diff options
Diffstat (limited to 'drivers/scsi/arcmsr/arcmsr_attr.c')
| -rw-r--r-- | drivers/scsi/arcmsr/arcmsr_attr.c | 411 |
1 files changed, 411 insertions, 0 deletions
diff --git a/drivers/scsi/arcmsr/arcmsr_attr.c b/drivers/scsi/arcmsr/arcmsr_attr.c new file mode 100644 index 000000000..baeb5e795 --- /dev/null +++ b/drivers/scsi/arcmsr/arcmsr_attr.c @@ -0,0 +1,411 @@ +/* +******************************************************************************* +** 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.rst +******************************************************************************* +*/ +#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 <linux/circ_buf.h> + +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_transport.h> +#include "arcmsr.h" + +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); + +static struct attribute *arcmsr_host_attrs[] = { + &dev_attr_host_driver_version.attr, + &dev_attr_host_driver_posted_cmd.attr, + &dev_attr_host_driver_reset.attr, + &dev_attr_host_driver_abort.attr, + &dev_attr_host_fw_model.attr, + &dev_attr_host_fw_version.attr, + &dev_attr_host_fw_request_len.attr, + &dev_attr_host_fw_numbers_queue.attr, + &dev_attr_host_fw_sdram_size.attr, + &dev_attr_host_fw_hd_channels.attr, + NULL, +}; + +static const struct attribute_group arcmsr_host_attr_group = { + .attrs = arcmsr_host_attrs, +}; + +const struct attribute_group *arcmsr_host_groups[] = { + &arcmsr_host_attr_group, + NULL +}; |