e1000_main.c 170 KB
Newer Older
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
/*******************************************************************************

  Intel PRO/1000 Linux driver
  Copyright(c) 1999 - 2008 Intel Corporation.

  This program is free software; you can redistribute it and/or modify it
  under the terms and conditions of the GNU General Public License,
  version 2, as published by the Free Software Foundation.

  This program is distributed in the hope it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  more details.

  You should have received a copy of the GNU General Public License along with
  this program; if not, write to the Free Software Foundation, Inc.,
  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

  The full GNU General Public License is included in this distribution in
  the file called "COPYING".

  Contact Information:
  Linux NICS <linux.nics@intel.com>
  e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

*******************************************************************************/

#include <linux/module.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/vmalloc.h>
#include <linux/pagemap.h>
#include <linux/netdevice.h>
#include <linux/tcp.h>
#include <linux/ipv6.h>


// RTNET defines...
#ifdef NETIF_F_TSO
#undef NETIF_F_TSO
#endif

#ifdef NETIF_F_TSO6
#undef NETIF_F_TSO6
#endif

#ifdef NETIF_F_HW_VLAN_TX
#undef NETIF_F_HW_VLAN_TX
#endif

#ifdef CONFIG_E1000_NAPI
#undef CONFIG_E1000_NAPI
#endif

#ifdef MAX_SKB_FRAGS
#undef MAX_SKB_FRAGS
#endif

#ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
#define CONFIG_E1000_DISABLE_PACKET_SPLIT
#endif

#ifdef CONFIG_E1000_MQ
#undef CONFIG_E1000_MQ
#endif

#ifdef CONFIG_NET_POLL_CONTROLLER
#undef CONFIG_NET_POLL_CONTROLLER
#endif

#ifdef CONFIG_PM
#undef CONFIG_PM
#endif

#ifdef HAVE_PCI_ERS
#error "STOP it here"
#undef HAVE_PCI_ERS
#endif

#ifdef USE_REBOOT_NOTIFIER
#undef USE_REBOOT_NOTIFIER
#endif

#ifdef HAVE_TX_TIMEOUT
#undef HAVE_TX_TIMEOUT
#endif


#ifdef NETIF_F_TSO
#include <net/checksum.h>
#ifdef NETIF_F_TSO6
#include <net/ip6_checksum.h>
#endif
#endif
#ifdef SIOCGMIIPHY
#include <linux/mii.h>
#endif
#ifdef SIOCETHTOOL
#include <linux/ethtool.h>
#endif
#ifdef NETIF_F_HW_VLAN_TX
#include <linux/if_vlan.h>
#endif
#ifdef CONFIG_E1000_MQ
#include <linux/cpu.h>
#include <linux/smp.h>
#endif

#include "e1000.h"

#ifdef HAVE_PCI_ERS
#error "STOP it here"
#endif



char e1000_driver_name[MODULE_NAME_LEN] = "rt_e1000";
static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";

#ifdef CONFIG_E1000_NAPI
#define DRV_NAPI "-NAPI"
#else
#define DRV_NAPI
#endif


#define DRV_DEBUG

#define DRV_HW_PERF

132
133
/*
 * Port to rtnet based on e1000 driver version 7.6.15.5 (22-Sep-2008 Mathias Koehrer)
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
 *
 * */

#define DRV_VERSION "7.6.15.5" DRV_NAPI DRV_DEBUG DRV_HW_PERF " ported to RTnet"
const char e1000_driver_version[] = DRV_VERSION;
static const char e1000_copyright[] = "Copyright (c) 1999-2008 Intel Corporation.";

// RTNET wrappers
#define kmalloc(a,b) rtdm_malloc(a)
#define vmalloc(a) rtdm_malloc(a)
#define kfree(a) rtdm_free(a)
#define vfree(a) rtdm_free(a)
#define skb_reserve(a,b) rtskb_reserve(a,b)
#define net_device rtnet_device
#define sk_buff rtskb
#define netdev_priv(a) a->priv
// ----------------------



/* e1000_pci_tbl - PCI Device ID Table
 *
 * Last entry must be all 0s
 *
 * Macro expands to...
 *   {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
 */

#define PCI_ID_LIST_PCI  \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82542), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82543GC_FIBER), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82543GC_COPPER), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82544EI_COPPER), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82544EI_FIBER), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82544GC_COPPER), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82544GC_LOM), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82540EM), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82545EM_COPPER), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82546EB_COPPER), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82545EM_FIBER), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82546EB_FIBER), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82541EI), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82541ER_LOM), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82540EM_LOM), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82540EP_LOM), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82540EP), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82541EI_MOBILE), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82547EI), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82547EI_MOBILE), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82546EB_QUAD_COPPER), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82540EP_LP), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82545GM_COPPER), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82545GM_FIBER), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82545GM_SERDES), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82547GI), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82541GI), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82541GI_MOBILE), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82541ER), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82546GB_COPPER), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82546GB_FIBER), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82546GB_SERDES), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82541GI_LF), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82546GB_PCIE), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82546GB_QUAD_COPPER), \
	  INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3)

#define PCI_ID_LIST_PCIE  \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_ICH8_IGP_M_AMT), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_ICH8_IGP_AMT), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_ICH8_IGP_C), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_ICH8_IFE), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_ICH8_IGP_M), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82571EB_COPPER), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82571EB_FIBER), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82571EB_SERDES), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82572EI_COPPER), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82572EI_FIBER), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82572EI_SERDES), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82573E), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82573E_IAMT), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_80003ES2LAN_COPPER_DPT), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_80003ES2LAN_SERDES_DPT), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82573L), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82571EB_QUAD_COPPER), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82571EB_QUAD_FIBER), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82571EB_SERDES_DUAL), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82571EB_SERDES_QUAD), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82572EI), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_80003ES2LAN_COPPER_SPT), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_80003ES2LAN_SERDES_SPT), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82571EB_QUAD_COPPER_LP), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_82571PT_QUAD_COPPER), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_ICH8_IFE_GT), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_ICH8_IFE_G), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_ICH9_IGP_AMT), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_ICH9_IGP_C), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_ICH9_IFE), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_ICH9_IFE_G), \
	 INTEL_E1000_ETHERNET_DEVICE(E1000_DEV_ID_ICH9_IFE_GT)




static struct pci_device_id e1000_pci_tbl[] = {
    PCI_ID_LIST_PCI,
    PCI_ID_LIST_PCIE,
	/* required last entry */
	{0,}
};
MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);

static struct pci_device_id e1000_pcipure_tbl[] = {
    PCI_ID_LIST_PCI,
	/* required last entry */
	{0,}
};

static struct pci_device_id e1000_pcie_tbl[] = {
    PCI_ID_LIST_PCIE,
	/* required last entry */
	{0,}
};



static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
260
				    struct e1000_tx_ring *tx_ring);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
261
static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
262
				    struct e1000_rx_ring *rx_ring);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
263
static void e1000_free_tx_resources(struct e1000_adapter *adapter,
264
				    struct e1000_tx_ring *tx_ring);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
265
static void e1000_free_rx_resources(struct e1000_adapter *adapter,
266
				    struct e1000_rx_ring *rx_ring);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285

static int e1000_init_module(void);
static void e1000_exit_module(void);
static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
static void e1000_remove(struct pci_dev *pdev);
static int e1000_alloc_queues(struct e1000_adapter *adapter);
#ifdef CONFIG_E1000_MQ
static void e1000_setup_queue_mapping(struct e1000_adapter *adapter);
#endif
static int e1000_sw_init(struct e1000_adapter *adapter);
static int e1000_open(struct net_device *netdev);
static int e1000_close(struct net_device *netdev);
static void e1000_configure(struct e1000_adapter *adapter);
static void e1000_configure_tx(struct e1000_adapter *adapter);
static void e1000_configure_rx(struct e1000_adapter *adapter);
static void e1000_setup_rctl(struct e1000_adapter *adapter);
static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter);
static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter);
static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
286
				struct e1000_tx_ring *tx_ring);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
287
static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
288
				struct e1000_rx_ring *rx_ring);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
289
static void e1000_set_multi(struct net_device *netdev);
290
static void e1000_update_phy_info_task(struct work_struct *work);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
291
static void e1000_watchdog_task(struct work_struct *work);
292
static void e1000_82547_tx_fifo_stall_task(struct work_struct *work);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
293
static int e1000_xmit_frame_ring(struct sk_buff *skb, struct net_device *netdev,
294
				 struct e1000_tx_ring *tx_ring);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
295
296
297
static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
#ifdef CONFIG_E1000_MQ
static int e1000_subqueue_xmit_frame(struct sk_buff *skb,
298
				     struct net_device *netdev, int queue);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
299
300
#endif
static void e1000_phy_read_status(struct e1000_adapter *adapter);
301
#if 0
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
302
303
304
static struct net_device_stats * e1000_get_stats(struct net_device *netdev);
static int e1000_change_mtu(struct net_device *netdev, int new_mtu);
static int e1000_set_mac(struct net_device *netdev, void *p);
305
#endif
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
306
307
308
static int  e1000_intr(rtdm_irq_t *irq_handle);
static int e1000_intr_msi(rtdm_irq_t *irq_handle);
static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
309
				    struct e1000_tx_ring *tx_ring);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
310
311
312
#ifdef CONFIG_E1000_NAPI
static int e1000_poll(struct napi_struct *napi, int budget);
static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
313
314
				    struct e1000_rx_ring *rx_ring,
				    int *work_done, int work_to_do);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
315
static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
316
317
				       struct e1000_rx_ring *rx_ring,
				       int *work_done, int work_to_do);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
318
static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
319
320
					  struct e1000_rx_ring *rx_ring,
					  int *work_done, int work_to_do);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
321
static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
322
323
					 struct e1000_rx_ring *rx_ring,
					 int cleaned_count);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
324
325
#else
static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
326
327
				    struct e1000_rx_ring *rx_ring,
					 nanosecs_abs_t *time_stamp);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
328
static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
329
330
				       struct e1000_rx_ring *rx_ring,
					 nanosecs_abs_t *time_stamp);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
331
332
#endif
static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
333
334
				   struct e1000_rx_ring *rx_ring,
				   int cleaned_count);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
335
static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
336
337
				      struct e1000_rx_ring *rx_ring,
				      int cleaned_count);
338
#if 0
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
339
340
341
static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
#ifdef SIOCGMIIPHY
static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
342
			   int cmd);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
343
344
345
static void e1000_enter_82542_rst(struct e1000_adapter *adapter);
static void e1000_leave_82542_rst(struct e1000_adapter *adapter);
static void e1000_tx_timeout(struct net_device *dev);
346
347
#endif
#endif
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
348
349
350
static void e1000_reset_task(struct work_struct *work);
static void e1000_smartspeed(struct e1000_adapter *adapter);
static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
351
				       struct sk_buff *skb);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
352
353
354

