 #define cpsw_notice(priv, type, format, ...) \
73 if (netif_msg_##type(priv) && net_ratelimit()) \
74 dev_notice(priv->dev, format, ## __VA_ARGS__); \
77 #define ALE_ALL_PORTS 0x7
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)
83 #define CPSW_VERSION_1 0x19010a
84 #define CPSW_VERSION_2 0x19010c
85 #define CPSW_VERSION_3 0x19010f
86 #define CPSW_VERSION_4 0x190112
88 #define HOST_PORT_NUM 0
89 #define SLIVER_SIZE 0x40
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
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
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
119 #define CPSW_POLL_WEIGHT 64
120 #define CPSW_MIN_PACKET_SIZE 60
121 #define CPSW_MAX_PACKET_SIZE (1500 + 14 + 4 + 4)
123 #define RX_PRIORITY_MAPPING 0x76543210
124 #define TX_PRIORITY_MAPPING 0x33221100
125 #define CPDMA_TX_PRIORITY_MAP 0x76543210
127 #define CPSW_VLAN_AWARE BIT(1)
128 #define CPSW_ALE_VLAN_AWARE 1
130 #define CPSW_FIFO_NORMAL_MODE (0 << 15)
131 #define CPSW_FIFO_DUAL_MAC_MODE (1 << 15)
132 #define CPSW_FIFO_RATE_LIMIT_MODE (2 << 15)
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)
141 #define cpsw_enable_irq(priv) \
144 for (i = 0; i < priv->num_irqs; i++) \
145 enable_irq(priv->irqs_table[i]); \
147 #define cpsw_disable_irq(priv) \
150 for (i = 0; i < priv->num_irqs; i++) \
151 disable_irq_nosync(priv->irqs_table[i]); \
154 #define cpsw_slave_index(priv) \
155 ((priv->data.dual_emac) ? priv->emac_port : \
156 priv->data.active_slave)
158 static int debug_level;
159 module_param(debug_level, int, 0);
160 MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)");
162 static int ale_ageout = 10;
163 module_param(ale_ageout, int, 0);
164 MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)");
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)");
170 struct cpsw_wr_regs {
190 struct cpsw_ss_regs {
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 */
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 */
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 */
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 */
240 /* Bit definitions for the CPSW2_CONTROL register */
241 #define PASS_PRI_TAGGED (1<<24) /* Pass Priority Tagged */
242 #define VLAN_LTYPE2_EN (1<<21) /* VLAN LTYPE 2 enable */
243 #define VLAN_LTYPE1_EN (1<<20) /* VLAN LTYPE 1 enable */
244 #define DSCP_PRI_EN (1<<16) /* DSCP Priority Enable */
245 #define TS_320 (1<<14) /* Time Sync Dest Port 320 enable */
246 #define TS_319 (1<<13) /* Time Sync Dest Port 319 enable */
247 #define TS_132 (1<<12) /* Time Sync Dest IP Addr 132 enable */
248 #define TS_131 (1<<11) /* Time Sync Dest IP Addr 131 enable */
249 #define TS_130 (1<<10) /* Time Sync Dest IP Addr 130 enable */
250 #define TS_129 (1<<9) /* Time Sync Dest IP Addr 129 enable */
251 #define TS_BIT8 (1<<8) /* ts_ttl_nonzero? */
252 #define TS_ANNEX_D_EN (1<<4) /* Time Sync Annex D enable */
253 #define TS_LTYPE2_EN (1<<3) /* Time Sync LTYPE 2 enable */
254 #define TS_LTYPE1_EN (1<<2) /* Time Sync LTYPE 1 enable */
255 #define TS_TX_EN (1<<1) /* Time Sync Transmit Enable */
256 #define TS_RX_EN (1<<0) /* Time Sync Receive Enable */
258 #define CTRL_TS_BITS \
259 (TS_320 | TS_319 | TS_132 | TS_131 | TS_130 | TS_129 | TS_BIT8 | \
260 TS_ANNEX_D_EN | TS_LTYPE1_EN)
262 #define CTRL_ALL_TS_MASK (CTRL_TS_BITS | TS_TX_EN | TS_RX_EN)
263 #define CTRL_TX_TS_BITS (CTRL_TS_BITS | TS_TX_EN)
264 #define CTRL_RX_TS_BITS (CTRL_TS_BITS | TS_RX_EN)
266 /* Bit definitions for the CPSW2_TS_SEQ_MTYPE register */
267 #define TS_SEQ_ID_OFFSET_SHIFT (16) /* Time Sync Sequence ID Offset */
268 #define TS_SEQ_ID_OFFSET_MASK (0x3f)
269 #define TS_MSG_TYPE_EN_SHIFT (0) /* Time Sync Message Type Enable */
270 #define TS_MSG_TYPE_EN_MASK (0xffff)
272 /* The PTP event messages - Sync, Delay_Req, Pdelay_Req, and Pdelay_Resp. */
273 #define EVENT_MSG_BITS ((1<<0) | (1<<1) | (1<<2) | (1<<3))
275 /* Bit definitions for the CPSW1_TS_CTL register */
276 #define CPSW_V1_TS_RX_EN BIT(0)
277 #define CPSW_V1_TS_TX_EN BIT(4)
278 #define CPSW_V1_MSG_TYPE_OFS 16
280 /* Bit definitions for the CPSW1_TS_SEQ_LTYPE register */
281 #define CPSW_V1_SEQ_ID_OFS_SHIFT 16
283 struct cpsw_host_regs {
289 u32 cpdma_tx_pri_map;
290 u32 cpdma_rx_chan_map;
293 struct cpsw_sliver_regs {
306 struct cpsw_hw_stats {
308 u32 rxbroadcastframes;
309 u32 rxmulticastframes;
312 u32 rxaligncodeerrors;
313 u32 rxoversizedframes;
315 u32 rxundersizedframes;
320 u32 txbroadcastframes;
321 u32 txmulticastframes;
323 u32 txdeferredframes;
324 u32 txcollisionframes;
325 u32 txsinglecollframes;
326 u32 txmultcollframes;
327 u32 txexcessivecollisions;
328 u32 txlatecollisions;
330 u32 txcarriersenseerrors;
333 u32 octetframes65t127;
334 u32 octetframes128t255;
335 u32 octetframes256t511;
336 u32 octetframes512t1023;
337 u32 octetframes1024tup;
346 struct cpsw_sliver_regs __iomem *sliver;
349 struct cpsw_slave_data *data;
350 struct phy_device *phy;
351 struct net_device *ndev;
356 static inline u32 slave_read(struct cpsw_slave *slave, u32 offset)
358 return __raw_readl(slave->regs + offset);
361 static inline void slave_write(struct cpsw_slave *slave, u32 val, u32 offset)
363 __raw_writel(val, slave->regs + offset);
368 struct platform_device *pdev;
369 struct net_device *ndev;
370 struct napi_struct napi;
372 struct cpsw_platform_data data;
373 struct cpsw_ss_regs __iomem *regs;
374 struct cpsw_wr_regs __iomem *wr_regs;
375 u8 __iomem *hw_stats;
376 struct cpsw_host_regs __iomem *host_port_regs;
381 struct net_device_stats stats;
385 u8 mac_addr[ETH_ALEN];
386 struct cpsw_slave *slaves;
387 struct cpdma_ctlr *dma;
388 struct cpdma_chan *txch, *rxch;
389 struct cpsw_ale *ale;
390 /* snapshot of IRQ numbers */
399 char stat_string[ETH_GSTRING_LEN];
411 #define CPSW_STAT(m) CPSW_STATS, \
412 sizeof(((struct cpsw_hw_stats *)0)->m), \
