IB/ehca: Add driver for IBM eHCA InfiniBand adapters
Add a driver for IBM GX bus InfiniBand adapters, which are usable with
some pSeries/System p systems.
Signed-off-by: Heiko J Schick <schickhj.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/Kconfig b/drivers/infiniband/Kconfig
index 69a53d4..fd2d528 100644
--- a/drivers/infiniband/Kconfig
+++ b/drivers/infiniband/Kconfig
@@ -36,6 +36,7 @@
source "drivers/infiniband/hw/mthca/Kconfig"
source "drivers/infiniband/hw/ipath/Kconfig"
+source "drivers/infiniband/hw/ehca/Kconfig"
source "drivers/infiniband/ulp/ipoib/Kconfig"
diff --git a/drivers/infiniband/Makefile b/drivers/infiniband/Makefile
index c7ff58c..893bee0 100644
--- a/drivers/infiniband/Makefile
+++ b/drivers/infiniband/Makefile
@@ -1,6 +1,7 @@
obj-$(CONFIG_INFINIBAND) += core/
obj-$(CONFIG_INFINIBAND_MTHCA) += hw/mthca/
obj-$(CONFIG_IPATH_CORE) += hw/ipath/
+obj-$(CONFIG_INFINIBAND_EHCA) += hw/ehca/
obj-$(CONFIG_INFINIBAND_IPOIB) += ulp/ipoib/
obj-$(CONFIG_INFINIBAND_SRP) += ulp/srp/
obj-$(CONFIG_INFINIBAND_ISER) += ulp/iser/
diff --git a/drivers/infiniband/hw/ehca/Kconfig b/drivers/infiniband/hw/ehca/Kconfig
new file mode 100644
index 0000000..922389b
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/Kconfig
@@ -0,0 +1,16 @@
+config INFINIBAND_EHCA
+ tristate "eHCA support"
+ depends on IBMEBUS && INFINIBAND
+ ---help---
+ This driver supports the IBM pSeries eHCA InfiniBand adapter.
+
+ To compile the driver as a module, choose M here. The module
+ will be called ib_ehca.
+
+config INFINIBAND_EHCA_SCALING
+ bool "Scaling support (EXPERIMENTAL)"
+ depends on IBMEBUS && INFINIBAND_EHCA && HOTPLUG_CPU && EXPERIMENTAL
+ ---help---
+ eHCA scaling support schedules the CQ callbacks to different CPUs.
+
+ To enable this feature choose Y here.
diff --git a/drivers/infiniband/hw/ehca/Makefile b/drivers/infiniband/hw/ehca/Makefile
new file mode 100644
index 0000000..74d284e
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/Makefile
@@ -0,0 +1,16 @@
+# Authors: Heiko J Schick <schickhj@de.ibm.com>
+# Christoph Raisch <raisch@de.ibm.com>
+# Joachim Fenkes <fenkes@de.ibm.com>
+#
+# Copyright (c) 2005 IBM Corporation
+#
+# All rights reserved.
+#
+# This source code is distributed under a dual license of GPL v2.0 and OpenIB BSD.
+
+obj-$(CONFIG_INFINIBAND_EHCA) += ib_ehca.o
+
+ib_ehca-objs = ehca_main.o ehca_hca.o ehca_mcast.o ehca_pd.o ehca_av.o ehca_eq.o \
+ ehca_cq.o ehca_qp.o ehca_sqp.o ehca_mrmw.o ehca_reqs.o ehca_irq.o \
+ ehca_uverbs.o ipz_pt_fn.o hcp_if.o hcp_phyp.o
+
diff --git a/drivers/infiniband/hw/ehca/ehca_av.c b/drivers/infiniband/hw/ehca/ehca_av.c
new file mode 100644
index 0000000..3bac197
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_av.c
@@ -0,0 +1,271 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * adress vector functions
+ *
+ * Authors: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ * Khadija Souissi <souissik@de.ibm.com>
+ * Reinhard Ernst <rernst@de.ibm.com>
+ * Christoph Raisch <raisch@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#include <asm/current.h>
+
+#include "ehca_tools.h"
+#include "ehca_iverbs.h"
+#include "hcp_if.h"
+
+static struct kmem_cache *av_cache;
+
+struct ib_ah *ehca_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
+{
+ int ret;
+ struct ehca_av *av;
+ struct ehca_shca *shca = container_of(pd->device, struct ehca_shca,
+ ib_device);
+
+ av = kmem_cache_alloc(av_cache, SLAB_KERNEL);
+ if (!av) {
+ ehca_err(pd->device, "Out of memory pd=%p ah_attr=%p",
+ pd, ah_attr);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ av->av.sl = ah_attr->sl;
+ av->av.dlid = ah_attr->dlid;
+ av->av.slid_path_bits = ah_attr->src_path_bits;
+
+ if (ehca_static_rate < 0) {
+ int ah_mult = ib_rate_to_mult(ah_attr->static_rate);
+ int ehca_mult =
+ ib_rate_to_mult(shca->sport[ah_attr->port_num].rate );
+
+ if (ah_mult >= ehca_mult)
+ av->av.ipd = 0;
+ else
+ av->av.ipd = (ah_mult > 0) ?
+ ((ehca_mult - 1) / ah_mult) : 0;
+ } else
+ av->av.ipd = ehca_static_rate;
+
+ av->av.lnh = ah_attr->ah_flags;
+ av->av.grh.word_0 = EHCA_BMASK_SET(GRH_IPVERSION_MASK, 6);
+ av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_TCLASS_MASK,
+ ah_attr->grh.traffic_class);
+ av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_FLOWLABEL_MASK,
+ ah_attr->grh.flow_label);
+ av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_HOPLIMIT_MASK,
+ ah_attr->grh.hop_limit);
+ av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_NEXTHEADER_MASK, 0x1B);
+ /* set sgid in grh.word_1 */
+ if (ah_attr->ah_flags & IB_AH_GRH) {
+ int rc;
+ struct ib_port_attr port_attr;
+ union ib_gid gid;
+ memset(&port_attr, 0, sizeof(port_attr));
+ rc = ehca_query_port(pd->device, ah_attr->port_num,
+ &port_attr);
+ if (rc) { /* invalid port number */
+ ret = -EINVAL;
+ ehca_err(pd->device, "Invalid port number "
+ "ehca_query_port() returned %x "
+ "pd=%p ah_attr=%p", rc, pd, ah_attr);
+ goto create_ah_exit1;
+ }
+ memset(&gid, 0, sizeof(gid));
+ rc = ehca_query_gid(pd->device,
+ ah_attr->port_num,
+ ah_attr->grh.sgid_index, &gid);
+ if (rc) {
+ ret = -EINVAL;
+ ehca_err(pd->device, "Failed to retrieve sgid "
+ "ehca_query_gid() returned %x "
+ "pd=%p ah_attr=%p", rc, pd, ah_attr);
+ goto create_ah_exit1;
+ }
+ memcpy(&av->av.grh.word_1, &gid, sizeof(gid));
+ }
+ /* for the time being we use a hard coded PMTU of 2048 Bytes */
+ av->av.pmtu = 4;
+
+ /* dgid comes in grh.word_3 */
+ memcpy(&av->av.grh.word_3, &ah_attr->grh.dgid,
+ sizeof(ah_attr->grh.dgid));
+
+ return &av->ib_ah;
+
+create_ah_exit1:
+ kmem_cache_free(av_cache, av);
+
+ return ERR_PTR(ret);
+}
+
+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);
+ u32 cur_pid = current->tgid;
+
+ if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
+ my_pd->ownpid != cur_pid) {
+ ehca_err(ah->device, "Invalid caller pid=%x ownpid=%x",
+ cur_pid, my_pd->ownpid);
+ return -EINVAL;
+ }
+
+ memset(&new_ehca_av, 0, sizeof(new_ehca_av));
+ new_ehca_av.sl = ah_attr->sl;
+ new_ehca_av.dlid = ah_attr->dlid;
+ new_ehca_av.slid_path_bits = ah_attr->src_path_bits;
+ new_ehca_av.ipd = ah_attr->static_rate;
+ new_ehca_av.lnh = EHCA_BMASK_SET(GRH_FLAG_MASK,
+ (ah_attr->ah_flags & IB_AH_GRH) > 0);
+ new_ehca_av.grh.word_0 = EHCA_BMASK_SET(GRH_TCLASS_MASK,
+ ah_attr->grh.traffic_class);
+ new_ehca_av.grh.word_0 |= EHCA_BMASK_SET(GRH_FLOWLABEL_MASK,
+ ah_attr->grh.flow_label);
+ new_ehca_av.grh.word_0 |= EHCA_BMASK_SET(GRH_HOPLIMIT_MASK,
+ ah_attr->grh.hop_limit);
+ new_ehca_av.grh.word_0 |= EHCA_BMASK_SET(GRH_NEXTHEADER_MASK, 0x1b);
+
+ /* set sgid in grh.word_1 */
+ if (ah_attr->ah_flags & IB_AH_GRH) {
+ int rc;
+ struct ib_port_attr port_attr;
+ union ib_gid gid;
+ memset(&port_attr, 0, sizeof(port_attr));
+ rc = ehca_query_port(ah->device, ah_attr->port_num,
+ &port_attr);
+ if (rc) { /* invalid port number */
+ ehca_err(ah->device, "Invalid port number "
+ "ehca_query_port() returned %x "
+ "ah=%p ah_attr=%p port_num=%x",
+ rc, ah, ah_attr, ah_attr->port_num);
+ return -EINVAL;
+ }
+ memset(&gid, 0, sizeof(gid));
+ rc = ehca_query_gid(ah->device,
+ ah_attr->port_num,
+ ah_attr->grh.sgid_index, &gid);
+ if (rc) {
+ ehca_err(ah->device, "Failed to retrieve sgid "
+ "ehca_query_gid() returned %x "
+ "ah=%p ah_attr=%p port_num=%x "
+ "sgid_index=%x",
+ rc, ah, ah_attr, ah_attr->port_num,
+ ah_attr->grh.sgid_index);
+ return -EINVAL;
+ }
+ memcpy(&new_ehca_av.grh.word_1, &gid, sizeof(gid));
+ }
+
+ new_ehca_av.pmtu = 4; /* see also comment in create_ah() */
+
+ memcpy(&new_ehca_av.grh.word_3, &ah_attr->grh.dgid,
+ sizeof(ah_attr->grh.dgid));
+
+ av = container_of(ah, struct ehca_av, ib_ah);
+ av->av = new_ehca_av;
+
+ return 0;
+}
+
+int ehca_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
+{
+ struct ehca_av *av = container_of(ah, struct ehca_av, ib_ah);
+ struct ehca_pd *my_pd = container_of(ah->pd, struct ehca_pd, ib_pd);
+ u32 cur_pid = current->tgid;
+
+ if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
+ my_pd->ownpid != cur_pid) {
+ ehca_err(ah->device, "Invalid caller pid=%x ownpid=%x",
+ cur_pid, my_pd->ownpid);
+ return -EINVAL;
+ }
+
+ memcpy(&ah_attr->grh.dgid, &av->av.grh.word_3,
+ sizeof(ah_attr->grh.dgid));
+ ah_attr->sl = av->av.sl;
+
+ ah_attr->dlid = av->av.dlid;
+
+ ah_attr->src_path_bits = av->av.slid_path_bits;
+ ah_attr->static_rate = av->av.ipd;
+ ah_attr->ah_flags = EHCA_BMASK_GET(GRH_FLAG_MASK, av->av.lnh);
+ ah_attr->grh.traffic_class = EHCA_BMASK_GET(GRH_TCLASS_MASK,
+ av->av.grh.word_0);
+ ah_attr->grh.hop_limit = EHCA_BMASK_GET(GRH_HOPLIMIT_MASK,
+ av->av.grh.word_0);
+ ah_attr->grh.flow_label = EHCA_BMASK_GET(GRH_FLOWLABEL_MASK,
+ av->av.grh.word_0);
+
+ return 0;
+}
+
+int ehca_destroy_ah(struct ib_ah *ah)
+{
+ struct ehca_pd *my_pd = container_of(ah->pd, struct ehca_pd, ib_pd);
+ u32 cur_pid = current->tgid;
+
+ if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
+ my_pd->ownpid != cur_pid) {
+ ehca_err(ah->device, "Invalid caller pid=%x ownpid=%x",
+ cur_pid, my_pd->ownpid);
+ return -EINVAL;
+ }
+
+ kmem_cache_free(av_cache, container_of(ah, struct ehca_av, ib_ah));
+
+ return 0;
+}
+
+int ehca_init_av_cache(void)
+{
+ av_cache = kmem_cache_create("ehca_cache_av",
+ sizeof(struct ehca_av), 0,
+ SLAB_HWCACHE_ALIGN,
+ NULL, NULL);
+ if (!av_cache)
+ return -ENOMEM;
+ return 0;
+}
+
+void ehca_cleanup_av_cache(void)
+{
+ if (av_cache)
+ kmem_cache_destroy(av_cache);
+}
diff --git a/drivers/infiniband/hw/ehca/ehca_classes.h b/drivers/infiniband/hw/ehca/ehca_classes.h
new file mode 100644
index 0000000..1c72203
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_classes.h
@@ -0,0 +1,346 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * Struct definition for eHCA internal structures
+ *
+ * Authors: Heiko J Schick <schickhj@de.ibm.com>
+ * Christoph Raisch <raisch@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __EHCA_CLASSES_H__
+#define __EHCA_CLASSES_H__
+
+#include "ehca_classes.h"
+#include "ipz_pt_fn.h"
+
+struct ehca_module;
+struct ehca_qp;
+struct ehca_cq;
+struct ehca_eq;
+struct ehca_mr;
+struct ehca_mw;
+struct ehca_pd;
+struct ehca_av;
+
+#ifdef CONFIG_PPC64
+#include "ehca_classes_pSeries.h"
+#endif
+
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_user_verbs.h>
+
+#include "ehca_irq.h"
+
+struct ehca_eq {
+ u32 length;
+ struct ipz_queue ipz_queue;
+ struct ipz_eq_handle ipz_eq_handle;
+ struct work_struct work;
+ struct h_galpas galpas;
+ int is_initialized;
+ struct ehca_pfeq pf;
+ spinlock_t spinlock;
+ struct tasklet_struct interrupt_task;
+ u32 ist;
+};
+
+struct ehca_sport {
+ struct ib_cq *ibcq_aqp1;
+ struct ib_qp *ibqp_aqp1;
+ enum ib_rate rate;
+ enum ib_port_state port_state;
+};
+
+struct ehca_shca {
+ struct ib_device ib_device;
+ struct ibmebus_dev *ibmebus_dev;
+ u8 num_ports;
+ int hw_level;
+ struct list_head shca_list;
+ struct ipz_adapter_handle ipz_hca_handle;
+ struct ehca_sport sport[2];
+ struct ehca_eq eq;
+ struct ehca_eq neq;
+ struct ehca_mr *maxmr;
+ struct ehca_pd *pd;
+ struct h_galpas galpas;
+};
+
+struct ehca_pd {
+ struct ib_pd ib_pd;
+ struct ipz_pd fw_pd;
+ u32 ownpid;
+};
+
+struct ehca_qp {
+ struct ib_qp ib_qp;
+ u32 qp_type;
+ struct ipz_queue ipz_squeue;
+ struct ipz_queue ipz_rqueue;
+ struct h_galpas galpas;
+ u32 qkey;
+ u32 real_qp_num;
+ u32 token;
+ spinlock_t spinlock_s;
+ spinlock_t spinlock_r;
+ u32 sq_max_inline_data_size;
+ struct ipz_qp_handle ipz_qp_handle;
+ struct ehca_pfqp pf;
+ struct ib_qp_init_attr init_attr;
+ u64 uspace_squeue;
+ u64 uspace_rqueue;
+ u64 uspace_fwh;
+ struct ehca_cq *send_cq;
+ struct ehca_cq *recv_cq;
+ unsigned int sqerr_purgeflag;
+ struct hlist_node list_entries;
+};
+
+/* must be power of 2 */
+#define QP_HASHTAB_LEN 8
+
+struct ehca_cq {
+ struct ib_cq ib_cq;
+ struct ipz_queue ipz_queue;
+ struct h_galpas galpas;
+ spinlock_t spinlock;
+ u32 cq_number;
+ u32 token;
+ u32 nr_of_entries;
+ struct ipz_cq_handle ipz_cq_handle;
+ struct ehca_pfcq pf;
+ spinlock_t cb_lock;
+ u64 uspace_queue;
+ u64 uspace_fwh;
+ struct hlist_head qp_hashtab[QP_HASHTAB_LEN];
+ struct list_head entry;
+ u32 nr_callbacks;
+ spinlock_t task_lock;
+ u32 ownpid;
+};
+
+enum ehca_mr_flag {
+ EHCA_MR_FLAG_FMR = 0x80000000, /* FMR, created with ehca_alloc_fmr */
+ EHCA_MR_FLAG_MAXMR = 0x40000000, /* max-MR */
+};
+
+struct ehca_mr {
+ union {
+ struct ib_mr ib_mr; /* must always be first in ehca_mr */
+ struct ib_fmr ib_fmr; /* must always be first in ehca_mr */
+ } ib;
+ spinlock_t mrlock;
+
+ enum ehca_mr_flag flags;
+ u32 num_pages; /* number of MR pages */
+ u32 num_4k; /* number of 4k "page" portions to form MR */
+ int acl; /* ACL (stored here for usage in reregister) */
+ u64 *start; /* virtual start address (stored here for */
+ /* usage in reregister) */
+ u64 size; /* size (stored here for usage in reregister) */
+ u32 fmr_page_size; /* page size for FMR */
+ u32 fmr_max_pages; /* max pages for FMR */
+ u32 fmr_max_maps; /* max outstanding maps for FMR */
+ u32 fmr_map_cnt; /* map counter for FMR */
+ /* fw specific data */
+ struct ipz_mrmw_handle ipz_mr_handle; /* MR handle for h-calls */
+ struct h_galpas galpas;
+ /* data for userspace bridge */
+ u32 nr_of_pages;
+ void *pagearray;
+};
+
+struct ehca_mw {
+ struct ib_mw ib_mw; /* gen2 mw, must always be first in ehca_mw */
+ spinlock_t mwlock;
+
+ u8 never_bound; /* indication MW was never bound */
+ struct ipz_mrmw_handle ipz_mw_handle; /* MW handle for h-calls */
+ struct h_galpas galpas;
+};
+
+enum ehca_mr_pgi_type {
+ EHCA_MR_PGI_PHYS = 1, /* type of ehca_reg_phys_mr,
+ * ehca_rereg_phys_mr,
+ * ehca_reg_internal_maxmr */
+ EHCA_MR_PGI_USER = 2, /* type of ehca_reg_user_mr */
+ EHCA_MR_PGI_FMR = 3 /* type of ehca_map_phys_fmr */
+};
+
+struct ehca_mr_pginfo {
+ enum ehca_mr_pgi_type type;
+ u64 num_pages;
+ u64 page_cnt;
+ u64 num_4k; /* number of 4k "page" portions */
+ u64 page_4k_cnt; /* counter for 4k "page" portions */
+ u64 next_4k; /* next 4k "page" portion in buffer/chunk/listelem */
+
+ /* type EHCA_MR_PGI_PHYS section */
+ int num_phys_buf;
+ struct ib_phys_buf *phys_buf_array;
+ u64 next_buf;
+
+ /* type EHCA_MR_PGI_USER section */
+ struct ib_umem *region;
+ struct ib_umem_chunk *next_chunk;
+ u64 next_nmap;
+
+ /* type EHCA_MR_PGI_FMR section */
+ u64 *page_list;
+ u64 next_listelem;
+ /* next_4k also used within EHCA_MR_PGI_FMR */
+};
+
+/* output parameters for MR/FMR hipz calls */
+struct ehca_mr_hipzout_parms {
+ struct ipz_mrmw_handle handle;
+ u32 lkey;
+ u32 rkey;
+ u64 len;
+ u64 vaddr;
+ u32 acl;
+};
+
+/* output parameters for MW hipz calls */
+struct ehca_mw_hipzout_parms {
+ struct ipz_mrmw_handle handle;
+ u32 rkey;
+};
+
+struct ehca_av {
+ struct ib_ah ib_ah;
+ struct ehca_ud_av av;
+};
+
+struct ehca_ucontext {
+ struct ib_ucontext ib_ucontext;
+};
+
+struct ehca_module *ehca_module_new(void);
+
+int ehca_module_delete(struct ehca_module *me);
+
+int ehca_eq_ctor(struct ehca_eq *eq);
+
+int ehca_eq_dtor(struct ehca_eq *eq);
+
+struct ehca_shca *ehca_shca_new(void);
+
+int ehca_shca_delete(struct ehca_shca *me);
+
+struct ehca_sport *ehca_sport_new(struct ehca_shca *anchor);
+
+int ehca_init_pd_cache(void);
+void ehca_cleanup_pd_cache(void);
+int ehca_init_cq_cache(void);
+void ehca_cleanup_cq_cache(void);
+int ehca_init_qp_cache(void);
+void ehca_cleanup_qp_cache(void);
+int ehca_init_av_cache(void);
+void ehca_cleanup_av_cache(void);
+int ehca_init_mrmw_cache(void);
+void ehca_cleanup_mrmw_cache(void);
+
+extern spinlock_t ehca_qp_idr_lock;
+extern spinlock_t ehca_cq_idr_lock;
+extern struct idr ehca_qp_idr;
+extern struct idr ehca_cq_idr;
+
+extern int ehca_static_rate;
+extern int ehca_port_act_time;
+extern int ehca_use_hp_mr;
+
+struct ipzu_queue_resp {
+ u64 queue; /* points to first queue entry */
+ u32 qe_size; /* queue entry size */
+ u32 act_nr_of_sg;
+ u32 queue_length; /* queue length allocated in bytes */
+ u32 pagesize;
+ u32 toggle_state;
+ u32 dummy; /* padding for 8 byte alignment */
+};
+
+struct ehca_create_cq_resp {
+ u32 cq_number;
+ u32 token;
+ struct ipzu_queue_resp ipz_queue;
+ struct h_galpas galpas;
+};
+
+struct ehca_create_qp_resp {
+ u32 qp_num;
+ u32 token;
+ u32 qp_type;
+ u32 qkey;
+ /* qp_num assigned by ehca: sqp0/1 may have got different numbers */
+ u32 real_qp_num;
+ u32 dummy; /* padding for 8 byte alignment */
+ struct ipzu_queue_resp ipz_squeue;
+ struct ipzu_queue_resp ipz_rqueue;
+ struct h_galpas galpas;
+};
+
+struct ehca_alloc_cq_parms {
+ u32 nr_cqe;
+ u32 act_nr_of_entries;
+ u32 act_pages;
+ struct ipz_eq_handle eq_handle;
+};
+
+struct ehca_alloc_qp_parms {
+ int servicetype;
+ int sigtype;
+ int daqp_ctrl;
+ int max_send_sge;
+ int max_recv_sge;
+ int ud_av_l_key_ctl;
+
+ u16 act_nr_send_wqes;
+ u16 act_nr_recv_wqes;
+ u8 act_nr_recv_sges;
+ u8 act_nr_send_sges;
+
+ u32 nr_rq_pages;
+ u32 nr_sq_pages;
+
+ struct ipz_eq_handle ipz_eq_handle;
+ struct ipz_pd pd;
+};
+
+int ehca_cq_assign_qp(struct ehca_cq *cq, struct ehca_qp *qp);
+int ehca_cq_unassign_qp(struct ehca_cq *cq, unsigned int qp_num);
+struct ehca_qp* ehca_cq_get_qp(struct ehca_cq *cq, int qp_num);
+
+#endif
diff --git a/drivers/infiniband/hw/ehca/ehca_classes_pSeries.h b/drivers/infiniband/hw/ehca/ehca_classes_pSeries.h
new file mode 100644
index 0000000..5665f21
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_classes_pSeries.h
@@ -0,0 +1,236 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * pSeries interface definitions
+ *
+ * Authors: Waleri Fomin <fomin@de.ibm.com>
+ * Christoph Raisch <raisch@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __EHCA_CLASSES_PSERIES_H__
+#define __EHCA_CLASSES_PSERIES_H__
+
+#include "hcp_phyp.h"
+#include "ipz_pt_fn.h"
+
+
+struct ehca_pfqp {
+ struct ipz_qpt sqpt;
+ struct ipz_qpt rqpt;
+};
+
+struct ehca_pfcq {
+ struct ipz_qpt qpt;
+ u32 cqnr;
+};
+
+struct ehca_pfeq {
+ struct ipz_qpt qpt;
+ struct h_galpa galpa;
+ u32 eqnr;
+};
+
+struct ipz_adapter_handle {
+ u64 handle;
+};
+
+struct ipz_cq_handle {
+ u64 handle;
+};
+
+struct ipz_eq_handle {
+ u64 handle;
+};
+
+struct ipz_qp_handle {
+ u64 handle;
+};
+struct ipz_mrmw_handle {
+ u64 handle;
+};
+
+struct ipz_pd {
+ u32 value;
+};
+
+struct hcp_modify_qp_control_block {
+ u32 qkey; /* 00 */
+ u32 rdd; /* reliable datagram domain */
+ u32 send_psn; /* 02 */
+ u32 receive_psn; /* 03 */
+ u32 prim_phys_port; /* 04 */
+ u32 alt_phys_port; /* 05 */
+ u32 prim_p_key_idx; /* 06 */
+ u32 alt_p_key_idx; /* 07 */
+ u32 rdma_atomic_ctrl; /* 08 */
+ u32 qp_state; /* 09 */
+ u32 reserved_10; /* 10 */
+ u32 rdma_nr_atomic_resp_res; /* 11 */
+ u32 path_migration_state; /* 12 */
+ u32 rdma_atomic_outst_dest_qp; /* 13 */
+ u32 dest_qp_nr; /* 14 */
+ u32 min_rnr_nak_timer_field; /* 15 */
+ u32 service_level; /* 16 */
+ u32 send_grh_flag; /* 17 */
+ u32 retry_count; /* 18 */
+ u32 timeout; /* 19 */
+ u32 path_mtu; /* 20 */
+ u32 max_static_rate; /* 21 */
+ u32 dlid; /* 22 */
+ u32 rnr_retry_count; /* 23 */
+ u32 source_path_bits; /* 24 */
+ u32 traffic_class; /* 25 */
+ u32 hop_limit; /* 26 */
+ u32 source_gid_idx; /* 27 */
+ u32 flow_label; /* 28 */
+ u32 reserved_29; /* 29 */
+ union { /* 30 */
+ u64 dw[2];
+ u8 byte[16];
+ } dest_gid;
+ u32 service_level_al; /* 34 */
+ u32 send_grh_flag_al; /* 35 */
+ u32 retry_count_al; /* 36 */
+ u32 timeout_al; /* 37 */
+ u32 max_static_rate_al; /* 38 */
+ u32 dlid_al; /* 39 */
+ u32 rnr_retry_count_al; /* 40 */
+ u32 source_path_bits_al; /* 41 */
+ u32 traffic_class_al; /* 42 */
+ u32 hop_limit_al; /* 43 */
+ u32 source_gid_idx_al; /* 44 */
+ u32 flow_label_al; /* 45 */
+ u32 reserved_46; /* 46 */
+ u32 reserved_47; /* 47 */
+ union { /* 48 */
+ u64 dw[2];
+ u8 byte[16];
+ } dest_gid_al;
+ u32 max_nr_outst_send_wr; /* 52 */
+ u32 max_nr_outst_recv_wr; /* 53 */
+ u32 disable_ete_credit_check; /* 54 */
+ u32 qp_number; /* 55 */
+ u64 send_queue_handle; /* 56 */
+ u64 recv_queue_handle; /* 58 */
+ u32 actual_nr_sges_in_sq_wqe; /* 60 */
+ u32 actual_nr_sges_in_rq_wqe; /* 61 */
+ u32 qp_enable; /* 62 */
+ u32 curr_srq_limit; /* 63 */
+ u64 qp_aff_asyn_ev_log_reg; /* 64 */
+ u64 shared_rq_hndl; /* 66 */
+ u64 trigg_doorbell_qp_hndl; /* 68 */
+ u32 reserved_70_127[58]; /* 70 */
+};
+
+#define MQPCB_MASK_QKEY EHCA_BMASK_IBM(0,0)
+#define MQPCB_MASK_SEND_PSN EHCA_BMASK_IBM(2,2)
+#define MQPCB_MASK_RECEIVE_PSN EHCA_BMASK_IBM(3,3)
+#define MQPCB_MASK_PRIM_PHYS_PORT EHCA_BMASK_IBM(4,4)
+#define MQPCB_PRIM_PHYS_PORT EHCA_BMASK_IBM(24,31)
+#define MQPCB_MASK_ALT_PHYS_PORT EHCA_BMASK_IBM(5,5)
+#define MQPCB_MASK_PRIM_P_KEY_IDX EHCA_BMASK_IBM(6,6)
+#define MQPCB_PRIM_P_KEY_IDX EHCA_BMASK_IBM(24,31)
+#define MQPCB_MASK_ALT_P_KEY_IDX EHCA_BMASK_IBM(7,7)
+#define MQPCB_MASK_RDMA_ATOMIC_CTRL EHCA_BMASK_IBM(8,8)
+#define MQPCB_MASK_QP_STATE EHCA_BMASK_IBM(9,9)
+#define MQPCB_QP_STATE EHCA_BMASK_IBM(24,31)
+#define MQPCB_MASK_RDMA_NR_ATOMIC_RESP_RES EHCA_BMASK_IBM(11,11)
+#define MQPCB_MASK_PATH_MIGRATION_STATE EHCA_BMASK_IBM(12,12)
+#define MQPCB_MASK_RDMA_ATOMIC_OUTST_DEST_QP EHCA_BMASK_IBM(13,13)
+#define MQPCB_MASK_DEST_QP_NR EHCA_BMASK_IBM(14,14)
+#define MQPCB_MASK_MIN_RNR_NAK_TIMER_FIELD EHCA_BMASK_IBM(15,15)
+#define MQPCB_MASK_SERVICE_LEVEL EHCA_BMASK_IBM(16,16)
+#define MQPCB_MASK_SEND_GRH_FLAG EHCA_BMASK_IBM(17,17)
+#define MQPCB_MASK_RETRY_COUNT EHCA_BMASK_IBM(18,18)
+#define MQPCB_MASK_TIMEOUT EHCA_BMASK_IBM(19,19)
+#define MQPCB_MASK_PATH_MTU EHCA_BMASK_IBM(20,20)
+#define MQPCB_PATH_MTU EHCA_BMASK_IBM(24,31)
+#define MQPCB_MASK_MAX_STATIC_RATE EHCA_BMASK_IBM(21,21)
+#define MQPCB_MAX_STATIC_RATE EHCA_BMASK_IBM(24,31)
+#define MQPCB_MASK_DLID EHCA_BMASK_IBM(22,22)
+#define MQPCB_DLID EHCA_BMASK_IBM(16,31)
+#define MQPCB_MASK_RNR_RETRY_COUNT EHCA_BMASK_IBM(23,23)
+#define MQPCB_RNR_RETRY_COUNT EHCA_BMASK_IBM(29,31)
+#define MQPCB_MASK_SOURCE_PATH_BITS EHCA_BMASK_IBM(24,24)
+#define MQPCB_SOURCE_PATH_BITS EHCA_BMASK_IBM(25,31)
+#define MQPCB_MASK_TRAFFIC_CLASS EHCA_BMASK_IBM(25,25)
+#define MQPCB_TRAFFIC_CLASS EHCA_BMASK_IBM(24,31)
+#define MQPCB_MASK_HOP_LIMIT EHCA_BMASK_IBM(26,26)
+#define MQPCB_HOP_LIMIT EHCA_BMASK_IBM(24,31)
+#define MQPCB_MASK_SOURCE_GID_IDX EHCA_BMASK_IBM(27,27)
+#define MQPCB_SOURCE_GID_IDX EHCA_BMASK_IBM(24,31)
+#define MQPCB_MASK_FLOW_LABEL EHCA_BMASK_IBM(28,28)
+#define MQPCB_FLOW_LABEL EHCA_BMASK_IBM(12,31)
+#define MQPCB_MASK_DEST_GID EHCA_BMASK_IBM(30,30)
+#define MQPCB_MASK_SERVICE_LEVEL_AL EHCA_BMASK_IBM(31,31)
+#define MQPCB_SERVICE_LEVEL_AL EHCA_BMASK_IBM(28,31)
+#define MQPCB_MASK_SEND_GRH_FLAG_AL EHCA_BMASK_IBM(32,32)
+#define MQPCB_SEND_GRH_FLAG_AL EHCA_BMASK_IBM(31,31)
+#define MQPCB_MASK_RETRY_COUNT_AL EHCA_BMASK_IBM(33,33)
+#define MQPCB_RETRY_COUNT_AL EHCA_BMASK_IBM(29,31)
+#define MQPCB_MASK_TIMEOUT_AL EHCA_BMASK_IBM(34,34)
+#define MQPCB_TIMEOUT_AL EHCA_BMASK_IBM(27,31)
+#define MQPCB_MASK_MAX_STATIC_RATE_AL EHCA_BMASK_IBM(35,35)
+#define MQPCB_MAX_STATIC_RATE_AL EHCA_BMASK_IBM(24,31)
+#define MQPCB_MASK_DLID_AL EHCA_BMASK_IBM(36,36)
+#define MQPCB_DLID_AL EHCA_BMASK_IBM(16,31)
+#define MQPCB_MASK_RNR_RETRY_COUNT_AL EHCA_BMASK_IBM(37,37)
+#define MQPCB_RNR_RETRY_COUNT_AL EHCA_BMASK_IBM(29,31)
+#define MQPCB_MASK_SOURCE_PATH_BITS_AL EHCA_BMASK_IBM(38,38)
+#define MQPCB_SOURCE_PATH_BITS_AL EHCA_BMASK_IBM(25,31)
+#define MQPCB_MASK_TRAFFIC_CLASS_AL EHCA_BMASK_IBM(39,39)
+#define MQPCB_TRAFFIC_CLASS_AL EHCA_BMASK_IBM(24,31)
+#define MQPCB_MASK_HOP_LIMIT_AL EHCA_BMASK_IBM(40,40)
+#define MQPCB_HOP_LIMIT_AL EHCA_BMASK_IBM(24,31)
+#define MQPCB_MASK_SOURCE_GID_IDX_AL EHCA_BMASK_IBM(41,41)
+#define MQPCB_SOURCE_GID_IDX_AL EHCA_BMASK_IBM(24,31)
+#define MQPCB_MASK_FLOW_LABEL_AL EHCA_BMASK_IBM(42,42)
+#define MQPCB_FLOW_LABEL_AL EHCA_BMASK_IBM(12,31)
+#define MQPCB_MASK_DEST_GID_AL EHCA_BMASK_IBM(44,44)
+#define MQPCB_MASK_MAX_NR_OUTST_SEND_WR EHCA_BMASK_IBM(45,45)
+#define MQPCB_MAX_NR_OUTST_SEND_WR EHCA_BMASK_IBM(16,31)
+#define MQPCB_MASK_MAX_NR_OUTST_RECV_WR EHCA_BMASK_IBM(46,46)
+#define MQPCB_MAX_NR_OUTST_RECV_WR EHCA_BMASK_IBM(16,31)
+#define MQPCB_MASK_DISABLE_ETE_CREDIT_CHECK EHCA_BMASK_IBM(47,47)
+#define MQPCB_DISABLE_ETE_CREDIT_CHECK EHCA_BMASK_IBM(31,31)
+#define MQPCB_QP_NUMBER EHCA_BMASK_IBM(8,31)
+#define MQPCB_MASK_QP_ENABLE EHCA_BMASK_IBM(48,48)
+#define MQPCB_QP_ENABLE EHCA_BMASK_IBM(31,31)
+#define MQPCB_MASK_CURR_SQR_LIMIT EHCA_BMASK_IBM(49,49)
+#define MQPCB_CURR_SQR_LIMIT EHCA_BMASK_IBM(15,31)
+#define MQPCB_MASK_QP_AFF_ASYN_EV_LOG_REG EHCA_BMASK_IBM(50,50)
+#define MQPCB_MASK_SHARED_RQ_HNDL EHCA_BMASK_IBM(51,51)
+
+#endif /* __EHCA_CLASSES_PSERIES_H__ */
diff --git a/drivers/infiniband/hw/ehca/ehca_cq.c b/drivers/infiniband/hw/ehca/ehca_cq.c
new file mode 100644
index 0000000..458fe19
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_cq.c
@@ -0,0 +1,427 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * Completion queue handling
+ *
+ * Authors: Waleri Fomin <fomin@de.ibm.com>
+ * Khadija Souissi <souissi@de.ibm.com>
+ * Reinhard Ernst <rernst@de.ibm.com>
+ * Heiko J Schick <schickhj@de.ibm.com>
+ * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ *
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <asm/current.h>
+
+#include "ehca_iverbs.h"
+#include "ehca_classes.h"
+#include "ehca_irq.h"
+#include "hcp_if.h"
+
+static struct kmem_cache *cq_cache;
+
+int ehca_cq_assign_qp(struct ehca_cq *cq, struct ehca_qp *qp)
+{
+ unsigned int qp_num = qp->real_qp_num;
+ unsigned int key = qp_num & (QP_HASHTAB_LEN-1);
+ unsigned long spl_flags;
+
+ spin_lock_irqsave(&cq->spinlock, spl_flags);
+ hlist_add_head(&qp->list_entries, &cq->qp_hashtab[key]);
+ spin_unlock_irqrestore(&cq->spinlock, spl_flags);
+
+ ehca_dbg(cq->ib_cq.device, "cq_num=%x real_qp_num=%x",
+ cq->cq_number, qp_num);
+
+ return 0;
+}
+
+int ehca_cq_unassign_qp(struct ehca_cq *cq, unsigned int real_qp_num)
+{
+ int ret = -EINVAL;
+ unsigned int key = real_qp_num & (QP_HASHTAB_LEN-1);
+ struct hlist_node *iter;
+ struct ehca_qp *qp;
+ unsigned long spl_flags;
+
+ spin_lock_irqsave(&cq->spinlock, spl_flags);
+ hlist_for_each(iter, &cq->qp_hashtab[key]) {
+ qp = hlist_entry(iter, struct ehca_qp, list_entries);
+ if (qp->real_qp_num == real_qp_num) {
+ hlist_del(iter);
+ ehca_dbg(cq->ib_cq.device,
+ "removed qp from cq .cq_num=%x real_qp_num=%x",
+ cq->cq_number, real_qp_num);
+ ret = 0;
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&cq->spinlock, spl_flags);
+ if (ret)
+ ehca_err(cq->ib_cq.device,
+ "qp not found cq_num=%x real_qp_num=%x",
+ cq->cq_number, real_qp_num);
+
+ return ret;
+}
+
+struct ehca_qp* ehca_cq_get_qp(struct ehca_cq *cq, int real_qp_num)
+{
+ struct ehca_qp *ret = NULL;
+ unsigned int key = real_qp_num & (QP_HASHTAB_LEN-1);
+ struct hlist_node *iter;
+ struct ehca_qp *qp;
+ hlist_for_each(iter, &cq->qp_hashtab[key]) {
+ qp = hlist_entry(iter, struct ehca_qp, list_entries);
+ if (qp->real_qp_num == real_qp_num) {
+ ret = qp;
+ break;
+ }
+ }
+ return ret;
+}
+
+struct ib_cq *ehca_create_cq(struct ib_device *device, int cqe,
+ struct ib_ucontext *context,
+ struct ib_udata *udata)
+{
+ static const u32 additional_cqe = 20;
+ struct ib_cq *cq;
+ struct ehca_cq *my_cq;
+ struct ehca_shca *shca =
+ container_of(device, struct ehca_shca, ib_device);
+ struct ipz_adapter_handle adapter_handle;
+ struct ehca_alloc_cq_parms param; /* h_call's out parameters */
+ struct h_galpa gal;
+ void *vpage;
+ u32 counter;
+ u64 rpage, cqx_fec, h_ret;
+ int ipz_rc, ret, i;
+ unsigned long flags;
+
+ if (cqe >= 0xFFFFFFFF - 64 - additional_cqe)
+ return ERR_PTR(-EINVAL);
+
+ my_cq = kmem_cache_alloc(cq_cache, SLAB_KERNEL);
+ if (!my_cq) {
+ ehca_err(device, "Out of memory for ehca_cq struct device=%p",
+ device);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ memset(my_cq, 0, sizeof(struct ehca_cq));
+ memset(¶m, 0, sizeof(struct ehca_alloc_cq_parms));
+
+ spin_lock_init(&my_cq->spinlock);
+ spin_lock_init(&my_cq->cb_lock);
+ spin_lock_init(&my_cq->task_lock);
+ my_cq->ownpid = current->tgid;
+
+ cq = &my_cq->ib_cq;
+
+ adapter_handle = shca->ipz_hca_handle;
+ param.eq_handle = shca->eq.ipz_eq_handle;
+
+ do {
+ if (!idr_pre_get(&ehca_cq_idr, GFP_KERNEL)) {
+ cq = ERR_PTR(-ENOMEM);
+ ehca_err(device, "Can't reserve idr nr. device=%p",
+ device);
+ goto create_cq_exit1;
+ }
+
+ spin_lock_irqsave(&ehca_cq_idr_lock, flags);
+ ret = idr_get_new(&ehca_cq_idr, my_cq, &my_cq->token);
+ spin_unlock_irqrestore(&ehca_cq_idr_lock, flags);
+
+ } while (ret == -EAGAIN);
+
+ if (ret) {
+ cq = ERR_PTR(-ENOMEM);
+ ehca_err(device, "Can't allocate new idr entry. device=%p",
+ device);
+ goto create_cq_exit1;
+ }
+
+ /*
+ * CQs maximum depth is 4GB-64, but we need additional 20 as buffer
+ * for receiving errors CQEs.
+ */
+ param.nr_cqe = cqe + additional_cqe;
+ h_ret = hipz_h_alloc_resource_cq(adapter_handle, my_cq, ¶m);
+
+ if (h_ret != H_SUCCESS) {
+ ehca_err(device, "hipz_h_alloc_resource_cq() failed "
+ "h_ret=%lx device=%p", h_ret, device);
+ cq = ERR_PTR(ehca2ib_return_code(h_ret));
+ goto create_cq_exit2;
+ }
+
+ ipz_rc = ipz_queue_ctor(&my_cq->ipz_queue, param.act_pages,
+ EHCA_PAGESIZE, sizeof(struct ehca_cqe), 0);
+ if (!ipz_rc) {
+ ehca_err(device, "ipz_queue_ctor() failed ipz_rc=%x device=%p",
+ ipz_rc, device);
+ cq = ERR_PTR(-EINVAL);
+ goto create_cq_exit3;
+ }
+
+ for (counter = 0; counter < param.act_pages; counter++) {
+ vpage = ipz_qpageit_get_inc(&my_cq->ipz_queue);
+ if (!vpage) {
+ ehca_err(device, "ipz_qpageit_get_inc() "
+ "returns NULL device=%p", device);
+ cq = ERR_PTR(-EAGAIN);
+ goto create_cq_exit4;
+ }
+ rpage = virt_to_abs(vpage);
+
+ h_ret = hipz_h_register_rpage_cq(adapter_handle,
+ my_cq->ipz_cq_handle,
+ &my_cq->pf,
+ 0,
+ 0,
+ rpage,
+ 1,
+ my_cq->galpas.
