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Diffstat (limited to '')
| -rw-r--r-- | include/soc/fsl/qe/ucc_fast.h | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/include/soc/fsl/qe/ucc_fast.h b/include/soc/fsl/qe/ucc_fast.h new file mode 100644 index 000000000..dc4e79468 --- /dev/null +++ b/include/soc/fsl/qe/ucc_fast.h @@ -0,0 +1,267 @@ +/* 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 bd_mem_part; + 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__ */ |