1 // SPDX-License-Identifier: GPL-2.0-only
3 * Broadcom BCM7xxx System Port Ethernet MAC driver
5 * Copyright (C) 2014 Broadcom Corporation
8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
10 #include <linux/init.h>
11 #include <linux/interrupt.h>
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/netdevice.h>
15 #include <linux/etherdevice.h>
16 #include <linux/platform_device.h>
18 #include <linux/of_net.h>
19 #include <linux/of_mdio.h>
20 #include <linux/phy.h>
21 #include <linux/phy_fixed.h>
26 #include "bcmsysport.h"
28 /* I/O accessors register helpers */
29 #define BCM_SYSPORT_IO_MACRO(name, offset) \
30 static inline u32 name##_readl(struct bcm_sysport_priv *priv, u32 off) \
32 u32 reg = readl_relaxed(priv->base + offset + off); \
35 static inline void name##_writel(struct bcm_sysport_priv *priv, \
38 writel_relaxed(val, priv->base + offset + off); \
41 BCM_SYSPORT_IO_MACRO(intrl2_0, SYS_PORT_INTRL2_0_OFFSET);
42 BCM_SYSPORT_IO_MACRO(intrl2_1
, SYS_PORT_INTRL2_1_OFFSET
);
43 BCM_SYSPORT_IO_MACRO(umac
, SYS_PORT_UMAC_OFFSET
);
44 BCM_SYSPORT_IO_MACRO(gib
, SYS_PORT_GIB_OFFSET
);
45 BCM_SYSPORT_IO_MACRO(tdma
, SYS_PORT_TDMA_OFFSET
);
46 BCM_SYSPORT_IO_MACRO(rxchk
, SYS_PORT_RXCHK_OFFSET
);
47 BCM_SYSPORT_IO_MACRO(txchk
, SYS_PORT_TXCHK_OFFSET
);
48 BCM_SYSPORT_IO_MACRO(rbuf
, SYS_PORT_RBUF_OFFSET
);
49 BCM_SYSPORT_IO_MACRO(tbuf
, SYS_PORT_TBUF_OFFSET
);
50 BCM_SYSPORT_IO_MACRO(topctrl
, SYS_PORT_TOPCTRL_OFFSET
);
52 /* On SYSTEMPORT Lite, any register after RDMA_STATUS has the exact
53 * same layout, except it has been moved by 4 bytes up, *sigh*
55 static inline u32
rdma_readl(struct bcm_sysport_priv
*priv
, u32 off
)
57 if (priv
->is_lite
&& off
>= RDMA_STATUS
)
59 return readl_relaxed(priv
->base
+ SYS_PORT_RDMA_OFFSET
+ off
);
62 static inline void rdma_writel(struct bcm_sysport_priv
*priv
, u32 val
, u32 off
)
64 if (priv
->is_lite
&& off
>= RDMA_STATUS
)
66 writel_relaxed(val
, priv
->base
+ SYS_PORT_RDMA_OFFSET
+ off
);
69 static inline u32
tdma_control_bit(struct bcm_sysport_priv
*priv
, u32 bit
)
81 /* L2-interrupt masking/unmasking helpers, does automatic saving of the applied
82 * mask in a software copy to avoid CPU_MASK_STATUS reads in hot-paths.
84 #define BCM_SYSPORT_INTR_L2(which) \
85 static inline void intrl2_##which##_mask_clear(struct bcm_sysport_priv *priv, \
88 priv->irq##which##_mask &= ~(mask); \
89 intrl2_##which##_writel(priv, mask, INTRL2_CPU_MASK_CLEAR); \
91 static inline void intrl2_##which##_mask_set(struct bcm_sysport_priv *priv, \
94 intrl2_## which##_writel(priv, mask, INTRL2_CPU_MASK_SET); \
95 priv->irq##which##_mask |= (mask); \
98 BCM_SYSPORT_INTR_L2(0)
99 BCM_SYSPORT_INTR_L2(1)
101 /* Register accesses to GISB/RBUS registers are expensive (few hundred
102 * nanoseconds), so keep the check for 64-bits explicit here to save
103 * one register write per-packet on 32-bits platforms.
105 static inline void dma_desc_set_addr(struct bcm_sysport_priv
*priv
,
109 #ifdef CONFIG_PHYS_ADDR_T_64BIT
110 writel_relaxed(upper_32_bits(addr
) & DESC_ADDR_HI_MASK
,
111 d
+ DESC_ADDR_HI_STATUS_LEN
);
113 writel_relaxed(lower_32_bits(addr
), d
+ DESC_ADDR_LO
);
116 /* Ethtool operations */
117 static void bcm_sysport_set_rx_csum(struct net_device
*dev
,
118 netdev_features_t wanted
)
120 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
123 priv
->rx_chk_en
= !!(wanted
& NETIF_F_RXCSUM
);
124 reg
= rxchk_readl(priv
, RXCHK_CONTROL
);
125 /* Clear L2 header checks, which would prevent BPDUs
126 * from being received.
128 reg
&= ~RXCHK_L2_HDR_DIS
;
134 /* If UniMAC forwards CRC, we need to skip over it to get
135 * a valid CHK bit to be set in the per-packet status word
137 if (priv
->rx_chk_en
&& priv
->crc_fwd
)
138 reg
|= RXCHK_SKIP_FCS
;
140 reg
&= ~RXCHK_SKIP_FCS
;
142 /* If Broadcom tags are enabled (e.g: using a switch), make
143 * sure we tell the RXCHK hardware to expect a 4-bytes Broadcom
144 * tag after the Ethernet MAC Source Address.
146 if (netdev_uses_dsa(dev
))
147 reg
|= RXCHK_BRCM_TAG_EN
;
149 reg
&= ~RXCHK_BRCM_TAG_EN
;
151 rxchk_writel(priv
, reg
, RXCHK_CONTROL
);
154 static void bcm_sysport_set_tx_csum(struct net_device
*dev
,
155 netdev_features_t wanted
)
157 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
160 /* Hardware transmit checksum requires us to enable the Transmit status
161 * block prepended to the packet contents
163 priv
->tsb_en
= !!(wanted
& (NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
));
164 reg
= tdma_readl(priv
, TDMA_CONTROL
);
166 reg
|= tdma_control_bit(priv
, TSB_EN
);
168 reg
&= ~tdma_control_bit(priv
, TSB_EN
);
169 tdma_writel(priv
, reg
, TDMA_CONTROL
);
172 static int bcm_sysport_set_features(struct net_device
*dev
,
173 netdev_features_t features
)
175 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
177 /* Read CRC forward */
179 priv
->crc_fwd
= !!(umac_readl(priv
, UMAC_CMD
) & CMD_CRC_FWD
);
181 priv
->crc_fwd
= !((gib_readl(priv
, GIB_CONTROL
) &
182 GIB_FCS_STRIP
) >> GIB_FCS_STRIP_SHIFT
);
184 bcm_sysport_set_rx_csum(dev
, features
);
185 bcm_sysport_set_tx_csum(dev
, features
);
190 /* Hardware counters must be kept in sync because the order/offset
191 * is important here (order in structure declaration = order in hardware)
193 static const struct bcm_sysport_stats bcm_sysport_gstrings_stats
[] = {
195 STAT_NETDEV64(rx_packets
),
196 STAT_NETDEV64(tx_packets
),
197 STAT_NETDEV64(rx_bytes
),
198 STAT_NETDEV64(tx_bytes
),
199 STAT_NETDEV(rx_errors
),
200 STAT_NETDEV(tx_errors
),
201 STAT_NETDEV(rx_dropped
),
202 STAT_NETDEV(tx_dropped
),
203 STAT_NETDEV(multicast
),
204 /* UniMAC RSV counters */
205 STAT_MIB_RX("rx_64_octets", mib
.rx
.pkt_cnt
.cnt_64
),
206 STAT_MIB_RX("rx_65_127_oct", mib
.rx
.pkt_cnt
.cnt_127
),
207 STAT_MIB_RX("rx_128_255_oct", mib
.rx
.pkt_cnt
.cnt_255
),
208 STAT_MIB_RX("rx_256_511_oct", mib
.rx
.pkt_cnt
.cnt_511
),
209 STAT_MIB_RX("rx_512_1023_oct", mib
.rx
.pkt_cnt
.cnt_1023
),
210 STAT_MIB_RX("rx_1024_1518_oct", mib
.rx
.pkt_cnt
.cnt_1518
),
211 STAT_MIB_RX("rx_vlan_1519_1522_oct", mib
.rx
.pkt_cnt
.cnt_mgv
),
212 STAT_MIB_RX("rx_1522_2047_oct", mib
.rx
.pkt_cnt
.cnt_2047
),
213 STAT_MIB_RX("rx_2048_4095_oct", mib
.rx
.pkt_cnt
.cnt_4095
),
214 STAT_MIB_RX("rx_4096_9216_oct", mib
.rx
.pkt_cnt
.cnt_9216
),
215 STAT_MIB_RX("rx_pkts", mib
.rx
.pkt
),
216 STAT_MIB_RX("rx_bytes", mib
.rx
.bytes
),
217 STAT_MIB_RX("rx_multicast", mib
.rx
.mca
),
218 STAT_MIB_RX("rx_broadcast", mib
.rx
.bca
),
219 STAT_MIB_RX("rx_fcs", mib
.rx
.fcs
),
220 STAT_MIB_RX("rx_control", mib
.rx
.cf
),
221 STAT_MIB_RX("rx_pause", mib
.rx
.pf
),
222 STAT_MIB_RX("rx_unknown", mib
.rx
.uo
),
223 STAT_MIB_RX("rx_align", mib
.rx
.aln
),
224 STAT_MIB_RX("rx_outrange", mib
.rx
.flr
),
225 STAT_MIB_RX("rx_code", mib
.rx
.cde
),
226 STAT_MIB_RX("rx_carrier", mib
.rx
.fcr
),
227 STAT_MIB_RX("rx_oversize", mib
.rx
.ovr
),
228 STAT_MIB_RX("rx_jabber", mib
.rx
.jbr
),
229 STAT_MIB_RX("rx_mtu_err", mib
.rx
.mtue
),
230 STAT_MIB_RX("rx_good_pkts", mib
.rx
.pok
),
231 STAT_MIB_RX("rx_unicast", mib
.rx
.uc
),
232 STAT_MIB_RX("rx_ppp", mib
.rx
.ppp
),
233 STAT_MIB_RX("rx_crc", mib
.rx
.rcrc
),
234 /* UniMAC TSV counters */
235 STAT_MIB_TX("tx_64_octets", mib
.tx
.pkt_cnt
.cnt_64
),
236 STAT_MIB_TX("tx_65_127_oct", mib
.tx
.pkt_cnt
.cnt_127
),
237 STAT_MIB_TX("tx_128_255_oct", mib
.tx
.pkt_cnt
.cnt_255
),
238 STAT_MIB_TX("tx_256_511_oct", mib
.tx
.pkt_cnt
.cnt_511
),
239 STAT_MIB_TX("tx_512_1023_oct", mib
.tx
.pkt_cnt
.cnt_1023
),
240 STAT_MIB_TX("tx_1024_1518_oct", mib
.tx
.pkt_cnt
.cnt_1518
),
241 STAT_MIB_TX("tx_vlan_1519_1522_oct", mib
.tx
.pkt_cnt
.cnt_mgv
),
242 STAT_MIB_TX("tx_1522_2047_oct", mib
.tx
.pkt_cnt
.cnt_2047
),
243 STAT_MIB_TX("tx_2048_4095_oct", mib
.tx
.pkt_cnt
.cnt_4095
),
244 STAT_MIB_TX("tx_4096_9216_oct", mib
.tx
.pkt_cnt
.cnt_9216
),
245 STAT_MIB_TX("tx_pkts", mib
.tx
.pkts
),
246 STAT_MIB_TX("tx_multicast", mib
.tx
.mca
),
247 STAT_MIB_TX("tx_broadcast", mib
.tx
.bca
),
248 STAT_MIB_TX("tx_pause", mib
.tx
.pf
),
249 STAT_MIB_TX("tx_control", mib
.tx
.cf
),
250 STAT_MIB_TX("tx_fcs_err", mib
.tx
.fcs
),
251 STAT_MIB_TX("tx_oversize", mib
.tx
.ovr
),
252 STAT_MIB_TX("tx_defer", mib
.tx
.drf
),
253 STAT_MIB_TX("tx_excess_defer", mib
.tx
.edf
),
254 STAT_MIB_TX("tx_single_col", mib
.tx
.scl
),
255 STAT_MIB_TX("tx_multi_col", mib
.tx
.mcl
),
256 STAT_MIB_TX("tx_late_col", mib
.tx
.lcl
),
257 STAT_MIB_TX("tx_excess_col", mib
.tx
.ecl
),
258 STAT_MIB_TX("tx_frags", mib
.tx
.frg
),
259 STAT_MIB_TX("tx_total_col", mib
.tx
.ncl
),
260 STAT_MIB_TX("tx_jabber", mib
.tx
.jbr
),
261 STAT_MIB_TX("tx_bytes", mib
.tx
.bytes
),
262 STAT_MIB_TX("tx_good_pkts", mib
.tx
.pok
),
263 STAT_MIB_TX("tx_unicast", mib
.tx
.uc
),
264 /* UniMAC RUNT counters */
265 STAT_RUNT("rx_runt_pkts", mib
.rx_runt_cnt
),
266 STAT_RUNT("rx_runt_valid_fcs", mib
.rx_runt_fcs
),
267 STAT_RUNT("rx_runt_inval_fcs_align", mib
.rx_runt_fcs_align
),
