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25763b3c | 1 | // SPDX-License-Identifier: GPL-2.0-only |
dac2f83f KH |
2 | /* |
3 | * Intel IXP4xx Ethernet driver for Linux | |
4 | * | |
5 | * Copyright (C) 2007 Krzysztof Halasa <khc@pm.waw.pl> | |
6 | * | |
dac2f83f KH |
7 | * Ethernet port config (0x00 is not present on IXP42X): |
8 | * | |
9 | * logical port 0x00 0x10 0x20 | |
10 | * NPE 0 (NPE-A) 1 (NPE-B) 2 (NPE-C) | |
11 | * physical PortId 2 0 1 | |
12 | * TX queue 23 24 25 | |
13 | * RX-free queue 26 27 28 | |
14 | * TX-done queue is always 31, per-port RX and TX-ready queues are configurable | |
15 | * | |
dac2f83f KH |
16 | * Queue entries: |
17 | * bits 0 -> 1 - NPE ID (RX and TX-done) | |
18 | * bits 0 -> 2 - priority (TX, per 802.1D) | |
19 | * bits 3 -> 4 - port ID (user-set?) | |
20 | * bits 5 -> 31 - physical descriptor address | |
21 | */ | |
22 | ||
23 | #include <linux/delay.h> | |
24 | #include <linux/dma-mapping.h> | |
25 | #include <linux/dmapool.h> | |
26 | #include <linux/etherdevice.h> | |
27 | #include <linux/io.h> | |
28 | #include <linux/kernel.h> | |
32bd93e8 | 29 | #include <linux/net_tstamp.h> |
9540724c | 30 | #include <linux/of.h> |
95aafe91 | 31 | #include <linux/of_mdio.h> |
2098c18d | 32 | #include <linux/phy.h> |
a41a5b26 | 33 | #include <linux/platform_data/eth_ixp4xx.h> |
dac2f83f | 34 | #include <linux/platform_device.h> |
32bd93e8 | 35 | #include <linux/ptp_classify.h> |
5a0e3ad6 | 36 | #include <linux/slab.h> |
9d9779e7 | 37 | #include <linux/module.h> |
4af20dc5 LW |
38 | #include <linux/soc/ixp4xx/npe.h> |
39 | #include <linux/soc/ixp4xx/qmgr.h> | |
d5d9f7ac | 40 | #include <mach/hardware.h> |
09aa9aab | 41 | #include <linux/soc/ixp4xx/cpu.h> |
dac2f83f | 42 | |
2785543f AB |
43 | #include "ixp46x_ts.h" |
44 | ||
dac2f83f KH |
45 | #define DEBUG_DESC 0 |
46 | #define DEBUG_RX 0 | |
47 | #define DEBUG_TX 0 | |
48 | #define DEBUG_PKT_BYTES 0 | |
49 | #define DEBUG_MDIO 0 | |
50 | #define DEBUG_CLOSE 0 | |
51 | ||
52 | #define DRV_NAME "ixp4xx_eth" | |
53 | ||
54 | #define MAX_NPES 3 | |
55 | ||
56 | #define RX_DESCS 64 /* also length of all RX queues */ | |
57 | #define TX_DESCS 16 /* also length of all TX queues */ | |
58 | #define TXDONE_QUEUE_LEN 64 /* dwords */ | |
59 | ||
60 | #define POOL_ALLOC_SIZE (sizeof(struct desc) * (RX_DESCS + TX_DESCS)) | |
61 | #define REGS_SIZE 0x1000 | |
62 | #define MAX_MRU 1536 /* 0x600 */ | |
63 | #define RX_BUFF_SIZE ALIGN((NET_IP_ALIGN) + MAX_MRU, 4) | |
64 | ||
65 | #define NAPI_WEIGHT 16 | |
66 | #define MDIO_INTERVAL (3 * HZ) | |
67 | #define MAX_MDIO_RETRIES 100 /* microseconds, typically 30 cycles */ | |
dac2f83f KH |
68 | #define MAX_CLOSE_WAIT 1000 /* microseconds, typically 2-3 cycles */ |
69 | ||
70 | #define NPE_ID(port_id) ((port_id) >> 4) | |
71 | #define PHYSICAL_ID(port_id) ((NPE_ID(port_id) + 2) % 3) | |
72 | #define TX_QUEUE(port_id) (NPE_ID(port_id) + 23) | |
73 | #define RXFREE_QUEUE(port_id) (NPE_ID(port_id) + 26) | |
74 | #define TXDONE_QUEUE 31 | |
75 | ||
32bd93e8 RC |
76 | #define PTP_SLAVE_MODE 1 |
77 | #define PTP_MASTER_MODE 2 | |
78 | #define PORT2CHANNEL(p) NPE_ID(p->id) | |
79 | ||
dac2f83f KH |
80 | /* TX Control Registers */ |
81 | #define TX_CNTRL0_TX_EN 0x01 | |
82 | #define TX_CNTRL0_HALFDUPLEX 0x02 | |
83 | #define TX_CNTRL0_RETRY 0x04 | |
84 | #define TX_CNTRL0_PAD_EN 0x08 | |
85 | #define TX_CNTRL0_APPEND_FCS 0x10 | |
86 | #define TX_CNTRL0_2DEFER 0x20 | |
87 | #define TX_CNTRL0_RMII 0x40 /* reduced MII */ | |
88 | #define TX_CNTRL1_RETRIES 0x0F /* 4 bits */ | |
89 | ||
90 | /* RX Control Registers */ | |
91 | #define RX_CNTRL0_RX_EN 0x01 | |
92 | #define RX_CNTRL0_PADSTRIP_EN 0x02 | |
93 | #define RX_CNTRL0_SEND_FCS 0x04 | |
94 | #define RX_CNTRL0_PAUSE_EN 0x08 | |
95 | #define RX_CNTRL0_LOOP_EN 0x10 | |
96 | #define RX_CNTRL0_ADDR_FLTR_EN 0x20 | |
97 | #define RX_CNTRL0_RX_RUNT_EN 0x40 | |
98 | #define RX_CNTRL0_BCAST_DIS 0x80 | |
99 | #define RX_CNTRL1_DEFER_EN 0x01 | |
100 | ||
101 | /* Core Control Register */ | |
102 | #define CORE_RESET 0x01 | |
103 | #define CORE_RX_FIFO_FLUSH 0x02 | |
104 | #define CORE_TX_FIFO_FLUSH 0x04 | |
105 | #define CORE_SEND_JAM 0x08 | |
106 | #define CORE_MDC_EN 0x10 /* MDIO using NPE-B ETH-0 only */ | |
107 | ||
108 | #define DEFAULT_TX_CNTRL0 (TX_CNTRL0_TX_EN | TX_CNTRL0_RETRY | \ | |
109 | TX_CNTRL0_PAD_EN | TX_CNTRL0_APPEND_FCS | \ | |
110 | TX_CNTRL0_2DEFER) | |
111 | #define DEFAULT_RX_CNTRL0 RX_CNTRL0_RX_EN | |
112 | #define DEFAULT_CORE_CNTRL CORE_MDC_EN | |
113 | ||
114 | ||
115 | /* NPE message codes */ | |
116 | #define NPE_GETSTATUS 0x00 | |
117 | #define NPE_EDB_SETPORTADDRESS 0x01 | |
118 | #define NPE_EDB_GETMACADDRESSDATABASE 0x02 | |
119 | #define NPE_EDB_SETMACADDRESSSDATABASE 0x03 | |
120 | #define NPE_GETSTATS 0x04 | |
121 | #define NPE_RESETSTATS 0x05 | |
122 | #define NPE_SETMAXFRAMELENGTHS 0x06 | |
123 | #define NPE_VLAN_SETRXTAGMODE 0x07 | |
124 | #define NPE_VLAN_SETDEFAULTRXVID 0x08 | |
125 | #define NPE_VLAN_SETPORTVLANTABLEENTRY 0x09 | |
126 | #define NPE_VLAN_SETPORTVLANTABLERANGE 0x0A | |
127 | #define NPE_VLAN_SETRXQOSENTRY 0x0B | |
128 | #define NPE_VLAN_SETPORTIDEXTRACTIONMODE 0x0C | |
129 | #define NPE_STP_SETBLOCKINGSTATE 0x0D | |
130 | #define NPE_FW_SETFIREWALLMODE 0x0E | |
131 | #define NPE_PC_SETFRAMECONTROLDURATIONID 0x0F | |
132 | #define NPE_PC_SETAPMACTABLE 0x11 | |
133 | #define NPE_SETLOOPBACK_MODE 0x12 | |
134 | #define NPE_PC_SETBSSIDTABLE 0x13 | |
135 | #define NPE_ADDRESS_FILTER_CONFIG 0x14 | |
136 | #define NPE_APPENDFCSCONFIG 0x15 | |
137 | #define NPE_NOTIFY_MAC_RECOVERY_DONE 0x16 | |
138 | #define NPE_MAC_RECOVERY_START 0x17 | |
139 | ||
140 | ||
141 | #ifdef __ARMEB__ | |
142 | typedef struct sk_buff buffer_t; | |
143 | #define free_buffer dev_kfree_skb | |
88e42584 | 144 | #define free_buffer_irq dev_consume_skb_irq |
dac2f83f KH |
145 | #else |
146 | typedef void buffer_t; | |
147 | #define free_buffer kfree | |
148 | #define free_buffer_irq kfree | |
149 | #endif | |
150 | ||
151 | struct eth_regs { | |
152 | u32 tx_control[2], __res1[2]; /* 000 */ | |
153 | u32 rx_control[2], __res2[2]; /* 010 */ | |
154 | u32 random_seed, __res3[3]; /* 020 */ | |
155 | u32 partial_empty_threshold, __res4; /* 030 */ | |
156 | u32 partial_full_threshold, __res5; /* 038 */ | |
157 | u32 tx_start_bytes, __res6[3]; /* 040 */ | |
158 | u32 tx_deferral, rx_deferral, __res7[2];/* 050 */ | |
159 | u32 tx_2part_deferral[2], __res8[2]; /* 060 */ | |
160 | u32 slot_time, __res9[3]; /* 070 */ | |
161 | u32 mdio_command[4]; /* 080 */ | |
162 | u32 mdio_status[4]; /* 090 */ | |
163 | u32 mcast_mask[6], __res10[2]; /* 0A0 */ | |
164 | u32 mcast_addr[6], __res11[2]; /* 0C0 */ | |
165 | u32 int_clock_threshold, __res12[3]; /* 0E0 */ | |
166 | u32 hw_addr[6], __res13[61]; /* 0F0 */ | |
167 | u32 core_control; /* 1FC */ | |
168 | }; | |
169 | ||
170 | struct port { | |
dac2f83f KH |
171 | struct eth_regs __iomem *regs; |
172 | struct npe *npe; | |
173 | struct net_device *netdev; | |
174 | struct napi_struct napi; | |
dac2f83f KH |
175 | struct eth_plat_info *plat; |
176 | buffer_t *rx_buff_tab[RX_DESCS], *tx_buff_tab[TX_DESCS]; | |
177 | struct desc *desc_tab; /* coherent */ | |
178 | u32 desc_tab_phys; | |
179 | int id; /* logical port ID */ | |
2098c18d | 180 | int speed, duplex; |
490b7722 | 181 | u8 firmware[4]; |
32bd93e8 RC |
