From 5ebbfc8c29eb5eb6dfdab853bdb2a622e0533d7e Mon Sep 17 00:00:00 2001
From: Li ZhiGang <lizhigang@kylinos.cn>
Date: Mon, 29 Mar 2021 10:07:19 +0800
Subject: [PATCH] staging: TCM: add GMJS(Nationz Tech) TCM driver.
driver inclusion
category: feature
bugzilla: 50797
CVE: NA
-------------------------------------------------------------------------
Nationz Tech TCM are used for trusted computing, the chip attached via SPI or LPC.
We have a brief verify/test with this driver on KunPeng920 + openEuler system, with externally compiled module.
Signed-off-by: Li ZhiGang <lizhigang@kylinos.cn>
Acked-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Cheng Jian <cj.chengjian@huawei.com>
---
drivers/staging/Kconfig | 2 +
drivers/staging/Makefile | 1 +
drivers/staging/gmjstcm/Kconfig | 21 +
drivers/staging/gmjstcm/Makefile | 3 +
drivers/staging/gmjstcm/tcm.c | 949 ++++++++++++++++++++++++++
drivers/staging/gmjstcm/tcm.h | 122 ++++
drivers/staging/gmjstcm/tcm_tis_spi.c | 847 +++++++++++++++++++++++
7 files changed, 1945 insertions(+)
create mode 100644 drivers/staging/gmjstcm/Kconfig
create mode 100644 drivers/staging/gmjstcm/Makefile
create mode 100644 drivers/staging/gmjstcm/tcm.c
create mode 100644 drivers/staging/gmjstcm/tcm.h
create mode 100644 drivers/staging/gmjstcm/tcm_tis_spi.c
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index 1abf76be2aa8..d51fa4f4e7ca 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -126,4 +126,6 @@ source "drivers/staging/axis-fifo/Kconfig"
source "drivers/staging/erofs/Kconfig"
+source "drivers/staging/gmjstcm/Kconfig"
+
endif # STAGING
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index ab0cbe8815b1..1562b51985d0 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -53,3 +53,4 @@ obj-$(CONFIG_SOC_MT7621) += mt7621-dts/
obj-$(CONFIG_STAGING_GASKET_FRAMEWORK) += gasket/
obj-$(CONFIG_XIL_AXIS_FIFO) += axis-fifo/
obj-$(CONFIG_EROFS_FS) += erofs/
+obj-$(CONFIG_GMJS_TCM) += gmjstcm/
diff --git a/drivers/staging/gmjstcm/Kconfig b/drivers/staging/gmjstcm/Kconfig
new file mode 100644
index 000000000000..5b5397ae1832
--- /dev/null
+++ b/drivers/staging/gmjstcm/Kconfig
@@ -0,0 +1,21 @@
+menu "GMJS TCM support"
+
+config GMJS_TCM
+ bool
+
+config GMJS_TCM_CORE
+ tristate "GMJS TCM core support"
+ depends on ARM64 || MIPS
+ default m
+ select GMJS_TCM
+ help
+ GMJS TCM core support.
+
+config GMJS_TCM_SPI
+ tristate "GMJS TCM support on SPI interface"
+ depends on GMJS_TCM_CORE && SPI_MASTER
+ default m
+ help
+ GMJS TCM support on SPI interface.
+
+endmenu
diff --git a/drivers/staging/gmjstcm/Makefile b/drivers/staging/gmjstcm/Makefile
new file mode 100644
index 000000000000..369f01119372
--- /dev/null
+++ b/drivers/staging/gmjstcm/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_GMJS_TCM_CORE) += tcm_core.o
+tcm_core-objs := tcm.o
+obj-$(CONFIG_GMJS_TCM_SPI) += tcm_tis_spi.o
diff --git a/drivers/staging/gmjstcm/tcm.c b/drivers/staging/gmjstcm/tcm.c
new file mode 100644
index 000000000000..5c41bfa8b423
--- /dev/null
+++ b/drivers/staging/gmjstcm/tcm.c
@@ -0,0 +1,949 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2009 Nationz Technologies Inc.
+ *
+ * Description: Exprot symbol for tcm_tis module
+ *
+ * Major Function: public write read register function etc.
+ *
+ */
+
+#include <linux/sched.h>
+#include <linux/poll.h>
+#include <linux/spinlock.h>
+#include <linux/timer.h>
+#include "tcm.h"
+
+/*
+ * const var
+ */
+enum tcm_const {
+ TCM_MINOR = 224, /* officially assigned */
+ TCM_BUFSIZE = 2048, /* Buffer Size */
+ TCM_NUM_DEVICES = 256, /* Max supporting tcm device number */
+};
+
+/*
+ * CMD duration
+ */
+enum tcm_duration {
+ TCM_SHORT = 0,
+ TCM_MEDIUM = 1,
+ TCM_LONG = 2,
+ TCM_UNDEFINED,
+};
+
+/* Max Total of Command Number */
+#define TCM_MAX_ORDINAL 88 /*243*/
+
+static LIST_HEAD(tcm_chip_list);
+static DEFINE_SPINLOCK(driver_lock); /* spin lock */
+static DECLARE_BITMAP(dev_mask, TCM_NUM_DEVICES);
+
+typedef struct tagTCM_Command {
+ u8 ordinal;
+ u8 DURATION;
+} TCM_Command;
+
+static const TCM_Command TCM_Command_List[TCM_MAX_ORDINAL + 1] = {
+ {/*TCM_ORD_ActivateIdentity, */122, 1},
+ {/*TCM_ORD_CertifyKey, */50, 1},
+ {/*TCM_ORD_CertifyKeyM, */51, 1},
+ {/*TCM_ORD_ChangeAuth, */12, 1},
+ {/*TCM_ORD_ChangeAuthOwner, */16, 0},
+ {/*TCM_ORD_ContinueSelfTeSt, */83, 2},
+ {/*TCM_ORD_CreateCounter, */220, 0},
+ {/*TCM_ORD_CreateWrapKey, */31, 2},
+ {/*TCM_ORD_DiSableForceClear, */94, 0},
+ {/*TCM_ORD_DiSableOwnerClear, */92, 0},
+ {/*TCM_ORD_EStabliShTranSport, */230, 0},
+ {/*TCM_ORD_ExecuteTranSport, */231, 2},
+ {/*TCM_ORD_Extend, */20, 0},
+ {/*TCM_ORD_FieldUpgrade, */170, 2},
+ {/*TCM_ORD_FluShSpecific, */186, 0},
+ {/*TCM_ORD_ForceClear, */93, 0},
+ {/*TCM_ORD_GetAuditDigeSt, */133, 0},
+ {/*TCM_ORD_GetAuditDigeStSigned, */134, 1},
+ {/*TCM_ORD_GetCapability, */101, 0},
+ {/*TCM_ORD_GetPubKey, */33, 0},
+ {/*TCM_ORD_GetRandoM, */70, 0},
+ {/*TCM_ORD_GetTeStReSult, */84, 0},
+ {/*TCM_ORD_GetTickS, */241, 0},
+ {/*TCM_ORD_IncreMentCounter, */221, 0},
+ {/*TCM_ORD_LoadContext, */185, 1},
+ {/*TCM_ORD_MakeIdentity, */121, 2},
+ {/*TCM_ORD_NV_DefineSpace, */204, 0},
+ {/*TCM_ORD_NV_ReadValue, */207, 0},
+ {/*TCM_ORD_NV_ReadValueAuth, */208, 0},
+ {/*TCM_ORD_NV_WriteValue, */205, 0},
+ {/*TCM_ORD_NV_WriteValueAuth, */206, 0},
+ {/*TCM_ORD_OwnerClear, */91, 0},
+ {/*TCM_ORD_OwnerReadInternalPub, */129, 0},
+ {/*TCM_ORD_OwnerSetDiSable, */110, 0},
+ {/*TCM_ORD_PCR_ReSet, */200, 0},
+ {/*TCM_ORD_PcrRead, */21, 0},
+ {/*TCM_ORD_PhySicalDiSable, */112, 0},
+ {/*TCM_ORD_PhySicalEnable, */111, 0},
+ {/*TCM_ORD_PhySicalSetDeactivated, */114, 0},
+ {/*TCM_ORD_Quote, */22, 1},
