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>
32 #include <linux/gpio.h>
34 #include <linux/of_mdio.h>
35 #include <linux/of_net.h>
36 #include <linux/of_device.h>
37 #include <linux/if_vlan.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_slave_index(priv) \
144 ((priv->data.dual_emac) ? priv->emac_port : \
145 priv->data.active_slave)
147 static int debug_level;
148 module_param(debug_level, int, 0);
149 MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)");
151 static int ale_ageout = 10;
152 module_param(ale_ageout, int, 0);
153 MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)");
155 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
156 module_param(rx_packet_max, int, 0);
157 MODULE_PARM_DESC(rx_packet_max, "maximum receive packet size (bytes)");
159 struct cpsw_wr_regs {
179 struct cpsw_ss_regs {
196 #define CPSW1_MAX_BLKS 0x00 /* Maximum FIFO Blocks */
197 #define CPSW1_BLK_CNT 0x04 /* FIFO Block Usage Count (Read Only) */
198 #define CPSW1_TX_IN_CTL 0x08 /* Transmit FIFO Control */
199 #define CPSW1_PORT_VLAN 0x0c /* VLAN Register */
200 #define CPSW1_TX_PRI_MAP 0x10 /* Tx Header Priority to Switch Pri Mapping */
201 #define CPSW1_TS_CTL 0x14 /* Time Sync Control */
202 #define CPSW1_TS_SEQ_LTYPE 0x18 /* Time Sync Sequence ID Offset and Msg Type */
203 #define CPSW1_TS_VLAN 0x1c /* Time Sync VLAN1 and VLAN2 */
206 #define CPSW2_CONTROL 0x00 /* Control Register */
207 #define CPSW2_MAX_BLKS 0x08 /* Maximum FIFO Blocks */
208 #define CPSW2_BLK_CNT 0x0c /* FIFO Block Usage Count (Read Only) */
209 #define CPSW2_TX_IN_CTL 0x10 /* Transmit FIFO Control */
210 #define CPSW2_PORT_VLAN 0x14 /* VLAN Register */
211 #define CPSW2_TX_PRI_MAP 0x18 /* Tx Header Priority to Switch Pri Mapping */
212 #define CPSW2_TS_SEQ_MTYPE 0x1c /* Time Sync Sequence ID Offset and Msg Type */
214 /* CPSW_PORT_V1 and V2 */
215 #define SA_LO 0x20 /* CPGMAC_SL Source Address Low */
216 #define SA_HI 0x24 /* CPGMAC_SL Source Address High */
217 #define SEND_PERCENT 0x28 /* Transmit Queue Send Percentages */
219 /* CPSW_PORT_V2 only */
220 #define RX_DSCP_PRI_MAP0 0x30 /* Rx DSCP Priority to Rx Packet Mapping */
221 #define RX_DSCP_PRI_MAP1 0x34 /* Rx DSCP Priority to Rx Packet Mapping */
222 #define RX_DSCP_PRI_MAP2 0x38 /* Rx DSCP Priority to Rx Packet Mapping */
223 #define RX_DSCP_PRI_MAP3 0x3c /* Rx DSCP Priority to Rx Packet Mapping */
224 #define RX_DSCP_PRI_MAP4 0x40 /* Rx DSCP Priority to Rx Packet Mapping */
225 #define RX_DSCP_PRI_MAP5 0x44 /* Rx DSCP Priority to Rx Packet Mapping */
226 #define RX_DSCP_PRI_MAP6 0x48 /* Rx DSCP Priority to Rx Packet Mapping */
227 #define RX_DSCP_PRI_MAP7 0x4c /* Rx DSCP Priority to Rx Packet Mapping */
229 /* Bit definitions for the CPSW2_CONTROL register */
230 #define PASS_PRI_TAGGED (1<<24) /* Pass Priority Tagged */
231 #define VLAN_LTYPE2_EN (1<<21) /* VLAN LTYPE 2 enable */
232 #define VLAN_LTYPE1_EN (1<<20) /* VLAN LTYPE 1 enable */
233 #define DSCP_PRI_EN (1<<16) /* DSCP Priority Enable */
234 #define TS_320 (1<<14) /* Time Sync Dest Port 320 enable */
235 #define TS_319 (1<<13) /* Time Sync Dest Port 319 enable */
236 #define TS_132 (1<<12) /* Time Sync Dest IP Addr 132 enable */
237 #define TS_131 (1<<11) /* Time Sync Dest IP Addr 131 enable */
238 #define TS_130 (1<<10) /* Time Sync Dest IP Addr 130 enable */
239 #define TS_129 (1<<9) /* Time Sync Dest IP Addr 129 enable */
240 #define TS_TTL_NONZERO (1<<8) /* Time Sync Time To Live Non-zero enable */
241 #define TS_ANNEX_F_EN (1<<6) /* Time Sync Annex F enable */
242 #define TS_ANNEX_D_EN (1<<4) /* Time Sync Annex D enable */
243 #define TS_LTYPE2_EN (1<<3) /* Time Sync LTYPE 2 enable */
244 #define TS_LTYPE1_EN (1<<2) /* Time Sync LTYPE 1 enable */
245 #define TS_TX_EN (1<<1) /* Time Sync Transmit Enable */
246 #define TS_RX_EN (1<<0) /* Time Sync Receive Enable */
248 #define CTRL_V2_TS_BITS \
249 (TS_320 | TS_319 | TS_132 | TS_131 | TS_130 | TS_129 |\
250 TS_TTL_NONZERO | TS_ANNEX_D_EN | TS_LTYPE1_EN)
252 #define CTRL_V2_ALL_TS_MASK (CTRL_V2_TS_BITS | TS_TX_EN | TS_RX_EN)
253 #define CTRL_V2_TX_TS_BITS (CTRL_V2_TS_BITS | TS_TX_EN)
254 #define CTRL_V2_RX_TS_BITS (CTRL_V2_TS_BITS | TS_RX_EN)
257 #define CTRL_V3_TS_BITS \
258 (TS_320 | TS_319 | TS_132 | TS_131 | TS_130 | TS_129 |\
259 TS_TTL_NONZERO | TS_ANNEX_F_EN | TS_ANNEX_D_EN |\
262 #define CTRL_V3_ALL_TS_MASK (CTRL_V3_TS_BITS | TS_TX_EN | TS_RX_EN)
263 #define CTRL_V3_TX_TS_BITS (CTRL_V3_TS_BITS | TS_TX_EN)
264 #define CTRL_V3_RX_TS_BITS (CTRL_V3_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;
352 struct device_node *phy_node;
357 static inline u32 slave_read(struct cpsw_slave *slave, u32 offset)
359 return __raw_readl(slave->regs + offset);
362 static inline void slave_write(struct cpsw_slave *slave, u32 val, u32 offset)
364 __raw_writel(val, slave->regs + offset);
369 struct platform_device *pdev;
370 struct net_device *ndev;
371 struct napi_struct napi_rx;
372 struct napi_struct napi_tx;
374 struct cpsw_platform_data data;
375 struct cpsw_ss_regs __iomem *regs;
376 struct cpsw_wr_regs __iomem *wr_regs;
377 u8 __iomem *hw_stats;
378 struct cpsw_host_regs __iomem *host_port_regs;
386 u8 mac_addr[ETH_ALEN];
387 struct cpsw_slave *slaves;
388 struct cpdma_ctlr *dma;
389 struct cpdma_chan *txch, *rxch;
390 struct cpsw_ale *ale;
394 bool rx_irq_disabled;
395 bool tx_irq_disabled;
396 /* snapshot of IRQ numbers */
404 char stat_string[ETH_GSTRING_LEN];
416 #define CPSW_STAT(m) CPSW_STATS, \
417 sizeof(((struct cpsw_hw_stats *)0)->m), \
418 offsetof(struct cpsw_hw_stats, m)
419 #define CPDMA_RX_STAT(m) CPDMA_RX_STATS, \
420 sizeof(((struct cpdma_chan_stats *)0)->m), \
421 offsetof(struct cpdma_chan_stats, m)
422 #define CPDMA_TX_STAT(m) CPDMA_TX_STATS, \
423 sizeof(((struct cpdma_chan_stats *)0)->m), \
