59c25048cd
Add QDF APIs for DMA buffer allocation and sharing with SMMU Stage 1 translation support. When SMMU Stage 1 is enabled, DMA APIs return IO virtual address(IOVA) instead of physical address. This IOVA needs to be mapped to physical address by external module before accessing these buffers. Change-Id: I88e938d8ebe1f32fdea79e3c3aa8a3638ddfd2b8 CRS-Fixed: 2072953
660 行
18 KiB
C
660 行
18 KiB
C
/*
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* Copyright (c) 2014-2018 The Linux Foundation. All rights reserved.
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*
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* Previously licensed under the ISC license by Qualcomm Atheros, Inc.
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*
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*
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* Permission to use, copy, modify, and/or distribute this software for
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* any purpose with or without fee is hereby granted, provided that the
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* above copyright notice and this permission notice appear in all
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* copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* This file was originally distributed by Qualcomm Atheros, Inc.
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* under proprietary terms before Copyright ownership was assigned
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* to the Linux Foundation.
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*/
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/**
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* DOC: qdf_mem
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* QCA driver framework (QDF) memory management APIs
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*/
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#if !defined(__QDF_MEMORY_H)
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#define __QDF_MEMORY_H
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/* Include Files */
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#include <qdf_types.h>
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#include <i_qdf_mem.h>
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#define QDF_CACHE_LINE_SZ __qdf_cache_line_sz
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/**
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* qdf_align() - align to the given size.
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* @a: input that needs to be aligned.
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* @align_size: boundary on which 'a' has to be alinged.
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*
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* Return: aligned value.
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*/
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#define qdf_align(a, align_size) __qdf_align(a, align_size)
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/**
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* struct qdf_mem_dma_page_t - Allocated dmaable page
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* @page_v_addr_start: Page start virtual address
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* @page_v_addr_end: Page end virtual address
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* @page_p_addr: Page start physical address
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*/
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struct qdf_mem_dma_page_t {
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char *page_v_addr_start;
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char *page_v_addr_end;
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qdf_dma_addr_t page_p_addr;
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};
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/**
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* struct qdf_mem_multi_page_t - multiple page allocation information storage
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* @num_element_per_page: Number of element in single page
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* @num_pages: Number of allocation needed pages
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* @dma_pages: page information storage in case of coherent memory
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* @cacheable_pages: page information storage in case of cacheable memory
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*/
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struct qdf_mem_multi_page_t {
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uint16_t num_element_per_page;
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uint16_t num_pages;
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struct qdf_mem_dma_page_t *dma_pages;
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void **cacheable_pages;
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};
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/* Preprocessor definitions and constants */
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typedef __qdf_mempool_t qdf_mempool_t;
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/**
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* qdf_mem_init() - Initialize QDF memory module
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*
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* Return: None
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*
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*/
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void qdf_mem_init(void);
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/**
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* qdf_mem_exit() - Exit QDF memory module
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*
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* Return: None
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*
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*/
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void qdf_mem_exit(void);
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#ifdef MEMORY_DEBUG
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/**
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* qdf_mem_malloc_debug() - debug version of QDF memory allocation API
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* @size: Number of bytes of memory to allocate.
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* @file: File name of the call site
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* @line: Line number of the call site
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* @caller: Address of the caller function
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*
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* This function will dynamicallly allocate the specified number of bytes of
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* memory and add it to the qdf tracking list to check for memory leaks and
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* corruptions
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*
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* Return: A valid memory location on success, or NULL on failure
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*/
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void *qdf_mem_malloc_debug(size_t size, const char *file, uint32_t line,
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void *caller);
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#define qdf_mem_malloc(size) \
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qdf_mem_malloc_debug(size, __FILE__, __LINE__, QDF_RET_IP)
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/**
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* qdf_mem_free_debug() - debug version of qdf_mem_free
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* @ptr: Pointer to the starting address of the memory to be freed.
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*
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* This function will free the memory pointed to by 'ptr'. It also checks for
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* memory corruption, underrun, overrun, double free, domain mismatch, etc.
