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dart: Add checks to dart_translate_internal()

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Previous assumptions are not longer true with dart8110 on M2.

Signed-off-by: Janne Grunau <j@jannau.net>
This commit is contained in:
Janne Grunau 2023-01-25 17:20:45 +01:00 committed by Hector Martin
parent c3c29bbd92
commit 93abc760b2
1 changed files with 10 additions and 0 deletions
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10
src/dart.c
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@ -587,6 +587,16 @@ static void *dart_translate_internal(dart_dev_t *dart, uintptr_t iova, int silen
u32 ttbr = (iova >> 36) & 0x3;
u32 l1_index = (iova >> 25) & 0x7ff;
if ((int)ttbr >= dart->params->ttbr_count) {
printf("dart[%lx %u]: ttbr out of range: %d\n", dart->regs, dart->device, ttbr);
return NULL;
}
if (!dart->l1[ttbr]) {
printf("dart[%lx %u]: l1[%u] is not set\n", dart->regs, dart->device, ttbr);
return NULL;
}
if (!(dart->l1[ttbr][l1_index] & DART_PTE_VALID) && !silent) {
printf("dart[%lx %u]: l1 translation failure %x %lx\n", dart->regs, dart->device, l1_index,
iova);