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Commit 5281a4b8 authored by Stefan Roscher's avatar Stefan Roscher Committed by Roland Dreier
Browse files

IB/ehca: Support more than 4k QPs for userspace and kernelspace 



Signed-off-by: default avatarJoachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 441633b9

drivers/infiniband/hw/ehca/ehca_cq.c

+6 −1
Original line number Diff line number Diff line
@@ -166,7 +166,6 @@ struct ib_cq *ehca_create_cq(struct ib_device *device, int cqe, int comp_vector, 
		write_lock_irqsave(&ehca_cq_idr_lock, flags);

		ret = idr_get_new(&ehca_cq_idr, my_cq, &my_cq->token);

		write_unlock_irqrestore(&ehca_cq_idr_lock, flags);



	} while (ret == -EAGAIN);



	if (ret) {
@@ -176,6 +175,12 @@ struct ib_cq *ehca_create_cq(struct ib_device *device, int cqe, int comp_vector, 
		goto create_cq_exit1;

	}



	if (my_cq->token > 0x1FFFFFF) {

		cq = ERR_PTR(-ENOMEM);

		ehca_err(device, "Invalid number of cq. device=%p", device);

		goto create_cq_exit2;

	}



	/*

	 * CQs maximum depth is 4GB-64, but we need additional 20 as buffer

	 * for receiving errors CQEs.

drivers/infiniband/hw/ehca/ehca_main.c

+1 −1
Original line number Diff line number Diff line
@@ -380,7 +380,7 @@ int ehca_init_device(struct ehca_shca *shca) 
	strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX);

	shca->ib_device.owner               = THIS_MODULE;



	shca->ib_device.uverbs_abi_ver	    = 7;

	shca->ib_device.uverbs_abi_ver	    = 8;

	shca->ib_device.uverbs_cmd_mask	    =

		(1ull << IB_USER_VERBS_CMD_GET_CONTEXT)		|

		(1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)	|

drivers/infiniband/hw/ehca/ehca_qp.c

+7 −2
Original line number Diff line number Diff line
@@ -557,7 +557,6 @@ static struct ehca_qp *internal_create_qp( 
		write_lock_irqsave(&ehca_qp_idr_lock, flags);

		ret = idr_get_new(&ehca_qp_idr, my_qp, &my_qp->token);

		write_unlock_irqrestore(&ehca_qp_idr_lock, flags);



	} while (ret == -EAGAIN);



	if (ret) {
@@ -566,11 +565,17 @@ static struct ehca_qp *internal_create_qp( 
		goto create_qp_exit0;

	}



	if (my_qp->token > 0x1FFFFFF) {

		ret = -EINVAL;

		ehca_err(pd->device, "Invalid number of qp");

		goto create_qp_exit1;

	}



	parms.servicetype = ibqptype2servicetype(qp_type);

	if (parms.servicetype < 0) {

		ret = -EINVAL;

		ehca_err(pd->device, "Invalid qp_type=%x", qp_type);

		goto create_qp_exit0;

		goto create_qp_exit1;

	}



	if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)

drivers/infiniband/hw/ehca/ehca_uverbs.c

+11 −11
Original line number Diff line number Diff line
@@ -164,7 +164,7 @@ static int ehca_mmap_cq(struct vm_area_struct *vma, struct ehca_cq *cq, 
	int ret;



	switch (rsrc_type) {

	case 1: /* galpa fw handle */

	case 0: /* galpa fw handle */

		ehca_dbg(cq->ib_cq.device, "cq_num=%x fw", cq->cq_number);

		ret = ehca_mmap_fw(vma, &cq->galpas, &cq->mm_count_galpa);

		if (unlikely(ret)) {
@@ -175,7 +175,7 @@ static int ehca_mmap_cq(struct vm_area_struct *vma, struct ehca_cq *cq, 
		}

		break;



	case 2: /* cq queue_addr */

	case 1: /* cq queue_addr */

		ehca_dbg(cq->ib_cq.device, "cq_num=%x queue", cq->cq_number);

		ret = ehca_mmap_queue(vma, &cq->ipz_queue, &cq->mm_count_queue);

		if (unlikely(ret)) {
@@ -201,7 +201,7 @@ static int ehca_mmap_qp(struct vm_area_struct *vma, struct ehca_qp *qp, 
	int ret;



	switch (rsrc_type) {

	case 1: /* galpa fw handle */

	case 0: /* galpa fw handle */

		ehca_dbg(qp->ib_qp.device, "qp_num=%x fw", qp->ib_qp.qp_num);

		ret = ehca_mmap_fw(vma, &qp->galpas, &qp->mm_count_galpa);

		if (unlikely(ret)) {
@@ -212,7 +212,7 @@ static int ehca_mmap_qp(struct vm_area_struct *vma, struct ehca_qp *qp, 
		}

		break;



	case 2: /* qp rqueue_addr */

	case 1: /* qp rqueue_addr */

		ehca_dbg(qp->ib_qp.device, "qp_num=%x rqueue",

			 qp->ib_qp.qp_num);

		ret = ehca_mmap_queue(vma, &qp->ipz_rqueue,
@@ -225,7 +225,7 @@ static int ehca_mmap_qp(struct vm_area_struct *vma, struct ehca_qp *qp, 
		}

		break;



	case 3: /* qp squeue_addr */

	case 2: /* qp squeue_addr */

		ehca_dbg(qp->ib_qp.device, "qp_num=%x squeue",

			 qp->ib_qp.qp_num);

		ret = ehca_mmap_queue(vma, &qp->ipz_squeue,
@@ -249,10 +249,10 @@ static int ehca_mmap_qp(struct vm_area_struct *vma, struct ehca_qp *qp, 


int ehca_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)

{

	u64 fileoffset = vma->vm_pgoff << PAGE_SHIFT;

	u32 idr_handle = fileoffset >> 32;

	u32 q_type = (fileoffset >> 28) & 0xF;	  /* CQ, QP,...        */

	u32 rsrc_type = (fileoffset >> 24) & 0xF; /* sq,rq,cmnd_window */

	u64 fileoffset = vma->vm_pgoff;

	u32 idr_handle = fileoffset & 0x1FFFFFF;

	u32 q_type = (fileoffset >> 27) & 0x1;	  /* CQ, QP,...        */

	u32 rsrc_type = (fileoffset >> 25) & 0x3; /* sq,rq,cmnd_window */

	u32 cur_pid = current->tgid;

	u32 ret;

	struct ehca_cq *cq;
@@ -261,7 +261,7 @@ int ehca_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 
	struct ib_uobject *uobject;



	switch (q_type) {

	case  1: /* CQ */

	case  0: /* CQ */

		read_lock(&ehca_cq_idr_lock);

		cq = idr_find(&ehca_cq_idr, idr_handle);

		read_unlock(&ehca_cq_idr_lock);
@@ -289,7 +289,7 @@ int ehca_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 
		}

		break;



	case 2: /* QP */

	case 1: /* QP */

		read_lock(&ehca_qp_idr_lock);

		qp = idr_find(&ehca_qp_idr, idr_handle);

		read_unlock(&ehca_qp_idr_lock);