#ifdef NETIF_F_HW_VLAN_TX
static void e1000_vlan_rx_register(struct net_device *netdev,
355
				   struct vlan_group *grp);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
356
357
358
359
360
361
362
363
364
365
366
367
368
static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid);
static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid);
static void e1000_restore_vlan(struct e1000_adapter *adapter);
#endif

// static int e1000_suspend(struct pci_dev *pdev, pm_message_t state);
#ifdef CONFIG_PM
static int e1000_resume(struct pci_dev *pdev);
#endif
#ifndef USE_REBOOT_NOTIFIER
// static void e1000_shutdown(struct pci_dev *pdev);
#else
static int e1000_notify_reboot(struct notifier_block *, unsigned long event,
369
			       void *ptr);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
static struct notifier_block e1000_notifier_reboot = {
	.notifier_call	= e1000_notify_reboot,
	.next		= NULL,
	.priority	= 0
};
#endif

#ifdef CONFIG_NET_POLL_CONTROLLER
/* for netdump / net console */
static void e1000_netpoll (struct net_device *netdev);
#endif

#define COPYBREAK_DEFAULT 256
static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT;
module_param(copybreak, uint, 0644);
MODULE_PARM_DESC(copybreak,
	"Maximum size of packet that is copied to a new buffer on receive");


#ifdef HAVE_PCI_ERS
static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
391
		     pci_channel_state_t state);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev);
static void e1000_io_resume(struct pci_dev *pdev);

static struct pci_error_handlers e1000_err_handler = {
	.error_detected = e1000_io_error_detected,
	.slot_reset = e1000_io_slot_reset,
	.resume = e1000_io_resume,
};
#endif

static struct pci_driver e1000_driver = {
	.name     = e1000_driver_name,
	.id_table = e1000_pci_tbl,
	.probe    = e1000_probe,
	.remove   = e1000_remove,
#ifdef HAVE_PCI_ERS
	.err_handler = &e1000_err_handler
#endif
};

MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);

#define MAX_UNITS 8
static int cards[MAX_UNITS] = { [0 ... (MAX_UNITS-1)] = 1 };
419
module_param_array(cards, int, NULL, 0444);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
420
421
422
MODULE_PARM_DESC(cards, "array of cards to be supported (eg. 1,0,1)");


423
424
425
static int local_debug = NETIF_MSG_DRV | NETIF_MSG_PROBE;
module_param(local_debug, int, 0);
MODULE_PARM_DESC(local_debug, "Debug level (0=none,...,16=all)");
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
426

427
/* The parameter 'pciif' might be used to use this driver for
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
428
429
430
431
432
433
434
435
436
437
438
439
440
 * PCI or PCIe only NICs.
 * This allows to reflect the situation that newer Linux kernels
 * have two different (non real time) drivers for the e1000:
 * e1000 for PCI only
 * e1000e for PCIe only
 *
 * Using the 'pciif' parameter allows to load the driver
 *  modprobe rt_e1000 pciif=pci
 * to use it as PCI only
 * and a
 *  modprobe rt_e1000 -o rt_e1000e pciif=pcie
 * allows to load a second instance of this driver named 'rt_e1000e'
 *
441
 * If the 'pciif' paramter is not specified, all (PCI and PCIe) e1000
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
 * NICs will be used.
 * */
static char *pciif = "all";
module_param(pciif, charp, 0);
MODULE_PARM_DESC(pciif, "PCI Interface: 'all' (default), 'pci', 'pcie'");


//#define register_netdev(a) rt_register_rtnetdev(a)
//#define unregister_netdev(a) rt_unregister_rtnetdev(a)
//#define free_netdev(a) rtdev_free(a)
//#define netif_stop_queue(a) rtnetif_stop_queue(a)

/**
 * e1000_init_module - Driver Registration Routine
 *
 * e1000_init_module is the first routine called when the driver is
 * loaded. All it does is register with the PCI subsystem.
 **/
static int __init e1000_init_module(void)
{
	int ret;
    strcpy(e1000_driver_name, THIS_MODULE->name);
	printk(KERN_INFO "%s - %s version %s (pciif: %s)\n",
	       e1000_driver_string, e1000_driver_name, e1000_driver_version, pciif);

	printk(KERN_INFO "%s\n", e1000_copyright);


    if (0 == strcmp(pciif, "pcie"))
    {
472
	// PCIe only
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
473
474
475
476
	    e1000_driver.id_table = e1000_pcie_tbl;
    }
    else if (0 == strcmp(pciif, "pci"))
    {
477
	// PCI only
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
	    e1000_driver.id_table = e1000_pcipure_tbl;
    }

	ret = pci_register_driver(&e1000_driver);
#ifdef USE_REBOOT_NOTIFIER
	if (ret >= 0) {
		register_reboot_notifier(&e1000_notifier_reboot);
	}
#endif
	if (copybreak != COPYBREAK_DEFAULT) {
		if (copybreak == 0)
			printk(KERN_INFO "e1000: copybreak disabled\n");
		else
			printk(KERN_INFO "e1000: copybreak enabled for "
			       "packets <= %u bytes\n", copybreak);
	}
	return ret;
}

module_init(e1000_init_module);

/**
 * e1000_exit_module - Driver Exit Cleanup Routine
 *
 * e1000_exit_module is called just before the driver is removed
 * from memory.
 **/
static void __exit e1000_exit_module(void)
{
#ifdef USE_REBOOT_NOTIFIER
	unregister_reboot_notifier(&e1000_notifier_reboot);
#endif
	pci_unregister_driver(&e1000_driver);
}

module_exit(e1000_exit_module);

static int e1000_request_irq(struct e1000_adapter *adapter)
{
	struct net_device *netdev = adapter->netdev;
	int err = 0;

	if (adapter->flags & E1000_FLAG_HAS_MSI) {
		err = pci_enable_msi(adapter->pdev);
		if (!err)
			adapter->flags |= E1000_FLAG_MSI_ENABLED;
	}
    rt_stack_connect(netdev, &STACK_manager);
	if (adapter->flags & E1000_FLAG_MSI_ENABLED) {
		err = rtdm_irq_request(&adapter->irq_handle, adapter->pdev->irq, e1000_intr_msi,
528
				  0, netdev->name, netdev);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
529
530
531
532
533
534
535
536
537
538
539
540
		if (!err) {
			return err;
		} else {
			adapter->flags &= ~E1000_FLAG_MSI_ENABLED;
			pci_disable_msi(adapter->pdev);
		}
	}
	err = rtdm_irq_request(&adapter->irq_handle, adapter->pdev->irq,
			       e1000_intr, RTDM_IRQTYPE_SHARED, netdev->name,
			       netdev);
	if (err)
		DPRINTK(PROBE, ERR, "Unable to allocate interrupt Error: %d\n",
541
			err);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714

	return err;
}

static void e1000_free_irq(struct e1000_adapter *adapter)
{
	// struct net_device *netdev = adapter->netdev;

	rtdm_irq_free(&adapter->irq_handle);

	if (adapter->flags & E1000_FLAG_MSI_ENABLED) {
		pci_disable_msi(adapter->pdev);
		adapter->flags &= ~E1000_FLAG_MSI_ENABLED;
	}
}

/**
 * e1000_irq_disable - Mask off interrupt generation on the NIC
 * @adapter: board private structure
 **/
static void e1000_irq_disable(struct e1000_adapter *adapter)
{
	atomic_inc(&adapter->irq_sem);
	E1000_WRITE_REG(&adapter->hw, E1000_IMC, ~0);
	E1000_WRITE_FLUSH(&adapter->hw);
	synchronize_irq(adapter->pdev->irq);
}

/**
 * e1000_irq_enable - Enable default interrupt generation settings
 * @adapter: board private structure
 **/

static void e1000_irq_enable(struct e1000_adapter *adapter)
{
	if (likely(atomic_dec_and_test(&adapter->irq_sem))) {
		E1000_WRITE_REG(&adapter->hw, E1000_IMS, IMS_ENABLE_MASK);
		E1000_WRITE_FLUSH(&adapter->hw);
	}
}
#ifdef NETIF_F_HW_VLAN_TX

static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
{
	struct net_device *netdev = adapter->netdev;
	u16 vid = adapter->hw.mng_cookie.vlan_id;
	u16 old_vid = adapter->mng_vlan_id;
	if (adapter->vlgrp) {
		if (!vlan_group_get_device(adapter->vlgrp, vid)) {
			if (adapter->hw.mng_cookie.status &
				E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
				e1000_vlan_rx_add_vid(netdev, vid);
				adapter->mng_vlan_id = vid;
			} else {
				adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
			}

			if ((old_vid != (u16)E1000_MNG_VLAN_NONE) &&
					(vid != old_vid) &&
			    !vlan_group_get_device(adapter->vlgrp, old_vid))
				e1000_vlan_rx_kill_vid(netdev, old_vid);
		} else {
			adapter->mng_vlan_id = vid;
		}
	}
}
#endif

