71098608fc
just two different attachments (EISA and PCI) to a single driver. - Add real locking. Previously these drivers only acquired their lock in their interrupt handler or in the ioctl routine (but too broadly in the latter). No locking was used for the stack calling down into the driver via if_init() or if_start(), for device shutdown or detach. Also, the interrupt handler held the driver lock while calling if_input(). All this stuff should be fixed in the locking changes. - Really fix these drivers to handle if_alloc(). The front-end attachments were using if_initname() before the ifnet was allocated. Fix this by moving some of the duplicated logic from each driver into pdq_ifattach(). While here, make pdq_ifattach() return an error so that the driver just fails to attach if if_alloc() fails rather than panic'ing. Also, defer freeing the ifnet until the driver has stopped using it during detach. - Add a new private timer to drive the watchdog timer. - Pass the softc pointer to the interrupt handlers instead of the device_t so we can avoid the use of device_get_softc() and to better match what other drivers do.
285 lines
7.0 KiB
C
285 lines
7.0 KiB
C
/*-
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* Copyright (c) 1995, 1996 Matt Thomas <matt@3am-software.com>
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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, this list of conditions and the following disclaimer.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* DEC PDQ FDDI Controller
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*
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* This module support the DEFEA EISA FDDI Controller.
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*/
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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/socket.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <net/fddi.h>
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#include <dev/eisa/eisaconf.h>
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#include <dev/pdq/pdq_freebsd.h>
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#include <dev/pdq/pdqreg.h>
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static void pdq_eisa_subprobe (pdq_bus_t, u_int32_t, u_int32_t *, u_int32_t *, u_int32_t *);
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static void pdq_eisa_devinit (pdq_softc_t *);
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static const char * pdq_eisa_match (eisa_id_t);
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static int pdq_eisa_probe (device_t);
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static int pdq_eisa_attach (device_t);
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static int pdq_eisa_detach (device_t);
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static int pdq_eisa_shutdown (device_t);
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static void pdq_eisa_ifintr (void *);
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#define DEFEA_IRQS 0x0000FBA9U
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#define DEFEA_INTRENABLE 0x8 /* level interrupt */
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#define DEFEA_DECODE_IRQ(n) ((DEFEA_IRQS >> ((n) << 2)) & 0x0f)
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#define EISA_DEVICE_ID_DEC_DEC3001 0x10a33001
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#define EISA_DEVICE_ID_DEC_DEC3002 0x10a33002
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#define EISA_DEVICE_ID_DEC_DEC3003 0x10a33003
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#define EISA_DEVICE_ID_DEC_DEC3004 0x10a33004
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static void
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pdq_eisa_subprobe(bc, iobase, maddr, msize, irq)
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pdq_bus_t bc;
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u_int32_t iobase;
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u_int32_t *maddr;
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u_int32_t *msize;
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u_int32_t *irq;
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{
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if (irq != NULL)
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*irq = DEFEA_DECODE_IRQ(PDQ_OS_IORD_8(bc, iobase, PDQ_EISA_IO_CONFIG_STAT_0) & 3);
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*maddr = (PDQ_OS_IORD_8(bc, iobase, PDQ_EISA_MEM_ADD_CMP_0) << 8)
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| (PDQ_OS_IORD_8(bc, iobase, PDQ_EISA_MEM_ADD_CMP_1) << 16);
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*msize = (PDQ_OS_IORD_8(bc, iobase, PDQ_EISA_MEM_ADD_MASK_0) + 4) << 8;
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return;
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}
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static void
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pdq_eisa_devinit (sc)
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pdq_softc_t *sc;
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{
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pdq_uint8_t data;
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/*
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* Do the standard initialization for the DEFEA registers.
