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authorAndrea Bastoni <bastoni@cs.unc.edu>2010-05-30 19:16:45 -0400
committerAndrea Bastoni <bastoni@cs.unc.edu>2010-05-30 19:16:45 -0400
commitada47b5fe13d89735805b566185f4885f5a3f750 (patch)
tree644b88f8a71896307d71438e9b3af49126ffb22b /drivers/net/wireless/rt2x00/rt2800pci.c
parent43e98717ad40a4ae64545b5ba047c7b86aa44f4f (diff)
parent3280f21d43ee541f97f8cda5792150d2dbec20d5 (diff)
Merge branch 'wip-2.6.34' into old-private-masterarchived-private-master
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2800pci.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2800pci.c1288
1 files changed, 1288 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
new file mode 100644
index 000000000000..91cce2d0f6db
--- /dev/null
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -0,0 +1,1288 @@
1/*
2 Copyright (C) 2009 Ivo van Doorn <IvDoorn@gmail.com>
3 Copyright (C) 2009 Alban Browaeys <prahal@yahoo.com>
4 Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
5 Copyright (C) 2009 Luis Correia <luis.f.correia@gmail.com>
6 Copyright (C) 2009 Mattias Nissler <mattias.nissler@gmx.de>
7 Copyright (C) 2009 Mark Asselstine <asselsm@gmail.com>
8 Copyright (C) 2009 Xose Vazquez Perez <xose.vazquez@gmail.com>
9 Copyright (C) 2009 Bart Zolnierkiewicz <bzolnier@gmail.com>
10 <http://rt2x00.serialmonkey.com>
11
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
16
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
21
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the
24 Free Software Foundation, Inc.,
25 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 */
27
28/*
29 Module: rt2800pci
30 Abstract: rt2800pci device specific routines.
31 Supported chipsets: RT2800E & RT2800ED.
32 */
33
34#include <linux/crc-ccitt.h>
35#include <linux/delay.h>
36#include <linux/etherdevice.h>
37#include <linux/init.h>
38#include <linux/kernel.h>
39#include <linux/module.h>
40#include <linux/pci.h>
41#include <linux/platform_device.h>
42#include <linux/eeprom_93cx6.h>
43
44#include "rt2x00.h"
45#include "rt2x00pci.h"
46#include "rt2x00soc.h"
47#include "rt2800lib.h"
48#include "rt2800.h"
49#include "rt2800pci.h"
50
51/*
52 * Allow hardware encryption to be disabled.
53 */
54static int modparam_nohwcrypt = 1;
55module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
56MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
57
58static void rt2800pci_mcu_status(struct rt2x00_dev *rt2x00dev, const u8 token)
59{
60 unsigned int i;
61 u32 reg;
62
63 for (i = 0; i < 200; i++) {
64 rt2800_register_read(rt2x00dev, H2M_MAILBOX_CID, &reg);
65
66 if ((rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD0) == token) ||
67 (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD1) == token) ||
68 (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD2) == token) ||
69 (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD3) == token))
70 break;
71
72 udelay(REGISTER_BUSY_DELAY);
73 }
74
75 if (i == 200)
76 ERROR(rt2x00dev, "MCU request failed, no response from hardware\n");
77
78 rt2800_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0);
79 rt2800_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);
80}
81
82#ifdef CONFIG_RT2800PCI_SOC
83static void rt2800pci_read_eeprom_soc(struct rt2x00_dev *rt2x00dev)
84{
85 u32 *base_addr = (u32 *) KSEG1ADDR(0x1F040000); /* XXX for RT3052 */
86
87 memcpy_fromio(rt2x00dev->eeprom, base_addr, EEPROM_SIZE);
88}
89#else
90static inline void rt2800pci_read_eeprom_soc(struct rt2x00_dev *rt2x00dev)
91{
92}
93#endif /* CONFIG_RT2800PCI_SOC */
94
95#ifdef CONFIG_RT2800PCI_PCI
96static void rt2800pci_eepromregister_read(struct eeprom_93cx6 *eeprom)
97{
98 struct rt2x00_dev *rt2x00dev = eeprom->data;
99 u32 reg;
100
101 rt2800_register_read(rt2x00dev, E2PROM_CSR, &reg);
102
103 eeprom->reg_data_in = !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_IN);
104 eeprom->reg_data_out = !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_OUT);
105 eeprom->reg_data_clock =
106 !!rt2x00_get_field32(reg, E2PROM_CSR_DATA_CLOCK);
107 eeprom->reg_chip_select =
108 !!rt2x00_get_field32(reg, E2PROM_CSR_CHIP_SELECT);
109}
110
111static void rt2800pci_eepromregister_write(struct eeprom_93cx6 *eeprom)
112{
113 struct rt2x00_dev *rt2x00dev = eeprom->data;
114 u32 reg = 0;
115
116 rt2x00_set_field32(&reg, E2PROM_CSR_DATA_IN, !!eeprom->reg_data_in);
117 rt2x00_set_field32(&reg, E2PROM_CSR_DATA_OUT, !!eeprom->reg_data_out);
118 rt2x00_set_field32(&reg, E2PROM_CSR_DATA_CLOCK,
119 !!eeprom->reg_data_clock);
120 rt2x00_set_field32(&reg, E2PROM_CSR_CHIP_SELECT,
121 !!eeprom->reg_chip_select);
122
123 rt2800_register_write(rt2x00dev, E2PROM_CSR, reg);
124}
125
126static void rt2800pci_read_eeprom_pci(struct rt2x00_dev *rt2x00dev)
127{
128 struct eeprom_93cx6 eeprom;
129 u32 reg;
130
131 rt2800_register_read(rt2x00dev, E2PROM_CSR, &reg);
132
133 eeprom.data = rt2x00dev;
134 eeprom.register_read = rt2800pci_eepromregister_read;
135 eeprom.register_write = rt2800pci_eepromregister_write;
136 eeprom.width = !rt2x00_get_field32(reg, E2PROM_CSR_TYPE) ?
137 PCI_EEPROM_WIDTH_93C46 : PCI_EEPROM_WIDTH_93C66;
138 eeprom.reg_data_in = 0;
139 eeprom.reg_data_out = 0;
140 eeprom.reg_data_clock = 0;
141 eeprom.reg_chip_select = 0;
142
143 eeprom_93cx6_multiread(&eeprom, EEPROM_BASE, rt2x00dev->eeprom,
144 EEPROM_SIZE / sizeof(u16));
145}
146
147static int rt2800pci_efuse_detect(struct rt2x00_dev *rt2x00dev)
148{
149 return rt2800_efuse_detect(rt2x00dev);
150}
151
152static inline void rt2800pci_read_eeprom_efuse(struct rt2x00_dev *rt2x00dev)
153{
154 rt2800_read_eeprom_efuse(rt2x00dev);
155}
156#else
157static inline void rt2800pci_read_eeprom_pci(struct rt2x00_dev *rt2x00dev)
158{
159}
160
161static inline int rt2800pci_efuse_detect(struct rt2x00_dev *rt2x00dev)
162{
163 return 0;
164}
165
166static inline void rt2800pci_read_eeprom_efuse(struct rt2x00_dev *rt2x00dev)
167{
168}
169#endif /* CONFIG_RT2800PCI_PCI */
170
171/*
172 * Firmware functions
173 */
174static char *rt2800pci_get_firmware_name(struct rt2x00_dev *rt2x00dev)
175{
176 return FIRMWARE_RT2860;
177}
178
179static int rt2800pci_check_firmware(struct rt2x00_dev *rt2x00dev,
180 const u8 *data, const size_t len)
181{
182 u16 fw_crc;
183 u16 crc;
184
185 /*
186 * Only support 8kb firmware files.
