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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*******************************************************************************
2
Auke Kok0abb6eb2006-09-27 12:53:14 -07003 Intel PRO/100 Linux driver
4 Copyright(c) 1999 - 2006 Intel Corporation.
Jesse Brandeburg05479932006-01-17 15:01:10 -08005
6 This program is free software; you can redistribute it and/or modify it
Auke Kok0abb6eb2006-09-27 12:53:14 -07007 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
Jesse Brandeburg05479932006-01-17 15:01:10 -08009
Auke Kok0abb6eb2006-09-27 12:53:14 -070010 This program is distributed in the hope it will be useful, but WITHOUT
Jesse Brandeburg05479932006-01-17 15:01:10 -080011 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 more details.
Jesse Brandeburg05479932006-01-17 15:01:10 -080014
Linus Torvalds1da177e2005-04-16 15:20:36 -070015 You should have received a copy of the GNU General Public License along with
Auke Kok0abb6eb2006-09-27 12:53:14 -070016 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
Jesse Brandeburg05479932006-01-17 15:01:10 -080018
Auke Kok0abb6eb2006-09-27 12:53:14 -070019 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
Jesse Brandeburg05479932006-01-17 15:01:10 -080021
Linus Torvalds1da177e2005-04-16 15:20:36 -070022 Contact Information:
23 Linux NICS <linux.nics@intel.com>
Auke Kok0abb6eb2006-09-27 12:53:14 -070024 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
Linus Torvalds1da177e2005-04-16 15:20:36 -070025 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26
27*******************************************************************************/
28
29/*
30 * e100.c: Intel(R) PRO/100 ethernet driver
31 *
32 * (Re)written 2003 by scott.feldman@intel.com. Based loosely on
33 * original e100 driver, but better described as a munging of
34 * e100, e1000, eepro100, tg3, 8139cp, and other drivers.
35 *
36 * References:
37 * Intel 8255x 10/100 Mbps Ethernet Controller Family,
38 * Open Source Software Developers Manual,
39 * http://sourceforge.net/projects/e1000
40 *
41 *
42 * Theory of Operation
43 *
44 * I. General
45 *
46 * The driver supports Intel(R) 10/100 Mbps PCI Fast Ethernet
47 * controller family, which includes the 82557, 82558, 82559, 82550,
48 * 82551, and 82562 devices. 82558 and greater controllers
49 * integrate the Intel 82555 PHY. The controllers are used in
50 * server and client network interface cards, as well as in
51 * LAN-On-Motherboard (LOM), CardBus, MiniPCI, and ICHx
52 * configurations. 8255x supports a 32-bit linear addressing
53 * mode and operates at 33Mhz PCI clock rate.
54 *
55 * II. Driver Operation
56 *
57 * Memory-mapped mode is used exclusively to access the device's
58 * shared-memory structure, the Control/Status Registers (CSR). All
59 * setup, configuration, and control of the device, including queuing
60 * of Tx, Rx, and configuration commands is through the CSR.
61 * cmd_lock serializes accesses to the CSR command register. cb_lock
62 * protects the shared Command Block List (CBL).
63 *
64 * 8255x is highly MII-compliant and all access to the PHY go
65 * through the Management Data Interface (MDI). Consequently, the
66 * driver leverages the mii.c library shared with other MII-compliant
67 * devices.
68 *
69 * Big- and Little-Endian byte order as well as 32- and 64-bit
70 * archs are supported. Weak-ordered memory and non-cache-coherent
71 * archs are supported.
72 *
73 * III. Transmit
74 *
75 * A Tx skb is mapped and hangs off of a TCB. TCBs are linked
76 * together in a fixed-size ring (CBL) thus forming the flexible mode
77 * memory structure. A TCB marked with the suspend-bit indicates
78 * the end of the ring. The last TCB processed suspends the
79 * controller, and the controller can be restarted by issue a CU
80 * resume command to continue from the suspend point, or a CU start
81 * command to start at a given position in the ring.
82 *
83 * Non-Tx commands (config, multicast setup, etc) are linked
84 * into the CBL ring along with Tx commands. The common structure
85 * used for both Tx and non-Tx commands is the Command Block (CB).
86 *
87 * cb_to_use is the next CB to use for queuing a command; cb_to_clean
88 * is the next CB to check for completion; cb_to_send is the first
89 * CB to start on in case of a previous failure to resume. CB clean
90 * up happens in interrupt context in response to a CU interrupt.
91 * cbs_avail keeps track of number of free CB resources available.
92 *
93 * Hardware padding of short packets to minimum packet size is
94 * enabled. 82557 pads with 7Eh, while the later controllers pad
95 * with 00h.
96 *
Andreas Mohr0a0863a2008-02-01 08:21:39 -080097 * IV. Receive
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 *
99 * The Receive Frame Area (RFA) comprises a ring of Receive Frame
100 * Descriptors (RFD) + data buffer, thus forming the simplified mode
101 * memory structure. Rx skbs are allocated to contain both the RFD
102 * and the data buffer, but the RFD is pulled off before the skb is
103 * indicated. The data buffer is aligned such that encapsulated
104 * protocol headers are u32-aligned. Since the RFD is part of the
105 * mapped shared memory, and completion status is contained within
106 * the RFD, the RFD must be dma_sync'ed to maintain a consistent
107 * view from software and hardware.
108 *
David Acker7734f6e2007-11-08 10:17:41 -0800109 * In order to keep updates to the RFD link field from colliding with
110 * hardware writes to mark packets complete, we use the feature that
111 * hardware will not write to a size 0 descriptor and mark the previous
112 * packet as end-of-list (EL). After updating the link, we remove EL
113 * and only then restore the size such that hardware may use the
114 * previous-to-end RFD.
115 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116 * Under typical operation, the receive unit (RU) is start once,
117 * and the controller happily fills RFDs as frames arrive. If
118 * replacement RFDs cannot be allocated, or the RU goes non-active,
119 * the RU must be restarted. Frame arrival generates an interrupt,
120 * and Rx indication and re-allocation happen in the same context,
121 * therefore no locking is required. A software-generated interrupt
122 * is generated from the watchdog to recover from a failed allocation
Andreas Mohr0a0863a2008-02-01 08:21:39 -0800123 * scenario where all Rx resources have been indicated and none re-
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 * placed.
125 *
126 * V. Miscellaneous
127 *
128 * VLAN offloading of tagging, stripping and filtering is not
129 * supported, but driver will accommodate the extra 4-byte VLAN tag
130 * for processing by upper layers. Tx/Rx Checksum offloading is not
131 * supported. Tx Scatter/Gather is not supported. Jumbo Frames is
132 * not supported (hardware limitation).
133 *
134 * MagicPacket(tm) WoL support is enabled/disabled via ethtool.
135 *
136 * Thanks to JC (jchapman@katalix.com) for helping with
137 * testing/troubleshooting the development driver.
138 *
139 * TODO:
140 * o several entry points race with dev->close
141 * o check for tx-no-resources/stop Q races with tx clean/wake Q
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800142 *
143 * FIXES:
144 * 2005/12/02 - Michael O'Donnell <Michael.ODonnell at stratus dot com>
145 * - Stratus87247: protect MDI control register manipulations
Andreas Mohr72001762009-06-10 09:55:04 +0000146 * 2009/06/01 - Andreas Mohr <andi at lisas dot de>
147 * - add clean lowlevel I/O emulation for cards with MII-lacking PHYs
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 */
149
Joe Perchesfa05e1a2010-03-16 21:24:32 -0700150#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
151
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152#include <linux/module.h>
153#include <linux/moduleparam.h>
154#include <linux/kernel.h>
155#include <linux/types.h>
Alexey Dobriyand43c36d2009-10-07 17:09:06 +0400156#include <linux/sched.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157#include <linux/slab.h>
158#include <linux/delay.h>
159#include <linux/init.h>
160#include <linux/pci.h>
Domen Puncer1e7f0bd2005-06-26 18:22:14 -0400161#include <linux/dma-mapping.h>
Roger Oksanen98468ef2009-11-29 17:17:29 -0800162#include <linux/dmapool.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163#include <linux/netdevice.h>
164#include <linux/etherdevice.h>
165#include <linux/mii.h>
166#include <linux/if_vlan.h>
167#include <linux/skbuff.h>
168#include <linux/ethtool.h>
169#include <linux/string.h>
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -0800170#include <linux/firmware.h>
Alan Cox401da6a2010-04-24 21:09:29 -0700171#include <linux/rtnetlink.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172#include <asm/unaligned.h>
173
174
175#define DRV_NAME "e100"
Auke Kok4e1dc972006-08-16 11:28:35 -0700176#define DRV_EXT "-NAPI"
Bruce Allanb55de802009-03-21 13:25:25 -0700177#define DRV_VERSION "3.5.24-k2"DRV_EXT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178#define DRV_DESCRIPTION "Intel(R) PRO/100 Network Driver"
Auke Kok4e1dc972006-08-16 11:28:35 -0700179#define DRV_COPYRIGHT "Copyright(c) 1999-2006 Intel Corporation"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180
181#define E100_WATCHDOG_PERIOD (2 * HZ)
182#define E100_NAPI_WEIGHT 16
183
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -0800184#define FIRMWARE_D101M "e100/d101m_ucode.bin"
185#define FIRMWARE_D101S "e100/d101s_ucode.bin"
186#define FIRMWARE_D102E "e100/d102e_ucode.bin"
187
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188MODULE_DESCRIPTION(DRV_DESCRIPTION);
189MODULE_AUTHOR(DRV_COPYRIGHT);
190MODULE_LICENSE("GPL");
191MODULE_VERSION(DRV_VERSION);
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -0800192MODULE_FIRMWARE(FIRMWARE_D101M);
193MODULE_FIRMWARE(FIRMWARE_D101S);
194MODULE_FIRMWARE(FIRMWARE_D102E);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195
196static int debug = 3;
David S. Miller8fb6f732006-08-28 22:12:54 -0700197static int eeprom_bad_csum_allow = 0;
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700198static int use_io = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199module_param(debug, int, 0);
David S. Miller8fb6f732006-08-28 22:12:54 -0700200module_param(eeprom_bad_csum_allow, int, 0);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700201module_param(use_io, int, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
David S. Miller8fb6f732006-08-28 22:12:54 -0700203MODULE_PARM_DESC(eeprom_bad_csum_allow, "Allow bad eeprom checksums");
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700204MODULE_PARM_DESC(use_io, "Force use of i/o access mode");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205
206#define INTEL_8255X_ETHERNET_DEVICE(device_id, ich) {\
207 PCI_VENDOR_ID_INTEL, device_id, PCI_ANY_ID, PCI_ANY_ID, \
208 PCI_CLASS_NETWORK_ETHERNET << 8, 0xFFFF00, ich }
Alexey Dobriyana3aa1882010-01-07 11:58:11 +0000209static DEFINE_PCI_DEVICE_TABLE(e100_id_table) = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 INTEL_8255X_ETHERNET_DEVICE(0x1029, 0),
211 INTEL_8255X_ETHERNET_DEVICE(0x1030, 0),
212 INTEL_8255X_ETHERNET_DEVICE(0x1031, 3),
213 INTEL_8255X_ETHERNET_DEVICE(0x1032, 3),
214 INTEL_8255X_ETHERNET_DEVICE(0x1033, 3),
215 INTEL_8255X_ETHERNET_DEVICE(0x1034, 3),
216 INTEL_8255X_ETHERNET_DEVICE(0x1038, 3),
217 INTEL_8255X_ETHERNET_DEVICE(0x1039, 4),
218 INTEL_8255X_ETHERNET_DEVICE(0x103A, 4),
219 INTEL_8255X_ETHERNET_DEVICE(0x103B, 4),
220 INTEL_8255X_ETHERNET_DEVICE(0x103C, 4),
221 INTEL_8255X_ETHERNET_DEVICE(0x103D, 4),
222 INTEL_8255X_ETHERNET_DEVICE(0x103E, 4),
223 INTEL_8255X_ETHERNET_DEVICE(0x1050, 5),
224 INTEL_8255X_ETHERNET_DEVICE(0x1051, 5),
225 INTEL_8255X_ETHERNET_DEVICE(0x1052, 5),
226 INTEL_8255X_ETHERNET_DEVICE(0x1053, 5),
227 INTEL_8255X_ETHERNET_DEVICE(0x1054, 5),
228 INTEL_8255X_ETHERNET_DEVICE(0x1055, 5),
229 INTEL_8255X_ETHERNET_DEVICE(0x1056, 5),
230 INTEL_8255X_ETHERNET_DEVICE(0x1057, 5),
231 INTEL_8255X_ETHERNET_DEVICE(0x1059, 0),
232 INTEL_8255X_ETHERNET_DEVICE(0x1064, 6),
233 INTEL_8255X_ETHERNET_DEVICE(0x1065, 6),
234 INTEL_8255X_ETHERNET_DEVICE(0x1066, 6),
235 INTEL_8255X_ETHERNET_DEVICE(0x1067, 6),
236 INTEL_8255X_ETHERNET_DEVICE(0x1068, 6),
237 INTEL_8255X_ETHERNET_DEVICE(0x1069, 6),
238 INTEL_8255X_ETHERNET_DEVICE(0x106A, 6),
239 INTEL_8255X_ETHERNET_DEVICE(0x106B, 6),
Malli Chilakala042e2fb2005-04-28 19:20:14 -0700240 INTEL_8255X_ETHERNET_DEVICE(0x1091, 7),
241 INTEL_8255X_ETHERNET_DEVICE(0x1092, 7),
242 INTEL_8255X_ETHERNET_DEVICE(0x1093, 7),
243 INTEL_8255X_ETHERNET_DEVICE(0x1094, 7),
244 INTEL_8255X_ETHERNET_DEVICE(0x1095, 7),
Bruce Allanb55de802009-03-21 13:25:25 -0700245 INTEL_8255X_ETHERNET_DEVICE(0x10fe, 7),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246 INTEL_8255X_ETHERNET_DEVICE(0x1209, 0),
247 INTEL_8255X_ETHERNET_DEVICE(0x1229, 0),
248 INTEL_8255X_ETHERNET_DEVICE(0x2449, 2),
249 INTEL_8255X_ETHERNET_DEVICE(0x2459, 2),
250 INTEL_8255X_ETHERNET_DEVICE(0x245D, 2),
Malli Chilakala042e2fb2005-04-28 19:20:14 -0700251 INTEL_8255X_ETHERNET_DEVICE(0x27DC, 7),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252 { 0, }
253};
254MODULE_DEVICE_TABLE(pci, e100_id_table);
255
256enum mac {
257 mac_82557_D100_A = 0,
258 mac_82557_D100_B = 1,
259 mac_82557_D100_C = 2,
260 mac_82558_D101_A4 = 4,
261 mac_82558_D101_B0 = 5,
262 mac_82559_D101M = 8,
263 mac_82559_D101S = 9,
264 mac_82550_D102 = 12,
265 mac_82550_D102_C = 13,
266 mac_82551_E = 14,
267 mac_82551_F = 15,
268 mac_82551_10 = 16,
269 mac_unknown = 0xFF,
270};
271
272enum phy {
273 phy_100a = 0x000003E0,
274 phy_100c = 0x035002A8,
275 phy_82555_tx = 0x015002A8,
276 phy_nsc_tx = 0x5C002000,
277 phy_82562_et = 0x033002A8,
278 phy_82562_em = 0x032002A8,
279 phy_82562_ek = 0x031002A8,
280 phy_82562_eh = 0x017002A8,
Bruce Allanb55de802009-03-21 13:25:25 -0700281 phy_82552_v = 0xd061004d,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282 phy_unknown = 0xFFFFFFFF,
283};
284
285/* CSR (Control/Status Registers) */
286struct csr {
287 struct {
288 u8 status;
289 u8 stat_ack;
290 u8 cmd_lo;
291 u8 cmd_hi;
292 u32 gen_ptr;
293 } scb;
294 u32 port;
295 u16 flash_ctrl;
296 u8 eeprom_ctrl_lo;
297 u8 eeprom_ctrl_hi;
298 u32 mdi_ctrl;
299 u32 rx_dma_count;
300};
301
302enum scb_status {
David Acker7734f6e2007-11-08 10:17:41 -0800303 rus_no_res = 0x08,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304 rus_ready = 0x10,
305 rus_mask = 0x3C,
306};
307
Jeff Garzikca93ca42007-06-12 18:52:31 -0400308enum ru_state {
309 RU_SUSPENDED = 0,
310 RU_RUNNING = 1,
311 RU_UNINITIALIZED = -1,
312};
313
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314enum scb_stat_ack {
315 stat_ack_not_ours = 0x00,
316 stat_ack_sw_gen = 0x04,
317 stat_ack_rnr = 0x10,
318 stat_ack_cu_idle = 0x20,
319 stat_ack_frame_rx = 0x40,
320 stat_ack_cu_cmd_done = 0x80,
321 stat_ack_not_present = 0xFF,
322 stat_ack_rx = (stat_ack_sw_gen | stat_ack_rnr | stat_ack_frame_rx),
323 stat_ack_tx = (stat_ack_cu_idle | stat_ack_cu_cmd_done),
324};
325
326enum scb_cmd_hi {
327 irq_mask_none = 0x00,
328 irq_mask_all = 0x01,
329 irq_sw_gen = 0x02,
330};
331
332enum scb_cmd_lo {
333 cuc_nop = 0x00,
334 ruc_start = 0x01,
335 ruc_load_base = 0x06,
336 cuc_start = 0x10,
337 cuc_resume = 0x20,
338 cuc_dump_addr = 0x40,
339 cuc_dump_stats = 0x50,
340 cuc_load_base = 0x60,
341 cuc_dump_reset = 0x70,
342};
343
344enum cuc_dump {
345 cuc_dump_complete = 0x0000A005,
346 cuc_dump_reset_complete = 0x0000A007,
347};
Jesse Brandeburg05479932006-01-17 15:01:10 -0800348
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349enum port {
350 software_reset = 0x0000,
351 selftest = 0x0001,
352 selective_reset = 0x0002,
353};
354
355enum eeprom_ctrl_lo {
356 eesk = 0x01,
357 eecs = 0x02,
358 eedi = 0x04,
359 eedo = 0x08,
360};
361
362enum mdi_ctrl {
363 mdi_write = 0x04000000,
364 mdi_read = 0x08000000,
365 mdi_ready = 0x10000000,
366};
367
368enum eeprom_op {
369 op_write = 0x05,
370 op_read = 0x06,
371 op_ewds = 0x10,
372 op_ewen = 0x13,
373};
374
375enum eeprom_offsets {
376 eeprom_cnfg_mdix = 0x03,
Andreas Mohr72001762009-06-10 09:55:04 +0000377 eeprom_phy_iface = 0x06,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 eeprom_id = 0x0A,
379 eeprom_config_asf = 0x0D,
380 eeprom_smbus_addr = 0x90,
381};
382
383enum eeprom_cnfg_mdix {
384 eeprom_mdix_enabled = 0x0080,
385};
386
Andreas Mohr72001762009-06-10 09:55:04 +0000387enum eeprom_phy_iface {
388 NoSuchPhy = 0,
389 I82553AB,
390 I82553C,
391 I82503,
392 DP83840,
393 S80C240,
394 S80C24,
395 I82555,
396 DP83840A = 10,
397};
398
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399enum eeprom_id {
400 eeprom_id_wol = 0x0020,
401};
402
403enum eeprom_config_asf {
404 eeprom_asf = 0x8000,
405 eeprom_gcl = 0x4000,
406};
407
408enum cb_status {
409 cb_complete = 0x8000,
410 cb_ok = 0x2000,
411};
412
413enum cb_command {
414 cb_nop = 0x0000,
415 cb_iaaddr = 0x0001,
416 cb_config = 0x0002,
417 cb_multi = 0x0003,
418 cb_tx = 0x0004,
419 cb_ucode = 0x0005,
420 cb_dump = 0x0006,
421 cb_tx_sf = 0x0008,
422 cb_cid = 0x1f00,
423 cb_i = 0x2000,
424 cb_s = 0x4000,
425 cb_el = 0x8000,
426};
427
428struct rfd {
Al Viroaaf918b2007-12-10 18:32:49 +0000429 __le16 status;
430 __le16 command;
431 __le32 link;
432 __le32 rbd;
433 __le16 actual_size;
434 __le16 size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435};
436
437struct rx {
438 struct rx *next, *prev;
439 struct sk_buff *skb;
440 dma_addr_t dma_addr;
441};
442
443#if defined(__BIG_ENDIAN_BITFIELD)
444#define X(a,b) b,a
445#else
446#define X(a,b) a,b
447#endif
448struct config {
449/*0*/ u8 X(byte_count:6, pad0:2);
450/*1*/ u8 X(X(rx_fifo_limit:4, tx_fifo_limit:3), pad1:1);
451/*2*/ u8 adaptive_ifs;
452/*3*/ u8 X(X(X(X(mwi_enable:1, type_enable:1), read_align_enable:1),
453 term_write_cache_line:1), pad3:4);
454/*4*/ u8 X(rx_dma_max_count:7, pad4:1);
455/*5*/ u8 X(tx_dma_max_count:7, dma_max_count_enable:1);
456/*6*/ u8 X(X(X(X(X(X(X(late_scb_update:1, direct_rx_dma:1),
457 tno_intr:1), cna_intr:1), standard_tcb:1), standard_stat_counter:1),
458 rx_discard_overruns:1), rx_save_bad_frames:1);
459/*7*/ u8 X(X(X(X(X(rx_discard_short_frames:1, tx_underrun_retry:2),
460 pad7:2), rx_extended_rfd:1), tx_two_frames_in_fifo:1),
461 tx_dynamic_tbd:1);
462/*8*/ u8 X(X(mii_mode:1, pad8:6), csma_disabled:1);
463/*9*/ u8 X(X(X(X(X(rx_tcpudp_checksum:1, pad9:3), vlan_arp_tco:1),
464 link_status_wake:1), arp_wake:1), mcmatch_wake:1);
465/*10*/ u8 X(X(X(pad10:3, no_source_addr_insertion:1), preamble_length:2),
466 loopback:2);
467/*11*/ u8 X(linear_priority:3, pad11:5);
468/*12*/ u8 X(X(linear_priority_mode:1, pad12:3), ifs:4);
469/*13*/ u8 ip_addr_lo;
470/*14*/ u8 ip_addr_hi;
471/*15*/ u8 X(X(X(X(X(X(X(promiscuous_mode:1, broadcast_disabled:1),
472 wait_after_win:1), pad15_1:1), ignore_ul_bit:1), crc_16_bit:1),
473 pad15_2:1), crs_or_cdt:1);
474/*16*/ u8 fc_delay_lo;
475/*17*/ u8 fc_delay_hi;
476/*18*/ u8 X(X(X(X(X(rx_stripping:1, tx_padding:1), rx_crc_transfer:1),
477 rx_long_ok:1), fc_priority_threshold:3), pad18:1);
478/*19*/ u8 X(X(X(X(X(X(X(addr_wake:1, magic_packet_disable:1),
479 fc_disable:1), fc_restop:1), fc_restart:1), fc_reject:1),
480 full_duplex_force:1), full_duplex_pin:1);
481/*20*/ u8 X(X(X(pad20_1:5, fc_priority_location:1), multi_ia:1), pad20_2:1);
482/*21*/ u8 X(X(pad21_1:3, multicast_all:1), pad21_2:4);
483/*22*/ u8 X(X(rx_d102_mode:1, rx_vlan_drop:1), pad22:6);
