2 * Texas Instruments Ethernet Switch Driver
4 * Copyright (C) 2012 Texas Instruments
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation version 2.
10 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
11 * kind, whether express or implied; without even the implied warranty
12 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
16 #include <linux/kernel.h>
18 #include <linux/clk.h>
19 #include <linux/timer.h>
20 #include <linux/module.h>
21 #include <linux/platform_device.h>
22 #include <linux/irqreturn.h>
23 #include <linux/interrupt.h>
24 #include <linux/if_ether.h>
25 #include <linux/etherdevice.h>
26 #include <linux/netdevice.h>
27 #include <linux/net_tstamp.h>
28 #include <linux/phy.h>
29 #include <linux/workqueue.h>
30 #include <linux/delay.h>
31 #include <linux/pm_runtime.h>
33 #include <linux/of_net.h>
34 #include <linux/of_device.h>
35 #include <linux/if_vlan.h>
37 #include <linux/pinctrl/consumer.h>
42 #include "davinci_cpdma.h"
44 #define CPSW_DEBUG (NETIF_MSG_HW | NETIF_MSG_WOL | \
45 NETIF_MSG_DRV | NETIF_MSG_LINK | \
46 NETIF_MSG_IFUP | NETIF_MSG_INTR | \
47 NETIF_MSG_PROBE | NETIF_MSG_TIMER | \
48 NETIF_MSG_IFDOWN | NETIF_MSG_RX_ERR | \
49 NETIF_MSG_TX_ERR | NETIF_MSG_TX_DONE | \
50 NETIF_MSG_PKTDATA | NETIF_MSG_TX_QUEUED | \
53 #define cpsw_info(priv, type, format, ...) \
55 if (netif_msg_##type(priv) && net_ratelimit()) \
56 dev_info(priv->dev, format, ## __VA_ARGS__); \
59 #define cpsw_err(priv, type, format, ...) \
61 if (netif_msg_##type(priv) && net_ratelimit()) \
62 dev_err(priv->dev, format, ## __VA_ARGS__); \
65 #define cpsw_dbg(priv, type, format, ...) \
67 if (netif_msg_##type(priv) && net_ratelimit()) \
68 dev_dbg(priv->dev, format, ## __VA_ARGS__); \
71 #define cpsw_notice(priv, type, format, ...) \
73 if (netif_msg_##type(priv) && net_ratelimit()) \
74 dev_notice(priv->dev, format, ## __VA_ARGS__); \
77 #define ALE_ALL_PORTS 0x7
79 #define CPSW_MAJOR_VERSION(reg) (reg >> 8 & 0x7)
80 #define CPSW_MINOR_VERSION(reg) (reg & 0xff)
81 #define CPSW_RTL_VERSION(reg) ((reg >> 11) & 0x1f)
83 #define CPSW_VERSION_1 0x19010a
84 #define CPSW_VERSION_2 0x19010c
85 #define CPSW_VERSION_3 0x19010f
86 #define CPSW_VERSION_4 0x190112
88 #define HOST_PORT_NUM 0
89 #define SLIVER_SIZE 0x40
91 #define CPSW1_HOST_PORT_OFFSET 0x028
92 #define CPSW1_SLAVE_OFFSET 0x050
93 #define CPSW1_SLAVE_SIZE 0x040
94 #define CPSW1_CPDMA_OFFSET 0x100
95 #define CPSW1_STATERAM_OFFSET 0x200
96 #define CPSW1_HW_STATS 0x400
97 #define CPSW1_CPTS_OFFSET 0x500
98 #define CPSW1_ALE_OFFSET 0x600
99 #define CPSW1_SLIVER_OFFSET 0x700
101 #define CPSW2_HOST_PORT_OFFSET 0x108
102 #define CPSW2_SLAVE_OFFSET 0x200
103 #define CPSW2_SLAVE_SIZE 0x100
104 #define CPSW2_CPDMA_OFFSET 0x800
105 #define CPSW2_HW_STATS 0x900
106 #define CPSW2_STATERAM_OFFSET 0xa00
107 #define CPSW2_CPTS_OFFSET 0xc00
108 #define CPSW2_ALE_OFFSET 0xd00
109 #define CPSW2_SLIVER_OFFSET 0xd80
110 #define CPSW2_BD_OFFSET 0x2000
112 #define CPDMA_RXTHRESH 0x0c0
113 #define CPDMA_RXFREE 0x0e0
114 #define CPDMA_TXHDP 0x00
115 #define CPDMA_RXHDP 0x20
116 #define CPDMA_TXCP 0x40
117 #define CPDMA_RXCP 0x60
119 #define CPSW_POLL_WEIGHT 64
120 #define CPSW_MIN_PACKET_SIZE 60
121 #define CPSW_MAX_PACKET_SIZE (1500 + 14 + 4 + 4)
123 #define RX_PRIORITY_MAPPING 0x76543210
124 #define TX_PRIORITY_MAPPING 0x33221100
125 #define CPDMA_TX_PRIORITY_MAP 0x76543210
127 #define CPSW_VLAN_AWARE BIT(1)
128 #define CPSW_ALE_VLAN_AWARE 1
130 #define CPSW_FIFO_NORMAL_MODE (0 << 15)
131 #define CPSW_FIFO_DUAL_MAC_MODE (1 << 15)
132 #define CPSW_FIFO_RATE_LIMIT_MODE (2 << 15)
134 #define CPSW_INTPACEEN (0x3f << 16)
135 #define CPSW_INTPRESCALE_MASK (0x7FF << 0)
136 #define CPSW_CMINTMAX_CNT 63
137 #define CPSW_CMINTMIN_CNT 2
138 #define CPSW_CMINTMAX_INTVL (1000 / CPSW_CMINTMIN_CNT)
139 #define CPSW_CMINTMIN_INTVL ((1000 / CPSW_CMINTMAX_CNT) + 1)
141 #define cpsw_enable_irq(priv) \
144 for (i = 0; i < priv->num_irqs; i++) \
145 enable_irq(priv->irqs_table[i]); \
147 #define cpsw_disable_irq(priv) \
150 for (i = 0; i < priv->num_irqs; i++) \
151 disable_irq_nosync(priv->irqs_table[i]); \
154 #define cpsw_slave_index(priv) \
155 ((priv->data.dual_emac) ? priv->emac_port : \
156 priv->data.active_slave)
158 static int debug_level;
159 module_param(debug_level, int, 0);
160 MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)");
162 static int ale_ageout = 10;
163 module_param(ale_ageout, int, 0);
164 MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)");
166 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
167 module_param(rx_packet_max, int, 0);
168 MODULE_PARM_DESC(rx_packet_max, "maximum receive packet size (bytes)");
170 struct cpsw_wr_regs {
190 struct cpsw_ss_regs {
207 #define CPSW1_MAX_BLKS 0x00 /* Maximum FIFO Blocks */
208 #define CPSW1_BLK_CNT 0x04 /* FIFO Block Usage Count (Read Only) */
209 #define CPSW1_TX_IN_CTL 0x08 /* Transmit FIFO Control */
210 #define CPSW1_PORT_VLAN 0x0c /* VLAN Register */
211 #define CPSW1_TX_PRI_MAP 0x10 /* Tx Header Priority to Switch Pri Mapping */
212 #define CPSW1_TS_CTL 0x14 /* Time Sync Control */
213 #define CPSW1_TS_SEQ_LTYPE 0x18 /* Time Sync Sequence ID Offset and Msg Type */
214 #define CPSW1_TS_VLAN 0x1c /* Time Sync VLAN1 and VLAN2 */
217 #define CPSW2_CONTROL 0x00 /* Control Register */
218 #define CPSW2_MAX_BLKS 0x08 /* Maximum FIFO Blocks */
219 #define CPSW2_BLK_CNT 0x0c /* FIFO Block Usage Count (Read Only) */
220 #define CPSW2_TX_IN_CTL 0x10 /* Transmit FIFO Control */
221 #define CPSW2_PORT_VLAN 0x14 /* VLAN Register */
222 #define CPSW2_TX_PRI_MAP 0x18 /* Tx Header Priority to Switch Pri Mapping */
223 #define CPSW2_TS_SEQ_MTYPE 0x1c /* Time Sync Sequence ID Offset and Msg Type */
225 /* CPSW_PORT_V1 and V2 */
226 #define SA_LO 0x20 /* CPGMAC_SL Source Address Low */
227 #define SA_HI 0x24 /* CPGMAC_SL Source Address High */
228 #define SEND_PERCENT 0x28 /* Transmit Queue Send Percentages */
230 /* CPSW_PORT_V2 only */
231 #define RX_DSCP_PRI_MAP0 0x30 /* Rx DSCP Priority to Rx Packet Mapping */
232 #define RX_DSCP_PRI_MAP1 0x34 /* Rx DSCP Priority to Rx Packet Mapping */
233 #define RX_DSCP_PRI_MAP2 0x38 /* Rx DSCP Priority to Rx Packet Mapping */
234 #define RX_DSCP_PRI_MAP3 0x3c /* Rx DSCP Priority to Rx Packet Mapping */
235 #define RX_DSCP_PRI_MAP4 0x40 /* Rx DSCP Priority to Rx Packet Mapping */
236 #define RX_DSCP_PRI_MAP5 0x44 /* Rx DSCP Priority to Rx Packet Mapping */
237 #define RX_DSCP_PRI_MAP6 0x48 /* Rx DSCP Priority to Rx Packet Mapping */
238 #define RX_DSCP_PRI_MAP7 0x4c /* Rx DSCP Priority to Rx Packet Mapping */
240 /* Bit definitions for the CPSW2_CONTROL register */
241 #define PASS_PRI_TAGGED (1<<24) /* Pass Priority Tagged */
242 #define VLAN_LTYPE2_EN (1<<21) /* VLAN LTYPE 2 enable */
243 #define VLAN_LTYPE1_EN (1<<20) /* VLAN LTYPE 1 enable */
244 #define DSCP_PRI_EN (1<<16) /* DSCP Priority Enable */
245 #define TS_320 (1<<14) /* Time Sync Dest Port 320 enable */
246 #define TS_319 (1<<13) /* Time Sync Dest Port 319 enable */
247 #define TS_132 (1<<12) /* Time Sync Dest IP Addr 132 enable */
248 #define TS_131 (1<<11) /* Time Sync Dest IP Addr 131 enable */
249 #define TS_130 (1<<10) /* Time Sync Dest IP Addr 130 enable */
250 #define TS_129 (1<<9) /* Time Sync Dest IP Addr 129 enable */
251 #define TS_TTL_NONZERO (1<<8) /* Time Sync Time To Live Non-zero enable */
252 #define TS_ANNEX_F_EN (1<<6) /* Time Sync Annex F enable */
253 #define TS_ANNEX_D_EN (1<<4) /* Time Sync Annex D enable */
254 #define TS_LTYPE2_EN (1<<3) /* Time Sync LTYPE 2 enable */
255 #define TS_LTYPE1_EN (1<<2) /* Time Sync LTYPE 1 enable */
256 #define TS_TX_EN (1<<1) /* Time Sync Transmit Enable */
257 #define TS_RX_EN (1<<0) /* Time Sync Receive Enable */
259 #define CTRL_V2_TS_BITS \
260 (TS_320 | TS_319 | TS_132 | TS_131 | TS_130 | TS_129 |\
261 TS_TTL_NONZERO | TS_ANNEX_D_EN | TS_LTYPE1_EN)
