/* ******************************************************************************* ** O.S : Linux ** FILE NAME : arcmsr_attr.c ** BY : Erich Chen ** 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 <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/errno.h> #include <linux/delay.h> #include <linux/pci.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_device.h> #include <scsi/scsi_host.h> #include <scsi/scsi_transport.h> #include "arcmsr.h" struct class_device_attribute *arcmsr_host_attrs[]; static ssize_t arcmsr_sysfs_iop_message_read(struct kobject *kobj, struct bin_attribute *bin, char *buf, loff_t off, size_t count) { struct class_device *cdev = container_of(kobj,struct class_device,kobj); struct Scsi_Host *host = class_to_shost(cdev); struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; uint8_t *pQbuffer,*ptmpQbuffer; int32_t allxfer_len = 0; if (!capable(CAP_SYS_ADMIN)) return -EACCES; /* do message unit read. */ ptmpQbuffer = (uint8_t *)buf; while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex) && (allxfer_len < 1031)) { pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex]; memcpy(ptmpQbuffer, pQbuffer, 1); acb->rqbuf_firstindex++; acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER; ptmpQbuffer++; allxfer_len++; } if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { struct QBUFFER __iomem *prbuffer; uint8_t __iomem *iop_data; int32_t iop_len; acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; prbuffer = arcmsr_get_iop_rqbuffer(acb); iop_data = prbuffer->data; iop_len = readl(&prbuffer->data_len); while (iop_len > 0) { acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data); acb->rqbuf_lastindex++; acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER; iop_data++; iop_len--; } arcmsr_iop_message_read(acb); } return (allxfer_len); } static ssize_t arcmsr_sysfs_iop_message_write(struct kobject *kobj, struct bin_attribute *bin, char *buf, loff_t off, size_t count) { struct class_device *cdev = container_of(kobj,struct class_device,kobj); struct Scsi_Host *host = class_to_shost(cdev); struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex; uint8_t *pQbuffer, *ptmpuserbuffer; if (!capable(CAP_SYS_ADMIN)) return -EACCES; if (count > 1032) return -EINVAL; /* do message unit write. */ ptmpuserbuffer = (uint8_t *)buf; user_len = (int32_t)count; wqbuf_lastindex = acb->wqbuf_lastindex; wqbuf_firstindex = acb->wqbuf_firstindex; if (wqbuf_lastindex != wqbuf_firstindex) { arcmsr_post_ioctldata2iop(acb); return 0; /*need retry*/ } else { my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1) &(ARCMSR_MAX_QBUFFER - 1); if (my_empty_len >= user_len) { while (user_len > 0) { pQbuffer = &acb->wqbuffer[acb->wqbuf_lastindex]; memcpy(pQbuffer, ptmpuserbuffer, 1); acb->wqbuf_lastindex++; acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER; ptmpuserbuffer++; user_len--; } if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) { acb->acb_flags &= ~ACB_F_MESSAGE_WQBUFFER_CLEARED; arcmsr_post_ioctldata2iop(acb); } return count; } else { return 0; /*need retry*/ } } } static ssize_t arcmsr_sysfs_iop_message_clear(struct kobject *kobj, struct bin_attribute *bin, char *buf, loff_t off, size_t count) { struct class_device *cdev = container_of(kobj,struct class_device,kobj); struct Scsi_Host *host = class_to_shost(cdev); struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; uint8_t *pQbuffer; if (!capable(CAP_SYS_ADMIN)) return -EACCES; if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; arcmsr_iop_message_read(acb); } acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED | ACB_F_MESSAGE_RQBUFFER_CLEARED | ACB_F_MESSAGE_WQBUFFER_READED); acb->rqbuf_firstindex = 0; acb->rqbuf_lastindex = 0; acb->wqbuf_firstindex = 0; acb->wqbuf_lastindex = 0; pQbuffer = acb->rqbuffer; memset(pQbuffer, 0, sizeof (struct QBUFFER)); pQbuffer = acb->wqbuffer; memset(pQbuffer, 0, sizeof (struct QBUFFER)); return 1; } static struct bin_attribute arcmsr_sysfs_message_read_attr = { .attr = { .name = "mu_read", .mode = S_IRUSR , .owner = THIS_MODULE, }, .size = 1032, .read = arcmsr_sysfs_iop_message_read, }; static struct bin_attribute arcmsr_sysfs_message_write_attr = { .attr = { .name = "mu_write", .mode = S_IWUSR, .owner = THIS_MODULE, }, .size = 1032, .write = arcmsr_sysfs_iop_message_write, }; static struct bin_attribute arcmsr_sysfs_message_clear_attr = { .attr = { .name = "mu_clear", .mode = S_IWUSR, .owner = THIS_MODULE, }, .