268 STAT_RUNT("rx_runt_bytes", mib
.rx_runt_bytes
),
269 /* RXCHK misc statistics */
270 STAT_RXCHK("rxchk_bad_csum", mib
.rxchk_bad_csum
, RXCHK_BAD_CSUM_CNTR
),
271 STAT_RXCHK("rxchk_other_pkt_disc", mib
.rxchk_other_pkt_disc
,
272 RXCHK_OTHER_DISC_CNTR
),
273 /* RBUF misc statistics */
274 STAT_RBUF("rbuf_ovflow_cnt", mib
.rbuf_ovflow_cnt
, RBUF_OVFL_DISC_CNTR
),
275 STAT_RBUF("rbuf_err_cnt", mib
.rbuf_err_cnt
, RBUF_ERR_PKT_CNTR
),
276 STAT_MIB_SOFT("alloc_rx_buff_failed", mib
.alloc_rx_buff_failed
),
277 STAT_MIB_SOFT("rx_dma_failed", mib
.rx_dma_failed
),
278 STAT_MIB_SOFT("tx_dma_failed", mib
.tx_dma_failed
),
279 STAT_MIB_SOFT("tx_realloc_tsb", mib
.tx_realloc_tsb
),
280 STAT_MIB_SOFT("tx_realloc_tsb_failed", mib
.tx_realloc_tsb_failed
),
281 /* Per TX-queue statistics are dynamically appended */
284 #define BCM_SYSPORT_STATS_LEN ARRAY_SIZE(bcm_sysport_gstrings_stats)
286 static void bcm_sysport_get_drvinfo(struct net_device
*dev
,
287 struct ethtool_drvinfo
*info
)
289 strlcpy(info
->driver
, KBUILD_MODNAME
, sizeof(info
->driver
));
290 strlcpy(info
->bus_info
, "platform", sizeof(info
->bus_info
));
293 static u32
bcm_sysport_get_msglvl(struct net_device
*dev
)
295 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
297 return priv
->msg_enable
;
300 static void bcm_sysport_set_msglvl(struct net_device
*dev
, u32 enable
)
302 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
304 priv
->msg_enable
= enable
;
307 static inline bool bcm_sysport_lite_stat_valid(enum bcm_sysport_stat_type type
)
310 case BCM_SYSPORT_STAT_NETDEV
:
311 case BCM_SYSPORT_STAT_NETDEV64
:
312 case BCM_SYSPORT_STAT_RXCHK
:
313 case BCM_SYSPORT_STAT_RBUF
:
314 case BCM_SYSPORT_STAT_SOFT
:
321 static int bcm_sysport_get_sset_count(struct net_device
*dev
, int string_set
)
323 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
324 const struct bcm_sysport_stats
*s
;
327 switch (string_set
) {
329 for (i
= 0, j
= 0; i
< BCM_SYSPORT_STATS_LEN
; i
++) {
330 s
= &bcm_sysport_gstrings_stats
[i
];
332 !bcm_sysport_lite_stat_valid(s
->type
))
336 /* Include per-queue statistics */
337 return j
+ dev
->num_tx_queues
* NUM_SYSPORT_TXQ_STAT
;
343 static void bcm_sysport_get_strings(struct net_device
*dev
,
344 u32 stringset
, u8
*data
)
346 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
347 const struct bcm_sysport_stats
*s
;
353 for (i
= 0, j
= 0; i
< BCM_SYSPORT_STATS_LEN
; i
++) {
354 s
= &bcm_sysport_gstrings_stats
[i
];
356 !bcm_sysport_lite_stat_valid(s
->type
))
359 memcpy(data
+ j
* ETH_GSTRING_LEN
, s
->stat_string
,
364 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
365 snprintf(buf
, sizeof(buf
), "txq%d_packets", i
);
366 memcpy(data
+ j
* ETH_GSTRING_LEN
, buf
,
370 snprintf(buf
, sizeof(buf
), "txq%d_bytes", i
);
371 memcpy(data
+ j
* ETH_GSTRING_LEN
, buf
,
381 static void bcm_sysport_update_mib_counters(struct bcm_sysport_priv
*priv
)
385 for (i
= 0; i
< BCM_SYSPORT_STATS_LEN
; i
++) {
386 const struct bcm_sysport_stats
*s
;
391 s
= &bcm_sysport_gstrings_stats
[i
];
393 case BCM_SYSPORT_STAT_NETDEV
:
394 case BCM_SYSPORT_STAT_NETDEV64
:
395 case BCM_SYSPORT_STAT_SOFT
:
397 case BCM_SYSPORT_STAT_MIB_RX
:
398 case BCM_SYSPORT_STAT_MIB_TX
:
399 case BCM_SYSPORT_STAT_RUNT
:
403 if (s
->type
!= BCM_SYSPORT_STAT_MIB_RX
)
404 offset
= UMAC_MIB_STAT_OFFSET
;
405 val
= umac_readl(priv
, UMAC_MIB_START
+ j
+ offset
);
407 case BCM_SYSPORT_STAT_RXCHK
:
408 val
= rxchk_readl(priv
, s
->reg_offset
);
410 rxchk_writel(priv
, 0, s
->reg_offset
);
412 case BCM_SYSPORT_STAT_RBUF
:
413 val
= rbuf_readl(priv
, s
->reg_offset
);
415 rbuf_writel(priv
, 0, s
->reg_offset
);
420 p
= (char *)priv
+ s
->stat_offset
;
424 netif_dbg(priv
, hw
, priv
->netdev
, "updated MIB counters\n");
427 static void bcm_sysport_update_tx_stats(struct bcm_sysport_priv
*priv
,
428 u64
*tx_bytes
, u64
*tx_packets
)
430 struct bcm_sysport_tx_ring
*ring
;
431 u64 bytes
= 0, packets
= 0;
435 for (q
= 0; q
< priv
->netdev
->num_tx_queues
; q
++) {
436 ring
= &priv
->tx_rings
[q
];
438 start
= u64_stats_fetch_begin_irq(&priv
->syncp
);
440 packets
= ring
->packets
;
441 } while (u64_stats_fetch_retry_irq(&priv
->syncp
, start
));
444 *tx_packets
+= packets
;
448 static void bcm_sysport_get_stats(struct net_device
*dev
,
449 struct ethtool_stats
*stats
, u64
*data
)
451 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
452 struct bcm_sysport_stats64
*stats64
= &priv
->stats64
;
453 struct u64_stats_sync
*syncp
= &priv
->syncp
;
454 struct bcm_sysport_tx_ring
*ring
;
455 u64 tx_bytes
= 0, tx_packets
= 0;
459 if (netif_running(dev
)) {
460 bcm_sysport_update_mib_counters(priv
);
461 bcm_sysport_update_tx_stats(priv
, &tx_bytes
, &tx_packets
);
462 stats64
->tx_bytes
= tx_bytes
;
463 stats64
->tx_packets
= tx_packets
;
466 for (i
= 0, j
= 0; i
< BCM_SYSPORT_STATS_LEN
; i
++) {
467 const struct bcm_sysport_stats
*s
;
470 s
= &bcm_sysport_gstrings_stats
[i
];
471 if (s
->type
== BCM_SYSPORT_STAT_NETDEV
)
472 p
= (char *)&dev
->stats
;
473 else if (s
->type
== BCM_SYSPORT_STAT_NETDEV64
)
478 if (priv
->is_lite
&& !bcm_sysport_lite_stat_valid(s
->type
))
482 if (s
->stat_sizeof
== sizeof(u64
) &&
483 s
->type
== BCM_SYSPORT_STAT_NETDEV64
) {
485 start
= u64_stats_fetch_begin_irq(syncp
);
487 } while (u64_stats_fetch_retry_irq(syncp
, start
));
493 /* For SYSTEMPORT Lite since we have holes in our statistics, j would
494 * be equal to BCM_SYSPORT_STATS_LEN at the end of the loop, but it
495 * needs to point to how many total statistics we have minus the
496 * number of per TX queue statistics
498 j
= bcm_sysport_get_sset_count(dev
, ETH_SS_STATS
) -
499 dev
->num_tx_queues
* NUM_SYSPORT_TXQ_STAT
;
501 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
502 ring
= &priv
->tx_rings
[i
];
503 data
[j
] = ring
->packets
;
505 data
[j
] = ring
->bytes
;
510 static void bcm_sysport_get_wol(struct net_device
*dev
,
511 struct ethtool_wolinfo
*wol
)
513 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
515 wol
->supported
= WAKE_MAGIC
| WAKE_MAGICSECURE
| WAKE_FILTER
;
516 wol
->wolopts
= priv
->wolopts
;
518 if (!(priv
->wolopts
& WAKE_MAGICSECURE
))
521 memcpy(wol
->sopass
, priv
->sopass
, sizeof(priv
->sopass
));
524 static int bcm_sysport_set_wol(struct net_device
*dev
,
525 struct ethtool_wolinfo
*wol
)
527 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
528 struct device
*kdev
= &priv
->pdev
->dev
;
529 u32 supported
= WAKE_MAGIC
| WAKE_MAGICSECURE
| WAKE_FILTER
;
531 if (!device_can_wakeup(kdev
))
534 if (wol
->wolopts
& ~supported
)
537 if (wol
->wolopts
& WAKE_MAGICSECURE
)
538 memcpy(priv
->sopass
, wol
->sopass
, sizeof(priv
->sopass
));
540 /* Flag the device and relevant IRQ as wakeup capable */
542 device_set_wakeup_enable(kdev
, 1);
543 if (priv
->wol_irq_disabled
)
544 enable_irq_wake(priv
->wol_irq
);
545 priv
->wol_irq_disabled
= 0;
547 device_set_wakeup_enable(kdev
, 0);
548 /* Avoid unbalanced disable_irq_wake calls */
549 if (!priv
->wol_irq_disabled
)
550 disable_irq_wake(priv
->wol_irq
);
551 priv
->wol_irq_disabled
= 1;
554 priv
->wolopts
= wol
->wolopts
;
559 static void bcm_sysport_set_rx_coalesce(struct bcm_sysport_priv
*priv
,
564 reg
= rdma_readl(priv
, RDMA_MBDONE_INTR
);
565 reg
&= ~(RDMA_INTR_THRESH_MASK
|
566 RDMA_TIMEOUT_MASK
<< RDMA_TIMEOUT_SHIFT
);
568 reg
|= DIV_ROUND_UP(usecs
* 1000, 8192) << RDMA_TIMEOUT_SHIFT
;
569 rdma_writel(priv
, reg
, RDMA_MBDONE_INTR
);
572 static void bcm_sysport_set_tx_coalesce(struct bcm_sysport_tx_ring
*ring
,
573 struct ethtool_coalesce
*ec
)
575 struct bcm_sysport_priv
*priv
= ring
->priv
;
578 reg
= tdma_readl(priv
, TDMA_DESC_RING_INTR_CONTROL(ring
->index
));
579 reg
&= ~(RING_INTR_THRESH_MASK
|
580 RING_TIMEOUT_MASK
<< RING_TIMEOUT_SHIFT
);
581 reg
|= ec
->tx_max_coalesced_frames
;
582 reg
|= DIV_ROUND_UP(ec
->tx_coalesce_usecs
* 1000, 8192) <<
584 tdma_writel(priv
, reg
, TDMA_DESC_RING_INTR_CONTROL(ring
->index
));
587 static int bcm_sysport_get_coalesce(struct net_device
*dev
,
588 struct ethtool_coalesce
*ec
)
590 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
593 reg
= tdma_readl(priv
, TDMA_DESC_RING_INTR_CONTROL(0));
595 ec
->tx_coalesce_usecs
= (reg
>> RING_TIMEOUT_SHIFT
) * 8192 / 1000;
596 ec
->tx_max_coalesced_frames
= reg
& RING_INTR_THRESH_MASK
;
598 reg
= rdma_readl(priv
, RDMA_MBDONE_INTR
);
600 ec
->rx_coalesce_usecs
= (reg
>> RDMA_TIMEOUT_SHIFT
) * 8192 / 1000;
601 ec
->rx_max_coalesced_frames
= reg
& RDMA_INTR_THRESH_MASK
;
602 ec
->use_adaptive_rx_coalesce
= priv
->dim
.use_dim
;
607 static int bcm_sysport_set_coalesce(struct net_device
*dev
,
608 struct ethtool_coalesce
*ec
)
610 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
611 struct dim_cq_moder moder
;
615 /* Base system clock is 125Mhz, DMA timeout is this reference clock
616 * divided by 1024, which yield roughly 8.192 us, our maximum value has
617 * to fit in the RING_TIMEOUT_MASK (16 bits).
