1 /* $OpenBSD: if_urtwn.c,v 1.16 2011/02/10 17:26:40 jakemsr Exp $ */
2
3 /*-
4 * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
5 * Copyright (c) 2014 Kevin Lo <kevlo@FreeBSD.org>
6 * Copyright (c) 2015-2016 Andriy Voskoboinyk <avos@FreeBSD.org>
7 *
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.
11 *
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.
19 */
20
21 #include <sys/cdefs.h>
22 #include "opt_wlan.h"
23
24 #include <sys/param.h>
25 #include <sys/lock.h>
26 #include <sys/mutex.h>
27 #include <sys/condvar.h>
28 #include <sys/mbuf.h>
29 #include <sys/kernel.h>
30 #include <sys/socket.h>
31 #include <sys/systm.h>
32 #include <sys/malloc.h>
33 #include <sys/queue.h>
34 #include <sys/taskqueue.h>
35 #include <sys/bus.h>
36 #include <sys/endian.h>
37
38 #include <dev/usb/usb.h>
39 #include <dev/usb/usbdi.h>
40 #include <dev/usb/usb_device.h>
41
42 #include <net/if.h>
43 #include <net/ethernet.h>
44 #include <net/if_media.h>
45
46 #include <net80211/ieee80211_var.h>
47
48 #include <dev/rtwn/if_rtwnvar.h>
49 #include <dev/rtwn/if_rtwn_debug.h>
50
51 #include <dev/rtwn/usb/rtwn_usb_var.h>
52 #include <dev/rtwn/usb/rtwn_usb_ep.h>
53 #include <dev/rtwn/usb/rtwn_usb_rx.h>
54 #include <dev/rtwn/usb/rtwn_usb_tx.h>
55
56 #include <dev/rtwn/rtl8192c/usb/r92cu_reg.h>
57
58 static const struct usb_config rtwn_config_common[RTWN_BULK_EP_COUNT] = {
59 [RTWN_BULK_RX] = {
60 .type = UE_BULK,
61 .endpoint = UE_ADDR_ANY,
62 .direction = UE_DIR_IN,
63 .flags = {
64 .pipe_bof = 1,
65 .short_xfer_ok = 1
66 },
67 .callback = rtwn_bulk_rx_callback,
68 },
69 [RTWN_BULK_TX_BE] = {
70 .type = UE_BULK,
71 .endpoint = UE_ADDR_ANY,
72 .direction = UE_DIR_OUT,
73 .bufsize = RTWN_USB_TXBUFSZ,
74 .flags = {
75 .ext_buffer = 1,
76 .pipe_bof = 1,
77 .force_short_xfer = 1,
78 },
79 .callback = rtwn_bulk_tx_callback_be,
80 .timeout = RTWN_TX_TIMEOUT, /* ms */
81 },
82 [RTWN_BULK_TX_BK] = {
83 .type = UE_BULK,
84 .endpoint = UE_ADDR_ANY,
85 .direction = UE_DIR_OUT,
86 .bufsize = RTWN_USB_TXBUFSZ,
87 .flags = {
88 .ext_buffer = 1,
89 .pipe_bof = 1,
90 .force_short_xfer = 1,
91 },
92 .callback = rtwn_bulk_tx_callback_bk,
93 .timeout = RTWN_TX_TIMEOUT, /* ms */
94 },
95 [RTWN_BULK_TX_VI] = {
96 .type = UE_BULK,
97 .endpoint = UE_ADDR_ANY,
98 .direction = UE_DIR_OUT,
99 .bufsize = RTWN_USB_TXBUFSZ,
100 .flags = {
101 .ext_buffer = 1,
102 .pipe_bof = 1,
103 .force_short_xfer = 1
104 },
105 .callback = rtwn_bulk_tx_callback_vi,
106 .timeout = RTWN_TX_TIMEOUT, /* ms */
107 },
108 [RTWN_BULK_TX_VO] = {
109 .type = UE_BULK,
110 .endpoint = UE_ADDR_ANY,
111 .direction = UE_DIR_OUT,
112 .bufsize = RTWN_USB_TXBUFSZ,
113 .flags = {
114 .ext_buffer = 1,
115 .pipe_bof = 1,
116 .force_short_xfer = 1
117 },
118 .callback = rtwn_bulk_tx_callback_vo,
119 .timeout = RTWN_TX_TIMEOUT, /* ms */
120 },
121 };
122
123 static void
rtwn_usb_setup_queues(struct rtwn_usb_softc * uc)124 rtwn_usb_setup_queues(struct rtwn_usb_softc *uc)
125 {
126 struct rtwn_softc *sc = &uc->uc_sc;
127 int hasnq, haslq, nqueues, nqpages, nrempages;
128
129 /* Get Tx queues to USB endpoints mapping. */
130 hasnq = haslq = 0;
131 switch (uc->ntx) {
132 case 4:
133 case 3:
134 haslq = 1;
135 /* FALLTHROUGH */
136 case 2:
137 hasnq = 1;
138 /* FALLTHROUGH */
139 default:
140 break;
141 }
142 nqueues = 1 + hasnq + haslq;
143
144 /* Get the number of pages for each queue. */
145 nqpages = (sc->page_count - sc->npubqpages) / nqueues;
146
147 /*
148 * The remaining pages are assigned to the high priority
149 * queue.
