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, 240 insertions, 0 deletions

diff --git a/crypto/sha1.c b/crypto/sha1.c
new file mode 100644
index 000000000..4fbf61cf0
--- /dev/null
+++ b/crypto/sha1.c
@@ -0,0 +1,240 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Crypto API support for SHA-1 and HMAC-SHA1
+ *
+ * Copyright (c) Alan Smithee.
+ * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
+ * Copyright (c) Jean-Francois Dive <jef@linuxbe.org>
+ * Copyright 2025 Google LLC
+ */
+#include <crypto/internal/hash.h>
+#include <crypto/sha1.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+/*
+ * Export and import functions.  crypto_shash wants a particular format that
+ * matches that used by some legacy drivers.  It currently is the same as the
+ * library SHA context, except the value in bytecount must be block-aligned and
+ * the remainder must be stored in an extra u8 appended to the struct.
+ */
+
+#define SHA1_SHASH_STATE_SIZE (sizeof(struct sha1_ctx) + 1)
+static_assert(sizeof(struct sha1_ctx) == sizeof(struct sha1_state));
+static_assert(offsetof(struct sha1_ctx, state) == offsetof(struct sha1_state, state));
+static_assert(offsetof(struct sha1_ctx, bytecount) == offsetof(struct sha1_state, count));
+static_assert(offsetof(struct sha1_ctx, buf) == offsetof(struct sha1_state, buffer));
+
+static int __crypto_sha1_export(const struct sha1_ctx *ctx0, void *out)
+{
+	struct sha1_ctx ctx = *ctx0;
+	unsigned int partial;
+	u8 *p = out;
+
+	partial = ctx.bytecount % SHA1_BLOCK_SIZE;
+	ctx.bytecount -= partial;
+	memcpy(p, &ctx, sizeof(ctx));
+	p += sizeof(ctx);
+	*p = partial;
+	return 0;
+}
+
+static int __crypto_sha1_import(struct sha1_ctx *ctx, const void *in)
+{
+	const u8 *p = in;
+
+	memcpy(ctx, p, sizeof(*ctx));
+	p += sizeof(*ctx);
+	ctx->bytecount += *p;
+	return 0;
+}
+
+static int __crypto_sha1_export_core(const struct sha1_ctx *ctx, void *out)
+{
+	memcpy(out, ctx, offsetof(struct sha1_ctx, buf));
+	return 0;
+}
+
+static int __crypto_sha1_import_core(struct sha1_ctx *ctx, const void *in)
+{
+	memcpy(ctx, in, offsetof(struct sha1_ctx, buf));
+	return 0;
+}
+
+const u8 sha1_zero_message_hash[SHA1_DIGEST_SIZE] = {
+	0xda, 0x39, 0xa3, 0xee, 0x5e, 0x6b, 0x4b, 0x0d,
+	0x32, 0x55, 0xbf, 0xef, 0x95, 0x60, 0x18, 0x90,
+	0xaf, 0xd8, 0x07, 0x09
+};
+EXPORT_SYMBOL_GPL(sha1_zero_message_hash);
+
+#define SHA1_CTX(desc) ((struct sha1_ctx *)shash_desc_ctx(desc))
+
+static int crypto_sha1_init(struct shash_desc *desc)
+{
+	sha1_init(SHA1_CTX(desc));
+	return 0;
+}
+
+static int crypto_sha1_update(struct shash_desc *desc,
+			      const u8 *data, unsigned int len)
+{
+	sha1_update(SHA1_CTX(desc), data, len);
+	return 0;
+}
+
+static int crypto_sha1_final(struct shash_desc *desc, u8 *out)
+{
+	sha1_final(SHA1_CTX(desc), out);
+	return 0;
+}
+
+static int crypto_sha1_digest(struct shash_desc *desc,
+			      const u8 *data, unsigned int len, u8 *out)
+{
+	sha1(data, len, out);
+	return 0;
+}
+
+static int crypto_sha1_export(struct shash_desc *desc, void *out)
+{
+	return __crypto_sha1_export(SHA1_CTX(desc), out);
+}
+
+static int crypto_sha1_import(struct shash_desc *desc, const void *in)
+{
+	return __crypto_sha1_import(SHA1_CTX(desc), in);
+}
+
+static int crypto_sha1_export_core(struct shash_desc *desc, void *out)
+{
+	return __crypto_sha1_export_core(SHA1_CTX(desc), out);
+}
+
+static int crypto_sha1_import_core(struct shash_desc *desc, const void *in)
+{
+	return __crypto_sha1_import_core(SHA1_CTX(desc), in);
+}
+
+#define HMAC_SHA1_KEY(tfm) ((struct hmac_sha1_key *)crypto_shash_ctx(tfm))
+#define HMAC_SHA1_CTX(desc) ((struct hmac_sha1_ctx *)shash_desc_ctx(desc))
+
+static int crypto_hmac_sha1_setkey(struct crypto_shash *tfm,
+				   const u8 *raw_key, unsigned int keylen)
+{
+	hmac_sha1_preparekey(HMAC_SHA1_KEY(tfm), raw_key, keylen);
+	return 0;
+}
+
+static int crypto_hmac_sha1_init(struct shash_desc *desc)
+{
+	hmac_sha1_init(HMAC_SHA1_CTX(desc), HMAC_SHA1_KEY(desc->tfm));
+	return 0;
+}
+
+static int crypto_hmac_sha1_update(struct shash_desc *desc,
+				   const u8 *data, unsigned int len)
+{
+	hmac_sha1_update(HMAC_SHA1_CTX(desc), data, len);
+	return 0;
+}
+
+static int crypto_hmac_sha1_final(struct shash_desc *desc, u8 *out)
+{
+	hmac_sha1_final(HMAC_SHA1_CTX(desc), out);
+	return 0;
+}
+
+static int crypto_hmac_sha1_digest(struct shash_desc *desc,
+				   const u8 *data, unsigned int len, u8 *out)
+{
+	hmac_sha1(HMAC_SHA1_KEY(desc->tfm), data, len, out);
+	return 0;
+}
+
+static int crypto_hmac_sha1_export(struct shash_desc *desc, void *out)
+{
+	return __crypto_sha1_export(&HMAC_SHA1_CTX(desc)->sha_ctx, out);
+}
+
+static int crypto_hmac_sha1_import(struct shash_desc *desc, const void *in)
+{
+	struct hmac_sha1_ctx *ctx = HMAC_SHA1_CTX(desc);
+
+	ctx->ostate = HMAC_SHA1_KEY(desc->tfm)->ostate;
+	return __crypto_sha1_import(&ctx->sha_ctx, in);
+}
+
+static int crypto_hmac_sha1_export_core(struct shash_desc *desc, void *out)
+{
+	return __crypto_sha1_export_core(&HMAC_SHA1_CTX(desc)->sha_ctx, out);
+}
+
+static int crypto_hmac_sha1_import_core(struct shash_desc *desc, const void *in)
+{
+	struct hmac_sha1_ctx *ctx = HMAC_SHA1_CTX(desc);
+
+	ctx->ostate = HMAC_SHA1_KEY(desc->tfm)->ostate;
+	return __crypto_sha1_import_core(&ctx->sha_ctx, in);
+}
+
+static struct shash_alg algs[] = {
+	{
+		.base.cra_name		= "sha1",
+		.base.cra_driver_name	= "sha1-lib",
+		.base.cra_priority	= 300,
+		.base.cra_blocksize	= SHA1_BLOCK_SIZE,
+		.base.cra_module	= THIS_MODULE,
+		.digestsize		= SHA1_DIGEST_SIZE,
+		.init			= crypto_sha1_init,
+		.update			= crypto_sha1_update,
+		.final			= crypto_sha1_final,
+		.digest			= crypto_sha1_digest,
+		.export			= crypto_sha1_export,
+		.import			= crypto_sha1_import,
+		.export_core		= crypto_sha1_export_core,
+		.import_core		= crypto_sha1_import_core,
+		.descsize		= sizeof(struct sha1_ctx),
+		.statesize		= SHA1_SHASH_STATE_SIZE,
+	},
+	{
+		.base.cra_name		= "hmac(sha1)",
+		.base.cra_driver_name	= "hmac-sha1-lib",
+		.base.cra_priority	= 300,
+		.base.cra_blocksize	= SHA1_BLOCK_SIZE,
+		.base.cra_ctxsize	= sizeof(struct hmac_sha1_key),
+		.base.cra_module	= THIS_MODULE,
+		.digestsize		= SHA1_DIGEST_SIZE,
+		.setkey			= crypto_hmac_sha1_setkey,
+		.init			= crypto_hmac_sha1_init,
+		.update			= crypto_hmac_sha1_update,
+		.final			= crypto_hmac_sha1_final,
+		.digest			= crypto_hmac_sha1_digest,
+		.export			= crypto_hmac_sha1_export,
+		.import			= crypto_hmac_sha1_import,
+		.export_core		= crypto_hmac_sha1_export_core,
+		.import_core		= crypto_hmac_sha1_import_core,
+		.descsize		= sizeof(struct hmac_sha1_ctx),
+		.statesize		= SHA1_SHASH_STATE_SIZE,
+	},
+};
+
+static int __init crypto_sha1_mod_init(void)
+{
+	return crypto_register_shashes(algs, ARRAY_SIZE(algs));
+}
+module_init(crypto_sha1_mod_init);
+
+static void __exit crypto_sha1_mod_exit(void)
+{
+	crypto_unregister_shashes(algs, ARRAY_SIZE(algs));
+}
+module_exit(crypto_sha1_mod_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Crypto API support for SHA-1 and HMAC-SHA1");
+
+MODULE_ALIAS_CRYPTO("sha1");
+MODULE_ALIAS_CRYPTO("sha1-lib");
+MODULE_ALIAS_CRYPTO("hmac(sha1)");
+MODULE_ALIAS_CRYPTO("hmac-sha1-lib");