xref: /src/sys/arch/arm/xscale/ixp425reg.h

/*	$NetBSD: ixp425reg.h,v 1.13 2003/10/23 09:29:36 scw Exp $ */
/*
 * Copyright (c) 2003
 *	Ichiro FUKUHARA <ichiro (at) ichiro.org>.
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Ichiro FUKUHARA.
 * 4. The name of the company nor the name of the author may be used to
 *    endorse or promote products derived from this software without specific
 *    prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``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 ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD 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.
 */

#ifndef _IXP425REG_H_
#define _IXP425REG_H_

/*
 * Physical memory map for the Intel IXP425
 */
/*
 * CC00 00FF ---------------------------
 *           SDRAM Configuration Registers
 * CC00 0000 ---------------------------
 *
 * C800 BFFF ---------------------------
 *           System and Peripheral Registers
 * C800 0000 ---------------------------
 *           Expansion Bus Configuration Registers
 * C400 0000 ---------------------------
 *           PCI Configuration and Status Registers
 * C000 0000 ---------------------------
 *
 * 6400 0000 ---------------------------
 *           Queue manager
 * 6000 0000 ---------------------------
 *           Expansion Bus Data
 * 5000 0000 ---------------------------
 *           PCI Data
 * 4800 0000 ---------------------------
 *
 * 4000 0000 ---------------------------
 *           SDRAM
 * 1000 0000 ---------------------------
 */

/*
 * Virtual memory map for the Intel IXP425 integrated devices
 */
/*
 * FFFF FFFF ---------------------------
 *
 * F001 2000 ---------------------------
 *           PCI Configuration and Status Registers
 * F001 1000 ---------------------------
 *           Expansion bus Configuration Registers
 * F001 0000 ---------------------------
 *           System and Peripheral Registers
 *            VA F000 0000 = PA C800 0000 (SIZE 0x10000)
 * F000 0000 ---------------------------
 *
 * 0000 0000 ---------------------------
 *
 */

/* Physical/Virtual address for I/O space */

#define	IXP425_IO_VBASE		0xf0000000UL
#define	IXP425_IO_HWBASE	0xc8000000UL
#define	IXP425_IO_SIZE		0x00010000UL

/* Offset */

#define	IXP425_UART0_OFFSET	0x00000000UL
#define	IXP425_UART1_OFFSET	0x00001000UL
#define	IXP425_PMC_OFFSET	0x00002000UL
#define	IXP425_INTR_OFFSET	0x00003000UL
#define	IXP425_GPIO_OFFSET	0x00004000UL
#define	IXP425_TIMER_OFFSET	0x00005000UL
#define	IXP425_HSS_OFFSET	0x00006000UL	/* Not User Programmable */
#define	IXP425_NPE_A_OFFSET	0x00007000UL	/* Not User Programmable */
#define	IXP425_NPE_B_OFFSET	0x00008000UL	/* Not User Programmable */
#define	IXP425_MAC_A_OFFSET	0x00009000UL
#define	IXP425_MAC_B_OFFSET	0x0000a000UL
#define	IXP425_USB_OFFSET	0x0000b000UL

#define	IXP425_REG_SIZE		0x1000

/*
 * UART
 * 	UART0 0xc8000000
 * 	UART1 0xc8001000
 *
 */
/* I/O space */
#define	IXP425_UART0_HWBASE	(IXP425_IO_HWBASE + IXP425_UART0_OFFSET)
#define	IXP425_UART1_HWBASE	(IXP425_IO_HWBASE + IXP425_UART1_OFFSET)

#define	IXP425_UART0_VBASE	(IXP425_IO_VBASE + IXP425_UART0_OFFSET)
						/* 0xf0000000 */
#define	IXP425_UART1_VBASE	(IXP425_IO_VBASE + IXP425_UART1_OFFSET)
						/* 0xf0001000 */

