| /* |
| * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>. |
| * |
| * Based in part upon the original driver by Mellanox Technologies |
| * Ltd. Portions may be Copyright (c) Mellanox Technologies Ltd. |
| * |
| * 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. |
| */ |
| |
| FILE_LICENCE ( GPL2_OR_LATER ); |
| |
| #include <stdint.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <strings.h> |
| #include <unistd.h> |
| #include <errno.h> |
| #include <byteswap.h> |
| #include <gpxe/io.h> |
| #include <gpxe/pci.h> |
| #include <gpxe/malloc.h> |
| #include <gpxe/umalloc.h> |
| #include <gpxe/iobuf.h> |
| #include <gpxe/netdevice.h> |
| #include <gpxe/infiniband.h> |
| #include <gpxe/ib_smc.h> |
| #include "arbel.h" |
| |
| /** |
| * @file |
| * |
| * Mellanox Arbel Infiniband HCA |
| * |
| */ |
| |
| /*************************************************************************** |
| * |
| * Queue number allocation |
| * |
| *************************************************************************** |
| */ |
| |
| /** |
| * Allocate queue number |
| * |
| * @v q_inuse Queue usage bitmask |
| * @v max_inuse Maximum number of in-use queues |
| * @ret qn_offset Free queue number offset, or negative error |
| */ |
| static int arbel_alloc_qn_offset ( arbel_bitmask_t *q_inuse, |
| unsigned int max_inuse ) { |
| unsigned int qn_offset = 0; |
| arbel_bitmask_t mask = 1; |
| |
| while ( qn_offset < max_inuse ) { |
| if ( ( mask & *q_inuse ) == 0 ) { |
| *q_inuse |= mask; |
| return qn_offset; |
| } |
| qn_offset++; |
| mask <<= 1; |
| if ( ! mask ) { |
| mask = 1; |
| q_inuse++; |
| } |
| } |
| return -ENFILE; |
| } |
| |
| /** |
| * Free queue number |
| * |
| * @v q_inuse Queue usage bitmask |
| * @v qn_offset Queue number offset |
| */ |
| static void arbel_free_qn_offset ( arbel_bitmask_t *q_inuse, int qn_offset ) { |
| arbel_bitmask_t mask; |
| |
| mask = ( 1 << ( qn_offset % ( 8 * sizeof ( mask ) ) ) ); |
| q_inuse += ( qn_offset / ( 8 * sizeof ( mask ) ) ); |
| *q_inuse &= ~mask; |
| } |
| |
| /*************************************************************************** |
| * |
| * HCA commands |
| * |
| *************************************************************************** |
| */ |
| |
| /** |
| * Wait for Arbel command completion |
| * |
| * @v arbel Arbel device |
| * @ret rc Return status code |
| */ |
| static int arbel_cmd_wait ( struct arbel *arbel, |
| struct arbelprm_hca_command_register *hcr ) { |
| unsigned int wait; |
| |
| for ( wait = ARBEL_HCR_MAX_WAIT_MS ; wait ; wait-- ) { |
| hcr->u.dwords[6] = |
| readl ( arbel->config + ARBEL_HCR_REG ( 6 ) ); |
| if ( MLX_GET ( hcr, go ) == 0 ) |
| return 0; |
| mdelay ( 1 ); |
| } |
| return -EBUSY; |
| } |
| |
| /** |
| * Issue HCA command |
| * |
| * @v arbel Arbel device |
| * @v command Command opcode, flags and input/output lengths |
| * @v op_mod Opcode modifier (0 if no modifier applicable) |
| * @v in Input parameters |
| * @v in_mod Input modifier (0 if no modifier applicable) |
| * @v out Output parameters |
| * @ret rc Return status code |
| */ |
| static int arbel_cmd ( struct arbel *arbel, unsigned long command, |
| unsigned int op_mod, const void *in, |
| unsigned int in_mod, void *out ) { |
| struct arbelprm_hca_command_register hcr; |
| unsigned int opcode = ARBEL_HCR_OPCODE ( command ); |
| size_t in_len = ARBEL_HCR_IN_LEN ( command ); |
| size_t out_len = ARBEL_HCR_OUT_LEN ( command ); |
| void *in_buffer; |
| void *out_buffer; |
| unsigned int status; |
| unsigned int i; |
| int rc; |
| |
| assert ( in_len <= ARBEL_MBOX_SIZE ); |
| assert ( out_len <= ARBEL_MBOX_SIZE ); |
| |
| DBGC2 ( arbel, "Arbel %p command %02x in %zx%s out %zx%s\n", |
| arbel, opcode, in_len, |
| ( ( command & ARBEL_HCR_IN_MBOX ) ? "(mbox)" : "" ), out_len, |
| ( ( command & ARBEL_HCR_OUT_MBOX ) ? "(mbox)" : "" ) ); |
| |
| /* Check that HCR is free */ |
| if ( ( rc = arbel_cmd_wait ( arbel, &hcr ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p command interface locked\n", arbel ); |
| return rc; |
| } |
| |
| /* Prepare HCR */ |
| memset ( &hcr, 0, sizeof ( hcr ) ); |
| in_buffer = &hcr.u.dwords[0]; |
| if ( in_len && ( command & ARBEL_HCR_IN_MBOX ) ) { |
| in_buffer = arbel->mailbox_in; |
| MLX_FILL_1 ( &hcr, 1, in_param_l, virt_to_bus ( in_buffer ) ); |
| } |
| memcpy ( in_buffer, in, in_len ); |
| MLX_FILL_1 ( &hcr, 2, input_modifier, in_mod ); |
| out_buffer = &hcr.u.dwords[3]; |
| if ( out_len && ( command & ARBEL_HCR_OUT_MBOX ) ) { |
| out_buffer = arbel->mailbox_out; |
| MLX_FILL_1 ( &hcr, 4, out_param_l, |
| virt_to_bus ( out_buffer ) ); |
| } |
| MLX_FILL_3 ( &hcr, 6, |
| opcode, opcode, |
| opcode_modifier, op_mod, |
| go, 1 ); |
| DBGC2_HD ( arbel, &hcr, sizeof ( hcr ) ); |
| if ( in_len ) { |
| DBGC2 ( arbel, "Input:\n" ); |
| DBGC2_HD ( arbel, in, ( ( in_len < 512 ) ? in_len : 512 ) ); |
| } |
| |
| /* Issue command */ |
| for ( i = 0 ; i < ( sizeof ( hcr ) / sizeof ( hcr.u.dwords[0] ) ) ; |
| i++ ) { |
| writel ( hcr.u.dwords[i], |
| arbel->config + ARBEL_HCR_REG ( i ) ); |
| barrier(); |
| } |
| |
| /* Wait for command completion */ |
| if ( ( rc = arbel_cmd_wait ( arbel, &hcr ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p timed out waiting for command:\n", |
| arbel ); |
| DBGC_HD ( arbel, &hcr, sizeof ( hcr ) ); |
| return rc; |
| } |
| |
| /* Check command status */ |
| status = MLX_GET ( &hcr, status ); |
| if ( status != 0 ) { |
| DBGC ( arbel, "Arbel %p command failed with status %02x:\n", |
| arbel, status ); |
| DBGC_HD ( arbel, &hcr, sizeof ( hcr ) ); |
| return -EIO; |
| } |
| |
| /* Read output parameters, if any */ |
| hcr.u.dwords[3] = readl ( arbel->config + ARBEL_HCR_REG ( 3 ) ); |
| hcr.u.dwords[4] = readl ( arbel->config + ARBEL_HCR_REG ( 4 ) ); |
| memcpy ( out, out_buffer, out_len ); |
| if ( out_len ) { |
| DBGC2 ( arbel, "Output:\n" ); |
| DBGC2_HD ( arbel, out, ( ( out_len < 512 ) ? out_len : 512 ) ); |
| } |
| |
| return 0; |
| } |
| |
| static inline int |
| arbel_cmd_query_dev_lim ( struct arbel *arbel, |
| struct arbelprm_query_dev_lim *dev_lim ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_OUT_CMD ( ARBEL_HCR_QUERY_DEV_LIM, |
| 1, sizeof ( *dev_lim ) ), |
| 0, NULL, 0, dev_lim ); |
| } |
| |
| static inline int |
| arbel_cmd_query_fw ( struct arbel *arbel, struct arbelprm_query_fw *fw ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_OUT_CMD ( ARBEL_HCR_QUERY_FW, |
| 1, sizeof ( *fw ) ), |
| 0, NULL, 0, fw ); |
| } |
| |
| static inline int |
| arbel_cmd_init_hca ( struct arbel *arbel, |
| const struct arbelprm_init_hca *init_hca ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_IN_CMD ( ARBEL_HCR_INIT_HCA, |
| 1, sizeof ( *init_hca ) ), |
| 0, init_hca, 0, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_close_hca ( struct arbel *arbel ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_VOID_CMD ( ARBEL_HCR_CLOSE_HCA ), |
| 0, NULL, 0, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_init_ib ( struct arbel *arbel, unsigned int port, |
| const struct arbelprm_init_ib *init_ib ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_IN_CMD ( ARBEL_HCR_INIT_IB, |
| 1, sizeof ( *init_ib ) ), |
| 0, init_ib, port, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_close_ib ( struct arbel *arbel, unsigned int port ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_VOID_CMD ( ARBEL_HCR_CLOSE_IB ), |
| 0, NULL, port, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_sw2hw_mpt ( struct arbel *arbel, unsigned int index, |
| const struct arbelprm_mpt *mpt ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_IN_CMD ( ARBEL_HCR_SW2HW_MPT, |
| 1, sizeof ( *mpt ) ), |
| 0, mpt, index, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_map_eq ( struct arbel *arbel, unsigned long index_map, |
| const struct arbelprm_event_mask *mask ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_IN_CMD ( ARBEL_HCR_MAP_EQ, |
| 0, sizeof ( *mask ) ), |
| 0, mask, index_map, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_sw2hw_eq ( struct arbel *arbel, unsigned int index, |
| const struct arbelprm_eqc *eqctx ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_IN_CMD ( ARBEL_HCR_SW2HW_EQ, |
| 1, sizeof ( *eqctx ) ), |
| 0, eqctx, index, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_hw2sw_eq ( struct arbel *arbel, unsigned int index, |
| struct arbelprm_eqc *eqctx ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_OUT_CMD ( ARBEL_HCR_HW2SW_EQ, |
| 1, sizeof ( *eqctx ) ), |
| 1, NULL, index, eqctx ); |
| } |
| |
| static inline int |
| arbel_cmd_sw2hw_cq ( struct arbel *arbel, unsigned long cqn, |
