Release 4.14 arch/sparc/kernel/iommu_common.h
/* SPDX-License-Identifier: GPL-2.0 */
/* iommu_common.h: UltraSparc SBUS/PCI common iommu declarations.
*
* Copyright (C) 1999, 2008 David S. Miller (davem@davemloft.net)
*/
#ifndef _IOMMU_COMMON_H
#define _IOMMU_COMMON_H
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/scatterlist.h>
#include <linux/device.h>
#include <linux/iommu-helper.h>
#include <asm/iommu.h>
/*
* These give mapping size of each iommu pte/tlb.
*/
#define IO_PAGE_SHIFT 13
#define IO_PAGE_SIZE (1UL << IO_PAGE_SHIFT)
#define IO_PAGE_MASK (~(IO_PAGE_SIZE-1))
#define IO_PAGE_ALIGN(addr) ALIGN(addr, IO_PAGE_SIZE)
#define IO_TSB_ENTRIES (128*1024)
#define IO_TSB_SIZE (IO_TSB_ENTRIES * 8)
/*
* This is the hardwired shift in the iotlb tag/data parts.
*/
#define IOMMU_PAGE_SHIFT 13
#define SG_ENT_PHYS_ADDRESS(SG) (__pa(sg_virt((SG))))
static inline int is_span_boundary(unsigned long entry,
unsigned long shift,
unsigned long boundary_size,
struct scatterlist *outs,
struct scatterlist *sg)
{
unsigned long paddr = SG_ENT_PHYS_ADDRESS(outs);
int nr = iommu_num_pages(paddr, outs->dma_length + sg->length,
IO_PAGE_SIZE);
return iommu_is_span_boundary(entry, nr, shift, boundary_size);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| FUJITA Tomonori | 65 | 95.59% | 1 | 50.00% |
| Joerg Roedel | 3 | 4.41% | 1 | 50.00% |
| Total | 68 | 100.00% | 2 | 100.00% |
#define SPARC_MAPPING_ERROR (~(dma_addr_t)0x0)
#endif /* _IOMMU_COMMON_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| FUJITA Tomonori | 74 | 50.34% | 3 | 23.08% |
| Linus Torvalds | 36 | 24.49% | 2 | 15.38% |
| David S. Miller | 17 | 11.56% | 2 | 15.38% |
| Linus Torvalds (pre-git) | 10 | 6.80% | 1 | 7.69% |
| Christoph Hellwig | 5 | 3.40% | 2 | 15.38% |
| Joerg Roedel | 3 | 2.04% | 1 | 7.69% |
| Andrea Righi | 1 | 0.68% | 1 | 7.69% |
| Greg Kroah-Hartman | 1 | 0.68% | 1 | 7.69% |
| Total | 147 | 100.00% | 13 | 100.00% |
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