d4b671c58e
Signed-off-by: Jing Huang <huangj@brocade.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
501 lines
14 KiB
C
501 lines
14 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_ioc.h"
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#include "bfi_ctreg.h"
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#include "bfa_defs.h"
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BFA_TRC_FILE(CNA, IOC_CT);
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#define bfa_ioc_ct_sync_pos(__ioc) \
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((uint32_t) (1 << bfa_ioc_pcifn(__ioc)))
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#define BFA_IOC_SYNC_REQD_SH 16
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#define bfa_ioc_ct_get_sync_ackd(__val) (__val & 0x0000ffff)
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#define bfa_ioc_ct_clear_sync_ackd(__val) (__val & 0xffff0000)
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#define bfa_ioc_ct_get_sync_reqd(__val) (__val >> BFA_IOC_SYNC_REQD_SH)
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#define bfa_ioc_ct_sync_reqd_pos(__ioc) \
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(bfa_ioc_ct_sync_pos(__ioc) << BFA_IOC_SYNC_REQD_SH)
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/*
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* forward declarations
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*/
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static bfa_boolean_t bfa_ioc_ct_firmware_lock(struct bfa_ioc_s *ioc);
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static void bfa_ioc_ct_firmware_unlock(struct bfa_ioc_s *ioc);
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static void bfa_ioc_ct_reg_init(struct bfa_ioc_s *ioc);
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static void bfa_ioc_ct_map_port(struct bfa_ioc_s *ioc);
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static void bfa_ioc_ct_isr_mode_set(struct bfa_ioc_s *ioc, bfa_boolean_t msix);
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static void bfa_ioc_ct_notify_fail(struct bfa_ioc_s *ioc);
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static void bfa_ioc_ct_ownership_reset(struct bfa_ioc_s *ioc);
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static void bfa_ioc_ct_sync_join(struct bfa_ioc_s *ioc);
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static void bfa_ioc_ct_sync_leave(struct bfa_ioc_s *ioc);
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static void bfa_ioc_ct_sync_ack(struct bfa_ioc_s *ioc);
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static bfa_boolean_t bfa_ioc_ct_sync_complete(struct bfa_ioc_s *ioc);
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static struct bfa_ioc_hwif_s hwif_ct;
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/*
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* Called from bfa_ioc_attach() to map asic specific calls.
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*/
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void
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bfa_ioc_set_ct_hwif(struct bfa_ioc_s *ioc)
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{
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hwif_ct.ioc_pll_init = bfa_ioc_ct_pll_init;
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hwif_ct.ioc_firmware_lock = bfa_ioc_ct_firmware_lock;
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hwif_ct.ioc_firmware_unlock = bfa_ioc_ct_firmware_unlock;
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hwif_ct.ioc_reg_init = bfa_ioc_ct_reg_init;
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hwif_ct.ioc_map_port = bfa_ioc_ct_map_port;
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hwif_ct.ioc_isr_mode_set = bfa_ioc_ct_isr_mode_set;
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hwif_ct.ioc_notify_fail = bfa_ioc_ct_notify_fail;
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hwif_ct.ioc_ownership_reset = bfa_ioc_ct_ownership_reset;
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hwif_ct.ioc_sync_join = bfa_ioc_ct_sync_join;
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hwif_ct.ioc_sync_leave = bfa_ioc_ct_sync_leave;
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hwif_ct.ioc_sync_ack = bfa_ioc_ct_sync_ack;
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hwif_ct.ioc_sync_complete = bfa_ioc_ct_sync_complete;
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ioc->ioc_hwif = &hwif_ct;
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}
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/*
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* Return true if firmware of current driver matches the running firmware.
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*/
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static bfa_boolean_t
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bfa_ioc_ct_firmware_lock(struct bfa_ioc_s *ioc)
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{
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enum bfi_ioc_state ioc_fwstate;
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u32 usecnt;
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struct bfi_ioc_image_hdr_s fwhdr;
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/*
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* Firmware match check is relevant only for CNA.
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*/
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if (!ioc->cna)
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return BFA_TRUE;
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/*
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* If bios boot (flash based) -- do not increment usage count
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*/
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if (bfa_cb_image_get_size(BFA_IOC_FWIMG_TYPE(ioc)) <
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BFA_IOC_FWIMG_MINSZ)
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return BFA_TRUE;
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bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
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usecnt = readl(ioc->ioc_regs.ioc_usage_reg);
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/*
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* If usage count is 0, always return TRUE.
