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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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150#include <linux/module.h>
151#include <linux/moduleparam.h>
152#include <linux/kernel.h>
153#include <linux/types.h>
154#include <linux/slab.h>
155#include <linux/delay.h>
156#include <linux/init.h>
157#include <linux/pci.h>
Domen Puncer1e7f0bd2005-06-26 18:22:14 -0400158#include <linux/dma-mapping.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159#include <linux/netdevice.h>
160#include <linux/etherdevice.h>
161#include <linux/mii.h>
162#include <linux/if_vlan.h>
163#include <linux/skbuff.h>
164#include <linux/ethtool.h>
165#include <linux/string.h>
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -0800166#include <linux/firmware.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167#include <asm/unaligned.h>
168
169
170#define DRV_NAME "e100"
Auke Kok4e1dc972006-08-16 11:28:35 -0700171#define DRV_EXT "-NAPI"
Bruce Allanb55de802009-03-21 13:25:25 -0700172#define DRV_VERSION "3.5.24-k2"DRV_EXT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173#define DRV_DESCRIPTION "Intel(R) PRO/100 Network Driver"
Auke Kok4e1dc972006-08-16 11:28:35 -0700174#define DRV_COPYRIGHT "Copyright(c) 1999-2006 Intel Corporation"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175#define PFX DRV_NAME ": "
176
177#define E100_WATCHDOG_PERIOD (2 * HZ)
178#define E100_NAPI_WEIGHT 16
179
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -0800180#define FIRMWARE_D101M "e100/d101m_ucode.bin"
181#define FIRMWARE_D101S "e100/d101s_ucode.bin"
182#define FIRMWARE_D102E "e100/d102e_ucode.bin"
183
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184MODULE_DESCRIPTION(DRV_DESCRIPTION);
185MODULE_AUTHOR(DRV_COPYRIGHT);
186MODULE_LICENSE("GPL");
187MODULE_VERSION(DRV_VERSION);
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -0800188MODULE_FIRMWARE(FIRMWARE_D101M);
189MODULE_FIRMWARE(FIRMWARE_D101S);
190MODULE_FIRMWARE(FIRMWARE_D102E);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191
192static int debug = 3;
David S. Miller8fb6f732006-08-28 22:12:54 -0700193static int eeprom_bad_csum_allow = 0;
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700194static int use_io = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195module_param(debug, int, 0);
David S. Miller8fb6f732006-08-28 22:12:54 -0700196module_param(eeprom_bad_csum_allow, int, 0);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700197module_param(use_io, int, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
David S. Miller8fb6f732006-08-28 22:12:54 -0700199MODULE_PARM_DESC(eeprom_bad_csum_allow, "Allow bad eeprom checksums");
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700200MODULE_PARM_DESC(use_io, "Force use of i/o access mode");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201#define DPRINTK(nlevel, klevel, fmt, args...) \
202 (void)((NETIF_MSG_##nlevel & nic->msg_enable) && \
203 printk(KERN_##klevel PFX "%s: %s: " fmt, nic->netdev->name, \
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700204 __func__ , ## args))
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 }
209static struct pci_device_id e100_id_table[] = {
210 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
604 dma_addr_t cbs_dma_addr;
605 u8 adaptive_ifs;
606 u8 tx_threshold;
607 u32 tx_frames;
608 u32 tx_collisions;
609 u32 tx_deferred;
610 u32 tx_single_collisions;
611 u32 tx_multiple_collisions;
612 u32 tx_fc_pause;
613 u32 tx_tco_frames;
614
615 u32 rx_fc_pause;
616 u32 rx_fc_unsupported;
617 u32 rx_tco_frames;
618 u32 rx_over_length_errors;
619
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620 u16 leds;
621 u16 eeprom_wc;
Al Viroaaf918b2007-12-10 18:32:49 +0000622 __le16 eeprom[256];
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800623 spinlock_t mdio_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624};
625
626static inline void e100_write_flush(struct nic *nic)
627{
628 /* Flush previous PCI writes through intermediate bridges
629 * by doing a benign read */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700630 (void)ioread8(&nic->csr->scb.status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631}
632
Arjan van de Ven858119e2006-01-14 13:20:43 -0800633static void e100_enable_irq(struct nic *nic)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634{
635 unsigned long flags;
636
637 spin_lock_irqsave(&nic->cmd_lock, flags);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700638 iowrite8(irq_mask_none, &nic->csr->scb.cmd_hi);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700639 e100_write_flush(nic);
Catalin(ux aka Dino) BOIEad8c48a2006-03-04 12:18:59 -0500640 spin_unlock_irqrestore(&nic->cmd_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641}
642
Arjan van de Ven858119e2006-01-14 13:20:43 -0800643static void e100_disable_irq(struct nic *nic)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644{
645 unsigned long flags;
646
647 spin_lock_irqsave(&nic->cmd_lock, flags);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700648 iowrite8(irq_mask_all, &nic->csr->scb.cmd_hi);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649 e100_write_flush(nic);
Catalin(ux aka Dino) BOIEad8c48a2006-03-04 12:18:59 -0500650 spin_unlock_irqrestore(&nic->cmd_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651}
652
653static void e100_hw_reset(struct nic *nic)
654{
655 /* Put CU and RU into idle with a selective reset to get
656 * device off of PCI bus */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700657 iowrite32(selective_reset, &nic->csr->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658 e100_write_flush(nic); udelay(20);
659
660 /* Now fully reset device */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700661 iowrite32(software_reset, &nic->csr->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 e100_write_flush(nic); udelay(20);
663
664 /* Mask off our interrupt line - it's unmasked after reset */
665 e100_disable_irq(nic);
666}
667
668static int e100_self_test(struct nic *nic)
669{
670 u32 dma_addr = nic->dma_addr + offsetof(struct mem, selftest);
671
672 /* Passing the self-test is a pretty good indication
673 * that the device can DMA to/from host memory */
674
675 nic->mem->selftest.signature = 0;
676 nic->mem->selftest.result = 0xFFFFFFFF;
677
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700678 iowrite32(selftest | dma_addr, &nic->csr->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700679 e100_write_flush(nic);
680 /* Wait 10 msec for self-test to complete */
681 msleep(10);
682
683 /* Interrupts are enabled after self-test */
684 e100_disable_irq(nic);
685
686 /* Check results of self-test */
Bruce Allanf26251e2009-01-04 17:12:04 -0800687 if (nic->mem->selftest.result != 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688 DPRINTK(HW, ERR, "Self-test failed: result=0x%08X\n",
689 nic->mem->selftest.result);
690 return -ETIMEDOUT;
691 }
Bruce Allanf26251e2009-01-04 17:12:04 -0800692 if (nic->mem->selftest.signature == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700693 DPRINTK(HW, ERR, "Self-test failed: timed out\n");
694 return -ETIMEDOUT;
695 }
696
697 return 0;
698}
699
Al Viroaaf918b2007-12-10 18:32:49 +0000700static void e100_eeprom_write(struct nic *nic, u16 addr_len, u16 addr, __le16 data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701{
702 u32 cmd_addr_data[3];
703 u8 ctrl;
704 int i, j;
705
706 /* Three cmds: write/erase enable, write data, write/erase disable */
707 cmd_addr_data[0] = op_ewen << (addr_len - 2);
708 cmd_addr_data[1] = (((op_write << addr_len) | addr) << 16) |
Al Viroaaf918b2007-12-10 18:32:49 +0000709 le16_to_cpu(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710 cmd_addr_data[2] = op_ewds << (addr_len - 2);
711
712 /* Bit-bang cmds to write word to eeprom */
Bruce Allanf26251e2009-01-04 17:12:04 -0800713 for (j = 0; j < 3; j++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714
715 /* Chip select */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700716 iowrite8(eecs | eesk, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717 e100_write_flush(nic); udelay(4);
718
Bruce Allanf26251e2009-01-04 17:12:04 -0800719 for (i = 31; i >= 0; i--) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720 ctrl = (cmd_addr_data[j] & (1 << i)) ?
721 eecs | eedi : eecs;
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700722 iowrite8(ctrl, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723 e100_write_flush(nic); udelay(4);
724
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700725 iowrite8(ctrl | eesk, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726 e100_write_flush(nic); udelay(4);
727 }
728 /* Wait 10 msec for cmd to complete */
729 msleep(10);
730
731 /* Chip deselect */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700732 iowrite8(0, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733 e100_write_flush(nic); udelay(4);
734 }
735};
736
737/* General technique stolen from the eepro100 driver - very clever */
Al Viroaaf918b2007-12-10 18:32:49 +0000738static __le16 e100_eeprom_read(struct nic *nic, u16 *addr_len, u16 addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739{
740 u32 cmd_addr_data;
741 u16 data = 0;
742 u8 ctrl;
743 int i;
744
745 cmd_addr_data = ((op_read << *addr_len) | addr) << 16;
746
747 /* Chip select */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700748 iowrite8(eecs | eesk, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749 e100_write_flush(nic); udelay(4);
750
751 /* Bit-bang to read word from eeprom */
Bruce Allanf26251e2009-01-04 17:12:04 -0800752 for (i = 31; i >= 0; i--) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700753 ctrl = (cmd_addr_data & (1 << i)) ? eecs | eedi : eecs;
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700754 iowrite8(ctrl, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700755 e100_write_flush(nic); udelay(4);
Jesse Brandeburg05479932006-01-17 15:01:10 -0800756
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700757 iowrite8(ctrl | eesk, &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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760 /* Eeprom drives a dummy zero to EEDO after receiving
761 * complete address. Use this to adjust addr_len. */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700762 ctrl = ioread8(&nic->csr->eeprom_ctrl_lo);
Bruce Allanf26251e2009-01-04 17:12:04 -0800763 if (!(ctrl & eedo) && i > 16) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700764 *addr_len -= (i - 16);
765 i = 17;
766 }
Jesse Brandeburg05479932006-01-17 15:01:10 -0800767
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 data = (data << 1) | (ctrl & eedo ? 1 : 0);
769 }
770
771 /* Chip deselect */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700772 iowrite8(0, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700773 e100_write_flush(nic); udelay(4);
774
Al Viroaaf918b2007-12-10 18:32:49 +0000775 return cpu_to_le16(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776};
777
778/* Load entire EEPROM image into driver cache and validate checksum */
779static int e100_eeprom_load(struct nic *nic)
780{
781 u16 addr, addr_len = 8, checksum = 0;
782
783 /* Try reading with an 8-bit addr len to discover actual addr len */
784 e100_eeprom_read(nic, &addr_len, 0);
785 nic->eeprom_wc = 1 << addr_len;
786
Bruce Allanf26251e2009-01-04 17:12:04 -0800787 for (addr = 0; addr < nic->eeprom_wc; addr++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700788 nic->eeprom[addr] = e100_eeprom_read(nic, &addr_len, addr);
Bruce Allanf26251e2009-01-04 17:12:04 -0800789 if (addr < nic->eeprom_wc - 1)
Al Viroaaf918b2007-12-10 18:32:49 +0000790 checksum += le16_to_cpu(nic->eeprom[addr]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791 }
792
793 /* The checksum, stored in the last word, is calculated such that
794 * the sum of words should be 0xBABA */
Al Viroaaf918b2007-12-10 18:32:49 +0000795 if (cpu_to_le16(0xBABA - checksum) != nic->eeprom[nic->eeprom_wc - 1]) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796 DPRINTK(PROBE, ERR, "EEPROM corrupted\n");
David S. Miller8fb6f732006-08-28 22:12:54 -0700797 if (!eeprom_bad_csum_allow)
798 return -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700799 }
800
801 return 0;
802}
803
804/* Save (portion of) driver EEPROM cache to device and update checksum */
805static int e100_eeprom_save(struct nic *nic, u16 start, u16 count)
806{
807 u16 addr, addr_len = 8, checksum = 0;
808
809 /* Try reading with an 8-bit addr len to discover actual addr len */
810 e100_eeprom_read(nic, &addr_len, 0);
811 nic->eeprom_wc = 1 << addr_len;
812
Bruce Allanf26251e2009-01-04 17:12:04 -0800813 if (start + count >= nic->eeprom_wc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814 return -EINVAL;
815
Bruce Allanf26251e2009-01-04 17:12:04 -0800816 for (addr = start; addr < start + count; addr++)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817 e100_eeprom_write(nic, addr_len, addr, nic->eeprom[addr]);
818
819 /* The checksum, stored in the last word, is calculated such that
820 * the sum of words should be 0xBABA */
Bruce Allanf26251e2009-01-04 17:12:04 -0800821 for (addr = 0; addr < nic->eeprom_wc - 1; addr++)
Al Viroaaf918b2007-12-10 18:32:49 +0000822 checksum += le16_to_cpu(nic->eeprom[addr]);
823 nic->eeprom[nic->eeprom_wc - 1] = cpu_to_le16(0xBABA - checksum);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700824 e100_eeprom_write(nic, addr_len, nic->eeprom_wc - 1,
825 nic->eeprom[nic->eeprom_wc - 1]);
826
827 return 0;
828}
829
Malli Chilakala962082b2005-04-28 19:19:46 -0700830#define E100_WAIT_SCB_TIMEOUT 20000 /* we might have to wait 100ms!!! */
Malli Chilakalae6280f22005-08-25 13:06:23 -0700831#define E100_WAIT_SCB_FAST 20 /* delay like the old code */
Arjan van de Ven858119e2006-01-14 13:20:43 -0800832static int e100_exec_cmd(struct nic *nic, u8 cmd, dma_addr_t dma_addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700833{
834 unsigned long flags;
835 unsigned int i;
836 int err = 0;
837
838 spin_lock_irqsave(&nic->cmd_lock, flags);
839
840 /* Previous command is accepted when SCB clears */
Bruce Allanf26251e2009-01-04 17:12:04 -0800841 for (i = 0; i < E100_WAIT_SCB_TIMEOUT; i++) {
842 if (likely(!ioread8(&nic->csr->scb.cmd_lo)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843 break;
844 cpu_relax();
Bruce Allanf26251e2009-01-04 17:12:04 -0800845 if (unlikely(i > E100_WAIT_SCB_FAST))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846 udelay(5);
847 }
Bruce Allanf26251e2009-01-04 17:12:04 -0800848 if (unlikely(i == E100_WAIT_SCB_TIMEOUT)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849 err = -EAGAIN;
850 goto err_unlock;
851 }
852
Bruce Allanf26251e2009-01-04 17:12:04 -0800853 if (unlikely(cmd != cuc_resume))
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700854 iowrite32(dma_addr, &nic->csr->scb.gen_ptr);
855 iowrite8(cmd, &nic->csr->scb.cmd_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856
857err_unlock:
858 spin_unlock_irqrestore(&nic->cmd_lock, flags);
859
860 return err;
861}
862
Arjan van de Ven858119e2006-01-14 13:20:43 -0800863static int e100_exec_cb(struct nic *nic, struct sk_buff *skb,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700864 void (*cb_prepare)(struct nic *, struct cb *, struct sk_buff *))
865{
866 struct cb *cb;
867 unsigned long flags;
868 int err = 0;
869
870 spin_lock_irqsave(&nic->cb_lock, flags);
871
Bruce Allanf26251e2009-01-04 17:12:04 -0800872 if (unlikely(!nic->cbs_avail)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700873 err = -ENOMEM;
874 goto err_unlock;
875 }
876
877 cb = nic->cb_to_use;
878 nic->cb_to_use = cb->next;
879 nic->cbs_avail--;
880 cb->skb = skb;
881
Bruce Allanf26251e2009-01-04 17:12:04 -0800882 if (unlikely(!nic->cbs_avail))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883 err = -ENOSPC;
884
885 cb_prepare(nic, cb, skb);
886
887 /* Order is important otherwise we'll be in a race with h/w:
888 * set S-bit in current first, then clear S-bit in previous. */
889 cb->command |= cpu_to_le16(cb_s);
890 wmb();
891 cb->prev->command &= cpu_to_le16(~cb_s);
892
Bruce Allanf26251e2009-01-04 17:12:04 -0800893 while (nic->cb_to_send != nic->cb_to_use) {
894 if (unlikely(e100_exec_cmd(nic, nic->cuc_cmd,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895 nic->cb_to_send->dma_addr))) {
896 /* Ok, here's where things get sticky. It's
897 * possible that we can't schedule the command
898 * because the controller is too busy, so
899 * let's just queue the command and try again
900 * when another command is scheduled. */
Bruce Allanf26251e2009-01-04 17:12:04 -0800901 if (err == -ENOSPC) {
Malli Chilakala962082b2005-04-28 19:19:46 -0700902 //request a reset
903 schedule_work(&nic->tx_timeout_task);
904 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700905 break;
906 } else {
907 nic->cuc_cmd = cuc_resume;
908 nic->cb_to_send = nic->cb_to_send->next;
909 }
910 }
911
912err_unlock:
913 spin_unlock_irqrestore(&nic->cb_lock, flags);
914
915 return err;
916}
917
Andreas Mohr72001762009-06-10 09:55:04 +0000918static int mdio_read(struct net_device *netdev, int addr, int reg)
919{
920 struct nic *nic = netdev_priv(netdev);
921 return nic->mdio_ctrl(nic, addr, mdi_read, reg, 0);
922}
923
924static void mdio_write(struct net_device *netdev, int addr, int reg, int data)
925{
926 struct nic *nic = netdev_priv(netdev);
927
928 nic->mdio_ctrl(nic, addr, mdi_write, reg, data);
929}
930
931/* the standard mdio_ctrl() function for usual MII-compliant hardware */
932static u16 mdio_ctrl_hw(struct nic *nic, u32 addr, u32 dir, u32 reg, u16 data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700933{
934 u32 data_out = 0;
935 unsigned int i;
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800936 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800938
939 /*
940 * Stratus87247: we shouldn't be writing the MDI control
941 * register until the Ready bit shows True. Also, since
942 * manipulation of the MDI control registers is a multi-step
943 * procedure it should be done under lock.
