1 files changed, 0 insertions, 446 deletions

diff --git a/drivers/s390/scsi/zfcp_cfdc.c b/drivers/s390/scsi/zfcp_cfdc.c
deleted file mode 100644
index 49b82e46629e..000000000000
--- a/drivers/s390/scsi/zfcp_cfdc.c
+++ /dev/null
@@ -1,446 +0,0 @@
-/*
- * zfcp device driver
- *
- * Userspace interface for accessing the
- * Access Control Lists / Control File Data Channel;
- * handling of response code and states for ports and LUNs.
- *
- * Copyright IBM Corp. 2008, 2010
- */
-
-#define KMSG_COMPONENT "zfcp"
-#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
-
-#include <linux/compat.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <linux/miscdevice.h>
-#include <asm/compat.h>
-#include <asm/ccwdev.h>
-#include "zfcp_def.h"
-#include "zfcp_ext.h"
-#include "zfcp_fsf.h"
-
-#define ZFCP_CFDC_CMND_DOWNLOAD_NORMAL		0x00010001
-#define ZFCP_CFDC_CMND_DOWNLOAD_FORCE		0x00010101
-#define ZFCP_CFDC_CMND_FULL_ACCESS		0x00000201
-#define ZFCP_CFDC_CMND_RESTRICTED_ACCESS	0x00000401
-#define ZFCP_CFDC_CMND_UPLOAD			0x00010002
-
-#define ZFCP_CFDC_DOWNLOAD			0x00000001
-#define ZFCP_CFDC_UPLOAD			0x00000002
-#define ZFCP_CFDC_WITH_CONTROL_FILE		0x00010000
-
-#define ZFCP_CFDC_IOC_MAGIC                     0xDD
-#define ZFCP_CFDC_IOC \
-	_IOWR(ZFCP_CFDC_IOC_MAGIC, 0, struct zfcp_cfdc_data)
-
-/**
- * struct zfcp_cfdc_data - data for ioctl cfdc interface
- * @signature: request signature
- * @devno: FCP adapter device number
- * @command: command code
- * @fsf_status: returns status of FSF command to userspace
- * @fsf_status_qual: returned to userspace
- * @payloads: access conflicts list
- * @control_file: access control table
- */
-struct zfcp_cfdc_data {
-	u32 signature;
-	u32 devno;
-	u32 command;
-	u32 fsf_status;
-	u8  fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE];
-	u8  payloads[256];
-	u8  control_file[0];
-};
-
-static int zfcp_cfdc_copy_from_user(struct scatterlist *sg,
-				    void __user *user_buffer)
-{
-	unsigned int length;
-	unsigned int size = ZFCP_CFDC_MAX_SIZE;
-
-	while (size) {
-		length = min((unsigned int)size, sg->length);
-		if (copy_from_user(sg_virt(sg++), user_buffer, length))
-			return -EFAULT;
-		user_buffer += length;
-		size -= length;
-	}
-	return 0;
-}
-
-static int zfcp_cfdc_copy_to_user(void __user  *user_buffer,
-				  struct scatterlist *sg)
-{
-	unsigned int length;
-	unsigned int size = ZFCP_CFDC_MAX_SIZE;
-
-	while (size) {
-		length = min((unsigned int) size, sg->length);
-		if (copy_to_user(user_buffer, sg_virt(sg++), length))
-			return -EFAULT;
-		user_buffer += length;
-		size -= length;
-	}
-	return 0;
-}
-
-static struct zfcp_adapter *zfcp_cfdc_get_adapter(u32 devno)
-{
-	char busid[9];
-	struct ccw_device *cdev;
-	struct zfcp_adapter *adapter;
-
-	snprintf(busid, sizeof(busid), "0.0.%04x", devno);
-	cdev = get_ccwdev_by_busid(&zfcp_ccw_driver, busid);
-	if (!cdev)
-		return NULL;
-
-	adapter = zfcp_ccw_adapter_by_cdev(cdev);
-
-	put_device(&cdev->dev);
-	return adapter;
-}
-
-static int zfcp_cfdc_set_fsf(struct zfcp_fsf_cfdc *fsf_cfdc, int command)
-{
-	switch (command) {
-	case ZFCP_CFDC_CMND_DOWNLOAD_NORMAL:
-		fsf_cfdc->command = FSF_QTCB_DOWNLOAD_CONTROL_FILE;
-		fsf_cfdc->option = FSF_CFDC_OPTION_NORMAL_MODE;
-		break;
-	case ZFCP_CFDC_CMND_DOWNLOAD_FORCE:
-		fsf_cfdc->command = FSF_QTCB_DOWNLOAD_CONTROL_FILE;
-		fsf_cfdc->option = FSF_CFDC_OPTION_FORCE;
-		break;
-	case ZFCP_CFDC_CMND_FULL_ACCESS:
-		fsf_cfdc->command = FSF_QTCB_DOWNLOAD_CONTROL_FILE;
-		fsf_cfdc->option = FSF_CFDC_OPTION_FULL_ACCESS;
-		break;
-	case ZFCP_CFDC_CMND_RESTRICTED_ACCESS:
-		fsf_cfdc->command = FSF_QTCB_DOWNLOAD_CONTROL_FILE;
-		fsf_cfdc->option = FSF_CFDC_OPTION_RESTRICTED_ACCESS;
-		break;
-	case ZFCP_CFDC_CMND_UPLOAD:
-		fsf_cfdc->command = FSF_QTCB_UPLOAD_CONTROL_FILE;
-		fsf_cfdc->option = 0;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int zfcp_cfdc_sg_setup(int command, struct scatterlist *sg,
-			      u8 __user *control_file)
-{
-	int retval;
-	retval = zfcp_sg_setup_table(sg, ZFCP_CFDC_PAGES);
-	if (retval)
-		return retval;
-
-	sg[ZFCP_CFDC_PAGES - 1].length = ZFCP_CFDC_MAX_SIZE % PAGE_SIZE;
-
-	if (command & ZFCP_CFDC_WITH_CONTROL_FILE &&
-	    command & ZFCP_CFDC_DOWNLOAD) {
-		retval = zfcp_cfdc_copy_from_user(sg, control_file);
-		if (retval) {
-			zfcp_sg_free_table(sg, ZFCP_CFDC_PAGES);
-			return -EFAULT;
-		}
-	}
-
-	return 0;
-}
-
-static void zfcp_cfdc_req_to_sense(struct zfcp_cfdc_data *data,
-				   struct zfcp_fsf_req *req)
-{
-	data->fsf_status = req->qtcb->header.fsf_status;
-	memcpy(&data->fsf_status_qual, &req->qtcb->header.fsf_status_qual,
-	       sizeof(union fsf_status_qual));
-	memcpy(&data->payloads, &req->qtcb->bottom.support.els,
-	       sizeof(req->qtcb->bottom.support.els));
-}
-
-static long zfcp_cfdc_dev_ioctl(struct file *file, unsigned int command,
-				unsigned long arg)
-{
-	struct zfcp_cfdc_data *data;
-	struct zfcp_cfdc_data __user *data_user;
-	struct zfcp_adapter *adapter;
-	struct zfcp_fsf_req *req;
-	struct zfcp_fsf_cfdc *fsf_cfdc;
-	int retval;
-
-	if (command != ZFCP_CFDC_IOC)
-		return -ENOTTY;
-
-	if (is_compat_task())
-		data_user = compat_ptr(arg);
-	else
-		data_user = (void __user *)arg;
-
-	if (!data_user)
-		return -EINVAL;
-
-	fsf_cfdc = kmalloc(sizeof(struct zfcp_fsf_cfdc), GFP_KERNEL);
-	if (!fsf_cfdc)
-		return -ENOMEM;
-
-	data = memdup_user(data_user, sizeof(*data_user));
-	if (IS_ERR(data)) {
-		retval = PTR_ERR(data);
-		goto no_mem_sense;
-	}
-
-	if (data->signature != 0xCFDCACDF) {
-		retval = -EINVAL;
-		goto free_buffer;
-	}
-
-	retval = zfcp_cfdc_set_fsf(fsf_cfdc, data->command);
-
-	adapter = zfcp_cfdc_get_adapter(data->devno);
-	if (!adapter) {
-		retval = -ENXIO;
-		goto free_buffer;
-	}
-
-	retval = zfcp_cfdc_sg_setup(data->command, fsf_cfdc->sg,
-				    data_user->control_file);
-	if (retval)
-		goto adapter_put;
-	req = zfcp_fsf_control_file(adapter, fsf_cfdc);
-	if (IS_ERR(req)) {
-		retval = PTR_ERR(req);
-		goto free_sg;
-	}
-
-	if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
-		retval = -ENXIO;
-		goto free_fsf;
-	}
-
-	zfcp_cfdc_req_to_sense(data, req);
-	retval = copy_to_user(data_user, data, sizeof(*data_user));
-	if (retval) {
-		retval = -EFAULT;
-		goto free_fsf;
-	}
-
-	if (data->command & ZFCP_CFDC_UPLOAD)
-		retval = zfcp_cfdc_copy_to_user(&data_user->control_file,
-						fsf_cfdc->sg);
-
- free_fsf:
-	zfcp_fsf_req_free(req);
- free_sg:
-	zfcp_sg_free_table(fsf_cfdc->sg, ZFCP_CFDC_PAGES);
- adapter_put:
-	zfcp_ccw_adapter_put(adapter);
- free_buffer:
-	kfree(data);
- no_mem_sense:
-	kfree(fsf_cfdc);
-	return retval;
-}
-
-static const struct file_operations zfcp_cfdc_fops = {
-	.open = nonseekable_open,
-	.unlocked_ioctl = zfcp_cfdc_dev_ioctl,
-#ifdef CONFIG_COMPAT
-	.compat_ioctl = zfcp_cfdc_dev_ioctl,
-#endif
-	.llseek = no_llseek,
-};
-
-struct miscdevice zfcp_cfdc_misc = {
-	.minor = MISC_DYNAMIC_MINOR,
-	.name = "zfcp_cfdc",
-	.fops = &zfcp_cfdc_fops,
-};
-
-/**
- * zfcp_cfdc_adapter_access_changed - Process change in adapter ACT
- * @adapter: Adapter where the Access Control Table (ACT) changed
- *
- * After a change in the adapter ACT, check if access to any
- * previously denied resources is now possible.