| const struct arbelprm_completion_queue_context *cqctx ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_IN_CMD ( ARBEL_HCR_SW2HW_CQ, |
| 1, sizeof ( *cqctx ) ), |
| 0, cqctx, cqn, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_hw2sw_cq ( struct arbel *arbel, unsigned long cqn, |
| struct arbelprm_completion_queue_context *cqctx) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_OUT_CMD ( ARBEL_HCR_HW2SW_CQ, |
| 1, sizeof ( *cqctx ) ), |
| 0, NULL, cqn, cqctx ); |
| } |
| |
| static inline int |
| arbel_cmd_rst2init_qpee ( struct arbel *arbel, unsigned long qpn, |
| const struct arbelprm_qp_ee_state_transitions *ctx ){ |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_IN_CMD ( ARBEL_HCR_RST2INIT_QPEE, |
| 1, sizeof ( *ctx ) ), |
| 0, ctx, qpn, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_init2rtr_qpee ( struct arbel *arbel, unsigned long qpn, |
| const struct arbelprm_qp_ee_state_transitions *ctx ){ |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_IN_CMD ( ARBEL_HCR_INIT2RTR_QPEE, |
| 1, sizeof ( *ctx ) ), |
| 0, ctx, qpn, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_rtr2rts_qpee ( struct arbel *arbel, unsigned long qpn, |
| const struct arbelprm_qp_ee_state_transitions *ctx ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_IN_CMD ( ARBEL_HCR_RTR2RTS_QPEE, |
| 1, sizeof ( *ctx ) ), |
| 0, ctx, qpn, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_rts2rts_qp ( struct arbel *arbel, unsigned long qpn, |
| const struct arbelprm_qp_ee_state_transitions *ctx ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_IN_CMD ( ARBEL_HCR_RTS2RTS_QPEE, |
| 1, sizeof ( *ctx ) ), |
| 0, ctx, qpn, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_2rst_qpee ( struct arbel *arbel, unsigned long qpn ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_VOID_CMD ( ARBEL_HCR_2RST_QPEE ), |
| 0x03, NULL, qpn, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_mad_ifc ( struct arbel *arbel, unsigned int port, |
| union arbelprm_mad *mad ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_INOUT_CMD ( ARBEL_HCR_MAD_IFC, |
| 1, sizeof ( *mad ), |
| 1, sizeof ( *mad ) ), |
| 0x03, mad, port, mad ); |
| } |
| |
| 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 ); |
| } |
| |
| static inline int |
| arbel_cmd_run_fw ( struct arbel *arbel ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_VOID_CMD ( ARBEL_HCR_RUN_FW ), |
| 0, NULL, 0, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_disable_lam ( struct arbel *arbel ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_VOID_CMD ( ARBEL_HCR_DISABLE_LAM ), |
| 0, NULL, 0, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_enable_lam ( struct arbel *arbel, struct arbelprm_access_lam *lam ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_OUT_CMD ( ARBEL_HCR_ENABLE_LAM, |
| 1, sizeof ( *lam ) ), |
| 1, NULL, 0, lam ); |
| } |
| |
| static inline int |
| arbel_cmd_unmap_icm ( struct arbel *arbel, unsigned int page_count ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_VOID_CMD ( ARBEL_HCR_UNMAP_ICM ), |
| 0, NULL, page_count, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_map_icm ( struct arbel *arbel, |
| const struct arbelprm_virtual_physical_mapping *map ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_IN_CMD ( ARBEL_HCR_MAP_ICM, |
| 1, sizeof ( *map ) ), |
| 0, map, 1, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_unmap_icm_aux ( struct arbel *arbel ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_VOID_CMD ( ARBEL_HCR_UNMAP_ICM_AUX ), |
| 0, NULL, 0, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_map_icm_aux ( struct arbel *arbel, |
| const struct arbelprm_virtual_physical_mapping *map ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_IN_CMD ( ARBEL_HCR_MAP_ICM_AUX, |
| 1, sizeof ( *map ) ), |
| 0, map, 1, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_set_icm_size ( struct arbel *arbel, |
| const struct arbelprm_scalar_parameter *icm_size, |
| struct arbelprm_scalar_parameter *icm_aux_size ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_INOUT_CMD ( ARBEL_HCR_SET_ICM_SIZE, |
| 0, sizeof ( *icm_size ), |
| 0, sizeof ( *icm_aux_size ) ), |
| 0, icm_size, 0, icm_aux_size ); |
| } |
| |
| static inline int |
| arbel_cmd_unmap_fa ( struct arbel *arbel ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_VOID_CMD ( ARBEL_HCR_UNMAP_FA ), |
| 0, NULL, 0, NULL ); |
| } |
| |
| static inline int |
| arbel_cmd_map_fa ( struct arbel *arbel, |
| const struct arbelprm_virtual_physical_mapping *map ) { |
| return arbel_cmd ( arbel, |
| ARBEL_HCR_IN_CMD ( ARBEL_HCR_MAP_FA, |
| 1, sizeof ( *map ) ), |
| 0, map, 1, NULL ); |
| } |
| |
| /*************************************************************************** |
| * |
| * MAD operations |
| * |
| *************************************************************************** |
| */ |
| |
| /** |
| * Issue management datagram |
| * |
| * @v ibdev Infiniband device |
| * @v mad Management datagram |
| * @ret rc Return status code |
| */ |
| static int arbel_mad ( struct ib_device *ibdev, union ib_mad *mad ) { |
| struct arbel *arbel = ib_get_drvdata ( ibdev ); |
| union arbelprm_mad mad_ifc; |
| int rc; |
| |
| linker_assert ( sizeof ( *mad ) == sizeof ( mad_ifc.mad ), |
| mad_size_mismatch ); |
| |
| /* Copy in request packet */ |
| memcpy ( &mad_ifc.mad, mad, sizeof ( mad_ifc.mad ) ); |
| |
| /* Issue MAD */ |
| if ( ( rc = arbel_cmd_mad_ifc ( arbel, ibdev->port, |
| &mad_ifc ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p could not issue MAD IFC: %s\n", |
| arbel, strerror ( rc ) ); |
| return rc; |
| } |
| |
| /* Copy out reply packet */ |
| memcpy ( mad, &mad_ifc.mad, sizeof ( *mad ) ); |
| |
| if ( mad->hdr.status != 0 ) { |
| DBGC ( arbel, "Arbel %p MAD IFC status %04x\n", |
| arbel, ntohs ( mad->hdr.status ) ); |
| return -EIO; |
| } |
| return 0; |
| } |
| |
| /*************************************************************************** |
| * |
| * Completion queue operations |
| * |
| *************************************************************************** |
| */ |
| |
| /** |
| * Create completion queue |
| * |
| * @v ibdev Infiniband device |
| * @v cq Completion queue |
| * @ret rc Return status code |
| */ |
| static int arbel_create_cq ( struct ib_device *ibdev, |
| struct ib_completion_queue *cq ) { |
| struct arbel *arbel = ib_get_drvdata ( ibdev ); |
| struct arbel_completion_queue *arbel_cq; |
| struct arbelprm_completion_queue_context cqctx; |
| struct arbelprm_cq_ci_db_record *ci_db_rec; |
| struct arbelprm_cq_arm_db_record *arm_db_rec; |
| int cqn_offset; |
| unsigned int i; |
| int rc; |
| |
| /* Find a free completion queue number */ |
| cqn_offset = arbel_alloc_qn_offset ( arbel->cq_inuse, ARBEL_MAX_CQS ); |
| if ( cqn_offset < 0 ) { |
| DBGC ( arbel, "Arbel %p out of completion queues\n", arbel ); |
| rc = cqn_offset; |
| goto err_cqn_offset; |
| } |
| cq->cqn = ( arbel->limits.reserved_cqs + cqn_offset ); |
| |
| /* Allocate control structures */ |
| arbel_cq = zalloc ( sizeof ( *arbel_cq ) ); |
| if ( ! arbel_cq ) { |
| rc = -ENOMEM; |
| goto err_arbel_cq; |
| } |
| arbel_cq->ci_doorbell_idx = arbel_cq_ci_doorbell_idx ( cqn_offset ); |
| arbel_cq->arm_doorbell_idx = arbel_cq_arm_doorbell_idx ( cqn_offset ); |
| |
| /* Allocate completion queue itself */ |
| arbel_cq->cqe_size = ( cq->num_cqes * sizeof ( arbel_cq->cqe[0] ) ); |
| arbel_cq->cqe = malloc_dma ( arbel_cq->cqe_size, |
| sizeof ( arbel_cq->cqe[0] ) ); |
| if ( ! arbel_cq->cqe ) { |
| rc = -ENOMEM; |
| goto err_cqe; |
| } |
| memset ( arbel_cq->cqe, 0, arbel_cq->cqe_size ); |
| for ( i = 0 ; i < cq->num_cqes ; i++ ) { |
| MLX_FILL_1 ( &arbel_cq->cqe[i].normal, 7, owner, 1 ); |
| } |
| barrier(); |
| |
| /* Initialise doorbell records */ |
| ci_db_rec = &arbel->db_rec[arbel_cq->ci_doorbell_idx].cq_ci; |
| MLX_FILL_1 ( ci_db_rec, 0, counter, 0 ); |
| MLX_FILL_2 ( ci_db_rec, 1, |
| res, ARBEL_UAR_RES_CQ_CI, |
| cq_number, cq->cqn ); |
| arm_db_rec = &arbel->db_rec[arbel_cq->arm_doorbell_idx].cq_arm; |
| MLX_FILL_1 ( arm_db_rec, 0, counter, 0 ); |
| MLX_FILL_2 ( arm_db_rec, 1, |
| res, ARBEL_UAR_RES_CQ_ARM, |
| cq_number, cq->cqn ); |
| |
| /* Hand queue over to hardware */ |
| memset ( &cqctx, 0, sizeof ( cqctx ) ); |
| MLX_FILL_1 ( &cqctx, 0, st, 0xa /* "Event fired" */ ); |
| MLX_FILL_1 ( &cqctx, 2, start_address_l, |
| virt_to_bus ( arbel_cq->cqe ) ); |
| MLX_FILL_2 ( &cqctx, 3, |
| usr_page, arbel->limits.reserved_uars, |
| log_cq_size, fls ( cq->num_cqes - 1 ) ); |
| MLX_FILL_1 ( &cqctx, 5, c_eqn, ARBEL_NO_EQ ); |
