1 /*
2 * Copyright (c) 2010 Broadcom Corporation
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16 #include <linux/types.h>
17 #include <linux/sched.h> /* request_irq() */
18 #include <linux/netdevice.h>
19 #include <bcmdefs.h>
20 #include <bcmutils.h>
21 #include <sdio.h> /* SDIO Specs */
22 #include <bcmsdbus.h> /* bcmsdh to/from specific controller APIs */
23 #include <sdiovar.h> /* to get msglevel bit values */
24
25 #include <linux/mmc/core.h>
26 #include <linux/mmc/card.h>
27 #include <linux/mmc/sdio_func.h>
28 #include <linux/mmc/sdio_ids.h>
29
30 #if !defined(SDIO_VENDOR_ID_BROADCOM)
31 #define SDIO_VENDOR_ID_BROADCOM 0x02d0
32 #endif /* !defined(SDIO_VENDOR_ID_BROADCOM) */
33
34 #define SDIO_DEVICE_ID_BROADCOM_DEFAULT 0x0000
35
36 #if !defined(SDIO_DEVICE_ID_BROADCOM_4325_SDGWB)
37 #define SDIO_DEVICE_ID_BROADCOM_4325_SDGWB 0x0492 /* BCM94325SDGWB */
38 #endif /* !defined(SDIO_DEVICE_ID_BROADCOM_4325_SDGWB) */
39 #if !defined(SDIO_DEVICE_ID_BROADCOM_4325)
40 #define SDIO_DEVICE_ID_BROADCOM_4325 0x0493
41 #endif /* !defined(SDIO_DEVICE_ID_BROADCOM_4325) */
42 #if !defined(SDIO_DEVICE_ID_BROADCOM_4329)
43 #define SDIO_DEVICE_ID_BROADCOM_4329 0x4329
44 #endif /* !defined(SDIO_DEVICE_ID_BROADCOM_4329) */
45 #if !defined(SDIO_DEVICE_ID_BROADCOM_4319)
46 #define SDIO_DEVICE_ID_BROADCOM_4319 0x4319
47 #endif /* !defined(SDIO_DEVICE_ID_BROADCOM_4329) */
48
49 #include <bcmsdh_sdmmc.h>
50
51 #include <dhd_dbg.h>
52 #include <wl_cfg80211.h>
53
54 extern void sdioh_sdmmc_devintr_off(sdioh_info_t *sd);
55 extern void sdioh_sdmmc_devintr_on(sdioh_info_t *sd);
56
57 int sdio_function_init(void);
58 void sdio_function_cleanup(void);
59
60 /* module param defaults */
61 static int clockoverride;
62
63 module_param(clockoverride, int, 0644);
64 MODULE_PARM_DESC(clockoverride, "SDIO card clock override");
65
66 PBCMSDH_SDMMC_INSTANCE gInstance;
67
68 /* Maximum number of bcmsdh_sdmmc devices supported by driver */
69 #define BCMSDH_SDMMC_MAX_DEVICES 1
70
71 extern int bcmsdh_probe(struct device *dev);
72 extern int bcmsdh_remove(struct device *dev);
73 struct device sdmmc_dev;
74
bcmsdh_sdmmc_probe(struct sdio_func * func,const struct sdio_device_id * id)75 static int bcmsdh_sdmmc_probe(struct sdio_func *func,
76 const struct sdio_device_id *id)
77 {
78 int ret = 0;
79 static struct sdio_func sdio_func_0;
80 sd_trace(("bcmsdh_sdmmc: %s Enter\n", __func__));
81 sd_trace(("sdio_bcmsdh: func->class=%x\n", func->class));
82 sd_trace(("sdio_vendor: 0x%04x\n", func->vendor));
83 sd_trace(("sdio_device: 0x%04x\n", func->device));
84 sd_trace(("Function#: 0x%04x\n", func->num));
85
86 if (func->num == 1) {
87 sdio_func_0.num = 0;
88 sdio_func_0.card = func->card;
89 gInstance->func[0] = &sdio_func_0;
90 if (func->device == 0x4) { /* 4318 */
91 gInstance->func[2] = NULL;
92 sd_trace(("NIC found, calling bcmsdh_probe...\n"));
93 ret = bcmsdh_probe(&sdmmc_dev);
94 }
95 }
96
97 gInstance->func[func->num] = func;
98
99 if (func->num == 2) {
100 wl_cfg80211_sdio_func(func);
101 sd_trace(("F2 found, calling bcmsdh_probe...\n"));
102 ret = bcmsdh_probe(&sdmmc_dev);
103 }
104
105 return ret;
106 }
107
bcmsdh_sdmmc_remove(struct sdio_func * func)108 static void bcmsdh_sdmmc_remove(struct sdio_func *func)
109 {
110 sd_trace(("bcmsdh_sdmmc: %s Enter\n", __func__));
111 sd_info(("sdio_bcmsdh: func->class=%x\n", func->class));
