projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
sctp: Add address type check while process paramaters of ASCONF chunk
[linux-2.6-block.git] / drivers / net / wireless / prism54 / islpci_dev.c
CommitLineData
1da177e4 1/*
1da177e4
LT		 2 * Copyright (C) 2002 Intersil Americas Inc.
3 * Copyright (C) 2003 Herbert Valerio Riedel <hvr@gnu.org>
4 * Copyright (C) 2003 Luis R. Rodriguez <mcgrof@ruslug.rutgers.edu>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 */
20
1da177e4
LT		 21#include <linux/module.h>
22
23#include <linux/netdevice.h>
ff86a543 24#include <linux/ethtool.h>
1da177e4
LT		 25#include <linux/pci.h>
26#include <linux/etherdevice.h>
27#include <linux/delay.h>
28#include <linux/if_arp.h>
29
30#include <asm/io.h>
31
32#include "prismcompat.h"
33#include "isl_38xx.h"
34#include "isl_ioctl.h"
35#include "islpci_dev.h"
36#include "islpci_mgt.h"
37#include "islpci_eth.h"
38#include "oid_mgt.h"
39
40#define ISL3877_IMAGE_FILE "isl3877"
41#define ISL3886_IMAGE_FILE "isl3886"
42#define ISL3890_IMAGE_FILE "isl3890"
43
44static int prism54_bring_down(islpci_private *);
45static int islpci_alloc_memory(islpci_private *);
46static struct net_device_stats *islpci_statistics(struct net_device *);
47
48/* Temporary dummy MAC address to use until firmware is loaded.
49 * The idea there is that some tools (such as nameif) may query
50 * the MAC address before the netdev is 'open'. By using a valid
51 * OUI prefix, they can process the netdev properly.
52 * Of course, this is not the final/real MAC address. It doesn't
53 * matter, as you are suppose to be able to change it anytime via
54 * ndev->set_mac_address. Jean II */
55static const unsigned char dummy_mac[6] = { 0x00, 0x30, 0xB4, 0x00, 0x00, 0x00 };
56
57static int
58isl_upload_firmware(islpci_private *priv)
59{
60 u32 reg, rc;
61 void __iomem *device_base = priv->device_base;
62
63 /* clear the RAMBoot and the Reset bit */
64 reg = readl(device_base + ISL38XX_CTRL_STAT_REG);
65 reg &= ~ISL38XX_CTRL_STAT_RESET;
66 reg &= ~ISL38XX_CTRL_STAT_RAMBOOT;
67 writel(reg, device_base + ISL38XX_CTRL_STAT_REG);
68 wmb();
69 udelay(ISL38XX_WRITEIO_DELAY);
70
71 /* set the Reset bit without reading the register ! */
72 reg |= ISL38XX_CTRL_STAT_RESET;
73 writel(reg, device_base + ISL38XX_CTRL_STAT_REG);
74 wmb();
75 udelay(ISL38XX_WRITEIO_DELAY);
76
77 /* clear the Reset bit */
78 reg &= ~ISL38XX_CTRL_STAT_RESET;
79 writel(reg, device_base + ISL38XX_CTRL_STAT_REG);
80 wmb();
81
82 /* wait a while for the device to reboot */
83 mdelay(50);
84
85 {
86 const struct firmware *fw_entry = NULL;
87 long fw_len;
88 const u32 *fw_ptr;
89
90 rc = request_firmware(&fw_entry, priv->firmware, PRISM_FW_PDEV);
91 if (rc) {
92 printk(KERN_ERR
93 "%s: request_firmware() failed for '%s'\n",
94 "prism54", priv->firmware);
95 return rc;
96 }
97 /* prepare the Direct Memory Base register */
98 reg = ISL38XX_DEV_FIRMWARE_ADDRES;
99
100 fw_ptr = (u32 *) fw_entry->data;
101 fw_len = fw_entry->size;
102
103 if (fw_len % 4) {
104 printk(KERN_ERR
105 "%s: firmware '%s' size is not multiple of 32bit, aborting!\n",
106 "prism54", priv->firmware);
107 release_firmware(fw_entry);
108 return -EILSEQ; /* Illegal byte sequence */;