424 offsetof(struct cpdma_chan_stats, m)
426 static const struct cpsw_stats cpsw_gstrings_stats[] = {
427 { "Good Rx Frames", CPSW_STAT(rxgoodframes) },
428 { "Broadcast Rx Frames", CPSW_STAT(rxbroadcastframes) },
429 { "Multicast Rx Frames", CPSW_STAT(rxmulticastframes) },
430 { "Pause Rx Frames", CPSW_STAT(rxpauseframes) },
431 { "Rx CRC Errors", CPSW_STAT(rxcrcerrors) },
432 { "Rx Align/Code Errors", CPSW_STAT(rxaligncodeerrors) },
433 { "Oversize Rx Frames", CPSW_STAT(rxoversizedframes) },
434 { "Rx Jabbers", CPSW_STAT(rxjabberframes) },
435 { "Undersize (Short) Rx Frames", CPSW_STAT(rxundersizedframes) },
436 { "Rx Fragments", CPSW_STAT(rxfragments) },
437 { "Rx Octets", CPSW_STAT(rxoctets) },
438 { "Good Tx Frames", CPSW_STAT(txgoodframes) },
439 { "Broadcast Tx Frames", CPSW_STAT(txbroadcastframes) },
440 { "Multicast Tx Frames", CPSW_STAT(txmulticastframes) },
441 { "Pause Tx Frames", CPSW_STAT(txpauseframes) },
442 { "Deferred Tx Frames", CPSW_STAT(txdeferredframes) },
443 { "Collisions", CPSW_STAT(txcollisionframes) },
444 { "Single Collision Tx Frames", CPSW_STAT(txsinglecollframes) },
445 { "Multiple Collision Tx Frames", CPSW_STAT(txmultcollframes) },
446 { "Excessive Collisions", CPSW_STAT(txexcessivecollisions) },
447 { "Late Collisions", CPSW_STAT(txlatecollisions) },
448 { "Tx Underrun", CPSW_STAT(txunderrun) },
449 { "Carrier Sense Errors", CPSW_STAT(txcarriersenseerrors) },
450 { "Tx Octets", CPSW_STAT(txoctets) },
451 { "Rx + Tx 64 Octet Frames", CPSW_STAT(octetframes64) },
452 { "Rx + Tx 65-127 Octet Frames", CPSW_STAT(octetframes65t127) },
453 { "Rx + Tx 128-255 Octet Frames", CPSW_STAT(octetframes128t255) },
454 { "Rx + Tx 256-511 Octet Frames", CPSW_STAT(octetframes256t511) },
455 { "Rx + Tx 512-1023 Octet Frames", CPSW_STAT(octetframes512t1023) },
456 { "Rx + Tx 1024-Up Octet Frames", CPSW_STAT(octetframes1024tup) },
457 { "Net Octets", CPSW_STAT(netoctets) },
458 { "Rx Start of Frame Overruns", CPSW_STAT(rxsofoverruns) },
459 { "Rx Middle of Frame Overruns", CPSW_STAT(rxmofoverruns) },
460 { "Rx DMA Overruns", CPSW_STAT(rxdmaoverruns) },
461 { "Rx DMA chan: head_enqueue", CPDMA_RX_STAT(head_enqueue) },
462 { "Rx DMA chan: tail_enqueue", CPDMA_RX_STAT(tail_enqueue) },
463 { "Rx DMA chan: pad_enqueue", CPDMA_RX_STAT(pad_enqueue) },
464 { "Rx DMA chan: misqueued", CPDMA_RX_STAT(misqueued) },
465 { "Rx DMA chan: desc_alloc_fail", CPDMA_RX_STAT(desc_alloc_fail) },
466 { "Rx DMA chan: pad_alloc_fail", CPDMA_RX_STAT(pad_alloc_fail) },
467 { "Rx DMA chan: runt_receive_buf", CPDMA_RX_STAT(runt_receive_buff) },
468 { "Rx DMA chan: runt_transmit_buf", CPDMA_RX_STAT(runt_transmit_buff) },
469 { "Rx DMA chan: empty_dequeue", CPDMA_RX_STAT(empty_dequeue) },
470 { "Rx DMA chan: busy_dequeue", CPDMA_RX_STAT(busy_dequeue) },
471 { "Rx DMA chan: good_dequeue", CPDMA_RX_STAT(good_dequeue) },
472 { "Rx DMA chan: requeue", CPDMA_RX_STAT(requeue) },
473 { "Rx DMA chan: teardown_dequeue", CPDMA_RX_STAT(teardown_dequeue) },
474 { "Tx DMA chan: head_enqueue", CPDMA_TX_STAT(head_enqueue) },
475 { "Tx DMA chan: tail_enqueue", CPDMA_TX_STAT(tail_enqueue) },
476 { "Tx DMA chan: pad_enqueue", CPDMA_TX_STAT(pad_enqueue) },
477 { "Tx DMA chan: misqueued", CPDMA_TX_STAT(misqueued) },
478 { "Tx DMA chan: desc_alloc_fail", CPDMA_TX_STAT(desc_alloc_fail) },
479 { "Tx DMA chan: pad_alloc_fail", CPDMA_TX_STAT(pad_alloc_fail) },
480 { "Tx DMA chan: runt_receive_buf", CPDMA_TX_STAT(runt_receive_buff) },
481 { "Tx DMA chan: runt_transmit_buf", CPDMA_TX_STAT(runt_transmit_buff) },
482 { "Tx DMA chan: empty_dequeue", CPDMA_TX_STAT(empty_dequeue) },
483 { "Tx DMA chan: busy_dequeue", CPDMA_TX_STAT(busy_dequeue) },
484 { "Tx DMA chan: good_dequeue", CPDMA_TX_STAT(good_dequeue) },
485 { "Tx DMA chan: requeue", CPDMA_TX_STAT(requeue) },
486 { "Tx DMA chan: teardown_dequeue", CPDMA_TX_STAT(teardown_dequeue) },
489 #define CPSW_STATS_LEN ARRAY_SIZE(cpsw_gstrings_stats)
491 #define napi_to_priv(napi) container_of(napi, struct cpsw_priv, napi)
492 #define for_each_slave(priv, func, arg...) \
494 struct cpsw_slave *slave; \
496 if (priv->data.dual_emac) \
497 (func)((priv)->slaves + priv->emac_port, ##arg);\
499 for (n = (priv)->data.slaves, \
500 slave = (priv)->slaves; \
502 (func)(slave++, ##arg); \
504 #define cpsw_get_slave_ndev(priv, __slave_no__) \
505 ((__slave_no__ < priv->data.slaves) ? \
506 priv->slaves[__slave_no__].ndev : NULL)
507 #define cpsw_get_slave_priv(priv, __slave_no__) \
508 (((__slave_no__ < priv->data.slaves) && \
509 (priv->slaves[__slave_no__].ndev)) ? \
510 netdev_priv(priv->slaves[__slave_no__].ndev) : NULL) \
512 #define cpsw_dual_emac_src_port_detect(status, priv, ndev, skb) \
514 if (!priv->data.dual_emac) \
516 if (CPDMA_RX_SOURCE_PORT(status) == 1) { \
517 ndev = cpsw_get_slave_ndev(priv, 0); \
518 priv = netdev_priv(ndev); \
520 } else if (CPDMA_RX_SOURCE_PORT(status) == 2) { \
521 ndev = cpsw_get_slave_ndev(priv, 1); \
522 priv = netdev_priv(ndev); \
526 #define cpsw_add_mcast(priv, addr) \
528 if (priv->data.dual_emac) { \
529 struct cpsw_slave *slave = priv->slaves + \
531 int slave_port = cpsw_get_slave_port(priv, \
533 cpsw_ale_add_mcast(priv->ale, addr, \
534 1 << slave_port | 1 << priv->host_port, \
535 ALE_VLAN, slave->port_vlan, 0); \
537 cpsw_ale_add_mcast(priv->ale, addr, \
538 ALE_ALL_PORTS << priv->host_port, \
543 static inline int cpsw_get_slave_port(struct cpsw_priv *priv, u32 slave_num)
545 if (priv->host_port == 0)
546 return slave_num + 1;
551 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
553 struct cpsw_priv *priv = netdev_priv(ndev);
554 struct cpsw_ale *ale = priv->ale;
557 if (priv->data.dual_emac) {
560 /* Enabling promiscuous mode for one interface will be
561 * common for both the interface as the interface shares
562 * the same hardware resource.
