/* ******************************************************************************* ** O.S : Linux ** FILE NAME : arcmsr_attr.c ** BY : Nick Cheng ** Description: attributes exported to sysfs and device host ******************************************************************************* ** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved ** ** Web site: www.areca.com.tw ** E-mail: support@areca.com.tw ** ** This program is free software; you can redistribute it and/or modify ** it under the terms of the GNU General Public License version 2 as ** published by the Free Software Foundation. ** 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. ******************************************************************************* ** Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions ** are met: ** 1. Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** 2. Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in the ** documentation and/or other materials provided with the distribution. ** 3. The name of the author may not be used to endorse or promote products ** derived from this software without specific prior written permission. ** ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ******************************************************************************* ** For history of changes, see Documentation/scsi/ChangeLog.arcmsr ** Firmware Specification, see Documentation/scsi/arcmsr_spec.txt ******************************************************************************* */ #include #include #include #include #include #include #include #include #include #include #include #include "arcmsr.h" struct device_attribute *arcmsr_host_attrs[]; static ssize_t arcmsr_sysfs_iop_message_read(struct file *filp, struct kobject *kobj, struct bin_attribute *bin, char *buf, loff_t off, size_t count) { struct device *dev = container_of(kobj,struct device,kobj); struct Scsi_Host *host = class_to_shost(dev); struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; uint8_t *ptmpQbuffer; int32_t allxfer_len = 0; unsigned long flags; if (!capable(CAP_SYS_ADMIN)) return -EACCES; /* do message unit read. */ ptmpQbuffer = (uint8_t *)buf; spin_lock_irqsave(&acb->rqbuffer_lock, flags); if (acb->rqbuf_getIndex != acb->rqbuf_putIndex) { unsigned int tail = acb->rqbuf_getIndex; unsigned int head = acb->rqbuf_putIndex; unsigned int cnt_to_end = CIRC_CNT_TO_END(head, tail, ARCMSR_MAX_QBUFFER); allxfer_len = CIRC_CNT(head, tail, ARCMSR_MAX_QBUFFER); if (allxfer_len > ARCMSR_API_DATA_BUFLEN) allxfer_len = ARCMSR_API_DATA_BUFLEN; if (allxfer_len <= cnt_to_end) memcpy(ptmpQbuffer, acb->rqbuffer + tail, allxfer_len); else { memcpy(ptmpQbuffer, acb->rqbuffer + tail, cnt_to_end); memcpy(ptmpQbuffer + cnt_to_end, acb->rqbuffer, allxfer_len - cnt_to_end); } acb->rqbuf_getIndex = (acb->rqbuf_getIndex + allxfer_len) % ARCMSR_MAX_QBUFFER; } if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { struct QBUFFER __iomem *prbuffer; acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; prbuffer = arcmsr_get_iop_rqbuffer(acb); if (arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0) acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW; } spin_unlock_irqrestore(&acb->rqbuffer_lock, flags); return allxfer_len; } static ssize_t arcmsr_sysfs_iop_message_write(struct file *filp, struct kobject *kobj, struct bin_attribute *bin, char *buf, loff_t off, size_t count) { struct device *dev = container_of(kobj,struct device,kobj); struct Scsi_Host *host = class_to_shost(dev); struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; int32_t user_len, cnt2end; uint8_t *pQbuffer, *ptmpuserbuffer; unsigned long flags; if (!capable(CAP_SYS_ADMIN)) return -EACCES; if (count > ARCMSR_API_DATA_BUFLEN) return -EINVAL; /* do message unit