Merge remote-tracking branch 'origin/master'

[unleashed/lotheac.git] / usr / src / uts / common / io / 1394 / adapters / hci1394_attach.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*
 * hci1394_attach.c
 *    HBA attach() routine with associated funtions.
 */

#include <sys/types.h>
#include <sys/kmem.h>
#include <sys/conf.h>
#include <sys/ddi.h>
#include <sys/modctl.h>
#include <sys/stat.h>
#include <sys/sunddi.h>
#include <sys/cmn_err.h>
#include <sys/pci.h>

#include <sys/1394/h1394.h>
#include <sys/1394/adapters/hci1394.h>
#include <sys/1394/adapters/hci1394_extern.h>


/*
 * Attach State Information. These states are used to track the status of the
 * attach.  They are bit offsets.
 */
#define STATE_ZALLOC            0
#define STATE_ISR_INIT          1
#define STATE_MINOR_NODE        2
#define STATE_HW_INIT           3
#define STATE_PHASE2            4
#define STATE_POWER_INIT        5
#define STATE_H1394_ATTACH      6
#define STATE_ISR_HANDLER       7
#define STATE_STARTUP           8

static void hci1394_statebit_set(uint64_t *state, uint_t statebit);
static boolean_t hci1394_statebit_tst(uint64_t state, uint_t statebit);

static void hci1394_cleanup(hci1394_state_t *soft_state, uint64_t attach_state);

static int hci1394_hardware_init(hci1394_state_t *soft_state);
static int hci1394_hardware_resume(hci1394_state_t *soft_state);

static int hci1394_pci_init(hci1394_state_t *soft_state);
static void hci1394_pci_resume(hci1394_state_t *soft_state);

static void hci1394_soft_state_phase1_init(hci1394_state_t *soft_state,
    dev_info_t *dip, int instance);
static void hci1394_soft_state_phase2_init(hci1394_state_t *soft_state);

static int hci1394_resmap_get(hci1394_state_t *soft_state);
static void hci1394_resmap_free(hci1394_state_t *soft_state);



int
hci1394_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
{
        hci1394_state_t *soft_state;
        uint64_t attach_state = 0;
        int instance;
        int status;

        switch (cmd) {
        case DDI_ATTACH:
                instance = ddi_get_instance(dip);
                status = ddi_soft_state_zalloc(hci1394_statep, instance);
                if (status != DDI_SUCCESS) {
                        return (DDI_FAILURE);
                }
                soft_state = ddi_get_soft_state(hci1394_statep, instance);
                if (soft_state == NULL) {
                        ddi_soft_state_free(hci1394_statep, instance);
                        return (DDI_FAILURE);
                }
                hci1394_statebit_set(&attach_state, STATE_ZALLOC);

                hci1394_soft_state_phase1_init(soft_state, dip, instance);

                /* get iblock cookie, other interrupt init stuff */
                status = hci1394_isr_init(soft_state);
                if (status != DDI_SUCCESS) {
                        hci1394_cleanup(soft_state, attach_state);
                        return (DDI_FAILURE);
                }
                hci1394_statebit_set(&attach_state, STATE_ISR_INIT);

                status = ddi_create_minor_node(dip, "devctl", S_IFCHR,
                    instance, DDI_NT_NEXUS, 0);
                if (status != DDI_SUCCESS) {
                        hci1394_cleanup(soft_state, attach_state);
                        return (DDI_FAILURE);
                }
                hci1394_statebit_set(&attach_state, STATE_MINOR_NODE);

                status = hci1394_hardware_init(soft_state);
                if (status != DDI_SUCCESS) {
                        hci1394_cleanup(soft_state, attach_state);
                        return (DDI_FAILURE);
                }
                hci1394_statebit_set(&attach_state, STATE_HW_INIT);

                hci1394_soft_state_phase2_init(soft_state);
                hci1394_statebit_set(&attach_state, STATE_PHASE2);