413 offsetof(struct cpsw_hw_stats, m)
414 #define CPDMA_RX_STAT(m) CPDMA_RX_STATS, \
415 sizeof(((struct cpdma_chan_stats *)0)->m), \
416 offsetof(struct cpdma_chan_stats, m)
417 #define CPDMA_TX_STAT(m) CPDMA_TX_STATS, \
418 sizeof(((struct cpdma_chan_stats *)0)->m), \
419 offsetof(struct cpdma_chan_stats, m)
421 static const struct cpsw_stats cpsw_gstrings_stats[] = {
422 { "Good Rx Frames", CPSW_STAT(rxgoodframes) },
423 { "Broadcast Rx Frames", CPSW_STAT(rxbroadcastframes) },
424 { "Multicast Rx Frames", CPSW_STAT(rxmulticastframes) },
425 { "Pause Rx Frames", CPSW_STAT(rxpauseframes) },
426 { "Rx CRC Errors", CPSW_STAT(rxcrcerrors) },
427 { "Rx Align/Code Errors", CPSW_STAT(rxaligncodeerrors) },
428 { "Oversize Rx Frames", CPSW_STAT(rxoversizedframes) },
429 { "Rx Jabbers", CPSW_STAT(rxjabberframes) },
430 { "Undersize (Short) Rx Frames", CPSW_STAT(rxundersizedframes) },
431 { "Rx Fragments", CPSW_STAT(rxfragments) },
432 { "Rx Octets", CPSW_STAT(rxoctets) },
433 { "Good Tx Frames", CPSW_STAT(txgoodframes) },
434 { "Broadcast Tx Frames", CPSW_STAT(txbroadcastframes) },
435 { "Multicast Tx Frames", CPSW_STAT(txmulticastframes) },
436 { "Pause Tx Frames", CPSW_STAT(txpauseframes) },
437 { "Deferred Tx Frames", CPSW_STAT(txdeferredframes) },
438 { "Collisions", CPSW_STAT(txcollisionframes) },
439 { "Single Collision Tx Frames", CPSW_STAT(txsinglecollframes) },
440 { "Multiple Collision Tx Frames", CPSW_STAT(txmultcollframes) },
441 { "Excessive Collisions", CPSW_STAT(txexcessivecollisions) },
442 { "Late Collisions", CPSW_STAT(txlatecollisions) },
443 { "Tx Underrun", CPSW_STAT(txunderrun) },
444 { "Carrier Sense Errors", CPSW_STAT(txcarriersenseerrors) },
445 { "Tx Octets", CPSW_STAT(txoctets) },
446 { "Rx + Tx 64 Octet Frames", CPSW_STAT(octetframes64) },
447 { "Rx + Tx 65-127 Octet Frames", CPSW_STAT(octetframes65t127) },
448 { "Rx + Tx 128-255 Octet Frames", CPSW_STAT(octetframes128t255) },
449 { "Rx + Tx 256-511 Octet Frames", CPSW_STAT(octetframes256t511) },
450 { "Rx + Tx 512-1023 Octet Frames", CPSW_STAT(octetframes512t1023) },
451 { "Rx + Tx 1024-Up Octet Frames", CPSW_STAT(octetframes1024tup) },
452 { "Net Octets", CPSW_STAT(netoctets) },
453 { "Rx Start of Frame Overruns", CPSW_STAT(rxsofoverruns) },
454 { "Rx Middle of Frame Overruns", CPSW_STAT(rxmofoverruns) },
455 { "Rx DMA Overruns", CPSW_STAT(rxdmaoverruns) },
456 { "Rx DMA chan: head_enqueue", CPDMA_RX_STAT(head_enqueue) },
457 { "Rx DMA chan: tail_enqueue", CPDMA_RX_STAT(tail_enqueue) },
458 { "Rx DMA chan: pad_enqueue", CPDMA_RX_STAT(pad_enqueue) },
459 { "Rx DMA chan: misqueued", CPDMA_RX_STAT(misqueued) },
460 { "Rx DMA chan: desc_alloc_fail", CPDMA_RX_STAT(desc_alloc_fail) },
461 { "Rx DMA chan: pad_alloc_fail", CPDMA_RX_STAT(pad_alloc_fail) },
462 { "Rx DMA chan: runt_receive_buf", CPDMA_RX_STAT(runt_receive_buff) },
463 { "Rx DMA chan: runt_transmit_buf", CPDMA_RX_STAT(runt_transmit_buff) },
464 { "Rx DMA chan: empty_dequeue", CPDMA_RX_STAT(empty_dequeue) },
465 { "Rx DMA chan: busy_dequeue", CPDMA_RX_STAT(busy_dequeue) },
466 { "Rx DMA chan: good_dequeue", CPDMA_RX_STAT(good_dequeue) },
467 { "Rx DMA chan: requeue", CPDMA_RX_STAT(requeue) },
468 { "Rx DMA chan: teardown_dequeue", CPDMA_RX_STAT(teardown_dequeue) },
469 { "Tx DMA chan: head_enqueue", CPDMA_TX_STAT(head_enqueue) },
470 { "Tx DMA chan: tail_enqueue", CPDMA_TX_STAT(tail_enqueue) },
471 { "Tx DMA chan: pad_enqueue", CPDMA_TX_STAT(pad_enqueue) },
472 { "Tx DMA chan: misqueued", CPDMA_TX_STAT(misqueued) },
473 { "Tx DMA chan: desc_alloc_fail", CPDMA_TX_STAT(desc_alloc_fail) },
474 { "Tx DMA chan: pad_alloc_fail", CPDMA_TX_STAT(pad_alloc_fail) },
475 { "Tx DMA chan: runt_receive_buf", CPDMA_TX_STAT(runt_receive_buff) },
476 { "Tx DMA chan: runt_transmit_buf", CPDMA_TX_STAT(runt_transmit_buff) },
477 { "Tx DMA chan: empty_dequeue", CPDMA_TX_STAT(empty_dequeue) },
478 { "Tx DMA chan: busy_dequeue", CPDMA_TX_STAT(busy_dequeue) },
479 { "Tx DMA chan: good_dequeue", CPDMA_TX_STAT(good_dequeue) },
480 { "Tx DMA chan: requeue", CPDMA_TX_STAT(requeue) },
481 { "Tx DMA chan: teardown_dequeue", CPDMA_TX_STAT(teardown_dequeue) },
484 #define CPSW_STATS_LEN ARRAY_SIZE(cpsw_gstrings_stats)
486 #define napi_to_priv(napi) container_of(napi, struct cpsw_priv, napi)
487 #define for_each_slave(priv, func, arg...) \
489 struct cpsw_slave *slave; \
491 if (priv->data.dual_emac) \
492 (func)((priv)->slaves + priv->emac_port, ##arg);\
494 for (n = (priv)->data.slaves, \
495 slave = (priv)->slaves; \
497 (func)(slave++, ##arg); \
499 #define cpsw_get_slave_ndev(priv, __slave_no__) \
500 (priv->slaves[__slave_no__].ndev)
501 #define cpsw_get_slave_priv(priv, __slave_no__) \
502 ((priv->slaves[__slave_no__].ndev) ? \
503 netdev_priv(priv->slaves[__slave_no__].ndev) : NULL) \
505 #define cpsw_dual_emac_src_port_detect(status, priv, ndev, skb) \
507 if (!priv->data.dual_emac) \
509 if (CPDMA_RX_SOURCE_PORT(status) == 1) { \
510 ndev = cpsw_get_slave_ndev(priv, 0); \
511 priv = netdev_priv(ndev); \
513 } else if (CPDMA_RX_SOURCE_PORT(status) == 2) { \
514 ndev = cpsw_get_slave_ndev(priv, 1); \
515 priv = netdev_priv(ndev); \
519 #define cpsw_add_mcast(priv, addr) \
521 if (priv->data.dual_emac) { \
522 struct cpsw_slave *slave = priv->slaves + \
524 int slave_port = cpsw_get_slave_port(priv, \
526 cpsw_ale_add_mcast(priv->ale, addr, \
527 1 << slave_port | 1 << priv->host_port, \
528 ALE_VLAN, slave->port_vlan, 0); \
530 cpsw_ale_add_mcast(priv->ale, addr, \
531 ALE_ALL_PORTS << priv->host_port, \
536 static inline int cpsw_get_slave_port(struct cpsw_priv *priv, u32 slave_num)
538 if (priv->host_port == 0)
539 return slave_num + 1;
544 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
546 struct cpsw_priv *priv = netdev_priv(ndev);
548 if (ndev->flags & IFF_PROMISC) {