109 }
110
111 while (fw_len > 0) {
112 long _fw_len =
113 (fw_len >
114 ISL38XX_MEMORY_WINDOW_SIZE) ?
115 ISL38XX_MEMORY_WINDOW_SIZE : fw_len;
116 u32 __iomem *dev_fw_ptr = device_base + ISL38XX_DIRECT_MEM_WIN;
117
beb7dd86 118 /* set the card's base address for writing the data */
1da177e4
LT		 119 isl38xx_w32_flush(device_base, reg,
120 ISL38XX_DIR_MEM_BASE_REG);
121 wmb(); /* be paranoid */
122
123 /* increment the write address for next iteration */
124 reg += _fw_len;
125 fw_len -= _fw_len;
126
127 /* write the data to the Direct Memory Window 32bit-wise */
128 /* memcpy_toio() doesn't guarantee 32bit writes :-| */
129 while (_fw_len > 0) {
130 /* use non-swapping writel() */
131 __raw_writel(*fw_ptr, dev_fw_ptr);
132 fw_ptr++, dev_fw_ptr++;
133 _fw_len -= 4;
134 }
135
136 /* flush PCI posting */
137 (void) readl(device_base + ISL38XX_PCI_POSTING_FLUSH);
138 wmb(); /* be paranoid again */
139
140 BUG_ON(_fw_len != 0);
141 }
142
143 BUG_ON(fw_len != 0);
144
145 /* Firmware version is at offset 40 (also for "newmac") */
146 printk(KERN_DEBUG "%s: firmware version: %.8s\n",
147 priv->ndev->name, fw_entry->data + 40);
148
149 release_firmware(fw_entry);
150 }
151
152 /* now reset the device
153 * clear the Reset & ClkRun bit, set the RAMBoot bit */
154 reg = readl(device_base + ISL38XX_CTRL_STAT_REG);
155 reg &= ~ISL38XX_CTRL_STAT_CLKRUN;
156 reg &= ~ISL38XX_CTRL_STAT_RESET;
157 reg |= ISL38XX_CTRL_STAT_RAMBOOT;
158 isl38xx_w32_flush(device_base, reg, ISL38XX_CTRL_STAT_REG);
159 wmb();
160 udelay(ISL38XX_WRITEIO_DELAY);
161
162 /* set the reset bit latches the host override and RAMBoot bits
163 * into the device for operation when the reset bit is reset */
164 reg |= ISL38XX_CTRL_STAT_RESET;
165 writel(reg, device_base + ISL38XX_CTRL_STAT_REG);
166 /* don't do flush PCI posting here! */
167 wmb();
168 udelay(ISL38XX_WRITEIO_DELAY);
169
170 /* clear the reset bit should start the whole circus */
171 reg &= ~ISL38XX_CTRL_STAT_RESET;
172 writel(reg, device_base + ISL38XX_CTRL_STAT_REG);
173 /* don't do flush PCI posting here! */
174 wmb();
175 udelay(ISL38XX_WRITEIO_DELAY);
176
177 return 0;
178}
179
180/******************************************************************************
181 Device Interrupt Handler
182******************************************************************************/
183
184irqreturn_t
7d12e780 185islpci_interrupt(int irq, void *config)
1da177e4
LT		 186{
187 u32 reg;
188 islpci_private *priv = config;
189 struct net_device *ndev = priv->ndev;
190 void __iomem *device = priv->device_base;
191 int powerstate = ISL38XX_PSM_POWERSAVE_STATE;
192
193 /* lock the interrupt handler */
194 spin_lock(&priv->slock);
195
196 /* received an interrupt request on a shared IRQ line
197 * first check whether the device is in sleep mode */
198 reg = readl(device + ISL38XX_CTRL_STAT_REG);
199 if (reg & ISL38XX_CTRL_STAT_SLEEPMODE)
200 /* device is in sleep mode, IRQ was generated by someone else */
201 {
202#if VERBOSE > SHOW_ERROR_MESSAGES
203 DEBUG(SHOW_TRACING, "Assuming someone else called the IRQ\n");
204#endif
205 spin_unlock(&priv->slock);
206 return IRQ_NONE;
207 }
208
209
210 /* check whether there is any source of interrupt on the device */
211 reg = readl(device + ISL38XX_INT_IDENT_REG);
212
213 /* also check the contents of the Interrupt Enable Register, because this
214 * will filter out interrupt sources from other devices on the same irq ! */
215 reg &= readl(device + ISL38XX_INT_EN_REG);
216 reg &= ISL38XX_INT_SOURCES;
217
218 if (reg != 0) {
219 if (islpci_get_state(priv) != PRV_STATE_SLEEP)
220 powerstate = ISL38XX_PSM_ACTIVE_STATE;
221
222 /* reset the request bits in the Identification register */
223 isl38xx_w32_flush(device, reg, ISL38XX_INT_ACK_REG);
224
225#if VERBOSE > SHOW_ERROR_MESSAGES
226 DEBUG(SHOW_FUNCTION_CALLS,
