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OpenCloudOS-Kernel/drivers/bluetooth/btbcm.c

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
*
* Bluetooth support for Broadcom devices
*
* Copyright (C) 2015 Intel Corporation
*/
#include <linux/module.h>
#include <linux/firmware.h>
#include <linux/dmi.h>
#include <linux/of.h>
#include <asm/unaligned.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include "btbcm.h"
#define VERSION "0.1"
#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
#define BDADDR_BCM20702A1 (&(bdaddr_t) {{0x00, 0x00, 0xa0, 0x02, 0x70, 0x20}})
#define BDADDR_BCM2076B1 (&(bdaddr_t) {{0x79, 0x56, 0x00, 0xa0, 0x76, 0x20}})
#define BDADDR_BCM43430A0 (&(bdaddr_t) {{0xac, 0x1f, 0x12, 0xa0, 0x43, 0x43}})
#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
#define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
#define BDADDR_BCM4334B0 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb0, 0x34, 0x43}})
#define BDADDR_BCM4345C5 (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0xc5, 0x45, 0x43}})
#define BDADDR_BCM43341B (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0x1b, 0x34, 0x43}})
#define BCM_FW_NAME_LEN 64
#define BCM_FW_NAME_COUNT_MAX 4
/* For kmalloc-ing the fw-name array instead of putting it on the stack */
typedef char bcm_fw_name[BCM_FW_NAME_LEN];
int btbcm_check_bdaddr(struct hci_dev *hdev)
{
struct hci_rp_read_bd_addr *bda;
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
int err = PTR_ERR(skb);
bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err);
return err;
}
if (skb->len != sizeof(*bda)) {
bt_dev_err(hdev, "BCM: Device address length mismatch");
kfree_skb(skb);
return -EIO;
}
bda = (struct hci_rp_read_bd_addr *)skb->data;
/* Check if the address indicates a controller with either an
* invalid or default address. In both cases the device needs
* to be marked as not having a valid address.
*
* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
* with no configured address.
*
* The address 20:70:02:A0:00:00 indicates a BCM20702A1 controller
* with no configured address.
*
* The address 20:76:A0:00:56:79 indicates a BCM2076B1 controller
* with no configured address.
*
* The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
* with waiting for configuration state.
*
* The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
* with waiting for configuration state.
*
* The address 43:43:A0:12:1F:AC indicates a BCM43430A0 controller
* with no configured address.
*/
if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) ||
!bacmp(&bda->bdaddr, BDADDR_BCM20702A1) ||
!bacmp(&bda->bdaddr, BDADDR_BCM2076B1) ||
!bacmp(&bda->bdaddr, BDADDR_BCM4324B3) ||
!bacmp(&bda->bdaddr, BDADDR_BCM4330B1) ||
!bacmp(&bda->bdaddr, BDADDR_BCM4334B0) ||
!bacmp(&bda->bdaddr, BDADDR_BCM4345C5) ||
!bacmp(&bda->bdaddr, BDADDR_BCM43430A0) ||
!bacmp(&bda->bdaddr, BDADDR_BCM43341B)) {
bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
&bda->bdaddr);
set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
}
kfree_skb(skb);
return 0;
}
EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
{
struct sk_buff *skb;
int err;
skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "BCM: Change address command failed (%d)", err);
return err;
}
kfree_skb(skb);
return 0;
}
EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
int btbcm_read_pcm_int_params(struct hci_dev *hdev,
struct bcm_set_pcm_int_params *params)
{
struct sk_buff *skb;
int err = 0;
skb = __hci_cmd_sync(hdev, 0xfc1d, 0, NULL, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "BCM: Read PCM int params failed (%d)", err);
return err;
}
if (skb->len != 6 || skb->data[0]) {
bt_dev_err(hdev, "BCM: Read PCM int params length mismatch");
kfree_skb(skb);
return -EIO;
}
if (params)
memcpy(params, skb->data + 1, 5);
kfree_skb(skb);
return 0;
}
EXPORT_SYMBOL_GPL(btbcm_read_pcm_int_params);
int btbcm_write_pcm_int_params(struct hci_dev *hdev,
const struct bcm_set_pcm_int_params *params)
{
struct sk_buff *skb;
int err;
