[PATCH 02/13] IB/ehca: HW level, HW caps and MTU autodetection
From: Joachim Fenkes
Date: Mon Jul 09 2007 - 09:23:28 EST
In preparation for support of new eHCA2 features, change adapter probing:
- Hardware level is changed to encode major and minor chip version
- Hardware capabilities are queried from the firmware
- The maximum MTU is queried from the firmware instead of assuming a
fixed value
Signed-off-by: Joachim Fenkes <fenkes@xxxxxxxxxx>
---
drivers/infiniband/hw/ehca/ehca_av.c | 6 ++-
drivers/infiniband/hw/ehca/ehca_classes.h | 2 +
drivers/infiniband/hw/ehca/ehca_hca.c | 27 +++++++++++-
drivers/infiniband/hw/ehca/ehca_main.c | 62 ++++++++++++++++++++++++++---
drivers/infiniband/hw/ehca/hipz_hw.h | 18 ++++++++
5 files changed, 104 insertions(+), 11 deletions(-)
diff --git a/drivers/infiniband/hw/ehca/ehca_av.c b/drivers/infiniband/hw/ehca/ehca_av.c
index 0d6e2c4..3cd6bf3 100644
--- a/drivers/infiniband/hw/ehca/ehca_av.c
+++ b/drivers/infiniband/hw/ehca/ehca_av.c
@@ -118,7 +118,7 @@ struct ib_ah *ehca_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
}
memcpy(&av->av.grh.word_1, &gid, sizeof(gid));
}
- av->av.pmtu = EHCA_MAX_MTU;
+ av->av.pmtu = shca->max_mtu;
/* dgid comes in grh.word_3 */
memcpy(&av->av.grh.word_3, &ah_attr->grh.dgid,
@@ -137,6 +137,8 @@ int ehca_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
struct ehca_av *av;
struct ehca_ud_av new_ehca_av;
struct ehca_pd *my_pd = container_of(ah->pd, struct ehca_pd, ib_pd);
+ struct ehca_shca *shca = container_of(ah->pd->device, struct ehca_shca,
+ ib_device);
u32 cur_pid = current->tgid;
if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
@@ -192,7 +194,7 @@ int ehca_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
memcpy(&new_ehca_av.grh.word_1, &gid, sizeof(gid));
}
- new_ehca_av.pmtu = EHCA_MAX_MTU;
+ new_ehca_av.pmtu = shca->max_mtu;
memcpy(&new_ehca_av.grh.word_3, &ah_attr->grh.dgid,
sizeof(ah_attr->grh.dgid));
diff --git a/drivers/infiniband/hw/ehca/ehca_classes.h b/drivers/infiniband/hw/ehca/ehca_classes.h
index 1d286d3..35d948f 100644
--- a/drivers/infiniband/hw/ehca/ehca_classes.h
+++ b/drivers/infiniband/hw/ehca/ehca_classes.h
@@ -107,6 +107,8 @@ struct ehca_shca {
struct ehca_pd *pd;
struct h_galpas galpas;
struct mutex modify_mutex;
+ u64 hca_cap;
+ int max_mtu;
};
struct ehca_pd {
diff --git a/drivers/infiniband/hw/ehca/ehca_hca.c b/drivers/infiniband/hw/ehca/ehca_hca.c
index 32b55a4..b310de5 100644
--- a/drivers/infiniband/hw/ehca/ehca_hca.c
+++ b/drivers/infiniband/hw/ehca/ehca_hca.c
@@ -45,11 +45,25 @@
int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
{
- int ret = 0;
+ int i, ret = 0;
struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
ib_device);
struct hipz_query_hca *rblock;
+ static const u32 cap_mapping[] = {
+ IB_DEVICE_RESIZE_MAX_WR, HCA_CAP_WQE_RESIZE,
+ IB_DEVICE_BAD_PKEY_CNTR, HCA_CAP_BAD_P_KEY_CTR,
+ IB_DEVICE_BAD_QKEY_CNTR, HCA_CAP_Q_KEY_VIOL_CTR,
