bfa_cee.c

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/*
 * Linux network driver for Brocade Converged Network 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.
 */
/*
 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
 * All rights reserved
 * www.brocade.com
 */

#include "bfa_cee.h"
#include "bfi_cna.h"
#include "bfa_ioc.h"

static void bfa_cee_format_lldp_cfg(struct bfa_cee_lldp_cfg *lldp_cfg);
static void bfa_cee_format_cee_cfg(void *buffer);

static void
bfa_cee_format_cee_cfg(void *buffer)
{
    struct bfa_cee_attr *cee_cfg = buffer;
    bfa_cee_format_lldp_cfg(&cee_cfg->lldp_remote);
}

static void
bfa_cee_stats_swap(struct bfa_cee_stats *stats)
{
    u32 *buffer = (u32 *)stats;
    int i;

    for (i = 0; i < (sizeof(struct bfa_cee_stats) / sizeof(u32));
        i++) {
        buffer[i] = ntohl(buffer[i]);
    }
}

static void
bfa_cee_format_lldp_cfg(struct bfa_cee_lldp_cfg *lldp_cfg)
{
    lldp_cfg->time_to_live =
            ntohs(lldp_cfg->time_to_live);
    lldp_cfg->enabled_system_cap =
            ntohs(lldp_cfg->enabled_system_cap);
}

static u32
bfa_cee_attr_meminfo(void)
{
    return roundup(sizeof(struct bfa_cee_attr), BFA_DMA_ALIGN_SZ);
}
static u32
bfa_cee_stats_meminfo(void)
{
    return roundup(sizeof(struct bfa_cee_stats), BFA_DMA_ALIGN_SZ);
}

static void
bfa_cee_get_attr_isr(struct bfa_cee *cee, enum bfa_status status)
{
    cee->get_attr_status = status;
    if (status == BFA_STATUS_OK) {
        memcpy(cee->attr, cee->attr_dma.kva,
            sizeof(struct bfa_cee_attr));
        bfa_cee_format_cee_cfg(cee->attr);
    }
    cee->get_attr_pending = false;
    if (cee->cbfn.get_attr_cbfn)
        cee->cbfn.get_attr_cbfn(cee->cbfn.get_attr_cbarg, status);
}

static void
bfa_cee_get_stats_isr(struct bfa_cee *cee, enum bfa_status status)
{
    cee->get_stats_status = status;
    if (status == BFA_STATUS_OK) {
        memcpy(cee->stats, cee->stats_dma.kva,
            sizeof(struct bfa_cee_stats));
        bfa_cee_stats_swap(cee->stats);
    }
    cee->get_stats_pending = false;
    if (cee->cbfn.get_stats_cbfn)
        cee->cbfn.get_stats_cbfn(cee->cbfn.get_stats_cbarg, status);
}

static void
bfa_cee_reset_stats_isr(struct bfa_cee *cee, enum bfa_status status)
{
    cee->reset_stats_status = status;
    cee->reset_stats_pending = false;
    if (cee->cbfn.reset_stats_cbfn)
        cee->cbfn.reset_stats_cbfn(cee->cbfn.reset_stats_cbarg, status);
}
u32
bfa_nw_cee_meminfo(void)
{
    return bfa_cee_attr_meminfo() + bfa_cee_stats_meminfo();
}

void
bfa_nw_cee_mem_claim(struct bfa_cee *cee, u8 *dma_kva, u64 dma_pa)
{
    cee->attr_dma.kva = dma_kva;
    cee->attr_dma.pa = dma_pa;
    cee->stats_dma.kva = dma_kva + bfa_cee_attr_meminfo();
    cee->stats_dma.pa = dma_pa + bfa_cee_attr_meminfo();
    cee->attr = (struct bfa_cee_attr *) dma_kva;
    cee->stats = (struct bfa_cee_stats *)
        (dma_kva + bfa_cee_attr_meminfo());
}

enum bfa_status
bfa_nw_cee_get_attr(struct bfa_cee *cee, struct bfa_cee_attr *attr,
            bfa_cee_get_attr_cbfn_t cbfn, void *cbarg)
{
    struct bfi_cee_get_req *cmd;

