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.ata_dma_check_80pin
89 set to 0 to disable the 80pin cable check (default is 1, check the cable)
90 .It Va hw.ata.atapi_dma
91 set to 1 for DMA access, 0 for PIO (default is DMA).
93 set to 1 to enable Write Caching, 0 to disable (default is enabled).
95 can cause data loss on power failures and crashes.
100 driver provides access to ATA (IDE) and SerialATA disk drives,
101 ATAPI CDROM/DVD drives, ZIP/LS120 ATAPI drives and ATAPI tape drives
102 connected to controllers according to the ATA/ATAPI standards.
104 The currently supported ATA/SATA controller chips are:
106 .Bl -tag -width "Silicon Image:" -compact
108 ATP850P, ATP860A, ATP860R, ATP865A, ATP865R.
110 M5229, M5281, M5287, M5288, M5289.
112 AMD756, AMD766, AMD768, AMD8111, CS5536.
114 IXP200, IXP300, IXP400.
116 CMD646, CMD646U2, CMD648, CMD649.
122 HPT302, HPT366, HPT368, HPT370, HPT371, HPT372, HPT372N, HPT374.
124 6300ESB, 31244, PIIX, PIIX3, PIIX4, ESB2, ICH, ICH0, ICH2, ICH3, ICH4, ICH5, ICH6, ICH7, ICH8, ICH9.
128 JMB360, JMB361, JMB363, JMB365, JMB366, JMB368.
130 88SX5040, 88SX5041, 88SX5080, 88SX5081, 88SX6041, 88SX6081, 88SX6101, 88SX6141.
136 nForce, nForce2, nForce2 MCP, nForce3, nForce3 MCP, nForce3 Pro, nForce4.
138 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.
140 HT1000, ROSB4, CSB5, CSB6, K2, Frodo4, Frodo8.
142 SiI0680, SiI3112, SiI3114, SiI3124, SiI3132, SiI3512.
144 SIS180, SIS181, SIS182, SIS5513, SIS530, SIS540, SIS550, SIS620, SIS630, SIS630S, SIS633, SIS635, SIS730, SIS733, SIS735, SIS745, SIS961, SIS962, SIS963, SIS964, SIS965.
146 VT6410, VT6420, VT6421, VT82C586, VT82C586B, VT82C596, VT82C596B, VT82C686, VT82C686A, VT82C686B, VT8231, VT8233, VT8233A, VT8233C, VT8235, VT8237, VT8237A, VT8237S, VT8251.
149 Unknown ATA chipsets are supported in PIO modes, and if the standard
150 busmaster DMA registers are present and contain valid setup, DMA is
151 also enabled, although the max mode is limited to UDMA33, as it is
152 not known what the chipset can do and how to program it.
156 driver can change the transfer mode and various other parameters
157 when the system is up and running.
163 driver sets the maximum transfer mode supported by the hardware as default.
166 driver sometimes warns:
167 .Dq Sy "DMA limited to UDMA33, non-ATA66 cable or device".
171 driver has detected that the required 80 conductor cable is not present
172 or could not be detected properly,
173 or that one of the devices on the channel only accepts up
175 .Va hw.ata.ata_dma_check_80pin
176 tunable can be set to 0 to disable this check.
178 Unknown ATAPI devices are initialized to DMA mode if the
180 tunable is set to 1 and they support at least UDMA33 transfers.
181 Otherwise they are set to PIO mode because severe DMA problems are
182 common even if the device capabilities indicate support.
183 You can always try to set DMA mode on an ATAPI device using
185 but be aware that your hardware might
187 support it and can potentially
189 the entire system causing data loss.
191 .Bl -tag -width ".Pa /sys/i386/conf/GENERIC" -compact
193 ATA disk device nodes
195 ATA RAID device nodes
197 ATAPI CD-ROM device nodes
199 ATAPI floppy drive device nodes
201 ATAPI tape drive device nodes
202 .It Pa /sys/i386/conf/GENERIC
203 sample generic kernel config file for
208 Please remember that in order to use UDMA4/ATA66 and above modes you
210 use 80 conductor cables.
211 Please assure that ribbon cables are no longer than 45cm.
212 In case of rounded ATA cables, the length depends on the
213 quality of the cables.
214 SATA cables can be up to 1m long according to the specification.
216 Static device numbering
220 reserves a number for each possibly connected disk,
221 even when not present.
222 This is useful in hotswap scenarios
223 where disks should always show up as the same numbered device,
224 and not depend on attach order.
226 Native Command Queuing (NCQ) on SATA drives is not yet supported.
234 driver first appeared in
238 .Aq sos@FreeBSD.org .