ecos-v3_0-branch: packages/devs/serial/generic/16x5x/current/src/ser

annotate packages/devs/serial/generic/16x5x/current/src/ser_16x5x.c @ 2818:7894f6bee6e5

* src/ser_16x5x.c: Allow platform code to override the default implementation for writing the LCR register and reading the ISR register by using the SER_16X5X_WRITE_LCR() and SER_16X5X_READ_ISR() macros.

author	jlarmour
date	Thu, 19 Feb 2009 01:02:15 +0000
parents	74dbf4c3f2e1
children

rev	line source
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	1 //==========================================================================
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	2 //
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	3 // io/serial/generic/16x5x/ser_16x5x.c
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	4 //
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	5 // Generic 16x5x serial driver
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	6 //
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	7 //==========================================================================
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	8 // ####ECOSGPLCOPYRIGHTBEGIN####
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	9 // -------------------------------------------
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	10 // This file is part of eCos, the Embedded Configurable Operating System.
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	11 // Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2006 Free Software Foundation, Inc.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 163 diff changeset	12 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	13 // eCos is free software; you can redistribute it and/or modify it under
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	14 // the terms of the GNU General Public License as published by the Free
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	15 // Software Foundation; either version 2 or (at your option) any later
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	16 // version.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 163 diff changeset	17 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	18 // eCos is distributed in the hope that it will be useful, but WITHOUT
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	19 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	21 // for more details.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 163 diff changeset	22 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	23 // You should have received a copy of the GNU General Public License
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	24 // along with eCos; if not, write to the Free Software Foundation, Inc.,
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	25 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 163 diff changeset	26 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	27 // As a special exception, if other files instantiate templates or use
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	28 // macros or inline functions from this file, or you compile this file
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	29 // and link it with other works to produce a work based on this file,
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	30 // this file does not by itself cause the resulting work to be covered by
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	31 // the GNU General Public License. However the source code for this file
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	32 // must still be made available in accordance with section (3) of the GNU
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	33 // General Public License v2.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 163 diff changeset	34 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	35 // This exception does not invalidate any other reasons why a work based
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	36 // on this file might be covered by the GNU General Public License.
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	37 // -------------------------------------------
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2488 diff changeset	38 // ####ECOSGPLCOPYRIGHTEND####
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	39 //==========================================================================
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	40 //#####DESCRIPTIONBEGIN####
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	41 //
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	42 // Author(s): gthomas
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	43 // Contributors: gthomas, jlarmour, jskov
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	44 // Date: 1999-02-04
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	45 // Purpose: 16x5x generic serial driver
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	46 // Description:
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	47 //
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	48 //####DESCRIPTIONEND####
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	49 //
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	50 //==========================================================================
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	51
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	52 #include <pkgconf/system.h>
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	53 #include <pkgconf/io_serial.h>
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	54 #include <pkgconf/io.h>
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	55
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	56 #include <cyg/io/io.h>
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	57 #include <cyg/hal/hal_intr.h>
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	58 #include <cyg/io/devtab.h>
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	59 #include <cyg/io/serial.h>
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	60 #include <cyg/infra/diag.h>
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	61 #include <cyg/infra/cyg_ass.h>
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	62 #include <cyg/hal/hal_io.h>
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	63
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	64 // Only compile driver if an inline file with driver details was selected.
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	65 #ifdef CYGDAT_IO_SERIAL_GENERIC_16X5X_INL
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	66
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	67 #ifndef CYGPRI_IO_SERIAL_GENERIC_16X5X_STEP
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	68 #define CYGPRI_IO_SERIAL_GENERIC_16X5X_STEP 1
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	69 #endif
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	70
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	71 #define SER_REG(_x_) ((_x_)*CYGPRI_IO_SERIAL_GENERIC_16X5X_STEP)
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	72
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	73 // Receive control Registers
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	74 #define REG_rhr SER_REG(0) // Receive holding register
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	75 #define REG_isr SER_REG(2) // Interrupt status register
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	76 #define REG_lsr SER_REG(5) // Line status register
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	77 #define REG_msr SER_REG(6) // Modem status register
