/**
 * 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 */
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<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-29 10:56:56 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-29 10:56:56 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/kcmp?h=nds-private-remove&amp;id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>2c5d9555d6d937966d79d4c6529a5f7b9206e405</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/testing/selftests/kcmp?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>patch</a>)</td></tr>
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<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/kcmp?h=nds-private-remove&amp;id=53cd1ad1a68fd10f677445e04ed63aa9ce39b36b'>53cd1ad1a68fd10f677445e04ed63aa9ce39b36b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/kcmp?h=nds-private-remove&amp;id=2c5d9555d6d937966d79d4c6529a5f7b9206e405&amp;id2=53cd1ad1a68fd10f677445e04ed63aa9ce39b36b'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests/kcmp?h=nds-private-remove&amp;id=2ad5d52d42810bed95100a3d912679d8864421ec'>2ad5d52d42810bed95100a3d912679d8864421ec</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/testing/selftests/kcmp?h=nds-private-remove&amp;id=2c5d9555d6d937966d79d4c6529a5f7b9206e405&amp;id2=2ad5d52d42810bed95100a3d912679d8864421ec'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'parisc-4.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux</div><div class='commit-msg'>Pull two parisc fixes from Helge Deller:
 "One fix to avoid usage of BITS_PER_LONG in user-space exported swab.h
  header which breaks compiling qemu, and one trivial fix for printk
  continuation in the parisc parport driver"

* 'parisc-4.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Don't use BITS_PER_LONG in userspace-exported swab.h header
  parisc, parport_gsc: Fixes for printk continuation lines
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>Diffstat</a> (limited to 'tools/testing/selftests/kcmp')</div><table summary='diffstat' class='diffstat'>