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freebsd/sys/mips/rmi/board.c
Jayachandran C. 3ba09158c8 I2C drivers for XLR/XLS processors. 
- Major update to xlr_i2c.c: do multi-byte ops correctly, remove unnecessary
  code, add mutex to protect bus operations, style(9) fixes.
- Drivers for I2C devices on XLR/XLS engineering boards, ds1374u RTC, max6657
  temparature sensor and at24co2n EEPROM.

Submitted by:	Sreekanth M. S. (kanthms at netlogicmicro com)
2010-12-12 06:00:26 +00:00

594 lines
18 KiB
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/*********************************************************************
*
* Copyright 2003-2006 Raza Microelectronics, Inc. (RMI). All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY Raza Microelectronics, Inc. ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RMI OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES, LOSS OF USE, DATA, OR PROFITS, OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*
* *****************************RMI_2**********************************/
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <machine/cpufunc.h>
#include <mips/rmi/msgring.h>
#include <mips/rmi/rmi_boot_info.h>
#include <mips/rmi/board.h>
#include <mips/rmi/pic.h>
#define XLR_I2C_RTC_ADDR 0xd0
#define XLR_I2C_EEPROM_ADDR 0xa0
#define XLR_I2C_TEMPSENSOR_ADDR 0x98
#define XLR_I2C_ATX8_TEMPSENSOR_ADDR 0x9a
struct stn_cc *xlr_core_cc_configs[] = { &cc_table_cpu_0, &cc_table_cpu_1,
&cc_table_cpu_2, &cc_table_cpu_3, &cc_table_cpu_4, &cc_table_cpu_5,
&cc_table_cpu_6, &cc_table_cpu_7};
struct stn_cc *xls_core_cc_configs[] = { &xls_cc_table_cpu_0, &xls_cc_table_cpu_1,
&xls_cc_table_cpu_2, &xls_cc_table_cpu_3 };
struct xlr_board_info xlr_board_info;
static int
xlr_pcmcia_present(void)
{
xlr_reg_t *mmio = xlr_io_mmio(XLR_IO_GPIO_OFFSET);
uint32_t resetconf;
resetconf = xlr_read_reg(mmio, 21);
return ((resetconf & 0x4000) != 0);
}
static void
xlr_chip_specific_overrides(struct xlr_board_info* board)
{
struct xlr_gmac_block_t *blk0, *blk1, *blk2;
uint32_t chipid;
uint32_t revision;
blk0 = &board->gmac_block[0];
blk1 = &board->gmac_block[1];
blk2 = &board->gmac_block[2];
chipid = xlr_processor_id();
revision = xlr_revision();
if (revision == 0x04) { /* B2 */
switch (chipid) {
case 0x07: /* XLR 508 */
case 0x08: /* XLR 516 */
case 0x09: /* XLR 532 */
/* NA[12] not available */
memset(blk1, 0, sizeof(*blk1));
memset(blk2, 0, sizeof(*blk2));
break;
case 0x06: /* XLR 308 */
/* NA0 has 3 ports */
blk0->gmac_port[3].valid = 0;
blk0->num_ports--;
/* NA[12] not available */
memset(blk1, 0, sizeof(*blk1));
memset(blk2, 0, sizeof(*blk2));
break;
default:
break;
}
} else if (revision == 0x91) { /* C4 */
switch (chipid) {
case 0x0B: /* XLR 508 */
case 0x0A: /* XLR 516 */
