Version:  2.0.40 2.2.26 2.4.37 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16

Linux/drivers/net/ethernet/ti/cpsw.c

  1 /*
  2  * Texas Instruments Ethernet Switch Driver
  3  *
  4  * Copyright (C) 2012 Texas Instruments
  5  *
  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.
  9  *
 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.
 14  */
 15 
 16 #include <linux/kernel.h>
 17 #include <linux/io.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/of.h>
 33 #include <linux/of_net.h>
 34 #include <linux/of_device.h>
 35 #include <linux/if_vlan.h>
 36 
 37 #include <linux/pinctrl/consumer.h>
 38 
 39 #include "cpsw.h"
 40 #include "cpsw_ale.h"
 41 #include "cpts.h"
 42 #include "davinci_cpdma.h"
 43 
 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   | \
 51                          NETIF_MSG_RX_STATUS)
 52 
 53 #define cpsw_info(priv, type, format, ...)              \
 54 do {                                                            \
 55         if (netif_msg_##type(priv) && net_ratelimit())          \
 56                 dev_info(priv->dev, format, ## __VA_ARGS__);    \
 57 } while (0)
 58 
 59 #define cpsw_err(priv, type, format, ...)               \
 60 do {                                                            \
 61         if (netif_msg_##type(priv) && net_ratelimit())          \
 62                 dev_err(priv->dev, format, ## __VA_ARGS__);     \
 63 } while (0)
 64 
 65 #define cpsw_dbg(priv, type, format, ...)               \
 66 do {                                                            \
 67         if (netif_msg_##type(priv) && net_ratelimit())          \
 68                 dev_dbg(priv->dev, format, ## __VA_ARGS__);     \
 69 } while (0)
 70 
 71 #define cpsw_notice(priv, type, format, ...)            \
 72 do {                                                            \
 73         if (netif_msg_##type(priv) && net_ratelimit())          \
 74                 dev_notice(priv->dev, format, ## __VA_ARGS__);  \
 75 } while (0)
 76 
 77 #define ALE_ALL_PORTS           0x7
 78 
 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)
 82 
 83 #define CPSW_VERSION_1          0x19010a
 84 #define CPSW_VERSION_2          0x19010c
 85 #define CPSW_VERSION_3          0x19010f
 86 #define CPSW_VERSION_4          0x190112
 87 
 88 #define HOST_PORT_NUM           0
 89 #define SLIVER_SIZE             0x40
 90 
 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
100 
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
111 
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
118 
119 #define CPSW_POLL_WEIGHT        64
120 #define CPSW_MIN_PACKET_SIZE    60
121 #define CPSW_MAX_PACKET_SIZE    (1500 + 14 + 4 + 4)
122 
123 #define RX_PRIORITY_MAPPING     0x76543210
124 #define TX_PRIORITY_MAPPING     0x33221100
125 #define CPDMA_TX_PRIORITY_MAP   0x76543210
126 
127 #define CPSW_VLAN_AWARE         BIT(1)
128 #define CPSW_ALE_VLAN_AWARE     1
129 
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)
133 
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)
140 
141 #define cpsw_enable_irq(priv)   \
142         do {                    \
143                 u32 i;          \
144                 for (i = 0; i < priv->num_irqs; i++) \
145                         enable_irq(priv->irqs_table[i]); \
146         } while (0)
147 #define cpsw_disable_irq(priv)  \
148         do {                    \
149                 u32 i;          \
150                 for (i = 0; i < priv->num_irqs; i++) \
151                         disable_irq_nosync(priv->irqs_table[i]); \
152         } while (0)
153 
154 #define cpsw_slave_index(priv)                          \
155                 ((priv->data.dual_emac) ? priv->emac_port :     \
156                 priv->data.active_slave)
157 
158 static int debug_level;
159 module_param(debug_level, int, 0);
160 MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)");
161 
162 static int ale_ageout = 10;
163 module_param(ale_ageout, int, 0);
164 MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)");
165 
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)");
169 
170 struct cpsw_wr_regs {
171         u32     id_ver;
172         u32     soft_reset;
173         u32     control;
174         u32     int_control;
175         u32     rx_thresh_en;
176         u32     rx_en;
177         u32     tx_en;
178         u32     misc_en;
179         u32     mem_allign1[8];
180         u32     rx_thresh_stat;
181         u32     rx_stat;
182         u32     tx_stat;
183         u32     misc_stat;
184         u32     mem_allign2[8];
185         u32     rx_imax;
186         u32     tx_imax;
187 
188 };
189 
190 struct cpsw_ss_regs {
191         u32     id_ver;
192         u32     control;
193         u32     soft_reset;
194         u32     stat_port_en;
195         u32     ptype;
196         u32     soft_idle;
197         u32     thru_rate;
198         u32     gap_thresh;
199         u32     tx_start_wds;
200         u32     flow_control;
201         u32     vlan_ltype;
202         u32     ts_ltype;
203         u32     dlr_ltype;
204 };
205 
206 /* CPSW_PORT_V1 */
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 */
215 
216 /* CPSW_PORT_V2 */
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 */
224 
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 */
229 
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 */
239 
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 */
258 
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)
262 
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)
266 
267 
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 |\
271          TS_LTYPE1_EN)
272 
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)
276 
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)
282 
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))
285 
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
290 
291 /* Bit definitions for the CPSW1_TS_SEQ_LTYPE register */
292 #define CPSW_V1_SEQ_ID_OFS_SHIFT        16
293 
294 struct cpsw_host_regs {
295         u32     max_blks;
296         u32     blk_cnt;
297         u32     tx_in_ctl;
298         u32     port_vlan;
299         u32     tx_pri_map;
300         u32     cpdma_tx_pri_map;
301         u32     cpdma_rx_chan_map;
302 };
303 
304 struct cpsw_sliver_regs {
305         u32     id_ver;
306         u32     mac_control;
307         u32     mac_status;
308         u32     soft_reset;
309         u32     rx_maxlen;
310         u32     __reserved_0;
311         u32     rx_pause;
312         u32     tx_pause;
313         u32     __reserved_1;
314         u32     rx_pri_map;
315 };
316 
317 struct cpsw_hw_stats {
318         u32     rxgoodframes;
319         u32     rxbroadcastframes;
320         u32     rxmulticastframes;
321         u32     rxpauseframes;
322         u32     rxcrcerrors;
323         u32     rxaligncodeerrors;
324         u32     rxoversizedframes;
325         u32     rxjabberframes;
326         u32     rxundersizedframes;
327         u32     rxfragments;
328         u32     __pad_0[2];
329         u32     rxoctets;
330         u32     txgoodframes;
331         u32     txbroadcastframes;
332         u32     txmulticastframes;
333         u32     txpauseframes;
334         u32     txdeferredframes;
335         u32     txcollisionframes;
336         u32     txsinglecollframes;
337         u32     txmultcollframes;
338         u32     txexcessivecollisions;
339         u32     txlatecollisions;
340         u32     txunderrun;
341         u32     txcarriersenseerrors;
342         u32     txoctets;
343         u32     octetframes64;
344         u32     octetframes65t127;
345         u32     octetframes128t255;
346         u32     octetframes256t511;
347         u32     octetframes512t1023;
348         u32     octetframes1024tup;
349         u32     netoctets;
350         u32     rxsofoverruns;
351         u32     rxmofoverruns;
352         u32     rxdmaoverruns;
353 };
354 
355 struct cpsw_slave {
356         void __iomem                    *regs;
357         struct cpsw_sliver_regs __iomem *sliver;
358         int                             slave_num;
359         u32                             mac_control;
360         struct cpsw_slave_data          *data;
