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freebsd-skq/sys/dev/ic/ns16550.h

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Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
/*-
* Copyright (c) 1991 The Regents of the University of California.
* 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.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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.
*
Removed all patch kit headers, sccsid and rcsid strings, put $Id$ in, some minor cleanup. Added $Id$ to files that did not have any version info, etc
1993-10-16 13:48:52 +00:00
* from: @(#)ns16550.h 7.1 (Berkeley) 5/9/91
$Id$ -> $FreeBSD$
1999-08-28 01:08:13 +00:00
* $FreeBSD$
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
*/
/*
Sorted register numbers together with the correspoding register bits. Merged comments to match (put them at the right of the #defines instead of duplicating them). Sorted the resulting sections on UART type and register bank. Added a comment for each bank.
2003-09-16 11:54:29 +00:00
* NS8250... UART registers.
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
*/
Sorted register numbers together with the correspoding register bits. Merged comments to match (put them at the right of the #defines instead of duplicating them). Sorted the resulting sections on UART type and register bank. Added a comment for each bank.
2003-09-16 11:54:29 +00:00
/* 8250 registers #[0-6]. */
Initial import, 0.1 + pk 0.2.4-B1
1993-06-12 14:58:17 +00:00
#define com_data 0 /* data register (R/W) */
o Remove the com_thr, com_rhr, com_isr and com_lctl defines. They are not used and aliases for other defines. o Add REG_DATA as an alias for com_data. Likewise for other register defines. o Add LCR_SBREAK and make CFCR_SBREAK an alias for it. Likewise for the other LCR register bits that are known with the CFCR prefix. o Add MCR_IE and make MCR_IENABLE an alias for it. o Add LSR_TEMT and make LSR_TSRE an alias for it. o Add LSR_THRE and make LSR_TXRDY as alias for it. o Add FCR_ENABLE and make FIFO_ENABLE as alias for it. Likewise for the other FCR register bits that are known with the FIFO prefix. o Add EFR_CTS and make EFR_AUTOCTS an alias for it. o Add EFR_RTS and make EFR_AUTORTS an alias for it. This is a first step in cleaning up the definitions in this file.
2004-11-20 23:19:42 +00:00
#define REG_DATA com_data
Moved the definitions of the bits in the ns*50 registers from sioreg.h to ns16550.h. The organization of these files was sort of backwards. The bits in the registers have no driver or bus dependencies but they but the offsets of the registers in bus space are very bus-dependent. However, it does no harm to keep the definitions of the register offsets in ns16550.h provided they are thought of as internal ns*50 offsets.
2003-09-16 08:08:08 +00:00
Sorted register numbers together with the correspoding register bits. Merged comments to match (put them at the right of the #defines instead of duplicating them). Sorted the resulting sections on UART type and register bank. Added a comment for each bank.
2003-09-16 11:54:29 +00:00
#define com_ier 1 /* interrupt enable register (W) */
o Remove the com_thr, com_rhr, com_isr and com_lctl defines. They are not used and aliases for other defines. o Add REG_DATA as an alias for com_data. Likewise for other register defines. o Add LCR_SBREAK and make CFCR_SBREAK an alias for it. Likewise for the other LCR register bits that are known with the CFCR prefix. o Add MCR_IE and make MCR_IENABLE an alias for it. o Add LSR_TEMT and make LSR_TSRE an alias for it. o Add LSR_THRE and make LSR_TXRDY as alias for it. o Add FCR_ENABLE and make FIFO_ENABLE as alias for it. Likewise for the other FCR register bits that are known with the FIFO prefix. o Add EFR_CTS and make EFR_AUTOCTS an alias for it. o Add EFR_RTS and make EFR_AUTORTS an alias for it. This is a first step in cleaning up the definitions in this file.
2004-11-20 23:19:42 +00:00
#define REG_IER com_ier
Moved the definitions of the bits in the ns*50 registers from sioreg.h to ns16550.h. The organization of these files was sort of backwards. The bits in the registers have no driver or bus dependencies but they but the offsets of the registers in bus space are very bus-dependent. However, it does no harm to keep the definitions of the register offsets in ns16550.h provided they are thought of as internal ns*50 offsets.
