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Attempt to fix the crash if accessing usb device(s) after unloading usb.ko.
Add a boot loader tunable hw.usb.hack_defer_exploration, which if set to 0 reverts to the old USB behaviour, i.e. USB keyboards should be again usable early at boot. By default, this is set to 1 which will avoid hanging the system on qemu and my HP compaq laptop and maybe others. Note that this is a hack around a shortcoming in the current USB stack and will go away once the shortcoming has been fixed.
Allow a NULL pointer as argument to usb_get_next_event(), and don't allocate a "struct usb_event" on stack in usb_add_event(). Obtained-from: NetBSD/usb.c 1.83
Remove __HAVE_GENERIC_SOFT_INTERRUPTS ifdefs as we don't support the softintr_* API of NetBSD.
Fix typos and cosmetic changes.
Get completely rid of sc_dev in usb_softc and uhub_softc structures. Instead of directly passing around the softc structure, pass the device_t around and access the softc structure via device_get_softc.
Defer boot-time exploration of USB busses until all devices in the system have been attached, but no later. This ensures that we do not explore ohci or uhci busses before the companion ehci controller has been initialised, so it should fix the problem of multi-speed USB devices getting attached as USB 1 devices first and then re-attached as USB 2. This fixes issue #946 for qemu and my HP Compaq 6710b laptop. Obtained-from: FreeBSD/usb.c 1.104 to 1.106 and NetBSD/usb.c 1.35 Dragonfly-bug: <http://bugs.dragonflybsd.org/issue947>
Fix two cases where device_printf() was used with an empty format.
kprintf to device_printf conversion.
Revert rev 1.40, which will cause deadlock, if task's function tries to enqueue itself. Approved-by: dillon@
Add an interlock for certain usb task operations.
Remove last usb_port.h defines usages from the tree - selwakeuppri(), config_pending_*(), config_detach(), clalloc(), clfree(), usb_malloc_type and usb_proc_ptr. Move some defines to bus/usb/usb.h and remove bus/usb/usb_port.h include from there. Drivers that want to use portability macros have to include <bus/usb/usb_port.h> directly.
Nuke USB_DECLARE_DRIVER and USB_DECLARE_DRIVER_INIT macros.
Nuke USB_GET_SC and USB_GET_SC_OPEN macros.
Nuke USB_MATCH*, USB_ATTACH* and USB_DETACH* macros.
Nuke PROC_(UN)LOCK, usb_callout_t, usb_kthread_create* and uio_procp.
Nuke usb_ callout macros.
Nuke SIMPLEQ_* and logprintf.
Nuke device_ptr_t, USBBASEDEVICE, USBDEVNAME(), USBDEVUNIT(), USBGETSOFTC(), USBDEVPTRNAME() and Static with help from sed(1).
Nuke the code specific to NetBSD/OpenBSD/FreeBSD at first. I doubt anyone will update these pieces and I don't intend to review macros for all platforms. There is the chance though that I might kill something which should stay in the code in form "TODO: port it to DF". So, please review and kick me.
Fix compiler warning (embedded /*)
Backout the last commit, it's creating panics. Reported-by: Sascha Wildner <firstname.lastname@example.org>
Create the USB task queues before creating the event thread to avoid possible races with the discovery. Clean up the event thread termination code.
Implement kern.do_async_attach. default disabled. To enable add kern.do_async_attach="1" to your /boot/loader.conf. This feature allows conforming drivers to attach in their own thread, allowing multiple drivers to attach in parallel. Implement a new device state, DS_INPROGRESS. Seems to work properly. Implement device_set_async_attach(), which allows a device's probe function to indicate that it is ok for its attach function to be run in its own thread. Split tsleep's enable out from the 'cold' variable. tsleep works earlier then when cold is cleared. Add a 'tsleep_now_works' variable to take over the functionality. Implement DRIVERSLEEP()... similar to DELAY(), this function works in any context and will call lwkt_switch() in its spin loop. It isn't perfect yet. ATA/NATA: * Uses the new async attach feature * Uses DRIVERSLEEP * No longer uses a configuration interrupt hook. Interrupts are now available during device config. NOTE: atapicam does not seem to be scanning the 'bus' (from cam's point of view), so 'cd0' is not found until CAM scans the bus itself in the interrupt config hook code. USB: * Uses the new async attach feature * Uses tsleep instead of DELAY MISC: * IF_EM, IF_NFE also use the async attach feature as a test, but it doesn't seem to have a huge effect.
