[PATCH 30 1/7] Add JTAG core driver
Corona, Ernesto
ernesto.corona at intel.com
Tue Jan 30 15:26:19 PST 2024
JTAG class driver provide infrastructure to support hardware/software JTAG platform drivers. It provide user layer API interface for flashing and debugging external devices which equipped with JTAG interface using standard transactions.
Driver exposes set of IOCTL to user space for:
- XFER:
SIR (Scan Instruction Register, IEEE 1149.1 Data Register scan);
SDR (Scan Data Register, IEEE 1149.1 Instruction Register scan);
- GIOCSTATUS read the current TAPC state of the JTAG controller
- SIOCSTATE Forces the JTAG TAPC to go into a particular state.
- SIOCFREQ/GIOCFREQ for setting and reading JTAG frequency.
- IOCBITBANG for low level control of JTAG signals.
Driver core provides set of internal APIs for allocation and
registration:
- jtag_register;
- jtag_unregister;
- jtag_alloc;
- jtag_free;
Platform driver on registration with jtag-core creates the next
entry in dev folder:
/dev/jtagX
Signed-off-by: Oleksandr Shamray <oleksandrs at mellanox.com>
Signed-off-by: Jiri Pirko <jiri at nvidia.com>
Signed-off-by: Ernesto Corona <ernesto.corona at intel.com>
Signed-off-by: Omar Castro <omar.eduardo.castro at linux.intel.com>
Acked-by: Philippe Ombredanne <pombredanne at nexb.com>
Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Cc: Arnd Bergmann <arnd at arndb.de>
Cc: Boris Brezillon <bbrezillon at kernel.org>
Cc: Randy Dunlap <rdunlap at infradead.org>
Cc: Johan Hovold <johan at kernel.org>
Cc: Jens Axboe <axboe at kernel.dk>
Cc: Joel Stanley <joel at jms.id.au>
Cc: Palmer Dabbelt <palmer at sifive.com>
Cc: Kees Cook <keescook at chromium.org>
Cc: William Breathitt Gray <vilhelm.gray at gmail.com>
Cc: Federico Vaga <federico.vaga at cern.ch>
Cc: Jonathan Cameron <Jonathan.Cameron at huawei.com>
Cc: Tony Luck <tony.luck at intel.com>
Cc: Christian Gromm <christian.gromm at microchip.com>
Cc: Linus Walleij <linus.walleij at linaro.org>
Cc: Yiwei Zhang <zzyiwei at google.com>
Cc: Alessandro Rubini <rubini at gnudd.com>
Cc: Viresh Kumar <viresh.kumar at linaro.org>
Cc: Mika Westerberg <mika.westerberg at linux.intel.com>
Cc: Steven Filary <steven.a.filary at intel.com>
Cc: Vadim Pasternak <vadimp at mellanox.com>
Cc: Amithash Prasad <amithash at fb.com>
Cc: Patrick Williams <patrickw3 at fb.com>
Cc: Luke Chen <luke_chen at aspeedtech.com>
Cc: Billy Tsai <billy_tsai at aspeedtech.com>
Cc: Rgrs <rgrs at protonmail.com>
---
v29->v30
Comments pointed by Steven Filary <steven.a.filary at intel.com>
- Add pre and post padding support for JTAG transfers.
- Add padding bit configuration definition.
- Use C99 flexible arrays.
- Add debug messages for JTAG core driver IOCTL operations.
- Add support for JTAG_SIOCTRST(Set TRST pin for JTAG).
- Update Ioctl number to 0xB9 due conflicts.
v28->v29
Comments pointed by Steven Filary <steven.a.filary at intel.com>
- Expand bitbang function to accept multiples bitbang operations within
a single JTAG_IOCBITBANG call. It will receive a buffer with TDI and
TMS values and it is expected that driver fills TDO fields with its
corresponding output value for every transaction.
- Always setup JTAG controller to master mode but disable JTAG output
when the driver is not in use to allow other HW to own the JTAG
bus. Remove SCU register accesses. This register controls the JTAG
controller mode (main/subordinate).
- Fix static analysis issues
- Add support for multichain. Set tap state and xfer operations now
include two tap state arguments: current state and end state.
v27->v28
Comments pointed by Steven Filary <steven.a.filary at intel.com>
- Replace JTAG_IOCRUNTEST with JTAG_SIOCSTATE adding support for all
TAPC end states in SW mode using a lookup table to navigate across
states.
- Add support for simultaneous READ/WRITE transfers
(JTAG_READ_WRITE_XFER).
- Support for switching JTAG controller mode between slave and master
mode.
- Setup JTAG controller mode to master only when the driver is opened,
letting
other HW to own the JTAG bus when it isn't in use.
- Include JTAG bit bang IOCTL for low level JTAG control usage
(JTAG_IOCBITBANG).
v24->v25
Comments pointed by Greg KH <gregkh at linuxfoundation.org>
- set values to enums in jtag.h
v23->v24
Notifications from kbuild test robot <lkp at intel.com>
- Add include types.h header to jtag.h
- remove unecessary jtag_release
v22->v23
Comments pointed by Greg KH <gregkh at linuxfoundation.org>
- remove restriction of allocated JTAG devs-
- add validation fo idle values
- remove unnecessary blank line
- change retcode for xfer
- remove unecessary jtag_release callback
- remove unecessary defined fron jtag.h
- align in one line define JTAG_IOCRUNTEST
v21->v22
Comments pointed by Andy Shevchenko <andy.shevchenko at gmail.com>
- Fix 0x0f -> 0x0F in ioctl-number.txt
- Add description to #define MAX_JTAG_NAME_LEN
- Remove unnecessary entry *dev from struct jtag
- Remove redundant parens
- Described mandatory callbacks and removed unnecessary
- Set JTAG_MAX_XFER_DATA_LEN to power of 2
- rework driver alloc/register to devm_ variant
- increasing line length up to 84 in order to improve readability.