+ kernel);
+
+ if (h_ret < H_SUCCESS) {
+ ehca_err(device, "hipz_h_register_rpage_cq() failed "
+ "ehca_cq=%p cq_num=%x h_ret=%lx counter=%i "
+ "act_pages=%i", my_cq, my_cq->cq_number,
+ h_ret, counter, param.act_pages);
+ cq = ERR_PTR(-EINVAL);
+ goto create_cq_exit4;
+ }
+
+ if (counter == (param.act_pages - 1)) {
+ vpage = ipz_qpageit_get_inc(&my_cq->ipz_queue);
+ if ((h_ret != H_SUCCESS) || vpage) {
+ ehca_err(device, "Registration of pages not "
+ "complete ehca_cq=%p cq_num=%x "
+ "h_ret=%lx", my_cq, my_cq->cq_number,
+ h_ret);
+ cq = ERR_PTR(-EAGAIN);
+ goto create_cq_exit4;
+ }
+ } else {
+ if (h_ret != H_PAGE_REGISTERED) {
+ ehca_err(device, "Registration of page failed "
+ "ehca_cq=%p cq_num=%x h_ret=%lx"
+ "counter=%i act_pages=%i",
+ my_cq, my_cq->cq_number,
+ h_ret, counter, param.act_pages);
+ cq = ERR_PTR(-ENOMEM);
+ goto create_cq_exit4;
+ }
+ }
+ }
+
+ ipz_qeit_reset(&my_cq->ipz_queue);
+
+ gal = my_cq->galpas.kernel;
+ cqx_fec = hipz_galpa_load(gal, CQTEMM_OFFSET(cqx_fec));
+ ehca_dbg(device, "ehca_cq=%p cq_num=%x CQX_FEC=%lx",
+ my_cq, my_cq->cq_number, cqx_fec);
+
+ my_cq->ib_cq.cqe = my_cq->nr_of_entries =
+ param.act_nr_of_entries - additional_cqe;
+ my_cq->cq_number = (my_cq->ipz_cq_handle.handle) & 0xffff;
+
+ for (i = 0; i < QP_HASHTAB_LEN; i++)
+ INIT_HLIST_HEAD(&my_cq->qp_hashtab[i]);
+
+ if (context) {
+ struct ipz_queue *ipz_queue = &my_cq->ipz_queue;
+ struct ehca_create_cq_resp resp;
+ struct vm_area_struct *vma;
+ memset(&resp, 0, sizeof(resp));
+ resp.cq_number = my_cq->cq_number;
+ resp.token = my_cq->token;
+ resp.ipz_queue.qe_size = ipz_queue->qe_size;
+ resp.ipz_queue.act_nr_of_sg = ipz_queue->act_nr_of_sg;
+ resp.ipz_queue.queue_length = ipz_queue->queue_length;
+ resp.ipz_queue.pagesize = ipz_queue->pagesize;
+ resp.ipz_queue.toggle_state = ipz_queue->toggle_state;
+ ret = ehca_mmap_nopage(((u64)(my_cq->token) << 32) | 0x12000000,
+ ipz_queue->queue_length,
+ (void**)&resp.ipz_queue.queue,
+ &vma);
+ if (ret) {
+ ehca_err(device, "Could not mmap queue pages");
+ cq = ERR_PTR(ret);
+ goto create_cq_exit4;
+ }
+ my_cq->uspace_queue = resp.ipz_queue.queue;
+ resp.galpas = my_cq->galpas;
+ ret = ehca_mmap_register(my_cq->galpas.user.fw_handle,
+ (void**)&resp.galpas.kernel.fw_handle,
+ &vma);
+ if (ret) {
+ ehca_err(device, "Could not mmap fw_handle");
+ cq = ERR_PTR(ret);
+ goto create_cq_exit5;
+ }
+ my_cq->uspace_fwh = (u64)resp.galpas.kernel.fw_handle;
+ if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
+ ehca_err(device, "Copy to udata failed.");
+ goto create_cq_exit6;
+ }
+ }
+
+ return cq;
+
+create_cq_exit6:
+ ehca_munmap(my_cq->uspace_fwh, EHCA_PAGESIZE);
+
+create_cq_exit5:
+ ehca_munmap(my_cq->uspace_queue, my_cq->ipz_queue.queue_length);
+
+create_cq_exit4:
+ ipz_queue_dtor(&my_cq->ipz_queue);
+
+create_cq_exit3:
+ h_ret = hipz_h_destroy_cq(adapter_handle, my_cq, 1);
+ if (h_ret != H_SUCCESS)
+ ehca_err(device, "hipz_h_destroy_cq() failed ehca_cq=%p "
+ "cq_num=%x h_ret=%lx", my_cq, my_cq->cq_number, h_ret);
+
+create_cq_exit2:
+ spin_lock_irqsave(&ehca_cq_idr_lock, flags);
+ idr_remove(&ehca_cq_idr, my_cq->token);
+ spin_unlock_irqrestore(&ehca_cq_idr_lock, flags);
+
+create_cq_exit1:
+ kmem_cache_free(cq_cache, my_cq);
+
+ return cq;
+}
+
+int ehca_destroy_cq(struct ib_cq *cq)
+{
+ u64 h_ret;
+ int ret;
+ struct ehca_cq *my_cq = container_of(cq, struct ehca_cq, ib_cq);
+ int cq_num = my_cq->cq_number;
+ struct ib_device *device = cq->device;
+ struct ehca_shca *shca = container_of(device, struct ehca_shca,
+ ib_device);
+ struct ipz_adapter_handle adapter_handle = shca->ipz_hca_handle;
+ u32 cur_pid = current->tgid;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ehca_cq_idr_lock, flags);
+ while (my_cq->nr_callbacks)
+ yield();
+
+ idr_remove(&ehca_cq_idr, my_cq->token);
+ spin_unlock_irqrestore(&ehca_cq_idr_lock, flags);
+
+ if (my_cq->uspace_queue && my_cq->ownpid != cur_pid) {
+ ehca_err(device, "Invalid caller pid=%x ownpid=%x",
+ cur_pid, my_cq->ownpid);
+ return -EINVAL;
+ }
+
+ /* un-mmap if vma alloc */
+ if (my_cq->uspace_queue ) {
+ ret = ehca_munmap(my_cq->uspace_queue,
+ my_cq->ipz_queue.queue_length);
+ if (ret)
+ ehca_err(device, "Could not munmap queue ehca_cq=%p "
+ "cq_num=%x", my_cq, cq_num);
+ ret = ehca_munmap(my_cq->uspace_fwh, EHCA_PAGESIZE);
+ if (ret)
+ ehca_err(device, "Could not munmap fwh ehca_cq=%p "
+ "cq_num=%x", my_cq, cq_num);
+ }
+
+ h_ret = hipz_h_destroy_cq(adapter_handle, my_cq, 0);
+ if (h_ret == H_R_STATE) {
+ /* cq in err: read err data and destroy it forcibly */
+ ehca_dbg(device, "ehca_cq=%p cq_num=%x ressource=%lx in err "
+ "state. Try to delete it forcibly.",
+ my_cq, cq_num, my_cq->ipz_cq_handle.handle);
+ ehca_error_data(shca, my_cq, my_cq->ipz_cq_handle.handle);
+ h_ret = hipz_h_destroy_cq(adapter_handle, my_cq, 1);
+ if (h_ret == H_SUCCESS)
+ ehca_dbg(device, "cq_num=%x deleted successfully.",
+ cq_num);
+ }
+ if (h_ret != H_SUCCESS) {
+ ehca_err(device, "hipz_h_destroy_cq() failed h_ret=%lx "
+ "ehca_cq=%p cq_num=%x", h_ret, my_cq, cq_num);
+ return ehca2ib_return_code(h_ret);
+ }
+ ipz_queue_dtor(&my_cq->ipz_queue);
+ kmem_cache_free(cq_cache, my_cq);
+
+ return 0;
+}
+
+int ehca_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
+{
+ struct ehca_cq *my_cq = container_of(cq, struct ehca_cq, ib_cq);
+ u32 cur_pid = current->tgid;
+
+ if (my_cq->uspace_queue && my_cq->ownpid != cur_pid) {
+ ehca_err(cq->device, "Invalid caller pid=%x ownpid=%x",
+ cur_pid, my_cq->ownpid);
+ return -EINVAL;
+ }
+
+ /* TODO: proper resize needs to be done */
+ ehca_err(cq->device, "not implemented yet");
+
+ return -EFAULT;
+}
+
+int ehca_init_cq_cache(void)
+{
+ cq_cache = kmem_cache_create("ehca_cache_cq",
+ sizeof(struct ehca_cq), 0,
+ SLAB_HWCACHE_ALIGN,
+ NULL, NULL);
+ if (!cq_cache)
+ return -ENOMEM;
+ return 0;
+}
+
+void ehca_cleanup_cq_cache(void)
+{
+ if (cq_cache)
+ kmem_cache_destroy(cq_cache);
+}
diff --git a/drivers/infiniband/hw/ehca/ehca_eq.c b/drivers/infiniband/hw/ehca/ehca_eq.c
new file mode 100644
index 0000000..5281dec
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_eq.c
@@ -0,0 +1,185 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * Event queue handling
+ *
+ * Authors: Waleri Fomin <fomin@de.ibm.com>
+ * Khadija Souissi <souissi@de.ibm.com>
+ * Reinhard Ernst <rernst@de.ibm.com>
+ * Heiko J Schick <schickhj@de.ibm.com>
+ * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ *
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "ehca_classes.h"
+#include "ehca_irq.h"
+#include "ehca_iverbs.h"
+#include "ehca_qes.h"
+#include "hcp_if.h"
+#include "ipz_pt_fn.h"
+
+int ehca_create_eq(struct ehca_shca *shca,
+ struct ehca_eq *eq,
+ const enum ehca_eq_type type, const u32 length)
+{
+ u64 ret;
+ u32 nr_pages;
+ u32 i;
+ void *vpage;
+ struct ib_device *ib_dev = &shca->ib_device;
+
+ spin_lock_init(&eq->spinlock);
+ eq->is_initialized = 0;
+
+ if (type != EHCA_EQ && type != EHCA_NEQ) {
+ ehca_err(ib_dev, "Invalid EQ type %x. eq=%p", type, eq);
+ return -EINVAL;
+ }
+ if (!length) {
+ ehca_err(ib_dev, "EQ length must not be zero. eq=%p", eq);
+ return -EINVAL;
+ }
+
+ ret = hipz_h_alloc_resource_eq(shca->ipz_hca_handle,
+ &eq->pf,
+ type,
+ length,
+ &eq->ipz_eq_handle,
+ &eq->length,
+ &nr_pages, &eq->ist);
+
+ if (ret != H_SUCCESS) {
+ ehca_err(ib_dev, "Can't allocate EQ/NEQ. eq=%p", eq);
+ return -EINVAL;
+ }
+
+ ret = ipz_queue_ctor(&eq->ipz_queue, nr_pages,
+ EHCA_PAGESIZE, sizeof(struct ehca_eqe), 0);
+ if (!ret) {
+ ehca_err(ib_dev, "Can't allocate EQ pages eq=%p", eq);
+ goto create_eq_exit1;
+ }
+
+ for (i = 0; i < nr_pages; i++) {
+ u64 rpage;
+
+ if (!(vpage = ipz_qpageit_get_inc(&eq->ipz_queue))) {
+ ret = H_RESOURCE;
+ goto create_eq_exit2;
+ }
+
+ rpage = virt_to_abs(vpage);
+ ret = hipz_h_register_rpage_eq(shca->ipz_hca_handle,
+ eq->ipz_eq_handle,
+ &eq->pf,
+ 0, 0, rpage, 1);
+
+ if (i == (nr_pages - 1)) {
+ /* last page */
+ vpage = ipz_qpageit_get_inc(&eq->ipz_queue);
+ if (ret != H_SUCCESS || vpage)
+ goto create_eq_exit2;
+ } else {
+ if (ret != H_PAGE_REGISTERED || !vpage)
+ goto create_eq_exit2;
+ }
+ }
+
+ ipz_qeit_reset(&eq->ipz_queue);
+
+ /* register interrupt handlers and initialize work queues */
+ if (type == EHCA_EQ) {
+ ret = ibmebus_request_irq(NULL, eq->ist, ehca_interrupt_eq,
+ SA_INTERRUPT, "ehca_eq",
+ (void *)shca);
+ if (ret < 0)
+ ehca_err(ib_dev, "Can't map interrupt handler.");
+
+ tasklet_init(&eq->interrupt_task, ehca_tasklet_eq, (long)shca);
+ } else if (type == EHCA_NEQ) {
+ ret = ibmebus_request_irq(NULL, eq->ist, ehca_interrupt_neq,
+ SA_INTERRUPT, "ehca_neq",
+ (void *)shca);
+ if (ret < 0)
+ ehca_err(ib_dev, "Can't map interrupt handler.");
+
+ tasklet_init(&eq->interrupt_task, ehca_tasklet_neq, (long)shca);
+ }
+
+ eq->is_initialized = 1;
+
+ return 0;
+
+create_eq_exit2:
+ ipz_queue_dtor(&eq->ipz_queue);
+
+create_eq_exit1:
+ hipz_h_destroy_eq(shca->ipz_hca_handle, eq);
+
+ return -EINVAL;
+}
+
+void *ehca_poll_eq(struct ehca_shca *shca, struct ehca_eq *eq)
+{
+ unsigned long flags;
+ void *eqe;
+
+ spin_lock_irqsave(&eq->spinlock, flags);
+ eqe = ipz_eqit_eq_get_inc_valid(&eq->ipz_queue);
+ spin_unlock_irqrestore(&eq->spinlock, flags);
+
+ return eqe;
+}
+
+int ehca_destroy_eq(struct ehca_shca *shca, struct ehca_eq *eq)
+{
+ unsigned long flags;
+ u64 h_ret;
+
+ spin_lock_irqsave(&eq->spinlock, flags);
+ ibmebus_free_irq(NULL, eq->ist, (void *)shca);
+
+ h_ret = hipz_h_destroy_eq(shca->ipz_hca_handle, eq);
+
+ spin_unlock_irqrestore(&eq->spinlock, flags);
+
+ if (h_ret != H_SUCCESS) {
+ ehca_err(&shca->ib_device, "Can't free EQ resources.");
+ return -EINVAL;
+ }
+ ipz_queue_dtor(&eq->ipz_queue);
+
+ return 0;
+}
diff --git a/drivers/infiniband/hw/ehca/ehca_hca.c b/drivers/infiniband/hw/ehca/ehca_hca.c
new file mode 100644
index 0000000..5eae6ac
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_hca.c
@@ -0,0 +1,241 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * HCA query functions
+ *
+ * Authors: Heiko J Schick <schickhj@de.ibm.com>
+ * Christoph Raisch <raisch@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "ehca_tools.h"
+#include "hcp_if.h"
+
+int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
+{
+ int ret = 0;
+ struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
+ ib_device);
+ struct hipz_query_hca *rblock;
+
+ rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+ if (!rblock) {
+ ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
+ return -ENOMEM;
+ }
+
+ if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
+ ehca_err(&shca->ib_device, "Can't query device properties");
+ ret = -EINVAL;
+ goto query_device1;
+ }
+
+ memset(props, 0, sizeof(struct ib_device_attr));
+ props->fw_ver = rblock->hw_ver;
+ props->max_mr_size = rblock->max_mr_size;
+ props->vendor_id = rblock->vendor_id >> 8;
+ props->vendor_part_id = rblock->vendor_part_id >> 16;
+ props->hw_ver = rblock->hw_ver;
+ props->max_qp = min_t(int, rblock->max_qp, INT_MAX);
+ props->max_qp_wr = min_t(int, rblock->max_wqes_wq, INT_MAX);
+ props->max_sge = min_t(int, rblock->max_sge, INT_MAX);
+ props->max_sge_rd = min_t(int, rblock->max_sge_rd, INT_MAX);
+ props->max_cq = min_t(int, rblock->max_cq, INT_MAX);
+ props->max_cqe = min_t(int, rblock->max_cqe, INT_MAX);
+ props->max_mr = min_t(int, rblock->max_mr, INT_MAX);
+ props->max_mw = min_t(int, rblock->max_mw, INT_MAX);
+ props->max_pd = min_t(int, rblock->max_pd, INT_MAX);
+ props->max_ah = min_t(int, rblock->max_ah, INT_MAX);
+ props->max_fmr = min_t(int, rblock->max_mr, INT_MAX);
+ props->max_srq = 0;
+ props->max_srq_wr = 0;
+ props->max_srq_sge = 0;
+ props->max_pkeys = 16;
+ props->local_ca_ack_delay
+ = rblock->local_ca_ack_delay;
+ props->max_raw_ipv6_qp
+ = min_t(int, rblock->max_raw_ipv6_qp, INT_MAX);
+ props->max_raw_ethy_qp
+ = min_t(int, rblock->max_raw_ethy_qp, INT_MAX);
+ props->max_mcast_grp
+ = min_t(int, rblock->max_mcast_grp, INT_MAX);
+ props->max_mcast_qp_attach
+ = min_t(int, rblock->max_mcast_qp_attach, INT_MAX);
+ props->max_total_mcast_qp_attach
+ = min_t(int, rblock->max_total_mcast_qp_attach, INT_MAX);
+
+query_device1:
+ kfree(rblock);
+
+ return ret;
+}
+
+int ehca_query_port(struct ib_device *ibdev,
+ u8 port, struct ib_port_attr *props)
+{
+ int ret = 0;
+ struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
+ ib_device);
+ struct hipz_query_port *rblock;
+
+ rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+ if (!rblock) {
+ ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
+ return -ENOMEM;
+ }
+
+ if (hipz_h_query_port(shca->ipz_hca_handle, port, rblock) != H_SUCCESS) {
+ ehca_err(&shca->ib_device, "Can't query port properties");
+ ret = -EINVAL;
+ goto query_port1;
+ }
+
+ memset(props, 0, sizeof(struct ib_port_attr));
+ props->state = rblock->state;
+
+ switch (rblock->max_mtu) {
+ case 0x1:
+ props->active_mtu = props->max_mtu = IB_MTU_256;
+ break;
+ case 0x2:
+ props->active_mtu = props->max_mtu = IB_MTU_512;
+ break;
+ case 0x3:
+ props->active_mtu = props->max_mtu = IB_MTU_1024;
+ break;
+ case 0x4:
+ props->active_mtu = props->max_mtu = IB_MTU_2048;
+ break;
+ case 0x5:
+ props->active_mtu = props->max_mtu = IB_MTU_4096;
+ break;
+ default:
+ ehca_err(&shca->ib_device, "Unknown MTU size: %x.",
+ rblock->max_mtu);
+ break;
+ }
+
+ props->gid_tbl_len = rblock->gid_tbl_len;
+ props->max_msg_sz = rblock->max_msg_sz;
+ props->bad_pkey_cntr = rblock->bad_pkey_cntr;
+ props->qkey_viol_cntr = rblock->qkey_viol_cntr;
+ props->pkey_tbl_len = rblock->pkey_tbl_len;
+ props->lid = rblock->lid;
+ props->sm_lid = rblock->sm_lid;
+ props->lmc = rblock->lmc;
+ props->sm_sl = rblock->sm_sl;
+ props->subnet_timeout = rblock->subnet_timeout;
+ props->init_type_reply = rblock->init_type_reply;
+
+ props->active_width = IB_WIDTH_12X;
+ props->active_speed = 0x1;
+
+query_port1:
+ kfree(rblock);
+
+ return ret;
+}
+
+int ehca_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
+{
+ int ret = 0;
+ struct ehca_shca *shca = container_of(ibdev, struct ehca_shca, ib_device);
+ struct hipz_query_port *rblock;
+
+ if (index > 16) {
+ ehca_err(&shca->ib_device, "Invalid index: %x.", index);
+ return -EINVAL;
+ }
+
+ rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+ if (!rblock) {
+ ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
+ return -ENOMEM;
+ }
+
+ if (hipz_h_query_port(shca->ipz_hca_handle, port, rblock) != H_SUCCESS) {
+ ehca_err(&shca->ib_device, "Can't query port properties");
+ ret = -EINVAL;
+ goto query_pkey1;
+ }
+
+ memcpy(pkey, &rblock->pkey_entries + index, sizeof(u16));
+
+query_pkey1:
+ kfree(rblock);
+
+ return ret;
+}
+
+int ehca_query_gid(struct ib_device *ibdev, u8 port,
+ int index, union ib_gid *gid)
+{
+ int ret = 0;
+ struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
+ ib_device);
+ struct hipz_query_port *rblock;
+
+ if (index > 255) {
+ ehca_err(&shca->ib_device, "Invalid index: %x.", index);
+ return -EINVAL;
+ }
+
+ rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+ if (!rblock) {
+ ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
+ return -ENOMEM;
+ }
+
+ if (hipz_h_query_port(shca->ipz_hca_handle, port, rblock) != H_SUCCESS) {
+ ehca_err(&shca->ib_device, "Can't query port properties");
+ ret = -EINVAL;
+ goto query_gid1;
+ }
+
+ memcpy(&gid->raw[0], &rblock->gid_prefix, sizeof(u64));
+ memcpy(&gid->raw[8], &rblock->guid_entries[index], sizeof(u64));
+
+query_gid1:
+ kfree(rblock);
+
+ return ret;
+}
+
+int ehca_modify_port(struct ib_device *ibdev,
+ u8 port, int port_modify_mask,
+ struct ib_port_modify *props)
+{
+ /* Not implemented yet */
+ return -EFAULT;
+}
diff --git a/drivers/infiniband/hw/ehca/ehca_irq.c b/drivers/infiniband/hw/ehca/ehca_irq.c
new file mode 100644
index 0000000..2a65b5b
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_irq.c
@@ -0,0 +1,762 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * Functions for EQs, NEQs and interrupts
+ *
+ * Authors: Heiko J Schick <schickhj@de.ibm.com>
+ * Khadija Souissi <souissi@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "ehca_classes.h"
+#include "ehca_irq.h"
+#include "ehca_iverbs.h"
+#include "ehca_tools.h"
+#include "hcp_if.h"
+#include "hipz_fns.h"
+
+#define EQE_COMPLETION_EVENT EHCA_BMASK_IBM(1,1)
+#define EQE_CQ_QP_NUMBER EHCA_BMASK_IBM(8,31)
+#define EQE_EE_IDENTIFIER EHCA_BMASK_IBM(2,7)
+#define EQE_CQ_NUMBER EHCA_BMASK_IBM(8,31)
+#define EQE_QP_NUMBER EHCA_BMASK_IBM(8,31)
+#define EQE_QP_TOKEN EHCA_BMASK_IBM(32,63)
+#define EQE_CQ_TOKEN EHCA_BMASK_IBM(32,63)
+
+#define NEQE_COMPLETION_EVENT EHCA_BMASK_IBM(1,1)
+#define NEQE_EVENT_CODE EHCA_BMASK_IBM(2,7)
+#define NEQE_PORT_NUMBER EHCA_BMASK_IBM(8,15)
+#define NEQE_PORT_AVAILABILITY EHCA_BMASK_IBM(16,16)
+
+#define ERROR_DATA_LENGTH EHCA_BMASK_IBM(52,63)
+#define ERROR_DATA_TYPE EHCA_BMASK_IBM(0,7)
+
+#ifdef CONFIG_INFINIBAND_EHCA_SCALING
+
+static void queue_comp_task(struct ehca_cq *__cq);
+
+static struct ehca_comp_pool* pool;
+static struct notifier_block comp_pool_callback_nb;
+
+#endif
+
+static inline void comp_event_callback(struct ehca_cq *cq)
+{
+ if (!cq->ib_cq.comp_handler)
+ return;
+
+ spin_lock(&cq->cb_lock);
+ cq->ib_cq.comp_handler(&cq->ib_cq, cq->ib_cq.cq_context);
+ spin_unlock(&cq->cb_lock);
+
+ return;
+}
+
+static void print_error_data(struct ehca_shca * shca, void* data,
+ u64* rblock, int length)
+{
+ u64 type = EHCA_BMASK_GET(ERROR_DATA_TYPE, rblock[2]);
+ u64 resource = rblock[1];
+
+ switch (type) {
+ case 0x1: /* Queue Pair */
+ {
+ struct ehca_qp *qp = (struct ehca_qp*)data;
+
+ /* only print error data if AER is set */
+ if (rblock[6] == 0)
+ return;
+
+ ehca_err(&shca->ib_device,
+ "QP 0x%x (resource=%lx) has errors.",
+ qp->ib_qp.qp_num, resource);
+ break;
+ }
+ case 0x4: /* Completion Queue */
+ {
+ struct ehca_cq *cq = (struct ehca_cq*)data;
+
+ ehca_err(&shca->ib_device,
+ "CQ 0x%x (resource=%lx) has errors.",
+ cq->cq_number, resource);
+ break;
+ }
+ default:
+ ehca_err(&shca->ib_device,
+ "Unknown errror type: %lx on %s.",
+ type, shca->ib_device.name);
+ break;
+ }
+
+ ehca_err(&shca->ib_device, "Error data is available: %lx.", resource);
+ ehca_err(&shca->ib_device, "EHCA ----- error data begin "
+ "---------------------------------------------------");
+ ehca_dmp(rblock, length, "resource=%lx", resource);
+ ehca_err(&shca->ib_device, "EHCA ----- error data end "
+ "----------------------------------------------------");
+
+ return;
+}
+
+int ehca_error_data(struct ehca_shca *shca, void *data,
+ u64 resource)
+{
+
+ unsigned long ret;
+ u64 *rblock;
+ unsigned long block_count;
+
+ rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+ if (!rblock) {
+ ehca_err(&shca->ib_device, "Cannot allocate rblock memory.");
+ ret = -ENOMEM;
+ goto error_data1;
+ }
+
+ ret = hipz_h_error_data(shca->ipz_hca_handle,
+ resource,
+ rblock,
+ &block_count);
+
+ if (ret == H_R_STATE) {
+ ehca_err(&shca->ib_device,
+ "No error data is available: %lx.", resource);
+ }
+ else if (ret == H_SUCCESS) {
+ int length;
+
+ length = EHCA_BMASK_GET(ERROR_DATA_LENGTH, rblock[0]);
+
+ if (length > PAGE_SIZE)
+ length = PAGE_SIZE;
+
+ print_error_data(shca, data, rblock, length);
+ }
+ else {
+ ehca_err(&shca->ib_device,
+ "Error data could not be fetched: %lx", resource);
+ }
+
+ kfree(rblock);
+
+error_data1:
+ return ret;
+
+}
+
+static void qp_event_callback(struct ehca_shca *shca,
+ u64 eqe,
+ enum ib_event_type event_type)
+{
+ struct ib_event event;
+ struct ehca_qp *qp;
+ unsigned long flags;
+ u32 token = EHCA_BMASK_GET(EQE_QP_TOKEN, eqe);
+
+ spin_lock_irqsave(&ehca_qp_idr_lock, flags);
+ qp = idr_find(&ehca_qp_idr, token);
+ spin_unlock_irqrestore(&ehca_qp_idr_lock, flags);
+
+
+ if (!qp)
+ return;
+
+ ehca_error_data(shca, qp, qp->ipz_qp_handle.handle);
+
+ if (!qp->ib_qp.event_handler)
+ return;
+
+ event.device = &shca->ib_device;
+ event.event = event_type;
+ event.element.qp = &qp->ib_qp;
+
+ qp->ib_qp.event_handler(&event, qp->ib_qp.qp_context);
+
+ return;
+}
+
+static void cq_event_callback(struct ehca_shca *shca,
+ u64 eqe)
+{
+ struct ehca_cq *cq;
+ unsigned long flags;
+ u32 token = EHCA_BMASK_GET(EQE_CQ_TOKEN, eqe);
+
+ spin_lock_irqsave(&ehca_cq_idr_lock, flags);
+ cq = idr_find(&ehca_cq_idr, token);
+ spin_unlock_irqrestore(&ehca_cq_idr_lock, flags);
+
+ if (!cq)
+ return;
+
+ ehca_error_data(shca, cq, cq->ipz_cq_handle.handle);
+
+ return;
+}
+
+static void parse_identifier(struct ehca_shca *shca, u64 eqe)
+{
+ u8 identifier = EHCA_BMASK_GET(EQE_EE_IDENTIFIER, eqe);
+
+ switch (identifier) {
+ case 0x02: /* path migrated */
+ qp_event_callback(shca, eqe, IB_EVENT_PATH_MIG);
+ break;
+ case 0x03: /* communication established */
+ qp_event_callback(shca, eqe, IB_EVENT_COMM_EST);
+ break;
+ case 0x04: /* send queue drained */
+ qp_event_callback(shca, eqe, IB_EVENT_SQ_DRAINED);
+ break;
+ case 0x05: /* QP error */
+ case 0x06: /* QP error */
+ qp_event_callback(shca, eqe, IB_EVENT_QP_FATAL);
+ break;
+ case 0x07: /* CQ error */
+ case 0x08: /* CQ error */
+ cq_event_callback(shca, eqe);
+ break;
+ case 0x09: /* MRMWPTE error */
+ ehca_err(&shca->ib_device, "MRMWPTE error.");
+ break;
+ case 0x0A: /* port event */
+ ehca_err(&shca->ib_device, "Port event.");
+ break;
+ case 0x0B: /* MR access error */
+ ehca_err(&shca->ib_device, "MR access error.");
+ break;
+ case 0x0C: /* EQ error */
+ ehca_err(&shca->ib_device, "EQ error.");
+ break;
+ case 0x0D: /* P/Q_Key mismatch */
+ ehca_err(&shca->ib_device, "P/Q_Key mismatch.");
+ break;
+ case 0x10: /* sampling complete */
+ ehca_err(&shca->ib_device, "Sampling complete.");
+ break;
+ case 0x11: /* unaffiliated access error */
+ ehca_err(&shca->ib_device, "Unaffiliated access error.");
+ break;
+ case 0x12: /* path migrating error */
+ ehca_err(&shca->ib_device, "Path migration error.");
+ break;
+ case 0x13: /* interface trace stopped */
+ ehca_err(&shca->ib_device, "Interface trace stopped.");
+ break;
+ case 0x14: /* first error capture info available */
+ default:
+ ehca_err(&shca->ib_device, "Unknown identifier: %x on %s.",
+ identifier, shca->ib_device.name);
+ break;
+ }
+
+ return;
+}
+
+static void parse_ec(struct ehca_shca *shca, u64 eqe)
+{
+ struct ib_event event;
+ u8 ec = EHCA_BMASK_GET(NEQE_EVENT_CODE, eqe);
+ u8 port = EHCA_BMASK_GET(NEQE_PORT_NUMBER, eqe);
+
+ switch (ec) {
+ case 0x30: /* port availability change */
+ if (EHCA_BMASK_GET(NEQE_PORT_AVAILABILITY, eqe)) {
+ ehca_info(&shca->ib_device,
+ "port %x is active.", port);
+ event.device = &shca->ib_device;
+ event.event = IB_EVENT_PORT_ACTIVE;
+ event.element.port_num = port;
+ shca->sport[port - 1].port_state = IB_PORT_ACTIVE;
+ ib_dispatch_event(&event);
+ } else {
+ ehca_info(&shca->ib_device,
+ "port %x is inactive.", port);
+ event.device = &shca->ib_device;
+ event.event = IB_EVENT_PORT_ERR;
+ event.element.port_num = port;
+ shca->sport[port - 1].port_state = IB_PORT_DOWN;
+ ib_dispatch_event(&event);
+ }
+ break;
+ case 0x31:
+ /* port configuration change
+ * disruptive change is caused by
+ * LID, PKEY or SM change
+ */
+ ehca_warn(&shca->ib_device,
+ "disruptive port %x configuration change", port);
+
+ ehca_info(&shca->ib_device,
+ "port %x is inactive.", port);
+ event.device = &shca->ib_device;
+ event.event = IB_EVENT_PORT_ERR;
+ event.element.port_num = port;
+ shca->sport[port - 1].port_state = IB_PORT_DOWN;
+ ib_dispatch_event(&event);
+
+ ehca_info(&shca->ib_device,
+ "port %x is active.", port);
+ event.device = &shca->ib_device;
+ event.event = IB_EVENT_PORT_ACTIVE;
+ event.element.port_num = port;
+ shca->sport[port - 1].port_state = IB_PORT_ACTIVE;
+ ib_dispatch_event(&event);
+ break;
+ case 0x32: /* adapter malfunction */
+ ehca_err(&shca->ib_device, "Adapter malfunction.");
+ break;
+ case 0x33: /* trace stopped */
+ ehca_err(&shca->ib_device, "Traced stopped.");
+ break;
+ default:
+ ehca_err(&shca->ib_device, "Unknown event code: %x on %s.",
+ ec, shca->ib_device.name);
+ break;
+ }
+
+ return;
+}
+
+static inline void reset_eq_pending(struct ehca_cq *cq)
+{
+ u64 CQx_EP;
+ struct h_galpa gal = cq->galpas.kernel;
+
+ hipz_galpa_store_cq(gal, cqx_ep, 0x0);
+ CQx_EP = hipz_galpa_load(gal, CQTEMM_OFFSET(cqx_ep));
+
+ return;
+}
+
+irqreturn_t ehca_interrupt_neq(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct ehca_shca *shca = (struct ehca_shca*)dev_id;
+
+ tasklet_hi_schedule(&shca->neq.interrupt_task);
+
+ return IRQ_HANDLED;
+}
+
+void ehca_tasklet_neq(unsigned long data)
+{
+ struct ehca_shca *shca = (struct ehca_shca*)data;
+ struct ehca_eqe *eqe;
+ u64 ret;
+
+ eqe = (struct ehca_eqe *)ehca_poll_eq(shca, &shca->neq);
+
+ while (eqe) {
+ if (!EHCA_BMASK_GET(NEQE_COMPLETION_EVENT, eqe->entry))
+ parse_ec(shca, eqe->entry);
+
+ eqe = (struct ehca_eqe *)ehca_poll_eq(shca, &shca->neq);
+ }
+
+ ret = hipz_h_reset_event(shca->ipz_hca_handle,
+ shca->neq.ipz_eq_handle, 0xFFFFFFFFFFFFFFFFL);
+
+ if (ret != H_SUCCESS)
+ ehca_err(&shca->ib_device, "Can't clear notification events.");
+
+ return;
+}
+
+irqreturn_t ehca_interrupt_eq(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct ehca_shca *shca = (struct ehca_shca*)dev_id;
+
+ tasklet_hi_schedule(&shca->eq.interrupt_task);
+
+ return IRQ_HANDLED;
+}
+
+void ehca_tasklet_eq(unsigned long data)
+{
+ struct ehca_shca *shca = (struct ehca_shca*)data;
+ struct ehca_eqe *eqe;
+ int int_state;
+ int query_cnt = 0;
+
+ do {
+ eqe = (struct ehca_eqe *)ehca_poll_eq(shca, &shca->eq);
+
+ if ((shca->hw_level >= 2) && eqe)
+ int_state = 1;
+ else
+ int_state = 0;
+
+ while ((int_state == 1) || eqe) {
+ while (eqe) {
+ u64 eqe_value = eqe->entry;
+
+ ehca_dbg(&shca->ib_device,
+ "eqe_value=%lx", eqe_value);
+
+ /* TODO: better structure */
+ if (EHCA_BMASK_GET(EQE_COMPLETION_EVENT,
+ eqe_value)) {
+ unsigned long flags;
+ u32 token;
+ struct ehca_cq *cq;
+
+ ehca_dbg(&shca->ib_device,
+ "... completion event");
+ token =
+ EHCA_BMASK_GET(EQE_CQ_TOKEN,
+ eqe_value);
+ spin_lock_irqsave(&ehca_cq_idr_lock,
+ flags);
+ cq = idr_find(&ehca_cq_idr, token);
+
+ if (cq == NULL) {
+ spin_unlock(&ehca_cq_idr_lock);
+ break;
+ }
+
+ reset_eq_pending(cq);
+#ifdef CONFIG_INFINIBAND_EHCA_SCALING
+ queue_comp_task(cq);
+ spin_unlock_irqrestore(&ehca_cq_idr_lock,
+ flags);
+#else
+ spin_unlock_irqrestore(&ehca_cq_idr_lock,
+ flags);
+ comp_event_callback(cq);
+#endif
+ } else {
+ ehca_dbg(&shca->ib_device,
+ "... non completion event");
+ parse_identifier(shca, eqe_value);
+ }
+ eqe =
+ (struct ehca_eqe *)ehca_poll_eq(shca,
+ &shca->eq);
+ }
+
+ if (shca->hw_level >= 2) {
+ int_state =
+ hipz_h_query_int_state(shca->ipz_hca_handle,
+ shca->eq.ist);
+ query_cnt++;
+ iosync();
+ if (query_cnt >= 100) {
+ query_cnt = 0;
+ int_state = 0;
+ }
+ }
+ eqe = (struct ehca_eqe *)ehca_poll_eq(shca, &shca->eq);
+
+ }
+ } while (int_state != 0);
+
+ return;
+}
+
+#ifdef CONFIG_INFINIBAND_EHCA_SCALING
+
+static inline int find_next_online_cpu(struct ehca_comp_pool* pool)
+{
+ unsigned long flags_last_cpu;
+
+ if (ehca_debug_level)
+ ehca_dmp(&cpu_online_map, sizeof(cpumask_t), "");
+
+ spin_lock_irqsave(&pool->last_cpu_lock, flags_last_cpu);
+ pool->last_cpu = next_cpu(pool->last_cpu, cpu_online_map);
+ if (pool->last_cpu == NR_CPUS)
+ pool->last_cpu = first_cpu(cpu_online_map);
+ spin_unlock_irqrestore(&pool->last_cpu_lock, flags_last_cpu);
+
+ return pool->last_cpu;
+}
+
+static void __queue_comp_task(struct ehca_cq *__cq,
+ struct ehca_cpu_comp_task *cct)
+{
+ unsigned long flags_cct;
+ unsigned long flags_cq;
+
+ spin_lock_irqsave(&cct->task_lock, flags_cct);
+ spin_lock_irqsave(&__cq->task_lock, flags_cq);
+
+ if (__cq->nr_callbacks == 0) {
+ __cq->nr_callbacks++;
+ list_add_tail(&__cq->entry, &cct->cq_list);
+ cct->cq_jobs++;
+ wake_up(&cct->wait_queue);
+ }
+ else
+ __cq->nr_callbacks++;
+
+ spin_unlock_irqrestore(&__cq->task_lock, flags_cq);
+ spin_unlock_irqrestore(&cct->task_lock, flags_cct);
+}
+
+static void queue_comp_task(struct ehca_cq *__cq)
+{
+ int cpu;
+ int cpu_id;
+ struct ehca_cpu_comp_task *cct;
+
+ cpu = get_cpu();
+ cpu_id = find_next_online_cpu(pool);
+
+ BUG_ON(!cpu_online(cpu_id));
+
+ cct = per_cpu_ptr(pool->cpu_comp_tasks, cpu_id);
+
+ if (cct->cq_jobs > 0) {
+ cpu_id = find_next_online_cpu(pool);
+ cct = per_cpu_ptr(pool->cpu_comp_tasks, cpu_id);
+ }
+
+ __queue_comp_task(__cq, cct);
+
+ put_cpu();
+
+ return;
+}
+
+static void run_comp_task(struct ehca_cpu_comp_task* cct)
+{
+ struct ehca_cq *cq;
+ unsigned long flags_cct;
+ unsigned long flags_cq;
+
+ spin_lock_irqsave(&cct->task_lock, flags_cct);
+
+ while (!list_empty(&cct->cq_list)) {
+ cq = list_entry(cct->cq_list.next, struct ehca_cq, entry);
+ spin_unlock_irqrestore(&cct->task_lock, flags_cct);
+ comp_event_callback(cq);
+ spin_lock_irqsave(&cct->task_lock, flags_cct);
+
+ spin_lock_irqsave(&cq->task_lock, flags_cq);
+ cq->nr_callbacks--;
+ if (cq->nr_callbacks == 0) {
+ list_del_init(cct->cq_list.next);
+ cct->cq_jobs--;
+ }
+ spin_unlock_irqrestore(&cq->task_lock, flags_cq);
+
+ }
+
+ spin_unlock_irqrestore(&cct->task_lock, flags_cct);
+
+ return;
+}
+
+static int comp_task(void *__cct)
+{
+ struct ehca_cpu_comp_task* cct = __cct;
+ DECLARE_WAITQUEUE(wait, current);
+
+ set_current_state(TASK_INTERRUPTIBLE);
+ while(!kthread_should_stop()) {
+ add_wait_queue(&cct->wait_queue, &wait);
+
+ if (list_empty(&cct->cq_list))
+ schedule();
+ else
+ __set_current_state(TASK_RUNNING);
+
+ remove_wait_queue(&cct->wait_queue, &wait);
+
+ if (!list_empty(&cct->cq_list))
+ run_comp_task(__cct);
+
+ set_current_state(TASK_INTERRUPTIBLE);
+ }
+ __set_current_state(TASK_RUNNING);
+
+ return 0;
+}
+
+static struct task_struct *create_comp_task(struct ehca_comp_pool *pool,
+ int cpu)
+{
+ struct ehca_cpu_comp_task *cct;
+
+ cct = per_cpu_ptr(pool->cpu_comp_tasks, cpu);
+ spin_lock_init(&cct->task_lock);
+ INIT_LIST_HEAD(&cct->cq_list);
+ init_waitqueue_head(&cct->wait_queue);
+ cct->task = kthread_create(comp_task, cct, "ehca_comp/%d", cpu);
+
+ return cct->task;
+}
+
+static void destroy_comp_task(struct ehca_comp_pool *pool,
+ int cpu)
+{
+ struct ehca_cpu_comp_task *cct;
+ struct task_struct *task;
+ unsigned long flags_cct;
+
+ cct = per_cpu_ptr(pool->cpu_comp_tasks, cpu);
+
+ spin_lock_irqsave(&cct->task_lock, flags_cct);
+
+ task = cct->task;
+ cct->task = NULL;
+ cct->cq_jobs = 0;
+
+ spin_unlock_irqrestore(&cct->task_lock, flags_cct);
+
+ if (task)
+ kthread_stop(task);
+
+ return;
+}
+
+static void take_over_work(struct ehca_comp_pool *pool,
+ int cpu)
+{
+ struct ehca_cpu_comp_task *cct = per_cpu_ptr(pool->cpu_comp_tasks, cpu);
+ LIST_HEAD(list);
+ struct ehca_cq *cq;
+ unsigned long flags_cct;
+
+ spin_lock_irqsave(&cct->task_lock, flags_cct);
+
+ list_splice_init(&cct->cq_list, &list);
+
+ while(!list_empty(&list)) {
+ cq = list_entry(cct->cq_list.next, struct ehca_cq, entry);
+
+ list_del(&cq->entry);
+ __queue_comp_task(cq, per_cpu_ptr(pool->cpu_comp_tasks,
+ smp_processor_id()));
+ }
+
+ spin_unlock_irqrestore(&cct->task_lock, flags_cct);
+
+}
+
+static int comp_pool_callback(struct notifier_block *nfb,
+ unsigned long action,
+ void *hcpu)
+{
+ unsigned int cpu = (unsigned long)hcpu;
+ struct ehca_cpu_comp_task *cct;
+
+ switch (action) {
+ case CPU_UP_PREPARE:
+ ehca_gen_dbg("CPU: %x (CPU_PREPARE)", cpu);
+ if(!create_comp_task(pool, cpu)) {
+ ehca_gen_err("Can't create comp_task for cpu: %x", cpu);
+ return NOTIFY_BAD;
+ }
+ break;
+ case CPU_UP_CANCELED:
+ ehca_gen_dbg("CPU: %x (CPU_CANCELED)", cpu);
+ cct = per_cpu_ptr(pool->cpu_comp_tasks, cpu);
+ kthread_bind(cct->task, any_online_cpu(cpu_online_map));
+ destroy_comp_task(pool, cpu);
+ break;
+ case CPU_ONLINE:
+ ehca_gen_dbg("CPU: %x (CPU_ONLINE)", cpu);
+ cct = per_cpu_ptr(pool->cpu_comp_tasks, cpu);
+ kthread_bind(cct->task, cpu);
+ wake_up_process(cct->task);
+ break;
+ case CPU_DOWN_PREPARE:
+ ehca_gen_dbg("CPU: %x (CPU_DOWN_PREPARE)", cpu);
+ break;
+ case CPU_DOWN_FAILED:
+ ehca_gen_dbg("CPU: %x (CPU_DOWN_FAILED)", cpu);
+ break;
+ case CPU_DEAD:
+ ehca_gen_dbg("CPU: %x (CPU_DEAD)", cpu);
+ destroy_comp_task(pool, cpu);
+ take_over_work(pool, cpu);
+ break;
+ }
+
+ return NOTIFY_OK;
+}
+
+#endif
+
+int ehca_create_comp_pool(void)
+{
+#ifdef CONFIG_INFINIBAND_EHCA_SCALING
+ int cpu;
+ struct task_struct *task;
+
+ pool = kzalloc(sizeof(struct ehca_comp_pool), GFP_KERNEL);
+ if (pool == NULL)
+ return -ENOMEM;
+
+ spin_lock_init(&pool->last_cpu_lock);
+ pool->last_cpu = any_online_cpu(cpu_online_map);
+
+ pool->cpu_comp_tasks = alloc_percpu(struct ehca_cpu_comp_task);
+ if (pool->cpu_comp_tasks == NULL) {
+ kfree(pool);
+ return -EINVAL;
+ }
+
+ for_each_online_cpu(cpu) {
+ task = create_comp_task(pool, cpu);
+ if (task) {
+ kthread_bind(task, cpu);
+ wake_up_process(task);
+ }
+ }
+
+ comp_pool_callback_nb.notifier_call = comp_pool_callback;
+ comp_pool_callback_nb.priority =0;
+ register_cpu_notifier(&comp_pool_callback_nb);
+#endif
+
+ return 0;
+}
+
+void ehca_destroy_comp_pool(void)
+{
+#ifdef CONFIG_INFINIBAND_EHCA_SCALING
+ int i;
+
+ unregister_cpu_notifier(&comp_pool_callback_nb);
+
+ for (i = 0; i < NR_CPUS; i++) {
+ if (cpu_online(i))
+ destroy_comp_task(pool, i);
+ }
+#endif
+
+ return;
+}
diff --git a/drivers/infiniband/hw/ehca/ehca_irq.h b/drivers/infiniband/hw/ehca/ehca_irq.h
new file mode 100644
index 0000000..85bf1fe
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_irq.h
@@ -0,0 +1,77 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * Function definitions and structs for EQs, NEQs and interrupts
+ *
+ * Authors: Heiko J Schick <schickhj@de.ibm.com>
+ * Khadija Souissi <souissi@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __EHCA_IRQ_H
+#define __EHCA_IRQ_H
+
+
+struct ehca_shca;
+
+#include <linux/interrupt.h>
+#include <linux/types.h>
+#include <asm/atomic.h>
+
+int ehca_error_data(struct ehca_shca *shca, void *data, u64 resource);
+
+irqreturn_t ehca_interrupt_neq(int irq, void *dev_id, struct pt_regs *regs);
+void ehca_tasklet_neq(unsigned long data);
+
+irqreturn_t ehca_interrupt_eq(int irq, void *dev_id, struct pt_regs *regs);
+void ehca_tasklet_eq(unsigned long data);
+
+struct ehca_cpu_comp_task {
+ wait_queue_head_t wait_queue;
+ struct list_head cq_list;
+ struct task_struct *task;
+ spinlock_t task_lock;
+ int cq_jobs;
+};
+
+struct ehca_comp_pool {
+ struct ehca_cpu_comp_task *cpu_comp_tasks;
+ int last_cpu;
+ spinlock_t last_cpu_lock;
+};
+
+int ehca_create_comp_pool(void);
+void ehca_destroy_comp_pool(void);
+
+#endif
diff --git a/drivers/infiniband/hw/ehca/ehca_iverbs.h b/drivers/infiniband/hw/ehca/ehca_iverbs.h
new file mode 100644
index 0000000..bbdc437
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_iverbs.h
@@ -0,0 +1,181 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * Function definitions for internal functions
+ *
+ * Authors: Heiko J Schick <schickhj@de.ibm.com>
+ * Dietmar Decker <ddecker@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __EHCA_IVERBS_H__
+#define __EHCA_IVERBS_H__
+
+#include "ehca_classes.h"
+
+int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props);
+
+int ehca_query_port(struct ib_device *ibdev, u8 port,
+ struct ib_port_attr *props);
+
+int ehca_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 * pkey);
+
+int ehca_query_gid(struct ib_device *ibdev, u8 port, int index,
+ union ib_gid *gid);
+
+int ehca_modify_port(struct ib_device *ibdev, u8 port, int port_modify_mask,
+ struct ib_port_modify *props);
+
+struct ib_pd *ehca_alloc_pd(struct ib_device *device,
+ struct ib_ucontext *context,
+ struct ib_udata *udata);
+
+int ehca_dealloc_pd(struct ib_pd *pd);
+
+struct ib_ah *ehca_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
+
+int ehca_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
+
+int ehca_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
+
+int ehca_destroy_ah(struct ib_ah *ah);
+
+struct ib_mr *ehca_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
+
+struct ib_mr *ehca_reg_phys_mr(struct ib_pd *pd,
+ struct ib_phys_buf *phys_buf_array,
+ int num_phys_buf,
+ int mr_access_flags, u64 *iova_start);
+
+struct ib_mr *ehca_reg_user_mr(struct ib_pd *pd,
+ struct ib_umem *region,
+ int mr_access_flags, struct ib_udata *udata);
+
+int ehca_rereg_phys_mr(struct ib_mr *mr,
+ int mr_rereg_mask,
+ struct ib_pd *pd,
+ struct ib_phys_buf *phys_buf_array,
+ int num_phys_buf, int mr_access_flags, u64 *iova_start);
+
+int ehca_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
+
+int ehca_dereg_mr(struct ib_mr *mr);
+
+struct ib_mw *ehca_alloc_mw(struct ib_pd *pd);
+
+int ehca_bind_mw(struct ib_qp *qp, struct ib_mw *mw,
+ struct ib_mw_bind *mw_bind);
+
+int ehca_dealloc_mw(struct ib_mw *mw);
+
+struct ib_fmr *ehca_alloc_fmr(struct ib_pd *pd,
+ int mr_access_flags,
+ struct ib_fmr_attr *fmr_attr);
+
+int ehca_map_phys_fmr(struct ib_fmr *fmr,
+ u64 *page_list, int list_len, u64 iova);
+
+int ehca_unmap_fmr(struct list_head *fmr_list);
+
+int ehca_dealloc_fmr(struct ib_fmr *fmr);
+
+enum ehca_eq_type {
+ EHCA_EQ = 0, /* Event Queue */
+ EHCA_NEQ /* Notification Event Queue */
+};
+
+int ehca_create_eq(struct ehca_shca *shca, struct ehca_eq *eq,
+ enum ehca_eq_type type, const u32 length);
+
+int ehca_destroy_eq(struct ehca_shca *shca, struct ehca_eq *eq);
+
+void *ehca_poll_eq(struct ehca_shca *shca, struct ehca_eq *eq);
+
+
+struct ib_cq *ehca_create_cq(struct ib_device *device, int cqe,
+ struct ib_ucontext *context,
+ struct ib_udata *udata);
+
+int ehca_destroy_cq(struct ib_cq *cq);
+
+int ehca_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata);
+
+int ehca_poll_cq(struct ib_cq *cq, int num_entries, struct ib_wc *wc);
+
+int ehca_peek_cq(struct ib_cq *cq, int wc_cnt);
+
+int ehca_req_notify_cq(struct ib_cq *cq, enum ib_cq_notify cq_notify);
+
+struct ib_qp *ehca_create_qp(struct ib_pd *pd,
+ struct ib_qp_init_attr *init_attr,
+ struct ib_udata *udata);
+
+int ehca_destroy_qp(struct ib_qp *qp);
+
+int ehca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask);
+
+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);
+
+int ehca_post_send(struct ib_qp *qp, struct ib_send_wr *send_wr,
+ struct ib_send_wr **bad_send_wr);
+
+int ehca_post_recv(struct ib_qp *qp, struct ib_recv_wr *recv_wr,
+ struct ib_recv_wr **bad_recv_wr);
+
+u64 ehca_define_sqp(struct ehca_shca *shca, struct ehca_qp *ibqp,
+ struct ib_qp_init_attr *qp_init_attr);
+
+int ehca_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
+
+int ehca_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
+
+struct ib_ucontext *ehca_alloc_ucontext(struct ib_device *device,
+ struct ib_udata *udata);
+
+int ehca_dealloc_ucontext(struct ib_ucontext *context);
+
+int ehca_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);
+
+void ehca_poll_eqs(unsigned long data);
+
+int ehca_mmap_nopage(u64 foffset,u64 length,void **mapped,
+ struct vm_area_struct **vma);
+
+int ehca_mmap_register(u64 physical,void **mapped,
+ struct vm_area_struct **vma);
+
+int ehca_munmap(unsigned long addr, size_t len);
+
+#endif
diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c
new file mode 100644
index 0000000..2a99f2d
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_main.c
@@ -0,0 +1,818 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * module start stop, hca detection
+ *
+ * Authors: Heiko J Schick <schickhj@de.ibm.com>
+ * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ * Joachim Fenkes <fenkes@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "ehca_classes.h"
+#include "ehca_iverbs.h"
+#include "ehca_mrmw.h"
+#include "ehca_tools.h"
+#include "hcp_if.h"
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
+MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver");
+MODULE_VERSION("SVNEHCA_0016");
+
+int ehca_open_aqp1 = 0;
+int ehca_debug_level = 0;
+int ehca_hw_level = 0;
+int ehca_nr_ports = 2;
+int ehca_use_hp_mr = 0;
+int ehca_port_act_time = 30;
+int ehca_poll_all_eqs = 1;
+int ehca_static_rate = -1;
+
+module_param_named(open_aqp1, ehca_open_aqp1, int, 0);
+module_param_named(debug_level, ehca_debug_level, int, 0);
+module_param_named(hw_level, ehca_hw_level, int, 0);
+module_param_named(nr_ports, ehca_nr_ports, int, 0);
+module_param_named(use_hp_mr, ehca_use_hp_mr, int, 0);
+module_param_named(port_act_time, ehca_port_act_time, int, 0);
+module_param_named(poll_all_eqs, ehca_poll_all_eqs, int, 0);
+module_param_named(static_rate, ehca_static_rate, int, 0);
