[deliverable/linux.git] / sound / soc / intel / sst-dsp.c

/*
 * Intel Smart Sound Technology (SST) DSP Core Driver
 *
 * Copyright (C) 2013, Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */

#include <linux/slab.h>
#include <linux/export.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/io.h>

#include "sst-dsp.h"
#include "sst-dsp-priv.h"

#define CREATE_TRACE_POINTS
#include <trace/events/intel-sst.h>

/* Internal generic low-level SST IO functions - can be overidden */
void sst_shim32_write(void __iomem *addr, u32 offset, u32 value)
{
	writel(value, addr + offset);
}
EXPORT_SYMBOL_GPL(sst_shim32_write);

u32 sst_shim32_read(void __iomem *addr, u32 offset)
{
	return readl(addr + offset);
}
EXPORT_SYMBOL_GPL(sst_shim32_read);

void sst_shim32_write64(void __iomem *addr, u32 offset, u64 value)
{
	memcpy_toio(addr + offset, &value, sizeof(value));
}
EXPORT_SYMBOL_GPL(sst_shim32_write64);

u64 sst_shim32_read64(void __iomem *addr, u32 offset)
{
	u64 val;

	memcpy_fromio(&val, addr + offset, sizeof(val));
	return val;
}
EXPORT_SYMBOL_GPL(sst_shim32_read64);

static inline void _sst_memcpy_toio_32(volatile u32 __iomem *dest,
	u32 *src, size_t bytes)
{
	int i, words = bytes >> 2;

	for (i = 0; i < words; i++)
		writel(src[i], dest + i);
}

static inline void _sst_memcpy_fromio_32(u32 *dest,
	const volatile __iomem u32 *src, size_t bytes)
{
	int i, words = bytes >> 2;

	for (i = 0; i < words; i++)
		dest[i] = readl(src + i);
}

void sst_memcpy_toio_32(struct sst_dsp *sst,
	void __iomem *dest, void *src, size_t bytes)
{
	_sst_memcpy_toio_32(dest, src, bytes);
}
EXPORT_SYMBOL_GPL(sst_memcpy_toio_32);

void sst_memcpy_fromio_32(struct sst_dsp *sst, void *dest,
	void __iomem *src, size_t bytes)
{
	_sst_memcpy_fromio_32(dest, src, bytes);
}
EXPORT_SYMBOL_GPL(sst_memcpy_fromio_32);

/* Public API */
void sst_dsp_shim_write(struct sst_dsp *sst, u32 offset, u32 value)
{
	unsigned long flags;

	spin_lock_irqsave(&sst->spinlock, flags);
	sst->ops->write(sst->addr.shim, offset, value);
	spin_unlock_irqrestore(&sst->spinlock, flags);
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_write);

u32 sst_dsp_shim_read(struct sst_dsp *sst, u32 offset)
{
	unsigned long flags;
	u32 val;

	spin_lock_irqsave(&sst->spinlock, flags);
	val = sst->ops->read(sst->addr.shim, offset);
	spin_unlock_irqrestore(&sst->spinlock, flags);

	return val;
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_read);

void sst_dsp_shim_write64(struct sst_dsp *sst, u32 offset, u64 value)
{
	unsigned long flags;

	spin_lock_irqsave(&sst->spinlock, flags);
	sst->ops->write64(sst->addr.shim, offset, value);
	spin_unlock_irqrestore(&sst->spinlock, flags);
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_write64);

u64 sst_dsp_shim_read64(struct sst_dsp *sst, u32 offset)
{
	unsigned long flags;
	u64 val;

	spin_lock_irqsave(&sst->spinlock, flags);
	val = sst->ops->read64(sst->addr.shim, offset);
	spin_unlock_irqrestore(&sst->spinlock, flags);

	return val;
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_read64);

void sst_dsp_shim_write_unlocked(struct sst_dsp *sst, u32 offset, u32 value)
{
	sst->ops->write(sst->addr.shim, offset, value);
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_write_unlocked);

u32 sst_dsp_shim_read_unlocked(struct sst_dsp *sst, u32 offset)
{
	return sst->ops->read(sst->addr.shim, offset);
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_read_unlocked);

void sst_dsp_shim_write64_unlocked(struct sst_dsp *sst, u32 offset, u64 value)
{
	sst->ops->write64(sst->addr.shim, offset, value);
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_write64_unlocked);

u64 sst_dsp_shim_read64_unlocked(struct sst_dsp *sst, u32 offset)
{
	return sst->ops->read64(sst->addr.shim, offset);
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_read64_unlocked);

