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Diffstat (limited to 'drivers/isdn/hisax/elsa_cs.c')
-rw-r--r--drivers/isdn/hisax/elsa_cs.c585
1 files changed, 134 insertions, 451 deletions
diff --git a/drivers/isdn/hisax/elsa_cs.c b/drivers/isdn/hisax/elsa_cs.c
index 6fc6868de0b..40f6fad79de 100644
--- a/drivers/isdn/hisax/elsa_cs.c
+++ b/drivers/isdn/hisax/elsa_cs.c
@@ -1,54 +1,50 @@
/*======================================================================
- An elsa_cs PCMCIA client driver
+ An elsa_cs PCMCIA client driver
- This driver is for the Elsa PCM ISDN Cards, i.e. the MicroLink
+ This driver is for the Elsa PCM ISDN Cards, i.e. the MicroLink
- The contents of this file are subject to the Mozilla Public
- License Version 1.1 (the "License"); you may not use this file
- except in compliance with the License. You may obtain a copy of
- the License at http://www.mozilla.org/MPL/
+ The contents of this file are subject to the Mozilla Public
+ License Version 1.1 (the "License"); you may not use this file
+ except in compliance with the License. You may obtain a copy of
+ the License at http://www.mozilla.org/MPL/
- Software distributed under the License is distributed on an "AS
- IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- implied. See the License for the specific language governing
- rights and limitations under the License.
+ Software distributed under the License is distributed on an "AS
+ IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ rights and limitations under the License.
- The initial developer of the original code is David A. Hinds
- <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
- are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+ The initial developer of the original code is David A. Hinds
+ <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
- Modifications from dummy_cs.c are Copyright (C) 1999-2001 Klaus
- Lichtenwalder <Lichtenwalder@ACM.org>. All Rights Reserved.
+ Modifications from dummy_cs.c are Copyright (C) 1999-2001 Klaus
+ Lichtenwalder <Lichtenwalder@ACM.org>. All Rights Reserved.
- Alternatively, the contents of this file may be used under the
- terms of the GNU General Public License version 2 (the "GPL"), in
- which case the provisions of the GPL are applicable instead of the
- above. If you wish to allow the use of your version of this file
- only under the terms of the GPL and not to allow others to use
- your version of this file under the MPL, indicate your decision
- by deleting the provisions above and replace them with the notice
- and other provisions required by the GPL. If you do not delete
- the provisions above, a recipient may use your version of this
- file under either the MPL or the GPL.
+ Alternatively, the contents of this file may be used under the
+ terms of the GNU General Public License version 2 (the "GPL"), in
+ which case the provisions of the GPL are applicable instead of the
+ above. If you wish to allow the use of your version of this file
+ only under the terms of the GPL and not to allow others to use
+ your version of this file under the MPL, indicate your decision
+ by deleting the provisions above and replace them with the notice
+ and other provisions required by the GPL. If you do not delete
+ the provisions above, a recipient may use your version of this
+ file under either the MPL or the GPL.
-======================================================================*/
+ ======================================================================*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
-#include <linux/sched.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/ioport.h>
#include <asm/io.h>
-#include <asm/system.h>
-#include <pcmcia/cs_types.h>
-#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>
@@ -58,23 +54,6 @@ MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Elsa PCM cards");
MODULE_AUTHOR("Klaus Lichtenwalder");
MODULE_LICENSE("Dual MPL/GPL");
-/*
- All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
- you do not define PCMCIA_DEBUG at all, all the debug code will be
- left out. If you compile with PCMCIA_DEBUG=0, the debug code will
- be present but disabled -- but it can then be enabled for specific
- modules at load time with a 'pc_debug=#' option to insmod.
-*/
-
-#ifdef PCMCIA_DEBUG
-static int pc_debug = PCMCIA_DEBUG;
-module_param(pc_debug, int, 0);
-#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args);
-static char *version =
-"elsa_cs.c $Revision: 1.2.2.4 $ $Date: 2004/01/25 15:07:06 $ (K.Lichtenwalder)";
-#else
-#define DEBUG(n, args...)