263 #define CTRL_V2_ALL_TS_MASK (CTRL_V2_TS_BITS | TS_TX_EN | TS_RX_EN)
264 #define CTRL_V2_TX_TS_BITS (CTRL_V2_TS_BITS | TS_TX_EN)
265 #define CTRL_V2_RX_TS_BITS (CTRL_V2_TS_BITS | TS_RX_EN)
268 #define CTRL_V3_TS_BITS \
269 (TS_320 | TS_319 | TS_132 | TS_131 | TS_130 | TS_129 |\
270 TS_TTL_NONZERO | TS_ANNEX_F_EN | TS_ANNEX_D_EN |\
273 #define CTRL_V3_ALL_TS_MASK (CTRL_V3_TS_BITS | TS_TX_EN | TS_RX_EN)
274 #define CTRL_V3_TX_TS_BITS (CTRL_V3_TS_BITS | TS_TX_EN)
275 #define CTRL_V3_RX_TS_BITS (CTRL_V3_TS_BITS | TS_RX_EN)
277 /* Bit definitions for the CPSW2_TS_SEQ_MTYPE register */
278 #define TS_SEQ_ID_OFFSET_SHIFT (16) /* Time Sync Sequence ID Offset */
279 #define TS_SEQ_ID_OFFSET_MASK (0x3f)
280 #define TS_MSG_TYPE_EN_SHIFT (0) /* Time Sync Message Type Enable */
281 #define TS_MSG_TYPE_EN_MASK (0xffff)
283 /* The PTP event messages - Sync, Delay_Req, Pdelay_Req, and Pdelay_Resp. */
284 #define EVENT_MSG_BITS ((1<<0) | (1<<1) | (1<<2) | (1<<3))
286 /* Bit definitions for the CPSW1_TS_CTL register */
287 #define CPSW_V1_TS_RX_EN BIT(0)
288 #define CPSW_V1_TS_TX_EN BIT(4)
289 #define CPSW_V1_MSG_TYPE_OFS 16
291 /* Bit definitions for the CPSW1_TS_SEQ_LTYPE register */
292 #define CPSW_V1_SEQ_ID_OFS_SHIFT 16
294 struct cpsw_host_regs {
300 u32 cpdma_tx_pri_map;
301 u32 cpdma_rx_chan_map;
304 struct cpsw_sliver_regs {
317 struct cpsw_hw_stats {
319 u32 rxbroadcastframes;
320 u32 rxmulticastframes;
323 u32 rxaligncodeerrors;
324 u32 rxoversizedframes;
326 u32 rxundersizedframes;
331 u32 txbroadcastframes;
332 u32 txmulticastframes;
334 u32 txdeferredframes;
335 u32 txcollisionframes;
336 u32 txsinglecollframes;
337 u32 txmultcollframes;
338 u32 txexcessivecollisions;
339 u32 txlatecollisions;
341 u32 txcarriersenseerrors;
344 u32 octetframes65t127;
345 u32 octetframes128t255;
346 u32 octetframes256t511;
347 u32 octetframes512t1023;
348 u32 octetframes1024tup;
357 struct cpsw_sliver_regs __iomem *sliver;
360 struct cpsw_slave_data *data;
361 struct phy_device *phy;
362 struct net_device *ndev;
367 static inline u32 slave_read(struct cpsw_slave *slave, u32 offset)
369 return __raw_readl(slave->regs + offset);
372 static inline void slave_write(struct cpsw_slave *slave, u32 val, u32 offset)
374 __raw_writel(val, slave->regs + offset);
379 struct platform_device *pdev;
380 struct net_device *ndev;
381 struct napi_struct napi;
383 struct cpsw_platform_data data;
384 struct cpsw_ss_regs __iomem *regs;
385 struct cpsw_wr_regs __iomem *wr_regs;
386 u8 __iomem *hw_stats;
387 struct cpsw_host_regs __iomem *host_port_regs;
395 u8 mac_addr[ETH_ALEN];
396 struct cpsw_slave *slaves;
397 struct cpdma_ctlr *dma;
398 struct cpdma_chan *txch, *rxch;
399 struct cpsw_ale *ale;
400 /* snapshot of IRQ numbers */
409 char stat_string[ETH_GSTRING_LEN];
421 #define CPSW_STAT(m) CPSW_STATS, \
422 sizeof(((struct cpsw_hw_stats *)0)->m), \
423 offsetof(struct cpsw_hw_stats, m)
424 #define CPDMA_RX_STAT(m) CPDMA_RX_STATS, \
425 sizeof(((struct cpdma_chan_stats *)0)->m), \
426 offsetof(struct cpdma_chan_stats, m)
427 #define CPDMA_TX_STAT(m) CPDMA_TX_STATS, \
428 sizeof(((struct cpdma_chan_stats *)0)->m), \
429 offsetof(struct cpdma_chan_stats, m)
431 static const struct cpsw_stats cpsw_gstrings_stats[] = {
432 { "Good Rx Frames", CPSW_STAT(rxgoodframes) },
433 { "Broadcast Rx Frames", CPSW_STAT(rxbroadcastframes) },
434 { "Multicast Rx Frames", CPSW_STAT(rxmulticastframes) },
435 { "Pause Rx Frames", CPSW_STAT(rxpauseframes) },
436 { "Rx CRC Errors", CPSW_STAT(rxcrcerrors) },
437 { "Rx Align/Code Errors", CPSW_STAT(rxaligncodeerrors) },
438 { "Oversize Rx Frames", CPSW_STAT(rxoversizedframes) },
439 { "Rx Jabbers", CPSW_STAT(rxjabberframes) },
440 { "Undersize (Short) Rx Frames", CPSW_STAT(rxundersizedframes) },
441 { "Rx Fragments", CPSW_STAT(rxfragments) },
442 { "Rx Octets", CPSW_STAT(rxoctets) },
443 { "Good Tx Frames", CPSW_STAT(txgoodframes) },
444 { "Broadcast Tx Frames", CPSW_STAT(txbroadcastframes) },
445 { "Multicast Tx Frames", CPSW_STAT(txmulticastframes) },
446 { "Pause Tx Frames", CPSW_STAT(txpauseframes) },
447 { "Deferred Tx Frames", CPSW_STAT(txdeferredframes) },
448 { "Collisions", CPSW_STAT(txcollisionframes) },
449 { "Single Collision Tx Frames", CPSW_STAT(txsinglecollframes) },
450 { "Multiple Collision Tx Frames", CPSW_STAT(txmultcollframes) },
451 { "Excessive Collisions", CPSW_STAT(txexcessivecollisions) },
452 { "Late Collisions", CPSW_STAT(txlatecollisions) },
453 { "Tx Underrun", CPSW_STAT(txunderrun) },
454 { "Carrier Sense Errors", CPSW_STAT(txcarriersenseerrors) },
455 { "Tx Octets", CPSW_STAT(txoctets) },
456 { "Rx + Tx 64 Octet Frames", CPSW_STAT(octetframes64) },
457 { "Rx + Tx 65-127 Octet Frames", CPSW_STAT(octetframes65t127) },
458 { "Rx + Tx 128-255 Octet Frames", CPSW_STAT(octetframes128t255) },
459 { "Rx + Tx 256-511 Octet Frames", CPSW_STAT(octetframes256t511) },
460 { "Rx + Tx 512-1023 Octet Frames", CPSW_STAT(octetframes512t1023) },
461 { "Rx + Tx 1024-Up Octet Frames", CPSW_STAT(octetframes1024tup) },
462 { "Net Octets", CPSW_STAT(netoctets) },
463 { "Rx Start of Frame Overruns", CPSW_STAT(rxsofoverruns) },
464 { "Rx Middle of Frame Overruns", CPSW_STAT(rxmofoverruns) },
465 { "Rx DMA Overruns", CPSW_STAT(rxdmaoverruns) },
466 { "Rx DMA chan: head_enqueue", CPDMA_RX_STAT(head_enqueue) },
467 { "Rx DMA chan: tail_enqueue", CPDMA_RX_STAT(tail_enqueue) },
468 { "Rx DMA chan: pad_enqueue", CPDMA_RX_STAT(pad_enqueue) },
469 { "Rx DMA chan: misqueued", CPDMA_RX_STAT(misqueued) },
470 { "Rx DMA chan: desc_alloc_fail", CPDMA_RX_STAT(desc_alloc_fail) },
471 { "Rx DMA chan: pad_alloc_fail", CPDMA_RX_STAT(pad_alloc_fail) },
472 { "Rx DMA chan: runt_receive_buf", CPDMA_RX_STAT(runt_receive_buff) },
473 { "Rx DMA chan: runt_transmit_buf", CPDMA_RX_STAT(runt_transmit_buff) },
474 { "Rx DMA chan: empty_dequeue", CPDMA_RX_STAT(empty_dequeue) },
475 { "Rx DMA chan: busy_dequeue", CPDMA_RX_STAT(busy_dequeue) },
476 { "Rx DMA chan: good_dequeue", CPDMA_RX_STAT(good_dequeue) },
477 { "Rx DMA chan: requeue", CPDMA_RX_STAT(requeue) },
478 { "Rx DMA chan: teardown_dequeue", CPDMA_RX_STAT(teardown_dequeue) },
479 { "Tx DMA chan: head_enqueue", CPDMA_TX_STAT(head_enqueue) },
480 { "Tx DMA chan: tail_enqueue", CPDMA_TX_STAT(tail_enqueue) },
481 { "Tx DMA chan: pad_enqueue", CPDMA_TX_STAT(pad_enqueue) },
482 { "Tx DMA chan: misqueued", CPDMA_TX_STAT(misqueued) },
483 { "Tx DMA chan: desc_alloc_fail", CPDMA_TX_STAT(desc_alloc_fail) },
484 { "Tx DMA chan: pad_alloc_fail", CPDMA_TX_STAT(pad_alloc_fail) },
485 { "Tx DMA chan: runt_receive_buf", CPDMA_TX_STAT(runt_receive_buff) },
486 { "Tx DMA chan: runt_transmit_buf", CPDMA_TX_STAT(runt_transmit_buff) },
487 { "Tx DMA chan: empty_dequeue", CPDMA_TX_STAT(empty_dequeue) },
488 { "Tx DMA chan: busy_dequeue", CPDMA_TX_STAT(busy_dequeue) },
489 { "Tx DMA chan: good_dequeue", CPDMA_TX_STAT(good_dequeue) },
490 { "Tx DMA chan: requeue", CPDMA_TX_STAT(requeue) },
491 { "Tx DMA chan: teardown_dequeue", CPDMA_TX_STAT(teardown_dequeue) },
494 #define CPSW_STATS_LEN ARRAY_SIZE(cpsw_gstrings_stats)
496 #define napi_to_priv(napi) container_of(napi, struct cpsw_priv, napi)
497 #define for_each_slave(priv, func, arg...) \
499 struct cpsw_slave *slave; \
501 if (priv->data.dual_emac) \
502 (func)((priv)->slaves + priv->emac_port, ##arg);\
504 for (n = (priv)->data.slaves, \
505 slave = (priv)->slaves; \
507 (func)(slave++, ##arg); \
509 #define cpsw_get_slave_ndev(priv, __slave_no__) \
510 (priv->slaves[__slave_no__].ndev)
511 #define cpsw_get_slave_priv(priv, __slave_no__) \
512 ((priv->slaves[__slave_no__].ndev) ? \
513 netdev_priv(priv->slaves[__slave_no__].ndev) : NULL) \
515 #define cpsw_dual_emac_src_port_detect(status, priv, ndev, skb) \
517 if (!priv->data.dual_emac) \
519 if (CPDMA_RX_SOURCE_PORT(status) == 1) { \
520 ndev = cpsw_get_slave_ndev(priv, 0); \
