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-rw-r--r--gpxe/src/drivers/infiniband/ib_sma.c553
1 files changed, 0 insertions, 553 deletions
diff --git a/gpxe/src/drivers/infiniband/ib_sma.c b/gpxe/src/drivers/infiniband/ib_sma.c
deleted file mode 100644
index 2bd3a9e8..00000000
--- a/gpxe/src/drivers/infiniband/ib_sma.c
+++ /dev/null
@@ -1,553 +0,0 @@
-/*
- * Copyright (C) 2008 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <byteswap.h>
-#include <gpxe/infiniband.h>
-#include <gpxe/iobuf.h>
-#include <gpxe/process.h>
-#include <gpxe/ib_sma.h>
-
-/**
- * @file
- *
- * Infiniband Subnet Management Agent
- *
- */
-
-/**
- * Get node information
- *
- * @v sma Subnet management agent
- * @v get Attribute to get
- */
-static void ib_sma_get_node_info ( struct ib_sma *sma,
- union ib_smp_data *get ) {
- struct ib_device *ibdev = sma->ibdev;
- struct ib_node_info *node_info = &get->node_info;
- struct ib_device *tmp;
-
- memset ( node_info, 0, sizeof ( *node_info ) );
- node_info->base_version = IB_MGMT_BASE_VERSION;
- node_info->class_version = IB_SMP_CLASS_VERSION;
- node_info->node_type = IB_NODE_TYPE_HCA;
- /* Search for IB devices with the same physical device to
- * identify port count and a suitable Node GUID.
- */
- for_each_ibdev ( tmp ) {
- if ( tmp->dev != ibdev->dev )
- continue;
- if ( node_info->num_ports == 0 ) {
- memcpy ( node_info->sys_guid, &tmp->gid.u.half[1],
- sizeof ( node_info->sys_guid ) );
- memcpy ( node_info->node_guid, &tmp->gid.u.half[1],
- sizeof ( node_info->node_guid ) );
- }
- node_info->num_ports++;
- }
- memcpy ( node_info->port_guid, &ibdev->gid.u.half[1],
- sizeof ( node_info->port_guid ) );
- node_info->partition_cap = htons ( 1 );
- node_info->local_port_num = ibdev->port;
-}
-
-/**
- * Get node description
- *
- * @v sma Subnet management agent
- * @v get Attribute to get
- */
-static void ib_sma_get_node_desc ( struct ib_sma *sma,
- union ib_smp_data *get ) {
- struct ib_device *ibdev = sma->ibdev;
- struct ib_node_desc *node_desc = &get->node_desc;
- struct ib_gid_half *guid = &ibdev->gid.u.half[1];
-
- memset ( node_desc, 0, sizeof ( *node_desc ) );
- snprintf ( node_desc->node_string, sizeof ( node_desc->node_string ),
- "gPXE %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x (%s)",
- guid->bytes[0], guid->bytes[1], guid->bytes[2],
- guid->bytes[3], guid->bytes[4], guid->bytes[5],
- guid->bytes[6], guid->bytes[7], ibdev->dev->name );
-}
-
-/**
- * Get GUID information
- *
- * @v sma Subnet management agent
- * @v get Attribute to get
- */
-static void ib_sma_get_guid_info ( struct ib_sma *sma,
- union ib_smp_data *get ) {
- struct ib_device *ibdev = sma->ibdev;
- struct ib_guid_info *guid_info = &get->guid_info;
-
- memset ( guid_info, 0, sizeof ( *guid_info ) );
- memcpy ( guid_info->guid[0], &ibdev->gid.u.half[1],
- sizeof ( guid_info->guid[0] ) );
-}
-
-/**
- * Get port information
- *
- * @v sma Subnet management agent
- * @v get Attribute to get
- */
