2 * Copyright (c) 2010 Broadcom Corporation
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.
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.
18 * @file bcmsdh_linux.c
21 #define __UNDEF_NO_VERSION__
23 #include <linux/netdevice.h>
24 #include <linux/pci.h>
25 #include <linux/completion.h>
32 #if defined(OOB_INTR_ONLY)
33 #include <linux/irq.h>
34 extern void dhdsdio_isr(void *args
);
35 #include <dngl_stats.h>
37 #endif /* defined(OOB_INTR_ONLY) */
38 #if defined(CONFIG_MACH_SANDGATE2G) || defined(CONFIG_MACH_LOGICPD_PXA270)
39 #if !defined(BCMPLATFORM_BUS)
40 #define BCMPLATFORM_BUS
41 #endif /* !defined(BCMPLATFORM_BUS) */
43 #include <linux/platform_device.h>
44 #endif /* CONFIG_MACH_SANDGATE2G */
46 #include "dngl_stats.h"
50 * SDIO Host Controller info
52 typedef struct bcmsdh_hc bcmsdh_hc_t
;
56 #ifdef BCMPLATFORM_BUS
57 struct device
*dev
; /* platform device handle */
59 struct pci_dev
*dev
; /* pci device handle */
60 #endif /* BCMPLATFORM_BUS */
61 void *regs
; /* SDIO Host Controller address */
62 bcmsdh_info_t
*sdh
; /* SDIO Host Controller handle */
65 unsigned long oob_flags
; /* OOB Host specifiction
67 bool oob_irq_registered
;
68 #if defined(OOB_INTR_ONLY)
72 static bcmsdh_hc_t
*sdhcinfo
;
74 /* driver info, initialized when bcmsdh_register is called */
75 static bcmsdh_driver_t drvinfo
= { NULL
, NULL
};
77 /* debugging macros */
81 * Checks to see if vendor and device IDs match a supported SDIO Host Controller.
83 bool bcmsdh_chipmatch(u16 vendor
, u16 device
)
85 /* Add other vendors and devices as required */
88 /* Check for Arasan host controller */
89 if (vendor
== VENDOR_SI_IMAGE
)
92 /* Check for BRCM 27XX Standard host controller */
93 if (device
== BCM27XX_SDIOH_ID
&& vendor
== PCI_VENDOR_ID_BROADCOM
)
96 /* Check for BRCM Standard host controller */
97 if (device
== SDIOH_FPGA_ID
&& vendor
== PCI_VENDOR_ID_BROADCOM
)
100 /* Check for TI PCIxx21 Standard host controller */
101 if (device
== PCIXX21_SDIOH_ID
&& vendor
== VENDOR_TI
)
104 if (device
== PCIXX21_SDIOH0_ID
&& vendor
== VENDOR_TI
)
107 /* Ricoh R5C822 Standard SDIO Host */
108 if (device
== R5C822_SDIOH_ID
&& vendor
== VENDOR_RICOH
)
111 /* JMicron Standard SDIO Host */
112 if (device
== JMICRON_SDIOH_ID
&& vendor
== VENDOR_JMICRON
)
114 #endif /* BCMSDIOH_STD */
116 /* This is the PciSpiHost. */
117 if (device
== SPIH_FPGA_ID
&& vendor
== PCI_VENDOR_ID_BROADCOM
) {
120 #endif /* BCMSDIOH_SPI */
125 #if defined(BCMPLATFORM_BUS)
126 #if defined(BCMLXSDMMC)
127 /* forward declarations */
128 int bcmsdh_probe(struct device
*dev
);
129 EXPORT_SYMBOL(bcmsdh_probe
);
131 int bcmsdh_remove(struct device
*dev
);
132 EXPORT_SYMBOL(bcmsdh_remove
