flash_v2: packages/io/serial/current/src/common/serial.c annotate

annotate packages/io/serial/current/src/common/serial.c @ 107:7f461c3a372c

Merge from eCos master repository on 2000-07-04-08:04:30-BST

author	jlarmour
date	Tue, 04 Jul 2000 07:34:17 +0000
parents	afdeb44241de
children	6ed91473a1cd

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 //==========================================================================
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	8 //####COPYRIGHTBEGIN####
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	9 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	10 // -------------------------------------------
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	11 // The contents of this file are subject to the Red Hat eCos Public License
66 bf00f99aec69 Merge from eCos master repository on 2000-02-02-19:16:44-GMT jlarmour parents: 64 diff changeset	12 // Version 1.1 (the "License"); you may not use this file except in
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	13 // compliance with the License. You may obtain a copy of the License at
66 bf00f99aec69 Merge from eCos master repository on 2000-02-02-19:16:44-GMT jlarmour parents: 64 diff changeset	14 // http://www.redhat.com/
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	15 //
66 bf00f99aec69 Merge from eCos master repository on 2000-02-02-19:16:44-GMT jlarmour parents: 64 diff changeset	16 // Software distributed under the License is distributed on an "AS IS"
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	18 // License for the specific language governing rights and limitations under
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	19 // the License.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	20 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	21 // The Original Code is eCos - Embedded Configurable Operating System,
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	22 // released September 30, 1998.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	23 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	24 // The Initial Developer of the Original Code is Red Hat.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	25 // Portions created by Red Hat are
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	27 // All Rights Reserved.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	28 // -------------------------------------------
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	29 //
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	30 //####COPYRIGHTEND####
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	31 //==========================================================================
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	32 //#####DESCRIPTIONBEGIN####
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	33 //
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	34 // Author(s): gthomas
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	35 // Contributors: gthomas, grante
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	36 // Date: 1999-02-04
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	37 // Purpose: Top level serial driver
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	38 // Description:
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 //####DESCRIPTIONEND####
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	41 //
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	42 //==========================================================================
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	43
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	44 #include <pkgconf/io.h>
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	45 #include <pkgconf/io_serial.h>
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	46
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	47 #include <cyg/io/io.h>
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	48 #include <cyg/io/devtab.h>
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	49 #include <cyg/io/serial.h>
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	50 #include <cyg/infra/diag.h>
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 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	53 static Cyg_ErrNo 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	54 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	55 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	56
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 20 diff changeset	57 DEVIO_TABLE(cyg_io_serial_devio,
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	58 serial_write,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	59 serial_read,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	60 serial_get_config,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	61 serial_set_config
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	62 );
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	63
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	64 static void serial_init(serial_channel *chan);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	65 static void serial_xmt_char(serial_channel *chan);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	66 static void serial_rcv_char(serial_channel *chan, unsigned char c);
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	67 #ifdef CYGINT_IO_SERIAL_BLOCK_TRANSFER
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	68 static bool 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	69 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	70 static void serial_data_rcv_done(serial_channel *chan);
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	71 static bool 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	72 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	73 static void serial_data_xmt_done(serial_channel *chan);
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	74 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	75 serial_init,
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	76 serial_xmt_char,
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	77 serial_rcv_char,
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	78 serial_data_rcv_req,
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	79 serial_data_rcv_done,
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	80 serial_data_xmt_req,
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	81 serial_data_xmt_done);
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	82 #else
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 20 diff changeset	83 SERIAL_CALLBACKS(cyg_io_serial_callbacks,
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	84 serial_init,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	85 serial_xmt_char,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	86 serial_rcv_char);
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	87 #endif
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	88
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	89
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	90 static void