Rename printf -> kprintf in sys/ and add some defines where necessary (files which are used in userland, too).
Exploring low speed busses during cold boot, so USB keyboard will work even if the kernel is configured with "device atkbd" and "device atkbdc" Reported-by: Petr Janda <email@example.com> Tested-by: Petr Janda <firstname.lastname@example.org>
Sync USB support (host controller part) with FreeBSD6. Following changes on FreeBSD-CURRENT(by email@example.com) are merged: ehci.c rev 1.52 ohci.c rev 1.167 uhci.c rev 1.172 usb.c rev 1.111 usbdi.h rev 1.61 "Use a different task queue for host controller and peripheral driver tasks. Since the host controllers rely on tasks to process transfer timeouts, if a synchronous transfer from a driver was invoked from a task and timed out, it would never complete because the single task thread was stuck performing the synchronous transfer so couldn't process the timeout." As of this commit, only following kernel APIs are changed: - usbd_get_string_desc() takes one more argument which returns the actual size of the string description. - usb_add_task() takes one more argument. The extra arguemnt is used to specify to which task queue the task should be added. There is two task queues defined, one for peripheral driver (USB_TASKQ_DRIVER), one for host controller (USB_TASKQ_HC). ugen(4) is adapted according to the above kernel API changes. Thank all of the folks for their work on the USB support. Tested-by: swildner@, vbd@, joerg@(1.6 backport), Max Herrgard <firstname.lastname@example.org> # Though VT6202 is supported by ehci(4), I still have problems with this # chip, even with the updated ehci(4).
Do a major clean-up of the BUSDMA architecture. A large number of essentially machine-independant drivers use the structures and definitions in machine-dependant directories that are really machine-independant in nature. Split <machine/bus_dma.h> into machine-depdendant and machine-independant parts and make the primary access run through <sys/bus_dma.h>. Remove <machine/bus.h>, <machine/bus_memio.h> and <machine/bus_pio.h>. The optimizations related to bus_memio.h and bus_pio.h made a huge mess, introduced machine-specific knowledge into essentially machine-independant drivers, and required specific #include file orderings to do their job. They may be reintroduced in some other form later on. Move <machine/resource.h> to <sys/bus_resource.h>. The contents of the file is machine-independant or can be made a superset across many platforms. Make <sys/bus.h> include <sys/bus_dma.h> and <sys/bus_resource.h> and include <sys/bus.h> where necessary. Remove all #include's of <machine/resource.h> and <machine/bus.h>. That is, make the BUSDMA infrastructure integral to I/O-mapped and memory-mapped accesses to devices and remove a large chunk of machine-specific dependancies from drivers. bus_if.h and device_if.h are now required to be present when using <sys/bus.h>.
Change the kernel dev_t, representing a pointer to a specinfo structure, to cdev_t. Change struct specinfo to struct cdev. The name 'cdev' was taken from FreeBSD. Remove the dev_t shim for the kernel. This commit generally removes the overloading of 'dev_t' between userland and the kernel. Also fix a bug in libkvm where a kernel dev_t (now cdev_t) was not being properly converted to a userland dev_t.
Rename malloc->kmalloc, free->kfree, and realloc->krealloc. Pass 1
Rename functions to avoid conflicts with libc.
MASSIVE reorganization of the device operations vector. Change cdevsw to dev_ops. dev_ops is a syslink-compatible operations vector structure similar to the vop_ops structure used by vnodes. Remove a huge number of instances where a thread pointer is still being passed as an argument to various device ops and other related routines. The device OPEN and IOCTL calls now take a ucred instead of a thread pointer, and the CLOSE call no longer takes a thread pointer.
