pcmuio.c revision 976fe5ab27e682d3dbfec26517a8a248638af07d
16baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 26baef150380d561a4d695a6be4fc509821c23611Calin Culianu comedi/drivers/pcmuio.c 36baef150380d561a4d695a6be4fc509821c23611Calin Culianu Driver for Winsystems PC-104 based 48-channel and 96-channel DIO boards. 46baef150380d561a4d695a6be4fc509821c23611Calin Culianu 56baef150380d561a4d695a6be4fc509821c23611Calin Culianu COMEDI - Linux Control and Measurement Device Interface 66baef150380d561a4d695a6be4fc509821c23611Calin Culianu Copyright (C) 2006 Calin A. Culianu <calin@ajvar.org> 76baef150380d561a4d695a6be4fc509821c23611Calin Culianu 86baef150380d561a4d695a6be4fc509821c23611Calin Culianu This program is free software; you can redistribute it and/or modify 96baef150380d561a4d695a6be4fc509821c23611Calin Culianu it under the terms of the GNU General Public License as published by 106baef150380d561a4d695a6be4fc509821c23611Calin Culianu the Free Software Foundation; either version 2 of the License, or 116baef150380d561a4d695a6be4fc509821c23611Calin Culianu (at your option) any later version. 126baef150380d561a4d695a6be4fc509821c23611Calin Culianu 136baef150380d561a4d695a6be4fc509821c23611Calin Culianu This program is distributed in the hope that it will be useful, 146baef150380d561a4d695a6be4fc509821c23611Calin Culianu but WITHOUT ANY WARRANTY; without even the implied warranty of 156baef150380d561a4d695a6be4fc509821c23611Calin Culianu MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 166baef150380d561a4d695a6be4fc509821c23611Calin Culianu GNU General Public License for more details. 176baef150380d561a4d695a6be4fc509821c23611Calin Culianu 186baef150380d561a4d695a6be4fc509821c23611Calin Culianu You should have received a copy of the GNU General Public License 196baef150380d561a4d695a6be4fc509821c23611Calin Culianu along with this program; if not, write to the Free Software 206baef150380d561a4d695a6be4fc509821c23611Calin Culianu Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 216baef150380d561a4d695a6be4fc509821c23611Calin Culianu*/ 226baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 236baef150380d561a4d695a6be4fc509821c23611Calin CulianuDriver: pcmuio 246baef150380d561a4d695a6be4fc509821c23611Calin CulianuDescription: A driver for the PCM-UIO48A and PCM-UIO96A boards from Winsystems. 256baef150380d561a4d695a6be4fc509821c23611Calin CulianuDevices: [Winsystems] PCM-UIO48A (pcmuio48), PCM-UIO96A (pcmuio96) 266baef150380d561a4d695a6be4fc509821c23611Calin CulianuAuthor: Calin Culianu <calin@ajvar.org> 276baef150380d561a4d695a6be4fc509821c23611Calin CulianuUpdated: Fri, 13 Jan 2006 12:01:01 -0500 286baef150380d561a4d695a6be4fc509821c23611Calin CulianuStatus: works 296baef150380d561a4d695a6be4fc509821c23611Calin Culianu 306baef150380d561a4d695a6be4fc509821c23611Calin CulianuA driver for the relatively straightforward-to-program PCM-UIO48A and 316baef150380d561a4d695a6be4fc509821c23611Calin CulianuPCM-UIO96A boards from Winsystems. These boards use either one or two 326baef150380d561a4d695a6be4fc509821c23611Calin Culianu(in the 96-DIO version) WS16C48 ASIC HighDensity I/O Chips (HDIO). 336baef150380d561a4d695a6be4fc509821c23611Calin CulianuThis chip is interesting in that each I/O line is individually 346baef150380d561a4d695a6be4fc509821c23611Calin Culianuprogrammable for INPUT or OUTPUT (thus comedi_dio_config can be done 356baef150380d561a4d695a6be4fc509821c23611Calin Culianuon a per-channel basis). Also, each chip supports edge-triggered 366baef150380d561a4d695a6be4fc509821c23611Calin Culianuinterrupts for the first 24 I/O lines. Of course, since the 376baef150380d561a4d695a6be4fc509821c23611Calin Culianu96-channel version of the board has two ASICs, it can detect polarity 386baef150380d561a4d695a6be4fc509821c23611Calin Culianuchanges on up to 48 I/O lines. Since this is essentially an (non-PnP) 396baef150380d561a4d695a6be4fc509821c23611Calin CulianuISA board, I/O Address and IRQ selection are done through jumpers on 406baef150380d561a4d695a6be4fc509821c23611Calin Culianuthe board. You need to pass that information to this driver as the 416baef150380d561a4d695a6be4fc509821c23611Calin Culianufirst and second comedi_config option, respectively. Note that the 426baef150380d561a4d695a6be4fc509821c23611Calin Culianu48-channel version uses 16 bytes of IO memory and the 96-channel 436baef150380d561a4d695a6be4fc509821c23611Calin Culianuversion uses 32-bytes (in case you are worried about conflicts). The 446baef150380d561a4d695a6be4fc509821c23611Calin Culianu48-channel board is split into two 24-channel comedi subdevices. 456baef150380d561a4d695a6be4fc509821c23611Calin CulianuThe 96-channel board is split into 4 24-channel DIO subdevices. 466baef150380d561a4d695a6be4fc509821c23611Calin Culianu 476baef150380d561a4d695a6be4fc509821c23611Calin CulianuNote that IRQ support has been added, but it is untested. 486baef150380d561a4d695a6be4fc509821c23611Calin Culianu 496baef150380d561a4d695a6be4fc509821c23611Calin CulianuTo use edge-detection IRQ support, pass the IRQs of both ASICS 506baef150380d561a4d695a6be4fc509821c23611Calin Culianu(for the 96 channel version) or just 1 ASIC (for 48-channel version). 516baef150380d561a4d695a6be4fc509821c23611Calin CulianuThen, use use comedi_commands with TRIG_NOW. 526baef150380d561a4d695a6be4fc509821c23611Calin CulianuYour callback will be called each time an edge is triggered, and the data 536baef150380d561a4d695a6be4fc509821c23611Calin Culianuvalues will be two sample_t's, which should be concatenated to form one 546baef150380d561a4d695a6be4fc509821c23611Calin Culianu32-bit unsigned int. This value is the mask of channels that had 556baef150380d561a4d695a6be4fc509821c23611Calin Culianuedges detected from your channel list. Note that the bits positions 566baef150380d561a4d695a6be4fc509821c23611Calin Culianuin the mask correspond to positions in your chanlist when you specified 576baef150380d561a4d695a6be4fc509821c23611Calin Culianuthe command and *not* channel id's! 586baef150380d561a4d695a6be4fc509821c23611Calin Culianu 596baef150380d561a4d695a6be4fc509821c23611Calin CulianuTo set the polarity of the edge-detection interrupts pass a nonzero value for 606baef150380d561a4d695a6be4fc509821c23611Calin Culianueither CR_RANGE or CR_AREF for edge-up polarity, or a zero value for both 616baef150380d561a4d695a6be4fc509821c23611Calin CulianuCR_RANGE and CR_AREF if you want edge-down polarity. 626baef150380d561a4d695a6be4fc509821c23611Calin Culianu 636baef150380d561a4d695a6be4fc509821c23611Calin CulianuIn the 48-channel version: 646baef150380d561a4d695a6be4fc509821c23611Calin Culianu 656baef150380d561a4d695a6be4fc509821c23611Calin CulianuOn subdev 0, the first 24 channels channels are edge-detect channels. 666baef150380d561a4d695a6be4fc509821c23611Calin Culianu 676baef150380d561a4d695a6be4fc509821c23611Calin CulianuIn the 96-channel board you have the collowing channels that can do edge detection: 686baef150380d561a4d695a6be4fc509821c23611Calin Culianu 696baef150380d561a4d695a6be4fc509821c23611Calin Culianusubdev 0, channels 0-24 (first 24 channels of 1st ASIC) 706baef150380d561a4d695a6be4fc509821c23611Calin Culianusubdev 2, channels 0-24 (first 24 channels of 2nd ASIC) 716baef150380d561a4d695a6be4fc509821c23611Calin Culianu 726baef150380d561a4d695a6be4fc509821c23611Calin CulianuConfiguration Options: 736baef150380d561a4d695a6be4fc509821c23611Calin Culianu [0] - I/O port base address 746baef150380d561a4d695a6be4fc509821c23611Calin Culianu [1] - IRQ (for first ASIC, or first 24 channels) 756baef150380d561a4d695a6be4fc509821c23611Calin Culianu [2] - IRQ for second ASIC (pcmuio96 only - IRQ for chans 48-72 .. can be the same as first irq!) 766baef150380d561a4d695a6be4fc509821c23611Calin Culianu*/ 776baef150380d561a4d695a6be4fc509821c23611Calin Culianu 7825436dc9d84f1be60ff549c9ab712bba2835f284Greg Kroah-Hartman#include <linux/interrupt.h> 795a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 806baef150380d561a4d695a6be4fc509821c23611Calin Culianu#include "../comedidev.h" 810b8f754a6220158f2348bc6eae2772bc64bc98a2Bill Pemberton#include "pcm_common.h" 826baef150380d561a4d695a6be4fc509821c23611Calin Culianu 836baef150380d561a4d695a6be4fc509821c23611Calin Culianu#include <linux/pci.h> /* for PCI devices */ 846baef150380d561a4d695a6be4fc509821c23611Calin Culianu 856baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define CHANS_PER_PORT 8 866baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define PORTS_PER_ASIC 6 876baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define INTR_PORTS_PER_ASIC 3 886baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define MAX_CHANS_PER_SUBDEV 24 /* number of channels per comedi subdevice */ 896baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define PORTS_PER_SUBDEV (MAX_CHANS_PER_SUBDEV/CHANS_PER_PORT) 906baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define CHANS_PER_ASIC (CHANS_PER_PORT*PORTS_PER_ASIC) 916baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define INTR_CHANS_PER_ASIC 24 926baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define INTR_PORTS_PER_SUBDEV (INTR_CHANS_PER_ASIC/CHANS_PER_PORT) 936baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define MAX_DIO_CHANS (PORTS_PER_ASIC*2*CHANS_PER_PORT) 946baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define MAX_ASICS (MAX_DIO_CHANS/CHANS_PER_ASIC) 956baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define SDEV_NO ((int)(s - dev->subdevices)) 966baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define CALC_N_SUBDEVS(nchans) ((nchans)/MAX_CHANS_PER_SUBDEV + (!!((nchans)%MAX_CHANS_PER_SUBDEV)) /*+ (nchans > INTR_CHANS_PER_ASIC ? 2 : 1)*/) 976baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* IO Memory sizes */ 986baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define ASIC_IOSIZE (0x10) 996baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define PCMUIO48_IOSIZE ASIC_IOSIZE 1006baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define PCMUIO96_IOSIZE (ASIC_IOSIZE*2) 1016baef150380d561a4d695a6be4fc509821c23611Calin Culianu 1026baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* Some offsets - these are all in the 16byte IO memory offset from 1036baef150380d561a4d695a6be4fc509821c23611Calin Culianu the base address. Note that there is a paging scheme to swap out 1046baef150380d561a4d695a6be4fc509821c23611Calin Culianu offsets 0x8-0xA using the PAGELOCK register. See the table below. 