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>
67 static device_probe_t rtwn_pci_probe;
68 static device_attach_t rtwn_pci_attach;
69 static device_detach_t rtwn_pci_detach;
70 static device_shutdown_t rtwn_pci_shutdown;
71 static device_suspend_t rtwn_pci_suspend;
72 static device_resume_t rtwn_pci_resume;
74 static int rtwn_pci_alloc_rx_list(struct rtwn_softc *);
75 static void rtwn_pci_reset_rx_list(struct rtwn_softc *);
76 static void rtwn_pci_free_rx_list(struct rtwn_softc *);
77 static int rtwn_pci_alloc_tx_list(struct rtwn_softc *, int);
78 static void rtwn_pci_reset_tx_ring_stopped(struct rtwn_softc *, int);
79 static void rtwn_pci_reset_beacon_ring(struct rtwn_softc *, int);
80 static void rtwn_pci_reset_tx_list(struct rtwn_softc *,
81 struct ieee80211vap *, int);
82 static void rtwn_pci_free_tx_list(struct rtwn_softc *, int);
83 static void rtwn_pci_reset_lists(struct rtwn_softc *,
84 struct ieee80211vap *);
85 static int rtwn_pci_fw_write_block(struct rtwn_softc *,
86 const uint8_t *, uint16_t, int);
87 static uint16_t rtwn_pci_get_qmap(struct rtwn_softc *);
88 static void rtwn_pci_set_desc_addr(struct rtwn_softc *);
89 static void rtwn_pci_beacon_update_begin(struct rtwn_softc *,
90 struct ieee80211vap *);
91 static void rtwn_pci_beacon_update_end(struct rtwn_softc *,
92 struct ieee80211vap *);
93 static void rtwn_pci_attach_methods(struct rtwn_softc *);
96 static const struct rtwn_pci_ident *
97 rtwn_pci_probe_sub(device_t dev)
99 const struct rtwn_pci_ident *ident;
100 int vendor_id, device_id;
102 vendor_id = pci_get_vendor(dev);
103 device_id = pci_get_device(dev);
105 for (ident = rtwn_pci_ident_table; ident->name != NULL; ident++)
106 if (vendor_id == ident->vendor && device_id == ident->device)
113 rtwn_pci_probe(device_t dev)
115 const struct rtwn_pci_ident *ident;
117 ident = rtwn_pci_probe_sub(dev);
119 device_set_desc(dev, ident->name);
120 return (BUS_PROBE_DEFAULT);
126 rtwn_pci_alloc_rx_list(struct rtwn_softc *sc)
128 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
129 struct rtwn_rx_ring *rx_ring = &pc->rx_ring;
130 struct rtwn_rx_data *rx_data;
134 /* Allocate Rx descriptors. */
135 size = sizeof(struct rtwn_rx_stat_pci) * RTWN_PCI_RX_LIST_COUNT;
136 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
137 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
138 size, 1, size, 0, NULL, NULL, &rx_ring->desc_dmat);
140 device_printf(sc->sc_dev, "could not create rx desc DMA tag\n");
144 error = bus_dmamem_alloc(rx_ring->desc_dmat, (void **)&rx_ring->desc,
145 BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT,
148 device_printf(sc->sc_dev, "could not allocate rx desc\n");
151 error = bus_dmamap_load(rx_ring->desc_dmat, rx_ring->desc_map,
152 rx_ring->desc, size, rtwn_pci_dma_map_addr, &rx_ring->paddr, 0);
154 device_printf(sc->sc_dev, "could not load rx desc DMA map\n");
157 bus_dmamap_sync(rx_ring->desc_dmat, rx_ring->desc_map,
158 BUS_DMASYNC_PREWRITE);
160 /* Create RX buffer DMA tag. */
161 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
162 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
163 MJUMPAGESIZE, 1, MJUMPAGESIZE, 0, NULL, NULL, &rx_ring->data_dmat);
165 device_printf(sc->sc_dev, "could not create rx buf DMA tag\n");