int sst_dsp_shim_update_bits_unlocked(struct sst_dsp *sst, u32 offset,
				u32 mask, u32 value)
{
	bool change;
	unsigned int old, new;
	u32 ret;

	ret = sst_dsp_shim_read_unlocked(sst, offset);

	old = ret;
	new = (old & (~mask)) | (value & mask);

	change = (old != new);
	if (change)
		sst_dsp_shim_write_unlocked(sst, offset, new);

	return change;
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits_unlocked);

int sst_dsp_shim_update_bits64_unlocked(struct sst_dsp *sst, u32 offset,
				u64 mask, u64 value)
{
	bool change;
	u64 old, new;

	old = sst_dsp_shim_read64_unlocked(sst, offset);

	new = (old & (~mask)) | (value & mask);

	change = (old != new);
	if (change)
		sst_dsp_shim_write64_unlocked(sst, offset, new);

	return change;
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64_unlocked);

int sst_dsp_shim_update_bits(struct sst_dsp *sst, u32 offset,
				u32 mask, u32 value)
{
	unsigned long flags;
	bool change;

	spin_lock_irqsave(&sst->spinlock, flags);
	change = sst_dsp_shim_update_bits_unlocked(sst, offset, mask, value);
	spin_unlock_irqrestore(&sst->spinlock, flags);
	return change;
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits);

int sst_dsp_shim_update_bits64(struct sst_dsp *sst, u32 offset,
				u64 mask, u64 value)
{
	unsigned long flags;
	bool change;

	spin_lock_irqsave(&sst->spinlock, flags);
	change = sst_dsp_shim_update_bits64_unlocked(sst, offset, mask, value);
	spin_unlock_irqrestore(&sst->spinlock, flags);
	return change;
}
EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64);

void sst_dsp_dump(struct sst_dsp *sst)
{
	if (sst->ops->dump)
		sst->ops->dump(sst);
}
EXPORT_SYMBOL_GPL(sst_dsp_dump);

void sst_dsp_reset(struct sst_dsp *sst)
{
	if (sst->ops->reset)
		sst->ops->reset(sst);
}
EXPORT_SYMBOL_GPL(sst_dsp_reset);

int sst_dsp_boot(struct sst_dsp *sst)
{
	if (sst->ops->boot)
		sst->ops->boot(sst);

	return 0;
}
EXPORT_SYMBOL_GPL(sst_dsp_boot);

void sst_dsp_ipc_msg_tx(struct sst_dsp *dsp, u32 msg)
{
	sst_dsp_shim_write_unlocked(dsp, SST_IPCX, msg | SST_IPCX_BUSY);
	trace_sst_ipc_msg_tx(msg);
}
EXPORT_SYMBOL_GPL(sst_dsp_ipc_msg_tx);

u32 sst_dsp_ipc_msg_rx(struct sst_dsp *dsp)
{
	u32 msg;

	msg = sst_dsp_shim_read_unlocked(dsp, SST_IPCX);
	trace_sst_ipc_msg_rx(msg);

	return msg;
}
EXPORT_SYMBOL_GPL(sst_dsp_ipc_msg_rx);

int sst_dsp_mailbox_init(struct sst_dsp *sst, u32 inbox_offset, size_t inbox_size,
	u32 outbox_offset, size_t outbox_size)
{
	sst->mailbox.in_base = sst->addr.lpe + inbox_offset;
	sst->mailbox.out_base = sst->addr.lpe + outbox_offset;
	sst->mailbox.in_size = inbox_size;
	sst->mailbox.out_size = outbox_size;
	return 0;
}
EXPORT_SYMBOL_GPL(sst_dsp_mailbox_init);

void sst_dsp_outbox_write(struct sst_dsp *sst, void *message, size_t bytes)
{
	u32 i;

	trace_sst_ipc_outbox_write(bytes);

	memcpy_toio(sst->mailbox.out_base, message, bytes);

	for (i = 0; i < bytes; i += 4)
		trace_sst_ipc_outbox_wdata(i, *(u32 *)(message + i));
}
EXPORT_SYMBOL_GPL(sst_dsp_outbox_write);

void sst_dsp_outbox_read(struct sst_dsp *sst, void *message, size_t bytes)
{
	u32 i;

	trace_sst_ipc_outbox_read(bytes);

	memcpy_fromio(message, sst->mailbox.out_base, bytes);

