/* * Copyright (c) 2010 Marcel Moolenaar * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include EFI_GUID gEfiBlockIoProtocolGuid = EFI_BLOCK_IO_PROTOCOL_GUID; EFI_GUID gEfiBlockIo2ProtocolGuid = EFI_BLOCK_IO2_PROTOCOL_GUID; typedef bool (*pd_test_cb_t)(pdinfo_t *, pdinfo_t *); static int efipart_initfd(void); static int efipart_initcd(void); static int efipart_inithd(void); static void efipart_cdinfo_add(pdinfo_t *); static int efipart_strategy(void *, int, daddr_t, size_t, char *, size_t *); static int efipart_realstrategy(void *, int, daddr_t, size_t, char *, size_t *); static int efipart_open(struct open_file *, ...); static int efipart_close(struct open_file *); static int efipart_ioctl(struct open_file *, unsigned long, void *); static int efipart_printfd(int); static int efipart_printcd(int); static int efipart_printhd(int); /* EISA PNP ID's for floppy controllers */ #define PNP0604 0x604 #define PNP0700 0x700 #define PNP0701 0x701 /* Bounce buffer max size */ #define BIO_BUFFER_SIZE 0x4000 struct devsw efipart_fddev = { .dv_name = "fd", .dv_type = DEVT_FD, .dv_init = efipart_initfd, .dv_strategy = efipart_strategy, .dv_open = efipart_open, .dv_close = efipart_close, .dv_ioctl = efipart_ioctl, .dv_print = efipart_printfd, .dv_cleanup = NULL }; struct devsw efipart_cddev = { .dv_name = "cd", .dv_type = DEVT_CD, .dv_init = efipart_initcd, .dv_strategy = efipart_strategy, .dv_open = efipart_open, .dv_close = efipart_close, .dv_ioctl = efipart_ioctl, .dv_print = efipart_printcd, .dv_cleanup = NULL }; struct devsw efipart_hddev = { .dv_name = "disk", .dv_type = DEVT_DISK, .dv_init = efipart_inithd, .dv_strategy = efipart_strategy, .dv_open = efipart_open, .dv_close = efipart_close, .dv_ioctl = efipart_ioctl, .dv_print = efipart_printhd, .dv_cleanup = NULL }; static pdinfo_list_t fdinfo = STAILQ_HEAD_INITIALIZER(fdinfo); static pdinfo_list_t cdinfo = STAILQ_HEAD_INITIALIZER(cdinfo); static pdinfo_list_t hdinfo = STAILQ_HEAD_INITIALIZER(hdinfo); /* * efipart_inithandles() is used to build up the pdinfo list from * block device handles. Then each devsw init callback is used to * pick items from pdinfo and move to proper device list. * In ideal world, we should end up with empty pdinfo once all * devsw initializers are called. */ static pdinfo_list_t pdinfo = STAILQ_HEAD_INITIALIZER(pdinfo); pdinfo_list_t * efiblk_get_pdinfo_list(struct devsw *dev) { if (dev->dv_type == DEVT_DISK) return (&hdinfo); if (dev->dv_type == DEVT_CD) return (&cdinfo); if (dev->dv_type == DEVT_FD) return (&fdinfo); return (NULL); } /* XXX this gets called way way too often, investigate */ pdinfo_t * efiblk_get_pdinfo(struct devdesc *dev) { pdinfo_list_t *pdi; pdinfo_t *pd = NULL; pdi = efiblk_get_pdinfo_list(dev->d_dev); if (pdi == NULL) return (pd); STAILQ_FOREACH(pd, pdi, pd_link) { if (pd->pd_unit == dev->d_unit) return (pd); } return (pd); } static bool same_handle(pdinfo_t *pd, EFI_HANDLE h) { return (pd->pd_handle == h || pd->pd_alias == h); } pdinfo_t * efiblk_get_pdinfo_by_handle(EFI_HANDLE h) { pdinfo_t *dp, *pp; /* * Check hard disks, then cd, then floppy */ STAILQ_FOREACH(dp, &hdinfo, pd_link) { if (same_handle(dp, h)) return (dp); STAILQ_FOREACH(pp, &dp->pd_part, pd_link) { if (same_handle(pp, h)) return (pp); } } STAILQ_FOREACH(dp, &cdinfo, pd_link) { if (same_handle(dp, h)) return (dp); STAILQ_FOREACH(pp, &dp->pd_part, pd_link) { if (same_handle(pp, h)) return (pp); } } STAILQ_FOREACH(dp, &fdinfo, pd_link) { if (same_handle(dp, h)) return (dp); } return (NULL); } static int efiblk_pdinfo_count(pdinfo_list_t *pdi) { pdinfo_t *pd; int i = 0; STAILQ_FOREACH(pd, pdi, pd_link) { i++; } return (i); } static pdinfo_t * efipart_find_parent(pdinfo_list_t *pdi, EFI_DEVICE_PATH *devpath) { pdinfo_t *pd; EFI_DEVICE_PATH *parent; /* We want to find direct parent */ parent = efi_devpath_trim(devpath); /* We should not get out of memory here but be careful. */ if (parent == NULL) return (NULL); STAILQ_FOREACH(pd, pdi, pd_link) { /* We must have exact match. */ if (efi_devpath_match(pd->pd_devpath, parent)) break; } free(parent); return (pd); } /* * Return true when we should ignore this device. */ static bool efipart_ignore_device(EFI_HANDLE h, EFI_BLOCK_IO *blkio, EFI_DEVICE_PATH *devpath) { EFI_DEVICE_PATH *node, *parent; /* * We assume the block size 512 or greater power of 2. * Also skip devices with block size > 64k (16 is max * ashift supported by zfs). * iPXE is known to insert stub BLOCK IO device with * BlockSize 1. */ if (blkio->Media->BlockSize < 512 || blkio->Media->BlockSize > (1 << 16) || !powerof2(blkio->Media->BlockSize)) { efi_close_devpath(h); return (true); } /* Allowed values are 0, 1 and power of 2. */ if (blkio->Media->IoAlign > 1 && !powerof2(blkio->Media->IoAlign)) { efi_close_devpath(h); return (true); } /* * With device tree setup: * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0) * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x1) * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x2) * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x3) * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x3)/CDROM.. * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x3)/CDROM.. * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x4) * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x5) * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x6) * PciRoot(0x0)/Pci(0x14,0x0)/USB(0x5,0)/USB(0x2,0x0)/Unit(0x7) * * In above exmple only Unit(0x3) has media, all other nodes are * missing media and should not be used. * * No media does not always mean there is no device, but in above * case, we can not really assume there is any device. * Therefore, if this node is USB, or this node is Unit (LUN) and * direct parent is USB and we have no media, we will ignore this * device. * * Variation of the same situation, but with SCSI devices: * PciRoot(0x0)/Pci(0x1a,0x0)/USB(0x1,0)/USB(0x3,0x0)/SCSI(0x0,0x1) * PciRoot(0x0)/Pci(0x1a,0x0)/USB(0x1,0)/USB(0x3,0x0)/SCSI(0x0,0x2) * PciRoot(0x0)/Pci(0x1a,0x0)/USB(0x1,0)/USB(0x3,0x0)/SCSI(0x0,0x3) * PciRoot(0x0)/Pci(0x1a,0x0)/USB(0x1,0)/USB(0x3,0x0)/SCSI(0x0,0x3)/CD.. * PciRoot(0x0)/Pci(0x1a,0x0)/USB(0x1,0)/USB(0x3,0x0)/SCSI(0x0,0x3)/CD.. * PciRoot(0x0)/Pci(0x1a,0x0)/USB(0x1,0)/USB(0x3,0x0)/SCSI(0x0,0x4) * * Here above the SCSI luns 1,2 and 4 have