1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 1998 - 2008 Søren Schmidt <sos@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer, 12 * without modification, immediately at the beginning of the file. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 #include <sys/param.h> 31 #include <sys/module.h> 32 #include <sys/systm.h> 33 #include <sys/kernel.h> 34 #include <sys/ata.h> 35 #include <sys/bus.h> 36 #include <sys/endian.h> 37 #include <sys/malloc.h> 38 #include <sys/lock.h> 39 #include <sys/mutex.h> 40 #include <sys/sema.h> 41 #include <sys/taskqueue.h> 42 #include <vm/uma.h> 43 #include <machine/stdarg.h> 44 #include <machine/resource.h> 45 #include <machine/bus.h> 46 #include <sys/rman.h> 47 #include <dev/pci/pcivar.h> 48 #include <dev/pci/pcireg.h> 49 #include <dev/ata/ata-all.h> 50 #include <dev/ata/ata-pci.h> 51 #include <ata_if.h> 52 53 /* local prototypes */ 54 static int ata_cypress_chipinit(device_t dev); 55 static int ata_cypress_setmode(device_t dev, int target, int mode); 56 57 /* 58 * Cypress chipset support functions 59 */ 60 static int 61 ata_cypress_probe(device_t dev) 62 { 63 struct ata_pci_controller *ctlr = device_get_softc(dev); 64 65 /* 66 * the Cypress chip is a mess, it contains two ATA functions, but 67 * both channels are visible on the first one. 68 * simply ignore the second function for now, as the right 69 * solution (ignoring the second channel on the first function) 70 * doesn't work with the crappy ATA interrupt setup on the alpha. 71 */ 72 if (pci_get_devid(dev) == ATA_CYPRESS_82C693 && 73 pci_get_function(dev) == 1 && 74 pci_get_subclass(dev) == PCIS_STORAGE_IDE) { 75 device_set_desc(dev, "Cypress 82C693 ATA controller"); 76 ctlr->chipinit = ata_cypress_chipinit; 77 return (BUS_PROBE_LOW_PRIORITY); 78 } 79 return ENXIO; 80 } 81 82 static int 83 ata_cypress_chipinit(device_t dev) 84 { 85 struct ata_pci_controller *ctlr = device_get_softc(dev); 86 87 if (ata_setup_interrupt(dev, ata_generic_intr)) 88 return ENXIO; 89 90 ctlr->setmode = ata_cypress_setmode; 91 return 0; 92 } 93 94 static int 95 ata_cypress_setmode(device_t dev, int target, int mode) 96 { 97 device_t parent = device_get_parent(dev); 98 struct ata_channel *ch = device_get_softc(dev); 99 100 mode = min(mode, ATA_WDMA2); 101 102 /* XXX SOS missing WDMA0+1 + PIO modes */ 103 if (mode == ATA_WDMA2) { 104 pci_write_config(parent, ch->unit ? 0x4e : 0x4c, 0x2020, 2); 105 } 106 /* we could set PIO mode timings, but we assume the BIOS did that */ 107 return (mode); 108 } 109 110 ATA_DECLARE_DRIVER(ata_cypress); 111