1 /* $OpenBSD: if_urtwn.c,v 1.16 2011/02/10 17:26:40 jakemsr Exp $ */
4 * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
5 * Copyright (c) 2014 Kevin Lo <kevlo@FreeBSD.org>
6 * Copyright (c) 2016 Andriy Voskoboinyk <avos@FreeBSD.org>
8 * Permission to use, copy, modify, and distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 #include <sys/cdefs.h>
22 __FBSDID("$FreeBSD$");
24 #include <sys/param.h>
25 #include <sys/sysctl.h>
27 #include <sys/mutex.h>
29 #include <sys/kernel.h>
30 #include <sys/socket.h>
31 #include <sys/systm.h>
32 #include <sys/malloc.h>
33 #include <sys/module.h>
35 #include <sys/endian.h>
36 #include <sys/linker.h>
39 #include <machine/bus.h>
40 #include <machine/resource.h>
43 #include <dev/pci/pcireg.h>
44 #include <dev/pci/pcivar.h>
47 #include <net/ethernet.h>
48 #include <net/if_media.h>
50 #include <net80211/ieee80211_var.h>
52 #include <dev/rtwn/if_rtwnreg.h>
53 #include <dev/rtwn/if_rtwnvar.h>
54 #include <dev/rtwn/if_rtwn_nop.h>
55 #include <dev/rtwn/if_rtwn_debug.h>
57 #include <dev/rtwn/pci/rtwn_pci_var.h>
59 #include <dev/rtwn/pci/rtwn_pci_attach.h>
60 #include <dev/rtwn/pci/rtwn_pci_reg.h>
61 #include <dev/rtwn/pci/rtwn_pci_rx.h>
62 #include <dev/rtwn/pci/rtwn_pci_tx.h>
64 #include <dev/rtwn/rtl8192c/pci/r92ce_reg.h>
65 #include <dev/rtwn/rtl8192c/pci/r92ce_rx_desc.h>
68 static device_probe_t rtwn_pci_probe;
69 static device_attach_t rtwn_pci_attach;
70 static device_detach_t rtwn_pci_detach;
71 static device_shutdown_t rtwn_pci_shutdown;
72 static device_suspend_t rtwn_pci_suspend;
73 static device_resume_t rtwn_pci_resume;
75 static int rtwn_pci_alloc_rx_list(struct rtwn_softc *);
76 static void rtwn_pci_reset_rx_list(struct rtwn_softc *);
77 static void rtwn_pci_free_rx_list(struct rtwn_softc *);
78 static int rtwn_pci_alloc_tx_list(struct rtwn_softc *, int);
79 static void rtwn_pci_reset_tx_ring_stopped(struct rtwn_softc *, int);
80 static void rtwn_pci_reset_beacon_ring(struct rtwn_softc *, int);
81 static void rtwn_pci_reset_tx_list(struct rtwn_softc *,
82 struct ieee80211vap *, int);
83 static void rtwn_pci_free_tx_list(struct rtwn_softc *, int);
84 static void rtwn_pci_reset_lists(struct rtwn_softc *,
85 struct ieee80211vap *);
86 static int rtwn_pci_fw_write_block(struct rtwn_softc *,
87 const uint8_t *, uint16_t, int);
88 static uint16_t rtwn_pci_get_qmap(struct rtwn_softc *);
89 static void rtwn_pci_set_desc_addr(struct rtwn_softc *);
90 static void rtwn_pci_beacon_update_begin(struct rtwn_softc *,
91 struct ieee80211vap *);
92 static void rtwn_pci_beacon_update_end(struct rtwn_softc *,
93 struct ieee80211vap *);
94 static void rtwn_pci_attach_methods(struct rtwn_softc *);
97 static const struct rtwn_pci_ident *
98 rtwn_pci_probe_sub(device_t dev)
100 const struct rtwn_pci_ident *ident;
101 int vendor_id, device_id;
103 vendor_id = pci_get_vendor(dev);
104 device_id = pci_get_device(dev);
106 for (ident = rtwn_pci_ident_table; ident->name != NULL; ident++)
107 if (vendor_id == ident->vendor && device_id == ident->device)
114 rtwn_pci_probe(device_t dev)
116 const struct rtwn_pci_ident *ident;
118 ident = rtwn_pci_probe_sub(dev);
120 device_set_desc(dev, ident->name);
121 return (BUS_PROBE_DEFAULT);
127 rtwn_pci_alloc_rx_list(struct rtwn_softc *sc)
129 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
130 struct rtwn_rx_ring *rx_ring = &pc->rx_ring;
131 struct rtwn_rx_data *rx_data;
