ecos: packages/io/serial/current/src/common/serial.c annotate

annotate packages/io/serial/current/src/common/serial.c @ 3292:7f8e529b4d82 default tip

Fix FREESCALE_EDMA_NBYTES_MLOFFYES_MLOFF() so it works with negative offsets.

author	vae
date	Wed, 29 Apr 2015 23:31:48 +0000
parents	74dbf4c3f2e1
children

rev	line source
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	1 //==========================================================================
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	2 //
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	3 // io/serial/common/serial.c
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	4 //
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	5 // High level serial driver
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	6 //
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	7 //==========================================================================
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2004 diff changeset	8 // ####ECOSGPLCOPYRIGHTBEGIN####
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2004 diff changeset	9 // -------------------------------------------
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2004 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: 2004 diff changeset	11 // Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 143 diff changeset	12 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2004 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: 2004 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: 2004 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: 2004 diff changeset	16 // version.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 143 diff changeset	17 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2004 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: 2004 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: 2004 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: 2004 diff changeset	21 // for more details.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 143 diff changeset	22 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2004 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: 2004 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: 2004 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: 143 diff changeset	26 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2004 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: 2004 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: 2004 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: 2004 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: 2004 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: 2004 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: 2004 diff changeset	33 // General Public License v2.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 143 diff changeset	34 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2004 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: 2004 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: 2004 diff changeset	37 // -------------------------------------------
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2004 diff changeset	38 // ####ECOSGPLCOPYRIGHTEND####
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	39 //==========================================================================
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	40 //#####DESCRIPTIONBEGIN####
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	41 //
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	42 // Author(s): gthomas
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	43 // Contributors: gthomas, grante, jlarmour, jskov
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	44 // Date: 1999-02-04
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	45 // Purpose: Top level serial driver
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	46 // Description:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	47 //
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	48 //####DESCRIPTIONEND####
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	49 //
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	50 //==========================================================================
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	51
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	52 #include <pkgconf/io.h>
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	53 #include <pkgconf/io_serial.h>
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	54
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	55 #include <cyg/io/io.h>
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	56 #include <cyg/io/devtab.h>
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	57 #include <cyg/io/serial.h>
130 eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 128 diff changeset	58 #include <cyg/infra/cyg_ass.h> // assertion support
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 128 diff changeset	59 #include <cyg/infra/diag.h> // diagnostic output
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	60
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	61 static Cyg_ErrNo serial_write(cyg_io_handle_t handle, const void buf, cyg_uint32 len);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	62 static Cyg_ErrNo serial_read(cyg_io_handle_t handle, void buf, cyg_uint32 len);
1190 d53522870fc0 * src/common/serial.c: Make serial_select prototype match jlarmour parents: 1054 diff changeset	63 static cyg_bool serial_select(cyg_io_handle_t handle, cyg_uint32 which, CYG_ADDRWORD info);
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	64 static Cyg_ErrNo serial_get_config(cyg_io_handle_t handle, cyg_uint32 key, void buf, cyg_uint32 len);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	65 static Cyg_ErrNo serial_set_config(cyg_io_handle_t handle, cyg_uint32 key, const void buf, cyg_uint32 len);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	66
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 20 diff changeset	67 DEVIO_TABLE(cyg_io_serial_devio,
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	68 serial_write,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	69 serial_read,
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	70 serial_select,
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	71 serial_get_config,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	72 serial_set_config
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	73 );
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	74
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	75 static void serial_init(serial_channel *chan);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	76 static void serial_xmt_char(serial_channel *chan);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	77 static void serial_rcv_char(serial_channel *chan, unsigned char c);
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	78 #ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	79 static void serial_indicate_status(serial_channel *chan,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	80 cyg_serial_line_status_t *s);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	81 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	82 #if CYGINT_IO_SERIAL_BLOCK_TRANSFER
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	83 static rcv_req_reply_t serial_data_rcv_req(serial_channel *chan, int avail,
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	84 int* space_avail,
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	85 unsigned char** space);
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	86 static void serial_data_rcv_done(serial_channel *chan, int chars_rcvd);
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	87 static xmt_req_reply_t serial_data_xmt_req(serial_channel *chan, int space,
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	88 int* chars_avail,
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	89 unsigned char** chars);
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	90 static void serial_data_xmt_done(serial_channel *chan, int chars_sent);
143 6b5f480c6929 Merge from eCos master repository on 2000-12-08-02:09:36-GMT jlarmour parents: 138 diff changeset	91 # ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	92 SERIAL_CALLBACKS(cyg_io_serial_callbacks,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	93 serial_init,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	94 serial_xmt_char,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	95 serial_rcv_char,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	96 serial_data_rcv_req,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	97 serial_data_rcv_done,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	98 serial_data_xmt_req,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	99 serial_data_xmt_done,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	100 serial_indicate_status);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	101
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	102 # else
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	103 SERIAL_CALLBACKS(cyg_io_serial_callbacks,
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	104 serial_init,
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	105 serial_xmt_char,
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	106 serial_rcv_char,
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	107 serial_data_rcv_req,
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	108 serial_data_rcv_done,
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	109 serial_data_xmt_req,
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	110 serial_data_xmt_done);
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	111 # endif
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	112 #else
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	113 # ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	114 SERIAL_CALLBACKS(cyg_io_serial_callbacks,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	115 serial_init,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	116 serial_xmt_char,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	117 serial_rcv_char,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	118 serial_indicate_status);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	119 # else
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 20 diff changeset	120 SERIAL_CALLBACKS(cyg_io_serial_callbacks,
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	121 serial_init,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	122 serial_xmt_char,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	123 serial_rcv_char);
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	124 # endif
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	125 #endif
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	126
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	127 // ---------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	128
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	129 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	130
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	131 static __inline__ void
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	132 throttle_tx( serial_channel *chan )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	133 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	134 chan->flow_desc.flags \|= CYG_SERIAL_FLOW_OUT_THROTTLED;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	135 // the throttling itself occurs in the serial_xmt_char() callback
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	136 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	137
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	138 static __inline__ void
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	139 restart_tx( serial_channel *chan )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	140 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	141 serial_funs *funs = chan->funs;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	142