case 0x08: /* XLR 532 */
/* NA[12] not available */
memset(blk1, 0, sizeof(*blk1));
memset(blk2, 0, sizeof(*blk2));
break;
case 0x0F: /* XLR 308 */
/* NA0 has 3 ports */
blk0->gmac_port[3].valid = 0;
blk0->num_ports--;
/* NA[12] not available */
memset(blk1, 0, sizeof(*blk1));
memset(blk2, 0, sizeof(*blk2));
break;
default:
break;
}
} else { /* other pre-production silicon */
switch (chipid) {
/* XLR 5xx */
case 0x0B:
case 0x0A:
case 0x07:
case 0x08:
case 0x09:
/* NA[12] not available */
memset(blk1, 0, sizeof(*blk1));
memset(blk2, 0, sizeof(*blk2));
break;
/* XLR 3xx */
case 0x0F:
case 0x06:
/* NA0 has 3 ports */
blk0->gmac_port[3].valid = 0;
blk0->num_ports--;
/* NA[12] not available */
memset(blk1, 0, sizeof(*blk1));
memset(blk2, 0, sizeof(*blk2));
break;
default:
break;
}
}
}
static void
xlr_board_specific_overrides(struct xlr_board_info* board)
{
struct xlr_gmac_block_t *blk1, *blk2;
blk1 = &board->gmac_block[1];
blk2 = &board->gmac_block[2];
switch (xlr_boot1_info.board_major_version) {
case RMI_XLR_BOARD_ARIZONA_I:
/* ATX-I has SPI-4, not XGMAC */
blk1->type = XLR_SPI4;
blk1->enabled = 0; /* nlge does not
support SPI-4 */
blk2->type = XLR_SPI4;
blk2->enabled = 0;
break;
case RMI_XLR_BOARD_ARIZONA_II:
/* XGMII_A --> VSC7281, XGMII_B --> VSC7281 */
blk1->enabled = 1;
blk1->num_ports = 1;
blk1->gmac_port[0].valid = 1;
blk2->enabled = 1;
blk2->num_ports = 1;
blk2->gmac_port[0].valid = 1;
default:
break;
}
}
static int
quad0_xaui(void)
{
xlr_reg_t *gpio_mmio =
(unsigned int *)(DEFAULT_XLR_IO_BASE + XLR_IO_GPIO_OFFSET);
uint32_t bit24;
bit24 = (xlr_read_reg(gpio_mmio, 0x15) >> 24) & 0x1;
return (bit24);
}
static int
quad1_xaui(void)
{
xlr_reg_t *gpio_mmio =
(unsigned int *)(DEFAULT_XLR_IO_BASE + XLR_IO_GPIO_OFFSET);
uint32_t bit25;
bit25 = (xlr_read_reg(gpio_mmio, 0x15) >> 25) & 0x1;
return (bit25);
}
static void
xls_chip_specific_overrides(struct xlr_board_info* board)
{
struct xlr_gmac_block_t *blk0, *blk1;
uint32_t chipid;
blk0 = &board->gmac_block[0];
blk1 = &board->gmac_block[1];
chipid = xlr_processor_id();
switch (chipid) {
case 0x8E: /* XLS208 */
case 0x8F: /* XLS204 */
/* NA1 is not available */
memset(blk1, 0, sizeof(*blk1));
break;
case 0xCE: /* XLS108 */
case 0xCF: /* XLS104 */
/* NA0 has 3 ports */
blk0->gmac_port[3].valid = 0;
blk0->num_ports--;
/* NA1 is not available */
memset(blk1, 0, sizeof(*blk1));
break;
default:
break;
}
}
static void
xls_board_specific_overrides(struct xlr_board_info* board)
{
struct xlr_gmac_block_t *blk0, *blk1;
int i;
struct xlr_i2c_dev_t* iic_blk;
blk0 = &board->gmac_block[0];
blk1 = &board->gmac_block[1];
switch (xlr_boot1_info.board_major_version) {
case RMI_XLR_BOARD_ARIZONA_VI:
blk0->mode = XLR_PORT0_RGMII;
blk0->gmac_port[0].type = XLR_RGMII;
blk0->gmac_port[0].phy_addr = 0;