-#endif
/*====================================================================*/
@@ -83,426 +62,144 @@ static char *version =
static int protocol = 2; /* EURO-ISDN Default */
module_param(protocol, int, 0);
-/*====================================================================*/
-
-/*
- The event() function is this driver's Card Services event handler.
- It will be called by Card Services when an appropriate card status
- event is received. The config() and release() entry points are
- used to configure or release a socket, in response to card insertion
- and ejection events. They are invoked from the elsa_cs event
- handler.
-*/
-
-static void elsa_cs_config(dev_link_t *link);
-static void elsa_cs_release(dev_link_t *link);
-static int elsa_cs_event(event_t event, int priority,
- event_callback_args_t *args);
-
-/*
- The attach() and detach() entry points are used to create and destroy
- "instances" of the driver, where each instance represents everything
- needed to manage one actual PCMCIA card.
-*/
-
-static dev_link_t *elsa_cs_attach(void);
-static void elsa_cs_detach(dev_link_t *);
-
-/*
- The dev_info variable is the "key" that is used to match up this
- device driver with appropriate cards, through the card configuration
- database.
-*/
-
-static dev_info_t dev_info = "elsa_cs";
-
-/*
- A linked list of "instances" of the elsa_cs device. Each actual
- PCMCIA card corresponds to one device instance, and is described
- by one dev_link_t structure (defined in ds.h).
-
- You may not want to use a linked list for this -- for example, the
- memory card driver uses an array of dev_link_t pointers, where minor
- device numbers are used to derive the corresponding array index.
-*/
-
-static dev_link_t *dev_list = NULL;
-
-/*
- A dev_link_t structure has fields for most things that are needed
- to keep track of a socket, but there will usually be some device
- specific information that also needs to be kept track of. The
- 'priv' pointer in a dev_link_t structure can be used to point to
- a device-specific private data structure, like this.
-
- To simplify the data structure handling, we actually include the
- dev_link_t structure in the device's private data structure.
-
- A driver needs to provide a dev_node_t structure for each device
- on a card. In some cases, there is only one device per card (for
- example, ethernet cards, modems). In other cases, there may be
- many actual or logical devices (SCSI adapters, memory cards with
- multiple partitions). The dev_node_t structures need to be kept
- in a linked list starting at the 'dev' field of a dev_link_t
- structure. We allocate them in the card's private data structure,
- because they generally shouldn't be allocated dynamically.
- In this case, we also provide a flag to indicate if a device is
- "stopped" due to a power management event, or card ejection. The
- device IO routines can use a flag like this to throttle IO to a
- card that is not ready to accept it.
-*/
+static int elsa_cs_config(struct pcmcia_device *link);
+static void elsa_cs_release(struct pcmcia_device *link);
+static void elsa_cs_detach(struct pcmcia_device *p_dev);
typedef struct local_info_t {
- dev_link_t link;
- dev_node_t node;
- int busy;
- int cardnr;
+ struct pcmcia_device *p_dev;
+ int busy;
+ int cardnr;
} local_info_t;
-/*======================================================================
-
- elsa_cs_attach() creates an "instance" of the driver, allocatingx
- local data structures for one device. The device is registered
- with Card Services.
-
- The dev_link structure is initialized, but we don't actually
- configure the card at this point -- we wait until we receive a
- card insertion event.
-
-======================================================================*/
-
-static dev_link_t *elsa_cs_attach(void)
+static int elsa_cs_probe(struct pcmcia_device *link)
{
- client_reg_t client_reg;
- dev_link_t *link;
- local_info_t *local;
- int ret;
-
- DEBUG(0, "elsa_cs_attach()\n");
-
- /* Allocate space for private device-specific data */
- local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
- if (!local) return NULL;
- memset(local, 0, sizeof(local_info_t));
- local->cardnr = -1;
- link = &local->link; link->priv = local;
-
- /* Interrupt setup */
- link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
- link->irq.IRQInfo1 = IRQ_LEVEL_ID|IRQ_SHARE_ID;
- link->irq.Handler = NULL;
-
- /*
- General socket configuration defaults can go here. In this
- client, we assume very little, and rely on the CIS for almost
- everything. In most clients, many details (i.e., number, sizes,
- and attributes of IO windows) are fixed by the nature of the
- device, and can be hard-wired here.