361         struct phy_device               *phy;
362         struct net_device               *ndev;
363         u32                             port_vlan;
364         u32                             open_stat;
365 };
366 
367 static inline u32 slave_read(struct cpsw_slave *slave, u32 offset)
368 {
369         return __raw_readl(slave->regs + offset);
370 }
371 
372 static inline void slave_write(struct cpsw_slave *slave, u32 val, u32 offset)
373 {
374         __raw_writel(val, slave->regs + offset);
375 }
376 
377 struct cpsw_priv {
378         spinlock_t                      lock;
379         struct platform_device          *pdev;
380         struct net_device               *ndev;
381         struct napi_struct              napi;
382         struct device                   *dev;
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;
388         u32                             msg_enable;
389         u32                             version;
390         u32                             coal_intvl;
391         u32                             bus_freq_mhz;
392         int                             rx_packet_max;
393         int                             host_port;
394         struct clk                      *clk;
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 */
401         u32 irqs_table[4];
402         u32 num_irqs;
403         bool irq_enabled;
404         struct cpts *cpts;
405         u32 emac_port;
406 };
407 
408 struct cpsw_stats {
409         char stat_string[ETH_GSTRING_LEN];
410         int type;
411         int sizeof_stat;
412         int stat_offset;
413 };
414 
415 enum {
416         CPSW_STATS,
417         CPDMA_RX_STATS,
418         CPDMA_TX_STATS,
419 };
420 
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)
430 
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) },
492 };
493 
494 #define CPSW_STATS_LEN  ARRAY_SIZE(cpsw_gstrings_stats)
495 
496 #define napi_to_priv(napi)      container_of(napi, struct cpsw_priv, napi)
497 #define for_each_slave(priv, func, arg...)                              \
498         do {                                                            \
499                 struct cpsw_slave *slave;                               \
500                 int n;                                                  \
501                 if (priv->data.dual_emac)                               \
502                         (func)((priv)->slaves + priv->emac_port, ##arg);\
503                 else                                                    \
504                         for (n = (priv)->data.slaves,                   \
505                                         slave = (priv)->slaves;         \
506                                         n; n--)                         \
507                                 (func)(slave++, ##arg);                 \
508         } while (0)
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)    \
514 
515 #define cpsw_dual_emac_src_port_detect(status, priv, ndev, skb)         \
516         do {                                                            \
517                 if (!priv->data.dual_emac)                              \
518                         break;                                          \
519                 if (CPDMA_RX_SOURCE_PORT(status) == 1) {                \
520                         ndev = cpsw_get_slave_ndev(priv, 0);            \
521                         priv = netdev_priv(ndev);                       \
522                         skb->dev = ndev;                                \
523                 } else if (CPDMA_RX_SOURCE_PORT(status) == 2) {         \
524                         ndev = cpsw_get_slave_ndev(priv, 1);            \
525                         priv = netdev_priv(ndev);                       \
526                         skb->dev = ndev;                                \
527                 }                                                       \
528         } while (0)
529 #define cpsw_add_mcast(priv, addr)                                      \
530         do {                                                            \
531                 if (priv->data.dual_emac) {                             \
532                         struct cpsw_slave *slave = priv->slaves +       \
533                                                 priv->emac_port;        \
534                         int slave_port = cpsw_get_slave_port(priv,      \
535                                                 slave->slave_num);      \
536                         cpsw_ale_add_mcast(priv->ale, addr,             \
537                                 1 << slave_port | 1 << priv->host_port, \
538                                 ALE_VLAN, slave->port_vlan, 0);         \
539                 } else {                                                \
540                         cpsw_ale_add_mcast(priv->ale, addr,             \
541                                 ALE_ALL_PORTS << priv->host_port,       \
542                                 0, 0, 0);                               \
543                 }                                                       \
544         } while (0)
545 
546 static inline int cpsw_get_slave_port(struct cpsw_priv *priv, u32 slave_num)
547 {
548         if (priv->host_port == 0)
549                 return slave_num + 1;
550         else
551                 return slave_num;
552 }
553 
554 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
555 {
556         struct cpsw_priv *priv = netdev_priv(ndev);
557         struct cpsw_ale *ale = priv->ale;
558         int i;
559 
560         if (priv->data.dual_emac) {
561                 bool flag = false;
562 
563                 /* Enabling promiscuous mode for one interface will be
564                  * common for both the interface as the interface shares
565                  * the same hardware resource.
566                  */
567                 for (i = 0; i < priv->data.slaves; i++)
568                         if (priv->slaves[i].ndev->flags & IFF_PROMISC)
569                                 flag = true;
570 
571                 if (!enable && flag) {
572                         enable = true;
573                         dev_err(&ndev->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
574                 }
575 
576                 if (enable) {
577                         /* Enable Bypass */
578                         cpsw_ale_control_set(ale, 0, ALE_BYPASS, 1);
579 
580                         dev_dbg(&ndev->dev, "promiscuity enabled\n");
581                 } else {
582                         /* Disable Bypass */
583                         cpsw_ale_control_set(ale, 0, ALE_BYPASS, 0);
584                         dev_dbg(&ndev->dev, "promiscuity disabled\n");
585                 }
586         } else {
587                 if (enable) {
588                         unsigned long timeout = jiffies + HZ;
589 
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);
596                         }
597 
598                         /* Clear All Untouched entries */
599                         cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
600                         do {
601                                 cpu_relax();
602                                 if (cpsw_ale_control_get(ale, 0, ALE_AGEOUT))
603                                         break;
604                         } while (time_after(timeout, jiffies));
605                         cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
606 
607                         /* Clear all mcast from ALE */
608                         cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS <<
609                                                  priv->host_port);
610 
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");
614                 } else {
615                         /* Flood All Unicast Packets to Host port */
616                         cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);
617 
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);
624                         }
625                         dev_dbg(&ndev->dev, "promiscuity disabled\n");
626                 }
627         }
628 }
629 
630 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