484 u8 pad_d102[9];
485};
486
487#define E100_MAX_MULTICAST_ADDRS 64
488struct multi {
Al Viroaaf918b2007-12-10 18:32:49 +0000489 __le16 count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 u8 addr[E100_MAX_MULTICAST_ADDRS * ETH_ALEN + 2/*pad*/];
491};
492
493/* Important: keep total struct u32-aligned */
494#define UCODE_SIZE 134
495struct cb {
Al Viroaaf918b2007-12-10 18:32:49 +0000496 __le16 status;
497 __le16 command;
498 __le32 link;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499 union {
500 u8 iaaddr[ETH_ALEN];
Al Viroaaf918b2007-12-10 18:32:49 +0000501 __le32 ucode[UCODE_SIZE];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502 struct config config;
503 struct multi multi;
504 struct {
505 u32 tbd_array;
506 u16 tcb_byte_count;
507 u8 threshold;
508 u8 tbd_count;
509 struct {
Al Viroaaf918b2007-12-10 18:32:49 +0000510 __le32 buf_addr;
511 __le16 size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 u16 eol;
513 } tbd;
514 } tcb;
Al Viroaaf918b2007-12-10 18:32:49 +0000515 __le32 dump_buffer_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 } u;
517 struct cb *next, *prev;
518 dma_addr_t dma_addr;
519 struct sk_buff *skb;
520};
521
522enum loopback {
523 lb_none = 0, lb_mac = 1, lb_phy = 3,
524};
525
526struct stats {
Al Viroaaf918b2007-12-10 18:32:49 +0000527 __le32 tx_good_frames, tx_max_collisions, tx_late_collisions,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 tx_underruns, tx_lost_crs, tx_deferred, tx_single_collisions,
529 tx_multiple_collisions, tx_total_collisions;
Al Viroaaf918b2007-12-10 18:32:49 +0000530 __le32 rx_good_frames, rx_crc_errors, rx_alignment_errors,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 rx_resource_errors, rx_overrun_errors, rx_cdt_errors,
532 rx_short_frame_errors;
Al Viroaaf918b2007-12-10 18:32:49 +0000533 __le32 fc_xmt_pause, fc_rcv_pause, fc_rcv_unsupported;
534 __le16 xmt_tco_frames, rcv_tco_frames;
535 __le32 complete;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536};
537
538struct mem {
539 struct {
540 u32 signature;
541 u32 result;
542 } selftest;
543 struct stats stats;
544 u8 dump_buf[596];
545};
546
547struct param_range {
548 u32 min;
549 u32 max;
550 u32 count;
551};
552
553struct params {
554 struct param_range rfds;
555 struct param_range cbs;
556};
557
558struct nic {
559 /* Begin: frequently used values: keep adjacent for cache effect */
560 u32 msg_enable ____cacheline_aligned;
561 struct net_device *netdev;
562 struct pci_dev *pdev;
Andreas Mohr72001762009-06-10 09:55:04 +0000563 u16 (*mdio_ctrl)(struct nic *nic, u32 addr, u32 dir, u32 reg, u16 data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564
565 struct rx *rxs ____cacheline_aligned;
566 struct rx *rx_to_use;
567 struct rx *rx_to_clean;
568 struct rfd blank_rfd;
Jeff Garzikca93ca42007-06-12 18:52:31 -0400569 enum ru_state ru_running;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570
571 spinlock_t cb_lock ____cacheline_aligned;
572 spinlock_t cmd_lock;
573 struct csr __iomem *csr;
574 enum scb_cmd_lo cuc_cmd;
575 unsigned int cbs_avail;
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700576 struct napi_struct napi;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577 struct cb *cbs;
578 struct cb *cb_to_use;
579 struct cb *cb_to_send;
580 struct cb *cb_to_clean;
Al Viroaaf918b2007-12-10 18:32:49 +0000581 __le16 tx_command;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582 /* End: frequently used values: keep adjacent for cache effect */
583
584 enum {
585 ich = (1 << 0),
586 promiscuous = (1 << 1),
587 multicast_all = (1 << 2),
588 wol_magic = (1 << 3),
589 ich_10h_workaround = (1 << 4),
590 } flags ____cacheline_aligned;
591
592 enum mac mac;
593 enum phy phy;
594 struct params params;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595 struct timer_list watchdog;
596 struct timer_list blink_timer;
597 struct mii_if_info mii;
Malli Chilakala2acdb1e2005-04-28 19:16:58 -0700598 struct work_struct tx_timeout_task;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 enum loopback loopback;
600
601 struct mem *mem;
602 dma_addr_t dma_addr;
603
Roger Oksanen98468ef2009-11-29 17:17:29 -0800604 struct pci_pool *cbs_pool;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 dma_addr_t cbs_dma_addr;
606 u8 adaptive_ifs;
607 u8 tx_threshold;
608 u32 tx_frames;
609 u32 tx_collisions;
610 u32 tx_deferred;
611 u32 tx_single_collisions;
612 u32 tx_multiple_collisions;
613 u32 tx_fc_pause;
614 u32 tx_tco_frames;
615
616 u32 rx_fc_pause;
617 u32 rx_fc_unsupported;
618 u32 rx_tco_frames;
619 u32 rx_over_length_errors;
620
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621 u16 leds;
622 u16 eeprom_wc;
Al Viroaaf918b2007-12-10 18:32:49 +0000623 __le16 eeprom[256];
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800624 spinlock_t mdio_lock;
David Graham7e15b0c2009-10-28 04:13:57 -0700625 const struct firmware *fw;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626};
627
628static inline void e100_write_flush(struct nic *nic)
629{
630 /* Flush previous PCI writes through intermediate bridges
631 * by doing a benign read */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700632 (void)ioread8(&nic->csr->scb.status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700633}
634
Arjan van de Ven858119e2006-01-14 13:20:43 -0800635static void e100_enable_irq(struct nic *nic)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636{
637 unsigned long flags;
638
639 spin_lock_irqsave(&nic->cmd_lock, flags);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700640 iowrite8(irq_mask_none, &nic->csr->scb.cmd_hi);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641 e100_write_flush(nic);
Catalin(ux aka Dino) BOIEad8c48a2006-03-04 12:18:59 -0500642 spin_unlock_irqrestore(&nic->cmd_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643}
644
Arjan van de Ven858119e2006-01-14 13:20:43 -0800645static void e100_disable_irq(struct nic *nic)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646{
647 unsigned long flags;
648
649 spin_lock_irqsave(&nic->cmd_lock, flags);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700650 iowrite8(irq_mask_all, &nic->csr->scb.cmd_hi);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651 e100_write_flush(nic);
Catalin(ux aka Dino) BOIEad8c48a2006-03-04 12:18:59 -0500652 spin_unlock_irqrestore(&nic->cmd_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653}
654
655static void e100_hw_reset(struct nic *nic)
656{
657 /* Put CU and RU into idle with a selective reset to get
658 * device off of PCI bus */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700659 iowrite32(selective_reset, &nic->csr->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 e100_write_flush(nic); udelay(20);
661
662 /* Now fully reset device */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700663 iowrite32(software_reset, &nic->csr->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664 e100_write_flush(nic); udelay(20);
665
666 /* Mask off our interrupt line - it's unmasked after reset */
667 e100_disable_irq(nic);
668}
669
670static int e100_self_test(struct nic *nic)
671{
672 u32 dma_addr = nic->dma_addr + offsetof(struct mem, selftest);
673
674 /* Passing the self-test is a pretty good indication
675 * that the device can DMA to/from host memory */
676
677 nic->mem->selftest.signature = 0;
678 nic->mem->selftest.result = 0xFFFFFFFF;
679
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700680 iowrite32(selftest | dma_addr, &nic->csr->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 e100_write_flush(nic);
682 /* Wait 10 msec for self-test to complete */
683 msleep(10);
684
685 /* Interrupts are enabled after self-test */
686 e100_disable_irq(nic);
687
688 /* Check results of self-test */
Bruce Allanf26251e2009-01-04 17:12:04 -0800689 if (nic->mem->selftest.result != 0) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -0700690 netif_err(nic, hw, nic->netdev,
691 "Self-test failed: result=0x%08X\n",
692 nic->mem->selftest.result);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700693 return -ETIMEDOUT;
694 }
Bruce Allanf26251e2009-01-04 17:12:04 -0800695 if (nic->mem->selftest.signature == 0) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -0700696 netif_err(nic, hw, nic->netdev, "Self-test failed: timed out\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697 return -ETIMEDOUT;
698 }
699
700 return 0;
701}
702
Al Viroaaf918b2007-12-10 18:32:49 +0000703static void e100_eeprom_write(struct nic *nic, u16 addr_len, u16 addr, __le16 data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700704{
705 u32 cmd_addr_data[3];
706 u8 ctrl;
707 int i, j;
708
709 /* Three cmds: write/erase enable, write data, write/erase disable */
710 cmd_addr_data[0] = op_ewen << (addr_len - 2);
711 cmd_addr_data[1] = (((op_write << addr_len) | addr) << 16) |
Al Viroaaf918b2007-12-10 18:32:49 +0000712 le16_to_cpu(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713 cmd_addr_data[2] = op_ewds << (addr_len - 2);
714
715 /* Bit-bang cmds to write word to eeprom */
Bruce Allanf26251e2009-01-04 17:12:04 -0800716 for (j = 0; j < 3; j++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717
718 /* Chip select */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700719 iowrite8(eecs | eesk, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720 e100_write_flush(nic); udelay(4);
721
Bruce Allanf26251e2009-01-04 17:12:04 -0800722 for (i = 31; i >= 0; i--) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723 ctrl = (cmd_addr_data[j] & (1 << i)) ?
724 eecs | eedi : eecs;
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700725 iowrite8(ctrl, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726 e100_write_flush(nic); udelay(4);
727
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700728 iowrite8(ctrl | eesk, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729 e100_write_flush(nic); udelay(4);
730 }
731 /* Wait 10 msec for cmd to complete */
732 msleep(10);
733
734 /* Chip deselect */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700735 iowrite8(0, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736 e100_write_flush(nic); udelay(4);
737 }
738};
739
740/* General technique stolen from the eepro100 driver - very clever */
Al Viroaaf918b2007-12-10 18:32:49 +0000741static __le16 e100_eeprom_read(struct nic *nic, u16 *addr_len, u16 addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700742{
743 u32 cmd_addr_data;
744 u16 data = 0;
745 u8 ctrl;
746 int i;
747
748 cmd_addr_data = ((op_read << *addr_len) | addr) << 16;
749
750 /* Chip select */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700751 iowrite8(eecs | eesk, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752 e100_write_flush(nic); udelay(4);
753
754 /* Bit-bang to read word from eeprom */
Bruce Allanf26251e2009-01-04 17:12:04 -0800755 for (i = 31; i >= 0; i--) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756 ctrl = (cmd_addr_data & (1 << i)) ? eecs | eedi : eecs;
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700757 iowrite8(ctrl, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700758 e100_write_flush(nic); udelay(4);
Jesse Brandeburg05479932006-01-17 15:01:10 -0800759
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700760 iowrite8(ctrl | eesk, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761 e100_write_flush(nic); udelay(4);
Jesse Brandeburg05479932006-01-17 15:01:10 -0800762
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763 /* Eeprom drives a dummy zero to EEDO after receiving
764 * complete address. Use this to adjust addr_len. */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700765 ctrl = ioread8(&nic->csr->eeprom_ctrl_lo);
Bruce Allanf26251e2009-01-04 17:12:04 -0800766 if (!(ctrl & eedo) && i > 16) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767 *addr_len -= (i - 16);
768 i = 17;
769 }
Jesse Brandeburg05479932006-01-17 15:01:10 -0800770
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771 data = (data << 1) | (ctrl & eedo ? 1 : 0);
772 }
773
774 /* Chip deselect */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700775 iowrite8(0, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776 e100_write_flush(nic); udelay(4);
777
Al Viroaaf918b2007-12-10 18:32:49 +0000778 return cpu_to_le16(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700779};
780
781/* Load entire EEPROM image into driver cache and validate checksum */
782static int e100_eeprom_load(struct nic *nic)
783{
784 u16 addr, addr_len = 8, checksum = 0;
785
786 /* Try reading with an 8-bit addr len to discover actual addr len */
787 e100_eeprom_read(nic, &addr_len, 0);
788 nic->eeprom_wc = 1 << addr_len;
789
Bruce Allanf26251e2009-01-04 17:12:04 -0800790 for (addr = 0; addr < nic->eeprom_wc; addr++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791 nic->eeprom[addr] = e100_eeprom_read(nic, &addr_len, addr);
Bruce Allanf26251e2009-01-04 17:12:04 -0800792 if (addr < nic->eeprom_wc - 1)
Al Viroaaf918b2007-12-10 18:32:49 +0000793 checksum += le16_to_cpu(nic->eeprom[addr]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794 }
795
796 /* The checksum, stored in the last word, is calculated such that
797 * the sum of words should be 0xBABA */
Al Viroaaf918b2007-12-10 18:32:49 +0000798 if (cpu_to_le16(0xBABA - checksum) != nic->eeprom[nic->eeprom_wc - 1]) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -0700799 netif_err(nic, probe, nic->netdev, "EEPROM corrupted\n");
David S. Miller8fb6f732006-08-28 22:12:54 -0700800 if (!eeprom_bad_csum_allow)
801 return -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802 }
803
804 return 0;
805}
806
807/* Save (portion of) driver EEPROM cache to device and update checksum */
808static int e100_eeprom_save(struct nic *nic, u16 start, u16 count)
809{
810 u16 addr, addr_len = 8, checksum = 0;
811
812 /* Try reading with an 8-bit addr len to discover actual addr len */
813 e100_eeprom_read(nic, &addr_len, 0);
814 nic->eeprom_wc = 1 << addr_len;
815
Bruce Allanf26251e2009-01-04 17:12:04 -0800816 if (start + count >= nic->eeprom_wc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817 return -EINVAL;
818
Bruce Allanf26251e2009-01-04 17:12:04 -0800819 for (addr = start; addr < start + count; addr++)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 e100_eeprom_write(nic, addr_len, addr, nic->eeprom[addr]);
821
822 /* The checksum, stored in the last word, is calculated such that
823 * the sum of words should be 0xBABA */
Bruce Allanf26251e2009-01-04 17:12:04 -0800824 for (addr = 0; addr < nic->eeprom_wc - 1; addr++)
Al Viroaaf918b2007-12-10 18:32:49 +0000825 checksum += le16_to_cpu(nic->eeprom[addr]);
826 nic->eeprom[nic->eeprom_wc - 1] = cpu_to_le16(0xBABA - checksum);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827 e100_eeprom_write(nic, addr_len, nic->eeprom_wc - 1,
828 nic->eeprom[nic->eeprom_wc - 1]);
829
830 return 0;
831}
832
Malli Chilakala962082b2005-04-28 19:19:46 -0700833#define E100_WAIT_SCB_TIMEOUT 20000 /* we might have to wait 100ms!!! */
Malli Chilakalae6280f22005-08-25 13:06:23 -0700834#define E100_WAIT_SCB_FAST 20 /* delay like the old code */
Arjan van de Ven858119e2006-01-14 13:20:43 -0800835static int e100_exec_cmd(struct nic *nic, u8 cmd, dma_addr_t dma_addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700836{
837 unsigned long flags;
838 unsigned int i;
839 int err = 0;
840
841 spin_lock_irqsave(&nic->cmd_lock, flags);
842
843 /* Previous command is accepted when SCB clears */
Bruce Allanf26251e2009-01-04 17:12:04 -0800844 for (i = 0; i < E100_WAIT_SCB_TIMEOUT; i++) {
845 if (likely(!ioread8(&nic->csr->scb.cmd_lo)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846 break;
847 cpu_relax();
Bruce Allanf26251e2009-01-04 17:12:04 -0800848 if (unlikely(i > E100_WAIT_SCB_FAST))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849 udelay(5);
850 }
Bruce Allanf26251e2009-01-04 17:12:04 -0800851 if (unlikely(i == E100_WAIT_SCB_TIMEOUT)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852 err = -EAGAIN;
853 goto err_unlock;
854 }
855
Bruce Allanf26251e2009-01-04 17:12:04 -0800856 if (unlikely(cmd != cuc_resume))
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700857 iowrite32(dma_addr, &nic->csr->scb.gen_ptr);
858 iowrite8(cmd, &nic->csr->scb.cmd_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700859
860err_unlock:
861 spin_unlock_irqrestore(&nic->cmd_lock, flags);
862
863 return err;
864}
865
Arjan van de Ven858119e2006-01-14 13:20:43 -0800866static int e100_exec_cb(struct nic *nic, struct sk_buff *skb,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867 void (*cb_prepare)(struct nic *, struct cb *, struct sk_buff *))
868{
869 struct cb *cb;
870 unsigned long flags;
871 int err = 0;
872
873 spin_lock_irqsave(&nic->cb_lock, flags);
874
Bruce Allanf26251e2009-01-04 17:12:04 -0800875 if (unlikely(!nic->cbs_avail)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876 err = -ENOMEM;
877 goto err_unlock;
878 }
879
880 cb = nic->cb_to_use;
881 nic->cb_to_use = cb->next;
882 nic->cbs_avail--;
883 cb->skb = skb;
884
Bruce Allanf26251e2009-01-04 17:12:04 -0800885 if (unlikely(!nic->cbs_avail))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886 err = -ENOSPC;
887
888 cb_prepare(nic, cb, skb);
889
890 /* Order is important otherwise we'll be in a race with h/w:
891 * set S-bit in current first, then clear S-bit in previous. */
892 cb->command |= cpu_to_le16(cb_s);
893 wmb();
894 cb->prev->command &= cpu_to_le16(~cb_s);
895
Bruce Allanf26251e2009-01-04 17:12:04 -0800896 while (nic->cb_to_send != nic->cb_to_use) {
897 if (unlikely(e100_exec_cmd(nic, nic->cuc_cmd,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898 nic->cb_to_send->dma_addr))) {
899 /* Ok, here's where things get sticky. It's
900 * possible that we can't schedule the command
901 * because the controller is too busy, so
902 * let's just queue the command and try again
903 * when another command is scheduled. */
Bruce Allanf26251e2009-01-04 17:12:04 -0800904 if (err == -ENOSPC) {
Malli Chilakala962082b2005-04-28 19:19:46 -0700905 //request a reset
906 schedule_work(&nic->tx_timeout_task);
907 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908 break;
909 } else {
910 nic->cuc_cmd = cuc_resume;
911 nic->cb_to_send = nic->cb_to_send->next;
912 }
913 }
914
915err_unlock:
916 spin_unlock_irqrestore(&nic->cb_lock, flags);
917
918 return err;
919}
920
Andreas Mohr72001762009-06-10 09:55:04 +0000921static int mdio_read(struct net_device *netdev, int addr, int reg)
922{
923 struct nic *nic = netdev_priv(netdev);
924 return nic->mdio_ctrl(nic, addr, mdi_read, reg, 0);
925}
926
927static void mdio_write(struct net_device *netdev, int addr, int reg, int data)
928{
929 struct nic *nic = netdev_priv(netdev);
930
931 nic->mdio_ctrl(nic, addr, mdi_write, reg, data);
932}
933
934/* the standard mdio_ctrl() function for usual MII-compliant hardware */
935static u16 mdio_ctrl_hw(struct nic *nic, u32 addr, u32 dir, u32 reg, u16 data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936{
937 u32 data_out = 0;
938 unsigned int i;
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800939 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700940
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800941
942 /*
943 * Stratus87247: we shouldn't be writing the MDI control
944 * register until the Ready bit shows True. Also, since
945 * manipulation of the MDI control registers is a multi-step
946 * procedure it should be done under lock.