- */
- link->io.NumPorts1 = 8;
- link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
- link->io.IOAddrLines = 3;
-
- link->conf.Attributes = CONF_ENABLE_IRQ;
- link->conf.Vcc = 50;
- link->conf.IntType = INT_MEMORY_AND_IO;
-
- /* Register with Card Services */
- link->next = dev_list;
- dev_list = link;
- client_reg.dev_info = &dev_info;
- client_reg.Version = 0x0210;
- client_reg.event_callback_args.client_data = link;
- ret = pcmcia_register_client(&link->handle, &client_reg);
- if (ret != CS_SUCCESS) {
- cs_error(link->handle, RegisterClient, ret);
- elsa_cs_detach(link);
- return NULL;
- }
-
- return link;
-} /* elsa_cs_attach */
+ local_info_t *local;
-/*======================================================================
+ dev_dbg(&link->dev, "elsa_cs_attach()\n");
- This deletes a driver "instance". The device is de-registered
- with Card Services. If it has been released, all local data
- structures are freed. Otherwise, the structures will be freed
- when the device is released.
+ /* Allocate space for private device-specific data */
+ local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
+ if (!local) return -ENOMEM;
-======================================================================*/
-
-static void elsa_cs_detach(dev_link_t *link)
-{
- dev_link_t **linkp;
- local_info_t *info = link->priv;
- int ret;
+ local->p_dev = link;
+ link->priv = local;
- DEBUG(0, "elsa_cs_detach(0x%p)\n", link);
+ local->cardnr = -1;
- /* Locate device structure */
- for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
- if (*linkp == link) break;
- if (*linkp == NULL)
- return;
+ return elsa_cs_config(link);
+} /* elsa_cs_attach */
- if (link->state & DEV_CONFIG)
- elsa_cs_release(link);
+static void elsa_cs_detach(struct pcmcia_device *link)
+{
+ local_info_t *info = link->priv;
- /* Break the link with Card Services */
- if (link->handle) {
- ret = pcmcia_deregister_client(link->handle);
- if (ret != CS_SUCCESS)
- cs_error(link->handle, DeregisterClient, ret);
- }
+ dev_dbg(&link->dev, "elsa_cs_detach(0x%p)\n", link);
- /* Unlink device structure and free it */
- *linkp = link->next;
- kfree(info);
+ info->busy = 1;
+ elsa_cs_release(link);
+ kfree(info);
} /* elsa_cs_detach */
-/*======================================================================
-
- elsa_cs_config() is scheduled to run after a CARD_INSERTION event
- is received, to configure the PCMCIA socket, and to make the
- device available to the system.