| MLX_FILL_1 ( &cqctx, 6, pd, ARBEL_GLOBAL_PD ); |
| MLX_FILL_1 ( &cqctx, 7, l_key, arbel->reserved_lkey ); |
| MLX_FILL_1 ( &cqctx, 12, cqn, cq->cqn ); |
| MLX_FILL_1 ( &cqctx, 13, |
| cq_ci_db_record, arbel_cq->ci_doorbell_idx ); |
| MLX_FILL_1 ( &cqctx, 14, |
| cq_state_db_record, arbel_cq->arm_doorbell_idx ); |
| if ( ( rc = arbel_cmd_sw2hw_cq ( arbel, cq->cqn, &cqctx ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p SW2HW_CQ failed: %s\n", |
| arbel, strerror ( rc ) ); |
| goto err_sw2hw_cq; |
| } |
| |
| DBGC ( arbel, "Arbel %p CQN %#lx ring at [%p,%p)\n", |
| arbel, cq->cqn, arbel_cq->cqe, |
| ( ( ( void * ) arbel_cq->cqe ) + arbel_cq->cqe_size ) ); |
| ib_cq_set_drvdata ( cq, arbel_cq ); |
| return 0; |
| |
| err_sw2hw_cq: |
| MLX_FILL_1 ( ci_db_rec, 1, res, ARBEL_UAR_RES_NONE ); |
| MLX_FILL_1 ( arm_db_rec, 1, res, ARBEL_UAR_RES_NONE ); |
| free_dma ( arbel_cq->cqe, arbel_cq->cqe_size ); |
| err_cqe: |
| free ( arbel_cq ); |
| err_arbel_cq: |
| arbel_free_qn_offset ( arbel->cq_inuse, cqn_offset ); |
| err_cqn_offset: |
| return rc; |
| } |
| |
| /** |
| * Destroy completion queue |
| * |
| * @v ibdev Infiniband device |
| * @v cq Completion queue |
| */ |
| static void arbel_destroy_cq ( struct ib_device *ibdev, |
| struct ib_completion_queue *cq ) { |
| struct arbel *arbel = ib_get_drvdata ( ibdev ); |
| struct arbel_completion_queue *arbel_cq = ib_cq_get_drvdata ( cq ); |
| struct arbelprm_completion_queue_context cqctx; |
| struct arbelprm_cq_ci_db_record *ci_db_rec; |
| struct arbelprm_cq_arm_db_record *arm_db_rec; |
| int cqn_offset; |
| int rc; |
| |
| /* Take ownership back from hardware */ |
| if ( ( rc = arbel_cmd_hw2sw_cq ( arbel, cq->cqn, &cqctx ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p FATAL HW2SW_CQ failed on CQN %#lx: " |
| "%s\n", arbel, cq->cqn, strerror ( rc ) ); |
| /* Leak memory and return; at least we avoid corruption */ |
| return; |
| } |
| |
| /* Clear doorbell records */ |
| ci_db_rec = &arbel->db_rec[arbel_cq->ci_doorbell_idx].cq_ci; |
| arm_db_rec = &arbel->db_rec[arbel_cq->arm_doorbell_idx].cq_arm; |
| MLX_FILL_1 ( ci_db_rec, 1, res, ARBEL_UAR_RES_NONE ); |
| MLX_FILL_1 ( arm_db_rec, 1, res, ARBEL_UAR_RES_NONE ); |
| |
| /* Free memory */ |
| free_dma ( arbel_cq->cqe, arbel_cq->cqe_size ); |
| free ( arbel_cq ); |
| |
| /* Mark queue number as free */ |
| cqn_offset = ( cq->cqn - arbel->limits.reserved_cqs ); |
| arbel_free_qn_offset ( arbel->cq_inuse, cqn_offset ); |
| |
| ib_cq_set_drvdata ( cq, NULL ); |
| } |
| |
| /*************************************************************************** |
| * |
| * Queue pair operations |
| * |
| *************************************************************************** |
| */ |
| |
| /** |
| * Create send work queue |
| * |
| * @v arbel_send_wq Send work queue |
| * @v num_wqes Number of work queue entries |
| * @ret rc Return status code |
| */ |
| static int arbel_create_send_wq ( struct arbel_send_work_queue *arbel_send_wq, |
| unsigned int num_wqes ) { |
| struct arbelprm_ud_send_wqe *wqe; |
| struct arbelprm_ud_send_wqe *next_wqe; |
| unsigned int wqe_idx_mask; |
| unsigned int i; |
| |
| /* Allocate work queue */ |
| arbel_send_wq->wqe_size = ( num_wqes * |
| sizeof ( arbel_send_wq->wqe[0] ) ); |
| arbel_send_wq->wqe = malloc_dma ( arbel_send_wq->wqe_size, |
| sizeof ( arbel_send_wq->wqe[0] ) ); |
| if ( ! arbel_send_wq->wqe ) |
| return -ENOMEM; |
| memset ( arbel_send_wq->wqe, 0, arbel_send_wq->wqe_size ); |
| |
| /* Link work queue entries */ |
| wqe_idx_mask = ( num_wqes - 1 ); |
| for ( i = 0 ; i < num_wqes ; i++ ) { |
| wqe = &arbel_send_wq->wqe[i].ud; |
| next_wqe = &arbel_send_wq->wqe[ ( i + 1 ) & wqe_idx_mask ].ud; |
| MLX_FILL_1 ( &wqe->next, 0, nda_31_6, |
| ( virt_to_bus ( next_wqe ) >> 6 ) ); |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * Create receive work queue |
| * |
| * @v arbel_recv_wq Receive work queue |
| * @v num_wqes Number of work queue entries |
| * @ret rc Return status code |
| */ |
| static int arbel_create_recv_wq ( struct arbel_recv_work_queue *arbel_recv_wq, |
| unsigned int num_wqes ) { |
| struct arbelprm_recv_wqe *wqe; |
| struct arbelprm_recv_wqe *next_wqe; |
| unsigned int wqe_idx_mask; |
| size_t nds; |
| unsigned int i; |
| unsigned int j; |
| |
| /* Allocate work queue */ |
| arbel_recv_wq->wqe_size = ( num_wqes * |
| sizeof ( arbel_recv_wq->wqe[0] ) ); |
| arbel_recv_wq->wqe = malloc_dma ( arbel_recv_wq->wqe_size, |
| sizeof ( arbel_recv_wq->wqe[0] ) ); |
| if ( ! arbel_recv_wq->wqe ) |
| return -ENOMEM; |
| memset ( arbel_recv_wq->wqe, 0, arbel_recv_wq->wqe_size ); |
| |
| /* Link work queue entries */ |
| wqe_idx_mask = ( num_wqes - 1 ); |
| nds = ( ( offsetof ( typeof ( *wqe ), data ) + |
| sizeof ( wqe->data[0] ) ) >> 4 ); |
| for ( i = 0 ; i < num_wqes ; i++ ) { |
| wqe = &arbel_recv_wq->wqe[i].recv; |
| next_wqe = &arbel_recv_wq->wqe[( i + 1 ) & wqe_idx_mask].recv; |
| MLX_FILL_1 ( &wqe->next, 0, nda_31_6, |
| ( virt_to_bus ( next_wqe ) >> 6 ) ); |
| MLX_FILL_1 ( &wqe->next, 1, nds, ( sizeof ( *wqe ) / 16 ) ); |
| for ( j = 0 ; ( ( ( void * ) &wqe->data[j] ) < |
| ( ( void * ) ( wqe + 1 ) ) ) ; j++ ) { |
| MLX_FILL_1 ( &wqe->data[j], 1, |
| l_key, ARBEL_INVALID_LKEY ); |
| } |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * Create queue pair |
| * |
| * @v ibdev Infiniband device |
| * @v qp Queue pair |
| * @ret rc Return status code |
| */ |
| static int arbel_create_qp ( struct ib_device *ibdev, |
| struct ib_queue_pair *qp ) { |
| struct arbel *arbel = ib_get_drvdata ( ibdev ); |
| struct arbel_queue_pair *arbel_qp; |
| struct arbelprm_qp_ee_state_transitions qpctx; |
| struct arbelprm_qp_db_record *send_db_rec; |
| struct arbelprm_qp_db_record *recv_db_rec; |
| int qpn_offset; |
| int rc; |
| |
| /* Find a free queue pair number */ |
| qpn_offset = arbel_alloc_qn_offset ( arbel->qp_inuse, ARBEL_MAX_QPS ); |
| if ( qpn_offset < 0 ) { |
| DBGC ( arbel, "Arbel %p out of queue pairs\n", arbel ); |
| rc = qpn_offset; |
| goto err_qpn_offset; |
| } |
| qp->qpn = ( ARBEL_QPN_BASE + arbel->limits.reserved_qps + qpn_offset ); |
| |
| /* Allocate control structures */ |
| arbel_qp = zalloc ( sizeof ( *arbel_qp ) ); |
| if ( ! arbel_qp ) { |
| rc = -ENOMEM; |
| goto err_arbel_qp; |
| } |
| arbel_qp->send.doorbell_idx = arbel_send_doorbell_idx ( qpn_offset ); |
| arbel_qp->recv.doorbell_idx = arbel_recv_doorbell_idx ( qpn_offset ); |
| |
| /* Create send and receive work queues */ |
| if ( ( rc = arbel_create_send_wq ( &arbel_qp->send, |
| qp->send.num_wqes ) ) != 0 ) |
| goto err_create_send_wq; |
| if ( ( rc = arbel_create_recv_wq ( &arbel_qp->recv, |
| qp->recv.num_wqes ) ) != 0 ) |
| goto err_create_recv_wq; |
| |
| /* Initialise doorbell records */ |
| send_db_rec = &arbel->db_rec[arbel_qp->send.doorbell_idx].qp; |
| MLX_FILL_1 ( send_db_rec, 0, counter, 0 ); |
| MLX_FILL_2 ( send_db_rec, 1, |
| res, ARBEL_UAR_RES_SQ, |
| qp_number, qp->qpn ); |
| recv_db_rec = &arbel->db_rec[arbel_qp->recv.doorbell_idx].qp; |
| MLX_FILL_1 ( recv_db_rec, 0, counter, 0 ); |
| MLX_FILL_2 ( recv_db_rec, 1, |
| res, ARBEL_UAR_RES_RQ, |
| qp_number, qp->qpn ); |
| |
| /* Hand queue over to hardware */ |
| memset ( &qpctx, 0, sizeof ( qpctx ) ); |
| MLX_FILL_3 ( &qpctx, 2, |
| qpc_eec_data.de, 1, |
| qpc_eec_data.pm_state, 0x03 /* Always 0x03 for UD */, |
| qpc_eec_data.st, ARBEL_ST_UD ); |
| MLX_FILL_6 ( &qpctx, 4, |
| qpc_eec_data.mtu, ARBEL_MTU_2048, |
| qpc_eec_data.msg_max, 11 /* 2^11 = 2048 */, |
| qpc_eec_data.log_rq_size, fls ( qp->recv.num_wqes - 1 ), |
| qpc_eec_data.log_rq_stride, |
| ( fls ( sizeof ( arbel_qp->recv.wqe[0] ) - 1 ) - 4 ), |
| qpc_eec_data.log_sq_size, fls ( qp->send.num_wqes - 1 ), |
| qpc_eec_data.log_sq_stride, |
| ( fls ( sizeof ( arbel_qp->send.wqe[0] ) - 1 ) - 4 ) ); |
| MLX_FILL_1 ( &qpctx, 5, |
| qpc_eec_data.usr_page, arbel->limits.reserved_uars ); |
| MLX_FILL_1 ( &qpctx, 10, qpc_eec_data.primary_address_path.port_number, |
| ibdev->port ); |
| MLX_FILL_1 ( &qpctx, 27, qpc_eec_data.pd, ARBEL_GLOBAL_PD ); |
| MLX_FILL_1 ( &qpctx, 29, qpc_eec_data.wqe_lkey, arbel->reserved_lkey ); |
| MLX_FILL_1 ( &qpctx, 30, qpc_eec_data.ssc, 1 ); |
| MLX_FILL_1 ( &qpctx, 33, qpc_eec_data.cqn_snd, qp->send.cq->cqn ); |
| MLX_FILL_1 ( &qpctx, 34, qpc_eec_data.snd_wqe_base_adr_l, |
| ( virt_to_bus ( arbel_qp->send.wqe ) >> 6 ) ); |
| MLX_FILL_1 ( &qpctx, 35, qpc_eec_data.snd_db_record_index, |
| arbel_qp->send.doorbell_idx ); |
| MLX_FILL_1 ( &qpctx, 38, qpc_eec_data.rsc, 1 ); |
| MLX_FILL_1 ( &qpctx, 41, qpc_eec_data.cqn_rcv, qp->recv.cq->cqn ); |
| MLX_FILL_1 ( &qpctx, 42, qpc_eec_data.rcv_wqe_base_adr_l, |