+
+MODULE_PARM_DESC(open_aqp1,
+ "AQP1 on startup (0: no (default), 1: yes)");
+MODULE_PARM_DESC(debug_level,
+ "debug level"
+ " (0: no debug traces (default), 1: with debug traces)");
+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)");
+MODULE_PARM_DESC(use_hp_mr,
+ "high performance MRs (0: no (default), 1: yes)");
+MODULE_PARM_DESC(port_act_time,
+ "time to wait for port activation (default: 30 sec)");
+MODULE_PARM_DESC(poll_all_eqs,
+ "polls all event queues periodically"
+ " (0: no, 1: yes (default))");
+MODULE_PARM_DESC(static_rate,
+ "set permanent static rate (default: disabled)");
+
+spinlock_t ehca_qp_idr_lock;
+spinlock_t ehca_cq_idr_lock;
+DEFINE_IDR(ehca_qp_idr);
+DEFINE_IDR(ehca_cq_idr);
+
+static struct list_head shca_list; /* list of all registered ehcas */
+static spinlock_t shca_list_lock;
+
+static struct timer_list poll_eqs_timer;
+
+static int ehca_create_slab_caches(void)
+{
+ int ret;
+
+ ret = ehca_init_pd_cache();
+ if (ret) {
+ ehca_gen_err("Cannot create PD SLAB cache.");
+ return ret;
+ }
+
+ ret = ehca_init_cq_cache();
+ if (ret) {
+ ehca_gen_err("Cannot create CQ SLAB cache.");
+ goto create_slab_caches2;
+ }
+
+ ret = ehca_init_qp_cache();
+ if (ret) {
+ ehca_gen_err("Cannot create QP SLAB cache.");
+ goto create_slab_caches3;
+ }
+
+ ret = ehca_init_av_cache();
+ if (ret) {
+ ehca_gen_err("Cannot create AV SLAB cache.");
+ goto create_slab_caches4;
+ }
+
+ ret = ehca_init_mrmw_cache();
+ if (ret) {
+ ehca_gen_err("Cannot create MR&MW SLAB cache.");
+ goto create_slab_caches5;
+ }
+
+ return 0;
+
+create_slab_caches5:
+ ehca_cleanup_av_cache();
+
+create_slab_caches4:
+ ehca_cleanup_qp_cache();
+
+create_slab_caches3:
+ ehca_cleanup_cq_cache();
+
+create_slab_caches2:
+ ehca_cleanup_pd_cache();
+
+ return ret;
+}
+
+static void ehca_destroy_slab_caches(void)
+{
+ ehca_cleanup_mrmw_cache();
+ ehca_cleanup_av_cache();
+ ehca_cleanup_qp_cache();
+ ehca_cleanup_cq_cache();
+ ehca_cleanup_pd_cache();
+}
+
+#define EHCA_HCAAVER EHCA_BMASK_IBM(32,39)
+#define EHCA_REVID EHCA_BMASK_IBM(40,63)
+
+int ehca_sense_attributes(struct ehca_shca *shca)
+{
+ int ret = 0;
+ u64 h_ret;
+ struct hipz_query_hca *rblock;
+
+ rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+ if (!rblock) {
+ ehca_gen_err("Cannot allocate rblock memory.");
+ return -ENOMEM;
+ }
+
+ h_ret = hipz_h_query_hca(shca->ipz_hca_handle, rblock);
+ if (h_ret != H_SUCCESS) {
+ ehca_gen_err("Cannot query device properties. h_ret=%lx",
+ h_ret);
+ ret = -EPERM;
+ goto num_ports1;
+ }
+
+ if (ehca_nr_ports == 1)
+ shca->num_ports = 1;
+ else
+ shca->num_ports = (u8)rblock->num_ports;
+
+ ehca_gen_dbg(" ... found %x ports", rblock->num_ports);
+
+ if (ehca_hw_level == 0) {
+ u32 hcaaver;
+ u32 revid;
+
+ hcaaver = EHCA_BMASK_GET(EHCA_HCAAVER, rblock->hw_ver);
+ revid = EHCA_BMASK_GET(EHCA_REVID, rblock->hw_ver);
+
+ ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid);
+
+ if ((hcaaver == 1) && (revid == 0))
+ shca->hw_level = 0;
+ else if ((hcaaver == 1) && (revid == 1))
+ shca->hw_level = 1;
+ else if ((hcaaver == 1) && (revid == 2))
+ shca->hw_level = 2;
+ }
+ 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:
+ kfree(rblock);
+ return ret;
+}
+
+static int init_node_guid(struct ehca_shca *shca)
+{
+ int ret = 0;
+ struct hipz_query_hca *rblock;
+
+ rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+ if (!rblock) {
+ ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
+ return -ENOMEM;
+ }
+
+ if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
+ ehca_err(&shca->ib_device, "Can't query device properties");
+ ret = -EINVAL;
+ goto init_node_guid1;
+ }
+
+ memcpy(&shca->ib_device.node_guid, &rblock->node_guid, sizeof(u64));
+
+init_node_guid1:
+ kfree(rblock);
+ return ret;
+}
+
+int ehca_register_device(struct ehca_shca *shca)
+{
+ int ret;
+
+ ret = init_node_guid(shca);
+ if (ret)
+ return ret;
+
+ strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX);
+ shca->ib_device.owner = THIS_MODULE;
+
+ shca->ib_device.uverbs_abi_ver = 5;
+ shca->ib_device.uverbs_cmd_mask =
+ (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
+ (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
+ (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
+ (1ull << IB_USER_VERBS_CMD_REG_MR) |
+ (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
+ (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
+ (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
+ (1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
+
+ shca->ib_device.node_type = IB_NODE_CA;
+ shca->ib_device.phys_port_cnt = shca->num_ports;
+ shca->ib_device.dma_device = &shca->ibmebus_dev->ofdev.dev;
+ shca->ib_device.query_device = ehca_query_device;
+ shca->ib_device.query_port = ehca_query_port;
+ shca->ib_device.query_gid = ehca_query_gid;
+ shca->ib_device.query_pkey = ehca_query_pkey;
+ /* shca->in_device.modify_device = ehca_modify_device */
+ shca->ib_device.modify_port = ehca_modify_port;
+ shca->ib_device.alloc_ucontext = ehca_alloc_ucontext;
+ shca->ib_device.dealloc_ucontext = ehca_dealloc_ucontext;
+ shca->ib_device.alloc_pd = ehca_alloc_pd;
+ shca->ib_device.dealloc_pd = ehca_dealloc_pd;
+ shca->ib_device.create_ah = ehca_create_ah;
+ /* shca->ib_device.modify_ah = ehca_modify_ah; */
+ shca->ib_device.query_ah = ehca_query_ah;
+ shca->ib_device.destroy_ah = ehca_destroy_ah;
+ shca->ib_device.create_qp = ehca_create_qp;
+ shca->ib_device.modify_qp = ehca_modify_qp;
+ shca->ib_device.query_qp = ehca_query_qp;
+ shca->ib_device.destroy_qp = ehca_destroy_qp;
+ shca->ib_device.post_send = ehca_post_send;
+ shca->ib_device.post_recv = ehca_post_recv;
+ shca->ib_device.create_cq = ehca_create_cq;
+ shca->ib_device.destroy_cq = ehca_destroy_cq;
+ shca->ib_device.resize_cq = ehca_resize_cq;
+ shca->ib_device.poll_cq = ehca_poll_cq;
+ /* shca->ib_device.peek_cq = ehca_peek_cq; */
+ shca->ib_device.req_notify_cq = ehca_req_notify_cq;
+ /* shca->ib_device.req_ncomp_notif = ehca_req_ncomp_notif; */
+ shca->ib_device.get_dma_mr = ehca_get_dma_mr;
+ shca->ib_device.reg_phys_mr = ehca_reg_phys_mr;
+ shca->ib_device.reg_user_mr = ehca_reg_user_mr;
+ shca->ib_device.query_mr = ehca_query_mr;
+ shca->ib_device.dereg_mr = ehca_dereg_mr;
+ shca->ib_device.rereg_phys_mr = ehca_rereg_phys_mr;
+ shca->ib_device.alloc_mw = ehca_alloc_mw;
+ shca->ib_device.bind_mw = ehca_bind_mw;
+ shca->ib_device.dealloc_mw = ehca_dealloc_mw;
+ shca->ib_device.alloc_fmr = ehca_alloc_fmr;
+ shca->ib_device.map_phys_fmr = ehca_map_phys_fmr;
+ shca->ib_device.unmap_fmr = ehca_unmap_fmr;
+ shca->ib_device.dealloc_fmr = ehca_dealloc_fmr;
+ shca->ib_device.attach_mcast = ehca_attach_mcast;
+ shca->ib_device.detach_mcast = ehca_detach_mcast;
+ /* shca->ib_device.process_mad = ehca_process_mad; */
+ shca->ib_device.mmap = ehca_mmap;
+
+ ret = ib_register_device(&shca->ib_device);
+ if (ret)
+ ehca_err(&shca->ib_device,
+ "ib_register_device() failed ret=%x", ret);
+
+ return ret;
+}
+
+static int ehca_create_aqp1(struct ehca_shca *shca, u32 port)
+{
+ struct ehca_sport *sport = &shca->sport[port - 1];
+ struct ib_cq *ibcq;
+ struct ib_qp *ibqp;
+ struct ib_qp_init_attr qp_init_attr;
+ int ret;
+
+ if (sport->ibcq_aqp1) {
+ ehca_err(&shca->ib_device, "AQP1 CQ is already created.");
+ return -EPERM;
+ }
+
+ ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void*)(-1), 10);
+ if (IS_ERR(ibcq)) {
+ ehca_err(&shca->ib_device, "Cannot create AQP1 CQ.");
+ return PTR_ERR(ibcq);
+ }
+ sport->ibcq_aqp1 = ibcq;
+
+ if (sport->ibqp_aqp1) {
+ ehca_err(&shca->ib_device, "AQP1 QP is already created.");
+ ret = -EPERM;
+ goto create_aqp1;
+ }
+
+ memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr));
+ qp_init_attr.send_cq = ibcq;
+ qp_init_attr.recv_cq = ibcq;
+ qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR;
+ qp_init_attr.cap.max_send_wr = 100;
+ qp_init_attr.cap.max_recv_wr = 100;
+ qp_init_attr.cap.max_send_sge = 2;
+ qp_init_attr.cap.max_recv_sge = 1;
+ qp_init_attr.qp_type = IB_QPT_GSI;
+ qp_init_attr.port_num = port;
+ qp_init_attr.qp_context = NULL;
+ qp_init_attr.event_handler = NULL;
+ qp_init_attr.srq = NULL;
+
+ ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr);
+ if (IS_ERR(ibqp)) {
+ ehca_err(&shca->ib_device, "Cannot create AQP1 QP.");
+ ret = PTR_ERR(ibqp);
+ goto create_aqp1;
+ }
+ sport->ibqp_aqp1 = ibqp;
+
+ return 0;
+
+create_aqp1:
+ ib_destroy_cq(sport->ibcq_aqp1);
+ return ret;
+}
+
+static int ehca_destroy_aqp1(struct ehca_sport *sport)
+{
+ int ret;
+
+ ret = ib_destroy_qp(sport->ibqp_aqp1);
+ if (ret) {
+ ehca_gen_err("Cannot destroy AQP1 QP. ret=%x", ret);
+ return ret;
+ }
+
+ ret = ib_destroy_cq(sport->ibcq_aqp1);
+ if (ret)
+ ehca_gen_err("Cannot destroy AQP1 CQ. ret=%x", ret);
+
+ return ret;
+}
+
+static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ ehca_debug_level);
+}
+
+static ssize_t ehca_store_debug_level(struct device_driver *ddp,
+ const char *buf, size_t count)
+{
+ int value = (*buf) - '0';
+ if (value >= 0 && value <= 9)
+ ehca_debug_level = value;
+ return 1;
+}
+
+DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR,
+ ehca_show_debug_level, ehca_store_debug_level);
+
+void ehca_create_driver_sysfs(struct ibmebus_driver *drv)
+{
+ driver_create_file(&drv->driver, &driver_attr_debug_level);
+}
+
+void ehca_remove_driver_sysfs(struct ibmebus_driver *drv)
+{
+ driver_remove_file(&drv->driver, &driver_attr_debug_level);
+}
+
+#define EHCA_RESOURCE_ATTR(name) \
+static ssize_t ehca_show_##name(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+{ \
+ struct ehca_shca *shca; \
+ struct hipz_query_hca *rblock; \
+ int data; \
+ \
+ shca = dev->driver_data; \
+ \
+ rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); \
+ if (!rblock) { \
+ dev_err(dev, "Can't allocate rblock memory."); \
+ return 0; \
+ } \
+ \
+ if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \
+ dev_err(dev, "Can't query device properties"); \
+ kfree(rblock); \
+ return 0; \
+ } \
+ \
+ data = rblock->name; \
+ kfree(rblock); \
+ \
+ if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \
+ return snprintf(buf, 256, "1\n"); \
+ else \
+ return snprintf(buf, 256, "%d\n", data); \
+ \
+} \
+static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL);
+
+EHCA_RESOURCE_ATTR(num_ports);
+EHCA_RESOURCE_ATTR(hw_ver);
+EHCA_RESOURCE_ATTR(max_eq);
+EHCA_RESOURCE_ATTR(cur_eq);
+EHCA_RESOURCE_ATTR(max_cq);
+EHCA_RESOURCE_ATTR(cur_cq);
+EHCA_RESOURCE_ATTR(max_qp);
+EHCA_RESOURCE_ATTR(cur_qp);
+EHCA_RESOURCE_ATTR(max_mr);
+EHCA_RESOURCE_ATTR(cur_mr);
+EHCA_RESOURCE_ATTR(max_mw);
+EHCA_RESOURCE_ATTR(cur_mw);
+EHCA_RESOURCE_ATTR(max_pd);
+EHCA_RESOURCE_ATTR(max_ah);
+
+static ssize_t ehca_show_adapter_handle(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ehca_shca *shca = dev->driver_data;
+
+ return sprintf(buf, "%lx\n", shca->ipz_hca_handle.handle);
+
+}
+static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL);
+
+
+void ehca_create_device_sysfs(struct ibmebus_dev *dev)
+{
+ device_create_file(&dev->ofdev.dev, &dev_attr_adapter_handle);
+ device_create_file(&dev->ofdev.dev, &dev_attr_num_ports);
+ device_create_file(&dev->ofdev.dev, &dev_attr_hw_ver);
+ device_create_file(&dev->ofdev.dev, &dev_attr_max_eq);
+ device_create_file(&dev->ofdev.dev, &dev_attr_cur_eq);
+ device_create_file(&dev->ofdev.dev, &dev_attr_max_cq);
+ device_create_file(&dev->ofdev.dev, &dev_attr_cur_cq);
+ device_create_file(&dev->ofdev.dev, &dev_attr_max_qp);
+ device_create_file(&dev->ofdev.dev, &dev_attr_cur_qp);
+ device_create_file(&dev->ofdev.dev, &dev_attr_max_mr);
+ device_create_file(&dev->ofdev.dev, &dev_attr_cur_mr);
+ device_create_file(&dev->ofdev.dev, &dev_attr_max_mw);
+ device_create_file(&dev->ofdev.dev, &dev_attr_cur_mw);
+ device_create_file(&dev->ofdev.dev, &dev_attr_max_pd);
+ device_create_file(&dev->ofdev.dev, &dev_attr_max_ah);
+}
+
+void ehca_remove_device_sysfs(struct ibmebus_dev *dev)
+{
+ device_remove_file(&dev->ofdev.dev, &dev_attr_adapter_handle);
+ device_remove_file(&dev->ofdev.dev, &dev_attr_num_ports);
+ device_remove_file(&dev->ofdev.dev, &dev_attr_hw_ver);
+ device_remove_file(&dev->ofdev.dev, &dev_attr_max_eq);
+ device_remove_file(&dev->ofdev.dev, &dev_attr_cur_eq);
+ device_remove_file(&dev->ofdev.dev, &dev_attr_max_cq);
+ device_remove_file(&dev->ofdev.dev, &dev_attr_cur_cq);
+ device_remove_file(&dev->ofdev.dev, &dev_attr_max_qp);
+ device_remove_file(&dev->ofdev.dev, &dev_attr_cur_qp);
+ device_remove_file(&dev->ofdev.dev, &dev_attr_max_mr);
+ device_remove_file(&dev->ofdev.dev, &dev_attr_cur_mr);
+ device_remove_file(&dev->ofdev.dev, &dev_attr_max_mw);
+ device_remove_file(&dev->ofdev.dev, &dev_attr_cur_mw);
+ device_remove_file(&dev->ofdev.dev, &dev_attr_max_pd);
+ device_remove_file(&dev->ofdev.dev, &dev_attr_max_ah);
+}
+
+static int __devinit ehca_probe(struct ibmebus_dev *dev,
+ const struct of_device_id *id)
+{
+ struct ehca_shca *shca;
+ u64 *handle;
+ struct ib_pd *ibpd;
+ int ret;
+
+ handle = (u64 *)get_property(dev->ofdev.node, "ibm,hca-handle", NULL);
+ if (!handle) {
+ ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
+ dev->ofdev.node->full_name);
+ return -ENODEV;
+ }
+
+ if (!(*handle)) {
+ ehca_gen_err("Wrong eHCA handle for adapter: %s.",
+ dev->ofdev.node->full_name);
+ return -ENODEV;
+ }
+
+ shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca));
+ if (!shca) {
+ ehca_gen_err("Cannot allocate shca memory.");
+ return -ENOMEM;
+ }
+
+ shca->ibmebus_dev = dev;
+ shca->ipz_hca_handle.handle = *handle;
+ dev->ofdev.dev.driver_data = shca;
+
+ ret = ehca_sense_attributes(shca);
+ if (ret < 0) {
+ ehca_gen_err("Cannot sense eHCA attributes.");
+ goto probe1;
+ }
+
+ ret = ehca_register_device(shca);
+ if (ret) {
+ ehca_gen_err("Cannot register Infiniband device");
+ goto probe1;
+ }
+
+ /* create event queues */
+ ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, 2048);
+ if (ret) {
+ ehca_err(&shca->ib_device, "Cannot create EQ.");
+ goto probe2;
+ }
+
+ ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513);
+ if (ret) {
+ ehca_err(&shca->ib_device, "Cannot create NEQ.");
+ goto probe3;
+ }
+
+ /* create internal protection domain */
+ ibpd = ehca_alloc_pd(&shca->ib_device, (void*)(-1), NULL);
+ if (IS_ERR(ibpd)) {
+ ehca_err(&shca->ib_device, "Cannot create internal PD.");
+ ret = PTR_ERR(ibpd);
+ goto probe4;
+ }
+
+ shca->pd = container_of(ibpd, struct ehca_pd, ib_pd);
+ shca->pd->ib_pd.device = &shca->ib_device;
+
+ /* create internal max MR */
+ ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr);
+
+ if (ret) {
+ ehca_err(&shca->ib_device, "Cannot create internal MR ret=%x",
+ ret);
+ goto probe5;
+ }
+
+ /* create AQP1 for port 1 */
+ if (ehca_open_aqp1 == 1) {
+ shca->sport[0].port_state = IB_PORT_DOWN;
+ ret = ehca_create_aqp1(shca, 1);
+ if (ret) {
+ ehca_err(&shca->ib_device,
+ "Cannot create AQP1 for port 1.");
+ goto probe6;
+ }
+ }
+
+ /* create AQP1 for port 2 */
+ if ((ehca_open_aqp1 == 1) && (shca->num_ports == 2)) {
+ shca->sport[1].port_state = IB_PORT_DOWN;
+ ret = ehca_create_aqp1(shca, 2);
+ if (ret) {
+ ehca_err(&shca->ib_device,
+ "Cannot create AQP1 for port 2.");
+ goto probe7;
+ }
+ }
+
+ ehca_create_device_sysfs(dev);
+
+ spin_lock(&shca_list_lock);
+ list_add(&shca->shca_list, &shca_list);
+ spin_unlock(&shca_list_lock);
+
+ return 0;
+
+probe7:
+ ret = ehca_destroy_aqp1(&shca->sport[0]);
+ if (ret)
+ ehca_err(&shca->ib_device,
+ "Cannot destroy AQP1 for port 1. ret=%x", ret);
+
+probe6:
+ ret = ehca_dereg_internal_maxmr(shca);
+ if (ret)
+ ehca_err(&shca->ib_device,
+ "Cannot destroy internal MR. ret=%x", ret);
+
+probe5:
+ ret = ehca_dealloc_pd(&shca->pd->ib_pd);
+ if (ret)
+ ehca_err(&shca->ib_device,
+ "Cannot destroy internal PD. ret=%x", ret);
+
+probe4:
+ ret = ehca_destroy_eq(shca, &shca->neq);
+ if (ret)
+ ehca_err(&shca->ib_device,
+ "Cannot destroy NEQ. ret=%x", ret);
+
+probe3:
+ ret = ehca_destroy_eq(shca, &shca->eq);
+ if (ret)
+ ehca_err(&shca->ib_device,
+ "Cannot destroy EQ. ret=%x", ret);
+
+probe2:
+ ib_unregister_device(&shca->ib_device);
+
+probe1:
+ ib_dealloc_device(&shca->ib_device);
+
+ return -EINVAL;
+}
+
+static int __devexit ehca_remove(struct ibmebus_dev *dev)
+{
+ struct ehca_shca *shca = dev->ofdev.dev.driver_data;
+ int ret;
+
+ ehca_remove_device_sysfs(dev);
+
+ if (ehca_open_aqp1 == 1) {
+ int i;
+ for (i = 0; i < shca->num_ports; i++) {
+ ret = ehca_destroy_aqp1(&shca->sport[i]);
+ if (ret)
+ ehca_err(&shca->ib_device,
+ "Cannot destroy AQP1 for port %x "
+ "ret=%x", ret, i);
+ }
+ }
+
+ ib_unregister_device(&shca->ib_device);
+
+ ret = ehca_dereg_internal_maxmr(shca);
+ if (ret)
+ ehca_err(&shca->ib_device,
+ "Cannot destroy internal MR. ret=%x", ret);
+
+ ret = ehca_dealloc_pd(&shca->pd->ib_pd);
+ if (ret)
+ ehca_err(&shca->ib_device,
+ "Cannot destroy internal PD. ret=%x", ret);
+
+ ret = ehca_destroy_eq(shca, &shca->eq);
+ if (ret)
+ ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%x", ret);
+
+ ret = ehca_destroy_eq(shca, &shca->neq);
+ if (ret)
+ ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%x", ret);
+
+ ib_dealloc_device(&shca->ib_device);
+
+ spin_lock(&shca_list_lock);
+ list_del(&shca->shca_list);
+ spin_unlock(&shca_list_lock);
+
+ return ret;
+}
+
+static struct of_device_id ehca_device_table[] =
+{
+ {
+ .name = "lhca",
+ .compatible = "IBM,lhca",
+ },
+ {},
+};
+
+static struct ibmebus_driver ehca_driver = {
+ .name = "ehca",
+ .id_table = ehca_device_table,
+ .probe = ehca_probe,
+ .remove = ehca_remove,
+};
+
+void ehca_poll_eqs(unsigned long data)
+{
+ struct ehca_shca *shca;
+
+ spin_lock(&shca_list_lock);
+ list_for_each_entry(shca, &shca_list, shca_list) {
+ if (shca->eq.is_initialized)
+ ehca_tasklet_eq((unsigned long)(void*)shca);
+ }
+ mod_timer(&poll_eqs_timer, jiffies + HZ);
+ spin_unlock(&shca_list_lock);
+}
+
+int __init ehca_module_init(void)
+{
+ int ret;
+
+ printk(KERN_INFO "eHCA Infiniband Device Driver "
+ "(Rel.: SVNEHCA_0016)\n");
+ idr_init(&ehca_qp_idr);
+ idr_init(&ehca_cq_idr);
+ spin_lock_init(&ehca_qp_idr_lock);
+ spin_lock_init(&ehca_cq_idr_lock);
+
+ INIT_LIST_HEAD(&shca_list);
+ spin_lock_init(&shca_list_lock);
+
+ if ((ret = ehca_create_comp_pool())) {
+ ehca_gen_err("Cannot create comp pool.");
+ return ret;
+ }
+
+ if ((ret = ehca_create_slab_caches())) {
+ ehca_gen_err("Cannot create SLAB caches");
+ ret = -ENOMEM;
+ goto module_init1;
+ }
+
+ if ((ret = ibmebus_register_driver(&ehca_driver))) {
+ ehca_gen_err("Cannot register eHCA device driver");
+ ret = -EINVAL;
+ goto module_init2;
+ }
+
+ ehca_create_driver_sysfs(&ehca_driver);
+
+ if (ehca_poll_all_eqs != 1) {
+ ehca_gen_err("WARNING!!!");
+ ehca_gen_err("It is possible to lose interrupts.");
+ } else {
+ init_timer(&poll_eqs_timer);
+ poll_eqs_timer.function = ehca_poll_eqs;
+ poll_eqs_timer.expires = jiffies + HZ;
+ add_timer(&poll_eqs_timer);
+ }
+
+ return 0;
+
+module_init2:
+ ehca_destroy_slab_caches();
+
+module_init1:
+ ehca_destroy_comp_pool();
+ return ret;
+};
+
+void __exit ehca_module_exit(void)
+{
+ if (ehca_poll_all_eqs == 1)
+ del_timer_sync(&poll_eqs_timer);
+
+ ehca_remove_driver_sysfs(&ehca_driver);
+ ibmebus_unregister_driver(&ehca_driver);
+
+ ehca_destroy_slab_caches();
+
+ ehca_destroy_comp_pool();
+
+ idr_destroy(&ehca_cq_idr);
+ idr_destroy(&ehca_qp_idr);
+};
+
+module_init(ehca_module_init);
+module_exit(ehca_module_exit);
diff --git a/drivers/infiniband/hw/ehca/ehca_mcast.c b/drivers/infiniband/hw/ehca/ehca_mcast.c
new file mode 100644
index 0000000..32a8706
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_mcast.c
@@ -0,0 +1,131 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * mcast functions
+ *
+ * Authors: Khadija Souissi <souissik@de.ibm.com>
+ * Waleri Fomin <fomin@de.ibm.com>
+ * Reinhard Ernst <rernst@de.ibm.com>
+ * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ * Heiko J Schick <schickhj@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#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"
+
+#define MAX_MC_LID 0xFFFE
+#define MIN_MC_LID 0xC000 /* Multicast limits */
+#define EHCA_VALID_MULTICAST_GID(gid) ((gid)[0] == 0xFF)
+#define EHCA_VALID_MULTICAST_LID(lid) \
+ (((lid) >= MIN_MC_LID) && ((lid) <= MAX_MC_LID))
+
+int ehca_attach_mcast(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+ struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp);
+ struct ehca_shca *shca = container_of(ibqp->device, struct ehca_shca,
+ ib_device);
+ union ib_gid my_gid;
+ u64 subnet_prefix, interface_id, h_ret;
+
+ if (ibqp->qp_type != IB_QPT_UD) {
+ ehca_err(ibqp->device, "invalid qp_type=%x", ibqp->qp_type);
+ return -EINVAL;
+ }
+
+ if (!(EHCA_VALID_MULTICAST_GID(gid->raw))) {
+ ehca_err(ibqp->device, "invalid mulitcast gid");
+ return -EINVAL;
+ } else if ((lid < MIN_MC_LID) || (lid > MAX_MC_LID)) {
+ ehca_err(ibqp->device, "invalid mulitcast lid=%x", lid);
+ return -EINVAL;
+ }
+
+ memcpy(&my_gid.raw, gid->raw, sizeof(union ib_gid));
+
+ subnet_prefix = be64_to_cpu(my_gid.global.subnet_prefix);
+ interface_id = be64_to_cpu(my_gid.global.interface_id);
+ h_ret = hipz_h_attach_mcqp(shca->ipz_hca_handle,
+ my_qp->ipz_qp_handle,
+ my_qp->galpas.kernel,
+ lid, subnet_prefix, interface_id);
+ if (h_ret != H_SUCCESS)
+ ehca_err(ibqp->device,
+ "ehca_qp=%p qp_num=%x hipz_h_attach_mcqp() failed "
+ "h_ret=%lx", my_qp, ibqp->qp_num, h_ret);
+
+ return ehca2ib_return_code(h_ret);
+}
+
+int ehca_detach_mcast(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+ struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp);
+ struct ehca_shca *shca = container_of(ibqp->pd->device,
+ struct ehca_shca, ib_device);
+ union ib_gid my_gid;
+ u64 subnet_prefix, interface_id, h_ret;
+
+ if (ibqp->qp_type != IB_QPT_UD) {
+ ehca_err(ibqp->device, "invalid qp_type %x", ibqp->qp_type);
+ return -EINVAL;
+ }
+
+ if (!(EHCA_VALID_MULTICAST_GID(gid->raw))) {
+ ehca_err(ibqp->device, "invalid mulitcast gid");
+ return -EINVAL;
+ } else if ((lid < MIN_MC_LID) || (lid > MAX_MC_LID)) {
+ ehca_err(ibqp->device, "invalid mulitcast lid=%x", lid);
+ return -EINVAL;
+ }
+
+ memcpy(&my_gid.raw, gid->raw, sizeof(union ib_gid));
+
+ subnet_prefix = be64_to_cpu(my_gid.global.subnet_prefix);
+ interface_id = be64_to_cpu(my_gid.global.interface_id);
+ h_ret = hipz_h_detach_mcqp(shca->ipz_hca_handle,
+ my_qp->ipz_qp_handle,
+ my_qp->galpas.kernel,
+ lid, subnet_prefix, interface_id);
+ if (h_ret != H_SUCCESS)
+ ehca_err(ibqp->device,
+ "ehca_qp=%p qp_num=%x hipz_h_detach_mcqp() failed "
+ "h_ret=%lx", my_qp, ibqp->qp_num, h_ret);
+
+ return ehca2ib_return_code(h_ret);
+}
diff --git a/drivers/infiniband/hw/ehca/ehca_mrmw.c b/drivers/infiniband/hw/ehca/ehca_mrmw.c
new file mode 100644
index 0000000..5ca6544
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_mrmw.c
@@ -0,0 +1,2261 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * MR/MW functions
+ *
+ * Authors: Dietmar Decker <ddecker@de.ibm.com>
+ * Christoph Raisch <raisch@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <asm/current.h>
+
+#include "ehca_iverbs.h"
+#include "ehca_mrmw.h"
+#include "hcp_if.h"
+#include "hipz_hw.h"
+
+static struct kmem_cache *mr_cache;
+static struct kmem_cache *mw_cache;
+
+static struct ehca_mr *ehca_mr_new(void)
+{
+ struct ehca_mr *me;
+
+ me = kmem_cache_alloc(mr_cache, SLAB_KERNEL);
+ if (me) {
+ memset(me, 0, sizeof(struct ehca_mr));
+ spin_lock_init(&me->mrlock);
+ } else
+ ehca_gen_err("alloc failed");
+
+ return me;
+}
+
+static void ehca_mr_delete(struct ehca_mr *me)
+{
+ kmem_cache_free(mr_cache, me);
+}
+
+static struct ehca_mw *ehca_mw_new(void)
+{
+ struct ehca_mw *me;
+
+ me = kmem_cache_alloc(mw_cache, SLAB_KERNEL);
+ if (me) {
+ memset(me, 0, sizeof(struct ehca_mw));
+ spin_lock_init(&me->mwlock);
+ } else
+ ehca_gen_err("alloc failed");
+
+ return me;
+}
+
+static void ehca_mw_delete(struct ehca_mw *me)
+{
+ kmem_cache_free(mw_cache, me);
+}
+
+/*----------------------------------------------------------------------*/
+
+struct ib_mr *ehca_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
+{
+ struct ib_mr *ib_mr;
+ int ret;
+ struct ehca_mr *e_maxmr;
+ struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd);
+ struct ehca_shca *shca =
+ container_of(pd->device, struct ehca_shca, ib_device);
+
+ if (shca->maxmr) {
+ e_maxmr = ehca_mr_new();
+ if (!e_maxmr) {
+ ehca_err(&shca->ib_device, "out of memory");
+ ib_mr = ERR_PTR(-ENOMEM);
+ goto get_dma_mr_exit0;
+ }
+
+ ret = ehca_reg_maxmr(shca, e_maxmr, (u64*)KERNELBASE,
+ mr_access_flags, e_pd,
+ &e_maxmr->ib.ib_mr.lkey,
+ &e_maxmr->ib.ib_mr.rkey);
+ if (ret) {
+ ib_mr = ERR_PTR(ret);
+ goto get_dma_mr_exit0;
+ }
+ ib_mr = &e_maxmr->ib.ib_mr;
+ } else {
+ ehca_err(&shca->ib_device, "no internal max-MR exist!");
+ ib_mr = ERR_PTR(-EINVAL);
+ goto get_dma_mr_exit0;
+ }
+
+get_dma_mr_exit0:
+ if (IS_ERR(ib_mr))
+ ehca_err(&shca->ib_device, "rc=%lx pd=%p mr_access_flags=%x ",
+ PTR_ERR(ib_mr), pd, mr_access_flags);
+ return ib_mr;
+} /* end ehca_get_dma_mr() */
+
+/*----------------------------------------------------------------------*/
+
+struct ib_mr *ehca_reg_phys_mr(struct ib_pd *pd,
+ struct ib_phys_buf *phys_buf_array,
+ int num_phys_buf,
+ int mr_access_flags,
+ u64 *iova_start)
+{
+ struct ib_mr *ib_mr;
+ int ret;
+ struct ehca_mr *e_mr;
+ struct ehca_shca *shca =
+ container_of(pd->device, struct ehca_shca, ib_device);
+ struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd);
+
+ u64 size;
+ struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0};
+ u32 num_pages_mr;
+ u32 num_pages_4k; /* 4k portion "pages" */
+
+ if ((num_phys_buf <= 0) || !phys_buf_array) {
+ ehca_err(pd->device, "bad input values: num_phys_buf=%x "
+ "phys_buf_array=%p", num_phys_buf, phys_buf_array);
+ ib_mr = ERR_PTR(-EINVAL);
+ goto reg_phys_mr_exit0;
+ }
+ if (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) &&
+ !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) ||
+ ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) &&
+ !(mr_access_flags & IB_ACCESS_LOCAL_WRITE))) {
+ /*
+ * Remote Write Access requires Local Write Access
+ * Remote Atomic Access requires Local Write Access
+ */
+ ehca_err(pd->device, "bad input values: mr_access_flags=%x",
+ mr_access_flags);
+ ib_mr = ERR_PTR(-EINVAL);
+ goto reg_phys_mr_exit0;
+ }
+
+ /* check physical buffer list and calculate size */
+ ret = ehca_mr_chk_buf_and_calc_size(phys_buf_array, num_phys_buf,
+ iova_start, &size);
+ if (ret) {
+ ib_mr = ERR_PTR(ret);
+ goto reg_phys_mr_exit0;
+ }
+ if ((size == 0) ||
+ (((u64)iova_start + size) < (u64)iova_start)) {
+ ehca_err(pd->device, "bad input values: size=%lx iova_start=%p",
+ size, iova_start);
+ ib_mr = ERR_PTR(-EINVAL);
+ goto reg_phys_mr_exit0;
+ }
+
+ e_mr = ehca_mr_new();
+ if (!e_mr) {
+ ehca_err(pd->device, "out of memory");
+ ib_mr = ERR_PTR(-ENOMEM);
+ goto reg_phys_mr_exit0;
+ }
+
+ /* determine number of MR pages */
+ num_pages_mr = ((((u64)iova_start % PAGE_SIZE) + size +
+ PAGE_SIZE - 1) / PAGE_SIZE);
+ num_pages_4k = ((((u64)iova_start % EHCA_PAGESIZE) + size +
+ EHCA_PAGESIZE - 1) / EHCA_PAGESIZE);
+
+ /* register MR on HCA */
+ if (ehca_mr_is_maxmr(size, iova_start)) {
+ e_mr->flags |= EHCA_MR_FLAG_MAXMR;
+ ret = ehca_reg_maxmr(shca, e_mr, iova_start, mr_access_flags,
+ e_pd, &e_mr->ib.ib_mr.lkey,
+ &e_mr->ib.ib_mr.rkey);
+ if (ret) {
+ ib_mr = ERR_PTR(ret);
+ goto reg_phys_mr_exit1;
+ }
+ } else {
+ pginfo.type = EHCA_MR_PGI_PHYS;
+ pginfo.num_pages = num_pages_mr;
+ pginfo.num_4k = num_pages_4k;
+ pginfo.num_phys_buf = num_phys_buf;
+ pginfo.phys_buf_array = phys_buf_array;
+ pginfo.next_4k = (((u64)iova_start & ~PAGE_MASK) /
+ EHCA_PAGESIZE);
+
+ ret = ehca_reg_mr(shca, e_mr, iova_start, size, mr_access_flags,
+ e_pd, &pginfo, &e_mr->ib.ib_mr.lkey,
+ &e_mr->ib.ib_mr.rkey);
+ if (ret) {
+ ib_mr = ERR_PTR(ret);
+ goto reg_phys_mr_exit1;
+ }
+ }
+
+ /* successful registration of all pages */
+ return &e_mr->ib.ib_mr;
+
+reg_phys_mr_exit1:
+ ehca_mr_delete(e_mr);
+reg_phys_mr_exit0:
+ if (IS_ERR(ib_mr))
+ ehca_err(pd->device, "rc=%lx pd=%p phys_buf_array=%p "
+ "num_phys_buf=%x mr_access_flags=%x iova_start=%p",
+ PTR_ERR(ib_mr), pd, phys_buf_array,
+ num_phys_buf, mr_access_flags, iova_start);
+ return ib_mr;
+} /* end ehca_reg_phys_mr() */
+
+/*----------------------------------------------------------------------*/
+
+struct ib_mr *ehca_reg_user_mr(struct ib_pd *pd,
+ struct ib_umem *region,
+ int mr_access_flags,
+ struct ib_udata *udata)
+{
+ struct ib_mr *ib_mr;
+ struct ehca_mr *e_mr;
+ struct ehca_shca *shca =
+ container_of(pd->device, struct ehca_shca, ib_device);
+ struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd);
+ struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0};
+ int ret;
+ u32 num_pages_mr;
+ u32 num_pages_4k; /* 4k portion "pages" */
+
+ if (!pd) {
+ ehca_gen_err("bad pd=%p", pd);
+ return ERR_PTR(-EFAULT);
+ }
+ if (!region) {
+ ehca_err(pd->device, "bad input values: region=%p", region);
+ ib_mr = ERR_PTR(-EINVAL);
+ goto reg_user_mr_exit0;
+ }
+ if (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) &&
+ !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) ||
+ ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) &&
+ !(mr_access_flags & IB_ACCESS_LOCAL_WRITE))) {
+ /*
+ * Remote Write Access requires Local Write Access
+ * Remote Atomic Access requires Local Write Access
+ */
+ ehca_err(pd->device, "bad input values: mr_access_flags=%x",
+ mr_access_flags);
+ ib_mr = ERR_PTR(-EINVAL);
+ goto reg_user_mr_exit0;
+ }
+ if (region->page_size != PAGE_SIZE) {
+ ehca_err(pd->device, "page size not supported, "
+ "region->page_size=%x", region->page_size);
+ ib_mr = ERR_PTR(-EINVAL);
+ goto reg_user_mr_exit0;
+ }
+
+ if ((region->length == 0) ||
+ ((region->virt_base + region->length) < region->virt_base)) {
+ ehca_err(pd->device, "bad input values: length=%lx "
+ "virt_base=%lx", region->length, region->virt_base);
+ ib_mr = ERR_PTR(-EINVAL);
+ goto reg_user_mr_exit0;
+ }
+
+ e_mr = ehca_mr_new();
+ if (!e_mr) {
+ ehca_err(pd->device, "out of memory");
+ ib_mr = ERR_PTR(-ENOMEM);
+ goto reg_user_mr_exit0;
+ }
+
+ /* determine number of MR pages */
+ num_pages_mr = (((region->virt_base % PAGE_SIZE) + region->length +
+ PAGE_SIZE - 1) / PAGE_SIZE);
+ num_pages_4k = (((region->virt_base % EHCA_PAGESIZE) + region->length +
+ EHCA_PAGESIZE - 1) / EHCA_PAGESIZE);
+
+ /* register MR on HCA */
+ pginfo.type = EHCA_MR_PGI_USER;
+ pginfo.num_pages = num_pages_mr;
+ pginfo.num_4k = num_pages_4k;
+ pginfo.region = region;
+ pginfo.next_4k = region->offset / EHCA_PAGESIZE;
+ pginfo.next_chunk = list_prepare_entry(pginfo.next_chunk,
+ (®ion->chunk_list),
+ list);
+
+ ret = ehca_reg_mr(shca, e_mr, (u64*)region->virt_base,
+ region->length, mr_access_flags, e_pd, &pginfo,
+ &e_mr->ib.ib_mr.lkey, &e_mr->ib.ib_mr.rkey);
+ if (ret) {
+ ib_mr = ERR_PTR(ret);
+ goto reg_user_mr_exit1;
+ }
+
+ /* successful registration of all pages */
+ return &e_mr->ib.ib_mr;
+
+reg_user_mr_exit1:
+ ehca_mr_delete(e_mr);
+reg_user_mr_exit0:
+ if (IS_ERR(ib_mr))
+ ehca_err(pd->device, "rc=%lx pd=%p region=%p mr_access_flags=%x"
+ " udata=%p",
+ PTR_ERR(ib_mr), pd, region, mr_access_flags, udata);
+ return ib_mr;
+} /* end ehca_reg_user_mr() */
+
+/*----------------------------------------------------------------------*/
+
+int ehca_rereg_phys_mr(struct ib_mr *mr,
+ int mr_rereg_mask,
+ struct ib_pd *pd,
+ struct ib_phys_buf *phys_buf_array,
+ int num_phys_buf,
+ int mr_access_flags,
+ u64 *iova_start)
+{
+ int ret;
+
+ struct ehca_shca *shca =
+ container_of(mr->device, struct ehca_shca, ib_device);
+ struct ehca_mr *e_mr = container_of(mr, struct ehca_mr, ib.ib_mr);
+ struct ehca_pd *my_pd = container_of(mr->pd, struct ehca_pd, ib_pd);
+ u64 new_size;
+ u64 *new_start;
+ u32 new_acl;
+ struct ehca_pd *new_pd;
+ u32 tmp_lkey, tmp_rkey;
+ unsigned long sl_flags;
+ u32 num_pages_mr = 0;
+ u32 num_pages_4k = 0; /* 4k portion "pages" */
+ struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0};
+ u32 cur_pid = current->tgid;
+
+ if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
+ (my_pd->ownpid != cur_pid)) {
+ ehca_err(mr->device, "Invalid caller pid=%x ownpid=%x",
+ cur_pid, my_pd->ownpid);
+ ret = -EINVAL;
+ goto rereg_phys_mr_exit0;
+ }
+
+ if (!(mr_rereg_mask & IB_MR_REREG_TRANS)) {
+ /* TODO not supported, because PHYP rereg hCall needs pages */
+ ehca_err(mr->device, "rereg without IB_MR_REREG_TRANS not "
+ "supported yet, mr_rereg_mask=%x", mr_rereg_mask);
+ ret = -EINVAL;
+ goto rereg_phys_mr_exit0;
+ }
+
+ if (mr_rereg_mask & IB_MR_REREG_PD) {
+ if (!pd) {
+ ehca_err(mr->device, "rereg with bad pd, pd=%p "
+ "mr_rereg_mask=%x", pd, mr_rereg_mask);
+ ret = -EINVAL;
+ goto rereg_phys_mr_exit0;
+ }
+ }
+
+ if ((mr_rereg_mask &
+ ~(IB_MR_REREG_TRANS | IB_MR_REREG_PD | IB_MR_REREG_ACCESS)) ||
+ (mr_rereg_mask == 0)) {
+ ret = -EINVAL;
+ goto rereg_phys_mr_exit0;
+ }
+
+ /* check other parameters */
+ if (e_mr == shca->maxmr) {
+ /* should be impossible, however reject to be sure */
+ ehca_err(mr->device, "rereg internal max-MR impossible, mr=%p "
+ "shca->maxmr=%p mr->lkey=%x",
+ mr, shca->maxmr, mr->lkey);
+ ret = -EINVAL;
+ goto rereg_phys_mr_exit0;
+ }
+ if (mr_rereg_mask & IB_MR_REREG_TRANS) { /* transl., i.e. addr/size */
+ if (e_mr->flags & EHCA_MR_FLAG_FMR) {
+ ehca_err(mr->device, "not supported for FMR, mr=%p "
+ "flags=%x", mr, e_mr->flags);
+ ret = -EINVAL;
+ goto rereg_phys_mr_exit0;
+ }
+ if (!phys_buf_array || num_phys_buf <= 0) {
+ ehca_err(mr->device, "bad input values: mr_rereg_mask=%x"
+ " phys_buf_array=%p num_phys_buf=%x",
+ mr_rereg_mask, phys_buf_array, num_phys_buf);
+ ret = -EINVAL;
+ goto rereg_phys_mr_exit0;
+ }
+ }
+ if ((mr_rereg_mask & IB_MR_REREG_ACCESS) && /* change ACL */
+ (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) &&
+ !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) ||
+ ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) &&
+ !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)))) {
+ /*
+ * Remote Write Access requires Local Write Access
+ * Remote Atomic Access requires Local Write Access
+ */
+ ehca_err(mr->device, "bad input values: mr_rereg_mask=%x "
+ "mr_access_flags=%x", mr_rereg_mask, mr_access_flags);
+ ret = -EINVAL;
+ goto rereg_phys_mr_exit0;
+ }
+
+ /* set requested values dependent on rereg request */
+ spin_lock_irqsave(&e_mr->mrlock, sl_flags);
+ new_start = e_mr->start; /* new == old address */
+ new_size = e_mr->size; /* new == old length */
+ new_acl = e_mr->acl; /* new == old access control */
+ new_pd = container_of(mr->pd,struct ehca_pd,ib_pd); /*new == old PD*/
+
+ if (mr_rereg_mask & IB_MR_REREG_TRANS) {
+ new_start = iova_start; /* change address */
+ /* check physical buffer list and calculate size */
+ ret = ehca_mr_chk_buf_and_calc_size(phys_buf_array,
+ num_phys_buf, iova_start,
+ &new_size);
+ if (ret)
+ goto rereg_phys_mr_exit1;
+ if ((new_size == 0) ||
+ (((u64)iova_start + new_size) < (u64)iova_start)) {
+ ehca_err(mr->device, "bad input values: new_size=%lx "
+ "iova_start=%p", new_size, iova_start);
+ ret = -EINVAL;
+ goto rereg_phys_mr_exit1;
+ }
+ num_pages_mr = ((((u64)new_start % PAGE_SIZE) + new_size +
+ PAGE_SIZE - 1) / PAGE_SIZE);
+ num_pages_4k = ((((u64)new_start % EHCA_PAGESIZE) + new_size +
+ EHCA_PAGESIZE - 1) / EHCA_PAGESIZE);
+ pginfo.type = EHCA_MR_PGI_PHYS;
+ pginfo.num_pages = num_pages_mr;
+ pginfo.num_4k = num_pages_4k;
+ pginfo.num_phys_buf = num_phys_buf;
+ pginfo.phys_buf_array = phys_buf_array;
+ pginfo.next_4k = (((u64)iova_start & ~PAGE_MASK) /
+ EHCA_PAGESIZE);
+ }
+ if (mr_rereg_mask & IB_MR_REREG_ACCESS)
+ new_acl = mr_access_flags;
+ if (mr_rereg_mask & IB_MR_REREG_PD)
+ new_pd = container_of(pd, struct ehca_pd, ib_pd);
+
+ ret = ehca_rereg_mr(shca, e_mr, new_start, new_size, new_acl,
+ new_pd, &pginfo, &tmp_lkey, &tmp_rkey);
+ if (ret)
+ goto rereg_phys_mr_exit1;
+
+ /* successful reregistration */
+ if (mr_rereg_mask & IB_MR_REREG_PD)
+ mr->pd = pd;
+ mr->lkey = tmp_lkey;
+ mr->rkey = tmp_rkey;
+
+rereg_phys_mr_exit1:
+ spin_unlock_irqrestore(&e_mr->mrlock, sl_flags);
+rereg_phys_mr_exit0:
+ if (ret)
+ ehca_err(mr->device, "ret=%x mr=%p mr_rereg_mask=%x pd=%p "
+ "phys_buf_array=%p num_phys_buf=%x mr_access_flags=%x "
+ "iova_start=%p",
+ ret, mr, mr_rereg_mask, pd, phys_buf_array,
+ num_phys_buf, mr_access_flags, iova_start);
+ return ret;
+} /* end ehca_rereg_phys_mr() */
+
+/*----------------------------------------------------------------------*/
+
+int ehca_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
+{
+ int ret = 0;
+ u64 h_ret;
+ struct ehca_shca *shca =
+ container_of(mr->device, struct ehca_shca, ib_device);
+ struct ehca_mr *e_mr = container_of(mr, struct ehca_mr, ib.ib_mr);
+ struct ehca_pd *my_pd = container_of(mr->pd, struct ehca_pd, ib_pd);
+ u32 cur_pid = current->tgid;
+ unsigned long sl_flags;
+ struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0};
+
+ if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
+ (my_pd->ownpid != cur_pid)) {
+ ehca_err(mr->device, "Invalid caller pid=%x ownpid=%x",
+ cur_pid, my_pd->ownpid);
+ ret = -EINVAL;
+ goto query_mr_exit0;
+ }
+
+ if ((e_mr->flags & EHCA_MR_FLAG_FMR)) {
+ ehca_err(mr->device, "not supported for FMR, mr=%p e_mr=%p "
+ "e_mr->flags=%x", mr, e_mr, e_mr->flags);
+ ret = -EINVAL;
+ goto query_mr_exit0;
+ }
+
+ memset(mr_attr, 0, sizeof(struct ib_mr_attr));
+ spin_lock_irqsave(&e_mr->mrlock, sl_flags);
+
+ h_ret = hipz_h_query_mr(shca->ipz_hca_handle, e_mr, &hipzout);
+ if (h_ret != H_SUCCESS) {
+ ehca_err(mr->device, "hipz_mr_query failed, h_ret=%lx mr=%p "
+ "hca_hndl=%lx mr_hndl=%lx lkey=%x",
+ h_ret, mr, shca->ipz_hca_handle.handle,
+ e_mr->ipz_mr_handle.handle, mr->lkey);
+ ret = ehca_mrmw_map_hrc_query_mr(h_ret);
+ goto query_mr_exit1;
+ }
+ mr_attr->pd = mr->pd;
+ mr_attr->device_virt_addr = hipzout.vaddr;
+ mr_attr->size = hipzout.len;
+ mr_attr->lkey = hipzout.lkey;
+ mr_attr->rkey = hipzout.rkey;
+ ehca_mrmw_reverse_map_acl(&hipzout.acl, &mr_attr->mr_access_flags);
+
+query_mr_exit1:
+ spin_unlock_irqrestore(&e_mr->mrlock, sl_flags);
+query_mr_exit0:
+ if (ret)
+ ehca_err(mr->device, "ret=%x mr=%p mr_attr=%p",
+ ret, mr, mr_attr);
+ return ret;
+} /* end ehca_query_mr() */
+
+/*----------------------------------------------------------------------*/
+
+int ehca_dereg_mr(struct ib_mr *mr)
+{
+ int ret = 0;
+ u64 h_ret;
+ struct ehca_shca *shca =
+ container_of(mr->device, struct ehca_shca, ib_device);
+ struct ehca_mr *e_mr = container_of(mr, struct ehca_mr, ib.ib_mr);
+ struct ehca_pd *my_pd = container_of(mr->pd, struct ehca_pd, ib_pd);
+ u32 cur_pid = current->tgid;
+
+ if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
+ (my_pd->ownpid != cur_pid)) {
+ ehca_err(mr->device, "Invalid caller pid=%x ownpid=%x",
+ cur_pid, my_pd->ownpid);
+ ret = -EINVAL;
+ goto dereg_mr_exit0;
+ }
+
+ if ((e_mr->flags & EHCA_MR_FLAG_FMR)) {
+ ehca_err(mr->device, "not supported for FMR, mr=%p e_mr=%p "
+ "e_mr->flags=%x", mr, e_mr, e_mr->flags);
+ ret = -EINVAL;
+ goto dereg_mr_exit0;
+ } else if (e_mr == shca->maxmr) {
+ /* should be impossible, however reject to be sure */
+ ehca_err(mr->device, "dereg internal max-MR impossible, mr=%p "
+ "shca->maxmr=%p mr->lkey=%x",
+ mr, shca->maxmr, mr->lkey);
+ ret = -EINVAL;
+ goto dereg_mr_exit0;
+ }
+
+ /* TODO: BUSY: MR still has bound window(s) */
+ h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_mr);
+ if (h_ret != H_SUCCESS) {
+ ehca_err(mr->device, "hipz_free_mr failed, h_ret=%lx shca=%p "
+ "e_mr=%p hca_hndl=%lx mr_hndl=%lx mr->lkey=%x",
+ h_ret, shca, e_mr, shca->ipz_hca_handle.handle,
+ e_mr->ipz_mr_handle.handle, mr->lkey);
+ ret = ehca_mrmw_map_hrc_free_mr(h_ret);
+ goto dereg_mr_exit0;
+ }
+
+ /* successful deregistration */
+ ehca_mr_delete(e_mr);
+
+dereg_mr_exit0:
+ if (ret)
+ ehca_err(mr->device, "ret=%x mr=%p", ret, mr);
+ return ret;
+} /* end ehca_dereg_mr() */
+
+/*----------------------------------------------------------------------*/
+
+struct ib_mw *ehca_alloc_mw(struct ib_pd *pd)
+{
+ struct ib_mw *ib_mw;
+ u64 h_ret;
+ struct ehca_mw *e_mw;
+ struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd);
+ struct ehca_shca *shca =
+ container_of(pd->device, struct ehca_shca, ib_device);
+ struct ehca_mw_hipzout_parms hipzout = {{0},0};
+
