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linux-pinenote/drivers/net/ethernet/brocade/bna/bfa_ioc_ct.c
Ben Hutchings 1aa8b471e0 drivers/net/ethernet: Fix non-kernel-doc comments with kernel-doc start markers 
Convert doxygen (or similar) formatted comments to kernel-doc or
unformatted comment.  Delete a few that are content-free.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 23:13:46 -07:00

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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_ioc.h"
#include "cna.h"
#include "bfi.h"
#include "bfi_reg.h"
#include "bfa_defs.h"
#define bfa_ioc_ct_sync_pos(__ioc) \
((u32) (1 << bfa_ioc_pcifn(__ioc)))
#define BFA_IOC_SYNC_REQD_SH 16
#define bfa_ioc_ct_get_sync_ackd(__val) (__val & 0x0000ffff)
#define bfa_ioc_ct_clear_sync_ackd(__val) (__val & 0xffff0000)
#define bfa_ioc_ct_get_sync_reqd(__val) (__val >> BFA_IOC_SYNC_REQD_SH)
#define bfa_ioc_ct_sync_reqd_pos(__ioc) \
(bfa_ioc_ct_sync_pos(__ioc) << BFA_IOC_SYNC_REQD_SH)
/*
* forward declarations
*/
static bool bfa_ioc_ct_firmware_lock(struct bfa_ioc *ioc);
static void bfa_ioc_ct_firmware_unlock(struct bfa_ioc *ioc);
static void bfa_ioc_ct_reg_init(struct bfa_ioc *ioc);
static void bfa_ioc_ct2_reg_init(struct bfa_ioc *ioc);
static void bfa_ioc_ct_map_port(struct bfa_ioc *ioc);
static void bfa_ioc_ct2_map_port(struct bfa_ioc *ioc);
static void bfa_ioc_ct_isr_mode_set(struct bfa_ioc *ioc, bool msix);
static void bfa_ioc_ct_notify_fail(struct bfa_ioc *ioc);
static void bfa_ioc_ct_ownership_reset(struct bfa_ioc *ioc);
static bool bfa_ioc_ct_sync_start(struct bfa_ioc *ioc);
static void bfa_ioc_ct_sync_join(struct bfa_ioc *ioc);
static void bfa_ioc_ct_sync_leave(struct bfa_ioc *ioc);
static void bfa_ioc_ct_sync_ack(struct bfa_ioc *ioc);
static bool bfa_ioc_ct_sync_complete(struct bfa_ioc *ioc);
static enum bfa_status bfa_ioc_ct_pll_init(void __iomem *rb,
enum bfi_asic_mode asic_mode);
static enum bfa_status bfa_ioc_ct2_pll_init(void __iomem *rb,
enum bfi_asic_mode asic_mode);
static bool bfa_ioc_ct2_lpu_read_stat(struct bfa_ioc *ioc);
static const struct bfa_ioc_hwif nw_hwif_ct = {
.ioc_pll_init = bfa_ioc_ct_pll_init,
.ioc_firmware_lock = bfa_ioc_ct_firmware_lock,
.ioc_firmware_unlock = bfa_ioc_ct_firmware_unlock,
.ioc_reg_init = bfa_ioc_ct_reg_init,
.ioc_map_port = bfa_ioc_ct_map_port,
.ioc_isr_mode_set = bfa_ioc_ct_isr_mode_set,
.ioc_notify_fail = bfa_ioc_ct_notify_fail,
.ioc_ownership_reset = bfa_ioc_ct_ownership_reset,
.ioc_sync_start = bfa_ioc_ct_sync_start,
.ioc_sync_join = bfa_ioc_ct_sync_join,
.ioc_sync_leave = bfa_ioc_ct_sync_leave,
.ioc_sync_ack = bfa_ioc_ct_sync_ack,
.ioc_sync_complete = bfa_ioc_ct_sync_complete,
};
static const struct bfa_ioc_hwif nw_hwif_ct2 = {
.ioc_pll_init = bfa_ioc_ct2_pll_init,
.ioc_firmware_lock = bfa_ioc_ct_firmware_lock,
