[v9] Add AMD MDB Endpoint and non-LL mode Support

[PATCH v9 0/2] Add AMD MDB Endpoint and non-LL mode Support

Devendra K Verma posted 2 patches 2 weeks, 5 days ago

Diff against v1 v1 v2 v3 v4 v4 v4 v5 v6 v6 v6 v7 v8 v10
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There is a newer version of this series

drivers/dma/dw-edma/dw-edma-core.c    |  42 ++++-
drivers/dma/dw-edma/dw-edma-core.h    |   1 +
drivers/dma/dw-edma/dw-edma-pcie.c    | 223 +++++++++++++++++++++++---
drivers/dma/dw-edma/dw-hdma-v0-core.c |  61 ++++++-
drivers/dma/dw-edma/dw-hdma-v0-regs.h |   1 +
include/linux/dma/edma.h              |   1 +
6 files changed, 303 insertions(+), 26 deletions(-)

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[PATCH v9 0/2] Add AMD MDB Endpoint and non-LL mode Support

Posted by Devendra K Verma 2 weeks, 5 days ago

This series of patch support the following:

 - AMD MDB Endpoint Support, as part of this patch following are
   added:
   o AMD supported device ID and vendor ID (Xilinx)
   o AMD MDB specific driver data
   o AMD specific VSEC capabilities to retrieve the base of
     phys address of MDB side DDR
   o Logic to assign the offsets to LL and data blocks if
     more number of channels are enabled than configured
     in the given pci_data struct.

 - Addition of non-LL mode
   o The IP supported non-LL mode functions
   o Flexibility to choose non-LL mode via dma_slave_config
     param peripheral_config, by the client for all the vendors
     using HDMA IP.
   o Allow IP utilization if LL mode is not available

Devendra K Verma (2):
  dmaengine: dw-edma: Add AMD MDB Endpoint Support
  dmaengine: dw-edma: Add non-LL mode

 drivers/dma/dw-edma/dw-edma-core.c    |  42 ++++-
 drivers/dma/dw-edma/dw-edma-core.h    |   1 +
 drivers/dma/dw-edma/dw-edma-pcie.c    | 223 +++++++++++++++++++++++---
 drivers/dma/dw-edma/dw-hdma-v0-core.c |  61 ++++++-
 drivers/dma/dw-edma/dw-hdma-v0-regs.h |   1 +
 include/linux/dma/edma.h              |   1 +
 6 files changed, 303 insertions(+), 26 deletions(-)

-- 
2.43.0

Re: [PATCH v9 0/2] Add AMD MDB Endpoint and non-LL mode Support

Posted by Frank Li 2 weeks, 2 days ago

On Mon, Jan 19, 2026 at 02:40:07PM +0530, Devendra K Verma wrote:
> This series of patch support the following:
>
>  - AMD MDB Endpoint Support, as part of this patch following are
>    added:
>    o AMD supported device ID and vendor ID (Xilinx)
>    o AMD MDB specific driver data
>    o AMD specific VSEC capabilities to retrieve the base of
>      phys address of MDB side DDR
>    o Logic to assign the offsets to LL and data blocks if
>      more number of channels are enabled than configured
>      in the given pci_data struct.
>
>  - Addition of non-LL mode
>    o The IP supported non-LL mode functions
>    o Flexibility to choose non-LL mode via dma_slave_config
>      param peripheral_config, by the client for all the vendors
>      using HDMA IP.
>    o Allow IP utilization if LL mode is not available
>
> Devendra K Verma (2):
>   dmaengine: dw-edma: Add AMD MDB Endpoint Support
>   dmaengine: dw-edma: Add non-LL mode

There are open discussion at v8. Please give me some time to reply your
email before post new version.

Frank

>
>  drivers/dma/dw-edma/dw-edma-core.c    |  42 ++++-
>  drivers/dma/dw-edma/dw-edma-core.h    |   1 +
>  drivers/dma/dw-edma/dw-edma-pcie.c    | 223 +++++++++++++++++++++++---
>  drivers/dma/dw-edma/dw-hdma-v0-core.c |  61 ++++++-
>  drivers/dma/dw-edma/dw-hdma-v0-regs.h |   1 +
>  include/linux/dma/edma.h              |   1 +
>  6 files changed, 303 insertions(+), 26 deletions(-)
>
> --
> 2.43.0
>