                /* build up the reserved addresses map */
                status = hci1394_resmap_get(soft_state);
                if (status != DDI_SUCCESS) {
                        hci1394_cleanup(soft_state, attach_state);
                        return (DDI_FAILURE);
                }

                /* "attach" to the Services Layer */
                status = h1394_attach(&soft_state->halinfo, DDI_ATTACH,
                    &soft_state->drvinfo.di_sl_private);
                if (status != DDI_SUCCESS) {
                        hci1394_resmap_free(soft_state);
                        hci1394_cleanup(soft_state, attach_state);
                        return (DDI_FAILURE);
                }
                /* free the reserved addresses map */
                hci1394_resmap_free(soft_state);

                hci1394_statebit_set(&attach_state, STATE_H1394_ATTACH);
                status = hci1394_isr_handler_init(soft_state);
                if (status != DDI_SUCCESS) {
                        hci1394_cleanup(soft_state, attach_state);
                        return (DDI_FAILURE);
                }
                hci1394_statebit_set(&attach_state, STATE_ISR_HANDLER);

                /* Report that driver was loaded */
                ddi_report_dev(dip);

                /*
                 * Turn on link, Reset Bus, enable interrupts.  Should be the
                 * last routine called in attach. The statebit for starup must
                 * be set before startup is called since startup enables
                 * interrupts.
                 */
                hci1394_statebit_set(&attach_state, STATE_STARTUP);
                status = hci1394_ohci_startup(soft_state->ohci);
                if (status != DDI_SUCCESS) {
                        hci1394_cleanup(soft_state, attach_state);
                        return (DDI_FAILURE);
                }

                return (DDI_SUCCESS);

        case DDI_RESUME:
                instance = ddi_get_instance(dip);
                soft_state = ddi_get_soft_state(hci1394_statep, instance);
                if (soft_state == NULL) {
                        return (DDI_FAILURE);
                }

                status = hci1394_hardware_resume(soft_state);
                if (status != DDI_SUCCESS) {
                        return (DDI_FAILURE);
                }

                /*
                 * set our state back to initial.  The next bus reset were
                 * about to generate will set us in motion.
                 */
                soft_state->drvinfo.di_drvstate.ds_state = HCI1394_INITIAL;

                /* turn on the link, enable interrupts, reset the bus */
                status = hci1394_ohci_startup(soft_state->ohci);
                if (status != DDI_SUCCESS) {
                        return (DDI_FAILURE);
                }

                /* tell the Services Layer that we are resuming */
                status = h1394_attach(&soft_state->halinfo, DDI_RESUME,
                    &soft_state->drvinfo.di_sl_private);
                if (status != DDI_SUCCESS) {
                        return (DDI_FAILURE);
                }

                return (DDI_SUCCESS);

        default:
                break;
        }

        return (DDI_FAILURE);
}


/*
 * hci1394_soft_state_phase1_init()
 *    First part soft_state initialization.  This should be called before any
 *    other initialization routines are called.  Anything that requires cleanup
 *    on detach or after an attach failure should be setup in phase2 init (i.e.
 *    mutex's, cv's, etc.)
 */
static void
hci1394_soft_state_phase1_init(hci1394_state_t *soft_state, dev_info_t *dip,
    int instance)
{
        ASSERT(soft_state != NULL);

        soft_state->drvinfo.di_dip = dip;
        soft_state->drvinfo.di_instance = instance;

        /* current bus generation */
        soft_state->drvinfo.di_gencnt = 0;

        soft_state->drvinfo.di_sl_private = NULL;

        /* initialize statistics */
        soft_state->drvinfo.di_stats.st_bus_reset_count = 0;
        soft_state->drvinfo.di_stats.st_selfid_count = 0;
        soft_state->drvinfo.di_stats.st_phy_isr = 0;
        soft_state->drvinfo.di_stats.st_phy_loop_err = 0;
        soft_state->drvinfo.di_stats.st_phy_pwrfail_err = 0;
        soft_state->drvinfo.di_stats.st_phy_timeout_err = 0;
        soft_state->drvinfo.di_stats.st_phy_portevt_err = 0;

        soft_state->swap_data = B_FALSE;
        soft_state->sl_selfid_buf = NULL;

