2 * Copyright (c) 2003-2012 Broadcom Corporation
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the Broadcom
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in
19 * the documentation and/or other materials provided with the
22 * THIS SOFTWARE IS PROVIDED BY BROADCOM ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
29 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
31 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
32 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 #include <linux/phy.h>
35 #include <linux/delay.h>
36 #include <linux/netdevice.h>
37 #include <linux/smp.h>
38 #include <linux/ethtool.h>
39 #include <linux/module.h>
40 #include <linux/etherdevice.h>
41 #include <linux/skbuff.h>
42 #include <linux/jiffies.h>
43 #include <linux/interrupt.h>
44 #include <linux/platform_device.h>
46 #include <asm/mipsregs.h>
48 * fmn.h - For FMN credit configuration and registering fmn_handler.
49 * FMN is communication mechanism that allows processing agents within
50 * XLR/XLS to communicate each other.
52 #include <asm/netlogic/xlr/fmn.h>
54 #include "platform_net.h"
58 * The readl/writel implementation byteswaps on XLR/XLS, so
59 * we need to use __raw_ IO to read the NAE registers
60 * because they are in the big-endian MMIO area on the SoC.
62 static inline void xlr_nae_wreg(u32 __iomem
*base
, unsigned int reg
, u32 val
)
64 __raw_writel(val
, base
+ reg
);
67 static inline u32
xlr_nae_rdreg(u32 __iomem
*base
, unsigned int reg
)
69 return __raw_readl(base
+ reg
);
72 static inline void xlr_reg_update(u32
*base_addr
,
73 u32 off
, u32 val
, u32 mask
)
77 tmp
= xlr_nae_rdreg(base_addr
, off
);
78 xlr_nae_wreg(base_addr
, off
, (tmp
& ~mask
) | (val
& mask
));
82 * Table of net_device pointers indexed by port, this will be used to
83 * lookup the net_device corresponding to a port by the message ring handler.
85 * Maximum ports in XLR/XLS is 8(8 GMAC on XLS, 4 GMAC + 2 XGMAC on XLR)
87 static struct net_device
*mac_to_ndev
[8];
89 static inline struct sk_buff
*mac_get_skb_back_ptr(void *addr
)
91 struct sk_buff
**back_ptr
;
94 * this function should be used only for newly allocated packets.
95 * It assumes the first cacheline is for the back pointer related
98 back_ptr
= (struct sk_buff
**)(addr
- MAC_SKB_BACK_PTR_SIZE
);
102 static inline void mac_put_skb_back_ptr(struct sk_buff
*skb
)
104 struct sk_buff
**back_ptr
= (struct sk_buff
**)skb
->data
;
107 * this function should be used only for newly allocated packets.
108 * It assumes the first cacheline is for the back pointer related
111 skb_reserve(skb
, MAC_SKB_BACK_PTR_SIZE
);
115 static int send_to_rfr_fifo(struct xlr_net_priv
*priv
, void *addr
)
117 struct nlm_fmn_msg msg
;
118 int ret
= 0, num_try
= 0, stnid
;
119 unsigned long paddr
, mflags
;
121 paddr
= virt_to_bus(addr
);
122 msg
.msg0
= (u64
)paddr
& 0xffffffffe0ULL
;
126 stnid
= priv
->nd
->rfr_station
;
128 mflags
= nlm_cop2_enable();
129 ret
= nlm_fmn_send(1, 0, stnid
, &msg
);
130 nlm_cop2_restore(mflags
);
133 } while (++num_try
< 10000);
135 pr_err("Send to RFR failed in RX path\n");
139 static inline struct sk_buff
*xlr_alloc_skb(void)
143 /* skb->data is cache aligned */
144 skb
= alloc_skb(XLR_RX_BUF_SIZE
, GFP_ATOMIC
);
146 pr_err("SKB allocation failed\n");
149 mac_put_skb_back_ptr(skb
);
153 static void xlr_net_fmn_handler(int bkt
, int src_stnid
, int size
,
154 int code
, struct nlm_fmn_msg
*msg
, void *arg
)
156 struct sk_buff
*skb
, *skb_new
= NULL
;
157 struct net_device
*ndev
;
158 struct xlr_net_priv
*priv
;
162 length
= (msg
->msg0
>> 40) & 0x3fff;
164 addr
= bus_to_virt(msg
->msg0
& 0xffffffffffULL
);
165 dev_kfree_skb_any(addr
);
167 addr
= bus_to_virt(msg
->msg0
& 0xffffffffe0ULL
);
168 length
= length
- BYTE_OFFSET
- MAC_CRC_LEN
;
169 port
= msg
->msg0
& 0x0f;
170 if (src_stnid
== FMN_STNID_GMAC1
)
172 skb
= mac_get_skb_back_ptr(addr
);
173 skb
->dev
= mac_to_ndev
[port
];
175 priv
= netdev_priv(ndev
);
177 /* 16 byte IP header align */
178 skb_reserve(skb
, BYTE_OFFSET
);
179 skb_put(skb
, length
);
180 skb
->protocol
= eth_type_trans(skb
, skb
->dev
);
181 skb
->dev
->last_rx
= jiffies
