2 * Copyright (c) 2010 Marcel Moolenaar
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
33 #include <sys/queue.h>
37 #include <bootstrap.h>
45 static EFI_GUID blkio_guid = BLOCK_IO_PROTOCOL;
47 typedef bool (*pd_test_cb_t)(pdinfo_t *, pdinfo_t *);
48 static int efipart_initfd(void);
49 static int efipart_initcd(void);
50 static int efipart_inithd(void);
51 static void efipart_cdinfo_add(pdinfo_t *);
53 static int efipart_strategy(void *, int, daddr_t, size_t, char *, size_t *);
54 static int efipart_realstrategy(void *, int, daddr_t, size_t, char *, size_t *);
56 static int efipart_open(struct open_file *, ...);
57 static int efipart_close(struct open_file *);
58 static int efipart_ioctl(struct open_file *, u_long, void *);
60 static int efipart_printfd(int);
61 static int efipart_printcd(int);
62 static int efipart_printhd(int);
64 /* EISA PNP ID's for floppy controllers */
69 /* Bounce buffer max size */
70 #define BIO_BUFFER_SIZE 0x4000
72 struct devsw efipart_fddev = {
75 .dv_init = efipart_initfd,
76 .dv_strategy = efipart_strategy,
77 .dv_open = efipart_open,
78 .dv_close = efipart_close,
79 .dv_ioctl = efipart_ioctl,
80 .dv_print = efipart_printfd,
84 struct devsw efipart_cddev = {
87 .dv_init = efipart_initcd,
88 .dv_strategy = efipart_strategy,
89 .dv_open = efipart_open,
90 .dv_close = efipart_close,
91 .dv_ioctl = efipart_ioctl,
92 .dv_print = efipart_printcd,
96 struct devsw efipart_hddev = {
99 .dv_init = efipart_inithd,
100 .dv_strategy = efipart_strategy,
101 .dv_open = efipart_open,
102 .dv_close = efipart_close,
103 .dv_ioctl = efipart_ioctl,
104 .dv_print = efipart_printhd,
108 static pdinfo_list_t fdinfo = STAILQ_HEAD_INITIALIZER(fdinfo);
109 static pdinfo_list_t cdinfo = STAILQ_HEAD_INITIALIZER(cdinfo);
110 static pdinfo_list_t hdinfo = STAILQ_HEAD_INITIALIZER(hdinfo);
113 * efipart_inithandles() is used to build up the pdinfo list from
114 * block device handles. Then each devsw init callback is used to
115 * pick items from pdinfo and move to proper device list.
116 * In ideal world, we should end up with empty pdinfo once all
117 * devsw initializers are called.
119 static pdinfo_list_t pdinfo = STAILQ_HEAD_INITIALIZER(pdinfo);
122 efiblk_get_pdinfo_list(struct devsw *dev)
124 if (dev->dv_type == DEVT_DISK)
126 if (dev->dv_type == DEVT_CD)
128 if (dev->dv_type == DEVT_FD)
133 /* XXX this gets called way way too often, investigate */
135 efiblk_get_pdinfo(struct devdesc *dev)
140 pdi = efiblk_get_pdinfo_list(dev->d_dev);
144 STAILQ_FOREACH(pd, pdi, pd_link) {
145 if (pd->pd_unit == dev->d_unit)
152 efiblk_get_pdinfo_by_device_path(EFI_DEVICE_PATH *path)
156 EFI_DEVICE_PATH *devp = path;
158 status = BS->LocateDevicePath(&blkio_guid, &devp, &h);
159 if (EFI_ERROR(status))
161 return (efiblk_get_pdinfo_by_handle(h));
165 same_handle(pdinfo_t *pd, EFI_HANDLE h)
168 return (pd->pd_handle == h || pd->pd_alias == h);
172 efiblk_get_pdinfo_by_handle(EFI_HANDLE h)
177 * Check hard disks, then cd, then floppy
179 STAILQ_FOREACH(dp, &hdinfo, pd_link) {
180 if (same_handle(dp, h))
182 STAILQ_FOREACH(pp, &dp->pd_part, pd_link) {
183 if (same_handle(pp, h))
187 STAILQ_FOREACH(dp, &cdinfo, pd_link) {
188 if (same_handle(dp, h))
190 STAILQ_FOREACH(pp, &dp->pd_part, pd_link) {
191 if (same_handle(pp, h))
195 STAILQ_FOREACH(dp, &fdinfo, pd_link) {
196 if (same_handle(dp, h))
203 efiblk_pdinfo_count(pdinfo_list_t *pdi)
208 STAILQ_FOREACH(pd, pdi, pd_link) {
215 efipart_find_parent(pdinfo_list_t *pdi, EFI_DEVICE_PATH *devpath)
218 EFI_DEVICE_PATH *parent;
220 /* We want to find direct parent */
221 parent = efi_devpath_trim(devpath);
222 /* We should not get out of memory here but be careful. */
226 STAILQ_FOREACH(pd, pdi, pd_link) {
227 /* We must have exact match. */
228 if (efi_devpath_match(pd->pd_devpath, parent))
236 * Return true when we should ignore this device.