+ IB_DEVICE_RAW_MULTI, HCA_CAP_RAW_PACKET_MCAST,
+ IB_DEVICE_AUTO_PATH_MIG, HCA_CAP_AUTO_PATH_MIG,
+ IB_DEVICE_CHANGE_PHY_PORT, HCA_CAP_SQD_RTS_PORT_CHANGE,
+ IB_DEVICE_UD_AV_PORT_ENFORCE, HCA_CAP_AH_PORT_NR_CHECK,
+ IB_DEVICE_CURR_QP_STATE_MOD, HCA_CAP_CUR_QP_STATE_MOD,
+ IB_DEVICE_SHUTDOWN_PORT, HCA_CAP_SHUTDOWN_PORT,
+ IB_DEVICE_INIT_TYPE, HCA_CAP_INIT_TYPE,
+ IB_DEVICE_PORT_ACTIVE_EVENT, HCA_CAP_PORT_ACTIVE_EVENT,
+ };
+
rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
if (!rblock) {
ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
@@ -96,6 +110,13 @@ int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
props->max_total_mcast_qp_attach
= min_t(int, rblock->max_total_mcast_qp_attach, INT_MAX);
+ /* translate device capabilities */
+ props->device_cap_flags = IB_DEVICE_SYS_IMAGE_GUID |
+ IB_DEVICE_RC_RNR_NAK_GEN | IB_DEVICE_N_NOTIFY_CQ;
+ for (i = 0; i < ARRAY_SIZE(cap_mapping); i += 2)
+ if (rblock->hca_cap_indicators & cap_mapping[i + 1])
+ props->device_cap_flags |= cap_mapping[i];
+
query_device1:
ehca_free_fw_ctrlblock(rblock);
@@ -261,7 +282,7 @@ int ehca_modify_port(struct ib_device *ibdev,
}
if (mutex_lock_interruptible(&shca->modify_mutex))
- return -ERESTARTSYS;
+ return -ERESTARTSYS;
rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
if (!rblock) {
@@ -290,7 +311,7 @@ modify_port2:
ehca_free_fw_ctrlblock(rblock);
modify_port1:
- mutex_unlock(&shca->modify_mutex);
+ mutex_unlock(&shca->modify_mutex);
return ret;
}
diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c
index fea199f..befbb9c 100644
--- a/drivers/infiniband/hw/ehca/ehca_main.c
+++ b/drivers/infiniband/hw/ehca/ehca_main.c
@@ -205,11 +205,35 @@ static void ehca_destroy_slab_caches(void)
#define EHCA_HCAAVER EHCA_BMASK_IBM(32,39)
#define EHCA_REVID EHCA_BMASK_IBM(40,63)
+static struct cap_descr {
+ u64 mask;
+ char *descr;
+} hca_cap_descr[] = {
+ { HCA_CAP_AH_PORT_NR_CHECK, "HCA_CAP_AH_PORT_NR_CHECK" },
+ { HCA_CAP_ATOMIC, "HCA_CAP_ATOMIC" },
+ { HCA_CAP_AUTO_PATH_MIG, "HCA_CAP_AUTO_PATH_MIG" },
+ { HCA_CAP_BAD_P_KEY_CTR, "HCA_CAP_BAD_P_KEY_CTR" },
+ { HCA_CAP_SQD_RTS_PORT_CHANGE, "HCA_CAP_SQD_RTS_PORT_CHANGE" },
+ { HCA_CAP_CUR_QP_STATE_MOD, "HCA_CAP_CUR_QP_STATE_MOD" },
+ { HCA_CAP_INIT_TYPE, "HCA_CAP_INIT_TYPE" },
+ { HCA_CAP_PORT_ACTIVE_EVENT, "HCA_CAP_PORT_ACTIVE_EVENT" },
+ { HCA_CAP_Q_KEY_VIOL_CTR, "HCA_CAP_Q_KEY_VIOL_CTR" },
+ { HCA_CAP_WQE_RESIZE, "HCA_CAP_WQE_RESIZE" },
+ { HCA_CAP_RAW_PACKET_MCAST, "HCA_CAP_RAW_PACKET_MCAST" },
+ { HCA_CAP_SHUTDOWN_PORT, "HCA_CAP_SHUTDOWN_PORT" },
+ { HCA_CAP_RC_LL_QP, "HCA_CAP_RC_LL_QP" },
+ { HCA_CAP_SRQ, "HCA_CAP_SRQ" },
+ { HCA_CAP_UD_LL_QP, "HCA_CAP_UD_LL_QP" },
+ { HCA_CAP_RESIZE_MR, "HCA_CAP_RESIZE_MR" },
+ { HCA_CAP_MINI_QP, "HCA_CAP_MINI_QP" },
+};
+
int ehca_sense_attributes(struct ehca_shca *shca)
{
- int ret = 0;
+ int i, ret = 0;
u64 h_ret;
struct hipz_query_hca *rblock;
+ struct hipz_query_port *port;
rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