2003-09-16 08:08:08 +00:00
#define IER_ERXRDY 0x1
#define IER_ETXRDY 0x2
#define IER_ERLS 0x4
#define IER_EMSC 0x8
Sorted register numbers together with the correspoding register bits. Merged comments to match (put them at the right of the #defines instead of duplicating them). Sorted the resulting sections on UART type and register bank. Added a comment for each bank.
2003-09-16 11:54:29 +00:00
#define com_iir 2 /* interrupt identification register (R) */
o Remove the com_thr, com_rhr, com_isr and com_lctl defines. They are not used and aliases for other defines. o Add REG_DATA as an alias for com_data. Likewise for other register defines. o Add LCR_SBREAK and make CFCR_SBREAK an alias for it. Likewise for the other LCR register bits that are known with the CFCR prefix. o Add MCR_IE and make MCR_IENABLE an alias for it. o Add LSR_TEMT and make LSR_TSRE an alias for it. o Add LSR_THRE and make LSR_TXRDY as alias for it. o Add FCR_ENABLE and make FIFO_ENABLE as alias for it. Likewise for the other FCR register bits that are known with the FIFO prefix. o Add EFR_CTS and make EFR_AUTOCTS an alias for it. o Add EFR_RTS and make EFR_AUTORTS an alias for it. This is a first step in cleaning up the definitions in this file.
2004-11-20 23:19:42 +00:00
#define REG_IIR com_iir
Moved the definitions of the bits in the ns*50 registers from sioreg.h to ns16550.h. The organization of these files was sort of backwards. The bits in the registers have no driver or bus dependencies but they but the offsets of the registers in bus space are very bus-dependent. However, it does no harm to keep the definitions of the register offsets in ns16550.h provided they are thought of as internal ns*50 offsets.
2003-09-16 08:08:08 +00:00
#define IIR_IMASK 0xf
#define IIR_RXTOUT 0xc
#define IIR_RLS 0x6
#define IIR_RXRDY 0x4
#define IIR_TXRDY 0x2
#define IIR_NOPEND 0x1
#define IIR_MLSC 0x0
#define IIR_FIFO_MASK 0xc0 /* set if FIFOs are enabled */
Fixed a minor error in the description of the EFR and a major error in the description of the data latch registers (they were described as readonly). Added some better and worse aliases for standard registers, mostly taken from the 16950 data sheet. Define deprecated aliases in terms of the preferred one. Don't define com_efr in terms of com_fifo. It is unrelated (in a different bank).
2003-09-16 13:52:01 +00:00
#define com_lcr 3 /* line control register (R/W) */
#define com_cfcr com_lcr /* character format control register (R/W) */
o Remove the com_thr, com_rhr, com_isr and com_lctl defines. They are not used and aliases for other defines. o Add REG_DATA as an alias for com_data. Likewise for other register defines. o Add LCR_SBREAK and make CFCR_SBREAK an alias for it. Likewise for the other LCR register bits that are known with the CFCR prefix. o Add MCR_IE and make MCR_IENABLE an alias for it. o Add LSR_TEMT and make LSR_TSRE an alias for it. o Add LSR_THRE and make LSR_TXRDY as alias for it. o Add FCR_ENABLE and make FIFO_ENABLE as alias for it. Likewise for the other FCR register bits that are known with the FIFO prefix. o Add EFR_CTS and make EFR_AUTOCTS an alias for it. o Add EFR_RTS and make EFR_AUTORTS an alias for it. This is a first step in cleaning up the definitions in this file.
2004-11-20 23:19:42 +00:00
#define REG_LCR com_lcr
Fixed a minor error in the description of the EFR and a major error in the description of the data latch registers (they were described as readonly). Added some better and worse aliases for standard registers, mostly taken from the 16950 data sheet. Define deprecated aliases in terms of the preferred one. Don't define com_efr in terms of com_fifo. It is unrelated (in a different bank).
