Add ISA attachement files for the aic7xxx driver.
Approved by: re Reminded by: obrien
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gibbs
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299
sys/dev/aic7xxx/ahc_isa.c
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299
sys/dev/aic7xxx/ahc_isa.c
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/*
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* FreeBSD, VLB/ISA product support functions
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*
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* Copyright (c) 2004 Justin T. 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.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*
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* $Id$
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <dev/aic7xxx/aic7xxx_osm.h>
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#include <sys/limits.h> /* For CHAR_BIT*/
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#include <dev/eisa/eisaconf.h> /* For EISA constants */
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#include <isa/isavar.h> /* For ISA attach glue */
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static struct aic7770_identity *ahc_isa_find_device(bus_space_tag_t tag,
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bus_space_handle_t bsh);
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static void ahc_isa_identify(driver_t *driver,
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device_t parent);
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static int ahc_isa_probe(device_t dev);
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static int ahc_isa_attach(device_t dev);
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/*
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* Perform an EISA probe of the address with the addition
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* of a "priming" step. The 284X requires priming (a write
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* to offset 0x80, the first EISA ID register) to ensure it
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* is not mistaken as an EISA card. Once we have the ID,
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* lookup the controller in the aic7770 table of supported
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* devices.
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*/
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static struct aic7770_identity *
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ahc_isa_find_device(bus_space_tag_t tag, bus_space_handle_t bsh) {
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eisa_id_t id;
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u_int id_size;
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int i;
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id = 0;
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id_size = sizeof(id);
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for (i = 0; i < id_size; i++) {
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bus_space_write_1(tag, bsh, 0x80, 0x80 + i);
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id |= bus_space_read_1(tag, bsh, 0x80 + i)
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<< ((id_size - i - 1) * CHAR_BIT);
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}
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return (aic7770_find_device(id));
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}
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static void
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ahc_isa_identify(driver_t *driver, device_t parent)
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{
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int slot;
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int max_slot;
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max_slot = 14;
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for (slot = 0; slot <= max_slot; slot++) {
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struct aic7770_identity *entry;
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bus_space_tag_t tag;
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bus_space_handle_t bsh;
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struct resource *regs;
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uint32_t iobase;
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int rid;
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rid = 0;
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iobase = (slot * EISA_SLOT_SIZE) + AHC_EISA_SLOT_OFFSET;
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regs = bus_alloc_resource(parent, SYS_RES_IOPORT, &rid,
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iobase, iobase, AHC_EISA_IOSIZE,
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RF_ACTIVE);
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if (regs == NULL) {
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if (bootverbose)
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printf("ahc_isa_probe %d: ioport 0x%x "
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"alloc failed\n", slot, iobase);
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continue;
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}
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tag = rman_get_bustag(regs);
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bsh = rman_get_bushandle(regs);
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entry = ahc_isa_find_device(tag, bsh);
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if (entry != NULL) {
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device_t child;
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child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE,
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"ahc", -1);
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if (child != NULL) {
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device_set_driver(child, driver);
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bus_set_resource(child, SYS_RES_IOPORT,
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0, iobase, AHC_EISA_IOSIZE);
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}
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}
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bus_release_resource(parent, SYS_RES_IOPORT, rid, regs);
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}
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}
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static int
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ahc_isa_probe(device_t dev)
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{
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struct aic7770_identity *entry;
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bus_space_tag_t tag;
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bus_space_handle_t bsh;
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struct resource *regs;
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struct resource *irq;
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uint32_t iobase;
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u_int intdef;
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u_int hcntrl;
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int irq_num;
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int error;
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int zero;
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iobase = isa_get_port(dev);
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error = ENODEV;
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zero = 0;
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regs = NULL;
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irq = NULL;
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regs = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &zero, RF_ACTIVE);
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if (regs == NULL) {
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device_printf(dev, "ioport 0x%x alloc failed\n", iobase);
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return (ENOMEM);
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}
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tag = rman_get_bustag(regs);
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bsh = rman_get_bushandle(regs);
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entry = ahc_isa_find_device(tag, bsh);
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if (entry == NULL)
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goto cleanup;
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/* Pause the card preseving the IRQ type */
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hcntrl = bus_space_read_1(tag, bsh, HCNTRL) & IRQMS;
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bus_space_write_1(tag, bsh, HCNTRL, hcntrl | PAUSE);
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while ((bus_space_read_1(tag, bsh, HCNTRL) & PAUSE) == 0)
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;
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/* Make sure we have a valid interrupt vector */
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intdef = bus_space_read_1(tag, bsh, INTDEF);
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irq_num = intdef & VECTOR;
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switch (irq_num) {
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case 9:
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case 10:
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case 11:
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case 12:
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case 14:
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case 15:
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break;
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default:
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device_printf(dev, "@0x%x: illegal irq setting %d\n",
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iobase, irq_num);
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goto cleanup;
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}
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if (bus_set_resource(dev, SYS_RES_IRQ, zero, irq_num, 1) != 0)
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goto cleanup;
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/*
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* The 284X only supports edge triggered interrupts,
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* so do not claim RF_SHAREABLE.