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*
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* Return: none
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*/
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void qdf_mem_free_debug(void *ptr, const char *file, uint32_t line);
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#define qdf_mem_free(ptr) \
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qdf_mem_free_debug(ptr, __FILE__, __LINE__)
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/**
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* qdf_mem_check_for_leaks() - Assert that the current memory domain is empty
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*
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* Call this to ensure there are no active memory allocations being tracked
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* against the current debug domain. For example, one should call this function
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* immediately before a call to qdf_debug_domain_set() as a memory leak
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* detection mechanism.
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*
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* e.g.
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* qdf_debug_domain_set(QDF_DEBUG_DOMAIN_ACTIVE);
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*
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* ...
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*
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* // memory is allocated and freed
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*
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* ...
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*
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* // before transitioning back to inactive state,
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* // make sure all active memory has been freed
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* qdf_mem_check_for_leaks();
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* qdf_debug_domain_set(QDF_DEBUG_DOMAIN_INIT);
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*
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* ...
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*
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* // also, before program exit, make sure init time memory is freed
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* qdf_mem_check_for_leaks();
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* exit();
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*
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* Return: None
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*/
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void qdf_mem_check_for_leaks(void);
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/**
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* qdf_mem_alloc_consistent_debug() - allocates consistent qdf memory
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* @osdev: OS device handle
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* @dev: Pointer to device handle
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* @size: Size to be allocated
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* @paddr: Physical address
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* @file: file name of the call site
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* @line: line numbe rof the call site
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* @caller: Address of the caller function
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*
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* Return: pointer of allocated memory or null if memory alloc fails
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*/
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void *qdf_mem_alloc_consistent_debug(qdf_device_t osdev, void *dev,
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qdf_size_t size, qdf_dma_addr_t *paddr,
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const char *file, uint32_t line,
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void *caller);
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#define qdf_mem_alloc_consistent(osdev, dev, size, paddr) \
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qdf_mem_alloc_consistent_debug(osdev, dev, size, paddr, \
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__FILE__, __LINE__, QDF_RET_IP)
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/**
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* qdf_mem_free_consistent_debug() - free consistent qdf memory
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* @osdev: OS device handle
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* @size: Size to be allocated
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* @vaddr: virtual address
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* @paddr: Physical address
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* @memctx: Pointer to DMA context
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* @file: file name of the call site
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* @line: line numbe rof the call site
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*
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* Return: none
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*/
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void qdf_mem_free_consistent_debug(qdf_device_t osdev, void *dev,
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qdf_size_t size, void *vaddr,
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qdf_dma_addr_t paddr,
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qdf_dma_context_t memctx,
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const char *file, uint32_t line);
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#define qdf_mem_free_consistent(osdev, dev, size, vaddr, paddr, memctx) \
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qdf_mem_free_consistent_debug(osdev, dev, size, vaddr, paddr, memctx, \
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__FILE__, __LINE__)
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#else
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void *qdf_mem_malloc(qdf_size_t size);
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/**
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* qdf_mem_free() - free QDF memory
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* @ptr: Pointer to the starting address of the memory to be freed.
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*
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* Return: None
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*/
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void qdf_mem_free(void *ptr);
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static inline void qdf_mem_check_for_leaks(void) { }
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void *qdf_mem_alloc_consistent(qdf_device_t osdev, void *dev,
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qdf_size_t size, qdf_dma_addr_t *paddr);
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void qdf_mem_free_consistent(qdf_device_t osdev, void *dev,
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qdf_size_t size, void *vaddr,
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qdf_dma_addr_t paddr, qdf_dma_context_t memctx);
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#endif /* MEMORY_DEBUG */
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void *qdf_mem_alloc_outline(qdf_device_t osdev, qdf_size_t size);
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void qdf_mem_set(void *ptr, uint32_t num_bytes, uint32_t value);
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void qdf_mem_zero(void *ptr, uint32_t num_bytes);
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void qdf_mem_copy(void *dst_addr, const void *src_addr, uint32_t num_bytes);
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void qdf_mem_move(void *dst_addr, const void *src_addr, uint32_t num_bytes);
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void qdf_mem_free_outline(void *buf);
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void qdf_mem_zero_outline(void *buf, qdf_size_t size);
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void qdf_ether_addr_copy(void *dst_addr, const void *src_addr);
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/**
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* qdf_mem_cmp() - memory compare
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* @memory1: pointer to one location in memory to compare.