182 | int hwts_tx_en; |
183 | int hwts_rx_en; | |
dac2f83f KH |
184 | }; |
185 | ||
186 | /* NPE message structure */ | |
187 | struct msg { | |
188 | #ifdef __ARMEB__ | |
189 | u8 cmd, eth_id, byte2, byte3; | |
190 | u8 byte4, byte5, byte6, byte7; | |
191 | #else | |
192 | u8 byte3, byte2, eth_id, cmd; | |
193 | u8 byte7, byte6, byte5, byte4; | |
194 | #endif | |
195 | }; | |
196 | ||
197 | /* Ethernet packet descriptor */ | |
198 | struct desc { | |
199 | u32 next; /* pointer to next buffer, unused */ | |
200 | ||
201 | #ifdef __ARMEB__ | |
202 | u16 buf_len; /* buffer length */ | |
203 | u16 pkt_len; /* packet length */ | |
204 | u32 data; /* pointer to data buffer in RAM */ | |
205 | u8 dest_id; | |
206 | u8 src_id; | |
207 | u16 flags; | |
208 | u8 qos; | |
209 | u8 padlen; | |
210 | u16 vlan_tci; | |
211 | #else | |
212 | u16 pkt_len; /* packet length */ | |
213 | u16 buf_len; /* buffer length */ | |
214 | u32 data; /* pointer to data buffer in RAM */ | |
215 | u16 flags; | |
216 | u8 src_id; | |
217 | u8 dest_id; | |
218 | u16 vlan_tci; | |
219 | u8 padlen; | |
220 | u8 qos; | |
221 | #endif | |
222 | ||
223 | #ifdef __ARMEB__ | |
224 | u8 dst_mac_0, dst_mac_1, dst_mac_2, dst_mac_3; | |
225 | u8 dst_mac_4, dst_mac_5, src_mac_0, src_mac_1; | |
226 | u8 src_mac_2, src_mac_3, src_mac_4, src_mac_5; | |
227 | #else | |
228 | u8 dst_mac_3, dst_mac_2, dst_mac_1, dst_mac_0; | |
229 | u8 src_mac_1, src_mac_0, dst_mac_5, dst_mac_4; | |
230 | u8 src_mac_5, src_mac_4, src_mac_3, src_mac_2; | |
231 | #endif | |
232 | }; | |
233 | ||
234 | ||
235 | #define rx_desc_phys(port, n) ((port)->desc_tab_phys + \ | |
236 | (n) * sizeof(struct desc)) | |
237 | #define rx_desc_ptr(port, n) (&(port)->desc_tab[n]) | |
238 | ||
239 | #define tx_desc_phys(port, n) ((port)->desc_tab_phys + \ | |
240 | ((n) + RX_DESCS) * sizeof(struct desc)) | |
241 | #define tx_desc_ptr(port, n) (&(port)->desc_tab[(n) + RX_DESCS]) | |
242 | ||
243 | #ifndef __ARMEB__ | |
244 | static inline void memcpy_swab32(u32 *dest, u32 *src, int cnt) | |
245 | { | |
246 | int i; | |
247 | for (i = 0; i < cnt; i++) | |
248 | dest[i] = swab32(src[i]); | |
249 | } | |
250 | #endif | |
251 | ||
1454c51d | 252 | static DEFINE_SPINLOCK(mdio_lock); |
dac2f83f | 253 | static struct eth_regs __iomem *mdio_regs; /* mdio command and status only */ |
0409cb0d | 254 | static struct mii_bus *mdio_bus; |
95aafe91 | 255 | static struct device_node *mdio_bus_np; |
dac2f83f KH |
256 | static int ports_open; |
257 | static struct port *npe_port_tab[MAX_NPES]; | |
258 | static struct dma_pool *dma_pool; | |
259 | ||
32bd93e8 RC |
260 | static int ixp_ptp_match(struct sk_buff *skb, u16 uid_hi, u32 uid_lo, u16 seqid) |
261 | { | |
262 | u8 *data = skb->data; | |
263 | unsigned int offset; | |
264 | u16 *hi, *id; | |
265 | u32 lo; | |
266 | ||
164d8c66 | 267 | if (ptp_classify_raw(skb) != PTP_CLASS_V1_IPV4) |
32bd93e8 RC |
268 | return 0; |
269 | ||
270 | offset = ETH_HLEN + IPV4_HLEN(data) + UDP_HLEN; | |
271 | ||
272 | if (skb->len < offset + OFF_PTP_SEQUENCE_ID + sizeof(seqid)) | |
273 | return 0; | |
274 | ||
275 | hi = (u16 *)(data + offset + OFF_PTP_SOURCE_UUID); | |
276 | id = (u16 *)(data + offset + OFF_PTP_SEQUENCE_ID); | |
277 | ||
278 | memcpy(&lo, &hi[1], sizeof(lo)); | |
279 | ||
280 | return (uid_hi == ntohs(*hi) && | |
281 | uid_lo == ntohl(lo) && | |
282 | seqid == ntohs(*id)); | |
283 | } | |
284 | ||
285 | static void ixp_rx_timestamp(struct port *port, struct sk_buff *skb) | |
286 | { | |
287 | struct skb_shared_hwtstamps *shhwtstamps; | |
288 | struct ixp46x_ts_regs *regs; | |
289 | u64 ns; | |
290 | u32 ch, hi, lo, val; | |
291 | u16 uid, seq; | |
292 | ||
293 | if (!port->hwts_rx_en) | |
294 | return; | |
295 | ||
296 | ch = PORT2CHANNEL(port); | |
297 | ||
298 | regs = (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT; | |
299 | ||
300 | val = __raw_readl(®s->channel[ch].ch_event); | |
301 | ||
302 | if (!(val & RX_SNAPSHOT_LOCKED)) | |
303 | return; | |
304 | ||
305 | lo = __raw_readl(®s->channel[ch].src_uuid_lo); | |
306 | hi = __raw_readl(®s->channel[ch].src_uuid_hi); | |
307 | ||
308 | uid = hi & 0xffff; | |
309 | seq = (hi >> 16) & 0xffff; | |
310 | ||
311 | if (!ixp_ptp_match(skb, htons(uid), htonl(lo), htons(seq))) | |
312 | goto out; | |
313 | ||
314 | lo = __raw_readl(®s->channel[ch].rx_snap_lo); | |
315 | hi = __raw_readl(®s->channel[ch].rx_snap_hi); | |
316 | ns = ((u64) hi) << 32; | |
317 | ns |= lo; | |
318 | ns <<= TICKS_NS_SHIFT; | |
319 | ||
320 | shhwtstamps = skb_hwtstamps(skb); | |
321 | memset(shhwtstamps, 0, sizeof(*shhwtstamps)); | |
322 | shhwtstamps->hwtstamp = ns_to_ktime(ns); | |
323 | out: | |
324 | __raw_writel(RX_SNAPSHOT_LOCKED, ®s->channel[ch].ch_event); | |
325 | } | |
326 | ||
327 | static void ixp_tx_timestamp(struct port *port, struct sk_buff *skb) | |
328 | { | |
329 | struct skb_shared_hwtstamps shhwtstamps; | |
330 | struct ixp46x_ts_regs *regs; | |
331 | struct skb_shared_info *shtx; | |
332 | u64 ns; | |
333 | u32 ch, cnt, hi, lo, val; | |
334 | ||
335 | shtx = skb_shinfo(skb); | |
336 | if (unlikely(shtx->tx_flags & SKBTX_HW_TSTAMP && port->hwts_tx_en)) | |
337 | shtx->tx_flags |= SKBTX_IN_PROGRESS; | |
338 | else | |
339 | return; | |
340 | ||
341 | ch = PORT2CHANNEL(port); | |
342 | ||
343 | regs = (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT; | |
344 | ||
345 | /* | |
346 | * This really stinks, but we have to poll for the Tx time stamp. | |
347 | * Usually, the time stamp is ready after 4 to 6 microseconds. | |
348 | */ | |
349 | for (cnt = 0; cnt < 100; cnt++) { | |
350 | val = __raw_readl(®s->channel[ch].ch_event); | |
351 | if (val & TX_SNAPSHOT_LOCKED) | |
352 | break; | |
353 | udelay(1); | |
354 | } | |
355 | if (!(val & TX_SNAPSHOT_LOCKED)) { | |
356 | shtx->tx_flags &= ~SKBTX_IN_PROGRESS; | |
357 | return; | |
358 | } | |
359 | ||
360 | lo = __raw_readl(®s->channel[ch].tx_snap_lo); | |
361 | hi = __raw_readl(®s->channel[ch].tx_snap_hi); | |
362 | ns = ((u64) hi) << 32; | |
363 | ns |= lo; | |
364 | ns <<= TICKS_NS_SHIFT; | |
365 | ||
366 | memset(&shhwtstamps, 0, sizeof(shhwtstamps)); | |
367 | shhwtstamps.hwtstamp = ns_to_ktime(ns); | |
368 | skb_tstamp_tx(skb, &shhwtstamps); | |
369 | ||
370 | __raw_writel(TX_SNAPSHOT_LOCKED, ®s->channel[ch].ch_event); | |
371 | } | |
372 | ||
81fc347a | 373 | static int hwtstamp_set(struct net_device *netdev, struct ifreq *ifr) |
32bd93e8 RC |
374 | { |
375 | struct hwtstamp_config cfg; | |
376 | struct ixp46x_ts_regs *regs; | |
377 | struct port *port = netdev_priv(netdev); | |
378 | int ch; | |
379 | ||
380 | if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg))) | |
381 | return -EFAULT; | |
382 | ||
383 | if (cfg.flags) /* reserved for future extensions */ | |
384 | return -EINVAL; | |
385 | ||
386 | ch = PORT2CHANNEL(port); | |
387 | regs = (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT; | |
388 | ||
a5be8cd3 | 389 | if (cfg.tx_type != HWTSTAMP_TX_OFF && cfg.tx_type != HWTSTAMP_TX_ON) |
32bd93e8 | 390 | return -ERANGE; |
32bd93e8 RC |
391 | |
392 | switch (cfg.rx_filter) { | |
393 | case HWTSTAMP_FILTER_NONE: | |
394 | port->hwts_rx_en = 0; | |
395 | break; | |
396 | case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: | |
397 | port->hwts_rx_en = PTP_SLAVE_MODE; | |
398 | __raw_writel(0, ®s->channel[ch].ch_control); | |
399 | break; | |