        /* halinfo is what is passed up to the Services Layer */
        soft_state->halinfo.hal_private = soft_state;
        soft_state->halinfo.dip = soft_state->drvinfo.di_dip;
        soft_state->halinfo.hal_events = hci1394_evts;
        soft_state->halinfo.max_generation = OHCI_BUSGEN_MAX;
        soft_state->halinfo.addr_map_num_entries = HCI1394_ADDR_MAP_SIZE;
        soft_state->halinfo.addr_map = hci1394_addr_map;
        hci1394_buf_attr_get(&soft_state->halinfo.dma_attr);
}


/*
 * hci1394_soft_state_phase2_init()
 *    Second part of soft_state initialization.  This should be called after a
 *    successful hardware_init() and before the call to h1394_attach().
 */
static void
hci1394_soft_state_phase2_init(hci1394_state_t *soft_state)
{
        ASSERT(soft_state != NULL);

        /*
         * Setup our initial driver state.  This requires the HW iblock
         * cookie so this must be setup in phase2_init()
         */
        soft_state->drvinfo.di_drvstate.ds_state = HCI1394_INITIAL;
        mutex_init(&soft_state->drvinfo.di_drvstate.ds_mutex, NULL,
            MUTEX_DRIVER, soft_state->drvinfo.di_iblock_cookie);

        /*
         * halinfo.acc_attr tells the services layer what our buffer access
         * attributes are.  drvinfo.di_buf_attr it initialized in pci_init so
         * this must be setup in phase2_init()
         */
        soft_state->halinfo.acc_attr = soft_state->drvinfo.di_buf_attr;

        /*
         * halinfo.hw_interrupt tells the services layer what our
         * iblock_cookie is. drvinfo.di_iblock_cookie is setup in isr_init so
         * this must be setup in phase2_init()
         */
        soft_state->halinfo.hw_interrupt = soft_state->drvinfo.di_iblock_cookie;

        /*
         * Read in our node capabilities.  Since we are calling into csr
         * we must have first called hardware_init().  Therefore, this must
         * be in phase2_init().
         */
        hci1394_csr_node_capabilities(soft_state->csr,
            &soft_state->halinfo.node_capabilities);

        /*
         * Read in our bus capabilities.  Since we are calling into ohci
         * we must have first called hardware_init().  Therefore, this must
         * be in phase2_init().
         */
        hci1394_ohci_bus_capabilities(soft_state->ohci,
            &soft_state->halinfo.bus_capabilities);

        /*
         * Setup our async command overhead. When a target driver or the ARREQ
         * engine allocates a command, the services layer will tack on space
         * for itself and the HAL so we do not have to manage memory for every
         * command.  hal_overhead is how much memory the hal requires to track
         * an async command. Since we are calling into async we must have first
         * called hardware_init().  Therefore, this must be in phase2_init().
         */
        soft_state->halinfo.hal_overhead = hci1394_async_cmd_overhead();
}


/*
 * hci1394_hardware_init()
 *    Initialize the adapter hardware.  This should be called during
 *    the initial attach().
 */
static int
hci1394_hardware_init(hci1394_state_t *soft_state)
{
        int status;


        ASSERT(soft_state != NULL);

        /* Initialize PCI config registers */
        status = hci1394_pci_init(soft_state);
        if (status != DDI_SUCCESS) {
                return (DDI_FAILURE);
        }

        /* Initialize the OpenHCI Hardware */
        status = hci1394_ohci_init(soft_state, &soft_state->drvinfo,
            &soft_state->ohci);
        if (status != DDI_SUCCESS) {
                hci1394_pci_fini(soft_state);
                return (DDI_FAILURE);
        }