.ioc_firmware_unlock = bfa_ioc_ct_firmware_unlock,
.ioc_reg_init = bfa_ioc_ct2_reg_init,
.ioc_map_port = bfa_ioc_ct2_map_port,
.ioc_lpu_read_stat = bfa_ioc_ct2_lpu_read_stat,
.ioc_isr_mode_set = NULL,
.ioc_notify_fail = bfa_ioc_ct_notify_fail,
.ioc_ownership_reset = bfa_ioc_ct_ownership_reset,
.ioc_sync_start = bfa_ioc_ct_sync_start,
.ioc_sync_join = bfa_ioc_ct_sync_join,
.ioc_sync_leave = bfa_ioc_ct_sync_leave,
.ioc_sync_ack = bfa_ioc_ct_sync_ack,
.ioc_sync_complete = bfa_ioc_ct_sync_complete,
};
/* Called from bfa_ioc_attach() to map asic specific calls. */
void
bfa_nw_ioc_set_ct_hwif(struct bfa_ioc *ioc)
{
ioc->ioc_hwif = &nw_hwif_ct;
}
void
bfa_nw_ioc_set_ct2_hwif(struct bfa_ioc *ioc)
{
ioc->ioc_hwif = &nw_hwif_ct2;
}
/* Return true if firmware of current driver matches the running firmware. */
static bool
bfa_ioc_ct_firmware_lock(struct bfa_ioc *ioc)
{
enum bfi_ioc_state ioc_fwstate;
u32 usecnt;
struct bfi_ioc_image_hdr fwhdr;
/**
* If bios boot (flash based) -- do not increment usage count
*/
if (bfa_cb_image_get_size(bfa_ioc_asic_gen(ioc)) <
BFA_IOC_FWIMG_MINSZ)
return true;
bfa_nw_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
usecnt = readl(ioc->ioc_regs.ioc_usage_reg);
/**
* If usage count is 0, always return TRUE.
*/
if (usecnt == 0) {
writel(1, ioc->ioc_regs.ioc_usage_reg);
bfa_nw_ioc_sem_release(ioc->ioc_regs.ioc_usage_sem_reg);
writel(0, ioc->ioc_regs.ioc_fail_sync);
return true;
}
ioc_fwstate = readl(ioc->ioc_regs.ioc_fwstate);
/**
* Use count cannot be non-zero and chip in uninitialized state.
*/
BUG_ON(!(ioc_fwstate != BFI_IOC_UNINIT));
/**
* Check if another driver with a different firmware is active
*/
bfa_nw_ioc_fwver_get(ioc, &fwhdr);
if (!bfa_nw_ioc_fwver_cmp(ioc, &fwhdr)) {
bfa_nw_ioc_sem_release(ioc->ioc_regs.ioc_usage_sem_reg);
return false;
}
/**
* Same firmware version. Increment the reference count.
*/
usecnt++;
writel(usecnt, ioc->ioc_regs.ioc_usage_reg);
bfa_nw_ioc_sem_release(ioc->ioc_regs.ioc_usage_sem_reg);
return true;
}
static void
bfa_ioc_ct_firmware_unlock(struct bfa_ioc *ioc)
{
u32 usecnt;
/**
* If bios boot (flash based) -- do not decrement usage count
*/
if (bfa_cb_image_get_size(bfa_ioc_asic_gen(ioc)) <
BFA_IOC_FWIMG_MINSZ)
return;
/**
* decrement usage count
*/
bfa_nw_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
usecnt = readl(ioc->ioc_regs.ioc_usage_reg);
BUG_ON(!(usecnt > 0));
usecnt--;
writel(usecnt, ioc->ioc_regs.ioc_usage_reg);
bfa_nw_ioc_sem_release(ioc->ioc_regs.ioc_usage_sem_reg);
}
/* Notify other functions on HB failure. */
static void
bfa_ioc_ct_notify_fail(struct bfa_ioc *ioc)
{
writel(__FW_INIT_HALT_P, ioc->ioc_regs.ll_halt);
writel(__FW_INIT_HALT_P, ioc->ioc_regs.alt_ll_halt);
/* Wait for halt to take effect */
readl(ioc->ioc_regs.ll_halt);
readl(ioc->ioc_regs.alt_ll_halt);
}
/* Host to LPU mailbox message addresses */