187 */
188 if (len != 8192)
189 return FW_BAD_LENGTH;
190
191 /*
192 * The last 2 bytes in the firmware array are the crc checksum itself,
193 * this means that we should never pass those 2 bytes to the crc
194 * algorithm.
195 */
196 fw_crc = (data[len - 2] << 8 | data[len - 1]);
197
198 /*
199 * Use the crc ccitt algorithm.
200 * This will return the same value as the legacy driver which
201 * used bit ordering reversion on the both the firmware bytes
202 * before input input as well as on the final output.
203 * Obviously using crc ccitt directly is much more efficient.
204 */
205 crc = crc_ccitt(~0, data, len - 2);
206
207 /*
208 * There is a small difference between the crc-itu-t + bitrev and
209 * the crc-ccitt crc calculation. In the latter method the 2 bytes
210 * will be swapped, use swab16 to convert the crc to the correct
211 * value.
212 */
213 crc = swab16(crc);
214
215 return (fw_crc == crc) ? FW_OK : FW_BAD_CRC;
216}
217
218static int rt2800pci_load_firmware(struct rt2x00_dev *rt2x00dev,
219 const u8 *data, const size_t len)
220{
221 unsigned int i;
222 u32 reg;
223
224 /*
225 * Wait for stable hardware.
226 */
227 for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
228 rt2800_register_read(rt2x00dev, MAC_CSR0, &reg);
229 if (reg && reg != ~0)
230 break;
231 msleep(1);
232 }
233
234 if (i == REGISTER_BUSY_COUNT) {
235 ERROR(rt2x00dev, "Unstable hardware.\n");
236 return -EBUSY;
237 }
238
239 rt2800_register_write(rt2x00dev, PWR_PIN_CFG, 0x00000002);
240 rt2800_register_write(rt2x00dev, AUTOWAKEUP_CFG, 0x00000000);
241
242 /*
243 * Disable DMA, will be reenabled later when enabling
244 * the radio.
245 */
246 rt2800_register_read(rt2x00dev, WPDMA_GLO_CFG, &reg);
247 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_TX_DMA, 0);
248 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_DMA_BUSY, 0);
249 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_RX_DMA, 0);
250 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_RX_DMA_BUSY, 0);
251 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_WRITEBACK_DONE, 1);
252 rt2800_register_write(rt2x00dev, WPDMA_GLO_CFG, reg);
253
254 /*
255 * enable Host program ram write selection
256 */
257 reg = 0;
258 rt2x00_set_field32(&reg, PBF_SYS_CTRL_HOST_RAM_WRITE, 1);
259 rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, reg);
260
261 /*
262 * Write firmware to device.
263 */
264 rt2800_register_multiwrite(rt2x00dev, FIRMWARE_IMAGE_BASE,
265 data, len);
266
267 rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000);
268 rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00001);
269
270 /*
271 * Wait for device to stabilize.
272 */
273 for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
274 rt2800_register_read(rt2x00dev, PBF_SYS_CTRL, &reg);
275 if (rt2x00_get_field32(reg, PBF_SYS_CTRL_READY))
276 break;
277 msleep(1);
278 }
279
280 if (i == REGISTER_BUSY_COUNT) {
281 ERROR(rt2x00dev, "PBF system register not ready.\n");
282 return -EBUSY;
283 }
284
285 /*
286 * Disable interrupts
287 */
288 rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF);
289
290 /*
291 * Initialize BBP R/W access agent
292 */
293 rt2800_register_write(rt2x00dev, H2M_BBP_AGENT, 0);
294 rt2800_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0);
295
296 return 0;
297}
298
299/*
300 * Initialization functions.
301 */
302static bool rt2800pci_get_entry_state(struct queue_entry *entry)
303{
304 struct queue_entry_priv_pci *entry_priv = entry->priv_data;
305 u32 word;
306
307 if (entry->queue->qid == QID_RX) {
308 rt2x00_desc_read(entry_priv->desc, 1, &word);
309
310 return (!rt2x00_get_field32(word, RXD_W1_DMA_DONE));
311 } else {
312 rt2x00_desc_read(entry_priv->desc, 1, &word);
313
314 return (!rt2x00_get_field32(word, TXD_W1_DMA_DONE));
315 }
316}
317
318static void rt2800pci_clear_entry(struct queue_entry *entry)
319{
320 struct queue_entry_priv_pci *entry_priv = entry->priv_data;
321 struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
322 u32 word;
323
324 if (entry->queue->qid == QID_RX) {
325 rt2x00_desc_read(entry_priv->desc, 0, &word);
326 rt2x00_set_field32(&word, RXD_W0_SDP0, skbdesc->skb_dma);
327 rt2x00_desc_write(entry_priv->desc, 0, word);
328
329 rt2x00_desc_read(entry_priv->desc, 1, &word);
330 rt2x00_set_field32(&word, RXD_W1_DMA_DONE, 0);
331 rt2x00_desc_write(entry_priv->desc, 1, word);
332 } else {
333 rt2x00_desc_read(entry_priv->desc, 1, &word);
334 rt2x00_set_field32(&word, TXD_W1_DMA_DONE, 1);
335 rt2x00_desc_write(entry_priv->desc, 1, word);
336 }
337}
338
339static int rt2800pci_init_queues(struct rt2x00_dev *rt2x00dev)
340{
341 struct queue_entry_priv_pci *entry_priv;
342 u32 reg;
343
344 rt2800_register_read(rt2x00dev, WPDMA_RST_IDX, &reg);
345 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX0, 1);
346 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX1, 1);
347 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX2, 1);
348 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX3, 1);
349 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX4, 1);
350 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX5, 1);
351 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DRX_IDX0, 1);
352 rt2800_register_write(rt2x00dev, WPDMA_RST_IDX, reg);
353
354 rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e1f);
355 rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e00);
356
357 /*
358 * Initialize registers.
