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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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146 */
147
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148#include <linux/module.h>
149#include <linux/moduleparam.h>
150#include <linux/kernel.h>
151#include <linux/types.h>
152#include <linux/slab.h>
153#include <linux/delay.h>
154#include <linux/init.h>
155#include <linux/pci.h>
Domen Puncer1e7f0bd2005-06-26 18:22:14 -0400156#include <linux/dma-mapping.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157#include <linux/netdevice.h>
158#include <linux/etherdevice.h>
159#include <linux/mii.h>
160#include <linux/if_vlan.h>
161#include <linux/skbuff.h>
162#include <linux/ethtool.h>
163#include <linux/string.h>
164#include <asm/unaligned.h>
165
166
167#define DRV_NAME "e100"
Auke Kok4e1dc972006-08-16 11:28:35 -0700168#define DRV_EXT "-NAPI"
Jesse Brandeburg773c9c12008-11-14 13:51:54 +0000169#define DRV_VERSION "3.5.23-k6"DRV_EXT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170#define DRV_DESCRIPTION "Intel(R) PRO/100 Network Driver"
Auke Kok4e1dc972006-08-16 11:28:35 -0700171#define DRV_COPYRIGHT "Copyright(c) 1999-2006 Intel Corporation"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172#define PFX DRV_NAME ": "
173
174#define E100_WATCHDOG_PERIOD (2 * HZ)
175#define E100_NAPI_WEIGHT 16
176
177MODULE_DESCRIPTION(DRV_DESCRIPTION);
178MODULE_AUTHOR(DRV_COPYRIGHT);
179MODULE_LICENSE("GPL");
180MODULE_VERSION(DRV_VERSION);
181
182static int debug = 3;
David S. Miller8fb6f732006-08-28 22:12:54 -0700183static int eeprom_bad_csum_allow = 0;
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700184static int use_io = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185module_param(debug, int, 0);
David S. Miller8fb6f732006-08-28 22:12:54 -0700186module_param(eeprom_bad_csum_allow, int, 0);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700187module_param(use_io, int, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
David S. Miller8fb6f732006-08-28 22:12:54 -0700189MODULE_PARM_DESC(eeprom_bad_csum_allow, "Allow bad eeprom checksums");
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700190MODULE_PARM_DESC(use_io, "Force use of i/o access mode");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191#define DPRINTK(nlevel, klevel, fmt, args...) \
192 (void)((NETIF_MSG_##nlevel & nic->msg_enable) && \
193 printk(KERN_##klevel PFX "%s: %s: " fmt, nic->netdev->name, \
Harvey Harrisonb39d66a2008-08-20 16:52:04 -0700194 __func__ , ## args))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195
196#define INTEL_8255X_ETHERNET_DEVICE(device_id, ich) {\
197 PCI_VENDOR_ID_INTEL, device_id, PCI_ANY_ID, PCI_ANY_ID, \
198 PCI_CLASS_NETWORK_ETHERNET << 8, 0xFFFF00, ich }
199static struct pci_device_id e100_id_table[] = {
200 INTEL_8255X_ETHERNET_DEVICE(0x1029, 0),
201 INTEL_8255X_ETHERNET_DEVICE(0x1030, 0),
202 INTEL_8255X_ETHERNET_DEVICE(0x1031, 3),
203 INTEL_8255X_ETHERNET_DEVICE(0x1032, 3),
204 INTEL_8255X_ETHERNET_DEVICE(0x1033, 3),
205 INTEL_8255X_ETHERNET_DEVICE(0x1034, 3),
206 INTEL_8255X_ETHERNET_DEVICE(0x1038, 3),
207 INTEL_8255X_ETHERNET_DEVICE(0x1039, 4),
208 INTEL_8255X_ETHERNET_DEVICE(0x103A, 4),
209 INTEL_8255X_ETHERNET_DEVICE(0x103B, 4),
210 INTEL_8255X_ETHERNET_DEVICE(0x103C, 4),
211 INTEL_8255X_ETHERNET_DEVICE(0x103D, 4),
212 INTEL_8255X_ETHERNET_DEVICE(0x103E, 4),
213 INTEL_8255X_ETHERNET_DEVICE(0x1050, 5),
214 INTEL_8255X_ETHERNET_DEVICE(0x1051, 5),
215 INTEL_8255X_ETHERNET_DEVICE(0x1052, 5),
216 INTEL_8255X_ETHERNET_DEVICE(0x1053, 5),
217 INTEL_8255X_ETHERNET_DEVICE(0x1054, 5),
218 INTEL_8255X_ETHERNET_DEVICE(0x1055, 5),
219 INTEL_8255X_ETHERNET_DEVICE(0x1056, 5),
220 INTEL_8255X_ETHERNET_DEVICE(0x1057, 5),
221 INTEL_8255X_ETHERNET_DEVICE(0x1059, 0),
222 INTEL_8255X_ETHERNET_DEVICE(0x1064, 6),
223 INTEL_8255X_ETHERNET_DEVICE(0x1065, 6),
224 INTEL_8255X_ETHERNET_DEVICE(0x1066, 6),
225 INTEL_8255X_ETHERNET_DEVICE(0x1067, 6),
226 INTEL_8255X_ETHERNET_DEVICE(0x1068, 6),
227 INTEL_8255X_ETHERNET_DEVICE(0x1069, 6),
228 INTEL_8255X_ETHERNET_DEVICE(0x106A, 6),
229 INTEL_8255X_ETHERNET_DEVICE(0x106B, 6),
Malli Chilakala042e2fb2005-04-28 19:20:14 -0700230 INTEL_8255X_ETHERNET_DEVICE(0x1091, 7),
231 INTEL_8255X_ETHERNET_DEVICE(0x1092, 7),
232 INTEL_8255X_ETHERNET_DEVICE(0x1093, 7),
233 INTEL_8255X_ETHERNET_DEVICE(0x1094, 7),
234 INTEL_8255X_ETHERNET_DEVICE(0x1095, 7),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235 INTEL_8255X_ETHERNET_DEVICE(0x1209, 0),
236 INTEL_8255X_ETHERNET_DEVICE(0x1229, 0),
237 INTEL_8255X_ETHERNET_DEVICE(0x2449, 2),
238 INTEL_8255X_ETHERNET_DEVICE(0x2459, 2),
239 INTEL_8255X_ETHERNET_DEVICE(0x245D, 2),
Malli Chilakala042e2fb2005-04-28 19:20:14 -0700240 INTEL_8255X_ETHERNET_DEVICE(0x27DC, 7),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 { 0, }
242};
243MODULE_DEVICE_TABLE(pci, e100_id_table);
244
245enum mac {
246 mac_82557_D100_A = 0,
247 mac_82557_D100_B = 1,
248 mac_82557_D100_C = 2,
249 mac_82558_D101_A4 = 4,
250 mac_82558_D101_B0 = 5,
251 mac_82559_D101M = 8,
252 mac_82559_D101S = 9,
253 mac_82550_D102 = 12,
254 mac_82550_D102_C = 13,
255 mac_82551_E = 14,
256 mac_82551_F = 15,
257 mac_82551_10 = 16,
258 mac_unknown = 0xFF,
259};
260
261enum phy {
262 phy_100a = 0x000003E0,
263 phy_100c = 0x035002A8,
264 phy_82555_tx = 0x015002A8,
265 phy_nsc_tx = 0x5C002000,
266 phy_82562_et = 0x033002A8,
267 phy_82562_em = 0x032002A8,
268 phy_82562_ek = 0x031002A8,
269 phy_82562_eh = 0x017002A8,
270 phy_unknown = 0xFFFFFFFF,
271};
272
273/* CSR (Control/Status Registers) */
274struct csr {
275 struct {
276 u8 status;
277 u8 stat_ack;
278 u8 cmd_lo;
279 u8 cmd_hi;
280 u32 gen_ptr;
281 } scb;
282 u32 port;
283 u16 flash_ctrl;
284 u8 eeprom_ctrl_lo;
285 u8 eeprom_ctrl_hi;
286 u32 mdi_ctrl;
287 u32 rx_dma_count;
288};
289
290enum scb_status {
David Acker7734f6e2007-11-08 10:17:41 -0800291 rus_no_res = 0x08,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 rus_ready = 0x10,
293 rus_mask = 0x3C,
294};
295
Jeff Garzikca93ca42007-06-12 18:52:31 -0400296enum ru_state {
297 RU_SUSPENDED = 0,
298 RU_RUNNING = 1,
299 RU_UNINITIALIZED = -1,
300};
301
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302enum scb_stat_ack {
303 stat_ack_not_ours = 0x00,
304 stat_ack_sw_gen = 0x04,
305 stat_ack_rnr = 0x10,
306 stat_ack_cu_idle = 0x20,
307 stat_ack_frame_rx = 0x40,
308 stat_ack_cu_cmd_done = 0x80,
309 stat_ack_not_present = 0xFF,
310 stat_ack_rx = (stat_ack_sw_gen | stat_ack_rnr | stat_ack_frame_rx),
311 stat_ack_tx = (stat_ack_cu_idle | stat_ack_cu_cmd_done),
312};
313
314enum scb_cmd_hi {
315 irq_mask_none = 0x00,
316 irq_mask_all = 0x01,
317 irq_sw_gen = 0x02,
318};
319
320enum scb_cmd_lo {
321 cuc_nop = 0x00,
322 ruc_start = 0x01,
323 ruc_load_base = 0x06,
324 cuc_start = 0x10,
325 cuc_resume = 0x20,
326 cuc_dump_addr = 0x40,
327 cuc_dump_stats = 0x50,
328 cuc_load_base = 0x60,
329 cuc_dump_reset = 0x70,
330};
331
332enum cuc_dump {
333 cuc_dump_complete = 0x0000A005,
334 cuc_dump_reset_complete = 0x0000A007,
335};
Jesse Brandeburg05479932006-01-17 15:01:10 -0800336
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337enum port {
338 software_reset = 0x0000,
339 selftest = 0x0001,
340 selective_reset = 0x0002,
341};
342
343enum eeprom_ctrl_lo {
344 eesk = 0x01,
345 eecs = 0x02,
346 eedi = 0x04,
347 eedo = 0x08,
348};
349
350enum mdi_ctrl {
351 mdi_write = 0x04000000,
352 mdi_read = 0x08000000,
353 mdi_ready = 0x10000000,
354};
355
356enum eeprom_op {
357 op_write = 0x05,
358 op_read = 0x06,
359 op_ewds = 0x10,
360 op_ewen = 0x13,
361};
362
363enum eeprom_offsets {
364 eeprom_cnfg_mdix = 0x03,
365 eeprom_id = 0x0A,
366 eeprom_config_asf = 0x0D,
367 eeprom_smbus_addr = 0x90,
368};
369
370enum eeprom_cnfg_mdix {
371 eeprom_mdix_enabled = 0x0080,
372};
373
374enum eeprom_id {
375 eeprom_id_wol = 0x0020,
376};
377
378enum eeprom_config_asf {
379 eeprom_asf = 0x8000,
380 eeprom_gcl = 0x4000,
381};
382
383enum cb_status {
384 cb_complete = 0x8000,
385 cb_ok = 0x2000,
386};
387
388enum cb_command {
389 cb_nop = 0x0000,
390 cb_iaaddr = 0x0001,
391 cb_config = 0x0002,
392 cb_multi = 0x0003,
393 cb_tx = 0x0004,
394 cb_ucode = 0x0005,
395 cb_dump = 0x0006,
396 cb_tx_sf = 0x0008,
397 cb_cid = 0x1f00,
398 cb_i = 0x2000,
399 cb_s = 0x4000,
400 cb_el = 0x8000,
401};
402
403struct rfd {
Al Viroaaf918b2007-12-10 18:32:49 +0000404 __le16 status;
405 __le16 command;
406 __le32 link;
407 __le32 rbd;
408 __le16 actual_size;
409 __le16 size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410};
411
412struct rx {
413 struct rx *next, *prev;
414 struct sk_buff *skb;
415 dma_addr_t dma_addr;
416};
417
418#if defined(__BIG_ENDIAN_BITFIELD)
419#define X(a,b) b,a
420#else
421#define X(a,b) a,b
422#endif
423struct config {
424/*0*/ u8 X(byte_count:6, pad0:2);
425/*1*/ u8 X(X(rx_fifo_limit:4, tx_fifo_limit:3), pad1:1);
426/*2*/ u8 adaptive_ifs;
427/*3*/ u8 X(X(X(X(mwi_enable:1, type_enable:1), read_align_enable:1),
428 term_write_cache_line:1), pad3:4);
429/*4*/ u8 X(rx_dma_max_count:7, pad4:1);
430/*5*/ u8 X(tx_dma_max_count:7, dma_max_count_enable:1);
431/*6*/ u8 X(X(X(X(X(X(X(late_scb_update:1, direct_rx_dma:1),
432 tno_intr:1), cna_intr:1), standard_tcb:1), standard_stat_counter:1),
433 rx_discard_overruns:1), rx_save_bad_frames:1);
434/*7*/ u8 X(X(X(X(X(rx_discard_short_frames:1, tx_underrun_retry:2),
435 pad7:2), rx_extended_rfd:1), tx_two_frames_in_fifo:1),
436 tx_dynamic_tbd:1);
437/*8*/ u8 X(X(mii_mode:1, pad8:6), csma_disabled:1);
438/*9*/ u8 X(X(X(X(X(rx_tcpudp_checksum:1, pad9:3), vlan_arp_tco:1),
439 link_status_wake:1), arp_wake:1), mcmatch_wake:1);
440/*10*/ u8 X(X(X(pad10:3, no_source_addr_insertion:1), preamble_length:2),
441 loopback:2);
442/*11*/ u8 X(linear_priority:3, pad11:5);
443/*12*/ u8 X(X(linear_priority_mode:1, pad12:3), ifs:4);
444/*13*/ u8 ip_addr_lo;
445/*14*/ u8 ip_addr_hi;
446/*15*/ u8 X(X(X(X(X(X(X(promiscuous_mode:1, broadcast_disabled:1),
447 wait_after_win:1), pad15_1:1), ignore_ul_bit:1), crc_16_bit:1),
448 pad15_2:1), crs_or_cdt:1);
449/*16*/ u8 fc_delay_lo;
450/*17*/ u8 fc_delay_hi;
451/*18*/ u8 X(X(X(X(X(rx_stripping:1, tx_padding:1), rx_crc_transfer:1),
452 rx_long_ok:1), fc_priority_threshold:3), pad18:1);
453/*19*/ u8 X(X(X(X(X(X(X(addr_wake:1, magic_packet_disable:1),
454 fc_disable:1), fc_restop:1), fc_restart:1), fc_reject:1),
455 full_duplex_force:1), full_duplex_pin:1);
456/*20*/ u8 X(X(X(pad20_1:5, fc_priority_location:1), multi_ia:1), pad20_2:1);
457/*21*/ u8 X(X(pad21_1:3, multicast_all:1), pad21_2:4);
458/*22*/ u8 X(X(rx_d102_mode:1, rx_vlan_drop:1), pad22:6);
459 u8 pad_d102[9];
460};
461
462#define E100_MAX_MULTICAST_ADDRS 64
463struct multi {
Al Viroaaf918b2007-12-10 18:32:49 +0000464 __le16 count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465 u8 addr[E100_MAX_MULTICAST_ADDRS * ETH_ALEN + 2/*pad*/];
466};
467
468/* Important: keep total struct u32-aligned */
469#define UCODE_SIZE 134
470struct cb {
Al Viroaaf918b2007-12-10 18:32:49 +0000471 __le16 status;
472 __le16 command;
473 __le32 link;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 union {
475 u8 iaaddr[ETH_ALEN];
Al Viroaaf918b2007-12-10 18:32:49 +0000476 __le32 ucode[UCODE_SIZE];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477 struct config config;
478 struct multi multi;
479 struct {
480 u32 tbd_array;
481 u16 tcb_byte_count;
482 u8 threshold;
483 u8 tbd_count;
484 struct {
Al Viroaaf918b2007-12-10 18:32:49 +0000485 __le32 buf_addr;
486 __le16 size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487 u16 eol;
488 } tbd;
489 } tcb;
Al Viroaaf918b2007-12-10 18:32:49 +0000490 __le32 dump_buffer_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491 } u;
492 struct cb *next, *prev;
493 dma_addr_t dma_addr;
494 struct sk_buff *skb;
495};
496
497enum loopback {
498 lb_none = 0, lb_mac = 1, lb_phy = 3,
499};
500
501struct stats {
Al Viroaaf918b2007-12-10 18:32:49 +0000502 __le32 tx_good_frames, tx_max_collisions, tx_late_collisions,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 tx_underruns, tx_lost_crs, tx_deferred, tx_single_collisions,
504 tx_multiple_collisions, tx_total_collisions;
Al Viroaaf918b2007-12-10 18:32:49 +0000505 __le32 rx_good_frames, rx_crc_errors, rx_alignment_errors,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506 rx_resource_errors, rx_overrun_errors, rx_cdt_errors,
507 rx_short_frame_errors;
Al Viroaaf918b2007-12-10 18:32:49 +0000508 __le32 fc_xmt_pause, fc_rcv_pause, fc_rcv_unsupported;
509 __le16 xmt_tco_frames, rcv_tco_frames;
510 __le32 complete;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511};
512
513struct mem {
514 struct {
515 u32 signature;
516 u32 result;
517 } selftest;
518 struct stats stats;
519 u8 dump_buf[596];
520};
521
522struct param_range {
523 u32 min;
524 u32 max;
525 u32 count;
526};
527
528struct params {
529 struct param_range rfds;
530 struct param_range cbs;
531};
532
533struct nic {
534 /* Begin: frequently used values: keep adjacent for cache effect */
535 u32 msg_enable ____cacheline_aligned;
536 struct net_device *netdev;
537 struct pci_dev *pdev;
538
539 struct rx *rxs ____cacheline_aligned;
540 struct rx *rx_to_use;
541 struct rx *rx_to_clean;
542 struct rfd blank_rfd;
Jeff Garzikca93ca42007-06-12 18:52:31 -0400543 enum ru_state ru_running;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544
545 spinlock_t cb_lock ____cacheline_aligned;
546 spinlock_t cmd_lock;
547 struct csr __iomem *csr;
548 enum scb_cmd_lo cuc_cmd;
549 unsigned int cbs_avail;
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700550 struct napi_struct napi;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551 struct cb *cbs;
552 struct cb *cb_to_use;
553 struct cb *cb_to_send;
