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inflate: refactor inflate malloc code
[linux-2.6/verdex.git] / drivers / net / atlx / atl1.c
blobf12e3d12474b0701a5a72baaf0d4213d5f36203d
1 /*
2 * Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved.
3 * Copyright(c) 2006 - 2007 Chris Snook <csnook@redhat.com>
4 * Copyright(c) 2006 - 2008 Jay Cliburn <jcliburn@gmail.com>
5 *
6 * Derived from Intel e1000 driver
7 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the Free
11 * Software Foundation; either version 2 of the License, or (at your option)
12 * any later version.
13 *
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * more details.
18 *
19 * You should have received a copy of the GNU General Public License along with
20 * this program; if not, write to the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 *
23 * The full GNU General Public License is included in this distribution in the
24 * file called COPYING.
25 *
26 * Contact Information:
27 * Xiong Huang <xiong_huang@attansic.com>
28 * Attansic Technology Corp. 3F 147, Xianzheng 9th Road, Zhubei,
29 * Xinzhu 302, TAIWAN, REPUBLIC OF CHINA
30 *
31 * Chris Snook <csnook@redhat.com>
32 * Jay Cliburn <jcliburn@gmail.com>
33 *
34 * This version is adapted from the Attansic reference driver for
35 * inclusion in the Linux kernel. It is currently under heavy development.
36 * A very incomplete list of things that need to be dealt with:
37 *
38 * TODO:
39 * Add more ethtool functions.
40 * Fix abstruse irq enable/disable condition described here:
41 * http://marc.theaimsgroup.com/?l=linux-netdev&m=116398508500553&w=2
42 *
43 * NEEDS TESTING:
44 * VLAN
45 * multicast
46 * promiscuous mode
47 * interrupt coalescing
48 * SMP torture testing
49 */
50
51 #include <asm/atomic.h>
52 #include <asm/byteorder.h>
53
54 #include <linux/compiler.h>
55 #include <linux/crc32.h>
56 #include <linux/delay.h>
57 #include <linux/dma-mapping.h>
58 #include <linux/etherdevice.h>
59 #include <linux/hardirq.h>
60 #include <linux/if_ether.h>
61 #include <linux/if_vlan.h>
62 #include <linux/in.h>
63 #include <linux/interrupt.h>
64 #include <linux/ip.h>
65 #include <linux/irqflags.h>
66 #include <linux/irqreturn.h>
67 #include <linux/jiffies.h>
68 #include <linux/mii.h>
69 #include <linux/module.h>
70 #include <linux/moduleparam.h>
71 #include <linux/net.h>
72 #include <linux/netdevice.h>
73 #include <linux/pci.h>
74 #include <linux/pci_ids.h>
75 #include <linux/pm.h>
76 #include <linux/skbuff.h>
77 #include <linux/slab.h>
78 #include <linux/spinlock.h>
79 #include <linux/string.h>
80 #include <linux/tcp.h>
81 #include <linux/timer.h>
82 #include <linux/types.h>
83 #include <linux/workqueue.h>
84
85 #include <net/checksum.h>
86
87 #include "atl1.h"
88
89 /* Temporary hack for merging atl1 and atl2 */
90 #include "atlx.c"
91
92 /*
93 * This is the only thing that needs to be changed to adjust the
94 * maximum number of ports that the driver can manage.
95 */
96 #define ATL1_MAX_NIC 4
97
98 #define OPTION_UNSET -1
99 #define OPTION_DISABLED 0
100 #define OPTION_ENABLED 1
101
102 #define ATL1_PARAM_INIT { [0 ... ATL1_MAX_NIC] = OPTION_UNSET }
103
104 /*
105 * Interrupt Moderate Timer in units of 2 us
106 *
107 * Valid Range: 10-65535
108 *
109 * Default Value: 100 (200us)
110 */
111 static int __devinitdata int_mod_timer[ATL1_MAX_NIC+1] = ATL1_PARAM_INIT;
112 static int num_int_mod_timer;
113 module_param_array_named(int_mod_timer, int_mod_timer, int,
114 &num_int_mod_timer, 0);
115 MODULE_PARM_DESC(int_mod_timer, "Interrupt moderator timer");
116
117 #define DEFAULT_INT_MOD_CNT 100 /* 200us */
118 #define MAX_INT_MOD_CNT 65000
119 #define MIN_INT_MOD_CNT 50
120
121 struct atl1_option {
122 enum { enable_option, range_option, list_option } type;
123 char *name;
124 char *err;
125 int def;
126 union {
127 struct { /* range_option info */
128 int min;
129 int max;
130 } r;
131 struct { /* list_option info */
132 int nr;
133 struct atl1_opt_list {
134 int i;
135 char *str;
136 } *p;
137 } l;
138 } arg;
139 };
140
141 static int __devinit atl1_validate_option(int *value, struct atl1_option *opt,
142 struct pci_dev *pdev)
143 {
144 if (*value == OPTION_UNSET) {
145 *value = opt->def;
146 return 0;
147 }
148
149 switch (opt->type) {
150 case enable_option:
151 switch (*value) {
152 case OPTION_ENABLED:
153 dev_info(&pdev->dev, "%s enabled\n", opt->name);
154 return 0;
155 case OPTION_DISABLED:
156 dev_info(&pdev->dev, "%s disabled\n", opt->name);
157 return 0;
158 }
159 break;
160 case range_option:
161 if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
162 dev_info(&pdev->dev, "%s set to %i\n", opt->name,
163 *value);
164 return 0;
165 }
166 break;
167 case list_option:{
168 int i;
169 struct atl1_opt_list *ent;
170
171 for (i = 0; i < opt->arg.l.nr; i++) {
172 ent = &opt->arg.l.p[i];
173 if (*value == ent->i) {
174 if (ent->str[0] != '\0')
175 dev_info(&pdev->dev, "%s\n",
176 ent->str);
177 return 0;
178 }
179 }
180 }
181 break;
182
183 default:
184 break;
185 }
186
187 dev_info(&pdev->dev, "invalid %s specified (%i) %s\n",
188 opt->name, *value, opt->err);
189 *value = opt->def;
190 return -1;
191 }
192
193 /*
194 * atl1_check_options - Range Checking for Command Line Parameters
195 * @adapter: board private structure
196 *
197 * This routine checks all command line parameters for valid user
198 * input. If an invalid value is given, or if no user specified
199 * value exists, a default value is used. The final value is stored
200 * in a variable in the adapter structure.
201 */
202 void __devinit atl1_check_options(struct atl1_adapter *adapter)
203 {
204 struct pci_dev *pdev = adapter->pdev;
205 int bd = adapter->bd_number;
206 if (bd >= ATL1_MAX_NIC) {
207 dev_notice(&pdev->dev, "no configuration for board#%i\n", bd);
208 dev_notice(&pdev->dev, "using defaults for all values\n");
209 }
210 { /* Interrupt Moderate Timer */
211 struct atl1_option opt = {
212 .type = range_option,
213 .name = "Interrupt Moderator Timer",
214 .err = "using default of "
215 __MODULE_STRING(DEFAULT_INT_MOD_CNT),
216 .def = DEFAULT_INT_MOD_CNT,
217 .arg = {.r = {.min = MIN_INT_MOD_CNT,
218 .max = MAX_INT_MOD_CNT} }
219 };
220 int val;
221 if (num_int_mod_timer > bd) {
222 val = int_mod_timer[bd];
223 atl1_validate_option(&val, &opt, pdev);
224 adapter->imt = (u16) val;
225 } else
226 adapter->imt = (u16) (opt.def);
227 }
228 }
229
230 /*
231 * atl1_pci_tbl - PCI Device ID Table
232 */
233 static const struct pci_device_id atl1_pci_tbl[] = {
234 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1)},
235 /* required last entry */
236 {0,}
237 };
238 MODULE_DEVICE_TABLE(pci, atl1_pci_tbl);
239
240 static const u32 atl1_default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE |
241 NETIF_MSG_LINK | NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP;
242
243 static int debug = -1;
244 module_param(debug, int, 0);
245 MODULE_PARM_DESC(debug, "Message level (0=none,...,16=all)");
246
247 /*
248 * Reset the transmit and receive units; mask and clear all interrupts.
249 * hw - Struct containing variables accessed by shared code
250 * return : 0 or idle status (if error)
251 */
252 static s32 atl1_reset_hw(struct atl1_hw *hw)
253 {
254 struct pci_dev *pdev = hw->back->pdev;
255 struct atl1_adapter *adapter = hw->back;
256 u32 icr;
257 int i;
258
259 /*
260 * Clear Interrupt mask to stop board from generating
261 * interrupts & Clear any pending interrupt events
262 */
263 /*
264 * iowrite32(0, hw->hw_addr + REG_IMR);
265 * iowrite32(0xffffffff, hw->hw_addr + REG_ISR);
266 */
267
268 /*
269 * Issue Soft Reset to the MAC. This will reset the chip's
270 * transmit, receive, DMA. It will not effect
271 * the current PCI configuration. The global reset bit is self-
272 * clearing, and should clear within a microsecond.
273 */
274 iowrite32(MASTER_CTRL_SOFT_RST, hw->hw_addr + REG_MASTER_CTRL);
275 ioread32(hw->hw_addr + REG_MASTER_CTRL);
276
277 iowrite16(1, hw->hw_addr + REG_PHY_ENABLE);
278 ioread16(hw->hw_addr + REG_PHY_ENABLE);
279
280 /* delay about 1ms */
281 msleep(1);
282
283 /* Wait at least 10ms for All module to be Idle */
284 for (i = 0; i < 10; i++) {
285 icr = ioread32(hw->hw_addr + REG_IDLE_STATUS);
286 if (!icr)
287 break;
288 /* delay 1 ms */
289 msleep(1);
290 /* FIXME: still the right way to do this? */
291 cpu_relax();
292 }
293
294 if (icr) {
295 if (netif_msg_hw(adapter))
296 dev_dbg(&pdev->dev, "ICR = 0x%x\n", icr);
297 return icr;
298 }
299
300 return 0;
301 }
302
303 /* function about EEPROM
304 *
305 * check_eeprom_exist
306 * return 0 if eeprom exist
307 */
308 static int atl1_check_eeprom_exist(struct atl1_hw *hw)
309 {
310 u32 value;
311 value = ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL);
312 if (value & SPI_FLASH_CTRL_EN_VPD) {
313 value &= ~SPI_FLASH_CTRL_EN_VPD;
314 iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL);
315 }
316
317 value = ioread16(hw->hw_addr + REG_PCIE_CAP_LIST);
318 return ((value & 0xFF00) == 0x6C00) ? 0 : 1;
319 }
320
321 static bool atl1_read_eeprom(struct atl1_hw *hw, u32 offset, u32 *p_value)
322 {
323 int i;
324 u32 control;
325
326 if (offset & 3)
327 /* address do not align */
328 return false;
329
330 iowrite32(0, hw->hw_addr + REG_VPD_DATA);
331 control = (offset & VPD_CAP_VPD_ADDR_MASK) << VPD_CAP_VPD_ADDR_SHIFT;
332 iowrite32(control, hw->hw_addr + REG_VPD_CAP);
333 ioread32(hw->hw_addr + REG_VPD_CAP);
334
335 for (i = 0; i < 10; i++) {
336 msleep(2);
337 control = ioread32(hw->hw_addr + REG_VPD_CAP);
338 if (control & VPD_CAP_VPD_FLAG)
339 break;
340 }
341 if (control & VPD_CAP_VPD_FLAG) {
342 *p_value = ioread32(hw->hw_addr + REG_VPD_DATA);
343 return true;
344 }
345 /* timeout */
346 return false;
347 }
348
349 /*
350 * Reads the value from a PHY register
351 * hw - Struct containing variables accessed by shared code
352 * reg_addr - address of the PHY register to read
353 */
354 s32 atl1_read_phy_reg(struct atl1_hw *hw, u16 reg_addr, u16 *phy_data)
355 {
356 u32 val;
357 int i;
358
359 val = ((u32) (reg_addr & MDIO_REG_ADDR_MASK)) << MDIO_REG_ADDR_SHIFT |
360 MDIO_START | MDIO_SUP_PREAMBLE | MDIO_RW | MDIO_CLK_25_4 <<
361 MDIO_CLK_SEL_SHIFT;
362 iowrite32(val, hw->hw_addr + REG_MDIO_CTRL);
363 ioread32(hw->hw_addr + REG_MDIO_CTRL);
364
365 for (i = 0; i < MDIO_WAIT_TIMES; i++) {
366 udelay(2);
367 val = ioread32(hw->hw_addr + REG_MDIO_CTRL);
368 if (!(val & (MDIO_START | MDIO_BUSY)))
369 break;
370 }
371 if (!(val & (MDIO_START | MDIO_BUSY))) {
372 *phy_data = (u16) val;
373 return 0;
374 }
375 return ATLX_ERR_PHY;
376 }
377
378 #define CUSTOM_SPI_CS_SETUP 2
379 #define CUSTOM_SPI_CLK_HI 2
380 #define CUSTOM_SPI_CLK_LO 2
381 #define CUSTOM_SPI_CS_HOLD 2
382 #define CUSTOM_SPI_CS_HI 3
383
384 static bool atl1_spi_read(struct atl1_hw *hw, u32 addr, u32 *buf)
385 {
386 int i;
387 u32 value;
388
389 iowrite32(0, hw->hw_addr + REG_SPI_DATA);
390 iowrite32(addr, hw->hw_addr + REG_SPI_ADDR);
391
392 value = SPI_FLASH_CTRL_WAIT_READY |
393 (CUSTOM_SPI_CS_SETUP & SPI_FLASH_CTRL_CS_SETUP_MASK) <<
394 SPI_FLASH_CTRL_CS_SETUP_SHIFT | (CUSTOM_SPI_CLK_HI &
395 SPI_FLASH_CTRL_CLK_HI_MASK) <<
396 SPI_FLASH_CTRL_CLK_HI_SHIFT | (CUSTOM_SPI_CLK_LO &
397 SPI_FLASH_CTRL_CLK_LO_MASK) <<
398 SPI_FLASH_CTRL_CLK_LO_SHIFT | (CUSTOM_SPI_CS_HOLD &
399 SPI_FLASH_CTRL_CS_HOLD_MASK) <<
400 SPI_FLASH_CTRL_CS_HOLD_SHIFT | (CUSTOM_SPI_CS_HI &
401 SPI_FLASH_CTRL_CS_HI_MASK) <<
402 SPI_FLASH_CTRL_CS_HI_SHIFT | (1 & SPI_FLASH_CTRL_INS_MASK) <<
403 SPI_FLASH_CTRL_INS_SHIFT;
404
405 iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL);
406
407 value |= SPI_FLASH_CTRL_START;
408 iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL);
409 ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL);
410
411 for (i = 0; i < 10; i++) {
412 msleep(1);
413 value = ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL);
414 if (!(value & SPI_FLASH_CTRL_START))
415 break;
416 }
417
418 if (value & SPI_FLASH_CTRL_START)
419 return false;
420
421 *buf = ioread32(hw->hw_addr + REG_SPI_DATA);
422
423 return true;
424 }
425
426 /*
427 * get_permanent_address
428 * return 0 if get valid mac address,
429 */
430 static int atl1_get_permanent_address(struct atl1_hw *hw)
431 {
432 u32 addr[2];
433 u32 i, control;
434 u16 reg;
435 u8 eth_addr[ETH_ALEN];
436 bool key_valid;
437
438 if (is_valid_ether_addr(hw->perm_mac_addr))
439 return 0;
440
441 /* init */
442 addr[0] = addr[1] = 0;
443
444 if (!atl1_check_eeprom_exist(hw)) {
445 reg = 0;
446 key_valid = false;
447 /* Read out all EEPROM content */
448 i = 0;
449 while (1) {
450 if (atl1_read_eeprom(hw, i + 0x100, &control)) {
451 if (key_valid) {
452 if (reg == REG_MAC_STA_ADDR)
453 addr[0] = control;
454 else if (reg == (REG_MAC_STA_ADDR + 4))
455 addr[1] = control;
456 key_valid = false;
457 } else if ((control & 0xff) == 0x5A) {
458 key_valid = true;
459 reg = (u16) (control >> 16);
460 } else
461 break;
462 } else
463 /* read error */
464 break;
465 i += 4;
466 }
467
468 *(u32 *) &eth_addr[2] = swab32(addr[0]);
469 *(u16 *) &eth_addr[0] = swab16(*(u16 *) &addr[1]);
470 if (is_valid_ether_addr(eth_addr)) {
471 memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
472 return 0;
473 }
474 }
475
476 /* see if SPI FLAGS exist ? */
477 addr[0] = addr[1] = 0;
478 reg = 0;
479 key_valid = false;
480 i = 0;
481 while (1) {
482 if (atl1_spi_read(hw, i + 0x1f000, &control)) {
483 if (key_valid) {
484 if (reg == REG_MAC_STA_ADDR)
485 addr[0] = control;
486 else if (reg == (REG_MAC_STA_ADDR + 4))
487 addr[1] = control;
488 key_valid = false;
489 } else if ((control & 0xff) == 0x5A) {
490 key_valid = true;
491 reg = (u16) (control >> 16);
492 } else
493 /* data end */
494 break;
495 } else
496 /* read error */
497 break;
498 i += 4;
499 }
500
501 *(u32 *) &eth_addr[2] = swab32(addr[0]);
502 *(u16 *) &eth_addr[0] = swab16(*(u16 *) &addr[1]);
503 if (is_valid_ether_addr(eth_addr)) {
504 memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
505 return 0;
506 }
507
508 /*
509 * On some motherboards, the MAC address is written by the
510 * BIOS directly to the MAC register during POST, and is
511 * not stored in eeprom. If all else thus far has failed
512 * to fetch the permanent MAC address, try reading it directly.
513 */
514 addr[0] = ioread32(hw->hw_addr + REG_MAC_STA_ADDR);
515 addr[1] = ioread16(hw->hw_addr + (REG_MAC_STA_ADDR + 4));
516 *(u32 *) &eth_addr[2] = swab32(addr[0]);
517 *(u16 *) &eth_addr[0] = swab16(*(u16 *) &addr[1]);
518 if (is_valid_ether_addr(eth_addr)) {
519 memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
520 return 0;
521 }
522
523 return 1;
524 }
525
526 /*
527 * Reads the adapter's MAC address from the EEPROM
528 * hw - Struct containing variables accessed by shared code
529 */
530 s32 atl1_read_mac_addr(struct atl1_hw *hw)
531 {
532 u16 i;
533
534 if (atl1_get_permanent_address(hw))
535 random_ether_addr(hw->perm_mac_addr);
536
537 for (i = 0; i < ETH_ALEN; i++)
538 hw->mac_addr[i] = hw->perm_mac_addr[i];
539 return 0;
540 }
541
542 /*
543 * Hashes an address to determine its location in the multicast table
544 * hw - Struct containing variables accessed by shared code
545 * mc_addr - the multicast address to hash
546 *
547 * atl1_hash_mc_addr
548 * purpose
549 * set hash value for a multicast address
550 * hash calcu processing :
551 * 1. calcu 32bit CRC for multicast address
552 * 2. reverse crc with MSB to LSB
553 */
554 u32 atl1_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr)
555 {
556 u32 crc32, value = 0;
557 int i;
558
559 crc32 = ether_crc_le(6, mc_addr);
560 for (i = 0; i < 32; i++)
561 value |= (((crc32 >> i) & 1) << (31 - i));
562
563 return value;
564 }
565
566 /*
567 * Sets the bit in the multicast table corresponding to the hash value.