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	143 chan->flow_desc.flags &= ~CYG_SERIAL_FLOW_OUT_THROTTLED;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	144
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	145 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	146 // See if there is now enough room to say it is available
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	147 // for writing
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	148 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	149 cbuf_t *cbuf = &chan->out_cbuf;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	150 int space;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	151
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	152 space = cbuf->len - cbuf->nb;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	153 if (space >= cbuf->low_water)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	154 cyg_selwakeup( &cbuf->selinfo );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	155 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	156 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	157 if ( chan->out_cbuf.nb > 0 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	158 (funs->start_xmit)(chan);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	159 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	160
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	161 static __inline__ void
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	162 throttle_rx( serial_channel *chan, cyg_bool force )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	163 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	164 serial_funs *funs = chan->funs;
1214 349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	165 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	166 cyg_uint32 prev_flags = chan->flow_desc.flags;
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	167 #endif
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	168
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	169 chan->flow_desc.flags \|= CYG_SERIAL_FLOW_IN_THROTTLED;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	170 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
1214 349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	171 // send an xoff if not already done (throttled)
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	172 if ( force \|\|
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	173 ((chan->config.flags & CYGNUM_SERIAL_FLOW_XONXOFF_RX) &&
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	174 (0==(prev_flags & CYG_SERIAL_FLOW_IN_THROTTLED))) ) {
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	175 CYG_ASSERT(force\|\|(chan->flow_desc.xchar=='\0')\|\|(chan->flow_desc.xchar==CYGDAT_IO_SERIAL_FLOW_CONTROL_XOFF_CHAR), "xchar already set (XOFF)");
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	176 chan->flow_desc.xchar = CYGDAT_IO_SERIAL_FLOW_CONTROL_XOFF_CHAR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	177 // Make sure xmit is running so we can send it
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	178 (funs->start_xmit)(chan);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	179 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	180 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	181 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_HW
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	182 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	183 cyg_uint32 i=1;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	184 cyg_uint32 len = sizeof(i);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	185
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	186 // set hardware flow control - don't care if it fails
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	187 if ( force \|\| (chan->config.flags & CYGNUM_SERIAL_FLOW_RTSCTS_RX) \|\|
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	188 (chan->config.flags & CYGNUM_SERIAL_FLOW_DSRDTR_RX) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	189 (funs->set_config)(chan,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	190 CYG_IO_SET_CONFIG_SERIAL_HW_RX_FLOW_THROTTLE,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	191 &i, &len);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	192 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	193 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	194 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	195
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	196 static __inline__ void
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	197 restart_rx( serial_channel *chan, cyg_bool force )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	198 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	199 serial_funs *funs = chan->funs;
1214 349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	200 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	201 cyg_uint32 prev_flags = chan->flow_desc.flags;
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	202 #endif
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	203
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	204 chan->flow_desc.flags &= ~CYG_SERIAL_FLOW_IN_THROTTLED;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	205 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
1214 349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	206 // send an xon, if we haven't already
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	207 if ( force \|\|
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	208 ((chan->config.flags & CYGNUM_SERIAL_FLOW_XONXOFF_RX) &&
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	209 (prev_flags & CYG_SERIAL_FLOW_IN_THROTTLED)) ) {
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	210 CYG_ASSERT(force\|\|(chan->flow_desc.xchar=='\0')\|\|(chan->flow_desc.xchar==CYGDAT_IO_SERIAL_FLOW_CONTROL_XON_CHAR), "xchar already set (XON)");
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	211 chan->flow_desc.xchar = CYGDAT_IO_SERIAL_FLOW_CONTROL_XON_CHAR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	212 (funs->start_xmit)(chan); // Make sure xmit is running so we can send it
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	213 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	214 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	215 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_HW
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	216 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	217 cyg_uint32 i=0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	218 cyg_uint32 len = sizeof(i);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	219
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	220 // set hardware flow control - don't care if it fails
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	221 if ( force \|\| (chan->config.flags & CYGNUM_SERIAL_FLOW_RTSCTS_RX) \|\|
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	222 (chan->config.flags & CYGNUM_SERIAL_FLOW_DSRDTR_RX) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	223 (funs->set_config)(chan,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	224 CYG_IO_SET_CONFIG_SERIAL_HW_RX_FLOW_THROTTLE,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	225 &i, &len);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	226 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	227 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	228 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	229
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	230 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	231
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	232 // ---------------------------------------------------------------------------
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	233
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	234 static void
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	235 serial_init(serial_channel *chan)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	236 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	237 if (chan->init) return;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	238 if (chan->out_cbuf.len != 0) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	239 #ifdef CYGDBG_IO_INIT
1976 8438b097ea3b * src/common/serial.c (serial_init): Fix compiler warnings about asl parents: 1477 diff changeset	240 diag_printf("Set output buffer - buf: %p len: %d\n", chan->out_cbuf.data, chan->out_cbuf.len);
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	241 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	242 chan->out_cbuf.waiting = false;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	243 chan->out_cbuf.abort = false;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	244 #ifdef CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	245 chan->out_cbuf.blocking = true;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	246 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	247 chan->out_cbuf.pending = 0;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	248 cyg_drv_mutex_init(&chan->out_cbuf.lock);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	249 cyg_drv_cond_init(&chan->out_cbuf.wait, &chan->out_cbuf.lock);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	250 chan->out_cbuf.low_water = chan->out_cbuf.len / 4;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	251 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	252 cyg_selinit( &chan->out_cbuf.selinfo );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	253 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	254 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	255 if (chan->in_cbuf.len != 0) {
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	256 cbuf_t *cbuf = &chan->in_cbuf;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	257
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	258 #ifdef CYGDBG_IO_INIT
1976 8438b097ea3b * src/common/serial.c (serial_init): Fix compiler warnings about asl parents: 1477 diff changeset	259 diag_printf("Set input buffer - buf: %p len: %d\n", cbuf->data, cbuf->len);
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	260 #endif
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	261 cbuf->waiting = false;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	262 cbuf->abort = false;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	263 #ifdef CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	264 cbuf->blocking = true;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	265 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	266 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	267 cyg_selinit( &cbuf->selinfo );
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	268 #endif
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	269 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	270 cbuf->low_water =
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	271 (CYGNUM_IO_SERIAL_FLOW_CONTROL_LOW_WATER_PERCENT * cbuf->len) / 100;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	272 cbuf->high_water =
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	273 (CYGNUM_IO_SERIAL_FLOW_CONTROL_HIGH_WATER_PERCENT * cbuf->len) / 100;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	274 # ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	275 // But make sure it is at least 35 below buffer size, to allow
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	276 // for 16 byte fifos, twice, plus some latency before s/w flow
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	277 // control can kick in. This doesn't apply to h/w flow control
1214 349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	278 // as it is near-instantaneous
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	279 if ( (cbuf->len - cbuf->high_water) < 35 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	280 cbuf->high_water = cbuf->len - 35;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	281 // and just in case...