619 if (ec
->tx_max_coalesced_frames
> RING_INTR_THRESH_MASK
||
620 ec
->tx_coalesce_usecs
> (RING_TIMEOUT_MASK
* 8) + 1 ||
621 ec
->rx_max_coalesced_frames
> RDMA_INTR_THRESH_MASK
||
622 ec
->rx_coalesce_usecs
> (RDMA_TIMEOUT_MASK
* 8) + 1)
625 if ((ec
->tx_coalesce_usecs
== 0 && ec
->tx_max_coalesced_frames
== 0) ||
626 (ec
->rx_coalesce_usecs
== 0 && ec
->rx_max_coalesced_frames
== 0))
629 for (i
= 0; i
< dev
->num_tx_queues
; i
++)
630 bcm_sysport_set_tx_coalesce(&priv
->tx_rings
[i
], ec
);
632 priv
->rx_coalesce_usecs
= ec
->rx_coalesce_usecs
;
633 priv
->rx_max_coalesced_frames
= ec
->rx_max_coalesced_frames
;
634 usecs
= priv
->rx_coalesce_usecs
;
635 pkts
= priv
->rx_max_coalesced_frames
;
637 if (ec
->use_adaptive_rx_coalesce
&& !priv
->dim
.use_dim
) {
638 moder
= net_dim_get_def_rx_moderation(priv
->dim
.dim
.mode
);
643 priv
->dim
.use_dim
= ec
->use_adaptive_rx_coalesce
;
645 /* Apply desired coalescing parameters */
646 bcm_sysport_set_rx_coalesce(priv
, usecs
, pkts
);
651 static void bcm_sysport_free_cb(struct bcm_sysport_cb
*cb
)
653 dev_consume_skb_any(cb
->skb
);
655 dma_unmap_addr_set(cb
, dma_addr
, 0);
658 static struct sk_buff
*bcm_sysport_rx_refill(struct bcm_sysport_priv
*priv
,
659 struct bcm_sysport_cb
*cb
)
661 struct device
*kdev
= &priv
->pdev
->dev
;
662 struct net_device
*ndev
= priv
->netdev
;
663 struct sk_buff
*skb
, *rx_skb
;
666 /* Allocate a new SKB for a new packet */
667 skb
= __netdev_alloc_skb(priv
->netdev
, RX_BUF_LENGTH
,
668 GFP_ATOMIC
| __GFP_NOWARN
);
670 priv
->mib
.alloc_rx_buff_failed
++;
671 netif_err(priv
, rx_err
, ndev
, "SKB alloc failed\n");
675 mapping
= dma_map_single(kdev
, skb
->data
,
676 RX_BUF_LENGTH
, DMA_FROM_DEVICE
);
677 if (dma_mapping_error(kdev
, mapping
)) {
678 priv
->mib
.rx_dma_failed
++;
679 dev_kfree_skb_any(skb
);
680 netif_err(priv
, rx_err
, ndev
, "DMA mapping failure\n");
684 /* Grab the current SKB on the ring */
687 dma_unmap_single(kdev
, dma_unmap_addr(cb
, dma_addr
),
688 RX_BUF_LENGTH
, DMA_FROM_DEVICE
);
690 /* Put the new SKB on the ring */
692 dma_unmap_addr_set(cb
, dma_addr
, mapping
);
693 dma_desc_set_addr(priv
, cb
->bd_addr
, mapping
);
695 netif_dbg(priv
, rx_status
, ndev
, "RX refill\n");
697 /* Return the current SKB to the caller */
701 static int bcm_sysport_alloc_rx_bufs(struct bcm_sysport_priv
*priv
)
703 struct bcm_sysport_cb
*cb
;
707 for (i
= 0; i
< priv
->num_rx_bds
; i
++) {
708 cb
= &priv
->rx_cbs
[i
];
709 skb
= bcm_sysport_rx_refill(priv
, cb
);
718 /* Poll the hardware for up to budget packets to process */
719 static unsigned int bcm_sysport_desc_rx(struct bcm_sysport_priv
*priv
,
722 struct bcm_sysport_stats64
*stats64
= &priv
->stats64
;
723 struct net_device
*ndev
= priv
->netdev
;
724 unsigned int processed
= 0, to_process
;
725 unsigned int processed_bytes
= 0;
726 struct bcm_sysport_cb
*cb
;
728 unsigned int p_index
;
732 /* Clear status before servicing to reduce spurious interrupts */
733 intrl2_0_writel(priv
, INTRL2_0_RDMA_MBDONE
, INTRL2_CPU_CLEAR
);
735 /* Determine how much we should process since last call, SYSTEMPORT Lite
736 * groups the producer and consumer indexes into the same 32-bit
737 * which we access using RDMA_CONS_INDEX
740 p_index
= rdma_readl(priv
, RDMA_PROD_INDEX
);
742 p_index
= rdma_readl(priv
, RDMA_CONS_INDEX
);
743 p_index
&= RDMA_PROD_INDEX_MASK
;
745 to_process
= (p_index
- priv
->rx_c_index
) & RDMA_CONS_INDEX_MASK
;
747 netif_dbg(priv
, rx_status
, ndev
,
748 "p_index=%d rx_c_index=%d to_process=%d\n",
749 p_index
, priv
->rx_c_index
, to_process
);
751 while ((processed
< to_process
) && (processed
< budget
)) {
752 cb
= &priv
->rx_cbs
[priv
->rx_read_ptr
];
753 skb
= bcm_sysport_rx_refill(priv
, cb
);
756 /* We do not have a backing SKB, so we do not a corresponding
757 * DMA mapping for this incoming packet since
758 * bcm_sysport_rx_refill always either has both skb and mapping
761 if (unlikely(!skb
)) {
762 netif_err(priv
, rx_err
, ndev
, "out of memory!\n");
763 ndev
->stats
.rx_dropped
++;
764 ndev
->stats
.rx_errors
++;
768 /* Extract the Receive Status Block prepended */
769 rsb
= (struct bcm_rsb
*)skb
->data
;
770 len
= (rsb
->rx_status_len
>> DESC_LEN_SHIFT
) & DESC_LEN_MASK
;
771 status
= (rsb
->rx_status_len
>> DESC_STATUS_SHIFT
) &
774 netif_dbg(priv
, rx_status
, ndev
,
775 "p=%d, c=%d, rd_ptr=%d, len=%d, flag=0x%04x\n",
776 p_index
, priv
->rx_c_index
, priv
->rx_read_ptr
,
779 if (unlikely(len
> RX_BUF_LENGTH
)) {
780 netif_err(priv
, rx_status
, ndev
, "oversized packet\n");
781 ndev
->stats
.rx_length_errors
++;
782 ndev
->stats
.rx_errors
++;
783 dev_kfree_skb_any(skb
);
787 if (unlikely(!(status
& DESC_EOP
) || !(status
& DESC_SOP
))) {
788 netif_err(priv
, rx_status
, ndev
, "fragmented packet!\n");
789 ndev
->stats
.rx_dropped
++;
790 ndev
->stats
.rx_errors
++;
791 dev_kfree_skb_any(skb
);
795 if (unlikely(status
& (RX_STATUS_ERR
| RX_STATUS_OVFLOW
))) {
796 netif_err(priv
, rx_err
, ndev
, "error packet\n");
797 if (status
& RX_STATUS_OVFLOW
)
798 ndev
->stats
.rx_over_errors
++;
799 ndev
->stats
.rx_dropped
++;
800 ndev
->stats
.rx_errors
++;
801 dev_kfree_skb_any(skb
);
807 /* Hardware validated our checksum */
808 if (likely(status
& DESC_L4_CSUM
))
809 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
811 /* Hardware pre-pends packets with 2bytes before Ethernet
812 * header plus we have the Receive Status Block, strip off all
813 * of this from the SKB.
815 skb_pull(skb
, sizeof(*rsb
) + 2);
816 len
-= (sizeof(*rsb
) + 2);
817 processed_bytes
+= len
;
819 /* UniMAC may forward CRC */
821 skb_trim(skb
, len
- ETH_FCS_LEN
);
825 skb
->protocol
= eth_type_trans(skb
, ndev
);
826 ndev
->stats
.rx_packets
++;
827 ndev
->stats
.rx_bytes
+= len
;
828 u64_stats_update_begin(&priv
->syncp
);
829 stats64
->rx_packets
++;
830 stats64
->rx_bytes
+= len
;
831 u64_stats_update_end(&priv
->syncp
);
833 napi_gro_receive(&priv
->napi
, skb
);
838 if (priv
->rx_read_ptr
== priv
->num_rx_bds
)
839 priv
->rx_read_ptr
= 0;
842 priv
->dim
.packets
= processed
;
843 priv
->dim
.bytes
= processed_bytes
;
848 static void bcm_sysport_tx_reclaim_one(struct bcm_sysport_tx_ring
*ring
,
849 struct bcm_sysport_cb
*cb
,
850 unsigned int *bytes_compl
,
851 unsigned int *pkts_compl
)
853 struct bcm_sysport_priv
*priv
= ring
->priv
;
854 struct device
*kdev
= &priv
->pdev
->dev
;
857 *bytes_compl
+= cb
->skb
->len
;
858 dma_unmap_single(kdev
, dma_unmap_addr(cb
, dma_addr
),
859 dma_unmap_len(cb
, dma_len
),
862 bcm_sysport_free_cb(cb
);
864 } else if (dma_unmap_addr(cb
, dma_addr
)) {
865 *bytes_compl
+= dma_unmap_len(cb
, dma_len
);
866 dma_unmap_page(kdev
, dma_unmap_addr(cb
, dma_addr
),
867 dma_unmap_len(cb
, dma_len
), DMA_TO_DEVICE
);
868 dma_unmap_addr_set(cb
, dma_addr
, 0);
872 /* Reclaim queued SKBs for transmission completion, lockless version */
873 static unsigned int __bcm_sysport_tx_reclaim(struct bcm_sysport_priv
*priv
,
874 struct bcm_sysport_tx_ring
*ring
)
876 unsigned int pkts_compl
= 0, bytes_compl
= 0;
877 struct net_device
*ndev
= priv
->netdev
;
878 unsigned int txbds_processed
= 0;
879 struct bcm_sysport_cb
*cb
;
880 unsigned int txbds_ready
;
881 unsigned int c_index
;
884 /* Clear status before servicing to reduce spurious interrupts */
885 if (!ring
->priv
->is_lite
)
886 intrl2_1_writel(ring
->priv
, BIT(ring
->index
), INTRL2_CPU_CLEAR
);
888 intrl2_0_writel(ring
->priv
, BIT(ring
->index
+
889 INTRL2_0_TDMA_MBDONE_SHIFT
), INTRL2_CPU_CLEAR
);
891 /* Compute how many descriptors have been processed since last call */
892 hw_ind
= tdma_readl(priv
, TDMA_DESC_RING_PROD_CONS_INDEX(ring
->index
));
893 c_index
= (hw_ind
>> RING_CONS_INDEX_SHIFT
) & RING_CONS_INDEX_MASK
;
894 txbds_ready
= (c_index
- ring
->c_index
) & RING_CONS_INDEX_MASK
;
896 netif_dbg(priv
, tx_done
, ndev
,
897 "ring=%d old_c_index=%u c_index=%u txbds_ready=%u\n",
898 ring
->index
, ring
->c_index
, c_index
, txbds_ready
);
900 while (txbds_processed
< txbds_ready
) {
901 cb
= &ring
->cbs
[ring
->clean_index
];
902 bcm_sysport_tx_reclaim_one(ring
, cb
, &bytes_compl
, &pkts_compl
);
907 if (likely(ring
->clean_index
< ring
->size
- 1))
910 ring
->clean_index
= 0;
913 u64_stats_update_begin(&priv
->syncp
);
914 ring
->packets
+= pkts_compl
;
915 ring
->bytes
+= bytes_compl
;
916 u64_stats_update_end(&priv
->syncp
);
918 ring
->c_index
= c_index
;
920 netif_dbg(priv
, tx_done
, ndev
,
921 "ring=%d c_index=%d pkts_compl=%d, bytes_compl=%d\n",
922 ring
->index
, ring
->c_index
, pkts_compl
, bytes_compl
);
927 /* Locked version of the per-ring TX reclaim routine */
928 static unsigned int bcm_sysport_tx_reclaim(struct bcm_sysport_priv
*priv
,
929 struct bcm_sysport_tx_ring
*ring
)
931 struct netdev_queue
*txq
;
932 unsigned int released
;
935 txq
= netdev_get_tx_queue(priv
->netdev
, ring
->index
);
937 spin_lock_irqsave(&ring
->lock
, flags
);
938 released
= __bcm_sysport_tx_reclaim(priv
, ring
);
940 netif_tx_wake_queue(txq
);
942 spin_unlock_irqrestore(&ring
->lock
, flags
);
947 /* Locked version of the per-ring TX reclaim, but does not wake the queue */
948 static void bcm_sysport_tx_clean(struct bcm_sysport_priv
*priv
,
949 struct bcm_sysport_tx_ring
*ring
)
953 spin_lock_irqsave(&ring
->lock
, flags
);
954 __bcm_sysport_tx_reclaim(priv
, ring
);
955 spin_unlock_irqrestore(&ring
->lock
, flags
);
958 static int bcm_sysport_tx_poll(struct napi_struct
*napi
, int budget
)
960 struct bcm_sysport_tx_ring
*ring
=
961 container_of(napi
, struct bcm_sysport_tx_ring
, napi
);
962 unsigned int work_done
= 0;
964 work_done
= bcm_sysport_tx_reclaim(ring
->priv
, ring
);
966 if (work_done
== 0) {
968 /* re-enable TX interrupt */
969 if (!ring
->priv