        /* Initialize SW based CSR registers */
        hci1394_csr_init(&soft_state->drvinfo, soft_state->ohci,
            &soft_state->csr);

        /* Initialize the Asynchronous Q's */
        status = hci1394_async_init(&soft_state->drvinfo, soft_state->ohci,
            soft_state->csr, &soft_state->async);
        if (status != DDI_SUCCESS) {
                hci1394_csr_fini(&soft_state->csr);
                hci1394_ohci_fini(&soft_state->ohci);
                hci1394_pci_fini(soft_state);
                return (DDI_FAILURE);
        }

        /* Initialize the Isochronous logic */
        hci1394_isoch_init(&soft_state->drvinfo, soft_state->ohci,
            &soft_state->isoch);

        /* Initialize any Vendor Specific Registers */
        status = hci1394_vendor_init(&soft_state->drvinfo, soft_state->ohci,
            &soft_state->vendor_info, &soft_state->vendor);
        if (status != DDI_SUCCESS) {
                hci1394_isoch_fini(&soft_state->isoch);
                hci1394_async_fini(&soft_state->async);
                hci1394_csr_fini(&soft_state->csr);
                hci1394_ohci_fini(&soft_state->ohci);
                hci1394_pci_fini(soft_state);
                return (DDI_FAILURE);
        }

        return (DDI_SUCCESS);
}


/*
 * hci1394_hardware_resume()
 *    Resume the adapter HW.  This routine will be called during resume after
 *    a successful system suspend.  All memory should be in the state it was
 *    before the suspend.  All we have to do is re-setup the HW.
 */
static int
hci1394_hardware_resume(hci1394_state_t *soft_state)
{
        int status;


        ASSERT(soft_state != NULL);

        /* re-enable global byte swap (if we using it) */
        hci1394_pci_resume(soft_state);

        /* Re-init the OpenHCI HW */
        status = hci1394_ohci_resume(soft_state->ohci);
        if (status != DDI_SUCCESS) {
                return (DDI_FAILURE);
        }

        /* re-setup our SW based CSR registers */
        hci1394_csr_resume(soft_state->csr);

        /* Re-setup the Async Q's */
        status = hci1394_async_resume(soft_state->async);
        if (status != DDI_SUCCESS) {
                return (DDI_FAILURE);
        }

        /* Re-setup any Vendor Specific Registers */
        status = hci1394_vendor_resume(soft_state->vendor);
        if (status != DDI_SUCCESS) {
                return (DDI_FAILURE);
        }

        return (DDI_SUCCESS);
}


/*
 * hci1394_pci_init()
 *    Map in PCI config space and initialize PCI config space registers.
 */
static int
hci1394_pci_init(hci1394_state_t *soft_state)
{
        int status;
#ifndef _LITTLE_ENDIAN
        uint32_t global_swap;
#endif


        ASSERT(soft_state != NULL);

        /* Setup PCI configuration space */
        status = pci_config_setup(soft_state->drvinfo.di_dip,
            &soft_state->pci_config);
        if (status != DDI_SUCCESS) {
                return (DDI_FAILURE);
        }


#ifdef _LITTLE_ENDIAN
        /* Start of little endian specific code */
        soft_state->drvinfo.di_reg_attr.devacc_attr_version =
            DDI_DEVICE_ATTR_V0;
        soft_state->drvinfo.di_reg_attr.devacc_attr_endian_flags =
            DDI_STRUCTURE_LE_ACC;
        soft_state->drvinfo.di_reg_attr.devacc_attr_dataorder =
            DDI_STRICTORDER_ACC;
        soft_state->drvinfo.di_buf_attr.devacc_attr_version =
            DDI_DEVICE_ATTR_V0;
        soft_state->drvinfo.di_buf_attr.devacc_attr_endian_flags =
            DDI_STRUCTURE_LE_ACC;
        soft_state->drvinfo.di_buf_attr.devacc_attr_dataorder =
            DDI_STRICTORDER_ACC;
        soft_state->swap_data = B_TRUE;
        /* End of little endian specific code */
#else
        /* Start of big endian specific code */
        /* If PCI_Global_Swap bit is not set, try to set it */
        global_swap = pci_config_get32(soft_state->pci_config,
            OHCI_PCI_HCI_CONTROL_REG);

