/** * @file me1400_device.c * * @brief ME-1400 device instance. * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) * @author Guenter Gebhardt * @author Krzysztof Gantzke (k.gantzke@meilhaus.de) */ /* * Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) * * This file 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. */ /* * User application could also include the kernel header files. But the * real kernel functions are protected by #ifdef __KERNEL__. */ #ifndef __KERNEL__ # define __KERNEL__ #endif /* * This must be defined before module.h is included. Not needed, when * it is a built in driver. */ #ifndef MODULE # define MODULE #endif #include #include #include #include #include #include #include "meids.h" #include "meerror.h" #include "mecommon.h" #include "meinternal.h" #include "medebug.h" #include "me1400_device.h" #include "me8254.h" #include "me8254_reg.h" #include "me8255.h" #include "me1400_ext_irq.h" me_device_t *me1400_pci_constructor(struct pci_dev *pci_device) { int err; me1400_device_t *me1400_device; me_subdevice_t *subdevice; unsigned int version_idx; unsigned int me8255_idx; unsigned int dio_idx; unsigned int me8254_idx; unsigned int ctr_idx; unsigned int ext_irq_idx; PDEBUG("executed.\n"); // Allocate structure for device instance. me1400_device = kmalloc(sizeof(me1400_device_t), GFP_KERNEL); if (!me1400_device) { PERROR("Cannot get memory for 1400ate device instance.\n"); return NULL; } memset(me1400_device, 0, sizeof(me1400_device_t)); // Initialize base class structure. err = me_device_pci_init((me_device_t *) me1400_device, pci_device); if (err) { kfree(me1400_device); PERROR("Cannot initialize device base class.\n"); return NULL; } /* Check for ME1400 extension device. If detected we fake a ME-1400 D device id. */ if (me1400_device->base.info.pci.device_id == PCI_DEVICE_ID_MEILHAUS_ME140C) { uint8_t ctrl; ctrl = inb(me1400_device->base.info.pci.reg_bases[2] + ME1400D_CLK_SRC_2_REG); PDEBUG_REG("xxx_reg inb(0x%X+0x%X)=0x%x\n", me1400_device->base.info.pci.reg_bases[2], ME1400D_CLK_SRC_2_REG, ctrl); outb(ctrl | 0xF0, me1400_device->base.info.pci.reg_bases[2] + ME1400D_CLK_SRC_2_REG); PDEBUG_REG("xxx_reg outb(0x%X+0x%X)=0x%x\n", me1400_device->base.info.pci.reg_bases[2], ME1400D_CLK_SRC_2_REG, ctrl | 0xF0); ctrl = inb(me1400_device->base.info.pci.reg_bases[2] + ME1400D_CLK_SRC_2_REG); PDEBUG_REG("xxx_reg inb(0x%X+0x%X)=0x%x\n", me1400_device->base.info.pci.reg_bases[2], ME1400D_CLK_SRC_2_REG, ctrl); if ((ctrl & 0xF0) == 0xF0) { PINFO("ME1400 D detected.\n"); me1400_device->base.info.pci.device_id = PCI_DEVICE_ID_MEILHAUS_ME140D; } } /* Initialize global stuff of digital i/o subdevices. */ for (me8255_idx = 0; me8255_idx < ME1400_MAX_8255; me8255_idx++) { me1400_device->dio_current_mode[me8255_idx] = 0; spin_lock_init(&me1400_device->dio_ctrl_reg_lock[me8255_idx]); } /* Initialize global stuff of counter subdevices. */ spin_lock_init(&me1400_device->clk_src_reg_lock); for (me8254_idx = 0; me8254_idx < ME1400_MAX_8254; me8254_idx++) spin_lock_init(&me1400_device->ctr_ctrl_reg_lock[me8254_idx]); /* Get the index in the device version information table. */ version_idx = me1400_versions_get_device_index(me1400_device->base.info.pci. device_id); /* Generate DIO subdevice instances. */ for (me8255_idx = 0; me8255_idx < me1400_versions[version_idx].dio_chips; me8255_idx++) { for (dio_idx = 0; dio_idx < 3; dio_idx++) { subdevice = (me_subdevice_t *) me8255_constructor(me1400_versions[version_idx]. device_id, me1400_device->base.info.pci. reg_bases[2], me8255_idx, dio_idx, &me1400_device-> dio_current_mode[me8255_idx], &me1400_device-> dio_ctrl_reg_lock[me8255_idx]); if (!subdevice) { me_device_deinit((me_device_t *) me1400_device); kfree(me1400_device); PERROR("Cannot get memory for subdevice.\n"); return NULL; } me_slist_add_subdevice_tail(&me1400_device->base.slist, subdevice); } } /* Generate counter subdevice instances. */ for (me8254_idx = 0; me8254_idx < me1400_versions[version_idx].ctr_chips; me8254_idx++) { for (ctr_idx = 0; ctr_idx < 3; ctr_idx++) { subdevice = (me_subdevice_t *) me8254_constructor(me1400_device->base.info.pci. device_id, me1400_device->base.info.pci. reg_bases[2], me8254_idx, ctr_idx, &me1400_device-> ctr_ctrl_reg_lock[me8254_idx], &me1400_device-> clk_src_reg_lock); if (!subdevice) { me_device_deinit((me_device_t *) me1400_device); kfree(me1400_device); PERROR("Cannot get memory for subdevice.\n"); return NULL; } me_slist_add_subdevice_tail(&me1400_device->base.slist, subdevice); } } /* Generate external interrupt subdevice instances. */ for (ext_irq_idx = 0; ext_irq_idx < me1400_versions[version_idx].ext_irq_subdevices; ext_irq_idx++) { subdevice = (me_subdevice_t *) me1400_ext_irq_constructor(me1400_device->base.info.pci. device_id, me1400_device->base.info.pci. reg_bases[1], me1400_device->base.info.pci. reg_bases[2], &me1400_device->clk_src_reg_lock, me1400_device->base.irq); if (!subdevice) { me_device_deinit((me_device_t *) me1400_device); kfree(me1400_device); PERROR("Cannot get memory for subdevice.\n"); return NULL; } me_slist_add_subdevice_tail(&me1400_device->base.slist, subdevice); } return (me_device_t *) me1400_device; } // Init and exit of module. static int __init me1400_init(void) { PDEBUG("executed.\n"); return 0; } static void __exit me1400_exit(void) { PDEBUG("executed.\n"); } module_init(me1400_init); module_exit(me1400_exit); // Administrative stuff for modinfo. MODULE_AUTHOR ("Guenter Gebhardt & Krzysztof Gantzke "); MODULE_DESCRIPTION("Device Driver Module for Meilhaus ME-14xx devices"); MODULE_SUPPORTED_DEVICE("Meilhaus ME-14xx MIO devices"); MODULE_LICENSE("GPL"); // Export the constructor. EXPORT_SYMBOL(me1400_pci_constructor);