| ( virt_to_bus ( arbel_qp->recv.wqe ) >> 6 ) ); |
| MLX_FILL_1 ( &qpctx, 43, qpc_eec_data.rcv_db_record_index, |
| arbel_qp->recv.doorbell_idx ); |
| if ( ( rc = arbel_cmd_rst2init_qpee ( arbel, qp->qpn, &qpctx )) != 0 ){ |
| DBGC ( arbel, "Arbel %p RST2INIT_QPEE failed: %s\n", |
| arbel, strerror ( rc ) ); |
| goto err_rst2init_qpee; |
| } |
| memset ( &qpctx, 0, sizeof ( qpctx ) ); |
| MLX_FILL_2 ( &qpctx, 4, |
| qpc_eec_data.mtu, ARBEL_MTU_2048, |
| qpc_eec_data.msg_max, 11 /* 2^11 = 2048 */ ); |
| if ( ( rc = arbel_cmd_init2rtr_qpee ( arbel, qp->qpn, &qpctx )) != 0 ){ |
| DBGC ( arbel, "Arbel %p INIT2RTR_QPEE failed: %s\n", |
| arbel, strerror ( rc ) ); |
| goto err_init2rtr_qpee; |
| } |
| memset ( &qpctx, 0, sizeof ( qpctx ) ); |
| if ( ( rc = arbel_cmd_rtr2rts_qpee ( arbel, qp->qpn, &qpctx ) ) != 0 ){ |
| DBGC ( arbel, "Arbel %p RTR2RTS_QPEE failed: %s\n", |
| arbel, strerror ( rc ) ); |
| goto err_rtr2rts_qpee; |
| } |
| |
| DBGC ( arbel, "Arbel %p QPN %#lx send ring at [%p,%p)\n", |
| arbel, qp->qpn, arbel_qp->send.wqe, |
| ( ( (void *) arbel_qp->send.wqe ) + arbel_qp->send.wqe_size ) ); |
| DBGC ( arbel, "Arbel %p QPN %#lx receive ring at [%p,%p)\n", |
| arbel, qp->qpn, arbel_qp->recv.wqe, |
| ( ( (void *) arbel_qp->recv.wqe ) + arbel_qp->recv.wqe_size ) ); |
| ib_qp_set_drvdata ( qp, arbel_qp ); |
| return 0; |
| |
| err_rtr2rts_qpee: |
| err_init2rtr_qpee: |
| arbel_cmd_2rst_qpee ( arbel, qp->qpn ); |
| err_rst2init_qpee: |
| MLX_FILL_1 ( send_db_rec, 1, res, ARBEL_UAR_RES_NONE ); |
| MLX_FILL_1 ( recv_db_rec, 1, res, ARBEL_UAR_RES_NONE ); |
| free_dma ( arbel_qp->recv.wqe, arbel_qp->recv.wqe_size ); |
| err_create_recv_wq: |
| free_dma ( arbel_qp->send.wqe, arbel_qp->send.wqe_size ); |
| err_create_send_wq: |
| free ( arbel_qp ); |
| err_arbel_qp: |
| arbel_free_qn_offset ( arbel->qp_inuse, qpn_offset ); |
| err_qpn_offset: |
| return rc; |
| } |
| |
| /** |
| * Modify queue pair |
| * |
| * @v ibdev Infiniband device |
| * @v qp Queue pair |
| * @ret rc Return status code |
| */ |
| static int arbel_modify_qp ( struct ib_device *ibdev, |
| struct ib_queue_pair *qp ) { |
| struct arbel *arbel = ib_get_drvdata ( ibdev ); |
| struct arbelprm_qp_ee_state_transitions qpctx; |
| int rc; |
| |
| /* Issue RTS2RTS_QP */ |
| memset ( &qpctx, 0, sizeof ( qpctx ) ); |
| MLX_FILL_1 ( &qpctx, 0, opt_param_mask, ARBEL_QPEE_OPT_PARAM_QKEY ); |
| MLX_FILL_1 ( &qpctx, 44, qpc_eec_data.q_key, qp->qkey ); |
| if ( ( rc = arbel_cmd_rts2rts_qp ( arbel, qp->qpn, &qpctx ) ) != 0 ){ |
| DBGC ( arbel, "Arbel %p RTS2RTS_QP failed: %s\n", |
| arbel, strerror ( rc ) ); |
| return rc; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * Destroy queue pair |
| * |
| * @v ibdev Infiniband device |
| * @v qp Queue pair |
| */ |
| static void arbel_destroy_qp ( struct ib_device *ibdev, |
| struct ib_queue_pair *qp ) { |
| struct arbel *arbel = ib_get_drvdata ( ibdev ); |
| struct arbel_queue_pair *arbel_qp = ib_qp_get_drvdata ( qp ); |
| struct arbelprm_qp_db_record *send_db_rec; |
| struct arbelprm_qp_db_record *recv_db_rec; |
| int qpn_offset; |
| int rc; |
| |
| /* Take ownership back from hardware */ |
| if ( ( rc = arbel_cmd_2rst_qpee ( arbel, qp->qpn ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p FATAL 2RST_QPEE failed on QPN %#lx: " |
| "%s\n", arbel, qp->qpn, strerror ( rc ) ); |
| /* Leak memory and return; at least we avoid corruption */ |
| return; |
| } |
| |
| /* Clear doorbell records */ |
| send_db_rec = &arbel->db_rec[arbel_qp->send.doorbell_idx].qp; |
| recv_db_rec = &arbel->db_rec[arbel_qp->recv.doorbell_idx].qp; |
| MLX_FILL_1 ( send_db_rec, 1, res, ARBEL_UAR_RES_NONE ); |
| MLX_FILL_1 ( recv_db_rec, 1, res, ARBEL_UAR_RES_NONE ); |
| |
| /* Free memory */ |
| free_dma ( arbel_qp->send.wqe, arbel_qp->send.wqe_size ); |
| free_dma ( arbel_qp->recv.wqe, arbel_qp->recv.wqe_size ); |
| free ( arbel_qp ); |
| |
| /* Mark queue number as free */ |
| qpn_offset = ( qp->qpn - ARBEL_QPN_BASE - arbel->limits.reserved_qps ); |
| arbel_free_qn_offset ( arbel->qp_inuse, qpn_offset ); |
| |
| ib_qp_set_drvdata ( qp, NULL ); |
| } |
| |
| /*************************************************************************** |
| * |
| * Work request operations |
| * |
| *************************************************************************** |
| */ |
| |
| /** |
| * Ring doorbell register in UAR |
| * |
| * @v arbel Arbel device |
| * @v db_reg Doorbell register structure |
| * @v offset Address of doorbell |
| */ |
| static void arbel_ring_doorbell ( struct arbel *arbel, |
| union arbelprm_doorbell_register *db_reg, |
| unsigned int offset ) { |
| |
| DBGC2 ( arbel, "Arbel %p ringing doorbell %08x:%08x at %lx\n", |
| arbel, db_reg->dword[0], db_reg->dword[1], |
| virt_to_phys ( arbel->uar + offset ) ); |
| |
| barrier(); |
| writel ( db_reg->dword[0], ( arbel->uar + offset + 0 ) ); |
| barrier(); |
| writel ( db_reg->dword[1], ( arbel->uar + offset + 4 ) ); |
| } |
| |
| /** GID used for GID-less send work queue entries */ |
| static const struct ib_gid arbel_no_gid = { |
| { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0 } } |
| }; |
| |
| /** |
| * Post send work queue entry |
| * |
| * @v ibdev Infiniband device |
| * @v qp Queue pair |
| * @v av Address vector |
| * @v iobuf I/O buffer |
| * @ret rc Return status code |
| */ |
| static int arbel_post_send ( struct ib_device *ibdev, |
| struct ib_queue_pair *qp, |
| struct ib_address_vector *av, |
| struct io_buffer *iobuf ) { |
| struct arbel *arbel = ib_get_drvdata ( ibdev ); |
| struct arbel_queue_pair *arbel_qp = ib_qp_get_drvdata ( qp ); |
| struct ib_work_queue *wq = &qp->send; |
| struct arbel_send_work_queue *arbel_send_wq = &arbel_qp->send; |
| struct arbelprm_ud_send_wqe *prev_wqe; |
| struct arbelprm_ud_send_wqe *wqe; |
| struct arbelprm_qp_db_record *qp_db_rec; |
| union arbelprm_doorbell_register db_reg; |
| const struct ib_gid *gid; |
| unsigned int wqe_idx_mask; |
| size_t nds; |
| |
| /* Allocate work queue entry */ |
| wqe_idx_mask = ( wq->num_wqes - 1 ); |
| if ( wq->iobufs[wq->next_idx & wqe_idx_mask] ) { |
| DBGC ( arbel, "Arbel %p send queue full", arbel ); |
| return -ENOBUFS; |
| } |
| wq->iobufs[wq->next_idx & wqe_idx_mask] = iobuf; |
| prev_wqe = &arbel_send_wq->wqe[(wq->next_idx - 1) & wqe_idx_mask].ud; |
| wqe = &arbel_send_wq->wqe[wq->next_idx & wqe_idx_mask].ud; |
| |
| /* Construct work queue entry */ |
| MLX_FILL_1 ( &wqe->next, 1, always1, 1 ); |
| memset ( &wqe->ctrl, 0, sizeof ( wqe->ctrl ) ); |
| MLX_FILL_1 ( &wqe->ctrl, 0, always1, 1 ); |
| memset ( &wqe->ud, 0, sizeof ( wqe->ud ) ); |
| MLX_FILL_2 ( &wqe->ud, 0, |
| ud_address_vector.pd, ARBEL_GLOBAL_PD, |
| ud_address_vector.port_number, ibdev->port ); |
| MLX_FILL_2 ( &wqe->ud, 1, |
| ud_address_vector.rlid, av->lid, |
| ud_address_vector.g, av->gid_present ); |
| MLX_FILL_2 ( &wqe->ud, 2, |
| ud_address_vector.max_stat_rate, |
| ( ( av->rate >= 3 ) ? 0 : 1 ), |
| ud_address_vector.msg, 3 ); |
| MLX_FILL_1 ( &wqe->ud, 3, ud_address_vector.sl, av->sl ); |
| gid = ( av->gid_present ? &av->gid : &arbel_no_gid ); |
| memcpy ( &wqe->ud.u.dwords[4], gid, sizeof ( *gid ) ); |
| MLX_FILL_1 ( &wqe->ud, 8, destination_qp, av->qpn ); |
| MLX_FILL_1 ( &wqe->ud, 9, q_key, av->qkey ); |
| MLX_FILL_1 ( &wqe->data[0], 0, byte_count, iob_len ( iobuf ) ); |
| MLX_FILL_1 ( &wqe->data[0], 1, l_key, arbel->reserved_lkey ); |
| MLX_FILL_1 ( &wqe->data[0], 3, |
| local_address_l, virt_to_bus ( iobuf->data ) ); |
| |
| /* Update previous work queue entry's "next" field */ |
| nds = ( ( offsetof ( typeof ( *wqe ), data ) + |
| sizeof ( wqe->data[0] ) ) >> 4 ); |
| MLX_SET ( &prev_wqe->next, nopcode, ARBEL_OPCODE_SEND ); |
| MLX_FILL_3 ( &prev_wqe->next, 1, |
| nds, nds, |
| f, 1, |
| always1, 1 ); |
| |
| /* Update doorbell record */ |
| barrier(); |
| qp_db_rec = &arbel->db_rec[arbel_send_wq->doorbell_idx].qp; |
| MLX_FILL_1 ( qp_db_rec, 0, |
| counter, ( ( wq->next_idx + 1 ) & 0xffff ) ); |
| |
| /* Ring doorbell register */ |
| MLX_FILL_4 ( &db_reg.send, 0, |
| nopcode, ARBEL_OPCODE_SEND, |
| f, 1, |
| wqe_counter, ( wq->next_idx & 0xffff ), |
| wqe_cnt, 1 ); |
| MLX_FILL_2 ( &db_reg.send, 1, |
| nds, nds, |
| qpn, qp->qpn ); |
| arbel_ring_doorbell ( arbel, &db_reg, ARBEL_DB_POST_SND_OFFSET ); |
| |
| /* Update work queue's index */ |
| wq->next_idx++; |
| |
| return 0; |
| } |
| |
| /** |
| * Post receive work queue entry |
| * |
| * @v ibdev Infiniband device |
| * @v qp Queue pair |
| * @v iobuf I/O buffer |
| * @ret rc Return status code |
| */ |
