/** * 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 */ '>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/sound/atmel?id=b66a8043d0baa9818a407ed857eada5cb21cd9bb'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/sound/atmel'> <input type='hidden' name='id' value='b66a8043d0baa9818a407ed857eada5cb21cd9bb'/><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/log/?id=b66a8043d0baa9818a407ed857eada5cb21cd9bb'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound?id=b66a8043d0baa9818a407ed857eada5cb21cd9bb'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound/atmel?id=b66a8043d0baa9818a407ed857eada5cb21cd9bb'>atmel</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/sound/atmel?id=b66a8043d0baa9818a407ed857eada5cb21cd9bb&showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>