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-rw-r--r--block/sed-opal.c2719
1 files changed, 2719 insertions, 0 deletions
diff --git a/block/sed-opal.c b/block/sed-opal.c
new file mode 100644
index 000000000..0ac5a4f3f
--- /dev/null
+++ b/block/sed-opal.c
@@ -0,0 +1,2719 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Authors:
+ * Scott Bauer <scott.bauer@intel.com>
+ * Rafael Antognolli <rafael.antognolli@intel.com>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ":OPAL: " fmt
+
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/genhd.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+#include <uapi/linux/sed-opal.h>
+#include <linux/sed-opal.h>
+#include <linux/string.h>
+#include <linux/kdev_t.h>
+
+#include "opal_proto.h"
+
+#define IO_BUFFER_LENGTH 2048
+#define MAX_TOKS 64
+
+/* Number of bytes needed by cmd_finalize. */
+#define CMD_FINALIZE_BYTES_NEEDED 7
+
+struct opal_step {
+ int (*fn)(struct opal_dev *dev, void *data);
+ void *data;
+};
+typedef int (cont_fn)(struct opal_dev *dev);
+
+enum opal_atom_width {
+ OPAL_WIDTH_TINY,
+ OPAL_WIDTH_SHORT,
+ OPAL_WIDTH_MEDIUM,
+ OPAL_WIDTH_LONG,
+ OPAL_WIDTH_TOKEN
+};
+
+/*
+ * On the parsed response, we don't store again the toks that are already
+ * stored in the response buffer. Instead, for each token, we just store a
+ * pointer to the position in the buffer where the token starts, and the size
+ * of the token in bytes.
+ */
+struct opal_resp_tok {
+ const u8 *pos;
+ size_t len;
+ enum opal_response_token type;
+ enum opal_atom_width width;
+ union {
+ u64 u;
+ s64 s;
+ } stored;
+};
+
+/*
+ * From the response header it's not possible to know how many tokens there are
+ * on the payload. So we hardcode that the maximum will be MAX_TOKS, and later
+ * if we start dealing with messages that have more than that, we can increase
+ * this number. This is done to avoid having to make two passes through the
+ * response, the first one counting how many tokens we have and the second one
+ * actually storing the positions.
+ */
+struct parsed_resp {
+ int num;
+ struct opal_resp_tok toks[MAX_TOKS];
+};
+
+struct opal_dev {
+ bool supported;
+ bool mbr_enabled;
+
+ void *data;
+ sec_send_recv *send_recv;
+
+ struct mutex dev_lock;
+ u16 comid;
+ u32 hsn;
+ u32 tsn;
+ u64 align;
+ u64 lowest_lba;
+
+ size_t pos;
+ u8 *cmd;
+ u8 *resp;
+
+ struct parsed_resp parsed;
+ size_t prev_d_len;
+ void *prev_data;
+
+ struct list_head unlk_lst;
+};
+
+
+static const u8 opaluid[][OPAL_UID_LENGTH] = {
+ /* users */
+ [OPAL_SMUID_UID] =
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff },
+ [OPAL_THISSP_UID] =
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 },
+ [OPAL_ADMINSP_UID] =
+ { 0x00, 0x00, 0x02, 0x05, 0x00, 0x00, 0x00, 0x01 },
+ [OPAL_LOCKINGSP_UID] =
+ { 0x00, 0x00, 0x02, 0x05, 0x00, 0x00, 0x00, 0x02 },
+ [OPAL_ENTERPRISE_LOCKINGSP_UID] =
+ { 0x00, 0x00, 0x02, 0x05, 0x00, 0x01, 0x00, 0x01 },
+ [OPAL_ANYBODY_UID] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x01 },
+ [OPAL_SID_UID] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x06 },
+ [OPAL_ADMIN1_UID] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x01, 0x00, 0x01 },
+ [OPAL_USER1_UID] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x03, 0x00, 0x01 },
+ [OPAL_USER2_UID] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x03, 0x00, 0x02 },
+ [OPAL_PSID_UID] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x01, 0xff, 0x01 },
+ [OPAL_ENTERPRISE_BANDMASTER0_UID] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x80, 0x01 },
+ [OPAL_ENTERPRISE_ERASEMASTER_UID] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x84, 0x01 },
+
+ /* tables */
+ [OPAL_TABLE_TABLE] =
+ { 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01 },
+ [OPAL_LOCKINGRANGE_GLOBAL] =
+ { 0x00, 0x00, 0x08, 0x02, 0x00, 0x00, 0x00, 0x01 },
+ [OPAL_LOCKINGRANGE_ACE_RDLOCKED] =
+ { 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xE0, 0x01 },
+ [OPAL_LOCKINGRANGE_ACE_WRLOCKED] =
+ { 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xE8, 0x01 },
+ [OPAL_MBRCONTROL] =
+ { 0x00, 0x00, 0x08, 0x03, 0x00, 0x00, 0x00, 0x01 },
+ [OPAL_MBR] =
+ { 0x00, 0x00, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00 },
+ [OPAL_AUTHORITY_TABLE] =
+ { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x00},
+ [OPAL_C_PIN_TABLE] =
+ { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x00},
+ [OPAL_LOCKING_INFO_TABLE] =
+ { 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00, 0x01 },
+ [OPAL_ENTERPRISE_LOCKING_INFO_TABLE] =
+ { 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00, 0x00 },
+ [OPAL_DATASTORE] =
+ { 0x00, 0x00, 0x10, 0x01, 0x00, 0x00, 0x00, 0x00 },
+
+ /* C_PIN_TABLE object ID's */
+ [OPAL_C_PIN_MSID] =
+ { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x84, 0x02},
+ [OPAL_C_PIN_SID] =
+ { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x01},
+ [OPAL_C_PIN_ADMIN1] =
+ { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x01, 0x00, 0x01},
+
+ /* half UID's (only first 4 bytes used) */
+ [OPAL_HALF_UID_AUTHORITY_OBJ_REF] =
+ { 0x00, 0x00, 0x0C, 0x05, 0xff, 0xff, 0xff, 0xff },
+ [OPAL_HALF_UID_BOOLEAN_ACE] =
+ { 0x00, 0x00, 0x04, 0x0E, 0xff, 0xff, 0xff, 0xff },
+
+ /* special value for omitted optional parameter */
+ [OPAL_UID_HEXFF] =
+ { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+};
+
+/*
+ * TCG Storage SSC Methods.
+ * Derived from: TCG_Storage_Architecture_Core_Spec_v2.01_r1.00
+ * Section: 6.3 Assigned UIDs
+ */
+static const u8 opalmethod[][OPAL_METHOD_LENGTH] = {
+ [OPAL_PROPERTIES] =
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x01 },
+ [OPAL_STARTSESSION] =
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x02 },
+ [OPAL_REVERT] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x02, 0x02 },
+ [OPAL_ACTIVATE] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x02, 0x03 },
+ [OPAL_EGET] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x06 },
+ [OPAL_ESET] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x07 },
+ [OPAL_NEXT] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x08 },
+ [OPAL_EAUTHENTICATE] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x0c },
+ [OPAL_GETACL] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x0d },
+ [OPAL_GENKEY] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x10 },
+ [OPAL_REVERTSP] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x11 },
+ [OPAL_GET] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x16 },
+ [OPAL_SET] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x17 },
+ [OPAL_AUTHENTICATE] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x1c },
+ [OPAL_RANDOM] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x01 },
+ [OPAL_ERASE] =
+ { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x08, 0x03 },
+};
+
+static int end_opal_session_error(struct opal_dev *dev);
+static int opal_discovery0_step(struct opal_dev *dev);
+
+struct opal_suspend_data {
+ struct opal_lock_unlock unlk;
+ u8 lr;
+ struct list_head node;
+};
+
+/*
+ * Derived from:
+ * TCG_Storage_Architecture_Core_Spec_v2.01_r1.00
+ * Section: 5.1.5 Method Status Codes
+ */
+static const char * const opal_errors[] = {
+ "Success",
+ "Not Authorized",
+ "Unknown Error",
+ "SP Busy",
+ "SP Failed",
+ "SP Disabled",
+ "SP Frozen",
+ "No Sessions Available",
+ "Uniqueness Conflict",
+ "Insufficient Space",
+ "Insufficient Rows",
+ "Invalid Function",
+ "Invalid Parameter",
+ "Invalid Reference",
+ "Unknown Error",
+ "TPER Malfunction",
+ "Transaction Failure",
+ "Response Overflow",
+ "Authority Locked Out",
+};
+
+static const char *opal_error_to_human(int error)
+{
+ if (error == 0x3f)
+ return "Failed";
+
+ if (error >= ARRAY_SIZE(opal_errors) || error < 0)
+ return "Unknown Error";
+
+ return opal_errors[error];
+}
+
+static void print_buffer(const u8 *ptr, u32 length)
+{
+#ifdef DEBUG
+ print_hex_dump_bytes("OPAL: ", DUMP_PREFIX_OFFSET, ptr, length);
+ pr_debug("\n");
+#endif
+}
+
+static bool check_tper(const void *data)
+{
+ const struct d0_tper_features *tper = data;
+ u8 flags = tper->supported_features;
+
+ if (!(flags & TPER_SYNC_SUPPORTED)) {
+ pr_debug("TPer sync not supported. flags = %d\n",
+ tper->supported_features);
+ return false;
+ }
+
+ return true;
+}
+
+static bool check_mbrenabled(const void *data)
+{
+ const struct d0_locking_features *lfeat = data;
+ u8 sup_feat = lfeat->supported_features;
+
+ return !!(sup_feat & MBR_ENABLED_MASK);
+}
+
+static bool check_sum(const void *data)
+{
+ const struct d0_single_user_mode *sum = data;
+ u32 nlo = be32_to_cpu(sum->num_locking_objects);
+
+ if (nlo == 0) {
+ pr_debug("Need at least one locking object.\n");
+ return false;
+ }
+
+ pr_debug("Number of locking objects: %d\n", nlo);
+
+ return true;
+}
+
+static u16 get_comid_v100(const void *data)
+{
+ const struct d0_opal_v100 *v100 = data;
+
+ return be16_to_cpu(v100->baseComID);
+}
+
+static u16 get_comid_v200(const void *data)
+{
+ const struct d0_opal_v200 *v200 = data;
+
+ return be16_to_cpu(v200->baseComID);
+}
+
+static int opal_send_cmd(struct opal_dev *dev)
+{
+ return dev->send_recv(dev->data, dev->comid, TCG_SECP_01,
+ dev->cmd, IO_BUFFER_LENGTH,
+ true);
+}
+
+static int opal_recv_cmd(struct opal_dev *dev)
+{
+ return dev->send_recv(dev->data, dev->comid, TCG_SECP_01,
+ dev->resp, IO_BUFFER_LENGTH,
+ false);
+}
+
+static int opal_recv_check(struct opal_dev *dev)
+{
+ size_t buflen = IO_BUFFER_LENGTH;
+ void *buffer = dev->resp;
+ struct opal_header *hdr = buffer;
+ int ret;
+
+ do {
+ pr_debug("Sent OPAL command: outstanding=%d, minTransfer=%d\n",
+ hdr->cp.outstandingData,
+ hdr->cp.minTransfer);
+
+ if (hdr->cp.outstandingData == 0 ||
+ hdr->cp.minTransfer != 0)
+ return 0;
+
+ memset(buffer, 0, buflen);
+ ret = opal_recv_cmd(dev);
+ } while (!ret);
+
+ return ret;
+}
+
+static int opal_send_recv(struct opal_dev *dev, cont_fn *cont)
+{
+ int ret;
+
+ ret = opal_send_cmd(dev);
+ if (ret)
+ return ret;
+ ret = opal_recv_cmd(dev);
+ if (ret)
+ return ret;
+ ret = opal_recv_check(dev);
+ if (ret)
+ return ret;
+ return cont(dev);
+}
+
+static void check_geometry(struct opal_dev *dev, const void *data)
+{
+ const struct d0_geometry_features *geo = data;
+
+ dev->align = be64_to_cpu(geo->alignment_granularity);
+ dev->lowest_lba = be64_to_cpu(geo->lowest_aligned_lba);
+}
+
+static int execute_step(struct opal_dev *dev,
+ const struct opal_step *step, size_t stepIndex)
+{
+ int error = step->fn(dev, step->data);
+
+ if (error) {
+ pr_debug("Step %zu (%pS) failed with error %d: %s\n",
+ stepIndex, step->fn, error,
+ opal_error_to_human(error));
+ }
+
+ return error;
+}
+
+static int execute_steps(struct opal_dev *dev,
+ const struct opal_step *steps, size_t n_steps)
+{
+ size_t state = 0;
+ int error;
+
+ /* first do a discovery0 */
+ error = opal_discovery0_step(dev);
+ if (error)
+ return error;
+
+ for (state = 0; state < n_steps; state++) {
+ error = execute_step(dev, &steps[state], state);
+ if (error)
+ goto out_error;
+ }
+
+ return 0;
+
+out_error:
+ /*
+ * For each OPAL command the first step in steps starts some sort of
+ * session. If an error occurred in the initial discovery0 or if an
+ * error occurred in the first step (and thus stopping the loop with
+ * state == 0) then there was an error before or during the attempt to
+ * start a session. Therefore we shouldn't attempt to terminate a
+ * session, as one has not yet been created.
+ */
+ if (state > 0)
+ end_opal_session_error(dev);
+
+ return error;
+}
+
+static int opal_discovery0_end(struct opal_dev *dev)
+{
+ bool found_com_id = false, supported = true, single_user = false;
+ const struct d0_header *hdr = (struct d0_header *)dev->resp;
+ const u8 *epos = dev->resp, *cpos = dev->resp;
+ u16 comid = 0;
+ u32 hlen = be32_to_cpu(hdr->length);
+
+ print_buffer(dev->resp, hlen);
+ dev->mbr_enabled = false;
+
+ if (hlen > IO_BUFFER_LENGTH - sizeof(*hdr)) {
+ pr_debug("Discovery length overflows buffer (%zu+%u)/%u\n",
+ sizeof(*hdr), hlen, IO_BUFFER_LENGTH);
+ return -EFAULT;
+ }
+
+ epos += hlen; /* end of buffer */
+ cpos += sizeof(*hdr); /* current position on buffer */
+
+ while (cpos < epos && supported) {
+ const struct d0_features *body =
+ (const struct d0_features *)cpos;
+
+ switch (be16_to_cpu(body->code)) {
+ case FC_TPER:
+ supported = check_tper(body->features);
+ break;
+ case FC_SINGLEUSER:
+ single_user = check_sum(body->features);
+ break;
+ case FC_GEOMETRY:
+ check_geometry(dev, body);
+ break;
+ case FC_LOCKING:
+ dev->mbr_enabled = check_mbrenabled(body->features);
+ break;
+ case FC_ENTERPRISE:
+ case FC_DATASTORE:
+ /* some ignored properties */
+ pr_debug("Found OPAL feature description: %d\n",
+ be16_to_cpu(body->code));
+ break;
+ case FC_OPALV100:
+ comid = get_comid_v100(body->features);
+ found_com_id = true;
+ break;
+ case FC_OPALV200:
+ comid = get_comid_v200(body->features);
+ found_com_id = true;
+ break;
+ case 0xbfff ... 0xffff:
+ /* vendor specific, just ignore */
+ break;
+ default:
+ pr_debug("OPAL Unknown feature: %d\n",
+ be16_to_cpu(body->code));
+
+ }
+ cpos += body->length + 4;
+ }
+
+ if (!supported) {
+ pr_debug("This device is not Opal enabled. Not Supported!\n");
+ return -EOPNOTSUPP;
+ }
+
+ if (!single_user)
+ pr_debug("Device doesn't support single user mode\n");
+
+
+ if (!found_com_id) {
+ pr_debug("Could not find OPAL comid for device. Returning early\n");
+ return -EOPNOTSUPP;
+ }
+
+ dev->comid = comid;
+
+ return 0;
+}
+
+static int opal_discovery0(struct opal_dev *dev, void *data)
+{
+ int ret;
+
+ memset(dev->resp, 0, IO_BUFFER_LENGTH);
+ dev->comid = OPAL_DISCOVERY_COMID;
+ ret = opal_recv_cmd(dev);
+ if (ret)
+ return ret;
+
+ return opal_discovery0_end(dev);
+}
+
+static int opal_discovery0_step(struct opal_dev *dev)
+{
+ const struct opal_step discovery0_step = {
+ opal_discovery0,
+ };
+
+ return execute_step(dev, &discovery0_step, 0);
+}
+
+static size_t remaining_size(struct opal_dev *cmd)
+{
+ return IO_BUFFER_LENGTH - cmd->pos;
+}
+
+static bool can_add(int *err, struct opal_dev *cmd, size_t len)
+{
+ if (*err)
+ return false;
+
+ if (remaining_size(cmd) < len) {
+ pr_debug("Error adding %zu bytes: end of buffer.\n", len);
+ *err = -ERANGE;
+ return false;
+ }
+
+ return true;
+}
+
+static void add_token_u8(int *err, struct opal_dev *cmd, u8 tok)
+{
+ if (!can_add(err, cmd, 1))
+ return;
+
+ cmd->cmd[cmd->pos++] = tok;
+}
+
+static void add_short_atom_header(struct opal_dev *cmd, bool bytestring,
+ bool has_sign, int len)
+{
+ u8 atom;
+ int err = 0;
+
+ atom = SHORT_ATOM_ID;
+ atom |= bytestring ? SHORT_ATOM_BYTESTRING : 0;
+ atom |= has_sign ? SHORT_ATOM_SIGNED : 0;
+ atom |= len & SHORT_ATOM_LEN_MASK;
+
+ add_token_u8(&err, cmd, atom);
+}
+
+static void add_medium_atom_header(struct opal_dev *cmd, bool bytestring,
+ bool has_sign, int len)
+{
+ u8 header0;
+
+ header0 = MEDIUM_ATOM_ID;
+ header0 |= bytestring ? MEDIUM_ATOM_BYTESTRING : 0;
+ header0 |= has_sign ? MEDIUM_ATOM_SIGNED : 0;
+ header0 |= (len >> 8) & MEDIUM_ATOM_LEN_MASK;
+
+ cmd->cmd[cmd->pos++] = header0;
+ cmd->cmd[cmd->pos++] = len;
+}
+
+static void add_token_u64(int *err, struct opal_dev *cmd, u64 number)
+{
+ size_t len;
+ int msb;
+
+ if (!(number & ~TINY_ATOM_DATA_MASK)) {
+ add_token_u8(err, cmd, number);
+ return;
+ }
+
+ msb = fls64(number);
+ len = DIV_ROUND_UP(msb, 8);
+
+ if (!can_add(err, cmd, len + 1)) {
+ pr_debug("Error adding u64: end of buffer.\n");
+ return;
+ }
+ add_short_atom_header(cmd, false, false, len);
+ while (len--)
+ add_token_u8(err, cmd, number >> (len * 8));
+}
+
+static u8 *add_bytestring_header(int *err, struct opal_dev *cmd, size_t len)
+{
+ size_t header_len = 1;
+ bool is_short_atom = true;
+
+ if (len & ~SHORT_ATOM_LEN_MASK) {
+ header_len = 2;
+ is_short_atom = false;
+ }
+
+ if (!can_add(err, cmd, header_len + len)) {
+ pr_debug("Error adding bytestring: end of buffer.\n");
+ return NULL;
+ }
+
+ if (is_short_atom)
+ add_short_atom_header(cmd, true, false, len);
+ else
+ add_medium_atom_header(cmd, true, false, len);
+
+ return &cmd->cmd[cmd->pos];
+}
+
+static void add_token_bytestring(int *err, struct opal_dev *cmd,
+ const u8 *bytestring, size_t len)
+{
+ u8 *start;
+
+ start = add_bytestring_header(err, cmd, len);
+ if (!start)
+ return;
+ memcpy(start, bytestring, len);
+ cmd->pos += len;
+}
+
+static int build_locking_range(u8 *buffer, size_t length, u8 lr)
+{
+ if (length > OPAL_UID_LENGTH) {
+ pr_debug("Can't build locking range. Length OOB\n");
+ return -ERANGE;
+ }
+
+ memcpy(buffer, opaluid[OPAL_LOCKINGRANGE_GLOBAL], OPAL_UID_LENGTH);
+
+ if (lr == 0)
+ return 0;
+
+ buffer[5] = LOCKING_RANGE_NON_GLOBAL;
+ buffer[7] = lr;
+
+ return 0;
+}
+
+static int build_locking_user(u8 *buffer, size_t length, u8 lr)
+{
+ if (length > OPAL_UID_LENGTH) {
+ pr_debug("Can't build locking range user. Length OOB\n");
+ return -ERANGE;
+ }
+
+ memcpy(buffer, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH);
+
+ buffer[7] = lr + 1;
+
+ return 0;
+}
+
+static void set_comid(struct opal_dev *cmd, u16 comid)
+{
+ struct opal_header *hdr = (struct opal_header *)cmd->cmd;
+
+ hdr->cp.extendedComID[0] = comid >> 8;
+ hdr->cp.extendedComID[1] = comid;
+ hdr->cp.extendedComID[2] = 0;
+ hdr->cp.extendedComID[3] = 0;
+}
+
+static int cmd_finalize(struct opal_dev *cmd, u32 hsn, u32 tsn)
+{
+ struct opal_header *hdr;
+ int err = 0;
+
+ /*
+ * Close the parameter list opened from cmd_start.
+ * The number of bytes added must be equal to
+ * CMD_FINALIZE_BYTES_NEEDED.
+ */
+ add_token_u8(&err, cmd, OPAL_ENDLIST);
+
+ add_token_u8(&err, cmd, OPAL_ENDOFDATA);
+ add_token_u8(&err, cmd, OPAL_STARTLIST);
+ add_token_u8(&err, cmd, 0);
+ add_token_u8(&err, cmd, 0);
+ add_token_u8(&err, cmd, 0);
+ add_token_u8(&err, cmd, OPAL_ENDLIST);
+
+ if (err) {
+ pr_debug("Error finalizing command.\n");
+ return -EFAULT;
+ }
+
+ hdr = (struct opal_header *) cmd->cmd;
+
+ hdr->pkt.tsn = cpu_to_be32(tsn);
+ hdr->pkt.hsn = cpu_to_be32(hsn);
+
+ hdr->subpkt.length = cpu_to_be32(cmd->pos - sizeof(*hdr));
+ while (cmd->pos % 4) {
+ if (cmd->pos >= IO_BUFFER_LENGTH) {
+ pr_debug("Error: Buffer overrun\n");
+ return -ERANGE;
+ }
+ cmd->cmd[cmd->pos++] = 0;
+ }
+ hdr->pkt.length = cpu_to_be32(cmd->pos - sizeof(hdr->cp) -
+ sizeof(hdr->pkt));
+ hdr->cp.length = cpu_to_be32(cmd->pos - sizeof(hdr->cp));
+
+ return 0;
+}
+
+static const struct opal_resp_tok *response_get_token(
+ const struct parsed_resp *resp,
+ int n)
+{
+ const struct opal_resp_tok *tok;
+
+ if (!resp) {
+ pr_debug("Response is NULL\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (n >= resp->num) {
+ pr_debug("Token number doesn't exist: %d, resp: %d\n",
+ n, resp->num);
+ return ERR_PTR(-EINVAL);
+ }
+
+ tok = &resp->toks[n];
+ if (tok->len == 0) {
+ pr_debug("Token length must be non-zero\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ return tok;
+}
+
+static ssize_t response_parse_tiny(struct opal_resp_tok *tok,
+ const u8 *pos)
+{
+ tok->pos = pos;
+ tok->len = 1;
+ tok->width = OPAL_WIDTH_TINY;
+
+ if (pos[0] & TINY_ATOM_SIGNED) {
+ tok->type = OPAL_DTA_TOKENID_SINT;
+ } else {
+ tok->type = OPAL_DTA_TOKENID_UINT;
+ tok->stored.u = pos[0] & 0x3f;
+ }
+
+ return tok->len;
+}
+
+static ssize_t response_parse_short(struct opal_resp_tok *tok,
+ const u8 *pos)
+{
+ tok->pos = pos;
+ tok->len = (pos[0] & SHORT_ATOM_LEN_MASK) + 1;
+ tok->width = OPAL_WIDTH_SHORT;
+
+ if (pos[0] & SHORT_ATOM_BYTESTRING) {
+ tok->type = OPAL_DTA_TOKENID_BYTESTRING;
+ } else if (pos[0] & SHORT_ATOM_SIGNED) {
+ tok->type = OPAL_DTA_TOKENID_SINT;
+ } else {
+ u64 u_integer = 0;
+ ssize_t i, b = 0;
+
+ tok->type = OPAL_DTA_TOKENID_UINT;
+ if (tok->len > 9) {
+ pr_debug("uint64 with more than 8 bytes\n");
+ return -EINVAL;
+ }
+ for (i = tok->len - 1; i > 0; i--) {
+ u_integer |= ((u64)pos[i] << (8 * b));
+ b++;
+ }
+ tok->stored.u = u_integer;
+ }
+
+ return tok->len;
+}
+
+static ssize_t response_parse_medium(struct opal_resp_tok *tok,
+ const u8 *pos)
+{
+ tok->pos = pos;
+ tok->len = (((pos[0] & MEDIUM_ATOM_LEN_MASK) << 8) | pos[1]) + 2;
+ tok->width = OPAL_WIDTH_MEDIUM;
+
+ if (pos[0] & MEDIUM_ATOM_BYTESTRING)
+ tok->type = OPAL_DTA_TOKENID_BYTESTRING;
+ else if (pos[0] & MEDIUM_ATOM_SIGNED)
+ tok->type = OPAL_DTA_TOKENID_SINT;
+ else
+ tok->type = OPAL_DTA_TOKENID_UINT;
+
+ return tok->len;
+}
+
+static ssize_t response_parse_long(struct opal_resp_tok *tok,
+ const u8 *pos)
+{
+ tok->pos = pos;
+ tok->len = ((pos[1] << 16) | (pos[2] << 8) | pos[3]) + 4;
+ tok->width = OPAL_WIDTH_LONG;
+
+ if (pos[0] & LONG_ATOM_BYTESTRING)
+ tok->type = OPAL_DTA_TOKENID_BYTESTRING;
+ else if (pos[0] & LONG_ATOM_SIGNED)
+ tok->type = OPAL_DTA_TOKENID_SINT;
+ else
+ tok->type = OPAL_DTA_TOKENID_UINT;
+
+ return tok->len;
+}
+
+static ssize_t response_parse_token(struct opal_resp_tok *tok,
+ const u8 *pos)
+{
+ tok->pos = pos;
+ tok->len = 1;
+ tok->type = OPAL_DTA_TOKENID_TOKEN;
+ tok->width = OPAL_WIDTH_TOKEN;
+
+ return tok->len;
+}
+
+static int response_parse(const u8 *buf, size_t length,
+ struct parsed_resp *resp)
+{
+ const struct opal_header *hdr;
+ struct opal_resp_tok *iter;
+ int num_entries = 0;
+ int total;
+ ssize_t token_length;
+ const u8 *pos;
+ u32 clen, plen, slen;
+
+ if (!buf)
+ return -EFAULT;
+
+ if (!resp)
+ return -EFAULT;
+
+ hdr = (struct opal_header *)buf;
+ pos = buf;
+ pos += sizeof(*hdr);
+
+ clen = be32_to_cpu(hdr->cp.length);
+ plen = be32_to_cpu(hdr->pkt.length);
+ slen = be32_to_cpu(hdr->subpkt.length);
+ pr_debug("Response size: cp: %u, pkt: %u, subpkt: %u\n",
+ clen, plen, slen);
+
+ if (clen == 0 || plen == 0 || slen == 0 ||
+ slen > IO_BUFFER_LENGTH - sizeof(*hdr)) {
+ pr_debug("Bad header length. cp: %u, pkt: %u, subpkt: %u\n",
+ clen, plen, slen);
+ print_buffer(pos, sizeof(*hdr));
+ return -EINVAL;
+ }
+
+ if (pos > buf + length)
+ return -EFAULT;
+
+ iter = resp->toks;
+ total = slen;
+ print_buffer(pos, total);
+ while (total > 0) {
+ if (pos[0] <= TINY_ATOM_BYTE) /* tiny atom */
+ token_length = response_parse_tiny(iter, pos);
+ else if (pos[0] <= SHORT_ATOM_BYTE) /* short atom */
+ token_length = response_parse_short(iter, pos);
+ else if (pos[0] <= MEDIUM_ATOM_BYTE) /* medium atom */
+ token_length = response_parse_medium(iter, pos);
+ else if (pos[0] <= LONG_ATOM_BYTE) /* long atom */
+ token_length = response_parse_long(iter, pos);
+ else /* TOKEN */
+ token_length = response_parse_token(iter, pos);
+
+ if (token_length < 0)
+ return token_length;
+
+ pos += token_length;
+ total -= token_length;
+ iter++;
+ num_entries++;
+ }
+
+ resp->num = num_entries;
+
+ return 0;
+}
+
+static size_t response_get_string(const struct parsed_resp *resp, int n,
+ const char **store)
+{
+ u8 skip;
+ const struct opal_resp_tok *tok;
+
+ *store = NULL;
+ tok = response_get_token(resp, n);
+ if (IS_ERR(tok))
+ return 0;
+
+ if (tok->type != OPAL_DTA_TOKENID_BYTESTRING) {
+ pr_debug("Token is not a byte string!\n");
+ return 0;
+ }
+
+ switch (tok->width) {
+ case OPAL_WIDTH_TINY:
+ case OPAL_WIDTH_SHORT:
+ skip = 1;
+ break;
+ case OPAL_WIDTH_MEDIUM:
+ skip = 2;
+ break;
+ case OPAL_WIDTH_LONG:
+ skip = 4;
+ break;
+ default:
+ pr_debug("Token has invalid width!\n");
+ return 0;
+ }
+
+ *store = tok->pos + skip;
+
+ return tok->len - skip;
+}
+
+static u64 response_get_u64(const struct parsed_resp *resp, int n)
+{
+ const struct opal_resp_tok *tok;
+
+ tok = response_get_token(resp, n);
+ if (IS_ERR(tok))
+ return 0;
+
+ if (tok->type != OPAL_DTA_TOKENID_UINT) {
+ pr_debug("Token is not unsigned int: %d\n", tok->type);
+ return 0;
+ }
+
+ if (tok->width != OPAL_WIDTH_TINY && tok->width != OPAL_WIDTH_SHORT) {
+ pr_debug("Atom is not short or tiny: %d\n", tok->width);
+ return 0;
+ }
+
+ return tok->stored.u;
+}
+
+static bool response_token_matches(const struct opal_resp_tok *token, u8 match)
+{
+ if (IS_ERR(token) ||
+ token->type != OPAL_DTA_TOKENID_TOKEN ||
+ token->pos[0] != match)
+ return false;
+ return true;
+}
+
+static u8 response_status(const struct parsed_resp *resp)
+{
+ const struct opal_resp_tok *tok;
+
+ tok = response_get_token(resp, 0);
+ if (response_token_matches(tok, OPAL_ENDOFSESSION))
+ return 0;
+
+ if (resp->num < 5)
+ return DTAERROR_NO_METHOD_STATUS;
+
+ tok = response_get_token(resp, resp->num - 5);
+ if (!response_token_matches(tok, OPAL_STARTLIST))
+ return DTAERROR_NO_METHOD_STATUS;
+
+ tok = response_get_token(resp, resp->num - 1);
+ if (!response_token_matches(tok, OPAL_ENDLIST))
+ return DTAERROR_NO_METHOD_STATUS;
+
+ return response_get_u64(resp, resp->num - 4);
+}
+
+/* Parses and checks for errors */
+static int parse_and_check_status(struct opal_dev *dev)
+{
+ int error;
+
+ print_buffer(dev->cmd, dev->pos);
+
+ error = response_parse(dev->resp, IO_BUFFER_LENGTH, &dev->parsed);
+ if (error) {
+ pr_debug("Couldn't parse response.\n");
+ return error;
+ }
+
+ return response_status(&dev->parsed);
+}
+
+static void clear_opal_cmd(struct opal_dev *dev)
+{
+ dev->pos = sizeof(struct opal_header);
+ memset(dev->cmd, 0, IO_BUFFER_LENGTH);
+}
+
+static int cmd_start(struct opal_dev *dev, const u8 *uid, const u8 *method)
+{
+ int err = 0;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+
+ add_token_u8(&err, dev, OPAL_CALL);
+ add_token_bytestring(&err, dev, uid, OPAL_UID_LENGTH);
+ add_token_bytestring(&err, dev, method, OPAL_METHOD_LENGTH);
+
+ /*
+ * Every method call is followed by its parameters enclosed within
+ * OPAL_STARTLIST and OPAL_ENDLIST tokens. We automatically open the
+ * parameter list here and close it later in cmd_finalize.
+ */
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+
+ return err;
+}
+
+static int start_opal_session_cont(struct opal_dev *dev)
+{
+ u32 hsn, tsn;
+ int error = 0;
+
+ error = parse_and_check_status(dev);
+ if (error)
+ return error;
+
+ hsn = response_get_u64(&dev->parsed, 4);
+ tsn = response_get_u64(&dev->parsed, 5);
+
+ if (hsn != GENERIC_HOST_SESSION_NUM || tsn < FIRST_TPER_SESSION_NUM) {
+ pr_debug("Couldn't authenticate session\n");
+ return -EPERM;
+ }
+
+ dev->hsn = hsn;
+ dev->tsn = tsn;
+
+ return 0;
+}
+
+static void add_suspend_info(struct opal_dev *dev,
+ struct opal_suspend_data *sus)
+{
+ struct opal_suspend_data *iter;
+
+ list_for_each_entry(iter, &dev->unlk_lst, node) {
+ if (iter->lr == sus->lr) {
+ list_del(&iter->node);
+ kfree(iter);
+ break;
+ }
+ }
+ list_add_tail(&sus->node, &dev->unlk_lst);
+}
+
+static int end_session_cont(struct opal_dev *dev)
+{
+ dev->hsn = 0;
+ dev->tsn = 0;
+
+ return parse_and_check_status(dev);
+}
+
+static int finalize_and_send(struct opal_dev *dev, cont_fn cont)
+{
+ int ret;
+
+ ret = cmd_finalize(dev, dev->hsn, dev->tsn);
+ if (ret) {
+ pr_debug("Error finalizing command buffer: %d\n", ret);
+ return ret;
+ }
+
+ print_buffer(dev->cmd, dev->pos);
+
+ return opal_send_recv(dev, cont);
+}
+
+/*
+ * request @column from table @table on device @dev. On success, the column
+ * data will be available in dev->resp->tok[4]
+ */
+static int generic_get_column(struct opal_dev *dev, const u8 *table,
+ u64 column)
+{
+ int err;
+
+ err = cmd_start(dev, table, opalmethod[OPAL_GET]);
+
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_STARTCOLUMN);
+ add_token_u64(&err, dev, column);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_ENDCOLUMN);
+ add_token_u64(&err, dev, column);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+
+ if (err)
+ return err;
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+/*
+ * see TCG SAS 5.3.2.3 for a description of the available columns
+ *
+ * the result is provided in dev->resp->tok[4]
+ */
+static int generic_get_table_info(struct opal_dev *dev, const u8 *table_uid,
+ u64 column)
+{
+ u8 uid[OPAL_UID_LENGTH];
+ const unsigned int half = OPAL_UID_LENGTH_HALF;
+
+ /* sed-opal UIDs can be split in two halves:
+ * first: actual table index
+ * second: relative index in the table
+ * so we have to get the first half of the OPAL_TABLE_TABLE and use the
+ * first part of the target table as relative index into that table
+ */
+ memcpy(uid, opaluid[OPAL_TABLE_TABLE], half);
+ memcpy(uid + half, table_uid, half);
+
+ return generic_get_column(dev, uid, column);
+}
+
+static int gen_key(struct opal_dev *dev, void *data)
+{
+ u8 uid[OPAL_UID_LENGTH];
+ int err;
+
+ memcpy(uid, dev->prev_data, min(sizeof(uid), dev->prev_d_len));
+ kfree(dev->prev_data);
+ dev->prev_data = NULL;
+
+ err = cmd_start(dev, uid, opalmethod[OPAL_GENKEY]);
+
+ if (err) {
+ pr_debug("Error building gen key command\n");
+ return err;
+
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int get_active_key_cont(struct opal_dev *dev)
+{
+ const char *activekey;
+ size_t keylen;
+ int error = 0;
+
+ error = parse_and_check_status(dev);
+ if (error)
+ return error;
+
+ keylen = response_get_string(&dev->parsed, 4, &activekey);
+ if (!activekey) {
+ pr_debug("%s: Couldn't extract the Activekey from the response\n",
+ __func__);
+ return OPAL_INVAL_PARAM;
+ }
+
+ dev->prev_data = kmemdup(activekey, keylen, GFP_KERNEL);
+
+ if (!dev->prev_data)
+ return -ENOMEM;
+
+ dev->prev_d_len = keylen;
+
+ return 0;
+}
+
+static int get_active_key(struct opal_dev *dev, void *data)
+{
+ u8 uid[OPAL_UID_LENGTH];
+ int err;
+ u8 *lr = data;
+
+ err = build_locking_range(uid, sizeof(uid), *lr);
+ if (err)
+ return err;
+
+ err = generic_get_column(dev, uid, OPAL_ACTIVEKEY);
+ if (err)
+ return err;
+
+ return get_active_key_cont(dev);
+}
+
+static int generic_table_write_data(struct opal_dev *dev, const u64 data,
+ u64 offset, u64 size, const u8 *uid)
+{
+ const u8 __user *src = (u8 __user *)(uintptr_t)data;
+ u8 *dst;
+ u64 len;
+ size_t off = 0;
+ int err;
+
+ /* do we fit in the available space? */
+ err = generic_get_table_info(dev, uid, OPAL_TABLE_ROWS);
+ if (err) {
+ pr_debug("Couldn't get the table size\n");
+ return err;
+ }
+
+ len = response_get_u64(&dev->parsed, 4);
+ if (size > len || offset > len - size) {
+ pr_debug("Does not fit in the table (%llu vs. %llu)\n",
+ offset + size, len);
+ return -ENOSPC;
+ }
+
+ /* do the actual transmission(s) */
+ while (off < size) {
+ err = cmd_start(dev, uid, opalmethod[OPAL_SET]);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_WHERE);
+ add_token_u64(&err, dev, offset + off);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_VALUES);
+
+ /*
+ * The bytestring header is either 1 or 2 bytes, so assume 2.
+ * There also needs to be enough space to accommodate the
+ * trailing OPAL_ENDNAME (1 byte) and tokens added by
+ * cmd_finalize.
+ */
+ len = min(remaining_size(dev) - (2+1+CMD_FINALIZE_BYTES_NEEDED),
+ (size_t)(size - off));
+ pr_debug("Write bytes %zu+%llu/%llu\n", off, len, size);
+
+ dst = add_bytestring_header(&err, dev, len);
+ if (!dst)
+ break;
+
+ if (copy_from_user(dst, src + off, len)) {
+ err = -EFAULT;
+ break;
+ }
+
+ dev->pos += len;
+
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ if (err)
+ break;
+
+ err = finalize_and_send(dev, parse_and_check_status);
+ if (err)
+ break;
+
+ off += len;
+ }
+
+ return err;
+}
+
+static int generic_lr_enable_disable(struct opal_dev *dev,
+ u8 *uid, bool rle, bool wle,
+ bool rl, bool wl)
+{
+ int err;
+
+ err = cmd_start(dev, uid, opalmethod[OPAL_SET]);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_VALUES);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_READLOCKENABLED);
+ add_token_u8(&err, dev, rle);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_WRITELOCKENABLED);
+ add_token_u8(&err, dev, wle);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_READLOCKED);
+ add_token_u8(&err, dev, rl);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_WRITELOCKED);
+ add_token_u8(&err, dev, wl);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ return err;
+}
+
+static inline int enable_global_lr(struct opal_dev *dev, u8 *uid,
+ struct opal_user_lr_setup *setup)
+{
+ int err;
+
+ err = generic_lr_enable_disable(dev, uid, !!setup->RLE, !!setup->WLE,
+ 0, 0);
+ if (err)
+ pr_debug("Failed to create enable global lr command\n");
+
+ return err;
+}
+
+static int setup_locking_range(struct opal_dev *dev, void *data)
+{
+ u8 uid[OPAL_UID_LENGTH];
+ struct opal_user_lr_setup *setup = data;
+ u8 lr;
+ int err;
+
+ lr = setup->session.opal_key.lr;
+ err = build_locking_range(uid, sizeof(uid), lr);
+ if (err)
+ return err;
+
+ if (lr == 0)
+ err = enable_global_lr(dev, uid, setup);
+ else {
+ err = cmd_start(dev, uid, opalmethod[OPAL_SET]);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_VALUES);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_RANGESTART);
+ add_token_u64(&err, dev, setup->range_start);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_RANGELENGTH);
+ add_token_u64(&err, dev, setup->range_length);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_READLOCKENABLED);
+ add_token_u64(&err, dev, !!setup->RLE);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_WRITELOCKENABLED);
+ add_token_u64(&err, dev, !!setup->WLE);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ }
+ if (err) {
+ pr_debug("Error building Setup Locking range command.\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int start_generic_opal_session(struct opal_dev *dev,
+ enum opal_uid auth,
+ enum opal_uid sp_type,
+ const char *key,
+ u8 key_len)
+{
+ u32 hsn;
+ int err;
+
+ if (key == NULL && auth != OPAL_ANYBODY_UID)
+ return OPAL_INVAL_PARAM;
+
+ hsn = GENERIC_HOST_SESSION_NUM;
+ err = cmd_start(dev, opaluid[OPAL_SMUID_UID],
+ opalmethod[OPAL_STARTSESSION]);
+
+ add_token_u64(&err, dev, hsn);
+ add_token_bytestring(&err, dev, opaluid[sp_type], OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, 1);
+
+ switch (auth) {
+ case OPAL_ANYBODY_UID:
+ break;
+ case OPAL_ADMIN1_UID:
+ case OPAL_SID_UID:
+ case OPAL_PSID_UID:
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 0); /* HostChallenge */
+ add_token_bytestring(&err, dev, key, key_len);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 3); /* HostSignAuth */
+ add_token_bytestring(&err, dev, opaluid[auth],
+ OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ break;
+ default:
+ pr_debug("Cannot start Admin SP session with auth %d\n", auth);
+ return OPAL_INVAL_PARAM;
+ }
+
+ if (err) {
+ pr_debug("Error building start adminsp session command.\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, start_opal_session_cont);
+}
+
+static int start_anybodyASP_opal_session(struct opal_dev *dev, void *data)
+{
+ return start_generic_opal_session(dev, OPAL_ANYBODY_UID,
+ OPAL_ADMINSP_UID, NULL, 0);
+}
+
+static int start_SIDASP_opal_session(struct opal_dev *dev, void *data)
+{
+ int ret;
+ const u8 *key = dev->prev_data;
+
+ if (!key) {
+ const struct opal_key *okey = data;
+
+ ret = start_generic_opal_session(dev, OPAL_SID_UID,
+ OPAL_ADMINSP_UID,
+ okey->key,
+ okey->key_len);
+ } else {
+ ret = start_generic_opal_session(dev, OPAL_SID_UID,
+ OPAL_ADMINSP_UID,
+ key, dev->prev_d_len);
+ kfree(key);
+ dev->prev_data = NULL;
+ }
+
+ return ret;
+}
+
+static int start_admin1LSP_opal_session(struct opal_dev *dev, void *data)
+{
+ struct opal_key *key = data;
+
+ return start_generic_opal_session(dev, OPAL_ADMIN1_UID,
+ OPAL_LOCKINGSP_UID,
+ key->key, key->key_len);
+}
+
+static int start_PSID_opal_session(struct opal_dev *dev, void *data)
+{
+ const struct opal_key *okey = data;
+
+ return start_generic_opal_session(dev, OPAL_PSID_UID,
+ OPAL_ADMINSP_UID,
+ okey->key,
+ okey->key_len);
+}
+
+static int start_auth_opal_session(struct opal_dev *dev, void *data)
+{
+ struct opal_session_info *session = data;
+ u8 lk_ul_user[OPAL_UID_LENGTH];
+ size_t keylen = session->opal_key.key_len;
+ int err = 0;
+
+ u8 *key = session->opal_key.key;
+ u32 hsn = GENERIC_HOST_SESSION_NUM;
+
+ if (session->sum)
+ err = build_locking_user(lk_ul_user, sizeof(lk_ul_user),
+ session->opal_key.lr);
+ else if (session->who != OPAL_ADMIN1 && !session->sum)
+ err = build_locking_user(lk_ul_user, sizeof(lk_ul_user),
+ session->who - 1);
+ else
+ memcpy(lk_ul_user, opaluid[OPAL_ADMIN1_UID], OPAL_UID_LENGTH);
+
+ if (err)
+ return err;
+
+ err = cmd_start(dev, opaluid[OPAL_SMUID_UID],
+ opalmethod[OPAL_STARTSESSION]);
+
+ add_token_u64(&err, dev, hsn);
+ add_token_bytestring(&err, dev, opaluid[OPAL_LOCKINGSP_UID],
+ OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, 1);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 0);
+ add_token_bytestring(&err, dev, key, keylen);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 3);
+ add_token_bytestring(&err, dev, lk_ul_user, OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ if (err) {
+ pr_debug("Error building STARTSESSION command.\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, start_opal_session_cont);
+}
+
+static int revert_tper(struct opal_dev *dev, void *data)
+{
+ int err;
+
+ err = cmd_start(dev, opaluid[OPAL_ADMINSP_UID],
+ opalmethod[OPAL_REVERT]);
+ if (err) {
+ pr_debug("Error building REVERT TPER command.\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int internal_activate_user(struct opal_dev *dev, void *data)
+{
+ struct opal_session_info *session = data;
+ u8 uid[OPAL_UID_LENGTH];
+ int err;
+
+ memcpy(uid, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH);
+ uid[7] = session->who;
+
+ err = cmd_start(dev, uid, opalmethod[OPAL_SET]);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_VALUES);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 5); /* Enabled */
+ add_token_u8(&err, dev, OPAL_TRUE);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ if (err) {
+ pr_debug("Error building Activate UserN command.\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int erase_locking_range(struct opal_dev *dev, void *data)
+{
+ struct opal_session_info *session = data;
+ u8 uid[OPAL_UID_LENGTH];
+ int err;
+
+ if (build_locking_range(uid, sizeof(uid), session->opal_key.lr) < 0)
+ return -ERANGE;
+
+ err = cmd_start(dev, uid, opalmethod[OPAL_ERASE]);
+
+ if (err) {
+ pr_debug("Error building Erase Locking Range Command.\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int set_mbr_done(struct opal_dev *dev, void *data)
+{
+ u8 *mbr_done_tf = data;
+ int err;
+
+ err = cmd_start(dev, opaluid[OPAL_MBRCONTROL],
+ opalmethod[OPAL_SET]);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_VALUES);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_MBRDONE);
+ add_token_u8(&err, dev, *mbr_done_tf); /* Done T or F */
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ if (err) {
+ pr_debug("Error Building set MBR Done command\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int set_mbr_enable_disable(struct opal_dev *dev, void *data)
+{
+ u8 *mbr_en_dis = data;
+ int err;
+
+ err = cmd_start(dev, opaluid[OPAL_MBRCONTROL],
+ opalmethod[OPAL_SET]);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_VALUES);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_MBRENABLE);
+ add_token_u8(&err, dev, *mbr_en_dis);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ if (err) {
+ pr_debug("Error Building set MBR done command\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int write_shadow_mbr(struct opal_dev *dev, void *data)
+{
+ struct opal_shadow_mbr *shadow = data;
+
+ return generic_table_write_data(dev, shadow->data, shadow->offset,
+ shadow->size, opaluid[OPAL_MBR]);
+}
+
+static int generic_pw_cmd(u8 *key, size_t key_len, u8 *cpin_uid,
+ struct opal_dev *dev)
+{
+ int err;
+
+ err = cmd_start(dev, cpin_uid, opalmethod[OPAL_SET]);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_VALUES);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_PIN);
+ add_token_bytestring(&err, dev, key, key_len);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ return err;
+}
+
+static int set_new_pw(struct opal_dev *dev, void *data)
+{
+ u8 cpin_uid[OPAL_UID_LENGTH];
+ struct opal_session_info *usr = data;
+
+ memcpy(cpin_uid, opaluid[OPAL_C_PIN_ADMIN1], OPAL_UID_LENGTH);
+
+ if (usr->who != OPAL_ADMIN1) {
+ cpin_uid[5] = 0x03;
+ if (usr->sum)
+ cpin_uid[7] = usr->opal_key.lr + 1;
+ else
+ cpin_uid[7] = usr->who;
+ }
+
+ if (generic_pw_cmd(usr->opal_key.key, usr->opal_key.key_len,
+ cpin_uid, dev)) {
+ pr_debug("Error building set password command.\n");
+ return -ERANGE;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int set_sid_cpin_pin(struct opal_dev *dev, void *data)
+{
+ u8 cpin_uid[OPAL_UID_LENGTH];
+ struct opal_key *key = data;
+
+ memcpy(cpin_uid, opaluid[OPAL_C_PIN_SID], OPAL_UID_LENGTH);
+
+ if (generic_pw_cmd(key->key, key->key_len, cpin_uid, dev)) {
+ pr_debug("Error building Set SID cpin\n");
+ return -ERANGE;
+ }
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int add_user_to_lr(struct opal_dev *dev, void *data)
+{
+ u8 lr_buffer[OPAL_UID_LENGTH];
+ u8 user_uid[OPAL_UID_LENGTH];
+ struct opal_lock_unlock *lkul = data;
+ int err;
+
+ memcpy(lr_buffer, opaluid[OPAL_LOCKINGRANGE_ACE_RDLOCKED],
+ OPAL_UID_LENGTH);
+
+ if (lkul->l_state == OPAL_RW)
+ memcpy(lr_buffer, opaluid[OPAL_LOCKINGRANGE_ACE_WRLOCKED],
+ OPAL_UID_LENGTH);
+
+ lr_buffer[7] = lkul->session.opal_key.lr;
+
+ memcpy(user_uid, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH);
+
+ user_uid[7] = lkul->session.who;
+
+ err = cmd_start(dev, lr_buffer, opalmethod[OPAL_SET]);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_VALUES);
+
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, 3);
+
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_bytestring(&err, dev,
+ opaluid[OPAL_HALF_UID_AUTHORITY_OBJ_REF],
+ OPAL_UID_LENGTH/2);
+ add_token_bytestring(&err, dev, user_uid, OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_bytestring(&err, dev,
+ opaluid[OPAL_HALF_UID_AUTHORITY_OBJ_REF],
+ OPAL_UID_LENGTH/2);
+ add_token_bytestring(&err, dev, user_uid, OPAL_UID_LENGTH);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_bytestring(&err, dev, opaluid[OPAL_HALF_UID_BOOLEAN_ACE],
+ OPAL_UID_LENGTH/2);
+ add_token_u8(&err, dev, 1);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ if (err) {
+ pr_debug("Error building add user to locking range command.\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int lock_unlock_locking_range(struct opal_dev *dev, void *data)
+{
+ u8 lr_buffer[OPAL_UID_LENGTH];
+ struct opal_lock_unlock *lkul = data;
+ u8 read_locked = 1, write_locked = 1;
+ int err = 0;
+
+ if (build_locking_range(lr_buffer, sizeof(lr_buffer),
+ lkul->session.opal_key.lr) < 0)
+ return -ERANGE;
+
+ switch (lkul->l_state) {
+ case OPAL_RO:
+ read_locked = 0;
+ write_locked = 1;
+ break;
+ case OPAL_RW:
+ read_locked = 0;
+ write_locked = 0;
+ break;
+ case OPAL_LK:
+ /* vars are initialized to locked */
+ break;
+ default:
+ pr_debug("Tried to set an invalid locking state... returning to uland\n");
+ return OPAL_INVAL_PARAM;
+ }
+
+ err = cmd_start(dev, lr_buffer, opalmethod[OPAL_SET]);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_VALUES);
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_READLOCKED);
+ add_token_u8(&err, dev, read_locked);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_WRITELOCKED);
+ add_token_u8(&err, dev, write_locked);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ if (err) {
+ pr_debug("Error building SET command.\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+
+static int lock_unlock_locking_range_sum(struct opal_dev *dev, void *data)
+{
+ u8 lr_buffer[OPAL_UID_LENGTH];
+ u8 read_locked = 1, write_locked = 1;
+ struct opal_lock_unlock *lkul = data;
+ int ret;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+
+ if (build_locking_range(lr_buffer, sizeof(lr_buffer),
+ lkul->session.opal_key.lr) < 0)
+ return -ERANGE;
+
+ switch (lkul->l_state) {
+ case OPAL_RO:
+ read_locked = 0;
+ write_locked = 1;
+ break;
+ case OPAL_RW:
+ read_locked = 0;
+ write_locked = 0;
+ break;
+ case OPAL_LK:
+ /* vars are initialized to locked */
+ break;
+ default:
+ pr_debug("Tried to set an invalid locking state.\n");
+ return OPAL_INVAL_PARAM;
+ }
+ ret = generic_lr_enable_disable(dev, lr_buffer, 1, 1,
+ read_locked, write_locked);
+
+ if (ret < 0) {
+ pr_debug("Error building SET command.\n");
+ return ret;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+static int activate_lsp(struct opal_dev *dev, void *data)
+{
+ struct opal_lr_act *opal_act = data;
+ u8 user_lr[OPAL_UID_LENGTH];
+ int err, i;
+
+ err = cmd_start(dev, opaluid[OPAL_LOCKINGSP_UID],
+ opalmethod[OPAL_ACTIVATE]);
+
+ if (opal_act->sum) {
+ err = build_locking_range(user_lr, sizeof(user_lr),
+ opal_act->lr[0]);
+ if (err)
+ return err;
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u64(&err, dev, OPAL_SUM_SET_LIST);
+
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_bytestring(&err, dev, user_lr, OPAL_UID_LENGTH);
+ for (i = 1; i < opal_act->num_lrs; i++) {
+ user_lr[7] = opal_act->lr[i];
+ add_token_bytestring(&err, dev, user_lr, OPAL_UID_LENGTH);
+ }
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ }
+
+ if (err) {
+ pr_debug("Error building Activate LockingSP command.\n");
+ return err;
+ }
+
+ return finalize_and_send(dev, parse_and_check_status);
+}
+
+/* Determine if we're in the Manufactured Inactive or Active state */
+static int get_lsp_lifecycle(struct opal_dev *dev, void *data)
+{
+ u8 lc_status;
+ int err;
+
+ err = generic_get_column(dev, opaluid[OPAL_LOCKINGSP_UID],
+ OPAL_LIFECYCLE);
+ if (err)
+ return err;
+
+ lc_status = response_get_u64(&dev->parsed, 4);
+ /* 0x08 is Manufactured Inactive */
+ /* 0x09 is Manufactured */
+ if (lc_status != OPAL_MANUFACTURED_INACTIVE) {
+ pr_debug("Couldn't determine the status of the Lifecycle state\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int get_msid_cpin_pin(struct opal_dev *dev, void *data)
+{
+ const char *msid_pin;
+ size_t strlen;
+ int err;
+
+ err = generic_get_column(dev, opaluid[OPAL_C_PIN_MSID], OPAL_PIN);
+ if (err)
+ return err;
+
+ strlen = response_get_string(&dev->parsed, 4, &msid_pin);
+ if (!msid_pin) {
+ pr_debug("Couldn't extract MSID_CPIN from response\n");
+ return OPAL_INVAL_PARAM;
+ }
+
+ dev->prev_data = kmemdup(msid_pin, strlen, GFP_KERNEL);
+ if (!dev->prev_data)
+ return -ENOMEM;
+
+ dev->prev_d_len = strlen;
+
+ return 0;
+}
+
+static int write_table_data(struct opal_dev *dev, void *data)
+{
+ struct opal_read_write_table *write_tbl = data;
+
+ return generic_table_write_data(dev, write_tbl->data, write_tbl->offset,
+ write_tbl->size, write_tbl->table_uid);
+}
+
+static int read_table_data_cont(struct opal_dev *dev)
+{
+ int err;
+ const char *data_read;
+
+ err = parse_and_check_status(dev);
+ if (err)
+ return err;
+
+ dev->prev_d_len = response_get_string(&dev->parsed, 1, &data_read);
+ dev->prev_data = (void *)data_read;
+ if (!dev->prev_data) {
+ pr_debug("%s: Couldn't read data from the table.\n", __func__);
+ return OPAL_INVAL_PARAM;
+ }
+
+ return 0;
+}
+
+/*
+ * IO_BUFFER_LENGTH = 2048
+ * sizeof(header) = 56
+ * No. of Token Bytes in the Response = 11
+ * MAX size of data that can be carried in response buffer
+ * at a time is : 2048 - (56 + 11) = 1981 = 0x7BD.
+ */
+#define OPAL_MAX_READ_TABLE (0x7BD)
+
+static int read_table_data(struct opal_dev *dev, void *data)
+{
+ struct opal_read_write_table *read_tbl = data;
+ int err;
+ size_t off = 0, max_read_size = OPAL_MAX_READ_TABLE;
+ u64 table_len, len;
+ u64 offset = read_tbl->offset, read_size = read_tbl->size - 1;
+ u8 __user *dst;
+
+ err = generic_get_table_info(dev, read_tbl->table_uid, OPAL_TABLE_ROWS);
+ if (err) {
+ pr_debug("Couldn't get the table size\n");
+ return err;
+ }
+
+ table_len = response_get_u64(&dev->parsed, 4);
+
+ /* Check if the user is trying to read from the table limits */
+ if (read_size > table_len || offset > table_len - read_size) {
+ pr_debug("Read size exceeds the Table size limits (%llu vs. %llu)\n",
+ offset + read_size, table_len);
+ return -EINVAL;
+ }
+
+ while (off < read_size) {
+ err = cmd_start(dev, read_tbl->table_uid, opalmethod[OPAL_GET]);
+
+ add_token_u8(&err, dev, OPAL_STARTLIST);
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_STARTROW);
+ add_token_u64(&err, dev, offset + off); /* start row value */
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+
+ add_token_u8(&err, dev, OPAL_STARTNAME);
+ add_token_u8(&err, dev, OPAL_ENDROW);
+
+ len = min(max_read_size, (size_t)(read_size - off));
+ add_token_u64(&err, dev, offset + off + len); /* end row value
+ */
+ add_token_u8(&err, dev, OPAL_ENDNAME);
+ add_token_u8(&err, dev, OPAL_ENDLIST);
+
+ if (err) {
+ pr_debug("Error building read table data command.\n");
+ break;
+ }
+
+ err = finalize_and_send(dev, read_table_data_cont);
+ if (err)
+ break;
+
+ /* len+1: This includes the NULL terminator at the end*/
+ if (dev->prev_d_len > len + 1) {
+ err = -EOVERFLOW;
+ break;
+ }
+
+ dst = (u8 __user *)(uintptr_t)read_tbl->data;
+ if (copy_to_user(dst + off, dev->prev_data, dev->prev_d_len)) {
+ pr_debug("Error copying data to userspace\n");
+ err = -EFAULT;
+ break;
+ }
+ dev->prev_data = NULL;
+
+ off += len;
+ }
+
+ return err;
+}
+
+static int end_opal_session(struct opal_dev *dev, void *data)
+{
+ int err = 0;
+
+ clear_opal_cmd(dev);
+ set_comid(dev, dev->comid);
+ add_token_u8(&err, dev, OPAL_ENDOFSESSION);
+
+ if (err < 0)
+ return err;
+
+ return finalize_and_send(dev, end_session_cont);
+}
+
+static int end_opal_session_error(struct opal_dev *dev)
+{
+ const struct opal_step error_end_session = {
+ end_opal_session,
+ };
+
+ return execute_step(dev, &error_end_session, 0);
+}
+
+static inline void setup_opal_dev(struct opal_dev *dev)
+{
+ dev->tsn = 0;
+ dev->hsn = 0;
+ dev->prev_data = NULL;
+}
+
+static int check_opal_support(struct opal_dev *dev)
+{
+ int ret;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev);
+ ret = opal_discovery0_step(dev);
+ dev->supported = !ret;
+ mutex_unlock(&dev->dev_lock);
+
+ return ret;
+}
+
+static void clean_opal_dev(struct opal_dev *dev)
+{
+
+ struct opal_suspend_data *suspend, *next;
+
+ mutex_lock(&dev->dev_lock);
+ list_for_each_entry_safe(suspend, next, &dev->unlk_lst, node) {
+ list_del(&suspend->node);
+ kfree(suspend);
+ }
+ mutex_unlock(&dev->dev_lock);
+}
+
+void free_opal_dev(struct opal_dev *dev)
+{
+ if (!dev)
+ return;
+
+ clean_opal_dev(dev);
+ kfree(dev->resp);
+ kfree(dev->cmd);
+ kfree(dev);
+}
+EXPORT_SYMBOL(free_opal_dev);
+
+struct opal_dev *init_opal_dev(void *data, sec_send_recv *send_recv)
+{
+ struct opal_dev *dev;
+
+ dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return NULL;
+
+ /*
+ * Presumably DMA-able buffers must be cache-aligned. Kmalloc makes
+ * sure the allocated buffer is DMA-safe in that regard.
+ */
+ dev->cmd = kmalloc(IO_BUFFER_LENGTH, GFP_KERNEL);
+ if (!dev->cmd)
+ goto err_free_dev;
+
+ dev->resp = kmalloc(IO_BUFFER_LENGTH, GFP_KERNEL);
+ if (!dev->resp)
+ goto err_free_cmd;
+
+ INIT_LIST_HEAD(&dev->unlk_lst);
+ mutex_init(&dev->dev_lock);
+ dev->data = data;
+ dev->send_recv = send_recv;
+ if (check_opal_support(dev) != 0) {
+ pr_debug("Opal is not supported on this device\n");
+ goto err_free_resp;
+ }
+
+ return dev;
+
+err_free_resp:
+ kfree(dev->resp);
+
+err_free_cmd:
+ kfree(dev->cmd);
+
+err_free_dev:
+ kfree(dev);
+
+ return NULL;
+}
+EXPORT_SYMBOL(init_opal_dev);
+
+static int opal_secure_erase_locking_range(struct opal_dev *dev,
+ struct opal_session_info *opal_session)
+{
+ const struct opal_step erase_steps[] = {
+ { start_auth_opal_session, opal_session },
+ { get_active_key, &opal_session->opal_key.lr },
+ { gen_key, },
+ { end_opal_session, }
+ };
+ int ret;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev);
+ ret = execute_steps(dev, erase_steps, ARRAY_SIZE(erase_steps));
+ mutex_unlock(&dev->dev_lock);
+
+ return ret;
+}
+
+static int opal_erase_locking_range(struct opal_dev *dev,
+ struct opal_session_info *opal_session)
+{
+ const struct opal_step erase_steps[] = {
+ { start_auth_opal_session, opal_session },
+ { erase_locking_range, opal_session },
+ { end_opal_session, }
+ };
+ int ret;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev);
+ ret = execute_steps(dev, erase_steps, ARRAY_SIZE(erase_steps));
+ mutex_unlock(&dev->dev_lock);
+
+ return ret;
+}
+
+static int opal_enable_disable_shadow_mbr(struct opal_dev *dev,
+ struct opal_mbr_data *opal_mbr)
+{
+ u8 enable_disable = opal_mbr->enable_disable == OPAL_MBR_ENABLE ?
+ OPAL_TRUE : OPAL_FALSE;
+
+ const struct opal_step mbr_steps[] = {
+ { start_admin1LSP_opal_session, &opal_mbr->key },
+ { set_mbr_done, &enable_disable },
+ { end_opal_session, },
+ { start_admin1LSP_opal_session, &opal_mbr->key },
+ { set_mbr_enable_disable, &enable_disable },
+ { end_opal_session, }
+ };
+ int ret;
+
+ if (opal_mbr->enable_disable != OPAL_MBR_ENABLE &&
+ opal_mbr->enable_disable != OPAL_MBR_DISABLE)
+ return -EINVAL;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev);
+ ret = execute_steps(dev, mbr_steps, ARRAY_SIZE(mbr_steps));
+ mutex_unlock(&dev->dev_lock);
+
+ return ret;
+}
+
+static int opal_set_mbr_done(struct opal_dev *dev,
+ struct opal_mbr_done *mbr_done)
+{
+ u8 mbr_done_tf = mbr_done->done_flag == OPAL_MBR_DONE ?
+ OPAL_TRUE : OPAL_FALSE;
+
+ const struct opal_step mbr_steps[] = {
+ { start_admin1LSP_opal_session, &mbr_done->key },
+ { set_mbr_done, &mbr_done_tf },
+ { end_opal_session, }
+ };
+ int ret;
+
+ if (mbr_done->done_flag != OPAL_MBR_DONE &&
+ mbr_done->done_flag != OPAL_MBR_NOT_DONE)
+ return -EINVAL;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev);
+ ret = execute_steps(dev, mbr_steps, ARRAY_SIZE(mbr_steps));
+ mutex_unlock(&dev->dev_lock);
+
+ return ret;
+}
+
+static int opal_write_shadow_mbr(struct opal_dev *dev,
+ struct opal_shadow_mbr *info)
+{
+ const struct opal_step mbr_steps[] = {
+ { start_admin1LSP_opal_session, &info->key },
+ { write_shadow_mbr, info },
+ { end_opal_session, }
+ };
+ int ret;
+
+ if (info->size == 0)
+ return 0;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev);
+ ret = execute_steps(dev, mbr_steps, ARRAY_SIZE(mbr_steps));
+ mutex_unlock(&dev->dev_lock);
+
+ return ret;
+}
+
+static int opal_save(struct opal_dev *dev, struct opal_lock_unlock *lk_unlk)
+{
+ struct opal_suspend_data *suspend;
+
+ suspend = kzalloc(sizeof(*suspend), GFP_KERNEL);
+ if (!suspend)
+ return -ENOMEM;
+
+ suspend->unlk = *lk_unlk;
+ suspend->lr = lk_unlk->session.opal_key.lr;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev);
+ add_suspend_info(dev, suspend);
+ mutex_unlock(&dev->dev_lock);
+
+ return 0;
+}
+
+static int opal_add_user_to_lr(struct opal_dev *dev,
+ struct opal_lock_unlock *lk_unlk)
+{
+ const struct opal_step steps[] = {
+ { start_admin1LSP_opal_session, &lk_unlk->session.opal_key },
+ { add_user_to_lr, lk_unlk },
+ { end_opal_session, }
+ };
+ int ret;
+
+ if (lk_unlk->l_state != OPAL_RO &&
+ lk_unlk->l_state != OPAL_RW) {
+ pr_debug("Locking state was not RO or RW\n");
+ return -EINVAL;
+ }
+
+ if (lk_unlk->session.who < OPAL_USER1 ||
+ lk_unlk->session.who > OPAL_USER9) {
+ pr_debug("Authority was not within the range of users: %d\n",
+ lk_unlk->session.who);
+ return -EINVAL;
+ }
+
+ if (lk_unlk->session.sum) {
+ pr_debug("%s not supported in sum. Use setup locking range\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev);
+ ret = execute_steps(dev, steps, ARRAY_SIZE(steps));
+ mutex_unlock(&dev->dev_lock);
+
+ return ret;
+}
+
+static int opal_reverttper(struct opal_dev *dev, struct opal_key *opal, bool psid)
+{
+ /* controller will terminate session */
+ const struct opal_step revert_steps[] = {
+ { start_SIDASP_opal_session, opal },
+ { revert_tper, }
+ };
+ const struct opal_step psid_revert_steps[] = {
+ { start_PSID_opal_session, opal },
+ { revert_tper, }
+ };
+
+ int ret;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev);
+ if (psid)
+ ret = execute_steps(dev, psid_revert_steps,
+ ARRAY_SIZE(psid_revert_steps));
+ else
+ ret = execute_steps(dev, revert_steps,
+ ARRAY_SIZE(revert_steps));
+ mutex_unlock(&dev->dev_lock);
+
+ /*
+ * If we successfully reverted lets clean
+ * any saved locking ranges.
+ */
+ if (!ret)
+ clean_opal_dev(dev);
+
+ return ret;
+}
+
+static int __opal_lock_unlock(struct opal_dev *dev,
+ struct opal_lock_unlock *lk_unlk)
+{
+ const struct opal_step unlock_steps[] = {
+ { start_auth_opal_session, &lk_unlk->session },
+ { lock_unlock_locking_range, lk_unlk },
+ { end_opal_session, }
+ };
+ const struct opal_step unlock_sum_steps[] = {
+ { start_auth_opal_session, &lk_unlk->session },
+ { lock_unlock_locking_range_sum, lk_unlk },
+ { end_opal_session, }
+ };
+
+ if (lk_unlk->session.sum)
+ return execute_steps(dev, unlock_sum_steps,
+ ARRAY_SIZE(unlock_sum_steps));
+ else
+ return execute_steps(dev, unlock_steps,
+ ARRAY_SIZE(unlock_steps));
+}
+
+static int __opal_set_mbr_done(struct opal_dev *dev, struct opal_key *key)
+{
+ u8 mbr_done_tf = OPAL_TRUE;
+ const struct opal_step mbrdone_step[] = {
+ { start_admin1LSP_opal_session, key },
+ { set_mbr_done, &mbr_done_tf },
+ { end_opal_session, }
+ };
+
+ return execute_steps(dev, mbrdone_step, ARRAY_SIZE(mbrdone_step));
+}
+
+static int opal_lock_unlock(struct opal_dev *dev,
+ struct opal_lock_unlock *lk_unlk)
+{
+ int ret;
+
+ if (lk_unlk->session.who > OPAL_USER9)
+ return -EINVAL;
+
+ mutex_lock(&dev->dev_lock);
+ ret = __opal_lock_unlock(dev, lk_unlk);
+ mutex_unlock(&dev->dev_lock);
+
+ return ret;
+}
+
+static int opal_take_ownership(struct opal_dev *dev, struct opal_key *opal)
+{
+ const struct opal_step owner_steps[] = {
+ { start_anybodyASP_opal_session, },
+ { get_msid_cpin_pin, },
+ { end_opal_session, },
+ { start_SIDASP_opal_session, opal },
+ { set_sid_cpin_pin, opal },
+ { end_opal_session, }
+ };
+ int ret;
+
+ if (!dev)
+ return -ENODEV;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev);
+ ret = execute_steps(dev, owner_steps, ARRAY_SIZE(owner_steps));
+ mutex_unlock(&dev->dev_lock);
+
+ return ret;
+}
+
+static int opal_activate_lsp(struct opal_dev *dev,
+ struct opal_lr_act *opal_lr_act)
+{
+ const struct opal_step active_steps[] = {
+ { start_SIDASP_opal_session, &opal_lr_act->key },
+ { get_lsp_lifecycle, },
+ { activate_lsp, opal_lr_act },
+ { end_opal_session, }
+ };
+ int ret;
+
+ if (!opal_lr_act->num_lrs || opal_lr_act->num_lrs > OPAL_MAX_LRS)
+ return -EINVAL;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev);
+ ret = execute_steps(dev, active_steps, ARRAY_SIZE(active_steps));
+ mutex_unlock(&dev->dev_lock);
+
+ return ret;
+}
+
+static int opal_setup_locking_range(struct opal_dev *dev,
+ struct opal_user_lr_setup *opal_lrs)
+{
+ const struct opal_step lr_steps[] = {
+ { start_auth_opal_session, &opal_lrs->session },
+ { setup_locking_range, opal_lrs },
+ { end_opal_session, }
+ };
+ int ret;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev);
+ ret = execute_steps(dev, lr_steps, ARRAY_SIZE(lr_steps));
+ mutex_unlock(&dev->dev_lock);
+
+ return ret;
+}
+
+static int opal_set_new_pw(struct opal_dev *dev, struct opal_new_pw *opal_pw)
+{
+ const struct opal_step pw_steps[] = {
+ { start_auth_opal_session, &opal_pw->session },
+ { set_new_pw, &opal_pw->new_user_pw },
+ { end_opal_session, }
+ };
+ int ret;
+
+ if (opal_pw->session.who > OPAL_USER9 ||
+ opal_pw->new_user_pw.who > OPAL_USER9)
+ return -EINVAL;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev);
+ ret = execute_steps(dev, pw_steps, ARRAY_SIZE(pw_steps));
+ mutex_unlock(&dev->dev_lock);
+
+ return ret;
+}
+
+static int opal_activate_user(struct opal_dev *dev,
+ struct opal_session_info *opal_session)
+{
+ const struct opal_step act_steps[] = {
+ { start_admin1LSP_opal_session, &opal_session->opal_key },
+ { internal_activate_user, opal_session },
+ { end_opal_session, }
+ };
+ int ret;
+
+ /* We can't activate Admin1 it's active as manufactured */
+ if (opal_session->who < OPAL_USER1 ||
+ opal_session->who > OPAL_USER9) {
+ pr_debug("Who was not a valid user: %d\n", opal_session->who);
+ return -EINVAL;
+ }
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev);
+ ret = execute_steps(dev, act_steps, ARRAY_SIZE(act_steps));
+ mutex_unlock(&dev->dev_lock);
+
+ return ret;
+}
+
+bool opal_unlock_from_suspend(struct opal_dev *dev)
+{
+ struct opal_suspend_data *suspend;
+ bool was_failure = false;
+ int ret = 0;
+
+ if (!dev)
+ return false;
+
+ if (!dev->supported)
+ return false;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev);
+
+ list_for_each_entry(suspend, &dev->unlk_lst, node) {
+ dev->tsn = 0;
+ dev->hsn = 0;
+
+ ret = __opal_lock_unlock(dev, &suspend->unlk);
+ if (ret) {
+ pr_debug("Failed to unlock LR %hhu with sum %d\n",
+ suspend->unlk.session.opal_key.lr,
+ suspend->unlk.session.sum);
+ was_failure = true;
+ }
+
+ if (dev->mbr_enabled) {
+ ret = __opal_set_mbr_done(dev, &suspend->unlk.session.opal_key);
+ if (ret)
+ pr_debug("Failed to set MBR Done in S3 resume\n");
+ }
+ }
+ mutex_unlock(&dev->dev_lock);
+
+ return was_failure;
+}
+EXPORT_SYMBOL(opal_unlock_from_suspend);
+
+static int opal_read_table(struct opal_dev *dev,
+ struct opal_read_write_table *rw_tbl)
+{
+ const struct opal_step read_table_steps[] = {
+ { start_admin1LSP_opal_session, &rw_tbl->key },
+ { read_table_data, rw_tbl },
+ { end_opal_session, }
+ };
+ int ret = 0;
+
+ if (!rw_tbl->size)
+ return ret;
+
+ return execute_steps(dev, read_table_steps,
+ ARRAY_SIZE(read_table_steps));
+}
+
+static int opal_write_table(struct opal_dev *dev,
+ struct opal_read_write_table *rw_tbl)
+{
+ const struct opal_step write_table_steps[] = {
+ { start_admin1LSP_opal_session, &rw_tbl->key },
+ { write_table_data, rw_tbl },
+ { end_opal_session, }
+ };
+ int ret = 0;
+
+ if (!rw_tbl->size)
+ return ret;
+
+ return execute_steps(dev, write_table_steps,
+ ARRAY_SIZE(write_table_steps));
+}
+
+static int opal_generic_read_write_table(struct opal_dev *dev,
+ struct opal_read_write_table *rw_tbl)
+{
+ int ret, bit_set;
+
+ mutex_lock(&dev->dev_lock);
+ setup_opal_dev(dev);
+
+ bit_set = fls64(rw_tbl->flags) - 1;
+ switch (bit_set) {
+ case OPAL_READ_TABLE:
+ ret = opal_read_table(dev, rw_tbl);
+ break;
+ case OPAL_WRITE_TABLE:
+ ret = opal_write_table(dev, rw_tbl);
+ break;
+ default:
+ pr_debug("Invalid bit set in the flag (%016llx).\n",
+ rw_tbl->flags);
+ ret = -EINVAL;
+ break;
+ }
+
+ mutex_unlock(&dev->dev_lock);
+
+ return ret;
+}
+
+int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *arg)
+{
+ void *p;
+ int ret = -ENOTTY;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+ if (!dev)
+ return -ENOTSUPP;
+ if (!dev->supported)
+ return -ENOTSUPP;
+
+ p = memdup_user(arg, _IOC_SIZE(cmd));
+ if (IS_ERR(p))
+ return PTR_ERR(p);
+
+ switch (cmd) {
+ case IOC_OPAL_SAVE:
+ ret = opal_save(dev, p);
+ break;
+ case IOC_OPAL_LOCK_UNLOCK:
+ ret = opal_lock_unlock(dev, p);
+ break;
+ case IOC_OPAL_TAKE_OWNERSHIP:
+ ret = opal_take_ownership(dev, p);
+ break;
+ case IOC_OPAL_ACTIVATE_LSP:
+ ret = opal_activate_lsp(dev, p);
+ break;
+ case IOC_OPAL_SET_PW:
+ ret = opal_set_new_pw(dev, p);
+ break;
+ case IOC_OPAL_ACTIVATE_USR:
+ ret = opal_activate_user(dev, p);
+ break;
+ case IOC_OPAL_REVERT_TPR:
+ ret = opal_reverttper(dev, p, false);
+ break;
+ case IOC_OPAL_LR_SETUP:
+ ret = opal_setup_locking_range(dev, p);
+ break;
+ case IOC_OPAL_ADD_USR_TO_LR:
+ ret = opal_add_user_to_lr(dev, p);
+ break;
+ case IOC_OPAL_ENABLE_DISABLE_MBR:
+ ret = opal_enable_disable_shadow_mbr(dev, p);
+ break;
+ case IOC_OPAL_MBR_DONE:
+ ret = opal_set_mbr_done(dev, p);
+ break;
+ case IOC_OPAL_WRITE_SHADOW_MBR:
+ ret = opal_write_shadow_mbr(dev, p);
+ break;
+ case IOC_OPAL_ERASE_LR:
+ ret = opal_erase_locking_range(dev, p);
+ break;
+ case IOC_OPAL_SECURE_ERASE_LR:
+ ret = opal_secure_erase_locking_range(dev, p);
+ break;
+ case IOC_OPAL_PSID_REVERT_TPR:
+ ret = opal_reverttper(dev, p, true);
+ break;
+ case IOC_OPAL_GENERIC_TABLE_RW:
+ ret = opal_generic_read_write_table(dev, p);
+ break;
+ default:
+ break;
+ }
+
+ kfree(p);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(sed_ioctl);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-07 01:58:34 +0000