+ e_mw = ehca_mw_new();
+ if (!e_mw) {
+ ib_mw = ERR_PTR(-ENOMEM);
+ goto alloc_mw_exit0;
+ }
+
+ h_ret = hipz_h_alloc_resource_mw(shca->ipz_hca_handle, e_mw,
+ e_pd->fw_pd, &hipzout);
+ if (h_ret != H_SUCCESS) {
+ ehca_err(pd->device, "hipz_mw_allocate failed, h_ret=%lx "
+ "shca=%p hca_hndl=%lx mw=%p",
+ h_ret, shca, shca->ipz_hca_handle.handle, e_mw);
+ ib_mw = ERR_PTR(ehca_mrmw_map_hrc_alloc(h_ret));
+ goto alloc_mw_exit1;
+ }
+ /* successful MW allocation */
+ e_mw->ipz_mw_handle = hipzout.handle;
+ e_mw->ib_mw.rkey = hipzout.rkey;
+ return &e_mw->ib_mw;
+
+alloc_mw_exit1:
+ ehca_mw_delete(e_mw);
+alloc_mw_exit0:
+ if (IS_ERR(ib_mw))
+ ehca_err(pd->device, "rc=%lx pd=%p", PTR_ERR(ib_mw), pd);
+ return ib_mw;
+} /* end ehca_alloc_mw() */
+
+/*----------------------------------------------------------------------*/
+
+int ehca_bind_mw(struct ib_qp *qp,
+ struct ib_mw *mw,
+ struct ib_mw_bind *mw_bind)
+{
+ /* TODO: not supported up to now */
+ ehca_gen_err("bind MW currently not supported by HCAD");
+
+ return -EPERM;
+} /* end ehca_bind_mw() */
+
+/*----------------------------------------------------------------------*/
+
+int ehca_dealloc_mw(struct ib_mw *mw)
+{
+ u64 h_ret;
+ struct ehca_shca *shca =
+ container_of(mw->device, struct ehca_shca, ib_device);
+ struct ehca_mw *e_mw = container_of(mw, struct ehca_mw, ib_mw);
+
+ h_ret = hipz_h_free_resource_mw(shca->ipz_hca_handle, e_mw);
+ if (h_ret != H_SUCCESS) {
+ ehca_err(mw->device, "hipz_free_mw failed, h_ret=%lx shca=%p "
+ "mw=%p rkey=%x hca_hndl=%lx mw_hndl=%lx",
+ h_ret, shca, mw, mw->rkey, shca->ipz_hca_handle.handle,
+ e_mw->ipz_mw_handle.handle);
+ return ehca_mrmw_map_hrc_free_mw(h_ret);
+ }
+ /* successful deallocation */
+ ehca_mw_delete(e_mw);
+ return 0;
+} /* end ehca_dealloc_mw() */
+
+/*----------------------------------------------------------------------*/
+
+struct ib_fmr *ehca_alloc_fmr(struct ib_pd *pd,
+ int mr_access_flags,
+ struct ib_fmr_attr *fmr_attr)
+{
+ struct ib_fmr *ib_fmr;
+ struct ehca_shca *shca =
+ container_of(pd->device, struct ehca_shca, ib_device);
+ struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd);
+ struct ehca_mr *e_fmr;
+ int ret;
+ u32 tmp_lkey, tmp_rkey;
+ struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0};
+
+ /* check other parameters */
+ if (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) &&
+ !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) ||
+ ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) &&
+ !(mr_access_flags & IB_ACCESS_LOCAL_WRITE))) {
+ /*
+ * Remote Write Access requires Local Write Access
+ * Remote Atomic Access requires Local Write Access
+ */
+ ehca_err(pd->device, "bad input values: mr_access_flags=%x",
+ mr_access_flags);
+ ib_fmr = ERR_PTR(-EINVAL);
+ goto alloc_fmr_exit0;
+ }
+ if (mr_access_flags & IB_ACCESS_MW_BIND) {
+ ehca_err(pd->device, "bad input values: mr_access_flags=%x",
+ mr_access_flags);
+ ib_fmr = ERR_PTR(-EINVAL);
+ goto alloc_fmr_exit0;
+ }
+ if ((fmr_attr->max_pages == 0) || (fmr_attr->max_maps == 0)) {
+ ehca_err(pd->device, "bad input values: fmr_attr->max_pages=%x "
+ "fmr_attr->max_maps=%x fmr_attr->page_shift=%x",
+ fmr_attr->max_pages, fmr_attr->max_maps,
+ fmr_attr->page_shift);
+ ib_fmr = ERR_PTR(-EINVAL);
+ goto alloc_fmr_exit0;
+ }
+ if (((1 << fmr_attr->page_shift) != EHCA_PAGESIZE) &&
+ ((1 << fmr_attr->page_shift) != PAGE_SIZE)) {
+ ehca_err(pd->device, "unsupported fmr_attr->page_shift=%x",
+ fmr_attr->page_shift);
+ ib_fmr = ERR_PTR(-EINVAL);
+ goto alloc_fmr_exit0;
+ }
+
+ e_fmr = ehca_mr_new();
+ if (!e_fmr) {
+ ib_fmr = ERR_PTR(-ENOMEM);
+ goto alloc_fmr_exit0;
+ }
+ e_fmr->flags |= EHCA_MR_FLAG_FMR;
+
+ /* register MR on HCA */
+ ret = ehca_reg_mr(shca, e_fmr, NULL,
+ fmr_attr->max_pages * (1 << fmr_attr->page_shift),
+ mr_access_flags, e_pd, &pginfo,
+ &tmp_lkey, &tmp_rkey);
+ if (ret) {
+ ib_fmr = ERR_PTR(ret);
+ goto alloc_fmr_exit1;
+ }
+
+ /* successful */
+ e_fmr->fmr_page_size = 1 << fmr_attr->page_shift;
+ e_fmr->fmr_max_pages = fmr_attr->max_pages;
+ e_fmr->fmr_max_maps = fmr_attr->max_maps;
+ e_fmr->fmr_map_cnt = 0;
+ return &e_fmr->ib.ib_fmr;
+
+alloc_fmr_exit1:
+ ehca_mr_delete(e_fmr);
+alloc_fmr_exit0:
+ if (IS_ERR(ib_fmr))
+ ehca_err(pd->device, "rc=%lx pd=%p mr_access_flags=%x "
+ "fmr_attr=%p", PTR_ERR(ib_fmr), pd,
+ mr_access_flags, fmr_attr);
+ return ib_fmr;
+} /* end ehca_alloc_fmr() */
+
+/*----------------------------------------------------------------------*/
+
+int ehca_map_phys_fmr(struct ib_fmr *fmr,
+ u64 *page_list,
+ int list_len,
+ u64 iova)
+{
+ int ret;
+ struct ehca_shca *shca =
+ container_of(fmr->device, struct ehca_shca, ib_device);
+ struct ehca_mr *e_fmr = container_of(fmr, struct ehca_mr, ib.ib_fmr);
+ struct ehca_pd *e_pd = container_of(fmr->pd, struct ehca_pd, ib_pd);
+ struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0};
+ u32 tmp_lkey, tmp_rkey;
+
+ if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) {
+ ehca_err(fmr->device, "not a FMR, e_fmr=%p e_fmr->flags=%x",
+ e_fmr, e_fmr->flags);
+ ret = -EINVAL;
+ goto map_phys_fmr_exit0;
+ }
+ ret = ehca_fmr_check_page_list(e_fmr, page_list, list_len);
+ if (ret)
+ goto map_phys_fmr_exit0;
+ if (iova % e_fmr->fmr_page_size) {
+ /* only whole-numbered pages */
+ ehca_err(fmr->device, "bad iova, iova=%lx fmr_page_size=%x",
+ iova, e_fmr->fmr_page_size);
+ ret = -EINVAL;
+ goto map_phys_fmr_exit0;
+ }
+ if (e_fmr->fmr_map_cnt >= e_fmr->fmr_max_maps) {
+ /* HCAD does not limit the maps, however trace this anyway */
+ ehca_info(fmr->device, "map limit exceeded, fmr=%p "
+ "e_fmr->fmr_map_cnt=%x e_fmr->fmr_max_maps=%x",
+ fmr, e_fmr->fmr_map_cnt, e_fmr->fmr_max_maps);
+ }
+
+ pginfo.type = EHCA_MR_PGI_FMR;
+ pginfo.num_pages = list_len;
+ pginfo.num_4k = list_len * (e_fmr->fmr_page_size / EHCA_PAGESIZE);
+ pginfo.page_list = page_list;
+ pginfo.next_4k = ((iova & (e_fmr->fmr_page_size-1)) /
+ EHCA_PAGESIZE);
+
+ ret = ehca_rereg_mr(shca, e_fmr, (u64*)iova,
+ list_len * e_fmr->fmr_page_size,
+ e_fmr->acl, e_pd, &pginfo, &tmp_lkey, &tmp_rkey);
+ if (ret)
+ goto map_phys_fmr_exit0;
+
+ /* successful reregistration */
+ e_fmr->fmr_map_cnt++;
+ e_fmr->ib.ib_fmr.lkey = tmp_lkey;
+ e_fmr->ib.ib_fmr.rkey = tmp_rkey;
+ return 0;
+
+map_phys_fmr_exit0:
+ if (ret)
+ ehca_err(fmr->device, "ret=%x fmr=%p page_list=%p list_len=%x "
+ "iova=%lx",
+ ret, fmr, page_list, list_len, iova);
+ return ret;
+} /* end ehca_map_phys_fmr() */
+
+/*----------------------------------------------------------------------*/
+
+int ehca_unmap_fmr(struct list_head *fmr_list)
+{
+ int ret = 0;
+ struct ib_fmr *ib_fmr;
+ struct ehca_shca *shca = NULL;
+ struct ehca_shca *prev_shca;
+ struct ehca_mr *e_fmr;
+ u32 num_fmr = 0;
+ u32 unmap_fmr_cnt = 0;
+
+ /* check all FMR belong to same SHCA, and check internal flag */
+ list_for_each_entry(ib_fmr, fmr_list, list) {
+ prev_shca = shca;
+ if (!ib_fmr) {
+ ehca_gen_err("bad fmr=%p in list", ib_fmr);
+ ret = -EINVAL;
+ goto unmap_fmr_exit0;
+ }
+ shca = container_of(ib_fmr->device, struct ehca_shca,
+ ib_device);
+ e_fmr = container_of(ib_fmr, struct ehca_mr, ib.ib_fmr);
+ if ((shca != prev_shca) && prev_shca) {
+ ehca_err(&shca->ib_device, "SHCA mismatch, shca=%p "
+ "prev_shca=%p e_fmr=%p",
+ shca, prev_shca, e_fmr);
+ ret = -EINVAL;
+ goto unmap_fmr_exit0;
+ }
+ if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) {
+ ehca_err(&shca->ib_device, "not a FMR, e_fmr=%p "
+ "e_fmr->flags=%x", e_fmr, e_fmr->flags);
+ ret = -EINVAL;
+ goto unmap_fmr_exit0;
+ }
+ num_fmr++;
+ }
+
+ /* loop over all FMRs to unmap */
+ list_for_each_entry(ib_fmr, fmr_list, list) {
+ unmap_fmr_cnt++;
+ e_fmr = container_of(ib_fmr, struct ehca_mr, ib.ib_fmr);
+ shca = container_of(ib_fmr->device, struct ehca_shca,
+ ib_device);
+ ret = ehca_unmap_one_fmr(shca, e_fmr);
+ if (ret) {
+ /* unmap failed, stop unmapping of rest of FMRs */
+ ehca_err(&shca->ib_device, "unmap of one FMR failed, "
+ "stop rest, e_fmr=%p num_fmr=%x "
+ "unmap_fmr_cnt=%x lkey=%x", e_fmr, num_fmr,
+ unmap_fmr_cnt, e_fmr->ib.ib_fmr.lkey);
+ goto unmap_fmr_exit0;
+ }
+ }
+
+unmap_fmr_exit0:
+ if (ret)
+ ehca_gen_err("ret=%x fmr_list=%p num_fmr=%x unmap_fmr_cnt=%x",
+ ret, fmr_list, num_fmr, unmap_fmr_cnt);
+ return ret;
+} /* end ehca_unmap_fmr() */
+
+/*----------------------------------------------------------------------*/
+
+int ehca_dealloc_fmr(struct ib_fmr *fmr)
+{
+ int ret;
+ u64 h_ret;
+ struct ehca_shca *shca =
+ container_of(fmr->device, struct ehca_shca, ib_device);
+ struct ehca_mr *e_fmr = container_of(fmr, struct ehca_mr, ib.ib_fmr);
+
+ if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) {
+ ehca_err(fmr->device, "not a FMR, e_fmr=%p e_fmr->flags=%x",
+ e_fmr, e_fmr->flags);
+ ret = -EINVAL;
+ goto free_fmr_exit0;
+ }
+
+ h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_fmr);
+ if (h_ret != H_SUCCESS) {
+ ehca_err(fmr->device, "hipz_free_mr failed, h_ret=%lx e_fmr=%p "
+ "hca_hndl=%lx fmr_hndl=%lx fmr->lkey=%x",
+ h_ret, e_fmr, shca->ipz_hca_handle.handle,
+ e_fmr->ipz_mr_handle.handle, fmr->lkey);
+ ret = ehca_mrmw_map_hrc_free_mr(h_ret);
+ goto free_fmr_exit0;
+ }
+ /* successful deregistration */
+ ehca_mr_delete(e_fmr);
+ return 0;
+
+free_fmr_exit0:
+ if (ret)
+ ehca_err(&shca->ib_device, "ret=%x fmr=%p", ret, fmr);
+ return ret;
+} /* end ehca_dealloc_fmr() */
+
+/*----------------------------------------------------------------------*/
+
+int ehca_reg_mr(struct ehca_shca *shca,
+ struct ehca_mr *e_mr,
+ u64 *iova_start,
+ u64 size,
+ int acl,
+ struct ehca_pd *e_pd,
+ struct ehca_mr_pginfo *pginfo,
+ u32 *lkey, /*OUT*/
+ u32 *rkey) /*OUT*/
+{
+ int ret;
+ u64 h_ret;
+ u32 hipz_acl;
+ struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0};
+
+ ehca_mrmw_map_acl(acl, &hipz_acl);
+ ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl);
+ if (ehca_use_hp_mr == 1)
+ hipz_acl |= 0x00000001;
+
+ h_ret = hipz_h_alloc_resource_mr(shca->ipz_hca_handle, e_mr,
+ (u64)iova_start, size, hipz_acl,
+ e_pd->fw_pd, &hipzout);
+ if (h_ret != H_SUCCESS) {
+ ehca_err(&shca->ib_device, "hipz_alloc_mr failed, h_ret=%lx "
+ "hca_hndl=%lx", h_ret, shca->ipz_hca_handle.handle);
+ ret = ehca_mrmw_map_hrc_alloc(h_ret);
+ goto ehca_reg_mr_exit0;
+ }
+
+ e_mr->ipz_mr_handle = hipzout.handle;
+
+ ret = ehca_reg_mr_rpages(shca, e_mr, pginfo);
+ if (ret)
+ goto ehca_reg_mr_exit1;
+
+ /* successful registration */
+ e_mr->num_pages = pginfo->num_pages;
+ e_mr->num_4k = pginfo->num_4k;
+ e_mr->start = iova_start;
+ e_mr->size = size;
+ e_mr->acl = acl;
+ *lkey = hipzout.lkey;
+ *rkey = hipzout.rkey;
+ return 0;
+
+ehca_reg_mr_exit1:
+ h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_mr);
+ if (h_ret != H_SUCCESS) {
+ ehca_err(&shca->ib_device, "h_ret=%lx shca=%p e_mr=%p "
+ "iova_start=%p size=%lx acl=%x e_pd=%p lkey=%x "
+ "pginfo=%p num_pages=%lx num_4k=%lx ret=%x",
+ h_ret, shca, e_mr, iova_start, size, acl, e_pd,
+ hipzout.lkey, pginfo, pginfo->num_pages,
+ pginfo->num_4k, ret);
+ ehca_err(&shca->ib_device, "internal error in ehca_reg_mr, "
+ "not recoverable");
+ }
+ehca_reg_mr_exit0:
+ if (ret)
+ ehca_err(&shca->ib_device, "ret=%x shca=%p e_mr=%p "
+ "iova_start=%p size=%lx acl=%x e_pd=%p pginfo=%p "
+ "num_pages=%lx num_4k=%lx",
+ ret, shca, e_mr, iova_start, size, acl, e_pd, pginfo,
+ pginfo->num_pages, pginfo->num_4k);
+ return ret;
+} /* end ehca_reg_mr() */
+
+/*----------------------------------------------------------------------*/
+
+int ehca_reg_mr_rpages(struct ehca_shca *shca,
+ struct ehca_mr *e_mr,
+ struct ehca_mr_pginfo *pginfo)
+{
+ int ret = 0;
+ u64 h_ret;
+ u32 rnum;
+ u64 rpage;
+ u32 i;
+ u64 *kpage;
+
+ kpage = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+ if (!kpage) {
+ ehca_err(&shca->ib_device, "kpage alloc failed");
+ ret = -ENOMEM;
+ goto ehca_reg_mr_rpages_exit0;
+ }
+
+ /* max 512 pages per shot */
+ for (i = 0; i < ((pginfo->num_4k + 512 - 1) / 512); i++) {
+
+ if (i == ((pginfo->num_4k + 512 - 1) / 512) - 1) {
+ rnum = pginfo->num_4k % 512; /* last shot */
+ if (rnum == 0)
+ rnum = 512; /* last shot is full */
+ } else
+ rnum = 512;
+
+ if (rnum > 1) {
+ ret = ehca_set_pagebuf(e_mr, pginfo, rnum, kpage);
+ if (ret) {
+ ehca_err(&shca->ib_device, "ehca_set_pagebuf "
+ "bad rc, ret=%x rnum=%x kpage=%p",
+ ret, rnum, kpage);
+ ret = -EFAULT;
+ goto ehca_reg_mr_rpages_exit1;
+ }
+ rpage = virt_to_abs(kpage);
+ if (!rpage) {
+ ehca_err(&shca->ib_device, "kpage=%p i=%x",
+ kpage, i);
+ ret = -EFAULT;
+ goto ehca_reg_mr_rpages_exit1;
+ }
+ } else { /* rnum==1 */
+ ret = ehca_set_pagebuf_1(e_mr, pginfo, &rpage);
+ if (ret) {
+ ehca_err(&shca->ib_device, "ehca_set_pagebuf_1 "
+ "bad rc, ret=%x i=%x", ret, i);
+ ret = -EFAULT;
+ goto ehca_reg_mr_rpages_exit1;
+ }
+ }
+
+ h_ret = hipz_h_register_rpage_mr(shca->ipz_hca_handle, e_mr,
+ 0, /* pagesize 4k */
+ 0, rpage, rnum);
+
+ if (i == ((pginfo->num_4k + 512 - 1) / 512) - 1) {
+ /*
+ * check for 'registration complete'==H_SUCCESS
+ * and for 'page registered'==H_PAGE_REGISTERED
+ */
+ if (h_ret != H_SUCCESS) {
+ ehca_err(&shca->ib_device, "last "
+ "hipz_reg_rpage_mr failed, h_ret=%lx "
+ "e_mr=%p i=%x hca_hndl=%lx mr_hndl=%lx"
+ " lkey=%x", h_ret, e_mr, i,
+ shca->ipz_hca_handle.handle,
+ e_mr->ipz_mr_handle.handle,
+ e_mr->ib.ib_mr.lkey);
+ ret = ehca_mrmw_map_hrc_rrpg_last(h_ret);
+ break;
+ } else
+ ret = 0;
+ } else if (h_ret != H_PAGE_REGISTERED) {
+ ehca_err(&shca->ib_device, "hipz_reg_rpage_mr failed, "
+ "h_ret=%lx e_mr=%p i=%x lkey=%x hca_hndl=%lx "
+ "mr_hndl=%lx", h_ret, e_mr, i,
+ e_mr->ib.ib_mr.lkey,
+ shca->ipz_hca_handle.handle,
+ e_mr->ipz_mr_handle.handle);
+ ret = ehca_mrmw_map_hrc_rrpg_notlast(h_ret);
+ break;
+ } else
+ ret = 0;
+ } /* end for(i) */
+
+
+ehca_reg_mr_rpages_exit1:
+ kfree(kpage);
+ehca_reg_mr_rpages_exit0:
+ if (ret)
+ ehca_err(&shca->ib_device, "ret=%x shca=%p e_mr=%p pginfo=%p "
+ "num_pages=%lx num_4k=%lx", ret, shca, e_mr, pginfo,
+ pginfo->num_pages, pginfo->num_4k);
+ return ret;
+} /* end ehca_reg_mr_rpages() */
+
+/*----------------------------------------------------------------------*/
+
+inline int ehca_rereg_mr_rereg1(struct ehca_shca *shca,
+ struct ehca_mr *e_mr,
+ u64 *iova_start,
+ u64 size,
+ u32 acl,
+ struct ehca_pd *e_pd,
+ struct ehca_mr_pginfo *pginfo,
+ u32 *lkey, /*OUT*/
+ u32 *rkey) /*OUT*/
+{
+ int ret;
+ u64 h_ret;
+ u32 hipz_acl;
+ u64 *kpage;
+ u64 rpage;
+ struct ehca_mr_pginfo pginfo_save;
+ struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0};
+
+ ehca_mrmw_map_acl(acl, &hipz_acl);
+ ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl);
+
+ kpage = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+ if (!kpage) {
+ ehca_err(&shca->ib_device, "kpage alloc failed");
+ ret = -ENOMEM;
+ goto ehca_rereg_mr_rereg1_exit0;
+ }
+
+ pginfo_save = *pginfo;
+ ret = ehca_set_pagebuf(e_mr, pginfo, pginfo->num_4k, kpage);
+ if (ret) {
+ ehca_err(&shca->ib_device, "set pagebuf failed, e_mr=%p "
+ "pginfo=%p type=%x num_pages=%lx num_4k=%lx kpage=%p",
+ e_mr, pginfo, pginfo->type, pginfo->num_pages,
+ pginfo->num_4k,kpage);
+ goto ehca_rereg_mr_rereg1_exit1;
+ }
+ rpage = virt_to_abs(kpage);
+ if (!rpage) {
+ ehca_err(&shca->ib_device, "kpage=%p", kpage);
+ ret = -EFAULT;
+ goto ehca_rereg_mr_rereg1_exit1;
+ }
+ h_ret = hipz_h_reregister_pmr(shca->ipz_hca_handle, e_mr,
+ (u64)iova_start, size, hipz_acl,
+ e_pd->fw_pd, rpage, &hipzout);
+ if (h_ret != H_SUCCESS) {
+ /*
+ * reregistration unsuccessful, try it again with the 3 hCalls,
+ * e.g. this is required in case H_MR_CONDITION
+ * (MW bound or MR is shared)
+ */
+ ehca_warn(&shca->ib_device, "hipz_h_reregister_pmr failed "
+ "(Rereg1), h_ret=%lx e_mr=%p", h_ret, e_mr);
+ *pginfo = pginfo_save;
+ ret = -EAGAIN;
+ } else if ((u64*)hipzout.vaddr != iova_start) {
+ ehca_err(&shca->ib_device, "PHYP changed iova_start in "
+ "rereg_pmr, iova_start=%p iova_start_out=%lx e_mr=%p "
+ "mr_handle=%lx lkey=%x lkey_out=%x", iova_start,
+ hipzout.vaddr, e_mr, e_mr->ipz_mr_handle.handle,
+ e_mr->ib.ib_mr.lkey, hipzout.lkey);
+ ret = -EFAULT;
+ } else {
+ /*
+ * successful reregistration
+ * note: start and start_out are identical for eServer HCAs
+ */
+ e_mr->num_pages = pginfo->num_pages;
+ e_mr->num_4k = pginfo->num_4k;
+ e_mr->start = iova_start;
+ e_mr->size = size;
+ e_mr->acl = acl;
+ *lkey = hipzout.lkey;
+ *rkey = hipzout.rkey;
+ }
+
+ehca_rereg_mr_rereg1_exit1:
+ kfree(kpage);
+ehca_rereg_mr_rereg1_exit0:
+ if ( ret && (ret != -EAGAIN) )
+ ehca_err(&shca->ib_device, "ret=%x lkey=%x rkey=%x "
+ "pginfo=%p num_pages=%lx num_4k=%lx",
+ ret, *lkey, *rkey, pginfo, pginfo->num_pages,
+ pginfo->num_4k);
+ return ret;
+} /* end ehca_rereg_mr_rereg1() */
+
+/*----------------------------------------------------------------------*/
+
+int ehca_rereg_mr(struct ehca_shca *shca,
+ struct ehca_mr *e_mr,
+ u64 *iova_start,
+ u64 size,
+ int acl,
+ struct ehca_pd *e_pd,
+ struct ehca_mr_pginfo *pginfo,
+ u32 *lkey,
+ u32 *rkey)
+{
+ int ret = 0;
+ u64 h_ret;
+ int rereg_1_hcall = 1; /* 1: use hipz_h_reregister_pmr directly */
+ int rereg_3_hcall = 0; /* 1: use 3 hipz calls for reregistration */
+
+ /* first determine reregistration hCall(s) */
+ if ((pginfo->num_4k > 512) || (e_mr->num_4k > 512) ||
+ (pginfo->num_4k > e_mr->num_4k)) {
+ ehca_dbg(&shca->ib_device, "Rereg3 case, pginfo->num_4k=%lx "
+ "e_mr->num_4k=%x", pginfo->num_4k, e_mr->num_4k);
+ rereg_1_hcall = 0;
+ rereg_3_hcall = 1;
+ }
+
+ if (e_mr->flags & EHCA_MR_FLAG_MAXMR) { /* check for max-MR */
+ rereg_1_hcall = 0;
+ rereg_3_hcall = 1;
+ e_mr->flags &= ~EHCA_MR_FLAG_MAXMR;
+ ehca_err(&shca->ib_device, "Rereg MR for max-MR! e_mr=%p",
+ e_mr);
+ }
+
+ if (rereg_1_hcall) {
+ ret = ehca_rereg_mr_rereg1(shca, e_mr, iova_start, size,
+ acl, e_pd, pginfo, lkey, rkey);
+ if (ret) {
+ if (ret == -EAGAIN)
+ rereg_3_hcall = 1;
+ else
+ goto ehca_rereg_mr_exit0;
+ }
+ }
+
+ if (rereg_3_hcall) {
+ struct ehca_mr save_mr;
+
+ /* first deregister old MR */
+ h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_mr);
+ if (h_ret != H_SUCCESS) {
+ ehca_err(&shca->ib_device, "hipz_free_mr failed, "
+ "h_ret=%lx e_mr=%p hca_hndl=%lx mr_hndl=%lx "
+ "mr->lkey=%x",
+ h_ret, e_mr, shca->ipz_hca_handle.handle,
+ e_mr->ipz_mr_handle.handle,
+ e_mr->ib.ib_mr.lkey);
+ ret = ehca_mrmw_map_hrc_free_mr(h_ret);
+ goto ehca_rereg_mr_exit0;
+ }
+ /* clean ehca_mr_t, without changing struct ib_mr and lock */
+ save_mr = *e_mr;
+ ehca_mr_deletenew(e_mr);
+
+ /* set some MR values */
+ e_mr->flags = save_mr.flags;
+ e_mr->fmr_page_size = save_mr.fmr_page_size;
+ e_mr->fmr_max_pages = save_mr.fmr_max_pages;
+ e_mr->fmr_max_maps = save_mr.fmr_max_maps;
+ e_mr->fmr_map_cnt = save_mr.fmr_map_cnt;
+
+ ret = ehca_reg_mr(shca, e_mr, iova_start, size, acl,
+ e_pd, pginfo, lkey, rkey);
+ if (ret) {
+ u32 offset = (u64)(&e_mr->flags) - (u64)e_mr;
+ memcpy(&e_mr->flags, &(save_mr.flags),
+ sizeof(struct ehca_mr) - offset);
+ goto ehca_rereg_mr_exit0;
+ }
+ }
+
+ehca_rereg_mr_exit0:
+ if (ret)
+ ehca_err(&shca->ib_device, "ret=%x shca=%p e_mr=%p "
+ "iova_start=%p size=%lx acl=%x e_pd=%p pginfo=%p "
+ "num_pages=%lx lkey=%x rkey=%x rereg_1_hcall=%x "
+ "rereg_3_hcall=%x", ret, shca, e_mr, iova_start, size,
+ acl, e_pd, pginfo, pginfo->num_pages, *lkey, *rkey,
+ rereg_1_hcall, rereg_3_hcall);
+ return ret;
+} /* end ehca_rereg_mr() */
+
+/*----------------------------------------------------------------------*/
+
+int ehca_unmap_one_fmr(struct ehca_shca *shca,
+ struct ehca_mr *e_fmr)
+{
+ int ret = 0;
+ u64 h_ret;
+ int rereg_1_hcall = 1; /* 1: use hipz_mr_reregister directly */
+ int rereg_3_hcall = 0; /* 1: use 3 hipz calls for unmapping */
+ struct ehca_pd *e_pd =
+ container_of(e_fmr->ib.ib_fmr.pd, struct ehca_pd, ib_pd);
+ struct ehca_mr save_fmr;
+ u32 tmp_lkey, tmp_rkey;
+ struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0};
+ struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0};
+
+ /* first check if reregistration hCall can be used for unmap */
+ if (e_fmr->fmr_max_pages > 512) {
+ rereg_1_hcall = 0;
+ rereg_3_hcall = 1;
+ }
+
+ if (rereg_1_hcall) {
+ /*
+ * note: after using rereg hcall with len=0,
+ * rereg hcall must be used again for registering pages
+ */
+ h_ret = hipz_h_reregister_pmr(shca->ipz_hca_handle, e_fmr, 0,
+ 0, 0, e_pd->fw_pd, 0, &hipzout);
+ if (h_ret != H_SUCCESS) {
+ /*
+ * should not happen, because length checked above,
+ * FMRs are not shared and no MW bound to FMRs
+ */
+ ehca_err(&shca->ib_device, "hipz_reregister_pmr failed "
+ "(Rereg1), h_ret=%lx e_fmr=%p hca_hndl=%lx "
+ "mr_hndl=%lx lkey=%x lkey_out=%x",
+ h_ret, e_fmr, shca->ipz_hca_handle.handle,
+ e_fmr->ipz_mr_handle.handle,
+ e_fmr->ib.ib_fmr.lkey, hipzout.lkey);
+ rereg_3_hcall = 1;
+ } else {
+ /* successful reregistration */
+ e_fmr->start = NULL;
+ e_fmr->size = 0;
+ tmp_lkey = hipzout.lkey;
+ tmp_rkey = hipzout.rkey;
+ }
+ }
+
+ if (rereg_3_hcall) {
+ struct ehca_mr save_mr;
+
+ /* first free old FMR */
+ h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_fmr);
+ if (h_ret != H_SUCCESS) {
+ ehca_err(&shca->ib_device, "hipz_free_mr failed, "
+ "h_ret=%lx e_fmr=%p hca_hndl=%lx mr_hndl=%lx "
+ "lkey=%x",
+ h_ret, e_fmr, shca->ipz_hca_handle.handle,
+ e_fmr->ipz_mr_handle.handle,
+ e_fmr->ib.ib_fmr.lkey);
+ ret = ehca_mrmw_map_hrc_free_mr(h_ret);
+ goto ehca_unmap_one_fmr_exit0;
+ }
+ /* clean ehca_mr_t, without changing lock */
+ save_fmr = *e_fmr;
+ ehca_mr_deletenew(e_fmr);
+
+ /* set some MR values */
+ e_fmr->flags = save_fmr.flags;
+ e_fmr->fmr_page_size = save_fmr.fmr_page_size;
+ e_fmr->fmr_max_pages = save_fmr.fmr_max_pages;
+ e_fmr->fmr_max_maps = save_fmr.fmr_max_maps;
+ e_fmr->fmr_map_cnt = save_fmr.fmr_map_cnt;
+ e_fmr->acl = save_fmr.acl;
+
+ pginfo.type = EHCA_MR_PGI_FMR;
+ pginfo.num_pages = 0;
+ pginfo.num_4k = 0;
+ ret = ehca_reg_mr(shca, e_fmr, NULL,
+ (e_fmr->fmr_max_pages * e_fmr->fmr_page_size),
+ e_fmr->acl, e_pd, &pginfo, &tmp_lkey,
+ &tmp_rkey);
+ if (ret) {
+ u32 offset = (u64)(&e_fmr->flags) - (u64)e_fmr;
+ memcpy(&e_fmr->flags, &(save_mr.flags),
+ sizeof(struct ehca_mr) - offset);
+ goto ehca_unmap_one_fmr_exit0;
+ }
+ }
+
+ehca_unmap_one_fmr_exit0:
+ if (ret)
+ ehca_err(&shca->ib_device, "ret=%x tmp_lkey=%x tmp_rkey=%x "
+ "fmr_max_pages=%x rereg_1_hcall=%x rereg_3_hcall=%x",
+ ret, tmp_lkey, tmp_rkey, e_fmr->fmr_max_pages,
+ rereg_1_hcall, rereg_3_hcall);
+ return ret;
+} /* end ehca_unmap_one_fmr() */
+
+/*----------------------------------------------------------------------*/
+
+int ehca_reg_smr(struct ehca_shca *shca,
+ struct ehca_mr *e_origmr,
+ struct ehca_mr *e_newmr,
+ u64 *iova_start,
+ int acl,
+ struct ehca_pd *e_pd,
+ u32 *lkey, /*OUT*/
+ u32 *rkey) /*OUT*/
+{
+ int ret = 0;
+ u64 h_ret;
+ u32 hipz_acl;
+ struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0};
+
+ ehca_mrmw_map_acl(acl, &hipz_acl);
+ ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl);
+
+ h_ret = hipz_h_register_smr(shca->ipz_hca_handle, e_newmr, e_origmr,
+ (u64)iova_start, hipz_acl, e_pd->fw_pd,
+ &hipzout);
+ if (h_ret != H_SUCCESS) {
+ ehca_err(&shca->ib_device, "hipz_reg_smr failed, h_ret=%lx "
+ "shca=%p e_origmr=%p e_newmr=%p iova_start=%p acl=%x "
+ "e_pd=%p hca_hndl=%lx mr_hndl=%lx lkey=%x",
+ h_ret, shca, e_origmr, e_newmr, iova_start, acl, e_pd,
+ shca->ipz_hca_handle.handle,
+ e_origmr->ipz_mr_handle.handle,
+ e_origmr->ib.ib_mr.lkey);
+ ret = ehca_mrmw_map_hrc_reg_smr(h_ret);
+ goto ehca_reg_smr_exit0;
+ }
+ /* successful registration */
+ e_newmr->num_pages = e_origmr->num_pages;
+ e_newmr->num_4k = e_origmr->num_4k;
+ e_newmr->start = iova_start;
+ e_newmr->size = e_origmr->size;
+ e_newmr->acl = acl;
+ e_newmr->ipz_mr_handle = hipzout.handle;
+ *lkey = hipzout.lkey;
+ *rkey = hipzout.rkey;
+ return 0;
+
+ehca_reg_smr_exit0:
+ if (ret)
+ ehca_err(&shca->ib_device, "ret=%x shca=%p e_origmr=%p "
+ "e_newmr=%p iova_start=%p acl=%x e_pd=%p",
+ ret, shca, e_origmr, e_newmr, iova_start, acl, e_pd);
+ return ret;
+} /* end ehca_reg_smr() */
+
+/*----------------------------------------------------------------------*/
+
+/* register internal max-MR to internal SHCA */
+int ehca_reg_internal_maxmr(
+ struct ehca_shca *shca,
+ struct ehca_pd *e_pd,
+ struct ehca_mr **e_maxmr) /*OUT*/
+{
+ int ret;
+ struct ehca_mr *e_mr;
+ u64 *iova_start;
+ u64 size_maxmr;
+ struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0};
+ struct ib_phys_buf ib_pbuf;
+ u32 num_pages_mr;
+ u32 num_pages_4k; /* 4k portion "pages" */
+
+ e_mr = ehca_mr_new();
+ if (!e_mr) {
+ ehca_err(&shca->ib_device, "out of memory");
+ ret = -ENOMEM;
+ goto ehca_reg_internal_maxmr_exit0;
+ }
+ e_mr->flags |= EHCA_MR_FLAG_MAXMR;
+
+ /* register internal max-MR on HCA */
+ size_maxmr = (u64)high_memory - PAGE_OFFSET;
+ iova_start = (u64*)KERNELBASE;
+ ib_pbuf.addr = 0;
+ ib_pbuf.size = size_maxmr;
+ num_pages_mr = ((((u64)iova_start % PAGE_SIZE) + size_maxmr +
+ PAGE_SIZE - 1) / PAGE_SIZE);
+ num_pages_4k = ((((u64)iova_start % EHCA_PAGESIZE) + size_maxmr +
+ EHCA_PAGESIZE - 1) / EHCA_PAGESIZE);
+
+ pginfo.type = EHCA_MR_PGI_PHYS;
+ pginfo.num_pages = num_pages_mr;
+ pginfo.num_4k = num_pages_4k;
+ pginfo.num_phys_buf = 1;
+ pginfo.phys_buf_array = &ib_pbuf;
+
+ ret = ehca_reg_mr(shca, e_mr, iova_start, size_maxmr, 0, e_pd,
+ &pginfo, &e_mr->ib.ib_mr.lkey,
+ &e_mr->ib.ib_mr.rkey);
+ if (ret) {
+ ehca_err(&shca->ib_device, "reg of internal max MR failed, "
+ "e_mr=%p iova_start=%p size_maxmr=%lx num_pages_mr=%x "
+ "num_pages_4k=%x", e_mr, iova_start, size_maxmr,
+ num_pages_mr, num_pages_4k);
+ goto ehca_reg_internal_maxmr_exit1;
+ }
+
+ /* successful registration of all pages */
+ e_mr->ib.ib_mr.device = e_pd->ib_pd.device;
+ e_mr->ib.ib_mr.pd = &e_pd->ib_pd;
+ e_mr->ib.ib_mr.uobject = NULL;
+ atomic_inc(&(e_pd->ib_pd.usecnt));
+ atomic_set(&(e_mr->ib.ib_mr.usecnt), 0);
+ *e_maxmr = e_mr;
+ return 0;
+
+ehca_reg_internal_maxmr_exit1:
+ ehca_mr_delete(e_mr);
+ehca_reg_internal_maxmr_exit0:
+ if (ret)
+ ehca_err(&shca->ib_device, "ret=%x shca=%p e_pd=%p e_maxmr=%p",
+ ret, shca, e_pd, e_maxmr);
+ return ret;
+} /* end ehca_reg_internal_maxmr() */
+
+/*----------------------------------------------------------------------*/
+
+int ehca_reg_maxmr(struct ehca_shca *shca,
+ struct ehca_mr *e_newmr,
+ u64 *iova_start,
+ int acl,
+ struct ehca_pd *e_pd,
+ u32 *lkey,
+ u32 *rkey)
+{
+ u64 h_ret;
+ struct ehca_mr *e_origmr = shca->maxmr;
+ u32 hipz_acl;
+ struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0};
+
+ ehca_mrmw_map_acl(acl, &hipz_acl);
+ ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl);
+
+ h_ret = hipz_h_register_smr(shca->ipz_hca_handle, e_newmr, e_origmr,
+ (u64)iova_start, hipz_acl, e_pd->fw_pd,
+ &hipzout);
+ if (h_ret != H_SUCCESS) {
+ ehca_err(&shca->ib_device, "hipz_reg_smr failed, h_ret=%lx "
+ "e_origmr=%p hca_hndl=%lx mr_hndl=%lx lkey=%x",
+ h_ret, e_origmr, shca->ipz_hca_handle.handle,
+ e_origmr->ipz_mr_handle.handle,
+ e_origmr->ib.ib_mr.lkey);
+ return ehca_mrmw_map_hrc_reg_smr(h_ret);
+ }
+ /* successful registration */
+ e_newmr->num_pages = e_origmr->num_pages;
+ e_newmr->num_4k = e_origmr->num_4k;
+ e_newmr->start = iova_start;
+ e_newmr->size = e_origmr->size;
+ e_newmr->acl = acl;
+ e_newmr->ipz_mr_handle = hipzout.handle;
+ *lkey = hipzout.lkey;
+ *rkey = hipzout.rkey;
+ return 0;
+} /* end ehca_reg_maxmr() */
+
+/*----------------------------------------------------------------------*/
+
+int ehca_dereg_internal_maxmr(struct ehca_shca *shca)
+{
+ int ret;
+ struct ehca_mr *e_maxmr;
+ struct ib_pd *ib_pd;
+
+ if (!shca->maxmr) {
+ ehca_err(&shca->ib_device, "bad call, shca=%p", shca);
+ ret = -EINVAL;
+ goto ehca_dereg_internal_maxmr_exit0;
+ }
+
+ e_maxmr = shca->maxmr;
+ ib_pd = e_maxmr->ib.ib_mr.pd;
+ shca->maxmr = NULL; /* remove internal max-MR indication from SHCA */
+
+ ret = ehca_dereg_mr(&e_maxmr->ib.ib_mr);
+ if (ret) {
+ ehca_err(&shca->ib_device, "dereg internal max-MR failed, "
+ "ret=%x e_maxmr=%p shca=%p lkey=%x",
+ ret, e_maxmr, shca, e_maxmr->ib.ib_mr.lkey);
+ shca->maxmr = e_maxmr;
+ goto ehca_dereg_internal_maxmr_exit0;
+ }
+
+ atomic_dec(&ib_pd->usecnt);
+
+ehca_dereg_internal_maxmr_exit0:
+ if (ret)
+ ehca_err(&shca->ib_device, "ret=%x shca=%p shca->maxmr=%p",
+ ret, shca, shca->maxmr);
+ return ret;
+} /* end ehca_dereg_internal_maxmr() */
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * check physical buffer array of MR verbs for validness and
+ * calculates MR size
+ */
+int ehca_mr_chk_buf_and_calc_size(struct ib_phys_buf *phys_buf_array,
+ int num_phys_buf,
+ u64 *iova_start,
+ u64 *size)
+{
+ struct ib_phys_buf *pbuf = phys_buf_array;
+ u64 size_count = 0;
+ u32 i;
+
+ if (num_phys_buf == 0) {
+ ehca_gen_err("bad phys buf array len, num_phys_buf=0");
+ return -EINVAL;
+ }
+ /* check first buffer */
+ if (((u64)iova_start & ~PAGE_MASK) != (pbuf->addr & ~PAGE_MASK)) {
+ ehca_gen_err("iova_start/addr mismatch, iova_start=%p "
+ "pbuf->addr=%lx pbuf->size=%lx",
+ iova_start, pbuf->addr, pbuf->size);
+ return -EINVAL;
+ }
+ if (((pbuf->addr + pbuf->size) % PAGE_SIZE) &&
+ (num_phys_buf > 1)) {
+ ehca_gen_err("addr/size mismatch in 1st buf, pbuf->addr=%lx "
+ "pbuf->size=%lx", pbuf->addr, pbuf->size);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < num_phys_buf; i++) {
+ if ((i > 0) && (pbuf->addr % PAGE_SIZE)) {
+ ehca_gen_err("bad address, i=%x pbuf->addr=%lx "
+ "pbuf->size=%lx",
+ i, pbuf->addr, pbuf->size);
+ return -EINVAL;
+ }
+ if (((i > 0) && /* not 1st */
+ (i < (num_phys_buf - 1)) && /* not last */
+ (pbuf->size % PAGE_SIZE)) || (pbuf->size == 0)) {
+ ehca_gen_err("bad size, i=%x pbuf->size=%lx",
+ i, pbuf->size);
+ return -EINVAL;
+ }
+ size_count += pbuf->size;
+ pbuf++;
+ }
+
+ *size = size_count;
+ return 0;
+} /* end ehca_mr_chk_buf_and_calc_size() */
+
+/*----------------------------------------------------------------------*/
+
+/* check page list of map FMR verb for validness */
+int ehca_fmr_check_page_list(struct ehca_mr *e_fmr,
+ u64 *page_list,
+ int list_len)
+{
+ u32 i;
+ u64 *page;
+
+ if ((list_len == 0) || (list_len > e_fmr->fmr_max_pages)) {
+ ehca_gen_err("bad list_len, list_len=%x "
+ "e_fmr->fmr_max_pages=%x fmr=%p",
+ list_len, e_fmr->fmr_max_pages, e_fmr);
+ return -EINVAL;
+ }
+
+ /* each page must be aligned */
+ page = page_list;
+ for (i = 0; i < list_len; i++) {
+ if (*page % e_fmr->fmr_page_size) {
+ ehca_gen_err("bad page, i=%x *page=%lx page=%p fmr=%p "
+ "fmr_page_size=%x", i, *page, page, e_fmr,
+ e_fmr->fmr_page_size);
+ return -EINVAL;
+ }
+ page++;
+ }
+
+ return 0;
+} /* end ehca_fmr_check_page_list() */
+
+/*----------------------------------------------------------------------*/
+
+/* setup page buffer from page info */
+int ehca_set_pagebuf(struct ehca_mr *e_mr,
+ struct ehca_mr_pginfo *pginfo,
+ u32 number,
+ u64 *kpage)
+{
+ int ret = 0;
+ struct ib_umem_chunk *prev_chunk;
+ struct ib_umem_chunk *chunk;
+ struct ib_phys_buf *pbuf;
+ u64 *fmrlist;
+ u64 num4k, pgaddr, offs4k;
+ u32 i = 0;
+ u32 j = 0;
+
+ if (pginfo->type == EHCA_MR_PGI_PHYS) {
+ /* loop over desired phys_buf_array entries */
+ while (i < number) {
+ pbuf = pginfo->phys_buf_array + pginfo->next_buf;
+ num4k = ((pbuf->addr % EHCA_PAGESIZE) + pbuf->size +
+ EHCA_PAGESIZE - 1) / EHCA_PAGESIZE;
+ offs4k = (pbuf->addr & ~PAGE_MASK) / EHCA_PAGESIZE;
+ while (pginfo->next_4k < offs4k + num4k) {
+ /* sanity check */
+ if ((pginfo->page_cnt >= pginfo->num_pages) ||
+ (pginfo->page_4k_cnt >= pginfo->num_4k)) {
+ ehca_gen_err("page_cnt >= num_pages, "
+ "page_cnt=%lx "
+ "num_pages=%lx "
+ "page_4k_cnt=%lx "
+ "num_4k=%lx i=%x",
+ pginfo->page_cnt,
+ pginfo->num_pages,
+ pginfo->page_4k_cnt,
+ pginfo->num_4k, i);
+ ret = -EFAULT;
+ goto ehca_set_pagebuf_exit0;
+ }
+ *kpage = phys_to_abs(
+ (pbuf->addr & EHCA_PAGEMASK)
+ + (pginfo->next_4k * EHCA_PAGESIZE));
+ if ( !(*kpage) && pbuf->addr ) {
+ ehca_gen_err("pbuf->addr=%lx "
+ "pbuf->size=%lx "
+ "next_4k=%lx", pbuf->addr,
+ pbuf->size,
+ pginfo->next_4k);
+ ret = -EFAULT;
+ goto ehca_set_pagebuf_exit0;
+ }
+ (pginfo->page_4k_cnt)++;
+ (pginfo->next_4k)++;
+ if (pginfo->next_4k %
+ (PAGE_SIZE / EHCA_PAGESIZE) == 0)
+ (pginfo->page_cnt)++;
+ kpage++;
+ i++;
+ if (i >= number) break;
+ }
+ if (pginfo->next_4k >= offs4k + num4k) {
+ (pginfo->next_buf)++;
+ pginfo->next_4k = 0;
+ }
+ }
+ } else if (pginfo->type == EHCA_MR_PGI_USER) {
+ /* loop over desired chunk entries */
+ chunk = pginfo->next_chunk;
+ prev_chunk = pginfo->next_chunk;
+ list_for_each_entry_continue(chunk,
+ (&(pginfo->region->chunk_list)),
+ list) {
+ for (i = pginfo->next_nmap; i < chunk->nmap; ) {
+ pgaddr = ( page_to_pfn(chunk->page_list[i].page)
+ << PAGE_SHIFT );
+ *kpage = phys_to_abs(pgaddr +
+ (pginfo->next_4k *
+ EHCA_PAGESIZE));
+ if ( !(*kpage) ) {
+ ehca_gen_err("pgaddr=%lx "
+ "chunk->page_list[i]=%lx "
+ "i=%x next_4k=%lx mr=%p",
+ pgaddr,
+ (u64)sg_dma_address(
+ &chunk->
+ page_list[i]),
+ i, pginfo->next_4k, e_mr);
+ ret = -EFAULT;
+ goto ehca_set_pagebuf_exit0;
+ }
+ (pginfo->page_4k_cnt)++;
+ (pginfo->next_4k)++;
+ kpage++;
+ if (pginfo->next_4k %
+ (PAGE_SIZE / EHCA_PAGESIZE) == 0) {
+ (pginfo->page_cnt)++;
+ (pginfo->next_nmap)++;
+ pginfo->next_4k = 0;
+ i++;
+ }
+ j++;
+ if (j >= number) break;
+ }
+ if ((pginfo->next_nmap >= chunk->nmap) &&
+ (j >= number)) {
+ pginfo->next_nmap = 0;
+ prev_chunk = chunk;
+ break;
+ } else if (pginfo->next_nmap >= chunk->nmap) {
+ pginfo->next_nmap = 0;
+ prev_chunk = chunk;
+ } else if (j >= number)
+ break;
+ else
+ prev_chunk = chunk;
+ }
+ pginfo->next_chunk =
+ list_prepare_entry(prev_chunk,
+ (&(pginfo->region->chunk_list)),
+ list);
+ } else if (pginfo->type == EHCA_MR_PGI_FMR) {
+ /* loop over desired page_list entries */
+ fmrlist = pginfo->page_list + pginfo->next_listelem;
+ for (i = 0; i < number; i++) {
+ *kpage = phys_to_abs((*fmrlist & EHCA_PAGEMASK) +
+ pginfo->next_4k * EHCA_PAGESIZE);
+ if ( !(*kpage) ) {
+ ehca_gen_err("*fmrlist=%lx fmrlist=%p "
+ "next_listelem=%lx next_4k=%lx",
+ *fmrlist, fmrlist,
+ pginfo->next_listelem,
+ pginfo->next_4k);
+ ret = -EFAULT;
+ goto ehca_set_pagebuf_exit0;
+ }
+ (pginfo->page_4k_cnt)++;
+ (pginfo->next_4k)++;
+ kpage++;
+ if (pginfo->next_4k %
+ (e_mr->fmr_page_size / EHCA_PAGESIZE) == 0) {
+ (pginfo->page_cnt)++;
+ (pginfo->next_listelem)++;
+ fmrlist++;
+ pginfo->next_4k = 0;
+ }
+ }
+ } else {
+ ehca_gen_err("bad pginfo->type=%x", pginfo->type);
+ ret = -EFAULT;
+ goto ehca_set_pagebuf_exit0;
+ }
+
+ehca_set_pagebuf_exit0:
+ if (ret)
+ ehca_gen_err("ret=%x e_mr=%p pginfo=%p type=%x num_pages=%lx "
+ "num_4k=%lx next_buf=%lx next_4k=%lx number=%x "
+ "kpage=%p page_cnt=%lx page_4k_cnt=%lx i=%x "
+ "next_listelem=%lx region=%p next_chunk=%p "
+ "next_nmap=%lx", ret, e_mr, pginfo, pginfo->type,
+ pginfo->num_pages, pginfo->num_4k,
+ pginfo->next_buf, pginfo->next_4k, number, kpage,
+ pginfo->page_cnt, pginfo->page_4k_cnt, i,
+ pginfo->next_listelem, pginfo->region,
+ pginfo->next_chunk, pginfo->next_nmap);
+ return ret;
+} /* end ehca_set_pagebuf() */
+
+/*----------------------------------------------------------------------*/
+
+/* setup 1 page from page info page buffer */
+int ehca_set_pagebuf_1(struct ehca_mr *e_mr,
+ struct ehca_mr_pginfo *pginfo,
+ u64 *rpage)
+{
+ int ret = 0;
+ struct ib_phys_buf *tmp_pbuf;
+ u64 *fmrlist;
+ struct ib_umem_chunk *chunk;
+ struct ib_umem_chunk *prev_chunk;
+ u64 pgaddr, num4k, offs4k;
+
+ if (pginfo->type == EHCA_MR_PGI_PHYS) {
+ /* sanity check */
+ if ((pginfo->page_cnt >= pginfo->num_pages) ||
+ (pginfo->page_4k_cnt >= pginfo->num_4k)) {
+ ehca_gen_err("page_cnt >= num_pages, page_cnt=%lx "
+ "num_pages=%lx page_4k_cnt=%lx num_4k=%lx",
+ pginfo->page_cnt, pginfo->num_pages,
+ pginfo->page_4k_cnt, pginfo->num_4k);
+ ret = -EFAULT;
+ goto ehca_set_pagebuf_1_exit0;
+ }
+ tmp_pbuf = pginfo->phys_buf_array + pginfo->next_buf;
+ num4k = ((tmp_pbuf->addr % EHCA_PAGESIZE) + tmp_pbuf->size +
+ EHCA_PAGESIZE - 1) / EHCA_PAGESIZE;
+ offs4k = (tmp_pbuf->addr & ~PAGE_MASK) / EHCA_PAGESIZE;
+ *rpage = phys_to_abs((tmp_pbuf->addr & EHCA_PAGEMASK) +
+ (pginfo->next_4k * EHCA_PAGESIZE));
+ if ( !(*rpage) && tmp_pbuf->addr ) {
+ ehca_gen_err("tmp_pbuf->addr=%lx"
+ " tmp_pbuf->size=%lx next_4k=%lx",
+ tmp_pbuf->addr, tmp_pbuf->size,
+ pginfo->next_4k);
+ ret = -EFAULT;
+ goto ehca_set_pagebuf_1_exit0;
+ }
+ (pginfo->page_4k_cnt)++;
+ (pginfo->next_4k)++;
+ if (pginfo->next_4k % (PAGE_SIZE / EHCA_PAGESIZE) == 0)
+ (pginfo->page_cnt)++;
+ if (pginfo->next_4k >= offs4k + num4k) {
+ (pginfo->next_buf)++;
+ pginfo->next_4k = 0;
+ }
+ } else if (pginfo->type == EHCA_MR_PGI_USER) {
+ chunk = pginfo->next_chunk;
+ prev_chunk = pginfo->next_chunk;
+ list_for_each_entry_continue(chunk,
+ (&(pginfo->region->chunk_list)),
+ list) {
+ pgaddr = ( page_to_pfn(chunk->page_list[
+ pginfo->next_nmap].page)
+ << PAGE_SHIFT);
+ *rpage = phys_to_abs(pgaddr +
+ (pginfo->next_4k * EHCA_PAGESIZE));
+ if ( !(*rpage) ) {
+ ehca_gen_err("pgaddr=%lx chunk->page_list[]=%lx"
+ " next_nmap=%lx next_4k=%lx mr=%p",
+ pgaddr, (u64)sg_dma_address(
+ &chunk->page_list[
+ pginfo->
+ next_nmap]),
+ pginfo->next_nmap, pginfo->next_4k,
+ e_mr);
+ ret = -EFAULT;
+ goto ehca_set_pagebuf_1_exit0;
+ }
+ (pginfo->page_4k_cnt)++;
+ (pginfo->next_4k)++;
+ if (pginfo->next_4k %
+ (PAGE_SIZE / EHCA_PAGESIZE) == 0) {
+ (pginfo->page_cnt)++;
+ (pginfo->next_nmap)++;
+ pginfo->next_4k = 0;
+ }
+ if (pginfo->next_nmap >= chunk->nmap) {
+ pginfo->next_nmap = 0;
+ prev_chunk = chunk;
+ }
+ break;
+ }
+ pginfo->next_chunk =
+ list_prepare_entry(prev_chunk,
+ (&(pginfo->region->chunk_list)),
+ list);
+ } else if (pginfo->type == EHCA_MR_PGI_FMR) {
+ fmrlist = pginfo->page_list + pginfo->next_listelem;
+ *rpage = phys_to_abs((*fmrlist & EHCA_PAGEMASK) +
+ pginfo->next_4k * EHCA_PAGESIZE);
+ if ( !(*rpage) ) {
+ ehca_gen_err("*fmrlist=%lx fmrlist=%p "
+ "next_listelem=%lx next_4k=%lx",
+ *fmrlist, fmrlist, pginfo->next_listelem,
+ pginfo->next_4k);
+ ret = -EFAULT;
+ goto ehca_set_pagebuf_1_exit0;
+ }
+ (pginfo->page_4k_cnt)++;
+ (pginfo->next_4k)++;
+ if (pginfo->next_4k %
+ (e_mr->fmr_page_size / EHCA_PAGESIZE) == 0) {
+ (pginfo->page_cnt)++;
+ (pginfo->next_listelem)++;
+ pginfo->next_4k = 0;
+ }
+ } else {
+ ehca_gen_err("bad pginfo->type=%x", pginfo->type);
+ ret = -EFAULT;
+ goto ehca_set_pagebuf_1_exit0;
+ }
+
+ehca_set_pagebuf_1_exit0:
+ if (ret)
+ ehca_gen_err("ret=%x e_mr=%p pginfo=%p type=%x num_pages=%lx "
+ "num_4k=%lx next_buf=%lx next_4k=%lx rpage=%p "
+ "page_cnt=%lx page_4k_cnt=%lx next_listelem=%lx "
+ "region=%p next_chunk=%p next_nmap=%lx", ret, e_mr,
+ pginfo, pginfo->type, pginfo->num_pages,
+ pginfo->num_4k, pginfo->next_buf, pginfo->next_4k,
+ rpage, pginfo->page_cnt, pginfo->page_4k_cnt,
+ pginfo->next_listelem, pginfo->region,
+ pginfo->next_chunk, pginfo->next_nmap);
+ return ret;
+} /* end ehca_set_pagebuf_1() */
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * check MR if it is a max-MR, i.e. uses whole memory
+ * in case it's a max-MR 1 is returned, else 0
+ */
+int ehca_mr_is_maxmr(u64 size,
+ u64 *iova_start)
+{
+ /* a MR is treated as max-MR only if it fits following: */
+ if ((size == ((u64)high_memory - PAGE_OFFSET)) &&
+ (iova_start == (void*)KERNELBASE)) {
+ ehca_gen_dbg("this is a max-MR");
+ return 1;
+ } else
+ return 0;
+} /* end ehca_mr_is_maxmr() */
+
+/*----------------------------------------------------------------------*/
+
+/* map access control for MR/MW. This routine is used for MR and MW. */
+void ehca_mrmw_map_acl(int ib_acl,
+ u32 *hipz_acl)
+{
+ *hipz_acl = 0;
+ if (ib_acl & IB_ACCESS_REMOTE_READ)
+ *hipz_acl |= HIPZ_ACCESSCTRL_R_READ;
+ if (ib_acl & IB_ACCESS_REMOTE_WRITE)
+ *hipz_acl |= HIPZ_ACCESSCTRL_R_WRITE;
+ if (ib_acl & IB_ACCESS_REMOTE_ATOMIC)
+ *hipz_acl |= HIPZ_ACCESSCTRL_R_ATOMIC;
+ if (ib_acl & IB_ACCESS_LOCAL_WRITE)
+ *hipz_acl |= HIPZ_ACCESSCTRL_L_WRITE;
+ if (ib_acl & IB_ACCESS_MW_BIND)
+ *hipz_acl |= HIPZ_ACCESSCTRL_MW_BIND;
+} /* end ehca_mrmw_map_acl() */
+
+/*----------------------------------------------------------------------*/
+
+/* sets page size in hipz access control for MR/MW. */
+void ehca_mrmw_set_pgsize_hipz_acl(u32 *hipz_acl) /*INOUT*/
+{
+ return; /* HCA supports only 4k */
+} /* end ehca_mrmw_set_pgsize_hipz_acl() */
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * reverse map access control for MR/MW.