;
184 skb_new
= xlr_alloc_skb();
186 send_to_rfr_fifo(priv
, skb_new
->data
);
191 /* Ethtool operation */
192 static int xlr_get_settings(struct net_device
*ndev
, struct ethtool_cmd
*ecmd
)
194 struct xlr_net_priv
*priv
= netdev_priv(ndev
);
195 struct phy_device
*phydev
= priv
->mii_bus
->phy_map
[priv
->phy_addr
];
199 return phy_ethtool_gset(phydev
, ecmd
);
202 static int xlr_set_settings(struct net_device
*ndev
, struct ethtool_cmd
*ecmd
)
204 struct xlr_net_priv
*priv
= netdev_priv(ndev
);
205 struct phy_device
*phydev
= priv
->mii_bus
->phy_map
[priv
->phy_addr
];
209 return phy_ethtool_sset(phydev
, ecmd
);
212 static struct ethtool_ops xlr_ethtool_ops
= {
213 .get_settings
= xlr_get_settings
,
214 .set_settings
= xlr_set_settings
,
218 static int xlr_net_fill_rx_ring(struct net_device
*ndev
)
221 struct xlr_net_priv
*priv
= netdev_priv(ndev
);
224 for (i
= 0; i
< MAX_FRIN_SPILL
/2; i
++) {
225 skb
= xlr_alloc_skb();
228 send_to_rfr_fifo(priv
, skb
->data
);
230 pr_info("Rx ring setup done\n");
234 static int xlr_net_open(struct net_device
*ndev
)
237 struct xlr_net_priv
*priv
= netdev_priv(ndev
);
238 struct phy_device
*phydev
= priv
->mii_bus
->phy_map
[priv
->phy_addr
];
240 /* schedule a link state check */
243 err
= phy_start_aneg(phydev
);
245 pr_err("Autoneg failed\n");
249 /* Setup the speed from PHY to internal reg*/
250 xlr_set_gmac_speed(priv
);
251 netif_tx_start_all_queues(ndev
);
255 static int xlr_net_stop(struct net_device
*ndev
)
257 struct xlr_net_priv
*priv
= netdev_priv(ndev
);
258 struct phy_device
*phydev
= priv
->mii_bus
->phy_map
[priv
->phy_addr
];
261 netif_tx_stop_all_queues(ndev
);
265 static void xlr_make_tx_desc(struct nlm_fmn_msg
*msg
, unsigned long addr
,
268 unsigned long physkb
= virt_to_phys(skb
);
269 int cpu_core
= nlm_core_id();
270 int fr_stn_id
= cpu_core
* 8 + XLR_FB_STN
; /* FB to 6th bucket */
271 msg
->msg0
= (((u64
)1 << 63) | /* End of packet descriptor */
272 ((u64
)127 << 54) | /* No Free back */
273 (u64
)skb
->len
<< 40 | /* Length of data */
275 msg
->msg1
= (((u64
)1 << 63) |
276 ((u64
)fr_stn_id
<< 54) | /* Free back id */
277 (u64
)0 << 40 | /* Set len to 0 */
278 ((u64
)physkb
& 0xffffffff)); /* 32bit address */
279 msg
->msg2
= msg
->msg3
= 0;
282 static void __maybe_unused
xlr_wakeup_queue(unsigned long dev
)
284 struct net_device
*ndev
= (struct net_device
*) dev
;
285 struct xlr_net_priv
*priv
= netdev_priv(ndev
);
286 struct phy_device
*phydev
= priv
->mii_bus
->phy_map
[priv
->phy_addr
];
289 netif_tx_wake_queue(netdev_get_tx_queue(ndev
, priv
->wakeup_q
));
292 static netdev_tx_t
xlr_net_start_xmit(struct sk_buff
*skb
,
293 struct net_device
*ndev
)
295 struct nlm_fmn_msg msg
;
296 struct xlr_net_priv
*priv
= netdev_priv(ndev
);
300 xlr_make_tx_desc(&msg
, virt_to_phys(skb
->data
), skb
);
301 flags
= nlm_cop2_enable();
302 ret
= nlm_fmn_send(2, 0, priv
->nd
->tx_stnid
, &msg
);
303 nlm_cop2_restore(flags
);
305 dev_kfree_skb_any(skb
);
309 static u16
xlr_net_select_queue(struct net_device
*ndev
, struct sk_buff
*skb
,
312 return (u16
)smp_processor_id();
315 static void xlr_hw_set_mac_addr(struct net_device
*ndev
)
317 struct xlr_net_priv
*priv
= netdev_priv(ndev
);
319 /* set mac station address */
320 xlr_nae_wreg(priv
->base_addr
, R_MAC_ADDR0
,
321 ((ndev
->dev_addr
[5] << 24) | (ndev
->dev_addr
[4] << 16) |
322 (ndev
->dev_addr
[3] << 8) | (ndev
->dev_addr
[2])));
323 xlr_nae_wreg(priv
->base_addr
, R_MAC_ADDR0
+ 1,
324 ((ndev
->dev_addr
[1] << 24) | (ndev
->dev_addr
[0] << 16)));
326 xlr_nae_wreg(priv
->base_addr
, R_MAC_ADDR_MASK2
, 0xffffffff);
327 xlr_nae_wreg(priv
->base_addr
, R_MAC_ADDR_MASK2
+ 1, 0xffffffff);
328 xlr_nae_wreg(priv
->base_addr
, R_MAC_ADDR_MASK3
, 0xffffffff);
329 xlr_nae_wreg(priv
->base_addr
, R_MAC_ADDR_MASK3
+ 1, 0xffffffff);
331 xlr_nae_wreg(priv
->base_addr
, R_MAC_FILTER_CONFIG
,
332 (1 << O_MAC_FILTER_CONFIG__BROADCAST_EN
) |
333 (1 << O_MAC_FILTER_CONFIG__ALL_MCAST_EN
) |
334 (1 << O_MAC_FILTER_CONFIG__MAC_ADDR0_VALID
));
336 if (priv
->nd
->phy_interface
== PHY_INTERFACE_MODE_RGMII
||
337 priv
->nd
->phy_interface
== PHY_INTERFACE_MODE_SGMII
)
