2169 lines
64 KiB
C
2169 lines
64 KiB
C
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/*
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* Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* Based in part upon the original driver by Mellanox Technologies
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* Ltd. Portions may be Copyright (c) Mellanox Technologies Ltd.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <strings.h>
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#include <unistd.h>
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#include <errno.h>
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#include <timer.h>
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#include <byteswap.h>
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#include <gpxe/pci.h>
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#include <gpxe/malloc.h>
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#include <gpxe/umalloc.h>
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#include <gpxe/iobuf.h>
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#include <gpxe/netdevice.h>
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#include <gpxe/infiniband.h>
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#include <gpxe/ipoib.h>
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#include "hermon.h"
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/**
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* @file
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*
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* Mellanox Hermon Infiniband HCA
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*
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*/
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/* Port to use */
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#define PXE_IB_PORT 1
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/***************************************************************************
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*
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* Queue number allocation
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*
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***************************************************************************
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*/
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/**
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* Allocate offsets within usage bitmask
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*
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* @v bits Usage bitmask
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* @v bits_len Length of usage bitmask
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* @v num_bits Number of contiguous bits to allocate within bitmask
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* @ret bit First free bit within bitmask, or negative error
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*/
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static int hermon_bitmask_alloc ( hermon_bitmask_t *bits,
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unsigned int bits_len,
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unsigned int num_bits ) {
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unsigned int bit = 0;
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hermon_bitmask_t mask = 1;
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unsigned int found = 0;
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/* Search bits for num_bits contiguous free bits */
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while ( bit < bits_len ) {
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if ( ( mask & *bits ) == 0 ) {
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if ( ++found == num_bits )
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goto found;
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} else {
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found = 0;
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}
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bit++;
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mask = ( mask << 1 ) | ( mask >> ( 8 * sizeof ( mask ) - 1 ) );
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if ( mask == 1 )
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bits++;
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}
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return -ENFILE;
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found:
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/* Mark bits as in-use */
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do {
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*bits |= mask;
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if ( mask == 1 )
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bits--;
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mask = ( mask >> 1 ) | ( mask << ( 8 * sizeof ( mask ) - 1 ) );
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} while ( --found );
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return ( bit - num_bits + 1 );
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}
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/**
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* Free offsets within usage bitmask
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*
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* @v bits Usage bitmask
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* @v bit Starting bit within bitmask
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* @v num_bits Number of contiguous bits to free within bitmask
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*/
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static void hermon_bitmask_free ( hermon_bitmask_t *bits,
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int bit, unsigned int num_bits ) {
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hermon_bitmask_t mask;
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for ( ; num_bits ; bit++, num_bits-- ) {
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mask = ( 1 << ( bit % ( 8 * sizeof ( mask ) ) ) );
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bits[ ( bit / ( 8 * sizeof ( mask ) ) ) ] &= ~mask;
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}
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}
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/***************************************************************************
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*
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* HCA commands
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*
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***************************************************************************
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*/
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/**
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* Wait for Hermon command completion
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*
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* @v hermon Hermon device
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* @v hcr HCA command registers
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* @ret rc Return status code
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*/
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static int hermon_cmd_wait ( struct hermon *hermon,
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struct hermonprm_hca_command_register *hcr ) {
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unsigned int wait;
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for ( wait = HERMON_HCR_MAX_WAIT_MS ; wait ; wait-- ) {
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hcr->u.dwords[6] =
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readl ( hermon->config + HERMON_HCR_REG ( 6 ) );
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if ( ( MLX_GET ( hcr, go ) == 0 ) &&
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( MLX_GET ( hcr, t ) == hermon->toggle ) )
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return 0;
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mdelay ( 1 );
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}
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return -EBUSY;
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}
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/**
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* Issue HCA command
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*
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* @v hermon Hermon device
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* @v command Command opcode, flags and input/output lengths
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* @v op_mod Opcode modifier (0 if no modifier applicable)
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* @v in Input parameters
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* @v in_mod Input modifier (0 if no modifier applicable)
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* @v out Output parameters
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* @ret rc Return status code
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*/
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static int hermon_cmd ( struct hermon *hermon, unsigned long command,
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unsigned int op_mod, const void *in,
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unsigned int in_mod, void *out ) {
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struct hermonprm_hca_command_register hcr;
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unsigned int opcode = HERMON_HCR_OPCODE ( command );
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size_t in_len = HERMON_HCR_IN_LEN ( command );
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size_t out_len = HERMON_HCR_OUT_LEN ( command );
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void *in_buffer;
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void *out_buffer;
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unsigned int status;
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unsigned int i;
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int rc;
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assert ( in_len <= HERMON_MBOX_SIZE );
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assert ( out_len <= HERMON_MBOX_SIZE );
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DBGC2 ( hermon, "Hermon %p command %02x in %zx%s out %zx%s\n",
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hermon, opcode, in_len,
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( ( command & HERMON_HCR_IN_MBOX ) ? "(mbox)" : "" ), out_len,
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( ( command & HERMON_HCR_OUT_MBOX ) ? "(mbox)" : "" ) );
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/* Check that HCR is free */
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if ( ( rc = hermon_cmd_wait ( hermon, &hcr ) ) != 0 ) {
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DBGC ( hermon, "Hermon %p command interface locked\n",
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hermon );
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return rc;
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}
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/* Flip HCR toggle */
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hermon->toggle = ( 1 - hermon->toggle );
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/* Prepare HCR */
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memset ( &hcr, 0, sizeof ( hcr ) );
