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a08f452324
Fixes all over the place, most notably vhost scsi IO error fixes. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> -----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEXQn9CHHI+FuUyooNKB8NuNKNVGkFAl+yetgPHG1zdEByZWRo YXQuY29tAAoJECgfDbjSjVRpSn8H/0zPUDrKVCHhfVI7RfgWw6yC+rNgBZOXNAeW xmwS4eqmsg4oPxn/QCP0Ce3V9Up7PGcxoKmQoEIJnSxlFzRw5AkpiqUU8sfChPL6 m3/0N+E3TthYvdR3t8vNz/I2g+1IY/XIM74Q0bdemjlPvG4FCZPuuZqIqvllXQB8 Mt5Ab1PvuTs/xmYc9qwZeHls+/v1/oDJTLmB2ezOY8SNE9KmyjzL4GwCjESioZ5B pzTS2pV2nAWgSjSNX87Q0irZjg7XSvXST/nCkwsDAiBAI4nuwHndq0g1gHQ+8137 NRXWo+yv9Exu0u9YM02g1pwYOBo4K042nsZy7EYFfHSelfuNnAk= =v8nS -----END PGP SIGNATURE----- Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost Pull vhost fixes from Michael Tsirkin: "Fixes all over the place, most notably vhost scsi IO error fixes" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: vhost scsi: Add support for LUN resets. vhost scsi: add lun parser helper vhost scsi: fix cmd completion race vhost scsi: alloc cmds per vq instead of session vhost: add helper to check if a vq has been setup vdpasim: fix "mac_pton" undefined error swiotlb: using SIZE_MAX needs limits.h included
108 lines
2.8 KiB
C
108 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __LINUX_SWIOTLB_H
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#define __LINUX_SWIOTLB_H
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#include <linux/dma-direction.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/limits.h>
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struct device;
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struct page;
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struct scatterlist;
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enum swiotlb_force {
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SWIOTLB_NORMAL, /* Default - depending on HW DMA mask etc. */
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SWIOTLB_FORCE, /* swiotlb=force */
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SWIOTLB_NO_FORCE, /* swiotlb=noforce */
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};
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/*
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* Maximum allowable number of contiguous slabs to map,
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* must be a power of 2. What is the appropriate value ?
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* The complexity of {map,unmap}_single is linearly dependent on this value.
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*/
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#define IO_TLB_SEGSIZE 128
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/*
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* log of the size of each IO TLB slab. The number of slabs is command line
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* controllable.
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*/
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#define IO_TLB_SHIFT 11
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extern void swiotlb_init(int verbose);
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int swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose);
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extern unsigned long swiotlb_nr_tbl(void);
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unsigned long swiotlb_size_or_default(void);
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extern int swiotlb_late_init_with_tbl(char *tlb, unsigned long nslabs);
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extern int swiotlb_late_init_with_default_size(size_t default_size);
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extern void __init swiotlb_update_mem_attributes(void);
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/*
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* Enumeration for sync targets
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*/
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enum dma_sync_target {
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SYNC_FOR_CPU = 0,
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SYNC_FOR_DEVICE = 1,
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};
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phys_addr_t swiotlb_tbl_map_single(struct device *hwdev, phys_addr_t phys,
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size_t mapping_size, size_t alloc_size,
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enum dma_data_direction dir, unsigned long attrs);
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extern void swiotlb_tbl_unmap_single(struct device *hwdev,
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phys_addr_t tlb_addr,
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size_t mapping_size,
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size_t alloc_size,
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enum dma_data_direction dir,
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unsigned long attrs);
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extern void swiotlb_tbl_sync_single(struct device *hwdev,
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phys_addr_t tlb_addr,
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size_t size, enum dma_data_direction dir,
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enum dma_sync_target target);
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dma_addr_t swiotlb_map(struct device *dev, phys_addr_t phys,
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size_t size, enum dma_data_direction dir, unsigned long attrs);
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#ifdef CONFIG_SWIOTLB
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extern enum swiotlb_force swiotlb_force;
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extern phys_addr_t io_tlb_start, io_tlb_end;
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static inline bool is_swiotlb_buffer(phys_addr_t paddr)
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{
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return paddr >= io_tlb_start && paddr < io_tlb_end;
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}
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void __init swiotlb_exit(void);
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unsigned int swiotlb_max_segment(void);
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size_t swiotlb_max_mapping_size(struct device *dev);
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bool is_swiotlb_active(void);
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#else
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#define swiotlb_force SWIOTLB_NO_FORCE
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static inline bool is_swiotlb_buffer(phys_addr_t paddr)
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{
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return false;
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}
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static inline void swiotlb_exit(void)
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{
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}
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static inline unsigned int swiotlb_max_segment(void)
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{
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return 0;
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}
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static inline size_t swiotlb_max_mapping_size(struct device *dev)
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{
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return SIZE_MAX;
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}
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static inline bool is_swiotlb_active(void)
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{
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return false;
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}
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#endif /* CONFIG_SWIOTLB */
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extern void swiotlb_print_info(void);
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extern void swiotlb_set_max_segment(unsigned int);
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#endif /* __LINUX_SWIOTLB_H */
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