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8ceee660 BH |
1 | /**************************************************************************** |
2 | * Driver for Solarflare Solarstorm network controllers and boards | |
3 | * Copyright 2005-2006 Fen Systems Ltd. | |
906bb26c | 4 | * Copyright 2006-2009 Solarflare Communications Inc. |
8ceee660 BH |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License version 2 as published | |
8 | * by the Free Software Foundation, incorporated herein by reference. | |
9 | */ | |
10 | ||
11 | #include <linux/bitops.h> | |
12 | #include <linux/delay.h> | |
13 | #include <linux/pci.h> | |
14 | #include <linux/module.h> | |
15 | #include <linux/seq_file.h> | |
37b5a603 | 16 | #include <linux/i2c.h> |
f31a45d2 | 17 | #include <linux/mii.h> |
5a0e3ad6 | 18 | #include <linux/slab.h> |
8ceee660 BH |
19 | #include "net_driver.h" |
20 | #include "bitfield.h" | |
21 | #include "efx.h" | |
22 | #include "mac.h" | |
8ceee660 | 23 | #include "spi.h" |
744093c9 | 24 | #include "nic.h" |
3e6c4538 | 25 | #include "regs.h" |
12d00cad | 26 | #include "io.h" |
8ceee660 BH |
27 | #include "mdio_10g.h" |
28 | #include "phy.h" | |
8ceee660 BH |
29 | #include "workarounds.h" |
30 | ||
8986352a | 31 | /* Hardware control for SFC4000 (aka Falcon). */ |
8ceee660 | 32 | |
2f7f5730 BH |
33 | static const unsigned int |
34 | /* "Large" EEPROM device: Atmel AT25640 or similar | |
35 | * 8 KB, 16-bit address, 32 B write block */ | |
36 | large_eeprom_type = ((13 << SPI_DEV_TYPE_SIZE_LBN) | |
37 | | (2 << SPI_DEV_TYPE_ADDR_LEN_LBN) | |
38 | | (5 << SPI_DEV_TYPE_BLOCK_SIZE_LBN)), | |
39 | /* Default flash device: Atmel AT25F1024 | |
40 | * 128 KB, 24-bit address, 32 KB erase block, 256 B write block */ | |
41 | default_flash_type = ((17 << SPI_DEV_TYPE_SIZE_LBN) | |
42 | | (3 << SPI_DEV_TYPE_ADDR_LEN_LBN) | |
43 | | (0x52 << SPI_DEV_TYPE_ERASE_CMD_LBN) | |
44 | | (15 << SPI_DEV_TYPE_ERASE_SIZE_LBN) | |
45 | | (8 << SPI_DEV_TYPE_BLOCK_SIZE_LBN)); | |
46 | ||
8ceee660 BH |
47 | /************************************************************************** |
48 | * | |
49 | * I2C bus - this is a bit-bashing interface using GPIO pins | |
50 | * Note that it uses the output enables to tristate the outputs | |
51 | * SDA is the data pin and SCL is the clock | |
52 | * | |
53 | ************************************************************************** | |
54 | */ | |
37b5a603 | 55 | static void falcon_setsda(void *data, int state) |
8ceee660 | 56 | { |
37b5a603 | 57 | struct efx_nic *efx = (struct efx_nic *)data; |
8ceee660 BH |
58 | efx_oword_t reg; |
59 | ||
12d00cad | 60 | efx_reado(efx, ®, FR_AB_GPIO_CTL); |
3e6c4538 | 61 | EFX_SET_OWORD_FIELD(reg, FRF_AB_GPIO3_OEN, !state); |
12d00cad | 62 | efx_writeo(efx, ®, FR_AB_GPIO_CTL); |
8ceee660 BH |
63 | } |
64 | ||
37b5a603 | 65 | static void falcon_setscl(void *data, int state) |
8ceee660 | 66 | { |
37b5a603 | 67 | struct efx_nic *efx = (struct efx_nic *)data; |
8ceee660 BH |
68 | efx_oword_t reg; |
69 | ||
12d00cad | 70 | efx_reado(efx, ®, FR_AB_GPIO_CTL); |
3e6c4538 | 71 | EFX_SET_OWORD_FIELD(reg, FRF_AB_GPIO0_OEN, !state); |
12d00cad | 72 | efx_writeo(efx, ®, FR_AB_GPIO_CTL); |
37b5a603 BH |
73 | } |
74 | ||
8e730c15 BH |
75 | static int falcon_getsda(void *data) |
76 | { | |
77 | struct efx_nic *efx = (struct efx_nic *)data; | |
78 | efx_oword_t reg; | |
8ceee660 | 79 | |
8e730c15 BH |
80 | efx_reado(efx, ®, FR_AB_GPIO_CTL); |
81 | return EFX_OWORD_FIELD(reg, FRF_AB_GPIO3_IN); | |
82 | } | |
8ceee660 | 83 | |
8e730c15 BH |
84 | static int falcon_getscl(void *data) |
85 | { | |
86 | struct efx_nic *efx = (struct efx_nic *)data; | |
87 | efx_oword_t reg; | |
8ceee660 | 88 | |
8e730c15 BH |
89 | efx_reado(efx, ®, FR_AB_GPIO_CTL); |
90 | return EFX_OWORD_FIELD(reg, FRF_AB_GPIO0_IN); | |
8ceee660 BH |
91 | } |
92 | ||
8e730c15 BH |
93 | static struct i2c_algo_bit_data falcon_i2c_bit_operations = { |
94 | .setsda = falcon_setsda, | |
95 | .setscl = falcon_setscl, | |
96 | .getsda = falcon_getsda, | |
97 | .getscl = falcon_getscl, | |
98 | .udelay = 5, | |
99 | /* Wait up to 50 ms for slave to let us pull SCL high */ | |
100 | .timeout = DIV_ROUND_UP(HZ, 20), | |
101 | }; | |
102 | ||
ef2b90ee | 103 | static void falcon_push_irq_moderation(struct efx_channel *channel) |
8ceee660 BH |
104 | { |
105 | efx_dword_t timer_cmd; | |
106 | struct efx_nic *efx = channel->efx; | |
107 | ||
108 | /* Set timer register */ | |
109 | if (channel->irq_moderation) { | |
8ceee660 | 110 | EFX_POPULATE_DWORD_2(timer_cmd, |
3e6c4538 BH |
111 | FRF_AB_TC_TIMER_MODE, |
112 | FFE_BB_TIMER_MODE_INT_HLDOFF, | |
113 | FRF_AB_TC_TIMER_VAL, | |
0d86ebd8 | 114 | channel->irq_moderation - 1); |
8ceee660 BH |
115 | } else { |
116 | EFX_POPULATE_DWORD_2(timer_cmd, | |
3e6c4538 BH |
117 | FRF_AB_TC_TIMER_MODE, |
118 | FFE_BB_TIMER_MODE_DIS, | |
119 | FRF_AB_TC_TIMER_VAL, 0); | |
8ceee660 | 120 | } |
3e6c4538 | 121 | BUILD_BUG_ON(FR_AA_TIMER_COMMAND_KER != FR_BZ_TIMER_COMMAND_P0); |
12d00cad BH |
122 | efx_writed_page_locked(efx, &timer_cmd, FR_BZ_TIMER_COMMAND_P0, |
123 | channel->channel); | |
127e6e10 BH |
124 | } |
125 | ||
d3245b28 BH |
126 | static void falcon_deconfigure_mac_wrapper(struct efx_nic *efx); |
127 | ||
127e6e10 BH |
128 | static void falcon_prepare_flush(struct efx_nic *efx) |
129 | { | |
130 | falcon_deconfigure_mac_wrapper(efx); | |
131 | ||
132 | /* Wait for the tx and rx fifo's to get to the next packet boundary | |
133 | * (~1ms without back-pressure), then to drain the remainder of the | |
134 | * fifo's at data path speeds (negligible), with a healthy margin. */ | |
135 | msleep(10); | |
6bc5d3a9 BH |
136 | } |
137 | ||
8ceee660 BH |
138 | /* Acknowledge a legacy interrupt from Falcon |
139 | * | |
140 | * This acknowledges a legacy (not MSI) interrupt via INT_ACK_KER_REG. | |
141 | * | |
142 | * Due to SFC bug 3706 (silicon revision <=A1) reads can be duplicated in the | |
143 | * BIU. Interrupt acknowledge is read sensitive so must write instead | |
144 | * (then read to ensure the BIU collector is flushed) | |
145 | * | |
146 | * NB most hardware supports MSI interrupts | |
147 | */ | |
152b6a62 | 148 | inline void falcon_irq_ack_a1(struct efx_nic *efx) |
8ceee660 BH |
149 | { |
150 | efx_dword_t reg; | |
151 | ||
3e6c4538 | 152 | EFX_POPULATE_DWORD_1(reg, FRF_AA_INT_ACK_KER_FIELD, 0xb7eb7e); |
12d00cad BH |
153 | efx_writed(efx, ®, FR_AA_INT_ACK_KER); |
154 | efx_readd(efx, ®, FR_AA_WORK_AROUND_BROKEN_PCI_READS); | |
8ceee660 BH |
155 | } |
156 | ||
8ceee660 | 157 | |
152b6a62 | 158 | irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id) |
8ceee660 | 159 | { |
d3208b5e BH |
160 | struct efx_nic *efx = dev_id; |
161 | efx_oword_t *int_ker = efx->irq_status.addr; | |
8ceee660 BH |
162 | struct efx_channel *channel; |
163 | int syserr; | |
164 | int queues; | |
165 | ||
166 | /* Check to see if this is our interrupt. If it isn't, we | |
167 | * exit without having touched the hardware. | |
168 | */ | |
169 | if (unlikely(EFX_OWORD_IS_ZERO(*int_ker))) { | |
62776d03 BH |
170 | netif_vdbg(efx, intr, efx->net_dev, |
171 | "IRQ %d on CPU %d not for me\n", irq, | |
172 | raw_smp_processor_id()); | |
8ceee660 BH |
173 | return IRQ_NONE; |
174 | } | |
175 | efx->last_irq_cpu = raw_smp_processor_id(); | |
62776d03 BH |
176 | netif_vdbg(efx, intr, efx->net_dev, |
177 | "IRQ %d on CPU %d status " EFX_OWORD_FMT "\n", | |
178 | irq, raw_smp_processor_id(), EFX_OWORD_VAL(*int_ker)); | |
8ceee660 | 179 | |
8ceee660 BH |
180 | /* Determine interrupting queues, clear interrupt status |
181 | * register and acknowledge the device interrupt. | |
182 | */ | |
674979d3 BH |
183 | BUILD_BUG_ON(FSF_AZ_NET_IVEC_INT_Q_WIDTH > EFX_MAX_CHANNELS); |
184 | queues = EFX_OWORD_FIELD(*int_ker, FSF_AZ_NET_IVEC_INT_Q); | |
63695459 SH |
185 | |
186 | /* Check to see if we have a serious error condition */ | |
187 | if (queues & (1U << efx->fatal_irq_level)) { | |
188 | syserr = EFX_OWORD_FIELD(*int_ker, FSF_AZ_NET_IVEC_FATAL_INT); | |
189 | if (unlikely(syserr)) | |
190 | return efx_nic_fatal_interrupt(efx); | |
191 | } | |
192 | ||
8ceee660 BH |
193 | EFX_ZERO_OWORD(*int_ker); |
194 | wmb(); /* Ensure the vector is cleared before interrupt ack */ | |
195 | falcon_irq_ack_a1(efx); | |
196 | ||
197 | /* Schedule processing of any interrupting queues */ | |
198 | channel = &efx->channel[0]; | |
199 | while (queues) { | |
200 | if (queues & 0x01) | |
201 | efx_schedule_channel(channel); | |
202 | channel++; | |
203 | queues >>= 1; | |
204 | } | |
205 | ||
206 | return IRQ_HANDLED; | |
207 | } | |
8ceee660 BH |
208 | /************************************************************************** |
209 | * | |
210 | * EEPROM/flash | |
211 | * | |
212 | ************************************************************************** | |
213 | */ | |
214 | ||
23d30f02 | 215 | #define FALCON_SPI_MAX_LEN sizeof(efx_oword_t) |
8ceee660 | 216 | |
be4ea89c BH |
217 | static int falcon_spi_poll(struct efx_nic *efx) |
218 | { | |
219 | efx_oword_t reg; | |
12d00cad | 220 | efx_reado(efx, ®, FR_AB_EE_SPI_HCMD); |
3e6c4538 | 221 | return EFX_OWORD_FIELD(reg, FRF_AB_EE_SPI_HCMD_CMD_EN) ? -EBUSY : 0; |
be4ea89c BH |
222 | } |
223 | ||
8ceee660 BH |
224 | /* Wait for SPI command completion */ |
225 | static int falcon_spi_wait(struct efx_nic *efx) | |
226 | { | |
be4ea89c BH |
227 | /* Most commands will finish quickly, so we start polling at |
228 | * very short intervals. Sometimes the command may have to | |
229 | * wait for VPD or expansion ROM access outside of our | |
