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208 lines
5.8 KiB
C
208 lines
5.8 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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/*
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* Cyclades Y PCI serial interface driver
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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/kernel.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <dev/pci/pcivar.h>
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#define CY_PCI_BASE_ADDR0 0x10
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#define CY_PCI_BASE_ADDR1 0x14
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#define CY_PCI_BASE_ADDR2 0x18
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#define CY_PLX_9050_ICS 0x4c
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#define CY_PLX_9060_ICS 0x68
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#define CY_PLX_9050_ICS_IENABLE 0x040
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#define CY_PLX_9050_ICS_LOCAL_IENABLE 0x001
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#define CY_PLX_9050_ICS_LOCAL_IPOLARITY 0x002
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#define CY_PLX_9060_ICS_IENABLE 0x100
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#define CY_PLX_9060_ICS_LOCAL_IENABLE 0x800
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/* Cyclom-Y Custom Register for PLX ID. */
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#define PLX_VER 0x3400
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#define PLX_9050 0x0b
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#define PLX_9060 0x0c
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#define PLX_9080 0x0d
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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 int cy_pci_attach(device_t dev);
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static int cy_pci_probe(device_t dev);
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static device_method_t cy_pci_methods[] = {
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/* Device interface. */
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DEVMETHOD(device_probe, cy_pci_probe),
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DEVMETHOD(device_attach, cy_pci_attach),
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{ 0, 0 }
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};
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static driver_t cy_pci_driver = {
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"cy",
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cy_pci_methods,
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0,
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};
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static devclass_t cy_devclass;
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DRIVER_MODULE(cy, pci, cy_pci_driver, cy_devclass, 0, 0);
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MODULE_DEPEND(cy, pci, 1, 1, 1);
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static int
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cy_pci_probe(dev)
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device_t dev;
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{
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u_int32_t device_id;
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device_id = pci_get_devid(dev);
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device_id &= ~0x00060000;
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if (device_id != 0x0100120e && device_id != 0x0101120e)
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return (ENXIO);
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device_set_desc(dev, "Cyclades Cyclom-Y Serial Adapter");
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return (0);
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}
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static int
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cy_pci_attach(dev)
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device_t dev;
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{
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struct resource *ioport_res, *irq_res, *mem_res;
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void *irq_cookie, *vaddr;
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u_int32_t ioport;
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int adapter, irq_setup, ioport_rid, irq_rid, mem_rid;
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u_char plx_ver;
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ioport_res = NULL;
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irq_res = NULL;
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mem_res = NULL;
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ioport_rid = CY_PCI_BASE_ADDR1;
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ioport_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &ioport_rid,
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0ul, ~0ul, 0ul, RF_ACTIVE);
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if (ioport_res == NULL) {
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device_printf(dev, "ioport resource allocation failed\n");
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goto fail;
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}
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ioport = rman_get_start(ioport_res);
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mem_rid = CY_PCI_BASE_ADDR2;
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mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &mem_rid,
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0ul, ~0ul, 0ul, RF_ACTIVE);
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if (mem_res == NULL) {
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device_printf(dev, "memory resource allocation failed\n");
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goto fail;
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}
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vaddr = rman_get_virtual(mem_res);
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adapter = cyattach_common(vaddr, 1);
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if (adapter < 0) {
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device_printf(dev, "no ports found!\n");
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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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irq_rid = 0;
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irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &irq_rid, 0ul, ~0ul, 0ul,
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RF_SHAREABLE | RF_ACTIVE);
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if (irq_res == NULL) {
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device_printf(dev, "interrupt resource allocation failed\n");
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goto fail;
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}
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#ifdef CY_PCI_FASTINTR
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irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY | INTR_FAST,
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(driver_intr_t *)cyintr, (void *)adapter, &irq_cookie);
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#else
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irq_setup = ENXIO;
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#endif
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if (irq_setup != 0)
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irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY,
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(driver_intr_t *)cyintr, (void *)adapter, &irq_cookie);
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if (irq_setup != 0) {
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device_printf(dev, "interrupt setup failed\n");
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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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CY_PLX_9050_ICS_IENABLE | CY_PLX_9050_ICS_LOCAL_IENABLE |
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CY_PLX_9050_ICS_LOCAL_IPOLARITY);
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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 (0);
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fail:
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if (ioport_res != NULL)
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bus_release_resource(dev, SYS_RES_IOPORT, ioport_rid,
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ioport_res);
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if (irq_res != NULL)
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bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res);
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if (mem_res != NULL)
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bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res);
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return (ENXIO);
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}
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