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linux/drivers/scsi/bfa/bfa_ioc_ct.c
Vijaya Mohan Guvva e1aaab89de [SCSI] bfa: Fix 1860 port initialize when ATC is enabled 
On Xen kernels, if ATC (address translation cache) is enabled, the
first PCIe DMA read from the adapter fails with an error. This is due to
a bug ASIC, which leads to a failure of 1860 ports to be initialised.

This patch includes the fix to disable Invalidated Tag Match Enable
capability by setting the bit 26 of CHIP_MISC_PRG to 0, by default it is
set to 1.

Signed-off-by: Anil Gurumurthy <agurumur@brocade.com>
Signed-off-by: Vijaya Mohan Guvva <vmohan@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-06-26 11:59:02 -07:00

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/*
* 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_ioc.h"
#include "bfi_reg.h"
#include "bfa_defs.h"
BFA_TRC_FILE(CNA, IOC_CT);
#define bfa_ioc_ct_sync_pos(__ioc) \
((uint32_t) (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 bfa_boolean_t bfa_ioc_ct_firmware_lock(struct bfa_ioc_s *ioc);
static void bfa_ioc_ct_firmware_unlock(struct bfa_ioc_s *ioc);
static void bfa_ioc_ct_notify_fail(struct bfa_ioc_s *ioc);
static void bfa_ioc_ct_ownership_reset(struct bfa_ioc_s *ioc);
static bfa_boolean_t bfa_ioc_ct_sync_start(struct bfa_ioc_s *ioc);
static void bfa_ioc_ct_sync_join(struct bfa_ioc_s *ioc);
static void bfa_ioc_ct_sync_leave(struct bfa_ioc_s *ioc);
static void bfa_ioc_ct_sync_ack(struct bfa_ioc_s *ioc);
static bfa_boolean_t bfa_ioc_ct_sync_complete(struct bfa_ioc_s *ioc);
static struct bfa_ioc_hwif_s hwif_ct;
static struct bfa_ioc_hwif_s hwif_ct2;
/*
* Return true if firmware of current driver matches the running firmware.
*/
static bfa_boolean_t
bfa_ioc_ct_firmware_lock(struct bfa_ioc_s *ioc)
{
enum bfi_ioc_state ioc_fwstate;
u32 usecnt;
struct bfi_ioc_image_hdr_s fwhdr;
bfa_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);
readl(ioc->ioc_regs.ioc_usage_sem_reg);
writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
writel(0, ioc->ioc_regs.ioc_fail_sync);
bfa_trc(ioc, usecnt);
return BFA_TRUE;
}
ioc_fwstate = readl(ioc->ioc_regs.ioc_fwstate);
bfa_trc(ioc, ioc_fwstate);
/*
* Use count cannot be non-zero and chip in uninitialized state.
*/
WARN_ON(ioc_fwstate == BFI_IOC_UNINIT);
/*
* Check if another driver with a different firmware is active
*/
bfa_ioc_fwver_get(ioc, &fwhdr);
if (!bfa_ioc_fwver_cmp(ioc, &fwhdr)) {
readl(ioc->ioc_regs.ioc_usage_sem_reg);
writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
bfa_trc(ioc, usecnt);
return BFA_FALSE;
}
/*
* Same firmware version. Increment the reference count.
*/
usecnt++;
writel(usecnt, ioc->ioc_regs.ioc_usage_reg);
readl(ioc->ioc_regs.ioc_usage_sem_reg);
writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
bfa_trc(ioc, usecnt);
return BFA_TRUE;
}
static void
bfa_ioc_ct_firmware_unlock(struct bfa_ioc_s *ioc)
{
u32 usecnt;
/*
* decrement usage count
*/
bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
usecnt = readl(ioc->ioc_regs.ioc_usage_reg);
WARN_ON(usecnt <= 0);
usecnt--;
writel(usecnt, ioc->ioc_regs.ioc_usage_reg);
bfa_trc(ioc, usecnt);
readl(ioc->ioc_regs.ioc_usage_sem_reg);
writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
}
/*
* Notify other functions on HB failure.