947 */
948 spin_lock_irqsave(&nic->mdio_lock, flags);
949 for (i = 100; i; --i) {
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700950 if (ioread32(&nic->csr->mdi_ctrl) & mdi_ready)
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800951 break;
952 udelay(20);
953 }
954 if (unlikely(!i)) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -0700955 netdev_err(nic->netdev, "e100.mdio_ctrl won't go Ready\n");
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800956 spin_unlock_irqrestore(&nic->mdio_lock, flags);
957 return 0; /* No way to indicate timeout error */
958 }
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700959 iowrite32((reg << 16) | (addr << 21) | dir | data, &nic->csr->mdi_ctrl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700960
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800961 for (i = 0; i < 100; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962 udelay(20);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700963 if ((data_out = ioread32(&nic->csr->mdi_ctrl)) & mdi_ready)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700964 break;
965 }
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800966 spin_unlock_irqrestore(&nic->mdio_lock, flags);
Joe Perchesfa05e1a2010-03-16 21:24:32 -0700967 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
968 "%s:addr=%d, reg=%d, data_in=0x%04X, data_out=0x%04X\n",
969 dir == mdi_read ? "READ" : "WRITE",
970 addr, reg, data, data_out);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971 return (u16)data_out;
972}
973
Andreas Mohr72001762009-06-10 09:55:04 +0000974/* slightly tweaked mdio_ctrl() function for phy_82552_v specifics */
975static u16 mdio_ctrl_phy_82552_v(struct nic *nic,
976 u32 addr,
977 u32 dir,
978 u32 reg,
979 u16 data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980{
Andreas Mohr72001762009-06-10 09:55:04 +0000981 if ((reg == MII_BMCR) && (dir == mdi_write)) {
982 if (data & (BMCR_ANRESTART | BMCR_ANENABLE)) {
983 u16 advert = mdio_read(nic->netdev, nic->mii.phy_id,
984 MII_ADVERTISE);
985
986 /*
987 * Workaround Si issue where sometimes the part will not
988 * autoneg to 100Mbps even when advertised.
989 */
990 if (advert & ADVERTISE_100FULL)
991 data |= BMCR_SPEED100 | BMCR_FULLDPLX;
992 else if (advert & ADVERTISE_100HALF)
993 data |= BMCR_SPEED100;
994 }
995 }
996 return mdio_ctrl_hw(nic, addr, dir, reg, data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997}
998
Andreas Mohr72001762009-06-10 09:55:04 +0000999/* Fully software-emulated mdio_ctrl() function for cards without
1000 * MII-compliant PHYs.
1001 * For now, this is mainly geared towards 80c24 support; in case of further
1002 * requirements for other types (i82503, ...?) either extend this mechanism
1003 * or split it, whichever is cleaner.
1004 */
1005static u16 mdio_ctrl_phy_mii_emulated(struct nic *nic,
1006 u32 addr,
1007 u32 dir,
1008 u32 reg,
1009 u16 data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010{
Andreas Mohr72001762009-06-10 09:55:04 +00001011 /* might need to allocate a netdev_priv'ed register array eventually
1012 * to be able to record state changes, but for now
1013 * some fully hardcoded register handling ought to be ok I guess. */
Bruce Allanb55de802009-03-21 13:25:25 -07001014
Andreas Mohr72001762009-06-10 09:55:04 +00001015 if (dir == mdi_read) {
1016 switch (reg) {
1017 case MII_BMCR:
1018 /* Auto-negotiation, right? */
1019 return BMCR_ANENABLE |
1020 BMCR_FULLDPLX;
1021 case MII_BMSR:
1022 return BMSR_LSTATUS /* for mii_link_ok() */ |
1023 BMSR_ANEGCAPABLE |
1024 BMSR_10FULL;
1025 case MII_ADVERTISE:
1026 /* 80c24 is a "combo card" PHY, right? */
1027 return ADVERTISE_10HALF |
1028 ADVERTISE_10FULL;
1029 default:
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001030 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
1031 "%s:addr=%d, reg=%d, data=0x%04X: unimplemented emulation!\n",
1032 dir == mdi_read ? "READ" : "WRITE",
1033 addr, reg, data);
Andreas Mohr72001762009-06-10 09:55:04 +00001034 return 0xFFFF;
1035 }
1036 } else {
1037 switch (reg) {
1038 default:
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001039 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
1040 "%s:addr=%d, reg=%d, data=0x%04X: unimplemented emulation!\n",
1041 dir == mdi_read ? "READ" : "WRITE",
1042 addr, reg, data);
Andreas Mohr72001762009-06-10 09:55:04 +00001043 return 0xFFFF;
1044 }
Bruce Allanb55de802009-03-21 13:25:25 -07001045 }
Andreas Mohr72001762009-06-10 09:55:04 +00001046}
1047static inline int e100_phy_supports_mii(struct nic *nic)
1048{
1049 /* for now, just check it by comparing whether we
1050 are using MII software emulation.
1051 */
1052 return (nic->mdio_ctrl != mdio_ctrl_phy_mii_emulated);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001053}
1054
1055static void e100_get_defaults(struct nic *nic)
1056{
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001057 struct param_range rfds = { .min = 16, .max = 256, .count = 256 };
1058 struct param_range cbs = { .min = 64, .max = 256, .count = 128 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059
Linus Torvalds1da177e2005-04-16 15:20:36 -07001060 /* MAC type is encoded as rev ID; exception: ICH is treated as 82559 */
Auke Kok44c10132007-06-08 15:46:36 -07001061 nic->mac = (nic->flags & ich) ? mac_82559_D101M : nic->pdev->revision;
Bruce Allanf26251e2009-01-04 17:12:04 -08001062 if (nic->mac == mac_unknown)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063 nic->mac = mac_82557_D100_A;
1064
1065 nic->params.rfds = rfds;
1066 nic->params.cbs = cbs;
1067
1068 /* Quadwords to DMA into FIFO before starting frame transmit */
1069 nic->tx_threshold = 0xE0;
1070
Andreas Mohr0a0863a2008-02-01 08:21:39 -08001071 /* no interrupt for every tx completion, delay = 256us if not 557 */
Malli Chilakala962082b2005-04-28 19:19:46 -07001072 nic->tx_command = cpu_to_le16(cb_tx | cb_tx_sf |
1073 ((nic->mac >= mac_82558_D101_A4) ? cb_cid : cb_i));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001074
1075 /* Template for a freshly allocated RFD */
David Acker7734f6e2007-11-08 10:17:41 -08001076 nic->blank_rfd.command = 0;
Al Viro11728992008-03-16 22:21:44 +00001077 nic->blank_rfd.rbd = cpu_to_le32(0xFFFFFFFF);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001078 nic->blank_rfd.size = cpu_to_le16(VLAN_ETH_FRAME_LEN);
1079
1080 /* MII setup */
1081 nic->mii.phy_id_mask = 0x1F;
1082 nic->mii.reg_num_mask = 0x1F;
1083 nic->mii.dev = nic->netdev;
1084 nic->mii.mdio_read = mdio_read;
1085 nic->mii.mdio_write = mdio_write;
1086}
1087
1088static void e100_configure(struct nic *nic, struct cb *cb, struct sk_buff *skb)
1089{
1090 struct config *config = &cb->u.config;
1091 u8 *c = (u8 *)config;
1092
1093 cb->command = cpu_to_le16(cb_config);
1094
1095 memset(config, 0, sizeof(struct config));
1096
1097 config->byte_count = 0x16; /* bytes in this struct */
1098 config->rx_fifo_limit = 0x8; /* bytes in FIFO before DMA */
1099 config->direct_rx_dma = 0x1; /* reserved */
1100 config->standard_tcb = 0x1; /* 1=standard, 0=extended */
1101 config->standard_stat_counter = 0x1; /* 1=standard, 0=extended */
1102 config->rx_discard_short_frames = 0x1; /* 1=discard, 0=pass */
1103 config->tx_underrun_retry = 0x3; /* # of underrun retries */
Andreas Mohr72001762009-06-10 09:55:04 +00001104 if (e100_phy_supports_mii(nic))
1105 config->mii_mode = 1; /* 1=MII mode, 0=i82503 mode */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001106 config->pad10 = 0x6;
1107 config->no_source_addr_insertion = 0x1; /* 1=no, 0=yes */
1108 config->preamble_length = 0x2; /* 0=1, 1=3, 2=7, 3=15 bytes */
1109 config->ifs = 0x6; /* x16 = inter frame spacing */
1110 config->ip_addr_hi = 0xF2; /* ARP IP filter - not used */
1111 config->pad15_1 = 0x1;
1112 config->pad15_2 = 0x1;
1113 config->crs_or_cdt = 0x0; /* 0=CRS only, 1=CRS or CDT */
1114 config->fc_delay_hi = 0x40; /* time delay for fc frame */
1115 config->tx_padding = 0x1; /* 1=pad short frames */
1116 config->fc_priority_threshold = 0x7; /* 7=priority fc disabled */
1117 config->pad18 = 0x1;
1118 config->full_duplex_pin = 0x1; /* 1=examine FDX# pin */
1119 config->pad20_1 = 0x1F;
1120 config->fc_priority_location = 0x1; /* 1=byte#31, 0=byte#19 */
1121 config->pad21_1 = 0x5;
1122
1123 config->adaptive_ifs = nic->adaptive_ifs;
1124 config->loopback = nic->loopback;
1125
Bruce Allanf26251e2009-01-04 17:12:04 -08001126 if (nic->mii.force_media && nic->mii.full_duplex)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001127 config->full_duplex_force = 0x1; /* 1=force, 0=auto */
1128
Bruce Allanf26251e2009-01-04 17:12:04 -08001129 if (nic->flags & promiscuous || nic->loopback) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001130 config->rx_save_bad_frames = 0x1; /* 1=save, 0=discard */
1131 config->rx_discard_short_frames = 0x0; /* 1=discard, 0=save */
1132 config->promiscuous_mode = 0x1; /* 1=on, 0=off */
1133 }
1134
Bruce Allanf26251e2009-01-04 17:12:04 -08001135 if (nic->flags & multicast_all)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001136 config->multicast_all = 0x1; /* 1=accept, 0=no */
1137
Malli Chilakala6bdacb12005-04-28 19:17:54 -07001138 /* disable WoL when up */
Bruce Allanf26251e2009-01-04 17:12:04 -08001139 if (netif_running(nic->netdev) || !(nic->flags & wol_magic))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001140 config->magic_packet_disable = 0x1; /* 1=off, 0=on */
1141
Bruce Allanf26251e2009-01-04 17:12:04 -08001142 if (nic->mac >= mac_82558_D101_A4) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001143 config->fc_disable = 0x1; /* 1=Tx fc off, 0=Tx fc on */
1144 config->mwi_enable = 0x1; /* 1=enable, 0=disable */
1145 config->standard_tcb = 0x0; /* 1=standard, 0=extended */
1146 config->rx_long_ok = 0x1; /* 1=VLANs ok, 0=standard */
David Graham44e49252007-07-10 08:45:11 -07001147 if (nic->mac >= mac_82559_D101M) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001148 config->tno_intr = 0x1; /* TCO stats enable */
David Graham44e49252007-07-10 08:45:11 -07001149 /* Enable TCO in extended config */
1150 if (nic->mac >= mac_82551_10) {
1151 config->byte_count = 0x20; /* extended bytes */
1152 config->rx_d102_mode = 0x1; /* GMRC for TCO */
1153 }
1154 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001155 config->standard_stat_counter = 0x0;
David Graham44e49252007-07-10 08:45:11 -07001156 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001157 }
1158
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001159 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
1160 "[00-07]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
1161 c[0], c[1], c[2], c[3], c[4], c[5], c[6], c[7]);
1162 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
1163 "[08-15]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
1164 c[8], c[9], c[10], c[11], c[12], c[13], c[14], c[15]);
1165 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
1166 "[16-23]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
1167 c[16], c[17], c[18], c[19], c[20], c[21], c[22], c[23]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001168}
1169
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001170/*************************************************************************
1171* CPUSaver parameters
1172*
1173* All CPUSaver parameters are 16-bit literals that are part of a
1174* "move immediate value" instruction. By changing the value of
1175* the literal in the instruction before the code is loaded, the
1176* driver can change the algorithm.
1177*
Matt LaPlante0779bf22006-11-30 05:24:39 +01001178* INTDELAY - This loads the dead-man timer with its initial value.
Jesse Brandeburg05479932006-01-17 15:01:10 -08001179* When this timer expires the interrupt is asserted, and the
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001180* timer is reset each time a new packet is received. (see
1181* BUNDLEMAX below to set the limit on number of chained packets)
1182* The current default is 0x600 or 1536. Experiments show that
1183* the value should probably stay within the 0x200 - 0x1000.
1184*
Jesse Brandeburg05479932006-01-17 15:01:10 -08001185* BUNDLEMAX -
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001186* This sets the maximum number of frames that will be bundled. In
1187* some situations, such as the TCP windowing algorithm, it may be
1188* better to limit the growth of the bundle size than let it go as
1189* high as it can, because that could cause too much added latency.
1190* The default is six, because this is the number of packets in the
1191* default TCP window size. A value of 1 would make CPUSaver indicate
1192* an interrupt for every frame received. If you do not want to put
1193* a limit on the bundle size, set this value to xFFFF.
1194*
Jesse Brandeburg05479932006-01-17 15:01:10 -08001195* BUNDLESMALL -
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001196* This contains a bit-mask describing the minimum size frame that
1197* will be bundled. The default masks the lower 7 bits, which means
1198* that any frame less than 128 bytes in length will not be bundled,
1199* but will instead immediately generate an interrupt. This does
1200* not affect the current bundle in any way. Any frame that is 128
1201* bytes or large will be bundled normally. This feature is meant
1202* to provide immediate indication of ACK frames in a TCP environment.
1203* Customers were seeing poor performance when a machine with CPUSaver
1204* enabled was sending but not receiving. The delay introduced when
1205* the ACKs were received was enough to reduce total throughput, because
1206* the sender would sit idle until the ACK was finally seen.
1207*
1208* The current default is 0xFF80, which masks out the lower 7 bits.
1209* This means that any frame which is x7F (127) bytes or smaller
Jesse Brandeburg05479932006-01-17 15:01:10 -08001210* will cause an immediate interrupt. Because this value must be a
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001211* bit mask, there are only a few valid values that can be used. To
1212* turn this feature off, the driver can write the value xFFFF to the
1213* lower word of this instruction (in the same way that the other
1214* parameters are used). Likewise, a value of 0xF800 (2047) would
1215* cause an interrupt to be generated for every frame, because all
1216* standard Ethernet frames are <= 2047 bytes in length.
1217*************************************************************************/
1218
Jesse Brandeburg05479932006-01-17 15:01:10 -08001219/* if you wish to disable the ucode functionality, while maintaining the
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001220 * workarounds it provides, set the following defines to:
1221 * BUNDLESMALL 0
1222 * BUNDLEMAX 1
1223 * INTDELAY 1
1224 */
1225#define BUNDLESMALL 1
1226#define BUNDLEMAX (u16)6
1227#define INTDELAY (u16)1536 /* 0x600 */
1228
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001229/* Initialize firmware */
1230static const struct firmware *e100_request_firmware(struct nic *nic)
1231{
1232 const char *fw_name;
David Graham7e15b0c2009-10-28 04:13:57 -07001233 const struct firmware *fw = nic->fw;
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001234 u8 timer, bundle, min_size;
David Graham7e15b0c2009-10-28 04:13:57 -07001235 int err = 0;
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001236
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001237 /* do not load u-code for ICH devices */
1238 if (nic->flags & ich)
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001239 return NULL;
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001240
Auke Kok44c10132007-06-08 15:46:36 -07001241 /* Search for ucode match against h/w revision */
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001242 if (nic->mac == mac_82559_D101M)
1243 fw_name = FIRMWARE_D101M;
1244 else if (nic->mac == mac_82559_D101S)
1245 fw_name = FIRMWARE_D101S;
1246 else if (nic->mac == mac_82551_F || nic->mac == mac_82551_10)
1247 fw_name = FIRMWARE_D102E;
1248 else /* No ucode on other devices */
1249 return NULL;
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001250
David Graham7e15b0c2009-10-28 04:13:57 -07001251 /* If the firmware has not previously been loaded, request a pointer
1252 * to it. If it was previously loaded, we are reinitializing the
1253 * adapter, possibly in a resume from hibernate, in which case
1254 * request_firmware() cannot be used.
