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_net.h>
35 #include <linux/of_device.h>
36 #include <linux/if_vlan.h>
38 #include <linux/pinctrl/consumer.h>
43 #include "davinci_cpdma.h"
45 #define CPSW_DEBUG (NETIF_MSG_HW | NETIF_MSG_WOL | \
46 NETIF_MSG_DRV | NETIF_MSG_LINK | \
47 NETIF_MSG_IFUP | NETIF_MSG_INTR | \
48 NETIF_MSG_PROBE | NETIF_MSG_TIMER | \
49 NETIF_MSG_IFDOWN | NETIF_MSG_RX_ERR | \
50 NETIF_MSG_TX_ERR | NETIF_MSG_TX_DONE | \
51 NETIF_MSG_PKTDATA | NETIF_MSG_TX_QUEUED | \
54 #define cpsw_info(priv, type, format, ...) \
56 if (netif_msg_##type(priv) && net_ratelimit()) \
57 dev_info(priv->dev, format, ## __VA_ARGS__); \
60 #define cpsw_err(priv, type, format, ...) \
62 if (netif_msg_##type(priv) && net_ratelimit()) \
63 dev_err(priv->dev, format, ## __VA_ARGS__); \
66 #define cpsw_dbg(priv, type, format, ...) \
68 if (netif_msg_##type(priv) && net_ratelimit()) \
69 dev_dbg(priv->dev, format, ## __VA_ARGS__); \
72 #define cpsw_notice(priv, type, format, ...) \
74 if (netif_msg_##type(priv) && net_ratelimit()) \
75 dev_notice(priv->dev, format, ## __VA_ARGS__); \
78 #define ALE_ALL_PORTS 0x7
80 #define CPSW_MAJOR_VERSION(reg) (reg >> 8 & 0x7)
81 #define CPSW_MINOR_VERSION(reg) (reg & 0xff)
82 #define CPSW_RTL_VERSION(reg) ((reg >> 11) & 0x1f)
84 #define CPSW_VERSION_1 0x19010a
85 #define CPSW_VERSION_2 0x19010c
86 #define CPSW_VERSION_3 0x19010f
87 #define CPSW_VERSION_4 0x190112
89 #define HOST_PORT_NUM 0
90 #define SLIVER_SIZE 0x40
92 #define CPSW1_HOST_PORT_OFFSET 0x028
93 #define CPSW1_SLAVE_OFFSET 0x050
94 #define CPSW1_SLAVE_SIZE 0x040
95 #define CPSW1_CPDMA_OFFSET 0x100
96 #define CPSW1_STATERAM_OFFSET 0x200
97 #define CPSW1_HW_STATS 0x400
98 #define CPSW1_CPTS_OFFSET 0x500
99 #define CPSW1_ALE_OFFSET 0x600
100 #define CPSW1_SLIVER_OFFSET 0x700
102 #define CPSW2_HOST_PORT_OFFSET 0x108
103 #define CPSW2_SLAVE_OFFSET 0x200
104 #define CPSW2_SLAVE_SIZE 0x100
105 #define CPSW2_CPDMA_OFFSET 0x800
106 #define CPSW2_HW_STATS 0x900
107 #define CPSW2_STATERAM_OFFSET 0xa00
108 #define CPSW2_CPTS_OFFSET 0xc00
109 #define CPSW2_ALE_OFFSET 0xd00
110 #define CPSW2_SLIVER_OFFSET 0xd80
111 #define CPSW2_BD_OFFSET 0x2000
113 #define CPDMA_RXTHRESH 0x0c0
114 #define CPDMA_RXFREE 0x0e0
115 #define CPDMA_TXHDP 0x00
116 #define CPDMA_RXHDP 0x20
117 #define CPDMA_TXCP 0x40
118 #define CPDMA_RXCP 0x60
120 #define CPSW_POLL_WEIGHT 64
121 #define CPSW_MIN_PACKET_SIZE 60
122 #define CPSW_MAX_PACKET_SIZE (1500 + 14 + 4 + 4)
124 #define RX_PRIORITY_MAPPING 0x76543210
125 #define TX_PRIORITY_MAPPING 0x33221100
126 #define CPDMA_TX_PRIORITY_MAP 0x76543210
128 #define CPSW_VLAN_AWARE BIT(1)
129 #define CPSW_ALE_VLAN_AWARE 1
131 #define CPSW_FIFO_NORMAL_MODE (0 << 16)
132 #define CPSW_FIFO_DUAL_MAC_MODE (1 << 16)
133 #define CPSW_FIFO_RATE_LIMIT_MODE (2 << 16)
135 #define CPSW_INTPACEEN (0x3f << 16)
136 #define CPSW_INTPRESCALE_MASK (0x7FF << 0)
137 #define CPSW_CMINTMAX_CNT 63
138 #define CPSW_CMINTMIN_CNT 2
139 #define CPSW_CMINTMAX_INTVL (1000 / CPSW_CMINTMIN_CNT)
140 #define CPSW_CMINTMIN_INTVL ((1000 / CPSW_CMINTMAX_CNT) + 1)
142 #define cpsw_slave_index(priv) \
143 ((priv->data.dual_emac) ? priv->emac_port : \
144 priv->data.active_slave)
146 static int debug_level;
147 module_param(debug_level, int, 0);
148 MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)");
150 static int ale_ageout = 10;
151 module_param(ale_ageout, int, 0);
152 MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)");
154 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
155 module_param(rx_packet_max, int, 0);
156 MODULE_PARM_DESC(rx_packet_max, "maximum receive packet size (bytes)");
158 struct cpsw_wr_regs {
178 struct cpsw_ss_regs {
195 #define CPSW1_MAX_BLKS 0x00 /* Maximum FIFO Blocks */
196 #define CPSW1_BLK_CNT 0x04 /* FIFO Block Usage Count (Read Only) */
197 #define CPSW1_TX_IN_CTL 0x08 /* Transmit FIFO Control */
198 #define CPSW1_PORT_VLAN 0x0c /* VLAN Register */
199 #define CPSW1_TX_PRI_MAP 0x10 /* Tx Header Priority to Switch Pri Mapping */
200 #define CPSW1_TS_CTL 0x14 /* Time Sync Control */
201 #define CPSW1_TS_SEQ_LTYPE 0x18 /* Time Sync Sequence ID Offset and Msg Type */
202 #define CPSW1_TS_VLAN 0x1c /* Time Sync VLAN1 and VLAN2 */
205 #define CPSW2_CONTROL 0x00 /* Control Register */
206 #define CPSW2_MAX_BLKS 0x08 /* Maximum FIFO Blocks */
207 #define CPSW2_BLK_CNT 0x0c /* FIFO Block Usage Count (Read Only) */
208 #define CPSW2_TX_IN_CTL 0x10 /* Transmit FIFO Control */
209 #define CPSW2_PORT_VLAN 0x14 /* VLAN Register */
210 #define CPSW2_TX_PRI_MAP 0x18 /* Tx Header Priority to Switch Pri Mapping */
211 #define CPSW2_TS_SEQ_MTYPE 0x1c /* Time Sync Sequence ID Offset and Msg Type */
213 /* CPSW_PORT_V1 and V2 */
214 #define SA_LO 0x20 /* CPGMAC_SL Source Address Low */
215 #define SA_HI 0x24 /* CPGMAC_SL Source Address High */
216 #define SEND_PERCENT 0x28 /* Transmit Queue Send Percentages */
218 /* CPSW_PORT_V2 only */
219 #define RX_DSCP_PRI_MAP0 0x30 /* Rx DSCP Priority to Rx Packet Mapping */
220 #define RX_DSCP_PRI_MAP1 0x34 /* Rx DSCP Priority to Rx Packet Mapping */
221 #define RX_DSCP_PRI_MAP2 0x38 /* Rx DSCP Priority to Rx Packet Mapping */
222 #define RX_DSCP_PRI_MAP3 0x3c /* Rx DSCP Priority to Rx Packet Mapping */
223 #define RX_DSCP_PRI_MAP4 0x40 /* Rx DSCP Priority to Rx Packet Mapping */
224 #define RX_DSCP_PRI_MAP5 0x44 /* Rx DSCP Priority to Rx Packet Mapping */
225 #define RX_DSCP_PRI_MAP6 0x48 /* Rx DSCP Priority to Rx Packet Mapping */
226 #define RX_DSCP_PRI_MAP7 0x4c /* Rx DSCP Priority to Rx Packet Mapping */
228 /* Bit definitions for the CPSW2_CONTROL register */
229 #define PASS_PRI_TAGGED (1<<24) /* Pass Priority Tagged */
230 #define VLAN_LTYPE2_EN (1<<21) /* VLAN LTYPE 2 enable */
231 #define VLAN_LTYPE1_EN (1<<20) /* VLAN LTYPE 1 enable */
232 #define DSCP_PRI_EN (1<<16) /* DSCP Priority Enable */
233 #define TS_320 (1<<14) /* Time Sync Dest Port 320 enable */
234 #define TS_319 (1<<13) /* Time Sync Dest Port 319 enable */
235 #define TS_132 (1<<12) /* Time Sync Dest IP Addr 132 enable */
236 #define TS_131 (1<<11) /* Time Sync Dest IP Addr 131 enable */
237 #define TS_130 (1<<10) /* Time Sync Dest IP Addr 130 enable */
238 #define TS_129 (1<<9) /* Time Sync Dest IP Addr 129 enable */
239 #define TS_TTL_NONZERO (1<<8) /* Time Sync Time To Live Non-zero enable */
240 #define TS_ANNEX_F_EN (1<<6) /* Time Sync Annex F enable */
241 #define TS_ANNEX_D_EN (1<<4) /* Time Sync Annex D enable */
242 #define TS_LTYPE2_EN (1<<3) /* Time Sync LTYPE 2 enable */
243 #define TS_LTYPE1_EN (1<<2) /* Time Sync LTYPE 1 enable */
244 #define TS_TX_EN (1<<1) /* Time Sync Transmit Enable */
245 #define TS_RX_EN (1<<0) /* Time Sync Receive Enable */
247 #define CTRL_V2_TS_BITS \
248 (TS_320 | TS_319 | TS_132 | TS_131 | TS_130 | TS_129 |\
249 TS_TTL_NONZERO | TS_ANNEX_D_EN | TS_LTYPE1_EN)
251 #define CTRL_V2_ALL_TS_MASK (CTRL_V2_TS_BITS | TS_TX_EN | TS_RX_EN)
252 #define CTRL_V2_TX_TS_BITS (CTRL_V2_TS_BITS | TS_TX_EN)
253 #define CTRL_V2_RX_TS_BITS (CTRL_V2_TS_BITS | TS_RX_EN)
256 #define CTRL_V3_TS_BITS \
257 (TS_320 | TS_319 | TS_132 | TS_131 | TS_130 | TS_129 |\
258 TS_TTL_NONZERO | TS_ANNEX_F_EN | TS_ANNEX_D_EN |\
261 #define CTRL_V3_ALL_TS_MASK (CTRL_V3_TS_BITS | TS_TX_EN | TS_RX_EN)
262 #define CTRL_V3_TX_TS_BITS (CTRL_V3_TS_BITS | TS_TX_EN)
263 #define CTRL_V3_RX_TS_BITS (CTRL_V3_TS_BITS | TS_RX_EN)
265 /* Bit definitions for the CPSW2_TS_SEQ_MTYPE register */
266 #define TS_SEQ_ID_OFFSET_SHIFT (16) /* Time Sync Sequence ID Offset */
267 #define TS_SEQ_ID_OFFSET_MASK (0x3f)
268 #define TS_MSG_TYPE_EN_SHIFT (0) /* Time Sync Message Type Enable */
269 #define TS_MSG_TYPE_EN_MASK (0xffff)
271 /* The PTP event messages - Sync, Delay_Req, Pdelay_Req, and Pdelay_Resp. */
272 #define EVENT_MSG_BITS ((1<<0) | (1<<1) | (1<<2) | (1<<3))
274 /* Bit definitions for the CPSW1_TS_CTL register */
275 #define CPSW_V1_TS_RX_EN BIT(0)
276 #define CPSW_V1_TS_TX_EN BIT(4)
277 #define CPSW_V1_MSG_TYPE_OFS 16
279 /* Bit definitions for the CPSW1_TS_SEQ_LTYPE register */
280 #define CPSW_V1_SEQ_ID_OFS_SHIFT 16
282 struct cpsw_host_regs {
288 u32 cpdma_tx_pri_map;
289 u32 cpdma_rx_chan_map;
292 struct cpsw_sliver_regs {
305 struct cpsw_hw_stats {
307 u32 rxbroadcastframes;
308 u32 rxmulticastframes;
311 u32 rxaligncodeerrors;
312 u32 rxoversizedframes;
314 u32 rxundersizedframes;
319 u32 txbroadcastframes;
320 u32 txmulticastframes;
322 u32 txdeferredframes;
323 u32 txcollisionframes;
324 u32 txsinglecollframes;
325 u32 txmultcollframes;
326 u32 txexcessivecollisions;
327 u32 txlatecollisions;
329 u32 txcarriersenseerrors;
332 u32 octetframes65t127;
333 u32 octetframes128t255;
334 u32 octetframes256t511;
335 u32 octetframes512t1023;
336 u32 octetframes1024tup;
345 struct cpsw_sliver_regs __iomem *sliver;
348 struct cpsw_slave_data *data;
349 struct phy_device *phy;
350 struct net_device *ndev;
355 static inline u32 slave_read(struct cpsw_slave *slave, u32 offset)
357 return __raw_readl(slave->regs + offset);
360 static inline void slave_write(struct cpsw_slave *slave, u32 val, u32 offset)
362 __raw_writel(val, slave->regs + offset);
367 struct platform_device *pdev;
368 struct net_device *ndev;
369 struct napi_struct napi_rx;
370 struct napi_struct napi_tx;
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;
384 u8 mac_addr[ETH_ALEN];
385 struct cpsw_slave *slaves;
386 struct cpdma_ctlr *dma;
387 struct cpdma_chan *txch, *rxch;
388 struct cpsw_ale *ale;
392 bool rx_irq_disabled;
393 bool tx_irq_disabled;
394 /* snapshot of IRQ numbers */
402 char stat_string[ETH_GSTRING_LEN];
414 #define CPSW_STAT(m) CPSW_STATS, \
415 sizeof(((struct cpsw_hw_stats *)0)->m), \
416 offsetof(struct cpsw_hw_stats, m)
417 #define CPDMA_RX_STAT(m) CPDMA_RX_STATS, \
418 sizeof(((struct cpdma_chan_stats *)0)->m), \
419 offsetof(struct cpdma_chan_stats, m)
420 #define CPDMA_TX_STAT(m) CPDMA_TX_STATS, \
421 sizeof(((struct cpdma_chan_stats *)0)->m), \
422 offsetof(struct cpdma_chan_stats, m)
424 static const struct cpsw_stats cpsw_gstrings_stats[] = {
425 { "Good Rx Frames", CPSW_STAT(rxgoodframes) },
426 { "Broadcast Rx Frames", CPSW_STAT(rxbroadcastframes) },
427 { "Multicast Rx Frames", CPSW_STAT(rxmulticastframes) },
428 { "Pause Rx Frames", CPSW_STAT(rxpauseframes) },
429 { "Rx CRC Errors", CPSW_STAT(rxcrcerrors) },
430 { "Rx Align/Code Errors", CPSW_STAT(rxaligncodeerrors) },
431 { "Oversize Rx Frames", CPSW_STAT(rxoversizedframes) },
432 { "Rx Jabbers", CPSW_STAT(rxjabberframes) },
433 { "Undersize (Short) Rx Frames", CPSW_STAT(rxundersizedframes) },
434 { "Rx Fragments", CPSW_STAT(rxfragments) },
435 { "Rx Octets", CPSW_STAT(rxoctets) },
436 { "Good Tx Frames", CPSW_STAT(txgoodframes) },
437 { "Broadcast Tx Frames", CPSW_STAT(txbroadcastframes) },
438 { "Multicast Tx Frames", CPSW_STAT(txmulticastframes) },
439 { "Pause Tx Frames", CPSW_STAT(txpauseframes) },
440 { "Deferred Tx Frames", CPSW_STAT(txdeferredframes) },
441 { "Collisions", CPSW_STAT(txcollisionframes) },
442 { "Single Collision Tx Frames", CPSW_STAT(txsinglecollframes) },
443 { "Multiple Collision Tx Frames", CPSW_STAT(txmultcollframes) },
444 { "Excessive Collisions", CPSW_STAT(txexcessivecollisions) },
445 { "Late Collisions", CPSW_STAT(txlatecollisions) },
446 { "Tx Underrun", CPSW_STAT(txunderrun) },
447 { "Carrier Sense Errors", CPSW_STAT(txcarriersenseerrors) },
448 { "Tx Octets", CPSW_STAT(txoctets) },
449 { "Rx + Tx 64 Octet Frames", CPSW_STAT(octetframes64) },
450 { "Rx + Tx 65-127 Octet Frames", CPSW_STAT(octetframes65t127) },
451 { "Rx + Tx 128-255 Octet Frames", CPSW_STAT(octetframes128t255) },
452 { "Rx + Tx 256-511 Octet Frames", CPSW_STAT(octetframes256t511) },
453 { "Rx + Tx 512-1023 Octet Frames", CPSW_STAT(octetframes512t1023) },
454 { "Rx + Tx 1024-Up Octet Frames", CPSW_STAT(octetframes1024tup) },
455 { "Net Octets", CPSW_STAT(netoctets) },
456 { "Rx Start of Frame Overruns", CPSW_STAT(rxsofoverruns) },
457 { "Rx Middle of Frame Overruns", CPSW_STAT(rxmofoverruns) },
458 { "Rx DMA Overruns", CPSW_STAT(rxdmaoverruns) },
459 { "Rx DMA chan: head_enqueue", CPDMA_RX_STAT(head_enqueue) },
460 { "Rx DMA chan: tail_enqueue", CPDMA_RX_STAT(tail_enqueue) },
461 { "Rx DMA chan: pad_enqueue", CPDMA_RX_STAT(pad_enqueue) },
462 { "Rx DMA chan: misqueued", CPDMA_RX_STAT(misqueued) },
463 { "Rx DMA chan: desc_alloc_fail", CPDMA_RX_STAT(desc_alloc_fail) },
464 { "Rx DMA chan: pad_alloc_fail", CPDMA_RX_STAT(pad_alloc_fail) },
465 { "Rx DMA chan: runt_receive_buf", CPDMA_RX_STAT(runt_receive_buff) },
466 { "Rx DMA chan: runt_transmit_buf", CPDMA_RX_STAT(runt_transmit_buff) },
467 { "Rx DMA chan: empty_dequeue", CPDMA_RX_STAT(empty_dequeue) },
468 { "Rx DMA chan: busy_dequeue", CPDMA_RX_STAT(busy_dequeue) },
469 { "Rx DMA chan: good_dequeue", CPDMA_RX_STAT(good_dequeue) },
470 { "Rx DMA chan: requeue", CPDMA_RX_STAT(requeue) },
471 { "Rx DMA chan: teardown_dequeue", CPDMA_RX_STAT(teardown_dequeue) },
472 { "Tx DMA chan: head_enqueue", CPDMA_TX_STAT(head_enqueue) },
473 { "Tx DMA chan: tail_enqueue", CPDMA_TX_STAT(tail_enqueue) },
474 { "Tx DMA chan: pad_enqueue", CPDMA_TX_STAT(pad_enqueue) },
475 { "Tx DMA chan: misqueued", CPDMA_TX_STAT(misqueued) },
476 { "Tx DMA chan: desc_alloc_fail", CPDMA_TX_STAT(desc_alloc_fail) },
477 { "Tx DMA chan: pad_alloc_fail", CPDMA_TX_STAT(pad_alloc_fail) },
478 { "Tx DMA chan: runt_receive_buf", CPDMA_TX_STAT(runt_receive_buff) },
479 { "Tx DMA chan: runt_transmit_buf", CPDMA_TX_STAT(runt_transmit_buff) },
480 { "Tx DMA chan: empty_dequeue", CPDMA_TX_STAT(empty_dequeue) },
481 { "Tx DMA chan: busy_dequeue", CPDMA_TX_STAT(busy_dequeue) },
482 { "Tx DMA chan: good_dequeue", CPDMA_TX_STAT(good_dequeue) },
483 { "Tx DMA chan: requeue", CPDMA_TX_STAT(requeue) },
484 { "Tx DMA chan: teardown_dequeue", CPDMA_TX_STAT(teardown_dequeue) },
487 #define CPSW_STATS_LEN ARRAY_SIZE(cpsw_gstrings_stats)
489 #define napi_to_priv(napi) container_of(napi, struct cpsw_priv, napi)
490 #define for_each_slave(priv, func, arg...) \
492 struct cpsw_slave *slave; \
494 if (priv->data.dual_emac) \
495 (func)((priv)->slaves + priv->emac_port, ##arg);\
497 for (n = (priv)->data.slaves, \
498 slave = (priv)->slaves; \
500 (func)(slave++, ##arg); \
502 #define cpsw_get_slave_ndev(priv, __slave_no__) \
503 ((__slave_no__ < priv->data.slaves) ? \
504 priv->slaves[__slave_no__].ndev : NULL)
505 #define cpsw_get_slave_priv(priv, __slave_no__) \
506 (((__slave_no__ < priv->data.slaves) && \
507 (priv->slaves[__slave_no__].ndev)) ? \
508 netdev_priv(priv->slaves[__slave_no__].ndev) : NULL) \
510 #define cpsw_dual_emac_src_port_detect(status, priv, ndev, skb) \
512 if (!priv->data.dual_emac) \
514 if (CPDMA_RX_SOURCE_PORT(status) == 1) { \
515 ndev = cpsw_get_slave_ndev(priv, 0); \
516 priv = netdev_priv(ndev); \
518 } else if (CPDMA_RX_SOURCE_PORT(status) == 2) { \
519 ndev = cpsw_get_slave_ndev(priv, 1); \
520 priv = netdev_priv(ndev); \
524 #define cpsw_add_mcast(priv, addr) \
526 if (priv->data.dual_emac) { \
527 struct cpsw_slave *slave = priv->slaves + \
529 int slave_port = cpsw_get_slave_port(priv, \
531 cpsw_ale_add_mcast(priv->ale, addr, \
532 1 << slave_port | 1 << priv->host_port, \
533 ALE_VLAN, slave->port_vlan, 0); \
535 cpsw_ale_add_mcast(priv->ale, addr, \
536 ALE_ALL_PORTS << priv->host_port, \
541 static inline int cpsw_get_slave_port(struct cpsw_priv *priv, u32 slave_num)
543 if (priv->host_port == 0)
544 return slave_num + 1;
549 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
551 struct cpsw_priv *priv = netdev_priv(ndev);
552 struct cpsw_ale *ale = priv->ale;
555 if (priv->data.dual_emac) {
558 /* Enabling promiscuous mode for one interface will be
559 * common for both the interface as the interface shares
560 * the same hardware resource.
