summaryrefslogtreecommitdiff
path: root/drivers/misc/habanalabs/pci.c
AgeCommit message (Collapse)Author
2019-05-13habanalabs: increase PCI ELBI timeout for PalladiumOmer Shpigelman
This patch increases the timeout for PCI ELBI configuration to support low frequency Palladium images. Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2019-05-01habanalabs: Manipulate DMA addresses in ASIC functionsTomer Tayar
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>
2019-04-28habanalabs: return old dram bar address upon changeOded Gabbay
This patch changes the ASIC interface function that changes the DRAM bar window. The change is to return the old address that the DRAM bar pointed to instead of an error code. This simplifies the code that use this function (mainly in debugfs) to restore the bar to the old setting. This is also needed for easier support in future ASICs. Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2019-03-07habanalabs: keep track of the device's dma maskOded Gabbay
This patch refactors the code that is responsible to set the DMA mask for the device. Upon each change of the dma mask, the driver will save the new value that was set. This is needed in order to make sure we don't try to increase the mask a second time, in case we failed in the first time. This is especially relevant for Power machines, as that may cause a change in configuration of the TVT which will break the device. Goya will first try to set the device's dma mask to 39 bits, so that the memory that is allocated on the host machine for communication with the device's cpu will be in a bus address which is lower then 39 bits. Later, Goya will try to increase that mask to 48 bits, but only if setting the mask to 39 bits was successful. Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2019-03-05habanalabs: Move PCI code into common fileTomer Tayar
Move duplicated PCI-related code from ASIC-specific files into the common pci.c file. Signed-off-by: Tomer Tayar <ttayar@habana.ai> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>