        /* Lets see if the global byte swap feature is supported */
        if ((global_swap & OHCI_PCI_GLOBAL_SWAP) == 0) {
                global_swap = global_swap | OHCI_PCI_GLOBAL_SWAP;
                pci_config_put32(soft_state->pci_config,
                    OHCI_PCI_HCI_CONTROL_REG, global_swap);
        }

        global_swap = pci_config_get32(soft_state->pci_config,
            OHCI_PCI_HCI_CONTROL_REG);

        /* If PCI_Global_Swap bit is not set, it is unsupported */
        if ((global_swap & OHCI_PCI_GLOBAL_SWAP) == 0) {
                soft_state->drvinfo.di_reg_attr.devacc_attr_version =
                    DDI_DEVICE_ATTR_V0;
                soft_state->drvinfo.di_reg_attr.devacc_attr_endian_flags =
                    DDI_STRUCTURE_LE_ACC;
                soft_state->drvinfo.di_reg_attr.devacc_attr_dataorder =
                    DDI_STRICTORDER_ACC;
                soft_state->drvinfo.di_buf_attr.devacc_attr_version =
                    DDI_DEVICE_ATTR_V0;
                soft_state->drvinfo.di_buf_attr.devacc_attr_endian_flags =
                    DDI_STRUCTURE_LE_ACC;
                soft_state->drvinfo.di_buf_attr.devacc_attr_dataorder =
                    DDI_STRICTORDER_ACC;
                soft_state->swap_data = B_TRUE;
        /*
         * global byte swap is supported.  This should be the case
         * for almost all of the adapters.
         */
        } else {
                soft_state->drvinfo.di_reg_attr.devacc_attr_version =
                    DDI_DEVICE_ATTR_V0;
                soft_state->drvinfo.di_reg_attr.devacc_attr_endian_flags =
                    DDI_STRUCTURE_BE_ACC;
                soft_state->drvinfo.di_reg_attr.devacc_attr_dataorder =
                    DDI_STRICTORDER_ACC;
                soft_state->drvinfo.di_buf_attr.devacc_attr_version =
                    DDI_DEVICE_ATTR_V0;
                soft_state->drvinfo.di_buf_attr.devacc_attr_endian_flags =
                    DDI_STRUCTURE_BE_ACC;
                soft_state->drvinfo.di_buf_attr.devacc_attr_dataorder =
                    DDI_STRICTORDER_ACC;
                soft_state->swap_data = B_FALSE;
        }
        /* End of big endian specific code */
#endif

        /* read in vendor Information */
        soft_state->vendor_info.vendor_id =
            (uint_t)pci_config_get16(soft_state->pci_config, PCI_CONF_VENID);
        soft_state->vendor_info.device_id =
            (uint_t)pci_config_get16(soft_state->pci_config, PCI_CONF_DEVID);
        soft_state->vendor_info.revision_id =
            (uint_t)pci_config_get8(soft_state->pci_config, PCI_CONF_REVID);

        return (DDI_SUCCESS);
}


/*
 * hci1394_pci_resume()
 *    Re-Initialize PCI config space registers during a resume.
 */
/* ARGSUSED */
static void
hci1394_pci_resume(hci1394_state_t *soft_state)
{
#ifndef _LITTLE_ENDIAN
        uint32_t global_swap;
#endif


        ASSERT(soft_state != NULL);