239 efipart_ignore_device(EFI_HANDLE h, EFI_BLOCK_IO *blkio,
240 EFI_DEVICE_PATH *devpath)
242 EFI_DEVICE_PATH *node, *parent;
245 * We assume the block size 512 or greater power of 2.
246 * Also skip devices with block size > 64k (16 is max
247 * ashift supported by zfs).
248 * iPXE is known to insert stub BLOCK IO device with
251 if (blkio->Media->BlockSize < 512 ||
252 blkio->Media->BlockSize > (1 << 16) ||
253 !powerof2(blkio->Media->BlockSize)) {
254 efi_close_devpath(h);
258 /* Allowed values are 0, 1 and power of 2. */
259 if (blkio->Media->IoAlign > 1 &&
260 !powerof2(blkio->Media->IoAlign)) {
261 efi_close_devpath(h);
266 * With device tree setup:
267 * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)
268 * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x1)
269 * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x2)
270 * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x3)
271 * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x3)/CDROM..
272 * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x3)/CDROM..
273 * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x4)
274 * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x5)
275 * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x6)
276 * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x7)
278 * In above exmple only Unit(0x3) has media, all other nodes are
279 * missing media and should not be used.
281 * No media does not always mean there is no device, but in above
282 * case, we can not really assume there is any device.
283 * Therefore, if this node is USB, or this node is Unit (LUN) and
284 * direct parent is USB and we have no media, we will ignore this
287 * Variation of the same situation, but with SCSI devices:
288 * PciRoot(0x0)/Pci(0x1a,0x0)/USB(0x1,0)/USB(0x3,0x0)/SCSI(0x0,0x1)
289 * PciRoot(0x0)/Pci(0x1a,0x0)/USB(0x1,0)/USB(0x3,0x0)/SCSI(0x0,0x2)
290 * PciRoot(0x0)/Pci(0x1a,0x0)/USB(0x1,0)/USB(0x3,0x0)/SCSI(0x0,0x3)
291 * PciRoot(0x0)/Pci(0x1a,0x0)/USB(0x1,0)/USB(0x3,0x0)/SCSI(0x0,0x3)/CD..
292 * PciRoot(0x0)/Pci(0x1a,0x0)/USB(0x1,0)/USB(0x3,0x0)/SCSI(0x0,0x3)/CD..
293 * PciRoot(0x0)/Pci(0x1a,0x0)/USB(0x1,0)/USB(0x3,0x0)/SCSI(0x0,0x4)
295 * Here above the SCSI luns 1,2 and 4 have no media.