359 */
360 entry_priv = rt2x00dev->tx[0].entries[0].priv_data;
361 rt2800_register_write(rt2x00dev, TX_BASE_PTR0, entry_priv->desc_dma);
362 rt2800_register_write(rt2x00dev, TX_MAX_CNT0, rt2x00dev->tx[0].limit);
363 rt2800_register_write(rt2x00dev, TX_CTX_IDX0, 0);
364 rt2800_register_write(rt2x00dev, TX_DTX_IDX0, 0);
365
366 entry_priv = rt2x00dev->tx[1].entries[0].priv_data;
367 rt2800_register_write(rt2x00dev, TX_BASE_PTR1, entry_priv->desc_dma);
368 rt2800_register_write(rt2x00dev, TX_MAX_CNT1, rt2x00dev->tx[1].limit);
369 rt2800_register_write(rt2x00dev, TX_CTX_IDX1, 0);
370 rt2800_register_write(rt2x00dev, TX_DTX_IDX1, 0);
371
372 entry_priv = rt2x00dev->tx[2].entries[0].priv_data;
373 rt2800_register_write(rt2x00dev, TX_BASE_PTR2, entry_priv->desc_dma);
374 rt2800_register_write(rt2x00dev, TX_MAX_CNT2, rt2x00dev->tx[2].limit);
375 rt2800_register_write(rt2x00dev, TX_CTX_IDX2, 0);
376 rt2800_register_write(rt2x00dev, TX_DTX_IDX2, 0);
377
378 entry_priv = rt2x00dev->tx[3].entries[0].priv_data;
379 rt2800_register_write(rt2x00dev, TX_BASE_PTR3, entry_priv->desc_dma);
380 rt2800_register_write(rt2x00dev, TX_MAX_CNT3, rt2x00dev->tx[3].limit);
381 rt2800_register_write(rt2x00dev, TX_CTX_IDX3, 0);
382 rt2800_register_write(rt2x00dev, TX_DTX_IDX3, 0);
383
384 entry_priv = rt2x00dev->rx->entries[0].priv_data;
385 rt2800_register_write(rt2x00dev, RX_BASE_PTR, entry_priv->desc_dma);
386 rt2800_register_write(rt2x00dev, RX_MAX_CNT, rt2x00dev->rx[0].limit);
387 rt2800_register_write(rt2x00dev, RX_CRX_IDX, rt2x00dev->rx[0].limit - 1);
388 rt2800_register_write(rt2x00dev, RX_DRX_IDX, 0);
389
390 /*
391 * Enable global DMA configuration
392 */
393 rt2800_register_read(rt2x00dev, WPDMA_GLO_CFG, &reg);
394 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_TX_DMA, 0);
395 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_RX_DMA, 0);
396 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_WRITEBACK_DONE, 1);
397 rt2800_register_write(rt2x00dev, WPDMA_GLO_CFG, reg);
398
399 rt2800_register_write(rt2x00dev, DELAY_INT_CFG, 0);
400
401 return 0;
402}
403
404/*
405 * Device state switch handlers.
406 */
407static void rt2800pci_toggle_rx(struct rt2x00_dev *rt2x00dev,
408 enum dev_state state)
409{
410 u32 reg;
411
412 rt2800_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
413 rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_RX,
414 (state == STATE_RADIO_RX_ON) ||
415 (state == STATE_RADIO_RX_ON_LINK));
416 rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, reg);
417}
418
419static void rt2800pci_toggle_irq(struct rt2x00_dev *rt2x00dev,
420 enum dev_state state)
421{
422 int mask = (state == STATE_RADIO_IRQ_ON);
423 u32 reg;
424
425 /*
426 * When interrupts are being enabled, the interrupt registers
427 * should clear the register to assure a clean state.
428 */
429 if (state == STATE_RADIO_IRQ_ON) {
430 rt2800_register_read(rt2x00dev, INT_SOURCE_CSR, &reg);
431 rt2800_register_write(rt2x00dev, INT_SOURCE_CSR, reg);
432 }
433
434 rt2800_register_read(rt2x00dev, INT_MASK_CSR, &reg);
435 rt2x00_set_field32(&reg, INT_MASK_CSR_RXDELAYINT, mask);
436 rt2x00_set_field32(&reg, INT_MASK_CSR_TXDELAYINT, mask);
437 rt2x00_set_field32(&reg, INT_MASK_CSR_RX_DONE, mask);
438 rt2x00_set_field32(&reg, INT_MASK_CSR_AC0_DMA_DONE, mask);
439 rt2x00_set_field32(&reg, INT_MASK_CSR_AC1_DMA_DONE, mask);
440 rt2x00_set_field32(&reg, INT_MASK_CSR_AC2_DMA_DONE, mask);
441 rt2x00_set_field32(&reg, INT_MASK_CSR_AC3_DMA_DONE, mask);
442 rt2x00_set_field32(&reg, INT_MASK_CSR_HCCA_DMA_DONE, mask);
443 rt2x00_set_field32(&reg, INT_MASK_CSR_MGMT_DMA_DONE, mask);
444 rt2x00_set_field32(&reg, INT_MASK_CSR_MCU_COMMAND, mask);
445 rt2x00_set_field32(&reg, INT_MASK_CSR_RXTX_COHERENT, mask);
446 rt2x00_set_field32(&reg, INT_MASK_CSR_TBTT, mask);
447 rt2x00_set_field32(&reg, INT_MASK_CSR_PRE_TBTT, mask);
448 rt2x00_set_field32(&reg, INT_MASK_CSR_TX_FIFO_STATUS, mask);
449 rt2x00_set_field32(&reg, INT_MASK_CSR_AUTO_WAKEUP, mask);
450 rt2x00_set_field32(&reg, INT_MASK_CSR_GPTIMER, mask);
451 rt2x00_set_field32(&reg, INT_MASK_CSR_RX_COHERENT, mask);
452 rt2x00_set_field32(&reg, INT_MASK_CSR_TX_COHERENT, mask);
453 rt2800_register_write(rt2x00dev, INT_MASK_CSR, reg);
454}
455
456static int rt2800pci_enable_radio(struct rt2x00_dev *rt2x00dev)
457{
458 u32 reg;
459 u16 word;
460
461 /*
462 * Initialize all registers.
463 */
464 if (unlikely(rt2800_wait_wpdma_ready(rt2x00dev) ||
465 rt2800pci_init_queues(rt2x00dev) ||
466 rt2800_init_registers(rt2x00dev) ||
467 rt2800_wait_wpdma_ready(rt2x00dev) ||
468 rt2800_init_bbp(rt2x00dev) ||
469 rt2800_init_rfcsr(rt2x00dev)))
470 return -EIO;
471
472 /*
473 * Send signal to firmware during boot time.
474 */
475 rt2800_mcu_request(rt2x00dev, MCU_BOOT_SIGNAL, 0xff, 0, 0);
476
477 /*
478 * Enable RX.
