We don't keep a list of nvme_dev any more
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

Allow userspace to submit synchronous I/O like the SCSI sg interface does.
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

These are generalisations of the code that was in
nvme_submit_user_admin_command().
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

Factor out most of nvme_identify() into a new nvme_submit_user_admin_command()
function.  Change nvme_get_range_type() to call it and change nvme_ioctl to
realise that it's getting back all 64 ranges.
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

Make sure there's no left-over bits set from previous commands that used
this slot.
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

Generalise the code from nvme_identify() that sets PRP1 & PRP2 so that
it's usable for commands sent by nvme_submit_bio_queue().
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

DMA the result straight to userspace instead of bounce-buffering in the
kernel.
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

The admin IRQ is supposed to use the pin-based (or single message MSI)
interrupt.  Accomplish this by filling in entry[0]'s vector with the
INTx irq number.
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

It's called the phase bit in the current draft
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

sq_count and cq_count are always the same, so just call it 'count'.
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

Two callers with an almost identical long string of arguments, and
introducing a third soon.  Time to factor out the commonalities.
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

This driver is for devices that follow the NVM Express standard
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>