2003-09-16 13:52:01 +00:00
#define LCR_DLAB 0x80
#define CFCR_DLAB LCR_DLAB
#define LCR_EFR_ENABLE 0xbf /* magic to enable EFR on 16650 up */
#define CFCR_EFR_ENABLE LCR_EFR_ENABLE
o Remove the com_thr, com_rhr, com_isr and com_lctl defines. They are not used and aliases for other defines. o Add REG_DATA as an alias for com_data. Likewise for other register defines. o Add LCR_SBREAK and make CFCR_SBREAK an alias for it. Likewise for the other LCR register bits that are known with the CFCR prefix. o Add MCR_IE and make MCR_IENABLE an alias for it. o Add LSR_TEMT and make LSR_TSRE an alias for it. o Add LSR_THRE and make LSR_TXRDY as alias for it. o Add FCR_ENABLE and make FIFO_ENABLE as alias for it. Likewise for the other FCR register bits that are known with the FIFO prefix. o Add EFR_CTS and make EFR_AUTOCTS an alias for it. o Add EFR_RTS and make EFR_AUTORTS an alias for it. This is a first step in cleaning up the definitions in this file.
2004-11-20 23:19:42 +00:00
#define LCR_SBREAK 0x40
#define CFCR_SBREAK LCR_SBREAK
#define LCR_PZERO 0x30
#define CFCR_PZERO LCR_PZERO
#define LCR_PONE 0x20
#define CFCR_PONE LCR_PONE
#define LCR_PEVEN 0x10
#define CFCR_PEVEN LCR_PEVEN
#define LCR_PODD 0x00
#define CFCR_PODD LCR_PODD
#define LCR_PENAB 0x08
#define CFCR_PENAB LCR_PENAB
#define LCR_STOPB 0x04
#define CFCR_STOPB LCR_STOPB
#define LCR_8BITS 0x03
#define CFCR_8BITS LCR_8BITS
#define LCR_7BITS 0x02
#define CFCR_7BITS LCR_7BITS
#define LCR_6BITS 0x01
#define CFCR_6BITS LCR_6BITS
#define LCR_5BITS 0x00
#define CFCR_5BITS LCR_5BITS
Moved the definitions of the bits in the ns*50 registers from sioreg.h to ns16550.h. The organization of these files was sort of backwards. The bits in the registers have no driver or bus dependencies but they but the offsets of the registers in bus space are very bus-dependent. However, it does no harm to keep the definitions of the register offsets in ns16550.h provided they are thought of as internal ns*50 offsets.
2003-09-16 08:08:08 +00:00
Sorted register numbers together with the correspoding register bits. Merged comments to match (put them at the right of the #defines instead of duplicating them). Sorted the resulting sections on UART type and register bank. Added a comment for each bank.
2003-09-16 11:54:29 +00:00
#define com_mcr 4 /* modem control register (R/W) */
o Remove the com_thr, com_rhr, com_isr and com_lctl defines. They are not used and aliases for other defines. o Add REG_DATA as an alias for com_data. Likewise for other register defines. o Add LCR_SBREAK and make CFCR_SBREAK an alias for it. Likewise for the other LCR register bits that are known with the CFCR prefix. o Add MCR_IE and make MCR_IENABLE an alias for it. o Add LSR_TEMT and make LSR_TSRE an alias for it. o Add LSR_THRE and make LSR_TXRDY as alias for it. o Add FCR_ENABLE and make FIFO_ENABLE as alias for it. Likewise for the other FCR register bits that are known with the FIFO prefix. o Add EFR_CTS and make EFR_AUTOCTS an alias for it. o Add EFR_RTS and make EFR_AUTORTS an alias for it. This is a first step in cleaning up the definitions in this file.
2004-11-20 23:19:42 +00:00
#define REG_MCR com_mcr
Sorted register numbers together with the correspoding register bits. Merged comments to match (put them at the right of the #defines instead of duplicating them). Sorted the resulting sections on UART type and register bank. Added a comment for each bank.
2003-09-16 11:54:29 +00:00
#define MCR_PRESCALE 0x80 /* only available on 16650 up */
Moved the definitions of the bits in the ns*50 registers from sioreg.h to ns16550.h. The organization of these files was sort of backwards. The bits in the registers have no driver or bus dependencies but they but the offsets of the registers in bus space are very bus-dependent. However, it does no harm to keep the definitions of the register offsets in ns16550.h provided they are thought of as internal ns*50 offsets.