230 | * control, so we allow up to 100 ms. */ | |
231 | unsigned long timeout = jiffies + 1 + DIV_ROUND_UP(HZ, 10); | |
232 | int i; | |
233 | ||
234 | for (i = 0; i < 10; i++) { | |
235 | if (!falcon_spi_poll(efx)) | |
236 | return 0; | |
237 | udelay(10); | |
238 | } | |
8ceee660 | 239 | |
4a5b504d | 240 | for (;;) { |
be4ea89c | 241 | if (!falcon_spi_poll(efx)) |
8ceee660 | 242 | return 0; |
4a5b504d | 243 | if (time_after_eq(jiffies, timeout)) { |
62776d03 BH |
244 | netif_err(efx, hw, efx->net_dev, |
245 | "timed out waiting for SPI\n"); | |
4a5b504d BH |
246 | return -ETIMEDOUT; |
247 | } | |
be4ea89c | 248 | schedule_timeout_uninterruptible(1); |
4a5b504d | 249 | } |
8ceee660 BH |
250 | } |
251 | ||
76884835 | 252 | int falcon_spi_cmd(struct efx_nic *efx, const struct efx_spi_device *spi, |
f4150724 | 253 | unsigned int command, int address, |
23d30f02 | 254 | const void *in, void *out, size_t len) |
8ceee660 | 255 | { |
4a5b504d BH |
256 | bool addressed = (address >= 0); |
257 | bool reading = (out != NULL); | |
8ceee660 BH |
258 | efx_oword_t reg; |
259 | int rc; | |
260 | ||
4a5b504d BH |
261 | /* Input validation */ |
262 | if (len > FALCON_SPI_MAX_LEN) | |
263 | return -EINVAL; | |
f4150724 | 264 | BUG_ON(!mutex_is_locked(&efx->spi_lock)); |
8ceee660 | 265 | |
be4ea89c BH |
266 | /* Check that previous command is not still running */ |
267 | rc = falcon_spi_poll(efx); | |
8ceee660 BH |
268 | if (rc) |
269 | return rc; | |
270 | ||
4a5b504d BH |
271 | /* Program address register, if we have an address */ |
272 | if (addressed) { | |
3e6c4538 | 273 | EFX_POPULATE_OWORD_1(reg, FRF_AB_EE_SPI_HADR_ADR, address); |
12d00cad | 274 | efx_writeo(efx, ®, FR_AB_EE_SPI_HADR); |
4a5b504d BH |
275 | } |
276 | ||
277 | /* Program data register, if we have data */ | |
278 | if (in != NULL) { | |
279 | memcpy(®, in, len); | |
12d00cad | 280 | efx_writeo(efx, ®, FR_AB_EE_SPI_HDATA); |
4a5b504d | 281 | } |
8ceee660 | 282 | |
4a5b504d | 283 | /* Issue read/write command */ |
8ceee660 | 284 | EFX_POPULATE_OWORD_7(reg, |
3e6c4538 BH |
285 | FRF_AB_EE_SPI_HCMD_CMD_EN, 1, |
286 | FRF_AB_EE_SPI_HCMD_SF_SEL, spi->device_id, | |
287 | FRF_AB_EE_SPI_HCMD_DABCNT, len, | |
288 | FRF_AB_EE_SPI_HCMD_READ, reading, | |
289 | FRF_AB_EE_SPI_HCMD_DUBCNT, 0, | |
290 | FRF_AB_EE_SPI_HCMD_ADBCNT, | |
4a5b504d | 291 | (addressed ? spi->addr_len : 0), |
3e6c4538 | 292 | FRF_AB_EE_SPI_HCMD_ENC, command); |
12d00cad | 293 | efx_writeo(efx, ®, FR_AB_EE_SPI_HCMD); |
8ceee660 | 294 | |
4a5b504d | 295 | /* Wait for read/write to complete */ |
8ceee660 BH |
296 | rc = falcon_spi_wait(efx); |
297 | if (rc) | |
298 | return rc; | |
299 | ||
300 | /* Read data */ | |
4a5b504d | 301 | if (out != NULL) { |
12d00cad | 302 | efx_reado(efx, ®, FR_AB_EE_SPI_HDATA); |
4a5b504d BH |
303 | memcpy(out, ®, len); |
304 | } | |
305 | ||
8ceee660 BH |
306 | return 0; |
307 | } | |
308 | ||
23d30f02 BH |
309 | static size_t |
310 | falcon_spi_write_limit(const struct efx_spi_device *spi, size_t start) | |
4a5b504d BH |
311 | { |
312 | return min(FALCON_SPI_MAX_LEN, | |
313 | (spi->block_size - (start & (spi->block_size - 1)))); | |
314 | } | |
315 | ||
316 | static inline u8 | |
317 | efx_spi_munge_command(const struct efx_spi_device *spi, | |
318 | const u8 command, const unsigned int address) | |
319 | { | |
320 | return command | (((address >> 8) & spi->munge_address) << 3); | |
321 | } | |
322 | ||
be4ea89c | 323 | /* Wait up to 10 ms for buffered write completion */ |
76884835 BH |
324 | int |
325 | falcon_spi_wait_write(struct efx_nic *efx, const struct efx_spi_device *spi) | |
4a5b504d | 326 | { |
be4ea89c | 327 | unsigned long timeout = jiffies + 1 + DIV_ROUND_UP(HZ, 100); |
4a5b504d | 328 | u8 status; |
be4ea89c | 329 | int rc; |
4a5b504d | 330 | |
be4ea89c | 331 | for (;;) { |
76884835 | 332 | rc = falcon_spi_cmd(efx, spi, SPI_RDSR, -1, NULL, |
4a5b504d BH |
333 | &status, sizeof(status)); |
334 | if (rc) | |
335 | return rc; | |
336 | if (!(status & SPI_STATUS_NRDY)) | |
337 | return 0; | |
be4ea89c | 338 | if (time_after_eq(jiffies, timeout)) { |
62776d03 BH |
339 | netif_err(efx, hw, efx->net_dev, |
340 | "SPI write timeout on device %d" | |
341 | " last status=0x%02x\n", | |
342 | spi->device_id, status); | |
be4ea89c BH |
343 | return -ETIMEDOUT; |
344 | } | |
345 | schedule_timeout_uninterruptible(1); | |
4a5b504d | 346 | } |
4a5b504d BH |
347 | } |
348 | ||
76884835 BH |
349 | int falcon_spi_read(struct efx_nic *efx, const struct efx_spi_device *spi, |
350 | loff_t start, size_t len, size_t *retlen, u8 *buffer) | |
4a5b504d | 351 | { |
23d30f02 BH |
352 | size_t block_len, pos = 0; |
353 | unsigned int command; | |
4a5b504d BH |
354 | int rc = 0; |
355 | ||
356 | while (pos < len) { | |
23d30f02 | 357 | block_len = min(len - pos, FALCON_SPI_MAX_LEN); |
4a5b504d BH |
358 | |
359 | command = efx_spi_munge_command(spi, SPI_READ, start + pos); | |
76884835 | 360 | rc = falcon_spi_cmd(efx, spi, command, start + pos, NULL, |
4a5b504d BH |
361 | buffer + pos, block_len); |
362 | if (rc) | |
363 | break; | |
364 | pos += block_len; | |
365 | ||
366 | /* Avoid locking up the system */ | |
367 | cond_resched(); | |
368 | if (signal_pending(current)) { | |
369 | rc = -EINTR; | |
370 | break; | |
371 | } | |
372 | } | |
373 | ||
374 | if (retlen) | |
375 | *retlen = pos; | |
376 | return rc; | |
377 | } | |
378 | ||
76884835 BH |
379 | int |
380 | falcon_spi_write(struct efx_nic *efx, const struct efx_spi_device *spi, | |
381 | loff_t start, size_t len, size_t *retlen, const u8 *buffer) | |
4a5b504d BH |
382 | { |
383 | u8 verify_buffer[FALCON_SPI_MAX_LEN]; | |
23d30f02 BH |
384 | size_t block_len, pos = 0; |
385 | unsigned int command; | |
4a5b504d BH |
386 | int rc = 0; |
387 | ||
388 | while (pos < len) { | |
76884835 | 389 | rc = falcon_spi_cmd(efx, spi, SPI_WREN, -1, NULL, NULL, 0); |
4a5b504d BH |
390 | if (rc) |
391 | break; | |
392 | ||
23d30f02 | 393 | block_len = min(len - pos, |
4a5b504d BH |
394 | falcon_spi_write_limit(spi, start + pos)); |
395 | command = efx_spi_munge_command(spi, SPI_WRITE, start + pos); | |
76884835 | 396 | rc = falcon_spi_cmd(efx, spi, command, start + pos, |
4a5b504d BH |
397 | buffer + pos, NULL, block_len); |
398 | if (rc) | |
399 | break; | |
400 | ||
76884835 | 401 | rc = falcon_spi_wait_write(efx, spi); |
4a5b504d BH |
402 | if (rc) |
403 | break; | |
404 | ||
405 | command = efx_spi_munge_command(spi, SPI_READ, start + pos); | |
76884835 | 406 | rc = falcon_spi_cmd(efx, spi, command, start + pos, |
4a5b504d BH |
407 | NULL, verify_buffer, block_len); |
408 | if (memcmp(verify_buffer, buffer + pos, block_len)) { | |
409 | rc = -EIO; | |
410 | break; | |
411 | } | |
412 | ||
413 | pos += block_len; | |
414 | ||
415 | /* Avoid locking up the system */ | |
416 | cond_resched(); | |
417 | if (signal_pending(current)) { | |
418 | rc = -EINTR; | |
419 | break; | |
420 | } | |
421 | } | |
422 | ||
423 | if (retlen) | |
424 | *retlen = pos; | |
425 | return rc; | |
426 | } | |
427 | ||
8ceee660 BH |
428 | /************************************************************************** |
429 | * | |
430 | * MAC wrapper | |
431 | * | |
432 | ************************************************************************** | |
433 | */ | |
177dfcd8 | 434 | |
ef2b90ee BH |
435 | static void falcon_push_multicast_hash(struct efx_nic *efx) |
436 | { | |
437 | union efx_multicast_hash *mc_hash = &efx->multicast_hash; | |
438 | ||
439 | WARN_ON(!mutex_is_locked(&efx->mac_lock)); | |
440 | ||
441 | efx_writeo(efx, &mc_hash->oword[0], FR_AB_MAC_MC_HASH_REG0); | |
442 | efx_writeo(efx, &mc_hash->oword[1], FR_AB_MAC_MC_HASH_REG1); | |
443 | } | |
444 | ||
d3245b28 | 445 | static void falcon_reset_macs(struct efx_nic *efx) |
8ceee660 | 446 | { |
d3245b28 BH |
447 | struct falcon_nic_data *nic_data = efx->nic_data; |
448 | efx_oword_t reg, mac_ctrl; | |
8ceee660 BH |
449 | int count; |
450 | ||
daeda630 | 451 | if (efx_nic_rev(efx) < EFX_REV_FALCON_B0) { |
177dfcd8 BH |
452 | /* It's not safe to use GLB_CTL_REG to reset the |
453 | * macs, so instead use the internal MAC resets | |
454 | */ | |
455 | if (!EFX_IS10G(efx)) { | |
3e6c4538 | 456 | EFX_POPULATE_OWORD_1(reg, FRF_AB_GM_SW_RST, 1); |
12d00cad | 457 | efx_writeo(efx, ®, FR_AB_GM_CFG1); |
177dfcd8 BH |
458 | udelay(1000); |
459 | ||
3e6c4538 | 460 | EFX_POPULATE_OWORD_1(reg, FRF_AB_GM_SW_RST, 0); |
12d00cad | 461 | efx_writeo(efx, ®, FR_AB_GM_CFG1); |
177dfcd8 | 462 | udelay(1000); |
d3245b28 | 463 | return; |
177dfcd8 | 464 | } else { |
3e6c4538 | 465 | EFX_POPULATE_OWORD_1(reg, FRF_AB_XM_CORE_RST, 1); |
12d00cad | 466 | efx_writeo(efx, ®, FR_AB_XM_GLB_CFG); |
177dfcd8 BH |
467 | |
468 | for (count = 0; count < 10000; count++) { | |
12d00cad | 469 | efx_reado(efx, ®, FR_AB_XM_GLB_CFG); |
3e6c4538 BH |
470 | if (EFX_OWORD_FIELD(reg, FRF_AB_XM_CORE_RST) == |
471 | 0) | |
d3245b28 | 472 | return; |
177dfcd8 BH |
473 | udelay(10); |
474 | } | |
8ceee660 | 475 | |
62776d03 BH |
476 | netif_err(efx, hw, efx->net_dev, |
477 | "timed out waiting for XMAC core reset\n"); | |
177dfcd8 BH |
478 | } |
479 | } | |
8ceee660 | 480 | |
d3245b28 BH |
481 | /* Mac stats will fail whist the TX fifo is draining */ |
482 | WARN_ON(nic_data->stats_disable_count == 0); | |
8ceee660 | 483 | |
d3245b28 BH |
484 | efx_reado(efx, &mac_ctrl, FR_AB_MAC_CTRL); |
485 | EFX_SET_OWORD_FIELD(mac_ctrl, FRF_BB_TXFIFO_DRAIN_EN, 1); | |
486 | efx_writeo(efx, &mac_ctrl, FR_AB_MAC_CTRL); | |
8ceee660 | 487 | |
12d00cad | 488 | efx_reado(efx, ®, FR_AB_GLB_CTL); |