skb = __hci_cmd_sync(hdev, 0xfc1c, 5, params, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "BCM: Write PCM int params failed (%d)", err);
return err;
}
kfree_skb(skb);
return 0;
}
EXPORT_SYMBOL_GPL(btbcm_write_pcm_int_params);
int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
{
const struct hci_command_hdr *cmd;
const u8 *fw_ptr;
size_t fw_size;
struct sk_buff *skb;
u16 opcode;
int err = 0;
/* Start Download */
skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "BCM: Download Minidrv command failed (%d)",
err);
goto done;
}
kfree_skb(skb);
/* 50 msec delay after Download Minidrv completes */
msleep(50);
fw_ptr = fw->data;
fw_size = fw->size;
while (fw_size >= sizeof(*cmd)) {
const u8 *cmd_param;
cmd = (struct hci_command_hdr *)fw_ptr;
fw_ptr += sizeof(*cmd);
fw_size -= sizeof(*cmd);
if (fw_size < cmd->plen) {
bt_dev_err(hdev, "BCM: Patch is corrupted");
err = -EINVAL;
goto done;
}
cmd_param = fw_ptr;
fw_ptr += cmd->plen;
fw_size -= cmd->plen;
opcode = le16_to_cpu(cmd->opcode);
skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
bt_dev_err(hdev, "BCM: Patch command %04x failed (%d)",
opcode, err);
goto done;
}
kfree_skb(skb);
}
/* 250 msec delay after Launch Ram completes */
msleep(250);
done:
return err;
}
EXPORT_SYMBOL(btbcm_patchram);
static int btbcm_reset(struct hci_dev *hdev)
{
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
int err = PTR_ERR(skb);
bt_dev_err(hdev, "BCM: Reset failed (%d)", err);
return err;
}
kfree_skb(skb);
/* 100 msec delay for module to complete reset process */
msleep(100);
return 0;
}
static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev)
{
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
bt_dev_err(hdev, "BCM: Reading local name failed (%ld)",
PTR_ERR(skb));
return skb;
}
if (skb->len != sizeof(struct hci_rp_read_local_name)) {
bt_dev_err(hdev, "BCM: Local name length mismatch");
kfree_skb(skb);
return ERR_PTR(-EIO);
}
return skb;
}
static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
{
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
bt_dev_err(hdev, "BCM: Reading local version info failed (%ld)",
PTR_ERR(skb));
return skb;
}
if (skb->len != sizeof(struct hci_rp_read_local_version)) {
bt_dev_err(hdev, "BCM: Local version length mismatch");
kfree_skb(skb);
return ERR_PTR(-EIO);
}
return skb;
}
static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev)
{
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
bt_dev_err(hdev, "BCM: Read verbose config info failed (%ld)",
PTR_ERR(skb));
return skb;
}
if (skb->len != 7) {
bt_dev_err(hdev, "BCM: Verbose config length mismatch");
kfree_skb(skb);
return ERR_PTR(-EIO);
}
return skb;
}
static struct sk_buff *btbcm_read_controller_features(struct hci_dev *hdev)
{
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
bt_dev_err(hdev, "BCM: Read controller features failed (%ld)",
PTR_ERR(skb));
return skb;
}
if (skb->len != 9) {
bt_dev_err(hdev, "BCM: Controller features length mismatch");
kfree_skb(skb);
return ERR_PTR(-EIO);
}
return skb;
}
static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
{
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
bt_dev_err(hdev, "BCM: Read USB product info failed (%ld)",
PTR_ERR(skb));
return skb;
}
if (skb->len != 5) {
bt_dev_err(hdev, "BCM: USB product length mismatch");
kfree_skb(skb);
return ERR_PTR(-EIO);
}
return skb;
}
static const struct dmi_system_id disable_broken_read_transmit_power[] = {
{
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,1"),
},
},
{
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,2"),
},
},
{
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,4"),
},
},
{
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,1"),
},
},
{
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,2"),
},
},
{
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,1"),
},
},
{
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,2"),
},
},
{ }
};
static int btbcm_read_info(struct hci_dev *hdev)
{
struct sk_buff *skb;
/* Read Verbose Config Version Info */