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*/
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if (usecnt == 0) {
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writel(1, ioc->ioc_regs.ioc_usage_reg);
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writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
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writel(0, ioc->ioc_regs.ioc_fail_sync);
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bfa_trc(ioc, usecnt);
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return BFA_TRUE;
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}
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ioc_fwstate = readl(ioc->ioc_regs.ioc_fwstate);
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bfa_trc(ioc, ioc_fwstate);
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/*
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* Use count cannot be non-zero and chip in uninitialized state.
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*/
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WARN_ON(ioc_fwstate == BFI_IOC_UNINIT);
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/*
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* Check if another driver with a different firmware is active
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*/
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bfa_ioc_fwver_get(ioc, &fwhdr);
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if (!bfa_ioc_fwver_cmp(ioc, &fwhdr)) {
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writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
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bfa_trc(ioc, usecnt);
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return BFA_FALSE;
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}
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/*
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* Same firmware version. Increment the reference count.
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*/
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usecnt++;
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writel(usecnt, ioc->ioc_regs.ioc_usage_reg);
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writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
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bfa_trc(ioc, usecnt);
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return BFA_TRUE;
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}
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static void
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bfa_ioc_ct_firmware_unlock(struct bfa_ioc_s *ioc)
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{
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u32 usecnt;
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/*
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* Firmware lock is relevant only for CNA.
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*/
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if (!ioc->cna)
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return;
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/*
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* If bios boot (flash based) -- do not decrement usage count
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*/
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if (bfa_cb_image_get_size(BFA_IOC_FWIMG_TYPE(ioc)) <
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BFA_IOC_FWIMG_MINSZ)
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return;
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/*
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* decrement usage count
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*/
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bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
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usecnt = readl(ioc->ioc_regs.ioc_usage_reg);
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WARN_ON(usecnt <= 0);
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usecnt--;
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writel(usecnt, ioc->ioc_regs.ioc_usage_reg);
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bfa_trc(ioc, usecnt);
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writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
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}
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/*
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* Notify other functions on HB failure.
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*/
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static void
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bfa_ioc_ct_notify_fail(struct bfa_ioc_s *ioc)
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{
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if (ioc->cna) {
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writel(__FW_INIT_HALT_P, ioc->ioc_regs.ll_halt);
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writel(__FW_INIT_HALT_P, ioc->ioc_regs.alt_ll_halt);
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/* Wait for halt to take effect */
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readl(ioc->ioc_regs.ll_halt);
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readl(ioc->ioc_regs.alt_ll_halt);
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} else {
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writel(__PSS_ERR_STATUS_SET, ioc->ioc_regs.err_set);
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readl(ioc->ioc_regs.err_set);
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}
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}
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/*
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* Host to LPU mailbox message addresses
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*/
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static struct { u32 hfn_mbox, lpu_mbox, hfn_pgn; } iocreg_fnreg[] = {
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{ HOSTFN0_LPU_MBOX0_0, LPU_HOSTFN0_MBOX0_0, HOST_PAGE_NUM_FN0 },
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{ HOSTFN1_LPU_MBOX0_8, LPU_HOSTFN1_MBOX0_8, HOST_PAGE_NUM_FN1 },
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{ HOSTFN2_LPU_MBOX0_0, LPU_HOSTFN2_MBOX0_0, HOST_PAGE_NUM_FN2 },
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{ HOSTFN3_LPU_MBOX0_8, LPU_HOSTFN3_MBOX0_8, HOST_PAGE_NUM_FN3 }