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	282 if ( cbuf->high_water <= 0 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	283 cbuf->high_water = 1;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	284 if ( cbuf->low_water > cbuf->high_water )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	285 cbuf->low_water = cbuf->high_water;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	286 # endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	287 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	288 cyg_drv_mutex_init(&cbuf->lock);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	289 cyg_drv_cond_init(&cbuf->wait, &cbuf->lock);
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	290 }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	291 #ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	292 chan->status_callback = NULL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	293 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	294
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	295 #ifdef CYGDBG_USE_ASSERTS
138 289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT jlarmour parents: 130 diff changeset	296 #if CYGINT_IO_SERIAL_BLOCK_TRANSFER
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	297 chan->in_cbuf.block_mode_xfer_running = false;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	298 chan->out_cbuf.block_mode_xfer_running = false;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	299 #endif // CYGINT_IO_SERIAL_BLOCK_TRANSFER
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	300 #endif // CYGDBG_USE_ASSERTS
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	301 chan->init = true;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	302 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	303
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	304 // ---------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	305
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	306 static Cyg_ErrNo
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	307 serial_write(cyg_io_handle_t handle, const void _buf, cyg_uint32 len)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	308 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	309 cyg_devtab_entry_t t = (cyg_devtab_entry_t )handle;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	310 serial_channel chan = (serial_channel )t->priv;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	311 serial_funs *funs = chan->funs;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	312 cyg_int32 size = *len;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	313 cyg_uint8 buf = (cyg_uint8 )_buf;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	314 int next;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	315 cbuf_t *cbuf = &chan->out_cbuf;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	316 Cyg_ErrNo res = ENOERR;
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	317
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	318 cyg_drv_mutex_lock(&cbuf->lock);
4 1d7f19c9e4d1 Merge from eCos master repository on 1999-05-11-21:11:10-BST jlarmour parents: 2 diff changeset	319 cbuf->abort = false;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	320
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	321 if (cbuf->len == 0) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	322 // Non interrupt driven (i.e. polled) operation
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	323 while (size-- > 0) {
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	324 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
1214 349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	325 while ( ( 0 != (chan->flow_desc.flags & CYG_SERIAL_FLOW_OUT_THROTTLED) ) \|\|
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	326 ((funs->putc)(chan, *buf) == false) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	327 ; // Ignore full, keep trying
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	328 #else
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	329 while ((funs->putc)(chan, *buf) == false)
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	330 ; // Ignore full, keep trying
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	331 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	332 buf++;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	333 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	334 } else {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	335 cyg_drv_dsr_lock(); // Avoid race condition testing pointers
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	336 while (size > 0) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	337 next = cbuf->put + 1;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	338 if (next == cbuf->len) next = 0;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	339 if (cbuf->nb == cbuf->len) {
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	340 cbuf->waiting = true;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	341 // Buffer full - wait for space
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	342 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	343 if ( 0 == (chan->flow_desc.flags & CYG_SERIAL_FLOW_OUT_THROTTLED) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	344 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	345 (funs->start_xmit)(chan); // Make sure xmit is running
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	346
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	347 // Check flag: 'start_xmit' may have obviated the need
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	348 // to wait :-)
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 20 diff changeset	349 if (cbuf->waiting) {
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	350 #ifdef CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	351 // Optionally return if configured for non-blocking mode.
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	352 if (!cbuf->blocking) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	353 *len -= size; // number of characters actually sent
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	354 cbuf->waiting = false;
1477 b300f8978722 * src/common/serial.c: serial_write() was returning an incorrect asl parents: 1214 diff changeset	355 res = (*len == 0) ? -EAGAIN : ENOERR;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	356 break;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	357 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	358 #endif // CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 20 diff changeset	359 cbuf->pending += size; // Have this much more to send [eventually]
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	360 if( !cyg_drv_cond_wait(&cbuf->wait) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	361 cbuf->abort = true;
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 20 diff changeset	362 cbuf->pending -= size;
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 20 diff changeset	363 }
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	364 if (cbuf->abort) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	365 // Give up!
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	366 *len -= size; // number of characters actually sent
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	367 cbuf->abort = false;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	368 cbuf->waiting = false;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	369 res = -EINTR;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	370 break;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	371 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	372 } else {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	373 cbuf->data[cbuf->put++] = *buf++;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	374 cbuf->put = next;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	375 cbuf->nb++;
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	376 size--; // Only count if actually sent!
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	377 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	378 }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	379 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	380 if ( 0 == (chan->flow_desc.flags & CYG_SERIAL_FLOW_OUT_THROTTLED) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	381 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	382 (funs->start_xmit)(chan); // Start output as necessary
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	383 cyg_drv_dsr_unlock();
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	384 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	385 cyg_drv_mutex_unlock(&cbuf->lock);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	386 return res;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	387 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	388
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	389
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	390 // ---------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	391
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	392 static Cyg_ErrNo
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	393 serial_read(cyg_io_handle_t handle, void _buf, cyg_uint32 len)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	394 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	395 cyg_devtab_entry_t t = (cyg_devtab_entry_t )handle;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	396 serial_channel chan = (serial_channel )t->priv;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	397 serial_funs *funs = chan->funs;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	398 cyg_uint8 buf = (cyg_uint8 )_buf;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	399 cyg_int32 size = 0;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	400 cbuf_t *cbuf = &chan->in_cbuf;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	401 Cyg_ErrNo res = ENOERR;
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	402 #ifdef XX_CYGDBG_DIAG_BUF
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	403 extern int enable_diag_uart;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	404 int _enable = enable_diag_uart;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	405 int _time, _stime;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	406 externC cyg_tick_count_t cyg_current_time(void);
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	407 #endif // CYGDBG_DIAG_BUF
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	408
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	409 cyg_drv_mutex_lock(&cbuf->lock);
4 1d7f19c9e4d1 Merge from eCos master repository on 1999-05-11-21:11:10-BST jlarmour parents: 2 diff changeset	410 cbuf->abort = false;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	411
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	412 if (cbuf->len == 0) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	413 // Non interrupt driven (i.e. polled) operation
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	414 while (size++ < *len) {
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	415 cyg_uint8 c = (funs->getc)(chan);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	416 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	417 // for software flow control, if the driver returns one of the
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	418 // characters we act on it and then drop it (the app must not
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	419 // see it)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	420 if ( chan->config.flags & CYGNUM_SERIAL_FLOW_XONXOFF_TX ) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	421 if ( c == CYGDAT_IO_SERIAL_FLOW_CONTROL_XOFF_CHAR ) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	422 throttle_tx( chan );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	423 } else if ( c == CYGDAT_IO_SERIAL_FLOW_CONTROL_XON_CHAR ) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	424 restart_tx( chan );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	425 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	426 else
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	427 *buf++ = c;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	428 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	429 else
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	430 *buf++ = c;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	431 #else
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	432 *buf++ = c;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	433 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	434 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	435 } else {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	436 cyg_drv_dsr_lock(); // Avoid races
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	437 while (size < *len) {
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	438 if (cbuf->nb > 0) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	439 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	440 if ( (cbuf->nb <= cbuf->low_water) &&
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	441 (chan->flow_desc.flags & CYG_SERIAL_FLOW_IN_THROTTLED) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	442 restart_rx( chan, false );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	443 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	444 *buf++ = cbuf->data[cbuf->get];
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	445 if (++cbuf->get == cbuf->len) cbuf->get = 0;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	446 cbuf->nb--;
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	447 size++;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	448 } else {
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	449 #ifdef CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	450 if (!cbuf->blocking) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	451 *len = size; // characters actually read
868 61bd80311015 Fix typo - ENOERROR must be ENOERR gthomas parents: 864 diff changeset	452 res = size == 0 ? -EAGAIN : ENOERR;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	453 break;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	454 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	455 #endif // CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	456 cbuf->waiting = true;
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	457 #ifdef XX_CYGDBG_DIAG_BUF
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	458 enable_diag_uart = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	459 HAL_CLOCK_READ(&_time);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	460 _stime = (int)cyg_current_time();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	461 diag_printf("READ wait - get: %d, put: %d, time: %x.%x\n", cbuf->get, cbuf->put, _stime, _time);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	462 enable_diag_uart = _enable;
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	463 #endif // CYGDBG_DIAG_BUF
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	464 if( !cyg_drv_cond_wait(&cbuf->wait) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	465 cbuf->abort = true;
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	466 #ifdef XX_CYGDBG_DIAG_BUF
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	467 enable_diag_uart = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	468 HAL_CLOCK_READ(&_time);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	469 _stime = (int)cyg_current_time();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	470 diag_printf("READ continue - get: %d, put: %d, time: %x.%x\n", cbuf->get, cbuf->put, _stime, _time);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	471 enable_diag_uart = _enable;
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	472 #endif // CYGDBG_DIAG_BUF
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	473 if (cbuf->abort) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	474 // Give up!
