diff options
Diffstat (limited to 'drivers/scsi/bfa/bfa_ioc_ct.c')
| -rw-r--r-- | drivers/scsi/bfa/bfa_ioc_ct.c | 120 |
1 files changed, 108 insertions, 12 deletions
diff --git a/drivers/scsi/bfa/bfa_ioc_ct.c b/drivers/scsi/bfa/bfa_ioc_ct.c index 115730c0aa77..008d129ddfcd 100644 --- a/drivers/scsi/bfa/bfa_ioc_ct.c +++ b/drivers/scsi/bfa/bfa_ioc_ct.c @@ -15,12 +15,22 @@ * General Public License for more details. */ +#include "bfad_drv.h" #include "bfa_ioc.h" #include "bfi_ctreg.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 */ @@ -29,10 +39,14 @@ static void bfa_ioc_ct_firmware_unlock(struct bfa_ioc_s *ioc); static void bfa_ioc_ct_reg_init(struct bfa_ioc_s *ioc); static void bfa_ioc_ct_map_port(struct bfa_ioc_s *ioc); static void bfa_ioc_ct_isr_mode_set(struct bfa_ioc_s *ioc, bfa_boolean_t msix); -static void bfa_ioc_ct_notify_hbfail(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 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); -struct bfa_ioc_hwif_s hwif_ct; +static struct bfa_ioc_hwif_s hwif_ct; /* * Called from bfa_ioc_attach() to map asic specific calls. @@ -46,8 +60,12 @@ bfa_ioc_set_ct_hwif(struct bfa_ioc_s *ioc) 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; - hwif_ct.ioc_notify_hbfail = bfa_ioc_ct_notify_hbfail; + hwif_ct.ioc_notify_fail = bfa_ioc_ct_notify_fail; hwif_ct.ioc_ownership_reset = bfa_ioc_ct_ownership_reset; + hwif_ct.ioc_sync_join = bfa_ioc_ct_sync_join; + hwif_ct.ioc_sync_leave = bfa_ioc_ct_sync_leave; + hwif_ct.ioc_sync_ack = bfa_ioc_ct_sync_ack; + hwif_ct.ioc_sync_complete = bfa_ioc_ct_sync_complete; ioc->ioc_hwif = &hwif_ct; } @@ -83,7 +101,8 @@ bfa_ioc_ct_firmware_lock(struct bfa_ioc_s *ioc) */ if (usecnt == 0) { writel(1, ioc->ioc_regs.ioc_usage_reg); - bfa_ioc_sem_release(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; } @@ -94,14 +113,14 @@ bfa_ioc_ct_firmware_lock(struct bfa_ioc_s *ioc) /* * Use count cannot be non-zero and chip in uninitialized state. */ - bfa_assert(ioc_fwstate != BFI_IOC_UNINIT); + 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)) { - bfa_ioc_sem_release(ioc->ioc_regs.ioc_usage_sem_reg); + writel(1, ioc->ioc_regs.ioc_usage_sem_reg); bfa_trc(ioc, usecnt); return BFA_FALSE; } @@ -111,7 +130,7 @@ bfa_ioc_ct_firmware_lock(struct bfa_ioc_s *ioc) */ usecnt++; writel(usecnt, ioc->ioc_regs.ioc_usage_reg); - bfa_ioc_sem_release(ioc->ioc_regs.ioc_usage_sem_reg); + writel(1, ioc->ioc_regs.ioc_usage_sem_reg); bfa_trc(ioc, usecnt); return BFA_TRUE; } @@ -139,25 +158,27 @@ bfa_ioc_ct_firmware_unlock(struct bfa_ioc_s *ioc) */ bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg); usecnt = readl(ioc->ioc_regs.ioc_usage_reg); - bfa_assert(usecnt > 0); + WARN_ON(usecnt <= 0); usecnt--; writel(usecnt, ioc->ioc_regs.ioc_usage_reg); bfa_trc(ioc, usecnt); - bfa_ioc_sem_release(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_hbfail(struct bfa_ioc_s *ioc) +bfa_ioc_ct_notify_fail(struct bfa_ioc_s *ioc) { if (ioc->cna) { 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(__PSS_ERR_STATUS_SET, ioc->ioc_regs.err_set); readl(ioc->ioc_regs.err_set); @@ -209,15 +230,19 @@ bfa_ioc_ct_reg_init(struct bfa_ioc_s *ioc) 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 + iocreg_mbcmd_p0[pcifn].hfn; ioc->ioc_regs.lpu_mbox_cmd = rb + iocreg_mbcmd_p0[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 + iocreg_mbcmd_p1[pcifn].hfn; ioc->ioc_regs.lpu_mbox_cmd = rb + iocreg_mbcmd_p1[pcifn].lpu; ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P1; + ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P0; } /* @@ -235,6 +260,7 @@ bfa_ioc_ct_reg_init(struct bfa_ioc_s *ioc) 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 @@ -313,7 +339,7 @@ bfa_ioc_ct_ownership_reset(struct bfa_ioc_s *ioc) if (ioc->cna) { bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg); writel(0, ioc->ioc_regs.ioc_usage_reg); - bfa_ioc_sem_release(ioc->ioc_regs.ioc_usage_sem_reg); + writel(1, ioc->ioc_regs.ioc_usage_sem_reg); } /* @@ -322,10 +348,80 @@ bfa_ioc_ct_ownership_reset(struct bfa_ioc_s *ioc) * will lock it instead of clearing it. */ readl(ioc->ioc_regs.ioc_sem_reg); - bfa_ioc_hw_sem_release(ioc); + writel(1, ioc->ioc_regs.ioc_sem_reg); +} + +/* + * 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; +} /* * Check the firmware state to know if pll_init has been completed already |