#define	IXP425_UART_FREQ	14745600

/*#define	IXP4XX_COM_NPORTS	8*/

/*
 * Timers
 *
 */
#define	IXP425_TIMER_HWBASE	(IXP425_IO_HWBASE + IXP425_TIMER_OFFSET)

#define	IXP425_OST_TIM0		0x0004
#define	IXP425_OST_TIM1		0x000C

#define	IXP425_OST_TIM0_RELOAD	0x0008
#define	IXP425_OST_TIM1_RELOAD	0x0010
#define	TIMERRELOAD_MASK	0xFFFFFFFC
#define	OST_ONESHOT_EN		(1U << 1)
#define	OST_TIMER_EN		(1U << 0)

#define	IXP425_OST_STATUS	0x0020
#define	OST_WARM_RESET		(1U << 4)
#define	OST_WDOG_INT		(1U << 3)
#define	OST_TS_INT		(1U << 2)
#define	OST_TIM1_INT		(1U << 1)
#define	OST_TIM0_INT		(1U << 0)

#define	IXP425_OST_WDOG		0x0014
#define	IXP425_OST_WDOG_ENAB	0x0018
#define	IXP425_OST_WDOG_KEY	0x001c
#define	OST_WDOG_KEY_MAJICK	0x482e
#define	OST_WDOG_ENAB_RST_ENA	(1u << 0)
#define	OST_WDOG_ENAB_INT_ENA	(1u << 1)
#define	OST_WDOG_ENAB_CNT_ENA	(1u << 2)

/*
 * Interrupt Controller Unit.
 *  PA 0xc8003000
 */

#define	IXP425_IRQ_HWBASE	IXP425_IO_HWBASE + IXP425_INTR_OFFSET
#define	IXP425_IRQ_VBASE	IXP425_IO_VBASE  + IXP425_INTR_OFFSET
						/* 0xf0003000 */
#define	IXP425_IRQ_SIZE		0x00000020UL

#define	IXP425_INT_STATUS	(IXP425_IRQ_VBASE + 0x00)
#define	IXP425_INT_ENABLE	(IXP425_IRQ_VBASE + 0x04)
#define	IXP425_INT_SELECT	(IXP425_IRQ_VBASE + 0x08)
#define	IXP425_IRQ_STATUS	(IXP425_IRQ_VBASE + 0x0C)
#define	IXP425_FIQ_STATUS	(IXP425_IRQ_VBASE + 0x10)
#define	IXP425_INT_PRTY		(IXP425_IRQ_VBASE + 0x14)
#define	IXP425_IRQ_ENC		(IXP425_IRQ_VBASE + 0x18)
#define	IXP425_FIQ_ENC		(IXP425_IRQ_VBASE + 0x1C)

#define	IXP425_INT_SW1		31	/* SW Interrupt 1 */
#define	IXP425_INT_SW0		30	/* SW Interrupt 0 */
#define	IXP425_INT_GPIO_12	29	/* GPIO 12 */
#define	IXP425_INT_GPIO_11	28	/* GPIO 11 */
#define	IXP425_INT_GPIO_10	27	/* GPIO 11 */
#define	IXP425_INT_GPIO_9	26	/* GPIO 9 */
#define	IXP425_INT_GPIO_8	25	/* GPIO 8 */
#define	IXP425_INT_GPIO_7	24	/* GPIO 7 */
#define	IXP425_INT_GPIO_6	23	/* GPIO 6 */
#define	IXP425_INT_GPIO_5	22	/* GPIO 5 */
#define	IXP425_INT_GPIO_4	21	/* GPIO 4 */
#define	IXP425_INT_GPIO_3	20	/* GPIO 3 */
#define	IXP425_INT_GPIO_2	19	/* GPIO 2 */
#define	IXP425_INT_XSCALE_PMU	18	/* XScale PMU */
#define	IXP425_INT_AHB_PMU	17	/* AHB PMU */
#define	IXP425_INT_WDOG		16	/* Watchdog Timer */
#define	IXP425_INT_UART0	15	/* HighSpeed UART */
#define	IXP425_INT_STAMP	14	/* Timestamp Timer */
#define	IXP425_INT_UART1	13	/* Console UART */
#define	IXP425_INT_USB		12	/* USB */
#define	IXP425_INT_TMR1		11	/* General-Purpose Timer1 */
#define	IXP425_INT_PCIDMA2	10	/* PCI DMA Channel 2 */
#define	IXP425_INT_PCIDMA1	 9	/* PCI DMA Channel 1 */
#define	IXP425_INT_PCIINT	 8	/* PCI Interrupt */
#define	IXP425_INT_GPIO_1	 7	/* GPIO 1 */
#define	IXP425_INT_GPIO_0	 6	/* GPIO 0 */
#define	IXP425_INT_TMR0		 5	/* General-Purpose Timer0 */
#define	IXP425_INT_QUE33_64	 4	/* Queue Manager 33-64 */
#define	IXP425_INT_QUE1_32	 3	/* Queue Manager  1-32 */
#define	IXP425_INT_NPE_B	 2	/* Ethernet NPE B */
#define	IXP425_INT_NPE_A	 1	/* Ethernet NPE A */
#define	IXP425_INT_HSS		 0	/* WAN/HSS NPE */