549 /* Enable promiscuous mode */
550 dev_err(priv->dev, "Ignoring Promiscuous mode\n");
554 /* Clear all mcast from ALE */
555 cpsw_ale_flush_multicast(priv->ale, ALE_ALL_PORTS << priv->host_port);
557 if (!netdev_mc_empty(ndev)) {
558 struct netdev_hw_addr *ha;
560 /* program multicast address list into ALE register */
561 netdev_for_each_mc_addr(ha, ndev) {
562 cpsw_add_mcast(priv, (u8 *)ha->addr);
567 static void cpsw_intr_enable(struct cpsw_priv *priv)
569 __raw_writel(0xFF, &priv->wr_regs->tx_en);
570 __raw_writel(0xFF, &priv->wr_regs->rx_en);
572 cpdma_ctlr_int_ctrl(priv->dma, true);
576 static void cpsw_intr_disable(struct cpsw_priv *priv)
578 __raw_writel(0, &priv->wr_regs->tx_en);
579 __raw_writel(0, &priv->wr_regs->rx_en);
581 cpdma_ctlr_int_ctrl(priv->dma, false);
585 void cpsw_tx_handler(void *token, int len, int status)
587 struct sk_buff *skb = token;
588 struct net_device *ndev = skb->dev;
589 struct cpsw_priv *priv = netdev_priv(ndev);
591 /* Check whether the queue is stopped due to stalled tx dma, if the
592 * queue is stopped then start the queue as we have free desc for tx
594 if (unlikely(netif_queue_stopped(ndev)))
595 netif_wake_queue(ndev);
596 cpts_tx_timestamp(priv->cpts, skb);
597 priv->stats.tx_packets++;
598 priv->stats.tx_bytes += len;
599 dev_kfree_skb_any(skb);
602 void cpsw_rx_handler(void *token, int len, int status)
604 struct sk_buff *skb = token;
605 struct sk_buff *new_skb;
606 struct net_device *ndev = skb->dev;
607 struct cpsw_priv *priv = netdev_priv(ndev);
610 cpsw_dual_emac_src_port_detect(status, priv, ndev, skb);
612 if (unlikely(status < 0)) {
613 /* the interface is going down, skbs are purged */
614 dev_kfree_skb_any(skb);
618 new_skb = netdev_alloc_skb_ip_align(ndev, priv->rx_packet_max);
621 cpts_rx_timestamp(priv->cpts, skb);
622 skb->protocol = eth_type_trans(skb, ndev);
623 netif_receive_skb(skb);
624 priv->stats.rx_bytes += len;
625 priv->stats.rx_packets++;
627 priv->stats.rx_dropped++;
631 ret = cpdma_chan_submit(priv->rxch, new_skb, new_skb->data,
632 skb_tailroom(new_skb), 0);
633 if (WARN_ON(ret < 0))
634 dev_kfree_skb_any(new_skb);
637 static irqreturn_t cpsw_interrupt(int irq, void *dev_id)
639 struct cpsw_priv *priv = dev_id;
641 cpsw_intr_disable(priv);
642 if (priv->irq_enabled == true) {
643 cpsw_disable_irq(priv);
644 priv->irq_enabled = false;
647 if (netif_running(priv->ndev)) {
648 napi_schedule(&priv->napi);
652 priv = cpsw_get_slave_priv(priv, 1);
656 if (netif_running(priv->ndev)) {
657 napi_schedule(&priv->napi);
663 static int cpsw_poll(struct napi_struct *napi, int budget)
665 struct cpsw_priv *priv = napi_to_priv(napi);
668 num_tx = cpdma_chan_process(priv->txch, 128);
670 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
672 num_rx = cpdma_chan_process(priv->rxch, budget);
673 if (num_rx < budget) {
674 struct cpsw_priv *prim_cpsw;
677 cpsw_intr_enable(priv);
678 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
679 prim_cpsw = cpsw_get_slave_priv(priv, 0);
680 if (prim_cpsw->irq_enabled == false) {
681 prim_cpsw->irq_enabled = true;
682 cpsw_enable_irq(priv);
686 if (num_rx || num_tx)
687 cpsw_dbg(priv, intr, "poll %d rx, %d tx pkts\n",
693 static inline void soft_reset(const char *module, void __iomem *reg)
695 unsigned long timeout = jiffies + HZ;
697 __raw_writel(1, reg);
700 } while ((__raw_readl(reg) & 1) && time_after(timeout, jiffies));
702 WARN(__raw_readl(reg) & 1, "failed to soft-reset %s\n", module);
705 #define mac_hi(mac) (((mac)[0] << 0) | ((mac)[1] << 8) | \
706 ((mac)[2] << 16) | ((mac)[3] << 24))
707 #define mac_lo(mac) (((mac)[4] << 0) | ((mac)[5] << 8))
709 static void cpsw_set_slave_mac(struct cpsw_slave *slave,
710 struct cpsw_priv *priv)
712 slave_write(slave, mac_hi(priv->mac_addr), SA_HI);
713 slave_write(slave, mac_lo(priv->mac_addr), SA_LO);
716 static void _cpsw_adjust_link(struct cpsw_slave *slave,
717 struct cpsw_priv *priv, bool *link)
719 struct phy_device *phy = slave->phy;
726 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
729 mac_control = priv->data.mac_control;
731 /* enable forwarding */
732 cpsw_ale_control_set(priv->ale, slave_port,
733 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
735 if (phy->speed == 1000)
736 mac_control |= BIT(7); /* GIGABITEN */
738 mac_control |= BIT(0); /* FULLDUPLEXEN */
740 /* set speed_in input in case RMII mode is used in 100Mbps */
741 if (phy->speed == 100)
742 mac_control |= BIT(15);
747 /* disable forwarding */
748 cpsw_ale_control_set(priv->ale, slave_port,
749 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
752 if (mac_control != slave->mac_control) {
753 phy_print_status(phy);
754 __raw_writel(mac_control, &slave->sliver->mac_control);
757 slave->mac_control = mac_control;
760 static void cpsw_adjust_link(struct net_device *ndev)
762 struct cpsw_priv *priv = netdev_priv(ndev);
765 for_each_slave(priv, _cpsw_adjust_link, priv, &link);
768 netif_carrier_on(ndev);
769 if (netif_running(ndev))
770 netif_wake_queue(ndev);
772 netif_carrier_off(ndev);
773 netif_stop_queue(ndev);
777 static int cpsw_get_coalesce(struct net_device *ndev,
778 struct ethtool_coalesce *coal)
780 struct cpsw_priv *priv = netdev_priv(ndev);
782 coal->rx_coalesce_usecs = priv->coal_intvl;
786 static int cpsw_set_coalesce(struct net_device *ndev,
787 struct ethtool_coalesce *coal)
789 struct cpsw_priv *priv = netdev_priv(ndev);
791 u32 num_interrupts = 0;
796 if (!coal->rx_coalesce_usecs)
799 coal_intvl = coal->rx_coalesce_usecs;
801 int_ctrl = readl(&priv->wr_regs->int_control);
802 prescale = priv->bus_freq_mhz * 4;
804 if (coal_intvl < CPSW_CMINTMIN_INTVL)
805 coal_intvl = CPSW_CMINTMIN_INTVL;
807 if (coal_intvl > CPSW_CMINTMAX_INTVL) {
808 /* Interrupt pacer works with 4us Pulse, we can
809 * throttle further by dilating the 4us pulse.