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	91 serial_init(serial_channel *chan)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	92 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	93 if (chan->init) return;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	94 if (chan->out_cbuf.len != 0) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	95 #ifdef CYGDBG_IO_INIT
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	96 diag_printf("Set output buffer - buf: %x len: %d\n", chan->out_cbuf.data, chan->out_cbuf.len);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	97 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	98 chan->out_cbuf.waiting = false;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	99 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	100 #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	101 chan->out_cbuf.blocking = true;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	102 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	103 chan->out_cbuf.pending = 0;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	104 cyg_drv_mutex_init(&chan->out_cbuf.lock);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	105 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	106 chan->out_cbuf.low_water = chan->out_cbuf.len / 4;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	107 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	108 if (chan->in_cbuf.len != 0) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	109 #ifdef CYGDBG_IO_INIT
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	110 diag_printf("Set input buffer - buf: %x len: %d\n", chan->in_cbuf.data, chan->in_cbuf.len);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	111 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	112 chan->in_cbuf.waiting = false;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	113 chan->in_cbuf.abort = false;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	114 #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	115 chan->in_cbuf.blocking = true;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	116 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	117 cyg_drv_mutex_init(&chan->in_cbuf.lock);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	118 cyg_drv_cond_init(&chan->in_cbuf.wait, &chan->in_cbuf.lock);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	119 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	120 chan->init = true;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	121 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	122
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	123 static Cyg_ErrNo
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	124 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	125 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	126 cyg_devtab_entry_t t = (cyg_devtab_entry_t )handle;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	127 serial_channel chan = (serial_channel )t->priv;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	128 serial_funs *funs = chan->funs;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	129 cyg_int32 size = *len;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	130 cyg_uint8 buf = (cyg_uint8 )_buf;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	131 int next;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	132 cbuf_t *cbuf = &chan->out_cbuf;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	133 Cyg_ErrNo res = ENOERR;
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	134
4 1d7f19c9e4d1 Merge from eCos master repository on 1999-05-11-21:11:10-BST jlarmour parents: 2 diff changeset	135 cbuf->abort = false;
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	136 cyg_drv_mutex_lock(&cbuf->lock);
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	137
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	138 if (cbuf->len == 0) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	139 // Non interrupt driven (i.e. polled) operation
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	140 while (size-- > 0) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	141 while ((funs->putc)(chan, *buf) == false) ; // Ignore full, keep trying
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	142 buf++;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	143 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	144 } else {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	145 cyg_drv_dsr_lock(); // Avoid race condition testing pointers
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	146 while (size > 0) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	147 next = cbuf->put + 1;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	148 if (next == cbuf->len) next = 0;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	149 if (next == cbuf->get) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	150 cbuf->waiting = true;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	151 // Buffer full - wait for space
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	152 (funs->start_xmit)(chan); // Make sure xmit is running
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	153 // Check flag: 'start_xmit' may have obviated the need to wait :-)
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 20 diff changeset	154 if (cbuf->waiting) {
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	155 #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	156 // 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	157 if (!cbuf->blocking) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	158 *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	159 cbuf->waiting = false;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	160 res = -EAGAIN;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	161 break;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	162 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	163 #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	164 cbuf->pending += size; // Have this much more to send [eventually]
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 20 diff changeset	165 cyg_drv_cond_wait(&cbuf->wait);
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 20 diff changeset	166 cbuf->pending -= size;
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 20 diff changeset	167 }
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	168 if (cbuf->abort) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	169 // Give up!
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	170 *len -= size; // number of characters actually sent
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	171 cbuf->abort = false;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	172 cbuf->waiting = false;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	173 res = -EINTR;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	174 break;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	175 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	176 } else {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	177 cbuf->data[cbuf->put++] = *buf++;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	178 cbuf->put = next;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	179 size--; // Only count if actually sent!