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};
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/*
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* Host <-> LPU mailbox command/status registers - port 0
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*/
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static struct { u32 hfn, lpu; } iocreg_mbcmd_p0[] = {
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{ HOSTFN0_LPU0_MBOX0_CMD_STAT, LPU0_HOSTFN0_MBOX0_CMD_STAT },
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{ HOSTFN1_LPU0_MBOX0_CMD_STAT, LPU0_HOSTFN1_MBOX0_CMD_STAT },
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{ HOSTFN2_LPU0_MBOX0_CMD_STAT, LPU0_HOSTFN2_MBOX0_CMD_STAT },
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{ HOSTFN3_LPU0_MBOX0_CMD_STAT, LPU0_HOSTFN3_MBOX0_CMD_STAT }
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};
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/*
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* Host <-> LPU mailbox command/status registers - port 1
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*/
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static struct { u32 hfn, lpu; } iocreg_mbcmd_p1[] = {
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{ HOSTFN0_LPU1_MBOX0_CMD_STAT, LPU1_HOSTFN0_MBOX0_CMD_STAT },
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{ HOSTFN1_LPU1_MBOX0_CMD_STAT, LPU1_HOSTFN1_MBOX0_CMD_STAT },
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{ HOSTFN2_LPU1_MBOX0_CMD_STAT, LPU1_HOSTFN2_MBOX0_CMD_STAT },
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{ HOSTFN3_LPU1_MBOX0_CMD_STAT, LPU1_HOSTFN3_MBOX0_CMD_STAT }
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};
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static void
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bfa_ioc_ct_reg_init(struct bfa_ioc_s *ioc)
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{
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void __iomem *rb;
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int pcifn = bfa_ioc_pcifn(ioc);
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rb = bfa_ioc_bar0(ioc);
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ioc->ioc_regs.hfn_mbox = rb + iocreg_fnreg[pcifn].hfn_mbox;
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ioc->ioc_regs.lpu_mbox = rb + iocreg_fnreg[pcifn].lpu_mbox;
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ioc->ioc_regs.host_page_num_fn = rb + iocreg_fnreg[pcifn].hfn_pgn;
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if (ioc->port_id == 0) {
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ioc->ioc_regs.heartbeat = rb + BFA_IOC0_HBEAT_REG;
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ioc->ioc_regs.ioc_fwstate = rb + BFA_IOC0_STATE_REG;
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ioc->ioc_regs.alt_ioc_fwstate = rb + BFA_IOC1_STATE_REG;
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ioc->ioc_regs.hfn_mbox_cmd = rb + iocreg_mbcmd_p0[pcifn].hfn;
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ioc->ioc_regs.lpu_mbox_cmd = rb + iocreg_mbcmd_p0[pcifn].lpu;
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ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P0;
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ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P1;
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} else {
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ioc->ioc_regs.heartbeat = (rb + BFA_IOC1_HBEAT_REG);
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ioc->ioc_regs.ioc_fwstate = (rb + BFA_IOC1_STATE_REG);
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ioc->ioc_regs.alt_ioc_fwstate = rb + BFA_IOC0_STATE_REG;
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ioc->ioc_regs.hfn_mbox_cmd = rb + iocreg_mbcmd_p1[pcifn].hfn;
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ioc->ioc_regs.lpu_mbox_cmd = rb + iocreg_mbcmd_p1[pcifn].lpu;
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ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P1;
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ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P0;
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}
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/*
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* PSS control registers
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*/
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ioc->ioc_regs.pss_ctl_reg = (rb + PSS_CTL_REG);
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ioc->ioc_regs.pss_err_status_reg = (rb + PSS_ERR_STATUS_REG);
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ioc->ioc_regs.app_pll_fast_ctl_reg = (rb + APP_PLL_425_CTL_REG);
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ioc->ioc_regs.app_pll_slow_ctl_reg = (rb + APP_PLL_312_CTL_REG);
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/*
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* IOC semaphore registers and serialization
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*/
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ioc->ioc_regs.ioc_sem_reg = (rb + HOST_SEM0_REG);
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ioc->ioc_regs.ioc_usage_sem_reg = (rb + HOST_SEM1_REG);
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ioc->ioc_regs.ioc_init_sem_reg = (rb + HOST_SEM2_REG);
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ioc->ioc_regs.ioc_usage_reg = (rb + BFA_FW_USE_COUNT);
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ioc->ioc_regs.ioc_fail_sync = (rb + BFA_IOC_FAIL_SYNC);
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/*
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* sram memory access
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*/
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ioc->ioc_regs.smem_page_start = (rb + PSS_SMEM_PAGE_START);
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ioc->ioc_regs.smem_pg0 = BFI_IOC_SMEM_PG0_CT;
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/*
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* err set reg : for notification of hb failure in fcmode
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*/
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ioc->ioc_regs.err_set = (rb + ERR_SET_REG);
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}
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/*
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* Initialize IOC to port mapping.
