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 /* local prototypes */ 28 static int ata_cypress_chipinit(device_t dev); 29 static void ata_cypress_setmode(device_t dev, int mode); 30 31 /* 32 * Cypress chipset support functions 33 */ 34 int 35 ata_cypress_ident(device_t dev) 36 { 37 struct ata_pci_controller *ctlr = device_get_softc(dev); 38 39 /* 40 * the Cypress chip is a mess, it contains two ATA functions, but 41 * both channels are visible on the first one. 42 * simply ignore the second function for now, as the right 43 * solution (ignoring the second channel on the first function) 44 * doesn't work with the crappy ATA interrupt setup on the alpha. 45 */ 46 if (pci_get_devid(dev) == ATA_CYPRESS_82C693 && 47 pci_get_function(dev) == 1 && 48 pci_get_subclass(dev) == PCIS_STORAGE_IDE) { 49 device_set_desc(dev, "Cypress 82C693 ATA controller"); 50 ctlr->chipinit = ata_cypress_chipinit; 51 return 0; 52 } 53 return ENXIO; 54 } 55 56 static int 57 ata_cypress_chipinit(device_t dev) 58 { 59 struct ata_pci_controller *ctlr = device_get_softc(dev); 60 61 if (ata_setup_interrupt(dev, ata_generic_intr)) 62 return ENXIO; 63 64 ctlr->setmode = ata_cypress_setmode; 65 return 0; 66 } 67 68 static void 69 ata_cypress_setmode(device_t dev, int mode) 70 { 71 device_t gparent = GRANDPARENT(dev); 72 struct ata_channel *ch = device_get_softc(device_get_parent(dev)); 73 struct ata_device *atadev = device_get_softc(dev); 74 int error; 75 76 mode = ata_limit_mode(dev, mode, ATA_WDMA2); 77 78 /* XXX SOS missing WDMA0+1 + PIO modes */ 79 if (mode == ATA_WDMA2) { 80 error = ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_SETXFER, 0, mode); 81 if (bootverbose) 82 device_printf(dev, "%ssetting WDMA2 on Cypress chip\n", 83 error ? "FAILURE " : ""); 84 if (!error) { 85 pci_write_config(gparent, ch->unit ? 0x4e : 0x4c, 0x2020, 2); 86 atadev->mode = mode; 87 return; 88 } 89 } 90 /* we could set PIO mode timings, but we assume the BIOS did that */ 91 } 92