Remove 'alog'. G'bye Jamil.
This commit is contained in:
msmith
parent
8a9262cb57
commit
a31ce60631
@ -2,7 +2,7 @@
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# LINT -- config file for checking all the sources, tries to pull in
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# as much of the source tree as it can.
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#
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# $Id: LINT,v 1.536 1999/01/17 19:09:41 peter Exp $
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# $Id: LINT,v 1.537 1999/01/19 15:11:46 des Exp $
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#
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# NB: You probably don't want to try running a kernel built from this
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# file. Instead, you should start from GENERIC, and add options from
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@ -1296,7 +1296,6 @@ device pca0 at isa? port "IO_TIMER1" tty
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# spigot: The Creative Labs Video Spigot video-acquisition board
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# meteor: Matrox Meteor video capture board
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# bktr: Brooktree bt848/848a/849/878/879 family video capture and TV Tuner board
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# alog: Industrial Computer Source AIO8-P driver
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# cy: Cyclades serial driver
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# dgb: Digiboard PC/Xi and PC/Xe series driver (ALPHA QUALITY!)
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# dgm: Digiboard PC/Xem driver
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@ -1402,7 +1401,6 @@ device apm0 at isa?
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device gp0 at isa? port 0x2c0 tty
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device gsc0 at isa? port "IO_GSC1" tty drq 3
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device joy0 at isa? port IO_GAME
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device alog0 at isa? port 0x260 tty irq 5
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device cy0 at isa? tty irq 10 iomem 0xd4000 iosiz 0x2000
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options CY_PCI_FASTINTR # Use with cy_pci unless irq is shared
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device dgb0 at isa? port 0x220 iomem 0xfc0000 iosiz ? tty
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@ -1,7 +1,7 @@
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# This file tells config what files go into building a kernel,
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# files marked standard are always included.
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#
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# $Id: files.i386,v 1.218 1999/01/11 03:18:35 yokota Exp $
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# $Id: files.i386,v 1.219 1999/01/19 11:31:22 yokota Exp $
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#
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# The long compile-with and dependency lines are required because of
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# limitations in config: backslash-newline doesn't work in strings, and
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@ -108,7 +108,6 @@ i386/isa/adv_isa.c optional adv device-driver
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i386/isa/aha_isa.c optional aha device-driver
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#i386/isa/aic6360.c optional aic device-driver
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i386/isa/aic_isa.c optional aic device-driver
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i386/isa/alog.c optional alog device-driver
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i386/isa/atkbd_isa.c optional atkbd device-driver
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i386/isa/atkbdc_isa.c optional atkbdc device-driver
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i386/isa/bt_isa.c optional bt device-driver
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@ -1,4 +1,4 @@
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$Id: majors.i386,v 1.63 1999/01/13 08:05:16 msmith Exp $
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$Id: majors.i386,v 1.64 1999/01/14 03:47:55 msmith Exp $
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Hopefully, this list will one day be obsoleted by DEVFS, but for now
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this is the current allocation of device major numbers.
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@ -130,7 +130,7 @@ chrdev name comments
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83 can CAN16-2 CAN-PC Interface
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84 dtfp Datum Time and Frequency processor (louie@UU.NET)
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85 vesa VESA support device (j_mini@efn.org)
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86 alog Industrial Computer Source AIO8-P driver
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86 alog Industrial Computer Source AIO8-P driver (deprecated)
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87 wfd ATAPI floppy client of "ata"
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88 dpt DPT RAID Controller <shimon@i-connect.net>
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89 pps Pulse-Per-Second timing interface
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@ -2,7 +2,7 @@
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# LINT -- config file for checking all the sources, tries to pull in
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# as much of the source tree as it can.
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#
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# $Id: LINT,v 1.536 1999/01/17 19:09:41 peter Exp $
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# $Id: LINT,v 1.537 1999/01/19 15:11:46 des Exp $
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#
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# NB: You probably don't want to try running a kernel built from this
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# file. Instead, you should start from GENERIC, and add options from
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@ -1296,7 +1296,6 @@ device pca0 at isa? port "IO_TIMER1" tty
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# spigot: The Creative Labs Video Spigot video-acquisition board
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# meteor: Matrox Meteor video capture board
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# bktr: Brooktree bt848/848a/849/878/879 family video capture and TV Tuner board
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# alog: Industrial Computer Source AIO8-P driver
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# cy: Cyclades serial driver
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# dgb: Digiboard PC/Xi and PC/Xe series driver (ALPHA QUALITY!)
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# dgm: Digiboard PC/Xem driver
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@ -1402,7 +1401,6 @@ device apm0 at isa?
