/*      $NetBSD: ahc_cardbus.c,v 1.38 2019/11/10 21:16:34 chs Exp $     */

/*-
* Copyright (c) 2000, 2005 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

/*
* CardBus front-end for the Adaptec AIC-7xxx family of SCSI controllers.
*
* TODO:
*      - power management
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ahc_cardbus.c,v 1.38 2019/11/10 21:16:34 chs Exp $");

#include "opt_ahc_cardbus.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/queue.h>
#include <sys/device.h>

#include <sys/bus.h>
#include <sys/intr.h>

#include <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>

#include <dev/pci/pcireg.h>

#include <dev/cardbus/cardbusvar.h>
#include <dev/pci/pcidevs.h>

#include <dev/ic/aic7xxx_osm.h>
#include <dev/ic/aic7xxx_inline.h>


#ifndef AHC_CARDBUS_DEFAULT_SCSI_ID
#define AHC_CARDBUS_DEFAULT_SCSI_ID     0x7
#endif

#define AHC_CARDBUS_IOBA        0x10
#define AHC_CARDBUS_MMBA        0x14

struct ahc_cardbus_softc {
       struct ahc_softc sc_ahc;        /* real AHC */

       /* CardBus-specific goo. */
       cardbus_devfunc_t sc_ct;        /* our CardBus devfuncs */
       pcitag_t sc_tag;

       int     sc_bar;
       pcireg_t        sc_csr;
       bus_size_t sc_size;
};

int     ahc_cardbus_match(device_t, cfdata_t, void *);
void    ahc_cardbus_attach(device_t, device_t, void *);
int     ahc_cardbus_detach(device_t, int);

CFATTACH_DECL_NEW(ahc_cardbus, sizeof(struct ahc_cardbus_softc),
   ahc_cardbus_match, ahc_cardbus_attach, ahc_cardbus_detach, NULL);

int
ahc_cardbus_match(device_t parent, cfdata_t match, void *aux)
{
       struct cardbus_attach_args *ca = aux;

       if (PCI_VENDOR(ca->ca_id) == PCI_VENDOR_ADP &&
           PCI_PRODUCT(ca->ca_id) == PCI_PRODUCT_ADP_APA1480)
               return (1);

       return (0);
}

void
ahc_cardbus_attach(device_t parent, device_t self, void *aux)
{
       struct cardbus_attach_args *ca = aux;
       struct ahc_cardbus_softc *csc = device_private(self);
       struct ahc_softc *ahc = &csc->sc_ahc;
       cardbus_devfunc_t ct = ca->ca_ct;
       bus_space_tag_t bst;
       bus_space_handle_t bsh;
       pcireg_t reg;
       u_int sxfrctl1 = 0;
       u_char sblkctl;


       ahc->sc_dev = self;
       csc->sc_ct = ct;
       csc->sc_tag = ca->ca_tag;

       printf(": Adaptec ADP-1480 SCSI\n");

       /*
        * Map the device.
        */
       csc->sc_csr = PCI_COMMAND_MASTER_ENABLE;
       if (Cardbus_mapreg_map(csc->sc_ct, AHC_CARDBUS_MMBA,
           PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0,
           &bst, &bsh, NULL, &csc->sc_size) == 0) {
               csc->sc_bar = AHC_CARDBUS_MMBA;
               csc->sc_csr |= PCI_COMMAND_MEM_ENABLE;
       } else if (Cardbus_mapreg_map(csc->sc_ct, AHC_CARDBUS_IOBA,
           PCI_MAPREG_TYPE_IO, 0, &bst, &bsh, NULL, &csc->sc_size) == 0) {
               csc->sc_bar = AHC_CARDBUS_IOBA;
               csc->sc_csr |= PCI_COMMAND_IO_ENABLE;
       } else {
               csc->sc_bar = 0;
               aprint_error("%s: unable to map device registers\n",
                   ahc_name(ahc));
               return;
       }

