/* $OpenBSD: rt2661reg.h,v 1.10 2009/08/10 18:13:17 damien Exp $ */ /*- * Copyright (c) 2006 * Damien Bergamini * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #define RT2661_TX_RING_COUNT 32 #define RT2661_MGT_RING_COUNT 32 #define RT2661_RX_RING_COUNT 64 #define RT2661_TX_DESC_SIZE (sizeof (struct rt2661_tx_desc)) #define RT2661_TX_DESC_WSIZE (RT2661_TX_DESC_SIZE / 4) #define RT2661_RX_DESC_SIZE (sizeof (struct rt2661_rx_desc)) #define RT2661_RX_DESC_WSIZE (RT2661_RX_DESC_SIZE / 4) #define RT2661_MAX_SCATTER 5 /* * Control and status registers. */ #define RT2661_HOST_CMD_CSR 0x0008 #define RT2661_MCU_CNTL_CSR 0x000c #define RT2661_SOFT_RESET_CSR 0x0010 #define RT2661_MCU_INT_SOURCE_CSR 0x0014 #define RT2661_MCU_INT_MASK_CSR 0x0018 #define RT2661_PCI_USEC_CSR 0x001c #define RT2661_H2M_MAILBOX_CSR 0x2100 #define RT2661_M2H_CMD_DONE_CSR 0x2104 #define RT2661_HW_BEACON_BASE0 0x2c00 #define RT2661_HW_BEACON_BASE1 0x2d00 #define RT2661_HW_BEACON_BASE2 0x2e00 #define RT2661_HW_BEACON_BASE3 0x2f00 #define RT2661_MAC_CSR0 0x3000 #define RT2661_MAC_CSR1 0x3004 #define RT2661_MAC_CSR2 0x3008 #define RT2661_MAC_CSR3 0x300c #define RT2661_MAC_CSR4 0x3010 #define RT2661_MAC_CSR5 0x3014 #define RT2661_MAC_CSR6 0x3018 #define RT2661_MAC_CSR7 0x301c #define RT2661_MAC_CSR8 0x3020 #define RT2661_MAC_CSR9 0x3024 #define RT2661_MAC_CSR10 0x3028 #define RT2661_MAC_CSR11 0x302c #define RT2661_MAC_CSR12 0x3030 #define RT2661_MAC_CSR13 0x3034 #define RT2661_MAC_CSR14 0x3038 #define RT2661_MAC_CSR15 0x303c #define RT2661_TXRX_CSR0 0x3040 #define RT2661_TXRX_CSR1 0x3044 #define RT2661_TXRX_CSR2 0x3048 #define RT2661_TXRX_CSR3 0x304c #define RT2661_TXRX_CSR4 0x3050 #define RT2661_TXRX_CSR5 0x3054 #define RT2661_TXRX_CSR6 0x3058 #define RT2661_TXRX_CSR7 0x305c #define RT2661_TXRX_CSR8 0x3060 #define RT2661_TXRX_CSR9 0x3064 #define RT2661_TXRX_CSR10 0x3068 #define RT2661_TXRX_CSR11 0x306c #define RT2661_TXRX_CSR12 0x3070 #define RT2661_TXRX_CSR13 0x3074 #define RT2661_TXRX_CSR14 0x3078 #define RT2661_TXRX_CSR15 0x307c #define RT2661_PHY_CSR0 0x3080 #define RT2661_PHY_CSR1 0x3084 #define RT2661_PHY_CSR2 0x3088 #define RT2661_PHY_CSR3 0x308c #define RT2661_PHY_CSR4 0x3090 #define RT2661_PHY_CSR5 0x3094 #define RT2661_PHY_CSR6 0x3098 #define RT2661_PHY_CSR7 0x309c #define RT2661_SEC_CSR0 0x30a0 #define RT2661_SEC_CSR1 0x30a4 #define RT2661_SEC_CSR2 0x30a8 #define RT2661_SEC_CSR3 0x30ac #define RT2661_SEC_CSR4 0x30b0 #define RT2661_SEC_CSR5 0x30b4 #define RT2661_STA_CSR0 0x30c0 #define RT2661_STA_CSR1 0x30c4 #define RT2661_STA_CSR2 0x30c8 #define RT2661_STA_CSR3 0x30cc #define RT2661_STA_CSR4 0x30d0 #define RT2661_AC0_BASE_CSR 0x3400 #define RT2661_AC1_BASE_CSR 0x3404 #define RT2661_AC2_BASE_CSR 0x3408 #define RT2661_AC3_BASE_CSR 0x340c #define RT2661_MGT_BASE_CSR 0x3410 #define RT2661_TX_RING_CSR0 0x3418 #define RT2661_TX_RING_CSR1 0x341c #define RT2661_AIFSN_CSR 0x3420 #define RT2661_CWMIN_CSR 0x3424 #define RT2661_CWMAX_CSR 0x3428 #define RT2661_TX_DMA_DST_CSR 0x342c #define RT2661_TX_CNTL_CSR 0x3430 #define RT2661_LOAD_TX_RING_CSR 0x3434 #define RT2661_RX_BASE_CSR 0x3450 #define RT2661_RX_RING_CSR 0x3454 #define RT2661_RX_CNTL_CSR 0x3458 #define RT2661_PCI_CFG_CSR 0x3460 #define RT2661_INT_SOURCE_CSR 0x3468 #define RT2661_INT_MASK_CSR 0x346c #define RT2661_E2PROM_CSR 0x3470 #define RT2661_AC_TXOP_CSR0 0x3474 #define RT2661_AC_TXOP_CSR1 0x3478 #define RT2661_TEST_MODE_CSR 0x3484 #define RT2661_IO_CNTL_CSR 0x3498 #define RT2661_MCU_CODE_BASE 0x4000 /* possible flags for register HOST_CMD_CSR */ #define RT2661_KICK_CMD (1 << 7) /* Host to MCU (8051) command identifiers */ #define RT2661_MCU_CMD_SLEEP 0x30 #define RT2661_MCU_CMD_WAKEUP 0x31 #define RT2661_MCU_SET_LED 0x50 #define RT2661_MCU_SET_RSSI_LED 0x52 /* possible flags for register MCU_CNTL_CSR */ #define RT2661_MCU_SEL (1 << 0) #define RT2661_MCU_RESET (1 << 1) #define RT2661_MCU_READY (1 << 2) /* possible flags for register MCU_INT_SOURCE_CSR */ #define RT2661_MCU_CMD_DONE 0xff #define RT2661_MCU_WAKEUP (1 << 8) #define RT2661_MCU_BEACON_EXPIRE (1 << 9) /* possible flags for register H2M_MAILBOX_CSR */ #define RT2661_H2M_BUSY (1 << 24) #define RT2661_TOKEN_NO_INTR 0xff /* possible flags for register MAC_CSR5 */ #define RT2661_ONE_BSSID 3 /* possible flags for register TXRX_CSR0 */ /* Tx filter flags are in the low 16 bits */ #define RT2661_AUTO_TX_SEQ (1 << 15) /* Rx filter flags are in the high 16 bits */ #define RT2661_DISABLE_RX (1 << 16) #define RT2661_DROP_CRC_ERROR (1 << 17) #define RT2661_DROP_PHY_ERROR (1 << 18) #define RT2661_DROP_CTL (1 << 19) #define RT2661_DROP_NOT_TO_ME (1 << 20) #define RT2661_DROP_TODS (1 << 21) #define RT2661_DROP_VER_ERROR (1 << 22) #define RT2661_DROP_MULTICAST (1 << 23) #define RT2661_DROP_BROADCAST (1 << 24) #define RT2661_DROP_ACKCTS (1 << 25) /* possible flags for register TXRX_CSR4 */ #define RT2661_SHORT_PREAMBLE (1 << 18) #define RT2661_MRR_ENABLED (1 << 19) #define