->is_lite
)
970 intrl2_1_mask_clear(ring
->priv
, BIT(ring
->index
));
972 intrl2_0_mask_clear(ring
->priv
, BIT(ring
->index
+
973 INTRL2_0_TDMA_MBDONE_SHIFT
));
981 static void bcm_sysport_tx_reclaim_all(struct bcm_sysport_priv
*priv
)
985 for (q
= 0; q
< priv
->netdev
->num_tx_queues
; q
++)
986 bcm_sysport_tx_reclaim(priv
, &priv
->tx_rings
[q
]);
989 static int bcm_sysport_poll(struct napi_struct
*napi
, int budget
)
991 struct bcm_sysport_priv
*priv
=
992 container_of(napi
, struct bcm_sysport_priv
, napi
);
993 struct dim_sample dim_sample
= {};
994 unsigned int work_done
= 0;
996 work_done
= bcm_sysport_desc_rx(priv
, budget
);
998 priv
->rx_c_index
+= work_done
;
999 priv
->rx_c_index
&= RDMA_CONS_INDEX_MASK
;
1001 /* SYSTEMPORT Lite groups the producer/consumer index, producer is
1002 * maintained by HW, but writes to it will be ignore while RDMA
1006 rdma_writel(priv
, priv
->rx_c_index
, RDMA_CONS_INDEX
);
1008 rdma_writel(priv
, priv
->rx_c_index
<< 16, RDMA_CONS_INDEX
);
1010 if (work_done
< budget
) {
1011 napi_complete_done(napi
, work_done
);
1012 /* re-enable RX interrupts */
1013 intrl2_0_mask_clear(priv
, INTRL2_0_RDMA_MBDONE
);
1016 if (priv
->dim
.use_dim
) {
1017 dim_update_sample(priv
->dim
.event_ctr
, priv
->dim
.packets
,
1018 priv
->dim
.bytes
, &dim_sample
);
1019 net_dim(&priv
->dim
.dim
, dim_sample
);
1025 static void mpd_enable_set(struct bcm_sysport_priv
*priv
, bool enable
)
1029 reg
= umac_readl(priv
, UMAC_MPD_CTRL
);
1034 umac_writel(priv
, reg
, UMAC_MPD_CTRL
);
1037 bit
= RBUF_ACPI_EN_LITE
;
1041 reg
= rbuf_readl(priv
, RBUF_CONTROL
);
1046 rbuf_writel(priv
, reg
, RBUF_CONTROL
);
1049 static void bcm_sysport_resume_from_wol(struct bcm_sysport_priv
*priv
)
1054 /* Disable RXCHK, active filters and Broadcom tag matching */
1055 reg
= rxchk_readl(priv
, RXCHK_CONTROL
);
1056 reg
&= ~(RXCHK_BRCM_TAG_MATCH_MASK
<<
1057 RXCHK_BRCM_TAG_MATCH_SHIFT
| RXCHK_EN
| RXCHK_BRCM_TAG_EN
);
1058 rxchk_writel(priv
, reg
, RXCHK_CONTROL
);
1060 /* Make sure we restore correct CID index in case HW lost
1061 * its context during deep idle state
1063 for_each_set_bit(index
, priv
->filters
, RXCHK_BRCM_TAG_MAX
) {
1064 rxchk_writel(priv
, priv
->filters_loc
[index
] <<
1065 RXCHK_BRCM_TAG_CID_SHIFT
, RXCHK_BRCM_TAG(index
));
1066 rxchk_writel(priv
, 0xff00ffff, RXCHK_BRCM_TAG_MASK(index
));
1069 /* Clear the MagicPacket detection logic */
1070 mpd_enable_set(priv
, false);
1072 reg
= intrl2_0_readl(priv
, INTRL2_CPU_STATUS
);
1073 if (reg
& INTRL2_0_MPD
)
1074 netdev_info(priv
->netdev
, "Wake-on-LAN (MPD) interrupt!\n");
1076 if (reg
& INTRL2_0_BRCM_MATCH_TAG
) {
1077 reg
= rxchk_readl(priv
, RXCHK_BRCM_TAG_MATCH_STATUS
) &
1078 RXCHK_BRCM_TAG_MATCH_MASK
;
1079 netdev_info(priv
->netdev
,
1080 "Wake-on-LAN (filters 0x%02x) interrupt!\n", reg
);
1083 netif_dbg(priv
, wol
, priv
->netdev
, "resumed from WOL\n");
1086 static void bcm_sysport_dim_work(struct work_struct
*work
)
1088 struct dim
*dim
= container_of(work
, struct dim
, work
);
1089 struct bcm_sysport_net_dim
*ndim
=
1090 container_of(dim
, struct bcm_sysport_net_dim
, dim
);
1091 struct bcm_sysport_priv
*priv
=
1092 container_of(ndim
, struct bcm_sysport_priv
, dim
);
1093 struct dim_cq_moder cur_profile
= net_dim_get_rx_moderation(dim
->mode
,
1096 bcm_sysport_set_rx_coalesce(priv
, cur_profile
.usec
, cur_profile
.pkts
);
1097 dim
->state
= DIM_START_MEASURE
;
1100 /* RX and misc interrupt routine */
1101 static irqreturn_t
bcm_sysport_rx_isr(int irq
, void *dev_id
)
1103 struct net_device
*dev
= dev_id
;
1104 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
1105 struct bcm_sysport_tx_ring
*txr
;
1106 unsigned int ring
, ring_bit
;
1108 priv
->irq0_stat
= intrl2_0_readl(priv
, INTRL2_CPU_STATUS
) &
1109 ~intrl2_0_readl(priv
, INTRL2_CPU_MASK_STATUS
);
1110 intrl2_0_writel(priv
, priv
->irq0_stat
, INTRL2_CPU_CLEAR
);
1112 if (unlikely(priv
->irq0_stat
== 0)) {
1113 netdev_warn(priv
->netdev
, "spurious RX interrupt\n");
1117 if (priv
->irq0_stat
& INTRL2_0_RDMA_MBDONE
) {
1118 priv
->dim
.event_ctr
++;
1119 if (likely(napi_schedule_prep(&priv
->napi
))) {
1120 /* disable RX interrupts */
1121 intrl2_0_mask_set(priv
, INTRL2_0_RDMA_MBDONE
);
1122 __napi_schedule_irqoff(&priv
->napi
);
1126 /* TX ring is full, perform a full reclaim since we do not know
1127 * which one would trigger this interrupt
1129 if (priv
->irq0_stat
& INTRL2_0_TX_RING_FULL
)
1130 bcm_sysport_tx_reclaim_all(priv
);
1135 for (ring
= 0; ring
< dev
->num_tx_queues
; ring
++) {
1136 ring_bit
= BIT(ring
+ INTRL2_0_TDMA_MBDONE_SHIFT
);
1137 if (!(priv
->irq0_stat
& ring_bit
))
1140 txr
= &priv
->tx_rings
[ring
];
1142 if (likely(napi_schedule_prep(&txr
->napi
))) {
1143 intrl2_0_mask_set(priv
, ring_bit
);
1144 __napi_schedule(&txr
->napi
);
1151 /* TX interrupt service routine */
1152 static irqreturn_t
bcm_sysport_tx_isr(int irq
, void *dev_id
)
1154 struct net_device
*dev
= dev_id
;
1155 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
1156 struct bcm_sysport_tx_ring
*txr
;
1159 priv
->irq1_stat
= intrl2_1_readl(priv
, INTRL2_CPU_STATUS
) &
1160 ~intrl2_1_readl(priv
, INTRL2_CPU_MASK_STATUS
);
1161 intrl2_1_writel(priv
, 0xffffffff, INTRL2_CPU_CLEAR
);
1163 if (unlikely(priv
->irq1_stat
== 0)) {
1164 netdev_warn(priv
->netdev
, "spurious TX interrupt\n");
1168 for (ring
= 0; ring
< dev
->num_tx_queues
; ring
++) {
1169 if (!(priv
->irq1_stat
& BIT(ring
)))
1172 txr
= &priv
->tx_rings
[ring
];
1174 if (likely(napi_schedule_prep(&txr
->napi
))) {
1175 intrl2_1_mask_set(priv
, BIT(ring
));
1176 __napi_schedule_irqoff(&txr
->napi
);
1183 static irqreturn_t
bcm_sysport_wol_isr(int irq
, void *dev_id
)
1185 struct bcm_sysport_priv
*priv
= dev_id
;
1187 pm_wakeup_event(&priv
->pdev
->dev
, 0);
1192 #ifdef CONFIG_NET_POLL_CONTROLLER
1193 static void bcm_sysport_poll_controller(struct net_device
*dev
)
1195 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
1197 disable_irq(priv
->irq0
);
1198 bcm_sysport_rx_isr(priv
->irq0
, priv
);
1199 enable_irq(priv
->irq0
);
1201 if (!priv
->is_lite
) {
1202 disable_irq(priv
->irq1
);
1203 bcm_sysport_tx_isr(priv
->irq1
, priv
);
1204 enable_irq(priv
->irq1
);
1209 static struct sk_buff
*bcm_sysport_insert_tsb(struct sk_buff
*skb
,
1210 struct net_device
*dev
)
1212 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
1213 struct sk_buff
*nskb
;
1214 struct bcm_tsb
*tsb
;
1220 /* Re-allocate SKB if needed */
1221 if (unlikely(skb_headroom(skb
) < sizeof(*tsb
))) {
1222 nskb
= skb_realloc_headroom(skb
, sizeof(*tsb
));
1224 dev_kfree_skb_any(skb
);
1225 priv
->mib
.tx_realloc_tsb_failed
++;
1226 dev
->stats
.tx_errors
++;
1227 dev
->stats
.tx_dropped
++;
1230 dev_consume_skb_any(skb
);
1232 priv
->mib
.tx_realloc_tsb
++;
1235 tsb
= skb_push(skb
, sizeof(*tsb
));
1236 /* Zero-out TSB by default */
1237 memset(tsb
, 0, sizeof(*tsb
));
1239 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
1240 ip_ver
= skb
->protocol
;
1242 case htons(ETH_P_IP
):
1243 ip_proto
= ip_hdr(skb
)->protocol
;
1245 case htons(ETH_P_IPV6
):
1246 ip_proto
= ipv6_hdr(skb
)->nexthdr
;
1252 /* Get the checksum offset and the L4 (transport) offset */
1253 csum_start
= skb_checksum_start_offset(skb
) - sizeof(*tsb
);
1254 csum_info
= (csum_start
+ skb
->csum_offset
) & L4_CSUM_PTR_MASK
;
1255 csum_info
|= (csum_start
<< L4_PTR_SHIFT
);
1257 if (ip_proto
== IPPROTO_TCP
|| ip_proto
== IPPROTO_UDP
) {
1258 csum_info
|= L4_LENGTH_VALID
;
1259 if (ip_proto
== IPPROTO_UDP
&&
1260 ip_ver
== htons(ETH_P_IP
))
1261 csum_info
|= L4_UDP
;
1266 tsb
->l4_ptr_dest_map
= csum_info
;
1272 static netdev_tx_t
bcm_sysport_xmit(struct sk_buff
*skb
,
1273 struct net_device
*dev
)
1275 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
1276 struct device
*kdev
= &priv
->pdev
->dev
;
1277 struct bcm_sysport_tx_ring
*ring
;
1278 struct bcm_sysport_cb
*cb
;
1279 struct netdev_queue
*txq
;
1280 u32 len_status
, addr_lo
;
1281 unsigned int skb_len
;
1282 unsigned long flags
;
1287 queue
= skb_get_queue_mapping(skb
);
1288 txq
= netdev_get_tx_queue(dev
, queue
);
1289 ring
= &priv
->tx_rings
[queue
];
1291 /* lock against tx reclaim in BH context and TX ring full interrupt */
1292 spin_lock_irqsave(&ring
->lock
, flags
);
1293 if (unlikely(ring
->desc_count
== 0)) {
1294 netif_tx_stop_queue(txq
);
1295 netdev_err(dev
, "queue %d awake and ring full!\n", queue
);
1296 ret
= NETDEV_TX_BUSY
;
1300 /* Insert TSB and checksum infos */
1302 skb
= bcm_sysport_insert_tsb(skb
, dev
);
1311 mapping
= dma_map_single(kdev
, skb
->data
, skb_len
, DMA_TO_DEVICE
);
1312 if (dma_mapping_error(kdev
, mapping
)) {
1313 priv
->mib
.tx_dma_failed
++;
1314 netif_err(priv
, tx_err
, dev
, "DMA map failed at %p (len=%d)\n",
1315 skb
->data
, skb_len
);
1320 /* Remember the SKB for future freeing */
1321 cb
= &ring
->cbs
[ring
->curr_desc
];
1323 dma_unmap_addr_set(cb
, dma_addr
, mapping
);
1324 dma_unmap_len_set(cb
, dma_len
, skb_len
);
1326 addr_lo
= lower_32_bits(mapping
);
1327 len_status
= upper_32_bits(mapping
) & DESC_ADDR_HI_MASK
;
1328 len_status
|= (skb_len
<< DESC_LEN_SHIFT
);
1329 len_status
|= (DESC_SOP
| DESC_EOP
| TX_STATUS_APP_CRC
) <<
1331 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
1332 len_status
|= (DESC_L4_CSUM
<< DESC_STATUS_SHIFT
);
1335 if (ring
->curr_desc
== ring
->size
)
1336 ring
->curr_desc
= 0;
1339 /* Ports are latched, so write upper address first */
1340 tdma_writel(priv
, len_status
, TDMA_WRITE_PORT_HI(ring
->index
));
1341 tdma_writel(priv
, addr_lo
, TDMA_WRITE_PORT_LO(ring
->index
));
1343 /* Check ring space and update SW control flow */
1344 if (ring
->desc_count
== 0)
1345 netif_tx_stop_queue(txq
);
1347 netif_dbg(priv