+ * This routine is used for MR and MW.
+ */
+void ehca_mrmw_reverse_map_acl(const u32 *hipz_acl,
+ int *ib_acl) /*OUT*/
+{
+ *ib_acl = 0;
+ if (*hipz_acl & HIPZ_ACCESSCTRL_R_READ)
+ *ib_acl |= IB_ACCESS_REMOTE_READ;
+ if (*hipz_acl & HIPZ_ACCESSCTRL_R_WRITE)
+ *ib_acl |= IB_ACCESS_REMOTE_WRITE;
+ if (*hipz_acl & HIPZ_ACCESSCTRL_R_ATOMIC)
+ *ib_acl |= IB_ACCESS_REMOTE_ATOMIC;
+ if (*hipz_acl & HIPZ_ACCESSCTRL_L_WRITE)
+ *ib_acl |= IB_ACCESS_LOCAL_WRITE;
+ if (*hipz_acl & HIPZ_ACCESSCTRL_MW_BIND)
+ *ib_acl |= IB_ACCESS_MW_BIND;
+} /* end ehca_mrmw_reverse_map_acl() */
+
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * map HIPZ rc to IB retcodes for MR/MW allocations
+ * Used for hipz_mr_reg_alloc and hipz_mw_alloc.
+ */
+int ehca_mrmw_map_hrc_alloc(const u64 hipz_rc)
+{
+ switch (hipz_rc) {
+ case H_SUCCESS: /* successful completion */
+ return 0;
+ case H_ADAPTER_PARM: /* invalid adapter handle */
+ case H_RT_PARM: /* invalid resource type */
+ case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */
+ case H_MLENGTH_PARM: /* invalid memory length */
+ case H_MEM_ACCESS_PARM: /* invalid access controls */
+ case H_CONSTRAINED: /* resource constraint */
+ return -EINVAL;
+ case H_BUSY: /* long busy */
+ return -EBUSY;
+ default:
+ return -EINVAL;
+ }
+} /* end ehca_mrmw_map_hrc_alloc() */
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * map HIPZ rc to IB retcodes for MR register rpage
+ * Used for hipz_h_register_rpage_mr at registering last page
+ */
+int ehca_mrmw_map_hrc_rrpg_last(const u64 hipz_rc)
+{
+ switch (hipz_rc) {
+ case H_SUCCESS: /* registration complete */
+ return 0;
+ case H_PAGE_REGISTERED: /* page registered */
+ case H_ADAPTER_PARM: /* invalid adapter handle */
+ case H_RH_PARM: /* invalid resource handle */
+/* case H_QT_PARM: invalid queue type */
+ case H_PARAMETER: /*
+ * invalid logical address,
+ * or count zero or greater 512
+ */
+ case H_TABLE_FULL: /* page table full */
+ case H_HARDWARE: /* HCA not operational */
+ return -EINVAL;
+ case H_BUSY: /* long busy */
+ return -EBUSY;
+ default:
+ return -EINVAL;
+ }
+} /* end ehca_mrmw_map_hrc_rrpg_last() */
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * map HIPZ rc to IB retcodes for MR register rpage
+ * Used for hipz_h_register_rpage_mr at registering one page, but not last page
+ */
+int ehca_mrmw_map_hrc_rrpg_notlast(const u64 hipz_rc)
+{
+ switch (hipz_rc) {
+ case H_PAGE_REGISTERED: /* page registered */
+ return 0;
+ case H_SUCCESS: /* registration complete */
+ case H_ADAPTER_PARM: /* invalid adapter handle */
+ case H_RH_PARM: /* invalid resource handle */
+/* case H_QT_PARM: invalid queue type */
+ case H_PARAMETER: /*
+ * invalid logical address,
+ * or count zero or greater 512
+ */
+ case H_TABLE_FULL: /* page table full */
+ case H_HARDWARE: /* HCA not operational */
+ return -EINVAL;
+ case H_BUSY: /* long busy */
+ return -EBUSY;
+ default:
+ return -EINVAL;
+ }
+} /* end ehca_mrmw_map_hrc_rrpg_notlast() */
+
+/*----------------------------------------------------------------------*/
+
+/* map HIPZ rc to IB retcodes for MR query. Used for hipz_mr_query. */
+int ehca_mrmw_map_hrc_query_mr(const u64 hipz_rc)
+{
+ switch (hipz_rc) {
+ case H_SUCCESS: /* successful completion */
+ return 0;
+ case H_ADAPTER_PARM: /* invalid adapter handle */
+ case H_RH_PARM: /* invalid resource handle */
+ return -EINVAL;
+ case H_BUSY: /* long busy */
+ return -EBUSY;
+ default:
+ return -EINVAL;
+ }
+} /* end ehca_mrmw_map_hrc_query_mr() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+/*
+ * map HIPZ rc to IB retcodes for freeing MR resource
+ * Used for hipz_h_free_resource_mr
+ */
+int ehca_mrmw_map_hrc_free_mr(const u64 hipz_rc)
+{
+ switch (hipz_rc) {
+ case H_SUCCESS: /* resource freed */
+ return 0;
+ case H_ADAPTER_PARM: /* invalid adapter handle */
+ case H_RH_PARM: /* invalid resource handle */
+ case H_R_STATE: /* invalid resource state */
+ case H_HARDWARE: /* HCA not operational */
+ return -EINVAL;
+ case H_RESOURCE: /* Resource in use */
+ case H_BUSY: /* long busy */
+ return -EBUSY;
+ default:
+ return -EINVAL;
+ }
+} /* end ehca_mrmw_map_hrc_free_mr() */
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * map HIPZ rc to IB retcodes for freeing MW resource
+ * Used for hipz_h_free_resource_mw
+ */
+int ehca_mrmw_map_hrc_free_mw(const u64 hipz_rc)
+{
+ switch (hipz_rc) {
+ case H_SUCCESS: /* resource freed */
+ return 0;
+ case H_ADAPTER_PARM: /* invalid adapter handle */
+ case H_RH_PARM: /* invalid resource handle */
+ case H_R_STATE: /* invalid resource state */
+ case H_HARDWARE: /* HCA not operational */
+ return -EINVAL;
+ case H_RESOURCE: /* Resource in use */
+ case H_BUSY: /* long busy */
+ return -EBUSY;
+ default:
+ return -EINVAL;
+ }
+} /* end ehca_mrmw_map_hrc_free_mw() */
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * map HIPZ rc to IB retcodes for SMR registrations
+ * Used for hipz_h_register_smr.
+ */
+int ehca_mrmw_map_hrc_reg_smr(const u64 hipz_rc)
+{
+ switch (hipz_rc) {
+ case H_SUCCESS: /* successful completion */
+ return 0;
+ case H_ADAPTER_PARM: /* invalid adapter handle */
+ case H_RH_PARM: /* invalid resource handle */
+ case H_MEM_PARM: /* invalid MR virtual address */
+ case H_MEM_ACCESS_PARM: /* invalid access controls */
+ case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */
+ return -EINVAL;
+ case H_BUSY: /* long busy */
+ return -EBUSY;
+ default:
+ return -EINVAL;
+ }
+} /* end ehca_mrmw_map_hrc_reg_smr() */
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * MR destructor and constructor
+ * used in Reregister MR verb, sets all fields in ehca_mr_t to 0,
+ * except struct ib_mr and spinlock
+ */
+void ehca_mr_deletenew(struct ehca_mr *mr)
+{
+ mr->flags = 0;
+ mr->num_pages = 0;
+ mr->num_4k = 0;
+ mr->acl = 0;
+ mr->start = NULL;
+ mr->fmr_page_size = 0;
+ mr->fmr_max_pages = 0;
+ mr->fmr_max_maps = 0;
+ mr->fmr_map_cnt = 0;
+ memset(&mr->ipz_mr_handle, 0, sizeof(mr->ipz_mr_handle));
+ memset(&mr->galpas, 0, sizeof(mr->galpas));
+ mr->nr_of_pages = 0;
+ mr->pagearray = NULL;
+} /* end ehca_mr_deletenew() */
+
+int ehca_init_mrmw_cache(void)
+{
+ mr_cache = kmem_cache_create("ehca_cache_mr",
+ sizeof(struct ehca_mr), 0,
+ SLAB_HWCACHE_ALIGN,
+ NULL, NULL);
+ if (!mr_cache)
+ return -ENOMEM;
+ mw_cache = kmem_cache_create("ehca_cache_mw",
+ sizeof(struct ehca_mw), 0,
+ SLAB_HWCACHE_ALIGN,
+ NULL, NULL);
+ if (!mw_cache) {
+ kmem_cache_destroy(mr_cache);
+ mr_cache = NULL;
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+void ehca_cleanup_mrmw_cache(void)
+{
+ if (mr_cache)
+ kmem_cache_destroy(mr_cache);
+ if (mw_cache)
+ kmem_cache_destroy(mw_cache);
+}
diff --git a/drivers/infiniband/hw/ehca/ehca_mrmw.h b/drivers/infiniband/hw/ehca/ehca_mrmw.h
new file mode 100644
index 0000000..d936e40
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_mrmw.h
@@ -0,0 +1,140 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * MR/MW declarations and inline functions
+ *
+ * Authors: Dietmar Decker <ddecker@de.ibm.com>
+ * Christoph Raisch <raisch@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _EHCA_MRMW_H_
+#define _EHCA_MRMW_H_
+
+int ehca_reg_mr(struct ehca_shca *shca,
+ struct ehca_mr *e_mr,
+ u64 *iova_start,
+ u64 size,
+ int acl,
+ struct ehca_pd *e_pd,
+ struct ehca_mr_pginfo *pginfo,
+ u32 *lkey,
+ u32 *rkey);
+
+int ehca_reg_mr_rpages(struct ehca_shca *shca,
+ struct ehca_mr *e_mr,
+ struct ehca_mr_pginfo *pginfo);
+
+int ehca_rereg_mr(struct ehca_shca *shca,
+ struct ehca_mr *e_mr,
+ u64 *iova_start,
+ u64 size,
+ int mr_access_flags,
+ struct ehca_pd *e_pd,
+ struct ehca_mr_pginfo *pginfo,
+ u32 *lkey,
+ u32 *rkey);
+
+int ehca_unmap_one_fmr(struct ehca_shca *shca,
+ struct ehca_mr *e_fmr);
+
+int ehca_reg_smr(struct ehca_shca *shca,
+ struct ehca_mr *e_origmr,
+ struct ehca_mr *e_newmr,
+ u64 *iova_start,
+ int acl,
+ struct ehca_pd *e_pd,
+ u32 *lkey,
+ u32 *rkey);
+
+int ehca_reg_internal_maxmr(struct ehca_shca *shca,
+ struct ehca_pd *e_pd,
+ struct ehca_mr **maxmr);
+
+int ehca_reg_maxmr(struct ehca_shca *shca,
+ struct ehca_mr *e_newmr,
+ u64 *iova_start,
+ int acl,
+ struct ehca_pd *e_pd,
+ u32 *lkey,
+ u32 *rkey);
+
+int ehca_dereg_internal_maxmr(struct ehca_shca *shca);
+
+int ehca_mr_chk_buf_and_calc_size(struct ib_phys_buf *phys_buf_array,
+ int num_phys_buf,
+ u64 *iova_start,
+ u64 *size);
+
+int ehca_fmr_check_page_list(struct ehca_mr *e_fmr,
+ u64 *page_list,
+ int list_len);
+
+int ehca_set_pagebuf(struct ehca_mr *e_mr,
+ struct ehca_mr_pginfo *pginfo,
+ u32 number,
+ u64 *kpage);
+
+int ehca_set_pagebuf_1(struct ehca_mr *e_mr,
+ struct ehca_mr_pginfo *pginfo,
+ u64 *rpage);
+
+int ehca_mr_is_maxmr(u64 size,
+ u64 *iova_start);
+
+void ehca_mrmw_map_acl(int ib_acl,
+ u32 *hipz_acl);
+
+void ehca_mrmw_set_pgsize_hipz_acl(u32 *hipz_acl);
+
+void ehca_mrmw_reverse_map_acl(const u32 *hipz_acl,
+ int *ib_acl);
+
+int ehca_mrmw_map_hrc_alloc(const u64 hipz_rc);
+
+int ehca_mrmw_map_hrc_rrpg_last(const u64 hipz_rc);
+
+int ehca_mrmw_map_hrc_rrpg_notlast(const u64 hipz_rc);
+
+int ehca_mrmw_map_hrc_query_mr(const u64 hipz_rc);
+
+int ehca_mrmw_map_hrc_free_mr(const u64 hipz_rc);
+
+int ehca_mrmw_map_hrc_free_mw(const u64 hipz_rc);
+
+int ehca_mrmw_map_hrc_reg_smr(const u64 hipz_rc);
+
+void ehca_mr_deletenew(struct ehca_mr *mr);
+
+#endif /*_EHCA_MRMW_H_*/
diff --git a/drivers/infiniband/hw/ehca/ehca_pd.c b/drivers/infiniband/hw/ehca/ehca_pd.c
new file mode 100644
index 0000000..2c3cdc6
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_pd.c
@@ -0,0 +1,114 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * PD functions
+ *
+ * Authors: Christoph Raisch <raisch@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <asm/current.h>
+
+#include "ehca_tools.h"
+#include "ehca_iverbs.h"
+
+static struct kmem_cache *pd_cache;
+
+struct ib_pd *ehca_alloc_pd(struct ib_device *device,
+ struct ib_ucontext *context, struct ib_udata *udata)
+{
+ struct ehca_pd *pd;
+
+ pd = kmem_cache_alloc(pd_cache, SLAB_KERNEL);
+ if (!pd) {
+ ehca_err(device, "device=%p context=%p out of memory",
+ device, context);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ memset(pd, 0, sizeof(struct ehca_pd));
+ pd->ownpid = current->tgid;
+
+ /*
+ * Kernel PD: when device = -1, 0
+ * User PD: when context != -1
+ */
+ if (!context) {
+ /*
+ * Kernel PDs after init reuses always
+ * the one created in ehca_shca_reopen()
+ */
+ struct ehca_shca *shca = container_of(device, struct ehca_shca,
+ ib_device);
+ pd->fw_pd.value = shca->pd->fw_pd.value;
+ } else
+ pd->fw_pd.value = (u64)pd;
+
+ return &pd->ib_pd;
+}
+
+int ehca_dealloc_pd(struct ib_pd *pd)
+{
+ u32 cur_pid = current->tgid;
+ struct ehca_pd *my_pd = container_of(pd, struct ehca_pd, ib_pd);
+
+ if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
+ my_pd->ownpid != cur_pid) {
+ ehca_err(pd->device, "Invalid caller pid=%x ownpid=%x",
+ cur_pid, my_pd->ownpid);
+ return -EINVAL;
+ }
+
+ kmem_cache_free(pd_cache,
+ container_of(pd, struct ehca_pd, ib_pd));
+
+ return 0;
+}
+
+int ehca_init_pd_cache(void)
+{
+ pd_cache = kmem_cache_create("ehca_cache_pd",
+ sizeof(struct ehca_pd), 0,
+ SLAB_HWCACHE_ALIGN,
+ NULL, NULL);
+ if (!pd_cache)
+ return -ENOMEM;
+ return 0;
+}
+
+void ehca_cleanup_pd_cache(void)
+{
+ if (pd_cache)
+ kmem_cache_destroy(pd_cache);
+}
diff --git a/drivers/infiniband/hw/ehca/ehca_qes.h b/drivers/infiniband/hw/ehca/ehca_qes.h
new file mode 100644
index 0000000..8707d29
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_qes.h
@@ -0,0 +1,259 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * Hardware request structures
+ *
+ * Authors: Waleri Fomin <fomin@de.ibm.com>
+ * Reinhard Ernst <rernst@de.ibm.com>
+ * Christoph Raisch <raisch@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#ifndef _EHCA_QES_H_
+#define _EHCA_QES_H_
+
+#include "ehca_tools.h"
+
+/* virtual scatter gather entry to specify remote adresses with length */
+struct ehca_vsgentry {
+ u64 vaddr;
+ u32 lkey;
+ u32 length;
+};
+
+#define GRH_FLAG_MASK EHCA_BMASK_IBM(7,7)
+#define GRH_IPVERSION_MASK EHCA_BMASK_IBM(0,3)
+#define GRH_TCLASS_MASK EHCA_BMASK_IBM(4,12)
+#define GRH_FLOWLABEL_MASK EHCA_BMASK_IBM(13,31)
+#define GRH_PAYLEN_MASK EHCA_BMASK_IBM(32,47)
+#define GRH_NEXTHEADER_MASK EHCA_BMASK_IBM(48,55)
+#define GRH_HOPLIMIT_MASK EHCA_BMASK_IBM(56,63)
+
+/*
+ * Unreliable Datagram Address Vector Format
+ * see IBTA Vol1 chapter 8.3 Global Routing Header
+ */
+struct ehca_ud_av {
+ u8 sl;
+ u8 lnh;
+ u16 dlid;
+ u8 reserved1;
+ u8 reserved2;
+ u8 reserved3;
+ u8 slid_path_bits;
+ u8 reserved4;
+ u8 ipd;
+ u8 reserved5;
+ u8 pmtu;
+ u32 reserved6;
+ u64 reserved7;
+ union {
+ struct {
+ u64 word_0; /* always set to 6 */
+ /*should be 0x1B for IB transport */
+ u64 word_1;
+ u64 word_2;
+ u64 word_3;
+ u64 word_4;
+ } grh;
+ struct {
+ u32 wd_0;
+ u32 wd_1;
+ /* DWord_1 --> SGID */
+
+ u32 sgid_wd3;
+ u32 sgid_wd2;
+
+ u32 sgid_wd1;
+ u32 sgid_wd0;
+ /* DWord_3 --> DGID */
+
+ u32 dgid_wd3;
+ u32 dgid_wd2;
+
+ u32 dgid_wd1;
+ u32 dgid_wd0;
+ } grh_l;
+ };
+};
+
+/* maximum number of sg entries allowed in a WQE */
+#define MAX_WQE_SG_ENTRIES 252
+
+#define WQE_OPTYPE_SEND 0x80
+#define WQE_OPTYPE_RDMAREAD 0x40
+#define WQE_OPTYPE_RDMAWRITE 0x20
+#define WQE_OPTYPE_CMPSWAP 0x10
+#define WQE_OPTYPE_FETCHADD 0x08
+#define WQE_OPTYPE_BIND 0x04
+
+#define WQE_WRFLAG_REQ_SIGNAL_COM 0x80
+#define WQE_WRFLAG_FENCE 0x40
+#define WQE_WRFLAG_IMM_DATA_PRESENT 0x20
+#define WQE_WRFLAG_SOLIC_EVENT 0x10
+
+#define WQEF_CACHE_HINT 0x80
+#define WQEF_CACHE_HINT_RD_WR 0x40
+#define WQEF_TIMED_WQE 0x20
+#define WQEF_PURGE 0x08
+#define WQEF_HIGH_NIBBLE 0xF0
+
+#define MW_BIND_ACCESSCTRL_R_WRITE 0x40
+#define MW_BIND_ACCESSCTRL_R_READ 0x20
+#define MW_BIND_ACCESSCTRL_R_ATOMIC 0x10
+
+struct ehca_wqe {
+ u64 work_request_id;
+ u8 optype;
+ u8 wr_flag;
+ u16 pkeyi;
+ u8 wqef;
+ u8 nr_of_data_seg;
+ u16 wqe_provided_slid;
+ u32 destination_qp_number;
+ u32 resync_psn_sqp;
+ u32 local_ee_context_qkey;
+ u32 immediate_data;
+ union {
+ struct {
+ u64 remote_virtual_adress;
+ u32 rkey;
+ u32 reserved;
+ u64 atomic_1st_op_dma_len;
+ u64 atomic_2nd_op;
+ struct ehca_vsgentry sg_list[MAX_WQE_SG_ENTRIES];
+
+ } nud;
+ struct {
+ u64 ehca_ud_av_ptr;
+ u64 reserved1;
+ u64 reserved2;
+ u64 reserved3;
+ struct ehca_vsgentry sg_list[MAX_WQE_SG_ENTRIES];
+ } ud_avp;
+ struct {
+ struct ehca_ud_av ud_av;
+ struct ehca_vsgentry sg_list[MAX_WQE_SG_ENTRIES -
+ 2];
+ } ud_av;
+ struct {
+ u64 reserved0;
+ u64 reserved1;
+ u64 reserved2;
+ u64 reserved3;
+ struct ehca_vsgentry sg_list[MAX_WQE_SG_ENTRIES];
+ } all_rcv;
+
+ struct {
+ u64 reserved;
+ u32 rkey;
+ u32 old_rkey;
+ u64 reserved1;
+ u64 reserved2;
+ u64 virtual_address;
+ u32 reserved3;
+ u32 length;
+ u32 reserved4;
+ u16 reserved5;
+ u8 reserved6;
+ u8 lr_ctl;
+ u32 lkey;
+ u32 reserved7;
+ u64 reserved8;
+ u64 reserved9;
+ u64 reserved10;
+ u64 reserved11;
+ } bind;
+ struct {
+ u64 reserved12;
+ u64 reserved13;
+ u32 size;
+ u32 start;
+ } inline_data;
+ } u;
+
+};
+
+#define WC_SEND_RECEIVE EHCA_BMASK_IBM(0,0)
+#define WC_IMM_DATA EHCA_BMASK_IBM(1,1)
+#define WC_GRH_PRESENT EHCA_BMASK_IBM(2,2)
+#define WC_SE_BIT EHCA_BMASK_IBM(3,3)
+#define WC_STATUS_ERROR_BIT 0x80000000
+#define WC_STATUS_REMOTE_ERROR_FLAGS 0x0000F800
+#define WC_STATUS_PURGE_BIT 0x10
+
+struct ehca_cqe {
+ u64 work_request_id;
+ u8 optype;
+ u8 w_completion_flags;
+ u16 reserved1;
+ u32 nr_bytes_transferred;
+ u32 immediate_data;
+ u32 local_qp_number;
+ u8 freed_resource_count;
+ u8 service_level;
+ u16 wqe_count;
+ u32 qp_token;
+ u32 qkey_ee_token;
+ u32 remote_qp_number;
+ u16 dlid;
+ u16 rlid;
+ u16 reserved2;
+ u16 pkey_index;
+ u32 cqe_timestamp;
+ u32 wqe_timestamp;
+ u8 wqe_timestamp_valid;
+ u8 reserved3;
+ u8 reserved4;
+ u8 cqe_flags;
+ u32 status;
+};
+
+struct ehca_eqe {
+ u64 entry;
+};
+
+struct ehca_mrte {
+ u64 starting_va;
+ u64 length; /* length of memory region in bytes*/
+ u32 pd;
+ u8 key_instance;
+ u8 pagesize;
+ u8 mr_control;
+ u8 local_remote_access_ctrl;
+ u8 reserved[0x20 - 0x18];
+ u64 at_pointer[4];
+};
+#endif /*_EHCA_QES_H_*/
diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c b/drivers/infiniband/hw/ehca/ehca_qp.c
new file mode 100644
index 0000000..4b27bed
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_qp.c
@@ -0,0 +1,1506 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * QP functions
+ *
+ * Authors: Waleri Fomin <fomin@de.ibm.com>
+ * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ * Reinhard Ernst <rernst@de.ibm.com>
+ * Heiko J Schick <schickhj@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#include <asm/current.h>
+
+#include "ehca_classes.h"
+#include "ehca_tools.h"
+#include "ehca_qes.h"
+#include "ehca_iverbs.h"
+#include "hcp_if.h"
+#include "hipz_fns.h"
+
+static struct kmem_cache *qp_cache;
+
+/*
+ * attributes not supported by query qp
+ */
+#define QP_ATTR_QUERY_NOT_SUPPORTED (IB_QP_MAX_DEST_RD_ATOMIC | \
+ IB_QP_MAX_QP_RD_ATOMIC | \
+ IB_QP_ACCESS_FLAGS | \
+ IB_QP_EN_SQD_ASYNC_NOTIFY)
+
+/*
+ * ehca (internal) qp state values
+ */
+enum ehca_qp_state {
+ EHCA_QPS_RESET = 1,
+ EHCA_QPS_INIT = 2,
+ EHCA_QPS_RTR = 3,
+ EHCA_QPS_RTS = 5,
+ EHCA_QPS_SQD = 6,
+ EHCA_QPS_SQE = 8,
+ EHCA_QPS_ERR = 128
+};
+
+/*
+ * qp state transitions as defined by IB Arch Rel 1.1 page 431
+ */
+enum ib_qp_statetrans {
+ IB_QPST_ANY2RESET,
+ IB_QPST_ANY2ERR,
+ IB_QPST_RESET2INIT,
+ IB_QPST_INIT2RTR,
+ IB_QPST_INIT2INIT,
+ IB_QPST_RTR2RTS,
+ IB_QPST_RTS2SQD,
+ IB_QPST_RTS2RTS,
+ IB_QPST_SQD2RTS,
+ IB_QPST_SQE2RTS,
+ IB_QPST_SQD2SQD,
+ IB_QPST_MAX /* nr of transitions, this must be last!!! */
+};
+
+/*
+ * ib2ehca_qp_state maps IB to ehca qp_state
+ * returns ehca qp state corresponding to given ib qp state
+ */
+static inline enum ehca_qp_state ib2ehca_qp_state(enum ib_qp_state ib_qp_state)
+{
+ switch (ib_qp_state) {
+ case IB_QPS_RESET:
+ return EHCA_QPS_RESET;
+ case IB_QPS_INIT:
+ return EHCA_QPS_INIT;
+ case IB_QPS_RTR:
+ return EHCA_QPS_RTR;
+ case IB_QPS_RTS:
+ return EHCA_QPS_RTS;
+ case IB_QPS_SQD:
+ return EHCA_QPS_SQD;
+ case IB_QPS_SQE:
+ return EHCA_QPS_SQE;
+ case IB_QPS_ERR:
+ return EHCA_QPS_ERR;
+ default:
+ ehca_gen_err("invalid ib_qp_state=%x", ib_qp_state);
+ return -EINVAL;
+ }
+}
+
+/*
+ * ehca2ib_qp_state maps ehca to IB qp_state
+ * returns ib qp state corresponding to given ehca qp state
+ */
+static inline enum ib_qp_state ehca2ib_qp_state(enum ehca_qp_state
+ ehca_qp_state)
+{
+ switch (ehca_qp_state) {
+ case EHCA_QPS_RESET:
+ return IB_QPS_RESET;
+ case EHCA_QPS_INIT:
+ return IB_QPS_INIT;
+ case EHCA_QPS_RTR:
+ return IB_QPS_RTR;
+ case EHCA_QPS_RTS:
+ return IB_QPS_RTS;
+ case EHCA_QPS_SQD:
+ return IB_QPS_SQD;
+ case EHCA_QPS_SQE:
+ return IB_QPS_SQE;
+ case EHCA_QPS_ERR:
+ return IB_QPS_ERR;
+ default:
+ ehca_gen_err("invalid ehca_qp_state=%x", ehca_qp_state);
+ return -EINVAL;
+ }
+}
+
+/*
+ * ehca_qp_type used as index for req_attr and opt_attr of
+ * struct ehca_modqp_statetrans
+ */
+enum ehca_qp_type {
+ QPT_RC = 0,
+ QPT_UC = 1,
+ QPT_UD = 2,
+ QPT_SQP = 3,
+ QPT_MAX
+};
+
+/*
+ * ib2ehcaqptype maps Ib to ehca qp_type
+ * returns ehca qp type corresponding to ib qp type
+ */
+static inline enum ehca_qp_type ib2ehcaqptype(enum ib_qp_type ibqptype)
+{
+ switch (ibqptype) {
+ case IB_QPT_SMI:
+ case IB_QPT_GSI:
+ return QPT_SQP;
+ case IB_QPT_RC:
+ return QPT_RC;
+ case IB_QPT_UC:
+ return QPT_UC;
+ case IB_QPT_UD:
+ return QPT_UD;
+ default:
+ ehca_gen_err("Invalid ibqptype=%x", ibqptype);
+ return -EINVAL;
+ }
+}
+
+static inline enum ib_qp_statetrans get_modqp_statetrans(int ib_fromstate,
+ int ib_tostate)
+{
+ int index = -EINVAL;
+ switch (ib_tostate) {
+ case IB_QPS_RESET:
+ index = IB_QPST_ANY2RESET;
+ break;
+ case IB_QPS_INIT:
+ switch (ib_fromstate) {
+ case IB_QPS_RESET:
+ index = IB_QPST_RESET2INIT;
+ break;
+ case IB_QPS_INIT:
+ index = IB_QPST_INIT2INIT;
+ break;
+ }
+ break;
+ case IB_QPS_RTR:
+ if (ib_fromstate == IB_QPS_INIT)
+ index = IB_QPST_INIT2RTR;
+ break;
+ case IB_QPS_RTS:
+ switch (ib_fromstate) {
+ case IB_QPS_RTR:
+ index = IB_QPST_RTR2RTS;
+ break;
+ case IB_QPS_RTS:
+ index = IB_QPST_RTS2RTS;
+ break;
+ case IB_QPS_SQD:
+ index = IB_QPST_SQD2RTS;
+ break;
+ case IB_QPS_SQE:
+ index = IB_QPST_SQE2RTS;
+ break;
+ }
+ break;
+ case IB_QPS_SQD:
+ if (ib_fromstate == IB_QPS_RTS)
+ index = IB_QPST_RTS2SQD;
+ break;
+ case IB_QPS_SQE:
+ break;
+ case IB_QPS_ERR:
+ index = IB_QPST_ANY2ERR;
+ break;
+ default:
+ break;
+ }
+ return index;
+}
+
+enum ehca_service_type {
+ ST_RC = 0,
+ ST_UC = 1,
+ ST_RD = 2,
+ ST_UD = 3
+};
+
+/*
+ * ibqptype2servicetype returns hcp service type corresponding to given
+ * ib qp type used by create_qp()
+ */
+static inline int ibqptype2servicetype(enum ib_qp_type ibqptype)
+{
+ switch (ibqptype) {
+ case IB_QPT_SMI:
+ case IB_QPT_GSI:
+ return ST_UD;
+ case IB_QPT_RC:
+ return ST_RC;
+ case IB_QPT_UC:
+ return ST_UC;
+ case IB_QPT_UD:
+ return ST_UD;
+ case IB_QPT_RAW_IPV6:
+ return -EINVAL;
+ case IB_QPT_RAW_ETY:
+ return -EINVAL;
+ default:
+ ehca_gen_err("Invalid ibqptype=%x", ibqptype);
+ return -EINVAL;
+ }
+}
+
+/*
+ * init_qp_queues initializes/constructs r/squeue and registers queue pages.
+ */
+static inline int init_qp_queues(struct ehca_shca *shca,
+ struct ehca_qp *my_qp,
+ int nr_sq_pages,
+ int nr_rq_pages,
+ int swqe_size,
+ int rwqe_size,
+ int nr_send_sges, int nr_receive_sges)
+{
+ int ret, cnt, ipz_rc;
+ void *vpage;
+ u64 rpage, h_ret;
+ struct ib_device *ib_dev = &shca->ib_device;
+ struct ipz_adapter_handle ipz_hca_handle = shca->ipz_hca_handle;
+
+ ipz_rc = ipz_queue_ctor(&my_qp->ipz_squeue,
+ nr_sq_pages,
+ EHCA_PAGESIZE, swqe_size, nr_send_sges);
+ if (!ipz_rc) {
+ ehca_err(ib_dev,"Cannot allocate page for squeue. ipz_rc=%x",
+ ipz_rc);
+ return -EBUSY;
+ }
+
+ ipz_rc = ipz_queue_ctor(&my_qp->ipz_rqueue,
+ nr_rq_pages,
+ EHCA_PAGESIZE, rwqe_size, nr_receive_sges);
+ if (!ipz_rc) {
+ ehca_err(ib_dev, "Cannot allocate page for rqueue. ipz_rc=%x",
+ ipz_rc);
+ ret = -EBUSY;
+ goto init_qp_queues0;
+ }
+ /* register SQ pages */
+ for (cnt = 0; cnt < nr_sq_pages; cnt++) {
+ vpage = ipz_qpageit_get_inc(&my_qp->ipz_squeue);
+ if (!vpage) {
+ ehca_err(ib_dev, "SQ ipz_qpageit_get_inc() "
+ "failed p_vpage= %p", vpage);
+ ret = -EINVAL;
+ goto init_qp_queues1;
+ }
+ rpage = virt_to_abs(vpage);
+
+ h_ret = hipz_h_register_rpage_qp(ipz_hca_handle,
+ my_qp->ipz_qp_handle,
+ &my_qp->pf, 0, 0,
+ rpage, 1,
+ my_qp->galpas.kernel);
+ if (h_ret < H_SUCCESS) {
+ ehca_err(ib_dev, "SQ hipz_qp_register_rpage()"
+ " failed rc=%lx", h_ret);
+ ret = ehca2ib_return_code(h_ret);
+ goto init_qp_queues1;
+ }
+ }
+
+ ipz_qeit_reset(&my_qp->ipz_squeue);
+
+ /* register RQ pages */
+ for (cnt = 0; cnt < nr_rq_pages; cnt++) {
+ vpage = ipz_qpageit_get_inc(&my_qp->ipz_rqueue);
+ if (!vpage) {
+ ehca_err(ib_dev, "RQ ipz_qpageit_get_inc() "
+ "failed p_vpage = %p", vpage);
+ ret = -EINVAL;
+ goto init_qp_queues1;
+ }
+
+ rpage = virt_to_abs(vpage);
+
+ h_ret = hipz_h_register_rpage_qp(ipz_hca_handle,
+ my_qp->ipz_qp_handle,
+ &my_qp->pf, 0, 1,
+ rpage, 1,my_qp->galpas.kernel);
+ if (h_ret < H_SUCCESS) {
+ ehca_err(ib_dev, "RQ hipz_qp_register_rpage() failed "
+ "rc=%lx", h_ret);
+ ret = ehca2ib_return_code(h_ret);
+ goto init_qp_queues1;
+ }
+ if (cnt == (nr_rq_pages - 1)) { /* last page! */
+ if (h_ret != H_SUCCESS) {
+ ehca_err(ib_dev, "RQ hipz_qp_register_rpage() "
+ "h_ret= %lx ", h_ret);
+ ret = ehca2ib_return_code(h_ret);
+ goto init_qp_queues1;
+ }
+ vpage = ipz_qpageit_get_inc(&my_qp->ipz_rqueue);
+ if (vpage) {
+ ehca_err(ib_dev, "ipz_qpageit_get_inc() "
+ "should not succeed vpage=%p", vpage);
+ ret = -EINVAL;
+ goto init_qp_queues1;
+ }
+ } else {
+ if (h_ret != H_PAGE_REGISTERED) {
+ ehca_err(ib_dev, "RQ hipz_qp_register_rpage() "
+ "h_ret= %lx ", h_ret);
+ ret = ehca2ib_return_code(h_ret);
+ goto init_qp_queues1;
+ }
+ }
+ }
+
+ ipz_qeit_reset(&my_qp->ipz_rqueue);
+
+ return 0;
+
+init_qp_queues1:
+ ipz_queue_dtor(&my_qp->ipz_rqueue);
+init_qp_queues0:
+ ipz_queue_dtor(&my_qp->ipz_squeue);
+ return ret;
+}
+
+struct ib_qp *ehca_create_qp(struct ib_pd *pd,
+ struct ib_qp_init_attr *init_attr,
+ struct ib_udata *udata)
+{
+ static int da_rc_msg_size[]={ 128, 256, 512, 1024, 2048, 4096 };
+ static int da_ud_sq_msg_size[]={ 128, 384, 896, 1920, 3968 };
+ struct ehca_qp *my_qp;
+ struct ehca_pd *my_pd = container_of(pd, struct ehca_pd, ib_pd);
+ struct ehca_shca *shca = container_of(pd->device, struct ehca_shca,
+ ib_device);
+ struct ib_ucontext *context = NULL;
+ u64 h_ret;
+ int max_send_sge, max_recv_sge, ret;
+
+ /* h_call's out parameters */
+ struct ehca_alloc_qp_parms parms;
+ u32 swqe_size = 0, rwqe_size = 0;
+ u8 daqp_completion, isdaqp;
+ unsigned long flags;
+
+ if (init_attr->sq_sig_type != IB_SIGNAL_REQ_WR &&
+ init_attr->sq_sig_type != IB_SIGNAL_ALL_WR) {
+ ehca_err(pd->device, "init_attr->sg_sig_type=%x not allowed",
+ init_attr->sq_sig_type);
+ return ERR_PTR(-EINVAL);
+ }
+
+ /* save daqp completion bits */
+ daqp_completion = init_attr->qp_type & 0x60;
+ /* save daqp bit */
+ isdaqp = (init_attr->qp_type & 0x80) ? 1 : 0;
+ init_attr->qp_type = init_attr->qp_type & 0x1F;
+
+ if (init_attr->qp_type != IB_QPT_UD &&
+ init_attr->qp_type != IB_QPT_SMI &&
+ init_attr->qp_type != IB_QPT_GSI &&
+ init_attr->qp_type != IB_QPT_UC &&
+ init_attr->qp_type != IB_QPT_RC) {
+ ehca_err(pd->device, "wrong QP Type=%x", init_attr->qp_type);
+ return ERR_PTR(-EINVAL);
+ }
+ if ((init_attr->qp_type != IB_QPT_RC && init_attr->qp_type != IB_QPT_UD)
+ && isdaqp) {
+ ehca_err(pd->device, "unsupported LL QP Type=%x",
+ init_attr->qp_type);
+ return ERR_PTR(-EINVAL);
+ } else if (init_attr->qp_type == IB_QPT_RC && isdaqp &&
+ (init_attr->cap.max_send_wr > 255 ||
+ init_attr->cap.max_recv_wr > 255 )) {
+ ehca_err(pd->device, "Invalid Number of max_sq_wr =%x "
+ "or max_rq_wr=%x for QP Type=%x",
+ init_attr->cap.max_send_wr,
+ init_attr->cap.max_recv_wr,init_attr->qp_type);
+ return ERR_PTR(-EINVAL);
+ } else if (init_attr->qp_type == IB_QPT_UD && isdaqp &&
+ init_attr->cap.max_send_wr > 255) {
+ ehca_err(pd->device,
+ "Invalid Number of max_send_wr=%x for UD QP_TYPE=%x",
+ init_attr->cap.max_send_wr, init_attr->qp_type);
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (pd->uobject && udata)
+ context = pd->uobject->context;
+
+ my_qp = kmem_cache_alloc(qp_cache, SLAB_KERNEL);
+ if (!my_qp) {
+ ehca_err(pd->device, "pd=%p not enough memory to alloc qp", pd);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ memset(my_qp, 0, sizeof(struct ehca_qp));
+ memset (&parms, 0, sizeof(struct ehca_alloc_qp_parms));
+ spin_lock_init(&my_qp->spinlock_s);
+ spin_lock_init(&my_qp->spinlock_r);
+
+ my_qp->recv_cq =
+ container_of(init_attr->recv_cq, struct ehca_cq, ib_cq);
+ my_qp->send_cq =
+ container_of(init_attr->send_cq, struct ehca_cq, ib_cq);
+
+ my_qp->init_attr = *init_attr;
+
+ do {
+ if (!idr_pre_get(&ehca_qp_idr, GFP_KERNEL)) {
+ ret = -ENOMEM;
+ ehca_err(pd->device, "Can't reserve idr resources.");
+ goto create_qp_exit0;
+ }
+
+ spin_lock_irqsave(&ehca_qp_idr_lock, flags);
+ ret = idr_get_new(&ehca_qp_idr, my_qp, &my_qp->token);
+ spin_unlock_irqrestore(&ehca_qp_idr_lock, flags);
+
+ } while (ret == -EAGAIN);
+
+ if (ret) {
+ ret = -ENOMEM;
+ ehca_err(pd->device, "Can't allocate new idr entry.");
+ goto create_qp_exit0;
+ }
+
+ parms.servicetype = ibqptype2servicetype(init_attr->qp_type);
+ if (parms.servicetype < 0) {
+ ret = -EINVAL;
+ ehca_err(pd->device, "Invalid qp_type=%x", init_attr->qp_type);
+ goto create_qp_exit0;
+ }
+
+ if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
+ parms.sigtype = HCALL_SIGT_EVERY;
+ else
+ parms.sigtype = HCALL_SIGT_BY_WQE;
+
+ /* UD_AV CIRCUMVENTION */
+ max_send_sge = init_attr->cap.max_send_sge;
+ max_recv_sge = init_attr->cap.max_recv_sge;
+ if (IB_QPT_UD == init_attr->qp_type ||
+ IB_QPT_GSI == init_attr->qp_type ||
+ IB_QPT_SMI == init_attr->qp_type) {
+ max_send_sge += 2;
+ max_recv_sge += 2;
+ }
+
+ parms.ipz_eq_handle = shca->eq.ipz_eq_handle;
+ parms.daqp_ctrl = isdaqp | daqp_completion;
+ parms.pd = my_pd->fw_pd;
+ parms.max_recv_sge = max_recv_sge;
+ parms.max_send_sge = max_send_sge;
+
+ h_ret = hipz_h_alloc_resource_qp(shca->ipz_hca_handle, my_qp, &parms);
+
+ if (h_ret != H_SUCCESS) {
+ ehca_err(pd->device, "h_alloc_resource_qp() failed h_ret=%lx",
+ h_ret);
+ ret = ehca2ib_return_code(h_ret);
+ goto create_qp_exit1;
+ }
+
+ switch (init_attr->qp_type) {
+ case IB_QPT_RC:
+ if (isdaqp == 0) {
+ swqe_size = offsetof(struct ehca_wqe, u.nud.sg_list[
+ (parms.act_nr_send_sges)]);
+ rwqe_size = offsetof(struct ehca_wqe, u.nud.sg_list[
+ (parms.act_nr_recv_sges)]);
+ } else { /* for daqp we need to use msg size, not wqe size */
+ swqe_size = da_rc_msg_size[max_send_sge];
+ rwqe_size = da_rc_msg_size[max_recv_sge];
+ parms.act_nr_send_sges = 1;
+ parms.act_nr_recv_sges = 1;
+ }
+ break;
+ case IB_QPT_UC:
+ swqe_size = offsetof(struct ehca_wqe,
+ u.nud.sg_list[parms.act_nr_send_sges]);
+ rwqe_size = offsetof(struct ehca_wqe,
+ u.nud.sg_list[parms.act_nr_recv_sges]);
+ break;
+
+ case IB_QPT_UD:
+ case IB_QPT_GSI:
+ case IB_QPT_SMI:
+ /* UD circumvention */
+ parms.act_nr_recv_sges -= 2;
+ parms.act_nr_send_sges -= 2;
+ if (isdaqp) {
+ swqe_size = da_ud_sq_msg_size[max_send_sge];
+ rwqe_size = da_rc_msg_size[max_recv_sge];
+ parms.act_nr_send_sges = 1;
+ parms.act_nr_recv_sges = 1;
+ } else {
+ swqe_size = offsetof(struct ehca_wqe,
+ u.ud_av.sg_list[parms.act_nr_send_sges]);
+ rwqe_size = offsetof(struct ehca_wqe,
+ u.ud_av.sg_list[parms.act_nr_recv_sges]);
+ }
+
+ if (IB_QPT_GSI == init_attr->qp_type ||
+ IB_QPT_SMI == init_attr->qp_type) {
+ parms.act_nr_send_wqes = init_attr->cap.max_send_wr;
+ parms.act_nr_recv_wqes = init_attr->cap.max_recv_wr;
+ parms.act_nr_send_sges = init_attr->cap.max_send_sge;
+ parms.act_nr_recv_sges = init_attr->cap.max_recv_sge;
+ my_qp->real_qp_num =
+ (init_attr->qp_type == IB_QPT_SMI) ? 0 : 1;
+ }
+
+ break;
+
+ default:
+ break;
+ }
+
+ /* initializes r/squeue and registers queue pages */
+ ret = init_qp_queues(shca, my_qp,
+ parms.nr_sq_pages, parms.nr_rq_pages,
+ swqe_size, rwqe_size,
+ parms.act_nr_send_sges, parms.act_nr_recv_sges);
+ if (ret) {
+ ehca_err(pd->device,
+ "Couldn't initialize r/squeue and pages ret=%x", ret);
+ goto create_qp_exit2;
+ }
+
+ my_qp->ib_qp.pd = &my_pd->ib_pd;
+ my_qp->ib_qp.device = my_pd->ib_pd.device;
+
+ my_qp->ib_qp.recv_cq = init_attr->recv_cq;
+ my_qp->ib_qp.send_cq = init_attr->send_cq;
+
+ my_qp->ib_qp.qp_num = my_qp->real_qp_num;
+ my_qp->ib_qp.qp_type = init_attr->qp_type;
+
+ my_qp->qp_type = init_attr->qp_type;
+ my_qp->ib_qp.srq = init_attr->srq;
+
+ my_qp->ib_qp.qp_context = init_attr->qp_context;
+ my_qp->ib_qp.event_handler = init_attr->event_handler;
+
+ init_attr->cap.max_inline_data = 0; /* not supported yet */
+ init_attr->cap.max_recv_sge = parms.act_nr_recv_sges;
+ init_attr->cap.max_recv_wr = parms.act_nr_recv_wqes;
+ init_attr->cap.max_send_sge = parms.act_nr_send_sges;
+ init_attr->cap.max_send_wr = parms.act_nr_send_wqes;
+
+ /* NOTE: define_apq0() not supported yet */
+ if (init_attr->qp_type == IB_QPT_GSI) {
+ h_ret = ehca_define_sqp(shca, my_qp, init_attr);
+ if (h_ret != H_SUCCESS) {
+ ehca_err(pd->device, "ehca_define_sqp() failed rc=%lx",
+ h_ret);
+ ret = ehca2ib_return_code(h_ret);
+ goto create_qp_exit3;
+ }
+ }
+ if (init_attr->send_cq) {
+ struct ehca_cq *cq = container_of(init_attr->send_cq,
+ struct ehca_cq, ib_cq);
+ ret = ehca_cq_assign_qp(cq, my_qp);
+ if (ret) {
+ ehca_err(pd->device, "Couldn't assign qp to send_cq ret=%x",
+ ret);
+ goto create_qp_exit3;
+ }
+ my_qp->send_cq = cq;
+ }
+ /* copy queues, galpa data to user space */
+ if (context && udata) {
+ struct ipz_queue *ipz_rqueue = &my_qp->ipz_rqueue;
+ struct ipz_queue *ipz_squeue = &my_qp->ipz_squeue;
+ struct ehca_create_qp_resp resp;
+ struct vm_area_struct * vma;
+ memset(&resp, 0, sizeof(resp));
+
+ resp.qp_num = my_qp->real_qp_num;
+ resp.token = my_qp->token;
+ resp.qp_type = my_qp->qp_type;
+ resp.qkey = my_qp->qkey;
+ resp.real_qp_num = my_qp->real_qp_num;
+ /* rqueue properties */
+ resp.ipz_rqueue.qe_size = ipz_rqueue->qe_size;
+ resp.ipz_rqueue.act_nr_of_sg = ipz_rqueue->act_nr_of_sg;
+ resp.ipz_rqueue.queue_length = ipz_rqueue->queue_length;
+ resp.ipz_rqueue.pagesize = ipz_rqueue->pagesize;
+ resp.ipz_rqueue.toggle_state = ipz_rqueue->toggle_state;
+ ret = ehca_mmap_nopage(((u64)(my_qp->token) << 32) | 0x22000000,
+ ipz_rqueue->queue_length,
+ (void**)&resp.ipz_rqueue.queue,
+ &vma);
+ if (ret) {
+ ehca_err(pd->device, "Could not mmap rqueue pages");
+ goto create_qp_exit3;
+ }
+ my_qp->uspace_rqueue = resp.ipz_rqueue.queue;
+ /* squeue properties */
+ resp.ipz_squeue.qe_size = ipz_squeue->qe_size;
+ resp.ipz_squeue.act_nr_of_sg = ipz_squeue->act_nr_of_sg;
+ resp.ipz_squeue.queue_length = ipz_squeue->queue_length;
+ resp.ipz_squeue.pagesize = ipz_squeue->pagesize;
+ resp.ipz_squeue.toggle_state = ipz_squeue->toggle_state;
+ ret = ehca_mmap_nopage(((u64)(my_qp->token) << 32) | 0x23000000,
+ ipz_squeue->queue_length,
+ (void**)&resp.ipz_squeue.queue,
+ &vma);
+ if (ret) {
+ ehca_err(pd->device, "Could not mmap squeue pages");
+ goto create_qp_exit4;
+ }
+ my_qp->uspace_squeue = resp.ipz_squeue.queue;
+ /* fw_handle */
+ resp.galpas = my_qp->galpas;
+ ret = ehca_mmap_register(my_qp->galpas.user.fw_handle,
+ (void**)&resp.galpas.kernel.fw_handle,
+ &vma);
+ if (ret) {
+ ehca_err(pd->device, "Could not mmap fw_handle");
+ goto create_qp_exit5;
+ }
+ my_qp->uspace_fwh = (u64)resp.galpas.kernel.fw_handle;
+
+ if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
+ ehca_err(pd->device, "Copy to udata failed");
+ ret = -EINVAL;
+ goto create_qp_exit6;
+ }
+ }
+
+ return &my_qp->ib_qp;
+
+create_qp_exit6:
+ ehca_munmap(my_qp->uspace_fwh, EHCA_PAGESIZE);
+
+create_qp_exit5:
+ ehca_munmap(my_qp->uspace_squeue, my_qp->ipz_squeue.queue_length);
+
+create_qp_exit4:
+ ehca_munmap(my_qp->uspace_rqueue, my_qp->ipz_rqueue.queue_length);
+
+create_qp_exit3:
+ ipz_queue_dtor(&my_qp->ipz_rqueue);
+ ipz_queue_dtor(&my_qp->ipz_squeue);
+
+create_qp_exit2:
+ hipz_h_destroy_qp(shca->ipz_hca_handle, my_qp);
+
+create_qp_exit1:
+ spin_lock_irqsave(&ehca_qp_idr_lock, flags);
+ idr_remove(&ehca_qp_idr, my_qp->token);
+ spin_unlock_irqrestore(&ehca_qp_idr_lock, flags);
+
+create_qp_exit0:
+ kmem_cache_free(qp_cache, my_qp);
+ return ERR_PTR(ret);
+}
+
+/*
+ * prepare_sqe_rts called by internal_modify_qp() at trans sqe -> rts
+ * set purge bit of bad wqe and subsequent wqes to avoid reentering sqe
+ * returns total number of bad wqes in bad_wqe_cnt
+ */
+static int prepare_sqe_rts(struct ehca_qp *my_qp, struct ehca_shca *shca,
+ int *bad_wqe_cnt)
+{
+ u64 h_ret;
+ struct ipz_queue *squeue;
+ void *bad_send_wqe_p, *bad_send_wqe_v;
+ void *squeue_start_p, *squeue_end_p;
+ void *squeue_start_v, *squeue_end_v;
+ struct ehca_wqe *wqe;
+ int qp_num = my_qp->ib_qp.qp_num;
+
+ /* get send wqe pointer */
+ h_ret = hipz_h_disable_and_get_wqe(shca->ipz_hca_handle,
+ my_qp->ipz_qp_handle, &my_qp->pf,
+ &bad_send_wqe_p, NULL, 2);
+ if (h_ret != H_SUCCESS) {
+ ehca_err(&shca->ib_device, "hipz_h_disable_and_get_wqe() failed"
+ " ehca_qp=%p qp_num=%x h_ret=%lx",
+ my_qp, qp_num, h_ret);
+ return ehca2ib_return_code(h_ret);
+ }
+ bad_send_wqe_p = (void*)((u64)bad_send_wqe_p & (~(1L<<63)));
+ ehca_dbg(&shca->ib_device, "qp_num=%x bad_send_wqe_p=%p",
+ qp_num, bad_send_wqe_p);
+ /* convert wqe pointer to vadr */
+ bad_send_wqe_v = abs_to_virt((u64)bad_send_wqe_p);
+ if (ehca_debug_level)
+ ehca_dmp(bad_send_wqe_v, 32, "qp_num=%x bad_wqe", qp_num);
+ squeue = &my_qp->ipz_squeue;
+ squeue_start_p = (void*)virt_to_abs(ipz_qeit_calc(squeue, 0L));
+ squeue_end_p = squeue_start_p+squeue->queue_length;
+ squeue_start_v = abs_to_virt((u64)squeue_start_p);
+ squeue_end_v = abs_to_virt((u64)squeue_end_p);
+ ehca_dbg(&shca->ib_device, "qp_num=%x squeue_start_v=%p squeue_end_v=%p",
+ qp_num, squeue_start_v, squeue_end_v);
+
+ /* loop sets wqe's purge bit */
+ wqe = (struct ehca_wqe*)bad_send_wqe_v;
+ *bad_wqe_cnt = 0;
+ while (wqe->optype != 0xff && wqe->wqef != 0xff) {
+ if (ehca_debug_level)
+ ehca_dmp(wqe, 32, "qp_num=%x wqe", qp_num);
+ wqe->nr_of_data_seg = 0; /* suppress data access */
+ wqe->wqef = WQEF_PURGE; /* WQE to be purged */
+ wqe = (struct ehca_wqe*)((u8*)wqe+squeue->qe_size);
+ *bad_wqe_cnt = (*bad_wqe_cnt)+1;
+ if ((void*)wqe >= squeue_end_v) {
+ wqe = squeue_start_v;
+ }
+ }
+ /*
+ * bad wqe will be reprocessed and ignored when pol_cq() is called,
+ * i.e. nr of wqes with flush error status is one less
+ */
+ ehca_dbg(&shca->ib_device, "qp_num=%x flusherr_wqe_cnt=%x",
+ qp_num, (*bad_wqe_cnt)-1);
+ wqe->wqef = 0;
+
+ return 0;
+}
+
+/*
+ * internal_modify_qp with circumvention to handle aqp0 properly
+ * smi_reset2init indicates if this is an internal reset-to-init-call for
+ * smi. This flag must always be zero if called from ehca_modify_qp()!