631 {
632         struct cpsw_priv *priv = netdev_priv(ndev);
633 
634         if (ndev->flags & IFF_PROMISC) {
635                 /* Enable promiscuous mode */
636                 cpsw_set_promiscious(ndev, true);
637                 return;
638         } else {
639                 /* Disable promiscuous mode */
640                 cpsw_set_promiscious(ndev, false);
641         }
642 
643         /* Clear all mcast from ALE */
644         cpsw_ale_flush_multicast(priv->ale, ALE_ALL_PORTS << priv->host_port);
645 
646         if (!netdev_mc_empty(ndev)) {
647                 struct netdev_hw_addr *ha;
648 
649                 /* program multicast address list into ALE register */
650                 netdev_for_each_mc_addr(ha, ndev) {
651                         cpsw_add_mcast(priv, (u8 *)ha->addr);
652                 }
653         }
654 }
655 
656 static void cpsw_intr_enable(struct cpsw_priv *priv)
657 {
658         __raw_writel(0xFF, &priv->wr_regs->tx_en);
659         __raw_writel(0xFF, &priv->wr_regs->rx_en);
660 
661         cpdma_ctlr_int_ctrl(priv->dma, true);
662         return;
663 }
664 
665 static void cpsw_intr_disable(struct cpsw_priv *priv)
666 {
667         __raw_writel(0, &priv->wr_regs->tx_en);
668         __raw_writel(0, &priv->wr_regs->rx_en);
669 
670         cpdma_ctlr_int_ctrl(priv->dma, false);
671         return;
672 }
673 
674 static void cpsw_tx_handler(void *token, int len, int status)
675 {
676         struct sk_buff          *skb = token;
677         struct net_device       *ndev = skb->dev;
678         struct cpsw_priv        *priv = netdev_priv(ndev);
679 
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
682          */
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);
689 }
690 
691 static void cpsw_rx_handler(void *token, int len, int status)
692 {
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);
697         int                     ret = 0;
698 
699         cpsw_dual_emac_src_port_detect(status, priv, ndev, skb);
700 
701         if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
702                 /* the interface is going down, skbs are purged */
703                 dev_kfree_skb_any(skb);
704                 return;
705         }
706 
707         new_skb = netdev_alloc_skb_ip_align(ndev, priv->rx_packet_max);
708         if (new_skb) {
709                 skb_put(skb, len);
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++;
715         } else {
716                 ndev->stats.rx_dropped++;
717                 new_skb = skb;
718         }
719 
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);
724 }
725 
726 static irqreturn_t cpsw_interrupt(int irq, void *dev_id)
727 {
728         struct cpsw_priv *priv = dev_id;
729 
730         cpsw_intr_disable(priv);
731         if (priv->irq_enabled == true) {
732                 cpsw_disable_irq(priv);
733                 priv->irq_enabled = false;
734         }
735 
736         if (netif_running(priv->ndev)) {
737                 napi_schedule(&priv->napi);
738                 return IRQ_HANDLED;
739         }
740 
741         priv = cpsw_get_slave_priv(priv, 1);
742         if (!priv)
743                 return IRQ_NONE;
744 
745         if (netif_running(priv->ndev)) {
746                 napi_schedule(&priv->napi);
747                 return IRQ_HANDLED;
748         }
749         return IRQ_NONE;
750 }
751 
752 static int cpsw_poll(struct napi_struct *napi, int budget)
753 {
754         struct cpsw_priv        *priv = napi_to_priv(napi);
755         int                     num_tx, num_rx;
756 
757         num_tx = cpdma_chan_process(priv->txch, 128);
758         if (num_tx)
759                 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
760 
761         num_rx = cpdma_chan_process(priv->rxch, budget);
762         if (num_rx < budget) {
763                 struct cpsw_priv *prim_cpsw;
764 
765                 napi_complete(napi);
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);
772                 }
773         }
774 
775         if (num_rx || num_tx)
776                 cpsw_dbg(priv, intr, "poll %d rx, %d tx pkts\n",
777                          num_rx, num_tx);
778 
779         return num_rx;
780 }
781 
782 static inline void soft_reset(const char *module, void __iomem *reg)
783 {
784         unsigned long timeout = jiffies + HZ;
785 
786         __raw_writel(1, reg);
787         do {
788                 cpu_relax();
789         } while ((__raw_readl(reg) & 1) && time_after(timeout, jiffies));
790 
791         WARN(__raw_readl(reg) & 1, "failed to soft-reset %s\n", module);
792 }
793 
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))
797 
798 static void cpsw_set_slave_mac(struct cpsw_slave *slave,
799                                struct cpsw_priv *priv)
800 {
801         slave_write(slave, mac_hi(priv->mac_addr), SA_HI);
802         slave_write(slave, mac_lo(priv->mac_addr), SA_LO);
803 }
804 
805 static void _cpsw_adjust_link(struct cpsw_slave *slave,
806                               struct cpsw_priv *priv, bool *link)
807 {
808         struct phy_device       *phy = slave->phy;
809         u32                     mac_control = 0;
810         u32                     slave_port;
811 
812         if (!phy)
813                 return;
814 
815         slave_port = cpsw_get_slave_port(priv, slave->slave_num);
816 
817         if (phy->link) {
818                 mac_control = priv->data.mac_control;
819 
820                 /* enable forwarding */
821                 cpsw_ale_control_set(priv->ale, slave_port,
822                                      ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
823 
824                 if (phy->speed == 1000)
825                         mac_control |= BIT(7);  /* GIGABITEN    */
826                 if (phy->duplex)
827                         mac_control |= BIT(0);  /* FULLDUPLEXEN */
828 
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 */
834 
835                 *link = true;
836         } else {
837                 mac_control = 0;
838                 /* disable forwarding */
839                 cpsw_ale_control_set(priv->ale, slave_port,
840                                      ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
841         }
842 
843         if (mac_control != slave->mac_control) {
844                 phy_print_status(phy);
845                 __raw_writel(mac_control, &slave->sliver->mac_control);
846         }
847 
848         slave->mac_control = mac_control;
849 }
850 
851 static void cpsw_adjust_link(struct net_device *ndev)
852 {
853         struct cpsw_priv        *priv = netdev_priv(ndev);
854         bool                    link = false;
855 
856         for_each_slave(priv, _cpsw_adjust_link, priv, &link);
857 
858         if (link) {
859                 netif_carrier_on(ndev);
860                 if (netif_running(ndev))
861                         netif_wake_queue(ndev);
862         } else {
863                 netif_carrier_off(ndev);
864                 netif_stop_queue(ndev);
865         }
866 }
867 
868 static int cpsw_get_coalesce(struct net_device *ndev,
869                                 struct ethtool_coalesce *coal)
870 {
871         struct cpsw_priv *priv = netdev_priv(ndev);
872 
873         coal->rx_coalesce_usecs = priv->coal_intvl;
874         return 0;
875 }
876 
877 static int cpsw_set_coalesce(struct net_device *ndev,
878                                 struct ethtool_coalesce *coal)
879 {
880         struct cpsw_priv *priv = netdev_priv(ndev);
881         u32 int_ctrl;
882         u32 num_interrupts = 0;
883         u32 prescale = 0;
884         u32 addnl_dvdr = 1;
885         u32 coal_intvl = 0;
886 
887         if (!coal->rx_coalesce_usecs)
888                 return -EINVAL;
889 
890         coal_intvl = coal->rx_coalesce_usecs;
891 
892         int_ctrl =  readl(&priv->wr_regs->int_control);
893         prescale = priv->bus_freq_mhz * 4;
894 
895         if (coal_intvl < CPSW_CMINTMIN_INTVL)
896                 coal_intvl = CPSW_CMINTMIN_INTVL;
897 
898         if (coal_intvl > CPSW_CMINTMAX_INTVL) {
899                 /* Interrupt pacer works with 4us Pulse, we can
900                  * throttle further by dilating the 4us pulse.