Comments pointed by Randy Dunlap <rdunlap at infradead.org>
- fix spell in ABI doccumentation
v20->v21
Comments pointed by Randy Dunlap <rdunlap at infradead.org>
- Fix JTAG dirver help in Kconfig
v19->v20
Comments pointed by Randy Dunlap <rdunlap at infradead.org>
- Fix JTAG dirver help in Kconfig
Notifications from kbuild test robot <lkp at intel.com>
- fix incompatible type casts
v18->v19
Comments pointed by Julia Cartwright <juliac at eso.teric.us>
- Fix memory leak on jtag_alloc exit
v17->v18
Comments pointed by Julia Cartwright <juliac at eso.teric.us>
- Change to return -EOPNOTSUPP in case of error in JTAG_GIOCFREQ
- Add ops callbacks check to jtag_alloc
- Add err check for copy_to_user
- Move the kfree() above the if (err) in JTAG_IOCXFER
- remove unnecessary check for error after put_user
- add padding to struct jtag_xfer
v16->v17
Comments pointed by Julia Cartwright <juliac at eso.teric.us>
- Fix memory allocation on jtag alloc
- Move out unnecessary form lock on jtag open
- Rework jtag register behavior
v15->v16
Comments pointed by Florian Fainelli <f.fainelli at gmail.com>
- move check jtag->ops->* in ioctl before get_user()
- change error type -EINVAL --> -EBUSY on open already opened jtag
- remove unnecessary ARCH_DMA_MINALIGN flag from kzalloc
- remove define ARCH_DMA_MINALIGN
v14->v15
v13->v14
Comments pointed by Philippe Ombredanne <pombredanne at nexb.com>
- Change style of head block comment from /**/ to //
v12->v13
Comments pointed by Philippe Ombredanne <pombredanne at nexb.com>
- Change jtag.c licence type to
SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
and reorder line with license in description
v11->v12
Comments pointed by Greg KH <gregkh at linuxfoundation.org>
- Change jtag.h licence type to
SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
and reorder line with license in description
Comments pointed by Chip Bilbrey <chip at bilbrey.org>
- Remove Apeed reference from uapi jtag.h header
- Remove access mode from xfer and idle transactions
- Add new ioctl JTAG_SIOCMODE for set hw mode
- Add single open per device blocking
v10->v11
Notifications from kbuild test robot <lkp at intel.com>
- Add include types.h header to jtag.h
- fix incompatible type of xfer callback
- remove rdundant class defination
- Fix return order in case of xfer error
V9->v10
Comments pointed by Greg KH <gregkh at linuxfoundation.org>
- remove unnecessary alignment for pirv data
- move jtag_copy_to_user and jtag_copy_from_user code just to ioctl
- move int jtag_run_test_idle_op and jtag_xfer_op code
just to ioctl
- change return error codes to more applicable
- add missing error checks
- fix error check order in ioctl
- remove unnecessary blank lines
- add param validation to ioctl
- remove compat_ioctl
- remove only one open per JTAG port blocking.
User will care about this.
- Fix idr memory leak on jtag_exit
- change cdev device type to misc
V8->v9
Comments pointed by Arnd Bergmann <arnd at arndb.de>
- use get_user() instead of __get_user().
- change jtag->open type from int to atomic_t
- remove spinlock on jtg_open
- remove mutex on jtag_register
- add unregister_chrdev_region on jtag_init err
- add unregister_chrdev_region on jtag_exit
- remove unnecessary pointer casts
- add *data parameter to xfer function prototype
v7->v8
Comments pointed by Moritz Fischer <moritz.fischer at ettus.com>
- Fix misspelling s/friver/driver
v6->v7
Notifications from kbuild test robot <lkp at intel.com>
- Remove include asm/types.h from jtag.h
- Add include <linux/types.h> to jtag.c
v5->v6
v4->v5
v3->v4
Comments pointed by Arnd Bergmann <arnd at arndb.de>
- change transaction pointer tdio type to __u64
- change internal status type from enum to __u32
- reorder jtag_xfer members to avoid the implied padding
- add __packed attribute to jtag_xfer and jtag_run_test_idle
v2->v3
Notifications from kbuild test robot <lkp at intel.com>
- Change include path to <linux/types.h> in jtag.h
v1->v2
Comments pointed by Greg KH <gregkh at linuxfoundation.org>
- Change license type from GPLv2/BSD to GPLv2
- Change type of variables which crossed user/kernel to __type
- Remove "default n" from Kconfig
Comments pointed by Andrew Lunn <andrew at lunn.ch>
- Change list_add_tail in jtag_unregister to list_del
Comments pointed by Neil Armstrong <narmstrong at baylibre.com>
- Add SPDX-License-Identifier instead of license text
Comments pointed by Arnd Bergmann <arnd at arndb.de>
- Change __copy_to_user to memdup_user
- Change __put_user to put_user
- Change type of variables to __type for compatible 32 and 64-bit
systems
- Add check for maximum xfer data size
- Change lookup data mechanism to get jtag data from inode
- Add .compat_ioctl to file ops
- Add mem alignment for jtag priv data
Comments pointed by Tobias Klauser <tklauser at distanz.ch>
- Change function names to avoid match with variable types
- Fix description for jtag_ru_test_idle in uapi jtag.h
- Fix misprints IDEL/IDLE, trough/through
---
drivers/Kconfig | 2 +
drivers/Makefile | 1 +
drivers/jtag/Kconfig | 17 ++
drivers/jtag/Makefile | 1 +
drivers/jtag/jtag.c | 387 ++++++++++++++++++++++++++++++++++++++
include/linux/jtag.h | 49 +++++
include/uapi/linux/jtag.h | 378 +++++++++++++++++++++++++++++++++++++
7 files changed, 835 insertions(+)
create mode 100644 drivers/jtag/Kconfig
create mode 100644 drivers/jtag/Makefile
create mode 100644 drivers/jtag/jtag.c
create mode 100644 include/linux/jtag.h
create mode 100644 include/uapi/linux/jtag.h
diff --git a/drivers/Kconfig b/drivers/Kconfig
index 7bdad836fc62..c13e0a575a69 100644
--- a/drivers/Kconfig
+++ b/drivers/Kconfig
@@ -245,4 +245,6 @@ source "drivers/cdx/Kconfig"
source "drivers/dpll/Kconfig"
+source "drivers/jtag/Kconfig"
+
endmenu
diff --git a/drivers/Makefile b/drivers/Makefile
index 37fd6ce3bd7f..cb0e4a719cef 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -198,3 +198,4 @@ obj-$(CONFIG_CDX_BUS) += cdx/
obj-$(CONFIG_DPLL) += dpll/
obj-$(CONFIG_S390) += s390/
+obj-$(CONFIG_JTAG_ASPEED) += jtag/
diff --git a/drivers/jtag/Kconfig b/drivers/jtag/Kconfig
new file mode 100644
index 000000000000..47771fcd3c5b
--- /dev/null
+++ b/drivers/jtag/Kconfig
@@ -0,0 +1,17 @@
+menuconfig JTAG
+ tristate "JTAG support"
+ help
+ This provides basic core functionality support for JTAG class devices.