564 for (i = 0; i < priv->data.slaves; i++)
565 if (priv->slaves[i].ndev->flags & IFF_PROMISC)
568 if (!enable && flag) {
570 dev_err(&ndev->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
575 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 1);
577 dev_dbg(&ndev->dev, "promiscuity enabled\n");
580 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 0);
581 dev_dbg(&ndev->dev, "promiscuity disabled\n");
585 unsigned long timeout = jiffies + HZ;
587 /* Disable Learn for all ports (host is port 0 and slaves are port 1 and up */
588 for (i = 0; i <= priv->data.slaves; i++) {
589 cpsw_ale_control_set(ale, i,
590 ALE_PORT_NOLEARN, 1);
591 cpsw_ale_control_set(ale, i,
592 ALE_PORT_NO_SA_UPDATE, 1);
595 /* Clear All Untouched entries */
596 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
599 if (cpsw_ale_control_get(ale, 0, ALE_AGEOUT))
601 } while (time_after(timeout, jiffies));
602 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
604 /* Clear all mcast from ALE */
605 cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS <<
606 priv->host_port, -1);
608 /* Flood All Unicast Packets to Host port */
609 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1);
610 dev_dbg(&ndev->dev, "promiscuity enabled\n");
612 /* Don't Flood All Unicast Packets to Host port */
613 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);
615 /* Enable Learn for all ports (host is port 0 and slaves are port 1 and up */
616 for (i = 0; i <= priv->data.slaves; i++) {
617 cpsw_ale_control_set(ale, i,
618 ALE_PORT_NOLEARN, 0);
619 cpsw_ale_control_set(ale, i,
620 ALE_PORT_NO_SA_UPDATE, 0);
622 dev_dbg(&ndev->dev, "promiscuity disabled\n");
627 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
629 struct cpsw_priv *priv = netdev_priv(ndev);
632 if (priv->data.dual_emac)
633 vid = priv->slaves[priv->emac_port].port_vlan;
635 vid = priv->data.default_vlan;
637 if (ndev->flags & IFF_PROMISC) {
638 /* Enable promiscuous mode */
639 cpsw_set_promiscious(ndev, true);
640 cpsw_ale_set_allmulti(priv->ale, IFF_ALLMULTI);
643 /* Disable promiscuous mode */
644 cpsw_set_promiscious(ndev, false);
647 /* Restore allmulti on vlans if necessary */
648 cpsw_ale_set_allmulti(priv->ale, priv->ndev->flags & IFF_ALLMULTI);
650 /* Clear all mcast from ALE */
651 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, instead 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_tx_interrupt(int irq, void *dev_id)
759 struct cpsw_priv *priv = dev_id;
761 writel(0, &priv->wr_regs->tx_en);
762 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
764 if (priv->quirk_irq) {
765 disable_irq_nosync(priv->irqs_table[1]);
766 priv->tx_irq_disabled = true;
769 napi_schedule(&priv->napi_tx);
773 static irqreturn_t cpsw_rx_interrupt(int irq, void *dev_id)
775 struct cpsw_priv *priv = dev_id;
777 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
778 writel(0, &priv->wr_regs->rx_en);
780 if (priv->quirk_irq) {
781 disable_irq_nosync(priv->irqs_table[0]);
782 priv->rx_irq_disabled = true;
785 napi_schedule(&priv->napi_rx);
789 static int cpsw_tx_poll(struct napi_struct *napi_tx, int budget)
791 struct cpsw_priv *priv = napi_to_priv(napi_tx);
794 num_tx = cpdma_chan_process(priv->txch, budget);
795 if (num_tx < budget) {
796 napi_complete(napi_tx);
797 writel(0xff, &priv->wr_regs->tx_en);
798 if (priv->quirk_irq && priv->tx_irq_disabled) {
799 priv->tx_irq_disabled = false;
800 enable_irq(priv->irqs_table[1]);
805 cpsw_dbg(priv, intr, "poll %d tx pkts\n", num_tx);
810 static int cpsw_rx_poll(struct napi_struct *napi_rx, int budget)
812 struct cpsw_priv *priv = napi_to_priv(napi_rx);
815 num_rx = cpdma_chan_process(priv->rxch, budget);
816 if (num_rx < budget) {
817 napi_complete(napi_rx);
818 writel(0xff, &priv->wr_regs->rx_en);
819 if (priv->quirk_irq && priv->rx_irq_disabled) {
820 priv->rx_irq_disabled = false;
821 enable_irq(priv->irqs_table[0]);
826 cpsw_dbg(priv, intr, "poll %d rx pkts\n", num_rx);
831 static inline void soft_reset(const char *module, void __iomem *reg)
833 unsigned long timeout = jiffies + HZ;
835 __raw_writel(1, reg);
838 } while ((__raw_readl(reg) & 1) && time_after(timeout, jiffies));
840 WARN(__raw_readl(reg) & 1, "failed to soft-reset %s\n", module);
843 #define mac_hi(mac) (((mac)[0] << 0) | ((mac)[1] << 8) | \
844 ((mac)[2] << 16) | ((mac)[3] << 24))
845 #define mac_lo(mac) (((mac)[4] << 0) | ((mac)[5] << 8))
847 static void cpsw_set_slave_mac(struct cpsw_slave *slave,
848 struct cpsw_priv *priv)
850 slave_write(slave, mac_hi(priv->mac_addr), SA_HI);
851 slave_write(slave, mac_lo(priv->mac_addr), SA_LO);
854 static void _cpsw_adjust_link(struct cpsw_slave *slave,
855 struct cpsw_priv *priv, bool *link)
857 struct phy_device *phy = slave->phy;
864 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
867 mac_control = priv->data.mac_control;
869 /* enable forwarding */
870 cpsw_ale_control_set(priv->ale, slave_port,
871 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
873 if (phy->speed == 1000)
874 mac_control |= BIT(7); /* GIGABITEN */
876 mac_control |= BIT(0); /* FULLDUPLEXEN */
878 /* set speed_in input in case RMII mode is used in 100Mbps */
879 if (phy->speed == 100)
880 mac_control |= BIT(15);
881 else if (phy->speed == 10)
882 mac_control |= BIT(18); /* In Band mode */
885 mac_control |= BIT(3);
888 mac_control |= BIT(4);
893 /* disable forwarding */
894 cpsw_ale_control_set(priv->ale, slave_port,
895 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
898 if (mac_control != slave->mac_control) {
899 phy_print_status(phy);
900 __raw_writel(mac_control, &slave->sliver->mac_control);
903 slave->mac_control = mac_control;
906 static void cpsw_adjust_link(struct net_device *ndev)
908 struct cpsw_priv *priv = netdev_priv(ndev);
911 for_each_slave(priv, _cpsw_adjust_link, priv, &link);
914 netif_carrier_on(ndev);
915 if (netif_running(ndev))
916 netif_wake_queue(ndev);
918 netif_carrier_off(ndev);
919 netif_stop_queue(ndev);
923 static int cpsw_get_coalesce(struct net_device *ndev,
924 struct ethtool_coalesce *coal)
926 struct cpsw_priv *priv = netdev_priv(ndev);
928 coal->rx_coalesce_usecs = priv->coal_intvl;
932 static int cpsw_set_coalesce(struct net_device *ndev,
933 struct ethtool_coalesce *coal)
935 struct cpsw_priv *priv = netdev_priv(ndev);
937 u32 num_interrupts = 0;
942 coal_intvl = coal->rx_coalesce_usecs;
944 int_ctrl = readl(&priv->wr_regs->int_control);
945 prescale = priv->bus_freq_mhz * 4;
947 if (!coal->rx_coalesce_usecs) {
948 int_ctrl &= ~(CPSW_INTPRESCALE_MASK | CPSW_INTPACEEN);
952 if (coal_intvl < CPSW_CMINTMIN_INTVL)
953 coal_intvl = CPSW_CMINTMIN_INTVL;
955 if (coal_intvl > CPSW_CMINTMAX_INTVL) {
956 /* Interrupt pacer works with 4us Pulse, we can
957 * throttle further by dilating the 4us pulse.
959 addnl_dvdr = CPSW_INTPRESCALE_MASK / prescale;
961 if (addnl_dvdr > 1) {
962 prescale *= addnl_dvdr;
963 if (coal_intvl > (CPSW_CMINTMAX_INTVL * addnl_dvdr))
964 coal_intvl = (CPSW_CMINTMAX_INTVL
968 coal_intvl = CPSW_CMINTMAX_INTVL;
972 num_interrupts = (1000 * addnl_dvdr) / coal_intvl;
973 writel(num_interrupts, &priv->wr_regs->rx_imax);
974 writel(num_interrupts, &priv->wr_regs->tx_imax);
976 int_ctrl |= CPSW_INTPACEEN;
977 int_ctrl &= (~CPSW_INTPRESCALE_MASK);
978 int_ctrl |= (prescale & CPSW_INTPRESCALE_MASK);
981 writel(int_ctrl, &priv->wr_regs->int_control);
983 cpsw_notice(priv, timer, "Set coalesce to %d usecs.\n", coal_intvl);
984 if (priv->data.dual_emac) {
987 for (i = 0; i < priv->data.slaves; i++) {
988 priv = netdev_priv(priv->slaves[i].ndev);
989 priv->coal_intvl = coal_intvl;
992 priv->coal_intvl = coal_intvl;
998 static int cpsw_get_sset_count(struct net_device *ndev, int sset)
1002 return CPSW_STATS_LEN;
1008 static void cpsw_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
1013 switch (stringset) {
1015 for (i = 0; i < CPSW_STATS_LEN; i++) {
1016 memcpy(p, cpsw_gstrings_stats[i].stat_string,
1018 p += ETH_GSTRING_LEN;
1024 static void cpsw_get_ethtool_stats(struct net_device *ndev,
1025 struct ethtool_stats *stats, u64 *data)
1027 struct cpsw_priv *priv = netdev_priv(ndev);
1028 struct cpdma_chan_stats rx_stats;
1029 struct cpdma_chan_stats tx_stats;
1034 /* Collect Davinci CPDMA stats for Rx and Tx Channel */
1035 cpdma_chan_get_stats(priv->rxch, &rx_stats);
1036 cpdma_chan_get_stats(priv->txch, &tx_stats);
1038 for (i = 0; i < CPSW_STATS_LEN; i++) {
1039 switch (cpsw_gstrings_stats[i].type) {
1041 val = readl(priv->hw_stats +
1042 cpsw_gstrings_stats[i].stat_offset);
1046 case CPDMA_RX_STATS:
1047 p = (u8 *)&rx_stats +
1048 cpsw_gstrings_stats[i].stat_offset;
1049 data[i] = *(u32 *)p;
1052 case CPDMA_TX_STATS:
1053 p = (u8 *)&tx_stats +
1054 cpsw_gstrings_stats[i].stat_offset;
1055 data[i] = *(u32 *)p;
1061 static int cpsw_common_res_usage_state(struct cpsw_priv *priv)
1064 u32 usage_count = 0;
1066 if (!priv->data.dual_emac)
1069 for (i = 0; i < priv->data.slaves; i++)
1070 if (priv->slaves[i].open_stat)
1076 static inline int cpsw_tx_packet_submit(struct net_device *ndev,
1077 struct cpsw_priv *priv, struct sk_buff *skb)
