1 files changed, 0 insertions, 368 deletions
diff --git a/drivers/scsi/ibmvscsi/rpa_vscsi.c b/drivers/scsi/ibmvscsi/rpa_vscsi.c
deleted file mode 100644
index f48ae0190d95..000000000000
--- a/drivers/scsi/ibmvscsi/rpa_vscsi.c
+++ /dev/null
@@ -1,368 +0,0 @@
-/* ------------------------------------------------------------
- * rpa_vscsi.c
- * (C) Copyright IBM Corporation 1994, 2003
- * Authors: Colin DeVilbiss (devilbis@us.ibm.com)
- *          Santiago Leon (santil@us.ibm.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
- * USA
- *
- * ------------------------------------------------------------
- * RPA-specific functions of the SCSI host adapter for Virtual I/O devices
- *
- * This driver allows the Linux SCSI peripheral drivers to directly
- * access devices in the hosting partition, either on an iSeries
- * hypervisor system or a converged hypervisor system.
- */
-
-#include <asm/vio.h>
-#include <asm/prom.h>
-#include <asm/iommu.h>
-#include <asm/hvcall.h>
-#include <linux/delay.h>
-#include <linux/dma-mapping.h>
-#include <linux/gfp.h>
-#include <linux/interrupt.h>
-#include "ibmvscsi.h"
-
-static char partition_name[97] = "UNKNOWN";
-static unsigned int partition_number = -1;
-
-/* ------------------------------------------------------------
- * Routines for managing the command/response queue
- */
-/**
- * rpavscsi_handle_event: - Interrupt handler for crq events
- * @irq:	number of irq to handle, not used
- * @dev_instance: ibmvscsi_host_data of host that received interrupt
- *
- * Disables interrupts and schedules srp_task
- * Always returns IRQ_HANDLED
- */
-static irqreturn_t rpavscsi_handle_event(int irq, void *dev_instance)
-{
-	struct ibmvscsi_host_data *hostdata =
-	    (struct ibmvscsi_host_data *)dev_instance;
-	vio_disable_interrupts(to_vio_dev(hostdata->dev));
-	tasklet_schedule(&hostdata->srp_task);
-	return IRQ_HANDLED;
-}
-
-/**
- * release_crq_queue: - Deallocates data and unregisters CRQ
- * @queue:	crq_queue to initialize and register
- * @host_data:	ibmvscsi_host_data of host
- *
- * Frees irq, deallocates a page for messages, unmaps dma, and unregisters
- * the crq with the hypervisor.
- */
-static void rpavscsi_release_crq_queue(struct crq_queue *queue,
-				       struct ibmvscsi_host_data *hostdata,
-				       int max_requests)
-{
-	long rc = 0;
-	struct vio_dev *vdev = to_vio_dev(hostdata->dev);
-	free_irq(vdev->irq, (void *)hostdata);
-	tasklet_kill(&hostdata->srp_task);
-	do {
-		if (rc)
-			msleep(100);
-		rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
-	} while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
-	dma_unmap_single(hostdata->dev,
-			 queue->msg_token,
-			 queue->size * sizeof(*queue->msgs), DMA_BIDIRECTIONAL);
-	free_page((unsigned long)queue->msgs);
-}
-
-/**
- * crq_queue_next_crq: - Returns the next entry in message queue
- * @queue:	crq_queue to use
- *
- * Returns pointer to next entry in queue, or NULL if there are no new 
- * entried in the CRQ.
- */
-static struct viosrp_crq *crq_queue_next_crq(struct crq_queue *queue)
-{
-	struct viosrp_crq *crq;
-	unsigned long flags;
-
-	spin_lock_irqsave(&queue->lock, flags);
-	crq = &queue->msgs[queue->cur];
-	if (crq->valid & 0x80) {
-		if (++queue->cur == queue->size)
-			queue->cur = 0;
-	} else
-		crq = NULL;
-	spin_unlock_irqrestore(&queue->lock, flags);
-
-	return crq;
-}
-
-/**
- * rpavscsi_send_crq: - Send a CRQ
- * @hostdata:	the adapter
- * @word1:	the first 64 bits of the data
- * @word2:	the second 64 bits of the data
- */
-static int rpavscsi_send_crq(struct ibmvscsi_host_data *hostdata,
-			     u64 word1, u64 word2)
-{
-	struct vio_dev *vdev = to_vio_dev(hostdata->dev);
-
-	return plpar_hcall_norets(H_SEND_CRQ, vdev->unit_address, word1, word2);
-}
-
-/**
- * rpavscsi_task: - Process srps asynchronously
- * @data:	ibmvscsi_host_data of host
- */
-static void rpavscsi_task(void *data)
-{
-	struct ibmvscsi_host_data *hostdata = (struct ibmvscsi_host_data *)data;
-	struct vio_dev *vdev = to_vio_dev(hostdata->dev);