1255 */
1256 if (!fw)
1257 err = request_firmware(&fw, fw_name, &nic->pdev->dev);
1258
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001259 if (err) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001260 netif_err(nic, probe, nic->netdev,
1261 "Failed to load firmware \"%s\": %d\n",
1262 fw_name, err);
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001263 return ERR_PTR(err);
1264 }
David Graham7e15b0c2009-10-28 04:13:57 -07001265
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001266 /* Firmware should be precisely UCODE_SIZE (words) plus three bytes
1267 indicating the offsets for BUNDLESMALL, BUNDLEMAX, INTDELAY */
1268 if (fw->size != UCODE_SIZE * 4 + 3) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001269 netif_err(nic, probe, nic->netdev,
1270 "Firmware \"%s\" has wrong size %zu\n",
1271 fw_name, fw->size);
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001272 release_firmware(fw);
1273 return ERR_PTR(-EINVAL);
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001274 }
1275
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001276 /* Read timer, bundle and min_size from end of firmware blob */
1277 timer = fw->data[UCODE_SIZE * 4];
1278 bundle = fw->data[UCODE_SIZE * 4 + 1];
1279 min_size = fw->data[UCODE_SIZE * 4 + 2];
1280
1281 if (timer >= UCODE_SIZE || bundle >= UCODE_SIZE ||
1282 min_size >= UCODE_SIZE) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001283 netif_err(nic, probe, nic->netdev,
1284 "\"%s\" has bogus offset values (0x%x,0x%x,0x%x)\n",
1285 fw_name, timer, bundle, min_size);
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001286 release_firmware(fw);
1287 return ERR_PTR(-EINVAL);
1288 }
David Graham7e15b0c2009-10-28 04:13:57 -07001289
1290 /* OK, firmware is validated and ready to use. Save a pointer
1291 * to it in the nic */
1292 nic->fw = fw;
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001293 return fw;
Jesse Brandeburg24180332006-01-17 15:01:06 -08001294}
1295
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001296static void e100_setup_ucode(struct nic *nic, struct cb *cb,
1297 struct sk_buff *skb)
Jesse Brandeburg24180332006-01-17 15:01:06 -08001298{
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001299 const struct firmware *fw = (void *)skb;
1300 u8 timer, bundle, min_size;
1301
1302 /* It's not a real skb; we just abused the fact that e100_exec_cb
1303 will pass it through to here... */
1304 cb->skb = NULL;
1305
1306 /* firmware is stored as little endian already */
1307 memcpy(cb->u.ucode, fw->data, UCODE_SIZE * 4);
1308
1309 /* Read timer, bundle and min_size from end of firmware blob */
1310 timer = fw->data[UCODE_SIZE * 4];
1311 bundle = fw->data[UCODE_SIZE * 4 + 1];
1312 min_size = fw->data[UCODE_SIZE * 4 + 2];
1313
1314 /* Insert user-tunable settings in cb->u.ucode */
1315 cb->u.ucode[timer] &= cpu_to_le32(0xFFFF0000);
1316 cb->u.ucode[timer] |= cpu_to_le32(INTDELAY);
1317 cb->u.ucode[bundle] &= cpu_to_le32(0xFFFF0000);
1318 cb->u.ucode[bundle] |= cpu_to_le32(BUNDLEMAX);
1319 cb->u.ucode[min_size] &= cpu_to_le32(0xFFFF0000);
1320 cb->u.ucode[min_size] |= cpu_to_le32((BUNDLESMALL) ? 0xFFFF : 0xFF80);
1321
1322 cb->command = cpu_to_le16(cb_ucode | cb_el);
1323}
1324
1325static inline int e100_load_ucode_wait(struct nic *nic)
1326{
1327 const struct firmware *fw;
Jesse Brandeburg24180332006-01-17 15:01:06 -08001328 int err = 0, counter = 50;
1329 struct cb *cb = nic->cb_to_clean;
1330
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001331 fw = e100_request_firmware(nic);
1332 /* If it's NULL, then no ucode is required */
1333 if (!fw || IS_ERR(fw))
1334 return PTR_ERR(fw);
1335
1336 if ((err = e100_exec_cb(nic, (void *)fw, e100_setup_ucode)))
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001337 netif_err(nic, probe, nic->netdev,
1338 "ucode cmd failed with error %d\n", err);
Jesse Brandeburg05479932006-01-17 15:01:10 -08001339
Jesse Brandeburg24180332006-01-17 15:01:06 -08001340 /* must restart cuc */
1341 nic->cuc_cmd = cuc_start;
1342
1343 /* wait for completion */
1344 e100_write_flush(nic);
1345 udelay(10);
1346
1347 /* wait for possibly (ouch) 500ms */
1348 while (!(cb->status & cpu_to_le16(cb_complete))) {
1349 msleep(10);
1350 if (!--counter) break;
1351 }
Jesse Brandeburg05479932006-01-17 15:01:10 -08001352
Robert P. J. Day3a4fa0a2007-10-19 23:10:43 +02001353 /* ack any interrupts, something could have been set */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07001354 iowrite8(~0, &nic->csr->scb.stat_ack);
Jesse Brandeburg24180332006-01-17 15:01:06 -08001355
1356 /* if the command failed, or is not OK, notify and return */
1357 if (!counter || !(cb->status & cpu_to_le16(cb_ok))) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001358 netif_err(nic, probe, nic->netdev, "ucode load failed\n");
Jesse Brandeburg24180332006-01-17 15:01:06 -08001359 err = -EPERM;
1360 }
Jesse Brandeburg05479932006-01-17 15:01:10 -08001361
Jesse Brandeburg24180332006-01-17 15:01:06 -08001362 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001363}
1364
1365static void e100_setup_iaaddr(struct nic *nic, struct cb *cb,
1366 struct sk_buff *skb)
1367{
1368 cb->command = cpu_to_le16(cb_iaaddr);
1369 memcpy(cb->u.iaaddr, nic->netdev->dev_addr, ETH_ALEN);
1370}
1371
1372static void e100_dump(struct nic *nic, struct cb *cb, struct sk_buff *skb)
1373{
1374 cb->command = cpu_to_le16(cb_dump);
1375 cb->u.dump_buffer_addr = cpu_to_le32(nic->dma_addr +
1376 offsetof(struct mem, dump_buf));
1377}
1378
Andreas Mohr72001762009-06-10 09:55:04 +00001379static int e100_phy_check_without_mii(struct nic *nic)
1380{
1381 u8 phy_type;
1382 int without_mii;
1383
1384 phy_type = (nic->eeprom[eeprom_phy_iface] >> 8) & 0x0f;
1385
1386 switch (phy_type) {
1387 case NoSuchPhy: /* Non-MII PHY; UNTESTED! */
1388 case I82503: /* Non-MII PHY; UNTESTED! */
1389 case S80C24: /* Non-MII PHY; tested and working */
1390 /* paragraph from the FreeBSD driver, "FXP_PHY_80C24":
1391 * The Seeq 80c24 AutoDUPLEX(tm) Ethernet Interface Adapter
1392 * doesn't have a programming interface of any sort. The
1393 * media is sensed automatically based on how the link partner
1394 * is configured. This is, in essence, manual configuration.
1395 */
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001396 netif_info(nic, probe, nic->netdev,
1397 "found MII-less i82503 or 80c24 or other PHY\n");
Andreas Mohr72001762009-06-10 09:55:04 +00001398
1399 nic->mdio_ctrl = mdio_ctrl_phy_mii_emulated;
1400 nic->mii.phy_id = 0; /* is this ok for an MII-less PHY? */
1401
1402 /* these might be needed for certain MII-less cards...
1403 * nic->flags |= ich;
1404 * nic->flags |= ich_10h_workaround; */
1405
1406 without_mii = 1;
1407 break;
1408 default:
1409 without_mii = 0;
1410 break;
1411 }
1412 return without_mii;
1413}
1414
Linus Torvalds1da177e2005-04-16 15:20:36 -07001415#define NCONFIG_AUTO_SWITCH 0x0080
1416#define MII_NSC_CONG MII_RESV1
1417#define NSC_CONG_ENABLE 0x0100
1418#define NSC_CONG_TXREADY 0x0400
1419#define ADVERTISE_FC_SUPPORTED 0x0400
1420static int e100_phy_init(struct nic *nic)
1421{
1422 struct net_device *netdev = nic->netdev;
1423 u32 addr;
1424 u16 bmcr, stat, id_lo, id_hi, cong;
1425
1426 /* Discover phy addr by searching addrs in order {1,0,2,..., 31} */
Bruce Allanf26251e2009-01-04 17:12:04 -08001427 for (addr = 0; addr < 32; addr++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001428 nic->mii.phy_id = (addr == 0) ? 1 : (addr == 1) ? 0 : addr;
1429 bmcr = mdio_read(netdev, nic->mii.phy_id, MII_BMCR);
1430 stat = mdio_read(netdev, nic->mii.phy_id, MII_BMSR);
1431 stat = mdio_read(netdev, nic->mii.phy_id, MII_BMSR);
Bruce Allanf26251e2009-01-04 17:12:04 -08001432 if (!((bmcr == 0xFFFF) || ((stat == 0) && (bmcr == 0))))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001433 break;
1434 }
Andreas Mohr72001762009-06-10 09:55:04 +00001435 if (addr == 32) {
1436 /* uhoh, no PHY detected: check whether we seem to be some
1437 * weird, rare variant which is *known* to not have any MII.
1438 * But do this AFTER MII checking only, since this does
1439 * lookup of EEPROM values which may easily be unreliable. */
1440 if (e100_phy_check_without_mii(nic))
1441 return 0; /* simply return and hope for the best */
1442 else {
1443 /* for unknown cases log a fatal error */
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001444 netif_err(nic, hw, nic->netdev,
1445 "Failed to locate any known PHY, aborting\n");
Andreas Mohr72001762009-06-10 09:55:04 +00001446 return -EAGAIN;
1447 }
1448 } else
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001449 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
1450 "phy_addr = %d\n", nic->mii.phy_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001451
Linus Torvalds1da177e2005-04-16 15:20:36 -07001452 /* Get phy ID */
1453 id_lo = mdio_read(netdev, nic->mii.phy_id, MII_PHYSID1);
1454 id_hi = mdio_read(netdev, nic->mii.phy_id, MII_PHYSID2);
1455 nic->phy = (u32)id_hi << 16 | (u32)id_lo;
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001456 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
1457 "phy ID = 0x%08X\n", nic->phy);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001458
Bruce Allan8fbd962e2009-10-29 13:42:41 +00001459 /* Select the phy and isolate the rest */
1460 for (addr = 0; addr < 32; addr++) {
1461 if (addr != nic->mii.phy_id) {
1462 mdio_write(netdev, addr, MII_BMCR, BMCR_ISOLATE);
1463 } else if (nic->phy != phy_82552_v) {
1464 bmcr = mdio_read(netdev, addr, MII_BMCR);
1465 mdio_write(netdev, addr, MII_BMCR,
1466 bmcr & ~BMCR_ISOLATE);
1467 }
1468 }
1469 /*
1470 * Workaround for 82552:
1471 * Clear the ISOLATE bit on selected phy_id last (mirrored on all
1472 * other phy_id's) using bmcr value from addr discovery loop above.
1473 */
1474 if (nic->phy == phy_82552_v)
1475 mdio_write(netdev, nic->mii.phy_id, MII_BMCR,
1476 bmcr & ~BMCR_ISOLATE);
1477
Linus Torvalds1da177e2005-04-16 15:20:36 -07001478 /* Handle National tx phys */
1479#define NCS_PHY_MODEL_MASK 0xFFF0FFFF
Bruce Allanf26251e2009-01-04 17:12:04 -08001480 if ((nic->phy & NCS_PHY_MODEL_MASK) == phy_nsc_tx) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001481 /* Disable congestion control */
1482 cong = mdio_read(netdev, nic->mii.phy_id, MII_NSC_CONG);
1483 cong |= NSC_CONG_TXREADY;
1484 cong &= ~NSC_CONG_ENABLE;
1485 mdio_write(netdev, nic->mii.phy_id, MII_NSC_CONG, cong);
1486 }
1487
Bruce Allanb55de802009-03-21 13:25:25 -07001488 if (nic->phy == phy_82552_v) {
1489 u16 advert = mdio_read(netdev, nic->mii.phy_id, MII_ADVERTISE);
1490
Andreas Mohr72001762009-06-10 09:55:04 +00001491 /* assign special tweaked mdio_ctrl() function */
1492 nic->mdio_ctrl = mdio_ctrl_phy_82552_v;
1493
Bruce Allanb55de802009-03-21 13:25:25 -07001494 /* Workaround Si not advertising flow-control during autoneg */
1495 advert |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
1496 mdio_write(netdev, nic->mii.phy_id, MII_ADVERTISE, advert);
1497
1498 /* Reset for the above changes to take effect */
1499 bmcr = mdio_read(netdev, nic->mii.phy_id, MII_BMCR);
1500 bmcr |= BMCR_RESET;
1501 mdio_write(netdev, nic->mii.phy_id, MII_BMCR, bmcr);
1502 } else if ((nic->mac >= mac_82550_D102) || ((nic->flags & ich) &&
Jeff Kirsher60ffa472006-08-16 11:28:14 -07001503 (mdio_read(netdev, nic->mii.phy_id, MII_TPISTATUS) & 0x8000) &&
1504 !(nic->eeprom[eeprom_cnfg_mdix] & eeprom_mdix_enabled))) {
1505 /* enable/disable MDI/MDI-X auto-switching. */
1506 mdio_write(netdev, nic->mii.phy_id, MII_NCONFIG,
1507 nic->mii.force_media ? 0 : NCONFIG_AUTO_SWITCH);
Malli Chilakala64895142005-06-17 17:27:41 -07001508 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001509
1510 return 0;
1511}
1512
1513static int e100_hw_init(struct nic *nic)
1514{
1515 int err;
1516
1517 e100_hw_reset(nic);
1518
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001519 netif_err(nic, hw, nic->netdev, "e100_hw_init\n");
Bruce Allanf26251e2009-01-04 17:12:04 -08001520 if (!in_interrupt() && (err = e100_self_test(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001521 return err;
1522
Bruce Allanf26251e2009-01-04 17:12:04 -08001523 if ((err = e100_phy_init(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001524 return err;
Bruce Allanf26251e2009-01-04 17:12:04 -08001525 if ((err = e100_exec_cmd(nic, cuc_load_base, 0)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001526 return err;
Bruce Allanf26251e2009-01-04 17:12:04 -08001527 if ((err = e100_exec_cmd(nic, ruc_load_base, 0)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001528 return err;
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001529 if ((err = e100_load_ucode_wait(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001530 return err;
Bruce Allanf26251e2009-01-04 17:12:04 -08001531 if ((err = e100_exec_cb(nic, NULL, e100_configure)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001532 return err;
Bruce Allanf26251e2009-01-04 17:12:04 -08001533 if ((err = e100_exec_cb(nic, NULL, e100_setup_iaaddr)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001534 return err;
Bruce Allanf26251e2009-01-04 17:12:04 -08001535 if ((err = e100_exec_cmd(nic, cuc_dump_addr,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001536 nic->dma_addr + offsetof(struct mem, stats))))
1537 return err;
Bruce Allanf26251e2009-01-04 17:12:04 -08001538 if ((err = e100_exec_cmd(nic, cuc_dump_reset, 0)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001539 return err;
1540
1541 e100_disable_irq(nic);
1542
1543 return 0;
1544}
1545
1546static void e100_multi(struct nic *nic, struct cb *cb, struct sk_buff *skb)
1547{
1548 struct net_device *netdev = nic->netdev;
Jiri Pirko22bedad32010-04-01 21:22:57 +00001549 struct netdev_hw_addr *ha;
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00001550 u16 i, count = min(netdev_mc_count(netdev), E100_MAX_MULTICAST_ADDRS);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001551
1552 cb->command = cpu_to_le16(cb_multi);
1553 cb->u.multi.count = cpu_to_le16(count * ETH_ALEN);
Jiri Pirko48e2f182010-02-22 09:22:26 +00001554 i = 0;
Jiri Pirko22bedad32010-04-01 21:22:57 +00001555 netdev_for_each_mc_addr(ha, netdev) {
Jiri Pirko48e2f182010-02-22 09:22:26 +00001556 if (i == count)
1557 break;
Jiri Pirko22bedad32010-04-01 21:22:57 +00001558 memcpy(&cb->u.multi.addr[i++ * ETH_ALEN], &ha->addr,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001559 ETH_ALEN);
Jiri Pirko48e2f182010-02-22 09:22:26 +00001560 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001561}
1562
1563static void e100_set_multicast_list(struct net_device *netdev)
1564{
1565 struct nic *nic = netdev_priv(netdev);
1566
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001567 netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
1568 "mc_count=%d, flags=0x%04X\n",
1569 netdev_mc_count(netdev), netdev->flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001570
Bruce Allanf26251e2009-01-04 17:12:04 -08001571 if (netdev->flags & IFF_PROMISC)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001572 nic->flags |= promiscuous;
1573 else
1574 nic->flags &= ~promiscuous;
1575
Bruce Allanf26251e2009-01-04 17:12:04 -08001576 if (netdev->flags & IFF_ALLMULTI ||
Jiri Pirko4cd24ea2010-02-08 04:30:35 +00001577 netdev_mc_count(netdev) > E100_MAX_MULTICAST_ADDRS)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001578 nic->flags |= multicast_all;
1579 else
1580 nic->flags &= ~multicast_all;
1581
1582 e100_exec_cb(nic, NULL, e100_configure);
1583 e100_exec_cb(nic, NULL, e100_multi);
1584}
1585
1586static void e100_update_stats(struct nic *nic)
1587{
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001588 struct net_device *dev = nic->netdev;
1589 struct net_device_stats *ns = &dev->stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001590 struct stats *s = &nic->mem->stats;
Al Viroaaf918b2007-12-10 18:32:49 +00001591 __le32 *complete = (nic->mac < mac_82558_D101_A4) ? &s->fc_xmt_pause :
1592 (nic->mac < mac_82559_D101M) ? (__le32 *)&s->xmt_tco_frames :
Linus Torvalds1da177e2005-04-16 15:20:36 -07001593 &s->complete;
1594
1595 /* Device's stats reporting may take several microseconds to
Andreas Mohr0a0863a2008-02-01 08:21:39 -08001596 * complete, so we're always waiting for results of the
Linus Torvalds1da177e2005-04-16 15:20:36 -07001597 * previous command. */
1598
Bruce Allanf26251e2009-01-04 17:12:04 -08001599 if (*complete == cpu_to_le32(cuc_dump_reset_complete)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001600 *complete = 0;
1601 nic->tx_frames = le32_to_cpu(s->tx_good_frames);
1602 nic->tx_collisions = le32_to_cpu(s->tx_total_collisions);
1603 ns->tx_aborted_errors += le32_to_cpu(s->tx_max_collisions);
1604 ns->tx_window_errors += le32_to_cpu(s->tx_late_collisions);
1605 ns->tx_carrier_errors += le32_to_cpu(s->tx_lost_crs);
1606 ns->tx_fifo_errors += le32_to_cpu(s->tx_underruns);
1607 ns->collisions += nic->tx_collisions;
1608 ns->tx_errors += le32_to_cpu(s->tx_max_collisions) +
1609 le32_to_cpu(s->tx_lost_crs);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001610 ns->rx_length_errors += le32_to_cpu(s->rx_short_frame_errors) +
1611 nic->rx_over_length_errors;
1612 ns->rx_crc_errors += le32_to_cpu(s->rx_crc_errors);
1613 ns->rx_frame_errors += le32_to_cpu(s->rx_alignment_errors);
1614 ns->rx_over_errors += le32_to_cpu(s->rx_overrun_errors);
1615 ns->rx_fifo_errors += le32_to_cpu(s->rx_overrun_errors);
John W. Linvilleecf71302005-09-12 10:48:59 -04001616 ns->rx_missed_errors += le32_to_cpu(s->rx_resource_errors);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001617 ns->rx_errors += le32_to_cpu(s->rx_crc_errors) +
1618 le32_to_cpu(s->rx_alignment_errors) +
1619 le32_to_cpu(s->rx_short_frame_errors) +
1620 le32_to_cpu(s->rx_cdt_errors);
1621 nic->tx_deferred += le32_to_cpu(s->tx_deferred);
1622 nic->tx_single_collisions +=
1623 le32_to_cpu(s->tx_single_collisions);
1624 nic->tx_multiple_collisions +=
1625 le32_to_cpu(s->tx_multiple_collisions);
Bruce Allanf26251e2009-01-04 17:12:04 -08001626 if (nic->mac >= mac_82558_D101_A4) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001627 nic->tx_fc_pause += le32_to_cpu(s->fc_xmt_pause);
1628 nic->rx_fc_pause += le32_to_cpu(s->fc_rcv_pause);
1629 nic->rx_fc_unsupported +=
1630 le32_to_cpu(s->fc_rcv_unsupported);
Bruce Allanf26251e2009-01-04 17:12:04 -08001631 if (nic->mac >= mac_82559_D101M) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001632 nic->tx_tco_frames +=
1633 le16_to_cpu(s->xmt_tco_frames);
1634 nic->rx_tco_frames +=
1635 le16_to_cpu(s->rcv_tco_frames);
1636 }
1637 }
1638 }
1639
Jesse Brandeburg05479932006-01-17 15:01:10 -08001640
Bruce Allanf26251e2009-01-04 17:12:04 -08001641 if (e100_exec_cmd(nic, cuc_dump_reset, 0))
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001642 netif_printk(nic, tx_err, KERN_DEBUG, nic->netdev,
1643 "exec cuc_dump_reset failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001644}
1645
1646static void e100_adjust_adaptive_ifs(struct nic *nic, int speed, int duplex)
1647{
1648 /* Adjust inter-frame-spacing (IFS) between two transmits if
1649 * we're getting collisions on a half-duplex connection. */
1650
Bruce Allanf26251e2009-01-04 17:12:04 -08001651 if (duplex == DUPLEX_HALF) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001652 u32 prev = nic->adaptive_ifs;
1653 u32 min_frames = (speed == SPEED_100) ? 1000 : 100;
1654
Bruce Allanf26251e2009-01-04 17:12:04 -08001655 if ((nic->tx_frames / 32 < nic->tx_collisions) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07001656 (nic->tx_frames > min_frames)) {
Bruce Allanf26251e2009-01-04 17:12:04 -08001657 if (nic->adaptive_ifs < 60)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001658 nic->adaptive_ifs += 5;
1659 } else if (nic->tx_frames < min_frames) {
Bruce Allanf26251e2009-01-04 17:12:04 -08001660 if (nic->adaptive_ifs >= 5)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001661 nic->adaptive_ifs -= 5;
1662 }
Bruce Allanf26251e2009-01-04 17:12:04 -08001663 if (nic->adaptive_ifs != prev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001664 e100_exec_cb(nic, NULL, e100_configure);
1665 }
1666}
1667
1668static void e100_watchdog(unsigned long data)
1669{
1670 struct nic *nic = (struct nic *)data;
1671 struct ethtool_cmd cmd;
1672
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001673 netif_printk(nic, timer, KERN_DEBUG, nic->netdev,
1674 "right now = %ld\n", jiffies);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001675
1676 /* mii library handles link maintenance tasks */
1677
1678 mii_ethtool_gset(&nic->mii, &cmd);
1679
Bruce Allanf26251e2009-01-04 17:12:04 -08001680 if (mii_link_ok(&nic->mii) && !netif_carrier_ok(nic->netdev)) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001681 netdev_info(nic->netdev, "NIC Link is Up %u Mbps %s Duplex\n",
1682 cmd.speed == SPEED_100 ? 100 : 10,
1683 cmd.duplex == DUPLEX_FULL ? "Full" : "Half");
Bruce Allanf26251e2009-01-04 17:12:04 -08001684 } else if (!mii_link_ok(&nic->mii) && netif_carrier_ok(nic->netdev)) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001685 netdev_info(nic->netdev, "NIC Link is Down\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001686 }
1687
1688 mii_check_link(&nic->mii);
1689
1690 /* Software generated interrupt to recover from (rare) Rx
Jesse Brandeburg05479932006-01-17 15:01:10 -08001691 * allocation failure.
1692 * Unfortunately have to use a spinlock to not re-enable interrupts
1693 * accidentally, due to hardware that shares a register between the
1694 * interrupt mask bit and the SW Interrupt generation bit */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001695 spin_lock_irq(&nic->cmd_lock);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07001696 iowrite8(ioread8(&nic->csr->scb.cmd_hi) | irq_sw_gen,&nic->csr->scb.cmd_hi);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001697 e100_write_flush(nic);
Catalin(ux aka Dino) BOIEad8c48a2006-03-04 12:18:59 -05001698 spin_unlock_irq(&nic->cmd_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001699
1700 e100_update_stats(nic);
1701 e100_adjust_adaptive_ifs(nic, cmd.speed, cmd.duplex);
1702
Bruce Allanf26251e2009-01-04 17:12:04 -08001703 if (nic->mac <= mac_82557_D100_C)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001704 /* Issue a multicast command to workaround a 557 lock up */
1705 e100_set_multicast_list(nic->netdev);
1706
Bruce Allanf26251e2009-01-04 17:12:04 -08001707 if (nic->flags & ich && cmd.speed==SPEED_10 && cmd.duplex==DUPLEX_HALF)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001708 /* Need SW workaround for ICH[x] 10Mbps/half duplex Tx hang. */
1709 nic->flags |= ich_10h_workaround;
1710 else
1711 nic->flags &= ~ich_10h_workaround;
1712
Stephen Hemminger34c64172007-09-06 11:51:37 -07001713 mod_timer(&nic->watchdog,
1714 round_jiffies(jiffies + E100_WATCHDOG_PERIOD));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001715}
1716
Arjan van de Ven858119e2006-01-14 13:20:43 -08001717static void e100_xmit_prepare(struct nic *nic, struct cb *cb,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001718 struct sk_buff *skb)
1719{
1720 cb->command = nic->tx_command;
Malli Chilakala962082b2005-04-28 19:19:46 -07001721 /* interrupt every 16 packets regardless of delay */
Bruce Allanf26251e2009-01-04 17:12:04 -08001722 if ((nic->cbs_avail & ~15) == nic->cbs_avail)
Malli Chilakala996ec352005-08-25 13:06:08 -07001723 cb->command |= cpu_to_le16(cb_i);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001724 cb->u.tcb.tbd_array = cb->dma_addr + offsetof(struct cb, u.tcb.tbd);
1725 cb->u.tcb.tcb_byte_count = 0;
1726 cb->u.tcb.threshold = nic->tx_threshold;
1727 cb->u.tcb.tbd_count = 1;
1728 cb->u.tcb.tbd.buf_addr = cpu_to_le32(pci_map_single(nic->pdev,
1729 skb->data, skb->len, PCI_DMA_TODEVICE));
Malli Chilakala611494d2005-08-25 13:06:52 -07001730 /* check for mapping failure? */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001731 cb->u.tcb.tbd.size = cpu_to_le16(skb->len);
1732}
1733
Stephen Hemminger3b29a562009-08-31 19:50:55 +00001734static netdev_tx_t e100_xmit_frame(struct sk_buff *skb,
1735 struct net_device *netdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001736{
1737 struct nic *nic = netdev_priv(netdev);
1738 int err;
1739
Bruce Allanf26251e2009-01-04 17:12:04 -08001740 if (nic->flags & ich_10h_workaround) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001741 /* SW workaround for ICH[x] 10Mbps/half duplex Tx hang.
1742 Issue a NOP command followed by a 1us delay before
1743 issuing the Tx command. */
Bruce Allanf26251e2009-01-04 17:12:04 -08001744 if (e100_exec_cmd(nic, cuc_nop, 0))
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001745 netif_printk(nic, tx_err, KERN_DEBUG, nic->netdev,
1746 "exec cuc_nop failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001747 udelay(1);
1748 }
1749
1750 err = e100_exec_cb(nic, skb, e100_xmit_prepare);
1751
Bruce Allanf26251e2009-01-04 17:12:04 -08001752 switch (err) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001753 case -ENOSPC:
1754 /* We queued the skb, but now we're out of space. */
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001755 netif_printk(nic, tx_err, KERN_DEBUG, nic->netdev,
1756 "No space for CB\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001757 netif_stop_queue(netdev);
1758 break;
1759 case -ENOMEM:
1760 /* This is a hard error - log it. */
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001761 netif_printk(nic, tx_err, KERN_DEBUG, nic->netdev,
1762 "Out of Tx resources, returning skb\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001763 netif_stop_queue(netdev);
Patrick McHardy5b548142009-06-12 06:22:29 +00001764 return NETDEV_TX_BUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001765 }
1766
Patrick McHardy6ed10652009-06-23 06:03:08 +00001767 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001768}
1769
Arjan van de Ven858119e2006-01-14 13:20:43 -08001770static int e100_tx_clean(struct nic *nic)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001771{
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001772 struct net_device *dev = nic->netdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001773 struct cb *cb;
1774 int tx_cleaned = 0;
1775
1776 spin_lock(&nic->cb_lock);
1777
Linus Torvalds1da177e2005-04-16 15:20:36 -07001778 /* Clean CBs marked complete */
Bruce Allanf26251e2009-01-04 17:12:04 -08001779 for (cb = nic->cb_to_clean;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001780 cb->status & cpu_to_le16(cb_complete);
1781 cb = nic->cb_to_clean = cb->next) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001782 netif_printk(nic, tx_done, KERN_DEBUG, nic->netdev,
1783 "cb[%d]->status = 0x%04X\n",
1784 (int)(((void*)cb - (void*)nic->cbs)/sizeof(struct cb)),
1785 cb->status);
Jesse Brandeburgdc450102006-09-27 12:53:22 -07001786
Bruce Allanf26251e2009-01-04 17:12:04 -08001787 if (likely(cb->skb != NULL)) {
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001788 dev->stats.tx_packets++;
1789 dev->stats.tx_bytes += cb->skb->len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001790
1791 pci_unmap_single(nic->pdev,
1792 le32_to_cpu(cb->u.tcb.tbd.buf_addr),
1793 le16_to_cpu(cb->u.tcb.tbd.size),
1794 PCI_DMA_TODEVICE);
1795 dev_kfree_skb_any(cb->skb);
1796 cb->skb = NULL;
1797 tx_cleaned = 1;
1798 }
1799 cb->status = 0;
1800 nic->cbs_avail++;
1801 }
1802
1803 spin_unlock(&nic->cb_lock);
1804
1805 /* Recover from running out of Tx resources in xmit_frame */
Bruce Allanf26251e2009-01-04 17:12:04 -08001806 if (unlikely(tx_cleaned && netif_queue_stopped(nic->netdev)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001807 netif_wake_queue(nic->netdev);
1808
1809 return tx_cleaned;
1810}
1811
1812static void e100_clean_cbs(struct nic *nic)
1813{
Bruce Allanf26251e2009-01-04 17:12:04 -08001814 if (nic->cbs) {
1815 while (nic->cbs_avail != nic->params.cbs.count) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001816 struct cb *cb = nic->cb_to_clean;
Bruce Allanf26251e2009-01-04 17:12:04 -08001817 if (cb->skb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001818 pci_unmap_single(nic->pdev,
1819 le32_to_cpu(cb->u.tcb.tbd.buf_addr),
1820 le16_to_cpu(cb->u.tcb.tbd.size),
1821 PCI_DMA_TODEVICE);
1822 dev_kfree_skb(cb->skb);
1823 }
1824 nic->cb_to_clean = nic->cb_to_clean->next;
1825 nic->cbs_avail++;
1826 }
Roger Oksanen98468ef2009-11-29 17:17:29 -08001827 pci_pool_free(nic->cbs_pool, nic->cbs, nic->cbs_dma_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001828 nic->cbs = NULL;
1829 nic->cbs_avail = 0;
1830 }
1831 nic->cuc_cmd = cuc_start;
1832 nic->cb_to_use = nic->cb_to_send = nic->cb_to_clean =
1833 nic->cbs;
1834}
1835
1836static int e100_alloc_cbs(struct nic *nic)
1837{
1838 struct cb *cb;
1839 unsigned int i, count = nic->params.cbs.count;
1840
1841 nic->cuc_cmd = cuc_start;
1842 nic->cb_to_use = nic->cb_to_send = nic->cb_to_clean = NULL;
1843 nic->cbs_avail = 0;
1844
Roger Oksanen98468ef2009-11-29 17:17:29 -08001845 nic->cbs = pci_pool_alloc(nic->cbs_pool, GFP_KERNEL,
1846 &nic->cbs_dma_addr);
Bruce Allanf26251e2009-01-04 17:12:04 -08001847 if (!nic->cbs)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001848 return -ENOMEM;
Roger Oksanen70abc8c2009-12-18 20:18:21 -08001849 memset(nic->cbs, 0, count * sizeof(struct cb));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001850
Bruce Allanf26251e2009-01-04 17:12:04 -08001851 for (cb = nic->cbs, i = 0; i < count; cb++, i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001852 cb->next = (i + 1 < count) ? cb + 1 : nic->cbs;
1853 cb->prev = (i == 0) ? nic->cbs + count - 1 : cb - 1;
1854
1855 cb->dma_addr = nic->cbs_dma_addr + i * sizeof(struct cb);
1856 cb->link = cpu_to_le32(nic->cbs_dma_addr +
1857 ((i+1) % count) * sizeof(struct cb));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001858 }
1859
1860 nic->cb_to_use = nic->cb_to_send = nic->cb_to_clean = nic->cbs;
1861 nic->cbs_avail = count;
1862
1863 return 0;
1864}
1865
Jeff Garzikca93ca42007-06-12 18:52:31 -04001866static inline void e100_start_receiver(struct nic *nic, struct rx *rx)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001867{
Bruce Allanf26251e2009-01-04 17:12:04 -08001868 if (!nic->rxs) return;
1869 if (RU_SUSPENDED != nic->ru_running) return;
Jeff Garzikca93ca42007-06-12 18:52:31 -04001870
1871 /* handle init time starts */
Bruce Allanf26251e2009-01-04 17:12:04 -08001872 if (!rx) rx = nic->rxs;
Jeff Garzikca93ca42007-06-12 18:52:31 -04001873
1874 /* (Re)start RU if suspended or idle and RFA is non-NULL */
Bruce Allanf26251e2009-01-04 17:12:04 -08001875 if (rx->skb) {
Jeff Garzikca93ca42007-06-12 18:52:31 -04001876 e100_exec_cmd(nic, ruc_start, rx->dma_addr);
1877 nic->ru_running = RU_RUNNING;
1878 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001879}
1880
1881#define RFD_BUF_LEN (sizeof(struct rfd) + VLAN_ETH_FRAME_LEN)
Arjan van de Ven858119e2006-01-14 13:20:43 -08001882static int e100_rx_alloc_skb(struct nic *nic, struct rx *rx)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001883{
Eric Dumazet89d71a62009-10-13 05:34:20 +00001884 if (!(rx->skb = netdev_alloc_skb_ip_align(nic->netdev, RFD_BUF_LEN)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001885 return -ENOMEM;
1886
Eric Dumazet89d71a62009-10-13 05:34:20 +00001887 /* Init, and map the RFD. */
Arnaldo Carvalho de Melo27d7ff42007-03-31 11:55:19 -03001888 skb_copy_to_linear_data(rx->skb, &nic->blank_rfd, sizeof(struct rfd));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001889 rx->dma_addr = pci_map_single(nic->pdev, rx->skb->data,
1890 RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
1891
FUJITA Tomonori8d8bb392008-07-25 19:44:49 -07001892 if (pci_dma_mapping_error(nic->pdev, rx->dma_addr)) {
Malli Chilakala1f533672005-04-28 19:17:20 -07001893 dev_kfree_skb_any(rx->skb);
Luiz Fernando Capitulino097688e2005-11-07 18:14:12 -02001894 rx->skb = NULL;
Malli Chilakala1f533672005-04-28 19:17:20 -07001895 rx->dma_addr = 0;
1896 return -ENOMEM;
1897 }
1898
Linus Torvalds1da177e2005-04-16 15:20:36 -07001899 /* Link the RFD to end of RFA by linking previous RFD to
David Acker7734f6e2007-11-08 10:17:41 -08001900 * this one. We are safe to touch the previous RFD because
1901 * it is protected by the before last buffer's el bit being set */
Al Viroaaf918b2007-12-10 18:32:49 +00001902 if (rx->prev->skb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001903 struct rfd *prev_rfd = (struct rfd *)rx->prev->skb->data;
Harvey Harrison6caf52a42008-04-29 01:03:36 -07001904 put_unaligned_le32(rx->dma_addr, &prev_rfd->link);
Kevin Hao19238152008-06-21 18:20:35 +08001905 pci_dma_sync_single_for_device(nic->pdev, rx->prev->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00001906 sizeof(struct rfd), PCI_DMA_BIDIRECTIONAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001907 }
1908
1909 return 0;
1910}
1911
Arjan van de Ven858119e2006-01-14 13:20:43 -08001912static int e100_rx_indicate(struct nic *nic, struct rx *rx,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001913 unsigned int *work_done, unsigned int work_to_do)
1914{
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001915 struct net_device *dev = nic->netdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001916 struct sk_buff *skb = rx->skb;
1917 struct rfd *rfd = (struct rfd *)skb->data;
1918 u16 rfd_status, actual_size;
1919
Bruce Allanf26251e2009-01-04 17:12:04 -08001920 if (unlikely(work_done && *work_done >= work_to_do))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001921 return -EAGAIN;
1922
1923 /* Need to sync before taking a peek at cb_complete bit */
1924 pci_dma_sync_single_for_cpu(nic->pdev, rx->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00001925 sizeof(struct rfd), PCI_DMA_BIDIRECTIONAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001926 rfd_status = le16_to_cpu(rfd->status);
1927
Joe Perchesfa05e1a2010-03-16 21:24:32 -07001928 netif_printk(nic, rx_status, KERN_DEBUG, nic->netdev,
1929 "status=0x%04X\n", rfd_status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001930
1931 /* If data isn't ready, nothing to indicate */
David Acker7734f6e2007-11-08 10:17:41 -08001932 if (unlikely(!(rfd_status & cb_complete))) {
1933 /* If the next buffer has the el bit, but we think the receiver
1934 * is still running, check to see if it really stopped while
1935 * we had interrupts off.
1936 * This allows for a fast restart without re-enabling
1937 * interrupts */
1938 if ((le16_to_cpu(rfd->command) & cb_el) &&
1939 (RU_RUNNING == nic->ru_running))
1940
Jiri Slaby17393dd2008-08-14 18:27:23 +02001941 if (ioread8(&nic->csr->scb.status) & rus_no_res)
David Acker7734f6e2007-11-08 10:17:41 -08001942 nic->ru_running = RU_SUSPENDED;
Krzysztof Halasa303d67c2009-07-14 11:01:54 +00001943 pci_dma_sync_single_for_device(nic->pdev, rx->dma_addr,
1944 sizeof(struct rfd),
Krzysztof Hałasa6ff9c2e2009-08-23 19:02:13 -07001945 PCI_DMA_FROMDEVICE);
Malli Chilakala1f533672005-04-28 19:17:20 -07001946 return -ENODATA;
David Acker7734f6e2007-11-08 10:17:41 -08001947 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001948
1949 /* Get actual data size */
1950 actual_size = le16_to_cpu(rfd->actual_size) & 0x3FFF;
Bruce Allanf26251e2009-01-04 17:12:04 -08001951 if (unlikely(actual_size > RFD_BUF_LEN - sizeof(struct rfd)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001952 actual_size = RFD_BUF_LEN - sizeof(struct rfd);
1953
1954 /* Get data */
1955 pci_unmap_single(nic->pdev, rx->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00001956 RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001957
David Acker7734f6e2007-11-08 10:17:41 -08001958 /* If this buffer has the el bit, but we think the receiver
1959 * is still running, check to see if it really stopped while
1960 * we had interrupts off.