| static int arbel_post_recv ( struct ib_device *ibdev, |
| struct ib_queue_pair *qp, |
| struct io_buffer *iobuf ) { |
| struct arbel *arbel = ib_get_drvdata ( ibdev ); |
| struct arbel_queue_pair *arbel_qp = ib_qp_get_drvdata ( qp ); |
| struct ib_work_queue *wq = &qp->recv; |
| struct arbel_recv_work_queue *arbel_recv_wq = &arbel_qp->recv; |
| struct arbelprm_recv_wqe *wqe; |
| union arbelprm_doorbell_record *db_rec; |
| unsigned int wqe_idx_mask; |
| |
| /* Allocate work queue entry */ |
| wqe_idx_mask = ( wq->num_wqes - 1 ); |
| if ( wq->iobufs[wq->next_idx & wqe_idx_mask] ) { |
| DBGC ( arbel, "Arbel %p receive queue full", arbel ); |
| return -ENOBUFS; |
| } |
| wq->iobufs[wq->next_idx & wqe_idx_mask] = iobuf; |
| wqe = &arbel_recv_wq->wqe[wq->next_idx & wqe_idx_mask].recv; |
| |
| /* Construct work queue entry */ |
| MLX_FILL_1 ( &wqe->data[0], 0, byte_count, iob_tailroom ( iobuf ) ); |
| MLX_FILL_1 ( &wqe->data[0], 1, l_key, arbel->reserved_lkey ); |
| MLX_FILL_1 ( &wqe->data[0], 3, |
| local_address_l, virt_to_bus ( iobuf->data ) ); |
| |
| /* Update doorbell record */ |
| barrier(); |
| db_rec = &arbel->db_rec[arbel_recv_wq->doorbell_idx]; |
| MLX_FILL_1 ( &db_rec->qp, 0, |
| counter, ( ( wq->next_idx + 1 ) & 0xffff ) ); |
| |
| /* Update work queue's index */ |
| wq->next_idx++; |
| |
| return 0; |
| } |
| |
| /** |
| * Handle completion |
| * |
| * @v ibdev Infiniband device |
| * @v cq Completion queue |
| * @v cqe Hardware completion queue entry |
| * @ret rc Return status code |
| */ |
| static int arbel_complete ( struct ib_device *ibdev, |
| struct ib_completion_queue *cq, |
| union arbelprm_completion_entry *cqe ) { |
| struct arbel *arbel = ib_get_drvdata ( ibdev ); |
| struct ib_work_queue *wq; |
| struct ib_queue_pair *qp; |
| struct arbel_queue_pair *arbel_qp; |
| struct arbel_send_work_queue *arbel_send_wq; |
| struct arbel_recv_work_queue *arbel_recv_wq; |
| struct arbelprm_recv_wqe *recv_wqe; |
| struct io_buffer *iobuf; |
| struct ib_address_vector av; |
| struct ib_global_route_header *grh; |
| unsigned int opcode; |
| unsigned long qpn; |
| int is_send; |
| unsigned long wqe_adr; |
| unsigned int wqe_idx; |
| size_t len; |
| int rc = 0; |
| |
| /* Parse completion */ |
| qpn = MLX_GET ( &cqe->normal, my_qpn ); |
| is_send = MLX_GET ( &cqe->normal, s ); |
| wqe_adr = ( MLX_GET ( &cqe->normal, wqe_adr ) << 6 ); |
| opcode = MLX_GET ( &cqe->normal, opcode ); |
| if ( opcode >= ARBEL_OPCODE_RECV_ERROR ) { |
| /* "s" field is not valid for error opcodes */ |
| is_send = ( opcode == ARBEL_OPCODE_SEND_ERROR ); |
| DBGC ( arbel, "Arbel %p CPN %lx syndrome %x vendor %x\n", |
| arbel, cq->cqn, MLX_GET ( &cqe->error, syndrome ), |
| MLX_GET ( &cqe->error, vendor_code ) ); |
| rc = -EIO; |
| /* Don't return immediately; propagate error to completer */ |
| } |
| |
| /* Identify work queue */ |
| wq = ib_find_wq ( cq, qpn, is_send ); |
| if ( ! wq ) { |
| DBGC ( arbel, "Arbel %p CQN %lx unknown %s QPN %lx\n", |
| arbel, cq->cqn, ( is_send ? "send" : "recv" ), qpn ); |
| return -EIO; |
| } |
| qp = wq->qp; |
| arbel_qp = ib_qp_get_drvdata ( qp ); |
| arbel_send_wq = &arbel_qp->send; |
| arbel_recv_wq = &arbel_qp->recv; |
| |
| /* Identify work queue entry index */ |
| if ( is_send ) { |
| wqe_idx = ( ( wqe_adr - virt_to_bus ( arbel_send_wq->wqe ) ) / |
| sizeof ( arbel_send_wq->wqe[0] ) ); |
| assert ( wqe_idx < qp->send.num_wqes ); |
| } else { |
| wqe_idx = ( ( wqe_adr - virt_to_bus ( arbel_recv_wq->wqe ) ) / |
| sizeof ( arbel_recv_wq->wqe[0] ) ); |
| assert ( wqe_idx < qp->recv.num_wqes ); |
| } |
| |
| /* Identify I/O buffer */ |
| iobuf = wq->iobufs[wqe_idx]; |
| if ( ! iobuf ) { |
| DBGC ( arbel, "Arbel %p CQN %lx QPN %lx empty WQE %x\n", |
| arbel, cq->cqn, qpn, wqe_idx ); |
| return -EIO; |
| } |
| wq->iobufs[wqe_idx] = NULL; |
| |
| if ( is_send ) { |
| /* Hand off to completion handler */ |
| ib_complete_send ( ibdev, qp, iobuf, rc ); |
| } else { |
| /* Set received length */ |
| len = MLX_GET ( &cqe->normal, byte_cnt ); |
| recv_wqe = &arbel_recv_wq->wqe[wqe_idx].recv; |
| assert ( MLX_GET ( &recv_wqe->data[0], local_address_l ) == |
| virt_to_bus ( iobuf->data ) ); |
| assert ( MLX_GET ( &recv_wqe->data[0], byte_count ) == |
| iob_tailroom ( iobuf ) ); |
| MLX_FILL_1 ( &recv_wqe->data[0], 0, byte_count, 0 ); |
| MLX_FILL_1 ( &recv_wqe->data[0], 1, |
| l_key, ARBEL_INVALID_LKEY ); |
| assert ( len <= iob_tailroom ( iobuf ) ); |
| iob_put ( iobuf, len ); |
| assert ( iob_len ( iobuf ) >= sizeof ( *grh ) ); |
| grh = iobuf->data; |
| iob_pull ( iobuf, sizeof ( *grh ) ); |
| /* Construct address vector */ |
| memset ( &av, 0, sizeof ( av ) ); |
| av.qpn = MLX_GET ( &cqe->normal, rqpn ); |
| av.lid = MLX_GET ( &cqe->normal, rlid ); |
| av.sl = MLX_GET ( &cqe->normal, sl ); |
| av.gid_present = MLX_GET ( &cqe->normal, g ); |
| memcpy ( &av.gid, &grh->sgid, sizeof ( av.gid ) ); |
| /* Hand off to completion handler */ |
| ib_complete_recv ( ibdev, qp, &av, iobuf, rc ); |
| } |
| |
| return rc; |
| } |
| |
| /** |
| * Poll completion queue |
| * |
| * @v ibdev Infiniband device |
| * @v cq Completion queue |
| */ |
| static void arbel_poll_cq ( struct ib_device *ibdev, |
| struct ib_completion_queue *cq ) { |
| struct arbel *arbel = ib_get_drvdata ( ibdev ); |
| struct arbel_completion_queue *arbel_cq = ib_cq_get_drvdata ( cq ); |
| struct arbelprm_cq_ci_db_record *ci_db_rec; |
| union arbelprm_completion_entry *cqe; |
| unsigned int cqe_idx_mask; |
| int rc; |
| |
| while ( 1 ) { |
| /* Look for completion entry */ |
| cqe_idx_mask = ( cq->num_cqes - 1 ); |
| cqe = &arbel_cq->cqe[cq->next_idx & cqe_idx_mask]; |
| if ( MLX_GET ( &cqe->normal, owner ) != 0 ) { |
| /* Entry still owned by hardware; end of poll */ |
| break; |
| } |
| |
| /* Handle completion */ |
| if ( ( rc = arbel_complete ( ibdev, cq, cqe ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p failed to complete: %s\n", |
| arbel, strerror ( rc ) ); |
| DBGC_HD ( arbel, cqe, sizeof ( *cqe ) ); |
| } |
| |
| /* Return ownership to hardware */ |
| MLX_FILL_1 ( &cqe->normal, 7, owner, 1 ); |
| barrier(); |
| /* Update completion queue's index */ |
| cq->next_idx++; |
| /* Update doorbell record */ |
| ci_db_rec = &arbel->db_rec[arbel_cq->ci_doorbell_idx].cq_ci; |
| MLX_FILL_1 ( ci_db_rec, 0, |
| counter, ( cq->next_idx & 0xffffffffUL ) ); |
| } |
| } |
| |
| /*************************************************************************** |
| * |
| * Event queues |
| * |
| *************************************************************************** |
| */ |
| |
| /** |
| * Create event queue |
| * |
| * @v arbel Arbel device |
| * @ret rc Return status code |
| */ |
| static int arbel_create_eq ( struct arbel *arbel ) { |
| struct arbel_event_queue *arbel_eq = &arbel->eq; |
| struct arbelprm_eqc eqctx; |
| struct arbelprm_event_mask mask; |
| unsigned int i; |
| int rc; |
| |
| /* Select event queue number */ |
| arbel_eq->eqn = arbel->limits.reserved_eqs; |
| |
| /* Calculate doorbell address */ |
| arbel_eq->doorbell = ( arbel->eq_ci_doorbells + |
| ARBEL_DB_EQ_OFFSET ( arbel_eq->eqn ) ); |
| |
| /* Allocate event queue itself */ |
| arbel_eq->eqe_size = |
| ( ARBEL_NUM_EQES * sizeof ( arbel_eq->eqe[0] ) ); |
| arbel_eq->eqe = malloc_dma ( arbel_eq->eqe_size, |
| sizeof ( arbel_eq->eqe[0] ) ); |
| if ( ! arbel_eq->eqe ) { |
| rc = -ENOMEM; |
| goto err_eqe; |
| } |
| memset ( arbel_eq->eqe, 0, arbel_eq->eqe_size ); |
| for ( i = 0 ; i < ARBEL_NUM_EQES ; i++ ) { |
| MLX_FILL_1 ( &arbel_eq->eqe[i].generic, 7, owner, 1 ); |
| } |
| barrier(); |
| |
| /* Hand queue over to hardware */ |
| memset ( &eqctx, 0, sizeof ( eqctx ) ); |
| MLX_FILL_1 ( &eqctx, 0, st, 0xa /* "Fired" */ ); |
| MLX_FILL_1 ( &eqctx, 2, |
| start_address_l, virt_to_phys ( arbel_eq->eqe ) ); |
| MLX_FILL_1 ( &eqctx, 3, log_eq_size, fls ( ARBEL_NUM_EQES - 1 ) ); |
| MLX_FILL_1 ( &eqctx, 6, pd, ARBEL_GLOBAL_PD ); |
| MLX_FILL_1 ( &eqctx, 7, lkey, arbel->reserved_lkey ); |
| if ( ( rc = arbel_cmd_sw2hw_eq ( arbel, arbel_eq->eqn, |
| &eqctx ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p SW2HW_EQ failed: %s\n", |
| arbel, strerror ( rc ) ); |
| goto err_sw2hw_eq; |
| } |
| |
| /* Map events to this event queue */ |
| memset ( &mask, 0, sizeof ( mask ) ); |
| MLX_FILL_1 ( &mask, 1, port_state_change, 1 ); |
| if ( ( rc = arbel_cmd_map_eq ( arbel, |
| ( ARBEL_MAP_EQ | arbel_eq->eqn ), |
| &mask ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p MAP_EQ failed: %s\n", |
| arbel, strerror ( rc ) ); |
| goto err_map_eq; |
| } |
| |
| DBGC ( arbel, "Arbel %p EQN %#lx ring at [%p,%p])\n", |
