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Commit fab97220 authored by Heiko J Schick's avatar Heiko J Schick Committed by Roland Dreier

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: default avatarRoland Dreier <rolandd@cisco.com>
parent ded7f1a1
......@@ -991,6 +991,14 @@ EFS FILESYSTEM
W: http://aeschi.ch.eu.org/efs/
S: Orphan
EHCA (IBM GX bus InfiniBand adapter) DRIVER:
P: Hoang-Nam Nguyen
M: hnguyen@de.ibm.com
P: Christoph Raisch
M: raisch@de.ibm.com
L: openib-general@openib.org
S: Supported
EMU10K1 SOUND DRIVER
P: James Courtier-Dutton
M: James@superbug.demon.co.uk
......
......@@ -36,6 +36,7 @@ config INFINIBAND_ADDR_TRANS
source "drivers/infiniband/hw/mthca/Kconfig"
source "drivers/infiniband/hw/ipath/Kconfig"
source "drivers/infiniband/hw/ehca/Kconfig"
source "drivers/infiniband/ulp/ipoib/Kconfig"
......
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-$(CONFIG_INFINIBAND_ISER) += ulp/iser/
config INFINIBAND_EHCA
tristate "eHCA support"
depends on IBMEBUS && INFINIBAND
---help---
This driver supports the IBM pSeries eHCA InfiniBand adapter.
To compile the driver as a module, choose M here. The module
will be called ib_ehca.
config INFINIBAND_EHCA_SCALING
bool "Scaling support (EXPERIMENTAL)"
depends on IBMEBUS && INFINIBAND_EHCA && HOTPLUG_CPU && EXPERIMENTAL
---help---
eHCA scaling support schedules the CQ callbacks to different CPUs.
To enable this feature choose Y here.
# Authors: Heiko J Schick <schickhj@de.ibm.com>
# Christoph Raisch <raisch@de.ibm.com>
# Joachim Fenkes <fenkes@de.ibm.com>
#
# Copyright (c) 2005 IBM Corporation
#
# All rights reserved.
#
# This source code is distributed under a dual license of GPL v2.0 and OpenIB BSD.
obj-$(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
/*
* 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);
}
/*
* 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 */