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-rw-r--r--drivers/infiniband/hw/ehca/ehca_av.c2
-rw-r--r--drivers/infiniband/hw/ehca/ehca_classes.h23
-rw-r--r--drivers/infiniband/hw/ehca/ehca_cq.c2
-rw-r--r--drivers/infiniband/hw/ehca/ehca_irq.c38
-rw-r--r--drivers/infiniband/hw/ehca/ehca_iverbs.h2
-rw-r--r--drivers/infiniband/hw/ehca/ehca_main.c28
-rw-r--r--drivers/infiniband/hw/ehca/ehca_qp.c180
-rw-r--r--drivers/infiniband/hw/ehca/ehca_reqs.c112
-rw-r--r--drivers/infiniband/hw/ehca/ehca_sqp.c6
9 files changed, 328 insertions, 65 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_av.c b/drivers/infiniband/hw/ehca/ehca_av.c
index f7782c882ab..194c1c30cf6 100644
--- a/drivers/infiniband/hw/ehca/ehca_av.c
+++ b/drivers/infiniband/hw/ehca/ehca_av.c
@@ -1,7 +1,7 @@
/*
* IBM eServer eHCA Infiniband device driver for Linux on POWER
*
- * adress vector functions
+ * address vector functions
*
* Authors: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
* Khadija Souissi <souissik@de.ibm.com>
diff --git a/drivers/infiniband/hw/ehca/ehca_classes.h b/drivers/infiniband/hw/ehca/ehca_classes.h
index 74d2b72a11d..f281d16040f 100644
--- a/drivers/infiniband/hw/ehca/ehca_classes.h
+++ b/drivers/infiniband/hw/ehca/ehca_classes.h
@@ -94,7 +94,11 @@ struct ehca_sma_attr {
struct ehca_sport {
struct ib_cq *ibcq_aqp1;
- struct ib_qp *ibqp_aqp1;
+ struct ib_qp *ibqp_sqp[2];
+ /* lock to serialze modify_qp() calls for sqp in normal
+ * and irq path (when event PORT_ACTIVE is received first time)
+ */
+ spinlock_t mod_sqp_lock;
enum ib_port_state port_state;
struct ehca_sma_attr saved_attr;
};
@@ -141,6 +145,14 @@ enum ehca_ext_qp_type {
EQPT_SRQ = 3,
};
+/* struct to cache modify_qp()'s parms for GSI/SMI qp */
+struct ehca_mod_qp_parm {
+ int mask;
+ struct ib_qp_attr attr;
+};
+
+#define EHCA_MOD_QP_PARM_MAX 4
+
struct ehca_qp {
union {
struct ib_qp ib_qp;
@@ -164,10 +176,18 @@ struct ehca_qp {
struct ehca_cq *recv_cq;
unsigned int sqerr_purgeflag;
struct hlist_node list_entries;
+ /* array to cache modify_qp()'s parms for GSI/SMI qp */
+ struct ehca_mod_qp_parm *mod_qp_parm;
+ int mod_qp_parm_idx;
/* mmap counter for resources mapped into user space */
u32 mm_count_squeue;
u32 mm_count_rqueue;
u32 mm_count_galpa;
+ /* unsolicited ack circumvention */
+ int unsol_ack_circ;
+ int mtu_shift;
+ u32 message_count;
+ u32 packet_count;
};
#define IS_SRQ(qp) (qp->ext_type == EQPT_SRQ)
@@ -323,6 +343,7 @@ extern int ehca_port_act_time;
extern int ehca_use_hp_mr;
extern int ehca_scaling_code;
extern int ehca_lock_hcalls;
+extern int ehca_nr_ports;
struct ipzu_queue_resp {
u32 qe_size; /* queue entry size */
diff --git a/drivers/infiniband/hw/ehca/ehca_cq.c b/drivers/infiniband/hw/ehca/ehca_cq.c
index 79c25f51c21..0467c158d4a 100644
--- a/drivers/infiniband/hw/ehca/ehca_cq.c
+++ b/drivers/infiniband/hw/ehca/ehca_cq.c
@@ -246,7 +246,7 @@ struct ib_cq *ehca_create_cq(struct ib_device *device, int cqe, int comp_vector,
} else {
if (h_ret != H_PAGE_REGISTERED) {
ehca_err(device, "Registration of page failed "
- "ehca_cq=%p cq_num=%x h_ret=%li"
+ "ehca_cq=%p cq_num=%x h_ret=%li "
"counter=%i act_pages=%i",
my_cq, my_cq->cq_number,
h_ret, counter, param.act_pages);
diff --git a/drivers/infiniband/hw/ehca/ehca_irq.c b/drivers/infiniband/hw/ehca/ehca_irq.c
index 3f617b27b95..863b34fa9ff 100644
