1 | /* $NetBSD: ld_sdmmc.c,v 1.23 2016/09/27 03:33:33 pgoyette Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2008 KIYOHARA Takashi |
5 | * All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * |
16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
19 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
20 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
22 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
24 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
25 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
26 | * POSSIBILITY OF SUCH DAMAGE. |
27 | * |
28 | */ |
29 | |
30 | #include <sys/cdefs.h> |
31 | __KERNEL_RCSID(0, "$NetBSD: ld_sdmmc.c,v 1.23 2016/09/27 03:33:33 pgoyette Exp $" ); |
32 | |
33 | #ifdef _KERNEL_OPT |
34 | #include "opt_sdmmc.h" |
35 | #endif |
36 | |
37 | #include <sys/param.h> |
38 | #include <sys/systm.h> |
39 | #include <sys/kernel.h> |
40 | #include <sys/device.h> |
41 | #include <sys/buf.h> |
42 | #include <sys/bufq.h> |
43 | #include <sys/bus.h> |
44 | #include <sys/endian.h> |
45 | #include <sys/dkio.h> |
46 | #include <sys/disk.h> |
47 | #include <sys/kthread.h> |
48 | #include <sys/module.h> |
49 | |
50 | #include <dev/ldvar.h> |
51 | |
52 | #include <dev/sdmmc/sdmmcvar.h> |
53 | |
54 | #include "ioconf.h" |
55 | |
56 | #ifdef LD_SDMMC_DEBUG |
57 | #define DPRINTF(s) printf s |
58 | #else |
59 | #define DPRINTF(s) /**/ |
60 | #endif |
61 | |
62 | struct ld_sdmmc_softc; |
63 | |
64 | struct ld_sdmmc_task { |
65 | struct sdmmc_task task; |
66 | |
67 | struct ld_sdmmc_softc *task_sc; |
68 | struct buf *task_bp; |
69 | }; |
70 | |
71 | struct ld_sdmmc_softc { |
72 | struct ld_softc sc_ld; |
73 | int sc_hwunit; |
74 | |
75 | struct sdmmc_function *sc_sf; |
76 | #define LD_SDMMC_MAXQUEUECNT 4 |
77 | struct ld_sdmmc_task sc_task[LD_SDMMC_MAXQUEUECNT]; |
78 | int sc_nexttask; |
79 | }; |
80 | |
81 | static int ld_sdmmc_match(device_t, cfdata_t, void *); |
82 | static void ld_sdmmc_attach(device_t, device_t, void *); |
83 | static int ld_sdmmc_detach(device_t, int); |
84 | |
85 | static int ld_sdmmc_dump(struct ld_softc *, void *, int, int); |
86 | static int ld_sdmmc_start(struct ld_softc *, struct buf *); |
87 | |
88 | static void ld_sdmmc_doattach(void *); |
89 | static void ld_sdmmc_dobio(void *); |
90 | |
91 | CFATTACH_DECL_NEW(ld_sdmmc, sizeof(struct ld_sdmmc_softc), |
92 | ld_sdmmc_match, ld_sdmmc_attach, ld_sdmmc_detach, NULL); |
93 | |
94 | |
95 | /* ARGSUSED */ |
96 | static int |
97 | ld_sdmmc_match(device_t parent, cfdata_t match, void *aux) |
98 | { |
99 | struct sdmmc_softc *sdmsc = device_private(parent); |
100 | |
101 | if (ISSET(sdmsc->sc_flags, SMF_MEM_MODE)) |
102 | return 1; |
103 | return 0; |
104 | } |
105 | |
106 | /* ARGSUSED */ |
107 | static void |
108 | ld_sdmmc_attach(device_t parent, device_t self, void *aux) |
109 | { |
110 | struct ld_sdmmc_softc *sc = device_private(self); |
111 | struct sdmmc_attach_args *sa = aux; |
112 | struct ld_softc *ld = &sc->sc_ld; |
113 | struct lwp *lwp; |
114 | |
115 | ld->sc_dv = self; |
116 | |
117 | aprint_normal(": <0x%02x:0x%04x:%s:0x%02x:0x%08x:0x%03x>\n" , |
118 | sa->sf->cid.mid, sa->sf->cid.oid, sa->sf->cid.pnm, |
119 | sa->sf->cid.rev, sa->sf->cid.psn, sa->sf->cid.mdt); |
120 | aprint_naive("\n" ); |
121 | |
122 | sc->sc_nexttask = 0; |
123 | |
124 | sc->sc_hwunit = 0; /* always 0? */ |
125 | sc->sc_sf = sa->sf; |
126 | |
127 | ld->sc_flags = LDF_ENABLED; |
128 | ld->sc_secperunit = sc->sc_sf->csd.capacity; |
129 | ld->sc_secsize = SDMMC_SECTOR_SIZE; |
130 | ld->sc_maxxfer = MAXPHYS; |
131 | ld->sc_maxqueuecnt = LD_SDMMC_MAXQUEUECNT; |
132 | ld->sc_dump = ld_sdmmc_dump; |
133 | ld->sc_start = ld_sdmmc_start; |
134 | |
135 | /* |
136 | * It is avoided that the error occurs when the card attaches it, |
137 | * when wedge is supported. |
138 | */ |
139 | config_pending_incr(self); |
140 | if (kthread_create(PRI_NONE, KTHREAD_MPSAFE, NULL, |
141 | ld_sdmmc_doattach, sc, &lwp, "%sattach" , device_xname(self))) { |
142 | aprint_error_dev(self, "couldn't create thread\n" ); |
143 | } |
144 | } |
145 | |
146 | static void |
147 | ld_sdmmc_doattach(void *arg) |
148 | { |
149 | struct ld_sdmmc_softc *sc = (struct ld_sdmmc_softc *)arg; |
150 | struct ld_softc *ld = &sc->sc_ld; |
151 | struct sdmmc_softc *ssc = device_private(device_parent(ld->sc_dv)); |
152 | |
153 | ldattach(ld, BUFQ_DISK_DEFAULT_STRAT); |
154 | aprint_normal_dev(ld->sc_dv, "%d-bit width," , sc->sc_sf->width); |
155 | if (ssc->sc_transfer_mode != NULL) |
156 | aprint_normal(" %s," , ssc->sc_transfer_mode); |
157 | if ((ssc->sc_busclk / 1000) != 0) |
158 | aprint_normal(" %u.%03u MHz\n" , |
159 | ssc->sc_busclk / 1000, ssc->sc_busclk % 1000); |
160 | else |
161 | aprint_normal(" %u KHz\n" , ssc->sc_busclk % 1000); |
162 | config_pending_decr(ld->sc_dv); |
163 | kthread_exit(0); |
164 | } |
165 | |
166 | static int |
167 | ld_sdmmc_detach(device_t dev, int flags) |
168 | { |
169 | struct ld_sdmmc_softc *sc = device_private(dev); |
170 | struct ld_softc *ld = &sc->sc_ld; |
171 | int rv; |
172 | |
173 | if ((rv = ldbegindetach(ld, flags)) != 0) |
174 | return rv; |
175 | ldenddetach(ld); |
176 | |
177 | return 0; |
178 | } |
179 | |
180 | static int |
181 | ld_sdmmc_start(struct ld_softc *ld, struct buf *bp) |
182 | { |
183 | struct ld_sdmmc_softc *sc = device_private(ld->sc_dv); |
184 | struct ld_sdmmc_task *task = &sc->sc_task[sc->sc_nexttask]; |
185 | |
186 | sc->sc_nexttask = (sc->sc_nexttask + 1) % LD_SDMMC_MAXQUEUECNT; |
187 | |
188 | task->task_sc = sc; |
189 | task->task_bp = bp; |
190 | sdmmc_init_task(&task->task, ld_sdmmc_dobio, task); |
191 | |
192 | sdmmc_add_task(sc->sc_sf->sc, &task->task); |
193 | |
194 | return 0; |
195 | } |
196 | |
197 | static void |
198 | ld_sdmmc_dobio(void *arg) |