338 xlr_reg_update(priv
->base_addr
, R_IPG_IFG
, MAC_B2B_IPG
, 0x7f);
341 static int xlr_net_set_mac_addr(struct net_device
*ndev
, void *data
)
345 err
= eth_mac_addr(ndev
, data
);
348 xlr_hw_set_mac_addr(ndev
);
352 static void xlr_set_rx_mode(struct net_device
*ndev
)
354 struct xlr_net_priv
*priv
= netdev_priv(ndev
);
357 regval
= xlr_nae_rdreg(priv
->base_addr
, R_MAC_FILTER_CONFIG
);
359 if (ndev
->flags
& IFF_PROMISC
) {
360 regval
|= (1 << O_MAC_FILTER_CONFIG__BROADCAST_EN
) |
361 (1 << O_MAC_FILTER_CONFIG__PAUSE_FRAME_EN
) |
362 (1 << O_MAC_FILTER_CONFIG__ALL_MCAST_EN
) |
363 (1 << O_MAC_FILTER_CONFIG__ALL_UCAST_EN
);
365 regval
&= ~((1 << O_MAC_FILTER_CONFIG__PAUSE_FRAME_EN
) |
366 (1 << O_MAC_FILTER_CONFIG__ALL_UCAST_EN
));
369 xlr_nae_wreg(priv
->base_addr
, R_MAC_FILTER_CONFIG
, regval
);
372 static void xlr_stats(struct net_device
*ndev
, struct rtnl_link_stats64
*stats
)
374 struct xlr_net_priv
*priv
= netdev_priv(ndev
);
376 stats
->rx_packets
= xlr_nae_rdreg(priv
->base_addr
, RX_PACKET_COUNTER
);
377 stats
->tx_packets
= xlr_nae_rdreg(priv
->base_addr
, TX_PACKET_COUNTER
);
378 stats
->rx_bytes
= xlr_nae_rdreg(priv
->base_addr
, RX_BYTE_COUNTER
);
379 stats
->tx_bytes
= xlr_nae_rdreg(priv
->base_addr
, TX_BYTE_COUNTER
);
380 stats
->tx_errors
= xlr_nae_rdreg(priv
->base_addr
, TX_FCS_ERROR_COUNTER
);
381 stats
->rx_dropped
= xlr_nae_rdreg(priv
->base_addr
,
382 RX_DROP_PACKET_COUNTER
);
383 stats
->tx_dropped
= xlr_nae_rdreg(priv
->base_addr
,
384 TX_DROP_FRAME_COUNTER
);
386 stats
->multicast
= xlr_nae_rdreg(priv
->base_addr
,
387 RX_MULTICAST_PACKET_COUNTER
);
388 stats
->collisions
= xlr_nae_rdreg(priv
->base_addr
,
389 TX_TOTAL_COLLISION_COUNTER
);
391 stats
->rx_length_errors
= xlr_nae_rdreg(priv
->base_addr
,
392 RX_FRAME_LENGTH_ERROR_COUNTER
);
393 stats
->rx_over_errors
= xlr_nae_rdreg(priv
->base_addr
,
394 RX_DROP_PACKET_COUNTER
);
395 stats
->rx_crc_errors
= xlr_nae_rdreg(priv
->base_addr
,
396 RX_FCS_ERROR_COUNTER
);
397 stats
->rx_frame_errors
= xlr_nae_rdreg(priv
->base_addr
,
398 RX_ALIGNMENT_ERROR_COUNTER
);
400 stats
->rx_fifo_errors
= xlr_nae_rdreg(priv
->base_addr
,
401 RX_DROP_PACKET_COUNTER
);
402 stats
->rx_missed_errors
= xlr_nae_rdreg(priv
->base_addr
,
403 RX_CARRIER_SENSE_ERROR_COUNTER
);
405 stats
->rx_errors
= (stats
->rx_over_errors
+ stats
->rx_crc_errors
+
406 stats
->rx_frame_errors
+ stats
->rx_fifo_errors
+
407 stats
->rx_missed_errors
);
409 stats
->tx_aborted_errors
= xlr_nae_rdreg(priv
->base_addr
,
410 TX_EXCESSIVE_COLLISION_PACKET_COUNTER
);
411 stats
->tx_carrier_errors
= xlr_nae_rdreg(priv
->base_addr
,
412 TX_DROP_FRAME_COUNTER
);
413 stats
->tx_fifo_errors
= xlr_nae_rdreg(priv
->base_addr
,
414 TX_DROP_FRAME_COUNTER
);
417 static struct rtnl_link_stats64
*xlr_get_stats64(struct net_device
*ndev
,
418 struct rtnl_link_stats64
*stats
)
420 xlr_stats(ndev
, stats
);
424 static struct net_device_ops xlr_netdev_ops
= {
425 .ndo_open
= xlr_net_open
,
426 .ndo_stop
= xlr_net_stop
,
427 .ndo_start_xmit
= xlr_net_start_xmit
,
428 .ndo_select_queue
= xlr_net_select_queue
,
429 .ndo_set_mac_address
= xlr_net_set_mac_addr
,
430 .ndo_set_rx_mode
= xlr_set_rx_mode
,
431 .ndo_get_stats64
= xlr_get_stats64
,
435 static void *xlr_config_spill(struct xlr_net_priv
*priv
, int reg_start_0
,
436 int reg_start_1
, int reg_size
, int size
)
440 unsigned long phys_addr
;
443 base
= priv
->base_addr
;
445 spill
= kmalloc(spill_size
+ SMP_CACHE_BYTES
, GFP_ATOMIC
);
447 pr_err("Unable to allocate memory for spill area!\n");
449 spill
= PTR_ALIGN(spill
, SMP_CACHE_BYTES
);
450 phys_addr
= virt_to_phys(spill
);
451 dev_dbg(&priv
->ndev
->dev
, "Allocated spill %d bytes at %lx\n",
453 xlr_nae_wreg(base
, reg_start_0
, (phys_addr
>> 5) & 0xffffffff);
454 xlr_nae_wreg(base
, reg_start_1
, ((u64
)phys_addr
>> 37) & 0x07);
455 xlr_nae_wreg(base
, reg_size
, spill_size
);
461 * Configure the 6 FIFO's that are used by the network accelarator to
462 * communicate with the rest of the XLx device. 4 of the FIFO's are for
463 * packets from NA --> cpu (called Class FIFO's) and 2 are for feeding
464 * the NA with free descriptors.
