1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * comedi/drivers/ni_labpc_pci.c 4 * Driver for National Instruments Lab-PC PCI-1200 5 * Copyright (C) 2001, 2002, 2003 Frank Mori Hess <fmhess@users.sourceforge.net> 6 */ 7 8 /* 9 * Driver: ni_labpc_pci 10 * Description: National Instruments Lab-PC PCI-1200 11 * Devices: [National Instruments] PCI-1200 (ni_pci-1200) 12 * Author: Frank Mori Hess <fmhess@users.sourceforge.net> 13 * Status: works 14 * 15 * This is the PCI-specific support split off from the ni_labpc driver. 16 * 17 * Configuration Options: not applicable, uses PCI auto config 18 * 19 * NI manuals: 20 * 340914a (pci-1200) 21 */ 22 23 #include <linux/module.h> 24 #include <linux/interrupt.h> 25 #include <linux/comedi/comedi_pci.h> 26 27 #include "ni_labpc.h" 28 29 enum labpc_pci_boardid { 30 BOARD_NI_PCI1200, 31 }; 32 33 static const struct labpc_boardinfo labpc_pci_boards[] = { 34 [BOARD_NI_PCI1200] = { 35 .name = "ni_pci-1200", 36 .ai_speed = 10000, 37 .ai_scan_up = 1, 38 .has_ao = 1, 39 .is_labpc1200 = 1, 40 }, 41 }; 42 43 /* ripped from mite.h and mite_setup2() to avoid mite dependency */ 44 #define MITE_IODWBSR 0xc0 /* IO Device Window Base Size Register */ 45 #define WENAB BIT(7) /* window enable */ 46 47 static int labpc_pci_mite_init(struct pci_dev *pcidev) 48 { 49 void __iomem *mite_base; 50 u32 main_phys_addr; 51 52 /* ioremap the MITE registers (BAR 0) temporarily */ 53 mite_base = pci_ioremap_bar(pcidev, 0); 54 if (!mite_base) 55 return -ENOMEM; 56 57 /* set data window to main registers (BAR 1) */ 58 main_phys_addr = pci_resource_start(pcidev, 1); 59 writel(main_phys_addr | WENAB, mite_base + MITE_IODWBSR); 60 61 /* finished with MITE registers */ 62 iounmap(mite_base); 63 return 0; 64 } 65 66 static int labpc_pci_auto_attach(struct comedi_device *dev, 67 unsigned long context) 68 { 69 struct pci_dev *pcidev = comedi_to_pci_dev(dev); 70 const struct labpc_boardinfo *board = NULL; 71 int ret; 72 73 if (context < ARRAY_SIZE(labpc_pci_boards)) 74 board = &labpc_pci_boards[context]; 75 if (!board) 76 return -ENODEV; 77 dev->board_ptr = board; 78 dev->board_name = board->name; 79 80 ret = comedi_pci_enable(dev); 81 if (ret) 82 return ret; 83 84 ret = labpc_pci_mite_init(pcidev); 85 if (ret) 86 return ret; 87 88 dev->mmio = pci_ioremap_bar(pcidev, 1); 89 if (!dev->mmio) 90 return -ENOMEM; 91 92 return labpc_common_attach(dev, pcidev->irq, IRQF_SHARED); 93 } 94 95 static void labpc_pci_detach(struct comedi_device *dev) 96 { 97 labpc_common_detach(dev); 98 comedi_pci_detach(dev); 99 } 100 101 static struct comedi_driver labpc_pci_comedi_driver = { 102 .driver_name = "labpc_pci", 103 .module = THIS_MODULE, 104 .auto_attach = labpc_pci_auto_attach, 105 .detach = labpc_pci_detach, 106 }; 107 108 static const struct pci_device_id labpc_pci_table[] = { 109 { PCI_VDEVICE(NI, 0x161), BOARD_NI_PCI1200 }, 110 { 0 } 111 }; 112 MODULE_DEVICE_TABLE(pci, labpc_pci_table); 113 114 static int labpc_pci_probe(struct pci_dev *dev, 115 const struct pci_device_id *id) 116 { 117 return comedi_pci_auto_config(dev, &labpc_pci_comedi_driver, 118 id->driver_data); 119 } 120 121 static struct pci_driver labpc_pci_driver = { 122 .name = "labpc_pci", 123 .id_table = labpc_pci_table, 124 .probe = labpc_pci_probe, 125 .remove = comedi_pci_auto_unconfig, 126 }; 127 module_comedi_pci_driver(labpc_pci_comedi_driver, labpc_pci_driver); 128 129 MODULE_DESCRIPTION("Comedi: National Instruments Lab-PC PCI-1200 driver"); 130 MODULE_AUTHOR("Comedi https://www.comedi.org"); 131 MODULE_LICENSE("GPL"); 132