*/
static void
bfa_ioc_ct_notify_fail(struct bfa_ioc_s *ioc)
{
if (bfa_ioc_is_cna(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);
} else {
writel(~0U, ioc->ioc_regs.err_set);
readl(ioc->ioc_regs.err_set);
}
}
/*
* Host to LPU mailbox message addresses
*/
static struct { u32 hfn_mbox, lpu_mbox, 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 struct { u32 hfn, 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 struct { u32 hfn, 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 struct { uint32_t hfn_mbox, lpu_mbox, hfn_pgn, hfn, lpu, 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_s *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_s *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_s *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;
bfa_trc(ioc, bfa_ioc_pcifn(ioc));
bfa_trc(ioc, ioc->port_id);
}
static void
bfa_ioc_ct2_map_port(struct bfa_ioc_s *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);
bfa_trc(ioc, bfa_ioc_pcifn(ioc));
bfa_trc(ioc, ioc->port_id);
}
/*
* Set interrupt mode for a function: INTX or MSIX
*/
static void
bfa_ioc_ct_isr_mode_set(struct bfa_ioc_s *ioc, bfa_boolean_t msix)
{
void __iomem *rb = ioc->pcidev.pci_bar_kva;
u32 r32, mode;
r32 = readl(rb + FNC_PERS_REG);
bfa_trc(ioc, r32);
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)));
bfa_trc(ioc, r32);
writel(r32, rb + FNC_PERS_REG);
}
bfa_boolean_t
bfa_ioc_ct2_lpu_read_stat(struct bfa_ioc_s *ioc)
{
u32 r32;
r32 = readl(ioc->ioc_regs.lpu_read_stat);
if (r32) {
writel(1, ioc->ioc_regs.lpu_read_stat);
return BFA_TRUE;
}
return BFA_FALSE;
}
/*
* Cleanup hw semaphore and usecnt registers
*/
static void
bfa_ioc_ct_ownership_reset(struct bfa_ioc_s *ioc)
{
bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
writel(0, ioc->ioc_regs.ioc_usage_reg);
readl(ioc->ioc_regs.ioc_usage_sem_reg);
writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
writel(0, ioc->ioc_regs.ioc_fail_sync);
/*
* 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);
writel(1, ioc->ioc_regs.ioc_sem_reg);
}
static bfa_boolean_t
bfa_ioc_ct_sync_start(struct bfa_ioc_s *ioc)
{
uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
uint32_t 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 BFA_TRUE;
}
return bfa_ioc_ct_sync_complete(ioc);
}
/*
* Synchronized IOC failure processing routines
*/
static void
bfa_ioc_ct_sync_join(struct bfa_ioc_s *ioc)
{
uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
uint32_t 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_s *ioc)
{
uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
uint32_t 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_s *ioc)
{
uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
writel((r32 | bfa_ioc_ct_sync_pos(ioc)),
ioc->ioc_regs.ioc_fail_sync);
}
static bfa_boolean_t
bfa_ioc_ct_sync_complete(struct bfa_ioc_s *ioc)
{
uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
uint32_t sync_reqd = bfa_ioc_ct_get_sync_reqd(r32);
uint32_t sync_ackd = bfa_ioc_ct_get_sync_ackd(r32);
uint32_t tmp_ackd;
if (sync_ackd == 0)
return BFA_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 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;
}
/**
* Called from bfa_ioc_attach() to map asic specific calls.
*/
static void
bfa_ioc_set_ctx_hwif(struct bfa_ioc_s *ioc, struct bfa_ioc_hwif_s *hwif)
{
hwif->ioc_firmware_lock = bfa_ioc_ct_firmware_lock;
hwif->ioc_firmware_unlock = bfa_ioc_ct_firmware_unlock;
hwif->ioc_notify_fail = bfa_ioc_ct_notify_fail;
hwif->ioc_ownership_reset = bfa_ioc_ct_ownership_reset;
hwif->ioc_sync_start = bfa_ioc_ct_sync_start;
hwif->ioc_sync_join = bfa_ioc_ct_sync_join;
hwif->ioc_sync_leave = bfa_ioc_ct_sync_leave;
hwif->ioc_sync_ack = bfa_ioc_ct_sync_ack;
hwif->ioc_sync_complete = bfa_ioc_ct_sync_complete;
}
/**
* Called from bfa_ioc_attach() to map asic specific calls.
*/
void
bfa_ioc_set_ct_hwif(struct bfa_ioc_s *ioc)
{
bfa_ioc_set_ctx_hwif(ioc, &hwif_ct);
hwif_ct.ioc_pll_init = bfa_ioc_ct_pll_init;
hwif_ct.ioc_reg_init = bfa_ioc_ct_reg_init;
hwif_ct.ioc_map_port = bfa_ioc_ct_map_port;
hwif_ct.ioc_isr_mode_set = bfa_ioc_ct_isr_mode_set;
ioc->ioc_hwif = &hwif_ct;
}
/**
* Called from bfa_ioc_attach() to map asic specific calls.
