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/*
* Copyright (c) 1996, David Greenman
* 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 unmodified, 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 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.
*
* $FreeBSD$
*/
/*
* Cyclades Y PCI serial interface driver
*/
#include "opt_cy_pci_fastintr.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <dev/pci/pcivar.h>
#define CY_PCI_BASE_ADDR0 0x10
#define CY_PCI_BASE_ADDR1 0x14
#define CY_PCI_BASE_ADDR2 0x18
#define CY_PLX_9050_ICS 0x4c
#define CY_PLX_9060_ICS 0x68
#define CY_PLX_9050_ICS_IENABLE 0x040
#define CY_PLX_9050_ICS_LOCAL_IENABLE 0x001
#define CY_PLX_9050_ICS_LOCAL_IPOLARITY 0x002
#define CY_PLX_9060_ICS_IENABLE 0x100
#define CY_PLX_9060_ICS_LOCAL_IENABLE 0x800
/* Cyclom-Y Custom Register for PLX ID. */
#define PLX_VER 0x3400
#define PLX_9050 0x0b
#define PLX_9060 0x0c
#define PLX_9080 0x0d
extern int cyattach_common(void *, int); /* Not exactly correct */
extern void cyintr(int);
static int cy_pci_attach(device_t dev);
static int cy_pci_probe(device_t dev);
static device_method_t cy_pci_methods[] = {
/* Device interface. */
DEVMETHOD(device_probe, cy_pci_probe),
DEVMETHOD(device_attach, cy_pci_attach),
{ 0, 0 }
};
static driver_t cy_pci_driver = {
"cy",
cy_pci_methods,
0,
};
static devclass_t cy_devclass;
DRIVER_MODULE(cy, pci, cy_pci_driver, cy_devclass, 0, 0);
static int
cy_pci_probe(dev)
device_t dev;
{
u_int32_t device_id;
device_id = pci_get_devid(dev);
device_id &= ~0x00060000;
if (device_id != 0x0100120e && device_id != 0x0101120e)
return (ENXIO);
device_set_desc(dev, "Cyclades Cyclom-Y Serial Adapter");
return (0);
}
static int
cy_pci_attach(dev)
device_t dev;
{
struct resource *ioport_res, *irq_res, *mem_res;
void *irq_cookie, *vaddr;
u_int32_t ioport;
int adapter, irq_setup, ioport_rid, irq_rid, mem_rid;
u_char plx_ver;
ioport_res = NULL;
irq_res = NULL;
mem_res = NULL;
ioport_rid = CY_PCI_BASE_ADDR1;
ioport_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &ioport_rid,
0ul, ~0ul, 0ul, RF_ACTIVE);
if (ioport_res == NULL) {
device_printf(dev, "ioport resource allocation failed\n");
goto fail;
}
ioport = rman_get_start(ioport_res);
mem_rid = CY_PCI_BASE_ADDR2;
mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &mem_rid,
0ul, ~0ul, 0ul, RF_ACTIVE);
if (mem_res == NULL) {
device_printf(dev, "memory resource allocation failed\n");
goto fail;
}
vaddr = rman_get_virtual(mem_res);
adapter = cyattach_common(vaddr, 1);
if (adapter < 0) {
device_printf(dev, "no ports found!\n");
goto fail;
}
/*
* Allocate our interrupt.
* XXX Using the ISA interrupt handler directly is a bit of a violation
* since it doesn't actually take the same argument. For PCI, the
* argument is a void * token, but for ISA it is a unit. Since
* there is no overlap in PCI/ISA unit numbers for this driver, and
* since the ISA driver must handle the interrupt anyway, we use
* the unit number as the token even for PCI.
*/
irq_rid = 0;
irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &irq_rid, 0ul, ~0ul, 0ul,
RF_SHAREABLE | RF_ACTIVE);
if (irq_res == NULL) {
device_printf(dev, "interrupt resource allocation failed\n");
goto fail;
}
#ifdef CY_PCI_FASTINTR
irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY | INTR_FAST,
(driver_intr_t *)cyintr, (void *)adapter, &irq_cookie);
#else
irq_setup = ENXIO;
#endif
if (irq_setup != 0)
irq_setup = bus_setup_intr(dev, irq_res, INTR_TYPE_TTY,
(driver_intr_t *)cyintr, (void *)adapter, &irq_cookie);
if (irq_setup != 0) {
device_printf(dev, "interrupt setup failed\n");
goto fail;
}
/*
* Enable the "local" interrupt input to generate a
* PCI interrupt.
*/
plx_ver = *((u_char *)vaddr + PLX_VER) & 0x0f;
switch (plx_ver) {
case PLX_9050:
outw(ioport + CY_PLX_9050_ICS,
CY_PLX_9050_ICS_IENABLE | CY_PLX_9050_ICS_LOCAL_IENABLE |
CY_PLX_9050_ICS_LOCAL_IPOLARITY);
break;
case PLX_9060:
case PLX_9080:
default: /* Old board, use PLX_9060 values. */
outw(ioport + CY_PLX_9060_ICS,
inw(ioport + CY_PLX_9060_ICS) | CY_PLX_9060_ICS_IENABLE |
CY_PLX_9060_ICS_LOCAL_IENABLE);
break;
}
return (0);
fail:
if (ioport_res != NULL)
bus_release_resource(dev, SYS_RES_IOPORT, ioport_rid,
ioport_res);
if (irq_res != NULL)
bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res);
if (mem_res != NULL)
bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res);
return (ENXIO);
}
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