field; \
})
+
+
+/* Remaining code Copyright Fen Systems Ltd. 2007 */
+
+/** Bit offset of a field within a pseudo_bit_t structure */
+#define MLX_BIT_OFFSET( _structure, _field ) \
+ offsetof ( struct _structure, _field )
+
+/** Bit width of a field within a pseudo_bit_t structure */
+#define MLX_BIT_WIDTH( _structure, _field ) \
+ sizeof ( ( ( struct _structure * ) NULL )->_field )
+
+/*
+ * Assemble native-endian dword from named fields and values
+ *
+ */
+
+#define MLX_ASSEMBLE_1( _structure, _index, _field, _value ) \
+ ( (_value) << \
+ ( MLX_BIT_OFFSET ( _structure, _field ) - ( 32 * (_index) ) ) )
+
+#define MLX_ASSEMBLE_2( _structure, _index, _field, _value, ... ) \
+ ( MLX_ASSEMBLE_1 ( _structure, _index, _field, _value ) | \
+ MLX_ASSEMBLE_1 ( _structure, _index, __VA_ARGS__ ) )
+
+#define MLX_ASSEMBLE_3( _structure, _index, _field, _value, ... ) \
+ ( MLX_ASSEMBLE_1 ( _structure, _index, _field, _value ) | \
+ MLX_ASSEMBLE_2 ( _structure, _index, __VA_ARGS__ ) )
+
+#define MLX_ASSEMBLE_4( _structure, _index, _field, _value, ... ) \
+ ( MLX_ASSEMBLE_1 ( _structure, _index, _field, _value ) | \
+ MLX_ASSEMBLE_3 ( _structure, _index, __VA_ARGS__ ) )
+
+/*
+ * Build native-endian (positive) dword bitmasks from named fields
+ *
+ */
+
+#define MLX_MASK_1( _structure, _index, _field ) \
+ MLX_ASSEMBLE_1 ( _structure, _index, _field, \
+ ( ( 1 << MLX_BIT_WIDTH ( _structure, \
+ _field ) ) - 1 ) )
+
+#define MLX_MASK_2( _structure, _index, _field, ... ) \
+ ( MLX_MASK_1 ( _structure, _index, _field ) | \
+ MLX_MASK_1 ( _structure, _index, __VA_ARGS__ ) )
+
+#define MLX_MASK_3( _structure, _index, _field, ... ) \
+ ( MLX_MASK_1 ( _structure, _index, _field ) | \
+ MLX_MASK_2 ( _structure, _index, __VA_ARGS__ ) )
+
+#define MLX_MASK_4( _structure, _index, _field, ... ) \
+ ( MLX_MASK_1 ( _structure, _index, _field ) | \
+ MLX_MASK_3 ( _structure, _index, __VA_ARGS__ ) )
+
+/*
+ * Populate big-endian dwords from named fields and values
+ *
+ */
+
+#define MLX_POPULATE( _base, _index, _assembled ) \
+ do { \
+ uint32_t *__ptr = ( ( (uint32_t *) (_base) ) + (_index) ); \
+ uint32_t __assembled = (_assembled); \
+ *__ptr = cpu_to_be32 ( __assembled ); \
+ } while ( 0 )
+
+#define MLX_POPULATE_1( _base, _structure, _index, ... ) \
+ MLX_POPULATE ( _base, _index, \
+ MLX_ASSEMBLE_1 ( _structure, _index, __VA_ARGS__ ) )
+
+#define MLX_POPULATE_2( _base, _structure, _index, ... ) \
+ MLX_POPULATE ( _base, _index, \
+ MLX_ASSEMBLE_2 ( _structure, _index, __VA_ARGS__ ) )
+
+#define MLX_POPULATE_3( _base, _structure, _index, ... ) \
+ MLX_POPULATE ( _base, _index, \
+ MLX_ASSEMBLE_3 ( _structure, _index, __VA_ARGS__ ) )
+
+#define MLX_POPULATE_4( _base, _structure, _index, ... ) \
+ MLX_POPULATE ( _base, _index, \
+ MLX_ASSEMBLE_4 ( _structure, _index, __VA_ARGS__ ) )
+
+/*
+ * Modify big-endian dword using named field and value
+ *
+ */
+
+#define MLX_MODIFY( _base, _structure, _index, _field, _value ) \
+ do { \
+ uint32_t *__ptr = ( ( (uint32_t *) (_base) ) + (_index) ); \
+ uint32_t __value = be32_to_cpu ( *__ptr ); \
+ __value &= ~( MLX_MASK_1 ( _structure, _index, _field ) ); \
+ __value |= MLX_ASSEMBLE_1 ( _structure, _index, \
+ _field, _value ); \
+ *__ptr = cpu_to_be32 ( __value ); \
+ } while ( 0 )
+
