diff options
Diffstat (limited to 'include/sound/memalloc.h')
| -rw-r--r-- | include/sound/memalloc.h | 151 |
1 files changed, 56 insertions, 95 deletions
diff --git a/include/sound/memalloc.h b/include/sound/memalloc.h index cf15b8213df7..9dd475cf4e8c 100644 --- a/include/sound/memalloc.h +++ b/include/sound/memalloc.h @@ -1,56 +1,52 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright (c) by Jaroslav Kysela <perex@perex.cz> * Takashi Iwai <tiwai@suse.de> * * Generic memory allocators - * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * */ #ifndef __SOUND_MEMALLOC_H #define __SOUND_MEMALLOC_H +#include <linux/dma-direction.h> +#include <asm/page.h> + struct device; +struct vm_area_struct; +struct sg_table; /* * buffer device info */ struct snd_dma_device { int type; /* SNDRV_DMA_TYPE_XXX */ + enum dma_data_direction dir; /* DMA direction */ + bool need_sync; /* explicit sync needed? */ struct device *dev; /* generic device */ }; -#ifndef snd_dma_pci_data -#define snd_dma_pci_data(pci) (&(pci)->dev) -#define snd_dma_isa_data() NULL -#define snd_dma_continuous_data(x) ((struct device *)(__force unsigned long)(x)) -#endif - - /* * buffer types */ #define SNDRV_DMA_TYPE_UNKNOWN 0 /* not defined */ #define SNDRV_DMA_TYPE_CONTINUOUS 1 /* continuous no-DMA memory */ #define SNDRV_DMA_TYPE_DEV 2 /* generic device continuous */ +#define SNDRV_DMA_TYPE_DEV_WC 5 /* continuous write-combined */ +#ifdef CONFIG_GENERIC_ALLOCATOR +#define SNDRV_DMA_TYPE_DEV_IRAM 4 /* generic device iram-buffer */ +#else +#define SNDRV_DMA_TYPE_DEV_IRAM SNDRV_DMA_TYPE_DEV +#endif +#define SNDRV_DMA_TYPE_VMALLOC 7 /* vmalloc'ed buffer */ +#define SNDRV_DMA_TYPE_NONCONTIG 8 /* non-coherent SG buffer */ +#define SNDRV_DMA_TYPE_NONCOHERENT 9 /* non-coherent buffer */ #ifdef CONFIG_SND_DMA_SGBUF -#define SNDRV_DMA_TYPE_DEV_SG 3 /* generic device SG-buffer */ +#define SNDRV_DMA_TYPE_DEV_SG 3 /* S/G pages */ +#define SNDRV_DMA_TYPE_DEV_WC_SG 6 /* SG write-combined */ #else #define SNDRV_DMA_TYPE_DEV_SG SNDRV_DMA_TYPE_DEV /* no SG-buf support */ +#define SNDRV_DMA_TYPE_DEV_WC_SG SNDRV_DMA_TYPE_DEV_WC #endif /* @@ -64,29 +60,6 @@ struct snd_dma_buffer { void *private_data; /* private for allocator; don't touch */ }; -#ifdef CONFIG_SND_DMA_SGBUF -/* - * Scatter-Gather generic device pages - */ -void *snd_malloc_sgbuf_pages(struct device *device, - size_t size, struct snd_dma_buffer *dmab, - size_t *res_size); -int snd_free_sgbuf_pages(struct snd_dma_buffer *dmab); - -struct snd_sg_page { - void *buf; - dma_addr_t addr; -}; - -struct snd_sg_buf { - int size; /* allocated byte size */ - int pages; /* allocated pages */ - int tblsize; /* allocated table size */ - struct snd_sg_page *table; /* address table */ - struct page **page_table; /* page table (for vmap/vunmap) */ - struct device *dev; -}; - /* * return the pages matching with the given byte size */ @@ -95,65 +68,53 @@ static inline unsigned int snd_sgbuf_aligned_pages(size_t size) return (size + PAGE_SIZE - 1) >> PAGE_SHIFT; } -/* - * return the physical address at the corresponding offset - */ -static inline dma_addr_t snd_sgbuf_get_addr(struct snd_dma_buffer *dmab, - size_t