blk0->gmac_port[0].mii_addr = XLR_IO_GMAC_4_OFFSET;
/* Because of the Octal PHY, SGMII Quad1 is MII is also bound
* to the PHY attached to SGMII0_MDC/MDIO/MDINT. */
for (i = 0; i < 4; i++) {
blk1->gmac_port[i].mii_addr = XLR_IO_GMAC_0_OFFSET;
blk1->gmac_port[i].serdes_addr = XLR_IO_GMAC_0_OFFSET;
}
blk1->gmac_port[1].mii_addr = XLR_IO_GMAC_0_OFFSET;
blk1->gmac_port[2].mii_addr = XLR_IO_GMAC_0_OFFSET;
blk1->gmac_port[3].mii_addr = XLR_IO_GMAC_0_OFFSET;
blk1->gmac_port[1].serdes_addr = XLR_IO_GMAC_0_OFFSET;
blk1->gmac_port[2].serdes_addr = XLR_IO_GMAC_0_OFFSET;
blk1->gmac_port[3].serdes_addr = XLR_IO_GMAC_0_OFFSET;
/* RGMII MDIO interrupt is thru NA1 and SGMII MDIO
* interrupts for ports in blk1 are from NA0 */
blk0->gmac_port[0].mdint_id = 1;
blk1->gmac_port[0].mdint_id = 0;
blk1->gmac_port[1].mdint_id = 0;
blk1->gmac_port[2].mdint_id = 0;
blk1->gmac_port[3].mdint_id = 0;
/* If we have a 4xx lite chip, don't enable the
* GMACs which are disabled in hardware */
if (xlr_is_xls4xx_lite()) {
xlr_reg_t *mmio = xlr_io_mmio(XLR_IO_GPIO_OFFSET);
uint32_t tmp;
/* Port 6 & 7 are not enabled on the condor 4xx, figure
* this out from the GPIO fuse bank */
tmp = xlr_read_reg(mmio, 35);
if ((tmp & (3 << 28)) != 0) {
blk1->enabled = 0x3;
blk1->gmac_port[2].valid = 0;
blk1->gmac_port[3].valid = 0;
blk1->num_ports = 2;
}
}
break;
case RMI_XLR_BOARD_ARIZONA_VIII:
iic_blk = &xlr_board_info.xlr_i2c_device[I2C_THERMAL];
if (iic_blk->enabled) {
iic_blk->addr = XLR_I2C_ATX8_TEMPSENSOR_ADDR;
}
if (blk1->enabled) {
/* There is just one Octal PHY on the board and it is
* connected to the MII interface for NA Quad 0. */
for (i = 0; i < 4; i++) {
blk1->gmac_port[i].mii_addr =
XLR_IO_GMAC_0_OFFSET;
blk1->gmac_port[i].mdint_id = 0;
}
}
break;
case RMI_XLR_BOARD_ARIZONA_XI:
case RMI_XLR_BOARD_ARIZONA_XII:
if (quad0_xaui()) { /* GMAC ports 0-3 are set to XAUI */
/* only GMAC0 is active i.e, the 0-th port on this quad.
* Disable all the other 7 possible ports. */
for (i = 1; i < MAX_NA_PORTS; i++) {
memset(&blk0->gmac_port[i], 0,
sizeof(blk0->gmac_port[i]));
}
/* Setup for XAUI on N/w Acc0: gmac0 */
blk0->type = XLR_XGMAC;
blk0->mode = XLR_XAUI;
blk0->num_ports = 1;
blk0->gmac_port[0].type = XLR_XAUI;
blk1->gmac_port[0].phy_addr = 16;
blk0->gmac_port[0].tx_bucket_id = blk0->station_txbase;
/* Other addresses etc need not be modified as XAUI_0
* shares its addresses with SGMII GMAC_0, which was
* set in the caller. */
}
else {
blk0->num_ports = 1; /* only 1 RGMII port */
blk0->mode = XLR_PORT0_RGMII;
blk0->gmac_port[0].type = XLR_RGMII;
blk0->gmac_port[0].phy_addr = 0;
blk0->gmac_port[0].mii_addr = XLR_IO_GMAC_0_OFFSET;
}
if (quad1_xaui()) { /* GMAC ports 4-7 are used for XAUI */
/* only GMAC4 is active i.e, the 0-th port on this quad.