-static void ib_sma_get_port_info ( struct ib_sma *sma,
- union ib_smp_data *get ) {
- struct ib_device *ibdev = sma->ibdev;
- struct ib_port_info *port_info = &get->port_info;
-
- memset ( port_info, 0, sizeof ( *port_info ) );
- memcpy ( port_info->gid_prefix, &ibdev->gid.u.half[0],
- sizeof ( port_info->gid_prefix ) );
- port_info->lid = ntohs ( ibdev->lid );
- port_info->mastersm_lid = ntohs ( ibdev->sm_lid );
- port_info->local_port_num = ibdev->port;
- port_info->link_width_enabled = ibdev->link_width;
- port_info->link_width_supported = ibdev->link_width;
- port_info->link_width_active = ibdev->link_width;
- port_info->link_speed_supported__port_state =
- ( ( ibdev->link_speed << 4 ) | ibdev->port_state );
- port_info->port_phys_state__link_down_def_state =
- ( ( IB_PORT_PHYS_STATE_POLLING << 4 ) |
- IB_PORT_PHYS_STATE_POLLING );
- port_info->link_speed_active__link_speed_enabled =
- ( ( ibdev->link_speed << 4 ) | ibdev->link_speed );
- port_info->neighbour_mtu__mastersm_sl =
- ( ( IB_MTU_2048 << 4 ) | ibdev->sm_sl );
- port_info->vl_cap__init_type = ( IB_VL_0 << 4 );
- port_info->init_type_reply__mtu_cap = IB_MTU_2048;
- port_info->operational_vls__enforcement = ( IB_VL_0 << 4 );
- port_info->guid_cap = 1;
-}
-
-/**
- * Set port information
- *
- * @v sma Subnet management agent
- * @v set Attribute to set
- * @ret rc Return status code
- */
-static int ib_sma_set_port_info ( struct ib_sma *sma,
- const union ib_smp_data *set ) {
- struct ib_device *ibdev = sma->ibdev;
- const struct ib_port_info *port_info = &set->port_info;
-
- memcpy ( &ibdev->gid.u.half[0], port_info->gid_prefix,
- sizeof ( ibdev->gid.u.half[0] ) );
- ibdev->lid = ntohs ( port_info->lid );
- ibdev->sm_lid = ntohs ( port_info->mastersm_lid );
- ibdev->sm_sl = ( port_info->neighbour_mtu__mastersm_sl & 0xf );
-
- if ( ! sma->op->set_port_info ) {
- /* Not an error; we just ignore all other settings */
- return 0;
- }
-
- return sma->op->set_port_info ( ibdev, port_info );
-}
-
-/**
- * Get partition key table
- *
- * @v sma Subnet management agent
- * @v get Attribute to get
- */
-static void ib_sma_get_pkey_table ( struct ib_sma *sma,
- union ib_smp_data *get ) {
- struct ib_device *ibdev = sma->ibdev;
- struct ib_pkey_table *pkey_table = &get->pkey_table;
-
- memset ( pkey_table, 0, sizeof ( *pkey_table ) );
- pkey_table->pkey[0] = htons ( ibdev->pkey );
-}
-
-/**
- * Set partition key table
- *
- * @v sma Subnet management agent
- * @v set Attribute to set
- */
-static int ib_sma_set_pkey_table ( struct ib_sma *sma,
- const union ib_smp_data *get ) {
- struct ib_device *ibdev = sma->ibdev;
- const struct ib_pkey_table *pkey_table = &get->pkey_table;
-
- ibdev->pkey = ntohs ( pkey_table->pkey[0] );
- return 0;
-}
-
-/** An attribute handler */
-struct ib_sma_handler {
- /** Attribute (in network byte order) */
- uint16_t attr_id;
- /** Get attribute
- *
- * @v sma Subnet management agent
- * @v get Attribute to get
- * @ret rc Return status code
- */