- */
-void zfcp_cfdc_adapter_access_changed(struct zfcp_adapter *adapter)
-{
-	unsigned long flags;
-	struct zfcp_port *port;
-	struct scsi_device *sdev;
-	struct zfcp_scsi_dev *zfcp_sdev;
-	int status;
-
-	if (adapter->connection_features & FSF_FEATURE_NPIV_MODE)
-		return;
-
-	read_lock_irqsave(&adapter->port_list_lock, flags);
-	list_for_each_entry(port, &adapter->port_list, list) {
-		status = atomic_read(&port->status);
-		if ((status & ZFCP_STATUS_COMMON_ACCESS_DENIED) ||
-		    (status & ZFCP_STATUS_COMMON_ACCESS_BOXED))
-			zfcp_erp_port_reopen(port,
-					     ZFCP_STATUS_COMMON_ERP_FAILED,
-					     "cfaac_1");
-	}
-	read_unlock_irqrestore(&adapter->port_list_lock, flags);
-
-	shost_for_each_device(sdev, adapter->scsi_host) {
-		zfcp_sdev = sdev_to_zfcp(sdev);
-		status = atomic_read(&zfcp_sdev->status);
-		if ((status & ZFCP_STATUS_COMMON_ACCESS_DENIED) ||
-		    (status & ZFCP_STATUS_COMMON_ACCESS_BOXED))
-			zfcp_erp_lun_reopen(sdev,
-					    ZFCP_STATUS_COMMON_ERP_FAILED,
-					    "cfaac_2");
-	}
-}
-
-static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table)
-{
-	u16 subtable = table >> 16;
-	u16 rule = table & 0xffff;
-	const char *act_type[] = { "unknown", "OS", "WWPN", "DID", "LUN" };
-
-	if (subtable && subtable < ARRAY_SIZE(act_type))
-		dev_warn(&adapter->ccw_device->dev,
-			 "Access denied according to ACT rule type %s, "
-			 "rule %d\n", act_type[subtable], rule);
-}
-
-/**
- * zfcp_cfdc_port_denied - Process "access denied" for port
- * @port: The port where the access has been denied
- * @qual: The FSF status qualifier for the access denied FSF status
- */
-void zfcp_cfdc_port_denied(struct zfcp_port *port,
-			   union fsf_status_qual *qual)
-{
-	dev_warn(&port->adapter->ccw_device->dev,
-		 "Access denied to port 0x%016Lx\n",
-		 (unsigned long long)port->wwpn);
-
-	zfcp_act_eval_err(port->adapter, qual->halfword[0]);
-	zfcp_act_eval_err(port->adapter, qual->halfword[1]);
-	zfcp_erp_set_port_status(port,
-				 ZFCP_STATUS_COMMON_ERP_FAILED |
-				 ZFCP_STATUS_COMMON_ACCESS_DENIED);
-}
-
-/**
- * zfcp_cfdc_lun_denied - Process "access denied" for LUN
- * @sdev: The SCSI device / LUN where the access has been denied
- * @qual: The FSF status qualifier for the access denied FSF status
- */
-void zfcp_cfdc_lun_denied(struct scsi_device *sdev,
-			  union fsf_status_qual *qual)
-{
-	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
-
-	dev_warn(&zfcp_sdev->port->adapter->ccw_device->dev,
-		 "Access denied to LUN 0x%016Lx on port 0x%016Lx\n",
-		 zfcp_scsi_dev_lun(sdev),
-		 (unsigned long long)zfcp_sdev->port->wwpn);
-	zfcp_act_eval_err(zfcp_sdev->port->adapter, qual->halfword[0]);
-	zfcp_act_eval_err(zfcp_sdev->port->adapter, qual->halfword[1]);
-	zfcp_erp_set_lun_status(sdev,
-				ZFCP_STATUS_COMMON_ERP_FAILED |
-				ZFCP_STATUS_COMMON_ACCESS_DENIED);
-
-	atomic_clear_mask(ZFCP_STATUS_LUN_SHARED, &zfcp_sdev->status);
-	atomic_clear_mask(ZFCP_STATUS_LUN_READONLY, &zfcp_sdev->status);
-}
-