1056baef150380d561a4d695a6be4fc509821c23611Calin Culianu 1066baef150380d561a4d695a6be4fc509821c23611Calin Culianu Register(s) Pages R/W? Description 1076baef150380d561a4d695a6be4fc509821c23611Calin Culianu -------------------------------------------------------------- 1086baef150380d561a4d695a6be4fc509821c23611Calin Culianu REG_PORTx All R/W Read/Write/Configure IO 1096baef150380d561a4d695a6be4fc509821c23611Calin Culianu REG_INT_PENDING All ReadOnly Quickly see which INT_IDx has int. 1106baef150380d561a4d695a6be4fc509821c23611Calin Culianu REG_PAGELOCK All WriteOnly Select a page 1116baef150380d561a4d695a6be4fc509821c23611Calin Culianu REG_POLx Pg. 1 only WriteOnly Select edge-detection polarity 1126baef150380d561a4d695a6be4fc509821c23611Calin Culianu REG_ENABx Pg. 2 only WriteOnly Enable/Disable edge-detect. int. 1136baef150380d561a4d695a6be4fc509821c23611Calin Culianu REG_INT_IDx Pg. 3 only R/W See which ports/bits have ints. 1146baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 1156baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_PORT0 0x0 1166baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_PORT1 0x1 1176baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_PORT2 0x2 1186baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_PORT3 0x3 1196baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_PORT4 0x4 1206baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_PORT5 0x5 1216baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_INT_PENDING 0x6 1226baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_PAGELOCK 0x7 /* page selector register, upper 2 bits select a page 1236baef150380d561a4d695a6be4fc509821c23611Calin Culianu and bits 0-5 are used to 'lock down' a particular 1246baef150380d561a4d695a6be4fc509821c23611Calin Culianu port above to make it readonly. */ 1256baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_POL0 0x8 1266baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_POL1 0x9 1276baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_POL2 0xA 1286baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_ENAB0 0x8 1296baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_ENAB1 0x9 1306baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_ENAB2 0xA 1316baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_INT_ID0 0x8 1326baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_INT_ID1 0x9 1336baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_INT_ID2 0xA 1346baef150380d561a4d695a6be4fc509821c23611Calin Culianu 1356baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define NUM_PAGED_REGS 3 1366baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define NUM_PAGES 4 1376baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define FIRST_PAGED_REG 0x8 1386baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_PAGE_BITOFFSET 6 1396baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_LOCK_BITOFFSET 0 1406baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_PAGE_MASK (~((0x1<<REG_PAGE_BITOFFSET)-1)) 1416baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define REG_LOCK_MASK ~(REG_PAGE_MASK) 1426baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define PAGE_POL 1 1436baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define PAGE_ENAB 2 1446baef150380d561a4d695a6be4fc509821c23611Calin Culianu#define PAGE_INT_ID 3 1456baef150380d561a4d695a6be4fc509821c23611Calin Culianu 1466baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 1476baef150380d561a4d695a6be4fc509821c23611Calin Culianu * Board descriptions for two imaginary boards. Describing the 1486baef150380d561a4d695a6be4fc509821c23611Calin Culianu * boards in this way is optional, and completely driver-dependent. 1496baef150380d561a4d695a6be4fc509821c23611Calin Culianu * Some drivers use arrays such as this, other do not. 1506baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 15170a6001aeffeaa12f2a1c21470e8f3bdfb6ef8e7Bill Pembertonstruct pcmuio_board { 1526baef150380d561a4d695a6be4fc509821c23611Calin Culianu const char *name; 1536baef150380d561a4d695a6be4fc509821c23611Calin Culianu const int num_asics; 1546baef150380d561a4d695a6be4fc509821c23611Calin Culianu const int num_channels_per_port; 1556baef150380d561a4d695a6be4fc509821c23611Calin Culianu const int num_ports; 15670a6001aeffeaa12f2a1c21470e8f3bdfb6ef8e7Bill Pemberton}; 1576baef150380d561a4d695a6be4fc509821c23611Calin Culianu 15870a6001aeffeaa12f2a1c21470e8f3bdfb6ef8e7Bill Pembertonstatic const struct pcmuio_board pcmuio_boards[] = { 1596baef150380d561a4d695a6be4fc509821c23611Calin Culianu { 1600a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "pcmuio48", 1610a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .num_asics = 1, 1620a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .num_ports = 6, 1630a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 1646baef150380d561a4d695a6be4fc509821c23611Calin Culianu { 1650a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .name = "pcmuio96", 1660a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .num_asics = 2, 1670a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral .num_ports = 12, 1680a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral }, 1696baef150380d561a4d695a6be4fc509821c23611Calin Culianu}; 1706baef150380d561a4d695a6be4fc509821c23611Calin Culianu 1716baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 1726baef150380d561a4d695a6be4fc509821c23611Calin Culianu * Useful for shorthand access to the particular board structure 1736baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 17470a6001aeffeaa12f2a1c21470e8f3bdfb6ef8e7Bill Pemberton#define thisboard ((const struct pcmuio_board *)dev->board_ptr) 1756baef150380d561a4d695a6be4fc509821c23611Calin Culianu 1766baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* this structure is for data unique to this subdevice. */ 177e15849e54405152087cd343437747db8d931fcd7Bill Pembertonstruct pcmuio_subdev_private { 1786baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* mapping of halfwords (bytes) in port/chanarray to iobase */ 1796baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long iobases[PORTS_PER_SUBDEV]; 1806baef150380d561a4d695a6be4fc509821c23611Calin Culianu 1816baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* The below is only used for intr subdevices */ 1826baef150380d561a4d695a6be4fc509821c23611Calin Culianu struct { 1836baef150380d561a4d695a6be4fc509821c23611Calin Culianu int asic; /* if non-negative, this subdev has an interrupt asic */ 1846baef150380d561a4d695a6be4fc509821c23611Calin Culianu int first_chan; /* if nonnegative, the first channel id for 1856baef150380d561a4d695a6be4fc509821c23611Calin Culianu interrupts. */ 1866baef150380d561a4d695a6be4fc509821c23611Calin Culianu int num_asic_chans; /* the number of asic channels in this subdev 1876baef150380d561a4d695a6be4fc509821c23611Calin Culianu that have interrutps */ 1886baef150380d561a4d695a6be4fc509821c23611Calin Culianu int asic_chan; /* if nonnegative, the first channel id with 1896baef150380d561a4d695a6be4fc509821c23611Calin Culianu respect to the asic that has interrupts */ 1906baef150380d561a4d695a6be4fc509821c23611Calin Culianu int enabled_mask; /* subdev-relative channel mask for channels 1916baef150380d561a4d695a6be4fc509821c23611Calin Culianu we are interested in */ 1926baef150380d561a4d695a6be4fc509821c23611Calin Culianu int active; 1936baef150380d561a4d695a6be4fc509821c23611Calin Culianu int stop_count; 1946baef150380d561a4d695a6be4fc509821c23611Calin Culianu int continuous; 1956baef150380d561a4d695a6be4fc509821c23611Calin Culianu spinlock_t spinlock; 1966baef150380d561a4d695a6be4fc509821c23611Calin Culianu } intr; 197e15849e54405152087cd343437747db8d931fcd7Bill Pemberton}; 1986baef150380d561a4d695a6be4fc509821c23611Calin Culianu 1996baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* this structure is for data unique to this hardware driver. If 2006baef150380d561a4d695a6be4fc509821c23611Calin Culianu several hardware drivers keep similar information in this structure, 20171b5f4f11971dea972832ad63a994c7e5b45db6bBill Pemberton feel free to suggest moving the variable to the struct comedi_device struct. */ 202055f6636d9eb27bc13236e07739e019496c21221Bill Pembertonstruct pcmuio_private { 2036baef150380d561a4d695a6be4fc509821c23611Calin Culianu struct { 2046baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned char pagelock; /* current page and lock */ 2056baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned char pol[NUM_PAGED_REGS]; /* shadow of POLx registers */ 2066baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned char enab[NUM_PAGED_REGS]; /* shadow of ENABx registers */ 2076baef150380d561a4d695a6be4fc509821c23611Calin Culianu int num; 2086baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long iobase; 2096baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned int irq; 2106baef150380d561a4d695a6be4fc509821c23611Calin Culianu spinlock_t spinlock; 2116baef150380d561a4d695a6be4fc509821c23611Calin Culianu } asics[MAX_ASICS]; 212e15849e54405152087cd343437747db8d931fcd7Bill Pemberton struct pcmuio_subdev_private *sprivs; 213055f6636d9eb27bc13236e07739e019496c21221Bill Pemberton}; 2146baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2156baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 2166baef150380d561a4d695a6be4fc509821c23611Calin Culianu * most drivers define the following macro to make it easy to 2176baef150380d561a4d695a6be4fc509821c23611Calin Culianu * access the private structure. 2186baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 219055f6636d9eb27bc13236e07739e019496c21221Bill Pemberton#define devpriv ((struct pcmuio_private *)dev->private) 220e15849e54405152087cd343437747db8d931fcd7Bill Pemberton#define subpriv ((struct pcmuio_subdev_private *)s->private) 2216baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 222139dfbdfacb02e3ef3df936d2fabd1ad5f14ea88Bill Pemberton * The struct comedi_driver structure tells the Comedi core module 2236baef150380d561a4d695a6be4fc509821c23611Calin Culianu * which functions to call to configure/deconfigure (attach/detach) 2246baef150380d561a4d695a6be4fc509821c23611Calin Culianu * the board, and also about the kernel module that contains 2256baef150380d561a4d695a6be4fc509821c23611Calin Culianu * the device code. 2266baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 2270a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int pcmuio_attach(struct comedi_device *dev, 2280a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_devconfig *it); 229da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int pcmuio_detach(struct comedi_device *dev); 2306baef150380d561a4d695a6be4fc509821c23611Calin Culianu 231139dfbdfacb02e3ef3df936d2fabd1ad5f14ea88Bill Pembertonstatic struct comedi_driver driver = { 23268c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .driver_name = "pcmuio", 23368c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .module = THIS_MODULE, 23468c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .attach = pcmuio_attach, 23568c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .detach = pcmuio_detach, 2366baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* It is not necessary to implement the following members if you are 2376baef150380d561a4d695a6be4fc509821c23611Calin Culianu * writing a driver for a ISA PnP or PCI card */ 2386baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Most drivers will support multiple types of boards by 2396baef150380d561a4d695a6be4fc509821c23611Calin Culianu * having an array of board structures. These were defined 2406baef150380d561a4d695a6be4fc509821c23611Calin Culianu * in pcmuio_boards[] above. Note that the element 'name' 2416baef150380d561a4d695a6be4fc509821c23611Calin Culianu * was first in the structure -- Comedi uses this fact to 2426baef150380d561a4d695a6be4fc509821c23611Calin Culianu * extract the name of the board without knowing any details 2436baef150380d561a4d695a6be4fc509821c23611Calin Culianu * about the structure except for its length. 2446baef150380d561a4d695a6be4fc509821c23611Calin Culianu * When a device is attached (by comedi_config), the name 2456baef150380d561a4d695a6be4fc509821c23611Calin Culianu * of the device is given to Comedi, and Comedi tries to 2466baef150380d561a4d695a6be4fc509821c23611Calin Culianu * match it by going through the list of board names. If 2476baef150380d561a4d695a6be4fc509821c23611Calin Culianu * there is a match, the address of the pointer is put 2486baef150380d561a4d695a6be4fc509821c23611Calin Culianu * into dev->board_ptr and driver->attach() is called. 2496baef150380d561a4d695a6be4fc509821c23611Calin Culianu * 2506baef150380d561a4d695a6be4fc509821c23611Calin Culianu * Note that these are not necessary if you can determine 2516baef150380d561a4d695a6be4fc509821c23611Calin Culianu * the type of board in software. ISA PnP, PCI, and PCMCIA 2526baef150380d561a4d695a6be4fc509821c23611Calin Culianu * devices are such boards. 2536baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 25468c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .board_name = &pcmuio_boards[0].name, 25568c3dbff9fc9f25872408d0e95980d41733d48d0Bill Pemberton .offset = sizeof(struct pcmuio_board), 2568629efa4cbf6f89a54a85af4b8bc31762af01800Bill Pemberton .num_names = ARRAY_SIZE(pcmuio_boards), 2576baef150380d561a4d695a6be4fc509821c23611Calin Culianu}; 2586baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2590a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int pcmuio_dio_insn_bits(struct comedi_device *dev, 2600a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 2610a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data); 2620a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int pcmuio_dio_insn_config(struct comedi_device *dev, 2630a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 2640a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data); 2656baef150380d561a4d695a6be4fc509821c23611Calin Culianu 26670265d24e3404fe798b6edd55a02016b1edb49d7Jiri Slabystatic irqreturn_t interrupt_pcmuio(int irq, void *d); 26734c43922e62708d45e9660eee4b4f1fb7b4bf2c7Bill Pembertonstatic void pcmuio_stop_intr(struct comedi_device *, struct comedi_subdevice *); 268814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic int pcmuio_cancel(struct comedi_device *dev, struct comedi_subdevice *s); 269814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic int pcmuio_cmd(struct comedi_device *dev, struct comedi_subdevice *s); 270814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic int pcmuio_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, 2710a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_cmd *cmd); 2726baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2736baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* some helper functions to deal with specifics of this device's registers */ 274814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic void init_asics(struct comedi_device *dev); /* sets up/clears ASIC chips to defaults */ 275814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic void switch_page(struct comedi_device *dev, int asic, int page); 2766baef150380d561a4d695a6be4fc509821c23611Calin Culianu#ifdef notused 277814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic void lock_port(struct comedi_device *dev, int asic, int port); 278814900c904140cfe7f3e48cabec06b3eec57e0eaBill Pembertonstatic void unlock_port(struct comedi_device *dev, int asic, int port); 2796baef150380d561a4d695a6be4fc509821c23611Calin Culianu#endif 2806baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2816baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 2826baef150380d561a4d695a6be4fc509821c23611Calin Culianu * Attach is called by the Comedi core to configure the driver 2836baef150380d561a4d695a6be4fc509821c23611Calin Culianu * for a particular board. If you specified a board_name array 2846baef150380d561a4d695a6be4fc509821c23611Calin Culianu * in the driver structure, dev->board_ptr contains that 2856baef150380d561a4d695a6be4fc509821c23611Calin Culianu * address. 2866baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 287da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int pcmuio_attach(struct comedi_device *dev, struct comedi_devconfig *it) 2886baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 28934c43922e62708d45e9660eee4b4f1fb7b4bf2c7Bill Pemberton struct comedi_subdevice *s; 2906baef150380d561a4d695a6be4fc509821c23611Calin Culianu int sdev_no, chans_left, n_subdevs, port, asic, thisasic_chanct = 0; 2916baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long iobase; 2926baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned int irq[MAX_ASICS]; 2936baef150380d561a4d695a6be4fc509821c23611Calin Culianu 2946baef150380d561a4d695a6be4fc509821c23611Calin Culianu iobase = it->options[0]; 2956baef150380d561a4d695a6be4fc509821c23611Calin Culianu irq[0] = it->options[1]; 2966baef150380d561a4d695a6be4fc509821c23611Calin Culianu irq[1] = it->options[2]; 2976baef150380d561a4d695a6be4fc509821c23611Calin Culianu 298de1201ea91d0453800ec68f959297de2b37a042eRavishankar karkala Mallikarjunayya dev_dbg(dev->hw_dev, "comedi%d: %s: io: %lx attached\n", dev->minor, 299de1201ea91d0453800ec68f959297de2b37a042eRavishankar karkala Mallikarjunayya driver.driver_name, iobase); 3006baef150380d561a4d695a6be4fc509821c23611Calin Culianu 3016baef150380d561a4d695a6be4fc509821c23611Calin Culianu dev->iobase = iobase; 3026baef150380d561a4d695a6be4fc509821c23611Calin Culianu 3036baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (!iobase || !request_region(iobase, 3040a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral thisboard->num_asics * ASIC_IOSIZE, 3050a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral driver.driver_name)) { 306de1201ea91d0453800ec68f959297de2b37a042eRavishankar karkala Mallikarjunayya dev_err(dev->hw_dev, "I/O port conflict\n"); 3076baef150380d561a4d695a6be4fc509821c23611Calin Culianu return -EIO; 3086baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 3096baef150380d561a4d695a6be4fc509821c23611Calin Culianu 3106baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 3116baef150380d561a4d695a6be4fc509821c23611Calin Culianu * Initialize dev->board_name. Note that we can use the "thisboard" 3126baef150380d561a4d695a6be4fc509821c23611Calin Culianu * macro now, since we just initialized it in the last line. 3136baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 3146baef150380d561a4d695a6be4fc509821c23611Calin Culianu dev->board_name = thisboard->name; 3156baef150380d561a4d695a6be4fc509821c23611Calin Culianu 3166baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 3176baef150380d561a4d695a6be4fc509821c23611Calin Culianu * Allocate the private structure area. alloc_private() is a 3186baef150380d561a4d695a6be4fc509821c23611Calin Culianu * convenient macro defined in comedidev.h. 3196baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 320055f6636d9eb27bc13236e07739e019496c21221Bill Pemberton if (alloc_private(dev, sizeof(struct pcmuio_private)) < 0) { 321de1201ea91d0453800ec68f959297de2b37a042eRavishankar karkala Mallikarjunayya dev_warn(dev->hw_dev, "cannot allocate private data structure\n"); 3226baef150380d561a4d695a6be4fc509821c23611Calin Culianu return -ENOMEM; 3236baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 3246baef150380d561a4d695a6be4fc509821c23611Calin Culianu 3256baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (asic = 0; asic < MAX_ASICS; ++asic) { 3266baef150380d561a4d695a6be4fc509821c23611Calin Culianu devpriv->asics[asic].num = asic; 3276baef150380d561a4d695a6be4fc509821c23611Calin Culianu devpriv->asics[asic].iobase = dev->iobase + asic * ASIC_IOSIZE; 3286baef150380d561a4d695a6be4fc509821c23611Calin Culianu devpriv->asics[asic].irq = 0; /* this gets actually set at the end of 3296baef150380d561a4d695a6be4fc509821c23611Calin Culianu this function when we 3305f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman request_irqs */ 3316baef150380d561a4d695a6be4fc509821c23611Calin Culianu spin_lock_init(&devpriv->asics[asic].spinlock); 3326baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 3336baef150380d561a4d695a6be4fc509821c23611Calin Culianu 3346baef150380d561a4d695a6be4fc509821c23611Calin Culianu chans_left = CHANS_PER_ASIC * thisboard->num_asics; 3356baef150380d561a4d695a6be4fc509821c23611Calin Culianu n_subdevs = CALC_N_SUBDEVS(chans_left); 3366baef150380d561a4d695a6be4fc509821c23611Calin Culianu devpriv->sprivs = 3370a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral kcalloc(n_subdevs, sizeof(struct pcmuio_subdev_private), 3380a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral GFP_KERNEL); 3396baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (!devpriv->sprivs) { 340de1201ea91d0453800ec68f959297de2b37a042eRavishankar karkala Mallikarjunayya dev_warn(dev->hw_dev, "cannot allocate subdevice private data structures\n"); 3416baef150380d561a4d695a6be4fc509821c23611Calin Culianu return -ENOMEM; 3426baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 3436baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* 3446baef150380d561a4d695a6be4fc509821c23611Calin Culianu * Allocate the subdevice structures. alloc_subdevice() is a 3456baef150380d561a4d695a6be4fc509821c23611Calin Culianu * convenient macro defined in comedidev.h. 3466baef150380d561a4d695a6be4fc509821c23611Calin Culianu * 3476baef150380d561a4d695a6be4fc509821c23611Calin Culianu * Allocate 2 subdevs (32 + 16 DIO lines) or 3 32 DIO subdevs for the 3486baef150380d561a4d695a6be4fc509821c23611Calin Culianu * 96-channel version of the board. 