169 /* Allocate Rx buffers. */
170 for (i = 0; i < RTWN_PCI_RX_LIST_COUNT; i++) {
171 rx_data = &rx_ring->rx_data[i];
172 error = bus_dmamap_create(rx_ring->data_dmat, 0, &rx_data->map);
174 device_printf(sc->sc_dev,
175 "could not create rx buf DMA map\n");
179 rx_data->m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR,
181 if (rx_data->m == NULL) {
182 device_printf(sc->sc_dev,
183 "could not allocate rx mbuf\n");
188 error = bus_dmamap_load(rx_ring->data_dmat, rx_data->map,
189 mtod(rx_data->m, void *), MJUMPAGESIZE,
190 rtwn_pci_dma_map_addr, &rx_data->paddr, BUS_DMA_NOWAIT);
192 device_printf(sc->sc_dev,
193 "could not load rx buf DMA map");
197 rtwn_pci_setup_rx_desc(pc, &rx_ring->desc[i], rx_data->paddr,
205 rtwn_pci_free_rx_list(sc);
210 rtwn_pci_reset_rx_list(struct rtwn_softc *sc)
212 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
213 struct rtwn_rx_ring *rx_ring = &pc->rx_ring;
214 struct rtwn_rx_data *rx_data;
217 for (i = 0; i < RTWN_PCI_RX_LIST_COUNT; i++) {
218 rx_data = &rx_ring->rx_data[i];
219 rtwn_pci_setup_rx_desc(pc, &rx_ring->desc[i],
220 rx_data->paddr, MJUMPAGESIZE, i);
226 rtwn_pci_free_rx_list(struct rtwn_softc *sc)
228 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
229 struct rtwn_rx_ring *rx_ring = &pc->rx_ring;
230 struct rtwn_rx_data *rx_data;
233 if (rx_ring->desc_dmat != NULL) {
234 if (rx_ring->desc != NULL) {
235 bus_dmamap_sync(rx_ring->desc_dmat,
237 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
238 bus_dmamap_unload(rx_ring->desc_dmat,
240 bus_dmamem_free(rx_ring->desc_dmat, rx_ring->desc,
242 rx_ring->desc = NULL;
244 bus_dma_tag_destroy(rx_ring->desc_dmat);
245 rx_ring->desc_dmat = NULL;
248 for (i = 0; i < RTWN_PCI_RX_LIST_COUNT; i++) {
249 rx_data = &rx_ring->rx_data[i];
251 if (rx_data->m != NULL) {
252 bus_dmamap_sync(rx_ring->data_dmat,
253 rx_data->map, BUS_DMASYNC_POSTREAD);
254 bus_dmamap_unload(rx_ring->data_dmat, rx_data->map);
258 bus_dmamap_destroy(rx_ring->data_dmat, rx_data->map);
261 if (rx_ring->data_dmat != NULL) {
262 bus_dma_tag_destroy(rx_ring->data_dmat);
263 rx_ring->data_dmat = NULL;
268 rtwn_pci_alloc_tx_list(struct rtwn_softc *sc, int qid)
270 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
271 struct rtwn_tx_ring *tx_ring = &pc->tx_ring[qid];
275 size = sc->txdesc_len * RTWN_PCI_TX_LIST_COUNT;
276 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), PAGE_SIZE, 0,
277 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
278 size, 1, size, 0, NULL, NULL, &tx_ring->desc_dmat);
280 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
284 error = bus_dmamem_alloc(tx_ring->desc_dmat, &tx_ring->desc,
285 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &tx_ring->desc_map);
287 device_printf(sc->sc_dev, "can't map tx ring DMA memory\n");
290 error = bus_dmamap_load(tx_ring->desc_dmat, tx_ring->desc_map,
291 tx_ring->desc, size, rtwn_pci_dma_map_addr, &tx_ring->paddr,
294 device_printf(sc->sc_dev, "could not load desc DMA map\n");
297 bus_dmamap_sync(tx_ring->desc_dmat, tx_ring->desc_map,
298 BUS_DMASYNC_PREWRITE);
300 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
301 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
302 MJUMPAGESIZE, 1, MJUMPAGESIZE, 0, NULL, NULL, &tx_ring->data_dmat);