562 for (i = 0; i < priv->data.slaves; i++)
563 if (priv->slaves[i].ndev->flags & IFF_PROMISC)
566 if (!enable && flag) {
568 dev_err(&ndev->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
573 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 1);
575 dev_dbg(&ndev->dev, "promiscuity enabled\n");
578 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 0);
579 dev_dbg(&ndev->dev, "promiscuity disabled\n");
583 unsigned long timeout = jiffies + HZ;
585 /* Disable Learn for all ports (host is port 0 and slaves are port 1 and up */
586 for (i = 0; i <= priv->data.slaves; i++) {
587 cpsw_ale_control_set(ale, i,
588 ALE_PORT_NOLEARN, 1);
589 cpsw_ale_control_set(ale, i,
590 ALE_PORT_NO_SA_UPDATE, 1);
593 /* Clear All Untouched entries */
594 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
597 if (cpsw_ale_control_get(ale, 0, ALE_AGEOUT))
599 } while (time_after(timeout, jiffies));
600 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
602 /* Clear all mcast from ALE */
603 cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS <<
604 priv->host_port, -1);
606 /* Flood All Unicast Packets to Host port */
607 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1);
608 dev_dbg(&ndev->dev, "promiscuity enabled\n");
610 /* Don't Flood All Unicast Packets to Host port */
611 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);
613 /* Enable Learn for all ports (host is port 0 and slaves are port 1 and up */
614 for (i = 0; i <= priv->data.slaves; i++) {
615 cpsw_ale_control_set(ale, i,
616 ALE_PORT_NOLEARN, 0);
617 cpsw_ale_control_set(ale, i,
618 ALE_PORT_NO_SA_UPDATE, 0);
620 dev_dbg(&ndev->dev, "promiscuity disabled\n");
625 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
627 struct cpsw_priv *priv = netdev_priv(ndev);
630 if (priv->data.dual_emac)
631 vid = priv->slaves[priv->emac_port].port_vlan;
633 vid = priv->data.default_vlan;
635 if (ndev->flags & IFF_PROMISC) {
636 /* Enable promiscuous mode */
637 cpsw_set_promiscious(ndev, true);
638 cpsw_ale_set_allmulti(priv->ale, IFF_ALLMULTI);
641 /* Disable promiscuous mode */
642 cpsw_set_promiscious(ndev, false);
645 /* Restore allmulti on vlans if necessary */
646 cpsw_ale_set_allmulti(priv->ale, priv->ndev->flags & IFF_ALLMULTI);
648 /* Clear all mcast from ALE */
649 cpsw_ale_flush_multicast(priv->ale, ALE_ALL_PORTS << priv->host_port,
652 if (!netdev_mc_empty(ndev)) {
653 struct netdev_hw_addr *ha;
655 /* program multicast address list into ALE register */
656 netdev_for_each_mc_addr(ha, ndev) {
657 cpsw_add_mcast(priv, (u8 *)ha->addr);
662 static void cpsw_intr_enable(struct cpsw_priv *priv)
664 __raw_writel(0xFF, &priv->wr_regs->tx_en);
665 __raw_writel(0xFF, &priv->wr_regs->rx_en);
667 cpdma_ctlr_int_ctrl(priv->dma, true);
671 static void cpsw_intr_disable(struct cpsw_priv *priv)
673 __raw_writel(0, &priv->wr_regs->tx_en);
674 __raw_writel(0, &priv->wr_regs->rx_en);
676 cpdma_ctlr_int_ctrl(priv->dma, false);
680 static void cpsw_tx_handler(void *token, int len, int status)
682 struct sk_buff *skb = token;
683 struct net_device *ndev = skb->dev;
684 struct cpsw_priv *priv = netdev_priv(ndev);
686 /* Check whether the queue is stopped due to stalled tx dma, if the
687 * queue is stopped then start the queue as we have free desc for tx
689 if (unlikely(netif_queue_stopped(ndev)))
690 netif_wake_queue(ndev);
691 cpts_tx_timestamp(priv->cpts, skb);
692 ndev->stats.tx_packets++;
693 ndev->stats.tx_bytes += len;
694 dev_kfree_skb_any(skb);
697 static void cpsw_rx_handler(void *token, int len, int status)
699 struct sk_buff *skb = token;
700 struct sk_buff *new_skb;
701 struct net_device *ndev = skb->dev;
702 struct cpsw_priv *priv = netdev_priv(ndev);
705 cpsw_dual_emac_src_port_detect(status, priv, ndev, skb);
707 if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
708 bool ndev_status = false;
709 struct cpsw_slave *slave = priv->slaves;
712 if (priv->data.dual_emac) {
713 /* In dual emac mode check for all interfaces */
714 for (n = priv->data.slaves; n; n--, slave++)
715 if (netif_running(slave->ndev))
719 if (ndev_status && (status >= 0)) {
720 /* The packet received is for the interface which
721 * is already down and the other interface is up
722 * and running, instead of freeing which results
723 * in reducing of the number of rx descriptor in
724 * DMA engine, requeue skb back to cpdma.
730 /* the interface is going down, skbs are purged */
731 dev_kfree_skb_any(skb);
735 new_skb = netdev_alloc_skb_ip_align(ndev, priv->rx_packet_max);
738 cpts_rx_timestamp(priv->cpts, skb);
739 skb->protocol = eth_type_trans(skb, ndev);
740 netif_receive_skb(skb);
741 ndev->stats.rx_bytes += len;
742 ndev->stats.rx_packets++;
744 ndev->stats.rx_dropped++;
749 ret = cpdma_chan_submit(priv->rxch, new_skb, new_skb->data,
750 skb_tailroom(new_skb), 0);
751 if (WARN_ON(ret < 0))
752 dev_kfree_skb_any(new_skb);
755 static irqreturn_t cpsw_tx_interrupt(int irq, void *dev_id)
757 struct cpsw_priv *priv = dev_id;
759 writel(0, &priv->wr_regs->tx_en);
760 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
762 if (priv->quirk_irq) {
763 disable_irq_nosync(priv->irqs_table[1]);
764 priv->tx_irq_disabled = true;
767 napi_schedule(&priv->napi_tx);
771 static irqreturn_t cpsw_rx_interrupt(int irq, void *dev_id)
773 struct cpsw_priv *priv = dev_id;
775 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
776 writel(0, &priv->wr_regs->rx_en);
778 if (priv->quirk_irq) {
779 disable_irq_nosync(priv->irqs_table[0]);
780 priv->rx_irq_disabled = true;
783 napi_schedule(&priv->napi_rx);
787 static int cpsw_tx_poll(struct napi_struct *napi_tx, int budget)
789 struct cpsw_priv *priv = napi_to_priv(napi_tx);
792 num_tx = cpdma_chan_process(priv->txch, budget);
793 if (num_tx < budget) {
794 napi_complete(napi_tx);
795 writel(0xff, &priv->wr_regs->tx_en);
796 if (priv->quirk_irq && priv->tx_irq_disabled) {
797 priv->tx_irq_disabled = false;
798 enable_irq(priv->irqs_table[1]);
803 cpsw_dbg(priv, intr, "poll %d tx pkts\n", num_tx);
808 static int cpsw_rx_poll(struct napi_struct *napi_rx, int budget)
810 struct cpsw_priv *priv = napi_to_priv(napi_rx);
813 num_rx = cpdma_chan_process(priv->rxch, budget);
814 if (num_rx < budget) {
815 napi_complete(napi_rx);
816 writel(0xff, &priv->wr_regs->rx_en);
817 if (priv->quirk_irq && priv->rx_irq_disabled) {
818 priv->rx_irq_disabled = false;
819 enable_irq(priv->irqs_table[0]);
824 cpsw_dbg(priv, intr, "poll %d rx pkts\n", num_rx);
829 static inline void soft_reset(const char *module, void __iomem *reg)
831 unsigned long timeout = jiffies + HZ;
833 __raw_writel(1, reg);
836 } while ((__raw_readl(reg) & 1) && time_after(timeout, jiffies));
838 WARN(__raw_readl(reg) & 1, "failed to soft-reset %s\n", module);
841 #define mac_hi(mac) (((mac)[0] << 0) | ((mac)[1] << 8) | \
842 ((mac)[2] << 16) | ((mac)[3] << 24))
843 #define mac_lo(mac) (((mac)[4] << 0) | ((mac)[5] << 8))
845 static void cpsw_set_slave_mac(struct cpsw_slave *slave,
846 struct cpsw_priv *priv)
848 slave_write(slave, mac_hi(priv->mac_addr), SA_HI);
849 slave_write(slave, mac_lo(priv->mac_addr), SA_LO);
852 static void _cpsw_adjust_link(struct cpsw_slave *slave,
853 struct cpsw_priv *priv, bool *link)
855 struct phy_device *phy = slave->phy;
862 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
865 mac_control = priv->data.mac_control;
867 /* enable forwarding */
868 cpsw_ale_control_set(priv->ale, slave_port,
869 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
871 if (phy->speed == 1000)
872 mac_control |= BIT(7); /* GIGABITEN */
874 mac_control |= BIT(0); /* FULLDUPLEXEN */
876 /* set speed_in input in case RMII mode is used in 100Mbps */
877 if (phy->speed == 100)
878 mac_control |= BIT(15);
879 else if (phy->speed == 10)
880 mac_control |= BIT(18); /* In Band mode */
883 mac_control |= BIT(3);
886 mac_control |= BIT(4);
891 /* disable forwarding */
892 cpsw_ale_control_set(priv->ale, slave_port,
893 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
896 if (mac_control != slave->mac_control) {
897 phy_print_status(phy);
898 __raw_writel(mac_control, &slave->sliver->mac_control);
901 slave->mac_control = mac_control;
904 static void cpsw_adjust_link(struct net_device *ndev)
906 struct cpsw_priv *priv = netdev_priv(ndev);
909 for_each_slave(priv, _cpsw_adjust_link, priv, &link);
912 netif_carrier_on(ndev);
913 if (netif_running(ndev))
914 netif_wake_queue(ndev);
916 netif_carrier_off(ndev);
917 netif_stop_queue(ndev);
921 static int cpsw_get_coalesce(struct net_device *ndev,
922 struct ethtool_coalesce *coal)
924 struct cpsw_priv *priv = netdev_priv(ndev);
926 coal->rx_coalesce_usecs = priv->coal_intvl;
930 static int cpsw_set_coalesce(struct net_device *ndev,
931 struct ethtool_coalesce *coal)
933 struct cpsw_priv *priv = netdev_priv(ndev);
935 u32 num_interrupts = 0;
940 coal_intvl = coal->rx_coalesce_usecs;
942 int_ctrl = readl(&priv->wr_regs->int_control);
943 prescale = priv->bus_freq_mhz * 4;
945 if (!coal->rx_coalesce_usecs) {
946 int_ctrl &= ~(CPSW_INTPRESCALE_MASK | CPSW_INTPACEEN);
950 if (coal_intvl < CPSW_CMINTMIN_INTVL)
951 coal_intvl = CPSW_CMINTMIN_INTVL;
953 if (coal_intvl > CPSW_CMINTMAX_INTVL) {
954 /* Interrupt pacer works with 4us Pulse, we can
955 * throttle further by dilating the 4us pulse.
