| ============ | |
| Device table | |
| ============ | |
| Matching of PCMCIA devices to drivers is done using one or more of the | |
| following criteria: | |
| - manufactor ID | |
| - card ID | |
| - product ID strings _and_ hashes of these strings | |
| - function ID | |
| - device function (actual and pseudo) | |
| You should use the helpers in include/pcmcia/device_id.h for generating the | |
| struct pcmcia_device_id[] entries which match devices to drivers. | |
| If you want to match product ID strings, you also need to pass the crc32 | |
| hashes of the string to the macro, e.g. if you want to match the product ID | |
| string 1, you need to use | |
| PCMCIA_DEVICE_PROD_ID1("some_string", 0x(hash_of_some_string)), | |
| If the hash is incorrect, the kernel will inform you about this in "dmesg" | |
| upon module initialization, and tell you of the correct hash. | |
| You can determine the hash of the product ID strings by catting the file | |
| "modalias" in the sysfs directory of the PCMCIA device. It generates a string | |
| in the following form: | |
| pcmcia:m0149cC1ABf06pfn00fn00pa725B842DpbF1EFEE84pc0877B627pd00000000 | |
| The hex value after "pa" is the hash of product ID string 1, after "pb" for | |
| string 2 and so on. | |
| Alternatively, you can use crc32hash (see tools/pcmcia/crc32hash.c) | |
| to determine the crc32 hash. Simply pass the string you want to evaluate | |
| as argument to this program, e.g.: | |
| $ tools/pcmcia/crc32hash "Dual Speed" |