1961 * This allows for a fast restart without re-enabling interrupts.
1962 * This can happen when the RU sees the size change but also sees
1963 * the el bit set. */
1964 if ((le16_to_cpu(rfd->command) & cb_el) &&
1965 (RU_RUNNING == nic->ru_running)) {
1966
Jiri Slaby17393dd2008-08-14 18:27:23 +02001967 if (ioread8(&nic->csr->scb.status) & rus_no_res)
Jeff Garzikca93ca42007-06-12 18:52:31 -04001968 nic->ru_running = RU_SUSPENDED;
David Acker7734f6e2007-11-08 10:17:41 -08001969 }
Jeff Garzikca93ca42007-06-12 18:52:31 -04001970
Linus Torvalds1da177e2005-04-16 15:20:36 -07001971 /* Pull off the RFD and put the actual data (minus eth hdr) */
1972 skb_reserve(skb, sizeof(struct rfd));
1973 skb_put(skb, actual_size);
1974 skb->protocol = eth_type_trans(skb, nic->netdev);
1975
Bruce Allanf26251e2009-01-04 17:12:04 -08001976 if (unlikely(!(rfd_status & cb_ok))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001977 /* Don't indicate if hardware indicates errors */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001978 dev_kfree_skb_any(skb);
Bruce Allanf26251e2009-01-04 17:12:04 -08001979 } else if (actual_size > ETH_DATA_LEN + VLAN_ETH_HLEN) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001980 /* Don't indicate oversized frames */
1981 nic->rx_over_length_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001982 dev_kfree_skb_any(skb);
1983 } else {
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001984 dev->stats.rx_packets++;
1985 dev->stats.rx_bytes += actual_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001986 netif_receive_skb(skb);
Bruce Allanf26251e2009-01-04 17:12:04 -08001987 if (work_done)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001988 (*work_done)++;
1989 }
1990
1991 rx->skb = NULL;
1992
1993 return 0;
1994}
1995
Arjan van de Ven858119e2006-01-14 13:20:43 -08001996static void e100_rx_clean(struct nic *nic, unsigned int *work_done,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001997 unsigned int work_to_do)
1998{
1999 struct rx *rx;
David Acker7734f6e2007-11-08 10:17:41 -08002000 int restart_required = 0, err = 0;
2001 struct rx *old_before_last_rx, *new_before_last_rx;
2002 struct rfd *old_before_last_rfd, *new_before_last_rfd;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002003
2004 /* Indicate newly arrived packets */
Bruce Allanf26251e2009-01-04 17:12:04 -08002005 for (rx = nic->rx_to_clean; rx->skb; rx = nic->rx_to_clean = rx->next) {
David Acker7734f6e2007-11-08 10:17:41 -08002006 err = e100_rx_indicate(nic, rx, work_done, work_to_do);
2007 /* Hit quota or no more to clean */
2008 if (-EAGAIN == err || -ENODATA == err)
Jeff Garzikca93ca42007-06-12 18:52:31 -04002009 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002010 }
2011
David Acker7734f6e2007-11-08 10:17:41 -08002012
2013 /* On EAGAIN, hit quota so have more work to do, restart once
2014 * cleanup is complete.
2015 * Else, are we already rnr? then pay attention!!! this ensures that
2016 * the state machine progression never allows a start with a
2017 * partially cleaned list, avoiding a race between hardware
2018 * and rx_to_clean when in NAPI mode */
2019 if (-EAGAIN != err && RU_SUSPENDED == nic->ru_running)
2020 restart_required = 1;
2021
2022 old_before_last_rx = nic->rx_to_use->prev->prev;
2023 old_before_last_rfd = (struct rfd *)old_before_last_rx->skb->data;
Jeff Garzikca93ca42007-06-12 18:52:31 -04002024
Linus Torvalds1da177e2005-04-16 15:20:36 -07002025 /* Alloc new skbs to refill list */
Bruce Allanf26251e2009-01-04 17:12:04 -08002026 for (rx = nic->rx_to_use; !rx->skb; rx = nic->rx_to_use = rx->next) {
2027 if (unlikely(e100_rx_alloc_skb(nic, rx)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002028 break; /* Better luck next time (see watchdog) */
2029 }
Jeff Garzikca93ca42007-06-12 18:52:31 -04002030
David Acker7734f6e2007-11-08 10:17:41 -08002031 new_before_last_rx = nic->rx_to_use->prev->prev;
2032 if (new_before_last_rx != old_before_last_rx) {
2033 /* Set the el-bit on the buffer that is before the last buffer.
2034 * This lets us update the next pointer on the last buffer
2035 * without worrying about hardware touching it.
2036 * We set the size to 0 to prevent hardware from touching this
2037 * buffer.
2038 * When the hardware hits the before last buffer with el-bit
2039 * and size of 0, it will RNR interrupt, the RUS will go into
2040 * the No Resources state. It will not complete nor write to
2041 * this buffer. */
2042 new_before_last_rfd =
2043 (struct rfd *)new_before_last_rx->skb->data;
2044 new_before_last_rfd->size = 0;
2045 new_before_last_rfd->command |= cpu_to_le16(cb_el);
2046 pci_dma_sync_single_for_device(nic->pdev,
2047 new_before_last_rx->dma_addr, sizeof(struct rfd),
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00002048 PCI_DMA_BIDIRECTIONAL);
David Acker7734f6e2007-11-08 10:17:41 -08002049
2050 /* Now that we have a new stopping point, we can clear the old
2051 * stopping point. We must sync twice to get the proper
2052 * ordering on the hardware side of things. */
2053 old_before_last_rfd->command &= ~cpu_to_le16(cb_el);
2054 pci_dma_sync_single_for_device(nic->pdev,
2055 old_before_last_rx->dma_addr, sizeof(struct rfd),
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00002056 PCI_DMA_BIDIRECTIONAL);
David Acker7734f6e2007-11-08 10:17:41 -08002057 old_before_last_rfd->size = cpu_to_le16(VLAN_ETH_FRAME_LEN);
2058 pci_dma_sync_single_for_device(nic->pdev,
2059 old_before_last_rx->dma_addr, sizeof(struct rfd),
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00002060 PCI_DMA_BIDIRECTIONAL);
David Acker7734f6e2007-11-08 10:17:41 -08002061 }
2062
Bruce Allanf26251e2009-01-04 17:12:04 -08002063 if (restart_required) {
Jeff Garzikca93ca42007-06-12 18:52:31 -04002064 // ack the rnr?
Jiri Slaby915e91d2008-01-29 22:49:16 +01002065 iowrite8(stat_ack_rnr, &nic->csr->scb.stat_ack);
David Acker7734f6e2007-11-08 10:17:41 -08002066 e100_start_receiver(nic, nic->rx_to_clean);
Bruce Allanf26251e2009-01-04 17:12:04 -08002067 if (work_done)
Jeff Garzikca93ca42007-06-12 18:52:31 -04002068 (*work_done)++;
2069 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002070}
2071
2072static void e100_rx_clean_list(struct nic *nic)
2073{
2074 struct rx *rx;
2075 unsigned int i, count = nic->params.rfds.count;
2076
Jeff Garzikca93ca42007-06-12 18:52:31 -04002077 nic->ru_running = RU_UNINITIALIZED;
2078
Bruce Allanf26251e2009-01-04 17:12:04 -08002079 if (nic->rxs) {
2080 for (rx = nic->rxs, i = 0; i < count; rx++, i++) {
2081 if (rx->skb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002082 pci_unmap_single(nic->pdev, rx->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00002083 RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002084 dev_kfree_skb(rx->skb);
2085 }
2086 }
2087 kfree(nic->rxs);
2088 nic->rxs = NULL;
2089 }
2090
2091 nic->rx_to_use = nic->rx_to_clean = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002092}
2093
2094static int e100_rx_alloc_list(struct nic *nic)
2095{
2096 struct rx *rx;
2097 unsigned int i, count = nic->params.rfds.count;
David Acker7734f6e2007-11-08 10:17:41 -08002098 struct rfd *before_last;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002099
2100 nic->rx_to_use = nic->rx_to_clean = NULL;
Jeff Garzikca93ca42007-06-12 18:52:31 -04002101 nic->ru_running = RU_UNINITIALIZED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002102
Bruce Allanf26251e2009-01-04 17:12:04 -08002103 if (!(nic->rxs = kcalloc(count, sizeof(struct rx), GFP_ATOMIC)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002104 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002105
Bruce Allanf26251e2009-01-04 17:12:04 -08002106 for (rx = nic->rxs, i = 0; i < count; rx++, i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002107 rx->next = (i + 1 < count) ? rx + 1 : nic->rxs;
2108 rx->prev = (i == 0) ? nic->rxs + count - 1 : rx - 1;
Bruce Allanf26251e2009-01-04 17:12:04 -08002109 if (e100_rx_alloc_skb(nic, rx)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002110 e100_rx_clean_list(nic);
2111 return -ENOMEM;
2112 }
2113 }
David Acker7734f6e2007-11-08 10:17:41 -08002114 /* Set the el-bit on the buffer that is before the last buffer.
2115 * This lets us update the next pointer on the last buffer without
2116 * worrying about hardware touching it.
2117 * We set the size to 0 to prevent hardware from touching this buffer.
2118 * When the hardware hits the before last buffer with el-bit and size
2119 * of 0, it will RNR interrupt, the RU will go into the No Resources
2120 * state. It will not complete nor write to this buffer. */
2121 rx = nic->rxs->prev->prev;
2122 before_last = (struct rfd *)rx->skb->data;
2123 before_last->command |= cpu_to_le16(cb_el);
2124 before_last->size = 0;
2125 pci_dma_sync_single_for_device(nic->pdev, rx->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00002126 sizeof(struct rfd), PCI_DMA_BIDIRECTIONAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002127
2128 nic->rx_to_use = nic->rx_to_clean = nic->rxs;
Jeff Garzikca93ca42007-06-12 18:52:31 -04002129 nic->ru_running = RU_SUSPENDED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002130
2131 return 0;
2132}
2133
David Howells7d12e782006-10-05 14:55:46 +01002134static irqreturn_t e100_intr(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002135{
2136 struct net_device *netdev = dev_id;
2137 struct nic *nic = netdev_priv(netdev);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002138 u8 stat_ack = ioread8(&nic->csr->scb.stat_ack);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002139
Joe Perchesfa05e1a2010-03-16 21:24:32 -07002140 netif_printk(nic, intr, KERN_DEBUG, nic->netdev,
2141 "stat_ack = 0x%02X\n", stat_ack);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002142
Bruce Allanf26251e2009-01-04 17:12:04 -08002143 if (stat_ack == stat_ack_not_ours || /* Not our interrupt */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002144 stat_ack == stat_ack_not_present) /* Hardware is ejected */
2145 return IRQ_NONE;
2146
2147 /* Ack interrupt(s) */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002148 iowrite8(stat_ack, &nic->csr->scb.stat_ack);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002149
Jeff Garzikca93ca42007-06-12 18:52:31 -04002150 /* We hit Receive No Resource (RNR); restart RU after cleaning */
Bruce Allanf26251e2009-01-04 17:12:04 -08002151 if (stat_ack & stat_ack_rnr)
Jeff Garzikca93ca42007-06-12 18:52:31 -04002152 nic->ru_running = RU_SUSPENDED;
2153
Ben Hutchings288379f2009-01-19 16:43:59 -08002154 if (likely(napi_schedule_prep(&nic->napi))) {
Malli Chilakala0685c312005-06-17 17:31:44 -07002155 e100_disable_irq(nic);
Ben Hutchings288379f2009-01-19 16:43:59 -08002156 __napi_schedule(&nic->napi);
Malli Chilakala0685c312005-06-17 17:31:44 -07002157 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002158
2159 return IRQ_HANDLED;
2160}
2161
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002162static int e100_poll(struct napi_struct *napi, int budget)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002163{
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002164 struct nic *nic = container_of(napi, struct nic, napi);
Stephen Hemmingerddfce6b2007-10-05 17:19:47 -07002165 unsigned int work_done = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002166
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002167 e100_rx_clean(nic, &work_done, budget);
David S. Miller53e52c72008-01-07 21:06:12 -08002168 e100_tx_clean(nic);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002169
David S. Miller53e52c72008-01-07 21:06:12 -08002170 /* If budget not fully consumed, exit the polling mode */
2171 if (work_done < budget) {
Ben Hutchings288379f2009-01-19 16:43:59 -08002172 napi_complete(napi);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002173 e100_enable_irq(nic);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002174 }
2175
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002176 return work_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002177}
2178
2179#ifdef CONFIG_NET_POLL_CONTROLLER
2180static void e100_netpoll(struct net_device *netdev)
2181{
2182 struct nic *nic = netdev_priv(netdev);
Malli Chilakala611494d2005-08-25 13:06:52 -07002183
Linus Torvalds1da177e2005-04-16 15:20:36 -07002184 e100_disable_irq(nic);
David Howells7d12e782006-10-05 14:55:46 +01002185 e100_intr(nic->pdev->irq, netdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002186 e100_tx_clean(nic);
2187 e100_enable_irq(nic);
2188}
2189#endif
2190
Linus Torvalds1da177e2005-04-16 15:20:36 -07002191static int e100_set_mac_address(struct net_device *netdev, void *p)
2192{
2193 struct nic *nic = netdev_priv(netdev);
2194 struct sockaddr *addr = p;
2195
2196 if (!is_valid_ether_addr(addr->sa_data))
2197 return -EADDRNOTAVAIL;
2198
2199 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2200 e100_exec_cb(nic, NULL, e100_setup_iaaddr);
2201
2202 return 0;
2203}
2204
2205static int e100_change_mtu(struct net_device *netdev, int new_mtu)
2206{
Bruce Allanf26251e2009-01-04 17:12:04 -08002207 if (new_mtu < ETH_ZLEN || new_mtu > ETH_DATA_LEN)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002208 return -EINVAL;
2209 netdev->mtu = new_mtu;
2210 return 0;
2211}
2212
2213static int e100_asf(struct nic *nic)
2214{
2215 /* ASF can be enabled from eeprom */
2216 return((nic->pdev->device >= 0x1050) && (nic->pdev->device <= 0x1057) &&
2217 (nic->eeprom[eeprom_config_asf] & eeprom_asf) &&
2218 !(nic->eeprom[eeprom_config_asf] & eeprom_gcl) &&
2219 ((nic->eeprom[eeprom_smbus_addr] & 0xFF) != 0xFE));
2220}
2221
2222static int e100_up(struct nic *nic)
2223{
2224 int err;
2225
Bruce Allanf26251e2009-01-04 17:12:04 -08002226 if ((err = e100_rx_alloc_list(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002227 return err;
Bruce Allanf26251e2009-01-04 17:12:04 -08002228 if ((err = e100_alloc_cbs(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002229 goto err_rx_clean_list;
Bruce Allanf26251e2009-01-04 17:12:04 -08002230 if ((err = e100_hw_init(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002231 goto err_clean_cbs;
2232 e100_set_multicast_list(nic->netdev);
Jeff Garzikca93ca42007-06-12 18:52:31 -04002233 e100_start_receiver(nic, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002234 mod_timer(&nic->watchdog, jiffies);
Bruce Allanf26251e2009-01-04 17:12:04 -08002235 if ((err = request_irq(nic->pdev->irq, e100_intr, IRQF_SHARED,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002236 nic->netdev->name, nic->netdev)))
2237 goto err_no_irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002238 netif_wake_queue(nic->netdev);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002239 napi_enable(&nic->napi);
Malli Chilakala0236ebb2005-04-28 19:17:42 -07002240 /* enable ints _after_ enabling poll, preventing a race between
2241 * disable ints+schedule */
2242 e100_enable_irq(nic);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002243 return 0;
2244
2245err_no_irq:
2246 del_timer_sync(&nic->watchdog);
2247err_clean_cbs:
2248 e100_clean_cbs(nic);
2249err_rx_clean_list:
2250 e100_rx_clean_list(nic);
2251 return err;
2252}
2253
2254static void e100_down(struct nic *nic)
2255{
Malli Chilakala0236ebb2005-04-28 19:17:42 -07002256 /* wait here for poll to complete */
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002257 napi_disable(&nic->napi);
Malli Chilakala0236ebb2005-04-28 19:17:42 -07002258 netif_stop_queue(nic->netdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002259 e100_hw_reset(nic);
2260 free_irq(nic->pdev->irq, nic->netdev);
2261 del_timer_sync(&nic->watchdog);
2262 netif_carrier_off(nic->netdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002263 e100_clean_cbs(nic);
2264 e100_rx_clean_list(nic);
2265}
2266
2267static void e100_tx_timeout(struct net_device *netdev)
2268{
2269 struct nic *nic = netdev_priv(netdev);
2270
Jesse Brandeburg05479932006-01-17 15:01:10 -08002271 /* Reset outside of interrupt context, to avoid request_irq
Malli Chilakala2acdb1e2005-04-28 19:16:58 -07002272 * in interrupt context */
2273 schedule_work(&nic->tx_timeout_task);
2274}
2275
David Howellsc4028952006-11-22 14:57:56 +00002276static void e100_tx_timeout_task(struct work_struct *work)
Malli Chilakala2acdb1e2005-04-28 19:16:58 -07002277{
David Howellsc4028952006-11-22 14:57:56 +00002278 struct nic *nic = container_of(work, struct nic, tx_timeout_task);
2279 struct net_device *netdev = nic->netdev;
Malli Chilakala2acdb1e2005-04-28 19:16:58 -07002280
Joe Perchesfa05e1a2010-03-16 21:24:32 -07002281 netif_printk(nic, tx_err, KERN_DEBUG, nic->netdev,
2282 "scb.status=0x%02X\n", ioread8(&nic->csr->scb.status));
Alan Cox401da6a2010-04-24 21:09:29 -07002283
2284 rtnl_lock();
2285 if (netif_running(netdev)) {
2286 e100_down(netdev_priv(netdev));
2287 e100_up(netdev_priv(netdev));
2288 }
2289 rtnl_unlock();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002290}
2291
2292static int e100_loopback_test(struct nic *nic, enum loopback loopback_mode)
2293{
2294 int err;
2295 struct sk_buff *skb;
2296
2297 /* Use driver resources to perform internal MAC or PHY
2298 * loopback test. A single packet is prepared and transmitted
2299 * in loopback mode, and the test passes if the received
2300 * packet compares byte-for-byte to the transmitted packet. */
2301
Bruce Allanf26251e2009-01-04 17:12:04 -08002302 if ((err = e100_rx_alloc_list(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002303 return err;
Bruce Allanf26251e2009-01-04 17:12:04 -08002304 if ((err = e100_alloc_cbs(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002305 goto err_clean_rx;
2306
2307 /* ICH PHY loopback is broken so do MAC loopback instead */
Bruce Allanf26251e2009-01-04 17:12:04 -08002308 if (nic->flags & ich && loopback_mode == lb_phy)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002309 loopback_mode = lb_mac;
2310
2311 nic->loopback = loopback_mode;
Bruce Allanf26251e2009-01-04 17:12:04 -08002312 if ((err = e100_hw_init(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002313 goto err_loopback_none;
2314
Bruce Allanf26251e2009-01-04 17:12:04 -08002315 if (loopback_mode == lb_phy)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002316 mdio_write(nic->netdev, nic->mii.phy_id, MII_BMCR,
2317 BMCR_LOOPBACK);
2318
Jeff Garzikca93ca42007-06-12 18:52:31 -04002319 e100_start_receiver(nic, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002320
Bruce Allanf26251e2009-01-04 17:12:04 -08002321 if (!(skb = netdev_alloc_skb(nic->netdev, ETH_DATA_LEN))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002322 err = -ENOMEM;
2323 goto err_loopback_none;
2324 }
2325 skb_put(skb, ETH_DATA_LEN);
2326 memset(skb->data, 0xFF, ETH_DATA_LEN);
2327 e100_xmit_frame(skb, nic->netdev);
2328
2329 msleep(10);
2330
Jesse Brandeburgaa49cdd2006-03-15 10:55:24 -08002331 pci_dma_sync_single_for_cpu(nic->pdev, nic->rx_to_clean->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00002332 RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
Jesse Brandeburgaa49cdd2006-03-15 10:55:24 -08002333
Bruce Allanf26251e2009-01-04 17:12:04 -08002334 if (memcmp(nic->rx_to_clean->skb->data + sizeof(struct rfd),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002335 skb->data, ETH_DATA_LEN))
2336 err = -EAGAIN;
2337
2338err_loopback_none:
2339 mdio_write(nic->netdev, nic->mii.phy_id, MII_BMCR, 0);
2340 nic->loopback = lb_none;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002341 e100_clean_cbs(nic);
Jesse Brandeburgaa49cdd2006-03-15 10:55:24 -08002342 e100_hw_reset(nic);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002343err_clean_rx:
2344 e100_rx_clean_list(nic);
2345 return err;
2346}
2347
2348#define MII_LED_CONTROL 0x1B
Bruce Allanb55de802009-03-21 13:25:25 -07002349#define E100_82552_LED_OVERRIDE 0x19
2350#define E100_82552_LED_ON 0x000F /* LEDTX and LED_RX both on */
2351#define E100_82552_LED_OFF 0x000A /* LEDTX and LED_RX both off */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002352static void e100_blink_led(unsigned long data)
2353{
2354 struct nic *nic = (struct nic *)data;
2355 enum led_state {
2356 led_on = 0x01,
2357 led_off = 0x04,
2358 led_on_559 = 0x05,
2359 led_on_557 = 0x07,
2360 };
Bruce Allanb55de802009-03-21 13:25:25 -07002361 u16 led_reg = MII_LED_CONTROL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002362
Bruce Allanb55de802009-03-21 13:25:25 -07002363 if (nic->phy == phy_82552_v) {
2364 led_reg = E100_82552_LED_OVERRIDE;
2365
2366 nic->leds = (nic->leds == E100_82552_LED_ON) ?