568 * hw - Struct containing variables accessed by shared code
569 * hash_value - Multicast address hash value
570 */
571 void atl1_hash_set(struct atl1_hw *hw, u32 hash_value)
572 {
573 u32 hash_bit, hash_reg;
574 u32 mta;
575
576 /*
577 * The HASH Table is a register array of 2 32-bit registers.
578 * It is treated like an array of 64 bits. We want to set
579 * bit BitArray[hash_value]. So we figure out what register
580 * the bit is in, read it, OR in the new bit, then write
581 * back the new value. The register is determined by the
582 * upper 7 bits of the hash value and the bit within that
583 * register are determined by the lower 5 bits of the value.
584 */
585 hash_reg = (hash_value >> 31) & 0x1;
586 hash_bit = (hash_value >> 26) & 0x1F;
587 mta = ioread32((hw->hw_addr + REG_RX_HASH_TABLE) + (hash_reg << 2));
588 mta |= (1 << hash_bit);
589 iowrite32(mta, (hw->hw_addr + REG_RX_HASH_TABLE) + (hash_reg << 2));
590 }
591
592 /*
593 * Writes a value to a PHY register
594 * hw - Struct containing variables accessed by shared code
595 * reg_addr - address of the PHY register to write
596 * data - data to write to the PHY
597 */
598 static s32 atl1_write_phy_reg(struct atl1_hw *hw, u32 reg_addr, u16 phy_data)
599 {
600 int i;
601 u32 val;
602
603 val = ((u32) (phy_data & MDIO_DATA_MASK)) << MDIO_DATA_SHIFT |
604 (reg_addr & MDIO_REG_ADDR_MASK) << MDIO_REG_ADDR_SHIFT |
605 MDIO_SUP_PREAMBLE |
606 MDIO_START | MDIO_CLK_25_4 << MDIO_CLK_SEL_SHIFT;
607 iowrite32(val, hw->hw_addr + REG_MDIO_CTRL);
608 ioread32(hw->hw_addr + REG_MDIO_CTRL);
609
610 for (i = 0; i < MDIO_WAIT_TIMES; i++) {
611 udelay(2);
612 val = ioread32(hw->hw_addr + REG_MDIO_CTRL);
613 if (!(val & (MDIO_START | MDIO_BUSY)))
614 break;
615 }
616
617 if (!(val & (MDIO_START | MDIO_BUSY)))
618 return 0;
619
620 return ATLX_ERR_PHY;
621 }
622
623 /*
624 * Make L001's PHY out of Power Saving State (bug)
625 * hw - Struct containing variables accessed by shared code
626 * when power on, L001's PHY always on Power saving State
627 * (Gigabit Link forbidden)
628 */
629 static s32 atl1_phy_leave_power_saving(struct atl1_hw *hw)
630 {
631 s32 ret;
632 ret = atl1_write_phy_reg(hw, 29, 0x0029);
633 if (ret)
634 return ret;
635 return atl1_write_phy_reg(hw, 30, 0);
636 }
637
638 /*
639 * Resets the PHY and make all config validate
640 * hw - Struct containing variables accessed by shared code
641 *
642 * Sets bit 15 and 12 of the MII Control regiser (for F001 bug)
643 */
644 static s32 atl1_phy_reset(struct atl1_hw *hw)
645 {
646 struct pci_dev *pdev = hw->back->pdev;
647 struct atl1_adapter *adapter = hw->back;
648 s32 ret_val;
649 u16 phy_data;
650
651 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
652 hw->media_type == MEDIA_TYPE_1000M_FULL)
653 phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
654 else {
655 switch (hw->media_type) {
656 case MEDIA_TYPE_100M_FULL:
657 phy_data =
658 MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
659 MII_CR_RESET;
660 break;
661 case MEDIA_TYPE_100M_HALF:
662 phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
663 break;
664 case MEDIA_TYPE_10M_FULL:
665 phy_data =
666 MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
667 break;
668 default:
669 /* MEDIA_TYPE_10M_HALF: */
670 phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
671 break;
672 }
673 }
674
675 ret_val = atl1_write_phy_reg(hw, MII_BMCR, phy_data);
676 if (ret_val) {
677 u32 val;
678 int i;
679 /* pcie serdes link may be down! */
680 if (netif_msg_hw(adapter))
681 dev_dbg(&pdev->dev, "pcie phy link down\n");
682
683 for (i = 0; i < 25; i++) {
684 msleep(1);
685 val = ioread32(hw->hw_addr + REG_MDIO_CTRL);
686 if (!(val & (MDIO_START | MDIO_BUSY)))
687 break;
688 }
689
690 if ((val & (MDIO_START | MDIO_BUSY)) != 0) {
691 if (netif_msg_hw(adapter))
692 dev_warn(&pdev->dev,
693 "pcie link down at least 25ms\n");
694 return ret_val;
695 }
696 }
697 return 0;
698 }
699
700 /*
701 * Configures PHY autoneg and flow control advertisement settings
702 * hw - Struct containing variables accessed by shared code
703 */
704 static s32 atl1_phy_setup_autoneg_adv(struct atl1_hw *hw)
705 {
706 s32 ret_val;
707 s16 mii_autoneg_adv_reg;
708 s16 mii_1000t_ctrl_reg;
709
710 /* Read the MII Auto-Neg Advertisement Register (Address 4). */
711 mii_autoneg_adv_reg = MII_AR_DEFAULT_CAP_MASK;
712
713 /* Read the MII 1000Base-T Control Register (Address 9). */
714 mii_1000t_ctrl_reg = MII_ATLX_CR_1000T_DEFAULT_CAP_MASK;
715
716 /*
717 * First we clear all the 10/100 mb speed bits in the Auto-Neg
718 * Advertisement Register (Address 4) and the 1000 mb speed bits in
719 * the 1000Base-T Control Register (Address 9).
720 */
721 mii_autoneg_adv_reg &= ~MII_AR_SPEED_MASK;
722 mii_1000t_ctrl_reg &= ~MII_ATLX_CR_1000T_SPEED_MASK;
723
724 /*
725 * Need to parse media_type and set up
726 * the appropriate PHY registers.
727 */
728 switch (hw->media_type) {
729 case MEDIA_TYPE_AUTO_SENSOR:
730 mii_autoneg_adv_reg |= (MII_AR_10T_HD_CAPS |
731 MII_AR_10T_FD_CAPS |
732 MII_AR_100TX_HD_CAPS |
733 MII_AR_100TX_FD_CAPS);
734 mii_1000t_ctrl_reg |= MII_ATLX_CR_1000T_FD_CAPS;
735 break;
736
737 case MEDIA_TYPE_1000M_FULL:
738 mii_1000t_ctrl_reg |= MII_ATLX_CR_1000T_FD_CAPS;
739 break;
740
741 case MEDIA_TYPE_100M_FULL:
742 mii_autoneg_adv_reg |= MII_AR_100TX_FD_CAPS;
743 break;
744
745 case MEDIA_TYPE_100M_HALF:
746 mii_autoneg_adv_reg |= MII_AR_100TX_HD_CAPS;
747 break;
748
749 case MEDIA_TYPE_10M_FULL:
750 mii_autoneg_adv_reg |= MII_AR_10T_FD_CAPS;
751 break;
752
753 default:
754 mii_autoneg_adv_reg |= MII_AR_10T_HD_CAPS;
755 break;
756 }
757
758 /* flow control fixed to enable all */
759 mii_autoneg_adv_reg |= (MII_AR_ASM_DIR | MII_AR_PAUSE);
760
761 hw->mii_autoneg_adv_reg = mii_autoneg_adv_reg;
762 hw->mii_1000t_ctrl_reg = mii_1000t_ctrl_reg;
763
764 ret_val = atl1_write_phy_reg(hw, MII_ADVERTISE, mii_autoneg_adv_reg);
765 if (ret_val)
766 return ret_val;
767
768 ret_val = atl1_write_phy_reg(hw, MII_ATLX_CR, mii_1000t_ctrl_reg);
769 if (ret_val)
770 return ret_val;
771
772 return 0;
773 }
774
775 /*
776 * Configures link settings.
777 * hw - Struct containing variables accessed by shared code
778 * Assumes the hardware has previously been reset and the
779 * transmitter and receiver are not enabled.
780 */
781 static s32 atl1_setup_link(struct atl1_hw *hw)
782 {
783 struct pci_dev *pdev = hw->back->pdev;
784 struct atl1_adapter *adapter = hw->back;
785 s32 ret_val;
786
787 /*
788 * Options:
789 * PHY will advertise value(s) parsed from
790 * autoneg_advertised and fc
791 * no matter what autoneg is , We will not wait link result.
792 */
793 ret_val = atl1_phy_setup_autoneg_adv(hw);
794 if (ret_val) {
795 if (netif_msg_link(adapter))
796 dev_dbg(&pdev->dev,
797 "error setting up autonegotiation\n");
798 return ret_val;
799 }
800 /* SW.Reset , En-Auto-Neg if needed */
801 ret_val = atl1_phy_reset(hw);
802 if (ret_val) {
803 if (netif_msg_link(adapter))
804 dev_dbg(&pdev->dev, "error resetting phy\n");
805 return ret_val;
806 }
807 hw->phy_configured = true;
808 return ret_val;
809 }
810
811 static void atl1_init_flash_opcode(struct atl1_hw *hw)
812 {
813 if (hw->flash_vendor >= ARRAY_SIZE(flash_table))
814 /* Atmel */
815 hw->flash_vendor = 0;
816
817 /* Init OP table */
818 iowrite8(flash_table[hw->flash_vendor].cmd_program,
819 hw->hw_addr + REG_SPI_FLASH_OP_PROGRAM);
820 iowrite8(flash_table[hw->flash_vendor].cmd_sector_erase,
821 hw->hw_addr + REG_SPI_FLASH_OP_SC_ERASE);
822 iowrite8(flash_table[hw->flash_vendor].cmd_chip_erase,
823 hw->hw_addr + REG_SPI_FLASH_OP_CHIP_ERASE);
824 iowrite8(flash_table[hw->flash_vendor].cmd_rdid,
825 hw->hw_addr + REG_SPI_FLASH_OP_RDID);
826 iowrite8(flash_table[hw->flash_vendor].cmd_wren,
827 hw->hw_addr + REG_SPI_FLASH_OP_WREN);
828 iowrite8(flash_table[hw->flash_vendor].cmd_rdsr,
829 hw->hw_addr + REG_SPI_FLASH_OP_RDSR);
830 iowrite8(flash_table[hw->flash_vendor].cmd_wrsr,
831 hw->hw_addr + REG_SPI_FLASH_OP_WRSR);
832 iowrite8(flash_table[hw->flash_vendor].cmd_read,
833 hw->hw_addr + REG_SPI_FLASH_OP_READ);
834 }
835
836 /*
837 * Performs basic configuration of the adapter.
838 * hw - Struct containing variables accessed by shared code
839 * Assumes that the controller has previously been reset and is in a
840 * post-reset uninitialized state. Initializes multicast table,
841 * and Calls routines to setup link
842 * Leaves the transmit and receive units disabled and uninitialized.
843 */
844 static s32 atl1_init_hw(struct atl1_hw *hw)
845 {
846 u32 ret_val = 0;
847
848 /* Zero out the Multicast HASH table */
849 iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE);
850 /* clear the old settings from the multicast hash table */
851 iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2));
852
853 atl1_init_flash_opcode(hw);
854
855 if (!hw->phy_configured) {
856 /* enable GPHY LinkChange Interrrupt */
857 ret_val = atl1_write_phy_reg(hw, 18, 0xC00);
858 if (ret_val)
859 return ret_val;
860 /* make PHY out of power-saving state */
861 ret_val = atl1_phy_leave_power_saving(hw);
862 if (ret_val)
863 return ret_val;
864 /* Call a subroutine to configure the link */
865 ret_val = atl1_setup_link(hw);
866 }
867 return ret_val;
868 }
869
870 /*
871 * Detects the current speed and duplex settings of the hardware.
872 * hw - Struct containing variables accessed by shared code
873 * speed - Speed of the connection
874 * duplex - Duplex setting of the connection
875 */
876 static s32 atl1_get_speed_and_duplex(struct atl1_hw *hw, u16 *speed, u16 *duplex)
877 {
878 struct pci_dev *pdev = hw->back->pdev;
879 struct atl1_adapter *adapter = hw->back;
880 s32 ret_val;
881 u16 phy_data;
882
883 /* ; --- Read PHY Specific Status Register (17) */
884 ret_val = atl1_read_phy_reg(hw, MII_ATLX_PSSR, &phy_data);
885 if (ret_val)
886 return ret_val;
887
888 if (!(phy_data & MII_ATLX_PSSR_SPD_DPLX_RESOLVED))
889 return ATLX_ERR_PHY_RES;
890
891 switch (phy_data & MII_ATLX_PSSR_SPEED) {
892 case MII_ATLX_PSSR_1000MBS:
893 *speed = SPEED_1000;
894 break;
895 case MII_ATLX_PSSR_100MBS:
896 *speed = SPEED_100;
897 break;
898 case MII_ATLX_PSSR_10MBS:
899 *speed = SPEED_10;
900 break;
901 default:
902 if (netif_msg_hw(adapter))
903 dev_dbg(&pdev->dev, "error getting speed\n");
904 return ATLX_ERR_PHY_SPEED;
905 break;
906 }
907 if (phy_data & MII_ATLX_PSSR_DPLX)
908 *duplex = FULL_DUPLEX;
909 else
910 *duplex = HALF_DUPLEX;
911
912 return 0;
913 }
914
915 void atl1_set_mac_addr(struct atl1_hw *hw)
916 {
917 u32 value;
918 /*
919 * 00-0B-6A-F6-00-DC
920 * 0: 6AF600DC 1: 000B
921 * low dword
922 */
923 value = (((u32) hw->mac_addr[2]) << 24) |
924 (((u32) hw->mac_addr[3]) << 16) |
925 (((u32) hw->mac_addr[4]) << 8) | (((u32) hw->mac_addr[5]));
926 iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR);
927 /* high dword */
928 value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1]));
929 iowrite32(value, (hw->hw_addr + REG_MAC_STA_ADDR) + (1 << 2));
930 }
931
932 /*
933 * atl1_sw_init - Initialize general software structures (struct atl1_adapter)
934 * @adapter: board private structure to initialize
935 *
936 * atl1_sw_init initializes the Adapter private data structure.
937 * Fields are initialized based on PCI device information and
938 * OS network device settings (MTU size).
939 */
940 static int __devinit atl1_sw_init(struct atl1_adapter *adapter)
941 {
942 struct atl1_hw *hw = &adapter->hw;
943 struct net_device *netdev = adapter->netdev;
944
945 hw->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
946 hw->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
947
948 adapter->wol = 0;
949 adapter->rx_buffer_len = (hw->max_frame_size + 7) & ~7;
950 adapter->ict = 50000; /* 100ms */
951 adapter->link_speed = SPEED_0; /* hardware init */
952 adapter->link_duplex = FULL_DUPLEX;
953
954 hw->phy_configured = false;
955 hw->preamble_len = 7;
956 hw->ipgt = 0x60;
957 hw->min_ifg = 0x50;
958 hw->ipgr1 = 0x40;
959 hw->ipgr2 = 0x60;
960 hw->max_retry = 0xf;
961 hw->lcol = 0x37;
962 hw->jam_ipg = 7;
963 hw->rfd_burst = 8;
964 hw->rrd_burst = 8;
965 hw->rfd_fetch_gap = 1;
966 hw->rx_jumbo_th = adapter->rx_buffer_len / 8;
967 hw->rx_jumbo_lkah = 1;
968 hw->rrd_ret_timer = 16;
969 hw->tpd_burst = 4;
970 hw->tpd_fetch_th = 16;
971 hw->txf_burst = 0x100;
972 hw->tx_jumbo_task_th = (hw->max_frame_size + 7) >> 3;
973 hw->tpd_fetch_gap = 1;
974 hw->rcb_value = atl1_rcb_64;
975 hw->dma_ord = atl1_dma_ord_enh;
976 hw->dmar_block = atl1_dma_req_256;
977 hw->dmaw_block = atl1_dma_req_256;
978 hw->cmb_rrd = 4;
979 hw->cmb_tpd = 4;
980 hw->cmb_rx_timer = 1; /* about 2us */
981 hw->cmb_tx_timer = 1; /* about 2us */
982 hw->smb_timer = 100000; /* about 200ms */
983
984 spin_lock_init(&adapter->lock);
985 spin_lock_init(&adapter->mb_lock);
986
987 return 0;
988 }
989
990 static int mdio_read(struct net_device *netdev, int phy_id, int reg_num)
991 {
992 struct atl1_adapter *adapter = netdev_priv(netdev);
993 u16 result;
994
995 atl1_read_phy_reg(&adapter->hw, reg_num & 0x1f, &result);
996
997 return result;
998 }
999
1000 static void mdio_write(struct net_device *netdev, int phy_id, int reg_num,
1001 int val)
1002 {
1003 struct atl1_adapter *adapter = netdev_priv(netdev);
1004
1005 atl1_write_phy_reg(&adapter->hw, reg_num, val);
1006 }
1007
1008 /*
1009 * atl1_mii_ioctl -
1010 * @netdev:
1011 * @ifreq:
1012 * @cmd:
1013 */
1014 static int atl1_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1015 {
1016 struct atl1_adapter *adapter = netdev_priv(netdev);
1017 unsigned long flags;
1018 int retval;
1019
1020 if (!netif_running(netdev))
1021 return -EINVAL;
1022
1023 spin_lock_irqsave(&adapter->lock, flags);
1024 retval = generic_mii_ioctl(&adapter->mii, if_mii(ifr), cmd, NULL);
1025 spin_unlock_irqrestore(&adapter->lock, flags);
1026
1027 return retval;
1028 }
1029
1030 /*
1031 * atl1_setup_mem_resources - allocate Tx / RX descriptor resources
1032 * @adapter: board private structure
1033 *
1034 * Return 0 on success, negative on failure
1035 */
1036 static s32 atl1_setup_ring_resources(struct atl1_adapter *adapter)
1037 {
1038 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1039 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1040 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1041 struct atl1_ring_header *ring_header = &adapter->ring_header;
1042 struct pci_dev *pdev = adapter->pdev;
1043 int size;
1044 u8 offset = 0;
1045
1046 size = sizeof(struct atl1_buffer) * (tpd_ring->count + rfd_ring->count);
1047 tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL);
1048 if (unlikely(!tpd_ring->buffer_info)) {
1049 if (netif_msg_drv(adapter))
1050 dev_err(&pdev->dev, "kzalloc failed , size = D%d\n",
1051 size);
1052 goto err_nomem;
1053 }
1054 rfd_ring->buffer_info =
1055 (struct atl1_buffer *)(tpd_ring->buffer_info + tpd_ring->count);
1056
1057 /*
1058 * real ring DMA buffer
1059 * each ring/block may need up to 8 bytes for alignment, hence the
1060 * additional 40 bytes tacked onto the end.