RT2661_MRR_CCK_FALLBACK (1 << 22) /* possible flags for register TXRX_CSR9 */ #define RT2661_TSF_TICKING (1 << 16) #define RT2661_TSF_MODE(x) (((x) & 0x3) << 17) /* TBTT stands for Target Beacon Transmission Time */ #define RT2661_ENABLE_TBTT (1 << 19) #define RT2661_GENERATE_BEACON (1 << 20) /* possible flags for register PHY_CSR0 */ #define RT2661_PA_PE_2GHZ (1 << 16) #define RT2661_PA_PE_5GHZ (1 << 17) /* possible flags for register PHY_CSR3 */ #define RT2661_BBP_READ (1 << 15) #define RT2661_BBP_BUSY (1 << 16) /* possible flags for register PHY_CSR4 */ #define RT2661_RF_21BIT (21 << 24) #define RT2661_RF_BUSY (1 << 31) /* possible values for register STA_CSR4 */ #define RT2661_TX_STAT_VALID (1 << 0) #define RT2661_TX_RESULT(v) (((v) >> 1) & 0x7) #define RT2661_TX_RETRYCNT(v) (((v) >> 4) & 0xf) #define RT2661_TX_QID(v) (((v) >> 8) & 0xf) #define RT2661_TX_SUCCESS 0 #define RT2661_TX_RETRY_FAIL 6 /* possible flags for register TX_CNTL_CSR */ #define RT2661_KICK_MGT (1 << 4) /* possible flags for register INT_SOURCE_CSR */ #define RT2661_TX_DONE (1 << 0) #define RT2661_RX_DONE (1 << 1) #define RT2661_TX0_DMA_DONE (1 << 16) #define RT2661_TX1_DMA_DONE (1 << 17) #define RT2661_TX2_DMA_DONE (1 << 18) #define RT2661_TX3_DMA_DONE (1 << 19) #define RT2661_MGT_DONE (1 << 20) /* possible flags for register E2PROM_CSR */ #define RT2661_C (1 << 1) #define RT2661_S (1 << 2) #define RT2661_D (1 << 3) #define RT2661_Q (1 << 4) #define RT2661_93C46 (1 << 5) /* Tx descriptor */ struct rt2661_tx_desc { uint32_t flags; #define RT2661_TX_BUSY (1 << 0) #define RT2661_TX_VALID (1 << 1) #define RT2661_TX_MORE_FRAG (1 << 2) #define RT2661_TX_NEED_ACK (1 << 3) #define RT2661_TX_TIMESTAMP (1 << 4) #define RT2661_TX_OFDM (1 << 5) #define RT2661_TX_IFS_SIFS (1 << 6) #define RT2661_TX_LONG_RETRY (1 << 7) #define RT2661_TX_BURST (1 << 28) uint16_t wme; #define RT2661_QID(v) (v) #define RT2661_AIFSN(v) ((v) << 4) #define RT2661_LOGCWMIN(v) ((v) << 8) #define RT2661_LOGCWMAX(v) ((v) << 12) uint16_t xflags; #define RT2661_TX_HWSEQ (1 << 12) uint8_t plcp_signal; uint8_t plcp_service; #define RT2661_PLCP_LENGEXT 0x80 uint8_t plcp_length_lo; uint8_t plcp_length_hi; uint32_t iv; uint32_t eiv; uint8_t offset; uint8_t qid; #define RT2661_QID_MGT 13 uint8_t txpower; #define RT2661_DEFAULT_TXPOWER 0 uint8_t reserved1; uint32_t addr[RT2661_MAX_SCATTER]; uint16_t len[RT2661_MAX_SCATTER]; uint16_t reserved2; } __packed; /* Rx descriptor */ struct rt2661_rx_desc { uint32_t