--- a/drivers/infiniband/hw/ehca/ehca_irq.c
+++ b/drivers/infiniband/hw/ehca/ehca_irq.c
@@ -62,6 +62,7 @@
#define NEQE_PORT_NUMBER EHCA_BMASK_IBM( 8, 15)
#define NEQE_PORT_AVAILABILITY EHCA_BMASK_IBM(16, 16)
#define NEQE_DISRUPTIVE EHCA_BMASK_IBM(16, 16)
+#define NEQE_SPECIFIC_EVENT EHCA_BMASK_IBM(16, 23)
#define ERROR_DATA_LENGTH EHCA_BMASK_IBM(52, 63)
#define ERROR_DATA_TYPE EHCA_BMASK_IBM( 0, 7)
@@ -354,17 +355,34 @@ static void parse_ec(struct ehca_shca *shca, u64 eqe)
{
u8 ec = EHCA_BMASK_GET(NEQE_EVENT_CODE, eqe);
u8 port = EHCA_BMASK_GET(NEQE_PORT_NUMBER, eqe);
+ u8 spec_event;
+ struct ehca_sport *sport = &shca->sport[port - 1];
+ unsigned long flags;
switch (ec) {
case 0x30: /* port availability change */
if (EHCA_BMASK_GET(NEQE_PORT_AVAILABILITY, eqe)) {
- shca->sport[port - 1].port_state = IB_PORT_ACTIVE;
+ int suppress_event;
+ /* replay modify_qp for sqps */
+ spin_lock_irqsave(&sport->mod_sqp_lock, flags);
+ suppress_event = !sport->ibqp_sqp[IB_QPT_GSI];
+ if (sport->ibqp_sqp[IB_QPT_SMI])
+ ehca_recover_sqp(sport->ibqp_sqp[IB_QPT_SMI]);
+ if (!suppress_event)
+ ehca_recover_sqp(sport->ibqp_sqp[IB_QPT_GSI]);
+ spin_unlock_irqrestore(&sport->mod_sqp_lock, flags);
+
+ /* AQP1 was destroyed, ignore this event */
+ if (suppress_event)
+ break;
+
+ sport->port_state = IB_PORT_ACTIVE;
dispatch_port_event(shca, port, IB_EVENT_PORT_ACTIVE,
"is active");
ehca_query_sma_attr(shca, port,
- &shca->sport[port - 1].saved_attr);
+ &sport->saved_attr);
} else {
- shca->sport[port - 1].port_state = IB_PORT_DOWN;
+ sport->port_state = IB_PORT_DOWN;
dispatch_port_event(shca, port, IB_EVENT_PORT_ERR,
"is inactive");
}
@@ -378,11 +396,11 @@ static void parse_ec(struct ehca_shca *shca, u64 eqe)
ehca_warn(&shca->ib_device, "disruptive port "
"%d configuration change", port);
- shca->sport[port - 1].port_state = IB_PORT_DOWN;
+ sport->port_state = IB_PORT_DOWN;
dispatch_port_event(shca, port, IB_EVENT_PORT_ERR,
"is inactive");
- shca->sport[port - 1].port_state = IB_PORT_ACTIVE;
+ sport->port_state = IB_PORT_ACTIVE;
dispatch_port_event(shca, port, IB_EVENT_PORT_ACTIVE,
"is active");
} else
@@ -394,6 +412,16 @@ static void parse_ec(struct ehca_shca *shca, u64 eqe)
case 0x33: /* trace stopped */
ehca_err(&shca->ib_device, "Traced stopped.");
break;
+ case 0x34: /* util async event */
+ spec_event = EHCA_BMASK_GET(NEQE_SPECIFIC_EVENT, eqe);
+ if (spec_event == 0x80) /* client reregister required */
+ dispatch_port_event(shca, port,
+ IB_EVENT_CLIENT_REREGISTER,
+ "client reregister req.");
+ else
+ ehca_warn(&shca->ib_device, "Unknown util async "
+ "event %x on port %x", spec_event, port);
+ break;
default:
ehca_err(&shca->ib_device, "Unknown event code: %x on %s.",
ec, shca->ib_device.name);
diff --git a/drivers/infiniband/hw/ehca/ehca_iverbs.h b/drivers/infiniband/hw/ehca/ehca_iverbs.h
index 5485799cdc8..c469bfde270 100644
--- a/drivers/infiniband/hw/ehca/ehca_iverbs.h
+++ b/drivers/infiniband/hw/ehca/ehca_iverbs.h
@@ -200,4 +200,6 @@ void ehca_free_fw_ctrlblock(void *ptr);
#define ehca_free_fw_ctrlblock(ptr) free_page((unsigned long)(ptr))
#endif
+void ehca_recover_sqp(struct ib_qp *sqp);
+
#endif
diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c
index 6a56d86a295..84c9b7b8669 100644
--- a/drivers/infiniband/hw/ehca/ehca_main.c
+++ b/drivers/infiniband/hw/ehca/ehca_main.c
