/*      $NetBSD: amd756.c,v 1.9 2011/07/01 17:37:26 dyoung Exp $        */

/*-
* Copyright (c) 1999, 2001 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.
*/

/*
* Copyright (c) 1999, by UCHIYAMA Yasushi
* All rights reserved.
*
* 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. The name of the developer may NOT be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/

/*
* Support for the Advanced Micro Devices AMD756 Peripheral Bus Controller.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: amd756.c,v 1.9 2011/07/01 17:37:26 dyoung Exp $");

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

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

#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>

#include <i386/pci/pci_intr_fixup.h>
#include <i386/pci/amd756reg.h>

struct amd756_handle {
       bus_space_tag_t ph_iot;
       bus_space_handle_t ph_regs_ioh;
       pci_chipset_tag_t ph_pc;
       pcitag_t ph_tag;
};

int     amd756_getclink(pciintr_icu_handle_t, int, int *);
int     amd756_get_intr(pciintr_icu_handle_t, int, int *);
int     amd756_set_intr(pciintr_icu_handle_t, int, int);
int     amd756_get_trigger(pciintr_icu_handle_t, int, int *);
int     amd756_set_trigger(pciintr_icu_handle_t, int, int);
#ifdef AMD756_DEBUG
static void     amd756_pir_dump(struct amd756_handle *);
#endif

const struct pciintr_icu amd756_pci_icu = {
       amd756_getclink,
       amd756_get_intr,
       amd756_set_intr,
       amd756_get_trigger,
       amd756_set_trigger,
};


int
amd756_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag,
   pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp)
{
       struct amd756_handle *ph;

       ph = malloc(sizeof(*ph), M_DEVBUF, M_NOWAIT);
       if (ph == NULL)
               return (1);

       ph->ph_iot = iot;
       ph->ph_pc = pc;
       ph->ph_tag = tag;

       *ptagp = &amd756_pci_icu;
       *phandp = ph;

#ifdef AMD756_DEBUG
       amd756_pir_dump(ph);
#endif

       return (0);
}

int
amd756_getclink(pciintr_icu_handle_t v, int link, int *clinkp)
{
       if (AMD756_LEGAL_LINK(link - 1) == 0)
               return (1);

       *clinkp = link - 1;

       return (0);
}

int
amd756_get_intr(pciintr_icu_handle_t v, int clink, int *irqp)
{
       struct amd756_handle *ph = v;
       pcireg_t reg;
       int val;

       if (AMD756_LEGAL_LINK(clink) == 0)
               return (1);

       reg = AMD756_GET_PIIRQSEL(ph);
       val = (reg >> (4 * clink)) & 0x0f;
       *irqp = (val == 0) ?
           X86_PCI_INTERRUPT_LINE_NO_CONNECTION : val;

       return (0);
}

int
amd756_set_intr(pciintr_icu_handle_t v, int clink, int irq)
{
       struct amd756_handle *ph = v;
       int val;
       pcireg_t reg;

       if (AMD756_LEGAL_LINK(clink) == 0 || AMD756_LEGAL_IRQ(irq) == 0)
               return (1);

       reg = AMD756_GET_PIIRQSEL(ph);
       amd756_get_intr(v, clink, &val);
       reg &= ~(0x000f << (4 * clink));
       reg |= irq << (4 * clink);
       AMD756_SET_PIIRQSEL(ph, reg);

       return (0);
}

int
amd756_get_trigger(pciintr_icu_handle_t v, int irq, int *triggerp)
{
       struct amd756_handle *ph = v;
       int i, pciirq;
       pcireg_t reg;

       if (AMD756_LEGAL_IRQ(irq) == 0)
               return (1);

       for (i = 0; i <= 3; i++) {
               amd756_get_intr(v, i, &pciirq);
               if (pciirq == irq) {
                       reg = AMD756_GET_EDGESEL(ph);
                       if (reg & (1 << i))
                               *triggerp = IST_EDGE;
                       else
                               *triggerp = IST_LEVEL;
                       break;
               }
       }

       return (0);
}

int
amd756_set_trigger(pciintr_icu_handle_t v, int irq, int trigger)
{
       struct amd756_handle *ph = v;
       int i, pciirq;
       pcireg_t reg;

       if (AMD756_LEGAL_IRQ(irq) == 0)
               return (1);

       for (i = 0; i <= 3; i++) {
               amd756_get_intr(v, i, &pciirq);
               if (pciirq == irq) {
                       reg = AMD756_GET_PIIRQSEL(ph);
                       if (trigger == IST_LEVEL)
                               reg &= ~(1 << (4 * i));
                       else
                               reg |= 1 << (4 * i);
                       AMD756_SET_PIIRQSEL(ph, reg);
                       break;
               }
       }

       return (0);
}

#ifdef AMD756_DEBUG
static void
amd756_pir_dump(struct amd756_handle *ph)
{
       int a, b;

       printf ("AMD756 PCI INTERRUPT ROUTING REGISTERS:\n");

       a = AMD756_GET_EDGESEL(ph);
       b = AMD756_GET_PIIRQSEL(ph);

       printf ("TRIGGER: %02x, ROUTING: %04x\n", a, b);
}
#endif

You are viewing proxied material from ftp.icm.edu.pl. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.