554 struct cb *cb_to_clean;
Al Viroaaf918b2007-12-10 18:32:49 +0000555 __le16 tx_command;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556 /* End: frequently used values: keep adjacent for cache effect */
557
558 enum {
559 ich = (1 << 0),
560 promiscuous = (1 << 1),
561 multicast_all = (1 << 2),
562 wol_magic = (1 << 3),
563 ich_10h_workaround = (1 << 4),
564 } flags ____cacheline_aligned;
565
566 enum mac mac;
567 enum phy phy;
568 struct params params;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569 struct timer_list watchdog;
570 struct timer_list blink_timer;
571 struct mii_if_info mii;
Malli Chilakala2acdb1e2005-04-28 19:16:58 -0700572 struct work_struct tx_timeout_task;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573 enum loopback loopback;
574
575 struct mem *mem;
576 dma_addr_t dma_addr;
577
578 dma_addr_t cbs_dma_addr;
579 u8 adaptive_ifs;
580 u8 tx_threshold;
581 u32 tx_frames;
582 u32 tx_collisions;
583 u32 tx_deferred;
584 u32 tx_single_collisions;
585 u32 tx_multiple_collisions;
586 u32 tx_fc_pause;
587 u32 tx_tco_frames;
588
589 u32 rx_fc_pause;
590 u32 rx_fc_unsupported;
591 u32 rx_tco_frames;
592 u32 rx_over_length_errors;
593
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594 u16 leds;
595 u16 eeprom_wc;
Al Viroaaf918b2007-12-10 18:32:49 +0000596 __le16 eeprom[256];
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800597 spinlock_t mdio_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598};
599
600static inline void e100_write_flush(struct nic *nic)
601{
602 /* Flush previous PCI writes through intermediate bridges
603 * by doing a benign read */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700604 (void)ioread8(&nic->csr->scb.status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605}
606
Arjan van de Ven858119e2006-01-14 13:20:43 -0800607static void e100_enable_irq(struct nic *nic)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608{
609 unsigned long flags;
610
611 spin_lock_irqsave(&nic->cmd_lock, flags);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700612 iowrite8(irq_mask_none, &nic->csr->scb.cmd_hi);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613 e100_write_flush(nic);
Catalin(ux aka Dino) BOIEad8c48a2006-03-04 12:18:59 -0500614 spin_unlock_irqrestore(&nic->cmd_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615}
616
Arjan van de Ven858119e2006-01-14 13:20:43 -0800617static void e100_disable_irq(struct nic *nic)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618{
619 unsigned long flags;
620
621 spin_lock_irqsave(&nic->cmd_lock, flags);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700622 iowrite8(irq_mask_all, &nic->csr->scb.cmd_hi);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623 e100_write_flush(nic);
Catalin(ux aka Dino) BOIEad8c48a2006-03-04 12:18:59 -0500624 spin_unlock_irqrestore(&nic->cmd_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625}
626
627static void e100_hw_reset(struct nic *nic)
628{
629 /* Put CU and RU into idle with a selective reset to get
630 * device off of PCI bus */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700631 iowrite32(selective_reset, &nic->csr->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632 e100_write_flush(nic); udelay(20);
633
634 /* Now fully reset device */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700635 iowrite32(software_reset, &nic->csr->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636 e100_write_flush(nic); udelay(20);
637
638 /* Mask off our interrupt line - it's unmasked after reset */
639 e100_disable_irq(nic);
640}
641
642static int e100_self_test(struct nic *nic)
643{
644 u32 dma_addr = nic->dma_addr + offsetof(struct mem, selftest);
645
646 /* Passing the self-test is a pretty good indication
647 * that the device can DMA to/from host memory */
648
649 nic->mem->selftest.signature = 0;
650 nic->mem->selftest.result = 0xFFFFFFFF;
651
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700652 iowrite32(selftest | dma_addr, &nic->csr->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653 e100_write_flush(nic);
654 /* Wait 10 msec for self-test to complete */
655 msleep(10);
656
657 /* Interrupts are enabled after self-test */
658 e100_disable_irq(nic);
659
660 /* Check results of self-test */
661 if(nic->mem->selftest.result != 0) {
662 DPRINTK(HW, ERR, "Self-test failed: result=0x%08X\n",
663 nic->mem->selftest.result);
664 return -ETIMEDOUT;
665 }
666 if(nic->mem->selftest.signature == 0) {
667 DPRINTK(HW, ERR, "Self-test failed: timed out\n");
668 return -ETIMEDOUT;
669 }
670
671 return 0;
672}
673
Al Viroaaf918b2007-12-10 18:32:49 +0000674static void e100_eeprom_write(struct nic *nic, u16 addr_len, u16 addr, __le16 data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675{
676 u32 cmd_addr_data[3];
677 u8 ctrl;
678 int i, j;
679
680 /* Three cmds: write/erase enable, write data, write/erase disable */
681 cmd_addr_data[0] = op_ewen << (addr_len - 2);
682 cmd_addr_data[1] = (((op_write << addr_len) | addr) << 16) |
Al Viroaaf918b2007-12-10 18:32:49 +0000683 le16_to_cpu(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684 cmd_addr_data[2] = op_ewds << (addr_len - 2);
685
686 /* Bit-bang cmds to write word to eeprom */
687 for(j = 0; j < 3; j++) {
688
689 /* Chip select */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700690 iowrite8(eecs | eesk, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691 e100_write_flush(nic); udelay(4);
692
693 for(i = 31; i >= 0; i--) {
694 ctrl = (cmd_addr_data[j] & (1 << i)) ?
695 eecs | eedi : eecs;
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700696 iowrite8(ctrl, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697 e100_write_flush(nic); udelay(4);
698
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700699 iowrite8(ctrl | eesk, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700 e100_write_flush(nic); udelay(4);
701 }
702 /* Wait 10 msec for cmd to complete */
703 msleep(10);
704
705 /* Chip deselect */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700706 iowrite8(0, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707 e100_write_flush(nic); udelay(4);
708 }
709};
710
711/* General technique stolen from the eepro100 driver - very clever */
Al Viroaaf918b2007-12-10 18:32:49 +0000712static __le16 e100_eeprom_read(struct nic *nic, u16 *addr_len, u16 addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713{
714 u32 cmd_addr_data;
715 u16 data = 0;
716 u8 ctrl;
717 int i;
718
719 cmd_addr_data = ((op_read << *addr_len) | addr) << 16;
720
721 /* Chip select */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700722 iowrite8(eecs | eesk, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723 e100_write_flush(nic); udelay(4);
724
725 /* Bit-bang to read word from eeprom */
726 for(i = 31; i >= 0; i--) {
727 ctrl = (cmd_addr_data & (1 << i)) ? eecs | eedi : eecs;
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700728 iowrite8(ctrl, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729 e100_write_flush(nic); udelay(4);
Jesse Brandeburg05479932006-01-17 15:01:10 -0800730
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700731 iowrite8(ctrl | eesk, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732 e100_write_flush(nic); udelay(4);
Jesse Brandeburg05479932006-01-17 15:01:10 -0800733
Linus Torvalds1da177e2005-04-16 15:20:36 -0700734 /* Eeprom drives a dummy zero to EEDO after receiving
735 * complete address. Use this to adjust addr_len. */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700736 ctrl = ioread8(&nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737 if(!(ctrl & eedo) && i > 16) {
738 *addr_len -= (i - 16);
739 i = 17;
740 }
Jesse Brandeburg05479932006-01-17 15:01:10 -0800741
Linus Torvalds1da177e2005-04-16 15:20:36 -0700742 data = (data << 1) | (ctrl & eedo ? 1 : 0);
743 }
744
745 /* Chip deselect */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700746 iowrite8(0, &nic->csr->eeprom_ctrl_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 e100_write_flush(nic); udelay(4);
748
Al Viroaaf918b2007-12-10 18:32:49 +0000749 return cpu_to_le16(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700750};
751
752/* Load entire EEPROM image into driver cache and validate checksum */
753static int e100_eeprom_load(struct nic *nic)
754{
755 u16 addr, addr_len = 8, checksum = 0;
756
757 /* Try reading with an 8-bit addr len to discover actual addr len */
758 e100_eeprom_read(nic, &addr_len, 0);
759 nic->eeprom_wc = 1 << addr_len;
760
761 for(addr = 0; addr < nic->eeprom_wc; addr++) {
762 nic->eeprom[addr] = e100_eeprom_read(nic, &addr_len, addr);
763 if(addr < nic->eeprom_wc - 1)
Al Viroaaf918b2007-12-10 18:32:49 +0000764 checksum += le16_to_cpu(nic->eeprom[addr]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700765 }
766
767 /* The checksum, stored in the last word, is calculated such that
768 * the sum of words should be 0xBABA */
Al Viroaaf918b2007-12-10 18:32:49 +0000769 if (cpu_to_le16(0xBABA - checksum) != nic->eeprom[nic->eeprom_wc - 1]) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770 DPRINTK(PROBE, ERR, "EEPROM corrupted\n");
David S. Miller8fb6f732006-08-28 22:12:54 -0700771 if (!eeprom_bad_csum_allow)
772 return -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700773 }
774
775 return 0;
776}
777
778/* Save (portion of) driver EEPROM cache to device and update checksum */
779static int e100_eeprom_save(struct nic *nic, u16 start, u16 count)
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
787 if(start + count >= nic->eeprom_wc)
788 return -EINVAL;
789
790 for(addr = start; addr < start + count; addr++)
791 e100_eeprom_write(nic, addr_len, addr, nic->eeprom[addr]);
792
793 /* The checksum, stored in the last word, is calculated such that
794 * the sum of words should be 0xBABA */
795 for(addr = 0; addr < nic->eeprom_wc - 1; addr++)
Al Viroaaf918b2007-12-10 18:32:49 +0000796 checksum += le16_to_cpu(nic->eeprom[addr]);
797 nic->eeprom[nic->eeprom_wc - 1] = cpu_to_le16(0xBABA - checksum);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798 e100_eeprom_write(nic, addr_len, nic->eeprom_wc - 1,
799 nic->eeprom[nic->eeprom_wc - 1]);
800
801 return 0;
802}
803
Malli Chilakala962082b2005-04-28 19:19:46 -0700804#define E100_WAIT_SCB_TIMEOUT 20000 /* we might have to wait 100ms!!! */
Malli Chilakalae6280f22005-08-25 13:06:23 -0700805#define E100_WAIT_SCB_FAST 20 /* delay like the old code */
Arjan van de Ven858119e2006-01-14 13:20:43 -0800806static int e100_exec_cmd(struct nic *nic, u8 cmd, dma_addr_t dma_addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807{
808 unsigned long flags;
809 unsigned int i;
810 int err = 0;
811
812 spin_lock_irqsave(&nic->cmd_lock, flags);
813
814 /* Previous command is accepted when SCB clears */
815 for(i = 0; i < E100_WAIT_SCB_TIMEOUT; i++) {
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700816 if(likely(!ioread8(&nic->csr->scb.cmd_lo)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817 break;
818 cpu_relax();
Malli Chilakalae6280f22005-08-25 13:06:23 -0700819 if(unlikely(i > E100_WAIT_SCB_FAST))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 udelay(5);
821 }
822 if(unlikely(i == E100_WAIT_SCB_TIMEOUT)) {
823 err = -EAGAIN;
824 goto err_unlock;
825 }
826
827 if(unlikely(cmd != cuc_resume))
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700828 iowrite32(dma_addr, &nic->csr->scb.gen_ptr);
829 iowrite8(cmd, &nic->csr->scb.cmd_lo);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830
831err_unlock:
832 spin_unlock_irqrestore(&nic->cmd_lock, flags);
833
834 return err;
835}
836
Arjan van de Ven858119e2006-01-14 13:20:43 -0800837static int e100_exec_cb(struct nic *nic, struct sk_buff *skb,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838 void (*cb_prepare)(struct nic *, struct cb *, struct sk_buff *))
839{
840 struct cb *cb;
841 unsigned long flags;
842 int err = 0;
843
844 spin_lock_irqsave(&nic->cb_lock, flags);
845
846 if(unlikely(!nic->cbs_avail)) {
847 err = -ENOMEM;
848 goto err_unlock;
849 }
850
851 cb = nic->cb_to_use;
852 nic->cb_to_use = cb->next;
853 nic->cbs_avail--;
854 cb->skb = skb;
855
856 if(unlikely(!nic->cbs_avail))
857 err = -ENOSPC;
858
859 cb_prepare(nic, cb, skb);
860
861 /* Order is important otherwise we'll be in a race with h/w:
862 * set S-bit in current first, then clear S-bit in previous. */
863 cb->command |= cpu_to_le16(cb_s);
864 wmb();
865 cb->prev->command &= cpu_to_le16(~cb_s);
866
867 while(nic->cb_to_send != nic->cb_to_use) {
868 if(unlikely(e100_exec_cmd(nic, nic->cuc_cmd,
869 nic->cb_to_send->dma_addr))) {
870 /* Ok, here's where things get sticky. It's
871 * possible that we can't schedule the command
872 * because the controller is too busy, so
873 * let's just queue the command and try again
874 * when another command is scheduled. */
Malli Chilakala962082b2005-04-28 19:19:46 -0700875 if(err == -ENOSPC) {
876 //request a reset
877 schedule_work(&nic->tx_timeout_task);
878 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879 break;
880 } else {
881 nic->cuc_cmd = cuc_resume;
882 nic->cb_to_send = nic->cb_to_send->next;
883 }
884 }
885
886err_unlock:
887 spin_unlock_irqrestore(&nic->cb_lock, flags);
888
889 return err;
890}
891
892static u16 mdio_ctrl(struct nic *nic, u32 addr, u32 dir, u32 reg, u16 data)
893{
894 u32 data_out = 0;
895 unsigned int i;
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800896 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800898
899 /*
900 * Stratus87247: we shouldn't be writing the MDI control
901 * register until the Ready bit shows True. Also, since
902 * manipulation of the MDI control registers is a multi-step
903 * procedure it should be done under lock.
