[00/11] Add module parameters to control CCP activation
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Message ID 156140365456.116890.15736288493305066708.stgit@sosrh3.amd.com
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  • Add module parameters to control CCP activation
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Gary R Hook June 24, 2019, 7:28 p.m. UTC
Firstly, add a switch to allow/disallow debugfs code to be built
into the CCP driver.

This rest of the patch series implements a set of module parameters
that allow fine-tuned control over which CCPs on a system are enabled
by the driver, and how many queues on each device are activated.

Lastly, a switch to enable/disable DMA engine registration is implemented.

The new parameters are also exposed in DebugFS (when enabled).

Details:
nqueues: configure N queues per CCP (default: 0 - all queues enabled)
maxdev: maximum number of devices to enable (default: 0 - all devices activated)
pcidev: Only consider activating devices with the specified PCI ID (default: unset - all devices activated)
buses: Only consider activating devices on the specified PCI buses (default: unset - all devices activated)
dmareg: Register services with the DMA subsystem (default: true)

The maxdev, pcidev and buses parameters aggregate. 

Only activated devices will have their DMA services registered.

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Gary R Hook (11):
      crypto: ccp - Make CCP debugfs support optional
      crypto: ccp - Add a module parameter to specify a queue count
      crypto: ccp - Expose the value of nqueues in DebugFS
      crypto: ccp - module parameter to limit the number of enabled CCPs
      crypto: ccp - Expose maxdev through DebugFS
      crypto: ccp - Specify a single CCP via PCI device ID
      crypto: ccp - expose the pcidev module parameter in debugfs
      crypto: ccp - module parameter to allow CCP selection by PCI bus
      crypto: ccp - expose pcibus module parameter in debugfs
      crypto: ccp - Add a module parameter to control registration for DMA
      crypto: ccp - Expose the registerdma module parameter in DFS


 drivers/crypto/ccp/Kconfig       |    9 ++
 drivers/crypto/ccp/Makefile      |    4 -
 drivers/crypto/ccp/ccp-debugfs.c |    3 +
 drivers/crypto/ccp/ccp-dev-v5.c  |   24 ++++-
 drivers/crypto/ccp/ccp-dev.h     |   17 ++++
 drivers/crypto/ccp/sp-pci.c      |  172 ++++++++++++++++++++++++++++++++++++++
 6 files changed, 221 insertions(+), 8 deletions(-)

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