466 static void xlr_config_fifo_spill_area(struct xlr_net_priv
*priv
)
468 priv
->frin_spill
= xlr_config_spill(priv
,
469 R_REG_FRIN_SPILL_MEM_START_0
,
470 R_REG_FRIN_SPILL_MEM_START_1
,
471 R_REG_FRIN_SPILL_MEM_SIZE
,
474 priv
->frout_spill
= xlr_config_spill(priv
,
475 R_FROUT_SPILL_MEM_START_0
,
476 R_FROUT_SPILL_MEM_START_1
,
477 R_FROUT_SPILL_MEM_SIZE
,
480 priv
->class_0_spill
= xlr_config_spill(priv
,
481 R_CLASS0_SPILL_MEM_START_0
,
482 R_CLASS0_SPILL_MEM_START_1
,
483 R_CLASS0_SPILL_MEM_SIZE
,
486 priv
->class_1_spill
= xlr_config_spill(priv
,
487 R_CLASS1_SPILL_MEM_START_0
,
488 R_CLASS1_SPILL_MEM_START_1
,
489 R_CLASS1_SPILL_MEM_SIZE
,
492 priv
->class_2_spill
= xlr_config_spill(priv
,
493 R_CLASS2_SPILL_MEM_START_0
,
494 R_CLASS2_SPILL_MEM_START_1
,
495 R_CLASS2_SPILL_MEM_SIZE
,
498 priv
->class_3_spill
= xlr_config_spill(priv
,
499 R_CLASS3_SPILL_MEM_START_0
,
500 R_CLASS3_SPILL_MEM_START_1
,
501 R_CLASS3_SPILL_MEM_SIZE
,
507 * Configure PDE to Round-Robin distribution of packets to the
510 static void xlr_config_pde(struct xlr_net_priv
*priv
)
515 /* Each core has 8 buckets(station) */
516 for (i
= 0; i
< hweight32(priv
->nd
->cpu_mask
); i
++)
517 bkt_map
|= (0xff << (i
* 8));
519 xlr_nae_wreg(priv
->base_addr
, R_PDE_CLASS_0
, (bkt_map
& 0xffffffff));
520 xlr_nae_wreg(priv
->base_addr
, R_PDE_CLASS_0
+ 1,
521 ((bkt_map
>> 32) & 0xffffffff));
523 xlr_nae_wreg(priv
->base_addr
, R_PDE_CLASS_1
, (bkt_map
& 0xffffffff));
524 xlr_nae_wreg(priv
->base_addr
, R_PDE_CLASS_1
+ 1,
525 ((bkt_map
>> 32) & 0xffffffff));
527 xlr_nae_wreg(priv
->base_addr
, R_PDE_CLASS_2
, (bkt_map
& 0xffffffff));
528 xlr_nae_wreg(priv
->base_addr
, R_PDE_CLASS_2
+ 1,
529 ((bkt_map
>> 32) & 0xffffffff));
531 xlr_nae_wreg(priv
->base_addr
, R_PDE_CLASS_3
, (bkt_map
& 0xffffffff));
532 xlr_nae_wreg(priv
->base_addr
, R_PDE_CLASS_3
+ 1,
533 ((bkt_map
>> 32) & 0xffffffff));
537 * Setup the Message ring credits, bucket size and other
538 * common configuration
540 static void xlr_config_common(struct xlr_net_priv
*priv
)
542 struct xlr_fmn_info
*gmac
= priv
->nd
->gmac_fmn_info
;
543 int start_stn_id
= gmac
->start_stn_id
;
544 int end_stn_id
= gmac
->end_stn_id
;
545 int *bucket_size
= priv
->nd
->bucket_size
;
548 /* Setting non-core MsgBktSize(0x321 - 0x325) */
549 for (i
= start_stn_id
; i
<= end_stn_id
; i
++) {
550 xlr_nae_wreg(priv
->base_addr
,
551 R_GMAC_RFR0_BUCKET_SIZE
+ i
- start_stn_id
,
556 * Setting non-core Credit counter register
557 * Distributing Gmac's credit to CPU's
559 for (i
= 0; i
< 8; i
++) {
560 for (j
= 0; j
< 8; j
++)
561 xlr_nae_wreg(priv
->base_addr
,
562 (R_CC_CPU0_0
+ (i
* 8)) + j
,
563 gmac
->credit_config
[(i
* 8) + j
]);
566 xlr_nae_wreg(priv
->base_addr
, R_MSG_TX_THRESHOLD
, 3);
567 xlr_nae_wreg(priv
->base_addr
, R_DMACR0
, 0xffffffff);
568 xlr_nae_wreg(priv
->base_addr
, R_DMACR1
, 0xffffffff);
569 xlr_nae_wreg(priv
->base_addr
, R_DMACR2
, 0xffffffff);
570 xlr_nae_wreg(priv
->base_addr
, R_DMACR3
, 0xffffffff);
571 xlr_nae_wreg(priv
->base_addr
, R_FREEQCARVE
, 0);
573 xlr_net_fill_rx_ring(priv
->ndev
);
574 nlm_register_fmn_handler(start_stn_id
, end_stn_id
, xlr_net_fmn_handler
,
578 static void xlr_config_translate_table(struct xlr_net_priv
*priv
)
582 int bkts
[32]; /* one bucket is assumed for each cpu */
583 int b1
, b2
, c1
, c2
, i
, j
, k
;
587 cpu_mask
= priv
->nd
->cpu_mask
;
589 pr_info("Using %s-based distribution\n",
590 (use_bkt
) ? "bucket" : "class");
592 for (i
= 0; i
< 32; i
++) {
593 if ((1 << i
) & cpu_mask
) {
594 /* for each cpu, mark the 4+threadid bucket */
595 bkts
[j
] = ((i
/ 4) * 8) + (i
% 4);