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* @memory2: pointer to second location in memory to compare.
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* @num_bytes: the number of bytes to compare.
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*
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* Function to compare two pieces of memory, similar to memcmp function
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* in standard C.
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* Return:
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* int32_t - returns an int value that tells if the memory
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* locations are equal or not equal.
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* 0 -- equal
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* < 0 -- *memory1 is less than *memory2
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* > 0 -- *memory1 is bigger than *memory2
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*/
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static inline int32_t qdf_mem_cmp(const void *memory1, const void *memory2,
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uint32_t num_bytes)
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{
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return __qdf_mem_cmp(memory1, memory2, num_bytes);
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}
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/**
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* qdf_mem_map_nbytes_single - Map memory for DMA
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* @osdev: pomter OS device context
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* @buf: pointer to memory to be dma mapped
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* @dir: DMA map direction
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* @nbytes: number of bytes to be mapped.
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* @phy_addr: ponter to recive physical address.
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*
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* Return: success/failure
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*/
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static inline uint32_t qdf_mem_map_nbytes_single(qdf_device_t osdev, void *buf,
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qdf_dma_dir_t dir, int nbytes,
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qdf_dma_addr_t *phy_addr)
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{
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#if defined(HIF_PCI)
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return __qdf_mem_map_nbytes_single(osdev, buf, dir, nbytes, phy_addr);
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#else
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return 0;
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#endif
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}
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/**
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* qdf_mem_unmap_nbytes_single() - un_map memory for DMA
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* @osdev: pomter OS device context
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* @phy_addr: physical address of memory to be dma unmapped
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* @dir: DMA unmap direction
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* @nbytes: number of bytes to be unmapped.
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*
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* Return: none
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*/
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static inline void qdf_mem_unmap_nbytes_single(qdf_device_t osdev,
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qdf_dma_addr_t phy_addr,
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qdf_dma_dir_t dir,
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int nbytes)
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{
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#if defined(HIF_PCI)
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__qdf_mem_unmap_nbytes_single(osdev, phy_addr, dir, nbytes);
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#endif
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}
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/**
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* qdf_mempool_init - Create and initialize memory pool
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* @osdev: platform device object
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* @pool_addr: address of the pool created
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* @elem_cnt: no. of elements in pool
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* @elem_size: size of each pool element in bytes
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* @flags: flags
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* Return: Handle to memory pool or NULL if allocation failed
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*/
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static inline int qdf_mempool_init(qdf_device_t osdev,
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qdf_mempool_t *pool_addr, int elem_cnt,
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size_t elem_size, uint32_t flags)
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{
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return __qdf_mempool_init(osdev, pool_addr, elem_cnt, elem_size,
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flags);
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}
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/**
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* qdf_mempool_destroy - Destroy memory pool
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* @osdev: platform device object
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* @Handle: to memory pool
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* Return: none
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*/
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static inline void qdf_mempool_destroy(qdf_device_t osdev, qdf_mempool_t pool)
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{
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__qdf_mempool_destroy(osdev, pool);
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}
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/**
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* qdf_mempool_alloc - Allocate an element memory pool
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* @osdev: platform device object
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* @Handle: to memory pool
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* Return: Pointer to the allocated element or NULL if the pool is empty
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*/
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static inline void *qdf_mempool_alloc(qdf_device_t osdev, qdf_mempool_t pool)
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{
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return (void *)__qdf_mempool_alloc(osdev, pool);
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}
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/**
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* qdf_mempool_free - Free a memory pool element
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* @osdev: Platform device object
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* @pool: Handle to memory pool
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* @buf: Element to be freed