112 sd_info(("sdio_vendor: 0x%04x\n", func->vendor));
113 sd_info(("sdio_device: 0x%04x\n", func->device));
114 sd_info(("Function#: 0x%04x\n", func->num));
115
116 if (func->num == 2) {
117 sd_trace(("F2 found, calling bcmsdh_remove...\n"));
118 bcmsdh_remove(&sdmmc_dev);
119 }
120 }
121
122 /* devices we support, null terminated */
123 static const struct sdio_device_id bcmsdh_sdmmc_ids[] = {
124 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_DEFAULT)},
125 {SDIO_DEVICE
126 (SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4325_SDGWB)},
127 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4325)},
128 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
129 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4319)},
130 { /* end: all zeroes */ },
131 };
132
133 MODULE_DEVICE_TABLE(sdio, bcmsdh_sdmmc_ids);
134
135 static struct sdio_driver bcmsdh_sdmmc_driver = {
136 .probe = bcmsdh_sdmmc_probe,
137 .remove = bcmsdh_sdmmc_remove,
138 .name = "brcmfmac",
139 .id_table = bcmsdh_sdmmc_ids,
140 };
141
142 struct sdos_info {
143 sdioh_info_t *sd;
144 spinlock_t lock;
145 };
146
sdioh_sdmmc_osinit(sdioh_info_t * sd)147 int sdioh_sdmmc_osinit(sdioh_info_t *sd)
148 {
149 struct sdos_info *sdos;
150
151 sdos = kmalloc(sizeof(struct sdos_info), GFP_ATOMIC);
152 sd->sdos_info = (void *)sdos;
153 if (sdos == NULL)
154 return BCME_NOMEM;
155
156 sdos->sd = sd;
157 spin_lock_init(&sdos->lock);
158 return BCME_OK;
159 }
160
sdioh_sdmmc_osfree(sdioh_info_t * sd)161 void sdioh_sdmmc_osfree(sdioh_info_t *sd)
162 {
163 struct sdos_info *sdos;
164 ASSERT(sd && sd->sdos_info);
165
166 sdos = (struct sdos_info *)sd->sdos_info;
167 kfree(sdos);
168 }
169
170 /* Interrupt enable/disable */
sdioh_interrupt_set(sdioh_info_t * sd,bool enable)171 SDIOH_API_RC sdioh_interrupt_set(sdioh_info_t *sd, bool enable)
172 {
173 unsigned long flags;
174 struct sdos_info *sdos;
175
176 sd_trace(("%s: %s\n", __func__, enable ? "Enabling" : "Disabling"));
177
178 sdos = (struct sdos_info *)sd->sdos_info;
179 ASSERT(sdos);
180
181 #if !defined(OOB_INTR_ONLY)
182 if (enable && !(sd->intr_handler && sd->intr_handler_arg)) {
183 sd_err(("%s: no handler registered, will not enable\n",
184 __func__));
185 return SDIOH_API_RC_FAIL;
186 }
187 #endif /* !defined(OOB_INTR_ONLY) */
188
189 /* Ensure atomicity for enable/disable calls */
190 spin_lock_irqsave(&sdos->lock, flags);
191
192 sd->client_intr_enabled = enable;
193 if (enable)
194 sdioh_sdmmc_devintr_on(sd);
195 else
196 sdioh_sdmmc_devintr_off(sd);
197
198 spin_unlock_irqrestore(&sdos->lock, flags);
199
200 return SDIOH_API_RC_SUCCESS;
201 }
202
203 /*
204 * module init
205 */
sdio_function_init(void)206 int sdio_function_init(void)
207 {
208 int error = 0;
209 sd_trace(("bcmsdh_sdmmc: %s Enter\n", __func__));
210
211 gInstance = kzalloc(sizeof(BCMSDH_SDMMC_INSTANCE), GFP_KERNEL);
212 if (!gInstance)
213 return -ENOMEM;
214
215 memset(&sdmmc_dev, 0, sizeof(sdmmc_dev));
216 error = sdio_register_driver(&bcmsdh_sdmmc_driver);
217
218 return error;
219 }
220
221 /*
222 * module cleanup
223 */
224 extern int bcmsdh_remove(struct device *dev);
sdio_function_cleanup(void)225 void sdio_function_cleanup(void)
226 {
227 sd_trace(("%s Enter\n", __func__));
228
229 sdio_unregister_driver(&bcmsdh_sdmmc_driver);
230
231 kfree(gInstance);
232 }
233