600 /*configure the 128 * 9 Translation table to send to available buckets*/
604 for (i
= 0; i
< 64; i
++) {
606 * On use_bkt set the b0, b1 are used, else
607 * the 4 classes are used, here implemented
608 * a logic to distribute the packets to the
609 * buckets equally or based on the class
617 val
= ((c1
<< 23) | (b1
<< 17) | (use_bkt
<< 16) |
618 (c2
<< 7) | (b2
<< 1) | (use_bkt
<< 0));
620 val
= ((c1
<< 23) | (b1
<< 17) | (use_bkt
<< 16) |
621 (c2
<< 7) | (b2
<< 1) | (use_bkt
<< 0));
622 dev_dbg(&priv
->ndev
->dev
, "Table[%d] b1=%d b2=%d c1=%d c2=%d\n",
624 xlr_nae_wreg(priv
->base_addr
, R_TRANSLATETABLE
+ i
, val
);
629 static void xlr_config_parser(struct xlr_net_priv
*priv
)
633 /* Mark it as ETHERNET type */
634 xlr_nae_wreg(priv
->base_addr
, R_L2TYPE_0
, 0x01);
636 /* Use 7bit CRChash for flow classification with 127 as CRC polynomial*/
637 xlr_nae_wreg(priv
->base_addr
, R_PARSERCONFIGREG
,
638 ((0x7f << 8) | (1 << 1)));
640 /* configure the parser : L2 Type is configured in the bootloader */
641 /* extract IP: src, dest protocol */
642 xlr_nae_wreg(priv
->base_addr
, R_L3CTABLE
,
643 (9 << 20) | (1 << 19) | (1 << 18) | (0x01 << 16) |
645 xlr_nae_wreg(priv
->base_addr
, R_L3CTABLE
+ 1,
646 (9 << 25) | (1 << 21) | (12 << 14) | (4 << 10) |
649 /* Configure to extract SRC port and Dest port for TCP and UDP pkts */
650 xlr_nae_wreg(priv
->base_addr
, R_L4CTABLE
, 6);
651 xlr_nae_wreg(priv
->base_addr
, R_L4CTABLE
+ 2, 17);
652 val
= ((0 << 21) | (2 << 17) | (2 << 11) | (2 << 7));
653 xlr_nae_wreg(priv
->base_addr
, R_L4CTABLE
+ 1, val
);
654 xlr_nae_wreg(priv
->base_addr
, R_L4CTABLE
+ 3, val
);
656 xlr_config_translate_table(priv
);
659 static int xlr_phy_write(u32
*base_addr
, int phy_addr
, int regnum
, u16 val
)
661 unsigned long timeout
, stoptime
, checktime
;
665 timeout
= msecs_to_jiffies(100);
666 stoptime
= jiffies
+ timeout
;
669 xlr_nae_wreg(base_addr
, R_MII_MGMT_ADDRESS
, (phy_addr
<< 8) | regnum
);
671 /* Write the data which starts the write cycle */
672 xlr_nae_wreg(base_addr
, R_MII_MGMT_WRITE_DATA
, (u32
) val
);
674 /* poll for the read cycle to complete */
677 if (xlr_nae_rdreg(base_addr
, R_MII_MGMT_INDICATORS
) == 0)
679 timedout
= time_after(checktime
, stoptime
);
682 pr_info("Phy device write err: device busy");
689 static int xlr_phy_read(u32
*base_addr
, int phy_addr
, int regnum
)
691 unsigned long timeout
, stoptime
, checktime
;
695 timeout
= msecs_to_jiffies(100);
696 stoptime
= jiffies
+ timeout
;
699 /* setup the phy reg to be used */
700 xlr_nae_wreg(base_addr
, R_MII_MGMT_ADDRESS
,
701 (phy_addr
<< 8) | (regnum
<< 0));
703 /* Issue the read command */
704 xlr_nae_wreg(base_addr
, R_MII_MGMT_COMMAND
,
705 (1 << O_MII_MGMT_COMMAND__rstat
));
708 /* poll for the read cycle to complete */
711 if (xlr_nae_rdreg(base_addr
, R_MII_MGMT_INDICATORS
) == 0)
713 timedout
= time_after(checktime
, stoptime
);
716 pr_info("Phy device read err: device busy");
720 /* clear the read cycle */
721 xlr_nae_wreg(base_addr
, R_MII_MGMT_COMMAND
, 0);
724 return xlr_nae_rdreg(base_addr
, R_MII_MGMT_STATUS
);
727 static int xlr_mii_write(struct mii_bus
*bus
, int phy_addr
, int regnum
, u16 val
)
729 struct xlr_net_priv
*priv
= bus
->priv
;
732 ret
= xlr_phy_write(priv
->mii_addr
, phy_addr
, regnum
, val
);
733 dev_dbg(&priv
->ndev
->dev
, "mii_write phy %d : %d <- %x [%x]\n",
734 phy_addr
, regnum
, val
, ret
);
738 static int xlr_mii_read(struct mii_bus
*bus
, int phy_addr
, int regnum
)
740 struct xlr_net_priv
*priv
= bus
->priv
;
743 ret
= xlr_phy_read(priv
->mii_addr
, phy_addr
, regnum
);
744 dev_dbg(&priv
->ndev
