From: Leon Romanovsky <leon@kernel•org>
To: Marek Szyprowski <m.szyprowski@samsung•com>,
Robin Murphy <robin.murphy@arm•com>,
Russell King <linux@armlinux•org.uk>,
Juergen Gross <jgross@suse•com>,
Stefano Stabellini <sstabellini@kernel•org>,
Oleksandr Tyshchenko <oleksandr_tyshchenko@epam•com>,
Richard Henderson <richard.henderson@linaro•org>,
Matt Turner <mattst88@gmail•com>,
Thomas Bogendoerfer <tsbogend@alpha•franken.de>,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership•com>,
Helge Deller <deller@gmx•de>,
Madhavan Srinivasan <maddy@linux•ibm.com>,
Michael Ellerman <mpe@ellerman•id.au>,
Nicholas Piggin <npiggin@gmail•com>,
Christophe Leroy <christophe.leroy@csgroup•eu>,
Geoff Levand <geoff@infradead•org>,
"David S. Miller" <davem@davemloft•net>,
Andreas Larsson <andreas@gaisler•com>,
Thomas Gleixner <tglx@linutronix•de>,
Ingo Molnar <mingo@redhat•com>, Borislav Petkov <bp@alien8•de>,
Dave Hansen <dave.hansen@linux•intel.com>,
x86@kernel•org, "H. Peter Anvin" <hpa@zytor•com>
Cc: iommu@lists•linux.dev, linux-kernel@vger•kernel.org,
linux-arm-kernel@lists•infradead.org,
xen-devel@lists•xenproject.org, linux-alpha@vger•kernel.org,
linux-mips@vger•kernel.org, linux-parisc@vger•kernel.org,
linuxppc-dev@lists•ozlabs.org, sparclinux@vger•kernel.org,
Jason Gunthorpe <jgg@ziepe•ca>, Jason Gunthorpe <jgg@nvidia•com>
Subject: [PATCH v5 13/14] xen: swiotlb: Convert mapping routine to rely on physical address
Date: Wed, 15 Oct 2025 12:12:59 +0300 [thread overview]
Message-ID: <20251015-remove-map-page-v5-13-3bbfe3a25cdf@kernel.org> (raw)
In-Reply-To: <20251015-remove-map-page-v5-0-3bbfe3a25cdf@kernel.org>
From: Leon Romanovsky <leonro@nvidia•com>
Switch to .map_phys callback instead of .map_page.
Reviewed-by: Jason Gunthorpe <jgg@nvidia•com>
Signed-off-by: Leon Romanovsky <leonro@nvidia•com>
---
drivers/xen/grant-dma-ops.c | 20 ++++++++++++--------
1 file changed, 12 insertions(+), 8 deletions(-)
diff --git a/drivers/xen/grant-dma-ops.c b/drivers/xen/grant-dma-ops.c
index 29257d2639db..14077d23f2a1 100644
--- a/drivers/xen/grant-dma-ops.c
+++ b/drivers/xen/grant-dma-ops.c
@@ -163,18 +163,22 @@ static void xen_grant_dma_free_pages(struct device *dev, size_t size,
xen_grant_dma_free(dev, size, page_to_virt(vaddr), dma_handle, 0);
}
-static dma_addr_t xen_grant_dma_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size,
+static dma_addr_t xen_grant_dma_map_phys(struct device *dev, phys_addr_t phys,
+ size_t size,
enum dma_data_direction dir,
unsigned long attrs)
{
struct xen_grant_dma_data *data;
+ unsigned long offset = offset_in_page(phys);
unsigned long dma_offset = xen_offset_in_page(offset),
pfn_offset = XEN_PFN_DOWN(offset);
unsigned int i, n_pages = XEN_PFN_UP(dma_offset + size);
grant_ref_t grant;
dma_addr_t dma_handle;
+ if (unlikely(attrs & DMA_ATTR_MMIO))
+ return DMA_MAPPING_ERROR;
+
if (WARN_ON(dir == DMA_NONE))
return DMA_MAPPING_ERROR;
@@ -190,7 +194,7 @@ static dma_addr_t xen_grant_dma_map_page(struct device *dev, struct page *page,
for (i = 0; i < n_pages; i++) {
gnttab_grant_foreign_access_ref(grant + i, data->backend_domid,
- pfn_to_gfn(page_to_xen_pfn(page) + i + pfn_offset),
+ pfn_to_gfn(page_to_xen_pfn(phys_to_page(phys)) + i + pfn_offset),
dir == DMA_TO_DEVICE);
}
@@ -199,7 +203,7 @@ static dma_addr_t xen_grant_dma_map_page(struct device *dev, struct page *page,
return dma_handle;
}
-static void xen_grant_dma_unmap_page(struct device *dev, dma_addr_t dma_handle,