944 */
945 spin_lock_irqsave(&nic->mdio_lock, flags);
946 for (i = 100; i; --i) {
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700947 if (ioread32(&nic->csr->mdi_ctrl) & mdi_ready)
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800948 break;
949 udelay(20);
950 }
951 if (unlikely(!i)) {
952 printk("e100.mdio_ctrl(%s) won't go Ready\n",
953 nic->netdev->name );
954 spin_unlock_irqrestore(&nic->mdio_lock, flags);
955 return 0; /* No way to indicate timeout error */
956 }
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700957 iowrite32((reg << 16) | (addr << 21) | dir | data, &nic->csr->mdi_ctrl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800959 for (i = 0; i < 100; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700960 udelay(20);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700961 if ((data_out = ioread32(&nic->csr->mdi_ctrl)) & mdi_ready)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962 break;
963 }
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800964 spin_unlock_irqrestore(&nic->mdio_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700965 DPRINTK(HW, DEBUG,
966 "%s:addr=%d, reg=%d, data_in=0x%04X, data_out=0x%04X\n",
967 dir == mdi_read ? "READ" : "WRITE", addr, reg, data, data_out);
968 return (u16)data_out;
969}
970
Andreas Mohr72001762009-06-10 09:55:04 +0000971/* slightly tweaked mdio_ctrl() function for phy_82552_v specifics */
972static u16 mdio_ctrl_phy_82552_v(struct nic *nic,
973 u32 addr,
974 u32 dir,
975 u32 reg,
976 u16 data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700977{
Andreas Mohr72001762009-06-10 09:55:04 +0000978 if ((reg == MII_BMCR) && (dir == mdi_write)) {
979 if (data & (BMCR_ANRESTART | BMCR_ANENABLE)) {
980 u16 advert = mdio_read(nic->netdev, nic->mii.phy_id,
981 MII_ADVERTISE);
982
983 /*
984 * Workaround Si issue where sometimes the part will not
985 * autoneg to 100Mbps even when advertised.
986 */
987 if (advert & ADVERTISE_100FULL)
988 data |= BMCR_SPEED100 | BMCR_FULLDPLX;
989 else if (advert & ADVERTISE_100HALF)
990 data |= BMCR_SPEED100;
991 }
992 }
993 return mdio_ctrl_hw(nic, addr, dir, reg, data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700994}
995
Andreas Mohr72001762009-06-10 09:55:04 +0000996/* Fully software-emulated mdio_ctrl() function for cards without
997 * MII-compliant PHYs.
998 * For now, this is mainly geared towards 80c24 support; in case of further
999 * requirements for other types (i82503, ...?) either extend this mechanism
1000 * or split it, whichever is cleaner.
1001 */
1002static u16 mdio_ctrl_phy_mii_emulated(struct nic *nic,
1003 u32 addr,
1004 u32 dir,
1005 u32 reg,
1006 u16 data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007{
Andreas Mohr72001762009-06-10 09:55:04 +00001008 /* might need to allocate a netdev_priv'ed register array eventually
1009 * to be able to record state changes, but for now
1010 * some fully hardcoded register handling ought to be ok I guess. */
Bruce Allanb55de802009-03-21 13:25:25 -07001011
Andreas Mohr72001762009-06-10 09:55:04 +00001012 if (dir == mdi_read) {
1013 switch (reg) {
1014 case MII_BMCR:
1015 /* Auto-negotiation, right? */
1016 return BMCR_ANENABLE |
1017 BMCR_FULLDPLX;
1018 case MII_BMSR:
1019 return BMSR_LSTATUS /* for mii_link_ok() */ |
1020 BMSR_ANEGCAPABLE |
1021 BMSR_10FULL;
1022 case MII_ADVERTISE:
1023 /* 80c24 is a "combo card" PHY, right? */
1024 return ADVERTISE_10HALF |
1025 ADVERTISE_10FULL;
1026 default:
1027 DPRINTK(HW, DEBUG,
1028 "%s:addr=%d, reg=%d, data=0x%04X: unimplemented emulation!\n",
1029 dir == mdi_read ? "READ" : "WRITE", addr, reg, data);
1030 return 0xFFFF;
1031 }
1032 } else {
1033 switch (reg) {
1034 default:
1035 DPRINTK(HW, DEBUG,
1036 "%s:addr=%d, reg=%d, data=0x%04X: unimplemented emulation!\n",
1037 dir == mdi_read ? "READ" : "WRITE", addr, reg, data);
1038 return 0xFFFF;
1039 }
Bruce Allanb55de802009-03-21 13:25:25 -07001040 }
Andreas Mohr72001762009-06-10 09:55:04 +00001041}
1042static inline int e100_phy_supports_mii(struct nic *nic)
1043{
1044 /* for now, just check it by comparing whether we
1045 are using MII software emulation.
1046 */
1047 return (nic->mdio_ctrl != mdio_ctrl_phy_mii_emulated);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001048}
1049
1050static void e100_get_defaults(struct nic *nic)
1051{
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001052 struct param_range rfds = { .min = 16, .max = 256, .count = 256 };
1053 struct param_range cbs = { .min = 64, .max = 256, .count = 128 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07001054
Linus Torvalds1da177e2005-04-16 15:20:36 -07001055 /* MAC type is encoded as rev ID; exception: ICH is treated as 82559 */
Auke Kok44c10132007-06-08 15:46:36 -07001056 nic->mac = (nic->flags & ich) ? mac_82559_D101M : nic->pdev->revision;
Bruce Allanf26251e2009-01-04 17:12:04 -08001057 if (nic->mac == mac_unknown)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001058 nic->mac = mac_82557_D100_A;
1059
1060 nic->params.rfds = rfds;
1061 nic->params.cbs = cbs;
1062
1063 /* Quadwords to DMA into FIFO before starting frame transmit */
1064 nic->tx_threshold = 0xE0;
1065
Andreas Mohr0a0863a2008-02-01 08:21:39 -08001066 /* no interrupt for every tx completion, delay = 256us if not 557 */
Malli Chilakala962082b2005-04-28 19:19:46 -07001067 nic->tx_command = cpu_to_le16(cb_tx | cb_tx_sf |
1068 ((nic->mac >= mac_82558_D101_A4) ? cb_cid : cb_i));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001069
1070 /* Template for a freshly allocated RFD */
David Acker7734f6e2007-11-08 10:17:41 -08001071 nic->blank_rfd.command = 0;
Al Viro11728992008-03-16 22:21:44 +00001072 nic->blank_rfd.rbd = cpu_to_le32(0xFFFFFFFF);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001073 nic->blank_rfd.size = cpu_to_le16(VLAN_ETH_FRAME_LEN);
1074
1075 /* MII setup */
1076 nic->mii.phy_id_mask = 0x1F;
1077 nic->mii.reg_num_mask = 0x1F;
1078 nic->mii.dev = nic->netdev;
1079 nic->mii.mdio_read = mdio_read;
1080 nic->mii.mdio_write = mdio_write;
1081}
1082
1083static void e100_configure(struct nic *nic, struct cb *cb, struct sk_buff *skb)
1084{
1085 struct config *config = &cb->u.config;
1086 u8 *c = (u8 *)config;
1087
1088 cb->command = cpu_to_le16(cb_config);
1089
1090 memset(config, 0, sizeof(struct config));
1091
1092 config->byte_count = 0x16; /* bytes in this struct */
1093 config->rx_fifo_limit = 0x8; /* bytes in FIFO before DMA */
1094 config->direct_rx_dma = 0x1; /* reserved */
1095 config->standard_tcb = 0x1; /* 1=standard, 0=extended */
1096 config->standard_stat_counter = 0x1; /* 1=standard, 0=extended */
1097 config->rx_discard_short_frames = 0x1; /* 1=discard, 0=pass */
1098 config->tx_underrun_retry = 0x3; /* # of underrun retries */
Andreas Mohr72001762009-06-10 09:55:04 +00001099 if (e100_phy_supports_mii(nic))
1100 config->mii_mode = 1; /* 1=MII mode, 0=i82503 mode */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001101 config->pad10 = 0x6;
1102 config->no_source_addr_insertion = 0x1; /* 1=no, 0=yes */
1103 config->preamble_length = 0x2; /* 0=1, 1=3, 2=7, 3=15 bytes */
1104 config->ifs = 0x6; /* x16 = inter frame spacing */
1105 config->ip_addr_hi = 0xF2; /* ARP IP filter - not used */
1106 config->pad15_1 = 0x1;
1107 config->pad15_2 = 0x1;
1108 config->crs_or_cdt = 0x0; /* 0=CRS only, 1=CRS or CDT */
1109 config->fc_delay_hi = 0x40; /* time delay for fc frame */
1110 config->tx_padding = 0x1; /* 1=pad short frames */
1111 config->fc_priority_threshold = 0x7; /* 7=priority fc disabled */
1112 config->pad18 = 0x1;
1113 config->full_duplex_pin = 0x1; /* 1=examine FDX# pin */
1114 config->pad20_1 = 0x1F;
1115 config->fc_priority_location = 0x1; /* 1=byte#31, 0=byte#19 */
1116 config->pad21_1 = 0x5;
1117
1118 config->adaptive_ifs = nic->adaptive_ifs;
1119 config->loopback = nic->loopback;
1120
Bruce Allanf26251e2009-01-04 17:12:04 -08001121 if (nic->mii.force_media && nic->mii.full_duplex)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001122 config->full_duplex_force = 0x1; /* 1=force, 0=auto */
1123
Bruce Allanf26251e2009-01-04 17:12:04 -08001124 if (nic->flags & promiscuous || nic->loopback) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001125 config->rx_save_bad_frames = 0x1; /* 1=save, 0=discard */
1126 config->rx_discard_short_frames = 0x0; /* 1=discard, 0=save */
1127 config->promiscuous_mode = 0x1; /* 1=on, 0=off */
1128 }
1129
Bruce Allanf26251e2009-01-04 17:12:04 -08001130 if (nic->flags & multicast_all)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001131 config->multicast_all = 0x1; /* 1=accept, 0=no */
1132
Malli Chilakala6bdacb12005-04-28 19:17:54 -07001133 /* disable WoL when up */
Bruce Allanf26251e2009-01-04 17:12:04 -08001134 if (netif_running(nic->netdev) || !(nic->flags & wol_magic))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001135 config->magic_packet_disable = 0x1; /* 1=off, 0=on */
1136
Bruce Allanf26251e2009-01-04 17:12:04 -08001137 if (nic->mac >= mac_82558_D101_A4) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001138 config->fc_disable = 0x1; /* 1=Tx fc off, 0=Tx fc on */
1139 config->mwi_enable = 0x1; /* 1=enable, 0=disable */
1140 config->standard_tcb = 0x0; /* 1=standard, 0=extended */
1141 config->rx_long_ok = 0x1; /* 1=VLANs ok, 0=standard */
David Graham44e49252007-07-10 08:45:11 -07001142 if (nic->mac >= mac_82559_D101M) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001143 config->tno_intr = 0x1; /* TCO stats enable */
David Graham44e49252007-07-10 08:45:11 -07001144 /* Enable TCO in extended config */
1145 if (nic->mac >= mac_82551_10) {
1146 config->byte_count = 0x20; /* extended bytes */
1147 config->rx_d102_mode = 0x1; /* GMRC for TCO */
1148 }
1149 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001150 config->standard_stat_counter = 0x0;
David Graham44e49252007-07-10 08:45:11 -07001151 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001152 }
1153
1154 DPRINTK(HW, DEBUG, "[00-07]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
1155 c[0], c[1], c[2], c[3], c[4], c[5], c[6], c[7]);
1156 DPRINTK(HW, DEBUG, "[08-15]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
1157 c[8], c[9], c[10], c[11], c[12], c[13], c[14], c[15]);
1158 DPRINTK(HW, DEBUG, "[16-23]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
1159 c[16], c[17], c[18], c[19], c[20], c[21], c[22], c[23]);
1160}
1161
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001162/*************************************************************************
1163* CPUSaver parameters
1164*
1165* All CPUSaver parameters are 16-bit literals that are part of a
1166* "move immediate value" instruction. By changing the value of
1167* the literal in the instruction before the code is loaded, the
1168* driver can change the algorithm.
1169*
Matt LaPlante0779bf22006-11-30 05:24:39 +01001170* INTDELAY - This loads the dead-man timer with its initial value.
Jesse Brandeburg05479932006-01-17 15:01:10 -08001171* When this timer expires the interrupt is asserted, and the
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001172* timer is reset each time a new packet is received. (see
1173* BUNDLEMAX below to set the limit on number of chained packets)
1174* The current default is 0x600 or 1536. Experiments show that
1175* the value should probably stay within the 0x200 - 0x1000.
1176*
Jesse Brandeburg05479932006-01-17 15:01:10 -08001177* BUNDLEMAX -
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001178* This sets the maximum number of frames that will be bundled. In
1179* some situations, such as the TCP windowing algorithm, it may be
1180* better to limit the growth of the bundle size than let it go as
1181* high as it can, because that could cause too much added latency.
1182* The default is six, because this is the number of packets in the
1183* default TCP window size. A value of 1 would make CPUSaver indicate
1184* an interrupt for every frame received. If you do not want to put
1185* a limit on the bundle size, set this value to xFFFF.
1186*
Jesse Brandeburg05479932006-01-17 15:01:10 -08001187* BUNDLESMALL -
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001188* This contains a bit-mask describing the minimum size frame that
1189* will be bundled. The default masks the lower 7 bits, which means
1190* that any frame less than 128 bytes in length will not be bundled,
1191* but will instead immediately generate an interrupt. This does
1192* not affect the current bundle in any way. Any frame that is 128
1193* bytes or large will be bundled normally. This feature is meant
1194* to provide immediate indication of ACK frames in a TCP environment.
1195* Customers were seeing poor performance when a machine with CPUSaver
1196* enabled was sending but not receiving. The delay introduced when
1197* the ACKs were received was enough to reduce total throughput, because
1198* the sender would sit idle until the ACK was finally seen.
1199*
1200* The current default is 0xFF80, which masks out the lower 7 bits.
1201* This means that any frame which is x7F (127) bytes or smaller
Jesse Brandeburg05479932006-01-17 15:01:10 -08001202* will cause an immediate interrupt. Because this value must be a
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001203* bit mask, there are only a few valid values that can be used. To
1204* turn this feature off, the driver can write the value xFFFF to the
1205* lower word of this instruction (in the same way that the other
1206* parameters are used). Likewise, a value of 0xF800 (2047) would
1207* cause an interrupt to be generated for every frame, because all
1208* standard Ethernet frames are <= 2047 bytes in length.