135 /* Allocate Rx descriptors. */
136 size = sizeof(struct r92ce_rx_stat) * RTWN_PCI_RX_LIST_COUNT;
137 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
138 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
139 size, 1, size, 0, NULL, NULL, &rx_ring->desc_dmat);
141 device_printf(sc->sc_dev, "could not create rx desc DMA tag\n");
145 error = bus_dmamem_alloc(rx_ring->desc_dmat, (void **)&rx_ring->desc,
146 BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT,
149 device_printf(sc->sc_dev, "could not allocate rx desc\n");
152 error = bus_dmamap_load(rx_ring->desc_dmat, rx_ring->desc_map,
153 rx_ring->desc, size, rtwn_pci_dma_map_addr, &rx_ring->paddr, 0);
155 device_printf(sc->sc_dev, "could not load rx desc DMA map\n");
158 bus_dmamap_sync(rx_ring->desc_dmat, rx_ring->desc_map,
159 BUS_DMASYNC_PREWRITE);
161 /* Create RX buffer DMA tag. */
162 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
163 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
164 MJUMPAGESIZE, 1, MJUMPAGESIZE, 0, NULL, NULL, &rx_ring->data_dmat);
166 device_printf(sc->sc_dev, "could not create rx buf DMA tag\n");
170 /* Allocate Rx buffers. */
171 for (i = 0; i < RTWN_PCI_RX_LIST_COUNT; i++) {
172 rx_data = &rx_ring->rx_data[i];
173 error = bus_dmamap_create(rx_ring->data_dmat, 0, &rx_data->map);
175 device_printf(sc->sc_dev,
176 "could not create rx buf DMA map\n");
180 rx_data->m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR,
182 if (rx_data->m == NULL) {
183 device_printf(sc->sc_dev,
184 "could not allocate rx mbuf\n");
189 error = bus_dmamap_load(rx_ring->data_dmat, rx_data->map,
190 mtod(rx_data->m, void *), MJUMPAGESIZE,
191 rtwn_pci_dma_map_addr, &rx_data->paddr, BUS_DMA_NOWAIT);
193 device_printf(sc->sc_dev,
194 "could not load rx buf DMA map");
198 rtwn_pci_setup_rx_desc(pc, &rx_ring->desc[i], rx_data->paddr,
206 rtwn_pci_free_rx_list(sc);
211 rtwn_pci_reset_rx_list(struct rtwn_softc *sc)
213 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
214 struct rtwn_rx_ring *rx_ring = &pc->rx_ring;
215 struct rtwn_rx_data *rx_data;
218 for (i = 0; i < RTWN_PCI_RX_LIST_COUNT; i++) {
219 rx_data = &rx_ring->rx_data[i];
220 rtwn_pci_setup_rx_desc(pc, &rx_ring->desc[i],
221 rx_data->paddr, MJUMPAGESIZE, i);
227 rtwn_pci_free_rx_list(struct rtwn_softc *sc)
229 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
230 struct rtwn_rx_ring *rx_ring = &pc->rx_ring;
231 struct rtwn_rx_data *rx_data;
234 if (rx_ring->desc_dmat != NULL) {
235 if (rx_ring->desc != NULL) {
236 bus_dmamap_sync(rx_ring->desc_dmat,
238 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
239 bus_dmamap_unload(rx_ring->desc_dmat,
241 bus_dmamem_free(rx_ring->desc_dmat, rx_ring->desc,
243 rx_ring->desc = NULL;
245 bus_dma_tag_destroy(rx_ring->desc_dmat);
246 rx_ring->desc_dmat = NULL;
249 for (i = 0; i < RTWN_PCI_RX_LIST_COUNT; i++) {
250 rx_data = &rx_ring->rx_data[i];
252 if (rx_data->m != NULL) {
253 bus_dmamap_sync(rx_ring->data_dmat,
254 rx_data->map, BUS_DMASYNC_POSTREAD);
255 bus_dmamap_unload(rx_ring->data_dmat, rx_data->map);
259 bus_dmamap_destroy(rx_ring->data_dmat, rx_data->map);
262 if (rx_ring->data_dmat != NULL) {
263 bus_dma_tag_destroy(rx_ring->data_dmat);
264 rx_ring->data_dmat = NULL;
269 rtwn_pci_alloc_tx_list(struct rtwn_softc *sc, int qid)
271 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
272 struct rtwn_tx_ring *tx_ring = &pc->tx_ring[qid];