static const struct {
u32 hfn_mbox;
u32 lpu_mbox;
u32 hfn_pgn;
} ct_fnreg[] = {
{ HOSTFN0_LPU_MBOX0_0, LPU_HOSTFN0_MBOX0_0, HOST_PAGE_NUM_FN0 },
{ HOSTFN1_LPU_MBOX0_8, LPU_HOSTFN1_MBOX0_8, HOST_PAGE_NUM_FN1 },
{ HOSTFN2_LPU_MBOX0_0, LPU_HOSTFN2_MBOX0_0, HOST_PAGE_NUM_FN2 },
{ HOSTFN3_LPU_MBOX0_8, LPU_HOSTFN3_MBOX0_8, HOST_PAGE_NUM_FN3 }
};
/* Host <-> LPU mailbox command/status registers - port 0 */
static const struct {
u32 hfn;
u32 lpu;
} ct_p0reg[] = {
{ HOSTFN0_LPU0_CMD_STAT, LPU0_HOSTFN0_CMD_STAT },
{ HOSTFN1_LPU0_CMD_STAT, LPU0_HOSTFN1_CMD_STAT },
{ HOSTFN2_LPU0_CMD_STAT, LPU0_HOSTFN2_CMD_STAT },
{ HOSTFN3_LPU0_CMD_STAT, LPU0_HOSTFN3_CMD_STAT }
};
/* Host <-> LPU mailbox command/status registers - port 1 */
static const struct {
u32 hfn;
u32 lpu;
} ct_p1reg[] = {
{ HOSTFN0_LPU1_CMD_STAT, LPU1_HOSTFN0_CMD_STAT },
{ HOSTFN1_LPU1_CMD_STAT, LPU1_HOSTFN1_CMD_STAT },
{ HOSTFN2_LPU1_CMD_STAT, LPU1_HOSTFN2_CMD_STAT },
{ HOSTFN3_LPU1_CMD_STAT, LPU1_HOSTFN3_CMD_STAT }
};
static const struct {
u32 hfn_mbox;
u32 lpu_mbox;
u32 hfn_pgn;
u32 hfn;
u32 lpu;
u32 lpu_read;
} ct2_reg[] = {
{ CT2_HOSTFN_LPU0_MBOX0, CT2_LPU0_HOSTFN_MBOX0, CT2_HOSTFN_PAGE_NUM,
CT2_HOSTFN_LPU0_CMD_STAT, CT2_LPU0_HOSTFN_CMD_STAT,
CT2_HOSTFN_LPU0_READ_STAT},
{ CT2_HOSTFN_LPU1_MBOX0, CT2_LPU1_HOSTFN_MBOX0, CT2_HOSTFN_PAGE_NUM,
CT2_HOSTFN_LPU1_CMD_STAT, CT2_LPU1_HOSTFN_CMD_STAT,
CT2_HOSTFN_LPU1_READ_STAT},
};
static void
bfa_ioc_ct_reg_init(struct bfa_ioc *ioc)
{
void __iomem *rb;
int pcifn = bfa_ioc_pcifn(ioc);
rb = bfa_ioc_bar0(ioc);
ioc->ioc_regs.hfn_mbox = rb + ct_fnreg[pcifn].hfn_mbox;
ioc->ioc_regs.lpu_mbox = rb + ct_fnreg[pcifn].lpu_mbox;
ioc->ioc_regs.host_page_num_fn = rb + ct_fnreg[pcifn].hfn_pgn;
if (ioc->port_id == 0) {
ioc->ioc_regs.heartbeat = rb + BFA_IOC0_HBEAT_REG;
ioc->ioc_regs.ioc_fwstate = rb + BFA_IOC0_STATE_REG;
ioc->ioc_regs.alt_ioc_fwstate = rb + BFA_IOC1_STATE_REG;
ioc->ioc_regs.hfn_mbox_cmd = rb + ct_p0reg[pcifn].hfn;
ioc->ioc_regs.lpu_mbox_cmd = rb + ct_p0reg[pcifn].lpu;
ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P0;
ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P1;
} else {
ioc->ioc_regs.heartbeat = rb + BFA_IOC1_HBEAT_REG;
ioc->ioc_regs.ioc_fwstate = rb + BFA_IOC1_STATE_REG;
ioc->ioc_regs.alt_ioc_fwstate = rb + BFA_IOC0_STATE_REG;
ioc->ioc_regs.hfn_mbox_cmd = rb + ct_p1reg[pcifn].hfn;
ioc->ioc_regs.lpu_mbox_cmd = rb + ct_p1reg[pcifn].lpu;
ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P1;
ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P0;
}
/*
* PSS control registers
*/
ioc->ioc_regs.pss_ctl_reg = rb + PSS_CTL_REG;
ioc->ioc_regs.pss_err_status_reg = rb + PSS_ERR_STATUS_REG;
ioc->ioc_regs.app_pll_fast_ctl_reg = rb + APP_PLL_LCLK_CTL_REG;
ioc->ioc_regs.app_pll_slow_ctl_reg = rb + APP_PLL_SCLK_CTL_REG;
/*
* IOC semaphore registers and serialization
*/