521 priv = netdev_priv(ndev); \
523 } else if (CPDMA_RX_SOURCE_PORT(status) == 2) { \
524 ndev = cpsw_get_slave_ndev(priv, 1); \
525 priv = netdev_priv(ndev); \
529 #define cpsw_add_mcast(priv, addr) \
531 if (priv->data.dual_emac) { \
532 struct cpsw_slave *slave = priv->slaves + \
534 int slave_port = cpsw_get_slave_port(priv, \
536 cpsw_ale_add_mcast(priv->ale, addr, \
537 1 << slave_port | 1 << priv->host_port, \
538 ALE_VLAN, slave->port_vlan, 0); \
540 cpsw_ale_add_mcast(priv->ale, addr, \
541 ALE_ALL_PORTS << priv->host_port, \
546 static inline int cpsw_get_slave_port(struct cpsw_priv *priv, u32 slave_num)
548 if (priv->host_port == 0)
549 return slave_num + 1;
554 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
556 struct cpsw_priv *priv = netdev_priv(ndev);
557 struct cpsw_ale *ale = priv->ale;
560 if (priv->data.dual_emac) {
563 /* Enabling promiscuous mode for one interface will be
564 * common for both the interface as the interface shares
565 * the same hardware resource.
567 for (i = 0; i < priv->data.slaves; i++)
568 if (priv->slaves[i].ndev->flags & IFF_PROMISC)
571 if (!enable && flag) {
573 dev_err(&ndev->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
578 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 1);
580 dev_dbg(&ndev->dev, "promiscuity enabled\n");
583 cpsw_ale_control_set(ale, 0, ALE_BYPASS, 0);
584 dev_dbg(&ndev->dev, "promiscuity disabled\n");
588 unsigned long timeout = jiffies + HZ;
590 /* Disable Learn for all ports */
591 for (i = 0; i < priv->data.slaves; i++) {
592 cpsw_ale_control_set(ale, i,
593 ALE_PORT_NOLEARN, 1);
594 cpsw_ale_control_set(ale, i,
595 ALE_PORT_NO_SA_UPDATE, 1);
598 /* Clear All Untouched entries */
599 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
602 if (cpsw_ale_control_get(ale, 0, ALE_AGEOUT))
604 } while (time_after(timeout, jiffies));
605 cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
607 /* Clear all mcast from ALE */
608 cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS <<
611 /* Flood All Unicast Packets to Host port */
612 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1);
613 dev_dbg(&ndev->dev, "promiscuity enabled\n");
615 /* Flood All Unicast Packets to Host port */
616 cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);
618 /* Enable Learn for all ports */
619 for (i = 0; i < priv->data.slaves; i++) {
620 cpsw_ale_control_set(ale, i,
621 ALE_PORT_NOLEARN, 0);
622 cpsw_ale_control_set(ale, i,
623 ALE_PORT_NO_SA_UPDATE, 0);
625 dev_dbg(&ndev->dev, "promiscuity disabled\n");
630 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
632 struct cpsw_priv *priv = netdev_priv(ndev);
634 if (ndev->flags & IFF_PROMISC) {
635 /* Enable promiscuous mode */
636 cpsw_set_promiscious(ndev, true);
639 /* Disable promiscuous mode */
640 cpsw_set_promiscious(ndev, false);
643 /* Clear all mcast from ALE */
644 cpsw_ale_flush_multicast(priv->ale, ALE_ALL_PORTS << priv->host_port);
646 if (!netdev_mc_empty(ndev)) {
647 struct netdev_hw_addr *ha;
649 /* program multicast address list into ALE register */
650 netdev_for_each_mc_addr(ha, ndev) {
651 cpsw_add_mcast(priv, (u8 *)ha->addr);
656 static void cpsw_intr_enable(struct cpsw_priv *priv)
658 __raw_writel(0xFF, &priv->wr_regs->tx_en);
659 __raw_writel(0xFF, &priv->wr_regs->rx_en);
661 cpdma_ctlr_int_ctrl(priv->dma, true);
665 static void cpsw_intr_disable(struct cpsw_priv *priv)
667 __raw_writel(0, &priv->wr_regs->tx_en);
668 __raw_writel(0, &priv->wr_regs->rx_en);
670 cpdma_ctlr_int_ctrl(priv->dma, false);
674 static void cpsw_tx_handler(void *token, int len, int status)
676 struct sk_buff *skb = token;
677 struct net_device *ndev = skb->dev;
678 struct cpsw_priv *priv = netdev_priv(ndev);
680 /* Check whether the queue is stopped due to stalled tx dma, if the
681 * queue is stopped then start the queue as we have free desc for tx
683 if (unlikely(netif_queue_stopped(ndev)))
684 netif_wake_queue(ndev);
685 cpts_tx_timestamp(priv->cpts, skb);
686 ndev->stats.tx_packets++;
687 ndev->stats.tx_bytes += len;
688 dev_kfree_skb_any(skb);
691 static void cpsw_rx_handler(void *token, int len, int status)
693 struct sk_buff *skb = token;
694 struct sk_buff *new_skb;
695 struct net_device *ndev = skb->dev;
696 struct cpsw_priv *priv = netdev_priv(ndev);
699 cpsw_dual_emac_src_port_detect(status, priv, ndev, skb);
701 if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
702 /* the interface is going down, skbs are purged */
703 dev_kfree_skb_any(skb);
707 new_skb = netdev_alloc_skb_ip_align(ndev, priv->rx_packet_max);
710 cpts_rx_timestamp(priv->cpts, skb);
711 skb->protocol = eth_type_trans(skb, ndev);
712 netif_receive_skb(skb);
713 ndev->stats.rx_bytes += len;
714 ndev->stats.rx_packets++;
716 ndev->stats.rx_dropped++;
720 ret = cpdma_chan_submit(priv->rxch, new_skb, new_skb->data,
721 skb_tailroom(new_skb), 0);
722 if (WARN_ON(ret < 0))
723 dev_kfree_skb_any(new_skb);
726 static irqreturn_t cpsw_interrupt(int irq, void *dev_id)
728 struct cpsw_priv *priv = dev_id;
730 cpsw_intr_disable(priv);
731 if (priv->irq_enabled == true) {
732 cpsw_disable_irq(priv);
733 priv->irq_enabled = false;
736 if (netif_running(priv->ndev)) {
737 napi_schedule(&priv->napi);
741 priv = cpsw_get_slave_priv(priv, 1);
745 if (netif_running(priv->ndev)) {
746 napi_schedule(&priv->napi);
752 static int cpsw_poll(struct napi_struct *napi, int budget)
754 struct cpsw_priv *priv = napi_to_priv(napi);
757 num_tx = cpdma_chan_process(priv->txch, 128);
759 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
761 num_rx = cpdma_chan_process(priv->rxch, budget);
762 if (num_rx < budget) {
763 struct cpsw_priv *prim_cpsw;
766 cpsw_intr_enable(priv);
767 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
768 prim_cpsw = cpsw_get_slave_priv(priv, 0);
769 if (prim_cpsw->irq_enabled == false) {
770 prim_cpsw->irq_enabled = true;
771 cpsw_enable_irq(priv);
775 if (num_rx || num_tx)
776 cpsw_dbg(priv, intr, "poll %d rx, %d tx pkts\n",
782 static inline void soft_reset(const char *module, void __iomem *reg)
784 unsigned long timeout = jiffies + HZ;
786 __raw_writel(1, reg);
789 } while ((__raw_readl(reg) & 1) && time_after(timeout, jiffies));
791 WARN(__raw_readl(reg) & 1, "failed to soft-reset %s\n", module);
794 #define mac_hi(mac) (((mac)[0] << 0) | ((mac)[1] << 8) | \
795 ((mac)[2] << 16) | ((mac)[3] << 24))
796 #define mac_lo(mac) (((mac)[4] << 0) | ((mac)[5] << 8))
798 static void cpsw_set_slave_mac(struct cpsw_slave *slave,
799 struct cpsw_priv *priv)
801 slave_write(slave, mac_hi(priv->mac_addr), SA_HI);
802 slave_write(slave, mac_lo(priv->mac_addr), SA_LO);
805 static void _cpsw_adjust_link(struct cpsw_slave *slave,
806 struct cpsw_priv *priv, bool *link)
808 struct phy_device *phy = slave->phy;
815 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
818 mac_control = priv->data.mac_control;
820 /* enable forwarding */
821 cpsw_ale_control_set(priv->ale, slave_port,
822 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
824 if (phy->speed == 1000)
825 mac_control |= BIT(7); /* GIGABITEN */
827 mac_control |= BIT(0); /* FULLDUPLEXEN */
829 /* set speed_in input in case RMII mode is used in 100Mbps */
830 if (phy->speed == 100)
831 mac_control |= BIT(15);
832 else if (phy->speed == 10)
833 mac_control |= BIT(18); /* In Band mode */
838 /* disable forwarding */
839 cpsw_ale_control_set(priv->ale, slave_port,
840 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
843 if (mac_control != slave->mac_control) {
844 phy_print_status(phy);
845 __raw_writel(mac_control, &slave->sliver->mac_control);
848 slave->mac_control = mac_control;
851 static void cpsw_adjust_link(struct net_device *ndev)
853 struct cpsw_priv *priv = netdev_priv(ndev);
856 for_each_slave(priv, _cpsw_adjust_link, priv, &link);
859 netif_carrier_on(ndev);
860 if (netif_running(ndev))