227 "IRQ: Identification register 0x%p 0x%x \n", device, reg);
228#endif
229
230 /* check for each bit in the register separately */
231 if (reg & ISL38XX_INT_IDENT_UPDATE) {
232#if VERBOSE > SHOW_ERROR_MESSAGES
233 /* Queue has been updated */
234 DEBUG(SHOW_TRACING, "IRQ: Update flag \n");
235
236 DEBUG(SHOW_QUEUE_INDEXES,
237 "CB drv Qs: [%i][%i][%i][%i][%i][%i]\n",
238 le32_to_cpu(priv->control_block->
239 driver_curr_frag[0]),
240 le32_to_cpu(priv->control_block->
241 driver_curr_frag[1]),
242 le32_to_cpu(priv->control_block->
243 driver_curr_frag[2]),
244 le32_to_cpu(priv->control_block->
245 driver_curr_frag[3]),
246 le32_to_cpu(priv->control_block->
247 driver_curr_frag[4]),
248 le32_to_cpu(priv->control_block->
249 driver_curr_frag[5])
250 );
251
252 DEBUG(SHOW_QUEUE_INDEXES,
253 "CB dev Qs: [%i][%i][%i][%i][%i][%i]\n",
254 le32_to_cpu(priv->control_block->
255 device_curr_frag[0]),
256 le32_to_cpu(priv->control_block->
257 device_curr_frag[1]),
258 le32_to_cpu(priv->control_block->
259 device_curr_frag[2]),
260 le32_to_cpu(priv->control_block->
261 device_curr_frag[3]),
262 le32_to_cpu(priv->control_block->
263 device_curr_frag[4]),
264 le32_to_cpu(priv->control_block->
265 device_curr_frag[5])
266 );
267#endif
268
269 /* cleanup the data low transmit queue */
270 islpci_eth_cleanup_transmit(priv, priv->control_block);
271
272 /* device is in active state, update the
273 * powerstate flag if necessary */
274 powerstate = ISL38XX_PSM_ACTIVE_STATE;
275
276 /* check all three queues in priority order
277 * call the PIMFOR receive function until the
278 * queue is empty */
279 if (isl38xx_in_queue(priv->control_block,
280 ISL38XX_CB_RX_MGMTQ) != 0) {
281#if VERBOSE > SHOW_ERROR_MESSAGES
282 DEBUG(SHOW_TRACING,
283 "Received frame in Management Queue\n");
284#endif
285 islpci_mgt_receive(ndev);
286
287 islpci_mgt_cleanup_transmit(ndev);
288
289 /* Refill slots in receive queue */
290 islpci_mgmt_rx_fill(ndev);
291
292 /* no need to trigger the device, next
293 islpci_mgt_transaction does it */
294 }
295
296 while (isl38xx_in_queue(priv->control_block,
297 ISL38XX_CB_RX_DATA_LQ) != 0) {
298#if VERBOSE > SHOW_ERROR_MESSAGES
299 DEBUG(SHOW_TRACING,
300 "Received frame in Data Low Queue \n");
301#endif
302 islpci_eth_receive(priv);
303 }
304
305 /* check whether the data transmit queues were full */
306 if (priv->data_low_tx_full) {
307 /* check whether the transmit is not full anymore */
308 if (ISL38XX_CB_TX_QSIZE -
309 isl38xx_in_queue(priv->control_block,
310 ISL38XX_CB_TX_DATA_LQ) >=
311 ISL38XX_MIN_QTHRESHOLD) {
312 /* nope, the driver is ready for more network frames */
313 netif_wake_queue(priv->ndev);
314
315 /* reset the full flag */
316 priv->data_low_tx_full = 0;
317 }
318 }
319 }
320
321 if (reg & ISL38XX_INT_IDENT_INIT) {
322 /* Device has been initialized */
323#if VERBOSE > SHOW_ERROR_MESSAGES
324 DEBUG(SHOW_TRACING,
325 "IRQ: Init flag, device initialized \n");
326#endif
327 wake_up(&priv->reset_done);
328 }
329
330 if (reg & ISL38XX_INT_IDENT_SLEEP) {
331 /* Device intends to move to powersave state */
332#if VERBOSE > SHOW_ERROR_MESSAGES
333 DEBUG(SHOW_TRACING, "IRQ: Sleep flag \n");
334#endif
335 isl38xx_handle_sleep_request(priv->control_block,
336 &powerstate,
337 priv->device_base);
338 }
339
340 if (reg & ISL38XX_INT_IDENT_WAKEUP) {
341 /* Device has been woken up to active state */
342#if VERBOSE > SHOW_ERROR_MESSAGES
343 DEBUG(SHOW_TRACING, "IRQ: Wakeup flag \n");
344#endif
345
346 isl38xx_handle_wakeup(priv->control_block,
347 &powerstate, priv->device_base);
348 }
349 } else {
350#if VERBOSE > SHOW_ERROR_MESSAGES
351 DEBUG(SHOW_TRACING, "Assuming someone else called the IRQ\n");
352#endif
353 spin_unlock(&priv->slock);
354 return IRQ_NONE;
355 }
356
357 /* sleep -> ready */
358 if (islpci_get_state(priv) == PRV_STATE_SLEEP