skb = btbcm_read_verbose_config(hdev);
if (IS_ERR(skb))
return PTR_ERR(skb);
bt_dev_info(hdev, "BCM: chip id %u", skb->data[1]);
kfree_skb(skb);
return 0;
}
static int btbcm_print_controller_features(struct hci_dev *hdev)
{
struct sk_buff *skb;
/* Read Controller Features */
skb = btbcm_read_controller_features(hdev);
if (IS_ERR(skb))
return PTR_ERR(skb);
bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
kfree_skb(skb);
/* Read DMI and disable broken Read LE Min/Max Tx Power */
if (dmi_first_match(disable_broken_read_transmit_power))
set_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks);
return 0;
}
static int btbcm_print_local_name(struct hci_dev *hdev)
{
struct sk_buff *skb;
/* Read Local Name */
skb = btbcm_read_local_name(hdev);
if (IS_ERR(skb))
return PTR_ERR(skb);
bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
kfree_skb(skb);
return 0;
}
struct bcm_subver_table {
u16 subver;
const char *name;
};
static const struct bcm_subver_table bcm_uart_subver_table[] = {
{ 0x1111, "BCM4362A2" }, /* 000.017.017 */
{ 0x4103, "BCM4330B1" }, /* 002.001.003 */
{ 0x410d, "BCM4334B0" }, /* 002.001.013 */
{ 0x410e, "BCM43341B0" }, /* 002.001.014 */
{ 0x4204, "BCM2076B1" }, /* 002.002.004 */
{ 0x4406, "BCM4324B3" }, /* 002.004.006 */
{ 0x4606, "BCM4324B5" }, /* 002.006.006 */
{ 0x6109, "BCM4335C0" }, /* 003.001.009 */
{ 0x610c, "BCM4354" }, /* 003.001.012 */
{ 0x2122, "BCM4343A0" }, /* 001.001.034 */
{ 0x2209, "BCM43430A1" }, /* 001.002.009 */
{ 0x6119, "BCM4345C0" }, /* 003.001.025 */
{ 0x6606, "BCM4345C5" }, /* 003.006.006 */
{ 0x230f, "BCM4356A2" }, /* 001.003.015 */
{ 0x220e, "BCM20702A1" }, /* 001.002.014 */
{ 0x420d, "BCM4349B1" }, /* 002.002.013 */
{ 0x420e, "BCM4349B1" }, /* 002.002.014 */
{ 0x4217, "BCM4329B1" }, /* 002.002.023 */
{ 0x6106, "BCM4359C0" }, /* 003.001.006 */
{ 0x4106, "BCM4335A0" }, /* 002.001.006 */
{ 0x410c, "BCM43430B0" }, /* 002.001.012 */
{ 0x2119, "BCM4373A0" }, /* 001.001.025 */
{ }
};
static const struct bcm_subver_table bcm_usb_subver_table[] = {
{ 0x2105, "BCM20703A1" }, /* 001.001.005 */
{ 0x210b, "BCM43142A0" }, /* 001.001.011 */
{ 0x2112, "BCM4314A0" }, /* 001.001.018 */
{ 0x2118, "BCM20702A0" }, /* 001.001.024 */
{ 0x2126, "BCM4335A0" }, /* 001.001.038 */
{ 0x220e, "BCM20702A1" }, /* 001.002.014 */
{ 0x230f, "BCM4356A2" }, /* 001.003.015 */
{ 0x4106, "BCM4335B0" }, /* 002.001.006 */
{ 0x410e, "BCM20702B0" }, /* 002.001.014 */
{ 0x6109, "BCM4335C0" }, /* 003.001.009 */
{ 0x610c, "BCM4354" }, /* 003.001.012 */
{ 0x6607, "BCM4350C5" }, /* 003.006.007 */
{ }
};
/*
* This currently only looks up the device tree board appendix,
* but can be expanded to other mechanisms.
*/
static const char *btbcm_get_board_name(struct device *dev)
{
#ifdef CONFIG_OF
struct device_node *root;
char *board_type;
const char *tmp;
int len;
int i;
root = of_find_node_by_path("/");
if (!root)
return NULL;
if (of_property_read_string_index(root, "compatible", 0, &tmp))
return NULL;
/* get rid of any '/' in the compatible string */
len = strlen(tmp) + 1;
board_type = devm_kzalloc(dev, len, GFP_KERNEL);
strscpy(board_type, tmp, len);
for (i = 0; i < board_type[i]; i++) {
if (board_type[i] == '/')
board_type[i] = '-';
}
of_node_put(root);
return board_type;
#else
return NULL;
#endif
}
int btbcm_initialize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode)
{
u16 subver, rev, pid, vid;
struct sk_buff *skb;
struct hci_rp_read_local_version *ver;
const struct bcm_subver_table *bcm_subver_table;
const char *hw_name = NULL;
const char *board_name;
char postfix[16] = "";
int fw_name_count = 0;
bcm_fw_name *fw_name;
const struct firmware *fw;
int i, err;
board_name = btbcm_get_board_name(&hdev->dev);
/* Reset */
err = btbcm_reset(hdev);
if (err)
return err;
/* Read Local Version Info */
skb = btbcm_read_local_version(hdev);
if (IS_ERR(skb))
return PTR_ERR(skb);
ver = (struct hci_rp_read_local_version *)skb->data;
rev = le16_to_cpu(ver->hci_rev);
subver = le16_to_cpu(ver->lmp_subver);
kfree_skb(skb);