276 size = sc->txdesc_len * RTWN_PCI_TX_LIST_COUNT;
277 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), PAGE_SIZE, 0,
278 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
279 size, 1, size, 0, NULL, NULL, &tx_ring->desc_dmat);
281 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
285 error = bus_dmamem_alloc(tx_ring->desc_dmat, &tx_ring->desc,
286 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &tx_ring->desc_map);
288 device_printf(sc->sc_dev, "can't map tx ring DMA memory\n");
291 error = bus_dmamap_load(tx_ring->desc_dmat, tx_ring->desc_map,
292 tx_ring->desc, size, rtwn_pci_dma_map_addr, &tx_ring->paddr,
295 device_printf(sc->sc_dev, "could not load desc DMA map\n");
298 bus_dmamap_sync(tx_ring->desc_dmat, tx_ring->desc_map,
299 BUS_DMASYNC_PREWRITE);
301 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
302 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
303 MJUMPAGESIZE, 1, MJUMPAGESIZE, 0, NULL, NULL, &tx_ring->data_dmat);
305 device_printf(sc->sc_dev, "could not create tx buf DMA tag\n");
309 for (i = 0; i < RTWN_PCI_TX_LIST_COUNT; i++) {
310 struct rtwn_tx_data *tx_data = &tx_ring->tx_data[i];
311 void *tx_desc = (uint8_t *)tx_ring->desc + sc->txdesc_len * i;
312 uint32_t next_desc_addr = tx_ring->paddr +
313 sc->txdesc_len * ((i + 1) % RTWN_PCI_TX_LIST_COUNT);
315 rtwn_pci_setup_tx_desc(pc, tx_desc, next_desc_addr);
317 error = bus_dmamap_create(tx_ring->data_dmat, 0, &tx_data->map);
319 device_printf(sc->sc_dev,
320 "could not create tx buf DMA map\n");
329 rtwn_pci_free_tx_list(sc, qid);
334 rtwn_pci_reset_tx_ring_stopped(struct rtwn_softc *sc, int qid)
336 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
337 struct rtwn_tx_ring *ring = &pc->tx_ring[qid];
340 for (i = 0; i < RTWN_PCI_TX_LIST_COUNT; i++) {
341 struct rtwn_tx_data *data = &ring->tx_data[i];
342 void *desc = (uint8_t *)ring->desc + sc->txdesc_len * i;
344 rtwn_pci_copy_tx_desc(pc, desc, NULL);
346 if (data->m != NULL) {
347 bus_dmamap_sync(ring->data_dmat, data->map,
348 BUS_DMASYNC_POSTWRITE);
349 bus_dmamap_unload(ring->data_dmat, data->map);
353 if (data->ni != NULL) {
354 ieee80211_free_node(data->ni);
359 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
360 BUS_DMASYNC_POSTWRITE);
362 sc->qfullmsk &= ~(1 << qid);
364 ring->last = ring->cur = 0;
368 * Clear entry 0 (or 1) in the beacon queue (other are not used).
371 rtwn_pci_reset_beacon_ring(struct rtwn_softc *sc, int id)
373 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
374 struct rtwn_tx_ring *ring = &pc->tx_ring[RTWN_PCI_BEACON_QUEUE];
375 struct rtwn_tx_data *data = &ring->tx_data[id];
376 struct rtwn_tx_desc_common *txd = (struct rtwn_tx_desc_common *)
377 ((uint8_t *)ring->desc + id * sc->txdesc_len);
379 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_POSTREAD);
380 if (txd->flags0 & RTWN_FLAGS0_OWN) {
382 txd->flags0 &= ~RTWN_FLAGS0_OWN;
383 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
384 BUS_DMASYNC_PREWRITE);
387 bus_dmamap_sync(ring->data_dmat, data->map,
388 BUS_DMASYNC_POSTWRITE);
389 bus_dmamap_unload(ring->data_dmat, data->map);
394 * Drop stale entries from Tx ring before the vap will be deleted.
395 * In case if vap is NULL just free everything and reset cur / last pointers.
398 rtwn_pci_reset_tx_list(struct rtwn_softc *sc, struct ieee80211vap *vap,
404 if (qid != RTWN_PCI_BEACON_QUEUE) {
406 * Device was stopped; just clear all entries.
