관리-도구

편집 파일: ucc_fast.h

/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Internal header file for UCC FAST unit routines. * * Copyright (C) 2006 Freescale Semiconductor, Inc. All rights reserved. * * Authors: Shlomi Gridish <gridish@freescale.com> * Li Yang <leoli@freescale.com> */ #ifndef __UCC_FAST_H__ #define __UCC_FAST_H__ #include <linux/kernel.h> #include <soc/fsl/qe/immap_qe.h> #include <soc/fsl/qe/qe.h> #include <soc/fsl/qe/ucc.h> /* Receive BD's status and length*/ #define R_E 0x80000000 /* buffer empty */ #define R_W 0x20000000 /* wrap bit */ #define R_I 0x10000000 /* interrupt on reception */ #define R_L 0x08000000 /* last */ #define R_F 0x04000000 /* first */ /* transmit BD's status and length*/ #define T_R 0x80000000 /* ready bit */ #define T_W 0x20000000 /* wrap bit */ #define T_I 0x10000000 /* interrupt on completion */ #define T_L 0x08000000 /* last */ /* Receive BD's status */ #define R_E_S 0x8000 /* buffer empty */ #define R_W_S 0x2000 /* wrap bit */ #define R_I_S 0x1000 /* interrupt on reception */ #define R_L_S 0x0800 /* last */ #define R_F_S 0x0400 /* first */ #define R_CM_S 0x0200 /* continuous mode */ #define R_LG_S 0x0020 /* frame length */ #define R_NO_S 0x0010 /* nonoctet */ #define R_AB_S 0x0008 /* abort */ #define R_CR_S 0x0004 /* crc */ #define R_OV_S 0x0002 /* overrun */ #define R_CD_S 0x0001 /* carrier detect */ /* transmit BD's status */ #define T_R_S 0x8000 /* ready bit */ #define T_W_S 0x2000 /* wrap bit */ #define T_I_S 0x1000 /* interrupt on completion */ #define T_L_S 0x0800 /* last */ #define T_TC_S 0x0400 /* crc */ #define T_TM_S 0x0200 /* continuous mode */ #define T_UN_S 0x0002 /* hdlc underrun */ #define T_CT_S 0x0001 /* hdlc carrier lost */ /* Rx Data buffer must be 4 bytes aligned in most cases */ #define UCC_FAST_RX_ALIGN 4 #define UCC_FAST_MRBLR_ALIGNMENT 4 #define UCC_FAST_VIRT_FIFO_REGS_ALIGNMENT 8 /* Sizes */ #define UCC_FAST_URFS_MIN_VAL 0x88 #define UCC_FAST_RECEIVE_VIRTUAL_FIFO_SIZE_FUDGE_FACTOR 8 /* ucc_fast_channel_protocol_mode - UCC FAST mode */ enum ucc_fast_channel_protocol_mode { UCC_FAST_PROTOCOL_MODE_HDLC = 0x00000000, UCC_FAST_PROTOCOL_MODE_RESERVED01 = 0x00000001, UCC_FAST_PROTOCOL_MODE_RESERVED_QMC = 0x00000002, UCC_FAST_PROTOCOL_MODE_RESERVED02 = 0x00000003, UCC_FAST_PROTOCOL_MODE_RESERVED_UART = 0x00000004, UCC_FAST_PROTOCOL_MODE_RESERVED03 = 0x00000005, UCC_FAST_PROTOCOL_MODE_RESERVED_EX_MAC_1 = 0x00000006, UCC_FAST_PROTOCOL_MODE_RESERVED_EX_MAC_2 = 0x00000007, UCC_FAST_PROTOCOL_MODE_RESERVED_BISYNC = 0x00000008, UCC_FAST_PROTOCOL_MODE_RESERVED04 = 0x00000009, UCC_FAST_PROTOCOL_MODE_ATM = 0x0000000A, UCC_FAST_PROTOCOL_MODE_RESERVED05 = 0x0000000B, UCC_FAST_PROTOCOL_MODE_ETHERNET = 0x0000000C, UCC_FAST_PROTOCOL_MODE_RESERVED06 = 0x0000000D, UCC_FAST_PROTOCOL_MODE_POS = 0x0000000E, UCC_FAST_PROTOCOL_MODE_RESERVED07 = 0x0000000F }; /* ucc_fast_transparent_txrx - UCC Fast Transparent TX & RX */ enum ucc_fast_transparent_txrx { UCC_FAST_GUMR_TRANSPARENT_TTX_TRX_NORMAL = 0x00000000, UCC_FAST_GUMR_TRANSPARENT_TTX_TRX_TRANSPARENT = 0x18000000 }; /* UCC fast diagnostic mode */ enum ucc_fast_diag_mode { UCC_FAST_DIAGNOSTIC_NORMAL = 0x0, UCC_FAST_DIAGNOSTIC_LOCAL_LOOP_BACK = 0x40000000, UCC_FAST_DIAGNOSTIC_AUTO_ECHO = 0x80000000, UCC_FAST_DIAGNOSTIC_LOOP_BACK_AND_ECHO = 0xC0000000 }; /* UCC fast Sync length (transparent mode only) */ enum ucc_fast_sync_len { UCC_FAST_SYNC_LEN_NOT_USED = 0x0, UCC_FAST_SYNC_LEN_AUTOMATIC = 0x00004000, UCC_FAST_SYNC_LEN_8_BIT = 0x00008000, UCC_FAST_SYNC_LEN_16_BIT = 0x0000C000 }; /* UCC fast RTS mode */ enum ucc_fast_ready_to_send { UCC_FAST_SEND_IDLES_BETWEEN_FRAMES = 0x00000000, UCC_FAST_SEND_FLAGS_BETWEEN_FRAMES = 0x00002000 }; /* UCC fast receiver decoding mode */ enum ucc_fast_rx_decoding_method { UCC_FAST_RX_ENCODING_NRZ = 0x00000000, UCC_FAST_RX_ENCODING_NRZI = 0x00000800, UCC_FAST_RX_ENCODING_RESERVED0 = 0x00001000, UCC_FAST_RX_ENCODING_RESERVED1 = 0x00001800 }; /* UCC fast transmitter encoding mode */ enum ucc_fast_tx_encoding_method { UCC_FAST_TX_ENCODING_NRZ = 0x00000000, UCC_FAST_TX_ENCODING_NRZI = 0x00000100, UCC_FAST_TX_ENCODING_RESERVED0 = 0x00000200, UCC_FAST_TX_ENCODING_RESERVED1 = 0x00000300 }; /* UCC fast CRC length */ enum ucc_fast_transparent_tcrc { UCC_FAST_16_BIT_CRC = 0x00000000, UCC_FAST_CRC_RESERVED0 = 0x00000040, UCC_FAST_32_BIT_CRC = 0x00000080, UCC_FAST_CRC_RESERVED1 = 0x000000C0 }; /* Fast UCC initialization structure */ struct ucc_fast_info { int ucc_num; int tdm_num; enum qe_clock rx_clock; enum qe_clock tx_clock; enum qe_clock rx_sync; enum qe_clock tx_sync; resource_size_t regs; int irq; u32 uccm_mask; int brkpt_support; int grant_support; int tsa; int cdp; int cds; int ctsp; int ctss; int tci; int txsy; int rtsm; int revd; int rsyn; u16 max_rx_buf_length; u16 urfs; u16 urfet; u16 urfset; u16 utfs; u16 utfet; u16 utftt; u16 ufpt; enum ucc_fast_channel_protocol_mode mode; enum ucc_fast_transparent_txrx ttx_trx; enum ucc_fast_tx_encoding_method tenc; enum ucc_fast_rx_decoding_method renc; enum ucc_fast_transparent_tcrc tcrc; enum ucc_fast_sync_len synl; }; struct ucc_fast_private { struct ucc_fast_info *uf_info; struct ucc_fast __iomem *uf_regs; /* a pointer to the UCC regs. */ __be32 __iomem *p_ucce; /* a pointer to the event register in memory. */ __be32 __iomem *p_uccm; /* a pointer to the mask register in memory. */ #ifdef CONFIG_UGETH_TX_ON_DEMAND __be16 __iomem *p_utodr;/* pointer to the transmit on demand register */ #endif int enabled_tx; /* Whether channel is enabled for Tx (ENT) */ int enabled_rx; /* Whether channel is enabled for Rx (ENR) */ int stopped_tx; /* Whether channel has been stopped for Tx (STOP_TX, etc.) */ int stopped_rx; /* Whether channel has been stopped for Rx */ s32 ucc_fast_tx_virtual_fifo_base_offset;/* pointer to base of Tx virtual fifo */ s32 ucc_fast_rx_virtual_fifo_base_offset;/* pointer to base of Rx virtual fifo */ #ifdef STATISTICS u32 tx_frames; /* Transmitted frames counter. */ u32 rx_frames; /* Received frames counter (only frames passed to application). */ u32 tx_discarded; /* Discarded tx frames counter (frames that were discarded by the driver due to errors). */ u32 rx_discarded; /* Discarded rx frames counter (frames that were discarded by the driver due to errors). */ #endif /* STATISTICS */ u16 mrblr; /* maximum receive buffer length */ }; /* ucc_fast_init * Initializes Fast UCC according to user provided parameters. * * uf_info - (In) pointer to the fast UCC info structure. * uccf_ret - (Out) pointer to the fast UCC structure. */ int ucc_fast_init(struct ucc_fast_info * uf_info, struct ucc_fast_private ** uccf_ret); /* ucc_fast_free * Frees all resources for fast UCC. * * uccf - (In) pointer to the fast UCC structure. */ void ucc_fast_free(struct ucc_fast_private * uccf); /* ucc_fast_enable * Enables a fast UCC port. * This routine enables Tx and/or Rx through the General UCC Mode Register. * * uccf - (In) pointer to the fast UCC structure. * mode - (In) TX, RX, or both. */ void ucc_fast_enable(struct ucc_fast_private * uccf, enum comm_dir mode); /* ucc_fast_disable * Disables a fast UCC port. * This routine disables Tx and/or Rx through the General UCC Mode Register. * * uccf - (In) pointer to the fast UCC structure. * mode - (In) TX, RX, or both. */ void ucc_fast_disable(struct ucc_fast_private * uccf, enum comm_dir mode); /* ucc_fast_irq * Handles interrupts on fast UCC. * Called from the general interrupt routine to handle interrupts on fast UCC. * * uccf - (In) pointer to the fast UCC structure. */ void ucc_fast_irq(struct ucc_fast_private * uccf); /* ucc_fast_transmit_on_demand * Immediately forces a poll of the transmitter for data to be sent. * Typically, the hardware performs a periodic poll for data that the * transmit routine has set up to be transmitted. In cases where * this polling cycle is not soon enough, this optional routine can * be invoked to force a poll right away, instead. Proper use for * each transmission for which this functionality is desired is to * call the transmit routine and then this routine right after. * * uccf - (In) pointer to the fast UCC structure. */ void ucc_fast_transmit_on_demand(struct ucc_fast_private * uccf); u32 ucc_fast_get_qe_cr_subblock(int uccf_num); void ucc_fast_dump_regs(struct ucc_fast_private * uccf); #endif /* __UCC_FAST_H__ */