359 && powerstate == ISL38XX_PSM_ACTIVE_STATE)
360 islpci_set_state(priv, PRV_STATE_READY);
361
362 /* !sleep -> sleep */
363 if (islpci_get_state(priv) != PRV_STATE_SLEEP
364 && powerstate == ISL38XX_PSM_POWERSAVE_STATE)
365 islpci_set_state(priv, PRV_STATE_SLEEP);
366
367 /* unlock the interrupt handler */
368 spin_unlock(&priv->slock);
369
370 return IRQ_HANDLED;
371}
372
373/******************************************************************************
374 Network Interface Control & Statistical functions
375******************************************************************************/
376static int
377islpci_open(struct net_device *ndev)
378{
379 u32 rc;
380 islpci_private *priv = netdev_priv(ndev);
381
382 /* reset data structures, upload firmware and reset device */
383 rc = islpci_reset(priv,1);
384 if (rc) {
385 prism54_bring_down(priv);
386 return rc; /* Returns informative message */
387 }
388
389 netif_start_queue(ndev);
7b463ced
LR		 390
391 /* Turn off carrier unless we know we have associated */
392 netif_carrier_off(ndev);
1da177e4
LT		 393
394 return 0;
395}
396
397static int
398islpci_close(struct net_device *ndev)
399{
400 islpci_private *priv = netdev_priv(ndev);
401
402 printk(KERN_DEBUG "%s: islpci_close ()\n", ndev->name);
403
404 netif_stop_queue(ndev);
405
406 return prism54_bring_down(priv);
407}
408
409static int
410prism54_bring_down(islpci_private *priv)
411{
412 void __iomem *device_base = priv->device_base;
413 u32 reg;
414 /* we are going to shutdown the device */
415 islpci_set_state(priv, PRV_STATE_PREBOOT);
416
417 /* disable all device interrupts in case they weren't */
93b2dd12 418 isl38xx_disable_interrupts(priv->device_base);
1da177e4
LT		 419
420 /* For safety reasons, we may want to ensure that no DMA transfer is
421 * currently in progress by emptying the TX and RX queues. */
422
423 /* wait until interrupts have finished executing on other CPUs */
424 synchronize_irq(priv->pdev->irq);
425
426 reg = readl(device_base + ISL38XX_CTRL_STAT_REG);
427 reg &= ~(ISL38XX_CTRL_STAT_RESET | ISL38XX_CTRL_STAT_RAMBOOT);
428 writel(reg, device_base + ISL38XX_CTRL_STAT_REG);
429 wmb();
430 udelay(ISL38XX_WRITEIO_DELAY);
431
432 reg |= ISL38XX_CTRL_STAT_RESET;
433 writel(reg, device_base + ISL38XX_CTRL_STAT_REG);
434 wmb();
435 udelay(ISL38XX_WRITEIO_DELAY);
436
437 /* clear the Reset bit */
438 reg &= ~ISL38XX_CTRL_STAT_RESET;
439 writel(reg, device_base + ISL38XX_CTRL_STAT_REG);
440 wmb();
441
442 /* wait a while for the device to reset */
3173c890 443 schedule_timeout_uninterruptible(msecs_to_jiffies(50));
1da177e4
LT		 444
445 return 0;
446}
447
448static int
449islpci_upload_fw(islpci_private *priv)
450{
451 islpci_state_t old_state;
452 u32 rc;
453
454 old_state = islpci_set_state(priv, PRV_STATE_BOOT);
455
456 printk(KERN_DEBUG "%s: uploading firmware...\n", priv->ndev->name);
457
458 rc = isl_upload_firmware(priv);
459 if (rc) {
460 /* error uploading the firmware */
461 printk(KERN_ERR "%s: could not upload firmware ('%s')\n",
462 priv->ndev->name, priv->firmware);
463
464 islpci_set_state(priv, old_state);
465 return rc;
466 }
467
468 printk(KERN_DEBUG "%s: firmware upload complete\n",
469 priv->ndev->name);
470
471 islpci_set_state(priv, PRV_STATE_POSTBOOT);
472
473 return 0;
474}
475
476static int
477islpci_reset_if(islpci_private *priv)
478{
479 long remaining;
480 int result = -ETIME;
481 int count;
482
483 DEFINE_WAIT(wait);
484 prepare_to_wait(&priv->reset_done, &wait, TASK_UNINTERRUPTIBLE);
93b2dd12 485
1da177e4
LT		 486 /* now the last step is to reset the interface */
487 isl38xx_interface_reset(priv->device_base, priv->device_host_address);
488 islpci_set_state(priv, PRV_STATE_PREINIT);
489
490 for(count = 0; count < 2 && result; count++) {
491 /* The software reset acknowledge needs about 220 msec here.