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device gp0 at isa? port 0x2c0 tty
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device gsc0 at isa? port "IO_GSC1" tty drq 3
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device joy0 at isa? port IO_GAME
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device alog0 at isa? port 0x260 tty irq 5
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device cy0 at isa? tty irq 10 iomem 0xd4000 iosiz 0x2000
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options CY_PCI_FASTINTR # Use with cy_pci unless irq is shared
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device dgb0 at isa? port 0x220 iomem 0xfc0000 iosiz ? tty
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@ -2,7 +2,7 @@
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# LINT -- config file for checking all the sources, tries to pull in
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# as much of the source tree as it can.
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#
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# $Id: LINT,v 1.536 1999/01/17 19:09:41 peter Exp $
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# $Id: LINT,v 1.537 1999/01/19 15:11:46 des Exp $
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#
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# NB: You probably don't want to try running a kernel built from this
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# file. Instead, you should start from GENERIC, and add options from
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@ -1296,7 +1296,6 @@ device pca0 at isa? port "IO_TIMER1" tty
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# spigot: The Creative Labs Video Spigot video-acquisition board
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# meteor: Matrox Meteor video capture board
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# bktr: Brooktree bt848/848a/849/878/879 family video capture and TV Tuner board
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# alog: Industrial Computer Source AIO8-P driver
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# cy: Cyclades serial driver
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# dgb: Digiboard PC/Xi and PC/Xe series driver (ALPHA QUALITY!)
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# dgm: Digiboard PC/Xem driver
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@ -1402,7 +1401,6 @@ device apm0 at isa?
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device gp0 at isa? port 0x2c0 tty
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device gsc0 at isa? port "IO_GSC1" tty drq 3
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device joy0 at isa? port IO_GAME
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device alog0 at isa? port 0x260 tty irq 5
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device cy0 at isa? tty irq 10 iomem 0xd4000 iosiz 0x2000
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options CY_PCI_FASTINTR # Use with cy_pci unless irq is shared
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device dgb0 at isa? port 0x220 iomem 0xfc0000 iosiz ? tty
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@ -1,7 +1,7 @@
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# This file tells config what files go into building a kernel,
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# files marked standard are always included.
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#
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# $Id: files.i386,v 1.218 1999/01/11 03:18:35 yokota Exp $
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# $Id: files.i386,v 1.219 1999/01/19 11:31:22 yokota Exp $
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#
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# The long compile-with and dependency lines are required because of
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# limitations in config: backslash-newline doesn't work in strings, and
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@ -108,7 +108,6 @@ i386/isa/adv_isa.c optional adv device-driver
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i386/isa/aha_isa.c optional aha device-driver
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#i386/isa/aic6360.c optional aic device-driver
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i386/isa/aic_isa.c optional aic device-driver
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i386/isa/alog.c optional alog device-driver
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i386/isa/atkbd_isa.c optional atkbd device-driver
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i386/isa/atkbdc_isa.c optional atkbdc device-driver
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i386/isa/bt_isa.c optional bt device-driver
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@ -1,4 +1,4 @@
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$Id: majors.i386,v 1.63 1999/01/13 08:05:16 msmith Exp $
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$Id: majors.i386,v 1.64 1999/01/14 03:47:55 msmith Exp $
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Hopefully, this list will one day be obsoleted by DEVFS, but for now
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this is the current allocation of device major numbers.
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@ -130,7 +130,7 @@ chrdev name comments
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83 can CAN16-2 CAN-PC Interface
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84 dtfp Datum Time and Frequency processor (louie@UU.NET)
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85 vesa VESA support device (j_mini@efn.org)
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86 alog Industrial Computer Source AIO8-P driver
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86 alog Industrial Computer Source AIO8-P driver (deprecated)
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87 wfd ATAPI floppy client of "ata"
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88 dpt DPT RAID Controller <shimon@i-connect.net>
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89 pps Pulse-Per-Second timing interface
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@ -1,664 +0,0 @@
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/*
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* Copyright (c) 1998 Scottibox
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* All rights reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Industrial Computer Source model AIO8-P
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* 8 channel, moderate speed analog to digital converter board with
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* 128 channel MUX capability via daisy chained AT-16P units
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* alog.c, character device driver, last revised January 6 1998
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* See http://www.scottibox.com
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* http://www.indcompsrc.com/products/data/html/aio8g-p.html
