461 lines
9.9 KiB
C
461 lines
9.9 KiB
C
/*
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* Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
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* All rights reserved
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* www.brocade.com
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*
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* Linux driver for Brocade Fibre Channel Host Bus Adapter.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License (GPL) Version 2 as
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* published by the Free Software Foundation
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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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#include "bfad_drv.h"
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#include "bfa_defs_svc.h"
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#include "bfa_port.h"
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#include "bfi.h"
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#include "bfa_ioc.h"
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BFA_TRC_FILE(CNA, PORT);
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#define bfa_ioc_portid(__ioc) ((__ioc)->port_id)
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static void
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bfa_port_stats_swap(struct bfa_port_s *port, union bfa_port_stats_u *stats)
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{
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u32 *dip = (u32 *) stats;
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__be32 t0, t1;
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int i;
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for (i = 0; i < sizeof(union bfa_port_stats_u)/sizeof(u32);
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i += 2) {
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t0 = dip[i];
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t1 = dip[i + 1];
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#ifdef __BIG_ENDIAN
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dip[i] = be32_to_cpu(t0);
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dip[i + 1] = be32_to_cpu(t1);
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#else
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dip[i] = be32_to_cpu(t1);
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dip[i + 1] = be32_to_cpu(t0);
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#endif
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}
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}
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/*
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* bfa_port_enable_isr()
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*
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*
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* @param[in] port - Pointer to the port module
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* status - Return status from the f/w
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*
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* @return void
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*/
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static void
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bfa_port_enable_isr(struct bfa_port_s *port, bfa_status_t status)
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{
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bfa_trc(port, status);
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port->endis_pending = BFA_FALSE;
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port->endis_cbfn(port->endis_cbarg, status);
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}
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/*
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* bfa_port_disable_isr()
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*
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*
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* @param[in] port - Pointer to the port module
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* status - Return status from the f/w
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*
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* @return void
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*/
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static void
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bfa_port_disable_isr(struct bfa_port_s *port, bfa_status_t status)
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{
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bfa_trc(port, status);
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port->endis_pending = BFA_FALSE;
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port->endis_cbfn(port->endis_cbarg, status);
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}
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/*
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* bfa_port_get_stats_isr()
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*
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*
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* @param[in] port - Pointer to the Port module
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* status - Return status from the f/w
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*
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* @return void
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*/
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static void
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bfa_port_get_stats_isr(struct bfa_port_s *port, bfa_status_t status)
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{
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port->stats_status = status;
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port->stats_busy = BFA_FALSE;
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if (status == BFA_STATUS_OK) {
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struct timeval tv;
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memcpy(port->stats, port->stats_dma.kva,
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sizeof(union bfa_port_stats_u));
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bfa_port_stats_swap(port, port->stats);
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do_gettimeofday(&tv);
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port->stats->fc.secs_reset = tv.tv_sec - port->stats_reset_time;
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}
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if (port->stats_cbfn) {
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port->stats_cbfn(port->stats_cbarg, status);
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port->stats_cbfn = NULL;
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}
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}
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/*
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* bfa_port_clear_stats_isr()
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*
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*
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* @param[in] port - Pointer to the Port module
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* status - Return status from the f/w
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*
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* @return void
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*/
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static void
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bfa_port_clear_stats_isr(struct bfa_port_s *port, bfa_status_t status)
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{
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struct timeval tv;
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port->stats_status = status;
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port->stats_busy = BFA_FALSE;
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/*
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* re-initialize time stamp for stats reset
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*/
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do_gettimeofday(&tv);
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port->stats_reset_time = tv.tv_sec;
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if (port->stats_cbfn) {
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port->stats_cbfn(port->stats_cbarg, status);
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port->stats_cbfn = NULL;
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}
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}
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/*
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* bfa_port_isr()
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*
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*
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* @param[in] Pointer to the Port module data structure.
