| /** |
| * @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 <linux/module.h> |
| |
| #include <linux/pci.h> |
| #include <linux/slab.h> |
| #include <linux/sched.h> |
| #include <linux/interrupt.h> |
| #include <linux/version.h> |
| |
| #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; |
| } |
| EXPORT_SYMBOL(me1400_pci_constructor); |
| |
| // 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 <g.gebhardt@meilhaus.de> & Krzysztof Gantzke <k.gantzke@meilhaus.de>"); |
| MODULE_DESCRIPTION("Device Driver Module for Meilhaus ME-14xx devices"); |
| MODULE_SUPPORTED_DEVICE("Meilhaus ME-14xx MIO devices"); |
| MODULE_LICENSE("GPL"); |