901                  */
902                 addnl_dvdr = CPSW_INTPRESCALE_MASK / prescale;
903 
904                 if (addnl_dvdr > 1) {
905                         prescale *= addnl_dvdr;
906                         if (coal_intvl > (CPSW_CMINTMAX_INTVL * addnl_dvdr))
907                                 coal_intvl = (CPSW_CMINTMAX_INTVL
908                                                 * addnl_dvdr);
909                 } else {
910                         addnl_dvdr = 1;
911                         coal_intvl = CPSW_CMINTMAX_INTVL;
912                 }
913         }
914 
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);
918 
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);
923 
924         cpsw_notice(priv, timer, "Set coalesce to %d usecs.\n", coal_intvl);
925         if (priv->data.dual_emac) {
926                 int i;
927 
928                 for (i = 0; i < priv->data.slaves; i++) {
929                         priv = netdev_priv(priv->slaves[i].ndev);
930                         priv->coal_intvl = coal_intvl;
931                 }
932         } else {
933                 priv->coal_intvl = coal_intvl;
934         }
935 
936         return 0;
937 }
938 
939 static int cpsw_get_sset_count(struct net_device *ndev, int sset)
940 {
941         switch (sset) {
942         case ETH_SS_STATS:
943                 return CPSW_STATS_LEN;
944         default:
945                 return -EOPNOTSUPP;
946         }
947 }
948 
949 static void cpsw_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
950 {
951         u8 *p = data;
952         int i;
953 
954         switch (stringset) {
955         case ETH_SS_STATS:
956                 for (i = 0; i < CPSW_STATS_LEN; i++) {
957                         memcpy(p, cpsw_gstrings_stats[i].stat_string,
958                                ETH_GSTRING_LEN);
959                         p += ETH_GSTRING_LEN;
960                 }
961                 break;
962         }
963 }
964 
965 static void cpsw_get_ethtool_stats(struct net_device *ndev,
966                                     struct ethtool_stats *stats, u64 *data)
967 {
968         struct cpsw_priv *priv = netdev_priv(ndev);
969         struct cpdma_chan_stats rx_stats;
970         struct cpdma_chan_stats tx_stats;
971         u32 val;
972         u8 *p;
973         int i;
974 
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);
978 
979         for (i = 0; i < CPSW_STATS_LEN; i++) {
980                 switch (cpsw_gstrings_stats[i].type) {
981                 case CPSW_STATS:
982                         val = readl(priv->hw_stats +
983                                     cpsw_gstrings_stats[i].stat_offset);
984                         data[i] = val;
985                         break;
986 
987                 case CPDMA_RX_STATS:
988                         p = (u8 *)&rx_stats +
989                                 cpsw_gstrings_stats[i].stat_offset;
990                         data[i] = *(u32 *)p;
991                         break;
992 
993                 case CPDMA_TX_STATS:
994                         p = (u8 *)&tx_stats +
995                                 cpsw_gstrings_stats[i].stat_offset;
996                         data[i] = *(u32 *)p;
997                         break;
998                 }
999         }
1000 }
1001 
1002 static inline int __show_stat(char *buf, int maxlen, const char *name, u32 val)
1003 {
1004         static char *leader = "........................................";
1005 
1006         if (!val)
1007                 return 0;
1008         else
1009                 return snprintf(buf, maxlen, "%s %s %10d\n", name,
1010                                 leader + strlen(name), val);
1011 }
1012 
1013 static int cpsw_common_res_usage_state(struct cpsw_priv *priv)
1014 {
1015         u32 i;
1016         u32 usage_count = 0;
1017 
1018         if (!priv->data.dual_emac)
1019                 return 0;
1020 
1021         for (i = 0; i < priv->data.slaves; i++)
1022                 if (priv->slaves[i].open_stat)
1023                         usage_count++;
1024 
1025         return usage_count;
1026 }
1027 
1028 static inline int cpsw_tx_packet_submit(struct net_device *ndev,
1029                         struct cpsw_priv *priv, struct sk_buff *skb)
1030 {
1031         if (!priv->data.dual_emac)
1032                 return cpdma_chan_submit(priv->txch, skb, skb->data,
1033                                   skb->len, 0);
1034 
1035         if (ndev == cpsw_get_slave_ndev(priv, 0))
1036                 return cpdma_chan_submit(priv->txch, skb, skb->data,
1037                                   skb->len, 1);
1038         else
1039                 return cpdma_chan_submit(priv->txch, skb, skb->data,
1040                                   skb->len, 2);
1041 }
1042 
1043 static inline void cpsw_add_dual_emac_def_ale_entries(
1044                 struct cpsw_priv *priv, struct cpsw_slave *slave,
1045                 u32 slave_port)
1046 {
1047         u32 port_mask = 1 << slave_port | 1 << priv->host_port;
1048 
1049         if (priv->version == CPSW_VERSION_1)
1050                 slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
1051         else
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);
1059 }
1060 
1061 static void soft_reset_slave(struct cpsw_slave *slave)
1062 {
1063         char name[32];
1064 
1065         snprintf(name, sizeof(name), "slave-%d", slave->slave_num);
1066         soft_reset(name, &slave->sliver->soft_reset);
1067 }
1068 
1069 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
1070 {
1071         u32 slave_port;
1072 
1073         soft_reset_slave(slave);
1074 
1075         /* setup priority mapping */
1076         __raw_writel(RX_PRIORITY_MAPPING, &slave->sliver->rx_pri_map);
1077 
1078         switch (priv->version) {
1079         case CPSW_VERSION_1:
1080                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
1081                 break;
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);
1086                 break;
1087         }
1088 
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);
1092 
1093         slave->mac_control = 0; /* no link yet */
1094 
1095         slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1096 
1097         if (priv->data.dual_emac)
1098                 cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
1099         else
1100                 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1101                                    1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
1102 
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);
1108                 slave->phy = NULL;
1109         } else {
1110                 dev_info(priv->dev, "phy found : id is : 0x%x\n",
1111                          slave->phy->phy_id);
1112                 phy_start(slave->phy);
1113 
1114                 /* Configure GMII_SEL register */
1115                 cpsw_phy_sel(&priv->pdev->dev, slave->phy->interface,
1116                              slave->slave_num);
1117         }
1118 }
1119 
1120 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
1121 {
1122         const int vlan = priv->data.default_vlan;
1123         const int port = priv->host_port;
1124         u32 reg;
1125         int i;
1126 
1127         reg = (priv->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
1128                CPSW2_PORT_VLAN;
1129 
1130         writel(vlan, &priv->host_port_regs->port_vlan);
1131 
1132         for (i = 0; i < priv->data.slaves; i++)
1133                 slave_write(priv->slaves + i, vlan, reg);
1134 
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);
1138 }
1139 
1140 static void cpsw_init_host_port(struct cpsw_priv *priv)
1141 {
1142         u32 control_reg;
1143         u32 fifo_mode;
1144 
1145         /* soft reset the controller and initialize ale */
1146         soft_reset("cpsw", &priv->regs->soft_reset);
1147         cpsw_ale_start(priv->ale);
1148 
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);
1158 
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);
1163 
1164         cpsw_ale_control_set(priv->ale, priv->host_port,
1165                              ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
1166 
1167         if (!priv->data.dual_emac) {
1168                 cpsw_ale_add_ucast(priv->ale, priv->mac_addr, priv->host_port,
1169                                    0, 0);
1170                 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1171                                    1 << priv->host_port, 0, 0, ALE_MCAST_FWD_2);