+ * This internal func was intorduced to avoid recursion of ehca_modify_qp()!
+ */
+static int internal_modify_qp(struct ib_qp *ibqp,
+ struct ib_qp_attr *attr,
+ int attr_mask, int smi_reset2init)
+{
+ enum ib_qp_state qp_cur_state, qp_new_state;
+ int cnt, qp_attr_idx, ret = 0;
+ enum ib_qp_statetrans statetrans;
+ struct hcp_modify_qp_control_block *mqpcb;
+ struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp);
+ struct ehca_shca *shca =
+ container_of(ibqp->pd->device, struct ehca_shca, ib_device);
+ u64 update_mask;
+ u64 h_ret;
+ int bad_wqe_cnt = 0;
+ int squeue_locked = 0;
+ unsigned long spl_flags = 0;
+
+ /* do query_qp to obtain current attr values */
+ mqpcb = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
+ if (mqpcb == NULL) {
+ ehca_err(ibqp->device, "Could not get zeroed page for mqpcb "
+ "ehca_qp=%p qp_num=%x ", my_qp, ibqp->qp_num);
+ return -ENOMEM;
+ }
+
+ h_ret = hipz_h_query_qp(shca->ipz_hca_handle,
+ my_qp->ipz_qp_handle,
+ &my_qp->pf,
+ mqpcb, my_qp->galpas.kernel);
+ if (h_ret != H_SUCCESS) {
+ ehca_err(ibqp->device, "hipz_h_query_qp() failed "
+ "ehca_qp=%p qp_num=%x h_ret=%lx",
+ my_qp, ibqp->qp_num, h_ret);
+ ret = ehca2ib_return_code(h_ret);
+ goto modify_qp_exit1;
+ }
+
+ qp_cur_state = ehca2ib_qp_state(mqpcb->qp_state);
+
+ if (qp_cur_state == -EINVAL) { /* invalid qp state */
+ ret = -EINVAL;
+ ehca_err(ibqp->device, "Invalid current ehca_qp_state=%x "
+ "ehca_qp=%p qp_num=%x",
+ mqpcb->qp_state, my_qp, ibqp->qp_num);
+ goto modify_qp_exit1;
+ }
+ /*
+ * circumvention to set aqp0 initial state to init
+ * as expected by IB spec
+ */
+ if (smi_reset2init == 0 &&
+ ibqp->qp_type == IB_QPT_SMI &&
+ qp_cur_state == IB_QPS_RESET &&
+ (attr_mask & IB_QP_STATE) &&
+ attr->qp_state == IB_QPS_INIT) { /* RESET -> INIT */
+ struct ib_qp_attr smiqp_attr = {
+ .qp_state = IB_QPS_INIT,
+ .port_num = my_qp->init_attr.port_num,
+ .pkey_index = 0,
+ .qkey = 0
+ };
+ int smiqp_attr_mask = IB_QP_STATE | IB_QP_PORT |
+ IB_QP_PKEY_INDEX | IB_QP_QKEY;
+ int smirc = internal_modify_qp(
+ ibqp, &smiqp_attr, smiqp_attr_mask, 1);
+ if (smirc) {
+ ehca_err(ibqp->device, "SMI RESET -> INIT failed. "
+ "ehca_modify_qp() rc=%x", smirc);
+ ret = H_PARAMETER;
+ goto modify_qp_exit1;
+ }
+ qp_cur_state = IB_QPS_INIT;
+ ehca_dbg(ibqp->device, "SMI RESET -> INIT succeeded");
+ }
+ /* is transmitted current state equal to "real" current state */
+ if ((attr_mask & IB_QP_CUR_STATE) &&
+ qp_cur_state != attr->cur_qp_state) {
+ ret = -EINVAL;
+ ehca_err(ibqp->device,
+ "Invalid IB_QP_CUR_STATE attr->curr_qp_state=%x <>"
+ " actual cur_qp_state=%x. ehca_qp=%p qp_num=%x",
+ attr->cur_qp_state, qp_cur_state, my_qp, ibqp->qp_num);
+ goto modify_qp_exit1;
+ }
+
+ ehca_dbg(ibqp->device,"ehca_qp=%p qp_num=%x current qp_state=%x "
+ "new qp_state=%x attribute_mask=%x",
+ my_qp, ibqp->qp_num, qp_cur_state, attr->qp_state, attr_mask);
+
+ qp_new_state = attr_mask & IB_QP_STATE ? attr->qp_state : qp_cur_state;
+ if (!smi_reset2init &&
+ !ib_modify_qp_is_ok(qp_cur_state, qp_new_state, ibqp->qp_type,
+ attr_mask)) {
+ ret = -EINVAL;
+ ehca_err(ibqp->device,
+ "Invalid qp transition new_state=%x cur_state=%x "
+ "ehca_qp=%p qp_num=%x attr_mask=%x", qp_new_state,
+ qp_cur_state, my_qp, ibqp->qp_num, attr_mask);
+ goto modify_qp_exit1;
+ }
+
+ if ((mqpcb->qp_state = ib2ehca_qp_state(qp_new_state)))
+ update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_STATE, 1);
+ else {
+ ret = -EINVAL;
+ ehca_err(ibqp->device, "Invalid new qp state=%x "
+ "ehca_qp=%p qp_num=%x",
+ qp_new_state, my_qp, ibqp->qp_num);
+ goto modify_qp_exit1;
+ }
+
+ /* retrieve state transition struct to get req and opt attrs */
+ statetrans = get_modqp_statetrans(qp_cur_state, qp_new_state);
+ if (statetrans < 0) {
+ ret = -EINVAL;
+ ehca_err(ibqp->device, "<INVALID STATE CHANGE> qp_cur_state=%x "
+ "new_qp_state=%x State_xsition=%x ehca_qp=%p "
+ "qp_num=%x", qp_cur_state, qp_new_state,
+ statetrans, my_qp, ibqp->qp_num);
+ goto modify_qp_exit1;
+ }
+
+ qp_attr_idx = ib2ehcaqptype(ibqp->qp_type);
+
+ if (qp_attr_idx < 0) {
+ ret = qp_attr_idx;
+ ehca_err(ibqp->device,
+ "Invalid QP type=%x ehca_qp=%p qp_num=%x",
+ ibqp->qp_type, my_qp, ibqp->qp_num);
+ goto modify_qp_exit1;
+ }
+
+ ehca_dbg(ibqp->device,
+ "ehca_qp=%p qp_num=%x <VALID STATE CHANGE> qp_state_xsit=%x",
+ my_qp, ibqp->qp_num, statetrans);
+
+ /* sqe -> rts: set purge bit of bad wqe before actual trans */
+ if ((my_qp->qp_type == IB_QPT_UD ||
+ my_qp->qp_type == IB_QPT_GSI ||
+ my_qp->qp_type == IB_QPT_SMI) &&
+ statetrans == IB_QPST_SQE2RTS) {
+ /* mark next free wqe if kernel */
+ if (my_qp->uspace_squeue == 0) {
+ struct ehca_wqe *wqe;
+ /* lock send queue */
+ spin_lock_irqsave(&my_qp->spinlock_s, spl_flags);
+ squeue_locked = 1;
+ /* mark next free wqe */
+ wqe = (struct ehca_wqe*)
+ ipz_qeit_get(&my_qp->ipz_squeue);
+ wqe->optype = wqe->wqef = 0xff;
+ ehca_dbg(ibqp->device, "qp_num=%x next_free_wqe=%p",
+ ibqp->qp_num, wqe);
+ }
+ ret = prepare_sqe_rts(my_qp, shca, &bad_wqe_cnt);
+ if (ret) {
+ ehca_err(ibqp->device, "prepare_sqe_rts() failed "
+ "ehca_qp=%p qp_num=%x ret=%x",
+ my_qp, ibqp->qp_num, ret);
+ goto modify_qp_exit2;
+ }
+ }
+
+ /*
+ * enable RDMA_Atomic_Control if reset->init und reliable con
+ * this is necessary since gen2 does not provide that flag,
+ * but pHyp requires it
+ */
+ if (statetrans == IB_QPST_RESET2INIT &&
+ (ibqp->qp_type == IB_QPT_RC || ibqp->qp_type == IB_QPT_UC)) {
+ mqpcb->rdma_atomic_ctrl = 3;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RDMA_ATOMIC_CTRL, 1);
+ }
+ /* circ. pHyp requires #RDMA/Atomic Resp Res for UC INIT -> RTR */
+ if (statetrans == IB_QPST_INIT2RTR &&
+ (ibqp->qp_type == IB_QPT_UC) &&
+ !(attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)) {
+ mqpcb->rdma_nr_atomic_resp_res = 1; /* default to 1 */
+ update_mask |=
+ EHCA_BMASK_SET(MQPCB_MASK_RDMA_NR_ATOMIC_RESP_RES, 1);
+ }
+
+ if (attr_mask & IB_QP_PKEY_INDEX) {
+ mqpcb->prim_p_key_idx = attr->pkey_index;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PRIM_P_KEY_IDX, 1);
+ }
+ if (attr_mask & IB_QP_PORT) {
+ if (attr->port_num < 1 || attr->port_num > shca->num_ports) {
+ ret = -EINVAL;
+ ehca_err(ibqp->device, "Invalid port=%x. "
+ "ehca_qp=%p qp_num=%x num_ports=%x",
+ attr->port_num, my_qp, ibqp->qp_num,
+ shca->num_ports);
+ goto modify_qp_exit2;
+ }
+ mqpcb->prim_phys_port = attr->port_num;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PRIM_PHYS_PORT, 1);
+ }
+ if (attr_mask & IB_QP_QKEY) {
+ mqpcb->qkey = attr->qkey;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_QKEY, 1);
+ }
+ if (attr_mask & IB_QP_AV) {
+ int ah_mult = ib_rate_to_mult(attr->ah_attr.static_rate);
+ int ehca_mult = ib_rate_to_mult(shca->sport[my_qp->
+ init_attr.port_num].rate);
+
+ mqpcb->dlid = attr->ah_attr.dlid;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DLID, 1);
+ mqpcb->source_path_bits = attr->ah_attr.src_path_bits;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SOURCE_PATH_BITS, 1);
+ mqpcb->service_level = attr->ah_attr.sl;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SERVICE_LEVEL, 1);
+
+ if (ah_mult < ehca_mult)
+ mqpcb->max_static_rate = (ah_mult > 0) ?
+ ((ehca_mult - 1) / ah_mult) : 0;
+ else
+ mqpcb->max_static_rate = 0;
+
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_MAX_STATIC_RATE, 1);
+
+ /*
+ * only if GRH is TRUE we might consider SOURCE_GID_IDX
+ * and DEST_GID otherwise phype will return H_ATTR_PARM!!!
+ */
+ if (attr->ah_attr.ah_flags == IB_AH_GRH) {
+ mqpcb->send_grh_flag = 1 << 31;
+ update_mask |=
+ EHCA_BMASK_SET(MQPCB_MASK_SEND_GRH_FLAG, 1);
+ mqpcb->source_gid_idx = attr->ah_attr.grh.sgid_index;
+ update_mask |=
+ EHCA_BMASK_SET(MQPCB_MASK_SOURCE_GID_IDX, 1);
+
+ for (cnt = 0; cnt < 16; cnt++)
+ mqpcb->dest_gid.byte[cnt] =
+ attr->ah_attr.grh.dgid.raw[cnt];
+
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DEST_GID, 1);
+ mqpcb->flow_label = attr->ah_attr.grh.flow_label;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_FLOW_LABEL, 1);
+ mqpcb->hop_limit = attr->ah_attr.grh.hop_limit;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_HOP_LIMIT, 1);
+ mqpcb->traffic_class = attr->ah_attr.grh.traffic_class;
+ update_mask |=
+ EHCA_BMASK_SET(MQPCB_MASK_TRAFFIC_CLASS, 1);
+ }
+ }
+
+ if (attr_mask & IB_QP_PATH_MTU) {
+ mqpcb->path_mtu = attr->path_mtu;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PATH_MTU, 1);
+ }
+ if (attr_mask & IB_QP_TIMEOUT) {
+ mqpcb->timeout = attr->timeout;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_TIMEOUT, 1);
+ }
+ if (attr_mask & IB_QP_RETRY_CNT) {
+ mqpcb->retry_count = attr->retry_cnt;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RETRY_COUNT, 1);
+ }
+ if (attr_mask & IB_QP_RNR_RETRY) {
+ mqpcb->rnr_retry_count = attr->rnr_retry;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RNR_RETRY_COUNT, 1);
+ }
+ if (attr_mask & IB_QP_RQ_PSN) {
+ mqpcb->receive_psn = attr->rq_psn;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RECEIVE_PSN, 1);
+ }
+ if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
+ mqpcb->rdma_nr_atomic_resp_res = attr->max_dest_rd_atomic < 3 ?
+ attr->max_dest_rd_atomic : 2;
+ update_mask |=
+ EHCA_BMASK_SET(MQPCB_MASK_RDMA_NR_ATOMIC_RESP_RES, 1);
+ }
+ if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
+ mqpcb->rdma_atomic_outst_dest_qp = attr->max_rd_atomic < 3 ?
+ attr->max_rd_atomic : 2;
+ update_mask |=
+ EHCA_BMASK_SET
+ (MQPCB_MASK_RDMA_ATOMIC_OUTST_DEST_QP, 1);
+ }
+ if (attr_mask & IB_QP_ALT_PATH) {
+ int ah_mult = ib_rate_to_mult(attr->alt_ah_attr.static_rate);
+ int ehca_mult = ib_rate_to_mult(
+ shca->sport[my_qp->init_attr.port_num].rate);
+
+ mqpcb->dlid_al = attr->alt_ah_attr.dlid;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DLID_AL, 1);
+ mqpcb->source_path_bits_al = attr->alt_ah_attr.src_path_bits;
+ update_mask |=
+ EHCA_BMASK_SET(MQPCB_MASK_SOURCE_PATH_BITS_AL, 1);
+ mqpcb->service_level_al = attr->alt_ah_attr.sl;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SERVICE_LEVEL_AL, 1);
+
+ if (ah_mult < ehca_mult)
+ mqpcb->max_static_rate = (ah_mult > 0) ?
+ ((ehca_mult - 1) / ah_mult) : 0;
+ else
+ mqpcb->max_static_rate_al = 0;
+
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_MAX_STATIC_RATE_AL, 1);
+
+ /*
+ * only if GRH is TRUE we might consider SOURCE_GID_IDX
+ * and DEST_GID otherwise phype will return H_ATTR_PARM!!!
+ */
+ if (attr->alt_ah_attr.ah_flags == IB_AH_GRH) {
+ mqpcb->send_grh_flag_al = 1 << 31;
+ update_mask |=
+ EHCA_BMASK_SET(MQPCB_MASK_SEND_GRH_FLAG_AL, 1);
+ mqpcb->source_gid_idx_al =
+ attr->alt_ah_attr.grh.sgid_index;
+ update_mask |=
+ EHCA_BMASK_SET(MQPCB_MASK_SOURCE_GID_IDX_AL, 1);
+
+ for (cnt = 0; cnt < 16; cnt++)
+ mqpcb->dest_gid_al.byte[cnt] =
+ attr->alt_ah_attr.grh.dgid.raw[cnt];
+
+ update_mask |=
+ EHCA_BMASK_SET(MQPCB_MASK_DEST_GID_AL, 1);
+ mqpcb->flow_label_al = attr->alt_ah_attr.grh.flow_label;
+ update_mask |=
+ EHCA_BMASK_SET(MQPCB_MASK_FLOW_LABEL_AL, 1);
+ mqpcb->hop_limit_al = attr->alt_ah_attr.grh.hop_limit;
+ update_mask |=
+ EHCA_BMASK_SET(MQPCB_MASK_HOP_LIMIT_AL, 1);
+ mqpcb->traffic_class_al =
+ attr->alt_ah_attr.grh.traffic_class;
+ update_mask |=
+ EHCA_BMASK_SET(MQPCB_MASK_TRAFFIC_CLASS_AL, 1);
+ }
+ }
+
+ if (attr_mask & IB_QP_MIN_RNR_TIMER) {
+ mqpcb->min_rnr_nak_timer_field = attr->min_rnr_timer;
+ update_mask |=
+ EHCA_BMASK_SET(MQPCB_MASK_MIN_RNR_NAK_TIMER_FIELD, 1);
+ }
+
+ if (attr_mask & IB_QP_SQ_PSN) {
+ mqpcb->send_psn = attr->sq_psn;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SEND_PSN, 1);
+ }
+
+ if (attr_mask & IB_QP_DEST_QPN) {
+ mqpcb->dest_qp_nr = attr->dest_qp_num;
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DEST_QP_NR, 1);
+ }
+
+ if (attr_mask & IB_QP_PATH_MIG_STATE) {
+ mqpcb->path_migration_state = attr->path_mig_state;
+ update_mask |=
+ EHCA_BMASK_SET(MQPCB_MASK_PATH_MIGRATION_STATE, 1);
+ }
+
+ if (attr_mask & IB_QP_CAP) {
+ mqpcb->max_nr_outst_send_wr = attr->cap.max_send_wr+1;
+ update_mask |=
+ EHCA_BMASK_SET(MQPCB_MASK_MAX_NR_OUTST_SEND_WR, 1);
+ mqpcb->max_nr_outst_recv_wr = attr->cap.max_recv_wr+1;
+ update_mask |=
+ EHCA_BMASK_SET(MQPCB_MASK_MAX_NR_OUTST_RECV_WR, 1);
+ /* no support for max_send/recv_sge yet */
+ }
+
+ if (ehca_debug_level)
+ ehca_dmp(mqpcb, 4*70, "qp_num=%x", ibqp->qp_num);
+
+ h_ret = hipz_h_modify_qp(shca->ipz_hca_handle,
+ my_qp->ipz_qp_handle,
+ &my_qp->pf,
+ update_mask,
+ mqpcb, my_qp->galpas.kernel);
+
+ if (h_ret != H_SUCCESS) {
+ ret = ehca2ib_return_code(h_ret);
+ ehca_err(ibqp->device, "hipz_h_modify_qp() failed rc=%lx "
+ "ehca_qp=%p qp_num=%x",h_ret, my_qp, ibqp->qp_num);
+ goto modify_qp_exit2;
+ }
+
+ if ((my_qp->qp_type == IB_QPT_UD ||
+ my_qp->qp_type == IB_QPT_GSI ||
+ my_qp->qp_type == IB_QPT_SMI) &&
+ statetrans == IB_QPST_SQE2RTS) {
+ /* doorbell to reprocessing wqes */
+ iosync(); /* serialize GAL register access */
+ hipz_update_sqa(my_qp, bad_wqe_cnt-1);
+ ehca_gen_dbg("doorbell for %x wqes", bad_wqe_cnt);
+ }
+
+ if (statetrans == IB_QPST_RESET2INIT ||
+ statetrans == IB_QPST_INIT2INIT) {
+ mqpcb->qp_enable = 1;
+ mqpcb->qp_state = EHCA_QPS_INIT;
+ update_mask = 0;
+ update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_ENABLE, 1);
+
+ h_ret = hipz_h_modify_qp(shca->ipz_hca_handle,
+ my_qp->ipz_qp_handle,
+ &my_qp->pf,
+ update_mask,
+ mqpcb,
+ my_qp->galpas.kernel);
+
+ if (h_ret != H_SUCCESS) {
+ ret = ehca2ib_return_code(h_ret);
+ ehca_err(ibqp->device, "ENABLE in context of "
+ "RESET_2_INIT failed! Maybe you didn't get "
+ "a LID h_ret=%lx ehca_qp=%p qp_num=%x",
+ h_ret, my_qp, ibqp->qp_num);
+ goto modify_qp_exit2;
+ }
+ }
+
+ if (statetrans == IB_QPST_ANY2RESET) {
+ ipz_qeit_reset(&my_qp->ipz_rqueue);
+ ipz_qeit_reset(&my_qp->ipz_squeue);
+ }
+
+ if (attr_mask & IB_QP_QKEY)
+ my_qp->qkey = attr->qkey;
+
+modify_qp_exit2:
+ if (squeue_locked) { /* this means: sqe -> rts */
+ spin_unlock_irqrestore(&my_qp->spinlock_s, spl_flags);
+ my_qp->sqerr_purgeflag = 1;
+ }
+
+modify_qp_exit1:
+ kfree(mqpcb);
+
+ return ret;
+}
+
+int ehca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask)
+{
+ 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);
+ u32 cur_pid = current->tgid;
+
+ if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
+ my_pd->ownpid != cur_pid) {
+ ehca_err(ibqp->pd->device, "Invalid caller pid=%x ownpid=%x",
+ cur_pid, my_pd->ownpid);
+ return -EINVAL;
+ }
+
+ return internal_modify_qp(ibqp, attr, attr_mask, 0);
+}
+
+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)
+{
+ struct ehca_qp *my_qp = container_of(qp, struct ehca_qp, ib_qp);
+ struct ehca_pd *my_pd = container_of(my_qp->ib_qp.pd, struct ehca_pd,
+ ib_pd);
+ struct ehca_shca *shca = container_of(qp->device, struct ehca_shca,
+ ib_device);
+ struct ipz_adapter_handle adapter_handle = shca->ipz_hca_handle;
+ struct hcp_modify_qp_control_block *qpcb;
+ u32 cur_pid = current->tgid;
+ int cnt, ret = 0;
+ u64 h_ret;
+
+ if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
+ my_pd->ownpid != cur_pid) {
+ ehca_err(qp->device, "Invalid caller pid=%x ownpid=%x",
+ cur_pid, my_pd->ownpid);
+ return -EINVAL;
+ }
+
+ if (qp_attr_mask & QP_ATTR_QUERY_NOT_SUPPORTED) {
+ ehca_err(qp->device,"Invalid attribute mask "
+ "ehca_qp=%p qp_num=%x qp_attr_mask=%x ",
+ my_qp, qp->qp_num, qp_attr_mask);
+ return -EINVAL;
+ }
+
+ qpcb = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL );
+ if (!qpcb) {
+ ehca_err(qp->device,"Out of memory for qpcb "
+ "ehca_qp=%p qp_num=%x", my_qp, qp->qp_num);
+ return -ENOMEM;
+ }
+
+ h_ret = hipz_h_query_qp(adapter_handle,
+ my_qp->ipz_qp_handle,
+ &my_qp->pf,
+ qpcb, my_qp->galpas.kernel);
+
+ if (h_ret != H_SUCCESS) {
+ ret = ehca2ib_return_code(h_ret);
+ ehca_err(qp->device,"hipz_h_query_qp() failed "
+ "ehca_qp=%p qp_num=%x h_ret=%lx",
+ my_qp, qp->qp_num, h_ret);
+ goto query_qp_exit1;
+ }
+
+ qp_attr->cur_qp_state = ehca2ib_qp_state(qpcb->qp_state);
+ qp_attr->qp_state = qp_attr->cur_qp_state;
+
+ if (qp_attr->cur_qp_state == -EINVAL) {
+ ret = -EINVAL;
+ ehca_err(qp->device,"Got invalid ehca_qp_state=%x "
+ "ehca_qp=%p qp_num=%x",
+ qpcb->qp_state, my_qp, qp->qp_num);
+ goto query_qp_exit1;
+ }
+
+ if (qp_attr->qp_state == IB_QPS_SQD)
+ qp_attr->sq_draining = 1;
+
+ qp_attr->qkey = qpcb->qkey;
+ qp_attr->path_mtu = qpcb->path_mtu;
+ qp_attr->path_mig_state = qpcb->path_migration_state;
+ qp_attr->rq_psn = qpcb->receive_psn;
+ qp_attr->sq_psn = qpcb->send_psn;
+ qp_attr->min_rnr_timer = qpcb->min_rnr_nak_timer_field;
+ qp_attr->cap.max_send_wr = qpcb->max_nr_outst_send_wr-1;
+ qp_attr->cap.max_recv_wr = qpcb->max_nr_outst_recv_wr-1;
+ /* UD_AV CIRCUMVENTION */
+ if (my_qp->qp_type == IB_QPT_UD) {
+ qp_attr->cap.max_send_sge =
+ qpcb->actual_nr_sges_in_sq_wqe - 2;
+ qp_attr->cap.max_recv_sge =
+ qpcb->actual_nr_sges_in_rq_wqe - 2;
+ } else {
+ qp_attr->cap.max_send_sge =
+ qpcb->actual_nr_sges_in_sq_wqe;
+ qp_attr->cap.max_recv_sge =
+ qpcb->actual_nr_sges_in_rq_wqe;
+ }
+
+ qp_attr->cap.max_inline_data = my_qp->sq_max_inline_data_size;
+ qp_attr->dest_qp_num = qpcb->dest_qp_nr;
+
+ qp_attr->pkey_index =
+ EHCA_BMASK_GET(MQPCB_PRIM_P_KEY_IDX, qpcb->prim_p_key_idx);
+
+ qp_attr->port_num =
+ EHCA_BMASK_GET(MQPCB_PRIM_PHYS_PORT, qpcb->prim_phys_port);
+
+ qp_attr->timeout = qpcb->timeout;
+ qp_attr->retry_cnt = qpcb->retry_count;
+ qp_attr->rnr_retry = qpcb->rnr_retry_count;
+
+ qp_attr->alt_pkey_index =
+ EHCA_BMASK_GET(MQPCB_PRIM_P_KEY_IDX, qpcb->alt_p_key_idx);
+
+ qp_attr->alt_port_num = qpcb->alt_phys_port;
+ qp_attr->alt_timeout = qpcb->timeout_al;
+
+ /* primary av */
+ qp_attr->ah_attr.sl = qpcb->service_level;
+
+ if (qpcb->send_grh_flag) {
+ qp_attr->ah_attr.ah_flags = IB_AH_GRH;
+ }
+
+ qp_attr->ah_attr.static_rate = qpcb->max_static_rate;
+ qp_attr->ah_attr.dlid = qpcb->dlid;
+ qp_attr->ah_attr.src_path_bits = qpcb->source_path_bits;
+ qp_attr->ah_attr.port_num = qp_attr->port_num;
+
+ /* primary GRH */
+ qp_attr->ah_attr.grh.traffic_class = qpcb->traffic_class;
+ qp_attr->ah_attr.grh.hop_limit = qpcb->hop_limit;
+ qp_attr->ah_attr.grh.sgid_index = qpcb->source_gid_idx;
+ qp_attr->ah_attr.grh.flow_label = qpcb->flow_label;
+
+ for (cnt = 0; cnt < 16; cnt++)
+ qp_attr->ah_attr.grh.dgid.raw[cnt] =
+ qpcb->dest_gid.byte[cnt];
+
+ /* alternate AV */
+ qp_attr->alt_ah_attr.sl = qpcb->service_level_al;
+ if (qpcb->send_grh_flag_al) {
+ qp_attr->alt_ah_attr.ah_flags = IB_AH_GRH;
+ }
+
+ qp_attr->alt_ah_attr.static_rate = qpcb->max_static_rate_al;
+ qp_attr->alt_ah_attr.dlid = qpcb->dlid_al;
+ qp_attr->alt_ah_attr.src_path_bits = qpcb->source_path_bits_al;
+
+ /* alternate GRH */
+ qp_attr->alt_ah_attr.grh.traffic_class = qpcb->traffic_class_al;
+ qp_attr->alt_ah_attr.grh.hop_limit = qpcb->hop_limit_al;
+ qp_attr->alt_ah_attr.grh.sgid_index = qpcb->source_gid_idx_al;
+ qp_attr->alt_ah_attr.grh.flow_label = qpcb->flow_label_al;
+
+ for (cnt = 0; cnt < 16; cnt++)
+ qp_attr->alt_ah_attr.grh.dgid.raw[cnt] =
+ qpcb->dest_gid_al.byte[cnt];
+
+ /* return init attributes given in ehca_create_qp */
+ if (qp_init_attr)
+ *qp_init_attr = my_qp->init_attr;
+
+ if (ehca_debug_level)
+ ehca_dmp(qpcb, 4*70, "qp_num=%x", qp->qp_num);
+
+query_qp_exit1:
+ kfree(qpcb);
+
+ return ret;
+}
+
+int ehca_destroy_qp(struct ib_qp *ibqp)
+{
+ struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp);
+ struct ehca_shca *shca = container_of(ibqp->device, struct ehca_shca,
+ ib_device);
+ struct ehca_pd *my_pd = container_of(my_qp->ib_qp.pd, struct ehca_pd,
+ ib_pd);
+ u32 cur_pid = current->tgid;
+ u32 qp_num = ibqp->qp_num;
+ int ret;
+ u64 h_ret;
+ u8 port_num;
+ enum ib_qp_type qp_type;
+ unsigned long flags;
+
+ if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
+ my_pd->ownpid != cur_pid) {
+ ehca_err(ibqp->device, "Invalid caller pid=%x ownpid=%x",
+ cur_pid, my_pd->ownpid);
+ return -EINVAL;
+ }
+
+ if (my_qp->send_cq) {
+ ret = ehca_cq_unassign_qp(my_qp->send_cq,
+ my_qp->real_qp_num);
+ if (ret) {
+ ehca_err(ibqp->device, "Couldn't unassign qp from "
+ "send_cq ret=%x qp_num=%x cq_num=%x", ret,
+ my_qp->ib_qp.qp_num, my_qp->send_cq->cq_number);
+ return ret;
+ }
+ }
+
+ spin_lock_irqsave(&ehca_qp_idr_lock, flags);
+ idr_remove(&ehca_qp_idr, my_qp->token);
+ spin_unlock_irqrestore(&ehca_qp_idr_lock, flags);
+
+ /* un-mmap if vma alloc */
+ if (my_qp->uspace_rqueue) {
+ ret = ehca_munmap(my_qp->uspace_rqueue,
+ my_qp->ipz_rqueue.queue_length);
+ if (ret)
+ ehca_err(ibqp->device, "Could not munmap rqueue "
+ "qp_num=%x", qp_num);
+ ret = ehca_munmap(my_qp->uspace_squeue,
+ my_qp->ipz_squeue.queue_length);
+ if (ret)
+ ehca_err(ibqp->device, "Could not munmap squeue "
+ "qp_num=%x", qp_num);
+ ret = ehca_munmap(my_qp->uspace_fwh, EHCA_PAGESIZE);
+ if (ret)
+ ehca_err(ibqp->device, "Could not munmap fwh qp_num=%x",
+ qp_num);
+ }
+
+ h_ret = hipz_h_destroy_qp(shca->ipz_hca_handle, my_qp);
+ if (h_ret != H_SUCCESS) {
+ ehca_err(ibqp->device, "hipz_h_destroy_qp() failed rc=%lx "
+ "ehca_qp=%p qp_num=%x", h_ret, my_qp, qp_num);
+ return ehca2ib_return_code(h_ret);
+ }
+
+ port_num = my_qp->init_attr.port_num;
+ qp_type = my_qp->init_attr.qp_type;
+
+ /* no support for IB_QPT_SMI yet */
+ if (qp_type == IB_QPT_GSI) {
+ struct ib_event event;
+ ehca_info(ibqp->device, "device %s: port %x is inactive.",
+ shca->ib_device.name, port_num);
+ event.device = &shca->ib_device;
+ event.event = IB_EVENT_PORT_ERR;
+ event.element.port_num = port_num;
+ shca->sport[port_num - 1].port_state = IB_PORT_DOWN;
+ ib_dispatch_event(&event);
+ }
+
+ ipz_queue_dtor(&my_qp->ipz_rqueue);
+ ipz_queue_dtor(&my_qp->ipz_squeue);
+ kmem_cache_free(qp_cache, my_qp);
+ return 0;
+}
+
+int ehca_init_qp_cache(void)
+{
+ qp_cache = kmem_cache_create("ehca_cache_qp",
+ sizeof(struct ehca_qp), 0,
+ SLAB_HWCACHE_ALIGN,
+ NULL, NULL);
+ if (!qp_cache)
+ return -ENOMEM;
+ return 0;
+}
+
+void ehca_cleanup_qp_cache(void)
+{
+ if (qp_cache)
+ kmem_cache_destroy(qp_cache);
+}
diff --git a/drivers/infiniband/hw/ehca/ehca_reqs.c b/drivers/infiniband/hw/ehca/ehca_reqs.c
new file mode 100644
index 0000000..b46bda1
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_reqs.c
@@ -0,0 +1,653 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * post_send/recv, poll_cq, req_notify
+ *
+ * Authors: Waleri Fomin <fomin@de.ibm.com>
+ * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ * Reinhard Ernst <rernst@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#include <asm-powerpc/system.h>
+#include "ehca_classes.h"
+#include "ehca_tools.h"
+#include "ehca_qes.h"
+#include "ehca_iverbs.h"
+#include "hcp_if.h"
+#include "hipz_fns.h"
+
+static inline int ehca_write_rwqe(struct ipz_queue *ipz_rqueue,
+ struct ehca_wqe *wqe_p,
+ struct ib_recv_wr *recv_wr)
+{
+ u8 cnt_ds;
+ if (unlikely((recv_wr->num_sge < 0) ||
+ (recv_wr->num_sge > ipz_rqueue->act_nr_of_sg))) {
+ ehca_gen_err("Invalid number of WQE SGE. "
+ "num_sqe=%x max_nr_of_sg=%x",
+ recv_wr->num_sge, ipz_rqueue->act_nr_of_sg);
+ return -EINVAL; /* invalid SG list length */
+ }
+
+ /* clear wqe header until sglist */
+ memset(wqe_p, 0, offsetof(struct ehca_wqe, u.ud_av.sg_list));
+
+ wqe_p->work_request_id = recv_wr->wr_id;
+ wqe_p->nr_of_data_seg = recv_wr->num_sge;
+
+ for (cnt_ds = 0; cnt_ds < recv_wr->num_sge; cnt_ds++) {
+ wqe_p->u.all_rcv.sg_list[cnt_ds].vaddr =
+ recv_wr->sg_list[cnt_ds].addr;
+ wqe_p->u.all_rcv.sg_list[cnt_ds].lkey =
+ recv_wr->sg_list[cnt_ds].lkey;
+ wqe_p->u.all_rcv.sg_list[cnt_ds].length =
+ recv_wr->sg_list[cnt_ds].length;
+ }
+
+ 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");
+ }
+
+ return 0;
+}
+
+#if defined(DEBUG_GSI_SEND_WR)
+
+/* need ib_mad struct */
+#include <rdma/ib_mad.h>
+
+static void trace_send_wr_ud(const struct ib_send_wr *send_wr)
+{
+ int idx;
+ int j;
+ while (send_wr) {
+ struct ib_mad_hdr *mad_hdr = send_wr->wr.ud.mad_hdr;
+ struct ib_sge *sge = send_wr->sg_list;
+ ehca_gen_dbg("send_wr#%x wr_id=%lx num_sge=%x "
+ "send_flags=%x opcode=%x",idx, send_wr->wr_id,
+ send_wr->num_sge, send_wr->send_flags,
+ send_wr->opcode);
+ if (mad_hdr) {
+ ehca_gen_dbg("send_wr#%x mad_hdr base_version=%x "
+ "mgmt_class=%x class_version=%x method=%x "
+ "status=%x class_specific=%x tid=%lx "
+ "attr_id=%x resv=%x attr_mod=%x",
+ idx, mad_hdr->base_version,
+ mad_hdr->mgmt_class,
+ mad_hdr->class_version, mad_hdr->method,
+ mad_hdr->status, mad_hdr->class_specific,
+ mad_hdr->tid, mad_hdr->attr_id,
+ mad_hdr->resv,
+ mad_hdr->attr_mod);
+ }
+ for (j = 0; j < send_wr->num_sge; j++) {
+ u8 *data = (u8 *) abs_to_virt(sge->addr);
+ ehca_gen_dbg("send_wr#%x sge#%x addr=%p length=%x "
+ "lkey=%x",
+ idx, j, data, sge->length, sge->lkey);
+ /* assume length is n*16 */
+ ehca_dmp(data, sge->length, "send_wr#%x sge#%x",
+ idx, j);
+ sge++;
+ } /* eof for j */
+ idx++;
+ send_wr = send_wr->next;
+ } /* eof while send_wr */
+}
+
+#endif /* DEBUG_GSI_SEND_WR */
+
+static inline int ehca_write_swqe(struct ehca_qp *qp,
+ struct ehca_wqe *wqe_p,
+ const struct ib_send_wr *send_wr)
+{
+ u32 idx;
+ u64 dma_length;
+ struct ehca_av *my_av;
+ u32 remote_qkey = send_wr->wr.ud.remote_qkey;
+
+ if (unlikely((send_wr->num_sge < 0) ||
+ (send_wr->num_sge > qp->ipz_squeue.act_nr_of_sg))) {
+ ehca_gen_err("Invalid number of WQE SGE. "
+ "num_sqe=%x max_nr_of_sg=%x",
+ send_wr->num_sge, qp->ipz_squeue.act_nr_of_sg);
+ return -EINVAL; /* invalid SG list length */
+ }
+
+ /* clear wqe header until sglist */
+ memset(wqe_p, 0, offsetof(struct ehca_wqe, u.ud_av.sg_list));
+
+ wqe_p->work_request_id = send_wr->wr_id;
+
+ switch (send_wr->opcode) {
+ case IB_WR_SEND:
+ case IB_WR_SEND_WITH_IMM:
+ wqe_p->optype = WQE_OPTYPE_SEND;
+ break;
+ case IB_WR_RDMA_WRITE:
+ case IB_WR_RDMA_WRITE_WITH_IMM:
+ wqe_p->optype = WQE_OPTYPE_RDMAWRITE;
+ break;
+ case IB_WR_RDMA_READ:
+ wqe_p->optype = WQE_OPTYPE_RDMAREAD;
+ break;
+ default:
+ ehca_gen_err("Invalid opcode=%x", send_wr->opcode);
+ return -EINVAL; /* invalid opcode */
+ }
+
+ wqe_p->wqef = (send_wr->opcode) & WQEF_HIGH_NIBBLE;
+
+ wqe_p->wr_flag = 0;
+
+ if (send_wr->send_flags & IB_SEND_SIGNALED)
+ wqe_p->wr_flag |= WQE_WRFLAG_REQ_SIGNAL_COM;
+
+ if (send_wr->opcode == IB_WR_SEND_WITH_IMM ||
+ send_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) {
+ /* this might not work as long as HW does not support it */
+ wqe_p->immediate_data = be32_to_cpu(send_wr->imm_data);
+ wqe_p->wr_flag |= WQE_WRFLAG_IMM_DATA_PRESENT;
+ }
+
+ wqe_p->nr_of_data_seg = send_wr->num_sge;
+
+ switch (qp->qp_type) {
+ case IB_QPT_SMI:
+ case IB_QPT_GSI:
+ /* no break is intential here */
+ case IB_QPT_UD:
+ /* IB 1.2 spec C10-15 compliance */
+ if (send_wr->wr.ud.remote_qkey & 0x80000000)
+ remote_qkey = qp->qkey;
+
+ 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) {
+ ehca_gen_err("wr.ud.ah is NULL. qp=%p", qp);
+ return -EINVAL;
+ }
+ my_av = container_of(send_wr->wr.ud.ah, struct ehca_av, ib_ah);
+ wqe_p->u.ud_av.ud_av = my_av->av;
+
+ /*
+ * omitted check of IB_SEND_INLINE
+ * since HW does not support it
+ */
+ for (idx = 0; idx < send_wr->num_sge; idx++) {
+ wqe_p->u.ud_av.sg_list[idx].vaddr =
+ send_wr->sg_list[idx].addr;
+ wqe_p->u.ud_av.sg_list[idx].lkey =
+ send_wr->sg_list[idx].lkey;
+ wqe_p->u.ud_av.sg_list[idx].length =
+ send_wr->sg_list[idx].length;
+ } /* eof for idx */
+ if (qp->qp_type == IB_QPT_SMI ||
+ qp->qp_type == IB_QPT_GSI)
+ wqe_p->u.ud_av.ud_av.pmtu = 1;
+ if (qp->qp_type == IB_QPT_GSI) {
+ wqe_p->pkeyi = send_wr->wr.ud.pkey_index;
+#ifdef DEBUG_GSI_SEND_WR
+ trace_send_wr_ud(send_wr);
+#endif /* DEBUG_GSI_SEND_WR */
+ }
+ break;
+
+ case IB_QPT_UC:
+ if (send_wr->send_flags & IB_SEND_FENCE)
+ wqe_p->wr_flag |= WQE_WRFLAG_FENCE;
+ /* no break is intentional here */
+ case IB_QPT_RC:
+ /* TODO: atomic not implemented */
+ wqe_p->u.nud.remote_virtual_adress =
+ send_wr->wr.rdma.remote_addr;
+ wqe_p->u.nud.rkey = send_wr->wr.rdma.rkey;
+
+ /*
+ * omitted checking of IB_SEND_INLINE
+ * since HW does not support it
+ */
+ dma_length = 0;
+ for (idx = 0; idx < send_wr->num_sge; idx++) {
+ wqe_p->u.nud.sg_list[idx].vaddr =
+ send_wr->sg_list[idx].addr;
+ wqe_p->u.nud.sg_list[idx].lkey =
+ send_wr->sg_list[idx].lkey;
+ wqe_p->u.nud.sg_list[idx].length =
+ send_wr->sg_list[idx].length;
+ dma_length += send_wr->sg_list[idx].length;
+ } /* eof idx */
+ wqe_p->u.nud.atomic_1st_op_dma_len = dma_length;
+
+ break;
+
+ default:
+ ehca_gen_err("Invalid qptype=%x", qp->qp_type);
+ return -EINVAL;
+ }
+
+ if (ehca_debug_level) {
+ ehca_gen_dbg("SEND WQE written into queue qp=%p ", qp);
+ ehca_dmp( wqe_p, 16*(6 + wqe_p->nr_of_data_seg), "send wqe");
+ }
+ return 0;
+}
+
+/* map_ib_wc_status converts raw cqe_status to ib_wc_status */
+static inline void map_ib_wc_status(u32 cqe_status,
+ enum ib_wc_status *wc_status)
+{
+ if (unlikely(cqe_status & WC_STATUS_ERROR_BIT)) {
+ switch (cqe_status & 0x3F) {
+ case 0x01:
+ case 0x21:
+ *wc_status = IB_WC_LOC_LEN_ERR;
+ break;
+ case 0x02:
+ case 0x22:
+ *wc_status = IB_WC_LOC_QP_OP_ERR;
+ break;
+ case 0x03:
+ case 0x23:
+ *wc_status = IB_WC_LOC_EEC_OP_ERR;
+ break;
+ case 0x04:
+ case 0x24:
+ *wc_status = IB_WC_LOC_PROT_ERR;
+ break;
+ case 0x05:
+ case 0x25:
+ *wc_status = IB_WC_WR_FLUSH_ERR;
+ break;
+ case 0x06:
+ *wc_status = IB_WC_MW_BIND_ERR;
+ break;
+ case 0x07: /* remote error - look into bits 20:24 */
+ switch ((cqe_status
+ & WC_STATUS_REMOTE_ERROR_FLAGS) >> 11) {
+ case 0x0:
+ /*
+ * PSN Sequence Error!
+ * couldn't find a matching status!
+ */
+ *wc_status = IB_WC_GENERAL_ERR;
+ break;
+ case 0x1:
+ *wc_status = IB_WC_REM_INV_REQ_ERR;
+ break;
+ case 0x2:
+ *wc_status = IB_WC_REM_ACCESS_ERR;
+ break;
+ case 0x3:
+ *wc_status = IB_WC_REM_OP_ERR;
+ break;
+ case 0x4:
+ *wc_status = IB_WC_REM_INV_RD_REQ_ERR;
+ break;
+ }
+ break;
+ case 0x08:
+ *wc_status = IB_WC_RETRY_EXC_ERR;
+ break;
+ case 0x09:
+ *wc_status = IB_WC_RNR_RETRY_EXC_ERR;
+ break;
+ case 0x0A:
+ case 0x2D:
+ *wc_status = IB_WC_REM_ABORT_ERR;
+ break;
+ case 0x0B:
+ case 0x2E:
+ *wc_status = IB_WC_INV_EECN_ERR;
+ break;
+ case 0x0C:
+ case 0x2F:
+ *wc_status = IB_WC_INV_EEC_STATE_ERR;
+ break;
+ case 0x0D:
+ *wc_status = IB_WC_BAD_RESP_ERR;
+ break;
+ case 0x10:
+ /* WQE purged */
+ *wc_status = IB_WC_WR_FLUSH_ERR;
+ break;
+ default:
+ *wc_status = IB_WC_FATAL_ERR;
+
+ }
+ } else
+ *wc_status = IB_WC_SUCCESS;
+}
+
+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 spl_flags;
+
+ /* LOCK the QUEUE */
+ spin_lock_irqsave(&my_qp->spinlock_s, spl_flags);
+
+ /* 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
+ */
+ 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);
+ }
+ goto post_send_exit0;
+ }
+ wqe_cnt++;
+ ehca_dbg(qp->device, "ehca_qp=%p qp_num=%x wqe_cnt=%d",
+ my_qp, qp->qp_num, wqe_cnt);
+ } /* eof for cur_send_wr */
+
+post_send_exit0:
+ /* UNLOCK the QUEUE */
+ spin_unlock_irqrestore(&my_qp->spinlock_s, spl_flags);
+ iosync(); /* serialize GAL register access */
+ hipz_update_sqa(my_qp, wqe_cnt);
+ return ret;
+}
+
+int ehca_post_recv(struct ib_qp *qp,
+ struct ib_recv_wr *recv_wr,
+ struct ib_recv_wr **bad_recv_wr)
+{
+ struct ehca_qp *my_qp = container_of(qp, struct ehca_qp, ib_qp);
+ struct ib_recv_wr *cur_recv_wr;
+ struct ehca_wqe *wqe_p;
+ int wqe_cnt = 0;
+ int ret = 0;
+ unsigned long spl_flags;
+
+ /* LOCK the QUEUE */
+ spin_lock_irqsave(&my_qp->spinlock_r, spl_flags);
+
+ /* loop processes list of send reqs */
+ for (cur_recv_wr = recv_wr; cur_recv_wr != NULL;
+ cur_recv_wr = cur_recv_wr->next) {
+ u64 start_offset = my_qp->ipz_rqueue.current_q_offset;
+ /* get pointer next to free WQE */
+ wqe_p = ipz_qeit_get_inc(&my_qp->ipz_rqueue);
+ if (unlikely(!wqe_p)) {
+ /* too many posted work requests: queue overflow */
+ if (bad_recv_wr)
+ *bad_recv_wr = cur_recv_wr;
+ if (wqe_cnt == 0) {
+ ret = -ENOMEM;
+ ehca_err(qp->device, "Too many posted WQEs "
+ "qp_num=%x", qp->qp_num);
+ }
+ goto post_recv_exit0;
+ }
+ /* write a RECV WQE into the QUEUE */
+ ret = ehca_write_rwqe(&my_qp->ipz_rqueue, wqe_p, cur_recv_wr);
+ /*
+ * if something failed,
+ * reset the free entry pointer to the start value
+ */
+ if (unlikely(ret)) {
+ my_qp->ipz_rqueue.current_q_offset = start_offset;
+ *bad_recv_wr = cur_recv_wr;
+ if (wqe_cnt == 0) {
+ ret = -EINVAL;
+ ehca_err(qp->device, "Could not write WQE "
+ "qp_num=%x", qp->qp_num);
+ }
+ goto post_recv_exit0;
+ }
+ wqe_cnt++;
+ ehca_gen_dbg("ehca_qp=%p qp_num=%x wqe_cnt=%d",
+ my_qp, qp->qp_num, wqe_cnt);
+ } /* eof for cur_recv_wr */
+
+post_recv_exit0:
+ spin_unlock_irqrestore(&my_qp->spinlock_r, spl_flags);
+ iosync(); /* serialize GAL register access */
+ hipz_update_rqa(my_qp, wqe_cnt);
+ return ret;
+}
+
+/*
+ * ib_wc_opcode table converts ehca wc opcode to ib
+ * Since we use zero to indicate invalid opcode, the actual ib opcode must
+ * be decremented!!!