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in_buffer = &hcr.u.dwords[0];
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if ( in_len && ( command & HERMON_HCR_IN_MBOX ) ) {
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in_buffer = hermon->mailbox_in;
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MLX_FILL_1 ( &hcr, 1, in_param_l, virt_to_bus ( in_buffer ) );
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}
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memcpy ( in_buffer, in, in_len );
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MLX_FILL_1 ( &hcr, 2, input_modifier, in_mod );
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out_buffer = &hcr.u.dwords[3];
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if ( out_len && ( command & HERMON_HCR_OUT_MBOX ) ) {
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out_buffer = hermon->mailbox_out;
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MLX_FILL_1 ( &hcr, 4, out_param_l,
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virt_to_bus ( out_buffer ) );
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}
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MLX_FILL_4 ( &hcr, 6,
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opcode, opcode,
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opcode_modifier, op_mod,
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go, 1,
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t, hermon->toggle );
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DBGC ( hermon, "Hermon %p issuing command:\n", hermon );
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DBGC_HDA ( hermon, virt_to_phys ( hermon->config + HERMON_HCR_BASE ),
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&hcr, sizeof ( hcr ) );
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if ( in_len && ( command & HERMON_HCR_IN_MBOX ) ) {
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DBGC2 ( hermon, "Input mailbox:\n" );
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DBGC2_HDA ( hermon, virt_to_phys ( in_buffer ), in_buffer,
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( ( in_len < 512 ) ? in_len : 512 ) );
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}
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/* Issue command */
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for ( i = 0 ; i < ( sizeof ( hcr ) / sizeof ( hcr.u.dwords[0] ) ) ;
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i++ ) {
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writel ( hcr.u.dwords[i],
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hermon->config + HERMON_HCR_REG ( i ) );
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barrier();
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}
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/* Wait for command completion */
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if ( ( rc = hermon_cmd_wait ( hermon, &hcr ) ) != 0 ) {
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DBGC ( hermon, "Hermon %p timed out waiting for command:\n",
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hermon );
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DBGC_HDA ( hermon,
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virt_to_phys ( hermon->config + HERMON_HCR_BASE ),
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&hcr, sizeof ( hcr ) );
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return rc;
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}
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/* Check command status */
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status = MLX_GET ( &hcr, status );
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if ( status != 0 ) {
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DBGC ( hermon, "Hermon %p command failed with status %02x:\n",
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hermon, status );
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DBGC_HDA ( hermon,
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virt_to_phys ( hermon->config + HERMON_HCR_BASE ),
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&hcr, sizeof ( hcr ) );
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return -EIO;
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}
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/* Read output parameters, if any */
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hcr.u.dwords[3] = readl ( hermon->config + HERMON_HCR_REG ( 3 ) );
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hcr.u.dwords[4] = readl ( hermon->config + HERMON_HCR_REG ( 4 ) );
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memcpy ( out, out_buffer, out_len );
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if ( out_len ) {
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DBGC2 ( hermon, "Output%s:\n",
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( command & HERMON_HCR_OUT_MBOX ) ? " mailbox" : "" );
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DBGC2_HDA ( hermon, virt_to_phys ( out_buffer ), out_buffer,
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( ( out_len < 512 ) ? out_len : 512 ) );
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}
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return 0;
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}
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static inline int
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hermon_cmd_query_dev_cap ( struct hermon *hermon,
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struct hermonprm_query_dev_cap *dev_cap ) {
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return hermon_cmd ( hermon,
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HERMON_HCR_OUT_CMD ( HERMON_HCR_QUERY_DEV_CAP,
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1, sizeof ( *dev_cap ) ),
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0, NULL, 0, dev_cap );
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}
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static inline int
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hermon_cmd_query_fw ( struct hermon *hermon, struct hermonprm_query_fw *fw ) {
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return hermon_cmd ( hermon,
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HERMON_HCR_OUT_CMD ( HERMON_HCR_QUERY_FW,
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1, sizeof ( *fw ) ),
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0, NULL, 0, fw );
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}
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static inline int
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hermon_cmd_init_hca ( struct hermon *hermon,
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const struct hermonprm_init_hca *init_hca ) {
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return hermon_cmd ( hermon,
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HERMON_HCR_IN_CMD ( HERMON_HCR_INIT_HCA,
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1, sizeof ( *init_hca ) ),
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0, init_hca, 0, NULL );
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}
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static inline int
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hermon_cmd_close_hca ( struct hermon *hermon ) {
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return hermon_cmd ( hermon,
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HERMON_HCR_VOID_CMD ( HERMON_HCR_CLOSE_HCA ),
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0, NULL, 0, NULL );
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}
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static inline int
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hermon_cmd_init_port ( struct hermon *hermon, unsigned int port,
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const struct hermonprm_init_port *init_port ) {
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return hermon_cmd ( hermon,
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HERMON_HCR_IN_CMD ( HERMON_HCR_INIT_PORT,
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1, sizeof ( *init_port ) ),
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0, init_port, port, NULL );
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}
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|
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static inline int
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hermon_cmd_close_port ( struct hermon *hermon, unsigned int port ) {
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return hermon_cmd ( hermon,
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HERMON_HCR_VOID_CMD ( HERMON_HCR_CLOSE_PORT ),
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0, NULL, port, NULL );
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}
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static inline int
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hermon_cmd_sw2hw_mpt ( struct hermon *hermon, unsigned int index,
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const struct hermonprm_mpt *mpt ) {
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return hermon_cmd ( hermon,
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HERMON_HCR_IN_CMD ( HERMON_HCR_SW2HW_MPT,
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1, sizeof ( *mpt ) ),
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0, mpt, index, NULL );
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}
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|
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static inline int
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hermon_cmd_write_mtt ( struct hermon *hermon,
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const struct hermonprm_write_mtt *write_mtt ) {
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return hermon_cmd ( hermon,
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HERMON_HCR_IN_CMD ( HERMON_HCR_WRITE_MTT,
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1, sizeof ( *write_mtt ) ),
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0, write_mtt, 1, NULL );
|
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}
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|
|
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static inline int
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hermon_cmd_sw2hw_eq ( struct hermon *hermon, unsigned int index,
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const struct hermonprm_eqc *eqc ) {
|
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return hermon_cmd ( hermon,
|
||
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HERMON_HCR_IN_CMD ( HERMON_HCR_SW2HW_EQ,
|
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1, sizeof ( *eqc ) ),
|
||
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0, eqc, index, NULL );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_hw2sw_eq ( struct hermon *hermon, unsigned int index ) {
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_VOID_CMD ( HERMON_HCR_HW2SW_EQ ),
|
||
|
1, NULL, index, NULL );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_sw2hw_cq ( struct hermon *hermon, unsigned long cqn,
|
||
|
const struct hermonprm_completion_queue_context *cqctx ){
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_IN_CMD ( HERMON_HCR_SW2HW_CQ,
|
||
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1, sizeof ( *cqctx ) ),
|
||
|
0, cqctx, cqn, NULL );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_hw2sw_cq ( struct hermon *hermon, unsigned long cqn,
|
||
|
struct hermonprm_completion_queue_context *cqctx) {
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_OUT_CMD ( HERMON_HCR_HW2SW_CQ,
|