no media. */ /* Do not ignore device with media. */ if (blkio->Media->MediaPresent) return (false); node = efi_devpath_last_node(devpath); if (node == NULL) return (false); /* USB without media present */ if (DevicePathType(node) == MESSAGING_DEVICE_PATH && DevicePathSubType(node) == MSG_USB_DP) { efi_close_devpath(h); return (true); } parent = efi_devpath_trim(devpath); if (parent != NULL) { bool parent_is_usb = false; node = efi_devpath_last_node(parent); if (node == NULL) { free(parent); return (false); } if (DevicePathType(node) == MESSAGING_DEVICE_PATH && DevicePathSubType(node) == MSG_USB_DP) parent_is_usb = true; free(parent); node = efi_devpath_last_node(devpath); if (node == NULL) return (false); if (parent_is_usb && DevicePathType(node) == MESSAGING_DEVICE_PATH) { /* * no media, parent is USB and devicepath is * LUN or SCSI. */ if (DevicePathSubType(node) == MSG_DEVICE_LOGICAL_UNIT_DP || DevicePathSubType(node) == MSG_SCSI_DP) { efi_close_devpath(h); return (true); } } } return (false); } int efipart_inithandles(void) { uint_t i, nin; EFI_HANDLE *hin; EFI_DEVICE_PATH *devpath; EFI_BLOCK_IO *blkio; EFI_STATUS status; pdinfo_t *pd; if (!STAILQ_EMPTY(&pdinfo)) return (0); status = efi_get_protocol_handles(&gEfiBlockIoProtocolGuid, &nin, &hin); if (EFI_ERROR(status)) return (efi_status_to_errno(status)); #ifdef EFIPART_DEBUG printf("%s: Got %d BLOCK IO MEDIA handle(s)\n", __func__, nin); #endif for (i = 0; i < nin; i++) { /* * Get devpath and open protocol. * We should not get errors here */ if ((devpath = efi_lookup_devpath(hin[i])) == NULL) continue; status = OpenProtocolByHandle(hin[i], &gEfiBlockIoProtocolGuid, (void **)&blkio); if (EFI_ERROR(status)) { printf("error %lu\n", DECODE_ERROR(status)); continue; } if (efipart_ignore_device(hin[i], blkio, devpath)) continue; /* This is bad. */ if ((pd = calloc(1, sizeof (*pd))) == NULL) { printf("efipart_inithandles: Out of memory.\n"); free(hin); return (ENOMEM); } STAILQ_INIT(&pd->pd_part); pd->pd_handle = hin[i]; pd->pd_devpath = devpath; pd->pd_blkio = blkio; STAILQ_INSERT_TAIL(&pdinfo, pd, pd_link); } /* * Walk pdinfo and set parents based on device path. */ STAILQ_FOREACH(pd, &pdinfo, pd_link) { pd->pd_parent = efipart_find_parent(&pdinfo, pd->pd_devpath); } free(hin); return (0); } /* * Get node identified by pd_test() from plist. */ static pdinfo_t * efipart_get_pd(pdinfo_list_t *plist, pd_test_cb_t pd_test, pdinfo_t *data) { pdinfo_t *pd; STAILQ_FOREACH(pd, plist, pd_link) { if (pd_test(pd, data)) break; } return (pd); } static ACPI_HID_DEVICE_PATH * efipart_floppy(EFI_DEVICE_PATH *node) { ACPI_HID_DEVICE_PATH *acpi; if (DevicePathType(node) == ACPI_DEVICE_PATH && DevicePathSubType(node) == ACPI_DP) { acpi = (ACPI_HID_DEVICE_PATH *) node; if (acpi->HID == EISA_PNP_ID(PNP0604) || acpi->HID == EISA_PNP_ID(PNP0700) || acpi->HID == EISA_PNP_ID(PNP0701)) { return (acpi); } } return (NULL); } static bool efipart_testfd(pdinfo_t *fd, pdinfo_t *data __unused) { EFI_DEVICE_PATH *node; node = efi_devpath_last_node(fd->pd_devpath); if (node == NULL) return (false); if (efipart_floppy(node) != NULL) return (true); return (false); } static int