From: Claire Chang <tientzu@chromium.org>
To: Rob Herring <robh+dt@kernel.org>,
mpe@ellerman.id.au, Joerg Roedel <joro@8bytes.org>,
Will Deacon <will@kernel.org>,
Frank Rowand <frowand.list@gmail.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
boris.ostrovsky@oracle.com, jgross@suse.com,
Christoph Hellwig <hch@lst.de>,
Marek Szyprowski <m.szyprowski@samsung.com>
Cc: heikki.krogerus@linux.intel.com, peterz@infradead.org,
benh@kernel.crashing.org, grant.likely@arm.com, paulus@samba.org,
mingo@kernel.org, sstabellini@kernel.org,
Saravana Kannan <saravanak@google.com>,
xypron.glpk@gmx.de,
"Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
xen-devel@lists.xenproject.org,
Thierry Reding <treding@nvidia.com>,
linux-devicetree <devicetree@vger.kernel.org>,
linuxppc-dev@lists.ozlabs.org,
Nicolas Boichat <drinkcat@chromium.org>,
Claire Chang <tientzu@chromium.org>,
Dan Williams <dan.j.williams@intel.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Greg KH <gregkh@linuxfoundation.org>,
Randy Dunlap <rdunlap@infradead.org>,
lkml <linux-kernel@vger.kernel.org>,
"list@263.net:IOMMU DRIVERS" <iommu@lists.linux-foundation.org>,
Jim Quinlan <james.quinlan@broadcom.com>,
Robin Murphy <robin.murphy@arm.com>
Subject: [PATCH v4 10/14] dma-direct: Add a new wrapper __dma_direct_free_pages()
Date: Tue, 9 Feb 2021 14:21:27 +0800 [thread overview]
Message-ID: <20210209062131.2300005-11-tientzu@chromium.org> (raw)
In-Reply-To: <20210209062131.2300005-1-tientzu@chromium.org>
Add a new wrapper __dma_direct_free_pages() that will be useful later
for dev_swiotlb_free().
Signed-off-by: Claire Chang <tientzu@chromium.org>
---
kernel/dma/direct.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
index 30ccbc08e229..a76a1a2f24da 100644
--- a/kernel/dma/direct.c
+++ b/kernel/dma/direct.c
@@ -75,6 +75,11 @@ static bool dma_coherent_ok(struct device *dev, phys_addr_t phys, size_t size)
min_not_zero(dev->coherent_dma_mask, dev->bus_dma_limit);
}
+static void __dma_direct_free_pages(struct device *dev, struct page *page, size_t size)
+{
+ dma_free_contiguous(dev, page, size);
+}
+
static struct page *__dma_direct_alloc_pages(struct device *dev, size_t size,
gfp_t gfp)
{
@@ -237,7 +242,7 @@ void *dma_direct_alloc(struct device *dev, size_t size,
return NULL;
}
out_free_pages:
- dma_free_contiguous(dev, page, size);
+ __dma_direct_free_pages(dev, page, size);
return NULL;
}
@@ -273,7 +278,7 @@ void dma_direct_free(struct device *dev, size_t size,
else if (IS_ENABLED(CONFIG_ARCH_HAS_DMA_CLEAR_UNCACHED))
arch_dma_clear_uncached(cpu_addr, size);
- dma_free_contiguous(dev, dma_direct_to_page(dev, dma_addr), size);
+ __dma_direct_free_pages(dev, dma_direct_to_page(dev, dma_addr), size);
}
struct page *dma_direct_alloc_pages(struct device *dev, size_t size,
@@ -310,7 +315,7 @@ struct page *dma_direct_alloc_pages(struct device *dev, size_t size,
*dma_handle = phys_to_dma_direct(dev, page_to_phys(page));
return page;
out_free_pages:
- dma_free_contiguous(dev, page, size);
+ __dma_direct_free_pages(dev, page, size);
return NULL;
}
@@ -329,7 +334,7 @@ void dma_direct_free_pages(struct device *dev, size_t size,
if (force_dma_unencrypted(dev))
set_memory_encrypted((unsigned long)vaddr, 1 << page_order);
- dma_free_contiguous(dev, page, size);
+ __dma_direct_free_pages(dev, page, size);
}
#if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE) || \
--
2.30.0.478.g8a0d178c01-goog
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next prev parent reply other threads:[~2021-02-09 6:23 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-09 6:21 [PATCH v4 00/14] Restricted DMA Claire Chang
2021-02-09 6:21 ` [PATCH v4 01/14] swiotlb: Remove external access to io_tlb_start Claire Chang
2021-02-09 6:21 ` [PATCH v4 03/14] swiotlb: Add struct swiotlb Claire Chang
2021-02-09 6:21 ` [PATCH v4 04/14] swiotlb: Refactor swiotlb_late_init_with_tbl Claire Chang
2021-02-09 6:21 ` [PATCH v4 06/14] swiotlb: Add restricted DMA pool Claire Chang
2021-02-09 6:21 ` [PATCH v4 07/14] swiotlb: Update swiotlb API to gain a struct device argument Claire Chang
2021-02-09 6:21 ` [PATCH v4 09/14] swiotlb: Refactor swiotlb_tbl_{map,unmap}_single Claire Chang
2021-02-09 6:21 ` Claire Chang [this message]
2021-02-09 6:21 ` [PATCH v4 11/14] swiotlb: Add is_dev_swiotlb_force() Claire Chang
2021-02-09 6:21 ` [PATCH v4 12/14] swiotlb: Add restricted DMA alloc/free support Claire Chang
2021-02-26 4:17 ` Claire Chang
2021-02-26 5:17 ` Christoph Hellwig
2021-02-26 9:35 ` Claire Chang
2021-02-09 6:21 ` [PATCH v4 13/14] dt-bindings: of: Add restricted DMA pool Claire Chang
2021-03-10 16:07 ` Will Deacon
2021-03-10 21:40 ` Rob Herring
2021-03-11 5:04 ` Florian Fainelli
2021-04-22 8:20 ` [PATCH v4 00/14] Restricted DMA Claire Chang
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