/*
 * software interrupt
 */
#define	IXP425_INT_bit31	31
#define	IXP425_INT_bit30	30
#define	IXP425_INT_bit29	29
#define	IXP425_INT_bit22	22

#define	IXP425_INT_HWMASK	(0xffffffff & \
					~((1 << IXP425_INT_bit31) | \
					  (1 << IXP425_INT_bit30) | \
					  (1 << IXP425_INT_bit29) | \
					  (1 << IXP425_INT_bit22)))
#define	IXP425_INT_GPIOMASK	(0x3ff800c0u)

/*
 * GPIO
 */
#define	IXP425_GPIO_HWBASE	IXP425_IO_HWBASE + IXP425_GPIO_OFFSET
#define IXP425_GPIO_VBASE	IXP425_IO_VBASE  + IXP425_GPIO_OFFSET
					/* 0xf0004000 */
#define IXP425_GPIO_SIZE	0x00000020UL

#define	IXP425_GPIO_GPOUTR	0x00
#define	IXP425_GPIO_GPOER	0x04
#define	IXP425_GPIO_GPINR	0x08
#define	IXP425_GPIO_GPISR	0x0c
#define	IXP425_GPIO_GPIT1R	0x10
#define	IXP425_GPIO_GPIT2R	0x14
#define	IXP425_GPIO_GPCLKR	0x18
# define GPCLKR_MUX14	(1U << 8)
# define GPCLKR_CLK0TC_SHIFT	4
# define GPCLKR_CLK0DC_SHIFT	0

/* GPIO Output */
#define	GPOUT_ON		0x1
#define	GPOUT_OFF		0x0

/* GPIO direction */
#define	GPOER_INPUT		0x1
#define	GPOER_OUTPUT		0x0

/* GPIO Type bits */
#define	GPIO_TYPE_ACT_HIGH	0x0
#define	GPIO_TYPE_ACT_LOW	0x1
#define	GPIO_TYPE_EDG_RISING	0x2
#define	GPIO_TYPE_EDG_FALLING	0x3
#define	GPIO_TYPE_TRANSITIONAL	0x4
#define	GPIO_TYPE_MASK		0x7
#define	GPIO_TYPE(b,v)		((v) << (((b) & 0x7) * 3))
#define	GPIO_TYPE_REG(b)	(((b)&8)?IXP425_GPIO_GPIT2R:IXP425_GPIO_GPIT1R)

/*
 * Expansion Bus
 */
#define	IXP425_EXP_HWBASE	0xc4000000UL
#define	IXP425_EXP_VBASE	(IXP425_IO_VBASE + IXP425_IO_SIZE)
						/* 0xf0010000 */
#define	IXP425_EXP_SIZE		IXP425_REG_SIZE	/* 0x1000 */