408 rtwn_pci_reset_tx_ring_stopped(sc, qid);
410 for (i = 0; i < RTWN_PORT_COUNT; i++)
411 rtwn_pci_reset_beacon_ring(sc, i);
413 } else if (qid == RTWN_PCI_BEACON_QUEUE &&
414 (vap->iv_opmode == IEEE80211_M_HOSTAP ||
415 vap->iv_opmode == IEEE80211_M_IBSS)) {
416 struct rtwn_vap *uvp = RTWN_VAP(vap);
418 rtwn_pci_reset_beacon_ring(sc, uvp->id);
420 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
421 struct rtwn_tx_ring *ring = &pc->tx_ring[qid];
423 for (i = 0; i < RTWN_PCI_TX_LIST_COUNT; i++) {
424 struct rtwn_tx_data *data = &ring->tx_data[i];
425 if (data->ni != NULL && data->ni->ni_vap == vap) {
427 * NB: if some vap is still running
428 * rtwn_pci_tx_done() will free the mbuf;
429 * otherwise, rtwn_stop() will reset all rings
430 * after device shutdown.
432 ieee80211_free_node(data->ni);
440 rtwn_pci_free_tx_list(struct rtwn_softc *sc, int qid)
442 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
443 struct rtwn_tx_ring *tx_ring = &pc->tx_ring[qid];
444 struct rtwn_tx_data *tx_data;
447 if (tx_ring->desc_dmat != NULL) {
448 if (tx_ring->desc != NULL) {
449 bus_dmamap_sync(tx_ring->desc_dmat,
450 tx_ring->desc_map, BUS_DMASYNC_POSTWRITE);
451 bus_dmamap_unload(tx_ring->desc_dmat,
453 bus_dmamem_free(tx_ring->desc_dmat, tx_ring->desc,
456 bus_dma_tag_destroy(tx_ring->desc_dmat);
459 for (i = 0; i < RTWN_PCI_TX_LIST_COUNT; i++) {
460 tx_data = &tx_ring->tx_data[i];
462 if (tx_data->m != NULL) {
463 bus_dmamap_sync(tx_ring->data_dmat, tx_data->map,
464 BUS_DMASYNC_POSTWRITE);
465 bus_dmamap_unload(tx_ring->data_dmat, tx_data->map);
470 if (tx_ring->data_dmat != NULL) {
471 bus_dma_tag_destroy(tx_ring->data_dmat);
472 tx_ring->data_dmat = NULL;
475 sc->qfullmsk &= ~(1 << qid);
477 tx_ring->last = tx_ring->cur = 0;
481 rtwn_pci_reset_lists(struct rtwn_softc *sc, struct ieee80211vap *vap)
485 for (i = 0; i < RTWN_PCI_NTXQUEUES; i++)
486 rtwn_pci_reset_tx_list(sc, vap, i);
490 rtwn_pci_reset_rx_list(sc);
495 rtwn_pci_fw_write_block(struct rtwn_softc *sc, const uint8_t *buf,
496 uint16_t reg, int mlen)
500 for (i = 0; i < mlen; i++)
501 rtwn_pci_write_1(sc, reg++, buf[i]);
503 /* NB: cannot fail */
508 rtwn_pci_get_qmap(struct rtwn_softc *sc)
510 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
512 KASSERT(pc->pc_qmap != 0, ("%s: qmap is not set!\n", __func__));
514 return (pc->pc_qmap);
518 rtwn_pci_set_desc_addr(struct rtwn_softc *sc)
520 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
522 RTWN_DPRINTF(sc, RTWN_DEBUG_RESET, "%s: addresses:\n"
523 "bk: %08jX, be: %08jX, vi: %08jX, vo: %08jX\n"
524 "bcn: %08jX, mgt: %08jX, high: %08jX, rx: %08jX\n",
525 __func__, (uintmax_t)pc->tx_ring[RTWN_PCI_BK_QUEUE].paddr,
526 (uintmax_t)pc->tx_ring[RTWN_PCI_BE_QUEUE].paddr,