304 device_printf(sc->sc_dev, "could not create tx buf DMA tag\n");
308 for (i = 0; i < RTWN_PCI_TX_LIST_COUNT; i++) {
309 struct rtwn_tx_data *tx_data = &tx_ring->tx_data[i];
310 void *tx_desc = (uint8_t *)tx_ring->desc + sc->txdesc_len * i;
311 uint32_t next_desc_addr = tx_ring->paddr +
312 sc->txdesc_len * ((i + 1) % RTWN_PCI_TX_LIST_COUNT);
314 rtwn_pci_setup_tx_desc(pc, tx_desc, next_desc_addr);
316 error = bus_dmamap_create(tx_ring->data_dmat, 0, &tx_data->map);
318 device_printf(sc->sc_dev,
319 "could not create tx buf DMA map\n");
328 rtwn_pci_free_tx_list(sc, qid);
333 rtwn_pci_reset_tx_ring_stopped(struct rtwn_softc *sc, int qid)
335 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
336 struct rtwn_tx_ring *ring = &pc->tx_ring[qid];
339 for (i = 0; i < RTWN_PCI_TX_LIST_COUNT; i++) {
340 struct rtwn_tx_data *data = &ring->tx_data[i];
341 void *desc = (uint8_t *)ring->desc + sc->txdesc_len * i;
343 rtwn_pci_copy_tx_desc(pc, desc, NULL);
345 if (data->m != NULL) {
346 bus_dmamap_sync(ring->data_dmat, data->map,
347 BUS_DMASYNC_POSTWRITE);
348 bus_dmamap_unload(ring->data_dmat, data->map);
352 if (data->ni != NULL) {
353 ieee80211_free_node(data->ni);
358 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
359 BUS_DMASYNC_POSTWRITE);
361 sc->qfullmsk &= ~(1 << qid);
363 ring->last = ring->cur = 0;
367 * Clear entry 0 (or 1) in the beacon queue (other are not used).
370 rtwn_pci_reset_beacon_ring(struct rtwn_softc *sc, int id)
372 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
373 struct rtwn_tx_ring *ring = &pc->tx_ring[RTWN_PCI_BEACON_QUEUE];
374 struct rtwn_tx_data *data = &ring->tx_data[id];
375 struct rtwn_tx_desc_common *txd = (struct rtwn_tx_desc_common *)
376 ((uint8_t *)ring->desc + id * sc->txdesc_len);
378 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_POSTREAD);
379 if (txd->flags0 & RTWN_FLAGS0_OWN) {
381 txd->flags0 &= ~RTWN_FLAGS0_OWN;
382 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
383 BUS_DMASYNC_PREWRITE);
386 bus_dmamap_sync(ring->data_dmat, data->map,
387 BUS_DMASYNC_POSTWRITE);
388 bus_dmamap_unload(ring->data_dmat, data->map);
393 * Drop stale entries from Tx ring before the vap will be deleted.
394 * In case if vap is NULL just free everything and reset cur / last pointers.
397 rtwn_pci_reset_tx_list(struct rtwn_softc *sc, struct ieee80211vap *vap,
403 if (qid != RTWN_PCI_BEACON_QUEUE) {
405 * Device was stopped; just clear all entries.
407 rtwn_pci_reset_tx_ring_stopped(sc, qid);
409 for (i = 0; i < RTWN_PORT_COUNT; i++)
410 rtwn_pci_reset_beacon_ring(sc, i);
412 } else if (qid == RTWN_PCI_BEACON_QUEUE &&
413 (vap->iv_opmode == IEEE80211_M_HOSTAP ||
414 vap->iv_opmode == IEEE80211_M_IBSS)) {
415 struct rtwn_vap *uvp = RTWN_VAP(vap);
417 rtwn_pci_reset_beacon_ring(sc, uvp->id);
419 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
420 struct rtwn_tx_ring *ring = &pc->tx_ring[qid];
422 for (i = 0; i < RTWN_PCI_TX_LIST_COUNT; i++) {
423 struct rtwn_tx_data *data = &ring->tx_data[i];
424 if (data->ni != NULL && data->ni->ni_vap == vap) {
426 * NB: if some vap is still running
427 * rtwn_pci_tx_done() will free the mbuf;
428 * otherwise, rtwn_stop() will reset all rings
429 * after device shutdown.