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	180 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	181 }
82 6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 66 diff changeset	182 (funs->start_xmit)(chan); // Start output as necessary
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	183 cyg_drv_dsr_unlock();
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	184 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	185 cyg_drv_mutex_unlock(&cbuf->lock);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	186 return res;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	187 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	188
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	189 static Cyg_ErrNo
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	190 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	191 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	192 cyg_devtab_entry_t t = (cyg_devtab_entry_t )handle;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	193 serial_channel chan = (serial_channel )t->priv;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	194 serial_funs *funs = chan->funs;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	195 cyg_uint8 buf = (cyg_uint8 )_buf;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	196 cyg_int32 size = 0;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	197 cbuf_t *cbuf = &chan->in_cbuf;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	198 Cyg_ErrNo res = ENOERR;
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	199 #ifdef XX_CYGDBG_DIAG_BUF
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	200 extern int enable_diag_uart;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	201 int _enable = enable_diag_uart;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	202 int _time, _stime;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	203 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	204 #endif // CYGDBG_DIAG_BUF
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	205
4 1d7f19c9e4d1 Merge from eCos master repository on 1999-05-11-21:11:10-BST jlarmour parents: 2 diff changeset	206 cbuf->abort = false;
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	207 cyg_drv_mutex_lock(&cbuf->lock);
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	208
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	209 if (cbuf->len == 0) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	210 // Non interrupt driven (i.e. polled) operation
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	211 while (size++ < *len) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	212 *buf++ = (funs->getc)(chan);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	213 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	214 } else {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	215 cyg_drv_dsr_lock(); // Avoid races
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	216 while (size < *len) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	217 if (cbuf->get != cbuf->put) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	218 *buf++ = cbuf->data[cbuf->get];
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	219 if (++cbuf->get == cbuf->len) cbuf->get = 0;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	220 size++;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	221 } else {
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	222 #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	223 if (!cbuf->blocking) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	224 *len = size; // characters actually read
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	225 res = -EAGAIN;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	226 break;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	227 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	228 #endif // CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	229 cbuf->waiting = true;
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	230 #ifdef XX_CYGDBG_DIAG_BUF
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	231 enable_diag_uart = 0;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	232 HAL_CLOCK_READ(&_time);
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	233 _stime = (int)cyg_current_time();
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	234 diag_printf("READ wait - get: %d, put: %d, time: %x.%x\n", cbuf->get, cbuf->put, _stime, _time);
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	235 enable_diag_uart = _enable;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	236 #endif // CYGDBG_DIAG_BUF
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	237 cyg_drv_cond_wait(&cbuf->wait);
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	238 #ifdef XX_CYGDBG_DIAG_BUF
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	239 enable_diag_uart = 0;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	240 HAL_CLOCK_READ(&_time);
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	241 _stime = (int)cyg_current_time();
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	242 diag_printf("READ continue - get: %d, put: %d, time: %x.%x\n", cbuf->get, cbuf->put, _stime, _time);
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	243 enable_diag_uart = _enable;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	244 #endif // CYGDBG_DIAG_BUF
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	245 if (cbuf->abort) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	246 // Give up!
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	247 *len = size; // characters actually read
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	248 cbuf->abort = false;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	249 cbuf->waiting = false;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	250 res = -EINTR;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	251 break;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	252 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	253 }
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 cyg_drv_dsr_unlock();
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	256 }
82 6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 66 diff changeset	257 #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	258 cyg_drv_isr_lock();
82 6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 66 diff changeset	259 enable_diag_uart = 0;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 66 diff changeset	260 HAL_CLOCK_READ(&_time);
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 66 diff changeset	261 _stime = (int)cyg_current_time();
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 66 diff changeset	262 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	263 enable_diag_uart = _enable;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST jlarmour parents: 66 diff changeset	264 cyg_drv_isr_unlock();
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	265 #endif // CYGDBG_DIAG_BUF
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	266 cyg_drv_mutex_unlock(&cbuf->lock);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	267 return res;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	268 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	269
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	270 static Cyg_ErrNo
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	271 serial_get_config(cyg_io_handle_t handle, cyg_uint32 key, void xbuf, cyg_uint32 len)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	272 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	273 cyg_devtab_entry_t t = (cyg_devtab_entry_t )handle;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	274 serial_channel chan = (serial_channel )t->priv;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	275 cyg_serial_info_t buf = (cyg_serial_info_t )xbuf;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	276 Cyg_ErrNo res = ENOERR;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	277 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	278 cbuf_t *in_cbuf = &chan->in_cbuf;
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	279 serial_funs *funs = chan->funs;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	280
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	281 switch (key) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	282 case CYG_IO_GET_CONFIG_SERIAL_INFO:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	283 if (*len < sizeof(cyg_serial_info_t)) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	284 return -EINVAL;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	285 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	286 *buf = chan->config;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	287 *len = sizeof(chan->config);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	288 break;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	289
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	290 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	291 // 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	292 {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	293 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	294 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	295 return -EINVAL;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	296
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	297 *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	298 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	299
88 afdeb44241de Merge from eCos master repository on 2000-05-12-07:47:04-BST jlarmour parents: 86 diff changeset	300 p->rx_bufsize = in_cbuf->len;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	301 if (p->rx_bufsize) {
88 afdeb44241de Merge from eCos master repository on 2000-05-12-07:47:04-BST jlarmour parents: 86 diff changeset	302 p->rx_count = in_cbuf->put - in_cbuf->get;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	303 if (p->rx_count < 0)
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	304 p->rx_count += p->rx_bufsize;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	305 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	306 else
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	307 p->rx_count = 0;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	308
88 afdeb44241de Merge from eCos master repository on 2000-05-12-07:47:04-BST jlarmour parents: 86 diff changeset	309 p->tx_bufsize = out_cbuf->len;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	310 if (p->tx_bufsize) {
88 afdeb44241de Merge from eCos master repository on 2000-05-12-07:47:04-BST jlarmour parents: 86 diff changeset	311 p->tx_count = out_cbuf->put - out_cbuf->get;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	312 if (p->tx_count < 0)
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	313 p->tx_count += p->tx_bufsize;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	314 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	315 else
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	316 p->tx_count = 0;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	317 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	318 break;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	319
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	320 case CYG_IO_GET_CONFIG_SERIAL_OUTPUT_DRAIN:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	321 // 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	322 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	323 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	324 cyg_drv_dsr_lock();
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	325 while (out_cbuf->pending \|\| (out_cbuf->get != out_cbuf->put)) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	326 out_cbuf->waiting = true;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	327 cyg_drv_cond_wait(&out_cbuf->wait);
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	328 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	329 cyg_drv_dsr_unlock();
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	330 cyg_drv_mutex_unlock(&out_cbuf->lock);
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	331 break;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	332
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	333 case CYG_IO_GET_CONFIG_SERIAL_INPUT_FLUSH:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	334 // Flush any buffered input
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	335 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	336 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	337 cyg_drv_dsr_lock();
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	338 if (in_cbuf->waiting) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	339 in_cbuf->abort = true;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	340 cyg_drv_cond_signal(&in_cbuf->wait);
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	341 in_cbuf->waiting = false;
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	342 }
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	343 in_cbuf->get = in_cbuf->put; // Flush buffered input
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	344 cyg_drv_dsr_unlock();
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	345 cyg_drv_mutex_unlock(&in_cbuf->lock);
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	346 break;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	347
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	348 case CYG_IO_GET_CONFIG_SERIAL_ABORT:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	349 // Abort any outstanding I/O, including blocked reads
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	350 // 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	351 if (in_cbuf->len != 0) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	352 in_cbuf->abort = true;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	353 cyg_drv_cond_signal(&in_cbuf->wait);
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	354 }
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	355 if (out_cbuf->len != 0) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	356 out_cbuf->abort = true;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	357 cyg_drv_cond_signal(&out_cbuf->wait);
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	358 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	359 break;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	360
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	361 case CYG_IO_GET_CONFIG_SERIAL_OUTPUT_FLUSH:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	362 // 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	363 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	364 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	365 cyg_drv_dsr_lock();
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	366 if (out_cbuf->get != out_cbuf->put) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	367 out_cbuf->get = out_cbuf->put; // Empties queue!