ioc->ioc_regs.ioc_sem_reg = rb + HOST_SEM0_REG;
ioc->ioc_regs.ioc_usage_sem_reg = rb + HOST_SEM1_REG;
ioc->ioc_regs.ioc_init_sem_reg = rb + HOST_SEM2_REG;
ioc->ioc_regs.ioc_usage_reg = rb + BFA_FW_USE_COUNT;
ioc->ioc_regs.ioc_fail_sync = rb + BFA_IOC_FAIL_SYNC;
/**
* sram memory access
*/
ioc->ioc_regs.smem_page_start = rb + PSS_SMEM_PAGE_START;
ioc->ioc_regs.smem_pg0 = BFI_IOC_SMEM_PG0_CT;
/*
* err set reg : for notification of hb failure in fcmode
*/
ioc->ioc_regs.err_set = (rb + ERR_SET_REG);
}
static void
bfa_ioc_ct2_reg_init(struct bfa_ioc *ioc)
{
void __iomem *rb;
int port = bfa_ioc_portid(ioc);
rb = bfa_ioc_bar0(ioc);
ioc->ioc_regs.hfn_mbox = rb + ct2_reg[port].hfn_mbox;
ioc->ioc_regs.lpu_mbox = rb + ct2_reg[port].lpu_mbox;
ioc->ioc_regs.host_page_num_fn = rb + ct2_reg[port].hfn_pgn;
ioc->ioc_regs.hfn_mbox_cmd = rb + ct2_reg[port].hfn;
ioc->ioc_regs.lpu_mbox_cmd = rb + ct2_reg[port].lpu;
ioc->ioc_regs.lpu_read_stat = rb + ct2_reg[port].lpu_read;
if (port == 0) {
ioc->ioc_regs.heartbeat = rb + CT2_BFA_IOC0_HBEAT_REG;
ioc->ioc_regs.ioc_fwstate = rb + CT2_BFA_IOC0_STATE_REG;
ioc->ioc_regs.alt_ioc_fwstate = rb + CT2_BFA_IOC1_STATE_REG;
ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P0;
ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P1;
} else {
ioc->ioc_regs.heartbeat = rb + CT2_BFA_IOC1_HBEAT_REG;
ioc->ioc_regs.ioc_fwstate = rb + CT2_BFA_IOC1_STATE_REG;
ioc->ioc_regs.alt_ioc_fwstate = rb + CT2_BFA_IOC0_STATE_REG;
ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P1;
ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P0;
}
/*
* PSS control registers
*/
ioc->ioc_regs.pss_ctl_reg = rb + PSS_CTL_REG;
ioc->ioc_regs.pss_err_status_reg = rb + PSS_ERR_STATUS_REG;
ioc->ioc_regs.app_pll_fast_ctl_reg = rb + CT2_APP_PLL_LCLK_CTL_REG;
ioc->ioc_regs.app_pll_slow_ctl_reg = rb + CT2_APP_PLL_SCLK_CTL_REG;
/*
* IOC semaphore registers and serialization
*/
ioc->ioc_regs.ioc_sem_reg = rb + CT2_HOST_SEM0_REG;
ioc->ioc_regs.ioc_usage_sem_reg = rb + CT2_HOST_SEM1_REG;
ioc->ioc_regs.ioc_init_sem_reg = rb + CT2_HOST_SEM2_REG;
ioc->ioc_regs.ioc_usage_reg = rb + CT2_BFA_FW_USE_COUNT;
ioc->ioc_regs.ioc_fail_sync = rb + CT2_BFA_IOC_FAIL_SYNC;
/**
* sram memory access
*/
ioc->ioc_regs.smem_page_start = rb + PSS_SMEM_PAGE_START;
ioc->ioc_regs.smem_pg0 = BFI_IOC_SMEM_PG0_CT;
/*
* err set reg : for notification of hb failure in fcmode
*/
ioc->ioc_regs.err_set = rb + ERR_SET_REG;
}
/* Initialize IOC to port mapping. */
#define FNC_PERS_FN_SHIFT(__fn) ((__fn) * 8)
static void
bfa_ioc_ct_map_port(struct bfa_ioc *ioc)
{
void __iomem *rb = ioc->pcidev.pci_bar_kva;
u32 r32;
/**
* For catapult, base port id on personality register and IOC type
*/
r32 = readl(rb + FNC_PERS_REG);
r32 >>= FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc));
ioc->port_id = (r32 & __F0_PORT_MAP_MK) >> __F0_PORT_MAP_SH;
}
static void