1061 */
1062 ring_header->size = size =
1063 sizeof(struct tx_packet_desc) * tpd_ring->count
1064 + sizeof(struct rx_free_desc) * rfd_ring->count
1065 + sizeof(struct rx_return_desc) * rrd_ring->count
1066 + sizeof(struct coals_msg_block)
1067 + sizeof(struct stats_msg_block)
1068 + 40;
1069
1070 ring_header->desc = pci_alloc_consistent(pdev, ring_header->size,
1071 &ring_header->dma);
1072 if (unlikely(!ring_header->desc)) {
1073 if (netif_msg_drv(adapter))
1074 dev_err(&pdev->dev, "pci_alloc_consistent failed\n");
1075 goto err_nomem;
1076 }
1077
1078 memset(ring_header->desc, 0, ring_header->size);
1079
1080 /* init TPD ring */
1081 tpd_ring->dma = ring_header->dma;
1082 offset = (tpd_ring->dma & 0x7) ? (8 - (ring_header->dma & 0x7)) : 0;
1083 tpd_ring->dma += offset;
1084 tpd_ring->desc = (u8 *) ring_header->desc + offset;
1085 tpd_ring->size = sizeof(struct tx_packet_desc) * tpd_ring->count;
1086
1087 /* init RFD ring */
1088 rfd_ring->dma = tpd_ring->dma + tpd_ring->size;
1089 offset = (rfd_ring->dma & 0x7) ? (8 - (rfd_ring->dma & 0x7)) : 0;
1090 rfd_ring->dma += offset;
1091 rfd_ring->desc = (u8 *) tpd_ring->desc + (tpd_ring->size + offset);
1092 rfd_ring->size = sizeof(struct rx_free_desc) * rfd_ring->count;
1093
1094
1095 /* init RRD ring */
1096 rrd_ring->dma = rfd_ring->dma + rfd_ring->size;
1097 offset = (rrd_ring->dma & 0x7) ? (8 - (rrd_ring->dma & 0x7)) : 0;
1098 rrd_ring->dma += offset;
1099 rrd_ring->desc = (u8 *) rfd_ring->desc + (rfd_ring->size + offset);
1100 rrd_ring->size = sizeof(struct rx_return_desc) * rrd_ring->count;
1101
1102
1103 /* init CMB */
1104 adapter->cmb.dma = rrd_ring->dma + rrd_ring->size;
1105 offset = (adapter->cmb.dma & 0x7) ? (8 - (adapter->cmb.dma & 0x7)) : 0;
1106 adapter->cmb.dma += offset;
1107 adapter->cmb.cmb = (struct coals_msg_block *)
1108 ((u8 *) rrd_ring->desc + (rrd_ring->size + offset));
1109
1110 /* init SMB */
1111 adapter->smb.dma = adapter->cmb.dma + sizeof(struct coals_msg_block);
1112 offset = (adapter->smb.dma & 0x7) ? (8 - (adapter->smb.dma & 0x7)) : 0;
1113 adapter->smb.dma += offset;
1114 adapter->smb.smb = (struct stats_msg_block *)
1115 ((u8 *) adapter->cmb.cmb +
1116 (sizeof(struct coals_msg_block) + offset));
1117
1118 return 0;
1119
1120 err_nomem:
1121 kfree(tpd_ring->buffer_info);
1122 return -ENOMEM;
1123 }
1124
1125 static void atl1_init_ring_ptrs(struct atl1_adapter *adapter)
1126 {
1127 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1128 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1129 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1130
1131 atomic_set(&tpd_ring->next_to_use, 0);
1132 atomic_set(&tpd_ring->next_to_clean, 0);
1133
1134 rfd_ring->next_to_clean = 0;
1135 atomic_set(&rfd_ring->next_to_use, 0);
1136
1137 rrd_ring->next_to_use = 0;
1138 atomic_set(&rrd_ring->next_to_clean, 0);
1139 }
1140
1141 /*
1142 * atl1_clean_rx_ring - Free RFD Buffers
1143 * @adapter: board private structure
1144 */
1145 static void atl1_clean_rx_ring(struct atl1_adapter *adapter)
1146 {
1147 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1148 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1149 struct atl1_buffer *buffer_info;
1150 struct pci_dev *pdev = adapter->pdev;
1151 unsigned long size;
1152 unsigned int i;
1153
1154 /* Free all the Rx ring sk_buffs */
1155 for (i = 0; i < rfd_ring->count; i++) {
1156 buffer_info = &rfd_ring->buffer_info[i];
1157 if (buffer_info->dma) {
1158 pci_unmap_page(pdev, buffer_info->dma,
1159 buffer_info->length, PCI_DMA_FROMDEVICE);
1160 buffer_info->dma = 0;
1161 }
1162 if (buffer_info->skb) {
1163 dev_kfree_skb(buffer_info->skb);
1164 buffer_info->skb = NULL;
1165 }
1166 }
1167
1168 size = sizeof(struct atl1_buffer) * rfd_ring->count;
1169 memset(rfd_ring->buffer_info, 0, size);
1170
1171 /* Zero out the descriptor ring */
1172 memset(rfd_ring->desc, 0, rfd_ring->size);
1173
1174 rfd_ring->next_to_clean = 0;
1175 atomic_set(&rfd_ring->next_to_use, 0);
1176
1177 rrd_ring->next_to_use = 0;
1178 atomic_set(&rrd_ring->next_to_clean, 0);
1179 }
1180
1181 /*
1182 * atl1_clean_tx_ring - Free Tx Buffers
1183 * @adapter: board private structure
1184 */
1185 static void atl1_clean_tx_ring(struct atl1_adapter *adapter)
1186 {
1187 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1188 struct atl1_buffer *buffer_info;
1189 struct pci_dev *pdev = adapter->pdev;
1190 unsigned long size;
1191 unsigned int i;
1192
1193 /* Free all the Tx ring sk_buffs */
1194 for (i = 0; i < tpd_ring->count; i++) {
1195 buffer_info = &tpd_ring->buffer_info[i];
1196 if (buffer_info->dma) {
1197 pci_unmap_page(pdev, buffer_info->dma,
1198 buffer_info->length, PCI_DMA_TODEVICE);
1199 buffer_info->dma = 0;
1200 }
1201 }
1202
1203 for (i = 0; i < tpd_ring->count; i++) {
1204 buffer_info = &tpd_ring->buffer_info[i];
1205 if (buffer_info->skb) {
1206 dev_kfree_skb_any(buffer_info->skb);
1207 buffer_info->skb = NULL;
1208 }
1209 }
1210
1211 size = sizeof(struct atl1_buffer) * tpd_ring->count;
1212 memset(tpd_ring->buffer_info, 0, size);
1213
1214 /* Zero out the descriptor ring */
1215 memset(tpd_ring->desc, 0, tpd_ring->size);
1216
1217 atomic_set(&tpd_ring->next_to_use, 0);
1218 atomic_set(&tpd_ring->next_to_clean, 0);
1219 }
1220
1221 /*
1222 * atl1_free_ring_resources - Free Tx / RX descriptor Resources
1223 * @adapter: board private structure
1224 *
1225 * Free all transmit software resources
1226 */
1227 static void atl1_free_ring_resources(struct atl1_adapter *adapter)
1228 {
1229 struct pci_dev *pdev = adapter->pdev;
1230 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1231 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1232 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1233 struct atl1_ring_header *ring_header = &adapter->ring_header;
1234
1235 atl1_clean_tx_ring(adapter);
1236 atl1_clean_rx_ring(adapter);
1237
1238 kfree(tpd_ring->buffer_info);
1239 pci_free_consistent(pdev, ring_header->size, ring_header->desc,
1240 ring_header->dma);
1241
1242 tpd_ring->buffer_info = NULL;
1243 tpd_ring->desc = NULL;
1244 tpd_ring->dma = 0;
1245
1246 rfd_ring->buffer_info = NULL;
1247 rfd_ring->desc = NULL;
1248 rfd_ring->dma = 0;
1249
1250 rrd_ring->desc = NULL;
1251 rrd_ring->dma = 0;
1252 }
1253
1254 static void atl1_setup_mac_ctrl(struct atl1_adapter *adapter)
1255 {
1256 u32 value;
1257 struct atl1_hw *hw = &adapter->hw;
1258 struct net_device *netdev = adapter->netdev;
1259 /* Config MAC CTRL Register */
1260 value = MAC_CTRL_TX_EN | MAC_CTRL_RX_EN;
1261 /* duplex */
1262 if (FULL_DUPLEX == adapter->link_duplex)
1263 value |= MAC_CTRL_DUPLX;
1264 /* speed */
1265 value |= ((u32) ((SPEED_1000 == adapter->link_speed) ?
1266 MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) <<
1267 MAC_CTRL_SPEED_SHIFT);
1268 /* flow control */
1269 value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW);
1270 /* PAD & CRC */
1271 value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD);
1272 /* preamble length */
1273 value |= (((u32) adapter->hw.preamble_len
1274 & MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT);
1275 /* vlan */
1276 if (adapter->vlgrp)
1277 value |= MAC_CTRL_RMV_VLAN;
1278 /* rx checksum
1279 if (adapter->rx_csum)
1280 value |= MAC_CTRL_RX_CHKSUM_EN;
1281 */
1282 /* filter mode */
1283 value |= MAC_CTRL_BC_EN;
1284 if (netdev->flags & IFF_PROMISC)
1285 value |= MAC_CTRL_PROMIS_EN;
1286 else if (netdev->flags & IFF_ALLMULTI)
1287 value |= MAC_CTRL_MC_ALL_EN;
1288 /* value |= MAC_CTRL_LOOPBACK; */
1289 iowrite32(value, hw->hw_addr + REG_MAC_CTRL);
1290 }
1291
1292 static u32 atl1_check_link(struct atl1_adapter *adapter)
1293 {
1294 struct atl1_hw *hw = &adapter->hw;
1295 struct net_device *netdev = adapter->netdev;
1296 u32 ret_val;
1297 u16 speed, duplex, phy_data;
1298 int reconfig = 0;
1299
1300 /* MII_BMSR must read twice */
1301 atl1_read_phy_reg(hw, MII_BMSR, &phy_data);
1302 atl1_read_phy_reg(hw, MII_BMSR, &phy_data);
1303 if (!(phy_data & BMSR_LSTATUS)) {
1304 /* link down */
1305 if (netif_carrier_ok(netdev)) {
1306 /* old link state: Up */
1307 if (netif_msg_link(adapter))
1308 dev_info(&adapter->pdev->dev, "link is down\n");
1309 adapter->link_speed = SPEED_0;
1310 netif_carrier_off(netdev);
1311 }
1312 return 0;
1313 }
1314
1315 /* Link Up */
1316 ret_val = atl1_get_speed_and_duplex(hw, &speed, &duplex);
1317 if (ret_val)
1318 return ret_val;
1319
1320 switch (hw->media_type) {
1321 case MEDIA_TYPE_1000M_FULL:
1322 if (speed != SPEED_1000 || duplex != FULL_DUPLEX)
1323 reconfig = 1;
1324 break;
1325 case MEDIA_TYPE_100M_FULL:
1326 if (speed != SPEED_100 || duplex != FULL_DUPLEX)
1327 reconfig = 1;
1328 break;
1329 case MEDIA_TYPE_100M_HALF:
1330 if (speed != SPEED_100 || duplex != HALF_DUPLEX)
1331 reconfig = 1;
1332 break;
1333 case MEDIA_TYPE_10M_FULL:
1334 if (speed != SPEED_10 || duplex != FULL_DUPLEX)
1335 reconfig = 1;
1336 break;
1337 case MEDIA_TYPE_10M_HALF:
1338 if (speed != SPEED_10 || duplex != HALF_DUPLEX)
1339 reconfig = 1;
1340 break;
1341 }
1342
1343 /* link result is our setting */
1344 if (!reconfig) {
1345 if (adapter->link_speed != speed
1346 || adapter->link_duplex != duplex) {
1347 adapter->link_speed = speed;
1348 adapter->link_duplex = duplex;
1349 atl1_setup_mac_ctrl(adapter);
1350 if (netif_msg_link(adapter))
1351 dev_info(&adapter->pdev->dev,
1352 "%s link is up %d Mbps %s\n",
1353 netdev->name, adapter->link_speed,
1354 adapter->link_duplex == FULL_DUPLEX ?
1355 "full duplex" : "half duplex");
1356 }
1357 if (!netif_carrier_ok(netdev)) {
1358 /* Link down -> Up */
1359 netif_carrier_on(netdev);
1360 }
1361 return 0;
1362 }
1363
1364 /* change original link status */
1365 if (netif_carrier_ok(netdev)) {
1366 adapter->link_speed = SPEED_0;
1367 netif_carrier_off(netdev);
1368 netif_stop_queue(netdev);
1369 }
1370
1371 if (hw->media_type != MEDIA_TYPE_AUTO_SENSOR &&
1372 hw->media_type != MEDIA_TYPE_1000M_FULL) {
1373 switch (hw->media_type) {
1374 case MEDIA_TYPE_100M_FULL:
1375 phy_data = MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
1376 MII_CR_RESET;
1377 break;
1378 case MEDIA_TYPE_100M_HALF:
1379 phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
1380 break;
1381 case MEDIA_TYPE_10M_FULL:
1382 phy_data =
1383 MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
1384 break;
1385 default:
1386 /* MEDIA_TYPE_10M_HALF: */
1387 phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
1388 break;
1389 }
1390 atl1_write_phy_reg(hw, MII_BMCR, phy_data);
1391 return 0;
1392 }
1393
1394 /* auto-neg, insert timer to re-config phy */
1395 if (!adapter->phy_timer_pending) {
1396 adapter->phy_timer_pending = true;
1397 mod_timer(&adapter->phy_config_timer, jiffies + 3 * HZ);
1398 }
1399
1400 return 0;
1401 }
1402
1403 static void set_flow_ctrl_old(struct atl1_adapter *adapter)
1404 {
1405 u32 hi, lo, value;
1406
1407 /* RFD Flow Control */
1408 value = adapter->rfd_ring.count;
1409 hi = value / 16;
1410 if (hi < 2)
1411 hi = 2;
1412 lo = value * 7 / 8;
1413
1414 value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) |
1415 ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT);
1416 iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RXF_PAUSE_THRESH);
1417
1418 /* RRD Flow Control */
1419 value = adapter->rrd_ring.count;
1420 lo = value / 16;
1421 hi = value * 7 / 8;
1422 if (lo < 2)
1423 lo = 2;
1424 value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) |
1425 ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT);
1426 iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RRD_PAUSE_THRESH);
1427 }
1428
1429 static void set_flow_ctrl_new(struct atl1_hw *hw)
1430 {
1431 u32 hi, lo, value;
1432
1433 /* RXF Flow Control */
1434 value = ioread32(hw->hw_addr + REG_SRAM_RXF_LEN);
1435 lo = value / 16;
1436 if (lo < 192)
1437 lo = 192;
1438 hi = value * 7 / 8;
1439 if (hi < lo)
1440 hi = lo + 16;
1441 value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) |
1442 ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT);
1443 iowrite32(value, hw->hw_addr + REG_RXQ_RXF_PAUSE_THRESH);
1444
1445 /* RRD Flow Control */
1446 value = ioread32(hw->hw_addr + REG_SRAM_RRD_LEN);
1447 lo = value / 8;
1448 hi = value * 7 / 8;
1449 if (lo < 2)
1450 lo = 2;
1451 if (hi < lo)
1452 hi = lo + 3;
1453 value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) |
1454 ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT);
1455 iowrite32(value, hw->hw_addr + REG_RXQ_RRD_PAUSE_THRESH);
1456 }
1457
1458 /*
1459 * atl1_configure - Configure Transmit&Receive Unit after Reset
1460 * @adapter: board private structure
1461 *
1462 * Configure the Tx /Rx unit of the MAC after a reset.