* Disable all the other 7 possible ports. */
for (i = 1; i < MAX_NA_PORTS; i++) {
memset(&blk1->gmac_port[i], 0,
sizeof(blk1->gmac_port[i]));
}
/* Setup for XAUI on N/w Acc1: gmac4 */
blk1->type = XLR_XGMAC;
blk1->mode = XLR_XAUI;
blk1->num_ports = 1;
/* XAUI and SGMII ports share FMN buckets on N/w Acc 1;
so, station_txbase, station_rfr need not be
patched up. */
blk1->gmac_port[0].type = XLR_XAUI;
blk1->gmac_port[0].phy_addr = 16;
blk1->gmac_port[0].tx_bucket_id = blk1->station_txbase;
/* Other addresses etc need not be modified as XAUI_1
* shares its addresses with SGMII GMAC_4, which was
* set in the caller. */
}
break;
default:
break;
}
}
/*
* All our knowledge of chip and board that cannot be detected by probing
* at run-time goes here
*/
int
xlr_board_info_setup()
{
struct xlr_gmac_block_t *blk0, *blk1, *blk2;
struct xlr_i2c_dev_t* iic_blk;
int i;
/* This setup code is long'ish because the same base driver
* (if_nlge.c) is used for different:
* - CPUs (XLR/XLS)
* - boards (for each CPU, multiple board configs are possible
* and available).
*
* At the time of writing, there are atleast 12 boards, 4 with XLR
* and 8 with XLS. This means that the base driver needs to work with
* 12 different configurations, with varying levels of differences.
* To accomodate the different configs, the xlr_board_info struct
* has various attributes for paramters that could be different.
* These attributes are setup here and can be used directly in the
* base driver.
* It was seen that the setup code is not entirely trivial and
* it is possible to organize it in different ways. In the following,
* we choose an approach that sacrifices code-compactness/speed for
* readability. This is because configuration code executes once
* per reboot and hence has a minimal performance impact.
* On the other hand, driver debugging/enhancements require
* that different engineers can quickly comprehend the setup
* sequence. Hence, readability is seen as the key requirement for
* this code. It is for the reader to decide how much of this
* requirement is met with the current code organization !!
*
* The initialization is organized thus:
*
* if (CPU is XLS) {
* // initialize per XLS architecture
* // default inits (per chip spec)
* // chip-specific overrides
* // board-specific overrides
* } else if (CPU is XLR) {
* // initialize per XLR architecture
* // default inits (per chip spec)
* // chip-specific overrides
* // board-specific overrides
* }
*
* For each CPU family, all the default initializations
* are done for a fully-loaded device of that family.
* This configuration is then adjusted for the actual
* chip id. This is followed up with board specific
* overrides.