861 netif_wake_queue(ndev);
863 netif_carrier_off(ndev);
864 netif_stop_queue(ndev);
868 static int cpsw_get_coalesce(struct net_device *ndev,
869 struct ethtool_coalesce *coal)
871 struct cpsw_priv *priv = netdev_priv(ndev);
873 coal->rx_coalesce_usecs = priv->coal_intvl;
877 static int cpsw_set_coalesce(struct net_device *ndev,
878 struct ethtool_coalesce *coal)
880 struct cpsw_priv *priv = netdev_priv(ndev);
882 u32 num_interrupts = 0;
887 if (!coal->rx_coalesce_usecs)
890 coal_intvl = coal->rx_coalesce_usecs;
892 int_ctrl = readl(&priv->wr_regs->int_control);
893 prescale = priv->bus_freq_mhz * 4;
895 if (coal_intvl < CPSW_CMINTMIN_INTVL)
896 coal_intvl = CPSW_CMINTMIN_INTVL;
898 if (coal_intvl > CPSW_CMINTMAX_INTVL) {
899 /* Interrupt pacer works with 4us Pulse, we can
900 * throttle further by dilating the 4us pulse.
902 addnl_dvdr = CPSW_INTPRESCALE_MASK / prescale;
904 if (addnl_dvdr > 1) {
905 prescale *= addnl_dvdr;
906 if (coal_intvl > (CPSW_CMINTMAX_INTVL * addnl_dvdr))
907 coal_intvl = (CPSW_CMINTMAX_INTVL
911 coal_intvl = CPSW_CMINTMAX_INTVL;
915 num_interrupts = (1000 * addnl_dvdr) / coal_intvl;
916 writel(num_interrupts, &priv->wr_regs->rx_imax);
917 writel(num_interrupts, &priv->wr_regs->tx_imax);
919 int_ctrl |= CPSW_INTPACEEN;
920 int_ctrl &= (~CPSW_INTPRESCALE_MASK);
921 int_ctrl |= (prescale & CPSW_INTPRESCALE_MASK);
922 writel(int_ctrl, &priv->wr_regs->int_control);
924 cpsw_notice(priv, timer, "Set coalesce to %d usecs.\n", coal_intvl);
925 if (priv->data.dual_emac) {
928 for (i = 0; i < priv->data.slaves; i++) {
929 priv = netdev_priv(priv->slaves[i].ndev);
930 priv->coal_intvl = coal_intvl;
933 priv->coal_intvl = coal_intvl;
939 static int cpsw_get_sset_count(struct net_device *ndev, int sset)
943 return CPSW_STATS_LEN;
949 static void cpsw_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
956 for (i = 0; i < CPSW_STATS_LEN; i++) {
957 memcpy(p, cpsw_gstrings_stats[i].stat_string,
959 p += ETH_GSTRING_LEN;
965 static void cpsw_get_ethtool_stats(struct net_device *ndev,
966 struct ethtool_stats *stats, u64 *data)
968 struct cpsw_priv *priv = netdev_priv(ndev);
969 struct cpdma_chan_stats rx_stats;
970 struct cpdma_chan_stats tx_stats;
975 /* Collect Davinci CPDMA stats for Rx and Tx Channel */
976 cpdma_chan_get_stats(priv->rxch, &rx_stats);
977 cpdma_chan_get_stats(priv->txch, &tx_stats);
979 for (i = 0; i < CPSW_STATS_LEN; i++) {
980 switch (cpsw_gstrings_stats[i].type) {
982 val = readl(priv->hw_stats +
983 cpsw_gstrings_stats[i].stat_offset);
988 p = (u8 *)&rx_stats +
989 cpsw_gstrings_stats[i].stat_offset;
994 p = (u8 *)&tx_stats +
995 cpsw_gstrings_stats[i].stat_offset;
1002 static inline int __show_stat(char *buf, int maxlen, const char *name, u32 val)
1004 static char *leader = "........................................";
1009 return snprintf(buf, maxlen, "%s %s %10d\n", name,
1010 leader + strlen(name), val);
1013 static int cpsw_common_res_usage_state(struct cpsw_priv *priv)
1016 u32 usage_count = 0;
1018 if (!priv->data.dual_emac)
1021 for (i = 0; i < priv->data.slaves; i++)
1022 if (priv->slaves[i].open_stat)
1028 static inline int cpsw_tx_packet_submit(struct net_device *ndev,
1029 struct cpsw_priv *priv, struct sk_buff *skb)
1031 if (!priv->data.dual_emac)
1032 return cpdma_chan_submit(priv->txch, skb, skb->data,
1035 if (ndev == cpsw_get_slave_ndev(priv, 0))
1036 return cpdma_chan_submit(priv->txch, skb, skb->data,
1039 return cpdma_chan_submit(priv->txch, skb, skb->data,
1043 static inline void cpsw_add_dual_emac_def_ale_entries(
1044 struct cpsw_priv *priv, struct cpsw_slave *slave,
1047 u32 port_mask = 1 << slave_port | 1 << priv->host_port;
1049 if (priv->version == CPSW_VERSION_1)
1050 slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
1052 slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
1053 cpsw_ale_add_vlan(priv->ale, slave->port_vlan, port_mask,
1054 port_mask, port_mask, 0);
1055 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1056 port_mask, ALE_VLAN, slave->port_vlan, 0);
1057 cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1058 priv->host_port, ALE_VLAN, slave->port_vlan);
1061 static void soft_reset_slave(struct cpsw_slave *slave)
1065 snprintf(name, sizeof(name), "slave-%d", slave->slave_num);
1066 soft_reset(name, &slave->sliver->soft_reset);
1069 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
1073 soft_reset_slave(slave);
1075 /* setup priority mapping */
1076 __raw_writel(RX_PRIORITY_MAPPING, &slave->sliver->rx_pri_map);
1078 switch (priv->version) {
1079 case CPSW_VERSION_1:
1080 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
1082 case CPSW_VERSION_2:
1083 case CPSW_VERSION_3:
1084 case CPSW_VERSION_4:
1085 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
1089 /* setup max packet size, and mac address */
1090 __raw_writel(priv->rx_packet_max, &slave->sliver->rx_maxlen);
1091 cpsw_set_slave_mac(slave, priv);
1093 slave->mac_control = 0; /* no link yet */
1095 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1097 if (priv->data.dual_emac)
1098 cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
1100 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1101 1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
1103 slave->phy = phy_connect(priv->ndev, slave->data->phy_id,
1104 &cpsw_adjust_link, slave->data->phy_if);
1105 if (IS_ERR(slave->phy)) {
1106 dev_err(priv->dev, "phy %s not found on slave %d\n",
1107 slave->data->phy_id, slave->slave_num);
1110 dev_info(priv->dev, "phy found : id is : 0x%x\n",
1111 slave->phy->phy_id);
1112 phy_start(slave->phy);
1114 /* Configure GMII_SEL register */
1115 cpsw_phy_sel(&priv->pdev->dev, slave->phy->interface,
1120 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
1122 const int vlan = priv->data.default_vlan;
1123 const int port = priv->host_port;
1127 reg = (priv->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
1130 writel(vlan, &priv->host_port_regs->port_vlan);
1132 for (i = 0; i < priv->data.slaves; i++)
1133 slave_write(priv->slaves + i, vlan, reg);
1135 cpsw_ale_add_vlan(priv->ale, vlan, ALE_ALL_PORTS << port,
1136 ALE_ALL_PORTS << port, ALE_ALL_PORTS << port,
1137 (ALE_PORT_1 | ALE_PORT_2) << port);
1140 static void cpsw_init_host_port(struct cpsw_priv *priv)
1145 /* soft reset the controller and initialize ale */
1146 soft_reset("cpsw", &priv->regs->soft_reset);
1147 cpsw_ale_start(priv->ale);
1149 /* switch to vlan unaware mode */
1150 cpsw_ale_control_set(priv->ale, priv->host_port, ALE_VLAN_AWARE,
1151 CPSW_ALE_VLAN_AWARE);
1152 control_reg = readl(&priv->regs->control);
1153 control_reg |= CPSW_VLAN_AWARE;
1154 writel(control_reg, &priv->regs->control);
1155 fifo_mode = (priv->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
1156 CPSW_FIFO_NORMAL_MODE;
1157 writel(fifo_mode, &priv->host_port_regs->tx_in_ctl);
1159 /* setup host port priority mapping */
1160 __raw_writel(CPDMA_TX_PRIORITY_MAP,
1161 &priv->host_port_regs->cpdma_tx_pri_map);
1162 __raw_writel(0, &priv->host_port_regs->cpdma_rx_chan_map);
1164 cpsw_ale_control_set(priv->ale, priv->host_port,
1165 ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
1167 if (!priv->data.dual_emac) {
1168 cpsw_ale_add_ucast(priv->ale, priv->mac_addr, priv->host_port,
1170 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1171 1 << priv->host_port, 0, 0, ALE_MCAST_FWD_2);
1175 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_priv *priv)
1179 slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1183 phy_stop(slave->phy);
1184 phy_disconnect(slave->phy);
1186 cpsw_ale_control_set(priv->ale, slave_port,
1187 ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
1190 static int cpsw_ndo_open(struct net_device *ndev)
1192 struct cpsw_priv *priv = netdev_priv(ndev);
1193 struct cpsw_priv *prim_cpsw;
1197 if (!cpsw_common_res_usage_state(priv))