bfa_ioc_ct2_map_port(struct bfa_ioc *ioc)
{
void __iomem *rb = ioc->pcidev.pci_bar_kva;
u32 r32;
r32 = readl(rb + CT2_HOSTFN_PERSONALITY0);
ioc->port_id = ((r32 & __FC_LL_PORT_MAP__MK) >> __FC_LL_PORT_MAP__SH);
}
/* Set interrupt mode for a function: INTX or MSIX */
static void
bfa_ioc_ct_isr_mode_set(struct bfa_ioc *ioc, bool msix)
{
void __iomem *rb = ioc->pcidev.pci_bar_kva;
u32 r32, mode;
r32 = readl(rb + FNC_PERS_REG);
mode = (r32 >> FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc))) &
__F0_INTX_STATUS;
/**
* If already in desired mode, do not change anything
*/
if ((!msix && mode) || (msix && !mode))
return;
if (msix)
mode = __F0_INTX_STATUS_MSIX;
else
mode = __F0_INTX_STATUS_INTA;
r32 &= ~(__F0_INTX_STATUS << FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc)));
r32 |= (mode << FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc)));
writel(r32, rb + FNC_PERS_REG);
}
static bool
bfa_ioc_ct2_lpu_read_stat(struct bfa_ioc *ioc)
{
u32 r32;
r32 = readl(ioc->ioc_regs.lpu_read_stat);
if (r32) {
writel(1, ioc->ioc_regs.lpu_read_stat);
return true;
}
return false;
}
/* MSI-X resource allocation for 1860 with no asic block */
#define HOSTFN_MSIX_DEFAULT 64
#define HOSTFN_MSIX_VT_INDEX_MBOX_ERR 0x30138
#define HOSTFN_MSIX_VT_OFST_NUMVT 0x3013c
#define __MSIX_VT_NUMVT__MK 0x003ff800
#define __MSIX_VT_NUMVT__SH 11
#define __MSIX_VT_NUMVT_(_v) ((_v) << __MSIX_VT_NUMVT__SH)
#define __MSIX_VT_OFST_ 0x000007ff
void
bfa_nw_ioc_ct2_poweron(struct bfa_ioc *ioc)
{
void __iomem *rb = ioc->pcidev.pci_bar_kva;
u32 r32;
r32 = readl(rb + HOSTFN_MSIX_VT_OFST_NUMVT);
if (r32 & __MSIX_VT_NUMVT__MK) {
writel(r32 & __MSIX_VT_OFST_,
rb + HOSTFN_MSIX_VT_INDEX_MBOX_ERR);
return;
}
writel(__MSIX_VT_NUMVT_(HOSTFN_MSIX_DEFAULT - 1) |
HOSTFN_MSIX_DEFAULT * bfa_ioc_pcifn(ioc),
rb + HOSTFN_MSIX_VT_OFST_NUMVT);
writel(HOSTFN_MSIX_DEFAULT * bfa_ioc_pcifn(ioc),
rb + HOSTFN_MSIX_VT_INDEX_MBOX_ERR);
}
/* Cleanup hw semaphore and usecnt registers */
static void
bfa_ioc_ct_ownership_reset(struct bfa_ioc *ioc)
{
bfa_nw_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
writel(0, ioc->ioc_regs.ioc_usage_reg);
bfa_nw_ioc_sem_release(ioc->ioc_regs.ioc_usage_sem_reg);
/*
* Read the hw sem reg to make sure that it is locked
* before we clear it. If it is not locked, writing 1
* will lock it instead of clearing it.
*/
readl(ioc->ioc_regs.ioc_sem_reg);
bfa_nw_ioc_hw_sem_release(ioc);
}
/* Synchronized IOC failure processing routines */
static bool
bfa_ioc_ct_sync_start(struct bfa_ioc *ioc)
{
u32 r32 = readl(ioc->ioc_regs.ioc_fail_sync);
u32 sync_reqd = bfa_ioc_ct_get_sync_reqd(r32);
/*
* Driver load time. If the sync required bit for this PCI fn
* is set, it is due to an unclean exit by the driver for this
* PCI fn in the previous incarnation. Whoever comes here first
* should clean it up, no matter which PCI fn.