||
|
1, sizeof ( *cqctx ) ),
|
||
|
0, NULL, cqn, cqctx );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_rst2init_qp ( struct hermon *hermon, unsigned long qpn,
|
||
|
const struct hermonprm_qp_ee_state_transitions *ctx ){
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_IN_CMD ( HERMON_HCR_RST2INIT_QP,
|
||
|
1, sizeof ( *ctx ) ),
|
||
|
0, ctx, qpn, NULL );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_init2rtr_qp ( struct hermon *hermon, unsigned long qpn,
|
||
|
const struct hermonprm_qp_ee_state_transitions *ctx ){
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_IN_CMD ( HERMON_HCR_INIT2RTR_QP,
|
||
|
1, sizeof ( *ctx ) ),
|
||
|
0, ctx, qpn, NULL );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_rtr2rts_qp ( struct hermon *hermon, unsigned long qpn,
|
||
|
const struct hermonprm_qp_ee_state_transitions *ctx ) {
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_IN_CMD ( HERMON_HCR_RTR2RTS_QP,
|
||
|
1, sizeof ( *ctx ) ),
|
||
|
0, ctx, qpn, NULL );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_2rst_qp ( struct hermon *hermon, unsigned long qpn ) {
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_VOID_CMD ( HERMON_HCR_2RST_QP ),
|
||
|
0x03, NULL, qpn, NULL );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_mad_ifc ( struct hermon *hermon, union hermonprm_mad *mad ) {
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_INOUT_CMD ( HERMON_HCR_MAD_IFC,
|
||
|
1, sizeof ( *mad ),
|
||
|
1, sizeof ( *mad ) ),
|
||
|
0x03, mad, PXE_IB_PORT, mad );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_read_mcg ( struct hermon *hermon, unsigned int index,
|
||
|
struct hermonprm_mcg_entry *mcg ) {
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_OUT_CMD ( HERMON_HCR_READ_MCG,
|
||
|
1, sizeof ( *mcg ) ),
|
||
|
0, NULL, index, mcg );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_write_mcg ( struct hermon *hermon, unsigned int index,
|
||
|
const struct hermonprm_mcg_entry *mcg ) {
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_IN_CMD ( HERMON_HCR_WRITE_MCG,
|
||
|
1, sizeof ( *mcg ) ),
|
||
|
0, mcg, index, NULL );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_mgid_hash ( struct hermon *hermon, const struct ib_gid *gid,
|
||
|
struct hermonprm_mgm_hash *hash ) {
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_INOUT_CMD ( HERMON_HCR_MGID_HASH,
|
||
|
1, sizeof ( *gid ),
|
||
|
0, sizeof ( *hash ) ),
|
||
|
0, gid, 0, hash );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_run_fw ( struct hermon *hermon ) {
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_VOID_CMD ( HERMON_HCR_RUN_FW ),
|
||
|
0, NULL, 0, NULL );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_unmap_icm ( struct hermon *hermon, unsigned int page_count,
|
||
|
const struct hermonprm_scalar_parameter *offset ) {
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_IN_CMD ( HERMON_HCR_UNMAP_ICM,
|
||
|
0, sizeof ( *offset ) ),
|
||
|
0, offset, page_count, NULL );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_map_icm ( struct hermon *hermon,
|
||
|
const struct hermonprm_virtual_physical_mapping *map ) {
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_IN_CMD ( HERMON_HCR_MAP_ICM,
|
||
|
1, sizeof ( *map ) ),
|
||
|
0, map, 1, NULL );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_unmap_icm_aux ( struct hermon *hermon ) {
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_VOID_CMD ( HERMON_HCR_UNMAP_ICM_AUX ),
|
||
|
0, NULL, 0, NULL );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_map_icm_aux ( struct hermon *hermon,
|
||
|
const struct hermonprm_virtual_physical_mapping *map ) {
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_IN_CMD ( HERMON_HCR_MAP_ICM_AUX,
|
||
|
1, sizeof ( *map ) ),
|
||
|
0, map, 1, NULL );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_set_icm_size ( struct hermon *hermon,
|
||
|
const struct hermonprm_scalar_parameter *icm_size,
|
||
|
struct hermonprm_scalar_parameter *icm_aux_size ) {
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_INOUT_CMD ( HERMON_HCR_SET_ICM_SIZE,
|
||
|
0, sizeof ( *icm_size ),
|
||
|
0, sizeof (*icm_aux_size) ),
|
||
|
0, icm_size, 0, icm_aux_size );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_unmap_fa ( struct hermon *hermon ) {
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_VOID_CMD ( HERMON_HCR_UNMAP_FA ),
|
||
|
0, NULL, 0, NULL );
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
hermon_cmd_map_fa ( struct hermon *hermon,
|
||
|
const struct hermonprm_virtual_physical_mapping *map ) {
|
||
|
return hermon_cmd ( hermon,
|
||
|
HERMON_HCR_IN_CMD ( HERMON_HCR_MAP_FA,
|
||
|
1, sizeof ( *map ) ),
|
||
|
0, map, 1, NULL );
|
||
|
}
|
||
|
|
||
|
/***************************************************************************
|
||
|
*
|
||
|
* Memory translation table operations
|
||
|
*
|
||
|
***************************************************************************
|
||
|
*/
|
||
|
|
||
|
/**
|
||
|
* Allocate MTT entries
|
||
|
*
|
||
|
* @v hermon Hermon device
|
||
|
* @v memory Memory to map into MTT
|
||
|
* @v len Length of memory to map
|
||
|
* @v mtt MTT descriptor to fill in
|
||
|
* @ret rc Return status code
|
||
|
*/
|
||
|
static int hermon_alloc_mtt ( struct hermon *hermon,
|
||
|
const void *memory, size_t len,
|
||
|
struct hermon_mtt *mtt ) {
|
||
|
struct hermonprm_write_mtt write_mtt;
|
||
|
physaddr_t start;
|
||
|
unsigned int page_offset;
|
||
|
unsigned int num_pages;
|
||
|
int mtt_offset;
|
||
|
unsigned int mtt_base_addr;
|
||
|
unsigned int i;
|
||
|
int rc;
|
||
|
|
||
|
/* Find available MTT entries */
|
||
|
start = virt_to_phys ( memory );
|
||
|
page_offset = ( start & ( HERMON_PAGE_SIZE - 1 ) );
|
||
|
start -= page_offset;
|
||
|
len += page_offset;
|
||
|
num_pages = ( ( len + HERMON_PAGE_SIZE - 1 ) / HERMON_PAGE_SIZE );
|
||
|
mtt_offset = hermon_bitmask_alloc ( hermon->mtt_inuse, HERMON_MAX_MTTS,
|
||
|
num_pages );
|
||
|
if ( mtt_offset < 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not allocate %d MTT entries\n",
|
||
|
hermon, num_pages );
|
||
|
rc = mtt_offset;
|
||
|
goto err_mtt_offset;
|
||
|
}
|
||
|
mtt_base_addr = ( ( hermon->cap.reserved_mtts + mtt_offset ) *
|
||
|
hermon->cap.mtt_entry_size );
|
||
|
|
||
|
/* Fill in MTT structure */
|
||
|
mtt->mtt_offset = mtt_offset;
|
||
|
mtt->num_pages = num_pages;
|
||
|
mtt->mtt_base_addr = mtt_base_addr;
|
||
|
mtt->page_offset = page_offset;
|
||
|
|
||
|
/* Construct and issue WRITE_MTT commands */
|
||
|
for ( i = 0 ; i < num_pages ; i++ ) {
|
||
|
memset ( &write_mtt, 0, sizeof ( write_mtt ) );
|
||
|
MLX_FILL_1 ( &write_mtt.mtt_base_addr, 1,
|
||
|
value, mtt_base_addr );
|
||
|
MLX_FILL_2 ( &write_mtt.mtt, 1,
|
||
|
p, 1,
|
||
|
ptag_l, ( start >> 3 ) );
|
||
|
if ( ( rc = hermon_cmd_write_mtt ( hermon,
|
||
|
&write_mtt ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not write MTT at %x\n",
|
||
|
hermon, mtt_base_addr );
|
||
|
goto err_write_mtt;
|
||
|
}
|
||
|
start += HERMON_PAGE_SIZE;
|
||
|
mtt_base_addr += hermon->cap.mtt_entry_size;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
|
||
|
err_write_mtt:
|
||
|
hermon_bitmask_free ( hermon->mtt_inuse, mtt_offset, num_pages );
|
||
|
err_mtt_offset:
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Free MTT entries
|
||
|
*
|
||
|
* @v hermon Hermon device
|
||
|
* @v mtt MTT descriptor
|
||
|
*/
|
||
|
static void hermon_free_mtt ( struct hermon *hermon,
|
||
|
struct hermon_mtt *mtt ) {
|
||
|
hermon_bitmask_free ( hermon->mtt_inuse, mtt->mtt_offset,
|
||
|
mtt->num_pages );
|
||
|
}
|
||
|
|
||
|
/***************************************************************************
|
||
|
*
|
||
|
* Completion queue operations
|
||
|
*
|
||
|
***************************************************************************
|
||
|
*/
|
||
|
|
||
|
/**
|
||
|
* Create completion queue
|
||
|
*
|
||
|
* @v ibdev Infiniband device
|
||
|
* @v cq Completion queue
|
||
|
* @ret rc Return status code
|
||
|
*/
|
||
|
static int hermon_create_cq ( struct ib_device *ibdev,
|
||
|
struct ib_completion_queue *cq ) {
|
||
|
struct hermon *hermon = ibdev->dev_priv;
|
||
|
struct hermon_completion_queue *hermon_cq;
|
||
|
struct hermonprm_completion_queue_context cqctx;
|
||
|
int cqn_offset;
|
||
|
unsigned int i;
|
||
|
int rc;
|
||
|
|
||
|
/* Find a free completion queue number */
|
||
|
cqn_offset = hermon_bitmask_alloc ( hermon->cq_inuse,
|
||
|
HERMON_MAX_CQS, 1 );
|
||
|
if ( cqn_offset < 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p out of completion queues\n",
|
||
|
hermon );
|
||
|
rc = cqn_offset;
|
||
|
goto err_cqn_offset;
|
||
|
}
|
||
|
cq->cqn = ( hermon->cap.reserved_cqs + cqn_offset );
|
||
|
|
||
|
/* Allocate control structures */
|
||
|
hermon_cq = zalloc ( sizeof ( *hermon_cq ) );
|
||
|
if ( ! hermon_cq ) {
|
||
|
rc = -ENOMEM;
|
||
|
goto err_hermon_cq;
|
||
|
}
|
||
|
|
||
|
/* Allocate completion queue itself */
|
||
|
hermon_cq->cqe_size = ( cq->num_cqes * sizeof ( hermon_cq->cqe[0] ) );
|
||
|
hermon_cq->cqe = malloc_dma ( hermon_cq->cqe_size,
|
||
|
sizeof ( hermon_cq->cqe[0] ) );
|
||
|
if ( ! hermon_cq->cqe ) {
|
||
|
rc = -ENOMEM;
|
||
|
goto err_cqe;
|
||
|
}
|
||
|
memset ( hermon_cq->cqe, 0, hermon_cq->cqe_size );
|
||
|
for ( i = 0 ; i < cq->num_cqes ; i++ ) {
|
||
|
MLX_FILL_1 ( &hermon_cq->cqe[i].normal, 7, owner, 1 );
|
||
|
}
|
||
|
barrier();
|
||
|
|
||
|
/* Allocate MTT entries */
|
||
|
if ( ( rc = hermon_alloc_mtt ( hermon, hermon_cq->cqe,
|
||
|
hermon_cq->cqe_size,
|
||
|
&hermon_cq->mtt ) ) != 0 )
|
||
|
goto err_alloc_mtt;
|
||
|
|
||
|
/* Hand queue over to hardware */
|
||
|
memset ( &cqctx, 0, sizeof ( cqctx ) );
|
||
|
MLX_FILL_1 ( &cqctx, 0, st, 0xa /* "Event fired" */ );
|
||
|
MLX_FILL_1 ( &cqctx, 2,
|
||
|
page_offset, ( hermon_cq->mtt.page_offset >> 5 ) );
|
||
|
MLX_FILL_2 ( &cqctx, 3,
|
||
|
usr_page, HERMON_UAR_PAGE,
|
||
|
log_cq_size, fls ( cq->num_cqes - 1 ) );
|
||
|
MLX_FILL_1 ( &cqctx, 7, mtt_base_addr_l,
|
||
|
( hermon_cq->mtt.mtt_base_addr >> 3 ) );
|
||
|
MLX_FILL_1 ( &cqctx, 15, db_record_addr_l,
|
||
|
( virt_to_phys ( &hermon_cq->doorbell ) >> 3 ) );
|
||
|
if ( ( rc = hermon_cmd_sw2hw_cq ( hermon, cq->cqn, &cqctx ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p SW2HW_CQ failed: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
goto err_sw2hw_cq;
|
||
|
}
|
||
|
|
||
|
DBGC ( hermon, "Hermon %p CQN %#lx ring at [%p,%p)\n",
|
||
|
hermon, cq->cqn, hermon_cq->cqe,
|
||
|
( ( ( void * ) hermon_cq->cqe ) + hermon_cq->cqe_size ) );
|
||
|
cq->dev_priv = hermon_cq;
|
||
|
return 0;
|
||
|
|
||
|
err_sw2hw_cq:
|
||
|
hermon_free_mtt ( hermon, &hermon_cq->mtt );
|
||
|
err_alloc_mtt:
|
||
|
free_dma ( hermon_cq->cqe, hermon_cq->cqe_size );
|
||
|
err_cqe:
|
||
|
free ( hermon_cq );
|
||
|
err_hermon_cq:
|
||
|
hermon_bitmask_free ( hermon->cq_inuse, cqn_offset, 1 );
|
||
|
err_cqn_offset:
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Destroy completion queue
|
||
|
*
|
||
|
* @v ibdev Infiniband device
|
||
|
* @v cq Completion queue
|
||
|
*/
|
||
|
static void hermon_destroy_cq ( struct ib_device *ibdev,
|
||
|
struct ib_completion_queue *cq ) {
|
||
|
struct hermon *hermon = ibdev->dev_priv;
|
||
|
struct hermon_completion_queue *hermon_cq = cq->dev_priv;
|
||
|
struct hermonprm_completion_queue_context cqctx;
|
||
|
int cqn_offset;
|
||
|
int rc;
|
||
|
|
||
|
/* Take ownership back from hardware */
|
||
|
if ( ( rc = hermon_cmd_hw2sw_cq ( hermon, cq->cqn, &cqctx ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p FATAL HW2SW_CQ failed on CQN %#lx: "
|
||
|
"%s\n", hermon, cq->cqn, strerror ( rc ) );
|
||
|
/* Leak memory and return; at least we avoid corruption */
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
/* Free MTT entries */
|
||
|
hermon_free_mtt ( hermon, &hermon_cq->mtt );
|
||
|
|
||
|
/* Free memory */
|
||
|
free_dma ( hermon_cq->cqe, hermon_cq->cqe_size );
|
||
|