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* http://www.indcompsrc.com/products/data/html/at16-p.html
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*
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* Written by: Jamil J. Weatherbee <jamil@scottibox.com>
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*
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*/
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/* Include Files */
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#include "alog.h"
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#if NALOG > 0
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/conf.h>
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#include <sys/fcntl.h>
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#include <sys/malloc.h>
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#include <sys/poll.h>
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#include <sys/vnode.h>
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#include <sys/filio.h>
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#include <i386/isa/isa_device.h>
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#include <sys/alogio.h>
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#include <sys/dataacq.h>
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#include "opt_devfs.h"
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#ifdef DEVFS
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#include <sys/devfsext.h>
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#endif
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/* Local Defines */
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/* Tests have shown that increasing the fifo size
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* beyond 64 entries for this particular piece of hardware is
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* unproductive */
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#ifdef ALOG_FIFOSIZE
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#define FIFOSIZE ALOG_FIFOSIZE
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#else
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#define FIFOSIZE 64
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#endif
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#ifdef ALOG_FIFO_TRIGGER
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#define DEFAULT_FIFO_TRIGGER ALOG_FIFO_TRIGGER
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#else
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#define DEFAULT_FIFO_TRIGGER 1
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#endif
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#ifdef ALOG_CHANNELS
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#define NUMCHANNELS ALOG_CHANNELS
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#else
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#define NUMCHANNELS 128
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#endif
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#ifdef ALOG_TIMO
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#define READTIMO ALOG_TIMO
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#else
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#define READTIMO (MAX_MICRO_PERIOD*NUMCHANNELS/500000*hz)
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#endif
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#define CDEV_MAJOR 86
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#define NUMPORTS 8
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#define MAXUNITS 2
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#define NUMIMUXES 8
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#define ADLOW 0x0
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#define ADHIGH 0x1
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#define STATUS 0x2
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#define CNTR0 0x4
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#define CNTR1 0x5
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#define CNTR2 0x6
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#define CNTRCNTRL 0x7
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#define DEVFORMAT "alog%d%c%d"
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#define CLOCK2FREQ 4.165
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#define MIN_MICRO_PERIOD 25
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#define MAX_MICRO_PERIOD (65535/CLOCK2FREQ*PRIMARY_STATES)
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#define DEFAULT_MICRO_PERIOD MAX_MICRO_PERIOD
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#define READMAXTRIG 0.75*FIFOSIZE
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#define ALOGPRI PRIBIO
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#define ALOGMSG "alogio"
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#define PRIMARY_STATES 2 /* Setup and conversion are clock tick consuming */
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#define STATE_SETUP 0
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#define STATE_CONVERT 1
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#define STATE_READ 2
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/* Notes on interrupt driven A/D conversion:
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* On the AIO8-P, interrupt driven conversion (the only type supported by this
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* driver) is facilitated through 8253 timer #2. In order for interrrupts to
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* be generated you must connect line 6 to line 24 (counter 2 output to
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* interrupt input) and line 23 to line 29 (counter 2 gate to +5VDC).
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* Due to the design of the AIO8-P this precludes the use of programmable
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* gain control.
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*/
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/* mode bits for the status register */
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#define EOC 0x80
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#define IEN 0x08
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#define IMUXMASK 0x07
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#define EMUXMASK 0xf0
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/* mode bits for counter controller */
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#define LD2MODE4 0xb8
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/* Minor allocations:
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* UCCCCMMM
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* U: board unit (0-1)
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* CCCC: external multiplexer channel (0-15) (on AT-16P units)
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* MMM: internal multiplexer channel (0-7) (on AIO8-P card)
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*/