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*/
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#define FNC_PERS_FN_SHIFT(__fn) ((__fn) * 8)
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static void
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bfa_ioc_ct_map_port(struct bfa_ioc_s *ioc)
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{
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void __iomem *rb = ioc->pcidev.pci_bar_kva;
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u32 r32;
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/*
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* For catapult, base port id on personality register and IOC type
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*/
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r32 = readl(rb + FNC_PERS_REG);
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r32 >>= FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc));
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ioc->port_id = (r32 & __F0_PORT_MAP_MK) >> __F0_PORT_MAP_SH;
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bfa_trc(ioc, bfa_ioc_pcifn(ioc));
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bfa_trc(ioc, ioc->port_id);
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}
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/*
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* Set interrupt mode for a function: INTX or MSIX
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*/
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static void
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bfa_ioc_ct_isr_mode_set(struct bfa_ioc_s *ioc, bfa_boolean_t msix)
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{
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void __iomem *rb = ioc->pcidev.pci_bar_kva;
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u32 r32, mode;
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r32 = readl(rb + FNC_PERS_REG);
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bfa_trc(ioc, r32);
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mode = (r32 >> FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc))) &
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__F0_INTX_STATUS;
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/*
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* If already in desired mode, do not change anything
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*/
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if (!msix && mode)
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return;
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if (msix)
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mode = __F0_INTX_STATUS_MSIX;
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else
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mode = __F0_INTX_STATUS_INTA;
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r32 &= ~(__F0_INTX_STATUS << FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc)));
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r32 |= (mode << FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc)));
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bfa_trc(ioc, r32);
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writel(r32, rb + FNC_PERS_REG);
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}
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/*
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* Cleanup hw semaphore and usecnt registers
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*/
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static void
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bfa_ioc_ct_ownership_reset(struct bfa_ioc_s *ioc)
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{
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if (ioc->cna) {
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bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
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writel(0, ioc->ioc_regs.ioc_usage_reg);
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writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
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}
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/*
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* Read the hw sem reg to make sure that it is locked
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* before we clear it. If it is not locked, writing 1
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* will lock it instead of clearing it.
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*/
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readl(ioc->ioc_regs.ioc_sem_reg);
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writel(1, ioc->ioc_regs.ioc_sem_reg);
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}
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/**
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* Synchronized IOC failure processing routines
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*/
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static void
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bfa_ioc_ct_sync_join(struct bfa_ioc_s *ioc)
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{
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uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
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uint32_t sync_pos = bfa_ioc_ct_sync_reqd_pos(ioc);
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writel((r32 | sync_pos), ioc->ioc_regs.ioc_fail_sync);
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}
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static void
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bfa_ioc_ct_sync_leave(struct bfa_ioc_s *ioc)
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{
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uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
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uint32_t sync_msk = bfa_ioc_ct_sync_reqd_pos(ioc) |
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bfa_ioc_ct_sync_pos(ioc);
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writel((r32 & ~sync_msk), ioc->ioc_regs.ioc_fail_sync);
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}
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static void
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bfa_ioc_ct_sync_ack(struct bfa_ioc_s *ioc)
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{
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uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
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writel((r32 | bfa_ioc_ct_sync_pos(ioc)),
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ioc->ioc_regs.ioc_fail_sync);
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}
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static bfa_boolean_t
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bfa_ioc_ct_sync_complete(struct bfa_ioc_s *ioc)
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{
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uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
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uint32_t sync_reqd = bfa_ioc_ct_get_sync_reqd(r32);
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uint32_t sync_ackd = bfa_ioc_ct_get_sync_ackd(r32);
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uint32_t tmp_ackd;
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if (sync_ackd == 0)
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return BFA_TRUE;
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/**
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* The check below is to see whether any other PCI fn
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* has reinitialized the ASIC (reset sync_ackd bits)
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* and failed again while this IOC was waiting for hw
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* semaphore (in bfa_iocpf_sm_semwait()).
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*/
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tmp_ackd = sync_ackd;
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if ((sync_reqd & bfa_ioc_ct_sync_pos(ioc)) &&
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!(sync_ackd & bfa_ioc_ct_sync_pos(ioc)))
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sync_ackd |= bfa_ioc_ct_sync_pos(ioc);
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if (sync_reqd == sync_ackd) {
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writel(bfa_ioc_ct_clear_sync_ackd(r32),
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ioc->ioc_regs.ioc_fail_sync);
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|
writel(BFI_IOC_FAIL, ioc->ioc_regs.ioc_fwstate);
|
|
writel(BFI_IOC_FAIL, ioc->ioc_regs.alt_ioc_fwstate);
|
|
return BFA_TRUE;
|
|
}
|
|
|
|
/**
|
|
* If another PCI fn reinitialized and failed again while
|
|
* this IOC was waiting for hw sem, the sync_ackd bit for
|
|
* this IOC need to be set again to allow reinitialization.