+ Hardware that is equipped with a JTAG microcontroller can be
+ supported by using this driver's interfaces.
+ This driver exposes a set of IOCTLs to the user space for
+ the following commands:
+ SDR: Performs an IEEE 1149.1 Data Register scan
+ SIR: Performs an IEEE 1149.1 Instruction Register scan.
+ RUNTEST: Forces the IEEE 1149.1 bus to a run state for a specified
+ number of clocks or a specified time period.
+
+ If you want this support, you should say Y here.
+
+ To compile this driver as a module, choose M here: the module will
+ be called jtag.
diff --git a/drivers/jtag/Makefile b/drivers/jtag/Makefile
new file mode 100644
index 000000000000..af374939a9e6
--- /dev/null
+++ b/drivers/jtag/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_JTAG) += jtag.o
diff --git a/drivers/jtag/jtag.c b/drivers/jtag/jtag.c
new file mode 100644
index 000000000000..070ca77ca8a6
--- /dev/null
+++ b/drivers/jtag/jtag.c
@@ -0,0 +1,387 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright (c) 2018 Mellanox Technologies. All rights reserved.
+// Copyright (c) 2018 Oleksandr Shamray <oleksandrs at mellanox.com>
+// Copyright (c) 2019 Intel Corporation
+
+#include <linux/cdev.h>
+#include <linux/device.h>
+#include <linux/jtag.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/miscdevice.h>
+#include <linux/module.h>
+#include <linux/rtnetlink.h>
+#include <linux/spinlock.h>
+#include <uapi/linux/jtag.h>
+
+static char *end_status_str[] = { "tlr", "idle", "selDR", "capDR", "sDR",
+ "ex1DR", "pDR", "ex2DR", "updDR", "selIR",
+ "capIR", "sIR", "ex1IR", "pIR", "ex2IR",
+ "updIR", "current" };
+
+struct jtag {
+ struct miscdevice miscdev;
+ const struct jtag_ops *ops;
+ int id;
+ unsigned long *priv;
+};
+
+static DEFINE_IDA(jtag_ida);
+
+void *jtag_priv(struct jtag *jtag)
+{
+ return jtag->priv;
+}
+EXPORT_SYMBOL_GPL(jtag_priv);
+
+static long jtag_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct jtag *jtag = file->private_data;
+ struct jtag_tap_state tapstate;
+ struct jtag_xfer xfer;
+ struct bitbang_packet bitbang;
+ struct tck_bitbang *bitbang_data;
+ struct jtag_mode mode;
+ u8 *xfer_data;
+ u32 data_size;
+ u32 value;
+ u32 active;
+ int err;
+
+ if (!arg)
+ return -EINVAL;
+
+ switch (cmd) {
+ case JTAG_GIOCFREQ:
+ if (!jtag->ops->freq_get)
+ return -EOPNOTSUPP;
+
+ err = jtag->ops->freq_get(jtag, &value);
+ if (err)
+ break;
+ dev_dbg(jtag->miscdev.parent, "JTAG_GIOCFREQ: freq get = %d",
+ value);
+
+ if (put_user(value, (__u32 __user *)arg))
+ err = -EFAULT;
+ break;
+
+ case JTAG_SIOCFREQ:
+ if (!jtag->ops->freq_set)
+ return -EOPNOTSUPP;
+
+ if (get_user(value, (__u32 __user *)arg))
+ return -EFAULT;
+ if (value == 0)
+ return -EINVAL;
+
+ err = jtag->ops->freq_set(jtag, value);
+ dev_dbg(jtag->miscdev.parent, "JTAG_SIOCFREQ: freq set = %d",
+ value);
+ break;
+
+ case JTAG_SIOCSTATE:
+ if (copy_from_user(&tapstate, (const void __user *)arg,
+ sizeof(struct jtag_tap_state)))
+ return -EFAULT;
+
+ if (tapstate.from > JTAG_STATE_CURRENT)
+ return -EINVAL;
+
+ if (tapstate.endstate > JTAG_STATE_CURRENT)
+ return -EINVAL;
+
+ if (tapstate.reset > JTAG_FORCE_RESET)
+ return -EINVAL;
+
+ dev_dbg(jtag->miscdev.parent,
+ "JTAG_SIOCSTATE: status set from %s to %s reset %d tck %d",
+ end_status_str[tapstate.from],
+ end_status_str[tapstate.endstate], tapstate.reset,
+ tapstate.tck);
+
+ err = jtag->ops->status_set(jtag, &tapstate);
+ break;
+
+ case JTAG_IOCXFER:
+ {
+ u8 ubit_mask = GENMASK(7, 0);
+ u8 remaining_bits = 0x0;
+ union pad_config padding;
+
+ if (copy_from_user(&xfer, (const void __user *)arg,
+ sizeof(struct jtag_xfer)))
+ return -EFAULT;
+
+ if (xfer.length >= JTAG_MAX_XFER_DATA_LEN)
+ return -EINVAL;
+
+ if (xfer.type > JTAG_SDR_XFER)
+ return -EINVAL;
+
+ if (xfer.direction > JTAG_READ_WRITE_XFER)
+ return -EINVAL;
+
+ if (xfer.from > JTAG_STATE_CURRENT)
+ return -EINVAL;
+
+ if (xfer.endstate > JTAG_STATE_CURRENT)
+ return -EINVAL;
+
+ data_size = DIV_ROUND_UP(xfer.length, BITS_PER_BYTE);
+ xfer_data = memdup_user(u64_to_user_ptr(xfer.tdio), data_size);
+
+ /* Save unused remaining bits in this transfer */
+ if ((xfer.length % BITS_PER_BYTE)) {
+ ubit_mask = GENMASK((xfer.length % BITS_PER_BYTE) - 1,
+ 0);
+ remaining_bits = xfer_data[data_size - 1] & ~ubit_mask;
+ }
+
+ if (IS_ERR(xfer_data))
+ return -EFAULT;
+ padding.int_value = xfer.padding;
+ dev_dbg(jtag->miscdev.parent,
+ "JTAG_IOCXFER: type: %s direction: %d, END : %s, padding: (value: %d) pre_pad: %d post_pad: %d, len: %d\n",