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#define UNIT(dev) ((minor(dev) & 0x80) >> 7)
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#define CHANNEL(dev) (minor(dev) & 0x7f)
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#define EMUX(chan) ((chan & 0x78) >> 3)
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#define EMUXMAKE(chan) ((chan & 0x78) << 1)
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#define IMUX(chan) (chan & 0x07)
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#define LMINOR(unit, chan) ((unit << 7)+chan)
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/* port statuses */
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#define STATUS_UNUSED 0
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#define STATUS_INUSE 1
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#define STATUS_STOPPED 2
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#define STATUS_INIT 3
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/* Type definitions */
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typedef struct
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{
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short status; /* the status of this chan */
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struct selinfo readpoll; /* the poll() info */
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u_short fifo[FIFOSIZE]; /* fifo for this chan */
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int fifostart, fifoend; /* the ptrs showing where info is stored in fifo */
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int fifosize, fifotrig; /* the current and trigger size of the fifo */
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void *devfs_token; /* the devfs token for this chan */
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int nextchan;
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} talog_chan;
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typedef struct
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{
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struct isa_device *isaunit; /* ptr to isa device information */
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talog_chan chan[NUMCHANNELS]; /* the device nodes */
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int curchan; /* the current chan being intr handled */
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int firstchan; /* the first chan to go to in list */
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int state; /* is the node in setup or convert mode */
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long microperiod; /* current microsecond period setting */
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u_char perlo, perhi; /* current values to send to clock 2 after every intr */
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} talog_unit;
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/* Function Prototypes */
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static int alog_probe (struct isa_device *idp); /* Check for alog board */
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static int alog_attach (struct isa_device *idp); /* Take alog board */
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static ointhand2_t alogintr;
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static int sync_clock2 (int unit, long period); /* setup clock 2 period */
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static int putfifo (talog_chan *pchan, u_short fifoent);
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static int alog_open (dev_t dev, int oflags, int devtype, struct proc *p);
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static int alog_close (dev_t dev, int fflag, int devtype, struct proc *p);
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static int alog_ioctl (dev_t dev, u_long cmd, caddr_t data,
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int fflag, struct proc *p);
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static int alog_read (dev_t dev, struct uio *uio, int ioflag);
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static int alog_poll (dev_t dev, int events, struct proc *p);
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/* Global Data */
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static int alog_devsw_installed = 0; /* Protect against reinit multiunit */
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static talog_unit *alog_unit[NALOG]; /* data structs for each unit */
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/* Character device switching structure */
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static struct cdevsw alog_cdevsw = { alog_open, alog_close, alog_read,
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nowrite, alog_ioctl, nostop, noreset,
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nodevtotty, alog_poll, nommap,
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nostrategy, "alog", NULL, -1 };
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/* Structure expected to tell how to probe and attach the driver
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* Must be published externally (cannot be static) */
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struct isa_driver alogdriver = { alog_probe, alog_attach, "alog", 0 };
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/* handle the ioctls */
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static int alog_ioctl (dev_t dev, u_long cmd, caddr_t data,
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int fflag, struct proc *p)
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{
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int unit = UNIT(dev);
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int chan = CHANNEL(dev);
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talog_unit *info = alog_unit[unit];
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int s;
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switch (cmd)
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{
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case FIONBIO: return 0; /* this allows for non-blocking ioctls */
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case AD_NCHANS_GET: *(int *)data = NUMCHANNELS;
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return 0;
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case AD_FIFOSIZE_GET: *(int *)data = FIFOSIZE;
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return 0;
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case AD_FIFO_TRIGGER_GET: s = spltty();
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*(int *)data = info->chan[chan].fifotrig;
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splx(s);
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return 0;
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case AD_FIFO_TRIGGER_SET:
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s = spltty();
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if ((*(int *)data < 1) || (*(int *)data > FIFOSIZE))