811 addnl_dvdr = CPSW_INTPRESCALE_MASK / prescale;
813 if (addnl_dvdr > 1) {
814 prescale *= addnl_dvdr;
815 if (coal_intvl > (CPSW_CMINTMAX_INTVL * addnl_dvdr))
816 coal_intvl = (CPSW_CMINTMAX_INTVL
820 coal_intvl = CPSW_CMINTMAX_INTVL;
824 num_interrupts = (1000 * addnl_dvdr) / coal_intvl;
825 writel(num_interrupts, &priv->wr_regs->rx_imax);
826 writel(num_interrupts, &priv->wr_regs->tx_imax);
828 int_ctrl |= CPSW_INTPACEEN;
829 int_ctrl &= (~CPSW_INTPRESCALE_MASK);
830 int_ctrl |= (prescale & CPSW_INTPRESCALE_MASK);
831 writel(int_ctrl, &priv->wr_regs->int_control);
833 cpsw_notice(priv, timer, "Set coalesce to %d usecs.\n", coal_intvl);
834 if (priv->data.dual_emac) {
837 for (i = 0; i < priv->data.slaves; i++) {
838 priv = netdev_priv(priv->slaves[i].ndev);
839 priv->coal_intvl = coal_intvl;
842 priv->coal_intvl = coal_intvl;
848 static int cpsw_get_sset_count(struct net_device *ndev, int sset)
852 return CPSW_STATS_LEN;
858 static void cpsw_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
865 for (i = 0; i < CPSW_STATS_LEN; i++) {
866 memcpy(p, cpsw_gstrings_stats[i].stat_string,
868 p += ETH_GSTRING_LEN;
874 static void cpsw_get_ethtool_stats(struct net_device *ndev,
875 struct ethtool_stats *stats, u64 *data)
877 struct cpsw_priv *priv = netdev_priv(ndev);
878 struct cpdma_chan_stats rx_stats;
879 struct cpdma_chan_stats tx_stats;
884 /* Collect Davinci CPDMA stats for Rx and Tx Channel */
885 cpdma_chan_get_stats(priv->rxch, &rx_stats);
886 cpdma_chan_get_stats(priv->txch, &tx_stats);
888 for (i = 0; i < CPSW_STATS_LEN; i++) {
889 switch (cpsw_gstrings_stats[i].type) {
891 val = readl(priv->hw_stats +
892 cpsw_gstrings_stats[i].stat_offset);
897 p = (u8 *)&rx_stats +
898 cpsw_gstrings_stats[i].stat_offset;
903 p = (u8 *)&tx_stats +
904 cpsw_gstrings_stats[i].stat_offset;
911 static inline int __show_stat(char *buf, int maxlen, const char *name, u32 val)
913 static char *leader = "........................................";
918 return snprintf(buf, maxlen, "%s %s %10d\n", name,
919 leader + strlen(name), val);
922 static int cpsw_common_res_usage_state(struct cpsw_priv *priv)
927 if (!priv->data.dual_emac)
930 for (i = 0; i < priv->data.slaves; i++)
931 if (priv->slaves[i].open_stat)
937 static inline int cpsw_tx_packet_submit(struct net_device *ndev,
938 struct cpsw_priv *priv, struct sk_buff *skb)
940 if (!priv->data.dual_emac)
941 return cpdma_chan_submit(priv->txch, skb, skb->data,
944 if (ndev == cpsw_get_slave_ndev(priv, 0))
945 return cpdma_chan_submit(priv->txch, skb, skb->data,
948 return cpdma_chan_submit(priv->txch, skb, skb->data,
952 static inline void cpsw_add_dual_emac_def_ale_entries(
953 struct cpsw_priv *priv, struct cpsw_slave *slave,
956 u32 port_mask = 1 << slave_port | 1 << priv->host_port;
958 if (priv->version == CPSW_VERSION_1)
959 slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
961 slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
962 cpsw_ale_add_vlan(priv->ale, slave->port_vlan, port_mask,
963 port_mask, port_mask, 0);
964 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
965 port_mask, ALE_VLAN, slave->port_vlan, 0);
966 cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
967 priv->host_port, ALE_VLAN, slave->port_vlan);
970 static void soft_reset_slave(struct cpsw_slave *slave)
974 snprintf(name, sizeof(name), "slave-%d", slave->slave_num);
975 soft_reset(name, &slave->sliver->soft_reset);
978 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
982 soft_reset_slave(slave);
984 /* setup priority mapping */
985 __raw_writel(RX_PRIORITY_MAPPING, &slave->sliver->rx_pri_map);
987 switch (priv->version) {
989 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
994 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
998 /* setup max packet size, and mac address */
999 __raw_writel(priv->rx_packet_max, &slave->sliver->rx_maxlen);
1000 cpsw_set_slave_mac(slave, priv);
1002 slave->mac_control = 0; /* no link yet */
1004 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1006 if (priv->data.dual_emac)
1007 cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
1009 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1010 1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
1012 slave->phy = phy_connect(priv->ndev, slave->data->phy_id,
1013 &cpsw_adjust_link, slave->data->phy_if);
1014 if (IS_ERR(slave->phy)) {
1015 dev_err(priv->dev, "phy %s not found on slave %d\n",
1016 slave->data->phy_id, slave->slave_num);
1019 dev_info(priv->dev, "phy found : id is : 0x%x\n",
1020 slave->phy->phy_id);
1021 phy_start(slave->phy);
1023 /* Configure GMII_SEL register */
1024 cpsw_phy_sel(&priv->pdev->dev, slave->phy->interface,
1029 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
1031 const int vlan = priv->data.default_vlan;
1032 const int port = priv->host_port;
1036 reg = (priv->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
1039 writel(vlan, &priv->host_port_regs->port_vlan);
1041 for (i = 0; i < priv->data.slaves; i++)
1042 slave_write(priv->slaves + i, vlan, reg);
1044 cpsw_ale_add_vlan(priv->ale, vlan, ALE_ALL_PORTS << port,
1045 ALE_ALL_PORTS << port, ALE_ALL_PORTS << port,
1046 (ALE_PORT_1 | ALE_PORT_2) << port);
1049 static void cpsw_init_host_port(struct cpsw_priv *priv)
1054 /* soft reset the controller and initialize ale */
1055 soft_reset("cpsw", &priv->regs->soft_reset);
1056 cpsw_ale_start(priv->ale);
1058 /* switch to vlan unaware mode */
1059 cpsw_ale_control_set(priv->ale, priv->host_port, ALE_VLAN_AWARE,
1060 CPSW_ALE_VLAN_AWARE);
1061 control_reg = readl(&priv->regs->control);
1062 control_reg |= CPSW_VLAN_AWARE;
1063 writel(control_reg, &priv->regs->control);
1064 fifo_mode = (priv->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
1065 CPSW_FIFO_NORMAL_MODE;
1066 writel(fifo_mode, &priv->host_port_regs->tx_in_ctl);
1068 /* setup host port priority mapping */
1069 __raw_writel(CPDMA_TX_PRIORITY_MAP,
1070 &priv->host_port_regs->cpdma_tx_pri_map);
1071 __raw_writel(0, &priv->host_port_regs->cpdma_rx_chan_map);
1073 cpsw_ale_control_set(priv->ale, priv->host_port,
1074 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
1076 if (!priv->data.dual_emac) {
1077 cpsw_ale_add_ucast(priv->ale, priv->mac_addr, priv->host_port,
1079 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1080 1 << priv->host_port, 0, 0, ALE_MCAST_FWD_2);
1084 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_priv *priv)
1088 phy_stop(slave->phy);
1089 phy_disconnect(slave->phy);
1093 static int cpsw_ndo_open(struct net_device *ndev)
1095 struct cpsw_priv *priv = netdev_priv(ndev);
1096 struct cpsw_priv *prim_cpsw;
1100 if (!cpsw_common_res_usage_state(priv))
1101 cpsw_intr_disable(priv);
1102 netif_carrier_off(ndev);
1104 pm_runtime_get_sync(&priv->pdev->dev);
1106 reg = priv->version;
1108 dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
1109 CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
1110 CPSW_RTL_VERSION(reg));
1112 /* initialize host and slave ports */
1113 if (!cpsw_common_res_usage_state(priv))
1114 cpsw_init_host_port(priv);
1115 for_each_slave(priv, cpsw_slave_open, priv);
1117 /* Add default VLAN */
1118 if (!priv->data.dual_emac)
1119 cpsw_add_default_vlan(priv);
1121 if (!cpsw_common_res_usage_state(priv)) {
1122 /* setup tx dma to fixed prio and zero offset */
1123 cpdma_control_set(priv->dma, CPDMA_TX_PRIO_FIXED, 1);
1124 cpdma_control_set(priv->dma, CPDMA_RX_BUFFER_OFFSET, 0);
1126 /* disable priority elevation */
1127 __raw_writel(0, &priv->regs->ptype);
1129 /* enable statistics collection only on all ports */
1130 __raw_writel(0x7, &priv->regs->stat_port_en);
1132 if (WARN_ON(!priv->data.rx_descs))
1133 priv->data.rx_descs = 128;
1135 for (i = 0; i < priv->data.rx_descs; i++) {
1136 struct sk_buff *skb;
1139 skb = __netdev_alloc_skb_ip_align(priv->ndev,
1140 priv->rx_packet_max, GFP_KERNEL);
1143 ret = cpdma_chan_submit(priv->rxch, skb, skb->data,
1144 skb_tailroom(skb), 0);
1150 /* continue even if we didn't manage to submit all
1153 cpsw_info(priv, ifup, "submitted %d rx descriptors\n", i);
1156 /* Enable Interrupt pacing if configured */
1157 if (priv->coal_intvl != 0) {
1158 struct ethtool_coalesce coal;
1160 coal.rx_coalesce_usecs = (priv->coal_intvl << 4);
1161 cpsw_set_coalesce(ndev, &coal);
1164 prim_cpsw = cpsw_get_slave_priv(priv, 0);
1165 if (prim_cpsw->irq_enabled == false) {
1166 if ((priv == prim_cpsw) || !netif_running(prim_cpsw->ndev)) {
1167 prim_cpsw->irq_enabled = true;
1168 cpsw_enable_irq(prim_cpsw);
1172 napi_enable(&priv->napi);
1173 cpdma_ctlr_start(priv->dma);
1174 cpsw_intr_enable(priv);
1175 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
1176 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
1178 if (priv->data.dual_emac)
1179 priv->slaves[priv->emac_port].open_stat = true;
1183 cpdma_ctlr_stop(priv->dma);
1184 for_each_slave(priv, cpsw_slave_stop, priv);
1185 pm_runtime_put_sync(&priv->pdev->dev);
1186 netif_carrier_off(priv->ndev);
1190 static int cpsw_ndo_stop(struct net_device *ndev)
1192 struct cpsw_priv *priv = netdev_priv(ndev);
1194 cpsw_info(priv, ifdown, "shutting down cpsw device\n");
1195 netif_stop_queue(priv->ndev);
1196 napi_disable(&priv->napi);
1197 netif_carrier_off(priv->ndev);
1199 if (cpsw_common_res_usage_state(priv) <= 1) {
1200 cpsw_intr_disable(priv);
1201 cpdma_ctlr_int_ctrl(priv->dma, false);
1202 cpdma_ctlr_stop(priv->dma);
1203 cpsw_ale_stop(priv->ale);
1205 for_each_slave(priv, cpsw_slave_stop, priv);
1206 pm_runtime_put_sync(&priv->pdev->dev);
1207 if (priv->data.dual_emac)
1208 priv->slaves[priv->emac_port].open_stat = false;
1212 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
1213 struct net_device *ndev)
1215 struct cpsw_priv *priv = netdev_priv(ndev);
1218 ndev->trans_start = jiffies;
1220 if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
1221 cpsw_err(priv, tx_err, "packet pad failed\n");
1222 priv->stats.tx_dropped++;
1223 return NETDEV_TX_OK;
1226 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
1227 priv->cpts->tx_enable)
1228 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
1230 skb_tx_timestamp(skb);
1232 ret = cpsw_tx_packet_submit(ndev, priv, skb);
1233 if (unlikely(ret != 0)) {
1234 cpsw_err(priv, tx_err, "desc submit failed\n");
1238 /* If there is no more tx desc left free then we need to
1239 * tell the kernel to stop sending us tx frames.
