f6b1c44d1f
Add two new arguments to bus_dma_tag_create(): lockfunc and lockfuncarg. Lockfunc allows a driver to provide a function for managing its locking semantics while using busdma. At the moment, this is used for the asynchronous busdma_swi and callback mechanism. Two lockfunc implementations are provided: busdma_lock_mutex() performs standard mutex operations on the mutex that is specified from lockfuncarg. dftl_lock() is a panic implementation and is defaulted to when NULL, NULL are passed to bus_dma_tag_create(). The only time that NULL, NULL should ever be used is when the driver ensures that bus_dmamap_load() will not be deferred. Drivers that do not provide their own locking can pass busdma_lock_mutex,&Giant args in order to preserve the former behaviour. sparc64 and powerpc do not provide real busdma_swi functions, so this is largely a noop on those platforms. The busdma_swi on is64 is not properly locked yet, so warnings will be emitted on this platform when busdma callback deferrals happen. If anyone gets panics or warnings from dflt_lock() being called, please let me know right away. Reviewed by: tmm, gibbs
355 lines
8.8 KiB
C
355 lines
8.8 KiB
C
/*
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* Device probe and attach routines for the following
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* Advanced Systems Inc. SCSI controllers:
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*
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* Single Channel Products:
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* ABP742 - Bus-Master EISA (240 CDB)
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*
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* Dual Channel Products:
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* ABP752 - Dual Channel Bus-Master EISA (240 CDB Per Channel)
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*
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* Copyright (c) 1997 Justin Gibbs.
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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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* without modification, immediately at the beginning of the file.
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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 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 FOR
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* 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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* $FreeBSD$
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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/module.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/bus.h>
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#include <machine/bus_pio.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 <dev/eisa/eisaconf.h>
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#include <dev/advansys/advansys.h>
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#define EISA_DEVICE_ID_ADVANSYS_740 0x04507400
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#define EISA_DEVICE_ID_ADVANSYS_750 0x04507500
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#define ADV_EISA_SLOT_OFFSET 0xc00
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#define ADV_EISA_OFFSET_CHAN1 0x30
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#define ADV_EISA_OFFSET_CHAN2 0x50
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#define ADV_EISA_IOSIZE 0x100
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#define ADV_EISA_ROM_BIOS_ADDR_REG 0x86
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#define ADV_EISA_IRQ_BURST_LEN_REG 0x87
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#define ADV_EISA_IRQ_MASK 0x07
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#define ADV_EISA_IRQ_10 0x00
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#define ADV_EISA_IRQ_11 0x01
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#define ADV_EISA_IRQ_12 0x02
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#define ADV_EISA_IRQ_14 0x04
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#define ADV_EISA_IRQ_15 0x05
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#define ADV_EISA_MAX_DMA_ADDR (0x07FFFFFFL)
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#define ADV_EISA_MAX_DMA_COUNT (0x07FFFFFFL)
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/*
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* The overrun buffer shared amongst all EISA adapters.