-
-======================================================================*/
-static int get_tuple(client_handle_t handle, tuple_t *tuple,
- cisparse_t *parse)
+static int elsa_cs_configcheck(struct pcmcia_device *p_dev, void *priv_data)
{
- int i = pcmcia_get_tuple_data(handle, tuple);
- if (i != CS_SUCCESS) return i;
- return pcmcia_parse_tuple(handle, tuple, parse);
+ int j;
+
+ p_dev->io_lines = 3;
+ p_dev->resource[0]->end = 8;
+ p_dev->resource[0]->flags &= IO_DATA_PATH_WIDTH;
+ p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
+
+ if ((p_dev->resource[0]->end) && p_dev->resource[0]->start) {
+ printk(KERN_INFO "(elsa_cs: looks like the 96 model)\n");
+ if (!pcmcia_request_io(p_dev))
+ return 0;
+ } else {
+ printk(KERN_INFO "(elsa_cs: looks like the 97 model)\n");
+ for (j = 0x2f0; j > 0x100; j -= 0x10) {
+ p_dev->resource[0]->start = j;
+ if (!pcmcia_request_io(p_dev))
+ return 0;
+ }
+ }
+ return -ENODEV;
}
-static int first_tuple(client_handle_t handle, tuple_t *tuple,
- cisparse_t *parse)
+static int elsa_cs_config(struct pcmcia_device *link)
{
- int i = pcmcia_get_first_tuple(handle, tuple);
- if (i != CS_SUCCESS) return i;
- return get_tuple(handle, tuple, parse);
-}
+ int i;
+ IsdnCard_t icard;
-static int next_tuple(client_handle_t handle, tuple_t *tuple,
- cisparse_t *parse)
-{
- int i = pcmcia_get_next_tuple(handle, tuple);
- if (i != CS_SUCCESS) return i;
- return get_tuple(handle, tuple, parse);
-}
+ dev_dbg(&link->dev, "elsa_config(0x%p)\n", link);
-static void elsa_cs_config(dev_link_t *link)
-{
- client_handle_t handle;
- tuple_t tuple;
- cisparse_t parse;
- local_info_t *dev;
- int i, j, last_fn;
- u_short buf[128];
- cistpl_cftable_entry_t *cf = &parse.cftable_entry;
- IsdnCard_t icard;
-
- DEBUG(0, "elsa_config(0x%p)\n", link);
- handle = link->handle;
- dev = link->priv;
-
- /*
- This reads the card's CONFIG tuple to find its configuration
- registers.
- */
- tuple.DesiredTuple = CISTPL_CONFIG;
- tuple.TupleData = (cisdata_t *)buf;
- tuple.TupleDataMax = 255;
- tuple.TupleOffset = 0;
- tuple.Attributes = 0;
- i = first_tuple(handle, &tuple, &parse);
- if (i != CS_SUCCESS) {
- last_fn = ParseTuple;
- goto cs_failed;
- }
- link->conf.ConfigBase = parse.config.base;
- link->conf.Present = parse.config.rmask[0];
-
- /* Configure card */
- link->state |= DEV_CONFIG;
-
- tuple.TupleData = (cisdata_t *)buf;
- tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
- tuple.Attributes = 0;
- tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
- i = first_tuple(handle, &tuple, &parse);
- while (i == CS_SUCCESS) {
- if ( (cf->io.nwin > 0) && cf->io.win[0].base) {
- printk(KERN_INFO "(elsa_cs: looks like the 96 model)\n");
- link->conf.ConfigIndex = cf->index;
- link->io.BasePort1 = cf->io.win[0].base;
- i = pcmcia_request_io(link->handle, &link->io);
- if (i == CS_SUCCESS) break;
- } else {
- printk(KERN_INFO "(elsa_cs: looks like the 97 model)\n");
- link->conf.ConfigIndex = cf->index;
- for (i = 0, j = 0x2f0; j > 0x100; j -= 0x10) {
- link->io.BasePort1 = j;
- i = pcmcia_request_io(link->handle, &link->io);
- if (i == CS_SUCCESS) break;
- }
- break;
- }
- i = next_tuple(handle, &tuple, &parse);
- }
-
- if (i != CS_SUCCESS) {
- last_fn = RequestIO;
- goto cs_failed;
- }
-
- i = pcmcia_request_irq(link->handle, &link->irq);
- if (i != CS_SUCCESS) {
- link->irq.AssignedIRQ = 0;
- last_fn = RequestIRQ;
- goto cs_failed;
- }
-
- i = pcmcia_request_configuration(link->handle, &link->conf);
- if (i != CS_SUCCESS) {
- last_fn = RequestConfiguration;
- goto cs_failed;
- }
-
- /* At this point, the dev_node_t structure(s) should be
- initialized and arranged in a linked list at link->dev. *//* */