492 * Be conservative and wait for up to one second. */
93b2dd12 493
3173c890 494 remaining = schedule_timeout_uninterruptible(HZ);
1da177e4
LT		 495
496 if(remaining > 0) {
497 result = 0;
498 break;
499 }
500
93b2dd12 501 /* If we're here it's because our IRQ hasn't yet gone through.
1da177e4
LT		 502 * Retry a bit more...
503 */
504 printk(KERN_ERR "%s: no 'reset complete' IRQ seen - retrying\n",
505 priv->ndev->name);
506 }
507
508 finish_wait(&priv->reset_done, &wait);
509
510 if (result) {
511 printk(KERN_ERR "%s: interface reset failure\n", priv->ndev->name);
512 return result;
513 }
514
515 islpci_set_state(priv, PRV_STATE_INIT);
516
517 /* Now that the device is 100% up, let's allow
518 * for the other interrupts --
93b2dd12 519 * NOTE: this is not *yet* true since we've only allowed the
1da177e4
LT		 520 * INIT interrupt on the IRQ line. We can perhaps poll
521 * the IRQ line until we know for sure the reset went through */
522 isl38xx_enable_common_interrupts(priv->device_base);
523
524 down_write(&priv->mib_sem);
525 result = mgt_commit(priv);
526 if (result) {
527 printk(KERN_ERR "%s: interface reset failure\n", priv->ndev->name);
528 up_write(&priv->mib_sem);
529 return result;
530 }
531 up_write(&priv->mib_sem);
532
533 islpci_set_state(priv, PRV_STATE_READY);
534
535 printk(KERN_DEBUG "%s: interface reset complete\n", priv->ndev->name);
536 return 0;
537}
538
539int
540islpci_reset(islpci_private *priv, int reload_firmware)
541{
542 isl38xx_control_block *cb = /* volatile not needed */
543 (isl38xx_control_block *) priv->control_block;
544 unsigned counter;
545 int rc;
546
547 if (reload_firmware)
548 islpci_set_state(priv, PRV_STATE_PREBOOT);
549 else
550 islpci_set_state(priv, PRV_STATE_POSTBOOT);
551
552 printk(KERN_DEBUG "%s: resetting device...\n", priv->ndev->name);
553
554 /* disable all device interrupts in case they weren't */
555 isl38xx_disable_interrupts(priv->device_base);
556
557 /* flush all management queues */
558 priv->index_mgmt_tx = 0;
559 priv->index_mgmt_rx = 0;
560
561 /* clear the indexes in the frame pointer */
562 for (counter = 0; counter < ISL38XX_CB_QCOUNT; counter++) {
563 cb->driver_curr_frag[counter] = cpu_to_le32(0);
564 cb->device_curr_frag[counter] = cpu_to_le32(0);
565 }
566
567 /* reset the mgmt receive queue */
568 for (counter = 0; counter < ISL38XX_CB_MGMT_QSIZE; counter++) {
569 isl38xx_fragment *frag = &cb->rx_data_mgmt[counter];
570 frag->size = cpu_to_le16(MGMT_FRAME_SIZE);
571 frag->flags = 0;
572 frag->address = cpu_to_le32(priv->mgmt_rx[counter].pci_addr);
573 }
574
575 for (counter = 0; counter < ISL38XX_CB_RX_QSIZE; counter++) {
576 cb->rx_data_low[counter].address =
577 cpu_to_le32((u32) priv->pci_map_rx_address[counter]);
578 }
579
580 /* since the receive queues are filled with empty fragments, now we can
581 * set the corresponding indexes in the Control Block */
582 priv->control_block->driver_curr_frag[ISL38XX_CB_RX_DATA_LQ] =
583 cpu_to_le32(ISL38XX_CB_RX_QSIZE);
584 priv->control_block->driver_curr_frag[ISL38XX_CB_RX_MGMTQ] =
585 cpu_to_le32(ISL38XX_CB_MGMT_QSIZE);
586
587 /* reset the remaining real index registers and full flags */
588 priv->free_data_rx = 0;
589 priv->free_data_tx = 0;
590 priv->data_low_tx_full = 0;
591
592 if (reload_firmware) { /* Should we load the firmware ? */
593 /* now that the data structures are cleaned up, upload
594 * firmware and reset interface */
595 rc = islpci_upload_fw(priv);
596 if (rc) {
597 printk(KERN_ERR "%s: islpci_reset: failure\n",
598 priv->ndev->name);
599 return rc;
600 }
601 }
602
603 /* finally reset interface */
604 rc = islpci_reset_if(priv);
605 if (rc)
606 printk(KERN_ERR "prism54: Your card/socket may be faulty, or IRQ line too busy :(\n");
607 return rc;