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	475 *len = size; // characters actually read
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	476 cbuf->abort = false;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	477 cbuf->waiting = false;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	478 res = -EINTR;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	479 break;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	480 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	481 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	482 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	483 cyg_drv_dsr_unlock();
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	484 }
82 6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 66 diff changeset	485 #ifdef XX_CYGDBG_DIAG_BUF
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	486 cyg_drv_isr_lock();
82 6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 66 diff changeset	487 enable_diag_uart = 0;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 66 diff changeset	488 HAL_CLOCK_READ(&_time);
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 66 diff changeset	489 _stime = (int)cyg_current_time();
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 66 diff changeset	490 diag_printf("READ done - size: %d, len: %d, time: %x.%x\n", size, *len, _stime, _time);
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 66 diff changeset	491 enable_diag_uart = _enable;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 66 diff changeset	492 cyg_drv_isr_unlock();
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	493 #endif // CYGDBG_DIAG_BUF
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	494 cyg_drv_mutex_unlock(&cbuf->lock);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	495 return res;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	496 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	497
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	498
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	499 // ---------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	500
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	501 static cyg_bool
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	502 serial_select(cyg_io_handle_t handle, cyg_uint32 which, CYG_ADDRWORD info)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	503 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	504 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	505
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	506 cyg_devtab_entry_t t = (cyg_devtab_entry_t )handle;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	507 serial_channel chan = (serial_channel )t->priv;
1992 ec8b69673c6e * src/common/serial.c (serial_select): Lock DSRs inside asl parents: 1976 diff changeset	508 cyg_bool retval = false;
ec8b69673c6e * src/common/serial.c (serial_select): Lock DSRs inside asl parents: 1976 diff changeset	509
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	510 switch( which )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	511 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	512 case CYG_FREAD:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	513 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	514 cbuf_t *cbuf = &chan->in_cbuf;
2004 d3a8cc4f7931 * src/common/serial.c (serial_select): Swap the DSR locks and asl parents: 1992 diff changeset	515
1992 ec8b69673c6e * src/common/serial.c (serial_select): Lock DSRs inside asl parents: 1976 diff changeset	516 cyg_drv_mutex_lock(&cbuf->lock);
2004 d3a8cc4f7931 * src/common/serial.c (serial_select): Swap the DSR locks and asl parents: 1992 diff changeset	517 cyg_drv_dsr_lock(); // Avoid races
1992 ec8b69673c6e * src/common/serial.c (serial_select): Lock DSRs inside asl parents: 1976 diff changeset	518
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	519 // Check for data in the input buffer. If there is none,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	520 // register the select operation, otherwise return true.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	521
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	522 if( cbuf->nb == 0 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	523 cyg_selrecord( info, &cbuf->selinfo );
1992 ec8b69673c6e * src/common/serial.c (serial_select): Lock DSRs inside asl parents: 1976 diff changeset	524 else retval = true;
2004 d3a8cc4f7931 * src/common/serial.c (serial_select): Swap the DSR locks and asl parents: 1992 diff changeset	525
d3a8cc4f7931 * src/common/serial.c (serial_select): Swap the DSR locks and asl parents: 1992 diff changeset	526 cyg_drv_dsr_unlock();
d3a8cc4f7931 * src/common/serial.c (serial_select): Swap the DSR locks and asl parents: 1992 diff changeset	527 cyg_drv_mutex_unlock(&cbuf->lock);
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	528 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	529 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	530
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	531 case CYG_FWRITE:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	532 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	533 // Check for space in the output buffer. If there is none,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	534 // register the select operation, otherwise return true.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	535
2004 d3a8cc4f7931 * src/common/serial.c (serial_select): Swap the DSR locks and asl parents: 1992 diff changeset	536 int space ;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	537 cbuf_t *cbuf = &chan->out_cbuf;
2004 d3a8cc4f7931 * src/common/serial.c (serial_select): Swap the DSR locks and asl parents: 1992 diff changeset	538
1992 ec8b69673c6e * src/common/serial.c (serial_select): Lock DSRs inside asl parents: 1976 diff changeset	539 cyg_drv_mutex_lock(&cbuf->lock);
2004 d3a8cc4f7931 * src/common/serial.c (serial_select): Swap the DSR locks and asl parents: 1992 diff changeset	540 cyg_drv_dsr_lock(); // Avoid races
d3a8cc4f7931 * src/common/serial.c (serial_select): Swap the DSR locks and asl parents: 1992 diff changeset	541
d3a8cc4f7931 * src/common/serial.c (serial_select): Swap the DSR locks and asl parents: 1992 diff changeset	542 space = cbuf->len - cbuf->nb;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	543 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	544 if ( (space < cbuf->low_water) \|\|
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	545 (chan->flow_desc.flags & CYG_SERIAL_FLOW_OUT_THROTTLED) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	546 cyg_selrecord( info, &cbuf->selinfo );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	547 #else
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	548 if (space < cbuf->low_water)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	549 cyg_selrecord( info, &cbuf->selinfo );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	550 #endif
1992 ec8b69673c6e * src/common/serial.c (serial_select): Lock DSRs inside asl parents: 1976 diff changeset	551 else retval = true;
2004 d3a8cc4f7931 * src/common/serial.c (serial_select): Swap the DSR locks and asl parents: 1992 diff changeset	552
d3a8cc4f7931 * src/common/serial.c (serial_select): Swap the DSR locks and asl parents: 1992 diff changeset	553 cyg_drv_dsr_unlock();
1992 ec8b69673c6e * src/common/serial.c (serial_select): Lock DSRs inside asl parents: 1976 diff changeset	554 cyg_drv_mutex_unlock(&cbuf->lock);
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	555 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	556 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	557
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	558 case 0: // exceptions - none supported
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	559 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	560 }
1992 ec8b69673c6e * src/common/serial.c (serial_select): Lock DSRs inside asl parents: 1976 diff changeset	561 return retval;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	562 #else
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	563
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	564 // With no select support, we simply return true.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	565 return true;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	566 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	567 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	568
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	569
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	570 // ---------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	571
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	572 static Cyg_ErrNo
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	573 serial_get_config(cyg_io_handle_t handle, cyg_uint32 key, void *xbuf,
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	574 cyg_uint32 *len)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	575 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	576 cyg_devtab_entry_t t = (cyg_devtab_entry_t )handle;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	577 serial_channel chan = (serial_channel )t->priv;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	578 cyg_serial_info_t buf = (cyg_serial_info_t )xbuf;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	579 Cyg_ErrNo res = ENOERR;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	580 cbuf_t *out_cbuf = &chan->out_cbuf;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	581 cbuf_t *in_cbuf = &chan->in_cbuf;