2003-09-16 08:08:08 +00:00
#define MCR_LOOPBACK 0x10
o Remove the com_thr, com_rhr, com_isr and com_lctl defines. They are not used and aliases for other defines. o Add REG_DATA as an alias for com_data. Likewise for other register defines. o Add LCR_SBREAK and make CFCR_SBREAK an alias for it. Likewise for the other LCR register bits that are known with the CFCR prefix. o Add MCR_IE and make MCR_IENABLE an alias for it. o Add LSR_TEMT and make LSR_TSRE an alias for it. o Add LSR_THRE and make LSR_TXRDY as alias for it. o Add FCR_ENABLE and make FIFO_ENABLE as alias for it. Likewise for the other FCR register bits that are known with the FIFO prefix. o Add EFR_CTS and make EFR_AUTOCTS an alias for it. o Add EFR_RTS and make EFR_AUTORTS an alias for it. This is a first step in cleaning up the definitions in this file.
2004-11-20 23:19:42 +00:00
#define MCR_IE 0x08
#define MCR_IENABLE MCR_IE
Moved the definitions of the bits in the ns*50 registers from sioreg.h to ns16550.h. The organization of these files was sort of backwards. The bits in the registers have no driver or bus dependencies but they but the offsets of the registers in bus space are very bus-dependent. However, it does no harm to keep the definitions of the register offsets in ns16550.h provided they are thought of as internal ns*50 offsets.
2003-09-16 08:08:08 +00:00
#define MCR_DRS 0x04
#define MCR_RTS 0x02
#define MCR_DTR 0x01
Sorted register numbers together with the correspoding register bits. Merged comments to match (put them at the right of the #defines instead of duplicating them). Sorted the resulting sections on UART type and register bank. Added a comment for each bank.
2003-09-16 11:54:29 +00:00
#define com_lsr 5 /* line status register (R/W) */
o Remove the com_thr, com_rhr, com_isr and com_lctl defines. They are not used and aliases for other defines. o Add REG_DATA as an alias for com_data. Likewise for other register defines. o Add LCR_SBREAK and make CFCR_SBREAK an alias for it. Likewise for the other LCR register bits that are known with the CFCR prefix. o Add MCR_IE and make MCR_IENABLE an alias for it. o Add LSR_TEMT and make LSR_TSRE an alias for it. o Add LSR_THRE and make LSR_TXRDY as alias for it. o Add FCR_ENABLE and make FIFO_ENABLE as alias for it. Likewise for the other FCR register bits that are known with the FIFO prefix. o Add EFR_CTS and make EFR_AUTOCTS an alias for it. o Add EFR_RTS and make EFR_AUTORTS an alias for it. This is a first step in cleaning up the definitions in this file.
2004-11-20 23:19:42 +00:00
#define REG_LSR com_lsr
Moved the definitions of the bits in the ns*50 registers from sioreg.h to ns16550.h. The organization of these files was sort of backwards. The bits in the registers have no driver or bus dependencies but they but the offsets of the registers in bus space are very bus-dependent. However, it does no harm to keep the definitions of the register offsets in ns16550.h provided they are thought of as internal ns*50 offsets.
2003-09-16 08:08:08 +00:00
#define LSR_RCV_FIFO 0x80
o Remove the com_thr, com_rhr, com_isr and com_lctl defines. They are not used and aliases for other defines. o Add REG_DATA as an alias for com_data. Likewise for other register defines. o Add LCR_SBREAK and make CFCR_SBREAK an alias for it. Likewise for the other LCR register bits that are known with the CFCR prefix. o Add MCR_IE and make MCR_IENABLE an alias for it. o Add LSR_TEMT and make LSR_TSRE an alias for it. o Add LSR_THRE and make LSR_TXRDY as alias for it. o Add FCR_ENABLE and make FIFO_ENABLE as alias for it. Likewise for the other FCR register bits that are known with the FIFO prefix. o Add EFR_CTS and make EFR_AUTOCTS an alias for it. o Add EFR_RTS and make EFR_AUTORTS an alias for it. This is a first step in cleaning up the definitions in this file.
2004-11-20 23:19:42 +00:00
#define LSR_TEMT 0x40
#define LSR_TSRE LSR_TEMT
#define LSR_THRE 0x20
#define LSR_TXRDY LSR_THRE
Moved the definitions of the bits in the ns*50 registers from sioreg.h to ns16550.h. The organization of these files was sort of backwards. The bits in the registers have no driver or bus dependencies but they but the offsets of the registers in bus space are very bus-dependent. However, it does no harm to keep the definitions of the register offsets in ns16550.h provided they are thought of as internal ns*50 offsets.