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* Return: none
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*/
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static inline void qdf_mempool_free(qdf_device_t osdev, qdf_mempool_t pool,
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void *buf)
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{
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__qdf_mempool_free(osdev, pool, buf);
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}
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void qdf_mem_dma_sync_single_for_device(qdf_device_t osdev,
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qdf_dma_addr_t bus_addr,
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qdf_size_t size,
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__dma_data_direction direction);
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void qdf_mem_dma_sync_single_for_cpu(qdf_device_t osdev,
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qdf_dma_addr_t bus_addr,
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qdf_size_t size,
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__dma_data_direction direction);
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void qdf_mem_multi_pages_alloc(qdf_device_t osdev,
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struct qdf_mem_multi_page_t *pages,
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size_t element_size, uint16_t element_num,
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qdf_dma_context_t memctxt, bool cacheable);
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void qdf_mem_multi_pages_free(qdf_device_t osdev,
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struct qdf_mem_multi_page_t *pages,
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qdf_dma_context_t memctxt, bool cacheable);
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int qdf_mem_multi_page_link(qdf_device_t osdev,
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struct qdf_mem_multi_page_t *pages,
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uint32_t elem_size, uint32_t elem_count, uint8_t cacheable);
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/**
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* qdf_mem_skb_inc() - increment total skb allocation size
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* @size: size to be added
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*
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* Return: none
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*/
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void qdf_mem_skb_inc(qdf_size_t size);
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/**
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* qdf_mem_skb_dec() - decrement total skb allocation size
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* @size: size to be decremented
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*
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* Return: none
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*/
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void qdf_mem_skb_dec(qdf_size_t size);
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/**
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* qdf_mem_map_table_alloc() - Allocate shared memory info structure
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* @num: number of required storage
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*
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* Allocate mapping table for DMA memory allocation. This is needed for
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* IPA-WLAN buffer sharing when SMMU Stage1 Translation is enabled.
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*
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* Return: shared memory info storage table pointer
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*/
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static inline qdf_mem_info_t *qdf_mem_map_table_alloc(uint32_t num)
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{
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qdf_mem_info_t *mem_info_arr;
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mem_info_arr = qdf_mem_malloc(num * sizeof(mem_info_arr[0]));
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return mem_info_arr;
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}
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/**
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* qdf_update_mem_map_table() - Update DMA memory map info
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* @osdev: Parent device instance
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* @mem_info: Pointer to shared memory information
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* @dma_addr: dma address
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* @mem_size: memory size allocated
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*
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* Store DMA shared memory information
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*
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* Return: none
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*/
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static inline void qdf_update_mem_map_table(qdf_device_t osdev,
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qdf_mem_info_t *mem_info,
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qdf_dma_addr_t dma_addr,
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uint32_t mem_size)
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{
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if (!mem_info) {
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__qdf_print("%s: NULL mem_info\n", __func__);
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return;
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}
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__qdf_update_mem_map_table(osdev, mem_info, dma_addr, mem_size);
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}
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/**
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* qdf_mem_smmu_s1_enabled() - Return SMMU stage 1 translation enable status
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* @osdev parent device instance
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*
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* Return: true if smmu s1 enabled, false if smmu s1 is bypassed
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*/
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static inline bool qdf_mem_smmu_s1_enabled(qdf_device_t osdev)
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{
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return __qdf_mem_smmu_s1_enabled(osdev);
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}
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/**
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* qdf_mem_paddr_from_dmaaddr() - get actual physical address from dma address
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* @osdev: Parent device instance
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* @dma_addr: DMA/IOVA address
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*
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* Get actual physical address from dma_addr based on SMMU enablement status.
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* IF SMMU Stage 1 tranlation is enabled, DMA APIs return IO virtual address
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* (IOVA) otherwise returns physical address. So get SMMU physical address
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* mapping from IOVA.