free ( hermon_cq );
|
||
|
|
||
|
/* Mark queue number as free */
|
||
|
cqn_offset = ( cq->cqn - hermon->cap.reserved_cqs );
|
||
|
hermon_bitmask_free ( hermon->cq_inuse, cqn_offset, 1 );
|
||
|
|
||
|
cq->dev_priv = NULL;
|
||
|
}
|
||
|
|
||
|
/***************************************************************************
|
||
|
*
|
||
|
* Queue pair operations
|
||
|
*
|
||
|
***************************************************************************
|
||
|
*/
|
||
|
|
||
|
/**
|
||
|
* Create queue pair
|
||
|
*
|
||
|
* @v ibdev Infiniband device
|
||
|
* @v qp Queue pair
|
||
|
* @ret rc Return status code
|
||
|
*/
|
||
|
static int hermon_create_qp ( struct ib_device *ibdev,
|
||
|
struct ib_queue_pair *qp ) {
|
||
|
struct hermon *hermon = ibdev->dev_priv;
|
||
|
struct hermon_queue_pair *hermon_qp;
|
||
|
struct hermonprm_qp_ee_state_transitions qpctx;
|
||
|
int qpn_offset;
|
||
|
int rc;
|
||
|
|
||
|
/* Find a free queue pair number */
|
||
|
qpn_offset = hermon_bitmask_alloc ( hermon->qp_inuse,
|
||
|
HERMON_MAX_QPS, 1 );
|
||
|
if ( qpn_offset < 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p out of queue pairs\n", hermon );
|
||
|
rc = qpn_offset;
|
||
|
goto err_qpn_offset;
|
||
|
}
|
||
|
qp->qpn = ( HERMON_QPN_BASE + hermon->cap.reserved_qps +
|
||
|
qpn_offset );
|
||
|
|
||
|
/* Allocate control structures */
|
||
|
hermon_qp = zalloc ( sizeof ( *hermon_qp ) );
|
||
|
if ( ! hermon_qp ) {
|
||
|
rc = -ENOMEM;
|
||
|
goto err_hermon_qp;
|
||
|
}
|
||
|
|
||
|
/* Allocate work queue buffer */
|
||
|
hermon_qp->send.num_wqes = ( qp->send.num_wqes /* headroom */ + 1 +
|
||
|
( 2048 / sizeof ( hermon_qp->send.wqe[0] ) ) );
|
||
|
hermon_qp->send.num_wqes =
|
||
|
( 1 << fls ( hermon_qp->send.num_wqes - 1 ) ); /* round up */
|
||
|
hermon_qp->send.wqe_size = ( hermon_qp->send.num_wqes *
|
||
|
sizeof ( hermon_qp->send.wqe[0] ) );
|
||
|
hermon_qp->recv.wqe_size = ( qp->recv.num_wqes *
|
||
|
sizeof ( hermon_qp->recv.wqe[0] ) );
|
||
|
hermon_qp->wqe_size = ( hermon_qp->send.wqe_size +
|
||
|
hermon_qp->recv.wqe_size );
|
||
|
hermon_qp->wqe = malloc_dma ( hermon_qp->wqe_size,
|
||
|
sizeof ( hermon_qp->send.wqe[0] ) );
|
||
|
if ( ! hermon_qp->wqe ) {
|
||
|
rc = -ENOMEM;
|
||
|
goto err_alloc_wqe;
|
||
|
}
|
||
|
hermon_qp->send.wqe = hermon_qp->wqe;
|
||
|
memset ( hermon_qp->send.wqe, 0xff, hermon_qp->send.wqe_size );
|
||
|
hermon_qp->recv.wqe = ( hermon_qp->wqe + hermon_qp->send.wqe_size );
|
||
|
memset ( hermon_qp->recv.wqe, 0, hermon_qp->recv.wqe_size );
|
||
|
|
||
|
/* Allocate MTT entries */
|
||
|
if ( ( rc = hermon_alloc_mtt ( hermon, hermon_qp->wqe,
|
||
|
hermon_qp->wqe_size,
|
||
|
&hermon_qp->mtt ) ) != 0 ) {
|
||
|
goto err_alloc_mtt;
|
||
|
}
|
||
|
|
||
|
/* Hand queue over to hardware */
|
||
|
memset ( &qpctx, 0, sizeof ( qpctx ) );
|
||
|
MLX_FILL_2 ( &qpctx, 2,
|
||
|
qpc_eec_data.pm_state, 0x03 /* Always 0x03 for UD */,
|
||
|
qpc_eec_data.st, HERMON_ST_UD );
|
||
|
MLX_FILL_1 ( &qpctx, 3, qpc_eec_data.pd, HERMON_GLOBAL_PD );
|
||
|
MLX_FILL_4 ( &qpctx, 4,
|
||
|
qpc_eec_data.log_rq_size, fls ( qp->recv.num_wqes - 1 ),
|
||
|
qpc_eec_data.log_rq_stride,
|
||
|
( fls ( sizeof ( hermon_qp->recv.wqe[0] ) - 1 ) - 4 ),
|
||
|
qpc_eec_data.log_sq_size,
|
||
|
fls ( hermon_qp->send.num_wqes - 1 ),
|
||
|
qpc_eec_data.log_sq_stride,
|
||
|
( fls ( sizeof ( hermon_qp->send.wqe[0] ) - 1 ) - 4 ) );
|
||
|
MLX_FILL_1 ( &qpctx, 5,
|
||
|
qpc_eec_data.usr_page, HERMON_UAR_PAGE );
|
||
|
MLX_FILL_1 ( &qpctx, 33, qpc_eec_data.cqn_snd, qp->send.cq->cqn );
|
||
|
MLX_FILL_1 ( &qpctx, 38, qpc_eec_data.page_offset,
|
||
|
( hermon_qp->mtt.page_offset >> 6 ) );
|
||
|
MLX_FILL_1 ( &qpctx, 41, qpc_eec_data.cqn_rcv, qp->recv.cq->cqn );
|
||
|
MLX_FILL_1 ( &qpctx, 43, qpc_eec_data.db_record_addr_l,
|
||
|
( virt_to_phys ( &hermon_qp->recv.doorbell ) >> 2 ) );
|
||
|
MLX_FILL_1 ( &qpctx, 44, qpc_eec_data.q_key, qp->qkey );
|
||
|
MLX_FILL_1 ( &qpctx, 53, qpc_eec_data.mtt_base_addr_l,
|
||
|
( hermon_qp->mtt.mtt_base_addr >> 3 ) );
|
||
|
if ( ( rc = hermon_cmd_rst2init_qp ( hermon, qp->qpn,
|
||
|
&qpctx ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p RST2INIT_QP failed: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
goto err_rst2init_qp;
|
||
|
}
|
||
|
|
||
|
memset ( &qpctx, 0, sizeof ( qpctx ) );
|
||
|
MLX_FILL_2 ( &qpctx, 4,
|
||
|
qpc_eec_data.mtu, HERMON_MTU_2048,
|
||
|
qpc_eec_data.msg_max, 11 /* 2^11 = 2048 */ );
|
||
|
MLX_FILL_1 ( &qpctx, 16,
|
||
|
qpc_eec_data.primary_address_path.sched_queue,
|
||
|
( 0x83 /* default policy */ |
|
||
|
( ( PXE_IB_PORT - 1 ) << 6 ) ) );
|
||
|
if ( ( rc = hermon_cmd_init2rtr_qp ( hermon, qp->qpn,
|
||
|
&qpctx ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p INIT2RTR_QP failed: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
goto err_init2rtr_qp;
|
||
|
}
|
||
|
memset ( &qpctx, 0, sizeof ( qpctx ) );
|
||
|
if ( ( rc = hermon_cmd_rtr2rts_qp ( hermon, qp->qpn, &qpctx ) ) != 0 ){
|
||
|
DBGC ( hermon, "Hermon %p RTR2RTS_QP failed: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
goto err_rtr2rts_qp;
|
||
|
}
|
||
|
|
||
|
DBGC ( hermon, "Hermon %p QPN %#lx send ring at [%p,%p)\n",
|
||
|
hermon, qp->qpn, hermon_qp->send.wqe,
|
||
|
( ((void *)hermon_qp->send.wqe ) + hermon_qp->send.wqe_size ) );
|
||
|
DBGC ( hermon, "Hermon %p QPN %#lx receive ring at [%p,%p)\n",
|
||
|
hermon, qp->qpn, hermon_qp->recv.wqe,
|
||
|
( ((void *)hermon_qp->recv.wqe ) + hermon_qp->recv.wqe_size ) );
|
||
|
qp->dev_priv = hermon_qp;
|
||
|
return 0;
|
||
|
|
||
|
err_rtr2rts_qp:
|
||
|
err_init2rtr_qp:
|
||
|
hermon_cmd_2rst_qp ( hermon, qp->qpn );
|
||
|
err_rst2init_qp:
|
||
|
hermon_free_mtt ( hermon, &hermon_qp->mtt );
|
||
|
err_alloc_mtt:
|
||
|
free_dma ( hermon_qp->wqe, hermon_qp->wqe_size );
|
||
|
err_alloc_wqe:
|
||
|
free ( hermon_qp );
|
||
|
err_hermon_qp:
|
||
|
hermon_bitmask_free ( hermon->qp_inuse, qpn_offset, 1 );
|
||
|
err_qpn_offset:
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Destroy queue pair
|
||
|
*
|
||
|
* @v ibdev Infiniband device
|
||
|
* @v qp Queue pair
|
||
|
*/
|
||
|
static void hermon_destroy_qp ( struct ib_device *ibdev,
|
||
|
struct ib_queue_pair *qp ) {
|
||
|
struct hermon *hermon = ibdev->dev_priv;
|
||
|
struct hermon_queue_pair *hermon_qp = qp->dev_priv;
|
||
|
int qpn_offset;
|
||
|
int rc;
|
||
|
|
||
|
/* Take ownership back from hardware */
|
||
|
if ( ( rc = hermon_cmd_2rst_qp ( hermon, qp->qpn ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p FATAL 2RST_QP failed on QPN %#lx: "
|
||
|
"%s\n", hermon, qp->qpn, strerror ( rc ) );
|
||
|
/* Leak memory and return; at least we avoid corruption */
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
/* Free MTT entries */
|
||
|
hermon_free_mtt ( hermon, &hermon_qp->mtt );
|
||
|
|
||
|
/* Free memory */
|
||
|
free_dma ( hermon_qp->wqe, hermon_qp->wqe_size );
|
||
|
free ( hermon_qp );
|
||
|
|
||
|
/* Mark queue number as free */
|
||
|
qpn_offset = ( qp->qpn - HERMON_QPN_BASE -
|
||
|
hermon->cap.reserved_qps );
|
||
|
hermon_bitmask_free ( hermon->qp_inuse, qpn_offset, 1 );
|
||
|
|
||
|
qp->dev_priv = NULL;
|
||
|
}
|
||
|
|
||
|
/***************************************************************************
|
||
|
*
|
||
|
* Work request operations
|
||
|
*
|
||
|
***************************************************************************
|
||
|
*/
|
||
|
|
||
|
/** GID used for GID-less send work queue entries */
|
||
|
static const struct ib_gid hermon_no_gid = {
|
||
|
{ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 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 hermon_post_send ( struct ib_device *ibdev,
|
||
|
struct ib_queue_pair *qp,
|
||
|
struct ib_address_vector *av,
|
||
|
struct io_buffer *iobuf ) {
|
||
|
struct hermon *hermon = ibdev->dev_priv;
|
||
|
struct hermon_queue_pair *hermon_qp = qp->dev_priv;
|
||
|
struct ib_work_queue *wq = &qp->send;
|
||
|
struct hermon_send_work_queue *hermon_send_wq = &hermon_qp->send;
|
||
|
struct hermonprm_ud_send_wqe *wqe;
|
||
|
const struct ib_gid *gid;
|
||
|
union hermonprm_doorbell_register db_reg;
|
||
|
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 ( hermon, "Hermon %p send queue full", hermon );
|
||
|
return -ENOBUFS;
|
||
|
}
|
||
|
wq->iobufs[wq->next_idx & wqe_idx_mask] = iobuf;
|
||
|
wqe = &hermon_send_wq->wqe[ wq->next_idx &
|
||
|
( hermon_send_wq->num_wqes - 1 ) ].ud;
|
||
|
|
||
|
/* Construct work queue entry */
|
||
|
memset ( ( ( ( void * ) wqe ) + 4 /* avoid ctrl.owner */ ), 0,
|
||
|
( sizeof ( *wqe ) - 4 ) );
|
||
|
MLX_FILL_1 ( &wqe->ctrl, 1, ds, ( sizeof ( *wqe ) / 16 ) );
|
||
|
MLX_FILL_1 ( &wqe->ctrl, 2, c, 0x03 /* generate completion */ );
|
||
|
MLX_FILL_2 ( &wqe->ud, 0,
|
||
|
ud_address_vector.pd, HERMON_GLOBAL_PD,
|
||
|
ud_address_vector.port_number, PXE_IB_PORT );
|
||
|
MLX_FILL_2 ( &wqe->ud, 1,
|
||
|
ud_address_vector.rlid, av->dlid,
|
||
|
ud_address_vector.g, av->gid_present );
|
||
|
MLX_FILL_1 ( &wqe->ud, 2,
|
||
|
ud_address_vector.max_stat_rate,
|
||
|
( ( ( av->rate < 2 ) || ( av->rate > 10 ) ) ?
|
||
|
8 : ( av->rate + 5 ) ) );
|
||
|
MLX_FILL_1 ( &wqe->ud, 3, ud_address_vector.sl, av->sl );
|
||
|
gid = ( av->gid_present ? &av->gid : &hermon_no_gid );
|
||
|
memcpy ( &wqe->ud.u.dwords[4], gid, sizeof ( *gid ) );
|
||
|
MLX_FILL_1 ( &wqe->ud, 8, destination_qp, av->dest_qp );
|
||
|
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, hermon->reserved_lkey );
|
||
|
MLX_FILL_1 ( &wqe->data[0], 3,
|
||
|
local_address_l, virt_to_bus ( iobuf->data ) );
|
||
|
barrier();
|
||
|
MLX_FILL_2 ( &wqe->ctrl, 0,
|
||
|
opcode, HERMON_OPCODE_SEND,
|
||
|
owner,
|
||
|
( ( wq->next_idx & hermon_send_wq->num_wqes ) ? 1 : 0 ) );
|
||
|
DBGCP ( hermon, "Hermon %p posting send WQE:\n", hermon );
|
||
|
DBGCP_HD ( hermon, wqe, sizeof ( *wqe ) );
|
||
|
barrier();
|
||
|
|
||
|
/* Ring doorbell register */
|
||
|
MLX_FILL_1 ( &db_reg.send, 0, qn, qp->qpn );
|
||
|
DBGCP ( hermon, "Ringing doorbell %08lx with %08lx\n",
|
||
|
virt_to_phys ( hermon->uar + HERMON_DB_POST_SND_OFFSET ),
|
||
|
db_reg.dword[0] );
|
||
|
writel ( db_reg.dword[0], ( hermon->uar + HERMON_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 hermon_post_recv ( struct ib_device *ibdev,
|
||
|
struct ib_queue_pair *qp,
|
||
|
struct io_buffer *iobuf ) {
|
||
|
struct hermon *hermon = ibdev->dev_priv;
|
||
|
struct hermon_queue_pair *hermon_qp = qp->dev_priv;
|
||
|
struct ib_work_queue *wq = &qp->recv;
|
||
|
struct hermon_recv_work_queue *hermon_recv_wq = &hermon_qp->recv;
|
||
|
struct hermonprm_recv_wqe *wqe;
|
||
|
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 ( hermon, "Hermon %p receive queue full", hermon );
|
||
|
return -ENOBUFS;
|
||
|
}
|
||
|
wq->iobufs[wq->next_idx & wqe_idx_mask] = iobuf;
|
||
|
wqe = &hermon_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, hermon->reserved_lkey );
|
||
|
MLX_FILL_1 ( &wqe->data[0], 3,
|
||
|
local_address_l, virt_to_bus ( iobuf->data ) );
|
||
|
|
||
|
/* Update work queue's index */
|
||
|
wq->next_idx++;
|
||
|
|
||
|
/* Update doorbell record */
|
||
|
barrier();
|
||
|
MLX_FILL_1 ( &hermon_recv_wq->doorbell, 0, receive_wqe_counter,
|
||
|
( wq->next_idx & 0xffff ) );
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Handle completion
|
||
|
*
|
||
|
* @v ibdev Infiniband device
|
||
|
* @v cq Completion queue
|
||
|
* @v cqe Hardware completion queue entry
|
||
|
* @v complete_send Send completion handler
|
||
|
* @v complete_recv Receive completion handler
|
||
|
* @ret rc Return status code
|
||
|
*/
|
||
|
static int hermon_complete ( struct ib_device *ibdev,
|
||
|
struct ib_completion_queue *cq,
|
||
|
union hermonprm_completion_entry *cqe,
|
||
|
ib_completer_t complete_send,
|
||
|
ib_completer_t complete_recv ) {
|
||
|
struct hermon *hermon = ibdev->dev_priv;
|
||
|
struct ib_completion completion;
|
||
|
struct ib_work_queue *wq;
|
||
|
struct ib_queue_pair *qp;
|
||