2003-09-16 08:08:08 +00:00
#define LSR_BI 0x10
#define LSR_FE 0x08
#define LSR_PE 0x04
#define LSR_OE 0x02
#define LSR_RXRDY 0x01
#define LSR_RCV_MASK 0x1f
Sorted register numbers together with the correspoding register bits. Merged comments to match (put them at the right of the #defines instead of duplicating them). Sorted the resulting sections on UART type and register bank. Added a comment for each bank.
2003-09-16 11:54:29 +00:00
#define com_msr 6 /* modem status register (R/W) */
o Remove the com_thr, com_rhr, com_isr and com_lctl defines. They are not used and aliases for other defines. o Add REG_DATA as an alias for com_data. Likewise for other register defines. o Add LCR_SBREAK and make CFCR_SBREAK an alias for it. Likewise for the other LCR register bits that are known with the CFCR prefix. o Add MCR_IE and make MCR_IENABLE an alias for it. o Add LSR_TEMT and make LSR_TSRE an alias for it. o Add LSR_THRE and make LSR_TXRDY as alias for it. o Add FCR_ENABLE and make FIFO_ENABLE as alias for it. Likewise for the other FCR register bits that are known with the FIFO prefix. o Add EFR_CTS and make EFR_AUTOCTS an alias for it. o Add EFR_RTS and make EFR_AUTORTS an alias for it. This is a first step in cleaning up the definitions in this file.
2004-11-20 23:19:42 +00:00
#define REG_MSR com_msr
Moved the definitions of the bits in the ns*50 registers from sioreg.h to ns16550.h. The organization of these files was sort of backwards. The bits in the registers have no driver or bus dependencies but they but the offsets of the registers in bus space are very bus-dependent. However, it does no harm to keep the definitions of the register offsets in ns16550.h provided they are thought of as internal ns*50 offsets.
2003-09-16 08:08:08 +00:00
#define MSR_DCD 0x80
#define MSR_RI 0x40
#define MSR_DSR 0x20
#define MSR_CTS 0x10
#define MSR_DDCD 0x08
#define MSR_TERI 0x04
#define MSR_DDSR 0x02
#define MSR_DCTS 0x01
Sorted register numbers together with the correspoding register bits. Merged comments to match (put them at the right of the #defines instead of duplicating them). Sorted the resulting sections on UART type and register bank. Added a comment for each bank.
2003-09-16 11:54:29 +00:00
/* 8250 multiplexed registers #[0-1]. Access enabled by LCR[7]. */
Fixed a minor error in the description of the EFR and a major error in the description of the data latch registers (they were described as readonly). Added some better and worse aliases for standard registers, mostly taken from the 16950 data sheet. Define deprecated aliases in terms of the preferred one. Don't define com_efr in terms of com_fifo. It is unrelated (in a different bank).
2003-09-16 13:52:01 +00:00
#define com_dll 0 /* divisor latch low (R/W) */
#define com_dlbl com_dll
#define com_dlm 1 /* divisor latch high (R/W) */
#define com_dlbh com_dlm
Allow uart(4)'s ns8250 driver to work with devices whose regshift is > 0. - Rename REG_DL to REG_DLL and REG_DLH. - Always treat DLL and DLH as two separate 8-bit registers instead of one 16-bit register. Additionally, remove the probe for the high 4 bits of IER being 0 and don't assume we can always read/write 0 to/from those bits. These changes allow uart(4) to drive the UARTs on the Intel XScale PXA255. Reviewed by: marcel
2006-05-23 00:41:12 +00:00
#define REG_DLL com_dll
#define REG_DLH com_dlm
Sorted register numbers together with the correspoding register bits. Merged comments to match (put them at the right of the #defines instead of duplicating them). Sorted the resulting sections on UART type and register bank. Added a comment for each bank.
2003-09-16 11:54:29 +00:00
/* 16450 register #7. Not multiplexed. */
#define com_scr 7 /* scratch register (R/W) */
/* 16550 register #2. Not multiplexed. */
Fixed a minor error in the description of the EFR and a major error in the description of the data latch registers (they were described as readonly). Added some better and worse aliases for standard registers, mostly taken from the 16950 data sheet. Define deprecated aliases in terms of the preferred one. Don't define com_efr in terms of com_fifo. It is unrelated (in a different bank).