957 addnl_dvdr = CPSW_INTPRESCALE_MASK / prescale;
959 if (addnl_dvdr > 1) {
960 prescale *= addnl_dvdr;
961 if (coal_intvl > (CPSW_CMINTMAX_INTVL * addnl_dvdr))
962 coal_intvl = (CPSW_CMINTMAX_INTVL
966 coal_intvl = CPSW_CMINTMAX_INTVL;
970 num_interrupts = (1000 * addnl_dvdr) / coal_intvl;
971 writel(num_interrupts, &priv->wr_regs->rx_imax);
972 writel(num_interrupts, &priv->wr_regs->tx_imax);
974 int_ctrl |= CPSW_INTPACEEN;
975 int_ctrl &= (~CPSW_INTPRESCALE_MASK);
976 int_ctrl |= (prescale & CPSW_INTPRESCALE_MASK);
979 writel(int_ctrl, &priv->wr_regs->int_control);
981 cpsw_notice(priv, timer, "Set coalesce to %d usecs.\n", coal_intvl);
982 if (priv->data.dual_emac) {
985 for (i = 0; i < priv->data.slaves; i++) {
986 priv = netdev_priv(priv->slaves[i].ndev);
987 priv->coal_intvl = coal_intvl;
990 priv->coal_intvl = coal_intvl;
996 static int cpsw_get_sset_count(struct net_device *ndev, int sset)
1000 return CPSW_STATS_LEN;
1006 static void cpsw_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
1011 switch (stringset) {
1013 for (i = 0; i < CPSW_STATS_LEN; i++) {
1014 memcpy(p, cpsw_gstrings_stats[i].stat_string,
1016 p += ETH_GSTRING_LEN;
1022 static void cpsw_get_ethtool_stats(struct net_device *ndev,
1023 struct ethtool_stats *stats, u64 *data)
1025 struct cpsw_priv *priv = netdev_priv(ndev);
1026 struct cpdma_chan_stats rx_stats;
1027 struct cpdma_chan_stats tx_stats;
1032 /* Collect Davinci CPDMA stats for Rx and Tx Channel */
1033 cpdma_chan_get_stats(priv->rxch, &rx_stats);
1034 cpdma_chan_get_stats(priv->txch, &tx_stats);
1036 for (i = 0; i < CPSW_STATS_LEN; i++) {
1037 switch (cpsw_gstrings_stats[i].type) {
1039 val = readl(priv->hw_stats +
1040 cpsw_gstrings_stats[i].stat_offset);
1044 case CPDMA_RX_STATS:
1045 p = (u8 *)&rx_stats +
1046 cpsw_gstrings_stats[i].stat_offset;
1047 data[i] = *(u32 *)p;
1050 case CPDMA_TX_STATS:
1051 p = (u8 *)&tx_stats +
1052 cpsw_gstrings_stats[i].stat_offset;
1053 data[i] = *(u32 *)p;
1059 static int cpsw_common_res_usage_state(struct cpsw_priv *priv)
1062 u32 usage_count = 0;
1064 if (!priv->data.dual_emac)
1067 for (i = 0; i < priv->data.slaves; i++)
1068 if (priv->slaves[i].open_stat)
1074 static inline int cpsw_tx_packet_submit(struct net_device *ndev,
1075 struct cpsw_priv *priv, struct sk_buff *skb)
1077 if (!priv->data.dual_emac)
1078 return cpdma_chan_submit(priv->txch, skb, skb->data,
1081 if (ndev == cpsw_get_slave_ndev(priv, 0))
1082 return cpdma_chan_submit(priv->txch, skb, skb->data,
1085 return cpdma_chan_submit(priv->txch, skb, skb->data,
1089 static inline void cpsw_add_dual_emac_def_ale_entries(
1090 struct cpsw_priv *priv, struct cpsw_slave *slave,
1093 u32 port_mask = 1 << slave_port | 1 << priv->host_port;
1095 if (priv->version == CPSW_VERSION_1)
1096 slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
1098 slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
1099 cpsw_ale_add_vlan(priv->ale, slave->port_vlan, port_mask,
1100 port_mask, port_mask, 0);
1101 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1102 port_mask, ALE_VLAN, slave->port_vlan, 0);
1103 cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1104 priv->host_port, ALE_VLAN | ALE_SECURE, slave->port_vlan);
1107 static void soft_reset_slave(struct cpsw_slave *slave)
1111 snprintf(name, sizeof(name), "slave-%d", slave->slave_num);
1112 soft_reset(name, &slave->sliver->soft_reset);
1115 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
1119 soft_reset_slave(slave);
1121 /* setup priority mapping */
1122 __raw_writel(RX_PRIORITY_MAPPING, &slave->sliver->rx_pri_map);
1124 switch (priv->version) {
1125 case CPSW_VERSION_1:
1126 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
1128 case CPSW_VERSION_2:
1129 case CPSW_VERSION_3:
1130 case CPSW_VERSION_4:
1131 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
1135 /* setup max packet size, and mac address */
1136 __raw_writel(priv->rx_packet_max, &slave->sliver->rx_maxlen);
1137 cpsw_set_slave_mac(slave, priv);
1139 slave->mac_control = 0; /* no link yet */
1141 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1143 if (priv->data.dual_emac)
1144 cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
1146 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1147 1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
1149 slave->phy = phy_connect(priv->ndev, slave->data->phy_id,
1150 &cpsw_adjust_link, slave->data->phy_if);
1151 if (IS_ERR(slave->phy)) {
1152 dev_err(priv->dev, "phy %s not found on slave %d\n",
1153 slave->data->phy_id, slave->slave_num);
1156 dev_info(priv->dev, "phy found : id is : 0x%x\n",
1157 slave->phy->phy_id);
1158 phy_start(slave->phy);
1160 /* Configure GMII_SEL register */
1161 cpsw_phy_sel(&priv->pdev->dev, slave->phy->interface,
1166 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
1168 const int vlan = priv->data.default_vlan;
1169 const int port = priv->host_port;
1172 int unreg_mcast_mask;
1174 reg = (priv->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
1177 writel(vlan, &priv->host_port_regs->port_vlan);
1179 for (i = 0; i < priv->data.slaves; i++)
1180 slave_write(priv->slaves + i, vlan, reg);
1182 if (priv->ndev->flags & IFF_ALLMULTI)
1183 unreg_mcast_mask = ALE_ALL_PORTS;
1185 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1187 cpsw_ale_add_vlan(priv->ale, vlan, ALE_ALL_PORTS << port,
1188 ALE_ALL_PORTS << port, ALE_ALL_PORTS << port,
1189 unreg_mcast_mask << port);
1192 static void cpsw_init_host_port(struct cpsw_priv *priv)
1197 /* soft reset the controller and initialize ale */
1198 soft_reset("cpsw", &priv->regs->soft_reset);
1199 cpsw_ale_start(priv->ale);
1201 /* switch to vlan unaware mode */
1202 cpsw_ale_control_set(priv->ale, priv->host_port, ALE_VLAN_AWARE,
1203 CPSW_ALE_VLAN_AWARE);
1204 control_reg = readl(&priv->regs->control);
1205 control_reg |= CPSW_VLAN_AWARE;
1206 writel(control_reg, &priv->regs->control);
1207 fifo_mode = (priv->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
1208 CPSW_FIFO_NORMAL_MODE;
1209 writel(fifo_mode, &priv->host_port_regs->tx_in_ctl);
1211 /* setup host port priority mapping */
1212 __raw_writel(CPDMA_TX_PRIORITY_MAP,
1213 &priv->host_port_regs->cpdma_tx_pri_map);
1214 __raw_writel(0, &priv->host_port_regs->cpdma_rx_chan_map);
1216 cpsw_ale_control_set(priv->ale, priv->host_port,
1217 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
1219 if (!priv->data.dual_emac) {
1220 cpsw_ale_add_ucast(priv->ale, priv->mac_addr, priv->host_port,
1222 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1223 1 << priv->host_port, 0, 0, ALE_MCAST_FWD_2);
1227 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_priv *priv)
1231 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1235 phy_stop(slave->phy);
1236 phy_disconnect(slave->phy);
1238 cpsw_ale_control_set(priv->ale, slave_port,
1239 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
1242 static int cpsw_ndo_open(struct net_device *ndev)
1244 struct cpsw_priv *priv = netdev_priv(ndev);
1248 if (!cpsw_common_res_usage_state(priv))
1249 cpsw_intr_disable(priv);
1250 netif_carrier_off(ndev);
1252 pm_runtime_get_sync(&priv->pdev->dev);
1254 reg = priv->version;
1256 dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
1257 CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
1258 CPSW_RTL_VERSION(reg));
1260 /* initialize host and slave ports */
1261 if (!cpsw_common_res_usage_state(priv))
1262 cpsw_init_host_port(priv);
1263 for_each_slave(priv, cpsw_slave_open, priv);
1265 /* Add default VLAN */
