stl, stli -- drivers for Stallion Technologies multiport serial controllers
stl0 at isa? port <addr> tty irq <irq>
stli0 at isa? port <io-addr> tty iomem <mem-addr> iosiz <size> flags
<type>
stli0 at eisa? port <io-addr> tty iomem <mem-addr> iosiz <size> flags
<type>
This is a kernel driver for Stallion Technologies multiport serial
boards. There are two drivers, each supporting a different class of
boards. The stl driver supports the EasyIO and EasyConnection 8/32
boards, while the stli driver supports all other types, including
ONboard, Brumby and EasyConnection 8/64.
Each board installed in the system needs a configuration entry in the
kernel configuration file. Slightly different options and parameters are
required for each of the different board types. Depending on the type of
board one of the stl or stli drivers will be used. The stl and stli
drivers can support up to 8 boards.
Configuration of the hardware - DIP switches, jumpers, etc - varies from
board to board. Consult documentation supplied with the board for hardware
configuration details. Alternatively the board documentation is
available on Stallion Technologies WWW site at http://www.stallion.com.
The EasyIO and EasyConnection 8/32 families of boards use the stl driver.
ISA board configuration entries for the stl driver take the general form
of:
stlX at isa? port <io-addr> tty irq <irq>
X is the unit number assigned to the board. Any unique value between 0
and 7 is valid.
The I/O address used by the board is specified by <io-addr>. Each of the
EasyIO and EasyConnection 8/32-AT boards can use an I/O address in the
range from 0 to 0x400.
All EasyIO and EasyConnection 8/32 boards require an interrupt, and this
interrupt is specified by <irq>. Legal IRQ values for the ISA boards are
3, 4, 5, 7, 10, 11, 12 and 15. Interrupts are software programmed on all
boards except the EasyIO-8M.
The EasyConnection 8/32-AT board uses a secondary I/O address region, and
this is fixed at address 0x280 in the driver code. All EasyConnection
8/32-AT boards may share the same secondary address region.
EasyConnection 8/32 PCI boards are detected automatically by the system
on boot up. No configuration information is required in advance for
these board types. During boot up the stl driver will issue messages to
indicate that an EasyConnection 8/32 PCI board was found, and some information
about it.
Following are some examples of configuration entries for each of the ISA
boards supported by the stl driver. Each example also describes some
important details about each of the board types.
Each EasyIO board requires 8 bytes of I/O address space and 1 IRQ line.
A configuration entry for an EasyIO board would look like:
stl0 at isa? port 0x2a8 tty irq 15
This entry specifies an EasyIO board at I/O address 0x2a8 using IRQ 15.
The I/O and IRQ values can be modified as required.
Each EasyConnection 8/32-AT board requires 2 sets of I/O addresses and 1
IRQ line. The primary I/O address range is 2 bytes in size, and must be
unique to each EasyConnection 8/32-AT board in the system. The secondary
I/O address range is 32 bytes in size, but can be shared by multiple
EasyConnection 8/32-AT boards. This secondary I/O address is set at
0x280 in the driver code. A configuration entry would look like:
stl0 at isa? port 0x2a0 irq 10 tty
This specifies an EasyConnection 8/32-AT with primary I/O address 0x2a0,
secondary I/O address of 0x280 and IRQ 10.
The ONboard, Brumby and EasyConnection 8/64 families of boards use the
stli driver. The stli driver supports the ISA and EISA members of these
families.
ISA board configuration entries for the stli driver take the general form
of:
stliX at isa? port <io-addr> tty iomem <mem-addr> iosiz <size> flags
<type>
X is the unit number assigned to the board. Any unique value between 0
and 7 is valid.
The I/O address used by the board is specified by <io-addr>. Each of the
different supported board types has restrictions on valid I/O addresses
and also the amount of I/O space required varies between the boards.
All boards using the stli driver require a shared memory region to operate.
Depending on the board type the region required varies in size from
4 kbytes to 64 kbytes. The size of the board region is specified by
field <size> of the configuration entry, and the address of the region is
specified by <mem-addr>.