+ xfer.type ? "DR" : "IR", xfer.direction,
+ end_status_str[xfer.endstate], padding.pad_data,
+ padding.pre_pad_number, padding.post_pad_number,
+ xfer.length);
+
+ print_hex_dump_debug("I:", DUMP_PREFIX_NONE, 16, 1, xfer_data,
+ data_size, false);
+
+ err = jtag->ops->xfer(jtag, &xfer, xfer_data);
+ if (err) {
+ kfree(xfer_data);
+ return err;
+ }
+
+ print_hex_dump_debug("O:", DUMP_PREFIX_NONE, 16, 1, xfer_data,
+ data_size, false);
+
+ /* Restore unused remaining bits in this transfer */
+ xfer_data[data_size - 1] = (xfer_data[data_size - 1]
+ & ubit_mask) | remaining_bits;
+
+ err = copy_to_user(u64_to_user_ptr(xfer.tdio),
+ (void *)xfer_data, data_size);
+ kfree(xfer_data);
+ if (err)
+ return -EFAULT;
+
+ if (copy_to_user((void __user *)arg, (void *)&xfer,
+ sizeof(struct jtag_xfer)))
+ return -EFAULT;
+ break;
+ }
+
+ case JTAG_GIOCSTATUS:
+ err = jtag->ops->status_get(jtag, &value);
+ if (err)
+ break;
+ dev_dbg(jtag->miscdev.parent, "JTAG_GIOCSTATUS: status get %s",
+ end_status_str[value]);
+
+ err = put_user(value, (__u32 __user *)arg);
+ break;
+ case JTAG_IOCBITBANG:
+ if (copy_from_user(&bitbang, (const void __user *)arg,
+ sizeof(struct bitbang_packet)))
+ return -EFAULT;
+
+ if (bitbang.length >= JTAG_MAX_XFER_DATA_LEN)
+ return -EINVAL;
+
+ data_size = bitbang.length * sizeof(struct tck_bitbang);
+ bitbang_data = memdup_user((void __user *)bitbang.data,
+ data_size);
+ if (IS_ERR(bitbang_data))
+ return -EFAULT;
+
+ err = jtag->ops->bitbang(jtag, &bitbang, bitbang_data);
+ if (err) {
+ kfree(bitbang_data);
+ return err;
+ }
+ err = copy_to_user((void __user *)bitbang.data,
+ (void *)bitbang_data, data_size);
+ kfree(bitbang_data);
+ if (err)
+ return -EFAULT;
+ break;
+ case JTAG_SIOCMODE:
+ if (!jtag->ops->mode_set)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&mode, (const void __user *)arg,
+ sizeof(struct jtag_mode)))
+ return -EFAULT;
+
+ dev_dbg(jtag->miscdev.parent,
+ "JTAG_SIOCMODE: mode set feature %d mode %d",
+ mode.feature, mode.mode);
+ err = jtag->ops->mode_set(jtag, &mode);
+ break;
+ case JTAG_SIOCTRST:
+ if (!jtag->ops->trst_set)
+ return -EOPNOTSUPP;
+
+ if (get_user(active, (__u32 __user *)arg))
+ return -EFAULT;
+
+ dev_dbg(jtag->miscdev.parent,
+ "JTAG_SIOCTRST: active %d", active);
+
+ err = jtag->ops->trst_set(jtag, active);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+ return err;
+}
+
+static int jtag_open(struct inode *inode, struct file *file)
+{
+ struct jtag *jtag = container_of(file->private_data,
+ struct jtag,
+ miscdev);
+
+ file->private_data = jtag;
+ if (jtag->ops->enable(jtag))
+ return -EBUSY;
+ return nonseekable_open(inode, file);
+}
+
+static int jtag_release(struct inode *inode, struct file *file)
+{
+ struct jtag *jtag = file->private_data;
+
+ if (jtag->ops->disable(jtag))
+ return -EBUSY;
+ return 0;
+}
+
+static const struct file_operations jtag_fops = {
+ .owner = THIS_MODULE,
+ .open = jtag_open,
+ .llseek = noop_llseek,
+ .unlocked_ioctl = jtag_ioctl,
+ .release = jtag_release,
+};
+
+struct jtag *jtag_alloc(struct device *host, size_t priv_size,
+ const struct jtag_ops *ops)
+{
+ struct jtag *jtag;
+
+ if (!host)
+ return NULL;
+
+ if (!ops)
+ return NULL;
+
+ if (!ops->status_set || !ops->status_get || !ops->xfer)
+ return NULL;
+
+ jtag = kzalloc(sizeof(*jtag), GFP_KERNEL);
+ if (!jtag)
+ return NULL;
+ jtag->priv = kzalloc(priv_size, GFP_KERNEL);
+ if (!jtag->priv)
+ return NULL;
+
+ jtag->ops = ops;
+ jtag->miscdev.parent = host;
+
+ return jtag;
+}
+EXPORT_SYMBOL_GPL(jtag_alloc);
+
+void jtag_free(struct jtag *jtag)
+{
+ kfree(jtag);
+}
+EXPORT_SYMBOL_GPL(jtag_free);
+
+static int jtag_register(struct jtag *jtag)
+{
+ struct device *dev = jtag->miscdev.parent;
+ int err;
+ int id;
+
+ if (!dev)
+ return -ENODEV;
+
+ id = ida_simple_get(&jtag_ida, 0, 0, GFP_KERNEL);
+ if (id < 0)
+ return id;
+
+ jtag->id = id;
+
+ jtag->miscdev.fops = &jtag_fops;
+ jtag->miscdev.minor = MISC_DYNAMIC_MINOR;
+ jtag->miscdev.name = kasprintf(GFP_KERNEL, "jtag%d", id);
+ if (!jtag->miscdev.name) {
+ err = -ENOMEM;
+ goto err_jtag_alloc;
+ }
+
+ err = misc_register(&jtag->miscdev);
+ if (err) {
+ dev_err(jtag->miscdev.parent, "Unable to register device\n");
+ goto err_jtag_name;
+ }
+ return 0;
+
+err_jtag_name:
+ kfree(jtag->miscdev.name);
+err_jtag_alloc:
+ ida_simple_remove(&jtag_ida, id);
+ return err;
+}
+
+static void jtag_unregister(struct jtag *jtag)
+{
+ misc_deregister(&jtag->miscdev);
+ kfree(jtag->miscdev.name);