3e6c4538 BH |
489 | EFX_SET_OWORD_FIELD(reg, FRF_AB_RST_XGTX, 1); |
490 | EFX_SET_OWORD_FIELD(reg, FRF_AB_RST_XGRX, 1); | |
491 | EFX_SET_OWORD_FIELD(reg, FRF_AB_RST_EM, 1); | |
12d00cad | 492 | efx_writeo(efx, ®, FR_AB_GLB_CTL); |
8ceee660 BH |
493 | |
494 | count = 0; | |
495 | while (1) { | |
12d00cad | 496 | efx_reado(efx, ®, FR_AB_GLB_CTL); |
3e6c4538 BH |
497 | if (!EFX_OWORD_FIELD(reg, FRF_AB_RST_XGTX) && |
498 | !EFX_OWORD_FIELD(reg, FRF_AB_RST_XGRX) && | |
499 | !EFX_OWORD_FIELD(reg, FRF_AB_RST_EM)) { | |
62776d03 BH |
500 | netif_dbg(efx, hw, efx->net_dev, |
501 | "Completed MAC reset after %d loops\n", | |
502 | count); | |
8ceee660 BH |
503 | break; |
504 | } | |
505 | if (count > 20) { | |
62776d03 | 506 | netif_err(efx, hw, efx->net_dev, "MAC reset failed\n"); |
8ceee660 BH |
507 | break; |
508 | } | |
509 | count++; | |
510 | udelay(10); | |
511 | } | |
512 | ||
d3245b28 BH |
513 | /* Ensure the correct MAC is selected before statistics |
514 | * are re-enabled by the caller */ | |
515 | efx_writeo(efx, &mac_ctrl, FR_AB_MAC_CTRL); | |
b7b40eeb SH |
516 | |
517 | /* This can run even when the GMAC is selected */ | |
518 | falcon_setup_xaui(efx); | |
177dfcd8 BH |
519 | } |
520 | ||
521 | void falcon_drain_tx_fifo(struct efx_nic *efx) | |
522 | { | |
523 | efx_oword_t reg; | |
524 | ||
daeda630 | 525 | if ((efx_nic_rev(efx) < EFX_REV_FALCON_B0) || |
177dfcd8 BH |
526 | (efx->loopback_mode != LOOPBACK_NONE)) |
527 | return; | |
528 | ||
12d00cad | 529 | efx_reado(efx, ®, FR_AB_MAC_CTRL); |
177dfcd8 | 530 | /* There is no point in draining more than once */ |
3e6c4538 | 531 | if (EFX_OWORD_FIELD(reg, FRF_BB_TXFIFO_DRAIN_EN)) |
177dfcd8 BH |
532 | return; |
533 | ||
534 | falcon_reset_macs(efx); | |
8ceee660 BH |
535 | } |
536 | ||
d3245b28 | 537 | static void falcon_deconfigure_mac_wrapper(struct efx_nic *efx) |
8ceee660 | 538 | { |
177dfcd8 | 539 | efx_oword_t reg; |
8ceee660 | 540 | |
daeda630 | 541 | if (efx_nic_rev(efx) < EFX_REV_FALCON_B0) |
8ceee660 BH |
542 | return; |
543 | ||
544 | /* Isolate the MAC -> RX */ | |
12d00cad | 545 | efx_reado(efx, ®, FR_AZ_RX_CFG); |
3e6c4538 | 546 | EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_INGR_EN, 0); |
12d00cad | 547 | efx_writeo(efx, ®, FR_AZ_RX_CFG); |
8ceee660 | 548 | |
d3245b28 BH |
549 | /* Isolate TX -> MAC */ |
550 | falcon_drain_tx_fifo(efx); | |
8ceee660 BH |
551 | } |
552 | ||
553 | void falcon_reconfigure_mac_wrapper(struct efx_nic *efx) | |
554 | { | |
eb50c0d6 | 555 | struct efx_link_state *link_state = &efx->link_state; |
8ceee660 | 556 | efx_oword_t reg; |
fd371e32 SH |
557 | int link_speed, isolate; |
558 | ||
559 | isolate = (efx->reset_pending != RESET_TYPE_NONE); | |
8ceee660 | 560 | |
eb50c0d6 | 561 | switch (link_state->speed) { |
f31a45d2 BH |
562 | case 10000: link_speed = 3; break; |
563 | case 1000: link_speed = 2; break; | |
564 | case 100: link_speed = 1; break; | |
565 | default: link_speed = 0; break; | |
566 | } | |
8ceee660 BH |
567 | /* MAC_LINK_STATUS controls MAC backpressure but doesn't work |
568 | * as advertised. Disable to ensure packets are not | |
569 | * indefinitely held and TX queue can be flushed at any point | |
570 | * while the link is down. */ | |
571 | EFX_POPULATE_OWORD_5(reg, | |
3e6c4538 BH |
572 | FRF_AB_MAC_XOFF_VAL, 0xffff /* max pause time */, |
573 | FRF_AB_MAC_BCAD_ACPT, 1, | |
574 | FRF_AB_MAC_UC_PROM, efx->promiscuous, | |
575 | FRF_AB_MAC_LINK_STATUS, 1, /* always set */ | |
576 | FRF_AB_MAC_SPEED, link_speed); | |
8ceee660 BH |
577 | /* On B0, MAC backpressure can be disabled and packets get |
578 | * discarded. */ | |
daeda630 | 579 | if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) { |
3e6c4538 | 580 | EFX_SET_OWORD_FIELD(reg, FRF_BB_TXFIFO_DRAIN_EN, |
fd371e32 | 581 | !link_state->up || isolate); |
8ceee660 BH |
582 | } |
583 | ||
12d00cad | 584 | efx_writeo(efx, ®, FR_AB_MAC_CTRL); |
8ceee660 BH |
585 | |
586 | /* Restore the multicast hash registers. */ | |
8be4f3e6 | 587 | falcon_push_multicast_hash(efx); |
8ceee660 | 588 | |
12d00cad | 589 | efx_reado(efx, ®, FR_AZ_RX_CFG); |
4b0d29dc BH |
590 | /* Enable XOFF signal from RX FIFO (we enabled it during NIC |
591 | * initialisation but it may read back as 0) */ | |
592 | EFX_SET_OWORD_FIELD(reg, FRF_AZ_RX_XOFF_MAC_EN, 1); | |
8ceee660 | 593 | /* Unisolate the MAC -> RX */ |
daeda630 | 594 | if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) |
fd371e32 | 595 | EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_INGR_EN, !isolate); |
12d00cad | 596 | efx_writeo(efx, ®, FR_AZ_RX_CFG); |
8ceee660 BH |
597 | } |
598 | ||
55edc6e6 | 599 | static void falcon_stats_request(struct efx_nic *efx) |
8ceee660 | 600 | { |
55edc6e6 | 601 | struct falcon_nic_data *nic_data = efx->nic_data; |
8ceee660 | 602 | efx_oword_t reg; |
8ceee660 | 603 | |
55edc6e6 BH |
604 | WARN_ON(nic_data->stats_pending); |
605 | WARN_ON(nic_data->stats_disable_count); | |
8ceee660 | 606 | |
55edc6e6 BH |
607 | if (nic_data->stats_dma_done == NULL) |
608 | return; /* no mac selected */ | |
8ceee660 | 609 | |
55edc6e6 BH |
610 | *nic_data->stats_dma_done = FALCON_STATS_NOT_DONE; |
611 | nic_data->stats_pending = true; | |
8ceee660 BH |
612 | wmb(); /* ensure done flag is clear */ |
613 | ||
614 | /* Initiate DMA transfer of stats */ | |
615 | EFX_POPULATE_OWORD_2(reg, | |
3e6c4538 BH |
616 | FRF_AB_MAC_STAT_DMA_CMD, 1, |
617 | FRF_AB_MAC_STAT_DMA_ADR, | |
8ceee660 | 618 | efx->stats_buffer.dma_addr); |
12d00cad | 619 | efx_writeo(efx, ®, FR_AB_MAC_STAT_DMA); |
8ceee660 | 620 | |
55edc6e6 BH |
621 | mod_timer(&nic_data->stats_timer, round_jiffies_up(jiffies + HZ / 2)); |
622 | } | |
623 | ||
624 | static void falcon_stats_complete(struct efx_nic *efx) | |
625 | { | |
626 | struct falcon_nic_data *nic_data = efx->nic_data; | |
627 | ||
628 | if (!nic_data->stats_pending) | |
629 | return; | |
630 | ||
631 | nic_data->stats_pending = 0; | |
632 | if (*nic_data->stats_dma_done == FALCON_STATS_DONE) { | |
633 | rmb(); /* read the done flag before the stats */ | |
634 | efx->mac_op->update_stats(efx); | |
635 | } else { | |
62776d03 BH |
636 | netif_err(efx, hw, efx->net_dev, |
637 | "timed out waiting for statistics\n"); | |
8ceee660 | 638 | } |
55edc6e6 | 639 | } |
8ceee660 | 640 | |
55edc6e6 BH |
641 | static void falcon_stats_timer_func(unsigned long context) |
642 | { | |
643 | struct efx_nic *efx = (struct efx_nic *)context; | |
644 | struct falcon_nic_data *nic_data = efx->nic_data; | |
645 | ||
646 | spin_lock(&efx->stats_lock); | |
647 | ||
648 | falcon_stats_complete(efx); | |
649 | if (nic_data->stats_disable_count == 0) | |
650 | falcon_stats_request(efx); | |
651 | ||
652 | spin_unlock(&efx->stats_lock); | |
8ceee660 BH |
653 | } |
654 | ||
d3245b28 BH |
655 | static void falcon_switch_mac(struct efx_nic *efx); |
656 | ||
fdaa9aed SH |
657 | static bool falcon_loopback_link_poll(struct efx_nic *efx) |
658 | { | |
659 | struct efx_link_state old_state = efx->link_state; | |
660 | ||
661 | WARN_ON(!mutex_is_locked(&efx->mac_lock)); | |
662 | WARN_ON(!LOOPBACK_INTERNAL(efx)); | |
663 | ||
664 | efx->link_state.fd = true; | |
665 | efx->link_state.fc = efx->wanted_fc; | |
666 | efx->link_state.up = true; | |
667 | ||
668 | if (efx->loopback_mode == LOOPBACK_GMAC) | |
669 | efx->link_state.speed = 1000; | |
670 | else | |
671 | efx->link_state.speed = 10000; | |
672 | ||
673 | return !efx_link_state_equal(&efx->link_state, &old_state); | |
674 | } | |
675 | ||
d3245b28 BH |
676 | static int falcon_reconfigure_port(struct efx_nic *efx) |
677 | { | |
678 | int rc; | |
679 | ||
680 | WARN_ON(efx_nic_rev(efx) > EFX_REV_FALCON_B0); | |
681 | ||
682 | /* Poll the PHY link state *before* reconfiguring it. This means we | |
683 | * will pick up the correct speed (in loopback) to select the correct | |
684 | * MAC. | |
685 | */ | |
686 | if (LOOPBACK_INTERNAL(efx)) | |
687 | falcon_loopback_link_poll(efx); | |
688 | else | |
689 | efx->phy_op->poll(efx); | |
690 | ||
691 | falcon_stop_nic_stats(efx); | |
692 | falcon_deconfigure_mac_wrapper(efx); | |
693 | ||
694 | falcon_switch_mac(efx); | |
695 | ||
696 | efx->phy_op->reconfigure(efx); | |
697 | rc = efx->mac_op->reconfigure(efx); | |
698 | BUG_ON(rc); | |
699 | ||
700 | falcon_start_nic_stats(efx); | |
701 | ||
702 | /* Synchronise efx->link_state with the kernel */ | |
703 | efx_link_status_changed(efx); | |
704 | ||
705 | return 0; | |
706 | } | |
707 | ||
8ceee660 BH |
708 | /************************************************************************** |
709 | * | |
710 | * PHY access via GMII | |
711 | * | |
712 | ************************************************************************** | |
713 | */ | |
714 | ||
8ceee660 BH |
715 | /* Wait for GMII access to complete */ |
716 | static int falcon_gmii_wait(struct efx_nic *efx) | |
717 | { | |
80cb9a0f | 718 | efx_oword_t md_stat; |
8ceee660 BH |
719 | int count; |
720 | ||
177dfcd8 BH |
721 | /* wait upto 50ms - taken max from datasheet */ |
722 | for (count = 0; count < 5000; count++) { | |
80cb9a0f BH |
723 | efx_reado(efx, &md_stat, FR_AB_MD_STAT); |
724 | if (EFX_OWORD_FIELD(md_stat, FRF_AB_MD_BSY) == 0) { | |
725 | if (EFX_OWORD_FIELD(md_stat, FRF_AB_MD_LNFL) != 0 || | |
726 | EFX_OWORD_FIELD(md_stat, FRF_AB_MD_BSERR) != 0) { | |
62776d03 BH |
727 | netif_err(efx, hw, efx->net_dev, |
728 | "error from GMII access " | |
729 | EFX_OWORD_FMT"\n", | |
730 | EFX_OWORD_VAL(md_stat)); | |
8ceee660 BH |
731 | return -EIO; |
732 | } | |
733 | return 0; | |