->dev
, "mii_read phy %d : %d [%x]\n",
745 phy_addr
, regnum
, ret
);
750 * XLR ports are RGMII. XLS ports are SGMII mostly except the port0,
751 * which can be configured either SGMII or RGMII, considered SGMII
752 * by default, if board setup to RGMII the port_type need to set
753 * accordingly.Serdes and PCS layer need to configured for SGMII
755 static void xlr_sgmii_init(struct xlr_net_priv
*priv
)
759 xlr_phy_write(priv
->serdes_addr
, 26, 0, 0x6DB0);
760 xlr_phy_write(priv
->serdes_addr
, 26, 1, 0xFFFF);
761 xlr_phy_write(priv
->serdes_addr
, 26, 2, 0xB6D0);
762 xlr_phy_write(priv
->serdes_addr
, 26, 3, 0x00FF);
763 xlr_phy_write(priv
->serdes_addr
, 26, 4, 0x0000);
764 xlr_phy_write(priv
->serdes_addr
, 26, 5, 0x0000);
765 xlr_phy_write(priv
->serdes_addr
, 26, 6, 0x0005);
766 xlr_phy_write(priv
->serdes_addr
, 26, 7, 0x0001);
767 xlr_phy_write(priv
->serdes_addr
, 26, 8, 0x0000);
768 xlr_phy_write(priv
->serdes_addr
, 26, 9, 0x0000);
769 xlr_phy_write(priv
->serdes_addr
, 26, 10, 0x0000);
771 /* program GPIO values for serdes init parameters */
772 xlr_nae_wreg(priv
->gpio_addr
, 0x20, 0x7e6802);
773 xlr_nae_wreg(priv
->gpio_addr
, 0x10, 0x7104);
775 xlr_nae_wreg(priv
->gpio_addr
, 0x22, 0x7e6802);
776 xlr_nae_wreg(priv
->gpio_addr
, 0x21, 0x7104);
778 /* enable autoneg - more magic */
779 phy
= priv
->port_id
% 4 + 27;
780 xlr_phy_write(priv
->pcs_addr
, phy
, 0, 0x1000);
781 xlr_phy_write(priv
->pcs_addr
, phy
, 0, 0x0200);
784 void xlr_set_gmac_speed(struct xlr_net_priv
*priv
)
786 struct phy_device
*phydev
= priv
->mii_bus
->phy_map
[priv
->phy_addr
];
789 if (phydev
->interface
== PHY_INTERFACE_MODE_SGMII
)
790 xlr_sgmii_init(priv
);
792 if (phydev
->speed
!= priv
->phy_speed
) {
793 pr_info("change %d to %d\n", priv
->phy_speed
, phydev
->speed
);
794 speed
= phydev
->speed
;
795 if (speed
== SPEED_1000
) {
796 /* Set interface to Byte mode */
797 xlr_nae_wreg(priv
->base_addr
, R_MAC_CONFIG_2
, 0x7217);
798 priv
->phy_speed
= speed
;
799 } else if (speed
== SPEED_100
|| speed
== SPEED_10
) {
800 /* Set interface to Nibble mode */
801 xlr_nae_wreg(priv
->base_addr
, R_MAC_CONFIG_2
, 0x7117);
802 priv
->phy_speed
= speed
;
804 /* Set SGMII speed in Interface controll reg */
805 if (phydev
->interface
== PHY_INTERFACE_MODE_SGMII
) {
806 if (speed
== SPEED_10
)
807 xlr_nae_wreg(priv
->base_addr
,
808 R_INTERFACE_CONTROL
, SGMII_SPEED_10
);
809 if (speed
== SPEED_100
)
810 xlr_nae_wreg(priv
->base_addr
,
811 R_INTERFACE_CONTROL
, SGMII_SPEED_100
);
812 if (speed
== SPEED_1000
)
813 xlr_nae_wreg(priv
->base_addr
,
814 R_INTERFACE_CONTROL
, SGMII_SPEED_1000
);
816 if (speed
== SPEED_10
)
817 xlr_nae_wreg(priv
->base_addr
, R_CORECONTROL
, 0x2);
818 if (speed
== SPEED_100
)
819 xlr_nae_wreg(priv
->base_addr
, R_CORECONTROL
, 0x1);
820 if (speed
== SPEED_1000
)
821 xlr_nae_wreg(priv
->base_addr
, R_CORECONTROL
, 0x0);
823 pr_info("gmac%d : %dMbps\n", priv
->port_id
, priv
->phy_speed
);
826 static void xlr_gmac_link_adjust(struct net_device
*ndev
)
828 struct xlr_net_priv
*priv
= netdev_priv(ndev
);
829 struct phy_device
*phydev
= priv
->mii_bus
->phy_map
[priv
->phy_addr
];
832 intreg
= xlr_nae_rdreg(priv
->base_addr
, R_INTREG
);
834 if (phydev
->speed
!= priv
->phy_speed
) {
835 pr_info("gmac%d : Link up\n", priv
->port_id
);
836 xlr_set_gmac_speed(priv
);
839 pr_info("gmac%d : Link down\n", priv
->port_id
);
840 xlr_set_gmac_speed(priv
);
844 static int xlr_mii_probe(struct xlr_net_priv
*priv
)
846 struct phy_device
*phydev
= priv
->mii_bus
->phy_map
[priv
->phy_addr
];
849 pr_err("no PHY found on phy_addr %d\n", priv
->phy_addr
);
