/**
 * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
 *
 * This source file is released under GPL v2 license (no other versions).
 * See the COPYING file included in the main directory of this source
 * distribution for the license terms and conditions.
 *
 * @File    ctvmem.h
 *
 * @Brief
 * This file contains the definition of virtual memory management object
 * for card device.
 *
 * @Author Liu Chun
 * @Date Mar 28 2008
 */

#ifndef CTVMEM_H
#define CTVMEM_H

#define CT_PTP_NUM	4	/* num of device page table pages */

#include <linux/mutex.h>
#include <linux/list.h>
#include <linux/pci.h>
#include <sound/memalloc.h>

/* The chip can handle the page table of 4k pages
 * (emu20k1 can handle even 8k pages, but we don't use it right now)
 */
#define CT_PAGE_SIZE	4096
#define CT_PAGE_SHIFT	12
#define CT_PAGE_MASK	(~(PAGE_SIZE - 1))
#define CT_PAGE_ALIGN(addr)	ALIGN(addr, CT_PAGE_SIZE)

struct ct_vm_block {
	unsigned int addr;	/* starting logical addr of this block */
	unsigned int size;	/* size of this device virtual mem block */
	struct list_head list;
};

struct snd_pcm_substream;

/* Virtual memory management object for card device */
struct ct_vm {
	struct snd_dma_buffer ptp[CT_PTP_NUM];	/* Device page table pages */
	unsigned int size;		/* Available addr space in bytes */
	struct list_head unused;	/* List of unused blocks */
	struct list_head used;		/* List of used blocks */
	struct mutex lock;

	/* Map host addr (kmalloced/vmalloced) to device logical addr. */
	struct ct_vm_block *(*map)(struct ct_vm *, struct snd_pcm_substream *,
				   int size);
	/* Unmap device logical addr area. */
	void (*unmap)(struct ct_vm *, struct ct_vm_block *block);
	dma_addr_t (*get_ptp_phys)(struct ct_vm *vm, int index);
};

int ct_vm_create(struct ct_vm **rvm, struct pci_dev *pci);
void ct_vm_destroy(struct ct_vm *vm);

#endif /* CTVMEM_H */
dc1de80120cf9ccd478ac57c3a3a0764b'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/sound/oss/dmasound/dmasound.h?id=23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/sound/oss/dmasound/dmasound.h?id=23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/sound/oss/dmasound/dmasound.h'>
<input type='hidden' name='id' value='23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound?id=23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/oss?id=23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b'>oss</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/oss/dmasound?id=23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b'>dmasound</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/oss/dmasound/dmasound.h?id=23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b'>dmasound.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-08 09:56:15 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-08 09:56:15 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/oss/dmasound/dmasound.h?id=23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b'>23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/oss/dmasound/dmasound.h?id=23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b'>4aff32d5f2f6fe2f54028bfd4d1b66fdd2f8d281</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/oss/dmasound/dmasound.h?id=23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b'>sound/oss/dmasound/dmasound.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/oss/dmasound/dmasound.h?id=926af6273fc683cd98cd0ce7bf0d04a02eed6742'>926af6273fc683cd98cd0ce7bf0d04a02eed6742</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/oss/dmasound/dmasound.h?id=23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b&amp;id2=926af6273fc683cd98cd0ce7bf0d04a02eed6742'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/oss/dmasound/dmasound.h?id=eeeefd41843218c55a8782a6920f044d9bf6207a'>eeeefd41843218c55a8782a6920f044d9bf6207a</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/oss/dmasound/dmasound.h?id=23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b&amp;id2=eeeefd41843218c55a8782a6920f044d9bf6207a'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'for-linus' of git://git.kernel.dk/linux-block</div><div class='commit-msg'>Pull block fix from Jens Axboe:
 "A single fix that should go into 4.10, fixing a regression on some
  devices with the WRITE_SAME command"

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: don't try Write Same from __blkdev_issue_zeroout
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b'>Diffstat</a> (limited to 'sound/oss/dmasound/dmasound.h')</div><table summary='diffstat' class='diffstat'>