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accel/habanalabs: fix DRAM BAR base address calculation

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When the DRAM region size in the BAR is not a power of 2, calculating
the corresponding BAR base address should be done using the offset from
the DRAM start address, and not using directly the DRAM address.

Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Tomer Tayar 2023-12-14 10:38:06 +02:00 committed by Oded Gabbay
parent 8c075401f2
commit d0df8a35a7
1 changed files with 2 additions and 1 deletions
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3
drivers/accel/habanalabs/common/device.c
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@ -55,7 +55,8 @@ static u64 hl_set_dram_bar(struct hl_device *hdev, u64 addr, struct pci_mem_regi
if (is_power_of_2(prop->dram_pci_bar_size))
bar_base_addr = addr & ~(prop->dram_pci_bar_size - 0x1ull);
else
bar_base_addr = DIV_ROUND_DOWN_ULL(addr, prop->dram_pci_bar_size) *
bar_base_addr = region->region_base +
div64_u64((addr - region->region_base), prop->dram_pci_bar_size) *
prop->dram_pci_bar_size;
old_base = hdev->asic_funcs->set_dram_bar_base(hdev, bar_base_addr);