1172         }
1173 }
1174 
1175 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_priv *priv)
1176 {
1177         u32 slave_port;
1178 
1179         slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1180 
1181         if (!slave->phy)
1182                 return;
1183         phy_stop(slave->phy);
1184         phy_disconnect(slave->phy);
1185         slave->phy = NULL;
1186         cpsw_ale_control_set(priv->ale, slave_port,
1187                              ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
1188 }
1189 
1190 static int cpsw_ndo_open(struct net_device *ndev)
1191 {
1192         struct cpsw_priv *priv = netdev_priv(ndev);
1193         struct cpsw_priv *prim_cpsw;
1194         int i, ret;
1195         u32 reg;
1196 
1197         if (!cpsw_common_res_usage_state(priv))
1198                 cpsw_intr_disable(priv);
1199         netif_carrier_off(ndev);
1200 
1201         pm_runtime_get_sync(&priv->pdev->dev);
1202 
1203         reg = priv->version;
1204 
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));
1208 
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);
1213 
1214         /* Add default VLAN */
1215         if (!priv->data.dual_emac)
1216                 cpsw_add_default_vlan(priv);
1217         else
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);
1221 
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);
1226 
1227                 /* disable priority elevation */
1228                 __raw_writel(0, &priv->regs->ptype);
1229 
1230                 /* enable statistics collection only on all ports */
1231                 __raw_writel(0x7, &priv->regs->stat_port_en);
1232 
1233                 if (WARN_ON(!priv->data.rx_descs))
1234                         priv->data.rx_descs = 128;
1235 
1236                 for (i = 0; i < priv->data.rx_descs; i++) {
1237                         struct sk_buff *skb;
1238 
1239                         ret = -ENOMEM;
1240                         skb = __netdev_alloc_skb_ip_align(priv->ndev,
1241                                         priv->rx_packet_max, GFP_KERNEL);
1242                         if (!skb)
1243                                 goto err_cleanup;
1244                         ret = cpdma_chan_submit(priv->rxch, skb, skb->data,
1245                                         skb_tailroom(skb), 0);
1246                         if (ret < 0) {
1247                                 kfree_skb(skb);
1248                                 goto err_cleanup;
1249                         }
1250                 }
1251                 /* continue even if we didn't manage to submit all
1252                  * receive descs
1253                  */
1254                 cpsw_info(priv, ifup, "submitted %d rx descriptors\n", i);
1255 
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");
1260 
1261         }
1262 
1263         /* Enable Interrupt pacing if configured */
1264         if (priv->coal_intvl != 0) {
1265                 struct ethtool_coalesce coal;
1266 
1267                 coal.rx_coalesce_usecs = (priv->coal_intvl << 4);
1268                 cpsw_set_coalesce(ndev, &coal);
1269         }
1270 
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);
1276 
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);
1282                 }
1283         }
1284 
1285         if (priv->data.dual_emac)
1286                 priv->slaves[priv->emac_port].open_stat = true;
1287         return 0;
1288 
1289 err_cleanup:
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);
1294         return ret;
1295 }
1296 
1297 static int cpsw_ndo_stop(struct net_device *ndev)
1298 {
1299         struct cpsw_priv *priv = netdev_priv(ndev);
1300 
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);
1305 
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);
1312         }
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;
1317         return 0;
1318 }
1319 
1320 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
1321                                        struct net_device *ndev)
1322 {
1323         struct cpsw_priv *priv = netdev_priv(ndev);
1324         int ret;
1325 
1326         ndev->trans_start = jiffies;
1327 
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;
1332         }
1333 
1334         if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
1335                                 priv->cpts->tx_enable)
1336                 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
1337 
1338         skb_tx_timestamp(skb);
1339 
1340         ret = cpsw_tx_packet_submit(ndev, priv, skb);
1341         if (unlikely(ret != 0)) {
1342                 cpsw_err(priv, tx_err, "desc submit failed\n");
1343                 goto fail;
1344         }
1345 
1346         /* If there is no more tx desc left free then we need to
1347          * tell the kernel to stop sending us tx frames.
1348          */
1349         if (unlikely(!cpdma_check_free_tx_desc(priv->txch)))
1350                 netif_stop_queue(ndev);
1351 
1352         return NETDEV_TX_OK;
1353 fail:
1354         ndev->stats.tx_dropped++;
1355         netif_stop_queue(ndev);
1356         return NETDEV_TX_BUSY;
1357 }
1358 
1359 #ifdef CONFIG_TI_CPTS
1360 
1361 static void cpsw_hwtstamp_v1(struct cpsw_priv *priv)
1362 {
1363         struct cpsw_slave *slave = &priv->slaves[priv->data.active_slave];
1364         u32 ts_en, seq_id;
1365 
1366         if (!priv->cpts->tx_enable && !priv->cpts->rx_enable) {
1367                 slave_write(slave, 0, CPSW1_TS_CTL);
1368                 return;
1369         }
1370 
1371         seq_id = (30 << CPSW_V1_SEQ_ID_OFS_SHIFT) | ETH_P_1588;
1372         ts_en = EVENT_MSG_BITS << CPSW_V1_MSG_TYPE_OFS;
1373 
1374         if (priv->cpts->tx_enable)
1375                 ts_en |= CPSW_V1_TS_TX_EN;
1376 
1377         if (priv->cpts->rx_enable)
1378                 ts_en |= CPSW_V1_TS_RX_EN;
1379 
1380         slave_write(slave, ts_en, CPSW1_TS_CTL);
1381         slave_write(slave, seq_id, CPSW1_TS_SEQ_LTYPE);
1382 }
1383 
1384 static void cpsw_hwtstamp_v2(struct cpsw_priv *priv)
1385 {
1386         struct cpsw_slave *slave;
1387         u32 ctrl, mtype;
1388 
1389         if (priv->data.dual_emac)
1390                 slave = &priv->slaves[priv->emac_port];
1391         else
1392                 slave = &priv->slaves[priv->data.active_slave];
1393 
1394         ctrl = slave_read(slave, CPSW2_CONTROL);
1395         switch (priv->version) {
1396         case CPSW_VERSION_2:
1397                 ctrl &= ~CTRL_V2_ALL_TS_MASK;
1398 
1399                 if (priv->cpts->tx_enable)
1400                         ctrl |= CTRL_V2_TX_TS_BITS;
1401 
1402                 if (priv->cpts->rx_enable)
1403                         ctrl |= CTRL_V2_RX_TS_BITS;
1404         break;
1405         case CPSW_VERSION_3:
1406         default:
1407                 ctrl &= ~CTRL_V3_ALL_TS_MASK;
1408 
1409                 if (priv->cpts->tx_enable)
1410                         ctrl |= CTRL_V3_TX_TS_BITS;
1411 
1412                 if (priv->cpts->rx_enable)
1413                         ctrl |= CTRL_V3_RX_TS_BITS;
1414         break;
1415         }
1416 
1417         mtype = (30 << TS_SEQ_ID_OFFSET_SHIFT) | EVENT_MSG_BITS;
1418 
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);
1422 }
1423 
1424 static int cpsw_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
1425 {
1426         struct cpsw_priv *priv = netdev_priv(dev);
1427         struct cpts *cpts = priv->cpts;
1428         struct hwtstamp_config cfg;
1429 
1430         if (priv->version != CPSW_VERSION_1 &&
1431             priv->version != CPSW_VERSION_2 &&
1432             priv->version != CPSW_VERSION_3)
1433                 return -EOPNOTSUPP;
1434 
1435         if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
1436                 return -EFAULT;
1437 
1438         /* reserved for future extensions */
1439         if (cfg.flags)
1440                 return -EINVAL;
1441 
1442         if (cfg.tx_type != HWTSTAMP_TX_OFF && cfg.tx_type != HWTSTAMP_TX_ON)
1443                 return -ERANGE;
1444 
1445         switch (cfg.rx_filter) {
1446         case HWTSTAMP_FILTER_NONE:
1447                 cpts->rx_enable = 0;
1448                 break;
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:
1453                 return -ERANGE;
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;
1465                 break;
1466         default:
1467                 return -ERANGE;
1468         }
1469 