/* offset */
#define	EXP_TIMING_CS0_OFFSET		0x0000
#define	EXP_TIMING_CS1_OFFSET		0x0004
#define	EXP_TIMING_CS2_OFFSET		0x0008
#define	EXP_TIMING_CS3_OFFSET		0x000c
#define	EXP_TIMING_CS4_OFFSET		0x0010
#define	EXP_TIMING_CS5_OFFSET		0x0014
#define	EXP_TIMING_CS6_OFFSET		0x0018
#define	EXP_TIMING_CS7_OFFSET		0x001c
#define EXP_CNFG0_OFFSET		0x0020
#define EXP_CNFG1_OFFSET		0x0024

#define IXP425_EXP_RECOVERY_SHIFT	16
#define IXP425_EXP_HOLD_SHIFT		20
#define IXP425_EXP_STROBE_SHIFT		22
#define IXP425_EXP_SETUP_SHIFT		26
#define IXP425_EXP_ADDR_SHIFT		28
#define IXP425_EXP_CS_EN		(1U << 31)

#define IXP425_EXP_RECOVERY_T(x)	(((x) & 15) << IXP425_EXP_RECOVERY_SHIFT)
#define IXP425_EXP_HOLD_T(x)		(((x) & 3)  << IXP425_EXP_HOLD_SHIFT)
#define IXP425_EXP_STROBE_T(x)		(((x) & 15) << IXP425_EXP_STROBE_SHIFT)
#define IXP425_EXP_SETUP_T(x)		(((x) & 3)  << IXP425_EXP_SETUP_SHIFT)
#define IXP425_EXP_ADDR_T(x)		(((x) & 3)  << IXP425_EXP_ADDR_SHIFT)

// EXP_CSn bits
#define EXP_BYTE_EN                (1 << 0)
#define EXP_WR_EN                  (1 << 1)
#define EXP_SPLT_EN                (1 << 3)
#define EXP_MUX_EN                 (1 << 4)
#define EXP_HRDY_POL               (1 << 5)
#define EXP_BYTE_RD16              (1 << 6)
#define EXP_SZ_512                 (0 << 10)
#define EXP_SZ_1K                  (1 << 10)
#define EXP_SZ_2K                  (2 << 10)
#define EXP_SZ_4K                  (3 << 10)
#define EXP_SZ_8K                  (4 << 10)
#define EXP_SZ_16K                 (5 << 10)
#define EXP_SZ_32K                 (6 << 10)
#define EXP_SZ_64K                 (7 << 10)
#define EXP_SZ_128K                (8 << 10)
#define EXP_SZ_256K                (9 << 10)
#define EXP_SZ_512K                (10 << 10)
#define EXP_SZ_1M                  (11 << 10)
#define EXP_SZ_2M                  (12 << 10)
#define EXP_SZ_4M                  (13 << 10)
#define EXP_SZ_8M                  (14 << 10)
#define EXP_SZ_16M                 (15 << 10)
#define EXP_CYC_INTEL              (0 << 14)
#define EXP_CYC_MOTO               (1 << 14)
#define EXP_CYC_HPI                (2 << 14)

// EXP_CNFG0 bits
#define EXP_CNFG0_8BIT             (1 << 0)
#define EXP_CNFG0_PCI_HOST         (1 << 1)
#define EXP_CNFG0_PCI_ARB          (1 << 2)
#define EXP_CNFG0_PCI_66MHZ        (1 << 4)
#define EXP_CNFG0_MEM_MAP          (1 << 31)

// EXP_CNFG1 bits
#define EXP_CNFG1_SW_INT0          (1 << 0)
#define EXP_CNFG1_SW_INT1          (1 << 1)

/*
 * PCI
 */
#define IXP425_PCI_HWBASE	0xc0000000
#define IXP425_PCI_VBASE	(IXP425_EXP_VBASE + IXP425_EXP_SIZE)
							/* 0xf0011000 */
#define	IXP425_PCI_SIZE		IXP425_REG_SIZE		/* 0x1000 */

