kernel.git/drivers/crypto/ccp/ccp-dev.h, branch linux-4.10.y

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

2017-05-20T12:30:58Z

commit 7b537b24e76a1e8e6d7ea91483a45d5b1426809b upstream. 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. Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman

crypto: ccp - Use only the relevant interrupt bits

2017-05-20T12:30:58Z

commit 56467cb11cf8ae4db9003f54b3d3425b5f07a10a upstream. Each CCP queue can product interrupts for 4 conditions: operation complete, queue empty, error, and queue stopped. This driver only works with completion and error events. Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman

crypto: ccp - Make some CCP DMA channels private

2017-04-08T07:35:06Z

commit efc989fce8703914bac091dcc4b8ff7a72ccf987 upstream. The CCP registers its queues as channels capable of handling general DMA operations. The NTB driver will use DMA if directed, but as public channels can be reserved for use in asynchronous operations some channels should be held back as private. Since the public/private determination is handled at a device level, reserve the "other" (secondary) CCP channels as private. Add a module parameter that allows for override, to be applied to all channels on all devices. Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman

crypto: ccp - Fix double add when creating new DMA command

2017-02-03T09:45:46Z

Eliminate a double-add by creating a new list to manage command descriptors when created; move the descriptor to the pending list when the command is submitted. Cc: Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu

crypto: ccp - remove unneeded code

2016-10-25T03:08:21Z

Clean up patch for an unneeded structure member. Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu

crypto: ccp - change bitfield type to unsigned ints

2016-10-25T03:08:20Z

Bit fields are not sensitive to endianness, so use a transparent standard data type Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu

crypto: ccp - change type of struct member lsb to signed

2016-10-21T03:03:46Z

The lsb field uses a value of -1 to indicate that it is unassigned. Therefore type must be a signed int. 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 - Enable use of the additional CCP

2016-08-09T10:47:18Z

A second CCP is available, identical to the first, with its ownn PCI ID. Make it available for use by the crypto subsystem, as well as for DMA activity and random number generation. This device is not pre-configured at at boot time. The driver must configure it (during the probe) for use. Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu