Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxgrafted

Pull I3C updates from Alexandre Belloni:
 "A new driver this cycle, for the AMD AXI I3C controller.

  There are also new features such as IBI wakeup support, SETAASA device
  discovery and ACPI support for the the DAA methods, meaning we can now
  communicate with the SPD devices on DDR5 modules.

  New driver:
   - AMD AXI I3C master controller

  Subsystem:
   - I3C Common Command Code (CCC) handling improvements, especially
     around GET CCCs
   - SETAASA device discovery support
   - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
     well as I2C devices on I3C bus
   - IBI-based wakeup support

  Drivers:
   - dw: SETAASA support
   - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
     controller support, PIO queue management support for HCI v1.2
   - renesas: improve suspend to RAM support, add runtime PM support"

* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
  i3c: dw: reduce do_daa time if there's no client
  i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
  i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
  i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
  i3c: dw: rename "pclk" to "apb" to match dt-binding
  i3c: dw: make struct dw_i3c_cmd smaller
  i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
  i3c: renesas: Don't register devices when ENTDAA times out
  i3c: master: dw-i3c-master: fix OD timing for first broadcast
  i3c: mipi-i3c-hci: Advertise IBI wakeup capability
  i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
  i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
  i3c: master: Reject IBI requests from non-IBI-capable devices
  i3c: master: Add helper to query bus wakeup requirements
  i3c: master: Report wakeup events for IBIs
  i3c: master: Support IBI-based wakeup capability
  i3c: master: Fix potential UAF in i3c_device_match()
  i3c: master: Fix potential UAF in i3c_device_uevent()
  i3c: Make dev->desc locking assumptions explicit
  i3c: master: Fix use-after-free of master->this
  ...

1 files changed, 340 insertions, 0 deletions

diff --git a/fs/udf/partition.c b/fs/udf/partition.c
new file mode 100644
index 000000000..ad8dcedca
--- /dev/null
+++ b/fs/udf/partition.c
@@ -0,0 +1,340 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * partition.c
+ *
+ * PURPOSE
+ *      Partition handling routines for the OSTA-UDF(tm) filesystem.
+ *
+ * COPYRIGHT
+ *  (C) 1998-2001 Ben Fennema
+ *
+ * HISTORY
+ *
+ * 12/06/98 blf  Created file.
+ *
+ */
+
+#include "udfdecl.h"
+#include "udf_sb.h"
+#include "udf_i.h"
+
+#include <linux/fs.h>
+#include <linux/string.h>
+#include <linux/mutex.h>
+
+uint32_t udf_get_pblock(struct super_block *sb, uint32_t block,
+			uint16_t partition, uint32_t offset)
+{
+	struct udf_sb_info *sbi = UDF_SB(sb);
+	struct udf_part_map *map;
+	if (partition >= sbi->s_partitions) {
+		udf_debug("block=%u, partition=%u, offset=%u: invalid partition\n",
+			  block, partition, offset);
+		return 0xFFFFFFFF;
+	}
+	map = &sbi->s_partmaps[partition];
+	if (map->s_partition_func)
+		return map->s_partition_func(sb, block, partition, offset);
+	else
+		return map->s_partition_root + block + offset;
+}
+
+uint32_t udf_get_pblock_virt15(struct super_block *sb, uint32_t block,
+			       uint16_t partition, uint32_t offset)
+{
+	struct buffer_head *bh = NULL;
+	uint32_t newblock;
+	uint32_t index;
+	uint32_t loc;
+	struct udf_sb_info *sbi = UDF_SB(sb);
+	struct udf_part_map *map;
+	struct udf_virtual_data *vdata;
+	struct udf_inode_info *iinfo = UDF_I(sbi->s_vat_inode);
+	int err;
+
+	map = &sbi->s_partmaps[partition];
+	vdata = &map->s_type_specific.s_virtual;
+
+	if (block >= vdata->s_num_entries) {
+		udf_debug("Trying to access block beyond end of VAT (%u max %u)\n",
+			  block, vdata->s_num_entries);
+		return 0xFFFFFFFF;
+	}
+
+	if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
+		loc = le32_to_cpu(((__le32 *)(iinfo->i_data +
+			vdata->s_start_offset))[block]);
+		goto translate;
+	}
+	index = (sb->s_blocksize - vdata->s_start_offset) / sizeof(uint32_t);
+	if (block >= index) {
+		block -= index;
+		newblock = 1 + (block / (sb->s_blocksize / sizeof(uint32_t)));
+		index = block % (sb->s_blocksize / sizeof(uint32_t));
+	} else {
+		newblock = 0;
+		index = vdata->s_start_offset / sizeof(uint32_t) + block;
+	}
+
+	bh = udf_bread(sbi->s_vat_inode, newblock, 0, &err);
+	if (!bh) {
+		udf_debug("get_pblock(UDF_VIRTUAL_MAP:%p,%u,%u)\n",
+			  sb, block, partition);
+		return 0xFFFFFFFF;
+	}
+
+	loc = le32_to_cpu(((__le32 *)bh->b_data)[index]);
+
+	brelse(bh);
+
+translate:
+	if (iinfo->i_location.partitionReferenceNum == partition) {
+		udf_debug("recursive call to udf_get_pblock!\n");
+		return 0xFFFFFFFF;
+	}
+
+	return udf_get_pblock(sb, loc,
+			      iinfo->i_location.partitionReferenceNum,
+			      offset);
+}
+
+inline uint32_t udf_get_pblock_virt20(struct super_block *sb, uint32_t block,
+				      uint16_t partition, uint32_t offset)
+{
+	return udf_get_pblock_virt15(sb, block, partition, offset);
+}
+
+uint32_t udf_get_pblock_spar15(struct super_block *sb, uint32_t block,
+			       uint16_t partition, uint32_t offset)
+{
+	int i;
+	struct sparingTable *st = NULL;
+	struct udf_sb_info *sbi = UDF_SB(sb);
+	struct udf_part_map *map;
+	uint32_t packet;
+	struct udf_sparing_data *sdata;
+
+	map = &sbi->s_partmaps[partition];
+	sdata = &map->s_type_specific.s_sparing;
+	packet = (block + offset) & ~(sdata->s_packet_len - 1);
+
+	for (i = 0; i < 4; i++) {
+		if (sdata->s_spar_map[i] != NULL) {
+			st = (struct sparingTable *)
+					sdata->s_spar_map[i]->b_data;
+			break;
+		}
+	}
+
+	if (st) {
+		for (i = 0; i < le16_to_cpu(st->reallocationTableLen); i++) {
+			struct sparingEntry *entry = &st->mapEntry[i];
+			u32 origLoc = le32_to_cpu(entry->origLocation);
+			if (origLoc >= 0xFFFFFFF0)
+				break;
+			else if (origLoc == packet)
+				return le32_to_cpu(entry->mappedLocation) +
+					((block + offset) &
+						(sdata->s_packet_len - 1));
+			else if (origLoc > packet)
+				break;
+		}
+	}
+
+	return map->s_partition_root + block + offset;
+}
+
+int udf_relocate_blocks(struct super_block *sb, long old_block, long *new_block)
+{
+	struct udf_sparing_data *sdata;
+	struct sparingTable *st = NULL;
+	struct sparingEntry mapEntry;
+	uint32_t packet;
+	int i, j, k, l;
+	struct udf_sb_info *sbi = UDF_SB(sb);
+	u16 reallocationTableLen;
+	struct buffer_head *bh;
+	int ret = 0;
+
+	mutex_lock(&sbi->s_alloc_mutex);
+	for (i = 0; i < sbi->s_partitions; i++) {
+		struct udf_part_map *map = &sbi->s_partmaps[i];
+		if (old_block > map->s_partition_root &&
+		    old_block < map->s_partition_root + map->s_partition_len) {