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	582 serial_funs *funs = chan->funs;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	583
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	584 switch (key) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	585 case CYG_IO_GET_CONFIG_SERIAL_INFO:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	586 if (*len < sizeof(cyg_serial_info_t)) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	587 return -EINVAL;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	588 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	589 *buf = chan->config;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	590 *len = sizeof(chan->config);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	591 break;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	592
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	593 case CYG_IO_GET_CONFIG_SERIAL_BUFFER_INFO:
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	594 // return rx/tx buffer sizes and counts
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	595 {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	596 cyg_serial_buf_info_t *p;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	597 if (*len < sizeof(cyg_serial_buf_info_t))
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	598 return -EINVAL;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	599
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	600 *len = sizeof(cyg_serial_buf_info_t);
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	601 p = (cyg_serial_buf_info_t *)xbuf;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	602
88 afdeb44241de Merge from eCos master repository on 2000-05-12-07:47:04-BST jlarmour parents: 86 diff changeset	603 p->rx_bufsize = in_cbuf->len;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	604 if (p->rx_bufsize)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	605 p->rx_count = in_cbuf->nb;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	606 else
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	607 p->rx_count = 0;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	608
88 afdeb44241de Merge from eCos master repository on 2000-05-12-07:47:04-BST jlarmour parents: 86 diff changeset	609 p->tx_bufsize = out_cbuf->len;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	610 if (p->tx_bufsize)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	611 p->tx_count = out_cbuf->nb;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	612 else
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	613 p->tx_count = 0;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	614 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	615 break;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	616
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	617 case CYG_IO_GET_CONFIG_SERIAL_OUTPUT_DRAIN:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	618 // Wait for any pending output to complete
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	619 if (out_cbuf->len == 0) break; // Nothing to do if not buffered
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	620 cyg_drv_mutex_lock(&out_cbuf->lock); // Stop any further output processing
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	621 cyg_drv_dsr_lock();
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	622 while (out_cbuf->pending \|\| (out_cbuf->nb > 0)) {
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	623 out_cbuf->waiting = true;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	624 if(!cyg_drv_cond_wait(&out_cbuf->wait) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	625 res = -EINTR;
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	626 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	627 cyg_drv_dsr_unlock();
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	628 cyg_drv_mutex_unlock(&out_cbuf->lock);
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	629 break;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	630
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	631 case CYG_IO_GET_CONFIG_SERIAL_INPUT_FLUSH:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	632 // Flush any buffered input
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	633 if (in_cbuf->len == 0) break; // Nothing to do if not buffered
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	634 cyg_drv_mutex_lock(&in_cbuf->lock); // Stop any further input processing
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	635 cyg_drv_dsr_lock();
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	636 if (in_cbuf->waiting) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	637 in_cbuf->abort = true;
1054 c706e0d163d7 * src/common/serial.c: Changed all calls to cyg_drv_cond_signal() nickg parents: 1035 diff changeset	638 cyg_drv_cond_broadcast(&in_cbuf->wait);
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	639 in_cbuf->waiting = false;
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	640 }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	641 in_cbuf->get = in_cbuf->put = in_cbuf->nb = 0; // Flush buffered input
864 c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH jlarmour parents: 852 diff changeset	642
c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH jlarmour parents: 852 diff changeset	643 // Pass to the hardware driver in case it wants to flush FIFOs etc.
c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH jlarmour parents: 852 diff changeset	644 (funs->set_config)(chan,
c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH jlarmour parents: 852 diff changeset	645 CYG_IO_SET_CONFIG_SERIAL_INPUT_FLUSH,
c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH jlarmour parents: 852 diff changeset	646 NULL, NULL);
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	647 cyg_drv_dsr_unlock();
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	648 cyg_drv_mutex_unlock(&in_cbuf->lock);
1035 f81e485de35c Restart RX after flush gthomas parents: 868 diff changeset	649 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
f81e485de35c Restart RX after flush gthomas parents: 868 diff changeset	650 // Restart receiver if it was shutdown
f81e485de35c Restart RX after flush gthomas parents: 868 diff changeset	651 if ((chan->flow_desc.flags & CYG_SERIAL_FLOW_IN_THROTTLED) != 0) {
f81e485de35c Restart RX after flush gthomas parents: 868 diff changeset	652 restart_rx( chan, false );
f81e485de35c Restart RX after flush gthomas parents: 868 diff changeset	653 }
f81e485de35c Restart RX after flush gthomas parents: 868 diff changeset	654 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	655 break;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	656
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	657 case CYG_IO_GET_CONFIG_SERIAL_ABORT:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	658 // Abort any outstanding I/O, including blocked reads
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	659 // Caution - assumed to be called from 'timeout' (i.e. DSR) code
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	660 if (in_cbuf->len != 0) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	661 in_cbuf->abort = true;
1054 c706e0d163d7 * src/common/serial.c: Changed all calls to cyg_drv_cond_signal() nickg parents: 1035 diff changeset	662 cyg_drv_cond_broadcast(&in_cbuf->wait);
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	663 }
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	664 if (out_cbuf->len != 0) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	665 out_cbuf->abort = true;
1054 c706e0d163d7 * src/common/serial.c: Changed all calls to cyg_drv_cond_signal() nickg parents: 1035 diff changeset	666 cyg_drv_cond_broadcast(&out_cbuf->wait);
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	667 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	668 break;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	669
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	670 case CYG_IO_GET_CONFIG_SERIAL_OUTPUT_FLUSH:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	671 // Throw away any pending output
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	672 if (out_cbuf->len == 0) break; // Nothing to do if not buffered
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	673 cyg_drv_mutex_lock(&out_cbuf->lock); // Stop any further output processing
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	674 cyg_drv_dsr_lock();
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	675 if (out_cbuf->nb > 0) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	676 out_cbuf->get = out_cbuf->put = out_cbuf->nb = 0; // Empties queue!
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	677 (funs->stop_xmit)(chan); // Done with transmit
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	678 }
864 c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH jlarmour parents: 852 diff changeset	679 // Pass to the hardware driver in case it wants to flush FIFOs etc.