	for (i = 0; i < bytes; i += 4)
		trace_sst_ipc_outbox_rdata(i, *(u32 *)(message + i));
}
EXPORT_SYMBOL_GPL(sst_dsp_outbox_read);

void sst_dsp_inbox_write(struct sst_dsp *sst, void *message, size_t bytes)
{
	u32 i;

	trace_sst_ipc_inbox_write(bytes);

	memcpy_toio(sst->mailbox.in_base, message, bytes);

	for (i = 0; i < bytes; i += 4)
		trace_sst_ipc_inbox_wdata(i, *(u32 *)(message + i));
}
EXPORT_SYMBOL_GPL(sst_dsp_inbox_write);

void sst_dsp_inbox_read(struct sst_dsp *sst, void *message, size_t bytes)
{
	u32 i;

	trace_sst_ipc_inbox_read(bytes);

	memcpy_fromio(message, sst->mailbox.in_base, bytes);

	for (i = 0; i < bytes; i += 4)
		trace_sst_ipc_inbox_rdata(i, *(u32 *)(message + i));
}
EXPORT_SYMBOL_GPL(sst_dsp_inbox_read);

struct sst_dsp *sst_dsp_new(struct device *dev,
	struct sst_dsp_device *sst_dev, struct sst_pdata *pdata)
{
	struct sst_dsp *sst;
	int err;

	dev_dbg(dev, "initialising audio DSP id 0x%x\n", pdata->id);

	sst = devm_kzalloc(dev, sizeof(*sst), GFP_KERNEL);
	if (sst == NULL)
		return NULL;

	spin_lock_init(&sst->spinlock);
	mutex_init(&sst->mutex);
	sst->dev = dev;
	sst->dma_dev = pdata->dma_dev;
	sst->thread_context = sst_dev->thread_context;
	sst->sst_dev = sst_dev;
	sst->id = pdata->id;
	sst->irq = pdata->irq;
	sst->ops = sst_dev->ops;
	sst->pdata = pdata;
	INIT_LIST_HEAD(&sst->used_block_list);
	INIT_LIST_HEAD(&sst->free_block_list);
	INIT_LIST_HEAD(&sst->module_list);
	INIT_LIST_HEAD(&sst->fw_list);

	/* Initialise SST Audio DSP */
	if (sst->ops->init) {
		err = sst->ops->init(sst, pdata);
		if (err < 0)
			return NULL;
	}

	/* Register the ISR */
	err = request_threaded_irq(sst->irq, sst->ops->irq_handler,
		sst_dev->thread, IRQF_SHARED, "AudioDSP", sst);
	if (err)
		goto irq_err;

	return sst;

irq_err:
	if (sst->ops->free)
		sst->ops->free(sst);

	return NULL;
}
EXPORT_SYMBOL_GPL(sst_dsp_new);

void sst_dsp_free(struct sst_dsp *sst)
{
	free_irq(sst->irq, sst);
	if (sst->ops->free)
		sst->ops->free(sst);
}
EXPORT_SYMBOL_GPL(sst_dsp_free);