, tx_queued
, dev
, "ring=%d desc_count=%d, curr_desc=%d\n",
1348 ring
->index
, ring
->desc_count
, ring
->curr_desc
);
1352 spin_unlock_irqrestore(&ring
->lock
, flags
);
1356 static void bcm_sysport_tx_timeout(struct net_device
*dev
, unsigned int txqueue
)
1358 netdev_warn(dev
, "transmit timeout!\n");
1360 netif_trans_update(dev
);
1361 dev
->stats
.tx_errors
++;
1363 netif_tx_wake_all_queues(dev
);
1366 /* phylib adjust link callback */
1367 static void bcm_sysport_adj_link(struct net_device
*dev
)
1369 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
1370 struct phy_device
*phydev
= dev
->phydev
;
1371 unsigned int changed
= 0;
1372 u32 cmd_bits
= 0, reg
;
1374 if (priv
->old_link
!= phydev
->link
) {
1376 priv
->old_link
= phydev
->link
;
1379 if (priv
->old_duplex
!= phydev
->duplex
) {
1381 priv
->old_duplex
= phydev
->duplex
;
1387 switch (phydev
->speed
) {
1389 cmd_bits
= CMD_SPEED_2500
;
1392 cmd_bits
= CMD_SPEED_1000
;
1395 cmd_bits
= CMD_SPEED_100
;
1398 cmd_bits
= CMD_SPEED_10
;
1403 cmd_bits
<<= CMD_SPEED_SHIFT
;
1405 if (phydev
->duplex
== DUPLEX_HALF
)
1406 cmd_bits
|= CMD_HD_EN
;
1408 if (priv
->old_pause
!= phydev
->pause
) {
1410 priv
->old_pause
= phydev
->pause
;
1414 cmd_bits
|= CMD_RX_PAUSE_IGNORE
| CMD_TX_PAUSE_IGNORE
;
1420 reg
= umac_readl(priv
, UMAC_CMD
);
1421 reg
&= ~((CMD_SPEED_MASK
<< CMD_SPEED_SHIFT
) |
1422 CMD_HD_EN
| CMD_RX_PAUSE_IGNORE
|
1423 CMD_TX_PAUSE_IGNORE
);
1425 umac_writel(priv
, reg
, UMAC_CMD
);
1429 phy_print_status(phydev
);
1432 static void bcm_sysport_init_dim(struct bcm_sysport_priv
*priv
,
1433 void (*cb
)(struct work_struct
*work
))
1435 struct bcm_sysport_net_dim
*dim
= &priv
->dim
;
1437 INIT_WORK(&dim
->dim
.work
, cb
);
1438 dim
->dim
.mode
= DIM_CQ_PERIOD_MODE_START_FROM_EQE
;
1444 static void bcm_sysport_init_rx_coalesce(struct bcm_sysport_priv
*priv
)
1446 struct bcm_sysport_net_dim
*dim
= &priv
->dim
;
1447 struct dim_cq_moder moder
;
1450 usecs
= priv
->rx_coalesce_usecs
;
1451 pkts
= priv
->rx_max_coalesced_frames
;
1453 /* If DIM was enabled, re-apply default parameters */
1455 moder
= net_dim_get_def_rx_moderation(dim
->dim
.mode
);
1460 bcm_sysport_set_rx_coalesce(priv
, usecs
, pkts
);
1463 static int bcm_sysport_init_tx_ring(struct bcm_sysport_priv
*priv
,
1466 struct bcm_sysport_tx_ring
*ring
= &priv
->tx_rings
[index
];
1470 /* Simple descriptors partitioning for now */
1473 ring
->cbs
= kcalloc(size
, sizeof(struct bcm_sysport_cb
), GFP_KERNEL
);
1475 netif_err(priv
, hw
, priv
->netdev
, "CB allocation failed\n");
1479 /* Initialize SW view of the ring */
1480 spin_lock_init(&ring
->lock
);
1482 netif_tx_napi_add(priv
->netdev
, &ring
->napi
, bcm_sysport_tx_poll
, 64);
1483 ring
->index
= index
;
1485 ring
->clean_index
= 0;
1486 ring
->alloc_size
= ring
->size
;
1487 ring
->desc_count
= ring
->size
;
1488 ring
->curr_desc
= 0;
1490 /* Initialize HW ring */
1491 tdma_writel(priv
, RING_EN
, TDMA_DESC_RING_HEAD_TAIL_PTR(index
));
1492 tdma_writel(priv
, 0, TDMA_DESC_RING_COUNT(index
));
1493 tdma_writel(priv
, 1, TDMA_DESC_RING_INTR_CONTROL(index
));
1494 tdma_writel(priv
, 0, TDMA_DESC_RING_PROD_CONS_INDEX(index
));
1496 /* Configure QID and port mapping */
1497 reg
= tdma_readl(priv
, TDMA_DESC_RING_MAPPING(index
));
1498 reg
&= ~(RING_QID_MASK
| RING_PORT_ID_MASK
<< RING_PORT_ID_SHIFT
);
1499 if (ring
->inspect
) {
1500 reg
|= ring
->switch_queue
& RING_QID_MASK
;
1501 reg
|= ring
->switch_port
<< RING_PORT_ID_SHIFT
;
1503 reg
|= RING_IGNORE_STATUS
;
1505 tdma_writel(priv
, reg
, TDMA_DESC_RING_MAPPING(index
));
1506 tdma_writel(priv
, 0, TDMA_DESC_RING_PCP_DEI_VID(index
));
1508 /* Enable ACB algorithm 2 */
1509 reg
= tdma_readl(priv
, TDMA_CONTROL
);
1510 reg
|= tdma_control_bit(priv
, ACB_ALGO
);
1511 tdma_writel(priv
, reg
, TDMA_CONTROL
);
1513 /* Do not use tdma_control_bit() here because TSB_SWAP1 collides
1514 * with the original definition of ACB_ALGO
1516 reg
= tdma_readl(priv
, TDMA_CONTROL
);
1518 reg
&= ~BIT(TSB_SWAP1
);
1519 /* Set a correct TSB format based on host endian */
1520 if (!IS_ENABLED(CONFIG_CPU_BIG_ENDIAN
))
1521 reg
|= tdma_control_bit(priv
, TSB_SWAP0
);
1523 reg
&= ~tdma_control_bit(priv
, TSB_SWAP0
);
1524 tdma_writel(priv
, reg
, TDMA_CONTROL
);
1526 /* Program the number of descriptors as MAX_THRESHOLD and half of
1527 * its size for the hysteresis trigger
1529 tdma_writel(priv
, ring
->size
|
1530 1 << RING_HYST_THRESH_SHIFT
,
1531 TDMA_DESC_RING_MAX_HYST(index
));
1533 /* Enable the ring queue in the arbiter */
1534 reg
= tdma_readl(priv
, TDMA_TIER1_ARB_0_QUEUE_EN
);
1535 reg
|= (1 << index
);
1536 tdma_writel(priv
, reg
, TDMA_TIER1_ARB_0_QUEUE_EN
);
1538 napi_enable(&ring
->napi
);
1540 netif_dbg(priv
, hw
, priv
->netdev
,
1541 "TDMA cfg, size=%d, switch q=%d,port=%d\n",
1542 ring
->size
, ring
->switch_queue
,
1548 static void bcm_sysport_fini_tx_ring(struct bcm_sysport_priv
*priv
,
1551 struct bcm_sysport_tx_ring
*ring
= &priv
->tx_rings
[index
];
1554 /* Caller should stop the TDMA engine */
1555 reg
= tdma_readl(priv
, TDMA_STATUS
);
1556 if (!(reg
& TDMA_DISABLED
))
1557 netdev_warn(priv
->netdev
, "TDMA not stopped!\n");
1559 /* ring->cbs is the last part in bcm_sysport_init_tx_ring which could
1560 * fail, so by checking this pointer we know whether the TX ring was
1561 * fully initialized or not.
1566 napi_disable(&ring
->napi
);
1567 netif_napi_del(&ring
->napi
);
1569 bcm_sysport_tx_clean(priv
, ring
);
1574 ring
->alloc_size
= 0;
1576 netif_dbg(priv
, hw
, priv
->netdev
, "TDMA fini done\n");
1580 static inline int rdma_enable_set(struct bcm_sysport_priv
*priv
,
1581 unsigned int enable
)
1583 unsigned int timeout
= 1000;
1586 reg
= rdma_readl(priv
, RDMA_CONTROL
);
1591 rdma_writel(priv
, reg
, RDMA_CONTROL
);
1593 /* Poll for RMDA disabling completion */
1595 reg
= rdma_readl(priv
, RDMA_STATUS
);
1596 if (!!(reg
& RDMA_DISABLED
) == !enable
)
1598 usleep_range(1000, 2000);
1599 } while (timeout
-- > 0);
1601 netdev_err(priv
->netdev
, "timeout waiting for RDMA to finish\n");
1607 static inline int tdma_enable_set(struct bcm_sysport_priv
*priv
,
1608 unsigned int enable
)
1610 unsigned int timeout
= 1000;
1613 reg
= tdma_readl(priv
, TDMA_CONTROL
);
1615 reg
|= tdma_control_bit(priv
, TDMA_EN
);
1617 reg
&= ~tdma_control_bit(priv
, TDMA_EN
);
1618 tdma_writel(priv
, reg
, TDMA_CONTROL
);
1620 /* Poll for TMDA disabling completion */
1622 reg
= tdma_readl(priv
, TDMA_STATUS
);
1623 if (!!(reg
& TDMA_DISABLED
) == !enable
)
1626 usleep_range(1000, 2000);
1627 } while (timeout
-- > 0);
1629 netdev_err(priv
->netdev
, "timeout waiting for TDMA to finish\n");
1634 static int bcm_sysport_init_rx_ring(struct bcm_sysport_priv
*priv
)
1636 struct bcm_sysport_cb
*cb
;
1641 /* Initialize SW view of the RX ring */
1642 priv
->num_rx_bds
= priv
->num_rx_desc_words
/ WORDS_PER_DESC
;
1643 priv
->rx_bds
= priv
->base
+ SYS_PORT_RDMA_OFFSET
;
1644 priv
->rx_c_index
= 0;
1645 priv
->rx_read_ptr
= 0;
1646 priv
->rx_cbs
= kcalloc(priv
->num_rx_bds
, sizeof(struct bcm_sysport_cb
),
1648 if (!priv
->rx_cbs
) {
1649 netif_err(priv
, hw
, priv
->netdev
, "CB allocation failed\n");
1653 for (i
= 0; i
< priv
->num_rx_bds
; i
++) {
1654 cb
= priv
->rx_cbs
+ i
;
1655 cb
->bd_addr
= priv
->rx_bds
+ i
* DESC_SIZE
;
1658 ret
= bcm_sysport_alloc_rx_bufs(priv
);
1660 netif_err(priv
, hw
, priv
->netdev
, "SKB allocation failed\n");
1664 /* Initialize HW, ensure RDMA is disabled */
1665 reg
= rdma_readl(priv
, RDMA_STATUS
);
1666 if (!(reg
& RDMA_DISABLED
))
1667 rdma_enable_set(priv
, 0);
1669 rdma_writel(priv
, 0, RDMA_WRITE_PTR_LO
);
1670 rdma_writel(priv
, 0, RDMA_WRITE_PTR_HI
);
1671 rdma_writel(priv
, 0, RDMA_PROD_INDEX
);
1672 rdma_writel(priv
, 0, RDMA_CONS_INDEX
);
1673 rdma_writel(priv
, priv
->num_rx_bds
<< RDMA_RING_SIZE_SHIFT
|
1674 RX_BUF_LENGTH
, RDMA_RING_BUF_SIZE
);
1675 /* Operate the queue in ring mode */
1676 rdma_writel(priv
, 0, RDMA_START_ADDR_HI
);
1677 rdma_writel(priv
, 0, RDMA_START_ADDR_LO
);
1678 rdma_writel(priv
, 0, RDMA_END_ADDR_HI
);
1679 rdma_writel(priv
, priv
->num_rx_desc_words
- 1, RDMA_END_ADDR_LO
);
1681 netif_dbg(priv
, hw
, priv
->netdev
,
1682 "RDMA cfg, num_rx_bds=%d, rx_bds=%p\n",
1683 priv
->num_rx_bds
, priv
->rx_bds
);
1688 static void bcm_sysport_fini_rx_ring(struct bcm_sysport_priv
*priv
)
1690 struct bcm_sysport_cb
*cb
;
1694 /* Caller should ensure RDMA is disabled */
1695 reg
= rdma_readl(priv
, RDMA_STATUS
);
1696 if (!(reg
& RDMA_DISABLED
))
1697 netdev_warn(priv
->netdev
, "RDMA not stopped!\n");
1699 for (i
= 0; i
< priv
->num_rx_bds
; i
++) {
1700 cb
= &priv
->rx_cbs
[i
];
1701 if (dma_unmap_addr(cb
, dma_addr
))
1702 dma_unmap_single(&priv
->pdev
->dev
,
1703 dma_unmap_addr(cb
, dma_addr
),
1704 RX_BUF_LENGTH
, DMA_FROM_DEVICE
);
1705 bcm_sysport_free_cb(cb
);
1708 kfree(priv
->rx_cbs
);
1709 priv
->rx_cbs
= NULL
;
1711 netif_dbg(priv
, hw
, priv
->netdev
, "RDMA fini done\n");
1714 static void bcm_sysport_set_rx_mode(struct net_device
*dev
)
1716 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
1722 reg
= umac_readl(priv
, UMAC_CMD
);
1723 if (dev
->flags
& IFF_PROMISC
)
1726 reg
&= ~CMD_PROMISC
;
1727 umac_writel(priv
, reg
, UMAC_CMD
);
1729 /* No support for ALLMULTI */
1730 if (dev
->flags
& IFF_ALLMULTI
)
1734 static inline void umac_enable_set(struct bcm_sysport_priv
*priv
,
1735 u32 mask
, unsigned int enable
)
1739 if (!priv
->is_lite
) {
1740 reg
= umac_readl(priv
, UMAC_CMD
);
1745 umac_writel(priv
, reg
, UMAC_CMD
);
1747 reg
= gib_readl(priv
, GIB_CONTROL
);
1752 gib_writel(priv
, reg
, GIB_CONTROL
);
1755 /* UniMAC stops on a packet boundary, wait for a full-sized packet
1756 * to be processed (1 msec).