+ {/*TCM_ORD_QuoteM, */62, 1},
+ {/*TCM_ORD_ReadCounter, */222, 0},
+ {/*TCM_ORD_ReadPubek, */124, 0},
+ {/*TCM_ORD_ReleaSeCounter, */223, 0},
+ {/*TCM_ORD_ReleaSeCounterOwner, */224, 0},
+ {/*TCM_ORD_ReleaSeTranSportSigned, */232, 1},
+ {/*TCM_ORD_ReSetLockValue, */64, 0},
+ {/*TCM_ORD_RevokeTruSt, */128, 0},
+ {/*TCM_ORD_SaveContext, */184, 1},
+ {/*TCM_ORD_SaveState, */152, 1},
+ {/*TCM_ORD_Seal, */23, 1},
+ {/*TCM_ORD_Sealx, */61, 1},
+ {/*TCM_ORD_SelfTeStFull, */80, 2},
+ {/*TCM_ORD_SetCapability, */63, 0},
+ {/*TCM_ORD_SetOperatorAuth, */116, 0},
+ {/*TCM_ORD_SetOrdinalAuditStatuS, */141, 0},
+ {/*TCM_ORD_SetOwnerInStall, */113, 0},
+ {/*TCM_ORD_SetTeMpDeactivated, */115, 0},
+ {/*TCM_ORD_Sign, */60, 1},
+ {/*TCM_ORD_Startup, */153, 0},
+ {/*TCM_ORD_TakeOwnerShip, */13, 1},
+ {/*TCM_ORD_TickStaMpBlob, */242, 1},
+ {/*TCM_ORD_UnSeal, */24, 1},
+ {/*TSC_ORD_PhySicalPreSence, */10, 0},
+ {/*TSC_ORD_ReSetEStabliShMentBit, */11, 0},
+ {/*TCM_ORD_WrapKey, */189, 2},
+ {/*TCM_ORD_APcreate, */191, 0},
+ {/*TCM_ORD_APTerMinate, */192, 0},
+ {/*TCM_ORD_CreateMigratedBlob, */193, 1},
+ {/*TCM_ORD_ConvertMigratedBlob, */194, 1},
+ {/*TCM_ORD_AuthorizeMigrationKey, */195, 0},
+ {/*TCM_ORD_SMS4Encrypt, */197, 1},
+ {/*TCM_ORD_SMS4Decrypt, */198, 1},
+ {/*TCM_ORD_ReadEKCert, */199, 1},
+ {/*TCM_ORD_WriteEKCert, */233, 1},
+ {/*TCM_ORD_SCHStart, */234, 0},
+ {/*TCM_ORD_SCHUpdata, */235, 0},
+ {/*TCM_ORD_SCHCoMplete, */236, 0},
+ {/*TCM_ORD_SCHCoMpleteExtend, */237, 0},
+ {/*TCM_ORD_ECCDecrypt, */238, 1},
+ {/*TCM_ORD_LoadKey, */239, 1},
+ {/*TCM_ORD_CreateEndorSeMentKeyPair, */120, 2},
+ {/*TCM_ORD_CreateRevocableEK, */127, 2},
+ {/*TCM_ORD_ReleaSeECCExchangeSeSSion, */174, 1},
+ {/*TCM_ORD_CreateECCExchangeSeSSion, */175, 1},
+ {/*TCM_ORD_GetKeyECCExchangeSeSSion, */176, 1},
+ {/*TCM_ORD_ActivatePEK, */217, 1},
+ {/*TCM_ORD_ActivatePEKCert, */218, 1},
+ {0, 0}
+};
+
+static void user_reader_timeout(struct timer_list *t)
+{
+ struct tcm_chip *chip = from_timer(chip, t, user_read_timer);
+
+ schedule_work(&chip->work);
+}
+
+static void timeout_work(struct work_struct *work)
+{
+ struct tcm_chip *chip = container_of(work, struct tcm_chip, work);
+
+ mutex_lock(&chip->buffer_mutex);
+ atomic_set(&chip->data_pending, 0);
+ memset(chip->data_buffer, 0, TCM_BUFSIZE);
+ mutex_unlock(&chip->buffer_mutex);
+}
+
+unsigned long tcm_calc_ordinal_duration(struct tcm_chip *chip,
+ u32 ordinal)
+{
+ int duration_idx = TCM_UNDEFINED;
+ int duration = 0;
+ int i = 0;
+
+ for (i = 0; i < TCM_MAX_ORDINAL; i++) {
+ if (ordinal == TCM_Command_List[i].ordinal) {
+ duration_idx = TCM_Command_List[i].DURATION;
+ break;
+ }
+ }
+
+ if (duration_idx != TCM_UNDEFINED)
+ duration = chip->vendor.duration[duration_idx];
+ if (duration <= 0)
+ return 2 * 60 * HZ;
+ else
+ return duration;
+}
+EXPORT_SYMBOL_GPL(tcm_calc_ordinal_duration);
+
+/*
+ * Internal kernel interface to transmit TCM commands
+ * buff format: TAG(2 bytes) + Total Size(4 bytes ) +
+ * Command Ordinal(4 bytes ) + ......
+ */
+static ssize_t tcm_transmit(struct tcm_chip *chip, const char *buf,
+ size_t bufsiz)
+{
+ ssize_t rc = 0;
+ u32 count = 0, ordinal = 0;
+ unsigned long stop = 0;
+
+ count = be32_to_cpu(*((__be32 *)(buf + 2))); /* buff size */
+ ordinal = be32_to_cpu(*((__be32 *)(buf + 6))); /* command ordinal */
+
+ if (count == 0)
+ return -ENODATA;
+ if (count > bufsiz) { /* buff size err ,invalid buff stream */
+ dev_err(chip->dev, "invalid count value %x, %zx\n",
+ count, bufsiz);
+ return -E2BIG;
+ }
+
+ mutex_lock(&chip->tcm_mutex); /* enter mutex */
+
+ rc = chip->vendor.send(chip, (u8 *)buf, count);
+ if (rc < 0) {
+ dev_err(chip->dev, "%s: tcm_send: error %zd\n",
+ __func__, rc);
+ goto out;
+ }
+
+ if (chip->vendor.irq)
+ goto out_recv;
+
+ stop = jiffies + tcm_calc_ordinal_duration(chip,
+ ordinal); /* cmd duration */
+ do {
+ u8 status = chip->vendor.status(chip);
+
+ if ((status & chip->vendor.req_complete_mask) ==
+ chip->vendor.req_complete_val)
+ goto out_recv;
+
+ if ((status == chip->vendor.req_canceled)) {
+ dev_err(chip->dev, "Operation Canceled\n");
+ rc = -ECANCELED;
+ goto out;
+ }
+
+ msleep(TCM_TIMEOUT); /* CHECK */
+ rmb();
+ } while (time_before(jiffies, stop));
+ /* time out */
+ chip->vendor.cancel(chip);
+ dev_err(chip->dev, "Operation Timed out\n");
+ rc = -ETIME;
+ goto out;
+
+out_recv:
+ rc = chip->vendor.recv(chip, (u8 *)buf, bufsiz);
+ if (rc < 0)
+ dev_err(chip->dev, "%s: tcm_recv: error %zd\n",
+ __func__, rc);
+out:
+ mutex_unlock(&chip->tcm_mutex);
+ return rc;
+}
+
+#define TCM_DIGEST_SIZE 32
+#define TCM_ERROR_SIZE 10
+#define TCM_RET_CODE_IDX 6
+#define TCM_GET_CAP_RET_SIZE_IDX 10
+#define TCM_GET_CAP_RET_UINT32_1_IDX 14
+#define TCM_GET_CAP_RET_UINT32_2_IDX 18
+#define TCM_GET_CAP_RET_UINT32_3_IDX 22
+#define TCM_GET_CAP_RET_UINT32_4_IDX 26
+#define TCM_GET_CAP_PERM_DISABLE_IDX 16
+#define TCM_GET_CAP_PERM_INACTIVE_IDX 18
+#define TCM_GET_CAP_RET_BOOL_1_IDX 14
+#define TCM_GET_CAP_TEMP_INACTIVE_IDX 16
+
+#define TCM_CAP_IDX 13
+#define TCM_CAP_SUBCAP_IDX 21
+
+enum tcm_capabilities {
+ TCM_CAP_FLAG = 4,
+ TCM_CAP_PROP = 5,
+};
+
+enum tcm_sub_capabilities {
+ TCM_CAP_PROP_PCR = 0x1, /* tcm 0x101 */
+ TCM_CAP_PROP_MANUFACTURER = 0x3, /* tcm 0x103 */
+ TCM_CAP_FLAG_PERM = 0x8, /* tcm 0x108 */
+ TCM_CAP_FLAG_VOL = 0x9, /* tcm 0x109 */
+ TCM_CAP_PROP_OWNER = 0x11, /* tcm 0x101 */
+ TCM_CAP_PROP_TIS_TIMEOUT = 0x15, /* tcm 0x115 */
+ TCM_CAP_PROP_TIS_DURATION = 0x20, /* tcm 0x120 */
+};
+
+/*
+ * This is a semi generic GetCapability command for use
+ * with the capability type TCM_CAP_PROP or TCM_CAP_FLAG
+ * and their associated sub_capabilities.
+ */
+
+static const u8 tcm_cap[] = {
+ 0, 193, /* TCM_TAG_RQU_COMMAND 0xc1*/
+ 0, 0, 0, 22, /* length */
+ 0, 0, 128, 101, /* TCM_ORD_GetCapability */
+ 0, 0, 0, 0, /* TCM_CAP_<TYPE> */
+ 0, 0, 0, 4, /* TCM_CAP_SUB_<TYPE> size */
+ 0, 0, 1, 0 /* TCM_CAP_SUB_<TYPE> */
+};
+
+static ssize_t transmit_cmd(struct tcm_chip *chip, u8 *data, int len,
+ char *desc)
+{
+ int err = 0;
+
+ len = tcm_transmit(chip, data, len);
+ if (len < 0)
+ return len;
+ if (len == TCM_ERROR_SIZE) {
+ err = be32_to_cpu(*((__be32 *)(data + TCM_RET_CODE_IDX)));
+ dev_dbg(chip->dev, "A TCM error (%d) occurred %s\n", err, desc);
+ return err;
+ }
+ return 0;
+}
+
+/*
+ * Get default timeouts value form tcm by GetCapability with TCM_CAP_PROP_TIS_TIMEOUT prop
+ */
+void tcm_get_timeouts(struct tcm_chip *chip)
+{
+ u8 data[max_t(int, ARRAY_SIZE(tcm_cap), 30)];
+ ssize_t rc = 0;
+ u32 timeout = 0;
+
+ memcpy(data, tcm_cap, sizeof(tcm_cap));
+ data[TCM_CAP_IDX] = TCM_CAP_PROP;
+ data[TCM_CAP_SUBCAP_IDX] = TCM_CAP_PROP_TIS_TIMEOUT;
+
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attempting to determine the timeouts");
+ if (rc)
+ goto duration;
+
+ if (be32_to_cpu(*((__be32 *)(data + TCM_GET_CAP_RET_SIZE_IDX))) !=
+ 4 * sizeof(u32))
+ goto duration;
+
+ /* Don't overwrite default if value is 0 */
+ timeout = be32_to_cpu(*((__be32 *)(data + TCM_GET_CAP_RET_UINT32_1_IDX)));
+ if (timeout)
+ chip->vendor.timeout_a = msecs_to_jiffies(timeout);
+ timeout = be32_to_cpu(*((__be32 *)(data + TCM_GET_CAP_RET_UINT32_2_IDX)));
+ if (timeout)
+ chip->vendor.timeout_b = msecs_to_jiffies(timeout);
+ timeout = be32_to_cpu(*((__be32 *)(data + TCM_GET_CAP_RET_UINT32_3_IDX)));
+ if (timeout)
+ chip->vendor.timeout_c = msecs_to_jiffies(timeout);
+ timeout = be32_to_cpu(*((__be32 *)(data + TCM_GET_CAP_RET_UINT32_4_IDX)));
+ if (timeout)
+ chip->vendor.timeout_d = msecs_to_jiffies(timeout);
+
+duration:
+ memcpy(data, tcm_cap, sizeof(tcm_cap));
+ data[TCM_CAP_IDX] = TCM_CAP_PROP;
+ data[TCM_CAP_SUBCAP_IDX] = TCM_CAP_PROP_TIS_DURATION;
+
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attempting to determine the durations");
+ if (rc)
+ return;
+
+ if (be32_to_cpu(*((__be32 *)(data + TCM_GET_CAP_RET_SIZE_IDX))) !=
+ 3 * sizeof(u32))
+ return;
+
+ chip->vendor.duration[TCM_SHORT] =
+ msecs_to_jiffies(be32_to_cpu(*((__be32 *)(data +
+ TCM_GET_CAP_RET_UINT32_1_IDX))));
+ chip->vendor.duration[TCM_MEDIUM] =
+ msecs_to_jiffies(be32_to_cpu(*((__be32 *)(data +
+ TCM_GET_CAP_RET_UINT32_2_IDX))));
+ chip->vendor.duration[TCM_LONG] =
+ msecs_to_jiffies(be32_to_cpu(*((__be32 *)(data +
+ TCM_GET_CAP_RET_UINT32_3_IDX))));
+}
+EXPORT_SYMBOL_GPL(tcm_get_timeouts);
+
+ssize_t tcm_show_enabled(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ u8 data[max_t(int, ARRAY_SIZE(tcm_cap), 35)];
+ ssize_t rc = 0;
+ struct tcm_chip *chip = dev_get_drvdata(dev);
+
+ if (chip == NULL)
+ return -ENODEV;
+
+ memcpy(data, tcm_cap, sizeof(tcm_cap));
+ data[TCM_CAP_IDX] = TCM_CAP_FLAG;
+ data[TCM_CAP_SUBCAP_IDX] = TCM_CAP_FLAG_PERM;
+
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attemtping to determine the permanent state");
+ if (rc)
+ return 0;
+ if (data[TCM_GET_CAP_PERM_DISABLE_IDX])
+ return sprintf(buf, "disable\n");
+ else
+ return sprintf(buf, "enable\n");
+}
+EXPORT_SYMBOL_GPL(tcm_show_enabled);
+
+ssize_t tcm_show_active(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ u8 data[max_t(int, ARRAY_SIZE(tcm_cap), 35)];
+ ssize_t rc = 0;
+ struct tcm_chip *chip = dev_get_drvdata(dev);
+
+ if (chip == NULL)
+ return -ENODEV;
+
+ memcpy(data, tcm_cap, sizeof(tcm_cap));
+ data[TCM_CAP_IDX] = TCM_CAP_FLAG;
+ data[TCM_CAP_SUBCAP_IDX] = TCM_CAP_FLAG_PERM;
+
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attemtping to determine the permanent state");
+ if (rc)
+ return 0;
+ if (data[TCM_GET_CAP_PERM_INACTIVE_IDX])
+ return sprintf(buf, "deactivated\n");
+ else
+ return sprintf(buf, "activated\n");
+}
+EXPORT_SYMBOL_GPL(tcm_show_active);
+
+ssize_t tcm_show_owned(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ u8 data[sizeof(tcm_cap)];
+ ssize_t rc = 0;
+ struct tcm_chip *chip = dev_get_drvdata(dev);
+
+ if (chip == NULL)
+ return -ENODEV;
+
+ memcpy(data, tcm_cap, sizeof(tcm_cap));
+ data[TCM_CAP_IDX] = TCM_CAP_PROP;
+ data[TCM_CAP_SUBCAP_IDX] = TCM_CAP_PROP_OWNER;
+
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attempting to determine the owner state");
+ if (rc)
+ return 0;
+ if (data[TCM_GET_CAP_RET_BOOL_1_IDX])
+ return sprintf(buf, "Owner installed\n");
+ else
+ return sprintf(buf, "Owner have not installed\n");
+}
+EXPORT_SYMBOL_GPL(tcm_show_owned);
+
+ssize_t tcm_show_temp_deactivated(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ u8 data[sizeof(tcm_cap)];
+ ssize_t rc = 0;
+ struct tcm_chip *chip = dev_get_drvdata(dev);
+
+ if (chip == NULL)
+ return -ENODEV;
+
+ memcpy(data, tcm_cap, sizeof(tcm_cap));
+ data[TCM_CAP_IDX] = TCM_CAP_FLAG;
+ data[TCM_CAP_SUBCAP_IDX] = TCM_CAP_FLAG_VOL;
+
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attempting to determine the temporary state");
+ if (rc)
+ return 0;
+ if (data[TCM_GET_CAP_TEMP_INACTIVE_IDX])
+ return sprintf(buf, "Temp deactivated\n");
+ else
+ return sprintf(buf, "activated\n");
+}
+EXPORT_SYMBOL_GPL(tcm_show_temp_deactivated);
+
+static const u8 pcrread[] = {
+ 0, 193, /* TCM_TAG_RQU_COMMAND */
+ 0, 0, 0, 14, /* length */
+ 0, 0, 128, 21, /* TCM_ORD_PcrRead */
+ 0, 0, 0, 0 /* PCR index */
+};
+
+ssize_t tcm_show_pcrs(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ u8 data[1024];
+ ssize_t rc = 0;
+ int i = 0, j = 0, num_pcrs = 0;
+ __be32 index = 0;
+ char *str = buf;
+ struct tcm_chip *chip = dev_get_drvdata(dev);
+
+ if (chip == NULL)
+ return -ENODEV;
+
+ memcpy(data, tcm_cap, sizeof(tcm_cap));
+ data[TCM_CAP_IDX] = TCM_CAP_PROP;
+ data[TCM_CAP_SUBCAP_IDX] = TCM_CAP_PROP_PCR;
+
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attempting to determine the number of PCRS");
+ if (rc)
+ return 0;
+
+ num_pcrs = be32_to_cpu(*((__be32 *)(data + 14)));
+ for (i = 0; i < num_pcrs; i++) {
+ memcpy(data, pcrread, sizeof(pcrread));
+ index = cpu_to_be32(i);
+ memcpy(data + 10, &index, 4);
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attempting to read a PCR");
+ if (rc)
+ goto out;
+ str += sprintf(str, "PCR-%02d: ", i);
+ for (j = 0; j < TCM_DIGEST_SIZE; j++)
+ str += sprintf(str, "%02X ", *(data + 10 + j));
+ str += sprintf(str, "\n");
+ memset(data, 0, 1024);
+ }
+out:
+ return str - buf;
+}
+EXPORT_SYMBOL_GPL(tcm_show_pcrs);
+
+#define READ_PUBEK_RESULT_SIZE 128
+static const u8 readpubek[] = {
+ 0, 193, /* TCM_TAG_RQU_COMMAND */
+ 0, 0, 0, 42, /* length */
+ 0, 0, 128, 124, /* TCM_ORD_ReadPubek */
+ 0, 0, 0, 0, 0, 0, 0, 0, /* NONCE */
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+ssize_t tcm_show_pubek(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ u8 data[READ_PUBEK_RESULT_SIZE] = {0};
+ ssize_t err = 0;
+ int i = 0, rc = 0;
+ char *str = buf;
+ struct tcm_chip *chip = dev_get_drvdata(dev);
+
+ if (chip == NULL)
+ return -ENODEV;
+
+ memcpy(data, readpubek, sizeof(readpubek));
+
+ err = transmit_cmd(chip, data, sizeof(data),
+ "attempting to read the PUBEK");
+ if (err)
+ goto out;
+
+ str += sprintf(str, "PUBEK:");
+ for (i = 0 ; i < 65 ; i++) {
+ if ((i) % 16 == 0)
+ str += sprintf(str, "\n");
+ str += sprintf(str, "%02X ", data[i+10]);
+ }
+
+ str += sprintf(str, "\n");
+out:
+ rc = str - buf;
+ return rc;
+}
+EXPORT_SYMBOL_GPL(tcm_show_pubek);
+
+#define CAP_VERSION_1_1 6
+#define CAP_VERSION_1_2 0x1A
+#define CAP_VERSION_IDX 13
+static const u8 cap_version[] = {
+ 0, 193, /* TCM_TAG_RQU_COMMAND */
+ 0, 0, 0, 18, /* length */
+ 0, 0, 128, 101, /* TCM_ORD_GetCapability */
+ 0, 0, 0, 0,
+ 0, 0, 0, 0
+};
+
+ssize_t tcm_show_caps(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ u8 data[max_t(int, max(ARRAY_SIZE(tcm_cap), ARRAY_SIZE(cap_version)), 30)];
+ ssize_t rc = 0;
+ char *str = buf;
+ struct tcm_chip *chip = dev_get_drvdata(dev);
+
+ if (chip == NULL)
+ return -ENODEV;
+
+ memcpy(data, tcm_cap, sizeof(tcm_cap));
+ data[TCM_CAP_IDX] = TCM_CAP_PROP;
+ data[TCM_CAP_SUBCAP_IDX] = TCM_CAP_PROP_MANUFACTURER;
+
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attempting to determine the manufacturer");
+ if (rc)
+ return 0;
+
+ str += sprintf(str, "Manufacturer: 0x%x\n",
+ be32_to_cpu(*((__be32 *)(data + TCM_GET_CAP_RET_UINT32_1_IDX))));
+
+ memcpy(data, cap_version, sizeof(cap_version));
+ data[CAP_VERSION_IDX] = CAP_VERSION_1_1;
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attempting to determine the 1.1 version");
+ if (rc)
+ goto out;
+
+ str += sprintf(str, "Firmware version: %02X.%02X.%02X.%02X\n",
+ (int)data[14], (int)data[15], (int)data[16],
+ (int)data[17]);
+
+out:
+ return str - buf;
+}
+EXPORT_SYMBOL_GPL(tcm_show_caps);
+
+ssize_t tcm_store_cancel(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct tcm_chip *chip = dev_get_drvdata(dev);
+
+ if (chip == NULL)
+ return 0;
+
+ chip->vendor.cancel(chip);
+ return count;
+}
+EXPORT_SYMBOL_GPL(tcm_store_cancel);
+
+/*
+ * Device file system interface to the TCM
+ * when App call file open in usr space ,this func will respone
+ */
+int tcm_open(struct inode *inode, struct file *file)
+{
+ int rc = 0, minor = iminor(inode);
+ struct tcm_chip *chip = NULL, *pos = NULL;
+
+ spin_lock(&driver_lock);
+
+ list_for_each_entry(pos, &tcm_chip_list, list) {
+ if (pos->vendor.miscdev.minor == minor) {
+ chip = pos;
+ break;
+ }
+ }
+
+ if (chip == NULL) {
+ rc = -ENODEV;
+ goto err_out;
+ }
+
+ if (chip->num_opens) {
+ dev_dbg(chip->dev, "Another process owns this TCM\n");
+ rc = -EBUSY;
+ goto err_out;
+ }
+
+ chip->num_opens++;
+ get_device(chip->dev);
+
+ spin_unlock(&driver_lock);
+
+ chip->data_buffer = kmalloc(TCM_BUFSIZE * sizeof(u8), GFP_KERNEL);
+ if (chip->data_buffer == NULL) {
+ chip->num_opens--;
+ put_device(chip->dev);
+ return -ENOMEM;
+ }
+
+ atomic_set(&chip->data_pending, 0);
+
+ file->private_data = chip;
+ return 0;
+
+err_out:
+ spin_unlock(&driver_lock);
+ return rc;
+}
+EXPORT_SYMBOL_GPL(tcm_open);
+
+int tcm_release(struct inode *inode, struct file *file)
+{
+ struct tcm_chip *chip = file->private_data;
+
+ spin_lock(&driver_lock);
+ file->private_data = NULL;
+ chip->num_opens--;
+ del_singleshot_timer_sync(&chip->user_read_timer);
+ flush_work(&chip->work);
+ atomic_set(&chip->data_pending, 0);
+ put_device(chip->dev);
+ kfree(chip->data_buffer);
+ spin_unlock(&driver_lock);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(tcm_release);
+
+ssize_t tcm_write(struct file *file, const char __user *buf,
+ size_t size, loff_t *off)
+{
+ struct tcm_chip *chip = file->private_data;
+ int in_size = size, out_size;
+
+ /*
+ * cannot perform a write until the read has cleared
+ * either via tcm_read or a user_read_timer timeout
+ */
+ while (atomic_read(&chip->data_pending) != 0)
+ msleep(TCM_TIMEOUT);
+
+ mutex_lock(&chip->buffer_mutex);
+
+ if (in_size > TCM_BUFSIZE)
+ in_size = TCM_BUFSIZE;
+
+ if (copy_from_user(chip->data_buffer, (void __user *)buf, in_size)) {
+ mutex_unlock(&chip->buffer_mutex);
+ return -EFAULT;
+ }
+
+ /* atomic tcm command send and result receive */
+ out_size = tcm_transmit(chip, chip->data_buffer, TCM_BUFSIZE);
+
+ if (out_size >= 0) {
+ atomic_set(&chip->data_pending, out_size);
+ mutex_unlock(&chip->buffer_mutex);
+
+ /* Set a timeout by which the reader must come claim the result */
+ mod_timer(&chip->user_read_timer, jiffies + (60 * HZ));
+ } else
+ mutex_unlock(&chip->buffer_mutex);
+
+ return in_size;
+}
+EXPORT_SYMBOL_GPL(tcm_write);
+
+ssize_t tcm_read(struct file *file, char __user *buf,
+ size_t size, loff_t *off)
+{
+ struct tcm_chip *chip = file->private_data;
+ int ret_size = 0;
+
+ del_singleshot_timer_sync(&chip->user_read_timer);
+ flush_work(&chip->work);
+ ret_size = atomic_read(&chip->data_pending);
+ atomic_set(&chip->data_pending, 0);
+ if (ret_size > 0) { /* relay data */
+ if (size < ret_size)
+ ret_size = size;
+
+ mutex_lock(&chip->buffer_mutex);
+ if (copy_to_user(buf, chip->data_buffer, ret_size))
+ ret_size = -EFAULT;
+ mutex_unlock(&chip->buffer_mutex);
+ }
+
+ return ret_size;
+}
+EXPORT_SYMBOL_GPL(tcm_read);
+
+void tcm_remove_hardware(struct device *dev)
+{
+ struct tcm_chip *chip = dev_get_drvdata(dev);
+
+ if (chip == NULL) {
+ dev_err(dev, "No device data found\n");
+ return;
+ }
+
+ spin_lock(&driver_lock);
+ list_del(&chip->list);
+ spin_unlock(&driver_lock);
+
+ dev_set_drvdata(dev, NULL);
+ misc_deregister(&chip->vendor.miscdev);
+ kfree(chip->vendor.miscdev.name);
+
+ sysfs_remove_group(&dev->kobj, chip->vendor.attr_group);
+ /* tcm_bios_log_teardown(chip->bios_dir); */
+
+ clear_bit(chip->dev_num, dev_mask);
+ kfree(chip);
+ put_device(dev);
+}
+EXPORT_SYMBOL_GPL(tcm_remove_hardware);
+
+static u8 savestate[] = {
+ 0, 193, /* TCM_TAG_RQU_COMMAND */
+ 0, 0, 0, 10, /* blob length (in bytes) */
+ 0, 0, 128, 152 /* TCM_ORD_SaveState */
+};
+
+/*
+ * We are about to suspend. Save the TCM state
+ * so that it can be restored.
+ */
+int tcm_pm_suspend(struct device *dev, pm_message_t pm_state)
+{
+ struct tcm_chip *chip = dev_get_drvdata(dev);
+
+ if (chip == NULL)
+ return -ENODEV;
+
+ tcm_transmit(chip, savestate, sizeof(savestate));
+ return 0;
+}
+EXPORT_SYMBOL_GPL(tcm_pm_suspend);
+
+int tcm_pm_suspend_p(struct device *dev)
+{
+ struct tcm_chip *chip = dev_get_drvdata(dev);
+
+ if (chip == NULL)
+ return -ENODEV;
+
+ tcm_transmit(chip, savestate, sizeof(savestate));
+ return 0;
+}
+EXPORT_SYMBOL_GPL(tcm_pm_suspend_p);
+
+void tcm_startup(struct tcm_chip *chip)
+{
+ u8 start_up[] = {
+ 0, 193, /* TCM_TAG_RQU_COMMAND */
+ 0, 0, 0, 12, /* blob length (in bytes) */
+ 0, 0, 128, 153, /* TCM_ORD_SaveState */
+ 0, 1
+ };
+ if (chip == NULL)
+ return;
+ tcm_transmit(chip, start_up, sizeof(start_up));
+}
+EXPORT_SYMBOL_GPL(tcm_startup);
+
+/*
+ * Resume from a power safe. The BIOS already restored
+ * the TCM state.
+ */
+int tcm_pm_resume(struct device *dev)
+{
+ u8 start_up[] = {
+ 0, 193, /* TCM_TAG_RQU_COMMAND */
+ 0, 0, 0, 12, /* blob length (in bytes) */
+ 0, 0, 128, 153, /* TCM_ORD_SaveState */
+ 0, 1
+ };
+ struct tcm_chip *chip = dev_get_drvdata(dev);
+ /* dev_info(chip->dev ,"--call tcm_pm_resume\n"); */
+ if (chip == NULL)
+ return -ENODEV;
+
+ tcm_transmit(chip, start_up, sizeof(start_up));
+ return 0;
+}
+EXPORT_SYMBOL_GPL(tcm_pm_resume);
+
+/*
+ * Called from tcm_<specific>.c probe function only for devices
+ * the driver has determined it should claim. Prior to calling
+ * this function the specific probe function has called pci_enable_device
+ * upon errant exit from this function specific probe function should call
+ * pci_disable_device
+ */
+struct tcm_chip *tcm_register_hardware(struct device *dev,
+ const struct tcm_vendor_specific *entry)
+{
+ int rc;
+#define DEVNAME_SIZE 7
+
+ char *devname = NULL;
+ struct tcm_chip *chip = NULL;
+
+ /* Driver specific per-device data */
+ chip = kzalloc(sizeof(*chip), GFP_KERNEL);
+ if (chip == NULL) {
+ dev_err(dev, "chip kzalloc err\n");
+ return NULL;
+ }
+
+ mutex_init(&chip->buffer_mutex);
+ mutex_init(&chip->tcm_mutex);
+ INIT_LIST_HEAD(&chip->list);
+
+ INIT_WORK(&chip->work, timeout_work);
+ timer_setup(&chip->user_read_timer, user_reader_timeout, 0);
+
+ memcpy(&chip->vendor, entry, sizeof(struct tcm_vendor_specific));
+
+ chip->dev_num = find_first_zero_bit(dev_mask, TCM_NUM_DEVICES);
+
+ if (chip->dev_num >= TCM_NUM_DEVICES) {
+ dev_err(dev, "No available tcm device numbers\n");
+ kfree(chip);
+ return NULL;
+ } else if (chip->dev_num == 0)
+ chip->vendor.miscdev.minor = TCM_MINOR;
+ else
+ chip->vendor.miscdev.minor = MISC_DYNAMIC_MINOR;
+
+ set_bit(chip->dev_num, dev_mask);
+
+ devname = kmalloc(DEVNAME_SIZE, GFP_KERNEL);
+ scnprintf(devname, DEVNAME_SIZE, "%s%d", "tcm", chip->dev_num);
+ chip->vendor.miscdev.name = devname;
+
+ /* chip->vendor.miscdev.dev = dev; */
+
+ chip->dev = get_device(dev);
+
+ if (misc_register(&chip->vendor.miscdev)) {
+ dev_err(chip->dev,
+ "unable to misc_register %s, minor %d\n",
+ chip->vendor.miscdev.name,
+ chip->vendor.miscdev.minor);
+ put_device(dev);
+ clear_bit(chip->dev_num, dev_mask);
+ kfree(chip);
+ kfree(devname);
+ return NULL;
+ }
+
+ spin_lock(&driver_lock);
+ dev_set_drvdata(dev, chip);
+ list_add(&chip->list, &tcm_chip_list);
+ spin_unlock(&driver_lock);
+
+ rc = sysfs_create_group(&dev->kobj, chip->vendor.attr_group);
+ /* chip->bios_dir = tcm_bios_log_setup(devname); */
+
+ return chip;
+}
+EXPORT_SYMBOL_GPL(tcm_register_hardware);
+
+static int __init tcm_init_module(void)
+{
+ return 0;
+}
+
+static void __exit tcm_exit_module(void)
+{
+}
+
+module_init(tcm_init_module);
+module_exit(tcm_exit_module);
+
+MODULE_AUTHOR("Nationz Technologies Inc.");
+MODULE_DESCRIPTION("TCM Driver");
+MODULE_VERSION("1.1.1.0");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/gmjstcm/tcm.h b/drivers/staging/gmjstcm/tcm.h
new file mode 100644
index 000000000000..40cd0a879c3a
--- /dev/null
+++ b/drivers/staging/gmjstcm/tcm.h
@@ -0,0 +1,122 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2009 Nationz Technologies Inc.
+ *
+ */
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/fs.h>
+#include <linux/miscdevice.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+struct device;
+struct tcm_chip;
+
+enum tcm_timeout {
+ TCM_TIMEOUT = 5,
+};
+
+/* TCM addresses */
+enum tcm_addr {
+ TCM_SUPERIO_ADDR = 0x2E,
+ TCM_ADDR = 0x4E,
+};
+
+extern ssize_t tcm_show_pubek(struct device *, struct device_attribute *attr,
+ char *);
+extern ssize_t tcm_show_pcrs(struct device *, struct device_attribute *attr,
+ char *);
+extern ssize_t tcm_show_caps(struct device *, struct device_attribute *attr,
+ char *);
+extern ssize_t tcm_store_cancel(struct device *, struct device_attribute *attr,
+ const char *, size_t);
+extern ssize_t tcm_show_enabled(struct device *, struct device_attribute *attr,
+ char *);
+extern ssize_t tcm_show_active(struct device *, struct device_attribute *attr,
+ char *);
+extern ssize_t tcm_show_owned(struct device *, struct device_attribute *attr,
+ char *);
+extern ssize_t tcm_show_temp_deactivated(struct device *,
+ struct device_attribute *attr, char *);
+
+struct tcm_vendor_specific {
+ const u8 req_complete_mask;
+ const u8 req_complete_val;
+ const u8 req_canceled;
+ void __iomem *iobase; /* ioremapped address */
+ void __iomem *iolbc;
+ unsigned long base; /* TCM base address */
+
+ int irq;
+
+ int region_size;
+ int have_region;
+
+ int (*recv)(struct tcm_chip *, u8 *, size_t);
+ int (*send)(struct tcm_chip *, u8 *, size_t);
+ void (*cancel)(struct tcm_chip *);
+ u8 (*status)(struct tcm_chip *);
+ struct miscdevice miscdev;
+ struct attribute_group *attr_group;
+ struct list_head list;
+ int locality;
+ unsigned long timeout_a, timeout_b, timeout_c, timeout_d; /* jiffies */
+ unsigned long duration[3]; /* jiffies */
+
+ wait_queue_head_t read_queue;
+ wait_queue_head_t int_queue;
+};
+
+struct tcm_chip {
+ struct device *dev; /* Device stuff */
+
+ int dev_num; /* /dev/tcm# */
+ int num_opens; /* only one allowed */
+ int time_expired;
+
+ /* Data passed to and from the tcm via the read/write calls */
+ u8 *data_buffer;
+ atomic_t data_pending;
+ struct mutex buffer_mutex;
+
+ struct timer_list user_read_timer; /* user needs to claim result */
+ struct work_struct work;
+ struct mutex tcm_mutex; /* tcm is processing */
+
+ struct tcm_vendor_specific vendor;
+
+ struct dentry **bios_dir;
+
+ struct list_head list;
+};
+
+#define to_tcm_chip(n) container_of(n, struct tcm_chip, vendor)
+
+static inline int tcm_read_index(int base, int index)
+{
+ outb(index, base);
+ return inb(base+1) & 0xFF;
+}
+
+static inline void tcm_write_index(int base, int index, int value)
+{
+ outb(index, base);
+ outb(value & 0xFF, base+1);
+}
+extern void tcm_startup(struct tcm_chip *);
+extern void tcm_get_timeouts(struct tcm_chip *);
+extern unsigned long tcm_calc_ordinal_duration(struct tcm_chip *, u32);
+extern struct tcm_chip *tcm_register_hardware(struct device *,
+ const struct tcm_vendor_specific *);
+extern int tcm_open(struct inode *, struct file *);
+extern int tcm_release(struct inode *, struct file *);
+extern ssize_t tcm_write(struct file *, const char __user *, size_t,
+ loff_t *);
+extern ssize_t tcm_read(struct file *, char __user *, size_t, loff_t *);
+extern void tcm_remove_hardware(struct device *);
+extern int tcm_pm_suspend(struct device *, pm_message_t);
+extern int tcm_pm_suspend_p(struct device *);
+extern int tcm_pm_resume(struct device *);
diff --git a/drivers/staging/gmjstcm/tcm_tis_spi.c b/drivers/staging/gmjstcm/tcm_tis_spi.c
new file mode 100644
index 000000000000..e29c0c1d54c6
--- /dev/null
+++ b/drivers/staging/gmjstcm/tcm_tis_spi.c
@@ -0,0 +1,847 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020 Kylin Tech. Co., Ltd.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/interrupt.h>
+#include <linux/wait.h>
+#include <linux/acpi.h>
+#include <linux/spi/spi.h>
+
+#include "tcm.h"
+
+static int is_ft_all(void) {
+ return 0;
+}
+
+#define TCM_HEADER_SIZE 10
+
+static bool tcm_debug;
+module_param_named(debug, tcm_debug, bool, 0600);
+MODULE_PARM_DESC(debug, "Turn TCM debugging mode on and off");
+
+#define tcm_dbg(fmt, args...) \
+{ \
+ if (tcm_debug) \
+ pr_err(fmt, ## args); \
+}
+
+enum tis_access {
+ TCM_ACCESS_VALID = 0x80,
+ TCM_ACCESS_ACTIVE_LOCALITY = 0x20,
+ TCM_ACCESS_REQUEST_PENDING = 0x04,
+ TCM_ACCESS_REQUEST_USE = 0x02,
+};
+
+enum tis_status {
+ TCM_STS_VALID = 0x80,
+ TCM_STS_COMMAND_READY = 0x40,
+ TCM_STS_GO = 0x20,
+ TCM_STS_DATA_AVAIL = 0x10,
+ TCM_STS_DATA_EXPECT = 0x08,
+};
+
+enum tis_int_flags {
+ TCM_GLOBAL_INT_ENABLE = 0x80000000,
+ TCM_INTF_BURST_COUNT_STATIC = 0x100,
+ TCM_INTF_CMD_READY_INT = 0x080,
+ TCM_INTF_INT_EDGE_FALLING = 0x040,
+ TCM_INTF_INT_EDGE_RISING = 0x020,
+ TCM_INTF_INT_LEVEL_LOW = 0x010,
+ TCM_INTF_INT_LEVEL_HIGH = 0x008,
+ TCM_INTF_LOCALITY_CHANGE_INT = 0x004,
+ TCM_INTF_STS_VALID_INT = 0x002,
+ TCM_INTF_DATA_AVAIL_INT = 0x001,
+};
+
+enum tis_defaults {
+ TIS_SHORT_TIMEOUT = 750, /* ms */
+ TIS_LONG_TIMEOUT = 2000, /* 2 sec */
+};
+
+#define TCM_ACCESS(l) (0x0000 | ((l) << 12))
+#define TCM_INT_ENABLE(l) (0x0008 | ((l) << 12)) /* interperet */
+#define TCM_INT_VECTOR(l) (0x000C | ((l) << 12))
+#define TCM_INT_STATUS(l) (0x0010 | ((l) << 12))
+#define TCM_INTF_CAPS(l) (0x0014 | ((l) << 12))
+#define TCM_STS(l) (0x0018 | ((l) << 12))
+#define TCM_DATA_FIFO(l) (0x0024 | ((l) << 12))
+
+#define TCM_DID_VID(l) (0x0F00 | ((l) << 12))
+#define TCM_RID(l) (0x0F04 | ((l) << 12))
+
+#define TIS_MEM_BASE_huawei 0x3fed40000LL
+
+#define MAX_SPI_FRAMESIZE 64
+
+//
+#define _CPU_FT2000A4
+#define REUSE_CONF_REG_BASE 0x28180208
+#define REUSE_GPIO1_A5_BASE 0x28005000
+
+static void *__iomem reuse_conf_reg;
+static void *__iomem gpio1_a5;
+
+//
+static LIST_HEAD(tis_chips);
+static DEFINE_SPINLOCK(tis_lock);
+
+struct chip_data {
+ u8 cs;
+ u8 tmode;
+ u8 type;
+ u8 poll_mode;
+ u16 clk_div;
+ u32 speed_hz;
+ void (*cs_control)(u32 command);
+};
+
+struct tcm_tis_spi_phy {
+ struct spi_device *spi_device;
+ struct completion ready;
+ u8 *iobuf;
+};
+
+int tcm_tis_spi_transfer(struct device *dev, u32 addr, u16 len,
+ u8 *in, const u8 *out)
+{
+ struct tcm_tis_spi_phy *phy = dev_get_drvdata(dev);
+ int ret = 0;
+ struct spi_message m;
+ struct spi_transfer spi_xfer;
+ u8 transfer_len;
+
+ tcm_dbg("TCM-dbg: %s, addr: 0x%x, len: %x, %s\n",
+ __func__, addr, len, (in) ? "in" : "out");
+
+ spi_bus_lock(phy->spi_device->master);
+
+ /* set gpio1_a5 to LOW */
+ if (is_ft_all() && (phy->spi_device->chip_select == 0)) {
+ iowrite32(0x0, gpio1_a5);
+ }
+
+ while (len) {
+ transfer_len = min_t(u16, len, MAX_SPI_FRAMESIZE);
+
+ phy->iobuf[0] = (in ? 0x80 : 0) | (transfer_len - 1);
+ phy->iobuf[1] = 0xd4;
+ phy->iobuf[2] = addr >> 8;
+ phy->iobuf[3] = addr;
+
+ memset(&spi_xfer, 0, sizeof(spi_xfer));
+ spi_xfer.tx_buf = phy->iobuf;
+ spi_xfer.rx_buf = phy->iobuf;
+ spi_xfer.len = 4;
+ spi_xfer.cs_change = 1;
+
+ spi_message_init(&m);
+ spi_message_add_tail(&spi_xfer, &m);
+ ret = spi_sync_locked(phy->spi_device, &m);
+ if (ret < 0)
+ goto exit;
+
+ spi_xfer.cs_change = 0;
+ spi_xfer.len = transfer_len;
+ spi_xfer.delay_usecs = 5;
+
+ if (in) {
+ spi_xfer.tx_buf = NULL;
+ } else if (out) {
+ spi_xfer.rx_buf = NULL;
+ memcpy(phy->iobuf, out, transfer_len);
+ out += transfer_len;
+ }
+
+ spi_message_init(&m);
+ spi_message_add_tail(&spi_xfer, &m);
+ reinit_completion(&phy->ready);
+ ret = spi_sync_locked(phy->spi_device, &m);
+ if (ret < 0)
+ goto exit;
+
+ if (in) {
+ memcpy(in, phy->iobuf, transfer_len);
+ in += transfer_len;
+ }
+
+ len -= transfer_len;
+ }
+
+exit:
+ /* set gpio1_a5 to HIGH */
+ if (is_ft_all() && (phy->spi_device->chip_select == 0)) {
+ iowrite32(0x20, gpio1_a5);
+ }
+
+ spi_bus_unlock(phy->spi_device->master);
+ tcm_dbg("TCM-dbg: ret: %d\n", ret);
+ return ret;
+}
+
+static int tcm_tis_read8(struct device *dev,
+ u32 addr, u16 len, u8 *result)
+{
+ return tcm_tis_spi_transfer(dev, addr, len, result, NULL);
+}
+
+static int tcm_tis_write8(struct device *dev,
+ u32 addr, u16 len, u8 *value)
+{
+ return tcm_tis_spi_transfer(dev, addr, len, NULL, value);
+}
+
+static int tcm_tis_readb(struct device *dev, u32 addr, u8 *value)
+{
+ return tcm_tis_read8(dev, addr, sizeof(u8), value);
+}
+
+static int tcm_tis_writeb(struct device *dev, u32 addr, u8 value)
+{
+ return tcm_tis_write8(dev, addr, sizeof(u8), &value);
+}
+
+static int tcm_tis_readl(struct device *dev, u32 addr, u32 *result)
+{
+ int rc;
+ __le32 result_le;
+
+ rc = tcm_tis_read8(dev, addr, sizeof(u32), (u8 *)&result_le);
+ tcm_dbg("TCM-dbg: result_le: 0x%x\n", result_le);
+ if (!rc)
+ *result = le32_to_cpu(result_le);
+
+ return rc;
+}
+
+static int tcm_tis_writel(struct device *dev, u32 addr, u32 value)
+{
+ int rc;
+ __le32 value_le;
+
+ value_le = cpu_to_le32(value);
+ rc = tcm_tis_write8(dev, addr, sizeof(u32), (u8 *)&value_le);
+
+ return rc;
+}
+
+static int request_locality(struct tcm_chip *chip, int l);
+static void release_locality(struct tcm_chip *chip, int l, int force);
+static void cleanup_tis(void)
+{
+ int ret;
+ u32 inten;
+ struct tcm_vendor_specific *i, *j;
+ struct tcm_chip *chip;
+
+ spin_lock(&tis_lock);
+ list_for_each_entry_safe(i, j, &tis_chips, list) {
+ chip = to_tcm_chip(i);
+ ret = tcm_tis_readl(chip->dev,
+ TCM_INT_ENABLE(chip->vendor.locality), &inten);
+ if (ret < 0)
+ return;
+
+ tcm_tis_writel(chip->dev, TCM_INT_ENABLE(chip->vendor.locality),
+ ~TCM_GLOBAL_INT_ENABLE & inten);
+ release_locality(chip, chip->vendor.locality, 1);
+ }
+ spin_unlock(&tis_lock);
+}
+
+static void tcm_tis_init(struct tcm_chip *chip)
+{
+ int ret;
+ u8 rid;
+ u32 vendor, intfcaps;
+
+ ret = tcm_tis_readl(chip->dev, TCM_DID_VID(0), &vendor);
+
+ if ((vendor & 0xffff) != 0x19f5 && (vendor & 0xffff) != 0x1B4E)
+ pr_info("there is no Nationz TCM on you computer\n");
+
+ ret = tcm_tis_readb(chip->dev, TCM_RID(0), &rid);
+ if (ret < 0)
+ return;
+ pr_info("kylin: 2019-09-21 1.2 TCM (device-id 0x%X, rev-id %d)\n",
+ vendor >> 16, rid);
+
+ /* Figure out the capabilities */
+ ret = tcm_tis_readl(chip->dev,
+ TCM_INTF_CAPS(chip->vendor.locality), &intfcaps);
+ if (ret < 0)
+ return;
+
+ if (request_locality(chip, 0) != 0)
+ pr_err("tcm request_locality err\n");
+
+ atomic_set(&chip->data_pending, 0);
+}
+
+static void tcm_handle_err(struct tcm_chip *chip)
+{
+ cleanup_tis();
+ tcm_tis_init(chip);
+}
+
+static bool check_locality(struct tcm_chip *chip, int l)
+{
+ int ret;
+ u8 access;
+
+ ret = tcm_tis_readb(chip->dev, TCM_ACCESS(l), &access);
+ tcm_dbg("TCM-dbg: access: 0x%x\n", access);
+ if (ret < 0)
+ return false;
+
+ if ((access & (TCM_ACCESS_ACTIVE_LOCALITY | TCM_ACCESS_VALID)) ==
+ (TCM_ACCESS_ACTIVE_LOCALITY | TCM_ACCESS_VALID)) {
+ chip->vendor.locality = l;
+ return true;
+ }
+
+ return false;
+}
+
+static int request_locality(struct tcm_chip *chip, int l)
+{
+ unsigned long stop;
+
+ if (check_locality(chip, l))
+ return l;
+
+ tcm_tis_writeb(chip->dev, TCM_ACCESS(l), TCM_ACCESS_REQUEST_USE);
+
+ /* wait for burstcount */
+ stop = jiffies + chip->vendor.timeout_a;
+ do {
+ if (check_locality(chip, l))
+ return l;
+ msleep(TCM_TIMEOUT);
+ } while (time_before(jiffies, stop));
+
+ return -1;
+}
+
+static void release_locality(struct tcm_chip *chip, int l, int force)
+{
+ int ret;
+ u8 access;
+
+ ret = tcm_tis_readb(chip->dev, TCM_ACCESS(l), &access);
+ if (ret < 0)
+ return;
+ if (force || (access & (TCM_ACCESS_REQUEST_PENDING | TCM_ACCESS_VALID)) ==
+ (TCM_ACCESS_REQUEST_PENDING | TCM_ACCESS_VALID))
+ tcm_tis_writeb(chip->dev,
+ TCM_ACCESS(l), TCM_ACCESS_ACTIVE_LOCALITY);
+}
+
+static u8 tcm_tis_status(struct tcm_chip *chip)
+{
+ int ret;
+ u8 status;
+
+ ret = tcm_tis_readb(chip->dev,
+ TCM_STS(chip->vendor.locality), &status);
+ tcm_dbg("TCM-dbg: status: 0x%x\n", status);
+ if (ret < 0)
+ return 0;
+
+ return status;
+}
+
+static void tcm_tis_ready(struct tcm_chip *chip)
+{
+ /* this causes the current command to be aboreted */
+ tcm_tis_writeb(chip->dev, TCM_STS(chip->vendor.locality),
+ TCM_STS_COMMAND_READY);
+}
+
+static int get_burstcount(struct tcm_chip *chip)
+{
+ int ret;
+ unsigned long stop;
+ u8 tmp, tmp1;
+ int burstcnt = 0;
+
+ /* wait for burstcount */
+ /* which timeout value, spec has 2 answers (c & d) */
+ stop = jiffies + chip->vendor.timeout_d;
+ do {
+ ret = tcm_tis_readb(chip->dev,
+ TCM_STS(chip->vendor.locality) + 1,
+ &tmp);
+ tcm_dbg("TCM-dbg: burstcnt: 0x%x\n", burstcnt);
+ if (ret < 0)
+ return -EINVAL;
+ ret = tcm_tis_readb(chip->dev,
+ (TCM_STS(chip->vendor.locality) + 2),
+ &tmp1);
+ tcm_dbg("TCM-dbg: burstcnt: 0x%x\n", burstcnt);
+ if (ret < 0)
+ return -EINVAL;
+
+ burstcnt = tmp | (tmp1 << 8);
+ if (burstcnt)
+ return burstcnt;
+ msleep(TCM_TIMEOUT);
+ } while (time_before(jiffies, stop));
+
+ return -EBUSY;
+}
+
+static int wait_for_stat(struct tcm_chip *chip, u8 mask,
+ unsigned long timeout,
+ wait_queue_head_t *queue)
+{
+ unsigned long stop;
+ u8 status;
+
+ /* check current status */
+ status = tcm_tis_status(chip);
+ if ((status & mask) == mask)
+ return 0;
+
+ stop = jiffies + timeout;
+ do {
+ msleep(TCM_TIMEOUT);
+ status = tcm_tis_status(chip);
+ if ((status & mask) == mask)
+ return 0;
+ } while (time_before(jiffies, stop));
+
+ return -ETIME;
+}
+
+static int recv_data(struct tcm_chip *chip, u8 *buf, size_t count)
+{
+ int ret;
+ int size = 0, burstcnt;
+
+ while (size < count && wait_for_stat(chip,
+ TCM_STS_DATA_AVAIL | TCM_STS_VALID,
+ chip->vendor.timeout_c,
+ &chip->vendor.read_queue) == 0) {
+ burstcnt = get_burstcount(chip);
+
+ if (burstcnt < 0) {
+ dev_err(chip->dev, "Unable to read burstcount\n");
+ return burstcnt;
+ }
+
+ for (; burstcnt > 0 && size < count; burstcnt--) {
+ ret = tcm_tis_readb(chip->dev,
+ TCM_DATA_FIFO(chip->vendor.locality),
+ &buf[size]);
+ tcm_dbg("TCM-dbg: buf[%d]: 0x%x\n", size, buf[size]);
+ size++;
+ }
+ }
+
+ return size;
+}
+
+static int tcm_tis_recv(struct tcm_chip *chip, u8 *buf, size_t count)
+{
+ int size = 0;
+ int expected, status;
+ unsigned long stop;
+
+ if (count < TCM_HEADER_SIZE) {
+ dev_err(chip->dev, "read size is to small: %d\n", (u32)(count));
+ size = -EIO;
+ goto out;
+ }
+
+ /* read first 10 bytes, including tag, paramsize, and result */
+ size = recv_data(chip, buf, TCM_HEADER_SIZE);
+ if (size < TCM_HEADER_SIZE) {
+ dev_err(chip->dev, "Unable to read header\n");
+ goto out;
+ }
+
+ expected = be32_to_cpu(*(__be32 *)(buf + 2));
+ if (expected > count) {
+ dev_err(chip->dev, "Expected data count\n");
+ size = -EIO;
+ goto out;
+ }
+
+ size += recv_data(chip, &buf[TCM_HEADER_SIZE],
+ expected - TCM_HEADER_SIZE);
+ if (size < expected) {
+ dev_err(chip->dev, "Unable to read remainder of result\n");
+ size = -ETIME;
+ goto out;
+ }
+
+ wait_for_stat(chip, TCM_STS_VALID, chip->vendor.timeout_c,
+ &chip->vendor.int_queue);
+
+ stop = jiffies + chip->vendor.timeout_c;
+ do {
+ msleep(TCM_TIMEOUT);
+ status = tcm_tis_status(chip);
+ if ((status & TCM_STS_DATA_AVAIL) == 0)
+ break;
+
+ } while (time_before(jiffies, stop));
+
+ status = tcm_tis_status(chip);
+ if (status & TCM_STS_DATA_AVAIL) { /* retry? */
+ dev_err(chip->dev, "Error left over data\n");
+ size = -EIO;
+ goto out;
+ }
+
+out:
+ tcm_tis_ready(chip);
+ release_locality(chip, chip->vendor.locality, 0);
+ if (size < 0)
+ tcm_handle_err(chip);
+ return size;
+}
+
+/*
+ * If interrupts are used (signaled by an irq set in the vendor structure)
+ * tcm.c can skip polling for the data to be available as the interrupt is
+ * waited for here
+ */
+static int tcm_tis_send(struct tcm_chip *chip, u8 *buf, size_t len)
+{
+ int rc, status, burstcnt;
+ size_t count = 0;
+ u32 ordinal;
+ unsigned long stop;
+ int send_again = 0;
+
+tcm_tis_send_again:
+ count = 0;
+ if (request_locality(chip, 0) < 0) {
+ dev_err(chip->dev, "send, tcm is busy\n");
+ return -EBUSY;
+ }
+ status = tcm_tis_status(chip);
+
+ if ((status & TCM_STS_COMMAND_READY) == 0) {
+ tcm_tis_ready(chip);
+ if (wait_for_stat(chip, TCM_STS_COMMAND_READY,
+ chip->vendor.timeout_b, &chip->vendor.int_queue) < 0) {
+ dev_err(chip->dev, "send, tcm wait time out1\n");
+ rc = -ETIME;
+ goto out_err;
+ }
+ }
+
+ while (count < len - 1) {
+ burstcnt = get_burstcount(chip);
+ if (burstcnt < 0) {
+ dev_err(chip->dev, "Unable to read burstcount\n");
+ rc = burstcnt;
+ goto out_err;
+ }
+ for (; burstcnt > 0 && count < len - 1; burstcnt--) {
+ tcm_tis_writeb(chip->dev,
+ TCM_DATA_FIFO(chip->vendor.locality), buf[count]);
+ count++;
+ }
+
+ wait_for_stat(chip, TCM_STS_VALID, chip->vendor.timeout_c,
+ &chip->vendor.int_queue);
+ }
+
+ /* write last byte */
+ tcm_tis_writeb(chip->dev,
+ TCM_DATA_FIFO(chip->vendor.locality), buf[count]);
+
+ wait_for_stat(chip, TCM_STS_VALID,
+ chip->vendor.timeout_c, &chip->vendor.int_queue);
+ stop = jiffies + chip->vendor.timeout_c;
+ do {
+ msleep(TCM_TIMEOUT);
+ status = tcm_tis_status(chip);
+ if ((status & TCM_STS_DATA_EXPECT) == 0)
+ break;
+
+ } while (time_before(jiffies, stop));
+
+ if ((status & TCM_STS_DATA_EXPECT) != 0) {
+ dev_err(chip->dev, "send, tcm expect data\n");
+ rc = -EIO;
+ goto out_err;
+ }
+
+ /* go and do it */
+ tcm_tis_writeb(chip->dev, TCM_STS(chip->vendor.locality), TCM_STS_GO);
+
+ ordinal = be32_to_cpu(*((__be32 *)(buf + 6)));
+ if (wait_for_stat(chip, TCM_STS_DATA_AVAIL | TCM_STS_VALID,
+ tcm_calc_ordinal_duration(chip, ordinal),
+ &chip->vendor.read_queue) < 0) {
+ dev_err(chip->dev, "send, tcm wait time out2\n");
+ rc = -ETIME;
+ goto out_err;
+ }
+
+ return len;
+
+out_err:
+ tcm_tis_ready(chip);
+ release_locality(chip, chip->vendor.locality, 0);
+ tcm_handle_err(chip);
+ if (send_again++ < 3) {
+ goto tcm_tis_send_again;
+ }
+
+ dev_err(chip->dev, "kylin send, err: %d\n", rc);
+ return rc;
+}
+
+static struct file_operations tis_ops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .open = tcm_open,
+ .read = tcm_read,
+ .write = tcm_write,
+ .release = tcm_release,
+};
+
+static DEVICE_ATTR(pubek, S_IRUGO, tcm_show_pubek, NULL);
+static DEVICE_ATTR(pcrs, S_IRUGO, tcm_show_pcrs, NULL);
+static DEVICE_ATTR(enabled, S_IRUGO, tcm_show_enabled, NULL);
+static DEVICE_ATTR(active, S_IRUGO, tcm_show_active, NULL);
+static DEVICE_ATTR(owned, S_IRUGO, tcm_show_owned, NULL);
+static DEVICE_ATTR(temp_deactivated, S_IRUGO, tcm_show_temp_deactivated,
+ NULL);
+static DEVICE_ATTR(caps, S_IRUGO, tcm_show_caps, NULL);
+static DEVICE_ATTR(cancel, S_IWUSR | S_IWGRP, NULL, tcm_store_cancel);
+
+static struct attribute *tis_attrs[] = {
+ &dev_attr_pubek.attr,
+ &dev_attr_pcrs.attr,
+ &dev_attr_enabled.attr,
+ &dev_attr_active.attr,
+ &dev_attr_owned.attr,
+ &dev_attr_temp_deactivated.attr,
+ &dev_attr_caps.attr,
+ &dev_attr_cancel.attr, NULL,
+};
+
+static struct attribute_group tis_attr_grp = {
+ .attrs = tis_attrs
+};
+
+static struct tcm_vendor_specific tcm_tis = {
+ .status = tcm_tis_status,
+ .recv = tcm_tis_recv,
+ .send = tcm_tis_send,
+ .cancel = tcm_tis_ready,
+ .req_complete_mask = TCM_STS_DATA_AVAIL | TCM_STS_VALID,
+ .req_complete_val = TCM_STS_DATA_AVAIL | TCM_STS_VALID,
+ .req_canceled = TCM_STS_COMMAND_READY,
+ .attr_group = &tis_attr_grp,
+ .miscdev = {
+ .fops = &tis_ops,
+ },
+};
+
+static struct tcm_chip *chip;
+static int tcm_tis_spi_probe(struct spi_device *spi)
+{
+ int ret;
+ u8 revid;
+ u32 vendor, intfcaps;
+ struct tcm_tis_spi_phy *phy;
+ struct chip_data *spi_chip;
+
+ pr_info("TCM(ky): __func__(v=%d) ..\n",
+ 10);
+
+ tcm_dbg("TCM-dbg: %s/%d, enter\n", __func__, __LINE__);
+ phy = devm_kzalloc(&spi->dev, sizeof(struct tcm_tis_spi_phy),
+ GFP_KERNEL);
+ if (!phy)
+ return -ENOMEM;
+
+ phy->iobuf = devm_kmalloc(&spi->dev, MAX_SPI_FRAMESIZE, GFP_KERNEL);
+ if (!phy->iobuf)
+ return -ENOMEM;
+
+ phy->spi_device = spi;
+ init_completion(&phy->ready);
+
+ tcm_dbg("TCM-dbg: %s/%d\n", __func__, __LINE__);
+ /* init spi dev */
+ spi->chip_select = 0; /* cs0 */
+ spi->mode = SPI_MODE_0;
+ spi->bits_per_word = 8;
+ spi->max_speed_hz = spi->max_speed_hz ? : 24000000;
+ spi_setup(spi);
+
+ spi_chip = spi_get_ctldata(spi);
+ if (!spi_chip) {
+ pr_err("There was wrong in spi master\n");
+ return -ENODEV;
+ }
+ /* tcm does not support interrupt mode, we use poll mode instead. */
+ spi_chip->poll_mode = 1;
+
+ tcm_dbg("TCM-dbg: %s/%d\n", __func__, __LINE__);
+ /* regiter tcm hw */
+ chip = tcm_register_hardware(&spi->dev, &tcm_tis);
+ if (!chip) {
+ dev_err(chip->dev, "tcm register hardware err\n");
+ return -ENODEV;
+ }
+
+ dev_set_drvdata(chip->dev, phy);
+
+ /**
+ * phytium2000a4 spi controller's clk clk level is unstable,
+ * so it is solved by using the low level of gpio output.
+ **/
+ if (is_ft_all() && (spi->chip_select == 0)) {
+ /* reuse conf reg base */
+ reuse_conf_reg = ioremap(REUSE_CONF_REG_BASE, 0x10);
+ if (!reuse_conf_reg) {
+ dev_err(&spi->dev, "Failed to ioremap reuse conf reg\n");
+ ret = -ENOMEM;
+ goto out_err;
+ }
+
+ /* gpio1 a5 base addr */
+ gpio1_a5 = ioremap(REUSE_GPIO1_A5_BASE, 0x10);
+ if (!gpio1_a5) {
+ dev_err(&spi->dev, "Failed to ioremap gpio1 a5\n");
+ ret = -ENOMEM;
+ goto out_err;
+ }
+
+ /* reuse cs0 to gpio1_a5 */
+ iowrite32((ioread32(reuse_conf_reg) | 0xFFFF0) & 0xFFF9004F,
+ reuse_conf_reg);
+ /* set gpio1 a5 to output */
+ iowrite32(0x20, gpio1_a5 + 0x4);
+ }
+
+ tcm_dbg("TCM-dbg: %s/%d\n",
+ __func__, __LINE__);
+ ret = tcm_tis_readl(chip->dev, TCM_DID_VID(0), &vendor);
+ if (ret < 0)
+ goto out_err;
+
+ tcm_dbg("TCM-dbg: %s/%d, vendor: 0x%x\n",
+ __func__, __LINE__, vendor);
+ if ((vendor & 0xffff) != 0x19f5 && (vendor & 0xffff) != 0x1B4E) {
+ dev_err(chip->dev, "there is no Nationz TCM on you computer\n");
+ goto out_err;
+ }
+
+ ret = tcm_tis_readb(chip->dev, TCM_RID(0), &revid);
+ tcm_dbg("TCM-dbg: %s/%d, revid: 0x%x\n",
+ __func__, __LINE__, revid);
+ if (ret < 0)
+ goto out_err;
+ dev_info(chip->dev, "kylin: 2019-09-21 1.2 TCM "
+ "(device-id 0x%X, rev-id %d)\n",
+ vendor >> 16, revid);
+
+ /* Default timeouts */
+ chip->vendor.timeout_a = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
+ chip->vendor.timeout_b = msecs_to_jiffies(TIS_LONG_TIMEOUT);
+ chip->vendor.timeout_c = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
+ chip->vendor.timeout_d = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
+
+ tcm_dbg("TCM-dbg: %s/%d\n",
+ __func__, __LINE__);
+ /* Figure out the capabilities */
+ ret = tcm_tis_readl(chip->dev,
+ TCM_INTF_CAPS(chip->vendor.locality), &intfcaps);
+ if (ret < 0)
+ goto out_err;
+
+ tcm_dbg("TCM-dbg: %s/%d, intfcaps: 0x%x\n",
+ __func__, __LINE__, intfcaps);
+ if (request_locality(chip, 0) != 0) {
+ dev_err(chip->dev, "tcm request_locality err\n");
+ ret = -ENODEV;
+ goto out_err;
+ }
+
+ INIT_LIST_HEAD(&chip->vendor.list);
+ spin_lock(&tis_lock);
+ list_add(&chip->vendor.list, &tis_chips);
+ spin_unlock(&tis_lock);
+
+ tcm_get_timeouts(chip);
+ tcm_startup(chip);
+
+ tcm_dbg("TCM-dbg: %s/%d, exit\n", __func__, __LINE__);
+ return 0;
+
+out_err:
+ if (is_ft_all()) {
+ if (reuse_conf_reg)
+ iounmap(reuse_conf_reg);
+ if (gpio1_a5)
+ iounmap(gpio1_a5);
+ }
+ tcm_dbg("TCM-dbg: %s/%d, error\n", __func__, __LINE__);
+ dev_set_drvdata(chip->dev, chip);
+ tcm_remove_hardware(chip->dev);
+
+ return ret;
+}
+
+static int tcm_tis_spi_remove(struct spi_device *dev)
+{
+ if (is_ft_all()) {
+ if (reuse_conf_reg)
+ iounmap(reuse_conf_reg);
+ if (gpio1_a5)
+ iounmap(gpio1_a5);
+ }
+
+ dev_info(&dev->dev, "%s\n", __func__);
+ dev_set_drvdata(chip->dev, chip);
+ tcm_remove_hardware(&dev->dev);
+
+ return 0;
+}
+
+static const struct acpi_device_id tcm_tis_spi_acpi_match[] = {
+ {"TCMS0001", 0},
+ {"SMO0768", 0},
+ {"ZIC0601", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(acpi, tcm_tis_spi_acpi_match);
+
+static const struct spi_device_id tcm_tis_spi_id_table[] = {
+ {"SMO0768", 0},
+ {"ZIC0601", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(spi, tcm_tis_spi_id_table);
+
+static struct spi_driver tcm_tis_spi_drv = {
+ .driver = {
+ .name = "tcm_tis_spi",
+ .acpi_match_table = ACPI_PTR(tcm_tis_spi_acpi_match),
+ },
+ .id_table = tcm_tis_spi_id_table,
+ .probe = tcm_tis_spi_probe,
+ .remove = tcm_tis_spi_remove,
+};
+
+module_spi_driver(tcm_tis_spi_drv);
+
+MODULE_AUTHOR("xiongxin<xiongxin(a)tj.kylinos.cn>");
+MODULE_DESCRIPTION("TCM Driver Base Spi");
+MODULE_VERSION("6.1.0.2");
+MODULE_LICENSE("GPL");
--
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