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{
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splx(s);
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return EPERM;
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}
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info->chan[chan].fifotrig = *(int *)data;
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splx(s);
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return 0;
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case AD_STOP: s = spltty();
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info->chan[chan].status = STATUS_STOPPED;
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splx(s);
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return 0;
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case AD_START: s = spltty();
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info->chan[chan].status = STATUS_INUSE;
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splx(s);
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return 0;
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case AD_MICRO_PERIOD_SET:
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s = spltty();
|
||||
if (sync_clock2 (unit, *(long *) data))
|
||||
{
|
||||
splx(s);
|
||||
return EPERM;
|
||||
}
|
||||
splx(s);
|
||||
return 0;
|
||||
|
||||
case AD_MICRO_PERIOD_GET: s = spltty();
|
||||
*(long *)data = info->microperiod;
|
||||
splx(s);
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
return ENOTTY;
|
||||
}
|
||||
|
||||
|
||||
/* handle poll() based read polling */
|
||||
static int alog_poll (dev_t dev, int events, struct proc *p)
|
||||
{
|
||||
int unit = UNIT(dev);
|
||||
int chan = CHANNEL(dev);
|
||||
talog_unit *info = alog_unit[unit];
|
||||
int s;
|
||||
|
||||
s = spltty();
|
||||
if (events & (POLLIN | POLLRDNORM)) /* if polling for any/normal data */
|
||||
if (info->chan[chan].fifosize >= info->chan[chan].fifotrig)
|
||||
{
|
||||
splx(s);
|
||||
|
||||
return events & (POLLIN | POLLRDNORM); /* ready for any/read */
|
||||
}
|
||||
else
|
||||
{
|
||||
/* record this request */
|
||||
selrecord (p, &(info->chan[chan].readpoll));
|
||||
splx(s);
|
||||
return 0; /* not ready, yet */
|
||||
}
|
||||
|
||||
splx(s);
|
||||
return 0; /* not ready (any I never will be) */
|
||||
}
|
||||
|
||||
|
||||
/* how to read from the board */
|
||||
static int alog_read (dev_t dev, struct uio *uio, int ioflag)
|
||||
{
|
||||
int unit = UNIT(dev);
|
||||
int chan = CHANNEL(dev);
|
||||
talog_unit *info = alog_unit[unit];
|
||||
int s, oldtrig, toread, err = 0;
|
||||
|
||||
s = spltty();
|
||||
|
||||
oldtrig = info->chan[chan].fifotrig; /* save official trigger value */
|
||||
while (uio->uio_resid >= sizeof(u_short)) /* while uio has space */
|
||||
{
|
||||
if (!info->chan[chan].fifosize) /* if we have an empty fifo */
|
||||
{
|
||||
if (ioflag & IO_NDELAY) /* exit if we are non-blocking */
|
||||
{ err = EWOULDBLOCK;
|
||||
break;
|
||||
}
|
||||
/* Start filling fifo on first blocking read */
|
||||
if (info->chan[chan].status == STATUS_INIT)
|
||||
info->chan[chan].status = STATUS_INUSE;
|
||||
/* temporarily adjust the fifo trigger to be optimal size */
|
||||
info->chan[chan].fifotrig =
|
||||
min (READMAXTRIG, uio->uio_resid / sizeof(u_short));
|
||||
/* lets sleep until we have some io available or timeout */
|
||||
err = tsleep (&(info->chan[chan].fifo), ALOGPRI | PCATCH, ALOGMSG,
|
||||
info->chan[chan].fifotrig*READTIMO);
|
||||
if (err == EWOULDBLOCK)
|
||||
{ printf (DEVFORMAT ": read timeout\n", unit,
|
||||
'a'+EMUX(chan), IMUX(chan));
|
||||
}
|
||||
if (err == ERESTART) err = EINTR; /* don't know how to restart */
|
||||
if (err) break; /* exit if any kind of error or signal */
|
||||
}
|
||||
|
||||
/* ok, now if we got here there is something to read from the fifo */
|
||||
|
||||
/* calculate how many entries we can read out from the fifostart
|
||||
* pointer */
|
||||
toread = min (uio->uio_resid / sizeof(u_short),
|
||||
min (info->chan[chan].fifosize,
|
||||
FIFOSIZE - info->chan[chan].fifostart));
|
||||
/* perform the move, if there is an error then exit */
|
||||
if (err = uiomove((caddr_t)
|
||||
&(info->chan[chan].fifo[info->chan[chan].fifostart]),
|
||||
toread * sizeof(u_short), uio)) break;
|
||||
info->chan[chan].fifosize -= toread; /* fifo this much smaller */
|
||||
info->chan[chan].fifostart += toread; /* we got this many more */
|
||||
if (info->chan[chan].fifostart == FIFOSIZE)
|
||||
info->chan[chan].fifostart = 0; /* wrap around fifostart */
|
||||
|
||||
}
|
||||
info->chan[chan].fifotrig = oldtrig; /* restore trigger changes */
|
||||
splx(s);
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
/* open a channel */
|
||||
static int alog_open (dev_t dev, int oflags, int devtype, struct proc *p)
|
||||
{
|
||||
int unit = UNIT(dev); /* get unit no */
|
||||
int chan = CHANNEL(dev); /* get channel no */
|
||||
talog_unit *info;
|
||||
int s; /* priority */
|
||||
int cur;
|
||||
|
||||
if ((unit >= NALOG) || (unit >= MAXUNITS) || (chan >= NUMCHANNELS))
|
||||
return ENXIO; /* unit and channel no ok ? */
|
||||
if (!alog_unit[unit]) return ENXIO; /* unit attached */
|
||||
info = alog_unit[unit]; /* ok, this is valid now */
|
||||
|
||||
if (info->chan[chan].status) return EBUSY; /* channel busy */
|
||||
if (oflags & FREAD)
|
||||
{
|
||||
s=spltty();
|
||||
info->chan[chan].status = STATUS_INIT; /* channel open, read waiting */
|
||||
info->chan[chan].fifostart = info->chan[chan].fifoend =
|
||||
info->chan[chan].fifosize = 0;/* fifo empty */
|
||||
info->chan[chan].fifotrig = DEFAULT_FIFO_TRIGGER;
|
||||
if (info->firstchan < 0) /* if empty chain */
|
||||
{
|
||||
info->firstchan = info->curchan = chan; /* rev up the list */
|
||||
info->chan[chan].nextchan = -1; /* end of the list */
|
||||
}
|
||||
else /* non empty list must insert */
|
||||
{
|
||||
if (chan < info->firstchan) /* this one must become first in list */
|
||||
{
|
||||
info->chan[chan].nextchan = info->firstchan;
|
||||
info->firstchan = chan;
|
||||
}
|
||||
else /* insert this one as second - last in chan list */
|
||||
{
|
||||
cur = info->firstchan;
|
||||
|
||||
/* traverse list as long as cur is less than chan and cur is
|
||||
* not last in list */
|
||||
while ((info->chan[cur].nextchan < chan) &&
|
||||
(info->chan[cur].nextchan >= 0))
|
||||
cur = info->chan[cur].nextchan;
|
||||
|
||||
/* now cur should point to the entry right before yours */
|
||||
info->chan[chan].nextchan = info->chan[cur].nextchan;
|
||||
info->chan[cur].nextchan = chan; /* insert yours in */
|
||||
}
|
||||
}
|
||||
splx(s);
|
||||
return 0; /* open successful */
|
||||
}
|
||||
return EPERM; /* this is a read only device */
|
||||
}
|
||||
|
||||
|
||||
/* close a channel */
|
||||
static int alog_close (dev_t dev, int fflag, int devtype, struct proc *p)
|
||||
{
|
||||
int unit = UNIT(dev);
|
||||
int chan = CHANNEL(dev);
|
||||
talog_unit *info = alog_unit[unit];
|
||||
int s;
|
||||
int cur;
|
||||
|
||||
s = spltty();
|
||||
info->chan[chan].status = STATUS_UNUSED;
|
||||
|
||||
/* what if we are in the middle of a conversion ?