431 ieee80211_free_node(data->ni);
439 rtwn_pci_free_tx_list(struct rtwn_softc *sc, int qid)
441 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
442 struct rtwn_tx_ring *tx_ring = &pc->tx_ring[qid];
443 struct rtwn_tx_data *tx_data;
446 if (tx_ring->desc_dmat != NULL) {
447 if (tx_ring->desc != NULL) {
448 bus_dmamap_sync(tx_ring->desc_dmat,
449 tx_ring->desc_map, BUS_DMASYNC_POSTWRITE);
450 bus_dmamap_unload(tx_ring->desc_dmat,
452 bus_dmamem_free(tx_ring->desc_dmat, tx_ring->desc,
455 bus_dma_tag_destroy(tx_ring->desc_dmat);
458 for (i = 0; i < RTWN_PCI_TX_LIST_COUNT; i++) {
459 tx_data = &tx_ring->tx_data[i];
461 if (tx_data->m != NULL) {
462 bus_dmamap_sync(tx_ring->data_dmat, tx_data->map,
463 BUS_DMASYNC_POSTWRITE);
464 bus_dmamap_unload(tx_ring->data_dmat, tx_data->map);
469 if (tx_ring->data_dmat != NULL) {
470 bus_dma_tag_destroy(tx_ring->data_dmat);
471 tx_ring->data_dmat = NULL;
474 sc->qfullmsk &= ~(1 << qid);
476 tx_ring->last = tx_ring->cur = 0;
480 rtwn_pci_reset_lists(struct rtwn_softc *sc, struct ieee80211vap *vap)
484 for (i = 0; i < RTWN_PCI_NTXQUEUES; i++)
485 rtwn_pci_reset_tx_list(sc, vap, i);
489 rtwn_pci_reset_rx_list(sc);
494 rtwn_pci_fw_write_block(struct rtwn_softc *sc, const uint8_t *buf,
495 uint16_t reg, int mlen)
499 for (i = 0; i < mlen; i++)
500 rtwn_pci_write_1(sc, reg++, buf[i]);
502 /* NB: cannot fail */
507 rtwn_pci_get_qmap(struct rtwn_softc *sc)
509 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
511 KASSERT(pc->pc_qmap != 0, ("%s: qmap is not set!\n", __func__));
513 return (pc->pc_qmap);
517 rtwn_pci_set_desc_addr(struct rtwn_softc *sc)
519 struct rtwn_pci_softc *pc = RTWN_PCI_SOFTC(sc);
521 RTWN_DPRINTF(sc, RTWN_DEBUG_RESET, "%s: addresses:\n"
522 "bk: %08jX, be: %08jX, vi: %08jX, vo: %08jX\n"
523 "bcn: %08jX, mgt: %08jX, high: %08jX, rx: %08jX\n",
524 __func__, (uintmax_t)pc->tx_ring[RTWN_PCI_BK_QUEUE].paddr,
525 (uintmax_t)pc->tx_ring[RTWN_PCI_BE_QUEUE].paddr,
526 (uintmax_t)pc->tx_ring[RTWN_PCI_VI_QUEUE].paddr,
527 (uintmax_t)pc->tx_ring[RTWN_PCI_VO_QUEUE].paddr,
528 (uintmax_t)pc->tx_ring[RTWN_PCI_BEACON_QUEUE].paddr,
529 (uintmax_t)pc->tx_ring[RTWN_PCI_MGNT_QUEUE].paddr,
530 (uintmax_t)pc->tx_ring[RTWN_PCI_HIGH_QUEUE].paddr,
531 (uintmax_t)pc->rx_ring.paddr);
533 /* Set Tx Configuration Register. */
534 rtwn_pci_write_4(sc, R92C_TCR, pc->tcr);
