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/mbuf.h>
28 #include <sys/kernel.h>
29 #include <sys/socket.h>
30 #include <sys/systm.h>
31 #include <sys/malloc.h>
32 #include <sys/queue.h>
33 #include <sys/taskqueue.h>
34 #include <sys/bus.h>
35 #include <sys/endian.h>
36 #include <sys/linker.h>
37
38 #include <net/if.h>
39 #include <net/ethernet.h>
40 #include <net/if_media.h>
41
42 #include <net80211/ieee80211_var.h>
43 #include <net80211/ieee80211_radiotap.h>
44
45 #include <dev/rtwn/if_rtwnreg.h>
46 #include <dev/rtwn/if_rtwnvar.h>
47
48 #include <dev/rtwn/if_rtwn_debug.h>
49
50 #include <dev/rtwn/rtl8188e/r88e.h>
51 #include <dev/rtwn/rtl8188e/r88e_reg.h>
52 #include <dev/rtwn/rtl8188e/r88e_fw_cmd.h>
53
54 #ifndef RTWN_WITHOUT_UCODE
55 int
r88e_fw_cmd(struct rtwn_softc * sc,uint8_t id,const void * buf,int len)56 r88e_fw_cmd(struct rtwn_softc *sc, uint8_t id, const void *buf, int len)
57 {
58 struct r88e_fw_cmd cmd;
59 int ntries, error;
60
61 if (!(sc->sc_flags & RTWN_FW_LOADED)) {
62 RTWN_DPRINTF(sc, RTWN_DEBUG_FIRMWARE, "%s: firmware "
63 "was not loaded; command (id %d) will be discarded\n",
64 __func__, id);
65 return (0);
66 }
67
68 /* Wait for current FW box to be empty. */
69 for (ntries = 0; ntries < 100; ntries++) {
70 if (!(rtwn_read_1(sc, R92C_HMETFR) & (1 << sc->fwcur)))
71 break;
72 rtwn_delay(sc, 2000);
73 }
74 if (ntries == 100) {
75 device_printf(sc->sc_dev,
76 "could not send firmware command\n");
77 return (ETIMEDOUT);
78 }
79 memset(&cmd, 0, sizeof(cmd));
80 cmd.id = id;
81 KASSERT(len <= sizeof(cmd.msg),
82 ("%s: firmware command too long (%d > %zu)\n",
83 __func__, len, sizeof(cmd.msg)));
84 memcpy(cmd.msg, buf, len);
85
86 /* Write the first word last since that will trigger the FW. */
87 if (len > 3) {
88 error = rtwn_write_4(sc, R88E_HMEBOX_EXT(sc->fwcur),
89 *(uint32_t *)((uint8_t *)&cmd + 4));
90 if (error != 0)
91 return (error);
92 }
93 error = rtwn_write_4(sc, R92C_HMEBOX(sc->fwcur), *(uint32_t *)&cmd);
94 if (error != 0)
95 return (error);
96
97 sc->fwcur = (sc->fwcur + 1) % R92C_H2C_NBOX;
98
99 return (0);
100 }
101
102 void
r88e_fw_reset(struct rtwn_softc * sc,int reason)103 r88e_fw_reset(struct rtwn_softc *sc, int reason)
104 {
105 uint16_t reg;
106
107 reg = rtwn_read_2(sc, R92C_SYS_FUNC_EN);
108 rtwn_write_2(sc, R92C_SYS_FUNC_EN, reg & ~R92C_SYS_FUNC_EN_CPUEN);
109
110 if (reason != RTWN_FW_RESET_SHUTDOWN) {
111 rtwn_write_2(sc, R92C_SYS_FUNC_EN,
112 reg | R92C_SYS_FUNC_EN_CPUEN);
113 }
114 }
115
116 void
r88e_fw_download_enable(struct rtwn_softc * sc,int enable)117 r88e_fw_download_enable(struct rtwn_softc *sc, int enable)
118 {
119 if (enable) {
120 /* MCU firmware download enable. */
121 rtwn_setbits_1(sc, R92C_MCUFWDL, 0, R92C_MCUFWDL_EN);
122 /* 8051 reset. */
123 rtwn_setbits_1_shift(sc, R92C_MCUFWDL, R92C_MCUFWDL_ROM_DLEN,
124 0, 2);
125 } else {
126 /* MCU download disable. */