/**
 * e1000_release_hw_control - release control of the h/w to f/w
 * @adapter: address of board private structure
 *
 * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
 * For ASF and Pass Through versions of f/w this means that the
 * driver is no longer loaded. For AMT version (only with 82573) i
 * of the f/w this means that the network i/f is closed.
 *
 **/
static void e1000_release_hw_control(struct e1000_adapter *adapter)
{
	u32 ctrl_ext;
	u32 swsm;

	/* Let firmware taken over control of h/w */
	switch (adapter->hw.mac.type) {
	case e1000_82573:
		swsm = E1000_READ_REG(&adapter->hw, E1000_SWSM);
		E1000_WRITE_REG(&adapter->hw, E1000_SWSM,
				swsm & ~E1000_SWSM_DRV_LOAD);
		break;
	case e1000_82571:
	case e1000_82572:
	case e1000_80003es2lan:
	case e1000_ich8lan:
	case e1000_ich9lan:
		ctrl_ext = E1000_READ_REG(&adapter->hw, E1000_CTRL_EXT);
		E1000_WRITE_REG(&adapter->hw, E1000_CTRL_EXT,
				ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
		break;
	default:
		break;
	}
}

/**
 * e1000_get_hw_control - get control of the h/w from f/w
 * @adapter: address of board private structure
 *
 * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
 * For ASF and Pass Through versions of f/w this means that
 * the driver is loaded. For AMT version (only with 82573)
 * of the f/w this means that the network i/f is open.
 *
 **/
static void e1000_get_hw_control(struct e1000_adapter *adapter)
{
	u32 ctrl_ext;
	u32 swsm;

	/* Let firmware know the driver has taken over */
	switch (adapter->hw.mac.type) {
	case e1000_82573:
		swsm = E1000_READ_REG(&adapter->hw, E1000_SWSM);
		E1000_WRITE_REG(&adapter->hw, E1000_SWSM,
				swsm | E1000_SWSM_DRV_LOAD);
		break;
	case e1000_82571:
	case e1000_82572:
	case e1000_80003es2lan:
	case e1000_ich8lan:
	case e1000_ich9lan:
		ctrl_ext = E1000_READ_REG(&adapter->hw, E1000_CTRL_EXT);
		E1000_WRITE_REG(&adapter->hw, E1000_CTRL_EXT,
				ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
		break;
	default:
		break;
	}
}

static void e1000_init_manageability(struct e1000_adapter *adapter)
{
}

static void e1000_release_manageability(struct e1000_adapter *adapter)
{
}

/**
 * e1000_configure - configure the hardware for RX and TX
 * @adapter: private board structure
 **/
static void e1000_configure(struct e1000_adapter *adapter)
{
	struct net_device *netdev = adapter->netdev;
	int i;

	e1000_set_multi(netdev);

#ifdef NETIF_F_HW_VLAN_TX
	e1000_restore_vlan(adapter);
#endif
	e1000_init_manageability(adapter);

	e1000_configure_tx(adapter);
	e1000_setup_rctl(adapter);
	e1000_configure_rx(adapter);
	/* call E1000_DESC_UNUSED which always leaves
	 * at least 1 descriptor unused to make sure
	 * next_to_use != next_to_clean */
	for (i = 0; i < adapter->num_rx_queues; i++) {
		struct e1000_rx_ring *ring = &adapter->rx_ring[i];
		adapter->alloc_rx_buf(adapter, ring,
715
				      E1000_DESC_UNUSED(ring));
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
	}

#ifdef CONFIG_E1000_MQ
	e1000_setup_queue_mapping(adapter);
#endif

	// adapter->tx_queue_len = netdev->tx_queue_len;
}

static void e1000_napi_enable_all(struct e1000_adapter *adapter)
{
#ifdef CONFIG_E1000_NAPI
	int i;
	for (i = 0; i < adapter->num_rx_queues; i++)
		napi_enable(&adapter->rx_ring[i].napi);
#endif
}

static void e1000_napi_disable_all(struct e1000_adapter *adapter)
{
#ifdef CONFIG_E1000_NAPI
	int i;
	for (i = 0; i < adapter->num_rx_queues; i++)
		napi_disable(&adapter->rx_ring[i].napi);
#endif
}

int e1000_up(struct e1000_adapter *adapter)
{
	/* hardware has been reset, we need to reload some things */
	e1000_configure(adapter);

	clear_bit(__E1000_DOWN, &adapter->state);

	e1000_napi_enable_all(adapter);

	e1000_irq_enable(adapter);

	/* fire a link change interrupt to start the watchdog */
	// E1000_WRITE_REG(&adapter->hw, E1000_ICS, E1000_ICS_LSC);
	return 0;
}

759
760
761
762
763
764
765
766
767
768
769
770
static void e1000_down_and_stop(struct e1000_adapter *adapter)
{
	/* signal that we're down so the interrupt handler does not
	 * reschedule our watchdog timer */
	set_bit(__E1000_DOWN, &adapter->state);

	cancel_work_sync(&adapter->reset_task);
	cancel_delayed_work_sync(&adapter->watchdog_task);
	cancel_delayed_work_sync(&adapter->phy_info_task);
	cancel_delayed_work_sync(&adapter->fifo_stall_task);
}

Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
771
772
773
774
775
void e1000_down(struct e1000_adapter *adapter)
{
	struct net_device *netdev = adapter->netdev;
	u32 tctl, rctl;

776
	e1000_down_and_stop(adapter);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902

	/* disable receives in the hardware */
	rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL);
	E1000_WRITE_REG(&adapter->hw, E1000_RCTL, rctl & ~E1000_RCTL_EN);
	/* flush and sleep below */

#ifdef NETIF_F_LLTX
	rtnetif_stop_queue(netdev);
#else
	rtnetif_tx_disable(netdev);
#endif

	/* disable transmits in the hardware */
	tctl = E1000_READ_REG(&adapter->hw, E1000_TCTL);
	tctl &= ~E1000_TCTL_EN;
	E1000_WRITE_REG(&adapter->hw, E1000_TCTL, tctl);
	/* flush both disables and wait for them to finish */
	E1000_WRITE_FLUSH(&adapter->hw);
	msleep(10);

	e1000_napi_disable_all(adapter);

	e1000_irq_disable(adapter);

	// netdev->tx_queue_len = adapter->tx_queue_len;
	rtnetif_carrier_off(netdev);
	adapter->link_speed = 0;
	adapter->link_duplex = 0;

	e1000_reset(adapter);
	e1000_clean_all_tx_rings(adapter);
	e1000_clean_all_rx_rings(adapter);
}

void e1000_reinit_locked(struct e1000_adapter *adapter)
{
	WARN_ON(in_interrupt());
	while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
		msleep(1);
	e1000_down(adapter);
	e1000_up(adapter);
	clear_bit(__E1000_RESETTING, &adapter->state);
}

void e1000_reset(struct e1000_adapter *adapter)
{
	struct e1000_mac_info *mac = &adapter->hw.mac;
	struct e1000_fc_info *fc = &adapter->hw.fc;
	u32 pba = 0, tx_space, min_tx_space, min_rx_space;
	bool legacy_pba_adjust = FALSE;
	u16 hwm;

	/* Repartition Pba for greater than 9k mtu
	 * To take effect CTRL.RST is required.
	 */

	switch (mac->type) {
	case e1000_82542:
	case e1000_82543:
	case e1000_82544:
	case e1000_82540:
	case e1000_82541:
	case e1000_82541_rev_2:
		legacy_pba_adjust = TRUE;
		pba = E1000_PBA_48K;
		break;
	case e1000_82545:
	case e1000_82545_rev_3:
	case e1000_82546:
	case e1000_82546_rev_3:
		pba = E1000_PBA_48K;
		break;
	case e1000_82547:
	case e1000_82547_rev_2:
		legacy_pba_adjust = TRUE;
		pba = E1000_PBA_30K;
		break;
	case e1000_82571:
	case e1000_82572:
	case e1000_80003es2lan:
		pba = E1000_PBA_38K;
		break;
	case e1000_82573:
		pba = E1000_PBA_20K;
		break;
	case e1000_ich8lan:
		pba = E1000_PBA_8K;
		break;
	case e1000_ich9lan:
#define E1000_PBA_10K 0x000A
		pba = E1000_PBA_10K;
		break;
	case e1000_undefined:
	case e1000_num_macs:
		break;
	}

	if (legacy_pba_adjust == TRUE) {
		if (adapter->max_frame_size > E1000_RXBUFFER_8192)
			pba -= 8; /* allocate more FIFO for Tx */

		if (mac->type == e1000_82547) {
			adapter->tx_fifo_head = 0;
			adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
			adapter->tx_fifo_size =
				(E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
			atomic_set(&adapter->tx_fifo_stall, 0);
		}
	} else if (adapter->max_frame_size > ETH_FRAME_LEN + ETHERNET_FCS_SIZE) {
		/* adjust PBA for jumbo frames */
		E1000_WRITE_REG(&adapter->hw, E1000_PBA, pba);

		/* To maintain wire speed transmits, the Tx FIFO should be
		 * large enough to accommodate two full transmit packets,
		 * rounded up to the next 1KB and expressed in KB.  Likewise,
		 * the Rx FIFO should be large enough to accommodate at least
		 * one full receive packet and is similarly rounded up and
		 * expressed in KB. */
		pba = E1000_READ_REG(&adapter->hw, E1000_PBA);
		/* upper 16 bits has Tx packet buffer allocation size in KB */
		tx_space = pba >> 16;
		/* lower 16 bits has Rx packet buffer allocation size in KB */
		pba &= 0xffff;
		/* the tx fifo also stores 16 bytes of information about the tx
		 * but don't include ethernet FCS because hardware appends it */
		min_tx_space = (adapter->max_frame_size +
903
904
				sizeof(struct e1000_tx_desc) -
				ETHERNET_FCS_SIZE) * 2;
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
		min_tx_space = ALIGN(min_tx_space, 1024);
		min_tx_space >>= 10;
		/* software strips receive CRC, so leave room for it */
		min_rx_space = adapter->max_frame_size;
		min_rx_space = ALIGN(min_rx_space, 1024);
		min_rx_space >>= 10;