c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH jlarmour parents: 852 diff changeset	680 (funs->set_config)(chan,
c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH jlarmour parents: 852 diff changeset	681 CYG_IO_SET_CONFIG_SERIAL_OUTPUT_FLUSH,
c398056d144d * src/common/serial.c (serial_get_config): For both INPUT_FLUSH jlarmour parents: 852 diff changeset	682 NULL, NULL);
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	683 if (out_cbuf->waiting) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	684 out_cbuf->abort = true;
1054 c706e0d163d7 * src/common/serial.c: Changed all calls to cyg_drv_cond_signal() nickg parents: 1035 diff changeset	685 cyg_drv_cond_broadcast(&out_cbuf->wait);
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	686 out_cbuf->waiting = false;
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	687 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	688 cyg_drv_dsr_unlock();
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	689 cyg_drv_mutex_unlock(&out_cbuf->lock);
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	690 break;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	691
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	692 #ifdef CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	693 case CYG_IO_GET_CONFIG_READ_BLOCKING:
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	694 if (*len < sizeof(cyg_uint32)) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	695 return -EINVAL;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	696 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	697 (cyg_uint32)xbuf = (in_cbuf->blocking) ? 1 : 0;
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	698 break;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	699
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	700 case CYG_IO_GET_CONFIG_WRITE_BLOCKING:
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	701 if (*len < sizeof(cyg_uint32)) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	702 return -EINVAL;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	703 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	704 (cyg_uint32)xbuf = (out_cbuf->blocking) ? 1 : 0;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	705 break;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	706 #endif // CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	707
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	708 default:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	709 res = -EINVAL;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	710 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	711 return res;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	712 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	713
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	714
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	715 // ---------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	716
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	717 static Cyg_ErrNo
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	718 serial_set_config(cyg_io_handle_t handle, cyg_uint32 key, const void *xbuf,
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	719 cyg_uint32 *len)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	720 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	721 Cyg_ErrNo res = ENOERR;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	722 cyg_devtab_entry_t t = (cyg_devtab_entry_t )handle;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	723 serial_channel chan = (serial_channel )t->priv;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	724 #ifdef CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	725 cbuf_t *out_cbuf = &chan->out_cbuf;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	726 cbuf_t *in_cbuf = &chan->in_cbuf;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	727 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	728 serial_funs *funs = chan->funs;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	729
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	730 switch (key) {
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	731 #ifdef CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	732 case CYG_IO_SET_CONFIG_READ_BLOCKING:
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	733 if (*len < sizeof(cyg_uint32) \|\| 0 == in_cbuf->len) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	734 return -EINVAL;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	735 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	736 in_cbuf->blocking = (1 == (cyg_uint32)xbuf) ? true : false;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	737 break;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	738 case CYG_IO_SET_CONFIG_WRITE_BLOCKING:
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	739 if (*len < sizeof(cyg_uint32) \|\| 0 == out_cbuf->len) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	740 return -EINVAL;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	741 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	742 out_cbuf->blocking = (1 == (cyg_uint32)xbuf) ? true : false;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	743 break;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	744 #endif // CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	745
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	746 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	747 case CYG_IO_SET_CONFIG_SERIAL_FLOW_CONTROL_METHOD:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	748 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	749 cyg_uint32 f = (cyg_uint32 )xbuf;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	750
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	751 if (len < sizeof(f))
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	752 return -EINVAL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	753
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	754 cyg_drv_dsr_lock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	755
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	756 chan->config.flags &= ~(CYGNUM_SERIAL_FLOW_XONXOFF_RX\|
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	757 CYGNUM_SERIAL_FLOW_XONXOFF_TX\|
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	758 CYGNUM_SERIAL_FLOW_RTSCTS_RX\|
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	759 CYGNUM_SERIAL_FLOW_RTSCTS_TX\|
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	760 CYGNUM_SERIAL_FLOW_DSRDTR_RX\|
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	761 CYGNUM_SERIAL_FLOW_DSRDTR_TX);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	762 chan->config.flags \|= (*f & (
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	763 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	764 CYGNUM_SERIAL_FLOW_XONXOFF_RX\|
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	765 CYGNUM_SERIAL_FLOW_XONXOFF_TX\|
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	766 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	767 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_HW
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	768 CYGNUM_SERIAL_FLOW_RTSCTS_RX\|
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	769 CYGNUM_SERIAL_FLOW_RTSCTS_TX\|
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	770 CYGNUM_SERIAL_FLOW_DSRDTR_RX\|
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	771 CYGNUM_SERIAL_FLOW_DSRDTR_TX\|
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	772 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	773 0));
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	774 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_HW
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	775 // up to hardware driver to clear flags if rejected
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	776 res = (funs->set_config)(chan,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	777 CYG_IO_SET_CONFIG_SERIAL_HW_FLOW_CONFIG,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	778 NULL, NULL);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	779 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	780 cyg_drv_dsr_unlock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	781 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	782 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	783
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	784 case CYG_IO_SET_CONFIG_SERIAL_FLOW_CONTROL_FORCE:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	785 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	786 cyg_uint32 f = (cyg_uint32 )xbuf;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	787
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	788 if (len < sizeof(f))
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	789 return -EINVAL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	790
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	791 cyg_drv_dsr_lock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	792 switch (*f) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	793 case CYGNUM_SERIAL_FLOW_THROTTLE_RX:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	794 throttle_rx( chan, true );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	795 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	796 case CYGNUM_SERIAL_FLOW_RESTART_RX:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	797 restart_rx( chan, true );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	798 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	799 case CYGNUM_SERIAL_FLOW_THROTTLE_TX:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	800 throttle_tx( chan );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	801 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	802 case CYGNUM_SERIAL_FLOW_RESTART_TX:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	803 restart_tx( chan );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	804 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	805 default:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	806 res = -EINVAL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	807 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	808 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	809 cyg_drv_dsr_unlock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	810 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	811 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	812 #endif // CYGPKG_IO_SERIAL_FLOW_CONTROL
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	813
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	814 #ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	815 case CYG_IO_SET_CONFIG_SERIAL_STATUS_CALLBACK:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	816 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	817 cyg_serial_line_status_callback_fn_t newfn;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	818 CYG_ADDRWORD newpriv;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	819 cyg_serial_line_status_callback_t *tmp =
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	820 (cyg_serial_line_status_callback_t *)xbuf;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	821
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	822 if ( len < sizeof(tmp) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	823 return -EINVAL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	824
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	825 newfn = tmp->fn;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	826 newpriv = tmp->priv;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	827
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	828 // prevent callbacks while we do this
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	829 cyg_drv_dsr_lock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	830 // store old callbacks in same structure
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	831 tmp->fn = chan->status_callback;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	832 tmp->priv = chan->status_callback_priv;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	833 chan->status_callback = newfn;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	834 chan->status_callback_priv = newpriv;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	835 cyg_drv_dsr_unlock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	836 len = sizeof(tmp);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	837 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	838 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	839 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	840
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	841 default:
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	842 // pass down to lower layers
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	843 return (funs->set_config)(chan, key, xbuf, len);
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	844 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	845 return res;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	846 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	847
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	848 // ---------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	849
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	850 static void
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	851 serial_xmt_char(serial_channel *chan)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	852 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	853 cbuf_t *cbuf = &chan->out_cbuf;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	854 serial_funs *funs = chan->funs;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	855 unsigned char c;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	856 int space;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	857
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	858 #if CYGINT_IO_SERIAL_BLOCK_TRANSFER
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	859 CYG_ASSERT(false == cbuf->block_mode_xfer_running,
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	860 "Attempting char xmt while block transfer is running");
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	861 #endif
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	862 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	863 // if we are required to send an XON/XOFF char, send it before
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	864 // anything else
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	865 // FIXME: what if XON gets corrupted in transit to the other end?
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	866 // Should we resend XON even though the other end may not be wanting
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	867 // to send us stuff at this point?