1198 cpsw_intr_disable(priv);
1199 netif_carrier_off(ndev);
1201 pm_runtime_get_sync(&priv->pdev->dev);
1203 reg = priv->version;
1205 dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
1206 CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
1207 CPSW_RTL_VERSION(reg));
1209 /* initialize host and slave ports */
1210 if (!cpsw_common_res_usage_state(priv))
1211 cpsw_init_host_port(priv);
1212 for_each_slave(priv, cpsw_slave_open, priv);
1214 /* Add default VLAN */
1215 if (!priv->data.dual_emac)
1216 cpsw_add_default_vlan(priv);
1218 cpsw_ale_add_vlan(priv->ale, priv->data.default_vlan,
1219 ALE_ALL_PORTS << priv->host_port,
1220 ALE_ALL_PORTS << priv->host_port, 0, 0);
1222 if (!cpsw_common_res_usage_state(priv)) {
1223 /* setup tx dma to fixed prio and zero offset */
1224 cpdma_control_set(priv->dma, CPDMA_TX_PRIO_FIXED, 1);
1225 cpdma_control_set(priv->dma, CPDMA_RX_BUFFER_OFFSET, 0);
1227 /* disable priority elevation */
1228 __raw_writel(0, &priv->regs->ptype);
1230 /* enable statistics collection only on all ports */
1231 __raw_writel(0x7, &priv->regs->stat_port_en);
1233 if (WARN_ON(!priv->data.rx_descs))
1234 priv->data.rx_descs = 128;
1236 for (i = 0; i < priv->data.rx_descs; i++) {
1237 struct sk_buff *skb;
1240 skb = __netdev_alloc_skb_ip_align(priv->ndev,
1241 priv->rx_packet_max, GFP_KERNEL);
1244 ret = cpdma_chan_submit(priv->rxch, skb, skb->data,
1245 skb_tailroom(skb), 0);
1251 /* continue even if we didn't manage to submit all
1254 cpsw_info(priv, ifup, "submitted %d rx descriptors\n", i);
1256 if (cpts_register(&priv->pdev->dev, priv->cpts,
1257 priv->data.cpts_clock_mult,
1258 priv->data.cpts_clock_shift))
1259 dev_err(priv->dev, "error registering cpts device\n");
1263 /* Enable Interrupt pacing if configured */
1264 if (priv->coal_intvl != 0) {
1265 struct ethtool_coalesce coal;
1267 coal.rx_coalesce_usecs = (priv->coal_intvl << 4);
1268 cpsw_set_coalesce(ndev, &coal);
1271 napi_enable(&priv->napi);
1272 cpdma_ctlr_start(priv->dma);
1273 cpsw_intr_enable(priv);
1274 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
1275 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
1277 prim_cpsw = cpsw_get_slave_priv(priv, 0);
1278 if (prim_cpsw->irq_enabled == false) {
1279 if ((priv == prim_cpsw) || !netif_running(prim_cpsw->ndev)) {
1280 prim_cpsw->irq_enabled = true;
1281 cpsw_enable_irq(prim_cpsw);
1285 if (priv->data.dual_emac)
1286 priv->slaves[priv->emac_port].open_stat = true;
1290 cpdma_ctlr_stop(priv->dma);
1291 for_each_slave(priv, cpsw_slave_stop, priv);
1292 pm_runtime_put_sync(&priv->pdev->dev);
1293 netif_carrier_off(priv->ndev);
1297 static int cpsw_ndo_stop(struct net_device *ndev)
1299 struct cpsw_priv *priv = netdev_priv(ndev);
1301 cpsw_info(priv, ifdown, "shutting down cpsw device\n");
1302 netif_stop_queue(priv->ndev);
1303 napi_disable(&priv->napi);
1304 netif_carrier_off(priv->ndev);
1306 if (cpsw_common_res_usage_state(priv) <= 1) {
1307 cpts_unregister(priv->cpts);
1308 cpsw_intr_disable(priv);
1309 cpdma_ctlr_int_ctrl(priv->dma, false);
1310 cpdma_ctlr_stop(priv->dma);
1311 cpsw_ale_stop(priv->ale);
1313 for_each_slave(priv, cpsw_slave_stop, priv);
1314 pm_runtime_put_sync(&priv->pdev->dev);
1315 if (priv->data.dual_emac)
1316 priv->slaves[priv->emac_port].open_stat = false;
1320 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
1321 struct net_device *ndev)
1323 struct cpsw_priv *priv = netdev_priv(ndev);
1326 ndev->trans_start = jiffies;
1328 if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
1329 cpsw_err(priv, tx_err, "packet pad failed\n");
1330 ndev->stats.tx_dropped++;
1331 return NETDEV_TX_OK;
1334 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
1335 priv->cpts->tx_enable)
1336 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
1338 skb_tx_timestamp(skb);
1340 ret = cpsw_tx_packet_submit(ndev, priv, skb);
1341 if (unlikely(ret != 0)) {
1342 cpsw_err(priv, tx_err, "desc submit failed\n");
1346 /* If there is no more tx desc left free then we need to
1347 * tell the kernel to stop sending us tx frames.
1349 if (unlikely(!cpdma_check_free_tx_desc(priv->txch)))
1350 netif_stop_queue(ndev);
1352 return NETDEV_TX_OK;
1354 ndev->stats.tx_dropped++;
1355 netif_stop_queue(ndev);
1356 return NETDEV_TX_BUSY;
1359 #ifdef CONFIG_TI_CPTS
1361 static void cpsw_hwtstamp_v1(struct cpsw_priv *priv)
1363 struct cpsw_slave *slave = &priv->slaves[priv->data.active_slave];
1366 if (!priv->cpts->tx_enable && !priv->cpts->rx_enable) {
1367 slave_write(slave, 0, CPSW1_TS_CTL);
1371 seq_id = (30 << CPSW_V1_SEQ_ID_OFS_SHIFT) | ETH_P_1588;
1372 ts_en = EVENT_MSG_BITS << CPSW_V1_MSG_TYPE_OFS;
1374 if (priv->cpts->tx_enable)
1375 ts_en |= CPSW_V1_TS_TX_EN;
1377 if (priv->cpts->rx_enable)
1378 ts_en |= CPSW_V1_TS_RX_EN;
1380 slave_write(slave, ts_en, CPSW1_TS_CTL);
1381 slave_write(slave, seq_id, CPSW1_TS_SEQ_LTYPE);
1384 static void cpsw_hwtstamp_v2(struct cpsw_priv *priv)
1386 struct cpsw_slave *slave;
1389 if (priv->data.dual_emac)
1390 slave = &priv->slaves[priv->emac_port];
1392 slave = &priv->slaves[priv->data.active_slave];
1394 ctrl = slave_read(slave, CPSW2_CONTROL);
1395 switch (priv->version) {
1396 case CPSW_VERSION_2:
1397 ctrl &= ~CTRL_V2_ALL_TS_MASK;
1399 if (priv->cpts->tx_enable)
1400 ctrl |= CTRL_V2_TX_TS_BITS;
1402 if (priv->cpts->rx_enable)
1403 ctrl |= CTRL_V2_RX_TS_BITS;
1405 case CPSW_VERSION_3:
1407 ctrl &= ~CTRL_V3_ALL_TS_MASK;
1409 if (priv->cpts->tx_enable)
1410 ctrl |= CTRL_V3_TX_TS_BITS;
1412 if (priv->cpts->rx_enable)
1413 ctrl |= CTRL_V3_RX_TS_BITS;
1417 mtype = (30 << TS_SEQ_ID_OFFSET_SHIFT) | EVENT_MSG_BITS;
1419 slave_write(slave, mtype, CPSW2_TS_SEQ_MTYPE);
1420 slave_write(slave, ctrl, CPSW2_CONTROL);
1421 __raw_writel(ETH_P_1588, &priv->regs->ts_ltype);
1424 static int cpsw_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
1426 struct cpsw_priv *priv = netdev_priv(dev);
1427 struct cpts *cpts = priv->cpts;
1428 struct hwtstamp_config cfg;
1430 if (priv->version != CPSW_VERSION_1 &&
1431 priv->version != CPSW_VERSION_2 &&
1432 priv->version != CPSW_VERSION_3)
1435 if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
1438 /* reserved for future extensions */
1442 if (cfg.tx_type != HWTSTAMP_TX_OFF && cfg.tx_type != HWTSTAMP_TX_ON)
1445 switch (cfg.rx_filter) {
1446 case HWTSTAMP_FILTER_NONE:
1447 cpts->rx_enable = 0;
1449 case HWTSTAMP_FILTER_ALL:
1450 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
1451 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
1452 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
1454 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
1455 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
1456 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
1457 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
1458 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
1459 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
1460 case HWTSTAMP_FILTER_PTP_V2_EVENT:
1461 case HWTSTAMP_FILTER_PTP_V2_SYNC:
1462 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
1463 cpts->rx_enable = 1;
1464 cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
1470 cpts->tx_enable = cfg.tx_type == HWTSTAMP_TX_ON;
1472 switch (priv->version) {
1473 case CPSW_VERSION_1:
1474 cpsw_hwtstamp_v1(priv);
1476 case CPSW_VERSION_2:
1477 case CPSW_VERSION_3:
1478 cpsw_hwtstamp_v2(priv);
1484 return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1487 static int cpsw_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
1489 struct cpsw_priv *priv = netdev_priv(dev);
1490 struct cpts *cpts = priv->cpts;
1491 struct hwtstamp_config cfg;
1493 if (priv->version != CPSW_VERSION_1 &&
1494 priv->version != CPSW_VERSION_2 &&
1495 priv->version != CPSW_VERSION_3)
1499 cfg.tx_type = cpts->tx_enable ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF;
1500 cfg.rx_filter = (cpts->rx_enable ?