|
||||
* then smoothly get us out of it: */
|
||||
if (info->curchan == chan)
|
||||
{ /* if we are last in list set curchan to first in list */
|
||||
if ((info->curchan = info->chan[chan].nextchan) < 0)
|
||||
info->curchan = info->firstchan;
|
||||
|
||||
info->state = STATE_SETUP;
|
||||
}
|
||||
|
||||
/* if this is the first channel, then make the second channel the first
|
||||
* channel (note that if this is also the only channel firstchan becomes
|
||||
* -1 and so the list is marked as empty */
|
||||
|
||||
if (chan == info->firstchan)
|
||||
info->firstchan = info->chan[chan].nextchan;
|
||||
else /* ok, so there must be at least 2 channels (and it is not the first) */
|
||||
{
|
||||
cur = info->firstchan;
|
||||
|
||||
/* find the entry before it (which must exist if you are closing) */
|
||||
while (info->chan[cur].nextchan < chan)
|
||||
cur = info->chan[cur].nextchan;
|
||||
/* at this point we must have the entry before ours */
|
||||
info->chan[cur].nextchan = info->chan[chan].nextchan; /* give our link */
|
||||
|
||||
}
|
||||
|
||||
splx(s);
|
||||
|
||||
return 0; /* close always successful */
|
||||
}
|
||||
|
||||
|
||||
/* The probing routine - returns number of bytes needed */
|
||||
static int alog_probe (struct isa_device *idp)
|
||||
{
|
||||
int unit = idp->id_unit; /* this device unit number */
|
||||
int iobase = idp->id_iobase; /* the base address of the unit */
|
||||
int addr;
|
||||
|
||||
if ((unit < 0) || (unit >= NALOG) || (unit >= MAXUNITS))
|
||||
{
|
||||
printf ("alog: invalid unit number (%d)\n", unit);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* the unit number is ok, lets check if used */
|
||||
if (alog_unit[unit])
|
||||
{
|
||||
printf ("alog: unit (%d) already attached\n", unit);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (inb (iobase+STATUS) & EOC) return 0; /* End of conv bit should be 0 */
|
||||
for (addr=0; addr<NUMIMUXES; addr++)
|
||||
{
|
||||
outb (iobase+STATUS, EMUXMASK|addr);/* output ones to upper nibbl+addr */
|
||||
/* get back a zero in MSB and the addr where you put it */
|
||||
if ((inb (iobase+STATUS) & (EOC|IMUXMASK)) != addr) return 0;
|
||||
}
|
||||
|
||||
return NUMPORTS; /* this device needs this many ports */
|
||||
}
|
||||
|
||||
|
||||
/* setup the info structure correctly for reloading clock 2 after interrupt */
|
||||
static int sync_clock2 (int unit, long period)
|
||||
{
|
||||
int clockper;
|
||||
talog_unit *info = alog_unit[unit];
|
||||
|
||||
if ((period > MAX_MICRO_PERIOD) || (period < MIN_MICRO_PERIOD))
|
||||
return -1; /* error period too long */
|
||||
info->microperiod = period; /* record the period */
|
||||
clockper = (CLOCK2FREQ * period) / PRIMARY_STATES;
|
||||
info->perlo = clockper & 0xff; /* least sig byte of clock period */
|
||||
info->perhi = ((clockper & 0xff00) >> 8); /* most sig byte of clock period */
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/* The attachment routine - returns true on success */
|
||||
static int alog_attach (struct isa_device *idp)
|
||||
{
|
||||
int unit = idp->id_unit; /* this device unit number */
|
||||
talog_unit *info; /* pointer to driver specific info for unit */
|
||||
int chan; /* the channel used for creating devfs nodes */
|
||||
|
||||
idp->id_ointr = alogintr;
|
||||
if (!(info = malloc(sizeof(*info), M_DEVBUF, M_NOWAIT)))
|
||||
{
|
||||
printf ("alog%d: cannot allocate driver storage\n", unit);
|
||||
return 0;
|
||||
}
|
||||
alog_unit[unit] = info; /* make sure to save the pointer */
|
||||
bzero (info, sizeof(*info)); /* clear info structure to all false */
|
||||
info->isaunit = idp; /* store ptr to isa device information */
|
||||
sync_clock2 (unit, DEFAULT_MICRO_PERIOD); /* setup perlo and perhi */
|
||||
info->firstchan = -1; /* channel lists are empty */
|
||||
|
||||
/* insert devfs nodes */
|
||||
|
||||
#ifdef DEVFS
|
||||
for (chan=0; chan<NUMCHANNELS; chan++)
|
||||
info->chan[chan].devfs_token =
|
||||
devfs_add_devswf(&alog_cdevsw, LMINOR(unit, chan), DV_CHR,
|
||||
UID_ROOT, GID_WHEEL, 0400, DEVFORMAT,
|
||||
unit, 'a'+EMUX(chan), IMUX(chan));
|
||||
#endif
|
||||
|
||||
printf ("alog%d: %d channels, %d bytes/FIFO, %d entry trigger\n",
|
||||
unit, NUMCHANNELS, FIFOSIZE*sizeof(u_short),
|
||||
DEFAULT_FIFO_TRIGGER);
|
||||
alogintr (unit); /* start the periodic interrupting process */
