From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- sound/pci/ctxfi/ctvmem.h | 60 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 sound/pci/ctxfi/ctvmem.h (limited to 'sound/pci/ctxfi/ctvmem.h') diff --git a/sound/pci/ctxfi/ctvmem.h b/sound/pci/ctxfi/ctvmem.h new file mode 100644 index 0000000000..da54cbcdb0 --- /dev/null +++ b/sound/pci/ctxfi/ctvmem.h @@ -0,0 +1,60 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved. + * + * @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 v1.2.3