patch-2.1.50 linux/drivers/char/README.esp

• Lines: 95
• Date: Mon Aug 11 16:57:59 1997
• Orig file: v2.1.49/linux/drivers/char/README.esp
• Orig date: Wed Dec 11 07:16:07 1996

diff -u --recursive --new-file v2.1.49/linux/drivers/char/README.esp linux/drivers/char/README.esp
@@ -1,94 +0,0 @@
-HAYES ESP DRIVERS VERSION 1.0
-
-Features:
-
-- Uses the enhanced mode of the ESP card, allowing a wider range of
-  interrupts and features than compatibilty mode
-- Uses DMA to transfer data to and from the ESP's FIFOs, reducing CPU load
-- Supports primary and secondary ports
-
-The driver can be compiled as a module.  The module will be called 'esp.o'.
-The IRQs to use can be specified by using the irq= option.  The format is:
-
-irq=[0x100],[0x140],[0x180],[0x200],[0x240],[0x280],[0x300],[0x380]
-
-The address in brackets is the base address of the card.  The IRQ of
-nonexistant cards can be set to 0.  If and IRQ of a card that does exist is set
-to 0, the driver will attempt to guess at the correct IRQ.  For example, to set
-the IRQ of the card at address 0x300 to 12, the insmod command would be:
-
-insmod esp irq=0,0,0,0,0,0,12,0
-
-The custom divisor can be set by using the divisor= option.  The format is the
-same as for the irq= option.  Each divisor value is a series of hex digits,
-with each digit representing the divisor to use for a corresponding port.  The
-divisor value is constructed RIGHT TO LEFT.  Specifying a nonzero divisor value
-will automatically set the spd_cust flag.  To calculate the divisor to use for
-a certain baud rate, divide the port's base baud (921600) by the desired rate.
-For example, to set the divisor of the primary port at 0x300 to 4 and the
-divisor of the secondary port at 0x308 to 8, the insmod command would be:
-
-insmod esp divisor=0,0,0,0,0,0,0x84,0
-
-The dma= option can be used to set the DMA channel.  The channel can be either
-1 or 3.  For example, to set the dma channel to 3, the insmod command would be:
-
-insmod esp dma=3
-
-The trigger= option can be used to set the FIFO trigger levels.  This specifies
-when the ESP card should send an interrupt.  Larger values will decrease the
-number of interrupts; however, a value too high may result in data loss.
-Valid values are 1 through 1015, with 768 being the default.  For example, to
-set the trigger levels to 512 bytes, the insmod command would be:
-
-insmod esp trigger=512
-
-Multiple options can be listed on the insmod command line by separating each
-option with a space.  For example:
-
-insmod esp dma=3 trigger=512
-
-The esp module can be automatically loaded when needed.  To cause this to
-happen, add the following lines to /etc/conf.modules (replacing the last line
-with options for your configuration):
-
-alias char-major-57 esp
-alias char-major-58 esp
-options esp irq=0,0,0,0,0,0,3,0 divisor=0,0,0,0,0,0,0x4,0
-
-You may also need to run 'depmod -a'.
-
-Devices must be created manually.  To create the devices, note the output from
-the module after it is inserted.  The output will appear in the location where
-kernel messages usually appear (usually /var/adm/messages).  Create two devices
-for each 'tty' mentioned, one with major of 57 and the other with major of 58.
-The minor number should be the same as the tty number reported.  The commands
-would be (replace ? with the tty number):
-
-mknod /dev/ttyP? c 57 ?
-mknod /dev/cup? c 58 ?
-
-For example, if the following line appears:
-
-Oct 24 18:17:23 techno kernel: ttyP8 at 0x0140 (irq = 3) is an ESP primary port
-
-...two devices should be created:
-
-mknod /dev/ttyP8 c 57 8
-mknod /dev/cup8 c 58 8
-
-You may need to set the permissions on the devices:
-
-chmod 666 /dev/ttyP*
-chmod 666 /dev/cup*
-
-The ESP module and the serial module should not conflict (they can be used at
-the same time).  After the ESP module has been loaded the ports on the ESP card
-will no longer be accessable by the serial driver.
-
-If I/O errors are experienced when accessing the port, check for IRQ and DMA
-conflicts ('cat /proc/interrupts' and 'cat /proc/dma' for a list of IRQs and
-DMAs currently in use).
-
-Enjoy!
-Andrew J. Robinson <arobinso@nyx.net>