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*
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* Return: dmaable physical address
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*/
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static inline qdf_dma_addr_t qdf_mem_paddr_from_dmaaddr(qdf_device_t osdev,
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qdf_dma_addr_t dma_addr)
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{
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return __qdf_mem_paddr_from_dmaaddr(osdev, dma_addr);
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}
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/**
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* qdf_os_mem_dma_get_sgtable() - Returns DMA memory scatter gather table
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* @dev: device instace
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* @sgt: scatter gather table pointer
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* @cpu_addr: HLOS virtual address
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* @dma_addr: dma address
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* @size: allocated memory size
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*
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* Return: physical address
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*/
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static inline int
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qdf_mem_dma_get_sgtable(struct device *dev, void *sgt, void *cpu_addr,
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qdf_dma_addr_t dma_addr, size_t size)
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{
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return __qdf_os_mem_dma_get_sgtable(dev, sgt, cpu_addr, dma_addr, size);
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}
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/**
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* qdf_mem_get_dma_addr() - Return dma address based on SMMU translation status.
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* @osdev: Parent device instance
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* @mem_info: Pointer to allocated memory information
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*
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* Get dma address based on SMMU enablement status. If SMMU Stage 1
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* tranlation is enabled, DMA APIs return IO virtual address otherwise
|
|
* returns physical address.
|
|
*
|
|
* Return: dma address
|
|
*/
|
|
static inline qdf_dma_addr_t qdf_mem_get_dma_addr(qdf_device_t osdev,
|
|
qdf_mem_info_t *mem_info)
|
|
{
|
|
return __qdf_mem_get_dma_addr(osdev, mem_info);
|
|
}
|
|
|
|
/**
|
|
* qdf_mem_get_dma_addr_ptr() - Return DMA address pointer from mem info struct
|
|
* @osdev: Parent device instance
|
|
* @mem_info: Pointer to allocated memory information
|
|
*
|
|
* Based on smmu stage 1 translation enablement, return corresponding dma
|
|
* address storage pointer.
|
|
*
|
|
* Return: dma address storage pointer
|
|
*/
|
|
static inline qdf_dma_addr_t *qdf_mem_get_dma_addr_ptr(qdf_device_t osdev,
|
|
qdf_mem_info_t *mem_info)
|
|
{
|
|
return __qdf_mem_get_dma_addr_ptr(osdev, mem_info);
|
|
}
|
|
|
|
|
|
/**
|
|
* qdf_mem_get_dma_size() - Return DMA memory size
|
|
* @osdev: parent device instance
|
|
* @mem_info: Pointer to allocated memory information
|
|
*
|
|
* Return: DMA memory size
|
|
*/
|
|
static inline uint32_t
|
|
qdf_mem_get_dma_size(qdf_device_t osdev,
|
|
qdf_mem_info_t *mem_info)
|
|
{
|
|
return __qdf_mem_get_dma_size(osdev, mem_info);
|
|
}
|
|
|
|
/**
|
|
* qdf_mem_set_dma_size() - Set DMA memory size
|
|
* @osdev: parent device instance
|
|
* @mem_info: Pointer to allocated memory information
|
|
* @mem_size: memory size allocated
|
|
*
|
|
* Return: none
|
|
*/
|
|
static inline void
|
|
qdf_mem_set_dma_size(qdf_device_t osdev,
|
|
qdf_mem_info_t *mem_info,
|
|
uint32_t mem_size)
|
|
{
|
|
__qdf_mem_set_dma_size(osdev, mem_info, mem_size);
|
|
}
|
|
|
|
/**
|
|
* qdf_mem_get_dma_size() - Return DMA physical address
|
|
* @osdev: parent device instance
|
|
* @mem_info: Pointer to allocated memory information
|
|
*
|
|
* Return: DMA physical address
|
|
*/
|
|
static inline qdf_dma_addr_t
|
|
qdf_mem_get_dma_pa(qdf_device_t osdev,
|
|
qdf_mem_info_t *mem_info)
|
|
{
|
|
return __qdf_mem_get_dma_pa(osdev, mem_info);
|
|
}
|
|
|
|
/**
|
|
* qdf_mem_set_dma_size() - Set DMA physical address
|
|
* @osdev: parent device instance
|
|
* @mem_info: Pointer to allocated memory information
|
|
* @dma_pa: DMA phsical address
|
|
*
|
|
* Return: none
|
|
*/
|
|
static inline void
|
|
qdf_mem_set_dma_pa(qdf_device_t osdev,
|
|
qdf_mem_info_t *mem_info,
|
|
qdf_dma_addr_t dma_pa)
|
|
{
|
|
__qdf_mem_set_dma_pa(osdev, mem_info, dma_pa);
|
|
}
|
|
|
|
/**
|
|
* qdf_mem_shared_mem_alloc() - Allocate DMA memory for shared resource
|
|
* @osdev: parent device instance
|
|
* @mem_info: Pointer to allocated memory information
|
|
* @size: size to be allocated
|
|
*
|
|
* Allocate DMA memory which will be shared with external kernel module. This
|
|
* information is needed for SMMU mapping.