479 */
480 rt2800_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
481 rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_TX, 1);
482 rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_RX, 0);
483 rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, reg);
484
485 rt2800_register_read(rt2x00dev, WPDMA_GLO_CFG, &reg);
486 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_TX_DMA, 1);
487 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_RX_DMA, 1);
488 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_WP_DMA_BURST_SIZE, 2);
489 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_WRITEBACK_DONE, 1);
490 rt2800_register_write(rt2x00dev, WPDMA_GLO_CFG, reg);
491
492 rt2800_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
493 rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_TX, 1);
494 rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_RX, 1);
495 rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, reg);
496
497 /*
498 * Initialize LED control
499 */
500 rt2x00_eeprom_read(rt2x00dev, EEPROM_LED1, &word);
501 rt2800_mcu_request(rt2x00dev, MCU_LED_1, 0xff,
502 word & 0xff, (word >> 8) & 0xff);
503
504 rt2x00_eeprom_read(rt2x00dev, EEPROM_LED2, &word);
505 rt2800_mcu_request(rt2x00dev, MCU_LED_2, 0xff,
506 word & 0xff, (word >> 8) & 0xff);
507
508 rt2x00_eeprom_read(rt2x00dev, EEPROM_LED3, &word);
509 rt2800_mcu_request(rt2x00dev, MCU_LED_3, 0xff,
510 word & 0xff, (word >> 8) & 0xff);
511
512 return 0;
513}
514
515static void rt2800pci_disable_radio(struct rt2x00_dev *rt2x00dev)
516{
517 u32 reg;
518
519 rt2800_register_read(rt2x00dev, WPDMA_GLO_CFG, &reg);
520 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_TX_DMA, 0);
521 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_DMA_BUSY, 0);
522 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_RX_DMA, 0);
523 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_RX_DMA_BUSY, 0);
524 rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_WRITEBACK_DONE, 1);
525 rt2800_register_write(rt2x00dev, WPDMA_GLO_CFG, reg);
526
527 rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, 0);
528 rt2800_register_write(rt2x00dev, PWR_PIN_CFG, 0);
529 rt2800_register_write(rt2x00dev, TX_PIN_CFG, 0);
530
531 rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00001280);
532
533 rt2800_register_read(rt2x00dev, WPDMA_RST_IDX, &reg);
534 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX0, 1);
535 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX1, 1);
536 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX2, 1);
537 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX3, 1);
538 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX4, 1);
539 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX5, 1);
540 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DRX_IDX0, 1);
541 rt2800_register_write(rt2x00dev, WPDMA_RST_IDX, reg);
542
543 rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e1f);
544 rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e00);
545
546 /* Wait for DMA, ignore error */
547 rt2800_wait_wpdma_ready(rt2x00dev);
548}
549
550static int rt2800pci_set_state(struct rt2x00_dev *rt2x00dev,
551 enum dev_state state)
552{
553 /*
554 * Always put the device to sleep (even when we intend to wakeup!)
555 * if the device is booting and wasn't asleep it will return
556 * failure when attempting to wakeup.
557 */
558 rt2800_mcu_request(rt2x00dev, MCU_SLEEP, 0xff, 0, 2);
559
560 if (state == STATE_AWAKE) {
561 rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKUP, 0, 0);
562 rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKUP);
563 }
564
565 return 0;
566}
567
568static int rt2800pci_set_device_state(struct rt2x00_dev *rt2x00dev,
569 enum dev_state state)
570{
571 int retval = 0;
572
573 switch (state) {
574 case STATE_RADIO_ON:
575 /*
576 * Before the radio can be enabled, the device first has
577 * to be woken up. After that it needs a bit of time
578 * to be fully awake and then the radio can be enabled.
579 */
580 rt2800pci_set_state(rt2x00dev, STATE_AWAKE);
581 msleep(1);
582 retval = rt2800pci_enable_radio(rt2x00dev);
583 break;
584 case STATE_RADIO_OFF:
585 /*
586 * After the radio has been disabled, the device should
587 * be put to sleep for powersaving.
588 */
589 rt2800pci_disable_radio(rt2x00dev);
590 rt2800pci_set_state(rt2x00dev, STATE_SLEEP);
591 break;
592 case STATE_RADIO_RX_ON:
593 case STATE_RADIO_RX_ON_LINK:
594 case STATE_RADIO_RX_OFF:
595 case STATE_RADIO_RX_OFF_LINK:
596 rt2800pci_toggle_rx(rt2x00dev, state);
597 break;
598 case STATE_RADIO_IRQ_ON:
599 case STATE_RADIO_IRQ_OFF:
600 rt2800pci_toggle_irq(rt2x00dev, state);
601 break;
602 case STATE_DEEP_SLEEP:
603 case STATE_SLEEP:
604 case STATE_STANDBY:
605 case STATE_AWAKE:
606 retval = rt2800pci_set_state(rt2x00dev, state);
607 break;
608 default:
609 retval = -ENOTSUPP;
610 break;
611 }
612
613 if (unlikely(retval))
614 ERROR(rt2x00dev, "Device failed to enter state %d (%d).\n",
615 state, retval);
616
617 return retval;
618}
619
620/*
621 * TX descriptor initialization
622 */
623static void rt2800pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
624 struct sk_buff *skb,
625 struct txentry_desc *txdesc)
626{
627 struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
628 __le32 *txd = skbdesc->desc;
629 __le32 *txwi = (__le32 *)(skb->data - rt2x00dev->ops->extra_tx_headroom);
630 u32 word;
631
632 /*
633 * Initialize TX Info descriptor
634 */
635 rt2x00_desc_read(txwi, 0, &word);
636 rt2x00_set_field32(&word, TXWI_W0_FRAG,
637 test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
638 rt2x00_set_field32(&word, TXWI_W0_MIMO_PS, 0);
639 rt2x00_set_field32(&word, TXWI_W0_CF_ACK, 0);
640 rt2x00_set_field32(&word, TXWI_W0_TS,
641 test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
642 rt2x00_set_field32(&word, TXWI_W0_AMPDU,
643 test_bit(ENTRY_TXD_HT_AMPDU, &txdesc->flags));
644 rt2x00_set_field32(&word, TXWI_W0_MPDU_DENSITY, txdesc->mpdu_density);
645 rt2x00_set_field32(&word, TXWI_W0_TX_OP, txdesc->ifs);
646 rt2x00_set_field32(&word, TXWI_W0_MCS, txdesc->mcs);
647 rt2x00_set_field32(&word, TXWI_W0_BW,
648 test_bit(ENTRY_TXD_HT_BW_40, &txdesc->flags));
649 rt2x00_set_field32(&word, TXWI_W0_SHORT_GI,
650 test_bit(ENTRY_TXD_HT_SHORT_GI, &txdesc->flags));
651 rt2x00_set_field32(&word, TXWI_W0_STBC, txdesc->stbc);
652 rt2x00_set_field32(&word, TXWI_W0_PHYMODE, txdesc->rate_mode);
653 rt2x00_desc_write(txwi, 0, word);
654
655 rt2x00_desc_read(txwi, 1, &word);
656 rt2x00_set_field32(&word, TXWI_W1_ACK,
657 test_bit(ENTRY_TXD_ACK, &txdesc->flags));
658 rt2x00_set_field32(&word, TXWI_W1_NSEQ,
659 test_bit(ENTRY_TXD_GENERATE_SEQ, &txdesc->flags));
660 rt2x00_set_field32(&word, TXWI_W1_BW_WIN_SIZE, txdesc->ba_size);
661 rt2x00_set_field32(&word, TXWI_W1_WIRELESS_CLI_ID,
662 test_bit(ENTRY_TXD_ENCRYPT, &txdesc->flags) ?
