/*
* 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_modules.h"
#include "bfi_reg.h"
BFA_TRC_FILE(HAL, IOCFC_CT);
/*
* Dummy interrupt handler for handling spurious interrupt during chip-reinit.
*/
static void
bfa_hwct_msix_dummy(struct bfa_s *bfa, int vec)
{
}
void
bfa_hwct_reginit(struct bfa_s *bfa)
{
struct bfa_iocfc_regs_s *bfa_regs = &bfa->iocfc.bfa_regs;
void __iomem *kva = bfa_ioc_bar0(&bfa->ioc);
int fn = bfa_ioc_pcifn(&bfa->ioc);
if (fn == 0) {
bfa_regs->intr_status = (kva + HOSTFN0_INT_STATUS);
bfa_regs->intr_mask = (kva + HOSTFN0_INT_MSK);
} else {
bfa_regs->intr_status = (kva + HOSTFN1_INT_STATUS);
bfa_regs->intr_mask = (kva + HOSTFN1_INT_MSK);
}
}
void
bfa_hwct2_reginit(struct bfa_s *bfa)
{
struct bfa_iocfc_regs_s *bfa_regs = &bfa->iocfc.bfa_regs;
void __iomem *kva = bfa_ioc_bar0(&bfa->ioc);
bfa_regs->intr_status = (kva + CT2_HOSTFN_INT_STATUS);
bfa_regs->intr_mask = (kva + CT2_HOSTFN_INTR_MASK);
}
void
bfa_hwct_reqq_ack(struct bfa_s *bfa, int reqq)
{
u32 r32;
r32 = readl(bfa->iocfc.bfa_regs.cpe_q_ctrl[reqq]);
writel(r32, bfa->iocfc.bfa_regs.cpe_q_ctrl[reqq]);
}
/*
* Actions to respond RME Interrupt for Catapult ASIC:
* - Write 1 to Interrupt Status register (INTx only - done in bfa_intx())
* - Acknowledge by writing to RME Queue Control register
* - Update CI
*/
void
bfa_hwct_rspq_ack(struct bfa_s *bfa, int rspq, u32 ci)
{
u32 r32;
r32 = readl(bfa->iocfc.bfa_regs.rme_q_ctrl[rspq]);
writel(r32, bfa->iocfc.bfa_regs.rme_q_ctrl[rspq]);
bfa_rspq_ci(bfa, rspq) = ci;
writel(ci, bfa->iocfc.bfa_regs.rme_q_ci[rspq]);
mmiowb();
}
/*
* Actions to respond RME Interrupt for Catapult2 ASIC:
* - Write 1 to Interrupt Status register (INTx only - done in bfa_intx())
* - Update CI
*/
void
bfa_hwct2_rspq_ack(struct bfa_s *bfa, int rspq, u32 ci)
{
bfa_rspq_ci(bfa, rspq) = ci;
writel(ci, bfa->iocfc.bfa_regs.rme_q_ci[rspq]);
mmiowb();
}
void
bfa_hwct_msix_getvecs(struct bfa_s *bfa, u32 *msix_vecs_bmap,
u32 *num_vecs, u32 *max_vec_bit)
{
*msix_vecs_bmap = (1 << BFI_MSIX_CT_MAX) - 1;
*max_vec_bit = (1 << (BFI_MSIX_CT_MAX - 1));
*num_vecs = BFI_MSIX_CT_MAX;
}
/*
* Setup MSI-X vector for catapult
*/
void
bfa_hwct_msix_init(struct bfa_s *bfa, int nvecs)
{
WARN_ON((nvecs != 1) && (nvecs != BFI_MSIX_CT_MAX));
bfa_trc(bfa, nvecs);
bfa->msix.nvecs = nvecs;
bfa_hwct_msix_uninstall(bfa);
}
void
bfa_hwct_msix_ctrl_install(struct bfa_s *bfa)
{
if (bfa->msix.nvecs == 0)
return;
if (bfa->msix.nvecs == 1)
bfa->msix.handler[BFI_MSIX_LPU_ERR_CT] = bfa_msix_all;
else
bfa->msix.handler[BFI_MSIX_LPU_ERR_CT] = bfa_msix_lpu_err;
}
void
bfa_hwct_msix_queue_install(struct bfa_s *bfa)
{
int i;
if (bfa->msix.nvecs == 0)
return;
if (bfa->msix.nvecs == 1) {
for (i = BFI_MSIX_CPE_QMIN_CT; i < BFI_MSIX_CT_MAX; i++)
bfa->msix.handler[i] = bfa_msix_all;
return;
}
for (i = BFI_MSIX_CPE_QMIN_CT; i <= BFI_MSIX_CPE_QMAX_CT; i++)
bfa->msix.handler[i] = bfa_msix_reqq;
for (i = BFI_MSIX_RME_QMIN_CT; i <= BFI_MSIX_RME_QMAX_CT; i++)
bfa->msix.handler[i] = bfa_msix_rspq;
}
void
bfa_hwct_msix_uninstall(struct bfa_s *bfa)
{
int i;
for (i = 0; i < BFI_MSIX_CT_MAX; i++)
bfa->msix.handler[i] = bfa_hwct_msix_dummy;
}
/*
* Enable MSI-X vectors
*/
void
bfa_hwct_isr_mode_set(struct bfa_s *bfa, bfa_boolean_t msix)
{
bfa_trc(bfa, 0);
bfa_ioc_isr_mode_set(&bfa->ioc, msix);
}
void
bfa_hwct_msix_get_rme_range(struct bfa_s *bfa, u32 *start, u32 *end)
{
*start = BFI_MSIX_RME_QMIN_CT;
*end = BFI_MSIX_RME_QMAX_CT;
}
