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gralloc: Clean pmem caches after memset

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Change-Id: If403dde70863e0d6ea221f2a105b86bdec134261
This commit is contained in:
Naseer Ahmed 2011-07-29 09:42:07 +05:30 committed by Govind Surti
parent f979fa8589
commit 3de087d0bb
3 changed files with 11 additions and 0 deletions
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8
libgralloc-qsd8k/gralloc.cpp
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@ -108,6 +108,14 @@ class PmemAllocatorDepsDeviceImpl : public PmemUserspaceAllocator::Deps,
return ioctl(fd, PMEM_ALLOCATE_ALIGNED, &allocation);
}
virtual int cleanPmem(int fd, unsigned long base, int offset, size_t size) {
struct pmem_addr pmem_addr;
pmem_addr.vaddr = base;
pmem_addr.offset = offset;
pmem_addr.length = size;
return ioctl(fd, PMEM_CLEAN_INV_CACHES, &pmem_addr);
}
virtual int getErrno() {
return errno;
}

2
libgralloc-qsd8k/pmemalloc.cpp
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@ -181,6 +181,8 @@ int PmemUserspaceAllocator::alloc_pmem_buffer(size_t size, int usage,
} else {
LOGV("%s: mapped fd %d at offset %d, size %d", pmemdev, fd, offset, size);
memset((char*)base + offset, 0, size);
//Clean cache before flushing to ensure pmem is properly flushed
deps.cleanPmem(fd, (unsigned long) base, offset, size);
#ifdef HOST
cacheflush(intptr_t(base) + offset, intptr_t(base) + offset + size, 0);
#endif

1
libgralloc-qsd8k/pmemalloc.h
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@ -69,6 +69,7 @@ class PmemUserspaceAllocator: public PmemAllocator {
virtual int connectPmem(int fd, int master_fd) = 0;
virtual int mapPmem(int fd, int offset, size_t size) = 0;
virtual int unmapPmem(int fd, int offset, size_t size) = 0;
virtual int cleanPmem(int fd, unsigned long base, int offset, size_t size) = 0;
// C99
virtual int getErrno() = 0;