3496baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 3506baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (alloc_subdevices(dev, n_subdevs) < 0) { 351de1201ea91d0453800ec68f959297de2b37a042eRavishankar karkala Mallikarjunayya dev_dbg(dev->hw_dev, "cannot allocate subdevice data structures\n"); 3526baef150380d561a4d695a6be4fc509821c23611Calin Culianu return -ENOMEM; 3536baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 3546baef150380d561a4d695a6be4fc509821c23611Calin Culianu 3556baef150380d561a4d695a6be4fc509821c23611Calin Culianu port = 0; 3566baef150380d561a4d695a6be4fc509821c23611Calin Culianu asic = 0; 3576baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (sdev_no = 0; sdev_no < (int)dev->n_subdevices; ++sdev_no) { 3586baef150380d561a4d695a6be4fc509821c23611Calin Culianu int byte_no; 3596baef150380d561a4d695a6be4fc509821c23611Calin Culianu 3606baef150380d561a4d695a6be4fc509821c23611Calin Culianu s = dev->subdevices + sdev_no; 3616baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->private = devpriv->sprivs + sdev_no; 3626baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->maxdata = 1; 3636baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->range_table = &range_digital; 3646baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->subdev_flags = SDF_READABLE | SDF_WRITABLE; 3656baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->type = COMEDI_SUBD_DIO; 3666baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->insn_bits = pcmuio_dio_insn_bits; 3676baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->insn_config = pcmuio_dio_insn_config; 368214e7b5c8281bf41238f575128e4fec5652ed797Bill Pemberton s->n_chan = min(chans_left, MAX_CHANS_PER_SUBDEV); 3696baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.asic = -1; 3706baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.first_chan = -1; 3716baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.asic_chan = -1; 3726baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.num_asic_chans = -1; 3736baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.active = 0; 3746baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->len_chanlist = 1; 3756baef150380d561a4d695a6be4fc509821c23611Calin Culianu 3766baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* save the ioport address for each 'port' of 8 channels in the 3776baef150380d561a4d695a6be4fc509821c23611Calin Culianu subdevice */ 3786baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (byte_no = 0; byte_no < PORTS_PER_SUBDEV; ++byte_no, ++port) { 3796baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (port >= PORTS_PER_ASIC) { 3806baef150380d561a4d695a6be4fc509821c23611Calin Culianu port = 0; 3816baef150380d561a4d695a6be4fc509821c23611Calin Culianu ++asic; 3826baef150380d561a4d695a6be4fc509821c23611Calin Culianu thisasic_chanct = 0; 3836baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 3846baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->iobases[byte_no] = 3850a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral devpriv->asics[asic].iobase + port; 3866baef150380d561a4d695a6be4fc509821c23611Calin Culianu 3876baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (thisasic_chanct < 3880a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral CHANS_PER_PORT * INTR_PORTS_PER_ASIC 3890a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral && subpriv->intr.asic < 0) { 3906baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* this is an interrupt subdevice, so setup the struct */ 3916baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.asic = asic; 3926baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.active = 0; 3936baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.stop_count = 0; 3946baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.first_chan = byte_no * 8; 3956baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.asic_chan = thisasic_chanct; 3966baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.num_asic_chans = 3970a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral s->n_chan - subpriv->intr.first_chan; 3986baef150380d561a4d695a6be4fc509821c23611Calin Culianu dev->read_subdev = s; 3996baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->subdev_flags |= SDF_CMD_READ; 4006baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->cancel = pcmuio_cancel; 4016baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->do_cmd = pcmuio_cmd; 4026baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->do_cmdtest = pcmuio_cmdtest; 4036baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->len_chanlist = subpriv->intr.num_asic_chans; 4046baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4056baef150380d561a4d695a6be4fc509821c23611Calin Culianu thisasic_chanct += CHANS_PER_PORT; 4066baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4076baef150380d561a4d695a6be4fc509821c23611Calin Culianu spin_lock_init(&subpriv->intr.spinlock); 4086baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4096baef150380d561a4d695a6be4fc509821c23611Calin Culianu chans_left -= s->n_chan; 4106baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4116baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (!chans_left) { 4126baef150380d561a4d695a6be4fc509821c23611Calin Culianu asic = 0; /* reset the asic to our first asic, to do intr subdevs */ 4136baef150380d561a4d695a6be4fc509821c23611Calin Culianu port = 0; 4146baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4156baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4166baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4176baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4186baef150380d561a4d695a6be4fc509821c23611Calin Culianu init_asics(dev); /* clear out all the registers, basically */ 4196baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4206baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (asic = 0; irq[0] && asic < MAX_ASICS; ++asic) { 4216baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (irq[asic] 4220a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral && request_irq(irq[asic], interrupt_pcmuio, 4230a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral IRQF_SHARED, thisboard->name, dev)) { 4246baef150380d561a4d695a6be4fc509821c23611Calin Culianu int i; 4256baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* unroll the allocated irqs.. */ 4266baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (i = asic - 1; i >= 0; --i) { 4275f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman free_irq(irq[i], dev); 4286baef150380d561a4d695a6be4fc509821c23611Calin Culianu devpriv->asics[i].irq = irq[i] = 0; 4296baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4306baef150380d561a4d695a6be4fc509821c23611Calin Culianu irq[asic] = 0; 4316baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4326baef150380d561a4d695a6be4fc509821c23611Calin Culianu devpriv->asics[asic].irq = irq[asic]; 4336baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4346baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4356baef150380d561a4d695a6be4fc509821c23611Calin Culianu dev->irq = irq[0]; /* grr.. wish comedi dev struct supported multiple 4366baef150380d561a4d695a6be4fc509821c23611Calin Culianu irqs.. */ 4376baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4386baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (irq[0]) { 439deb04291a1eaa20c4565a64e894cdeb3e311d97bRavishankar karkala Mallikarjunayya dev_dbg(dev->hw_dev, "irq: %u\n", irq[0]); 4406baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (irq[1] && thisboard->num_asics == 2) 441deb04291a1eaa20c4565a64e894cdeb3e311d97bRavishankar karkala Mallikarjunayya dev_dbg(dev->hw_dev, "second ASIC irq: %u\n", irq[1]); 4426baef150380d561a4d695a6be4fc509821c23611Calin Culianu } else { 443deb04291a1eaa20c4565a64e894cdeb3e311d97bRavishankar karkala Mallikarjunayya dev_dbg(dev->hw_dev, "(IRQ mode disabled)\n"); 4446baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4456baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4466baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4476baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 1; 4486baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 4496baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4506baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 4516baef150380d561a4d695a6be4fc509821c23611Calin Culianu * _detach is called to deconfigure a device. It should deallocate 4526baef150380d561a4d695a6be4fc509821c23611Calin Culianu * resources. 4536baef150380d561a4d695a6be4fc509821c23611Calin Culianu * This function is also called when _attach() fails, so it should be 4546baef150380d561a4d695a6be4fc509821c23611Calin Culianu * careful not to release resources that were not necessarily 4556baef150380d561a4d695a6be4fc509821c23611Calin Culianu * allocated by _attach(). dev->private and dev->subdevices are 4566baef150380d561a4d695a6be4fc509821c23611Calin Culianu * deallocated automatically by the core. 4576baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 458da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int pcmuio_detach(struct comedi_device *dev) 4596baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 4606baef150380d561a4d695a6be4fc509821c23611Calin Culianu int i; 4616baef150380d561a4d695a6be4fc509821c23611Calin Culianu 462deb04291a1eaa20c4565a64e894cdeb3e311d97bRavishankar karkala Mallikarjunayya dev_dbg(dev->hw_dev, "comedi%d: %s: remove\n", dev->minor, 463deb04291a1eaa20c4565a64e894cdeb3e311d97bRavishankar karkala Mallikarjunayya driver.driver_name); 4646baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (dev->iobase) 4656baef150380d561a4d695a6be4fc509821c23611Calin Culianu release_region(dev->iobase, ASIC_IOSIZE * thisboard->num_asics); 4666baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4676baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (i = 0; i < MAX_ASICS; ++i) { 4686baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (devpriv->asics[i].irq) 4695f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman free_irq(devpriv->asics[i].irq, dev); 4706baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 4716baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4726baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (devpriv && devpriv->sprivs) 4736baef150380d561a4d695a6be4fc509821c23611Calin Culianu kfree(devpriv->sprivs); 4746baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4756baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 0; 4766baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 4776baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4786baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* DIO devices are slightly special. Although it is possible to 4796baef150380d561a4d695a6be4fc509821c23611Calin Culianu * implement the insn_read/insn_write interface, it is much more 4806baef150380d561a4d695a6be4fc509821c23611Calin Culianu * useful to applications if you implement the insn_bits interface. 