1241 if (unlikely(!cpdma_check_free_tx_desc(priv->txch)))
1242 netif_stop_queue(ndev);
1244 return NETDEV_TX_OK;
1246 priv->stats.tx_dropped++;
1247 netif_stop_queue(ndev);
1248 return NETDEV_TX_BUSY;
1251 static void cpsw_ndo_change_rx_flags(struct net_device *ndev, int flags)
1254 * The switch cannot operate in promiscuous mode without substantial
1255 * headache. For promiscuous mode to work, we would need to put the
1256 * ALE in bypass mode and route all traffic to the host port.
1257 * Subsequently, the host will need to operate as a "bridge", learn,
1258 * and flood as needed. For now, we simply complain here and
1259 * do nothing about it :-)
1261 if ((flags & IFF_PROMISC) && (ndev->flags & IFF_PROMISC))
1262 dev_err(&ndev->dev, "promiscuity ignored!\n");
1265 * The switch cannot filter multicast traffic unless it is configured
1266 * in "VLAN Aware" mode. Unfortunately, VLAN awareness requires a
1267 * whole bunch of additional logic that this driver does not implement
1270 if ((flags & IFF_ALLMULTI) && !(ndev->flags & IFF_ALLMULTI))
1271 dev_err(&ndev->dev, "multicast traffic cannot be filtered!\n");
1274 #ifdef CONFIG_TI_CPTS
1276 static void cpsw_hwtstamp_v1(struct cpsw_priv *priv)
1278 struct cpsw_slave *slave = &priv->slaves[priv->data.active_slave];
1281 if (!priv->cpts->tx_enable && !priv->cpts->rx_enable) {
1282 slave_write(slave, 0, CPSW1_TS_CTL);
1286 seq_id = (30 << CPSW_V1_SEQ_ID_OFS_SHIFT) | ETH_P_1588;
1287 ts_en = EVENT_MSG_BITS << CPSW_V1_MSG_TYPE_OFS;
1289 if (priv->cpts->tx_enable)
1290 ts_en |= CPSW_V1_TS_TX_EN;
1292 if (priv->cpts->rx_enable)
1293 ts_en |= CPSW_V1_TS_RX_EN;
1295 slave_write(slave, ts_en, CPSW1_TS_CTL);
1296 slave_write(slave, seq_id, CPSW1_TS_SEQ_LTYPE);
1299 static void cpsw_hwtstamp_v2(struct cpsw_priv *priv)
1301 struct cpsw_slave *slave;
1304 if (priv->data.dual_emac)
1305 slave = &priv->slaves[priv->emac_port];
1307 slave = &priv->slaves[priv->data.active_slave];
1309 ctrl = slave_read(slave, CPSW2_CONTROL);
1310 ctrl &= ~CTRL_ALL_TS_MASK;
1312 if (priv->cpts->tx_enable)
1313 ctrl |= CTRL_TX_TS_BITS;
1315 if (priv->cpts->rx_enable)
1316 ctrl |= CTRL_RX_TS_BITS;
1318 mtype = (30 << TS_SEQ_ID_OFFSET_SHIFT) | EVENT_MSG_BITS;
1320 slave_write(slave, mtype, CPSW2_TS_SEQ_MTYPE);
1321 slave_write(slave, ctrl, CPSW2_CONTROL);
1322 __raw_writel(ETH_P_1588, &priv->regs->ts_ltype);
1325 static int cpsw_hwtstamp_ioctl(struct net_device *dev, struct ifreq *ifr)
1327 struct cpsw_priv *priv = netdev_priv(dev);
1328 struct cpts *cpts = priv->cpts;
1329 struct hwtstamp_config cfg;
1331 if (priv->version != CPSW_VERSION_1 &&
1332 priv->version != CPSW_VERSION_2)
1335 if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
1338 /* reserved for future extensions */
1342 if (cfg.tx_type != HWTSTAMP_TX_OFF && cfg.tx_type != HWTSTAMP_TX_ON)
1345 switch (cfg.rx_filter) {
1346 case HWTSTAMP_FILTER_NONE:
1347 cpts->rx_enable = 0;
1349 case HWTSTAMP_FILTER_ALL:
1350 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
1351 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
1352 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
1354 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
1355 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
1356 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
1357 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
1358 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
1359 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
1360 case HWTSTAMP_FILTER_PTP_V2_EVENT:
1361 case HWTSTAMP_FILTER_PTP_V2_SYNC:
1362 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
1363 cpts->rx_enable = 1;
1364 cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
1370 cpts->tx_enable = cfg.tx_type == HWTSTAMP_TX_ON;
1372 switch (priv->version) {
1373 case CPSW_VERSION_1:
1374 cpsw_hwtstamp_v1(priv);
1376 case CPSW_VERSION_2:
1377 cpsw_hwtstamp_v2(priv);
1383 return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1386 #endif /*CONFIG_TI_CPTS*/
1388 static int cpsw_ndo_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
1390 struct cpsw_priv *priv = netdev_priv(dev);
1391 struct mii_ioctl_data *data = if_mii(req);
1392 int slave_no = cpsw_slave_index(priv);
1394 if (!netif_running(dev))
1398 #ifdef CONFIG_TI_CPTS
1400 return cpsw_hwtstamp_ioctl(dev, req);
1403 data->phy_id = priv->slaves[slave_no].phy->addr;
1412 static void cpsw_ndo_tx_timeout(struct net_device *ndev)
1414 struct cpsw_priv *priv = netdev_priv(ndev);
1416 cpsw_err(priv, tx_err, "transmit timeout, restarting dma\n");
1417 priv->stats.tx_errors++;
1418 cpsw_intr_disable(priv);
1419 cpdma_ctlr_int_ctrl(priv->dma, false);
1420 cpdma_chan_stop(priv->txch);
1421 cpdma_chan_start(priv->txch);
1422 cpdma_ctlr_int_ctrl(priv->dma, true);
1423 cpsw_intr_enable(priv);
1424 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
1425 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
1429 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
1431 struct cpsw_priv *priv = netdev_priv(ndev);
1432 struct sockaddr *addr = (struct sockaddr *)p;
1436 if (!is_valid_ether_addr(addr->sa_data))
1437 return -EADDRNOTAVAIL;
1439 if (priv->data.dual_emac) {
1440 vid = priv->slaves[priv->emac_port].port_vlan;
1444 cpsw_ale_del_ucast(priv->ale, priv->mac_addr, priv->host_port,
1446 cpsw_ale_add_ucast(priv->ale, addr->sa_data, priv->host_port,
1449 memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
1450 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
1451 for_each_slave(priv, cpsw_set_slave_mac, priv);
1456 static struct net_device_stats *cpsw_ndo_get_stats(struct net_device *ndev)
1458 struct cpsw_priv *priv = netdev_priv(ndev);
1459 return &priv->stats;
1462 #ifdef CONFIG_NET_POLL_CONTROLLER
1463 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1465 struct cpsw_priv *priv = netdev_priv(ndev);
1467 cpsw_intr_disable(priv);
1468 cpdma_ctlr_int_ctrl(priv->dma, false);
1469 cpsw_interrupt(ndev->irq, priv);
1470 cpdma_ctlr_int_ctrl(priv->dma, true);
1471 cpsw_intr_enable(priv);
1472 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
1473 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
1478 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
1483 ret = cpsw_ale_add_vlan(priv->ale, vid,
1484 ALE_ALL_PORTS << priv->host_port,
1485 0, ALE_ALL_PORTS << priv->host_port,
1486 (ALE_PORT_1 | ALE_PORT_2) << priv->host_port);
1490 ret = cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1491 priv->host_port, ALE_VLAN, vid);
1495 ret = cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1496 ALE_ALL_PORTS << priv->host_port,
1499 goto clean_vlan_ucast;
1503 cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1504 priv->host_port, ALE_VLAN, vid);
1506 cpsw_ale_del_vlan(priv->ale, vid, 0);
