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SubjectAnnounce: updated USB hotplug support
Matching Keith's modutils update, here's a a package of
hotplug scripts ... not yet as neatly packaged! And
also, not (yet) handling with the older file format for
the "modules.usbmap" files associated with 2.4.0 test (and
prerelease) kernels. It "ought" to behave with the usb
hotplug support in 2.2.18 kernels.

Extract into /etc/hotplug, and see the README. There's
a network hotplug agent but no PCI/Cardbus agent.

Followups to linux-hotplug-devel please.

- Dave


> From: Keith Owens <kaos@ocs.com.au>
> To: <linux-kernel@vger.kernel.org>
> Cc: <linux-hotplug-devel@lists.sourceforge.net>;
<linux-usb-devel@lists.sourceforge.net>
> Sent: Monday, January 08, 2001 7:52 AM
> Subject: Announce: modutils 2.4.1 is available
>
> In the absence of any screams of pain from the usb list, modutils 2.4.1
> is released for your enjoyment.
>
> ftp://ftp.<country>.kernel.org/pub/linux/utils/kernel/modutils/v2.4
>
> modutils-2.4.1.tar.gz Source tarball, includes RPM spec file
> modutils-2.4.1-1.src.rpm As above, in SRPM format
> modutils-2.4.1-1.i386.rpm Compiled with egcs-2.91.66, glibc 2.1.2
> modutils-2.4.1-1.sparc.rpm Compiled for combined sparc 32/64
> patch-modutils-2.4.1.gz Patch from modutils 2.4.0 to 2.4.1.
>
> Related kernel patches.
>
> patch-2.4.0-hotplug.gz Correctly handle USB modules in kernel 2.4.0.
> The fix adds a version number to tables read by
> depmod, this affects all kernel hotplug tables,
> not just USB. Required for USB on 2.4.0.
>
> patch-2.4.0-persistent.gz Adds persistent data and generic string
> support to kernel 2.4.0. Optional.
>
> Changelog extract
>
> * Cast 2*sizeof to int in printf, new gcc warns about this.
> * Add an optional version number to kernel tables.
> * Handle version 1 and 2 usb device tables.
> * man lsmod documents use count -1.
>
> NOTE:
>
> Handling the change of format for the USB tables highlighted the need
> for the kernel to include a version number against each table to tell
> depmod which format table it is processing. Checking for a change in
> table size was not enough. You _must_ apply patch-2.4.0-hotplug to
> 2.4.0 kernels in order to pick up the new USB table format. You will
> also need a new set of USB utilities that understand match_flags.
>
> patch-2.4.0-hotplug hits all hotplug tables, not just USB. The
> kernel and modutils changes are forward and backward compatible; old
> kernels will run with new modutils and vice versa. The only
> combination not supported is USB hotplugging in an unpatched kernel
> 2.4.0, there is no way for any version of modutils to detect which
> format USB table is being used in unpatched 2.4.0 kernels.
>
> patch-2.4.0-hotplug follows for reference, it is also in the URL at the
> top of this mail. With any luck this patch will be included in kernel
> 2.4.1.
>
> Index: 0.1/include/linux/usb.h
> - --- 0.1/include/linux/usb.h Fri, 05 Jan 2001 13:42:29 +1100 kaos
(linux-2.4/Z/38_usb.h 1.1 644)
> +++ 0.1(w)/include/linux/usb.h Sun, 07 Jan 2001 22:36:31 +1100 kaos
(linux-2.4/Z/38_usb.h 1.1 644)
> @@ -344,12 +344,18 @@ struct usb_device;
> #define USB_INTERFACE_INFO(cl,sc,pr) \
> match_flags: USB_DEVICE_ID_MATCH_INT_INFO, bInterfaceClass: (cl),
bInterfaceSubClass: (sc), bInterfaceProtocol: (pr)
>
> - -struct usb_device_id {
> - - /* This bitmask is used to determine which of the following fields
> - - * are to be used for matching.
> - - */
> - - __u16 match_flags;
> +/* match_flags added in 2.4.0 but at the start which messed up depmod.
> + * match_flags moved to before driver_info in 2.4.1 by KAO, you also need
> + * modutils 2.4.1. USB modules cannot be supported in kernel 2.4.0,
> + * insufficient data to detect which table format is being used.
> + *
> + * Do NOT change this table format without checking with the modutils
> + * maintainer. This is an ABI visible structure.
> + */
> +
> +#define usb_device_id_ver 2 /* Version 2 table */
>
> +struct usb_device_id {
> /*
> * vendor/product codes are checked, if vendor is nonzero
> * Range is for device revision (bcdDevice), inclusive;
> @@ -374,6 +380,11 @@ struct usb_device_id {
> __u8 bInterfaceClass;