663 txdesc->key_idx : 0xff);
664 rt2x00_set_field32(&word, TXWI_W1_MPDU_TOTAL_BYTE_COUNT,
665 skb->len - txdesc->l2pad);
666 rt2x00_set_field32(&word, TXWI_W1_PACKETID,
667 skbdesc->entry->queue->qid + 1);
668 rt2x00_desc_write(txwi, 1, word);
669
670 /*
671 * Always write 0 to IV/EIV fields, hardware will insert the IV
672 * from the IVEIV register when TXD_W3_WIV is set to 0.
673 * When TXD_W3_WIV is set to 1 it will use the IV data
674 * from the descriptor. The TXWI_W1_WIRELESS_CLI_ID indicates which
675 * crypto entry in the registers should be used to encrypt the frame.
676 */
677 _rt2x00_desc_write(txwi, 2, 0 /* skbdesc->iv[0] */);
678 _rt2x00_desc_write(txwi, 3, 0 /* skbdesc->iv[1] */);
679
680 /*
681 * The buffers pointed by SD_PTR0/SD_LEN0 and SD_PTR1/SD_LEN1
682 * must contains a TXWI structure + 802.11 header + padding + 802.11
683 * data. We choose to have SD_PTR0/SD_LEN0 only contains TXWI and
684 * SD_PTR1/SD_LEN1 contains 802.11 header + padding + 802.11
685 * data. It means that LAST_SEC0 is always 0.
686 */
687
688 /*
689 * Initialize TX descriptor
690 */
691 rt2x00_desc_read(txd, 0, &word);
692 rt2x00_set_field32(&word, TXD_W0_SD_PTR0, skbdesc->skb_dma);
693 rt2x00_desc_write(txd, 0, word);
694
695 rt2x00_desc_read(txd, 1, &word);
696 rt2x00_set_field32(&word, TXD_W1_SD_LEN1, skb->len);
697 rt2x00_set_field32(&word, TXD_W1_LAST_SEC1,
698 !test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
699 rt2x00_set_field32(&word, TXD_W1_BURST,
700 test_bit(ENTRY_TXD_BURST, &txdesc->flags));
701 rt2x00_set_field32(&word, TXD_W1_SD_LEN0,
702 rt2x00dev->ops->extra_tx_headroom);
703 rt2x00_set_field32(&word, TXD_W1_LAST_SEC0, 0);
704 rt2x00_set_field32(&word, TXD_W1_DMA_DONE, 0);
705 rt2x00_desc_write(txd, 1, word);
706
707 rt2x00_desc_read(txd, 2, &word);
708 rt2x00_set_field32(&word, TXD_W2_SD_PTR1,
709 skbdesc->skb_dma + rt2x00dev->ops->extra_tx_headroom);
710 rt2x00_desc_write(txd, 2, word);
711
712 rt2x00_desc_read(txd, 3, &word);
713 rt2x00_set_field32(&word, TXD_W3_WIV,
714 !test_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc->flags));
715 rt2x00_set_field32(&word, TXD_W3_QSEL, 2);
716 rt2x00_desc_write(txd, 3, word);
717}
718
719/*
720 * TX data initialization
721 */
722static void rt2800pci_write_beacon(struct queue_entry *entry)
723{
724 struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
725 struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
726 unsigned int beacon_base;
727 u32 reg;
728
729 /*
730 * Disable beaconing while we are reloading the beacon data,
731 * otherwise we might be sending out invalid data.
732 */
733 rt2800_register_read(rt2x00dev, BCN_TIME_CFG, &reg);
734 rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_GEN, 0);
735 rt2800_register_write(rt2x00dev, BCN_TIME_CFG, reg);
736
737 /*
738 * Write entire beacon with descriptor to register.
739 */
740 beacon_base = HW_BEACON_OFFSET(entry->entry_idx);
741 rt2800_register_multiwrite(rt2x00dev,
742 beacon_base,
743 skbdesc->desc, skbdesc->desc_len);
744 rt2800_register_multiwrite(rt2x00dev,
745 beacon_base + skbdesc->desc_len,
746 entry->skb->data, entry->skb->len);
747
748 /*
749 * Clean up beacon skb.
750 */
751 dev_kfree_skb_any(entry->skb);
752 entry->skb = NULL;
753}
754
755static void rt2800pci_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
756 const enum data_queue_qid queue_idx)
757{
758 struct data_queue *queue;
759 unsigned int idx, qidx = 0;
760 u32 reg;
761
762 if (queue_idx == QID_BEACON) {
763 rt2800_register_read(rt2x00dev, BCN_TIME_CFG, &reg);
764 if (!rt2x00_get_field32(reg, BCN_TIME_CFG_BEACON_GEN)) {
765 rt2x00_set_field32(&reg, BCN_TIME_CFG_TSF_TICKING, 1);
766 rt2x00_set_field32(&reg, BCN_TIME_CFG_TBTT_ENABLE, 1);
767 rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_GEN, 1);
768 rt2800_register_write(rt2x00dev, BCN_TIME_CFG, reg);
769 }
770 return;
771 }
772
773 if (queue_idx > QID_HCCA && queue_idx != QID_MGMT)
774 return;
775
776 queue = rt2x00queue_get_queue(rt2x00dev, queue_idx);
777 idx = queue->index[Q_INDEX];
778
779 if (queue_idx == QID_MGMT)
780 qidx = 5;
781 else
782 qidx = queue_idx;
783
784 rt2800_register_write(rt2x00dev, TX_CTX_IDX(qidx), idx);
785}
786
787static void rt2800pci_kill_tx_queue(struct rt2x00_dev *rt2x00dev,
788 const enum data_queue_qid qid)
789{
790 u32 reg;
791
792 if (qid == QID_BEACON) {
793 rt2800_register_write(rt2x00dev, BCN_TIME_CFG, 0);
794 return;
795 }
796
797 rt2800_register_read(rt2x00dev, WPDMA_RST_IDX, &reg);
798 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX0, (qid == QID_AC_BE));
799 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX1, (qid == QID_AC_BK));
800 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX2, (qid == QID_AC_VI));
801 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX3, (qid == QID_AC_VO));
802 rt2800_register_write(rt2x00dev, WPDMA_RST_IDX, reg);
803}
804
805/*
806 * RX control handlers
807 */
808static void rt2800pci_fill_rxdone(struct queue_entry *entry,
809 struct rxdone_entry_desc *rxdesc)
810{
811 struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
812 struct queue_entry_priv_pci *entry_priv = entry->priv_data;
813 __le32 *rxd = entry_priv->desc;
814 __le32 *rxwi = (__le32 *)entry->skb->data;
815 u32 rxd3;
816 u32 rxwi0;
817 u32 rxwi1;
818 u32 rxwi2;
819 u32 rxwi3;
820
821 rt2x00_desc_read(rxd, 3, &rxd3);
822 rt2x00_desc_read(rxwi, 0, &rxwi0);
823 rt2x00_desc_read(rxwi, 1, &rxwi1);
824 rt2x00_desc_read(rxwi, 2, &rxwi2);
825 rt2x00_desc_read(rxwi, 3, &rxwi3);
826
827 if (rt2x00_get_field32(rxd3, RXD_W3_CRC_ERROR))
828 rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
829
830 if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) {
831 /*
832 * Unfortunately we don't know the cipher type used during
833 * decryption. This prevents us from correct providing
834 * correct statistics through debugfs.