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	78 #define REG_scr SER_REG(7) // Scratch register
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	79
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	80 // Transmit control Registers
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	81 #define REG_thr SER_REG(0) // Transmit holding register
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	82 #define REG_ier SER_REG(1) // Interrupt enable register
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	83 #define REG_fcr SER_REG(2) // FIFO control register
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	84 #define REG_lcr SER_REG(3) // Line control register
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	85 #define REG_mcr SER_REG(4) // Modem control register
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	86 #define REG_ldl SER_REG(0) // LSB of baud rate
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	87 #define REG_mdl SER_REG(1) // MSB of baud rate
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	88
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	89 // Interrupt Enable Register
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	90 #define IER_RCV 0x01
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	91 #define IER_XMT 0x02
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	92 #define IER_LS 0x04
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	93 #define IER_MS 0x08
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	94
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	95 // Line Control Register
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	96 #define LCR_WL5 0x00 // Word length
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	97 #define LCR_WL6 0x01
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	98 #define LCR_WL7 0x02
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	99 #define LCR_WL8 0x03
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	100 #define LCR_SB1 0x00 // Number of stop bits
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	101 #define LCR_SB1_5 0x04 // 1.5 -> only valid with 5 bit words
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	102 #define LCR_SB2 0x04
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	103 #define LCR_PN 0x00 // Parity mode - none
163 0d2b193a635f Merge from eCos master repository on 2001-06-22-17:38:39-BST jlarmour parents: 161 diff changeset	104 #define LCR_PE 0x18 // Parity mode - even
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	105 #define LCR_PO 0x08 // Parity mode - odd
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	106 #define LCR_PM 0x28 // Forced "mark" parity
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	107 #define LCR_PS 0x38 // Forced "space" parity
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	108 #define LCR_DL 0x80 // Enable baud rate latch
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	109
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	110 // Line Status Register
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	111 #define LSR_RSR 0x01
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	112 #define LSR_OE 0x02
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	113 #define LSR_PE 0x04
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	114 #define LSR_FE 0x08
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	115 #define LSR_BI 0x10
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	116 #define LSR_THE 0x20
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	117 #define LSR_TEMT 0x40
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	118 #define LSR_FIE 0x80
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	119
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	120 // Modem Control Register
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	121 #define MCR_DTR 0x01
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	122 #define MCR_RTS 0x02
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	123 #define MCR_INT 0x08 // Enable interrupts
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	124 #define MCR_LOOP 0x10 // Loopback mode
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	125
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	126 // Interrupt status Register
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	127 #define ISR_MS 0x00
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	128 #define ISR_nIP 0x01
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	129 #define ISR_Tx 0x02
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	130 #define ISR_Rx 0x04
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	131 #define ISR_LS 0x06
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	132 #define ISR_RxTO 0x0C
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	133 #define ISR_64BFIFO 0x20
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	134 #define ISR_FIFOworks 0x40
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	135 #define ISR_FIFOen 0x80
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	136
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	137 // Modem Status Register
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	138 #define MSR_DCTS 0x01
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	139 #define MSR_DDSR 0x02
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	140 #define MSR_TERI 0x04
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	141 #define MSR_DDCD 0x08
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	142 #define MSR_CTS 0x10
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	143 #define MSR_DSR 0x20
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	144 #define MSR_RI 0x40
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	145 #define MSR_CD 0x80
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	146
145 2e9a636d9de9 Merge from eCos master repository on 2000-12-21-14:18:40-GMT jlarmour parents: 143 diff changeset	147 // FIFO Control Register
2e9a636d9de9 Merge from eCos master repository on 2000-12-21-14:18:40-GMT jlarmour parents: 143 diff changeset	148 #define FCR_FE 0x01 // FIFO enable
2e9a636d9de9 Merge from eCos master repository on 2000-12-21-14:18:40-GMT jlarmour parents: 143 diff changeset	149 #define FCR_CRF 0x02 // Clear receive FIFO
2e9a636d9de9 Merge from eCos master repository on 2000-12-21-14:18:40-GMT jlarmour parents: 143 diff changeset	150 #define FCR_CTF 0x04 // Clear transmit FIFO
2e9a636d9de9 Merge from eCos master repository on 2000-12-21-14:18:40-GMT jlarmour parents: 143 diff changeset	151 #define FCR_DMA 0x08 // DMA mode select
2e9a636d9de9 Merge from eCos master repository on 2000-12-21-14:18:40-GMT jlarmour parents: 143 diff changeset	152 #define FCR_F64 0x20 // Enable 64 byte fifo (16750+)
2e9a636d9de9 Merge from eCos master repository on 2000-12-21-14:18:40-GMT jlarmour parents: 143 diff changeset	153 #define FCR_RT14 0xC0 // Set Rx trigger at 14
2e9a636d9de9 Merge from eCos master repository on 2000-12-21-14:18:40-GMT jlarmour parents: 143 diff changeset	154 #define FCR_RT8 0x80 // Set Rx trigger at 8
2e9a636d9de9 Merge from eCos master repository on 2000-12-21-14:18:40-GMT jlarmour parents: 143 diff changeset	155 #define FCR_RT4 0x40 // Set Rx trigger at 4
2e9a636d9de9 Merge from eCos master repository on 2000-12-21-14:18:40-GMT jlarmour parents: 143 diff changeset	156 #define FCR_RT1 0x00 // Set Rx trigger at 1
2e9a636d9de9 Merge from eCos master repository on 2000-12-21-14:18:40-GMT jlarmour parents: 143 diff changeset	157
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	158 static unsigned char select_word_length[] = {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	159 LCR_WL5, // 5 bits / word (char)