/* Read controller information */
if (!(*fw_load_done)) {
err = btbcm_read_info(hdev);
if (err)
return err;
}
if (!use_autobaud_mode) {
err = btbcm_print_controller_features(hdev);
if (err)
return err;
err = btbcm_print_local_name(hdev);
if (err)
return err;
}
bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table :
bcm_uart_subver_table;
for (i = 0; bcm_subver_table[i].name; i++) {
if (subver == bcm_subver_table[i].subver) {
hw_name = bcm_subver_table[i].name;
break;
}
}
bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u",
hw_name ? hw_name : "BCM", (subver & 0xe000) >> 13,
(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
if (*fw_load_done)
return 0;
if (hdev->bus == HCI_USB) {
/* Read USB Product Info */
skb = btbcm_read_usb_product(hdev);
if (IS_ERR(skb))
return PTR_ERR(skb);
vid = get_unaligned_le16(skb->data + 1);
pid = get_unaligned_le16(skb->data + 3);
kfree_skb(skb);
snprintf(postfix, sizeof(postfix), "-%4.4x-%4.4x", vid, pid);
}
fw_name = kmalloc(BCM_FW_NAME_COUNT_MAX * BCM_FW_NAME_LEN, GFP_KERNEL);
if (!fw_name)
return -ENOMEM;
if (hw_name) {
if (board_name) {
snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
"brcm/%s%s.%s.hcd", hw_name, postfix, board_name);
fw_name_count++;
}
snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
"brcm/%s%s.hcd", hw_name, postfix);
fw_name_count++;
}
if (board_name) {
snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
"brcm/BCM%s.%s.hcd", postfix, board_name);
fw_name_count++;
}
snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
"brcm/BCM%s.hcd", postfix);
fw_name_count++;
for (i = 0; i < fw_name_count; i++) {
err = firmware_request_nowarn(&fw, fw_name[i], &hdev->dev);
if (err == 0) {
bt_dev_info(hdev, "%s '%s' Patch",
hw_name ? hw_name : "BCM", fw_name[i]);
*fw_load_done = true;
break;
}
}
if (*fw_load_done) {
err = btbcm_patchram(hdev, fw);
if (err)
bt_dev_info(hdev, "BCM: Patch failed (%d)", err);
release_firmware(fw);
} else {
bt_dev_err(hdev, "BCM: firmware Patch file not found, tried:");
for (i = 0; i < fw_name_count; i++)
bt_dev_err(hdev, "BCM: '%s'", fw_name[i]);
}
kfree(fw_name);
return 0;
}
EXPORT_SYMBOL_GPL(btbcm_initialize);
int btbcm_finalize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode)
{
int err;
/* Re-initialize if necessary */
if (*fw_load_done) {
err = btbcm_initialize(hdev, fw_load_done, use_autobaud_mode);
if (err)
return err;
}
btbcm_check_bdaddr(hdev);
set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
return 0;
}
EXPORT_SYMBOL_GPL(btbcm_finalize);
int btbcm_setup_patchram(struct hci_dev *hdev)
{
bool fw_load_done = false;
bool use_autobaud_mode = false;
int err;
/* Initialize */
err = btbcm_initialize(hdev, &fw_load_done, use_autobaud_mode);
if (err)
return err;
/* Re-initialize after loading Patch */
return btbcm_finalize(hdev, &fw_load_done, use_autobaud_mode);
}
EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
int btbcm_setup_apple(struct hci_dev *hdev)
{
struct sk_buff *skb;
int err;
/* Reset */
err = btbcm_reset(hdev);
if (err)
return err;
/* Read Verbose Config Version Info */
skb = btbcm_read_verbose_config(hdev);
if (!IS_ERR(skb)) {
bt_dev_info(hdev, "BCM: chip id %u build %4.4u",
skb->data[1], get_unaligned_le16(skb->data + 5));
kfree_skb(skb);
}
/* Read USB Product Info */
skb = btbcm_read_usb_product(hdev);
if (!IS_ERR(skb)) {
bt_dev_info(hdev, "BCM: product %4.4x:%4.4x",
get_unaligned_le16(skb->data + 1),
get_unaligned_le16(skb->data + 3));
kfree_skb(skb);
}
/* Read Controller Features */
skb = btbcm_read_controller_features(hdev);
if (!IS_ERR(skb)) {
bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
kfree_skb(skb);
}
/* Read Local Name */
skb = btbcm_read_local_name(hdev);
if (!IS_ERR(skb)) {
bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
kfree_skb(skb);
}
set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
return 0;
}
EXPORT_SYMBOL_GPL(btbcm_setup_apple);
MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
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