Merge branch 'master' into for-next

1 files changed, 423 insertions, 0 deletions

diff --git a/drivers/scsi/bfa/bfa_ioc_ct.c b/drivers/scsi/bfa/bfa_ioc_ct.c
new file mode 100644
index 000000000000..20b58ad5f95c
--- /dev/null
+++ b/drivers/scsi/bfa/bfa_ioc_ct.c
@@ -0,0 +1,423 @@
+/*
+ * Copyright (c) 2005-2009 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 <bfa.h>
+#include <bfa_ioc.h>
+#include <bfa_fwimg_priv.h>
+#include <cna/bfa_cna_trcmod.h>
+#include <cs/bfa_debug.h>
+#include <bfi/bfi_ioc.h>
+#include <bfi/bfi_ctreg.h>
+#include <log/bfa_log_hal.h>
+#include <defs/bfa_defs_pci.h>
+
+BFA_TRC_FILE(CNA, IOC_CT);
+
+/*
+ * forward declarations
+ */
+static bfa_status_t bfa_ioc_ct_pll_init(struct bfa_ioc_s *ioc);
+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 u32* bfa_ioc_ct_fwimg_get_chunk(struct bfa_ioc_s *ioc,
+                                        u32 off);
+static u32 bfa_ioc_ct_fwimg_get_size(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_ownership_reset(struct bfa_ioc_s *ioc);
+
+struct bfa_ioc_hwif_s hwif_ct = {
+        bfa_ioc_ct_pll_init,
+        bfa_ioc_ct_firmware_lock,
+        bfa_ioc_ct_firmware_unlock,
+        bfa_ioc_ct_fwimg_get_chunk,
+        bfa_ioc_ct_fwimg_get_size,
+        bfa_ioc_ct_reg_init,
+        bfa_ioc_ct_map_port,
+        bfa_ioc_ct_isr_mode_set,
+        bfa_ioc_ct_notify_hbfail,
+        bfa_ioc_ct_ownership_reset,
+};
+
+/**
+ * Called from bfa_ioc_attach() to map asic specific calls.
+ */
+void
+bfa_ioc_set_ct_hwif(struct bfa_ioc_s *ioc)
+{
+        ioc->ioc_hwif = &hwif_ct;
+}
+
+static u32*
+bfa_ioc_ct_fwimg_get_chunk(struct bfa_ioc_s *ioc, u32 off)
+{
+        return bfi_image_ct_get_chunk(off);
+}
+
+static u32
+bfa_ioc_ct_fwimg_get_size(struct bfa_ioc_s *ioc)
+{
+        return bfi_image_ct_size;
+}
+
+/**
+ * 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;
+
+        /**
+         * Firmware match check is relevant only for CNA.
+         */
+        if (!ioc->cna)
+                return BFA_TRUE;
+
+        /**
+         * If bios boot (flash based) -- do not increment usage count
+         */
+        if (bfa_ioc_ct_fwimg_get_size(ioc) < BFA_IOC_FWIMG_MINSZ)
+                return BFA_TRUE;
+
+        bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
+        usecnt = bfa_reg_read(ioc->ioc_regs.ioc_usage_reg);
+
+        /**
+         * If usage count is 0, always return TRUE.
+         */
+        if (usecnt == 0) {
+                bfa_reg_write(ioc->ioc_regs.ioc_usage_reg, 1);
+                bfa_ioc_sem_release(ioc->ioc_regs.ioc_usage_sem_reg);
+                bfa_trc(ioc, usecnt);
+                return BFA_TRUE;
+        }
+
+        ioc_fwstate = bfa_reg_read(ioc->ioc_regs.ioc_fwstate);
+        bfa_trc(ioc, ioc_fwstate);
+
+        /**
+         * Use count cannot be non-zero and chip in uninitialized state.
+         */
+        bfa_assert(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);
+                bfa_trc(ioc, usecnt);
+                return BFA_FALSE;
+        }
+
+        /**
+         * Same firmware version. Increment the reference count.
+         */
+        usecnt++;
+        bfa_reg_write(ioc->ioc_regs.ioc_usage_reg, usecnt);
+        bfa_ioc_sem_release(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;
+
+        /**
+         * Firmware lock is relevant only for CNA.