853 /* Attach MAC to PHY */
854 phydev
= phy_connect(priv
->ndev
, dev_name(&phydev
->dev
),
855 &xlr_gmac_link_adjust
, priv
->nd
->phy_interface
);
857 if (IS_ERR(phydev
)) {
858 pr_err("could not attach PHY\n");
859 return PTR_ERR(phydev
);
861 phydev
->supported
&= (ADVERTISED_10baseT_Full
862 | ADVERTISED_10baseT_Half
863 | ADVERTISED_100baseT_Full
864 | ADVERTISED_100baseT_Half
865 | ADVERTISED_1000baseT_Full
869 phydev
->advertising
= phydev
->supported
;
870 pr_info("attached PHY driver [%s] (mii_bus:phy_addr=%s\n",
871 phydev
->drv
->name
, dev_name(&phydev
->dev
));
875 static int xlr_setup_mdio(struct xlr_net_priv
*priv
,
876 struct platform_device
*pdev
)
880 priv
->phy_addr
= priv
->nd
->phy_addr
;
881 priv
->mii_bus
= mdiobus_alloc();
882 if (!priv
->mii_bus
) {
883 pr_err("mdiobus alloc failed\n");
887 priv
->mii_bus
->priv
= priv
;
888 priv
->mii_bus
->name
= "xlr-mdio";
889 snprintf(priv
->mii_bus
->id
, MII_BUS_ID_SIZE
, "%s-%d",
890 priv
->mii_bus
->name
, priv
->port_id
);
891 priv
->mii_bus
->read
= xlr_mii_read
;
892 priv
->mii_bus
->write
= xlr_mii_write
;
893 priv
->mii_bus
->parent
= &pdev
->dev
;
894 priv
->mii_bus
->irq
= kmalloc(sizeof(int)*PHY_MAX_ADDR
, GFP_KERNEL
);
895 priv
->mii_bus
->irq
[priv
->phy_addr
] = priv
->ndev
->irq
;
897 /* Scan only the enabled address */
898 priv
->mii_bus
->phy_mask
= ~(1 << priv
->phy_addr
);
900 /* setting clock divisor to 54 */
901 xlr_nae_wreg(priv
->base_addr
, R_MII_MGMT_CONFIG
, 0x7);
903 err
= mdiobus_register(priv
->mii_bus
);
905 mdiobus_free(priv
->mii_bus
);
906 pr_err("mdio bus registration failed\n");
910 pr_info("Registered mdio bus id : %s\n", priv
->mii_bus
->id
);
911 err
= xlr_mii_probe(priv
);
913 mdiobus_free(priv
->mii_bus
);
919 static void xlr_port_enable(struct xlr_net_priv
*priv
)
921 u32 prid
= (read_c0_prid() & 0xf000);
923 /* Setup MAC_CONFIG reg if (xls & rgmii) */
924 if ((prid
== 0x8000 || prid
== 0x4000 || prid
== 0xc000) &&
925 priv
->nd
->phy_interface
== PHY_INTERFACE_MODE_RGMII
)
926 xlr_reg_update(priv
->base_addr
, R_RX_CONTROL
,
927 (1 << O_RX_CONTROL__RGMII
), (1 << O_RX_CONTROL__RGMII
));
930 xlr_reg_update(priv
->base_addr
, R_MAC_CONFIG_1
,
931 ((1 << O_MAC_CONFIG_1__rxen
) | (1 << O_MAC_CONFIG_1__txen
) |
932 (1 << O_MAC_CONFIG_1__rxfc
) | (1 << O_MAC_CONFIG_1__txfc
)),
933 ((1 << O_MAC_CONFIG_1__rxen
) | (1 << O_MAC_CONFIG_1__txen
) |
934 (1 << O_MAC_CONFIG_1__rxfc
) | (1 << O_MAC_CONFIG_1__txfc
)));
936 /* Setup tx control reg */
937 xlr_reg_update(priv
->base_addr
, R_TX_CONTROL
,
938 ((1 << O_TX_CONTROL__TxEnable
) |
939 (512 << O_TX_CONTROL__TxThreshold
)), 0x3fff);
941 /* Setup rx control reg */
942 xlr_reg_update(priv
->base_addr
, R_RX_CONTROL
,
943 1 << O_RX_CONTROL__RxEnable
, 1 << O_RX_CONTROL__RxEnable
);
946 static void xlr_port_disable(struct xlr_net_priv
*priv
)
948 /* Setup MAC_CONFIG reg */
950 xlr_reg_update(priv
->base_addr
, R_MAC_CONFIG_1
,
951 ((1 << O_MAC_CONFIG_1__rxen
) | (1 << O_MAC_CONFIG_1__txen
) |
952 (1 << O_MAC_CONFIG_1__rxfc
) | (1 << O_MAC_CONFIG_1__txfc
)),
955 /* Setup tx control reg */
956 xlr_reg_update(priv
->base_addr
, R_TX_CONTROL
,
957 ((1 << O_TX_CONTROL__TxEnable
) |
958 (512 << O_TX_CONTROL__TxThreshold
)), 0);
960 /* Setup rx control reg */
961 xlr_reg_update(priv
->base_addr
, R_RX_CONTROL
,
962 1 << O_RX_CONTROL__RxEnable
, 0);
965 /* Initialization of gmac */
966 static int xlr_gmac_init(struct xlr_net_priv
*priv
,
967 struct platform_device
*pdev
)
971 pr_info("Initializing the gmac%d\n", priv
->port_id
);
973 xlr_port_disable(priv
);
974 xlr_nae_wreg(priv
->base_addr
, R_DESC_PACK_CTRL