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*
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* @return void
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*/
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static void
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bfa_port_isr(void *cbarg, struct bfi_mbmsg_s *m)
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{
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struct bfa_port_s *port = (struct bfa_port_s *) cbarg;
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union bfi_port_i2h_msg_u *i2hmsg;
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i2hmsg = (union bfi_port_i2h_msg_u *) m;
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bfa_trc(port, m->mh.msg_id);
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switch (m->mh.msg_id) {
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case BFI_PORT_I2H_ENABLE_RSP:
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if (port->endis_pending == BFA_FALSE)
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break;
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bfa_port_enable_isr(port, i2hmsg->enable_rsp.status);
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break;
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case BFI_PORT_I2H_DISABLE_RSP:
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if (port->endis_pending == BFA_FALSE)
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break;
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bfa_port_disable_isr(port, i2hmsg->disable_rsp.status);
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break;
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case BFI_PORT_I2H_GET_STATS_RSP:
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/* Stats busy flag is still set? (may be cmd timed out) */
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if (port->stats_busy == BFA_FALSE)
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break;
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bfa_port_get_stats_isr(port, i2hmsg->getstats_rsp.status);
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break;
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case BFI_PORT_I2H_CLEAR_STATS_RSP:
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if (port->stats_busy == BFA_FALSE)
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break;
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bfa_port_clear_stats_isr(port, i2hmsg->clearstats_rsp.status);
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break;
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default:
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WARN_ON(1);
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}
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}
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/*
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* bfa_port_meminfo()
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*
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*
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* @param[in] void
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*
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* @return Size of DMA region
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*/
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u32
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bfa_port_meminfo(void)
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{
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return BFA_ROUNDUP(sizeof(union bfa_port_stats_u), BFA_DMA_ALIGN_SZ);
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}
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/*
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* bfa_port_mem_claim()
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*
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*
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* @param[in] port Port module pointer
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* dma_kva Kernel Virtual Address of Port DMA Memory
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* dma_pa Physical Address of Port DMA Memory
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*
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* @return void
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*/
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void
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bfa_port_mem_claim(struct bfa_port_s *port, u8 *dma_kva, u64 dma_pa)
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{
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port->stats_dma.kva = dma_kva;
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port->stats_dma.pa = dma_pa;
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}
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/*
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* bfa_port_enable()
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*
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* Send the Port enable request to the f/w
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*
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* @param[in] Pointer to the Port module data structure.
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*
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* @return Status
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*/
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bfa_status_t
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bfa_port_enable(struct bfa_port_s *port, bfa_port_endis_cbfn_t cbfn,
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void *cbarg)
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{
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struct bfi_port_generic_req_s *m;
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if (bfa_ioc_is_disabled(port->ioc)) {
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bfa_trc(port, BFA_STATUS_IOC_DISABLED);
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return BFA_STATUS_IOC_DISABLED;
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}
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if (!bfa_ioc_is_operational(port->ioc)) {
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bfa_trc(port, BFA_STATUS_IOC_FAILURE);
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return BFA_STATUS_IOC_FAILURE;
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}
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if (port->endis_pending) {
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bfa_trc(port, BFA_STATUS_DEVBUSY);
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return BFA_STATUS_DEVBUSY;
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}
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m = (struct bfi_port_generic_req_s *) port->endis_mb.msg;
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port->msgtag++;
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port->endis_cbfn = cbfn;
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port->endis_cbarg = cbarg;
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port->endis_pending = BFA_TRUE;
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bfi_h2i_set(m->mh, BFI_MC_PORT, BFI_PORT_H2I_ENABLE_REQ,
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bfa_ioc_portid(port->ioc));
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bfa_ioc_mbox_queue(port->ioc, &port->endis_mb);
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return BFA_STATUS_OK;
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}
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/*
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* bfa_port_disable()
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*
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* Send the Port disable request to the f/w
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*
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* @param[in] Pointer to the Port module data structure.
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*
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* @return Status
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*/
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bfa_status_t
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bfa_port_disable(struct bfa_port_s *port, bfa_port_endis_cbfn_t cbfn,
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void *cbarg)
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{
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struct bfi_port_generic_req_s *m;
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if (bfa_ioc_is_disabled(port->ioc)) {
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bfa_trc(port, BFA_STATUS_IOC_DISABLED);
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return BFA_STATUS_IOC_DISABLED;
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}
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if (!bfa_ioc_is_operational(port->ioc)) {
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bfa_trc(port, BFA_STATUS_IOC_FAILURE);
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return BFA_STATUS_IOC_FAILURE;
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}
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if (port->endis_pending) {
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bfa_trc(port, BFA_STATUS_DEVBUSY);
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return BFA_STATUS_DEVBUSY;
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}
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m = (struct bfi_port_generic_req_s *) port->endis_mb.msg;
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port->msgtag++;
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port->endis_cbfn = cbfn;
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port->endis_cbarg = cbarg;
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port->endis_pending = BFA_TRUE;
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bfi_h2i_set(m->mh, BFI_MC_PORT, BFI_PORT_H2I_DISABLE_REQ,
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bfa_ioc_portid(port->ioc));
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bfa_ioc_mbox_queue(port->ioc, &port->endis_mb);
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return BFA_STATUS_OK;
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}
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/*
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* bfa_port_get_stats()
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*
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* Send the request to the f/w to fetch Port statistics.
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*
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* @param[in] Pointer to the Port module data structure.
