add35ed5b8
to check the status property in their probe routines. Simplebus used to only instantiate its children whose status="okay" but that was improper behavior, fixed in r261352. Now that it doesn't check anymore and probes all its children; the children all have to do the check because really only the children know how to properly interpret their status property strings. Right now all existing drivers only understand "okay" versus something- that's-not-okay, so they all use the new ofw_bus_status_okay() helper.
241 lines
7.0 KiB
C
241 lines
7.0 KiB
C
/*-
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* Copyright (c) 2012 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Oleksandr Rybalko under sponsorship
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* from the FreeBSD Foundation.
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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. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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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
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* FOR 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/module.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/ata.h>
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#include <sys/bus.h>
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#include <sys/endian.h>
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#include <sys/malloc.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/sema.h>
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#include <sys/taskqueue.h>
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#include <vm/uma.h>
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#include <machine/stdarg.h>
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#include <machine/resource.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/ata/ata-all.h>
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#include <dev/ata/ata-pci.h>
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#include <ata_if.h>
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#include <dev/fdt/fdt_common.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <machine/fdt.h>
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/* local prototypes */
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static int imx_ata_ch_attach(device_t dev);
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static int imx_ata_setmode(device_t dev, int target, int mode);
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static int
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imx_ata_probe(device_t dev)
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{
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struct ata_pci_controller *ctrl;
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (!ofw_bus_is_compatible(dev, "fsl,imx51-ata"))
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return (ENXIO);
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ctrl = device_get_softc(dev);
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device_set_desc(dev, "Freescale Integrated PATA Controller");
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return (BUS_PROBE_DEFAULT);
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}
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static void
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imx_ata_intr(void *data)
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{
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struct ata_pci_controller *ctrl = data;
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bus_write_2(ctrl->r_res1, 0x28, bus_read_2(ctrl->r_res1, 0x28));
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ctrl->interrupt[0].function(ctrl->interrupt[0].argument);
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}
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static int
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imx_ata_attach(device_t dev)
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{
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struct ata_pci_controller *ctrl;
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device_t child;
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int unit;
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ctrl = device_get_softc(dev);
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/* do chipset specific setups only needed once */
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ctrl->legacy = ata_legacy(dev);
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ctrl->channels = 1;
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ctrl->ichannels = -1;
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ctrl->ch_attach = ata_pci_ch_attach;
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ctrl->ch_detach = ata_pci_ch_detach;
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ctrl->dev = dev;
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ctrl->r_type1 = SYS_RES_MEMORY;
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ctrl->r_rid1 = 0;
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ctrl->r_res1 = bus_alloc_resource_any(dev, ctrl->r_type1,
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&ctrl->r_rid1, RF_ACTIVE);
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if (ata_setup_interrupt(dev, imx_ata_intr)) {
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device_printf(dev, "failed to setup interrupt\n");
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return ENXIO;
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}
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ctrl->channels = 1;
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ctrl->ch_attach = imx_ata_ch_attach;
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ctrl->setmode = imx_ata_setmode;
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/* attach all channels on this controller */
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unit = 0;
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child = device_add_child(dev, "ata", ((unit == 0) && ctrl->legacy) ?