+static void xen_grant_dma_unmap_phys(struct device *dev, dma_addr_t dma_handle,
size_t size, enum dma_data_direction dir,
unsigned long attrs)
{
@@ -242,7 +246,7 @@ static void xen_grant_dma_unmap_sg(struct device *dev, struct scatterlist *sg,
return;
for_each_sg(sg, s, nents, i)
- xen_grant_dma_unmap_page(dev, s->dma_address, sg_dma_len(s), dir,
+ xen_grant_dma_unmap_phys(dev, s->dma_address, sg_dma_len(s), dir,
attrs);
}
@@ -257,7 +261,7 @@ static int xen_grant_dma_map_sg(struct device *dev, struct scatterlist *sg,
return -EINVAL;
for_each_sg(sg, s, nents, i) {
- s->dma_address = xen_grant_dma_map_page(dev, sg_page(s), s->offset,
+ s->dma_address = xen_grant_dma_map_phys(dev, sg_phys(s),
s->length, dir, attrs);
if (s->dma_address == DMA_MAPPING_ERROR)
goto out;
@@ -286,8 +290,8 @@ static const struct dma_map_ops xen_grant_dma_ops = {
.free_pages = xen_grant_dma_free_pages,
.mmap = dma_common_mmap,
.get_sgtable = dma_common_get_sgtable,
- .map_page = xen_grant_dma_map_page,
- .unmap_page = xen_grant_dma_unmap_page,
+ .map_phys = xen_grant_dma_map_phys,
+ .unmap_phys = xen_grant_dma_unmap_phys,
.map_sg = xen_grant_dma_map_sg,
.unmap_sg = xen_grant_dma_unmap_sg,
.dma_supported = xen_grant_dma_supported,
--
2.51.0
next prev parent reply other threads:[~2025-10-15 9:14 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20251015091313eucas1p2426ae40b579d7f3b4f29b46e0e788c0d@eucas1p2.samsung.com>
2025-10-15 9:12 ` [PATCH v5 00/14] Remove DMA map_page/map_resource and their unmap callbacks Leon Romanovsky
2025-10-15 9:12 ` [PATCH v5 01/14] dma-mapping: prepare dma_map_ops to conversion to physical address Leon Romanovsky
2025-10-15 9:12 ` [PATCH v5 02/14] dma-mapping: convert dummy ops to physical address mapping Leon Romanovsky
2025-10-15 9:12 ` [PATCH v5 03/14] ARM: dma-mapping: Reduce struct page exposure in arch_sync_dma*() Leon Romanovsky
2025-10-15 9:12 ` [PATCH v5 04/14] ARM: dma-mapping: Switch to physical address mapping callbacks Leon Romanovsky
2025-10-15 9:12 ` [PATCH v5 05/14] xen: swiotlb: " Leon Romanovsky
2025-10-15 9:12 ` [PATCH v5 06/14] dma-mapping: remove unused mapping resource callbacks Leon Romanovsky
2025-10-15 9:12 ` [PATCH v5 07/14] alpha: Convert mapping routine to rely on physical address Leon Romanovsky
2025-10-15 9:12 ` [PATCH v5 08/14] MIPS/jazzdma: Provide physical address directly Leon Romanovsky
2025-10-15 9:12 ` [PATCH v5 09/14] parisc: Convert DMA map_page to map_phys interface Leon Romanovsky
2025-12-17 12:17 ` [PATCH v5 09/14] parisc: Convert DMA map_page to map_phys interface [qemu test failure] Guenter Roeck
2025-12-18 8:40 ` Leon Romanovsky
2025-12-18 12:11 ` Leon Romanovsky
2025-10-15 9:12 ` [PATCH v5 10/14] powerpc: Convert to physical address DMA mapping Leon Romanovsky
2025-11-14 9:02 ` Christophe Leroy
2025-10-15 9:12 ` [PATCH v5 11/14] sparc: Use " Leon Romanovsky
2026-02-17 12:27 ` John Paul Adrian Glaubitz
2026-02-17 12:55 ` Marek Szyprowski
2026-02-17 13:15 ` Leon Romanovsky
2026-02-17 13:57 ` John Paul Adrian Glaubitz
2025-10-15 9:12 ` [PATCH v5 12/14] x86: Use physical address for " Leon Romanovsky
2025-10-15 9:12 ` Leon Romanovsky [this message]
2025-10-15 9:13 ` [PATCH v5 14/14] dma-mapping: remove unused map_page callback Leon Romanovsky
2025-10-20 16:27 ` [PATCH v5 00/14] Remove DMA map_page/map_resource and their unmap callbacks Marek Szyprowski
2025-10-26 7:38 ` Leon Romanovsky
2025-10-29 10:00 ` Marek Szyprowski
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