1209*************************************************************************/
1210
Jesse Brandeburg05479932006-01-17 15:01:10 -08001211/* if you wish to disable the ucode functionality, while maintaining the
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001212 * workarounds it provides, set the following defines to:
1213 * BUNDLESMALL 0
1214 * BUNDLEMAX 1
1215 * INTDELAY 1
1216 */
1217#define BUNDLESMALL 1
1218#define BUNDLEMAX (u16)6
1219#define INTDELAY (u16)1536 /* 0x600 */
1220
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001221/* Initialize firmware */
1222static const struct firmware *e100_request_firmware(struct nic *nic)
1223{
1224 const char *fw_name;
1225 const struct firmware *fw;
1226 u8 timer, bundle, min_size;
1227 int err;
1228
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001229 /* do not load u-code for ICH devices */
1230 if (nic->flags & ich)
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001231 return NULL;
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001232
Auke Kok44c10132007-06-08 15:46:36 -07001233 /* Search for ucode match against h/w revision */
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001234 if (nic->mac == mac_82559_D101M)
1235 fw_name = FIRMWARE_D101M;
1236 else if (nic->mac == mac_82559_D101S)
1237 fw_name = FIRMWARE_D101S;
1238 else if (nic->mac == mac_82551_F || nic->mac == mac_82551_10)
1239 fw_name = FIRMWARE_D102E;
1240 else /* No ucode on other devices */
1241 return NULL;
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001242
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001243 err = request_firmware(&fw, fw_name, &nic->pdev->dev);
1244 if (err) {
1245 DPRINTK(PROBE, ERR, "Failed to load firmware \"%s\": %d\n",
1246 fw_name, err);
1247 return ERR_PTR(err);
1248 }
1249 /* Firmware should be precisely UCODE_SIZE (words) plus three bytes
1250 indicating the offsets for BUNDLESMALL, BUNDLEMAX, INTDELAY */
1251 if (fw->size != UCODE_SIZE * 4 + 3) {
1252 DPRINTK(PROBE, ERR, "Firmware \"%s\" has wrong size %zu\n",
1253 fw_name, fw->size);
1254 release_firmware(fw);
1255 return ERR_PTR(-EINVAL);
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001256 }
1257
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001258 /* Read timer, bundle and min_size from end of firmware blob */
1259 timer = fw->data[UCODE_SIZE * 4];
1260 bundle = fw->data[UCODE_SIZE * 4 + 1];
1261 min_size = fw->data[UCODE_SIZE * 4 + 2];
1262
1263 if (timer >= UCODE_SIZE || bundle >= UCODE_SIZE ||
1264 min_size >= UCODE_SIZE) {
1265 DPRINTK(PROBE, ERR,
1266 "\"%s\" has bogus offset values (0x%x,0x%x,0x%x)\n",
1267 fw_name, timer, bundle, min_size);
1268 release_firmware(fw);
1269 return ERR_PTR(-EINVAL);
1270 }
1271 /* OK, firmware is validated and ready to use... */
1272 return fw;
Jesse Brandeburg24180332006-01-17 15:01:06 -08001273}
1274
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001275static void e100_setup_ucode(struct nic *nic, struct cb *cb,
1276 struct sk_buff *skb)
Jesse Brandeburg24180332006-01-17 15:01:06 -08001277{
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001278 const struct firmware *fw = (void *)skb;
1279 u8 timer, bundle, min_size;
1280
1281 /* It's not a real skb; we just abused the fact that e100_exec_cb
1282 will pass it through to here... */
1283 cb->skb = NULL;
1284
1285 /* firmware is stored as little endian already */
1286 memcpy(cb->u.ucode, fw->data, UCODE_SIZE * 4);
1287
1288 /* Read timer, bundle and min_size from end of firmware blob */
1289 timer = fw->data[UCODE_SIZE * 4];
1290 bundle = fw->data[UCODE_SIZE * 4 + 1];
1291 min_size = fw->data[UCODE_SIZE * 4 + 2];
1292
1293 /* Insert user-tunable settings in cb->u.ucode */
1294 cb->u.ucode[timer] &= cpu_to_le32(0xFFFF0000);
1295 cb->u.ucode[timer] |= cpu_to_le32(INTDELAY);
1296 cb->u.ucode[bundle] &= cpu_to_le32(0xFFFF0000);
1297 cb->u.ucode[bundle] |= cpu_to_le32(BUNDLEMAX);
1298 cb->u.ucode[min_size] &= cpu_to_le32(0xFFFF0000);
1299 cb->u.ucode[min_size] |= cpu_to_le32((BUNDLESMALL) ? 0xFFFF : 0xFF80);
1300
1301 cb->command = cpu_to_le16(cb_ucode | cb_el);
1302}
1303
1304static inline int e100_load_ucode_wait(struct nic *nic)
1305{
1306 const struct firmware *fw;
Jesse Brandeburg24180332006-01-17 15:01:06 -08001307 int err = 0, counter = 50;
1308 struct cb *cb = nic->cb_to_clean;
1309
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001310 fw = e100_request_firmware(nic);
1311 /* If it's NULL, then no ucode is required */
1312 if (!fw || IS_ERR(fw))
1313 return PTR_ERR(fw);
1314
1315 if ((err = e100_exec_cb(nic, (void *)fw, e100_setup_ucode)))
Jesse Brandeburg24180332006-01-17 15:01:06 -08001316 DPRINTK(PROBE,ERR, "ucode cmd failed with error %d\n", err);
Jesse Brandeburg05479932006-01-17 15:01:10 -08001317
Jesse Brandeburg24180332006-01-17 15:01:06 -08001318 /* must restart cuc */
1319 nic->cuc_cmd = cuc_start;
1320
1321 /* wait for completion */
1322 e100_write_flush(nic);
1323 udelay(10);
1324
1325 /* wait for possibly (ouch) 500ms */
1326 while (!(cb->status & cpu_to_le16(cb_complete))) {
1327 msleep(10);
1328 if (!--counter) break;
1329 }
Jesse Brandeburg05479932006-01-17 15:01:10 -08001330
Robert P. J. Day3a4fa0a2007-10-19 23:10:43 +02001331 /* ack any interrupts, something could have been set */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07001332 iowrite8(~0, &nic->csr->scb.stat_ack);
Jesse Brandeburg24180332006-01-17 15:01:06 -08001333
1334 /* if the command failed, or is not OK, notify and return */
1335 if (!counter || !(cb->status & cpu_to_le16(cb_ok))) {
1336 DPRINTK(PROBE,ERR, "ucode load failed\n");
1337 err = -EPERM;
1338 }
Jesse Brandeburg05479932006-01-17 15:01:10 -08001339
Jesse Brandeburg24180332006-01-17 15:01:06 -08001340 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001341}
1342
1343static void e100_setup_iaaddr(struct nic *nic, struct cb *cb,
1344 struct sk_buff *skb)
1345{
1346 cb->command = cpu_to_le16(cb_iaaddr);
1347 memcpy(cb->u.iaaddr, nic->netdev->dev_addr, ETH_ALEN);
1348}
1349
1350static void e100_dump(struct nic *nic, struct cb *cb, struct sk_buff *skb)
1351{
1352 cb->command = cpu_to_le16(cb_dump);
1353 cb->u.dump_buffer_addr = cpu_to_le32(nic->dma_addr +
1354 offsetof(struct mem, dump_buf));
1355}
1356
Andreas Mohr72001762009-06-10 09:55:04 +00001357static int e100_phy_check_without_mii(struct nic *nic)
1358{
1359 u8 phy_type;
1360 int without_mii;
1361
1362 phy_type = (nic->eeprom[eeprom_phy_iface] >> 8) & 0x0f;
1363
1364 switch (phy_type) {
1365 case NoSuchPhy: /* Non-MII PHY; UNTESTED! */
1366 case I82503: /* Non-MII PHY; UNTESTED! */
1367 case S80C24: /* Non-MII PHY; tested and working */
1368 /* paragraph from the FreeBSD driver, "FXP_PHY_80C24":
1369 * The Seeq 80c24 AutoDUPLEX(tm) Ethernet Interface Adapter
1370 * doesn't have a programming interface of any sort. The
1371 * media is sensed automatically based on how the link partner
1372 * is configured. This is, in essence, manual configuration.
1373 */
1374 DPRINTK(PROBE, INFO,
1375 "found MII-less i82503 or 80c24 or other PHY\n");
1376
1377 nic->mdio_ctrl = mdio_ctrl_phy_mii_emulated;
1378 nic->mii.phy_id = 0; /* is this ok for an MII-less PHY? */
1379
1380 /* these might be needed for certain MII-less cards...
1381 * nic->flags |= ich;
1382 * nic->flags |= ich_10h_workaround; */
1383
1384 without_mii = 1;
1385 break;
1386 default:
1387 without_mii = 0;
1388 break;
1389 }
1390 return without_mii;
1391}
1392
Linus Torvalds1da177e2005-04-16 15:20:36 -07001393#define NCONFIG_AUTO_SWITCH 0x0080
1394#define MII_NSC_CONG MII_RESV1
1395#define NSC_CONG_ENABLE 0x0100
1396#define NSC_CONG_TXREADY 0x0400
1397#define ADVERTISE_FC_SUPPORTED 0x0400
1398static int e100_phy_init(struct nic *nic)
1399{
1400 struct net_device *netdev = nic->netdev;
1401 u32 addr;
1402 u16 bmcr, stat, id_lo, id_hi, cong;
1403
1404 /* Discover phy addr by searching addrs in order {1,0,2,..., 31} */
Bruce Allanf26251e2009-01-04 17:12:04 -08001405 for (addr = 0; addr < 32; addr++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001406 nic->mii.phy_id = (addr == 0) ? 1 : (addr == 1) ? 0 : addr;
1407 bmcr = mdio_read(netdev, nic->mii.phy_id, MII_BMCR);
1408 stat = mdio_read(netdev, nic->mii.phy_id, MII_BMSR);
1409 stat = mdio_read(netdev, nic->mii.phy_id, MII_BMSR);
Bruce Allanf26251e2009-01-04 17:12:04 -08001410 if (!((bmcr == 0xFFFF) || ((stat == 0) && (bmcr == 0))))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001411 break;
1412 }
Andreas Mohr72001762009-06-10 09:55:04 +00001413 if (addr == 32) {
1414 /* uhoh, no PHY detected: check whether we seem to be some
1415 * weird, rare variant which is *known* to not have any MII.
1416 * But do this AFTER MII checking only, since this does
1417 * lookup of EEPROM values which may easily be unreliable. */
1418 if (e100_phy_check_without_mii(nic))
1419 return 0; /* simply return and hope for the best */
1420 else {
1421 /* for unknown cases log a fatal error */
1422 DPRINTK(HW, ERR,
1423 "Failed to locate any known PHY, aborting.\n");
1424 return -EAGAIN;
1425 }
1426 } else
1427 DPRINTK(HW, DEBUG, "phy_addr = %d\n", nic->mii.phy_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001428
Bruce Allanb55de802009-03-21 13:25:25 -07001429 /* Isolate all the PHY ids */
1430 for (addr = 0; addr < 32; addr++)
1431 mdio_write(netdev, addr, MII_BMCR, BMCR_ISOLATE);
1432 /* Select the discovered PHY */
1433 bmcr &= ~BMCR_ISOLATE;
1434 mdio_write(netdev, nic->mii.phy_id, MII_BMCR, bmcr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001435
1436 /* Get phy ID */
1437 id_lo = mdio_read(netdev, nic->mii.phy_id, MII_PHYSID1);
1438 id_hi = mdio_read(netdev, nic->mii.phy_id, MII_PHYSID2);
1439 nic->phy = (u32)id_hi << 16 | (u32)id_lo;
1440 DPRINTK(HW, DEBUG, "phy ID = 0x%08X\n", nic->phy);
1441
1442 /* Handle National tx phys */
1443#define NCS_PHY_MODEL_MASK 0xFFF0FFFF
Bruce Allanf26251e2009-01-04 17:12:04 -08001444 if ((nic->phy & NCS_PHY_MODEL_MASK) == phy_nsc_tx) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001445 /* Disable congestion control */
1446 cong = mdio_read(netdev, nic->mii.phy_id, MII_NSC_CONG);
1447 cong |= NSC_CONG_TXREADY;
1448 cong &= ~NSC_CONG_ENABLE;
1449 mdio_write(netdev, nic->mii.phy_id, MII_NSC_CONG, cong);
1450 }
1451
Bruce Allanb55de802009-03-21 13:25:25 -07001452 if (nic->phy == phy_82552_v) {
1453 u16 advert = mdio_read(netdev, nic->mii.phy_id, MII_ADVERTISE);
1454
Andreas Mohr72001762009-06-10 09:55:04 +00001455 /* assign special tweaked mdio_ctrl() function */
1456 nic->mdio_ctrl = mdio_ctrl_phy_82552_v;
1457
Bruce Allanb55de802009-03-21 13:25:25 -07001458 /* Workaround Si not advertising flow-control during autoneg */
1459 advert |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
1460 mdio_write(netdev, nic->mii.phy_id, MII_ADVERTISE, advert);
1461
1462 /* Reset for the above changes to take effect */
1463 bmcr = mdio_read(netdev, nic->mii.phy_id, MII_BMCR);
1464 bmcr |= BMCR_RESET;
1465 mdio_write(netdev, nic->mii.phy_id, MII_BMCR, bmcr);
1466 } else if ((nic->mac >= mac_82550_D102) || ((nic->flags & ich) &&
Jeff Kirsher60ffa472006-08-16 11:28:14 -07001467 (mdio_read(netdev, nic->mii.phy_id, MII_TPISTATUS) & 0x8000) &&
1468 !(nic->eeprom[eeprom_cnfg_mdix] & eeprom_mdix_enabled))) {
1469 /* enable/disable MDI/MDI-X auto-switching. */
1470 mdio_write(netdev, nic->mii.phy_id, MII_NCONFIG,
1471 nic->mii.force_media ? 0 : NCONFIG_AUTO_SWITCH);
Malli Chilakala64895142005-06-17 17:27:41 -07001472 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001473
1474 return 0;
1475}
1476
1477static int e100_hw_init(struct nic *nic)
1478{
1479 int err;
1480
1481 e100_hw_reset(nic);
1482
1483 DPRINTK(HW, ERR, "e100_hw_init\n");
Bruce Allanf26251e2009-01-04 17:12:04 -08001484 if (!in_interrupt() && (err = e100_self_test(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001485 return err;
1486
Bruce Allanf26251e2009-01-04 17:12:04 -08001487 if ((err = e100_phy_init(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001488 return err;
Bruce Allanf26251e2009-01-04 17:12:04 -08001489 if ((err = e100_exec_cmd(nic, cuc_load_base, 0)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001490 return err;
Bruce Allanf26251e2009-01-04 17:12:04 -08001491 if ((err = e100_exec_cmd(nic, ruc_load_base, 0)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001492 return err;
Jaswinder Singh Rajput9ac32e12009-01-07 12:59:17 -08001493 if ((err = e100_load_ucode_wait(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001494 return err;
Bruce Allanf26251e2009-01-04 17:12:04 -08001495 if ((err = e100_exec_cb(nic, NULL, e100_configure)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001496 return err;
Bruce Allanf26251e2009-01-04 17:12:04 -08001497 if ((err = e100_exec_cb(nic, NULL, e100_setup_iaaddr)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001498 return err;
Bruce Allanf26251e2009-01-04 17:12:04 -08001499 if ((err = e100_exec_cmd(nic, cuc_dump_addr,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001500 nic->dma_addr + offsetof(struct mem, stats))))
1501 return err;
Bruce Allanf26251e2009-01-04 17:12:04 -08001502 if ((err = e100_exec_cmd(nic, cuc_dump_reset, 0)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001503 return err;
1504
1505 e100_disable_irq(nic);
1506
1507 return 0;
1508}
1509
1510static void e100_multi(struct nic *nic, struct cb *cb, struct sk_buff *skb)
1511{
1512 struct net_device *netdev = nic->netdev;
1513 struct dev_mc_list *list = netdev->mc_list;
1514 u16 i, count = min(netdev->mc_count, E100_MAX_MULTICAST_ADDRS);
1515
1516 cb->command = cpu_to_le16(cb_multi);
1517 cb->u.multi.count = cpu_to_le16(count * ETH_ALEN);
Bruce Allanf26251e2009-01-04 17:12:04 -08001518 for (i = 0; list && i < count; i++, list = list->next)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001519 memcpy(&cb->u.multi.addr[i*ETH_ALEN], &list->dmi_addr,
1520 ETH_ALEN);
1521}
1522
1523static void e100_set_multicast_list(struct net_device *netdev)
1524{
1525 struct nic *nic = netdev_priv(netdev);
1526