|
struct hermon_queue_pair *hermon_qp;
|
||
|
struct io_buffer *iobuf;
|
||
|
ib_completer_t complete;
|
||
|
unsigned int opcode;
|
||
|
unsigned long qpn;
|
||
|
int is_send;
|
||
|
unsigned int wqe_idx;
|
||
|
int rc = 0;
|
||
|
|
||
|
/* Parse completion */
|
||
|
memset ( &completion, 0, sizeof ( completion ) );
|
||
|
qpn = MLX_GET ( &cqe->normal, qpn );
|
||
|
is_send = MLX_GET ( &cqe->normal, s_r );
|
||
|
opcode = MLX_GET ( &cqe->normal, opcode );
|
||
|
if ( opcode >= HERMON_OPCODE_RECV_ERROR ) {
|
||
|
/* "s" field is not valid for error opcodes */
|
||
|
is_send = ( opcode == HERMON_OPCODE_SEND_ERROR );
|
||
|
completion.syndrome = MLX_GET ( &cqe->error, syndrome );
|
||
|
DBGC ( hermon, "Hermon %p CQN %lx syndrome %x vendor %lx\n",
|
||
|
hermon, cq->cqn, completion.syndrome,
|
||
|
MLX_GET ( &cqe->error, vendor_error_syndrome ) );
|
||
|
rc = -EIO;
|
||
|
/* Don't return immediately; propagate error to completer */
|
||
|
}
|
||
|
|
||
|
/* Identify work queue */
|
||
|
wq = ib_find_wq ( cq, qpn, is_send );
|
||
|
if ( ! wq ) {
|
||
|
DBGC ( hermon, "Hermon %p CQN %lx unknown %s QPN %lx\n",
|
||
|
hermon, cq->cqn, ( is_send ? "send" : "recv" ), qpn );
|
||
|
return -EIO;
|
||
|
}
|
||
|
qp = wq->qp;
|
||
|
hermon_qp = qp->dev_priv;
|
||
|
|
||
|
/* Identify I/O buffer */
|
||
|
wqe_idx = ( MLX_GET ( &cqe->normal, wqe_counter ) &
|
||
|
( wq->num_wqes - 1 ) );
|
||
|
iobuf = wq->iobufs[wqe_idx];
|
||
|
if ( ! iobuf ) {
|
||
|
DBGC ( hermon, "Hermon %p CQN %lx QPN %lx empty WQE %x\n",
|
||
|
hermon, cq->cqn, qpn, wqe_idx );
|
||
|
return -EIO;
|
||
|
}
|
||
|
wq->iobufs[wqe_idx] = NULL;
|
||
|
|
||
|
/* Fill in length for received packets */
|
||
|
if ( ! is_send ) {
|
||
|
completion.len = MLX_GET ( &cqe->normal, byte_cnt );
|
||
|
if ( completion.len > iob_tailroom ( iobuf ) ) {
|
||
|
DBGC ( hermon, "Hermon %p CQN %lx QPN %lx IDX %x "
|
||
|
"overlength received packet length %zd\n",
|
||
|
hermon, cq->cqn, qpn, wqe_idx, completion.len );
|
||
|
return -EIO;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* Pass off to caller's completion handler */
|
||
|
complete = ( is_send ? complete_send : complete_recv );
|
||
|
complete ( ibdev, qp, &completion, iobuf );
|
||
|
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Poll completion queue
|
||
|
*
|
||
|
* @v ibdev Infiniband device
|
||
|
* @v cq Completion queue
|
||
|
* @v complete_send Send completion handler
|
||
|
* @v complete_recv Receive completion handler
|
||
|
*/
|
||
|
static void hermon_poll_cq ( struct ib_device *ibdev,
|
||
|
struct ib_completion_queue *cq,
|
||
|
ib_completer_t complete_send,
|
||
|
ib_completer_t complete_recv ) {
|
||
|
struct hermon *hermon = ibdev->dev_priv;
|
||
|
struct hermon_completion_queue *hermon_cq = cq->dev_priv;
|
||
|
union hermonprm_completion_entry *cqe;
|
||
|
unsigned int cqe_idx_mask;
|
||
|
int rc;
|
||
|
|
||
|
while ( 1 ) {
|
||
|
/* Look for completion entry */
|
||
|
cqe_idx_mask = ( cq->num_cqes - 1 );
|
||
|
cqe = &hermon_cq->cqe[cq->next_idx & cqe_idx_mask];
|
||
|
if ( MLX_GET ( &cqe->normal, owner ) ^
|
||
|
( ( cq->next_idx & cq->num_cqes ) ? 1 : 0 ) ) {
|
||
|
/* Entry still owned by hardware; end of poll */
|
||
|
break;
|
||
|
}
|
||
|
DBGCP ( hermon, "Hermon %p completion:\n", hermon );
|
||
|
DBGCP_HD ( hermon, cqe, sizeof ( *cqe ) );
|
||
|
|
||
|
/* Handle completion */
|
||
|
if ( ( rc = hermon_complete ( ibdev, cq, cqe, complete_send,
|
||
|
complete_recv ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p failed to complete: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
DBGC_HD ( hermon, cqe, sizeof ( *cqe ) );
|
||
|
}
|
||
|
|
||
|
/* Update completion queue's index */
|
||
|
cq->next_idx++;
|
||
|
|
||
|
/* Update doorbell record */
|
||
|
MLX_FILL_1 ( &hermon_cq->doorbell, 0, update_ci,
|
||
|
( cq->next_idx & 0xffffffUL ) );
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/***************************************************************************
|
||
|
*
|
||
|
* 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 hermon_mcast_attach ( struct ib_device *ibdev,
|
||
|
struct ib_queue_pair *qp,
|
||
|
struct ib_gid *gid ) {
|
||
|
struct hermon *hermon = ibdev->dev_priv;
|
||
|
struct hermonprm_mgm_hash hash;
|
||
|
struct hermonprm_mcg_entry mcg;
|
||
|
unsigned int index;
|
||
|
int rc;
|
||
|
|
||
|
/* Generate hash table index */
|
||
|
if ( ( rc = hermon_cmd_mgid_hash ( hermon, gid, &hash ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not hash GID: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
return rc;
|
||
|
}
|
||
|
index = MLX_GET ( &hash, hash );
|
||
|
|
||
|
/* Check for existing hash table entry */
|
||
|
if ( ( rc = hermon_cmd_read_mcg ( hermon, index, &mcg ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not read MCG %#x: %s\n",
|
||
|
hermon, index, strerror ( rc ) );
|
||
|
return rc;
|
||
|
}
|
||
|
if ( MLX_GET ( &mcg, hdr.members_count ) != 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 ( hermon, "Hermon %p MGID index %#x already in use\n",
|
||
|
hermon, index );
|
||
|
return -EBUSY;
|
||
|
}
|
||
|
|
||
|
/* Update hash table entry */
|
||
|
MLX_FILL_1 ( &mcg, 1, hdr.members_count, 1 );
|
||
|
MLX_FILL_1 ( &mcg, 8, qp[0].qpn, qp->qpn );
|
||
|
memcpy ( &mcg.u.dwords[4], gid, sizeof ( *gid ) );
|
||
|
if ( ( rc = hermon_cmd_write_mcg ( hermon, index, &mcg ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not write MCG %#x: %s\n",
|
||
|
hermon, 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 hermon_mcast_detach ( struct ib_device *ibdev,
|
||
|
struct ib_queue_pair *qp __unused,
|
||
|
struct ib_gid *gid ) {
|
||
|
struct hermon *hermon = ibdev->dev_priv;
|
||
|
struct hermonprm_mgm_hash hash;
|
||
|
struct hermonprm_mcg_entry mcg;
|
||
|
unsigned int index;
|
||
|
int rc;
|
||
|
|
||
|
/* Generate hash table index */
|
||
|
if ( ( rc = hermon_cmd_mgid_hash ( hermon, gid, &hash ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not hash GID: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
return;
|
||
|
}
|
||
|
index = MLX_GET ( &hash, hash );
|
||
|
|
||
|
/* Clear hash table entry */
|
||
|
memset ( &mcg, 0, sizeof ( mcg ) );
|
||
|
if ( ( rc = hermon_cmd_write_mcg ( hermon, index, &mcg ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not write MCG %#x: %s\n",
|
||
|
hermon, index, strerror ( rc ) );
|
||
|
return;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/** Hermon Infiniband operations */
|
||
|
static struct ib_device_operations hermon_ib_operations = {
|
||
|
.create_cq = hermon_create_cq,
|
||
|
.destroy_cq = hermon_destroy_cq,
|
||
|
.create_qp = hermon_create_qp,
|
||
|
.destroy_qp = hermon_destroy_qp,
|
||
|
.post_send = hermon_post_send,
|
||
|
.post_recv = hermon_post_recv,
|
||
|
.poll_cq = hermon_poll_cq,
|
||
|
.mcast_attach = hermon_mcast_attach,
|
||
|
.mcast_detach = hermon_mcast_detach,
|
||
|
};
|
||
|
|
||
|
/***************************************************************************
|
||
|
*
|
||
|
* MAD IFC operations
|
||
|
*
|
||
|
***************************************************************************
|
||
|
*/
|
||
|
|
||
|
static int hermon_mad_ifc ( struct hermon *hermon,
|
||
|
union hermonprm_mad *mad ) {
|
||
|
struct ib_mad_hdr *hdr = &mad->mad.mad_hdr;
|
||
|
int rc;
|
||
|
|
||
|
hdr->base_version = IB_MGMT_BASE_VERSION;
|
||
|
if ( ( rc = hermon_cmd_mad_ifc ( hermon, mad ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not issue MAD IFC: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
return rc;
|
||
|
}
|
||
|
if ( hdr->status != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p MAD IFC status %04x\n",
|
||
|
hermon, ntohs ( hdr->status ) );
|
||
|
return -EIO;
|
||
|
}
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int hermon_get_port_info ( struct hermon *hermon,
|
||
|
struct ib_mad_port_info *port_info ) {
|
||
|
union hermonprm_mad mad;
|
||
|
struct ib_mad_hdr *hdr = &mad.mad.mad_hdr;
|
||
|
int rc;
|
||
|
|
||
|
memset ( &mad, 0, sizeof ( mad ) );
|
||
|
hdr->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
|
||
|
hdr->class_version = 1;
|
||
|
hdr->method = IB_MGMT_METHOD_GET;
|
||
|
hdr->attr_id = htons ( IB_SMP_ATTR_PORT_INFO );
|
||
|
hdr->attr_mod = htonl ( PXE_IB_PORT );
|
||
|
if ( ( rc = hermon_mad_ifc ( hermon, &mad ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not get port info: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
return rc;
|
||
|
}
|
||
|
memcpy ( port_info, &mad.mad.port_info, sizeof ( *port_info ) );
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int hermon_get_guid_info ( struct hermon *hermon,
|
||
|
struct ib_mad_guid_info *guid_info ) {
|
||
|
union hermonprm_mad mad;
|
||
|
struct ib_mad_hdr *hdr = &mad.mad.mad_hdr;
|
||
|
int rc;
|
||
|
|
||
|
memset ( &mad, 0, sizeof ( mad ) );
|
||
|
hdr->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
|
||
|
hdr->class_version = 1;
|
||
|
hdr->method = IB_MGMT_METHOD_GET;
|
||
|
hdr->attr_id = htons ( IB_SMP_ATTR_GUID_INFO );
|
||
|
if ( ( rc = hermon_mad_ifc ( hermon, &mad ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not get GUID info: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
return rc;
|
||
|
}
|
||
|
memcpy ( guid_info, &mad.mad.guid_info, sizeof ( *guid_info ) );
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int hermon_get_pkey_table ( struct hermon *hermon,
|
||
|
struct ib_mad_pkey_table *pkey_table ) {
|
||
|
union hermonprm_mad mad;
|
||
|
struct ib_mad_hdr *hdr = &mad.mad.mad_hdr;
|
||
|
int rc;
|
||
|
|
||
|
memset ( &mad, 0, sizeof ( mad ) );
|
||
|
hdr->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
|
||
|
hdr->class_version = 1;
|
||
|
hdr->method = IB_MGMT_METHOD_GET;
|
||
|
hdr->attr_id = htons ( IB_SMP_ATTR_PKEY_TABLE );
|
||
|
if ( ( rc = hermon_mad_ifc ( hermon, &mad ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not get pkey table: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
return rc;
|
||
|
}
|
||
|
memcpy ( pkey_table, &mad.mad.pkey_table, sizeof ( *pkey_table ) );
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int hermon_get_port_gid ( struct hermon *hermon,
|
||
|
struct ib_gid *port_gid ) {
|
||
|
union {
|
||
|
/* This union exists just to save stack space */
|
||
|
struct ib_mad_port_info port_info;
|
||
|
struct ib_mad_guid_info guid_info;
|
||
|
} u;
|
||
|
int rc;
|
||
|
|
||
|
/* Port info gives us the first half of the port GID */
|
||
|
if ( ( rc = hermon_get_port_info ( hermon, &u.port_info ) ) != 0 )
|
||
|
return rc;
|
||
|
memcpy ( &port_gid->u.bytes[0], u.port_info.gid_prefix, 8 );
|
||
|
|
||
|
/* GUID info gives us the second half of the port GID */
|
||
|
if ( ( rc = hermon_get_guid_info ( hermon, &u.guid_info ) ) != 0 )
|
||
|
return rc;
|
||
|
memcpy ( &port_gid->u.bytes[8], u.guid_info.gid_local, 8 );
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int hermon_get_sm_lid ( struct hermon *hermon,
|
||
|
unsigned long *sm_lid ) {
|
||
|
struct ib_mad_port_info port_info;
|
||
|
int rc;
|
||
|
|
||
|
if ( ( rc = hermon_get_port_info ( hermon, &port_info ) ) != 0 )
|
||
|
return rc;
|
||
|
*sm_lid = ntohs ( port_info.mastersm_lid );
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int hermon_get_pkey ( struct hermon *hermon, unsigned int *pkey ) {
|
||
|
struct ib_mad_pkey_table pkey_table;
|
||
|
int rc;
|
||
|
|
||
|
if ( ( rc = hermon_get_pkey_table ( hermon, &pkey_table ) ) != 0 )
|
||
|
return rc;
|
||
|
*pkey = ntohs ( pkey_table.pkey[0][0] );
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Wait for link up
|
||
|
*
|
||
|
* @v hermon Hermon device
|
||
|
* @ret rc Return status code
|
||
|
*
|
||
|
* This function shouldn't really exist. Unfortunately, IB links take
|
||
|
* a long time to come up, and we can't get various key parameters
|
||
|
* e.g. our own IPoIB MAC address without information from the subnet
|
||
|
* manager). We should eventually make link-up an asynchronous event.
