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This commit is contained in:
Michael Brown 2007-09-17 00:24:44 +01:00
parent 96d0c75c00
commit 3c6a6bdc5d
3 changed files with 204 additions and 4 deletions
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25
src/drivers/net/mlx_ipoib/arbel.h
View File

@ -33,6 +33,9 @@
#define ARBEL_HCR_INIT2RTR_QPEE 0x001a
#define ARBEL_HCR_RTR2RTS_QPEE 0x001b
#define ARBEL_HCR_2RST_QPEE 0x0021
#define ARBEL_HCR_READ_MGM 0x0025
#define ARBEL_HCR_WRITE_MGM 0x0026
#define ARBEL_HCR_MGID_HASH 0x0027
/* Service types */
#define ARBEL_ST_UD 0x03
@ -42,6 +45,17 @@
#define ARBEL_INVALID_LKEY 0x00000100UL
/*
* Datatypes that seem to be missing from the autogenerated documentation
*
*/
struct arbelprm_mgm_hash_st {
pseudo_bit_t reserved0[0x00020];
/* -------------- */
pseudo_bit_t hash[0x00010];
pseudo_bit_t reserved1[0x00010];
};
/*
* Wrapper structures for hardware datatypes
*
@ -53,6 +67,8 @@ struct MLX_DECLARE_STRUCT ( arbelprm_completion_with_error );
struct MLX_DECLARE_STRUCT ( arbelprm_cq_arm_db_record );
struct MLX_DECLARE_STRUCT ( arbelprm_cq_ci_db_record );
struct MLX_DECLARE_STRUCT ( arbelprm_hca_command_register );
struct MLX_DECLARE_STRUCT ( arbelprm_mgm_entry );
struct MLX_DECLARE_STRUCT ( arbelprm_mgm_hash );
struct MLX_DECLARE_STRUCT ( arbelprm_qp_db_record );
struct MLX_DECLARE_STRUCT ( arbelprm_qp_ee_state_transitions );
struct MLX_DECLARE_STRUCT ( arbelprm_query_dev_lim );
@ -266,7 +282,8 @@ struct arbel {
#define ARBEL_HCR_OUT_LEN( _command ) ( ( (_command) >> 21 ) & 0x7fc )
/** Build HCR command from component parts */
#define ARBEL_HCR_CMD( _opcode, _in_mbox, _in_len, _out_mbox, _out_len ) \
#define ARBEL_HCR_INOUT_CMD( _opcode, _in_mbox, _in_len, \
_out_mbox, _out_len ) \
( (_opcode) | \
( (_in_mbox) ? ARBEL_HCR_IN_MBOX : 0 ) | \
( ( (_in_len) / 4 ) << 14 ) | \
@ -274,13 +291,13 @@ struct arbel {
( ( (_out_len) / 4 ) << 23 ) )
#define ARBEL_HCR_IN_CMD( _opcode, _in_mbox, _in_len ) \
ARBEL_HCR_CMD ( _opcode, _in_mbox, _in_len, 0, 0 )
ARBEL_HCR_INOUT_CMD ( _opcode, _in_mbox, _in_len, 0, 0 )
#define ARBEL_HCR_OUT_CMD( _opcode, _out_mbox, _out_len ) \
ARBEL_HCR_CMD ( _opcode, 0, 0, _out_mbox, _out_len )
ARBEL_HCR_INOUT_CMD ( _opcode, 0, 0, _out_mbox, _out_len )
#define ARBEL_HCR_VOID_CMD( _opcode ) \
ARBEL_HCR_CMD ( _opcode, 0, 0, 0, 0 )
ARBEL_HCR_INOUT_CMD ( _opcode, 0, 0, 0, 0 )
/*
* Doorbell record allocation