904 */
905 spin_lock_irqsave(&nic->mdio_lock, flags);
906 for (i = 100; i; --i) {
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700907 if (ioread32(&nic->csr->mdi_ctrl) & mdi_ready)
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800908 break;
909 udelay(20);
910 }
911 if (unlikely(!i)) {
912 printk("e100.mdio_ctrl(%s) won't go Ready\n",
913 nic->netdev->name );
914 spin_unlock_irqrestore(&nic->mdio_lock, flags);
915 return 0; /* No way to indicate timeout error */
916 }
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700917 iowrite32((reg << 16) | (addr << 21) | dir | data, &nic->csr->mdi_ctrl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700918
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800919 for (i = 0; i < 100; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920 udelay(20);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -0700921 if ((data_out = ioread32(&nic->csr->mdi_ctrl)) & mdi_ready)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922 break;
923 }
ODonnell, Michaelac7c6662006-01-11 11:26:22 -0800924 spin_unlock_irqrestore(&nic->mdio_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925 DPRINTK(HW, DEBUG,
926 "%s:addr=%d, reg=%d, data_in=0x%04X, data_out=0x%04X\n",
927 dir == mdi_read ? "READ" : "WRITE", addr, reg, data, data_out);
928 return (u16)data_out;
929}
930
931static int mdio_read(struct net_device *netdev, int addr, int reg)
932{
933 return mdio_ctrl(netdev_priv(netdev), addr, mdi_read, reg, 0);
934}
935
936static void mdio_write(struct net_device *netdev, int addr, int reg, int data)
937{
938 mdio_ctrl(netdev_priv(netdev), addr, mdi_write, reg, data);
939}
940
941static void e100_get_defaults(struct nic *nic)
942{
Jesse Brandeburg2afecc02005-11-14 13:15:49 -0800943 struct param_range rfds = { .min = 16, .max = 256, .count = 256 };
944 struct param_range cbs = { .min = 64, .max = 256, .count = 128 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700945
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946 /* MAC type is encoded as rev ID; exception: ICH is treated as 82559 */
Auke Kok44c10132007-06-08 15:46:36 -0700947 nic->mac = (nic->flags & ich) ? mac_82559_D101M : nic->pdev->revision;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700948 if(nic->mac == mac_unknown)
949 nic->mac = mac_82557_D100_A;
950
951 nic->params.rfds = rfds;
952 nic->params.cbs = cbs;
953
954 /* Quadwords to DMA into FIFO before starting frame transmit */
955 nic->tx_threshold = 0xE0;
956
Andreas Mohr0a0863a2008-02-01 08:21:39 -0800957 /* no interrupt for every tx completion, delay = 256us if not 557 */
Malli Chilakala962082b2005-04-28 19:19:46 -0700958 nic->tx_command = cpu_to_le16(cb_tx | cb_tx_sf |
959 ((nic->mac >= mac_82558_D101_A4) ? cb_cid : cb_i));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700960
961 /* Template for a freshly allocated RFD */
David Acker7734f6e2007-11-08 10:17:41 -0800962 nic->blank_rfd.command = 0;
Al Viro11728992008-03-16 22:21:44 +0000963 nic->blank_rfd.rbd = cpu_to_le32(0xFFFFFFFF);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700964 nic->blank_rfd.size = cpu_to_le16(VLAN_ETH_FRAME_LEN);
965
966 /* MII setup */
967 nic->mii.phy_id_mask = 0x1F;
968 nic->mii.reg_num_mask = 0x1F;
969 nic->mii.dev = nic->netdev;
970 nic->mii.mdio_read = mdio_read;
971 nic->mii.mdio_write = mdio_write;
972}
973
974static void e100_configure(struct nic *nic, struct cb *cb, struct sk_buff *skb)
975{
976 struct config *config = &cb->u.config;
977 u8 *c = (u8 *)config;
978
979 cb->command = cpu_to_le16(cb_config);
980
981 memset(config, 0, sizeof(struct config));
982
983 config->byte_count = 0x16; /* bytes in this struct */
984 config->rx_fifo_limit = 0x8; /* bytes in FIFO before DMA */
985 config->direct_rx_dma = 0x1; /* reserved */
986 config->standard_tcb = 0x1; /* 1=standard, 0=extended */
987 config->standard_stat_counter = 0x1; /* 1=standard, 0=extended */
988 config->rx_discard_short_frames = 0x1; /* 1=discard, 0=pass */
989 config->tx_underrun_retry = 0x3; /* # of underrun retries */
990 config->mii_mode = 0x1; /* 1=MII mode, 0=503 mode */
991 config->pad10 = 0x6;
992 config->no_source_addr_insertion = 0x1; /* 1=no, 0=yes */
993 config->preamble_length = 0x2; /* 0=1, 1=3, 2=7, 3=15 bytes */
994 config->ifs = 0x6; /* x16 = inter frame spacing */
995 config->ip_addr_hi = 0xF2; /* ARP IP filter - not used */
996 config->pad15_1 = 0x1;
997 config->pad15_2 = 0x1;
998 config->crs_or_cdt = 0x0; /* 0=CRS only, 1=CRS or CDT */
999 config->fc_delay_hi = 0x40; /* time delay for fc frame */
1000 config->tx_padding = 0x1; /* 1=pad short frames */
1001 config->fc_priority_threshold = 0x7; /* 7=priority fc disabled */
1002 config->pad18 = 0x1;
1003 config->full_duplex_pin = 0x1; /* 1=examine FDX# pin */
1004 config->pad20_1 = 0x1F;
1005 config->fc_priority_location = 0x1; /* 1=byte#31, 0=byte#19 */
1006 config->pad21_1 = 0x5;
1007
1008 config->adaptive_ifs = nic->adaptive_ifs;
1009 config->loopback = nic->loopback;
1010
1011 if(nic->mii.force_media && nic->mii.full_duplex)
1012 config->full_duplex_force = 0x1; /* 1=force, 0=auto */
1013
1014 if(nic->flags & promiscuous || nic->loopback) {
1015 config->rx_save_bad_frames = 0x1; /* 1=save, 0=discard */
1016 config->rx_discard_short_frames = 0x0; /* 1=discard, 0=save */
1017 config->promiscuous_mode = 0x1; /* 1=on, 0=off */
1018 }
1019
1020 if(nic->flags & multicast_all)
1021 config->multicast_all = 0x1; /* 1=accept, 0=no */
1022
Malli Chilakala6bdacb12005-04-28 19:17:54 -07001023 /* disable WoL when up */
1024 if(netif_running(nic->netdev) || !(nic->flags & wol_magic))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001025 config->magic_packet_disable = 0x1; /* 1=off, 0=on */
1026
1027 if(nic->mac >= mac_82558_D101_A4) {
1028 config->fc_disable = 0x1; /* 1=Tx fc off, 0=Tx fc on */
1029 config->mwi_enable = 0x1; /* 1=enable, 0=disable */
1030 config->standard_tcb = 0x0; /* 1=standard, 0=extended */
1031 config->rx_long_ok = 0x1; /* 1=VLANs ok, 0=standard */
David Graham44e49252007-07-10 08:45:11 -07001032 if (nic->mac >= mac_82559_D101M) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001033 config->tno_intr = 0x1; /* TCO stats enable */
David Graham44e49252007-07-10 08:45:11 -07001034 /* Enable TCO in extended config */
1035 if (nic->mac >= mac_82551_10) {
1036 config->byte_count = 0x20; /* extended bytes */
1037 config->rx_d102_mode = 0x1; /* GMRC for TCO */
1038 }
1039 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001040 config->standard_stat_counter = 0x0;
David Graham44e49252007-07-10 08:45:11 -07001041 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001042 }
1043
1044 DPRINTK(HW, DEBUG, "[00-07]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
1045 c[0], c[1], c[2], c[3], c[4], c[5], c[6], c[7]);
1046 DPRINTK(HW, DEBUG, "[08-15]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
1047 c[8], c[9], c[10], c[11], c[12], c[13], c[14], c[15]);
1048 DPRINTK(HW, DEBUG, "[16-23]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
1049 c[16], c[17], c[18], c[19], c[20], c[21], c[22], c[23]);
1050}
1051
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001052/********************************************************/
1053/* Micro code for 8086:1229 Rev 8 */
1054/********************************************************/
1055
1056/* Parameter values for the D101M B-step */
1057#define D101M_CPUSAVER_TIMER_DWORD 78
1058#define D101M_CPUSAVER_BUNDLE_DWORD 65
1059#define D101M_CPUSAVER_MIN_SIZE_DWORD 126
1060
1061#define D101M_B_RCVBUNDLE_UCODE \
1062{\
10630x00550215, 0xFFFF0437, 0xFFFFFFFF, 0x06A70789, 0xFFFFFFFF, 0x0558FFFF, \
10640x000C0001, 0x00101312, 0x000C0008, 0x00380216, \
10650x0010009C, 0x00204056, 0x002380CC, 0x00380056, \
10660x0010009C, 0x00244C0B, 0x00000800, 0x00124818, \
10670x00380438, 0x00000000, 0x00140000, 0x00380555, \
10680x00308000, 0x00100662, 0x00100561, 0x000E0408, \
10690x00134861, 0x000C0002, 0x00103093, 0x00308000, \
10700x00100624, 0x00100561, 0x000E0408, 0x00100861, \
10710x000C007E, 0x00222C21, 0x000C0002, 0x00103093, \
10720x00380C7A, 0x00080000, 0x00103090, 0x00380C7A, \
10730x00000000, 0x00000000, 0x00000000, 0x00000000, \
10740x0010009C, 0x00244C2D, 0x00010004, 0x00041000, \
10750x003A0437, 0x00044010, 0x0038078A, 0x00000000, \
10760x00100099, 0x00206C7A, 0x0010009C, 0x00244C48, \
10770x00130824, 0x000C0001, 0x00101213, 0x00260C75, \
10780x00041000, 0x00010004, 0x00130826, 0x000C0006, \
10790x002206A8, 0x0013C926, 0x00101313, 0x003806A8, \
10800x00000000, 0x00000000, 0x00000000, 0x00000000, \
10810x00000000, 0x00000000, 0x00000000, 0x00000000, \
10820x00080600, 0x00101B10, 0x00050004, 0x00100826, \
10830x00101210, 0x00380C34, 0x00000000, 0x00000000, \
10840x0021155B, 0x00100099, 0x00206559, 0x0010009C, \
10850x00244559, 0x00130836, 0x000C0000, 0x00220C62, \
10860x000C0001, 0x00101B13, 0x00229C0E, 0x00210C0E, \
10870x00226C0E, 0x00216C0E, 0x0022FC0E, 0x00215C0E, \
10880x00214C0E, 0x00380555, 0x00010004, 0x00041000, \
10890x00278C67, 0x00040800, 0x00018100, 0x003A0437, \
10900x00130826, 0x000C0001, 0x00220559, 0x00101313, \
10910x00380559, 0x00000000, 0x00000000, 0x00000000, \
10920x00000000, 0x00000000, 0x00000000, 0x00000000, \
10930x00000000, 0x00130831, 0x0010090B, 0x00124813, \
10940x000CFF80, 0x002606AB, 0x00041000, 0x00010004, \
10950x003806A8, 0x00000000, 0x00000000, 0x00000000, \
1096}
1097
1098/********************************************************/
1099/* Micro code for 8086:1229 Rev 9 */
1100/********************************************************/
1101
1102/* Parameter values for the D101S */
1103#define D101S_CPUSAVER_TIMER_DWORD 78
1104#define D101S_CPUSAVER_BUNDLE_DWORD 67
1105#define D101S_CPUSAVER_MIN_SIZE_DWORD 128
1106
1107#define D101S_RCVBUNDLE_UCODE \
1108{\
11090x00550242, 0xFFFF047E, 0xFFFFFFFF, 0x06FF0818, 0xFFFFFFFF, 0x05A6FFFF, \
11100x000C0001, 0x00101312, 0x000C0008, 0x00380243, \
11110x0010009C, 0x00204056, 0x002380D0, 0x00380056, \
11120x0010009C, 0x00244F8B, 0x00000800, 0x00124818, \
11130x0038047F, 0x00000000, 0x00140000, 0x003805A3, \
11140x00308000, 0x00100610, 0x00100561, 0x000E0408, \
11150x00134861, 0x000C0002, 0x00103093, 0x00308000, \
11160x00100624, 0x00100561, 0x000E0408, 0x00100861, \
11170x000C007E, 0x00222FA1, 0x000C0002, 0x00103093, \
11180x00380F90, 0x00080000, 0x00103090, 0x00380F90, \
11190x00000000, 0x00000000, 0x00000000, 0x00000000, \
11200x0010009C, 0x00244FAD, 0x00010004, 0x00041000, \
11210x003A047E, 0x00044010, 0x00380819, 0x00000000, \
11220x00100099, 0x00206FFD, 0x0010009A, 0x0020AFFD, \
11230x0010009C, 0x00244FC8, 0x00130824, 0x000C0001, \
11240x00101213, 0x00260FF7, 0x00041000, 0x00010004, \
11250x00130826, 0x000C0006, 0x00220700, 0x0013C926, \
11260x00101313, 0x00380700, 0x00000000, 0x00000000, \
11270x00000000, 0x00000000, 0x00000000, 0x00000000, \
11280x00080600, 0x00101B10, 0x00050004, 0x00100826, \
11290x00101210, 0x00380FB6, 0x00000000, 0x00000000, \
11300x002115A9, 0x00100099, 0x002065A7, 0x0010009A, \
11310x0020A5A7, 0x0010009C, 0x002445A7, 0x00130836, \
11320x000C0000, 0x00220FE4, 0x000C0001, 0x00101B13, \
11330x00229F8E, 0x00210F8E, 0x00226F8E, 0x00216F8E, \
11340x0022FF8E, 0x00215F8E, 0x00214F8E, 0x003805A3, \
11350x00010004, 0x00041000, 0x00278FE9, 0x00040800, \
11360x00018100, 0x003A047E, 0x00130826, 0x000C0001, \
11370x002205A7, 0x00101313, 0x003805A7, 0x00000000, \
11380x00000000, 0x00000000, 0x00000000, 0x00000000, \
11390x00000000, 0x00000000, 0x00000000, 0x00130831, \
11400x0010090B, 0x00124813, 0x000CFF80, 0x00260703, \
11410x00041000, 0x00010004, 0x00380700 \
1142}
1143
1144/********************************************************/
1145/* Micro code for the 8086:1229 Rev F/10 */
1146/********************************************************/
1147
1148/* Parameter values for the D102 E-step */
1149#define D102_E_CPUSAVER_TIMER_DWORD 42
1150#define D102_E_CPUSAVER_BUNDLE_DWORD 54
1151#define D102_E_CPUSAVER_MIN_SIZE_DWORD 46
1152
1153#define D102_E_RCVBUNDLE_UCODE \
1154{\
11550x007D028F, 0x0E4204F9, 0x14ED0C85, 0x14FA14E9, 0x0EF70E36, 0x1FFF1FFF, \
11560x00E014B9, 0x00000000, 0x00000000, 0x00000000, \
11570x00E014BD, 0x00000000, 0x00000000, 0x00000000, \
11580x00E014D5, 0x00000000, 0x00000000, 0x00000000, \
11590x00000000, 0x00000000, 0x00000000, 0x00000000, \
11600x00E014C1, 0x00000000, 0x00000000, 0x00000000, \
11610x00000000, 0x00000000, 0x00000000, 0x00000000, \
11620x00000000, 0x00000000, 0x00000000, 0x00000000, \
11630x00000000, 0x00000000, 0x00000000, 0x00000000, \
11640x00E014C8, 0x00000000, 0x00000000, 0x00000000, \
11650x00200600, 0x00E014EE, 0x00000000, 0x00000000, \
11660x0030FF80, 0x00940E46, 0x00038200, 0x00102000, \
11670x00E00E43, 0x00000000, 0x00000000, 0x00000000, \
11680x00300006, 0x00E014FB, 0x00000000, 0x00000000, \
11690x00000000, 0x00000000, 0x00000000, 0x00000000, \
11700x00000000, 0x00000000, 0x00000000, 0x00000000, \
11710x00000000, 0x00000000, 0x00000000, 0x00000000, \
11720x00906E41, 0x00800E3C, 0x00E00E39, 0x00000000, \
11730x00906EFD, 0x00900EFD, 0x00E00EF8, 0x00000000, \
11740x00000000, 0x00000000, 0x00000000, 0x00000000, \
11750x00000000, 0x00000000, 0x00000000, 0x00000000, \
11760x00000000, 0x00000000, 0x00000000, 0x00000000, \
11770x00000000, 0x00000000, 0x00000000, 0x00000000, \
11780x00000000, 0x00000000, 0x00000000, 0x00000000, \
11790x00000000, 0x00000000, 0x00000000, 0x00000000, \
11800x00000000, 0x00000000, 0x00000000, 0x00000000, \
11810x00000000, 0x00000000, 0x00000000, 0x00000000, \
11820x00000000, 0x00000000, 0x00000000, 0x00000000, \
11830x00000000, 0x00000000, 0x00000000, 0x00000000, \
11840x00000000, 0x00000000, 0x00000000, 0x00000000, \
11850x00000000, 0x00000000, 0x00000000, 0x00000000, \
11860x00000000, 0x00000000, 0x00000000, 0x00000000, \
11870x00000000, 0x00000000, 0x00000000, 0x00000000, \
1188}
1189
Jesse Brandeburg24180332006-01-17 15:01:06 -08001190static void e100_setup_ucode(struct nic *nic, struct cb *cb, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001191{
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001192/* *INDENT-OFF* */
1193 static struct {
1194 u32 ucode[UCODE_SIZE + 1];
1195 u8 mac;
1196 u8 timer_dword;
1197 u8 bundle_dword;
1198 u8 min_size_dword;
1199 } ucode_opts[] = {
1200 { D101M_B_RCVBUNDLE_UCODE,
1201 mac_82559_D101M,
1202 D101M_CPUSAVER_TIMER_DWORD,
1203 D101M_CPUSAVER_BUNDLE_DWORD,
1204 D101M_CPUSAVER_MIN_SIZE_DWORD },
1205 { D101S_RCVBUNDLE_UCODE,
1206 mac_82559_D101S,
1207 D101S_CPUSAVER_TIMER_DWORD,
1208 D101S_CPUSAVER_BUNDLE_DWORD,
1209 D101S_CPUSAVER_MIN_SIZE_DWORD },
1210 { D102_E_RCVBUNDLE_UCODE,
1211 mac_82551_F,
1212 D102_E_CPUSAVER_TIMER_DWORD,
1213 D102_E_CPUSAVER_BUNDLE_DWORD,
1214 D102_E_CPUSAVER_MIN_SIZE_DWORD },
1215 { D102_E_RCVBUNDLE_UCODE,
1216 mac_82551_10,
1217 D102_E_CPUSAVER_TIMER_DWORD,
1218 D102_E_CPUSAVER_BUNDLE_DWORD,
1219 D102_E_CPUSAVER_MIN_SIZE_DWORD },
1220 { {0}, 0, 0, 0, 0}
1221 }, *opts;
1222/* *INDENT-ON* */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001223
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001224/*************************************************************************
1225* CPUSaver parameters
1226*
1227* All CPUSaver parameters are 16-bit literals that are part of a
1228* "move immediate value" instruction. By changing the value of
1229* the literal in the instruction before the code is loaded, the
1230* driver can change the algorithm.
