This patch correct the comment style errors caught by
checkpatch.pl script
Signed-off-by: NSalil Mehta  <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

This patch modified the output query info qp_attr->port_num
to fix bug in hip06.
Signed-off-by: NWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: NSalil Mehta  <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

This patch modified the macro for the timeout when cmd is
processing as follows:
Before modification:
 enum {
	HNS_ROCE_CMD_TIME_CLASS_A       = 10000,
	HNS_ROCE_CMD_TIME_CLASS_B       = 10000,
	HNS_ROCE_CMD_TIME_CLASS_C       = 10000,
 };
After modification:
 #define HNS_ROCE_CMD_TIMEOUT_MSECS	10000
Signed-off-by: NWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: NSalil Mehta  <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

In old code, the value of qp state from qpc was assigned for
attr->qp_state. The value may be an error while attr_mask &
IB_QP_STATE is zero.
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Reviewed-by: NWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: NSalil Mehta  <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

This patch modified the condition of notifying hardware loopback.

In hip06, RoCE Engine has several ports, one QP is related
to one port. hardware only support loopback in the same port,
not in the different ports.

So, If QP related to port N, the dmac in the QP context equals
the smac of the local port N or the loop_idc is 1, we should
set loopback bit in QP context to notify hardware.
Signed-off-by: NWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Signed-off-by: NSalil Mehta  <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

This patch mainly adds self loopback support for CM.
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Signed-off-by: NPeter Chen <luck.chen@huawei.com>
Reviewed-by: NWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: NSalil Mehta  <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

This patch added the code for refreshing CQ CI using TPTR in hip06
SoC.

We will send a doorbell to hardware for refreshing CQ CI when user
succeed to poll a cqe. But it will be failed if the doorbell has
been blocked. So hardware will read a special buffer called TPTR
to get the lastest CI value when the cq is almost full.

This patch support the special CI buffer as follows:
a) Alloc the memory for TPTR in the hns_roce_tptr_init function and
   free it in hns_roce_tptr_free function, these two functions will
   be called in probe function and in the remove function.
b) Add the code for computing offset(every cq need 2 bytes) and
   write the dma addr to every cq context to notice hardware in the
   function named hns_roce_v1_write_cqc.
c) Add code for mapping TPTR buffer to user space in function named
   hns_roce_mmap. The mapping distinguish TPTR and UAR of user mode
   by vm_pgoff(0: UAR, 1: TPTR, others:invaild) in hip06.
d) Alloc the code for refreshing CQ CI using TPTR in the function
   named hns_roce_v1_poll_cq.
e) Add some variable definitions to the related structure.
Signed-off-by: NWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: NDongdong Huang(Donald) <hdd.huang@huawei.com>
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Signed-off-by: NSalil Mehta  <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

In old code, It only added the interface for querying non-specific
QP. This patch mainly adds an interface for querying QP1.
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Reviewed-by: NWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: NSalil Mehta  <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

This patch removes the redundant code lines present in the
functions get_send_wqe() and get_recv_wqe(). This also fixes
the error in calculating the SQ WQE.
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Reviewed-by: NWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

It doesn't need to assign for the filed of qp state in qpc separately
when qp happen to migrate state which supported in RoCE engine v1.
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Reviewed-by: NWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

The rq head in qpc was zero will miss the rq wqes which
have be sent, so here we should take the real value.
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Reviewed-by: NWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Some items of qpc need to take user param when modified qp
state.
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Signed-off-by: NDongdong Huang(Donald) <hdd.huang@huawei.com>
Reviewed-by: NWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

The Ack timeout of qpc need a lower limit value,otherwise
the read performance will be very lower.
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Signed-off-by: NDongdong Huang(Donald) <hdd.huang@huawei.com>
Reviewed-by: NWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

While post failed, hns roce should return the wr failed to user.
We omitted this while qp type is wrong and fixed it.
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Signed-off-by: NDongdong Huang(Donald) <hdd.huang@huawei.com>
Reviewed-by: NWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

This patch deleted the sqp_start from the structure hns_roce_caps, and
modified the calculation of the qp number.
Signed-off-by: NWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

In hip06, there's no interface to release hem memory. So, hardware can't
identify whether hem memory released or not.
If all context in a hem memory released, the related hem memory will be
released by driver and reused by others. But, hardware don't know that
this memory can't be used already.

In order to fix this bug, hns roce driver reserved 128K memory for each
type of hem(QPC/CQC/MTPT). While unmap hem memory, hns roce driver will
write base address of reserved memory according to hem type.
Signed-off-by: NWei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: NDongdong Huang(Donald) <hdd.huang@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

The parameter named collapsed unused in hns_roce_cq_alloc.
Also, parameter named doorbell_lock unsed in
hns_roce_v1_cq_set_ci. This patch optimize these parameters.
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Reviewed-by: NWei Hu <xavier.huwei@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

This patch mainly modify the value of HNS_ROCE_SL_SHIFT
and delete the lines for assigning for the field of
local_enable_e2e_credit in QP1C.
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Reviewed-by: NWei Hu <xavier.huwei@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Fix bug of modify qp from init to init on user mode. Otherwise,
it will oops when rmda cm established.
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Reviewed-by: NWei Hu <xavier.huwei@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

This patch mainly adds phy_port to HNS RoCE QP. This shall be
used in calculating the GSI QPN for the port.
Initally when RDMA is being established, all IB ports share a
QPN which later needs to be re-assigned to a particular GSI/QPN
and which is per-port.
This also fixes a bug in base driver where iboe port was being
used instead of phy_port at some places. This values might not
be same always.
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Reviewed-by: NWei Hu <xavier.huwei@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Fix the length of wqe that maybe lead to an error and
write the end bytes of QP1C into the register.
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Reviewed-by: NWei Hu <xavier.huwei@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

This patch is meant to add support of ACPI to the Hisilicon RoCE
driver.

Changes done are primarily meant to detect the type and then either
use DT specific or ACPI spcific functions. Where ever possible,
this patch tries to make use of Unified Device Property Interface
APIs to support both DT and ACPI through single interface.

This patch depends upon HNS ethernet driver to Reset RoCE. This
function within HNS ethernet driver has also been enhanced to
support ACPI and is part of other accompanying patch with this
patch-set.

NOTE: The changes in this patch are done over below branch,
https://github.com/dledford/linux/tree/hns-roceSigned-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

These are the various new source code files for the Hisilicon
RoCE driver for ARM architecture.
Signed-off-by: NWei Hu <xavier.huwei@huawei.com>
Signed-off-by: NNenglong Zhao <zhaonenglong@hisilicon.com>
Signed-off-by: NLijun Ou <oulijun@huawei.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>