- sprintf(dev->node.dev_name, "elsa");
- dev->node.major = dev->node.minor = 0x0;
-
- link->dev = &dev->node;
-
- /* Finally, report what we've done */
- printk(KERN_INFO "%s: index 0x%02x: Vcc %d.%d",
- dev->node.dev_name, link->conf.ConfigIndex,
- link->conf.Vcc/10, link->conf.Vcc%10);
- if (link->conf.Vpp1)
- printk(", Vpp %d.%d", link->conf.Vpp1/10, link->conf.Vpp1%10);
- if (link->conf.Attributes & CONF_ENABLE_IRQ)
- printk(", irq %d", link->irq.AssignedIRQ);
- if (link->io.NumPorts1)
- printk(", io 0x%04x-0x%04x", link->io.BasePort1,
- link->io.BasePort1+link->io.NumPorts1-1);
- if (link->io.NumPorts2)
- printk(" & 0x%04x-0x%04x", link->io.BasePort2,
- link->io.BasePort2+link->io.NumPorts2-1);
- printk("\n");
-
- link->state &= ~DEV_CONFIG_PENDING;
-
- icard.para[0] = link->irq.AssignedIRQ;
- icard.para[1] = link->io.BasePort1;
- icard.protocol = protocol;
- icard.typ = ISDN_CTYPE_ELSA_PCMCIA;
-
- i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
- if (i < 0) {
- printk(KERN_ERR "elsa_cs: failed to initialize Elsa PCMCIA %d at i/o %#x\n",
- i, link->io.BasePort1);
- elsa_cs_release(link);
- } else
- ((local_info_t*)link->priv)->cardnr = i;
-
- return;
-cs_failed:
- cs_error(link->handle, last_fn, i);
- elsa_cs_release(link);
-} /* elsa_cs_config */
+ link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
-/*======================================================================
+ i = pcmcia_loop_config(link, elsa_cs_configcheck, NULL);
+ if (i != 0)
+ goto failed;
+
+ if (!link->irq)
+ goto failed;
+
+ i = pcmcia_enable_device(link);
+ if (i != 0)
+ goto failed;
- After a card is removed, elsa_cs_release() will unregister the net
- device, and release the PCMCIA configuration. If the device is
- still open, this will be postponed until it is closed.
+ icard.para[0] = link->irq;
+ icard.para[1] = link->resource[0]->start;
+ icard.protocol = protocol;
+ icard.typ = ISDN_CTYPE_ELSA_PCMCIA;
-======================================================================*/
+ i = hisax_init_pcmcia(link, &(((local_info_t *)link->priv)->busy), &icard);
+ if (i < 0) {
+ printk(KERN_ERR "elsa_cs: failed to initialize Elsa "
+ "PCMCIA %d with %pR\n", i, link->resource[0]);
+ elsa_cs_release(link);
+ } else
+ ((local_info_t *)link->priv)->cardnr = i;
-static void elsa_cs_release(dev_link_t *link)
+ return 0;
+failed:
+ elsa_cs_release(link);
+ return -ENODEV;
+} /* elsa_cs_config */
+
+static void elsa_cs_release(struct pcmcia_device *link)
{
- local_info_t *local = link->priv;
+ local_info_t *local = link->priv;
- DEBUG(0, "elsa_cs_release(0x%p)\n", link);
+ dev_dbg(&link->dev, "elsa_cs_release(0x%p)\n", link);
- if (local) {
- if (local->cardnr >= 0) {
- /* no unregister function with hisax */
- HiSax_closecard(local->cardnr);
+ if (local) {
+ if (local->cardnr >= 0) {
+ /* no unregister function with hisax */
+ HiSax_closecard(local->cardnr);
+ }
}
- }
- /* Unlink the device chain */
- link->dev = NULL;
-
- /* Don't bother checking to see if these succeed or not */
- if (link->win)
- pcmcia_release_window(link->win);
- pcmcia_release_configuration(link->handle);
- pcmcia_release_io(link->handle, &link->io);
- pcmcia_release_irq(link->handle, &link->irq);
- link->state &= ~DEV_CONFIG;
-} /* elsa_cs_release */
-/*======================================================================
+ pcmcia_disable_device(link);
+} /* elsa_cs_release */
- The card status event handler. Mostly, this schedules other
- stuff to run after an event is received. A CARD_REMOVAL event
- also sets some flags to discourage the net drivers from trying
- to talk to the card any more.