1510 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1511 __be16 proto, u16 vid)
1513 struct cpsw_priv *priv = netdev_priv(ndev);
1515 if (vid == priv->data.default_vlan)
1518 dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1519 return cpsw_add_vlan_ale_entry(priv, vid);
1522 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1523 __be16 proto, u16 vid)
1525 struct cpsw_priv *priv = netdev_priv(ndev);
1528 if (vid == priv->data.default_vlan)
1531 dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1532 ret = cpsw_ale_del_vlan(priv->ale, vid, 0);
1536 ret = cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1537 priv->host_port, ALE_VLAN, vid);
1541 return cpsw_ale_del_mcast(priv->ale, priv->ndev->broadcast,
1545 static const struct net_device_ops cpsw_netdev_ops = {
1546 .ndo_open = cpsw_ndo_open,
1547 .ndo_stop = cpsw_ndo_stop,
1548 .ndo_start_xmit = cpsw_ndo_start_xmit,
1549 .ndo_change_rx_flags = cpsw_ndo_change_rx_flags,
1550 .ndo_set_mac_address = cpsw_ndo_set_mac_address,
1551 .ndo_do_ioctl = cpsw_ndo_ioctl,
1552 .ndo_validate_addr = eth_validate_addr,
1553 .ndo_change_mtu = eth_change_mtu,
1554 .ndo_tx_timeout = cpsw_ndo_tx_timeout,
1555 .ndo_get_stats = cpsw_ndo_get_stats,
1556 .ndo_set_rx_mode = cpsw_ndo_set_rx_mode,
1557 #ifdef CONFIG_NET_POLL_CONTROLLER
1558 .ndo_poll_controller = cpsw_ndo_poll_controller,
1560 .ndo_vlan_rx_add_vid = cpsw_ndo_vlan_rx_add_vid,
1561 .ndo_vlan_rx_kill_vid = cpsw_ndo_vlan_rx_kill_vid,
1564 static void cpsw_get_drvinfo(struct net_device *ndev,
1565 struct ethtool_drvinfo *info)
1567 struct cpsw_priv *priv = netdev_priv(ndev);
1569 strlcpy(info->driver, "TI CPSW Driver v1.0", sizeof(info->driver));
1570 strlcpy(info->version, "1.0", sizeof(info->version));
1571 strlcpy(info->bus_info, priv->pdev->name, sizeof(info->bus_info));
1574 static u32 cpsw_get_msglevel(struct net_device *ndev)
1576 struct cpsw_priv *priv = netdev_priv(ndev);
1577 return priv->msg_enable;
1580 static void cpsw_set_msglevel(struct net_device *ndev, u32 value)
1582 struct cpsw_priv *priv = netdev_priv(ndev);
1583 priv->msg_enable = value;
1586 static int cpsw_get_ts_info(struct net_device *ndev,
1587 struct ethtool_ts_info *info)
1589 #ifdef CONFIG_TI_CPTS
1590 struct cpsw_priv *priv = netdev_priv(ndev);
1592 info->so_timestamping =
1593 SOF_TIMESTAMPING_TX_HARDWARE |
1594 SOF_TIMESTAMPING_TX_SOFTWARE |
1595 SOF_TIMESTAMPING_RX_HARDWARE |
1596 SOF_TIMESTAMPING_RX_SOFTWARE |
1597 SOF_TIMESTAMPING_SOFTWARE |
1598 SOF_TIMESTAMPING_RAW_HARDWARE;
1599 info->phc_index = priv->cpts->phc_index;
1601 (1 << HWTSTAMP_TX_OFF) |
1602 (1 << HWTSTAMP_TX_ON);
1604 (1 << HWTSTAMP_FILTER_NONE) |
1605 (1 << HWTSTAMP_FILTER_PTP_V2_EVENT);
1607 info->so_timestamping =
1608 SOF_TIMESTAMPING_TX_SOFTWARE |
1609 SOF_TIMESTAMPING_RX_SOFTWARE |
1610 SOF_TIMESTAMPING_SOFTWARE;
1611 info->phc_index = -1;
1613 info->rx_filters = 0;
1618 static int cpsw_get_settings(struct net_device *ndev,
1619 struct ethtool_cmd *ecmd)
1621 struct cpsw_priv *priv = netdev_priv(ndev);
1622 int slave_no = cpsw_slave_index(priv);
1624 if (priv->slaves[slave_no].phy)
1625 return phy_ethtool_gset(priv->slaves[slave_no].phy, ecmd);
1630 static int cpsw_set_settings(struct net_device *ndev, struct ethtool_cmd *ecmd)
1632 struct cpsw_priv *priv = netdev_priv(ndev);
1633 int slave_no = cpsw_slave_index(priv);
1635 if (priv->slaves[slave_no].phy)
1636 return phy_ethtool_sset(priv->slaves[slave_no].phy, ecmd);
1641 static void cpsw_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1643 struct cpsw_priv *priv = netdev_priv(ndev);
1644 int slave_no = cpsw_slave_index(priv);
1649 if (priv->slaves[slave_no].phy)
1650 phy_ethtool_get_wol(priv->slaves[slave_no].phy, wol);
1653 static int cpsw_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1655 struct cpsw_priv *priv = netdev_priv(ndev);
1656 int slave_no = cpsw_slave_index(priv);
1658 if (priv->slaves[slave_no].phy)
1659 return phy_ethtool_set_wol(priv->slaves[slave_no].phy, wol);
1664 static const struct ethtool_ops cpsw_ethtool_ops = {
1665 .get_drvinfo = cpsw_get_drvinfo,
1666 .get_msglevel = cpsw_get_msglevel,
1667 .set_msglevel = cpsw_set_msglevel,
1668 .get_link = ethtool_op_get_link,
1669 .get_ts_info = cpsw_get_ts_info,
1670 .get_settings = cpsw_get_settings,
1671 .set_settings = cpsw_set_settings,
1672 .get_coalesce = cpsw_get_coalesce,
1673 .set_coalesce = cpsw_set_coalesce,
1674 .get_sset_count = cpsw_get_sset_count,
1675 .get_strings = cpsw_get_strings,
1676 .get_ethtool_stats = cpsw_get_ethtool_stats,
1677 .get_wol = cpsw_get_wol,
1678 .set_wol = cpsw_set_wol,
1681 static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv,
1682 u32 slave_reg_ofs, u32 sliver_reg_ofs)
1684 void __iomem *regs = priv->regs;
1685 int slave_num = slave->slave_num;
1686 struct cpsw_slave_data *data = priv->data.slave_data + slave_num;
1689 slave->regs = regs + slave_reg_ofs;
1690 slave->sliver = regs + sliver_reg_ofs;
1691 slave->port_vlan = data->dual_emac_res_vlan;
1694 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1695 struct platform_device *pdev)
1697 struct device_node *node = pdev->dev.of_node;
1698 struct device_node *slave_node;
1705 if (of_property_read_u32(node, "slaves", &prop)) {
1706 pr_err("Missing slaves property in the DT.\n");
1709 data->slaves = prop;
1711 if (of_property_read_u32(node, "active_slave", &prop)) {
1712 pr_err("Missing active_slave property in the DT.\n");
1715 data->active_slave = prop;
1717 if (of_property_read_u32(node, "cpts_clock_mult", &prop)) {
1718 pr_err("Missing cpts_clock_mult property in the DT.\n");
1721 data->cpts_clock_mult = prop;
1723 if (of_property_read_u32(node, "cpts_clock_shift", &prop)) {
1724 pr_err("Missing cpts_clock_shift property in the DT.\n");
1727 data->cpts_clock_shift = prop;
1729 data->slave_data = devm_kzalloc(&pdev->dev, data->slaves
1730 * sizeof(struct cpsw_slave_data),
1732 if (!data->slave_data)
1735 if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1736 pr_err("Missing cpdma_channels property in the DT.\n");
1739 data->channels = prop;
1741 if (of_property_read_u32(node, "ale_entries", &prop)) {
1742 pr_err("Missing ale_entries property in the DT.\n");
1745 data->ale_entries = prop;
1747 if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1748 pr_err("Missing bd_ram_size property in the DT.\n");
1751 data->bd_ram_size = prop;
1753 if (of_property_read_u32(node, "rx_descs", &prop)) {
1754 pr_err("Missing rx_descs property in the DT.\n");
1757 data->rx_descs = prop;
1759 if (of_property_read_u32(node, "mac_control", &prop)) {
1760 pr_err("Missing mac_control property in the DT.\n");
1763 data->mac_control = prop;
1765 if (of_property_read_bool(node, "dual_emac"))
1766 data->dual_emac = 1;
1769 * Populate all the child nodes here...