298 /* Do not ignore device with media. */
299 if (blkio->Media->MediaPresent)
302 node = efi_devpath_last_node(devpath);
306 /* USB without media present */
307 if (DevicePathType(node) == MESSAGING_DEVICE_PATH &&
308 DevicePathSubType(node) == MSG_USB_DP) {
309 efi_close_devpath(h);
313 parent = efi_devpath_trim(devpath);
314 if (parent != NULL) {
315 bool parent_is_usb = false;
317 node = efi_devpath_last_node(parent);
322 if (DevicePathType(node) == MESSAGING_DEVICE_PATH &&
323 DevicePathSubType(node) == MSG_USB_DP)
324 parent_is_usb = true;
327 node = efi_devpath_last_node(devpath);
331 DevicePathType(node) == MESSAGING_DEVICE_PATH) {
333 * no media, parent is USB and devicepath is
336 if (DevicePathSubType(node) ==
337 MSG_DEVICE_LOGICAL_UNIT_DP ||
338 DevicePathSubType(node) == MSG_SCSI_DP) {
339 efi_close_devpath(h);
348 efipart_inithandles(void)
353 EFI_DEVICE_PATH *devpath;
358 if (!STAILQ_EMPTY(&pdinfo))
363 status = BS->LocateHandle(ByProtocol, &blkio_guid, 0, &sz, hin);
364 if (status == EFI_BUFFER_TOO_SMALL) {
368 status = BS->LocateHandle(ByProtocol, &blkio_guid, 0, &sz,
370 if (EFI_ERROR(status))
373 if (EFI_ERROR(status))
374 return (efi_status_to_errno(status));
376 nin = sz / sizeof(*hin);
378 printf("%s: Got %d BLOCK IO MEDIA handle(s)\n", __func__, nin);
381 for (i = 0; i < nin; i++) {
383 * Get devpath and open protocol.
384 * We should not get errors here
386 if ((devpath = efi_lookup_devpath(hin[i])) == NULL)
389 status = OpenProtocolByHandle(hin[i], &blkio_guid,
391 if (EFI_ERROR(status)) {
392 printf("error %lu\n", EFI_ERROR_CODE(status));
396 if (efipart_ignore_device(hin[i], blkio, devpath))
400 if ((pd = calloc(1, sizeof(*pd))) == NULL) {
401 printf("efipart_inithandles: Out of memory.\n");
405 STAILQ_INIT(&pd->pd_part);
407 pd->pd_handle = hin[i];
408 pd->pd_devpath = devpath;
409 pd->pd_blkio = blkio;
410 STAILQ_INSERT_TAIL(&pdinfo, pd, pd_link);
414 * Walk pdinfo and set parents based on device path.
416 STAILQ_FOREACH(pd, &pdinfo, pd_link) {
417 pd->pd_parent = efipart_find_parent(&pdinfo, pd->pd_devpath);
424 * Get node identified by pd_test() from plist.
427 efipart_get_pd(pdinfo_list_t *plist, pd_test_cb_t pd_test, pdinfo_t *data)
431 STAILQ_FOREACH(pd, plist, pd_link) {
432 if (pd_test(pd, data))
439 static ACPI_HID_DEVICE_PATH *
440 efipart_floppy(EFI_DEVICE_PATH *node)
442 ACPI_HID_DEVICE_PATH *acpi;
444 if (DevicePathType(node) == ACPI_DEVICE_PATH &&
445 DevicePathSubType(node) == ACPI_DP) {
446 acpi = (ACPI_HID_DEVICE_PATH *) node;
447 if (acpi->HID == EISA_PNP_ID(PNP0604) ||
448 acpi->HID == EISA_PNP_ID(PNP0700) ||
449 acpi->HID == EISA_PNP_ID(PNP0701)) {
457 efipart_testfd(pdinfo_t *fd, pdinfo_t *data __unused)
459 EFI_DEVICE_PATH *node;
461 node = efi_devpath_last_node(fd->pd_devpath);
465 if (efipart_floppy(node) != NULL)
474 EFI_DEVICE_PATH *node;
475 ACPI_HID_DEVICE_PATH *acpi;
476 pdinfo_t *parent, *fd;
478 while ((fd = efipart_get_pd(&pdinfo, efipart_testfd, NULL)) != NULL) {
479 if ((node = efi_devpath_last_node(fd->pd_devpath)) == NULL)
482 if ((acpi = efipart_floppy(node)) == NULL)
485 STAILQ_REMOVE(&pdinfo, fd, pdinfo, pd_link);
486 parent = fd->pd_parent;
487 if (parent != NULL) {
488 STAILQ_REMOVE(&pdinfo, parent, pdinfo, pd_link);
489 parent->pd_alias = fd->pd_handle;
490 parent->pd_unit = acpi->UID;
494 fd->pd_unit = acpi->UID;
496 fd->pd_devsw = &efipart_fddev;
497 STAILQ_INSERT_TAIL(&fdinfo, fd, pd_link);
500 bcache_add_dev(efiblk_pdinfo_count(&fdinfo));
505 * Add or update entries with new handle data.