2003-09-16 13:52:01 +00:00
#define com_fcr 2 /* FIFO control register (W) */
#define com_fifo com_fcr
o Remove the com_thr, com_rhr, com_isr and com_lctl defines. They are not used and aliases for other defines. o Add REG_DATA as an alias for com_data. Likewise for other register defines. o Add LCR_SBREAK and make CFCR_SBREAK an alias for it. Likewise for the other LCR register bits that are known with the CFCR prefix. o Add MCR_IE and make MCR_IENABLE an alias for it. o Add LSR_TEMT and make LSR_TSRE an alias for it. o Add LSR_THRE and make LSR_TXRDY as alias for it. o Add FCR_ENABLE and make FIFO_ENABLE as alias for it. Likewise for the other FCR register bits that are known with the FIFO prefix. o Add EFR_CTS and make EFR_AUTOCTS an alias for it. o Add EFR_RTS and make EFR_AUTORTS an alias for it. This is a first step in cleaning up the definitions in this file.
2004-11-20 23:19:42 +00:00
#define REG_FCR com_fcr
#define FCR_ENABLE 0x01
#define FIFO_ENABLE FCR_ENABLE
#define FCR_RCV_RST 0x02
#define FIFO_RCV_RST FCR_RCV_RST
#define FCR_XMT_RST 0x04
#define FIFO_XMT_RST FCR_XMT_RST
#define FCR_DMA 0x08
#define FIFO_DMA_MODE FCR_DMA
#define FCR_RX_LOW 0x00
#define FIFO_RX_LOW FCR_RX_LOW
#define FCR_RX_MEDL 0x40
#define FIFO_RX_MEDL FCR_RX_MEDL
#define FCR_RX_MEDH 0x80
#define FIFO_RX_MEDH FCR_RX_MEDH
#define FCR_RX_HIGH 0xc0
#define FIFO_RX_HIGH FCR_RX_HIGH
Sorted register numbers together with the correspoding register bits. Merged comments to match (put them at the right of the #defines instead of duplicating them). Sorted the resulting sections on UART type and register bank. Added a comment for each bank.
2003-09-16 11:54:29 +00:00
/* 16650 registers #2,[4-7]. Access enabled by LCR_EFR_ENABLE. */
Fixed a minor error in the description of the EFR and a major error in the description of the data latch registers (they were described as readonly). Added some better and worse aliases for standard registers, mostly taken from the 16950 data sheet. Define deprecated aliases in terms of the preferred one. Don't define com_efr in terms of com_fifo. It is unrelated (in a different bank).
2003-09-16 13:52:01 +00:00
#define com_efr 2 /* enhanced features register (R/W) */
o Remove the com_thr, com_rhr, com_isr and com_lctl defines. They are not used and aliases for other defines. o Add REG_DATA as an alias for com_data. Likewise for other register defines. o Add LCR_SBREAK and make CFCR_SBREAK an alias for it. Likewise for the other LCR register bits that are known with the CFCR prefix. o Add MCR_IE and make MCR_IENABLE an alias for it. o Add LSR_TEMT and make LSR_TSRE an alias for it. o Add LSR_THRE and make LSR_TXRDY as alias for it. o Add FCR_ENABLE and make FIFO_ENABLE as alias for it. Likewise for the other FCR register bits that are known with the FIFO prefix. o Add EFR_CTS and make EFR_AUTOCTS an alias for it. o Add EFR_RTS and make EFR_AUTORTS an alias for it. This is a first step in cleaning up the definitions in this file.
2004-11-20 23:19:42 +00:00
#define REG_EFR com_efr
#define EFR_CTS 0x80
#define EFR_AUTOCTS EFR_CTS
#define EFR_RTS 0x40
#define EFR_AUTORTS EFR_RTS
Sorted register numbers together with the correspoding register bits. Merged comments to match (put them at the right of the #defines instead of duplicating them). Sorted the resulting sections on UART type and register bank. Added a comment for each bank.
2003-09-16 11:54:29 +00:00
#define EFR_EFE 0x10 /* enhanced functions enable */
Moved the definitions of the bits in the ns*50 registers from sioreg.h to ns16550.h. The organization of these files was sort of backwards. The bits in the registers have no driver or bus dependencies but they but the offsets of the registers in bus space are very bus-dependent. However, it does no harm to keep the definitions of the register offsets in ns16550.h provided they are thought of as internal ns*50 offsets.