/*
 * Mapping registers of IXP425 PCI Configuration
 */
/* PCI_ID_REG			0x00 */
/* PCI_COMMAND_STATUS_REG	0x04 */
/* PCI_CLASS_REG		0x08 */
/* PCI_BHLC_REG			0x0c */
#define	PCI_MAPREG_BAR0		0x10	/* Base Address 0 */
#define	PCI_MAPREG_BAR1		0x14	/* Base Address 1 */
#define	PCI_MAPREG_BAR2		0x18	/* Base Address 2 */
#define	PCI_MAPREG_BAR3		0x1c	/* Base Address 3 */
#define	PCI_MAPREG_BAR4		0x20	/* Base Address 4 */
#define	PCI_MAPREG_BAR5		0x24	/* Base Address 5 */
/* PCI_SUBSYS_ID_REG		0x2c */
/* PCI_INTERRUPT_REG		0x3c */
#define	PCI_RTOTTO		0x40

/* PCI Controller CSR Base Address */
#define	IXP425_PCI_CSR_BASE	IXP425_PCI_VBASE

/* PCI Memory Space */
#define	IXP425_PCI_MEM_HWBASE	0x48000000UL	/* VA == PA */
#define	IXP425_PCI_MEM_VBASE	IXP425_PCI_MEM_HWBASE
#define	IXP425_PCI_MEM_SIZE	0x04000000UL	/* 64MB */

/* PCI I/O Space */
#define	IXP425_PCI_IO_HWBASE	0x00000000UL
#define	IXP425_PCI_IO_SIZE	0x00100000UL    /* 1Mbyte */

/* PCI Controller Configuration Offset */
#define	PCI_NP_AD		0x00
#define	PCI_NP_CBE		0x04
# define NP_CBE_SHIFT		4
#define	PCI_NP_WDATA		0x08
#define	PCI_NP_RDATA		0x0c
#define	PCI_CRP_AD_CBE		0x10
#define	PCI_CRP_AD_WDATA	0x14
#define	PCI_CRP_AD_RDATA	0x18
#define	PCI_CSR			0x1c
# define CSR_PRST		(1U << 16)
# define CSR_IC			(1U << 15)
# define CSR_ABE		(1U << 4)
# define CSR_PDS		(1U << 3)
# define CSR_ADS		(1U << 2)
# define CSR_HOST		(1U << 0)
#define	PCI_ISR			0x20
# define ISR_AHBE		(1U << 3)
# define ISR_PPE		(1U << 2)
# define ISR_PFE		(1U << 1)
# define ISR_PSE		(1U << 0)
#define	PCI_INTEN		0x24
#define	PCI_DMACTRL		0x28
#define	PCI_AHBMEMBASE		0x2c
#define	PCI_AHBIOBASE		0x30
#define	PCI_PCIMEMBASE		0x34
#define	PCI_AHBDOORBELL		0x38
#define	PCI_PCIDOORBELL		0x3c
#define	PCI_ATPDMA0_AHBADDR	0x40
#define	PCI_ATPDMA0_PCIADDR	0x44
#define	PCI_ATPDMA0_LENGTH	0x48
#define	PCI_ATPDMA1_AHBADDR	0x4c
#define	PCI_ATPDMA1_PCIADDR	0x50
#define	PCI_ATPDMA1_LENGTH	0x54
#define	PCI_PTADMA0_AHBADDR	0x58
#define	PCI_PTADMA0_PCIADDR	0x5c
#define	PCI_PTADMA0_LENGTH	0x60
#define	PCI_PTADMA1_AHBADDR	0x64
#define	PCI_PTADMA1_PCIADDR	0x68
#define	PCI_PTADMA1_LENGTH	0x6c