/* Module information */
MODULE_AUTHOR("Liam Girdwood");
MODULE_DESCRIPTION("Intel SST Core");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
a4b12990 MB	1	/*
	2	* Intel Smart Sound Technology (SST) DSP Core Driver
	3	*
	4	* Copyright (C) 2013, Intel Corporation. All rights reserved.
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU General Public License version
	8	* 2 as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	*/
	16
	17	#include <linux/slab.h>
	18	#include <linux/export.h>
	19	#include <linux/interrupt.h>
	20	#include <linux/module.h>
	21	#include <linux/platform_device.h>
	22	#include <linux/io.h>
	23
	24	#include "sst-dsp.h"
	25	#include "sst-dsp-priv.h"
	26
	27	#define CREATE_TRACE_POINTS
	28	#include <trace/events/intel-sst.h>
	29
	30	/* Internal generic low-level SST IO functions - can be overidden */
	31	void sst_shim32_write(void __iomem *addr, u32 offset, u32 value)
	32	{
	33	writel(value, addr + offset);
	34	}
	35	EXPORT_SYMBOL_GPL(sst_shim32_write);
	36
	37	u32 sst_shim32_read(void __iomem *addr, u32 offset)
	38	{
	39	return readl(addr + offset);
	40	}
	41	EXPORT_SYMBOL_GPL(sst_shim32_read);
	42
	43	void sst_shim32_write64(void __iomem *addr, u32 offset, u64 value)
	44	{
	45	memcpy_toio(addr + offset, &value, sizeof(value));
	46	}
	47	EXPORT_SYMBOL_GPL(sst_shim32_write64);
	48
	49	u64 sst_shim32_read64(void __iomem *addr, u32 offset)
	50	{
	51	u64 val;
	52
	53	memcpy_fromio(&val, addr + offset, sizeof(val));
	54	return val;
	55	}
	56	EXPORT_SYMBOL_GPL(sst_shim32_read64);
	57
	58	static inline void _sst_memcpy_toio_32(volatile u32 __iomem *dest,
	59	u32 *src, size_t bytes)
	60	{
	61	int i, words = bytes >> 2;
	62
	63	for (i = 0; i < words; i++)
	64	writel(src[i], dest + i);
65	}
66
67	static inline void _sst_memcpy_fromio_32(u32 *dest,
68	const volatile __iomem u32 *src, size_t bytes)
69	{
70	int i, words = bytes >> 2;
71
72	for (i = 0; i < words; i++)
73	dest[i] = readl(src + i);
74	}
75
76	void sst_memcpy_toio_32(struct sst_dsp *sst,
77	void __iomem dest, void src, size_t bytes)
78	{
79	_sst_memcpy_toio_32(dest, src, bytes);
80	}
81	EXPORT_SYMBOL_GPL(sst_memcpy_toio_32);
82
83	void sst_memcpy_fromio_32(struct sst_dsp sst, void dest,
84	void __iomem *src, size_t bytes)
85	{
86	_sst_memcpy_fromio_32(dest, src, bytes);
87	}
88	EXPORT_SYMBOL_GPL(sst_memcpy_fromio_32);
89
90	/* Public API */
91	void sst_dsp_shim_write(struct sst_dsp *sst, u32 offset, u32 value)
92	{
93	unsigned long flags;
94
95	spin_lock_irqsave(&sst->spinlock, flags);
96	sst->ops->write(sst->addr.shim, offset, value);
97	spin_unlock_irqrestore(&sst->spinlock, flags);
98	}
99	EXPORT_SYMBOL_GPL(sst_dsp_shim_write);
100
101	u32 sst_dsp_shim_read(struct sst_dsp *sst, u32 offset)
102	{
103	unsigned long flags;
104	u32 val;
105
106	spin_lock_irqsave(&sst->spinlock, flags);
107	val = sst->ops->read(sst->addr.shim, offset);
108	spin_unlock_irqrestore(&sst->spinlock, flags);
109
110	return val;
111	}
112	EXPORT_SYMBOL_GPL(sst_dsp_shim_read);
113
114	void sst_dsp_shim_write64(struct sst_dsp *sst, u32 offset, u64 value)
115	{
116	unsigned long flags;
117
118	spin_lock_irqsave(&sst->spinlock, flags);
119	sst->ops->write64(sst->addr.shim, offset, value);
120	spin_unlock_irqrestore(&sst->spinlock, flags);
121	}
122	EXPORT_SYMBOL_GPL(sst_dsp_shim_write64);
123
124	u64 sst_dsp_shim_read64(struct sst_dsp *sst, u32 offset)
125	{
126	unsigned long flags;
127	u64 val;
128
129	spin_lock_irqsave(&sst->spinlock, flags);
130	val = sst->ops->read64(sst->addr.shim, offset);
131	spin_unlock_irqrestore(&sst->spinlock, flags);