1759 usleep_range(1000, 2000);
1762 static inline void umac_reset(struct bcm_sysport_priv
*priv
)
1769 reg
= umac_readl(priv
, UMAC_CMD
);
1770 reg
|= CMD_SW_RESET
;
1771 umac_writel(priv
, reg
, UMAC_CMD
);
1773 reg
= umac_readl(priv
, UMAC_CMD
);
1774 reg
&= ~CMD_SW_RESET
;
1775 umac_writel(priv
, reg
, UMAC_CMD
);
1778 static void umac_set_hw_addr(struct bcm_sysport_priv
*priv
,
1779 unsigned char *addr
)
1781 u32 mac0
= (addr
[0] << 24) | (addr
[1] << 16) | (addr
[2] << 8) |
1783 u32 mac1
= (addr
[4] << 8) | addr
[5];
1785 if (!priv
->is_lite
) {
1786 umac_writel(priv
, mac0
, UMAC_MAC0
);
1787 umac_writel(priv
, mac1
, UMAC_MAC1
);
1789 gib_writel(priv
, mac0
, GIB_MAC0
);
1790 gib_writel(priv
, mac1
, GIB_MAC1
);
1794 static void topctrl_flush(struct bcm_sysport_priv
*priv
)
1796 topctrl_writel(priv
, RX_FLUSH
, RX_FLUSH_CNTL
);
1797 topctrl_writel(priv
, TX_FLUSH
, TX_FLUSH_CNTL
);
1799 topctrl_writel(priv
, 0, RX_FLUSH_CNTL
);
1800 topctrl_writel(priv
, 0, TX_FLUSH_CNTL
);
1803 static int bcm_sysport_change_mac(struct net_device
*dev
, void *p
)
1805 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
1806 struct sockaddr
*addr
= p
;
1808 if (!is_valid_ether_addr(addr
->sa_data
))
1811 memcpy(dev
->dev_addr
, addr
->sa_data
, dev
->addr_len
);
1813 /* interface is disabled, changes to MAC will be reflected on next
1816 if (!netif_running(dev
))
1819 umac_set_hw_addr(priv
, dev
->dev_addr
);
1824 static void bcm_sysport_get_stats64(struct net_device
*dev
,
1825 struct rtnl_link_stats64
*stats
)
1827 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
1828 struct bcm_sysport_stats64
*stats64
= &priv
->stats64
;
1831 netdev_stats_to_stats64(stats
, &dev
->stats
);
1833 bcm_sysport_update_tx_stats(priv
, &stats
->tx_bytes
,
1834 &stats
->tx_packets
);
1837 start
= u64_stats_fetch_begin_irq(&priv
->syncp
);
1838 stats
->rx_packets
= stats64
->rx_packets
;
1839 stats
->rx_bytes
= stats64
->rx_bytes
;
1840 } while (u64_stats_fetch_retry_irq(&priv
->syncp
, start
));
1843 static void bcm_sysport_netif_start(struct net_device
*dev
)
1845 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
1848 bcm_sysport_init_dim(priv
, bcm_sysport_dim_work
);
1849 bcm_sysport_init_rx_coalesce(priv
);
1850 napi_enable(&priv
->napi
);
1852 /* Enable RX interrupt and TX ring full interrupt */
1853 intrl2_0_mask_clear(priv
, INTRL2_0_RDMA_MBDONE
| INTRL2_0_TX_RING_FULL
);
1855 phy_start(dev
->phydev
);
1857 /* Enable TX interrupts for the TXQs */
1859 intrl2_1_mask_clear(priv
, 0xffffffff);
1861 intrl2_0_mask_clear(priv
, INTRL2_0_TDMA_MBDONE_MASK
);
1864 static void rbuf_init(struct bcm_sysport_priv
*priv
)
1868 reg
= rbuf_readl(priv
, RBUF_CONTROL
);
1869 reg
|= RBUF_4B_ALGN
| RBUF_RSB_EN
;
1870 /* Set a correct RSB format on SYSTEMPORT Lite */
1872 reg
&= ~RBUF_RSB_SWAP1
;
1874 /* Set a correct RSB format based on host endian */
1875 if (!IS_ENABLED(CONFIG_CPU_BIG_ENDIAN
))
1876 reg
|= RBUF_RSB_SWAP0
;
1878 reg
&= ~RBUF_RSB_SWAP0
;
1879 rbuf_writel(priv
, reg
, RBUF_CONTROL
);
1882 static inline void bcm_sysport_mask_all_intrs(struct bcm_sysport_priv
*priv
)
1884 intrl2_0_mask_set(priv
, 0xffffffff);
1885 intrl2_0_writel(priv
, 0xffffffff, INTRL2_CPU_CLEAR
);
1886 if (!priv
->is_lite
) {
1887 intrl2_1_mask_set(priv
, 0xffffffff);
1888 intrl2_1_writel(priv
, 0xffffffff, INTRL2_CPU_CLEAR
);
1892 static inline void gib_set_pad_extension(struct bcm_sysport_priv
*priv
)
1896 reg
= gib_readl(priv
, GIB_CONTROL
);
1897 /* Include Broadcom tag in pad extension and fix up IPG_LENGTH */
1898 if (netdev_uses_dsa(priv
->netdev
)) {
1899 reg
&= ~(GIB_PAD_EXTENSION_MASK
<< GIB_PAD_EXTENSION_SHIFT
);
1900 reg
|= ENET_BRCM_TAG_LEN
<< GIB_PAD_EXTENSION_SHIFT
;
1902 reg
&= ~(GIB_IPG_LEN_MASK
<< GIB_IPG_LEN_SHIFT
);
1903 reg
|= 12 << GIB_IPG_LEN_SHIFT
;
1904 gib_writel(priv
, reg
, GIB_CONTROL
);
1907 static int bcm_sysport_open(struct net_device
*dev
)
1909 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
1910 struct phy_device
*phydev
;
1917 /* Flush TX and RX FIFOs at TOPCTRL level */
1918 topctrl_flush(priv
);
1920 /* Disable the UniMAC RX/TX */
1921 umac_enable_set(priv
, CMD_RX_EN
| CMD_TX_EN
, 0);
1923 /* Enable RBUF 2bytes alignment and Receive Status Block */
1926 /* Set maximum frame length */
1928 umac_writel(priv
, UMAC_MAX_MTU_SIZE
, UMAC_MAX_FRAME_LEN
);
1930 gib_set_pad_extension(priv
);
1932 /* Apply features again in case we changed them while interface was
1935 bcm_sysport_set_features(dev
, dev
->features
);
1937 /* Set MAC address */
1938 umac_set_hw_addr(priv
, dev
->dev_addr
);
1940 phydev
= of_phy_connect(dev
, priv
->phy_dn
, bcm_sysport_adj_link
,
1941 0, priv
->phy_interface
);
1943 netdev_err(dev
, "could not attach to PHY\n");
1947 /* Reset house keeping link status */
1948 priv
->old_duplex
= -1;
1949 priv
->old_link
= -1;
1950 priv
->old_pause
= -1;
1952 /* mask all interrupts and request them */
1953 bcm_sysport_mask_all_intrs(priv
);
1955 ret
= request_irq(priv
->irq0
, bcm_sysport_rx_isr
, 0, dev
->name
, dev
);
1957 netdev_err(dev
, "failed to request RX interrupt\n");
1958 goto out_phy_disconnect
;
1961 if (!priv
->is_lite
) {
1962 ret
= request_irq(priv
->irq1
, bcm_sysport_tx_isr
, 0,
1965 netdev_err(dev
, "failed to request TX interrupt\n");
1970 /* Initialize both hardware and software ring */
1971 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
1972 ret
= bcm_sysport_init_tx_ring(priv
, i
);
1974 netdev_err(dev
, "failed to initialize TX ring %d\n",
1976 goto out_free_tx_ring
;
1980 /* Initialize linked-list */
1981 tdma_writel(priv
, TDMA_LL_RAM_INIT_BUSY
, TDMA_STATUS
);
1983 /* Initialize RX ring */
1984 ret
= bcm_sysport_init_rx_ring(priv
);
1986 netdev_err(dev
, "failed to initialize RX ring\n");
1987 goto out_free_rx_ring
;
1991 ret
= rdma_enable_set(priv
, 1);
1993 goto out_free_rx_ring
;
1996 ret
= tdma_enable_set(priv
, 1);
1998 goto out_clear_rx_int
;
2000 /* Turn on UniMAC TX/RX */
2001 umac_enable_set(priv
, CMD_RX_EN
| CMD_TX_EN
, 1);
2003 bcm_sysport_netif_start(dev
);
2005 netif_tx_start_all_queues(dev
);
2010 intrl2_0_mask_set(priv
, INTRL2_0_RDMA_MBDONE
| INTRL2_0_TX_RING_FULL
);
2012 bcm_sysport_fini_rx_ring(priv
);
2014 for (i
= 0; i
< dev
->num_tx_queues
; i
++)
2015 bcm_sysport_fini_tx_ring(priv
, i
);
2017 free_irq(priv
->irq1
, dev
);
2019 free_irq(priv
->irq0
, dev
);
2021 phy_disconnect(phydev
);
2025 static void bcm_sysport_netif_stop(struct net_device
*dev
)
2027 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
2029 /* stop all software from updating hardware */
2030 netif_tx_disable(dev
);
2031 napi_disable(&priv
->napi
);
2032 cancel_work_sync(&priv
->dim
.dim
.work
);
2033 phy_stop(dev
->phydev
);
2035 /* mask all interrupts */
2036 bcm_sysport_mask_all_intrs(priv
);
2039 static int bcm_sysport_stop(struct net_device
*dev
)
2041 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
2045 bcm_sysport_netif_stop(dev
);
2047 /* Disable UniMAC RX */
2048 umac_enable_set(priv
, CMD_RX_EN
, 0);
2050 ret
= tdma_enable_set(priv
, 0);
2052 netdev_err(dev
, "timeout disabling RDMA\n");
2056 /* Wait for a maximum packet size to be drained */
2057 usleep_range(2000, 3000);
2059 ret
= rdma_enable_set(priv
, 0);
2061 netdev_err(dev
, "timeout disabling TDMA\n");
2065 /* Disable UniMAC TX */
2066 umac_enable_set(priv
, CMD_TX_EN
, 0);
2068 /* Free RX/TX rings SW structures */
2069 for (i
= 0; i
< dev
->num_tx_queues
; i
++)
2070 bcm_sysport_fini_tx_ring(priv
, i
);
2071 bcm_sysport_fini_rx_ring(priv
);
2073 free_irq(priv
->irq0
, dev
);
2075 free_irq(priv
->irq1
, dev
);
2077 /* Disconnect from PHY */
2078 phy_disconnect(dev
->phydev
);
2083 static int bcm_sysport_rule_find(struct bcm_sysport_priv
*priv
,
2089 for_each_set_bit(index
, priv
->filters
, RXCHK_BRCM_TAG_MAX
) {
2090 reg
= rxchk_readl(priv
, RXCHK_BRCM_TAG(index
));
2091 reg
>>= RXCHK_BRCM_TAG_CID_SHIFT
;
2092 reg
&= RXCHK_BRCM_TAG_CID_MASK
;
2093 if (reg
== location
)
2100 static int bcm_sysport_rule_get(struct bcm_sysport_priv
*priv
,
2101 struct ethtool_rxnfc
*nfc
)
2105 /* This is not a rule that we know about */
2106 index
= bcm_sysport_rule_find(priv
, nfc
->fs
.location
);
2110 nfc
->fs
.ring_cookie
= RX_CLS_FLOW_WAKE
;
2115 static int bcm_sysport_rule_set(struct bcm_sysport_priv
*priv
,
2116 struct ethtool_rxnfc
*nfc
)
2121 /* We cannot match locations greater than what the classification ID
2122 * permits (256 entries)
2124 if (nfc
->fs
.location
> RXCHK_BRCM_TAG_CID_MASK
)
2127 /* We cannot support flows that are not destined for a wake-up */
2128 if (nfc
->fs
.ring_cookie
!= RX_CLS_FLOW_WAKE
)
2131 /* All filters are already in use, we cannot match more rules */
2132 if (bitmap_weight(priv
->filters
, RXCHK_BRCM_TAG_MAX
) ==
2136 index
= find_first_zero_bit(priv
->filters
, RXCHK_BRCM_TAG_MAX
);
2137 if (index
>= RXCHK_BRCM_TAG_MAX
)
2140 /* Location is the classification ID, and index is the position
2141 * within one of our 8 possible filters to be programmed
2143 reg
= rxchk_readl(priv
, RXCHK_BRCM_TAG(index
));
2144 reg
&= ~(RXCHK_BRCM_TAG_CID_MASK
<< RXCHK_BRCM_TAG_CID_SHIFT
);
2145 reg
|= nfc
->fs
.location
<< RXCHK_BRCM_TAG_CID_SHIFT
;
2146 rxchk_writel(priv
