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: benh@kernel.crashing.org, paulus@samba.org,
"list@263.net:IOMMU DRIVERS" <iommu@lists.linux-foundation.org>,
sstabellini@kernel.org, Robin Murphy <robin.murphy@arm.com>,
grant.likely@arm.com, xypron.glpk@gmx.de,
Thierry Reding <treding@nvidia.com>,
mingo@kernel.org, bauerman@linux.ibm.com, peterz@infradead.org,
Greg KH <gregkh@linuxfoundation.org>,
Saravana Kannan <saravanak@google.com>,
"Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
heikki.krogerus@linux.intel.com,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Randy Dunlap <rdunlap@infradead.org>,
Dan Williams <dan.j.williams@intel.com>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
linux-devicetree <devicetree@vger.kernel.org>,
lkml <linux-kernel@vger.kernel.org>,
linuxppc-dev@lists.ozlabs.org, xen-devel@lists.xenproject.org,
Nicolas Boichat <drinkcat@chromium.org>,
Jim Quinlan <james.quinlan@broadcom.com>,
tfiga@chromium.org, bskeggs@redhat.com, bhelgaas@google.com,
chris@chris-wilson.co.uk, tientzu@chromium.org, daniel@ffwll.ch,
airlied@linux.ie, dri-devel@lists.freedesktop.org,
intel-gfx@lists.freedesktop.org, jani.nikula@linux.intel.com,
jxgao@google.com, joonas.lahtinen@linux.intel.com,
linux-pci@vger.kernel.org, maarten.lankhorst@linux.intel.com,
matthew.auld@intel.com, rodrigo.vivi@intel.com,
thomas.hellstrom@linux.intel.com
Subject: [PATCH v8 09/15] swiotlb: Move alloc_size to find_slots
Date: Thu, 27 May 2021 20:58:39 +0800 [thread overview]
Message-ID: <20210527125845.1852284-10-tientzu@chromium.org> (raw)
In-Reply-To: <20210527125845.1852284-1-tientzu@chromium.org>
Move the maintenance of alloc_size to find_slots for better code
reusability later.
Signed-off-by: Claire Chang <tientzu@chromium.org>
---
kernel/dma/swiotlb.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index fa7f23fffc81..88b3471ac6a8 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -482,8 +482,11 @@ static int find_slots(struct device *dev, phys_addr_t orig_addr,
return -1;
found:
- for (i = index; i < index + nslots; i++)
+ for (i = index; i < index + nslots; i++) {
mem->slots[i].list = 0;
+ mem->slots[i].alloc_size =
+ alloc_size - ((i - index) << IO_TLB_SHIFT);
+ }
for (i = index - 1;
io_tlb_offset(i) != IO_TLB_SEGSIZE - 1 &&
mem->slots[i].list; i--)
@@ -538,11 +541,8 @@ phys_addr_t swiotlb_tbl_map_single(struct device *dev, phys_addr_t orig_addr,
* This is needed when we sync the memory. Then we sync the buffer if
* needed.
*/
- for (i = 0; i < nr_slots(alloc_size + offset); i++) {
+ for (i = 0; i < nr_slots(alloc_size + offset); i++)
mem->slots[index + i].orig_addr = slot_addr(orig_addr, i);
- mem->slots[index + i].alloc_size =
- alloc_size - (i << IO_TLB_SHIFT);
- }
tlb_addr = slot_addr(mem->start, index) + offset;
if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC) &&
(dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL))
--
2.31.1.818.g46aad6cb9e-goog
next prev parent reply other threads:[~2021-05-27 13:00 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-27 12:58 [PATCH v8 00/15] Restricted DMA Claire Chang
2021-05-27 12:58 ` [PATCH v8 01/15] swiotlb: Refactor swiotlb init functions Claire Chang
2021-05-27 12:58 ` [PATCH v8 02/15] swiotlb: Refactor swiotlb_create_debugfs Claire Chang
2021-05-27 12:58 ` [PATCH v8 03/15] swiotlb: Add DMA_RESTRICTED_POOL Claire Chang
2021-05-27 12:58 ` [PATCH v8 04/15] swiotlb: Add restricted DMA pool initialization Claire Chang
2021-05-27 12:58 ` [PATCH v8 05/15] swiotlb: Add a new get_io_tlb_mem getter Claire Chang
2021-05-27 12:58 ` [PATCH v8 06/15] swiotlb: Update is_swiotlb_buffer to add a struct device argument Claire Chang
2021-05-27 12:58 ` [PATCH v8 07/15] swiotlb: Update is_swiotlb_active " Claire Chang
2021-05-27 12:58 ` [PATCH v8 08/15] swiotlb: Bounce data from/to restricted DMA pool if available Claire Chang
2021-05-27 12:58 ` Claire Chang [this message]
2021-05-27 12:58 ` [PATCH v8 10/15] swiotlb: Refactor swiotlb_tbl_unmap_single Claire Chang
2021-05-27 13:32 ` [PATCH v8 00/15] Restricted DMA Christoph Hellwig
2021-06-04 17:48 ` Will Deacon
2021-06-07 3:28 ` Claire Chang
2021-06-11 15:31 ` Claire Chang
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