#endif /* __bit_ops_h__ */
};
+struct mlx_send_work_queue {
+ /** Doorbell number */
+ unsigned int doorbell_idx;
+ /** Work queue entries */
+ struct ud_send_wqe_st *wqe;
+};
-int ib_alloc_wqe ( struct ib_work_queue *wq, struct io_buffer *iobuf ) {
- unsigned int wqe_idx;
- unsigned int new_write_ptr;
-
- /* Allocate queue entry */
- wqe_idx = new_write_ptr = wq->write_ptr;
- if ( wq->iobuf[wqe_idx] )
- return -ENOBUFS;
- wq->iobuf[wqe_idx] = iobuf;
+struct mlx {
+ /** User Access Region */
+ unsigned long uar;
+ /** Doorbell records */
+ union db_record_st *db_rec;
+};
- /* Update write pointer */
- new_write_ptr++;
- new_write_ptr &= ( wq->num_wqes - 1 );
- wq->write_ptr = new_write_ptr;
+static struct ib_gid mlx_no_gid = {
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2 }
+};
- return wqe_idx;
-}
+static void mlx_ring_doorbell ( struct mlx *mlx, void *db_reg,
+ unsigned int offset ) {
+ uint32_t *db_reg_dword = db_reg;
-static inline void ib_free_wqe ( struct ib_work_queue *wq, int wqe_idx ) {
- assert ( wq->iobuf[wqe_idx] != NULL );
- wq->iobuf[wqe_idx] = NULL;
+ barrier();
+ writel ( db_reg_dword[0], ( mlx->uar + offset + 0 ) );
+ barrier();
+ writel ( db_reg_dword[1], ( mlx->uar + offset + 4 ) );
}
static int mlx_post_send ( struct ib_device *ibdev, struct io_buffer *iobuf,
struct ib_queue_pair *qp ) {
struct mlx *mlx = ibdev->priv;
struct ib_work_queue *wq = &qp->send;
- struct mlx_work_queue *mlx_wq = wq->priv;
+ struct mlx_send_work_queue *mlx_wq = wq->priv;
unsigned int wqe_idx_mask = ( wq->num_wqes - 1 );
unsigned int prev_wqe_idx;
struct ud_send_wqe_st *prev_wqe;
struct ud_send_wqe_st *wqe;
struct ib_gid *gid;
size_t nds;
- struct send_doorbell_st doorbell;
+ union db_record_st *db_rec;
+ struct send_doorbell_st db_reg;
/* Allocate work queue entry */
prev_wqe_idx = wq->posted;
- wqe_idx = ( prev_wqe_index + 1 );
+ wqe_idx = ( prev_wqe_idx + 1 );
if ( wq->iobuf[wqe_idx & wqe_idx_mask] ) {
DBGC ( mlx, "MLX %p send queue full", mlx );
return -ENOBUFS;
memset ( &wqe->udseg, 0, sizeof ( wqe->udseg ) );
MLX_POPULATE_2 ( &wqe->udseg, arbelprm_ud_address_vector_st, 0,
pd, GLOBAL_PD,
- port_number, mlx->port );
+ port_number, PXE_IB_PORT );
MLX_POPULATE_2 ( &wqe->udseg, arbelprm_ud_address_vector_st, 1,
- rlid, av->remote_lid,
+ rlid, av->dlid,
g, av->gid_present );
MLX_POPULATE_2 ( &wqe->udseg, arbelprm_ud_address_vector_st, 2,
max_stat_rate, ( ( av->rate >= 3 ) ? 0 : 1 ),
msg, 3 );
MLX_POPULATE_1 ( &wqe->udseg, arbelprm_ud_address_vector_st, 3,
sl, av->sl );
- gid = ( av->gid_present ? av->gid : &ib_no_gid );
+ gid = ( av->gid_present ? &av->gid : &mlx_no_gid );
memcpy ( ( ( ( void * ) &wqe->udseg ) + 16 ),
gid, sizeof ( *gid ) );
MLX_POPULATE_1 ( &wqe->udseg, arbelprm_wqe_segment_ud_st, 8,
/* Update previous work queue entry's "next" field */
nds = ( offsetof ( typeof ( *wqe ), mpointer ) +
sizeof ( wqe->mpointer[0] ) );
- MLX_MODIFY_1 ( &prev_wqe->next.next, arbelprm_wqe_segment_next_st, 0,
- nopcode, XDEV_NOPCODE_SEND );
+ MLX_MODIFY ( &prev_wqe->next.next, arbelprm_wqe_segment_next_st, 0,
+ nopcode, XDEV_NOPCODE_SEND );
MLX_POPULATE_3 ( &prev_wqe->next.next, arbelprm_wqe_segment_next_st, 1,
nds, nds,
f, 1,
always1, 1 );
- /* Ring doorbell */
-
- doorbell index is a property of the queue pair