		/* If current Tx allocation is less than the min Tx FIFO size,
		 * and the min Tx FIFO size is less than the current Rx FIFO
		 * allocation, take space away from current Rx allocation */
		if (tx_space < min_tx_space &&
		    ((min_tx_space - tx_space) < pba)) {
			pba = pba - (min_tx_space - tx_space);

			/* PCI/PCIx hardware has PBA alignment constraints */
			switch (mac->type) {
			case e1000_82545 ... e1000_82546_rev_3:
				pba &= ~(E1000_PBA_8K - 1);
				break;
			default:
				break;
			}

			/* if short on rx space, rx wins and must trump tx
			 * adjustment or use Early Receive if available */
			if (pba < min_rx_space) {
				switch (mac->type) {
				case e1000_82573:
				case e1000_ich9lan:
					/* ERT enabled in e1000_configure_rx */
					break;
				default:
					pba = min_rx_space;
					break;
				}
			}
		}
	}

	E1000_WRITE_REG(&adapter->hw, E1000_PBA, pba);

	/* flow control settings */
	/* The high water mark must be low enough to fit one full frame
	 * (or the size used for early receive) above it in the Rx FIFO.
	 * Set it to the lower of:
	 * - 90% of the Rx FIFO size, and
	 * - the full Rx FIFO size minus the early receive size (for parts
	 *   with ERT support assuming ERT set to E1000_ERT_2048), or
	 * - the full Rx FIFO size minus one full frame */
	hwm = min(((pba << 10) * 9 / 10),
955
956
957
		  ((mac->type == e1000_82573 || mac->type == e1000_ich9lan) ?
		      (u16)((pba << 10) - (E1000_ERT_2048 << 3)) :
		      ((pba << 10) - adapter->max_frame_size)));
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023

	fc->high_water = hwm & 0xFFF8;	/* 8-byte granularity */
	fc->low_water = fc->high_water - 8;

	if (mac->type == e1000_80003es2lan)
		fc->pause_time = 0xFFFF;
	else
		fc->pause_time = E1000_FC_PAUSE_TIME;
	fc->send_xon = 1;
	fc->type = fc->original_type;

	/* Allow time for pending master requests to run */
	e1000_reset_hw(&adapter->hw);

	/* For 82573 and ICHx if AMT is enabled, let the firmware know
	 * that the network interface is in control */
	if (((adapter->hw.mac.type == e1000_82573) ||
	     (adapter->hw.mac.type == e1000_ich8lan) ||
	     (adapter->hw.mac.type == e1000_ich9lan)) &&
	    e1000_check_mng_mode(&adapter->hw))
		e1000_get_hw_control(adapter);

	if (mac->type >= e1000_82544)
		E1000_WRITE_REG(&adapter->hw, E1000_WUC, 0);

	if (e1000_init_hw(&adapter->hw))
		DPRINTK(PROBE, ERR, "Hardware Error\n");
#ifdef NETIF_F_HW_VLAN_TX
	e1000_update_mng_vlan(adapter);
#endif
	/* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */
	if (mac->type >= e1000_82544 &&
	    mac->type <= e1000_82547_rev_2 &&
	    mac->autoneg == 1 &&
	    adapter->hw.phy.autoneg_advertised == ADVERTISE_1000_FULL) {
		u32 ctrl = E1000_READ_REG(&adapter->hw, E1000_CTRL);
		/* clear phy power management bit if we are in gig only mode,
		 * which if enabled will attempt negotiation to 100Mb, which
		 * can cause a loss of link at power off or driver unload */
		ctrl &= ~E1000_CTRL_SWDPIN3;
		E1000_WRITE_REG(&adapter->hw, E1000_CTRL, ctrl);
	}

#if defined(CONFIG_PPC64) || defined(CONFIG_PPC)
#define E1000_GCR_DISABLE_TIMEOUT_MECHANISM 0x80000000
	if (adapter->hw.mac.type == e1000_82571) {
		/* work around pSeries hardware by disabling timeouts */
		u32 gcr = E1000_READ_REG(&adapter->hw, E1000_GCR);
		gcr |= E1000_GCR_DISABLE_TIMEOUT_MECHANISM;
		E1000_WRITE_REG(&adapter->hw, E1000_GCR, gcr);
	}
#endif

	/* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
	E1000_WRITE_REG(&adapter->hw, E1000_VET, ETHERNET_IEEE_VLAN_TYPE);

	e1000_reset_adaptive(&adapter->hw);
	e1000_get_phy_info(&adapter->hw);

	if (!(adapter->flags & E1000_FLAG_SMART_POWER_DOWN) &&
	    (mac->type == e1000_82571 || mac->type == e1000_82572)) {
		u16 phy_data = 0;
		/* speed up time to link by disabling smart power down, ignore
		 * the return value of this function because there is nothing
		 * different we would do if it failed */
		e1000_read_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT,
1024
				   &phy_data);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1025
1026
		phy_data &= ~IGP02E1000_PM_SPD;
		e1000_write_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT,
1027
				    phy_data);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
	}

	e1000_release_manageability(adapter);
}

/**
 * e1000_probe - Device Initialization Routine
 * @pdev: PCI device information struct
 * @ent: entry in e1000_pci_tbl
 *
 * Returns 0 on success, negative on failure
 *
 * e1000_probe initializes an adapter identified by a pci_dev structure.
 * The OS initialization, configuring of the adapter private structure,
 * and a hardware reset occur.
 **/
static int e1000_probe(struct pci_dev *pdev,
1045
				 const struct pci_device_id *ent)
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
{
	struct net_device *netdev;
	struct e1000_adapter *adapter;

	static int cards_found = 0;
	static int global_quad_port_a = 0; /* global ksp3 port a indication */
	int i, err, pci_using_dac;
	u16 eeprom_data = 0;
	u16 eeprom_apme_mask = E1000_EEPROM_APME;

    if (cards[cards_found++] == 0)
    {
1058
	return -ENODEV;
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
    }

	if ((err = pci_enable_device(pdev)))
		return err;

	if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) &&
	    !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) {
		pci_using_dac = 1;
	} else {
		if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) &&
		    (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) {
			E1000_ERR("No usable DMA configuration, aborting\n");
			goto err_dma;
		}
		pci_using_dac = 0;
	}

	if ((err = pci_request_regions(pdev, e1000_driver_name)))
		goto err_pci_reg;

	pci_set_master(pdev);

	err = -ENOMEM;
#ifdef CONFIG_E1000_MQ
	netdev = rt_alloc_etherdev(sizeof(struct e1000_adapter) +
1084
1085
							(sizeof(struct net_device_subqueue) *
								E1000_MAX_TX_QUEUES), 16);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1086
#else
1087
1088
	netdev = rt_alloc_etherdev(sizeof(struct e1000_adapter),
				2 * E1000_DEFAULT_RXD + E1000_DEFAULT_TXD);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
#endif
	if (!netdev)
		goto err_alloc_etherdev;

    memset(netdev->priv, 0, sizeof(struct e1000_adapter));
    rt_rtdev_connect(netdev, &RTDEV_manager);

	// SET_NETDEV_DEV(netdev, &pdev->dev);
    netdev->vers = RTDEV_VERS_2_0;

	pci_set_drvdata(pdev, netdev);
	adapter = netdev->priv;
	adapter->netdev = netdev;
	adapter->pdev = pdev;
	adapter->hw.back = adapter;
1104
	adapter->msg_enable = (1 << local_debug) - 1;
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1105
1106
1107

	err = -EIO;
	adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, BAR_0),
1108
				      pci_resource_len(pdev, BAR_0));
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
	if (!adapter->hw.hw_addr)
		goto err_ioremap;

	for (i = BAR_1; i <= BAR_5; i++) {
		if (pci_resource_len(pdev, i) == 0)
			continue;
		if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
			adapter->hw.io_base = pci_resource_start(pdev, i);
			break;
		}
	}

	netdev->open = &e1000_open;
	netdev->stop = &e1000_close;
	netdev->hard_start_xmit = &e1000_xmit_frame;
#ifdef CONFIG_E1000_MQ
	netdev->hard_start_subqueue_xmit = &e1000_subqueue_xmit_frame;
#endif
#ifdef HAVE_TX_TIMEOUT
	netdev->tx_timeout = &e1000_tx_timeout;
	netdev->watchdog_timeo = 5 * HZ;
#endif
#ifdef NETIF_F_HW_VLAN_TX
	netdev->vlan_rx_register = e1000_vlan_rx_register;
	netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid;
	netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid;
#endif
#ifdef CONFIG_NET_POLL_CONTROLLER
	netdev->poll_controller = e1000_netpoll;
#endif
	strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);

	adapter->bd_number = cards_found;

	/* setup the private structure */
	if ((err = e1000_sw_init(adapter)))
		goto err_sw_init;

	err = -EIO;
	/* Flash BAR mapping must happen after e1000_sw_init
	 * because it depends on mac.type */
	if (((adapter->hw.mac.type == e1000_ich8lan) ||
	     (adapter->hw.mac.type == e1000_ich9lan)) &&
	   (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
		adapter->hw.flash_address = ioremap(pci_resource_start(pdev, 1),
1154
						    pci_resource_len(pdev, 1));
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
		if (!adapter->hw.flash_address)
			goto err_flashmap;
	}

	if ((err = e1000_init_mac_params(&adapter->hw)))
		goto err_hw_init;

	if ((err = e1000_init_nvm_params(&adapter->hw)))
		goto err_hw_init;

	if ((err = e1000_init_phy_params(&adapter->hw)))
		goto err_hw_init;

	e1000_get_bus_info(&adapter->hw);

	e1000_init_script_state_82541(&adapter->hw, TRUE);
	e1000_set_tbi_compatibility_82543(&adapter->hw, TRUE);

	adapter->hw.phy.autoneg_wait_to_complete = FALSE;
	adapter->hw.mac.adaptive_ifs = FALSE;