132
133	return val;
134	}
135	EXPORT_SYMBOL_GPL(sst_dsp_shim_read64);
136
137	void sst_dsp_shim_write_unlocked(struct sst_dsp *sst, u32 offset, u32 value)
138	{
139	sst->ops->write(sst->addr.shim, offset, value);
140	}
141	EXPORT_SYMBOL_GPL(sst_dsp_shim_write_unlocked);
142
143	u32 sst_dsp_shim_read_unlocked(struct sst_dsp *sst, u32 offset)
144	{
145	return sst->ops->read(sst->addr.shim, offset);
146	}
147	EXPORT_SYMBOL_GPL(sst_dsp_shim_read_unlocked);
148
149	void sst_dsp_shim_write64_unlocked(struct sst_dsp *sst, u32 offset, u64 value)
150	{
151	sst->ops->write64(sst->addr.shim, offset, value);
152	}
153	EXPORT_SYMBOL_GPL(sst_dsp_shim_write64_unlocked);
154
155	u64 sst_dsp_shim_read64_unlocked(struct sst_dsp *sst, u32 offset)
156	{
157	return sst->ops->read64(sst->addr.shim, offset);
158	}
159	EXPORT_SYMBOL_GPL(sst_dsp_shim_read64_unlocked);
160
161	int sst_dsp_shim_update_bits_unlocked(struct sst_dsp *sst, u32 offset,
162	u32 mask, u32 value)
163	{
164	bool change;
165	unsigned int old, new;
166	u32 ret;
167
168	ret = sst_dsp_shim_read_unlocked(sst, offset);
169
170	old = ret;
171	new = (old & (~mask)) \| (value & mask);
172
173	change = (old != new);
174	if (change)
175	sst_dsp_shim_write_unlocked(sst, offset, new);
176
177	return change;
178	}
179	EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits_unlocked);
180
181	int sst_dsp_shim_update_bits64_unlocked(struct sst_dsp *sst, u32 offset,
182	u64 mask, u64 value)
183	{
184	bool change;
185	u64 old, new;
186
187	old = sst_dsp_shim_read64_unlocked(sst, offset);
188
189	new = (old & (~mask)) \| (value & mask);
190
191	change = (old != new);
192	if (change)
193	sst_dsp_shim_write64_unlocked(sst, offset, new);
194
195	return change;
196	}
197	EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64_unlocked);
198
199	int sst_dsp_shim_update_bits(struct sst_dsp *sst, u32 offset,
200	u32 mask, u32 value)
201	{
202	unsigned long flags;
203	bool change;
204
205	spin_lock_irqsave(&sst->spinlock, flags);
206	change = sst_dsp_shim_update_bits_unlocked(sst, offset, mask, value);
207	spin_unlock_irqrestore(&sst->spinlock, flags);
208	return change;
209	}
210	EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits);
211
212	int sst_dsp_shim_update_bits64(struct sst_dsp *sst, u32 offset,
213	u64 mask, u64 value)
214	{
215	unsigned long flags;
216	bool change;
217
218	spin_lock_irqsave(&sst->spinlock, flags);
219	change = sst_dsp_shim_update_bits64_unlocked(sst, offset, mask, value);
220	spin_unlock_irqrestore(&sst->spinlock, flags);
221	return change;
222	}
223	EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64);
224
225	void sst_dsp_dump(struct sst_dsp *sst)
226	{
30bba67c LG	227	if (sst->ops->dump)
30bba67c LG	228	sst->ops->dump(sst);
a4b12990 MB	229	}
	230	EXPORT_SYMBOL_GPL(sst_dsp_dump);
	231
	232	void sst_dsp_reset(struct sst_dsp *sst)
	233	{
30bba67c LG	234	if (sst->ops->reset)
30bba67c LG	235	sst->ops->reset(sst);
a4b12990 MB	236	}
	237	EXPORT_SYMBOL_GPL(sst_dsp_reset);
	238
	239	int sst_dsp_boot(struct sst_dsp *sst)
	240	{
30bba67c LG	241	if (sst->ops->boot)
	242	sst->ops->boot(sst);
	243
a4b12990 MB	244	return 0;
	245	}
	246	EXPORT_SYMBOL_GPL(sst_dsp_boot);
	247
	248	void sst_dsp_ipc_msg_tx(struct sst_dsp *dsp, u32 msg)
	249	{
	250	sst_dsp_shim_write_unlocked(dsp, SST_IPCX, msg \| SST_IPCX_BUSY);
	251	trace_sst_ipc_msg_tx(msg);
	252	}
	253	EXPORT_SYMBOL_GPL(sst_dsp_ipc_msg_tx);
	254
	255	u32 sst_dsp_ipc_msg_rx(struct sst_dsp *dsp)
	256	{
	257	u32 msg;
	258
	259	msg = sst_dsp_shim_read_unlocked(dsp, SST_IPCX);