*/
/* start with a clean slate */
memset(&xlr_board_info, 0, sizeof(xlr_board_info));
xlr_board_info.ata = xlr_pcmcia_present();
blk0 = &xlr_board_info.gmac_block[0];
blk1 = &xlr_board_info.gmac_block[1];
blk2 = &xlr_board_info.gmac_block[2];
iic_blk = xlr_board_info.xlr_i2c_device;
iic_blk[I2C_RTC].enabled = 1;
iic_blk[I2C_RTC].addr = XLR_I2C_RTC_ADDR;
iic_blk[I2C_THERMAL].enabled = 1;
iic_blk[I2C_THERMAL].addr = XLR_I2C_TEMPSENSOR_ADDR;
iic_blk[I2C_EEPROM].enabled = 1;
iic_blk[I2C_EEPROM].addr = XLR_I2C_EEPROM_ADDR;
if (xlr_is_xls()) {
xlr_board_info.is_xls = 1;
xlr_board_info.nr_cpus = 8;
xlr_board_info.usb = 1;
/* Board version 8 has NAND flash */
xlr_board_info.cfi =
(xlr_boot1_info.board_major_version != RMI_XLR_BOARD_ARIZONA_VIII);
xlr_board_info.pci_irq = 0;
xlr_board_info.credit_configs = xls_core_cc_configs;
xlr_board_info.bucket_sizes = &xls_bucket_sizes;
xlr_board_info.gmacports = MAX_NA_PORTS;
/* ---------------- Network Acc 0 ---------------- */
blk0->type = XLR_GMAC;
blk0->enabled = 0xf;
blk0->credit_config = &xls_cc_table_gmac0;
blk0->station_id = MSGRNG_STNID_GMAC;
blk0->station_txbase = MSGRNG_STNID_GMACTX0;
blk0->station_rfr = MSGRNG_STNID_GMACRFR_0;
blk0->mode = XLR_SGMII;
blk0->baseaddr = XLR_IO_GMAC_0_OFFSET;
blk0->baseirq = PIC_GMAC_0_IRQ;
blk0->baseinst = 0;
/* By default, assume SGMII is setup. But this can change based
on board-specific or setting-specific info. */
for (i = 0; i < 4; i++) {
blk0->gmac_port[i].valid = 1;
blk0->gmac_port[i].instance = i + blk0->baseinst;
blk0->gmac_port[i].type = XLR_SGMII;
blk0->gmac_port[i].phy_addr = i + 16;
blk0->gmac_port[i].tx_bucket_id =
blk0->station_txbase + i;
blk0->gmac_port[i].mdint_id = 0;
blk0->num_ports++;
blk0->gmac_port[i].base_addr = XLR_IO_GMAC_0_OFFSET + i * 0x1000;
blk0->gmac_port[i].mii_addr = XLR_IO_GMAC_0_OFFSET;
blk0->gmac_port[i].pcs_addr = XLR_IO_GMAC_0_OFFSET;
blk0->gmac_port[i].serdes_addr = XLR_IO_GMAC_0_OFFSET;
}
/* ---------------- Network Acc 1 ---------------- */
blk1->type = XLR_GMAC;
blk1->enabled = 0xf;
blk1->credit_config = &xls_cc_table_gmac1;
blk1->station_id = MSGRNG_STNID_GMAC1;
blk1->station_txbase = MSGRNG_STNID_GMAC1_TX0;
blk1->station_rfr = MSGRNG_STNID_GMAC1_FR_0;
blk1->mode = XLR_SGMII;
blk1->baseaddr = XLR_IO_GMAC_4_OFFSET;
blk1->baseirq = PIC_XGS_0_IRQ;
blk1->baseinst = 4;
for (i = 0; i < 4; i++) {
blk1->gmac_port[i].valid = 1;
blk1->gmac_port[i].instance = i + blk1->baseinst;
blk1->gmac_port[i].type = XLR_SGMII;
blk1->gmac_port[i].phy_addr = i + 20;
blk1->gmac_port[i].tx_bucket_id =
blk1->station_txbase + i;
blk1->gmac_port[i].mdint_id = 1;
blk1->num_ports++;
blk1->gmac_port[i].base_addr = XLR_IO_GMAC_4_OFFSET + i * 0x1000;
blk1->gmac_port[i].mii_addr = XLR_IO_GMAC_4_OFFSET;
blk1->gmac_port[i].pcs_addr = XLR_IO_GMAC_4_OFFSET;
blk1->gmac_port[i].serdes_addr = XLR_IO_GMAC_0_OFFSET;
}
/* ---------------- Network Acc 2 ---------------- */