400 | case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: | |
401 | port->hwts_rx_en = PTP_MASTER_MODE; | |
402 | __raw_writel(MASTER_MODE, ®s->channel[ch].ch_control); | |
403 | break; | |
404 | default: | |
405 | return -ERANGE; | |
406 | } | |
407 | ||
a5be8cd3 BH |
408 | port->hwts_tx_en = cfg.tx_type == HWTSTAMP_TX_ON; |
409 | ||
32bd93e8 RC |
410 | /* Clear out any old time stamps. */ |
411 | __raw_writel(TX_SNAPSHOT_LOCKED | RX_SNAPSHOT_LOCKED, | |
412 | ®s->channel[ch].ch_event); | |
413 | ||
414 | return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0; | |
415 | } | |
dac2f83f | 416 | |
81fc347a BH |
417 | static int hwtstamp_get(struct net_device *netdev, struct ifreq *ifr) |
418 | { | |
419 | struct hwtstamp_config cfg; | |
420 | struct port *port = netdev_priv(netdev); | |
421 | ||
422 | cfg.flags = 0; | |
423 | cfg.tx_type = port->hwts_tx_en ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF; | |
424 | ||
425 | switch (port->hwts_rx_en) { | |
426 | case 0: | |
427 | cfg.rx_filter = HWTSTAMP_FILTER_NONE; | |
428 | break; | |
429 | case PTP_SLAVE_MODE: | |
430 | cfg.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_SYNC; | |
431 | break; | |
432 | case PTP_MASTER_MODE: | |
433 | cfg.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ; | |
434 | break; | |
435 | default: | |
436 | WARN_ON_ONCE(1); | |
437 | return -ERANGE; | |
438 | } | |
439 | ||
440 | return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0; | |
441 | } | |
442 | ||
2098c18d KH |
443 | static int ixp4xx_mdio_cmd(struct mii_bus *bus, int phy_id, int location, |
444 | int write, u16 cmd) | |
dac2f83f KH |
445 | { |
446 | int cycles = 0; | |
447 | ||
448 | if (__raw_readl(&mdio_regs->mdio_command[3]) & 0x80) { | |
2098c18d KH |
449 | printk(KERN_ERR "%s: MII not ready to transmit\n", bus->name); |
450 | return -1; | |
dac2f83f KH |
451 | } |
452 | ||
453 | if (write) { | |
454 | __raw_writel(cmd & 0xFF, &mdio_regs->mdio_command[0]); | |
455 | __raw_writel(cmd >> 8, &mdio_regs->mdio_command[1]); | |
456 | } | |
457 | __raw_writel(((phy_id << 5) | location) & 0xFF, | |
458 | &mdio_regs->mdio_command[2]); | |
459 | __raw_writel((phy_id >> 3) | (write << 2) | 0x80 /* GO */, | |
460 | &mdio_regs->mdio_command[3]); | |
461 | ||
462 | while ((cycles < MAX_MDIO_RETRIES) && | |
463 | (__raw_readl(&mdio_regs->mdio_command[3]) & 0x80)) { | |
464 | udelay(1); | |
465 | cycles++; | |
466 | } | |
467 | ||
468 | if (cycles == MAX_MDIO_RETRIES) { | |
2098c18d KH |
469 | printk(KERN_ERR "%s #%i: MII write failed\n", bus->name, |
470 | phy_id); | |
471 | return -1; | |
dac2f83f KH |
472 | } |
473 | ||
474 | #if DEBUG_MDIO | |
2098c18d KH |
475 | printk(KERN_DEBUG "%s #%i: mdio_%s() took %i cycles\n", bus->name, |
476 | phy_id, write ? "write" : "read", cycles); | |
dac2f83f KH |
477 | #endif |
478 | ||
479 | if (write) | |
480 | return 0; | |
481 | ||
482 | if (__raw_readl(&mdio_regs->mdio_status[3]) & 0x80) { | |
2098c18d KH |
483 | #if DEBUG_MDIO |
484 | printk(KERN_DEBUG "%s #%i: MII read failed\n", bus->name, | |
485 | phy_id); | |
486 | #endif | |
487 | return 0xFFFF; /* don't return error */ | |
dac2f83f KH |
488 | } |
489 | ||
490 | return (__raw_readl(&mdio_regs->mdio_status[0]) & 0xFF) | | |
2098c18d | 491 | ((__raw_readl(&mdio_regs->mdio_status[1]) & 0xFF) << 8); |
dac2f83f KH |
492 | } |
493 | ||
2098c18d | 494 | static int ixp4xx_mdio_read(struct mii_bus *bus, int phy_id, int location) |
dac2f83f KH |
495 | { |
496 | unsigned long flags; | |
2098c18d | 497 | int ret; |
dac2f83f KH |
498 | |
499 | spin_lock_irqsave(&mdio_lock, flags); | |
2098c18d | 500 | ret = ixp4xx_mdio_cmd(bus, phy_id, location, 0, 0); |
dac2f83f | 501 | spin_unlock_irqrestore(&mdio_lock, flags); |
2098c18d KH |
502 | #if DEBUG_MDIO |
503 | printk(KERN_DEBUG "%s #%i: MII read [%i] -> 0x%X\n", bus->name, | |
504 | phy_id, location, ret); | |
505 | #endif | |
506 | return ret; | |
dac2f83f KH |
507 | } |
508 | ||
2098c18d KH |
509 | static int ixp4xx_mdio_write(struct mii_bus *bus, int phy_id, int location, |
510 | u16 val) | |
dac2f83f KH |
511 | { |
512 | unsigned long flags; | |
2098c18d | 513 | int ret; |
dac2f83f KH |
514 | |
515 | spin_lock_irqsave(&mdio_lock, flags); | |
2098c18d | 516 | ret = ixp4xx_mdio_cmd(bus, phy_id, location, 1, val); |
dac2f83f | 517 | spin_unlock_irqrestore(&mdio_lock, flags); |
2098c18d | 518 | #if DEBUG_MDIO |
8ae45a53 | 519 | printk(KERN_DEBUG "%s #%i: MII write [%i] <- 0x%X, err = %i\n", |
2098c18d KH |
520 | bus->name, phy_id, location, val, ret); |
521 | #endif | |
522 | return ret; | |
dac2f83f KH |
523 | } |
524 | ||
c83db9ef | 525 | static int ixp4xx_mdio_register(struct eth_regs __iomem *regs) |
dac2f83f | 526 | { |
2098c18d | 527 | int err; |
dac2f83f | 528 | |
2098c18d KH |
529 | if (!(mdio_bus = mdiobus_alloc())) |
530 | return -ENOMEM; | |
dac2f83f | 531 | |
c83db9ef | 532 | mdio_regs = regs; |
5ca328d2 | 533 | __raw_writel(DEFAULT_CORE_CNTRL, &mdio_regs->core_control); |
2098c18d KH |
534 | mdio_bus->name = "IXP4xx MII Bus"; |
535 | mdio_bus->read = &ixp4xx_mdio_read; | |
536 | mdio_bus->write = &ixp4xx_mdio_write; | |
0869b3a4 | 537 | snprintf(mdio_bus->id, MII_BUS_ID_SIZE, "ixp4xx-eth-0"); |
dac2f83f | 538 | |
95aafe91 LW |
539 | err = of_mdiobus_register(mdio_bus, mdio_bus_np); |
540 | if (err) | |
2098c18d KH |
541 | mdiobus_free(mdio_bus); |
542 | return err; | |
dac2f83f KH |
543 | } |
544 | ||
2098c18d | 545 | static void ixp4xx_mdio_remove(void) |
dac2f83f | 546 | { |
2098c18d KH |
547 | mdiobus_unregister(mdio_bus); |
548 | mdiobus_free(mdio_bus); | |
dac2f83f KH |
549 | } |
550 | ||
551 | ||
2098c18d | 552 | static void ixp4xx_adjust_link(struct net_device *dev) |
dac2f83f | 553 | { |
2098c18d | 554 | struct port *port = netdev_priv(dev); |
2a62416d | 555 | struct phy_device *phydev = dev->phydev; |
2098c18d KH |
556 | |
557 | if (!phydev->link) { | |
558 | if (port->speed) { | |
559 | port->speed = 0; | |
dac2f83f | 560 | printk(KERN_INFO "%s: link down\n", dev->name); |
dac2f83f | 561 | } |
2098c18d | 562 | return; |
dac2f83f | 563 | } |
dac2f83f | 564 | |
2098c18d KH |
565 | if (port->speed == phydev->speed && port->duplex == phydev->duplex) |
566 | return; | |
dac2f83f | 567 | |
2098c18d KH |
568 | port->speed = phydev->speed; |
569 | port->duplex = phydev->duplex; | |
dac2f83f | 570 | |
2098c18d KH |
571 | if (port->duplex) |
572 | __raw_writel(DEFAULT_TX_CNTRL0 & ~TX_CNTRL0_HALFDUPLEX, | |
573 | &port->regs->tx_control[0]); | |
574 | else | |
575 | __raw_writel(DEFAULT_TX_CNTRL0 | TX_CNTRL0_HALFDUPLEX, | |
576 | &port->regs->tx_control[0]); | |
dac2f83f | 577 | |
3cb5b0ee LW |
578 | netdev_info(dev, "%s: link up, speed %u Mb/s, %s duplex\n", |
579 | dev->name, port->speed, port->duplex ? "full" : "half"); | |
dac2f83f KH |
580 | } |
581 | ||
582 | ||
583 | static inline void debug_pkt(struct net_device *dev, const char *func, | |
584 | u8 *data, int len) | |
585 | { | |
586 | #if DEBUG_PKT_BYTES | |
587 | int i; | |
588 | ||
3cb5b0ee | 589 | netdev_debug(dev, "%s(%i) ", func, len); |
dac2f83f KH |
590 | for (i = 0; i < len; i++) { |
591 | if (i >= DEBUG_PKT_BYTES) | |
592 | break; | |
593 | printk("%s%02X", | |
594 | ((i == 6) || (i == 12) || (i >= 14)) ? " " : "", | |
595 | data[i]); | |
596 | } | |
597 | printk("\n"); | |
598 | #endif | |
599 | } | |
600 | ||
601 | ||
602 | static inline void debug_desc(u32 phys, struct desc *desc) | |