|
|
*
|
|
* Return: 0 suceess
|
|
*/
|
|
static inline qdf_shared_mem_t *qdf_mem_shared_mem_alloc(qdf_device_t osdev,
|
|
uint32_t size)
|
|
{
|
|
qdf_shared_mem_t *shared_mem;
|
|
|
|
shared_mem = qdf_mem_malloc(sizeof(*shared_mem));
|
|
if (!shared_mem) {
|
|
__qdf_print("%s: Unable to allocate memory for shared resource struct\n",
|
|
__func__);
|
|
return NULL;
|
|
}
|
|
|
|
shared_mem->vaddr = qdf_mem_alloc_consistent(osdev, osdev->dev,
|
|
size, qdf_mem_get_dma_addr_ptr(osdev,
|
|
&shared_mem->mem_info));
|
|
if (!shared_mem->vaddr) {
|
|
__qdf_print("%s; Unable to allocate DMA memory for shared resource\n",
|
|
__func__);
|
|
qdf_mem_free(shared_mem);
|
|
return NULL;
|
|
}
|
|
|
|
qdf_mem_set_dma_size(osdev, &shared_mem->mem_info, size);
|
|
qdf_mem_zero(shared_mem->vaddr,
|
|
qdf_mem_get_dma_size(osdev, &shared_mem->mem_info));
|
|
qdf_mem_set_dma_pa(osdev, &shared_mem->mem_info,
|
|
qdf_mem_paddr_from_dmaaddr(osdev,
|
|
qdf_mem_get_dma_addr(osdev,
|
|
&shared_mem->mem_info)));
|
|
qdf_mem_dma_get_sgtable(osdev->dev,
|
|
(void *)&shared_mem->sgtable,
|
|
shared_mem->vaddr,
|
|
qdf_mem_get_dma_addr(osdev,
|
|
&shared_mem->mem_info),
|
|
qdf_mem_get_dma_size(osdev,
|
|
&shared_mem->mem_info));
|
|
|
|
shared_mem->sgtable.sgl->dma_address =
|
|
qdf_mem_get_dma_pa(osdev, &shared_mem->mem_info);
|
|
|
|
return shared_mem;
|
|
}
|
|
|
|
/**
|
|
* qdf_mem_shared_mem_free() - Free shared memory
|
|
* @osdev: parent device instance
|
|
* @shared_mem: shared memory information storage
|
|
*
|
|
* Free DMA shared memory resource
|
|
*
|
|
* Return: None
|
|
*/
|
|
static inline void qdf_mem_shared_mem_free(qdf_device_t osdev,
|
|
qdf_shared_mem_t *shared_mem)
|
|
{
|
|
if (!shared_mem) {
|
|
__qdf_print("%s: NULL shared mem struct passed\n",
|
|
__func__);
|
|
return;
|
|
}
|
|
|
|
if (shared_mem->vaddr) {
|
|
qdf_mem_free_consistent(osdev, osdev->dev,
|
|
qdf_mem_get_dma_size(osdev,
|
|
&shared_mem->mem_info),
|
|
shared_mem->vaddr,
|
|
qdf_mem_get_dma_addr(osdev,
|
|
&shared_mem->mem_info),
|
|
qdf_get_dma_mem_context(shared_mem,
|
|
memctx));
|
|
}
|
|
qdf_mem_free(shared_mem);
|
|
}
|
|
|
|
#endif /* __QDF_MEMORY_H */
|