| arbel, arbel_eq->eqn, arbel_eq->eqe, |
| ( ( ( void * ) arbel_eq->eqe ) + arbel_eq->eqe_size ) ); |
| return 0; |
| |
| err_map_eq: |
| arbel_cmd_hw2sw_eq ( arbel, arbel_eq->eqn, &eqctx ); |
| err_sw2hw_eq: |
| free_dma ( arbel_eq->eqe, arbel_eq->eqe_size ); |
| err_eqe: |
| memset ( arbel_eq, 0, sizeof ( *arbel_eq ) ); |
| return rc; |
| } |
| |
| /** |
| * Destroy event queue |
| * |
| * @v arbel Arbel device |
| */ |
| static void arbel_destroy_eq ( struct arbel *arbel ) { |
| struct arbel_event_queue *arbel_eq = &arbel->eq; |
| struct arbelprm_eqc eqctx; |
| struct arbelprm_event_mask mask; |
| int rc; |
| |
| /* Unmap events from event queue */ |
| memset ( &mask, 0, sizeof ( mask ) ); |
| MLX_FILL_1 ( &mask, 1, port_state_change, 1 ); |
| if ( ( rc = arbel_cmd_map_eq ( arbel, |
| ( ARBEL_UNMAP_EQ | arbel_eq->eqn ), |
| &mask ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p FATAL MAP_EQ failed to unmap: %s\n", |
| arbel, strerror ( rc ) ); |
| /* Continue; HCA may die but system should survive */ |
| } |
| |
| /* Take ownership back from hardware */ |
| if ( ( rc = arbel_cmd_hw2sw_eq ( arbel, arbel_eq->eqn, |
| &eqctx ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p FATAL HW2SW_EQ failed: %s\n", |
| arbel, strerror ( rc ) ); |
| /* Leak memory and return; at least we avoid corruption */ |
| return; |
| } |
| |
| /* Free memory */ |
| free_dma ( arbel_eq->eqe, arbel_eq->eqe_size ); |
| memset ( arbel_eq, 0, sizeof ( *arbel_eq ) ); |
| } |
| |
| /** |
| * Handle port state event |
| * |
| * @v arbel Arbel device |
| * @v eqe Port state change event queue entry |
| */ |
| static void arbel_event_port_state_change ( struct arbel *arbel, |
| union arbelprm_event_entry *eqe){ |
| unsigned int port; |
| int link_up; |
| |
| /* Get port and link status */ |
| port = ( MLX_GET ( &eqe->port_state_change, data.p ) - 1 ); |
| link_up = ( MLX_GET ( &eqe->generic, event_sub_type ) & 0x04 ); |
| DBGC ( arbel, "Arbel %p port %d link %s\n", arbel, ( port + 1 ), |
| ( link_up ? "up" : "down" ) ); |
| |
| /* Sanity check */ |
| if ( port >= ARBEL_NUM_PORTS ) { |
| DBGC ( arbel, "Arbel %p port %d does not exist!\n", |
| arbel, ( port + 1 ) ); |
| return; |
| } |
| |
| /* Update MAD parameters */ |
| ib_smc_update ( arbel->ibdev[port], arbel_mad ); |
| |
| /* Notify Infiniband core of link state change */ |
| ib_link_state_changed ( arbel->ibdev[port] ); |
| } |
| |
| /** |
| * Poll event queue |
| * |
| * @v ibdev Infiniband device |
| */ |
| static void arbel_poll_eq ( struct ib_device *ibdev ) { |
| struct arbel *arbel = ib_get_drvdata ( ibdev ); |
| struct arbel_event_queue *arbel_eq = &arbel->eq; |
| union arbelprm_event_entry *eqe; |
| union arbelprm_eq_doorbell_register db_reg; |
| unsigned int eqe_idx_mask; |
| unsigned int event_type; |
| |
| while ( 1 ) { |
| /* Look for event entry */ |
| eqe_idx_mask = ( ARBEL_NUM_EQES - 1 ); |
| eqe = &arbel_eq->eqe[arbel_eq->next_idx & eqe_idx_mask]; |
| if ( MLX_GET ( &eqe->generic, owner ) != 0 ) { |
| /* Entry still owned by hardware; end of poll */ |
| break; |
| } |
| DBGCP ( arbel, "Arbel %p event:\n", arbel ); |
| DBGCP_HD ( arbel, eqe, sizeof ( *eqe ) ); |
| |
| /* Handle event */ |
| event_type = MLX_GET ( &eqe->generic, event_type ); |
| switch ( event_type ) { |
| case ARBEL_EV_PORT_STATE_CHANGE: |
| arbel_event_port_state_change ( arbel, eqe ); |
| break; |
| default: |
| DBGC ( arbel, "Arbel %p unrecognised event type " |
| "%#x:\n", arbel, event_type ); |
| DBGC_HD ( arbel, eqe, sizeof ( *eqe ) ); |
| break; |
| } |
| |
| /* Return ownership to hardware */ |
| MLX_FILL_1 ( &eqe->generic, 7, owner, 1 ); |
| barrier(); |
| |
| /* Update event queue's index */ |
| arbel_eq->next_idx++; |
| |
| /* Ring doorbell */ |
| MLX_FILL_1 ( &db_reg.ci, 0, ci, arbel_eq->next_idx ); |
| DBGCP ( arbel, "Ringing doorbell %08lx with %08x\n", |
| virt_to_phys ( arbel_eq->doorbell ), |
| db_reg.dword[0] ); |
| writel ( db_reg.dword[0], arbel_eq->doorbell ); |
| } |
| } |
| |
| /*************************************************************************** |
| * |
| * Infiniband link-layer operations |
| * |
| *************************************************************************** |
| */ |
| |
| /** |
| * Initialise Infiniband link |
| * |
| * @v ibdev Infiniband device |
| * @ret rc Return status code |
| */ |
| static int arbel_open ( struct ib_device *ibdev ) { |
| struct arbel *arbel = ib_get_drvdata ( ibdev ); |
| struct arbelprm_init_ib init_ib; |
| int rc; |
| |
| memset ( &init_ib, 0, sizeof ( init_ib ) ); |
| MLX_FILL_3 ( &init_ib, 0, |
| mtu_cap, ARBEL_MTU_2048, |
| port_width_cap, 3, |
| vl_cap, 1 ); |
| MLX_FILL_1 ( &init_ib, 1, max_gid, 1 ); |
| MLX_FILL_1 ( &init_ib, 2, max_pkey, 64 ); |
| if ( ( rc = arbel_cmd_init_ib ( arbel, ibdev->port, |
| &init_ib ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p could not intialise IB: %s\n", |
| arbel, strerror ( rc ) ); |
| return rc; |
| } |
| |
| /* Update MAD parameters */ |
| ib_smc_update ( ibdev, arbel_mad ); |
| |
| return 0; |
| } |
| |
| /** |
| * Close Infiniband link |
| * |
| * @v ibdev Infiniband device |
| */ |
| static void arbel_close ( struct ib_device *ibdev ) { |
| struct arbel *arbel = ib_get_drvdata ( ibdev ); |
| int rc; |
| |
| if ( ( rc = arbel_cmd_close_ib ( arbel, ibdev->port ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p could not close IB: %s\n", |
| arbel, strerror ( rc ) ); |
| /* Nothing we can do about this */ |
| } |
| } |
| |
| /*************************************************************************** |
| * |
| * 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 = ib_get_drvdata ( ibdev ); |
| 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 = ib_get_drvdata ( ibdev ); |
| 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, |
| .destroy_cq = arbel_destroy_cq, |
| .create_qp = arbel_create_qp, |
| .modify_qp = arbel_modify_qp, |
| .destroy_qp = arbel_destroy_qp, |
| .post_send = arbel_post_send, |
| .post_recv = arbel_post_recv, |
| .poll_cq = arbel_poll_cq, |
| .poll_eq = arbel_poll_eq, |
| .open = arbel_open, |
| .close = arbel_close, |
| .mcast_attach = arbel_mcast_attach, |
| .mcast_detach = arbel_mcast_detach, |
| }; |
| |
| /*************************************************************************** |
| * |
| * Firmware control |
| * |
| *************************************************************************** |
| */ |
| |
| /** |
| * Start firmware running |
| * |
| * @v arbel Arbel device |
| * @ret rc Return status code |
| */ |
| static int arbel_start_firmware ( struct arbel *arbel ) { |
| struct arbelprm_query_fw fw; |
| struct arbelprm_access_lam lam; |
| struct arbelprm_virtual_physical_mapping map_fa; |
| unsigned int fw_pages; |
| unsigned int log2_fw_pages; |
| size_t fw_size; |
| physaddr_t fw_base; |
| uint64_t eq_set_ci_base_addr; |
| int rc; |
| |
| /* Get firmware parameters */ |
| if ( ( rc = arbel_cmd_query_fw ( arbel, &fw ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p could not query firmware: %s\n", |
| arbel, strerror ( rc ) ); |
| goto err_query_fw; |
| } |
| DBGC ( arbel, "Arbel %p firmware version %d.%d.%d\n", arbel, |
| MLX_GET ( &fw, fw_rev_major ), MLX_GET ( &fw, fw_rev_minor ), |
| MLX_GET ( &fw, fw_rev_subminor ) ); |
| fw_pages = MLX_GET ( &fw, fw_pages ); |
| log2_fw_pages = fls ( fw_pages - 1 ); |
| fw_pages = ( 1 << log2_fw_pages ); |
| DBGC ( arbel, "Arbel %p requires %d kB for firmware\n", |
| arbel, ( fw_pages * 4 ) ); |
| eq_set_ci_base_addr = |
| ( ( (uint64_t) MLX_GET ( &fw, eq_set_ci_base_addr_h ) << 32 ) | |
| ( (uint64_t) MLX_GET ( &fw, eq_set_ci_base_addr_l ) ) ); |
| arbel->eq_ci_doorbells = ioremap ( eq_set_ci_base_addr, 0x200 ); |
| |
| /* Enable locally-attached memory. Ignore failure; there may |
| * be no attached memory. |
| */ |
| arbel_cmd_enable_lam ( arbel, &lam ); |
| |
| /* Allocate firmware pages and map firmware area */ |
| fw_size = ( fw_pages * 4096 ); |
| arbel->firmware_area = umalloc ( fw_size * 2 ); |
| if ( ! arbel->firmware_area ) { |
| rc = -ENOMEM; |
| goto err_alloc_fa; |
| } |
| fw_base = ( user_to_phys ( arbel->firmware_area, fw_size ) & |
| ~( fw_size - 1 ) ); |
| DBGC ( arbel, "Arbel %p firmware area at physical [%lx,%lx)\n", |
| arbel, fw_base, ( fw_base + fw_size ) ); |
| memset ( &map_fa, 0, sizeof ( map_fa ) ); |
| MLX_FILL_2 ( &map_fa, 3, |
| log2size, log2_fw_pages, |
| pa_l, ( fw_base >> 12 ) ); |
| if ( ( rc = arbel_cmd_map_fa ( arbel, &map_fa ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p could not map firmware: %s\n", |
| arbel, strerror ( rc ) ); |
| goto err_map_fa; |