4816baef150380d561a4d695a6be4fc509821c23611Calin Culianu * This allows packed reading/writing of the DIO channels. The 4826baef150380d561a4d695a6be4fc509821c23611Calin Culianu * comedi core can convert between insn_bits and insn_read/write */ 4830a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int pcmuio_dio_insn_bits(struct comedi_device *dev, 4840a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 4850a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data) 4866baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 4876baef150380d561a4d695a6be4fc509821c23611Calin Culianu int byte_no; 4886baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (insn->n != 2) 4896baef150380d561a4d695a6be4fc509821c23611Calin Culianu return -EINVAL; 4906baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4916baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* NOTE: 4926baef150380d561a4d695a6be4fc509821c23611Calin Culianu reading a 0 means this channel was high 4936baef150380d561a4d695a6be4fc509821c23611Calin Culianu writine a 0 sets the channel high 4946baef150380d561a4d695a6be4fc509821c23611Calin Culianu reading a 1 means this channel was low 4956baef150380d561a4d695a6be4fc509821c23611Calin Culianu writing a 1 means set this channel low 4966baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4976baef150380d561a4d695a6be4fc509821c23611Calin Culianu Therefore everything is always inverted. */ 4986baef150380d561a4d695a6be4fc509821c23611Calin Culianu 4996baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* The insn data is a mask in data[0] and the new data 5006baef150380d561a4d695a6be4fc509821c23611Calin Culianu * in data[1], each channel cooresponding to a bit. */ 5016baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5026baef150380d561a4d695a6be4fc509821c23611Calin Culianu#ifdef DAMMIT_ITS_BROKEN 5036baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* DEBUG */ 504976fe5ab27e682d3dbfec26517a8a248638af07dRavishankar karkala Mallikarjunayya dev_dbg(dev->hw_dev, "write mask: %08x data: %08x\n", data[0], 505976fe5ab27e682d3dbfec26517a8a248638af07dRavishankar karkala Mallikarjunayya data[1]); 5066baef150380d561a4d695a6be4fc509821c23611Calin Culianu#endif 5076baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5086baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->state = 0; 5096baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5106baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (byte_no = 0; byte_no < s->n_chan / CHANS_PER_PORT; ++byte_no) { 5116baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* address of 8-bit port */ 5126baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long ioaddr = subpriv->iobases[byte_no], 5130a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral /* bit offset of port in 32-bit doubleword */ 5140a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral offset = byte_no * 8; 5156baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* this 8-bit port's data */ 5166baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned char byte = 0, 5170a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral /* The write mask for this port (if any) */ 5180a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral write_mask_byte = (data[0] >> offset) & 0xff, 5190a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral /* The data byte for this port */ 5200a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral data_byte = (data[1] >> offset) & 0xff; 5216baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5226baef150380d561a4d695a6be4fc509821c23611Calin Culianu byte = inb(ioaddr); /* read all 8-bits for this port */ 5236baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5246baef150380d561a4d695a6be4fc509821c23611Calin Culianu#ifdef DAMMIT_ITS_BROKEN 5256baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* DEBUG */ 5260a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 5270a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral ("byte %d wmb %02x db %02x offset %02d io %04x, data_in %02x ", 5280a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral byte_no, (unsigned)write_mask_byte, (unsigned)data_byte, 5290a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral offset, ioaddr, (unsigned)byte); 5306baef150380d561a4d695a6be4fc509821c23611Calin Culianu#endif 5316baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5326baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (write_mask_byte) { 5336baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* this byte has some write_bits -- so set the output lines */ 5346baef150380d561a4d695a6be4fc509821c23611Calin Culianu byte &= ~write_mask_byte; /* clear bits for write mask */ 5356baef150380d561a4d695a6be4fc509821c23611Calin Culianu byte |= ~data_byte & write_mask_byte; /* set to inverted data_byte */ 5366baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Write out the new digital output state */ 5376baef150380d561a4d695a6be4fc509821c23611Calin Culianu outb(byte, ioaddr); 5386baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 5396baef150380d561a4d695a6be4fc509821c23611Calin Culianu#ifdef DAMMIT_ITS_BROKEN 5406baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* DEBUG */ 541976fe5ab27e682d3dbfec26517a8a248638af07dRavishankar karkala Mallikarjunayya dev_dbg(dev->hw_dev, "data_out_byte %02x\n", (unsigned)byte); 5426baef150380d561a4d695a6be4fc509821c23611Calin Culianu#endif 5436baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* save the digital input lines for this byte.. */ 5446baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->state |= ((unsigned int)byte) << offset; 5456baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 5466baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5476baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* now return the DIO lines to data[1] - note they came inverted! */ 5486baef150380d561a4d695a6be4fc509821c23611Calin Culianu data[1] = ~s->state; 5496baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5506baef150380d561a4d695a6be4fc509821c23611Calin Culianu#ifdef DAMMIT_ITS_BROKEN 5516baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* DEBUG */ 552976fe5ab27e682d3dbfec26517a8a248638af07dRavishankar karkala Mallikarjunayya dev_dbg(dev->hw_dev, "s->state %08x data_out %08x\n", s->state, 553976fe5ab27e682d3dbfec26517a8a248638af07dRavishankar karkala Mallikarjunayya data[1]); 5546baef150380d561a4d695a6be4fc509821c23611Calin Culianu#endif 5556baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5566baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 2; 5576baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 5586baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5596baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* The input or output configuration of each digital line is 5606baef150380d561a4d695a6be4fc509821c23611Calin Culianu * configured by a special insn_config instruction. chanspec 5616baef150380d561a4d695a6be4fc509821c23611Calin Culianu * contains the channel to be changed, and data[0] contains the 5626baef150380d561a4d695a6be4fc509821c23611Calin Culianu * value COMEDI_INPUT or COMEDI_OUTPUT. */ 5630a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int pcmuio_dio_insn_config(struct comedi_device *dev, 5640a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s, 5650a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_insn *insn, unsigned int *data) 5666baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 5676baef150380d561a4d695a6be4fc509821c23611Calin Culianu int chan = CR_CHAN(insn->chanspec), byte_no = chan / 8, bit_no = 5680a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral chan % 8; 5696baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long ioaddr; 5706baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned char byte; 5716baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5726baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Compute ioaddr for this channel */ 5736baef150380d561a4d695a6be4fc509821c23611Calin Culianu ioaddr = subpriv->iobases[byte_no]; 5746baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5756baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* NOTE: 5766baef150380d561a4d695a6be4fc509821c23611Calin Culianu writing a 0 an IO channel's bit sets the channel to INPUT 5776baef150380d561a4d695a6be4fc509821c23611Calin Culianu and pulls the line high as well 5786baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5796baef150380d561a4d695a6be4fc509821c23611Calin Culianu writing a 1 to an IO channel's bit pulls the line low 5806baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5816baef150380d561a4d695a6be4fc509821c23611Calin Culianu All channels are implicitly always in OUTPUT mode -- but when 5826baef150380d561a4d695a6be4fc509821c23611Calin Culianu they are high they can be considered to be in INPUT mode.. 5836baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5846baef150380d561a4d695a6be4fc509821c23611Calin Culianu Thus, we only force channels low if the config request was INPUT, 5856baef150380d561a4d695a6be4fc509821c23611Calin Culianu otherwise we do nothing to the hardware. */ 5866baef150380d561a4d695a6be4fc509821c23611Calin Culianu 5876baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch (data[0]) { 5886baef150380d561a4d695a6be4fc509821c23611Calin Culianu case INSN_CONFIG_DIO_OUTPUT: 5896baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* save to io_bits -- don't actually do anything since 5906baef150380d561a4d695a6be4fc509821c23611Calin Culianu all input channels are also output channels... */ 5916baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->io_bits |= 1 << chan; 5926baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 5936baef150380d561a4d695a6be4fc509821c23611Calin Culianu case INSN_CONFIG_DIO_INPUT: 5946baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* write a 0 to the actual register representing the channel 5956baef150380d561a4d695a6be4fc509821c23611Calin Culianu to set it to 'input'. 0 means "float high". */ 5966baef150380d561a4d695a6be4fc509821c23611Calin Culianu byte = inb(ioaddr); 5976baef150380d561a4d695a6be4fc509821c23611Calin Culianu byte &= ~(1 << bit_no); 5986baef150380d561a4d695a6be4fc509821c23611Calin Culianu /**< set input channel to '0' */ 5996baef150380d561a4d695a6be4fc509821c23611Calin Culianu 6006baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* write out byte -- this is the only time we actually affect the 6016baef150380d561a4d695a6be4fc509821c23611Calin Culianu hardware as all channels are implicitly output -- but input 6026baef150380d561a4d695a6be4fc509821c23611Calin Culianu channels are set to float-high */ 6036baef150380d561a4d695a6be4fc509821c23611Calin Culianu outb(byte, ioaddr); 6046baef150380d561a4d695a6be4fc509821c23611Calin Culianu 6056baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* save to io_bits */ 6066baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->io_bits &= ~(1 << chan); 6076baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 6086baef150380d561a4d695a6be4fc509821c23611Calin Culianu 6096baef150380d561a4d695a6be4fc509821c23611Calin Culianu case INSN_CONFIG_DIO_QUERY: 61025985edcedea6396277003854657b5f3cb31a628Lucas De Marchi /* retrieve from shadow register */ 6116baef150380d561a4d695a6be4fc509821c23611Calin Culianu data[1] = 6120a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT; 6136baef150380d561a4d695a6be4fc509821c23611Calin Culianu return insn->n; 6146baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 6156baef150380d561a4d695a6be4fc509821c23611Calin Culianu 6166baef150380d561a4d695a6be4fc509821c23611Calin Culianu default: 6176baef150380d561a4d695a6be4fc509821c23611Calin Culianu return -EINVAL; 6186baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 6196baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 6206baef150380d561a4d695a6be4fc509821c23611Calin