*/
if (sync_reqd & bfa_ioc_ct_sync_pos(ioc)) {
writel(0, ioc->ioc_regs.ioc_fail_sync);
writel(1, ioc->ioc_regs.ioc_usage_reg);
writel(BFI_IOC_UNINIT, ioc->ioc_regs.ioc_fwstate);
writel(BFI_IOC_UNINIT, ioc->ioc_regs.alt_ioc_fwstate);
return true;
}
return bfa_ioc_ct_sync_complete(ioc);
}
/* Synchronized IOC failure processing routines */
static void
bfa_ioc_ct_sync_join(struct bfa_ioc *ioc)
{
u32 r32 = readl(ioc->ioc_regs.ioc_fail_sync);
u32 sync_pos = bfa_ioc_ct_sync_reqd_pos(ioc);
writel((r32 | sync_pos), ioc->ioc_regs.ioc_fail_sync);
}
static void
bfa_ioc_ct_sync_leave(struct bfa_ioc *ioc)
{
u32 r32 = readl(ioc->ioc_regs.ioc_fail_sync);
u32 sync_msk = bfa_ioc_ct_sync_reqd_pos(ioc) |
bfa_ioc_ct_sync_pos(ioc);
writel((r32 & ~sync_msk), ioc->ioc_regs.ioc_fail_sync);
}
static void
bfa_ioc_ct_sync_ack(struct bfa_ioc *ioc)
{
u32 r32 = readl(ioc->ioc_regs.ioc_fail_sync);
writel((r32 | bfa_ioc_ct_sync_pos(ioc)), ioc->ioc_regs.ioc_fail_sync);
}
static bool
bfa_ioc_ct_sync_complete(struct bfa_ioc *ioc)
{
u32 r32 = readl(ioc->ioc_regs.ioc_fail_sync);
u32 sync_reqd = bfa_ioc_ct_get_sync_reqd(r32);
u32 sync_ackd = bfa_ioc_ct_get_sync_ackd(r32);
u32 tmp_ackd;
if (sync_ackd == 0)
return true;
/**
* The check below is to see whether any other PCI fn
* has reinitialized the ASIC (reset sync_ackd bits)
* and failed again while this IOC was waiting for hw
* semaphore (in bfa_iocpf_sm_semwait()).
*/
tmp_ackd = sync_ackd;
if ((sync_reqd & bfa_ioc_ct_sync_pos(ioc)) &&
!(sync_ackd & bfa_ioc_ct_sync_pos(ioc)))
sync_ackd |= bfa_ioc_ct_sync_pos(ioc);
if (sync_reqd == sync_ackd) {
writel(bfa_ioc_ct_clear_sync_ackd(r32),
ioc->ioc_regs.ioc_fail_sync);
writel(BFI_IOC_FAIL, ioc->ioc_regs.ioc_fwstate);
writel(BFI_IOC_FAIL, ioc->ioc_regs.alt_ioc_fwstate);
return 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 false;
}
static enum bfa_status
bfa_ioc_ct_pll_init(void __iomem *rb, enum bfi_asic_mode asic_mode)
{
u32 pll_sclk, pll_fclk, r32;
bool fcmode = (asic_mode == BFI_ASIC_MODE_FC);
pll_sclk = __APP_PLL_SCLK_LRESETN | __APP_PLL_SCLK_ENARST |
__APP_PLL_SCLK_RSEL200500 | __APP_PLL_SCLK_P0_1(3U) |
__APP_PLL_SCLK_JITLMT0_1(3U) |
__APP_PLL_SCLK_CNTLMT0_1(1U);
pll_fclk = __APP_PLL_LCLK_LRESETN | __APP_PLL_LCLK_ENARST |
__APP_PLL_LCLK_RSEL200500 | __APP_PLL_LCLK_P0_1(3U) |
__APP_PLL_LCLK_JITLMT0_1(3U) |
__APP_PLL_LCLK_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_SCLK_LOGIC_SOFT_RESET,
rb + APP_PLL_SCLK_CTL_REG);
writel(pll_fclk |
__APP_PLL_LCLK_LOGIC_SOFT_RESET,
rb + APP_PLL_LCLK_CTL_REG);
writel(pll_sclk |
__APP_PLL_SCLK_LOGIC_SOFT_RESET | __APP_PLL_SCLK_ENABLE,
rb + APP_PLL_SCLK_CTL_REG);
writel(pll_fclk |
__APP_PLL_LCLK_LOGIC_SOFT_RESET | __APP_PLL_LCLK_ENABLE,
rb + APP_PLL_LCLK_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_SCLK_ENABLE,
rb + APP_PLL_SCLK_CTL_REG);
writel(pll_fclk |
__APP_PLL_LCLK_ENABLE,
rb + APP_PLL_LCLK_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;
}
static void
bfa_ioc_ct2_sclk_init(void __iomem *rb)
{
u32 r32;
/*
* put s_clk PLL and PLL FSM in reset
*/
r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