-
-
- MLX_POPULATE_1 ( mlx_wq->send_uar_context, arbelprm_qp_db_record_st, 0,
+ /* Update doorbell record */
+ db_rec = &mlx->db_rec[mlx_wq->doorbell_idx];
+ MLX_POPULATE_1 ( db_rec, arbelprm_qp_db_record_st, 0,
counter, ( wqe_idx & 0xffff ) );
- memset ( &doorbell, 0, sizeof ( doorbell ) );
- MLX_POPULATE_4 ( &doorbell, arbelprm_send_doorbell_st, 0,
+ barrier();
+
+ /* Ring doorbell register */
+ MLX_POPULATE_4 ( &db_reg, arbelprm_send_doorbell_st, 0,
nopcode, XDEV_NOPCODE_SEND,
f, 1,
wqe_counter, ( prev_wqe_idx & 0xffff ),
wqe_cnt, 1 );
- MLX_POPULATE_2 ( &doorbell, arbelprm_send_doorbell_st, 1,
+ MLX_POPULATE_2 ( &db_reg, arbelprm_send_doorbell_st, 1,
nds, nds,
qpn, qp->qpn );
- barrier();
+ mlx_ring_doorbell ( mlx, &db_reg, POST_SND_OFFSET );
+ /* Update work queue's posted index */
wq->posted = wqe_idx;
-
- struct mlx_nic *mlx = netdev->priv;
- ud_av_t av = iobuf->data;
- ud_send_wqe_t snd_wqe;
- int rc;
-
- snd_wqe = alloc_send_wqe ( mlx->ipoib_qph );
- if ( ! snd_wqe ) {
- DBGC ( mlx, "MLX %p out of TX WQEs\n", mlx );
- return -ENOBUFS;
- }
-
- prep_send_wqe_buf ( mlx->ipoib_qph, mlx->bcast_av, snd_wqe,
- iobuf->data, 0, iob_len ( iobuf ), 0 );
- if ( ( rc = post_send_req ( mlx->ipoib_qph, snd_wqe, 1 ) ) != 0 ) {
- DBGC ( mlx, "MLX %p could not post TX WQE %p: %s\n",
- mlx, snd_wqe, strerror ( rc ) );
- free_wqe ( snd_wqe );
- return rc;
- }
-
-
+ return 0;
}
static struct ib_device_operations mlx_ib_operations = {
__u8 raw[MT_STRUCT_SIZE(arbelprm_cq_cmd_doorbell_st)];
} __attribute__ ((packed));
+struct qp_db_record_st {
+ __u8 raw[MT_STRUCT_SIZE(arbelprm_qp_db_record_st)];
+} __attribute__ ((packed));
+
+struct cq_arm_db_record_st {
+ __u8 raw[MT_STRUCT_SIZE(arbelprm_cq_arm_db_record_st)];
+} __attribute__ ((packed));
+
+struct cq_ci_db_record_st {
+ __u8 raw[MT_STRUCT_SIZE(arbelprm_cq_ci_db_record_st)];
+} __attribute__ ((packed));
+
+union db_record_st {
+ struct qp_db_record_st qp;
+ struct cq_arm_db_record_st cq_arm;
+ struct cq_ci_db_record_st cq_ci;
+} __attribute__ ((packed));
+
struct mad_ifc_inprm_st {
union mad_u mad;
} __attribute__ ((packed));
uint16_t reserved;
} __attribute__ (( packed ));
+
+
+
/** An Infiniband Work Queue */
struct ib_work_queue {
/** Number of work queue entries */
* This is the index of the most recently posted entry.
*/
unsigned int posted;
- /** Driver-private data
- *
- * Typically used to hold the address of the work queue.
- */
+ /** Driver private data */
void *priv;
/** I/O buffers assigned to work queue */
struct io_buffer *iobuf[0];
struct ib_work_queue send;
/** Receive queue */
struct ib_work_queue recv;
+ /** Driver private data */
+ void *priv;
};
/** An Infiniband Address Vector */
struct ib_address_vector {
-
+ /** Destination Queue Pair */
+ unsigned int dest_qp;
+ /** Queue key */
+ unsigned int qkey;
+ /** Destination Local ID */
+ unsigned int dlid;
+ /** Rate */
+ unsigned int rate;
+ /** Service level */
+ unsigned int sl;
+ /** GID is present */
+ unsigned int gid_present;
+ /** GID */
+ struct ib_gid gid;
};
+struct ib_device;
+
/**
* Infiniband device operations
*
struct ib_queue_pair *qp );
};
-
+/** An Infiniband device */
+struct ib_device {
+ /** Driver private data */
+ void *priv;
+};
projects / thirdparty / ipxe.git / commitdiff