603 | { | |
604 | #if DEBUG_DESC | |
605 | printk(KERN_DEBUG "%X: %X %3X %3X %08X %2X < %2X %4X %X" | |
606 | " %X %X %02X%02X%02X%02X%02X%02X < %02X%02X%02X%02X%02X%02X\n", | |
607 | phys, desc->next, desc->buf_len, desc->pkt_len, | |
608 | desc->data, desc->dest_id, desc->src_id, desc->flags, | |
609 | desc->qos, desc->padlen, desc->vlan_tci, | |
610 | desc->dst_mac_0, desc->dst_mac_1, desc->dst_mac_2, | |
611 | desc->dst_mac_3, desc->dst_mac_4, desc->dst_mac_5, | |
612 | desc->src_mac_0, desc->src_mac_1, desc->src_mac_2, | |
613 | desc->src_mac_3, desc->src_mac_4, desc->src_mac_5); | |
614 | #endif | |
615 | } | |
616 | ||
dac2f83f KH |
617 | static inline int queue_get_desc(unsigned int queue, struct port *port, |
618 | int is_tx) | |
619 | { | |
620 | u32 phys, tab_phys, n_desc; | |
621 | struct desc *tab; | |
622 | ||
e6da96ac | 623 | if (!(phys = qmgr_get_entry(queue))) |
dac2f83f KH |
624 | return -1; |
625 | ||
626 | phys &= ~0x1F; /* mask out non-address bits */ | |
627 | tab_phys = is_tx ? tx_desc_phys(port, 0) : rx_desc_phys(port, 0); | |
628 | tab = is_tx ? tx_desc_ptr(port, 0) : rx_desc_ptr(port, 0); | |
629 | n_desc = (phys - tab_phys) / sizeof(struct desc); | |
630 | BUG_ON(n_desc >= (is_tx ? TX_DESCS : RX_DESCS)); | |
631 | debug_desc(phys, &tab[n_desc]); | |
632 | BUG_ON(tab[n_desc].next); | |
633 | return n_desc; | |
634 | } | |
635 | ||
636 | static inline void queue_put_desc(unsigned int queue, u32 phys, | |
637 | struct desc *desc) | |
638 | { | |
dac2f83f KH |
639 | debug_desc(phys, desc); |
640 | BUG_ON(phys & 0x1F); | |
641 | qmgr_put_entry(queue, phys); | |
6a68afe3 KH |
642 | /* Don't check for queue overflow here, we've allocated sufficient |
643 | length and queues >= 32 don't support this check anyway. */ | |
dac2f83f KH |
644 | } |
645 | ||
646 | ||
647 | static inline void dma_unmap_tx(struct port *port, struct desc *desc) | |
648 | { | |
649 | #ifdef __ARMEB__ | |
650 | dma_unmap_single(&port->netdev->dev, desc->data, | |
651 | desc->buf_len, DMA_TO_DEVICE); | |
652 | #else | |
653 | dma_unmap_single(&port->netdev->dev, desc->data & ~3, | |
654 | ALIGN((desc->data & 3) + desc->buf_len, 4), | |
655 | DMA_TO_DEVICE); | |
656 | #endif | |
657 | } | |
658 | ||
659 | ||
660 | static void eth_rx_irq(void *pdev) | |
661 | { | |
662 | struct net_device *dev = pdev; | |
663 | struct port *port = netdev_priv(dev); | |
664 | ||
665 | #if DEBUG_RX | |
666 | printk(KERN_DEBUG "%s: eth_rx_irq\n", dev->name); | |
667 | #endif | |
668 | qmgr_disable_irq(port->plat->rxq); | |
288379f0 | 669 | napi_schedule(&port->napi); |
dac2f83f KH |
670 | } |
671 | ||
672 | static int eth_poll(struct napi_struct *napi, int budget) | |
673 | { | |
674 | struct port *port = container_of(napi, struct port, napi); | |
675 | struct net_device *dev = port->netdev; | |
676 | unsigned int rxq = port->plat->rxq, rxfreeq = RXFREE_QUEUE(port->id); | |
677 | int received = 0; | |
678 | ||
679 | #if DEBUG_RX | |
3cb5b0ee | 680 | netdev_debug(dev, "eth_poll\n"); |
dac2f83f KH |
681 | #endif |
682 | ||
683 | while (received < budget) { | |
684 | struct sk_buff *skb; | |
685 | struct desc *desc; | |
686 | int n; | |
687 | #ifdef __ARMEB__ | |
688 | struct sk_buff *temp; | |
689 | u32 phys; | |
690 | #endif | |
691 | ||
692 | if ((n = queue_get_desc(rxq, port, 0)) < 0) { | |
dac2f83f | 693 | #if DEBUG_RX |
3cb5b0ee | 694 | netdev_debug(dev, "eth_poll napi_complete\n"); |
dac2f83f | 695 | #endif |
288379f0 | 696 | napi_complete(napi); |
dac2f83f | 697 | qmgr_enable_irq(rxq); |
9733bb8e KH |
698 | if (!qmgr_stat_below_low_watermark(rxq) && |
699 | napi_reschedule(napi)) { /* not empty again */ | |
dac2f83f | 700 | #if DEBUG_RX |
3cb5b0ee | 701 | netdev_debug(dev, "eth_poll napi_reschedule succeeded\n"); |
dac2f83f KH |
702 | #endif |
703 | qmgr_disable_irq(rxq); | |
704 | continue; | |
705 | } | |
706 | #if DEBUG_RX | |
3cb5b0ee | 707 | netdev_debug(dev, "eth_poll all done\n"); |
dac2f83f | 708 | #endif |
9076689a | 709 | return received; /* all work done */ |
dac2f83f KH |
710 | } |
711 | ||
712 | desc = rx_desc_ptr(port, n); | |
713 | ||
714 | #ifdef __ARMEB__ | |
715 | if ((skb = netdev_alloc_skb(dev, RX_BUFF_SIZE))) { | |
716 | phys = dma_map_single(&dev->dev, skb->data, | |
717 | RX_BUFF_SIZE, DMA_FROM_DEVICE); | |
7144decb | 718 | if (dma_mapping_error(&dev->dev, phys)) { |
dac2f83f KH |
719 | dev_kfree_skb(skb); |
720 | skb = NULL; | |
721 | } | |
722 | } | |
723 | #else | |
724 | skb = netdev_alloc_skb(dev, | |
725 | ALIGN(NET_IP_ALIGN + desc->pkt_len, 4)); | |
726 | #endif | |
727 | ||
728 | if (!skb) { | |
b4c7d3b0 | 729 | dev->stats.rx_dropped++; |
dac2f83f KH |
730 | /* put the desc back on RX-ready queue */ |
731 | desc->buf_len = MAX_MRU; | |
732 | desc->pkt_len = 0; | |
733 | queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc); | |
734 | continue; | |
735 | } | |
736 | ||
737 | /* process received frame */ | |
738 | #ifdef __ARMEB__ | |
739 | temp = skb; | |
740 | skb = port->rx_buff_tab[n]; | |
741 | dma_unmap_single(&dev->dev, desc->data - NET_IP_ALIGN, | |
742 | RX_BUFF_SIZE, DMA_FROM_DEVICE); | |
743 | #else | |
5d23a1d2 FT |
744 | dma_sync_single_for_cpu(&dev->dev, desc->data - NET_IP_ALIGN, |
745 | RX_BUFF_SIZE, DMA_FROM_DEVICE); | |
dac2f83f KH |
746 | memcpy_swab32((u32 *)skb->data, (u32 *)port->rx_buff_tab[n], |
747 | ALIGN(NET_IP_ALIGN + desc->pkt_len, 4) / 4); | |
748 | #endif | |
749 | skb_reserve(skb, NET_IP_ALIGN); | |
750 | skb_put(skb, desc->pkt_len); | |
751 | ||
752 | debug_pkt(dev, "eth_poll", skb->data, skb->len); | |
753 | ||
32bd93e8 | 754 | ixp_rx_timestamp(port, skb); |
dac2f83f | 755 | skb->protocol = eth_type_trans(skb, dev); |
b4c7d3b0 KH |
756 | dev->stats.rx_packets++; |
757 | dev->stats.rx_bytes += skb->len; | |
dac2f83f KH |
758 | netif_receive_skb(skb); |
759 | ||
760 | /* put the new buffer on RX-free queue */ | |
761 | #ifdef __ARMEB__ | |
762 | port->rx_buff_tab[n] = temp; | |
763 | desc->data = phys + NET_IP_ALIGN; | |
764 | #endif | |
765 | desc->buf_len = MAX_MRU; | |
766 | desc->pkt_len = 0; | |
767 | queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc); | |
768 | received++; | |
769 | } | |
770 | ||
771 | #if DEBUG_RX | |
3cb5b0ee | 772 | netdev_debug(dev, "eth_poll(): end, not all work done\n"); |
dac2f83f KH |
773 | #endif |
774 | return received; /* not all work done */ | |
775 | } | |
776 | ||
777 | ||
778 | static void eth_txdone_irq(void *unused) | |
779 | { | |
780 | u32 phys; | |
781 | ||
782 | #if DEBUG_TX | |
783 | printk(KERN_DEBUG DRV_NAME ": eth_txdone_irq\n"); | |
784 | #endif | |
e6da96ac | 785 | while ((phys = qmgr_get_entry(TXDONE_QUEUE)) != 0) { |
dac2f83f KH |
786 | u32 npe_id, n_desc; |
787 | struct port *port; | |
788 | struct desc *desc; | |
789 | int start; | |
790 | ||
791 | npe_id = phys & 3; | |
792 | BUG_ON(npe_id >= MAX_NPES); | |
793 | port = npe_port_tab[npe_id]; | |
794 | BUG_ON(!port); | |
795 | phys &= ~0x1F; /* mask out non-address bits */ | |
796 | n_desc = (phys - tx_desc_phys(port, 0)) / sizeof(struct desc); | |
797 | BUG_ON(n_desc >= TX_DESCS); | |
798 | desc = tx_desc_ptr(port, n_desc); | |
799 | debug_desc(phys, desc); | |
800 | ||
801 | if (port->tx_buff_tab[n_desc]) { /* not the draining packet */ | |
b4c7d3b0 KH |
802 | port->netdev->stats.tx_packets++; |
803 | port->netdev->stats.tx_bytes += desc->pkt_len; | |