1463 */
1464 static u32 atl1_configure(struct atl1_adapter *adapter)
1465 {
1466 struct atl1_hw *hw = &adapter->hw;
1467 u32 value;
1468
1469 /* clear interrupt status */
1470 iowrite32(0xffffffff, adapter->hw.hw_addr + REG_ISR);
1471
1472 /* set MAC Address */
1473 value = (((u32) hw->mac_addr[2]) << 24) |
1474 (((u32) hw->mac_addr[3]) << 16) |
1475 (((u32) hw->mac_addr[4]) << 8) |
1476 (((u32) hw->mac_addr[5]));
1477 iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR);
1478 value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1]));
1479 iowrite32(value, hw->hw_addr + (REG_MAC_STA_ADDR + 4));
1480
1481 /* tx / rx ring */
1482
1483 /* HI base address */
1484 iowrite32((u32) ((adapter->tpd_ring.dma & 0xffffffff00000000ULL) >> 32),
1485 hw->hw_addr + REG_DESC_BASE_ADDR_HI);
1486 /* LO base address */
1487 iowrite32((u32) (adapter->rfd_ring.dma & 0x00000000ffffffffULL),
1488 hw->hw_addr + REG_DESC_RFD_ADDR_LO);
1489 iowrite32((u32) (adapter->rrd_ring.dma & 0x00000000ffffffffULL),
1490 hw->hw_addr + REG_DESC_RRD_ADDR_LO);
1491 iowrite32((u32) (adapter->tpd_ring.dma & 0x00000000ffffffffULL),
1492 hw->hw_addr + REG_DESC_TPD_ADDR_LO);
1493 iowrite32((u32) (adapter->cmb.dma & 0x00000000ffffffffULL),
1494 hw->hw_addr + REG_DESC_CMB_ADDR_LO);
1495 iowrite32((u32) (adapter->smb.dma & 0x00000000ffffffffULL),
1496 hw->hw_addr + REG_DESC_SMB_ADDR_LO);
1497
1498 /* element count */
1499 value = adapter->rrd_ring.count;
1500 value <<= 16;
1501 value += adapter->rfd_ring.count;
1502 iowrite32(value, hw->hw_addr + REG_DESC_RFD_RRD_RING_SIZE);
1503 iowrite32(adapter->tpd_ring.count, hw->hw_addr +
1504 REG_DESC_TPD_RING_SIZE);
1505
1506 /* Load Ptr */
1507 iowrite32(1, hw->hw_addr + REG_LOAD_PTR);
1508
1509 /* config Mailbox */
1510 value = ((atomic_read(&adapter->tpd_ring.next_to_use)
1511 & MB_TPD_PROD_INDX_MASK) << MB_TPD_PROD_INDX_SHIFT) |
1512 ((atomic_read(&adapter->rrd_ring.next_to_clean)
1513 & MB_RRD_CONS_INDX_MASK) << MB_RRD_CONS_INDX_SHIFT) |
1514 ((atomic_read(&adapter->rfd_ring.next_to_use)
1515 & MB_RFD_PROD_INDX_MASK) << MB_RFD_PROD_INDX_SHIFT);
1516 iowrite32(value, hw->hw_addr + REG_MAILBOX);
1517
1518 /* config IPG/IFG */
1519 value = (((u32) hw->ipgt & MAC_IPG_IFG_IPGT_MASK)
1520 << MAC_IPG_IFG_IPGT_SHIFT) |
1521 (((u32) hw->min_ifg & MAC_IPG_IFG_MIFG_MASK)
1522 << MAC_IPG_IFG_MIFG_SHIFT) |
1523 (((u32) hw->ipgr1 & MAC_IPG_IFG_IPGR1_MASK)
1524 << MAC_IPG_IFG_IPGR1_SHIFT) |
1525 (((u32) hw->ipgr2 & MAC_IPG_IFG_IPGR2_MASK)
1526 << MAC_IPG_IFG_IPGR2_SHIFT);
1527 iowrite32(value, hw->hw_addr + REG_MAC_IPG_IFG);
1528
1529 /* config Half-Duplex Control */
1530 value = ((u32) hw->lcol & MAC_HALF_DUPLX_CTRL_LCOL_MASK) |
1531 (((u32) hw->max_retry & MAC_HALF_DUPLX_CTRL_RETRY_MASK)
1532 << MAC_HALF_DUPLX_CTRL_RETRY_SHIFT) |
1533 MAC_HALF_DUPLX_CTRL_EXC_DEF_EN |
1534 (0xa << MAC_HALF_DUPLX_CTRL_ABEBT_SHIFT) |
1535 (((u32) hw->jam_ipg & MAC_HALF_DUPLX_CTRL_JAMIPG_MASK)
1536 << MAC_HALF_DUPLX_CTRL_JAMIPG_SHIFT);
1537 iowrite32(value, hw->hw_addr + REG_MAC_HALF_DUPLX_CTRL);
1538
1539 /* set Interrupt Moderator Timer */
1540 iowrite16(adapter->imt, hw->hw_addr + REG_IRQ_MODU_TIMER_INIT);
1541 iowrite32(MASTER_CTRL_ITIMER_EN, hw->hw_addr + REG_MASTER_CTRL);
1542
1543 /* set Interrupt Clear Timer */
1544 iowrite16(adapter->ict, hw->hw_addr + REG_CMBDISDMA_TIMER);
1545
1546 /* set max frame size hw will accept */
1547 iowrite32(hw->max_frame_size, hw->hw_addr + REG_MTU);
1548
1549 /* jumbo size & rrd retirement timer */
1550 value = (((u32) hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK)
1551 << RXQ_JMBOSZ_TH_SHIFT) |
1552 (((u32) hw->rx_jumbo_lkah & RXQ_JMBO_LKAH_MASK)
1553 << RXQ_JMBO_LKAH_SHIFT) |
1554 (((u32) hw->rrd_ret_timer & RXQ_RRD_TIMER_MASK)
1555 << RXQ_RRD_TIMER_SHIFT);
1556 iowrite32(value, hw->hw_addr + REG_RXQ_JMBOSZ_RRDTIM);
1557
1558 /* Flow Control */
1559 switch (hw->dev_rev) {
1560 case 0x8001:
1561 case 0x9001:
1562 case 0x9002:
1563 case 0x9003:
1564 set_flow_ctrl_old(adapter);
1565 break;
1566 default:
1567 set_flow_ctrl_new(hw);
1568 break;
1569 }
1570
1571 /* config TXQ */
1572 value = (((u32) hw->tpd_burst & TXQ_CTRL_TPD_BURST_NUM_MASK)
1573 << TXQ_CTRL_TPD_BURST_NUM_SHIFT) |
1574 (((u32) hw->txf_burst & TXQ_CTRL_TXF_BURST_NUM_MASK)
1575 << TXQ_CTRL_TXF_BURST_NUM_SHIFT) |
1576 (((u32) hw->tpd_fetch_th & TXQ_CTRL_TPD_FETCH_TH_MASK)
1577 << TXQ_CTRL_TPD_FETCH_TH_SHIFT) | TXQ_CTRL_ENH_MODE |
1578 TXQ_CTRL_EN;
1579 iowrite32(value, hw->hw_addr + REG_TXQ_CTRL);
1580
1581 /* min tpd fetch gap & tx jumbo packet size threshold for taskoffload */
1582 value = (((u32) hw->tx_jumbo_task_th & TX_JUMBO_TASK_TH_MASK)
1583 << TX_JUMBO_TASK_TH_SHIFT) |
1584 (((u32) hw->tpd_fetch_gap & TX_TPD_MIN_IPG_MASK)
1585 << TX_TPD_MIN_IPG_SHIFT);
1586 iowrite32(value, hw->hw_addr + REG_TX_JUMBO_TASK_TH_TPD_IPG);
1587
1588 /* config RXQ */
1589 value = (((u32) hw->rfd_burst & RXQ_CTRL_RFD_BURST_NUM_MASK)
1590 << RXQ_CTRL_RFD_BURST_NUM_SHIFT) |
1591 (((u32) hw->rrd_burst & RXQ_CTRL_RRD_BURST_THRESH_MASK)
1592 << RXQ_CTRL_RRD_BURST_THRESH_SHIFT) |
1593 (((u32) hw->rfd_fetch_gap & RXQ_CTRL_RFD_PREF_MIN_IPG_MASK)
1594 << RXQ_CTRL_RFD_PREF_MIN_IPG_SHIFT) | RXQ_CTRL_CUT_THRU_EN |
1595 RXQ_CTRL_EN;
1596 iowrite32(value, hw->hw_addr + REG_RXQ_CTRL);
1597
1598 /* config DMA Engine */
1599 value = ((((u32) hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK)
1600 << DMA_CTRL_DMAR_BURST_LEN_SHIFT) |
1601 ((((u32) hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK)
1602 << DMA_CTRL_DMAW_BURST_LEN_SHIFT) | DMA_CTRL_DMAR_EN |
1603 DMA_CTRL_DMAW_EN;
1604 value |= (u32) hw->dma_ord;
1605 if (atl1_rcb_128 == hw->rcb_value)
1606 value |= DMA_CTRL_RCB_VALUE;
1607 iowrite32(value, hw->hw_addr + REG_DMA_CTRL);
1608
1609 /* config CMB / SMB */
1610 value = (hw->cmb_tpd > adapter->tpd_ring.count) ?
1611 hw->cmb_tpd : adapter->tpd_ring.count;
1612 value <<= 16;
1613 value |= hw->cmb_rrd;
1614 iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TH);
1615 value = hw->cmb_rx_timer | ((u32) hw->cmb_tx_timer << 16);
1616 iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TIMER);
1617 iowrite32(hw->smb_timer, hw->hw_addr + REG_SMB_TIMER);
1618
1619 /* --- enable CMB / SMB */
1620 value = CSMB_CTRL_CMB_EN | CSMB_CTRL_SMB_EN;
1621 iowrite32(value, hw->hw_addr + REG_CSMB_CTRL);
1622
1623 value = ioread32(adapter->hw.hw_addr + REG_ISR);
1624 if (unlikely((value & ISR_PHY_LINKDOWN) != 0))
1625 value = 1; /* config failed */
1626 else
1627 value = 0;
1628
1629 /* clear all interrupt status */
1630 iowrite32(0x3fffffff, adapter->hw.hw_addr + REG_ISR);
1631 iowrite32(0, adapter->hw.hw_addr + REG_ISR);
1632 return value;
1633 }
1634
1635 /*
1636 * atl1_pcie_patch - Patch for PCIE module
1637 */
1638 static void atl1_pcie_patch(struct atl1_adapter *adapter)
1639 {
1640 u32 value;
1641
1642 /* much vendor magic here */
1643 value = 0x6500;
1644 iowrite32(value, adapter->hw.hw_addr + 0x12FC);
1645 /* pcie flow control mode change */
1646 value = ioread32(adapter->hw.hw_addr + 0x1008);
1647 value |= 0x8000;
1648 iowrite32(value, adapter->hw.hw_addr + 0x1008);
1649 }
1650
1651 /*
1652 * When ACPI resume on some VIA MotherBoard, the Interrupt Disable bit/0x400
1653 * on PCI Command register is disable.
1654 * The function enable this bit.
1655 * Brackett, 2006/03/15
1656 */
1657 static void atl1_via_workaround(struct atl1_adapter *adapter)
1658 {
1659 unsigned long value;
1660
1661 value = ioread16(adapter->hw.hw_addr + PCI_COMMAND);
1662 if (value & PCI_COMMAND_INTX_DISABLE)
1663 value &= ~PCI_COMMAND_INTX_DISABLE;
1664 iowrite32(value, adapter->hw.hw_addr + PCI_COMMAND);
1665 }
1666
1667 static void atl1_inc_smb(struct atl1_adapter *adapter)
1668 {
1669 struct stats_msg_block *smb = adapter->smb.smb;
1670
1671 /* Fill out the OS statistics structure */
1672 adapter->soft_stats.rx_packets += smb->rx_ok;
1673 adapter->soft_stats.tx_packets += smb->tx_ok;
1674 adapter->soft_stats.rx_bytes += smb->rx_byte_cnt;
1675 adapter->soft_stats.tx_bytes += smb->tx_byte_cnt;
1676 adapter->soft_stats.multicast += smb->rx_mcast;
1677 adapter->soft_stats.collisions += (smb->tx_1_col + smb->tx_2_col * 2 +
1678 smb->tx_late_col + smb->tx_abort_col * adapter->hw.max_retry);
1679
1680 /* Rx Errors */
1681 adapter->soft_stats.rx_errors += (smb->rx_frag + smb->rx_fcs_err +
1682 smb->rx_len_err + smb->rx_sz_ov + smb->rx_rxf_ov +
1683 smb->rx_rrd_ov + smb->rx_align_err);
1684 adapter->soft_stats.rx_fifo_errors += smb->rx_rxf_ov;
1685 adapter->soft_stats.rx_length_errors += smb->rx_len_err;
1686 adapter->soft_stats.rx_crc_errors += smb->rx_fcs_err;
1687 adapter->soft_stats.rx_frame_errors += smb->rx_align_err;
1688 adapter->soft_stats.rx_missed_errors += (smb->rx_rrd_ov +
1689 smb->rx_rxf_ov);
1690
1691 adapter->soft_stats.rx_pause += smb->rx_pause;
1692 adapter->soft_stats.rx_rrd_ov += smb->rx_rrd_ov;
1693 adapter->soft_stats.rx_trunc += smb->rx_sz_ov;
1694
1695 /* Tx Errors */
1696 adapter->soft_stats.tx_errors += (smb->tx_late_col +
1697 smb->tx_abort_col + smb->tx_underrun + smb->tx_trunc);
1698 adapter->soft_stats.tx_fifo_errors += smb->tx_underrun;
1699 adapter->soft_stats.tx_aborted_errors += smb->tx_abort_col;
1700 adapter->soft_stats.tx_window_errors += smb->tx_late_col;
1701
1702 adapter->soft_stats.excecol += smb->tx_abort_col;
1703 adapter->soft_stats.deffer += smb->tx_defer;
1704 adapter->soft_stats.scc += smb->tx_1_col;
1705 adapter->soft_stats.mcc += smb->tx_2_col;
1706 adapter->soft_stats.latecol += smb->tx_late_col;
1707 adapter->soft_stats.tx_underun += smb->tx_underrun;
1708 adapter->soft_stats.tx_trunc += smb->tx_trunc;
1709 adapter->soft_stats.tx_pause += smb->tx_pause;
1710
1711 adapter->net_stats.rx_packets = adapter->soft_stats.rx_packets;
1712 adapter->net_stats.tx_packets = adapter->soft_stats.tx_packets;
1713 adapter->net_stats.rx_bytes = adapter->soft_stats.rx_bytes;
1714 adapter->net_stats.tx_bytes = adapter->soft_stats.tx_bytes;
1715 adapter->net_stats.multicast = adapter->soft_stats.multicast;
1716 adapter->net_stats.collisions = adapter->soft_stats.collisions;
1717 adapter->net_stats.rx_errors = adapter->soft_stats.rx_errors;
1718 adapter->net_stats.rx_over_errors =
1719 adapter->soft_stats.rx_missed_errors;
1720 adapter->net_stats.rx_length_errors =
1721 adapter->soft_stats.rx_length_errors;
1722 adapter->net_stats.rx_crc_errors = adapter->soft_stats.rx_crc_errors;
1723 adapter->net_stats.rx_frame_errors =
1724 adapter->soft_stats.rx_frame_errors;
1725 adapter->net_stats.rx_fifo_errors = adapter->soft_stats.rx_fifo_errors;
1726 adapter->net_stats.rx_missed_errors =
1727 adapter->soft_stats.rx_missed_errors;
1728 adapter->net_stats.tx_errors = adapter->soft_stats.tx_errors;
1729 adapter->net_stats.tx_fifo_errors = adapter->soft_stats.tx_fifo_errors;
1730 adapter->net_stats.tx_aborted_errors =
1731 adapter->soft_stats.tx_aborted_errors;
1732 adapter->net_stats.tx_window_errors =
1733 adapter->soft_stats.tx_window_errors;
1734 adapter->net_stats.tx_carrier_errors =
1735 adapter->soft_stats.tx_carrier_errors;
1736 }
1737
1738 static void atl1_update_mailbox(struct atl1_adapter *adapter)
1739 {
1740 unsigned long flags;
1741 u32 tpd_next_to_use;
1742 u32 rfd_next_to_use;
1743 u32 rrd_next_to_clean;
1744 u32 value;
1745
1746 spin_lock_irqsave(&adapter->mb_lock, flags);
1747
1748 tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use);
1749 rfd_next_to_use = atomic_read(&adapter->rfd_ring.next_to_use);
1750 rrd_next_to_clean = atomic_read(&adapter->rrd_ring.next_to_clean);
1751
1752 value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) <<
1753 MB_RFD_PROD_INDX_SHIFT) |
1754 ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) <<
1755 MB_RRD_CONS_INDX_SHIFT) |
1756 ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) <<
1757 MB_TPD_PROD_INDX_SHIFT);
1758 iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX);
1759
1760 spin_unlock_irqrestore(&adapter->mb_lock, flags);
1761 }
1762
1763 static void atl1_clean_alloc_flag(struct atl1_adapter *adapter,
1764 struct rx_return_desc *rrd, u16 offset)
1765 {
1766 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1767
1768 while (rfd_ring->next_to_clean != (rrd->buf_indx + offset)) {
1769 rfd_ring->buffer_info[rfd_ring->next_to_clean].alloced = 0;
1770 if (++rfd_ring->next_to_clean == rfd_ring->count) {
1771 rfd_ring->next_to_clean = 0;
1772 }
1773 }
1774 }
1775
1776 static void atl1_update_rfd_index(struct atl1_adapter *adapter,
1777 struct rx_return_desc *rrd)
1778 {
1779 u16 num_buf;
1780
1781 num_buf = (rrd->xsz.xsum_sz.pkt_size + adapter->rx_buffer_len - 1) /
1782 adapter->rx_buffer_len;
1783 if (rrd->num_buf == num_buf)
1784 /* clean alloc flag for bad rrd */
1785 atl1_clean_alloc_flag(adapter, rrd, num_buf);
1786 }
1787
1788 static void atl1_rx_checksum(struct atl1_adapter *adapter,
1789 struct rx_return_desc *rrd, struct sk_buff *skb)
1790 {
1791 struct pci_dev *pdev = adapter->pdev;
1792
1793 skb->ip_summed = CHECKSUM_NONE;
1794
1795 if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) {
1796 if (rrd->err_flg & (ERR_FLAG_CRC | ERR_FLAG_TRUNC |
1797 ERR_FLAG_CODE | ERR_FLAG_OV)) {
1798 adapter->hw_csum_err++;
1799 if (netif_msg_rx_err(adapter))
1800 dev_printk(KERN_DEBUG, &pdev->dev,
1801 "rx checksum error\n");
1802 return;
1803 }
1804 }
1805
1806 /* not IPv4 */
1807 if (!(rrd->pkt_flg & PACKET_FLAG_IPV4))
1808 /* checksum is invalid, but it's not an IPv4 pkt, so ok */
1809 return;
1810
1811 /* IPv4 packet */
1812 if (likely(!(rrd->err_flg &
1813 (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM)))) {
1814 skb->ip_summed = CHECKSUM_UNNECESSARY;
1815 adapter->hw_csum_good++;
1816 return;
1817 }
1818
1819 /* IPv4, but hardware thinks its checksum is wrong */
1820 if (netif_msg_rx_err(adapter))
1821 dev_printk(KERN_DEBUG, &pdev->dev,
1822 "hw csum wrong, pkt_flag:%x, err_flag:%x\n",
1823 rrd->pkt_flg, rrd->err_flg);
1824 skb->ip_summed = CHECKSUM_COMPLETE;
1825 skb->csum = htons(rrd->xsz.xsum_sz.rx_chksum);
1826 adapter->hw_csum_err++;
1827 return;
1828 }
1829
1830 /*
1831 * atl1_alloc_rx_buffers - Replace used receive buffers
1832 * @adapter: address of board private structure
1833 */
1834 static u16 atl1_alloc_rx_buffers(struct atl1_adapter *adapter)
1835 {
1836 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1837 struct pci_dev *pdev = adapter->pdev;
1838 struct page *page;
1839 unsigned long offset;
1840 struct atl1_buffer *buffer_info, *next_info;
1841 struct sk_buff *skb;
1842 u16 num_alloc = 0;
1843 u16 rfd_next_to_use, next_next;
1844 struct rx_free_desc *rfd_desc;
1845
1846 next_next = rfd_next_to_use = atomic_read(&rfd_ring->next_to_use);
1847 if (++next_next == rfd_ring->count)
1848 next_next = 0;
1849 buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
1850 next_info = &rfd_ring->buffer_info[next_next];
1851
1852 while (!buffer_info->alloced && !next_info->alloced) {
1853 if (buffer_info->skb) {
1854 buffer_info->alloced = 1;
1855 goto next;
1856 }
1857
1858 rfd_desc = ATL1_RFD_DESC(rfd_ring, rfd_next_to_use);
1859
1860 skb = netdev_alloc_skb(adapter->netdev,
1861 adapter->rx_buffer_len + NET_IP_ALIGN);
1862 if (unlikely(!skb)) {
1863 /* Better luck next round */
1864 adapter->net_stats.rx_dropped++;
1865 break;
1866 }
1867
1868 /*
1869 * Make buffer alignment 2 beyond a 16 byte boundary
1870 * this will result in a 16 byte aligned IP header after
1871 * the 14 byte MAC header is removed
1872 */
1873 skb_reserve(skb, NET_IP_ALIGN);
1874
1875 buffer_info->alloced = 1;
1876 buffer_info->skb = skb;
1877 buffer_info->length = (u16) adapter->rx_buffer_len;
1878 page = virt_to_page(skb->data);
1879 offset = (unsigned long)skb->data & ~PAGE_MASK;
1880 buffer_info->dma = pci_map_page(pdev, page, offset,
1881 adapter->rx_buffer_len,
1882 PCI_DMA_FROMDEVICE);
1883 rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
1884 rfd_desc->buf_len = cpu_to_le16(adapter->rx_buffer_len);
1885 rfd_desc->coalese = 0;
1886
1887 next:
1888 rfd_next_to_use = next_next;
1889 if (unlikely(++next_next == rfd_ring->count))
1890 next_next = 0;
1891
1892 buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
1893 next_info = &rfd_ring->buffer_info[next_next];
1894 num_alloc++;
1895 }
1896
1897 if (num_alloc) {
1898 /*
1899 * Force memory writes to complete before letting h/w
1900 * know there are new descriptors to fetch. (Only
1901 * applicable for weak-ordered memory model archs,
1902 * such as IA-64).
