| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * 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> |
| */ |
| |
| /* |
| * Driver: 8255_pci |
| * Description: Generic PCI based 8255 Digital I/O boards |
| * Devices: [ADLink] PCI-7224 (adl_pci-7224), PCI-7248 (adl_pci-7248), |
| * PCI-7296 (adl_pci-7296), |
| * [Measurement Computing] PCI-DIO24 (cb_pci-dio24), |
| * PCI-DIO24H (cb_pci-dio24h), PCI-DIO48H (cb_pci-dio48h), |
| * PCI-DIO96H (cb_pci-dio96h), |
| * [National Instruments] PCI-DIO-96 (ni_pci-dio-96), |
| * PCI-DIO-96B (ni_pci-dio-96b), PXI-6508 (ni_pxi-6508), |
| * PCI-6503 (ni_pci-6503), PCI-6503B (ni_pci-6503b), |
| * PCI-6503X (ni_pci-6503x), PXI-6503 (ni_pxi-6503) |
| * Author: H Hartley Sweeten <hsweeten@visionengravers.com> |
| * Updated: Wed, 12 Sep 2012 11:52:01 -0700 |
| * Status: untested |
| * |
| * These boards have one or more 8255 digital I/O chips, each of which |
| * is supported as a separate 24-channel DIO subdevice. |
| * |
| * Boards with 24 DIO channels (1 DIO subdevice): |
| * |
| * PCI-7224, PCI-DIO24, PCI-DIO24H, PCI-6503, PCI-6503B, PCI-6503X, |
| * PXI-6503 |
| * |
| * Boards with 48 DIO channels (2 DIO subdevices): |
| * |
| * PCI-7248, PCI-DIO48H |
| * |
| * Boards with 96 DIO channels (4 DIO subdevices): |
| * |
| * PCI-7296, PCI-DIO96H, PCI-DIO-96, PCI-DIO-96B, PXI-6508 |
| * |
| * 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/module.h> |
| #include <linux/comedi/comedi_pci.h> |
| #include <linux/comedi/comedi_8255.h> |
| |
| enum pci_8255_boardid { |
| #ifdef CONFIG_HAS_IOPORT |
| BOARD_ADLINK_PCI7224, |
| BOARD_ADLINK_PCI7248, |
| BOARD_ADLINK_PCI7296, |
| BOARD_CB_PCIDIO24, |
| BOARD_CB_PCIDIO24H, |
| BOARD_CB_PCIDIO48H_OLD, |
| BOARD_CB_PCIDIO48H_NEW, |
| BOARD_CB_PCIDIO96H, |
| #endif /* CONFIG_HAS_IOPORT */ |
| 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; |
| unsigned int has_mite:1; |
| }; |
| |
| static const struct pci_8255_boardinfo pci_8255_boards[] = { |
| #ifdef CONFIG_HAS_IOPORT |
| [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_OLD] = { |
| .name = "cb_pci-dio48h", |
| .dio_badr = 1, |
| .n_8255 = 2, |
| }, |
| [BOARD_CB_PCIDIO48H_NEW] = { |
| .name = "cb_pci-dio48h", |
| .dio_badr = 2, |
| .n_8255 = 2, |
| }, |
| [BOARD_CB_PCIDIO96H] = { |
| .name = "cb_pci-dio96h", |
| .dio_badr = 2, |
| .n_8255 = 4, |
| }, |
| #endif /* CONFIG_HAS_IOPORT */ |
| [BOARD_NI_PCIDIO96] = { |
| .name = "ni_pci-dio-96", |
| .dio_badr = 1, |
| .n_8255 = 4, |
| .has_mite = 1, |
| }, |
| [BOARD_NI_PCIDIO96B] = { |
| .name = "ni_pci-dio-96b", |
| .dio_badr = 1, |
| .n_8255 = 4, |
| .has_mite = 1, |
| }, |
| [BOARD_NI_PXI6508] = { |
| .name = "ni_pxi-6508", |
| .dio_badr = 1, |
| .n_8255 = 4, |
| .has_mite = 1, |
| }, |
| [BOARD_NI_PCI6503] = { |
| .name = "ni_pci-6503", |
| .dio_badr = 1, |
| .n_8255 = 1, |
| .has_mite = 1, |
| }, |