508 efipart_cdinfo_add(pdinfo_t *cd)
510 pdinfo_t *parent, *pd, *last;
515 parent = cd->pd_parent;
516 /* Make sure we have parent added */
517 efipart_cdinfo_add(parent);
519 STAILQ_FOREACH(pd, &pdinfo, pd_link) {
520 if (efi_devpath_match(pd->pd_devpath, cd->pd_devpath)) {
521 STAILQ_REMOVE(&pdinfo, cd, pdinfo, pd_link);
526 /* This device is already added. */
530 if (parent != NULL) {
531 last = STAILQ_LAST(&parent->pd_part, pdinfo, pd_link);
533 cd->pd_unit = last->pd_unit + 1;
536 cd->pd_devsw = &efipart_cddev;
537 STAILQ_INSERT_TAIL(&parent->pd_part, cd, pd_link);
541 last = STAILQ_LAST(&cdinfo, pdinfo, pd_link);
543 cd->pd_unit = last->pd_unit + 1;
547 cd->pd_devsw = &efipart_cddev;
548 STAILQ_INSERT_TAIL(&cdinfo, cd, pd_link);
552 efipart_testcd(pdinfo_t *cd, pdinfo_t *data __unused)
554 EFI_DEVICE_PATH *node;
556 node = efi_devpath_last_node(cd->pd_devpath);
560 if (efipart_floppy(node) != NULL)
563 if (DevicePathType(node) == MEDIA_DEVICE_PATH &&
564 DevicePathSubType(node) == MEDIA_CDROM_DP) {
568 /* cd drive without the media. */
569 if (cd->pd_blkio->Media->RemovableMedia &&
570 !cd->pd_blkio->Media->MediaPresent) {
578 * Test if pd is parent for device.
581 efipart_testchild(pdinfo_t *dev, pdinfo_t *pd)
583 /* device with no parent. */
584 if (dev->pd_parent == NULL)
587 if (efi_devpath_match(dev->pd_parent->pd_devpath, pd->pd_devpath)) {
598 while ((cd = efipart_get_pd(&pdinfo, efipart_testcd, NULL)) != NULL)
599 efipart_cdinfo_add(cd);
601 /* Find all children of CD devices we did add above. */
602 STAILQ_FOREACH(cd, &cdinfo, pd_link) {
605 for (child = efipart_get_pd(&pdinfo, efipart_testchild, cd);
607 child = efipart_get_pd(&pdinfo, efipart_testchild, cd))
608 efipart_cdinfo_add(child);
610 bcache_add_dev(efiblk_pdinfo_count(&cdinfo));
615 efipart_hdinfo_add_node(pdinfo_t *hd, EFI_DEVICE_PATH *node)
617 pdinfo_t *parent, *ptr;
622 parent = hd->pd_parent;
624 * If the node is not MEDIA_HARDDRIVE_DP, it is sub-partition.
625 * This can happen with Vendor nodes, and since we do not know
626 * the more about those nodes, we just count them.
628 if (DevicePathSubType(node) != MEDIA_HARDDRIVE_DP) {
629 ptr = STAILQ_LAST(&parent->pd_part, pdinfo, pd_link);
631 hd->pd_unit = ptr->pd_unit + 1;
635 hd->pd_unit = ((HARDDRIVE_DEVICE_PATH *)node)->PartitionNumber;
638 hd->pd_devsw = &efipart_hddev;
639 STAILQ_INSERT_TAIL(&parent->pd_part, hd, pd_link);
643 * The MEDIA_FILEPATH_DP has device name.
644 * From U-Boot sources it looks like names are in the form
645 * of typeN:M, where type is interface type, N is disk id
646 * and M is partition id.
649 efipart_hdinfo_add_filepath(pdinfo_t *hd, FILEPATH_DEVICE_PATH *node)
655 last = STAILQ_LAST(&hdinfo, pdinfo, pd_link);
657 hd->pd_unit = last->pd_unit + 1;
661 /* FILEPATH_DEVICE_PATH has 0 terminated string */
662 len = ucs2len(node->PathName);
663 if ((pathname = malloc(len + 1)) == NULL) {
664 printf("Failed to add disk, out of memory\n");
668 cpy16to8(node->PathName, pathname, len + 1);
669 p = strchr(pathname, ':');
672 * Assume we are receiving handles in order, first disk handle,
673 * then partitions for this disk. If this assumption proves
674 * false, this code would need update.