+ */
+static const u8 ib_wc_opcode[255] = {
+ [0x01] = IB_WC_RECV+1,
+ [0x02] = IB_WC_RECV_RDMA_WITH_IMM+1,
+ [0x04] = IB_WC_BIND_MW+1,
+ [0x08] = IB_WC_FETCH_ADD+1,
+ [0x10] = IB_WC_COMP_SWAP+1,
+ [0x20] = IB_WC_RDMA_WRITE+1,
+ [0x40] = IB_WC_RDMA_READ+1,
+ [0x80] = IB_WC_SEND+1
+};
+
+/* internal function to poll one entry of cq */
+static inline int ehca_poll_cq_one(struct ib_cq *cq, struct ib_wc *wc)
+{
+ int ret = 0;
+ struct ehca_cq *my_cq = container_of(cq, struct ehca_cq, ib_cq);
+ struct ehca_cqe *cqe;
+ int cqe_count = 0;
+
+poll_cq_one_read_cqe:
+ cqe = (struct ehca_cqe *)
+ ipz_qeit_get_inc_valid(&my_cq->ipz_queue);
+ if (!cqe) {
+ ret = -EAGAIN;
+ ehca_dbg(cq->device, "Completion queue is empty ehca_cq=%p "
+ "cq_num=%x ret=%x", my_cq, my_cq->cq_number, ret);
+ goto poll_cq_one_exit0;
+ }
+
+ /* prevents loads being reordered across this point */
+ rmb();
+
+ cqe_count++;
+ if (unlikely(cqe->status & WC_STATUS_PURGE_BIT)) {
+ struct ehca_qp *qp=ehca_cq_get_qp(my_cq, cqe->local_qp_number);
+ int purgeflag;
+ unsigned long spl_flags;
+ if (!qp) {
+ ehca_err(cq->device, "cq_num=%x qp_num=%x "
+ "could not find qp -> ignore cqe",
+ my_cq->cq_number, cqe->local_qp_number);
+ ehca_dmp(cqe, 64, "cq_num=%x qp_num=%x",
+ my_cq->cq_number, cqe->local_qp_number);
+ /* ignore this purged cqe */
+ goto poll_cq_one_read_cqe;
+ }
+ spin_lock_irqsave(&qp->spinlock_s, spl_flags);
+ purgeflag = qp->sqerr_purgeflag;
+ spin_unlock_irqrestore(&qp->spinlock_s, spl_flags);
+
+ if (purgeflag) {
+ ehca_dbg(cq->device, "Got CQE with purged bit qp_num=%x "
+ "src_qp=%x",
+ cqe->local_qp_number, cqe->remote_qp_number);
+ if (ehca_debug_level)
+ ehca_dmp(cqe, 64, "qp_num=%x src_qp=%x",
+ cqe->local_qp_number,
+ cqe->remote_qp_number);
+ /*
+ * ignore this to avoid double cqes of bad wqe
+ * that caused sqe and turn off purge flag
+ */
+ qp->sqerr_purgeflag = 0;
+ goto poll_cq_one_read_cqe;
+ }
+ }
+
+ /* tracing cqe */
+ if (ehca_debug_level) {
+ ehca_dbg(cq->device,
+ "Received COMPLETION ehca_cq=%p cq_num=%x -----",
+ my_cq, my_cq->cq_number);
+ ehca_dmp(cqe, 64, "ehca_cq=%p cq_num=%x",
+ my_cq, my_cq->cq_number);
+ ehca_dbg(cq->device,
+ "ehca_cq=%p cq_num=%x -------------------------",
+ my_cq, my_cq->cq_number);
+ }
+
+ /* we got a completion! */
+ wc->wr_id = cqe->work_request_id;
+
+ /* eval ib_wc_opcode */
+ wc->opcode = ib_wc_opcode[cqe->optype]-1;
+ if (unlikely(wc->opcode == -1)) {
+ ehca_err(cq->device, "Invalid cqe->OPType=%x cqe->status=%x "
+ "ehca_cq=%p cq_num=%x",
+ cqe->optype, cqe->status, my_cq, my_cq->cq_number);
+ /* dump cqe for other infos */
+ ehca_dmp(cqe, 64, "ehca_cq=%p cq_num=%x",
+ my_cq, my_cq->cq_number);
+ /* update also queue adder to throw away this entry!!! */
+ goto poll_cq_one_exit0;
+ }
+ /* eval ib_wc_status */
+ if (unlikely(cqe->status & WC_STATUS_ERROR_BIT)) {
+ /* complete with errors */
+ map_ib_wc_status(cqe->status, &wc->status);
+ wc->vendor_err = wc->status;
+ } else
+ wc->status = IB_WC_SUCCESS;
+
+ wc->qp_num = cqe->local_qp_number;
+ wc->byte_len = cqe->nr_bytes_transferred;
+ wc->pkey_index = cqe->pkey_index;
+ wc->slid = cqe->rlid;
+ wc->dlid_path_bits = cqe->dlid;
+ wc->src_qp = cqe->remote_qp_number;
+ wc->wc_flags = cqe->w_completion_flags;
+ wc->imm_data = cpu_to_be32(cqe->immediate_data);
+ wc->sl = cqe->service_level;
+
+ if (wc->status != IB_WC_SUCCESS)
+ ehca_dbg(cq->device,
+ "ehca_cq=%p cq_num=%x WARNING unsuccessful cqe "
+ "OPType=%x status=%x qp_num=%x src_qp=%x wr_id=%lx "
+ "cqe=%p", my_cq, my_cq->cq_number, cqe->optype,
+ cqe->status, cqe->local_qp_number,
+ cqe->remote_qp_number, cqe->work_request_id, cqe);
+
+poll_cq_one_exit0:
+ if (cqe_count > 0)
+ hipz_update_feca(my_cq, cqe_count);
+
+ return ret;
+}
+
+int ehca_poll_cq(struct ib_cq *cq, int num_entries, struct ib_wc *wc)
+{
+ struct ehca_cq *my_cq = container_of(cq, struct ehca_cq, ib_cq);
+ int nr;
+ struct ib_wc *current_wc = wc;
+ int ret = 0;
+ unsigned long spl_flags;
+
+ if (num_entries < 1) {
+ ehca_err(cq->device, "Invalid num_entries=%d ehca_cq=%p "
+ "cq_num=%x", num_entries, my_cq, my_cq->cq_number);
+ ret = -EINVAL;
+ goto poll_cq_exit0;
+ }
+
+ spin_lock_irqsave(&my_cq->spinlock, spl_flags);
+ for (nr = 0; nr < num_entries; nr++) {
+ ret = ehca_poll_cq_one(cq, current_wc);
+ if (ret)
+ break;
+ current_wc++;
+ } /* eof for nr */
+ spin_unlock_irqrestore(&my_cq->spinlock, spl_flags);
+ if (ret == -EAGAIN || !ret)
+ ret = nr;
+
+poll_cq_exit0:
+ return ret;
+}
+
+int ehca_req_notify_cq(struct ib_cq *cq, enum ib_cq_notify cq_notify)
+{
+ struct ehca_cq *my_cq = container_of(cq, struct ehca_cq, ib_cq);
+
+ switch (cq_notify) {
+ case IB_CQ_SOLICITED:
+ hipz_set_cqx_n0(my_cq, 1);
+ break;
+ case IB_CQ_NEXT_COMP:
+ hipz_set_cqx_n1(my_cq, 1);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
diff --git a/drivers/infiniband/hw/ehca/ehca_sqp.c b/drivers/infiniband/hw/ehca/ehca_sqp.c
new file mode 100644
index 0000000..9f16e9c
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_sqp.c
@@ -0,0 +1,111 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * SQP functions
+ *
+ * Authors: Khadija Souissi <souissi@de.ibm.com>
+ * Heiko J Schick <schickhj@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#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"
+
+
+/**
+ * ehca_define_sqp - Defines special queue pair 1 (GSI QP). When special queue
+ * pair is created successfully, the corresponding port gets active.
+ *
+ * Define Special Queue pair 0 (SMI QP) is still not supported.
+ *
+ * @qp_init_attr: Queue pair init attributes with port and queue pair type
+ */
+
+u64 ehca_define_sqp(struct ehca_shca *shca,
+ struct ehca_qp *ehca_qp,
+ struct ib_qp_init_attr *qp_init_attr)
+{
+ u32 pma_qp_nr, bma_qp_nr;
+ u64 ret;
+ u8 port = qp_init_attr->port_num;
+ int counter;
+
+ shca->sport[port - 1].port_state = IB_PORT_DOWN;
+
+ switch (qp_init_attr->qp_type) {
+ case IB_QPT_SMI:
+ /* function not supported yet */
+ break;
+ case IB_QPT_GSI:
+ ret = hipz_h_define_aqp1(shca->ipz_hca_handle,
+ ehca_qp->ipz_qp_handle,
+ ehca_qp->galpas.kernel,
+ (u32) qp_init_attr->port_num,
+ &pma_qp_nr, &bma_qp_nr);
+
+ if (ret != H_SUCCESS) {
+ ehca_err(&shca->ib_device,
+ "Can't define AQP1 for port %x. rc=%lx",
+ port, ret);
+ return ret;
+ }
+ break;
+ default:
+ ehca_err(&shca->ib_device, "invalid qp_type=%x",
+ qp_init_attr->qp_type);
+ return H_PARAMETER;
+ }
+
+ for (counter = 0;
+ shca->sport[port - 1].port_state != IB_PORT_ACTIVE &&
+ counter < ehca_port_act_time;
+ counter++) {
+ ehca_dbg(&shca->ib_device, "... wait until port %x is active",
+ port);
+ msleep_interruptible(1000);
+ }
+
+ if (counter == ehca_port_act_time) {
+ ehca_err(&shca->ib_device, "Port %x is not active.", port);
+ return H_HARDWARE;
+ }
+
+ return H_SUCCESS;
+}
diff --git a/drivers/infiniband/hw/ehca/ehca_tools.h b/drivers/infiniband/hw/ehca/ehca_tools.h
new file mode 100644
index 0000000..9f56bb8
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_tools.h
@@ -0,0 +1,172 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * auxiliary functions
+ *
+ * Authors: Christoph Raisch <raisch@de.ibm.com>
+ * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ * Khadija Souissi <souissik@de.ibm.com>
+ * Waleri Fomin <fomin@de.ibm.com>
+ * Heiko J Schick <schickhj@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#ifndef EHCA_TOOLS_H
+#define EHCA_TOOLS_H
+
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <linux/delay.h>
+#include <linux/idr.h>
+#include <linux/kthread.h>
+#include <linux/mm.h>
+#include <linux/mman.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/vmalloc.h>
+#include <linux/version.h>
+#include <linux/notifier.h>
+#include <linux/cpu.h>
+#include <linux/device.h>
+
+#include <asm/abs_addr.h>
+#include <asm/ibmebus.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+
+extern int ehca_debug_level;
+
+#define ehca_dbg(ib_dev, format, arg...) \
+ do { \
+ if (unlikely(ehca_debug_level)) \
+ dev_printk(KERN_DEBUG, (ib_dev)->dma_device, \
+ "PU%04x EHCA_DBG:%s " format "\n", \
+ get_paca()->paca_index, __FUNCTION__, \
+ ## arg); \
+ } while (0)
+
+#define ehca_info(ib_dev, format, arg...) \
+ dev_info((ib_dev)->dma_device, "PU%04x EHCA_INFO:%s " format "\n", \
+ get_paca()->paca_index, __FUNCTION__, ## arg)
+
+#define ehca_warn(ib_dev, format, arg...) \
+ dev_warn((ib_dev)->dma_device, "PU%04x EHCA_WARN:%s " format "\n", \
+ get_paca()->paca_index, __FUNCTION__, ## arg)
+
+#define ehca_err(ib_dev, format, arg...) \
+ dev_err((ib_dev)->dma_device, "PU%04x EHCA_ERR:%s " format "\n", \
+ get_paca()->paca_index, __FUNCTION__, ## arg)
+
+/* use this one only if no ib_dev available */
+#define ehca_gen_dbg(format, arg...) \
+ do { \
+ if (unlikely(ehca_debug_level)) \
+ printk(KERN_DEBUG "PU%04x EHCA_DBG:%s " format "\n",\
+ get_paca()->paca_index, __FUNCTION__, ## arg); \
+ } while (0)
+
+#define ehca_gen_warn(format, arg...) \
+ do { \
+ if (unlikely(ehca_debug_level)) \
+ printk(KERN_INFO "PU%04x EHCA_WARN:%s " format "\n",\
+ get_paca()->paca_index, __FUNCTION__, ## arg); \
+ } while (0)
+
+#define ehca_gen_err(format, arg...) \
+ printk(KERN_ERR "PU%04x EHCA_ERR:%s " format "\n", \
+ get_paca()->paca_index, __FUNCTION__, ## arg)
+
+/**
+ * ehca_dmp - printk a memory block, whose length is n*8 bytes.
+ * Each line has the following layout:
+ * <format string> adr=X ofs=Y <8 bytes hex> <8 bytes hex>
+ */
+#define ehca_dmp(adr, len, format, args...) \
+ do { \
+ unsigned int x; \
+ unsigned int l = (unsigned int)(len); \
+ unsigned char *deb = (unsigned char*)(adr); \
+ for (x = 0; x < l; x += 16) { \
+ printk("EHCA_DMP:%s" format \
+ " adr=%p ofs=%04x %016lx %016lx\n", \
+ __FUNCTION__, ##args, deb, x, \
+ *((u64 *)&deb[0]), *((u64 *)&deb[8])); \
+ deb += 16; \
+ } \
+ } while (0)
+
+/* define a bitmask, little endian version */
+#define EHCA_BMASK(pos,length) (((pos)<<16)+(length))
+
+/* define a bitmask, the ibm way... */
+#define EHCA_BMASK_IBM(from,to) (((63-to)<<16)+((to)-(from)+1))
+
+/* internal function, don't use */
+#define EHCA_BMASK_SHIFTPOS(mask) (((mask)>>16)&0xffff)
+
+/* internal function, don't use */
+#define EHCA_BMASK_MASK(mask) (0xffffffffffffffffULL >> ((64-(mask))&0xffff))
+
+/**
+ * EHCA_BMASK_SET - return value shifted and masked by mask
+ * variable|=EHCA_BMASK_SET(MY_MASK,0x4711) ORs the bits in variable
+ * variable&=~EHCA_BMASK_SET(MY_MASK,-1) clears the bits from the mask
+ * in variable
+ */
+#define EHCA_BMASK_SET(mask,value) \
+ ((EHCA_BMASK_MASK(mask) & ((u64)(value)))<<EHCA_BMASK_SHIFTPOS(mask))
+
+/**
+ * EHCA_BMASK_GET - extract a parameter from value by mask
+ */
+#define EHCA_BMASK_GET(mask,value) \
+ (EHCA_BMASK_MASK(mask)& (((u64)(value))>>EHCA_BMASK_SHIFTPOS(mask)))
+
+
+/* Converts ehca to ib return code */
+static inline int ehca2ib_return_code(u64 ehca_rc)
+{
+ switch (ehca_rc) {
+ case H_SUCCESS:
+ return 0;
+ case H_BUSY:
+ return -EBUSY;
+ case H_NO_MEM:
+ return -ENOMEM;
+ default:
+ return -EINVAL;
+ }
+}
+
+
+#endif /* EHCA_TOOLS_H */
diff --git a/drivers/infiniband/hw/ehca/ehca_uverbs.c b/drivers/infiniband/hw/ehca/ehca_uverbs.c
new file mode 100644
index 0000000..e08764e
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_uverbs.c
@@ -0,0 +1,392 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * userspace support verbs
+ *
+ * Authors: Christoph Raisch <raisch@de.ibm.com>
+ * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ * Heiko J Schick <schickhj@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <asm/current.h>
+
+#include "ehca_classes.h"
+#include "ehca_iverbs.h"
+#include "ehca_mrmw.h"
+#include "ehca_tools.h"
+#include "hcp_if.h"
+
+struct ib_ucontext *ehca_alloc_ucontext(struct ib_device *device,
+ struct ib_udata *udata)
+{
+ struct ehca_ucontext *my_context;
+
+ my_context = kzalloc(sizeof *my_context, GFP_KERNEL);
+ if (!my_context) {
+ ehca_err(device, "Out of memory device=%p", device);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ return &my_context->ib_ucontext;
+}
+
+int ehca_dealloc_ucontext(struct ib_ucontext *context)
+{
+ kfree(container_of(context, struct ehca_ucontext, ib_ucontext));
+ return 0;
+}
+
+struct page *ehca_nopage(struct vm_area_struct *vma,
+ unsigned long address, int *type)
+{
+ struct page *mypage = NULL;
+ 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 */
+ u32 cur_pid = current->tgid;
+ unsigned long flags;
+ struct ehca_cq *cq;
+ struct ehca_qp *qp;
+ struct ehca_pd *pd;
+ u64 offset;
+ void *vaddr;
+
+ switch (q_type) {
+ case 1: /* CQ */
+ spin_lock_irqsave(&ehca_cq_idr_lock, flags);
+ cq = idr_find(&ehca_cq_idr, idr_handle);
+ spin_unlock_irqrestore(&ehca_cq_idr_lock, flags);
+
+ /* make sure this mmap really belongs to the authorized user */
+ if (!cq) {
+ ehca_gen_err("cq is NULL ret=NOPAGE_SIGBUS");
+ return NOPAGE_SIGBUS;
+ }
+
+ if (cq->ownpid != cur_pid) {
+ ehca_err(cq->ib_cq.device,
+ "Invalid caller pid=%x ownpid=%x",
+ cur_pid, cq->ownpid);
+ return NOPAGE_SIGBUS;
+ }
+
+ if (rsrc_type == 2) {
+ ehca_dbg(cq->ib_cq.device, "cq=%p cq queuearea", cq);
+ offset = address - vma->vm_start;
+ vaddr = ipz_qeit_calc(&cq->ipz_queue, offset);
+ ehca_dbg(cq->ib_cq.device, "offset=%lx vaddr=%p",
+ offset, vaddr);
+ mypage = virt_to_page(vaddr);
+ }
+ break;
+
+ case 2: /* QP */
+ spin_lock_irqsave(&ehca_qp_idr_lock, flags);
+ qp = idr_find(&ehca_qp_idr, idr_handle);
+ spin_unlock_irqrestore(&ehca_qp_idr_lock, flags);
+
+ /* make sure this mmap really belongs to the authorized user */
+ if (!qp) {
+ ehca_gen_err("qp is NULL ret=NOPAGE_SIGBUS");
+ return NOPAGE_SIGBUS;
+ }
+
+ pd = container_of(qp->ib_qp.pd, struct ehca_pd, ib_pd);
+ if (pd->ownpid != cur_pid) {
+ ehca_err(qp->ib_qp.device,
+ "Invalid caller pid=%x ownpid=%x",
+ cur_pid, pd->ownpid);
+ return NOPAGE_SIGBUS;
+ }
+
+ if (rsrc_type == 2) { /* rqueue */
+ ehca_dbg(qp->ib_qp.device, "qp=%p qp rqueuearea", qp);
+ offset = address - vma->vm_start;
+ vaddr = ipz_qeit_calc(&qp->ipz_rqueue, offset);
+ ehca_dbg(qp->ib_qp.device, "offset=%lx vaddr=%p",
+ offset, vaddr);
+ mypage = virt_to_page(vaddr);
+ } else if (rsrc_type == 3) { /* squeue */
+ ehca_dbg(qp->ib_qp.device, "qp=%p qp squeuearea", qp);
+ offset = address - vma->vm_start;
+ vaddr = ipz_qeit_calc(&qp->ipz_squeue, offset);
+ ehca_dbg(qp->ib_qp.device, "offset=%lx vaddr=%p",
+ offset, vaddr);
+ mypage = virt_to_page(vaddr);
+ }
+ break;
+
+ default:
+ ehca_gen_err("bad queue type %x", q_type);
+ return NOPAGE_SIGBUS;
+ }
+
+ if (!mypage) {
+ ehca_gen_err("Invalid page adr==NULL ret=NOPAGE_SIGBUS");
+ return NOPAGE_SIGBUS;
+ }
+ get_page(mypage);
+
+ return mypage;
+}
+
+static struct vm_operations_struct ehcau_vm_ops = {
+ .nopage = ehca_nopage,
+};
+
+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 */
+ u32 cur_pid = current->tgid;
+ u32 ret;
+ u64 vsize, physical;
+ unsigned long flags;
+ struct ehca_cq *cq;
+ struct ehca_qp *qp;
+ struct ehca_pd *pd;
+
+ switch (q_type) {
+ case 1: /* CQ */
+ spin_lock_irqsave(&ehca_cq_idr_lock, flags);
+ cq = idr_find(&ehca_cq_idr, idr_handle);
+ spin_unlock_irqrestore(&ehca_cq_idr_lock, flags);
+
+ /* make sure this mmap really belongs to the authorized user */
+ if (!cq)
+ return -EINVAL;
+
+ if (cq->ownpid != cur_pid) {
+ ehca_err(cq->ib_cq.device,
+ "Invalid caller pid=%x ownpid=%x",
+ cur_pid, cq->ownpid);
+ return -ENOMEM;
+ }
+
+ if (!cq->ib_cq.uobject || cq->ib_cq.uobject->context != context)
+ return -EINVAL;
+
+ switch (rsrc_type) {
+ case 1: /* galpa fw handle */
+ ehca_dbg(cq->ib_cq.device, "cq=%p cq triggerarea", cq);
+ vma->vm_flags |= VM_RESERVED;
+ vsize = vma->vm_end - vma->vm_start;
+ if (vsize != EHCA_PAGESIZE) {
+ ehca_err(cq->ib_cq.device, "invalid vsize=%lx",
+ vma->vm_end - vma->vm_start);
+ return -EINVAL;
+ }
+
+ physical = cq->galpas.user.fw_handle;
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ vma->vm_flags |= VM_IO | VM_RESERVED;
+
+ ehca_dbg(cq->ib_cq.device,
+ "vsize=%lx physical=%lx", vsize, physical);
+ ret = remap_pfn_range(vma, vma->vm_start,
+ physical >> PAGE_SHIFT, vsize,
+ vma->vm_page_prot);
+ if (ret) {
+ ehca_err(cq->ib_cq.device,
+ "remap_pfn_range() failed ret=%x",
+ ret);
+ return -ENOMEM;
+ }
+ break;
+
+ case 2: /* cq queue_addr */
+ ehca_dbg(cq->ib_cq.device, "cq=%p cq q_addr", cq);
+ vma->vm_flags |= VM_RESERVED;
+ vma->vm_ops = &ehcau_vm_ops;
+ break;
+
+ default:
+ ehca_err(cq->ib_cq.device, "bad resource type %x",
+ rsrc_type);
+ return -EINVAL;
+ }
+ break;
+
+ case 2: /* QP */
+ spin_lock_irqsave(&ehca_qp_idr_lock, flags);
+ qp = idr_find(&ehca_qp_idr, idr_handle);
+ spin_unlock_irqrestore(&ehca_qp_idr_lock, flags);
+
+ /* make sure this mmap really belongs to the authorized user */
+ if (!qp)
+ return -EINVAL;
+
+ pd = container_of(qp->ib_qp.pd, struct ehca_pd, ib_pd);
+ if (pd->ownpid != cur_pid) {
+ ehca_err(qp->ib_qp.device,
+ "Invalid caller pid=%x ownpid=%x",
+ cur_pid, pd->ownpid);
+ return -ENOMEM;
+ }
+
+ if (!qp->ib_qp.uobject || qp->ib_qp.uobject->context != context)
+ return -EINVAL;
+
+ switch (rsrc_type) {
+ case 1: /* galpa fw handle */
+ ehca_dbg(qp->ib_qp.device, "qp=%p qp triggerarea", qp);
+ vma->vm_flags |= VM_RESERVED;
+ vsize = vma->vm_end - vma->vm_start;
+ if (vsize != EHCA_PAGESIZE) {
+ ehca_err(qp->ib_qp.device, "invalid vsize=%lx",
+ vma->vm_end - vma->vm_start);
+ return -EINVAL;
+ }
+
+ physical = qp->galpas.user.fw_handle;
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ vma->vm_flags |= VM_IO | VM_RESERVED;
+
+ ehca_dbg(qp->ib_qp.device, "vsize=%lx physical=%lx",
+ vsize, physical);
+ ret = remap_pfn_range(vma, vma->vm_start,
+ physical >> PAGE_SHIFT, vsize,
+ vma->vm_page_prot);
+ if (ret) {
+ ehca_err(qp->ib_qp.device,
+ "remap_pfn_range() failed ret=%x",
+ ret);
+ return -ENOMEM;
+ }
+ break;
+
+ case 2: /* qp rqueue_addr */
+ ehca_dbg(qp->ib_qp.device, "qp=%p qp rqueue_addr", qp);
+ vma->vm_flags |= VM_RESERVED;
+ vma->vm_ops = &ehcau_vm_ops;
+ break;
+
+ case 3: /* qp squeue_addr */
+ ehca_dbg(qp->ib_qp.device, "qp=%p qp squeue_addr", qp);
+ vma->vm_flags |= VM_RESERVED;
+ vma->vm_ops = &ehcau_vm_ops;
+ break;
+
+ default:
+ ehca_err(qp->ib_qp.device, "bad resource type %x",
+ rsrc_type);
+ return -EINVAL;
+ }
+ break;
+
+ default:
+ ehca_gen_err("bad queue type %x", q_type);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+int ehca_mmap_nopage(u64 foffset, u64 length, void **mapped,
+ struct vm_area_struct **vma)
+{
+ down_write(¤t->mm->mmap_sem);
+ *mapped = (void*)do_mmap(NULL,0, length, PROT_WRITE,
+ MAP_SHARED | MAP_ANONYMOUS,
+ foffset);
+ up_write(¤t->mm->mmap_sem);
+ if (!(*mapped)) {
+ ehca_gen_err("couldn't mmap foffset=%lx length=%lx",
+ foffset, length);
+ return -EINVAL;
+ }
+
+ *vma = find_vma(current->mm, (u64)*mapped);
+ if (!(*vma)) {
+ down_write(¤t->mm->mmap_sem);
+ do_munmap(current->mm, 0, length);
+ up_write(¤t->mm->mmap_sem);
+ ehca_gen_err("couldn't find vma queue=%p", *mapped);
+ return -EINVAL;
+ }
+ (*vma)->vm_flags |= VM_RESERVED;
+ (*vma)->vm_ops = &ehcau_vm_ops;
+
+ return 0;
+}
+
+int ehca_mmap_register(u64 physical, void **mapped,
+ struct vm_area_struct **vma)
+{
+ int ret;
+ unsigned long vsize;
+ /* ehca hw supports only 4k page */
+ ret = ehca_mmap_nopage(0, EHCA_PAGESIZE, mapped, vma);
+ if (ret) {
+ ehca_gen_err("could'nt mmap physical=%lx", physical);
+ return ret;
+ }
+
+ (*vma)->vm_flags |= VM_RESERVED;
+ vsize = (*vma)->vm_end - (*vma)->vm_start;
+ if (vsize != EHCA_PAGESIZE) {
+ ehca_gen_err("invalid vsize=%lx",
+ (*vma)->vm_end - (*vma)->vm_start);
+ return -EINVAL;
+ }
+
+ (*vma)->vm_page_prot = pgprot_noncached((*vma)->vm_page_prot);
+ (*vma)->vm_flags |= VM_IO | VM_RESERVED;
+
+ ret = remap_pfn_range((*vma), (*vma)->vm_start,
+ physical >> PAGE_SHIFT, vsize,
+ (*vma)->vm_page_prot);
+ if (ret) {
+ ehca_gen_err("remap_pfn_range() failed ret=%x", ret);
+ return -ENOMEM;
+ }
+
+ return 0;
+
+}
+
+int ehca_munmap(unsigned long addr, size_t len) {
+ int ret = 0;
+ struct mm_struct *mm = current->mm;
+ if (mm) {
+ down_write(&mm->mmap_sem);
+ ret = do_munmap(mm, addr, len);
+ up_write(&mm->mmap_sem);
+ }
+ return ret;
+}
diff --git a/drivers/infiniband/hw/ehca/hcp_if.c b/drivers/infiniband/hw/ehca/hcp_if.c
new file mode 100644
index 0000000..3fb46e6
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/hcp_if.c
@@ -0,0 +1,874 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * Firmware Infiniband Interface code for POWER
+ *
+ * Authors: Christoph Raisch <raisch@de.ibm.com>
+ * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ * Gerd Bayer <gerd.bayer@de.ibm.com>
+ * Waleri Fomin <fomin@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <asm/hvcall.h>
+#include "ehca_tools.h"
+#include "hcp_if.h"
+#include "hcp_phyp.h"
+#include "hipz_fns.h"
+#include "ipz_pt_fn.h"
+
+#define H_ALL_RES_QP_ENHANCED_OPS EHCA_BMASK_IBM(9, 11)
+#define H_ALL_RES_QP_PTE_PIN EHCA_BMASK_IBM(12, 12)
+#define H_ALL_RES_QP_SERVICE_TYPE EHCA_BMASK_IBM(13, 15)
+#define H_ALL_RES_QP_LL_RQ_CQE_POSTING EHCA_BMASK_IBM(18, 18)
+#define H_ALL_RES_QP_LL_SQ_CQE_POSTING EHCA_BMASK_IBM(19, 21)
+#define H_ALL_RES_QP_SIGNALING_TYPE EHCA_BMASK_IBM(22, 23)
+#define H_ALL_RES_QP_UD_AV_LKEY_CTRL EHCA_BMASK_IBM(31, 31)
+#define H_ALL_RES_QP_RESOURCE_TYPE EHCA_BMASK_IBM(56, 63)
+
+#define H_ALL_RES_QP_MAX_OUTST_SEND_WR EHCA_BMASK_IBM(0, 15)
+#define H_ALL_RES_QP_MAX_OUTST_RECV_WR EHCA_BMASK_IBM(16, 31)
+#define H_ALL_RES_QP_MAX_SEND_SGE EHCA_BMASK_IBM(32, 39)
+#define H_ALL_RES_QP_MAX_RECV_SGE EHCA_BMASK_IBM(40, 47)
+
+#define H_ALL_RES_QP_ACT_OUTST_SEND_WR EHCA_BMASK_IBM(16, 31)
+#define H_ALL_RES_QP_ACT_OUTST_RECV_WR EHCA_BMASK_IBM(48, 63)
+#define H_ALL_RES_QP_ACT_SEND_SGE EHCA_BMASK_IBM(8, 15)
+#define H_ALL_RES_QP_ACT_RECV_SGE EHCA_BMASK_IBM(24, 31)
+
+#define H_ALL_RES_QP_SQUEUE_SIZE_PAGES EHCA_BMASK_IBM(0, 31)
+#define H_ALL_RES_QP_RQUEUE_SIZE_PAGES EHCA_BMASK_IBM(32, 63)
+
+/* direct access qp controls */
+#define DAQP_CTRL_ENABLE 0x01
+#define DAQP_CTRL_SEND_COMP 0x20
+#define DAQP_CTRL_RECV_COMP 0x40
+
+static u32 get_longbusy_msecs(int longbusy_rc)
+{
+ switch (longbusy_rc) {
+ case H_LONG_BUSY_ORDER_1_MSEC:
+ return 1;
+ case H_LONG_BUSY_ORDER_10_MSEC:
+ return 10;
+ case H_LONG_BUSY_ORDER_100_MSEC:
+ return 100;
+ case H_LONG_BUSY_ORDER_1_SEC:
+ return 1000;
+ case H_LONG_BUSY_ORDER_10_SEC:
+ return 10000;
+ case H_LONG_BUSY_ORDER_100_SEC:
+ return 100000;
+ default:
+ return 1;
+ }
+}
+
+static long ehca_plpar_hcall_norets(unsigned long opcode,
+ unsigned long arg1,
+ unsigned long arg2,
+ unsigned long arg3,
+ unsigned long arg4,
+ unsigned long arg5,
+ unsigned long arg6,
+ unsigned long arg7)
+{
+ long ret;
+ int i, sleep_msecs;
+
+ ehca_gen_dbg("opcode=%lx arg1=%lx arg2=%lx arg3=%lx arg4=%lx "
+ "arg5=%lx arg6=%lx arg7=%lx",
+ opcode, arg1, arg2, arg3, arg4, arg5, arg6, arg7);
+
+ for (i = 0; i < 5; i++) {
+ ret = plpar_hcall_norets(opcode, arg1, arg2, arg3, arg4,
+ arg5, arg6, arg7);
+
+ if (H_IS_LONG_BUSY(ret)) {
+ sleep_msecs = get_longbusy_msecs(ret);
+ msleep_interruptible(sleep_msecs);
+ continue;
+ }
+
+ if (ret < H_SUCCESS)
+ ehca_gen_err("opcode=%lx ret=%lx"
+ " arg1=%lx arg2=%lx arg3=%lx arg4=%lx"
+ " arg5=%lx arg6=%lx arg7=%lx ",
+ opcode, ret,
+ arg1, arg2, arg3, arg4, arg5,
+ arg6, arg7);
+
+ ehca_gen_dbg("opcode=%lx ret=%lx", opcode, ret);
+ return ret;
+
+ }
+
+ return H_BUSY;
+}
+
+static long ehca_plpar_hcall9(unsigned long opcode,
+ unsigned long *outs, /* array of 9 outputs */
+ unsigned long arg1,
+ unsigned long arg2,
+ unsigned long arg3,
+ unsigned long arg4,
+ unsigned long arg5,
+ unsigned long arg6,
+ unsigned long arg7,
+ unsigned long arg8,
+ unsigned long arg9)
+{
+ long ret;
+ int i, sleep_msecs;
+
+ ehca_gen_dbg("opcode=%lx arg1=%lx arg2=%lx arg3=%lx arg4=%lx "
+ "arg5=%lx arg6=%lx arg7=%lx arg8=%lx arg9=%lx",
+ opcode, arg1, arg2, arg3, arg4, arg5, arg6, arg7,
+ arg8, arg9);
+
+ for (i = 0; i < 5; i++) {
+ ret = plpar_hcall9(opcode, outs,
+ arg1, arg2, arg3, arg4, arg5,
+ arg6, arg7, arg8, arg9);
+
+ if (H_IS_LONG_BUSY(ret)) {
+ sleep_msecs = get_longbusy_msecs(ret);
+ msleep_interruptible(sleep_msecs);
+ continue;
+ }
+
+ if (ret < H_SUCCESS)
+ ehca_gen_err("opcode=%lx ret=%lx"
+ " arg1=%lx arg2=%lx arg3=%lx arg4=%lx"
+ " arg5=%lx arg6=%lx arg7=%lx arg8=%lx"
+ " arg9=%lx"
+ " out1=%lx out2=%lx out3=%lx out4=%lx"
+ " out5=%lx out6=%lx out7=%lx out8=%lx"
+ " out9=%lx",
+ opcode, ret,
+ arg1, arg2, arg3, arg4, arg5,
+ arg6, arg7, arg8, arg9,
+ outs[0], outs[1], outs[2], outs[3],
+ outs[4], outs[5], outs[6], outs[7],
+ outs[8]);
+
+ ehca_gen_dbg("opcode=%lx ret=%lx out1=%lx out2=%lx out3=%lx "
+ "out4=%lx out5=%lx out6=%lx out7=%lx out8=%lx "
+ "out9=%lx",
+ opcode, ret, outs[0], outs[1], outs[2], outs[3],
+ outs[4], outs[5], outs[6], outs[7], outs[8]);
+ return ret;
+
+ }
+
+ return H_BUSY;
+}
+u64 hipz_h_alloc_resource_eq(const struct ipz_adapter_handle adapter_handle,
+ struct ehca_pfeq *pfeq,
+ const u32 neq_control,
+ const u32 number_of_entries,
+ struct ipz_eq_handle *eq_handle,
+ u32 *act_nr_of_entries,
+ u32 *act_pages,
+ u32 *eq_ist)
+{
+ u64 ret;
+ u64 outs[PLPAR_HCALL9_BUFSIZE];
+ u64 allocate_controls;
+
+ /* resource type */
+ allocate_controls = 3ULL;
+
+ /* ISN is associated */
+ if (neq_control != 1)
+ allocate_controls = (1ULL << (63 - 7)) | allocate_controls;
+ else /* notification event queue */
+ allocate_controls = (1ULL << 63) | allocate_controls;
+
+ ret = ehca_plpar_hcall9(H_ALLOC_RESOURCE, outs,
+ adapter_handle.handle, /* r4 */
+ allocate_controls, /* r5 */
+ number_of_entries, /* r6 */
+ 0, 0, 0, 0, 0, 0);
+ eq_handle->handle = outs[0];
+ *act_nr_of_entries = (u32)outs[3];
+ *act_pages = (u32)outs[4];
+ *eq_ist = (u32)outs[5];
+
+ if (ret == H_NOT_ENOUGH_RESOURCES)
+ ehca_gen_err("Not enough resource - ret=%lx ", ret);
+
+ return ret;
+}
+
+u64 hipz_h_reset_event(const struct ipz_adapter_handle adapter_handle,
+ struct ipz_eq_handle eq_handle,
+ const u64 event_mask)
+{
+ return ehca_plpar_hcall_norets(H_RESET_EVENTS,
+ adapter_handle.handle, /* r4 */
+ eq_handle.handle, /* r5 */
+ event_mask, /* r6 */
+ 0, 0, 0, 0);
+}
+
+u64 hipz_h_alloc_resource_cq(const struct ipz_adapter_handle adapter_handle,
+ struct ehca_cq *cq,
+ struct ehca_alloc_cq_parms *param)
+{
+ u64 ret;
+ u64 outs[PLPAR_HCALL9_BUFSIZE];
+
+ ret = ehca_plpar_hcall9(H_ALLOC_RESOURCE, outs,
+ adapter_handle.handle, /* r4 */
+ 2, /* r5 */
+ param->eq_handle.handle, /* r6 */
+ cq->token, /* r7 */
+ param->nr_cqe, /* r8 */
+ 0, 0, 0, 0);
+ cq->ipz_cq_handle.handle = outs[0];
+ param->act_nr_of_entries = (u32)outs[3];
+ param->act_pages = (u32)outs[4];
+
+ if (ret == H_SUCCESS)
+ hcp_galpas_ctor(&cq->galpas, outs[5], outs[6]);
+
+ if (ret == H_NOT_ENOUGH_RESOURCES)
+ ehca_gen_err("Not enough resources. ret=%lx", ret);
+
+ return ret;
+}
+
+u64 hipz_h_alloc_resource_qp(const struct ipz_adapter_handle adapter_handle,
+ struct ehca_qp *qp,
+ struct ehca_alloc_qp_parms *parms)
+{
+ u64 ret;
+ u64 allocate_controls;
+ u64 max_r10_reg;
+ u64 outs[PLPAR_HCALL9_BUFSIZE];
+ u16 max_nr_receive_wqes = qp->init_attr.cap.max_recv_wr + 1;
+ u16 max_nr_send_wqes = qp->init_attr.cap.max_send_wr + 1;
+ int daqp_ctrl = parms->daqp_ctrl;
+
+ allocate_controls =
+ EHCA_BMASK_SET(H_ALL_RES_QP_ENHANCED_OPS,
+ (daqp_ctrl & DAQP_CTRL_ENABLE) ? 1 : 0)
+ | EHCA_BMASK_SET(H_ALL_RES_QP_PTE_PIN, 0)
+ | EHCA_BMASK_SET(H_ALL_RES_QP_SERVICE_TYPE, parms->servicetype)
+ | EHCA_BMASK_SET(H_ALL_RES_QP_SIGNALING_TYPE, parms->sigtype)
+ | EHCA_BMASK_SET(H_ALL_RES_QP_LL_RQ_CQE_POSTING,
+ (daqp_ctrl & DAQP_CTRL_RECV_COMP) ? 1 : 0)
+ | EHCA_BMASK_SET(H_ALL_RES_QP_LL_SQ_CQE_POSTING,
+ (daqp_ctrl & DAQP_CTRL_SEND_COMP) ? 1 : 0)
+ | EHCA_BMASK_SET(H_ALL_RES_QP_UD_AV_LKEY_CTRL,
+ parms->ud_av_l_key_ctl)
+ | EHCA_BMASK_SET(H_ALL_RES_QP_RESOURCE_TYPE, 1);
+
+ max_r10_reg =
+ EHCA_BMASK_SET(H_ALL_RES_QP_MAX_OUTST_SEND_WR,
+ max_nr_send_wqes)
+ | EHCA_BMASK_SET(H_ALL_RES_QP_MAX_OUTST_RECV_WR,
+ max_nr_receive_wqes)
+ | EHCA_BMASK_SET(H_ALL_RES_QP_MAX_SEND_SGE,
+ parms->max_send_sge)
+ | EHCA_BMASK_SET(H_ALL_RES_QP_MAX_RECV_SGE,
+ parms->max_recv_sge);
+
+ ret = ehca_plpar_hcall9(H_ALLOC_RESOURCE, outs,
+ adapter_handle.handle, /* r4 */
+ allocate_controls, /* r5 */
+ qp->send_cq->ipz_cq_handle.handle,
+ qp->recv_cq->ipz_cq_handle.handle,
+ parms->ipz_eq_handle.handle,
+ ((u64)qp->token << 32) | parms->pd.value,
+ max_r10_reg, /* r10 */
+ parms->ud_av_l_key_ctl, /* r11 */
+ 0);
+ qp->ipz_qp_handle.handle = outs[0];
+ qp->real_qp_num = (u32)outs[1];
+ parms->act_nr_send_sges =
+ (u16)EHCA_BMASK_GET(H_ALL_RES_QP_ACT_OUTST_SEND_WR, outs[2]);
+ parms->act_nr_recv_wqes =
+ (u16)EHCA_BMASK_GET(H_ALL_RES_QP_ACT_OUTST_RECV_WR, outs[2]);
+ parms->act_nr_send_sges =
+ (u8)EHCA_BMASK_GET(H_ALL_RES_QP_ACT_SEND_SGE, outs[3]);
+ parms->act_nr_recv_sges =
+ (u8)EHCA_BMASK_GET(H_ALL_RES_QP_ACT_RECV_SGE, outs[3]);
+ parms->nr_sq_pages =
+ (u32)EHCA_BMASK_GET(H_ALL_RES_QP_SQUEUE_SIZE_PAGES, outs[4]);
+ parms->nr_rq_pages =
+ (u32)EHCA_BMASK_GET(H_ALL_RES_QP_RQUEUE_SIZE_PAGES, outs[4]);
+
+ if (ret == H_SUCCESS)
+ hcp_galpas_ctor(&qp->galpas, outs[6], outs[6]);
+
+ if (ret == H_NOT_ENOUGH_RESOURCES)
+ ehca_gen_err("Not enough resources. ret=%lx", ret);
+
+ return ret;
+}
+
+u64 hipz_h_query_port(const struct ipz_adapter_handle adapter_handle,
+ const u8 port_id,
+ struct hipz_query_port *query_port_response_block)
+{
+ u64 ret;
+ u64 r_cb = virt_to_abs(query_port_response_block);
+
+ if (r_cb & (EHCA_PAGESIZE-1)) {
+ ehca_gen_err("response block not page aligned");
+ return H_PARAMETER;
+ }
+
+ ret = ehca_plpar_hcall_norets(H_QUERY_PORT,
+ adapter_handle.handle, /* r4 */
+ port_id, /* r5 */
+ r_cb, /* r6 */
+ 0, 0, 0, 0);
+
+ if (ehca_debug_level)
+ ehca_dmp(query_port_response_block, 64, "response_block");
+
+ return ret;
+}
+
+u64 hipz_h_query_hca(const struct ipz_adapter_handle adapter_handle,
+ struct hipz_query_hca *query_hca_rblock)
+{
+ u64 r_cb = virt_to_abs(query_hca_rblock);
+
+ if (r_cb & (EHCA_PAGESIZE-1)) {
+ ehca_gen_err("response_block=%p not page aligned",
+ query_hca_rblock);
+ return H_PARAMETER;
+ }
+
+ return ehca_plpar_hcall_norets(H_QUERY_HCA,
+ adapter_handle.handle, /* r4 */
+ r_cb, /* r5 */
+ 0, 0, 0, 0, 0);
+}
+
+u64 hipz_h_register_rpage(const struct ipz_adapter_handle adapter_handle,
+ const u8 pagesize,
+ const u8 queue_type,
+ const u64 resource_handle,
+ const u64 logical_address_of_page,
+ u64 count)
+{
+ return ehca_plpar_hcall_norets(H_REGISTER_RPAGES,
+ adapter_handle.handle, /* r4 */
+ queue_type | pagesize << 8, /* r5 */
+ resource_handle, /* r6 */
+ logical_address_of_page, /* r7 */
+ count, /* r8 */
+ 0, 0);
+}
+
+u64 hipz_h_register_rpage_eq(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_eq_handle eq_handle,
+ struct ehca_pfeq *pfeq,
+ const u8 pagesize,
+ const u8 queue_type,
+ const u64 logical_address_of_page,
+ const u64 count)
+{
+ if (count != 1) {
+ ehca_gen_err("Ppage counter=%lx", count);
+ return H_PARAMETER;
+ }
+ return hipz_h_register_rpage(adapter_handle,
+ pagesize,
+ queue_type,
+ eq_handle.handle,
+ logical_address_of_page, count);
+}
+
+u64 hipz_h_query_int_state(const struct ipz_adapter_handle adapter_handle,
+ u32 ist)
+{
+ u64 ret;
+ ret = ehca_plpar_hcall_norets(H_QUERY_INT_STATE,
+ adapter_handle.handle, /* r4 */
+ ist, /* r5 */
+ 0, 0, 0, 0, 0);
+
+ if (ret != H_SUCCESS && ret != H_BUSY)
+ ehca_gen_err("Could not query interrupt state.");
+
+ return ret;
+}
+
+u64 hipz_h_register_rpage_cq(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_cq_handle cq_handle,
+ struct ehca_pfcq *pfcq,
+ const u8 pagesize,
+ const u8 queue_type,
+ const u64 logical_address_of_page,
+ const u64 count,
+ const struct h_galpa gal)
+{
+ if (count != 1) {
+ ehca_gen_err("Page counter=%lx", count);
+ return H_PARAMETER;
+ }
+
+ return hipz_h_register_rpage(adapter_handle, pagesize, queue_type,
+ cq_handle.handle, logical_address_of_page,
+ count);
+}
+
+u64 hipz_h_register_rpage_qp(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_qp_handle qp_handle,
+ struct ehca_pfqp *pfqp,
+ const u8 pagesize,
+ const u8 queue_type,
+ const u64 logical_address_of_page,
+ const u64 count,
+ const struct h_galpa galpa)
+{
+ if (count != 1) {
+ ehca_gen_err("Page counter=%lx", count);
+ return H_PARAMETER;
+ }
+
+ return hipz_h_register_rpage(adapter_handle,pagesize,queue_type,
+ qp_handle.handle,logical_address_of_page,
+ count);
+}
+
+u64 hipz_h_disable_and_get_wqe(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_qp_handle qp_handle,
+ struct ehca_pfqp *pfqp,
+ void **log_addr_next_sq_wqe2processed,
+ void **log_addr_next_rq_wqe2processed,
+ int dis_and_get_function_code)
+{
+ u64 ret;
+ u64 outs[PLPAR_HCALL9_BUFSIZE];
+
+ ret = ehca_plpar_hcall9(H_DISABLE_AND_GETC, outs,
+ adapter_handle.handle, /* r4 */
+ dis_and_get_function_code, /* r5 */
+ qp_handle.handle, /* r6 */
+ 0, 0, 0, 0, 0, 0);
+ if (log_addr_next_sq_wqe2processed)
+ *log_addr_next_sq_wqe2processed = (void*)outs[0];
+ if (log_addr_next_rq_wqe2processed)
+ *log_addr_next_rq_wqe2processed = (void*)outs[1];
+
+ return ret;
+}
+
+u64 hipz_h_modify_qp(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_qp_handle qp_handle,
+ struct ehca_pfqp *pfqp,
+ const u64 update_mask,
+ struct hcp_modify_qp_control_block *mqpcb,
+ struct h_galpa gal)
+{
+ u64 ret;
+ u64 outs[PLPAR_HCALL9_BUFSIZE];
+ ret = ehca_plpar_hcall9(H_MODIFY_QP, outs,
+ adapter_handle.handle, /* r4 */
+ qp_handle.handle, /* r5 */
+ update_mask, /* r6 */
+ virt_to_abs(mqpcb), /* r7 */
+ 0, 0, 0, 0, 0);
+
+ if (ret == H_NOT_ENOUGH_RESOURCES)
+ ehca_gen_err("Insufficient resources ret=%lx", ret);
+
+ return ret;
+}
+
+u64 hipz_h_query_qp(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_qp_handle qp_handle,
+ struct ehca_pfqp *pfqp,
+ struct hcp_modify_qp_control_block *qqpcb,
+ struct h_galpa gal)
+{
+ return ehca_plpar_hcall_norets(H_QUERY_QP,
+ adapter_handle.handle, /* r4 */
+ qp_handle.handle, /* r5 */
+ virt_to_abs(qqpcb), /* r6 */
+ 0, 0, 0, 0);
+}
+
+u64 hipz_h_destroy_qp(const struct ipz_adapter_handle adapter_handle,
+ struct ehca_qp *qp)
+{
+ u64 ret;
+ u64 outs[PLPAR_HCALL9_BUFSIZE];
+
+ ret = hcp_galpas_dtor(&qp->galpas);
+ if (ret) {
+ ehca_gen_err("Could not destruct qp->galpas");
+ return H_RESOURCE;
+ }
+ ret = ehca_plpar_hcall9(H_DISABLE_AND_GETC, outs,
+ adapter_handle.handle, /* r4 */
+ /* function code */
+ 1, /* r5 */
+ qp->ipz_qp_handle.handle, /* r6 */
+ 0, 0, 0, 0, 0, 0);
+ if (ret == H_HARDWARE)
+ ehca_gen_err("HCA not operational. ret=%lx", ret);
+
+ ret = ehca_plpar_hcall_norets(H_FREE_RESOURCE,
+ adapter_handle.handle, /* r4 */
+ qp->ipz_qp_handle.handle, /* r5 */
+ 0, 0, 0, 0, 0);
+
+ if (ret == H_RESOURCE)
+ ehca_gen_err("Resource still in use. ret=%lx", ret);
+
+ return ret;
+}
+
+u64 hipz_h_define_aqp0(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_qp_handle qp_handle,
+ struct h_galpa gal,
+ u32 port)
+{
+ return ehca_plpar_hcall_norets(H_DEFINE_AQP0,
+ adapter_handle.handle, /* r4 */
+ qp_handle.handle, /* r5 */
+ port, /* r6 */
+ 0, 0, 0, 0);
+}
+
+u64 hipz_h_define_aqp1(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_qp_handle qp_handle,
+ struct h_galpa gal,
+ u32 port, u32 * pma_qp_nr,
+ u32 * bma_qp_nr)
+{
+ u64 ret;
+ u64 outs[PLPAR_HCALL9_BUFSIZE];
+
+ ret = ehca_plpar_hcall9(H_DEFINE_AQP1, outs,
+ adapter_handle.handle, /* r4 */
+ qp_handle.handle, /* r5 */
+ port, /* r6 */
+ 0, 0, 0, 0, 0, 0);
+ *pma_qp_nr = (u32)outs[0];
+ *bma_qp_nr = (u32)outs[1];
+
+ if (ret == H_ALIAS_EXIST)
+ ehca_gen_err("AQP1 already exists. ret=%lx", ret);
+
+ return ret;
+}
+
+u64 hipz_h_attach_mcqp(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_qp_handle qp_handle,
+ struct h_galpa gal,
+ u16 mcg_dlid,
+ u64 subnet_prefix, u64 interface_id)
+{
+ u64 ret;
+
+ ret = ehca_plpar_hcall_norets(H_ATTACH_MCQP,
+ adapter_handle.handle, /* r4 */
+ qp_handle.handle, /* r5 */
+ mcg_dlid, /* r6 */
+ interface_id, /* r7 */
+ subnet_prefix, /* r8 */
+ 0, 0);
+
+ if (ret == H_NOT_ENOUGH_RESOURCES)
+ ehca_gen_err("Not enough resources. ret=%lx", ret);
+
+ return ret;
+}
+
+u64 hipz_h_detach_mcqp(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_qp_handle qp_handle,
+ struct h_galpa gal,
+ u16 mcg_dlid,
+ u64 subnet_prefix, u64 interface_id)
+{
+ return ehca_plpar_hcall_norets(H_DETACH_MCQP,
+ adapter_handle.handle, /* r4 */
+ qp_handle.handle, /* r5 */
+ mcg_dlid, /* r6 */
+ interface_id, /* r7 */
+ subnet_prefix, /* r8 */
+ 0, 0);
+}
+
+u64 hipz_h_destroy_cq(const struct ipz_adapter_handle adapter_handle,
+ struct ehca_cq *cq,
+ u8 force_flag)
+{
+ u64 ret;
+
+ ret = hcp_galpas_dtor(&cq->galpas);
+ if (ret) {
+ ehca_gen_err("Could not destruct cp->galpas");
+ return H_RESOURCE;
+ }
+
+ ret = ehca_plpar_hcall_norets(H_FREE_RESOURCE,
+ adapter_handle.handle, /* r4 */
+ cq->ipz_cq_handle.handle, /* r5 */
+ force_flag != 0 ? 1L : 0L, /* r6 */
+ 0, 0, 0, 0);
+
+ if (ret == H_RESOURCE)
+ ehca_gen_err("H_FREE_RESOURCE failed ret=%lx ", ret);
+
+ return ret;
+}
+
+u64 hipz_h_destroy_eq(const struct ipz_adapter_handle adapter_handle,
+ struct ehca_eq *eq)
+{
+ u64 ret;
+
+ ret = hcp_galpas_dtor(&eq->galpas);
+ if (ret) {
+ ehca_gen_err("Could not destruct eq->galpas");
+ return H_RESOURCE;
+ }
+
+ ret = ehca_plpar_hcall_norets(H_FREE_RESOURCE,
+ adapter_handle.handle, /* r4 */
+ eq->ipz_eq_handle.handle, /* r5 */
+ 0, 0, 0, 0, 0);
+
+ if (ret == H_RESOURCE)
+ ehca_gen_err("Resource in use. ret=%lx ", ret);
+
+ return ret;
+}
+
+u64 hipz_h_alloc_resource_mr(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mr *mr,
+ const u64 vaddr,
+ const u64 length,
+ const u32 access_ctrl,
+ const struct ipz_pd pd,
+ struct ehca_mr_hipzout_parms *outparms)
+{
+ u64 ret;
+ u64 outs[PLPAR_HCALL9_BUFSIZE];
+
+ ret = ehca_plpar_hcall9(H_ALLOC_RESOURCE, outs,
+ adapter_handle.handle, /* r4 */
+ 5, /* r5 */
+ vaddr, /* r6 */
+ length, /* r7 */
+ (((u64)access_ctrl) << 32ULL), /* r8 */
+ pd.value, /* r9 */
+ 0, 0, 0);
+ outparms->handle.handle = outs[0];
+ outparms->lkey = (u32)outs[2];
+ outparms->rkey = (u32)outs[3];
+
+ return ret;
+}
+
+u64 hipz_h_register_rpage_mr(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mr *mr,
+ const u8 pagesize,
+ const u8 queue_type,
+ const u64 logical_address_of_page,
+ const u64 count)
+{
+ u64 ret;
+
+ if ((count > 1) && (logical_address_of_page & (EHCA_PAGESIZE-1))) {
+ ehca_gen_err("logical_address_of_page not on a 4k boundary "
+ "adapter_handle=%lx mr=%p mr_handle=%lx "
+ "pagesize=%x queue_type=%x "
+ "logical_address_of_page=%lx count=%lx",
+ adapter_handle.handle, mr,
+ mr->ipz_mr_handle.handle, pagesize, queue_type,
+ logical_address_of_page, count);
+ ret = H_PARAMETER;
+ } else
+ ret = hipz_h_register_rpage(adapter_handle, pagesize,
+ queue_type,
+ mr->ipz_mr_handle.handle,
+ logical_address_of_page, count);
+ return ret;
+}
+
+u64 hipz_h_query_mr(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mr *mr,
+ struct ehca_mr_hipzout_parms *outparms)
+{
+ u64 ret;
+ u64 outs[PLPAR_HCALL9_BUFSIZE];
+
+ ret = ehca_plpar_hcall9(H_QUERY_MR, outs,
+ adapter_handle.handle, /* r4 */
+ mr->ipz_mr_handle.handle, /* r5 */
+ 0, 0, 0, 0, 0, 0, 0);
+ outparms->len = outs[0];
+ outparms->vaddr = outs[1];
+ outparms->acl = outs[4] >> 32;
+ outparms->lkey = (u32)(outs[5] >> 32);
+ outparms->rkey = (u32)(outs[5] & (0xffffffff));
+
+ return ret;
+}
+
+u64 hipz_h_free_resource_mr(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mr *mr)
+{
+ return ehca_plpar_hcall_norets(H_FREE_RESOURCE,
+ adapter_handle.handle, /* r4 */
+ mr->ipz_mr_handle.handle, /* r5 */
+ 0, 0, 0, 0, 0);
+}
+
+u64 hipz_h_reregister_pmr(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mr *mr,
+ const u64 vaddr_in,
+ const u64 length,
+ const u32 access_ctrl,
+ const struct ipz_pd pd,
+ const u64 mr_addr_cb,
+ struct ehca_mr_hipzout_parms *outparms)
+{
+ u64 ret;
+ u64 outs[PLPAR_HCALL9_BUFSIZE];
+
+ ret = ehca_plpar_hcall9(H_REREGISTER_PMR, outs,
+ adapter_handle.handle, /* r4 */
+ mr->ipz_mr_handle.handle, /* r5 */
+ vaddr_in, /* r6 */
+ length, /* r7 */
+ /* r8 */
+ ((((u64)access_ctrl) << 32ULL) | pd.value),
+ mr_addr_cb, /* r9 */
+ 0, 0, 0);
+ outparms->vaddr = outs[1];
+ outparms->lkey = (u32)outs[2];
+ outparms->rkey = (u32)outs[3];
+
+ return ret;
+}
+
+u64 hipz_h_register_smr(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mr *mr,
+ const struct ehca_mr *orig_mr,
+ const u64 vaddr_in,
+ const u32 access_ctrl,
+ const struct ipz_pd pd,
+ struct ehca_mr_hipzout_parms *outparms)
+{
+ u64 ret;
+ u64 outs[PLPAR_HCALL9_BUFSIZE];
+
+ ret = ehca_plpar_hcall9(H_REGISTER_SMR, outs,
+ adapter_handle.handle, /* r4 */
+ orig_mr->ipz_mr_handle.handle, /* r5 */
+ vaddr_in, /* r6 */
+ (((u64)access_ctrl) << 32ULL), /* r7 */
+ pd.value, /* r8 */
+ 0, 0, 0, 0);
+ outparms->handle.handle = outs[0];
+ outparms->lkey = (u32)outs[2];
+ outparms->rkey = (u32)outs[3];
+
+ return ret;
+}
+
+u64 hipz_h_alloc_resource_mw(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mw *mw,
+ const struct ipz_pd pd,
+ struct ehca_mw_hipzout_parms *outparms)
+{
+ u64 ret;
+ u64 outs[PLPAR_HCALL9_BUFSIZE];
+
+ ret = ehca_plpar_hcall9(H_ALLOC_RESOURCE, outs,
+ adapter_handle.handle, /* r4 */
+ 6, /* r5 */
+ pd.value, /* r6 */
+ 0, 0, 0, 0, 0, 0);
+ outparms->handle.handle = outs[0];
+ outparms->rkey = (u32)outs[3];
+
+ return ret;
+}
+
+u64 hipz_h_query_mw(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mw *mw,
+ struct ehca_mw_hipzout_parms *outparms)
+{
+ u64 ret;
+ u64 outs[PLPAR_HCALL9_BUFSIZE];
+
+ ret = ehca_plpar_hcall9(H_QUERY_MW, outs,
+ adapter_handle.handle, /* r4 */
+ mw->ipz_mw_handle.handle, /* r5 */
+ 0, 0, 0, 0, 0, 0, 0);
+ outparms->rkey = (u32)outs[3];
+
+ return ret;
+}
+
+u64 hipz_h_free_resource_mw(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mw *mw)
+{
+ return ehca_plpar_hcall_norets(H_FREE_RESOURCE,
+ adapter_handle.handle, /* r4 */
+ mw->ipz_mw_handle.handle, /* r5 */
+ 0, 0, 0, 0, 0);
+}
+
+u64 hipz_h_error_data(const struct ipz_adapter_handle adapter_handle,
+ const u64 ressource_handle,
+ void *rblock,
+ unsigned long *byte_count)
+{
+ u64 r_cb = virt_to_abs(rblock);
+
+ if (r_cb & (EHCA_PAGESIZE-1)) {
+ ehca_gen_err("rblock not page aligned.");
+ return H_PARAMETER;
+ }
+
+ return ehca_plpar_hcall_norets(H_ERROR_DATA,
+ adapter_handle.handle,
+ ressource_handle,
+ r_cb,
+ 0, 0, 0, 0);
+}
diff --git a/drivers/infiniband/hw/ehca/hcp_if.h b/drivers/infiniband/hw/ehca/hcp_if.h
new file mode 100644
index 0000000..587ebd4
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/hcp_if.h
@@ -0,0 +1,261 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * Firmware Infiniband Interface code for POWER
+ *
+ * Authors: Christoph Raisch <raisch@de.ibm.com>
+ * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ * Gerd Bayer <gerd.bayer@de.ibm.com>
+ * Waleri Fomin <fomin@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __HCP_IF_H__
+#define __HCP_IF_H__
+
+#include "ehca_classes.h"
+#include "ehca_tools.h"
+#include "hipz_hw.h"
+
+/*
+ * hipz_h_alloc_resource_eq allocates EQ resources in HW and FW, initalize
+ * resources, create the empty EQPT (ring).