dac2f83f KH |
804 | |
805 | dma_unmap_tx(port, desc); | |
806 | #if DEBUG_TX | |
807 | printk(KERN_DEBUG "%s: eth_txdone_irq free %p\n", | |
808 | port->netdev->name, port->tx_buff_tab[n_desc]); | |
809 | #endif | |
810 | free_buffer_irq(port->tx_buff_tab[n_desc]); | |
811 | port->tx_buff_tab[n_desc] = NULL; | |
812 | } | |
813 | ||
9733bb8e | 814 | start = qmgr_stat_below_low_watermark(port->plat->txreadyq); |
dac2f83f | 815 | queue_put_desc(port->plat->txreadyq, phys, desc); |
9733bb8e | 816 | if (start) { /* TX-ready queue was empty */ |
dac2f83f KH |
817 | #if DEBUG_TX |
818 | printk(KERN_DEBUG "%s: eth_txdone_irq xmit ready\n", | |
819 | port->netdev->name); | |
820 | #endif | |
821 | netif_wake_queue(port->netdev); | |
822 | } | |
823 | } | |
824 | } | |
825 | ||
826 | static int eth_xmit(struct sk_buff *skb, struct net_device *dev) | |
827 | { | |
828 | struct port *port = netdev_priv(dev); | |
829 | unsigned int txreadyq = port->plat->txreadyq; | |
830 | int len, offset, bytes, n; | |
831 | void *mem; | |
832 | u32 phys; | |
833 | struct desc *desc; | |
834 | ||
835 | #if DEBUG_TX | |
3cb5b0ee | 836 | netdev_debug(dev, "eth_xmit\n"); |
dac2f83f KH |
837 | #endif |
838 | ||
839 | if (unlikely(skb->len > MAX_MRU)) { | |
840 | dev_kfree_skb(skb); | |
b4c7d3b0 | 841 | dev->stats.tx_errors++; |
dac2f83f KH |
842 | return NETDEV_TX_OK; |
843 | } | |
844 | ||
845 | debug_pkt(dev, "eth_xmit", skb->data, skb->len); | |
846 | ||
847 | len = skb->len; | |
848 | #ifdef __ARMEB__ | |
849 | offset = 0; /* no need to keep alignment */ | |
850 | bytes = len; | |
851 | mem = skb->data; | |
852 | #else | |
853 | offset = (int)skb->data & 3; /* keep 32-bit alignment */ | |
854 | bytes = ALIGN(offset + len, 4); | |
855 | if (!(mem = kmalloc(bytes, GFP_ATOMIC))) { | |
856 | dev_kfree_skb(skb); | |
b4c7d3b0 | 857 | dev->stats.tx_dropped++; |
dac2f83f KH |
858 | return NETDEV_TX_OK; |
859 | } | |
860 | memcpy_swab32(mem, (u32 *)((int)skb->data & ~3), bytes / 4); | |
dac2f83f KH |
861 | #endif |
862 | ||
863 | phys = dma_map_single(&dev->dev, mem, bytes, DMA_TO_DEVICE); | |
7144decb | 864 | if (dma_mapping_error(&dev->dev, phys)) { |
dac2f83f | 865 | dev_kfree_skb(skb); |
32bd93e8 | 866 | #ifndef __ARMEB__ |
dac2f83f KH |
867 | kfree(mem); |
868 | #endif | |
b4c7d3b0 | 869 | dev->stats.tx_dropped++; |
dac2f83f KH |
870 | return NETDEV_TX_OK; |
871 | } | |
872 | ||
873 | n = queue_get_desc(txreadyq, port, 1); | |
874 | BUG_ON(n < 0); | |
875 | desc = tx_desc_ptr(port, n); | |
876 | ||
877 | #ifdef __ARMEB__ | |
878 | port->tx_buff_tab[n] = skb; | |
879 | #else | |
880 | port->tx_buff_tab[n] = mem; | |
881 | #endif | |
882 | desc->data = phys + offset; | |
883 | desc->buf_len = desc->pkt_len = len; | |
884 | ||
885 | /* NPE firmware pads short frames with zeros internally */ | |
886 | wmb(); | |
887 | queue_put_desc(TX_QUEUE(port->id), tx_desc_phys(port, n), desc); | |
dac2f83f | 888 | |
9733bb8e | 889 | if (qmgr_stat_below_low_watermark(txreadyq)) { /* empty */ |
dac2f83f | 890 | #if DEBUG_TX |
3cb5b0ee | 891 | netdev_debug(dev, "eth_xmit queue full\n"); |
dac2f83f KH |
892 | #endif |
893 | netif_stop_queue(dev); | |
894 | /* we could miss TX ready interrupt */ | |
6a68afe3 | 895 | /* really empty in fact */ |
9733bb8e | 896 | if (!qmgr_stat_below_low_watermark(txreadyq)) { |
dac2f83f | 897 | #if DEBUG_TX |
3cb5b0ee | 898 | netdev_debug(dev, "eth_xmit ready again\n"); |
dac2f83f KH |
899 | #endif |
900 | netif_wake_queue(dev); | |
901 | } | |
902 | } | |
903 | ||
904 | #if DEBUG_TX | |
3cb5b0ee | 905 | netdev_debug(dev, "eth_xmit end\n"); |
dac2f83f | 906 | #endif |
32bd93e8 RC |
907 | |
908 | ixp_tx_timestamp(port, skb); | |
909 | skb_tx_timestamp(skb); | |
910 | ||
911 | #ifndef __ARMEB__ | |
912 | dev_kfree_skb(skb); | |
913 | #endif | |
dac2f83f KH |
914 | return NETDEV_TX_OK; |
915 | } | |
916 | ||
917 | ||
dac2f83f KH |
918 | static void eth_set_mcast_list(struct net_device *dev) |
919 | { | |
920 | struct port *port = netdev_priv(dev); | |
22bedad3 | 921 | struct netdev_hw_addr *ha; |
dac2f83f | 922 | u8 diffs[ETH_ALEN], *addr; |
3b9a7728 | 923 | int i; |
95e3bb7a RC |
924 | static const u8 allmulti[] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 }; |
925 | ||
f81edc6a | 926 | if ((dev->flags & IFF_ALLMULTI) && !(dev->flags & IFF_PROMISC)) { |
95e3bb7a RC |
927 | for (i = 0; i < ETH_ALEN; i++) { |
928 | __raw_writel(allmulti[i], &port->regs->mcast_addr[i]); | |
929 | __raw_writel(allmulti[i], &port->regs->mcast_mask[i]); | |
930 | } | |
931 | __raw_writel(DEFAULT_RX_CNTRL0 | RX_CNTRL0_ADDR_FLTR_EN, | |
932 | &port->regs->rx_control[0]); | |
933 | return; | |
934 | } | |
dac2f83f | 935 | |
3b9a7728 | 936 | if ((dev->flags & IFF_PROMISC) || netdev_mc_empty(dev)) { |
dac2f83f KH |
937 | __raw_writel(DEFAULT_RX_CNTRL0 & ~RX_CNTRL0_ADDR_FLTR_EN, |
938 | &port->regs->rx_control[0]); | |
939 | return; | |
940 | } | |
941 | ||
c7bf7169 | 942 | eth_zero_addr(diffs); |
dac2f83f | 943 | |
3b9a7728 | 944 | addr = NULL; |
22bedad3 | 945 | netdev_for_each_mc_addr(ha, dev) { |
3b9a7728 | 946 | if (!addr) |
22bedad3 | 947 | addr = ha->addr; /* first MAC address */ |
dac2f83f | 948 | for (i = 0; i < ETH_ALEN; i++) |
22bedad3 | 949 | diffs[i] |= addr[i] ^ ha->addr[i]; |
3b9a7728 | 950 | } |
dac2f83f KH |
951 | |
952 | for (i = 0; i < ETH_ALEN; i++) { | |
953 | __raw_writel(addr[i], &port->regs->mcast_addr[i]); | |
954 | __raw_writel(~diffs[i], &port->regs->mcast_mask[i]); | |
955 | } | |
956 | ||
957 | __raw_writel(DEFAULT_RX_CNTRL0 | RX_CNTRL0_ADDR_FLTR_EN, | |
958 | &port->regs->rx_control[0]); | |
959 | } | |
960 | ||
961 | ||
962 | static int eth_ioctl(struct net_device *dev, struct ifreq *req, int cmd) | |
963 | { | |
dac2f83f KH |
964 | if (!netif_running(dev)) |
965 | return -EINVAL; | |
28b04113 | 966 | |
81fc347a BH |
967 | if (cpu_is_ixp46x()) { |
968 | if (cmd == SIOCSHWTSTAMP) | |
969 | return hwtstamp_set(dev, req); | |
970 | if (cmd == SIOCGHWTSTAMP) | |
971 | return hwtstamp_get(dev, req); | |
972 | } | |
32bd93e8 | 973 | |
2a62416d | 974 | return phy_mii_ioctl(dev->phydev, req, cmd); |
dac2f83f KH |
975 | } |
976 | ||
490b7722 KH |
977 | /* ethtool support */ |
978 | ||
979 | static void ixp4xx_get_drvinfo(struct net_device *dev, | |
980 | struct ethtool_drvinfo *info) | |
981 | { | |
982 | struct port *port = netdev_priv(dev); | |
7826d43f JP |
983 | |
984 | strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); | |
490b7722 KH |
985 | snprintf(info->fw_version, sizeof(info->fw_version), "%u:%u:%u:%u", |
986 | port->firmware[0], port->firmware[1], | |
987 | port->firmware[2], port->firmware[3]); | |
7826d43f | 988 | strlcpy(info->bus_info, "internal", sizeof(info->bus_info)); |
dac2f83f KH |
989 | } |
990 | ||
509a7c25 | 991 | int ixp46x_phc_index = -1; |
8b82f7c3 | 992 | EXPORT_SYMBOL_GPL(ixp46x_phc_index); |
509a7c25 RC |
993 | |
994 | static int ixp4xx_get_ts_info(struct net_device *dev, | |
995 | struct ethtool_ts_info *info) | |
996 | { | |
997 | if (!cpu_is_ixp46x()) { | |
998 | info->so_timestamping = | |
999 | SOF_TIMESTAMPING_TX_SOFTWARE | | |
1000 | SOF_TIMESTAMPING_RX_SOFTWARE | | |
1001 | SOF_TIMESTAMPING_SOFTWARE; | |
1002 | info->phc_index = -1; | |
1003 | return 0; | |
1004 | } | |
1005 | info->so_timestamping = | |
1006 | SOF_TIMESTAMPING_TX_HARDWARE | | |
1007 | SOF_TIMESTAMPING_RX_HARDWARE | | |