676 if (p == NULL) { /* no colon, add the disk */
677 hd->pd_devsw = &efipart_hddev;
678 STAILQ_INSERT_TAIL(&hdinfo, hd, pd_link);
682 p++; /* skip the colon */
684 hd->pd_unit = (int)strtol(p, NULL, 0);
686 printf("Bad unit number for partition \"%s\"\n", pathname);
693 * We should have disk registered, if not, we are receiving
694 * handles out of order, and this code should be reworked
695 * to create "blank" disk for partition, and to find the
696 * disk based on PathName compares.
699 printf("BUG: No disk for partition \"%s\"\n", pathname);
704 /* Add the partition. */
705 hd->pd_parent = last;
706 hd->pd_devsw = &efipart_hddev;
707 STAILQ_INSERT_TAIL(&last->pd_part, hd, pd_link);
712 efipart_hdinfo_add(pdinfo_t *hd)
714 pdinfo_t *parent, *pd, *last;
715 EFI_DEVICE_PATH *node;
720 parent = hd->pd_parent;
721 /* Make sure we have parent added */
722 efipart_hdinfo_add(parent);
724 STAILQ_FOREACH(pd, &pdinfo, pd_link) {
725 if (efi_devpath_match(pd->pd_devpath, hd->pd_devpath)) {
726 STAILQ_REMOVE(&pdinfo, hd, pdinfo, pd_link);
731 /* This device is already added. */
735 if ((node = efi_devpath_last_node(hd->pd_devpath)) == NULL)
738 if (DevicePathType(node) == MEDIA_DEVICE_PATH &&
739 DevicePathSubType(node) == MEDIA_FILEPATH_DP) {
740 efipart_hdinfo_add_filepath(hd,
741 (FILEPATH_DEVICE_PATH *)node);
745 if (parent != NULL) {
746 efipart_hdinfo_add_node(hd, node);
750 last = STAILQ_LAST(&hdinfo, pdinfo, pd_link);
752 hd->pd_unit = last->pd_unit + 1;
757 hd->pd_devsw = &efipart_hddev;
758 STAILQ_INSERT_TAIL(&hdinfo, hd, pd_link);
762 efipart_testhd(pdinfo_t *hd, pdinfo_t *data __unused)
764 if (efipart_testfd(hd, NULL))
767 if (efipart_testcd(hd, NULL))
770 /* Anything else must be HD. */
779 while ((hd = efipart_get_pd(&pdinfo, efipart_testhd, NULL)) != NULL)
780 efipart_hdinfo_add(hd);
782 bcache_add_dev(efiblk_pdinfo_count(&hdinfo));
787 efipart_print_common(struct devsw *dev, pdinfo_list_t *pdlist, int verbose)
795 struct disk_devdesc pd_dev;
798 if (STAILQ_EMPTY(pdlist))
801 printf("%s devices:", dev->dv_name);
802 if ((ret = pager_output("\n")) != 0)
805 STAILQ_FOREACH(pd, pdlist, pd_link) {
807 if (verbose) { /* Output the device path. */
808 text = efi_devpath_name(efi_lookup_devpath(h));
811 efi_free_devpath_name(text);
812 if ((ret = pager_output("\n")) != 0)
816 snprintf(line, sizeof(line),
817 " %s%d", dev->dv_name, pd->pd_unit);
819 status = OpenProtocolByHandle(h, &blkio_guid, (void **)&blkio);
820 if (!EFI_ERROR(status)) {
822 blkio->Media->LastBlock == 0? 0:
823 (unsigned long long) (blkio->Media->LastBlock + 1));
824 if (blkio->Media->LastBlock != 0) {
825 printf(" X %u", blkio->Media->BlockSize);
828 if (blkio->Media->MediaPresent) {
829 if (blkio->Media->RemovableMedia)
830 printf(" (removable)");
832 printf(" (no media)");
834 if ((ret = pager_output("\n")) != 0)
836 if (!blkio->Media->MediaPresent)
839 pd->pd_blkio = blkio;
840 pd_dev.dd.d_dev = dev;
841 pd_dev.dd.d_unit = pd->pd_unit;
842 pd_dev.d_slice = D_SLICENONE;
843 pd_dev.d_partition = D_PARTNONE;
844 ret = disk_open(&pd_dev, blkio->Media->BlockSize *
845 (blkio->Media->LastBlock + 1),
846 blkio->Media->BlockSize);
848 ret = disk_print(&pd_dev, line, verbose);
853 /* Do not fail from disk_open() */
857 if ((ret = pager_output("\n")) != 0)
865 efipart_printfd(int verbose)
867 return (efipart_print_common(&efipart_fddev, &fdinfo, verbose));
871 efipart_printcd(int verbose)
873 return (efipart_print_common(&efipart_cddev, &cdinfo, verbose));
877 efipart_printhd(int verbose)
879 return (efipart_print_common(&efipart_hddev, &hdinfo, verbose));
883 efipart_open(struct open_file *f, ...)