    BUG_ON(!((cee != NULL) && (cee->ioc != NULL)));
    if (!bfa_nw_ioc_is_operational(cee->ioc))
        return BFA_STATUS_IOC_FAILURE;

    if (cee->get_attr_pending)
        return  BFA_STATUS_DEVBUSY;

    cee->get_attr_pending = true;
    cmd = (struct bfi_cee_get_req *) cee->get_cfg_mb.msg;
    cee->attr = attr;
    cee->cbfn.get_attr_cbfn = cbfn;
    cee->cbfn.get_attr_cbarg = cbarg;
    bfi_h2i_set(cmd->mh, BFI_MC_CEE, BFI_CEE_H2I_GET_CFG_REQ,
            bfa_ioc_portid(cee->ioc));
    bfa_dma_be_addr_set(cmd->dma_addr, cee->attr_dma.pa);
    bfa_nw_ioc_mbox_queue(cee->ioc, &cee->get_cfg_mb, NULL, NULL);

    return BFA_STATUS_OK;
}

static void
bfa_cee_isr(void *cbarg, struct bfi_mbmsg *m)
{
    union bfi_cee_i2h_msg_u *msg;
    struct bfi_cee_get_rsp *get_rsp;
    struct bfa_cee *cee = (struct bfa_cee *) cbarg;
    msg = (union bfi_cee_i2h_msg_u *) m;
    get_rsp = (struct bfi_cee_get_rsp *) m;
    switch (msg->mh.msg_id) {
    case BFI_CEE_I2H_GET_CFG_RSP:
        bfa_cee_get_attr_isr(cee, get_rsp->cmd_status);
        break;
    case BFI_CEE_I2H_GET_STATS_RSP:
        bfa_cee_get_stats_isr(cee, get_rsp->cmd_status);
        break;
    case BFI_CEE_I2H_RESET_STATS_RSP:
        bfa_cee_reset_stats_isr(cee, get_rsp->cmd_status);
        break;
    default:
        BUG_ON(1);
    }
}

static void
bfa_cee_notify(void *arg, enum bfa_ioc_event event)
{
    struct bfa_cee *cee;
    cee = (struct bfa_cee *) arg;

    switch (event) {
    case BFA_IOC_E_DISABLED:
    case BFA_IOC_E_FAILED:
        if (cee->get_attr_pending) {
            cee->get_attr_status = BFA_STATUS_FAILED;
            cee->get_attr_pending  = false;
            if (cee->cbfn.get_attr_cbfn) {
                cee->cbfn.get_attr_cbfn(
                    cee->cbfn.get_attr_cbarg,
                    BFA_STATUS_FAILED);
            }
        }
        if (cee->get_stats_pending) {
            cee->get_stats_status = BFA_STATUS_FAILED;
            cee->get_stats_pending  = false;
            if (cee->cbfn.get_stats_cbfn) {
                cee->cbfn.get_stats_cbfn(
                    cee->cbfn.get_stats_cbarg,
                    BFA_STATUS_FAILED);
            }
        }
        if (cee->reset_stats_pending) {
            cee->reset_stats_status = BFA_STATUS_FAILED;
            cee->reset_stats_pending  = false;
            if (cee->cbfn.reset_stats_cbfn) {
                cee->cbfn.reset_stats_cbfn(
                    cee->cbfn.reset_stats_cbarg,
                    BFA_STATUS_FAILED);
            }
        }
        break;

    default:
        break;
    }
}

void
bfa_nw_cee_attach(struct bfa_cee *cee, struct bfa_ioc *ioc,
        void *dev)
{
    BUG_ON(!(cee != NULL));
    cee->dev = dev;
    cee->ioc = ioc;

    bfa_nw_ioc_mbox_regisr(cee->ioc, BFI_MC_CEE, bfa_cee_isr, cee);
    bfa_q_qe_init(&cee->ioc_notify);
    bfa_ioc_notify_init(&cee->ioc_notify, bfa_cee_notify, cee);
    bfa_nw_ioc_notify_register(cee->ioc, &cee->ioc_notify);
}