1266 if (!priv->data.dual_emac)
1267 cpsw_add_default_vlan(priv);
1269 cpsw_ale_add_vlan(priv->ale, priv->data.default_vlan,
1270 ALE_ALL_PORTS << priv->host_port,
1271 ALE_ALL_PORTS << priv->host_port, 0, 0);
1273 if (!cpsw_common_res_usage_state(priv)) {
1274 struct cpsw_priv *priv_sl0 = cpsw_get_slave_priv(priv, 0);
1276 /* setup tx dma to fixed prio and zero offset */
1277 cpdma_control_set(priv->dma, CPDMA_TX_PRIO_FIXED, 1);
1278 cpdma_control_set(priv->dma, CPDMA_RX_BUFFER_OFFSET, 0);
1280 /* disable priority elevation */
1281 __raw_writel(0, &priv->regs->ptype);
1283 /* enable statistics collection only on all ports */
1284 __raw_writel(0x7, &priv->regs->stat_port_en);
1286 /* Enable internal fifo flow control */
1287 writel(0x7, &priv->regs->flow_control);
1289 napi_enable(&priv_sl0->napi_rx);
1290 napi_enable(&priv_sl0->napi_tx);
1292 if (priv_sl0->tx_irq_disabled) {
1293 priv_sl0->tx_irq_disabled = false;
1294 enable_irq(priv->irqs_table[1]);
1297 if (priv_sl0->rx_irq_disabled) {
1298 priv_sl0->rx_irq_disabled = false;
1299 enable_irq(priv->irqs_table[0]);
1302 if (WARN_ON(!priv->data.rx_descs))
1303 priv->data.rx_descs = 128;
1305 for (i = 0; i < priv->data.rx_descs; i++) {
1306 struct sk_buff *skb;
1309 skb = __netdev_alloc_skb_ip_align(priv->ndev,
1310 priv->rx_packet_max, GFP_KERNEL);
1313 ret = cpdma_chan_submit(priv->rxch, skb, skb->data,
1314 skb_tailroom(skb), 0);
1320 /* continue even if we didn't manage to submit all
1323 cpsw_info(priv, ifup, "submitted %d rx descriptors\n", i);
1325 if (cpts_register(&priv->pdev->dev, priv->cpts,
1326 priv->data.cpts_clock_mult,
1327 priv->data.cpts_clock_shift))
1328 dev_err(priv->dev, "error registering cpts device\n");
1332 /* Enable Interrupt pacing if configured */
1333 if (priv->coal_intvl != 0) {
1334 struct ethtool_coalesce coal;
1336 coal.rx_coalesce_usecs = (priv->coal_intvl << 4);
1337 cpsw_set_coalesce(ndev, &coal);
1340 cpdma_ctlr_start(priv->dma);
1341 cpsw_intr_enable(priv);
1343 if (priv->data.dual_emac)
1344 priv->slaves[priv->emac_port].open_stat = true;
1348 cpdma_ctlr_stop(priv->dma);
1349 for_each_slave(priv, cpsw_slave_stop, priv);
1350 pm_runtime_put_sync(&priv->pdev->dev);
1351 netif_carrier_off(priv->ndev);
1355 static int cpsw_ndo_stop(struct net_device *ndev)
1357 struct cpsw_priv *priv = netdev_priv(ndev);
1359 cpsw_info(priv, ifdown, "shutting down cpsw device\n");
1360 netif_stop_queue(priv->ndev);
1361 netif_carrier_off(priv->ndev);
1363 if (cpsw_common_res_usage_state(priv) <= 1) {
1364 struct cpsw_priv *priv_sl0 = cpsw_get_slave_priv(priv, 0);
1366 napi_disable(&priv_sl0->napi_rx);
1367 napi_disable(&priv_sl0->napi_tx);
1368 cpts_unregister(priv->cpts);
1369 cpsw_intr_disable(priv);
1370 cpdma_ctlr_stop(priv->dma);
1371 cpsw_ale_stop(priv->ale);
1373 for_each_slave(priv, cpsw_slave_stop, priv);
1374 pm_runtime_put_sync(&priv->pdev->dev);
1375 if (priv->data.dual_emac)
1376 priv->slaves[priv->emac_port].open_stat = false;
1380 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
1381 struct net_device *ndev)
1383 struct cpsw_priv *priv = netdev_priv(ndev);
1386 ndev->trans_start = jiffies;
1388 if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
1389 cpsw_err(priv, tx_err, "packet pad failed\n");
1390 ndev->stats.tx_dropped++;
1391 return NETDEV_TX_OK;
1394 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
1395 priv->cpts->tx_enable)
1396 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
1398 skb_tx_timestamp(skb);
1400 ret = cpsw_tx_packet_submit(ndev, priv, skb);
1401 if (unlikely(ret != 0)) {
1402 cpsw_err(priv, tx_err, "desc submit failed\n");
1406 /* If there is no more tx desc left free then we need to
1407 * tell the kernel to stop sending us tx frames.
1409 if (unlikely(!cpdma_check_free_tx_desc(priv->txch)))
1410 netif_stop_queue(ndev);
1412 return NETDEV_TX_OK;
1414 ndev->stats.tx_dropped++;
1415 netif_stop_queue(ndev);
1416 return NETDEV_TX_BUSY;
1419 #ifdef CONFIG_TI_CPTS
1421 static void cpsw_hwtstamp_v1(struct cpsw_priv *priv)
1423 struct cpsw_slave *slave = &priv->slaves[priv->data.active_slave];
1426 if (!priv->cpts->tx_enable && !priv->cpts->rx_enable) {
1427 slave_write(slave, 0, CPSW1_TS_CTL);
1431 seq_id = (30 << CPSW_V1_SEQ_ID_OFS_SHIFT) | ETH_P_1588;
1432 ts_en = EVENT_MSG_BITS << CPSW_V1_MSG_TYPE_OFS;
1434 if (priv->cpts->tx_enable)
1435 ts_en |= CPSW_V1_TS_TX_EN;
1437 if (priv->cpts->rx_enable)
1438 ts_en |= CPSW_V1_TS_RX_EN;
1440 slave_write(slave, ts_en, CPSW1_TS_CTL);
1441 slave_write(slave, seq_id, CPSW1_TS_SEQ_LTYPE);
1444 static void cpsw_hwtstamp_v2(struct cpsw_priv *priv)
1446 struct cpsw_slave *slave;
1449 if (priv->data.dual_emac)
1450 slave = &priv->slaves[priv->emac_port];
1452 slave = &priv->slaves[priv->data.active_slave];
1454 ctrl = slave_read(slave, CPSW2_CONTROL);
1455 switch (priv->version) {
1456 case CPSW_VERSION_2:
1457 ctrl &= ~CTRL_V2_ALL_TS_MASK;
1459 if (priv->cpts->tx_enable)
1460 ctrl |= CTRL_V2_TX_TS_BITS;
1462 if (priv->cpts->rx_enable)
1463 ctrl |= CTRL_V2_RX_TS_BITS;
1465 case CPSW_VERSION_3:
1467 ctrl &= ~CTRL_V3_ALL_TS_MASK;
1469 if (priv->cpts->tx_enable)
1470 ctrl |= CTRL_V3_TX_TS_BITS;
1472 if (priv->cpts->rx_enable)
1473 ctrl |= CTRL_V3_RX_TS_BITS;
1477 mtype = (30 << TS_SEQ_ID_OFFSET_SHIFT) | EVENT_MSG_BITS;
1479 slave_write(slave, mtype, CPSW2_TS_SEQ_MTYPE);
1480 slave_write(slave, ctrl, CPSW2_CONTROL);
1481 __raw_writel(ETH_P_1588, &priv->regs->ts_ltype);
1484 static int cpsw_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
1486 struct cpsw_priv *priv = netdev_priv(dev);
1487 struct cpts *cpts = priv->cpts;
1488 struct hwtstamp_config cfg;
1490 if (priv->version != CPSW_VERSION_1 &&
1491 priv->version != CPSW_VERSION_2 &&
1492 priv->version != CPSW_VERSION_3)
1495 if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
1498 /* reserved for future extensions */
1502 if (cfg.tx_type != HWTSTAMP_TX_OFF && cfg.tx_type != HWTSTAMP_TX_ON)
1505 switch (cfg.rx_filter) {
1506 case HWTSTAMP_FILTER_NONE:
1507 cpts->rx_enable = 0;
1509 case HWTSTAMP_FILTER_ALL:
1510 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
1511 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
1512 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
1514 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
1515 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
1516 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
1517 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
1518 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
1519 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
1520 case HWTSTAMP_FILTER_PTP_V2_EVENT:
1521 case HWTSTAMP_FILTER_PTP_V2_SYNC:
1522 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
1523 cpts->rx_enable = 1;
1524 cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
1530 cpts->tx_enable = cfg.tx_type == HWTSTAMP_TX_ON;
1532 switch (priv->version) {
1533 case CPSW_VERSION_1:
1534 cpsw_hwtstamp_v1(priv);
1536 case CPSW_VERSION_2:
1537 case CPSW_VERSION_3:
1538 cpsw_hwtstamp_v2(priv);
1544 return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1547 static int cpsw_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
1549 struct cpsw_priv *priv = netdev_priv(dev);
1550 struct cpts *cpts = priv->cpts;
1551 struct hwtstamp_config cfg;
1553 if (priv->version != CPSW_VERSION_1 &&
1554 priv->version != CPSW_VERSION_2 &&
1555 priv->version != CPSW_VERSION_3)
1559 cfg.tx_type = cpts->tx_enable ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF;
1560 cfg.rx_filter = (cpts->rx_enable ?