write. */ ptmpuserbuffer = (uint8_t *)buf; user_len = (int32_t)count; spin_lock_irqsave(&acb->wqbuffer_lock, flags); if (acb->wqbuf_putIndex != acb->wqbuf_getIndex) { arcmsr_write_ioctldata2iop(acb); spin_unlock_irqrestore(&acb->wqbuffer_lock, flags); return 0; /*need retry*/ } else { pQbuffer = &acb->wqbuffer[acb->wqbuf_putIndex]; cnt2end = ARCMSR_MAX_QBUFFER - acb->wqbuf_putIndex; if (user_len > cnt2end) { memcpy(pQbuffer, ptmpuserbuffer, cnt2end); ptmpuserbuffer += cnt2end; user_len -= cnt2end; acb->wqbuf_putIndex = 0; pQbuffer = acb->wqbuffer; } memcpy(pQbuffer, ptmpuserbuffer, user_len); acb->wqbuf_putIndex += user_len; acb->wqbuf_putIndex %= ARCMSR_MAX_QBUFFER; if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) { acb->acb_flags &= ~ACB_F_MESSAGE_WQBUFFER_CLEARED; arcmsr_write_ioctldata2iop(acb); } spin_unlock_irqrestore(&acb->wqbuffer_lock, flags); return count; } } static ssize_t arcmsr_sysfs_iop_message_clear(struct file *filp, struct kobject *kobj, struct bin_attribute *bin, char *buf, loff_t off, size_t count) { struct device *dev = container_of(kobj,struct device,kobj); struct Scsi_Host *host = class_to_shost(dev); struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; uint8_t *pQbuffer; unsigned long flags; if (!capable(CAP_SYS_ADMIN)) return -EACCES; arcmsr_clear_iop2drv_rqueue_buffer(acb); acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED | ACB_F_MESSAGE_RQBUFFER_CLEARED | ACB_F_MESSAGE_WQBUFFER_READED); spin_lock_irqsave(&acb->rqbuffer_lock, flags); acb->rqbuf_getIndex = 0; acb->rqbuf_putIndex = 0; spin_unlock_irqrestore(&acb->rqbuffer_lock, flags); spin_lock_irqsave(&acb->wqbuffer_lock, flags); acb->wqbuf_getIndex = 0; acb->wqbuf_putIndex = 0; spin_unlock_irqrestore(&acb->wqbuffer_lock, flags); pQbuffer = acb->rqbuffer; memset(pQbuffer, 0, sizeof (struct QBUFFER)); pQbuffer = acb->wqbuffer; memset(pQbuffer, 0, sizeof (struct QBUFFER)); return 1; } static const struct bin_attribute arcmsr_sysfs_message_read_attr = { .attr = { .name = "mu_read", .mode = S_IRUSR , }, .size = ARCMSR_API_DATA_BUFLEN, .read = arcmsr_sysfs_iop_message_read, }; static const struct bin_attribute arcmsr_sysfs_message_write_attr = { .attr = { .name = "mu_write", .mode = S_IWUSR, }, .size = ARCMSR_API_DATA_BUFLEN, .write = arcmsr_sysfs_iop_message_write, }; static const struct bin_attribute arcmsr_sysfs_message_clear_attr = { .attr = { .name = "mu_clear", .mode = S_IWUSR, }, .size = 1, .write = arcmsr_sysfs_iop_message_clear, }; int arcmsr_alloc_sysfs_attr(struct AdapterControlBlock *acb) { struct Scsi_Host *host = acb->host; int error; error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr); if (error) { printk(KERN_ERR "arcmsr: alloc sysfs mu_read failed\n"); goto error_bin_file_message_read; } error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr); if (error) { printk(KERN_ERR "arcmsr: alloc sysfs mu_write failed\n"); goto error_bin_file_message_write; } error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_clear_attr); if (error) { printk(KERN_ERR "arcmsr: alloc sysfs mu_clear failed\n"); goto error_bin_file_message_clear; } return 0; error_bin_file_message_clear: sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr); error_bin_file_message_write: sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr); error_bin_file_message_read: return error; } void arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb) { struct Scsi_Host *host = acb->host; sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_clear_attr); sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr); sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr); } static ssize_t arcmsr_attr_host_driver_version(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "%s\n", ARCMSR_DRIVER_VERSION); } static