Add kernel syscall support for explicit blocking and non-blocking I/O regardless of the setting applied to the file pointer. send/sendmsg/sendto/recv/recvmsg/recfrom: New MSG_ flags defined in sys/socket.h may be passed to these functions to override the settings applied to the file pointer on a per-I/O basis. MSG_FBLOCKING - Force the operation to be blocking MSG_FNONBLOCKING- Force the operation to be non-blocking pread/preadv/pwrite/pwritev: These system calls have been renamed and wrappers will be added to libc. The new system calls are prefixed with a double underscore (like getcwd vs __getcwd) and include an additional flags argument. The new flags are defined in sys/fcntl.h and may be used to override settings applied to the file pointer on a per-I/O basis. Additionally, the internal __ versions of these functions now accept an offset of -1 to mean 'degenerate into a read/readv/write/writev' (i.e. use the offset in the file pointer and update it on completion). O_FBLOCKING - Force the operation to be blocking O_FNONBLOCKING - Force the operation to be non-blocking O_FAPPEND - Force the write operation to append (to a regular file) O_FOFFSET - (implied of the offset != -1) - offset is valid O_FSYNCWRITE - Force a synchronous write O_FASYNCWRITE - Force an asynchronous write O_FUNBUFFERED - Force an unbuffered operation (O_DIRECT) O_FBUFFERED - Force a buffered operation (negate O_DIRECT) If the flags do not specify an operation (e.g. neither FBLOCKING or FNONBLOCKING are set), then the settings in the file pointer are used. The original system calls will become wrappers in libc, without the flags arguments. The new system calls will be made available to libc_r to allow it to perform non-blocking I/O without having to mess with a descriptor's file flags. NOTE: the new __pread and __pwrite system calls are backwards compatible with the originals due to a pad byte that libc always set to 0. The new __preadv and __pwritev system calls are NOT backwards compatible, but since they were added to HEAD just two months ago I have decided to not renumber them either. NOTE: The subrev has been bumped to 1.5.4 and installworld will refuse to install if you are not running at least a 1.5.4 kernel.
* Move function types to a separate line. * Ansify function definitions. * Remove (void) casts for discarded return values. In collaboration with: Alexey Slynko <email@example.com>
Remove spl*() calls from the bus/ infrastructure, replacing them with critical sections. Remove splusb() from everywhere, replacing it with critical sections.
Device layer rollup commit. * cdevsw_add() is now required. cdevsw_add() and cdevsw_remove() may specify a mask/match indicating the range of supported minor numbers. Multiple cdevsw_add()'s using the same major number, but distinctly different ranges, may be issued. All devices that failed to call cdevsw_add() before now do. * cdevsw_remove() now automatically marks all devices within its supported range as being destroyed. * vnode->v_rdev is no longer resolved when the vnode is created. Instead, only v_udev (a newly added field) is resolved. v_rdev is resolved when the vnode is opened and cleared on the last close. * A great deal of code was making rather dubious assumptions with regards to the validity of devices associated with vnodes, primarily due to the persistence of a device structure due to being indexed by (major, minor) instead of by (cdevsw, major, minor). In particular, if you run a program which connects to a USB device and then you pull the USB device and plug it back in, the vnode subsystem will continue to believe that the device is open when, in fact, it isn't (because it was destroyed and recreated). In particular, note that all the VFS mount procedures now check devices via v_udev instead of v_rdev prior to calling VOP_OPEN(), since v_rdev is NULL prior to the first open. * The disk layer's device interaction has been rewritten. The disk layer (i.e. the slice and disklabel management layer) no longer overloads its data onto the device structure representing the underlying physical disk. Instead, the disk layer uses the new cdevsw_add() functionality to register its own cdevsw using the underlying device's major number, and simply does NOT register the underlying device's cdevsw. No confusion is created because the device hash is now based on (cdevsw,major,minor) rather then (major,minor). NOTE: This also means that underlying raw disk devices may use the entire device minor number instead of having to reserve the bits used by the disk layer, and also means that can we (theoretically) stack a fully disklabel-supported 'disk' on top of any block device. * The new reference counting scheme prevents this by associating a device with a cdevsw and disconnecting the device from its cdevsw when the cdevsw is removed. Additionally, all udev2dev() lookups run through the cdevsw mask/match and only successfully find devices still associated with an active cdevsw. * Major work on MFS: MFS no longer shortcuts vnode and device creation. It now creates a real vnode and a real device and implements real open and close VOPs. Additionally, due to the disk layer changes, MFS is no longer limited to 255 mounts. The new limit is 16 million. Since MFS creates a real device node, mount_mfs will now create a real /dev/mfs<PID> device that can be read from userland (e.g. so you can dump an MFS filesystem). * BUF AND DEVICE STRATEGY changes. The struct buf contains a b_dev field. In order to properly handle stacked devices we now require that the b_dev field be initialized before the device strategy routine is called. This required some additional work in various VFS implementations. To enforce this requirement, biodone() now sets b_dev to NODEV. The new disk layer will adjust b_dev before forwarding a request to the actual physical device. * A bug in the ISO CD boot sequence which resulted in a panic has been fixed. Testing by: lots of people, but David Rhodus found the most aggregious bugs.
device switch 1/many: Remove d_autoq, add d_clone (where d_autoq was). d_autoq was used to allow the device port dispatch to mix old-style synchronous calls with new style messaging calls within a particular device. It was never used for that purpose. d_clone will be more fully implemented as work continues. We are going to install d_port in the dev_t (struct specinfo) structure itself and d_clone will be needed to allow devices to 'revector' the port on a minor-number by minor-number basis, in particular allowing minor numbers to be directly dispatched to distinct threads. This is something we will be needing later on.