|
||||
return 1; /* obviously successful */
|
||||
}
|
||||
|
||||
|
||||
/* Unit interrupt handling routine (interrupts generated by clock 2) */
|
||||
static void alogintr (int unit)
|
||||
{
|
||||
talog_unit *info = alog_unit[unit];
|
||||
int iobase = info->isaunit->id_iobase;
|
||||
u_short fifoent;
|
||||
|
||||
|
||||
if (info->firstchan >= 0) /* ? is there even a chan list to traverse */
|
||||
switch (info->state)
|
||||
{
|
||||
case STATE_READ:
|
||||
if (info->chan[info->curchan].status == STATUS_INUSE)
|
||||
{
|
||||
if (inb (iobase+STATUS) & EOC) /* check that conversion finished */
|
||||
printf (DEVFORMAT ": incomplete conversion\n", unit,
|
||||
'a'+EMUX(info->curchan), IMUX(info->curchan));
|
||||
else /* conversion is finished (should always be) */
|
||||
{
|
||||
fifoent = (inb (iobase+ADHIGH) << 8) +
|
||||
inb (iobase+ADLOW);
|
||||
if (putfifo(&(info->chan[info->curchan]), fifoent))
|
||||
{
|
||||
printf (DEVFORMAT ": fifo overflow\n", unit,
|
||||
'a'+EMUX(info->curchan), IMUX(info->curchan));
|
||||
}
|
||||
if (info->chan[info->curchan].fifosize >=
|
||||
info->chan[info->curchan].fifotrig)
|
||||
{
|
||||
/* if we've reached trigger levels */
|
||||
selwakeup (&(info->chan[info->curchan].readpoll));
|
||||
wakeup (&(info->chan[info->curchan].fifo));
|
||||
}
|
||||
}
|
||||
}
|
||||
/* goto setup state for next channel on list */
|
||||
if ((info->curchan = info->chan[info->curchan].nextchan) < 0)
|
||||
info->curchan = info->firstchan;
|
||||
/* notice lack of break here this implys a STATE_SETUP */
|
||||
case STATE_SETUP: /* set the muxes and let them settle */
|
||||
#if NUMCHANNELS > NUMIMUXES /* only do this if using external muxes */
|
||||
outb (iobase+STATUS,
|
||||
EMUXMAKE(info->curchan) | IMUX(info->curchan) | IEN);
|
||||
info->state = STATE_CONVERT;
|
||||
break;
|
||||
#endif
|
||||
case STATE_CONVERT:
|
||||
outb (iobase+STATUS,
|
||||
EMUXMAKE(info->curchan) | IMUX(info->curchan) | IEN);
|
||||
outb (iobase+ADHIGH, 0); /* start the conversion */
|
||||
info->state = STATE_READ;
|
||||
break;
|
||||
}
|
||||
else /* this is kind of like an idle mode */
|
||||
{
|
||||
outb (iobase+STATUS, IEN); /* no list keep getting interrupts though */
|
||||
/* since we have no open channels spin clock rate down to
|
||||
* minimum to save interrupt overhead */
|
||||
outb (iobase+CNTRCNTRL, LD2MODE4); /* counter 2 to mode 4 strobe */
|
||||
outb (iobase+CNTR2, 0xff); /* longest period we can generate */
|
||||
outb (iobase+CNTR2, 0xff);
|
||||
return;
|
||||
}
|
||||
outb (iobase+CNTRCNTRL, LD2MODE4); /* counter 2 to mode 4 strobe */
|
||||
outb (iobase+CNTR2, info->perlo); /* low part of the period count */
|
||||
outb (iobase+CNTR2, info->perhi); /* high part of the period count */
|
||||
}
|
||||
|
||||
|
||||
/* this will put an entry in fifo, returns 1 if the first item in
|
||||
* fifo was wiped (overflow) or 0 if everything went fine */
|
||||
static int putfifo (talog_chan *pchan, u_short fifoent)
|
||||
{
|
||||
pchan->fifo[pchan->fifoend] = fifoent; /* insert the entry in */
|
||||
pchan->fifoend++; /* one more in fifo */
|
||||
if (pchan->fifoend == FIFOSIZE) pchan->fifoend = 0; /* wrap around */
|
||||
/* note: I did intend to write over the oldest entry on overflow */
|
||||
if (pchan->fifosize == FIFOSIZE) /* overflowing state already */
|
||||
{
|
||||
pchan->fifostart++;
|
||||
if (pchan->fifostart == FIFOSIZE) pchan->fifostart = 0;
|
||||
return 1; /* we overflowed */
|
||||
}
|
||||
pchan->fifosize++; /* actually one bigger, else same size */
|
||||
return 0; /* went in just fine */
|
||||
}
|
||||
|
||||
|
||||
/* Driver initialization */
|
||||
static void alog_drvinit (void *unused)
|
||||
{
|
||||
dev_t dev; /* Type for holding device major/minor numbers (int) */
|
||||
|
||||
if (!alog_devsw_installed)
|
||||
{
|
||||
dev = makedev (CDEV_MAJOR, 0); /* description of device major */
|
||||
cdevsw_add (&dev, &alog_cdevsw, NULL); /* put driver in cdev table */
|
||||
alog_devsw_installed=1;
|
||||
}
|
||||
}
|
||||
|
||||
/* System initialization call instance */
|
||||
|
||||
SYSINIT (alogdev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE+CDEV_MAJOR,
|
||||
alog_drvinit,NULL);
|
||||
|
||||
#endif
|
||||
@ -1,62 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 1998 Scottibox
|
||||
* All rights reserved.
