kernel.git/drivers/crypto/ccp/ccp-dev-v3.c, branch linux-4.12.y

crypto: ccp - Change ISR handler method for a v3 CCP

2017-04-24T10:11:06Z

The CCP has the ability to perform several operations simultaneously, but only one interrupt. When implemented as a PCI device and using MSI-X/MSI interrupts, use a tasklet model to service interrupts. By disabling and enabling interrupts from the CCP, coupled with the queuing that tasklets provide, we can ensure that all events (occurring on the device) are recognized and serviced. This change fixes a problem wherein 2 or more busy queues can cause notification bits to change state while a (CCP) interrupt is being serviced, but after the queue state has been evaluated. This results in the event being 'lost' and the queue hanging, waiting to be serviced. Since the status bits are never fully de-asserted, the CCP never generates another interrupt (all bits zero -> one or more bits one), and no further CCP operations will be executed. Cc: # 4.9.x+ Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu

crypto: ccp - Enable 3DES function on v5 CCPs

2017-03-24T14:02:55Z

Wire up support for Triple DES in ECB mode. Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu

crypto: ccp - Clean up the LSB slot allocation code

2016-10-25T03:08:23Z

Fix a few problems revealed by testing: verify consistent units, especially in public slot allocation. Percolate some common initialization code up to a common routine. Add some comments. Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu

crypto: ccp - Make syslog errors human-readable

2016-10-02T14:33:45Z

Add human-readable strings to log messages about CCP errors Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu

crypto: ccp - clean up data structure

2016-10-02T14:33:44Z

Change names of data structure instances. Add const keyword where appropriate. Add error handling path. Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu

crypto: ccp - Add support for the RNG in a version 5 CCP

2016-08-09T10:47:17Z

Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu

crypto: ccp - Let a v5 CCP provide the same function as v3

2016-08-09T10:47:16Z

Enable equivalent function on a v5 CCP. Add support for a version 5 CCP which enables AES/XTS/SHA services. Also, more work on the data structures to virtualize functionality. Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu

crypto: ccp - Refactor code to enable checks for queue space.

2016-08-09T10:47:10Z

Available queue space is used to decide (by counting free slots) if we have to put a command on hold or if it can be sent to the engine immediately. Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu

crypto: ccp - Refactor code supporting the CCP's RNG

2016-08-09T10:47:09Z

Make the RNG support code common (where possible) in preparation for adding a v5 device. Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu

crypto: ccp - Refactor the storage block allocation code

2016-08-09T10:47:08Z

Move the KSB access/management functions to the v3 device file, and add function pointers to the actions structure. At the operations layer all of the references to the storage block will be generic (virtual). This is in preparation for a version 5 device, in which the private storage block is managed differently. Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu