--- /dev/null
+/******************************************************************************
+ *
+ * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ *******************************************************************************/
+#ifndef __RTL8723D_SPEC_H__
+#define __RTL8723D_SPEC_H__
+
+#include <drv_conf.h>
+
+
+#define HAL_NAV_UPPER_UNIT_8723D 128 /* micro-second */
+
+/* -----------------------------------------------------
+ *
+ * 0x0000h ~ 0x00FFh System Configuration
+ *
+ * ----------------------------------------------------- */
+#define REG_SYS_ISO_CTRL_8723D 0x0000 /* 2 Byte */
+#define REG_SYS_FUNC_EN_8723D 0x0002 /* 2 Byte */
+#define REG_APS_FSMCO_8723D 0x0004 /* 4 Byte */
+#define REG_SYS_CLKR_8723D 0x0008 /* 2 Byte */
+#define REG_9346CR_8723D 0x000A /* 2 Byte */
+#define REG_EE_VPD_8723D 0x000C /* 2 Byte */
+#define REG_AFE_MISC_8723D 0x0010 /* 1 Byte */
+#define REG_SPS0_CTRL_8723D 0x0011 /* 7 Byte */
+#define REG_SPS_OCP_CFG_8723D 0x0018 /* 4 Byte */
+#define REG_RSV_CTRL_8723D 0x001C /* 3 Byte */
+#define REG_RF_CTRL_8723D 0x001F /* 1 Byte */
+#define REG_LPLDO_CTRL_8723D 0x0023 /* 1 Byte */
+#define REG_AFE_XTAL_CTRL_8723D 0x0024 /* 4 Byte */
+#define REG_AFE_PLL_CTRL_8723D 0x0028 /* 4 Byte */
+#define REG_MAC_PLL_CTRL_EXT_8723D 0x002c /* 4 Byte */
+#define REG_EFUSE_CTRL_8723D 0x0030
+#define REG_EFUSE_TEST_8723D 0x0034
+#define REG_PWR_DATA_8723D 0x0038
+#define REG_CAL_TIMER_8723D 0x003C
+#define REG_ACLK_MON_8723D 0x003E
+#define REG_GPIO_MUXCFG_8723D 0x0040
+#define REG_GPIO_IO_SEL_8723D 0x0042
+#define REG_MAC_PINMUX_CFG_8723D 0x0043
+#define REG_GPIO_PIN_CTRL_8723D 0x0044
+#define REG_GPIO_INTM_8723D 0x0048
+#define REG_LEDCFG0_8723D 0x004C
+#define REG_LEDCFG1_8723D 0x004D
+#define REG_LEDCFG2_8723D 0x004E
+#define REG_LEDCFG3_8723D 0x004F
+#define REG_FSIMR_8723D 0x0050
+#define REG_FSISR_8723D 0x0054
+#define REG_HSIMR_8723D 0x0058
+#define REG_HSISR_8723D 0x005c
+#define REG_GPIO_EXT_CTRL 0x0060
+#define REG_PAD_CTRL1_8723D 0x0064
+#define REG_MULTI_FUNC_CTRL_8723D 0x0068
+#define REG_GPIO_STATUS_8723D 0x006C
+#define REG_SDIO_CTRL_8723D 0x0070
+#define REG_OPT_CTRL_8723D 0x0074
+#define REG_AFE_CTRL_4_8723D 0x0078
+#define REG_MCUFWDL_8723D 0x0080
+#define REG_8051FW_CTRL_8723D 0x0080
+#define REG_HMEBOX_DBG_0_8723D 0x0088
+#define REG_HMEBOX_DBG_1_8723D 0x008A
+#define REG_HMEBOX_DBG_2_8723D 0x008C
+#define REG_HMEBOX_DBG_3_8723D 0x008E
+#define REG_WLLPS_CTRL 0x0090
+#define REG_HIMR0_8723D 0x00B0
+#define REG_HISR0_8723D 0x00B4
+#define REG_HIMR1_8723D 0x00B8
+#define REG_HISR1_8723D 0x00BC
+#define REG_PMC_DBG_CTRL2_8723D 0x00CC
+#define REG_EFUSE_BURN_GNT_8723D 0x00CF
+#define REG_HPON_FSM_8723D 0x00EC
+#define REG_SYS_CFG_8723D 0x00FC
+#define REG_ROM_VERSION 0x00FD
+
+/* -----------------------------------------------------
+ *
+ * 0x0100h ~ 0x01FFh MACTOP General Configuration
+ *
+ * ----------------------------------------------------- */
+#define REG_C2HEVT_CMD_ID_8723D 0x01A0
+#define REG_C2HEVT_CMD_SEQ_88XX 0x01A1
+#define REG_C2hEVT_CMD_CONTENT_88XX 0x01A2
+#define REG_C2HEVT_CMD_LEN_8723D 0x01AE
+#define REG_C2HEVT_CLEAR_8723D 0x01AF
+#define REG_MCUTST_1_8723D 0x01C0
+#define REG_WOWLAN_WAKE_REASON 0x01C7
+#define REG_FMETHR_8723D 0x01C8
+#define REG_HMETFR_8723D 0x01CC
+#define REG_HMEBOX_0_8723D 0x01D0
+#define REG_HMEBOX_1_8723D 0x01D4
+#define REG_HMEBOX_2_8723D 0x01D8
+#define REG_HMEBOX_3_8723D 0x01DC
+#define REG_LLT_INIT_8723D 0x01E0
+#define REG_HMEBOX_EXT0_8723D 0x01F0
+#define REG_HMEBOX_EXT1_8723D 0x01F4
+#define REG_HMEBOX_EXT2_8723D 0x01F8
+#define REG_HMEBOX_EXT3_8723D 0x01FC
+
+/* -----------------------------------------------------
+ *
+ * 0x0200h ~ 0x027Fh TXDMA Configuration
+ *
+ * ----------------------------------------------------- */
+#define REG_RQPN_8723D 0x0200
+#define REG_FIFOPAGE_8723D 0x0204
+#define REG_DWBCN0_CTRL_8723D REG_TDECTRL
+#define REG_TXDMA_OFFSET_CHK_8723D 0x020C
+#define REG_TXDMA_STATUS_8723D 0x0210
+#define REG_RQPN_NPQ_8723D 0x0214
+#define REG_DWBCN1_CTRL_8723D 0x0228
+
+
+/* -----------------------------------------------------
+ *
+ * 0x0280h ~ 0x02FFh RXDMA Configuration
+ *
+ * ----------------------------------------------------- */
+#define REG_RXDMA_AGG_PG_TH_8723D 0x0280
+#define REG_FW_UPD_RDPTR_8723D 0x0284 /* FW shall update this register before FW write RXPKT_RELEASE_POLL to 1 */
+#define REG_RXDMA_CONTROL_8723D 0x0286 /* Control the RX DMA. */
+#define REG_RXDMA_STATUS_8723D 0x0288
+#define REG_RXDMA_MODE_CTRL_8723D 0x0290
+#define REG_EARLY_MODE_CONTROL_8723D 0x02BC
+#define REG_RSVD5_8723D 0x02F0
+#define REG_RSVD6_8723D 0x02F4
+
+/* -----------------------------------------------------
+ *
+ * 0x0300h ~ 0x03FFh PCIe
+ *
+ * ----------------------------------------------------- */
+#define REG_PCIE_CTRL_REG_8723D 0x0300
+#define REG_INT_MIG_8723D 0x0304 /* Interrupt Migration */
+#define REG_BCNQ_TXBD_DESA_8723D 0x0308 /* TX Beacon Descriptor Address */
+#define REG_MGQ_TXBD_DESA_8723D 0x0310 /* TX Manage Queue Descriptor Address */
+#define REG_VOQ_TXBD_DESA_8723D 0x0318 /* TX VO Queue Descriptor Address */
+#define REG_VIQ_TXBD_DESA_8723D 0x0320 /* TX VI Queue Descriptor Address */
+#define REG_BEQ_TXBD_DESA_8723D 0x0328 /* TX BE Queue Descriptor Address */
+#define REG_BKQ_TXBD_DESA_8723D 0x0330 /* TX BK Queue Descriptor Address */
+#define REG_RXQ_RXBD_DESA_8723D 0x0338 /* RX Queue Descriptor Address */
+#define REG_HI0Q_TXBD_DESA_8723D 0x0340
+#define REG_HI1Q_TXBD_DESA_8723D 0x0348
+#define REG_HI2Q_TXBD_DESA_8723D 0x0350
+#define REG_HI3Q_TXBD_DESA_8723D 0x0358
+#define REG_HI4Q_TXBD_DESA_8723D 0x0360
+#define REG_HI5Q_TXBD_DESA_8723D 0x0368
+#define REG_HI6Q_TXBD_DESA_8723D 0x0370
+#define REG_HI7Q_TXBD_DESA_8723D 0x0378
+#define REG_MGQ_TXBD_NUM_8723D 0x0380
+#define REG_RX_RXBD_NUM_8723D 0x0382
+#define REG_VOQ_TXBD_NUM_8723D 0x0384
+#define REG_VIQ_TXBD_NUM_8723D 0x0386
+#define REG_BEQ_TXBD_NUM_8723D 0x0388
+#define REG_BKQ_TXBD_NUM_8723D 0x038A
+#define REG_HI0Q_TXBD_NUM_8723D 0x038C
+#define REG_HI1Q_TXBD_NUM_8723D 0x038E
+#define REG_HI2Q_TXBD_NUM_8723D 0x0390
+#define REG_HI3Q_TXBD_NUM_8723D 0x0392
+#define REG_HI4Q_TXBD_NUM_8723D 0x0394
+#define REG_HI5Q_TXBD_NUM_8723D 0x0396
+#define REG_HI6Q_TXBD_NUM_8723D 0x0398
+#define REG_HI7Q_TXBD_NUM_8723D 0x039A
+#define REG_TSFTIMER_HCI_8723D 0x039C
+#define REG_BD_RW_PTR_CLR_8723D 0x039C
+
+/* Read Write Point */
+#define REG_VOQ_TXBD_IDX_8723D 0x03A0
+#define REG_VIQ_TXBD_IDX_8723D 0x03A4
+#define REG_BEQ_TXBD_IDX_8723D 0x03A8
+#define REG_BKQ_TXBD_IDX_8723D 0x03AC
+#define REG_MGQ_TXBD_IDX_8723D 0x03B0
+#define REG_RXQ_TXBD_IDX_8723D 0x03B4
+#define REG_HI0Q_TXBD_IDX_8723D 0x03B8
+#define REG_HI1Q_TXBD_IDX_8723D 0x03BC
+#define REG_HI2Q_TXBD_IDX_8723D 0x03C0
+#define REG_HI3Q_TXBD_IDX_8723D 0x03C4
+#define REG_HI4Q_TXBD_IDX_8723D 0x03C8
+#define REG_HI5Q_TXBD_IDX_8723D 0x03CC
+#define REG_HI6Q_TXBD_IDX_8723D 0x03D0
+#define REG_HI7Q_TXBD_IDX_8723D 0x03D4
+
+#define REG_PCIE_HCPWM_8723DE 0x03D8 /* ?????? */
+#define REG_PCIE_HRPWM_8723DE 0x03DC /* PCIe RPWM ?????? */
+#define REG_DBI_WDATA_V1_8723D 0x03E8
+#define REG_DBI_RDATA_V1_8723D 0x03EC
+#define REG_DBI_FLAG_V1_8723D 0x03F0
+#define REG_MDIO_V1_8723D 0x03F4
+#define REG_PCIE_MIX_CFG_8723D 0x03F8
+#define REG_HCI_MIX_CFG_8723D 0x03FC
+
+/* -----------------------------------------------------
+ *
+ * 0x0400h ~ 0x047Fh Protocol Configuration
+ *
+ * ----------------------------------------------------- */
+#define REG_VOQ_INFORMATION_8723D 0x0400
+#define REG_VIQ_INFORMATION_8723D 0x0404
+#define REG_BEQ_INFORMATION_8723D 0x0408
+#define REG_BKQ_INFORMATION_8723D 0x040C
+#define REG_MGQ_INFORMATION_8723D 0x0410
+#define REG_HGQ_INFORMATION_8723D 0x0414
+#define REG_BCNQ_INFORMATION_8723D 0x0418
+#define REG_TXPKT_EMPTY_8723D 0x041A
+
+#define REG_FWHW_TXQ_CTRL_8723D 0x0420
+#define REG_HWSEQ_CTRL_8723D 0x0423
+#define REG_TXPKTBUF_BCNQ_BDNY_8723D 0x0424
+#define REG_TXPKTBUF_MGQ_BDNY_8723D 0x0425
+#define REG_LIFECTRL_CTRL_8723D 0x0426
+#define REG_MULTI_BCNQ_OFFSET_8723D 0x0427
+#define REG_SPEC_SIFS_8723D 0x0428
+#define REG_RL_8723D 0x042A
+#define REG_TXBF_CTRL_8723D 0x042C
+#define REG_DARFRC_8723D 0x0430
+#define REG_RARFRC_8723D 0x0438
+#define REG_RRSR_8723D 0x0440
+#define REG_ARFR0_8723D 0x0444
+#define REG_ARFR1_8723D 0x044C
+#define REG_CCK_CHECK_8723D 0x0454
+#define REG_AMPDU_MAX_TIME_8723D 0x0456
+#define REG_TXPKTBUF_BCNQ_BDNY1_8723D 0x0457
+
+#define REG_AMPDU_MAX_LENGTH_8723D 0x0458
+#define REG_TXPKTBUF_WMAC_LBK_BF_HD_8723D 0x045D
+#define REG_NDPA_OPT_CTRL_8723D 0x045F
+#define REG_FAST_EDCA_CTRL_8723D 0x0460
+#define REG_RD_RESP_PKT_TH_8723D 0x0463
+#define REG_DATA_SC_8723D 0x0483
+#ifdef CONFIG_WOWLAN
+ #define REG_TXPKTBUF_IV_LOW 0x0484
+ #define REG_TXPKTBUF_IV_HIGH 0x0488
+#endif
+#define REG_TXRPT_START_OFFSET 0x04AC
+#define REG_POWER_STAGE1_8723D 0x04B4
+#define REG_POWER_STAGE2_8723D 0x04B8
+#define REG_AMPDU_BURST_MODE_8723D 0x04BC
+#define REG_PKT_VO_VI_LIFE_TIME_8723D 0x04C0
+#define REG_PKT_BE_BK_LIFE_TIME_8723D 0x04C2
+#define REG_STBC_SETTING_8723D 0x04C4
+#define REG_HT_SINGLE_AMPDU_8723D 0x04C7
+#define REG_PROT_MODE_CTRL_8723D 0x04C8
+#define REG_MAX_AGGR_NUM_8723D 0x04CA
+#define REG_RTS_MAX_AGGR_NUM_8723D 0x04CB
+#define REG_BAR_MODE_CTRL_8723D 0x04CC
+#define REG_RA_TRY_RATE_AGG_LMT_8723D 0x04CF
+#define REG_MACID_PKT_DROP0_8723D 0x04D0
+#define REG_MACID_PKT_SLEEP_8723D 0x04D4
+
+/* -----------------------------------------------------
+ *
+ * 0x0500h ~ 0x05FFh EDCA Configuration
+ *
+ * ----------------------------------------------------- */
+#define REG_EDCA_VO_PARAM_8723D 0x0500
+#define REG_EDCA_VI_PARAM_8723D 0x0504
+#define REG_EDCA_BE_PARAM_8723D 0x0508
+#define REG_EDCA_BK_PARAM_8723D 0x050C
+#define REG_BCNTCFG_8723D 0x0510
+#define REG_PIFS_8723D 0x0512
+#define REG_RDG_PIFS_8723D 0x0513
+#define REG_SIFS_CTX_8723D 0x0514
+#define REG_SIFS_TRX_8723D 0x0516
+#define REG_AGGR_BREAK_TIME_8723D 0x051A
+#define REG_SLOT_8723D 0x051B
+#define REG_TX_PTCL_CTRL_8723D 0x0520
+#define REG_TXPAUSE_8723D 0x0522
+#define REG_DIS_TXREQ_CLR_8723D 0x0523
+#define REG_RD_CTRL_8723D 0x0524
+/*
+ * Format for offset 540h-542h:
+ * [3:0]: TBTT prohibit setup in unit of 32us. The time for HW getting beacon content before TBTT.
+ * [7:4]: Reserved.
+ * [19:8]: TBTT prohibit hold in unit of 32us. The time for HW holding to send the beacon packet.
+ * [23:20]: Reserved
+ * Description:
+ * |
+ * |<--Setup--|--Hold------------>|
+ * --------------|----------------------
+ * |
+ * TBTT
+ * Note: We cannot update beacon content to HW or send any AC packets during the time between Setup and Hold.
+ * Described by Designer Tim and Bruce, 2011-01-14.
+ * */
+#define REG_TBTT_PROHIBIT_8723D 0x0540
+#define REG_RD_NAV_NXT_8723D 0x0544
+#define REG_NAV_PROT_LEN_8723D 0x0546
+#define REG_BCN_CTRL_8723D 0x0550
+#define REG_BCN_CTRL_1_8723D 0x0551
+#define REG_MBID_NUM_8723D 0x0552
+#define REG_DUAL_TSF_RST_8723D 0x0553
+#define REG_BCN_INTERVAL_8723D 0x0554
+#define REG_DRVERLYINT_8723D 0x0558
+#define REG_BCNDMATIM_8723D 0x0559
+#define REG_ATIMWND_8723D 0x055A
+#define REG_USTIME_TSF_8723D 0x055C
+#define REG_BCN_MAX_ERR_8723D 0x055D
+#define REG_RXTSF_OFFSET_CCK_8723D 0x055E
+#define REG_RXTSF_OFFSET_OFDM_8723D 0x055F
+#define REG_TSFTR_8723D 0x0560
+#define REG_CTWND_8723D 0x0572
+#define REG_SECONDARY_CCA_CTRL_8723D 0x0577
+#define REG_PSTIMER_8723D 0x0580
+#define REG_TIMER0_8723D 0x0584
+#define REG_TIMER1_8723D 0x0588
+#define REG_ACMHWCTRL_8723D 0x05C0
+#define REG_SCH_TXCMD_8723D 0x05F8
+
+/* -----------------------------------------------------
+ *
+ * 0x0600h ~ 0x07FFh WMAC Configuration
+ *
+ * ----------------------------------------------------- */
+#define REG_MAC_CR_8723D 0x0600
+#define REG_TCR_8723D 0x0604
+#define REG_RCR_8723D 0x0608
+#define REG_RX_PKT_LIMIT_8723D 0x060C
+#define REG_RX_DLK_TIME_8723D 0x060D
+#define REG_RX_DRVINFO_SZ_8723D 0x060F
+
+#define REG_MACID_8723D 0x0610
+#define REG_BSSID_8723D 0x0618
+#define REG_MAR_8723D 0x0620
+#define REG_MBIDCAMCFG_8723D 0x0628
+#define REG_WOWLAN_GTK_DBG1 0x630
+#define REG_WOWLAN_GTK_DBG2 0x634
+
+#define REG_USTIME_EDCA_8723D 0x0638
+#define REG_MAC_SPEC_SIFS_8723D 0x063A
+#define REG_RESP_SIFP_CCK_8723D 0x063C
+#define REG_RESP_SIFS_OFDM_8723D 0x063E
+#define REG_ACKTO_8723D 0x0640
+#define REG_CTS2TO_8723D 0x0641
+#define REG_EIFS_8723D 0x0642
+
+#define REG_NAV_UPPER_8723D 0x0652 /* unit of 128 */
+#define REG_TRXPTCL_CTL_8723D 0x0668
+
+/* Security */
+#define REG_CAMCMD_8723D 0x0670
+#define REG_CAMWRITE_8723D 0x0674
+#define REG_CAMREAD_8723D 0x0678
+#define REG_CAMDBG_8723D 0x067C
+#define REG_SECCFG_8723D 0x0680
+
+/* Power */
+#define REG_WOW_CTRL_8723D 0x0690
+#define REG_PS_RX_INFO_8723D 0x0692
+#define REG_UAPSD_TID_8723D 0x0693
+#define REG_WKFMCAM_CMD_8723D 0x0698
+#define REG_WKFMCAM_NUM_8723D 0x0698
+#define REG_WKFMCAM_RWD_8723D 0x069C
+#define REG_RXFLTMAP0_8723D 0x06A0
+#define REG_RXFLTMAP1_8723D 0x06A2
+#define REG_RXFLTMAP2_8723D 0x06A4
+#define REG_BCN_PSR_RPT_8723D 0x06A8
+#define REG_BT_COEX_TABLE_8723D 0x06C0
+#define REG_BFMER0_INFO_8723D 0x06E4
+#define REG_BFMER1_INFO_8723D 0x06EC
+#define REG_CSI_RPT_PARAM_BW20_8723D 0x06F4
+#define REG_CSI_RPT_PARAM_BW40_8723D 0x06F8
+#define REG_CSI_RPT_PARAM_BW80_8723D 0x06FC
+
+/* Hardware Port 2 */
+#define REG_MACID1_8723D 0x0700
+#define REG_BSSID1_8723D 0x0708
+#define REG_BFMEE_SEL_8723D 0x0714
+#define REG_SND_PTCL_CTRL_8723D 0x0718
+
+/* LTE_COEX */
+#define REG_LTECOEX_CTRL 0x07C0
+#define REG_LTECOEX_WRITE_DATA 0x07C4
+#define REG_LTECOEX_READ_DATA 0x07C8
+#define REG_LTECOEX_PATH_CONTROL 0x70
+
+/* ************************************************************
+ * SDIO Bus Specification
+ * ************************************************************ */
+
+/* -----------------------------------------------------
+ * SDIO CMD Address Mapping
+ * ----------------------------------------------------- */
+
+/* -----------------------------------------------------
+ * I/O bus domain (Host)
+ * ----------------------------------------------------- */
+
+/* -----------------------------------------------------
+ * SDIO register
+ * ----------------------------------------------------- */
+#define SDIO_REG_HCPWM1_8723D 0x025 /* HCI Current Power Mode 1 */
+
+
+/* ****************************************************************************
+ * 8723 Regsiter Bit and Content definition
+ * **************************************************************************** */
+
+#define BIT_USB_RXDMA_AGG_EN BIT(31)
+#define RXDMA_AGG_MODE_EN BIT(1)
+
+#ifdef CONFIG_WOWLAN
+ #define RXPKT_RELEASE_POLL BIT(16)
+ #define RXDMA_IDLE BIT(17)
+ #define RW_RELEASE_EN BIT(18)
+#endif
+
+/* 2 HSISR
+ * interrupt mask which needs to clear */
+#define MASK_HSISR_CLEAR (HSISR_GPIO12_0_INT |\
+ HSISR_SPS_OCP_INT |\
+ HSISR_RON_INT |\
+ HSISR_PDNINT |\
+ HSISR_GPIO9_INT)
+
+#ifdef CONFIG_RF_POWER_TRIM
+ #ifdef CONFIG_RTL8723D
+ #define EEPROM_RF_GAIN_OFFSET 0xC1
+ #endif
+
+ #define EEPROM_RF_GAIN_VAL 0x1F6
+#endif /*CONFIG_RF_POWER_TRIM*/
+
+#ifdef CONFIG_PCI_HCI
+ /* #define IMR_RX_MASK (IMR_ROK_8723D|IMR_RDU_8723D|IMR_RXFOVW_8723D) */
+ #define IMR_TX_MASK (IMR_VODOK_8723D | IMR_VIDOK_8723D | IMR_BEDOK_8723D | IMR_BKDOK_8723D | IMR_MGNTDOK_8723D | IMR_HIGHDOK_8723D)
+
+ #define RT_BCN_INT_MASKS (IMR_BCNDMAINT0_8723D | IMR_TXBCN0OK_8723D | IMR_TXBCN0ERR_8723D | IMR_BCNDERR0_8723D)
+
+ #define RT_AC_INT_MASKS (IMR_VIDOK_8723D | IMR_VODOK_8723D | IMR_BEDOK_8723D | IMR_BKDOK_8723D)
+#endif
+
+#endif /* __RTL8723D_SPEC_H__ */
projects / firefly-linux-kernel-4.4.55.git / blobdiff