Author: kib Date: Fri Apr 5 19:31:26 2019 New Revision: 345965 URL: https://svnweb.freebsd.org/changeset/base/345965
Log: Add DEV_RESET /dev/devctl2 ioctl. It performs BUS_RESET_CHILD() on the parental bus and the specified device. Reviewed by: imp (previous version), jhb (previous version) Sponsored by: Mellanox Technologies MFC after: 2 weeks Differential revision: https://reviews.freebsd.org/D19646 Modified: head/sys/kern/subr_bus.c head/sys/sys/bus.h Modified: head/sys/kern/subr_bus.c ============================================================================== --- head/sys/kern/subr_bus.c Fri Apr 5 19:27:51 2019 (r345964) +++ head/sys/kern/subr_bus.c Fri Apr 5 19:31:26 2019 (r345965) @@ -5646,6 +5646,7 @@ devctl2_ioctl(struct cdev *cdev, u_long cmd, caddr_t d case DEV_CLEAR_DRIVER: case DEV_RESCAN: case DEV_DELETE: + case DEV_RESET: error = priv_check(td, PRIV_DRIVER); if (error == 0) error = find_device(req, &dev); @@ -5870,6 +5871,14 @@ devctl2_ioctl(struct cdev *cdev, u_long cmd, caddr_t d device_do_deferred_actions(); device_frozen = false; } + break; + case DEV_RESET: + if ((req->dr_flags & ~(DEVF_RESET_DETACH)) != 0) { + error = EINVAL; + break; + } + error = BUS_RESET_CHILD(device_get_parent(dev), dev, + req->dr_flags); break; } mtx_unlock(&Giant); Modified: head/sys/sys/bus.h ============================================================================== --- head/sys/sys/bus.h Fri Apr 5 19:27:51 2019 (r345964) +++ head/sys/sys/bus.h Fri Apr 5 19:31:26 2019 (r345965) @@ -130,6 +130,7 @@ struct devreq { #define DEV_DELETE _IOW('D', 10, struct devreq) #define DEV_FREEZE _IOW('D', 11, struct devreq) #define DEV_THAW _IOW('D', 12, struct devreq) +#define DEV_RESET _IOW('D', 13, struct devreq) /* Flags for DEV_DETACH and DEV_DISABLE. */ #define DEVF_FORCE_DETACH 0x0000001 _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