+ ida_simple_remove(&jtag_ida, jtag->id);
+}
+
+static void devm_jtag_unregister(struct device *dev, void *res)
+{
+ jtag_unregister(*(struct jtag **)res);
+}
+
+int devm_jtag_register(struct device *dev, struct jtag *jtag)
+{
+ struct jtag **ptr;
+ int ret;
+
+ ptr = devres_alloc(devm_jtag_unregister, sizeof(struct jtag *),
+ GFP_KERNEL);
+ if (!ptr)
+ return -ENOMEM;
+
+ ret = jtag_register(jtag);
+ if (!ret) {
+ *ptr = jtag;
+ devres_add(dev, ptr);
+ } else {
+ devres_free(ptr);
+ }
+ return ret;
+}
+EXPORT_SYMBOL_GPL(devm_jtag_register);
+
+static void __exit jtag_exit(void)
+{
+ ida_destroy(&jtag_ida);
+}
+
+module_exit(jtag_exit);
+
+MODULE_AUTHOR("Oleksandr Shamray <oleksandrs at mellanox.com>");
+MODULE_DESCRIPTION("Generic jtag support");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/jtag.h b/include/linux/jtag.h
new file mode 100644
index 000000000000..87396ee21df9
--- /dev/null
+++ b/include/linux/jtag.h
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2018 Mellanox Technologies. All rights reserved. */
+/* Copyright (c) 2018 Oleksandr Shamray <oleksandrs at mellanox.com> */
+/* Copyright (c) 2019 Intel Corporation */
+
+#ifndef __LINUX_JTAG_H
+#define __LINUX_JTAG_H
+
+#include <linux/types.h>
+#include <uapi/linux/jtag.h>
+
+#define JTAG_MAX_XFER_DATA_LEN (0xFFFFFFFF)
+
+struct jtag;
+/**
+ * struct jtag_ops - callbacks for JTAG control functions:
+ *
+ * @freq_get: get frequency function. Filled by dev driver
+ * @freq_set: set frequency function. Filled by dev driver
+ * @status_get: get JTAG TAPC state function. Mandatory, Filled by dev driver
+ * @status_set: set JTAG TAPC state function. Mandatory, Filled by dev driver
+ * @xfer: send JTAG xfer function. Mandatory func. Filled by dev driver
+ * @mode_set: set specific work mode for JTAG. Filled by dev driver
+ * @trst_set: set TRST pin active(pull low) for JTAG. Filled by dev driver
+ * @bitbang: set low level bitbang operations. Filled by dev driver
+ * @enable: enables JTAG interface in controller mode. Filled by dev driver
+ * @disable: disables JTAG interface controller mode. Filled by dev driver
+ */
+struct jtag_ops {
+ int (*freq_get)(struct jtag *jtag, u32 *freq);
+ int (*freq_set)(struct jtag *jtag, u32 freq);
+ int (*status_get)(struct jtag *jtag, u32 *state);
+ int (*status_set)(struct jtag *jtag, struct jtag_tap_state *endst);
+ int (*xfer)(struct jtag *jtag, struct jtag_xfer *xfer, u8 *xfer_data);
+ int (*mode_set)(struct jtag *jtag, struct jtag_mode *jtag_mode);
+ int (*trst_set)(struct jtag *jtag, u32 active);
+ int (*bitbang)(struct jtag *jtag, struct bitbang_packet *bitbang,
+ struct tck_bitbang *bitbang_data);
+ int (*enable)(struct jtag *jtag);
+ int (*disable)(struct jtag *jtag);
+};
+
+void *jtag_priv(struct jtag *jtag);
+int devm_jtag_register(struct device *dev, struct jtag *jtag);
+struct jtag *jtag_alloc(struct device *host, size_t priv_size,
+ const struct jtag_ops *ops);
+void jtag_free(struct jtag *jtag);
+
+#endif /* __LINUX_JTAG_H */
diff --git a/include/uapi/linux/jtag.h b/include/uapi/linux/jtag.h
new file mode 100644
index 000000000000..3dd0c51284f1
--- /dev/null
+++ b/include/uapi/linux/jtag.h
@@ -0,0 +1,378 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2018 Mellanox Technologies. All rights reserved. */
+/* Copyright (c) 2018 Oleksandr Shamray <oleksandrs at mellanox.com> */
+/* Copyright (c) 2019 Intel Corporation */
+
+#ifndef __UAPI_LINUX_JTAG_H
+#define __UAPI_LINUX_JTAG_H
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+/*
+ * JTAG_XFER_MODE: JTAG transfer mode. Used to set JTAG controller transfer mode
+ * This is bitmask for feature param in jtag_mode for ioctl JTAG_SIOCMODE
+ */
+#define JTAG_XFER_MODE 0
+/*
+ * JTAG_CONTROL_MODE: JTAG controller mode. Used to set JTAG controller mode
+ * This is bitmask for feature param in jtag_mode for ioctl JTAG_SIOCMODE
+ */
+#define JTAG_CONTROL_MODE 1
+/*
+ * JTAG_TCK_CYCLE_DELAY_COUNT: JTAG delay counter for aspeed_jtag_tck_cycle. Used
+ * set the number of jtag_tck_cycle delays repetitions.
+ * This is bitmask for feature param in jtag_mode for ioctl JTAG_SIOCMODE
+ */
+#define JTAG_TCK_CYCLE_DELAY_COUNT 2
+/*
+ * JTAG_CONTROLLER_OUTPUT_DISABLE: JTAG controller mode output disable, it is
+ * used to enable other devices to own the JTAG bus.
+ * This is bitmask for mode param in jtag_mode for ioctl JTAG_SIOCMODE
+ */
+#define JTAG_CONTROLLER_OUTPUT_DISABLE 0
+/*
+ * JTAG_CONTROLLER_MODE: JTAG controller mode. Used to set JTAG controller in
+ * host mode.
+ * This is bitmask for mode param in jtag_mode for ioctl JTAG_SIOCMODE
+ */
+#define JTAG_CONTROLLER_MODE 1
+/*
+ * JTAG_XFER_HW_MODE: JTAG hardware mode. Used to set HW drived or bitbang
+ * mode. This is bitmask for mode param in jtag_mode for ioctl JTAG_SIOCMODE
+ */
+#define JTAG_XFER_HW_MODE 1
+/*
+ * JTAG_XFER_SW_MODE: JTAG software mode. Used to set SW drived or bitbang
+ * mode. This is bitmask for mode param in jtag_mode for ioctl JTAG_SIOCMODE
+ */
+#define JTAG_XFER_SW_MODE 0
+
+/**
+ * enum jtag_tapstate:
+ *
+ * @JTAG_STATE_TLRESET: JTAG state machine Test Logic Reset state
+ * @JTAG_STATE_IDLE: JTAG state machine IDLE state
+ * @JTAG_STATE_SELECTDR: JTAG state machine SELECT_DR state
+ * @JTAG_STATE_CAPTUREDR: JTAG state machine CAPTURE_DR state
+ * @JTAG_STATE_SHIFTDR: JTAG state machine SHIFT_DR state
+ * @JTAG_STATE_EXIT1DR: JTAG state machine EXIT-1 DR state
+ * @JTAG_STATE_PAUSEDR: JTAG state machine PAUSE_DR state
+ * @JTAG_STATE_EXIT2DR: JTAG state machine EXIT-2 DR state
+ * @JTAG_STATE_UPDATEDR: JTAG state machine UPDATE DR state
+ * @JTAG_STATE_SELECTIR: JTAG state machine SELECT_IR state
+ * @JTAG_STATE_CAPTUREIR: JTAG state machine CAPTURE_IR state
+ * @JTAG_STATE_SHIFTIR: JTAG state machine SHIFT_IR state
+ * @JTAG_STATE_EXIT1IR: JTAG state machine EXIT-1 IR state
+ * @JTAG_STATE_PAUSEIR: JTAG state machine PAUSE_IR state
+ * @JTAG_STATE_EXIT2IR: JTAG state machine EXIT-2 IR state
+ * @JTAG_STATE_UPDATEIR: JTAG state machine UPDATE IR state
+ * @JTAG_STATE_CURRENT: JTAG current state, saved by driver
+ */
+enum jtag_tapstate {
+ JTAG_STATE_TLRESET,
+ JTAG_STATE_IDLE,
+ JTAG_STATE_SELECTDR,
+ JTAG_STATE_CAPTUREDR,
+ JTAG_STATE_SHIFTDR,
+ JTAG_STATE_EXIT1DR,
+ JTAG_STATE_PAUSEDR,
+ JTAG_STATE_EXIT2DR,
+ JTAG_STATE_UPDATEDR,
+ JTAG_STATE_SELECTIR,
+ JTAG_STATE_CAPTUREIR,
+ JTAG_STATE_SHIFTIR,
+ JTAG_STATE_EXIT1IR,
+ JTAG_STATE_PAUSEIR,
+ JTAG_STATE_EXIT2IR,
+ JTAG_STATE_UPDATEIR,
+ JTAG_STATE_CURRENT
+};
+
+/**
+ * enum jtag_reset:
+ *
+ * @JTAG_NO_RESET: JTAG run TAP from current state
+ * @JTAG_FORCE_RESET: JTAG force TAP to reset state
+ */
+enum jtag_reset {
+ JTAG_NO_RESET = 0,
+ JTAG_FORCE_RESET = 1,
+};
+
+/**
+ * enum jtag_xfer_type:
+ *
+ * @JTAG_SIR_XFER: SIR transfer
+ * @JTAG_SDR_XFER: SDR transfer
+ */
+enum jtag_xfer_type {
+ JTAG_SIR_XFER = 0,
+ JTAG_SDR_XFER = 1,
+};
+
+/**
+ * enum jtag_xfer_direction:
+ *
+ * @JTAG_READ_XFER: read transfer
+ * @JTAG_WRITE_XFER: write transfer
+ * @JTAG_READ_WRITE_XFER: read & write transfer
+ */
+enum jtag_xfer_direction {
+ JTAG_READ_XFER = 1,
+ JTAG_WRITE_XFER = 2,
+ JTAG_READ_WRITE_XFER = 3,
+};
+
+/**
+ * struct jtag_tap_state - forces JTAG state machine to go into a TAPC
+ * state
+ *
+ * @reset: 0 - run IDLE/PAUSE from current state
+ * 1 - go through TEST_LOGIC/RESET state before IDLE/PAUSE
+ * @from: initital jtag state
+ * @endstate: jtag end state
+ * @tck: clock counter
+ *
+ * Structure provide interface to JTAG device for JTAG set state execution.
+ */
+struct jtag_tap_state {
+ __u8 reset;
+ __u8 from;
+ __u8 endstate;
+ __u32 tck;
+};
+
+/**
+ * union pad_config - Padding Configuration:
+ *
+ * @type: transfer type
+ * @pre_pad_number: Number of prepadding bits bit[11:0]
+ * @post_pad_number: Number of prepadding bits bit[23:12]
+ * @pad_data : Bit value to be used by pre and post padding bit[24]
+ * @int_value: unsigned int packed padding configuration value bit[32:0]
+ *
+ * Structure provide pre and post padding configuration in a single __u32
+ */
+union pad_config {
+ struct {
+ __u32 pre_pad_number : 12;
+ __u32 post_pad_number : 12;
+ __u32 pad_data : 1;
+ __u32 rsvd : 7;
+ };
+ __u32 int_value;
+};
+
+/**
+ * struct jtag_xfer - jtag xfer:
+ *
+ * @type: transfer type
+ * @direction: xfer direction
+ * @from: xfer current state
+ * @endstate: xfer end state
+ * @padding: xfer padding
+ * @length: xfer bits length
+ * @tdio : xfer data array
+ *
+ * Structure provide interface to JTAG device for JTAG SDR/SIR xfer execution.
+ */
+struct jtag_xfer {
+ __u8 type;
+ __u8 direction;
+ __u8 from;
+ __u8 endstate;
+ __u32 padding;
+ __u32 length;
+ __u64 tdio;
+};
+
+/**
+ * struct bitbang_packet - jtag bitbang array packet:
+ *
+ * @data: JTAG Bitbang struct array pointer(input/output)
+ * @length: array size (input)
+ *
+ * Structure provide interface to JTAG device for JTAG bitbang bundle execution
+ */
+struct bitbang_packet {
+ struct tck_bitbang *data;
+ __u32 length;
+} __attribute__((__packed__));
+
+/**
+ * struct jtag_bitbang - jtag bitbang:
+ *
+ * @tms: JTAG TMS
+ * @tdi: JTAG TDI (input)
+ * @tdo: JTAG TDO (output)
+ *
+ * Structure provide interface to JTAG device for JTAG bitbang execution.