1079 if (!priv->data.dual_emac)
1080 return cpdma_chan_submit(priv->txch, skb, skb->data,
1083 if (ndev == cpsw_get_slave_ndev(priv, 0))
1084 return cpdma_chan_submit(priv->txch, skb, skb->data,
1087 return cpdma_chan_submit(priv->txch, skb, skb->data,
1091 static inline void cpsw_add_dual_emac_def_ale_entries(
1092 struct cpsw_priv *priv, struct cpsw_slave *slave,
1095 u32 port_mask = 1 << slave_port | 1 << priv->host_port;
1097 if (priv->version == CPSW_VERSION_1)
1098 slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
1100 slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
1101 cpsw_ale_add_vlan(priv->ale, slave->port_vlan, port_mask,
1102 port_mask, port_mask, 0);
1103 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1104 port_mask, ALE_VLAN, slave->port_vlan, 0);
1105 cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1106 priv->host_port, ALE_VLAN | ALE_SECURE, slave->port_vlan);
1109 static void soft_reset_slave(struct cpsw_slave *slave)
1113 snprintf(name, sizeof(name), "slave-%d", slave->slave_num);
1114 soft_reset(name, &slave->sliver->soft_reset);
1117 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
1121 soft_reset_slave(slave);
1123 /* setup priority mapping */
1124 __raw_writel(RX_PRIORITY_MAPPING, &slave->sliver->rx_pri_map);
1126 switch (priv->version) {
1127 case CPSW_VERSION_1:
1128 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
1130 case CPSW_VERSION_2:
1131 case CPSW_VERSION_3:
1132 case CPSW_VERSION_4:
1133 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
1137 /* setup max packet size, and mac address */
1138 __raw_writel(priv->rx_packet_max, &slave->sliver->rx_maxlen);
1139 cpsw_set_slave_mac(slave, priv);
1141 slave->mac_control = 0; /* no link yet */
1143 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1145 if (priv->data.dual_emac)
1146 cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
1148 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1149 1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
1151 if (slave->phy_node)
1152 slave->phy = of_phy_connect(priv->ndev, slave->phy_node,
1153 &cpsw_adjust_link, 0, slave->data->phy_if);
1155 slave->phy = phy_connect(priv->ndev, slave->data->phy_id,
1156 &cpsw_adjust_link, slave->data->phy_if);
1157 if (IS_ERR(slave->phy)) {
1158 dev_err(priv->dev, "phy %s not found on slave %d\n",
1159 slave->data->phy_id, slave->slave_num);
1162 phy_attached_info(slave->phy);
1164 phy_start(slave->phy);
1166 /* Configure GMII_SEL register */
1167 cpsw_phy_sel(&priv->pdev->dev, slave->phy->interface,
1172 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
1174 const int vlan = priv->data.default_vlan;
1175 const int port = priv->host_port;
1178 int unreg_mcast_mask;
1180 reg = (priv->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
1183 writel(vlan, &priv->host_port_regs->port_vlan);
1185 for (i = 0; i < priv->data.slaves; i++)
1186 slave_write(priv->slaves + i, vlan, reg);
1188 if (priv->ndev->flags & IFF_ALLMULTI)
1189 unreg_mcast_mask = ALE_ALL_PORTS;
1191 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1193 cpsw_ale_add_vlan(priv->ale, vlan, ALE_ALL_PORTS << port,
1194 ALE_ALL_PORTS << port, ALE_ALL_PORTS << port,
1195 unreg_mcast_mask << port);
1198 static void cpsw_init_host_port(struct cpsw_priv *priv)
1203 /* soft reset the controller and initialize ale */
1204 soft_reset("cpsw", &priv->regs->soft_reset);
1205 cpsw_ale_start(priv->ale);
1207 /* switch to vlan unaware mode */
1208 cpsw_ale_control_set(priv->ale, priv->host_port, ALE_VLAN_AWARE,
1209 CPSW_ALE_VLAN_AWARE);
1210 control_reg = readl(&priv->regs->control);
1211 control_reg |= CPSW_VLAN_AWARE;
1212 writel(control_reg, &priv->regs->control);
1213 fifo_mode = (priv->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
1214 CPSW_FIFO_NORMAL_MODE;
1215 writel(fifo_mode, &priv->host_port_regs->tx_in_ctl);
1217 /* setup host port priority mapping */
1218 __raw_writel(CPDMA_TX_PRIORITY_MAP,
1219 &priv->host_port_regs->cpdma_tx_pri_map);
1220 __raw_writel(0, &priv->host_port_regs->cpdma_rx_chan_map);
1222 cpsw_ale_control_set(priv->ale, priv->host_port,
1223 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
1225 if (!priv->data.dual_emac) {
1226 cpsw_ale_add_ucast(priv->ale, priv->mac_addr, priv->host_port,
1228 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1229 1 << priv->host_port, 0, 0, ALE_MCAST_FWD_2);
1233 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_priv *priv)
1237 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1241 phy_stop(slave->phy);
1242 phy_disconnect(slave->phy);
1244 cpsw_ale_control_set(priv->ale, slave_port,
1245 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
1248 static int cpsw_ndo_open(struct net_device *ndev)
1250 struct cpsw_priv *priv = netdev_priv(ndev);
1254 if (!cpsw_common_res_usage_state(priv))
1255 cpsw_intr_disable(priv);
1256 netif_carrier_off(ndev);
1258 pm_runtime_get_sync(&priv->pdev->dev);
1260 reg = priv->version;
1262 dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
1263 CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
1264 CPSW_RTL_VERSION(reg));
1266 /* initialize host and slave ports */
1267 if (!cpsw_common_res_usage_state(priv))
1268 cpsw_init_host_port(priv);
1269 for_each_slave(priv, cpsw_slave_open, priv);
1271 /* Add default VLAN */
1272 if (!priv->data.dual_emac)
1273 cpsw_add_default_vlan(priv);
1275 cpsw_ale_add_vlan(priv->ale, priv->data.default_vlan,
1276 ALE_ALL_PORTS << priv->host_port,
1277 ALE_ALL_PORTS << priv->host_port, 0, 0);
1279 if (!cpsw_common_res_usage_state(priv)) {
1280 struct cpsw_priv *priv_sl0 = cpsw_get_slave_priv(priv, 0);
1282 /* setup tx dma to fixed prio and zero offset */
1283 cpdma_control_set(priv->dma, CPDMA_TX_PRIO_FIXED, 1);
1284 cpdma_control_set(priv->dma, CPDMA_RX_BUFFER_OFFSET, 0);
1286 /* disable priority elevation */
1287 __raw_writel(0, &priv->regs->ptype);
1289 /* enable statistics collection only on all ports */
1290 __raw_writel(0x7, &priv->regs->stat_port_en);
1292 /* Enable internal fifo flow control */
1293 writel(0x7, &priv->regs->flow_control);
1295 napi_enable(&priv_sl0->napi_rx);
1296 napi_enable(&priv_sl0->napi_tx);
1298 if (priv_sl0->tx_irq_disabled) {
1299 priv_sl0->tx_irq_disabled = false;
1300 enable_irq(priv->irqs_table[1]);
1303 if (priv_sl0->rx_irq_disabled) {
1304 priv_sl0->rx_irq_disabled = false;
1305 enable_irq(priv->irqs_table[0]);
1308 if (WARN_ON(!priv->data.rx_descs))
1309 priv->data.rx_descs = 128;
1311 for (i = 0; i < priv->data.rx_descs; i++) {
1312 struct sk_buff *skb;
1315 skb = __netdev_alloc_skb_ip_align(priv->ndev,
1316 priv->rx_packet_max, GFP_KERNEL);
1319 ret = cpdma_chan_submit(priv->rxch, skb, skb->data,
1320 skb_tailroom(skb), 0);
1326 /* continue even if we didn't manage to submit all
1329 cpsw_info(priv, ifup, "submitted %d rx descriptors\n", i);
1331 if (cpts_register(&priv->pdev->dev, priv->cpts,
1332 priv->data.cpts_clock_mult,
1333 priv->data.cpts_clock_shift))
1334 dev_err(priv->dev, "error registering cpts device\n");
1338 /* Enable Interrupt pacing if configured */
1339 if (priv->coal_intvl != 0) {
1340 struct ethtool_coalesce coal;
1342 coal.rx_coalesce_usecs = (priv->coal_intvl << 4);
1343 cpsw_set_coalesce(ndev, &coal);
1346 cpdma_ctlr_start(priv->dma);
1347 cpsw_intr_enable(priv);
1349 if (priv->data.dual_emac)
1350 priv->slaves[priv->emac_port].open_stat = true;
1354 cpdma_ctlr_stop(priv->dma);
1355 for_each_slave(priv, cpsw_slave_stop, priv);
1356 pm_runtime_put_sync(&priv->pdev->dev);
1357 netif_carrier_off(priv->ndev);
1361 static int cpsw_ndo_stop(struct net_device *ndev)
1363 struct cpsw_priv *priv = netdev_priv(ndev);
1365 cpsw_info(priv, ifdown, "shutting down cpsw device\n");
1366 netif_stop_queue(priv->ndev);
1367 netif_carrier_off(priv->ndev);
1369 if (cpsw_common_res_usage_state(priv) <= 1) {
1370 struct cpsw_priv *priv_sl0 = cpsw_get_slave_priv(priv, 0);
1372 napi_disable(&priv_sl0->napi_rx);
1373 napi_disable(&priv_sl0->napi_tx);
1374 cpts_unregister(priv->cpts);
1375 cpsw_intr_disable(priv);
1376 cpdma_ctlr_stop(priv->dma);
1377 cpsw_ale_stop(priv->ale);
1379 for_each_slave(priv, cpsw_slave_stop, priv);
1380 pm_runtime_put_sync(&priv->pdev->dev);
1381 if (priv->data.dual_emac)
1382 priv->slaves[priv->emac_port].open_stat = false;
1386 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
1387 struct net_device *ndev)
1389 struct cpsw_priv *priv = netdev_priv(ndev);
1392 ndev->trans_start = jiffies;
1394 if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
1395 cpsw_err(priv, tx_err, "packet pad failed\n");
1396 ndev->stats.tx_dropped++;
1397 return NETDEV_TX_OK;
1400 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
1401 priv->cpts->tx_enable)
1402 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
1404 skb_tx_timestamp(skb);
1406 ret = cpsw_tx_packet_submit(ndev, priv, skb);
1407 if (unlikely(ret != 0)) {
1408 cpsw_err(priv, tx_err, "desc submit failed\n");
1412 /* If there is no more tx desc left free then we need to
1413 * tell the kernel to stop sending us tx frames.