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	160 LCR_WL6,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	161 LCR_WL7,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	162 LCR_WL8
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	163 };
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	164
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	165 static unsigned char select_stop_bits[] = {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	166 0,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	167 LCR_SB1, // 1 stop bit
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	168 LCR_SB1_5, // 1.5 stop bit
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	169 LCR_SB2 // 2 stop bits
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	170 };
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	171
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	172 static unsigned char select_parity[] = {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	173 LCR_PN, // No parity
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	174 LCR_PE, // Even parity
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	175 LCR_PO, // Odd parity
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	176 LCR_PM, // Mark parity
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	177 LCR_PS, // Space parity
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	178 };
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	179
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	180 // selec_baud[] must be define by the client
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	181
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	182 typedef struct pc_serial_info {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	183 cyg_addrword_t base;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	184 int int_num;
2488 fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	185 #ifdef CYGINT_IO_SERIAL_GENERIC_16X5X_CHAN_INTPRIO
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	186 int int_prio;
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	187 #endif // CYGINT_IO_SERIAL_GENERIC_16X5X_CHAN_INTPRIO
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	188 cyg_interrupt serial_interrupt;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	189 cyg_handle_t serial_interrupt_handle;
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	190 #ifdef CYGPKG_IO_SERIAL_GENERIC_16X5X_FIFO
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	191 enum {
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	192 sNone = 0,
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	193 s8250,
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	194 s16450,
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	195 s16550,
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	196 s16550a
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	197 } deviceType;
2124 272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	198 unsigned tx_fifo_size;
272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	199 volatile unsigned tx_fifo_avail;
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	200 #endif
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	201 } pc_serial_info;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	202
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	203 static bool pc_serial_init(struct cyg_devtab_entry *tab);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	204 static bool pc_serial_putc(serial_channel *chan, unsigned char c);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	205 static Cyg_ErrNo pc_serial_lookup(struct cyg_devtab_entry **tab,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	206 struct cyg_devtab_entry *sub_tab,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	207 const char *name);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	208 static unsigned char pc_serial_getc(serial_channel *chan);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	209 static Cyg_ErrNo pc_serial_set_config(serial_channel *chan, cyg_uint32 key,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	210 const void xbuf, cyg_uint32 len);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	211 static void pc_serial_start_xmit(serial_channel *chan);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	212 static void pc_serial_stop_xmit(serial_channel *chan);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	213
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	214 static cyg_uint32 pc_serial_ISR(cyg_vector_t vector, cyg_addrword_t data);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	215 static void pc_serial_DSR(cyg_vector_t vector, cyg_ucount32 count,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	216 cyg_addrword_t data);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	217
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	218 static SERIAL_FUNS(pc_serial_funs,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	219 pc_serial_putc,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	220 pc_serial_getc,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	221 pc_serial_set_config,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	222 pc_serial_start_xmit,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	223 pc_serial_stop_xmit
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	224 );
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	225
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	226 #include CYGDAT_IO_SERIAL_GENERIC_16X5X_INL
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	227
1120 4b4f3b3ba6e4 * src/ser_16x5x.c (CYG_IO_SERIAL_GENERIC_16X5X_INT_PRIORITY): Add jlarmour parents: 841 diff changeset	228 #ifndef CYG_IO_SERIAL_GENERIC_16X5X_INT_PRIORITY
4b4f3b3ba6e4 * src/ser_16x5x.c (CYG_IO_SERIAL_GENERIC_16X5X_INT_PRIORITY): Add jlarmour parents: 841 diff changeset	229 # define CYG_IO_SERIAL_GENERIC_16X5X_INT_PRIORITY 4
4b4f3b3ba6e4 * src/ser_16x5x.c (CYG_IO_SERIAL_GENERIC_16X5X_INT_PRIORITY): Add jlarmour parents: 841 diff changeset	230 #endif
4b4f3b3ba6e4 * src/ser_16x5x.c (CYG_IO_SERIAL_GENERIC_16X5X_INT_PRIORITY): Add jlarmour parents: 841 diff changeset	231
2818 7894f6bee6e5 * src/ser_16x5x.c: jlarmour parents: 2729 diff changeset	232 // Allow platform code to override the default implementation of
7894f6bee6e5 * src/ser_16x5x.c: jlarmour parents: 2729 diff changeset	233 // a write to the LCR
7894f6bee6e5 * src/ser_16x5x.c: jlarmour parents: 2729 diff changeset	234 #ifndef SER_16X5X_WRITE_LCR
7894f6bee6e5 * src/ser_16x5x.c: jlarmour parents: 2729 diff changeset	235 #define SER_16X5X_WRITE_LCR(_base_, _val_) HAL_WRITE_UINT8((_base_) + REG_lcr, _val_)
7894f6bee6e5 * src/ser_16x5x.c: jlarmour parents: 2729 diff changeset	236 #endif
7894f6bee6e5 * src/ser_16x5x.c: jlarmour parents: 2729 diff changeset	237
7894f6bee6e5 * src/ser_16x5x.c: jlarmour parents: 2729 diff changeset	238 // Allow platform code to override the default implementation of
7894f6bee6e5 * src/ser_16x5x.c: jlarmour parents: 2729 diff changeset	239 // a read of the ISR
7894f6bee6e5 * src/ser_16x5x.c: jlarmour parents: 2729 diff changeset	240 #ifndef SER_16X5X_READ_ISR
7894f6bee6e5 * src/ser_16x5x.c: jlarmour parents: 2729 diff changeset	241 #define SER_16X5X_READ_ISR(_base_, _val_) HAL_READ_UINT8((_base_) + REG_isr, _val_)
7894f6bee6e5 * src/ser_16x5x.c: jlarmour parents: 2729 diff changeset	242 #endif
1120 4b4f3b3ba6e4 * src/ser_16x5x.c (CYG_IO_SERIAL_GENERIC_16X5X_INT_PRIORITY): Add jlarmour parents: 841 diff changeset	243
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	244 // Internal function to actually configure the hardware to desired
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	245 // baud rate, etc.
