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committed a8cf59a6692 dev_alert(&pdev->dev, "inic162x support is broken with common data corruption issues and will be disabled by default, contact linux-ide@vger.kernel.org if in production use\n");/* * sata_inic162x.c - Driver for Initio 162x SATA controllers * * Copyright 2006 SUSE Linux Products GmbH * Copyright 2006 Tejun Heo <teheo@novell.com> * * This file is released under GPL v2. * * **** WARNING **** * * This driver never worked properly and unfortunately data corruption is * relatively common. There isn't anyone working on the driver and there's * no support from the vendor. Do not use this driver in any production * environment. * * http://thread.gmane.org/gmane.linux.debian.devel.bugs.rc/378525/focus=54491 * https://bugzilla.kernel.org/show_bug.cgi?id=60565 * * ***************** * * This controller is eccentric and easily locks up if something isn't * right. Documentation is available at initio's website but it only * documents registers (not programming model). * * This driver has interesting history. The first version was written * from the documentation and a 2.4 IDE driver posted on a Taiwan * company, which didn't use any IDMA features and couldn't handle * LBA48. The resulting driver couldn't handle LBA48 devices either * making it pretty useless. * * After a while, initio picked the driver up, renamed it to * sata_initio162x, updated it to use IDMA for ATA DMA commands and * posted it on their website. It only used ATA_PROT_DMA for IDMA and * attaching both devices and issuing IDMA and !IDMA commands * simultaneously broke it due to PIRQ masking interaction but it did * show how to use the IDMA (ADMA + some initio specific twists) * engine. * * Then, I picked up their changes again and here's the usable driver * which uses IDMA for everything. Everything works now including * LBA48, CD/DVD burning, suspend/resume and hotplug. There are some * issues tho. Result Tf is not resported properly, NCQ isn't * supported yet and CD/DVD writing works with DMA assisted PIO * protocol (which, for native SATA devices, shouldn't cause any * noticeable difference). * * Anyways, so, here's finally a working driver for inic162x. Enjoy! * * initio: If you guys wanna improve the driver regarding result TF * access and other stuff, please feel free to contact me. I'll be * happy to assist. */enum { MMIO_BAR_PCI = 5, MMIO_BAR_CARDBUS = 1, NR_PORTS = 2, IDMA_CPB_TBL_SIZE = 4 * 32, INIC_DMA_BOUNDARY = 0xffffff, HOST_ACTRL = 0x08, HOST_CTL = 0x7c, HOST_STAT = 0x7e, HOST_IRQ_STAT = 0xbc, HOST_IRQ_MASK = 0xbe, PORT_SIZE = 0x40, /* registers for ATA TF operation */ PORT_TF_DATA = 0x00, PORT_TF_FEATURE = 0x01, PORT_TF_NSECT = 0x02, PORT_TF_LBAL = 0x03, PORT_TF_LBAM = 0x04, PORT_TF_LBAH = 0x05, PORT_TF_DEVICE = 0x06, PORT_TF_COMMAND = 0x07,