@@ -90,7 +90,8 @@ MODULE_PARM_DESC(hw_level,
"hardware level"
" (0: autosensing (default), 1: v. 0.20, 2: v. 0.21)");
MODULE_PARM_DESC(nr_ports,
- "number of connected ports (default: 2)");
+ "number of connected ports (-1: autodetect, 1: port one only, "
+ "2: two ports (default)");
MODULE_PARM_DESC(use_hp_mr,
"high performance MRs (0: no (default), 1: yes)");
MODULE_PARM_DESC(port_act_time,
@@ -511,7 +512,7 @@ static int ehca_create_aqp1(struct ehca_shca *shca, u32 port)
}
sport->ibcq_aqp1 = ibcq;
- if (sport->ibqp_aqp1) {
+ if (sport->ibqp_sqp[IB_QPT_GSI]) {
ehca_err(&shca->ib_device, "AQP1 QP is already created.");
ret = -EPERM;
goto create_aqp1;
@@ -537,7 +538,7 @@ static int ehca_create_aqp1(struct ehca_shca *shca, u32 port)
ret = PTR_ERR(ibqp);
goto create_aqp1;
}
- sport->ibqp_aqp1 = ibqp;
+ sport->ibqp_sqp[IB_QPT_GSI] = ibqp;
return 0;
@@ -550,7 +551,7 @@ static int ehca_destroy_aqp1(struct ehca_sport *sport)
{
int ret;
- ret = ib_destroy_qp(sport->ibqp_aqp1);
+ ret = ib_destroy_qp(sport->ibqp_sqp[IB_QPT_GSI]);
if (ret) {
ehca_gen_err("Cannot destroy AQP1 QP. ret=%i", ret);
return ret;
@@ -590,6 +591,11 @@ static struct attribute_group ehca_drv_attr_grp = {
.attrs = ehca_drv_attrs
};
+static struct attribute_group *ehca_drv_attr_groups[] = {
+ &ehca_drv_attr_grp,
+ NULL,
+};
+
#define EHCA_RESOURCE_ATTR(name) \
static ssize_t ehca_show_##name(struct device *dev, \
struct device_attribute *attr, \
@@ -688,7 +694,7 @@ static int __devinit ehca_probe(struct of_device *dev,
struct ehca_shca *shca;
const u64 *handle;
struct ib_pd *ibpd;
- int ret;
+ int ret, i;
handle = of_get_property(dev->node, "ibm,hca-handle", NULL);
if (!handle) {
@@ -709,6 +715,8 @@ static int __devinit ehca_probe(struct of_device *dev,
return -ENOMEM;
}
mutex_init(&shca->modify_mutex);
+ for (i = 0; i < ARRAY_SIZE(shca->sport); i++)
+ spin_lock_init(&shca->sport[i].mod_sqp_lock);
shca->ofdev = dev;
shca->ipz_hca_handle.handle = *handle;
@@ -899,6 +907,9 @@ static struct of_platform_driver ehca_driver = {
.match_table = ehca_device_table,
.probe = ehca_probe,
.remove = ehca_remove,
+ .driver = {
+ .groups = ehca_drv_attr_groups,
+ },
};
void ehca_poll_eqs(unsigned long data)
@@ -926,7 +937,7 @@ void ehca_poll_eqs(unsigned long data)
ehca_process_eq(shca, 0);
}
}
- mod_timer(&poll_eqs_timer, jiffies + HZ);
+ mod_timer(&poll_eqs_timer, round_jiffies(jiffies + HZ));
spin_unlock(&shca_list_lock);
}
@@ -957,10 +968,6 @@ int __init ehca_module_init(void)
goto module_init2;
}
- ret = sysfs_create_group(&ehca_driver.driver.kobj, &ehca_drv_attr_grp);
- if (ret) /* only complain; we can live without attributes */
- ehca_gen_err("Cannot create driver attributes ret=%d", ret);
-
if (ehca_poll_all_eqs != 1) {
ehca_gen_err("WARNING!!!");
ehca_gen_err("It is possible to lose interrupts.");
@@ -986,7 +993,6 @@ void __exit ehca_module_exit(void)
if (ehca_poll_all_eqs == 1)
del_timer_sync(&poll_eqs_timer);
- sysfs_remove_group(&ehca_driver.driver.kobj, &ehca_drv_attr_grp);
ibmebus_unregister_driver(&ehca_driver);
ehca_destroy_slab_caches();
diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c b/drivers/infiniband/hw/ehca/ehca_qp.c
index eff5fb55604..1012f15a714 100644
--- a/drivers/infiniband/hw/ehca/ehca_qp.c
+++ b/drivers/infiniband/hw/ehca/ehca_qp.c
@@ -592,10 +592,8 @@ static struct ehca_qp *internal_create_qp(