527 (uintmax_t)pc->tx_ring[RTWN_PCI_VI_QUEUE].paddr,
528 (uintmax_t)pc->tx_ring[RTWN_PCI_VO_QUEUE].paddr,
529 (uintmax_t)pc->tx_ring[RTWN_PCI_BEACON_QUEUE].paddr,
530 (uintmax_t)pc->tx_ring[RTWN_PCI_MGNT_QUEUE].paddr,
531 (uintmax_t)pc->tx_ring[RTWN_PCI_HIGH_QUEUE].paddr,
532 (uintmax_t)pc->rx_ring.paddr);
534 /* Set Tx Configuration Register. */
535 rtwn_pci_write_4(sc, R92C_TCR, pc->tcr);
537 /* Configure Tx DMA. */
538 rtwn_pci_write_4(sc, R92C_BKQ_DESA,
539 pc->tx_ring[RTWN_PCI_BK_QUEUE].paddr);
540 rtwn_pci_write_4(sc, R92C_BEQ_DESA,
541 pc->tx_ring[RTWN_PCI_BE_QUEUE].paddr);
542 rtwn_pci_write_4(sc, R92C_VIQ_DESA,
543 pc->tx_ring[RTWN_PCI_VI_QUEUE].paddr);
544 rtwn_pci_write_4(sc, R92C_VOQ_DESA,
545 pc->tx_ring[RTWN_PCI_VO_QUEUE].paddr);
546 rtwn_pci_write_4(sc, R92C_BCNQ_DESA,
547 pc->tx_ring[RTWN_PCI_BEACON_QUEUE].paddr);
548 rtwn_pci_write_4(sc, R92C_MGQ_DESA,
549 pc->tx_ring[RTWN_PCI_MGNT_QUEUE].paddr);
550 rtwn_pci_write_4(sc, R92C_HQ_DESA,
551 pc->tx_ring[RTWN_PCI_HIGH_QUEUE].paddr);
553 /* Configure Rx DMA. */
554 rtwn_pci_write_4(sc, R92C_RX_DESA, pc->rx_ring.paddr);
558 rtwn_pci_beacon_update_begin(struct rtwn_softc *sc, struct ieee80211vap *vap)
560 struct rtwn_vap *rvp = RTWN_VAP(vap);
562 RTWN_ASSERT_LOCKED(sc);
564 rtwn_beacon_enable(sc, rvp->id, 0);
568 rtwn_pci_beacon_update_end(struct rtwn_softc *sc, struct ieee80211vap *vap)
570 struct rtwn_vap *rvp = RTWN_VAP(vap);
572 RTWN_ASSERT_LOCKED(sc);
574 if (rvp->curr_mode != R92C_MSR_NOLINK)
575 rtwn_beacon_enable(sc, rvp->id, 1);
579 rtwn_pci_attach_methods(struct rtwn_softc *sc)
581 sc->sc_write_1 = rtwn_pci_write_1;
582 sc->sc_write_2 = rtwn_pci_write_2;
583 sc->sc_write_4 = rtwn_pci_write_4;
584 sc->sc_read_1 = rtwn_pci_read_1;
585 sc->sc_read_2 = rtwn_pci_read_2;
586 sc->sc_read_4 = rtwn_pci_read_4;
587 sc->sc_delay = rtwn_pci_delay;
588 sc->sc_tx_start = rtwn_pci_tx_start;
589 sc->sc_reset_lists = rtwn_pci_reset_lists;
590 sc->sc_abort_xfers = rtwn_nop_softc;
591 sc->sc_fw_write_block = rtwn_pci_fw_write_block;
592 sc->sc_get_qmap = rtwn_pci_get_qmap;
593 sc->sc_set_desc_addr = rtwn_pci_set_desc_addr;
594 sc->sc_drop_incorrect_tx = rtwn_nop_softc;
595 sc->sc_beacon_update_begin = rtwn_pci_beacon_update_begin;
596 sc->sc_beacon_update_end = rtwn_pci_beacon_update_end;
597 sc->sc_beacon_unload = rtwn_pci_reset_beacon_ring;
599 sc->bcn_check_interval = 25000;
603 rtwn_pci_attach(device_t dev)
605 const struct rtwn_pci_ident *ident;
606 struct rtwn_pci_softc *pc = device_get_softc(dev);
607 struct rtwn_softc *sc = &pc->pc_sc;
608 struct ieee80211com *ic = &sc->sc_ic;
610 int cap_off, i, error, rid;
612 ident = rtwn_pci_probe_sub(dev);
617 * Get the offset of the PCI Express Capability Structure in PCI
618 * Configuration Space.