1231*
Matt LaPlante0779bf22006-11-30 05:24:39 +01001232* INTDELAY - This loads the dead-man timer with its initial value.
Jesse Brandeburg05479932006-01-17 15:01:10 -08001233* When this timer expires the interrupt is asserted, and the
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001234* timer is reset each time a new packet is received. (see
1235* BUNDLEMAX below to set the limit on number of chained packets)
1236* The current default is 0x600 or 1536. Experiments show that
1237* the value should probably stay within the 0x200 - 0x1000.
1238*
Jesse Brandeburg05479932006-01-17 15:01:10 -08001239* BUNDLEMAX -
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001240* This sets the maximum number of frames that will be bundled. In
1241* some situations, such as the TCP windowing algorithm, it may be
1242* better to limit the growth of the bundle size than let it go as
1243* high as it can, because that could cause too much added latency.
1244* The default is six, because this is the number of packets in the
1245* default TCP window size. A value of 1 would make CPUSaver indicate
1246* an interrupt for every frame received. If you do not want to put
1247* a limit on the bundle size, set this value to xFFFF.
1248*
Jesse Brandeburg05479932006-01-17 15:01:10 -08001249* BUNDLESMALL -
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001250* This contains a bit-mask describing the minimum size frame that
1251* will be bundled. The default masks the lower 7 bits, which means
1252* that any frame less than 128 bytes in length will not be bundled,
1253* but will instead immediately generate an interrupt. This does
1254* not affect the current bundle in any way. Any frame that is 128
1255* bytes or large will be bundled normally. This feature is meant
1256* to provide immediate indication of ACK frames in a TCP environment.
1257* Customers were seeing poor performance when a machine with CPUSaver
1258* enabled was sending but not receiving. The delay introduced when
1259* the ACKs were received was enough to reduce total throughput, because
1260* the sender would sit idle until the ACK was finally seen.
1261*
1262* The current default is 0xFF80, which masks out the lower 7 bits.
1263* This means that any frame which is x7F (127) bytes or smaller
Jesse Brandeburg05479932006-01-17 15:01:10 -08001264* will cause an immediate interrupt. Because this value must be a
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001265* bit mask, there are only a few valid values that can be used. To
1266* turn this feature off, the driver can write the value xFFFF to the
1267* lower word of this instruction (in the same way that the other
1268* parameters are used). Likewise, a value of 0xF800 (2047) would
1269* cause an interrupt to be generated for every frame, because all
1270* standard Ethernet frames are <= 2047 bytes in length.
1271*************************************************************************/
1272
Jesse Brandeburg05479932006-01-17 15:01:10 -08001273/* if you wish to disable the ucode functionality, while maintaining the
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001274 * workarounds it provides, set the following defines to:
1275 * BUNDLESMALL 0
1276 * BUNDLEMAX 1
1277 * INTDELAY 1
1278 */
1279#define BUNDLESMALL 1
1280#define BUNDLEMAX (u16)6
1281#define INTDELAY (u16)1536 /* 0x600 */
1282
1283 /* do not load u-code for ICH devices */
1284 if (nic->flags & ich)
1285 goto noloaducode;
1286
Auke Kok44c10132007-06-08 15:46:36 -07001287 /* Search for ucode match against h/w revision */
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001288 for (opts = ucode_opts; opts->mac; opts++) {
1289 int i;
1290 u32 *ucode = opts->ucode;
1291 if (nic->mac != opts->mac)
1292 continue;
1293
1294 /* Insert user-tunable settings */
1295 ucode[opts->timer_dword] &= 0xFFFF0000;
1296 ucode[opts->timer_dword] |= INTDELAY;
1297 ucode[opts->bundle_dword] &= 0xFFFF0000;
1298 ucode[opts->bundle_dword] |= BUNDLEMAX;
1299 ucode[opts->min_size_dword] &= 0xFFFF0000;
1300 ucode[opts->min_size_dword] |= (BUNDLESMALL) ? 0xFFFF : 0xFF80;
1301
1302 for (i = 0; i < UCODE_SIZE; i++)
Jeff Garzik875521d2005-10-11 01:38:35 -04001303 cb->u.ucode[i] = cpu_to_le32(ucode[i]);
Jesse Brandeburg24180332006-01-17 15:01:06 -08001304 cb->command = cpu_to_le16(cb_ucode | cb_el);
Jesse Brandeburg2afecc02005-11-14 13:15:49 -08001305 return;
1306 }
1307
1308noloaducode:
Jesse Brandeburg24180332006-01-17 15:01:06 -08001309 cb->command = cpu_to_le16(cb_nop | cb_el);
1310}
1311
1312static inline int e100_exec_cb_wait(struct nic *nic, struct sk_buff *skb,
1313 void (*cb_prepare)(struct nic *, struct cb *, struct sk_buff *))
1314{
1315 int err = 0, counter = 50;
1316 struct cb *cb = nic->cb_to_clean;
1317
1318 if ((err = e100_exec_cb(nic, NULL, e100_setup_ucode)))
1319 DPRINTK(PROBE,ERR, "ucode cmd failed with error %d\n", err);
Jesse Brandeburg05479932006-01-17 15:01:10 -08001320
Jesse Brandeburg24180332006-01-17 15:01:06 -08001321 /* must restart cuc */
1322 nic->cuc_cmd = cuc_start;
1323
1324 /* wait for completion */
1325 e100_write_flush(nic);
1326 udelay(10);
1327
1328 /* wait for possibly (ouch) 500ms */
1329 while (!(cb->status & cpu_to_le16(cb_complete))) {
1330 msleep(10);
1331 if (!--counter) break;
1332 }
Jesse Brandeburg05479932006-01-17 15:01:10 -08001333
Robert P. J. Day3a4fa0a2007-10-19 23:10:43 +02001334 /* ack any interrupts, something could have been set */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07001335 iowrite8(~0, &nic->csr->scb.stat_ack);
Jesse Brandeburg24180332006-01-17 15:01:06 -08001336
1337 /* if the command failed, or is not OK, notify and return */
1338 if (!counter || !(cb->status & cpu_to_le16(cb_ok))) {
1339 DPRINTK(PROBE,ERR, "ucode load failed\n");
1340 err = -EPERM;
1341 }
Jesse Brandeburg05479932006-01-17 15:01:10 -08001342
Jesse Brandeburg24180332006-01-17 15:01:06 -08001343 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344}
1345
1346static void e100_setup_iaaddr(struct nic *nic, struct cb *cb,
1347 struct sk_buff *skb)
1348{
1349 cb->command = cpu_to_le16(cb_iaaddr);
1350 memcpy(cb->u.iaaddr, nic->netdev->dev_addr, ETH_ALEN);
1351}
1352
1353static void e100_dump(struct nic *nic, struct cb *cb, struct sk_buff *skb)
1354{
1355 cb->command = cpu_to_le16(cb_dump);
1356 cb->u.dump_buffer_addr = cpu_to_le32(nic->dma_addr +
1357 offsetof(struct mem, dump_buf));
1358}
1359
1360#define NCONFIG_AUTO_SWITCH 0x0080
1361#define MII_NSC_CONG MII_RESV1
1362#define NSC_CONG_ENABLE 0x0100
1363#define NSC_CONG_TXREADY 0x0400
1364#define ADVERTISE_FC_SUPPORTED 0x0400
1365static int e100_phy_init(struct nic *nic)
1366{
1367 struct net_device *netdev = nic->netdev;
1368 u32 addr;
1369 u16 bmcr, stat, id_lo, id_hi, cong;
1370
1371 /* Discover phy addr by searching addrs in order {1,0,2,..., 31} */
1372 for(addr = 0; addr < 32; addr++) {
1373 nic->mii.phy_id = (addr == 0) ? 1 : (addr == 1) ? 0 : addr;
1374 bmcr = mdio_read(netdev, nic->mii.phy_id, MII_BMCR);
1375 stat = mdio_read(netdev, nic->mii.phy_id, MII_BMSR);
1376 stat = mdio_read(netdev, nic->mii.phy_id, MII_BMSR);
1377 if(!((bmcr == 0xFFFF) || ((stat == 0) && (bmcr == 0))))
1378 break;
1379 }
1380 DPRINTK(HW, DEBUG, "phy_addr = %d\n", nic->mii.phy_id);
1381 if(addr == 32)
1382 return -EAGAIN;
1383
1384 /* Selected the phy and isolate the rest */
1385 for(addr = 0; addr < 32; addr++) {
1386 if(addr != nic->mii.phy_id) {
1387 mdio_write(netdev, addr, MII_BMCR, BMCR_ISOLATE);
1388 } else {
1389 bmcr = mdio_read(netdev, addr, MII_BMCR);
1390 mdio_write(netdev, addr, MII_BMCR,
1391 bmcr & ~BMCR_ISOLATE);
1392 }
1393 }
1394
1395 /* Get phy ID */
1396 id_lo = mdio_read(netdev, nic->mii.phy_id, MII_PHYSID1);
1397 id_hi = mdio_read(netdev, nic->mii.phy_id, MII_PHYSID2);
1398 nic->phy = (u32)id_hi << 16 | (u32)id_lo;
1399 DPRINTK(HW, DEBUG, "phy ID = 0x%08X\n", nic->phy);
1400
1401 /* Handle National tx phys */
1402#define NCS_PHY_MODEL_MASK 0xFFF0FFFF
1403 if((nic->phy & NCS_PHY_MODEL_MASK) == phy_nsc_tx) {
1404 /* Disable congestion control */
1405 cong = mdio_read(netdev, nic->mii.phy_id, MII_NSC_CONG);
1406 cong |= NSC_CONG_TXREADY;
1407 cong &= ~NSC_CONG_ENABLE;
1408 mdio_write(netdev, nic->mii.phy_id, MII_NSC_CONG, cong);
1409 }
1410
Jesse Brandeburg05479932006-01-17 15:01:10 -08001411 if((nic->mac >= mac_82550_D102) || ((nic->flags & ich) &&
Jeff Kirsher60ffa472006-08-16 11:28:14 -07001412 (mdio_read(netdev, nic->mii.phy_id, MII_TPISTATUS) & 0x8000) &&
1413 !(nic->eeprom[eeprom_cnfg_mdix] & eeprom_mdix_enabled))) {
1414 /* enable/disable MDI/MDI-X auto-switching. */
1415 mdio_write(netdev, nic->mii.phy_id, MII_NCONFIG,
1416 nic->mii.force_media ? 0 : NCONFIG_AUTO_SWITCH);
Malli Chilakala64895142005-06-17 17:27:41 -07001417 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001418
1419 return 0;
1420}
1421
1422static int e100_hw_init(struct nic *nic)
1423{
1424 int err;
1425
1426 e100_hw_reset(nic);
1427
1428 DPRINTK(HW, ERR, "e100_hw_init\n");
1429 if(!in_interrupt() && (err = e100_self_test(nic)))
1430 return err;
1431
1432 if((err = e100_phy_init(nic)))
1433 return err;
1434 if((err = e100_exec_cmd(nic, cuc_load_base, 0)))
1435 return err;
1436 if((err = e100_exec_cmd(nic, ruc_load_base, 0)))
1437 return err;
Jesse Brandeburg24180332006-01-17 15:01:06 -08001438 if ((err = e100_exec_cb_wait(nic, NULL, e100_setup_ucode)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001439 return err;
1440 if((err = e100_exec_cb(nic, NULL, e100_configure)))
1441 return err;
1442 if((err = e100_exec_cb(nic, NULL, e100_setup_iaaddr)))
1443 return err;
1444 if((err = e100_exec_cmd(nic, cuc_dump_addr,
1445 nic->dma_addr + offsetof(struct mem, stats))))
1446 return err;
1447 if((err = e100_exec_cmd(nic, cuc_dump_reset, 0)))
1448 return err;
1449
1450 e100_disable_irq(nic);
1451
1452 return 0;
1453}
1454
1455static void e100_multi(struct nic *nic, struct cb *cb, struct sk_buff *skb)
1456{
1457 struct net_device *netdev = nic->netdev;
1458 struct dev_mc_list *list = netdev->mc_list;
1459 u16 i, count = min(netdev->mc_count, E100_MAX_MULTICAST_ADDRS);
1460
1461 cb->command = cpu_to_le16(cb_multi);
1462 cb->u.multi.count = cpu_to_le16(count * ETH_ALEN);
1463 for(i = 0; list && i < count; i++, list = list->next)
1464 memcpy(&cb->u.multi.addr[i*ETH_ALEN], &list->dmi_addr,
1465 ETH_ALEN);
1466}
1467
1468static void e100_set_multicast_list(struct net_device *netdev)
1469{
1470 struct nic *nic = netdev_priv(netdev);
1471
1472 DPRINTK(HW, DEBUG, "mc_count=%d, flags=0x%04X\n",
1473 netdev->mc_count, netdev->flags);
1474
1475 if(netdev->flags & IFF_PROMISC)
1476 nic->flags |= promiscuous;
1477 else
1478 nic->flags &= ~promiscuous;
1479
1480 if(netdev->flags & IFF_ALLMULTI ||
1481 netdev->mc_count > E100_MAX_MULTICAST_ADDRS)
1482 nic->flags |= multicast_all;
1483 else
1484 nic->flags &= ~multicast_all;
1485
1486 e100_exec_cb(nic, NULL, e100_configure);
1487 e100_exec_cb(nic, NULL, e100_multi);
1488}
1489
1490static void e100_update_stats(struct nic *nic)
1491{
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001492 struct net_device *dev = nic->netdev;
1493 struct net_device_stats *ns = &dev->stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001494 struct stats *s = &nic->mem->stats;
Al Viroaaf918b2007-12-10 18:32:49 +00001495 __le32 *complete = (nic->mac < mac_82558_D101_A4) ? &s->fc_xmt_pause :
1496 (nic->mac < mac_82559_D101M) ? (__le32 *)&s->xmt_tco_frames :
Linus Torvalds1da177e2005-04-16 15:20:36 -07001497 &s->complete;
1498
1499 /* Device's stats reporting may take several microseconds to
Andreas Mohr0a0863a2008-02-01 08:21:39 -08001500 * complete, so we're always waiting for results of the
Linus Torvalds1da177e2005-04-16 15:20:36 -07001501 * previous command. */
1502
Al Viroaaf918b2007-12-10 18:32:49 +00001503 if(*complete == cpu_to_le32(cuc_dump_reset_complete)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001504 *complete = 0;
1505 nic->tx_frames = le32_to_cpu(s->tx_good_frames);
1506 nic->tx_collisions = le32_to_cpu(s->tx_total_collisions);
1507 ns->tx_aborted_errors += le32_to_cpu(s->tx_max_collisions);
1508 ns->tx_window_errors += le32_to_cpu(s->tx_late_collisions);
1509 ns->tx_carrier_errors += le32_to_cpu(s->tx_lost_crs);
1510 ns->tx_fifo_errors += le32_to_cpu(s->tx_underruns);
1511 ns->collisions += nic->tx_collisions;
1512 ns->tx_errors += le32_to_cpu(s->tx_max_collisions) +
1513 le32_to_cpu(s->tx_lost_crs);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001514 ns->rx_length_errors += le32_to_cpu(s->rx_short_frame_errors) +
1515 nic->rx_over_length_errors;
1516 ns->rx_crc_errors += le32_to_cpu(s->rx_crc_errors);
1517 ns->rx_frame_errors += le32_to_cpu(s->rx_alignment_errors);
1518 ns->rx_over_errors += le32_to_cpu(s->rx_overrun_errors);
1519 ns->rx_fifo_errors += le32_to_cpu(s->rx_overrun_errors);
John W. Linvilleecf71302005-09-12 10:48:59 -04001520 ns->rx_missed_errors += le32_to_cpu(s->rx_resource_errors);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001521 ns->rx_errors += le32_to_cpu(s->rx_crc_errors) +
1522 le32_to_cpu(s->rx_alignment_errors) +
1523 le32_to_cpu(s->rx_short_frame_errors) +
1524 le32_to_cpu(s->rx_cdt_errors);
1525 nic->tx_deferred += le32_to_cpu(s->tx_deferred);
1526 nic->tx_single_collisions +=
1527 le32_to_cpu(s->tx_single_collisions);
1528 nic->tx_multiple_collisions +=
1529 le32_to_cpu(s->tx_multiple_collisions);
1530 if(nic->mac >= mac_82558_D101_A4) {
1531 nic->tx_fc_pause += le32_to_cpu(s->fc_xmt_pause);
1532 nic->rx_fc_pause += le32_to_cpu(s->fc_rcv_pause);
1533 nic->rx_fc_unsupported +=
1534 le32_to_cpu(s->fc_rcv_unsupported);
1535 if(nic->mac >= mac_82559_D101M) {
1536 nic->tx_tco_frames +=
1537 le16_to_cpu(s->xmt_tco_frames);
1538 nic->rx_tco_frames +=
1539 le16_to_cpu(s->rcv_tco_frames);
1540 }
1541 }
1542 }
1543
Jesse Brandeburg05479932006-01-17 15:01:10 -08001544
Malli Chilakala1f533672005-04-28 19:17:20 -07001545 if(e100_exec_cmd(nic, cuc_dump_reset, 0))
1546 DPRINTK(TX_ERR, DEBUG, "exec cuc_dump_reset failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001547}
1548
1549static void e100_adjust_adaptive_ifs(struct nic *nic, int speed, int duplex)
1550{
1551 /* Adjust inter-frame-spacing (IFS) between two transmits if
1552 * we're getting collisions on a half-duplex connection. */
1553
1554 if(duplex == DUPLEX_HALF) {
1555 u32 prev = nic->adaptive_ifs;
1556 u32 min_frames = (speed == SPEED_100) ? 1000 : 100;
1557
1558 if((nic->tx_frames / 32 < nic->tx_collisions) &&
1559 (nic->tx_frames > min_frames)) {
1560 if(nic->adaptive_ifs < 60)
1561 nic->adaptive_ifs += 5;
1562 } else if (nic->tx_frames < min_frames) {
1563 if(nic->adaptive_ifs >= 5)
1564 nic->adaptive_ifs -= 5;
1565 }
1566 if(nic->adaptive_ifs != prev)
1567 e100_exec_cb(nic, NULL, e100_configure);
1568 }
1569}
1570
1571static void e100_watchdog(unsigned long data)
1572{
1573 struct nic *nic = (struct nic *)data;
1574 struct ethtool_cmd cmd;
1575
1576 DPRINTK(TIMER, DEBUG, "right now = %ld\n", jiffies);
1577
1578 /* mii library handles link maintenance tasks */
1579
1580 mii_ethtool_gset(&nic->mii, &cmd);
1581
1582 if(mii_link_ok(&nic->mii) && !netif_carrier_ok(nic->netdev)) {
1583 DPRINTK(LINK, INFO, "link up, %sMbps, %s-duplex\n",
1584 cmd.speed == SPEED_100 ? "100" : "10",
1585 cmd.duplex == DUPLEX_FULL ? "full" : "half");
1586 } else if(!mii_link_ok(&nic->mii) && netif_carrier_ok(nic->netdev)) {
1587 DPRINTK(LINK, INFO, "link down\n");
1588 }
1589
1590 mii_check_link(&nic->mii);
1591
1592 /* Software generated interrupt to recover from (rare) Rx
Jesse Brandeburg05479932006-01-17 15:01:10 -08001593 * allocation failure.