127 rtwn_setbits_1(sc, R92C_MCUFWDL, R92C_MCUFWDL_EN, 0);
128 /* Reserved for f/w extension. */
129 rtwn_write_1(sc, R92C_MCUFWDL + 1, 0);
130 }
131 }
132 #endif
133
134 void
r88e_macid_enable_link(struct rtwn_softc * sc,int id,int enable)135 r88e_macid_enable_link(struct rtwn_softc *sc, int id, int enable)
136 {
137 uint32_t reg;
138
139 reg = R88E_MACID_NO_LINK;
140 if (id > 32)
141 reg += 4;
142
143 if (enable)
144 rtwn_setbits_4(sc, reg, 1 << (id % 32), 0);
145 else
146 rtwn_setbits_4(sc, reg, 0, 1 << (id % 32));
147
148 /* XXX max macid for tx reports */
149 }
150
151 void
r88e_set_media_status(struct rtwn_softc * sc,int macid)152 r88e_set_media_status(struct rtwn_softc *sc, int macid)
153 {
154 struct r88e_fw_cmd_msrrpt status;
155
156 if (macid & RTWN_MACID_VALID)
157 status.msrb0 = R88E_MSRRPT_B0_ASSOC;
158 else
159 status.msrb0 = R88E_MSRRPT_B0_DISASSOC;
160 status.macid = (macid & ~RTWN_MACID_VALID);
161
162 r88e_macid_enable_link(sc, status.macid,
163 (macid & RTWN_MACID_VALID) != 0);
164
165 #ifndef RTWN_WITHOUT_UCODE
166 if (r88e_fw_cmd(sc, R88E_CMD_MSR_RPT, &status, sizeof(status)) != 0) {
167 device_printf(sc->sc_dev, "%s: cannot change media status!\n",
168 __func__);
169 }
170 #endif
171 }
172
173 #ifndef RTWN_WITHOUT_UCODE
174 int
r88e_set_rsvd_page(struct rtwn_softc * sc,int probe_resp,int null,int qos_null)175 r88e_set_rsvd_page(struct rtwn_softc *sc, int probe_resp, int null,
176 int qos_null)
177 {
178 struct r88e_fw_cmd_rsvdpage rsvd;
179
180 rsvd.probe_resp = probe_resp;
181 rsvd.ps_poll = 0;
182 rsvd.null_data = null;
183 rsvd.null_data_qos = qos_null;
184 rsvd.null_data_qos_bt = 0;
185 return (r88e_fw_cmd(sc, R88E_CMD_RSVD_PAGE, &rsvd, sizeof(rsvd)));
186 }
187
188 int
r88e_set_pwrmode(struct rtwn_softc * sc,struct ieee80211vap * vap,int off)189 r88e_set_pwrmode(struct rtwn_softc *sc, struct ieee80211vap *vap,
190 int off)
191 {
192 struct r88e_fw_cmd_pwrmode mode;
193 int error;
194
195 if (off && vap->iv_state == IEEE80211_S_RUN &&
196 (vap->iv_flags & IEEE80211_F_PMGTON)) {
197 mode.mode = R88E_PWRMODE_LEG;
198 /*
199 * TODO: switch to RFOFF state
200 * (something is missing here - Rx stops with it).
201 */
202 #ifdef RTWN_TODO
203 mode.pwr_state = R88E_PWRMODE_STATE_RFOFF;
204 #else
205 mode.pwr_state = R88E_PWRMODE_STATE_RFON;
206 #endif
207 } else {
208 mode.mode = R88E_PWRMODE_CAM;
209 mode.pwr_state = R88E_PWRMODE_STATE_ALLON;
210 }
211 mode.pwrb1 =
212 SM(R88E_PWRMODE_B1_SMART_PS, R88E_PWRMODE_B1_LEG_NULLDATA) |
213 SM(R88E_PWRMODE_B1_RLBM, R88E_PWRMODE_B1_MODE_MIN);
214 /* XXX ignored */
215 mode.bcn_pass = 0;
216 mode.queue_uapsd = 0;
217 error = r88e_fw_cmd(sc, R88E_CMD_SET_PWRMODE, &mode, sizeof(mode));
218 if (error != 0) {
219 device_printf(sc->sc_dev,
220 "%s: CMD_SET_PWRMODE was not sent, error %d\n",
221 __func__, error);
222 }
223
224 return (error);
225 }
226 #endif
227