Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) Huawei Technologies Co., Ltd. 2025. All rights reserved.
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#include <linux/delay.h>
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#include <linux/dma-mapping.h>
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#include <linux/iopoll.h>
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#include "hinic3_common.h"
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int hinic3_dma_zalloc_coherent_align(struct device *dev, u32 size, u32 align,
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gfp_t flag,
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struct hinic3_dma_addr_align *mem_align)
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{
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dma_addr_t paddr, align_paddr;
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void *vaddr, *align_vaddr;
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u32 real_size = size;
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vaddr = dma_alloc_coherent(dev, real_size, &paddr, flag);
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if (!vaddr)
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return -ENOMEM;
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align_paddr = ALIGN(paddr, align);
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if (align_paddr == paddr) {
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align_vaddr = vaddr;
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goto out;
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}
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dma_free_coherent(dev, real_size, vaddr, paddr);
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/* realloc memory for align */
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real_size = size + align;
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vaddr = dma_alloc_coherent(dev, real_size, &paddr, flag);
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if (!vaddr)
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return -ENOMEM;
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align_paddr = ALIGN(paddr, align);
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align_vaddr = vaddr + (align_paddr - paddr);
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out:
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mem_align->real_size = real_size;
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mem_align->ori_vaddr = vaddr;
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mem_align->ori_paddr = paddr;
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mem_align->align_vaddr = align_vaddr;
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mem_align->align_paddr = align_paddr;
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return 0;
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}
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void hinic3_dma_free_coherent_align(struct device *dev,
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struct hinic3_dma_addr_align *mem_align)
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{
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dma_free_coherent(dev, mem_align->real_size,
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mem_align->ori_vaddr, mem_align->ori_paddr);
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}
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int hinic3_wait_for_timeout(void *priv_data, wait_cpl_handler handler,
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u32 wait_total_ms, u32 wait_once_us)
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{
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enum hinic3_wait_return ret;
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int err;
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err = read_poll_timeout(handler, ret, ret == HINIC3_WAIT_PROCESS_CPL,
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wait_once_us, wait_total_ms * USEC_PER_MSEC,
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false, priv_data);
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return err;
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}
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/* Data provided to/by cmdq is arranged in structs with little endian fields but
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* every dword (32bits) should be swapped since HW swaps it again when it
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* copies it from/to host memory.
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*/
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void hinic3_cmdq_buf_swab32(void *data, int len)
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{
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swab32_array(data, len / sizeof(u32));
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}
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