1415 if (unlikely(!cpdma_check_free_tx_desc(priv->txch)))
1416 netif_stop_queue(ndev);
1418 return NETDEV_TX_OK;
1420 ndev->stats.tx_dropped++;
1421 netif_stop_queue(ndev);
1422 return NETDEV_TX_BUSY;
1425 #ifdef CONFIG_TI_CPTS
1427 static void cpsw_hwtstamp_v1(struct cpsw_priv *priv)
1429 struct cpsw_slave *slave = &priv->slaves[priv->data.active_slave];
1432 if (!priv->cpts->tx_enable && !priv->cpts->rx_enable) {
1433 slave_write(slave, 0, CPSW1_TS_CTL);
1437 seq_id = (30 << CPSW_V1_SEQ_ID_OFS_SHIFT) | ETH_P_1588;
1438 ts_en = EVENT_MSG_BITS << CPSW_V1_MSG_TYPE_OFS;
1440 if (priv->cpts->tx_enable)
1441 ts_en |= CPSW_V1_TS_TX_EN;
1443 if (priv->cpts->rx_enable)
1444 ts_en |= CPSW_V1_TS_RX_EN;
1446 slave_write(slave, ts_en, CPSW1_TS_CTL);
1447 slave_write(slave, seq_id, CPSW1_TS_SEQ_LTYPE);
1450 static void cpsw_hwtstamp_v2(struct cpsw_priv *priv)
1452 struct cpsw_slave *slave;
1455 if (priv->data.dual_emac)
1456 slave = &priv->slaves[priv->emac_port];
1458 slave = &priv->slaves[priv->data.active_slave];
1460 ctrl = slave_read(slave, CPSW2_CONTROL);
1461 switch (priv->version) {
1462 case CPSW_VERSION_2:
1463 ctrl &= ~CTRL_V2_ALL_TS_MASK;
1465 if (priv->cpts->tx_enable)
1466 ctrl |= CTRL_V2_TX_TS_BITS;
1468 if (priv->cpts->rx_enable)
1469 ctrl |= CTRL_V2_RX_TS_BITS;
1471 case CPSW_VERSION_3:
1473 ctrl &= ~CTRL_V3_ALL_TS_MASK;
1475 if (priv->cpts->tx_enable)
1476 ctrl |= CTRL_V3_TX_TS_BITS;
1478 if (priv->cpts->rx_enable)
1479 ctrl |= CTRL_V3_RX_TS_BITS;
1483 mtype = (30 << TS_SEQ_ID_OFFSET_SHIFT) | EVENT_MSG_BITS;
1485 slave_write(slave, mtype, CPSW2_TS_SEQ_MTYPE);
1486 slave_write(slave, ctrl, CPSW2_CONTROL);
1487 __raw_writel(ETH_P_1588, &priv->regs->ts_ltype);
1490 static int cpsw_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
1492 struct cpsw_priv *priv = netdev_priv(dev);
1493 struct cpts *cpts = priv->cpts;
1494 struct hwtstamp_config cfg;
1496 if (priv->version != CPSW_VERSION_1 &&
1497 priv->version != CPSW_VERSION_2 &&
1498 priv->version != CPSW_VERSION_3)
1501 if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
1504 /* reserved for future extensions */
1508 if (cfg.tx_type != HWTSTAMP_TX_OFF && cfg.tx_type != HWTSTAMP_TX_ON)
1511 switch (cfg.rx_filter) {
1512 case HWTSTAMP_FILTER_NONE:
1513 cpts->rx_enable = 0;
1515 case HWTSTAMP_FILTER_ALL:
1516 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
1517 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
1518 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
1520 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
1521 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
1522 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
1523 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
1524 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
1525 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
1526 case HWTSTAMP_FILTER_PTP_V2_EVENT:
1527 case HWTSTAMP_FILTER_PTP_V2_SYNC:
1528 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
1529 cpts->rx_enable = 1;
1530 cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
1536 cpts->tx_enable = cfg.tx_type == HWTSTAMP_TX_ON;
1538 switch (priv->version) {
1539 case CPSW_VERSION_1:
1540 cpsw_hwtstamp_v1(priv);
1542 case CPSW_VERSION_2:
1543 case CPSW_VERSION_3:
1544 cpsw_hwtstamp_v2(priv);
1550 return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1553 static int cpsw_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
1555 struct cpsw_priv *priv = netdev_priv(dev);
1556 struct cpts *cpts = priv->cpts;
1557 struct hwtstamp_config cfg;
1559 if (priv->version != CPSW_VERSION_1 &&
1560 priv->version != CPSW_VERSION_2 &&
1561 priv->version != CPSW_VERSION_3)
1565 cfg.tx_type = cpts->tx_enable ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF;
1566 cfg.rx_filter = (cpts->rx_enable ?
1567 HWTSTAMP_FILTER_PTP_V2_EVENT : HWTSTAMP_FILTER_NONE);
1569 return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1572 #endif /*CONFIG_TI_CPTS*/
1574 static int cpsw_ndo_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
1576 struct cpsw_priv *priv = netdev_priv(dev);
1577 int slave_no = cpsw_slave_index(priv);
1579 if (!netif_running(dev))
1583 #ifdef CONFIG_TI_CPTS
1585 return cpsw_hwtstamp_set(dev, req);
1587 return cpsw_hwtstamp_get(dev, req);
1591 if (!priv->slaves[slave_no].phy)
1593 return phy_mii_ioctl(priv->slaves[slave_no].phy, req, cmd);
1596 static void cpsw_ndo_tx_timeout(struct net_device *ndev)
1598 struct cpsw_priv *priv = netdev_priv(ndev);
1600 cpsw_err(priv, tx_err, "transmit timeout, restarting dma\n");
1601 ndev->stats.tx_errors++;
1602 cpsw_intr_disable(priv);
1603 cpdma_chan_stop(priv->txch);
1604 cpdma_chan_start(priv->txch);
1605 cpsw_intr_enable(priv);
1608 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
1610 struct cpsw_priv *priv = netdev_priv(ndev);
1611 struct sockaddr *addr = (struct sockaddr *)p;
1615 if (!is_valid_ether_addr(addr->sa_data))
1616 return -EADDRNOTAVAIL;
1618 if (priv->data.dual_emac) {
1619 vid = priv->slaves[priv->emac_port].port_vlan;
1623 cpsw_ale_del_ucast(priv->ale, priv->mac_addr, priv->host_port,
1625 cpsw_ale_add_ucast(priv->ale, addr->sa_data, priv->host_port,
1628 memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
1629 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
1630 for_each_slave(priv, cpsw_set_slave_mac, priv);
1635 #ifdef CONFIG_NET_POLL_CONTROLLER
1636 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1638 struct cpsw_priv *priv = netdev_priv(ndev);
1640 cpsw_intr_disable(priv);
1641 cpsw_rx_interrupt(priv->irqs_table[0], priv);
1642 cpsw_tx_interrupt(priv->irqs_table[1], priv);
1643 cpsw_intr_enable(priv);
1647 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
1651 int unreg_mcast_mask = 0;
1654 if (priv->data.dual_emac) {
1655 port_mask = (1 << (priv->emac_port + 1)) | ALE_PORT_HOST;
1657 if (priv->ndev->flags & IFF_ALLMULTI)
1658 unreg_mcast_mask = port_mask;
1660 port_mask = ALE_ALL_PORTS;
1662 if (priv->ndev->flags & IFF_ALLMULTI)
1663 unreg_mcast_mask = ALE_ALL_PORTS;
1665 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1668 ret = cpsw_ale_add_vlan(priv->ale, vid, port_mask, 0, port_mask,
1669 unreg_mcast_mask << priv->host_port);
1673 ret = cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1674 priv->host_port, ALE_VLAN, vid);
1678 ret = cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1679 port_mask, ALE_VLAN, vid, 0);
1681 goto clean_vlan_ucast;
1685 cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1686 priv->host_port, ALE_VLAN, vid);
1688 cpsw_ale_del_vlan(priv->ale, vid, 0);
1692 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1693 __be16 proto, u16 vid)
1695 struct cpsw_priv *priv = netdev_priv(ndev);
1697 if (vid == priv->data.default_vlan)
1700 if (priv->data.dual_emac) {
1701 /* In dual EMAC, reserved VLAN id should not be used for
1702 * creating VLAN interfaces as this can break the dual
1703 * EMAC port separation
1707 for (i = 0; i < priv->data.slaves; i++) {
1708 if (vid == priv->slaves[i].port_vlan)
1713 dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1714 return cpsw_add_vlan_ale_entry(priv, vid);
1717 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1718 __be16 proto, u16 vid)
1720 struct cpsw_priv *priv = netdev_priv(ndev);
1723 if (vid == priv->data.default_vlan)
1726 if (priv->data.dual_emac) {
1729 for (i = 0; i < priv->data.slaves; i++) {
1730 if (vid == priv->slaves[i].port_vlan)
1735 dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1736 ret = cpsw_ale_del_vlan(priv->ale, vid, 0);
1740 ret = cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1741 priv->host_port, ALE_VLAN, vid);
1745 return cpsw_ale_del_mcast(priv->ale, priv->ndev->broadcast,
1749 static const struct net_device_ops cpsw_netdev_ops = {
1750 .ndo_open = cpsw_ndo_open,
1751 .ndo_stop = cpsw_ndo_stop,
1752 .ndo_start_xmit = cpsw_ndo_start_xmit,