Culianu 6216baef150380d561a4d695a6be4fc509821c23611Calin Culianu return insn->n; 6226baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 6236baef150380d561a4d695a6be4fc509821c23611Calin Culianu 624da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic void init_asics(struct comedi_device *dev) 6256baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ /* sets up an 6266baef150380d561a4d695a6be4fc509821c23611Calin Culianu ASIC chip to defaults */ 6276baef150380d561a4d695a6be4fc509821c23611Calin Culianu int asic; 6286baef150380d561a4d695a6be4fc509821c23611Calin Culianu 6296baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (asic = 0; asic < thisboard->num_asics; ++asic) { 6306baef150380d561a4d695a6be4fc509821c23611Calin Culianu int port, page; 6316baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long baseaddr = dev->iobase + asic * ASIC_IOSIZE; 6326baef150380d561a4d695a6be4fc509821c23611Calin Culianu 6336baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch_page(dev, asic, 0); /* switch back to page 0 */ 6346baef150380d561a4d695a6be4fc509821c23611Calin Culianu 6356baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* first, clear all the DIO port bits */ 6366baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (port = 0; port < PORTS_PER_ASIC; ++port) 6376baef150380d561a4d695a6be4fc509821c23611Calin Culianu outb(0, baseaddr + REG_PORT0 + port); 6386baef150380d561a4d695a6be4fc509821c23611Calin Culianu 6396baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Next, clear all the paged registers for each page */ 6406baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (page = 1; page < NUM_PAGES; ++page) { 6416baef150380d561a4d695a6be4fc509821c23611Calin Culianu int reg; 6426baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* now clear all the paged registers */ 6436baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch_page(dev, asic, page); 6446baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (reg = FIRST_PAGED_REG; 6450a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral reg < FIRST_PAGED_REG + NUM_PAGED_REGS; ++reg) 6466baef150380d561a4d695a6be4fc509821c23611Calin Culianu outb(0, baseaddr + reg); 6476baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 6486baef150380d561a4d695a6be4fc509821c23611Calin Culianu 6496baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* DEBUG set rising edge interrupts on port0 of both asics */ 6506baef150380d561a4d695a6be4fc509821c23611Calin Culianu /*switch_page(dev, asic, PAGE_POL); 6516baef150380d561a4d695a6be4fc509821c23611Calin Culianu outb(0xff, baseaddr + REG_POL0); 6526baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch_page(dev, asic, PAGE_ENAB); 6536baef150380d561a4d695a6be4fc509821c23611Calin Culianu outb(0xff, baseaddr + REG_ENAB0); */ 6546baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* END DEBUG */ 6556baef150380d561a4d695a6be4fc509821c23611Calin Culianu 6566baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch_page(dev, asic, 0); /* switch back to default page 0 */ 6576baef150380d561a4d695a6be4fc509821c23611Calin Culianu 6586baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 6596baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 6606baef150380d561a4d695a6be4fc509821c23611Calin Culianu 661da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic void switch_page(struct comedi_device *dev, int asic, int page) 6626baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 6636baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (asic < 0 || asic >= thisboard->num_asics) 6646baef150380d561a4d695a6be4fc509821c23611Calin Culianu return; /* paranoia */ 6656baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (page < 0 || page >= NUM_PAGES) 6666baef150380d561a4d695a6be4fc509821c23611Calin Culianu return; /* more paranoia */ 6676baef150380d561a4d695a6be4fc509821c23611Calin Culianu 6686baef150380d561a4d695a6be4fc509821c23611Calin Culianu devpriv->asics[asic].pagelock &= ~REG_PAGE_MASK; 6696baef150380d561a4d695a6be4fc509821c23611Calin Culianu devpriv->asics[asic].pagelock |= page << REG_PAGE_BITOFFSET; 6706baef150380d561a4d695a6be4fc509821c23611Calin Culianu 6716baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* now write out the shadow register */ 6726baef150380d561a4d695a6be4fc509821c23611Calin Culianu outb(devpriv->asics[asic].pagelock, 6730a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral dev->iobase + ASIC_IOSIZE * asic + REG_PAGELOCK); 6746baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 6756baef150380d561a4d695a6be4fc509821c23611Calin Culianu 6766baef150380d561a4d695a6be4fc509821c23611Calin Culianu#ifdef notused 677da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic void lock_port(struct comedi_device *dev, int asic, int port) 6786baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 6796baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (asic < 0 || asic >= thisboard->num_asics) 6806baef150380d561a4d695a6be4fc509821c23611Calin Culianu return; /* paranoia */ 6816baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (port < 0 || port >= PORTS_PER_ASIC) 6826baef150380d561a4d695a6be4fc509821c23611Calin Culianu return; /* more paranoia */ 6836baef150380d561a4d695a6be4fc509821c23611Calin Culianu 6846baef150380d561a4d695a6be4fc509821c23611Calin Culianu devpriv->asics[asic].pagelock |= 0x1 << port; 6856baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* now write out the shadow register */ 6866baef150380d561a4d695a6be4fc509821c23611Calin Culianu outb(devpriv->asics[asic].pagelock, 6870a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral dev->iobase + ASIC_IOSIZE * asic + REG_PAGELOCK); 6886baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 6896baef150380d561a4d695a6be4fc509821c23611Calin Culianu 690da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic void unlock_port(struct comedi_device *dev, int asic, int port) 6916baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 6926baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (asic < 0 || asic >= thisboard->num_asics) 6936baef150380d561a4d695a6be4fc509821c23611Calin Culianu return; /* paranoia */ 6946baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (port < 0 || port >= PORTS_PER_ASIC) 6956baef150380d561a4d695a6be4fc509821c23611Calin Culianu return; /* more paranoia */ 6966baef150380d561a4d695a6be4fc509821c23611Calin Culianu devpriv->asics[asic].pagelock &= ~(0x1 << port) | REG_LOCK_MASK; 6976baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* now write out the shadow register */ 6986baef150380d561a4d695a6be4fc509821c23611Calin Culianu outb(devpriv->asics[asic].pagelock, 6990a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral dev->iobase + ASIC_IOSIZE * asic + REG_PAGELOCK); 7006baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 7016baef150380d561a4d695a6be4fc509821c23611Calin Culianu#endif /* notused */ 7026baef150380d561a4d695a6be4fc509821c23611Calin Culianu 70370265d24e3404fe798b6edd55a02016b1edb49d7Jiri Slabystatic irqreturn_t interrupt_pcmuio(int irq, void *d) 7046baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 7056baef150380d561a4d695a6be4fc509821c23611Calin Culianu int asic, got1 = 0; 7060a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_device *dev = (struct comedi_device *)d; 7076baef150380d561a4d695a6be4fc509821c23611Calin Culianu 7086baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (asic = 0; asic < MAX_ASICS; ++asic) { 7096baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (irq == devpriv->asics[asic].irq) { 7106baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long flags; 7116baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned triggered = 0; 7126baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long iobase = devpriv->asics[asic].iobase; 7136baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* it is an interrupt for ASIC #asic */ 7146baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned char int_pend; 7156baef150380d561a4d695a6be4fc509821c23611Calin Culianu 7160a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral spin_lock_irqsave(&devpriv->asics[asic].spinlock, 7170a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral flags); 7186baef150380d561a4d695a6be4fc509821c23611Calin Culianu 7196baef150380d561a4d695a6be4fc509821c23611Calin Culianu int_pend = inb(iobase + REG_INT_PENDING) & 0x07; 7206baef150380d561a4d695a6be4fc509821c23611Calin Culianu 7216baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (int_pend) { 7226baef150380d561a4d695a6be4fc509821c23611Calin Culianu int port; 7236baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (port = 0; port < INTR_PORTS_PER_ASIC; 7240a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral ++port) { 7256baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (int_pend & (0x1 << port)) { 7266baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned char 7270a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral io_lines_with_edges = 0; 7286baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch_page(dev, asic, 7290a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral PAGE_INT_ID); 7306baef150380d561a4d695a6be4fc509821c23611Calin Culianu io_lines_with_edges = 7310a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral inb(iobase + 7326baef150380d561a4d695a6be4fc509821c23611Calin Culianu REG_INT_ID0 + port); 7336baef150380d561a4d695a6be4fc509821c23611Calin Culianu 7346baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (io_lines_with_edges) 7356baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* clear pending interrupt */ 7366baef150380d561a4d695a6be4fc509821c23611Calin Culianu outb(0, iobase + 7370a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral REG_INT_ID0 + 7380a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral port); 7396baef150380d561a4d695a6be4fc509821c23611Calin Culianu 7406baef150380d561a4d695a6be4fc509821c23611Calin Culianu triggered |= 7410a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral io_lines_with_edges << 7420a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral port * 8; 7436baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 7446baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 7456baef150380d561a4d695a6be4fc509821c23611Calin Culianu 7466baef150380d561a4d695a6be4fc509821c23611Calin Culianu ++got1; 7476baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 7486baef150380d561a4d695a6be4fc509821c23611Calin Culianu 7490a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral spin_unlock_irqrestore(&devpriv->asics[asic].spinlock, 7500a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral flags); 7516baef150380d561a4d695a6be4fc509821c23611Calin Culianu 7526baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (triggered) { 75334c43922e62708d45e9660eee4b4f1fb7b4bf2c7Bill Pemberton struct comedi_subdevice *s; 7546baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* TODO here: dispatch io lines to subdevs with commands.. */ 