	/* Copper options */

	if (adapter->hw.phy.media_type == e1000_media_type_copper) {
		adapter->hw.phy.mdix = AUTO_ALL_MODES;
		adapter->hw.phy.disable_polarity_correction = FALSE;
		adapter->hw.phy.ms_type = E1000_MASTER_SLAVE;
	}

	if (e1000_check_reset_block(&adapter->hw))
		DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n");

#ifdef MAX_SKB_FRAGS
	if (adapter->hw.mac.type >= e1000_82543) {
#ifdef NETIF_F_HW_VLAN_TX
		netdev->features = NETIF_F_SG |
				   NETIF_F_HW_CSUM |
				   NETIF_F_HW_VLAN_TX |
				   NETIF_F_HW_VLAN_RX |
				   NETIF_F_HW_VLAN_FILTER;
		if ((adapter->hw.mac.type == e1000_ich8lan) ||
		    (adapter->hw.mac.type == e1000_ich9lan))
			netdev->features &= ~NETIF_F_HW_VLAN_FILTER;
#else
		netdev->features = NETIF_F_SG | NETIF_F_HW_CSUM;
#endif
	}

#ifdef NETIF_F_TSO
	if ((adapter->hw.mac.type >= e1000_82544) &&
	   (adapter->hw.mac.type != e1000_82547)) {
		adapter->flags |= E1000_FLAG_HAS_TSO;
		netdev->features |= NETIF_F_TSO;
	}

#ifdef NETIF_F_TSO6
	if (adapter->hw.mac.type > e1000_82547_rev_2) {
		adapter->flags |= E1000_FLAG_HAS_TSO6;
		netdev->features |= NETIF_F_TSO6;
	}
#endif
#endif
	if (pci_using_dac)
		netdev->features |= NETIF_F_HIGHDMA;

#endif
#ifdef NETIF_F_LLTX
	netdev->features |= NETIF_F_LLTX;
#endif

	/* Hardware features, flags and workarounds */
	if (adapter->hw.mac.type >= e1000_82571) {
		adapter->flags |= E1000_FLAG_INT_ASSERT_AUTO_MASK;
		adapter->flags |= E1000_FLAG_HAS_MSI;
		adapter->flags |= E1000_FLAG_HAS_MANC2H;
	}

	if (adapter->hw.mac.type >= e1000_82540) {
		adapter->flags |= E1000_FLAG_HAS_SMBUS;
		adapter->flags |= E1000_FLAG_HAS_INTR_MODERATION;
	}

	if (adapter->hw.mac.type == e1000_82543)
		adapter->flags |= E1000_FLAG_BAD_TX_CARRIER_STATS_FD;

	/* In rare occasions, ESB2 systems would end up started without
	 * the RX unit being turned on. */
	if (adapter->hw.mac.type == e1000_80003es2lan)
		adapter->flags |= E1000_FLAG_RX_NEEDS_RESTART;

	adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw);

	/* before reading the NVM, reset the controller to
	 * put the device in a known good starting state */

	e1000_reset_hw(&adapter->hw);

	/* make sure we don't intercept ARP packets until we're up */
	e1000_release_manageability(adapter);

	/* make sure the NVM is good */

	if (e1000_validate_nvm_checksum(&adapter->hw) < 0) {
		DPRINTK(PROBE, ERR, "The NVM Checksum Is Not Valid\n");
		err = -EIO;
		goto err_eeprom;
	}

	/* copy the MAC address out of the NVM */

	if (e1000_read_mac_addr(&adapter->hw))
		DPRINTK(PROBE, ERR, "NVM Read Error\n");
	memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
#ifdef ETHTOOL_GPERMADDR
	memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);

	if (!is_valid_ether_addr(netdev->perm_addr)) {
#else
	if (!is_valid_ether_addr(netdev->dev_addr)) {
#endif
		DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
		err = -EIO;
		goto err_eeprom;
	}

1280
1281
1282
1283
	INIT_DELAYED_WORK(&adapter->watchdog_task, e1000_watchdog_task);
	INIT_DELAYED_WORK(&adapter->fifo_stall_task,
			  e1000_82547_tx_fifo_stall_task);
	INIT_DELAYED_WORK(&adapter->phy_info_task, e1000_update_phy_info_task);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
	INIT_WORK(&adapter->reset_task, e1000_reset_task);

	e1000_check_options(adapter);

	/* Initial Wake on LAN setting
	 * If APM wake is enabled in the EEPROM,
	 * enable the ACPI Magic Packet filter
	 */

	switch (adapter->hw.mac.type) {
	case e1000_82542:
	case e1000_82543:
		break;
	case e1000_82544:
		e1000_read_nvm(&adapter->hw,
			NVM_INIT_CONTROL2_REG, 1, &eeprom_data);
		eeprom_apme_mask = E1000_EEPROM_82544_APM;
		break;
	case e1000_ich8lan:
	case e1000_ich9lan:
		/* APME bit in EEPROM is mapped to WUC.APME */
		eeprom_data = E1000_READ_REG(&adapter->hw, E1000_WUC);
		eeprom_apme_mask = E1000_WUC_APME;
		break;
	case e1000_82546:
	case e1000_82546_rev_3:
	case e1000_82571:
	case e1000_80003es2lan:
		if (adapter->hw.bus.func == 1) {
			e1000_read_nvm(&adapter->hw,
				NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
			break;
		}
		/* Fall Through */
	default:
		e1000_read_nvm(&adapter->hw,
			NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
		break;
	}
	if (eeprom_data & eeprom_apme_mask)
		adapter->eeprom_wol |= E1000_WUFC_MAG;

	/* now that we have the eeprom settings, apply the special cases
	 * where the eeprom may be wrong or the board simply won't support
	 * wake on lan on a particular port */
	switch (pdev->device) {
	case E1000_DEV_ID_82546GB_PCIE:
	case E1000_DEV_ID_82571EB_SERDES_QUAD:
		adapter->eeprom_wol = 0;
		break;
	case E1000_DEV_ID_82546EB_FIBER:
	case E1000_DEV_ID_82546GB_FIBER:
	case E1000_DEV_ID_82571EB_FIBER:
		/* Wake events only supported on port A for dual fiber
		 * regardless of eeprom setting */
		if (E1000_READ_REG(&adapter->hw, E1000_STATUS) &
		    E1000_STATUS_FUNC_1)
			adapter->eeprom_wol = 0;
		break;
	case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
	case E1000_DEV_ID_82571EB_QUAD_COPPER:
	case E1000_DEV_ID_82571EB_QUAD_FIBER:
	case E1000_DEV_ID_82571EB_QUAD_COPPER_LP:
	case E1000_DEV_ID_82571PT_QUAD_COPPER:
		/* if quad port adapter, disable WoL on all but port A */
		if (global_quad_port_a != 0)
			adapter->eeprom_wol = 0;
		else
			adapter->flags |= E1000_FLAG_QUAD_PORT_A;
		/* Reset for multiple quad port adapters */
		if (++global_quad_port_a == 4)
			global_quad_port_a = 0;
		break;
	}

	/* initialize the wol settings based on the eeprom settings */
	adapter->wol = adapter->eeprom_wol;

	/* print bus type/speed/width info */
	{
	struct e1000_hw *hw = &adapter->hw;
	DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ",
		((hw->bus.type == e1000_bus_type_pcix) ? "-X" :
		 (hw->bus.type == e1000_bus_type_pci_express ? " Express":"")),
		((hw->bus.speed == e1000_bus_speed_2500) ? "2.5Gb/s" :
		 (hw->bus.speed == e1000_bus_speed_133) ? "133MHz" :
		 (hw->bus.speed == e1000_bus_speed_120) ? "120MHz" :
		 (hw->bus.speed == e1000_bus_speed_100) ? "100MHz" :
		 (hw->bus.speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"),
		((hw->bus.width == e1000_bus_width_64) ? "64-bit" :
		 (hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
		 (hw->bus.width == e1000_bus_width_pcie_x1) ? "Width x1" :
		 "32-bit"));
	}

	for (i = 0; i < 6; i++)
		printk("%2.2x%c", netdev->dev_addr[i], i == 5 ? '\n' : ':');

	/* reset the hardware with the new settings */
	e1000_reset(adapter);

	/* If the controller is 82573 or ICH and f/w is AMT, do not set
	 * DRV_LOAD until the interface is up.  For all other cases,
	 * let the f/w know that the h/w is now under the control
	 * of the driver. */
	if (((adapter->hw.mac.type != e1000_82573) &&
	     (adapter->hw.mac.type != e1000_ich8lan) &&
	     (adapter->hw.mac.type != e1000_ich9lan)) ||
	    !e1000_check_mng_mode(&adapter->hw))
		e1000_get_hw_control(adapter);

	/* tell the stack to leave us alone until e1000_open() is called */
	rtnetif_carrier_off(netdev);
	rtnetif_stop_queue(netdev);

	strcpy(netdev->name, "rteth%d");
	err = rt_register_rtnetdev(netdev);
	if (err)
		goto err_register;

	DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n");

	cards_found++;
	return 0;

err_register:
err_hw_init:
	e1000_release_hw_control(adapter);
err_eeprom:
	if (!e1000_check_reset_block(&adapter->hw))
		e1000_phy_hw_reset(&adapter->hw);

	if (adapter->hw.flash_address)
		iounmap(adapter->hw.flash_address);

	e1000_remove_device(&adapter->hw);
err_flashmap:
	kfree(adapter->tx_ring);
	kfree(adapter->rx_ring);
err_sw_init:
	iounmap(adapter->hw.hw_addr);
err_ioremap:
	rtdev_free(netdev);
err_alloc_etherdev:
	pci_release_regions(pdev);
err_pci_reg:
err_dma:
	pci_disable_device(pdev);
	return err;
}

/**
 * e1000_remove - Device Removal Routine
 * @pdev: PCI device information struct
 *
 * e1000_remove is called by the PCI subsystem to alert the driver
 * that it should release a PCI device.  The could be caused by a
 * Hot-Plug event, or because the driver is going to be removed from
 * memory.
 **/
static void e1000_remove(struct pci_dev *pdev)
{
	struct net_device *netdev = pci_get_drvdata(pdev);
	struct e1000_adapter *adapter = netdev_priv(netdev);

1449
	e1000_down_and_stop(adapter);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554

	e1000_release_manageability(adapter);

	/* Release control of h/w to f/w.  If f/w is AMT enabled, this
	 * would have already happened in close and is redundant. */
	e1000_release_hw_control(adapter);

	rt_unregister_rtnetdev(netdev);

	if (!e1000_check_reset_block(&adapter->hw))
		e1000_phy_hw_reset(&adapter->hw);

	e1000_remove_device(&adapter->hw);

	kfree(adapter->tx_ring);
	kfree(adapter->rx_ring);

	iounmap(adapter->hw.hw_addr);
	if (adapter->hw.flash_address)
		iounmap(adapter->hw.flash_address);
	pci_release_regions(pdev);

	rtdev_free(netdev);

	pci_disable_device(pdev);
}

/**
 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
 * @adapter: board private structure to initialize
 *
 * e1000_sw_init initializes the Adapter private data structure.
 * Fields are initialized based on PCI device information and
 * OS network device settings (MTU size).
 **/
static int e1000_sw_init(struct e1000_adapter *adapter)
{
	struct e1000_hw *hw = &adapter->hw;
	struct net_device *netdev = adapter->netdev;
	struct pci_dev *pdev = adapter->pdev;
#ifdef CONFIG_E1000_NAPI
	int i;
#endif

	/* PCI config space info */

	hw->vendor_id = pdev->vendor;
	hw->device_id = pdev->device;
	hw->subsystem_vendor_id = pdev->subsystem_vendor;
	hw->subsystem_device_id = pdev->subsystem_device;

	pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);

	pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word);

	adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
	adapter->rx_ps_bsize0 = E1000_RXBUFFER_128;
	adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETHERNET_FCS_SIZE;
	adapter->min_frame_size = ETH_ZLEN + ETHERNET_FCS_SIZE;

	/* Initialize the hardware-specific values */
	if (e1000_setup_init_funcs(hw, FALSE)) {
		DPRINTK(PROBE, ERR, "Hardware Initialization Failure\n");
		return -EIO;
	}

#ifdef CONFIG_E1000_MQ
	/* Number of supported queues.
	 * TODO: It's assumed num_rx_queues >= num_tx_queues, since multi-rx
	 * queues are much more interesting.  Is it worth coding for the
	 * possibility (however improbable) of num_tx_queues > num_rx_queues?
	 */
	switch (hw->mac.type) {
	case e1000_82571:
	case e1000_82572:
	case e1000_82573:
	case e1000_80003es2lan:
		adapter->num_tx_queues = 2;
		adapter->num_rx_queues = 2;
		break;
	case e1000_ich8lan:
	case e1000_ich9lan:
		if ((adapter->hw.device_id == E1000_DEV_ID_ICH8_IGP_AMT) ||
		    (adapter->hw.device_id == E1000_DEV_ID_ICH8_IGP_M_AMT) ||
		    (adapter->hw.device_id == E1000_DEV_ID_ICH9_IGP_AMT)) {
			adapter->num_tx_queues = 2;
			adapter->num_rx_queues = 2;
			break;
		}
		/* Fall through - remaining ICH SKUs do not support MQ */
	default:
		/* All hardware before 82571 only have 1 queue each for Rx/Tx.
		 * However, the 82571 family does not have MSI-X, so multi-
		 * queue isn't enabled.
		 * It'd be wise not to mess with this default case. :) */
		adapter->num_tx_queues = 1;
		adapter->num_rx_queues = 1;
		netdev->egress_subqueue_count = 0;
		break;
	}
	adapter->num_rx_queues = min(adapter->num_rx_queues, num_online_cpus());
	adapter->num_tx_queues = min(adapter->num_tx_queues, num_online_cpus());

	if ((adapter->num_tx_queues > 1) || (adapter->num_rx_queues > 1)) {
		netdev->egress_subqueue = (struct net_device_subqueue *)
1555
1556
					   ((void *)adapter +
					    sizeof(struct e1000_adapter));
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1557
1558
		netdev->egress_subqueue_count = adapter->num_tx_queues;
		DPRINTK(DRV, INFO, "Multiqueue Enabled: RX queues = %u, "
1559
1560
			"TX queues = %u\n", adapter->num_rx_queues,
			adapter->num_tx_queues);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
	}
#else
	adapter->num_tx_queues = 1;
	adapter->num_rx_queues = 1;
#endif

	if (e1000_alloc_queues(adapter)) {
		DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n");
		return -ENOMEM;
	}

#ifdef CONFIG_E1000_NAPI
	for (i = 0; i < adapter->num_rx_queues; i++) {
		struct e1000_rx_ring *rx_ring = &adapter->rx_ring[i];
		netif_napi_add(adapter->netdev, &rx_ring->napi, e1000_poll, 64);
	}
	rtdm_lock_init(&adapter->tx_queue_lock);
#ifdef CONFIG_E1000_MQ
	for (i = 0; i < adapter->num_tx_queues; i++)
		rtdm_lock_init(&adapter->tx_ring[i].tx_queue_lock);
#endif
#endif

	/* Explicitly disable IRQ since the NIC can be in any state. */
	atomic_set(&adapter->irq_sem, 0);
	e1000_irq_disable(adapter);

	rtdm_lock_init(&adapter->stats_lock);

	set_bit(__E1000_DOWN, &adapter->state);
	return 0;
}

/**
 * e1000_alloc_queues - Allocate memory for all rings
 * @adapter: board private structure to initialize
 **/
static int e1000_alloc_queues(struct e1000_adapter *adapter)
{
	adapter->tx_ring = kcalloc(adapter->num_tx_queues,
1601
				   sizeof(struct e1000_tx_ring), GFP_KERNEL);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1602
1603
1604
1605
	if (!adapter->tx_ring)
		return -ENOMEM;

	adapter->rx_ring = kcalloc(adapter->num_rx_queues,
1606
				   sizeof(struct e1000_rx_ring), GFP_KERNEL);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
	if (!adapter->rx_ring) {
		kfree(adapter->tx_ring);
		return -ENOMEM;
	}

#ifdef CONFIG_E1000_MQ
	adapter->cpu_tx_ring = alloc_percpu(struct e1000_tx_ring *);
#endif

	return E1000_SUCCESS;
}

#ifdef CONFIG_E1000_MQ
static void e1000_setup_queue_mapping(struct e1000_adapter *adapter)
{
	int i, cpu;

	lock_cpu_hotplug();
	i = 0;
	for_each_online_cpu(cpu) {
		*per_cpu_ptr(adapter->cpu_tx_ring, cpu) =
1628
			     &adapter->tx_ring[i % adapter->num_tx_queues];
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
		i++;
	}
	unlock_cpu_hotplug();
}
#endif

/**
 * e1000_intr_msi_test - Interrupt Handler
 * @irq: interrupt number
 * @data: pointer to a network interface device structure
 **/
static irqreturn_t e1000_intr_msi_test(int irq, void *data)
{
	struct net_device *netdev = data;
	struct e1000_adapter *adapter = netdev_priv(netdev);

	u32 icr = E1000_READ_REG(&adapter->hw, E1000_ICR);
	DPRINTK(HW,INFO, "icr is %08X\n", icr);
	if (icr & E1000_ICR_RXSEQ) {
		adapter->flags |= E1000_FLAG_HAS_MSI;
		wmb();
	}
1651

Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
	return IRQ_HANDLED;
}

/**
 * e1000_test_msi_interrupt - Returns 0 for successful test
 * @adapter: board private struct
 *
 * code flow taken from tg3.c
 **/
static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
{
	struct net_device *netdev = adapter->netdev;
	int err;

	/* poll_enable hasn't been called yet, so don't need disable */
	/* clear any pending events */
	E1000_READ_REG(&adapter->hw, E1000_ICR);
1669

Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1670
1671
1672
1673
1674
	/* free the real vector and request a test handler */
	e1000_free_irq(adapter);

	err = pci_enable_msi(adapter->pdev);
	err = request_irq(adapter->pdev->irq, &e1000_intr_msi_test, 0,
1675
			  netdev->name, netdev);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
	if (err) {
		pci_disable_msi(adapter->pdev);
		goto msi_test_failed;
	}

	/* our temporary test variable */
	adapter->flags &= ~E1000_FLAG_HAS_MSI;
	wmb();

	e1000_irq_enable(adapter);

	/* fire an unusual interrupt on the test handler */
	E1000_WRITE_REG(&adapter->hw, E1000_ICS, E1000_ICS_RXSEQ);
	E1000_WRITE_FLUSH(&adapter->hw);
	msleep(50);

	e1000_irq_disable(adapter);

	rmb();
	if (!(adapter->flags & E1000_FLAG_HAS_MSI)) {
		adapter->flags |= E1000_FLAG_HAS_MSI;
		err = -EIO;
		DPRINTK(HW, INFO, "MSI interrupt test failed!\n");
	}

	free_irq(adapter->pdev->irq, netdev);
	pci_disable_msi(adapter->pdev);

	if (err == -EIO)
		goto msi_test_failed;
1706

Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
	/* okay so the test worked, restore settings */
	DPRINTK(HW, INFO, "MSI interrupt test succeeded!\n");
msi_test_failed:
	/* restore the original vector, even if it failed */
	e1000_request_irq(adapter);
	return err;
}