Use M_INTWAIT and M_WAITOK instead of M_NOWAIT within the USB bus infrastructure. For the system to operate as expected, allocations done in this layer have to be reliable.
Add defined(__FreeBSD__) and defined(__DragonFly__) where appropriate
Get rid of PZERO. This was removed about the first of August. It probably compiled due to the preprocessor defining code out.
Bring in the entire FreeBSD-5 USB infrastructure. As of this commit my USB camera, Hard Drive, Mouse, and Sony memory key all work and I can even unplug and replug them in without crashing the port. Not all drivers and subsystems compile as of this commit, but the ones that do not are very close.
kernel tree reorganization stage 1: Major cvs repository work (not logged as commits) plus a major reworking of the #include's to accomodate the relocations. * CVS repository files manually moved. Old directories left intact and empty (temporary). * Reorganize all filesystems into vfs/, most devices into dev/, sub-divide devices by function. * Begin to move device-specific architecture files to the device subdirs rather then throwing them all into, e.g. i386/include * Reorganize files related to system busses, placing the related code in a new bus/ directory. Also move cam to bus/cam though this may not have been the best idea in retrospect. * Reorganize emulation code and place it in a new emulation/ directory. * Remove the -I- compiler option in order to allow #include file localization, rename all config generated X.h files to use_X.h to clean up the conflicts. * Remove /usr/src/include (or /usr/include) dependancies during the kernel build, beyond what is normally needed to compile helper programs. * Make config create 'machine' softlinks for architecture specific directories outside of the standard <arch>/include. * Bump the config rev. WARNING! after this commit /usr/include and /usr/src/sys/compile/* should be regenerated from scratch.
DEV messaging stage 1/4: Rearrange struct cdevsw and add a message port and auto-queueing mask. The mask will tell us which message functions can be safely queued to another thread and which still need to run in the context of the caller. Primary configuration fields (name, cmaj, flags, port, autoq mask) are now at the head of the structure. Function vectors, which may eventually go away, are at the end. The port and autoq fields are non-functional in this stage. The old BDEV device major number support has also been removed from cdevsw, and code has been added to translate the bootdev passed from the boot code (the boot code has always passed the now defunct block device major numbers and we obviously need to keep that compatibility intact).
Remove the priority part of the priority|flags argument to tsleep(). Only flags are passed now. The priority was a user scheduler thingy that is not used by the LWKT subsystem. For process statistics assume sleeps without P_SINTR set to be disk-waits, and sleeps with it set to be normal sleeps. This commit should not contain any operational changes.
proc->thread stage 6: kernel threads now create processless LWKT threads. A number of obvious curproc cases were removed, tsleep/wakeup was made to work with threads (wmesg, ident, and timeout features moved to threads). There are probably a few curproc cases left to fix.
proc->thread stage 4: rework the VFS and DEVICE subsystems to take thread pointers instead of process pointers as arguments, similar to what FreeBSD-5 did. Note however that ultimately both APIs are going to be message-passing which means the current thread context will not be useable for creds and descriptor access.
proc->thread stage 2: MAJOR revamping of system calls, ucred, jail API, and some work on the low level device interface (proc arg -> thread arg). As -current did, I have removed p_cred and incorporated its functions into p_ucred. p_prison has also been moved into p_ucred and adjusted accordingly. The jail interface tests now uses ucreds rather then processes. The syscall(p,uap) interface has been changed to just (uap). This is inclusive of the emulation code. It makes little sense to pass a proc pointer around which confuses the MP readability of the code, because most system call code will only work with the current process anyway. Note that eventually *ALL* syscall emulation code will be moved to a kernel-protected userland layer because it really makes no sense whatsoever to implement these emulations in the kernel. suser() now takes no arguments and only operates with the current process. The process argument has been removed from suser_xxx() so it now just takes a ucred and flags. The sysctl interface was adjusted somewhat.
Add the DragonFly cvs id and perform general cleanups on cvs/rcs/sccs ids. Most ids have been removed from !lint sections and moved into comment sections.
import from FreeBSD RELENG_4 22.214.171.124