620 error = pci_find_cap(dev, PCIY_EXPRESS, &cap_off);
622 device_printf(dev, "PCIe capability structure not found!\n");
626 /* Enable bus-mastering. */
627 pci_enable_busmaster(dev);
630 pc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
632 if (pc->mem == NULL) {
633 device_printf(dev, "can't map mem space\n");
636 pc->pc_st = rman_get_bustag(pc->mem);
637 pc->pc_sh = rman_get_bushandle(pc->mem);
639 /* Install interrupt handler. */
641 if (pci_alloc_msi(dev, &rid) == 0)
645 pc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE |
646 (rid != 0 ? 0 : RF_SHAREABLE));
647 if (pc->irq == NULL) {
648 device_printf(dev, "can't map interrupt\n");
652 /* Disable PCIe Active State Power Management (ASPM). */
653 lcsr = pci_read_config(dev, cap_off + PCIER_LINK_CTL, 4);
654 lcsr &= ~PCIEM_LINK_CTL_ASPMC;
655 pci_write_config(dev, cap_off + PCIER_LINK_CTL, lcsr, 4);
658 ic->ic_name = device_get_nameunit(dev);
660 /* Need to be initialized early. */
661 rtwn_sysctlattach(sc);
662 mtx_init(&sc->sc_mtx, ic->ic_name, MTX_NETWORK_LOCK, MTX_DEF);
664 rtwn_pci_attach_methods(sc);
665 rtwn_pci_attach_private(pc, ident->chip);
667 /* Allocate Tx/Rx buffers. */
668 error = rtwn_pci_alloc_rx_list(sc);
671 "could not allocate Rx buffers, error %d\n",
675 for (i = 0; i < RTWN_PCI_NTXQUEUES; i++) {
676 error = rtwn_pci_alloc_tx_list(sc, i);
679 "could not allocate Tx buffers, error %d\n",
685 /* Generic attach. */
686 error = rtwn_attach(sc);
691 * Hook our interrupt after all initialization is complete.
693 error = bus_setup_intr(dev, pc->irq, INTR_TYPE_NET | INTR_MPSAFE,
694 NULL, rtwn_pci_intr, sc, &pc->pc_ih);
696 device_printf(dev, "can't establish interrupt, error %d\n",
704 rtwn_pci_detach(dev); /* failure */
709 rtwn_pci_detach(device_t dev)
711 struct rtwn_pci_softc *pc = device_get_softc(dev);
712 struct rtwn_softc *sc = &pc->pc_sc;
715 /* Generic detach. */
718 /* Uninstall interrupt handler. */
719 if (pc->irq != NULL) {
720 bus_teardown_intr(dev, pc->irq, pc->pc_ih);
721 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(pc->irq),
723 pci_release_msi(dev);
726 /* Free Tx/Rx buffers. */
727 for (i = 0; i < RTWN_PCI_NTXQUEUES; i++)
728 rtwn_pci_free_tx_list(sc, i);
729 rtwn_pci_free_rx_list(sc);
732 bus_release_resource(dev, SYS_RES_MEMORY,
733 rman_get_rid(pc->mem), pc->mem);
735 rtwn_detach_private(sc);
736 mtx_destroy(&sc->sc_mtx);
742 rtwn_pci_shutdown(device_t self)
744 struct rtwn_pci_softc *pc = device_get_softc(self);
746 ieee80211_stop_all(&pc->pc_sc.sc_ic);
751 rtwn_pci_suspend(device_t self)
753 struct rtwn_pci_softc *pc = device_get_softc(self);
755 rtwn_suspend(&pc->pc_sc);
761 rtwn_pci_resume(device_t self)
763 struct rtwn_pci_softc *pc = device_get_softc(self);
765 rtwn_resume(&pc->pc_sc);
770 static device_method_t rtwn_pci_methods[] = {
771 /* Device interface */
772 DEVMETHOD(device_probe, rtwn_pci_probe),
773 DEVMETHOD(device_attach, rtwn_pci_attach),
774 DEVMETHOD(device_detach, rtwn_pci_detach),
775 DEVMETHOD(device_shutdown, rtwn_pci_shutdown),
776 DEVMETHOD(device_suspend, rtwn_pci_suspend),
777 DEVMETHOD(device_resume, rtwn_pci_resume),
782 static driver_t rtwn_pci_driver = {
785 sizeof(struct rtwn_pci_softc)
788 static devclass_t rtwn_pci_devclass;
790 DRIVER_MODULE(rtwn_pci, pci, rtwn_pci_driver, rtwn_pci_devclass, NULL, NULL);
791 MODULE_VERSION(rtwn_pci, 1);
792 MODULE_DEPEND(rtwn_pci, pci, 1, 1, 1);
793 MODULE_DEPEND(rtwn_pci, wlan, 1, 1, 1);
794 MODULE_DEPEND(rtwn_pci, rtwn, 2, 2, 2);