536 /* Configure Tx DMA. */
537 rtwn_pci_write_4(sc, R92C_BKQ_DESA,
538 pc->tx_ring[RTWN_PCI_BK_QUEUE].paddr);
539 rtwn_pci_write_4(sc, R92C_BEQ_DESA,
540 pc->tx_ring[RTWN_PCI_BE_QUEUE].paddr);
541 rtwn_pci_write_4(sc, R92C_VIQ_DESA,
542 pc->tx_ring[RTWN_PCI_VI_QUEUE].paddr);
543 rtwn_pci_write_4(sc, R92C_VOQ_DESA,
544 pc->tx_ring[RTWN_PCI_VO_QUEUE].paddr);
545 rtwn_pci_write_4(sc, R92C_BCNQ_DESA,
546 pc->tx_ring[RTWN_PCI_BEACON_QUEUE].paddr);
547 rtwn_pci_write_4(sc, R92C_MGQ_DESA,
548 pc->tx_ring[RTWN_PCI_MGNT_QUEUE].paddr);
549 rtwn_pci_write_4(sc, R92C_HQ_DESA,
550 pc->tx_ring[RTWN_PCI_HIGH_QUEUE].paddr);
552 /* Configure Rx DMA. */
553 rtwn_pci_write_4(sc, R92C_RX_DESA, pc->rx_ring.paddr);
557 rtwn_pci_beacon_update_begin(struct rtwn_softc *sc, struct ieee80211vap *vap)
559 struct rtwn_vap *rvp = RTWN_VAP(vap);
561 RTWN_ASSERT_LOCKED(sc);
563 rtwn_beacon_enable(sc, rvp->id, 0);
567 rtwn_pci_beacon_update_end(struct rtwn_softc *sc, struct ieee80211vap *vap)
569 struct rtwn_vap *rvp = RTWN_VAP(vap);
571 RTWN_ASSERT_LOCKED(sc);
573 if (rvp->curr_mode != R92C_MSR_NOLINK)
574 rtwn_beacon_enable(sc, rvp->id, 1);
578 rtwn_pci_attach_methods(struct rtwn_softc *sc)
580 sc->sc_write_1 = rtwn_pci_write_1;
581 sc->sc_write_2 = rtwn_pci_write_2;
582 sc->sc_write_4 = rtwn_pci_write_4;
583 sc->sc_read_1 = rtwn_pci_read_1;
584 sc->sc_read_2 = rtwn_pci_read_2;
585 sc->sc_read_4 = rtwn_pci_read_4;
586 sc->sc_delay = rtwn_pci_delay;
587 sc->sc_tx_start = rtwn_pci_tx_start;
588 sc->sc_reset_lists = rtwn_pci_reset_lists;
589 sc->sc_abort_xfers = rtwn_nop_softc;
590 sc->sc_fw_write_block = rtwn_pci_fw_write_block;
591 sc->sc_get_qmap = rtwn_pci_get_qmap;
592 sc->sc_set_desc_addr = rtwn_pci_set_desc_addr;
593 sc->sc_drop_incorrect_tx = rtwn_nop_softc;
594 sc->sc_beacon_update_begin = rtwn_pci_beacon_update_begin;
595 sc->sc_beacon_update_end = rtwn_pci_beacon_update_end;
596 sc->sc_beacon_unload = rtwn_pci_reset_beacon_ring;
598 sc->bcn_check_interval = 25000;
602 rtwn_pci_attach(device_t dev)
604 const struct rtwn_pci_ident *ident;
605 struct rtwn_pci_softc *pc = device_get_softc(dev);
606 struct rtwn_softc *sc = &pc->pc_sc;
607 struct ieee80211com *ic = &sc->sc_ic;
609 int cap_off, i, error, rid;
611 ident = rtwn_pci_probe_sub(dev);
616 * Get the offset of the PCI Express Capability Structure in PCI
617 * Configuration Space.