offset) -{ - struct snd_sg_buf *sgbuf = dmab->private_data; - dma_addr_t addr = sgbuf->table[offset >> PAGE_SHIFT].addr; - addr &= PAGE_MASK; - return addr + offset % PAGE_SIZE; -} - -/* - * return the virtual address at the corresponding offset - */ -static inline void *snd_sgbuf_get_ptr(struct snd_dma_buffer *dmab, - size_t offset) -{ - struct snd_sg_buf *sgbuf = dmab->private_data; - return sgbuf->table[offset >> PAGE_SHIFT].buf + offset % PAGE_SIZE; -} - -unsigned int snd_sgbuf_get_chunk_size(struct snd_dma_buffer *dmab, - unsigned int ofs, unsigned int size); -#else -/* non-SG versions */ -static inline dma_addr_t snd_sgbuf_get_addr(struct snd_dma_buffer *dmab, - size_t offset) -{ - return dmab->addr + offset; -} +/* allocate/release a buffer */ +int snd_dma_alloc_dir_pages(int type, struct device *dev, + enum dma_data_direction dir, size_t size, + struct snd_dma_buffer *dmab); -static inline void *snd_sgbuf_get_ptr(struct snd_dma_buffer *dmab, - size_t offset) +static inline int snd_dma_alloc_pages(int type, struct device *dev, + size_t size, struct snd_dma_buffer *dmab) { - return dmab->area + offset; + return snd_dma_alloc_dir_pages(type, dev, DMA_BIDIRECTIONAL, size, dmab); } -#define snd_sgbuf_get_chunk_size(dmab, ofs, size) (size) - -#endif /* CONFIG_SND_DMA_SGBUF */ - -/* allocate/release a buffer */ -int snd_dma_alloc_pages(int type, struct device *dev, size_t size, - struct snd_dma_buffer *dmab); int snd_dma_alloc_pages_fallback(int type, struct device *dev, size_t size, struct snd_dma_buffer *dmab); void snd_dma_free_pages(struct snd_dma_buffer *dmab); +int snd_dma_buffer_mmap(struct snd_dma_buffer *dmab, + struct vm_area_struct *area); -/* buffer-preservation managements */ +enum snd_dma_sync_mode { SNDRV_DMA_SYNC_CPU, SNDRV_DMA_SYNC_DEVICE }; +#ifdef CONFIG_HAS_DMA +void snd_dma_buffer_sync(struct snd_dma_buffer *dmab, + enum snd_dma_sync_mode mode); +#else +static inline void snd_dma_buffer_sync(struct snd_dma_buffer *dmab, + enum snd_dma_sync_mode mode) {} +#endif + +dma_addr_t snd_sgbuf_get_addr(struct snd_dma_buffer *dmab, size_t offset); +struct page *snd_sgbuf_get_page(struct snd_dma_buffer *dmab, size_t offset); +unsigned int snd_sgbuf_get_chunk_size(struct snd_dma_buffer *dmab, + unsigned int ofs, unsigned int size); -#define snd_dma_pci_buf_id(pci) (((unsigned int)(pci)->vendor << 16) | (pci)->device) +/* device-managed memory allocator */ +struct snd_dma_buffer *snd_devm_alloc_dir_pages(struct device *dev, int type, + enum dma_data_direction dir, + size_t size); -size_t snd_dma_get_reserved_buf(struct snd_dma_buffer *dmab, unsigned int id); -int snd_dma_reserve_buf(struct snd_dma_buffer *dmab, unsigned int id); +static inline struct snd_dma_buffer * +snd_devm_alloc_pages(struct device *dev, int type, size_t size) +{ + return snd_devm_alloc_dir_pages(dev, type, DMA_BIDIRECTIONAL, size); +} -/* basic memory allocation functions */ -void *snd_malloc_pages(size_t size, gfp_t gfp_flags); -void snd_free_pages(void *ptr, size_t size); +static inline struct sg_table * +snd_dma_noncontig_sg_table(struct snd_dma_buffer *dmab) +{ + return dmab->private_data; +} #endif /* __SOUND_MEMALLOC_H */ |