From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/sound/pci/ctxfi/ctvmem.h | 63 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 kernel/sound/pci/ctxfi/ctvmem.h (limited to 'kernel/sound/pci/ctxfi/ctvmem.h') diff --git a/kernel/sound/pci/ctxfi/ctvmem.h b/kernel/sound/pci/ctxfi/ctvmem.h new file mode 100644 index 000000000..e6da60eb1 --- /dev/null +++ b/kernel/sound/pci/ctxfi/ctvmem.h @@ -0,0 +1,63 @@ +/** + * 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 +#include +#include +#include + +/* 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 */ -- cgit 1.2.3-korg