diff options
| author | Oded Gabbay <ogabbay@kernel.org> | 2021-07-10 21:12:45 +0300 |
|---|---|---|
| committer | Oded Gabbay <ogabbay@kernel.org> | 2021-08-29 09:47:47 +0300 |
| commit | 2b5bbef5e88c6ffce59f935417e9b729afb44756 (patch) | |
| tree | 9afbee74731744eeac56f87adcb250d97c8c9e57 /drivers/misc | |
| parent | d18bf13e225258b6ee5325fc7cce48059c7b871f (diff) | |
| download | linux-2b5bbef5e88c6ffce59f935417e9b729afb44756.tar.xz | |
habanalabs: add asic property of host dma offset
Each ASIC can have a different offset to add to a host dma address,
to enable the ASIC to access that host memory.
The usage for this can be common code so add this to the asic
property structure.
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/habanalabs/common/habanalabs.h | 3 | ||||
| -rw-r--r-- | drivers/misc/habanalabs/gaudi/gaudi.c | 1 | ||||
| -rw-r--r-- | drivers/misc/habanalabs/goya/goya.c | 1 |
3 files changed, 5 insertions, 0 deletions
diff --git a/drivers/misc/habanalabs/common/habanalabs.h b/drivers/misc/habanalabs/common/habanalabs.h index 6affad6bc1b9..9782bb50931a 100644 --- a/drivers/misc/habanalabs/common/habanalabs.h +++ b/drivers/misc/habanalabs/common/habanalabs.h @@ -434,6 +434,8 @@ struct hl_hints_range { * the device's MMU. * @dram_hints_align_mask: dram va hint addresses alignment mask which is used * for hints validity check. + * device_dma_offset_for_host_access: the offset to add to host DMA addresses + * to enable the device to access them. * @mmu_pgt_size: MMU page tables total size. * @mmu_pte_size: PTE size in MMU page tables. * @mmu_hop_table_size: MMU hop table size. @@ -527,6 +529,7 @@ struct asic_fixed_properties { u64 cb_va_start_addr; u64 cb_va_end_addr; u64 dram_hints_align_mask; + u64 device_dma_offset_for_host_access; u32 mmu_pgt_size; u32 mmu_pte_size; u32 mmu_hop_table_size; diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c index 14d0f6d9a383..fdbe8155ef3c 100644 --- a/drivers/misc/habanalabs/gaudi/gaudi.c +++ b/drivers/misc/habanalabs/gaudi/gaudi.c @@ -537,6 +537,7 @@ static int gaudi_set_fixed_properties(struct hl_device *hdev) get_collective_mode(hdev, i); } + prop->device_dma_offset_for_host_access = HOST_PHYS_BASE; prop->completion_queues_count = NUMBER_OF_CMPLT_QUEUES; prop->collective_first_sob = 0; prop->collective_first_mon = 0; diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c index 017c913f7b5a..ae9871928369 100644 --- a/drivers/misc/habanalabs/goya/goya.c +++ b/drivers/misc/habanalabs/goya/goya.c @@ -389,6 +389,7 @@ int goya_set_fixed_properties(struct hl_device *hdev) prop->hw_queues_props[i].cb_alloc_flags = CB_ALLOC_USER; } + prop->device_dma_offset_for_host_access = HOST_PHYS_BASE; prop->completion_queues_count = NUMBER_OF_CMPLT_QUEUES; prop->dram_base_address = DRAM_PHYS_BASE; |