+ */
+u64 hipz_h_alloc_resource_eq(const struct ipz_adapter_handle adapter_handle,
+ struct ehca_pfeq *pfeq,
+ const u32 neq_control,
+ const u32 number_of_entries,
+ struct ipz_eq_handle *eq_handle,
+ u32 * act_nr_of_entries,
+ u32 * act_pages,
+ u32 * eq_ist);
+
+u64 hipz_h_reset_event(const struct ipz_adapter_handle adapter_handle,
+ struct ipz_eq_handle eq_handle,
+ const u64 event_mask);
+/*
+ * hipz_h_allocate_resource_cq allocates CQ resources in HW and FW, initialize
+ * resources, create the empty CQPT (ring).
+ */
+u64 hipz_h_alloc_resource_cq(const struct ipz_adapter_handle adapter_handle,
+ struct ehca_cq *cq,
+ struct ehca_alloc_cq_parms *param);
+
+
+/*
+ * hipz_h_alloc_resource_qp allocates QP resources in HW and FW,
+ * initialize resources, create empty QPPTs (2 rings).
+ */
+u64 hipz_h_alloc_resource_qp(const struct ipz_adapter_handle adapter_handle,
+ struct ehca_qp *qp,
+ struct ehca_alloc_qp_parms *parms);
+
+u64 hipz_h_query_port(const struct ipz_adapter_handle adapter_handle,
+ const u8 port_id,
+ struct hipz_query_port *query_port_response_block);
+
+u64 hipz_h_query_hca(const struct ipz_adapter_handle adapter_handle,
+ struct hipz_query_hca *query_hca_rblock);
+
+/*
+ * hipz_h_register_rpage internal function in hcp_if.h for all
+ * hcp_H_REGISTER_RPAGE calls.
+ */
+u64 hipz_h_register_rpage(const struct ipz_adapter_handle adapter_handle,
+ const u8 pagesize,
+ const u8 queue_type,
+ const u64 resource_handle,
+ const u64 logical_address_of_page,
+ u64 count);
+
+u64 hipz_h_register_rpage_eq(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_eq_handle eq_handle,
+ struct ehca_pfeq *pfeq,
+ const u8 pagesize,
+ const u8 queue_type,
+ const u64 logical_address_of_page,
+ const u64 count);
+
+u64 hipz_h_query_int_state(const struct ipz_adapter_handle
+ hcp_adapter_handle,
+ u32 ist);
+
+u64 hipz_h_register_rpage_cq(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_cq_handle cq_handle,
+ struct ehca_pfcq *pfcq,
+ const u8 pagesize,
+ const u8 queue_type,
+ const u64 logical_address_of_page,
+ const u64 count,
+ const struct h_galpa gal);
+
+u64 hipz_h_register_rpage_qp(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_qp_handle qp_handle,
+ struct ehca_pfqp *pfqp,
+ const u8 pagesize,
+ const u8 queue_type,
+ const u64 logical_address_of_page,
+ const u64 count,
+ const struct h_galpa galpa);
+
+u64 hipz_h_disable_and_get_wqe(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_qp_handle qp_handle,
+ struct ehca_pfqp *pfqp,
+ void **log_addr_next_sq_wqe_tb_processed,
+ void **log_addr_next_rq_wqe_tb_processed,
+ int dis_and_get_function_code);
+enum hcall_sigt {
+ HCALL_SIGT_NO_CQE = 0,
+ HCALL_SIGT_BY_WQE = 1,
+ HCALL_SIGT_EVERY = 2
+};
+
+u64 hipz_h_modify_qp(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_qp_handle qp_handle,
+ struct ehca_pfqp *pfqp,
+ const u64 update_mask,
+ struct hcp_modify_qp_control_block *mqpcb,
+ struct h_galpa gal);
+
+u64 hipz_h_query_qp(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_qp_handle qp_handle,
+ struct ehca_pfqp *pfqp,
+ struct hcp_modify_qp_control_block *qqpcb,
+ struct h_galpa gal);
+
+u64 hipz_h_destroy_qp(const struct ipz_adapter_handle adapter_handle,
+ struct ehca_qp *qp);
+
+u64 hipz_h_define_aqp0(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_qp_handle qp_handle,
+ struct h_galpa gal,
+ u32 port);
+
+u64 hipz_h_define_aqp1(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_qp_handle qp_handle,
+ struct h_galpa gal,
+ u32 port, u32 * pma_qp_nr,
+ u32 * bma_qp_nr);
+
+u64 hipz_h_attach_mcqp(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_qp_handle qp_handle,
+ struct h_galpa gal,
+ u16 mcg_dlid,
+ u64 subnet_prefix, u64 interface_id);
+
+u64 hipz_h_detach_mcqp(const struct ipz_adapter_handle adapter_handle,
+ const struct ipz_qp_handle qp_handle,
+ struct h_galpa gal,
+ u16 mcg_dlid,
+ u64 subnet_prefix, u64 interface_id);
+
+u64 hipz_h_destroy_cq(const struct ipz_adapter_handle adapter_handle,
+ struct ehca_cq *cq,
+ u8 force_flag);
+
+u64 hipz_h_destroy_eq(const struct ipz_adapter_handle adapter_handle,
+ struct ehca_eq *eq);
+
+/*
+ * hipz_h_alloc_resource_mr allocates MR resources in HW and FW, initialize
+ * resources.
+ */
+u64 hipz_h_alloc_resource_mr(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mr *mr,
+ const u64 vaddr,
+ const u64 length,
+ const u32 access_ctrl,
+ const struct ipz_pd pd,
+ struct ehca_mr_hipzout_parms *outparms);
+
+/* hipz_h_register_rpage_mr registers MR resource pages in HW and FW */
+u64 hipz_h_register_rpage_mr(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mr *mr,
+ const u8 pagesize,
+ const u8 queue_type,
+ const u64 logical_address_of_page,
+ const u64 count);
+
+/* hipz_h_query_mr queries MR in HW and FW */
+u64 hipz_h_query_mr(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mr *mr,
+ struct ehca_mr_hipzout_parms *outparms);
+
+/* hipz_h_free_resource_mr frees MR resources in HW and FW */
+u64 hipz_h_free_resource_mr(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mr *mr);
+
+/* hipz_h_reregister_pmr reregisters MR in HW and FW */
+u64 hipz_h_reregister_pmr(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mr *mr,
+ const u64 vaddr_in,
+ const u64 length,
+ const u32 access_ctrl,
+ const struct ipz_pd pd,
+ const u64 mr_addr_cb,
+ struct ehca_mr_hipzout_parms *outparms);
+
+/* hipz_h_register_smr register shared MR in HW and FW */
+u64 hipz_h_register_smr(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mr *mr,
+ const struct ehca_mr *orig_mr,
+ const u64 vaddr_in,
+ const u32 access_ctrl,
+ const struct ipz_pd pd,
+ struct ehca_mr_hipzout_parms *outparms);
+
+/*
+ * hipz_h_alloc_resource_mw allocates MW resources in HW and FW, initialize
+ * resources.
+ */
+u64 hipz_h_alloc_resource_mw(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mw *mw,
+ const struct ipz_pd pd,
+ struct ehca_mw_hipzout_parms *outparms);
+
+/* hipz_h_query_mw queries MW in HW and FW */
+u64 hipz_h_query_mw(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mw *mw,
+ struct ehca_mw_hipzout_parms *outparms);
+
+/* hipz_h_free_resource_mw frees MW resources in HW and FW */
+u64 hipz_h_free_resource_mw(const struct ipz_adapter_handle adapter_handle,
+ const struct ehca_mw *mw);
+
+u64 hipz_h_error_data(const struct ipz_adapter_handle adapter_handle,
+ const u64 ressource_handle,
+ void *rblock,
+ unsigned long *byte_count);
+
+#endif /* __HCP_IF_H__ */
diff --git a/drivers/infiniband/hw/ehca/hcp_phyp.c b/drivers/infiniband/hw/ehca/hcp_phyp.c
new file mode 100644
index 0000000..0b1a477
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/hcp_phyp.c
@@ -0,0 +1,80 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * load store abstraction for ehca register access with tracing
+ *
+ * Authors: Christoph Raisch <raisch@de.ibm.com>
+ * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "ehca_classes.h"
+#include "hipz_hw.h"
+
+int hcall_map_page(u64 physaddr, u64 *mapaddr)
+{
+ *mapaddr = (u64)(ioremap(physaddr, EHCA_PAGESIZE));
+ return 0;
+}
+
+int hcall_unmap_page(u64 mapaddr)
+{
+ iounmap((volatile void __iomem*)mapaddr);
+ return 0;
+}
+
+int hcp_galpas_ctor(struct h_galpas *galpas,
+ u64 paddr_kernel, u64 paddr_user)
+{
+ int ret = hcall_map_page(paddr_kernel, &galpas->kernel.fw_handle);
+ if (ret)
+ return ret;
+
+ galpas->user.fw_handle = paddr_user;
+
+ return 0;
+}
+
+int hcp_galpas_dtor(struct h_galpas *galpas)
+{
+ if (galpas->kernel.fw_handle) {
+ int ret = hcall_unmap_page(galpas->kernel.fw_handle);
+ if (ret)
+ return ret;
+ }
+
+ galpas->user.fw_handle = galpas->kernel.fw_handle = 0;
+
+ return 0;
+}
diff --git a/drivers/infiniband/hw/ehca/hcp_phyp.h b/drivers/infiniband/hw/ehca/hcp_phyp.h
new file mode 100644
index 0000000..5305c2a
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/hcp_phyp.h
@@ -0,0 +1,90 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * Firmware calls
+ *
+ * Authors: Christoph Raisch <raisch@de.ibm.com>
+ * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ * Waleri Fomin <fomin@de.ibm.com>
+ * Gerd Bayer <gerd.bayer@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __HCP_PHYP_H__
+#define __HCP_PHYP_H__
+
+
+/*
+ * eHCA page (mapped into memory)
+ * resource to access eHCA register pages in CPU address space
+*/
+struct h_galpa {
+ u64 fw_handle;
+ /* for pSeries this is a 64bit memory address where
+ I/O memory is mapped into CPU address space (kv) */
+};
+
+/*
+ * resource to access eHCA address space registers, all types
+ */
+struct h_galpas {
+ u32 pid; /*PID of userspace galpa checking */
+ struct h_galpa user; /* user space accessible resource,
+ set to 0 if unused */
+ struct h_galpa kernel; /* kernel space accessible resource,
+ set to 0 if unused */
+};
+
+static inline u64 hipz_galpa_load(struct h_galpa galpa, u32 offset)
+{
+ u64 addr = galpa.fw_handle + offset;
+ return *(volatile u64 __force *)addr;
+}
+
+static inline void hipz_galpa_store(struct h_galpa galpa, u32 offset, u64 value)
+{
+ u64 addr = galpa.fw_handle + offset;
+ *(volatile u64 __force *)addr = value;
+}
+
+int hcp_galpas_ctor(struct h_galpas *galpas,
+ u64 paddr_kernel, u64 paddr_user);
+
+int hcp_galpas_dtor(struct h_galpas *galpas);
+
+int hcall_map_page(u64 physaddr, u64 * mapaddr);
+
+int hcall_unmap_page(u64 mapaddr);
+
+#endif
diff --git a/drivers/infiniband/hw/ehca/hipz_fns.h b/drivers/infiniband/hw/ehca/hipz_fns.h
new file mode 100644
index 0000000..9dac93d
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/hipz_fns.h
@@ -0,0 +1,68 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * HW abstraction register functions
+ *
+ * Authors: Christoph Raisch <raisch@de.ibm.com>
+ * Reinhard Ernst <rernst@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __HIPZ_FNS_H__
+#define __HIPZ_FNS_H__
+
+#include "ehca_classes.h"
+#include "hipz_hw.h"
+
+#include "hipz_fns_core.h"
+
+#define hipz_galpa_store_eq(gal, offset, value) \
+ hipz_galpa_store(gal, EQTEMM_OFFSET(offset), value)
+
+#define hipz_galpa_load_eq(gal, offset) \
+ hipz_galpa_load(gal, EQTEMM_OFFSET(offset))
+
+#define hipz_galpa_store_qped(gal, offset, value) \
+ hipz_galpa_store(gal, QPEDMM_OFFSET(offset), value)
+
+#define hipz_galpa_load_qped(gal, offset) \
+ hipz_galpa_load(gal, QPEDMM_OFFSET(offset))
+
+#define hipz_galpa_store_mrmw(gal, offset, value) \
+ hipz_galpa_store(gal, MRMWMM_OFFSET(offset), value)
+
+#define hipz_galpa_load_mrmw(gal, offset) \
+ hipz_galpa_load(gal, MRMWMM_OFFSET(offset))
+
+#endif
diff --git a/drivers/infiniband/hw/ehca/hipz_fns_core.h b/drivers/infiniband/hw/ehca/hipz_fns_core.h
new file mode 100644
index 0000000..20898a1
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/hipz_fns_core.h
@@ -0,0 +1,100 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * HW abstraction register functions
+ *
+ * Authors: Christoph Raisch <raisch@de.ibm.com>
+ * Heiko J Schick <schickhj@de.ibm.com>
+ * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ * Reinhard Ernst <rernst@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __HIPZ_FNS_CORE_H__
+#define __HIPZ_FNS_CORE_H__
+
+#include "hcp_phyp.h"
+#include "hipz_hw.h"
+
+#define hipz_galpa_store_cq(gal, offset, value) \
+ hipz_galpa_store(gal, CQTEMM_OFFSET(offset), value)
+
+#define hipz_galpa_load_cq(gal, offset) \
+ hipz_galpa_load(gal, CQTEMM_OFFSET(offset))
+
+#define hipz_galpa_store_qp(gal,offset, value) \
+ hipz_galpa_store(gal, QPTEMM_OFFSET(offset), value)
+#define hipz_galpa_load_qp(gal, offset) \
+ hipz_galpa_load(gal,QPTEMM_OFFSET(offset))
+
+static inline void hipz_update_sqa(struct ehca_qp *qp, u16 nr_wqes)
+{
+ /* ringing doorbell :-) */
+ hipz_galpa_store_qp(qp->galpas.kernel, qpx_sqa,
+ EHCA_BMASK_SET(QPX_SQADDER, nr_wqes));
+}
+
+static inline void hipz_update_rqa(struct ehca_qp *qp, u16 nr_wqes)
+{
+ /* ringing doorbell :-) */
+ hipz_galpa_store_qp(qp->galpas.kernel, qpx_rqa,
+ EHCA_BMASK_SET(QPX_RQADDER, nr_wqes));
+}
+
+static inline void hipz_update_feca(struct ehca_cq *cq, u32 nr_cqes)
+{
+ hipz_galpa_store_cq(cq->galpas.kernel, cqx_feca,
+ EHCA_BMASK_SET(CQX_FECADDER, nr_cqes));
+}
+
+static inline void hipz_set_cqx_n0(struct ehca_cq *cq, u32 value)
+{
+ u64 cqx_n0_reg;
+
+ hipz_galpa_store_cq(cq->galpas.kernel, cqx_n0,
+ EHCA_BMASK_SET(CQX_N0_GENERATE_SOLICITED_COMP_EVENT,
+ value));
+ cqx_n0_reg = hipz_galpa_load_cq(cq->galpas.kernel, cqx_n0);
+}
+
+static inline void hipz_set_cqx_n1(struct ehca_cq *cq, u32 value)
+{
+ u64 cqx_n1_reg;
+
+ hipz_galpa_store_cq(cq->galpas.kernel, cqx_n1,
+ EHCA_BMASK_SET(CQX_N1_GENERATE_COMP_EVENT, value));
+ cqx_n1_reg = hipz_galpa_load_cq(cq->galpas.kernel, cqx_n1);
+}
+
+#endif /* __HIPZ_FNC_CORE_H__ */
diff --git a/drivers/infiniband/hw/ehca/hipz_hw.h b/drivers/infiniband/hw/ehca/hipz_hw.h
new file mode 100644
index 0000000..3fc92b0
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/hipz_hw.h
@@ -0,0 +1,388 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * eHCA register definitions
+ *
+ * Authors: Waleri Fomin <fomin@de.ibm.com>
+ * Christoph Raisch <raisch@de.ibm.com>
+ * Reinhard Ernst <rernst@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __HIPZ_HW_H__
+#define __HIPZ_HW_H__
+
+#include "ehca_tools.h"
+
+/* QP Table Entry Memory Map */
+struct hipz_qptemm {
+ u64 qpx_hcr;
+ u64 qpx_c;
+ u64 qpx_herr;
+ u64 qpx_aer;
+/* 0x20*/
+ u64 qpx_sqa;
+ u64 qpx_sqc;
+ u64 qpx_rqa;
+ u64 qpx_rqc;
+/* 0x40*/
+ u64 qpx_st;
+ u64 qpx_pmstate;
+ u64 qpx_pmfa;
+ u64 qpx_pkey;
+/* 0x60*/
+ u64 qpx_pkeya;
+ u64 qpx_pkeyb;
+ u64 qpx_pkeyc;
+ u64 qpx_pkeyd;
+/* 0x80*/
+ u64 qpx_qkey;
+ u64 qpx_dqp;
+ u64 qpx_dlidp;
+ u64 qpx_portp;
+/* 0xa0*/
+ u64 qpx_slidp;
+ u64 qpx_slidpp;
+ u64 qpx_dlida;
+ u64 qpx_porta;
+/* 0xc0*/
+ u64 qpx_slida;
+ u64 qpx_slidpa;
+ u64 qpx_slvl;
+ u64 qpx_ipd;
+/* 0xe0*/
+ u64 qpx_mtu;
+ u64 qpx_lato;
+ u64 qpx_rlimit;
+ u64 qpx_rnrlimit;
+/* 0x100*/
+ u64 qpx_t;
+ u64 qpx_sqhp;
+ u64 qpx_sqptp;
+ u64 qpx_nspsn;
+/* 0x120*/
+ u64 qpx_nspsnhwm;
+ u64 reserved1;
+ u64 qpx_sdsi;
+ u64 qpx_sdsbc;
+/* 0x140*/
+ u64 qpx_sqwsize;
+ u64 qpx_sqwts;
+ u64 qpx_lsn;
+ u64 qpx_nssn;
+/* 0x160 */
+ u64 qpx_mor;
+ u64 qpx_cor;
+ u64 qpx_sqsize;
+ u64 qpx_erc;
+/* 0x180*/
+ u64 qpx_rnrrc;
+ u64 qpx_ernrwt;
+ u64 qpx_rnrresp;
+ u64 qpx_lmsna;
+/* 0x1a0 */
+ u64 qpx_sqhpc;
+ u64 qpx_sqcptp;
+ u64 qpx_sigt;
+ u64 qpx_wqecnt;
+/* 0x1c0*/
+ u64 qpx_rqhp;
+ u64 qpx_rqptp;
+ u64 qpx_rqsize;
+ u64 qpx_nrr;
+/* 0x1e0*/
+ u64 qpx_rdmac;
+ u64 qpx_nrpsn;
+ u64 qpx_lapsn;
+ u64 qpx_lcr;
+/* 0x200*/
+ u64 qpx_rwc;
+ u64 qpx_rwva;
+ u64 qpx_rdsi;
+ u64 qpx_rdsbc;
+/* 0x220*/
+ u64 qpx_rqwsize;
+ u64 qpx_crmsn;
+ u64 qpx_rdd;
+ u64 qpx_larpsn;
+/* 0x240*/
+ u64 qpx_pd;
+ u64 qpx_scqn;
+ u64 qpx_rcqn;
+ u64 qpx_aeqn;
+/* 0x260*/
+ u64 qpx_aaelog;
+ u64 qpx_ram;
+ u64 qpx_rdmaqe0;
+ u64 qpx_rdmaqe1;
+/* 0x280*/
+ u64 qpx_rdmaqe2;
+ u64 qpx_rdmaqe3;
+ u64 qpx_nrpsnhwm;
+/* 0x298*/
+ u64 reserved[(0x400 - 0x298) / 8];
+/* 0x400 extended data */
+ u64 reserved_ext[(0x500 - 0x400) / 8];
+/* 0x500 */
+ u64 reserved2[(0x1000 - 0x500) / 8];
+/* 0x1000 */
+};
+
+#define QPX_SQADDER EHCA_BMASK_IBM(48,63)
+#define QPX_RQADDER EHCA_BMASK_IBM(48,63)
+
+#define QPTEMM_OFFSET(x) offsetof(struct hipz_qptemm,x)
+
+/* MRMWPT Entry Memory Map */
+struct hipz_mrmwmm {
+ /* 0x00 */
+ u64 mrx_hcr;
+
+ u64 mrx_c;
+ u64 mrx_herr;
+ u64 mrx_aer;
+ /* 0x20 */
+ u64 mrx_pp;
+ u64 reserved1;
+ u64 reserved2;
+ u64 reserved3;
+ /* 0x40 */
+ u64 reserved4[(0x200 - 0x40) / 8];
+ /* 0x200 */
+ u64 mrx_ctl[64];
+
+};
+
+#define MRMWMM_OFFSET(x) offsetof(struct hipz_mrmwmm,x)
+
+struct hipz_qpedmm {
+ /* 0x00 */
+ u64 reserved0[(0x400) / 8];
+ /* 0x400 */
+ u64 qpedx_phh;
+ u64 qpedx_ppsgp;
+ /* 0x410 */
+ u64 qpedx_ppsgu;
+ u64 qpedx_ppdgp;
+ /* 0x420 */
+ u64 qpedx_ppdgu;
+ u64 qpedx_aph;
+ /* 0x430 */
+ u64 qpedx_apsgp;
+ u64 qpedx_apsgu;
+ /* 0x440 */
+ u64 qpedx_apdgp;
+ u64 qpedx_apdgu;
+ /* 0x450 */
+ u64 qpedx_apav;
+ u64 qpedx_apsav;
+ /* 0x460 */
+ u64 qpedx_hcr;
+ u64 reserved1[4];
+ /* 0x488 */
+ u64 qpedx_rrl0;
+ /* 0x490 */
+ u64 qpedx_rrrkey0;
+ u64 qpedx_rrva0;
+ /* 0x4a0 */
+ u64 reserved2;
+ u64 qpedx_rrl1;
+ /* 0x4b0 */
+ u64 qpedx_rrrkey1;
+ u64 qpedx_rrva1;
+ /* 0x4c0 */
+ u64 reserved3;
+ u64 qpedx_rrl2;
+ /* 0x4d0 */
+ u64 qpedx_rrrkey2;
+ u64 qpedx_rrva2;
+ /* 0x4e0 */
+ u64 reserved4;
+ u64 qpedx_rrl3;
+ /* 0x4f0 */
+ u64 qpedx_rrrkey3;
+ u64 qpedx_rrva3;
+};
+
+#define QPEDMM_OFFSET(x) offsetof(struct hipz_qpedmm,x)
+
+/* CQ Table Entry Memory Map */
+struct hipz_cqtemm {
+ u64 cqx_hcr;
+ u64 cqx_c;
+ u64 cqx_herr;
+ u64 cqx_aer;
+/* 0x20 */
+ u64 cqx_ptp;
+ u64 cqx_tp;
+ u64 cqx_fec;
+ u64 cqx_feca;
+/* 0x40 */
+ u64 cqx_ep;
+ u64 cqx_eq;
+/* 0x50 */
+ u64 reserved1;
+ u64 cqx_n0;
+/* 0x60 */
+ u64 cqx_n1;
+ u64 reserved2[(0x1000 - 0x60) / 8];
+/* 0x1000 */
+};
+
+#define CQX_FEC_CQE_CNT EHCA_BMASK_IBM(32,63)
+#define CQX_FECADDER EHCA_BMASK_IBM(32,63)
+#define CQX_N0_GENERATE_SOLICITED_COMP_EVENT EHCA_BMASK_IBM(0,0)
+#define CQX_N1_GENERATE_COMP_EVENT EHCA_BMASK_IBM(0,0)
+
+#define CQTEMM_OFFSET(x) offsetof(struct hipz_cqtemm,x)
+
+/* EQ Table Entry Memory Map */
+struct hipz_eqtemm {
+ u64 eqx_hcr;
+ u64 eqx_c;
+
+ u64 eqx_herr;
+ u64 eqx_aer;
+/* 0x20 */
+ u64 eqx_ptp;
+ u64 eqx_tp;
+ u64 eqx_ssba;
+ u64 eqx_psba;
+
+/* 0x40 */
+ u64 eqx_cec;
+ u64 eqx_meql;
+ u64 eqx_xisbi;
+ u64 eqx_xisc;
+/* 0x60 */
+ u64 eqx_it;
+
+};
+
+#define EQTEMM_OFFSET(x) offsetof(struct hipz_eqtemm,x)
+
+/* access control defines for MR/MW */
+#define HIPZ_ACCESSCTRL_L_WRITE 0x00800000
+#define HIPZ_ACCESSCTRL_R_WRITE 0x00400000
+#define HIPZ_ACCESSCTRL_R_READ 0x00200000
+#define HIPZ_ACCESSCTRL_R_ATOMIC 0x00100000
+#define HIPZ_ACCESSCTRL_MW_BIND 0x00080000
+
+/* query hca response block */
+struct hipz_query_hca {
+ u32 cur_reliable_dg;
+ u32 cur_qp;
+ u32 cur_cq;
+ u32 cur_eq;
+ u32 cur_mr;
+ u32 cur_mw;
+ u32 cur_ee_context;
+ u32 cur_mcast_grp;
+ u32 cur_qp_attached_mcast_grp;
+ u32 reserved1;
+ u32 cur_ipv6_qp;
+ u32 cur_eth_qp;
+ u32 cur_hp_mr;
+ u32 reserved2[3];
+ u32 max_rd_domain;
+ u32 max_qp;
+ u32 max_cq;
+ u32 max_eq;
+ u32 max_mr;
+ u32 max_hp_mr;
+ u32 max_mw;
+ u32 max_mrwpte;
+ u32 max_special_mrwpte;
+ u32 max_rd_ee_context;
+ u32 max_mcast_grp;
+ u32 max_total_mcast_qp_attach;
+ u32 max_mcast_qp_attach;
+ u32 max_raw_ipv6_qp;
+ u32 max_raw_ethy_qp;
+ u32 internal_clock_frequency;
+ u32 max_pd;
+ u32 max_ah;
+ u32 max_cqe;
+ u32 max_wqes_wq;
+ u32 max_partitions;
+ u32 max_rr_ee_context;
+ u32 max_rr_qp;
+ u32 max_rr_hca;
+ u32 max_act_wqs_ee_context;
+ u32 max_act_wqs_qp;
+ u32 max_sge;
+ u32 max_sge_rd;
+ u32 memory_page_size_supported;
+ u64 max_mr_size;
+ u32 local_ca_ack_delay;
+ u32 num_ports;
+ u32 vendor_id;
+ u32 vendor_part_id;
+ u32 hw_ver;
+ u64 node_guid;
+ u64 hca_cap_indicators;
+ u32 data_counter_register_size;
+ u32 max_shared_rq;
+ u32 max_isns_eq;
+ u32 max_neq;
+} __attribute__ ((packed));
+
+/* query port response block */
+struct hipz_query_port {
+ u32 state;
+ u32 bad_pkey_cntr;
+ u32 lmc;
+ u32 lid;
+ u32 subnet_timeout;
+ u32 qkey_viol_cntr;
+ u32 sm_sl;
+ u32 sm_lid;
+ u32 capability_mask;
+ u32 init_type_reply;
+ u32 pkey_tbl_len;
+ u32 gid_tbl_len;
+ u64 gid_prefix;
+ u32 port_nr;
+ u16 pkey_entries[16];
+ u8 reserved1[32];
+ u32 trent_size;
+ u32 trbuf_size;
+ u64 max_msg_sz;
+ u32 max_mtu;
+ u32 vl_cap;
+ u8 reserved2[1900];
+ u64 guid_entries[255];
+} __attribute__ ((packed));
+
+#endif
diff --git a/drivers/infiniband/hw/ehca/ipz_pt_fn.c b/drivers/infiniband/hw/ehca/ipz_pt_fn.c
new file mode 100644
index 0000000..e028ff1
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ipz_pt_fn.c
@@ -0,0 +1,149 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * internal queue handling
+ *
+ * Authors: Waleri Fomin <fomin@de.ibm.com>
+ * Reinhard Ernst <rernst@de.ibm.com>
+ * Christoph Raisch <raisch@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "ehca_tools.h"
+#include "ipz_pt_fn.h"
+
+void *ipz_qpageit_get_inc(struct ipz_queue *queue)
+{
+ void *ret = ipz_qeit_get(queue);
+ queue->current_q_offset += queue->pagesize;
+ if (queue->current_q_offset > queue->queue_length) {
+ queue->current_q_offset -= queue->pagesize;
+ ret = NULL;
+ }
+ if (((u64)ret) % EHCA_PAGESIZE) {
+ ehca_gen_err("ERROR!! not at PAGE-Boundary");
+ return NULL;
+ }
+ return ret;
+}
+
+void *ipz_qeit_eq_get_inc(struct ipz_queue *queue)
+{
+ void *ret = ipz_qeit_get(queue);
+ u64 last_entry_in_q = queue->queue_length - queue->qe_size;
+
+ queue->current_q_offset += queue->qe_size;
+ if (queue->current_q_offset > last_entry_in_q) {
+ queue->current_q_offset = 0;
+ queue->toggle_state = (~queue->toggle_state) & 1;
+ }
+
+ return ret;
+}
+
+int ipz_queue_ctor(struct ipz_queue *queue,
+ const u32 nr_of_pages,
+ const u32 pagesize, const u32 qe_size, const u32 nr_of_sg)
+{
+ int pages_per_kpage = PAGE_SIZE >> EHCA_PAGESHIFT;
+ int f;
+
+ if (pagesize > PAGE_SIZE) {
+ ehca_gen_err("FATAL ERROR: pagesize=%x is greater "
+ "than kernel page size", pagesize);
+ return 0;
+ }
+ if (!pages_per_kpage) {
+ ehca_gen_err("FATAL ERROR: invalid kernel page size. "
+ "pages_per_kpage=%x", pages_per_kpage);
+ return 0;
+ }
+ queue->queue_length = nr_of_pages * pagesize;
+ queue->queue_pages = vmalloc(nr_of_pages * sizeof(void *));
+ if (!queue->queue_pages) {
+ ehca_gen_err("ERROR!! didn't get the memory");
+ return 0;
+ }
+ memset(queue->queue_pages, 0, nr_of_pages * sizeof(void *));
+ /*
+ * allocate pages for queue:
+ * outer loop allocates whole kernel pages (page aligned) and
+ * inner loop divides a kernel page into smaller hca queue pages
+ */
+ f = 0;
+ while (f < nr_of_pages) {
+ u8 *kpage = (u8*)get_zeroed_page(GFP_KERNEL);
+ int k;
+ if (!kpage)
+ goto ipz_queue_ctor_exit0; /*NOMEM*/
+ for (k = 0; k < pages_per_kpage && f < nr_of_pages; k++) {
+ (queue->queue_pages)[f] = (struct ipz_page *)kpage;
+ kpage += EHCA_PAGESIZE;
+ f++;
+ }
+ }
+
+ queue->current_q_offset = 0;
+ queue->qe_size = qe_size;
+ queue->act_nr_of_sg = nr_of_sg;
+ queue->pagesize = pagesize;
+ queue->toggle_state = 1;
+ return 1;
+
+ ipz_queue_ctor_exit0:
+ ehca_gen_err("Couldn't get alloc pages queue=%p f=%x nr_of_pages=%x",
+ queue, f, nr_of_pages);
+ for (f = 0; f < nr_of_pages; f += pages_per_kpage) {
+ if (!(queue->queue_pages)[f])
+ break;
+ free_page((unsigned long)(queue->queue_pages)[f]);
+ }
+ return 0;
+}
+
+int ipz_queue_dtor(struct ipz_queue *queue)
+{
+ int pages_per_kpage = PAGE_SIZE >> EHCA_PAGESHIFT;
+ int g;
+ int nr_pages;
+
+ if (!queue || !queue->queue_pages) {
+ ehca_gen_dbg("queue or queue_pages is NULL");
+ return 0;
+ }
+ nr_pages = queue->queue_length / queue->pagesize;
+ for (g = 0; g < nr_pages; g += pages_per_kpage)
+ free_page((unsigned long)(queue->queue_pages)[g]);
+ vfree(queue->queue_pages);
+
+ return 1;
+}
diff --git a/drivers/infiniband/hw/ehca/ipz_pt_fn.h b/drivers/infiniband/hw/ehca/ipz_pt_fn.h
new file mode 100644
index 0000000..2f13509
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ipz_pt_fn.h
@@ -0,0 +1,247 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * internal queue handling
+ *
+ * Authors: Waleri Fomin <fomin@de.ibm.com>
+ * Reinhard Ernst <rernst@de.ibm.com>
+ * Christoph Raisch <raisch@de.ibm.com>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __IPZ_PT_FN_H__
+#define __IPZ_PT_FN_H__
+
+#define EHCA_PAGESHIFT 12
+#define EHCA_PAGESIZE 4096UL
+#define EHCA_PAGEMASK (~(EHCA_PAGESIZE-1))
+#define EHCA_PT_ENTRIES 512UL
+
+#include "ehca_tools.h"
+#include "ehca_qes.h"
+
+/* struct generic ehca page */
+struct ipz_page {
+ u8 entries[EHCA_PAGESIZE];
+};
+
+/* struct generic queue in linux kernel virtual memory (kv) */
+struct ipz_queue {
+ u64 current_q_offset; /* current queue entry */
+
+ struct ipz_page **queue_pages; /* array of pages belonging to queue */
+ u32 qe_size; /* queue entry size */
+ u32 act_nr_of_sg;
+ u32 queue_length; /* queue length allocated in bytes */
+ u32 pagesize;
+ u32 toggle_state; /* toggle flag - per page */
+ u32 dummy3; /* 64 bit alignment */
+};
+
+/*
+ * return current Queue Entry for a certain q_offset
+ * returns address (kv) of Queue Entry
+ */
+static inline void *ipz_qeit_calc(struct ipz_queue *queue, u64 q_offset)
+{
+ struct ipz_page *current_page;
+ if (q_offset >= queue->queue_length)
+ return NULL;
+ current_page = (queue->queue_pages)[q_offset >> EHCA_PAGESHIFT];
+ return ¤t_page->entries[q_offset & (EHCA_PAGESIZE - 1)];
+}
+
+/*
+ * return current Queue Entry
+ * returns address (kv) of Queue Entry
+ */
+static inline void *ipz_qeit_get(struct ipz_queue *queue)
+{
+ return ipz_qeit_calc(queue, queue->current_q_offset);
+}
+
+/*
+ * return current Queue Page , increment Queue Page iterator from
+ * page to page in struct ipz_queue, last increment will return 0! and
+ * NOT wrap
+ * returns address (kv) of Queue Page
+ * warning don't use in parallel with ipz_QE_get_inc()
+ */
+void *ipz_qpageit_get_inc(struct ipz_queue *queue);
+
+/*
+ * return current Queue Entry, increment Queue Entry iterator by one
+ * step in struct ipz_queue, will wrap in ringbuffer
+ * returns address (kv) of Queue Entry BEFORE increment
+ * warning don't use in parallel with ipz_qpageit_get_inc()
+ * warning unpredictable results may occur if steps>act_nr_of_queue_entries
+ */
+static inline void *ipz_qeit_get_inc(struct ipz_queue *queue)
+{
+ void *ret = ipz_qeit_get(queue);
+ queue->current_q_offset += queue->qe_size;
+ if (queue->current_q_offset >= queue->queue_length) {
+ queue->current_q_offset = 0;
+ /* toggle the valid flag */
+ queue->toggle_state = (~queue->toggle_state) & 1;
+ }
+
+ return ret;
+}
+
+/*
+ * return current Queue Entry, increment Queue Entry iterator by one
+ * step in struct ipz_queue, will wrap in ringbuffer
+ * returns address (kv) of Queue Entry BEFORE increment
+ * returns 0 and does not increment, if wrong valid state
+ * warning don't use in parallel with ipz_qpageit_get_inc()
+ * warning unpredictable results may occur if steps>act_nr_of_queue_entries
+ */
+static inline void *ipz_qeit_get_inc_valid(struct ipz_queue *queue)
+{
+ struct ehca_cqe *cqe = ipz_qeit_get(queue);
+ u32 cqe_flags = cqe->cqe_flags;
+
+ if ((cqe_flags >> 7) != (queue->toggle_state & 1))
+ return NULL;
+
+ ipz_qeit_get_inc(queue);
+ return cqe;
+}
+
+/*
+ * returns and resets Queue Entry iterator
+ * returns address (kv) of first Queue Entry
+ */
+static inline void *ipz_qeit_reset(struct ipz_queue *queue)
+{
+ queue->current_q_offset = 0;
+ return ipz_qeit_get(queue);
+}
+
+/* struct generic page table */
+struct ipz_pt {
+ u64 entries[EHCA_PT_ENTRIES];
+};
+
+/* struct page table for a queue, only to be used in pf */
+struct ipz_qpt {
+ /* queue page tables (kv), use u64 because we know the element length */
+ u64 *qpts;
+ u32 n_qpts;
+ u32 n_ptes; /* number of page table entries */
+ u64 *current_pte_addr;
+};
+
+/*
+ * constructor for a ipz_queue_t, placement new for ipz_queue_t,
+ * new for all dependent datastructors
+ * all QP Tables are the same
+ * flow:
+ * allocate+pin queue
+ * see ipz_qpt_ctor()
+ * returns true if ok, false if out of memory
+ */
+int ipz_queue_ctor(struct ipz_queue *queue, const u32 nr_of_pages,
+ const u32 pagesize, const u32 qe_size,
+ const u32 nr_of_sg);
+
+/*
+ * destructor for a ipz_queue_t
+ * -# free queue
+ * see ipz_queue_ctor()
+ * returns true if ok, false if queue was NULL-ptr of free failed
+ */
+int ipz_queue_dtor(struct ipz_queue *queue);
+
+/*
+ * constructor for a ipz_qpt_t,
+ * placement new for struct ipz_queue, new for all dependent datastructors
+ * all QP Tables are the same,
+ * flow:
+ * -# allocate+pin queue
+ * -# initialise ptcb
+ * -# allocate+pin PTs
+ * -# link PTs to a ring, according to HCA Arch, set bit62 id needed
+ * -# the ring must have room for exactly nr_of_PTEs
+ * see ipz_qpt_ctor()
+ */
+void ipz_qpt_ctor(struct ipz_qpt *qpt,
+ const u32 nr_of_qes,
+ const u32 pagesize,
+ const u32 qe_size,
+ const u8 lowbyte, const u8 toggle,
+ u32 * act_nr_of_QEs, u32 * act_nr_of_pages);
+
+/*
+ * return current Queue Entry, increment Queue Entry iterator by one
+ * step in struct ipz_queue, will wrap in ringbuffer
+ * returns address (kv) of Queue Entry BEFORE increment
+ * warning don't use in parallel with ipz_qpageit_get_inc()
+ * warning unpredictable results may occur if steps>act_nr_of_queue_entries
+ * fix EQ page problems
+ */
+void *ipz_qeit_eq_get_inc(struct ipz_queue *queue);
+
+/*
+ * return current Event Queue Entry, increment Queue Entry iterator
+ * by one step in struct ipz_queue if valid, will wrap in ringbuffer
+ * returns address (kv) of Queue Entry BEFORE increment
+ * returns 0 and does not increment, if wrong valid state
+ * warning don't use in parallel with ipz_queue_QPageit_get_inc()
+ * warning unpredictable results may occur if steps>act_nr_of_queue_entries
+ */
+static inline void *ipz_eqit_eq_get_inc_valid(struct ipz_queue *queue)
+{
+ void *ret = ipz_qeit_get(queue);
+ u32 qe = *(u8 *) ret;
+ if ((qe >> 7) != (queue->toggle_state & 1))
+ return NULL;
+ ipz_qeit_eq_get_inc(queue); /* this is a good one */
+ return ret;
+}
+
+/* returns address (GX) of first queue entry */
+static inline u64 ipz_qpt_get_firstpage(struct ipz_qpt *qpt)
+{
+ return be64_to_cpu(qpt->qpts[0]);
+}
+
+/* returns address (kv) of first page of queue page table */
+static inline void *ipz_qpt_get_qpt(struct ipz_qpt *qpt)
+{
+ return qpt->qpts;
+}
+
+#endif /* __IPZ_PT_FN_H__ */