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	868 if ( chan->config.flags & CYGNUM_SERIAL_FLOW_XONXOFF_RX ) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	869 if ( chan->flow_desc.xchar ) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	870 if ( (funs->putc)(chan, chan->flow_desc.xchar) ) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	871 chan->flow_desc.xchar = '\0';
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	872 } else { // otherwise there's no space and we have to wait
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	873 return;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	874 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	875 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	876 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	877 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	878 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	879 // if we're meant to be throttled, just stop and leave
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	880 if ( chan->flow_desc.flags & CYG_SERIAL_FLOW_OUT_THROTTLED ) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	881 (funs->stop_xmit)(chan); // Stop transmitting for now
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	882 return;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	883 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	884 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	885 while (cbuf->nb > 0) {
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	886 c = cbuf->data[cbuf->get];
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	887 if ((funs->putc)(chan, c)) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	888 cbuf->get++;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	889 if (cbuf->get == cbuf->len) cbuf->get = 0;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	890 cbuf->nb--;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	891 } else {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	892 // See if there is now enough room to restart writer
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	893 space = cbuf->len - cbuf->nb;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	894 if (space >= cbuf->low_water) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	895 if (cbuf->waiting) {
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	896 cbuf->waiting = false;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	897 cyg_drv_cond_broadcast(&cbuf->wait);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	898 }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	899 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	900 cyg_selwakeup( &cbuf->selinfo );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	901 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	902 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	903 return; // Need to wait for more space
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	904 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	905 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	906 (funs->stop_xmit)(chan); // Done with transmit
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	907
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	908 // must signal waiters, and wake up selecters for the case when
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	909 // this was the last char to be sent and they hadn't been signalled
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	910 // before (e.g. because of flow control)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	911 if (cbuf->waiting) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	912 cbuf->waiting = false;
1054 c706e0d163d7 * src/common/serial.c: Changed all calls to cyg_drv_cond_signal() nickg parents: 1035 diff changeset	913 cyg_drv_cond_broadcast(&cbuf->wait);
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	914 }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	915 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	916 cyg_selwakeup( &cbuf->selinfo );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	917 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	918 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	919
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	920 // ---------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	921
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	922 static void
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	923 serial_rcv_char(serial_channel *chan, unsigned char c)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	924 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	925 cbuf_t *cbuf = &chan->in_cbuf;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	926
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	927 #if CYGINT_IO_SERIAL_BLOCK_TRANSFER
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	928 CYG_ASSERT(false == cbuf->block_mode_xfer_running,
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	929 "Attempting char rcv while block transfer is running");
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	930 #endif
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	931 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	932 // for software flow control, if the driver returns one of the characters
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	933 // we act on it and then drop it (the app must not see it)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	934 if ( chan->config.flags & CYGNUM_SERIAL_FLOW_XONXOFF_TX ) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	935 if ( c == CYGDAT_IO_SERIAL_FLOW_CONTROL_XOFF_CHAR ) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	936 throttle_tx( chan );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	937 return; // it wasn't a "real" character
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	938 } else if ( c == CYGDAT_IO_SERIAL_FLOW_CONTROL_XON_CHAR ) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	939 restart_tx( chan );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	940 return; // it wasn't a "real" character
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	941 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	942 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	943 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	944 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	945 // If we've hit the high water mark, tell the other side to stop
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	946 if ( cbuf->nb >= cbuf->high_water ) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	947 throttle_rx( chan, false );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	948 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	949 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	950 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	951 // Wake up any pending selectors if we are about to
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	952 // put some data into a previously empty buffer.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	953 if( cbuf->nb == 0 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	954 cyg_selwakeup( &cbuf->selinfo );
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	955 #endif
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	956
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	957 // If the flow control is not enabled/sufficient and the buffer is
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	958 // already full, just throw new characters away.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	959
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	960 if ( cbuf->nb < cbuf->len ) {
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	961 cbuf->data[cbuf->put++] = c;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	962 if (cbuf->put == cbuf->len) cbuf->put = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	963 cbuf->nb++;
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	964 } // note trailing else
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	965 #ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	966 else {
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	967 // Overrun. Report the error.
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	968 cyg_serial_line_status_t stat;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	969 stat.which = CYGNUM_SERIAL_STATUS_OVERRUNERR;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	970 serial_indicate_status(chan, &stat);
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	971 }
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	972 #endif
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	973
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	974 if (cbuf->waiting) {
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	975 #ifdef XX_CYGDBG_DIAG_BUF
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	976 extern int enable_diag_uart;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	977 int _enable = enable_diag_uart;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	978 int _time, _stime;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	979 externC cyg_tick_count_t cyg_current_time(void);
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	980 enable_diag_uart = 0;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	981 HAL_CLOCK_READ(&_time);
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	982 _stime = (int)cyg_current_time();
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	983 diag_printf("Signal reader - time: %x.%x\n", _stime, _time);
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	984 enable_diag_uart = _enable;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	985 #endif // CYGDBG_DIAG_BUF
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	986 cbuf->waiting = false;
1054 c706e0d163d7 * src/common/serial.c: Changed all calls to cyg_drv_cond_signal() nickg parents: 1035 diff changeset	987 cyg_drv_cond_broadcast(&cbuf->wait);
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	988 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	989 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	990
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	991 //----------------------------------------------------------------------------
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	992 // Flow control indication callback
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	993
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	994 #ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	995 static void
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	996 serial_indicate_status(serial_channel chan, cyg_serial_line_status_t s )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	997 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	998 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	999 if ( CYGNUM_SERIAL_STATUS_FLOW == s->which ) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1000 if ( s->value )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1001 restart_tx( chan );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1002 else
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1003 throttle_tx( chan );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1004 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1005 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1006 if ( chan->status_callback )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1007 (*chan->status_callback)(s, chan->status_callback_priv);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1008 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1009 #endif // ifdef CYGOPT_IO_SERIAL_SUPPORT_LINE_STATUS
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1010
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1011 //----------------------------------------------------------------------------
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1012 // Block transfer functions. Not all drivers require these. Those that
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1013 // do must follow the required semantics:
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1014 //
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1015 // Attempt to transfer as much via the block transfer function as
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1016 // possible, _but_ if that fails, do the remaining bytes via the
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1017 // single-char function. That ensures that all policy decisions can be
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1018 // made in this driver, and not in the device driver.
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1019 //
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1020 // Note: if the driver uses DMA for transmission, an initial failing
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1021 // call to the xmt_req function must cause the start_xmit function to
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1022 // fall-back to regular CPU-interrupt based single-character
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1023 // transmission.
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1024
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1025 #if CYGINT_IO_SERIAL_BLOCK_TRANSFER
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1026
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1027 static rcv_req_reply_t
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1028 serial_data_rcv_req(serial_channel *chan, int avail,
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1029 int* space_avail, unsigned char** space)
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1030 {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1031 cbuf_t *cbuf = &chan->in_cbuf;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1032 int gap;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1033
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1034 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1035 // When there is software flow-control, force the serial device
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1036 // driver to use the single-char xmt/rcv functions, since these
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1037 // have to make policy decision based on the data. Rcv function
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1038 // may also have to transmit data to throttle the xmitter.
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1039 if (chan->config.flags & (CYGNUM_SERIAL_FLOW_XONXOFF_TX\|CYGNUM_SERIAL_FLOW_XONXOFF_RX))
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1040 return CYG_RCV_DISABLED;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1041 #endif
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1042
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1043 CYG_ASSERT(false == cbuf->block_mode_xfer_running,
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1044 "Attempting new block transfer while another is running");
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1045 // Check for space
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1046 gap = cbuf->nb;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1047 if (gap == cbuf->len)
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1048 return CYG_RCV_FULL;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1049
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1050 #ifdef CYGDBG_USE_ASSERTS
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1051 cbuf->block_mode_xfer_running = true;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1052 #endif
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1053
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1054 if (0 == gap) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1055 // Buffer is empty. Reset put/get indexes to get max transfer in
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1056 // one chunk.