1470         cpts->tx_enable = cfg.tx_type == HWTSTAMP_TX_ON;
1471 
1472         switch (priv->version) {
1473         case CPSW_VERSION_1:
1474                 cpsw_hwtstamp_v1(priv);
1475                 break;
1476         case CPSW_VERSION_2:
1477         case CPSW_VERSION_3:
1478                 cpsw_hwtstamp_v2(priv);
1479                 break;
1480         default:
1481                 WARN_ON(1);
1482         }
1483 
1484         return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1485 }
1486 
1487 static int cpsw_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
1488 {
1489         struct cpsw_priv *priv = netdev_priv(dev);
1490         struct cpts *cpts = priv->cpts;
1491         struct hwtstamp_config cfg;
1492 
1493         if (priv->version != CPSW_VERSION_1 &&
1494             priv->version != CPSW_VERSION_2 &&
1495             priv->version != CPSW_VERSION_3)
1496                 return -EOPNOTSUPP;
1497 
1498         cfg.flags = 0;
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);
1502 
1503         return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1504 }
1505 
1506 #endif /*CONFIG_TI_CPTS*/
1507 
1508 static int cpsw_ndo_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
1509 {
1510         struct cpsw_priv *priv = netdev_priv(dev);
1511         int slave_no = cpsw_slave_index(priv);
1512 
1513         if (!netif_running(dev))
1514                 return -EINVAL;
1515 
1516         switch (cmd) {
1517 #ifdef CONFIG_TI_CPTS
1518         case SIOCSHWTSTAMP:
1519                 return cpsw_hwtstamp_set(dev, req);
1520         case SIOCGHWTSTAMP:
1521                 return cpsw_hwtstamp_get(dev, req);
1522 #endif
1523         }
1524 
1525         if (!priv->slaves[slave_no].phy)
1526                 return -EOPNOTSUPP;
1527         return phy_mii_ioctl(priv->slaves[slave_no].phy, req, cmd);
1528 }
1529 
1530 static void cpsw_ndo_tx_timeout(struct net_device *ndev)
1531 {
1532         struct cpsw_priv *priv = netdev_priv(ndev);
1533 
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);
1544 
1545 }
1546 
1547 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
1548 {
1549         struct cpsw_priv *priv = netdev_priv(ndev);
1550         struct sockaddr *addr = (struct sockaddr *)p;
1551         int flags = 0;
1552         u16 vid = 0;
1553 
1554         if (!is_valid_ether_addr(addr->sa_data))
1555                 return -EADDRNOTAVAIL;
1556 
1557         if (priv->data.dual_emac) {
1558                 vid = priv->slaves[priv->emac_port].port_vlan;
1559                 flags = ALE_VLAN;
1560         }
1561 
1562         cpsw_ale_del_ucast(priv->ale, priv->mac_addr, priv->host_port,
1563                            flags, vid);
1564         cpsw_ale_add_ucast(priv->ale, addr->sa_data, priv->host_port,
1565                            flags, vid);
1566 
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);
1570 
1571         return 0;
1572 }
1573 
1574 #ifdef CONFIG_NET_POLL_CONTROLLER
1575 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1576 {
1577         struct cpsw_priv *priv = netdev_priv(ndev);
1578 
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);
1586 
1587 }
1588 #endif
1589 
1590 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
1591                                 unsigned short vid)
1592 {
1593         int ret;
1594 
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);
1599         if (ret != 0)
1600                 return ret;
1601 
1602         ret = cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1603                                  priv->host_port, ALE_VLAN, vid);
1604         if (ret != 0)
1605                 goto clean_vid;
1606 
1607         ret = cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1608                                  ALE_ALL_PORTS << priv->host_port,
1609                                  ALE_VLAN, vid, 0);
1610         if (ret != 0)
1611                 goto clean_vlan_ucast;
1612         return 0;
1613 
1614 clean_vlan_ucast:
1615         cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1616                             priv->host_port, ALE_VLAN, vid);
1617 clean_vid:
1618         cpsw_ale_del_vlan(priv->ale, vid, 0);
1619         return ret;
1620 }
1621 
1622 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1623                                     __be16 proto, u16 vid)
1624 {
1625         struct cpsw_priv *priv = netdev_priv(ndev);
1626 
1627         if (vid == priv->data.default_vlan)
1628                 return 0;
1629 
1630         dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1631         return cpsw_add_vlan_ale_entry(priv, vid);
1632 }
1633 
1634 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1635                                      __be16 proto, u16 vid)
1636 {
1637         struct cpsw_priv *priv = netdev_priv(ndev);
1638         int ret;
1639 
1640         if (vid == priv->data.default_vlan)
1641                 return 0;
1642 
1643         dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1644         ret = cpsw_ale_del_vlan(priv->ale, vid, 0);
1645         if (ret != 0)
1646                 return ret;
1647 
1648         ret = cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1649                                  priv->host_port, ALE_VLAN, vid);
1650         if (ret != 0)
1651                 return ret;
1652 
1653         return cpsw_ale_del_mcast(priv->ale, priv->ndev->broadcast,
1654                                   0, ALE_VLAN, vid);
1655 }
1656 
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,
1669 #endif
1670         .ndo_vlan_rx_add_vid    = cpsw_ndo_vlan_rx_add_vid,
1671         .ndo_vlan_rx_kill_vid   = cpsw_ndo_vlan_rx_kill_vid,
1672 };
1673 
1674 static void cpsw_get_drvinfo(struct net_device *ndev,
1675                              struct ethtool_drvinfo *info)
1676 {
1677         struct cpsw_priv *priv = netdev_priv(ndev);
1678 
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));
1682 }
1683 
1684 static u32 cpsw_get_msglevel(struct net_device *ndev)
1685 {
1686         struct cpsw_priv *priv = netdev_priv(ndev);
1687         return priv->msg_enable;
1688 }
1689 
1690 static void cpsw_set_msglevel(struct net_device *ndev, u32 value)
1691 {
1692         struct cpsw_priv *priv = netdev_priv(ndev);
1693         priv->msg_enable = value;
1694 }
1695 
1696 static int cpsw_get_ts_info(struct net_device *ndev,
1697                             struct ethtool_ts_info *info)
1698 {
1699 #ifdef CONFIG_TI_CPTS
1700         struct cpsw_priv *priv = netdev_priv(ndev);
1701 
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;
1710         info->tx_types =
1711                 (1 << HWTSTAMP_TX_OFF) |
1712                 (1 << HWTSTAMP_TX_ON);
1713         info->rx_filters =
1714                 (1 << HWTSTAMP_FILTER_NONE) |
1715                 (1 << HWTSTAMP_FILTER_PTP_V2_EVENT);
1716 #else
1717         info->so_timestamping =
1718                 SOF_TIMESTAMPING_TX_SOFTWARE |
1719                 SOF_TIMESTAMPING_RX_SOFTWARE |
1720                 SOF_TIMESTAMPING_SOFTWARE;
1721         info->phc_index = -1;
1722         info->tx_types = 0;
1723         info->rx_filters = 0;
1724 #endif
1725         return 0;
1726 }
1727 
1728 static int cpsw_get_settings(struct net_device *ndev,
1729                              struct ethtool_cmd *ecmd)
1730 {
1731         struct cpsw_priv *priv = netdev_priv(ndev);
1732         int slave_no = cpsw_slave_index(priv);
1733 
1734         if (priv->slaves[slave_no].phy)
1735                 return phy_ethtool_gset(priv->slaves[slave_no].phy, ecmd);
1736         else
1737                 return -EOPNOTSUPP;
1738 }
1739 
1740 static int cpsw_set_settings(struct net_device *ndev, struct ethtool_cmd *ecmd)
1741 {
1742         struct cpsw_priv *priv = netdev_priv(ndev);
1743         int slave_no = cpsw_slave_index(priv);
1744 
1745         if (priv->slaves[slave_no].phy)
1746                 return phy_ethtool_sset(priv->slaves[slave_no].phy, ecmd);
1747         else
1748                 return -EOPNOTSUPP;
1749 }
1750 
1751 static void cpsw_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1752 {
1753         struct cpsw_priv *priv = netdev_priv(ndev);
1754         int slave_no = cpsw_slave_index(priv);
1755 
1756         wol->supported = 0;
1757         wol->wolopts = 0;
1758 
1759         if (priv->slaves[slave_no].phy)
1760                 phy_ethtool_get_wol(priv->slaves[slave_no].phy, wol);
1761 }
1762 
