| /* |
| * COMEDI driver for generic PCI based 8255 digital i/o boards |
| * Copyright (C) 2012 H Hartley Sweeten <hsweeten@visionengravers.com> |
| * |
| * Based on the tested adl_pci7296 driver written by: |
| * Jon Grierson <jd@renko.co.uk> |
| * and the experimental cb_pcidio driver written by: |
| * Yoshiya Matsuzaka |
| * |
| * COMEDI - Linux Control and Measurement Device Interface |
| * Copyright (C) 2000 David A. Schleef <ds@schleef.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| /* |
| Driver: 8255_pci |
| Description: Generic PCI based 8255 Digital I/O boards |
| Devices: (ADLink) PCI-7224 [adl_pci-7224] - 24 channels |
| (ADLink) PCI-7248 [adl_pci-7248] - 48 channels |
| (ADLink) PCI-7296 [adl_pci-7296] - 96 channels |
| (Measurement Computing) PCI-DIO24 [cb_pci-dio24] - 24 channels |
| (Measurement Computing) PCI-DIO24H [cb_pci-dio24h] - 24 channels |
| (Measurement Computing) PCI-DIO48H [cb_pci-dio48h] - 48 channels |
| (Measurement Computing) PCI-DIO96H [cb_pci-dio96h] - 96 channels |
| (National Instruments) PCI-DIO-96 [ni_pci-dio-96] - 96 channels |
| (National Instruments) PCI-DIO-96B [ni_pci-dio-96b] - 96 channels |
| (National Instruments) PXI-6508 [ni_pxi-6508] - 96 channels |
| (National Instruments) PCI-6503 [ni_pci-6503] - 24 channels |
| (National Instruments) PCI-6503B [ni_pci-6503b] - 24 channels |
| (National Instruments) PCI-6503X [ni_pci-6503x] - 24 channels |
| (National Instruments) PXI-6503 [ni_pxi-6503] - 24 channels |
| Author: H Hartley Sweeten <hsweeten@visionengravers.com> |
| Updated: Wed, 12 Sep 2012 11:52:01 -0700 |
| Status: untested |
| |
| Some of these boards also have an 8254 programmable timer/counter |
| chip. This chip is not currently supported by this driver. |
| |
| Interrupt support for these boards is also not currently supported. |
| |
| Configuration Options: not applicable, uses PCI auto config |
| */ |
| |
| #include <linux/pci.h> |
| |
| #include "../comedidev.h" |
| |
| #include "8255.h" |
| |
| enum pci_8255_boardid { |
| BOARD_ADLINK_PCI7224, |
| BOARD_ADLINK_PCI7248, |
| BOARD_ADLINK_PCI7296, |
| BOARD_CB_PCIDIO24, |
| BOARD_CB_PCIDIO24H, |
| BOARD_CB_PCIDIO48H, |
| BOARD_CB_PCIDIO96H, |
| BOARD_NI_PCIDIO96, |
| BOARD_NI_PCIDIO96B, |
| BOARD_NI_PXI6508, |
| BOARD_NI_PCI6503, |
| BOARD_NI_PCI6503B, |
| BOARD_NI_PCI6503X, |
| BOARD_NI_PXI_6503, |
| }; |
| |
| struct pci_8255_boardinfo { |
| const char *name; |
| int dio_badr; |
| int n_8255; |
| }; |
| |
| static const struct pci_8255_boardinfo pci_8255_boards[] = { |
| [BOARD_ADLINK_PCI7224] = { |
| .name = "adl_pci-7224", |
| .dio_badr = 2, |
| .n_8255 = 1, |
| }, |
| [BOARD_ADLINK_PCI7248] = { |
| .name = "adl_pci-7248", |
| .dio_badr = 2, |