1561 HWTSTAMP_FILTER_PTP_V2_EVENT : HWTSTAMP_FILTER_NONE);
1563 return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1566 #endif /*CONFIG_TI_CPTS*/
1568 static int cpsw_ndo_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
1570 struct cpsw_priv *priv = netdev_priv(dev);
1571 int slave_no = cpsw_slave_index(priv);
1573 if (!netif_running(dev))
1577 #ifdef CONFIG_TI_CPTS
1579 return cpsw_hwtstamp_set(dev, req);
1581 return cpsw_hwtstamp_get(dev, req);
1585 if (!priv->slaves[slave_no].phy)
1587 return phy_mii_ioctl(priv->slaves[slave_no].phy, req, cmd);
1590 static void cpsw_ndo_tx_timeout(struct net_device *ndev)
1592 struct cpsw_priv *priv = netdev_priv(ndev);
1594 cpsw_err(priv, tx_err, "transmit timeout, restarting dma\n");
1595 ndev->stats.tx_errors++;
1596 cpsw_intr_disable(priv);
1597 cpdma_chan_stop(priv->txch);
1598 cpdma_chan_start(priv->txch);
1599 cpsw_intr_enable(priv);
1602 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
1604 struct cpsw_priv *priv = netdev_priv(ndev);
1605 struct sockaddr *addr = (struct sockaddr *)p;
1609 if (!is_valid_ether_addr(addr->sa_data))
1610 return -EADDRNOTAVAIL;
1612 if (priv->data.dual_emac) {
1613 vid = priv->slaves[priv->emac_port].port_vlan;
1617 cpsw_ale_del_ucast(priv->ale, priv->mac_addr, priv->host_port,
1619 cpsw_ale_add_ucast(priv->ale, addr->sa_data, priv->host_port,
1622 memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
1623 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
1624 for_each_slave(priv, cpsw_set_slave_mac, priv);
1629 #ifdef CONFIG_NET_POLL_CONTROLLER
1630 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1632 struct cpsw_priv *priv = netdev_priv(ndev);
1634 cpsw_intr_disable(priv);
1635 cpsw_rx_interrupt(priv->irqs_table[0], priv);
1636 cpsw_tx_interrupt(priv->irqs_table[1], priv);
1637 cpsw_intr_enable(priv);
1641 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
1645 int unreg_mcast_mask = 0;
1648 if (priv->data.dual_emac) {
1649 port_mask = (1 << (priv->emac_port + 1)) | ALE_PORT_HOST;
1651 if (priv->ndev->flags & IFF_ALLMULTI)
1652 unreg_mcast_mask = port_mask;
1654 port_mask = ALE_ALL_PORTS;
1656 if (priv->ndev->flags & IFF_ALLMULTI)
1657 unreg_mcast_mask = ALE_ALL_PORTS;
1659 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1662 ret = cpsw_ale_add_vlan(priv->ale, vid, port_mask, 0, port_mask,
1663 unreg_mcast_mask << priv->host_port);
1667 ret = cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1668 priv->host_port, ALE_VLAN, vid);
1672 ret = cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1673 port_mask, ALE_VLAN, vid, 0);
1675 goto clean_vlan_ucast;
1679 cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1680 priv->host_port, ALE_VLAN, vid);
1682 cpsw_ale_del_vlan(priv->ale, vid, 0);
1686 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1687 __be16 proto, u16 vid)
1689 struct cpsw_priv *priv = netdev_priv(ndev);
1691 if (vid == priv->data.default_vlan)
1694 if (priv->data.dual_emac) {
1695 /* In dual EMAC, reserved VLAN id should not be used for
1696 * creating VLAN interfaces as this can break the dual
1697 * EMAC port separation
1701 for (i = 0; i < priv->data.slaves; i++) {
1702 if (vid == priv->slaves[i].port_vlan)
1707 dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1708 return cpsw_add_vlan_ale_entry(priv, vid);
1711 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1712 __be16 proto, u16 vid)
1714 struct cpsw_priv *priv = netdev_priv(ndev);
1717 if (vid == priv->data.default_vlan)
1720 if (priv->data.dual_emac) {
1723 for (i = 0; i < priv->data.slaves; i++) {
1724 if (vid == priv->slaves[i].port_vlan)
1729 dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1730 ret = cpsw_ale_del_vlan(priv->ale, vid, 0);
1734 ret = cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1735 priv->host_port, ALE_VLAN, vid);
1739 return cpsw_ale_del_mcast(priv->ale, priv->ndev->broadcast,
1743 static const struct net_device_ops cpsw_netdev_ops = {
1744 .ndo_open = cpsw_ndo_open,
1745 .ndo_stop = cpsw_ndo_stop,
1746 .ndo_start_xmit = cpsw_ndo_start_xmit,
1747 .ndo_set_mac_address = cpsw_ndo_set_mac_address,
1748 .ndo_do_ioctl = cpsw_ndo_ioctl,
1749 .ndo_validate_addr = eth_validate_addr,
1750 .ndo_change_mtu = eth_change_mtu,
1751 .ndo_tx_timeout = cpsw_ndo_tx_timeout,
1752 .ndo_set_rx_mode = cpsw_ndo_set_rx_mode,
1753 #ifdef CONFIG_NET_POLL_CONTROLLER
1754 .ndo_poll_controller = cpsw_ndo_poll_controller,
1756 .ndo_vlan_rx_add_vid = cpsw_ndo_vlan_rx_add_vid,
1757 .ndo_vlan_rx_kill_vid = cpsw_ndo_vlan_rx_kill_vid,
1760 static int cpsw_get_regs_len(struct net_device *ndev)
1762 struct cpsw_priv *priv = netdev_priv(ndev);
1764 return priv->data.ale_entries * ALE_ENTRY_WORDS * sizeof(u32);
1767 static void cpsw_get_regs(struct net_device *ndev,
1768 struct ethtool_regs *regs, void *p)
1770 struct cpsw_priv *priv = netdev_priv(ndev);
1773 /* update CPSW IP version */
1774 regs->version = priv->version;
1776 cpsw_ale_dump(priv->ale, reg);
1779 static void cpsw_get_drvinfo(struct net_device *ndev,
1780 struct ethtool_drvinfo *info)
1782 struct cpsw_priv *priv = netdev_priv(ndev);
1784 strlcpy(info->driver, "cpsw", sizeof(info->driver));
1785 strlcpy(info->version, "1.0", sizeof(info->version));
1786 strlcpy(info->bus_info, priv->pdev->name, sizeof(info->bus_info));
1789 static u32 cpsw_get_msglevel(struct net_device *ndev)
1791 struct cpsw_priv *priv = netdev_priv(ndev);
1792 return priv->msg_enable;
1795 static void cpsw_set_msglevel(struct net_device *ndev, u32 value)
1797 struct cpsw_priv *priv = netdev_priv(ndev);
1798 priv->msg_enable = value;
1801 static int cpsw_get_ts_info(struct net_device *ndev,
1802 struct ethtool_ts_info *info)
1804 #ifdef CONFIG_TI_CPTS
1805 struct cpsw_priv *priv = netdev_priv(ndev);
1807 info->so_timestamping =
1808 SOF_TIMESTAMPING_TX_HARDWARE |
1809 SOF_TIMESTAMPING_TX_SOFTWARE |
1810 SOF_TIMESTAMPING_RX_HARDWARE |
1811 SOF_TIMESTAMPING_RX_SOFTWARE |
1812 SOF_TIMESTAMPING_SOFTWARE |
1813 SOF_TIMESTAMPING_RAW_HARDWARE;
1814 info->phc_index = priv->cpts->phc_index;
1816 (1 << HWTSTAMP_TX_OFF) |
1817 (1 << HWTSTAMP_TX_ON);
1819 (1 << HWTSTAMP_FILTER_NONE) |
1820 (1 << HWTSTAMP_FILTER_PTP_V2_EVENT);
1822 info->so_timestamping =
1823 SOF_TIMESTAMPING_TX_SOFTWARE |
1824 SOF_TIMESTAMPING_RX_SOFTWARE |
1825 SOF_TIMESTAMPING_SOFTWARE;
1826 info->phc_index = -1;
1828 info->rx_filters = 0;
1833 static int cpsw_get_settings(struct net_device *ndev,
1834 struct ethtool_cmd *ecmd)
1836 struct cpsw_priv *priv = netdev_priv(ndev);
1837 int slave_no = cpsw_slave_index(priv);
1839 if (priv->slaves[slave_no].phy)
1840 return phy_ethtool_gset(priv->slaves[slave_no].phy, ecmd);
1845 static int cpsw_set_settings(struct net_device *ndev, struct ethtool_cmd *ecmd)
1847 struct cpsw_priv *priv = netdev_priv(ndev);
1848 int slave_no = cpsw_slave_index(priv);
1850 if (priv->slaves[slave_no].phy)
1851 return phy_ethtool_sset(priv->slaves[slave_no].phy, ecmd);
1856 static void cpsw_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1858 struct cpsw_priv *priv = netdev_priv(ndev);
1859 int slave_no = cpsw_slave_index(priv);
1864 if (priv->slaves[slave_no].phy)
1865 phy_ethtool_get_wol(priv->slaves[slave_no].phy, wol);
1868 static int cpsw_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1870 struct cpsw_priv *priv = netdev_priv(ndev);
1871 int slave_no = cpsw_slave_index(priv);
1873 if (priv->slaves[slave_no].phy)
1874 return phy_ethtool_set_wol(priv->slaves[slave_no].phy, wol);
1879 static void cpsw_get_pauseparam(struct net_device *ndev,
1880 struct ethtool_pauseparam *pause)
1882 struct cpsw_priv *priv = netdev_priv(ndev);
1884 pause->autoneg = AUTONEG_DISABLE;
1885 pause->rx_pause = priv->rx_pause ? true : false;
1886 pause->tx_pause = priv->tx_pause ? true : false;
1889 static int cpsw_set_pauseparam(struct net_device *ndev,
1890 struct ethtool_pauseparam *pause)
1892 struct cpsw_priv *priv = netdev_priv(ndev);
1895 priv->rx_pause = pause->rx_pause ? true : false;
1896 priv->tx_pause = pause->tx_pause ? true : false;
1898 for_each_slave(priv, _cpsw_adjust_link, priv, &link);
1903 static const struct ethtool_ops cpsw_ethtool_ops = {
1904 .get_drvinfo = cpsw_get_drvinfo,
1905 .get_msglevel = cpsw_get_msglevel,
1906 .set_msglevel = cpsw_set_msglevel,
1907 .get_link = ethtool_op_get_link,
1908 .get_ts_info = cpsw_get_ts_info,
1909 .get_settings = cpsw_get_settings,
1910 .set_settings = cpsw_set_settings,
1911 .get_coalesce = cpsw_get_coalesce,
1912 .set_coalesce = cpsw_set_coalesce,
1913 .get_sset_count = cpsw_get_sset_count,
1914 .get_strings = cpsw_get_strings,
1915 .get_ethtool_stats = cpsw_get_ethtool_stats,
1916 .get_pauseparam = cpsw_get_pauseparam,
1917 .set_pauseparam = cpsw_set_pauseparam,
1918 .get_wol = cpsw_get_wol,
1919 .set_wol = cpsw_set_wol,
1920 .get_regs_len = cpsw_get_regs_len,
1921 .get_regs = cpsw_get_regs,
1924 static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv,
1925 u32 slave_reg_ofs, u32 sliver_reg_ofs)
1927 void __iomem *regs = priv->regs;
1928 int slave_num = slave->slave_num;
1929 struct cpsw_slave_data *data = priv->data.slave_data + slave_num;
1932 slave->regs = regs + slave_reg_ofs;
1933 slave->sliver = regs + sliver_reg_ofs;
1934 slave->port_vlan = data->dual_emac_res_vlan;
1937 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1938 struct platform_device *pdev)
1940 struct device_node *node = pdev->dev.of_node;
1941 struct device_node *slave_node;
1948 if (of_property_read_u32(node, "slaves", &prop)) {
1949 dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1952 data->slaves = prop;
1954 if (of_property_read_u32(node, "active_slave", &prop)) {
1955 dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1958 data->active_slave = prop;
1960 if (of_property_read_u32(node, "cpts_clock_mult", &prop)) {
1961 dev_err(&pdev->dev, "Missing cpts_clock_mult property in the DT.\n");
1964 data->cpts_clock_mult = prop;
1966 if (of_property_read_u32(node, "cpts_clock_shift", &prop)) {
1967 dev_err(&pdev->dev, "Missing cpts_clock_shift property in the DT.\n");
1970 data->cpts_clock_shift = prop;
1972 data->slave_data = devm_kzalloc(&pdev->dev, data->slaves
1973 * sizeof(struct cpsw_slave_data),
1975 if (!data->slave_data)
1978 if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1979 dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1982 data->channels = prop;
1984 if (of_property_read_u32(node, "ale_entries", &prop)) {
1985 dev_err(&pdev->dev, "Missing ale_entries property in the DT.\n");
1988 data->ale_entries = prop;
1990 if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1991 dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");
1994 data->bd_ram_size = prop;
1996 if (of_property_read_u32(node, "rx_descs", &prop)) {
1997 dev_err(&pdev->dev, "Missing rx_descs property in the DT.\n");
2000 data->rx_descs = prop;
2002 if (of_property_read_u32(node, "mac_control", &prop)) {
2003 dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
2006 data->mac_control = prop;
2008 if (of_property_read_bool(node, "dual_emac"))
2009 data->dual_emac = 1;
2012 * Populate all the child nodes here...