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*
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* @return Status
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*/
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bfa_status_t
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bfa_port_get_stats(struct bfa_port_s *port, union bfa_port_stats_u *stats,
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bfa_port_stats_cbfn_t cbfn, void *cbarg)
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{
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struct bfi_port_get_stats_req_s *m;
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if (!bfa_ioc_is_operational(port->ioc)) {
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bfa_trc(port, BFA_STATUS_IOC_FAILURE);
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return BFA_STATUS_IOC_FAILURE;
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}
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if (port->stats_busy) {
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bfa_trc(port, BFA_STATUS_DEVBUSY);
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return BFA_STATUS_DEVBUSY;
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}
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m = (struct bfi_port_get_stats_req_s *) port->stats_mb.msg;
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port->stats = stats;
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port->stats_cbfn = cbfn;
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port->stats_cbarg = cbarg;
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port->stats_busy = BFA_TRUE;
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bfa_dma_be_addr_set(m->dma_addr, port->stats_dma.pa);
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bfi_h2i_set(m->mh, BFI_MC_PORT, BFI_PORT_H2I_GET_STATS_REQ,
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bfa_ioc_portid(port->ioc));
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bfa_ioc_mbox_queue(port->ioc, &port->stats_mb);
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return BFA_STATUS_OK;
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}
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/*
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* bfa_port_clear_stats()
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*
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*
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* @param[in] Pointer to the Port module data structure.
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*
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* @return Status
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*/
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bfa_status_t
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bfa_port_clear_stats(struct bfa_port_s *port, bfa_port_stats_cbfn_t cbfn,
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void *cbarg)
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{
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struct bfi_port_generic_req_s *m;
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if (!bfa_ioc_is_operational(port->ioc)) {
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bfa_trc(port, BFA_STATUS_IOC_FAILURE);
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return BFA_STATUS_IOC_FAILURE;
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}
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if (port->stats_busy) {
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bfa_trc(port, BFA_STATUS_DEVBUSY);
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return BFA_STATUS_DEVBUSY;
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}
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m = (struct bfi_port_generic_req_s *) port->stats_mb.msg;
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port->stats_cbfn = cbfn;
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port->stats_cbarg = cbarg;
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port->stats_busy = BFA_TRUE;
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bfi_h2i_set(m->mh, BFI_MC_PORT, BFI_PORT_H2I_CLEAR_STATS_REQ,
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bfa_ioc_portid(port->ioc));
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bfa_ioc_mbox_queue(port->ioc, &port->stats_mb);
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return BFA_STATUS_OK;
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}
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/*
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* bfa_port_hbfail()
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*
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*
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* @param[in] Pointer to the Port module data structure.
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*
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* @return void
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*/
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void
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bfa_port_hbfail(void *arg)
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{
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struct bfa_port_s *port = (struct bfa_port_s *) arg;
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/* Fail any pending get_stats/clear_stats requests */
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if (port->stats_busy) {
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if (port->stats_cbfn)
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port->stats_cbfn(port->stats_cbarg, BFA_STATUS_FAILED);
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port->stats_cbfn = NULL;
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port->stats_busy = BFA_FALSE;
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}
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/* Clear any enable/disable is pending */
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if (port->endis_pending) {
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if (port->endis_cbfn)
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port->endis_cbfn(port->endis_cbarg, BFA_STATUS_FAILED);
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port->endis_cbfn = NULL;
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port->endis_pending = BFA_FALSE;
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}
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}
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/*
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* bfa_port_attach()
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*
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*
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* @param[in] port - Pointer to the Port module data structure
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* ioc - Pointer to the ioc module data structure
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* dev - Pointer to the device driver module data structure
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* The device driver specific mbox ISR functions have
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* this pointer as one of the parameters.
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* trcmod -
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*
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* @return void
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*/
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void
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bfa_port_attach(struct bfa_port_s *port, struct bfa_ioc_s *ioc,
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void *dev, struct bfa_trc_mod_s *trcmod)
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{
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struct timeval tv;
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WARN_ON(!port);
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port->dev = dev;
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port->ioc = ioc;
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port->trcmod = trcmod;
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port->stats_busy = BFA_FALSE;
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port->endis_pending = BFA_FALSE;
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port->stats_cbfn = NULL;
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port->endis_cbfn = NULL;
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bfa_ioc_mbox_regisr(port->ioc, BFI_MC_PORT, bfa_port_isr, port);
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bfa_ioc_hbfail_init(&port->hbfail, bfa_port_hbfail, port);
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list_add_tail(&port->hbfail.qe, &port->ioc->hb_notify_q);
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/*
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* initialize time stamp for stats reset
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*/
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do_gettimeofday(&tv);
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port->stats_reset_time = tv.tv_sec;
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bfa_trc(port, 0);
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}
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