| } |
| |
| /* Start firmware */ |
| if ( ( rc = arbel_cmd_run_fw ( arbel ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p could not run firmware: %s\n", |
| arbel, strerror ( rc ) ); |
| goto err_run_fw; |
| } |
| |
| DBGC ( arbel, "Arbel %p firmware started\n", arbel ); |
| return 0; |
| |
| err_run_fw: |
| arbel_cmd_unmap_fa ( arbel ); |
| err_map_fa: |
| ufree ( arbel->firmware_area ); |
| arbel->firmware_area = UNULL; |
| err_alloc_fa: |
| err_query_fw: |
| return rc; |
| } |
| |
| /** |
| * Stop firmware running |
| * |
| * @v arbel Arbel device |
| */ |
| static void arbel_stop_firmware ( struct arbel *arbel ) { |
| int rc; |
| |
| if ( ( rc = arbel_cmd_unmap_fa ( arbel ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p FATAL could not stop firmware: %s\n", |
| arbel, strerror ( rc ) ); |
| /* Leak memory and return; at least we avoid corruption */ |
| return; |
| } |
| ufree ( arbel->firmware_area ); |
| arbel->firmware_area = UNULL; |
| } |
| |
| /*************************************************************************** |
| * |
| * Infinihost Context Memory management |
| * |
| *************************************************************************** |
| */ |
| |
| /** |
| * Get device limits |
| * |
| * @v arbel Arbel device |
| * @ret rc Return status code |
| */ |
| static int arbel_get_limits ( struct arbel *arbel ) { |
| struct arbelprm_query_dev_lim dev_lim; |
| int rc; |
| |
| if ( ( rc = arbel_cmd_query_dev_lim ( arbel, &dev_lim ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p could not get device limits: %s\n", |
| arbel, strerror ( rc ) ); |
| return rc; |
| } |
| |
| arbel->limits.reserved_qps = |
| ( 1 << MLX_GET ( &dev_lim, log2_rsvd_qps ) ); |
| arbel->limits.qpc_entry_size = MLX_GET ( &dev_lim, qpc_entry_sz ); |
| arbel->limits.eqpc_entry_size = MLX_GET ( &dev_lim, eqpc_entry_sz ); |
| arbel->limits.reserved_srqs = |
| ( 1 << MLX_GET ( &dev_lim, log2_rsvd_srqs ) ); |
| arbel->limits.srqc_entry_size = MLX_GET ( &dev_lim, srq_entry_sz ); |
| arbel->limits.reserved_ees = |
| ( 1 << MLX_GET ( &dev_lim, log2_rsvd_ees ) ); |
| arbel->limits.eec_entry_size = MLX_GET ( &dev_lim, eec_entry_sz ); |
| arbel->limits.eeec_entry_size = MLX_GET ( &dev_lim, eeec_entry_sz ); |
| arbel->limits.reserved_cqs = |
| ( 1 << MLX_GET ( &dev_lim, log2_rsvd_cqs ) ); |
| arbel->limits.cqc_entry_size = MLX_GET ( &dev_lim, cqc_entry_sz ); |
| arbel->limits.reserved_eqs = MLX_GET ( &dev_lim, num_rsvd_eqs ); |
| arbel->limits.reserved_mtts = |
| ( 1 << MLX_GET ( &dev_lim, log2_rsvd_mtts ) ); |
| arbel->limits.mtt_entry_size = MLX_GET ( &dev_lim, mtt_entry_sz ); |
| arbel->limits.reserved_mrws = |
| ( 1 << MLX_GET ( &dev_lim, log2_rsvd_mrws ) ); |
| arbel->limits.mpt_entry_size = MLX_GET ( &dev_lim, mpt_entry_sz ); |
| arbel->limits.reserved_rdbs = |
| ( 1 << MLX_GET ( &dev_lim, log2_rsvd_rdbs ) ); |
| arbel->limits.eqc_entry_size = MLX_GET ( &dev_lim, eqc_entry_sz ); |
| arbel->limits.reserved_uars = MLX_GET ( &dev_lim, num_rsvd_uars ); |
| |
| return 0; |
| } |
| |
| /** |
| * Get ICM usage |
| * |
| * @v log_num_entries Log2 of the number of entries |
| * @v entry_size Entry size |
| * @ret usage Usage size in ICM |
| */ |
| static size_t icm_usage ( unsigned int log_num_entries, size_t entry_size ) { |
| size_t usage; |
| |
| usage = ( ( 1 << log_num_entries ) * entry_size ); |
| usage = ( ( usage + 4095 ) & ~4095 ); |
| return usage; |
| } |
| |
| /** |
| * Allocate ICM |
| * |
| * @v arbel Arbel device |
| * @v init_hca INIT_HCA structure to fill in |
| * @ret rc Return status code |
| */ |
| static int arbel_alloc_icm ( struct arbel *arbel, |
| struct arbelprm_init_hca *init_hca ) { |
| struct arbelprm_scalar_parameter icm_size; |
| struct arbelprm_scalar_parameter icm_aux_size; |
| struct arbelprm_virtual_physical_mapping map_icm_aux; |
| struct arbelprm_virtual_physical_mapping map_icm; |
| union arbelprm_doorbell_record *db_rec; |
| size_t icm_offset = 0; |
| unsigned int log_num_qps, log_num_srqs, log_num_ees, log_num_cqs; |
| unsigned int log_num_mtts, log_num_mpts, log_num_rdbs, log_num_eqs; |
| int rc; |
| |
| icm_offset = ( ( arbel->limits.reserved_uars + 1 ) << 12 ); |
| |
| /* Queue pair contexts */ |
| log_num_qps = fls ( arbel->limits.reserved_qps + ARBEL_MAX_QPS - 1 ); |
| MLX_FILL_2 ( init_hca, 13, |
| qpc_eec_cqc_eqc_rdb_parameters.qpc_base_addr_l, |
| ( icm_offset >> 7 ), |
| qpc_eec_cqc_eqc_rdb_parameters.log_num_of_qp, |
| log_num_qps ); |
| DBGC ( arbel, "Arbel %p ICM QPC base = %zx\n", arbel, icm_offset ); |
| icm_offset += icm_usage ( log_num_qps, arbel->limits.qpc_entry_size ); |
| |
| /* Extended queue pair contexts */ |
| MLX_FILL_1 ( init_hca, 25, |
| qpc_eec_cqc_eqc_rdb_parameters.eqpc_base_addr_l, |
| icm_offset ); |
| DBGC ( arbel, "Arbel %p ICM EQPC base = %zx\n", arbel, icm_offset ); |
| // icm_offset += icm_usage ( log_num_qps, arbel->limits.eqpc_entry_size ); |
| icm_offset += icm_usage ( log_num_qps, arbel->limits.qpc_entry_size ); |
| |
| /* Shared receive queue contexts */ |
| log_num_srqs = fls ( arbel->limits.reserved_srqs - 1 ); |
| MLX_FILL_2 ( init_hca, 19, |
| qpc_eec_cqc_eqc_rdb_parameters.srqc_base_addr_l, |
| ( icm_offset >> 5 ), |
| qpc_eec_cqc_eqc_rdb_parameters.log_num_of_srq, |
| log_num_srqs ); |
| DBGC ( arbel, "Arbel %p ICM SRQC base = %zx\n", arbel, icm_offset ); |
| icm_offset += icm_usage ( log_num_srqs, arbel->limits.srqc_entry_size ); |
| |
| /* End-to-end contexts */ |
| log_num_ees = fls ( arbel->limits.reserved_ees - 1 ); |
| MLX_FILL_2 ( init_hca, 17, |
| qpc_eec_cqc_eqc_rdb_parameters.eec_base_addr_l, |
| ( icm_offset >> 7 ), |
| qpc_eec_cqc_eqc_rdb_parameters.log_num_of_ee, |
| log_num_ees ); |
| DBGC ( arbel, "Arbel %p ICM EEC base = %zx\n", arbel, icm_offset ); |
| icm_offset += icm_usage ( log_num_ees, arbel->limits.eec_entry_size ); |
| |
| /* Extended end-to-end contexts */ |
| MLX_FILL_1 ( init_hca, 29, |
| qpc_eec_cqc_eqc_rdb_parameters.eeec_base_addr_l, |
| icm_offset ); |
| DBGC ( arbel, "Arbel %p ICM EEEC base = %zx\n", arbel, icm_offset ); |
| icm_offset += icm_usage ( log_num_ees, arbel->limits.eeec_entry_size ); |
| |
| /* Completion queue contexts */ |
| log_num_cqs = fls ( arbel->limits.reserved_cqs + ARBEL_MAX_CQS - 1 ); |
| MLX_FILL_2 ( init_hca, 21, |
| qpc_eec_cqc_eqc_rdb_parameters.cqc_base_addr_l, |
| ( icm_offset >> 6 ), |
| qpc_eec_cqc_eqc_rdb_parameters.log_num_of_cq, |
| log_num_cqs ); |
| DBGC ( arbel, "Arbel %p ICM CQC base = %zx\n", arbel, icm_offset ); |
| icm_offset += icm_usage ( log_num_cqs, arbel->limits.cqc_entry_size ); |
| |
| /* Memory translation table */ |
| log_num_mtts = fls ( arbel->limits.reserved_mtts - 1 ); |
| MLX_FILL_1 ( init_hca, 65, |
| tpt_parameters.mtt_base_addr_l, icm_offset ); |
| DBGC ( arbel, "Arbel %p ICM MTT base = %zx\n", arbel, icm_offset ); |
| icm_offset += icm_usage ( log_num_mtts, arbel->limits.mtt_entry_size ); |
| |
| /* Memory protection table */ |
| log_num_mpts = fls ( arbel->limits.reserved_mrws + 1 - 1 ); |
| MLX_FILL_1 ( init_hca, 61, |
| tpt_parameters.mpt_base_adr_l, icm_offset ); |
| MLX_FILL_1 ( init_hca, 62, |
| tpt_parameters.log_mpt_sz, log_num_mpts ); |
| DBGC ( arbel, "Arbel %p ICM MTT base = %zx\n", arbel, icm_offset ); |
| icm_offset += icm_usage ( log_num_mpts, arbel->limits.mpt_entry_size ); |
| |
| /* RDMA something or other */ |
| log_num_rdbs = fls ( arbel->limits.reserved_rdbs - 1 ); |
| MLX_FILL_1 ( init_hca, 37, |
| qpc_eec_cqc_eqc_rdb_parameters.rdb_base_addr_l, |
| icm_offset ); |
| DBGC ( arbel, "Arbel %p ICM RDB base = %zx\n", arbel, icm_offset ); |
| icm_offset += icm_usage ( log_num_rdbs, 32 ); |
| |
| /* Event queue contexts */ |
| log_num_eqs = fls ( arbel->limits.reserved_eqs + ARBEL_MAX_EQS - 1 ); |
| MLX_FILL_2 ( init_hca, 33, |
| qpc_eec_cqc_eqc_rdb_parameters.eqc_base_addr_l, |
| ( icm_offset >> 6 ), |
| qpc_eec_cqc_eqc_rdb_parameters.log_num_eq, |
| log_num_eqs ); |
| DBGC ( arbel, "Arbel %p ICM EQ base = %zx\n", arbel, icm_offset ); |
| icm_offset += ( ( 1 << log_num_eqs ) * arbel->limits.eqc_entry_size ); |
| |
| /* Multicast table */ |
| MLX_FILL_1 ( init_hca, 49, |
| multicast_parameters.mc_base_addr_l, icm_offset ); |
| MLX_FILL_1 ( init_hca, 52, |
| multicast_parameters.log_mc_table_entry_sz, |
| fls ( sizeof ( struct arbelprm_mgm_entry ) - 1 ) ); |
| MLX_FILL_1 ( init_hca, 53, |
| multicast_parameters.mc_table_hash_sz, 8 ); |
| MLX_FILL_1 ( init_hca, 54, |
| multicast_parameters.log_mc_table_sz, 3 ); |
| DBGC ( arbel, "Arbel %p ICM MC base = %zx\n", arbel, icm_offset ); |
| icm_offset += ( 8 * sizeof ( struct arbelprm_mgm_entry ) ); |