886 struct disk_devdesc *dev;
892 dev = va_arg(args, struct disk_devdesc *);
897 pd = efiblk_get_pdinfo((struct devdesc *)dev);
901 if (pd->pd_blkio == NULL) {
902 status = OpenProtocolByHandle(pd->pd_handle, &blkio_guid,
903 (void **)&pd->pd_blkio);
904 if (EFI_ERROR(status))
905 return (efi_status_to_errno(status));
908 blkio = pd->pd_blkio;
909 if (!blkio->Media->MediaPresent)
913 if (pd->pd_bcache == NULL)
914 pd->pd_bcache = bcache_allocate();
916 if (dev->dd.d_dev->dv_type == DEVT_DISK) {
920 blkio->Media->BlockSize * (blkio->Media->LastBlock + 1),
921 blkio->Media->BlockSize);
924 if (pd->pd_open == 0) {
926 bcache_free(pd->pd_bcache);
927 pd->pd_bcache = NULL;
936 efipart_close(struct open_file *f)
938 struct disk_devdesc *dev;
941 dev = (struct disk_devdesc *)(f->f_devdata);
945 pd = efiblk_get_pdinfo((struct devdesc *)dev);
950 if (pd->pd_open == 0) {
952 bcache_free(pd->pd_bcache);
953 pd->pd_bcache = NULL;
955 if (dev->dd.d_dev->dv_type == DEVT_DISK)
956 return (disk_close(dev));
961 efipart_ioctl(struct open_file *f, u_long cmd, void *data)
963 struct disk_devdesc *dev;
967 dev = (struct disk_devdesc *)(f->f_devdata);
971 pd = efiblk_get_pdinfo((struct devdesc *)dev);
975 if (dev->dd.d_dev->dv_type == DEVT_DISK) {
976 rc = disk_ioctl(dev, cmd, data);
982 case DIOCGSECTORSIZE:
983 *(u_int *)data = pd->pd_blkio->Media->BlockSize;
986 *(uint64_t *)data = pd->pd_blkio->Media->BlockSize *
987 (pd->pd_blkio->Media->LastBlock + 1);
997 * efipart_readwrite()
998 * Internal equivalent of efipart_strategy(), which operates on the
999 * media-native block size. This function expects all I/O requests
1000 * to be within the media size and returns an error if such is not
1004 efipart_readwrite(EFI_BLOCK_IO *blkio, int rw, daddr_t blk, daddr_t nblks,
1011 if (blk < 0 || blk > blkio->Media->LastBlock)
1013 if ((blk + nblks - 1) > blkio->Media->LastBlock)
1016 switch (rw & F_MASK) {
1018 status = blkio->ReadBlocks(blkio, blkio->Media->MediaId, blk,
1019 nblks * blkio->Media->BlockSize, buf);
1022 if (blkio->Media->ReadOnly)
1024 status = blkio->WriteBlocks(blkio, blkio->Media->MediaId, blk,
1025 nblks * blkio->Media->BlockSize, buf);
1031 if (EFI_ERROR(status)) {
1032 printf("%s: rw=%d, blk=%ju size=%ju status=%lu\n", __func__, rw,
1033 blk, nblks, EFI_ERROR_CODE(status));
1035 return (efi_status_to_errno(status));
1039 efipart_strategy(void *devdata, int rw, daddr_t blk, size_t size,
1040 char *buf, size_t *rsize)
1042 struct bcache_devdata bcd;
1043 struct disk_devdesc *dev;
1046 dev = (struct disk_devdesc *)devdata;
1050 pd = efiblk_get_pdinfo((struct devdesc *)dev);
1054 if (pd->pd_blkio->Media->RemovableMedia &&
1055 !pd->pd_blkio->Media->MediaPresent)
1058 bcd.dv_strategy = efipart_realstrategy;
1059 bcd.dv_devdata = devdata;
1060 bcd.dv_cache = pd->pd_bcache;