|
|
*/
|
|
if (tmp_ackd != sync_ackd)
|
|
writel((r32 | sync_ackd), ioc->ioc_regs.ioc_fail_sync);
|
|
|
|
return BFA_FALSE;
|
|
}
|
|
|
|
/*
|
|
* Check the firmware state to know if pll_init has been completed already
|
|
*/
|
|
bfa_boolean_t
|
|
bfa_ioc_ct_pll_init_complete(void __iomem *rb)
|
|
{
|
|
if ((readl(rb + BFA_IOC0_STATE_REG) == BFI_IOC_OP) ||
|
|
(readl(rb + BFA_IOC1_STATE_REG) == BFI_IOC_OP))
|
|
return BFA_TRUE;
|
|
|
|
return BFA_FALSE;
|
|
}
|
|
|
|
bfa_status_t
|
|
bfa_ioc_ct_pll_init(void __iomem *rb, bfa_boolean_t fcmode)
|
|
{
|
|
u32 pll_sclk, pll_fclk, r32;
|
|
|
|
pll_sclk = __APP_PLL_312_LRESETN | __APP_PLL_312_ENARST |
|
|
__APP_PLL_312_RSEL200500 | __APP_PLL_312_P0_1(3U) |
|
|
__APP_PLL_312_JITLMT0_1(3U) |
|
|
__APP_PLL_312_CNTLMT0_1(1U);
|
|
pll_fclk = __APP_PLL_425_LRESETN | __APP_PLL_425_ENARST |
|
|
__APP_PLL_425_RSEL200500 | __APP_PLL_425_P0_1(3U) |
|
|
__APP_PLL_425_JITLMT0_1(3U) |
|
|
__APP_PLL_425_CNTLMT0_1(1U);
|
|
if (fcmode) {
|
|
writel(0, (rb + OP_MODE));
|
|
writel(__APP_EMS_CMLCKSEL | __APP_EMS_REFCKBUFEN2 |
|
|
__APP_EMS_CHANNEL_SEL, (rb + ETH_MAC_SER_REG));
|
|
} else {
|
|
writel(__GLOBAL_FCOE_MODE, (rb + OP_MODE));
|
|
writel(__APP_EMS_REFCKBUFEN1, (rb + ETH_MAC_SER_REG));
|
|
}
|
|
writel(BFI_IOC_UNINIT, (rb + BFA_IOC0_STATE_REG));
|
|
writel(BFI_IOC_UNINIT, (rb + BFA_IOC1_STATE_REG));
|
|
writel(0xffffffffU, (rb + HOSTFN0_INT_MSK));
|
|
writel(0xffffffffU, (rb + HOSTFN1_INT_MSK));
|
|
writel(0xffffffffU, (rb + HOSTFN0_INT_STATUS));
|
|
writel(0xffffffffU, (rb + HOSTFN1_INT_STATUS));
|
|
writel(0xffffffffU, (rb + HOSTFN0_INT_MSK));
|
|
writel(0xffffffffU, (rb + HOSTFN1_INT_MSK));
|
|
writel(pll_sclk | __APP_PLL_312_LOGIC_SOFT_RESET,
|
|
rb + APP_PLL_312_CTL_REG);
|
|
writel(pll_fclk | __APP_PLL_425_LOGIC_SOFT_RESET,
|
|
rb + APP_PLL_425_CTL_REG);
|
|
writel(pll_sclk | __APP_PLL_312_LOGIC_SOFT_RESET | __APP_PLL_312_ENABLE,
|
|
rb + APP_PLL_312_CTL_REG);
|
|
writel(pll_fclk | __APP_PLL_425_LOGIC_SOFT_RESET | __APP_PLL_425_ENABLE,
|
|
rb + APP_PLL_425_CTL_REG);
|
|
readl(rb + HOSTFN0_INT_MSK);
|
|
udelay(2000);
|
|
writel(0xffffffffU, (rb + HOSTFN0_INT_STATUS));
|
|
writel(0xffffffffU, (rb + HOSTFN1_INT_STATUS));
|
|
writel(pll_sclk | __APP_PLL_312_ENABLE, rb + APP_PLL_312_CTL_REG);
|
|
writel(pll_fclk | __APP_PLL_425_ENABLE, rb + APP_PLL_425_CTL_REG);
|
|
if (!fcmode) {
|
|
writel(__PMM_1T_RESET_P, (rb + PMM_1T_RESET_REG_P0));
|
|
writel(__PMM_1T_RESET_P, (rb + PMM_1T_RESET_REG_P1));
|
|
}
|
|
r32 = readl((rb + PSS_CTL_REG));
|
|
r32 &= ~__PSS_LMEM_RESET;
|
|
writel(r32, (rb + PSS_CTL_REG));
|
|
udelay(1000);
|
|
if (!fcmode) {
|
|
writel(0, (rb + PMM_1T_RESET_REG_P0));
|
|
writel(0, (rb + PMM_1T_RESET_REG_P1));
|
|
}
|
|
|
|
writel(__EDRAM_BISTR_START, (rb + MBIST_CTL_REG));
|
|
udelay(1000);
|
|
r32 = readl((rb + MBIST_STAT_REG));
|
|
writel(0, (rb + MBIST_CTL_REG));
|
|
return BFA_STATUS_OK;
|
|
}
|