- void ( * get ) ( struct ib_sma *sma, union ib_smp_data *get );
- /** Set attribute
- *
- * @v sma Subnet management agent
- * @v set Attribute to set
- * @ret rc Return status code
- */
- int ( * set ) ( struct ib_sma *sma, const union ib_smp_data *set );
-};
-
-/** List of attribute handlers */
-static struct ib_sma_handler ib_sma_handlers[] = {
- { htons ( IB_SMP_ATTR_NODE_DESC ),
- ib_sma_get_node_desc, NULL },
- { htons ( IB_SMP_ATTR_NODE_INFO ),
- ib_sma_get_node_info, NULL },
- { htons ( IB_SMP_ATTR_GUID_INFO ),
- ib_sma_get_guid_info, NULL },
- { htons ( IB_SMP_ATTR_PORT_INFO ),
- ib_sma_get_port_info, ib_sma_set_port_info },
- { htons ( IB_SMP_ATTR_PKEY_TABLE ),
- ib_sma_get_pkey_table, ib_sma_set_pkey_table },
-};
-
-/**
- * Identify attribute handler
- *
- * @v attr_id Attribute ID (in network byte order)
- * @ret handler Attribute handler (or NULL)
- */
-static struct ib_sma_handler * ib_sma_handler ( uint16_t attr_id ) {
- struct ib_sma_handler *handler;
- unsigned int i;
-
- for ( i = 0 ; i < ( sizeof ( ib_sma_handlers ) /
- sizeof ( ib_sma_handlers[0] ) ) ; i++ ) {
- handler = &ib_sma_handlers[i];
- if ( handler->attr_id == attr_id )
- return handler;
- }
-
- return NULL;
-}
-
-/**
- * Respond to management datagram
- *
- * @v sma Subnet management agent
- * @v mad Management datagram
- * @ret rc Return status code
- */
-static int ib_sma_mad ( struct ib_sma *sma, union ib_mad *mad ) {
- struct ib_device *ibdev = sma->ibdev;
- struct ib_mad_hdr *hdr = &mad->hdr;
- struct ib_mad_smp *smp = &mad->smp;
- struct ib_sma_handler *handler = NULL;
- unsigned int hop_pointer;
- unsigned int hop_count;
- int rc;
-
- DBGC ( sma, "SMA %p received SMP with bv=%02x mc=%02x cv=%02x "
- "meth=%02x attr=%04x mod=%08x\n", sma, hdr->base_version,
- hdr->mgmt_class, hdr->class_version, hdr->method,
- ntohs ( hdr->attr_id ), ntohl ( hdr->attr_mod ) );
- DBGC2_HDA ( sma, 0, mad, sizeof ( *mad ) );
-
- /* Sanity checks */
- if ( hdr->base_version != IB_MGMT_BASE_VERSION ) {
- DBGC ( sma, "SMA %p unsupported base version %x\n",
- sma, hdr->base_version );
- return -ENOTSUP;
- }
- if ( ( hdr->mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE ) &&
- ( hdr->mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED ) ) {
- DBGC ( sma, "SMA %p unsupported management class %x\n",
- sma, hdr->mgmt_class );
- return -ENOTSUP;
- }
- if ( hdr->class_version != IB_SMP_CLASS_VERSION ) {
- DBGC ( sma, "SMA %p unsupported class version %x\n",
- sma, hdr->class_version );
- return -ENOTSUP;
- }
- if ( ( hdr->method != IB_MGMT_METHOD_GET ) &&
- ( hdr->method != IB_MGMT_METHOD_SET ) ) {
- DBGC ( sma, "SMA %p unsupported method %x\n",
- sma, hdr->method );
- return -ENOTSUP;
- }
-
- /* Identify handler */
- if ( ! ( handler = ib_sma_handler ( hdr->attr_id ) ) ) {
- DBGC ( sma, "SMA %p unsupported attribute %x\n",
- sma, ntohs ( hdr->attr_id ) );
- hdr->status = htons ( IB_MGMT_STATUS_UNSUPPORTED_METHOD_ATTR );
- goto respond_without_data;
- }
-