ssize_t arcmsr_attr_host_driver_posted_cmd(struct device *dev, struct device_attribute *attr, char *buf) { struct Scsi_Host *host = class_to_shost(dev); struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; return snprintf(buf, PAGE_SIZE, "%4d\n", atomic_read(&acb->ccboutstandingcount)); } static ssize_t arcmsr_attr_host_driver_reset(struct device *dev, struct device_attribute *attr, char *buf) { struct Scsi_Host *host = class_to_shost(dev); struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; return snprintf(buf, PAGE_SIZE, "%4d\n", acb->num_resets); } static ssize_t arcmsr_attr_host_driver_abort(struct device *dev, struct device_attribute *attr, char *buf) { struct Scsi_Host *host = class_to_shost(dev); struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; return snprintf(buf, PAGE_SIZE, "%4d\n", acb->num_aborts); } static ssize_t arcmsr_attr_host_fw_model(struct device *dev, struct device_attribute *attr, char *buf) { struct Scsi_Host *host = class_to_shost(dev); struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; return snprintf(buf, PAGE_SIZE, "%s\n", acb->firm_model); } static ssize_t arcmsr_attr_host_fw_version(struct device *dev, struct device_attribute *attr, char *buf) { struct Scsi_Host *host = class_to_shost(dev); struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; return snprintf(buf, PAGE_SIZE, "%s\n", acb->firm_version); } static ssize_t arcmsr_attr_host_fw_request_len(struct device *dev, struct device_attribute *attr, char *buf) { struct Scsi_Host *host = class_to_shost(dev); struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; return snprintf(buf, PAGE_SIZE, "%4d\n", acb->firm_request_len); } static ssize_t arcmsr_attr_host_fw_numbers_queue(struct device *dev, struct device_attribute *attr, char *buf) { struct Scsi_Host *host = class_to_shost(dev); struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; return snprintf(buf, PAGE_SIZE, "%4d\n", acb->firm_numbers_queue); } static ssize_t arcmsr_attr_host_fw_sdram_size(struct device *dev, struct device_attribute *attr, char *buf) { struct Scsi_Host *host = class_to_shost(dev); struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; return snprintf(buf, PAGE_SIZE, "%4d\n", acb->firm_sdram_size); } static ssize_t arcmsr_attr_host_fw_hd_channels(struct device *dev, struct device_attribute *attr, char *buf) { struct Scsi_Host *host = class_to_shost(dev); struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; return snprintf(buf, PAGE_SIZE, "%4d\n", acb->firm_hd_channels); } static DEVICE_ATTR(host_driver_version, S_IRUGO, arcmsr_attr_host_driver_version, NULL); static DEVICE_ATTR(host_driver_posted_cmd, S_IRUGO, arcmsr_attr_host_driver_posted_cmd, NULL); static DEVICE_ATTR(host_driver_reset, S_IRUGO, arcmsr_attr_host_driver_reset, NULL); static DEVICE_ATTR(host_driver_abort, S_IRUGO, arcmsr_attr_host_driver_abort, NULL); static DEVICE_ATTR(host_fw_model, S_IRUGO, arcmsr_attr_host_fw_model, NULL); static DEVICE_ATTR(host_fw_version, S_IRUGO, arcmsr_attr_host_fw_version, NULL); static DEVICE_ATTR(host_fw_request_len, S_IRUGO, arcmsr_attr_host_fw_request_len, NULL); static DEVICE_ATTR(host_fw_numbers_queue, S_IRUGO, arcmsr_attr_host_fw_numbers_queue, NULL); static DEVICE_ATTR(host_fw_sdram_size, S_IRUGO, arcmsr_attr_host_fw_sdram_size, NULL); static DEVICE_ATTR(host_fw_hd_channels, S_IRUGO, arcmsr_attr_host_fw_hd_channels, NULL); struct device_attribute *arcmsr_host_attrs[] = { &dev_attr_host_driver_version, &dev_attr_host_driver_posted_cmd, &dev_attr_host_driver_reset, &dev_attr_host_driver_abort, &dev_attr_host_fw_model, &dev_attr_host_fw_version, &dev_attr_host_fw_request_len, &dev_attr_host_fw_numbers_queue, &dev_attr_host_fw_sdram_size, &dev_attr_host_fw_hd_channels, NULL, };