	260	trace_sst_ipc_msg_rx(msg);
	261
	262	return msg;
	263	}
	264	EXPORT_SYMBOL_GPL(sst_dsp_ipc_msg_rx);
	265
	266	int sst_dsp_mailbox_init(struct sst_dsp *sst, u32 inbox_offset, size_t inbox_size,
	267	u32 outbox_offset, size_t outbox_size)
	268	{
	269	sst->mailbox.in_base = sst->addr.lpe + inbox_offset;
	270	sst->mailbox.out_base = sst->addr.lpe + outbox_offset;
	271	sst->mailbox.in_size = inbox_size;
	272	sst->mailbox.out_size = outbox_size;
	273	return 0;
	274	}
	275	EXPORT_SYMBOL_GPL(sst_dsp_mailbox_init);
	276
	277	void sst_dsp_outbox_write(struct sst_dsp sst, void message, size_t bytes)
	278	{
	279	u32 i;
	280
	281	trace_sst_ipc_outbox_write(bytes);
	282
	283	memcpy_toio(sst->mailbox.out_base, message, bytes);
	284
	285	for (i = 0; i < bytes; i += 4)
	286	trace_sst_ipc_outbox_wdata(i, (u32 )(message + i));
	287	}
	288	EXPORT_SYMBOL_GPL(sst_dsp_outbox_write);
	289
	290	void sst_dsp_outbox_read(struct sst_dsp sst, void message, size_t bytes)
	291	{
	292	u32 i;
	293
	294	trace_sst_ipc_outbox_read(bytes);
	295
	296	memcpy_fromio(message, sst->mailbox.out_base, bytes);
	297
	298	for (i = 0; i < bytes; i += 4)
	299	trace_sst_ipc_outbox_rdata(i, (u32 )(message + i));
	300	}
	301	EXPORT_SYMBOL_GPL(sst_dsp_outbox_read);
	302
	303	void sst_dsp_inbox_write(struct sst_dsp sst, void message, size_t bytes)
	304	{
	305	u32 i;
	306
	307	trace_sst_ipc_inbox_write(bytes);
308
309	memcpy_toio(sst->mailbox.in_base, message, bytes);
310
311	for (i = 0; i < bytes; i += 4)
312	trace_sst_ipc_inbox_wdata(i, (u32 )(message + i));
313	}
314	EXPORT_SYMBOL_GPL(sst_dsp_inbox_write);
315
316	void sst_dsp_inbox_read(struct sst_dsp sst, void message, size_t bytes)
317	{
318	u32 i;
319
320	trace_sst_ipc_inbox_read(bytes);
321
322	memcpy_fromio(message, sst->mailbox.in_base, bytes);
323
324	for (i = 0; i < bytes; i += 4)
325	trace_sst_ipc_inbox_rdata(i, (u32 )(message + i));
326	}
327	EXPORT_SYMBOL_GPL(sst_dsp_inbox_read);
328
329	struct sst_dsp sst_dsp_new(struct device dev,
330	struct sst_dsp_device sst_dev, struct sst_pdata pdata)
331	{
332	struct sst_dsp *sst;
333	int err;
334
335	dev_dbg(dev, "initialising audio DSP id 0x%x\n", pdata->id);
336
337	sst = devm_kzalloc(dev, sizeof(*sst), GFP_KERNEL);
338	if (sst == NULL)
339	return NULL;
340
341	spin_lock_init(&sst->spinlock);
342	mutex_init(&sst->mutex);
343	sst->dev = dev;
10df3509	344	sst->dma_dev = pdata->dma_dev;
a4b12990 MB	345	sst->thread_context = sst_dev->thread_context;
	346	sst->sst_dev = sst_dev;
	347	sst->id = pdata->id;
	348	sst->irq = pdata->irq;
	349	sst->ops = sst_dev->ops;
	350	sst->pdata = pdata;
	351	INIT_LIST_HEAD(&sst->used_block_list);
	352	INIT_LIST_HEAD(&sst->free_block_list);
	353	INIT_LIST_HEAD(&sst->module_list);
	354	INIT_LIST_HEAD(&sst->fw_list);
	355
	356	/* Initialise SST Audio DSP */
	357	if (sst->ops->init) {
	358	err = sst->ops->init(sst, pdata);
	359	if (err < 0)
	360	return NULL;
	361	}
	362
	363	/* Register the ISR */
	364	err = request_threaded_irq(sst->irq, sst->ops->irq_handler,
	365	sst_dev->thread, IRQF_SHARED, "AudioDSP", sst);
	366	if (err)
	367	goto irq_err;
	368
	369	return sst;
	370
	371	irq_err:
	372	if (sst->ops->free)
	373	sst->ops->free(sst);
	374
	375	return NULL;
	376	}
	377	EXPORT_SYMBOL_GPL(sst_dsp_new);
	378
	379	void sst_dsp_free(struct sst_dsp *sst)
	380	{
	381	free_irq(sst->irq, sst);
	382	if (sst->ops->free)
	383	sst->ops->free(sst);
	384	}
	385	EXPORT_SYMBOL_GPL(sst_dsp_free);
	386
	387	/* Module information */
	388	MODULE_AUTHOR("Liam Girdwood");
	389	MODULE_DESCRIPTION("Intel SST Core");
	390	MODULE_LICENSE("GPL v2");