xlr_board_info.gmac_block[2].enabled = 0; /* disabled on XLS */
xls_chip_specific_overrides(&xlr_board_info);
xls_board_specific_overrides(&xlr_board_info);
} else { /* XLR */
xlr_board_info.is_xls = 0;
xlr_board_info.nr_cpus = 32;
xlr_board_info.usb = 0;
xlr_board_info.cfi = 1;
xlr_board_info.pci_irq = 0;
xlr_board_info.credit_configs = xlr_core_cc_configs;
xlr_board_info.bucket_sizes = &bucket_sizes;
xlr_board_info.gmacports = 4;
/* ---------------- GMAC0 ---------------- */
blk0->type = XLR_GMAC;
blk0->enabled = 0xf;
blk0->credit_config = &cc_table_gmac;
blk0->station_id = MSGRNG_STNID_GMAC;
blk0->station_txbase = MSGRNG_STNID_GMACTX0;
blk0->station_rfr = MSGRNG_STNID_GMACRFR_0;
blk0->mode = XLR_RGMII;
blk0->baseaddr = XLR_IO_GMAC_0_OFFSET;
blk0->baseirq = PIC_GMAC_0_IRQ;
blk0->baseinst = 0;
/* first, do the common/easy stuff for all the ports */
for (i = 0; i < 4; i++) {
blk0->gmac_port[i].valid = 1;
blk0->gmac_port[i].instance = i + blk0->baseinst;
blk0->gmac_port[i].type = XLR_RGMII;
blk0->gmac_port[i].phy_addr = i;
blk0->gmac_port[i].tx_bucket_id =
blk0->station_txbase + i;
blk0->gmac_port[i].mdint_id = 0;
blk0->gmac_port[i].base_addr = XLR_IO_GMAC_0_OFFSET + i * 0x1000;
blk0->gmac_port[i].mii_addr = XLR_IO_GMAC_0_OFFSET;
/* RGMII ports, no PCS/SERDES */
blk0->num_ports++;
}
/* ---------------- XGMAC0 ---------------- */
blk1->type = XLR_XGMAC;
blk1->mode = XLR_XGMII;
blk1->enabled = 0;
blk1->credit_config = &cc_table_xgs_0;
blk1->station_txbase = MSGRNG_STNID_XGS0_TX;
blk1->station_rfr = MSGRNG_STNID_XMAC0RFR;
blk1->station_id = MSGRNG_STNID_XGS0FR;
blk1->baseaddr = XLR_IO_XGMAC_0_OFFSET;
blk1->baseirq = PIC_XGS_0_IRQ;
blk1->baseinst = 4;
blk1->gmac_port[0].type = XLR_XGMII;
blk1->gmac_port[0].instance = 0;
blk1->gmac_port[0].phy_addr = 0;
blk1->gmac_port[0].base_addr = XLR_IO_XGMAC_0_OFFSET;
blk1->gmac_port[0].mii_addr = XLR_IO_XGMAC_0_OFFSET;
blk1->gmac_port[0].tx_bucket_id = blk1->station_txbase;
blk1->gmac_port[0].mdint_id = 1;
/* ---------------- XGMAC1 ---------------- */
blk2->type = XLR_XGMAC;
blk2->mode = XLR_XGMII;
blk2->enabled = 0;
blk2->credit_config = &cc_table_xgs_1;
blk2->station_txbase = MSGRNG_STNID_XGS1_TX;
blk2->station_rfr = MSGRNG_STNID_XMAC1RFR;
blk2->station_id = MSGRNG_STNID_XGS1FR;
blk2->baseaddr = XLR_IO_XGMAC_1_OFFSET;
blk2->baseirq = PIC_XGS_1_IRQ;
blk2->baseinst = 5;
blk2->gmac_port[0].type = XLR_XGMII;
blk2->gmac_port[0].instance = 0;
blk2->gmac_port[0].phy_addr = 0;
blk2->gmac_port[0].base_addr = XLR_IO_XGMAC_1_OFFSET;
blk2->gmac_port[0].mii_addr = XLR_IO_XGMAC_1_OFFSET;
blk2->gmac_port[0].tx_bucket_id = blk2->station_txbase;
blk2->gmac_port[0].mdint_id = 2;
/* Done with default setup. Now handle chip and board-specific
variations. */
xlr_chip_specific_overrides(&xlr_board_info);
xlr_board_specific_overrides(&xlr_board_info);
}
return 0;
}
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