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1057 cbuf->get = 0;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1058 cbuf->put = 0;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1059 gap = cbuf->len;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1060 } else {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1061 // Free space (G = get, P = put, x = data, . = empty)
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1062 // positive: xxxxP.....Gxxx
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1063 // negative: ..GxxxxxP..... [offer last chunk only]
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1064
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1065 // First try for a gap between put and get locations
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1066 gap = cbuf->get - cbuf->put;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1067 if (gap < 0) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1068 // If failed, the gap is between put and the end of buffer
107 7f461c3a372c Merge from eCos master repository on 2000-07-04-08:04:30-BST jlarmour parents: 88 diff changeset	1069 gap = cbuf->len - cbuf->put;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1070 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1071 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1072
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1073 if (avail < gap) gap = avail; // bound by what's available from hw
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1074
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1075 *space_avail = gap;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1076 *space = &cbuf->data[cbuf->put];
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1077
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1078 CYG_ASSERT((gap+cbuf->nb) <= cbuf->len, "Buffer will overflow");
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1079 CYG_ASSERT(cbuf->put < cbuf->len, "Invalid put ptr");
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1080 CYG_ASSERT(cbuf->get < cbuf->len, "Invalid get ptr");
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1081
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1082 return CYG_RCV_OK;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1083 }
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1084
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1085 static void
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1086 serial_data_rcv_done(serial_channel *chan, int chars_rcvd)
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1087 {
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1088 cbuf_t *cbuf = &chan->in_cbuf;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1089
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1090 cbuf->put += chars_rcvd;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1091 cbuf->nb += chars_rcvd;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1092
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1093 if (cbuf->put == cbuf->len) cbuf->put = 0;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1094
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1095 CYG_ASSERT(cbuf->nb <= cbuf->len, "Buffer overflow");
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1096 CYG_ASSERT(cbuf->put < cbuf->len, "Invalid put ptr");
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1097 CYG_ASSERT(cbuf->get < cbuf->len, "Invalid get ptr");
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1098
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1099 if (cbuf->waiting) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1100 cbuf->waiting = false;
1054 c706e0d163d7 * src/common/serial.c: Changed all calls to cyg_drv_cond_signal() nickg parents: 1035 diff changeset	1101 cyg_drv_cond_broadcast(&cbuf->wait);
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1102 }
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1103 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1104 // If we've hit the high water mark, tell the other side to stop
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1105 if ( cbuf->nb >= cbuf->high_water ) {
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1106 throttle_rx( chan, false );
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1107 }
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1108 #endif
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1109 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1110 // Wake up any pending selectors if we have
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1111 // put some data into a previously empty buffer.
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1112 if (chars_rcvd == cbuf->nb)
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1113 cyg_selwakeup( &cbuf->selinfo );
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1114 #endif
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1115
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1116 #ifdef CYGDBG_USE_ASSERTS
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1117 cbuf->block_mode_xfer_running = false;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1118 #endif
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1119 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1120
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1121 static xmt_req_reply_t
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1122 serial_data_xmt_req(serial_channel *chan, int space,
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1123 int* chars_avail, unsigned char** chars)
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1124 {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1125 cbuf_t *cbuf = &chan->out_cbuf;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1126 int avail;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1127
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1128 #ifdef CYGOPT_IO_SERIAL_FLOW_CONTROL_SOFTWARE
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1129 // When there is software flow-control, force the serial device
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1130 // driver to use the single-char xmt/rcv functions, since these
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1131 // have to make policy decision based on the data. Rcv function
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1132 // may also have to transmit data to throttle the xmitter.
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1133 if (chan->config.flags & (CYGNUM_SERIAL_FLOW_XONXOFF_TX\|CYGNUM_SERIAL_FLOW_XONXOFF_RX))
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1134 return CYG_XMT_DISABLED;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1135 #endif
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1136
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1137 CYG_ASSERT(false == cbuf->block_mode_xfer_running,
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1138 "Attempting new block transfer while another is running");
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1139
1214 349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	1140 #ifdef CYGPKG_IO_SERIAL_FLOW_CONTROL
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	1141 // if we're meant to be throttled, just stop and leave
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	1142 if ( chan->flow_desc.flags & CYG_SERIAL_FLOW_OUT_THROTTLED ) {
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	1143 (chan->funs->stop_xmit)(chan); // Stop transmitting for now
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	1144 return CYG_XMT_EMPTY;
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	1145 }
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	1146 #endif
349e2eadf98d * src/common/serial.c: Fixed bug for XON/XOFF flow control that jlarmour parents: 1190 diff changeset	1147
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1148 // Available data (G = get, P = put, x = data, . = empty)
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1149 // 0: no data
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1150 // negative: xxxxP.....Gxxx [offer last chunk only]
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1151 // positive: ..GxxxxxP.....
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1152 if (0 == cbuf->nb)
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1153 return CYG_XMT_EMPTY;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1154
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1155 #ifdef CYGDBG_USE_ASSERTS
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1156 cbuf->block_mode_xfer_running = true;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1157 #endif
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1158
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1159 if (cbuf->get >= cbuf->put) {
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1160 avail = cbuf->len - cbuf->get;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1161 } else {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1162 avail = cbuf->put - cbuf->get;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1163 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1164
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1165 if (avail > space) avail = space; // bound by space in hardware
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1166
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1167 *chars_avail = avail;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1168 *chars = &cbuf->data[cbuf->get];
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1169
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1170 CYG_ASSERT(avail <= cbuf->len, "Avail overflow");
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1171 CYG_ASSERT(cbuf->nb <= cbuf->len, "Buffer overflow");
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1172 CYG_ASSERT(cbuf->put < cbuf->len, "Invalid put ptr");
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1173 CYG_ASSERT(cbuf->get < cbuf->len, "Invalid get ptr");
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1174
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1175 return CYG_XMT_OK;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1176 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1177
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1178 static void
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1179 serial_data_xmt_done(serial_channel *chan, int chars_sent)
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1180 {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1181 cbuf_t *cbuf = &chan->out_cbuf;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1182 serial_funs *funs = chan->funs;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1183 int space;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1184
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1185 cbuf->get += chars_sent;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1186 cbuf->nb -= chars_sent;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1187
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1188 if (cbuf->get == cbuf->len) cbuf->get = 0;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1189
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1190 CYG_ASSERT(cbuf->nb <= cbuf->len, "Buffer overflow");
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1191 CYG_ASSERT(cbuf->nb >= 0, "Buffer underflow");
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1192 CYG_ASSERT(cbuf->put < cbuf->len, "Invalid put ptr");
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1193 CYG_ASSERT(cbuf->get < cbuf->len, "Invalid get ptr");
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1194
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1195 if (0 == cbuf->nb) {
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1196 (funs->stop_xmit)(chan); // Done with transmit
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1197 cbuf->get = cbuf->put = 0; // reset ptrs if empty
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1198 }
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1199
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1200 // See if there is now enough room to restart writer
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1201 space = cbuf->len - cbuf->nb;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1202 if (space >= cbuf->low_water) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1203 if (cbuf->waiting) {
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1204 cbuf->waiting = false;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1205 cyg_drv_cond_broadcast(&cbuf->wait);
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1206 }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1207 #ifdef CYGPKG_IO_SERIAL_SELECT_SUPPORT
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1208 cyg_selwakeup( &cbuf->selinfo );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1209 #endif
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1210 }
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1211
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1212 #ifdef CYGDBG_USE_ASSERTS
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1213 cbuf->block_mode_xfer_running = false;
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 115 diff changeset	1214 #endif
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1215 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1216
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	1217 #endif // CYGINT_IO_SERIAL_BLOCK_TRANSFER
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1218
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1219 // ---------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1220
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 107 diff changeset	1221 // EOF serial.c

Mercurial > ecos

annotate packages/io/serial/current/src/common/serial.c @ 3292:7f8e529b4d82 default tip