Re-organize code to have cq.c and wr.c with CQ and WR code, respectively.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>

Mana HW expects buffers to be a power of 2 and be at least 4KB.
The existing align_hw_size returns 1 when input is 0, providing
incorrect buffer size for empty queues.
Change the order of align and pow to get 4096 for the input 0,
which is expected by the HW.

Use uint32_t in the get_wqe_size helper.

Fixes: 443f196 ("mana: Microsoft Azure Network Adapter (MANA) RDMA provider")
Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>

Implement creation and destruction of RNIC cqs.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>

Implement writing to doorbells for different queue types.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>

Define struct for fields related to raw QPs.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>

Implement shadow queues to store pending WQEs.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>

Introduce helpers to work with PSNs.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>

Implement a table for finding QPs using receive queue ids.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>

Implement creation and destruction of RC QPs.
Add helpers to work with rollback memory regions.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>

Implement modify QP for RC QPs.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>

Implement work posting and define HW structures.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>

Implement polling of CQs and arming CQs.
Add processing of CQEs for RC QPs.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>