goto create_qp_exit1;
}
- if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
- parms.sigtype = HCALL_SIGT_EVERY;
- else
- parms.sigtype = HCALL_SIGT_BY_WQE;
+ /* Always signal by WQE so we can hide circ. WQEs */
+ parms.sigtype = HCALL_SIGT_BY_WQE;
/* UD_AV CIRCUMVENTION */
max_send_sge = init_attr->cap.max_send_sge;
@@ -618,6 +616,10 @@ static struct ehca_qp *internal_create_qp(
parms.squeue.max_sge = max_send_sge;
parms.rqueue.max_sge = max_recv_sge;
+ /* RC QPs need one more SWQE for unsolicited ack circumvention */
+ if (qp_type == IB_QPT_RC)
+ parms.squeue.max_wr++;
+
if (EHCA_BMASK_GET(HCA_CAP_MINI_QP, shca->hca_cap)) {
if (HAS_SQ(my_qp))
ehca_determine_small_queue(
@@ -650,6 +652,8 @@ static struct ehca_qp *internal_create_qp(
parms.squeue.act_nr_sges = 1;
parms.rqueue.act_nr_sges = 1;
}
+ /* hide the extra WQE */
+ parms.squeue.act_nr_wqes--;
break;
case IB_QPT_UD:
case IB_QPT_GSI:
@@ -729,12 +733,31 @@ static struct ehca_qp *internal_create_qp(
init_attr->cap.max_send_wr = parms.squeue.act_nr_wqes;
my_qp->init_attr = *init_attr;
+ if (qp_type == IB_QPT_SMI || qp_type == IB_QPT_GSI) {
+ shca->sport[init_attr->port_num - 1].ibqp_sqp[qp_type] =
+ &my_qp->ib_qp;
+ if (ehca_nr_ports < 0) {
+ /* alloc array to cache subsequent modify qp parms
+ * for autodetect mode
+ */
+ my_qp->mod_qp_parm =
+ kzalloc(EHCA_MOD_QP_PARM_MAX *
+ sizeof(*my_qp->mod_qp_parm),
+ GFP_KERNEL);
+ if (!my_qp->mod_qp_parm) {
+ ehca_err(pd->device,
+ "Could not alloc mod_qp_parm");
+ goto create_qp_exit4;
+ }
+ }
+ }
+
/* NOTE: define_apq0() not supported yet */
if (qp_type == IB_QPT_GSI) {
h_ret = ehca_define_sqp(shca, my_qp, init_attr);
if (h_ret != H_SUCCESS) {
ret = ehca2ib_return_code(h_ret);
- goto create_qp_exit4;
+ goto create_qp_exit5;
}
}
@@ -743,7 +766,7 @@ static struct ehca_qp *internal_create_qp(
if (ret) {
ehca_err(pd->device,
"Couldn't assign qp to send_cq ret=%i", ret);
- goto create_qp_exit4;
+ goto create_qp_exit5;
}
}
@@ -769,12 +792,18 @@ static struct ehca_qp *internal_create_qp(
if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
ehca_err(pd->device, "Copy to udata failed");
ret = -EINVAL;
- goto create_qp_exit4;
+ goto create_qp_exit6;
}
}
return my_qp;
+create_qp_exit6:
+ ehca_cq_unassign_qp(my_qp->send_cq, my_qp->real_qp_num);
+
+create_qp_exit5:
+ kfree(my_qp->mod_qp_parm);
+
create_qp_exit4:
if (HAS_RQ(my_qp))
ipz_queue_dtor(my_pd, &my_qp->ipz_rqueue);
@@ -858,7 +887,7 @@ struct ib_srq *ehca_create_srq(struct ib_pd *pd,
update_mask,
mqpcb, my_qp->galpas.kernel);
if (hret != H_SUCCESS) {
- ehca_err(pd->device, "Could not modify SRQ to INIT"
+ ehca_err(pd->device, "Could not modify SRQ to INIT "
"ehca_qp=%p qp_num=%x h_ret=%li",
my_qp, my_qp->real_qp_num, hret);
goto create_srq2;
@@ -872,7 +901,7 @@ struct ib_srq *ehca_create_srq(struct ib_pd *pd,
update_mask,
mqpcb, my_qp->galpas.kernel);
if (hret != H_SUCCESS) {
- ehca_err(pd->device, "Could not enable SRQ"
+ ehca_err(pd->device, "Could not enable SRQ "
"ehca_qp=%p qp_num=%x h_ret=%li",
my_qp, my_qp->real_qp_num, hret);
goto create_srq2;
@@ -886,7 +915,7 @@ struct ib_srq *ehca_create_srq(struct ib_pd *pd,
update_mask,
mqpcb, my_qp->galpas.kernel);
if (hret != H_SUCCESS) {
- ehca_err(pd->device, "Could not modify SRQ to RTR"
+ ehca_err(pd->device, "Could not modify SRQ to RTR "