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	246 static bool
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	247 serial_config_port(serial_channel *chan,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	248 cyg_serial_info_t *new_config, bool init)
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	249 {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	250 pc_serial_info ser_chan = (pc_serial_info )chan->dev_priv;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	251 cyg_addrword_t base = ser_chan->base;
2488 fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	252 //
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	253 // If the device supports a dynamic per channel baudrate generator
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	254 // then we call the CYG_IO_SERIAL_GENERIC_16X5X_CHAN_BAUD_GENERATOR()
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	255 // macro to get the baud divisor. The macro takes the serial channel data
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	256 // pointer and the baudrate as parameters and returns the baud divisior
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	257 //
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	258 #ifdef CYG_IO_SERIAL_GENERIC_16X5X_CHAN_BAUD_GENERATOR
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	259 unsigned short baud_divisor = CYG_IO_SERIAL_GENERIC_16X5X_CHAN_BAUD_GENERATOR(ser_chan, new_config->baud);
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	260 #else
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	261 unsigned short baud_divisor = select_baud[new_config->baud];
2488 fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	262 #endif
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	263 unsigned char _lcr, _ier;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	264 if (baud_divisor == 0) return false; // Invalid configuration
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	265
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	266 // Disable port interrupts while changing hardware
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	267 HAL_READ_UINT8(base+REG_ier, _ier);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	268 HAL_WRITE_UINT8(base+REG_ier, 0);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	269
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	270 _lcr = select_word_length[new_config->word_length - CYGNUM_SERIAL_WORD_LENGTH_5] \|
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	271 select_stop_bits[new_config->stop] \|
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	272 select_parity[new_config->parity];
2818 7894f6bee6e5 * src/ser_16x5x.c: jlarmour parents: 2729 diff changeset	273 SER_16X5X_WRITE_LCR(base, _lcr \| LCR_DL);
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	274 HAL_WRITE_UINT8(base+REG_mdl, baud_divisor >> 8);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	275 HAL_WRITE_UINT8(base+REG_ldl, baud_divisor & 0xFF);
2818 7894f6bee6e5 * src/ser_16x5x.c: jlarmour parents: 2729 diff changeset	276 SER_16X5X_WRITE_LCR(base, _lcr);
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	277 if (init) {
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: 150 diff changeset	278 #ifdef CYGPKG_IO_SERIAL_GENERIC_16X5X_FIFO
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: 150 diff changeset	279 unsigned char _fcr_thresh;
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	280 cyg_uint8 b;
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: 150 diff changeset	281
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	282 /* First, find out what kind of device it is. */
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	283 ser_chan->deviceType = sNone;
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	284 HAL_WRITE_UINT8(base+REG_mcr, MCR_LOOP); // enable loopback mode
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	285 HAL_READ_UINT8(base+REG_msr, b);
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	286 if (0 == (b & 0xF0)) { // see if MSR had CD, RI, DSR or CTS set
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	287 HAL_WRITE_UINT8(base+REG_mcr, MCR_LOOP\|MCR_DTR\|MCR_RTS);
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	288 HAL_READ_UINT8(base+REG_msr, b);
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	289 if (0xF0 != (b & 0xF0)) // check that all of CD,RI,DSR and CTS set
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	290 ser_chan->deviceType = s8250;
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	291 }
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	292 HAL_WRITE_UINT8(base+REG_mcr, 0); // disable loopback mode
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	293
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	294 if (ser_chan->deviceType == s8250) {
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	295 // Check for a scratch register; scratch register
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	296 // indicates 16450 or above.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	297 HAL_WRITE_UINT8(base+REG_scr, 0x55);
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	298 HAL_READ_UINT8(base+REG_scr, b);
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	299 if (b == 0x55) {
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	300 HAL_WRITE_UINT8(base+REG_scr, 0xAA);
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	301 HAL_READ_UINT8(base+REG_scr, b);
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	302 if (b == 0xAA)
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	303 ser_chan->deviceType = s16450;
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	304 }
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: 150 diff changeset	305 }
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	306
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	307 if (ser_chan->deviceType == s16450) {
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	308 // Check for a FIFO
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	309 HAL_WRITE_UINT8(base+REG_fcr, FCR_FE);
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	310 HAL_READ_UINT8(base+REG_isr, b);
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	311 if (b & ISR_FIFOen)
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	312 ser_chan->deviceType = s16550; // but FIFO doesn't
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	313 // necessarily work
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	314 if (b & ISR_FIFOworks)
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	315 ser_chan->deviceType = s16550a; // 16550a FIFOs work
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	316 }
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	317
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	318 if (ser_chan->deviceType == s16550a) {
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	319 switch(CYGPKG_IO_SERIAL_GENERIC_16X5X_FIFO_RX_THRESHOLD) {
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	320 default:
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	321 case 1:
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	322 _fcr_thresh=FCR_RT1; break;
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	323 case 4:
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	324 _fcr_thresh=FCR_RT4; break;
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	325 case 8:
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	326 _fcr_thresh=FCR_RT8; break;
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	327 case 14:
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	328 _fcr_thresh=FCR_RT14; break;
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	329 }
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	330 _fcr_thresh\|=FCR_FE\|FCR_CRF\|FCR_CTF;
2124 272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	331 ser_chan->tx_fifo_size =
272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	332 CYGNUM_IO_SERIAL_GENERIC_16X5X_FIFO_TX_SIZE;
272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	333 // Enable and clear FIFO
272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	334 HAL_WRITE_UINT8(base+REG_fcr, _fcr_thresh);
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	335 }
2124 272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	336 else {
272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	337 ser_chan->tx_fifo_size = 1;
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	338 HAL_WRITE_UINT8(base+REG_fcr, 0); // make sure it's disabled
2124 272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	339 }
272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	340