1501 HWTSTAMP_FILTER_PTP_V2_EVENT : HWTSTAMP_FILTER_NONE);
1503 return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1506 #endif /*CONFIG_TI_CPTS*/
1508 static int cpsw_ndo_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
1510 struct cpsw_priv *priv = netdev_priv(dev);
1511 int slave_no = cpsw_slave_index(priv);
1513 if (!netif_running(dev))
1517 #ifdef CONFIG_TI_CPTS
1519 return cpsw_hwtstamp_set(dev, req);
1521 return cpsw_hwtstamp_get(dev, req);
1525 if (!priv->slaves[slave_no].phy)
1527 return phy_mii_ioctl(priv->slaves[slave_no].phy, req, cmd);
1530 static void cpsw_ndo_tx_timeout(struct net_device *ndev)
1532 struct cpsw_priv *priv = netdev_priv(ndev);
1534 cpsw_err(priv, tx_err, "transmit timeout, restarting dma\n");
1535 ndev->stats.tx_errors++;
1536 cpsw_intr_disable(priv);
1537 cpdma_ctlr_int_ctrl(priv->dma, false);
1538 cpdma_chan_stop(priv->txch);
1539 cpdma_chan_start(priv->txch);
1540 cpdma_ctlr_int_ctrl(priv->dma, true);
1541 cpsw_intr_enable(priv);
1542 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
1543 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
1547 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
1549 struct cpsw_priv *priv = netdev_priv(ndev);
1550 struct sockaddr *addr = (struct sockaddr *)p;
1554 if (!is_valid_ether_addr(addr->sa_data))
1555 return -EADDRNOTAVAIL;
1557 if (priv->data.dual_emac) {
1558 vid = priv->slaves[priv->emac_port].port_vlan;
1562 cpsw_ale_del_ucast(priv->ale, priv->mac_addr, priv->host_port,
1564 cpsw_ale_add_ucast(priv->ale, addr->sa_data, priv->host_port,
1567 memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
1568 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
1569 for_each_slave(priv, cpsw_set_slave_mac, priv);
1574 #ifdef CONFIG_NET_POLL_CONTROLLER
1575 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1577 struct cpsw_priv *priv = netdev_priv(ndev);
1579 cpsw_intr_disable(priv);
1580 cpdma_ctlr_int_ctrl(priv->dma, false);
1581 cpsw_interrupt(ndev->irq, priv);
1582 cpdma_ctlr_int_ctrl(priv->dma, true);
1583 cpsw_intr_enable(priv);
1584 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
1585 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
1590 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
1595 ret = cpsw_ale_add_vlan(priv->ale, vid,
1596 ALE_ALL_PORTS << priv->host_port,
1597 0, ALE_ALL_PORTS << priv->host_port,
1598 (ALE_PORT_1 | ALE_PORT_2) << priv->host_port);
1602 ret = cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1603 priv->host_port, ALE_VLAN, vid);
1607 ret = cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1608 ALE_ALL_PORTS << priv->host_port,
1611 goto clean_vlan_ucast;
1615 cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1616 priv->host_port, ALE_VLAN, vid);
1618 cpsw_ale_del_vlan(priv->ale, vid, 0);
1622 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1623 __be16 proto, u16 vid)
1625 struct cpsw_priv *priv = netdev_priv(ndev);
1627 if (vid == priv->data.default_vlan)
1630 dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1631 return cpsw_add_vlan_ale_entry(priv, vid);
1634 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1635 __be16 proto, u16 vid)
1637 struct cpsw_priv *priv = netdev_priv(ndev);
1640 if (vid == priv->data.default_vlan)
1643 dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1644 ret = cpsw_ale_del_vlan(priv->ale, vid, 0);
1648 ret = cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1649 priv->host_port, ALE_VLAN, vid);
1653 return cpsw_ale_del_mcast(priv->ale, priv->ndev->broadcast,
1657 static const struct net_device_ops cpsw_netdev_ops = {
1658 .ndo_open = cpsw_ndo_open,
1659 .ndo_stop = cpsw_ndo_stop,
1660 .ndo_start_xmit = cpsw_ndo_start_xmit,
1661 .ndo_set_mac_address = cpsw_ndo_set_mac_address,
1662 .ndo_do_ioctl = cpsw_ndo_ioctl,
1663 .ndo_validate_addr = eth_validate_addr,
1664 .ndo_change_mtu = eth_change_mtu,
1665 .ndo_tx_timeout = cpsw_ndo_tx_timeout,
1666 .ndo_set_rx_mode = cpsw_ndo_set_rx_mode,
1667 #ifdef CONFIG_NET_POLL_CONTROLLER
1668 .ndo_poll_controller = cpsw_ndo_poll_controller,
1670 .ndo_vlan_rx_add_vid = cpsw_ndo_vlan_rx_add_vid,
1671 .ndo_vlan_rx_kill_vid = cpsw_ndo_vlan_rx_kill_vid,
1674 static void cpsw_get_drvinfo(struct net_device *ndev,
1675 struct ethtool_drvinfo *info)
1677 struct cpsw_priv *priv = netdev_priv(ndev);
1679 strlcpy(info->driver, "TI CPSW Driver v1.0", sizeof(info->driver));
1680 strlcpy(info->version, "1.0", sizeof(info->version));
1681 strlcpy(info->bus_info, priv->pdev->name, sizeof(info->bus_info));
1684 static u32 cpsw_get_msglevel(struct net_device *ndev)
1686 struct cpsw_priv *priv = netdev_priv(ndev);
1687 return priv->msg_enable;
1690 static void cpsw_set_msglevel(struct net_device *ndev, u32 value)
1692 struct cpsw_priv *priv = netdev_priv(ndev);
1693 priv->msg_enable = value;
1696 static int cpsw_get_ts_info(struct net_device *ndev,
1697 struct ethtool_ts_info *info)
1699 #ifdef CONFIG_TI_CPTS
1700 struct cpsw_priv *priv = netdev_priv(ndev);
1702 info->so_timestamping =
1703 SOF_TIMESTAMPING_TX_HARDWARE |
1704 SOF_TIMESTAMPING_TX_SOFTWARE |
1705 SOF_TIMESTAMPING_RX_HARDWARE |
1706 SOF_TIMESTAMPING_RX_SOFTWARE |
1707 SOF_TIMESTAMPING_SOFTWARE |
1708 SOF_TIMESTAMPING_RAW_HARDWARE;
1709 info->phc_index = priv->cpts->phc_index;
1711 (1 << HWTSTAMP_TX_OFF) |
1712 (1 << HWTSTAMP_TX_ON);
1714 (1 << HWTSTAMP_FILTER_NONE) |
1715 (1 << HWTSTAMP_FILTER_PTP_V2_EVENT);
1717 info->so_timestamping =
1718 SOF_TIMESTAMPING_TX_SOFTWARE |
1719 SOF_TIMESTAMPING_RX_SOFTWARE |
1720 SOF_TIMESTAMPING_SOFTWARE;
1721 info->phc_index = -1;
1723 info->rx_filters = 0;
1728 static int cpsw_get_settings(struct net_device *ndev,
1729 struct ethtool_cmd *ecmd)
1731 struct cpsw_priv *priv = netdev_priv(ndev);
1732 int slave_no = cpsw_slave_index(priv);
1734 if (priv->slaves[slave_no].phy)
1735 return phy_ethtool_gset(priv->slaves[slave_no].phy, ecmd);
1740 static int cpsw_set_settings(struct net_device *ndev, struct ethtool_cmd *ecmd)
1742 struct cpsw_priv *priv = netdev_priv(ndev);
1743 int slave_no = cpsw_slave_index(priv);
1745 if (priv->slaves[slave_no].phy)
1746 return phy_ethtool_sset(priv->slaves[slave_no].phy, ecmd);
1751 static void cpsw_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1753 struct cpsw_priv *priv = netdev_priv(ndev);
1754 int slave_no = cpsw_slave_index(priv);
1759 if (priv->slaves[slave_no].phy)
1760 phy_ethtool_get_wol(priv->slaves[slave_no].phy, wol);
1763 static int cpsw_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1765 struct cpsw_priv *priv = netdev_priv(ndev);
1766 int slave_no = cpsw_slave_index(priv);
1768 if (priv->slaves[slave_no].phy)
1769 return phy_ethtool_set_wol(priv->slaves[slave_no].phy, wol);
1774 static const struct ethtool_ops cpsw_ethtool_ops = {
1775 .get_drvinfo = cpsw_get_drvinfo,
1776 .get_msglevel = cpsw_get_msglevel,
1777 .set_msglevel = cpsw_set_msglevel,
1778 .get_link = ethtool_op_get_link,
1779 .get_ts_info = cpsw_get_ts_info,
1780 .get_settings = cpsw_get_settings,
1781 .set_settings = cpsw_set_settings,
1782 .get_coalesce = cpsw_get_coalesce,
1783 .set_coalesce = cpsw_set_coalesce,
1784 .get_sset_count = cpsw_get_sset_count,
1785 .get_strings = cpsw_get_strings,