#ifdef _LITTLE_ENDIAN
        /* Start of little endian specific code */
        /* nothing to do here yet.  Maybe later?? */
        /* End of little endian specific code */
#else
        /* Start of big endian specific code */
        /* If PCI_Global_Swap bit is not set, try to set it */
        global_swap = pci_config_get32(soft_state->pci_config,
            OHCI_PCI_HCI_CONTROL_REG);
        /* Try and set GlobalByteSwap */
        if ((global_swap & OHCI_PCI_GLOBAL_SWAP) == 0) {
                global_swap = global_swap | OHCI_PCI_GLOBAL_SWAP;
                pci_config_put32(soft_state->pci_config,
                    OHCI_PCI_HCI_CONTROL_REG, global_swap);
        }
        /* End of big endian specific code */
#endif
}


/*
 * hci1394_resmap_get()
 *    Look for adapter property "reserved-addresses".  This property is used to
 *    reserve 1394 address space so that it will not randomly be given to a
 *    target driver during a 1394 address space alloc.  Some protocols hard
 *    code addresses which make us do this.  The target driver must specifically
 *    ask for these addresses.  This routine should be called before the
 *    call to h1394_attach().
 */
static int
hci1394_resmap_get(hci1394_state_t *soft_state)
{
        h1394_addr_map_t *resv_map;
        int resv_num;
        int status;
        int reslen;
        uint32_t *resptr;
        int rescnt;
        int mapcnt;


        ASSERT(soft_state != NULL);

        /*
         * See if the "reserved-addresses" property is defined.  The format
         * should be:
         *
         * reserved-addresses=  0x0000ffff,0xf0000B00,0x200,
         *                      0x0000ffff,0xf0000D00,0x200,
         *                      0x0000ffff,0xf0000234,0x4;
         * You can have multiple reserved addresses.  Each reserved address
         * takes up 3 integers.
         *    MSWofAddr,LSWofAddr,ByteCount
         */
        status = ddi_prop_lookup_int_array(DDI_DEV_T_ANY,
            soft_state->drvinfo.di_dip, DDI_PROP_DONTPASS, "reserved-addresses",
            (int **)&resptr, (uint_t *)&reslen);
        if (status != DDI_PROP_SUCCESS) {
                /* the property is not defined,  0 reserved addresses */
                soft_state->halinfo.resv_map_num_entries = 0;
                soft_state->halinfo.resv_map = NULL;
                return (DDI_SUCCESS);
        } else if ((reslen < 3) || ((reslen % 3) != 0)) {
                /*
                 * the property is defined but the correct number of integers
                 * is not present.
                 */
                resv_num = 0;
                resv_map = NULL;
                cmn_err(CE_NOTE, "!%s(%d): Invalid reserved-addresses property."
                    " Property ignored", ddi_node_name(
                    soft_state->drvinfo.di_dip), ddi_get_instance(
                    soft_state->drvinfo.di_dip));
        } else {
                /* the property is defined. Alloc space to copy data into */
                resv_num = reslen / 3;
                resv_map = kmem_alloc((sizeof (h1394_addr_map_t) * (resv_num)),
                    KM_SLEEP);

                /* read in the address, length, and set the type to reserved */
                rescnt = 0;
                mapcnt = 0;
                while (rescnt < reslen) {
                        resv_map[mapcnt].address =
                            (uint64_t)resptr[rescnt] << 32;
                        rescnt++;
                        resv_map[mapcnt].address |= (uint64_t)resptr[rescnt];
                        rescnt++;
                        resv_map[mapcnt].length = (uint64_t)resptr[rescnt];
                        rescnt++;
                        resv_map[mapcnt].addr_type = H1394_ADDR_RESERVED;
                        mapcnt++;
                }
        }

        ddi_prop_free(resptr);