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*/
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PDQ_OS_IOWR_8(sc->io_bst, sc->io_bsh, PDQ_EISA_FUNCTION_CTRL, 0x23);
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PDQ_OS_IOWR_8(sc->io_bst, sc->io_bsh, PDQ_EISA_IO_CMP_1_1, (sc->io_bsh >> 8) & 0xF0);
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PDQ_OS_IOWR_8(sc->io_bst, sc->io_bsh, PDQ_EISA_IO_CMP_0_1, (sc->io_bsh >> 8) & 0xF0);
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PDQ_OS_IOWR_8(sc->io_bst, sc->io_bsh, PDQ_EISA_SLOT_CTRL, 0x01);
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data = PDQ_OS_IORD_8(sc->io_bst, sc->io_bsh, PDQ_EISA_BURST_HOLDOFF);
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#if defined(PDQ_IOMAPPED)
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PDQ_OS_IOWR_8(sc->io_bst, sc->io_bsh, PDQ_EISA_BURST_HOLDOFF, data & ~1);
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#else
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PDQ_OS_IOWR_8(sc->io_bst, sc->io_bsh, PDQ_EISA_BURST_HOLDOFF, data | 1);
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#endif
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data = PDQ_OS_IORD_8(sc->io_bst, sc->io_bsh, PDQ_EISA_IO_CONFIG_STAT_0);
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PDQ_OS_IOWR_8(sc->io_bst, sc->io_bsh, PDQ_EISA_IO_CONFIG_STAT_0, data | DEFEA_INTRENABLE);
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return;
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}
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static const char *
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pdq_eisa_match (type)
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eisa_id_t type;
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{
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switch (type) {
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case EISA_DEVICE_ID_DEC_DEC3001:
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case EISA_DEVICE_ID_DEC_DEC3002:
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case EISA_DEVICE_ID_DEC_DEC3003:
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case EISA_DEVICE_ID_DEC_DEC3004:
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return ("DEC FDDIcontroller/EISA Adapter");
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break;
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default:
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break;
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}
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return (NULL);
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}
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static int
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pdq_eisa_probe (dev)
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device_t dev;
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{
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const char *desc;
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u_int32_t iobase;
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u_int32_t irq;
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u_int32_t maddr;
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u_int32_t msize;
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u_int32_t eisa_id = eisa_get_id(dev);;
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desc = pdq_eisa_match(eisa_id);
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if (!desc) {
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return (ENXIO);
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}
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device_set_desc(dev, desc);
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iobase = eisa_get_slot(dev) * EISA_SLOT_SIZE;
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pdq_eisa_subprobe((pdq_bus_t)SYS_RES_IOPORT, iobase, &maddr, &msize, &irq);
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eisa_add_iospace(dev, iobase, 0x200, RESVADDR_NONE);
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eisa_add_mspace(dev, maddr, msize, RESVADDR_NONE);
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eisa_add_intr(dev, irq, EISA_TRIGGER_LEVEL);
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return (0);
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}
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static void
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pdq_eisa_ifintr(arg)
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void * arg;
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{
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pdq_softc_t * sc;
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sc = arg;
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PDQ_LOCK(sc);
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(void) pdq_interrupt(sc->sc_pdq);
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PDQ_LOCK(sc);
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return;
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}
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static int
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pdq_eisa_attach (dev)
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device_t dev;
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{
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pdq_softc_t * sc;
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int error;
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sc = device_get_softc(dev);
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sc->dev = dev;
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sc->io_rid = 0;
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sc->io_type = SYS_RES_IOPORT;
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sc->io = bus_alloc_resource_any(dev, sc->io_type, &sc->io_rid,
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RF_ACTIVE);
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if (!sc->io) {
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device_printf(dev, "Unable to allocate I/O space resource.\n");
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error = ENXIO;
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goto bad;
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}
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sc->io_bsh = rman_get_bushandle(sc->io);
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sc->io_bst = rman_get_bustag(sc->io);
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sc->mem_rid = 0;
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sc->mem_type = SYS_RES_MEMORY;
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sc->mem = bus_alloc_resource_any(dev, sc->mem_type, &sc->mem_rid,
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RF_ACTIVE);
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if (!sc->mem) {
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device_printf(dev, "Unable to allocate memory resource.\n");
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error = ENXIO;
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goto bad;
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}
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sc->mem_bsh = rman_get_bushandle(sc->mem);
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sc->mem_bst = rman_get_bustag(sc->mem);
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sc->irq_rid = 0;
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sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
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RF_SHAREABLE | RF_ACTIVE);
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if (!sc->irq) {
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device_printf(dev, "Unable to allocate interrupt resource.\n");
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error = ENXIO;
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goto bad;
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}
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pdq_eisa_devinit(sc);
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error = pdq_ifattach(sc, sc->sc_pdq->pdq_hwaddr.lanaddr_bytes,
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PDQ_DEFEA);
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if (error)
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goto bad;
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error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
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NULL, pdq_eisa_ifintr, sc, &sc->irq_ih);
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if (error) {
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device_printf(dev, "Failed to setup interrupt handler.\n");
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pdq_ifdetach(sc);
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return (error);
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}
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return (0);
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bad:
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pdq_free(dev);
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return (error);
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}
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static int
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pdq_eisa_detach (dev)
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device_t dev;
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{
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pdq_softc_t * sc;
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sc = device_get_softc(dev);
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pdq_ifdetach(sc);
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return (0);
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}
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static int
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pdq_eisa_shutdown(dev)
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device_t dev;
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{
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pdq_softc_t * sc;
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sc = device_get_softc(dev);
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PDQ_LOCK(sc);
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pdq_hwreset(sc->sc_pdq);
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PDQ_UNLOCK(sc);
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return (0);
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}
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static device_method_t pdq_eisa_methods[] = {
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DEVMETHOD(device_probe, pdq_eisa_probe),
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DEVMETHOD(device_attach, pdq_eisa_attach),
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DEVMETHOD(device_attach, pdq_eisa_detach),
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DEVMETHOD(device_shutdown, pdq_eisa_shutdown),
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{ 0, 0 }
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};
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static driver_t pdq_eisa_driver = {
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"fea",
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pdq_eisa_methods,
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sizeof(pdq_softc_t),
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};
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DRIVER_MODULE(fea, eisa, pdq_eisa_driver, pdq_devclass, 0, 0);
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/* MODULE_DEPEND(fea, eisa, 1, 1, 1); */
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MODULE_DEPEND(fea, fddi, 1, 1, 1);
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