2367 E100_82552_LED_OFF : E100_82552_LED_ON;
2368 } else {
2369 nic->leds = (nic->leds & led_on) ? led_off :
2370 (nic->mac < mac_82559_D101M) ? led_on_557 :
2371 led_on_559;
2372 }
2373 mdio_write(nic->netdev, nic->mii.phy_id, led_reg, nic->leds);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002374 mod_timer(&nic->blink_timer, jiffies + HZ / 4);
2375}
2376
2377static int e100_get_settings(struct net_device *netdev, struct ethtool_cmd *cmd)
2378{
2379 struct nic *nic = netdev_priv(netdev);
2380 return mii_ethtool_gset(&nic->mii, cmd);
2381}
2382
2383static int e100_set_settings(struct net_device *netdev, struct ethtool_cmd *cmd)
2384{
2385 struct nic *nic = netdev_priv(netdev);
2386 int err;
2387
2388 mdio_write(netdev, nic->mii.phy_id, MII_BMCR, BMCR_RESET);
2389 err = mii_ethtool_sset(&nic->mii, cmd);
2390 e100_exec_cb(nic, NULL, e100_configure);
2391
2392 return err;
2393}
2394
2395static void e100_get_drvinfo(struct net_device *netdev,
2396 struct ethtool_drvinfo *info)
2397{
2398 struct nic *nic = netdev_priv(netdev);
2399 strcpy(info->driver, DRV_NAME);
2400 strcpy(info->version, DRV_VERSION);
2401 strcpy(info->fw_version, "N/A");
2402 strcpy(info->bus_info, pci_name(nic->pdev));
2403}
2404
Auke Kokabf9b902007-12-05 11:57:37 -08002405#define E100_PHY_REGS 0x1C
Linus Torvalds1da177e2005-04-16 15:20:36 -07002406static int e100_get_regs_len(struct net_device *netdev)
2407{
2408 struct nic *nic = netdev_priv(netdev);
Auke Kokabf9b902007-12-05 11:57:37 -08002409 return 1 + E100_PHY_REGS + sizeof(nic->mem->dump_buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002410}
2411
2412static void e100_get_regs(struct net_device *netdev,
2413 struct ethtool_regs *regs, void *p)
2414{
2415 struct nic *nic = netdev_priv(netdev);
2416 u32 *buff = p;
2417 int i;
2418
Auke Kok44c10132007-06-08 15:46:36 -07002419 regs->version = (1 << 24) | nic->pdev->revision;
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002420 buff[0] = ioread8(&nic->csr->scb.cmd_hi) << 24 |
2421 ioread8(&nic->csr->scb.cmd_lo) << 16 |
2422 ioread16(&nic->csr->scb.status);
Bruce Allanf26251e2009-01-04 17:12:04 -08002423 for (i = E100_PHY_REGS; i >= 0; i--)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002424 buff[1 + E100_PHY_REGS - i] =
2425 mdio_read(netdev, nic->mii.phy_id, i);
2426 memset(nic->mem->dump_buf, 0, sizeof(nic->mem->dump_buf));
2427 e100_exec_cb(nic, NULL, e100_dump);
2428 msleep(10);
2429 memcpy(&buff[2 + E100_PHY_REGS], nic->mem->dump_buf,
2430 sizeof(nic->mem->dump_buf));
2431}
2432
2433static void e100_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
2434{
2435 struct nic *nic = netdev_priv(netdev);
2436 wol->supported = (nic->mac >= mac_82558_D101_A4) ? WAKE_MAGIC : 0;
2437 wol->wolopts = (nic->flags & wol_magic) ? WAKE_MAGIC : 0;
2438}
2439
2440static int e100_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
2441{
2442 struct nic *nic = netdev_priv(netdev);
2443
Rafael J. Wysockibc79fc82008-10-29 14:22:18 -07002444 if ((wol->wolopts && wol->wolopts != WAKE_MAGIC) ||
2445 !device_can_wakeup(&nic->pdev->dev))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002446 return -EOPNOTSUPP;
2447
Bruce Allanf26251e2009-01-04 17:12:04 -08002448 if (wol->wolopts)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002449 nic->flags |= wol_magic;
2450 else
2451 nic->flags &= ~wol_magic;
2452
Rafael J. Wysockibc79fc82008-10-29 14:22:18 -07002453 device_set_wakeup_enable(&nic->pdev->dev, wol->wolopts);
2454
Linus Torvalds1da177e2005-04-16 15:20:36 -07002455 e100_exec_cb(nic, NULL, e100_configure);
2456
2457 return 0;
2458}
2459
2460static u32 e100_get_msglevel(struct net_device *netdev)
2461{
2462 struct nic *nic = netdev_priv(netdev);
2463 return nic->msg_enable;
2464}
2465
2466static void e100_set_msglevel(struct net_device *netdev, u32 value)
2467{
2468 struct nic *nic = netdev_priv(netdev);
2469 nic->msg_enable = value;
2470}
2471
2472static int e100_nway_reset(struct net_device *netdev)
2473{
2474 struct nic *nic = netdev_priv(netdev);
2475 return mii_nway_restart(&nic->mii);
2476}
2477
2478static u32 e100_get_link(struct net_device *netdev)
2479{
2480 struct nic *nic = netdev_priv(netdev);
2481 return mii_link_ok(&nic->mii);
2482}
2483
2484static int e100_get_eeprom_len(struct net_device *netdev)
2485{
2486 struct nic *nic = netdev_priv(netdev);
2487 return nic->eeprom_wc << 1;
2488}
2489
2490#define E100_EEPROM_MAGIC 0x1234
2491static int e100_get_eeprom(struct net_device *netdev,
2492 struct ethtool_eeprom *eeprom, u8 *bytes)
2493{
2494 struct nic *nic = netdev_priv(netdev);
2495
2496 eeprom->magic = E100_EEPROM_MAGIC;
2497 memcpy(bytes, &((u8 *)nic->eeprom)[eeprom->offset], eeprom->len);
2498
2499 return 0;
2500}
2501
2502static int e100_set_eeprom(struct net_device *netdev,
2503 struct ethtool_eeprom *eeprom, u8 *bytes)
2504{
2505 struct nic *nic = netdev_priv(netdev);
2506
Bruce Allanf26251e2009-01-04 17:12:04 -08002507 if (eeprom->magic != E100_EEPROM_MAGIC)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002508 return -EINVAL;
2509
2510 memcpy(&((u8 *)nic->eeprom)[eeprom->offset], bytes, eeprom->len);
2511
2512 return e100_eeprom_save(nic, eeprom->offset >> 1,
2513 (eeprom->len >> 1) + 1);
2514}
2515
2516static void e100_get_ringparam(struct net_device *netdev,
2517 struct ethtool_ringparam *ring)
2518{
2519 struct nic *nic = netdev_priv(netdev);
2520 struct param_range *rfds = &nic->params.rfds;
2521 struct param_range *cbs = &nic->params.cbs;
2522
2523 ring->rx_max_pending = rfds->max;
2524 ring->tx_max_pending = cbs->max;
2525 ring->rx_mini_max_pending = 0;
2526 ring->rx_jumbo_max_pending = 0;
2527 ring->rx_pending = rfds->count;
2528 ring->tx_pending = cbs->count;
2529 ring->rx_mini_pending = 0;
2530 ring->rx_jumbo_pending = 0;
2531}
2532
2533static int e100_set_ringparam(struct net_device *netdev,
2534 struct ethtool_ringparam *ring)
2535{
2536 struct nic *nic = netdev_priv(netdev);
2537 struct param_range *rfds = &nic->params.rfds;
2538 struct param_range *cbs = &nic->params.cbs;
2539
Jesse Brandeburg05479932006-01-17 15:01:10 -08002540 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002541 return -EINVAL;
2542
Bruce Allanf26251e2009-01-04 17:12:04 -08002543 if (netif_running(netdev))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002544 e100_down(nic);
2545 rfds->count = max(ring->rx_pending, rfds->min);
2546 rfds->count = min(rfds->count, rfds->max);
2547 cbs->count = max(ring->tx_pending, cbs->min);
2548 cbs->count = min(cbs->count, cbs->max);
Joe Perchesfa05e1a2010-03-16 21:24:32 -07002549 netif_info(nic, drv, nic->netdev, "Ring Param settings: rx: %d, tx %d\n",
2550 rfds->count, cbs->count);
Bruce Allanf26251e2009-01-04 17:12:04 -08002551 if (netif_running(netdev))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002552 e100_up(nic);
2553
2554 return 0;
2555}
2556
2557static const char e100_gstrings_test[][ETH_GSTRING_LEN] = {
2558 "Link test (on/offline)",
2559 "Eeprom test (on/offline)",
2560 "Self test (offline)",
2561 "Mac loopback (offline)",
2562 "Phy loopback (offline)",
2563};
Alejandro Martinez Ruiz4c3616c2007-10-18 10:00:15 +02002564#define E100_TEST_LEN ARRAY_SIZE(e100_gstrings_test)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002565
Linus Torvalds1da177e2005-04-16 15:20:36 -07002566static void e100_diag_test(struct net_device *netdev,
2567 struct ethtool_test *test, u64 *data)
2568{
2569 struct ethtool_cmd cmd;
2570 struct nic *nic = netdev_priv(netdev);
2571 int i, err;
2572
2573 memset(data, 0, E100_TEST_LEN * sizeof(u64));
2574 data[0] = !mii_link_ok(&nic->mii);
2575 data[1] = e100_eeprom_load(nic);
Bruce Allanf26251e2009-01-04 17:12:04 -08002576 if (test->flags & ETH_TEST_FL_OFFLINE) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002577
2578 /* save speed, duplex & autoneg settings */
2579 err = mii_ethtool_gset(&nic->mii, &cmd);
2580
Bruce Allanf26251e2009-01-04 17:12:04 -08002581 if (netif_running(netdev))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002582 e100_down(nic);
2583 data[2] = e100_self_test(nic);
2584 data[3] = e100_loopback_test(nic, lb_mac);
2585 data[4] = e100_loopback_test(nic, lb_phy);
2586
2587 /* restore speed, duplex & autoneg settings */
2588 err = mii_ethtool_sset(&nic->mii, &cmd);
2589
Bruce Allanf26251e2009-01-04 17:12:04 -08002590 if (netif_running(netdev))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002591 e100_up(nic);
2592 }
Bruce Allanf26251e2009-01-04 17:12:04 -08002593 for (i = 0; i < E100_TEST_LEN; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002594 test->flags |= data[i] ? ETH_TEST_FL_FAILED : 0;
Malli Chilakalaa074fb82005-08-25 13:05:57 -07002595
2596 msleep_interruptible(4 * 1000);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002597}
2598
2599static int e100_phys_id(struct net_device *netdev, u32 data)
2600{
2601 struct nic *nic = netdev_priv(netdev);
Bruce Allanb55de802009-03-21 13:25:25 -07002602 u16 led_reg = (nic->phy == phy_82552_v) ? E100_82552_LED_OVERRIDE :
2603 MII_LED_CONTROL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002604
Bruce Allanf26251e2009-01-04 17:12:04 -08002605 if (!data || data > (u32)(MAX_SCHEDULE_TIMEOUT / HZ))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002606 data = (u32)(MAX_SCHEDULE_TIMEOUT / HZ);
2607 mod_timer(&nic->blink_timer, jiffies);
2608 msleep_interruptible(data * 1000);
2609 del_timer_sync(&nic->blink_timer);
Bruce Allanb55de802009-03-21 13:25:25 -07002610 mdio_write(netdev, nic->mii.phy_id, led_reg, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002611
2612 return 0;
2613}
2614
2615static const char e100_gstrings_stats[][ETH_GSTRING_LEN] = {
2616 "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
2617 "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
2618 "rx_length_errors", "rx_over_errors", "rx_crc_errors",
2619 "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
2620 "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
2621 "tx_heartbeat_errors", "tx_window_errors",
2622 /* device-specific stats */
2623 "tx_deferred", "tx_single_collisions", "tx_multi_collisions",
2624 "tx_flow_control_pause", "rx_flow_control_pause",
2625 "rx_flow_control_unsupported", "tx_tco_packets", "rx_tco_packets",
2626};
2627#define E100_NET_STATS_LEN 21
Alejandro Martinez Ruiz4c3616c2007-10-18 10:00:15 +02002628#define E100_STATS_LEN ARRAY_SIZE(e100_gstrings_stats)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002629
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002630static int e100_get_sset_count(struct net_device *netdev, int sset)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002631{
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002632 switch (sset) {
2633 case ETH_SS_TEST:
2634 return E100_TEST_LEN;
2635 case ETH_SS_STATS:
2636 return E100_STATS_LEN;
2637 default:
2638 return -EOPNOTSUPP;
2639 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002640}
2641
2642static void e100_get_ethtool_stats(struct net_device *netdev,
2643 struct ethtool_stats *stats, u64 *data)
2644{
2645 struct nic *nic = netdev_priv(netdev);
2646 int i;
2647
Bruce Allanf26251e2009-01-04 17:12:04 -08002648 for (i = 0; i < E100_NET_STATS_LEN; i++)
Jeff Garzik09f75cd2007-10-03 17:41:50 -07002649 data[i] = ((unsigned long *)&netdev->stats)[i];
Linus Torvalds1da177e2005-04-16 15:20:36 -07002650
2651 data[i++] = nic->tx_deferred;
2652 data[i++] = nic->tx_single_collisions;
2653 data[i++] = nic->tx_multiple_collisions;
2654 data[i++] = nic->tx_fc_pause;
2655 data[i++] = nic->rx_fc_pause;
2656 data[i++] = nic->rx_fc_unsupported;
2657 data[i++] = nic->tx_tco_frames;
2658 data[i++] = nic->rx_tco_frames;
2659}
2660
2661static void e100_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
2662{
Bruce Allanf26251e2009-01-04 17:12:04 -08002663 switch (stringset) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002664 case ETH_SS_TEST:
2665 memcpy(data, *e100_gstrings_test, sizeof(e100_gstrings_test));
2666 break;
2667 case ETH_SS_STATS:
2668 memcpy(data, *e100_gstrings_stats, sizeof(e100_gstrings_stats));
2669 break;
2670 }
2671}
2672
Jeff Garzik7282d492006-09-13 14:30:00 -04002673static const struct ethtool_ops e100_ethtool_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002674 .get_settings = e100_get_settings,
2675 .set_settings = e100_set_settings,
2676 .get_drvinfo = e100_get_drvinfo,
2677 .get_regs_len = e100_get_regs_len,
2678 .get_regs = e100_get_regs,
2679 .get_wol = e100_get_wol,
2680 .set_wol = e100_set_wol,
2681 .get_msglevel = e100_get_msglevel,
2682 .set_msglevel = e100_set_msglevel,
2683 .nway_reset = e100_nway_reset,
2684 .get_link = e100_get_link,
2685 .get_eeprom_len = e100_get_eeprom_len,
2686 .get_eeprom = e100_get_eeprom,
2687 .set_eeprom = e100_set_eeprom,
2688 .get_ringparam = e100_get_ringparam,
2689 .set_ringparam = e100_set_ringparam,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002690 .self_test = e100_diag_test,
2691 .get_strings = e100_get_strings,
2692 .phys_id = e100_phys_id,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002693 .get_ethtool_stats = e100_get_ethtool_stats,
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002694 .get_sset_count = e100_get_sset_count,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002695};
2696
2697static int e100_do_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2698{
2699 struct nic *nic = netdev_priv(netdev);
2700
2701 return generic_mii_ioctl(&nic->mii, if_mii(ifr), cmd, NULL);
2702}
2703
2704static int e100_alloc(struct nic *nic)
2705{
2706 nic->mem = pci_alloc_consistent(nic->pdev, sizeof(struct mem),
2707 &nic->dma_addr);
2708 return nic->mem ? 0 : -ENOMEM;
2709}
2710
2711static void e100_free(struct nic *nic)
2712{
Bruce Allanf26251e2009-01-04 17:12:04 -08002713 if (nic->mem) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002714 pci_free_consistent(nic->pdev, sizeof(struct mem),
2715 nic->mem, nic->dma_addr);
2716 nic->mem = NULL;
2717 }
2718}
2719
2720static int e100_open(struct net_device *netdev)
2721{
2722 struct nic *nic = netdev_priv(netdev);
2723 int err = 0;
2724
2725 netif_carrier_off(netdev);
Bruce Allanf26251e2009-01-04 17:12:04 -08002726 if ((err = e100_up(nic)))
Joe Perchesfa05e1a2010-03-16 21:24:32 -07002727 netif_err(nic, ifup, nic->netdev, "Cannot open interface, aborting\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002728 return err;
2729}
2730
2731static int e100_close(struct net_device *netdev)
2732{
2733 e100_down(netdev_priv(netdev));
2734 return 0;
2735}
2736
Stephen Hemmingeracc78422008-11-19 22:21:53 -08002737static const struct net_device_ops e100_netdev_ops = {
2738 .ndo_open = e100_open,
2739 .ndo_stop = e100_close,
Stephen Hemminger00829822008-11-20 20:14:53 -08002740 .ndo_start_xmit = e100_xmit_frame,
Stephen Hemmingeracc78422008-11-19 22:21:53 -08002741 .ndo_validate_addr = eth_validate_addr,
2742 .ndo_set_multicast_list = e100_set_multicast_list,
2743 .ndo_set_mac_address = e100_set_mac_address,
2744 .ndo_change_mtu = e100_change_mtu,
2745 .ndo_do_ioctl = e100_do_ioctl,
2746 .ndo_tx_timeout = e100_tx_timeout,
2747#ifdef CONFIG_NET_POLL_CONTROLLER
2748 .ndo_poll_controller = e100_netpoll,
2749#endif
2750};
2751
Linus Torvalds1da177e2005-04-16 15:20:36 -07002752static int __devinit e100_probe(struct pci_dev *pdev,
2753 const struct pci_device_id *ent)
2754{
2755 struct net_device *netdev;
2756 struct nic *nic;
2757 int err;
2758
Bruce Allanf26251e2009-01-04 17:12:04 -08002759 if (!(netdev = alloc_etherdev(sizeof(struct nic)))) {
2760 if (((1 << debug) - 1) & NETIF_MSG_PROBE)
Joe Perchesfa05e1a2010-03-16 21:24:32 -07002761 pr_err("Etherdev alloc failed, aborting\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002762 return -ENOMEM;
2763 }
2764
Stephen Hemmingeracc78422008-11-19 22:21:53 -08002765 netdev->netdev_ops = &e100_netdev_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002766 SET_ETHTOOL_OPS(netdev, &e100_ethtool_ops);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002767 netdev->watchdog_timeo = E100_WATCHDOG_PERIOD;
Auke Kok0eb5a342006-09-27 12:53:17 -07002768 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002769
2770 nic = netdev_priv(netdev);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002771 netif_napi_add(netdev, &nic->napi, e100_poll, E100_NAPI_WEIGHT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002772 nic->netdev = netdev;