1753 .ndo_set_mac_address = cpsw_ndo_set_mac_address,
1754 .ndo_do_ioctl = cpsw_ndo_ioctl,
1755 .ndo_validate_addr = eth_validate_addr,
1756 .ndo_change_mtu = eth_change_mtu,
1757 .ndo_tx_timeout = cpsw_ndo_tx_timeout,
1758 .ndo_set_rx_mode = cpsw_ndo_set_rx_mode,
1759 #ifdef CONFIG_NET_POLL_CONTROLLER
1760 .ndo_poll_controller = cpsw_ndo_poll_controller,
1762 .ndo_vlan_rx_add_vid = cpsw_ndo_vlan_rx_add_vid,
1763 .ndo_vlan_rx_kill_vid = cpsw_ndo_vlan_rx_kill_vid,
1766 static int cpsw_get_regs_len(struct net_device *ndev)
1768 struct cpsw_priv *priv = netdev_priv(ndev);
1770 return priv->data.ale_entries * ALE_ENTRY_WORDS * sizeof(u32);
1773 static void cpsw_get_regs(struct net_device *ndev,
1774 struct ethtool_regs *regs, void *p)
1776 struct cpsw_priv *priv = netdev_priv(ndev);
1779 /* update CPSW IP version */
1780 regs->version = priv->version;
1782 cpsw_ale_dump(priv->ale, reg);
1785 static void cpsw_get_drvinfo(struct net_device *ndev,
1786 struct ethtool_drvinfo *info)
1788 struct cpsw_priv *priv = netdev_priv(ndev);
1790 strlcpy(info->driver, "cpsw", sizeof(info->driver));
1791 strlcpy(info->version, "1.0", sizeof(info->version));
1792 strlcpy(info->bus_info, priv->pdev->name, sizeof(info->bus_info));
1795 static u32 cpsw_get_msglevel(struct net_device *ndev)
1797 struct cpsw_priv *priv = netdev_priv(ndev);
1798 return priv->msg_enable;
1801 static void cpsw_set_msglevel(struct net_device *ndev, u32 value)
1803 struct cpsw_priv *priv = netdev_priv(ndev);
1804 priv->msg_enable = value;
1807 static int cpsw_get_ts_info(struct net_device *ndev,
1808 struct ethtool_ts_info *info)
1810 #ifdef CONFIG_TI_CPTS
1811 struct cpsw_priv *priv = netdev_priv(ndev);
1813 info->so_timestamping =
1814 SOF_TIMESTAMPING_TX_HARDWARE |
1815 SOF_TIMESTAMPING_TX_SOFTWARE |
1816 SOF_TIMESTAMPING_RX_HARDWARE |
1817 SOF_TIMESTAMPING_RX_SOFTWARE |
1818 SOF_TIMESTAMPING_SOFTWARE |
1819 SOF_TIMESTAMPING_RAW_HARDWARE;
1820 info->phc_index = priv->cpts->phc_index;
1822 (1 << HWTSTAMP_TX_OFF) |
1823 (1 << HWTSTAMP_TX_ON);
1825 (1 << HWTSTAMP_FILTER_NONE) |
1826 (1 << HWTSTAMP_FILTER_PTP_V2_EVENT);
1828 info->so_timestamping =
1829 SOF_TIMESTAMPING_TX_SOFTWARE |
1830 SOF_TIMESTAMPING_RX_SOFTWARE |
1831 SOF_TIMESTAMPING_SOFTWARE;
1832 info->phc_index = -1;
1834 info->rx_filters = 0;
1839 static int cpsw_get_settings(struct net_device *ndev,
1840 struct ethtool_cmd *ecmd)
1842 struct cpsw_priv *priv = netdev_priv(ndev);
1843 int slave_no = cpsw_slave_index(priv);
1845 if (priv->slaves[slave_no].phy)
1846 return phy_ethtool_gset(priv->slaves[slave_no].phy, ecmd);
1851 static int cpsw_set_settings(struct net_device *ndev, struct ethtool_cmd *ecmd)
1853 struct cpsw_priv *priv = netdev_priv(ndev);
1854 int slave_no = cpsw_slave_index(priv);
1856 if (priv->slaves[slave_no].phy)
1857 return phy_ethtool_sset(priv->slaves[slave_no].phy, ecmd);
1862 static void cpsw_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1864 struct cpsw_priv *priv = netdev_priv(ndev);
1865 int slave_no = cpsw_slave_index(priv);
1870 if (priv->slaves[slave_no].phy)
1871 phy_ethtool_get_wol(priv->slaves[slave_no].phy, wol);
1874 static int cpsw_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1876 struct cpsw_priv *priv = netdev_priv(ndev);
1877 int slave_no = cpsw_slave_index(priv);
1879 if (priv->slaves[slave_no].phy)
1880 return phy_ethtool_set_wol(priv->slaves[slave_no].phy, wol);
1885 static void cpsw_get_pauseparam(struct net_device *ndev,
1886 struct ethtool_pauseparam *pause)
1888 struct cpsw_priv *priv = netdev_priv(ndev);
1890 pause->autoneg = AUTONEG_DISABLE;
1891 pause->rx_pause = priv->rx_pause ? true : false;
1892 pause->tx_pause = priv->tx_pause ? true : false;
1895 static int cpsw_set_pauseparam(struct net_device *ndev,
1896 struct ethtool_pauseparam *pause)
1898 struct cpsw_priv *priv = netdev_priv(ndev);
1901 priv->rx_pause = pause->rx_pause ? true : false;
1902 priv->tx_pause = pause->tx_pause ? true : false;
1904 for_each_slave(priv, _cpsw_adjust_link, priv, &link);
1909 static const struct ethtool_ops cpsw_ethtool_ops = {
1910 .get_drvinfo = cpsw_get_drvinfo,
1911 .get_msglevel = cpsw_get_msglevel,
1912 .set_msglevel = cpsw_set_msglevel,
1913 .get_link = ethtool_op_get_link,
1914 .get_ts_info = cpsw_get_ts_info,
1915 .get_settings = cpsw_get_settings,
1916 .set_settings = cpsw_set_settings,
1917 .get_coalesce = cpsw_get_coalesce,
1918 .set_coalesce = cpsw_set_coalesce,
1919 .get_sset_count = cpsw_get_sset_count,
1920 .get_strings = cpsw_get_strings,
1921 .get_ethtool_stats = cpsw_get_ethtool_stats,
1922 .get_pauseparam = cpsw_get_pauseparam,
1923 .set_pauseparam = cpsw_set_pauseparam,
1924 .get_wol = cpsw_get_wol,
1925 .set_wol = cpsw_set_wol,
1926 .get_regs_len = cpsw_get_regs_len,
1927 .get_regs = cpsw_get_regs,
1930 static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv,
1931 u32 slave_reg_ofs, u32 sliver_reg_ofs)
1933 void __iomem *regs = priv->regs;
1934 int slave_num = slave->slave_num;
1935 struct cpsw_slave_data *data = priv->data.slave_data + slave_num;
1938 slave->regs = regs + slave_reg_ofs;
1939 slave->sliver = regs + sliver_reg_ofs;
1940 slave->port_vlan = data->dual_emac_res_vlan;
1943 static int cpsw_probe_dt(struct cpsw_priv *priv,
1944 struct platform_device *pdev)
1946 struct device_node *node = pdev->dev.of_node;
1947 struct device_node *slave_node;
1948 struct cpsw_platform_data *data = &priv->data;
1955 if (of_property_read_u32(node, "slaves", &prop)) {
1956 dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1959 data->slaves = prop;
1961 if (of_property_read_u32(node, "active_slave", &prop)) {
1962 dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1965 data->active_slave = prop;
1967 if (of_property_read_u32(node, "cpts_clock_mult", &prop)) {
1968 dev_err(&pdev->dev, "Missing cpts_clock_mult property in the DT.\n");
1971 data->cpts_clock_mult = prop;
1973 if (of_property_read_u32(node, "cpts_clock_shift", &prop)) {
1974 dev_err(&pdev->dev, "Missing cpts_clock_shift property in the DT.\n");
1977 data->cpts_clock_shift = prop;
1979 data->slave_data = devm_kzalloc(&pdev->dev, data->slaves
1980 * sizeof(struct cpsw_slave_data),
1982 if (!data->slave_data)
1985 if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1986 dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1989 data->channels = prop;
1991 if (of_property_read_u32(node, "ale_entries", &prop)) {
1992 dev_err(&pdev->dev, "Missing ale_entries property in the DT.\n");
1995 data->ale_entries = prop;
1997 if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1998 dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");
2001 data->bd_ram_size = prop;
2003 if (of_property_read_u32(node, "rx_descs", &prop)) {
2004 dev_err(&pdev->dev, "Missing rx_descs property in the DT.\n");
2007 data->rx_descs = prop;
2009 if (of_property_read_u32(node, "mac_control", &prop)) {
2010 dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
2013 data->mac_control = prop;
2015 if (of_property_read_bool(node, "dual_emac"))
2016 data->dual_emac = 1;
2019 * Populate all the child nodes here...
2021 ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
2022 /* We do not want to force this, as in some cases may not have child */
2024 dev_warn(&pdev->dev, "Doesn't have any child node\n");
2026 for_each_child_of_node(node, slave_node) {
2027 struct cpsw_slave_data *slave_data = data->slave_data + i;
2028 const void *mac_addr = NULL;
2032 /* This is no slave child node, continue */
2033 if (strcmp(slave_node->name, "slave"))
2036 priv->slaves[i].phy_node =
2037 of_parse_phandle(slave_node, "phy-handle", 0);
2038 parp = of_get_property(slave_node, "phy_id", &lenp);
2039 if (of_phy_is_fixed_link(slave_node)) {
2040 struct device_node *phy_node;
2041 struct phy_device *phy_dev;
2043 /* In the case of a fixed PHY, the DT node associated
2044 * to the PHY is the Ethernet MAC DT node.
