Merge tag 'dma-mapping-6.19-2025-12-05' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux

Pull dma-mapping updates from Marek Szyprowski:

 - More DMA mapping API refactoring to physical addresses as the primary
   interface instead of page+offset parameters.

   This time dma_map_ops callbacks are converted to physical addresses,
   what in turn results also in some simplification of architecture
   specific code (Leon Romanovsky and Jason Gunthorpe)

 - Clarify that dma_map_benchmark is not a kernel self-test, but
   standalone tool (Qinxin Xia)

* tag 'dma-mapping-6.19-2025-12-05' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux:
  dma-mapping: remove unused map_page callback
  xen: swiotlb: Convert mapping routine to rely on physical address
  x86: Use physical address for DMA mapping
  sparc: Use physical address DMA mapping
  powerpc: Convert to physical address DMA mapping
  parisc: Convert DMA map_page to map_phys interface
  MIPS/jazzdma: Provide physical address directly
  alpha: Convert mapping routine to rely on physical address
  dma-mapping: remove unused mapping resource callbacks
  xen: swiotlb: Switch to physical address mapping callbacks
  ARM: dma-mapping: Switch to physical address mapping callbacks
  ARM: dma-mapping: Reduce struct page exposure in arch_sync_dma*()
  dma-mapping: convert dummy ops to physical address mapping
  dma-mapping: prepare dma_map_ops to conversion to physical address
  tools/dma: move dma_map_benchmark from selftests to tools/dma

3 files changed, 0 insertions, 136 deletions

diff --git a/tools/testing/selftests/dma/Makefile b/tools/testing/selftests/dma/Makefile
deleted file mode 100644
index cd8c5ece1cba..000000000000
--- a/tools/testing/selftests/dma/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-CFLAGS += -I../../../../usr/include/
-CFLAGS += -I../../../../include/
-
-TEST_GEN_PROGS := dma_map_benchmark
-
-include ../lib.mk
diff --git a/tools/testing/selftests/dma/config b/tools/testing/selftests/dma/config
deleted file mode 100644
index 6102ee3c43cd..000000000000
--- a/tools/testing/selftests/dma/config
+++ /dev/null
@@ -1 +0,0 @@
-CONFIG_DMA_MAP_BENCHMARK=y
diff --git a/tools/testing/selftests/dma/dma_map_benchmark.c b/tools/testing/selftests/dma/dma_map_benchmark.c
deleted file mode 100644
index b925756373ce..000000000000
--- a/tools/testing/selftests/dma/dma_map_benchmark.c
+++ /dev/null
@@ -1,128 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2020 HiSilicon Limited.
- */
-
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <linux/types.h>
-#include <linux/map_benchmark.h>
-
-#define NSEC_PER_MSEC	1000000L
-
-static char *directions[] = {
-	"BIDIRECTIONAL",
-	"TO_DEVICE",
-	"FROM_DEVICE",
-};
-
-int main(int argc, char **argv)
-{
-	struct map_benchmark map;
-	int fd, opt;
-	/* default single thread, run 20 seconds on NUMA_NO_NODE */
-	int threads = 1, seconds = 20, node = -1;
-	/* default dma mask 32bit, bidirectional DMA */
-	int bits = 32, xdelay = 0, dir = DMA_MAP_BIDIRECTIONAL;
-	/* default granule 1 PAGESIZE */
-	int granule = 1;
-
-	int cmd = DMA_MAP_BENCHMARK;
-
-	while ((opt = getopt(argc, argv, "t:s:n:b:d:x:g:")) != -1) {
-		switch (opt) {
-		case 't':
-			threads = atoi(optarg);
-			break;
-		case 's':
-			seconds = atoi(optarg);
-			break;
-		case 'n':
-			node = atoi(optarg);
-			break;
-		case 'b':
-			bits = atoi(optarg);
-			break;
-		case 'd':
-			dir = atoi(optarg);
-			break;
-		case 'x':
-			xdelay = atoi(optarg);
-			break;
-		case 'g':
-			granule = atoi(optarg);
-			break;
-		default:
-			return -1;
-		}
-	}
-
-	if (threads <= 0 || threads > DMA_MAP_MAX_THREADS) {
-		fprintf(stderr, "invalid number of threads, must be in 1-%d\n",
-			DMA_MAP_MAX_THREADS);
-		exit(1);
-	}
-
-	if (seconds <= 0 || seconds > DMA_MAP_MAX_SECONDS) {
-		fprintf(stderr, "invalid number of seconds, must be in 1-%d\n",
-			DMA_MAP_MAX_SECONDS);
-		exit(1);
-	}
-
-	if (xdelay < 0 || xdelay > DMA_MAP_MAX_TRANS_DELAY) {
-		fprintf(stderr, "invalid transmit delay, must be in 0-%ld\n",
-			DMA_MAP_MAX_TRANS_DELAY);
-		exit(1);
-	}
-
-	/* suppose the mininum DMA zone is 1MB in the world */
-	if (bits < 20 || bits > 64) {
-		fprintf(stderr, "invalid dma mask bit, must be in 20-64\n");
-		exit(1);
-	}
-
-	if (dir != DMA_MAP_BIDIRECTIONAL && dir != DMA_MAP_TO_DEVICE &&
-			dir != DMA_MAP_FROM_DEVICE) {
-		fprintf(stderr, "invalid dma direction\n");
-		exit(1);
-	}
-
-	if (granule < 1 || granule > 1024) {
-		fprintf(stderr, "invalid granule size\n");
-		exit(1);
-	}
-
-	fd = open("/sys/kernel/debug/dma_map_benchmark", O_RDWR);
-	if (fd == -1) {
-		perror("open");
-		exit(1);
-	}
-
-	memset(&map, 0, sizeof(map));
-	map.seconds = seconds;
-	map.threads = threads;
-	map.node = node;
-	map.dma_bits = bits;
-	map.dma_dir = dir;
-	map.dma_trans_ns = xdelay;
-	map.granule = granule;
-
-	if (ioctl(fd, cmd, &map)) {
-		perror("ioctl");
-		exit(1);
-	}
-
-	printf("dma mapping benchmark: threads:%d seconds:%d node:%d dir:%s granule: %d\n",
-			threads, seconds, node, directions[dir], granule);
-	printf("average map latency(us):%.1f standard deviation:%.1f\n",
-			map.avg_map_100ns/10.0, map.map_stddev/10.0);
-	printf("average unmap latency(us):%.1f standard deviation:%.1f\n",
-			map.avg_unmap_100ns/10.0, map.unmap_stddev/10.0);
-
-	return 0;
-}