);
135 /* forward declarations */
136 static int __devinit
bcmsdh_probe(struct device
*dev
);
137 static int __devexit
bcmsdh_remove(struct device
*dev
);
138 #endif /* BCMLXSDMMC */
142 #endif /* BCMLXSDMMC */
143 int bcmsdh_probe(struct device
*dev
)
145 bcmsdh_hc_t
*sdhc
= NULL
;
146 unsigned long regs
= 0;
147 bcmsdh_info_t
*sdh
= NULL
;
148 #if !defined(BCMLXSDMMC) && defined(BCMPLATFORM_BUS)
149 struct platform_device
*pdev
;
151 #endif /* BCMLXSDMMC */
154 unsigned long irq_flags
= 0;
156 #if !defined(BCMLXSDMMC) && defined(BCMPLATFORM_BUS)
157 pdev
= to_platform_device(dev
);
158 r
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
159 irq
= platform_get_irq(pdev
, 0);
160 if (!r
|| irq
== NO_IRQ
)
162 #endif /* BCMLXSDMMC */
164 #if defined(OOB_INTR_ONLY)
167 IORESOURCE_IRQ
| IORESOURCE_IRQ_HIGHLEVEL
|
168 IORESOURCE_IRQ_SHAREABLE
;
170 irq_flags
= IRQF_TRIGGER_FALLING
;
172 irq
= dhd_customer_oob_irq_map(&irq_flags
);
174 SDLX_MSG(("%s: Host irq is not defined\n", __func__
));
177 #endif /* defined(OOB_INTR_ONLY) */
178 /* allocate SDIO Host Controller state info */
179 sdhc
= kzalloc(sizeof(bcmsdh_hc_t
), GFP_ATOMIC
);
181 SDLX_MSG(("%s: out of memory\n", __func__
));
184 sdhc
->dev
= (void *)dev
;
187 sdh
= bcmsdh_attach((void *)0, (void **)®s
, irq
);
189 SDLX_MSG(("%s: bcmsdh_attach failed\n", __func__
));
193 sdh
= bcmsdh_attach((void *)r
->start
, (void **)®s
, irq
);
195 SDLX_MSG(("%s: bcmsdh_attach failed\n", __func__
));
198 #endif /* BCMLXSDMMC */
201 sdhc
->oob_flags
= irq_flags
;
202 sdhc
->oob_irq_registered
= false; /* to make sure.. */
203 #if defined(OOB_INTR_ONLY)
204 spin_lock_init(&sdhc
->irq_lock
);
207 /* chain SDIO Host Controller info together */
208 sdhc
->next
= sdhcinfo
;
210 /* Read the vendor/device ID from the CIS */
211 vendevid
= bcmsdh_query_device(sdh
);
213 /* try to attach to the target device */
214 sdhc
->ch
= drvinfo
.attach((vendevid
>> 16), (vendevid
& 0xFFFF),
215 0, 0, 0, 0, (void *)regs
, sdh
);
217 SDLX_MSG(("%s: device attach failed\n", __func__
));
227 bcmsdh_detach(sdhc
->sdh
);
236 #endif /* BCMLXSDMMC */
237 int bcmsdh_remove(struct device
*dev
)
239 bcmsdh_hc_t
*sdhc
, *prev
;
242 drvinfo
.detach(sdhc
->ch
);
243 bcmsdh_detach(sdhc
->sdh
);
244 /* find the SDIO Host Controller state for this pdev
245 and take it out from the list */
246 for (sdhc
= sdhcinfo
, prev
= NULL
; sdhc
; sdhc
= sdhc
->next
) {
247 if (sdhc
->dev
== (void *)dev
) {
249 prev
->next
= sdhc
->next
;
257 SDLX_MSG(("%s: failed\n", __func__
));
261 /* release SDIO Host Controller info */
264 #if !defined(BCMLXSDMMC)
265 dev_set_drvdata(dev
, NULL
);
266 #endif /* !defined(BCMLXSDMMC) */