136
src/drivers/net/mlx_ipoib/mt25218.c
View File

@ -549,6 +549,34 @@ arbel_cmd_2rst_qpee ( struct arbel *arbel, unsigned long qpn ) {
0x03, NULL, qpn, NULL );
}
static inline int
arbel_cmd_read_mgm ( struct arbel *arbel, unsigned int index,
struct arbelprm_mgm_entry *mgm ) {
return arbel_cmd ( arbel,
ARBEL_HCR_OUT_CMD ( ARBEL_HCR_READ_MGM,
1, sizeof ( *mgm ) ),
0, NULL, index, mgm );
}
static inline int
arbel_cmd_write_mgm ( struct arbel *arbel, unsigned int index,
const struct arbelprm_mgm_entry *mgm ) {
return arbel_cmd ( arbel,
ARBEL_HCR_IN_CMD ( ARBEL_HCR_WRITE_MGM,
1, sizeof ( *mgm ) ),
0, mgm, index, NULL );
}
static inline int
arbel_cmd_mgid_hash ( struct arbel *arbel, const struct ib_gid *gid,
struct arbelprm_mgm_hash *hash ) {
return arbel_cmd ( arbel,
ARBEL_HCR_INOUT_CMD ( ARBEL_HCR_MGID_HASH,
1, sizeof ( *gid ),
0, sizeof ( *hash ) ),
0, gid, 0, hash );
}
/***************************************************************************
*
* Completion queue operations
@ -1253,6 +1281,104 @@ static void arbel_poll_cq ( struct ib_device *ibdev,
}
}
/***************************************************************************
*
* Multicast group operations
*
***************************************************************************
*/
/**
* Attach to multicast group
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @v gid Multicast GID
* @ret rc Return status code
*/
static int arbel_mcast_attach ( struct ib_device *ibdev,
struct ib_queue_pair *qp,
struct ib_gid *gid ) {
struct arbel *arbel = ibdev->dev_priv;
struct arbelprm_mgm_hash hash;
struct arbelprm_mgm_entry mgm;
unsigned int index;
int rc;
/* Generate hash table index */
if ( ( rc = arbel_cmd_mgid_hash ( arbel, gid, &hash ) ) != 0 ) {
DBGC ( arbel, "Arbel %p could not hash GID: %s\n",
arbel, strerror ( rc ) );
return rc;
}
index = MLX_GET ( &hash, hash );
/* Check for existing hash table entry */
if ( ( rc = arbel_cmd_read_mgm ( arbel, index, &mgm ) ) != 0 ) {
DBGC ( arbel, "Arbel %p could not read MGM %#x: %s\n",
arbel, index, strerror ( rc ) );
return rc;
}
if ( MLX_GET ( &mgm, mgmqp_0.qi ) != 0 ) {
/* FIXME: this implementation allows only a single QP
* per multicast group, and doesn't handle hash
* collisions. Sufficient for IPoIB but may need to
* be extended in future.
*/
DBGC ( arbel, "Arbel %p MGID index %#x already in use\n",
arbel, index );
return -EBUSY;
}
/* Update hash table entry */
MLX_FILL_2 ( &mgm, 8,
mgmqp_0.qpn_i, qp->qpn,
mgmqp_0.qi, 1 );
memcpy ( &mgm.u.dwords[4], gid, sizeof ( *gid ) );
if ( ( rc = arbel_cmd_write_mgm ( arbel, index, &mgm ) ) != 0 ) {
DBGC ( arbel, "Arbel %p could not write MGM %#x: %s\n",
arbel, index, strerror ( rc ) );
return rc;
}
return 0;
}
/**
* Detach from multicast group
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @v gid Multicast GID
*/
static void arbel_mcast_detach ( struct ib_device *ibdev,
struct ib_queue_pair *qp __unused,
struct ib_gid *gid ) {
struct arbel *arbel = ibdev->dev_priv;
struct arbelprm_mgm_hash hash;
struct arbelprm_mgm_entry mgm;
unsigned int index;
int rc;
/* Generate hash table index */
if ( ( rc = arbel_cmd_mgid_hash ( arbel, gid, &hash ) ) != 0 ) {
DBGC ( arbel, "Arbel %p could not hash GID: %s\n",
arbel, strerror ( rc ) );
return;
}
index = MLX_GET ( &hash, hash );
/* Clear hash table entry */
memset ( &mgm, 0, sizeof ( mgm ) );
if ( ( rc = arbel_cmd_write_mgm ( arbel, index, &mgm ) ) != 0 ) {
DBGC ( arbel, "Arbel %p could not write MGM %#x: %s\n",
arbel, index, strerror ( rc ) );
return;
}
}
/** Arbel Infiniband operations */
static struct ib_device_operations arbel_ib_operations = {
.create_cq = arbel_create_cq,
@ -1262,6 +1388,8 @@ static struct ib_device_operations arbel_ib_operations = {
.post_send = arbel_post_send,
.post_recv = arbel_post_recv,
.poll_cq = arbel_poll_cq,
.mcast_attach = arbel_mcast_attach,
.mcast_detach = arbel_mcast_detach,
};
/**
@ -1379,6 +1507,14 @@ static int arbel_probe ( struct pci_device *pci,
return -EIO;
}
mlx->own_qp->owner_priv = netdev;
struct ib_gid *bcast_gid = ( struct ib_gid * ) &ib_data.bcast_gid;
if ( ( rc = ib_mcast_attach ( ibdev, mlx->own_qp,
bcast_gid ) ) != 0 ) {
DBG ( "Could not attach to broadcast GID: %s\n",
strerror ( rc ) );
return rc;
}
mac = ( ( struct ib_mac * ) netdev->ll_addr );
mac->qpn = htonl ( mlx->own_qp->qpn );

47
src/include/gpxe/infiniband.h
View File

@ -252,6 +252,27 @@ struct ib_device_operations {
struct ib_completion_queue *cq,
ib_completer_t complete_send,
ib_completer_t complete_recv );
/**
* Attach to multicast group
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @v gid Multicast GID
* @ret rc Return status code
*/
int ( * mcast_attach ) ( struct ib_device *ibdev,
struct ib_queue_pair *qp,
struct ib_gid *gid );
/**
* Detach from multicast group
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @v gid Multicast GID
*/
void ( * mcast_detach ) ( struct ib_device *ibdev,
struct ib_queue_pair *qp,
struct ib_gid *gid );
};
/** An Infiniband device */
@ -275,6 +296,32 @@ extern void ib_destroy_qp ( struct ib_device *ibdev,
extern struct ib_work_queue * ib_find_wq ( struct ib_completion_queue *cq,
unsigned long qpn, int is_send );
/**
* Attach to multicast group
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @v gid Multicast GID
* @ret rc Return status code
*/
static inline __attribute__ (( always_inline )) int
ib_mcast_attach ( struct ib_device *ibdev, struct ib_queue_pair *qp,
struct ib_gid *gid ) {
return ibdev->op->mcast_attach ( ibdev, qp, gid );
}
/**
* Detach from multicast group
*
* @v ibdev Infiniband device
* @v qp Queue pair
* @v gid Multicast GID
*/
static inline __attribute__ (( always_inline )) void
ib_mcast_detach ( struct ib_device *ibdev, struct ib_queue_pair *qp,
struct ib_gid *gid ) {
ibdev->op->mcast_detach ( ibdev, qp, gid );
}
extern struct ll_protocol infiniband_protocol;