1008 | SOF_TIMESTAMPING_RAW_HARDWARE; | |
1009 | info->phc_index = ixp46x_phc_index; | |
1010 | info->tx_types = | |
1011 | (1 << HWTSTAMP_TX_OFF) | | |
1012 | (1 << HWTSTAMP_TX_ON); | |
1013 | info->rx_filters = | |
1014 | (1 << HWTSTAMP_FILTER_NONE) | | |
1015 | (1 << HWTSTAMP_FILTER_PTP_V1_L4_SYNC) | | |
1016 | (1 << HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ); | |
1017 | return 0; | |
1018 | } | |
1019 | ||
0fc0b732 | 1020 | static const struct ethtool_ops ixp4xx_ethtool_ops = { |
490b7722 | 1021 | .get_drvinfo = ixp4xx_get_drvinfo, |
17fc4637 | 1022 | .nway_reset = phy_ethtool_nway_reset, |
490b7722 | 1023 | .get_link = ethtool_op_get_link, |
509a7c25 | 1024 | .get_ts_info = ixp4xx_get_ts_info, |
fa018484 PR |
1025 | .get_link_ksettings = phy_ethtool_get_link_ksettings, |
1026 | .set_link_ksettings = phy_ethtool_set_link_ksettings, | |
490b7722 KH |
1027 | }; |
1028 | ||
dac2f83f KH |
1029 | |
1030 | static int request_queues(struct port *port) | |
1031 | { | |
1032 | int err; | |
1033 | ||
e6da96ac | 1034 | err = qmgr_request_queue(RXFREE_QUEUE(port->id), RX_DESCS, 0, 0, |
2e418400 | 1035 | "%s:RX-free", port->netdev->name); |
dac2f83f KH |
1036 | if (err) |
1037 | return err; | |
1038 | ||
e6da96ac | 1039 | err = qmgr_request_queue(port->plat->rxq, RX_DESCS, 0, 0, |
2e418400 | 1040 | "%s:RX", port->netdev->name); |
dac2f83f KH |
1041 | if (err) |
1042 | goto rel_rxfree; | |
1043 | ||
e6da96ac | 1044 | err = qmgr_request_queue(TX_QUEUE(port->id), TX_DESCS, 0, 0, |
2e418400 | 1045 | "%s:TX", port->netdev->name); |
dac2f83f KH |
1046 | if (err) |
1047 | goto rel_rx; | |
1048 | ||
e6da96ac | 1049 | err = qmgr_request_queue(port->plat->txreadyq, TX_DESCS, 0, 0, |
2e418400 | 1050 | "%s:TX-ready", port->netdev->name); |
dac2f83f KH |
1051 | if (err) |
1052 | goto rel_tx; | |
1053 | ||
1054 | /* TX-done queue handles skbs sent out by the NPEs */ | |
1055 | if (!ports_open) { | |
e6da96ac | 1056 | err = qmgr_request_queue(TXDONE_QUEUE, TXDONE_QUEUE_LEN, 0, 0, |
2e418400 | 1057 | "%s:TX-done", DRV_NAME); |
dac2f83f KH |
1058 | if (err) |
1059 | goto rel_txready; | |
1060 | } | |
1061 | return 0; | |
1062 | ||
1063 | rel_txready: | |
1064 | qmgr_release_queue(port->plat->txreadyq); | |
1065 | rel_tx: | |
1066 | qmgr_release_queue(TX_QUEUE(port->id)); | |
1067 | rel_rx: | |
1068 | qmgr_release_queue(port->plat->rxq); | |
1069 | rel_rxfree: | |
1070 | qmgr_release_queue(RXFREE_QUEUE(port->id)); | |
1071 | printk(KERN_DEBUG "%s: unable to request hardware queues\n", | |
1072 | port->netdev->name); | |
1073 | return err; | |
1074 | } | |
1075 | ||
1076 | static void release_queues(struct port *port) | |
1077 | { | |
1078 | qmgr_release_queue(RXFREE_QUEUE(port->id)); | |
1079 | qmgr_release_queue(port->plat->rxq); | |
1080 | qmgr_release_queue(TX_QUEUE(port->id)); | |
1081 | qmgr_release_queue(port->plat->txreadyq); | |
1082 | ||
1083 | if (!ports_open) | |
1084 | qmgr_release_queue(TXDONE_QUEUE); | |
1085 | } | |
1086 | ||
1087 | static int init_queues(struct port *port) | |
1088 | { | |
1089 | int i; | |
1090 | ||
1a490117 | 1091 | if (!ports_open) { |
8d892d60 | 1092 | dma_pool = dma_pool_create(DRV_NAME, &port->netdev->dev, |
1a490117 XW |
1093 | POOL_ALLOC_SIZE, 32, 0); |
1094 | if (!dma_pool) | |
dac2f83f | 1095 | return -ENOMEM; |
1a490117 | 1096 | } |
dac2f83f KH |
1097 | |
1098 | if (!(port->desc_tab = dma_pool_alloc(dma_pool, GFP_KERNEL, | |
1099 | &port->desc_tab_phys))) | |
1100 | return -ENOMEM; | |
1101 | memset(port->desc_tab, 0, POOL_ALLOC_SIZE); | |
1102 | memset(port->rx_buff_tab, 0, sizeof(port->rx_buff_tab)); /* tables */ | |
1103 | memset(port->tx_buff_tab, 0, sizeof(port->tx_buff_tab)); | |
1104 | ||
1105 | /* Setup RX buffers */ | |
1106 | for (i = 0; i < RX_DESCS; i++) { | |
1107 | struct desc *desc = rx_desc_ptr(port, i); | |
1108 | buffer_t *buff; /* skb or kmalloc()ated memory */ | |
1109 | void *data; | |
1110 | #ifdef __ARMEB__ | |
1111 | if (!(buff = netdev_alloc_skb(port->netdev, RX_BUFF_SIZE))) | |
1112 | return -ENOMEM; | |
1113 | data = buff->data; | |
1114 | #else | |
1115 | if (!(buff = kmalloc(RX_BUFF_SIZE, GFP_KERNEL))) | |
1116 | return -ENOMEM; | |
1117 | data = buff; | |
1118 | #endif | |
1119 | desc->buf_len = MAX_MRU; | |
1120 | desc->data = dma_map_single(&port->netdev->dev, data, | |
1121 | RX_BUFF_SIZE, DMA_FROM_DEVICE); | |
7144decb | 1122 | if (dma_mapping_error(&port->netdev->dev, desc->data)) { |
dac2f83f KH |
1123 | free_buffer(buff); |
1124 | return -EIO; | |
1125 | } | |
1126 | desc->data += NET_IP_ALIGN; | |
1127 | port->rx_buff_tab[i] = buff; | |
1128 | } | |
1129 | ||
1130 | return 0; | |
1131 | } | |
1132 | ||
1133 | static void destroy_queues(struct port *port) | |
1134 | { | |
1135 | int i; | |
1136 | ||
1137 | if (port->desc_tab) { | |
1138 | for (i = 0; i < RX_DESCS; i++) { | |
1139 | struct desc *desc = rx_desc_ptr(port, i); | |
1140 | buffer_t *buff = port->rx_buff_tab[i]; | |
1141 | if (buff) { | |
1142 | dma_unmap_single(&port->netdev->dev, | |
1143 | desc->data - NET_IP_ALIGN, | |
1144 | RX_BUFF_SIZE, DMA_FROM_DEVICE); | |
1145 | free_buffer(buff); | |
1146 | } | |
1147 | } | |
1148 | for (i = 0; i < TX_DESCS; i++) { | |
1149 | struct desc *desc = tx_desc_ptr(port, i); | |
1150 | buffer_t *buff = port->tx_buff_tab[i]; | |
1151 | if (buff) { | |
1152 | dma_unmap_tx(port, desc); | |
1153 | free_buffer(buff); | |
1154 | } | |
1155 | } | |
1156 | dma_pool_free(dma_pool, port->desc_tab, port->desc_tab_phys); | |
1157 | port->desc_tab = NULL; | |
1158 | } | |
1159 | ||
1160 | if (!ports_open && dma_pool) { | |
1161 | dma_pool_destroy(dma_pool); | |
1162 | dma_pool = NULL; | |
1163 | } | |
1164 | } | |
1165 | ||
1166 | static int eth_open(struct net_device *dev) | |
1167 | { | |
1168 | struct port *port = netdev_priv(dev); | |
1169 | struct npe *npe = port->npe; | |
1170 | struct msg msg; | |
1171 | int i, err; | |
1172 | ||
1173 | if (!npe_running(npe)) { | |
1174 | err = npe_load_firmware(npe, npe_name(npe), &dev->dev); | |
1175 | if (err) | |
1176 | return err; | |
1177 | ||
1178 | if (npe_recv_message(npe, &msg, "ETH_GET_STATUS")) { | |
3cb5b0ee | 1179 | netdev_err(dev, "%s not responding\n", npe_name(npe)); |
dac2f83f KH |
1180 | return -EIO; |
1181 | } | |
490b7722 KH |
1182 | port->firmware[0] = msg.byte4; |
1183 | port->firmware[1] = msg.byte5; | |
1184 | port->firmware[2] = msg.byte6; | |
1185 | port->firmware[3] = msg.byte7; | |
dac2f83f KH |
1186 | } |
1187 | ||
dac2f83f KH |
1188 | memset(&msg, 0, sizeof(msg)); |
1189 | msg.cmd = NPE_VLAN_SETRXQOSENTRY; | |
1190 | msg.eth_id = port->id; | |
1191 | msg.byte5 = port->plat->rxq | 0x80; | |
1192 | msg.byte7 = port->plat->rxq << 4; | |
1193 | for (i = 0; i < 8; i++) { | |
1194 | msg.byte3 = i; | |
1195 | if (npe_send_recv_message(port->npe, &msg, "ETH_SET_RXQ")) | |
1196 | return -EIO; | |
1197 | } | |
1198 | ||
1199 | msg.cmd = NPE_EDB_SETPORTADDRESS; | |
1200 | msg.eth_id = PHYSICAL_ID(port->id); | |
1201 | msg.byte2 = dev->dev_addr[0]; | |
1202 | msg.byte3 = dev->dev_addr[1]; | |
1203 | msg.byte4 = dev->dev_addr[2]; | |
1204 | msg.byte5 = dev->dev_addr[3]; | |
1205 | msg.byte6 = dev->dev_addr[4]; | |
1206 | msg.byte7 = dev->dev_addr[5]; | |
1207 | if (npe_send_recv_message(port->npe, &msg, "ETH_SET_MAC")) | |
1208 | return -EIO; | |
1209 | ||
1210 | memset(&msg, 0, sizeof(msg)); | |