1594 * Unfortunately have to use a spinlock to not re-enable interrupts
1595 * accidentally, due to hardware that shares a register between the
1596 * interrupt mask bit and the SW Interrupt generation bit */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001597 spin_lock_irq(&nic->cmd_lock);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07001598 iowrite8(ioread8(&nic->csr->scb.cmd_hi) | irq_sw_gen,&nic->csr->scb.cmd_hi);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001599 e100_write_flush(nic);
Catalin(ux aka Dino) BOIEad8c48a2006-03-04 12:18:59 -05001600 spin_unlock_irq(&nic->cmd_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001601
1602 e100_update_stats(nic);
1603 e100_adjust_adaptive_ifs(nic, cmd.speed, cmd.duplex);
1604
1605 if(nic->mac <= mac_82557_D100_C)
1606 /* Issue a multicast command to workaround a 557 lock up */
1607 e100_set_multicast_list(nic->netdev);
1608
1609 if(nic->flags & ich && cmd.speed==SPEED_10 && cmd.duplex==DUPLEX_HALF)
1610 /* Need SW workaround for ICH[x] 10Mbps/half duplex Tx hang. */
1611 nic->flags |= ich_10h_workaround;
1612 else
1613 nic->flags &= ~ich_10h_workaround;
1614
Stephen Hemminger34c64172007-09-06 11:51:37 -07001615 mod_timer(&nic->watchdog,
1616 round_jiffies(jiffies + E100_WATCHDOG_PERIOD));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001617}
1618
Arjan van de Ven858119e2006-01-14 13:20:43 -08001619static void e100_xmit_prepare(struct nic *nic, struct cb *cb,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001620 struct sk_buff *skb)
1621{
1622 cb->command = nic->tx_command;
Malli Chilakala962082b2005-04-28 19:19:46 -07001623 /* interrupt every 16 packets regardless of delay */
Malli Chilakala996ec352005-08-25 13:06:08 -07001624 if((nic->cbs_avail & ~15) == nic->cbs_avail)
1625 cb->command |= cpu_to_le16(cb_i);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001626 cb->u.tcb.tbd_array = cb->dma_addr + offsetof(struct cb, u.tcb.tbd);
1627 cb->u.tcb.tcb_byte_count = 0;
1628 cb->u.tcb.threshold = nic->tx_threshold;
1629 cb->u.tcb.tbd_count = 1;
1630 cb->u.tcb.tbd.buf_addr = cpu_to_le32(pci_map_single(nic->pdev,
1631 skb->data, skb->len, PCI_DMA_TODEVICE));
Malli Chilakala611494d2005-08-25 13:06:52 -07001632 /* check for mapping failure? */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001633 cb->u.tcb.tbd.size = cpu_to_le16(skb->len);
1634}
1635
1636static int e100_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1637{
1638 struct nic *nic = netdev_priv(netdev);
1639 int err;
1640
1641 if(nic->flags & ich_10h_workaround) {
1642 /* SW workaround for ICH[x] 10Mbps/half duplex Tx hang.
1643 Issue a NOP command followed by a 1us delay before
1644 issuing the Tx command. */
Malli Chilakala1f533672005-04-28 19:17:20 -07001645 if(e100_exec_cmd(nic, cuc_nop, 0))
1646 DPRINTK(TX_ERR, DEBUG, "exec cuc_nop failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001647 udelay(1);
1648 }
1649
1650 err = e100_exec_cb(nic, skb, e100_xmit_prepare);
1651
1652 switch(err) {
1653 case -ENOSPC:
1654 /* We queued the skb, but now we're out of space. */
1655 DPRINTK(TX_ERR, DEBUG, "No space for CB\n");
1656 netif_stop_queue(netdev);
1657 break;
1658 case -ENOMEM:
1659 /* This is a hard error - log it. */
1660 DPRINTK(TX_ERR, DEBUG, "Out of Tx resources, returning skb\n");
1661 netif_stop_queue(netdev);
1662 return 1;
1663 }
1664
1665 netdev->trans_start = jiffies;
1666 return 0;
1667}
1668
Arjan van de Ven858119e2006-01-14 13:20:43 -08001669static int e100_tx_clean(struct nic *nic)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001670{
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001671 struct net_device *dev = nic->netdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001672 struct cb *cb;
1673 int tx_cleaned = 0;
1674
1675 spin_lock(&nic->cb_lock);
1676
Linus Torvalds1da177e2005-04-16 15:20:36 -07001677 /* Clean CBs marked complete */
1678 for(cb = nic->cb_to_clean;
1679 cb->status & cpu_to_le16(cb_complete);
1680 cb = nic->cb_to_clean = cb->next) {
Jesse Brandeburgdc450102006-09-27 12:53:22 -07001681 DPRINTK(TX_DONE, DEBUG, "cb[%d]->status = 0x%04X\n",
1682 (int)(((void*)cb - (void*)nic->cbs)/sizeof(struct cb)),
1683 cb->status);
1684
Linus Torvalds1da177e2005-04-16 15:20:36 -07001685 if(likely(cb->skb != NULL)) {
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001686 dev->stats.tx_packets++;
1687 dev->stats.tx_bytes += cb->skb->len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001688
1689 pci_unmap_single(nic->pdev,
1690 le32_to_cpu(cb->u.tcb.tbd.buf_addr),
1691 le16_to_cpu(cb->u.tcb.tbd.size),
1692 PCI_DMA_TODEVICE);
1693 dev_kfree_skb_any(cb->skb);
1694 cb->skb = NULL;
1695 tx_cleaned = 1;
1696 }
1697 cb->status = 0;
1698 nic->cbs_avail++;
1699 }
1700
1701 spin_unlock(&nic->cb_lock);
1702
1703 /* Recover from running out of Tx resources in xmit_frame */
1704 if(unlikely(tx_cleaned && netif_queue_stopped(nic->netdev)))
1705 netif_wake_queue(nic->netdev);
1706
1707 return tx_cleaned;
1708}
1709
1710static void e100_clean_cbs(struct nic *nic)
1711{
1712 if(nic->cbs) {
1713 while(nic->cbs_avail != nic->params.cbs.count) {
1714 struct cb *cb = nic->cb_to_clean;
1715 if(cb->skb) {
1716 pci_unmap_single(nic->pdev,
1717 le32_to_cpu(cb->u.tcb.tbd.buf_addr),
1718 le16_to_cpu(cb->u.tcb.tbd.size),
1719 PCI_DMA_TODEVICE);
1720 dev_kfree_skb(cb->skb);
1721 }
1722 nic->cb_to_clean = nic->cb_to_clean->next;
1723 nic->cbs_avail++;
1724 }
1725 pci_free_consistent(nic->pdev,
1726 sizeof(struct cb) * nic->params.cbs.count,
1727 nic->cbs, nic->cbs_dma_addr);
1728 nic->cbs = NULL;
1729 nic->cbs_avail = 0;
1730 }
1731 nic->cuc_cmd = cuc_start;
1732 nic->cb_to_use = nic->cb_to_send = nic->cb_to_clean =
1733 nic->cbs;
1734}
1735
1736static int e100_alloc_cbs(struct nic *nic)
1737{
1738 struct cb *cb;
1739 unsigned int i, count = nic->params.cbs.count;
1740
1741 nic->cuc_cmd = cuc_start;
1742 nic->cb_to_use = nic->cb_to_send = nic->cb_to_clean = NULL;
1743 nic->cbs_avail = 0;
1744
1745 nic->cbs = pci_alloc_consistent(nic->pdev,
1746 sizeof(struct cb) * count, &nic->cbs_dma_addr);
1747 if(!nic->cbs)
1748 return -ENOMEM;
1749
1750 for(cb = nic->cbs, i = 0; i < count; cb++, i++) {
1751 cb->next = (i + 1 < count) ? cb + 1 : nic->cbs;
1752 cb->prev = (i == 0) ? nic->cbs + count - 1 : cb - 1;
1753
1754 cb->dma_addr = nic->cbs_dma_addr + i * sizeof(struct cb);
1755 cb->link = cpu_to_le32(nic->cbs_dma_addr +
1756 ((i+1) % count) * sizeof(struct cb));
1757 cb->skb = NULL;
1758 }
1759
1760 nic->cb_to_use = nic->cb_to_send = nic->cb_to_clean = nic->cbs;
1761 nic->cbs_avail = count;
1762
1763 return 0;
1764}
1765
Jeff Garzikca93ca42007-06-12 18:52:31 -04001766static inline void e100_start_receiver(struct nic *nic, struct rx *rx)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001767{
Jeff Garzikca93ca42007-06-12 18:52:31 -04001768 if(!nic->rxs) return;
1769 if(RU_SUSPENDED != nic->ru_running) return;
1770
1771 /* handle init time starts */
1772 if(!rx) rx = nic->rxs;
1773
1774 /* (Re)start RU if suspended or idle and RFA is non-NULL */
1775 if(rx->skb) {
1776 e100_exec_cmd(nic, ruc_start, rx->dma_addr);
1777 nic->ru_running = RU_RUNNING;
1778 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001779}
1780
1781#define RFD_BUF_LEN (sizeof(struct rfd) + VLAN_ETH_FRAME_LEN)
Arjan van de Ven858119e2006-01-14 13:20:43 -08001782static int e100_rx_alloc_skb(struct nic *nic, struct rx *rx)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001783{
Auke Kok41875922006-08-31 14:27:48 -07001784 if(!(rx->skb = netdev_alloc_skb(nic->netdev, RFD_BUF_LEN + NET_IP_ALIGN)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001785 return -ENOMEM;
1786
1787 /* Align, init, and map the RFD. */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001788 skb_reserve(rx->skb, NET_IP_ALIGN);
Arnaldo Carvalho de Melo27d7ff42007-03-31 11:55:19 -03001789 skb_copy_to_linear_data(rx->skb, &nic->blank_rfd, sizeof(struct rfd));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001790 rx->dma_addr = pci_map_single(nic->pdev, rx->skb->data,
1791 RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
1792
FUJITA Tomonori8d8bb392008-07-25 19:44:49 -07001793 if (pci_dma_mapping_error(nic->pdev, rx->dma_addr)) {
Malli Chilakala1f533672005-04-28 19:17:20 -07001794 dev_kfree_skb_any(rx->skb);
Luiz Fernando Capitulino097688e2005-11-07 18:14:12 -02001795 rx->skb = NULL;
Malli Chilakala1f533672005-04-28 19:17:20 -07001796 rx->dma_addr = 0;
1797 return -ENOMEM;
1798 }
1799
Linus Torvalds1da177e2005-04-16 15:20:36 -07001800 /* Link the RFD to end of RFA by linking previous RFD to
David Acker7734f6e2007-11-08 10:17:41 -08001801 * this one. We are safe to touch the previous RFD because
1802 * it is protected by the before last buffer's el bit being set */
Al Viroaaf918b2007-12-10 18:32:49 +00001803 if (rx->prev->skb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001804 struct rfd *prev_rfd = (struct rfd *)rx->prev->skb->data;
Harvey Harrison6caf52a42008-04-29 01:03:36 -07001805 put_unaligned_le32(rx->dma_addr, &prev_rfd->link);
Kevin Hao19238152008-06-21 18:20:35 +08001806 pci_dma_sync_single_for_device(nic->pdev, rx->prev->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00001807 sizeof(struct rfd), PCI_DMA_BIDIRECTIONAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001808 }
1809
1810 return 0;
1811}
1812
Arjan van de Ven858119e2006-01-14 13:20:43 -08001813static int e100_rx_indicate(struct nic *nic, struct rx *rx,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001814 unsigned int *work_done, unsigned int work_to_do)
1815{
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001816 struct net_device *dev = nic->netdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001817 struct sk_buff *skb = rx->skb;
1818 struct rfd *rfd = (struct rfd *)skb->data;
1819 u16 rfd_status, actual_size;
1820
1821 if(unlikely(work_done && *work_done >= work_to_do))
1822 return -EAGAIN;
1823
1824 /* Need to sync before taking a peek at cb_complete bit */
1825 pci_dma_sync_single_for_cpu(nic->pdev, rx->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00001826 sizeof(struct rfd), PCI_DMA_BIDIRECTIONAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001827 rfd_status = le16_to_cpu(rfd->status);
1828
1829 DPRINTK(RX_STATUS, DEBUG, "status=0x%04X\n", rfd_status);
1830
1831 /* If data isn't ready, nothing to indicate */
David Acker7734f6e2007-11-08 10:17:41 -08001832 if (unlikely(!(rfd_status & cb_complete))) {
1833 /* If the next buffer has the el bit, but we think the receiver
1834 * is still running, check to see if it really stopped while
1835 * we had interrupts off.
1836 * This allows for a fast restart without re-enabling
1837 * interrupts */
1838 if ((le16_to_cpu(rfd->command) & cb_el) &&
1839 (RU_RUNNING == nic->ru_running))
1840
Jiri Slaby17393dd2008-08-14 18:27:23 +02001841 if (ioread8(&nic->csr->scb.status) & rus_no_res)
David Acker7734f6e2007-11-08 10:17:41 -08001842 nic->ru_running = RU_SUSPENDED;
Malli Chilakala1f533672005-04-28 19:17:20 -07001843 return -ENODATA;
David Acker7734f6e2007-11-08 10:17:41 -08001844 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001845
1846 /* Get actual data size */
1847 actual_size = le16_to_cpu(rfd->actual_size) & 0x3FFF;
1848 if(unlikely(actual_size > RFD_BUF_LEN - sizeof(struct rfd)))
1849 actual_size = RFD_BUF_LEN - sizeof(struct rfd);
1850
1851 /* Get data */
1852 pci_unmap_single(nic->pdev, rx->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00001853 RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001854
David Acker7734f6e2007-11-08 10:17:41 -08001855 /* If this buffer has the el bit, but we think the receiver
1856 * is still running, check to see if it really stopped while
1857 * we had interrupts off.