/**
 * e1000_test_msi - Returns 0 if MSI test succeeds and INTx mode is restored
 * @adapter: board private struct
 *
 * code flow taken from tg3.c, called with e1000 interrupts disabled.
 **/
static int e1000_test_msi(struct e1000_adapter *adapter)
{
	int err;
	u16 pci_cmd;

	if (!(adapter->flags & E1000_FLAG_MSI_ENABLED) ||
	    !(adapter->flags & E1000_FLAG_HAS_MSI))
		return 0;

	/* disable SERR in case the MSI write causes a master abort */
	pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
	pci_write_config_word(adapter->pdev, PCI_COMMAND,
1733
			      pci_cmd & ~PCI_COMMAND_SERR);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749

	err = e1000_test_msi_interrupt(adapter);

	/* restore previous setting of command word */
	pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);

	/* success ! */
	if (!err)
		return 0;

	/* EIO means MSI test failed */
	if (err != -EIO)
		return err;

	/* back to INTx mode */
	DPRINTK(PROBE, WARNING, "MSI interrupt test failed, using legacy "
1750
		"interrupt.\n");
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835

	e1000_free_irq(adapter);
	adapter->flags &= ~E1000_FLAG_HAS_MSI;

	err = e1000_request_irq(adapter);

	return err;
}

/**
 * e1000_open - Called when a network interface is made active
 * @netdev: network interface device structure
 *
 * Returns 0 on success, negative value on failure
 *
 * The open entry point is called when a network interface is made
 * active by the system (IFF_UP).  At this point all resources needed
 * for transmit and receive operations are allocated, the interrupt
 * handler is registered with the OS, the watchdog timer is started,
 * and the stack is notified that the interface is ready.
 **/
static int e1000_open(struct net_device *netdev)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);
	int err;
	/* disallow open during test */
	if (test_bit(__E1000_TESTING, &adapter->state))
		return -EBUSY;

	/* allocate transmit descriptors */
	err = e1000_setup_all_tx_resources(adapter);
	if (err)
		goto err_setup_tx;

	/* allocate receive descriptors */
	err = e1000_setup_all_rx_resources(adapter);
	if (err)
		goto err_setup_rx;

	if (adapter->hw.phy.media_type == e1000_media_type_copper) {
		e1000_power_up_phy(&adapter->hw);
		e1000_setup_link(&adapter->hw);
	}

#ifdef NETIF_F_HW_VLAN_TX
	adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
	if ((adapter->hw.mng_cookie.status &
	     E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) {
		e1000_update_mng_vlan(adapter);
	}
#endif

	/* For 82573 and ICHx if AMT is enabled, let the firmware know
	 * that the network interface is now open */
	if (((adapter->hw.mac.type == e1000_82573) ||
	     (adapter->hw.mac.type == e1000_ich8lan) ||
	     (adapter->hw.mac.type == e1000_ich9lan)) &&
	    e1000_check_mng_mode(&adapter->hw))
		e1000_get_hw_control(adapter);

	/* before we allocate an interrupt, we must be ready to handle it.
	 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
	 * as soon as we call pci_request_irq, so we have to setup our
	 * clean_rx handler before we do so.  */
	e1000_configure(adapter);


	err = e1000_request_irq(adapter);
	if (err)
		goto err_req_irq;

	/* work around PCIe errata with MSI interrupts causing some chipsets to
	 * ignore e1000 MSI messages, which means we need to test our MSI
	 * interrupt now */
	err = e1000_test_msi(adapter);
	if (err) {
		DPRINTK(PROBE, ERR, "Interrupt allocation failed\n");
		goto err_req_irq;
	}

	/* From here on the code is the same as e1000_up() */
	clear_bit(__E1000_DOWN, &adapter->state);

	e1000_napi_enable_all(adapter);

1836
	schedule_delayed_work(&adapter->watchdog_task, 1);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
	e1000_irq_enable(adapter);

	/* fire a link status change interrupt to start the watchdog */
	E1000_WRITE_REG(&adapter->hw, E1000_ICS, E1000_ICS_LSC);

	return E1000_SUCCESS;

err_req_irq:
	e1000_release_hw_control(adapter);
	/* Power down the PHY so no link is implied when interface is down *
	 * The PHY cannot be powered down if any of the following is TRUE *
	 * (a) WoL is enabled
	 * (b) AMT is active
	 * (c) SoL/IDER session is active */
	if (!adapter->wol && adapter->hw.mac.type >= e1000_82540 &&
	   adapter->hw.phy.media_type == e1000_media_type_copper)
		e1000_power_down_phy(&adapter->hw);
	e1000_free_all_rx_resources(adapter);
err_setup_rx:
	e1000_free_all_tx_resources(adapter);
err_setup_tx:
	e1000_reset(adapter);

	return err;
}

/**
 * e1000_close - Disables a network interface
 * @netdev: network interface device structure
 *
 * Returns 0, this is not allowed to fail
 *
 * The close entry point is called when an interface is de-activated
 * by the OS.  The hardware is still under the drivers control, but
 * needs to be disabled.  A global MAC reset is issued to stop the
 * hardware, and all transmit and receive resources are freed.
 **/
static int e1000_close(struct net_device *netdev)
{
	struct e1000_adapter *adapter = netdev_priv(netdev);

	WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
	e1000_down(adapter);
	/* Power down the PHY so no link is implied when interface is down *
	 * The PHY cannot be powered down if any of the following is TRUE *
	 * (a) WoL is enabled
	 * (b) AMT is active
	 * (c) SoL/IDER session is active */
	if (!adapter->wol && adapter->hw.mac.type >= e1000_82540 &&
	   adapter->hw.phy.media_type == e1000_media_type_copper)
		e1000_power_down_phy(&adapter->hw);
	e1000_free_irq(adapter);

	e1000_free_all_tx_resources(adapter);
	e1000_free_all_rx_resources(adapter);

#ifdef NETIF_F_HW_VLAN_TX
	/* kill manageability vlan ID if supported, but not if a vlan with
	 * the same ID is registered on the host OS (let 8021q kill it) */
	if ((adapter->hw.mng_cookie.status &
			  E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
	     !(adapter->vlgrp &&
	       vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) {
		e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
	}
#endif

	/* For 82573 and ICHx if AMT is enabled, let the firmware know
	 * that the network interface is now closed */
	if (((adapter->hw.mac.type == e1000_82573) ||
	     (adapter->hw.mac.type == e1000_ich8lan) ||
	     (adapter->hw.mac.type == e1000_ich9lan)) &&
	    e1000_check_mng_mode(&adapter->hw))
		e1000_release_hw_control(adapter);

	return 0;
}

/**
 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
 * @adapter: address of board private structure
 * @start: address of beginning of memory
 * @len: length of memory
 **/
static bool e1000_check_64k_bound(struct e1000_adapter *adapter,
1922
				       void *start, unsigned long len)
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
{
	unsigned long begin = (unsigned long) start;
	unsigned long end = begin + len;

	/* First rev 82545 and 82546 need to not allow any memory
	 * write location to cross 64k boundary due to errata 23 */
	if (adapter->hw.mac.type == e1000_82545 ||
	    adapter->hw.mac.type == e1000_82546) {
		return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE;
	}

	return TRUE;
}

/**
 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
 * @adapter: board private structure
 * @tx_ring:    tx descriptor ring (for a specific queue) to setup
 *
 * Return 0 on success, negative on failure
 **/
static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
1945
				    struct e1000_tx_ring *tx_ring)
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
{
	struct pci_dev *pdev = adapter->pdev;
	int size;

	size = sizeof(struct e1000_buffer) * tx_ring->count;
	tx_ring->buffer_info = vmalloc(size);
	if (!tx_ring->buffer_info) {
		DPRINTK(PROBE, ERR,
		"Unable to allocate memory for the transmit descriptor ring\n");
		return -ENOMEM;
	}
	memset(tx_ring->buffer_info, 0, size);

	/* round up to nearest 4K */

	tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
	tx_ring->size = ALIGN(tx_ring->size, 4096);

	tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size,
1965
					     &tx_ring->dma);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
	if (!tx_ring->desc) {
setup_tx_desc_die:
		vfree(tx_ring->buffer_info);
		DPRINTK(PROBE, ERR,
		"Unable to allocate memory for the transmit descriptor ring\n");
		return -ENOMEM;
	}