+static int elsa_suspend(struct pcmcia_device *link)
+{
+ local_info_t *dev = link->priv;
- When a CARD_REMOVAL event is received, we immediately set a flag
- to block future accesses to this device. All the functions that
- actually access the device should check this flag to make sure
- the card is still present.
+ dev->busy = 1;
-======================================================================*/
+ return 0;
+}
-static int elsa_cs_event(event_t event, int priority,
- event_callback_args_t *args)
+static int elsa_resume(struct pcmcia_device *link)
{
- dev_link_t *link = args->client_data;
- local_info_t *dev = link->priv;
-
- DEBUG(1, "elsa_cs_event(%d)\n", event);
-
- switch (event) {
- case CS_EVENT_CARD_REMOVAL:
- link->state &= ~DEV_PRESENT;
- if (link->state & DEV_CONFIG) {
- ((local_info_t*)link->priv)->busy = 1;
- elsa_cs_release(link);
- }
- break;
- case CS_EVENT_CARD_INSERTION:
- link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
- elsa_cs_config(link);
- break;
- case CS_EVENT_PM_SUSPEND:
- link->state |= DEV_SUSPEND;
- /* Fall through... */
- case CS_EVENT_RESET_PHYSICAL:
- /* Mark the device as stopped, to block IO until later */
- dev->busy = 1;
- if (link->state & DEV_CONFIG)
- pcmcia_release_configuration(link->handle);
- break;
- case CS_EVENT_PM_RESUME:
- link->state &= ~DEV_SUSPEND;
- /* Fall through... */
- case CS_EVENT_CARD_RESET:
- if (link->state & DEV_CONFIG)
- pcmcia_request_configuration(link->handle, &link->conf);
- dev->busy = 0;
- break;
- }
- return 0;
-} /* elsa_cs_event */
-
-static struct pcmcia_device_id elsa_ids[] = {
+ local_info_t *dev = link->priv;
+
+ dev->busy = 0;
+
+ return 0;
+}
+
+static const struct pcmcia_device_id elsa_ids[] = {
PCMCIA_DEVICE_PROD_ID12("ELSA AG (Aachen, Germany)", "MicroLink ISDN/MC ", 0x983de2c4, 0x333ba257),
PCMCIA_DEVICE_PROD_ID12("ELSA GmbH, Aachen", "MicroLink ISDN/MC ", 0x639e5718, 0x333ba257),
PCMCIA_DEVICE_NULL
@@ -511,25 +208,11 @@ MODULE_DEVICE_TABLE(pcmcia, elsa_ids);
static struct pcmcia_driver elsa_cs_driver = {
.owner = THIS_MODULE,
- .drv = {
- .name = "elsa_cs",
- },
- .attach = elsa_cs_attach,
- .event = elsa_cs_event,
- .detach = elsa_cs_detach,
+ .name = "elsa_cs",
+ .probe = elsa_cs_probe,
+ .remove = elsa_cs_detach,
.id_table = elsa_ids,
+ .suspend = elsa_suspend,
+ .resume = elsa_resume,
};
-
-static int __init init_elsa_cs(void)
-{
- return pcmcia_register_driver(&elsa_cs_driver);
-}
-
-static void __exit exit_elsa_cs(void)
-{
- pcmcia_unregister_driver(&elsa_cs_driver);
- BUG_ON(dev_list != NULL);
-}
-
-module_init(init_elsa_cs);
-module_exit(exit_elsa_cs);
+module_pcmcia_driver(elsa_cs_driver);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-13 16:27:39 +0000