1786 .get_ethtool_stats = cpsw_get_ethtool_stats,
1787 .get_wol = cpsw_get_wol,
1788 .set_wol = cpsw_set_wol,
1791 static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv,
1792 u32 slave_reg_ofs, u32 sliver_reg_ofs)
1794 void __iomem *regs = priv->regs;
1795 int slave_num = slave->slave_num;
1796 struct cpsw_slave_data *data = priv->data.slave_data + slave_num;
1799 slave->regs = regs + slave_reg_ofs;
1800 slave->sliver = regs + sliver_reg_ofs;
1801 slave->port_vlan = data->dual_emac_res_vlan;
1804 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1805 struct platform_device *pdev)
1807 struct device_node *node = pdev->dev.of_node;
1808 struct device_node *slave_node;
1815 if (of_property_read_u32(node, "slaves", &prop)) {
1816 dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1819 data->slaves = prop;
1821 if (of_property_read_u32(node, "active_slave", &prop)) {
1822 dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1825 data->active_slave = prop;
1827 if (of_property_read_u32(node, "cpts_clock_mult", &prop)) {
1828 dev_err(&pdev->dev, "Missing cpts_clock_mult property in the DT.\n");
1831 data->cpts_clock_mult = prop;
1833 if (of_property_read_u32(node, "cpts_clock_shift", &prop)) {
1834 dev_err(&pdev->dev, "Missing cpts_clock_shift property in the DT.\n");
1837 data->cpts_clock_shift = prop;
1839 data->slave_data = devm_kzalloc(&pdev->dev, data->slaves
1840 * sizeof(struct cpsw_slave_data),
1842 if (!data->slave_data)
1845 if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1846 dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1849 data->channels = prop;
1851 if (of_property_read_u32(node, "ale_entries", &prop)) {
1852 dev_err(&pdev->dev, "Missing ale_entries property in the DT.\n");
1855 data->ale_entries = prop;
1857 if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1858 dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");
1861 data->bd_ram_size = prop;
1863 if (of_property_read_u32(node, "rx_descs", &prop)) {
1864 dev_err(&pdev->dev, "Missing rx_descs property in the DT.\n");
1867 data->rx_descs = prop;
1869 if (of_property_read_u32(node, "mac_control", &prop)) {
1870 dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
1873 data->mac_control = prop;
1875 if (of_property_read_bool(node, "dual_emac"))
1876 data->dual_emac = 1;
1879 * Populate all the child nodes here...
1881 ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
1882 /* We do not want to force this, as in some cases may not have child */
1884 dev_warn(&pdev->dev, "Doesn't have any child node\n");
1886 for_each_child_of_node(node, slave_node) {
1887 struct cpsw_slave_data *slave_data = data->slave_data + i;
1888 const void *mac_addr = NULL;
1892 struct device_node *mdio_node;
1893 struct platform_device *mdio;
1895 /* This is no slave child node, continue */
1896 if (strcmp(slave_node->name, "slave"))
1899 parp = of_get_property(slave_node, "phy_id", &lenp);
1900 if ((parp == NULL) || (lenp != (sizeof(void *) * 2))) {
1901 dev_err(&pdev->dev, "Missing slave[%d] phy_id property\n", i);
1904 mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
1905 phyid = be32_to_cpup(parp+1);
1906 mdio = of_find_device_by_node(mdio_node);
1907 of_node_put(mdio_node);
1909 pr_err("Missing mdio platform device\n");
1912 snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
1913 PHY_ID_FMT, mdio->name, phyid);
1915 mac_addr = of_get_mac_address(slave_node);
1917 memcpy(slave_data->mac_addr, mac_addr, ETH_ALEN);
1919 slave_data->phy_if = of_get_phy_mode(slave_node);
1920 if (slave_data->phy_if < 0) {
1921 dev_err(&pdev->dev, "Missing or malformed slave[%d] phy-mode property\n",
1923 return slave_data->phy_if;
1926 if (data->dual_emac) {
1927 if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
1929 dev_err(&pdev->dev, "Missing dual_emac_res_vlan in DT.\n");
1930 slave_data->dual_emac_res_vlan = i+1;
1931 dev_err(&pdev->dev, "Using %d as Reserved VLAN for %d slave\n",
1932 slave_data->dual_emac_res_vlan, i);
1934 slave_data->dual_emac_res_vlan = prop;
1939 if (i == data->slaves)
1946 static int cpsw_probe_dual_emac(struct platform_device *pdev,
1947 struct cpsw_priv *priv)
1949 struct cpsw_platform_data *data = &priv->data;
1950 struct net_device *ndev;
1951 struct cpsw_priv *priv_sl2;
1954 ndev = alloc_etherdev(sizeof(struct cpsw_priv));
1956 dev_err(&pdev->dev, "cpsw: error allocating net_device\n");
1960 priv_sl2 = netdev_priv(ndev);
1961 spin_lock_init(&priv_sl2->lock);
1962 priv_sl2->data = *data;
1963 priv_sl2->pdev = pdev;
1964 priv_sl2->ndev = ndev;
1965 priv_sl2->dev = &ndev->dev;
1966 priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1967 priv_sl2->rx_packet_max = max(rx_packet_max, 128);
1969 if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
1970 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
1972 dev_info(&pdev->dev, "cpsw: Detected MACID = %pM\n", priv_sl2->mac_addr);
1974 random_ether_addr(priv_sl2->mac_addr);
1975 dev_info(&pdev->dev, "cpsw: Random MACID = %pM\n", priv_sl2->mac_addr);
1977 memcpy(ndev->dev_addr, priv_sl2->mac_addr, ETH_ALEN);
1979 priv_sl2->slaves = priv->slaves;
1980 priv_sl2->clk = priv->clk;
1982 priv_sl2->coal_intvl = 0;
1983 priv_sl2->bus_freq_mhz = priv->bus_freq_mhz;
1985 priv_sl2->regs = priv->regs;
1986 priv_sl2->host_port = priv->host_port;
1987 priv_sl2->host_port_regs = priv->host_port_regs;
1988 priv_sl2->wr_regs = priv->wr_regs;
1989 priv_sl2->hw_stats = priv->hw_stats;
1990 priv_sl2->dma = priv->dma;
1991 priv_sl2->txch = priv->txch;
1992 priv_sl2->rxch = priv->rxch;
1993 priv_sl2->ale = priv->ale;
1994 priv_sl2->emac_port = 1;
1995 priv->slaves[1].ndev = ndev;
1996 priv_sl2->cpts = priv->cpts;
1997 priv_sl2->version = priv->version;
1999 for (i = 0; i < priv->num_irqs; i++) {
2000 priv_sl2->irqs_table[i] = priv->irqs_table[i];
2001 priv_sl2->num_irqs = priv->num_irqs;
2003 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2005 ndev->netdev_ops = &cpsw_netdev_ops;
2006 ndev->ethtool_ops = &cpsw_ethtool_ops;
2007 netif_napi_add(ndev, &priv_sl2->napi, cpsw_poll, CPSW_POLL_WEIGHT);
2009 /* register the network device */
2010 SET_NETDEV_DEV(ndev, &pdev->dev);
2011 ret = register_netdev(ndev);
2013 dev_err(&pdev->dev, "cpsw: error registering net device\n");
2021 static int cpsw_probe(struct platform_device *pdev)
2023 struct cpsw_platform_data *data;
2024 struct net_device *ndev;
2025 struct cpsw_priv *priv;
2026 struct cpdma_params dma_params;
2027 struct cpsw_ale_params ale_params;
2028 void __iomem *ss_regs;
2029 struct resource *res, *ss_res;
2030 u32 slave_offset, sliver_offset, slave_size;
2031 int ret = 0, i, k = 0;
2033 ndev = alloc_etherdev(sizeof(struct cpsw_priv));
2035 dev_err(&pdev->dev, "error allocating net_device\n");
2039 platform_set_drvdata(pdev, ndev);
2040 priv = netdev_priv(ndev);
2041 spin_lock_init(&priv->lock);
2044 priv->dev = &ndev->dev;
2045 priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
2046 priv->rx_packet_max = max(rx_packet_max, 128);
2047 priv->cpts = devm_kzalloc(&pdev->dev, sizeof(struct cpts), GFP_KERNEL);
2048 priv->irq_enabled = true;
2050 dev_err(&pdev->dev, "error allocating cpts\n");
2051 goto clean_ndev_ret;
2055 * This may be required here for child devices.