608}
609
610static struct net_device_stats *
611islpci_statistics(struct net_device *ndev)
612{
613 islpci_private *priv = netdev_priv(ndev);
614
615#if VERBOSE > SHOW_ERROR_MESSAGES
616 DEBUG(SHOW_FUNCTION_CALLS, "islpci_statistics\n");
617#endif
618
619 return &priv->statistics;
620}
621
622/******************************************************************************
623 Network device configuration functions
624******************************************************************************/
625static int
626islpci_alloc_memory(islpci_private *priv)
627{
628 int counter;
629
630#if VERBOSE > SHOW_ERROR_MESSAGES
631 printk(KERN_DEBUG "islpci_alloc_memory\n");
632#endif
633
634 /* remap the PCI device base address to accessable */
635 if (!(priv->device_base =
636 ioremap(pci_resource_start(priv->pdev, 0),
637 ISL38XX_PCI_MEM_SIZE))) {
638 /* error in remapping the PCI device memory address range */
639 printk(KERN_ERR "PCI memory remapping failed \n");
640 return -1;
641 }
642
643 /* memory layout for consistent DMA region:
644 *
645 * Area 1: Control Block for the device interface
646 * Area 2: Power Save Mode Buffer for temporary frame storage. Be aware that
647 * the number of supported stations in the AP determines the minimal
648 * size of the buffer !
649 */
650
651 /* perform the allocation */
652 priv->driver_mem_address = pci_alloc_consistent(priv->pdev,
653 HOST_MEM_BLOCK,
654 &priv->
655 device_host_address);
656
657 if (!priv->driver_mem_address) {
658 /* error allocating the block of PCI memory */
659 printk(KERN_ERR "%s: could not allocate DMA memory, aborting!",
660 "prism54");
661 return -1;
662 }
663
664 /* assign the Control Block to the first address of the allocated area */
665 priv->control_block =
666 (isl38xx_control_block *) priv->driver_mem_address;
667
668 /* set the Power Save Buffer pointer directly behind the CB */
669 priv->device_psm_buffer =
670 priv->device_host_address + CONTROL_BLOCK_SIZE;
671
672 /* make sure all buffer pointers are initialized */
673 for (counter = 0; counter < ISL38XX_CB_QCOUNT; counter++) {
674 priv->control_block->driver_curr_frag[counter] = cpu_to_le32(0);
675 priv->control_block->device_curr_frag[counter] = cpu_to_le32(0);
676 }
677
678 priv->index_mgmt_rx = 0;
679 memset(priv->mgmt_rx, 0, sizeof(priv->mgmt_rx));
680 memset(priv->mgmt_tx, 0, sizeof(priv->mgmt_tx));
681
682 /* allocate rx queue for management frames */
683 if (islpci_mgmt_rx_fill(priv->ndev) < 0)
684 goto out_free;
685
686 /* now get the data rx skb's */
687 memset(priv->data_low_rx, 0, sizeof (priv->data_low_rx));
688 memset(priv->pci_map_rx_address, 0, sizeof (priv->pci_map_rx_address));
689
690 for (counter = 0; counter < ISL38XX_CB_RX_QSIZE; counter++) {
691 struct sk_buff *skb;
692
693 /* allocate an sk_buff for received data frames storage
694 * each frame on receive size consists of 1 fragment
695 * include any required allignment operations */
696 if (!(skb = dev_alloc_skb(MAX_FRAGMENT_SIZE_RX + 2))) {
697 /* error allocating an sk_buff structure elements */
698 printk(KERN_ERR "Error allocating skb.\n");
699 skb = NULL;
700 goto out_free;
701 }
702 skb_reserve(skb, (4 - (long) skb->data) & 0x03);
703 /* add the new allocated sk_buff to the buffer array */
704 priv->data_low_rx[counter] = skb;
705
706 /* map the allocated skb data area to pci */
707 priv->pci_map_rx_address[counter] =
708 pci_map_single(priv->pdev, (void *) skb->data,
709 MAX_FRAGMENT_SIZE_RX + 2,
710 PCI_DMA_FROMDEVICE);
711 if (!priv->pci_map_rx_address[counter]) {
712 /* error mapping the buffer to device
713 accessable memory address */
714 printk(KERN_ERR "failed to map skb DMA'able\n");
715 goto out_free;
716 }
717 }
718
719 prism54_acl_init(&priv->acl);