2014 ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
2015 /* We do not want to force this, as in some cases may not have child */
2017 dev_warn(&pdev->dev, "Doesn't have any child node\n");
2019 for_each_child_of_node(node, slave_node) {
2020 struct cpsw_slave_data *slave_data = data->slave_data + i;
2021 const void *mac_addr = NULL;
2025 struct device_node *mdio_node;
2026 struct platform_device *mdio;
2028 /* This is no slave child node, continue */
2029 if (strcmp(slave_node->name, "slave"))
2032 parp = of_get_property(slave_node, "phy_id", &lenp);
2033 if ((parp == NULL) || (lenp != (sizeof(void *) * 2))) {
2034 dev_err(&pdev->dev, "Missing slave[%d] phy_id property\n", i);
2037 mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
2038 phyid = be32_to_cpup(parp+1);
2039 mdio = of_find_device_by_node(mdio_node);
2040 of_node_put(mdio_node);
2042 dev_err(&pdev->dev, "Missing mdio platform device\n");
2045 snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
2046 PHY_ID_FMT, mdio->name, phyid);
2048 slave_data->phy_if = of_get_phy_mode(slave_node);
2049 if (slave_data->phy_if < 0) {
2050 dev_err(&pdev->dev, "Missing or malformed slave[%d] phy-mode property\n",
2052 return slave_data->phy_if;
2056 mac_addr = of_get_mac_address(slave_node);
2058 memcpy(slave_data->mac_addr, mac_addr, ETH_ALEN);
2060 ret = ti_cm_get_macid(&pdev->dev, i,
2061 slave_data->mac_addr);
2065 if (data->dual_emac) {
2066 if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
2068 dev_err(&pdev->dev, "Missing dual_emac_res_vlan in DT.\n");
2069 slave_data->dual_emac_res_vlan = i+1;
2070 dev_err(&pdev->dev, "Using %d as Reserved VLAN for %d slave\n",
2071 slave_data->dual_emac_res_vlan, i);
2073 slave_data->dual_emac_res_vlan = prop;
2078 if (i == data->slaves)
2085 static int cpsw_probe_dual_emac(struct platform_device *pdev,
2086 struct cpsw_priv *priv)
2088 struct cpsw_platform_data *data = &priv->data;
2089 struct net_device *ndev;
2090 struct cpsw_priv *priv_sl2;
2093 ndev = alloc_etherdev(sizeof(struct cpsw_priv));
2095 dev_err(&pdev->dev, "cpsw: error allocating net_device\n");
2099 priv_sl2 = netdev_priv(ndev);
2100 spin_lock_init(&priv_sl2->lock);
2101 priv_sl2->data = *data;
2102 priv_sl2->pdev = pdev;
2103 priv_sl2->ndev = ndev;
2104 priv_sl2->dev = &ndev->dev;
2105 priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
2106 priv_sl2->rx_packet_max = max(rx_packet_max, 128);
2108 if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
2109 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
2111 dev_info(&pdev->dev, "cpsw: Detected MACID = %pM\n", priv_sl2->mac_addr);
2113 random_ether_addr(priv_sl2->mac_addr);
2114 dev_info(&pdev->dev, "cpsw: Random MACID = %pM\n", priv_sl2->mac_addr);
2116 memcpy(ndev->dev_addr, priv_sl2->mac_addr, ETH_ALEN);
2118 priv_sl2->slaves = priv->slaves;
2119 priv_sl2->clk = priv->clk;
2121 priv_sl2->coal_intvl = 0;
2122 priv_sl2->bus_freq_mhz = priv->bus_freq_mhz;
2124 priv_sl2->regs = priv->regs;
2125 priv_sl2->host_port = priv->host_port;
2126 priv_sl2->host_port_regs = priv->host_port_regs;
2127 priv_sl2->wr_regs = priv->wr_regs;
2128 priv_sl2->hw_stats = priv->hw_stats;
2129 priv_sl2->dma = priv->dma;
2130 priv_sl2->txch = priv->txch;
2131 priv_sl2->rxch = priv->rxch;
2132 priv_sl2->ale = priv->ale;
2133 priv_sl2->emac_port = 1;
2134 priv->slaves[1].ndev = ndev;
2135 priv_sl2->cpts = priv->cpts;
2136 priv_sl2->version = priv->version;
2138 for (i = 0; i < priv->num_irqs; i++) {
2139 priv_sl2->irqs_table[i] = priv->irqs_table[i];
2140 priv_sl2->num_irqs = priv->num_irqs;
2142 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2144 ndev->netdev_ops = &cpsw_netdev_ops;
2145 ndev->ethtool_ops = &cpsw_ethtool_ops;
2147 /* register the network device */
2148 SET_NETDEV_DEV(ndev, &pdev->dev);
2149 ret = register_netdev(ndev);
2151 dev_err(&pdev->dev, "cpsw: error registering net device\n");
2159 #define CPSW_QUIRK_IRQ BIT(0)
2161 static struct platform_device_id cpsw_devtype[] = {
2163 /* keep it for existing comaptibles */
2165 .driver_data = CPSW_QUIRK_IRQ,
2167 .name = "am335x-cpsw",
2168 .driver_data = CPSW_QUIRK_IRQ,
2170 .name = "am4372-cpsw",
2173 .name = "dra7-cpsw",
2179 MODULE_DEVICE_TABLE(platform, cpsw_devtype);
2188 static const struct of_device_id cpsw_of_mtable[] = {
2189 { .compatible = "ti,cpsw", .data = &cpsw_devtype[CPSW], },
2190 { .compatible = "ti,am335x-cpsw", .data = &cpsw_devtype[AM335X_CPSW], },
2191 { .compatible = "ti,am4372-cpsw", .data = &cpsw_devtype[AM4372_CPSW], },
2192 { .compatible = "ti,dra7-cpsw", .data = &cpsw_devtype[DRA7_CPSW], },
2195 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
2197 static int cpsw_probe(struct platform_device *pdev)
2199 struct cpsw_platform_data *data;
2200 struct net_device *ndev;
2201 struct cpsw_priv *priv;
2202 struct cpdma_params dma_params;
2203 struct cpsw_ale_params ale_params;
2204 void __iomem *ss_regs;
2205 struct resource *res, *ss_res;
2206 const struct of_device_id *of_id;
2207 struct gpio_descs *mode;
2208 u32 slave_offset, sliver_offset, slave_size;
2212 ndev = alloc_etherdev(sizeof(struct cpsw_priv));
2214 dev_err(&pdev->dev, "error allocating net_device\n");
2218 platform_set_drvdata(pdev, ndev);
2219 priv = netdev_priv(ndev);
2220 spin_lock_init(&priv->lock);
2223 priv->dev = &ndev->dev;
2224 priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
2225 priv->rx_packet_max = max(rx_packet_max, 128);
2226 priv->cpts = devm_kzalloc(&pdev->dev, sizeof(struct cpts), GFP_KERNEL);
2228 dev_err(&pdev->dev, "error allocating cpts\n");
2230 goto clean_ndev_ret;
2233 mode = devm_gpiod_get_array_optional(&pdev->dev, "mode", GPIOD_OUT_LOW);
2235 ret = PTR_ERR(mode);
2236 dev_err(&pdev->dev, "gpio request failed, ret %d\n", ret);
2237 goto clean_ndev_ret;
2241 * This may be required here for child devices.