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	368 (funs->stop_xmit)(chan); // Done with transmit
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	369 }
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	370 if (out_cbuf->waiting) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	371 out_cbuf->abort = true;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	372 cyg_drv_cond_signal(&out_cbuf->wait);
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	373 out_cbuf->waiting = false;
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	374 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	375 cyg_drv_dsr_unlock();
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	376 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	377 break;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	378
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	379 #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	380 case CYG_IO_GET_CONFIG_SERIAL_READ_BLOCKING:
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	381 if (*len < sizeof(cyg_uint32)) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	382 return -EINVAL;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	383 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	384 (cyg_uint32)xbuf = (in_cbuf->blocking) ? 1 : 0;
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	385 break;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	386
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	387 case CYG_IO_GET_CONFIG_SERIAL_WRITE_BLOCKING:
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	388 if (*len < sizeof(cyg_uint32)) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	389 return -EINVAL;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	390 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	391 (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	392 break;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	393 #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	394
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	395 default:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	396 res = -EINVAL;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	397 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	398 return res;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	399 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	400
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	401 static Cyg_ErrNo
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	402 serial_set_config(cyg_io_handle_t handle, cyg_uint32 key, const void xbuf, cyg_uint32 len)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	403 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	404 Cyg_ErrNo res = ENOERR;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	405 cyg_devtab_entry_t t = (cyg_devtab_entry_t )handle;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	406 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	407 #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	408 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	409 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	410 #endif
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	411 serial_funs *funs = chan->funs;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	412 cyg_serial_info_t buf = (cyg_serial_info_t )xbuf;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	413
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	414 switch (key) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	415 case CYG_IO_SET_CONFIG_SERIAL_INFO:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	416 if (*len != sizeof(cyg_serial_info_t)) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	417 return -EINVAL;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	418 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	419 if ((funs->set_config)(chan, buf) != true) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	420 // Device is not happy with paramters or they cannot be set
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	421 res = -EINVAL;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	422 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	423 break;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	424 #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	425 case CYG_IO_SET_CONFIG_SERIAL_READ_BLOCKING:
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	426 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	427 return -EINVAL;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	428 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	429 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	430 break;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	431 case CYG_IO_SET_CONFIG_SERIAL_WRITE_BLOCKING:
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	432 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	433 return -EINVAL;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	434 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	435 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	436 break;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	437 #endif // CYGOPT_IO_SERIAL_SUPPORT_NONBLOCKING
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	438 default:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	439 res = -EINVAL;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	440 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	441 return res;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	442 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	443
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	444 static void
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	445 serial_xmt_char(serial_channel *chan)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	446 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	447 cbuf_t *cbuf = &chan->out_cbuf;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	448 serial_funs *funs = chan->funs;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	449 unsigned char c;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	450 int space;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	451
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	452 while (cbuf->get != cbuf->put) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	453 c = cbuf->data[cbuf->get];
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	454 if ((funs->putc)(chan, c)) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	455 cbuf->get++;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	456 if (cbuf->get == cbuf->len) cbuf->get = 0;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	457 if (cbuf->waiting) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	458 // See if there is now enough room to restart writer
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	459 space = (cbuf->len + cbuf->get) - cbuf->put;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	460 if (space > cbuf->len) space -= cbuf->len;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	461 if (space >= cbuf->low_water) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	462 cbuf->waiting = false;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	463 cyg_drv_cond_broadcast(&cbuf->wait);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	464 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	465 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	466 } else {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	467 return; // Need to wait for more space
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	468 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	469 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	470 (funs->stop_xmit)(chan); // Done with transmit
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	471 if (cbuf->waiting) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	472 cbuf->waiting = false;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	473 cyg_drv_cond_signal(&cbuf->wait);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	474 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	475 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	476
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	477 static void
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	478 serial_rcv_char(serial_channel *chan, unsigned char c)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	479 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	480 cbuf_t *cbuf = &chan->in_cbuf;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	481
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	482 #if 0
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	483 // FIXME: add error handling
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	484 int space;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	485 // Check for overflow
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	486 space = (cbuf->len + cbuf->put - cbuf->get) % cbuf->len;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	487 if (space == (cbuf->len - 1))
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	488 ; // full since put==get means empty
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	489 #endif
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	490
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	491 cbuf->data[cbuf->put++] = c;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	492 if (cbuf->put == cbuf->len) cbuf->put = 0;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	493 if (cbuf->waiting) {
20 5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	494 #ifdef XX_CYGDBG_DIAG_BUF
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	495 extern int enable_diag_uart;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	496 int _enable = enable_diag_uart;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	497 int _time, _stime;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	498 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	499 enable_diag_uart = 0;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	500 HAL_CLOCK_READ(&_time);
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	501 _stime = (int)cyg_current_time();
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	502 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	503 enable_diag_uart = _enable;
5f5102441818 Merge from eCos master repository on 1999-07-02-23:17:07-BST jlarmour parents: 4 diff changeset	504 #endif // CYGDBG_DIAG_BUF
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	505 cbuf->waiting = false;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	506 cyg_drv_cond_signal(&cbuf->wait);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	507 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	508 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: diff changeset	509
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	510 //----------------------------------------------------------------------------
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	511 // Block transfer functions. Not all drivers require these.