       /* Enable the appropriate bits in the PCI CSR. */
       reg = Cardbus_conf_read(ct, ca->ca_tag, PCI_COMMAND_STATUS_REG);
       reg &= ~(PCI_COMMAND_IO_ENABLE|PCI_COMMAND_MEM_ENABLE);
       reg |= csc->sc_csr;
       Cardbus_conf_write(ct, ca->ca_tag, PCI_COMMAND_STATUS_REG, reg);

       /*
        * Make sure the latency timer is set to some reasonable
        * value.
        */
       reg = Cardbus_conf_read(ct, ca->ca_tag, PCI_BHLC_REG);
       if (PCI_LATTIMER(reg) < 0x20) {
               reg &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT);
               reg |= (0x20 << PCI_LATTIMER_SHIFT);
               Cardbus_conf_write(ct, ca->ca_tag, PCI_BHLC_REG, reg);
       }

       ahc_set_name(ahc, device_xname(ahc->sc_dev));

       ahc->parent_dmat = ca->ca_dmat;
       ahc->tag = bst;
       ahc->bsh = bsh;

       /*
        * ADP-1480 is always an AIC-7860.
        */
       ahc->chip = AHC_AIC7860 | AHC_PCI;
       ahc->features = AHC_AIC7860_FE|AHC_REMOVABLE;
       ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
       if (PCI_REVISION(ca->ca_class) >= 1)
               ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;

       if (ahc_softc_init(ahc) != 0)
               return;

       /*
        * On all CardBus adapters, we allow SCB paging.
        */
       ahc->flags = AHC_PAGESCBS;

       ahc->channel = 'A';

       ahc_intr_enable(ahc, FALSE);

       ahc_reset(ahc);

       /*
        * Establish the interrupt.
        */
       ahc->ih = Cardbus_intr_establish(ct, IPL_BIO, ahc_intr, ahc);
       if (ahc->ih == NULL) {
               aprint_error("%s: unable to establish interrupt\n",
                   ahc_name(ahc));
               return;
       }

       ahc->seep_config = malloc(sizeof(*ahc->seep_config),
                                 M_DEVBUF, M_WAITOK);
       ahc_check_extport(ahc, &sxfrctl1);
       /*
        * Take the LED out of diagnostic mode.
        */
       sblkctl = ahc_inb(ahc, SBLKCTL);
       ahc_outb(ahc, SBLKCTL, (sblkctl & ~(DIAGLEDEN|DIAGLEDON)));

       /*
        * I don't know where this is set in the SEEPROM or by the
        * BIOS, so we default to 100%.
        */
       ahc_outb(ahc, DSPCISTATUS, DFTHRSH_100);

       if (ahc->flags & AHC_USEDEFAULTS) {
               int our_id;
               /*
                * Assume only one connector and always turn
                * on termination.
                */
               our_id = AHC_CARDBUS_DEFAULT_SCSI_ID;
               sxfrctl1 = STPWEN;
               ahc_outb(ahc, SCSICONF, our_id | ENSPCHK | RESET_SCSI);
               ahc->our_id = our_id;
       }

       /*
        * Record our termination setting for the
        * generic initialization routine.
        */
       if ((sxfrctl1 & STPWEN) != 0)
               ahc->flags |= AHC_TERM_ENB_A;

       if (ahc_init(ahc)) {
               ahc_free(ahc);
               return;
       }

       ahc_attach(ahc);
}

int
ahc_cardbus_detach(device_t self, int flags)
{
       struct ahc_cardbus_softc *csc = device_private(self);
       struct ahc_softc *ahc = &csc->sc_ahc;

       int rv;

       rv = ahc_detach(ahc, flags);
       if (rv)
               return rv;

       if (ahc->ih) {
               Cardbus_intr_disestablish(csc->sc_ct, ahc->ih);
               ahc->ih = 0;
       }

       if (csc->sc_bar != 0) {
               Cardbus_mapreg_unmap(csc->sc_ct, csc->sc_bar,
                       ahc->tag, ahc->bsh, csc->sc_size);
               csc->sc_bar = 0;
       }

       return (0);
}

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