734 | } | |
735 | udelay(10); | |
736 | } | |
62776d03 | 737 | netif_err(efx, hw, efx->net_dev, "timed out waiting for GMII\n"); |
8ceee660 BH |
738 | return -ETIMEDOUT; |
739 | } | |
740 | ||
68e7f45e BH |
741 | /* Write an MDIO register of a PHY connected to Falcon. */ |
742 | static int falcon_mdio_write(struct net_device *net_dev, | |
743 | int prtad, int devad, u16 addr, u16 value) | |
8ceee660 | 744 | { |
767e468c | 745 | struct efx_nic *efx = netdev_priv(net_dev); |
8ceee660 | 746 | efx_oword_t reg; |
68e7f45e | 747 | int rc; |
8ceee660 | 748 | |
62776d03 BH |
749 | netif_vdbg(efx, hw, efx->net_dev, |
750 | "writing MDIO %d register %d.%d with 0x%04x\n", | |
68e7f45e | 751 | prtad, devad, addr, value); |
8ceee660 | 752 | |
ab867461 | 753 | mutex_lock(&efx->mdio_lock); |
8ceee660 | 754 | |
68e7f45e BH |
755 | /* Check MDIO not currently being accessed */ |
756 | rc = falcon_gmii_wait(efx); | |
757 | if (rc) | |
8ceee660 BH |
758 | goto out; |
759 | ||
760 | /* Write the address/ID register */ | |
3e6c4538 | 761 | EFX_POPULATE_OWORD_1(reg, FRF_AB_MD_PHY_ADR, addr); |
12d00cad | 762 | efx_writeo(efx, ®, FR_AB_MD_PHY_ADR); |
8ceee660 | 763 | |
3e6c4538 BH |
764 | EFX_POPULATE_OWORD_2(reg, FRF_AB_MD_PRT_ADR, prtad, |
765 | FRF_AB_MD_DEV_ADR, devad); | |
12d00cad | 766 | efx_writeo(efx, ®, FR_AB_MD_ID); |
8ceee660 BH |
767 | |
768 | /* Write data */ | |
3e6c4538 | 769 | EFX_POPULATE_OWORD_1(reg, FRF_AB_MD_TXD, value); |
12d00cad | 770 | efx_writeo(efx, ®, FR_AB_MD_TXD); |
8ceee660 BH |
771 | |
772 | EFX_POPULATE_OWORD_2(reg, | |
3e6c4538 BH |
773 | FRF_AB_MD_WRC, 1, |
774 | FRF_AB_MD_GC, 0); | |
12d00cad | 775 | efx_writeo(efx, ®, FR_AB_MD_CS); |
8ceee660 BH |
776 | |
777 | /* Wait for data to be written */ | |
68e7f45e BH |
778 | rc = falcon_gmii_wait(efx); |
779 | if (rc) { | |
8ceee660 BH |
780 | /* Abort the write operation */ |
781 | EFX_POPULATE_OWORD_2(reg, | |
3e6c4538 BH |
782 | FRF_AB_MD_WRC, 0, |
783 | FRF_AB_MD_GC, 1); | |
12d00cad | 784 | efx_writeo(efx, ®, FR_AB_MD_CS); |
8ceee660 BH |
785 | udelay(10); |
786 | } | |
787 | ||
ab867461 SH |
788 | out: |
789 | mutex_unlock(&efx->mdio_lock); | |
68e7f45e | 790 | return rc; |
8ceee660 BH |
791 | } |
792 | ||
68e7f45e BH |
793 | /* Read an MDIO register of a PHY connected to Falcon. */ |
794 | static int falcon_mdio_read(struct net_device *net_dev, | |
795 | int prtad, int devad, u16 addr) | |
8ceee660 | 796 | { |
767e468c | 797 | struct efx_nic *efx = netdev_priv(net_dev); |
8ceee660 | 798 | efx_oword_t reg; |
68e7f45e | 799 | int rc; |
8ceee660 | 800 | |
ab867461 | 801 | mutex_lock(&efx->mdio_lock); |
8ceee660 | 802 | |
68e7f45e BH |
803 | /* Check MDIO not currently being accessed */ |
804 | rc = falcon_gmii_wait(efx); | |
805 | if (rc) | |
8ceee660 BH |
806 | goto out; |
807 | ||
3e6c4538 | 808 | EFX_POPULATE_OWORD_1(reg, FRF_AB_MD_PHY_ADR, addr); |
12d00cad | 809 | efx_writeo(efx, ®, FR_AB_MD_PHY_ADR); |
8ceee660 | 810 | |
3e6c4538 BH |
811 | EFX_POPULATE_OWORD_2(reg, FRF_AB_MD_PRT_ADR, prtad, |
812 | FRF_AB_MD_DEV_ADR, devad); | |
12d00cad | 813 | efx_writeo(efx, ®, FR_AB_MD_ID); |
8ceee660 BH |
814 | |
815 | /* Request data to be read */ | |
3e6c4538 | 816 | EFX_POPULATE_OWORD_2(reg, FRF_AB_MD_RDC, 1, FRF_AB_MD_GC, 0); |
12d00cad | 817 | efx_writeo(efx, ®, FR_AB_MD_CS); |
8ceee660 BH |
818 | |
819 | /* Wait for data to become available */ | |
68e7f45e BH |
820 | rc = falcon_gmii_wait(efx); |
821 | if (rc == 0) { | |
12d00cad | 822 | efx_reado(efx, ®, FR_AB_MD_RXD); |
3e6c4538 | 823 | rc = EFX_OWORD_FIELD(reg, FRF_AB_MD_RXD); |
62776d03 BH |
824 | netif_vdbg(efx, hw, efx->net_dev, |
825 | "read from MDIO %d register %d.%d, got %04x\n", | |
826 | prtad, devad, addr, rc); | |
8ceee660 BH |
827 | } else { |
828 | /* Abort the read operation */ | |
829 | EFX_POPULATE_OWORD_2(reg, | |
3e6c4538 BH |
830 | FRF_AB_MD_RIC, 0, |
831 | FRF_AB_MD_GC, 1); | |
12d00cad | 832 | efx_writeo(efx, ®, FR_AB_MD_CS); |
8ceee660 | 833 | |
62776d03 BH |
834 | netif_dbg(efx, hw, efx->net_dev, |
835 | "read from MDIO %d register %d.%d, got error %d\n", | |
836 | prtad, devad, addr, rc); | |
8ceee660 BH |
837 | } |
838 | ||
ab867461 SH |
839 | out: |
840 | mutex_unlock(&efx->mdio_lock); | |
68e7f45e | 841 | return rc; |
8ceee660 BH |
842 | } |
843 | ||
26deba50 SH |
844 | static void falcon_clock_mac(struct efx_nic *efx) |
845 | { | |
846 | unsigned strap_val; | |
847 | efx_oword_t nic_stat; | |
848 | ||
849 | /* Configure the NIC generated MAC clock correctly */ | |
850 | efx_reado(efx, &nic_stat, FR_AB_NIC_STAT); | |
851 | strap_val = EFX_IS10G(efx) ? 5 : 3; | |
daeda630 | 852 | if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) { |
26deba50 SH |
853 | EFX_SET_OWORD_FIELD(nic_stat, FRF_BB_EE_STRAP_EN, 1); |
854 | EFX_SET_OWORD_FIELD(nic_stat, FRF_BB_EE_STRAP, strap_val); | |
855 | efx_writeo(efx, &nic_stat, FR_AB_NIC_STAT); | |
856 | } else { | |
857 | /* Falcon A1 does not support 1G/10G speed switching | |
858 | * and must not be used with a PHY that does. */ | |
859 | BUG_ON(EFX_OWORD_FIELD(nic_stat, FRF_AB_STRAP_PINS) != | |
860 | strap_val); | |
861 | } | |
862 | } | |
863 | ||
d3245b28 | 864 | static void falcon_switch_mac(struct efx_nic *efx) |
177dfcd8 BH |
865 | { |
866 | struct efx_mac_operations *old_mac_op = efx->mac_op; | |
55edc6e6 BH |
867 | struct falcon_nic_data *nic_data = efx->nic_data; |
868 | unsigned int stats_done_offset; | |
177dfcd8 | 869 | |
0cc12838 | 870 | WARN_ON(!mutex_is_locked(&efx->mac_lock)); |
d3245b28 BH |
871 | WARN_ON(nic_data->stats_disable_count == 0); |
872 | ||
177dfcd8 BH |
873 | efx->mac_op = (EFX_IS10G(efx) ? |
874 | &falcon_xmac_operations : &falcon_gmac_operations); | |
177dfcd8 | 875 | |
55edc6e6 BH |
876 | if (EFX_IS10G(efx)) |
877 | stats_done_offset = XgDmaDone_offset; | |
878 | else | |
879 | stats_done_offset = GDmaDone_offset; | |
880 | nic_data->stats_dma_done = efx->stats_buffer.addr + stats_done_offset; | |
881 | ||
0cc12838 | 882 | if (old_mac_op == efx->mac_op) |
d3245b28 | 883 | return; |
177dfcd8 | 884 | |
26deba50 SH |
885 | falcon_clock_mac(efx); |
886 | ||
62776d03 BH |
887 | netif_dbg(efx, hw, efx->net_dev, "selected %cMAC\n", |
888 | EFX_IS10G(efx) ? 'X' : 'G'); | |
0cc12838 | 889 | /* Not all macs support a mac-level link state */ |
9007b9fa | 890 | efx->xmac_poll_required = false; |
d3245b28 | 891 | falcon_reset_macs(efx); |
177dfcd8 BH |
892 | } |
893 | ||
8ceee660 | 894 | /* This call is responsible for hooking in the MAC and PHY operations */ |
ef2b90ee | 895 | static int falcon_probe_port(struct efx_nic *efx) |
8ceee660 BH |
896 | { |
897 | int rc; | |
898 | ||
96c45726 BH |
899 | switch (efx->phy_type) { |
900 | case PHY_TYPE_SFX7101: | |
901 | efx->phy_op = &falcon_sfx7101_phy_ops; | |
902 | break; | |
903 | case PHY_TYPE_SFT9001A: | |
904 | case PHY_TYPE_SFT9001B: | |
905 | efx->phy_op = &falcon_sft9001_phy_ops; | |
906 | break; | |
907 | case PHY_TYPE_QT2022C2: | |
908 | case PHY_TYPE_QT2025C: | |
b37b62fe | 909 | efx->phy_op = &falcon_qt202x_phy_ops; |
96c45726 BH |
910 | break; |
911 | default: | |
62776d03 BH |
912 | netif_err(efx, probe, efx->net_dev, "Unknown PHY type %d\n", |
913 | efx->phy_type); | |
96c45726 BH |
914 | return -ENODEV; |
915 | } | |
916 | ||
c1c4f453 | 917 | /* Fill out MDIO structure and loopback modes */ |
68e7f45e BH |
918 | efx->mdio.mdio_read = falcon_mdio_read; |
919 | efx->mdio.mdio_write = falcon_mdio_write; | |
c1c4f453 BH |
920 | rc = efx->phy_op->probe(efx); |
921 | if (rc != 0) | |
922 | return rc; | |
8ceee660 | 923 | |
b895d73e SH |
924 | /* Initial assumption */ |
925 | efx->link_state.speed = 10000; | |
926 | efx->link_state.fd = true; | |
927 | ||
8ceee660 | 928 | /* Hardware flow ctrl. FalconA RX FIFO too small for pause generation */ |
daeda630 | 929 | if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) |
04cc8cac | 930 | efx->wanted_fc = EFX_FC_RX | EFX_FC_TX; |
8ceee660 | 931 | else |
04cc8cac | 932 | efx->wanted_fc = EFX_FC_RX; |
7a6b8f6f SH |
933 | if (efx->mdio.mmds & MDIO_DEVS_AN) |
934 | efx->wanted_fc |= EFX_FC_AUTO; | |
8ceee660 BH |
935 | |
936 | /* Allocate buffer for stats */ | |
152b6a62 BH |
937 | rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer, |
938 | FALCON_MAC_STATS_SIZE); | |
8ceee660 BH |
939 | if (rc) |
940 | return rc; | |
62776d03 BH |
941 | netif_dbg(efx, probe, efx->net_dev, |
942 | "stats buffer at %llx (virt %p phys %llx)\n", | |
943 | (u64)efx->stats_buffer.dma_addr, | |
944 | efx->stats_buffer.addr, | |
945 | (u64)virt_to_phys(efx->stats_buffer.addr)); | |
8ceee660 BH |
946 | |
947 | return 0; | |
948 | } | |
949 | ||
ef2b90ee | 950 | static void falcon_remove_port(struct efx_nic *efx) |
8ceee660 | 951 | { |
ff3b00a0 | 952 | efx->phy_op->remove(efx); |
152b6a62 | 953 | efx_nic_free_buffer(efx, &efx->stats_buffer); |
8ceee660 BH |
954 | } |
955 | ||
8c8661e4 BH |
956 | /************************************************************************** |
957 | * | |
958 | * Falcon test code | |
959 | * | |
960 | **************************************************************************/ | |
961 | ||
0aa3fbaa BH |
962 | static int |
963 | falcon_read_nvram(struct efx_nic *efx, struct falcon_nvconfig *nvconfig_out) | |
8c8661e4 BH |
964 | { |
965 | struct falcon_nvconfig *nvconfig; | |
966 | struct efx_spi_device *spi; | |
967 | void *region; | |
968 | int rc, magic_num, struct_ver; | |
969 | __le16 *word, *limit; | |
970 | u32 csum; | |
971 | ||
2f7f5730 BH |
972 | spi = efx->spi_flash ? efx->spi_flash : efx->spi_eeprom; |
973 | if (!spi) | |