7550a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral printk 7560a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral ("PCMUIO DEBUG: got edge detect interrupt %d asic %d which_chans: %06x\n", 7570a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral irq, asic, triggered); 7586baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (s = dev->subdevices; 7590a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral s < dev->subdevices + dev->n_subdevices; 7600a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral ++s) { 7616baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (subpriv->intr.asic == asic) { /* this is an interrupt subdev, and it matches this asic! */ 7626baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long flags; 7636baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned oldevents; 7646baef150380d561a4d695a6be4fc509821c23611Calin Culianu 7650a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral spin_lock_irqsave(&subpriv-> 7660a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral intr.spinlock, 7670a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral flags); 7686baef150380d561a4d695a6be4fc509821c23611Calin Culianu 7696baef150380d561a4d695a6be4fc509821c23611Calin Culianu oldevents = s->async->events; 7706baef150380d561a4d695a6be4fc509821c23611Calin Culianu 7716baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (subpriv->intr.active) { 7726baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned mytrig = 7730a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral ((triggered >> 7740a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral subpriv->intr.asic_chan) 7750a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral & 7760a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral ((0x1 << subpriv-> 7770a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral intr. 7780a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral num_asic_chans) - 7790a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral 1)) << subpriv-> 7800a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral intr.first_chan; 7810a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral if (mytrig & 7820a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral subpriv->intr.enabled_mask) 7830a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral { 7840a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral unsigned int val 7850a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral = 0; 7866baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned int n, 7870a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral ch, len; 7886baef150380d561a4d695a6be4fc509821c23611Calin Culianu 7890a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral len = 7900a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral s-> 7910a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral async->cmd.chanlist_len; 7926baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (n = 0; 7930a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral n < len; 7940a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral n++) { 7956baef150380d561a4d695a6be4fc509821c23611Calin Culianu ch = CR_CHAN(s->async->cmd.chanlist[n]); 7966baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (mytrig & (1U << ch)) { 7976baef150380d561a4d695a6be4fc509821c23611Calin Culianu val |= (1U << n); 7986baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 7996baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 8006baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Write the scan to the buffer. */ 8010a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral if (comedi_buf_put(s->async, ((short *)&val)[0]) 8020a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral && 8030a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral comedi_buf_put 8040a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (s->async, 8050a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral ((short *) 8060a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral &val)[1])) 8070a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral { 8086baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->async->events |= (COMEDI_CB_BLOCK | COMEDI_CB_EOS); 8096baef150380d561a4d695a6be4fc509821c23611Calin Culianu } else { 8106baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Overflow! Stop acquisition!! */ 8116baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* TODO: STOP_ACQUISITION_CALL_HERE!! */ 8126baef150380d561a4d695a6be4fc509821c23611Calin Culianu pcmuio_stop_intr 8130a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (dev, 8140a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral s); 8156baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 8166baef150380d561a4d695a6be4fc509821c23611Calin Culianu 8176baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Check for end of acquisition. */ 8180a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral if (!subpriv->intr.continuous) { 8196baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* stop_src == TRIG_COUNT */ 8206baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (subpriv->intr.stop_count > 0) { 8210a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral subpriv->intr.stop_count--; 8226baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (subpriv->intr.stop_count == 0) { 8236baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->async->events |= COMEDI_CB_EOA; 8246baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* TODO: STOP_ACQUISITION_CALL_HERE!! */ 8256baef150380d561a4d695a6be4fc509821c23611Calin Culianu pcmuio_stop_intr 8260a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (dev, 8270a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral s); 8286baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 8296baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 8306baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 8316baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 8326baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 8336baef150380d561a4d695a6be4fc509821c23611Calin Culianu 8340a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral spin_unlock_irqrestore 8350a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (&subpriv->intr.spinlock, 8360a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral flags); 8376baef150380d561a4d695a6be4fc509821c23611Calin Culianu 8386baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (oldevents != 8390a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral s->async->events) { 8406baef150380d561a4d695a6be4fc509821c23611Calin Culianu comedi_event(dev, s); 8416baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 8426baef150380d561a4d695a6be4fc509821c23611Calin Culianu 8436baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 8446baef150380d561a4d695a6be4fc509821c23611Calin Culianu 8456baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 8466baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 8476baef150380d561a4d695a6be4fc509821c23611Calin Culianu 8486baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 8496baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 8506baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (!got1) 8516baef150380d561a4d695a6be4fc509821c23611Calin Culianu return IRQ_NONE; /* interrupt from other source */ 8526baef150380d561a4d695a6be4fc509821c23611Calin Culianu return IRQ_HANDLED; 8536baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 8546baef150380d561a4d695a6be4fc509821c23611Calin Culianu 8550a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic void pcmuio_stop_intr(struct comedi_device *dev, 8560a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s) 8576baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 8586baef150380d561a4d695a6be4fc509821c23611Calin Culianu int nports, firstport, asic, port; 8596baef150380d561a4d695a6be4fc509821c23611Calin Culianu 860c3744138715045adb316284ee7a1e608f0278f6cBill Pemberton asic = subpriv->intr.asic; 861c3744138715045adb316284ee7a1e608f0278f6cBill Pemberton if (asic < 0) 8626baef150380d561a4d695a6be4fc509821c23611Calin Culianu return; /* not an interrupt subdev */ 8636baef150380d561a4d695a6be4fc509821c23611Calin Culianu 8646baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.enabled_mask = 0; 8656baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.active = 0; 8666baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->async->inttrig = 0; 8676baef150380d561a4d695a6be4fc509821c23611Calin Culianu nports = subpriv->intr.num_asic_chans / CHANS_PER_PORT; 8686baef150380d561a4d695a6be4fc509821c23611Calin Culianu firstport = subpriv->intr.asic_chan / CHANS_PER_PORT; 8696baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch_page(dev, asic, PAGE_ENAB); 8706baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (port = firstport; port < firstport + nports; ++port) { 8716baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* disable all intrs for this subdev.. */ 8726baef150380d561a4d695a6be4fc509821c23611Calin Culianu outb(0, devpriv->asics[asic].iobase + REG_ENAB0 + port); 8736baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 8746baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 8756baef150380d561a4d695a6be4fc509821c23611Calin Culianu 8760a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralstatic int pcmuio_start_intr(struct comedi_device *dev, 8770a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_subdevice *s) 8786baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 8796baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (!subpriv->intr.continuous && subpriv->intr.stop_count == 0) { 8806baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* An empty acquisition! */ 8816baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->async->events |= COMEDI_CB_EOA; 8826baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.active = 0; 8836baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 1; 8846baef150380d561a4d695a6be4fc509821c23611Calin Culianu } else { 8856baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned bits = 0, pol_bits = 0, n; 8866baef150380d561a4d695a6be4fc509821c23611Calin Culianu int nports, firstport, asic, port; 887ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &s->async->cmd; 8886baef150380d561a4d695a6be4fc509821c23611Calin Culianu 889c3744138715045adb316284ee7a1e608f0278f6cBill Pemberton asic = subpriv->intr.asic; 890c3744138715045adb316284ee7a1e608f0278f6cBill Pemberton if (asic < 0) 8916baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 1; /* not an interrupt 8926baef150380d561a4d695a6be4fc509821c23611Calin Culianu subdev */ 8936baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.enabled_mask = 0; 8946baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.active = 1; 8956baef150380d561a4d695a6be4fc509821c23611Calin Culianu nports = subpriv->intr.num_asic_chans / CHANS_PER_PORT; 8966baef150380d561a4d695a6be4fc509821c23611Calin Culianu firstport = subpriv->intr.asic_chan / CHANS_PER_PORT; 8976baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (cmd->chanlist) { 8986baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (n = 0; n < cmd->chanlist_len; n++) { 8996baef150380d561a4d695a6be4fc509821c23611Calin Culianu bits |= (1U << CR_CHAN(cmd->chanlist[n])); 9006baef150380d561a4d695a6be4fc509821c23611Calin Culianu pol_bits |= (CR_AREF(cmd->chanlist[n]) 9010a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral || CR_RANGE(cmd-> 9020a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral chanlist[n]) ? 