tree e32c7dac4947a252f6e17e62db37ca0e4d5fdf9c parent b5bf5b6786ccfc9e0c8801291f463d92c8e0b423 author Jeff Mahoney <[EMAIL PROTECTED]> Wed, 06 Jul 2005 23:45:09 -0400 committer Linus Torvalds <[EMAIL PROTECTED]> Thu, 07 Jul 2005 02:55:20 -0700
[PATCH] openfirmware: implement hotplug for macio devices This adds the hotplug routine for generating hotplug events when devices are seen on the macio bus. It uses the attributed created by the sysfs nodes to generate the hotplug environment vars for userspace. Since the characters allowed inside the 'compatible' field are NUL terminated, they are exported as individual OF_COMPATIBLE_# variables, with OF_COMPATIBLE_N maintaining a count of how many there are. In order for hotplug to work with macio devices, patches to module-init-tools and hotplug must be applied. Those patches are available at: ftp://ftp.suse.com/pub/people/jeffm/linux/macio-hotplug/ Signed-off-by: Jeff Mahoney <[EMAIL PROTECTED]> Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]> drivers/macintosh/macio_asic.c | 71 +++++++++++++++++++++++++++++++++++++++++ 1 files changed, 71 insertions(+) diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c --- a/drivers/macintosh/macio_asic.c +++ b/drivers/macintosh/macio_asic.c @@ -126,11 +126,82 @@ static int macio_device_resume(struct de return 0; } +static int macio_hotplug (struct device *dev, char **envp, int num_envp, + char *buffer, int buffer_size) +{ + struct macio_dev * macio_dev; + struct of_device * of; + char *scratch, *compat; + int i = 0; + int length = 0; + int cplen, seen = 0; + + if (!dev) + return -ENODEV; + + macio_dev = to_macio_device(dev); + if (!macio_dev) + return -ENODEV; + + of = &macio_dev->ofdev; + scratch = buffer; + + /* stuff we want to pass to /sbin/hotplug */ + envp[i++] = scratch; + length += scnprintf (scratch, buffer_size - length, "OF_NAME=%s", + of->node->name); + if ((buffer_size - length <= 0) || (i >= num_envp)) + return -ENOMEM; + ++length; + scratch += length; + + envp[i++] = scratch; + length += scnprintf (scratch, buffer_size - length, "OF_TYPE=%s", + of->node->type); + if ((buffer_size - length <= 0) || (i >= num_envp)) + return -ENOMEM; + ++length; + scratch += length; + + /* Since the compatible field can contain pretty much anything + * it's not really legal to split it out with commas. We split it + * up using a number of environment variables instead. */ + + compat = (char *) get_property(of->node, "compatible", &cplen); + while (compat && cplen > 0) { + int l; + envp[i++] = scratch; + length += scnprintf (scratch, buffer_size - length, + "OF_COMPATIBLE_%d=%s", seen, compat); + if ((buffer_size - length <= 0) || (i >= num_envp)) + return -ENOMEM; + length++; + scratch += length; + l = strlen (compat) + 1; + compat += l; + cplen -= l; + seen++; + } + + envp[i++] = scratch; + length += scnprintf (scratch, buffer_size - length, + "OF_COMPATIBLE_N=%d", seen); + if ((buffer_size - length <= 0) || (i >= num_envp)) + return -ENOMEM; + ++length; + scratch += length; + + envp[i] = NULL; + + return 0; +} + extern struct device_attribute macio_dev_attrs[]; struct bus_type macio_bus_type = { .name = "macio", .match = macio_bus_match, + .hotplug = macio_hotplug, .suspend = macio_device_suspend, .resume = macio_device_resume, .dev_attrs = macio_dev_attrs, - To unsubscribe from this list: send the line "unsubscribe bk-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