2046 ret = of_phy_register_fixed_link(slave_node);
2049 phy_node = of_node_get(slave_node);
2050 phy_dev = of_phy_find_device(phy_node);
2053 snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
2054 PHY_ID_FMT, phy_dev->mdio.bus->id,
2055 phy_dev->mdio.addr);
2058 struct device_node *mdio_node;
2059 struct platform_device *mdio;
2061 if (lenp != (sizeof(__be32) * 2)) {
2062 dev_err(&pdev->dev, "Invalid slave[%d] phy_id property\n", i);
2065 mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
2066 phyid = be32_to_cpup(parp+1);
2067 mdio = of_find_device_by_node(mdio_node);
2068 of_node_put(mdio_node);
2070 dev_err(&pdev->dev, "Missing mdio platform device\n");
2073 snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
2074 PHY_ID_FMT, mdio->name, phyid);
2076 dev_err(&pdev->dev, "No slave[%d] phy_id or fixed-link property\n", i);
2079 slave_data->phy_if = of_get_phy_mode(slave_node);
2080 if (slave_data->phy_if < 0) {
2081 dev_err(&pdev->dev, "Missing or malformed slave[%d] phy-mode property\n",
2083 return slave_data->phy_if;
2087 mac_addr = of_get_mac_address(slave_node);
2089 memcpy(slave_data->mac_addr, mac_addr, ETH_ALEN);
2091 ret = ti_cm_get_macid(&pdev->dev, i,
2092 slave_data->mac_addr);
2096 if (data->dual_emac) {
2097 if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
2099 dev_err(&pdev->dev, "Missing dual_emac_res_vlan in DT.\n");
2100 slave_data->dual_emac_res_vlan = i+1;
2101 dev_err(&pdev->dev, "Using %d as Reserved VLAN for %d slave\n",
2102 slave_data->dual_emac_res_vlan, i);
2104 slave_data->dual_emac_res_vlan = prop;
2109 if (i == data->slaves)
2116 static int cpsw_probe_dual_emac(struct platform_device *pdev,
2117 struct cpsw_priv *priv)
2119 struct cpsw_platform_data *data = &priv->data;
2120 struct net_device *ndev;
2121 struct cpsw_priv *priv_sl2;
2124 ndev = alloc_etherdev(sizeof(struct cpsw_priv));
2126 dev_err(&pdev->dev, "cpsw: error allocating net_device\n");
2130 priv_sl2 = netdev_priv(ndev);
2131 spin_lock_init(&priv_sl2->lock);
2132 priv_sl2->data = *data;
2133 priv_sl2->pdev = pdev;
2134 priv_sl2->ndev = ndev;
2135 priv_sl2->dev = &ndev->dev;
2136 priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
2137 priv_sl2->rx_packet_max = max(rx_packet_max, 128);
2139 if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
2140 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
2142 dev_info(&pdev->dev, "cpsw: Detected MACID = %pM\n", priv_sl2->mac_addr);
2144 random_ether_addr(priv_sl2->mac_addr);
2145 dev_info(&pdev->dev, "cpsw: Random MACID = %pM\n", priv_sl2->mac_addr);
2147 memcpy(ndev->dev_addr, priv_sl2->mac_addr, ETH_ALEN);
2149 priv_sl2->slaves = priv->slaves;
2150 priv_sl2->clk = priv->clk;
2152 priv_sl2->coal_intvl = 0;
2153 priv_sl2->bus_freq_mhz = priv->bus_freq_mhz;
2155 priv_sl2->regs = priv->regs;
2156 priv_sl2->host_port = priv->host_port;
2157 priv_sl2->host_port_regs = priv->host_port_regs;
2158 priv_sl2->wr_regs = priv->wr_regs;
2159 priv_sl2->hw_stats = priv->hw_stats;
2160 priv_sl2->dma = priv->dma;
2161 priv_sl2->txch = priv->txch;
2162 priv_sl2->rxch = priv->rxch;
2163 priv_sl2->ale = priv->ale;
2164 priv_sl2->emac_port = 1;
2165 priv->slaves[1].ndev = ndev;
2166 priv_sl2->cpts = priv->cpts;
2167 priv_sl2->version = priv->version;
2169 for (i = 0; i < priv->num_irqs; i++) {
2170 priv_sl2->irqs_table[i] = priv->irqs_table[i];
2171 priv_sl2->num_irqs = priv->num_irqs;
2173 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2175 ndev->netdev_ops = &cpsw_netdev_ops;
2176 ndev->ethtool_ops = &cpsw_ethtool_ops;
2178 /* register the network device */
2179 SET_NETDEV_DEV(ndev, &pdev->dev);
2180 ret = register_netdev(ndev);
2182 dev_err(&pdev->dev, "cpsw: error registering net device\n");
2190 #define CPSW_QUIRK_IRQ BIT(0)
2192 static struct platform_device_id cpsw_devtype[] = {
2194 /* keep it for existing comaptibles */
2196 .driver_data = CPSW_QUIRK_IRQ,
2198 .name = "am335x-cpsw",
2199 .driver_data = CPSW_QUIRK_IRQ,
2201 .name = "am4372-cpsw",
2204 .name = "dra7-cpsw",
2210 MODULE_DEVICE_TABLE(platform, cpsw_devtype);
2219 static const struct of_device_id cpsw_of_mtable[] = {
2220 { .compatible = "ti,cpsw", .data = &cpsw_devtype[CPSW], },
2221 { .compatible = "ti,am335x-cpsw", .data = &cpsw_devtype[AM335X_CPSW], },
2222 { .compatible = "ti,am4372-cpsw", .data = &cpsw_devtype[AM4372_CPSW], },
2223 { .compatible = "ti,dra7-cpsw", .data = &cpsw_devtype[DRA7_CPSW], },
2226 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
2228 static int cpsw_probe(struct platform_device *pdev)
2230 struct cpsw_platform_data *data;
2231 struct net_device *ndev;
2232 struct cpsw_priv *priv;
2233 struct cpdma_params dma_params;
2234 struct cpsw_ale_params ale_params;
2235 void __iomem *ss_regs;
2236 struct resource *res, *ss_res;
2237 const struct of_device_id *of_id;
2238 struct gpio_descs *mode;
2239 u32 slave_offset, sliver_offset, slave_size;
2243 ndev = alloc_etherdev(sizeof(struct cpsw_priv));
2245 dev_err(&pdev->dev, "error allocating net_device\n");
2249 platform_set_drvdata(pdev, ndev);
2250 priv = netdev_priv(ndev);
2251 spin_lock_init(&priv->lock);
2254 priv->dev = &ndev->dev;
2255 priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
2256 priv->rx_packet_max = max(rx_packet_max, 128);
2257 priv->cpts = devm_kzalloc(&pdev->dev, sizeof(struct cpts), GFP_KERNEL);
2259 dev_err(&pdev->dev, "error allocating cpts\n");
2261 goto clean_ndev_ret;
2264 mode = devm_gpiod_get_array_optional(&pdev->dev, "mode", GPIOD_OUT_LOW);
2266 ret = PTR_ERR(mode);
2267 dev_err(&pdev->dev, "gpio request failed, ret %d\n", ret);
2268 goto clean_ndev_ret;
2272 * This may be required here for child devices.