eab411f1 720 prism54_wpa_bss_ie_init(priv);
93b2dd12 721 if (mgt_init(priv))
1da177e4
LT		 722 goto out_free;
723
724 return 0;
725 out_free:
726 islpci_free_memory(priv);
727 return -1;
728}
729
730int
731islpci_free_memory(islpci_private *priv)
732{
733 int counter;
734
735 if (priv->device_base)
736 iounmap(priv->device_base);
737 priv->device_base = NULL;
738
739 /* free consistent DMA area... */
740 if (priv->driver_mem_address)
741 pci_free_consistent(priv->pdev, HOST_MEM_BLOCK,
742 priv->driver_mem_address,
743 priv->device_host_address);
744
745 /* clear some dangling pointers */
746 priv->driver_mem_address = NULL;
747 priv->device_host_address = 0;
748 priv->device_psm_buffer = 0;
749 priv->control_block = NULL;
750
751 /* clean up mgmt rx buffers */
752 for (counter = 0; counter < ISL38XX_CB_MGMT_QSIZE; counter++) {
753 struct islpci_membuf *buf = &priv->mgmt_rx[counter];
754 if (buf->pci_addr)
755 pci_unmap_single(priv->pdev, buf->pci_addr,
756 buf->size, PCI_DMA_FROMDEVICE);
757 buf->pci_addr = 0;
b4558ea9 758 kfree(buf->mem);
1da177e4
LT		 759 buf->size = 0;
760 buf->mem = NULL;
761 }
762
763 /* clean up data rx buffers */
764 for (counter = 0; counter < ISL38XX_CB_RX_QSIZE; counter++) {
765 if (priv->pci_map_rx_address[counter])
766 pci_unmap_single(priv->pdev,
767 priv->pci_map_rx_address[counter],
768 MAX_FRAGMENT_SIZE_RX + 2,
769 PCI_DMA_FROMDEVICE);
770 priv->pci_map_rx_address[counter] = 0;
771
772 if (priv->data_low_rx[counter])
773 dev_kfree_skb(priv->data_low_rx[counter]);
774 priv->data_low_rx[counter] = NULL;
775 }
776
777 /* Free the acces control list and the WPA list */
778 prism54_acl_clean(&priv->acl);
eab411f1 779 prism54_wpa_bss_ie_clean(priv);
1da177e4
LT		 780 mgt_clean(priv);
781
782 return 0;
783}
784
785#if 0
786static void
787islpci_set_multicast_list(struct net_device *dev)
788{
789 /* put device into promisc mode and let network layer handle it */
790}
791#endif
792
ff86a543
KE		 793static void islpci_ethtool_get_drvinfo(struct net_device *dev,
794 struct ethtool_drvinfo *info)
795{
796 strcpy(info->driver, DRV_NAME);
797 strcpy(info->version, DRV_VERSION);
798}
799
800static struct ethtool_ops islpci_ethtool_ops = {
801 .get_drvinfo = islpci_ethtool_get_drvinfo,
802};
803
1da177e4
LT		 804struct net_device *
805islpci_setup(struct pci_dev *pdev)
806{
807 islpci_private *priv;
808 struct net_device *ndev = alloc_etherdev(sizeof (islpci_private));
809
810 if (!ndev)
811 return ndev;
812
1da177e4
LT		 813 pci_set_drvdata(pdev, ndev);
814#if defined(SET_NETDEV_DEV)
815 SET_NETDEV_DEV(ndev, &pdev->dev);
816#endif
817
818 /* setup the structure members */
819 ndev->base_addr = pci_resource_start(pdev, 0);
820 ndev->irq = pdev->irq;
821
822 /* initialize the function pointers */
823 ndev->open = &islpci_open;
824 ndev->stop = &islpci_close;
825 ndev->get_stats = &islpci_statistics;
1da177e4
LT		 826 ndev->do_ioctl = &prism54_ioctl;
827 ndev->wireless_handlers =
828 (struct iw_handler_def *) &prism54_handler_def;
ff86a543 829 ndev->ethtool_ops = &islpci_ethtool_ops;
1da177e4
LT		 830
831 ndev->hard_start_xmit = &islpci_eth_transmit;
832 /* ndev->set_multicast_list = &islpci_set_multicast_list; */
833 ndev->addr_len = ETH_ALEN;
834 ndev->set_mac_address = &prism54_set_mac_address;
835 /* Get a non-zero dummy MAC address for nameif. Jean II */
836 memcpy(ndev->dev_addr, dummy_mac, 6);
837
838#ifdef HAVE_TX_TIMEOUT
839 ndev->watchdog_timeo = ISLPCI_TX_TIMEOUT;
840 ndev->tx_timeout = &islpci_eth_tx_timeout;
841#endif
842
843 /* allocate a private device structure to the network device */
844 priv = netdev_priv(ndev);
845 priv->ndev = ndev;
846 priv->pdev = pdev;
847 priv->monitor_type = ARPHRD_IEEE80211;
848 priv->ndev->type = (priv->iw_mode == IW_MODE_MONITOR) ?