974 | return -EINVAL; | |
975 | ||
0a95f563 | 976 | region = kmalloc(FALCON_NVCONFIG_END, GFP_KERNEL); |
8c8661e4 BH |
977 | if (!region) |
978 | return -ENOMEM; | |
3e6c4538 | 979 | nvconfig = region + FALCON_NVCONFIG_OFFSET; |
8c8661e4 | 980 | |
f4150724 | 981 | mutex_lock(&efx->spi_lock); |
76884835 | 982 | rc = falcon_spi_read(efx, spi, 0, FALCON_NVCONFIG_END, NULL, region); |
f4150724 | 983 | mutex_unlock(&efx->spi_lock); |
8c8661e4 | 984 | if (rc) { |
62776d03 BH |
985 | netif_err(efx, hw, efx->net_dev, "Failed to read %s\n", |
986 | efx->spi_flash ? "flash" : "EEPROM"); | |
8c8661e4 BH |
987 | rc = -EIO; |
988 | goto out; | |
989 | } | |
990 | ||
991 | magic_num = le16_to_cpu(nvconfig->board_magic_num); | |
992 | struct_ver = le16_to_cpu(nvconfig->board_struct_ver); | |
993 | ||
994 | rc = -EINVAL; | |
3e6c4538 | 995 | if (magic_num != FALCON_NVCONFIG_BOARD_MAGIC_NUM) { |
62776d03 BH |
996 | netif_err(efx, hw, efx->net_dev, |
997 | "NVRAM bad magic 0x%x\n", magic_num); | |
8c8661e4 BH |
998 | goto out; |
999 | } | |
1000 | if (struct_ver < 2) { | |
62776d03 BH |
1001 | netif_err(efx, hw, efx->net_dev, |
1002 | "NVRAM has ancient version 0x%x\n", struct_ver); | |
8c8661e4 BH |
1003 | goto out; |
1004 | } else if (struct_ver < 4) { | |
1005 | word = &nvconfig->board_magic_num; | |
1006 | limit = (__le16 *) (nvconfig + 1); | |
1007 | } else { | |
1008 | word = region; | |
0a95f563 | 1009 | limit = region + FALCON_NVCONFIG_END; |
8c8661e4 BH |
1010 | } |
1011 | for (csum = 0; word < limit; ++word) | |
1012 | csum += le16_to_cpu(*word); | |
1013 | ||
1014 | if (~csum & 0xffff) { | |
62776d03 BH |
1015 | netif_err(efx, hw, efx->net_dev, |
1016 | "NVRAM has incorrect checksum\n"); | |
8c8661e4 BH |
1017 | goto out; |
1018 | } | |
1019 | ||
1020 | rc = 0; | |
1021 | if (nvconfig_out) | |
1022 | memcpy(nvconfig_out, nvconfig, sizeof(*nvconfig)); | |
1023 | ||
1024 | out: | |
1025 | kfree(region); | |
1026 | return rc; | |
1027 | } | |
1028 | ||
0aa3fbaa BH |
1029 | static int falcon_test_nvram(struct efx_nic *efx) |
1030 | { | |
1031 | return falcon_read_nvram(efx, NULL); | |
1032 | } | |
1033 | ||
152b6a62 | 1034 | static const struct efx_nic_register_test falcon_b0_register_tests[] = { |
3e6c4538 | 1035 | { FR_AZ_ADR_REGION, |
4cddca54 | 1036 | EFX_OWORD32(0x0003FFFF, 0x0003FFFF, 0x0003FFFF, 0x0003FFFF) }, |
3e6c4538 | 1037 | { FR_AZ_RX_CFG, |
8c8661e4 | 1038 | EFX_OWORD32(0xFFFFFFFE, 0x00017FFF, 0x00000000, 0x00000000) }, |
3e6c4538 | 1039 | { FR_AZ_TX_CFG, |
8c8661e4 | 1040 | EFX_OWORD32(0x7FFF0037, 0x00000000, 0x00000000, 0x00000000) }, |
3e6c4538 | 1041 | { FR_AZ_TX_RESERVED, |
8c8661e4 | 1042 | EFX_OWORD32(0xFFFEFE80, 0x1FFFFFFF, 0x020000FE, 0x007FFFFF) }, |
3e6c4538 | 1043 | { FR_AB_MAC_CTRL, |
8c8661e4 | 1044 | EFX_OWORD32(0xFFFF0000, 0x00000000, 0x00000000, 0x00000000) }, |
3e6c4538 | 1045 | { FR_AZ_SRM_TX_DC_CFG, |
8c8661e4 | 1046 | EFX_OWORD32(0x001FFFFF, 0x00000000, 0x00000000, 0x00000000) }, |
3e6c4538 | 1047 | { FR_AZ_RX_DC_CFG, |
8c8661e4 | 1048 | EFX_OWORD32(0x0000000F, 0x00000000, 0x00000000, 0x00000000) }, |
3e6c4538 | 1049 | { FR_AZ_RX_DC_PF_WM, |
8c8661e4 | 1050 | EFX_OWORD32(0x000003FF, 0x00000000, 0x00000000, 0x00000000) }, |
3e6c4538 | 1051 | { FR_BZ_DP_CTRL, |
8c8661e4 | 1052 | EFX_OWORD32(0x00000FFF, 0x00000000, 0x00000000, 0x00000000) }, |
3e6c4538 | 1053 | { FR_AB_GM_CFG2, |
177dfcd8 | 1054 | EFX_OWORD32(0x00007337, 0x00000000, 0x00000000, 0x00000000) }, |
3e6c4538 | 1055 | { FR_AB_GMF_CFG0, |
177dfcd8 | 1056 | EFX_OWORD32(0x00001F1F, 0x00000000, 0x00000000, 0x00000000) }, |
3e6c4538 | 1057 | { FR_AB_XM_GLB_CFG, |
8c8661e4 | 1058 | EFX_OWORD32(0x00000C68, 0x00000000, 0x00000000, 0x00000000) }, |
3e6c4538 | 1059 | { FR_AB_XM_TX_CFG, |
8c8661e4 | 1060 | EFX_OWORD32(0x00080164, 0x00000000, 0x00000000, 0x00000000) }, |
3e6c4538 | 1061 | { FR_AB_XM_RX_CFG, |
8c8661e4 | 1062 | EFX_OWORD32(0x07100A0C, 0x00000000, 0x00000000, 0x00000000) }, |
3e6c4538 | 1063 | { FR_AB_XM_RX_PARAM, |
8c8661e4 | 1064 | EFX_OWORD32(0x00001FF8, 0x00000000, 0x00000000, 0x00000000) }, |
3e6c4538 | 1065 | { FR_AB_XM_FC, |
8c8661e4 | 1066 | EFX_OWORD32(0xFFFF0001, 0x00000000, 0x00000000, 0x00000000) }, |
3e6c4538 | 1067 | { FR_AB_XM_ADR_LO, |
8c8661e4 | 1068 | EFX_OWORD32(0xFFFFFFFF, 0x00000000, 0x00000000, 0x00000000) }, |
3e6c4538 | 1069 | { FR_AB_XX_SD_CTL, |
8c8661e4 BH |
1070 | EFX_OWORD32(0x0003FF0F, 0x00000000, 0x00000000, 0x00000000) }, |
1071 | }; | |
1072 | ||
152b6a62 BH |
1073 | static int falcon_b0_test_registers(struct efx_nic *efx) |
1074 | { | |
1075 | return efx_nic_test_registers(efx, falcon_b0_register_tests, | |
1076 | ARRAY_SIZE(falcon_b0_register_tests)); | |
1077 | } | |
1078 | ||
8ceee660 BH |
1079 | /************************************************************************** |
1080 | * | |
1081 | * Device reset | |
1082 | * | |
1083 | ************************************************************************** | |
1084 | */ | |
1085 | ||
1086 | /* Resets NIC to known state. This routine must be called in process | |
1087 | * context and is allowed to sleep. */ | |
ef2b90ee | 1088 | static int falcon_reset_hw(struct efx_nic *efx, enum reset_type method) |
8ceee660 BH |
1089 | { |
1090 | struct falcon_nic_data *nic_data = efx->nic_data; | |
1091 | efx_oword_t glb_ctl_reg_ker; | |
1092 | int rc; | |
1093 | ||
62776d03 BH |
1094 | netif_dbg(efx, hw, efx->net_dev, "performing %s hardware reset\n", |
1095 | RESET_TYPE(method)); | |
8ceee660 BH |
1096 | |
1097 | /* Initiate device reset */ | |
1098 | if (method == RESET_TYPE_WORLD) { | |
1099 | rc = pci_save_state(efx->pci_dev); | |
1100 | if (rc) { | |
62776d03 BH |
1101 | netif_err(efx, drv, efx->net_dev, |
1102 | "failed to backup PCI state of primary " | |
1103 | "function prior to hardware reset\n"); | |
8ceee660 BH |
1104 | goto fail1; |
1105 | } | |
152b6a62 | 1106 | if (efx_nic_is_dual_func(efx)) { |
8ceee660 BH |
1107 | rc = pci_save_state(nic_data->pci_dev2); |
1108 | if (rc) { | |
62776d03 BH |
1109 | netif_err(efx, drv, efx->net_dev, |
1110 | "failed to backup PCI state of " | |
1111 | "secondary function prior to " | |
1112 | "hardware reset\n"); | |
8ceee660 BH |
1113 | goto fail2; |
1114 | } | |
1115 | } | |
1116 | ||
1117 | EFX_POPULATE_OWORD_2(glb_ctl_reg_ker, | |
3e6c4538 BH |
1118 | FRF_AB_EXT_PHY_RST_DUR, |
1119 | FFE_AB_EXT_PHY_RST_DUR_10240US, | |
1120 | FRF_AB_SWRST, 1); | |
8ceee660 | 1121 | } else { |
8ceee660 | 1122 | EFX_POPULATE_OWORD_7(glb_ctl_reg_ker, |
3e6c4538 BH |
1123 | /* exclude PHY from "invisible" reset */ |
1124 | FRF_AB_EXT_PHY_RST_CTL, | |
1125 | method == RESET_TYPE_INVISIBLE, | |
1126 | /* exclude EEPROM/flash and PCIe */ | |
1127 | FRF_AB_PCIE_CORE_RST_CTL, 1, | |
1128 | FRF_AB_PCIE_NSTKY_RST_CTL, 1, | |
1129 | FRF_AB_PCIE_SD_RST_CTL, 1, | |
1130 | FRF_AB_EE_RST_CTL, 1, | |
1131 | FRF_AB_EXT_PHY_RST_DUR, | |
1132 | FFE_AB_EXT_PHY_RST_DUR_10240US, | |
1133 | FRF_AB_SWRST, 1); | |
1134 | } | |
12d00cad | 1135 | efx_writeo(efx, &glb_ctl_reg_ker, FR_AB_GLB_CTL); |
8ceee660 | 1136 | |
62776d03 | 1137 | netif_dbg(efx, hw, efx->net_dev, "waiting for hardware reset\n"); |
8ceee660 BH |
1138 | schedule_timeout_uninterruptible(HZ / 20); |
1139 | ||
1140 | /* Restore PCI configuration if needed */ | |
1141 | if (method == RESET_TYPE_WORLD) { | |
152b6a62 | 1142 | if (efx_nic_is_dual_func(efx)) { |
8ceee660 BH |
1143 | rc = pci_restore_state(nic_data->pci_dev2); |
1144 | if (rc) { | |
62776d03 BH |
1145 | netif_err(efx, drv, efx->net_dev, |
1146 | "failed to restore PCI config for " | |
1147 | "the secondary function\n"); | |
8ceee660 BH |
1148 | goto fail3; |
1149 | } | |
1150 | } | |
1151 | rc = pci_restore_state(efx->pci_dev); | |
1152 | if (rc) { | |
62776d03 BH |
1153 | netif_err(efx, drv, efx->net_dev, |
1154 | "failed to restore PCI config for the " | |
1155 | "primary function\n"); | |
8ceee660 BH |
1156 | goto fail4; |
1157 | } | |
62776d03 BH |
1158 | netif_dbg(efx, drv, efx->net_dev, |
1159 | "successfully restored PCI config\n"); | |
8ceee660 BH |
1160 | } |
1161 | ||
1162 | /* Assert that reset complete */ | |
12d00cad | 1163 | efx_reado(efx, &glb_ctl_reg_ker, FR_AB_GLB_CTL); |
3e6c4538 | 1164 | if (EFX_OWORD_FIELD(glb_ctl_reg_ker, FRF_AB_SWRST) != 0) { |
8ceee660 | 1165 | rc = -ETIMEDOUT; |
62776d03 BH |
1166 | netif_err(efx, hw, efx->net_dev, |
1167 | "timed out waiting for hardware reset\n"); | |
8ceee660 BH |
1168 | goto fail5; |
1169 | } | |
62776d03 | 1170 | netif_dbg(efx, hw, efx->net_dev, "hardware reset complete\n"); |
8ceee660 BH |
1171 | |
1172 | return 0; | |
1173 | ||
1174 | /* pci_save_state() and pci_restore_state() MUST be called in pairs */ | |
1175 | fail2: | |
1176 | fail3: | |
1177 | pci_restore_state(efx->pci_dev); | |
1178 | fail1: | |
1179 | fail4: | |
1180 | fail5: | |
1181 | return rc; | |
1182 | } | |
1183 | ||
ef2b90ee | 1184 | static void falcon_monitor(struct efx_nic *efx) |
fe75820b | 1185 | { |
fdaa9aed | 1186 | bool link_changed; |
fe75820b BH |
1187 | int rc; |
1188 | ||
fdaa9aed SH |
1189 | BUG_ON(!mutex_is_locked(&efx->mac_lock)); |
1190 | ||
fe75820b BH |
1191 | rc = falcon_board(efx)->type->monitor(efx); |
1192 | if (rc) { | |
62776d03 BH |
1193 | netif_err(efx, hw, efx->net_dev, |
1194 | "Board sensor %s; shutting down PHY\n", | |
1195 | (rc == -ERANGE) ? "reported fault" : "failed"); | |
fe75820b | 1196 | efx->phy_mode |= PHY_MODE_LOW_POWER; |
d3245b28 BH |
1197 | rc = __efx_reconfigure_port(efx); |
1198 | WARN_ON(rc); | |
fe75820b | 1199 | } |
fdaa9aed SH |
1200 | |
1201 | if (LOOPBACK_INTERNAL(efx)) | |