1211 | msg.cmd = NPE_FW_SETFIREWALLMODE; | |
1212 | msg.eth_id = port->id; | |
1213 | if (npe_send_recv_message(port->npe, &msg, "ETH_SET_FIREWALL_MODE")) | |
1214 | return -EIO; | |
1215 | ||
1216 | if ((err = request_queues(port)) != 0) | |
1217 | return err; | |
1218 | ||
1219 | if ((err = init_queues(port)) != 0) { | |
1220 | destroy_queues(port); | |
1221 | release_queues(port); | |
1222 | return err; | |
1223 | } | |
1224 | ||
2098c18d | 1225 | port->speed = 0; /* force "link up" message */ |
2a62416d | 1226 | phy_start(dev->phydev); |
2098c18d | 1227 | |
dac2f83f KH |
1228 | for (i = 0; i < ETH_ALEN; i++) |
1229 | __raw_writel(dev->dev_addr[i], &port->regs->hw_addr[i]); | |
1230 | __raw_writel(0x08, &port->regs->random_seed); | |
1231 | __raw_writel(0x12, &port->regs->partial_empty_threshold); | |
1232 | __raw_writel(0x30, &port->regs->partial_full_threshold); | |
1233 | __raw_writel(0x08, &port->regs->tx_start_bytes); | |
1234 | __raw_writel(0x15, &port->regs->tx_deferral); | |
1235 | __raw_writel(0x08, &port->regs->tx_2part_deferral[0]); | |
1236 | __raw_writel(0x07, &port->regs->tx_2part_deferral[1]); | |
1237 | __raw_writel(0x80, &port->regs->slot_time); | |
1238 | __raw_writel(0x01, &port->regs->int_clock_threshold); | |
1239 | ||
1240 | /* Populate queues with buffers, no failure after this point */ | |
1241 | for (i = 0; i < TX_DESCS; i++) | |
1242 | queue_put_desc(port->plat->txreadyq, | |
1243 | tx_desc_phys(port, i), tx_desc_ptr(port, i)); | |
1244 | ||
1245 | for (i = 0; i < RX_DESCS; i++) | |
1246 | queue_put_desc(RXFREE_QUEUE(port->id), | |
1247 | rx_desc_phys(port, i), rx_desc_ptr(port, i)); | |
1248 | ||
1249 | __raw_writel(TX_CNTRL1_RETRIES, &port->regs->tx_control[1]); | |
1250 | __raw_writel(DEFAULT_TX_CNTRL0, &port->regs->tx_control[0]); | |
1251 | __raw_writel(0, &port->regs->rx_control[1]); | |
1252 | __raw_writel(DEFAULT_RX_CNTRL0, &port->regs->rx_control[0]); | |
1253 | ||
1254 | napi_enable(&port->napi); | |
dac2f83f KH |
1255 | eth_set_mcast_list(dev); |
1256 | netif_start_queue(dev); | |
dac2f83f KH |
1257 | |
1258 | qmgr_set_irq(port->plat->rxq, QUEUE_IRQ_SRC_NOT_EMPTY, | |
1259 | eth_rx_irq, dev); | |
1260 | if (!ports_open) { | |
1261 | qmgr_set_irq(TXDONE_QUEUE, QUEUE_IRQ_SRC_NOT_EMPTY, | |
1262 | eth_txdone_irq, NULL); | |
1263 | qmgr_enable_irq(TXDONE_QUEUE); | |
1264 | } | |
1265 | ports_open++; | |
1266 | /* we may already have RX data, enables IRQ */ | |
288379f0 | 1267 | napi_schedule(&port->napi); |
dac2f83f KH |
1268 | return 0; |
1269 | } | |
1270 | ||
1271 | static int eth_close(struct net_device *dev) | |
1272 | { | |
1273 | struct port *port = netdev_priv(dev); | |
1274 | struct msg msg; | |
1275 | int buffs = RX_DESCS; /* allocated RX buffers */ | |
1276 | int i; | |
1277 | ||
1278 | ports_open--; | |
1279 | qmgr_disable_irq(port->plat->rxq); | |
1280 | napi_disable(&port->napi); | |
1281 | netif_stop_queue(dev); | |
1282 | ||
1283 | while (queue_get_desc(RXFREE_QUEUE(port->id), port, 0) >= 0) | |
1284 | buffs--; | |
1285 | ||
1286 | memset(&msg, 0, sizeof(msg)); | |
1287 | msg.cmd = NPE_SETLOOPBACK_MODE; | |
1288 | msg.eth_id = port->id; | |
1289 | msg.byte3 = 1; | |
1290 | if (npe_send_recv_message(port->npe, &msg, "ETH_ENABLE_LOOPBACK")) | |
3cb5b0ee | 1291 | netdev_crit(dev, "unable to enable loopback\n"); |
dac2f83f KH |
1292 | |
1293 | i = 0; | |
1294 | do { /* drain RX buffers */ | |
1295 | while (queue_get_desc(port->plat->rxq, port, 0) >= 0) | |
1296 | buffs--; | |
1297 | if (!buffs) | |
1298 | break; | |
1299 | if (qmgr_stat_empty(TX_QUEUE(port->id))) { | |
1300 | /* we have to inject some packet */ | |
1301 | struct desc *desc; | |
1302 | u32 phys; | |
1303 | int n = queue_get_desc(port->plat->txreadyq, port, 1); | |
1304 | BUG_ON(n < 0); | |
1305 | desc = tx_desc_ptr(port, n); | |
1306 | phys = tx_desc_phys(port, n); | |
1307 | desc->buf_len = desc->pkt_len = 1; | |
1308 | wmb(); | |
1309 | queue_put_desc(TX_QUEUE(port->id), phys, desc); | |
1310 | } | |
1311 | udelay(1); | |
1312 | } while (++i < MAX_CLOSE_WAIT); | |
1313 | ||
1314 | if (buffs) | |
3cb5b0ee LW |
1315 | netdev_crit(dev, "unable to drain RX queue, %i buffer(s)" |
1316 | " left in NPE\n", buffs); | |
dac2f83f KH |
1317 | #if DEBUG_CLOSE |
1318 | if (!buffs) | |
3cb5b0ee | 1319 | netdev_debug(dev, "draining RX queue took %i cycles\n", i); |
dac2f83f KH |
1320 | #endif |
1321 | ||
1322 | buffs = TX_DESCS; | |
1323 | while (queue_get_desc(TX_QUEUE(port->id), port, 1) >= 0) | |
1324 | buffs--; /* cancel TX */ | |
1325 | ||
1326 | i = 0; | |
1327 | do { | |
1328 | while (queue_get_desc(port->plat->txreadyq, port, 1) >= 0) | |
1329 | buffs--; | |
1330 | if (!buffs) | |
1331 | break; | |
1332 | } while (++i < MAX_CLOSE_WAIT); | |
1333 | ||
1334 | if (buffs) | |
3cb5b0ee LW |
1335 | netdev_crit(dev, "unable to drain TX queue, %i buffer(s) " |
1336 | "left in NPE\n", buffs); | |
dac2f83f KH |
1337 | #if DEBUG_CLOSE |
1338 | if (!buffs) | |
3cb5b0ee | 1339 | netdev_debug(dev, "draining TX queues took %i cycles\n", i); |
dac2f83f KH |
1340 | #endif |
1341 | ||
1342 | msg.byte3 = 0; | |
1343 | if (npe_send_recv_message(port->npe, &msg, "ETH_DISABLE_LOOPBACK")) | |
3cb5b0ee | 1344 | netdev_crit(dev, "unable to disable loopback\n"); |
dac2f83f | 1345 | |
2a62416d | 1346 | phy_stop(dev->phydev); |
dac2f83f KH |
1347 | |
1348 | if (!ports_open) | |
1349 | qmgr_disable_irq(TXDONE_QUEUE); | |
dac2f83f KH |
1350 | destroy_queues(port); |
1351 | release_queues(port); | |
1352 | return 0; | |
1353 | } | |
1354 | ||
59f8500e KH |
1355 | static const struct net_device_ops ixp4xx_netdev_ops = { |
1356 | .ndo_open = eth_open, | |
1357 | .ndo_stop = eth_close, | |
1358 | .ndo_start_xmit = eth_xmit, | |
afc4b13d | 1359 | .ndo_set_rx_mode = eth_set_mcast_list, |
a7605370 | 1360 | .ndo_eth_ioctl = eth_ioctl, |
240c102d BH |
1361 | .ndo_set_mac_address = eth_mac_addr, |
1362 | .ndo_validate_addr = eth_validate_addr, | |
59f8500e KH |
1363 | }; |
1364 | ||
95aafe91 LW |
1365 | #ifdef CONFIG_OF |
1366 | static struct eth_plat_info *ixp4xx_of_get_platdata(struct device *dev) | |
1367 | { | |
1368 | struct device_node *np = dev->of_node; | |
1369 | struct of_phandle_args queue_spec; | |
1370 | struct of_phandle_args npe_spec; | |
1371 | struct device_node *mdio_np; | |
1372 | struct eth_plat_info *plat; | |
1373 | int ret; | |
1374 | ||
1375 | plat = devm_kzalloc(dev, sizeof(*plat), GFP_KERNEL); | |
1376 | if (!plat) | |
1377 | return NULL; | |
1378 | ||
1379 | ret = of_parse_phandle_with_fixed_args(np, "intel,npe-handle", 1, 0, | |
1380 | &npe_spec); | |
1381 | if (ret) { | |
1382 | dev_err(dev, "no NPE engine specified\n"); | |
1383 | return NULL; | |
1384 | } | |
1385 | /* NPE ID 0x00, 0x10, 0x20... */ | |
1386 | plat->npe = (npe_spec.args[0] << 4); | |
1387 | ||
1388 | /* Check if this device has an MDIO bus */ | |
1389 | mdio_np = of_get_child_by_name(np, "mdio"); | |
1390 | if (mdio_np) { | |
1391 | plat->has_mdio = true; | |
1392 | mdio_bus_np = mdio_np; | |
1393 | /* DO NOT put the mdio_np, it will be used */ | |
1394 | } | |
1395 | ||
1396 | /* Get the rx queue as a resource from queue manager */ | |
1397 | ret = of_parse_phandle_with_fixed_args(np, "queue-rx", 1, 0, | |
1398 | &queue_spec); | |
1399 | if (ret) { | |
1400 | dev_err(dev, "no rx queue phandle\n"); | |
1401 | return NULL; | |
1402 | } | |
1403 | plat->rxq = queue_spec.args[0]; | |