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unit : devclass_find_free_unit(ata_devclass, 2));
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if (child == NULL)
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device_printf(dev, "failed to add ata child device\n");
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else
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device_set_ivars(child, (void *)(intptr_t)unit);
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bus_generic_attach(dev);
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return 0;
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}
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static int
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imx_ata_ch_attach(device_t dev)
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{
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struct ata_pci_controller *ctrl;
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struct ata_channel *ch;
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int i;
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ctrl = device_get_softc(device_get_parent(dev));
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ch = device_get_softc(dev);
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for (i = ATA_DATA; i < ATA_MAX_RES; i++)
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ch->r_io[i].res = ctrl->r_res1;
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bus_write_2(ctrl->r_res1, 0x24, 0x80);
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DELAY(100);
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bus_write_2(ctrl->r_res1, 0x24, 0xc0);
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DELAY(100);
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/* Write TIME_OFF/ON/1/2W */
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bus_write_1(ctrl->r_res1, 0x00, 3);
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bus_write_1(ctrl->r_res1, 0x01, 3);
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bus_write_1(ctrl->r_res1, 0x02, (25 + 15) / 15);
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bus_write_1(ctrl->r_res1, 0x03, (70 + 15) / 15);
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/* Write TIME_2R/AX/RDX/4 */
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bus_write_1(ctrl->r_res1, 0x04, (70 + 15) / 15);
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bus_write_1(ctrl->r_res1, 0x05, (50 + 15) / 15 + 2);
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bus_write_1(ctrl->r_res1, 0x06, 1);
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bus_write_1(ctrl->r_res1, 0x07, (10 + 15) / 15);
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/* Write TIME_9 ; the rest of timing registers is irrelevant for PIO */
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bus_write_1(ctrl->r_res1, 0x08, (10 + 15) / 15);
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bus_write_2(ctrl->r_res1, 0x24, 0xc1);
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DELAY(30000);
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/* setup ATA registers */
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ch->r_io[ATA_DATA ].offset = 0xa0;
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ch->r_io[ATA_FEATURE].offset = 0xa4;
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ch->r_io[ATA_ERROR ].offset = 0xa4;
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ch->r_io[ATA_COUNT ].offset = 0xa8;
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ch->r_io[ATA_SECTOR ].offset = 0xac;
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ch->r_io[ATA_CYL_LSB].offset = 0xb0;
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ch->r_io[ATA_CYL_MSB].offset = 0xb4;
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ch->r_io[ATA_DRIVE ].offset = 0xb8;
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ch->r_io[ATA_COMMAND].offset = 0xbc;
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ch->r_io[ATA_STATUS ].offset = 0xbc;
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ch->r_io[ATA_ALTSTAT].offset = 0xd8;
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ch->r_io[ATA_CONTROL].offset = 0xd8;
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ata_pci_hw(dev);
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ch->flags |= ATA_NO_SLAVE;
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ch->flags |= ATA_USE_16BIT;
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ch->flags |= ATA_CHECKS_CABLE;
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ch->flags |= ATA_KNOWN_PRESENCE;
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/* Clear pending interrupts. */
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bus_write_2(ctrl->r_res1, 0x28, 0xf8);
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/* Enable all, but Idle interrupts. */
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bus_write_2(ctrl->r_res1, 0x2c, 0x88);
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return 0;
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}
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static int
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imx_ata_setmode(device_t dev, int target, int mode)
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{
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return (min(mode, ATA_PIO4));
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}
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static device_method_t imx_ata_methods[] = {
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DEVMETHOD(device_probe, imx_ata_probe),
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DEVMETHOD(device_attach, imx_ata_attach),
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DEVMETHOD(device_detach, ata_pci_detach),
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DEVMETHOD(device_suspend, ata_pci_suspend),
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DEVMETHOD(device_resume, ata_pci_resume),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD(bus_read_ivar, ata_pci_read_ivar),
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DEVMETHOD(bus_write_ivar, ata_pci_write_ivar),
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DEVMETHOD(bus_alloc_resource, ata_pci_alloc_resource),
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DEVMETHOD(bus_release_resource, ata_pci_release_resource),
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DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
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DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
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DEVMETHOD(bus_setup_intr, ata_pci_setup_intr),
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DEVMETHOD(bus_teardown_intr, ata_pci_teardown_intr),
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DEVMETHOD(pci_read_config, ata_pci_read_config),
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DEVMETHOD(pci_write_config, ata_pci_write_config),
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DEVMETHOD(bus_print_child, ata_pci_print_child),
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DEVMETHOD(bus_child_location_str, ata_pci_child_location_str),
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DEVMETHOD_END
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};
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static driver_t imx_ata_driver = {
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"atapci",
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imx_ata_methods,
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sizeof(struct ata_pci_controller)
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};
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DRIVER_MODULE(imx_ata, simplebus, imx_ata_driver, ata_pci_devclass, NULL,
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NULL);
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MODULE_VERSION(imx_ata, 1);
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MODULE_DEPEND(imx_ata, ata, 1, 1, 1);
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MODULE_DEPEND(imx_ata, atapci, 1, 1, 1);
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