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kernel-fxtec-pro1x/drivers/scsi/bfa/bfa_port.c
Krishna Gudipati 111892082e [SCSI] bfa: Brocade-1860 Fabric Adapter Hardware Enablement 
- Added support for Brocade-1860 Fabric Adapter.
- Made changes to support single firmware image per asic type.
- Combined bfi_cbreg.h and bfi_ctreg.h defines into bfi_reg.h with
  only minimal defines used by host.
- Added changes to setup CPE/RME Queue register offsets based on
  firmware response.
- Removed queue register offset initializations and added register offsets
  to BFI config response message.
- Added Brocade-1860 asic specific interrupt status definitions and
  mailbox interfaces.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-06-29 15:31:31 -05:00

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