+ */
+struct tck_bitbang {
+ __u8 tms;
+ __u8 tdi;
+ __u8 tdo;
+} __attribute__((__packed__));
+
+/**
+ * struct jtag_mode - jtag mode:
+ *
+ * @feature: 0 - JTAG feature setting selector for JTAG controller HW/SW
+ * 1 - JTAG feature setting selector for controller bus mode
+ * output (enable / disable).
+ * @mode: (0 - SW / 1 - HW) for JTAG_XFER_MODE feature(0)
+ * (0 - output disable / 1 - output enable) for JTAG_CONTROL_MODE
+ * feature(1)
+ *
+ * Structure provide configuration modes to JTAG device.
+ */
+struct jtag_mode {
+ __u32 feature;
+ __u32 mode;
+};
+
+/* ioctl interface */
+#define __JTAG_IOCTL_MAGIC 0xb9
+
+#define JTAG_SIOCSTATE _IOW(__JTAG_IOCTL_MAGIC, 0, struct jtag_tap_state)
+#define JTAG_SIOCFREQ _IOW(__JTAG_IOCTL_MAGIC, 1, unsigned int)
+#define JTAG_GIOCFREQ _IOR(__JTAG_IOCTL_MAGIC, 2, unsigned int)
+#define JTAG_IOCXFER _IOWR(__JTAG_IOCTL_MAGIC, 3, struct jtag_xfer)
+#define JTAG_GIOCSTATUS _IOWR(__JTAG_IOCTL_MAGIC, 4, enum jtag_tapstate)
+#define JTAG_SIOCMODE _IOW(__JTAG_IOCTL_MAGIC, 5, unsigned int)
+#define JTAG_IOCBITBANG _IOW(__JTAG_IOCTL_MAGIC, 6, unsigned int)
+#define JTAG_SIOCTRST _IOW(__JTAG_IOCTL_MAGIC, 7, unsigned int)
+
+/**
+ * struct tms_cycle - This structure represents a tms cycle state.
+ *
+ * @tmsbits: is the bitwise representation of the needed tms transitions to
+ * move from one state to another.
+ * @count: number of jumps needed to move to the needed state.
+ *
+ */
+struct tms_cycle {
+ unsigned char tmsbits;
+ unsigned char count;
+};
+
+/*
+ * This is the complete set TMS cycles for going from any TAP state to any
+ * other TAP state, following a "shortest path" rule.
+ */
+static const struct tms_cycle _tms_cycle_lookup[][16] = {
+/* TLR RTI SelDR CapDR SDR Ex1DR*/
+/* TLR */{{0x00, 0}, {0x00, 1}, {0x02, 2}, {0x02, 3}, {0x02, 4}, {0x0a, 4},
+/* PDR Ex2DR UpdDR SelIR CapIR SIR*/
+ {0x0a, 5}, {0x2a, 6}, {0x1a, 5}, {0x06, 3}, {0x06, 4}, {0x06, 5},
+/* Ex1IR PIR Ex2IR UpdIR*/
+ {0x16, 5}, {0x16, 6}, {0x56, 7}, {0x36, 6} },
+
+/* TLR RTI SelDR CapDR SDR Ex1DR*/
+/* RTI */{{0x07, 3}, {0x00, 0}, {0x01, 1}, {0x01, 2}, {0x01, 3}, {0x05, 3},
+/* PDR Ex2DR UpdDR SelIR CapIR SIR*/
+ {0x05, 4}, {0x15, 5}, {0x0d, 4}, {0x03, 2}, {0x03, 3}, {0x03, 4},
+/* Ex1IR PIR Ex2IR UpdIR*/
+ {0x0b, 4}, {0x0b, 5}, {0x2b, 6}, {0x1b, 5} },
+
+/* TLR RTI SelDR CapDR SDR Ex1DR*/
+/* SelDR*/{{0x03, 2}, {0x03, 3}, {0x00, 0}, {0x00, 1}, {0x00, 2}, {0x02, 2},
+/* PDR Ex2DR UpdDR SelIR CapIR SIR*/
+ {0x02, 3}, {0x0a, 4}, {0x06, 3}, {0x01, 1}, {0x01, 2}, {0x01, 3},
+/* Ex1IR PIR Ex2IR UpdIR*/
+ {0x05, 3}, {0x05, 4}, {0x15, 5}, {0x0d, 4} },
+
+/* TLR RTI SelDR CapDR SDR Ex1DR*/
+/* CapDR*/{{0x1f, 5}, {0x03, 3}, {0x07, 3}, {0x00, 0}, {0x00, 1}, {0x01, 1},
+/* PDR Ex2DR UpdDR SelIR CapIR SIR*/
+ {0x01, 2}, {0x05, 3}, {0x03, 2}, {0x0f, 4}, {0x0f, 5}, {0x0f, 6},
+/* Ex1IR PIR Ex2IR UpdIR*/
+ {0x2f, 6}, {0x2f, 7}, {0xaf, 8}, {0x6f, 7} },
+
+/* TLR RTI SelDR CapDR SDR Ex1DR*/
+/* SDR */{{0x1f, 5}, {0x03, 3}, {0x07, 3}, {0x07, 4}, {0x00, 0}, {0x01, 1},
+/* PDR Ex2DR UpdDR SelIR CapIR SIR*/
+ {0x01, 2}, {0x05, 3}, {0x03, 2}, {0x0f, 4}, {0x0f, 5}, {0x0f, 6},
+/* Ex1IR PIR Ex2IR UpdIR*/
+ {0x2f, 6}, {0x2f, 7}, {0xaf, 8}, {0x6f, 7} },
+
+/* TLR RTI SelDR CapDR SDR Ex1DR*/
+/* Ex1DR*/{{0x0f, 4}, {0x01, 2}, {0x03, 2}, {0x03, 3}, {0x02, 3}, {0x00, 0},