835 */
836 rxdesc->cipher = rt2x00_get_field32(rxwi0, RXWI_W0_UDF);
837 rxdesc->cipher_status =
838 rt2x00_get_field32(rxd3, RXD_W3_CIPHER_ERROR);
839 }
840
841 if (rt2x00_get_field32(rxd3, RXD_W3_DECRYPTED)) {
842 /*
843 * Hardware has stripped IV/EIV data from 802.11 frame during
844 * decryption. Unfortunately the descriptor doesn't contain
845 * any fields with the EIV/IV data either, so they can't
846 * be restored by rt2x00lib.
847 */
848 rxdesc->flags |= RX_FLAG_IV_STRIPPED;
849
850 if (rxdesc->cipher_status == RX_CRYPTO_SUCCESS)
851 rxdesc->flags |= RX_FLAG_DECRYPTED;
852 else if (rxdesc->cipher_status == RX_CRYPTO_FAIL_MIC)
853 rxdesc->flags |= RX_FLAG_MMIC_ERROR;
854 }
855
856 if (rt2x00_get_field32(rxd3, RXD_W3_MY_BSS))
857 rxdesc->dev_flags |= RXDONE_MY_BSS;
858
859 if (rt2x00_get_field32(rxd3, RXD_W3_L2PAD))
860 rxdesc->dev_flags |= RXDONE_L2PAD;
861
862 if (rt2x00_get_field32(rxwi1, RXWI_W1_SHORT_GI))
863 rxdesc->flags |= RX_FLAG_SHORT_GI;
864
865 if (rt2x00_get_field32(rxwi1, RXWI_W1_BW))
866 rxdesc->flags |= RX_FLAG_40MHZ;
867
868 /*
869 * Detect RX rate, always use MCS as signal type.
870 */
871 rxdesc->dev_flags |= RXDONE_SIGNAL_MCS;
872 rxdesc->rate_mode = rt2x00_get_field32(rxwi1, RXWI_W1_PHYMODE);
873 rxdesc->signal = rt2x00_get_field32(rxwi1, RXWI_W1_MCS);
874
875 /*
876 * Mask of 0x8 bit to remove the short preamble flag.
877 */
878 if (rxdesc->rate_mode == RATE_MODE_CCK)
879 rxdesc->signal &= ~0x8;
880
881 rxdesc->rssi =
882 (rt2x00_get_field32(rxwi2, RXWI_W2_RSSI0) +
883 rt2x00_get_field32(rxwi2, RXWI_W2_RSSI1)) / 2;
884
885 rxdesc->noise =
886 (rt2x00_get_field32(rxwi3, RXWI_W3_SNR0) +
887 rt2x00_get_field32(rxwi3, RXWI_W3_SNR1)) / 2;
888
889 rxdesc->size = rt2x00_get_field32(rxwi0, RXWI_W0_MPDU_TOTAL_BYTE_COUNT);
890
891 /*
892 * Set RX IDX in register to inform hardware that we have handled
893 * this entry and it is available for reuse again.
894 */
895 rt2800_register_write(rt2x00dev, RX_CRX_IDX, entry->entry_idx);
896
897 /*
898 * Remove TXWI descriptor from start of buffer.
899 */
900 skb_pull(entry->skb, RXWI_DESC_SIZE);
901}
902
903/*
904 * Interrupt functions.
905 */
906static void rt2800pci_txdone(struct rt2x00_dev *rt2x00dev)
907{
908 struct data_queue *queue;
909 struct queue_entry *entry;
910 struct queue_entry *entry_done;
911 struct queue_entry_priv_pci *entry_priv;
912 struct txdone_entry_desc txdesc;
913 u32 word;
914 u32 reg;
915 u32 old_reg;
916 unsigned int type;
917 unsigned int index;
918 u16 mcs, real_mcs;
919
920 /*
921 * During each loop we will compare the freshly read
922 * TX_STA_FIFO register value with the value read from
923 * the previous loop. If the 2 values are equal then
924 * we should stop processing because the chance it
925 * quite big that the device has been unplugged and
926 * we risk going into an endless loop.
927 */
928 old_reg = 0;
929
930 while (1) {
931 rt2800_register_read(rt2x00dev, TX_STA_FIFO, &reg);
932 if (!rt2x00_get_field32(reg, TX_STA_FIFO_VALID))
933 break;
934
935 if (old_reg == reg)
936 break;
937 old_reg = reg;
938
939 /*
940 * Skip this entry when it contains an invalid
941 * queue identication number.
942 */
943 type = rt2x00_get_field32(reg, TX_STA_FIFO_PID_TYPE) - 1;
944 if (type >= QID_RX)
945 continue;
946
947 queue = rt2x00queue_get_queue(rt2x00dev, type);
948 if (unlikely(!queue))
949 continue;
950
951 /*
952 * Skip this entry when it contains an invalid
953 * index number.
954 */
955 index = rt2x00_get_field32(reg, TX_STA_FIFO_WCID) - 1;
956 if (unlikely(index >= queue->limit))
957 continue;
958
959 entry = &queue->entries[index];
960 entry_priv = entry->priv_data;
961 rt2x00_desc_read((__le32 *)entry->skb->data, 0, &word);
962
963 entry_done = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
964 while (entry != entry_done) {
965 /*
966 * Catch up.
967 * Just report any entries we missed as failed.
968 */
969 WARNING(rt2x00dev,
970 "TX status report missed for entry %d\n",
971 entry_done->entry_idx);
972
973 txdesc.flags = 0;
974 __set_bit(TXDONE_UNKNOWN, &txdesc.flags);
975 txdesc.retry = 0;
976
977 rt2x00lib_txdone(entry_done, &txdesc);
978 entry_done = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
979 }
980
981 /*
982 * Obtain the status about this packet.
983 */
984 txdesc.flags = 0;
985 if (rt2x00_get_field32(reg, TX_STA_FIFO_TX_SUCCESS))
986 __set_bit(TXDONE_SUCCESS, &txdesc.flags);
987 else
988 __set_bit(TXDONE_FAILURE, &txdesc.flags);
989
990 /*
991 * Ralink has a retry mechanism using a global fallback
992 * table. We setup this fallback table to try immediate
993 * lower rate for all rates. In the TX_STA_FIFO,
994 * the MCS field contains the MCS used for the successfull
995 * transmission. If the first transmission succeed,
996 * we have mcs == tx_mcs. On the second transmission,
997 * we have mcs = tx_mcs - 1. So the number of
998 * retry is (tx_mcs - mcs).