*/
void
bfa_ioc_set_ct2_hwif(struct bfa_ioc_s *ioc)
{
bfa_ioc_set_ctx_hwif(ioc, &hwif_ct2);
hwif_ct2.ioc_pll_init = bfa_ioc_ct2_pll_init;
hwif_ct2.ioc_reg_init = bfa_ioc_ct2_reg_init;
hwif_ct2.ioc_map_port = bfa_ioc_ct2_map_port;
hwif_ct2.ioc_lpu_read_stat = bfa_ioc_ct2_lpu_read_stat;
hwif_ct2.ioc_isr_mode_set = NULL;
ioc->ioc_hwif = &hwif_ct2;
}
/*
* Workaround for MSI-X resource allocation for catapult-2 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_ioc_ct2_poweron(struct bfa_ioc_s *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);
}
bfa_status_t
bfa_ioc_ct_pll_init(void __iomem *rb, enum bfi_asic_mode mode)
{
u32 pll_sclk, pll_fclk, r32;
bfa_boolean_t fcmode = (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);
}
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));
}
void
bfa_ioc_ct2_mac_reset(void __iomem *rb)
{
/* 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));
}
static void
bfa_ioc_ct2_enable_flash(void __iomem *rb)
{
u32 r32;
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));
}
#define CT2_NFC_MAX_DELAY 1000
#define CT2_NFC_PAUSE_MAX_DELAY 4000
#define CT2_NFC_VER_VALID 0x147
#define CT2_NFC_STATE_RUNNING 0x20000001
#define BFA_IOC_PLL_POLL 1000000
static bfa_boolean_t
bfa_ioc_ct2_nfc_halted(void __iomem *rb)
{
u32 r32;
r32 = readl(rb + CT2_NFC_CSR_SET_REG);
if (r32 & __NFC_CONTROLLER_HALTED)
return BFA_TRUE;
return BFA_FALSE;
}
static void
bfa_ioc_ct2_nfc_halt(void __iomem *rb)
{
int i;
writel(__HALT_NFC_CONTROLLER, rb + CT2_NFC_CSR_SET_REG);
for (i = 0; i < CT2_NFC_MAX_DELAY; i++) {
if (bfa_ioc_ct2_nfc_halted(rb))
break;
udelay(1000);
}
WARN_ON(!bfa_ioc_ct2_nfc_halted(rb));
}
static void
bfa_ioc_ct2_nfc_resume(void __iomem *rb)
{
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);
}
WARN_ON(1);
}
static void
bfa_ioc_ct2_clk_reset(void __iomem *rb)
{
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));
r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
writel(r32 & ~__APP_PLL_LCLK_LOGIC_SOFT_RESET,
(rb + CT2_APP_PLL_LCLK_CTL_REG));
}
static void
bfa_ioc_ct2_nfc_clk_reset(void __iomem *rb)
{
u32 r32, i;
r32 = readl((rb + PSS_CTL_REG));
r32 |= (__PSS_LPU0_RESET | __PSS_LPU1_RESET);
writel(r32, (rb + PSS_CTL_REG));
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_NFC_FLASH_STS_REG);
if ((r32 & __FLASH_PLL_INIT_AND_RESET_IN_PROGRESS))
break;
}
WARN_ON(!(r32 & __FLASH_PLL_INIT_AND_RESET_IN_PROGRESS));
for (i = 0; i < BFA_IOC_PLL_POLL; i++) {
r32 = readl(rb + CT2_NFC_FLASH_STS_REG);
if (!(r32 & __FLASH_PLL_INIT_AND_RESET_IN_PROGRESS))
break;
}
WARN_ON((r32 & __FLASH_PLL_INIT_AND_RESET_IN_PROGRESS));
r32 = readl(rb + CT2_CSI_FW_CTL_REG);
WARN_ON((r32 & __RESET_AND_START_SCLK_LCLK_PLLS));
}
static void
bfa_ioc_ct2_wait_till_nfc_running(void __iomem *rb)
{
u32 r32;
int i;
if (bfa_ioc_ct2_nfc_halted(rb))
bfa_ioc_ct2_nfc_resume(rb);
for (i = 0; i < CT2_NFC_PAUSE_MAX_DELAY; i++) {
r32 = readl(rb + CT2_NFC_STS_REG);
if (r32 == CT2_NFC_STATE_RUNNING)
return;
udelay(1000);
}
r32 = readl(rb + CT2_NFC_STS_REG);
WARN_ON(!(r32 == CT2_NFC_STATE_RUNNING));
}
bfa_status_t
bfa_ioc_ct2_pll_init(void __iomem *rb, enum bfi_asic_mode mode)
{
u32 wgn, r32, nfc_ver;
wgn = readl(rb + CT2_WGN_STATUS);
if (wgn == (__WGN_READY | __GLBL_PF_VF_CFG_RDY)) {
/*
* If flash is corrupted, enable flash explicitly
*/
bfa_ioc_ct2_clk_reset(rb);
bfa_ioc_ct2_enable_flash(rb);
bfa_ioc_ct2_mac_reset(rb);
bfa_ioc_ct2_clk_reset(rb);
bfa_ioc_ct2_enable_flash(rb);
} else {
nfc_ver = readl(rb + CT2_RSC_GPR15_REG);
if ((nfc_ver >= CT2_NFC_VER_VALID) &&
(wgn == (__A2T_AHB_LOAD | __WGN_READY))) {
bfa_ioc_ct2_wait_till_nfc_running(rb);
bfa_ioc_ct2_nfc_clk_reset(rb);
} else {
bfa_ioc_ct2_nfc_halt(rb);
bfa_ioc_ct2_clk_reset(rb);
bfa_ioc_ct2_mac_reset(rb);
bfa_ioc_ct2_clk_reset(rb);
}
}
/*
* The very first PCIe DMA Read done by LPU fails with a fatal error,
* when Address Translation Cache (ATC) has been enabled by system BIOS.
*
* Workaround:
* Disable Invalidated Tag Match Enable capability by setting the bit 26
* of CHIP_MISC_PRG to 0, by default it is set to 1.
*/
r32 = readl(rb + CT2_CHIP_MISC_PRG);
writel((r32 & 0xfbffffff), (rb + CT2_CHIP_MISC_PRG));
/*
* 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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