|
||
|
*/
|
||
|
static int hermon_wait_for_link ( struct hermon *hermon ) {
|
||
|
struct ib_mad_port_info port_info;
|
||
|
unsigned int retries;
|
||
|
int rc;
|
||
|
|
||
|
printf ( "Waiting for Infiniband link-up..." );
|
||
|
for ( retries = 20 ; retries ; retries-- ) {
|
||
|
if ( ( rc = hermon_get_port_info ( hermon,
|
||
|
&port_info ) ) != 0 )
|
||
|
continue;
|
||
|
if ( ( ( port_info.port_state__link_speed_supported ) & 0xf )
|
||
|
== 4 ) {
|
||
|
printf ( "ok\n" );
|
||
|
return 0;
|
||
|
}
|
||
|
printf ( "." );
|
||
|
sleep ( 1 );
|
||
|
}
|
||
|
printf ( "failed\n" );
|
||
|
return -ENODEV;
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Get MAD parameters
|
||
|
*
|
||
|
* @v hermon Hermon device
|
||
|
* @ret rc Return status code
|
||
|
*/
|
||
|
static int hermon_get_mad_params ( struct ib_device *ibdev ) {
|
||
|
struct hermon *hermon = ibdev->dev_priv;
|
||
|
int rc;
|
||
|
|
||
|
/* Get subnet manager LID */
|
||
|
if ( ( rc = hermon_get_sm_lid ( hermon, &ibdev->sm_lid ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not determine subnet manager "
|
||
|
"LID: %s\n", hermon, strerror ( rc ) );
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
/* Get port GID */
|
||
|
if ( ( rc = hermon_get_port_gid ( hermon, &ibdev->port_gid ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not determine port GID: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
/* Get partition key */
|
||
|
if ( ( rc = hermon_get_pkey ( hermon, &ibdev->pkey ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not determine partition key: "
|
||
|
"%s\n", hermon, strerror ( rc ) );
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/***************************************************************************
|
||
|
*
|
||
|
* Firmware control
|
||
|
*
|
||
|
***************************************************************************
|
||
|
*/
|
||
|
|
||
|
/**
|
||
|
* Start firmware running
|
||
|
*
|
||
|
* @v hermon Hermon device
|
||
|
* @ret rc Return status code
|
||
|
*/
|
||
|
static int hermon_start_firmware ( struct hermon *hermon ) {
|
||
|
struct hermonprm_query_fw fw;
|
||
|
struct hermonprm_virtual_physical_mapping map_fa;
|
||
|
unsigned int fw_pages;
|
||
|
unsigned int log2_fw_pages;
|
||
|
size_t fw_size;
|
||
|
physaddr_t fw_base;
|
||
|
int rc;
|
||
|
|
||
|
/* Get firmware parameters */
|
||
|
if ( ( rc = hermon_cmd_query_fw ( hermon, &fw ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not query firmware: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
goto err_query_fw;
|
||
|
}
|
||
|
DBGC ( hermon, "Hermon %p firmware version %ld.%ld.%ld\n", hermon,
|
||
|
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 ( hermon, "Hermon %p requires %d kB for firmware\n",
|
||
|
hermon, ( fw_pages * 4 ) );
|
||
|
|
||
|
/* Allocate firmware pages and map firmware area */
|
||
|
fw_size = ( fw_pages * HERMON_PAGE_SIZE );
|
||
|
hermon->firmware_area = umalloc ( fw_size );
|
||
|
if ( ! hermon->firmware_area ) {
|
||
|
rc = -ENOMEM;
|
||
|
goto err_alloc_fa;
|
||
|
}
|
||
|
fw_base = ( user_to_phys ( hermon->firmware_area, fw_size ) &
|
||
|
~( fw_size - 1 ) );
|
||
|
DBGC ( hermon, "Hermon %p firmware area at physical [%lx,%lx)\n",
|
||
|
hermon, 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 = hermon_cmd_map_fa ( hermon, &map_fa ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not map firmware: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
goto err_map_fa;
|
||
|
}
|
||
|
|
||
|
/* Start firmware */
|
||
|
if ( ( rc = hermon_cmd_run_fw ( hermon ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not run firmware: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
goto err_run_fw;
|
||
|
}
|
||
|
|
||
|
DBGC ( hermon, "Hermon %p firmware started\n", hermon );
|
||
|
return 0;
|
||
|
|
||
|
err_run_fw:
|
||
|
hermon_cmd_unmap_fa ( hermon );
|
||
|
err_map_fa:
|
||
|
ufree ( hermon->firmware_area );
|
||
|
hermon->firmware_area = UNULL;
|
||
|
err_alloc_fa:
|
||
|
err_query_fw:
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Stop firmware running
|
||
|
*
|
||
|
* @v hermon Hermon device
|
||
|
*/
|
||
|
static void hermon_stop_firmware ( struct hermon *hermon ) {
|
||
|
int rc;
|
||
|
|
||
|
if ( ( rc = hermon_cmd_unmap_fa ( hermon ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p FATAL could not stop firmware: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
/* Leak memory and return; at least we avoid corruption */
|
||
|
return;
|
||
|
}
|
||
|
ufree ( hermon->firmware_area );
|
||
|
hermon->firmware_area = UNULL;
|
||
|
}
|
||
|
|
||
|
/***************************************************************************
|
||
|
*
|
||
|
* Infinihost Context Memory management
|
||
|
*
|
||
|
***************************************************************************
|
||
|
*/
|
||
|
|
||
|
/**
|
||
|
* Get device limits
|
||
|
*
|
||
|
* @v hermon Hermon device
|
||
|
* @ret rc Return status code
|
||
|
*/
|
||
|
static int hermon_get_cap ( struct hermon *hermon ) {
|
||
|
struct hermonprm_query_dev_cap dev_cap;
|
||
|
int rc;
|
||
|
|
||
|
if ( ( rc = hermon_cmd_query_dev_cap ( hermon, &dev_cap ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not get device limits: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
hermon->cap.cmpt_entry_size = MLX_GET ( &dev_cap, c_mpt_entry_sz );
|
||
|
hermon->cap.reserved_qps =
|
||
|
( 1 << MLX_GET ( &dev_cap, log2_rsvd_qps ) );
|
||
|
hermon->cap.qpc_entry_size = MLX_GET ( &dev_cap, qpc_entry_sz );
|
||
|
hermon->cap.altc_entry_size = MLX_GET ( &dev_cap, altc_entry_sz );
|
||
|
hermon->cap.auxc_entry_size = MLX_GET ( &dev_cap, aux_entry_sz );
|
||
|
hermon->cap.reserved_srqs =
|
||
|
( 1 << MLX_GET ( &dev_cap, log2_rsvd_srqs ) );
|
||
|
hermon->cap.srqc_entry_size = MLX_GET ( &dev_cap, srq_entry_sz );
|
||
|
hermon->cap.reserved_cqs =
|
||
|
( 1 << MLX_GET ( &dev_cap, log2_rsvd_cqs ) );
|
||
|
hermon->cap.cqc_entry_size = MLX_GET ( &dev_cap, cqc_entry_sz );
|
||
|
hermon->cap.reserved_eqs = MLX_GET ( &dev_cap, num_rsvd_eqs );
|
||
|
hermon->cap.eqc_entry_size = MLX_GET ( &dev_cap, eqc_entry_sz );
|
||
|
hermon->cap.reserved_mtts =
|
||
|
( 1 << MLX_GET ( &dev_cap, log2_rsvd_mtts ) );
|
||
|
hermon->cap.mtt_entry_size = MLX_GET ( &dev_cap, mtt_entry_sz );
|
||
|
hermon->cap.reserved_mrws =
|
||
|
( 1 << MLX_GET ( &dev_cap, log2_rsvd_mrws ) );
|
||
|
hermon->cap.dmpt_entry_size = MLX_GET ( &dev_cap, d_mpt_entry_sz );
|
||
|
hermon->cap.reserved_uars = MLX_GET ( &dev_cap, 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 + HERMON_PAGE_SIZE - 1 ) &
|
||
|
~( HERMON_PAGE_SIZE - 1 ) );
|
||
|
return usage;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Allocate ICM
|
||
|
*
|
||
|
* @v hermon Hermon device
|
||
|
* @v init_hca INIT_HCA structure to fill in
|
||
|
* @ret rc Return status code
|
||
|
*/
|
||
|
static int hermon_alloc_icm ( struct hermon *hermon,
|
||
|
struct hermonprm_init_hca *init_hca ) {
|
||
|
struct hermonprm_scalar_parameter icm_size;
|
||
|
struct hermonprm_scalar_parameter icm_aux_size;
|
||
|
struct hermonprm_virtual_physical_mapping map_icm_aux;
|
||
|
struct hermonprm_virtual_physical_mapping map_icm;
|
||
|
uint64_t icm_offset = 0;
|
||
|
unsigned int log_num_qps, log_num_srqs, log_num_cqs, log_num_eqs;
|
||
|
unsigned int log_num_mtts, log_num_mpts;
|
||
|
size_t cmpt_max_len;
|
||
|
size_t qp_cmpt_len, srq_cmpt_len, cq_cmpt_len, eq_cmpt_len;
|
||
|
size_t icm_len, icm_aux_len;
|
||
|
physaddr_t icm_phys;
|
||
|
int i;
|
||
|
int rc;
|
||
|
|
||
|
/*
|
||
|
* Start by carving up the ICM virtual address space
|
||
|
*
|
||
|
*/
|
||
|
|
||
|
/* Calculate number of each object type within ICM */
|
||
|
log_num_qps = fls ( hermon->cap.reserved_qps + HERMON_MAX_QPS - 1 );
|
||
|
log_num_srqs = fls ( hermon->cap.reserved_srqs - 1 );
|
||
|
log_num_cqs = fls ( hermon->cap.reserved_cqs + HERMON_MAX_CQS - 1 );
|
||
|
log_num_eqs = fls ( hermon->cap.reserved_eqs + HERMON_MAX_EQS - 1 );
|
||
|
log_num_mtts = fls ( hermon->cap.reserved_mtts + HERMON_MAX_MTTS - 1 );
|
||
|
|
||
|
/* ICM starts with the cMPT tables, which are sparse */
|
||
|
cmpt_max_len = ( HERMON_CMPT_MAX_ENTRIES *
|
||
|
( ( uint64_t ) hermon->cap.cmpt_entry_size ) );
|
||
|
qp_cmpt_len = icm_usage ( log_num_qps, hermon->cap.cmpt_entry_size );
|
||
|
hermon->icm_map[HERMON_ICM_QP_CMPT].offset = icm_offset;
|
||
|
hermon->icm_map[HERMON_ICM_QP_CMPT].len = qp_cmpt_len;
|
||
|
icm_offset += cmpt_max_len;
|
||
|
