2 .\" Copyright (c) 2001 M. Warner Losh
3 .\" All rights reserved.
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25 .\" $FreeBSD: src/share/man/man4/pcic.4,v 1.2.2.2 2001/12/17 11:30:12 ru Exp $
32 .Nd pccard bridge driver
39 driver controls the pccard subsystem.
44 devices attached to either
51 driver does not support the so-called TCIC controllers made by
53 Nor does it support the MECIA chipset found in some early PC98
55 The mecia driver now supports that bridge.
59 devices, or true clones, are supported in the current code.
61 .Bl -tag -width "Intel i82365SL Step A" -compact
62 .It Intel i82365SL Step A
63 .It Intel i82365SL Step B
64 .It Intel i82365SL Step C
66 original 16-bit pccard controller.
69 last version of this device.
70 3.3V support was added.
72 An older VLSI part with some issues on some machines.
73 .It Cirrus Logic PD-6710
74 .It Cirrus Logic PD-6720
75 .It Cirrus Logic PD-6722
76 Cirrus Logic's pcic controller.
77 Compatible with the i82365SL Step C with the addition of a different
81 Ricoh's pccard bridge chips.
82 These are compatible with the i82365SL Step C, but with yet another
83 different 3.3V control.
86 Compatible with i82365SL Step C.
89 Like the earlier Vadem models, but with Vadem's own, incompatible, 3.3V
93 clone of the original i82365SL part, with its own ID register value.
96 A strange clone of i82365SL.
97 This part has many restrictions not found in the i82365SL, plus some
98 strange power control.
99 It has not been tested in ages, but is believed to work.
100 Its use is believed to be confined to model of ISA card, available
104 Many other vendors made parts in this arena, but most of them were
105 compatible with one of the above chipsets.
107 The following PCI cardbus and pcmcia bridges are supported:
109 .Bl -tag -width "Intel i82365SL Step A" -compact
110 .It Cirrus Logic PD6729
111 .It Cirrus Logic PD6730
112 These two might be broken at the moment.
113 .It Cirrus Logic PD6832
114 .It Cirrus Logic PD6833
124 O2 Micro chips may be poorly supported because the author does not
125 have good access to machines with one of these bridges in it.
153 .Bl -tag -width ".Pa /dev/card0" -compact
155 Character device for the
159 .Sh MODES OF OPERATION
160 The ISA device supports routing ISA interrupts only.
161 You cannot share ISA interrupts.
162 Every interrupt must be unique.
164 The PCI device supports routing ISA or PCI interrupts.
165 PCI interrupts are sharable.
166 ISA interrupts are not sharable.
167 PCI interrupts should be used unless your machine has a specific problem using
170 PCI interrupt routing is the default for PCI devices.
171 Some older laptops require ISA interrupt routing to work properly.
172 To enable ISA interrupt routing, you must set the tunable
173 .Li hw.pcic.intr_path=1
175 .Pa /boot/loader.conf .
176 For the present, unless you have a one slot machine, you should set
178 to force polling mode.
179 Two slot machines have minor issues with using an ISA interrupt for the
182 .Bl -tag -width indent
183 .It Va hw.pcic.ignore_function_1
184 Needed for some, improperly manufactured PCI cards made by Orinoco.
185 It disables function 1 completely.
186 Set to 0 to enable function 1.
187 Set to 1 to disable function 1.
188 This tunable generally should not be needed on laptops.
190 .It Va hw.pcic.init_routing
191 Some machines can tolerate interrupt routing selection at the cardbus
193 Others fail when you mess with these registers.
194 Set to 1 to force the chipset to route via parallel PCI interrupts (as
195 well as a few other little things).
196 Setting to 0, the default, forces the code to leave these registers as the
198 Most laptops will not need to set this tunable.
199 Many PCI cards with cardbus chips on them are believed to need this
202 .It Va hw.pcic.intr_path
203 Should PCI pcic devices route interrupts via ISA or PCI.
204 A value of 1 means route via ISA.
205 A value of 2 means route via PCI.
206 This is ignored for the ISA device.
207 Many older laptops do not have PCI BIOS implementations that
209 can use to route interrupts properly.
210 These laptops may need to set this to 1 and
216 Overrides the IRQ to use for ISA interrupt routing of the CSC or
217 management interrupt.
218 If you are using the ISA device, you can set this tunable, or use the
220 clause in config file.
221 If you are using a PCI device in ISA interrupt mode (see
222 .Va hw.pcic.intr_path ) ,
223 then you must set the interrupt with this
224 sysctl, or polling mode will be used.
225 Due to limitations in the tunable system, only one interrupt can be selected
227 Systems with multiple PCI bridges that need to use ISA routing are encouraged
228 to use polling mode on each of the cards.
232 Too long to detail in the man page.
235 Some are the fault of the standard.
236 Some are the fault of bad standard compliance.
237 Some are Warner's fault.