199 | { |
200 | struct ld_sdmmc_task *task = (struct ld_sdmmc_task *)arg; |
201 | struct ld_sdmmc_softc *sc = task->task_sc; |
202 | struct buf *bp = task->task_bp; |
203 | int error; |
204 | |
205 | /* |
206 | * I/O operation |
207 | */ |
208 | DPRINTF(("%s: I/O operation (dir=%s, blkno=0x%jx, bcnt=0x%x)\n" , |
209 | device_xname(sc->sc_ld.sc_dv), bp->b_flags & B_READ ? "IN" : "OUT" , |
210 | bp->b_rawblkno, bp->b_bcount)); |
211 | |
212 | /* is everything done in terms of blocks? */ |
213 | if (bp->b_rawblkno >= sc->sc_sf->csd.capacity) { |
214 | /* trying to read or write past end of device */ |
215 | aprint_error_dev(sc->sc_ld.sc_dv, |
216 | "blkno 0x%" PRIu64 " exceeds capacity %d\n" , |
217 | bp->b_rawblkno, sc->sc_sf->csd.capacity); |
218 | bp->b_error = EINVAL; |
219 | bp->b_resid = bp->b_bcount; |
220 | lddone(&sc->sc_ld, bp); |
221 | return; |
222 | } |
223 | |
224 | if (bp->b_flags & B_READ) |
225 | error = sdmmc_mem_read_block(sc->sc_sf, bp->b_rawblkno, |
226 | bp->b_data, bp->b_bcount); |
227 | else |
228 | error = sdmmc_mem_write_block(sc->sc_sf, bp->b_rawblkno, |
229 | bp->b_data, bp->b_bcount); |
230 | if (error) { |
231 | DPRINTF(("%s: error %d\n" , device_xname(sc->sc_ld.sc_dv), |
232 | error)); |
233 | bp->b_error = error; |
234 | bp->b_resid = bp->b_bcount; |
235 | } else { |
236 | bp->b_resid = 0; |
237 | } |
238 | |
239 | lddone(&sc->sc_ld, bp); |
240 | } |
241 | |
242 | static int |
243 | ld_sdmmc_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) |
244 | { |
245 | struct ld_sdmmc_softc *sc = device_private(ld->sc_dv); |
246 | |
247 | return sdmmc_mem_write_block(sc->sc_sf, blkno, data, |
248 | blkcnt * ld->sc_secsize); |
249 | } |
250 | |
251 | MODULE(MODULE_CLASS_DRIVER, ld_sdmmc, "ld" ); |
252 | |
253 | #ifdef _MODULE |
254 | /* |
255 | * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd" |
256 | * XXX it will be defined in the common-code module |
257 | */ |
258 | #undef CFDRIVER_DECL |
259 | #define CFDRIVER_DECL(name, class, attr) |
260 | #include "ioconf.c" |
261 | #endif |
262 | |
263 | static int |
264 | ld_sdmmc_modcmd(modcmd_t cmd, void *opaque) |
265 | { |
266 | #ifdef _MODULE |
267 | /* |
268 | * We ignore the cfdriver_vec[] that ioconf provides, since |
269 | * the cfdrivers are attached already. |
270 | */ |
271 | static struct cfdriver * const no_cfdriver_vec[] = { NULL }; |
272 | #endif |
273 | int error = 0; |
274 | |
275 | #ifdef _MODULE |
276 | switch (cmd) { |
277 | case MODULE_CMD_INIT: |
278 | error = config_init_component(no_cfdriver_vec, |
279 | cfattach_ioconf_ld_sdmmc, cfdata_ioconf_ld_sdmmc); |
280 | break; |
281 | case MODULE_CMD_FINI: |
282 | error = config_fini_component(no_cfdriver_vec, |
283 | cfattach_ioconf_ld_sdmmc, cfdata_ioconf_ld_sdmmc); |
284 | break; |
285 | default: |
286 | error = ENOTTY; |
287 | break; |
288 | } |
289 | #endif |
290 | |
291 | return error; |
292 | } |
293 | |