2243 pm_runtime_enable(&pdev->dev);
2245 /* Select default pin state */
2246 pinctrl_pm_select_default_state(&pdev->dev);
2248 if (cpsw_probe_dt(&priv->data, pdev)) {
2249 dev_err(&pdev->dev, "cpsw: platform data missing\n");
2251 goto clean_runtime_disable_ret;
2255 if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
2256 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
2257 dev_info(&pdev->dev, "Detected MACID = %pM\n", priv->mac_addr);
2259 eth_random_addr(priv->mac_addr);
2260 dev_info(&pdev->dev, "Random MACID = %pM\n", priv->mac_addr);
2263 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
2265 priv->slaves = devm_kzalloc(&pdev->dev,
2266 sizeof(struct cpsw_slave) * data->slaves,
2268 if (!priv->slaves) {
2270 goto clean_runtime_disable_ret;
2272 for (i = 0; i < data->slaves; i++)
2273 priv->slaves[i].slave_num = i;
2275 priv->slaves[0].ndev = ndev;
2276 priv->emac_port = 0;
2278 priv->clk = devm_clk_get(&pdev->dev, "fck");
2279 if (IS_ERR(priv->clk)) {
2280 dev_err(priv->dev, "fck is not found\n");
2282 goto clean_runtime_disable_ret;
2284 priv->coal_intvl = 0;
2285 priv->bus_freq_mhz = clk_get_rate(priv->clk) / 1000000;
2287 ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2288 ss_regs = devm_ioremap_resource(&pdev->dev, ss_res);
2289 if (IS_ERR(ss_regs)) {
2290 ret = PTR_ERR(ss_regs);
2291 goto clean_runtime_disable_ret;
2293 priv->regs = ss_regs;
2294 priv->host_port = HOST_PORT_NUM;
2296 /* Need to enable clocks with runtime PM api to access module
2299 pm_runtime_get_sync(&pdev->dev);
2300 priv->version = readl(&priv->regs->id_ver);
2301 pm_runtime_put_sync(&pdev->dev);
2303 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2304 priv->wr_regs = devm_ioremap_resource(&pdev->dev, res);
2305 if (IS_ERR(priv->wr_regs)) {
2306 ret = PTR_ERR(priv->wr_regs);
2307 goto clean_runtime_disable_ret;
2310 memset(&dma_params, 0, sizeof(dma_params));
2311 memset(&ale_params, 0, sizeof(ale_params));
2313 switch (priv->version) {
2314 case CPSW_VERSION_1:
2315 priv->host_port_regs = ss_regs + CPSW1_HOST_PORT_OFFSET;
2316 priv->cpts->reg = ss_regs + CPSW1_CPTS_OFFSET;
2317 priv->hw_stats = ss_regs + CPSW1_HW_STATS;
2318 dma_params.dmaregs = ss_regs + CPSW1_CPDMA_OFFSET;
2319 dma_params.txhdp = ss_regs + CPSW1_STATERAM_OFFSET;
2320 ale_params.ale_regs = ss_regs + CPSW1_ALE_OFFSET;
2321 slave_offset = CPSW1_SLAVE_OFFSET;
2322 slave_size = CPSW1_SLAVE_SIZE;
2323 sliver_offset = CPSW1_SLIVER_OFFSET;
2324 dma_params.desc_mem_phys = 0;
2326 case CPSW_VERSION_2:
2327 case CPSW_VERSION_3:
2328 case CPSW_VERSION_4:
2329 priv->host_port_regs = ss_regs + CPSW2_HOST_PORT_OFFSET;
2330 priv->cpts->reg = ss_regs + CPSW2_CPTS_OFFSET;
2331 priv->hw_stats = ss_regs + CPSW2_HW_STATS;
2332 dma_params.dmaregs = ss_regs + CPSW2_CPDMA_OFFSET;
2333 dma_params.txhdp = ss_regs + CPSW2_STATERAM_OFFSET;
2334 ale_params.ale_regs = ss_regs + CPSW2_ALE_OFFSET;
2335 slave_offset = CPSW2_SLAVE_OFFSET;
2336 slave_size = CPSW2_SLAVE_SIZE;
2337 sliver_offset = CPSW2_SLIVER_OFFSET;
2338 dma_params.desc_mem_phys =
2339 (u32 __force) ss_res->start + CPSW2_BD_OFFSET;
2342 dev_err(priv->dev, "unknown version 0x%08x\n", priv->version);
2344 goto clean_runtime_disable_ret;
2346 for (i = 0; i < priv->data.slaves; i++) {
2347 struct cpsw_slave *slave = &priv->slaves[i];
2348 cpsw_slave_init(slave, priv, slave_offset, sliver_offset);
2349 slave_offset += slave_size;
2350 sliver_offset += SLIVER_SIZE;
2353 dma_params.dev = &pdev->dev;
2354 dma_params.rxthresh = dma_params.dmaregs + CPDMA_RXTHRESH;
2355 dma_params.rxfree = dma_params.dmaregs + CPDMA_RXFREE;
2356 dma_params.rxhdp = dma_params.txhdp + CPDMA_RXHDP;
2357 dma_params.txcp = dma_params.txhdp + CPDMA_TXCP;
2358 dma_params.rxcp = dma_params.txhdp + CPDMA_RXCP;
2360 dma_params.num_chan = data->channels;
2361 dma_params.has_soft_reset = true;
2362 dma_params.min_packet_size = CPSW_MIN_PACKET_SIZE;
2363 dma_params.desc_mem_size = data->bd_ram_size;
2364 dma_params.desc_align = 16;
2365 dma_params.has_ext_regs = true;
2366 dma_params.desc_hw_addr = dma_params.desc_mem_phys;
2368 priv->dma = cpdma_ctlr_create(&dma_params);
2370 dev_err(priv->dev, "error initializing dma\n");
2372 goto clean_runtime_disable_ret;
2375 priv->txch = cpdma_chan_create(priv->dma, tx_chan_num(0),
2377 priv->rxch = cpdma_chan_create(priv->dma, rx_chan_num(0),
2380 if (WARN_ON(!priv->txch || !priv->rxch)) {
2381 dev_err(priv->dev, "error initializing dma channels\n");
2386 ale_params.dev = &ndev->dev;
2387 ale_params.ale_ageout = ale_ageout;
2388 ale_params.ale_entries = data->ale_entries;
2389 ale_params.ale_ports = data->slaves;
2391 priv->ale = cpsw_ale_create(&ale_params);
2393 dev_err(priv->dev, "error initializing ale engine\n");
2398 ndev->irq = platform_get_irq(pdev, 1);
2399 if (ndev->irq < 0) {
2400 dev_err(priv->dev, "error getting irq resource\n");
2405 of_id = of_match_device(cpsw_of_mtable, &pdev->dev);
2407 pdev->id_entry = of_id->data;
2408 if (pdev->id_entry->driver_data)
2409 priv->quirk_irq = true;
2412 /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
2413 * MISC IRQs which are always kept disabled with this driver so
2414 * we will not request them.
2416 * If anyone wants to implement support for those, make sure to
2417 * first request and append them to irqs_table array.
2421 irq = platform_get_irq(pdev, 1);
2425 priv->irqs_table[0] = irq;
2426 ret = devm_request_irq(&pdev->dev, irq, cpsw_rx_interrupt,
2427 0, dev_name(&pdev->dev), priv);
2429 dev_err(priv->dev, "error attaching irq (%d)\n", ret);
2434 irq = platform_get_irq(pdev, 2);
2438 priv->irqs_table[1] = irq;
2439 ret = devm_request_irq(&pdev->dev, irq, cpsw_tx_interrupt,
2440 0, dev_name(&pdev->dev), priv);
2442 dev_err(priv->dev, "error attaching irq (%d)\n", ret);
2447 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2449 ndev->netdev_ops = &cpsw_netdev_ops;
2450 ndev->ethtool_ops = &cpsw_ethtool_ops;
2451 netif_napi_add(ndev, &priv->napi_rx, cpsw_rx_poll, CPSW_POLL_WEIGHT);
2452 netif_napi_add(ndev, &priv->napi_tx, cpsw_tx_poll, CPSW_POLL_WEIGHT);
2454 /* register the network device */
2455 SET_NETDEV_DEV(ndev, &pdev->dev);
2456 ret = register_netdev(ndev);
2458 dev_err(priv->dev, "error registering net device\n");
2463 cpsw_notice(priv, probe, "initialized device (regs %pa, irq %d)\n",
2464 &ss_res->start, ndev->irq);
2466 if (priv->data.dual_emac) {
2467 ret = cpsw_probe_dual_emac(pdev, priv);
2469 cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
2477 cpsw_ale_destroy(priv->ale);
2479 cpdma_chan_destroy(priv->txch);
2480 cpdma_chan_destroy(priv->rxch);
2481 cpdma_ctlr_destroy(priv->dma);
2482 clean_runtime_disable_ret:
2483 pm_runtime_disable(&pdev->dev);
2485 free_netdev(priv->ndev);
2489 static int cpsw_remove_child_device(struct device *dev, void *c)
2491 struct platform_device *pdev = to_platform_device(dev);
2493 of_device_unregister(pdev);
2498 static int cpsw_remove(struct platform_device *pdev)
2500 struct net_device *ndev = platform_get_drvdata(pdev);
2501 struct cpsw_priv *priv = netdev_priv(ndev);
2503 if (priv->data.dual_emac)
2504 unregister_netdev(cpsw_get_slave_ndev(priv, 1));
2505 unregister_netdev(ndev);
2507 cpsw_ale_destroy(priv->ale);
2508 cpdma_chan_destroy(priv->txch);
2509 cpdma_chan_destroy(priv->rxch);
2510 cpdma_ctlr_destroy(priv->dma);
2511 pm_runtime_disable(&pdev->dev);
2512 device_for_each_child(&pdev->dev, NULL, cpsw_remove_child_device);
2513 if (priv->data.dual_emac)
2514 free_netdev(cpsw_get_slave_ndev(priv, 1));
2519 #ifdef CONFIG_PM_SLEEP
2520 static int cpsw_suspend(struct device *dev)
2522 struct platform_device *pdev = to_platform_device(dev);
2523 struct net_device *ndev = platform_get_drvdata(pdev);
2524 struct cpsw_priv *priv = netdev_priv(ndev);
2526 if (priv->data.dual_emac) {
2529 for (i = 0; i < priv->data.slaves; i++) {
2530 if (netif_running(priv->slaves[i].ndev))
2531 cpsw_ndo_stop(priv->slaves[i].ndev);
2532 soft_reset_slave(priv->slaves + i);
2535 if (netif_running(ndev))
2536 cpsw_ndo_stop(ndev);
2537 for_each_slave(priv, soft_reset_slave);
2540 pm_runtime_put_sync(&pdev->dev);
2542 /* Select sleep pin state */
2543 pinctrl_pm_select_sleep_state(&pdev->dev);
2548 static int cpsw_resume(struct device *dev)
2550 struct platform_device *pdev = to_platform_device(dev);
2551 struct net_device *ndev = platform_get_drvdata(pdev);
2552 struct cpsw_priv *priv = netdev_priv(ndev);
2554 pm_runtime_get_sync(&pdev->dev);
2556 /* Select default pin state */
2557 pinctrl_pm_select_default_state(&pdev->dev);
2559 if (priv->data.dual_emac) {
2562 for (i = 0; i < priv->data.slaves; i++) {
2563 if (netif_running(priv->slaves[i].ndev))
2564 cpsw_ndo_open(priv->slaves[i].ndev);
2567 if (netif_running(ndev))
2568 cpsw_ndo_open(ndev);
2574 static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
2576 static struct platform_driver cpsw_driver = {
2580 .of_match_table = cpsw_of_mtable,
2582 .probe = cpsw_probe,
2583 .remove = cpsw_remove,
2586 static int __init cpsw_init(void)
2588 return platform_driver_register(&cpsw_driver);
2590 late_initcall(cpsw_init);
2592 static void __exit cpsw_exit(void)
2594 platform_driver_unregister(&cpsw_driver);
2596 module_exit(cpsw_exit);
2598 MODULE_LICENSE("GPL");
2599 MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
2600 MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
2601 MODULE_DESCRIPTION("TI CPSW Ethernet driver");