1858 * This allows for a fast restart without re-enabling interrupts.
1859 * This can happen when the RU sees the size change but also sees
1860 * the el bit set. */
1861 if ((le16_to_cpu(rfd->command) & cb_el) &&
1862 (RU_RUNNING == nic->ru_running)) {
1863
Jiri Slaby17393dd2008-08-14 18:27:23 +02001864 if (ioread8(&nic->csr->scb.status) & rus_no_res)
Jeff Garzikca93ca42007-06-12 18:52:31 -04001865 nic->ru_running = RU_SUSPENDED;
David Acker7734f6e2007-11-08 10:17:41 -08001866 }
Jeff Garzikca93ca42007-06-12 18:52:31 -04001867
Linus Torvalds1da177e2005-04-16 15:20:36 -07001868 /* Pull off the RFD and put the actual data (minus eth hdr) */
1869 skb_reserve(skb, sizeof(struct rfd));
1870 skb_put(skb, actual_size);
1871 skb->protocol = eth_type_trans(skb, nic->netdev);
1872
1873 if(unlikely(!(rfd_status & cb_ok))) {
1874 /* Don't indicate if hardware indicates errors */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001875 dev_kfree_skb_any(skb);
Malli Chilakala136df522005-08-25 13:05:41 -07001876 } else if(actual_size > ETH_DATA_LEN + VLAN_ETH_HLEN) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001877 /* Don't indicate oversized frames */
1878 nic->rx_over_length_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001879 dev_kfree_skb_any(skb);
1880 } else {
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001881 dev->stats.rx_packets++;
1882 dev->stats.rx_bytes += actual_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001883 nic->netdev->last_rx = jiffies;
1884 netif_receive_skb(skb);
1885 if(work_done)
1886 (*work_done)++;
1887 }
1888
1889 rx->skb = NULL;
1890
1891 return 0;
1892}
1893
Arjan van de Ven858119e2006-01-14 13:20:43 -08001894static void e100_rx_clean(struct nic *nic, unsigned int *work_done,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001895 unsigned int work_to_do)
1896{
1897 struct rx *rx;
David Acker7734f6e2007-11-08 10:17:41 -08001898 int restart_required = 0, err = 0;
1899 struct rx *old_before_last_rx, *new_before_last_rx;
1900 struct rfd *old_before_last_rfd, *new_before_last_rfd;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001901
1902 /* Indicate newly arrived packets */
1903 for(rx = nic->rx_to_clean; rx->skb; rx = nic->rx_to_clean = rx->next) {
David Acker7734f6e2007-11-08 10:17:41 -08001904 err = e100_rx_indicate(nic, rx, work_done, work_to_do);
1905 /* Hit quota or no more to clean */
1906 if (-EAGAIN == err || -ENODATA == err)
Jeff Garzikca93ca42007-06-12 18:52:31 -04001907 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001908 }
1909
David Acker7734f6e2007-11-08 10:17:41 -08001910
1911 /* On EAGAIN, hit quota so have more work to do, restart once
1912 * cleanup is complete.
1913 * Else, are we already rnr? then pay attention!!! this ensures that
1914 * the state machine progression never allows a start with a
1915 * partially cleaned list, avoiding a race between hardware
1916 * and rx_to_clean when in NAPI mode */
1917 if (-EAGAIN != err && RU_SUSPENDED == nic->ru_running)
1918 restart_required = 1;
1919
1920 old_before_last_rx = nic->rx_to_use->prev->prev;
1921 old_before_last_rfd = (struct rfd *)old_before_last_rx->skb->data;
Jeff Garzikca93ca42007-06-12 18:52:31 -04001922
Linus Torvalds1da177e2005-04-16 15:20:36 -07001923 /* Alloc new skbs to refill list */
1924 for(rx = nic->rx_to_use; !rx->skb; rx = nic->rx_to_use = rx->next) {
1925 if(unlikely(e100_rx_alloc_skb(nic, rx)))
1926 break; /* Better luck next time (see watchdog) */
1927 }
Jeff Garzikca93ca42007-06-12 18:52:31 -04001928
David Acker7734f6e2007-11-08 10:17:41 -08001929 new_before_last_rx = nic->rx_to_use->prev->prev;
1930 if (new_before_last_rx != old_before_last_rx) {
1931 /* Set the el-bit on the buffer that is before the last buffer.
1932 * This lets us update the next pointer on the last buffer
1933 * without worrying about hardware touching it.
1934 * We set the size to 0 to prevent hardware from touching this
1935 * buffer.
1936 * When the hardware hits the before last buffer with el-bit
1937 * and size of 0, it will RNR interrupt, the RUS will go into
1938 * the No Resources state. It will not complete nor write to
1939 * this buffer. */
1940 new_before_last_rfd =
1941 (struct rfd *)new_before_last_rx->skb->data;
1942 new_before_last_rfd->size = 0;
1943 new_before_last_rfd->command |= cpu_to_le16(cb_el);
1944 pci_dma_sync_single_for_device(nic->pdev,
1945 new_before_last_rx->dma_addr, sizeof(struct rfd),
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00001946 PCI_DMA_BIDIRECTIONAL);
David Acker7734f6e2007-11-08 10:17:41 -08001947
1948 /* Now that we have a new stopping point, we can clear the old
1949 * stopping point. We must sync twice to get the proper
1950 * ordering on the hardware side of things. */
1951 old_before_last_rfd->command &= ~cpu_to_le16(cb_el);
1952 pci_dma_sync_single_for_device(nic->pdev,
1953 old_before_last_rx->dma_addr, sizeof(struct rfd),
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00001954 PCI_DMA_BIDIRECTIONAL);
David Acker7734f6e2007-11-08 10:17:41 -08001955 old_before_last_rfd->size = cpu_to_le16(VLAN_ETH_FRAME_LEN);
1956 pci_dma_sync_single_for_device(nic->pdev,
1957 old_before_last_rx->dma_addr, sizeof(struct rfd),
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00001958 PCI_DMA_BIDIRECTIONAL);
David Acker7734f6e2007-11-08 10:17:41 -08001959 }
1960
Jeff Garzikca93ca42007-06-12 18:52:31 -04001961 if(restart_required) {
1962 // ack the rnr?
Jiri Slaby915e91d2008-01-29 22:49:16 +01001963 iowrite8(stat_ack_rnr, &nic->csr->scb.stat_ack);
David Acker7734f6e2007-11-08 10:17:41 -08001964 e100_start_receiver(nic, nic->rx_to_clean);
Jeff Garzikca93ca42007-06-12 18:52:31 -04001965 if(work_done)
1966 (*work_done)++;
1967 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001968}
1969
1970static void e100_rx_clean_list(struct nic *nic)
1971{
1972 struct rx *rx;
1973 unsigned int i, count = nic->params.rfds.count;
1974
Jeff Garzikca93ca42007-06-12 18:52:31 -04001975 nic->ru_running = RU_UNINITIALIZED;
1976
Linus Torvalds1da177e2005-04-16 15:20:36 -07001977 if(nic->rxs) {
1978 for(rx = nic->rxs, i = 0; i < count; rx++, i++) {
1979 if(rx->skb) {
1980 pci_unmap_single(nic->pdev, rx->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00001981 RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001982 dev_kfree_skb(rx->skb);
1983 }
1984 }
1985 kfree(nic->rxs);
1986 nic->rxs = NULL;
1987 }
1988
1989 nic->rx_to_use = nic->rx_to_clean = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001990}
1991
1992static int e100_rx_alloc_list(struct nic *nic)
1993{
1994 struct rx *rx;
1995 unsigned int i, count = nic->params.rfds.count;
David Acker7734f6e2007-11-08 10:17:41 -08001996 struct rfd *before_last;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001997
1998 nic->rx_to_use = nic->rx_to_clean = NULL;
Jeff Garzikca93ca42007-06-12 18:52:31 -04001999 nic->ru_running = RU_UNINITIALIZED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002000
Yan Burmanc48e3fc2006-12-12 20:03:10 +01002001 if(!(nic->rxs = kcalloc(count, sizeof(struct rx), GFP_ATOMIC)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002002 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002003
2004 for(rx = nic->rxs, i = 0; i < count; rx++, i++) {
2005 rx->next = (i + 1 < count) ? rx + 1 : nic->rxs;
2006 rx->prev = (i == 0) ? nic->rxs + count - 1 : rx - 1;
2007 if(e100_rx_alloc_skb(nic, rx)) {
2008 e100_rx_clean_list(nic);
2009 return -ENOMEM;
2010 }
2011 }
David Acker7734f6e2007-11-08 10:17:41 -08002012 /* Set the el-bit on the buffer that is before the last buffer.
2013 * This lets us update the next pointer on the last buffer without
2014 * worrying about hardware touching it.
2015 * We set the size to 0 to prevent hardware from touching this buffer.
2016 * When the hardware hits the before last buffer with el-bit and size
2017 * of 0, it will RNR interrupt, the RU will go into the No Resources
2018 * state. It will not complete nor write to this buffer. */
2019 rx = nic->rxs->prev->prev;
2020 before_last = (struct rfd *)rx->skb->data;
2021 before_last->command |= cpu_to_le16(cb_el);
2022 before_last->size = 0;
2023 pci_dma_sync_single_for_device(nic->pdev, rx->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00002024 sizeof(struct rfd), PCI_DMA_BIDIRECTIONAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002025
2026 nic->rx_to_use = nic->rx_to_clean = nic->rxs;
Jeff Garzikca93ca42007-06-12 18:52:31 -04002027 nic->ru_running = RU_SUSPENDED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002028
2029 return 0;
2030}
2031
David Howells7d12e782006-10-05 14:55:46 +01002032static irqreturn_t e100_intr(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002033{
2034 struct net_device *netdev = dev_id;
2035 struct nic *nic = netdev_priv(netdev);
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002036 u8 stat_ack = ioread8(&nic->csr->scb.stat_ack);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002037
2038 DPRINTK(INTR, DEBUG, "stat_ack = 0x%02X\n", stat_ack);
2039
2040 if(stat_ack == stat_ack_not_ours || /* Not our interrupt */
2041 stat_ack == stat_ack_not_present) /* Hardware is ejected */
2042 return IRQ_NONE;
2043
2044 /* Ack interrupt(s) */
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002045 iowrite8(stat_ack, &nic->csr->scb.stat_ack);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002046
Jeff Garzikca93ca42007-06-12 18:52:31 -04002047 /* We hit Receive No Resource (RNR); restart RU after cleaning */
2048 if(stat_ack & stat_ack_rnr)
2049 nic->ru_running = RU_SUSPENDED;
2050
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002051 if(likely(netif_rx_schedule_prep(netdev, &nic->napi))) {
Malli Chilakala0685c312005-06-17 17:31:44 -07002052 e100_disable_irq(nic);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002053 __netif_rx_schedule(netdev, &nic->napi);
Malli Chilakala0685c312005-06-17 17:31:44 -07002054 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002055
2056 return IRQ_HANDLED;
2057}
2058
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002059static int e100_poll(struct napi_struct *napi, int budget)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002060{
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002061 struct nic *nic = container_of(napi, struct nic, napi);
2062 struct net_device *netdev = nic->netdev;
Stephen Hemmingerddfce6b2007-10-05 17:19:47 -07002063 unsigned int work_done = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002064
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002065 e100_rx_clean(nic, &work_done, budget);
David S. Miller53e52c72008-01-07 21:06:12 -08002066 e100_tx_clean(nic);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002067
David S. Miller53e52c72008-01-07 21:06:12 -08002068 /* If budget not fully consumed, exit the polling mode */
2069 if (work_done < budget) {
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002070 netif_rx_complete(netdev, napi);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002071 e100_enable_irq(nic);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002072 }
2073
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002074 return work_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002075}
2076
2077#ifdef CONFIG_NET_POLL_CONTROLLER
2078static void e100_netpoll(struct net_device *netdev)
2079{
2080 struct nic *nic = netdev_priv(netdev);
Malli Chilakala611494d2005-08-25 13:06:52 -07002081
Linus Torvalds1da177e2005-04-16 15:20:36 -07002082 e100_disable_irq(nic);
David Howells7d12e782006-10-05 14:55:46 +01002083 e100_intr(nic->pdev->irq, netdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002084 e100_tx_clean(nic);
2085 e100_enable_irq(nic);
2086}
2087#endif
2088
Linus Torvalds1da177e2005-04-16 15:20:36 -07002089static int e100_set_mac_address(struct net_device *netdev, void *p)
2090{
2091 struct nic *nic = netdev_priv(netdev);
2092 struct sockaddr *addr = p;
2093
2094 if (!is_valid_ether_addr(addr->sa_data))
2095 return -EADDRNOTAVAIL;
2096
2097 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2098 e100_exec_cb(nic, NULL, e100_setup_iaaddr);
2099
2100 return 0;
2101}
2102
2103static int e100_change_mtu(struct net_device *netdev, int new_mtu)
2104{
2105 if(new_mtu < ETH_ZLEN || new_mtu > ETH_DATA_LEN)
2106 return -EINVAL;
2107 netdev->mtu = new_mtu;
2108 return 0;
2109}
2110
2111static int e100_asf(struct nic *nic)
2112{
2113 /* ASF can be enabled from eeprom */
2114 return((nic->pdev->device >= 0x1050) && (nic->pdev->device <= 0x1057) &&
2115 (nic->eeprom[eeprom_config_asf] & eeprom_asf) &&
2116 !(nic->eeprom[eeprom_config_asf] & eeprom_gcl) &&
2117 ((nic->eeprom[eeprom_smbus_addr] & 0xFF) != 0xFE));
2118}
2119
2120static int e100_up(struct nic *nic)
2121{
2122 int err;
2123
2124 if((err = e100_rx_alloc_list(nic)))
2125 return err;
2126 if((err = e100_alloc_cbs(nic)))
2127 goto err_rx_clean_list;
2128 if((err = e100_hw_init(nic)))
2129 goto err_clean_cbs;
2130 e100_set_multicast_list(nic->netdev);
Jeff Garzikca93ca42007-06-12 18:52:31 -04002131 e100_start_receiver(nic, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002132 mod_timer(&nic->watchdog, jiffies);
Thomas Gleixner1fb9df52006-07-01 19:29:39 -07002133 if((err = request_irq(nic->pdev->irq, e100_intr, IRQF_SHARED,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002134 nic->netdev->name, nic->netdev)))
2135 goto err_no_irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002136 netif_wake_queue(nic->netdev);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002137 napi_enable(&nic->napi);
Malli Chilakala0236ebb2005-04-28 19:17:42 -07002138 /* enable ints _after_ enabling poll, preventing a race between
2139 * disable ints+schedule */
2140 e100_enable_irq(nic);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002141 return 0;
2142
2143err_no_irq:
2144 del_timer_sync(&nic->watchdog);
2145err_clean_cbs:
2146 e100_clean_cbs(nic);
2147err_rx_clean_list:
2148 e100_rx_clean_list(nic);
2149 return err;
2150}
2151
2152static void e100_down(struct nic *nic)
2153{
Malli Chilakala0236ebb2005-04-28 19:17:42 -07002154 /* wait here for poll to complete */
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002155 napi_disable(&nic->napi);
Malli Chilakala0236ebb2005-04-28 19:17:42 -07002156 netif_stop_queue(nic->netdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002157 e100_hw_reset(nic);
2158 free_irq(nic->pdev->irq, nic->netdev);
2159 del_timer_sync(&nic->watchdog);
2160 netif_carrier_off(nic->netdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002161 e100_clean_cbs(nic);
2162 e100_rx_clean_list(nic);
2163}
2164
2165static void e100_tx_timeout(struct net_device *netdev)
2166{
2167 struct nic *nic = netdev_priv(netdev);