1U : 0U) 9030a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral << CR_CHAN(cmd->chanlist[n]); 9046baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 9056baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 9066baef150380d561a4d695a6be4fc509821c23611Calin Culianu bits &= ((0x1 << subpriv->intr.num_asic_chans) - 9070a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral 1) << subpriv->intr.first_chan; 9086baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.enabled_mask = bits; 9096baef150380d561a4d695a6be4fc509821c23611Calin Culianu 9106baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch_page(dev, asic, PAGE_ENAB); 9116baef150380d561a4d695a6be4fc509821c23611Calin Culianu for (port = firstport; port < firstport + nports; ++port) { 9126baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned enab = 9130a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral bits >> (subpriv->intr.first_chan + (port - 9140a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral firstport) * 9150a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral 8) & 0xff, pol = 9160a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral pol_bits >> (subpriv->intr.first_chan + 9170a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral (port - firstport) * 8) & 0xff; 9186baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* set enab intrs for this subdev.. */ 9196baef150380d561a4d695a6be4fc509821c23611Calin Culianu outb(enab, 9200a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral devpriv->asics[asic].iobase + REG_ENAB0 + port); 9216baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch_page(dev, asic, PAGE_POL); 9226baef150380d561a4d695a6be4fc509821c23611Calin Culianu outb(pol, 9230a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral devpriv->asics[asic].iobase + REG_ENAB0 + port); 9246baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 9256baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 9266baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 0; 9276baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 9286baef150380d561a4d695a6be4fc509821c23611Calin Culianu 929da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int pcmuio_cancel(struct comedi_device *dev, struct comedi_subdevice *s) 9306baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 9316baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long flags; 9326baef150380d561a4d695a6be4fc509821c23611Calin Culianu 9335f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_lock_irqsave(&subpriv->intr.spinlock, flags); 9346baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (subpriv->intr.active) 9356baef150380d561a4d695a6be4fc509821c23611Calin Culianu pcmuio_stop_intr(dev, s); 9365f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_unlock_irqrestore(&subpriv->intr.spinlock, flags); 9376baef150380d561a4d695a6be4fc509821c23611Calin Culianu 9386baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 0; 9396baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 9406baef150380d561a4d695a6be4fc509821c23611Calin Culianu 9416baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 9426baef150380d561a4d695a6be4fc509821c23611Calin Culianu * Internal trigger function to start acquisition for an 'INTERRUPT' subdevice. 9436baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 9446baef150380d561a4d695a6be4fc509821c23611Calin Culianustatic int 945da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonpcmuio_inttrig_start_intr(struct comedi_device *dev, struct comedi_subdevice *s, 9460a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral unsigned int trignum) 9476baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 9486baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long flags; 9496baef150380d561a4d695a6be4fc509821c23611Calin Culianu int event = 0; 9506baef150380d561a4d695a6be4fc509821c23611Calin Culianu 9516baef150380d561a4d695a6be4fc509821c23611Calin Culianu if (trignum != 0) 9526baef150380d561a4d695a6be4fc509821c23611Calin Culianu return -EINVAL; 9536baef150380d561a4d695a6be4fc509821c23611Calin Culianu 9545f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_lock_irqsave(&subpriv->intr.spinlock, flags); 9556baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->async->inttrig = 0; 9560389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya if (subpriv->intr.active) 9576baef150380d561a4d695a6be4fc509821c23611Calin Culianu event = pcmuio_start_intr(dev, s); 9580389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya 9595f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_unlock_irqrestore(&subpriv->intr.spinlock, flags); 9606baef150380d561a4d695a6be4fc509821c23611Calin Culianu 9610389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya if (event) 9626baef150380d561a4d695a6be4fc509821c23611Calin Culianu comedi_event(dev, s); 9636baef150380d561a4d695a6be4fc509821c23611Calin Culianu 9646baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 1; 9656baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 9666baef150380d561a4d695a6be4fc509821c23611Calin Culianu 9676baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 9686baef150380d561a4d695a6be4fc509821c23611Calin Culianu * 'do_cmd' function for an 'INTERRUPT' subdevice. 9696baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 970da91b2692e0939b307f9047192d2b9fe07793e7aBill Pembertonstatic int pcmuio_cmd(struct comedi_device *dev, struct comedi_subdevice *s) 9716baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 972ea6d0d4cab4f4f2d6a88f3bce4707fe92696fd3fBill Pemberton struct comedi_cmd *cmd = &s->async->cmd; 9736baef150380d561a4d695a6be4fc509821c23611Calin Culianu unsigned long flags; 9746baef150380d561a4d695a6be4fc509821c23611Calin Culianu int event = 0; 9756baef150380d561a4d695a6be4fc509821c23611Calin Culianu 9765f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_lock_irqsave(&subpriv->intr.spinlock, flags); 9776baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.active = 1; 9786baef150380d561a4d695a6be4fc509821c23611Calin Culianu 9796baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Set up end of acquisition. */ 9806baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch (cmd->stop_src) { 9816baef150380d561a4d695a6be4fc509821c23611Calin Culianu case TRIG_COUNT: 9826baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.continuous = 0; 9836baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.stop_count = cmd->stop_arg; 9846baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 9856baef150380d561a4d695a6be4fc509821c23611Calin Culianu default: 9866baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* TRIG_NONE */ 9876baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.continuous = 1; 9886baef150380d561a4d695a6be4fc509821c23611Calin Culianu subpriv->intr.stop_count = 0; 9896baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 9906baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 9916baef150380d561a4d695a6be4fc509821c23611Calin Culianu 9926baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* Set up start of acquisition. */ 9936baef150380d561a4d695a6be4fc509821c23611Calin Culianu switch (cmd->start_src) { 9946baef150380d561a4d695a6be4fc509821c23611Calin Culianu case TRIG_INT: 9956baef150380d561a4d695a6be4fc509821c23611Calin Culianu s->async->inttrig = pcmuio_inttrig_start_intr; 9966baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 9976baef150380d561a4d695a6be4fc509821c23611Calin Culianu default: 9986baef150380d561a4d695a6be4fc509821c23611Calin Culianu /* TRIG_NOW */ 9996baef150380d561a4d695a6be4fc509821c23611Calin Culianu event = pcmuio_start_intr(dev, s); 10006baef150380d561a4d695a6be4fc509821c23611Calin Culianu break; 10016baef150380d561a4d695a6be4fc509821c23611Calin Culianu } 10025f74ea14c07fee91d3bdbaad88bff6264c6200e6Greg Kroah-Hartman spin_unlock_irqrestore(&subpriv->intr.spinlock, flags); 10036baef150380d561a4d695a6be4fc509821c23611Calin Culianu 10040389245f0c5692111c0dc8d997fc4af72d789472Ravishankar karkala Mallikarjunayya if (event) 10056baef150380d561a4d695a6be4fc509821c23611Calin Culianu comedi_event(dev, s); 10066baef150380d561a4d695a6be4fc509821c23611Calin Culianu 10076baef150380d561a4d695a6be4fc509821c23611Calin Culianu return 0; 10086baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 10096baef150380d561a4d695a6be4fc509821c23611Calin Culianu 10106baef150380d561a4d695a6be4fc509821c23611Calin Culianustatic int 10110a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukralpcmuio_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, 10120a85b6f0ab0d2edb0d41b32697111ce0e4f43496Mithlesh Thukral struct comedi_cmd *cmd) 10136baef150380d561a4d695a6be4fc509821c23611Calin Culianu{ 10140b8f754a6220158f2348bc6eae2772bc64bc98a2Bill Pemberton return comedi_pcm_cmdtest(dev, s, cmd); 10156baef150380d561a4d695a6be4fc509821c23611Calin Culianu} 10166baef150380d561a4d695a6be4fc509821c23611Calin Culianu 10176baef150380d561a4d695a6be4fc509821c23611Calin Culianu/* 10186baef150380d561a4d695a6be4fc509821c23611Calin Culianu * A convenient macro that defines init_module() and cleanup_module(), 10196baef150380d561a4d695a6be4fc509821c23611Calin Culianu * as necessary. 10206baef150380d561a4d695a6be4fc509821c23611Calin Culianu */ 10217114a28011f9d5f3d981731ad341177c21f9d948Arun Thomasstatic int __init driver_init_module(void) 10227114a28011f9d5f3d981731ad341177c21f9d948Arun Thomas{ 10237114a28011f9d5f3d981731ad341177c21f9d948Arun Thomas return comedi_driver_register(&driver); 10247114a28011f9d5f3d981731ad341177c21f9d948Arun Thomas} 10257114a28011f9d5f3d981731ad341177c21f9d948Arun Thomas 10267114a28011f9d5f3d981731ad341177c21f9d948Arun Thomasstatic void __exit driver_cleanup_module(void) 10277114a28011f9d5f3d981731ad341177c21f9d948Arun Thomas{ 10287114a28011f9d5f3d981731ad341177c21f9d948Arun Thomas comedi_driver_unregister(&driver); 10297114a28011f9d5f3d981731ad341177c21f9d948Arun Thomas} 10307114a28011f9d5f3d981731ad341177c21f9d948Arun Thomas 10317114a28011f9d5f3d981731ad341177c21f9d948Arun Thomasmodule_init(driver_init_module); 10327114a28011f9d5f3d981731ad341177c21f9d948Arun Thomasmodule_exit(driver_cleanup_module); 103390f703d30dd3e0c16ff80f35e34e511385a05ad5Arun Thomas 103490f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_AUTHOR("Comedi http://www.comedi.org"); 103590f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_DESCRIPTION("Comedi low-level driver"); 103690f703d30dd3e0c16ff80f35e34e511385a05ad5Arun ThomasMODULE_LICENSE("GPL"); 1037