,
975 (1 << O_DESC_PACK_CTRL__MaxEntry
)
976 | (BYTE_OFFSET
<< O_DESC_PACK_CTRL__ByteOffset
)
977 | (1600 << O_DESC_PACK_CTRL__RegularSize
));
979 ret
= xlr_setup_mdio(priv
, pdev
);
982 xlr_port_enable(priv
);
984 /* Enable Full-duplex/1000Mbps/CRC */
985 xlr_nae_wreg(priv
->base_addr
, R_MAC_CONFIG_2
, 0x7217);
987 xlr_nae_wreg(priv
->base_addr
, R_CORECONTROL
, 0x02);
988 /* Setup Interrupt mask reg */
989 xlr_nae_wreg(priv
->base_addr
, R_INTMASK
,
990 (1 << O_INTMASK__TxIllegal
) |
991 (1 << O_INTMASK__MDInt
) |
992 (1 << O_INTMASK__TxFetchError
) |
993 (1 << O_INTMASK__P2PSpillEcc
) |
994 (1 << O_INTMASK__TagFull
) |
995 (1 << O_INTMASK__Underrun
) |
996 (1 << O_INTMASK__Abort
)
999 /* Clear all stats */
1000 xlr_reg_update(priv
->base_addr
, R_STATCTRL
,
1001 0, 1 << O_STATCTRL__ClrCnt
);
1002 xlr_reg_update(priv
->base_addr
, R_STATCTRL
,
1003 1 << O_STATCTRL__ClrCnt
, 1 << O_STATCTRL__ClrCnt
);
1007 static int xlr_net_probe(struct platform_device
*pdev
)
1009 struct xlr_net_priv
*priv
= NULL
;
1010 struct net_device
*ndev
;
1011 struct resource
*res
;
1015 ndev
= alloc_etherdev_mq(sizeof(struct xlr_net_priv
), 32);
1017 pr_err("Allocation of Ethernet device failed\n");
1021 priv
= netdev_priv(ndev
);
1024 priv
->port_id
= mac
;
1025 priv
->nd
= (struct xlr_net_data
*)pdev
->dev
.platform_data
;
1027 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
1029 pr_err("No memory resource for MAC %d\n", mac
);
1034 ndev
->base_addr
= (unsigned long) devm_ioremap_resource
1036 if (IS_ERR_VALUE(ndev
->base_addr
)) {
1037 err
= ndev
->base_addr
;
1041 res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, 0);
1043 pr_err("No irq resource for MAC %d\n", mac
);
1047 ndev
->irq
= res
->start
;
1049 priv
->mii_addr
= priv
->nd
->mii_addr
;
1050 priv
->serdes_addr
= priv
->nd
->serdes_addr
;
1051 priv
->pcs_addr
= priv
->nd
->pcs_addr
;
1052 priv
->gpio_addr
= priv
->nd
->gpio_addr
;
1053 priv
->base_addr
= (u32
*) ndev
->base_addr
;
1055 mac_to_ndev
[mac
] = ndev
;
1056 ndev
->netdev_ops
= &xlr_netdev_ops
;
1057 ndev
->watchdog_timeo
= HZ
;
1059 /* Setup Mac address and Rx mode */
1060 eth_hw_addr_random(ndev
);
1061 xlr_hw_set_mac_addr(ndev
);
1062 xlr_set_rx_mode(ndev
);
1064 priv
->num_rx_desc
+= MAX_NUM_DESC_SPILL
;
1065 SET_ETHTOOL_OPS(ndev
, &xlr_ethtool_ops
);
1066 SET_NETDEV_DEV(ndev
, &pdev
->dev
);
1068 /* Common registers, do one time initialization */
1069 if (mac
== 0 || mac
== 4) {
1070 xlr_config_fifo_spill_area(priv
);
1071 /* Configure PDE to Round-Robin pkt distribution */
1072 xlr_config_pde(priv
);
1073 xlr_config_parser(priv
);
1075 /* Call init with respect to port */
1076 if (strcmp(res
->name
, "gmac") == 0) {
1077 err
= xlr_gmac_init(priv
, pdev
);
1079 pr_err("gmac%d init failed\n", mac
);
1084 if (mac
== 0 || mac
== 4)
1085 xlr_config_common(priv
);
1087 err
= register_netdev(ndev
);
1090 platform_set_drvdata(pdev
, priv
);
1094 mdiobus_free(priv
->mii_bus
);
1100 static int xlr_net_remove(struct platform_device
*pdev
)
1102 struct xlr_net_priv
*priv
= platform_get_drvdata(pdev
);
1103 unregister_netdev(priv
->ndev
);
1104 mdiobus_unregister(priv
->mii_bus
);
1105 mdiobus_free(priv
->mii_bus
);
1106 free_netdev(priv
->ndev
);
1110 static struct platform_driver xlr_net_driver
= {
1111 .probe
= xlr_net_probe
,
1112 .remove
= xlr_net_remove
,
1115 .owner
= THIS_MODULE
,
1119 module_platform_driver(xlr_net_driver
);
1121 MODULE_AUTHOR("Ganesan Ramalingam <ganesanr@broadcom.com>");
1122 MODULE_DESCRIPTION("Ethernet driver for Netlogic XLR/XLS");
1123 MODULE_LICENSE("Dual BSD/GPL");
1124 MODULE_ALIAS("platform:xlr-net");