efipart_initfd(void) { EFI_DEVICE_PATH *node; ACPI_HID_DEVICE_PATH *acpi; pdinfo_t *parent, *fd; while ((fd = efipart_get_pd(&pdinfo, efipart_testfd, NULL)) != NULL) { if ((node = efi_devpath_last_node(fd->pd_devpath)) == NULL) continue; if ((acpi = efipart_floppy(node)) == NULL) continue; STAILQ_REMOVE(&pdinfo, fd, pdinfo, pd_link); parent = fd->pd_parent; if (parent != NULL) { STAILQ_REMOVE(&pdinfo, parent, pdinfo, pd_link); parent->pd_alias = fd->pd_handle; parent->pd_unit = acpi->UID; free(fd); fd = parent; } else { fd->pd_unit = acpi->UID; } fd->pd_devsw = &efipart_fddev; STAILQ_INSERT_TAIL(&fdinfo, fd, pd_link); } bcache_add_dev(efiblk_pdinfo_count(&fdinfo)); return (0); } /* * Add or update entries with new handle data. */ static void efipart_cdinfo_add(pdinfo_t *cd) { pdinfo_t *parent, *pd, *last; if (cd == NULL) return; parent = cd->pd_parent; /* Make sure we have parent added */ efipart_cdinfo_add(parent); STAILQ_FOREACH(pd, &pdinfo, pd_link) { if (efi_devpath_match(pd->pd_devpath, cd->pd_devpath)) { STAILQ_REMOVE(&pdinfo, cd, pdinfo, pd_link); break; } } if (pd == NULL) { /* This device is already added. */ return; } if (parent != NULL) { last = STAILQ_LAST(&parent->pd_part, pdinfo, pd_link); if (last != NULL) cd->pd_unit = last->pd_unit + 1; else cd->pd_unit = 0; cd->pd_devsw = &efipart_cddev; STAILQ_INSERT_TAIL(&parent->pd_part, cd, pd_link); return; } last = STAILQ_LAST(&cdinfo, pdinfo, pd_link); if (last != NULL) cd->pd_unit = last->pd_unit + 1; else cd->pd_unit = 0; cd->pd_devsw = &efipart_cddev; STAILQ_INSERT_TAIL(&cdinfo, cd, pd_link); } static bool efipart_testcd(pdinfo_t *cd, pdinfo_t *data __unused) { EFI_DEVICE_PATH *node; node = efi_devpath_last_node(cd->pd_devpath); if (node == NULL) return (false); if (efipart_floppy(node) != NULL) return (false); if (DevicePathType(node) == MEDIA_DEVICE_PATH && DevicePathSubType(node) == MEDIA_CDROM_DP) { return (true); } /* cd drive without the media. */ if (cd->pd_blkio->Media->RemovableMedia && !cd->pd_blkio->Media->MediaPresent) { return (true); } return (false); } /* * Test if pd is parent for device. */ static bool efipart_testchild(pdinfo_t *dev, pdinfo_t *pd) { /* device with no parent. */ if (dev->pd_parent == NULL) return (false); if (efi_devpath_match(dev->pd_parent->pd_devpath, pd->pd_devpath)) { return (true); } return (false); } static int efipart_initcd(void) { pdinfo_t *cd; while ((cd = efipart_get_pd(&pdinfo, efipart_testcd, NULL)) != NULL) efipart_cdinfo_add(cd); /* Find all children of CD devices we did add above. */ STAILQ_FOREACH(cd, &cdinfo, pd_link) { pdinfo_t *child; for (child = efipart_get_pd(&pdinfo, efipart_testchild, cd); child != NULL; child = efipart_get_pd(&pdinfo, efipart_testchild, cd)) efipart_cdinfo_add(child); } bcache_add_dev(efiblk_pdinfo_count(&cdinfo)); return (0); } static void efipart_hdinfo_add_node(pdinfo_t *hd, EFI_DEVICE_PATH *node) { pdinfo_t *parent, *ptr; if (node == NULL) return; parent = hd->pd_parent; /* * If the node is not MEDIA_HARDDRIVE_DP, it is sub-partition. * This can happen with Vendor nodes, and since we do not know * the more about those nodes, we just count them. */ if (DevicePathSubType(node) != MEDIA_HARDDRIVE_DP) { ptr = STAILQ_LAST(&parent->pd_part, pdinfo, pd_link); if (ptr != NULL) hd->pd_unit = ptr->pd_unit + 1; else hd->pd_unit = 0; } else { hd->pd_unit = ((HARDDRIVE_DEVICE_PATH *)node)->PartitionNumber; } hd->pd_devsw = &efipart_hddev; STAILQ_INSERT_TAIL(&parent->pd_part, hd, pd_link); } /* * The MEDIA_FILEPATH_DP has device name. * From U-Boot sources it looks like names are in the form * of typeN:M, where type is interface type, N is disk id * and M is partition id. */ static void efipart_hdinfo_add_filepath(pdinfo_t *hd, FILEPATH_DEVICE_PATH *node) { char *pathname, *p; int len; pdinfo_t *last; last = STAILQ_LAST(&hdinfo, pdinfo, pd_link); if (last != NULL) hd->pd_unit = last->pd_unit + 1; else hd->pd_unit = 0; /* FILEPATH_DEVICE_PATH has 0 terminated string */ len = ucs2len(node->PathName); if ((pathname = malloc(len + 1)) == NULL) { printf("Failed to add disk, out of memory\n"); free(hd); return; } cpy16to8(node->PathName, pathname, len + 1); p = strchr(pathname, ':'); /* * Assume we are receiving handles in order, first disk handle, * then partitions for this disk. If this assumption proves * false, this code would need update. */ if (p == NULL) { /* no colon, add the disk */ hd->pd_devsw = &efipart_hddev; STAILQ_INSERT_TAIL(&hdinfo, hd, pd_link); free(pathname); return; } p++; /* skip the colon */ errno = 0; hd->pd_unit = (int)strtol(p, NULL, 0); if (errno != 0) { printf("Bad unit number for partition \"%s\"\n", pathname); free(pathname); free(hd); return; } /* * We should have disk registered, if not, we are receiving * handles out of order, and this code should be reworked * to create "blank" disk for partition, and to find the * disk based on PathName compares. */ if (last == NULL) { printf("BUG: No disk for partition \"%s\"\n", pathname); free(pathname); free(hd); return; } /* Add the partition. */ hd->pd_parent = last; hd->pd_devsw = &efipart_hddev; STAILQ_INSERT_TAIL(&last->pd_part, hd, pd_link); free(pathname); } static void efipart_hdinfo_add(pdinfo_t *hd) { pdinfo_t *parent, *pd, *last; EFI_DEVICE_PATH *node; if (hd == NULL) return; parent = hd->pd_parent; /* Make sure we have parent added */ efipart_hdinfo_add(parent); STAILQ_FOREACH(pd, &pdinfo, pd_link) { if (efi_devpath_match(pd->pd_devpath, hd->pd_devpath)) { STAILQ_REMOVE(&pdinfo, hd, pdinfo, pd_link); break; } } if (pd == NULL) { /* This device is already added. */ return; } if ((node = efi_devpath_last_node(hd->pd_devpath)) == NULL) return; if (DevicePathType(node) == MEDIA_DEVICE_PATH && DevicePathSubType(node) == MEDIA_FILEPATH_DP) { efipart_hdinfo_add_filepath(hd, (FILEPATH_DEVICE_PATH *)node); return; } if (parent != NULL) { efipart_hdinfo_add_node(hd, node); return; } last = STAILQ_LAST(&hdinfo, pdinfo, pd_link); if (last != NULL) hd->pd_unit = last->pd_unit + 1; else hd->pd_unit = 0; /* Add the disk. */ hd->pd_devsw = &efipart_hddev; STAILQ_INSERT_TAIL(&hdinfo, hd, pd_link); } static bool efipart_testhd(pdinfo_t *hd, pdinfo_t *data __unused) { if (efipart_testfd(hd, NULL)) return (false); if (efipart_testcd(hd, NULL)) return (false); /* Anything else must be HD. */ return (true); } static