srq_cmpt_len = icm_usage ( log_num_srqs, hermon->cap.cmpt_entry_size );
|
||
|
hermon->icm_map[HERMON_ICM_SRQ_CMPT].offset = icm_offset;
|
||
|
hermon->icm_map[HERMON_ICM_SRQ_CMPT].len = srq_cmpt_len;
|
||
|
icm_offset += cmpt_max_len;
|
||
|
cq_cmpt_len = icm_usage ( log_num_cqs, hermon->cap.cmpt_entry_size );
|
||
|
hermon->icm_map[HERMON_ICM_CQ_CMPT].offset = icm_offset;
|
||
|
hermon->icm_map[HERMON_ICM_CQ_CMPT].len = cq_cmpt_len;
|
||
|
icm_offset += cmpt_max_len;
|
||
|
eq_cmpt_len = icm_usage ( log_num_eqs, hermon->cap.cmpt_entry_size );
|
||
|
hermon->icm_map[HERMON_ICM_EQ_CMPT].offset = icm_offset;
|
||
|
hermon->icm_map[HERMON_ICM_EQ_CMPT].len = eq_cmpt_len;
|
||
|
icm_offset += cmpt_max_len;
|
||
|
|
||
|
hermon->icm_map[HERMON_ICM_OTHER].offset = icm_offset;
|
||
|
|
||
|
/* Queue pair contexts */
|
||
|
MLX_FILL_1 ( init_hca, 12,
|
||
|
qpc_eec_cqc_eqc_rdb_parameters.qpc_base_addr_h,
|
||
|
( icm_offset >> 32 ) );
|
||
|
MLX_FILL_2 ( init_hca, 13,
|
||
|
qpc_eec_cqc_eqc_rdb_parameters.qpc_base_addr_l,
|
||
|
( icm_offset >> 5 ),
|
||
|
qpc_eec_cqc_eqc_rdb_parameters.log_num_of_qp,
|
||
|
log_num_qps );
|
||
|
DBGC ( hermon, "Hermon %p ICM QPC base = %llx\n", hermon, icm_offset );
|
||
|
icm_offset += icm_usage ( log_num_qps, hermon->cap.qpc_entry_size );
|
||
|
|
||
|
/* Extended alternate path contexts */
|
||
|
MLX_FILL_1 ( init_hca, 24,
|
||
|
qpc_eec_cqc_eqc_rdb_parameters.altc_base_addr_h,
|
||
|
( icm_offset >> 32 ) );
|
||
|
MLX_FILL_1 ( init_hca, 25,
|
||
|
qpc_eec_cqc_eqc_rdb_parameters.altc_base_addr_l,
|
||
|
icm_offset );
|
||
|
DBGC ( hermon, "Hermon %p ICM ALTC base = %llx\n", hermon, icm_offset);
|
||
|
icm_offset += icm_usage ( log_num_qps,
|
||
|
hermon->cap.altc_entry_size );
|
||
|
|
||
|
/* Extended auxiliary contexts */
|
||
|
MLX_FILL_1 ( init_hca, 28,
|
||
|
qpc_eec_cqc_eqc_rdb_parameters.auxc_base_addr_h,
|
||
|
( icm_offset >> 32 ) );
|
||
|
MLX_FILL_1 ( init_hca, 29,
|
||
|
qpc_eec_cqc_eqc_rdb_parameters.auxc_base_addr_l,
|
||
|
icm_offset );
|
||
|
DBGC ( hermon, "Hermon %p ICM AUXC base = %llx\n", hermon, icm_offset);
|
||
|
icm_offset += icm_usage ( log_num_qps,
|
||
|
hermon->cap.auxc_entry_size );
|
||
|
|
||
|
/* Shared receive queue contexts */
|
||
|
MLX_FILL_1 ( init_hca, 18,
|
||
|
qpc_eec_cqc_eqc_rdb_parameters.srqc_base_addr_h,
|
||
|
( icm_offset >> 32 ) );
|
||
|
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 ( hermon, "Hermon %p ICM SRQC base = %llx\n", hermon, icm_offset);
|
||
|
icm_offset += icm_usage ( log_num_srqs,
|
||
|
hermon->cap.srqc_entry_size );
|
||
|
|
||
|
/* Completion queue contexts */
|
||
|
MLX_FILL_1 ( init_hca, 20,
|
||
|
qpc_eec_cqc_eqc_rdb_parameters.cqc_base_addr_h,
|
||
|
( icm_offset >> 32 ) );
|
||
|
MLX_FILL_2 ( init_hca, 21,
|
||
|
qpc_eec_cqc_eqc_rdb_parameters.cqc_base_addr_l,
|
||
|
( icm_offset >> 5 ),
|
||
|
qpc_eec_cqc_eqc_rdb_parameters.log_num_of_cq,
|
||
|
log_num_cqs );
|
||
|
DBGC ( hermon, "Hermon %p ICM CQC base = %llx\n", hermon, icm_offset );
|
||
|
icm_offset += icm_usage ( log_num_cqs, hermon->cap.cqc_entry_size );
|
||
|
|
||
|
/* Event queue contexts */
|
||
|
MLX_FILL_1 ( init_hca, 32,
|
||
|
qpc_eec_cqc_eqc_rdb_parameters.eqc_base_addr_h,
|
||
|
( icm_offset >> 32 ) );
|
||
|
MLX_FILL_2 ( init_hca, 33,
|
||
|
qpc_eec_cqc_eqc_rdb_parameters.eqc_base_addr_l,
|
||
|
( icm_offset >> 5 ),
|
||
|
qpc_eec_cqc_eqc_rdb_parameters.log_num_of_eq,
|
||
|
log_num_eqs );
|
||
|
DBGC ( hermon, "Hermon %p ICM EQC base = %llx\n", hermon, icm_offset );
|
||
|
icm_offset += icm_usage ( log_num_eqs, hermon->cap.eqc_entry_size );
|
||
|
|
||
|
/* Memory translation table */
|
||
|
MLX_FILL_1 ( init_hca, 64,
|
||
|
tpt_parameters.mtt_base_addr_h, ( icm_offset >> 32 ) );
|
||
|
MLX_FILL_1 ( init_hca, 65,
|
||
|
tpt_parameters.mtt_base_addr_l, icm_offset );
|
||
|
DBGC ( hermon, "Hermon %p ICM MTT base = %llx\n", hermon, icm_offset );
|
||
|
icm_offset += icm_usage ( log_num_mtts,
|
||
|
hermon->cap.mtt_entry_size );
|
||
|
|
||
|
/* Memory protection table */
|
||
|
log_num_mpts = fls ( hermon->cap.reserved_mrws + 1 - 1 );
|
||
|
MLX_FILL_1 ( init_hca, 60,
|
||
|
tpt_parameters.dmpt_base_adr_h, ( icm_offset >> 32 ) );
|
||
|
MLX_FILL_1 ( init_hca, 61,
|
||
|
tpt_parameters.dmpt_base_adr_l, icm_offset );
|
||
|
MLX_FILL_1 ( init_hca, 62,
|
||
|
tpt_parameters.log_dmpt_sz, log_num_mpts );
|
||
|
DBGC ( hermon, "Hermon %p ICM DMPT base = %llx\n", hermon, icm_offset);
|
||
|
icm_offset += icm_usage ( log_num_mpts,
|
||
|
hermon->cap.dmpt_entry_size );
|
||
|
|
||
|
/* Multicast table */
|
||
|
MLX_FILL_1 ( init_hca, 48,
|
||
|
multicast_parameters.mc_base_addr_h,
|
||
|
( icm_offset >> 32 ) );
|
||
|
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 hermonprm_mcg_entry ) - 1 ) );
|
||
|
MLX_FILL_1 ( init_hca, 53,
|
||
|
multicast_parameters.log_mc_table_hash_sz, 3 );
|
||
|
MLX_FILL_1 ( init_hca, 54,
|
||
|
multicast_parameters.log_mc_table_sz, 3 );
|
||
|
DBGC ( hermon, "Hermon %p ICM MC base = %llx\n", hermon, icm_offset );
|
||
|
icm_offset += ( ( 8 * sizeof ( struct hermonprm_mcg_entry ) +
|
||
|
HERMON_PAGE_SIZE - 1 ) & ~( HERMON_PAGE_SIZE - 1 ) );
|
||
|
|
||
|
hermon->icm_map[HERMON_ICM_OTHER].len =
|
||
|
( icm_offset - hermon->icm_map[HERMON_ICM_OTHER].offset );
|
||
|
|
||
|
/*
|
||
|
* Allocate and map physical memory for (portions of) ICM
|
||
|
*
|
||
|
* Map is:
|
||
|
* ICM AUX area (aligned to its own size)
|
||
|
* cMPT areas
|
||
|
* Other areas
|
||
|
*/
|
||
|
|
||
|
/* Calculate physical memory required for ICM */
|
||
|
icm_len = 0;
|
||
|
for ( i = 0 ; i < HERMON_ICM_NUM_REGIONS ; i++ ) {
|
||
|
icm_len += hermon->icm_map[i].len;
|
||
|
}
|
||
|
|
||
|
/* Get ICM auxiliary area size */
|
||
|
memset ( &icm_size, 0, sizeof ( icm_size ) );
|
||
|
MLX_FILL_1 ( &icm_size, 0, value_hi, ( icm_offset >> 32 ) );
|
||
|
MLX_FILL_1 ( &icm_size, 1, value, icm_offset );
|
||
|
if ( ( rc = hermon_cmd_set_icm_size ( hermon, &icm_size,
|
||
|
&icm_aux_size ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not set ICM size: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
goto err_set_icm_size;
|
||
|
}
|
||
|
icm_aux_len = ( MLX_GET ( &icm_aux_size, value ) * HERMON_PAGE_SIZE );
|
||
|
/* Must round up to nearest power of two :( */
|
||
|
icm_aux_len = ( 1 << fls ( icm_aux_len - 1 ) );
|
||
|
|
||
|
/* Allocate ICM data and auxiliary area */
|
||
|
DBGC ( hermon, "Hermon %p requires %zd kB ICM and %zd kB AUX ICM\n",
|
||
|
hermon, ( icm_len / 1024 ), ( icm_aux_len / 1024 ) );
|
||
|
hermon->icm = umalloc ( 2 * icm_aux_len + icm_len );
|
||
|
if ( ! hermon->icm ) {
|
||
|
rc = -ENOMEM;
|
||
|
goto err_alloc;
|
||
|
}
|
||
|
icm_phys = user_to_phys ( hermon->icm, 0 );
|
||
|
|
||
|
/* Map ICM auxiliary area */
|
||
|
icm_phys = ( ( icm_phys + icm_aux_len - 1 ) & ~( icm_aux_len - 1 ) );
|
||
|
memset ( &map_icm_aux, 0, sizeof ( map_icm_aux ) );
|
||
|
MLX_FILL_2 ( &map_icm_aux, 3,
|
||
|
log2size, fls ( ( icm_aux_len / HERMON_PAGE_SIZE ) - 1 ),
|
||
|
pa_l, ( icm_phys >> 12 ) );
|
||
|
DBGC ( hermon, "Hermon %p mapping ICM AUX (2^%d pages) => %08lx\n",
|
||
|
hermon, fls ( ( icm_aux_len / HERMON_PAGE_SIZE ) - 1 ),
|
||
|
icm_phys );
|
||
|
if ( ( rc = hermon_cmd_map_icm_aux ( hermon, &map_icm_aux ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not map AUX ICM: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
goto err_map_icm_aux;
|
||
|
}
|
||
|
icm_phys += icm_aux_len;
|
||
|
|
||
|
/* MAP ICM area */
|
||
|
for ( i = 0 ; i < HERMON_ICM_NUM_REGIONS ; i++ ) {
|
||
|
memset ( &map_icm, 0, sizeof ( map_icm ) );
|
||
|
MLX_FILL_1 ( &map_icm, 0,
|
||
|
va_h, ( hermon->icm_map[i].offset >> 32 ) );
|
||
|
MLX_FILL_1 ( &map_icm, 1,
|
||
|
va_l, ( hermon->icm_map[i].offset >> 12 ) );
|
||
|
MLX_FILL_2 ( &map_icm, 3,
|
||
|
log2size,
|
||
|
fls ( ( hermon->icm_map[i].len /
|
||
|
HERMON_PAGE_SIZE ) - 1 ),
|
||
|
pa_l, ( icm_phys >> 12 ) );
|
||
|
DBGC ( hermon, "Hermon %p mapping ICM %llx+%zx (2^%d pages) "
|
||
|
"=> %08lx\n", hermon, hermon->icm_map[i].offset,
|
||
|
hermon->icm_map[i].len,
|
||
|
fls ( ( hermon->icm_map[i].len /
|
||
|
HERMON_PAGE_SIZE ) - 1 ), icm_phys );
|
||
|
if ( ( rc = hermon_cmd_map_icm ( hermon, &map_icm ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not map ICM: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
goto err_map_icm;
|
||
|
}
|
||
|
icm_phys += hermon->icm_map[i].len;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
|
||
|
err_map_icm:
|
||
|