> __u8 bInterfaceSubClass;
> __u8 bInterfaceProtocol;
> +
> + /* This bitmask is used to determine which of the preceding fields
> + * are to be used for matching.
> + */
> + __u16 match_flags; /* New in version 2 */
>
> /*
> * for driver's use; not involved in driver matching.
> Index: 0.1/include/linux/isapnp.h
> - --- 0.1/include/linux/isapnp.h Fri, 05 Jan 2001 13:42:29 +1100 kaos
(linux-2.4/b/b/11_isapnp.h 1.1 644)
> +++ 0.1(w)/include/linux/isapnp.h Sun, 07 Jan 2001 22:36:40 +1100 kaos
(linux-2.4/b/b/11_isapnp.h 1.1 644)
> @@ -142,6 +142,16 @@ struct isapnp_resources {
> #define ISAPNP_CARD_TABLE(name) \
> MODULE_GENERIC_TABLE(isapnp_card, name)
>
> +/* Do NOT change the format of struct isapnp_card_id, struct isapnp_device_id or
> + * the value of ISAPNP_CARD_DEVS without checking with the modutils maintainer.
> + * These are ABI visible structures and defines.
> + *
> + * isapnp_device_id_ver is a single version number for the combination of
> + * struct isapnp_card_id and struct isapnp_device_id.
> + */
> +
> +#define isapnp_device_id_ver 1 /* Version 1 tables */
> +
> struct isapnp_card_id {
> unsigned long driver_data; /* data private to the driver */
> unsigned short card_vendor, card_device;
> Index: 0.1/include/linux/module.h
> - --- 0.1/include/linux/module.h Fri, 05 Jan 2001 13:42:29 +1100 kaos
(linux-2.4/c/b/46_module.h 1.1 644)
> +++ 0.1(w)/include/linux/module.h Sun, 07 Jan 2001 22:07:49 +1100 kaos
(linux-2.4/c/b/46_module.h 1.1 644)
> @@ -242,19 +242,17 @@ __attribute__((section(".modinfo"))) =
> * isapnp - struct isapnp_device_id - List of ISA PnP ids supported by this module
> * usb - struct usb_device_id - List of USB ids supported by this module
> */
> - -#define MODULE_GENERIC_TABLE(gtype,name) \
> - -static const unsigned long __module_##gtype##_size \
> - - __attribute__ ((unused)) = sizeof(struct gtype##_id); \
> - -static const struct gtype##_id * __module_##gtype##_table \
> - - __attribute__ ((unused)) = name
> - -#define MODULE_DEVICE_TABLE(type,name) \
> - - MODULE_GENERIC_TABLE(type##_device,name)
> - -/* not put to .modinfo section to avoid section type conflicts */
>
> - -/* The attributes of a section are set the first time the section is
> - - seen; we want .modinfo to not be allocated. */
> +#define MODULE_GENERIC_TABLE(gtype,name) \
> +static const unsigned long __module_##gtype##_size \
> + __attribute__ ((unused)) = sizeof(struct gtype##_id); \
> +static const unsigned long __module_##gtype##_ver \
> + __attribute__ ((unused)) = gtype##_id_ver; \
> +static const struct gtype##_id * __module_##gtype##_table \
> + __attribute__ ((unused)) = name
>
> - -__asm__(".section .modinfo\n\t.previous");
> +#define MODULE_DEVICE_TABLE(type,name) \
> + MODULE_GENERIC_TABLE(type##_device,name)
>
> /* Define the module variable, and usage macros. */
> extern struct module __this_module;
> Index: 0.1/include/linux/pci.h
> - --- 0.1/include/linux/pci.h Fri, 05 Jan 2001 13:42:29 +1100 kaos
(linux-2.4/f/b/12_pci.h 1.1 644)
> +++ 0.1(w)/include/linux/pci.h Sun, 07 Jan 2001 22:36:09 +1100 kaos
(linux-2.4/f/b/12_pci.h 1.1 644)
> @@ -439,6 +439,12 @@ struct pbus_set_ranges_data
> unsigned long mem_start, mem_end;
> };
>
> +/* Do NOT change this table format without checking with the modutils
> + * maintainer. This is an ABI visible structure.
> + */
> +
> +#define pci_device_id_ver 1 /* Version 1 table */
> +
> struct pci_device_id {
> unsigned int vendor, device; /* Vendor and device ID or PCI_ANY_ID */
> unsigned int subvendor, subdevice; /* Subsystem ID's or PCI_ANY_ID */
> Index: 0.1/Documentation/Changes
> - --- 0.1/Documentation/Changes Fri, 05 Jan 2001 13:42:29 +1100 kaos
(linux-2.4/Z/c/26_Changes 1.1 644)
> +++ 0.4(w)/Documentation/Changes Tue, 09 Jan 2001 02:43:44 +1100 kaos
(linux-2.4/Z/c/26_Changes 1.1 644)
> @@ -52,7 +52,7 @@ o Gnu C 2.91.66
> o Gnu make 3.77 # make --version
> o binutils 2.9.1.0.25 # ld -v
> o util-linux 2.10o # fdformat --version
> - -o modutils 2.4.0 # insmod -V
> +o modutils 2.4.1 # insmod -V
> o e2fsprogs 1.19 # tune2fs --version
> o pcmcia-cs 3.1.21 # cardmgr -V
> o PPP 2.4.0 # pppd --version
>

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