int efipart_inithd(void) { pdinfo_t *hd; while ((hd = efipart_get_pd(&pdinfo, efipart_testhd, NULL)) != NULL) efipart_hdinfo_add(hd); bcache_add_dev(efiblk_pdinfo_count(&hdinfo)); return (0); } static int efipart_print_common(struct devsw *dev, pdinfo_list_t *pdlist, int verbose) { int ret = 0; EFI_BLOCK_IO *blkio; EFI_STATUS status; EFI_HANDLE h; pdinfo_t *pd; CHAR16 *text; struct disk_devdesc pd_dev; char line[80]; if (STAILQ_EMPTY(pdlist)) return (0); printf("%s devices:", dev->dv_name); if ((ret = pager_output("\n")) != 0) return (ret); STAILQ_FOREACH(pd, pdlist, pd_link) { h = pd->pd_handle; if (verbose) { /* Output the device path. */ text = efi_devpath_name(efi_lookup_devpath(h)); if (text != NULL) { printf(" %S", text); efi_free_devpath_name(text); if ((ret = pager_output("\n")) != 0) break; } } snprintf(line, sizeof (line), " %s%d", dev->dv_name, pd->pd_unit); printf("%s:", line); status = OpenProtocolByHandle(h, &gEfiBlockIoProtocolGuid, (void **)&blkio); if (!EFI_ERROR(status)) { printf(" %llu", blkio->Media->LastBlock == 0? 0: (unsigned long long) (blkio->Media->LastBlock + 1)); if (blkio->Media->LastBlock != 0) { printf(" X %u", blkio->Media->BlockSize); } printf(" blocks"); if (blkio->Media->MediaPresent) { if (blkio->Media->RemovableMedia) printf(" (removable)"); } else { printf(" (no media)"); } if ((ret = pager_output("\n")) != 0) break; if (!blkio->Media->MediaPresent) continue; pd->pd_blkio = blkio; pd_dev.dd.d_dev = dev; pd_dev.dd.d_unit = pd->pd_unit; pd_dev.d_slice = D_SLICENONE; pd_dev.d_partition = D_PARTNONE; ret = disk_open(&pd_dev, blkio->Media->BlockSize * (blkio->Media->LastBlock + 1), blkio->Media->BlockSize); if (ret == 0) { ret = disk_print(&pd_dev, line, verbose); disk_close(&pd_dev); if (ret != 0) return (ret); } else { /* Do not fail from disk_open() */ ret = 0; } } else { if ((ret = pager_output("\n")) != 0) break; } } return (ret); } static int efipart_printfd(int verbose) { return (efipart_print_common(&efipart_fddev, &fdinfo, verbose)); } static int efipart_printcd(int verbose) { return (efipart_print_common(&efipart_cddev, &cdinfo, verbose)); } static int efipart_printhd(int verbose) { return (efipart_print_common(&efipart_hddev, &hdinfo, verbose)); } static int efipart_open(struct open_file *f, ...) { va_list args; struct disk_devdesc *dev; pdinfo_t *pd; EFI_BLOCK_IO *blkio; EFI_STATUS status; va_start(args, f); dev = va_arg(args, struct disk_devdesc *); va_end(args); if (dev == NULL) return (EINVAL); pd = efiblk_get_pdinfo((struct devdesc *)dev); if (pd == NULL) return (EIO); if (pd->pd_blkio == NULL) { status = OpenProtocolByHandle(pd->pd_handle, &gEfiBlockIoProtocolGuid, (void **)&pd->pd_blkio); if (EFI_ERROR(status)) return (efi_status_to_errno(status)); } blkio = pd->pd_blkio; if (!blkio->Media->MediaPresent) return (EAGAIN); pd->pd_open++; if (pd->pd_bcache == NULL) pd->pd_bcache = bcache_allocate(); if (dev->dd.d_dev->dv_type == DEVT_DISK) { int rc; rc = disk_open(dev, blkio->Media->BlockSize * (blkio->Media->LastBlock + 1), blkio->Media->BlockSize); if (rc != 0) { pd->pd_open--; if (pd->pd_open == 0) { pd->pd_blkio = NULL; bcache_free(pd->pd_bcache); pd->pd_bcache = NULL; } } return (rc); } return (0); } static int efipart_close(struct open_file *f) { struct disk_devdesc *dev; pdinfo_t *pd; dev = (struct disk_devdesc *)(f->f_devdata); if (dev == NULL) return (EINVAL); pd = efiblk_get_pdinfo((struct devdesc *)dev); if (pd == NULL) return (EINVAL); pd->pd_open--; if (pd->pd_open == 0) { pd->pd_blkio = NULL; bcache_free(pd->pd_bcache); pd->pd_bcache = NULL; } if (dev->dd.d_dev->dv_type == DEVT_DISK) return (disk_close(dev)); return (0); } static int efipart_ioctl(struct open_file *f, unsigned long cmd, void *data) { struct disk_devdesc *dev; pdinfo_t *pd; int rc; dev = (struct disk_devdesc *)(f->f_devdata); if (dev == NULL) return (EINVAL); pd = efiblk_get_pdinfo((struct devdesc *)dev); if (pd == NULL) return (EINVAL); if (dev->dd.d_dev->dv_type == DEVT_DISK) { rc = disk_ioctl(dev, cmd, data); if (rc != ENOTTY) return (rc); } switch (cmd) { case DIOCGSECTORSIZE: *(uint_t *)data = pd->pd_blkio->Media->BlockSize; break; case DIOCGMEDIASIZE: *(uint64_t *)data = pd->pd_blkio->Media->BlockSize * (pd->pd_blkio->Media->LastBlock + 1); break; default: return (ENOTTY); } return (0); } /* * efipart_readwrite() * Internal equivalent of efipart_strategy(), which operates on the * media-native block size. This function expects all I/O requests * to be within the media size and returns an error if such is not * the case. */ static int efipart_readwrite(EFI_BLOCK_IO *blkio, int rw, daddr_t blk, daddr_t nblks, char *buf) { EFI_STATUS status; if (blkio == NULL) return (ENXIO); if (blk < 0 || blk > blkio->Media->LastBlock) return (EIO); if ((blk + nblks - 1) > blkio->Media->LastBlock) return (EIO); switch (rw & F_MASK) { case F_READ: status = blkio->ReadBlocks(blkio, blkio->Media->MediaId, blk, nblks * blkio->Media->BlockSize, buf); break; case F_WRITE: if (blkio->Media->ReadOnly) return (EROFS); status = blkio->WriteBlocks(blkio, blkio->Media->MediaId, blk, nblks * blkio->Media->BlockSize, buf); break; default: return (ENOSYS); } if (EFI_ERROR(status)) { printf("%s: rw=%d, blk=%ju size=%ju status=%lu\n", __func__, rw, blk, nblks, DECODE_ERROR(status)); } return (efi_status_to_errno(status)); } static int efipart_strategy(void *devdata, int rw, daddr_t blk, size_t size, char *buf, size_t *rsize) { struct bcache_devdata bcd; struct disk_devdesc *dev; pdinfo_t *pd; dev = (struct disk_devdesc *)devdata; if (dev == NULL) return (EINVAL); pd = efiblk_get_pdinfo((struct devdesc *)dev); if (pd == NULL) return (EINVAL); if (pd->pd_blkio->Media->RemovableMedia && !pd->pd_blkio->Media->MediaPresent) return (ENXIO); bcd.dv_strategy = efipart_realstrategy; bcd.dv_devdata = devdata; bcd.dv_cache = pd->pd_bcache; if (dev->dd.d_dev->dv_type == DEVT_DISK) { daddr_t offset; offset = dev->d_offset * pd->pd_blkio->Media->BlockSize; offset /= 512; return (bcache_strategy(&bcd, rw, blk + offset, size, buf, rsize)); } return (bcache_strategy(&bcd, rw, blk, size, buf, rsize)); } static int efipart_realstrategy(void *devdata, int rw, daddr_t blk, size_t size, char *buf, size_t *rsize) { struct disk_devdesc *dev = (struct disk_devdesc *)devdata; pdinfo_t *pd; EFI_BLOCK_IO *blkio; uint64_t