| @@ -1,14 +1,14 @@ | | | @@ -1,14 +1,14 @@ |
| 1 | /* $NetBSD: xbd_xenbus.c,v 1.117 2020/04/17 10:32:19 jdolecek Exp $ */ | | 1 | /* $NetBSD: xbd_xenbus.c,v 1.118 2020/04/17 10:35:06 jdolecek Exp $ */ |
| 2 | | | 2 | |
| 3 | /* | | 3 | /* |
| 4 | * Copyright (c) 2006 Manuel Bouyer. | | 4 | * Copyright (c) 2006 Manuel Bouyer. |
| 5 | * | | 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without | | 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions | | 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: | | 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright | | 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. | | 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright | | 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the | | 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. | | 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * | | 14 | * |
| @@ -40,27 +40,27 @@ | | | @@ -40,27 +40,27 @@ |
| 40 | * - initiate request: xbdread/write/open/ioctl/.. | | 40 | * - initiate request: xbdread/write/open/ioctl/.. |
| 41 | * - depending on operation, it is handled directly by disk(9) subsystem or | | 41 | * - depending on operation, it is handled directly by disk(9) subsystem or |
| 42 | * goes through physio(9) first. | | 42 | * goes through physio(9) first. |
| 43 | * - the request is ultimately processed by xbd_diskstart() that prepares the | | 43 | * - the request is ultimately processed by xbd_diskstart() that prepares the |
| 44 | * xbd requests, post them in the ring I/O queue, then signal the backend. | | 44 | * xbd requests, post them in the ring I/O queue, then signal the backend. |
| 45 | * | | 45 | * |
| 46 | * When a response is available in the queue, the backend signals the frontend | | 46 | * When a response is available in the queue, the backend signals the frontend |
| 47 | * via its event channel. This triggers xbd_handler(), which will link back | | 47 | * via its event channel. This triggers xbd_handler(), which will link back |
| 48 | * the response to its request through the request ID, and mark the I/O as | | 48 | * the response to its request through the request ID, and mark the I/O as |
| 49 | * completed. | | 49 | * completed. |
| 50 | */ | | 50 | */ |
| 51 | | | 51 | |
| 52 | #include <sys/cdefs.h> | | 52 | #include <sys/cdefs.h> |
| 53 | __KERNEL_RCSID(0, "$NetBSD: xbd_xenbus.c,v 1.117 2020/04/17 10:32:19 jdolecek Exp $"); | | 53 | __KERNEL_RCSID(0, "$NetBSD: xbd_xenbus.c,v 1.118 2020/04/17 10:35:06 jdolecek Exp $"); |
| 54 | | | 54 | |
| 55 | #include "opt_xen.h" | | 55 | #include "opt_xen.h" |
| 56 | | | 56 | |
| 57 | | | 57 | |
| 58 | #include <sys/param.h> | | 58 | #include <sys/param.h> |
| 59 | #include <sys/buf.h> | | 59 | #include <sys/buf.h> |
| 60 | #include <sys/bufq.h> | | 60 | #include <sys/bufq.h> |
| 61 | #include <sys/device.h> | | 61 | #include <sys/device.h> |
| 62 | #include <sys/disk.h> | | 62 | #include <sys/disk.h> |
| 63 | #include <sys/disklabel.h> | | 63 | #include <sys/disklabel.h> |
| 64 | #include <sys/conf.h> | | 64 | #include <sys/conf.h> |
| 65 | #include <sys/fcntl.h> | | 65 | #include <sys/fcntl.h> |
| 66 | #include <sys/kernel.h> | | 66 | #include <sys/kernel.h> |
| @@ -240,27 +240,27 @@ const struct cdevsw xbd_cdevsw = { | | | @@ -240,27 +240,27 @@ const struct cdevsw xbd_cdevsw = { |
| 240 | .d_write = xbdwrite, | | 240 | .d_write = xbdwrite, |
| 241 | .d_ioctl = xbdioctl, | | 241 | .d_ioctl = xbdioctl, |
| 242 | .d_stop = nostop, | | 242 | .d_stop = nostop, |
| 243 | .d_tty = notty, | | 243 | .d_tty = notty, |
| 244 | .d_poll = nopoll, | | 244 | .d_poll = nopoll, |
| 245 | .d_mmap = nommap, | | 245 | .d_mmap = nommap, |
| 246 | .d_kqfilter = nokqfilter, | | 246 | .d_kqfilter = nokqfilter, |
| 247 | .d_discard = nodiscard, | | 247 | .d_discard = nodiscard, |
| 248 | .d_flag = D_DISK | D_MPSAFE | | 248 | .d_flag = D_DISK | D_MPSAFE |
| 249 | }; | | 249 | }; |
| 250 | | | 250 | |
| 251 | extern struct cfdriver xbd_cd; | | 251 | extern struct cfdriver xbd_cd; |
| 252 | | | 252 | |
| 253 | static struct dkdriver xbddkdriver = { | | 253 | static const struct dkdriver xbddkdriver = { |
| 254 | .d_strategy = xbdstrategy, | | 254 | .d_strategy = xbdstrategy, |
| 255 | .d_minphys = xbdminphys, | | 255 | .d_minphys = xbdminphys, |
| 256 | .d_open = xbdopen, | | 256 | .d_open = xbdopen, |
| 257 | .d_close = xbdclose, | | 257 | .d_close = xbdclose, |
| 258 | .d_diskstart = xbd_diskstart, | | 258 | .d_diskstart = xbd_diskstart, |
| 259 | .d_iosize = xbd_iosize, | | 259 | .d_iosize = xbd_iosize, |
| 260 | }; | | 260 | }; |
| 261 | | | 261 | |
| 262 | static int | | 262 | static int |
| 263 | xbd_xenbus_match(device_t parent, cfdata_t match, void *aux) | | 263 | xbd_xenbus_match(device_t parent, cfdata_t match, void *aux) |
| 264 | { | | 264 | { |
| 265 | struct xenbusdev_attach_args *xa = aux; | | 265 | struct xenbusdev_attach_args *xa = aux; |
| 266 | | | 266 | |