/* PCI target(T)/initiator(I) Interface Commands for PCI_NP_CBE register */
#define	COMMAND_NP_IA		0x0	/* Interrupt Acknowledge   (I)*/
#define	COMMAND_NP_SC		0x1	/* Special Cycle	   (I)*/
#define	COMMAND_NP_IO_READ	0x2	/* I/O Read		(T)(I) */
#define	COMMAND_NP_IO_WRITE	0x3	/* I/O Write		(T)(I) */
#define	COMMAND_NP_MEM_READ	0x6	/* Memory Read		(T)(I) */
#define	COMMAND_NP_MEM_WRITE	0x7	/* Memory Write		(T)(I) */
#define	COMMAND_NP_CONF_READ	0xa	/* Configuration Read	(T)(I) */
#define	COMMAND_NP_CONF_WRITE	0xb	/* Configuration Write	(T)(I) */

/* PCI byte enables */
#define	BE_8BIT(a)		((0x10u << ((a) & 0x03)) ^ 0xf0)
#define	BE_16BIT(a)		((0x30u << ((a) & 0x02)) ^ 0xf0)
#define	BE_32BIT(a)		0x00

/* PCI byte selects */
#define	READ_8BIT(v,a)		((u_int8_t)((v) >> (((a) & 3) * 8)))
#define	READ_16BIT(v,a)		((u_int16_t)((v) >> (((a) & 2) * 8)))
#define	WRITE_8BIT(v,a)		(((u_int32_t)(v)) << (((a) & 3) * 8))
#define	WRITE_16BIT(v,a)	(((u_int32_t)(v)) << (((a) & 2) * 8))

/* PCI Controller Configuration Commands for PCI_CRP_AD_CBE */
#define COMMAND_CRP_READ	0x00
#define COMMAND_CRP_WRITE	(1U << 16)

/*
 * SDRAM Configuration Register
 */
#define	IXP425_MCU_HWBASE	0xcc000000UL
#define	MCU_SDR_CONFIG		0x00
#define	MCU_SDR_REFRESH		0x04
#define	MCU_SDR_IR		0x08

/*
 * Performance Monitoring Unit          (CP14)
 *
 *      CP14.0.1	Performance Monitor Control Register(PMNC)
 *      CP14.1.1	Clock Counter(CCNT)
 *      CP14.4.1	Interrupt Enable Register(INTEN)
 *      CP14.5.1	Overflow Flag Register(FLAG)
 *      CP14.8.1	Event Selection Register(EVTSEL)
 *      CP14.0.2	Performance Counter Register 0(PMN0)
 *      CP14.1.2	Performance Counter Register 0(PMN1)
 *      CP14.2.2	Performance Counter Register 0(PMN2)
 *      CP14.3.2	Performance Counter Register 0(PMN3)
 */

#define	PMNC_E		0x00000001	/* enable all counters */
#define	PMNC_P		0x00000002	/* reset all PMNs to 0 */
#define	PMNC_C		0x00000004	/* clock counter reset */
#define	PMNC_D		0x00000008	/* clock counter / 64 */

#define INTEN_CC_IE	0x00000001	/* enable clock counter interrupt */
#define	INTEN_PMN0_IE	0x00000002	/* enable PMN0 interrupt */
#define	INTEN_PMN1_IE	0x00000004	/* enable PMN1 interrupt */
#define	INTEN_PMN2_IE	0x00000008	/* enable PMN2 interrupt */
#define	INTEN_PMN3_IE	0x00000010	/* enable PMN3 interrupt */

#define	FLAG_CC_IF	0x00000001	/* clock counter overflow */
#define	FLAG_PMN0_IF	0x00000002	/* PMN0 overflow */
#define	FLAG_PMN1_IF	0x00000004	/* PMN1 overflow */
#define	FLAG_PMN2_IF	0x00000008	/* PMN2 overflow */
#define	FLAG_PMN3_IF	0x00000010	/* PMN3 overflow */

#define EVTSEL_EVCNT_MASK 0x0000000ff	/* event to count for PMNs */
#define PMNC_EVCNT0_SHIFT 0
#define PMNC_EVCNT1_SHIFT 8
#define PMNC_EVCNT2_SHIFT 16
#define PMNC_EVCNT3_SHIFT 24

#endif /* _IXP425REG_H_ */