1202 | link_changed = falcon_loopback_link_poll(efx); | |
1203 | else | |
1204 | link_changed = efx->phy_op->poll(efx); | |
1205 | ||
1206 | if (link_changed) { | |
1207 | falcon_stop_nic_stats(efx); | |
1208 | falcon_deconfigure_mac_wrapper(efx); | |
1209 | ||
1210 | falcon_switch_mac(efx); | |
d3245b28 BH |
1211 | rc = efx->mac_op->reconfigure(efx); |
1212 | BUG_ON(rc); | |
fdaa9aed SH |
1213 | |
1214 | falcon_start_nic_stats(efx); | |
1215 | ||
1216 | efx_link_status_changed(efx); | |
1217 | } | |
1218 | ||
9007b9fa BH |
1219 | if (EFX_IS10G(efx)) |
1220 | falcon_poll_xmac(efx); | |
fe75820b BH |
1221 | } |
1222 | ||
8ceee660 BH |
1223 | /* Zeroes out the SRAM contents. This routine must be called in |
1224 | * process context and is allowed to sleep. | |
1225 | */ | |
1226 | static int falcon_reset_sram(struct efx_nic *efx) | |
1227 | { | |
1228 | efx_oword_t srm_cfg_reg_ker, gpio_cfg_reg_ker; | |
1229 | int count; | |
1230 | ||
1231 | /* Set the SRAM wake/sleep GPIO appropriately. */ | |
12d00cad | 1232 | efx_reado(efx, &gpio_cfg_reg_ker, FR_AB_GPIO_CTL); |
3e6c4538 BH |
1233 | EFX_SET_OWORD_FIELD(gpio_cfg_reg_ker, FRF_AB_GPIO1_OEN, 1); |
1234 | EFX_SET_OWORD_FIELD(gpio_cfg_reg_ker, FRF_AB_GPIO1_OUT, 1); | |
12d00cad | 1235 | efx_writeo(efx, &gpio_cfg_reg_ker, FR_AB_GPIO_CTL); |
8ceee660 BH |
1236 | |
1237 | /* Initiate SRAM reset */ | |
1238 | EFX_POPULATE_OWORD_2(srm_cfg_reg_ker, | |
3e6c4538 BH |
1239 | FRF_AZ_SRM_INIT_EN, 1, |
1240 | FRF_AZ_SRM_NB_SZ, 0); | |
12d00cad | 1241 | efx_writeo(efx, &srm_cfg_reg_ker, FR_AZ_SRM_CFG); |
8ceee660 BH |
1242 | |
1243 | /* Wait for SRAM reset to complete */ | |
1244 | count = 0; | |
1245 | do { | |
62776d03 BH |
1246 | netif_dbg(efx, hw, efx->net_dev, |
1247 | "waiting for SRAM reset (attempt %d)...\n", count); | |
8ceee660 BH |
1248 | |
1249 | /* SRAM reset is slow; expect around 16ms */ | |
1250 | schedule_timeout_uninterruptible(HZ / 50); | |
1251 | ||
1252 | /* Check for reset complete */ | |
12d00cad | 1253 | efx_reado(efx, &srm_cfg_reg_ker, FR_AZ_SRM_CFG); |
3e6c4538 | 1254 | if (!EFX_OWORD_FIELD(srm_cfg_reg_ker, FRF_AZ_SRM_INIT_EN)) { |
62776d03 BH |
1255 | netif_dbg(efx, hw, efx->net_dev, |
1256 | "SRAM reset complete\n"); | |
8ceee660 BH |
1257 | |
1258 | return 0; | |
1259 | } | |
1260 | } while (++count < 20); /* wait upto 0.4 sec */ | |
1261 | ||
62776d03 | 1262 | netif_err(efx, hw, efx->net_dev, "timed out waiting for SRAM reset\n"); |
8ceee660 BH |
1263 | return -ETIMEDOUT; |
1264 | } | |
1265 | ||
4a5b504d BH |
1266 | static int falcon_spi_device_init(struct efx_nic *efx, |
1267 | struct efx_spi_device **spi_device_ret, | |
1268 | unsigned int device_id, u32 device_type) | |
1269 | { | |
1270 | struct efx_spi_device *spi_device; | |
1271 | ||
1272 | if (device_type != 0) { | |
0c53d8c8 | 1273 | spi_device = kzalloc(sizeof(*spi_device), GFP_KERNEL); |
4a5b504d BH |
1274 | if (!spi_device) |
1275 | return -ENOMEM; | |
1276 | spi_device->device_id = device_id; | |
1277 | spi_device->size = | |
1278 | 1 << SPI_DEV_TYPE_FIELD(device_type, SPI_DEV_TYPE_SIZE); | |
1279 | spi_device->addr_len = | |
1280 | SPI_DEV_TYPE_FIELD(device_type, SPI_DEV_TYPE_ADDR_LEN); | |
1281 | spi_device->munge_address = (spi_device->size == 1 << 9 && | |
1282 | spi_device->addr_len == 1); | |
f4150724 BH |
1283 | spi_device->erase_command = |
1284 | SPI_DEV_TYPE_FIELD(device_type, SPI_DEV_TYPE_ERASE_CMD); | |
1285 | spi_device->erase_size = | |
1286 | 1 << SPI_DEV_TYPE_FIELD(device_type, | |
1287 | SPI_DEV_TYPE_ERASE_SIZE); | |
4a5b504d BH |
1288 | spi_device->block_size = |
1289 | 1 << SPI_DEV_TYPE_FIELD(device_type, | |
1290 | SPI_DEV_TYPE_BLOCK_SIZE); | |
4a5b504d BH |
1291 | } else { |
1292 | spi_device = NULL; | |
1293 | } | |
1294 | ||
1295 | kfree(*spi_device_ret); | |
1296 | *spi_device_ret = spi_device; | |
1297 | return 0; | |
1298 | } | |
1299 | ||
4a5b504d BH |
1300 | static void falcon_remove_spi_devices(struct efx_nic *efx) |
1301 | { | |
1302 | kfree(efx->spi_eeprom); | |
1303 | efx->spi_eeprom = NULL; | |
1304 | kfree(efx->spi_flash); | |
1305 | efx->spi_flash = NULL; | |
1306 | } | |
1307 | ||
8ceee660 BH |
1308 | /* Extract non-volatile configuration */ |
1309 | static int falcon_probe_nvconfig(struct efx_nic *efx) | |
1310 | { | |
1311 | struct falcon_nvconfig *nvconfig; | |
8c8661e4 | 1312 | int board_rev; |
8ceee660 BH |
1313 | int rc; |
1314 | ||
8ceee660 | 1315 | nvconfig = kmalloc(sizeof(*nvconfig), GFP_KERNEL); |
4a5b504d BH |
1316 | if (!nvconfig) |
1317 | return -ENOMEM; | |
8ceee660 | 1318 | |
8c8661e4 BH |
1319 | rc = falcon_read_nvram(efx, nvconfig); |
1320 | if (rc == -EINVAL) { | |
62776d03 BH |
1321 | netif_err(efx, probe, efx->net_dev, |
1322 | "NVRAM is invalid therefore using defaults\n"); | |
8ceee660 | 1323 | efx->phy_type = PHY_TYPE_NONE; |
68e7f45e | 1324 | efx->mdio.prtad = MDIO_PRTAD_NONE; |
8ceee660 | 1325 | board_rev = 0; |
8c8661e4 BH |
1326 | rc = 0; |
1327 | } else if (rc) { | |
1328 | goto fail1; | |
8ceee660 BH |
1329 | } else { |
1330 | struct falcon_nvconfig_board_v2 *v2 = &nvconfig->board_v2; | |
4a5b504d | 1331 | struct falcon_nvconfig_board_v3 *v3 = &nvconfig->board_v3; |
8ceee660 BH |
1332 | |
1333 | efx->phy_type = v2->port0_phy_type; | |
68e7f45e | 1334 | efx->mdio.prtad = v2->port0_phy_addr; |
8ceee660 | 1335 | board_rev = le16_to_cpu(v2->board_revision); |
4a5b504d | 1336 | |
8c8661e4 | 1337 | if (le16_to_cpu(nvconfig->board_struct_ver) >= 3) { |
3e6c4538 BH |
1338 | rc = falcon_spi_device_init( |
1339 | efx, &efx->spi_flash, FFE_AB_SPI_DEVICE_FLASH, | |
1340 | le32_to_cpu(v3->spi_device_type | |
1341 | [FFE_AB_SPI_DEVICE_FLASH])); | |
4a5b504d BH |
1342 | if (rc) |
1343 | goto fail2; | |
3e6c4538 BH |
1344 | rc = falcon_spi_device_init( |
1345 | efx, &efx->spi_eeprom, FFE_AB_SPI_DEVICE_EEPROM, | |
1346 | le32_to_cpu(v3->spi_device_type | |
1347 | [FFE_AB_SPI_DEVICE_EEPROM])); | |
4a5b504d BH |
1348 | if (rc) |
1349 | goto fail2; | |
1350 | } | |
8ceee660 BH |
1351 | } |
1352 | ||
8c8661e4 BH |
1353 | /* Read the MAC addresses */ |
1354 | memcpy(efx->mac_address, nvconfig->mac_address[0], ETH_ALEN); | |
1355 | ||
62776d03 BH |
1356 | netif_dbg(efx, probe, efx->net_dev, "PHY is %d phy_id %d\n", |
1357 | efx->phy_type, efx->mdio.prtad); | |
8ceee660 | 1358 | |
e41c11ee BH |
1359 | rc = falcon_probe_board(efx, board_rev); |
1360 | if (rc) | |
1361 | goto fail2; | |
8ceee660 | 1362 | |
4a5b504d BH |
1363 | kfree(nvconfig); |
1364 | return 0; | |
1365 | ||
1366 | fail2: | |
1367 | falcon_remove_spi_devices(efx); | |
1368 | fail1: | |
8ceee660 BH |
1369 | kfree(nvconfig); |
1370 | return rc; | |
1371 | } | |
1372 | ||
4a5b504d BH |
1373 | /* Probe all SPI devices on the NIC */ |
1374 | static void falcon_probe_spi_devices(struct efx_nic *efx) | |
1375 | { | |
1376 | efx_oword_t nic_stat, gpio_ctl, ee_vpd_cfg; | |
2f7f5730 | 1377 | int boot_dev; |
4a5b504d | 1378 | |
12d00cad BH |
1379 | efx_reado(efx, &gpio_ctl, FR_AB_GPIO_CTL); |
1380 | efx_reado(efx, &nic_stat, FR_AB_NIC_STAT); | |
1381 | efx_reado(efx, &ee_vpd_cfg, FR_AB_EE_VPD_CFG0); | |
4a5b504d | 1382 | |
3e6c4538 BH |
1383 | if (EFX_OWORD_FIELD(gpio_ctl, FRF_AB_GPIO3_PWRUP_VALUE)) { |
1384 | boot_dev = (EFX_OWORD_FIELD(nic_stat, FRF_AB_SF_PRST) ? | |
1385 | FFE_AB_SPI_DEVICE_FLASH : FFE_AB_SPI_DEVICE_EEPROM); | |
62776d03 BH |
1386 | netif_dbg(efx, probe, efx->net_dev, "Booted from %s\n", |
1387 | boot_dev == FFE_AB_SPI_DEVICE_FLASH ? | |
1388 | "flash" : "EEPROM"); | |
2f7f5730 BH |
1389 | } else { |
1390 | /* Disable VPD and set clock dividers to safe | |
1391 | * values for initial programming. */ | |
1392 | boot_dev = -1; | |
62776d03 BH |
1393 | netif_dbg(efx, probe, efx->net_dev, |
1394 | "Booted from internal ASIC settings;" | |
1395 | " setting SPI config\n"); | |
3e6c4538 | 1396 | EFX_POPULATE_OWORD_3(ee_vpd_cfg, FRF_AB_EE_VPD_EN, 0, |
2f7f5730 | 1397 | /* 125 MHz / 7 ~= 20 MHz */ |
3e6c4538 | 1398 | FRF_AB_EE_SF_CLOCK_DIV, 7, |
2f7f5730 | 1399 | /* 125 MHz / 63 ~= 2 MHz */ |
3e6c4538 | 1400 | FRF_AB_EE_EE_CLOCK_DIV, 63); |
12d00cad | 1401 | efx_writeo(efx, &ee_vpd_cfg, FR_AB_EE_VPD_CFG0); |
4a5b504d BH |
1402 | } |
1403 | ||
3e6c4538 BH |
1404 | if (boot_dev == FFE_AB_SPI_DEVICE_FLASH) |
1405 | falcon_spi_device_init(efx, &efx->spi_flash, | |
1406 | FFE_AB_SPI_DEVICE_FLASH, | |
2f7f5730 | 1407 | default_flash_type); |
3e6c4538 BH |
1408 | if (boot_dev == FFE_AB_SPI_DEVICE_EEPROM) |
1409 | falcon_spi_device_init(efx, &efx->spi_eeprom, | |
1410 | FFE_AB_SPI_DEVICE_EEPROM, | |
2f7f5730 | 1411 | large_eeprom_type); |
4a5b504d BH |
1412 | } |
1413 | ||
ef2b90ee | 1414 | static int falcon_probe_nic(struct efx_nic *efx) |
8ceee660 BH |
1415 | { |
1416 | struct falcon_nic_data *nic_data; | |
e775fb93 | 1417 | struct falcon_board *board; |
8ceee660 BH |
1418 | int rc; |
1419 | ||
8ceee660 BH |
1420 | /* Allocate storage for hardware specific data */ |
1421 | nic_data = kzalloc(sizeof(*nic_data), GFP_KERNEL); | |
88c59425 BH |
1422 | if (!nic_data) |
1423 | return -ENOMEM; | |
5daab96d | 1424 | efx->nic_data = nic_data; |
8ceee660 | 1425 | |
57849460 BH |
1426 | rc = -ENODEV; |
1427 | ||
1428 | if (efx_nic_fpga_ver(efx) != 0) { | |
62776d03 BH |
1429 | netif_err(efx, probe, efx->net_dev, |
1430 | "Falcon FPGA not supported\n"); | |
8ceee660 | 1431 | goto fail1; |
57849460 BH |
1432 | } |
1433 | ||
1434 | if (efx_nic_rev(efx) <= EFX_REV_FALCON_A1) { | |
1435 | efx_oword_t nic_stat; | |
1436 | struct pci_dev *dev; | |
1437 | u8 pci_rev = efx->pci_dev->revision; | |
8ceee660 | 1438 | |