- /* Set attribute (if applicable) */
- if ( hdr->method != IB_MGMT_METHOD_SET ) {
- hdr->status = htons ( IB_MGMT_STATUS_OK );
- goto respond;
- }
- if ( ! handler->set ) {
- DBGC ( sma, "SMA %p attribute %x is unsettable\n",
- sma, ntohs ( hdr->attr_id ) );
- hdr->status = htons ( IB_MGMT_STATUS_UNSUPPORTED_METHOD_ATTR );
- goto respond;
- }
- if ( ( rc = handler->set ( sma, &smp->smp_data ) ) != 0 ) {
- DBGC ( sma, "SMA %p could not set attribute %x: %s\n",
- sma, ntohs ( hdr->attr_id ), strerror ( rc ) );
- hdr->status = htons ( IB_MGMT_STATUS_UNSUPPORTED_METHOD_ATTR );
- goto respond;
- }
-
- hdr->status = htons ( IB_MGMT_STATUS_OK );
-
- respond:
- /* Get attribute */
- handler->get ( sma, &smp->smp_data );
-
- respond_without_data:
-
- /* Set method to "Get Response" */
- hdr->method = IB_MGMT_METHOD_GET_RESP;
-
- /* Set response fields for directed route SMPs */
- if ( hdr->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE ) {
- hdr->status |= htons ( IB_SMP_STATUS_D_INBOUND );
- hop_pointer = smp->mad_hdr.class_specific.smp.hop_pointer;
- hop_count = smp->mad_hdr.class_specific.smp.hop_count;
- assert ( hop_count == hop_pointer );
- if ( hop_pointer < ( sizeof ( smp->return_path.hops ) /
- sizeof ( smp->return_path.hops[0] ) ) ) {
- smp->return_path.hops[hop_pointer] = ibdev->port;
- } else {
- DBGC ( sma, "SMA %p invalid hop pointer %d\n",
- sma, hop_pointer );
- return -EINVAL;
- }
- }
-
- DBGC ( sma, "SMA %p responding with status=%04x\n",
- sma, ntohs ( hdr->status ) );
- DBGC2_HDA ( sma, 0, mad, sizeof ( *mad ) );
-
- return 0;
-}
-
-/**
- * Refill SMA receive ring
- *
- * @v sma Subnet management agent
- */
-static void ib_sma_refill_recv ( struct ib_sma *sma ) {
- struct ib_device *ibdev = sma->ibdev;
- struct io_buffer *iobuf;
- int rc;
-
- while ( sma->qp->recv.fill < IB_SMA_NUM_RECV_WQES ) {
-
- /* Allocate I/O buffer */
- iobuf = alloc_iob ( IB_SMA_PAYLOAD_LEN );
- if ( ! iobuf ) {
- /* Non-fatal; we will refill on next attempt */
- return;
- }
-
- /* Post I/O buffer */
- if ( ( rc = ib_post_recv ( ibdev, sma->qp, iobuf ) ) != 0 ) {
- DBGC ( sma, "SMA %p could not refill: %s\n",
- sma, strerror ( rc ) );
- free_iob ( iobuf );
- /* Give up */
- return;
- }
- }
-}
-
-/**
- * Complete SMA send
- *
- *
- * @v ibdev Infiniband device
- * @v qp Queue pair
- * @v iobuf I/O buffer
- * @v rc Completion status code
- */
-static void ib_sma_complete_send ( struct ib_device *ibdev __unused,
- struct ib_queue_pair *qp,
- struct io_buffer *iobuf, int rc ) {
- struct ib_sma *sma = ib_qp_get_ownerdata ( qp );
-
- if ( rc != 0 ) {
- DBGC ( sma, "SMA %p send completion error: %s\n",
- sma, strerror ( rc ) );
- }
- free_iob ( iobuf );
-}
-
-/**
- * Complete SMA receive
- *
- *
- * @v ibdev Infiniband device
- * @v qp Queue pair
- * @v av Address vector
- * @v iobuf I/O buffer
- * @v rc Completion status code
- */
-static void ib_sma_complete_recv ( struct ib_device *ibdev,
- struct ib_queue_pair *qp,
