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author | gibbs <gibbs@FreeBSD.org> | 2004-08-17 02:32:30 +0000 |
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committer | gibbs <gibbs@FreeBSD.org> | 2004-08-17 02:32:30 +0000 |
commit | 81bd8852a4ce3d7b3b7fe609dfe13b833fb57d96 (patch) | |
tree | 643a1082eaf1b3356ea98e8dbd4b7862dd2cbdfe /sys/dev/aic7xxx | |
parent | 5c67ec4668e0f194d323b210e1b6302bd2b996ce (diff) | |
download | FreeBSD-src-81bd8852a4ce3d7b3b7fe609dfe13b833fb57d96.zip FreeBSD-src-81bd8852a4ce3d7b3b7fe609dfe13b833fb57d96.tar.gz |
Add ISA attachement files for the aic7xxx driver.
Approved by: re
Reminded by: obrien
Diffstat (limited to 'sys/dev/aic7xxx')
-rw-r--r-- | sys/dev/aic7xxx/ahc_isa.c | 299 |
1 files changed, 299 insertions, 0 deletions
diff --git a/sys/dev/aic7xxx/ahc_isa.c b/sys/dev/aic7xxx/ahc_isa.c new file mode 100644 index 0000000..48138ba --- /dev/null +++ b/sys/dev/aic7xxx/ahc_isa.c @@ -0,0 +1,299 @@ +/* + * FreeBSD, VLB/ISA product support functions + * + * Copyright (c) 2004 Justin T. Gibbs. + * 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, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES. + * + * $Id$ + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <dev/aic7xxx/aic7xxx_osm.h> + +#include <sys/limits.h> /* For CHAR_BIT*/ +#include <dev/eisa/eisaconf.h> /* For EISA constants */ +#include <isa/isavar.h> /* For ISA attach glue */ + + +static struct aic7770_identity *ahc_isa_find_device(bus_space_tag_t tag, + bus_space_handle_t bsh); +static void ahc_isa_identify(driver_t *driver, + device_t parent); +static int ahc_isa_probe(device_t dev); +static int ahc_isa_attach(device_t dev); + +/* + * Perform an EISA probe of the address with the addition + * of a "priming" step. The 284X requires priming (a write + * to offset 0x80, the first EISA ID register) to ensure it + * is not mistaken as an EISA card. Once we have the ID, + * lookup the controller in the aic7770 table of supported + * devices. + */ +static struct aic7770_identity * +ahc_isa_find_device(bus_space_tag_t tag, bus_space_handle_t bsh) { + eisa_id_t id; + u_int id_size; + int i; + + id = 0; + id_size = sizeof(id); + for (i = 0; i < id_size; i++) { + bus_space_write_1(tag, bsh, 0x80, 0x80 + i); + id |= bus_space_read_1(tag, bsh, 0x80 + i) + << ((id_size - i - 1) * CHAR_BIT); + } + + return (aic7770_find_device(id)); +} + +static void +ahc_isa_identify(driver_t *driver, device_t parent) +{ + int slot; + int max_slot; + + max_slot = 14; + for (slot = 0; slot <= max_slot; slot++) { + struct aic7770_identity *entry; + bus_space_tag_t tag; + bus_space_handle_t bsh; + struct resource *regs; + uint32_t iobase; + int rid; + + rid = 0; + iobase = (slot * EISA_SLOT_SIZE) + AHC_EISA_SLOT_OFFSET; + regs = bus_alloc_resource(parent, SYS_RES_IOPORT, &rid, + iobase, iobase, AHC_EISA_IOSIZE, + RF_ACTIVE); + if (regs == NULL) { + if (bootverbose) + printf("ahc_isa_probe %d: ioport 0x%x " + "alloc failed\n", slot, iobase); + continue; + } + + tag = rman_get_bustag(regs); + bsh = rman_get_bushandle(regs); + + entry = ahc_isa_find_device(tag, bsh); + if (entry != NULL) { + device_t child; + + child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, + "ahc", -1); + if (child != NULL) { + device_set_driver(child, driver); + bus_set_resource(child, SYS_RES_IOPORT, + 0, iobase, AHC_EISA_IOSIZE); + } + } + bus_release_resource(parent, SYS_RES_IOPORT, rid, regs); + } +} + +static int +ahc_isa_probe(device_t dev) +{ + struct aic7770_identity *entry; + bus_space_tag_t tag; + bus_space_handle_t bsh; + struct resource *regs; + struct resource *irq; + uint32_t iobase; + u_int intdef; + u_int hcntrl; + int irq_num; + int error; + int zero; + + iobase = isa_get_port(dev); + error = ENODEV; + zero = 0; + regs = NULL; + irq = NULL; + + regs = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &zero, RF_ACTIVE); + if (regs == NULL) { + device_printf(dev, "ioport 0x%x alloc failed\n", iobase); + return (ENOMEM); + } + + tag = rman_get_bustag(regs); + bsh = rman_get_bushandle(regs); + + entry = ahc_isa_find_device(tag, bsh); + if (entry == NULL) + goto cleanup; + + /* Pause the card preseving the IRQ type */ + hcntrl = bus_space_read_1(tag, bsh, HCNTRL) & IRQMS; + bus_space_write_1(tag, bsh, HCNTRL, hcntrl | PAUSE); + while ((bus_space_read_1(tag, bsh, HCNTRL) & PAUSE) == 0) + ; + + /* Make sure we have a valid interrupt vector */ + intdef = bus_space_read_1(tag, bsh, INTDEF); + irq_num = intdef & VECTOR; + switch (irq_num) { + case 9: + case 10: + case 11: + case 12: + case 14: + case 15: + break; + default: + device_printf(dev, "@0x%x: illegal irq setting %d\n", + iobase, irq_num); + goto cleanup; + } + + if (bus_set_resource(dev, SYS_RES_IRQ, zero, irq_num, 1) != 0) + goto cleanup; + + /* + * The 284X only supports edge triggered interrupts, + * so do not claim RF_SHAREABLE. + */ + irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero, + 0 /*!(RF_ACTIVE|RF_SHAREABLE)*/); + if (irq != NULL) { + error = 0; + device_set_desc(dev, entry->name); + } else + device_printf(dev, "@0x%x: irq %d allocation failed\n", + iobase, irq_num); + +cleanup: + if (regs != NULL) { + bus_release_resource(dev, SYS_RES_IOPORT, zero, regs); + regs = NULL; + } + + if (irq != NULL) { + bus_release_resource(dev, SYS_RES_IRQ, zero, irq); + irq = NULL; + } + + return (error); +} + +static int +ahc_isa_attach(device_t dev) +{ + struct aic7770_identity *entry; + bus_space_tag_t tag; + bus_space_handle_t bsh; + struct resource *regs; + struct ahc_softc *ahc; + char *name; + int zero; + int error; + + zero = 0; + regs = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &zero, RF_ACTIVE); + if (regs == NULL) + return (ENOMEM); + + tag = rman_get_bustag(regs); + bsh = rman_get_bushandle(regs); + entry = ahc_isa_find_device(tag, bsh); + bus_release_resource(dev, SYS_RES_IOPORT, zero, regs); + if (entry == NULL) + return (ENODEV); + + /* + * Allocate a softc for this card and + * set it up for attachment by our + * common detect routine. + */ + name = malloc(strlen(device_get_nameunit(dev)) + 1, M_DEVBUF, M_NOWAIT); + if (name == NULL) + return (ENOMEM); + strcpy(name, device_get_nameunit(dev)); + ahc = ahc_alloc(dev, name); + if (ahc == NULL) + return (ENOMEM); + + ahc_set_unit(ahc, device_get_unit(dev)); + + /* Allocate a dmatag for our SCB DMA maps */ + /* XXX Should be a child of the VLB/ISA bus dma tag */ + error = aic_dma_tag_create(ahc, /*parent*/NULL, /*alignment*/1, + /*boundary*/0, + /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, + /*highaddr*/BUS_SPACE_MAXADDR, + /*filter*/NULL, /*filterarg*/NULL, + /*maxsize*/BUS_SPACE_MAXSIZE_32BIT, + /*nsegments*/AHC_NSEG, + /*maxsegsz*/AHC_MAXTRANSFER_SIZE, + /*flags*/0, + &ahc->parent_dmat); + + if (error != 0) { + printf("ahc_isa_attach: Could not allocate DMA tag " + "- error %d\n", error); + ahc_free(ahc); + return (ENOMEM); + } + ahc->dev_softc = dev; + error = aic7770_config(ahc, entry, /*unused ioport arg*/0); + if (error != 0) { + ahc_free(ahc); + return (error); + } + + ahc_attach(ahc); + return (0); +} + +static device_method_t ahc_isa_device_methods[] = { + /* Device interface */ + DEVMETHOD(device_identify, ahc_isa_identify), + DEVMETHOD(device_probe, ahc_isa_probe), + DEVMETHOD(device_attach, ahc_isa_attach), + DEVMETHOD(device_detach, ahc_detach), + { 0, 0 } +}; + +static driver_t ahc_isa_driver = { + "ahc", + ahc_isa_device_methods, + sizeof(struct ahc_softc) +}; + +DRIVER_MODULE(ahc_isa, isa, ahc_isa_driver, ahc_devclass, 0, 0); +MODULE_DEPEND(ahc_isa, ahc, 1, 1, 1); +MODULE_VERSION(ahc_isa, 1); |