"ehca_qp=%p qp_num=%x h_ret=%li",
my_qp, my_qp->real_qp_num, hret);
goto create_srq2;
@@ -992,7 +1021,7 @@ static int internal_modify_qp(struct ib_qp *ibqp,
unsigned long flags = 0;
/* do query_qp to obtain current attr values */
- mqpcb = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
+ mqpcb = ehca_alloc_fw_ctrlblock(GFP_ATOMIC);
if (!mqpcb) {
ehca_err(ibqp->device, "Could not get zeroed page for mqpcb "
"ehca_qp=%p qp_num=%x ", my_qp, ibqp->qp_num);
@@ -1180,6 +1209,8 @@ static int internal_modify_qp(struct ib_qp *ibqp,
update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PRIM_P_KEY_IDX, 1);
}
if (attr_mask & IB_QP_PORT) {
+ struct ehca_sport *sport;
+ struct ehca_qp *aqp1;
if (attr->port_num < 1 || attr->port_num > shca->num_ports) {
ret = -EINVAL;
ehca_err(ibqp->device, "Invalid port=%x. "
@@ -1188,6 +1219,29 @@ static int internal_modify_qp(struct ib_qp *ibqp,
shca->num_ports);
goto modify_qp_exit2;
}
+ sport = &shca->sport[attr->port_num - 1];
+ if (!sport->ibqp_sqp[IB_QPT_GSI]) {
+ /* should not occur */
+ ret = -EFAULT;
+ ehca_err(ibqp->device, "AQP1 was not created for "
+ "port=%x", attr->port_num);
+ goto modify_qp_exit2;
+ }
+ aqp1 = container_of(sport->ibqp_sqp[IB_QPT_GSI],
+ struct ehca_qp, ib_qp);
+ if (ibqp->qp_type != IB_QPT_GSI &&
+ ibqp->qp_type != IB_QPT_SMI &&
+ aqp1->mod_qp_parm) {
+ /*
+ * firmware will reject this modify_qp() because
+ * port is not activated/initialized fully
+ */
+ ret = -EFAULT;
+ ehca_warn(ibqp->device, "Couldn't modify qp port=%x: "
+ "either port is being activated (try again) "
+ "or cabling issue", attr->port_num);
+ goto modify_qp_exit2;
+ }
mqpcb->prim_phys_port = attr->port_num;
update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PRIM_PHYS_PORT, 1);
}
@@ -1244,6 +1298,8 @@ static int internal_modify_qp(struct ib_qp *ibqp,
}
if (attr_mask & IB_QP_PATH_MTU) {
+ /* store ld(MTU) */
+ my_qp->mtu_shift = attr->path_mtu + 7;
mqpcb->path_mtu = attr->path_mtu;
update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PATH_MTU, 1);
}
@@ -1467,6 +1523,8 @@ modify_qp_exit1:
int ehca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask,
struct ib_udata *udata)
{
+ struct ehca_shca *shca = container_of(ibqp->device, struct ehca_shca,
+ ib_device);
struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp);
struct ehca_pd *my_pd = container_of(my_qp->ib_qp.pd, struct ehca_pd,
ib_pd);
@@ -1479,9 +1537,100 @@ int ehca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask,
return -EINVAL;
}
+ /* The if-block below caches qp_attr to be modified for GSI and SMI
+ * qps during the initialization by ib_mad. When the respective port
+ * is activated, ie we got an event PORT_ACTIVE, we'll replay the
+ * cached modify calls sequence, see ehca_recover_sqs() below.
+ * Why that is required:
+ * 1) If one port is connected, older code requires that port one
+ * to be connected and module option nr_ports=1 to be given by
+ * user, which is very inconvenient for end user.
+ * 2) Firmware accepts modify_qp() only if respective port has become
+ * active. Older code had a wait loop of 30sec create_qp()/
+ * define_aqp1(), which is not appropriate in practice. This
+ * code now removes that wait loop, see define_aqp1(), and always
+ * reports all ports to ib_mad resp. users. Only activated ports
+ * will then usable for the users.
