| Age | Commit message (Collapse) | Author | Files | Lines |
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Clean up the existing export namespace code along the same lines of
commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo)
to __section("foo")") and for the same reason, it is not desired for the
namespace argument to be a macro expansion itself.
Scripted using
git grep -l -e MODULE_IMPORT_NS -e EXPORT_SYMBOL_NS | while read file;
do
awk -i inplace '
/^#define EXPORT_SYMBOL_NS/ {
gsub(/__stringify\(ns\)/, "ns");
print;
next;
}
/^#define MODULE_IMPORT_NS/ {
gsub(/__stringify\(ns\)/, "ns");
print;
next;
}
/MODULE_IMPORT_NS/ {
$0 = gensub(/MODULE_IMPORT_NS\(([^)]*)\)/, "MODULE_IMPORT_NS(\"\\1\")", "g");
}
/EXPORT_SYMBOL_NS/ {
if ($0 ~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+),/) {
if ($0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/ &&
$0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(\)/ &&
$0 !~ /^my/) {
getline line;
gsub(/[[:space:]]*\\$/, "");
gsub(/[[:space:]]/, "", line);
$0 = $0 " " line;
}
$0 = gensub(/(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/,
"\\1(\\2, \"\\3\")", "g");
}
}
{ print }' $file;
done
Requested-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://mail.google.com/mail/u/2/#inbox/FMfcgzQXKWgMmjdFwwdsfgxzKpVHWPlc
Acked-by: Greg KH <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The DMA unmap API is not supposed to return value. Thus this patch
changes the ipu6_mmu_unmap() as a void function and DMA unmapping
didn't check the return value.
Signed-off-by: Bingbu Cao <bingbu.cao@intel.com>
[Sakari Ailus: Drop unnecessary returns.]
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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The MMU mapping flow is optimized for improve the performance, the
unmapping flow could also be optimized to follow same flow.
Signed-off-by: Bingbu Cao <bingbu.cao@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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ipu6_mmu_map() operated on a per-page basis, it leads frequent
spin_lock/unlock() and clflush_cache_range() for each page, it
will cause inefficiencies especially when handling dma-bufs
with large number of pages. However, the pages are likely concentrated
pages by IOMMU DMA driver, IPU MMU driver can map the concentrated
pages into less entries in l1 table.
This change enhances ipu6_mmu_map() with batching process multiple
contiguous pages. It significantly reduces calls for spin_lock/unlock
and clflush_cache_range() and improve the performance.
Signed-off-by: Bingbu Cao <bingbu.cao@intel.com>
Signed-off-by: Jianhui Dai <jianhui.j.dai@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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l2_map() and l2_unmap() are better to be grouped together.
l2_unmap() will soon be called from l2_map() for mapping
optimization.
Signed-off-by: Bingbu Cao <bingbu.cao@intel.com>
Signed-off-by: Jianhui Dai <jianhui.j.dai@intel.com>
[Sakari Ailus: Rebase on debug print fixes on 32-bit.]
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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Use PFN_UP() and sg_virt() can be used to simplify the code.
Signed-off-by: Bingbu Cao <bingbu.cao@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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Fix printing DMA and physical address printing on 32-bit platforms, by
using correct types. Also cast DMA_BIT_MASK() result to dma_addr_t to make
Clang happy.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Bingbu Cao <bingbu.cao@intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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linux/vmalloc.h needs to be included explicitly nowadays. Do it.
Link: https://lore.kernel.org/linux-media/20240507123528.932421-1-sakari.ailus@linux.intel.com
Fixes: 9163d83573e4 ("media: intel/ipu6: add IPU6 DMA mapping API and MMU table")
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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The Intel IPU6 has internal microcontrollers (scalar processor, SP) which
are used to execute the firmware. The SPs can access IPU internal memory
and system DRAM mapped to its an internal 32-bit virtual address space.
This patch adds a driver for the IPU MMU and a DMA mapping implementation
using the internal MMU. The system IOMMU may be used besides the IPU MMU.
Signed-off-by: Bingbu Cao <bingbu.cao@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
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