1771 ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
1772 /* We do not want to force this, as in some cases may not have child */
1774 pr_warn("Doesn't have any child node\n");
1776 for_each_child_of_node(node, slave_node) {
1777 struct cpsw_slave_data *slave_data = data->slave_data + i;
1778 const void *mac_addr = NULL;
1782 struct device_node *mdio_node;
1783 struct platform_device *mdio;
1785 /* This is no slave child node, continue */
1786 if (strcmp(slave_node->name, "slave"))
1789 parp = of_get_property(slave_node, "phy_id", &lenp);
1790 if ((parp == NULL) || (lenp != (sizeof(void *) * 2))) {
1791 pr_err("Missing slave[%d] phy_id property\n", i);
1794 mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
1795 phyid = be32_to_cpup(parp+1);
1796 mdio = of_find_device_by_node(mdio_node);
1797 snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
1798 PHY_ID_FMT, mdio->name, phyid);
1800 mac_addr = of_get_mac_address(slave_node);
1802 memcpy(slave_data->mac_addr, mac_addr, ETH_ALEN);
1804 slave_data->phy_if = of_get_phy_mode(slave_node);
1806 if (data->dual_emac) {
1807 if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
1809 pr_err("Missing dual_emac_res_vlan in DT.\n");
1810 slave_data->dual_emac_res_vlan = i+1;
1811 pr_err("Using %d as Reserved VLAN for %d slave\n",
1812 slave_data->dual_emac_res_vlan, i);
1814 slave_data->dual_emac_res_vlan = prop;
1824 static int cpsw_probe_dual_emac(struct platform_device *pdev,
1825 struct cpsw_priv *priv)
1827 struct cpsw_platform_data *data = &priv->data;
1828 struct net_device *ndev;
1829 struct cpsw_priv *priv_sl2;
1832 ndev = alloc_etherdev(sizeof(struct cpsw_priv));
1834 pr_err("cpsw: error allocating net_device\n");
1838 priv_sl2 = netdev_priv(ndev);
1839 spin_lock_init(&priv_sl2->lock);
1840 priv_sl2->data = *data;
1841 priv_sl2->pdev = pdev;
1842 priv_sl2->ndev = ndev;
1843 priv_sl2->dev = &ndev->dev;
1844 priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1845 priv_sl2->rx_packet_max = max(rx_packet_max, 128);
1847 if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
1848 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
1850 pr_info("cpsw: Detected MACID = %pM\n", priv_sl2->mac_addr);
1852 random_ether_addr(priv_sl2->mac_addr);
1853 pr_info("cpsw: Random MACID = %pM\n", priv_sl2->mac_addr);
1855 memcpy(ndev->dev_addr, priv_sl2->mac_addr, ETH_ALEN);
1857 priv_sl2->slaves = priv->slaves;
1858 priv_sl2->clk = priv->clk;
1860 priv_sl2->coal_intvl = 0;
1861 priv_sl2->bus_freq_mhz = priv->bus_freq_mhz;
1863 priv_sl2->regs = priv->regs;
1864 priv_sl2->host_port = priv->host_port;
1865 priv_sl2->host_port_regs = priv->host_port_regs;
1866 priv_sl2->wr_regs = priv->wr_regs;
1867 priv_sl2->hw_stats = priv->hw_stats;
1868 priv_sl2->dma = priv->dma;
1869 priv_sl2->txch = priv->txch;
1870 priv_sl2->rxch = priv->rxch;
1871 priv_sl2->ale = priv->ale;
1872 priv_sl2->emac_port = 1;
1873 priv->slaves[1].ndev = ndev;
1874 priv_sl2->cpts = priv->cpts;
1875 priv_sl2->version = priv->version;
1877 for (i = 0; i < priv->num_irqs; i++) {
1878 priv_sl2->irqs_table[i] = priv->irqs_table[i];
1879 priv_sl2->num_irqs = priv->num_irqs;
1881 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1883 ndev->netdev_ops = &cpsw_netdev_ops;
1884 SET_ETHTOOL_OPS(ndev, &cpsw_ethtool_ops);
1885 netif_napi_add(ndev, &priv_sl2->napi, cpsw_poll, CPSW_POLL_WEIGHT);
1887 /* register the network device */
1888 SET_NETDEV_DEV(ndev, &pdev->dev);
1889 ret = register_netdev(ndev);
1891 pr_err("cpsw: error registering net device\n");
1899 static int cpsw_probe(struct platform_device *pdev)
1901 struct cpsw_platform_data *data;
1902 struct net_device *ndev;
1903 struct cpsw_priv *priv;
1904 struct cpdma_params dma_params;
1905 struct cpsw_ale_params ale_params;
1906 void __iomem *ss_regs;
1907 struct resource *res, *ss_res;
1908 u32 slave_offset, sliver_offset, slave_size;
1909 int ret = 0, i, k = 0;
1911 ndev = alloc_etherdev(sizeof(struct cpsw_priv));
1913 pr_err("error allocating net_device\n");
1917 platform_set_drvdata(pdev, ndev);
1918 priv = netdev_priv(ndev);
1919 spin_lock_init(&priv->lock);
1922 priv->dev = &ndev->dev;
1923 priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1924 priv->rx_packet_max = max(rx_packet_max, 128);
1925 priv->cpts = devm_kzalloc(&pdev->dev, sizeof(struct cpts), GFP_KERNEL);
1926 priv->irq_enabled = true;
1928 pr_err("error allocating cpts\n");
1929 goto clean_ndev_ret;
1933 * This may be required here for child devices.
