b8cf6ea776
if option CY_PCI_FASTINTR is configured and mapping the irq to a fastintr is possible. Unfortunately, this has to be optional because pci_map_int_right() doesn't handle the INTR_EXCL flag right -- INTR_EXCL is honoured even if the interrupt needs to be non-exclusive for other devices to work.
158 lines
4.4 KiB
C
158 lines
4.4 KiB
C
/*
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* Copyright (c) 1996, David Greenman
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: cy_pci.c,v 1.9 1999/01/11 23:43:54 bde Exp $
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*/
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/*
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* Cyclades Y PCI serial interface driver
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*/
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#include "pci.h"
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#if NPCI > 0
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#include "opt_cy_pci_fastintr.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/interrupt.h>
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#include <sys/kernel.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <pci/pcivar.h>
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#include <pci/cy_pcireg.h>
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static const char *cy_probe __P((pcici_t, pcidi_t));
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static void cy_attach __P((pcici_t, int));
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extern int cyattach_common(void *, int); /* Not exactly correct */
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extern void cyintr(int);
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static u_long cy_count;
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static struct pci_device cy_device = {
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"cy",
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cy_probe,
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cy_attach,
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&cy_count,
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NULL
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};
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DATA_SET(pcidevice_set, cy_device);
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static const char *
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cy_probe(config_id, device_id)
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pcici_t config_id;
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pcidi_t device_id;
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{
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if ((device_id & 0xffff) == CY_VENDORID_CYCLADES &&
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((device_id >> 16) == CY_DEVICEID_CYCLOM_Y_1 ||
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(device_id >> 16) == CY_DEVICEID_CYCLOM_Y_2))
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return ("Cyclades Cyclom-Y Serial Adapter");
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return NULL;
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}
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static void
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cy_attach(config_id, unit)
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pcici_t config_id;
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int unit;
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{
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vm_offset_t paddr;
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void *vaddr;
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u_int32_t ioport;
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int adapter;
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u_char plx_ver;
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ioport = (u_int32_t) pci_conf_read(config_id, CY_PCI_BASE_ADDR1) & ~0x3;
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paddr = pci_conf_read(config_id, CY_PCI_BASE_ADDR2) & ~0xf;
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#if 0
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if (!pci_map_mem(config_id, CY_PCI_BASE_ADDR2, &vaddr, &paddr)) {
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printf("cy%d: couldn't map shared memory\n", unit);
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return;
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};
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#endif
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vaddr = pmap_mapdev(paddr, 0x4000);
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adapter = cyattach_common(vaddr, 1);
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if (adapter < 0) {
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/*
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* No ports found. Release resources and punt.
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*/
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printf("cy%d: no ports found!", unit);
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goto fail;
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}
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/*
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* Allocate our interrupt.
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* XXX Using the ISA interrupt handler directly is a bit of a violation
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* since it doesn't actually take the same argument. For PCI, the
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* argument is a void * token, but for ISA it is a unit. Since
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* there is no overlap in PCI/ISA unit numbers for this driver, and
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* since the ISA driver must handle the interrupt anyway, we use
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* the unit number as the token even for PCI.
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*/
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if (
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#ifdef CY_PCI_FASTINTR
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!pci_map_int_right(config_id, (pci_inthand_t *)cyintr,
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(void *)adapter, &tty_imask,
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INTR_EXCL | INTR_FAST) &&
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#endif
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!pci_map_int_right(config_id, (pci_inthand_t *)cyintr,
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(void *)adapter, &tty_imask, 0)) {
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printf("cy%d: couldn't map interrupt\n", unit);
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goto fail;
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}
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/*
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* Enable the "local" interrupt input to generate a
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* PCI interrupt.
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*/
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plx_ver = *((u_char *)vaddr + PLX_VER) & 0x0f;
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switch (plx_ver) {
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case PLX_9050:
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outw(ioport + CY_PLX_9050_ICS,
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inw(ioport + CY_PLX_9050_ICS) | CY_PLX_9050_ICS_IENABLE |
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CY_PLX_9050_ICS_LOCAL_IENABLE);
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break;
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case PLX_9060:
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case PLX_9080:
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default: /* Old board, use PLX_9060 values. */
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outw(ioport + CY_PLX_9060_ICS,
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inw(ioport + CY_PLX_9060_ICS) | CY_PLX_9060_ICS_IENABLE |
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CY_PLX_9060_ICS_LOCAL_IENABLE);
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break;
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}
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return;
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fail:
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/* XXX should release any allocated virtual memory */
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return;
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}
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#endif /* NPCI > 0 */
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