+         * If bios boot (flash based) -- do not decrement usage count
+         */
+        if (!ioc->cna || bfa_ioc_ct_fwimg_get_size(ioc) < BFA_IOC_FWIMG_MINSZ)
+                return;
+
+        /**
+         * decrement usage count
+         */
+        bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
+        usecnt = bfa_reg_read(ioc->ioc_regs.ioc_usage_reg);
+        bfa_assert(usecnt > 0);
+
+        usecnt--;
+        bfa_reg_write(ioc->ioc_regs.ioc_usage_reg, usecnt);
+        bfa_trc(ioc, usecnt);
+
+        bfa_ioc_sem_release(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)
+{
+        if (ioc->cna) {
+                bfa_reg_write(ioc->ioc_regs.ll_halt, __FW_INIT_HALT_P);
+                /* Wait for halt to take effect */
+                bfa_reg_read(ioc->ioc_regs.ll_halt);
+        } else {
+                bfa_reg_write(ioc->ioc_regs.err_set, __PSS_ERR_STATUS_SET);
+                bfa_reg_read(ioc->ioc_regs.err_set);
+        }
+}
+
+/**
+ * Host to LPU mailbox message addresses
+ */
+static struct { u32 hfn_mbox, lpu_mbox, hfn_pgn; } iocreg_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; } iocreg_mbcmd_p0[] = {
+        { HOSTFN0_LPU0_MBOX0_CMD_STAT, LPU0_HOSTFN0_MBOX0_CMD_STAT },
+        { HOSTFN1_LPU0_MBOX0_CMD_STAT, LPU0_HOSTFN1_MBOX0_CMD_STAT },
+        { HOSTFN2_LPU0_MBOX0_CMD_STAT, LPU0_HOSTFN2_MBOX0_CMD_STAT },
+        { HOSTFN3_LPU0_MBOX0_CMD_STAT, LPU0_HOSTFN3_MBOX0_CMD_STAT }
+};
+
+/**
+ * Host <-> LPU mailbox command/status registers - port 1
+ */
+static struct { u32 hfn, lpu; } iocreg_mbcmd_p1[] = {
+        { HOSTFN0_LPU1_MBOX0_CMD_STAT, LPU1_HOSTFN0_MBOX0_CMD_STAT },
+        { HOSTFN1_LPU1_MBOX0_CMD_STAT, LPU1_HOSTFN1_MBOX0_CMD_STAT },
+        { HOSTFN2_LPU1_MBOX0_CMD_STAT, LPU1_HOSTFN2_MBOX0_CMD_STAT },
+        { HOSTFN3_LPU1_MBOX0_CMD_STAT, LPU1_HOSTFN3_MBOX0_CMD_STAT }
+};
+
+static void
+bfa_ioc_ct_reg_init(struct bfa_ioc_s *ioc)
+{
+        bfa_os_addr_t   rb;
+        int             pcifn = bfa_ioc_pcifn(ioc);
+
+        rb = bfa_ioc_bar0(ioc);
+
+        ioc->ioc_regs.hfn_mbox = rb + iocreg_fnreg[pcifn].hfn_mbox;
+        ioc->ioc_regs.lpu_mbox = rb + iocreg_fnreg[pcifn].lpu_mbox;
+        ioc->ioc_regs.host_page_num_fn = rb + iocreg_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.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;
+        } else {
+                ioc->ioc_regs.heartbeat = (rb + BFA_IOC1_HBEAT_REG);
+                ioc->ioc_regs.ioc_fwstate = (rb + BFA_IOC1_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;
+        }
+
+        /*
+         * 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_425_CTL_REG);
+        ioc->ioc_regs.app_pll_slow_ctl_reg = (rb + APP_PLL_312_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);
+
+        /**
+         * 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)
+{
+        bfa_os_addr_t   rb = ioc->pcidev.pci_bar_kva;
+        u32     r32;
+
+        /**
+         * For catapult, base port id on personality register and IOC type
+         */
+        r32 = bfa_reg_read(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);
+}
+
+/**
+ * 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)
+{
+        bfa_os_addr_t   rb = ioc->pcidev.pci_bar_kva;
+        u32     r32, mode;
+
+        r32 = bfa_reg_read(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)
+                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);
+
+        bfa_reg_write(rb + FNC_PERS_REG, r32);
+}
+
+static bfa_status_t
+bfa_ioc_ct_pll_init(struct bfa_ioc_s *ioc)
+{
+        bfa_os_addr_t   rb = ioc->pcidev.pci_bar_kva;
+        u32     pll_sclk, pll_fclk, r32;
+
+        /*
+         *  Hold semaphore so that nobody can access the chip during init.