2274 pm_runtime_enable(&pdev->dev);
2276 /* Select default pin state */
2277 pinctrl_pm_select_default_state(&pdev->dev);
2280 priv->slaves = devm_kzalloc(&pdev->dev,
2281 sizeof(struct cpsw_slave) * data->slaves,
2283 if (!priv->slaves) {
2285 goto clean_runtime_disable_ret;
2287 for (i = 0; i < data->slaves; i++)
2288 priv->slaves[i].slave_num = i;
2290 if (cpsw_probe_dt(priv, pdev)) {
2291 dev_err(&pdev->dev, "cpsw: platform data missing\n");
2293 goto clean_runtime_disable_ret;
2296 if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
2297 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
2298 dev_info(&pdev->dev, "Detected MACID = %pM\n", priv->mac_addr);
2300 eth_random_addr(priv->mac_addr);
2301 dev_info(&pdev->dev, "Random MACID = %pM\n", priv->mac_addr);
2304 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
2306 priv->slaves[0].ndev = ndev;
2307 priv->emac_port = 0;
2309 priv->clk = devm_clk_get(&pdev->dev, "fck");
2310 if (IS_ERR(priv->clk)) {
2311 dev_err(priv->dev, "fck is not found\n");
2313 goto clean_runtime_disable_ret;
2315 priv->coal_intvl = 0;
2316 priv->bus_freq_mhz = clk_get_rate(priv->clk) / 1000000;
2318 ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2319 ss_regs = devm_ioremap_resource(&pdev->dev, ss_res);
2320 if (IS_ERR(ss_regs)) {
2321 ret = PTR_ERR(ss_regs);
2322 goto clean_runtime_disable_ret;
2324 priv->regs = ss_regs;
2325 priv->host_port = HOST_PORT_NUM;
2327 /* Need to enable clocks with runtime PM api to access module
2330 pm_runtime_get_sync(&pdev->dev);
2331 priv->version = readl(&priv->regs->id_ver);
2332 pm_runtime_put_sync(&pdev->dev);
2334 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2335 priv->wr_regs = devm_ioremap_resource(&pdev->dev, res);
2336 if (IS_ERR(priv->wr_regs)) {
2337 ret = PTR_ERR(priv->wr_regs);
2338 goto clean_runtime_disable_ret;
2341 memset(&dma_params, 0, sizeof(dma_params));
2342 memset(&ale_params, 0, sizeof(ale_params));
2344 switch (priv->version) {
2345 case CPSW_VERSION_1:
2346 priv->host_port_regs = ss_regs + CPSW1_HOST_PORT_OFFSET;
2347 priv->cpts->reg = ss_regs + CPSW1_CPTS_OFFSET;
2348 priv->hw_stats = ss_regs + CPSW1_HW_STATS;
2349 dma_params.dmaregs = ss_regs + CPSW1_CPDMA_OFFSET;
2350 dma_params.txhdp = ss_regs + CPSW1_STATERAM_OFFSET;
2351 ale_params.ale_regs = ss_regs + CPSW1_ALE_OFFSET;
2352 slave_offset = CPSW1_SLAVE_OFFSET;
2353 slave_size = CPSW1_SLAVE_SIZE;
2354 sliver_offset = CPSW1_SLIVER_OFFSET;
2355 dma_params.desc_mem_phys = 0;
2357 case CPSW_VERSION_2:
2358 case CPSW_VERSION_3:
2359 case CPSW_VERSION_4:
2360 priv->host_port_regs = ss_regs + CPSW2_HOST_PORT_OFFSET;
2361 priv->cpts->reg = ss_regs + CPSW2_CPTS_OFFSET;
2362 priv->hw_stats = ss_regs + CPSW2_HW_STATS;
2363 dma_params.dmaregs = ss_regs + CPSW2_CPDMA_OFFSET;
2364 dma_params.txhdp = ss_regs + CPSW2_STATERAM_OFFSET;
2365 ale_params.ale_regs = ss_regs + CPSW2_ALE_OFFSET;
2366 slave_offset = CPSW2_SLAVE_OFFSET;
2367 slave_size = CPSW2_SLAVE_SIZE;
2368 sliver_offset = CPSW2_SLIVER_OFFSET;
2369 dma_params.desc_mem_phys =
2370 (u32 __force) ss_res->start + CPSW2_BD_OFFSET;
2373 dev_err(priv->dev, "unknown version 0x%08x\n", priv->version);
2375 goto clean_runtime_disable_ret;
2377 for (i = 0; i < priv->data.slaves; i++) {
2378 struct cpsw_slave *slave = &priv->slaves[i];
2379 cpsw_slave_init(slave, priv, slave_offset, sliver_offset);
2380 slave_offset += slave_size;
2381 sliver_offset += SLIVER_SIZE;
2384 dma_params.dev = &pdev->dev;
2385 dma_params.rxthresh = dma_params.dmaregs + CPDMA_RXTHRESH;
2386 dma_params.rxfree = dma_params.dmaregs + CPDMA_RXFREE;
2387 dma_params.rxhdp = dma_params.txhdp + CPDMA_RXHDP;
2388 dma_params.txcp = dma_params.txhdp + CPDMA_TXCP;
2389 dma_params.rxcp = dma_params.txhdp + CPDMA_RXCP;
2391 dma_params.num_chan = data->channels;
2392 dma_params.has_soft_reset = true;
2393 dma_params.min_packet_size = CPSW_MIN_PACKET_SIZE;
2394 dma_params.desc_mem_size = data->bd_ram_size;
2395 dma_params.desc_align = 16;
2396 dma_params.has_ext_regs = true;
2397 dma_params.desc_hw_addr = dma_params.desc_mem_phys;
2399 priv->dma = cpdma_ctlr_create(&dma_params);
2401 dev_err(priv->dev, "error initializing dma\n");
2403 goto clean_runtime_disable_ret;
2406 priv->txch = cpdma_chan_create(priv->dma, tx_chan_num(0),
2408 priv->rxch = cpdma_chan_create(priv->dma, rx_chan_num(0),
2411 if (WARN_ON(!priv->txch || !priv->rxch)) {
2412 dev_err(priv->dev, "error initializing dma channels\n");
2417 ale_params.dev = &ndev->dev;
2418 ale_params.ale_ageout = ale_ageout;
2419 ale_params.ale_entries = data->ale_entries;
2420 ale_params.ale_ports = data->slaves;
2422 priv->ale = cpsw_ale_create(&ale_params);
2424 dev_err(priv->dev, "error initializing ale engine\n");
2429 ndev->irq = platform_get_irq(pdev, 1);
2430 if (ndev->irq < 0) {
2431 dev_err(priv->dev, "error getting irq resource\n");
2436 of_id = of_match_device(cpsw_of_mtable, &pdev->dev);
2438 pdev->id_entry = of_id->data;
2439 if (pdev->id_entry->driver_data)
2440 priv->quirk_irq = true;
2443 /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
2444 * MISC IRQs which are always kept disabled with this driver so
2445 * we will not request them.
2447 * If anyone wants to implement support for those, make sure to
2448 * first request and append them to irqs_table array.
2452 irq = platform_get_irq(pdev, 1);
2458 priv->irqs_table[0] = irq;
2459 ret = devm_request_irq(&pdev->dev, irq, cpsw_rx_interrupt,
2460 0, dev_name(&pdev->dev), priv);
2462 dev_err(priv->dev, "error attaching irq (%d)\n", ret);
2467 irq = platform_get_irq(pdev, 2);
2473 priv->irqs_table[1] = irq;
2474 ret = devm_request_irq(&pdev->dev, irq, cpsw_tx_interrupt,
2475 0, dev_name(&pdev->dev), priv);
2477 dev_err(priv->dev, "error attaching irq (%d)\n", ret);
2482 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2484 ndev->netdev_ops = &cpsw_netdev_ops;
2485 ndev->ethtool_ops = &cpsw_ethtool_ops;
2486 netif_napi_add(ndev, &priv->napi_rx, cpsw_rx_poll, CPSW_POLL_WEIGHT);
2487 netif_tx_napi_add(ndev, &priv->napi_tx, cpsw_tx_poll, CPSW_POLL_WEIGHT);
2489 /* register the network device */
2490 SET_NETDEV_DEV(ndev, &pdev->dev);
2491 ret = register_netdev(ndev);
2493 dev_err(priv->dev, "error registering net device\n");
2498 cpsw_notice(priv, probe, "initialized device (regs %pa, irq %d)\n",
2499 &ss_res->start, ndev->irq);
2501 if (priv->data.dual_emac) {
2502 ret = cpsw_probe_dual_emac(pdev, priv);
2504 cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
2512 cpsw_ale_destroy(priv->ale);
2514 cpdma_chan_destroy(priv->txch);
2515 cpdma_chan_destroy(priv->rxch);
2516 cpdma_ctlr_destroy(priv->dma);
2517 clean_runtime_disable_ret:
2518 pm_runtime_disable(&pdev->dev);
2520 free_netdev(priv->ndev);
2524 static int cpsw_remove_child_device(struct device *dev, void *c)
2526 struct platform_device *pdev = to_platform_device(dev);
2528 of_device_unregister(pdev);
2533 static int cpsw_remove(struct platform_device *pdev)
2535 struct net_device *ndev = platform_get_drvdata(pdev);
2536 struct cpsw_priv *priv = netdev_priv(ndev);
2538 if (priv->data.dual_emac)
2539 unregister_netdev(cpsw_get_slave_ndev(priv, 1));
2540 unregister_netdev(ndev);
2542 cpsw_ale_destroy(priv->ale);
2543 cpdma_chan_destroy(priv->txch);
2544 cpdma_chan_destroy(priv->rxch);
2545 cpdma_ctlr_destroy(priv->dma);
2546 pm_runtime_disable(&pdev->dev);
2547 device_for_each_child(&pdev->dev, NULL, cpsw_remove_child_device);
2548 if (priv->data.dual_emac)
2549 free_netdev(cpsw_get_slave_ndev(priv, 1));
2554 #ifdef CONFIG_PM_SLEEP
2555 static int cpsw_suspend(struct device *dev)
2557 struct platform_device *pdev = to_platform_device(dev);
2558 struct net_device *ndev = platform_get_drvdata(pdev);
2559 struct cpsw_priv *priv = netdev_priv(ndev);
2561 if (priv->data.dual_emac) {
2564 for (i = 0; i < priv->data.slaves; i++) {
2565 if (netif_running(priv->slaves[i].ndev))
2566 cpsw_ndo_stop(priv->slaves[i].ndev);
2567 soft_reset_slave(priv->slaves + i);
2570 if (netif_running(ndev))
2571 cpsw_ndo_stop(ndev);
2572 for_each_slave(priv, soft_reset_slave);
2575 pm_runtime_put_sync(&pdev->dev);
2577 /* Select sleep pin state */
2578 pinctrl_pm_select_sleep_state(&pdev->dev);
2583 static int cpsw_resume(struct device *dev)
2585 struct platform_device *pdev = to_platform_device(dev);
2586 struct net_device *ndev = platform_get_drvdata(pdev);
2587 struct cpsw_priv *priv = netdev_priv(ndev);
2589 pm_runtime_get_sync(&pdev->dev);
2591 /* Select default pin state */
2592 pinctrl_pm_select_default_state(&pdev->dev);
2594 if (priv->data.dual_emac) {
2597 for (i = 0; i < priv->data.slaves; i++) {
2598 if (netif_running(priv->slaves[i].ndev))
2599 cpsw_ndo_open(priv->slaves[i].ndev);
2602 if (netif_running(ndev))
2603 cpsw_ndo_open(ndev);
2609 static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
2611 static struct platform_driver cpsw_driver = {
2615 .of_match_table = cpsw_of_mtable,
2617 .probe = cpsw_probe,
2618 .remove = cpsw_remove,
2621 module_platform_driver(cpsw_driver);
2623 MODULE_LICENSE("GPL");
2624 MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
2625 MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
2626 MODULE_DESCRIPTION("TI CPSW Ethernet driver");