272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	341 ser_chan->tx_fifo_avail = ser_chan->tx_fifo_size;
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: 150 diff changeset	342 #endif
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	343 if (chan->out_cbuf.len != 0) {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	344 _ier = IER_RCV;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	345 } else {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	346 _ier = 0;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	347 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	348 // Master interrupt enable
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	349 HAL_WRITE_UINT8(base+REG_mcr, MCR_INT\|MCR_DTR\|MCR_RTS);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	350 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	351 #ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	352 _ier \|= (IER_LS\|IER_MS);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	353 #endif
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	354 HAL_WRITE_UINT8(base+REG_ier, _ier);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	355
2325 29ca0a2d4a0f * src/ser_16x5x.c (serial_config_port): Add jlarmour parents: 2124 diff changeset	356 #ifdef CYGPRI_IO_SERIAL_GENERIC_16X5X_PLF_INIT_HOOK
29ca0a2d4a0f * src/ser_16x5x.c (serial_config_port): Add jlarmour parents: 2124 diff changeset	357 CYGPRI_IO_SERIAL_GENERIC_16X5X_PLF_INIT_HOOK( ser_chan, new_config );
29ca0a2d4a0f * src/ser_16x5x.c (serial_config_port): Add jlarmour parents: 2124 diff changeset	358 #endif
29ca0a2d4a0f * src/ser_16x5x.c (serial_config_port): Add jlarmour parents: 2124 diff changeset	359
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	360 if (new_config != &chan->config) {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	361 chan->config = *new_config;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	362 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	363 return true;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	364 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	365
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	366 // Function to initialize the device. Called at bootstrap time.
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	367 static bool
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	368 pc_serial_init(struct cyg_devtab_entry *tab)
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	369 {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	370 serial_channel chan = (serial_channel )tab->priv;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	371 pc_serial_info ser_chan = (pc_serial_info )chan->dev_priv;
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	372
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	373 #ifdef CYG_IO_SERIAL_GENERIC_16X5X_BAUD_GENERATOR
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	374 // Fill in baud rate table - used for platforms where this cannot
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	375 // be determined statically
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	376 int baud_idx, baud_val;
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	377 if (select_baud[0] == 9999) {
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	378 // Table not yet initialized
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	379 // Assumes that 'select_baud' looks like this:
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	380 // static int select_baud[] = {
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	381 // 9999, -- marker
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	382 // 50, -- first baud rate
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	383 // 110, -- second baud rate
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	384 // etc.
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	385 for (baud_idx = 1; baud_idx < sizeof(select_baud)/sizeof(select_baud[0]); baud_idx++) {
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	386 baud_val = CYG_IO_SERIAL_GENERIC_16X5X_BAUD_GENERATOR(select_baud[baud_idx]);
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	387 select_baud[baud_idx] = baud_val;
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	388 }
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	389 select_baud[0] = 0;
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	390 }
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	391 #endif
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 1120 diff changeset	392
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	393 #ifdef CYGDBG_IO_INIT
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	394 diag_printf("16x5x SERIAL init - dev: %x.%d\n",
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	395 ser_chan->base, ser_chan->int_num);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	396 #endif
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	397 // Really only required for interrupt driven devices
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	398 (chan->callbacks->serial_init)(chan);
2488 fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	399 //
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	400 // If the device supports per channel interrupt priorities then
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	401 // we take the priority from the serial channel data. If it does
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	402 // not support per channel interrupt priority we fall back to
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	403 // the old method and use CYG_IO_SERIAL_GENERIC_16X5X_INT_PRIORITY
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	404 // to define the priority
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	405 //
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	406 #ifdef CYGINT_IO_SERIAL_GENERIC_16X5X_CHAN_INTPRIO
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	407 cyg_priority_t intprio = ser_chan->int_prio;
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	408 #else
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	409 cyg_priority_t intprio = CYG_IO_SERIAL_GENERIC_16X5X_INT_PRIORITY;
fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	410 #endif // CYGINT_IO_SERIAL_GENERIC_16X5X_CHAN_INTPRIO
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	411 if (chan->out_cbuf.len != 0) {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	412 cyg_drv_interrupt_create(ser_chan->int_num,
2488 fc0255fc3781 * cdl/ser_generic_16x5x.cdl asl parents: 2401 diff changeset	413 intprio,
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	414 (cyg_addrword_t)chan,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	415 pc_serial_ISR,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	416 pc_serial_DSR,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	417 &ser_chan->serial_interrupt_handle,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	418 &ser_chan->serial_interrupt);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	419 cyg_drv_interrupt_attach(ser_chan->serial_interrupt_handle);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	420 cyg_drv_interrupt_unmask(ser_chan->int_num);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	421 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	422 serial_config_port(chan, &chan->config, true);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	423 return true;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	424 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	425
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	426 // This routine is called when the device is "looked" up (i.e. attached)
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	427 static Cyg_ErrNo
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	428 pc_serial_lookup(struct cyg_devtab_entry **tab,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	429 struct cyg_devtab_entry *sub_tab,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	430 const char *name)
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	431 {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	432 serial_channel chan = (serial_channel )(*tab)->priv;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	433
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	434 // Really only required for interrupt driven devices
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	435 (chan->callbacks->serial_init)(chan);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	436 return ENOERR;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	437 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	438
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	439 // Send a character to the device output buffer.