+         */
+        bfa_ioc_sem_get(ioc->ioc_regs.ioc_init_sem_reg);
+
+        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);
+
+        /**
+         *      For catapult, choose operational mode FC/FCoE
+         */
+        if (ioc->fcmode) {
+                bfa_reg_write((rb + OP_MODE), 0);
+                bfa_reg_write((rb + ETH_MAC_SER_REG),
+                                __APP_EMS_CMLCKSEL |
+                                __APP_EMS_REFCKBUFEN2 |
+                                __APP_EMS_CHANNEL_SEL);
+        } else {
+                ioc->pllinit = BFA_TRUE;
+                bfa_reg_write((rb + OP_MODE), __GLOBAL_FCOE_MODE);
+                bfa_reg_write((rb + ETH_MAC_SER_REG),
+                                 __APP_EMS_REFCKBUFEN1);
+        }
+
+        bfa_reg_write((rb + BFA_IOC0_STATE_REG), BFI_IOC_UNINIT);
+        bfa_reg_write((rb + BFA_IOC1_STATE_REG), BFI_IOC_UNINIT);
+
+        bfa_reg_write((rb + HOSTFN0_INT_MSK), 0xffffffffU);
+        bfa_reg_write((rb + HOSTFN1_INT_MSK), 0xffffffffU);
+        bfa_reg_write((rb + HOSTFN0_INT_STATUS), 0xffffffffU);
+        bfa_reg_write((rb + HOSTFN1_INT_STATUS), 0xffffffffU);
+        bfa_reg_write((rb + HOSTFN0_INT_MSK), 0xffffffffU);
+        bfa_reg_write((rb + HOSTFN1_INT_MSK), 0xffffffffU);
+
+        bfa_reg_write(ioc->ioc_regs.app_pll_slow_ctl_reg, pll_sclk |
+                __APP_PLL_312_LOGIC_SOFT_RESET);
+        bfa_reg_write(ioc->ioc_regs.app_pll_fast_ctl_reg, pll_fclk |
+                __APP_PLL_425_LOGIC_SOFT_RESET);
+        bfa_reg_write(ioc->ioc_regs.app_pll_slow_ctl_reg, pll_sclk |
+                __APP_PLL_312_LOGIC_SOFT_RESET | __APP_PLL_312_ENABLE);
+        bfa_reg_write(ioc->ioc_regs.app_pll_fast_ctl_reg, pll_fclk |
+                __APP_PLL_425_LOGIC_SOFT_RESET | __APP_PLL_425_ENABLE);
+
+        /**
+         * Wait for PLLs to lock.
+         */
+        bfa_reg_read(rb + HOSTFN0_INT_MSK);
+        bfa_os_udelay(2000);
+        bfa_reg_write((rb + HOSTFN0_INT_STATUS), 0xffffffffU);
+        bfa_reg_write((rb + HOSTFN1_INT_STATUS), 0xffffffffU);
+
+        bfa_reg_write(ioc->ioc_regs.app_pll_slow_ctl_reg, pll_sclk |
+                __APP_PLL_312_ENABLE);
+        bfa_reg_write(ioc->ioc_regs.app_pll_fast_ctl_reg, pll_fclk |
+                __APP_PLL_425_ENABLE);
+
+        bfa_reg_write((rb + MBIST_CTL_REG), __EDRAM_BISTR_START);
+        bfa_os_udelay(1000);
+        r32 = bfa_reg_read((rb + MBIST_STAT_REG));
+        bfa_trc(ioc, r32);
+        /*
+         *  release semaphore.
+         */
+        bfa_ioc_sem_release(ioc->ioc_regs.ioc_init_sem_reg);
+
+        return BFA_STATUS_OK;
+}
+
+/**
+ * Cleanup hw semaphore and usecnt registers
+ */
+static void
+bfa_ioc_ct_ownership_reset(struct bfa_ioc_s *ioc)
+{
+
+        if (ioc->cna) {
+                bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
+                bfa_reg_write(ioc->ioc_regs.ioc_usage_reg, 0);
+                bfa_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.
+         */
+        bfa_reg_read(ioc->ioc_regs.ioc_sem_reg);
+        bfa_ioc_hw_sem_release(ioc);
+}