1062 if (dev->dd.d_dev->dv_type == DEVT_DISK) {
1065 offset = dev->d_offset * pd->pd_blkio->Media->BlockSize;
1067 return (bcache_strategy(&bcd, rw, blk + offset,
1070 return (bcache_strategy(&bcd, rw, blk, size, buf, rsize));
1074 efipart_realstrategy(void *devdata, int rw, daddr_t blk, size_t size,
1075 char *buf, size_t *rsize)
1077 struct disk_devdesc *dev = (struct disk_devdesc *)devdata;
1079 EFI_BLOCK_IO *blkio;
1080 uint64_t off, disk_blocks, d_offset = 0;
1082 size_t blkoff, blksz, bio_size;
1086 uint64_t diskend, readstart;
1088 if (dev == NULL || blk < 0)
1091 pd = efiblk_get_pdinfo((struct devdesc *)dev);
1095 blkio = pd->pd_blkio;
1099 if (size == 0 || (size % 512) != 0)
1104 * Get disk blocks, this value is either for whole disk or for
1108 if (dev->dd.d_dev->dv_type == DEVT_DISK) {
1109 if (disk_ioctl(dev, DIOCGMEDIASIZE, &disk_blocks) == 0) {
1110 /* DIOCGMEDIASIZE does return bytes. */
1111 disk_blocks /= blkio->Media->BlockSize;
1113 d_offset = dev->d_offset;
1115 if (disk_blocks == 0)
1116 disk_blocks = blkio->Media->LastBlock + 1 - d_offset;
1118 /* make sure we don't read past disk end */
1119 if ((off + size) / blkio->Media->BlockSize > d_offset + disk_blocks) {
1120 diskend = d_offset + disk_blocks;
1121 readstart = off / blkio->Media->BlockSize;
1123 if (diskend <= readstart) {
1129 size = diskend - readstart;
1130 size = size * blkio->Media->BlockSize;
1134 /* Do we need bounce buffer? */
1135 if ((size % blkio->Media->BlockSize == 0) &&
1136 (off % blkio->Media->BlockSize == 0))
1139 /* Do we have IO alignment requirement? */
1140 ioalign = blkio->Media->IoAlign;
1144 if (ioalign > 1 && (uintptr_t)buf != roundup2((uintptr_t)buf, ioalign))
1148 for (bio_size = BIO_BUFFER_SIZE; bio_size > 0;
1149 bio_size -= blkio->Media->BlockSize) {
1150 blkbuf = memalign(ioalign, bio_size);
1166 blk = off / blkio->Media->BlockSize;
1167 blkoff = off % blkio->Media->BlockSize;
1170 size_t x = min(size, bio_size);
1172 if (x < blkio->Media->BlockSize)
1175 x /= blkio->Media->BlockSize;
1177 switch (rw & F_MASK) {
1179 blksz = blkio->Media->BlockSize * x - blkoff;
1183 rc = efipart_readwrite(blkio, rw, blk, x, blkbuf);
1188 bcopy(blkbuf + blkoff, buf, blksz);
1194 * We got offset to sector, read 1 sector to
1198 blksz = blkio->Media->BlockSize - blkoff;
1199 blksz = min(blksz, size);
1200 rc = efipart_readwrite(blkio, F_READ, blk, x,
1202 } else if (size < blkio->Media->BlockSize) {
1204 * The remaining block is not full
1205 * sector. Read 1 sector to blkbuf.
1209 rc = efipart_readwrite(blkio, F_READ, blk, x,
1212 /* We can write full sector(s). */
1213 blksz = blkio->Media->BlockSize * x;
1219 * Put your Data In, Put your Data out,
1220 * Put your Data In, and shake it all about
1223 bcopy(buf, blkbuf + blkoff, blksz);
1224 rc = efipart_readwrite(blkio, F_WRITE, blk, x, blkbuf);