2 .\" Copyright (c) 2003 Søren Schmidt <sos@FreeBSD.org>
3 .\" All rights reserved.
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40 .Nd generic ATA/ATAPI disk controller driver
42 For ISA based ATA/ATAPI support:
47 .Pa /boot/device.hints :
48 .Cd hint.ata.0.at="isa"
49 .Cd hint.ata.0.port="0x1f0"
50 .Cd hint.ata.0.irq="14"
51 .Cd hint.ata.1.at="isa"
52 .Cd hint.ata.1.port="0x170"
53 .Cd hint.ata.1.irq="15"
55 For PC98 based ATA/ATAPI support:
60 .Pa /boot/device.hints :
61 .Cd hint.atacbus.0.at="isa"
62 .Cd hint.atacbus.0.port="0x640"
63 .Cd hint.atacbus.0.irq="9"
65 For PCI based ATA/ATAPI support:
69 To support ATA compliant disk drives:
72 To support ATA software RAID's:
75 To support ATAPI CDROM, DVD and CD/DVD burner drives:
78 To support ATAPI floppy drives:
81 To support ATAPI tape drives:
84 The following tunables are settable from the loader:
87 set to 1 for DMA access, 0 for PIO (default is DMA).
88 .It Va hw.ata.atapi_dma
89 set to 1 for DMA access, 0 for PIO (default is DMA).
91 set to 1 to enable Write Caching, 0 to disable (default is enabled).
93 can cause data loss on power failures and crashes.
98 driver provides access to ATA (IDE) and SerialATA disk drives,
99 ATAPI CDROM/DVD drives, ZIP/LS120 ATAPI drives and ATAPI tape drives
100 connected to controllers according to the ATA/ATAPI standards.
102 The currently supported ATA/SATA controller chips are:
104 .Bl -tag -width "Silicon Image:" -compact
106 ATP850P, ATP860A, ATP860R, ATP865A, ATP865R.
108 M5229, M5281, M5287, M5288, M5289.
110 AMD756, AMD766, AMD768, AMD8111.
112 IXP200, IXP300, IXP400.
114 CMD646, CMD646U2, CMD648, CMD649.
120 HPT302, HPT366, HPT368, HPT370, HPT371, HPT372, HPT372N, HPT374.
122 6300ESB, 31244, PIIX, PIIX3, PIIX4, ESB2, ICH, ICH0, ICH2, ICH3, ICH4, ICH5, ICH6, ICH7, ICH8.
126 JMB360, JMB361, JMB363, JMB365, JMB366, JMB368.
128 88SX5040, 88SX5041, 88SX5080, 88SX5081, 88SX6041, 88SX6081, 88SX6101, 88SX6141.
134 nForce, nForce2, nForce2 MCP, nForce3, nForce3 MCP, nForce3 Pro, nForce4.
136 PDC20246, PDC20262, PDC20263, PDC20265, PDC20267, PDC20268, PDC20269, PDC20270, PDC20271, PDC20275, PDC20276, PDC20277, PDC20318, PDC20319, PDC20371, PDC20375, PDC20376, PDC20377, PDC20378, PDC20379, PDC20571, PDC20575, PDC20579, PDC20580, PDC20617, PDC20618, PDC20619, PDC20620, PDC20621, PDC20622, PDC40518, PDC40519, PDC40718, PDC40719.
138 HT1000, ROSB4, CSB5, CSB6, K2, Frodo4, Frodo8.
140 SiI0680, SiI3112, SiI3114, SiI3124, SiI3132, SiI3512.
142 SIS180, SIS181, SIS182, SIS5513, SIS530, SIS540, SIS550, SIS620, SIS630, SIS630S, SIS633, SIS635, SIS730, SIS733, SIS735, SIS745, SIS961, SIS962, SIS963, SIS964, SIS965.
144 VT6410, VT6420, VT6421, VT82C586, VT82C586B, VT82C596, VT82C596B, VT82C686, VT82C686A, VT82C686B, VT8231, VT8233, VT8233A, VT8233C, VT8235, VT8237, VT8237A, VT8251.
147 Unknown ATA chipsets are supported in PIO modes, and if the standard
148 busmaster DMA registers are present and contain valid setup, DMA is
149 also enabled, although the max mode is limited to UDMA33, as it is
150 not known what the chipset can do and how to program it.
154 driver can change the transfer mode and various other parameters
155 when the system is up and running.
161 driver sets the maximum transfer mode supported by the hardware as default.
164 driver sometimes warns:
165 .Dq Sy "DMA limited to UDMA33, non-ATA66 cable or device".
169 driver has detected that the required 80 conductor cable is not present
170 or could not be detected properly,
171 or that one of the devices on the channel only accepts up
174 Unknown ATAPI devices are initialized to DMA mode if the
176 tunable is set to 1 and they support at least UDMA33 transfers.
177 Otherwise they are set to PIO mode because severe DMA problems are
178 common even if the device capabilities indicate support.
179 You can always try to set DMA mode on an ATAPI device using
181 but be aware that your hardware might
183 support it and can potentially
185 the entire system causing data loss.
187 .Bl -tag -width ".Pa /sys/i386/conf/GENERIC" -compact
189 ATA disk device nodes
191 ATA RAID device nodes
193 ATAPI CD-ROM device nodes
195 ATAPI floppy drive device nodes
197 ATAPI tape drive device nodes
198 .It Pa /sys/i386/conf/GENERIC
199 sample generic kernel config file for
204 Please remember that in order to use UDMA4/ATA66 and above modes you
206 use 80 conductor cables.
207 Please assure that ribbon cables are no longer than 45cm.
208 In case of rounded ATA cables, the length depends on the
209 quality of the cables.
210 SATA cables can be up to 1m long according to the specification.
212 Static device numbering
216 reserves a number for each possibly connected disk,
217 even when not present.
218 This is useful in hotswap scenarios
219 where disks should always show up as the same numbered device,
220 and not depend on attach order.
222 Native Command Queuing (NCQ) on SATA drives is not yet supported.
230 driver first appeared in
234 .Aq sos@FreeBSD.org .