, reg
, RXCHK_BRCM_TAG(index
));
2147 rxchk_writel(priv
, 0xff00ffff, RXCHK_BRCM_TAG_MASK(index
));
2149 priv
->filters_loc
[index
] = nfc
->fs
.location
;
2150 set_bit(index
, priv
->filters
);
2155 static int bcm_sysport_rule_del(struct bcm_sysport_priv
*priv
,
2160 /* This is not a rule that we know about */
2161 index
= bcm_sysport_rule_find(priv
, location
);
2165 /* No need to disable this filter if it was enabled, this will
2166 * be taken care of during suspend time by bcm_sysport_suspend_to_wol
2168 clear_bit(index
, priv
->filters
);
2169 priv
->filters_loc
[index
] = 0;
2174 static int bcm_sysport_get_rxnfc(struct net_device
*dev
,
2175 struct ethtool_rxnfc
*nfc
, u32
*rule_locs
)
2177 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
2178 int ret
= -EOPNOTSUPP
;
2181 case ETHTOOL_GRXCLSRULE
:
2182 ret
= bcm_sysport_rule_get(priv
, nfc
);
2191 static int bcm_sysport_set_rxnfc(struct net_device
*dev
,
2192 struct ethtool_rxnfc
*nfc
)
2194 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
2195 int ret
= -EOPNOTSUPP
;
2198 case ETHTOOL_SRXCLSRLINS
:
2199 ret
= bcm_sysport_rule_set(priv
, nfc
);
2201 case ETHTOOL_SRXCLSRLDEL
:
2202 ret
= bcm_sysport_rule_del(priv
, nfc
->fs
.location
);
2211 static const struct ethtool_ops bcm_sysport_ethtool_ops
= {
2212 .supported_coalesce_params
= ETHTOOL_COALESCE_USECS
|
2213 ETHTOOL_COALESCE_MAX_FRAMES
|
2214 ETHTOOL_COALESCE_USE_ADAPTIVE_RX
,
2215 .get_drvinfo
= bcm_sysport_get_drvinfo
,
2216 .get_msglevel
= bcm_sysport_get_msglvl
,
2217 .set_msglevel
= bcm_sysport_set_msglvl
,
2218 .get_link
= ethtool_op_get_link
,
2219 .get_strings
= bcm_sysport_get_strings
,
2220 .get_ethtool_stats
= bcm_sysport_get_stats
,
2221 .get_sset_count
= bcm_sysport_get_sset_count
,
2222 .get_wol
= bcm_sysport_get_wol
,
2223 .set_wol
= bcm_sysport_set_wol
,
2224 .get_coalesce
= bcm_sysport_get_coalesce
,
2225 .set_coalesce
= bcm_sysport_set_coalesce
,
2226 .get_link_ksettings
= phy_ethtool_get_link_ksettings
,
2227 .set_link_ksettings
= phy_ethtool_set_link_ksettings
,
2228 .get_rxnfc
= bcm_sysport_get_rxnfc
,
2229 .set_rxnfc
= bcm_sysport_set_rxnfc
,
2232 static u16
bcm_sysport_select_queue(struct net_device
*dev
, struct sk_buff
*skb
,
2233 struct net_device
*sb_dev
)
2235 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
2236 u16 queue
= skb_get_queue_mapping(skb
);
2237 struct bcm_sysport_tx_ring
*tx_ring
;
2238 unsigned int q
, port
;
2240 if (!netdev_uses_dsa(dev
))
2241 return netdev_pick_tx(dev
, skb
, NULL
);
2243 /* DSA tagging layer will have configured the correct queue */
2244 q
= BRCM_TAG_GET_QUEUE(queue
);
2245 port
= BRCM_TAG_GET_PORT(queue
);
2246 tx_ring
= priv
->ring_map
[q
+ port
* priv
->per_port_num_tx_queues
];
2248 if (unlikely(!tx_ring
))
2249 return netdev_pick_tx(dev
, skb
, NULL
);
2251 return tx_ring
->index
;
2254 static const struct net_device_ops bcm_sysport_netdev_ops
= {
2255 .ndo_start_xmit
= bcm_sysport_xmit
,
2256 .ndo_tx_timeout
= bcm_sysport_tx_timeout
,
2257 .ndo_open
= bcm_sysport_open
,
2258 .ndo_stop
= bcm_sysport_stop
,
2259 .ndo_set_features
= bcm_sysport_set_features
,
2260 .ndo_set_rx_mode
= bcm_sysport_set_rx_mode
,
2261 .ndo_set_mac_address
= bcm_sysport_change_mac
,
2262 #ifdef CONFIG_NET_POLL_CONTROLLER
2263 .ndo_poll_controller
= bcm_sysport_poll_controller
,
2265 .ndo_get_stats64
= bcm_sysport_get_stats64
,
2266 .ndo_select_queue
= bcm_sysport_select_queue
,
2269 static int bcm_sysport_map_queues(struct notifier_block
*nb
,
2270 struct dsa_notifier_register_info
*info
)
2272 struct bcm_sysport_tx_ring
*ring
;
2273 struct bcm_sysport_priv
*priv
;
2274 struct net_device
*slave_dev
;
2275 unsigned int num_tx_queues
;
2276 unsigned int q
, qp
, port
;
2277 struct net_device
*dev
;
2279 priv
= container_of(nb
, struct bcm_sysport_priv
, dsa_notifier
);
2280 if (priv
->netdev
!= info
->master
)
2285 /* We can't be setting up queue inspection for non directly attached
2288 if (info
->switch_number
)
2291 if (dev
->netdev_ops
!= &bcm_sysport_netdev_ops
)
2294 port
= info
->port_number
;
2295 slave_dev
= info
->info
.dev
;
2297 /* On SYSTEMPORT Lite we have twice as less queues, so we cannot do a
2298 * 1:1 mapping, we can only do a 2:1 mapping. By reducing the number of
2299 * per-port (slave_dev) network devices queue, we achieve just that.
2300 * This need to happen now before any slave network device is used such
2301 * it accurately reflects the number of real TX queues.
2304 netif_set_real_num_tx_queues(slave_dev
,
2305 slave_dev
->num_tx_queues
/ 2);
2307 num_tx_queues
= slave_dev
->real_num_tx_queues
;
2309 if (priv
->per_port_num_tx_queues
&&
2310 priv
->per_port_num_tx_queues
!= num_tx_queues
)
2311 netdev_warn(slave_dev
, "asymmetric number of per-port queues\n");
2313 priv
->per_port_num_tx_queues
= num_tx_queues
;
2315 for (q
= 0, qp
= 0; q
< dev
->num_tx_queues
&& qp
< num_tx_queues
;
2317 ring
= &priv
->tx_rings
[q
];
2322 /* Just remember the mapping actual programming done
2323 * during bcm_sysport_init_tx_ring
2325 ring
->switch_queue
= qp
;
2326 ring
->switch_port
= port
;
2327 ring
->inspect
= true;
2328 priv
->ring_map
[qp
+ port
* num_tx_queues
] = ring
;
2335 static int bcm_sysport_unmap_queues(struct notifier_block
*nb
,
2336 struct dsa_notifier_register_info
*info
)
2338 struct bcm_sysport_tx_ring
*ring
;
2339 struct bcm_sysport_priv
*priv
;
2340 struct net_device
*slave_dev
;
2341 unsigned int num_tx_queues
;
2342 struct net_device
*dev
;
2343 unsigned int q
, qp
, port
;
2345 priv
= container_of(nb
, struct bcm_sysport_priv
, dsa_notifier
);
2346 if (priv
->netdev
!= info
->master
)
2351 if (dev
->netdev_ops
!= &bcm_sysport_netdev_ops
)
2354 port
= info
->port_number
;
2355 slave_dev
= info
->info
.dev
;
2357 num_tx_queues
= slave_dev
->real_num_tx_queues
;
2359 for (q
= 0; q
< dev
->num_tx_queues
; q
++) {
2360 ring
= &priv
->tx_rings
[q
];
2362 if (ring
->switch_port
!= port
)
2368 ring
->inspect
= false;
2369 qp
= ring
->switch_queue
;
2370 priv
->ring_map
[qp
+ port
* num_tx_queues
] = NULL
;
2376 static int bcm_sysport_dsa_notifier(struct notifier_block
*nb
,
2377 unsigned long event
, void *ptr
)
2379 int ret
= NOTIFY_DONE
;
2382 case DSA_PORT_REGISTER
:
2383 ret
= bcm_sysport_map_queues(nb
, ptr
);
2385 case DSA_PORT_UNREGISTER
:
2386 ret
= bcm_sysport_unmap_queues(nb
, ptr
);
2390 return notifier_from_errno(ret
);
2393 #define REV_FMT "v%2x.%02x"
2395 static const struct bcm_sysport_hw_params bcm_sysport_params
[] = {
2398 .num_rx_desc_words
= SP_NUM_HW_RX_DESC_WORDS
,
2400 [SYSTEMPORT_LITE
] = {
2402 .num_rx_desc_words
= SP_LT_NUM_HW_RX_DESC_WORDS
,
2406 static const struct of_device_id bcm_sysport_of_match
[] = {
2407 { .compatible
= "brcm,systemportlite-v1.00",
2408 .data
= &bcm_sysport_params
[SYSTEMPORT_LITE
] },
2409 { .compatible
= "brcm,systemport-v1.00",
2410 .data
= &bcm_sysport_params
[SYSTEMPORT
] },
2411 { .compatible
= "brcm,systemport",
2412 .data
= &bcm_sysport_params
[SYSTEMPORT
] },
2415 MODULE_DEVICE_TABLE(of
, bcm_sysport_of_match
);
2417 static int bcm_sysport_probe(struct platform_device
*pdev
)
2419 const struct bcm_sysport_hw_params
*params
;
2420 const struct of_device_id
*of_id
= NULL
;
2421 struct bcm_sysport_priv
*priv
;
2422 struct device_node
*dn
;
2423 struct net_device
*dev
;
2424 const void *macaddr
;
2428 dn
= pdev
->dev
.of_node
;
2429 of_id
= of_match_node(bcm_sysport_of_match
, dn
);
2430 if (!of_id
|| !of_id
->data
)
2433 ret
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(40));
2435 ret
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(32));
2437 dev_err(&pdev
->dev
, "unable to set DMA mask: %d\n", ret
);
2441 /* Fairly quickly we need to know the type of adapter we have */
2442 params
= of_id
->data
;
2444 /* Read the Transmit/Receive Queue properties */
2445 if (of_property_read_u32(dn
, "systemport,num-txq", &txq
))
2446 txq
= TDMA_NUM_RINGS
;
2447 if (of_property_read_u32(dn
, "systemport,num-rxq", &rxq
))
2450 /* Sanity check the number of transmit queues */
2451 if (!txq
|| txq
> TDMA_NUM_RINGS
)
2454 dev
= alloc_etherdev_mqs(sizeof(*priv
), txq
, rxq
);
2458 /* Initialize private members */
2459 priv
= netdev_priv(dev
);
2461 /* Allocate number of TX rings */
2462 priv
->tx_rings
= devm_kcalloc(&pdev
->dev
, txq
,
2463 sizeof(struct bcm_sysport_tx_ring
),
2465 if (!priv
->tx_rings
)
2468 priv
->is_lite
= params
->is_lite
;
2469 priv
->num_rx_desc_words
= params
->num_rx_desc_words
;
2471 priv
->irq0
= platform_get_irq(pdev
, 0);
2472 if (!priv
->is_lite
) {
2473 priv
->irq1
= platform_get_irq(pdev
, 1);
2474 priv
->wol_irq
= platform_get_irq(pdev
, 2);
2476 priv
->wol_irq
= platform_get_irq(pdev
, 1);
2478 if (priv
->irq0
<= 0 || (priv
->irq1
<= 0 && !priv
->is_lite
)) {
2480 goto err_free_netdev
;
2483 priv
->base
= devm_platform_ioremap_resource(pdev
, 0);
2484 if (IS_ERR(priv
->base
)) {
2485 ret
= PTR_ERR(priv
->base
);
2486 goto err_free_netdev
;
2492 ret
= of_get_phy_mode(dn
, &priv
->phy_interface
);
2493 /* Default to GMII interface mode */
2495 priv
->phy_interface
= PHY_INTERFACE_MODE_GMII
;
2497 /* In the case of a fixed PHY, the DT node associated
2498 * to the PHY is the Ethernet MAC DT node.