2003-09-16 08:08:08 +00:00
Added definitions for some 16650 features (mostly misfeatures). This completes defining the 16650 register numbers but not all of their bits.
2003-09-16 14:08:54 +00:00
#define com_xon1 4 /* XON 1 character (R/W) */
#define com_xon2 5 /* XON 2 character (R/W) */
#define com_xoff1 6 /* XOFF 1 character (R/W) */
#define com_xoff2 7 /* XOFF 2 character (R/W) */
Added definitions of most of the interesting 16950 register numbers and some of their bits (i.e., fifo trigger levels, frequency multipliers and divisors, and bits to select the registers for these). This attempts to completely describe the 16950's complicated register selects for 16950-specific registers only.
2003-09-16 14:21:17 +00:00
/* 16950 register #1. Access enabled by ACR[7]. Also requires !LCR[7]. */
#define com_asr 1 /* additional status register (R[0-7]/W[0-1]) */
/* 16950 register #3. R/W access enabled by ACR[7]. */
#define com_rfl 3 /* receiver fifo level (R) */
/*
* 16950 register #4. Access enabled by ACR[7]. Also requires
* !LCR_EFR_ENABLE.
*/
#define com_tfl 4 /* transmitter fifo level (R) */
/*
* 16950 register #5. Accessible if !LCR_EFR_ENABLE. Read access also
* requires ACR[6].
*/
#define com_icr 5 /* index control register (R/W) */
/*
* 16950 register #7. It is the same as com_scr except it has a different
* abbreviation in the manufacturer's data sheet and it also serves as an
* index into the Indexed Control register set.
*/
#define com_spr com_scr /* scratch pad (and index) register (R/W) */
o Remove the com_thr, com_rhr, com_isr and com_lctl defines. They are not used and aliases for other defines. o Add REG_DATA as an alias for com_data. Likewise for other register defines. o Add LCR_SBREAK and make CFCR_SBREAK an alias for it. Likewise for the other LCR register bits that are known with the CFCR prefix. o Add MCR_IE and make MCR_IENABLE an alias for it. o Add LSR_TEMT and make LSR_TSRE an alias for it. o Add LSR_THRE and make LSR_TXRDY as alias for it. o Add FCR_ENABLE and make FIFO_ENABLE as alias for it. Likewise for the other FCR register bits that are known with the FIFO prefix. o Add EFR_CTS and make EFR_AUTOCTS an alias for it. o Add EFR_RTS and make EFR_AUTORTS an alias for it. This is a first step in cleaning up the definitions in this file.
2004-11-20 23:19:42 +00:00
#define REG_SPR com_scr
Added definitions of most of the interesting 16950 register numbers and some of their bits (i.e., fifo trigger levels, frequency multipliers and divisors, and bits to select the registers for these). This attempts to completely describe the 16950's complicated register selects for 16950-specific registers only.
2003-09-16 14:21:17 +00:00
/*
* 16950 indexed control registers #[0-0x13]. Access is via index in SPR,
* data in ICR (if ICR is accessible).
*/
#define com_acr 0 /* additional control register (R/W) */
#define ACR_ASE 0x80 /* ASR/RFL/TFL enable */
#define ACR_ICRE 0x40 /* ICR enable */
#define ACR_TLE 0x20 /* TTL/RTL enable */
#define com_cpr 1 /* clock prescaler register (R/W) */
#define com_tcr 2 /* times clock register (R/W) */
#define com_ttl 4 /* transmitter trigger level (R/W) */
#define com_rtl 5 /* receiver trigger level (R/W) */
/* ... */
Moved the definitions of the bits in the ns*50 registers from sioreg.h to ns16550.h. The organization of these files was sort of backwards. The bits in the registers have no driver or bus dependencies but they but the offsets of the registers in bus space are very bus-dependent. However, it does no harm to keep the definitions of the register offsets in ns16550.h provided they are thought of as internal ns*50 offsets.
2003-09-16 08:08:08 +00:00
/* Hardware extension mode register for RSB-2000/3000. */
#define com_emr com_msr
#define EMR_EXBUFF 0x04
#define EMR_CTSFLW 0x08
#define EMR_DSRFLW 0x10
#define EMR_RTSFLW 0x20
#define EMR_DTRFLW 0x40
#define EMR_EFMODE 0x80
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