1903 */
1904 wmb();
1905 atomic_set(&rfd_ring->next_to_use, (int)rfd_next_to_use);
1906 }
1907 return num_alloc;
1908 }
1909
1910 static void atl1_intr_rx(struct atl1_adapter *adapter)
1911 {
1912 int i, count;
1913 u16 length;
1914 u16 rrd_next_to_clean;
1915 u32 value;
1916 struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1917 struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1918 struct atl1_buffer *buffer_info;
1919 struct rx_return_desc *rrd;
1920 struct sk_buff *skb;
1921
1922 count = 0;
1923
1924 rrd_next_to_clean = atomic_read(&rrd_ring->next_to_clean);
1925
1926 while (1) {
1927 rrd = ATL1_RRD_DESC(rrd_ring, rrd_next_to_clean);
1928 i = 1;
1929 if (likely(rrd->xsz.valid)) { /* packet valid */
1930 chk_rrd:
1931 /* check rrd status */
1932 if (likely(rrd->num_buf == 1))
1933 goto rrd_ok;
1934 else if (netif_msg_rx_err(adapter)) {
1935 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1936 "unexpected RRD buffer count\n");
1937 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1938 "rx_buf_len = %d\n",
1939 adapter->rx_buffer_len);
1940 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1941 "RRD num_buf = %d\n",
1942 rrd->num_buf);
1943 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1944 "RRD pkt_len = %d\n",
1945 rrd->xsz.xsum_sz.pkt_size);
1946 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1947 "RRD pkt_flg = 0x%08X\n",
1948 rrd->pkt_flg);
1949 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1950 "RRD err_flg = 0x%08X\n",
1951 rrd->err_flg);
1952 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1953 "RRD vlan_tag = 0x%08X\n",
1954 rrd->vlan_tag);
1955 }
1956
1957 /* rrd seems to be bad */
1958 if (unlikely(i-- > 0)) {
1959 /* rrd may not be DMAed completely */
1960 udelay(1);
1961 goto chk_rrd;
1962 }
1963 /* bad rrd */
1964 if (netif_msg_rx_err(adapter))
1965 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1966 "bad RRD\n");
1967 /* see if update RFD index */
1968 if (rrd->num_buf > 1)
1969 atl1_update_rfd_index(adapter, rrd);
1970
1971 /* update rrd */
1972 rrd->xsz.valid = 0;
1973 if (++rrd_next_to_clean == rrd_ring->count)
1974 rrd_next_to_clean = 0;
1975 count++;
1976 continue;
1977 } else { /* current rrd still not be updated */
1978
1979 break;
1980 }
1981 rrd_ok:
1982 /* clean alloc flag for bad rrd */
1983 atl1_clean_alloc_flag(adapter, rrd, 0);
1984
1985 buffer_info = &rfd_ring->buffer_info[rrd->buf_indx];
1986 if (++rfd_ring->next_to_clean == rfd_ring->count)
1987 rfd_ring->next_to_clean = 0;
1988
1989 /* update rrd next to clean */
1990 if (++rrd_next_to_clean == rrd_ring->count)
1991 rrd_next_to_clean = 0;
1992 count++;
1993
1994 if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) {
1995 if (!(rrd->err_flg &
1996 (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM
1997 | ERR_FLAG_LEN))) {
1998 /* packet error, don't need upstream */
1999 buffer_info->alloced = 0;
2000 rrd->xsz.valid = 0;
2001 continue;
2002 }
2003 }
2004
2005 /* Good Receive */
2006 pci_unmap_page(adapter->pdev, buffer_info->dma,
2007 buffer_info->length, PCI_DMA_FROMDEVICE);
2008 buffer_info->dma = 0;
2009 skb = buffer_info->skb;
2010 length = le16_to_cpu(rrd->xsz.xsum_sz.pkt_size);
2011
2012 skb_put(skb, length - ETH_FCS_LEN);
2013
2014 /* Receive Checksum Offload */
2015 atl1_rx_checksum(adapter, rrd, skb);
2016 skb->protocol = eth_type_trans(skb, adapter->netdev);
2017
2018 if (adapter->vlgrp && (rrd->pkt_flg & PACKET_FLAG_VLAN_INS)) {
2019 u16 vlan_tag = (rrd->vlan_tag >> 4) |
2020 ((rrd->vlan_tag & 7) << 13) |
2021 ((rrd->vlan_tag & 8) << 9);
2022 vlan_hwaccel_rx(skb, adapter->vlgrp, vlan_tag);
2023 } else
2024 netif_rx(skb);
2025
2026 /* let protocol layer free skb */
2027 buffer_info->skb = NULL;
2028 buffer_info->alloced = 0;
2029 rrd->xsz.valid = 0;
2030
2031 adapter->netdev->last_rx = jiffies;
2032 }
2033
2034 atomic_set(&rrd_ring->next_to_clean, rrd_next_to_clean);
2035
2036 atl1_alloc_rx_buffers(adapter);
2037
2038 /* update mailbox ? */
2039 if (count) {
2040 u32 tpd_next_to_use;
2041 u32 rfd_next_to_use;
2042
2043 spin_lock(&adapter->mb_lock);
2044
2045 tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use);
2046 rfd_next_to_use =
2047 atomic_read(&adapter->rfd_ring.next_to_use);
2048 rrd_next_to_clean =
2049 atomic_read(&adapter->rrd_ring.next_to_clean);
2050 value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) <<
2051 MB_RFD_PROD_INDX_SHIFT) |
2052 ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) <<
2053 MB_RRD_CONS_INDX_SHIFT) |
2054 ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) <<
2055 MB_TPD_PROD_INDX_SHIFT);
2056 iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX);
2057 spin_unlock(&adapter->mb_lock);
2058 }
2059 }
2060
2061 static void atl1_intr_tx(struct atl1_adapter *adapter)
2062 {
2063 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2064 struct atl1_buffer *buffer_info;
2065 u16 sw_tpd_next_to_clean;
2066 u16 cmb_tpd_next_to_clean;
2067
2068 sw_tpd_next_to_clean = atomic_read(&tpd_ring->next_to_clean);
2069 cmb_tpd_next_to_clean = le16_to_cpu(adapter->cmb.cmb->tpd_cons_idx);
2070
2071 while (cmb_tpd_next_to_clean != sw_tpd_next_to_clean) {
2072 struct tx_packet_desc *tpd;
2073
2074 tpd = ATL1_TPD_DESC(tpd_ring, sw_tpd_next_to_clean);
2075 buffer_info = &tpd_ring->buffer_info[sw_tpd_next_to_clean];
2076 if (buffer_info->dma) {
2077 pci_unmap_page(adapter->pdev, buffer_info->dma,
2078 buffer_info->length, PCI_DMA_TODEVICE);
2079 buffer_info->dma = 0;
2080 }
2081
2082 if (buffer_info->skb) {
2083 dev_kfree_skb_irq(buffer_info->skb);
2084 buffer_info->skb = NULL;
2085 }
2086
2087 if (++sw_tpd_next_to_clean == tpd_ring->count)
2088 sw_tpd_next_to_clean = 0;
2089 }
2090 atomic_set(&tpd_ring->next_to_clean, sw_tpd_next_to_clean);
2091
2092 if (netif_queue_stopped(adapter->netdev)
2093 && netif_carrier_ok(adapter->netdev))
2094 netif_wake_queue(adapter->netdev);
2095 }
2096
2097 static u16 atl1_tpd_avail(struct atl1_tpd_ring *tpd_ring)
2098 {
2099 u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean);
2100 u16 next_to_use = atomic_read(&tpd_ring->next_to_use);
2101 return ((next_to_clean > next_to_use) ?
2102 next_to_clean - next_to_use - 1 :
2103 tpd_ring->count + next_to_clean - next_to_use - 1);
2104 }
2105
2106 static int atl1_tso(struct atl1_adapter *adapter, struct sk_buff *skb,
2107 struct tx_packet_desc *ptpd)
2108 {
2109 /* spinlock held */
2110 u8 hdr_len, ip_off;
2111 u32 real_len;
2112 int err;
2113
2114 if (skb_shinfo(skb)->gso_size) {
2115 if (skb_header_cloned(skb)) {
2116 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2117 if (unlikely(err))
2118 return -1;
2119 }
2120
2121 if (skb->protocol == htons(ETH_P_IP)) {
2122 struct iphdr *iph = ip_hdr(skb);
2123
2124 real_len = (((unsigned char *)iph - skb->data) +
2125 ntohs(iph->tot_len));
2126 if (real_len < skb->len)
2127 pskb_trim(skb, real_len);
2128 hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb));
2129 if (skb->len == hdr_len) {
2130 iph->check = 0;
2131 tcp_hdr(skb)->check =
2132 ~csum_tcpudp_magic(iph->saddr,
2133 iph->daddr, tcp_hdrlen(skb),
2134 IPPROTO_TCP, 0);
2135 ptpd->word3 |= (iph->ihl & TPD_IPHL_MASK) <<
2136 TPD_IPHL_SHIFT;
2137 ptpd->word3 |= ((tcp_hdrlen(skb) >> 2) &
2138 TPD_TCPHDRLEN_MASK) <<
2139 TPD_TCPHDRLEN_SHIFT;
2140 ptpd->word3 |= 1 << TPD_IP_CSUM_SHIFT;
2141 ptpd->word3 |= 1 << TPD_TCP_CSUM_SHIFT;
2142 return 1;
2143 }
2144
2145 iph->check = 0;
2146 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2147 iph->daddr, 0, IPPROTO_TCP, 0);
2148 ip_off = (unsigned char *)iph -
2149 (unsigned char *) skb_network_header(skb);
2150 if (ip_off == 8) /* 802.3-SNAP frame */
2151 ptpd->word3 |= 1 << TPD_ETHTYPE_SHIFT;
2152 else if (ip_off != 0)
2153 return -2;
2154
2155 ptpd->word3 |= (iph->ihl & TPD_IPHL_MASK) <<
2156 TPD_IPHL_SHIFT;
2157 ptpd->word3 |= ((tcp_hdrlen(skb) >> 2) &
2158 TPD_TCPHDRLEN_MASK) << TPD_TCPHDRLEN_SHIFT;
2159 ptpd->word3 |= (skb_shinfo(skb)->gso_size &
2160 TPD_MSS_MASK) << TPD_MSS_SHIFT;
2161 ptpd->word3 |= 1 << TPD_SEGMENT_EN_SHIFT;
2162 return 3;
2163 }
2164 }
2165 return false;
2166 }
2167
2168 static int atl1_tx_csum(struct atl1_adapter *adapter, struct sk_buff *skb,
2169 struct tx_packet_desc *ptpd)
2170 {
2171 u8 css, cso;
2172
2173 if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
2174 css = (u8) (skb->csum_start - skb_headroom(skb));
2175 cso = css + (u8) skb->csum_offset;
2176 if (unlikely(css & 0x1)) {
2177 /* L1 hardware requires an even number here */
2178 if (netif_msg_tx_err(adapter))
2179 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2180 "payload offset not an even number\n");
2181 return -1;
2182 }
2183 ptpd->word3 |= (css & TPD_PLOADOFFSET_MASK) <<
2184 TPD_PLOADOFFSET_SHIFT;
2185 ptpd->word3 |= (cso & TPD_CCSUMOFFSET_MASK) <<
2186 TPD_CCSUMOFFSET_SHIFT;
2187 ptpd->word3 |= 1 << TPD_CUST_CSUM_EN_SHIFT;
2188 return true;
2189 }
2190 return 0;
2191 }
2192
2193 static void atl1_tx_map(struct atl1_adapter *adapter, struct sk_buff *skb,
2194 struct tx_packet_desc *ptpd)
2195 {
2196 /* spinlock held */
2197 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2198 struct atl1_buffer *buffer_info;
2199 u16 buf_len = skb->len;
2200 struct page *page;
2201 unsigned long offset;
2202 unsigned int nr_frags;
2203 unsigned int f;
2204 int retval;
2205 u16 next_to_use;
2206 u16 data_len;
2207 u8 hdr_len;
2208
2209 buf_len -= skb->data_len;
2210 nr_frags = skb_shinfo(skb)->nr_frags;
2211 next_to_use = atomic_read(&tpd_ring->next_to_use);
2212 buffer_info = &tpd_ring->buffer_info[next_to_use];
2213 if (unlikely(buffer_info->skb))
2214 BUG();
2215 /* put skb in last TPD */
2216 buffer_info->skb = NULL;
2217
2218 retval = (ptpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK;
2219 if (retval) {
2220 /* TSO */
2221 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
2222 buffer_info->length = hdr_len;
2223 page = virt_to_page(skb->data);
2224 offset = (unsigned long)skb->data & ~PAGE_MASK;
2225 buffer_info->dma = pci_map_page(adapter->pdev, page,
2226 offset, hdr_len,
2227 PCI_DMA_TODEVICE);
2228
2229 if (++next_to_use == tpd_ring->count)
2230 next_to_use = 0;
2231
2232 if (buf_len > hdr_len) {
2233 int i, nseg;
2234
2235 data_len = buf_len - hdr_len;
2236 nseg = (data_len + ATL1_MAX_TX_BUF_LEN - 1) /
2237 ATL1_MAX_TX_BUF_LEN;
2238 for (i = 0; i < nseg; i++) {
2239 buffer_info =
2240 &tpd_ring->buffer_info[next_to_use];
2241 buffer_info->skb = NULL;
2242 buffer_info->length =
2243 (ATL1_MAX_TX_BUF_LEN >=
2244 data_len) ? ATL1_MAX_TX_BUF_LEN : data_len;
2245 data_len -= buffer_info->length;
2246 page = virt_to_page(skb->data +
2247 (hdr_len + i * ATL1_MAX_TX_BUF_LEN));
2248 offset = (unsigned long)(skb->data +
2249 (hdr_len + i * ATL1_MAX_TX_BUF_LEN)) &
2250 ~PAGE_MASK;
2251 buffer_info->dma = pci_map_page(adapter->pdev,
2252 page, offset, buffer_info->length,
2253 PCI_DMA_TODEVICE);
2254 if (++next_to_use == tpd_ring->count)
2255 next_to_use = 0;
2256 }
2257 }
2258 } else {
2259 /* not TSO */
2260 buffer_info->length = buf_len;
2261 page = virt_to_page(skb->data);
2262 offset = (unsigned long)skb->data & ~PAGE_MASK;
2263 buffer_info->dma = pci_map_page(adapter->pdev, page,
2264 offset, buf_len, PCI_DMA_TODEVICE);
2265 if (++next_to_use == tpd_ring->count)
2266 next_to_use = 0;
2267 }
2268
2269 for (f = 0; f < nr_frags; f++) {
2270 struct skb_frag_struct *frag;
2271 u16 i, nseg;
2272
2273 frag = &skb_shinfo(skb)->frags[f];
2274 buf_len = frag->size;
2275
2276 nseg = (buf_len + ATL1_MAX_TX_BUF_LEN - 1) /
2277 ATL1_MAX_TX_BUF_LEN;
2278 for (i = 0; i < nseg; i++) {
2279 buffer_info = &tpd_ring->buffer_info[next_to_use];
2280 if (unlikely(buffer_info->skb))
2281 BUG();
2282 buffer_info->skb = NULL;
2283 buffer_info->length = (buf_len > ATL1_MAX_TX_BUF_LEN) ?
2284 ATL1_MAX_TX_BUF_LEN : buf_len;
2285 buf_len -= buffer_info->length;
2286 buffer_info->dma = pci_map_page(adapter->pdev,
2287 frag->page,
2288 frag->page_offset + (i * ATL1_MAX_TX_BUF_LEN),
2289 buffer_info->length, PCI_DMA_TODEVICE);
2290
2291 if (++next_to_use == tpd_ring->count)
2292 next_to_use = 0;
2293 }
2294 }
2295
2296 /* last tpd's buffer-info */
2297 buffer_info->skb = skb;
2298 }
2299
2300 static void atl1_tx_queue(struct atl1_adapter *adapter, u16 count,
2301 struct tx_packet_desc *ptpd)
2302 {
2303 /* spinlock held */
2304 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2305 struct atl1_buffer *buffer_info;
2306 struct tx_packet_desc *tpd;
2307 u16 j;
2308 u32 val;
2309 u16 next_to_use = (u16) atomic_read(&tpd_ring->next_to_use);
2310
2311 for (j = 0; j < count; j++) {
2312 buffer_info = &tpd_ring->buffer_info[next_to_use];
2313 tpd = ATL1_TPD_DESC(&adapter->tpd_ring, next_to_use);
2314 if (tpd != ptpd)
2315 memcpy(tpd, ptpd, sizeof(struct tx_packet_desc));
2316 tpd->buffer_addr = cpu_to_le64(buffer_info->dma);
2317 tpd->word2 = (cpu_to_le16(buffer_info->length) &
2318 TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT;
2319
2320 /*
2321 * if this is the first packet in a TSO chain, set
2322 * TPD_HDRFLAG, otherwise, clear it.