| |
| arbel->icm_len = icm_offset; |
| arbel->icm_len = ( ( arbel->icm_len + 4095 ) & ~4095 ); |
| |
| /* Get ICM auxiliary area size */ |
| memset ( &icm_size, 0, sizeof ( icm_size ) ); |
| MLX_FILL_1 ( &icm_size, 1, value, arbel->icm_len ); |
| if ( ( rc = arbel_cmd_set_icm_size ( arbel, &icm_size, |
| &icm_aux_size ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p could not set ICM size: %s\n", |
| arbel, strerror ( rc ) ); |
| goto err_set_icm_size; |
| } |
| arbel->icm_aux_len = ( MLX_GET ( &icm_aux_size, value ) * 4096 ); |
| |
| /* Allocate ICM data and auxiliary area */ |
| DBGC ( arbel, "Arbel %p requires %zd kB ICM and %zd kB AUX ICM\n", |
| arbel, ( arbel->icm_len / 1024 ), |
| ( arbel->icm_aux_len / 1024 ) ); |
| arbel->icm = umalloc ( arbel->icm_len + arbel->icm_aux_len ); |
| if ( ! arbel->icm ) { |
| rc = -ENOMEM; |
| goto err_alloc; |
| } |
| |
| /* Map ICM auxiliary area */ |
| memset ( &map_icm_aux, 0, sizeof ( map_icm_aux ) ); |
| MLX_FILL_2 ( &map_icm_aux, 3, |
| log2size, fls ( ( arbel->icm_aux_len / 4096 ) - 1 ), |
| pa_l, |
| ( user_to_phys ( arbel->icm, arbel->icm_len ) >> 12 ) ); |
| if ( ( rc = arbel_cmd_map_icm_aux ( arbel, &map_icm_aux ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p could not map AUX ICM: %s\n", |
| arbel, strerror ( rc ) ); |
| goto err_map_icm_aux; |
| } |
| |
| /* MAP ICM area */ |
| memset ( &map_icm, 0, sizeof ( map_icm ) ); |
| MLX_FILL_2 ( &map_icm, 3, |
| log2size, fls ( ( arbel->icm_len / 4096 ) - 1 ), |
| pa_l, ( user_to_phys ( arbel->icm, 0 ) >> 12 ) ); |
| if ( ( rc = arbel_cmd_map_icm ( arbel, &map_icm ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p could not map ICM: %s\n", |
| arbel, strerror ( rc ) ); |
| goto err_map_icm; |
| } |
| |
| /* Initialise UAR context */ |
| arbel->db_rec = phys_to_virt ( user_to_phys ( arbel->icm, 0 ) + |
| ( arbel->limits.reserved_uars * |
| ARBEL_PAGE_SIZE ) ); |
| memset ( arbel->db_rec, 0, ARBEL_PAGE_SIZE ); |
| db_rec = &arbel->db_rec[ARBEL_GROUP_SEPARATOR_DOORBELL]; |
| MLX_FILL_1 ( &db_rec->qp, 1, res, ARBEL_UAR_RES_GROUP_SEP ); |
| |
| return 0; |
| |
| arbel_cmd_unmap_icm ( arbel, ( arbel->icm_len / 4096 ) ); |
| err_map_icm: |
| arbel_cmd_unmap_icm_aux ( arbel ); |
| err_map_icm_aux: |
| ufree ( arbel->icm ); |
| arbel->icm = UNULL; |
| err_alloc: |
| err_set_icm_size: |
| return rc; |
| } |
| |
| /** |
| * Free ICM |
| * |
| * @v arbel Arbel device |
| */ |
| static void arbel_free_icm ( struct arbel *arbel ) { |
| arbel_cmd_unmap_icm ( arbel, ( arbel->icm_len / 4096 ) ); |
| arbel_cmd_unmap_icm_aux ( arbel ); |
| ufree ( arbel->icm ); |
| arbel->icm = UNULL; |
| } |
| |
| /*************************************************************************** |
| * |
| * PCI interface |
| * |
| *************************************************************************** |
| */ |
| |
| /** |
| * Set up memory protection table |
| * |
| * @v arbel Arbel device |
| * @ret rc Return status code |
| */ |
| static int arbel_setup_mpt ( struct arbel *arbel ) { |
| struct arbelprm_mpt mpt; |
| uint32_t key; |
| int rc; |
| |
| /* Derive key */ |
| key = ( arbel->limits.reserved_mrws | ARBEL_MKEY_PREFIX ); |
| arbel->reserved_lkey = ( ( key << 8 ) | ( key >> 24 ) ); |
| |
| /* Initialise memory protection table */ |
| memset ( &mpt, 0, sizeof ( mpt ) ); |
| MLX_FILL_4 ( &mpt, 0, |
| r_w, 1, |
| pa, 1, |
| lr, 1, |
| lw, 1 ); |
| MLX_FILL_1 ( &mpt, 2, mem_key, key ); |
| MLX_FILL_1 ( &mpt, 3, pd, ARBEL_GLOBAL_PD ); |
| MLX_FILL_1 ( &mpt, 6, reg_wnd_len_h, 0xffffffffUL ); |
| MLX_FILL_1 ( &mpt, 7, reg_wnd_len_l, 0xffffffffUL ); |
| if ( ( rc = arbel_cmd_sw2hw_mpt ( arbel, arbel->limits.reserved_mrws, |
| &mpt ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p could not set up MPT: %s\n", |
| arbel, strerror ( rc ) ); |
| return rc; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * Probe PCI device |
| * |
| * @v pci PCI device |
| * @v id PCI ID |
| * @ret rc Return status code |
| */ |
| static int arbel_probe ( struct pci_device *pci, |
| const struct pci_device_id *id __unused ) { |
| struct arbel *arbel; |
| struct ib_device *ibdev; |
| struct arbelprm_init_hca init_hca; |
| int i; |
| int rc; |
| |
| /* Allocate Arbel device */ |
| arbel = zalloc ( sizeof ( *arbel ) ); |
| if ( ! arbel ) { |
| rc = -ENOMEM; |
| goto err_alloc_arbel; |
| } |
| pci_set_drvdata ( pci, arbel ); |
| |
| /* Allocate Infiniband devices */ |
| for ( i = 0 ; i < ARBEL_NUM_PORTS ; i++ ) { |
| ibdev = alloc_ibdev ( 0 ); |
| if ( ! ibdev ) { |
| rc = -ENOMEM; |
| goto err_alloc_ibdev; |
| } |
| arbel->ibdev[i] = ibdev; |
| ibdev->op = &arbel_ib_operations; |
| ibdev->dev = &pci->dev; |
| ibdev->port = ( ARBEL_PORT_BASE + i ); |
| ib_set_drvdata ( ibdev, arbel ); |
| } |
| |
| /* Fix up PCI device */ |
| adjust_pci_device ( pci ); |
| |
| /* Get PCI BARs */ |
| arbel->config = ioremap ( pci_bar_start ( pci, ARBEL_PCI_CONFIG_BAR ), |
| ARBEL_PCI_CONFIG_BAR_SIZE ); |
| arbel->uar = ioremap ( ( pci_bar_start ( pci, ARBEL_PCI_UAR_BAR ) + |
| ARBEL_PCI_UAR_IDX * ARBEL_PCI_UAR_SIZE ), |
| ARBEL_PCI_UAR_SIZE ); |
| |
| /* Allocate space for mailboxes */ |
| arbel->mailbox_in = malloc_dma ( ARBEL_MBOX_SIZE, ARBEL_MBOX_ALIGN ); |
| if ( ! arbel->mailbox_in ) { |
| rc = -ENOMEM; |
| goto err_mailbox_in; |
| } |
| arbel->mailbox_out = malloc_dma ( ARBEL_MBOX_SIZE, ARBEL_MBOX_ALIGN ); |
| if ( ! arbel->mailbox_out ) { |
| rc = -ENOMEM; |
| goto err_mailbox_out; |
| } |
| |
| /* Start firmware */ |
| if ( ( rc = arbel_start_firmware ( arbel ) ) != 0 ) |
| goto err_start_firmware; |
| |
| /* Get device limits */ |
| if ( ( rc = arbel_get_limits ( arbel ) ) != 0 ) |
| goto err_get_limits; |
| |
| /* Allocate ICM */ |
| memset ( &init_hca, 0, sizeof ( init_hca ) ); |
| if ( ( rc = arbel_alloc_icm ( arbel, &init_hca ) ) != 0 ) |
| goto err_alloc_icm; |
| |
| /* Initialise HCA */ |
| MLX_FILL_1 ( &init_hca, 74, uar_parameters.log_max_uars, 1 ); |
| if ( ( rc = arbel_cmd_init_hca ( arbel, &init_hca ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p could not initialise HCA: %s\n", |
| arbel, strerror ( rc ) ); |
| goto err_init_hca; |
| } |
| |
| /* Set up memory protection */ |
| if ( ( rc = arbel_setup_mpt ( arbel ) ) != 0 ) |
| goto err_setup_mpt; |
| |
| /* Set up event queue */ |
| if ( ( rc = arbel_create_eq ( arbel ) ) != 0 ) |
| goto err_create_eq; |
| |
| /* Update MAD parameters */ |
| for ( i = 0 ; i < ARBEL_NUM_PORTS ; i++ ) |
| ib_smc_update ( arbel->ibdev[i], arbel_mad ); |
| |
| /* Register Infiniband devices */ |
| for ( i = 0 ; i < ARBEL_NUM_PORTS ; i++ ) { |
| if ( ( rc = register_ibdev ( arbel->ibdev[i] ) ) != 0 ) { |
| DBGC ( arbel, "Arbel %p could not register IB " |
| "device: %s\n", arbel, strerror ( rc ) ); |
| goto err_register_ibdev; |
| } |
| } |
| |
| return 0; |
| |
| i = ARBEL_NUM_PORTS; |
| err_register_ibdev: |
| for ( i-- ; i >= 0 ; i-- ) |
| unregister_ibdev ( arbel->ibdev[i] ); |
| arbel_destroy_eq ( arbel ); |
| err_create_eq: |
| err_setup_mpt: |
| arbel_cmd_close_hca ( arbel ); |
| err_init_hca: |
| arbel_free_icm ( arbel ); |
| err_alloc_icm: |
| err_get_limits: |
| arbel_stop_firmware ( arbel ); |
| err_start_firmware: |
| free_dma ( arbel->mailbox_out, ARBEL_MBOX_SIZE ); |
| err_mailbox_out: |
| free_dma ( arbel->mailbox_in, ARBEL_MBOX_SIZE ); |
| err_mailbox_in: |
| i = ARBEL_NUM_PORTS; |
| err_alloc_ibdev: |
| for ( i-- ; i >= 0 ; i-- ) |
| ibdev_put ( arbel->ibdev[i] ); |
| free ( arbel ); |
| err_alloc_arbel: |
| return rc; |
| } |
| |
| /** |
| * Remove PCI device |
| * |
| * @v pci PCI device |
| */ |
| static void arbel_remove ( struct pci_device *pci ) { |
| struct arbel *arbel = pci_get_drvdata ( pci ); |
| int i; |
| |
| for ( i = ( ARBEL_NUM_PORTS - 1 ) ; i >= 0 ; i-- ) |
| unregister_ibdev ( arbel->ibdev[i] ); |
| arbel_destroy_eq ( arbel ); |
| arbel_cmd_close_hca ( arbel ); |
| arbel_free_icm ( arbel ); |
| arbel_stop_firmware ( arbel ); |
| arbel_stop_firmware ( arbel ); |
| free_dma ( arbel->mailbox_out, ARBEL_MBOX_SIZE ); |
| free_dma ( arbel->mailbox_in, ARBEL_MBOX_SIZE ); |
| for ( i = ( ARBEL_NUM_PORTS - 1 ) ; i >= 0 ; i-- ) |
| ibdev_put ( arbel->ibdev[i] ); |
| free ( arbel ); |
| } |
| |
| static struct pci_device_id arbel_nics[] = { |
| PCI_ROM ( 0x15b3, 0x6282, "mt25218", "MT25218 HCA driver", 0 ), |
| PCI_ROM ( 0x15b3, 0x6274, "mt25204", "MT25204 HCA driver", 0 ), |
| }; |
| |
| struct pci_driver arbel_driver __pci_driver = { |
| .ids = arbel_nics, |
| .id_count = ( sizeof ( arbel_nics ) / sizeof ( arbel_nics[0] ) ), |
| .probe = arbel_probe, |
| .remove = arbel_remove, |
| }; |