+			sdata = &map->s_type_specific.s_sparing;
+			packet = (old_block - map->s_partition_root) &
+						~(sdata->s_packet_len - 1);
+
+			for (j = 0; j < 4; j++)
+				if (sdata->s_spar_map[j] != NULL) {
+					st = (struct sparingTable *)
+						sdata->s_spar_map[j]->b_data;
+					break;
+				}
+
+			if (!st) {
+				ret = 1;
+				goto out;
+			}
+
+			reallocationTableLen =
+					le16_to_cpu(st->reallocationTableLen);
+			for (k = 0; k < reallocationTableLen; k++) {
+				struct sparingEntry *entry = &st->mapEntry[k];
+				u32 origLoc = le32_to_cpu(entry->origLocation);
+
+				if (origLoc == 0xFFFFFFFF) {
+					for (; j < 4; j++) {
+						int len;
+						bh = sdata->s_spar_map[j];
+						if (!bh)
+							continue;
+
+						st = (struct sparingTable *)
+								bh->b_data;
+						entry->origLocation =
+							cpu_to_le32(packet);
+						len =
+						  sizeof(struct sparingTable) +
+						  reallocationTableLen *
+						  sizeof(struct sparingEntry);
+						udf_update_tag((char *)st, len);
+						mark_buffer_dirty(bh);
+					}
+					*new_block = le32_to_cpu(
+							entry->mappedLocation) +
+						     ((old_block -
+							map->s_partition_root) &
+						     (sdata->s_packet_len - 1));
+					ret = 0;
+					goto out;
+				} else if (origLoc == packet) {
+					*new_block = le32_to_cpu(
+							entry->mappedLocation) +
+						     ((old_block -
+							map->s_partition_root) &
+						     (sdata->s_packet_len - 1));
+					ret = 0;
+					goto out;
+				} else if (origLoc > packet)
+					break;
+			}
+
+			for (l = k; l < reallocationTableLen; l++) {
+				struct sparingEntry *entry = &st->mapEntry[l];
+				u32 origLoc = le32_to_cpu(entry->origLocation);
+
+				if (origLoc != 0xFFFFFFFF)
+					continue;
+
+				for (; j < 4; j++) {
+					bh = sdata->s_spar_map[j];
+					if (!bh)
+						continue;
+
+					st = (struct sparingTable *)bh->b_data;
+					mapEntry = st->mapEntry[l];
+					mapEntry.origLocation =
+							cpu_to_le32(packet);
+					memmove(&st->mapEntry[k + 1],
+						&st->mapEntry[k],
+						(l - k) *
+						sizeof(struct sparingEntry));
+					st->mapEntry[k] = mapEntry;
+					udf_update_tag((char *)st,
+						sizeof(struct sparingTable) +
+						reallocationTableLen *
+						sizeof(struct sparingEntry));
+					mark_buffer_dirty(bh);
+				}
+				*new_block =
+					le32_to_cpu(
+					      st->mapEntry[k].mappedLocation) +
+					((old_block - map->s_partition_root) &
+					 (sdata->s_packet_len - 1));
+				ret = 0;
+				goto out;
+			}
+
+			ret = 1;
+			goto out;
+		} /* if old_block */
+	}
+
+	if (i == sbi->s_partitions) {
+		/* outside of partitions */
+		/* for now, fail =) */
+		ret = 1;
+	}
+
+out:
+	mutex_unlock(&sbi->s_alloc_mutex);
+	return ret;
+}
+
+static uint32_t udf_try_read_meta(struct inode *inode, uint32_t block,
+					uint16_t partition, uint32_t offset)
+{
+	struct super_block *sb = inode->i_sb;
+	struct udf_part_map *map;
+	struct kernel_lb_addr eloc;
+	uint32_t elen;
+	sector_t ext_offset;
+	struct extent_position epos = {};
+	uint32_t phyblock;
+	int8_t etype;
+	int err = 0;
+
+	err = inode_bmap(inode, block, &epos, &eloc, &elen, &ext_offset, &etype);
+	if (err <= 0 || etype != (EXT_RECORDED_ALLOCATED >> 30))
+		phyblock = 0xFFFFFFFF;
+	else {
+		map = &UDF_SB(sb)->s_partmaps[partition];
+		/* map to sparable/physical partition desc */
+		phyblock = udf_get_pblock(sb, eloc.logicalBlockNum,
+			map->s_type_specific.s_metadata.s_phys_partition_ref,
+			ext_offset + offset);
+	}
+
+	brelse(epos.bh);
+	return phyblock;
+}
+
+uint32_t udf_get_pblock_meta25(struct super_block *sb, uint32_t block,
+				uint16_t partition, uint32_t offset)
+{
+	struct udf_sb_info *sbi = UDF_SB(sb);
+	struct udf_part_map *map;
+	struct udf_meta_data *mdata;
+	uint32_t retblk;
+	struct inode *inode;
+
+	udf_debug("READING from METADATA\n");
+
+	map = &sbi->s_partmaps[partition];
+	mdata = &map->s_type_specific.s_metadata;
+	inode = mdata->s_metadata_fe ? : mdata->s_mirror_fe;
+
+	if (!inode)
+		return 0xFFFFFFFF;
+
+	retblk = udf_try_read_meta(inode, block, partition, offset);
+	if (retblk == 0xFFFFFFFF && mdata->s_metadata_fe) {
+		udf_warn(sb, "error reading from METADATA, trying to read from MIRROR\n");
+		if (!(mdata->s_flags & MF_MIRROR_FE_LOADED)) {
+			mdata->s_mirror_fe = udf_find_metadata_inode_efe(sb,
+				mdata->s_mirror_file_loc,
+				mdata->s_phys_partition_ref);
+			if (IS_ERR(mdata->s_mirror_fe))
+				mdata->s_mirror_fe = NULL;
+			mdata->s_flags |= MF_MIRROR_FE_LOADED;
+		}
+
+		inode = mdata->s_mirror_fe;
+		if (!inode)
+			return 0xFFFFFFFF;
+		retblk = udf_try_read_meta(inode, block, partition, offset);
+	}
+
+	return retblk;
+}