2168
Jesse Brandeburg05479932006-01-17 15:01:10 -08002169 /* Reset outside of interrupt context, to avoid request_irq
Malli Chilakala2acdb1e2005-04-28 19:16:58 -07002170 * in interrupt context */
2171 schedule_work(&nic->tx_timeout_task);
2172}
2173
David Howellsc4028952006-11-22 14:57:56 +00002174static void e100_tx_timeout_task(struct work_struct *work)
Malli Chilakala2acdb1e2005-04-28 19:16:58 -07002175{
David Howellsc4028952006-11-22 14:57:56 +00002176 struct nic *nic = container_of(work, struct nic, tx_timeout_task);
2177 struct net_device *netdev = nic->netdev;
Malli Chilakala2acdb1e2005-04-28 19:16:58 -07002178
Linus Torvalds1da177e2005-04-16 15:20:36 -07002179 DPRINTK(TX_ERR, DEBUG, "scb.status=0x%02X\n",
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002180 ioread8(&nic->csr->scb.status));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002181 e100_down(netdev_priv(netdev));
2182 e100_up(netdev_priv(netdev));
2183}
2184
2185static int e100_loopback_test(struct nic *nic, enum loopback loopback_mode)
2186{
2187 int err;
2188 struct sk_buff *skb;
2189
2190 /* Use driver resources to perform internal MAC or PHY
2191 * loopback test. A single packet is prepared and transmitted
2192 * in loopback mode, and the test passes if the received
2193 * packet compares byte-for-byte to the transmitted packet. */
2194
2195 if((err = e100_rx_alloc_list(nic)))
2196 return err;
2197 if((err = e100_alloc_cbs(nic)))
2198 goto err_clean_rx;
2199
2200 /* ICH PHY loopback is broken so do MAC loopback instead */
2201 if(nic->flags & ich && loopback_mode == lb_phy)
2202 loopback_mode = lb_mac;
2203
2204 nic->loopback = loopback_mode;
2205 if((err = e100_hw_init(nic)))
2206 goto err_loopback_none;
2207
2208 if(loopback_mode == lb_phy)
2209 mdio_write(nic->netdev, nic->mii.phy_id, MII_BMCR,
2210 BMCR_LOOPBACK);
2211
Jeff Garzikca93ca42007-06-12 18:52:31 -04002212 e100_start_receiver(nic, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002213
Auke Kok41875922006-08-31 14:27:48 -07002214 if(!(skb = netdev_alloc_skb(nic->netdev, ETH_DATA_LEN))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002215 err = -ENOMEM;
2216 goto err_loopback_none;
2217 }
2218 skb_put(skb, ETH_DATA_LEN);
2219 memset(skb->data, 0xFF, ETH_DATA_LEN);
2220 e100_xmit_frame(skb, nic->netdev);
2221
2222 msleep(10);
2223
Jesse Brandeburgaa49cdd2006-03-15 10:55:24 -08002224 pci_dma_sync_single_for_cpu(nic->pdev, nic->rx_to_clean->dma_addr,
Jesse Brandeburg773c9c12008-11-14 13:51:54 +00002225 RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
Jesse Brandeburgaa49cdd2006-03-15 10:55:24 -08002226
Linus Torvalds1da177e2005-04-16 15:20:36 -07002227 if(memcmp(nic->rx_to_clean->skb->data + sizeof(struct rfd),
2228 skb->data, ETH_DATA_LEN))
2229 err = -EAGAIN;
2230
2231err_loopback_none:
2232 mdio_write(nic->netdev, nic->mii.phy_id, MII_BMCR, 0);
2233 nic->loopback = lb_none;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002234 e100_clean_cbs(nic);
Jesse Brandeburgaa49cdd2006-03-15 10:55:24 -08002235 e100_hw_reset(nic);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002236err_clean_rx:
2237 e100_rx_clean_list(nic);
2238 return err;
2239}
2240
2241#define MII_LED_CONTROL 0x1B
2242static void e100_blink_led(unsigned long data)
2243{
2244 struct nic *nic = (struct nic *)data;
2245 enum led_state {
2246 led_on = 0x01,
2247 led_off = 0x04,
2248 led_on_559 = 0x05,
2249 led_on_557 = 0x07,
2250 };
2251
2252 nic->leds = (nic->leds & led_on) ? led_off :
2253 (nic->mac < mac_82559_D101M) ? led_on_557 : led_on_559;
2254 mdio_write(nic->netdev, nic->mii.phy_id, MII_LED_CONTROL, nic->leds);
2255 mod_timer(&nic->blink_timer, jiffies + HZ / 4);
2256}
2257
2258static int e100_get_settings(struct net_device *netdev, struct ethtool_cmd *cmd)
2259{
2260 struct nic *nic = netdev_priv(netdev);
2261 return mii_ethtool_gset(&nic->mii, cmd);
2262}
2263
2264static int e100_set_settings(struct net_device *netdev, struct ethtool_cmd *cmd)
2265{
2266 struct nic *nic = netdev_priv(netdev);
2267 int err;
2268
2269 mdio_write(netdev, nic->mii.phy_id, MII_BMCR, BMCR_RESET);
2270 err = mii_ethtool_sset(&nic->mii, cmd);
2271 e100_exec_cb(nic, NULL, e100_configure);
2272
2273 return err;
2274}
2275
2276static void e100_get_drvinfo(struct net_device *netdev,
2277 struct ethtool_drvinfo *info)
2278{
2279 struct nic *nic = netdev_priv(netdev);
2280 strcpy(info->driver, DRV_NAME);
2281 strcpy(info->version, DRV_VERSION);
2282 strcpy(info->fw_version, "N/A");
2283 strcpy(info->bus_info, pci_name(nic->pdev));
2284}
2285
Auke Kokabf9b902007-12-05 11:57:37 -08002286#define E100_PHY_REGS 0x1C
Linus Torvalds1da177e2005-04-16 15:20:36 -07002287static int e100_get_regs_len(struct net_device *netdev)
2288{
2289 struct nic *nic = netdev_priv(netdev);
Auke Kokabf9b902007-12-05 11:57:37 -08002290 return 1 + E100_PHY_REGS + sizeof(nic->mem->dump_buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002291}
2292
2293static void e100_get_regs(struct net_device *netdev,
2294 struct ethtool_regs *regs, void *p)
2295{
2296 struct nic *nic = netdev_priv(netdev);
2297 u32 *buff = p;
2298 int i;
2299
Auke Kok44c10132007-06-08 15:46:36 -07002300 regs->version = (1 << 24) | nic->pdev->revision;
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002301 buff[0] = ioread8(&nic->csr->scb.cmd_hi) << 24 |
2302 ioread8(&nic->csr->scb.cmd_lo) << 16 |
2303 ioread16(&nic->csr->scb.status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002304 for(i = E100_PHY_REGS; i >= 0; i--)
2305 buff[1 + E100_PHY_REGS - i] =
2306 mdio_read(netdev, nic->mii.phy_id, i);
2307 memset(nic->mem->dump_buf, 0, sizeof(nic->mem->dump_buf));
2308 e100_exec_cb(nic, NULL, e100_dump);
2309 msleep(10);
2310 memcpy(&buff[2 + E100_PHY_REGS], nic->mem->dump_buf,
2311 sizeof(nic->mem->dump_buf));
2312}
2313
2314static void e100_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
2315{
2316 struct nic *nic = netdev_priv(netdev);
2317 wol->supported = (nic->mac >= mac_82558_D101_A4) ? WAKE_MAGIC : 0;
2318 wol->wolopts = (nic->flags & wol_magic) ? WAKE_MAGIC : 0;
2319}
2320
2321static int e100_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
2322{
2323 struct nic *nic = netdev_priv(netdev);
2324
2325 if(wol->wolopts != WAKE_MAGIC && wol->wolopts != 0)
2326 return -EOPNOTSUPP;
2327
2328 if(wol->wolopts)
2329 nic->flags |= wol_magic;
2330 else
2331 nic->flags &= ~wol_magic;
2332
Linus Torvalds1da177e2005-04-16 15:20:36 -07002333 e100_exec_cb(nic, NULL, e100_configure);
2334
2335 return 0;
2336}
2337
2338static u32 e100_get_msglevel(struct net_device *netdev)
2339{
2340 struct nic *nic = netdev_priv(netdev);
2341 return nic->msg_enable;
2342}
2343
2344static void e100_set_msglevel(struct net_device *netdev, u32 value)
2345{
2346 struct nic *nic = netdev_priv(netdev);
2347 nic->msg_enable = value;
2348}
2349
2350static int e100_nway_reset(struct net_device *netdev)
2351{
2352 struct nic *nic = netdev_priv(netdev);
2353 return mii_nway_restart(&nic->mii);
2354}
2355
2356static u32 e100_get_link(struct net_device *netdev)
2357{
2358 struct nic *nic = netdev_priv(netdev);
2359 return mii_link_ok(&nic->mii);
2360}
2361
2362static int e100_get_eeprom_len(struct net_device *netdev)
2363{
2364 struct nic *nic = netdev_priv(netdev);
2365 return nic->eeprom_wc << 1;
2366}
2367
2368#define E100_EEPROM_MAGIC 0x1234
2369static int e100_get_eeprom(struct net_device *netdev,
2370 struct ethtool_eeprom *eeprom, u8 *bytes)
2371{
2372 struct nic *nic = netdev_priv(netdev);
2373
2374 eeprom->magic = E100_EEPROM_MAGIC;
2375 memcpy(bytes, &((u8 *)nic->eeprom)[eeprom->offset], eeprom->len);
2376
2377 return 0;
2378}
2379
2380static int e100_set_eeprom(struct net_device *netdev,
2381 struct ethtool_eeprom *eeprom, u8 *bytes)
2382{
2383 struct nic *nic = netdev_priv(netdev);
2384
2385 if(eeprom->magic != E100_EEPROM_MAGIC)
2386 return -EINVAL;
2387
2388 memcpy(&((u8 *)nic->eeprom)[eeprom->offset], bytes, eeprom->len);
2389
2390 return e100_eeprom_save(nic, eeprom->offset >> 1,
2391 (eeprom->len >> 1) + 1);
2392}
2393
2394static void e100_get_ringparam(struct net_device *netdev,
2395 struct ethtool_ringparam *ring)
2396{
2397 struct nic *nic = netdev_priv(netdev);
2398 struct param_range *rfds = &nic->params.rfds;
2399 struct param_range *cbs = &nic->params.cbs;
2400
2401 ring->rx_max_pending = rfds->max;
2402 ring->tx_max_pending = cbs->max;
2403 ring->rx_mini_max_pending = 0;
2404 ring->rx_jumbo_max_pending = 0;
2405 ring->rx_pending = rfds->count;
2406 ring->tx_pending = cbs->count;
2407 ring->rx_mini_pending = 0;
2408 ring->rx_jumbo_pending = 0;
2409}
2410
2411static int e100_set_ringparam(struct net_device *netdev,
2412 struct ethtool_ringparam *ring)
2413{
2414 struct nic *nic = netdev_priv(netdev);
2415 struct param_range *rfds = &nic->params.rfds;
2416 struct param_range *cbs = &nic->params.cbs;
2417
Jesse Brandeburg05479932006-01-17 15:01:10 -08002418 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002419 return -EINVAL;
2420
2421 if(netif_running(netdev))
2422 e100_down(nic);
2423 rfds->count = max(ring->rx_pending, rfds->min);
2424 rfds->count = min(rfds->count, rfds->max);
2425 cbs->count = max(ring->tx_pending, cbs->min);
2426 cbs->count = min(cbs->count, cbs->max);
2427 DPRINTK(DRV, INFO, "Ring Param settings: rx: %d, tx %d\n",
2428 rfds->count, cbs->count);
2429 if(netif_running(netdev))
2430 e100_up(nic);
2431
2432 return 0;
2433}
2434
2435static const char e100_gstrings_test[][ETH_GSTRING_LEN] = {
2436 "Link test (on/offline)",
2437 "Eeprom test (on/offline)",
2438 "Self test (offline)",
2439 "Mac loopback (offline)",
2440 "Phy loopback (offline)",
2441};
Alejandro Martinez Ruiz4c3616c2007-10-18 10:00:15 +02002442#define E100_TEST_LEN ARRAY_SIZE(e100_gstrings_test)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002443
Linus Torvalds1da177e2005-04-16 15:20:36 -07002444static void e100_diag_test(struct net_device *netdev,
2445 struct ethtool_test *test, u64 *data)
2446{
2447 struct ethtool_cmd cmd;
2448 struct nic *nic = netdev_priv(netdev);
2449 int i, err;
2450
2451 memset(data, 0, E100_TEST_LEN * sizeof(u64));
2452 data[0] = !mii_link_ok(&nic->mii);
2453 data[1] = e100_eeprom_load(nic);
2454 if(test->flags & ETH_TEST_FL_OFFLINE) {
2455
2456 /* save speed, duplex & autoneg settings */
2457 err = mii_ethtool_gset(&nic->mii, &cmd);
2458
2459 if(netif_running(netdev))
2460 e100_down(nic);
2461 data[2] = e100_self_test(nic);
2462 data[3] = e100_loopback_test(nic, lb_mac);
2463 data[4] = e100_loopback_test(nic, lb_phy);
2464
2465 /* restore speed, duplex & autoneg settings */
2466 err = mii_ethtool_sset(&nic->mii, &cmd);
2467
2468 if(netif_running(netdev))
2469 e100_up(nic);
2470 }
2471 for(i = 0; i < E100_TEST_LEN; i++)
2472 test->flags |= data[i] ? ETH_TEST_FL_FAILED : 0;
Malli Chilakalaa074fb82005-08-25 13:05:57 -07002473
2474 msleep_interruptible(4 * 1000);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002475}
2476
2477static int e100_phys_id(struct net_device *netdev, u32 data)
2478{
2479 struct nic *nic = netdev_priv(netdev);
2480
2481 if(!data || data > (u32)(MAX_SCHEDULE_TIMEOUT / HZ))
2482 data = (u32)(MAX_SCHEDULE_TIMEOUT / HZ);
2483 mod_timer(&nic->blink_timer, jiffies);
2484 msleep_interruptible(data * 1000);
2485 del_timer_sync(&nic->blink_timer);
2486 mdio_write(netdev, nic->mii.phy_id, MII_LED_CONTROL, 0);
2487
2488 return 0;
2489}
2490
2491static const char e100_gstrings_stats[][ETH_GSTRING_LEN] = {
2492 "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
2493 "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
2494 "rx_length_errors", "rx_over_errors", "rx_crc_errors",
2495 "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
2496 "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
2497 "tx_heartbeat_errors", "tx_window_errors",
2498 /* device-specific stats */
2499 "tx_deferred", "tx_single_collisions", "tx_multi_collisions",
2500 "tx_flow_control_pause", "rx_flow_control_pause",
2501 "rx_flow_control_unsupported", "tx_tco_packets", "rx_tco_packets",
2502};
2503#define E100_NET_STATS_LEN 21
Alejandro Martinez Ruiz4c3616c2007-10-18 10:00:15 +02002504#define E100_STATS_LEN ARRAY_SIZE(e100_gstrings_stats)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002505
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002506static int e100_get_sset_count(struct net_device *netdev, int sset)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002507{
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002508 switch (sset) {
2509 case ETH_SS_TEST:
2510 return E100_TEST_LEN;
2511 case ETH_SS_STATS:
2512 return E100_STATS_LEN;
2513 default:
2514 return -EOPNOTSUPP;
2515 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002516}
2517
2518static void e100_get_ethtool_stats(struct net_device *netdev,
2519 struct ethtool_stats *stats, u64 *data)
2520{
2521 struct nic *nic = netdev_priv(netdev);
2522 int i;
2523
2524 for(i = 0; i < E100_NET_STATS_LEN; i++)
Jeff Garzik09f75cd2007-10-03 17:41:50 -07002525 data[i] = ((unsigned long *)&netdev->stats)[i];
Linus Torvalds1da177e2005-04-16 15:20:36 -07002526
2527 data[i++] = nic->tx_deferred;
2528 data[i++] = nic->tx_single_collisions;
2529 data[i++] = nic->tx_multiple_collisions;
2530 data[i++] = nic->tx_fc_pause;
2531 data[i++] = nic->rx_fc_pause;
2532 data[i++] = nic->rx_fc_unsupported;
2533 data[i++] = nic->tx_tco_frames;
2534 data[i++] = nic->rx_tco_frames;
2535}
2536
2537static void e100_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
2538{
2539 switch(stringset) {
2540 case ETH_SS_TEST:
2541 memcpy(data, *e100_gstrings_test, sizeof(e100_gstrings_test));
2542 break;
2543 case ETH_SS_STATS:
2544 memcpy(data, *e100_gstrings_stats, sizeof(e100_gstrings_stats));
2545 break;
2546 }
2547}
2548
Jeff Garzik7282d492006-09-13 14:30:00 -04002549static const struct ethtool_ops e100_ethtool_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002550 .get_settings = e100_get_settings,
2551 .set_settings = e100_set_settings,
2552 .get_drvinfo = e100_get_drvinfo,
2553 .get_regs_len = e100_get_regs_len,
2554 .get_regs = e100_get_regs,
2555 .get_wol = e100_get_wol,
2556 .set_wol = e100_set_wol,
2557 .get_msglevel = e100_get_msglevel,
2558 .set_msglevel = e100_set_msglevel,
2559 .nway_reset = e100_nway_reset,
2560 .get_link = e100_get_link,
2561 .get_eeprom_len = e100_get_eeprom_len,
2562 .get_eeprom = e100_get_eeprom,
2563 .set_eeprom = e100_set_eeprom,
2564 .get_ringparam = e100_get_ringparam,
2565 .set_ringparam = e100_set_ringparam,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002566 .self_test = e100_diag_test,
2567 .get_strings = e100_get_strings,
2568 .phys_id = e100_phys_id,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002569 .get_ethtool_stats = e100_get_ethtool_stats,