assert ( i == 0 ); /* We don't handle partial failure at present */
|
||
|
hermon_cmd_unmap_icm_aux ( hermon );
|
||
|
err_map_icm_aux:
|
||
|
ufree ( hermon->icm );
|
||
|
hermon->icm = UNULL;
|
||
|
err_alloc:
|
||
|
err_set_icm_size:
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Free ICM
|
||
|
*
|
||
|
* @v hermon Hermon device
|
||
|
*/
|
||
|
static void hermon_free_icm ( struct hermon *hermon ) {
|
||
|
struct hermonprm_scalar_parameter unmap_icm;
|
||
|
int i;
|
||
|
|
||
|
for ( i = ( HERMON_ICM_NUM_REGIONS - 1 ) ; i >= 0 ; i-- ) {
|
||
|
memset ( &unmap_icm, 0, sizeof ( unmap_icm ) );
|
||
|
MLX_FILL_1 ( &unmap_icm, 0, value_hi,
|
||
|
( hermon->icm_map[i].offset >> 32 ) );
|
||
|
MLX_FILL_1 ( &unmap_icm, 1, value,
|
||
|
hermon->icm_map[i].offset );
|
||
|
hermon_cmd_unmap_icm ( hermon,
|
||
|
( 1 << fls ( ( hermon->icm_map[i].len /
|
||
|
HERMON_PAGE_SIZE ) - 1)),
|
||
|
&unmap_icm );
|
||
|
}
|
||
|
hermon_cmd_unmap_icm_aux ( hermon );
|
||
|
ufree ( hermon->icm );
|
||
|
hermon->icm = UNULL;
|
||
|
}
|
||
|
|
||
|
/***************************************************************************
|
||
|
*
|
||
|
* Infiniband link-layer operations
|
||
|
*
|
||
|
***************************************************************************
|
||
|
*/
|
||
|
|
||
|
/**
|
||
|
* Initialise Infiniband link
|
||
|
*
|
||
|
* @v hermon Hermon device
|
||
|
* @ret rc Return status code
|
||
|
*/
|
||
|
static int hermon_init_port ( struct hermon *hermon ) {
|
||
|
struct hermonprm_init_port init_port;
|
||
|
int rc;
|
||
|
|
||
|
memset ( &init_port, 0, sizeof ( init_port ) );
|
||
|
MLX_FILL_2 ( &init_port, 0,
|
||
|
port_width_cap, 3,
|
||
|
vl_cap, 1 );
|
||
|
MLX_FILL_2 ( &init_port, 1,
|
||
|
mtu, HERMON_MTU_2048,
|
||
|
max_gid, 1 );
|
||
|
MLX_FILL_1 ( &init_port, 2, max_pkey, 64 );
|
||
|
if ( ( rc = hermon_cmd_init_port ( hermon, PXE_IB_PORT,
|
||
|
&init_port ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not intialise port: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Close Infiniband link
|
||
|
*
|
||
|
* @v hermon Hermon device
|
||
|
*/
|
||
|
static void hermon_close_port ( struct hermon *hermon ) {
|
||
|
int rc;
|
||
|
|
||
|
if ( ( rc = hermon_cmd_close_port ( hermon, PXE_IB_PORT ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not close port: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
/* Nothing we can do about this */
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/***************************************************************************
|
||
|
*
|
||
|
* PCI interface
|
||
|
*
|
||
|
***************************************************************************
|
||
|
*/
|
||
|
|
||
|
/**
|
||
|
* Set up memory protection table
|
||
|
*
|
||
|
* @v hermon Hermon device
|
||
|
* @ret rc Return status code
|
||
|
*/
|
||
|
static int hermon_setup_mpt ( struct hermon *hermon ) {
|
||
|
struct hermonprm_mpt mpt;
|
||
|
uint32_t key;
|
||
|
int rc;
|
||
|
|
||
|
/* Derive key */
|
||
|
key = ( hermon->cap.reserved_mrws | HERMON_MKEY_PREFIX );
|
||
|
hermon->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, HERMON_GLOBAL_PD );
|
||
|
MLX_FILL_1 ( &mpt, 10, len64, 1 );
|
||
|
if ( ( rc = hermon_cmd_sw2hw_mpt ( hermon,
|
||
|
hermon->cap.reserved_mrws,
|
||
|
&mpt ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not set up MPT: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Probe PCI device
|
||
|
*
|
||
|
* @v pci PCI device
|
||
|
* @v id PCI ID
|
||
|
* @ret rc Return status code
|
||
|
*/
|
||
|
static int hermon_probe ( struct pci_device *pci,
|
||
|
const struct pci_device_id *id __unused ) {
|
||
|
struct ib_device *ibdev;
|
||
|
struct hermon *hermon;
|
||
|
struct hermonprm_init_hca init_hca;
|
||
|
int rc;
|
||
|
|
||
|
/* Allocate Infiniband device */
|
||
|
ibdev = alloc_ibdev ( sizeof ( *hermon ) );
|
||
|
if ( ! ibdev ) {
|
||
|
rc = -ENOMEM;
|
||
|
goto err_ibdev;
|
||
|
}
|
||
|
ibdev->op = &hermon_ib_operations;
|
||
|
pci_set_drvdata ( pci, ibdev );
|
||
|
ibdev->dev = &pci->dev;
|
||
|
hermon = ibdev->dev_priv;
|
||
|
memset ( hermon, 0, sizeof ( *hermon ) );
|
||
|
|
||
|
/* Fix up PCI device */
|
||
|
adjust_pci_device ( pci );
|
||
|
|
||
|
/* Get PCI BARs */
|
||
|
hermon->config = ioremap ( pci_bar_start ( pci, HERMON_PCI_CONFIG_BAR),
|
||
|
HERMON_PCI_CONFIG_BAR_SIZE );
|
||
|
hermon->uar = ioremap ( ( pci_bar_start ( pci, HERMON_PCI_UAR_BAR ) +
|
||
|
HERMON_UAR_PAGE * HERMON_PAGE_SIZE ),
|
||
|
HERMON_PAGE_SIZE );
|
||
|
|
||
|
/* Allocate space for mailboxes */
|
||
|
hermon->mailbox_in = malloc_dma ( HERMON_MBOX_SIZE,
|
||
|
HERMON_MBOX_ALIGN );
|
||
|
if ( ! hermon->mailbox_in ) {
|
||
|
rc = -ENOMEM;
|
||
|
goto err_mailbox_in;
|
||
|
}
|
||
|
hermon->mailbox_out = malloc_dma ( HERMON_MBOX_SIZE,
|
||
|
HERMON_MBOX_ALIGN );
|
||
|
if ( ! hermon->mailbox_out ) {
|
||
|
rc = -ENOMEM;
|
||
|
goto err_mailbox_out;
|
||
|
}
|
||
|
|
||
|
/* Start firmware */
|
||
|
if ( ( rc = hermon_start_firmware ( hermon ) ) != 0 )
|
||
|
goto err_start_firmware;
|
||
|
|
||
|
/* Get device limits */
|
||
|
if ( ( rc = hermon_get_cap ( hermon ) ) != 0 )
|
||
|
goto err_get_cap;
|
||
|
|
||
|
/* Allocate ICM */
|
||
|
memset ( &init_hca, 0, sizeof ( init_hca ) );
|
||
|
if ( ( rc = hermon_alloc_icm ( hermon, &init_hca ) ) != 0 )
|
||
|
goto err_alloc_icm;
|
||
|
|
||
|
/* Initialise HCA */
|
||
|
MLX_FILL_1 ( &init_hca, 0, version, 0x02 /* "Must be 0x02" */ );
|
||
|
MLX_FILL_1 ( &init_hca, 5, udp, 1 );
|
||
|
MLX_FILL_1 ( &init_hca, 74, uar_parameters.log_max_uars, 8 );
|
||
|
if ( ( rc = hermon_cmd_init_hca ( hermon, &init_hca ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not initialise HCA: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
goto err_init_hca;
|
||
|
}
|
||
|
|
||
|
/* Set up memory protection */
|
||
|
if ( ( rc = hermon_setup_mpt ( hermon ) ) != 0 )
|
||
|
goto err_setup_mpt;
|
||
|
|
||
|
/* Bring up IB layer */
|
||
|
if ( ( rc = hermon_init_port ( hermon ) ) != 0 )
|
||
|
goto err_init_port;
|
||
|
|
||
|
/* Wait for link */
|
||
|
if ( ( rc = hermon_wait_for_link ( hermon ) ) != 0 )
|
||
|
goto err_wait_for_link;
|
||
|
|
||
|
/* Get MAD parameters */
|
||
|
if ( ( rc = hermon_get_mad_params ( ibdev ) ) != 0 )
|
||
|
goto err_get_mad_params;
|
||
|
|
||
|
DBGC ( hermon, "Hermon %p port GID is %08lx:%08lx:%08lx:%08lx\n",
|
||
|
hermon, htonl ( ibdev->port_gid.u.dwords[0] ),
|
||
|
htonl ( ibdev->port_gid.u.dwords[1] ),
|
||
|
htonl ( ibdev->port_gid.u.dwords[2] ),
|
||
|
htonl ( ibdev->port_gid.u.dwords[3] ) );
|
||
|
|
||
|
/* Add IPoIB device */
|
||
|
if ( ( rc = ipoib_probe ( ibdev ) ) != 0 ) {
|
||
|
DBGC ( hermon, "Hermon %p could not add IPoIB device: %s\n",
|
||
|
hermon, strerror ( rc ) );
|
||
|
goto err_ipoib_probe;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
|
||
|
err_ipoib_probe:
|
||
|
err_get_mad_params:
|
||
|
err_wait_for_link:
|
||
|
hermon_close_port ( hermon );
|
||
|
err_init_port:
|
||
|
err_setup_mpt:
|
||
|
hermon_cmd_close_hca ( hermon );
|
||
|
err_init_hca:
|
||
|
hermon_free_icm ( hermon );
|
||
|
err_alloc_icm:
|
||
|
err_get_cap:
|
||
|
hermon_stop_firmware ( hermon );
|
||
|
err_start_firmware:
|
||
|
free_dma ( hermon->mailbox_out, HERMON_MBOX_SIZE );
|
||
|
err_mailbox_out:
|
||
|
free_dma ( hermon->mailbox_in, HERMON_MBOX_SIZE );
|
||
|
err_mailbox_in:
|
||
|
free_ibdev ( ibdev );
|
||
|
err_ibdev:
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Remove PCI device
|
||
|
*
|
||
|
* @v pci PCI device
|
||
|
*/
|
||
|
static void hermon_remove ( struct pci_device *pci ) {
|
||
|
struct ib_device *ibdev = pci_get_drvdata ( pci );
|
||
|
struct hermon *hermon = ibdev->dev_priv;
|
||
|
|
||
|
ipoib_remove ( ibdev );
|
||
|
hermon_close_port ( hermon );
|
||
|
hermon_cmd_close_hca ( hermon );
|
||
|
hermon_free_icm ( hermon );
|
||
|
hermon_stop_firmware ( hermon );
|
||
|
hermon_stop_firmware ( hermon );
|
||
|
free_dma ( hermon->mailbox_out, HERMON_MBOX_SIZE );
|
||
|
free_dma ( hermon->mailbox_in, HERMON_MBOX_SIZE );
|
||
|
free_ibdev ( ibdev );
|
||
|
}
|
||
|
|
||
|
static struct pci_device_id hermon_nics[] = {
|
||
|
PCI_ROM ( 0x15b3, 0x6340, "mt25408", "MT25408 HCA driver" ),
|
||
|
PCI_ROM ( 0x15b3, 0x634a, "mt25418", "MT25418 HCA driver" ),
|
||
|
};
|
||
|
|
||
|
struct pci_driver hermon_driver __pci_driver = {
|
||
|
.ids = hermon_nics,
|
||
|
.id_count = ( sizeof ( hermon_nics ) / sizeof ( hermon_nics[0] ) ),
|
||
|
.probe = hermon_probe,
|
||
|
.remove = hermon_remove,
|
||
|
};
|