^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Takashi Iwai <tiwai@suse.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Generic memory allocators
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #ifndef __SOUND_MEMALLOC_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #define __SOUND_MEMALLOC_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/page.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) struct device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * buffer device info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) struct snd_dma_device {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) int type; /* SNDRV_DMA_TYPE_XXX */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) struct device *dev; /* generic device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define snd_dma_continuous_data(x) ((struct device *)(__force unsigned long)(x))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * buffer types
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define SNDRV_DMA_TYPE_UNKNOWN 0 /* not defined */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define SNDRV_DMA_TYPE_CONTINUOUS 1 /* continuous no-DMA memory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define SNDRV_DMA_TYPE_DEV 2 /* generic device continuous */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define SNDRV_DMA_TYPE_DEV_UC 5 /* continuous non-cahced */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #ifdef CONFIG_SND_DMA_SGBUF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define SNDRV_DMA_TYPE_DEV_SG 3 /* generic device SG-buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define SNDRV_DMA_TYPE_DEV_UC_SG 6 /* SG non-cached */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define SNDRV_DMA_TYPE_DEV_SG SNDRV_DMA_TYPE_DEV /* no SG-buf support */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define SNDRV_DMA_TYPE_DEV_UC_SG SNDRV_DMA_TYPE_DEV_UC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #ifdef CONFIG_GENERIC_ALLOCATOR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define SNDRV_DMA_TYPE_DEV_IRAM 4 /* generic device iram-buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define SNDRV_DMA_TYPE_DEV_IRAM SNDRV_DMA_TYPE_DEV
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define SNDRV_DMA_TYPE_VMALLOC 7 /* vmalloc'ed buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * info for buffer allocation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct snd_dma_buffer {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct snd_dma_device dev; /* device type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) unsigned char *area; /* virtual pointer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) dma_addr_t addr; /* physical address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) size_t bytes; /* buffer size in bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) void *private_data; /* private for allocator; don't touch */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * return the pages matching with the given byte size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static inline unsigned int snd_sgbuf_aligned_pages(size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) return (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #ifdef CONFIG_SND_DMA_SGBUF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * Scatter-Gather generic device pages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) void *snd_malloc_sgbuf_pages(struct device *device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) size_t size, struct snd_dma_buffer *dmab,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) size_t *res_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) int snd_free_sgbuf_pages(struct snd_dma_buffer *dmab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) struct snd_sg_page {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) void *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) dma_addr_t addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) struct snd_sg_buf {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) int size; /* allocated byte size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) int pages; /* allocated pages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) int tblsize; /* allocated table size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) struct snd_sg_page *table; /* address table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct page **page_table; /* page table (for vmap/vunmap) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * return the physical address at the corresponding offset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static inline dma_addr_t snd_sgbuf_get_addr(struct snd_dma_buffer *dmab,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) size_t offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct snd_sg_buf *sgbuf = dmab->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) dma_addr_t addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) if (!sgbuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) return dmab->addr + offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) addr = sgbuf->table[offset >> PAGE_SHIFT].addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) addr &= ~((dma_addr_t)PAGE_SIZE - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) return addr + offset % PAGE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * return the virtual address at the corresponding offset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static inline void *snd_sgbuf_get_ptr(struct snd_dma_buffer *dmab,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) size_t offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) struct snd_sg_buf *sgbuf = dmab->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) if (!sgbuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) return dmab->area + offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) return sgbuf->table[offset >> PAGE_SHIFT].buf + offset % PAGE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) unsigned int snd_sgbuf_get_chunk_size(struct snd_dma_buffer *dmab,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) unsigned int ofs, unsigned int size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) /* non-SG versions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static inline dma_addr_t snd_sgbuf_get_addr(struct snd_dma_buffer *dmab,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) size_t offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return dmab->addr + offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static inline void *snd_sgbuf_get_ptr(struct snd_dma_buffer *dmab,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) size_t offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) return dmab->area + offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) #define snd_sgbuf_get_chunk_size(dmab, ofs, size) (size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) #endif /* CONFIG_SND_DMA_SGBUF */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) /* allocate/release a buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) int snd_dma_alloc_pages(int type, struct device *dev, size_t size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) struct snd_dma_buffer *dmab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) int snd_dma_alloc_pages_fallback(int type, struct device *dev, size_t size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct snd_dma_buffer *dmab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) void snd_dma_free_pages(struct snd_dma_buffer *dmab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) #endif /* __SOUND_MEMALLOC_H */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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