user/sven/linux.git/include/linux/nvme.h, branch v4.7

NVMe: correct comment for offset enum of controller registers in nvme.h

2016-05-02T15:13:35Z

Section 3.1 gives the comment for the offset of controller registers in the specification 1.2a. Some are mis-copied in the header file nvme.h. Correct them. Signed-off-by: Wang Sheng-Hui Reviewed-by: Christoph Hellwig Reviewed-by: Sagi Grimberg Signed-off-by: Jens Axboe

nvme: use offset instead of a struct for registers

2015-12-01T17:59:38Z

This makes life easier for future non-PCI drivers where access to the registers might be more complicated. Note that Linux drivers are pretty evenly split between the two versions, and in fact the NVMe driver already uses offsets for the doorbells. Signed-off-by: Christoph Hellwig Acked-by: Keith Busch [Fixed CMBSZ offset] Signed-off-by: Keith Busch Signed-off-by: Jens Axboe

nvme: include in

2015-10-09T16:40:37Z

The buildbot complains about this even if it doesn't generate a a build warning. But it's an easy fix, so here we go: Reported-by: kbuild test robot Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe

nvme.h: add missing nvme_id_ctrl endianess annotations

2015-10-09T16:40:37Z

Signed-off-by: Christoph Hellwig Acked-by: Keith Busch Signed-off-by: Jens Axboe

nvme: move hardware structures out of the uapi version of nvme.h

2015-10-09T16:40:37Z

Currently all NVMe command and completion structures are exposed to userspace through the uapi version of nvme.h. They are not an ABI between the kernel and userspace, and will change in C-incompatible way for future versions of the spec. Move them to the kernel version of the file and rename the uapi header to nvme_ioctl.h so that userspace can easily detect the presence of the new clean header. Nvme-cli already carries a local copy of the header, so it won't be affected by this move. Signed-off-by: Christoph Hellwig Acked-by: Keith Busch Signed-off-by: Jens Axboe

nvme: add a local nvme.h header

2015-10-09T16:40:37Z

Add a new drivers/block/nvme.h which contains all the driver internal interface. Signed-off-by: Christoph Hellwig Acked-by: Keith Busch Signed-off-by: Jens Axboe

NVMe: Simplify device resume on io queue failure

2015-10-09T16:40:36Z

Releasing IO queues and disks was done in a work queue outside the controller resume context to delete namespaces if the controller failed after a resume from suspend. This is unnecessary since we can resume a device asynchronously. This patch makes resume use probe_work so it can directly remove namespaces if the device is manageable but not IO capable. Since the deleting disks was the only reason we had the convoluted "reset_workfn", this patch removes that unnecessary indirection. Signed-off-by: Keith Busch Reviewed-by: Christoph Hellwig Signed-off-by: Jens Axboe

NVMe: Reference count open namespaces

2015-10-09T16:40:36Z

Dynamic namespace attachment means the namespace may be removed at any time, so the namespace reference count can not be tied to the device reference count. This fixes a NULL dereference if an opened namespace is detached from a controller. Signed-off-by: Keith Busch Reviewed-by: Christoph Hellwig Signed-off-by: Jens Axboe

NVMe: Add nvme subsystem reset IOCTL

2015-08-18T17:56:13Z

Controllers can perform optional subsystem resets as introduced in NVMe 1.1. This patch adds an IOCTL to trigger the subsystem reset by writing "NVMe" to the NSSR register. Signed-off-by: Jon Derrick Acked-by: Keith Busch Signed-off-by: Jens Axboe

NVMe: Add nvme subsystem reset support

2015-08-18T17:56:11Z

Controllers part of an NVMe subsystem may be reset by any other controller in the subsystem. If the device is capable of subsystem resets, this patch adds detection for such events and performs appropriate controller initialization upon subsystem reset detection. The register bit is a RW1C type, so the driver needs to write a 1 to the status bit to clear the subsystem reset occured bit during initialization. Signed-off-by: Keith Busch Signed-off-by: Jens Axboe