1527 DPRINTK(HW, DEBUG, "mc_count=%d, flags=0x%04X\n",
1528 netdev->mc_count, netdev->flags);
1529
Bruce Allanf26251e2009-01-04 17:12:04 -08001530 if (netdev->flags & IFF_PROMISC)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001531 nic->flags |= promiscuous;
1532 else
1533 nic->flags &= ~promiscuous;
1534
Bruce Allanf26251e2009-01-04 17:12:04 -08001535 if (netdev->flags & IFF_ALLMULTI ||
Linus Torvalds1da177e2005-04-16 15:20:36 -07001536 netdev->mc_count > E100_MAX_MULTICAST_ADDRS)
1537 nic->flags |= multicast_all;
1538 else
1539 nic->flags &= ~multicast_all;
1540
1541 e100_exec_cb(nic, NULL, e100_configure);
1542 e100_exec_cb(nic, NULL, e100_multi);
1543}
1544
1545static void e100_update_stats(struct nic *nic)
1546{
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001547 struct net_device *dev = nic->netdev;
1548 struct net_device_stats *ns = &dev->stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001549 struct stats *s = &nic->mem->stats;
Al Viroaaf918b2007-12-10 18:32:49 +00001550 __le32 *complete = (nic->mac < mac_82558_D101_A4) ? &s->fc_xmt_pause :
1551 (nic->mac < mac_82559_D101M) ? (__le32 *)&s->xmt_tco_frames :
Linus Torvalds1da177e2005-04-16 15:20:36 -07001552 &s->complete;
1553
1554 /* Device's stats reporting may take several microseconds to
Andreas Mohr0a0863a2008-02-01 08:21:39 -08001555 * complete, so we're always waiting for results of the
Linus Torvalds1da177e2005-04-16 15:20:36 -07001556 * previous command. */
1557
Bruce Allanf26251e2009-01-04 17:12:04 -08001558 if (*complete == cpu_to_le32(cuc_dump_reset_complete)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001559 *complete = 0;
1560 nic->tx_frames = le32_to_cpu(s->tx_good_frames);
1561 nic->tx_collisions = le32_to_cpu(s->tx_total_collisions);
1562 ns->tx_aborted_errors += le32_to_cpu(s->tx_max_collisions);
1563 ns->tx_window_errors += le32_to_cpu(s->tx_late_collisions);
1564 ns->tx_carrier_errors += le32_to_cpu(s->tx_lost_crs);
1565 ns->tx_fifo_errors += le32_to_cpu(s->tx_underruns);
1566 ns->collisions += nic->tx_collisions;
1567 ns->tx_errors += le32_to_cpu(s->tx_max_collisions) +
1568 le32_to_cpu(s->tx_lost_crs);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001569 ns->rx_length_errors += le32_to_cpu(s->rx_short_frame_errors) +
1570 nic->rx_over_length_errors;
1571 ns->rx_crc_errors += le32_to_cpu(s->rx_crc_errors);
1572 ns->rx_frame_errors += le32_to_cpu(s->rx_alignment_errors);
1573 ns->rx_over_errors += le32_to_cpu(s->rx_overrun_errors);
1574 ns->rx_fifo_errors += le32_to_cpu(s->rx_overrun_errors);
John W. Linvilleecf71302005-09-12 10:48:59 -04001575 ns->rx_missed_errors += le32_to_cpu(s->rx_resource_errors);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001576 ns->rx_errors += le32_to_cpu(s->rx_crc_errors) +
1577 le32_to_cpu(s->rx_alignment_errors) +
1578 le32_to_cpu(s->rx_short_frame_errors) +
1579 le32_to_cpu(s->rx_cdt_errors);
1580 nic->tx_deferred += le32_to_cpu(s->tx_deferred);
1581 nic->tx_single_collisions +=
1582 le32_to_cpu(s->tx_single_collisions);
1583 nic->tx_multiple_collisions +=
1584 le32_to_cpu(s->tx_multiple_collisions);
Bruce Allanf26251e2009-01-04 17:12:04 -08001585 if (nic->mac >= mac_82558_D101_A4) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001586 nic->tx_fc_pause += le32_to_cpu(s->fc_xmt_pause);
1587 nic->rx_fc_pause += le32_to_cpu(s->fc_rcv_pause);
1588 nic->rx_fc_unsupported +=
1589 le32_to_cpu(s->fc_rcv_unsupported);
Bruce Allanf26251e2009-01-04 17:12:04 -08001590 if (nic->mac >= mac_82559_D101M) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001591 nic->tx_tco_frames +=
1592 le16_to_cpu(s->xmt_tco_frames);
1593 nic->rx_tco_frames +=
1594 le16_to_cpu(s->rcv_tco_frames);
1595 }
1596 }
1597 }
1598
Jesse Brandeburg05479932006-01-17 15:01:10 -08001599
Bruce Allanf26251e2009-01-04 17:12:04 -08001600 if (e100_exec_cmd(nic, cuc_dump_reset, 0))
Malli Chilakala1f533672005-04-28 19:17:20 -07001601 DPRINTK(TX_ERR, DEBUG, "exec cuc_dump_reset failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001602}
1603
1604static void e100_adjust_adaptive_ifs(struct nic *nic, int speed, int duplex)
1605{
1606 /* Adjust inter-frame-spacing (IFS) between two transmits if
1607 * we're getting collisions on a half-duplex connection. */
1608
Bruce Allanf26251e2009-01-04 17:12:04 -08001609 if (duplex == DUPLEX_HALF) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001610 u32 prev = nic->adaptive_ifs;
1611 u32 min_frames = (speed == SPEED_100) ? 1000 : 100;
1612
Bruce Allanf26251e2009-01-04 17:12:04 -08001613 if ((nic->tx_frames / 32 < nic->tx_collisions) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07001614 (nic->tx_frames > min_frames)) {
Bruce Allanf26251e2009-01-04 17:12:04 -08001615 if (nic->adaptive_ifs < 60)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001616 nic->adaptive_ifs += 5;
1617 } else if (nic->tx_frames < min_frames) {
Bruce Allanf26251e2009-01-04 17:12:04 -08001618 if (nic->adaptive_ifs >= 5)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001619 nic->adaptive_ifs -= 5;
1620 }
Bruce Allanf26251e2009-01-04 17:12:04 -08001621 if (nic->adaptive_ifs != prev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001622 e100_exec_cb(nic, NULL, e100_configure);
1623 }
1624}
1625
1626static void e100_watchdog(unsigned long data)
1627{
1628 struct nic *nic = (struct nic *)data;
1629 struct ethtool_cmd cmd;
1630
1631 DPRINTK(TIMER, DEBUG, "right now = %ld\n", jiffies);
1632
1633 /* mii library handles link maintenance tasks */
1634
1635 mii_ethtool_gset(&nic->mii, &cmd);
1636
Bruce Allanf26251e2009-01-04 17:12:04 -08001637 if (mii_link_ok(&nic->mii) && !netif_carrier_ok(nic->netdev)) {
Jeff Kirsherf4113032008-11-27 00:23:37 -08001638 printk(KERN_INFO "e100: %s NIC Link is Up %s Mbps %s Duplex\n",
1639 nic->netdev->name,
1640 cmd.speed == SPEED_100 ? "100" : "10",
1641 cmd.duplex == DUPLEX_FULL ? "Full" : "Half");
Bruce Allanf26251e2009-01-04 17:12:04 -08001642 } else if (!mii_link_ok(&nic->mii) && netif_carrier_ok(nic->netdev)) {
Jeff Kirsherf4113032008-11-27 00:23:37 -08001643 printk(KERN_INFO "e100: %s NIC Link is Down\n",
1644 nic->netdev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001645 }
1646
1647 mii_check_link(&nic->mii);
1648
1649 /* Software generated interrupt to recover from (rare) Rx
Jesse Brandeburg05479932006-01-17 15:01:10 -08001650 * allocation failure.
1651 * Unfortunately have to use a spinlock to not re-enable interrupts
1652 * accidentally, due to hardware that shares a register between the
1653 * interrupt mask bit and the SW Interrupt generation bit */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001654 spin_lock_irq(&nic->cmd_lock);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07001655 iowrite8(ioread8(&nic->csr->scb.cmd_hi) | irq_sw_gen,&nic->csr->scb.cmd_hi);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001656 e100_write_flush(nic);
Catalin(ux aka Dino) BOIEad8c48a2006-03-04 12:18:59 -05001657 spin_unlock_irq(&nic->cmd_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001658
1659 e100_update_stats(nic);
1660 e100_adjust_adaptive_ifs(nic, cmd.speed, cmd.duplex);
1661
Bruce Allanf26251e2009-01-04 17:12:04 -08001662 if (nic->mac <= mac_82557_D100_C)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001663 /* Issue a multicast command to workaround a 557 lock up */
1664 e100_set_multicast_list(nic->netdev);
1665
Bruce Allanf26251e2009-01-04 17:12:04 -08001666 if (nic->flags & ich && cmd.speed==SPEED_10 && cmd.duplex==DUPLEX_HALF)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001667 /* Need SW workaround for ICH[x] 10Mbps/half duplex Tx hang. */
1668 nic->flags |= ich_10h_workaround;
1669 else
1670 nic->flags &= ~ich_10h_workaround;
1671
Stephen Hemminger34c64172007-09-06 11:51:37 -07001672 mod_timer(&nic->watchdog,
1673 round_jiffies(jiffies + E100_WATCHDOG_PERIOD));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001674}
1675
Arjan van de Ven858119e2006-01-14 13:20:43 -08001676static void e100_xmit_prepare(struct nic *nic, struct cb *cb,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001677 struct sk_buff *skb)
1678{
1679 cb->command = nic->tx_command;
Malli Chilakala962082b2005-04-28 19:19:46 -07001680 /* interrupt every 16 packets regardless of delay */
Bruce Allanf26251e2009-01-04 17:12:04 -08001681 if ((nic->cbs_avail & ~15) == nic->cbs_avail)
Malli Chilakala996ec352005-08-25 13:06:08 -07001682 cb->command |= cpu_to_le16(cb_i);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001683 cb->u.tcb.tbd_array = cb->dma_addr + offsetof(struct cb, u.tcb.tbd);
1684 cb->u.tcb.tcb_byte_count = 0;
1685 cb->u.tcb.threshold = nic->tx_threshold;
1686 cb->u.tcb.tbd_count = 1;
1687 cb->u.tcb.tbd.buf_addr = cpu_to_le32(pci_map_single(nic->pdev,
1688 skb->data, skb->len, PCI_DMA_TODEVICE));
Malli Chilakala611494d2005-08-25 13:06:52 -07001689 /* check for mapping failure? */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001690 cb->u.tcb.tbd.size = cpu_to_le16(skb->len);
1691}
1692
1693static int e100_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1694{
1695 struct nic *nic = netdev_priv(netdev);
1696 int err;
1697
Bruce Allanf26251e2009-01-04 17:12:04 -08001698 if (nic->flags & ich_10h_workaround) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001699 /* SW workaround for ICH[x] 10Mbps/half duplex Tx hang.
1700 Issue a NOP command followed by a 1us delay before
1701 issuing the Tx command. */
Bruce Allanf26251e2009-01-04 17:12:04 -08001702 if (e100_exec_cmd(nic, cuc_nop, 0))
Malli Chilakala1f533672005-04-28 19:17:20 -07001703 DPRINTK(TX_ERR, DEBUG, "exec cuc_nop failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001704 udelay(1);
1705 }
1706
1707 err = e100_exec_cb(nic, skb, e100_xmit_prepare);
1708
Bruce Allanf26251e2009-01-04 17:12:04 -08001709 switch (err) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001710 case -ENOSPC:
1711 /* We queued the skb, but now we're out of space. */
1712 DPRINTK(TX_ERR, DEBUG, "No space for CB\n");
1713 netif_stop_queue(netdev);
1714 break;
1715 case -ENOMEM:
1716 /* This is a hard error - log it. */
1717 DPRINTK(TX_ERR, DEBUG, "Out of Tx resources, returning skb\n");
1718 netif_stop_queue(netdev);
Patrick McHardy5b548142009-06-12 06:22:29 +00001719 return NETDEV_TX_BUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001720 }
1721
1722 netdev->trans_start = jiffies;
1723 return 0;
1724}
1725
Arjan van de Ven858119e2006-01-14 13:20:43 -08001726static int e100_tx_clean(struct nic *nic)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001727{
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001728 struct net_device *dev = nic->netdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001729 struct cb *cb;
1730 int tx_cleaned = 0;
1731
1732 spin_lock(&nic->cb_lock);
1733
Linus Torvalds1da177e2005-04-16 15:20:36 -07001734 /* Clean CBs marked complete */
Bruce Allanf26251e2009-01-04 17:12:04 -08001735 for (cb = nic->cb_to_clean;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001736 cb->status & cpu_to_le16(cb_complete);
1737 cb = nic->cb_to_clean = cb->next) {
Jesse Brandeburgdc450102006-09-27 12:53:22 -07001738 DPRINTK(TX_DONE, DEBUG, "cb[%d]->status = 0x%04X\n",
1739 (int)(((void*)cb - (void*)nic->cbs)/sizeof(struct cb)),
1740 cb->status);
1741
Bruce Allanf26251e2009-01-04 17:12:04 -08001742 if (likely(cb->skb != NULL)) {
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001743 dev->stats.tx_packets++;
1744 dev->stats.tx_bytes += cb->skb->len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001745
1746 pci_unmap_single(nic->pdev,
1747 le32_to_cpu(cb->u.tcb.tbd.buf_addr),
1748 le16_to_cpu(cb->u.tcb.tbd.size),
1749 PCI_DMA_TODEVICE);
1750 dev_kfree_skb_any(cb->skb);
1751 cb->skb = NULL;
1752 tx_cleaned = 1;
1753 }
1754 cb->status = 0;
1755 nic->cbs_avail++;
1756 }
1757
1758 spin_unlock(&nic->cb_lock);
1759
1760 /* Recover from running out of Tx resources in xmit_frame */
Bruce Allanf26251e2009-01-04 17:12:04 -08001761 if (unlikely(tx_cleaned && netif_queue_stopped(nic->netdev)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001762 netif_wake_queue(nic->netdev);
1763
1764 return tx_cleaned;
1765}
1766
1767static void e100_clean_cbs(struct nic *nic)
1768{
Bruce Allanf26251e2009-01-04 17:12:04 -08001769 if (nic->cbs) {
1770 while (nic->cbs_avail != nic->params.cbs.count) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001771 struct cb *cb = nic->cb_to_clean;
Bruce Allanf26251e2009-01-04 17:12:04 -08001772 if (cb->skb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001773 pci_unmap_single(nic->pdev,
1774 le32_to_cpu(cb->u.tcb.tbd.buf_addr),
1775 le16_to_cpu(cb->u.tcb.tbd.size),
1776 PCI_DMA_TODEVICE);
1777 dev_kfree_skb(cb->skb);
1778 }
1779 nic->cb_to_clean = nic->cb_to_clean->next;
1780 nic->cbs_avail++;
1781 }
1782 pci_free_consistent(nic->pdev,
1783 sizeof(struct cb) * nic->params.cbs.count,
1784 nic->cbs, nic->cbs_dma_addr);
1785 nic->cbs = NULL;
1786 nic->cbs_avail = 0;
1787 }
1788 nic->cuc_cmd = cuc_start;
1789 nic->cb_to_use = nic->cb_to_send = nic->cb_to_clean =
1790 nic->cbs;
1791}
1792
1793static int e100_alloc_cbs(struct nic *nic)
1794{
1795 struct cb *cb;
1796 unsigned int i, count = nic->params.cbs.count;
1797
1798 nic->cuc_cmd = cuc_start;
1799 nic->cb_to_use = nic->cb_to_send = nic->cb_to_clean = NULL;
1800 nic->cbs_avail = 0;
1801
1802 nic->cbs = pci_alloc_consistent(nic->pdev,
1803 sizeof(struct cb) * count, &nic->cbs_dma_addr);
Bruce Allanf26251e2009-01-04 17:12:04 -08001804 if (!nic->cbs)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001805 return -ENOMEM;
1806
Bruce Allanf26251e2009-01-04 17:12:04 -08001807 for (cb = nic->cbs, i = 0; i < count; cb++, i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001808 cb->next = (i + 1 < count) ? cb + 1 : nic->cbs;
1809 cb->prev = (i == 0) ? nic->cbs + count - 1 : cb - 1;
1810
1811 cb->dma_addr = nic->cbs_dma_addr + i * sizeof(struct cb);
1812 cb->link = cpu_to_le32(nic->cbs_dma_addr +
1813 ((i+1) % count) * sizeof(struct cb));
1814 cb->skb = NULL;
1815 }
1816
1817 nic->cb_to_use = nic->cb_to_send = nic->cb_to_clean = nic->cbs;
1818 nic->cbs_avail = count;
1819
1820 return 0;
1821}
1822
Jeff Garzikca93ca42007-06-12 18:52:31 -04001823static inline void e100_start_receiver(struct nic *nic, struct rx *rx)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001824{
Bruce Allanf26251e2009-01-04 17:12:04 -08001825 if (!nic->rxs) return;
1826 if (RU_SUSPENDED != nic->ru_running) return;
Jeff Garzikca93ca42007-06-12 18:52:31 -04001827
1828 /* handle init time starts */
Bruce Allanf26251e2009-01-04 17:12:04 -08001829 if (!rx) rx = nic->rxs;
Jeff Garzikca93ca42007-06-12 18:52:31 -04001830
1831 /* (Re)start RU if suspended or idle and RFA is non-NULL */
Bruce Allanf26251e2009-01-04 17:12:04 -08001832 if (rx->skb) {
Jeff Garzikca93ca42007-06-12 18:52:31 -04001833 e100_exec_cmd(nic, ruc_start, rx->dma_addr);
1834 nic->ru_running = RU_RUNNING;
1835 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001836}
1837
1838#define RFD_BUF_LEN (sizeof(struct rfd) + VLAN_ETH_FRAME_LEN)
Arjan van de Ven858119e2006-01-14 13:20:43 -08001839static int e100_rx_alloc_skb(struct nic *nic, struct rx *rx)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001840{
Bruce Allanf26251e2009-01-04 17:12:04 -08001841 if (!(rx->skb = netdev_alloc_skb(nic->netdev, RFD_BUF_LEN + NET_IP_ALIGN)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001842 return -ENOMEM;
1843
1844 /* Align, init, and map the RFD. */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001845 skb_reserve(rx->skb, NET_IP_ALIGN);
Arnaldo Carvalho de Melo27d7ff42007-03-31 11:55:19 -03001846 skb_copy_to_linear_data(rx->skb, &nic->blank_rfd, sizeof(struct rfd));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001847 rx->dma_addr = pci_map_single(nic->pdev, rx->skb->data,
1848 RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
1849
FUJITA Tomonori8d8bb392008-07-25 19:44:49 -07001850 if (pci_dma_mapping_error(nic->pdev, rx->dma_addr)) {
Malli Chilakala1f533672005-04-28 19:17:20 -07001851 dev_kfree_skb_any(rx->skb);
Luiz Fernando Capitulino097688e2005-11-07 18:14:12 -02001852 rx->skb = NULL;
Malli Chilakala1f533672005-04-28 19:17:20 -07001853 rx->dma_addr = 0;
1854 return -ENOMEM;
1855 }
1856
Linus Torvalds1da177e2005-04-16 15:20:36 -07001857 /* Link the RFD to end of RFA by linking previous RFD to
David Acker7734f6e2007-11-08 10:17:41 -08001858 * this one. We are safe to touch the previous RFD because
1859 * it is protected by the before last buffer's el bit being set */
Al Viroaaf918b2007-12-10 18:32:49 +00001860 if (rx->prev->skb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001861 struct rfd *prev_rfd = (struct rfd *)rx->prev->skb->data;
Harvey Harrison6caf52a2008-04-29 01:03:36 -07001862 put_unaligned_le32(rx->dma_addr, &prev_rfd->link);
Kevin Hao19238152008-06-21 18:20:35 +08001863 pci_dma_sync_single_for_device(nic->pdev, rx->prev->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00001864 sizeof(struct rfd), PCI_DMA_BIDIRECTIONAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001865 }
1866
1867 return 0;
1868}
1869
Arjan van de Ven858119e2006-01-14 13:20:43 -08001870static int e100_rx_indicate(struct nic *nic, struct rx *rx,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001871 unsigned int *work_done, unsigned int work_to_do)
1872{
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001873 struct net_device *dev = nic->netdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001874 struct sk_buff *skb = rx->skb;
1875 struct rfd *rfd = (struct rfd *)skb->data;
1876 u16 rfd_status, actual_size;
1877
Bruce Allanf26251e2009-01-04 17:12:04 -08001878 if (unlikely(work_done && *work_done >= work_to_do))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001879 return -EAGAIN;
1880
1881 /* Need to sync before taking a peek at cb_complete bit */
1882 pci_dma_sync_single_for_cpu(nic->pdev, rx->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00001883 sizeof(struct rfd), PCI_DMA_BIDIRECTIONAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001884 rfd_status = le16_to_cpu(rfd->status);
1885
1886 DPRINTK(RX_STATUS, DEBUG, "status=0x%04X\n", rfd_status);
1887
1888 /* If data isn't ready, nothing to indicate */
David Acker7734f6e2007-11-08 10:17:41 -08001889 if (unlikely(!(rfd_status & cb_complete))) {
1890 /* If the next buffer has the el bit, but we think the receiver
1891 * is still running, check to see if it really stopped while
1892 * we had interrupts off.
1893 * This allows for a fast restart without re-enabling
1894 * interrupts */
1895 if ((le16_to_cpu(rfd->command) & cb_el) &&
1896 (RU_RUNNING == nic->ru_running))
1897
Jiri Slaby17393dd2008-08-14 18:27:23 +02001898 if (ioread8(&nic->csr->scb.status) & rus_no_res)
David Acker7734f6e2007-11-08 10:17:41 -08001899 nic->ru_running = RU_SUSPENDED;
Malli Chilakala1f533672005-04-28 19:17:20 -07001900 return -ENODATA;
David Acker7734f6e2007-11-08 10:17:41 -08001901 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001902
1903 /* Get actual data size */
1904 actual_size = le16_to_cpu(rfd->actual_size) & 0x3FFF;
Bruce Allanf26251e2009-01-04 17:12:04 -08001905 if (unlikely(actual_size > RFD_BUF_LEN - sizeof(struct rfd)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001906 actual_size = RFD_BUF_LEN - sizeof(struct rfd);
1907
1908 /* Get data */
1909 pci_unmap_single(nic->pdev, rx->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00001910 RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001911
David Acker7734f6e2007-11-08 10:17:41 -08001912 /* If this buffer has the el bit, but we think the receiver
1913 * is still running, check to see if it really stopped while
1914 * we had interrupts off.
1915 * This allows for a fast restart without re-enabling interrupts.
1916 * This can happen when the RU sees the size change but also sees
1917 * the el bit set. */
1918 if ((le16_to_cpu(rfd->command) & cb_el) &&
1919 (RU_RUNNING == nic->ru_running)) {
1920
Jiri Slaby17393dd2008-08-14 18:27:23 +02001921 if (ioread8(&nic->csr->scb.status) & rus_no_res)
Jeff Garzikca93ca42007-06-12 18:52:31 -04001922 nic->ru_running = RU_SUSPENDED;
David Acker7734f6e2007-11-08 10:17:41 -08001923 }
Jeff Garzikca93ca42007-06-12 18:52:31 -04001924
Linus Torvalds1da177e2005-04-16 15:20:36 -07001925 /* Pull off the RFD and put the actual data (minus eth hdr) */
1926 skb_reserve(skb, sizeof(struct rfd));
1927 skb_put(skb, actual_size);
1928 skb->protocol = eth_type_trans(skb, nic->netdev);
1929
Bruce Allanf26251e2009-01-04 17:12:04 -08001930 if (unlikely(!(rfd_status & cb_ok))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001931 /* Don't indicate if hardware indicates errors */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001932 dev_kfree_skb_any(skb);
Bruce Allanf26251e2009-01-04 17:12:04 -08001933 } else if (actual_size > ETH_DATA_LEN + VLAN_ETH_HLEN) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001934 /* Don't indicate oversized frames */
1935 nic->rx_over_length_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001936 dev_kfree_skb_any(skb);
1937 } else {
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001938 dev->stats.rx_packets++;
1939 dev->stats.rx_bytes += actual_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001940 netif_receive_skb(skb);
Bruce Allanf26251e2009-01-04 17:12:04 -08001941 if (work_done)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001942 (*work_done)++;
1943 }
1944
1945 rx->skb = NULL;
1946
1947 return 0;
1948}
1949
Arjan van de Ven858119e2006-01-14 13:20:43 -08001950static void e100_rx_clean(struct nic *nic, unsigned int *work_done,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001951 unsigned int work_to_do)
1952{
1953 struct rx *rx;
David Acker7734f6e2007-11-08 10:17:41 -08001954 int restart_required = 0, err = 0;
1955 struct rx *old_before_last_rx, *new_before_last_rx;
1956 struct rfd *old_before_last_rfd, *new_before_last_rfd;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001957
1958 /* Indicate newly arrived packets */
Bruce Allanf26251e2009-01-04 17:12:04 -08001959 for (rx = nic->rx_to_clean; rx->skb; rx = nic->rx_to_clean = rx->next) {
David Acker7734f6e2007-11-08 10:17:41 -08001960 err = e100_rx_indicate(nic, rx, work_done, work_to_do);
1961 /* Hit quota or no more to clean */
1962 if (-EAGAIN == err || -ENODATA == err)
Jeff Garzikca93ca42007-06-12 18:52:31 -04001963 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001964 }
1965
David Acker7734f6e2007-11-08 10:17:41 -08001966
1967 /* On EAGAIN, hit quota so have more work to do, restart once
1968 * cleanup is complete.
1969 * Else, are we already rnr? then pay attention!!! this ensures that
1970 * the state machine progression never allows a start with a
1971 * partially cleaned list, avoiding a race between hardware
1972 * and rx_to_clean when in NAPI mode */
1973 if (-EAGAIN != err && RU_SUSPENDED == nic->ru_running)
1974 restart_required = 1;
1975
1976 old_before_last_rx = nic->rx_to_use->prev->prev;
1977 old_before_last_rfd = (struct rfd *)old_before_last_rx->skb->data;
Jeff Garzikca93ca42007-06-12 18:52:31 -04001978
Linus Torvalds1da177e2005-04-16 15:20:36 -07001979 /* Alloc new skbs to refill list */
Bruce Allanf26251e2009-01-04 17:12:04 -08001980 for (rx = nic->rx_to_use; !rx->skb; rx = nic->rx_to_use = rx->next) {
1981 if (unlikely(e100_rx_alloc_skb(nic, rx)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001982 break; /* Better luck next time (see watchdog) */
1983 }
Jeff Garzikca93ca42007-06-12 18:52:31 -04001984
David Acker7734f6e2007-11-08 10:17:41 -08001985 new_before_last_rx = nic->rx_to_use->prev->prev;
1986 if (new_before_last_rx != old_before_last_rx) {
1987 /* Set the el-bit on the buffer that is before the last buffer.
1988 * This lets us update the next pointer on the last buffer
1989 * without worrying about hardware touching it.
1990 * We set the size to 0 to prevent hardware from touching this
1991 * buffer.
1992 * When the hardware hits the before last buffer with el-bit
1993 * and size of 0, it will RNR interrupt, the RUS will go into
1994 * the No Resources state. It will not complete nor write to
1995 * this buffer. */
1996 new_before_last_rfd =
1997 (struct rfd *)new_before_last_rx->skb->data;
1998 new_before_last_rfd->size = 0;
1999 new_before_last_rfd->command |= cpu_to_le16(cb_el);
2000 pci_dma_sync_single_for_device(nic->pdev,
2001 new_before_last_rx->dma_addr, sizeof(struct rfd),
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00002002 PCI_DMA_BIDIRECTIONAL);
David Acker7734f6e2007-11-08 10:17:41 -08002003
2004 /* Now that we have a new stopping point, we can clear the old
2005 * stopping point. We must sync twice to get the proper
2006 * ordering on the hardware side of things. */
2007 old_before_last_rfd->command &= ~cpu_to_le16(cb_el);
2008 pci_dma_sync_single_for_device(nic->pdev,
2009 old_before_last_rx->dma_addr, sizeof(struct rfd),
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00002010 PCI_DMA_BIDIRECTIONAL);
David Acker7734f6e2007-11-08 10:17:41 -08002011 old_before_last_rfd->size = cpu_to_le16(VLAN_ETH_FRAME_LEN);
2012 pci_dma_sync_single_for_device(nic->pdev,
2013 old_before_last_rx->dma_addr, sizeof(struct rfd),
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00002014 PCI_DMA_BIDIRECTIONAL);
David Acker7734f6e2007-11-08 10:17:41 -08002015 }
2016
Bruce Allanf26251e2009-01-04 17:12:04 -08002017 if (restart_required) {
Jeff Garzikca93ca42007-06-12 18:52:31 -04002018 // ack the rnr?
Jiri Slaby915e91d2008-01-29 22:49:16 +01002019 iowrite8(stat_ack_rnr, &nic->csr->scb.stat_ack);
David Acker7734f6e2007-11-08 10:17:41 -08002020 e100_start_receiver(nic, nic->rx_to_clean);
Bruce Allanf26251e2009-01-04 17:12:04 -08002021 if (work_done)
Jeff Garzikca93ca42007-06-12 18:52:31 -04002022 (*work_done)++;
2023 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002024}
2025
2026static void e100_rx_clean_list(struct nic *nic)
2027{
2028 struct rx *rx;
2029 unsigned int i, count = nic->params.rfds.count;
2030
Jeff Garzikca93ca42007-06-12 18:52:31 -04002031 nic->ru_running = RU_UNINITIALIZED;
2032
Bruce Allanf26251e2009-01-04 17:12:04 -08002033 if (nic->rxs) {
2034 for (rx = nic->rxs, i = 0; i < count; rx++, i++) {
2035 if (rx->skb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002036 pci_unmap_single(nic->pdev, rx->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00002037 RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002038 dev_kfree_skb(rx->skb);
2039 }
2040 }
2041 kfree(nic->rxs);
2042 nic->rxs = NULL;
2043 }
2044
2045 nic->rx_to_use = nic->rx_to_clean = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002046}
2047
2048static int e100_rx_alloc_list(struct nic *nic)
2049{
2050 struct rx *rx;
2051 unsigned int i, count = nic->params.rfds.count;
David Acker7734f6e2007-11-08 10:17:41 -08002052 struct rfd *before_last;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002053
2054 nic->rx_to_use = nic->rx_to_clean = NULL;
Jeff Garzikca93ca42007-06-12 18:52:31 -04002055 nic->ru_running = RU_UNINITIALIZED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002056
Bruce Allanf26251e2009-01-04 17:12:04 -08002057 if (!(nic->rxs = kcalloc(count, sizeof(struct rx), GFP_ATOMIC)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002058 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002059
Bruce Allanf26251e2009-01-04 17:12:04 -08002060 for (rx = nic->rxs, i = 0; i < count; rx++, i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002061 rx->next = (i + 1 < count) ? rx + 1 : nic->rxs;
2062 rx->prev = (i == 0) ? nic->rxs + count - 1 : rx - 1;
Bruce Allanf26251e2009-01-04 17:12:04 -08002063 if (e100_rx_alloc_skb(nic, rx)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002064 e100_rx_clean_list(nic);
2065 return -ENOMEM;
2066 }
2067 }
David Acker7734f6e2007-11-08 10:17:41 -08002068 /* Set the el-bit on the buffer that is before the last buffer.
2069 * This lets us update the next pointer on the last buffer without
2070 * worrying about hardware touching it.
2071 * We set the size to 0 to prevent hardware from touching this buffer.
