From 2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c Mon Sep 17 00:00:00 2001 From: Sang-Heon Jeon Date: Mon, 24 Aug 2026 01:18:14 +0900 Subject: coccinelle: alloc_cast: drop removed allocators - pci_alloc_consistent() and pci_zalloc_consistent() were removed by commit 7968778914e5 ("PCI: Remove the deprecated "pci-dma-compat.h" API") - kmem_alloc() was removed by commit f078d4ea8276 ("xfs: convert kmem_alloc() to kmalloc()") - kmem_zalloc() was removed by commit 10634530f7ba ("xfs: convert kmem_zalloc() to kzalloc()") - kmem_zone_alloc() and kmem_zone_zalloc() were removed by commit bae633a4a283 ("xfs: remove xfs_zone_{alloc,zalloc} helpers") So drop them from the rules. No functional change. Signed-off-by: Sang-Heon Jeon Signed-off-by: Julia Lawall --- arch/arm64/mm/dma-mapping.c | 59 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 arch/arm64/mm/dma-mapping.c (limited to 'arch/arm64/mm/dma-mapping.c') diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c new file mode 100644 index 000000000..7f6f2f40d --- /dev/null +++ b/arch/arm64/mm/dma-mapping.c @@ -0,0 +1,59 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2012 ARM Ltd. + * Author: Catalin Marinas + */ + +#include +#include +#include +#include + +#include +#include + +void arch_sync_dma_for_device(phys_addr_t paddr, size_t size, + enum dma_data_direction dir) +{ + unsigned long start = (unsigned long)phys_to_virt(paddr); + + dcache_clean_poc_nosync(start, start + size); +} + +void arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size, + enum dma_data_direction dir) +{ + unsigned long start = (unsigned long)phys_to_virt(paddr); + + if (dir == DMA_TO_DEVICE) + return; + + dcache_inval_poc_nosync(start, start + size); +} + +void arch_dma_prep_coherent(struct page *page, size_t size) +{ + unsigned long start = (unsigned long)page_address(page); + + dcache_clean_poc(start, start + size); +} + +void arch_setup_dma_ops(struct device *dev, bool coherent) +{ + int cls = cache_line_size_of_cpu(); + + if (!coherent && !CLIDR_LOC(read_sysreg(clidr_el1))) { + dev_warn(dev, "CLIDR_EL1.LoC == 0, treating as coherent\n"); + coherent = true; + } + + WARN_TAINT(!coherent && cls > ARCH_DMA_MINALIGN, + TAINT_CPU_OUT_OF_SPEC, + "%s %s: ARCH_DMA_MINALIGN smaller than CTR_EL0.CWG (%d < %d)", + dev_driver_string(dev), dev_name(dev), + ARCH_DMA_MINALIGN, cls); + + dev_assign_dma_coherent(dev, coherent); + + xen_setup_dma_ops(dev); +} -- cgit v1.3.1