off, disk_blocks, d_offset = 0; char *blkbuf; size_t blkoff, blksz, bio_size; unsigned ioalign; bool need_buf; int rc; uint64_t diskend, readstart; if (dev == NULL || blk < 0) return (EINVAL); pd = efiblk_get_pdinfo((struct devdesc *)dev); if (pd == NULL) return (EINVAL); blkio = pd->pd_blkio; if (blkio == NULL) return (ENXIO); if (size == 0 || (size % 512) != 0) return (EIO); off = blk * 512; /* * Get disk blocks, this value is either for whole disk or for * partition. */ disk_blocks = 0; if (dev->dd.d_dev->dv_type == DEVT_DISK) { if (disk_ioctl(dev, DIOCGMEDIASIZE, &disk_blocks) == 0) { /* DIOCGMEDIASIZE does return bytes. */ disk_blocks /= blkio->Media->BlockSize; } d_offset = dev->d_offset; } if (disk_blocks == 0) disk_blocks = blkio->Media->LastBlock + 1 - d_offset; /* make sure we don't read past disk end */ if ((off + size) / blkio->Media->BlockSize > d_offset + disk_blocks) { diskend = d_offset + disk_blocks; readstart = off / blkio->Media->BlockSize; if (diskend <= readstart) { if (rsize != NULL) *rsize = 0; return (EIO); } size = diskend - readstart; size = size * blkio->Media->BlockSize; } need_buf = true; /* Do we need bounce buffer? */ if ((size % blkio->Media->BlockSize == 0) && (off % blkio->Media->BlockSize == 0)) need_buf = false; /* Do we have IO alignment requirement? */ ioalign = blkio->Media->IoAlign; if (ioalign == 0) ioalign++; if (ioalign > 1 && (uintptr_t)buf != roundup2((uintptr_t)buf, ioalign)) need_buf = true; if (need_buf) { for (bio_size = BIO_BUFFER_SIZE; bio_size > 0; bio_size -= blkio->Media->BlockSize) { blkbuf = memalign(ioalign, bio_size); if (blkbuf != NULL) break; } } else { blkbuf = buf; bio_size = size; } if (blkbuf == NULL) return (ENOMEM); if (rsize != NULL) *rsize = size; rc = 0; blk = off / blkio->Media->BlockSize; blkoff = off % blkio->Media->BlockSize; while (size > 0) { size_t x = min(size, bio_size); if (x < blkio->Media->BlockSize) x = 1; else x /= blkio->Media->BlockSize; switch (rw & F_MASK) { case F_READ: blksz = blkio->Media->BlockSize * x - blkoff; if (size < blksz) blksz = size; rc = efipart_readwrite(blkio, rw, blk, x, blkbuf); if (rc != 0) goto error; if (need_buf) bcopy(blkbuf + blkoff, buf, blksz); break; case F_WRITE: rc = 0; if (blkoff != 0) { /* * We got offset to sector, read 1 sector to * blkbuf. */ x = 1; blksz = blkio->Media->BlockSize - blkoff; blksz = min(blksz, size); rc = efipart_readwrite(blkio, F_READ, blk, x, blkbuf); } else if (size < blkio->Media->BlockSize) { /* * The remaining block is not full * sector. Read 1 sector to blkbuf. */ x = 1; blksz = size; rc = efipart_readwrite(blkio, F_READ, blk, x, blkbuf); } else { /* We can write full sector(s). */ blksz = blkio->Media->BlockSize * x; } if (rc != 0) goto error; /* * Put your Data In, Put your Data out, * Put your Data In, and shake it all about */ if (need_buf) bcopy(buf, blkbuf + blkoff, blksz); rc = efipart_readwrite(blkio, F_WRITE, blk, x, blkbuf); if (rc != 0) goto error; break; default: /* DO NOTHING */ rc = EROFS; goto error; } blkoff = 0; buf += blksz; size -= blksz; blk += x; } error: if (rsize != NULL) *rsize -= size; if (need_buf) free(blkbuf); return (rc); }