2057 pm_runtime_enable(&pdev->dev);
2059 /* Select default pin state */
2060 pinctrl_pm_select_default_state(&pdev->dev);
2062 if (cpsw_probe_dt(&priv->data, pdev)) {
2063 dev_err(&pdev->dev, "cpsw: platform data missing\n");
2065 goto clean_runtime_disable_ret;
2069 if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
2070 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
2071 dev_info(&pdev->dev, "Detected MACID = %pM\n", priv->mac_addr);
2073 eth_random_addr(priv->mac_addr);
2074 dev_info(&pdev->dev, "Random MACID = %pM\n", priv->mac_addr);
2077 memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
2079 priv->slaves = devm_kzalloc(&pdev->dev,
2080 sizeof(struct cpsw_slave) * data->slaves,
2082 if (!priv->slaves) {
2084 goto clean_runtime_disable_ret;
2086 for (i = 0; i < data->slaves; i++)
2087 priv->slaves[i].slave_num = i;
2089 priv->slaves[0].ndev = ndev;
2090 priv->emac_port = 0;
2092 priv->clk = devm_clk_get(&pdev->dev, "fck");
2093 if (IS_ERR(priv->clk)) {
2094 dev_err(priv->dev, "fck is not found\n");
2096 goto clean_runtime_disable_ret;
2098 priv->coal_intvl = 0;
2099 priv->bus_freq_mhz = clk_get_rate(priv->clk) / 1000000;
2101 ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2102 ss_regs = devm_ioremap_resource(&pdev->dev, ss_res);
2103 if (IS_ERR(ss_regs)) {
2104 ret = PTR_ERR(ss_regs);
2105 goto clean_runtime_disable_ret;
2107 priv->regs = ss_regs;
2108 priv->host_port = HOST_PORT_NUM;
2110 /* Need to enable clocks with runtime PM api to access module
2113 pm_runtime_get_sync(&pdev->dev);
2114 priv->version = readl(&priv->regs->id_ver);
2115 pm_runtime_put_sync(&pdev->dev);
2117 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2118 priv->wr_regs = devm_ioremap_resource(&pdev->dev, res);
2119 if (IS_ERR(priv->wr_regs)) {
2120 ret = PTR_ERR(priv->wr_regs);
2121 goto clean_runtime_disable_ret;
2124 memset(&dma_params, 0, sizeof(dma_params));
2125 memset(&ale_params, 0, sizeof(ale_params));
2127 switch (priv->version) {
2128 case CPSW_VERSION_1:
2129 priv->host_port_regs = ss_regs + CPSW1_HOST_PORT_OFFSET;
2130 priv->cpts->reg = ss_regs + CPSW1_CPTS_OFFSET;
2131 priv->hw_stats = ss_regs + CPSW1_HW_STATS;
2132 dma_params.dmaregs = ss_regs + CPSW1_CPDMA_OFFSET;
2133 dma_params.txhdp = ss_regs + CPSW1_STATERAM_OFFSET;
2134 ale_params.ale_regs = ss_regs + CPSW1_ALE_OFFSET;
2135 slave_offset = CPSW1_SLAVE_OFFSET;
2136 slave_size = CPSW1_SLAVE_SIZE;
2137 sliver_offset = CPSW1_SLIVER_OFFSET;
2138 dma_params.desc_mem_phys = 0;
2140 case CPSW_VERSION_2:
2141 case CPSW_VERSION_3:
2142 case CPSW_VERSION_4:
2143 priv->host_port_regs = ss_regs + CPSW2_HOST_PORT_OFFSET;
2144 priv->cpts->reg = ss_regs + CPSW2_CPTS_OFFSET;
2145 priv->hw_stats = ss_regs + CPSW2_HW_STATS;
2146 dma_params.dmaregs = ss_regs + CPSW2_CPDMA_OFFSET;
2147 dma_params.txhdp = ss_regs + CPSW2_STATERAM_OFFSET;
2148 ale_params.ale_regs = ss_regs + CPSW2_ALE_OFFSET;
2149 slave_offset = CPSW2_SLAVE_OFFSET;
2150 slave_size = CPSW2_SLAVE_SIZE;
2151 sliver_offset = CPSW2_SLIVER_OFFSET;
2152 dma_params.desc_mem_phys =
2153 (u32 __force) ss_res->start + CPSW2_BD_OFFSET;
2156 dev_err(priv->dev, "unknown version 0x%08x\n", priv->version);
2158 goto clean_runtime_disable_ret;
2160 for (i = 0; i < priv->data.slaves; i++) {
2161 struct cpsw_slave *slave = &priv->slaves[i];
2162 cpsw_slave_init(slave, priv, slave_offset, sliver_offset);
2163 slave_offset += slave_size;
2164 sliver_offset += SLIVER_SIZE;
2167 dma_params.dev = &pdev->dev;
2168 dma_params.rxthresh = dma_params.dmaregs + CPDMA_RXTHRESH;
2169 dma_params.rxfree = dma_params.dmaregs + CPDMA_RXFREE;
2170 dma_params.rxhdp = dma_params.txhdp + CPDMA_RXHDP;
2171 dma_params.txcp = dma_params.txhdp + CPDMA_TXCP;
2172 dma_params.rxcp = dma_params.txhdp + CPDMA_RXCP;
2174 dma_params.num_chan = data->channels;
2175 dma_params.has_soft_reset = true;
2176 dma_params.min_packet_size = CPSW_MIN_PACKET_SIZE;
2177 dma_params.desc_mem_size = data->bd_ram_size;
2178 dma_params.desc_align = 16;
2179 dma_params.has_ext_regs = true;
2180 dma_params.desc_hw_addr = dma_params.desc_mem_phys;
2182 priv->dma = cpdma_ctlr_create(&dma_params);
2184 dev_err(priv->dev, "error initializing dma\n");
2186 goto clean_runtime_disable_ret;
2189 priv->txch = cpdma_chan_create(priv->dma, tx_chan_num(0),
2191 priv->rxch = cpdma_chan_create(priv->dma, rx_chan_num(0),
2194 if (WARN_ON(!priv->txch || !priv->rxch)) {
2195 dev_err(priv->dev, "error initializing dma channels\n");
2200 ale_params.dev = &ndev->dev;
2201 ale_params.ale_ageout = ale_ageout;
2202 ale_params.ale_entries = data->ale_entries;
2203 ale_params.ale_ports = data->slaves;
2205 priv->ale = cpsw_ale_create(&ale_params);
2207 dev_err(priv->dev, "error initializing ale engine\n");
2212 ndev->irq = platform_get_irq(pdev, 0);
2213 if (ndev->irq < 0) {
2214 dev_err(priv->dev, "error getting irq resource\n");
2219 while ((res = platform_get_resource(priv->pdev, IORESOURCE_IRQ, k))) {
2220 for (i = res->start; i <= res->end; i++) {
2221 if (devm_request_irq(&pdev->dev, i, cpsw_interrupt, 0,
2222 dev_name(&pdev->dev), priv)) {
2223 dev_err(priv->dev, "error attaching irq\n");
2226 priv->irqs_table[k] = i;
2227 priv->num_irqs = k + 1;
2232 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2234 ndev->netdev_ops = &cpsw_netdev_ops;
2235 ndev->ethtool_ops = &cpsw_ethtool_ops;
2236 netif_napi_add(ndev, &priv->napi, cpsw_poll, CPSW_POLL_WEIGHT);
2238 /* register the network device */
2239 SET_NETDEV_DEV(ndev, &pdev->dev);
2240 ret = register_netdev(ndev);
2242 dev_err(priv->dev, "error registering net device\n");
2247 cpsw_notice(priv, probe, "initialized device (regs %pa, irq %d)\n",
2248 &ss_res->start, ndev->irq);
2250 if (priv->data.dual_emac) {
2251 ret = cpsw_probe_dual_emac(pdev, priv);
2253 cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
2261 cpsw_ale_destroy(priv->ale);
2263 cpdma_chan_destroy(priv->txch);
2264 cpdma_chan_destroy(priv->rxch);
2265 cpdma_ctlr_destroy(priv->dma);
2266 clean_runtime_disable_ret:
2267 pm_runtime_disable(&pdev->dev);
2269 free_netdev(priv->ndev);
2273 static int cpsw_remove(struct platform_device *pdev)
2275 struct net_device *ndev = platform_get_drvdata(pdev);
2276 struct cpsw_priv *priv = netdev_priv(ndev);
2278 if (priv->data.dual_emac)
2279 unregister_netdev(cpsw_get_slave_ndev(priv, 1));
2280 unregister_netdev(ndev);
2282 cpsw_ale_destroy(priv->ale);
2283 cpdma_chan_destroy(priv->txch);
2284 cpdma_chan_destroy(priv->rxch);
2285 cpdma_ctlr_destroy(priv->dma);
2286 pm_runtime_disable(&pdev->dev);
2287 if (priv->data.dual_emac)
2288 free_netdev(cpsw_get_slave_ndev(priv, 1));
2293 static int cpsw_suspend(struct device *dev)
2295 struct platform_device *pdev = to_platform_device(dev);
2296 struct net_device *ndev = platform_get_drvdata(pdev);
2297 struct cpsw_priv *priv = netdev_priv(ndev);
2299 if (netif_running(ndev))
2300 cpsw_ndo_stop(ndev);
2302 for_each_slave(priv, soft_reset_slave);
2304 pm_runtime_put_sync(&pdev->dev);
2306 /* Select sleep pin state */
2307 pinctrl_pm_select_sleep_state(&pdev->dev);
2312 static int cpsw_resume(struct device *dev)
2314 struct platform_device *pdev = to_platform_device(dev);
2315 struct net_device *ndev = platform_get_drvdata(pdev);
2317 pm_runtime_get_sync(&pdev->dev);
2319 /* Select default pin state */
2320 pinctrl_pm_select_default_state(&pdev->dev);
2322 if (netif_running(ndev))
2323 cpsw_ndo_open(ndev);
2327 static const struct dev_pm_ops cpsw_pm_ops = {
2328 .suspend = cpsw_suspend,
2329 .resume = cpsw_resume,
2332 static const struct of_device_id cpsw_of_mtable[] = {
2333 { .compatible = "ti,cpsw", },
2336 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
2338 static struct platform_driver cpsw_driver = {
2341 .owner = THIS_MODULE,
2343 .of_match_table = cpsw_of_mtable,
2345 .probe = cpsw_probe,
2346 .remove = cpsw_remove,
2349 static int __init cpsw_init(void)
2351 return platform_driver_register(&cpsw_driver);
2353 late_initcall(cpsw_init);
2355 static void __exit cpsw_exit(void)
2357 platform_driver_unregister(&cpsw_driver);
2359 module_exit(cpsw_exit);
2361 MODULE_LICENSE("GPL");
2362 MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
2363 MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
2364 MODULE_DESCRIPTION("TI CPSW Ethernet driver");