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*/
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static u_int8_t* overrun_buf;
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static bus_dma_tag_t overrun_dmat;
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static bus_dmamap_t overrun_dmamap;
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static bus_addr_t overrun_physbase;
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static const char*
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adv_eisa_match(eisa_id_t type)
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{
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switch (type & ~0xF) {
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case EISA_DEVICE_ID_ADVANSYS_740:
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return ("AdvanSys ABP-740/742 SCSI adapter");
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break;
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case EISA_DEVICE_ID_ADVANSYS_750:
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return ("AdvanSys ABP-750/752 SCSI 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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adv_eisa_probe(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_int8_t irq;
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desc = adv_eisa_match(eisa_get_id(dev));
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if (!desc)
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return (ENXIO);
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device_set_desc(dev, desc);
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iobase = (eisa_get_slot(dev) * EISA_SLOT_SIZE) + ADV_EISA_SLOT_OFFSET;
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eisa_add_iospace(dev, iobase, ADV_EISA_IOSIZE, RESVADDR_NONE);
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irq = inb(iobase + ADV_EISA_IRQ_BURST_LEN_REG);
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irq &= ADV_EISA_IRQ_MASK;
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switch (irq) {
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case 0:
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case 1:
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case 2:
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case 4:
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case 5:
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break;
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default:
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printf("adv at slot %d: illegal "
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"irq setting %d\n", eisa_get_slot(dev),
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irq);
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return ENXIO;
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}
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eisa_add_intr(dev, irq + 10, EISA_TRIGGER_LEVEL);
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return 0;
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}
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static int
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adv_eisa_attach(device_t dev)
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{
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struct adv_softc *adv;
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struct adv_softc *adv_b;
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struct resource *io;
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struct resource *irq;
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int rid, error;
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void *ih;
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adv_b = NULL;
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rid = 0;
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io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
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0, ~0, 1, RF_ACTIVE);
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if (!io) {
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device_printf(dev, "No I/O space?!\n");
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return ENOMEM;
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}
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rid = 0;
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irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
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0, ~0, 1, RF_SHAREABLE | RF_ACTIVE);
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if (!irq) {
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device_printf(dev, "No irq?!\n");
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bus_release_resource(dev, SYS_RES_IOPORT, 0, io);
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return ENOMEM;
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}
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switch (eisa_get_id(dev) & ~0xF) {
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case EISA_DEVICE_ID_ADVANSYS_750:
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adv_b = adv_alloc(dev, rman_get_bustag(io),
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rman_get_bushandle(io) + ADV_EISA_OFFSET_CHAN2);
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if (adv_b == NULL)
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goto bad;
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/*
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* Allocate a parent dmatag for all tags created
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* by the MI portions of the advansys driver
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*/
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/* XXX Should be a child of the PCI bus dma tag */
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error = bus_dma_tag_create(
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/* parent */ NULL,
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/* alignment */ 1,
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/* boundary */ 0,
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/* lowaddr */ ADV_EISA_MAX_DMA_ADDR,
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/* highaddr */ BUS_SPACE_MAXADDR,
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/* filter */ NULL,
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/* filterarg */ NULL,
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/* maxsize */ BUS_SPACE_MAXSIZE_32BIT,
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/* nsegments */ ~0,
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/* maxsegsz */ ADV_EISA_MAX_DMA_COUNT,
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/* flags */ 0,
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/* lockfunc */ busdma_lock_mutex,
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/* lockarg */ &Giant,
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&adv_b->parent_dmat);
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if (error != 0) {
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printf("%s: Could not allocate DMA tag - error %d\n",
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adv_name(adv_b), error);
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adv_free(adv_b);
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goto bad;
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}
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adv_b->init_level++;
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/* FALLTHROUGH */
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case EISA_DEVICE_ID_ADVANSYS_740:
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adv = adv_alloc(dev, rman_get_bustag(io),
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rman_get_bushandle(io) + ADV_EISA_OFFSET_CHAN1);
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if (adv == NULL) {
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if (adv_b != NULL)
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adv_free(adv_b);
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goto bad;
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}
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/*
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* Allocate a parent dmatag for all tags created
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* by the MI portions of the advansys driver
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*/
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/* XXX Should be a child of the PCI bus dma tag */
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error = bus_dma_tag_create(
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/* parent */ NULL,
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/* alignment */ 1,
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/* boundary */ 0,