57849460 | 1439 | if ((pci_rev == 0xff) || (pci_rev == 0)) { |
62776d03 BH |
1440 | netif_err(efx, probe, efx->net_dev, |
1441 | "Falcon rev A0 not supported\n"); | |
57849460 BH |
1442 | goto fail1; |
1443 | } | |
1444 | efx_reado(efx, &nic_stat, FR_AB_NIC_STAT); | |
1445 | if (EFX_OWORD_FIELD(nic_stat, FRF_AB_STRAP_10G) == 0) { | |
62776d03 BH |
1446 | netif_err(efx, probe, efx->net_dev, |
1447 | "Falcon rev A1 1G not supported\n"); | |
57849460 BH |
1448 | goto fail1; |
1449 | } | |
1450 | if (EFX_OWORD_FIELD(nic_stat, FRF_AA_STRAP_PCIE) == 0) { | |
62776d03 BH |
1451 | netif_err(efx, probe, efx->net_dev, |
1452 | "Falcon rev A1 PCI-X not supported\n"); | |
57849460 BH |
1453 | goto fail1; |
1454 | } | |
8ceee660 | 1455 | |
57849460 | 1456 | dev = pci_dev_get(efx->pci_dev); |
8ceee660 BH |
1457 | while ((dev = pci_get_device(EFX_VENDID_SFC, FALCON_A_S_DEVID, |
1458 | dev))) { | |
1459 | if (dev->bus == efx->pci_dev->bus && | |
1460 | dev->devfn == efx->pci_dev->devfn + 1) { | |
1461 | nic_data->pci_dev2 = dev; | |
1462 | break; | |
1463 | } | |
1464 | } | |
1465 | if (!nic_data->pci_dev2) { | |
62776d03 BH |
1466 | netif_err(efx, probe, efx->net_dev, |
1467 | "failed to find secondary function\n"); | |
8ceee660 BH |
1468 | rc = -ENODEV; |
1469 | goto fail2; | |
1470 | } | |
1471 | } | |
1472 | ||
1473 | /* Now we can reset the NIC */ | |
1474 | rc = falcon_reset_hw(efx, RESET_TYPE_ALL); | |
1475 | if (rc) { | |
62776d03 | 1476 | netif_err(efx, probe, efx->net_dev, "failed to reset NIC\n"); |
8ceee660 BH |
1477 | goto fail3; |
1478 | } | |
1479 | ||
1480 | /* Allocate memory for INT_KER */ | |
152b6a62 | 1481 | rc = efx_nic_alloc_buffer(efx, &efx->irq_status, sizeof(efx_oword_t)); |
8ceee660 BH |
1482 | if (rc) |
1483 | goto fail4; | |
1484 | BUG_ON(efx->irq_status.dma_addr & 0x0f); | |
1485 | ||
62776d03 BH |
1486 | netif_dbg(efx, probe, efx->net_dev, |
1487 | "INT_KER at %llx (virt %p phys %llx)\n", | |
1488 | (u64)efx->irq_status.dma_addr, | |
1489 | efx->irq_status.addr, | |
1490 | (u64)virt_to_phys(efx->irq_status.addr)); | |
8ceee660 | 1491 | |
4a5b504d BH |
1492 | falcon_probe_spi_devices(efx); |
1493 | ||
8ceee660 BH |
1494 | /* Read in the non-volatile configuration */ |
1495 | rc = falcon_probe_nvconfig(efx); | |
1496 | if (rc) | |
1497 | goto fail5; | |
1498 | ||
37b5a603 | 1499 | /* Initialise I2C adapter */ |
e775fb93 BH |
1500 | board = falcon_board(efx); |
1501 | board->i2c_adap.owner = THIS_MODULE; | |
1502 | board->i2c_data = falcon_i2c_bit_operations; | |
1503 | board->i2c_data.data = efx; | |
1504 | board->i2c_adap.algo_data = &board->i2c_data; | |
1505 | board->i2c_adap.dev.parent = &efx->pci_dev->dev; | |
1506 | strlcpy(board->i2c_adap.name, "SFC4000 GPIO", | |
1507 | sizeof(board->i2c_adap.name)); | |
1508 | rc = i2c_bit_add_bus(&board->i2c_adap); | |
37b5a603 BH |
1509 | if (rc) |
1510 | goto fail5; | |
1511 | ||
44838a44 | 1512 | rc = falcon_board(efx)->type->init(efx); |
278c0621 | 1513 | if (rc) { |
62776d03 BH |
1514 | netif_err(efx, probe, efx->net_dev, |
1515 | "failed to initialise board\n"); | |
278c0621 BH |
1516 | goto fail6; |
1517 | } | |
1518 | ||
55edc6e6 BH |
1519 | nic_data->stats_disable_count = 1; |
1520 | setup_timer(&nic_data->stats_timer, &falcon_stats_timer_func, | |
1521 | (unsigned long)efx); | |
1522 | ||
8ceee660 BH |
1523 | return 0; |
1524 | ||
278c0621 | 1525 | fail6: |
e775fb93 BH |
1526 | BUG_ON(i2c_del_adapter(&board->i2c_adap)); |
1527 | memset(&board->i2c_adap, 0, sizeof(board->i2c_adap)); | |
8ceee660 | 1528 | fail5: |
4a5b504d | 1529 | falcon_remove_spi_devices(efx); |
152b6a62 | 1530 | efx_nic_free_buffer(efx, &efx->irq_status); |
8ceee660 | 1531 | fail4: |
8ceee660 BH |
1532 | fail3: |
1533 | if (nic_data->pci_dev2) { | |
1534 | pci_dev_put(nic_data->pci_dev2); | |
1535 | nic_data->pci_dev2 = NULL; | |
1536 | } | |
1537 | fail2: | |
8ceee660 BH |
1538 | fail1: |
1539 | kfree(efx->nic_data); | |
1540 | return rc; | |
1541 | } | |
1542 | ||
56241ceb BH |
1543 | static void falcon_init_rx_cfg(struct efx_nic *efx) |
1544 | { | |
1545 | /* Prior to Siena the RX DMA engine will split each frame at | |
1546 | * intervals of RX_USR_BUF_SIZE (32-byte units). We set it to | |
1547 | * be so large that that never happens. */ | |
1548 | const unsigned huge_buf_size = (3 * 4096) >> 5; | |
1549 | /* RX control FIFO thresholds (32 entries) */ | |
1550 | const unsigned ctrl_xon_thr = 20; | |
1551 | const unsigned ctrl_xoff_thr = 25; | |
1552 | /* RX data FIFO thresholds (256-byte units; size varies) */ | |
152b6a62 BH |
1553 | int data_xon_thr = efx_nic_rx_xon_thresh >> 8; |
1554 | int data_xoff_thr = efx_nic_rx_xoff_thresh >> 8; | |
56241ceb BH |
1555 | efx_oword_t reg; |
1556 | ||
12d00cad | 1557 | efx_reado(efx, ®, FR_AZ_RX_CFG); |
daeda630 | 1558 | if (efx_nic_rev(efx) <= EFX_REV_FALCON_A1) { |
625b4514 BH |
1559 | /* Data FIFO size is 5.5K */ |
1560 | if (data_xon_thr < 0) | |
1561 | data_xon_thr = 512 >> 8; | |
1562 | if (data_xoff_thr < 0) | |
1563 | data_xoff_thr = 2048 >> 8; | |
3e6c4538 BH |
1564 | EFX_SET_OWORD_FIELD(reg, FRF_AA_RX_DESC_PUSH_EN, 0); |
1565 | EFX_SET_OWORD_FIELD(reg, FRF_AA_RX_USR_BUF_SIZE, | |
1566 | huge_buf_size); | |
1567 | EFX_SET_OWORD_FIELD(reg, FRF_AA_RX_XON_MAC_TH, data_xon_thr); | |
1568 | EFX_SET_OWORD_FIELD(reg, FRF_AA_RX_XOFF_MAC_TH, data_xoff_thr); | |
1569 | EFX_SET_OWORD_FIELD(reg, FRF_AA_RX_XON_TX_TH, ctrl_xon_thr); | |
1570 | EFX_SET_OWORD_FIELD(reg, FRF_AA_RX_XOFF_TX_TH, ctrl_xoff_thr); | |
56241ceb | 1571 | } else { |
625b4514 BH |
1572 | /* Data FIFO size is 80K; register fields moved */ |
1573 | if (data_xon_thr < 0) | |
1574 | data_xon_thr = 27648 >> 8; /* ~3*max MTU */ | |
1575 | if (data_xoff_thr < 0) | |
1576 | data_xoff_thr = 54272 >> 8; /* ~80Kb - 3*max MTU */ | |
3e6c4538 BH |
1577 | EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_DESC_PUSH_EN, 0); |
1578 | EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_USR_BUF_SIZE, | |
1579 | huge_buf_size); | |
1580 | EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_XON_MAC_TH, data_xon_thr); | |
1581 | EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_XOFF_MAC_TH, data_xoff_thr); | |
1582 | EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_XON_TX_TH, ctrl_xon_thr); | |
1583 | EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_XOFF_TX_TH, ctrl_xoff_thr); | |
39c9cf07 | 1584 | EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_HASH_INSRT_HDR, 1); |
3e6c4538 | 1585 | EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_INGR_EN, 1); |
56241ceb | 1586 | } |
4b0d29dc BH |
1587 | /* Always enable XOFF signal from RX FIFO. We enable |
1588 | * or disable transmission of pause frames at the MAC. */ | |
1589 | EFX_SET_OWORD_FIELD(reg, FRF_AZ_RX_XOFF_MAC_EN, 1); | |
12d00cad | 1590 | efx_writeo(efx, ®, FR_AZ_RX_CFG); |
56241ceb BH |
1591 | } |
1592 | ||
152b6a62 BH |
1593 | /* This call performs hardware-specific global initialisation, such as |
1594 | * defining the descriptor cache sizes and number of RSS channels. | |
1595 | * It does not set up any buffers, descriptor rings or event queues. | |
1596 | */ | |
1597 | static int falcon_init_nic(struct efx_nic *efx) | |
1598 | { | |
1599 | efx_oword_t temp; | |
1600 | int rc; | |
1601 | ||
1602 | /* Use on-chip SRAM */ | |
1603 | efx_reado(efx, &temp, FR_AB_NIC_STAT); | |
1604 | EFX_SET_OWORD_FIELD(temp, FRF_AB_ONCHIP_SRAM, 1); | |
1605 | efx_writeo(efx, &temp, FR_AB_NIC_STAT); | |
1606 | ||
1607 | /* Set the source of the GMAC clock */ | |
1608 | if (efx_nic_rev(efx) == EFX_REV_FALCON_B0) { | |
1609 | efx_reado(efx, &temp, FR_AB_GPIO_CTL); | |
1610 | EFX_SET_OWORD_FIELD(temp, FRF_AB_USE_NIC_CLK, true); | |
1611 | efx_writeo(efx, &temp, FR_AB_GPIO_CTL); | |
1612 | } | |
1613 | ||
1614 | /* Select the correct MAC */ | |
1615 | falcon_clock_mac(efx); | |
1616 | ||
1617 | rc = falcon_reset_sram(efx); | |
1618 | if (rc) | |
1619 | return rc; | |
1620 | ||
1621 | /* Clear the parity enables on the TX data fifos as | |
1622 | * they produce false parity errors because of timing issues | |
1623 | */ | |
1624 | if (EFX_WORKAROUND_5129(efx)) { | |
1625 | efx_reado(efx, &temp, FR_AZ_CSR_SPARE); | |
1626 | EFX_SET_OWORD_FIELD(temp, FRF_AB_MEM_PERR_EN_TX_DATA, 0); | |
1627 | efx_writeo(efx, &temp, FR_AZ_CSR_SPARE); | |
1628 | } | |
1629 | ||
8ceee660 | 1630 | if (EFX_WORKAROUND_7244(efx)) { |
12d00cad | 1631 | efx_reado(efx, &temp, FR_BZ_RX_FILTER_CTL); |
3e6c4538 BH |
1632 | EFX_SET_OWORD_FIELD(temp, FRF_BZ_UDP_FULL_SRCH_LIMIT, 8); |
1633 | EFX_SET_OWORD_FIELD(temp, FRF_BZ_UDP_WILD_SRCH_LIMIT, 8); | |
1634 | EFX_SET_OWORD_FIELD(temp, FRF_BZ_TCP_FULL_SRCH_LIMIT, 8); | |
1635 | EFX_SET_OWORD_FIELD(temp, FRF_BZ_TCP_WILD_SRCH_LIMIT, 8); | |
12d00cad | 1636 | efx_writeo(efx, &temp, FR_BZ_RX_FILTER_CTL); |
8ceee660 | 1637 | } |
8ceee660 | 1638 | |
3e6c4538 | 1639 | /* XXX This is documented only for Falcon A0/A1 */ |
8ceee660 BH |
1640 | /* Setup RX. Wait for descriptor is broken and must |
1641 | * be disabled. RXDP recovery shouldn't be needed, but is. | |
1642 | */ | |
12d00cad | 1643 | efx_reado(efx, &temp, FR_AA_RX_SELF_RST); |
3e6c4538 BH |
1644 | EFX_SET_OWORD_FIELD(temp, FRF_AA_RX_NODESC_WAIT_DIS, 1); |
1645 | EFX_SET_OWORD_FIELD(temp, FRF_AA_RX_SELF_RST_EN, 1); | |
8ceee660 | 1646 | if (EFX_WORKAROUND_5583(efx)) |
3e6c4538 | 1647 | EFX_SET_OWORD_FIELD(temp, FRF_AA_RX_ISCSI_DIS, 1); |
12d00cad | 1648 | efx_writeo(efx, &temp, FR_AA_RX_SELF_RST); |
8ceee660 | 1649 | |
8ceee660 BH |
1650 | /* Do not enable TX_NO_EOP_DISC_EN, since it limits packets to 16 |