r32 &= ~(__APP_PLL_SCLK_ENABLE | __APP_PLL_SCLK_LRESETN);
r32 |= (__APP_PLL_SCLK_ENARST | __APP_PLL_SCLK_BYPASS |
__APP_PLL_SCLK_LOGIC_SOFT_RESET);
writel(r32, (rb + CT2_APP_PLL_SCLK_CTL_REG));
/*
* Ignore mode and program for the max clock (which is FC16)
* Firmware/NFC will do the PLL init appropiately
*/
r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
r32 &= ~(__APP_PLL_SCLK_REFCLK_SEL | __APP_PLL_SCLK_CLK_DIV2);
writel(r32, (rb + CT2_APP_PLL_SCLK_CTL_REG));
/*
* while doing PLL init dont clock gate ethernet subsystem
*/
r32 = readl((rb + CT2_CHIP_MISC_PRG));
writel((r32 | __ETH_CLK_ENABLE_PORT0),
(rb + CT2_CHIP_MISC_PRG));
r32 = readl((rb + CT2_PCIE_MISC_REG));
writel((r32 | __ETH_CLK_ENABLE_PORT1),
(rb + CT2_PCIE_MISC_REG));
/*
* set sclk value
*/
r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
r32 &= (__P_SCLK_PLL_LOCK | __APP_PLL_SCLK_REFCLK_SEL |
__APP_PLL_SCLK_CLK_DIV2);
writel(r32 | 0x1061731b, (rb + CT2_APP_PLL_SCLK_CTL_REG));
/*
* poll for s_clk lock or delay 1ms
*/
udelay(1000);
/*
* Dont do clock gating for ethernet subsystem, firmware/NFC will
* do this appropriately
*/
}
static void
bfa_ioc_ct2_lclk_init(void __iomem *rb)
{
u32 r32;
/*
* put l_clk PLL and PLL FSM in reset
*/
r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
r32 &= ~(__APP_PLL_LCLK_ENABLE | __APP_PLL_LCLK_LRESETN);
r32 |= (__APP_PLL_LCLK_ENARST | __APP_PLL_LCLK_BYPASS |
__APP_PLL_LCLK_LOGIC_SOFT_RESET);
writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
/*
* set LPU speed (set for FC16 which will work for other modes)
*/
r32 = readl((rb + CT2_CHIP_MISC_PRG));
writel(r32, (rb + CT2_CHIP_MISC_PRG));
/*
* set LPU half speed (set for FC16 which will work for other modes)
*/
r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
/*
* set lclk for mode (set for FC16)
*/
r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
r32 &= (__P_LCLK_PLL_LOCK | __APP_LPUCLK_HALFSPEED);
r32 |= 0x20c1731b;
writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
/*
* poll for s_clk lock or delay 1ms
*/
udelay(1000);
}
static void
bfa_ioc_ct2_mem_init(void __iomem *rb)
{
u32 r32;
r32 = readl((rb + PSS_CTL_REG));
r32 &= ~__PSS_LMEM_RESET;
writel(r32, (rb + PSS_CTL_REG));
udelay(1000);
writel(__EDRAM_BISTR_START, (rb + CT2_MBIST_CTL_REG));
udelay(1000);
writel(0, (rb + CT2_MBIST_CTL_REG));
}
static void
bfa_ioc_ct2_mac_reset(void __iomem *rb)
{
volatile u32 r32;
bfa_ioc_ct2_sclk_init(rb);
bfa_ioc_ct2_lclk_init(rb);
/*
* release soft reset on s_clk & l_clk
*/
r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
writel((r32 & ~__APP_PLL_SCLK_LOGIC_SOFT_RESET),
(rb + CT2_APP_PLL_SCLK_CTL_REG));
/*
* release soft reset on s_clk & l_clk
*/
r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
writel((r32 & ~__APP_PLL_LCLK_LOGIC_SOFT_RESET),
(rb + CT2_APP_PLL_LCLK_CTL_REG));
/* put port0, port1 MAC & AHB in reset */
writel((__CSI_MAC_RESET | __CSI_MAC_AHB_RESET),
(rb + CT2_CSI_MAC_CONTROL_REG(0)));
writel((__CSI_MAC_RESET | __CSI_MAC_AHB_RESET),
(rb + CT2_CSI_MAC_CONTROL_REG(1)));
}
#define CT2_NFC_MAX_DELAY 1000
#define CT2_NFC_VER_VALID 0x143