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002570 .get_sset_count = e100_get_sset_count,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002571};
2572
2573static int e100_do_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2574{
2575 struct nic *nic = netdev_priv(netdev);
2576
2577 return generic_mii_ioctl(&nic->mii, if_mii(ifr), cmd, NULL);
2578}
2579
2580static int e100_alloc(struct nic *nic)
2581{
2582 nic->mem = pci_alloc_consistent(nic->pdev, sizeof(struct mem),
2583 &nic->dma_addr);
2584 return nic->mem ? 0 : -ENOMEM;
2585}
2586
2587static void e100_free(struct nic *nic)
2588{
2589 if(nic->mem) {
2590 pci_free_consistent(nic->pdev, sizeof(struct mem),
2591 nic->mem, nic->dma_addr);
2592 nic->mem = NULL;
2593 }
2594}
2595
2596static int e100_open(struct net_device *netdev)
2597{
2598 struct nic *nic = netdev_priv(netdev);
2599 int err = 0;
2600
2601 netif_carrier_off(netdev);
2602 if((err = e100_up(nic)))
2603 DPRINTK(IFUP, ERR, "Cannot open interface, aborting.\n");
2604 return err;
2605}
2606
2607static int e100_close(struct net_device *netdev)
2608{
2609 e100_down(netdev_priv(netdev));
2610 return 0;
2611}
2612
2613static int __devinit e100_probe(struct pci_dev *pdev,
2614 const struct pci_device_id *ent)
2615{
2616 struct net_device *netdev;
2617 struct nic *nic;
2618 int err;
Joe Perches0795af52007-10-03 17:59:30 -07002619 DECLARE_MAC_BUF(mac);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002620
2621 if(!(netdev = alloc_etherdev(sizeof(struct nic)))) {
2622 if(((1 << debug) - 1) & NETIF_MSG_PROBE)
2623 printk(KERN_ERR PFX "Etherdev alloc failed, abort.\n");
2624 return -ENOMEM;
2625 }
2626
2627 netdev->open = e100_open;
2628 netdev->stop = e100_close;
2629 netdev->hard_start_xmit = e100_xmit_frame;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002630 netdev->set_multicast_list = e100_set_multicast_list;
2631 netdev->set_mac_address = e100_set_mac_address;
2632 netdev->change_mtu = e100_change_mtu;
2633 netdev->do_ioctl = e100_do_ioctl;
2634 SET_ETHTOOL_OPS(netdev, &e100_ethtool_ops);
2635 netdev->tx_timeout = e100_tx_timeout;
2636 netdev->watchdog_timeo = E100_WATCHDOG_PERIOD;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002637#ifdef CONFIG_NET_POLL_CONTROLLER
2638 netdev->poll_controller = e100_netpoll;
2639#endif
Auke Kok0eb5a342006-09-27 12:53:17 -07002640 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002641
2642 nic = netdev_priv(netdev);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002643 netif_napi_add(netdev, &nic->napi, e100_poll, E100_NAPI_WEIGHT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002644 nic->netdev = netdev;
2645 nic->pdev = pdev;
2646 nic->msg_enable = (1 << debug) - 1;
2647 pci_set_drvdata(pdev, netdev);
2648
2649 if((err = pci_enable_device(pdev))) {
2650 DPRINTK(PROBE, ERR, "Cannot enable PCI device, aborting.\n");
2651 goto err_out_free_dev;
2652 }
2653
2654 if(!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2655 DPRINTK(PROBE, ERR, "Cannot find proper PCI device "
2656 "base address, aborting.\n");
2657 err = -ENODEV;
2658 goto err_out_disable_pdev;
2659 }
2660
2661 if((err = pci_request_regions(pdev, DRV_NAME))) {
2662 DPRINTK(PROBE, ERR, "Cannot obtain PCI resources, aborting.\n");
2663 goto err_out_disable_pdev;
2664 }
2665
Domen Puncer1e7f0bd2005-06-26 18:22:14 -04002666 if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002667 DPRINTK(PROBE, ERR, "No usable DMA configuration, aborting.\n");
2668 goto err_out_free_res;
2669 }
2670
Linus Torvalds1da177e2005-04-16 15:20:36 -07002671 SET_NETDEV_DEV(netdev, &pdev->dev);
2672
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002673 if (use_io)
2674 DPRINTK(PROBE, INFO, "using i/o access mode\n");
2675
2676 nic->csr = pci_iomap(pdev, (use_io ? 1 : 0), sizeof(struct csr));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002677 if(!nic->csr) {
2678 DPRINTK(PROBE, ERR, "Cannot map device registers, aborting.\n");
2679 err = -ENOMEM;
2680 goto err_out_free_res;
2681 }
2682
2683 if(ent->driver_data)
2684 nic->flags |= ich;
2685 else
2686 nic->flags &= ~ich;
2687
2688 e100_get_defaults(nic);
2689
Malli Chilakala1f533672005-04-28 19:17:20 -07002690 /* locks must be initialized before calling hw_reset */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002691 spin_lock_init(&nic->cb_lock);
2692 spin_lock_init(&nic->cmd_lock);
ODonnell, Michaelac7c6662006-01-11 11:26:22 -08002693 spin_lock_init(&nic->mdio_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002694
2695 /* Reset the device before pci_set_master() in case device is in some
2696 * funky state and has an interrupt pending - hint: we don't have the
2697 * interrupt handler registered yet. */
2698 e100_hw_reset(nic);
2699
2700 pci_set_master(pdev);
2701
2702 init_timer(&nic->watchdog);
2703 nic->watchdog.function = e100_watchdog;
2704 nic->watchdog.data = (unsigned long)nic;
2705 init_timer(&nic->blink_timer);
2706 nic->blink_timer.function = e100_blink_led;
2707 nic->blink_timer.data = (unsigned long)nic;
2708
David Howellsc4028952006-11-22 14:57:56 +00002709 INIT_WORK(&nic->tx_timeout_task, e100_tx_timeout_task);
Malli Chilakala2acdb1e2005-04-28 19:16:58 -07002710
Linus Torvalds1da177e2005-04-16 15:20:36 -07002711 if((err = e100_alloc(nic))) {
2712 DPRINTK(PROBE, ERR, "Cannot alloc driver memory, aborting.\n");
2713 goto err_out_iounmap;
2714 }
2715
Linus Torvalds1da177e2005-04-16 15:20:36 -07002716 if((err = e100_eeprom_load(nic)))
2717 goto err_out_free;
2718
Malli Chilakalaf92d8722005-06-17 17:30:22 -07002719 e100_phy_init(nic);
2720
Linus Torvalds1da177e2005-04-16 15:20:36 -07002721 memcpy(netdev->dev_addr, nic->eeprom, ETH_ALEN);
John W. Linvillea92dd922005-09-12 10:48:56 -04002722 memcpy(netdev->perm_addr, nic->eeprom, ETH_ALEN);
Jesse Brandeburg948cd432007-04-26 09:43:11 -07002723 if (!is_valid_ether_addr(netdev->perm_addr)) {
2724 if (!eeprom_bad_csum_allow) {
2725 DPRINTK(PROBE, ERR, "Invalid MAC address from "
2726 "EEPROM, aborting.\n");
2727 err = -EAGAIN;
2728 goto err_out_free;
2729 } else {
2730 DPRINTK(PROBE, ERR, "Invalid MAC address from EEPROM, "
2731 "you MUST configure one.\n");
2732 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002733 }
2734
2735 /* Wol magic packet can be enabled from eeprom */
2736 if((nic->mac >= mac_82558_D101_A4) &&
2737 (nic->eeprom[eeprom_id] & eeprom_id_wol))
2738 nic->flags |= wol_magic;
2739
Malli Chilakala6bdacb12005-04-28 19:17:54 -07002740 /* ack any pending wake events, disable PME */
Rafael J. Wysockie7272402008-08-08 00:18:04 +02002741 pci_pme_active(pdev, false);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002742
2743 strcpy(netdev->name, "eth%d");
2744 if((err = register_netdev(netdev))) {
2745 DPRINTK(PROBE, ERR, "Cannot register net device, aborting.\n");
2746 goto err_out_free;
2747 }
2748
Joe Perches0795af52007-10-03 17:59:30 -07002749 DPRINTK(PROBE, INFO, "addr 0x%llx, irq %d, MAC addr %s\n",
2750 (unsigned long long)pci_resource_start(pdev, use_io ? 1 : 0),
2751 pdev->irq, print_mac(mac, netdev->dev_addr));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002752
2753 return 0;
2754
2755err_out_free:
2756 e100_free(nic);
2757err_out_iounmap:
Jesse Brandeburg27345bb2007-04-26 09:43:20 -07002758 pci_iounmap(pdev, nic->csr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002759err_out_free_res:
2760 pci_release_regions(pdev);
2761err_out_disable_pdev:
2762 pci_disable_device(pdev);
2763err_out_free_dev:
2764 pci_set_drvdata(pdev, NULL);
2765 free_netdev(netdev);
2766 return err;
2767}
2768
2769static void __devexit e100_remove(struct pci_dev *pdev)
2770{
2771 struct net_device *netdev = pci_get_drvdata(pdev);
2772
2773 if(netdev) {
2774 struct nic *nic = netdev_priv(netdev);
2775 unregister_netdev(netdev);
2776 e100_free(nic);
Jiri Slaby915e91d2008-01-29 22:49:16 +01002777 pci_iounmap(pdev, nic->csr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002778 free_netdev(netdev);
2779 pci_release_regions(pdev);
2780 pci_disable_device(pdev);
2781 pci_set_drvdata(pdev, NULL);
2782 }
2783}
2784
Linus Torvalds1da177e2005-04-16 15:20:36 -07002785static int e100_suspend(struct pci_dev *pdev, pm_message_t state)
2786{
2787 struct net_device *netdev = pci_get_drvdata(pdev);
2788 struct nic *nic = netdev_priv(netdev);
2789
Auke Kok824545e2006-10-24 14:49:44 -07002790 if (netif_running(netdev))
Auke Kokf9022832008-03-03 14:37:31 -08002791 e100_down(nic);
Auke Kok518d8332007-01-29 14:31:16 -08002792 netif_device_detach(netdev);
Auke Koka53a33d2007-01-31 11:02:46 -08002793
Linus Torvalds1da177e2005-04-16 15:20:36 -07002794 pci_save_state(pdev);
Auke Koke8e82b72006-10-19 23:28:12 -07002795
2796 if ((nic->flags & wol_magic) | e100_asf(nic)) {
2797 pci_enable_wake(pdev, PCI_D3hot, 1);
2798 pci_enable_wake(pdev, PCI_D3cold, 1);
2799 } else {
2800 pci_enable_wake(pdev, PCI_D3hot, 0);
2801 pci_enable_wake(pdev, PCI_D3cold, 0);
2802 }
Auke Kok975b3662006-09-27 12:53:25 -07002803
Auke Kok8543da62007-12-12 16:30:42 -08002804 pci_disable_device(pdev);
Auke Koke8e82b72006-10-19 23:28:12 -07002805 pci_set_power_state(pdev, PCI_D3hot);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002806
2807 return 0;
2808}
2809
Auke Kokf9022832008-03-03 14:37:31 -08002810#ifdef CONFIG_PM
Linus Torvalds1da177e2005-04-16 15:20:36 -07002811static int e100_resume(struct pci_dev *pdev)
2812{
2813 struct net_device *netdev = pci_get_drvdata(pdev);
2814 struct nic *nic = netdev_priv(netdev);
2815
Auke Kok975b3662006-09-27 12:53:25 -07002816 pci_set_power_state(pdev, PCI_D0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002817 pci_restore_state(pdev);
Malli Chilakala6bdacb12005-04-28 19:17:54 -07002818 /* ack any pending wake events, disable PME */
Auke Kok975b3662006-09-27 12:53:25 -07002819 pci_enable_wake(pdev, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002820
2821 netif_device_attach(netdev);
Auke Kok975b3662006-09-27 12:53:25 -07002822 if (netif_running(netdev))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002823 e100_up(nic);
2824
2825 return 0;
2826}
Auke Kok975b3662006-09-27 12:53:25 -07002827#endif /* CONFIG_PM */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002828
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07002829static void e100_shutdown(struct pci_dev *pdev)
Malli Chilakala6bdacb12005-04-28 19:17:54 -07002830{
Auke Kokf9022832008-03-03 14:37:31 -08002831 e100_suspend(pdev, PMSG_SUSPEND);
Malli Chilakala6bdacb12005-04-28 19:17:54 -07002832}
2833
Auke Kok2cc30492006-06-08 09:30:18 -07002834/* ------------------ PCI Error Recovery infrastructure -------------- */
2835/**
2836 * e100_io_error_detected - called when PCI error is detected.
2837 * @pdev: Pointer to PCI device
Andreas Mohr0a0863a2008-02-01 08:21:39 -08002838 * @state: The current pci connection state
Auke Kok2cc30492006-06-08 09:30:18 -07002839 */
2840static pci_ers_result_t e100_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
2841{
2842 struct net_device *netdev = pci_get_drvdata(pdev);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002843 struct nic *nic = netdev_priv(netdev);
Auke Kok2cc30492006-06-08 09:30:18 -07002844
Andreas Mohr0a0863a2008-02-01 08:21:39 -08002845 /* Similar to calling e100_down(), but avoids adapter I/O. */
Auke Kok2cc30492006-06-08 09:30:18 -07002846 netdev->stop(netdev);
2847
Andreas Mohr0a0863a2008-02-01 08:21:39 -08002848 /* Detach; put netif into a state similar to hotplug unplug. */
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002849 napi_enable(&nic->napi);
Auke Kok2cc30492006-06-08 09:30:18 -07002850 netif_device_detach(netdev);
Linas Vepstasb1d26f22006-08-31 14:27:48 -07002851 pci_disable_device(pdev);
Auke Kok2cc30492006-06-08 09:30:18 -07002852
2853 /* Request a slot reset. */
2854 return PCI_ERS_RESULT_NEED_RESET;
2855}
2856
2857/**
2858 * e100_io_slot_reset - called after the pci bus has been reset.
2859 * @pdev: Pointer to PCI device
2860 *
2861 * Restart the card from scratch.
2862 */
2863static pci_ers_result_t e100_io_slot_reset(struct pci_dev *pdev)
2864{
2865 struct net_device *netdev = pci_get_drvdata(pdev);
2866 struct nic *nic = netdev_priv(netdev);
2867
2868 if (pci_enable_device(pdev)) {
2869 printk(KERN_ERR "e100: Cannot re-enable PCI device after reset.\n");
2870 return PCI_ERS_RESULT_DISCONNECT;
2871 }
2872 pci_set_master(pdev);
2873
2874 /* Only one device per card can do a reset */
2875 if (0 != PCI_FUNC(pdev->devfn))
2876 return PCI_ERS_RESULT_RECOVERED;
2877 e100_hw_reset(nic);
2878 e100_phy_init(nic);
2879
2880 return PCI_ERS_RESULT_RECOVERED;
2881}
2882
2883/**
2884 * e100_io_resume - resume normal operations
2885 * @pdev: Pointer to PCI device
2886 *
2887 * Resume normal operations after an error recovery
2888 * sequence has been completed.
2889 */
2890static void e100_io_resume(struct pci_dev *pdev)
2891{
2892 struct net_device *netdev = pci_get_drvdata(pdev);
2893 struct nic *nic = netdev_priv(netdev);
2894
2895 /* ack any pending wake events, disable PME */
2896 pci_enable_wake(pdev, 0, 0);
2897
2898 netif_device_attach(netdev);
2899 if (netif_running(netdev)) {
2900 e100_open(netdev);
2901 mod_timer(&nic->watchdog, jiffies);
2902 }
2903}
2904
2905static struct pci_error_handlers e100_err_handler = {
2906 .error_detected = e100_io_error_detected,
2907 .slot_reset = e100_io_slot_reset,
2908 .resume = e100_io_resume,
2909};
Malli Chilakala6bdacb12005-04-28 19:17:54 -07002910
Linus Torvalds1da177e2005-04-16 15:20:36 -07002911static struct pci_driver e100_driver = {
2912 .name = DRV_NAME,
2913 .id_table = e100_id_table,
2914 .probe = e100_probe,
2915 .remove = __devexit_p(e100_remove),
Auke Koke8e82b72006-10-19 23:28:12 -07002916#ifdef CONFIG_PM
Auke Kok975b3662006-09-27 12:53:25 -07002917 /* Power Management hooks */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002918 .suspend = e100_suspend,
2919 .resume = e100_resume,
2920#endif
Jesse Brandeburg05479932006-01-17 15:01:10 -08002921 .shutdown = e100_shutdown,
Auke Kok2cc30492006-06-08 09:30:18 -07002922 .err_handler = &e100_err_handler,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002923};
2924
2925static int __init e100_init_module(void)
2926{
2927 if(((1 << debug) - 1) & NETIF_MSG_DRV) {
2928 printk(KERN_INFO PFX "%s, %s\n", DRV_DESCRIPTION, DRV_VERSION);
2929 printk(KERN_INFO PFX "%s\n", DRV_COPYRIGHT);
2930 }
Jeff Garzik29917622006-08-19 17:48:59 -04002931 return pci_register_driver(&e100_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002932}
2933
2934static void __exit e100_cleanup_module(void)
2935{
2936 pci_unregister_driver(&e100_driver);
2937}
2938
2939module_init(e100_init_module);
2940module_exit(e100_cleanup_module);