        /*
         * copy the number of reserved address ranges and a pointer to the map
         * into halinfo so we can tell the services layer about them in
         * h1394_attach()
         */
        soft_state->halinfo.resv_map_num_entries = resv_num;
        soft_state->halinfo.resv_map = resv_map;

        return (DDI_SUCCESS);
}


/*
 * hci1394_resmap_free()
 *    Free up the space alloced in hci1394_resmap_get().  This routine should
 *    be called after h1394_attach().  The HAL does not need this information
 *    and the services layer only uses it for a calculation during attach and
 *    should not refer to the pointer after it returns from h1394_attach().
 */
static void
hci1394_resmap_free(hci1394_state_t *soft_state)
{
        ASSERT(soft_state != NULL);

        /*
         * if we have one or more reserved map entries, free up the space that
         * was allocated to store them
         */
        if (soft_state->halinfo.resv_map_num_entries > 0) {
                ASSERT(soft_state->halinfo.resv_map != NULL);
                kmem_free(soft_state->halinfo.resv_map,
                    (sizeof (h1394_addr_map_t) *
                    soft_state->halinfo.resv_map_num_entries));
        }
}


/*
 * hci1394_statebit_set()
 *     Set bit "statebit" in "state"
 */
static void
hci1394_statebit_set(uint64_t *state, uint_t statebit)
{
        ASSERT(state != NULL);
        ASSERT(statebit < 64);
        *state |= (uint64_t)0x1 << statebit;
}


/*
 * hci1394_statebit_tst()
 *    Return status of bit "statebit".  Is it set or not?
 */
static boolean_t
hci1394_statebit_tst(uint64_t state, uint_t statebit)
{
        uint64_t bitset;
        int status;


        ASSERT(statebit < 64);
        bitset = state & ((uint64_t)0x1 << statebit);
        if (bitset == 0) {
                status = B_FALSE;
        } else {
                status = B_TRUE;
        }
        return (status);
}


/*
 * hci1394_cleanup()
 *    Cleanup after a failed attach
 */
static void
hci1394_cleanup(hci1394_state_t *soft_state, uint64_t attach_state)
{
        int status;


        ASSERT(soft_state != NULL);


        status = hci1394_statebit_tst(attach_state, STATE_STARTUP);
        if (status == B_TRUE) {
                /* Don't allow the HW to generate any more interrupts */
                hci1394_ohci_intr_master_disable(soft_state->ohci);

                /* don't accept anymore commands from services layer */
                (void) hci1394_state_set(&soft_state->drvinfo,
                    HCI1394_SHUTDOWN);

                /* Reset the chip */
                (void) hci1394_ohci_soft_reset(soft_state->ohci);

                /* Flush out async DMA Q's (cancels pendingQ timeouts too) */
                hci1394_async_flush(soft_state->async);
        }

        status = hci1394_statebit_tst(attach_state, STATE_ISR_HANDLER);
        if (status == B_TRUE) {
                hci1394_isr_handler_fini(soft_state);
        }

        status = hci1394_statebit_tst(attach_state, STATE_H1394_ATTACH);
        if (status == B_TRUE) {
                (void) h1394_detach(&soft_state->drvinfo.di_sl_private,
                    DDI_DETACH);
        }

        status = hci1394_statebit_tst(attach_state, STATE_HW_INIT);
        if (status == B_TRUE) {
                hci1394_detach_hardware(soft_state);
        }

        status = hci1394_statebit_tst(attach_state, STATE_MINOR_NODE);
        if (status == B_TRUE) {
                ddi_remove_minor_node(soft_state->drvinfo.di_dip, "devctl");
        }

        status = hci1394_statebit_tst(attach_state, STATE_ISR_INIT);
        if (status == B_TRUE) {
                hci1394_isr_fini(soft_state);
        }

        status = hci1394_statebit_tst(attach_state, STATE_PHASE2);
        if (status == B_TRUE) {
                hci1394_soft_state_fini(soft_state);
        }

        status = hci1394_statebit_tst(attach_state, STATE_ZALLOC);
        if (status == B_TRUE) {
                ddi_soft_state_free(hci1394_statep,
                    soft_state->drvinfo.di_instance);
        }
}