2072 * When the hardware hits the before last buffer with el-bit and size
2073 * of 0, it will RNR interrupt, the RU will go into the No Resources
2074 * state. It will not complete nor write to this buffer. */
2075 rx = nic->rxs->prev->prev;
2076 before_last = (struct rfd *)rx->skb->data;
2077 before_last->command |= cpu_to_le16(cb_el);
2078 before_last->size = 0;
2079 pci_dma_sync_single_for_device(nic->pdev, rx->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00002080 sizeof(struct rfd), PCI_DMA_BIDIRECTIONAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002081
2082 nic->rx_to_use = nic->rx_to_clean = nic->rxs;
Jeff Garzikca93ca42007-06-12 18:52:31 -04002083 nic->ru_running = RU_SUSPENDED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002084
2085 return 0;
2086}
2087
David Howells7d12e782006-10-05 14:55:46 +01002088static irqreturn_t e100_intr(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002089{
2090 struct net_device *netdev = dev_id;
2091 struct nic *nic = netdev_priv(netdev);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002092 u8 stat_ack = ioread8(&nic->csr->scb.stat_ack);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002093
2094 DPRINTK(INTR, DEBUG, "stat_ack = 0x%02X\n", stat_ack);
2095
Bruce Allanf26251e2009-01-04 17:12:04 -08002096 if (stat_ack == stat_ack_not_ours || /* Not our interrupt */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002097 stat_ack == stat_ack_not_present) /* Hardware is ejected */
2098 return IRQ_NONE;
2099
2100 /* Ack interrupt(s) */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002101 iowrite8(stat_ack, &nic->csr->scb.stat_ack);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002102
Jeff Garzikca93ca42007-06-12 18:52:31 -04002103 /* We hit Receive No Resource (RNR); restart RU after cleaning */
Bruce Allanf26251e2009-01-04 17:12:04 -08002104 if (stat_ack & stat_ack_rnr)
Jeff Garzikca93ca42007-06-12 18:52:31 -04002105 nic->ru_running = RU_SUSPENDED;
2106
Ben Hutchings288379f2009-01-19 16:43:59 -08002107 if (likely(napi_schedule_prep(&nic->napi))) {
Malli Chilakala0685c312005-06-17 17:31:44 -07002108 e100_disable_irq(nic);
Ben Hutchings288379f2009-01-19 16:43:59 -08002109 __napi_schedule(&nic->napi);
Malli Chilakala0685c312005-06-17 17:31:44 -07002110 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002111
2112 return IRQ_HANDLED;
2113}
2114
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002115static int e100_poll(struct napi_struct *napi, int budget)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002116{
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002117 struct nic *nic = container_of(napi, struct nic, napi);
Stephen Hemmingerddfce6b2007-10-05 17:19:47 -07002118 unsigned int work_done = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002119
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002120 e100_rx_clean(nic, &work_done, budget);
David S. Miller53e52c72008-01-07 21:06:12 -08002121 e100_tx_clean(nic);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002122
David S. Miller53e52c72008-01-07 21:06:12 -08002123 /* If budget not fully consumed, exit the polling mode */
2124 if (work_done < budget) {
Ben Hutchings288379f2009-01-19 16:43:59 -08002125 napi_complete(napi);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002126 e100_enable_irq(nic);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002127 }
2128
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002129 return work_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002130}
2131
2132#ifdef CONFIG_NET_POLL_CONTROLLER
2133static void e100_netpoll(struct net_device *netdev)
2134{
2135 struct nic *nic = netdev_priv(netdev);
Malli Chilakala611494d2005-08-25 13:06:52 -07002136
Linus Torvalds1da177e2005-04-16 15:20:36 -07002137 e100_disable_irq(nic);
David Howells7d12e782006-10-05 14:55:46 +01002138 e100_intr(nic->pdev->irq, netdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002139 e100_tx_clean(nic);
2140 e100_enable_irq(nic);
2141}
2142#endif
2143
Linus Torvalds1da177e2005-04-16 15:20:36 -07002144static int e100_set_mac_address(struct net_device *netdev, void *p)
2145{
2146 struct nic *nic = netdev_priv(netdev);
2147 struct sockaddr *addr = p;
2148
2149 if (!is_valid_ether_addr(addr->sa_data))
2150 return -EADDRNOTAVAIL;
2151
2152 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2153 e100_exec_cb(nic, NULL, e100_setup_iaaddr);
2154
2155 return 0;
2156}
2157
2158static int e100_change_mtu(struct net_device *netdev, int new_mtu)
2159{
Bruce Allanf26251e2009-01-04 17:12:04 -08002160 if (new_mtu < ETH_ZLEN || new_mtu > ETH_DATA_LEN)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002161 return -EINVAL;
2162 netdev->mtu = new_mtu;
2163 return 0;
2164}
2165
2166static int e100_asf(struct nic *nic)
2167{
2168 /* ASF can be enabled from eeprom */
2169 return((nic->pdev->device >= 0x1050) && (nic->pdev->device <= 0x1057) &&
2170 (nic->eeprom[eeprom_config_asf] & eeprom_asf) &&
2171 !(nic->eeprom[eeprom_config_asf] & eeprom_gcl) &&
2172 ((nic->eeprom[eeprom_smbus_addr] & 0xFF) != 0xFE));
2173}
2174
2175static int e100_up(struct nic *nic)
2176{
2177 int err;
2178
Bruce Allanf26251e2009-01-04 17:12:04 -08002179 if ((err = e100_rx_alloc_list(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002180 return err;
Bruce Allanf26251e2009-01-04 17:12:04 -08002181 if ((err = e100_alloc_cbs(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002182 goto err_rx_clean_list;
Bruce Allanf26251e2009-01-04 17:12:04 -08002183 if ((err = e100_hw_init(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002184 goto err_clean_cbs;
2185 e100_set_multicast_list(nic->netdev);
Jeff Garzikca93ca42007-06-12 18:52:31 -04002186 e100_start_receiver(nic, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002187 mod_timer(&nic->watchdog, jiffies);
Bruce Allanf26251e2009-01-04 17:12:04 -08002188 if ((err = request_irq(nic->pdev->irq, e100_intr, IRQF_SHARED,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002189 nic->netdev->name, nic->netdev)))
2190 goto err_no_irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002191 netif_wake_queue(nic->netdev);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002192 napi_enable(&nic->napi);
Malli Chilakala0236ebb2005-04-28 19:17:42 -07002193 /* enable ints _after_ enabling poll, preventing a race between
2194 * disable ints+schedule */
2195 e100_enable_irq(nic);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002196 return 0;
2197
2198err_no_irq:
2199 del_timer_sync(&nic->watchdog);
2200err_clean_cbs:
2201 e100_clean_cbs(nic);
2202err_rx_clean_list:
2203 e100_rx_clean_list(nic);
2204 return err;
2205}
2206
2207static void e100_down(struct nic *nic)
2208{
Malli Chilakala0236ebb2005-04-28 19:17:42 -07002209 /* wait here for poll to complete */
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002210 napi_disable(&nic->napi);
Malli Chilakala0236ebb2005-04-28 19:17:42 -07002211 netif_stop_queue(nic->netdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002212 e100_hw_reset(nic);
2213 free_irq(nic->pdev->irq, nic->netdev);
2214 del_timer_sync(&nic->watchdog);
2215 netif_carrier_off(nic->netdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002216 e100_clean_cbs(nic);
2217 e100_rx_clean_list(nic);
2218}
2219
2220static void e100_tx_timeout(struct net_device *netdev)
2221{
2222 struct nic *nic = netdev_priv(netdev);
2223
Jesse Brandeburg05479932006-01-17 15:01:10 -08002224 /* Reset outside of interrupt context, to avoid request_irq
Malli Chilakala2acdb1e2005-04-28 19:16:58 -07002225 * in interrupt context */
2226 schedule_work(&nic->tx_timeout_task);
2227}
2228
David Howellsc4028952006-11-22 14:57:56 +00002229static void e100_tx_timeout_task(struct work_struct *work)
Malli Chilakala2acdb1e2005-04-28 19:16:58 -07002230{
David Howellsc4028952006-11-22 14:57:56 +00002231 struct nic *nic = container_of(work, struct nic, tx_timeout_task);
2232 struct net_device *netdev = nic->netdev;
Malli Chilakala2acdb1e2005-04-28 19:16:58 -07002233
Linus Torvalds1da177e2005-04-16 15:20:36 -07002234 DPRINTK(TX_ERR, DEBUG, "scb.status=0x%02X\n",
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002235 ioread8(&nic->csr->scb.status));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002236 e100_down(netdev_priv(netdev));
2237 e100_up(netdev_priv(netdev));
2238}
2239
2240static int e100_loopback_test(struct nic *nic, enum loopback loopback_mode)
2241{
2242 int err;
2243 struct sk_buff *skb;
2244
2245 /* Use driver resources to perform internal MAC or PHY
2246 * loopback test. A single packet is prepared and transmitted
2247 * in loopback mode, and the test passes if the received
2248 * packet compares byte-for-byte to the transmitted packet. */
2249
Bruce Allanf26251e2009-01-04 17:12:04 -08002250 if ((err = e100_rx_alloc_list(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002251 return err;
Bruce Allanf26251e2009-01-04 17:12:04 -08002252 if ((err = e100_alloc_cbs(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002253 goto err_clean_rx;
2254
2255 /* ICH PHY loopback is broken so do MAC loopback instead */
Bruce Allanf26251e2009-01-04 17:12:04 -08002256 if (nic->flags & ich && loopback_mode == lb_phy)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002257 loopback_mode = lb_mac;
2258
2259 nic->loopback = loopback_mode;
Bruce Allanf26251e2009-01-04 17:12:04 -08002260 if ((err = e100_hw_init(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002261 goto err_loopback_none;
2262
Bruce Allanf26251e2009-01-04 17:12:04 -08002263 if (loopback_mode == lb_phy)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002264 mdio_write(nic->netdev, nic->mii.phy_id, MII_BMCR,
2265 BMCR_LOOPBACK);
2266
Jeff Garzikca93ca42007-06-12 18:52:31 -04002267 e100_start_receiver(nic, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002268
Bruce Allanf26251e2009-01-04 17:12:04 -08002269 if (!(skb = netdev_alloc_skb(nic->netdev, ETH_DATA_LEN))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002270 err = -ENOMEM;
2271 goto err_loopback_none;
2272 }
2273 skb_put(skb, ETH_DATA_LEN);
2274 memset(skb->data, 0xFF, ETH_DATA_LEN);
2275 e100_xmit_frame(skb, nic->netdev);
2276
2277 msleep(10);
2278
Jesse Brandeburgaa49cdd2006-03-15 10:55:24 -08002279 pci_dma_sync_single_for_cpu(nic->pdev, nic->rx_to_clean->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00002280 RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
Jesse Brandeburgaa49cdd2006-03-15 10:55:24 -08002281
Bruce Allanf26251e2009-01-04 17:12:04 -08002282 if (memcmp(nic->rx_to_clean->skb->data + sizeof(struct rfd),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002283 skb->data, ETH_DATA_LEN))
2284 err = -EAGAIN;
2285
2286err_loopback_none:
2287 mdio_write(nic->netdev, nic->mii.phy_id, MII_BMCR, 0);
2288 nic->loopback = lb_none;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002289 e100_clean_cbs(nic);
Jesse Brandeburgaa49cdd2006-03-15 10:55:24 -08002290 e100_hw_reset(nic);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002291err_clean_rx:
2292 e100_rx_clean_list(nic);
2293 return err;
2294}
2295
2296#define MII_LED_CONTROL 0x1B
Bruce Allanb55de802009-03-21 13:25:25 -07002297#define E100_82552_LED_OVERRIDE 0x19
2298#define E100_82552_LED_ON 0x000F /* LEDTX and LED_RX both on */
2299#define E100_82552_LED_OFF 0x000A /* LEDTX and LED_RX both off */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002300static void e100_blink_led(unsigned long data)
2301{
2302 struct nic *nic = (struct nic *)data;
2303 enum led_state {
2304 led_on = 0x01,
2305 led_off = 0x04,
2306 led_on_559 = 0x05,
2307 led_on_557 = 0x07,
2308 };
Bruce Allanb55de802009-03-21 13:25:25 -07002309 u16 led_reg = MII_LED_CONTROL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002310
Bruce Allanb55de802009-03-21 13:25:25 -07002311 if (nic->phy == phy_82552_v) {
2312 led_reg = E100_82552_LED_OVERRIDE;
2313
2314 nic->leds = (nic->leds == E100_82552_LED_ON) ?