1763 static int cpsw_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1764 {
1765         struct cpsw_priv *priv = netdev_priv(ndev);
1766         int slave_no = cpsw_slave_index(priv);
1767 
1768         if (priv->slaves[slave_no].phy)
1769                 return phy_ethtool_set_wol(priv->slaves[slave_no].phy, wol);
1770         else
1771                 return -EOPNOTSUPP;
1772 }
1773 
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,
1789 };
1790 
1791 static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv,
1792                             u32 slave_reg_ofs, u32 sliver_reg_ofs)
1793 {
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;
1797 
1798         slave->data     = data;
1799         slave->regs     = regs + slave_reg_ofs;
1800         slave->sliver   = regs + sliver_reg_ofs;
1801         slave->port_vlan = data->dual_emac_res_vlan;
1802 }
1803 
1804 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1805                          struct platform_device *pdev)
1806 {
1807         struct device_node *node = pdev->dev.of_node;
1808         struct device_node *slave_node;
1809         int i = 0, ret;
1810         u32 prop;
1811 
1812         if (!node)
1813                 return -EINVAL;
1814 
1815         if (of_property_read_u32(node, "slaves", &prop)) {
1816                 dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1817                 return -EINVAL;
1818         }
1819         data->slaves = prop;
1820 
1821         if (of_property_read_u32(node, "active_slave", &prop)) {
1822                 dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1823                 return -EINVAL;
1824         }
1825         data->active_slave = prop;
1826 
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");
1829                 return -EINVAL;
1830         }
1831         data->cpts_clock_mult = prop;
1832 
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");
1835                 return -EINVAL;
1836         }
1837         data->cpts_clock_shift = prop;
1838 
1839         data->slave_data = devm_kzalloc(&pdev->dev, data->slaves
1840                                         * sizeof(struct cpsw_slave_data),
1841                                         GFP_KERNEL);
1842         if (!data->slave_data)
1843                 return -ENOMEM;
1844 
1845         if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1846                 dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1847                 return -EINVAL;
1848         }
1849         data->channels = prop;
1850 
1851         if (of_property_read_u32(node, "ale_entries", &prop)) {
1852                 dev_err(&pdev->dev, "Missing ale_entries property in the DT.\n");
1853                 return -EINVAL;
1854         }
1855         data->ale_entries = prop;
1856 
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");
1859                 return -EINVAL;
1860         }
1861         data->bd_ram_size = prop;
1862 
1863         if (of_property_read_u32(node, "rx_descs", &prop)) {
1864                 dev_err(&pdev->dev, "Missing rx_descs property in the DT.\n");
1865                 return -EINVAL;
1866         }
1867         data->rx_descs = prop;
1868 
1869         if (of_property_read_u32(node, "mac_control", &prop)) {
1870                 dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
1871                 return -EINVAL;
1872         }
1873         data->mac_control = prop;
1874 
1875         if (of_property_read_bool(node, "dual_emac"))
1876                 data->dual_emac = 1;
1877 
1878         /*
1879          * Populate all the child nodes here...
1880          */
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 */
1883         if (ret)
1884                 dev_warn(&pdev->dev, "Doesn't have any child node\n");
1885 
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;
1889                 u32 phyid;
1890                 int lenp;
1891                 const __be32 *parp;
1892                 struct device_node *mdio_node;
1893                 struct platform_device *mdio;
1894 
1895                 /* This is no slave child node, continue */
1896                 if (strcmp(slave_node->name, "slave"))
1897                         continue;
1898 
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);
1902                         return -EINVAL;
1903                 }
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);
1908                 if (!mdio) {
1909                         pr_err("Missing mdio platform device\n");
1910                         return -EINVAL;
1911                 }
1912                 snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
1913                          PHY_ID_FMT, mdio->name, phyid);
1914 
1915                 mac_addr = of_get_mac_address(slave_node);
1916                 if (mac_addr)
1917                         memcpy(slave_data->mac_addr, mac_addr, ETH_ALEN);
1918 
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",
1922                                 i);
1923                         return slave_data->phy_if;
1924                 }
1925 
1926                 if (data->dual_emac) {
1927                         if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
1928                                                  &prop)) {
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);
1933                         } else {
1934                                 slave_data->dual_emac_res_vlan = prop;
1935                         }
1936                 }
1937 
1938                 i++;
1939                 if (i == data->slaves)
1940                         break;
1941         }
1942 
1943         return 0;
1944 }
1945 
1946 static int cpsw_probe_dual_emac(struct platform_device *pdev,
1947                                 struct cpsw_priv *priv)
1948 {
1949         struct cpsw_platform_data       *data = &priv->data;
1950         struct net_device               *ndev;
1951         struct cpsw_priv                *priv_sl2;
1952         int ret = 0, i;
1953 
1954         ndev = alloc_etherdev(sizeof(struct cpsw_priv));
1955         if (!ndev) {
1956                 dev_err(&pdev->dev, "cpsw: error allocating net_device\n");
1957                 return -ENOMEM;
1958         }
1959 
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);
1968 
1969         if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
1970                 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
1971                         ETH_ALEN);
1972                 dev_info(&pdev->dev, "cpsw: Detected MACID = %pM\n", priv_sl2->mac_addr);
1973         } else {
1974                 random_ether_addr(priv_sl2->mac_addr);
1975                 dev_info(&pdev->dev, "cpsw: Random MACID = %pM\n", priv_sl2->mac_addr);
1976         }
1977         memcpy(ndev->dev_addr, priv_sl2->mac_addr, ETH_ALEN);
1978 
1979         priv_sl2->slaves = priv->slaves;
1980         priv_sl2->clk = priv->clk;
1981 
1982         priv_sl2->coal_intvl = 0;
1983         priv_sl2->bus_freq_mhz = priv->bus_freq_mhz;
1984 
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;
1998 
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;
2002         }
2003         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2004 
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);
2008 
2009         /* register the network device */
2010         SET_NETDEV_DEV(ndev, &pdev->dev);
2011         ret = register_netdev(ndev);
2012         if (ret) {
2013                 dev_err(&pdev->dev, "cpsw: error registering net device\n");
2014                 free_netdev(ndev);
2015                 ret = -ENODEV;
2016         }
2017 
2018         return ret;
2019 }
2020 
2021 static int cpsw_probe(struct platform_device *pdev)
2022 {
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;
2032 
2033         ndev = alloc_etherdev(sizeof(struct cpsw_priv));
2034         if (!ndev) {
2035                 dev_err(&pdev->dev, "error allocating net_device\n");
2036                 return -ENOMEM;
2037         }
2038 
2039         platform_set_drvdata(pdev, ndev);
2040         priv = netdev_priv(ndev);
2041         spin_lock_init(&priv->lock);
2042         priv->pdev = pdev;
2043         priv->ndev = ndev;
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;
2049         if (!priv->cpts) {
2050                 dev_err(&pdev->dev, "error allocating cpts\n");
2051                 goto clean_ndev_ret;
2052         }
2053 
2054         /*
2055          * This may be required here for child devices.