+ */
+ if (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI) {
+ int port = my_qp->init_attr.port_num;
+ struct ehca_sport *sport = &shca->sport[port - 1];
+ unsigned long flags;
+ spin_lock_irqsave(&sport->mod_sqp_lock, flags);
+ /* cache qp_attr only during init */
+ if (my_qp->mod_qp_parm) {
+ struct ehca_mod_qp_parm *p;
+ if (my_qp->mod_qp_parm_idx >= EHCA_MOD_QP_PARM_MAX) {
+ ehca_err(&shca->ib_device,
+ "mod_qp_parm overflow state=%x port=%x"
+ " type=%x", attr->qp_state,
+ my_qp->init_attr.port_num,
+ ibqp->qp_type);
+ spin_unlock_irqrestore(&sport->mod_sqp_lock,
+ flags);
+ return -EINVAL;
+ }
+ p = &my_qp->mod_qp_parm[my_qp->mod_qp_parm_idx];
+ p->mask = attr_mask;
+ p->attr = *attr;
+ my_qp->mod_qp_parm_idx++;
+ ehca_dbg(&shca->ib_device,
+ "Saved qp_attr for state=%x port=%x type=%x",
+ attr->qp_state, my_qp->init_attr.port_num,
+ ibqp->qp_type);
+ spin_unlock_irqrestore(&sport->mod_sqp_lock, flags);
+ return 0;
+ }
+ spin_unlock_irqrestore(&sport->mod_sqp_lock, flags);
+ }
+
return internal_modify_qp(ibqp, attr, attr_mask, 0);
}
+void ehca_recover_sqp(struct ib_qp *sqp)
+{
+ struct ehca_qp *my_sqp = container_of(sqp, struct ehca_qp, ib_qp);
+ int port = my_sqp->init_attr.port_num;
+ struct ib_qp_attr attr;
+ struct ehca_mod_qp_parm *qp_parm;
+ int i, qp_parm_idx, ret;
+ unsigned long flags, wr_cnt;
+
+ if (!my_sqp->mod_qp_parm)
+ return;
+ ehca_dbg(sqp->device, "SQP port=%x qp_num=%x", port, sqp->qp_num);
+
+ qp_parm = my_sqp->mod_qp_parm;
+ qp_parm_idx = my_sqp->mod_qp_parm_idx;
+ for (i = 0; i < qp_parm_idx; i++) {
+ attr = qp_parm[i].attr;
+ ret = internal_modify_qp(sqp, &attr, qp_parm[i].mask, 0);
+ if (ret) {
+ ehca_err(sqp->device, "Could not modify SQP port=%x "
+ "qp_num=%x ret=%x", port, sqp->qp_num, ret);
+ goto free_qp_parm;
+ }
+ ehca_dbg(sqp->device, "SQP port=%x qp_num=%x in state=%x",
+ port, sqp->qp_num, attr.qp_state);
+ }
+
+ /* re-trigger posted recv wrs */
+ wr_cnt = my_sqp->ipz_rqueue.current_q_offset /
+ my_sqp->ipz_rqueue.qe_size;
+ if (wr_cnt) {
+ spin_lock_irqsave(&my_sqp->spinlock_r, flags);
+ hipz_update_rqa(my_sqp, wr_cnt);
+ spin_unlock_irqrestore(&my_sqp->spinlock_r, flags);
+ ehca_dbg(sqp->device, "doorbell port=%x qp_num=%x wr_cnt=%lx",
+ port, sqp->qp_num, wr_cnt);
+ }
+
+free_qp_parm:
+ kfree(qp_parm);
+ /* this prevents subsequent calls to modify_qp() to cache qp_attr */
+ my_sqp->mod_qp_parm = NULL;
+}
+
int ehca_query_qp(struct ib_qp *qp,
struct ib_qp_attr *qp_attr,
int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr)
@@ -1769,6 +1918,7 @@ static int internal_destroy_qp(struct ib_device *dev, struct ehca_qp *my_qp,
struct ehca_shca *shca = container_of(dev, struct ehca_shca, ib_device);
struct ehca_pd *my_pd = container_of(my_qp->ib_qp.pd, struct ehca_pd,
ib_pd);
+ struct ehca_sport *sport = &shca->sport[my_qp->init_attr.port_num - 1];
u32 cur_pid = current->tgid;
u32 qp_num = my_qp->real_qp_num;
int ret;
@@ -1815,6 +1965,14 @@ static int internal_destroy_qp(struct ib_device *dev, struct ehca_qp *my_qp,
port_num = my_qp->init_attr.port_num;
qp_type = my_qp->init_attr.qp_type;
+ if (qp_type == IB_QPT_SMI || qp_type == IB_QPT_GSI) {
+ spin_lock_irqsave(&sport->mod_sqp_lock, flags);
+ kfree(my_qp->mod_qp_parm);
+ my_qp->mod_qp_parm = NULL;
+ shca->sport[port_num - 1].ibqp_sqp[qp_type] = NULL;
+ spin_unlock_irqrestore(&sport->mod_sqp_lock, flags);