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_classdev.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_classdev.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_classdev.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_classdev.kobj, &arcmsr_sysfs_message_write_attr); error_bin_file_message_write: sysfs_remove_bin_file(&host->shost_classdev.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_classdev.kobj, &arcmsr_sysfs_message_clear_attr); sysfs_remove_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_write_attr); sysfs_remove_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_read_attr); } static ssize_t arcmsr_attr_host_driver_version(struct class_device *cdev, char *buf) { return snprintf(buf, PAGE_SIZE, "%s\n", ARCMSR_DRIVER_VERSION); } static ssize_t arcmsr_attr_host_driver_posted_cmd(struct class_device *cdev, char *buf) { struct Scsi_Host *host = class_to_shost(cdev); 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 class_device *cdev, char *buf) { struct Scsi_Host *host = class_to_shost(cdev); 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 class_device *cdev, char *buf) { struct Scsi_Host *host = class_to_shost(cdev); 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 class_device *cdev, char *buf) { struct Scsi_Host *host = class_to_shost(cdev); 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 class_device *cdev, char *buf) { struct Scsi_Host *host = class_to_shost(cdev); 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 class_device *cdev, char *buf) { struct Scsi_Host *host = class_to_shost(cdev); 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 class_device *cdev, char *buf) { struct Scsi_Host *host = class_to_shost(cdev); 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 class_device *cdev, char *buf) { struct Scsi_Host *host = class_to_shost(cdev); 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 class_device *cdev, char *buf) { struct Scsi_Host *host = class_to_shost(cdev); struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; return snprintf(buf, PAGE_SIZE, "%4d\n", acb->firm_hd_channels); } static CLASS_DEVICE_ATTR(host_driver_version, S_IRUGO, arcmsr_attr_host_driver_version, NULL); static CLASS_DEVICE_ATTR(host_driver_posted_cmd, S_IRUGO, arcmsr_attr_host_driver_posted_cmd, NULL); static CLASS_DEVICE_ATTR(host_driver_reset, S_IRUGO, arcmsr_attr_host_driver_reset, NULL); static CLASS_DEVICE_ATTR(host_driver_abort, S_IRUGO, arcmsr_attr_host_driver_abort, NULL); static CLASS_DEVICE_ATTR(host_fw_model, S_IRUGO, arcmsr_attr_host_fw_model, NULL); static CLASS_DEVICE_ATTR(host_fw_version, S_IRUGO, arcmsr_attr_host_fw_version, NULL); static CLASS_DEVICE_ATTR(host_fw_request_len, S_IRUGO, arcmsr_attr_host_fw_request_len, NULL); static CLASS_DEVICE_ATTR(host_fw_numbers_queue, S_IRUGO, arcmsr_attr_host_fw_numbers_queue, NULL); static CLASS_DEVICE_ATTR(host_fw_sdram_size, S_IRUGO, arcmsr_attr_host_fw_sdram_size, NULL); static CLASS_DEVICE_ATTR(host_fw_hd_channels, S_IRUGO, arcmsr_attr_host_fw_hd_channels, NULL); struct class_device_attribute *arcmsr_host_attrs[] = { &class_device_attr_host_driver_version, &class_device_attr_host_driver_posted_cmd, &class_device_attr_host_driver_reset, &class_device_attr_host_driver_abort, &class_device_attr_host_fw_model, &class_device_attr_host_fw_version, &class_device_attr_host_fw_request_len, &class_device_attr_host_fw_numbers_queue, &class_device_attr_host_fw_sdram_size, &class_device_attr_host_fw_hd_channels, NULL, };