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*/
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irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero,
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0 /*!(RF_ACTIVE|RF_SHAREABLE)*/);
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if (irq != NULL) {
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error = 0;
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device_set_desc(dev, entry->name);
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} else
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device_printf(dev, "@0x%x: irq %d allocation failed\n",
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iobase, irq_num);
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cleanup:
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if (regs != NULL) {
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bus_release_resource(dev, SYS_RES_IOPORT, zero, regs);
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regs = NULL;
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}
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if (irq != NULL) {
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bus_release_resource(dev, SYS_RES_IRQ, zero, irq);
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irq = NULL;
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}
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return (error);
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}
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static int
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ahc_isa_attach(device_t dev)
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{
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struct aic7770_identity *entry;
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bus_space_tag_t tag;
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bus_space_handle_t bsh;
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struct resource *regs;
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struct ahc_softc *ahc;
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char *name;
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int zero;
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int error;
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zero = 0;
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regs = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &zero, RF_ACTIVE);
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if (regs == NULL)
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return (ENOMEM);
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tag = rman_get_bustag(regs);
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bsh = rman_get_bushandle(regs);
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entry = ahc_isa_find_device(tag, bsh);
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bus_release_resource(dev, SYS_RES_IOPORT, zero, regs);
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if (entry == NULL)
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return (ENODEV);
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/*
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* Allocate a softc for this card and
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* set it up for attachment by our
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* common detect routine.
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*/
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name = malloc(strlen(device_get_nameunit(dev)) + 1, M_DEVBUF, M_NOWAIT);
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if (name == NULL)
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return (ENOMEM);
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strcpy(name, device_get_nameunit(dev));
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ahc = ahc_alloc(dev, name);
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if (ahc == NULL)
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return (ENOMEM);
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ahc_set_unit(ahc, device_get_unit(dev));
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/* Allocate a dmatag for our SCB DMA maps */
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/* XXX Should be a child of the VLB/ISA bus dma tag */
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error = aic_dma_tag_create(ahc, /*parent*/NULL, /*alignment*/1,
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/*boundary*/0,
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/*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
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/*highaddr*/BUS_SPACE_MAXADDR,
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/*filter*/NULL, /*filterarg*/NULL,
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/*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
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/*nsegments*/AHC_NSEG,
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/*maxsegsz*/AHC_MAXTRANSFER_SIZE,
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/*flags*/0,
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&ahc->parent_dmat);
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if (error != 0) {
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printf("ahc_isa_attach: Could not allocate DMA tag "
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"- error %d\n", error);
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ahc_free(ahc);
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return (ENOMEM);
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}
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ahc->dev_softc = dev;
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error = aic7770_config(ahc, entry, /*unused ioport arg*/0);
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if (error != 0) {
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ahc_free(ahc);
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return (error);
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}
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ahc_attach(ahc);
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return (0);
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}
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static device_method_t ahc_isa_device_methods[] = {
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/* Device interface */
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DEVMETHOD(device_identify, ahc_isa_identify),
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DEVMETHOD(device_probe, ahc_isa_probe),
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DEVMETHOD(device_attach, ahc_isa_attach),
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DEVMETHOD(device_detach, ahc_detach),
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{ 0, 0 }
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};
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static driver_t ahc_isa_driver = {
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"ahc",
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ahc_isa_device_methods,
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sizeof(struct ahc_softc)
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};
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DRIVER_MODULE(ahc_isa, isa, ahc_isa_driver, ahc_devclass, 0, 0);
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MODULE_DEPEND(ahc_isa, ahc, 1, 1, 1);
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MODULE_VERSION(ahc_isa, 1);
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18
sys/modules/aic7xxx/ahc/ahc_isa/Makefile
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18
sys/modules/aic7xxx/ahc/ahc_isa/Makefile
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@ -0,0 +1,18 @@
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# $FreeBSD$
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.PATH: ${.CURDIR}/../../../../dev/aic7xxx
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KMOD= ahc_isa
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../aic7xxx_reg.h:
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( cd .. ; ${MAKE} aic7xxx_reg.h )
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SRCS= ahc_isa.c ../aic7xxx_reg.h
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SRCS+= device_if.h bus_if.h pci_if.h isa_if.h
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SRCS+= opt_scsi.h opt_cam.h opt_aic7xxx.h
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CFLAGS+= -I${.CURDIR}/../../../../dev/aic7xxx -I..
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CLEANFILES= ../aic7xxx_reg.h ../aic7xxx_seq.h
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.include <bsd.kmod.mk>
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