| .n_8255 = 2, |
| }, |
| [BOARD_ADLINK_PCI7296] = { |
| .name = "adl_pci-7296", |
| .dio_badr = 2, |
| .n_8255 = 4, |
| }, |
| [BOARD_CB_PCIDIO24] = { |
| .name = "cb_pci-dio24", |
| .dio_badr = 2, |
| .n_8255 = 1, |
| }, |
| [BOARD_CB_PCIDIO24H] = { |
| .name = "cb_pci-dio24h", |
| .dio_badr = 2, |
| .n_8255 = 1, |
| }, |
| [BOARD_CB_PCIDIO48H] = { |
| .name = "cb_pci-dio48h", |
| .dio_badr = 1, |
| .n_8255 = 2, |
| }, |
| [BOARD_CB_PCIDIO96H] = { |
| .name = "cb_pci-dio96h", |
| .dio_badr = 2, |
| .n_8255 = 4, |
| }, |
| [BOARD_NI_PCIDIO96] = { |
| .name = "ni_pci-dio-96", |
| .dio_badr = 1, |
| .n_8255 = 4, |
| }, |
| [BOARD_NI_PCIDIO96B] = { |
| .name = "ni_pci-dio-96b", |
| .dio_badr = 1, |
| .n_8255 = 4, |
| }, |
| [BOARD_NI_PXI6508] = { |
| .name = "ni_pxi-6508", |
| .dio_badr = 1, |
| .n_8255 = 4, |
| }, |
| [BOARD_NI_PCI6503] = { |
| .name = "ni_pci-6503", |
| .dio_badr = 1, |
| .n_8255 = 1, |
| }, |
| [BOARD_NI_PCI6503B] = { |
| .name = "ni_pci-6503b", |
| .dio_badr = 1, |
| .n_8255 = 1, |
| }, |
| [BOARD_NI_PCI6503X] = { |
| .name = "ni_pci-6503x", |
| .dio_badr = 1, |
| .n_8255 = 1, |
| }, |
| [BOARD_NI_PXI_6503] = { |
| .name = "ni_pxi-6503", |
| .dio_badr = 1, |
| .n_8255 = 1, |
| }, |
| }; |
| |
| struct pci_8255_private { |
| void __iomem *mmio_base; |
| }; |
| |
| static int pci_8255_mmio(int dir, int port, int data, unsigned long iobase) |
| { |
| void __iomem *mmio_base = (void __iomem *)iobase; |
| |
| if (dir) { |
| writeb(data, mmio_base + port); |
| return 0; |
| } else { |
| return readb(mmio_base + port); |
| } |
| } |
| |
| static int pci_8255_auto_attach(struct comedi_device *dev, |
| unsigned long context) |
| { |
| struct pci_dev *pcidev = comedi_to_pci_dev(dev); |
| const struct pci_8255_boardinfo *board = NULL; |
| struct pci_8255_private *devpriv; |
| struct comedi_subdevice *s; |
| bool is_mmio; |
| int ret; |
| int i; |
| |
| if (context < ARRAY_SIZE(pci_8255_boards)) |
| board = &pci_8255_boards[context]; |
| if (!board) |
| return -ENODEV; |
| dev->board_ptr = board; |
| dev->board_name = board->name; |
| |
| devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL); |
| if (!devpriv) |
| return -ENOMEM; |
| dev->private = devpriv; |
| |
| ret = comedi_pci_enable(dev); |
| if (ret) |
| return ret; |
| |
| is_mmio = (pci_resource_flags(pcidev, board->dio_badr) & |
| IORESOURCE_MEM) != 0; |
| if (is_mmio) { |
| devpriv->mmio_base = pci_ioremap_bar(pcidev, board->dio_badr); |
| if (!devpriv->mmio_base) |
| return -ENOMEM; |
| } else { |
| dev->iobase = pci_resource_start(pcidev, board->dio_badr); |
| } |
| |
| /* |
| * One, two, or four subdevices are setup by this driver depending |