-/**
- * zfcp_cfdc_lun_shrng_vltn - Evaluate LUN sharing violation status
- * @sdev: The LUN / SCSI device where sharing violation occurred
- * @qual: The FSF status qualifier from the LUN sharing violation
- */
-void zfcp_cfdc_lun_shrng_vltn(struct scsi_device *sdev,
-			      union fsf_status_qual *qual)
-{
-	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
-
-	if (qual->word[0])
-		dev_warn(&zfcp_sdev->port->adapter->ccw_device->dev,
-			 "LUN 0x%Lx on port 0x%Lx is already in "
-			 "use by CSS%d, MIF Image ID %x\n",
-			 zfcp_scsi_dev_lun(sdev),
-			 (unsigned long long)zfcp_sdev->port->wwpn,
-			 qual->fsf_queue_designator.cssid,
-			 qual->fsf_queue_designator.hla);
-	else
-		zfcp_act_eval_err(zfcp_sdev->port->adapter, qual->word[2]);
-
-	zfcp_erp_set_lun_status(sdev,
-				ZFCP_STATUS_COMMON_ERP_FAILED |
-				ZFCP_STATUS_COMMON_ACCESS_DENIED);
-	atomic_clear_mask(ZFCP_STATUS_LUN_SHARED, &zfcp_sdev->status);
-	atomic_clear_mask(ZFCP_STATUS_LUN_READONLY, &zfcp_sdev->status);
-}
-
-/**
- * zfcp_cfdc_open_lun_eval - Eval access ctrl. status for successful "open lun"
- * @sdev: The SCSI device / LUN where to evaluate the status
- * @bottom: The qtcb bottom with the status from the "open lun"
- *
- * Returns: 0 if LUN is usable, -EACCES if the access control table
- *          reports an unsupported configuration.
- */
-int zfcp_cfdc_open_lun_eval(struct scsi_device *sdev,
-			    struct fsf_qtcb_bottom_support *bottom)
-{
-	int shared, rw;
-	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
-	struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
-
-	if ((adapter->connection_features & FSF_FEATURE_NPIV_MODE) ||
-	    !(adapter->adapter_features & FSF_FEATURE_LUN_SHARING) ||
-	    zfcp_ccw_priv_sch(adapter))
-		return 0;
-
-	shared = !(bottom->lun_access_info & FSF_UNIT_ACCESS_EXCLUSIVE);
-	rw = (bottom->lun_access_info & FSF_UNIT_ACCESS_OUTBOUND_TRANSFER);
-
-	if (shared)
-		atomic_set_mask(ZFCP_STATUS_LUN_SHARED, &zfcp_sdev->status);
-
-	if (!rw) {
-		atomic_set_mask(ZFCP_STATUS_LUN_READONLY, &zfcp_sdev->status);
-		dev_info(&adapter->ccw_device->dev, "SCSI device at LUN "
-			 "0x%016Lx on port 0x%016Lx opened read-only\n",
-			 zfcp_scsi_dev_lun(sdev),
-			 (unsigned long long)zfcp_sdev->port->wwpn);
-	}
-
-	if (!shared && !rw) {
-		dev_err(&adapter->ccw_device->dev, "Exclusive read-only access "
-			"not supported (LUN 0x%016Lx, port 0x%016Lx)\n",
-			zfcp_scsi_dev_lun(sdev),
-			(unsigned long long)zfcp_sdev->port->wwpn);
-		zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED);
-		zfcp_erp_lun_shutdown(sdev, 0, "fsouh_6");
-		return -EACCES;
-	}
-
-	if (shared && rw) {
-		dev_err(&adapter->ccw_device->dev,
-			"Shared read-write access not supported "
-			"(LUN 0x%016Lx, port 0x%016Lx)\n",
-			zfcp_scsi_dev_lun(sdev),
-			(unsigned long long)zfcp_sdev->port->wwpn);
-		zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED);
-		zfcp_erp_lun_shutdown(sdev, 0, "fsosh_8");
-		return -EACCES;
-	}
-
-	return 0;
-}