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	440 // Return 'true' if character is sent to device
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	441 static bool
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	442 pc_serial_putc(serial_channel *chan, unsigned char c)
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	443 {
2124 272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	444 #ifndef CYGPKG_IO_SERIAL_GENERIC_16X5X_FIFO
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	445 cyg_uint8 _lsr;
2124 272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	446 #endif
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	447 pc_serial_info ser_chan = (pc_serial_info )chan->dev_priv;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	448 cyg_addrword_t base = ser_chan->base;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	449
2124 272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	450 #ifdef CYGPKG_IO_SERIAL_GENERIC_16X5X_FIFO
272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	451 if (ser_chan->tx_fifo_avail > 0) {
272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	452 HAL_WRITE_UINT8(base+REG_thr, c);
272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	453 --ser_chan->tx_fifo_avail;
272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	454 return true;
272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	455 }
272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	456 #else
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	457 HAL_READ_UINT8(base+REG_lsr, _lsr);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	458 if (_lsr & LSR_THE) {
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	459 // Transmit buffer is empty
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	460 HAL_WRITE_UINT8(base+REG_thr, c);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	461 return true;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	462 }
2124 272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	463 #endif
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	464 // No space
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	465 return false;
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	466 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	467
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	468 // Fetch a character from the device input buffer, waiting if necessary
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	469 static unsigned char
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	470 pc_serial_getc(serial_channel *chan)
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	471 {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	472 unsigned char c;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	473 cyg_uint8 _lsr;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	474 pc_serial_info ser_chan = (pc_serial_info )chan->dev_priv;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	475 cyg_addrword_t base = ser_chan->base;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	476
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	477 // Wait for char
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	478 do {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	479 HAL_READ_UINT8(base+REG_lsr, _lsr);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	480 } while ((_lsr & LSR_RSR) == 0);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	481
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	482 HAL_READ_UINT8(base+REG_rhr, c);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	483 return c;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	484 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	485
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	486 // Set up the device characteristics; baud rate, etc.
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	487 static Cyg_ErrNo
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	488 pc_serial_set_config(serial_channel chan, cyg_uint32 key, const void xbuf,
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	489 cyg_uint32 *len)
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	490 {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	491 switch (key) {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	492 case CYG_IO_SET_CONFIG_SERIAL_INFO:
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	493 {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	494 cyg_serial_info_t config = (cyg_serial_info_t )xbuf;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	495 if ( *len < sizeof(cyg_serial_info_t) ) {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	496 return -EINVAL;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	497 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	498 *len = sizeof(cyg_serial_info_t);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	499 if ( true != serial_config_port(chan, config, false) )
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	500 return -EINVAL;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	501 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	502 break;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	503 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_HW
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	504 case CYG_IO_SET_CONFIG_SERIAL_HW_RX_FLOW_THROTTLE:
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	505 {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	506 cyg_uint8 _mcr;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	507 pc_serial_info ser_chan = (pc_serial_info )chan->dev_priv;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	508 cyg_addrword_t base = ser_chan->base;
841 e34f641b6e5c Fix inconsistent use of CYG_IO_SET_CONFIG_SERIAL_HW_RX_FLOW_THROTTLE "flag" gthomas parents: 210 diff changeset	509 cyg_uint32 f = (cyg_uint32 )xbuf;
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	510 unsigned char mask=0;
163 0d2b193a635f Merge from eCos master repository on 2001-06-22-17:38:39-BST jlarmour parents: 161 diff changeset	511 if ( len < sizeof(f) )
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	512 return -EINVAL;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	513
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	514 if ( chan->config.flags & CYGNUM_SERIAL_FLOW_RTSCTS_RX )
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	515 mask = MCR_RTS;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	516 if ( chan->config.flags & CYGNUM_SERIAL_FLOW_DSRDTR_RX )
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	517 mask \|= MCR_DTR;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	518 HAL_READ_UINT8(base+REG_mcr, _mcr);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	519 if (*f) // we should throttle
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	520 _mcr &= ~mask;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	521 else // we should no longer throttle
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	522 _mcr \|= mask;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	523 HAL_WRITE_UINT8(base+REG_mcr, _mcr);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	524 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	525 break;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	526 case CYG_IO_SET_CONFIG_SERIAL_HW_FLOW_CONFIG:
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	527 // Nothing to do because we do support both RTSCTS and DSRDTR flow
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	528 // control.