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	512 #ifdef CYGINT_IO_SERIAL_BLOCK_TRANSFER
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	513
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	514 static bool
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	515 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	516 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	517 {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	518 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	519 int gap;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	520
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	521 // Check for space
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	522 gap = (cbuf->len + cbuf->put - cbuf->get) % cbuf->len;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	523 if (gap == (cbuf->len - 1))
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	524 return false; // full since put==get means empty
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	525
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	526 if (0 == gap) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	527 // 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	528 // one chunk.
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	529 cbuf->get = 0;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	530 cbuf->put = 0;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	531 gap = cbuf->len - 1;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	532 } else {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	533 // 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	534 // positive: xxxxP.....Gxxx
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	535 // 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	536
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	537 // First try for a gap between put and get locations
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	538 gap = cbuf->get - cbuf->put - 1;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	539 if (gap < 0) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	540 // 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	541 gap = cbuf->len - cbuf->put;
7f461c3a372c Merge from eCos master repository on 2000-07-04-08:04:30-BST jlarmour parents: 88 diff changeset	542
7f461c3a372c Merge from eCos master repository on 2000-07-04-08:04:30-BST jlarmour parents: 88 diff changeset	543 // If get is at the beginning of the buffer, we cannot
7f461c3a372c Merge from eCos master repository on 2000-07-04-08:04:30-BST jlarmour parents: 88 diff changeset	544 // fill the last character, since that would make put==get
7f461c3a372c Merge from eCos master repository on 2000-07-04-08:04:30-BST jlarmour parents: 88 diff changeset	545 // implying empty. In this case we must offer last chunk-1 only.
7f461c3a372c Merge from eCos master repository on 2000-07-04-08:04:30-BST jlarmour parents: 88 diff changeset	546 // GxxxxxP.......
7f461c3a372c Merge from eCos master repository on 2000-07-04-08:04:30-BST jlarmour parents: 88 diff changeset	547 if (cbuf->get == 0)
7f461c3a372c Merge from eCos master repository on 2000-07-04-08:04:30-BST jlarmour parents: 88 diff changeset	548 gap--;
86 6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	549 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	550 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	551
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	552 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	553
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	554 *space_avail = gap;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	555 *space = &cbuf->data[cbuf->put];
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	556 cbuf->put += gap;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	557
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	558 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	559
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	560 return true;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	561 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	562
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	563 static void
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	564 serial_data_rcv_done(serial_channel *chan)
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	565 {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	566 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	567 if (cbuf->waiting) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	568 cbuf->waiting = false;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	569 cyg_drv_cond_signal(&cbuf->wait);
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	570 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	571 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	572
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	573 static bool
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	574 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	575 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	576 {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	577 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	578 int avail;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	579
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	580 // 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	581 // 0: no data
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	582 // 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	583 // positive: ..GxxxxxP.....
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	584 avail = cbuf->put - cbuf->get;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	585 if (0 == avail)
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	586 return false;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	587 if (avail < 0) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	588 avail = cbuf->len - cbuf->get;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	589 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	590
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	591 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	592
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	593 *chars_avail = avail;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	594 *chars = &cbuf->data[cbuf->get];
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	595 cbuf->get += avail;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	596
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	597 if (cbuf->get == cbuf->len) cbuf->get = 0;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	598
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	599 return true;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	600 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	601
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	602 static void
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	603 serial_data_xmt_done(serial_channel *chan)
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	604 {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	605 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	606 serial_funs *funs = chan->funs;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	607 int space;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	608
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	609 (funs->stop_xmit)(chan); // Done with transmit
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	610
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	611 if (cbuf->waiting) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	612 // See if there is now enough room to restart writer
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	613 space = (cbuf->len + cbuf->get) - cbuf->put;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	614 if (space > cbuf->len) space -= cbuf->len;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	615 if (space >= cbuf->low_water) {
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	616 cbuf->waiting = false;
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	617 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	618 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	619 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	620 }
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	621
6512add4f5d6 Merge from eCos master repository on 2000-05-05-07:47:05-BST jlarmour parents: 82 diff changeset	622 #endif // CYGINT_IO_SERIAL_BLOCK_TRANSFER

Mercurial > flash_v2

annotate packages/io/serial/current/src/common/serial.c @ 107:7f461c3a372c