270 #endif /* BCMPLATFORM_BUS */
272 extern int sdio_function_init(void);
274 int bcmsdh_register(bcmsdh_driver_t
*driver
)
278 SDLX_MSG(("Linux Kernel SDIO/MMC Driver\n"));
279 return sdio_function_init();
282 extern void sdio_function_cleanup(void);
284 void bcmsdh_unregister(void)
286 sdio_function_cleanup();
289 #if defined(OOB_INTR_ONLY)
290 void bcmsdh_oob_intr_set(bool enable
)
292 static bool curstate
= 1;
295 spin_lock_irqsave(&sdhcinfo
->irq_lock
, flags
);
296 if (curstate
!= enable
) {
298 enable_irq(sdhcinfo
->oob_irq
);
300 disable_irq_nosync(sdhcinfo
->oob_irq
);
303 spin_unlock_irqrestore(&sdhcinfo
->irq_lock
, flags
);
306 static irqreturn_t
wlan_oob_irq(int irq
, void *dev_id
)
310 dhdp
= (dhd_pub_t
*) dev_get_drvdata(sdhcinfo
->dev
);
312 bcmsdh_oob_intr_set(0);
315 SDLX_MSG(("Out of band GPIO interrupt fired way too early\n"));
319 dhdsdio_isr((void *)dhdp
->bus
);
324 int bcmsdh_register_oob_intr(void *dhdp
)
328 SDLX_MSG(("%s Enter\n", __func__
));
330 sdhcinfo
->oob_flags
=
331 IORESOURCE_IRQ
| IORESOURCE_IRQ_HIGHLEVEL
|
332 IORESOURCE_IRQ_SHAREABLE
;
333 dev_set_drvdata(sdhcinfo
->dev
, dhdp
);
335 if (!sdhcinfo
->oob_irq_registered
) {
336 SDLX_MSG(("%s IRQ=%d Type=%X\n", __func__
,
337 (int)sdhcinfo
->oob_irq
, (int)sdhcinfo
->oob_flags
));
338 /* Refer to customer Host IRQ docs about
339 proper irqflags definition */
341 request_irq(sdhcinfo
->oob_irq
, wlan_oob_irq
,
342 sdhcinfo
->oob_flags
, "bcmsdh_sdmmc", NULL
);
346 irq_set_irq_wake(sdhcinfo
->oob_irq
, 1);
347 sdhcinfo
->oob_irq_registered
= true;
353 void bcmsdh_unregister_oob_intr(void)
355 SDLX_MSG(("%s: Enter\n", __func__
));
357 irq_set_irq_wake(sdhcinfo
->oob_irq
, 0);
358 disable_irq(sdhcinfo
->oob_irq
); /* just in case.. */
359 free_irq(sdhcinfo
->oob_irq
, NULL
);
360 sdhcinfo
->oob_irq_registered
= false;
362 #endif /* defined(OOB_INTR_ONLY) */
363 /* Module parameters specific to each host-controller driver */
365 extern uint sd_msglevel
; /* Debug message level */
366 module_param(sd_msglevel
, uint
, 0);
368 extern uint sd_power
; /* 0 = SD Power OFF,
370 module_param(sd_power
, uint
, 0);
372 extern uint sd_clock
; /* SD Clock Control, 0 = SD Clock OFF,
374 module_param(sd_clock
, uint
, 0);
376 extern uint sd_divisor
; /* Divisor (-1 means external clock) */
377 module_param(sd_divisor
, uint
, 0);
379 extern uint sd_sdmode
; /* Default is SD4, 0=SPI, 1=SD1, 2=SD4 */
380 module_param(sd_sdmode
, uint
, 0);
382 extern uint sd_hiok
; /* Ok to use hi-speed mode */
383 module_param(sd_hiok
, uint
, 0);
385 extern uint sd_f2_blocksize
;
386 module_param(sd_f2_blocksize
, int, 0);
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