#define BFA_IOC_PLL_POLL 1000000
static bool
bfa_ioc_ct2_nfc_halted(void __iomem *rb)
{
volatile u32 r32;
r32 = readl(rb + CT2_NFC_CSR_SET_REG);
if (r32 & __NFC_CONTROLLER_HALTED)
return true;
return false;
}
static void
bfa_ioc_ct2_nfc_resume(void __iomem *rb)
{
volatile u32 r32;
int i;
writel(__HALT_NFC_CONTROLLER, rb + CT2_NFC_CSR_CLR_REG);
for (i = 0; i < CT2_NFC_MAX_DELAY; i++) {
r32 = readl(rb + CT2_NFC_CSR_SET_REG);
if (!(r32 & __NFC_CONTROLLER_HALTED))
return;
udelay(1000);
}
BUG_ON(1);
}
static enum bfa_status
bfa_ioc_ct2_pll_init(void __iomem *rb, enum bfi_asic_mode asic_mode)
{
volatile u32 wgn, r32;
u32 nfc_ver, i;
wgn = readl(rb + CT2_WGN_STATUS);
nfc_ver = readl(rb + CT2_RSC_GPR15_REG);
if ((wgn == (__A2T_AHB_LOAD | __WGN_READY)) &&
(nfc_ver >= CT2_NFC_VER_VALID)) {
if (bfa_ioc_ct2_nfc_halted(rb))
bfa_ioc_ct2_nfc_resume(rb);
writel(__RESET_AND_START_SCLK_LCLK_PLLS,
rb + CT2_CSI_FW_CTL_SET_REG);
for (i = 0; i < BFA_IOC_PLL_POLL; i++) {
r32 = readl(rb + CT2_APP_PLL_LCLK_CTL_REG);
if (r32 & __RESET_AND_START_SCLK_LCLK_PLLS)
break;
}
BUG_ON(!(r32 & __RESET_AND_START_SCLK_LCLK_PLLS));
for (i = 0; i < BFA_IOC_PLL_POLL; i++) {
r32 = readl(rb + CT2_APP_PLL_LCLK_CTL_REG);
if (!(r32 & __RESET_AND_START_SCLK_LCLK_PLLS))
break;
}
BUG_ON(r32 & __RESET_AND_START_SCLK_LCLK_PLLS);
udelay(1000);
r32 = readl(rb + CT2_CSI_FW_CTL_REG);
BUG_ON(r32 & __RESET_AND_START_SCLK_LCLK_PLLS);
} else {
writel(__HALT_NFC_CONTROLLER, (rb + CT2_NFC_CSR_SET_REG));
for (i = 0; i < CT2_NFC_MAX_DELAY; i++) {
r32 = readl(rb + CT2_NFC_CSR_SET_REG);
if (r32 & __NFC_CONTROLLER_HALTED)
break;
udelay(1000);
}
bfa_ioc_ct2_mac_reset(rb);
bfa_ioc_ct2_sclk_init(rb);
bfa_ioc_ct2_lclk_init(rb);
/* release soft reset on s_clk & l_clk */
r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
writel(r32 & ~__APP_PLL_SCLK_LOGIC_SOFT_RESET,
rb + CT2_APP_PLL_SCLK_CTL_REG);
r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
writel(r32 & ~__APP_PLL_LCLK_LOGIC_SOFT_RESET,
rb + CT2_APP_PLL_LCLK_CTL_REG);
}
/* Announce flash device presence, if flash was corrupted. */
if (wgn == (__WGN_READY | __GLBL_PF_VF_CFG_RDY)) {
r32 = readl((rb + PSS_GPIO_OUT_REG));
writel(r32 & ~1, rb + PSS_GPIO_OUT_REG);
r32 = readl((rb + PSS_GPIO_OE_REG));
writel(r32 | 1, rb + PSS_GPIO_OE_REG);
}
/*
* Mask the interrupts and clear any
* pending interrupts left by BIOS/EFI
*/
writel(1, (rb + CT2_LPU0_HOSTFN_MBOX0_MSK));
writel(1, (rb + CT2_LPU1_HOSTFN_MBOX0_MSK));
/* For first time initialization, no need to clear interrupts */
r32 = readl(rb + HOST_SEM5_REG);
if (r32 & 0x1) {
r32 = readl((rb + CT2_LPU0_HOSTFN_CMD_STAT));
if (r32 == 1) {
writel(1, (rb + CT2_LPU0_HOSTFN_CMD_STAT));
readl((rb + CT2_LPU0_HOSTFN_CMD_STAT));
}
r32 = readl((rb + CT2_LPU1_HOSTFN_CMD_STAT));
if (r32 == 1) {
writel(1, (rb + CT2_LPU1_HOSTFN_CMD_STAT));
readl((rb + CT2_LPU1_HOSTFN_CMD_STAT));
}
}
bfa_ioc_ct2_mem_init(rb);
writel(BFI_IOC_UNINIT, (rb + CT2_BFA_IOC0_STATE_REG));
writel(BFI_IOC_UNINIT, (rb + CT2_BFA_IOC1_STATE_REG));
return BFA_STATUS_OK;
}
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