999 */
1000 mcs = rt2x00_get_field32(word, TXWI_W0_MCS);
1001 real_mcs = rt2x00_get_field32(reg, TX_STA_FIFO_MCS);
1002 __set_bit(TXDONE_FALLBACK, &txdesc.flags);
1003 txdesc.retry = mcs - min(mcs, real_mcs);
1004
1005 rt2x00lib_txdone(entry, &txdesc);
1006 }
1007}
1008
1009static irqreturn_t rt2800pci_interrupt(int irq, void *dev_instance)
1010{
1011 struct rt2x00_dev *rt2x00dev = dev_instance;
1012 u32 reg;
1013
1014 /* Read status and ACK all interrupts */
1015 rt2800_register_read(rt2x00dev, INT_SOURCE_CSR, &reg);
1016 rt2800_register_write(rt2x00dev, INT_SOURCE_CSR, reg);
1017
1018 if (!reg)
1019 return IRQ_NONE;
1020
1021 if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
1022 return IRQ_HANDLED;
1023
1024 /*
1025 * 1 - Rx ring done interrupt.
1026 */
1027 if (rt2x00_get_field32(reg, INT_SOURCE_CSR_RX_DONE))
1028 rt2x00pci_rxdone(rt2x00dev);
1029
1030 if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TX_FIFO_STATUS))
1031 rt2800pci_txdone(rt2x00dev);
1032
1033 return IRQ_HANDLED;
1034}
1035
1036/*
1037 * Device probe functions.
1038 */
1039static int rt2800pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
1040{
1041 /*
1042 * Read EEPROM into buffer
1043 */
1044 if (rt2x00_is_soc(rt2x00dev))
1045 rt2800pci_read_eeprom_soc(rt2x00dev);
1046 else if (rt2800pci_efuse_detect(rt2x00dev))
1047 rt2800pci_read_eeprom_efuse(rt2x00dev);
1048 else
1049 rt2800pci_read_eeprom_pci(rt2x00dev);
1050
1051 return rt2800_validate_eeprom(rt2x00dev);
1052}
1053
1054static const struct rt2800_ops rt2800pci_rt2800_ops = {
1055 .register_read = rt2x00pci_register_read,
1056 .register_read_lock = rt2x00pci_register_read, /* same for PCI */
1057 .register_write = rt2x00pci_register_write,
1058 .register_write_lock = rt2x00pci_register_write, /* same for PCI */
1059
1060 .register_multiread = rt2x00pci_register_multiread,
1061 .register_multiwrite = rt2x00pci_register_multiwrite,
1062
1063 .regbusy_read = rt2x00pci_regbusy_read,
1064};
1065
1066static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
1067{
1068 int retval;
1069
1070 rt2x00dev->priv = (void *)&rt2800pci_rt2800_ops;
1071
1072 /*
1073 * Allocate eeprom data.
1074 */
1075 retval = rt2800pci_validate_eeprom(rt2x00dev);
1076 if (retval)
1077 return retval;
1078
1079 retval = rt2800_init_eeprom(rt2x00dev);
1080 if (retval)
1081 return retval;
1082
1083 /*
1084 * Initialize hw specifications.
1085 */
1086 retval = rt2800_probe_hw_mode(rt2x00dev);
1087 if (retval)
1088 return retval;
1089
1090 /*
1091 * This device has multiple filters for control frames
1092 * and has a separate filter for PS Poll frames.
1093 */
1094 __set_bit(DRIVER_SUPPORT_CONTROL_FILTERS, &rt2x00dev->flags);
1095 __set_bit(DRIVER_SUPPORT_CONTROL_FILTER_PSPOLL, &rt2x00dev->flags);
1096
1097 /*
1098 * This device requires firmware.
1099 */
1100 if (!rt2x00_is_soc(rt2x00dev))
1101 __set_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags);
1102 __set_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags);
1103 __set_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags);
1104 if (!modparam_nohwcrypt)
1105 __set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);
1106
1107 /*
1108 * Set the rssi offset.
1109 */
1110 rt2x00dev->rssi_offset = DEFAULT_RSSI_OFFSET;
1111
1112 return 0;
1113}
1114
1115static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = {
1116 .irq_handler = rt2800pci_interrupt,
1117 .probe_hw = rt2800pci_probe_hw,
1118 .get_firmware_name = rt2800pci_get_firmware_name,
1119 .check_firmware = rt2800pci_check_firmware,
1120 .load_firmware = rt2800pci_load_firmware,
1121 .initialize = rt2x00pci_initialize,
1122 .uninitialize = rt2x00pci_uninitialize,
1123 .get_entry_state = rt2800pci_get_entry_state,
1124 .clear_entry = rt2800pci_clear_entry,
1125 .set_device_state = rt2800pci_set_device_state,
1126 .rfkill_poll = rt2800_rfkill_poll,
1127 .link_stats = rt2800_link_stats,
1128 .reset_tuner = rt2800_reset_tuner,
1129 .link_tuner = rt2800_link_tuner,
1130 .write_tx_desc = rt2800pci_write_tx_desc,
1131 .write_tx_data = rt2x00pci_write_tx_data,
1132 .write_beacon = rt2800pci_write_beacon,
1133 .kick_tx_queue = rt2800pci_kick_tx_queue,
1134 .kill_tx_queue = rt2800pci_kill_tx_queue,
1135 .fill_rxdone = rt2800pci_fill_rxdone,
1136 .config_shared_key = rt2800_config_shared_key,
1137 .config_pairwise_key = rt2800_config_pairwise_key,
1138 .config_filter = rt2800_config_filter,
1139 .config_intf = rt2800_config_intf,
1140 .config_erp = rt2800_config_erp,
1141 .config_ant = rt2800_config_ant,
1142 .config = rt2800_config,
1143};
1144
1145static const struct data_queue_desc rt2800pci_queue_rx = {
1146 .entry_num = RX_ENTRIES,
1147 .data_size = AGGREGATION_SIZE,
1148 .desc_size = RXD_DESC_SIZE,
1149 .priv_size = sizeof(struct queue_entry_priv_pci),
1150};
1151
1152static const struct data_queue_desc rt2800pci_queue_tx = {
1153 .entry_num = TX_ENTRIES,
1154 .data_size = AGGREGATION_SIZE,
1155 .desc_size = TXD_DESC_SIZE,
1156 .priv_size = sizeof(struct queue_entry_priv_pci),
1157};
1158
1159static const struct data_queue_desc rt2800pci_queue_bcn = {
1160 .entry_num = 8 * BEACON_ENTRIES,
1161 .data_size = 0, /* No DMA required for beacons */
1162 .desc_size = TXWI_DESC_SIZE,
1163 .priv_size = sizeof(struct queue_entry_priv_pci),
1164};
1165
1166static const struct rt2x00_ops rt2800pci_ops = {
1167 .name = KBUILD_MODNAME,
1168 .max_sta_intf = 1,
1169 .max_ap_intf = 8,
1170 .eeprom_size = EEPROM_SIZE,
1171 .rf_size = RF_SIZE,
1172 .tx_queues = NUM_TX_QUEUES,
1173 .extra_tx_headroom = TXWI_DESC_SIZE,
1174 .rx = &rt2800pci_queue_rx,
1175 .tx = &rt2800pci_queue_tx,
1176 .bcn = &rt2800pci_queue_bcn,
1177 .lib = &rt2800pci_rt2x00_ops,
1178 .hw = &rt2800_mac80211_ops,
1179#ifdef CONFIG_RT2X00_LIB_DEBUGFS
1180 .debugfs = &rt2800_rt2x00debug,
1181#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
1182};
1183
1184/*
1185 * RT2800pci module information.
