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Searched refs:swiotlb (Results 1 – 11 of 11) sorted by relevance

/linux/Documentation/core-api/
H A Dswiotlb.rst4 DMA and swiotlb
7 swiotlb is a memory buffer allocator used by the Linux kernel DMA layer. It is
10 the DMA layer calls swiotlb to allocate a temporary memory buffer that conforms
16 Device drivers don't interact directly with swiotlb. Instead, drivers inform
31 swiotlb was originally created to handle DMA for devices with addressing
61 The primary swiotlb APIs are swiotlb_tbl_map_single() and
77 swiotlb also provides "sync" APIs that correspond to the dma_sync_*() APIs that
79 device. The swiotlb "sync" APIs cause a CPU copy of the data between the
80 original buffer and the bounce buffer. Like the dma_sync_*() APIs, the swiotlb
86 The swiotlb map/unmap/sync APIs must operate without blocking, as they are
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H A Dindex.rst115 swiotlb
H A Ddma-api.rst199 :doc:`SWIOTLB <swiotlb>`. However, these methods are not always
/linux/kernel/dma/
H A DMakefile9 obj-$(CONFIG_SWIOTLB) += swiotlb.o
H A DKconfig105 overridden at runtime using the "swiotlb=<nslabs>" kernel command line
120 "swiotlb=" on the kernel command line.
143 and <kernel/dma/swiotlb.c>.
/linux/include/trace/events/
H A Dswiotlb.h3 #define TRACE_SYSTEM swiotlb
/linux/arch/riscv/mm/
H A Dinit.c14 #include <linux/swiotlb.h>
169 bool swiotlb = max_pfn > PFN_DOWN(dma32_phys_limit) && in arch_mm_preinit()
176 if (IS_ENABLED(CONFIG_DMA_BOUNCE_UNALIGNED_KMALLOC) && !swiotlb && in arch_mm_preinit()
190 swiotlb = true; in arch_mm_preinit()
194 swiotlb_init(swiotlb, swiotlb_flags); in arch_mm_preinit()
168 bool swiotlb = max_pfn > PFN_DOWN(dma32_phys_limit) && arch_mm_preinit() local
/linux/arch/arm64/boot/dts/mediatek/
H A Dmt7622-bananapi-bpi-r64.dts27 bootargs = "earlycon=uart8250,mmio32,0x11002000 swiotlb=512";
/linux/Documentation/virt/hyperv/
H A Dcoco.rst214 Linux kernel DMA APIs, and so bounce buffering through decrypted swiotlb
222 DMA APIs, and is bounce buffered through swiotlb memory implicitly like in
/linux/Documentation/admin-guide/
H A Dkernel-parameters.txt1087 e.g. swiotlb requires at least 64M+32K low memory, also
7522 swiotlb= [ARM,PPC,MIPS,X86,S390,EARLY]
7525 <int> -- Second integer after comma. Number of swiotlb
7531 track_hiwater -- Track high watermark of swiotlb buffers.
/linux/
H A DMAINTAINERS7786 F: include/linux/swiotlb.h
30103 F: arch/*/include/asm/xen/swiotlb-xen.h
30104 F: drivers/xen/swiotlb-xen.c
30105 F: include/xen/arm/swiotlb-xen.h
30106 F: include/xen/swiotlb-xen.h