[PATCH] orinoco: further comment cleanup in the PCI drivers

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Pavel Roskin
2006-04-07 04:11:00 -04:00
committed by John W. Linville
parent b884c872fa
commit dc3437d205
4 changed files with 22 additions and 112 deletions

View File

@@ -3,7 +3,7 @@
* Driver for Prism II devices which would usually be driven by orinoco_cs,
* but are connected to the PCI bus by a PLX9052.
*
* Current maintainers (as of 29 September 2003) are:
* Current maintainers are:
* Pavel Roskin <proski AT gnu.org>
* and David Gibson <hermes AT gibson.dropbear.id.au>
*
@@ -30,38 +30,18 @@
* other provisions required by the GPL. If you do not delete the
* provisions above, a recipient may use your version of this file
* under either the MPL or the GPL.
* Caution: this is experimental and probably buggy. For success and
* failure reports for different cards and adaptors, see
* orinoco_plx_id_table near the end of the file. If you have a
* card we don't have the PCI id for, and looks like it should work,
* drop me mail with the id and "it works"/"it doesn't work".
*
* Note: if everything gets detected fine but it doesn't actually send
* or receive packets, your first port of call should probably be to
* try newer firmware in the card. Especially if you're doing Ad-Hoc
* modes.
*
* The actual driving is done by orinoco.c, this is just resource
* allocation stuff. The explanation below is courtesy of Ryan Niemi
* on the linux-wlan-ng list at
* http://archives.neohapsis.com/archives/dev/linux-wlan/2001-q1/0026.html
*
* The PLX9052-based cards (WL11000 and several others) are a
* different beast than the usual PCMCIA-based PRISM2 configuration
* expected by wlan-ng. Here's the general details on how the WL11000
* PCI adapter works:
* Here's the general details on how the PLX9052 adapter works:
*
* - Two PCI I/O address spaces, one 0x80 long which contains the
* PLX9052 registers, and one that's 0x40 long mapped to the PCMCIA
* slot I/O address space.
*
* - One PCI memory address space, mapped to the PCMCIA memory space
* - One PCI memory address space, mapped to the PCMCIA attribute space
* (containing the CIS).
*
* After identifying the I/O and memory space, you can read through
* the memory space to confirm the CIS's device ID or manufacturer ID
* to make sure it's the expected card. qKeep in mind that the PCMCIA
* Using the later, you can read through the CIS data to make sure the
* card is compatible with the driver. Keep in mind that the PCMCIA
* spec specifies the CIS as the lower 8 bits of each word read from
* the CIS, so to read the bytes of the CIS, read every other byte
* (0,2,4,...). Passing that test, you need to enable the I/O address
@@ -71,7 +51,7 @@
* within the PCI memory space. Write 0x41 to the COR register to
* enable I/O mode and to select level triggered interrupts. To
* confirm you actually succeeded, read the COR register back and make
* sure it actually got set to 0x41, incase you have an unexpected
* sure it actually got set to 0x41, in case you have an unexpected
* card inserted.
*
* Following that, you can treat the second PCI I/O address space (the
@@ -101,16 +81,6 @@
* that, I've hot-swapped a number of times during debugging and
* driver development for various reasons (stuck WAIT# line after the
* radio card's firmware locks up).
*
* Hope this is enough info for someone to add PLX9052 support to the
* wlan-ng card. In the case of the WL11000, the PCI ID's are
* 0x1639/0x0200, with matching subsystem ID's. Other PLX9052-based
* manufacturers other than Eumitcom (or on cards other than the
* WL11000) may have different PCI ID's.
*
* If anyone needs any more specific info, let me know. I haven't had
* time to implement support myself yet, and with the way things are
* going, might not have time for a while..
*/
#define DRIVER_NAME "orinoco_plx"