1186 */
1187static DEFINE_PCI_DEVICE_TABLE(rt2800pci_device_table) = {
1188 { PCI_DEVICE(0x1814, 0x0601), PCI_DEVICE_DATA(&rt2800pci_ops) },
1189 { PCI_DEVICE(0x1814, 0x0681), PCI_DEVICE_DATA(&rt2800pci_ops) },
1190 { PCI_DEVICE(0x1814, 0x0701), PCI_DEVICE_DATA(&rt2800pci_ops) },
1191 { PCI_DEVICE(0x1814, 0x0781), PCI_DEVICE_DATA(&rt2800pci_ops) },
1192 { PCI_DEVICE(0x1432, 0x7708), PCI_DEVICE_DATA(&rt2800pci_ops) },
1193 { PCI_DEVICE(0x1432, 0x7727), PCI_DEVICE_DATA(&rt2800pci_ops) },
1194 { PCI_DEVICE(0x1432, 0x7728), PCI_DEVICE_DATA(&rt2800pci_ops) },
1195 { PCI_DEVICE(0x1432, 0x7738), PCI_DEVICE_DATA(&rt2800pci_ops) },
1196 { PCI_DEVICE(0x1432, 0x7748), PCI_DEVICE_DATA(&rt2800pci_ops) },
1197 { PCI_DEVICE(0x1432, 0x7758), PCI_DEVICE_DATA(&rt2800pci_ops) },
1198 { PCI_DEVICE(0x1432, 0x7768), PCI_DEVICE_DATA(&rt2800pci_ops) },
1199 { PCI_DEVICE(0x1a3b, 0x1059), PCI_DEVICE_DATA(&rt2800pci_ops) },
1200#ifdef CONFIG_RT2800PCI_RT30XX
1201 { PCI_DEVICE(0x1814, 0x3090), PCI_DEVICE_DATA(&rt2800pci_ops) },
1202 { PCI_DEVICE(0x1814, 0x3091), PCI_DEVICE_DATA(&rt2800pci_ops) },
1203 { PCI_DEVICE(0x1814, 0x3092), PCI_DEVICE_DATA(&rt2800pci_ops) },
1204 { PCI_DEVICE(0x1462, 0x891a), PCI_DEVICE_DATA(&rt2800pci_ops) },
1205#endif
1206#ifdef CONFIG_RT2800PCI_RT35XX
1207 { PCI_DEVICE(0x1814, 0x3060), PCI_DEVICE_DATA(&rt2800pci_ops) },
1208 { PCI_DEVICE(0x1814, 0x3062), PCI_DEVICE_DATA(&rt2800pci_ops) },
1209 { PCI_DEVICE(0x1814, 0x3562), PCI_DEVICE_DATA(&rt2800pci_ops) },
1210 { PCI_DEVICE(0x1814, 0x3592), PCI_DEVICE_DATA(&rt2800pci_ops) },
1211#endif
1212 { 0, }
1213};
1214
1215MODULE_AUTHOR(DRV_PROJECT);
1216MODULE_VERSION(DRV_VERSION);
1217MODULE_DESCRIPTION("Ralink RT2800 PCI & PCMCIA Wireless LAN driver.");
1218MODULE_SUPPORTED_DEVICE("Ralink RT2860 PCI & PCMCIA chipset based cards");
1219#ifdef CONFIG_RT2800PCI_PCI
1220MODULE_FIRMWARE(FIRMWARE_RT2860);
1221MODULE_DEVICE_TABLE(pci, rt2800pci_device_table);
1222#endif /* CONFIG_RT2800PCI_PCI */
1223MODULE_LICENSE("GPL");
1224
1225#ifdef CONFIG_RT2800PCI_SOC
1226static int rt2800soc_probe(struct platform_device *pdev)
1227{
1228 return rt2x00soc_probe(pdev, &rt2800pci_ops);
1229}
1230
1231static struct platform_driver rt2800soc_driver = {
1232 .driver = {
1233 .name = "rt2800_wmac",
1234 .owner = THIS_MODULE,
1235 .mod_name = KBUILD_MODNAME,
1236 },
1237 .probe = rt2800soc_probe,
1238 .remove = __devexit_p(rt2x00soc_remove),
1239 .suspend = rt2x00soc_suspend,
1240 .resume = rt2x00soc_resume,
1241};
1242#endif /* CONFIG_RT2800PCI_SOC */
1243
1244#ifdef CONFIG_RT2800PCI_PCI
1245static struct pci_driver rt2800pci_driver = {
1246 .name = KBUILD_MODNAME,
1247 .id_table = rt2800pci_device_table,
1248 .probe = rt2x00pci_probe,
1249 .remove = __devexit_p(rt2x00pci_remove),
1250 .suspend = rt2x00pci_suspend,
1251 .resume = rt2x00pci_resume,
1252};
1253#endif /* CONFIG_RT2800PCI_PCI */
1254
1255static int __init rt2800pci_init(void)
1256{
1257 int ret = 0;
1258
1259#ifdef CONFIG_RT2800PCI_SOC
1260 ret = platform_driver_register(&rt2800soc_driver);
1261 if (ret)
1262 return ret;
1263#endif
1264#ifdef CONFIG_RT2800PCI_PCI
1265 ret = pci_register_driver(&rt2800pci_driver);
1266 if (ret) {
1267#ifdef CONFIG_RT2800PCI_SOC
1268 platform_driver_unregister(&rt2800soc_driver);
1269#endif
1270 return ret;
1271 }
1272#endif
1273
1274 return ret;
1275}
1276
1277static void __exit rt2800pci_exit(void)
1278{
1279#ifdef CONFIG_RT2800PCI_PCI
1280 pci_unregister_driver(&rt2800pci_driver);
1281#endif
1282#ifdef CONFIG_RT2800PCI_SOC
1283 platform_driver_unregister(&rt2800soc_driver);
1284#endif
1285}
1286
1287module_init(rt2800pci_init);
1288module_exit(rt2800pci_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2025-07-29 16:27:26 -0400