1 /*- 2 * Copyright (c) 1998 - 2008 Søren Schmidt <sos@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification, immediately at the beginning of the file. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 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 /* 59 * Cypress chipset support functions 60 */ 61 static int 62 ata_cypress_probe(device_t dev) 63 { 64 struct ata_pci_controller *ctlr = device_get_softc(dev); 65 66 /* 67 * the Cypress chip is a mess, it contains two ATA functions, but 68 * both channels are visible on the first one. 69 * simply ignore the second function for now, as the right 70 * solution (ignoring the second channel on the first function) 71 * doesn't work with the crappy ATA interrupt setup on the alpha. 72 */ 73 if (pci_get_devid(dev) == ATA_CYPRESS_82C693 && 74 pci_get_function(dev) == 1 && 75 pci_get_subclass(dev) == PCIS_STORAGE_IDE) { 76 device_set_desc(dev, "Cypress 82C693 ATA controller"); 77 ctlr->chipinit = ata_cypress_chipinit; 78 return (BUS_PROBE_LOW_PRIORITY); 79 } 80 return ENXIO; 81 } 82 83 static int 84 ata_cypress_chipinit(device_t dev) 85 { 86 struct ata_pci_controller *ctlr = device_get_softc(dev); 87 88 if (ata_setup_interrupt(dev, ata_generic_intr)) 89 return ENXIO; 90 91 ctlr->setmode = ata_cypress_setmode; 92 return 0; 93 } 94 95 static int 96 ata_cypress_setmode(device_t dev, int target, int mode) 97 { 98 device_t parent = device_get_parent(dev); 99 struct ata_channel *ch = device_get_softc(dev); 100 101 mode = min(mode, ATA_WDMA2); 102 103 /* XXX SOS missing WDMA0+1 + PIO modes */ 104 if (mode == ATA_WDMA2) { 105 pci_write_config(parent, ch->unit ? 0x4e : 0x4c, 0x2020, 2); 106 } 107 /* we could set PIO mode timings, but we assume the BIOS did that */ 108 return (mode); 109 } 110 111 ATA_DECLARE_DRIVER(ata_cypress); 112