The flags field specifies the particular board type that this entry
applies to. Not all board types are distinguishable by the driver at
runtime, so this field is required by the driver. Valid board types are:
BOARD NAME TYPE I/O SIZE
Brumby 2 0x4000
ONboard 4 0x10000
ONboard/E 7 0x10000
EasyConnection 8/64-AT 23 0x1000
EasyConnection 8/64-EISA 24 0x10000
Following are some examples of configuration entries for each of the
boards supported by the stli driver. Each example also describes some
important details about each of the board types.
The EasyConnection 8/64-AT board requires 4 bytes of I/O address space
and 4 kbytes of memory space. A configuration entry would look like:
stli0 at isa? port 0x2a0 tty iomem 0xcc000 iosiz 0x1000 flags 23
The flags field of this entry specifies that this is an EasyConnection
8/64-AT board. It is set to I/O address 0x2a0 and memory address
0xcc000. The iosiz parameter specifies a memory region size of 4 kbytes.
The EasyConnection 8/64-EISA board requires a 64 kbyte region of memory
space. This region can be anywhere in the 32 bit memory address space.
A configuration entry would be like:
stli0 at eisa? port 0x2000 tty iomem 0x80000000 iosiz 0x10000 flags 24
The flags field is used to specify that this is an EasyConnection
8/64-EISA board. The I/O (port) address resource is derived from the
EISA slot that the board is in. Each EISA slot is allocated a section of
the I/O address space by the hardware of the system. That address being
0xX000 where X is the slot number. The example board is at memory
address 0x80000000 which is 2 Gbyte. The iosiz parameter specifies the
size of the memory region, in this case 64 kbytes.
Each ONboard ISA board requires 16 bytes of I/O space and a 64 kbyte section
of memory address space. Valid ONboard I/O addresses are in the
range 0x200 to 0x300. A configuration entry for an ONboard ISA would
look like:
stli0 at isa? port 0x240 tty iomem 0xd0000 iosiz 0x10000 flags 4
This entry specifies an ONboard ISA by setting flags to 4. It uses I/O
address 0x240 and a memory region of 64 kbytes at memory address 0xd0000.
Each ONboard/E board requires a 64 kbyte memory region, and this can be
anywhere in the 32 bit address space (that is from 0 to 4 Gbyte). A configuration
entry would look like:
stli0 at eisa? port 0x3000 tty iomem 0xc0000000 iosiz 0x10000 flags 7
The specifies an ONboard/E in slot 3 using a shared memory address of
0xc0000000 (3 Gbyte).
Each Brumby board requires 16 bytes of I/O address space and a 4 kbyte
region of shared memory space. The valid Brumby I/O addresses are in the
range 0x300 to 0x400. The shared memory region of the Brumby must be in
the 0xc0000 to 0xdc000 region of the memory address space. A configuration
entry for a Brumby would be like:
stli0 at isa? port 0x360 tty iomem 0xc8000 iosiz 0x4000 flags 2
This specifies a Brumby board at I/O address 0x360 using a shared memory
region at address 0xc8000.
When building the device nodes for the ports be sure to use the correct
driver name, stl or stli. Each driver has a separate major number allocated,
so even though the port device names are the same for each driver,
the major number of the device node is different. Use the MAKEDEV(8)
script to create the devices. Use the ttyE and cue tag for the stl
driver, and the ttyEi and cuei tags for the stli driver.
The intelligent board types (ONboard, Brumby and EasyConnection 8/64)
require a firmware download before the ports will be operational. This
is achieved by using the stlload command. See its manual page for
details on usage.
/dev/ttyE? standard callin devices
/dev/ttyiE? initial-state callin devices
/dev/ttylE? lock-state callin devices
/dev/cue? standard callout devices
/dev/cuie? initial-state callout devices
/dev/cule? lock-state callout devices
/dev/staliomem? board control device
Note that the port numbers start at 0 for port 0 of board 0. Each board
has 64 port slots allocated for it. So the second boards ports start at
64 and go through 127. Use the MAKEDEV(8) script to create the devices.
Use the ttyE and cue tag for the stl driver, and the ttyEi and cuei tags
for the stli driver.
stty(1), termios(4), tty(4), comcontrol(8), MAKEDEV(8), stlload(8),
stlstats(8)
This driver was originally developed by Greg Ungerer <[email protected]>.
FreeBSD 5.2.1 December 2, 1996 FreeBSD 5.2.1 [ Back ] |