2323 */
2324 val = (tpd->word3 >> TPD_SEGMENT_EN_SHIFT) &
2325 TPD_SEGMENT_EN_MASK;
2326 if (val) {
2327 if (!j)
2328 tpd->word3 |= 1 << TPD_HDRFLAG_SHIFT;
2329 else
2330 tpd->word3 &= ~(1 << TPD_HDRFLAG_SHIFT);
2331 }
2332
2333 if (j == (count - 1))
2334 tpd->word3 |= 1 << TPD_EOP_SHIFT;
2335
2336 if (++next_to_use == tpd_ring->count)
2337 next_to_use = 0;
2338 }
2339 /*
2340 * Force memory writes to complete before letting h/w
2341 * know there are new descriptors to fetch. (Only
2342 * applicable for weak-ordered memory model archs,
2343 * such as IA-64).
2344 */
2345 wmb();
2346
2347 atomic_set(&tpd_ring->next_to_use, next_to_use);
2348 }
2349
2350 static int atl1_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
2351 {
2352 struct atl1_adapter *adapter = netdev_priv(netdev);
2353 struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2354 int len = skb->len;
2355 int tso;
2356 int count = 1;
2357 int ret_val;
2358 struct tx_packet_desc *ptpd;
2359 u16 frag_size;
2360 u16 vlan_tag;
2361 unsigned long flags;
2362 unsigned int nr_frags = 0;
2363 unsigned int mss = 0;
2364 unsigned int f;
2365 unsigned int proto_hdr_len;
2366
2367 len -= skb->data_len;
2368
2369 if (unlikely(skb->len <= 0)) {
2370 dev_kfree_skb_any(skb);
2371 return NETDEV_TX_OK;
2372 }
2373
2374 nr_frags = skb_shinfo(skb)->nr_frags;
2375 for (f = 0; f < nr_frags; f++) {
2376 frag_size = skb_shinfo(skb)->frags[f].size;
2377 if (frag_size)
2378 count += (frag_size + ATL1_MAX_TX_BUF_LEN - 1) /
2379 ATL1_MAX_TX_BUF_LEN;
2380 }
2381
2382 mss = skb_shinfo(skb)->gso_size;
2383 if (mss) {
2384 if (skb->protocol == ntohs(ETH_P_IP)) {
2385 proto_hdr_len = (skb_transport_offset(skb) +
2386 tcp_hdrlen(skb));
2387 if (unlikely(proto_hdr_len > len)) {
2388 dev_kfree_skb_any(skb);
2389 return NETDEV_TX_OK;
2390 }
2391 /* need additional TPD ? */
2392 if (proto_hdr_len != len)
2393 count += (len - proto_hdr_len +
2394 ATL1_MAX_TX_BUF_LEN - 1) /
2395 ATL1_MAX_TX_BUF_LEN;
2396 }
2397 }
2398
2399 if (!spin_trylock_irqsave(&adapter->lock, flags)) {
2400 /* Can't get lock - tell upper layer to requeue */
2401 if (netif_msg_tx_queued(adapter))
2402 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2403 "tx locked\n");
2404 return NETDEV_TX_LOCKED;
2405 }
2406
2407 if (atl1_tpd_avail(&adapter->tpd_ring) < count) {
2408 /* not enough descriptors */
2409 netif_stop_queue(netdev);
2410 spin_unlock_irqrestore(&adapter->lock, flags);
2411 if (netif_msg_tx_queued(adapter))
2412 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2413 "tx busy\n");
2414 return NETDEV_TX_BUSY;
2415 }
2416
2417 ptpd = ATL1_TPD_DESC(tpd_ring,
2418 (u16) atomic_read(&tpd_ring->next_to_use));
2419 memset(ptpd, 0, sizeof(struct tx_packet_desc));
2420
2421 if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
2422 vlan_tag = vlan_tx_tag_get(skb);
2423 vlan_tag = (vlan_tag << 4) | (vlan_tag >> 13) |
2424 ((vlan_tag >> 9) & 0x8);
2425 ptpd->word3 |= 1 << TPD_INS_VL_TAG_SHIFT;
2426 ptpd->word3 |= (vlan_tag & TPD_VL_TAGGED_MASK) <<
2427 TPD_VL_TAGGED_SHIFT;
2428 }
2429
2430 tso = atl1_tso(adapter, skb, ptpd);
2431 if (tso < 0) {
2432 spin_unlock_irqrestore(&adapter->lock, flags);
2433 dev_kfree_skb_any(skb);
2434 return NETDEV_TX_OK;
2435 }
2436
2437 if (!tso) {
2438 ret_val = atl1_tx_csum(adapter, skb, ptpd);
2439 if (ret_val < 0) {
2440 spin_unlock_irqrestore(&adapter->lock, flags);
2441 dev_kfree_skb_any(skb);
2442 return NETDEV_TX_OK;
2443 }
2444 }
2445
2446 atl1_tx_map(adapter, skb, ptpd);
2447 atl1_tx_queue(adapter, count, ptpd);
2448 atl1_update_mailbox(adapter);
2449 spin_unlock_irqrestore(&adapter->lock, flags);
2450 netdev->trans_start = jiffies;
2451 return NETDEV_TX_OK;
2452 }
2453
2454 /*
2455 * atl1_intr - Interrupt Handler
2456 * @irq: interrupt number
2457 * @data: pointer to a network interface device structure
2458 * @pt_regs: CPU registers structure
2459 */
2460 static irqreturn_t atl1_intr(int irq, void *data)
2461 {
2462 struct atl1_adapter *adapter = netdev_priv(data);
2463 u32 status;
2464 int max_ints = 10;
2465
2466 status = adapter->cmb.cmb->int_stats;
2467 if (!status)
2468 return IRQ_NONE;
2469
2470 do {
2471 /* clear CMB interrupt status at once */
2472 adapter->cmb.cmb->int_stats = 0;
2473
2474 if (status & ISR_GPHY) /* clear phy status */
2475 atlx_clear_phy_int(adapter);
2476
2477 /* clear ISR status, and Enable CMB DMA/Disable Interrupt */
2478 iowrite32(status | ISR_DIS_INT, adapter->hw.hw_addr + REG_ISR);
2479
2480 /* check if SMB intr */
2481 if (status & ISR_SMB)
2482 atl1_inc_smb(adapter);
2483
2484 /* check if PCIE PHY Link down */
2485 if (status & ISR_PHY_LINKDOWN) {
2486 if (netif_msg_intr(adapter))
2487 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2488 "pcie phy link down %x\n", status);
2489 if (netif_running(adapter->netdev)) { /* reset MAC */
2490 iowrite32(0, adapter->hw.hw_addr + REG_IMR);
2491 schedule_work(&adapter->pcie_dma_to_rst_task);
2492 return IRQ_HANDLED;
2493 }
2494 }
2495
2496 /* check if DMA read/write error ? */
2497 if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) {
2498 if (netif_msg_intr(adapter))
2499 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2500 "pcie DMA r/w error (status = 0x%x)\n",
2501 status);
2502 iowrite32(0, adapter->hw.hw_addr + REG_IMR);
2503 schedule_work(&adapter->pcie_dma_to_rst_task);
2504 return IRQ_HANDLED;
2505 }
2506
2507 /* link event */
2508 if (status & ISR_GPHY) {
2509 adapter->soft_stats.tx_carrier_errors++;
2510 atl1_check_for_link(adapter);
2511 }
2512
2513 /* transmit event */
2514 if (status & ISR_CMB_TX)
2515 atl1_intr_tx(adapter);
2516
2517 /* rx exception */
2518 if (unlikely(status & (ISR_RXF_OV | ISR_RFD_UNRUN |
2519 ISR_RRD_OV | ISR_HOST_RFD_UNRUN |
2520 ISR_HOST_RRD_OV | ISR_CMB_RX))) {
2521 if (status & (ISR_RXF_OV | ISR_RFD_UNRUN |
2522 ISR_RRD_OV | ISR_HOST_RFD_UNRUN |
2523 ISR_HOST_RRD_OV))
2524 if (netif_msg_intr(adapter))
2525 dev_printk(KERN_DEBUG,
2526 &adapter->pdev->dev,
2527 "rx exception, ISR = 0x%x\n",
2528 status);
2529 atl1_intr_rx(adapter);
2530 }
2531
2532 if (--max_ints < 0)
2533 break;
2534
2535 } while ((status = adapter->cmb.cmb->int_stats));
2536
2537 /* re-enable Interrupt */
2538 iowrite32(ISR_DIS_SMB | ISR_DIS_DMA, adapter->hw.hw_addr + REG_ISR);
2539 return IRQ_HANDLED;
2540 }
2541
2542 /*
2543 * atl1_watchdog - Timer Call-back
2544 * @data: pointer to netdev cast into an unsigned long
2545 */
2546 static void atl1_watchdog(unsigned long data)
2547 {
2548 struct atl1_adapter *adapter = (struct atl1_adapter *)data;
2549
2550 /* Reset the timer */
2551 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
2552 }
2553
2554 /*
2555 * atl1_phy_config - Timer Call-back
2556 * @data: pointer to netdev cast into an unsigned long
2557 */
2558 static void atl1_phy_config(unsigned long data)
2559 {
2560 struct atl1_adapter *adapter = (struct atl1_adapter *)data;
2561 struct atl1_hw *hw = &adapter->hw;
2562 unsigned long flags;
2563
2564 spin_lock_irqsave(&adapter->lock, flags);
2565 adapter->phy_timer_pending = false;
2566 atl1_write_phy_reg(hw, MII_ADVERTISE, hw->mii_autoneg_adv_reg);
2567 atl1_write_phy_reg(hw, MII_ATLX_CR, hw->mii_1000t_ctrl_reg);
2568 atl1_write_phy_reg(hw, MII_BMCR, MII_CR_RESET | MII_CR_AUTO_NEG_EN);
2569 spin_unlock_irqrestore(&adapter->lock, flags);
2570 }
2571
2572 /*
2573 * Orphaned vendor comment left intact here:
2574 * <vendor comment>
2575 * If TPD Buffer size equal to 0, PCIE DMAR_TO_INT
2576 * will assert. We do soft reset <0x1400=1> according
2577 * with the SPEC. BUT, it seemes that PCIE or DMA
2578 * state-machine will not be reset. DMAR_TO_INT will
2579 * assert again and again.
2580 * </vendor comment>
2581 */
2582
2583 static int atl1_reset(struct atl1_adapter *adapter)
2584 {
2585 int ret;
2586 ret = atl1_reset_hw(&adapter->hw);
2587 if (ret)
2588 return ret;
2589 return atl1_init_hw(&adapter->hw);
2590 }
2591
2592 static s32 atl1_up(struct atl1_adapter *adapter)
2593 {
2594 struct net_device *netdev = adapter->netdev;
2595 int err;
2596 int irq_flags = IRQF_SAMPLE_RANDOM;
2597
2598 /* hardware has been reset, we need to reload some things */
2599 atlx_set_multi(netdev);
2600 atl1_init_ring_ptrs(adapter);
2601 atlx_restore_vlan(adapter);
2602 err = atl1_alloc_rx_buffers(adapter);
2603 if (unlikely(!err))
2604 /* no RX BUFFER allocated */
2605 return -ENOMEM;
2606
2607 if (unlikely(atl1_configure(adapter))) {
2608 err = -EIO;
2609 goto err_up;
2610 }
2611
2612 err = pci_enable_msi(adapter->pdev);
2613 if (err) {
2614 if (netif_msg_ifup(adapter))
2615 dev_info(&adapter->pdev->dev,
2616 "Unable to enable MSI: %d\n", err);
2617 irq_flags |= IRQF_SHARED;
2618 }
2619
2620 err = request_irq(adapter->pdev->irq, &atl1_intr, irq_flags,
2621 netdev->name, netdev);
2622 if (unlikely(err))
2623 goto err_up;
2624
2625 mod_timer(&adapter->watchdog_timer, jiffies);
2626 atlx_irq_enable(adapter);
2627 atl1_check_link(adapter);
2628 netif_start_queue(netdev);
2629 return 0;
2630
2631 err_up:
2632 pci_disable_msi(adapter->pdev);
2633 /* free rx_buffers */
2634 atl1_clean_rx_ring(adapter);
2635 return err;
2636 }
2637
2638 static void atl1_down(struct atl1_adapter *adapter)
2639 {
2640 struct net_device *netdev = adapter->netdev;
2641
2642 del_timer_sync(&adapter->watchdog_timer);
2643 del_timer_sync(&adapter->phy_config_timer);
2644 adapter->phy_timer_pending = false;
2645
2646 atlx_irq_disable(adapter);
2647 free_irq(adapter->pdev->irq, netdev);
2648 pci_disable_msi(adapter->pdev);
2649 atl1_reset_hw(&adapter->hw);
2650 adapter->cmb.cmb->int_stats = 0;
2651
2652 adapter->link_speed = SPEED_0;
2653 adapter->link_duplex = -1;
2654 netif_carrier_off(netdev);
2655 netif_stop_queue(netdev);
2656
2657 atl1_clean_tx_ring(adapter);
2658 atl1_clean_rx_ring(adapter);
2659 }
2660
2661 static void atl1_tx_timeout_task(struct work_struct *work)
2662 {
2663 struct atl1_adapter *adapter =
2664 container_of(work, struct atl1_adapter, tx_timeout_task);
2665 struct net_device *netdev = adapter->netdev;
2666
2667 netif_device_detach(netdev);
2668 atl1_down(adapter);
2669 atl1_up(adapter);
2670 netif_device_attach(netdev);
2671 }
2672
2673 /*
2674 * atl1_change_mtu - Change the Maximum Transfer Unit
2675 * @netdev: network interface device structure
2676 * @new_mtu: new value for maximum frame size
2677 *
2678 * Returns 0 on success, negative on failure
2679 */
2680 static int atl1_change_mtu(struct net_device *netdev, int new_mtu)
2681 {
2682 struct atl1_adapter *adapter = netdev_priv(netdev);
2683 int old_mtu = netdev->mtu;
2684 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2685
2686 if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) ||
2687 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
2688 if (netif_msg_link(adapter))
2689 dev_warn(&adapter->pdev->dev, "invalid MTU setting\n");
2690 return -EINVAL;
2691 }
2692
2693 adapter->hw.max_frame_size = max_frame;
2694 adapter->hw.tx_jumbo_task_th = (max_frame + 7) >> 3;
2695 adapter->rx_buffer_len = (max_frame + 7) & ~7;
2696 adapter->hw.rx_jumbo_th = adapter->rx_buffer_len / 8;
2697
2698 netdev->mtu = new_mtu;
2699 if ((old_mtu != new_mtu) && netif_running(netdev)) {
2700 atl1_down(adapter);
2701 atl1_up(adapter);
2702 }
2703
2704 return 0;
2705 }
2706
2707 /*
2708 * atl1_open - Called when a network interface is made active
2709 * @netdev: network interface device structure
2710 *
2711 * Returns 0 on success, negative value on failure
2712 *
2713 * The open entry point is called when a network interface is made
2714 * active by the system (IFF_UP). At this point all resources needed
2715 * for transmit and receive operations are allocated, the interrupt
2716 * handler is registered with the OS, the watchdog timer is started,
2717 * and the stack is notified that the interface is ready.
2718 */
2719 static int atl1_open(struct net_device *netdev)
2720 {
2721 struct atl1_adapter *adapter = netdev_priv(netdev);
2722 int err;
2723
2724 /* allocate transmit descriptors */
2725 err = atl1_setup_ring_resources(adapter);
2726 if (err)
2727 return err;
2728
2729 err = atl1_up(adapter);
2730 if (err)
2731 goto err_up;
2732
2733 return 0;
2734
2735 err_up:
2736 atl1_reset(adapter);
2737 return err;
2738 }
2739
2740 /*
2741 * atl1_close - Disables a network interface
2742 * @netdev: network interface device structure
2743 *
2744 * Returns 0, this is not allowed to fail
2745 *
2746 * The close entry point is called when an interface is de-activated
2747 * by the OS. The hardware is still under the drivers control, but
2748 * needs to be disabled. A global MAC reset is issued to stop the
2749 * hardware, and all transmit and receive resources are freed.