1651 | * descriptors (which is bad). | |
1652 | */ | |
12d00cad | 1653 | efx_reado(efx, &temp, FR_AZ_TX_CFG); |
3e6c4538 | 1654 | EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_NO_EOP_DISC_EN, 0); |
12d00cad | 1655 | efx_writeo(efx, &temp, FR_AZ_TX_CFG); |
8ceee660 | 1656 | |
56241ceb | 1657 | falcon_init_rx_cfg(efx); |
8ceee660 BH |
1658 | |
1659 | /* Set destination of both TX and RX Flush events */ | |
daeda630 | 1660 | if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) { |
3e6c4538 | 1661 | EFX_POPULATE_OWORD_1(temp, FRF_BZ_FLS_EVQ_ID, 0); |
12d00cad | 1662 | efx_writeo(efx, &temp, FR_BZ_DP_CTRL); |
8ceee660 BH |
1663 | } |
1664 | ||
152b6a62 BH |
1665 | efx_nic_init_common(efx); |
1666 | ||
8ceee660 BH |
1667 | return 0; |
1668 | } | |
1669 | ||
ef2b90ee | 1670 | static void falcon_remove_nic(struct efx_nic *efx) |
8ceee660 BH |
1671 | { |
1672 | struct falcon_nic_data *nic_data = efx->nic_data; | |
e775fb93 | 1673 | struct falcon_board *board = falcon_board(efx); |
37b5a603 BH |
1674 | int rc; |
1675 | ||
44838a44 | 1676 | board->type->fini(efx); |
278c0621 | 1677 | |
8c870379 | 1678 | /* Remove I2C adapter and clear it in preparation for a retry */ |
e775fb93 | 1679 | rc = i2c_del_adapter(&board->i2c_adap); |
37b5a603 | 1680 | BUG_ON(rc); |
e775fb93 | 1681 | memset(&board->i2c_adap, 0, sizeof(board->i2c_adap)); |
8ceee660 | 1682 | |
4a5b504d | 1683 | falcon_remove_spi_devices(efx); |
152b6a62 | 1684 | efx_nic_free_buffer(efx, &efx->irq_status); |
8ceee660 | 1685 | |
91ad757c | 1686 | falcon_reset_hw(efx, RESET_TYPE_ALL); |
8ceee660 BH |
1687 | |
1688 | /* Release the second function after the reset */ | |
1689 | if (nic_data->pci_dev2) { | |
1690 | pci_dev_put(nic_data->pci_dev2); | |
1691 | nic_data->pci_dev2 = NULL; | |
1692 | } | |
1693 | ||
1694 | /* Tear down the private nic state */ | |
1695 | kfree(efx->nic_data); | |
1696 | efx->nic_data = NULL; | |
1697 | } | |
1698 | ||
ef2b90ee | 1699 | static void falcon_update_nic_stats(struct efx_nic *efx) |
8ceee660 | 1700 | { |
55edc6e6 | 1701 | struct falcon_nic_data *nic_data = efx->nic_data; |
8ceee660 BH |
1702 | efx_oword_t cnt; |
1703 | ||
55edc6e6 BH |
1704 | if (nic_data->stats_disable_count) |
1705 | return; | |
1706 | ||
12d00cad | 1707 | efx_reado(efx, &cnt, FR_AZ_RX_NODESC_DROP); |
3e6c4538 BH |
1708 | efx->n_rx_nodesc_drop_cnt += |
1709 | EFX_OWORD_FIELD(cnt, FRF_AB_RX_NODESC_DROP_CNT); | |
55edc6e6 BH |
1710 | |
1711 | if (nic_data->stats_pending && | |
1712 | *nic_data->stats_dma_done == FALCON_STATS_DONE) { | |
1713 | nic_data->stats_pending = false; | |
1714 | rmb(); /* read the done flag before the stats */ | |
1715 | efx->mac_op->update_stats(efx); | |
1716 | } | |
1717 | } | |
1718 | ||
1719 | void falcon_start_nic_stats(struct efx_nic *efx) | |
1720 | { | |
1721 | struct falcon_nic_data *nic_data = efx->nic_data; | |
1722 | ||
1723 | spin_lock_bh(&efx->stats_lock); | |
1724 | if (--nic_data->stats_disable_count == 0) | |
1725 | falcon_stats_request(efx); | |
1726 | spin_unlock_bh(&efx->stats_lock); | |
1727 | } | |
1728 | ||
1729 | void falcon_stop_nic_stats(struct efx_nic *efx) | |
1730 | { | |
1731 | struct falcon_nic_data *nic_data = efx->nic_data; | |
1732 | int i; | |
1733 | ||
1734 | might_sleep(); | |
1735 | ||
1736 | spin_lock_bh(&efx->stats_lock); | |
1737 | ++nic_data->stats_disable_count; | |
1738 | spin_unlock_bh(&efx->stats_lock); | |
1739 | ||
1740 | del_timer_sync(&nic_data->stats_timer); | |
1741 | ||
1742 | /* Wait enough time for the most recent transfer to | |
1743 | * complete. */ | |
1744 | for (i = 0; i < 4 && nic_data->stats_pending; i++) { | |
1745 | if (*nic_data->stats_dma_done == FALCON_STATS_DONE) | |
1746 | break; | |
1747 | msleep(1); | |
1748 | } | |
1749 | ||
1750 | spin_lock_bh(&efx->stats_lock); | |
1751 | falcon_stats_complete(efx); | |
1752 | spin_unlock_bh(&efx->stats_lock); | |
8ceee660 BH |
1753 | } |
1754 | ||
06629f07 BH |
1755 | static void falcon_set_id_led(struct efx_nic *efx, enum efx_led_mode mode) |
1756 | { | |
1757 | falcon_board(efx)->type->set_id_led(efx, mode); | |
1758 | } | |
1759 | ||
89c758fa BH |
1760 | /************************************************************************** |
1761 | * | |
1762 | * Wake on LAN | |
1763 | * | |
1764 | ************************************************************************** | |
1765 | */ | |
1766 | ||
1767 | static void falcon_get_wol(struct efx_nic *efx, struct ethtool_wolinfo *wol) | |
1768 | { | |
1769 | wol->supported = 0; | |
1770 | wol->wolopts = 0; | |
1771 | memset(&wol->sopass, 0, sizeof(wol->sopass)); | |
1772 | } | |
1773 | ||
1774 | static int falcon_set_wol(struct efx_nic *efx, u32 type) | |
1775 | { | |
1776 | if (type != 0) | |
1777 | return -EINVAL; | |
1778 | return 0; | |
1779 | } | |
1780 | ||
8ceee660 BH |
1781 | /************************************************************************** |
1782 | * | |
754c653a | 1783 | * Revision-dependent attributes used by efx.c and nic.c |
8ceee660 BH |
1784 | * |
1785 | ************************************************************************** | |
1786 | */ | |
1787 | ||
daeda630 | 1788 | struct efx_nic_type falcon_a1_nic_type = { |
ef2b90ee BH |
1789 | .probe = falcon_probe_nic, |
1790 | .remove = falcon_remove_nic, | |
1791 | .init = falcon_init_nic, | |
1792 | .fini = efx_port_dummy_op_void, | |
1793 | .monitor = falcon_monitor, | |
1794 | .reset = falcon_reset_hw, | |
1795 | .probe_port = falcon_probe_port, | |
1796 | .remove_port = falcon_remove_port, | |
1797 | .prepare_flush = falcon_prepare_flush, | |
1798 | .update_stats = falcon_update_nic_stats, | |
1799 | .start_stats = falcon_start_nic_stats, | |
1800 | .stop_stats = falcon_stop_nic_stats, | |
06629f07 | 1801 | .set_id_led = falcon_set_id_led, |
ef2b90ee BH |
1802 | .push_irq_moderation = falcon_push_irq_moderation, |
1803 | .push_multicast_hash = falcon_push_multicast_hash, | |
d3245b28 | 1804 | .reconfigure_port = falcon_reconfigure_port, |
89c758fa BH |
1805 | .get_wol = falcon_get_wol, |
1806 | .set_wol = falcon_set_wol, | |
1807 | .resume_wol = efx_port_dummy_op_void, | |
0aa3fbaa | 1808 | .test_nvram = falcon_test_nvram, |
b895d73e SH |
1809 | .default_mac_ops = &falcon_xmac_operations, |
1810 | ||
daeda630 | 1811 | .revision = EFX_REV_FALCON_A1, |
8ceee660 | 1812 | .mem_map_size = 0x20000, |
3e6c4538 BH |
1813 | .txd_ptr_tbl_base = FR_AA_TX_DESC_PTR_TBL_KER, |
1814 | .rxd_ptr_tbl_base = FR_AA_RX_DESC_PTR_TBL_KER, | |
1815 | .buf_tbl_base = FR_AA_BUF_FULL_TBL_KER, | |
1816 | .evq_ptr_tbl_base = FR_AA_EVQ_PTR_TBL_KER, | |
1817 | .evq_rptr_tbl_base = FR_AA_EVQ_RPTR_KER, | |
6d51d307 | 1818 | .max_dma_mask = DMA_BIT_MASK(FSF_AZ_TX_KER_BUF_ADDR_WIDTH), |
8ceee660 BH |
1819 | .rx_buffer_padding = 0x24, |
1820 | .max_interrupt_mode = EFX_INT_MODE_MSI, | |
1821 | .phys_addr_channels = 4, | |
0228f5cd BH |
1822 | .tx_dc_base = 0x130000, |
1823 | .rx_dc_base = 0x100000, | |
c383b537 | 1824 | .offload_features = NETIF_F_IP_CSUM, |
eb9f6744 | 1825 | .reset_world_flags = ETH_RESET_IRQ, |
8ceee660 BH |
1826 | }; |
1827 | ||
daeda630 | 1828 | struct efx_nic_type falcon_b0_nic_type = { |
ef2b90ee BH |
1829 | .probe = falcon_probe_nic, |
1830 | .remove = falcon_remove_nic, | |
1831 | .init = falcon_init_nic, | |
1832 | .fini = efx_port_dummy_op_void, | |
1833 | .monitor = falcon_monitor, | |
1834 | .reset = falcon_reset_hw, | |
1835 | .probe_port = falcon_probe_port, | |
1836 | .remove_port = falcon_remove_port, | |
1837 | .prepare_flush = falcon_prepare_flush, | |
1838 | .update_stats = falcon_update_nic_stats, | |
1839 | .start_stats = falcon_start_nic_stats, | |
1840 | .stop_stats = falcon_stop_nic_stats, | |
06629f07 | 1841 | .set_id_led = falcon_set_id_led, |
ef2b90ee BH |
1842 | .push_irq_moderation = falcon_push_irq_moderation, |
1843 | .push_multicast_hash = falcon_push_multicast_hash, | |
d3245b28 | 1844 | .reconfigure_port = falcon_reconfigure_port, |
89c758fa BH |
1845 | .get_wol = falcon_get_wol, |
1846 | .set_wol = falcon_set_wol, | |
1847 | .resume_wol = efx_port_dummy_op_void, | |
9bfc4bb1 | 1848 | .test_registers = falcon_b0_test_registers, |
0aa3fbaa | 1849 | .test_nvram = falcon_test_nvram, |
b895d73e SH |
1850 | .default_mac_ops = &falcon_xmac_operations, |
1851 | ||
daeda630 | 1852 | .revision = EFX_REV_FALCON_B0, |
8ceee660 BH |
1853 | /* Map everything up to and including the RSS indirection |
1854 | * table. Don't map MSI-X table, MSI-X PBA since Linux | |
1855 | * requires that they not be mapped. */ | |
3e6c4538 BH |
1856 | .mem_map_size = (FR_BZ_RX_INDIRECTION_TBL + |
1857 | FR_BZ_RX_INDIRECTION_TBL_STEP * | |
1858 | FR_BZ_RX_INDIRECTION_TBL_ROWS), | |
1859 | .txd_ptr_tbl_base = FR_BZ_TX_DESC_PTR_TBL, | |
1860 | .rxd_ptr_tbl_base = FR_BZ_RX_DESC_PTR_TBL, | |
1861 | .buf_tbl_base = FR_BZ_BUF_FULL_TBL, | |
1862 | .evq_ptr_tbl_base = FR_BZ_EVQ_PTR_TBL, | |
1863 | .evq_rptr_tbl_base = FR_BZ_EVQ_RPTR, | |
6d51d307 | 1864 | .max_dma_mask = DMA_BIT_MASK(FSF_AZ_TX_KER_BUF_ADDR_WIDTH), |
39c9cf07 | 1865 | .rx_buffer_hash_size = 0x10, |
8ceee660 BH |
1866 | .rx_buffer_padding = 0, |
1867 | .max_interrupt_mode = EFX_INT_MODE_MSIX, | |
1868 | .phys_addr_channels = 32, /* Hardware limit is 64, but the legacy | |
1869 | * interrupt handler only supports 32 | |
1870 | * channels */ | |
0228f5cd BH |
1871 | .tx_dc_base = 0x130000, |
1872 | .rx_dc_base = 0x100000, | |
39c9cf07 | 1873 | .offload_features = NETIF_F_IP_CSUM | NETIF_F_RXHASH, |
eb9f6744 | 1874 | .reset_world_flags = ETH_RESET_IRQ, |
8ceee660 BH |
1875 | }; |
1876 |