path: root/drivers/scsi/bfa/bfa_iocfc.c

/*
 * Copyright (c) 2005-2009 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 <cs/bfa_debug.h>
#include <bfa_priv.h>
#include <log/bfa_log_hal.h>
#include <bfi/bfi_boot.h>
#include <bfi/bfi_cbreg.h>
#include <aen/bfa_aen_ioc.h>
#include <defs/bfa_defs_iocfc.h>
#include <defs/bfa_defs_pci.h>
#include "bfa_callback_priv.h"
#include "bfad_drv.h"

BFA_TRC_FILE(HAL, IOCFC);

/**
 * IOC local definitions
 */
#define BFA_IOCFC_TOV		5000	/* msecs */

enum {
	BFA_IOCFC_ACT_NONE	= 0,
	BFA_IOCFC_ACT_INIT	= 1,
	BFA_IOCFC_ACT_STOP	= 2,
	BFA_IOCFC_ACT_DISABLE	= 3,
};

/*
 * forward declarations
 */
static void bfa_iocfc_enable_cbfn(void *bfa_arg, enum bfa_status status);
static void bfa_iocfc_disable_cbfn(void *bfa_arg);
static void bfa_iocfc_hbfail_cbfn(void *bfa_arg);
static void bfa_iocfc_reset_cbfn(void *bfa_arg);
static void bfa_iocfc_stats_clear(void *bfa_arg);
static void bfa_iocfc_stats_swap(struct bfa_fw_stats_s *d,
			struct bfa_fw_stats_s *s);
static void bfa_iocfc_stats_clr_cb(void *bfa_arg, bfa_boolean_t complete);
static void bfa_iocfc_stats_clr_timeout(void *bfa_arg);
static void bfa_iocfc_stats_cb(void *bfa_arg, bfa_boolean_t complete);
static void bfa_iocfc_stats_timeout(void *bfa_arg);

static struct bfa_ioc_cbfn_s bfa_iocfc_cbfn;

/**
 *  bfa_ioc_pvt BFA IOC private functions
 */

static void
bfa_iocfc_cqs_sz(struct bfa_iocfc_cfg_s *cfg, u32 *dm_len)
{
	int             i, per_reqq_sz, per_rspq_sz;

	per_reqq_sz = BFA_ROUNDUP((cfg->drvcfg.num_reqq_elems * BFI_LMSG_SZ),
							BFA_DMA_ALIGN_SZ);
	per_rspq_sz = BFA_ROUNDUP((cfg->drvcfg.num_rspq_elems * BFI_LMSG_SZ),
							BFA_DMA_ALIGN_SZ);

	/*
	 * Calculate CQ size
	 */
	for (i = 0; i < cfg->fwcfg.num_cqs; i++) {
		*dm_len = *dm_len + per_reqq_sz;
		*dm_len = *dm_len + per_rspq_sz;
	}

	/*
	 * Calculate Shadow CI/PI size
	 */
	for (i = 0; i < cfg->fwcfg.num_cqs; i++)
		*dm_len += (2 * BFA_CACHELINE_SZ);
}

static void
bfa_iocfc_fw_cfg_sz(struct bfa_iocfc_cfg_s *cfg, u32 *dm_len)
{
	*dm_len +=
		BFA_ROUNDUP(sizeof(struct bfi_iocfc_cfg_s), BFA_CACHELINE_SZ);
	*dm_len +=
		BFA_ROUNDUP(sizeof(struct bfi_iocfc_cfgrsp_s),
			    BFA_CACHELINE_SZ);
	*dm_len += BFA_ROUNDUP(sizeof(struct bfa_fw_stats_s), BFA_CACHELINE_SZ);
}

/**
 * Use the Mailbox interface to send BFI_IOCFC_H2I_CFG_REQ
 */
static void
bfa_iocfc_send_cfg(void *bfa_arg)
{
	struct bfa_s *bfa = bfa_arg;
	struct bfa_iocfc_s *iocfc = &bfa->iocfc;
	struct bfi_iocfc_cfg_req_s cfg_req;
	struct bfi_iocfc_cfg_s *cfg_info = iocfc->cfginfo;
	struct bfa_iocfc_cfg_s  *cfg = &iocfc->cfg;
	int             i;

	bfa_assert(cfg->fwcfg.num_cqs <= BFI_IOC_MAX_CQS);
	bfa_trc(bfa, cfg->fwcfg.num_cqs);

	bfa_iocfc_reset_queues(bfa);

	/**
	 * initialize IOC configuration info
	 */
	cfg_info->endian_sig = BFI_IOC_ENDIAN_SIG;
	cfg_info->num_cqs = cfg->fwcfg.num_cqs;

	bfa_dma_be_addr_set(cfg_info->cfgrsp_addr, iocfc->cfgrsp_dma.pa);
	bfa_dma_be_addr_set(cfg_info->stats_addr, iocfc->stats_pa);

	/**
	 * dma map REQ and RSP circular queues and shadow pointers
	 */
	for (i = 0; i < cfg->fwcfg.num_cqs; i++) {
		bfa_dma_be_addr_set(cfg_info->req_cq_ba[i],
				       iocfc->req_cq_ba[i].pa);
		bfa_dma_be_addr_set(cfg_info->req_shadow_ci[i],
				       iocfc->req_cq_shadow_ci[i].pa);
		cfg_info->req_cq_elems[i] =
			bfa_os_htons(cfg->drvcfg.num_reqq_elems);

		bfa_dma_be_addr_set(cfg_info->rsp_cq_ba[i],
				       iocfc->rsp_cq_ba[i].pa);
		bfa_dma_be_addr_set(cfg_info->rsp_shadow_pi[i],
				       iocfc->rsp_cq_shadow_pi[i].pa);
		cfg_info->rsp_cq_elems[i] =
			bfa_os_htons(cfg->drvcfg.num_rspq_elems);
	}

	/**
	 * Enable interrupt coalescing if it is driver init path
	 * and not ioc disable/enable path.
	 */
	if (!iocfc->cfgdone)
		cfg_info->intr_attr.coalesce = BFA_TRUE;

	iocfc->cfgdone = BFA_FALSE;

	/**
	 * dma map IOC configuration itself
	 */
	bfi_h2i_set(cfg_req.mh, BFI_MC_IOCFC, BFI_IOCFC_H2I_CFG_REQ,
			bfa_lpuid(bfa));
	bfa_dma_be_addr_set(cfg_req.ioc_cfg_dma_addr, iocfc->cfg_info.pa);

	bfa_ioc_mbox_send(&bfa->ioc, &cfg_req,
			sizeof(struct bfi_iocfc_cfg_req_s));
}

static void
bfa_iocfc_init_mem(struct bfa_s *bfa, void *</