2315 E100_82552_LED_OFF : E100_82552_LED_ON;
2316 } else {
2317 nic->leds = (nic->leds & led_on) ? led_off :
2318 (nic->mac < mac_82559_D101M) ? led_on_557 :
2319 led_on_559;
2320 }
2321 mdio_write(nic->netdev, nic->mii.phy_id, led_reg, nic->leds);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002322 mod_timer(&nic->blink_timer, jiffies + HZ / 4);
2323}
2324
2325static int e100_get_settings(struct net_device *netdev, struct ethtool_cmd *cmd)
2326{
2327 struct nic *nic = netdev_priv(netdev);
2328 return mii_ethtool_gset(&nic->mii, cmd);
2329}
2330
2331static int e100_set_settings(struct net_device *netdev, struct ethtool_cmd *cmd)
2332{
2333 struct nic *nic = netdev_priv(netdev);
2334 int err;
2335
2336 mdio_write(netdev, nic->mii.phy_id, MII_BMCR, BMCR_RESET);
2337 err = mii_ethtool_sset(&nic->mii, cmd);
2338 e100_exec_cb(nic, NULL, e100_configure);
2339
2340 return err;
2341}
2342
2343static void e100_get_drvinfo(struct net_device *netdev,
2344 struct ethtool_drvinfo *info)
2345{
2346 struct nic *nic = netdev_priv(netdev);
2347 strcpy(info->driver, DRV_NAME);
2348 strcpy(info->version, DRV_VERSION);
2349 strcpy(info->fw_version, "N/A");
2350 strcpy(info->bus_info, pci_name(nic->pdev));
2351}
2352
Auke Kokabf9b902007-12-05 11:57:37 -08002353#define E100_PHY_REGS 0x1C
Linus Torvalds1da177e2005-04-16 15:20:36 -07002354static int e100_get_regs_len(struct net_device *netdev)
2355{
2356 struct nic *nic = netdev_priv(netdev);
Auke Kokabf9b902007-12-05 11:57:37 -08002357 return 1 + E100_PHY_REGS + sizeof(nic->mem->dump_buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002358}
2359
2360static void e100_get_regs(struct net_device *netdev,
2361 struct ethtool_regs *regs, void *p)
2362{
2363 struct nic *nic = netdev_priv(netdev);
2364 u32 *buff = p;
2365 int i;
2366
Auke Kok44c10132007-06-08 15:46:36 -07002367 regs->version = (1 << 24) | nic->pdev->revision;
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002368 buff[0] = ioread8(&nic->csr->scb.cmd_hi) << 24 |
2369 ioread8(&nic->csr->scb.cmd_lo) << 16 |
2370 ioread16(&nic->csr->scb.status);
Bruce Allanf26251e2009-01-04 17:12:04 -08002371 for (i = E100_PHY_REGS; i >= 0; i--)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002372 buff[1 + E100_PHY_REGS - i] =
2373 mdio_read(netdev, nic->mii.phy_id, i);
2374 memset(nic->mem->dump_buf, 0, sizeof(nic->mem->dump_buf));
2375 e100_exec_cb(nic, NULL, e100_dump);
2376 msleep(10);
2377 memcpy(&buff[2 + E100_PHY_REGS], nic->mem->dump_buf,
2378 sizeof(nic->mem->dump_buf));
2379}
2380
2381static void e100_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
2382{
2383 struct nic *nic = netdev_priv(netdev);
2384 wol->supported = (nic->mac >= mac_82558_D101_A4) ? WAKE_MAGIC : 0;
2385 wol->wolopts = (nic->flags & wol_magic) ? WAKE_MAGIC : 0;
2386}
2387
2388static int e100_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
2389{
2390 struct nic *nic = netdev_priv(netdev);
2391
Rafael J. Wysockibc79fc82008-10-29 14:22:18 -07002392 if ((wol->wolopts && wol->wolopts != WAKE_MAGIC) ||
2393 !device_can_wakeup(&nic->pdev->dev))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002394 return -EOPNOTSUPP;
2395
Bruce Allanf26251e2009-01-04 17:12:04 -08002396 if (wol->wolopts)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002397 nic->flags |= wol_magic;
2398 else
2399 nic->flags &= ~wol_magic;
2400
Rafael J. Wysockibc79fc82008-10-29 14:22:18 -07002401 device_set_wakeup_enable(&nic->pdev->dev, wol->wolopts);
2402
Linus Torvalds1da177e2005-04-16 15:20:36 -07002403 e100_exec_cb(nic, NULL, e100_configure);
2404
2405 return 0;
2406}
2407
2408static u32 e100_get_msglevel(struct net_device *netdev)
2409{
2410 struct nic *nic = netdev_priv(netdev);
2411 return nic->msg_enable;
2412}
2413
2414static void e100_set_msglevel(struct net_device *netdev, u32 value)
2415{
2416 struct nic *nic = netdev_priv(netdev);
2417 nic->msg_enable = value;
2418}
2419
2420static int e100_nway_reset(struct net_device *netdev)
2421{
2422 struct nic *nic = netdev_priv(netdev);
2423 return mii_nway_restart(&nic->mii);
2424}
2425
2426static u32 e100_get_link(struct net_device *netdev)
2427{
2428 struct nic *nic = netdev_priv(netdev);
2429 return mii_link_ok(&nic->mii);
2430}
2431
2432static int e100_get_eeprom_len(struct net_device *netdev)
2433{
2434 struct nic *nic = netdev_priv(netdev);
2435 return nic->eeprom_wc << 1;
2436}
2437
2438#define E100_EEPROM_MAGIC 0x1234
2439static int e100_get_eeprom(struct net_device *netdev,
2440 struct ethtool_eeprom *eeprom, u8 *bytes)
2441{
2442 struct nic *nic = netdev_priv(netdev);
2443
2444 eeprom->magic = E100_EEPROM_MAGIC;
2445 memcpy(bytes, &((u8 *)nic->eeprom)[eeprom->offset], eeprom->len);
2446
2447 return 0;
2448}
2449
2450static int e100_set_eeprom(struct net_device *netdev,
2451 struct ethtool_eeprom *eeprom, u8 *bytes)
2452{
2453 struct nic *nic = netdev_priv(netdev);
2454
Bruce Allanf26251e2009-01-04 17:12:04 -08002455 if (eeprom->magic != E100_EEPROM_MAGIC)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002456 return -EINVAL;
2457
2458 memcpy(&((u8 *)nic->eeprom)[eeprom->offset], bytes, eeprom->len);
2459
2460 return e100_eeprom_save(nic, eeprom->offset >> 1,
2461 (eeprom->len >> 1) + 1);
2462}
2463
2464static void e100_get_ringparam(struct net_device *netdev,
2465 struct ethtool_ringparam *ring)
2466{
2467 struct nic *nic = netdev_priv(netdev);
2468 struct param_range *rfds = &nic->params.rfds;
2469 struct param_range *cbs = &nic->params.cbs;
2470
2471 ring->rx_max_pending = rfds->max;
2472 ring->tx_max_pending = cbs->max;
2473 ring->rx_mini_max_pending = 0;
2474 ring->rx_jumbo_max_pending = 0;
2475 ring->rx_pending = rfds->count;
2476 ring->tx_pending = cbs->count;
2477 ring->rx_mini_pending = 0;
2478 ring->rx_jumbo_pending = 0;
2479}
2480
2481static int e100_set_ringparam(struct net_device *netdev,
2482 struct ethtool_ringparam *ring)
2483{
2484 struct nic *nic = netdev_priv(netdev);
2485 struct param_range *rfds = &nic->params.rfds;
2486 struct param_range *cbs = &nic->params.cbs;
2487
Jesse Brandeburg05479932006-01-17 15:01:10 -08002488 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002489 return -EINVAL;
2490
Bruce Allanf26251e2009-01-04 17:12:04 -08002491 if (netif_running(netdev))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002492 e100_down(nic);
2493 rfds->count = max(ring->rx_pending, rfds->min);
2494 rfds->count = min(rfds->count, rfds->max);
2495 cbs->count = max(ring->tx_pending, cbs->min);
2496 cbs->count = min(cbs->count, cbs->max);
2497 DPRINTK(DRV, INFO, "Ring Param settings: rx: %d, tx %d\n",
2498 rfds->count, cbs->count);
Bruce Allanf26251e2009-01-04 17:12:04 -08002499 if (netif_running(netdev))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002500 e100_up(nic);
2501
2502 return 0;
2503}
2504
2505static const char e100_gstrings_test[][ETH_GSTRING_LEN] = {
2506 "Link test (on/offline)",
2507 "Eeprom test (on/offline)",
2508 "Self test (offline)",
2509 "Mac loopback (offline)",
2510 "Phy loopback (offline)",
2511};
Alejandro Martinez Ruiz4c3616c2007-10-18 10:00:15 +02002512#define E100_TEST_LEN ARRAY_SIZE(e100_gstrings_test)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002513
Linus Torvalds1da177e2005-04-16 15:20:36 -07002514static void e100_diag_test(struct net_device *netdev,
2515 struct ethtool_test *test, u64 *data)
2516{
2517 struct ethtool_cmd cmd;
2518 struct nic *nic = netdev_priv(netdev);
2519 int i, err;
2520
2521 memset(data, 0, E100_TEST_LEN * sizeof(u64));
2522 data[0] = !mii_link_ok(&nic->mii);
2523 data[1] = e100_eeprom_load(nic);
Bruce Allanf26251e2009-01-04 17:12:04 -08002524 if (test->flags & ETH_TEST_FL_OFFLINE) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002525
2526 /* save speed, duplex & autoneg settings */
2527 err = mii_ethtool_gset(&nic->mii, &cmd);
2528
Bruce Allanf26251e2009-01-04 17:12:04 -08002529 if (netif_running(netdev))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002530 e100_down(nic);
2531 data[2] = e100_self_test(nic);
2532 data[3] = e100_loopback_test(nic, lb_mac);
2533 data[4] = e100_loopback_test(nic, lb_phy);
2534
2535 /* restore speed, duplex & autoneg settings */
2536 err = mii_ethtool_sset(&nic->mii, &cmd);
2537
Bruce Allanf26251e2009-01-04 17:12:04 -08002538 if (netif_running(netdev))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002539 e100_up(nic);
2540 }
Bruce Allanf26251e2009-01-04 17:12:04 -08002541 for (i = 0; i < E100_TEST_LEN; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002542 test->flags |= data[i] ? ETH_TEST_FL_FAILED : 0;
Malli Chilakalaa074fb82005-08-25 13:05:57 -07002543
2544 msleep_interruptible(4 * 1000);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002545}
2546
2547static int e100_phys_id(struct net_device *netdev, u32 data)
2548{
2549 struct nic *nic = netdev_priv(netdev);
Bruce Allanb55de802009-03-21 13:25:25 -07002550 u16 led_reg = (nic->phy == phy_82552_v) ? E100_82552_LED_OVERRIDE :
2551 MII_LED_CONTROL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002552
Bruce Allanf26251e2009-01-04 17:12:04 -08002553 if (!data || data > (u32)(MAX_SCHEDULE_TIMEOUT / HZ))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002554 data = (u32)(MAX_SCHEDULE_TIMEOUT / HZ);
2555 mod_timer(&nic->blink_timer, jiffies);
2556 msleep_interruptible(data * 1000);
2557 del_timer_sync(&nic->blink_timer);
Bruce Allanb55de802009-03-21 13:25:25 -07002558 mdio_write(netdev, nic->mii.phy_id, led_reg, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002559
2560 return 0;
2561}
2562
2563static const char e100_gstrings_stats[][ETH_GSTRING_LEN] = {
2564 "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
2565 "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
2566 "rx_length_errors", "rx_over_errors", "rx_crc_errors",
2567 "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
2568 "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
2569 "tx_heartbeat_errors", "tx_window_errors",
2570 /* device-specific stats */
2571 "tx_deferred", "tx_single_collisions", "tx_multi_collisions",
2572 "tx_flow_control_pause", "rx_flow_control_pause",
2573 "rx_flow_control_unsupported", "tx_tco_packets", "rx_tco_packets",
2574};
2575#define E100_NET_STATS_LEN 21
Alejandro Martinez Ruiz4c3616c2007-10-18 10:00:15 +02002576#define E100_STATS_LEN ARRAY_SIZE(e100_gstrings_stats)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002577
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002578static int e100_get_sset_count(struct net_device *netdev, int sset)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002579{
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002580 switch (sset) {
2581 case ETH_SS_TEST:
2582 return E100_TEST_LEN;
2583 case ETH_SS_STATS:
2584 return E100_STATS_LEN;
2585 default:
2586 return -EOPNOTSUPP;
2587 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002588}
2589
2590static void e100_get_ethtool_stats(struct net_device *netdev,
2591 struct ethtool_stats *stats, u64 *data)
2592{
2593 struct nic *nic = netdev_priv(netdev);
2594 int i;
2595
Bruce Allanf26251e2009-01-04 17:12:04 -08002596 for (i = 0; i < E100_NET_STATS_LEN; i++)
Jeff Garzik09f75cd2007-10-03 17:41:50 -07002597 data[i] = ((unsigned long *)&netdev->stats)[i];
Linus Torvalds1da177e2005-04-16 15:20:36 -07002598
2599 data[i++] = nic->tx_deferred;
2600 data[i++] = nic->tx_single_collisions;
2601 data[i++] = nic->tx_multiple_collisions;
2602 data[i++] = nic->tx_fc_pause;
2603 data[i++] = nic->rx_fc_pause;
2604 data[i++] = nic->rx_fc_unsupported;
2605 data[i++] = nic->tx_tco_frames;
2606 data[i++] = nic->rx_tco_frames;
2607}
2608
2609static void e100_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
2610{
Bruce Allanf26251e2009-01-04 17:12:04 -08002611 switch (stringset) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002612 case ETH_SS_TEST:
2613 memcpy(data, *e100_gstrings_test, sizeof(e100_gstrings_test));
2614 break;
2615 case ETH_SS_STATS:
2616 memcpy(data, *e100_gstrings_stats, sizeof(e100_gstrings_stats));
2617 break;
2618 }
2619}
2620
Jeff Garzik7282d492006-09-13 14:30:00 -04002621static const struct ethtool_ops e100_ethtool_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002622 .get_settings = e100_get_settings,
2623 .set_settings = e100_set_settings,
2624 .get_drvinfo = e100_get_drvinfo,
2625 .get_regs_len = e100_get_regs_len,
2626 .get_regs = e100_get_regs,
2627 .get_wol = e100_get_wol,
2628 .set_wol = e100_set_wol,
2629 .get_msglevel = e100_get_msglevel,
2630 .set_msglevel = e100_set_msglevel,
2631 .nway_reset = e100_nway_reset,
2632 .get_link = e100_get_link,
2633 .get_eeprom_len = e100_get_eeprom_len,
2634 .get_eeprom = e100_get_eeprom,
2635 .set_eeprom = e100_set_eeprom,
2636 .get_ringparam = e100_get_ringparam,
2637 .set_ringparam = e100_set_ringparam,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002638 .self_test = e100_diag_test,
2639 .get_strings = e100_get_strings,
2640 .phys_id = e100_phys_id,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002641 .get_ethtool_stats = e100_get_ethtool_stats,
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002642 .get_sset_count = e100_get_sset_count,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002643};
2644
2645static int e100_do_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2646{
2647 struct nic *nic = netdev_priv(netdev);
2648
2649 return generic_mii_ioctl(&nic->mii, if_mii(ifr), cmd, NULL);
2650}
2651
2652static int e100_alloc(struct nic *nic)
2653{
2654 nic->mem = pci_alloc_consistent(nic->pdev, sizeof(struct mem),
2655 &nic->dma_addr);
2656 return nic->mem ? 0 : -ENOMEM;
2657}
2658
2659static void e100_free(struct nic *nic)
2660{
Bruce Allanf26251e2009-01-04 17:12:04 -08002661 if (nic->mem) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002662 pci_free_consistent(nic->pdev, sizeof(struct mem),
2663 nic->mem, nic->dma_addr);
2664 nic->mem = NULL;
2665 }
2666}
2667
2668static int e100_open(struct net_device *netdev)
2669{
2670 struct nic *nic = netdev_priv(netdev);
2671 int err = 0;
2672
2673 netif_carrier_off(netdev);
Bruce Allanf26251e2009-01-04 17:12:04 -08002674 if ((err = e100_up(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002675 DPRINTK(IFUP, ERR, "Cannot open interface, aborting.\n");
2676 return err;
2677}
2678
2679static int e100_close(struct net_device *netdev)
2680{
2681 e100_down(netdev_priv(netdev));
2682 return 0;
2683}
2684
Stephen Hemmingeracc78422008-11-19 22:21:53 -08002685static const struct net_device_ops e100_netdev_ops = {
2686 .ndo_open = e100_open,
2687 .ndo_stop = e100_close,
Stephen Hemminger00829822008-11-20 20:14:53 -08002688 .ndo_start_xmit = e100_xmit_frame,
Stephen Hemmingeracc78422008-11-19 22:21:53 -08002689 .ndo_validate_addr = eth_validate_addr,
2690 .ndo_set_multicast_list = e100_set_multicast_list,
2691 .ndo_set_mac_address = e100_set_mac_address,
2692 .ndo_change_mtu = e100_change_mtu,
2693 .ndo_do_ioctl = e100_do_ioctl,
2694 .ndo_tx_timeout = e100_tx_timeout,
2695#ifdef CONFIG_NET_POLL_CONTROLLER
2696 .ndo_poll_controller = e100_netpoll,
2697#endif
2698};
2699
Linus Torvalds1da177e2005-04-16 15:20:36 -07002700static int __devinit e100_probe(struct pci_dev *pdev,
2701 const struct pci_device_id *ent)
2702{
2703 struct net_device *netdev;
2704 struct nic *nic;
2705 int err;
2706
Bruce Allanf26251e2009-01-04 17:12:04 -08002707 if (!(netdev = alloc_etherdev(sizeof(struct nic)))) {
2708 if (((1 << debug) - 1) & NETIF_MSG_PROBE)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002709 printk(KERN_ERR PFX "Etherdev alloc failed, abort.\n");
2710 return -ENOMEM;
2711 }
2712