| [BOARD_NI_PCI6503B] = { |
| .name = "ni_pci-6503b", |
| .dio_badr = 1, |
| .n_8255 = 1, |
| .has_mite = 1, |
| }, |
| [BOARD_NI_PCI6503X] = { |
| .name = "ni_pci-6503x", |
| .dio_badr = 1, |
| .n_8255 = 1, |
| .has_mite = 1, |
| }, |
| [BOARD_NI_PXI_6503] = { |
| .name = "ni_pxi-6503", |
| .dio_badr = 1, |
| .n_8255 = 1, |
| .has_mite = 1, |
| }, |
| }; |
| |
| /* ripped from mite.h and mite_setup2() to avoid mite dependency */ |
| #define MITE_IODWBSR 0xc0 /* IO Device Window Base Size Register */ |
| #define WENAB BIT(7) /* window enable */ |
| |
| static int pci_8255_mite_init(struct pci_dev *pcidev) |
| { |
| void __iomem *mite_base; |
| u32 main_phys_addr; |
| |
| /* ioremap the MITE registers (BAR 0) temporarily */ |
| mite_base = pci_ioremap_bar(pcidev, 0); |
| if (!mite_base) |
| return -ENOMEM; |
| |
| /* set data window to main registers (BAR 1) */ |
| main_phys_addr = pci_resource_start(pcidev, 1); |
| writel(main_phys_addr | WENAB, mite_base + MITE_IODWBSR); |
| |
| /* finished with MITE registers */ |
| iounmap(mite_base); |
| return 0; |
| } |
| |
| 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 comedi_subdevice *s; |
| 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; |
| |
| ret = comedi_pci_enable(dev); |
| if (ret) |
| return ret; |
| |
| if (board->has_mite) { |
| ret = pci_8255_mite_init(pcidev); |
| if (ret) |
| return ret; |
| } |
| |
| if ((pci_resource_flags(pcidev, board->dio_badr) & IORESOURCE_MEM)) { |
| dev->mmio = pci_ioremap_bar(pcidev, board->dio_badr); |
| if (!dev->mmio) |
| return -ENOMEM; |
| } else if (IS_ENABLED(CONFIG_HAS_IOPORT)) { |
| dev->iobase = pci_resource_start(pcidev, board->dio_badr); |
| } else { |
| dev_err(dev->class_dev, "error! need I/O port support\n"); |
| return -ENXIO; |
| } |
| |
| /* |
| * 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++) { |
| s = &dev->subdevices[i]; |
| if (dev->mmio) |
| ret = subdev_8255_mm_init(dev, s, i * I8255_SIZE); |
| else |
| ret = subdev_8255_io_init(dev, s, i * I8255_SIZE); |
| if (ret) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static struct comedi_driver pci_8255_driver = { |
| .driver_name = "8255_pci", |
| .module = THIS_MODULE, |
| .auto_attach = pci_8255_auto_attach, |
| .detach = comedi_pci_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 const struct pci_device_id pci_8255_pci_table[] = { |
| #ifdef CONFIG_HAS_IOPORT |
| { 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_DEVICE_SUB(PCI_VENDOR_ID_CB, 0x000b, 0x0000, 0x0000), |
| .driver_data = BOARD_CB_PCIDIO48H_OLD }, |
| { PCI_DEVICE_SUB(PCI_VENDOR_ID_CB, 0x000b, PCI_VENDOR_ID_CB, 0x000b), |
| .driver_data = BOARD_CB_PCIDIO48H_NEW }, |
| { PCI_VDEVICE(CB, 0x0017), BOARD_CB_PCIDIO96H }, |
| #endif /* CONFIG_HAS_IOPORT */ |
| { 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 https://www.comedi.org"); |
| MODULE_LICENSE("GPL"); |