849 priv->monitor_type : ARPHRD_ETHER;
850
1da177e4
LT		 851 /* Add pointers to enable iwspy support. */
852 priv->wireless_data.spy_data = &priv->spy_data;
853 ndev->wireless_data = &priv->wireless_data;
1da177e4
LT		 854
855 /* save the start and end address of the PCI memory area */
856 ndev->mem_start = (unsigned long) priv->device_base;
857 ndev->mem_end = ndev->mem_start + ISL38XX_PCI_MEM_SIZE;
858
859#if VERBOSE > SHOW_ERROR_MESSAGES
860 DEBUG(SHOW_TRACING, "PCI Memory remapped to 0x%p\n", priv->device_base);
861#endif
862
863 init_waitqueue_head(&priv->reset_done);
864
865 /* init the queue read locks, process wait counter */
1b34fd39 866 mutex_init(&priv->mgmt_lock);
1da177e4
LT		 867 priv->mgmt_received = NULL;
868 init_waitqueue_head(&priv->mgmt_wqueue);
f8139218 869 mutex_init(&priv->stats_lock);
1da177e4
LT		 870 spin_lock_init(&priv->slock);
871
872 /* init state machine with off#1 state */
873 priv->state = PRV_STATE_OFF;
874 priv->state_off = 1;
875
876 /* initialize workqueue's */
c4028958 877 INIT_WORK(&priv->stats_work, prism54_update_stats);
1da177e4
LT		 878 priv->stats_timestamp = 0;
879
c4028958 880 INIT_WORK(&priv->reset_task, islpci_do_reset_and_wake);
1da177e4
LT		 881 priv->reset_task_pending = 0;
882
883 /* allocate various memory areas */
884 if (islpci_alloc_memory(priv))
885 goto do_free_netdev;
886
887 /* select the firmware file depending on the device id */
888 switch (pdev->device) {
889 case 0x3877:
890 strcpy(priv->firmware, ISL3877_IMAGE_FILE);
891 break;
892
893 case 0x3886:
894 strcpy(priv->firmware, ISL3886_IMAGE_FILE);
895 break;
896
897 default:
898 strcpy(priv->firmware, ISL3890_IMAGE_FILE);
899 break;
900 }
901
902 if (register_netdev(ndev)) {
903 DEBUG(SHOW_ERROR_MESSAGES,
904 "ERROR: register_netdev() failed \n");
905 goto do_islpci_free_memory;
906 }
907
908 return ndev;
909
910 do_islpci_free_memory:
911 islpci_free_memory(priv);
912 do_free_netdev:
913 pci_set_drvdata(pdev, NULL);
914 free_netdev(ndev);
915 priv = NULL;
916 return NULL;
917}
918
919islpci_state_t
920islpci_set_state(islpci_private *priv, islpci_state_t new_state)
921{
922 islpci_state_t old_state;
923
924 /* lock */
925 old_state = priv->state;
926
927 /* this means either a race condition or some serious error in
928 * the driver code */
929 switch (new_state) {
930 case PRV_STATE_OFF:
931 priv->state_off++;
932 default:
933 priv->state = new_state;
934 break;
935
936 case PRV_STATE_PREBOOT:
937 /* there are actually many off-states, enumerated by
938 * state_off */
939 if (old_state == PRV_STATE_OFF)
940 priv->state_off--;
941
942 /* only if hw_unavailable is zero now it means we either
943 * were in off#1 state, or came here from
944 * somewhere else */
945 if (!priv->state_off)
946 priv->state = new_state;
947 break;
948 };
949#if 0
950 printk(KERN_DEBUG "%s: state transition %d -> %d (off#%d)\n",
951 priv->ndev->name, old_state, new_state, priv->state_off);
952#endif
953
954 /* invariants */
955 BUG_ON(priv->state_off < 0);
956 BUG_ON(priv->state_off && (priv->state != PRV_STATE_OFF));
957 BUG_ON(!priv->state_off && (priv->state == PRV_STATE_OFF));
958
959 /* unlock */
960 return old_state;
961}
Linux 6.x block layer and io_uring tree(s)