2500 if (of_phy_is_fixed_link(dn
)) {
2501 ret
= of_phy_register_fixed_link(dn
);
2503 dev_err(&pdev
->dev
, "failed to register fixed PHY\n");
2504 goto err_free_netdev
;
2510 /* Initialize netdevice members */
2511 macaddr
= of_get_mac_address(dn
);
2512 if (IS_ERR(macaddr
)) {
2513 dev_warn(&pdev
->dev
, "using random Ethernet MAC\n");
2514 eth_hw_addr_random(dev
);
2516 ether_addr_copy(dev
->dev_addr
, macaddr
);
2519 SET_NETDEV_DEV(dev
, &pdev
->dev
);
2520 dev_set_drvdata(&pdev
->dev
, dev
);
2521 dev
->ethtool_ops
= &bcm_sysport_ethtool_ops
;
2522 dev
->netdev_ops
= &bcm_sysport_netdev_ops
;
2523 netif_napi_add(dev
, &priv
->napi
, bcm_sysport_poll
, 64);
2525 dev
->features
|= NETIF_F_RXCSUM
| NETIF_F_HIGHDMA
|
2526 NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
;
2527 dev
->hw_features
|= dev
->features
;
2528 dev
->vlan_features
|= dev
->features
;
2530 /* Request the WOL interrupt and advertise suspend if available */
2531 priv
->wol_irq_disabled
= 1;
2532 ret
= devm_request_irq(&pdev
->dev
, priv
->wol_irq
,
2533 bcm_sysport_wol_isr
, 0, dev
->name
, priv
);
2535 device_set_wakeup_capable(&pdev
->dev
, 1);
2537 /* Set the needed headroom once and for all */
2538 BUILD_BUG_ON(sizeof(struct bcm_tsb
) != 8);
2539 dev
->needed_headroom
+= sizeof(struct bcm_tsb
);
2541 /* libphy will adjust the link state accordingly */
2542 netif_carrier_off(dev
);
2544 priv
->rx_max_coalesced_frames
= 1;
2545 u64_stats_init(&priv
->syncp
);
2547 priv
->dsa_notifier
.notifier_call
= bcm_sysport_dsa_notifier
;
2549 ret
= register_dsa_notifier(&priv
->dsa_notifier
);
2551 dev_err(&pdev
->dev
, "failed to register DSA notifier\n");
2552 goto err_deregister_fixed_link
;
2555 ret
= register_netdev(dev
);
2557 dev_err(&pdev
->dev
, "failed to register net_device\n");
2558 goto err_deregister_notifier
;
2561 priv
->rev
= topctrl_readl(priv
, REV_CNTL
) & REV_MASK
;
2562 dev_info(&pdev
->dev
,
2563 "Broadcom SYSTEMPORT%s " REV_FMT
2564 " (irqs: %d, %d, TXQs: %d, RXQs: %d)\n",
2565 priv
->is_lite
? " Lite" : "",
2566 (priv
->rev
>> 8) & 0xff, priv
->rev
& 0xff,
2567 priv
->irq0
, priv
->irq1
, txq
, rxq
);
2571 err_deregister_notifier
:
2572 unregister_dsa_notifier(&priv
->dsa_notifier
);
2573 err_deregister_fixed_link
:
2574 if (of_phy_is_fixed_link(dn
))
2575 of_phy_deregister_fixed_link(dn
);
2581 static int bcm_sysport_remove(struct platform_device
*pdev
)
2583 struct net_device
*dev
= dev_get_drvdata(&pdev
->dev
);
2584 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
2585 struct device_node
*dn
= pdev
->dev
.of_node
;
2587 /* Not much to do, ndo_close has been called
2588 * and we use managed allocations
2590 unregister_dsa_notifier(&priv
->dsa_notifier
);
2591 unregister_netdev(dev
);
2592 if (of_phy_is_fixed_link(dn
))
2593 of_phy_deregister_fixed_link(dn
);
2595 dev_set_drvdata(&pdev
->dev
, NULL
);
2600 static int bcm_sysport_suspend_to_wol(struct bcm_sysport_priv
*priv
)
2602 struct net_device
*ndev
= priv
->netdev
;
2603 unsigned int timeout
= 1000;
2604 unsigned int index
, i
= 0;
2607 reg
= umac_readl(priv
, UMAC_MPD_CTRL
);
2608 if (priv
->wolopts
& (WAKE_MAGIC
| WAKE_MAGICSECURE
))
2611 if (priv
->wolopts
& WAKE_MAGICSECURE
) {
2612 /* Program the SecureOn password */
2613 umac_writel(priv
, get_unaligned_be16(&priv
->sopass
[0]),
2615 umac_writel(priv
, get_unaligned_be32(&priv
->sopass
[2]),
2619 umac_writel(priv
, reg
, UMAC_MPD_CTRL
);
2621 if (priv
->wolopts
& WAKE_FILTER
) {
2622 /* Turn on ACPI matching to steal packets from RBUF */
2623 reg
= rbuf_readl(priv
, RBUF_CONTROL
);
2625 reg
|= RBUF_ACPI_EN_LITE
;
2627 reg
|= RBUF_ACPI_EN
;
2628 rbuf_writel(priv
, reg
, RBUF_CONTROL
);
2630 /* Enable RXCHK, active filters and Broadcom tag matching */
2631 reg
= rxchk_readl(priv
, RXCHK_CONTROL
);
2632 reg
&= ~(RXCHK_BRCM_TAG_MATCH_MASK
<<
2633 RXCHK_BRCM_TAG_MATCH_SHIFT
);
2634 for_each_set_bit(index
, priv
->filters
, RXCHK_BRCM_TAG_MAX
) {
2635 reg
|= BIT(RXCHK_BRCM_TAG_MATCH_SHIFT
+ i
);
2638 reg
|= RXCHK_EN
| RXCHK_BRCM_TAG_EN
;
2639 rxchk_writel(priv
, reg
, RXCHK_CONTROL
);
2642 /* Make sure RBUF entered WoL mode as result */
2644 reg
= rbuf_readl(priv
, RBUF_STATUS
);
2645 if (reg
& RBUF_WOL_MODE
)
2649 } while (timeout
-- > 0);
2651 /* Do not leave the UniMAC RBUF matching only MPD packets */
2653 mpd_enable_set(priv
, false);
2654 netif_err(priv
, wol
, ndev
, "failed to enter WOL mode\n");
2658 /* UniMAC receive needs to be turned on */
2659 umac_enable_set(priv
, CMD_RX_EN
, 1);
2661 netif_dbg(priv
, wol
, ndev
, "entered WOL mode\n");
2666 static int __maybe_unused
bcm_sysport_suspend(struct device
*d
)
2668 struct net_device
*dev
= dev_get_drvdata(d
);
2669 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
2674 if (!netif_running(dev
))
2677 netif_device_detach(dev
);
2679 bcm_sysport_netif_stop(dev
);
2681 phy_suspend(dev
->phydev
);
2683 /* Disable UniMAC RX */
2684 umac_enable_set(priv
, CMD_RX_EN
, 0);
2686 ret
= rdma_enable_set(priv
, 0);
2688 netdev_err(dev
, "RDMA timeout!\n");
2692 /* Disable RXCHK if enabled */
2693 if (priv
->rx_chk_en
) {
2694 reg
= rxchk_readl(priv
, RXCHK_CONTROL
);
2696 rxchk_writel(priv
, reg
, RXCHK_CONTROL
);
2701 topctrl_writel(priv
, RX_FLUSH
, RX_FLUSH_CNTL
);
2703 ret
= tdma_enable_set(priv
, 0);
2705 netdev_err(dev
, "TDMA timeout!\n");
2709 /* Wait for a packet boundary */
2710 usleep_range(2000, 3000);
2712 umac_enable_set(priv
, CMD_TX_EN
, 0);
2714 topctrl_writel(priv
, TX_FLUSH
, TX_FLUSH_CNTL
);
2716 /* Free RX/TX rings SW structures */
2717 for (i
= 0; i
< dev
->num_tx_queues
; i
++)
2718 bcm_sysport_fini_tx_ring(priv
, i
);
2719 bcm_sysport_fini_rx_ring(priv
);
2721 /* Get prepared for Wake-on-LAN */
2722 if (device_may_wakeup(d
) && priv
->wolopts
)
2723 ret
= bcm_sysport_suspend_to_wol(priv
);
2728 static int __maybe_unused
bcm_sysport_resume(struct device
*d
)
2730 struct net_device
*dev
= dev_get_drvdata(d
);
2731 struct bcm_sysport_priv
*priv
= netdev_priv(dev
);
2735 if (!netif_running(dev
))
2740 /* Disable the UniMAC RX/TX */
2741 umac_enable_set(priv
, CMD_RX_EN
| CMD_TX_EN
, 0);
2743 /* We may have been suspended and never received a WOL event that
2744 * would turn off MPD detection, take care of that now
2746 bcm_sysport_resume_from_wol(priv
);
2748 /* Initialize both hardware and software ring */
2749 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
2750 ret
= bcm_sysport_init_tx_ring(priv
, i
);
2752 netdev_err(dev
, "failed to initialize TX ring %d\n",
2754 goto out_free_tx_rings
;
2758 /* Initialize linked-list */
2759 tdma_writel(priv
, TDMA_LL_RAM_INIT_BUSY
, TDMA_STATUS
);
2761 /* Initialize RX ring */
2762 ret
= bcm_sysport_init_rx_ring(priv
);
2764 netdev_err(dev
, "failed to initialize RX ring\n");
2765 goto out_free_rx_ring
;
2768 /* RX pipe enable */
2769 topctrl_writel(priv
, 0, RX_FLUSH_CNTL
);
2771 ret
= rdma_enable_set(priv
, 1);
2773 netdev_err(dev
, "failed to enable RDMA\n");
2774 goto out_free_rx_ring
;
2777 /* Restore enabled features */
2778 bcm_sysport_set_features(dev
, dev
->features
);
2782 /* Set maximum frame length */
2784 umac_writel(priv
, UMAC_MAX_MTU_SIZE
, UMAC_MAX_FRAME_LEN
);
2786 gib_set_pad_extension(priv
);
2788 /* Set MAC address */
2789 umac_set_hw_addr(priv
, dev
->dev_addr
);
2791 umac_enable_set(priv
, CMD_RX_EN
, 1);
2793 /* TX pipe enable */
2794 topctrl_writel(priv
, 0, TX_FLUSH_CNTL
);
2796 umac_enable_set(priv
, CMD_TX_EN
, 1);
2798 ret
= tdma_enable_set(priv
, 1);
2800 netdev_err(dev
, "TDMA timeout!\n");
2801 goto out_free_rx_ring
;
2804 phy_resume(dev
->phydev
);
2806 bcm_sysport_netif_start(dev
);
2808 netif_device_attach(dev
);
2813 bcm_sysport_fini_rx_ring(priv
);
2815 for (i
= 0; i
< dev
->num_tx_queues
; i
++)
2816 bcm_sysport_fini_tx_ring(priv
, i
);
2820 static SIMPLE_DEV_PM_OPS(bcm_sysport_pm_ops
,
2821 bcm_sysport_suspend
, bcm_sysport_resume
);
2823 static struct platform_driver bcm_sysport_driver
= {
2824 .probe
= bcm_sysport_probe
,
2825 .remove
= bcm_sysport_remove
,
2827 .name
= "brcm-systemport",
2828 .of_match_table
= bcm_sysport_of_match
,
2829 .pm
= &bcm_sysport_pm_ops
,
2832 module_platform_driver(bcm_sysport_driver
);
2834 MODULE_AUTHOR("Broadcom Corporation");
2835 MODULE_DESCRIPTION("Broadcom System Port Ethernet MAC driver");
2836 MODULE_ALIAS("platform:brcm-systemport");
2837 MODULE_LICENSE("GPL");