- struct ib_address_vector *av,
- struct io_buffer *iobuf, int rc ) {
- struct ib_sma *sma = ib_qp_get_ownerdata ( qp );
- union ib_mad *mad;
-
- /* Ignore errors */
- if ( rc != 0 ) {
- DBGC ( sma, "SMA %p RX error: %s\n", sma, strerror ( rc ) );
- goto err;
- }
-
- /* Sanity check */
- if ( iob_len ( iobuf ) != sizeof ( *mad ) ) {
- DBGC ( sma, "SMA %p RX bad size (%zd bytes)\n",
- sma, iob_len ( iobuf ) );
- goto err;
- }
- mad = iobuf->data;
-
- /* Construct MAD response */
- if ( ( rc = ib_sma_mad ( sma, mad ) ) != 0 ) {
- DBGC ( sma, "SMA %p could not construct MAD response: %s\n",
- sma, strerror ( rc ) );
- goto err;
- }
-
- /* Send MAD response */
- if ( ( rc = ib_post_send ( ibdev, qp, av, iobuf ) ) != 0 ) {
- DBGC ( sma, "SMA %p could not send MAD response: %s\n",
- sma, strerror ( rc ) );
- goto err;
- }
-
- return;
-
- err:
- free_iob ( iobuf );
-}
-
-/** SMA completion operations */
-static struct ib_completion_queue_operations ib_sma_completion_ops = {
- .complete_send = ib_sma_complete_send,
- .complete_recv = ib_sma_complete_recv,
-};
-
-/**
- * Poll SMA
- *
- * @v process Process
- */
-static void ib_sma_step ( struct process *process ) {
- struct ib_sma *sma =
- container_of ( process, struct ib_sma, poll );
- struct ib_device *ibdev = sma->ibdev;
-
- /* Poll the kernel completion queue */
- ib_poll_cq ( ibdev, sma->cq );
-
- /* Refill the receive ring */
- ib_sma_refill_recv ( sma );
-}
-
-/**
- * Create SMA
- *
- * @v sma Subnet management agent
- * @v ibdev Infiniband device
- * @v op Subnet management operations
- * @ret rc Return status code
- */
-int ib_create_sma ( struct ib_sma *sma, struct ib_device *ibdev,
- struct ib_sma_operations *op ) {
- int rc;
-
- /* Initialise fields */
- memset ( sma, 0, sizeof ( *sma ) );
- sma->ibdev = ibdev;
- sma->op = op;
- process_init ( &sma->poll, ib_sma_step, &ibdev->refcnt );
-
- /* Create completion queue */
- sma->cq = ib_create_cq ( ibdev, IB_SMA_NUM_CQES,
- &ib_sma_completion_ops );
- if ( ! sma->cq ) {
- rc = -ENOMEM;
- goto err_create_cq;
- }
-
- /* Create queue pair */
- sma->qp = ib_create_qp ( ibdev, IB_SMA_NUM_SEND_WQES, sma->cq,
- IB_SMA_NUM_RECV_WQES, sma->cq, 0 );
- if ( ! sma->qp ) {
- rc = -ENOMEM;
- goto err_create_qp;
- }
- ib_qp_set_ownerdata ( sma->qp, sma );
-
- /* If we don't get QP0, we can't function */
- if ( sma->qp->qpn != IB_QPN_SMP ) {
- DBGC ( sma, "SMA %p on QPN %lx, needs to be on QPN 0\n",
- sma, sma->qp->qpn );
- rc = -ENOTSUP;
- goto err_not_qp0;
- }
-
- /* Fill receive ring */
- ib_sma_refill_recv ( sma );
- return 0;
-
- err_not_qp0:
- ib_destroy_qp ( ibdev, sma->qp );
- err_create_qp:
- ib_destroy_cq ( ibdev, sma->cq );
- err_create_cq:
- process_del ( &sma->poll );
- return rc;
-}
-
-/**
- * Destroy SMA
- *
- * @v sma Subnet management agent
- */
-void ib_destroy_sma ( struct ib_sma *sma ) {
- struct ib_device *ibdev = sma->ibdev;
-
- ib_destroy_qp ( ibdev, sma->qp );
- ib_destroy_cq ( ibdev, sma->cq );
- process_del ( &sma->poll );
-}