if (!rblock) {
@@ -222,7 +246,7 @@ int ehca_sense_attributes(struct ehca_shca *shca)
ehca_gen_err("Cannot query device properties. h_ret=%lx",
h_ret);
ret = -EPERM;
- goto num_ports1;
+ goto sense_attributes1;
}
if (ehca_nr_ports == 1)
@@ -242,18 +266,44 @@ int ehca_sense_attributes(struct ehca_shca *shca)
ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid);
if ((hcaaver == 1) && (revid == 0))
- shca->hw_level = 0;
+ shca->hw_level = 0x11;
else if ((hcaaver == 1) && (revid == 1))
- shca->hw_level = 1;
+ shca->hw_level = 0x12;
else if ((hcaaver == 1) && (revid == 2))
- shca->hw_level = 2;
+ shca->hw_level = 0x13;
+ else if ((hcaaver == 2) && (revid == 0))
+ shca->hw_level = 0x21;
+ else if ((hcaaver == 2) && (revid == 0x10))
+ shca->hw_level = 0x22;
+ else {
+ ehca_gen_warn("unknown hardware version"
+ " - assuming default level");
+ shca->hw_level = 0x22;
+ }
}
ehca_gen_dbg(" ... hardware level=%x", shca->hw_level);
shca->sport[0].rate = IB_RATE_30_GBPS;
shca->sport[1].rate = IB_RATE_30_GBPS;
-num_ports1:
+ shca->hca_cap = rblock->hca_cap_indicators;
+ ehca_gen_dbg(" ... HCA capabilities:");
+ for (i = 0; i < ARRAY_SIZE(hca_cap_descr); i++)
+ if (EHCA_BMASK_GET(hca_cap_descr[i].mask, shca->hca_cap))
+ ehca_gen_dbg(" %s", hca_cap_descr[i].descr);
+
+ port = (struct hipz_query_port*)rblock;
+ h_ret = hipz_h_query_port(shca->ipz_hca_handle, 1, port);
+ if (h_ret != H_SUCCESS) {
+ ehca_gen_err("Cannot query port properties. h_ret=%lx",
+ h_ret);
+ ret = -EPERM;
+ goto sense_attributes1;
+ }
+
+ shca->max_mtu = port->max_mtu;
+
+sense_attributes1:
ehca_free_fw_ctrlblock(rblock);
return ret;
}
diff --git a/drivers/infiniband/hw/ehca/hipz_hw.h b/drivers/infiniband/hw/ehca/hipz_hw.h
index fad9136..9fe8367 100644
--- a/drivers/infiniband/hw/ehca/hipz_hw.h
+++ b/drivers/infiniband/hw/ehca/hipz_hw.h
@@ -360,6 +360,24 @@ struct hipz_query_hca {
u32 max_neq;
} __attribute__ ((packed));
+#define HCA_CAP_AH_PORT_NR_CHECK EHCA_BMASK_IBM(0,0)
+#define HCA_CAP_ATOMIC EHCA_BMASK_IBM(1,1)
+#define HCA_CAP_AUTO_PATH_MIG EHCA_BMASK_IBM(2,2)
+#define HCA_CAP_BAD_P_KEY_CTR EHCA_BMASK_IBM(3,3)
+#define HCA_CAP_SQD_RTS_PORT_CHANGE EHCA_BMASK_IBM(4,4)
+#define HCA_CAP_CUR_QP_STATE_MOD EHCA_BMASK_IBM(5,5)
+#define HCA_CAP_INIT_TYPE EHCA_BMASK_IBM(6,6)
+#define HCA_CAP_PORT_ACTIVE_EVENT EHCA_BMASK_IBM(7,7)
+#define HCA_CAP_Q_KEY_VIOL_CTR EHCA_BMASK_IBM(8,8)
+#define HCA_CAP_WQE_RESIZE EHCA_BMASK_IBM(9,9)
+#define HCA_CAP_RAW_PACKET_MCAST EHCA_BMASK_IBM(10,10)
+#define HCA_CAP_SHUTDOWN_PORT EHCA_BMASK_IBM(11,11)
+#define HCA_CAP_RC_LL_QP EHCA_BMASK_IBM(12,12)
+#define HCA_CAP_SRQ EHCA_BMASK_IBM(13,13)
+#define HCA_CAP_UD_LL_QP EHCA_BMASK_IBM(16,16)
+#define HCA_CAP_RESIZE_MR EHCA_BMASK_IBM(17,17)
+#define HCA_CAP_MINI_QP EHCA_BMASK_IBM(18,18)
+
/* query port response block */
struct hipz_query_port {
u32 state;
--
1.5.2
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/