+/* PDR Ex2DR UpdDR SelIR CapIR SIR*/
+ {0x00, 1}, {0x02, 2}, {0x01, 1}, {0x07, 3}, {0x07, 4}, {0x07, 5},
+/* Ex1IR PIR Ex2IR UpdIR*/
+ {0x17, 5}, {0x17, 6}, {0x57, 7}, {0x37, 6} },
+
+/* TLR RTI SelDR CapDR SDR Ex1DR*/
+/* PDR */{{0x1f, 5}, {0x03, 3}, {0x07, 3}, {0x07, 4}, {0x01, 2}, {0x05, 3},
+/* PDR Ex2DR UpdDR SelIR CapIR SIR*/
+ {0x00, 0}, {0x01, 1}, {0x03, 2}, {0x0f, 4}, {0x0f, 5}, {0x0f, 6},
+/* Ex1IR PIR Ex2IR UpdIR*/
+ {0x2f, 6}, {0x2f, 7}, {0xaf, 8}, {0x6f, 7} },
+
+/* TLR RTI SelDR CapDR SDR Ex1DR*/
+/* Ex2DR*/{{0x0f, 4}, {0x01, 2}, {0x03, 2}, {0x03, 3}, {0x00, 1}, {0x02, 2},
+/* PDR Ex2DR UpdDR SelIR CapIR SIR*/
+ {0x02, 3}, {0x00, 0}, {0x01, 1}, {0x07, 3}, {0x07, 4}, {0x07, 5},
+/* Ex1IR PIR Ex2IR UpdIR*/
+ {0x17, 5}, {0x17, 6}, {0x57, 7}, {0x37, 6} },
+
+/* TLR RTI SelDR CapDR SDR Ex1DR*/
+/* UpdDR*/{{0x07, 3}, {0x00, 1}, {0x01, 1}, {0x01, 2}, {0x01, 3}, {0x05, 3},
+/* PDR Ex2DR UpdDR SelIR CapIR SIR*/
+ {0x05, 4}, {0x15, 5}, {0x00, 0}, {0x03, 2}, {0x03, 3}, {0x03, 4},
+/* Ex1IR PIR Ex2IR UpdIR*/
+ {0x0b, 4}, {0x0b, 5}, {0x2b, 6}, {0x1b, 5} },
+
+/* TLR RTI SelDR CapDR SDR Ex1DR*/
+/* SelIR*/{{0x01, 1}, {0x01, 2}, {0x05, 3}, {0x05, 4}, {0x05, 5}, {0x15, 5},
+/* PDR Ex2DR UpdDR SelIR CapIR SIR*/
+ {0x15, 6}, {0x55, 7}, {0x35, 6}, {0x00, 0}, {0x00, 1}, {0x00, 2},
+/* Ex1IR PIR Ex2IR UpdIR*/
+ {0x02, 2}, {0x02, 3}, {0x0a, 4}, {0x06, 3} },
+
+/* TLR RTI SelDR CapDR SDR Ex1DR*/
+/* CapIR*/{{0x1f, 5}, {0x03, 3}, {0x07, 3}, {0x07, 4}, {0x07, 5}, {0x17, 5},
+/* PDR Ex2DR UpdDR SelIR CapIR SIR*/
+ {0x17, 6}, {0x57, 7}, {0x37, 6}, {0x0f, 4}, {0x00, 0}, {0x00, 1},
+/* Ex1IR PIR Ex2IR UpdIR*/
+ {0x01, 1}, {0x01, 2}, {0x05, 3}, {0x03, 2} },
+
+/* TLR RTI SelDR CapDR SDR Ex1DR*/
+/* SIR */{{0x1f, 5}, {0x03, 3}, {0x07, 3}, {0x07, 4}, {0x07, 5}, {0x17, 5},
+/* PDR Ex2DR UpdDR SelIR CapIR SIR*/
+ {0x17, 6}, {0x57, 7}, {0x37, 6}, {0x0f, 4}, {0x0f, 5}, {0x00, 0},
+/* Ex1IR PIR Ex2IR UpdIR*/
+ {0x01, 1}, {0x01, 2}, {0x05, 3}, {0x03, 2} },
+
+/* TLR RTI SelDR CapDR SDR Ex1DR*/
+/* Ex1IR*/{{0x0f, 4}, {0x01, 2}, {0x03, 2}, {0x03, 3}, {0x03, 4}, {0x0b, 4},
+/* PDR Ex2DR UpdDR SelIR CapIR SIR*/
+ {0x0b, 5}, {0x2b, 6}, {0x1b, 5}, {0x07, 3}, {0x07, 4}, {0x02, 3},
+/* Ex1IR PIR Ex2IR UpdIR*/
+ {0x00, 0}, {0x00, 1}, {0x02, 2}, {0x01, 1} },
+
+/* TLR RTI SelDR CapDR SDR Ex1DR*/
+/* PIR */{{0x1f, 5}, {0x03, 3}, {0x07, 3}, {0x07, 4}, {0x07, 5}, {0x17, 5},
+/* PDR Ex2DR UpdDR SelIR CapIR SIR*/
+ {0x17, 6}, {0x57, 7}, {0x37, 6}, {0x0f, 4}, {0x0f, 5}, {0x01, 2},
+/* Ex1IR PIR Ex2IR UpdIR*/
+ {0x05, 3}, {0x00, 0}, {0x01, 1}, {0x03, 2} },
+
+/* TLR RTI SelDR CapDR SDR Ex1DR*/
+/* Ex2IR*/{{0x0f, 4}, {0x01, 2}, {0x03, 2}, {0x03, 3}, {0x03, 4}, {0x0b, 4},
+/* PDR Ex2DR UpdDR SelIR CapIR SIR*/
+ {0x0b, 5}, {0x2b, 6}, {0x1b, 5}, {0x07, 3}, {0x07, 4}, {0x00, 1},
+/* Ex1IR PIR Ex2IR UpdIR*/
+ {0x02, 2}, {0x02, 3}, {0x00, 0}, {0x01, 1} },
+
+/* TLR RTI SelDR CapDR SDR Ex1DR*/
+/* UpdIR*/{{0x07, 3}, {0x00, 1}, {0x01, 1}, {0x01, 2}, {0x01, 3}, {0x05, 3},
+/* PDR Ex2DR UpdDR SelIR CapIR SIR*/
+ {0x05, 4}, {0x15, 5}, {0x0d, 4}, {0x03, 2}, {0x03, 3}, {0x03, 4},
+/* Ex1IR PIR Ex2IR UpdIR*/
+ {0x0b, 4}, {0x0b, 5}, {0x2b, 6}, {0x00, 0} },
+};
+
+#endif /* __UAPI_LINUX_JTAG_H */
--
2.25.1
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