2750 */
2751 static int atl1_close(struct net_device *netdev)
2752 {
2753 struct atl1_adapter *adapter = netdev_priv(netdev);
2754 atl1_down(adapter);
2755 atl1_free_ring_resources(adapter);
2756 return 0;
2757 }
2758
2759 #ifdef CONFIG_PM
2760 static int atl1_suspend(struct pci_dev *pdev, pm_message_t state)
2761 {
2762 struct net_device *netdev = pci_get_drvdata(pdev);
2763 struct atl1_adapter *adapter = netdev_priv(netdev);
2764 struct atl1_hw *hw = &adapter->hw;
2765 u32 ctrl = 0;
2766 u32 wufc = adapter->wol;
2767 u32 val;
2768 int retval;
2769 u16 speed;
2770 u16 duplex;
2771
2772 netif_device_detach(netdev);
2773 if (netif_running(netdev))
2774 atl1_down(adapter);
2775
2776 retval = pci_save_state(pdev);
2777 if (retval)
2778 return retval;
2779
2780 atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl);
2781 atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl);
2782 val = ctrl & BMSR_LSTATUS;
2783 if (val)
2784 wufc &= ~ATLX_WUFC_LNKC;
2785
2786 if (val && wufc) {
2787 val = atl1_get_speed_and_duplex(hw, &speed, &duplex);
2788 if (val) {
2789 if (netif_msg_ifdown(adapter))
2790 dev_printk(KERN_DEBUG, &pdev->dev,
2791 "error getting speed/duplex\n");
2792 goto disable_wol;
2793 }
2794
2795 ctrl = 0;
2796
2797 /* enable magic packet WOL */
2798 if (wufc & ATLX_WUFC_MAG)
2799 ctrl |= (WOL_MAGIC_EN | WOL_MAGIC_PME_EN);
2800 iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL);
2801 ioread32(hw->hw_addr + REG_WOL_CTRL);
2802
2803 /* configure the mac */
2804 ctrl = MAC_CTRL_RX_EN;
2805 ctrl |= ((u32)((speed == SPEED_1000) ? MAC_CTRL_SPEED_1000 :
2806 MAC_CTRL_SPEED_10_100) << MAC_CTRL_SPEED_SHIFT);
2807 if (duplex == FULL_DUPLEX)
2808 ctrl |= MAC_CTRL_DUPLX;
2809 ctrl |= (((u32)adapter->hw.preamble_len &
2810 MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT);
2811 if (adapter->vlgrp)
2812 ctrl |= MAC_CTRL_RMV_VLAN;
2813 if (wufc & ATLX_WUFC_MAG)
2814 ctrl |= MAC_CTRL_BC_EN;
2815 iowrite32(ctrl, hw->hw_addr + REG_MAC_CTRL);
2816 ioread32(hw->hw_addr + REG_MAC_CTRL);
2817
2818 /* poke the PHY */
2819 ctrl = ioread32(hw->hw_addr + REG_PCIE_PHYMISC);
2820 ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
2821 iowrite32(ctrl, hw->hw_addr + REG_PCIE_PHYMISC);
2822 ioread32(hw->hw_addr + REG_PCIE_PHYMISC);
2823
2824 pci_enable_wake(pdev, pci_choose_state(pdev, state), 1);
2825 goto exit;
2826 }
2827
2828 if (!val && wufc) {
2829 ctrl |= (WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN);
2830 iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL);
2831 ioread32(hw->hw_addr + REG_WOL_CTRL);
2832 iowrite32(0, hw->hw_addr + REG_MAC_CTRL);
2833 ioread32(hw->hw_addr + REG_MAC_CTRL);
2834 hw->phy_configured = false;
2835 pci_enable_wake(pdev, pci_choose_state(pdev, state), 1);
2836 goto exit;
2837 }
2838
2839 disable_wol:
2840 iowrite32(0, hw->hw_addr + REG_WOL_CTRL);
2841 ioread32(hw->hw_addr + REG_WOL_CTRL);
2842 ctrl = ioread32(hw->hw_addr + REG_PCIE_PHYMISC);
2843 ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
2844 iowrite32(ctrl, hw->hw_addr + REG_PCIE_PHYMISC);
2845 ioread32(hw->hw_addr + REG_PCIE_PHYMISC);
2846 hw->phy_configured = false;
2847 pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
2848 exit:
2849 if (netif_running(netdev))
2850 pci_disable_msi(adapter->pdev);
2851 pci_disable_device(pdev);
2852 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2853
2854 return 0;
2855 }
2856
2857 static int atl1_resume(struct pci_dev *pdev)
2858 {
2859 struct net_device *netdev = pci_get_drvdata(pdev);
2860 struct atl1_adapter *adapter = netdev_priv(netdev);
2861 u32 err;
2862
2863 pci_set_power_state(pdev, PCI_D0);
2864 pci_restore_state(pdev);
2865
2866 err = pci_enable_device(pdev);
2867 if (err) {
2868 if (netif_msg_ifup(adapter))
2869 dev_printk(KERN_DEBUG, &pdev->dev,
2870 "error enabling pci device\n");
2871 return err;
2872 }
2873
2874 pci_set_master(pdev);
2875 iowrite32(0, adapter->hw.hw_addr + REG_WOL_CTRL);
2876 pci_enable_wake(pdev, PCI_D3hot, 0);
2877 pci_enable_wake(pdev, PCI_D3cold, 0);
2878
2879 atl1_reset_hw(&adapter->hw);
2880 adapter->cmb.cmb->int_stats = 0;
2881
2882 if (netif_running(netdev))
2883 atl1_up(adapter);
2884 netif_device_attach(netdev);
2885
2886 return 0;
2887 }
2888 #else
2889 #define atl1_suspend NULL
2890 #define atl1_resume NULL
2891 #endif
2892
2893 static void atl1_shutdown(struct pci_dev *pdev)
2894 {
2895 #ifdef CONFIG_PM
2896 atl1_suspend(pdev, PMSG_SUSPEND);
2897 #endif
2898 }
2899
2900 #ifdef CONFIG_NET_POLL_CONTROLLER
2901 static void atl1_poll_controller(struct net_device *netdev)
2902 {
2903 disable_irq(netdev->irq);
2904 atl1_intr(netdev->irq, netdev);
2905 enable_irq(netdev->irq);
2906 }
2907 #endif
2908
2909 /*
2910 * atl1_probe - Device Initialization Routine
2911 * @pdev: PCI device information struct
2912 * @ent: entry in atl1_pci_tbl
2913 *
2914 * Returns 0 on success, negative on failure
2915 *
2916 * atl1_probe initializes an adapter identified by a pci_dev structure.
2917 * The OS initialization, configuring of the adapter private structure,
2918 * and a hardware reset occur.
2919 */
2920 static int __devinit atl1_probe(struct pci_dev *pdev,
2921 const struct pci_device_id *ent)
2922 {
2923 struct net_device *netdev;
2924 struct atl1_adapter *adapter;
2925 static int cards_found = 0;
2926 int err;
2927
2928 err = pci_enable_device(pdev);
2929 if (err)
2930 return err;
2931
2932 /*
2933 * The atl1 chip can DMA to 64-bit addresses, but it uses a single
2934 * shared register for the high 32 bits, so only a single, aligned,
2935 * 4 GB physical address range can be used at a time.
2936 *
2937 * Supporting 64-bit DMA on this hardware is more trouble than it's
2938 * worth. It is far easier to limit to 32-bit DMA than update
2939 * various kernel subsystems to support the mechanics required by a
2940 * fixed-high-32-bit system.
2941 */
2942 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2943 if (err) {
2944 dev_err(&pdev->dev, "no usable DMA configuration\n");
2945 goto err_dma;
2946 }
2947 /*
2948 * Mark all PCI regions associated with PCI device
2949 * pdev as being reserved by owner atl1_driver_name
2950 */
2951 err = pci_request_regions(pdev, ATLX_DRIVER_NAME);
2952 if (err)
2953 goto err_request_regions;
2954
2955 /*
2956 * Enables bus-mastering on the device and calls
2957 * pcibios_set_master to do the needed arch specific settings
2958 */
2959 pci_set_master(pdev);
2960
2961 netdev = alloc_etherdev(sizeof(struct atl1_adapter));
2962 if (!netdev) {
2963 err = -ENOMEM;
2964 goto err_alloc_etherdev;
2965 }
2966 SET_NETDEV_DEV(netdev, &pdev->dev);
2967
2968 pci_set_drvdata(pdev, netdev);
2969 adapter = netdev_priv(netdev);
2970 adapter->netdev = netdev;
2971 adapter->pdev = pdev;
2972 adapter->hw.back = adapter;
2973 adapter->msg_enable = netif_msg_init(debug, atl1_default_msg);
2974
2975 adapter->hw.hw_addr = pci_iomap(pdev, 0, 0);
2976 if (!adapter->hw.hw_addr) {
2977 err = -EIO;
2978 goto err_pci_iomap;
2979 }
2980 /* get device revision number */
2981 adapter->hw.dev_rev = ioread16(adapter->hw.hw_addr +
2982 (REG_MASTER_CTRL + 2));
2983 if (netif_msg_probe(adapter))
2984 dev_info(&pdev->dev, "version %s\n", ATLX_DRIVER_VERSION);
2985
2986 /* set default ring resource counts */
2987 adapter->rfd_ring.count = adapter->rrd_ring.count = ATL1_DEFAULT_RFD;
2988 adapter->tpd_ring.count = ATL1_DEFAULT_TPD;
2989
2990 adapter->mii.dev = netdev;
2991 adapter->mii.mdio_read = mdio_read;
2992 adapter->mii.mdio_write = mdio_write;
2993 adapter->mii.phy_id_mask = 0x1f;
2994 adapter->mii.reg_num_mask = 0x1f;
2995
2996 netdev->open = &atl1_open;
2997 netdev->stop = &atl1_close;
2998 netdev->hard_start_xmit = &atl1_xmit_frame;
2999 netdev->get_stats = &atlx_get_stats;
3000 netdev->set_multicast_list = &atlx_set_multi;
3001 netdev->set_mac_address = &atl1_set_mac;
3002 netdev->change_mtu = &atl1_change_mtu;
3003 netdev->do_ioctl = &atlx_ioctl;
3004 netdev->tx_timeout = &atlx_tx_timeout;
3005 netdev->watchdog_timeo = 5 * HZ;
3006 #ifdef CONFIG_NET_POLL_CONTROLLER
3007 netdev->poll_controller = atl1_poll_controller;
3008 #endif
3009 netdev->vlan_rx_register = atlx_vlan_rx_register;
3010
3011 netdev->ethtool_ops = &atl1_ethtool_ops;
3012 adapter->bd_number = cards_found;
3013
3014 /* setup the private structure */
3015 err = atl1_sw_init(adapter);
3016 if (err)
3017 goto err_common;
3018
3019 netdev->features = NETIF_F_HW_CSUM;
3020 netdev->features |= NETIF_F_SG;
3021 netdev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX);
3022 netdev->features |= NETIF_F_TSO;
3023 netdev->features |= NETIF_F_LLTX;
3024
3025 /*
3026 * patch for some L1 of old version,
3027 * the final version of L1 may not need these
3028 * patches
3029 */
3030 /* atl1_pcie_patch(adapter); */
3031
3032 /* really reset GPHY core */
3033 iowrite16(0, adapter->hw.hw_addr + REG_PHY_ENABLE);
3034
3035 /*
3036 * reset the controller to
3037 * put the device in a known good starting state
3038 */
3039 if (atl1_reset_hw(&adapter->hw)) {
3040 err = -EIO;
3041 goto err_common;
3042 }
3043
3044 /* copy the MAC address out of the EEPROM */
3045 atl1_read_mac_addr(&adapter->hw);
3046 memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
3047
3048 if (!is_valid_ether_addr(netdev->dev_addr)) {
3049 err = -EIO;
3050 goto err_common;
3051 }
3052
3053 atl1_check_options(adapter);
3054
3055 /* pre-init the MAC, and setup link */
3056 err = atl1_init_hw(&adapter->hw);
3057 if (err) {
3058 err = -EIO;
3059 goto err_common;
3060 }
3061
3062 atl1_pcie_patch(adapter);
3063 /* assume we have no link for now */
3064 netif_carrier_off(netdev);
3065 netif_stop_queue(netdev);
3066
3067 init_timer(&adapter->watchdog_timer);
3068 adapter->watchdog_timer.function = &atl1_watchdog;
3069 adapter->watchdog_timer.data = (unsigned long)adapter;
3070
3071 init_timer(&adapter->phy_config_timer);
3072 adapter->phy_config_timer.function = &atl1_phy_config;
3073 adapter->phy_config_timer.data = (unsigned long)adapter;
3074 adapter->phy_timer_pending = false;
3075
3076 INIT_WORK(&adapter->tx_timeout_task, atl1_tx_timeout_task);
3077
3078 INIT_WORK(&adapter->link_chg_task, atlx_link_chg_task);
3079
3080 INIT_WORK(&adapter->pcie_dma_to_rst_task, atl1_tx_timeout_task);
3081
3082 err = register_netdev(netdev);
3083 if (err)
3084 goto err_common;
3085
3086 cards_found++;
3087 atl1_via_workaround(adapter);
3088 return 0;
3089
3090 err_common:
3091 pci_iounmap(pdev, adapter->hw.hw_addr);
3092 err_pci_iomap:
3093 free_netdev(netdev);
3094 err_alloc_etherdev:
3095 pci_release_regions(pdev);
3096 err_dma:
3097 err_request_regions:
3098 pci_disable_device(pdev);
3099 return err;
3100 }
3101
3102 /*
3103 * atl1_remove - Device Removal Routine
3104 * @pdev: PCI device information struct
3105 *
3106 * atl1_remove is called by the PCI subsystem to alert the driver
3107 * that it should release a PCI device. The could be caused by a
3108 * Hot-Plug event, or because the driver is going to be removed from
3109 * memory.
3110 */
3111 static void __devexit atl1_remove(struct pci_dev *pdev)
3112 {
3113 struct net_device *netdev = pci_get_drvdata(pdev);
3114 struct atl1_adapter *adapter;
3115 /* Device not available. Return. */
3116 if (!netdev)
3117 return;
3118
3119 adapter = netdev_priv(netdev);
3120
3121 /*
3122 * Some atl1 boards lack persistent storage for their MAC, and get it
3123 * from the BIOS during POST. If we've been messing with the MAC
3124 * address, we need to save the permanent one.
3125 */
3126 if (memcmp(adapter->hw.mac_addr, adapter->hw.perm_mac_addr, ETH_ALEN)) {
3127 memcpy(adapter->hw.mac_addr, adapter->hw.perm_mac_addr,
3128 ETH_ALEN);
3129 atl1_set_mac_addr(&adapter->hw);
3130 }
3131
3132 iowrite16(0, adapter->hw.hw_addr + REG_PHY_ENABLE);
3133 unregister_netdev(netdev);
3134 pci_iounmap(pdev, adapter->hw.hw_addr);
3135 pci_release_regions(pdev);
3136 free_netdev(netdev);
3137 pci_disable_device(pdev);
3138 }
3139
3140 static struct pci_driver atl1_driver = {
3141 .name = ATLX_DRIVER_NAME,
3142 .id_table = atl1_pci_tbl,
3143 .probe = atl1_probe,
3144 .remove = __devexit_p(atl1_remove),
3145 .suspend = atl1_suspend,
3146 .resume = atl1_resume,
3147 .shutdown = atl1_shutdown
3148 };
3149
3150 /*
3151 * atl1_exit_module - Driver Exit Cleanup Routine
3152 *
3153 * atl1_exit_module is called just before the driver is removed
3154 * from memory.
3155 */
3156 static void __exit atl1_exit_module(void)
3157 {
3158 pci_unregister_driver(&atl1_driver);
3159 }
3160
3161 /*
3162 * atl1_init_module - Driver Registration Routine
3163 *
3164 * atl1_init_module is the first routine called when the driver is
3165 * loaded. All it does is register with the PCI subsystem.