150 */
151 nrempages = (sc->page_count - sc->npubqpages) % nqueues;
152
153 sc->nhqpages = nqpages + nrempages;
154 sc->nnqpages = (hasnq ? nqpages : 0);
155 sc->nlqpages = (haslq ? nqpages : 0);
156 }
157
158 int
rtwn_usb_setup_endpoints(struct rtwn_usb_softc * uc)159 rtwn_usb_setup_endpoints(struct rtwn_usb_softc *uc)
160 {
161 struct usb_config *rtwn_config;
162 struct rtwn_softc *sc = &uc->uc_sc;
163 const uint8_t iface_index = RTWN_IFACE_INDEX;
164 struct usb_endpoint *ep, *ep_end;
165 uint8_t addr[RTWN_MAX_EPOUT];
166 int error;
167
168 /* Determine the number of bulk-out pipes. */
169 uc->ntx = 0;
170 ep = uc->uc_udev->endpoints;
171 ep_end = uc->uc_udev->endpoints + uc->uc_udev->endpoints_max;
172 for (; ep != ep_end; ep++) {
173 uint8_t eaddr;
174
175 if ((ep->edesc == NULL) || (ep->iface_index != iface_index))
176 continue;
177
178 eaddr = ep->edesc->bEndpointAddress;
179 RTWN_DPRINTF(sc, RTWN_DEBUG_USB,
180 "%s: endpoint: addr %u, direction %s\n", __func__,
181 UE_GET_ADDR(eaddr), UE_GET_DIR(eaddr) == UE_DIR_OUT ?
182 "output" : "input");
183
184 if (UE_GET_DIR(eaddr) == UE_DIR_OUT) {
185 if (uc->ntx == RTWN_MAX_EPOUT)
186 break;
187
188 addr[uc->ntx++] = UE_GET_ADDR(eaddr);
189 }
190 }
191 if (uc->ntx == 0 || uc->ntx > RTWN_MAX_EPOUT) {
192 device_printf(sc->sc_dev,
193 "%s: invalid number of Tx bulk pipes (%d)\n", __func__,
194 uc->ntx);
195 return (EINVAL);
196 }
197
198 rtwn_config = malloc(sizeof(rtwn_config_common), M_TEMP, M_WAITOK);
199 memcpy(rtwn_config, rtwn_config_common, sizeof(rtwn_config_common));
200
201 /* NB: keep in sync with rtwn_dma_init(). */
202 rtwn_config[RTWN_BULK_TX_VO].endpoint = addr[0];
203 uc->wme2qid[WME_AC_VO] = RTWN_BULK_TX_VO;
204 switch (uc->ntx) {
205 case 4:
206 case 3:
207 rtwn_config[RTWN_BULK_TX_BE].endpoint = addr[2];
208 rtwn_config[RTWN_BULK_TX_BK].endpoint = addr[2];
209 rtwn_config[RTWN_BULK_TX_VI].endpoint = addr[1];
210 uc->wme2qid[WME_AC_BE] = RTWN_BULK_TX_BE;
211 uc->wme2qid[WME_AC_BK] = RTWN_BULK_TX_BE;
212 uc->wme2qid[WME_AC_VI] = RTWN_BULK_TX_VI;
213 break;
214 case 2:
215 rtwn_config[RTWN_BULK_TX_BE].endpoint = addr[1];
216 rtwn_config[RTWN_BULK_TX_BK].endpoint = addr[1];
217 rtwn_config[RTWN_BULK_TX_VI].endpoint = addr[0];
218 uc->wme2qid[WME_AC_BE] = RTWN_BULK_TX_VI;
219 uc->wme2qid[WME_AC_BK] = RTWN_BULK_TX_VI;
220 uc->wme2qid[WME_AC_VI] = RTWN_BULK_TX_VO;
221 break;
222 case 1:
223 rtwn_config[RTWN_BULK_TX_BE].endpoint = addr[0];
224 rtwn_config[RTWN_BULK_TX_BK].endpoint = addr[0];
225 rtwn_config[RTWN_BULK_TX_VI].endpoint = addr[0];
226
227 uc->wme2qid[WME_AC_BE] = RTWN_BULK_TX_VO;
228 uc->wme2qid[WME_AC_BK] = RTWN_BULK_TX_VO;
229 uc->wme2qid[WME_AC_VI] = RTWN_BULK_TX_VO;
230 break;
231 default:
232 KASSERT(0, ("unhandled number of endpoints %d\n", uc->ntx));
233 break;
234 }
235
236 rtwn_config[RTWN_BULK_RX].bufsize =
237 uc->uc_rx_buf_size * RTWN_USB_RXBUFSZ_UNIT;
238 error = usbd_transfer_setup(uc->uc_udev, &iface_index,
239 uc->uc_xfer, rtwn_config, RTWN_BULK_EP_COUNT, uc, &sc->sc_mtx);
240 free(rtwn_config, M_TEMP);
241
242 if (error) {
243 device_printf(sc->sc_dev, "could not allocate USB transfers, "
244 "err=%s\n", usbd_errstr(error));
245 return (error);
246 }
247
248 /* Assign pages for each queue (if not done). */
249 if (sc->nhqpages == 0 && sc->nnqpages == 0 && sc->nlqpages == 0)
250 rtwn_usb_setup_queues(uc);
251
252 return (0);
253 }
254
255 uint16_t
rtwn_usb_get_qmap(struct rtwn_softc * sc)256 rtwn_usb_get_qmap(struct rtwn_softc *sc)
257 {
258 struct rtwn_usb_softc *uc = RTWN_USB_SOFTC(sc);
259
260 switch (uc->ntx) {
261 case 1:
262 return (R92C_TRXDMA_CTRL_QMAP_HQ);
263 case 2:
264 return (R92C_TRXDMA_CTRL_QMAP_HQ_NQ);
265 default:
266 return (R92C_TRXDMA_CTRL_QMAP_3EP);
267 }
268 }
269