	/* Fix for errata 23, can't cross 64kB boundary */
	if (!e1000_check_64k_bound(adapter, tx_ring->desc, tx_ring->size)) {
		void *olddesc = tx_ring->desc;
		dma_addr_t olddma = tx_ring->dma;
		DPRINTK(TX_ERR, ERR, "tx_ring align check failed: %u bytes "
				     "at %p\n", tx_ring->size, tx_ring->desc);
		/* Try again, without freeing the previous */
		tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size,
1982
						     &tx_ring->dma);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1983
1984
1985
		/* Failed allocation, critical failure */
		if (!tx_ring->desc) {
			pci_free_consistent(pdev, tx_ring->size, olddesc,
1986
					    olddma);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1987
1988
1989
1990
			goto setup_tx_desc_die;
		}

		if (!e1000_check_64k_bound(adapter, tx_ring->desc,
1991
					   tx_ring->size)) {
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1992
1993
1994
1995
			/* give up */
			pci_free_consistent(pdev, tx_ring->size, tx_ring->desc,
					    tx_ring->dma);
			pci_free_consistent(pdev, tx_ring->size, olddesc,
1996
					    olddma);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
1997
1998
1999
2000
2001
2002
2003
2004
			DPRINTK(PROBE, ERR,
				"Unable to allocate aligned memory "
				"for the transmit descriptor ring\n");
			vfree(tx_ring->buffer_info);
			return -ENOMEM;
		} else {
			/* Free old allocation, new allocation was successful */
			pci_free_consistent(pdev, tx_ring->size, olddesc,
2005
					    olddma);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
		}
	}
	memset(tx_ring->desc, 0, tx_ring->size);

	tx_ring->next_to_use = 0;
	tx_ring->next_to_clean = 0;
	rtdm_lock_init(&tx_ring->tx_lock);

	return 0;
}

/**
 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
 * @adapter: board private structure
 *
 * this allocates tx resources for all queues, return 0 on success, negative
 * on failure
 **/
int e1000_setup_all_tx_resources(struct e1000_adapter *adapter)
{
	int i, err = 0;

	for (i = 0; i < adapter->num_tx_queues; i++) {
		err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]);
		if (err) {
			DPRINTK(PROBE, ERR,
				"Allocation for Tx Queue %u failed\n", i);
			for (i-- ; i >= 0; i--)
				e1000_free_tx_resources(adapter,
							&adapter->tx_ring[i]);
			break;
		}
	}

	return err;
}

/**
 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
 * @adapter: board private structure
 *
 * Configure the Tx unit of the MAC after a reset.
 **/
static void e1000_configure_tx(struct e1000_adapter *adapter)
{
	u64 tdba;
	struct e1000_hw *hw = &adapter->hw;
	u32 tdlen, tctl, tipg, tarc;
	u32 ipgr1, ipgr2;
	int i;

	/* Setup the HW Tx Head and Tail descriptor pointers */
	for (i = 0; i < adapter->num_tx_queues; i++) {
		tdba = adapter->tx_ring[i].dma;
		tdlen = adapter->tx_ring[i].count * sizeof(struct e1000_tx_desc);
		E1000_WRITE_REG(hw, E1000_TDBAL(i), (tdba & 0x00000000ffffffffULL));
		E1000_WRITE_REG(hw, E1000_TDBAH(i), (tdba >> 32));
		E1000_WRITE_REG(hw, E1000_TDLEN(i), tdlen);
		E1000_WRITE_REG(hw, E1000_TDH(i), 0);
		E1000_WRITE_REG(hw, E1000_TDT(i), 0);
		adapter->tx_ring[i].tdh = E1000_REGISTER(hw, E1000_TDH(i));
		adapter->tx_ring[i].tdt = E1000_REGISTER(hw, E1000_TDT(i));
	}


	/* Set the default values for the Tx Inter Packet Gap timer */
	if (adapter->hw.mac.type <= e1000_82547_rev_2 &&
	    (hw->phy.media_type == e1000_media_type_fiber ||
	     hw->phy.media_type == e1000_media_type_internal_serdes))
		tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
	else
		tipg = DEFAULT_82543_TIPG_IPGT_COPPER;

	switch (hw->mac.type) {
	case e1000_82542:
		tipg = DEFAULT_82542_TIPG_IPGT;
		ipgr1 = DEFAULT_82542_TIPG_IPGR1;
		ipgr2 = DEFAULT_82542_TIPG_IPGR2;
		break;
	case e1000_80003es2lan:
		ipgr1 = DEFAULT_82543_TIPG_IPGR1;
		ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2;
		break;
	default:
		ipgr1 = DEFAULT_82543_TIPG_IPGR1;
		ipgr2 = DEFAULT_82543_TIPG_IPGR2;
		break;
	}
	tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
	tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
	E1000_WRITE_REG(hw, E1000_TIPG, tipg);

	/* Set the Tx Interrupt Delay register */

	E1000_WRITE_REG(hw, E1000_TIDV, adapter->tx_int_delay);
	if (adapter->flags & E1000_FLAG_HAS_INTR_MODERATION)
		E1000_WRITE_REG(hw, E1000_TADV, adapter->tx_abs_int_delay);

	/* Program the Transmit Control Register */

	tctl = E1000_READ_REG(hw, E1000_TCTL);
	tctl &= ~E1000_TCTL_CT;
	tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
		(E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);

	if (hw->mac.type == e1000_82571 || hw->mac.type == e1000_82572) {
		tarc = E1000_READ_REG(hw, E1000_TARC(0));
		/* set the speed mode bit, we'll clear it if we're not at
		 * gigabit link later */
#define SPEED_MODE_BIT (1 << 21)
		tarc |= SPEED_MODE_BIT;
		E1000_WRITE_REG(hw, E1000_TARC(0), tarc);
	} else if (hw->mac.type == e1000_80003es2lan) {
		tarc = E1000_READ_REG(hw, E1000_TARC(0));
		tarc |= 1;
		E1000_WRITE_REG(hw, E1000_TARC(0), tarc);
		tarc = E1000_READ_REG(hw, E1000_TARC(1));
		tarc |= 1;
		E1000_WRITE_REG(hw, E1000_TARC(1), tarc);
	}

	e1000_config_collision_dist(hw);

	/* Setup Transmit Descriptor Settings for eop descriptor */
	adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;

	/* only set IDE if we are delaying interrupts using the timers */
	if (adapter->tx_int_delay)
		adapter->txd_cmd |= E1000_TXD_CMD_IDE;

	if (hw->mac.type < e1000_82543)
		adapter->txd_cmd |= E1000_TXD_CMD_RPS;
	else
		adapter->txd_cmd |= E1000_TXD_CMD_RS;

	/* Cache if we're 82544 running in PCI-X because we'll
	 * need this to apply a workaround later in the send path. */
	if (hw->mac.type == e1000_82544 &&
	    hw->bus.type == e1000_bus_type_pcix)
		adapter->pcix_82544 = 1;

	E1000_WRITE_REG(hw, E1000_TCTL, tctl);

}

/**
 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
 * @adapter: board private structure
 * @rx_ring:    rx descriptor ring (for a specific queue) to setup
 *
 * Returns 0 on success, negative on failure
 **/
static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
2159
				    struct e1000_rx_ring *rx_ring)
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
{
	struct pci_dev *pdev = adapter->pdev;
	int size, desc_len;

	size = sizeof(struct e1000_rx_buffer) * rx_ring->count;
	rx_ring->buffer_info = vmalloc(size);
	if (!rx_ring->buffer_info) {
		DPRINTK(PROBE, ERR,
		"Unable to allocate memory for the receive descriptor ring\n");
		return -ENOMEM;
	}
	memset(rx_ring->buffer_info, 0, size);

	rx_ring->ps_page = kcalloc(rx_ring->count, sizeof(struct e1000_ps_page),
2174
				   GFP_KERNEL);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
2175
2176
2177
2178
2179
2180
2181
2182
	if (!rx_ring->ps_page) {
		vfree(rx_ring->buffer_info);
		DPRINTK(PROBE, ERR,
		"Unable to allocate memory for the receive descriptor ring\n");
		return -ENOMEM;
	}

	rx_ring->ps_page_dma = kcalloc(rx_ring->count,
2183
2184
				       sizeof(struct e1000_ps_page_dma),
				       GFP_KERNEL);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
	if (!rx_ring->ps_page_dma) {
		vfree(rx_ring->buffer_info);
		kfree(rx_ring->ps_page);
		DPRINTK(PROBE, ERR,
		"Unable to allocate memory for the receive descriptor ring\n");
		return -ENOMEM;
	}

	if (adapter->hw.mac.type <= e1000_82547_rev_2)
		desc_len = sizeof(struct e1000_rx_desc);
	else
		desc_len = sizeof(union e1000_rx_desc_packet_split);

	/* Round up to nearest 4K */

	rx_ring->size = rx_ring->count * desc_len;
	rx_ring->size = ALIGN(rx_ring->size, 4096);

	rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size,
2204
					     &rx_ring->dma);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223

	if (!rx_ring->desc) {
		DPRINTK(PROBE, ERR,
		"Unable to allocate memory for the receive descriptor ring\n");
setup_rx_desc_die:
		vfree(rx_ring->buffer_info);
		kfree(rx_ring->ps_page);
		kfree(rx_ring->ps_page_dma);
		return -ENOMEM;
	}

	/* Fix for errata 23, can't cross 64kB boundary */
	if (!e1000_check_64k_bound(adapter, rx_ring->desc, rx_ring->size)) {
		void *olddesc = rx_ring->desc;
		dma_addr_t olddma = rx_ring->dma;
		DPRINTK(RX_ERR, ERR, "rx_ring align check failed: %u bytes "
				     "at %p\n", rx_ring->size, rx_ring->desc);
		/* Try again, without freeing the previous */
		rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size,
2224
						     &rx_ring->dma);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
2225
2226
2227
		/* Failed allocation, critical failure */
		if (!rx_ring->desc) {
			pci_free_consistent(pdev, rx_ring->size, olddesc,
2228
					    olddma);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
2229
2230
2231
2232
2233
2234
2235
			DPRINTK(PROBE, ERR,
				"Unable to allocate memory "
				"for the receive descriptor ring\n");
			goto setup_rx_desc_die;
		}

		if (!e1000_check_64k_bound(adapter, rx_ring->desc,
2236
					   rx_ring->size)) {
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
2237
2238
			/* give up */
			pci_free_consistent(pdev, rx_ring->size, rx_ring->desc,
2239
					    rx_ring->dma);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
2240
			pci_free_consistent(pdev, rx_ring->size, olddesc,
2241
					    olddma);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
2242
2243
2244
2245
2246
2247
2248
			DPRINTK(PROBE, ERR,
				"Unable to allocate aligned memory "
				"for the receive descriptor ring\n");
			goto setup_rx_desc_die;
		} else {
			/* Free old allocation, new allocation was successful */
			pci_free_consistent(pdev, rx_ring->size, olddesc,
2249
					    olddma);
Gilles Chanteperdrix's avatar
Gilles Chanteperdrix committed
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275