3166 */
3167 static int __init atl1_init_module(void)
3168 {
3169 return pci_register_driver(&atl1_driver);
3170 }
3171
3172 module_init(atl1_init_module);
3173 module_exit(atl1_exit_module);
3174
3175 struct atl1_stats {
3176 char stat_string[ETH_GSTRING_LEN];
3177 int sizeof_stat;
3178 int stat_offset;
3179 };
3180
3181 #define ATL1_STAT(m) \
3182 sizeof(((struct atl1_adapter *)0)->m), offsetof(struct atl1_adapter, m)
3183
3184 static struct atl1_stats atl1_gstrings_stats[] = {
3185 {"rx_packets", ATL1_STAT(soft_stats.rx_packets)},
3186 {"tx_packets", ATL1_STAT(soft_stats.tx_packets)},
3187 {"rx_bytes", ATL1_STAT(soft_stats.rx_bytes)},
3188 {"tx_bytes", ATL1_STAT(soft_stats.tx_bytes)},
3189 {"rx_errors", ATL1_STAT(soft_stats.rx_errors)},
3190 {"tx_errors", ATL1_STAT(soft_stats.tx_errors)},
3191 {"rx_dropped", ATL1_STAT(net_stats.rx_dropped)},
3192 {"tx_dropped", ATL1_STAT(net_stats.tx_dropped)},
3193 {"multicast", ATL1_STAT(soft_stats.multicast)},
3194 {"collisions", ATL1_STAT(soft_stats.collisions)},
3195 {"rx_length_errors", ATL1_STAT(soft_stats.rx_length_errors)},
3196 {"rx_over_errors", ATL1_STAT(soft_stats.rx_missed_errors)},
3197 {"rx_crc_errors", ATL1_STAT(soft_stats.rx_crc_errors)},
3198 {"rx_frame_errors", ATL1_STAT(soft_stats.rx_frame_errors)},
3199 {"rx_fifo_errors", ATL1_STAT(soft_stats.rx_fifo_errors)},
3200 {"rx_missed_errors", ATL1_STAT(soft_stats.rx_missed_errors)},
3201 {"tx_aborted_errors", ATL1_STAT(soft_stats.tx_aborted_errors)},
3202 {"tx_carrier_errors", ATL1_STAT(soft_stats.tx_carrier_errors)},
3203 {"tx_fifo_errors", ATL1_STAT(soft_stats.tx_fifo_errors)},
3204 {"tx_window_errors", ATL1_STAT(soft_stats.tx_window_errors)},
3205 {"tx_abort_exce_coll", ATL1_STAT(soft_stats.excecol)},
3206 {"tx_abort_late_coll", ATL1_STAT(soft_stats.latecol)},
3207 {"tx_deferred_ok", ATL1_STAT(soft_stats.deffer)},
3208 {"tx_single_coll_ok", ATL1_STAT(soft_stats.scc)},
3209 {"tx_multi_coll_ok", ATL1_STAT(soft_stats.mcc)},
3210 {"tx_underun", ATL1_STAT(soft_stats.tx_underun)},
3211 {"tx_trunc", ATL1_STAT(soft_stats.tx_trunc)},
3212 {"tx_pause", ATL1_STAT(soft_stats.tx_pause)},
3213 {"rx_pause", ATL1_STAT(soft_stats.rx_pause)},
3214 {"rx_rrd_ov", ATL1_STAT(soft_stats.rx_rrd_ov)},
3215 {"rx_trunc", ATL1_STAT(soft_stats.rx_trunc)}
3216 };
3217
3218 static void atl1_get_ethtool_stats(struct net_device *netdev,
3219 struct ethtool_stats *stats, u64 *data)
3220 {
3221 struct atl1_adapter *adapter = netdev_priv(netdev);
3222 int i;
3223 char *p;
3224
3225 for (i = 0; i < ARRAY_SIZE(atl1_gstrings_stats); i++) {
3226 p = (char *)adapter+atl1_gstrings_stats[i].stat_offset;
3227 data[i] = (atl1_gstrings_stats[i].sizeof_stat ==
3228 sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
3229 }
3230
3231 }
3232
3233 static int atl1_get_sset_count(struct net_device *netdev, int sset)
3234 {
3235 switch (sset) {
3236 case ETH_SS_STATS:
3237 return ARRAY_SIZE(atl1_gstrings_stats);
3238 default:
3239 return -EOPNOTSUPP;
3240 }
3241 }
3242
3243 static int atl1_get_settings(struct net_device *netdev,
3244 struct ethtool_cmd *ecmd)
3245 {
3246 struct atl1_adapter *adapter = netdev_priv(netdev);
3247 struct atl1_hw *hw = &adapter->hw;
3248
3249 ecmd->supported = (SUPPORTED_10baseT_Half |
3250 SUPPORTED_10baseT_Full |
3251 SUPPORTED_100baseT_Half |
3252 SUPPORTED_100baseT_Full |
3253 SUPPORTED_1000baseT_Full |
3254 SUPPORTED_Autoneg | SUPPORTED_TP);
3255 ecmd->advertising = ADVERTISED_TP;
3256 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3257 hw->media_type == MEDIA_TYPE_1000M_FULL) {
3258 ecmd->advertising |= ADVERTISED_Autoneg;
3259 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR) {
3260 ecmd->advertising |= ADVERTISED_Autoneg;
3261 ecmd->advertising |=
3262 (ADVERTISED_10baseT_Half |
3263 ADVERTISED_10baseT_Full |
3264 ADVERTISED_100baseT_Half |
3265 ADVERTISED_100baseT_Full |
3266 ADVERTISED_1000baseT_Full);
3267 } else
3268 ecmd->advertising |= (ADVERTISED_1000baseT_Full);
3269 }
3270 ecmd->port = PORT_TP;
3271 ecmd->phy_address = 0;
3272 ecmd->transceiver = XCVR_INTERNAL;
3273
3274 if (netif_carrier_ok(adapter->netdev)) {
3275 u16 link_speed, link_duplex;
3276 atl1_get_speed_and_duplex(hw, &link_speed, &link_duplex);
3277 ecmd->speed = link_speed;
3278 if (link_duplex == FULL_DUPLEX)
3279 ecmd->duplex = DUPLEX_FULL;
3280 else
3281 ecmd->duplex = DUPLEX_HALF;
3282 } else {
3283 ecmd->speed = -1;
3284 ecmd->duplex = -1;
3285 }
3286 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3287 hw->media_type == MEDIA_TYPE_1000M_FULL)
3288 ecmd->autoneg = AUTONEG_ENABLE;
3289 else
3290 ecmd->autoneg = AUTONEG_DISABLE;
3291
3292 return 0;
3293 }
3294
3295 static int atl1_set_settings(struct net_device *netdev,
3296 struct ethtool_cmd *ecmd)
3297 {
3298 struct atl1_adapter *adapter = netdev_priv(netdev);
3299 struct atl1_hw *hw = &adapter->hw;
3300 u16 phy_data;
3301 int ret_val = 0;
3302 u16 old_media_type = hw->media_type;
3303
3304 if (netif_running(adapter->netdev)) {
3305 if (netif_msg_link(adapter))
3306 dev_dbg(&adapter->pdev->dev,
3307 "ethtool shutting down adapter\n");
3308 atl1_down(adapter);
3309 }
3310
3311 if (ecmd->autoneg == AUTONEG_ENABLE)
3312 hw->media_type = MEDIA_TYPE_AUTO_SENSOR;
3313 else {
3314 if (ecmd->speed == SPEED_1000) {
3315 if (ecmd->duplex != DUPLEX_FULL) {
3316 if (netif_msg_link(adapter))
3317 dev_warn(&adapter->pdev->dev,
3318 "1000M half is invalid\n");
3319 ret_val = -EINVAL;
3320 goto exit_sset;
3321 }
3322 hw->media_type = MEDIA_TYPE_1000M_FULL;
3323 } else if (ecmd->speed == SPEED_100) {
3324 if (ecmd->duplex == DUPLEX_FULL)
3325 hw->media_type = MEDIA_TYPE_100M_FULL;
3326 else
3327 hw->media_type = MEDIA_TYPE_100M_HALF;
3328 } else {
3329 if (ecmd->duplex == DUPLEX_FULL)
3330 hw->media_type = MEDIA_TYPE_10M_FULL;
3331 else
3332 hw->media_type = MEDIA_TYPE_10M_HALF;
3333 }
3334 }
3335 switch (hw->media_type) {
3336 case MEDIA_TYPE_AUTO_SENSOR:
3337 ecmd->advertising =
3338 ADVERTISED_10baseT_Half |
3339 ADVERTISED_10baseT_Full |
3340 ADVERTISED_100baseT_Half |
3341 ADVERTISED_100baseT_Full |
3342 ADVERTISED_1000baseT_Full |
3343 ADVERTISED_Autoneg | ADVERTISED_TP;
3344 break;
3345 case MEDIA_TYPE_1000M_FULL:
3346 ecmd->advertising =
3347 ADVERTISED_1000baseT_Full |
3348 ADVERTISED_Autoneg | ADVERTISED_TP;
3349 break;
3350 default:
3351 ecmd->advertising = 0;
3352 break;
3353 }
3354 if (atl1_phy_setup_autoneg_adv(hw)) {
3355 ret_val = -EINVAL;
3356 if (netif_msg_link(adapter))
3357 dev_warn(&adapter->pdev->dev,
3358 "invalid ethtool speed/duplex setting\n");
3359 goto exit_sset;
3360 }
3361 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3362 hw->media_type == MEDIA_TYPE_1000M_FULL)
3363 phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
3364 else {
3365 switch (hw->media_type) {
3366 case MEDIA_TYPE_100M_FULL:
3367 phy_data =
3368 MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
3369 MII_CR_RESET;
3370 break;
3371 case MEDIA_TYPE_100M_HALF:
3372 phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
3373 break;
3374 case MEDIA_TYPE_10M_FULL:
3375 phy_data =
3376 MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
3377 break;
3378 default:
3379 /* MEDIA_TYPE_10M_HALF: */
3380 phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
3381 break;
3382 }
3383 }
3384 atl1_write_phy_reg(hw, MII_BMCR, phy_data);
3385 exit_sset:
3386 if (ret_val)
3387 hw->media_type = old_media_type;
3388
3389 if (netif_running(adapter->netdev)) {
3390 if (netif_msg_link(adapter))
3391 dev_dbg(&adapter->pdev->dev,
3392 "ethtool starting adapter\n");
3393 atl1_up(adapter);
3394 } else if (!ret_val) {
3395 if (netif_msg_link(adapter))
3396 dev_dbg(&adapter->pdev->dev,
3397 "ethtool resetting adapter\n");
3398 atl1_reset(adapter);
3399 }
3400 return ret_val;
3401 }
3402
3403 static void atl1_get_drvinfo(struct net_device *netdev,
3404 struct ethtool_drvinfo *drvinfo)
3405 {
3406 struct atl1_adapter *adapter = netdev_priv(netdev);
3407
3408 strncpy(drvinfo->driver, ATLX_DRIVER_NAME, sizeof(drvinfo->driver));
3409 strncpy(drvinfo->version, ATLX_DRIVER_VERSION,
3410 sizeof(drvinfo->version));
3411 strncpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
3412 strncpy(drvinfo->bus_info, pci_name(adapter->pdev),
3413 sizeof(drvinfo->bus_info));
3414 drvinfo->eedump_len = ATL1_EEDUMP_LEN;
3415 }
3416
3417 static void atl1_get_wol(struct net_device *netdev,
3418 struct ethtool_wolinfo *wol)
3419 {
3420 struct atl1_adapter *adapter = netdev_priv(netdev);
3421
3422 wol->supported = WAKE_UCAST | WAKE_MCAST | WAKE_BCAST | WAKE_MAGIC;
3423 wol->wolopts = 0;
3424 if (adapter->wol & ATLX_WUFC_EX)
3425 wol->wolopts |= WAKE_UCAST;
3426 if (adapter->wol & ATLX_WUFC_MC)
3427 wol->wolopts |= WAKE_MCAST;
3428 if (adapter->wol & ATLX_WUFC_BC)
3429 wol->wolopts |= WAKE_BCAST;
3430 if (adapter->wol & ATLX_WUFC_MAG)
3431 wol->wolopts |= WAKE_MAGIC;
3432 return;
3433 }
3434
3435 static int atl1_set_wol(struct net_device *netdev,
3436 struct ethtool_wolinfo *wol)
3437 {
3438 struct atl1_adapter *adapter = netdev_priv(netdev);
3439
3440 if (wol->wolopts & (WAKE_PHY | WAKE_ARP | WAKE_MAGICSECURE))
3441 return -EOPNOTSUPP;
3442 adapter->wol = 0;
3443 if (wol->wolopts & WAKE_UCAST)
3444 adapter->wol |= ATLX_WUFC_EX;
3445 if (wol->wolopts & WAKE_MCAST)
3446 adapter->wol |= ATLX_WUFC_MC;
3447 if (wol->wolopts & WAKE_BCAST)
3448 adapter->wol |= ATLX_WUFC_BC;
3449 if (wol->wolopts & WAKE_MAGIC)
3450 adapter->wol |= ATLX_WUFC_MAG;
3451 return 0;
3452 }
3453
3454 static u32 atl1_get_msglevel(struct net_device *netdev)
3455 {
3456 struct atl1_adapter *adapter = netdev_priv(netdev);
3457 return adapter->msg_enable;
3458 }
3459
3460 static void atl1_set_msglevel(struct net_device *netdev, u32 value)
3461 {
3462 struct atl1_adapter *adapter = netdev_priv(netdev);
3463 adapter->msg_enable = value;
3464 }
3465
3466 static int atl1_get_regs_len(struct net_device *netdev)
3467 {
3468 return ATL1_REG_COUNT * sizeof(u32);
3469 }
3470
3471 static void atl1_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
3472 void *p)
3473 {
3474 struct atl1_adapter *adapter = netdev_priv(netdev);
3475 struct atl1_hw *hw = &adapter->hw;
3476 unsigned int i;
3477 u32 *regbuf = p;
3478
3479 for (i = 0; i < ATL1_REG_COUNT; i++) {
3480 /*
3481 * This switch statement avoids reserved regions
3482 * of register space.
3483 */
3484 switch (i) {
3485 case 6 ... 9:
3486 case 14:
3487 case 29 ... 31:
3488 case 34 ... 63:
3489 case 75 ... 127:
3490 case 136 ... 1023:
3491 case 1027 ... 1087:
3492 case 1091 ... 1151:
3493 case 1194 ... 1195:
3494 case 1200 ... 1201:
3495 case 1206 ... 1213:
3496 case 1216 ... 1279:
3497 case 1290 ... 1311:
3498 case 1323 ... 1343:
3499 case 1358 ... 1359:
3500 case 1368 ... 1375:
3501 case 1378 ... 1383:
3502 case 1388 ... 1391:
3503 case 1393 ... 1395:
3504 case 1402 ... 1403:
3505 case 1410 ... 1471:
3506 case 1522 ... 1535:
3507 /* reserved region; don't read it */
3508 regbuf[i] = 0;
3509 break;
3510 default:
3511 /* unreserved region */
3512 regbuf[i] = ioread32(hw->hw_addr + (i * sizeof(u32)));
3513 }
3514 }
3515 }
3516
3517 static void atl1_get_ringparam(struct net_device *netdev,
3518 struct ethtool_ringparam *ring)
3519 {
3520 struct atl1_adapter *adapter = netdev_priv(netdev);
3521 struct atl1_tpd_ring *txdr = &adapter->tpd_ring;
3522 struct atl1_rfd_ring *rxdr = &adapter->rfd_ring;
3523
3524 ring->rx_max_pending = ATL1_MAX_RFD;
3525 ring->tx_max_pending = ATL1_MAX_TPD;
3526 ring->rx_mini_max_pending = 0;
3527 ring->rx_jumbo_max_pending = 0;
3528 ring->rx_pending = rxdr->count;
3529 ring->tx_pending = txdr->count;
3530 ring->rx_mini_pending = 0;
3531 ring->rx_jumbo_pending = 0;
3532 }
3533
3534 static int atl1_set_ringparam(struct net_device *netdev,
3535 struct ethtool_ringparam *ring)
3536 {
3537 struct atl1_adapter *adapter = netdev_priv(netdev);
3538 struct atl1_tpd_ring *tpdr = &adapter->tpd_ring;
3539 struct atl1_rrd_ring *rrdr = &adapter->rrd_ring;
3540 struct atl1_rfd_ring *rfdr = &adapter->rfd_ring;
3541
3542 struct atl1_tpd_ring tpd_old, tpd_new;
3543 struct atl1_rfd_ring rfd_old, rfd_new;
3544 struct atl1_rrd_ring rrd_old, rrd_new;
3545 struct atl1_ring_header rhdr_old, rhdr_new;
3546 int err;
3547
3548 tpd_old = adapter->tpd_ring;
3549 rfd_old = adapter->rfd_ring;
3550 rrd_old = adapter->rrd_ring;
3551 rhdr_old = adapter->ring_header;
3552
3553 if (netif_running(adapter->netdev))
3554 atl1_down(adapter);
3555
3556 rfdr->count = (u16) max(ring->rx_pending, (u32) ATL1_MIN_RFD);
3557 rfdr->count = rfdr->count > ATL1_MAX_RFD ? ATL1_MAX_RFD :
3558 rfdr->count;
3559 rfdr->count = (rfdr->count + 3) & ~3;
3560 rrdr->count = rfdr->count;
3561
3562 tpdr->count = (u16) max(ring->tx_pending, (u32) ATL1_MIN_TPD);
3563 tpdr->count = tpdr->count > ATL1_MAX_TPD ? ATL1_MAX_TPD :
3564 tpdr->count;
3565 tpdr->count = (tpdr->count + 3) & ~3;
3566
3567 if (netif_running(adapter->netdev)) {
3568 /* try to get new resources before deleting old */
3569 err = atl1_setup_ring_resources(adapter);
3570 if (err)
3571 goto err_setup_ring;
3572
3573 /*
3574 * save the new, restore the old in order to free it,
3575 * then restore the new back again
3576 */
3577
3578 rfd_new = adapter->rfd_ring;
3579 rrd_new = adapter->rrd_ring;
3580 tpd_new = adapter->tpd_ring;
3581 rhdr_new = adapter->ring_header;
3582 adapter->rfd_ring = rfd_old;
3583 adapter->rrd_ring = rrd_old;
3584 adapter->tpd_ring = tpd_old;
3585 adapter->ring_header = rhdr_old;
3586 atl1_free_ring_resources(adapter);
3587 adapter->rfd_ring = rfd_new;
3588 adapter->rrd_ring = rrd_new;
3589 adapter->tpd_ring = tpd_new;
3590 adapter->ring_header = rhdr_new;
3591
3592 err = atl1_up(adapter);
3593 if (err)
3594 return err;
3595 }
3596 return 0;
3597
3598 err_setup_ring:
3599 adapter->rfd_ring = rfd_old;
3600 adapter->rrd_ring = rrd_old;
3601 adapter->tpd_ring = tpd_old;
3602 adapter->ring_header = rhdr_old;
3603 atl1_up(adapter);
3604 return err;
3605 }
3606
3607 static void atl1_get_pauseparam(struct net_device *netdev,
3608 struct ethtool_pauseparam *epause)
3609 {
3610 struct atl1_adapter *adapter = netdev_priv(netdev);
3611 struct atl1_hw *hw = &adapter->hw;
3612
3613 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3614 hw->media_type == MEDIA_TYPE_1000M_FULL) {
3615 epause->autoneg = AUTONEG_ENABLE;
3616 } else {
3617 epause->autoneg = AUTONEG_DISABLE;
3618 }
3619 epause->rx_pause = 1;
3620 epause->tx_pause = 1;
3621 }
3622
3623 static int atl1_set_pauseparam(struct net_device *netdev,
3624 struct ethtool_pauseparam *epause)
3625 {
3626 struct atl1_adapter *adapter = netdev_priv(netdev);
3627 struct atl1_hw *hw = &adapter->hw;
3628
3629 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3630 hw->media_type == MEDIA_TYPE_1000M_FULL) {
3631 epause->autoneg = AUTONEG_ENABLE;
3632 } else {
3633 epause->autoneg = AUTONEG_DISABLE;
3634 }
3635
3636 epause->rx_pause = 1;
3637 epause->tx_pause = 1;
3638
3639 return 0;
3640 }
3641
3642 /* FIXME: is this right? -- CHS */
3643 static u32 atl1_get_rx_csum(struct net_device *netdev)
3644 {
3645 return 1;
3646 }
3647
3648 static void atl1_get_strings(struct net_device *netdev, u32 stringset,
3649 u8 *data)
3650 {
3651 u8 *p = data;
3652 int i;
3653
3654 switch (stringset) {
3655 case ETH_SS_STATS:
3656 for (i = 0; i < ARRAY_SIZE(atl1_gstrings_stats); i++) {
3657 memcpy(p, atl1_gstrings_stats[i].stat_string,
3658 ETH_GSTRING_LEN);
3659 p += ETH_GSTRING_LEN;
3660 }
3661 break;
3662 }
3663 }
3664
3665 static int atl1_nway_reset(struct net_device *netdev)
3666 {
3667 struct atl1_adapter *adapter = netdev_priv(netdev);
3668 struct atl1_hw *hw = &adapter->hw;
3669
3670 if (netif_running(netdev)) {
3671 u16 phy_data;
3672 atl1_down(adapter);
3673
3674 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3675 hw->media_type == MEDIA_TYPE_1000M_FULL) {
3676 phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
3677 } else {
3678 switch (hw->media_type) {
3679 case MEDIA_TYPE_100M_FULL:
3680 phy_data = MII_CR_FULL_DUPLEX |
3681 MII_CR_SPEED_100 | MII_CR_RESET;
3682 break;
3683 case MEDIA_TYPE_100M_HALF:
3684 phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
3685 break;
3686 case MEDIA_TYPE_10M_FULL:
3687 phy_data = MII_CR_FULL_DUPLEX |
3688 MII_CR_SPEED_10 | MII_CR_RESET;
3689 break;
3690 default:
3691 /* MEDIA_TYPE_10M_HALF */
3692 phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
3693 }
3694 }
3695 atl1_write_phy_reg(hw, MII_BMCR, phy_data);
3696 atl1_up(adapter);
3697 }
3698 return 0;
3699 }
3700
3701 const struct ethtool_ops atl1_ethtool_ops = {
3702 .get_settings = atl1_get_settings,
3703 .set_settings = atl1_set_settings,
3704 .get_drvinfo = atl1_get_drvinfo,
3705 .get_wol = atl1_get_wol,
3706 .set_wol = atl1_set_wol,
3707 .get_msglevel = atl1_get_msglevel,
3708 .set_msglevel = atl1_set_msglevel,
3709 .get_regs_len = atl1_get_regs_len,
3710 .get_regs = atl1_get_regs,
3711 .get_ringparam = atl1_get_ringparam,
3712 .set_ringparam = atl1_set_ringparam,
3713 .get_pauseparam = atl1_get_pauseparam,
3714 .set_pauseparam = atl1_set_pauseparam,
3715 .get_rx_csum = atl1_get_rx_csum,
3716 .set_tx_csum = ethtool_op_set_tx_hw_csum,
3717 .get_link = ethtool_op_get_link,
3718 .set_sg = ethtool_op_set_sg,
3719 .get_strings = atl1_get_strings,
3720 .nway_reset = atl1_nway_reset,
3721 .get_ethtool_stats = atl1_get_ethtool_stats,
3722 .get_sset_count = atl1_get_sset_count,
3723 .set_tso = ethtool_op_set_tso,
3724 };
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