+ }
+
/* no support for IB_QPT_SMI yet */
if (qp_type == IB_QPT_GSI) {
struct ib_event event;
diff --git a/drivers/infiniband/hw/ehca/ehca_reqs.c b/drivers/infiniband/hw/ehca/ehca_reqs.c
index ea91360835d..3aacc8cf1e4 100644
--- a/drivers/infiniband/hw/ehca/ehca_reqs.c
+++ b/drivers/infiniband/hw/ehca/ehca_reqs.c
@@ -50,6 +50,9 @@
#include "hcp_if.h"
#include "hipz_fns.h"
+/* in RC traffic, insert an empty RDMA READ every this many packets */
+#define ACK_CIRC_THRESHOLD 2000000
+
static inline int ehca_write_rwqe(struct ipz_queue *ipz_rqueue,
struct ehca_wqe *wqe_p,
struct ib_recv_wr *recv_wr)
@@ -81,7 +84,7 @@ static inline int ehca_write_rwqe(struct ipz_queue *ipz_rqueue,
if (ehca_debug_level) {
ehca_gen_dbg("RECEIVE WQE written into ipz_rqueue=%p",
ipz_rqueue);
- ehca_dmp( wqe_p, 16*(6 + wqe_p->nr_of_data_seg), "recv wqe");
+ ehca_dmp(wqe_p, 16*(6 + wqe_p->nr_of_data_seg), "recv wqe");
}
return 0;
@@ -135,7 +138,8 @@ static void trace_send_wr_ud(const struct ib_send_wr *send_wr)
static inline int ehca_write_swqe(struct ehca_qp *qp,
struct ehca_wqe *wqe_p,
- const struct ib_send_wr *send_wr)
+ const struct ib_send_wr *send_wr,
+ int hidden)
{
u32 idx;
u64 dma_length;
@@ -176,7 +180,9 @@ static inline int ehca_write_swqe(struct ehca_qp *qp,
wqe_p->wr_flag = 0;
- if (send_wr->send_flags & IB_SEND_SIGNALED)
+ if ((send_wr->send_flags & IB_SEND_SIGNALED ||
+ qp->init_attr.sq_sig_type == IB_SIGNAL_ALL_WR)
+ && !hidden)
wqe_p->wr_flag |= WQE_WRFLAG_REQ_SIGNAL_COM;
if (send_wr->opcode == IB_WR_SEND_WITH_IMM ||
@@ -199,7 +205,7 @@ static inline int ehca_write_swqe(struct ehca_qp *qp,
wqe_p->destination_qp_number = send_wr->wr.ud.remote_qpn << 8;
wqe_p->local_ee_context_qkey = remote_qkey;
- if (!send_wr->wr.ud.ah) {
+ if (unlikely(!send_wr->wr.ud.ah)) {
ehca_gen_err("wr.ud.ah is NULL. qp=%p", qp);
return -EINVAL;
}
@@ -255,6 +261,15 @@ static inline int ehca_write_swqe(struct ehca_qp *qp,
} /* eof idx */
wqe_p->u.nud.atomic_1st_op_dma_len = dma_length;
+ /* unsolicited ack circumvention */
+ if (send_wr->opcode == IB_WR_RDMA_READ) {
+ /* on RDMA read, switch on and reset counters */
+ qp->message_count = qp->packet_count = 0;
+ qp->unsol_ack_circ = 1;
+ } else
+ /* else estimate #packets */
+ qp->packet_count += (dma_length >> qp->mtu_shift) + 1;
+
break;
default:
@@ -355,13 +370,49 @@ static inline void map_ib_wc_status(u32 cqe_status,
*wc_status = IB_WC_SUCCESS;
}
+static inline int post_one_send(struct ehca_qp *my_qp,
+ struct ib_send_wr *cur_send_wr,
+ struct ib_send_wr **bad_send_wr,
+ int hidden)
+{
+ struct ehca_wqe *wqe_p;
+ int ret;
+ u64 start_offset = my_qp->ipz_squeue.current_q_offset;
+
+ /* get pointer next to free WQE */
+ wqe_p = ipz_qeit_get_inc(&my_qp->ipz_squeue);
+ if (unlikely(!wqe_p)) {
+ /* too many posted work requests: queue overflow */
+ if (bad_send_wr)
+ *bad_send_wr = cur_send_wr;
+ ehca_err(my_qp->ib_qp.device, "Too many posted WQEs "
+ "qp_num=%x", my_qp->ib_qp.qp_num);
+ return -ENOMEM;
+ }
+ /* write a SEND WQE into the QUEUE */
+ ret = ehca_write_swqe(my_qp, wqe_p, cur_send_wr, hidden);
+ /*
+ * if something failed,
+ * reset the free entry pointer to the start value
+ */
+ if (unlikely(ret)) {
+ my_qp->ipz_squeue.current_q_offset = start_offset;
+ if (bad_send_wr)
+ *bad_send_wr = cur_send_wr;
+ ehca_err(my_qp->ib_qp.device, "Could not write WQE "
