diff options
| author | Tomer Tayar <ttayar@habana.ai> | 2019-05-01 11:28:15 +0300 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2019-05-01 11:28:15 +0300 |
| commit | 94cb669ceb0589f24ee91e3a8ae8ed3013fd6904 (patch) | |
| tree | 3935e4e2ee9292e99df4aaacee3adf08d6a8423b /drivers/misc/habanalabs/memory.c | |
| parent | d9c3aa8038c391f38a391289989ca0ac356a9501 (diff) | |
| download | linux-94cb669ceb0589f24ee91e3a8ae8ed3013fd6904.tar.xz | |
habanalabs: Manipulate DMA addresses in ASIC functions
Routing device accesses to the host memory requires the usage of a base
offset, which is canceled by the iATU just before leaving the device.
The value of the base offset might be distinctive between different ASIC
types.
The manipulation of the addresses is currently used throughout the
driver code, and one should be aware to it whenever providing a host
memory address to the device.
This patch removes this manipulation from the driver common code, and
moves it to the ASIC specific functions that are responsible for
host memory allocation/mapping.
Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/misc/habanalabs/memory.c')
| -rw-r--r-- | drivers/misc/habanalabs/memory.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/misc/habanalabs/memory.c b/drivers/misc/habanalabs/memory.c index 43ef3ad8438a..d67d24c13efd 100644 --- a/drivers/misc/habanalabs/memory.c +++ b/drivers/misc/habanalabs/memory.c @@ -759,10 +759,6 @@ static int map_phys_page_pack(struct hl_ctx *ctx, u64 vaddr, for (i = 0 ; i < phys_pg_pack->npages ; i++) { paddr = phys_pg_pack->pages[i]; - /* For accessing the host we need to turn on bit 39 */ - if (phys_pg_pack->created_from_userptr) - paddr += hdev->asic_prop.host_phys_base_address; - rc = hl_mmu_map(ctx, next_vaddr, paddr, page_size); if (rc) { dev_err(hdev->dev, |