1935 pm_runtime_enable(&pdev->dev);
1937 /* Select default pin state */
1938 pinctrl_pm_select_default_state(&pdev->dev);
1940 if (cpsw_probe_dt(&priv->data, pdev)) {
1941 pr_err("cpsw: platform data missing\n");
1943 goto clean_runtime_disable_ret;
1947 if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
1948 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
1949 pr_info("Detected MACID = %pM\n", priv->mac_addr);
1951 eth_random_addr(priv->mac_addr);
1952 pr_info("Random MACID = %pM\n", priv->mac_addr);
1955 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
1957 priv->slaves = devm_kzalloc(&pdev->dev,
1958 sizeof(struct cpsw_slave) * data->slaves,
1960 if (!priv->slaves) {
1962 goto clean_runtime_disable_ret;
1964 for (i = 0; i < data->slaves; i++)
1965 priv->slaves[i].slave_num = i;
1967 priv->slaves[0].ndev = ndev;
1968 priv->emac_port = 0;
1970 priv->clk = devm_clk_get(&pdev->dev, "fck");
1971 if (IS_ERR(priv->clk)) {
1972 dev_err(priv->dev, "fck is not found\n");
1974 goto clean_runtime_disable_ret;
1976 priv->coal_intvl = 0;
1977 priv->bus_freq_mhz = clk_get_rate(priv->clk) / 1000000;
1979 ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1980 ss_regs = devm_ioremap_resource(&pdev->dev, ss_res);
1981 if (IS_ERR(ss_regs)) {
1982 ret = PTR_ERR(ss_regs);
1983 goto clean_runtime_disable_ret;
1985 priv->regs = ss_regs;
1986 priv->version = __raw_readl(&priv->regs->id_ver);
1987 priv->host_port = HOST_PORT_NUM;
1989 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
1990 priv->wr_regs = devm_ioremap_resource(&pdev->dev, res);
1991 if (IS_ERR(priv->wr_regs)) {
1992 ret = PTR_ERR(priv->wr_regs);
1993 goto clean_runtime_disable_ret;
1996 memset(&dma_params, 0, sizeof(dma_params));
1997 memset(&ale_params, 0, sizeof(ale_params));
1999 switch (priv->version) {
2000 case CPSW_VERSION_1:
2001 priv->host_port_regs = ss_regs + CPSW1_HOST_PORT_OFFSET;
2002 priv->cpts->reg = ss_regs + CPSW1_CPTS_OFFSET;
2003 priv->hw_stats = ss_regs + CPSW1_HW_STATS;
2004 dma_params.dmaregs = ss_regs + CPSW1_CPDMA_OFFSET;
2005 dma_params.txhdp = ss_regs + CPSW1_STATERAM_OFFSET;
2006 ale_params.ale_regs = ss_regs + CPSW1_ALE_OFFSET;
2007 slave_offset = CPSW1_SLAVE_OFFSET;
2008 slave_size = CPSW1_SLAVE_SIZE;
2009 sliver_offset = CPSW1_SLIVER_OFFSET;
2010 dma_params.desc_mem_phys = 0;
2012 case CPSW_VERSION_2:
2013 case CPSW_VERSION_3:
2014 case CPSW_VERSION_4:
2015 priv->host_port_regs = ss_regs + CPSW2_HOST_PORT_OFFSET;
2016 priv->cpts->reg = ss_regs + CPSW2_CPTS_OFFSET;
2017 priv->hw_stats = ss_regs + CPSW2_HW_STATS;
2018 dma_params.dmaregs = ss_regs + CPSW2_CPDMA_OFFSET;
2019 dma_params.txhdp = ss_regs + CPSW2_STATERAM_OFFSET;
2020 ale_params.ale_regs = ss_regs + CPSW2_ALE_OFFSET;
2021 slave_offset = CPSW2_SLAVE_OFFSET;
2022 slave_size = CPSW2_SLAVE_SIZE;
2023 sliver_offset = CPSW2_SLIVER_OFFSET;
2024 dma_params.desc_mem_phys =
2025 (u32 __force) ss_res->start + CPSW2_BD_OFFSET;
2028 dev_err(priv->dev, "unknown version 0x%08x\n", priv->version);
2030 goto clean_runtime_disable_ret;
2032 for (i = 0; i < priv->data.slaves; i++) {
2033 struct cpsw_slave *slave = &priv->slaves[i];
2034 cpsw_slave_init(slave, priv, slave_offset, sliver_offset);
2035 slave_offset += slave_size;
2036 sliver_offset += SLIVER_SIZE;
2039 dma_params.dev = &pdev->dev;
2040 dma_params.rxthresh = dma_params.dmaregs + CPDMA_RXTHRESH;
2041 dma_params.rxfree = dma_params.dmaregs + CPDMA_RXFREE;
2042 dma_params.rxhdp = dma_params.txhdp + CPDMA_RXHDP;
2043 dma_params.txcp = dma_params.txhdp + CPDMA_TXCP;
2044 dma_params.rxcp = dma_params.txhdp + CPDMA_RXCP;
2046 dma_params.num_chan = data->channels;
2047 dma_params.has_soft_reset = true;
2048 dma_params.min_packet_size = CPSW_MIN_PACKET_SIZE;
2049 dma_params.desc_mem_size = data->bd_ram_size;
2050 dma_params.desc_align = 16;
2051 dma_params.has_ext_regs = true;
2052 dma_params.desc_hw_addr = dma_params.desc_mem_phys;
2054 priv->dma = cpdma_ctlr_create(&dma_params);
2056 dev_err(priv->dev, "error initializing dma\n");
2058 goto clean_runtime_disable_ret;
2061 priv->txch = cpdma_chan_create(priv->dma, tx_chan_num(0),
2063 priv->rxch = cpdma_chan_create(priv->dma, rx_chan_num(0),
2066 if (WARN_ON(!priv->txch || !priv->rxch)) {
2067 dev_err(priv->dev, "error initializing dma channels\n");
2072 ale_params.dev = &ndev->dev;
2073 ale_params.ale_ageout = ale_ageout;
2074 ale_params.ale_entries = data->ale_entries;
2075 ale_params.ale_ports = data->slaves;
2077 priv->ale = cpsw_ale_create(&ale_params);
2079 dev_err(priv->dev, "error initializing ale engine\n");
2084 ndev->irq = platform_get_irq(pdev, 0);
2085 if (ndev->irq < 0) {
2086 dev_err(priv->dev, "error getting irq resource\n");
2091 while ((res = platform_get_resource(priv->pdev, IORESOURCE_IRQ, k))) {
2092 for (i = res->start; i <= res->end; i++) {
2093 if (devm_request_irq(&pdev->dev, i, cpsw_interrupt, 0,
2094 dev_name(priv->dev), priv)) {
2095 dev_err(priv->dev, "error attaching irq\n");
2098 priv->irqs_table[k] = i;
2099 priv->num_irqs = k + 1;
2104 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2106 ndev->netdev_ops = &cpsw_netdev_ops;
2107 SET_ETHTOOL_OPS(ndev, &cpsw_ethtool_ops);
2108 netif_napi_add(ndev, &priv->napi, cpsw_poll, CPSW_POLL_WEIGHT);
2110 /* register the network device */
2111 SET_NETDEV_DEV(ndev, &pdev->dev);
2112 ret = register_netdev(ndev);
2114 dev_err(priv->dev, "error registering net device\n");
2119 if (cpts_register(&pdev->dev, priv->cpts,
2120 data->cpts_clock_mult, data->cpts_clock_shift))
2121 dev_err(priv->dev, "error registering cpts device\n");
2123 cpsw_notice(priv, probe, "initialized device (regs %x, irq %d)\n",
2124 ss_res->start, ndev->irq);
2126 if (priv->data.dual_emac) {
2127 ret = cpsw_probe_dual_emac(pdev, priv);
2129 cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
2137 cpsw_ale_destroy(priv->ale);
2139 cpdma_chan_destroy(priv->txch);
2140 cpdma_chan_destroy(priv->rxch);
2141 cpdma_ctlr_destroy(priv->dma);
2142 clean_runtime_disable_ret:
2143 pm_runtime_disable(&pdev->dev);
2145 free_netdev(priv->ndev);
2149 static int cpsw_remove(struct platform_device *pdev)
2151 struct net_device *ndev = platform_get_drvdata(pdev);
2152 struct cpsw_priv *priv = netdev_priv(ndev);
2154 if (priv->data.dual_emac)
2155 unregister_netdev(cpsw_get_slave_ndev(priv, 1));
2156 unregister_netdev(ndev);
2158 cpts_unregister(priv->cpts);
2160 cpsw_ale_destroy(priv->ale);
2161 cpdma_chan_destroy(priv->txch);
2162 cpdma_chan_destroy(priv->rxch);
2163 cpdma_ctlr_destroy(priv->dma);
2164 pm_runtime_disable(&pdev->dev);
2165 if (priv->data.dual_emac)
2166 free_netdev(cpsw_get_slave_ndev(priv, 1));
2171 static int cpsw_suspend(struct device *dev)
2173 struct platform_device *pdev = to_platform_device(dev);
2174 struct net_device *ndev = platform_get_drvdata(pdev);
2175 struct cpsw_priv *priv = netdev_priv(ndev);
2177 if (netif_running(ndev))
2178 cpsw_ndo_stop(ndev);
2180 for_each_slave(priv, soft_reset_slave);
2182 pm_runtime_put_sync(&pdev->dev);
2184 /* Select sleep pin state */
2185 pinctrl_pm_select_sleep_state(&pdev->dev);
2190 static int cpsw_resume(struct device *dev)
2192 struct platform_device *pdev = to_platform_device(dev);
2193 struct net_device *ndev = platform_get_drvdata(pdev);
2195 pm_runtime_get_sync(&pdev->dev);
2197 /* Select default pin state */
2198 pinctrl_pm_select_default_state(&pdev->dev);
2200 if (netif_running(ndev))
2201 cpsw_ndo_open(ndev);
2205 static const struct dev_pm_ops cpsw_pm_ops = {
2206 .suspend = cpsw_suspend,
2207 .resume = cpsw_resume,
2210 static const struct of_device_id cpsw_of_mtable[] = {
2211 { .compatible = "ti,cpsw", },
2214 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
2216 static struct platform_driver cpsw_driver = {
2219 .owner = THIS_MODULE,
2221 .of_match_table = cpsw_of_mtable,
2223 .probe = cpsw_probe,
2224 .remove = cpsw_remove,
2227 static int __init cpsw_init(void)
2229 return platform_driver_register(&cpsw_driver);
2231 late_initcall(cpsw_init);
2233 static void __exit cpsw_exit(void)
2235 platform_driver_unregister(&cpsw_driver);
2237 module_exit(cpsw_exit);
2239 MODULE_LICENSE("GPL");
2240 MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
2241 MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
2242 MODULE_DESCRIPTION("TI CPSW Ethernet driver");