|
||||
*
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer
|
||||
* in this position and unchanged.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* Industrial Computer Source model AIO8-P
|
||||
* 128 channel MUX capability via daisy chained AT-16P units
|
||||
* alogio.h, definitions for alog ioctl(), last revised January 6 1998
|
||||
* See http://www.scottibox.com
|
||||
* http://www.indcompsrc.com/products/data/html/aio8g-p.html
|
||||
* http://www.indcompsrc.com/products/data/html/at16-p.html
|
||||
*
|
||||
* Written by: Jamil J. Weatherbee <jamil@scottibox.com>
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef _SYS_ALOGIO_H_
|
||||
#define _SYS_ALOGIO_H_
|
||||
|
||||
#ifndef KERNEL
|
||||
#include <sys/types.h>
|
||||
#endif
|
||||
#include <sys/ioccom.h>
|
||||
|
||||
/* Note: By default A/D conversions are started when a channel is open */
|
||||
|
||||
/* Halt clocked A/D conversion on an open channel */
|
||||
#define AD_STOP _IO('A', 100)
|
||||
/* Restart clocked A/D conversion on an open channel */
|
||||
#define AD_START _IO('A', 101)
|
||||
/* Get the number of entries the fifo for this channel will hold */
|
||||
#define AD_FIFOSIZE_GET _IOR('A', 102, int)
|
||||
/* Set the minimum number of entries a fifo must contain before it
|
||||
* notifies a poll() or read() that is waiting for it to fill */
|
||||
#define AD_FIFO_TRIGGER_SET _IOW('A', 103, int)
|
||||
/* This gets the the fifo trigger setting */
|
||||
#define AD_FIFO_TRIGGER_GET _IOR('A', 104, int)
|
||||
|
||||
#endif
|
||||
@ -1,34 +0,0 @@
|
||||
/* Header for general data acquisition definitions.
|
||||
*/
|
||||
|
||||
#ifndef _SYS_DATAACQ_H_
|
||||
#define _SYS_DATAACQ_H_
|
||||
|
||||
#include <sys/ioccom.h>
|
||||
|
||||
/* Period in microseconds between analog I/O samples.
|
||||
*/
|
||||
#define AD_MICRO_PERIOD_SET _IOW('A', 1, long)
|
||||
#define AD_MICRO_PERIOD_GET _IOR('A', 2, long)
|
||||
|
||||
/* Gain list support. Initially all gains are 1. If the board
|
||||
* supports no gains at all then AD_NGAINS_GET will return a 0.
|
||||
*
|
||||
* AD_NGAINS_GET: Return the number of gains the board supports
|
||||
*
|
||||
* AD_SUPPORTED_GAINS: Get the supported gains.
|
||||
* The driver will copy out "ngains" doubles,
|
||||
* where "ngains" is obtained with AD_NGAINS_GET.
|
||||
*
|
||||
* AD_GAINS_SET: Set the gain list. The driver will copy in "ngains" ints.
|
||||
*
|
||||
* AD_GAINS_GET: Get the gain list. The driver will copy out "ngains" ints.
|
||||
*/
|
||||
|
||||
#define AD_NGAINS_GET _IOR('A', 3, int)
|
||||
#define AD_NCHANS_GET _IOR('A', 4, int)
|
||||
#define AD_SUPPORTED_GAINS _IO('A', 5)
|
||||
#define AD_GAINS_SET _IO('A', 6)
|
||||
#define AD_GAINS_GET _IO('A', 7)
|
||||
|
||||
#endif /* !_SYS_DATAACQ_H_ */
|
||||
Loading…
Reference in New Issue
Block a user