| * on the number of channels provided by the board. Each subdevice |
| * has 24 channels supported by the 8255 module. |
| */ |
| ret = comedi_alloc_subdevices(dev, board->n_8255); |
| if (ret) |
| return ret; |
| |
| for (i = 0; i < board->n_8255; i++) { |
| unsigned long iobase; |
| |
| s = &dev->subdevices[i]; |
| if (is_mmio) { |
| iobase = (unsigned long)(devpriv->mmio_base + (i * 4)); |
| ret = subdev_8255_init(dev, s, pci_8255_mmio, iobase); |
| } else { |
| iobase = dev->iobase + (i * 4); |
| ret = subdev_8255_init(dev, s, NULL, iobase); |
| } |
| if (ret) |
| return ret; |
| } |
| |
| dev_info(dev->class_dev, "%s attached (%d digital i/o channels)\n", |
| dev->board_name, board->n_8255 * 24); |
| |
| return 0; |
| } |
| |
| static void pci_8255_detach(struct comedi_device *dev) |
| { |
| struct pci_8255_private *devpriv = dev->private; |
| int i; |
| |
| for (i = 0; i < dev->n_subdevices; i++) |
| comedi_spriv_free(dev, i); |
| if (devpriv && devpriv->mmio_base) |
| iounmap(devpriv->mmio_base); |
| comedi_pci_disable(dev); |
| } |
| |
| static struct comedi_driver pci_8255_driver = { |
| .driver_name = "8255_pci", |
| .module = THIS_MODULE, |
| .auto_attach = pci_8255_auto_attach, |
| .detach = pci_8255_detach, |
| }; |
| |
| static int pci_8255_pci_probe(struct pci_dev *dev, |
| const struct pci_device_id *id) |
| { |
| return comedi_pci_auto_config(dev, &pci_8255_driver, id->driver_data); |
| } |
| |
| static DEFINE_PCI_DEVICE_TABLE(pci_8255_pci_table) = { |
| { PCI_VDEVICE(ADLINK, 0x7224), BOARD_ADLINK_PCI7224 }, |
| { PCI_VDEVICE(ADLINK, 0x7248), BOARD_ADLINK_PCI7248 }, |
| { PCI_VDEVICE(ADLINK, 0x7296), BOARD_ADLINK_PCI7296 }, |
| { PCI_VDEVICE(CB, 0x0028), BOARD_CB_PCIDIO24 }, |
| { PCI_VDEVICE(CB, 0x0014), BOARD_CB_PCIDIO24H }, |
| { PCI_VDEVICE(CB, 0x000b), BOARD_CB_PCIDIO48H }, |
| { PCI_VDEVICE(CB, 0x0017), BOARD_CB_PCIDIO96H }, |
| { PCI_VDEVICE(NI, 0x0160), BOARD_NI_PCIDIO96 }, |
| { PCI_VDEVICE(NI, 0x1630), BOARD_NI_PCIDIO96B }, |
| { PCI_VDEVICE(NI, 0x13c0), BOARD_NI_PXI6508 }, |
| { PCI_VDEVICE(NI, 0x0400), BOARD_NI_PCI6503 }, |
| { PCI_VDEVICE(NI, 0x1250), BOARD_NI_PCI6503B }, |
| { PCI_VDEVICE(NI, 0x17d0), BOARD_NI_PCI6503X }, |
| { PCI_VDEVICE(NI, 0x1800), BOARD_NI_PXI_6503 }, |
| { 0 } |
| }; |
| MODULE_DEVICE_TABLE(pci, pci_8255_pci_table); |
| |
| static struct pci_driver pci_8255_pci_driver = { |
| .name = "8255_pci", |
| .id_table = pci_8255_pci_table, |
| .probe = pci_8255_pci_probe, |
| .remove = comedi_pci_auto_unconfig, |
| }; |
| module_comedi_pci_driver(pci_8255_driver, pci_8255_pci_driver); |
| |
| MODULE_DESCRIPTION("COMEDI - Generic PCI based 8255 Digital I/O boards"); |
| MODULE_AUTHOR("Comedi http://www.comedi.org"); |
| MODULE_LICENSE("GPL"); |