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/* lowaddr */ ADV_EISA_MAX_DMA_ADDR,
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/* highaddr */ BUS_SPACE_MAXADDR,
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/* filter */ NULL,
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/* filterarg */ NULL,
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/* maxsize */ BUS_SPACE_MAXSIZE_32BIT,
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/* nsegments */ ~0,
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/* maxsegsz */ ADV_EISA_MAX_DMA_COUNT,
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/* flags */ 0,
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/* lockfunc */ busdma_lock_mutex,
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/* lockarg */ &Giant,
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&adv->parent_dmat);
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if (error != 0) {
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printf("%s: Could not allocate DMA tag - error %d\n",
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adv_name(adv), error);
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adv_free(adv);
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goto bad;
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}
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adv->init_level++;
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break;
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default:
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printf("adveisaattach: Unknown device type!\n");
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goto bad;
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break;
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}
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if (overrun_buf == NULL) {
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/* Need to allocate our overrun buffer */
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if (bus_dma_tag_create(
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/* parent */ adv->parent_dmat,
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/* alignment */ 8,
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/* boundary */ 0,
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/* lowaddr */ ADV_EISA_MAX_DMA_ADDR,
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/* highaddr */ BUS_SPACE_MAXADDR,
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/* filter */ NULL,
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/* filterarg */ NULL,
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/* maxsize */ ADV_OVERRUN_BSIZE,
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/* nsegments */ 1,
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/* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
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/* flags */ 0,
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/* lockfunc */ busdma_lock_mutex,
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/* lockarg */ &Giant,
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&overrun_dmat) != 0) {
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adv_free(adv);
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goto bad;
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}
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if (bus_dmamem_alloc(overrun_dmat,
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(void **)&overrun_buf,
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BUS_DMA_NOWAIT,
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&overrun_dmamap) != 0) {
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bus_dma_tag_destroy(overrun_dmat);
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adv_free(adv);
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goto bad;
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}
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/* And permanently map it in */
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bus_dmamap_load(overrun_dmat, overrun_dmamap,
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overrun_buf, ADV_OVERRUN_BSIZE,
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adv_map, &overrun_physbase,
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/*flags*/0);
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}
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/*
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* Now that we know we own the resources we need, do the
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* card initialization.
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*/
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/*
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* Stop the chip.
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*/
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ADV_OUTB(adv, ADV_CHIP_CTRL, ADV_CC_HALT);
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ADV_OUTW(adv, ADV_CHIP_STATUS, 0);
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adv->chip_version = EISA_REVISION_ID(eisa_get_id(dev))
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+ ADV_CHIP_MIN_VER_EISA - 1;
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if (adv_init(adv) != 0) {
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adv_free(adv);
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if (adv_b != NULL)
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adv_free(adv_b);
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return(-1);
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}
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adv->max_dma_count = ADV_EISA_MAX_DMA_COUNT;
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adv->max_dma_addr = ADV_EISA_MAX_DMA_ADDR;
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if (adv_b != NULL) {
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/*
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* Stop the chip.
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*/
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ADV_OUTB(adv_b, ADV_CHIP_CTRL, ADV_CC_HALT);
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ADV_OUTW(adv_b, ADV_CHIP_STATUS, 0);
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adv_b->chip_version = EISA_REVISION_ID(eisa_get_id(dev))
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+ ADV_CHIP_MIN_VER_EISA - 1;
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if (adv_init(adv_b) != 0) {
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adv_free(adv_b);
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} else {
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adv_b->max_dma_count = ADV_EISA_MAX_DMA_COUNT;
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adv_b->max_dma_addr = ADV_EISA_MAX_DMA_ADDR;
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}
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}
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/*
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* Enable our interrupt handler.
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*/
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bus_setup_intr(dev, irq, INTR_TYPE_CAM|INTR_ENTROPY, adv_intr, adv, &ih);
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/* Attach sub-devices - always succeeds */
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adv_attach(adv);
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if (adv_b != NULL)
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adv_attach(adv_b);
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return 0;
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bad:
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bus_release_resource(dev, SYS_RES_IOPORT, 0, io);
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bus_release_resource(dev, SYS_RES_IRQ, 0, irq);
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return -1;
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}
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static device_method_t adv_eisa_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, adv_eisa_probe),
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DEVMETHOD(device_attach, adv_eisa_attach),
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{ 0, 0 }
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};
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static driver_t adv_eisa_driver = {
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"adv", adv_eisa_methods, sizeof(struct adv_softc)
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};
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static devclass_t adv_eisa_devclass;
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DRIVER_MODULE(adv, eisa, adv_eisa_driver, adv_eisa_devclass, 0, 0);
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