Stephen Hemmingeracc78422008-11-19 22:21:53 -08002713 netdev->netdev_ops = &e100_netdev_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002714 SET_ETHTOOL_OPS(netdev, &e100_ethtool_ops);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002715 netdev->watchdog_timeo = E100_WATCHDOG_PERIOD;
Auke Kok0eb5a342006-09-27 12:53:17 -07002716 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002717
2718 nic = netdev_priv(netdev);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002719 netif_napi_add(netdev, &nic->napi, e100_poll, E100_NAPI_WEIGHT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002720 nic->netdev = netdev;
2721 nic->pdev = pdev;
2722 nic->msg_enable = (1 << debug) - 1;
Andreas Mohr72001762009-06-10 09:55:04 +00002723 nic->mdio_ctrl = mdio_ctrl_hw;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002724 pci_set_drvdata(pdev, netdev);
2725
Bruce Allanf26251e2009-01-04 17:12:04 -08002726 if ((err = pci_enable_device(pdev))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002727 DPRINTK(PROBE, ERR, "Cannot enable PCI device, aborting.\n");
2728 goto err_out_free_dev;
2729 }
2730
Bruce Allanf26251e2009-01-04 17:12:04 -08002731 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002732 DPRINTK(PROBE, ERR, "Cannot find proper PCI device "
2733 "base address, aborting.\n");
2734 err = -ENODEV;
2735 goto err_out_disable_pdev;
2736 }
2737
Bruce Allanf26251e2009-01-04 17:12:04 -08002738 if ((err = pci_request_regions(pdev, DRV_NAME))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002739 DPRINTK(PROBE, ERR, "Cannot obtain PCI resources, aborting.\n");
2740 goto err_out_disable_pdev;
2741 }
2742
Yang Hongyang284901a2009-04-06 19:01:15 -07002743 if ((err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002744 DPRINTK(PROBE, ERR, "No usable DMA configuration, aborting.\n");
2745 goto err_out_free_res;
2746 }
2747
Linus Torvalds1da177e2005-04-16 15:20:36 -07002748 SET_NETDEV_DEV(netdev, &pdev->dev);
2749
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002750 if (use_io)
2751 DPRINTK(PROBE, INFO, "using i/o access mode\n");
2752
2753 nic->csr = pci_iomap(pdev, (use_io ? 1 : 0), sizeof(struct csr));
Bruce Allanf26251e2009-01-04 17:12:04 -08002754 if (!nic->csr) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002755 DPRINTK(PROBE, ERR, "Cannot map device registers, aborting.\n");
2756 err = -ENOMEM;
2757 goto err_out_free_res;
2758 }
2759
Bruce Allanf26251e2009-01-04 17:12:04 -08002760 if (ent->driver_data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002761 nic->flags |= ich;
2762 else
2763 nic->flags &= ~ich;
2764
2765 e100_get_defaults(nic);
2766
Malli Chilakala1f533672005-04-28 19:17:20 -07002767 /* locks must be initialized before calling hw_reset */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002768 spin_lock_init(&nic->cb_lock);
2769 spin_lock_init(&nic->cmd_lock);
ODonnell, Michaelac7c6662006-01-11 11:26:22 -08002770 spin_lock_init(&nic->mdio_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002771
2772 /* Reset the device before pci_set_master() in case device is in some
2773 * funky state and has an interrupt pending - hint: we don't have the
2774 * interrupt handler registered yet. */
2775 e100_hw_reset(nic);
2776
2777 pci_set_master(pdev);
2778
2779 init_timer(&nic->watchdog);
2780 nic->watchdog.function = e100_watchdog;
2781 nic->watchdog.data = (unsigned long)nic;
2782 init_timer(&nic->blink_timer);
2783 nic->blink_timer.function = e100_blink_led;
2784 nic->blink_timer.data = (unsigned long)nic;
2785
David Howellsc4028952006-11-22 14:57:56 +00002786 INIT_WORK(&nic->tx_timeout_task, e100_tx_timeout_task);
Malli Chilakala2acdb1e2005-04-28 19:16:58 -07002787
Bruce Allanf26251e2009-01-04 17:12:04 -08002788 if ((err = e100_alloc(nic))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002789 DPRINTK(PROBE, ERR, "Cannot alloc driver memory, aborting.\n");
2790 goto err_out_iounmap;
2791 }
2792
Bruce Allanf26251e2009-01-04 17:12:04 -08002793 if ((err = e100_eeprom_load(nic)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002794 goto err_out_free;
2795
Malli Chilakalaf92d8722005-06-17 17:30:22 -07002796 e100_phy_init(nic);
2797
Linus Torvalds1da177e2005-04-16 15:20:36 -07002798 memcpy(netdev->dev_addr, nic->eeprom, ETH_ALEN);
John W. Linvillea92dd922005-09-12 10:48:56 -04002799 memcpy(netdev->perm_addr, nic->eeprom, ETH_ALEN);
Jesse Brandeburg948cd432007-04-26 09:43:11 -07002800 if (!is_valid_ether_addr(netdev->perm_addr)) {
2801 if (!eeprom_bad_csum_allow) {
2802 DPRINTK(PROBE, ERR, "Invalid MAC address from "
2803 "EEPROM, aborting.\n");
2804 err = -EAGAIN;
2805 goto err_out_free;
2806 } else {
2807 DPRINTK(PROBE, ERR, "Invalid MAC address from EEPROM, "
2808 "you MUST configure one.\n");
2809 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002810 }
2811
2812 /* Wol magic packet can be enabled from eeprom */
Bruce Allanf26251e2009-01-04 17:12:04 -08002813 if ((nic->mac >= mac_82558_D101_A4) &&
Rafael J. Wysockibc79fc82008-10-29 14:22:18 -07002814 (nic->eeprom[eeprom_id] & eeprom_id_wol)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002815 nic->flags |= wol_magic;
Rafael J. Wysockibc79fc82008-10-29 14:22:18 -07002816 device_set_wakeup_enable(&pdev->dev, true);
2817 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002818
Malli Chilakala6bdacb12005-04-28 19:17:54 -07002819 /* ack any pending wake events, disable PME */
Rafael J. Wysockie7272402008-08-08 00:18:04 +02002820 pci_pme_active(pdev, false);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002821
2822 strcpy(netdev->name, "eth%d");
Bruce Allanf26251e2009-01-04 17:12:04 -08002823 if ((err = register_netdev(netdev))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002824 DPRINTK(PROBE, ERR, "Cannot register net device, aborting.\n");
2825 goto err_out_free;
2826 }
2827
Johannes Berge1749612008-10-27 15:59:26 -07002828 DPRINTK(PROBE, INFO, "addr 0x%llx, irq %d, MAC addr %pM\n",
Joe Perches0795af52007-10-03 17:59:30 -07002829 (unsigned long long)pci_resource_start(pdev, use_io ? 1 : 0),
Johannes Berge1749612008-10-27 15:59:26 -07002830 pdev->irq, netdev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002831
2832 return 0;
2833
2834err_out_free:
2835 e100_free(nic);
2836err_out_iounmap:
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002837 pci_iounmap(pdev, nic->csr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002838err_out_free_res:
2839 pci_release_regions(pdev);
2840err_out_disable_pdev:
2841 pci_disable_device(pdev);
2842err_out_free_dev:
2843 pci_set_drvdata(pdev, NULL);
2844 free_netdev(netdev);
2845 return err;
2846}
2847
2848static void __devexit e100_remove(struct pci_dev *pdev)
2849{
2850 struct net_device *netdev = pci_get_drvdata(pdev);
2851
Bruce Allanf26251e2009-01-04 17:12:04 -08002852 if (netdev) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002853 struct nic *nic = netdev_priv(netdev);
2854 unregister_netdev(netdev);
2855 e100_free(nic);
Jiri Slaby915e91d2008-01-29 22:49:16 +01002856 pci_iounmap(pdev, nic->csr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002857 free_netdev(netdev);
2858 pci_release_regions(pdev);
2859 pci_disable_device(pdev);
2860 pci_set_drvdata(pdev, NULL);
2861 }
2862}
2863
Bruce Allanb55de802009-03-21 13:25:25 -07002864#define E100_82552_SMARTSPEED 0x14 /* SmartSpeed Ctrl register */
2865#define E100_82552_REV_ANEG 0x0200 /* Reverse auto-negotiation */
2866#define E100_82552_ANEG_NOW 0x0400 /* Auto-negotiate now */
Thadeu Lima de Souza Cascardoac7c9922009-04-28 22:42:39 -07002867static void __e100_shutdown(struct pci_dev *pdev, bool *enable_wake)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002868{
2869 struct net_device *netdev = pci_get_drvdata(pdev);
2870 struct nic *nic = netdev_priv(netdev);
2871
Auke Kok824545e2006-10-24 14:49:44 -07002872 if (netif_running(netdev))
Auke Kokf9022832008-03-03 14:37:31 -08002873 e100_down(nic);
Auke Kok518d8332007-01-29 14:31:16 -08002874 netif_device_detach(netdev);
Auke Koka53a33d2007-01-31 11:02:46 -08002875
Linus Torvalds1da177e2005-04-16 15:20:36 -07002876 pci_save_state(pdev);
Auke Koke8e82b72006-10-19 23:28:12 -07002877
2878 if ((nic->flags & wol_magic) | e100_asf(nic)) {
Bruce Allanb55de802009-03-21 13:25:25 -07002879 /* enable reverse auto-negotiation */
2880 if (nic->phy == phy_82552_v) {
2881 u16 smartspeed = mdio_read(netdev, nic->mii.phy_id,
2882 E100_82552_SMARTSPEED);
2883
2884 mdio_write(netdev, nic->mii.phy_id,
2885 E100_82552_SMARTSPEED, smartspeed |
2886 E100_82552_REV_ANEG | E100_82552_ANEG_NOW);
2887 }
Thadeu Lima de Souza Cascardoac7c9922009-04-28 22:42:39 -07002888 *enable_wake = true;
Auke Koke8e82b72006-10-19 23:28:12 -07002889 } else {
Thadeu Lima de Souza Cascardoac7c9922009-04-28 22:42:39 -07002890 *enable_wake = false;
Auke Koke8e82b72006-10-19 23:28:12 -07002891 }
Auke Kok975b3662006-09-27 12:53:25 -07002892
Auke Kok8543da62007-12-12 16:30:42 -08002893 pci_disable_device(pdev);
Thadeu Lima de Souza Cascardoac7c9922009-04-28 22:42:39 -07002894}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002895
Thadeu Lima de Souza Cascardoac7c9922009-04-28 22:42:39 -07002896static int __e100_power_off(struct pci_dev *pdev, bool wake)
2897{
Rafael J. Wysocki6905b1f2009-06-14 09:46:46 +00002898 if (wake)
Thadeu Lima de Souza Cascardoac7c9922009-04-28 22:42:39 -07002899 return pci_prepare_to_sleep(pdev);
Rafael J. Wysocki6905b1f2009-06-14 09:46:46 +00002900
2901 pci_wake_from_d3(pdev, false);
2902 pci_set_power_state(pdev, PCI_D3hot);
2903
2904 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002905}
2906
Auke Kokf9022832008-03-03 14:37:31 -08002907#ifdef CONFIG_PM
Thadeu Lima de Souza Cascardoac7c9922009-04-28 22:42:39 -07002908static int e100_suspend(struct pci_dev *pdev, pm_message_t state)
2909{
2910 bool wake;
2911 __e100_shutdown(pdev, &wake);
2912 return __e100_power_off(pdev, wake);
2913}
2914
Linus Torvalds1da177e2005-04-16 15:20:36 -07002915static int e100_resume(struct pci_dev *pdev)
2916{
2917 struct net_device *netdev = pci_get_drvdata(pdev);
2918 struct nic *nic = netdev_priv(netdev);
2919
Auke Kok975b3662006-09-27 12:53:25 -07002920 pci_set_power_state(pdev, PCI_D0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002921 pci_restore_state(pdev);
Malli Chilakala6bdacb12005-04-28 19:17:54 -07002922 /* ack any pending wake events, disable PME */
Auke Kok975b3662006-09-27 12:53:25 -07002923 pci_enable_wake(pdev, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002924
Thadeu Lima de Souza Cascardo4b512d22009-04-14 23:14:10 -03002925 /* disable reverse auto-negotiation */
Bruce Allanb55de802009-03-21 13:25:25 -07002926 if (nic->phy == phy_82552_v) {
2927 u16 smartspeed = mdio_read(netdev, nic->mii.phy_id,
2928 E100_82552_SMARTSPEED);
2929
2930 mdio_write(netdev, nic->mii.phy_id,
2931 E100_82552_SMARTSPEED,
2932 smartspeed & ~(E100_82552_REV_ANEG));
2933 }
2934
Linus Torvalds1da177e2005-04-16 15:20:36 -07002935 netif_device_attach(netdev);
Auke Kok975b3662006-09-27 12:53:25 -07002936 if (netif_running(netdev))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002937 e100_up(nic);
2938
2939 return 0;
2940}
Auke Kok975b3662006-09-27 12:53:25 -07002941#endif /* CONFIG_PM */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002942
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07002943static void e100_shutdown(struct pci_dev *pdev)
Malli Chilakala6bdacb12005-04-28 19:17:54 -07002944{
Thadeu Lima de Souza Cascardoac7c9922009-04-28 22:42:39 -07002945 bool wake;
2946 __e100_shutdown(pdev, &wake);
2947 if (system_state == SYSTEM_POWER_OFF)
2948 __e100_power_off(pdev, wake);
Malli Chilakala6bdacb12005-04-28 19:17:54 -07002949}
2950
Auke Kok2cc30492006-06-08 09:30:18 -07002951/* ------------------ PCI Error Recovery infrastructure -------------- */
2952/**
2953 * e100_io_error_detected - called when PCI error is detected.
2954 * @pdev: Pointer to PCI device
Andreas Mohr0a0863a2008-02-01 08:21:39 -08002955 * @state: The current pci connection state
Auke Kok2cc30492006-06-08 09:30:18 -07002956 */
2957static pci_ers_result_t e100_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
2958{
2959 struct net_device *netdev = pci_get_drvdata(pdev);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002960 struct nic *nic = netdev_priv(netdev);
Auke Kok2cc30492006-06-08 09:30:18 -07002961
Auke Kok2cc30492006-06-08 09:30:18 -07002962 netif_device_detach(netdev);
Andre Detschef681ce2009-06-08 00:42:30 -07002963
2964 if (state == pci_channel_io_perm_failure)
2965 return PCI_ERS_RESULT_DISCONNECT;
2966
2967 if (netif_running(netdev))
2968 e100_down(nic);
Linas Vepstasb1d26f22006-08-31 14:27:48 -07002969 pci_disable_device(pdev);
Auke Kok2cc30492006-06-08 09:30:18 -07002970
2971 /* Request a slot reset. */
2972 return PCI_ERS_RESULT_NEED_RESET;
2973}
2974
2975/**
2976 * e100_io_slot_reset - called after the pci bus has been reset.
2977 * @pdev: Pointer to PCI device
2978 *
2979 * Restart the card from scratch.
2980 */
2981static pci_ers_result_t e100_io_slot_reset(struct pci_dev *pdev)
2982{
2983 struct net_device *netdev = pci_get_drvdata(pdev);
2984 struct nic *nic = netdev_priv(netdev);
2985
2986 if (pci_enable_device(pdev)) {
2987 printk(KERN_ERR "e100: Cannot re-enable PCI device after reset.\n");
2988 return PCI_ERS_RESULT_DISCONNECT;
2989 }
2990 pci_set_master(pdev);
2991
2992 /* Only one device per card can do a reset */
2993 if (0 != PCI_FUNC(pdev->devfn))
2994 return PCI_ERS_RESULT_RECOVERED;
2995 e100_hw_reset(nic);
2996 e100_phy_init(nic);
2997
2998 return PCI_ERS_RESULT_RECOVERED;
2999}
3000
3001/**
3002 * e100_io_resume - resume normal operations
3003 * @pdev: Pointer to PCI device
3004 *
3005 * Resume normal operations after an error recovery
3006 * sequence has been completed.
3007 */
3008static void e100_io_resume(struct pci_dev *pdev)
3009{
3010 struct net_device *netdev = pci_get_drvdata(pdev);
3011 struct nic *nic = netdev_priv(netdev);
3012
3013 /* ack any pending wake events, disable PME */
3014 pci_enable_wake(pdev, 0, 0);
3015
3016 netif_device_attach(netdev);
3017 if (netif_running(netdev)) {
3018 e100_open(netdev);
3019 mod_timer(&nic->watchdog, jiffies);
3020 }
3021}
3022
3023static struct pci_error_handlers e100_err_handler = {
3024 .error_detected = e100_io_error_detected,
3025 .slot_reset = e100_io_slot_reset,
3026 .resume = e100_io_resume,
3027};
Malli Chilakala6bdacb12005-04-28 19:17:54 -07003028
Linus Torvalds1da177e2005-04-16 15:20:36 -07003029static struct pci_driver e100_driver = {
3030 .name = DRV_NAME,
3031 .id_table = e100_id_table,
3032 .probe = e100_probe,
3033 .remove = __devexit_p(e100_remove),
Auke Koke8e82b72006-10-19 23:28:12 -07003034#ifdef CONFIG_PM
Auke Kok975b3662006-09-27 12:53:25 -07003035 /* Power Management hooks */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003036 .suspend = e100_suspend,
3037 .resume = e100_resume,
3038#endif
Jesse Brandeburg05479932006-01-17 15:01:10 -08003039 .shutdown = e100_shutdown,
Auke Kok2cc30492006-06-08 09:30:18 -07003040 .err_handler = &e100_err_handler,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003041};
3042
3043static int __init e100_init_module(void)
3044{
Bruce Allanf26251e2009-01-04 17:12:04 -08003045 if (((1 << debug) - 1) & NETIF_MSG_DRV) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003046 printk(KERN_INFO PFX "%s, %s\n", DRV_DESCRIPTION, DRV_VERSION);
3047 printk(KERN_INFO PFX "%s\n", DRV_COPYRIGHT);
3048 }
Jeff Garzik29917622006-08-19 17:48:59 -04003049 return pci_register_driver(&e100_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003050}
3051
3052static void __exit e100_cleanup_module(void)
3053{
3054 pci_unregister_driver(&e100_driver);
3055}
3056
3057module_init(e100_init_module);
3058module_exit(e100_cleanup_module);