1404 | ||
1405 | /* Get the txready queue as resource from queue manager */ | |
1406 | ret = of_parse_phandle_with_fixed_args(np, "queue-txready", 1, 0, | |
1407 | &queue_spec); | |
1408 | if (ret) { | |
1409 | dev_err(dev, "no txready queue phandle\n"); | |
1410 | return NULL; | |
1411 | } | |
1412 | plat->txreadyq = queue_spec.args[0]; | |
1413 | ||
1414 | return plat; | |
1415 | } | |
1416 | #else | |
1417 | static struct eth_plat_info *ixp4xx_of_get_platdata(struct device *dev) | |
1418 | { | |
1419 | return NULL; | |
1420 | } | |
1421 | #endif | |
1422 | ||
c83db9ef | 1423 | static int ixp4xx_eth_probe(struct platform_device *pdev) |
dac2f83f | 1424 | { |
2a62416d | 1425 | struct phy_device *phydev = NULL; |
d813d7e5 | 1426 | struct device *dev = &pdev->dev; |
95aafe91 | 1427 | struct device_node *np = dev->of_node; |
d813d7e5 LW |
1428 | struct eth_plat_info *plat; |
1429 | struct net_device *ndev; | |
1430 | struct port *port; | |
dac2f83f KH |
1431 | int err; |
1432 | ||
95aafe91 LW |
1433 | if (np) { |
1434 | plat = ixp4xx_of_get_platdata(dev); | |
1435 | if (!plat) | |
1436 | return -ENODEV; | |
1437 | } else { | |
1438 | plat = dev_get_platdata(dev); | |
1439 | if (!plat) | |
1440 | return -ENODEV; | |
1441 | plat->npe = pdev->id; | |
1442 | switch (plat->npe) { | |
1443 | case IXP4XX_ETH_NPEA: | |
1444 | /* If the MDIO bus is not up yet, defer probe */ | |
1445 | break; | |
1446 | case IXP4XX_ETH_NPEB: | |
1447 | /* On all except IXP43x, NPE-B is used for the MDIO bus. | |
1448 | * If there is no NPE-B in the feature set, bail out, | |
1449 | * else we have the MDIO bus here. | |
1450 | */ | |
1451 | if (!cpu_is_ixp43x()) { | |
1452 | if (!(ixp4xx_read_feature_bits() & | |
1453 | IXP4XX_FEATURE_NPEB_ETH0)) | |
1454 | return -ENODEV; | |
1455 | /* Else register the MDIO bus on NPE-B */ | |
1456 | plat->has_mdio = true; | |
1457 | } | |
1458 | break; | |
1459 | case IXP4XX_ETH_NPEC: | |
1460 | /* IXP43x lacks NPE-B and uses NPE-C for the MDIO bus | |
1461 | * access, if there is no NPE-C, no bus, nothing works, | |
1462 | * so bail out. | |
1463 | */ | |
1464 | if (cpu_is_ixp43x()) { | |
1465 | if (!(ixp4xx_read_feature_bits() & | |
1466 | IXP4XX_FEATURE_NPEC_ETH)) | |
1467 | return -ENODEV; | |
1468 | /* Else register the MDIO bus on NPE-B */ | |
1469 | plat->has_mdio = true; | |
1470 | } | |
1471 | break; | |
1472 | default: | |
1473 | return -ENODEV; | |
1474 | } | |
1475 | } | |
d813d7e5 LW |
1476 | |
1477 | if (!(ndev = devm_alloc_etherdev(dev, sizeof(struct port)))) | |
dac2f83f KH |
1478 | return -ENOMEM; |
1479 | ||
d813d7e5 LW |
1480 | SET_NETDEV_DEV(ndev, dev); |
1481 | port = netdev_priv(ndev); | |
1482 | port->netdev = ndev; | |
95aafe91 | 1483 | port->id = plat->npe; |
dac2f83f | 1484 | |
f458ac47 | 1485 | /* Get the port resource and remap */ |
ec89c2b5 | 1486 | port->regs = devm_platform_get_and_ioremap_resource(pdev, 0, NULL); |
6ed79cec TB |
1487 | if (IS_ERR(port->regs)) |
1488 | return PTR_ERR(port->regs); | |
f458ac47 | 1489 | |
95aafe91 LW |
1490 | /* Register the MDIO bus if we have it */ |
1491 | if (plat->has_mdio) { | |
1492 | err = ixp4xx_mdio_register(port->regs); | |
1493 | if (err) { | |
1494 | dev_err(dev, "failed to register MDIO bus\n"); | |
1495 | return err; | |
c83db9ef | 1496 | } |
dac2f83f | 1497 | } |
95aafe91 LW |
1498 | /* If the instance with the MDIO bus has not yet appeared, |
1499 | * defer probing until it gets probed. | |
1500 | */ | |
1501 | if (!mdio_bus) | |
1502 | return -EPROBE_DEFER; | |
dac2f83f | 1503 | |
d813d7e5 LW |
1504 | ndev->netdev_ops = &ixp4xx_netdev_ops; |
1505 | ndev->ethtool_ops = &ixp4xx_ethtool_ops; | |
1506 | ndev->tx_queue_len = 100; | |
8d892d60 LW |
1507 | /* Inherit the DMA masks from the platform device */ |
1508 | ndev->dev.dma_mask = dev->dma_mask; | |
1509 | ndev->dev.coherent_dma_mask = dev->coherent_dma_mask; | |
dac2f83f | 1510 | |
d813d7e5 | 1511 | netif_napi_add(ndev, &port->napi, eth_poll, NAPI_WEIGHT); |
dac2f83f | 1512 | |
c83db9ef LW |
1513 | if (!(port->npe = npe_request(NPE_ID(port->id)))) |
1514 | return -EIO; | |
dac2f83f | 1515 | |
dac2f83f KH |
1516 | port->plat = plat; |
1517 | npe_port_tab[NPE_ID(port->id)] = port; | |
d813d7e5 | 1518 | memcpy(ndev->dev_addr, plat->hwaddr, ETH_ALEN); |
dac2f83f | 1519 | |
d813d7e5 | 1520 | platform_set_drvdata(pdev, ndev); |
dac2f83f KH |
1521 | |
1522 | __raw_writel(DEFAULT_CORE_CNTRL | CORE_RESET, | |
1523 | &port->regs->core_control); | |
1524 | udelay(50); | |
1525 | __raw_writel(DEFAULT_CORE_CNTRL, &port->regs->core_control); | |
1526 | udelay(50); | |
1527 | ||
95aafe91 LW |
1528 | if (np) { |
1529 | phydev = of_phy_get_and_connect(ndev, np, ixp4xx_adjust_link); | |
1530 | } else { | |
1531 | phydev = mdiobus_get_phy(mdio_bus, plat->phy); | |
20e76d3d WY |
1532 | if (!phydev) { |
1533 | err = -ENODEV; | |
95aafe91 LW |
1534 | dev_err(dev, "could not connect phydev (%d)\n", err); |
1535 | goto err_free_mem; | |
1536 | } | |
1537 | err = phy_connect_direct(ndev, phydev, ixp4xx_adjust_link, | |
1538 | PHY_INTERFACE_MODE_MII); | |
1539 | if (err) | |
1540 | goto err_free_mem; | |
1541 | ||
0c661001 | 1542 | } |
95aafe91 LW |
1543 | if (!phydev) { |
1544 | err = -ENODEV; | |
1545 | dev_err(dev, "no phydev\n"); | |
3e8047a9 | 1546 | goto err_free_mem; |
95aafe91 | 1547 | } |
2098c18d | 1548 | |
2a62416d | 1549 | phydev->irq = PHY_POLL; |
dac2f83f | 1550 | |
d813d7e5 | 1551 | if ((err = register_netdev(ndev))) |
7aa6a478 KH |
1552 | goto err_phy_dis; |
1553 | ||
3cb5b0ee LW |
1554 | netdev_info(ndev, "%s: MII PHY %i on %s\n", ndev->name, plat->phy, |
1555 | npe_name(port->npe)); | |
dac2f83f | 1556 | |
dac2f83f KH |
1557 | return 0; |
1558 | ||
7aa6a478 | 1559 | err_phy_dis: |
2a62416d | 1560 | phy_disconnect(phydev); |
7aa6a478 KH |
1561 | err_free_mem: |
1562 | npe_port_tab[NPE_ID(port->id)] = NULL; | |
dac2f83f | 1563 | npe_release(port->npe); |
dac2f83f KH |
1564 | return err; |
1565 | } | |
1566 | ||
c83db9ef | 1567 | static int ixp4xx_eth_remove(struct platform_device *pdev) |
dac2f83f | 1568 | { |
d813d7e5 LW |
1569 | struct net_device *ndev = platform_get_drvdata(pdev); |
1570 | struct phy_device *phydev = ndev->phydev; | |
1571 | struct port *port = netdev_priv(ndev); | |
dac2f83f | 1572 | |
d813d7e5 | 1573 | unregister_netdev(ndev); |
2a62416d | 1574 | phy_disconnect(phydev); |
c83db9ef | 1575 | ixp4xx_mdio_remove(); |
dac2f83f | 1576 | npe_port_tab[NPE_ID(port->id)] = NULL; |
dac2f83f | 1577 | npe_release(port->npe); |
dac2f83f KH |
1578 | return 0; |
1579 | } | |
1580 | ||
95aafe91 LW |
1581 | static const struct of_device_id ixp4xx_eth_of_match[] = { |
1582 | { | |
1583 | .compatible = "intel,ixp4xx-ethernet", | |
1584 | }, | |
1585 | { }, | |
1586 | }; | |
1587 | ||
3c36a837 | 1588 | static struct platform_driver ixp4xx_eth_driver = { |
95aafe91 LW |
1589 | .driver = { |
1590 | .name = DRV_NAME, | |
1591 | .of_match_table = of_match_ptr(ixp4xx_eth_of_match), | |
1592 | }, | |
c83db9ef LW |
1593 | .probe = ixp4xx_eth_probe, |
1594 | .remove = ixp4xx_eth_remove, | |
dac2f83f | 1595 | }; |
c83db9ef | 1596 | module_platform_driver(ixp4xx_eth_driver); |
dac2f83f KH |
1597 | |
1598 | MODULE_AUTHOR("Krzysztof Halasa"); | |
1599 | MODULE_DESCRIPTION("Intel IXP4xx Ethernet driver"); | |
1600 | MODULE_LICENSE("GPL v2"); | |
1601 | MODULE_ALIAS("platform:ixp4xx_eth"); |