+ "qp_num=%x", my_qp->ib_qp.qp_num);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
int ehca_post_send(struct ib_qp *qp,
struct ib_send_wr *send_wr,
struct ib_send_wr **bad_send_wr)
{
struct ehca_qp *my_qp = container_of(qp, struct ehca_qp, ib_qp);
struct ib_send_wr *cur_send_wr;
- struct ehca_wqe *wqe_p;
int wqe_cnt = 0;
int ret = 0;
unsigned long flags;
@@ -369,37 +420,33 @@ int ehca_post_send(struct ib_qp *qp,
/* LOCK the QUEUE */
spin_lock_irqsave(&my_qp->spinlock_s, flags);
+ /* Send an empty extra RDMA read if:
+ * 1) there has been an RDMA read on this connection before
+ * 2) no RDMA read occurred for ACK_CIRC_THRESHOLD link packets
+ * 3) we can be sure that any previous extra RDMA read has been
+ * processed so we don't overflow the SQ
+ */
+ if (unlikely(my_qp->unsol_ack_circ &&
+ my_qp->packet_count > ACK_CIRC_THRESHOLD &&
+ my_qp->message_count > my_qp->init_attr.cap.max_send_wr)) {
+ /* insert an empty RDMA READ to fix up the remote QP state */
+ struct ib_send_wr circ_wr;
+ memset(&circ_wr, 0, sizeof(circ_wr));
+ circ_wr.opcode = IB_WR_RDMA_READ;
+ post_one_send(my_qp, &circ_wr, NULL, 1); /* ignore retcode */
+ wqe_cnt++;
+ ehca_dbg(qp->device, "posted circ wr qp_num=%x", qp->qp_num);
+ my_qp->message_count = my_qp->packet_count = 0;
+ }
+
/* loop processes list of send reqs */
for (cur_send_wr = send_wr; cur_send_wr != NULL;
cur_send_wr = cur_send_wr->next) {
- u64 start_offset = my_qp->ipz_squeue.current_q_offset;
- /* get pointer next to free WQE */
- wqe_p = ipz_qeit_get_inc(&my_qp->ipz_squeue);
- if (unlikely(!wqe_p)) {
- /* too many posted work requests: queue overflow */
- if (bad_send_wr)
- *bad_send_wr = cur_send_wr;
- if (wqe_cnt == 0) {
- ret = -ENOMEM;
- ehca_err(qp->device, "Too many posted WQEs "
- "qp_num=%x", qp->qp_num);
- }
- goto post_send_exit0;
- }
- /* write a SEND WQE into the QUEUE */
- ret = ehca_write_swqe(my_qp, wqe_p, cur_send_wr);
- /*
- * if something failed,
- * reset the free entry pointer to the start value
- */
+ ret = post_one_send(my_qp, cur_send_wr, bad_send_wr, 0);
if (unlikely(ret)) {
- my_qp->ipz_squeue.current_q_offset = start_offset;
- *bad_send_wr = cur_send_wr;
- if (wqe_cnt == 0) {
- ret = -EINVAL;
- ehca_err(qp->device, "Could not write WQE "
- "qp_num=%x", qp->qp_num);
- }
+ /* if one or more WQEs were successful, don't fail */
+ if (wqe_cnt)
+ ret = 0;
goto post_send_exit0;
}
wqe_cnt++;
@@ -410,6 +457,7 @@ int ehca_post_send(struct ib_qp *qp,
post_send_exit0:
iosync(); /* serialize GAL register access */
hipz_update_sqa(my_qp, wqe_cnt);
+ my_qp->message_count += wqe_cnt;
spin_unlock_irqrestore(&my_qp->spinlock_s, flags);
return ret;
}
diff --git a/drivers/infiniband/hw/ehca/ehca_sqp.c b/drivers/infiniband/hw/ehca/ehca_sqp.c
index f0792e5fbd0..79e72b25b25 100644
--- a/drivers/infiniband/hw/ehca/ehca_sqp.c
+++ b/drivers/infiniband/hw/ehca/ehca_sqp.c
@@ -40,11 +40,8 @@
*/
-#include <linux/module.h>
-#include <linux/err.h>
#include "ehca_classes.h"
#include "ehca_tools.h"
-#include "ehca_qes.h"
#include "ehca_iverbs.h"
#include "hcp_if.h"
@@ -93,6 +90,9 @@ u64 ehca_define_sqp(struct ehca_shca *shca,
return H_PARAMETER;
}
+ if (ehca_nr_ports < 0) /* autodetect mode */
+ return H_SUCCESS;
+
for (counter = 0;
shca->sport[port - 1].port_state != IB_PORT_ACTIVE &&
counter < ehca_port_act_time;
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-11 15:20:01 +0000