flags; #define RT2661_RX_BUSY (1 << 0) #define RT2661_RX_DROP (1 << 1) #define RT2661_RX_CRC_ERROR (1 << 6) #define RT2661_RX_OFDM (1 << 7) #define RT2661_RX_PHY_ERROR (1 << 8) #define RT2661_RX_CIPHER_MASK 0x00000600 uint8_t rate; uint8_t rssi; uint8_t reserved1; uint8_t offset; uint32_t iv; uint32_t eiv; uint32_t reserved2; uint32_t physaddr; uint32_t reserved3[10]; } __packed; #define RAL_RF1 0 #define RAL_RF2 2 #define RAL_RF3 1 #define RAL_RF4 3 /* dual-band RF */ #define RT2661_RF_5225 1 #define RT2661_RF_5325 2 /* single-band RF */ #define RT2661_RF_2527 3 #define RT2661_RF_2529 4 #define RT2661_RX_DESC_BACK 4 #define RT2661_SMART_MODE (1 << 0) #define RT2661_BBPR94_DEFAULT 6 #define RT2661_SHIFT_D 3 #define RT2661_SHIFT_Q 4 #define RT2661_EEPROM_MAC01 0x02 #define RT2661_EEPROM_MAC23 0x03 #define RT2661_EEPROM_MAC45 0x04 #define RT2661_EEPROM_ANTENNA 0x10 #define RT2661_EEPROM_CONFIG2 0x11 #define RT2661_EEPROM_BBP_BASE 0x13 #define RT2661_EEPROM_TXPOWER 0x23 #define RT2661_EEPROM_FREQ_OFFSET 0x2f #define RT2661_EEPROM_RSSI_2GHZ_OFFSET 0x4d #define RT2661_EEPROM_RSSI_5GHZ_OFFSET 0x4e #define RT2661_EEPROM_DELAY 1 /* minimum hold time (microsecond) */ /* * control and status registers access macros */ #define RAL_READ(sc, reg) \ bus_space_read_4((sc)->sc_st, (sc)->sc_sh, (reg)) #define RAL_READ_REGION_4(sc, offset, datap, count) \ bus_space_read_region_4((sc)->sc_st, (sc)->sc_sh, (offset), \ (datap), (count)) #define RAL_WRITE(sc, reg, val) \ bus_space_write_4((sc)->sc_st, (sc)->sc_sh, (reg), (val)) #define RAL_WRITE_1(sc, reg, val) \ bus_space_write_1((sc)->sc_st, (sc)->sc_sh, (reg), (val)) #define RAL_RW_BARRIER_1(sc, reg) \ bus_space_barrier((sc)->sc_st, (sc)->sc_sh, (reg), 1, \ BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE) #define RAL_WRITE_REGION_1(sc, offset, datap, count) \ bus_space_write_region_1((sc)->sc_st, (sc)->sc_sh, (offset), \ (datap), (count)) /* * EEPROM access macro */ #define RT2661_EEPROM_CTL(sc, val) do { \ RAL_WRITE((sc), RT2661_E2PROM_CSR, (val)); \ DELAY(RT2661_EEPROM_DELAY); \ } while (/* CONSTCOND */0) /* * Default values for MAC registers; values taken from the reference driver. */ #define RT2661_DEF_MAC \ { RT2661_TXRX_CSR0, 0x0000b032 }, \ { RT2661_TXRX_CSR1, 0x9eb39eb3 }, \ { RT2661_TXRX_CSR2, 0x8a8b8c8d }, \ { RT2661_TXRX_CSR3, 0x00858687 }, \ { RT2661_TXRX_CSR7, 0x2e31353b }, \ { RT2661_TXRX_CSR8, 0x2a2a2a2c }, \ { RT2661_TXRX_CSR15, 0x0000000f }, \ { RT2661_MAC_CSR6, 0x00000fff }, \ { RT2661_MAC_CSR8, 0x016c030a }, \ { RT2661_MAC_CSR10, 0x00000718 }, \ { RT2661_MAC_CSR12, 0x00000004 }, \ { RT2661_MAC_CSR13, 0x0000e000 }, \ { RT2661_SEC_CSR0, 0x00000000 }, \ { RT2661_SEC_CSR1, 0x00000000 }, \ { RT2661_SEC_CSR5, 0x00000000 }, \ { RT2661_PHY_CSR1, 0x000023b0 }, \ { RT2661_PHY_CSR5, 0x060a100c }, \ { RT2661_PHY_CSR6, 0x00080606 }, \ { RT2661_PHY_CSR7, 0x00000a08 }, \ { RT2661_PCI_CFG_CSR, 0x3cca4808 }, \ { RT2661_AIFSN_CSR, 0x00002273 }, \ { RT2661_CWMIN_CSR, 0x00002344 }, \ { RT2661_CWMAX_CSR, 0x000034aa }, \ { RT2661_TEST_MODE_CSR, 0x00000200 }, \ { RT2661_M2H_CMD_DONE_CSR, 0xffffffff }, \ { RT2661_HW_BEACON_BASE0, 0x00000000 }, \ { RT2661_HW_BEACON_BASE1, 0x00000000 }, \ { RT2661_HW_BEACON_BASE2, 0x00000000 }, \ { RT2661_HW_BEACON_BASE3, 0x00000000 } /* * Default values for BBP registers; values taken from the reference driver. */ #define RT2661_DEF_BBP \ { 3, 0x00 }, \ { 15, 0x30 }, \ { 17, 0x20 }, \ { 21, 0xc8 }, \ { 22, 0x38 }, \ { 23, 0x06 }, \ { 24, 0xfe }, \ { 25, 0x0a }, \ { 26, 0x0d }, \ { 34, 0x12 }, \ { 37, 0x07 }, \ { 39, 0xf8 }, \ { 41, 0x60 }, \ { 53, 0x10 }, \ { 54, 0x18 }, \ { 60, 0x10 }, \ { 61, 0x04 }, \ { 62, 0x04 }, \ { 75, 0xfe }, \ { 86, 0xfe }, \ { 88, 0xfe }, \ { 90, 0x0f }, \ { 99, 0x00 }, \ { 102, 0x16 }, \ { 107, 0x04 } /* * Default settings for RF registers; values taken from the reference driver. */ #define RT2661_RF5225_1 \ { 1, 0x00b33, 0x011e1, 0x1a014, 0x30282 }, \ { 2, 0x00b33, 0x011e1, 0x1a014, 0x30287 }, \ { 3, 0x00b33, 0x011e2, 0x1a014, 0x30282 }, \ { 4, 0x00b33, 0x011e2, 0x1a014, 0x30287 }, \ { 5, 0x00b33, 0x011e3, 0x1a014, 0x30282 }, \ { 6, 0x00b33, 0x011e3, 0x1a014, 0x30287 }, \ { 7, 0x00b33, 0x011e4, 0x1a014, 0x30282 }, \ { 8, 0x00b33, 0x011e4, 0x1a014, 0x30287 }, \ { 9, 0x00b33, 0x011e5, 0x1a014, 0x30282 }, \ { 10, 0x00b33, 0x011e5, 0x1a014, 0x30287 }, \ { 11, 0x00b33, 0x011e6, 0x1a014, 0x30282 }, \ { 12, 0x00b33, 0x011e6, 0x1a014, 0x30287 }, \ { 13, 0x00b33, 0x011e7, 0x1a014, 0x30282 }, \ { 14, 0x00b33, 0x011e8, 0x1a014, 0x30284 }, \ \ { 36, 0x00b33, 0x01266, 0x26014, 0x30288 }, \ { 40, 0x00b33, 0x01268, 0x26014, 0x30280 }, \ { 44, 0x00b33, 0x01269, 0x26014, 0x30282 }, \ { 48, 0x00b33, 0x0126a, 0x26014, 0x30284 }, \ { 52, 0x00b33, 0x0126b, 0x26014, 0x30286 }, \ { 56, 0x00b33, 0x0126c, 0x26014, 0x30288 }, \ { 60, 0x00b33, 0x0126e, 0x26014, 0x30280 }, \ { 64, 0x00b33, 0x0126f, 0x26014, 0x30282 }, \ \ { 100, 0x00b33, 0x0128a, 0x2e014, 0x30280 }, \ { 104, 0x00b33, 0x0128b, 0x2e014, 0x30282 }, \ { 108, 0x00b33, 0x0128c, 0x2e014, 0x30284 }, \ { 112, 0x00b33, 0x0128d, 0x2e014, 0x30286 }, \ { 116, 0x00b33, 0x0128e, 0x2e014, 0x30288 }, \ { 120, 0x00b33, 0x012a0, 0x2e014, 0x30280 }, \ { 124, 0x00b33, 0x012a1, 0x2e014, 0x30282 }, \ { 128, 0x00b33, 0x012a2, 0x2e014, 0x30284 }, \ { 132, 0x00b33, 0x012a3, 0x2e014, 0x30286 }, \ { 136, 0x00b33, 0x012a4, 0x2e014, 0x30288 }, \ { 140, 0x00b33, 0x012a6, 0x2e014, 0x30280 }, \ \ { 149, 0x00b33, 0x012a8, 0x2e014, 0x30287 }, \ { 153, 0x00b33, 0x012a9, 0x2e014, 0x30289 }, \ { 157, 0x00b33, 0x012ab, 0x2e014, 0x30281 }, \ { 161, 0x00b33, 0x012ac, 0x2e014, 0x30283 }, \ { 165, 0x00b33, 0x012ad, 0x2e014, 0x30285 } #define RT2661_RF5225_2 \ { 1, 0x00b33, 0x011e1, 0x1a014, 0x30282 }, \ { 2, 0x00b33, 0x011e1, 0x1a014, 0x30287 }, \ { 3, 0x00b33, 0x011e2, 0x1a014, 0x30282 }, \ { 4, 0x00b33, 0x011e2, 0x1a014, 0x30287 }, \ { 5, 0x00b33, 0x011e3, 0x1a014, 0x30282 }, \ { 6, 0x00b33, 0x011e3, 0x1a014, 0x30287 }, \ { 7, 0x00b33, 0x011e4, 0x1a014, 0x30282 }, \ { 8, 0x00b33, 0x011e4, 0x1a014, 0x30287 }, \ { 9, 0x00b33, 0x011e5, 0x1a014, 0x30282 }, \ { 10, 0x00b33, 0x011e5, 0x1a014, 0x30287 }, \ { 11, 0x00b33, 0x011e6, 0x1a014, 0x30282 }, \ { 12, 0x00b33, 0x011e6, 0x1a014, 0x30287 }, \ { 13, 0x00b33, 0x011e7, 0x1a014, 0x30282 }, \ { 14, 0x00b33, 0x011e8, 0x1a014, 0x30284 }, \ \ { 36, 0x00b35, 0x11206, 0x26014, 0x30280 }, \ { 40, 0x00b34, 0x111a0, 0x26014, 0x30280 }, \ { 44, 0x00b34, 0x111a1, 0x26014, 0x30286 }, \ { 48, 0x00b34, 0x111a3, 0x26014, 0x30282 }, \ { 52, 0x00b34, 0x111a4, 0x26014, 0x30288 }, \ { 56, 0x00b34, 0x111a6, 0x26014, 0x30284 }, \ { 60, 0x00b34, 0x111a8, 0x26014, 0x30280 }, \ { 64, 0x00b34, 0x111a9, 0x26014, 0x30286 }, \ \ { 100, 0x00b35, 0x11226, 0x2e014, 0x30280 }, \ { 104, 0x00b35, 0x11228, 0x2e014, 0x30280 }, \ { 108, 0x00b35, 0x1122a, 0x2e014, 0x30280 }, \ { 112, 0x00b35, 0x1122c, 0x2e014, 0x30280 }, \ { 116, 0x00b35, 0x1122e, 0x2e014, 0x30280 }, \ { 120, 0x00b34, 0x111c0, 0x2e014, 0x30280 }, \ { 124, 0x00b34, 0x111c1, 0x2e014, 0x30286 }, \ { 128, 0x00b34, 0x111c3, 0x2e014, 0x30282 }, \ { 132, 0x00b34, 0x111c4, 0x2e014, 0x30288 }, \ { 136, 0x00b34, 0x111c6, 0x2e014, 0x30284 }, \ { 140, 0x00b34, 0x111c8, 0x2e014, 0x30280 }, \ \ { 149, 0x00b34, 0x111cb, 0x2e014, 0x30286 }, \ { 153, 0x00b34, 0x111cd, 0x2e014, 0x30282 }, \ { 157, 0x00b35, 0x11242, 0x2e014, 0x30285 }, \ { 161, 0x00b35, 0x11244, 0x2e014, 0x30285 }, \ { 165, 0x00b35, 0x11246, 0x2e014, 0x30285 }