619 error = pci_find_cap(dev, PCIY_EXPRESS, &cap_off);
621 device_printf(dev, "PCIe capability structure not found!\n");
625 /* Enable bus-mastering. */
626 pci_enable_busmaster(dev);
629 pc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
631 if (pc->mem == NULL) {
632 device_printf(dev, "can't map mem space\n");
635 pc->pc_st = rman_get_bustag(pc->mem);
636 pc->pc_sh = rman_get_bushandle(pc->mem);
638 /* Install interrupt handler. */
640 if (pci_alloc_msi(dev, &rid) == 0)
644 pc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE |
645 (rid != 0 ? 0 : RF_SHAREABLE));
646 if (pc->irq == NULL) {
647 device_printf(dev, "can't map interrupt\n");
651 /* Disable PCIe Active State Power Management (ASPM). */
652 lcsr = pci_read_config(dev, cap_off + PCIER_LINK_CTL, 4);
653 lcsr &= ~PCIEM_LINK_CTL_ASPMC;
654 pci_write_config(dev, cap_off + PCIER_LINK_CTL, lcsr, 4);
657 ic->ic_name = device_get_nameunit(dev);
659 /* Need to be initialized early. */
660 rtwn_sysctlattach(sc);
661 mtx_init(&sc->sc_mtx, ic->ic_name, MTX_NETWORK_LOCK, MTX_DEF);
663 rtwn_pci_attach_methods(sc);
664 rtwn_pci_attach_private(pc, ident->chip);
666 /* Allocate Tx/Rx buffers. */
667 error = rtwn_pci_alloc_rx_list(sc);
670 "could not allocate Rx buffers, error %d\n",
674 for (i = 0; i < RTWN_PCI_NTXQUEUES; i++) {
675 error = rtwn_pci_alloc_tx_list(sc, i);
678 "could not allocate Tx buffers, error %d\n",
684 /* Generic attach. */
685 error = rtwn_attach(sc);
690 * Hook our interrupt after all initialization is complete.
692 error = bus_setup_intr(dev, pc->irq, INTR_TYPE_NET | INTR_MPSAFE,
693 NULL, rtwn_pci_intr, sc, &pc->pc_ih);
695 device_printf(dev, "can't establish interrupt, error %d\n",
703 rtwn_pci_detach(dev); /* failure */
708 rtwn_pci_detach(device_t dev)
710 struct rtwn_pci_softc *pc = device_get_softc(dev);
711 struct rtwn_softc *sc = &pc->pc_sc;
714 /* Generic detach. */
717 /* Uninstall interrupt handler. */
718 if (pc->irq != NULL) {
719 bus_teardown_intr(dev, pc->irq, pc->pc_ih);
720 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(pc->irq),
722 pci_release_msi(dev);
725 /* Free Tx/Rx buffers. */
726 for (i = 0; i < RTWN_PCI_NTXQUEUES; i++)
727 rtwn_pci_free_tx_list(sc, i);
728 rtwn_pci_free_rx_list(sc);
731 bus_release_resource(dev, SYS_RES_MEMORY,
732 rman_get_rid(pc->mem), pc->mem);
734 rtwn_detach_private(sc);
735 mtx_destroy(&sc->sc_mtx);
741 rtwn_pci_shutdown(device_t self)
743 struct rtwn_pci_softc *pc = device_get_softc(self);
745 ieee80211_stop_all(&pc->pc_sc.sc_ic);
750 rtwn_pci_suspend(device_t self)
752 struct rtwn_pci_softc *pc = device_get_softc(self);
754 rtwn_suspend(&pc->pc_sc);
760 rtwn_pci_resume(device_t self)
762 struct rtwn_pci_softc *pc = device_get_softc(self);
764 rtwn_resume(&pc->pc_sc);
769 static device_method_t rtwn_pci_methods[] = {
770 /* Device interface */
771 DEVMETHOD(device_probe, rtwn_pci_probe),
772 DEVMETHOD(device_attach, rtwn_pci_attach),
773 DEVMETHOD(device_detach, rtwn_pci_detach),
774 DEVMETHOD(device_shutdown, rtwn_pci_shutdown),
775 DEVMETHOD(device_suspend, rtwn_pci_suspend),
776 DEVMETHOD(device_resume, rtwn_pci_resume),
781 static driver_t rtwn_pci_driver = {
784 sizeof(struct rtwn_pci_softc)
787 static devclass_t rtwn_pci_devclass;
789 DRIVER_MODULE(rtwn_pci, pci, rtwn_pci_driver, rtwn_pci_devclass, NULL, NULL);
790 MODULE_VERSION(rtwn_pci, 1);
791 MODULE_DEPEND(rtwn_pci, pci, 1, 1, 1);
792 MODULE_DEPEND(rtwn_pci, wlan, 1, 1, 1);
793 MODULE_DEPEND(rtwn_pci, rtwn, 2, 2, 2);