2056          */
2057         pm_runtime_enable(&pdev->dev);
2058 
2059         /* Select default pin state */
2060         pinctrl_pm_select_default_state(&pdev->dev);
2061 
2062         if (cpsw_probe_dt(&priv->data, pdev)) {
2063                 dev_err(&pdev->dev, "cpsw: platform data missing\n");
2064                 ret = -ENODEV;
2065                 goto clean_runtime_disable_ret;
2066         }
2067         data = &priv->data;
2068 
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);
2072         } else {
2073                 eth_random_addr(priv->mac_addr);
2074                 dev_info(&pdev->dev, "Random MACID = %pM\n", priv->mac_addr);
2075         }
2076 
2077         memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
2078 
2079         priv->slaves = devm_kzalloc(&pdev->dev,
2080                                     sizeof(struct cpsw_slave) * data->slaves,
2081                                     GFP_KERNEL);
2082         if (!priv->slaves) {
2083                 ret = -ENOMEM;
2084                 goto clean_runtime_disable_ret;
2085         }
2086         for (i = 0; i < data->slaves; i++)
2087                 priv->slaves[i].slave_num = i;
2088 
2089         priv->slaves[0].ndev = ndev;
2090         priv->emac_port = 0;
2091 
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");
2095                 ret = -ENODEV;
2096                 goto clean_runtime_disable_ret;
2097         }
2098         priv->coal_intvl = 0;
2099         priv->bus_freq_mhz = clk_get_rate(priv->clk) / 1000000;
2100 
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;
2106         }
2107         priv->regs = ss_regs;
2108         priv->host_port = HOST_PORT_NUM;
2109 
2110         /* Need to enable clocks with runtime PM api to access module
2111          * registers
2112          */
2113         pm_runtime_get_sync(&pdev->dev);
2114         priv->version = readl(&priv->regs->id_ver);
2115         pm_runtime_put_sync(&pdev->dev);
2116 
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;
2122         }
2123 
2124         memset(&dma_params, 0, sizeof(dma_params));
2125         memset(&ale_params, 0, sizeof(ale_params));
2126 
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;
2139                 break;
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;
2154                 break;
2155         default:
2156                 dev_err(priv->dev, "unknown version 0x%08x\n", priv->version);
2157                 ret = -ENODEV;
2158                 goto clean_runtime_disable_ret;
2159         }
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;
2165         }
2166 
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;
2173 
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;
2181 
2182         priv->dma = cpdma_ctlr_create(&dma_params);
2183         if (!priv->dma) {
2184                 dev_err(priv->dev, "error initializing dma\n");
2185                 ret = -ENOMEM;
2186                 goto clean_runtime_disable_ret;
2187         }
2188 
2189         priv->txch = cpdma_chan_create(priv->dma, tx_chan_num(0),
2190                                        cpsw_tx_handler);
2191         priv->rxch = cpdma_chan_create(priv->dma, rx_chan_num(0),
2192                                        cpsw_rx_handler);
2193 
2194         if (WARN_ON(!priv->txch || !priv->rxch)) {
2195                 dev_err(priv->dev, "error initializing dma channels\n");
2196                 ret = -ENOMEM;
2197                 goto clean_dma_ret;
2198         }
2199 
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;
2204 
2205         priv->ale = cpsw_ale_create(&ale_params);
2206         if (!priv->ale) {
2207                 dev_err(priv->dev, "error initializing ale engine\n");
2208                 ret = -ENODEV;
2209                 goto clean_dma_ret;
2210         }
2211 
2212         ndev->irq = platform_get_irq(pdev, 0);
2213         if (ndev->irq < 0) {
2214                 dev_err(priv->dev, "error getting irq resource\n");
2215                 ret = -ENOENT;
2216                 goto clean_ale_ret;
2217         }
2218 
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");
2224                                 goto clean_ale_ret;
2225                         }
2226                         priv->irqs_table[k] = i;
2227                         priv->num_irqs = k + 1;
2228                 }
2229                 k++;
2230         }
2231 
2232         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2233 
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);
2237 
2238         /* register the network device */
2239         SET_NETDEV_DEV(ndev, &pdev->dev);
2240         ret = register_netdev(ndev);
2241         if (ret) {
2242                 dev_err(priv->dev, "error registering net device\n");
2243                 ret = -ENODEV;
2244                 goto clean_ale_ret;
2245         }
2246 
2247         cpsw_notice(priv, probe, "initialized device (regs %pa, irq %d)\n",
2248                     &ss_res->start, ndev->irq);
2249 
2250         if (priv->data.dual_emac) {
2251                 ret = cpsw_probe_dual_emac(pdev, priv);
2252                 if (ret) {
2253                         cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
2254                         goto clean_ale_ret;
2255                 }
2256         }
2257 
2258         return 0;
2259 
2260 clean_ale_ret:
2261         cpsw_ale_destroy(priv->ale);
2262 clean_dma_ret:
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);
2268 clean_ndev_ret:
2269         free_netdev(priv->ndev);
2270         return ret;
2271 }
2272 
2273 static int cpsw_remove(struct platform_device *pdev)
2274 {
2275         struct net_device *ndev = platform_get_drvdata(pdev);
2276         struct cpsw_priv *priv = netdev_priv(ndev);
2277 
2278         if (priv->data.dual_emac)
2279                 unregister_netdev(cpsw_get_slave_ndev(priv, 1));
2280         unregister_netdev(ndev);
2281 
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));
2289         free_netdev(ndev);
2290         return 0;
2291 }
2292 
2293 static int cpsw_suspend(struct device *dev)
2294 {
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);
2298 
2299         if (netif_running(ndev))
2300                 cpsw_ndo_stop(ndev);
2301 
2302         for_each_slave(priv, soft_reset_slave);
2303 
2304         pm_runtime_put_sync(&pdev->dev);
2305 
2306         /* Select sleep pin state */
2307         pinctrl_pm_select_sleep_state(&pdev->dev);
2308 
2309         return 0;
2310 }
2311 
2312 static int cpsw_resume(struct device *dev)
2313 {
2314         struct platform_device  *pdev = to_platform_device(dev);
2315         struct net_device       *ndev = platform_get_drvdata(pdev);
2316 
2317         pm_runtime_get_sync(&pdev->dev);
2318 
2319         /* Select default pin state */
2320         pinctrl_pm_select_default_state(&pdev->dev);
2321 
2322         if (netif_running(ndev))
2323                 cpsw_ndo_open(ndev);
2324         return 0;
2325 }
2326 
2327 static const struct dev_pm_ops cpsw_pm_ops = {
2328         .suspend        = cpsw_suspend,
2329         .resume         = cpsw_resume,
2330 };
2331 
2332 static const struct of_device_id cpsw_of_mtable[] = {
2333         { .compatible = "ti,cpsw", },
2334         { /* sentinel */ },
2335 };
2336 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
2337 
2338 static struct platform_driver cpsw_driver = {
2339         .driver = {
2340                 .name    = "cpsw",
2341                 .owner   = THIS_MODULE,
2342                 .pm      = &cpsw_pm_ops,
2343                 .of_match_table = cpsw_of_mtable,
2344         },
2345         .probe = cpsw_probe,
2346         .remove = cpsw_remove,
2347 };
2348 
2349 static int __init cpsw_init(void)
2350 {
2351         return platform_driver_register(&cpsw_driver);
2352 }
2353 late_initcall(cpsw_init);
2354 
2355 static void __exit cpsw_exit(void)
2356 {
2357         platform_driver_unregister(&cpsw_driver);
2358 }
2359 module_exit(cpsw_exit);
2360 
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");
2365 

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