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sio: Allocate from top of memory

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Place the firmware data we are preparing at the top of memory.

Signed-off-by: Martin Povišer <povik@cutebit.org>
This commit is contained in:
Martin Povišer 2023-02-22 15:25:18 +01:00 committed by Hector Martin
parent fa820a7164
commit 8824bd2dbf
1 changed files with 4 additions and 2 deletions
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6
src/sio.c
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@ -42,7 +42,7 @@ static void *alloc_mapped_data(size_t size, u64 *iova)
else else
mapping->iova = *iova = ALIGN_UP((mapping - 1)->iova + (mapping - 1)->size, SZ_16K); mapping->iova = *iova = ALIGN_UP((mapping - 1)->iova + (mapping - 1)->size, SZ_16K);
mapping->size = ALIGN_UP(size, SZ_4K); mapping->size = ALIGN_UP(size, SZ_4K);
mapping->phys = (u64)memalign(SZ_16K, ALIGN_UP(size, SZ_16K)); mapping->phys = top_of_memory_alloc(size);
memset64((void *)mapping->phys, 0, ALIGN_UP(mapping->size, SZ_16K)); memset64((void *)mapping->phys, 0, ALIGN_UP(mapping->size, SZ_16K));
done: done:
@ -211,7 +211,9 @@ err:
for (int i = 0; i < MAX_FWDATA; i++) { for (int i = 0; i < MAX_FWDATA; i++) {
if (!sio_fwdata[i].size) if (!sio_fwdata[i].size)
break; break;
free((void *)sio_fwdata[i].phys); // No way to give back memory with the top of memory
// allocator.
// free((void *)sio_fwdata[i].phys);
} }
free(sio_fwdata); free(sio_fwdata);
free(sio_fwparams); free(sio_fwparams);