Initial import

1 files changed, 404 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..9c86481f7
--- /dev/null
+++ b/drivers/scsi/arcmsr/arcmsr_attr.c
@@ -0,0 +1,404 @@
+/*
+*******************************************************************************
+**        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 <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"
+
+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 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 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 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,
+};