2773 nic->pdev = pdev;
2774 nic->msg_enable = (1 << debug) - 1;
Andreas Mohr72001762009-06-10 09:55:04 +00002775 nic->mdio_ctrl = mdio_ctrl_hw;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002776 pci_set_drvdata(pdev, netdev);
2777
Bruce Allanf26251e2009-01-04 17:12:04 -08002778 if ((err = pci_enable_device(pdev))) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07002779 netif_err(nic, probe, nic->netdev, "Cannot enable PCI device, aborting\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002780 goto err_out_free_dev;
2781 }
2782
Bruce Allanf26251e2009-01-04 17:12:04 -08002783 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07002784 netif_err(nic, probe, nic->netdev, "Cannot find proper PCI device base address, aborting\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002785 err = -ENODEV;
2786 goto err_out_disable_pdev;
2787 }
2788
Bruce Allanf26251e2009-01-04 17:12:04 -08002789 if ((err = pci_request_regions(pdev, DRV_NAME))) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07002790 netif_err(nic, probe, nic->netdev, "Cannot obtain PCI resources, aborting\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002791 goto err_out_disable_pdev;
2792 }
2793
Yang Hongyang284901a2009-04-06 19:01:15 -07002794 if ((err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07002795 netif_err(nic, probe, nic->netdev, "No usable DMA configuration, aborting\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002796 goto err_out_free_res;
2797 }
2798
Linus Torvalds1da177e2005-04-16 15:20:36 -07002799 SET_NETDEV_DEV(netdev, &pdev->dev);
2800
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002801 if (use_io)
Joe Perchesfa05e1a2010-03-16 21:24:32 -07002802 netif_info(nic, probe, nic->netdev, "using i/o access mode\n");
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002803
2804 nic->csr = pci_iomap(pdev, (use_io ? 1 : 0), sizeof(struct csr));
Bruce Allanf26251e2009-01-04 17:12:04 -08002805 if (!nic->csr) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07002806 netif_err(nic, probe, nic->netdev, "Cannot map device registers, aborting\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002807 err = -ENOMEM;
2808 goto err_out_free_res;
2809 }
2810
Bruce Allanf26251e2009-01-04 17:12:04 -08002811 if (ent->driver_data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002812 nic->flags |= ich;
2813 else
2814 nic->flags &= ~ich;
2815
2816 e100_get_defaults(nic);
2817
Malli Chilakala1f533672005-04-28 19:17:20 -07002818 /* locks must be initialized before calling hw_reset */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002819 spin_lock_init(&nic->cb_lock);
2820 spin_lock_init(&nic->cmd_lock);
ODonnell, Michaelac7c6662006-01-11 11:26:22 -08002821 spin_lock_init(&nic->mdio_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002822
2823 /* Reset the device before pci_set_master() in case device is in some
2824 * funky state and has an interrupt pending - hint: we don't have the
2825 * interrupt handler registered yet. */
2826 e100_hw_reset(nic);
2827
2828 pci_set_master(pdev);
2829
2830 init_timer(&nic->watchdog);
2831 nic->watchdog.function = e100_watchdog;
2832 nic->watchdog.data = (unsigned long)nic;
2833 init_timer(&nic->blink_timer);
2834 nic->blink_timer.function = e100_blink_led;
2835 nic->blink_timer.data = (unsigned long)nic;
2836
David Howellsc4028952006-11-22 14:57:56 +00002837 INIT_WORK(&nic->tx_timeout_task, e100_tx_timeout_task);
Malli Chilakala2acdb1e2005-04-28 19:16:58 -07002838
Bruce Allanf26251e2009-01-04 17:12:04 -08002839 if ((err = e100_alloc(nic))) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07002840 netif_err(nic, probe, nic->netdev, "Cannot alloc driver memory, aborting\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002841 goto err_out_iounmap;
2842 }
2843
Bruce Allanf26251e2009-01-04 17:12:04 -08002844 if ((err = e100_eeprom_load(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002845 goto err_out_free;
2846
Malli Chilakalaf92d8722005-06-17 17:30:22 -07002847 e100_phy_init(nic);
2848
Linus Torvalds1da177e2005-04-16 15:20:36 -07002849 memcpy(netdev->dev_addr, nic->eeprom, ETH_ALEN);
John W. Linvillea92dd922005-09-12 10:48:56 -04002850 memcpy(netdev->perm_addr, nic->eeprom, ETH_ALEN);
Jesse Brandeburg948cd432007-04-26 09:43:11 -07002851 if (!is_valid_ether_addr(netdev->perm_addr)) {
2852 if (!eeprom_bad_csum_allow) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07002853 netif_err(nic, probe, nic->netdev, "Invalid MAC address from EEPROM, aborting\n");
Jesse Brandeburg948cd432007-04-26 09:43:11 -07002854 err = -EAGAIN;
2855 goto err_out_free;
2856 } else {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07002857 netif_err(nic, probe, nic->netdev, "Invalid MAC address from EEPROM, you MUST configure one.\n");
Jesse Brandeburg948cd432007-04-26 09:43:11 -07002858 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002859 }
2860
2861 /* Wol magic packet can be enabled from eeprom */
Bruce Allanf26251e2009-01-04 17:12:04 -08002862 if ((nic->mac >= mac_82558_D101_A4) &&
Rafael J. Wysockibc79fc82008-10-29 14:22:18 -07002863 (nic->eeprom[eeprom_id] & eeprom_id_wol)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002864 nic->flags |= wol_magic;
Rafael J. Wysockibc79fc82008-10-29 14:22:18 -07002865 device_set_wakeup_enable(&pdev->dev, true);
2866 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002867
Malli Chilakala6bdacb12005-04-28 19:17:54 -07002868 /* ack any pending wake events, disable PME */
Rafael J. Wysockie7272402008-08-08 00:18:04 +02002869 pci_pme_active(pdev, false);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002870
2871 strcpy(netdev->name, "eth%d");
Bruce Allanf26251e2009-01-04 17:12:04 -08002872 if ((err = register_netdev(netdev))) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07002873 netif_err(nic, probe, nic->netdev, "Cannot register net device, aborting\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002874 goto err_out_free;
2875 }
Roger Oksanen98468ef2009-11-29 17:17:29 -08002876 nic->cbs_pool = pci_pool_create(netdev->name,
2877 nic->pdev,
David S. Miller211a0d92010-03-15 15:23:30 -07002878 nic->params.cbs.max * sizeof(struct cb),
Roger Oksanen98468ef2009-11-29 17:17:29 -08002879 sizeof(u32),
2880 0);
Joe Perchesfa05e1a2010-03-16 21:24:32 -07002881 netif_info(nic, probe, nic->netdev,
2882 "addr 0x%llx, irq %d, MAC addr %pM\n",
2883 (unsigned long long)pci_resource_start(pdev, use_io ? 1 : 0),
2884 pdev->irq, netdev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002885
2886 return 0;
2887
2888err_out_free:
2889 e100_free(nic);
2890err_out_iounmap:
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002891 pci_iounmap(pdev, nic->csr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002892err_out_free_res:
2893 pci_release_regions(pdev);
2894err_out_disable_pdev:
2895 pci_disable_device(pdev);
2896err_out_free_dev:
2897 pci_set_drvdata(pdev, NULL);
2898 free_netdev(netdev);
2899 return err;
2900}
2901
2902static void __devexit e100_remove(struct pci_dev *pdev)
2903{
2904 struct net_device *netdev = pci_get_drvdata(pdev);
2905
Bruce Allanf26251e2009-01-04 17:12:04 -08002906 if (netdev) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002907 struct nic *nic = netdev_priv(netdev);
2908 unregister_netdev(netdev);
2909 e100_free(nic);
Jiri Slaby915e91d2008-01-29 22:49:16 +01002910 pci_iounmap(pdev, nic->csr);
Roger Oksanen98468ef2009-11-29 17:17:29 -08002911 pci_pool_destroy(nic->cbs_pool);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002912 free_netdev(netdev);
2913 pci_release_regions(pdev);
2914 pci_disable_device(pdev);
2915 pci_set_drvdata(pdev, NULL);
2916 }
2917}
2918
Bruce Allanb55de802009-03-21 13:25:25 -07002919#define E100_82552_SMARTSPEED 0x14 /* SmartSpeed Ctrl register */
2920#define E100_82552_REV_ANEG 0x0200 /* Reverse auto-negotiation */
2921#define E100_82552_ANEG_NOW 0x0400 /* Auto-negotiate now */
Thadeu Lima de Souza Cascardoac7c9922009-04-28 22:42:39 -07002922static void __e100_shutdown(struct pci_dev *pdev, bool *enable_wake)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002923{
2924 struct net_device *netdev = pci_get_drvdata(pdev);
2925 struct nic *nic = netdev_priv(netdev);
2926
Auke Kok824545e2006-10-24 14:49:44 -07002927 if (netif_running(netdev))
Auke Kokf9022832008-03-03 14:37:31 -08002928 e100_down(nic);
Auke Kok518d8332007-01-29 14:31:16 -08002929 netif_device_detach(netdev);
Auke Koka53a33d2007-01-31 11:02:46 -08002930
Linus Torvalds1da177e2005-04-16 15:20:36 -07002931 pci_save_state(pdev);
Auke Koke8e82b72006-10-19 23:28:12 -07002932
2933 if ((nic->flags & wol_magic) | e100_asf(nic)) {
Bruce Allanb55de802009-03-21 13:25:25 -07002934 /* enable reverse auto-negotiation */
2935 if (nic->phy == phy_82552_v) {
2936 u16 smartspeed = mdio_read(netdev, nic->mii.phy_id,
2937 E100_82552_SMARTSPEED);
2938
2939 mdio_write(netdev, nic->mii.phy_id,
2940 E100_82552_SMARTSPEED, smartspeed |
2941 E100_82552_REV_ANEG | E100_82552_ANEG_NOW);
2942 }
Thadeu Lima de Souza Cascardoac7c9922009-04-28 22:42:39 -07002943 *enable_wake = true;
Auke Koke8e82b72006-10-19 23:28:12 -07002944 } else {
Thadeu Lima de Souza Cascardoac7c9922009-04-28 22:42:39 -07002945 *enable_wake = false;
Auke Koke8e82b72006-10-19 23:28:12 -07002946 }
Auke Kok975b3662006-09-27 12:53:25 -07002947
Auke Kok8543da62007-12-12 16:30:42 -08002948 pci_disable_device(pdev);
Thadeu Lima de Souza Cascardoac7c9922009-04-28 22:42:39 -07002949}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002950
Thadeu Lima de Souza Cascardoac7c9922009-04-28 22:42:39 -07002951static int __e100_power_off(struct pci_dev *pdev, bool wake)
2952{
Rafael J. Wysocki6905b1f2009-06-14 09:46:46 +00002953 if (wake)
Thadeu Lima de Souza Cascardoac7c9922009-04-28 22:42:39 -07002954 return pci_prepare_to_sleep(pdev);
Rafael J. Wysocki6905b1f2009-06-14 09:46:46 +00002955
2956 pci_wake_from_d3(pdev, false);
2957 pci_set_power_state(pdev, PCI_D3hot);
2958
2959 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002960}
2961
Auke Kokf9022832008-03-03 14:37:31 -08002962#ifdef CONFIG_PM
Thadeu Lima de Souza Cascardoac7c9922009-04-28 22:42:39 -07002963static int e100_suspend(struct pci_dev *pdev, pm_message_t state)
2964{
2965 bool wake;
2966 __e100_shutdown(pdev, &wake);
2967 return __e100_power_off(pdev, wake);
2968}
2969
Linus Torvalds1da177e2005-04-16 15:20:36 -07002970static int e100_resume(struct pci_dev *pdev)
2971{
2972 struct net_device *netdev = pci_get_drvdata(pdev);
2973 struct nic *nic = netdev_priv(netdev);
2974
Auke Kok975b3662006-09-27 12:53:25 -07002975 pci_set_power_state(pdev, PCI_D0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002976 pci_restore_state(pdev);
Malli Chilakala6bdacb12005-04-28 19:17:54 -07002977 /* ack any pending wake events, disable PME */
Auke Kok975b3662006-09-27 12:53:25 -07002978 pci_enable_wake(pdev, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002979
Thadeu Lima de Souza Cascardo4b512d22009-04-14 23:14:10 -03002980 /* disable reverse auto-negotiation */
Bruce Allanb55de802009-03-21 13:25:25 -07002981 if (nic->phy == phy_82552_v) {
2982 u16 smartspeed = mdio_read(netdev, nic->mii.phy_id,
2983 E100_82552_SMARTSPEED);
2984
2985 mdio_write(netdev, nic->mii.phy_id,
2986 E100_82552_SMARTSPEED,
2987 smartspeed & ~(E100_82552_REV_ANEG));
2988 }
2989
Linus Torvalds1da177e2005-04-16 15:20:36 -07002990 netif_device_attach(netdev);
Auke Kok975b3662006-09-27 12:53:25 -07002991 if (netif_running(netdev))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002992 e100_up(nic);
2993
2994 return 0;
2995}
Auke Kok975b3662006-09-27 12:53:25 -07002996#endif /* CONFIG_PM */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002997
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07002998static void e100_shutdown(struct pci_dev *pdev)
Malli Chilakala6bdacb12005-04-28 19:17:54 -07002999{
Thadeu Lima de Souza Cascardoac7c9922009-04-28 22:42:39 -07003000 bool wake;
3001 __e100_shutdown(pdev, &wake);
3002 if (system_state == SYSTEM_POWER_OFF)
3003 __e100_power_off(pdev, wake);
Malli Chilakala6bdacb12005-04-28 19:17:54 -07003004}
3005
Auke Kok2cc30492006-06-08 09:30:18 -07003006/* ------------------ PCI Error Recovery infrastructure -------------- */
3007/**
3008 * e100_io_error_detected - called when PCI error is detected.
3009 * @pdev: Pointer to PCI device
Andreas Mohr0a0863a2008-02-01 08:21:39 -08003010 * @state: The current pci connection state
Auke Kok2cc30492006-06-08 09:30:18 -07003011 */
3012static pci_ers_result_t e100_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
3013{
3014 struct net_device *netdev = pci_get_drvdata(pdev);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07003015 struct nic *nic = netdev_priv(netdev);
Auke Kok2cc30492006-06-08 09:30:18 -07003016
Auke Kok2cc30492006-06-08 09:30:18 -07003017 netif_device_detach(netdev);
Andre Detschef681ce2009-06-08 00:42:30 -07003018
3019 if (state == pci_channel_io_perm_failure)
3020 return PCI_ERS_RESULT_DISCONNECT;
3021
3022 if (netif_running(netdev))
3023 e100_down(nic);
Linas Vepstasb1d26f22006-08-31 14:27:48 -07003024 pci_disable_device(pdev);
Auke Kok2cc30492006-06-08 09:30:18 -07003025
3026 /* Request a slot reset. */
3027 return PCI_ERS_RESULT_NEED_RESET;
3028}
3029
3030/**
3031 * e100_io_slot_reset - called after the pci bus has been reset.
3032 * @pdev: Pointer to PCI device
3033 *
3034 * Restart the card from scratch.
3035 */
3036static pci_ers_result_t e100_io_slot_reset(struct pci_dev *pdev)
3037{
3038 struct net_device *netdev = pci_get_drvdata(pdev);
3039 struct nic *nic = netdev_priv(netdev);
3040
3041 if (pci_enable_device(pdev)) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07003042 pr_err("Cannot re-enable PCI device after reset\n");
Auke Kok2cc30492006-06-08 09:30:18 -07003043 return PCI_ERS_RESULT_DISCONNECT;
3044 }
3045 pci_set_master(pdev);
3046
3047 /* Only one device per card can do a reset */
3048 if (0 != PCI_FUNC(pdev->devfn))
3049 return PCI_ERS_RESULT_RECOVERED;
3050 e100_hw_reset(nic);
3051 e100_phy_init(nic);
3052
3053 return PCI_ERS_RESULT_RECOVERED;
3054}
3055
3056/**
3057 * e100_io_resume - resume normal operations
3058 * @pdev: Pointer to PCI device
3059 *
3060 * Resume normal operations after an error recovery
3061 * sequence has been completed.
3062 */
3063static void e100_io_resume(struct pci_dev *pdev)
3064{
3065 struct net_device *netdev = pci_get_drvdata(pdev);
3066 struct nic *nic = netdev_priv(netdev);
3067
3068 /* ack any pending wake events, disable PME */
3069 pci_enable_wake(pdev, 0, 0);
3070
3071 netif_device_attach(netdev);
3072 if (netif_running(netdev)) {
3073 e100_open(netdev);
3074 mod_timer(&nic->watchdog, jiffies);
3075 }
3076}
3077
3078static struct pci_error_handlers e100_err_handler = {
3079 .error_detected = e100_io_error_detected,
3080 .slot_reset = e100_io_slot_reset,
3081 .resume = e100_io_resume,
3082};
Malli Chilakala6bdacb12005-04-28 19:17:54 -07003083
Linus Torvalds1da177e2005-04-16 15:20:36 -07003084static struct pci_driver e100_driver = {
3085 .name = DRV_NAME,
3086 .id_table = e100_id_table,
3087 .probe = e100_probe,
3088 .remove = __devexit_p(e100_remove),
Auke Koke8e82b72006-10-19 23:28:12 -07003089#ifdef CONFIG_PM
Auke Kok975b3662006-09-27 12:53:25 -07003090 /* Power Management hooks */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003091 .suspend = e100_suspend,
3092 .resume = e100_resume,
3093#endif
Jesse Brandeburg05479932006-01-17 15:01:10 -08003094 .shutdown = e100_shutdown,
Auke Kok2cc30492006-06-08 09:30:18 -07003095 .err_handler = &e100_err_handler,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003096};
3097
3098static int __init e100_init_module(void)
3099{
Bruce Allanf26251e2009-01-04 17:12:04 -08003100 if (((1 << debug) - 1) & NETIF_MSG_DRV) {
Joe Perchesfa05e1a2010-03-16 21:24:32 -07003101 pr_info("%s, %s\n", DRV_DESCRIPTION, DRV_VERSION);
3102 pr_info("%s\n", DRV_COPYRIGHT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003103 }
Jeff Garzik29917622006-08-19 17:48:59 -04003104 return pci_register_driver(&e100_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003105}
3106
3107static void __exit e100_cleanup_module(void)
3108{
3109 pci_unregister_driver(&e100_driver);
3110}
3111
3112module_init(e100_init_module);
3113module_exit(e100_cleanup_module);