1120 4b4f3b3ba6e4 * src/ser_16x5x.c (CYG_IO_SERIAL_GENERIC_16X5X_INT_PRIORITY): Add jlarmour parents: 841 diff changeset	529 // Other targets would clear any unsupported flags here and
4b4f3b3ba6e4 * src/ser_16x5x.c (CYG_IO_SERIAL_GENERIC_16X5X_INT_PRIORITY): Add jlarmour parents: 841 diff changeset	530 // would then return -ENOSUPP - the higher layer can then query
4b4f3b3ba6e4 * src/ser_16x5x.c (CYG_IO_SERIAL_GENERIC_16X5X_INT_PRIORITY): Add jlarmour parents: 841 diff changeset	531 // what flags are set and decide what to do. This is optimised for
4b4f3b3ba6e4 * src/ser_16x5x.c (CYG_IO_SERIAL_GENERIC_16X5X_INT_PRIORITY): Add jlarmour parents: 841 diff changeset	532 // the most common case - i.e. that authors know what their hardware
4b4f3b3ba6e4 * src/ser_16x5x.c (CYG_IO_SERIAL_GENERIC_16X5X_INT_PRIORITY): Add jlarmour parents: 841 diff changeset	533 // is capable of.
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	534 // We just return ENOERR.
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	535 break;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	536 #endif
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	537 default:
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	538 return -EINVAL;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	539 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	540 return ENOERR;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	541 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	542
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	543 // Enable the transmitter on the device
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	544 static void
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	545 pc_serial_start_xmit(serial_channel *chan)
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	546 {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	547 pc_serial_info ser_chan = (pc_serial_info )chan->dev_priv;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	548 cyg_addrword_t base = ser_chan->base;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	549 cyg_uint8 _ier;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	550
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	551 HAL_READ_UINT8(base+REG_ier, _ier);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	552 _ier \|= IER_XMT; // Enable xmit interrupt
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	553 HAL_WRITE_UINT8(base+REG_ier, _ier);
2401 55aa7418e249 Add option to 'prime' UART Tx - on behalf of Alexander Aganichev gthomas parents: 2325 diff changeset	554 #ifdef CYGPKG_IO_SERIAL_GENERIC_16X5X_XMIT_REQUIRE_PRIME
55aa7418e249 Add option to 'prime' UART Tx - on behalf of Alexander Aganichev gthomas parents: 2325 diff changeset	555 (chan->callbacks->xmt_char)(chan);
55aa7418e249 Add option to 'prime' UART Tx - on behalf of Alexander Aganichev gthomas parents: 2325 diff changeset	556 #endif
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	557 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	558
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	559 // Disable the transmitter on the device
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	560 static void
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	561 pc_serial_stop_xmit(serial_channel *chan)
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	562 {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	563 pc_serial_info ser_chan = (pc_serial_info )chan->dev_priv;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	564 cyg_addrword_t base = ser_chan->base;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	565 cyg_uint8 _ier;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	566
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	567 HAL_READ_UINT8(base+REG_ier, _ier);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	568 _ier &= ~IER_XMT; // Disable xmit interrupt
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	569 HAL_WRITE_UINT8(base+REG_ier, _ier);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	570 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	571
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	572 // Serial I/O - low level interrupt handler (ISR)
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	573 static cyg_uint32
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	574 pc_serial_ISR(cyg_vector_t vector, cyg_addrword_t data)
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	575 {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	576 serial_channel chan = (serial_channel )data;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	577 pc_serial_info ser_chan = (pc_serial_info )chan->dev_priv;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	578 cyg_drv_interrupt_mask(ser_chan->int_num);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	579 cyg_drv_interrupt_acknowledge(ser_chan->int_num);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	580 return CYG_ISR_CALL_DSR; // Cause DSR to be run
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	581 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	582
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	583 // Serial I/O - high level interrupt handler (DSR)
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	584 static void
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	585 pc_serial_DSR(cyg_vector_t vector, cyg_ucount32 count, cyg_addrword_t data)
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	586 {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	587 serial_channel chan = (serial_channel )data;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	588 pc_serial_info ser_chan = (pc_serial_info )chan->dev_priv;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	589 cyg_addrword_t base = ser_chan->base;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	590 cyg_uint8 _isr;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	591
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	592 // Check if we have an interrupt pending - note that the interrupt
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	593 // is pending of the low bit of the isr is 0, not 1.
2818 7894f6bee6e5 * src/ser_16x5x.c: jlarmour parents: 2729 diff changeset	594 SER_16X5X_READ_ISR(base, _isr);
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	595 while ((_isr & ISR_nIP) == 0) {
150 f0e3fb000de8 Merge from eCos master repository on 2001-01-26-06:43:02-GMT jlarmour parents: 145 diff changeset	596 switch (_isr&0xE) {
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	597 case ISR_Rx:
150 f0e3fb000de8 Merge from eCos master repository on 2001-01-26-06:43:02-GMT jlarmour parents: 145 diff changeset	598 case ISR_RxTO:
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	599 {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	600 cyg_uint8 _lsr;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	601 unsigned char c;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	602 HAL_READ_UINT8(base+REG_lsr, _lsr);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	603 while(_lsr & LSR_RSR) {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	604 HAL_READ_UINT8(base+REG_rhr, c);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	605 (chan->callbacks->rcv_char)(chan, c);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	606 HAL_READ_UINT8(base+REG_lsr, _lsr);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	607 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	608 break;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	609 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	610 case ISR_Tx:
2124 272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	611 #ifdef CYGPKG_IO_SERIAL_GENERIC_16X5X_FIFO
272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	612 ser_chan->tx_fifo_avail = ser_chan->tx_fifo_size;
272d1110cda1 * cdl/ser_generic_16x5x.cdl asl parents: 1223 diff changeset	613 #endif
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	614 (chan->callbacks->xmt_char)(chan);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	615 break;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	616
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	617 #ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	618 case ISR_LS:
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	619 {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	620 cyg_serial_line_status_t stat;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	621 cyg_uint8 _lsr;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	622 HAL_READ_UINT8(base+REG_lsr, _lsr);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	623
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	624 // this might look expensive, but it is rarely the case that
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	625 // more than one of these is set
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	626 stat.value = 1;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	627 if ( _lsr & LSR_OE ) {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	628 stat.which = CYGNUM_SERIAL_STATUS_OVERRUNERR;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	629 (chan->callbacks->indicate_status)(chan, &stat );
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	630 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	631 if ( _lsr & LSR_PE ) {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	632 stat.which = CYGNUM_SERIAL_STATUS_PARITYERR;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	633 (chan->callbacks->indicate_status)(chan, &stat );
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	634 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	635 if ( _lsr & LSR_FE ) {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	636 stat.which = CYGNUM_SERIAL_STATUS_FRAMEERR;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	637 (chan->callbacks->indicate_status)(chan, &stat );
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	638 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	639 if ( _lsr & LSR_BI ) {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	640 stat.which = CYGNUM_SERIAL_STATUS_BREAK;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	641 (chan->callbacks->indicate_status)(chan, &stat );
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	642 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	643 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	644 break;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	645
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	646 case ISR_MS:
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	647 {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	648 cyg_serial_line_status_t stat;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	649 cyg_uint8 _msr;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	650
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	651 HAL_READ_UINT8(base+REG_msr, _msr);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	652 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_HW
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	653 if ( _msr & MSR_DDSR )
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	654 if ( chan->config.flags & CYGNUM_SERIAL_FLOW_DSRDTR_TX ) {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	655 stat.which = CYGNUM_SERIAL_STATUS_FLOW;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	656 stat.value = (0 != (_msr & MSR_DSR));
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	657 (chan->callbacks->indicate_status)(chan, &stat );
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	658 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	659 if ( _msr & MSR_DCTS )
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	660 if ( chan->config.flags & CYGNUM_SERIAL_FLOW_RTSCTS_TX ) {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	661 stat.which = CYGNUM_SERIAL_STATUS_FLOW;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	662 stat.value = (0 != (_msr & MSR_CTS));
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	663 (chan->callbacks->indicate_status)(chan, &stat );
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	664 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	665 #endif
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	666 if ( _msr & MSR_DDCD ) {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	667 stat.which = CYGNUM_SERIAL_STATUS_CARRIERDETECT;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	668 stat.value = (0 != (_msr & MSR_CD));
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	669 (chan->callbacks->indicate_status)(chan, &stat );
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	670 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	671 if ( _msr & MSR_RI ) {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	672 stat.which = CYGNUM_SERIAL_STATUS_RINGINDICATOR;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	673 stat.value = 1;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	674 (chan->callbacks->indicate_status)(chan, &stat );
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	675 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	676 if ( _msr & MSR_TERI ) {
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	677 stat.which = CYGNUM_SERIAL_STATUS_RINGINDICATOR;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	678 stat.value = 0;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	679 (chan->callbacks->indicate_status)(chan, &stat );
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	680 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	681 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	682 break;
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	683 #endif
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	684 default:
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	685 // Yes, this assertion may well not be visible. But
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	686 // if debugging, we may still successfully hit a breakpoint
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	687 // on cyg_assert_fail, which _is_ useful
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 156 diff changeset	688 CYG_FAIL("unhandled serial interrupt state");
126 518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	689 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	690
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	691 HAL_READ_UINT8(base+REG_isr, _isr);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	692 } // while
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	693
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	694 cyg_drv_interrupt_unmask(ser_chan->int_num);
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	695 }
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	696 #endif
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	697
518f42066aba Merge from eCos master repository on 2000-09-19-06:25:26-BST jlarmour parents: diff changeset	698 // EOF ser_16x5x.c

Mercurial > ecos-v3_0-branch

annotate packages/devs/serial/generic/16x5x/current/src/ser_16x5x.c @ 2818:7894f6bee6e5