-	struct viosrp_crq *crq;
-	int done = 0;
-
-	while (!done) {
-		/* Pull all the valid messages off the CRQ */
-		while ((crq = crq_queue_next_crq(&hostdata->queue)) != NULL) {
-			ibmvscsi_handle_crq(crq, hostdata);
-			crq->valid = 0x00;
-		}
-
-		vio_enable_interrupts(vdev);
-		if ((crq = crq_queue_next_crq(&hostdata->queue)) != NULL) {
-			vio_disable_interrupts(vdev);
-			ibmvscsi_handle_crq(crq, hostdata);
-			crq->valid = 0x00;
-		} else {
-			done = 1;
-		}
-	}
-}
-
-static void gather_partition_info(void)
-{
-	struct device_node *rootdn;
-
-	const char *ppartition_name;
-	const unsigned int *p_number_ptr;
-
-	/* Retrieve information about this partition */
-	rootdn = of_find_node_by_path("/");
-	if (!rootdn) {
-		return;
-	}
-
-	ppartition_name = of_get_property(rootdn, "ibm,partition-name", NULL);
-	if (ppartition_name)
-		strncpy(partition_name, ppartition_name,
-				sizeof(partition_name));
-	p_number_ptr = of_get_property(rootdn, "ibm,partition-no", NULL);
-	if (p_number_ptr)
-		partition_number = *p_number_ptr;
-	of_node_put(rootdn);
-}
-
-static void set_adapter_info(struct ibmvscsi_host_data *hostdata)
-{
-	memset(&hostdata->madapter_info, 0x00,
-			sizeof(hostdata->madapter_info));
-
-	dev_info(hostdata->dev, "SRP_VERSION: %s\n", SRP_VERSION);
-	strcpy(hostdata->madapter_info.srp_version, SRP_VERSION);
-
-	strncpy(hostdata->madapter_info.partition_name, partition_name,
-			sizeof(hostdata->madapter_info.partition_name));
-
-	hostdata->madapter_info.partition_number = partition_number;
-
-	hostdata->madapter_info.mad_version = 1;
-	hostdata->madapter_info.os_type = 2;
-}
-
-/**
- * reset_crq_queue: - resets a crq after a failure
- * @queue:	crq_queue to initialize and register
- * @hostdata:	ibmvscsi_host_data of host
- *
- */
-static int rpavscsi_reset_crq_queue(struct crq_queue *queue,
-				    struct ibmvscsi_host_data *hostdata)
-{
-	int rc = 0;
-	struct vio_dev *vdev = to_vio_dev(hostdata->dev);
-
-	/* Close the CRQ */
-	do {
-		if (rc)
-			msleep(100);
-		rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
-	} while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
-
-	/* Clean out the queue */
-	memset(queue->msgs, 0x00, PAGE_SIZE);
-	queue->cur = 0;
-
-	set_adapter_info(hostdata);
-
-	/* And re-open it again */
-	rc = plpar_hcall_norets(H_REG_CRQ,
-				vdev->unit_address,
-				queue->msg_token, PAGE_SIZE);
-	if (rc == 2) {
-		/* Adapter is good, but other end is not ready */
-		dev_warn(hostdata->dev, "Partner adapter not ready\n");
-	} else if (rc != 0) {
-		dev_warn(hostdata->dev, "couldn't register crq--rc 0x%x\n", rc);
-	}
-	return rc;
-}
-
-/**
- * initialize_crq_queue: - Initializes and registers CRQ with hypervisor
- * @queue:	crq_queue to initialize and register
- * @hostdata:	ibmvscsi_host_data of host
- *
- * Allocates a page for messages, maps it for dma, and registers
- * the crq with the hypervisor.
- * Returns zero on success.
- */
-static int rpavscsi_init_crq_queue(struct crq_queue *queue,
-				   struct ibmvscsi_host_data *hostdata,
-				   int max_requests)
-{
-	int rc;
-	int retrc;
-	struct vio_dev *vdev = to_vio_dev(hostdata->dev);
-
-	queue->msgs = (struct viosrp_crq *)get_zeroed_page(GFP_KERNEL);
-
-	if (!queue->msgs)
-		goto malloc_failed;
-	queue->size = PAGE_SIZE / sizeof(*queue->msgs);
-
-	queue->msg_token = dma_map_single(hostdata->dev, queue->msgs,
-					  queue->size * sizeof(*queue->msgs),
-					  DMA_BIDIRECTIONAL);
-
-	if (dma_mapping_error(hostdata->dev, queue->msg_token))
-		goto map_failed;
-
-	gather_partition_info();
-	set_adapter_info(hostdata);
-
-	retrc = rc = plpar_hcall_norets(H_REG_CRQ,
-				vdev->unit_address,
-				queue->msg_token, PAGE_SIZE);
-	if (rc == H_RESOURCE)
-		/* maybe kexecing and resource is busy. try a reset */
-		rc = rpavscsi_reset_crq_queue(queue,
-					      hostdata);
-
-	if (rc == 2) {
-		/* Adapter is good, but other end is not ready */
-		dev_warn(hostdata->dev, "Partner adapter not ready\n");
-		retrc = 0;
-	} else if (rc != 0) {
-		dev_warn(hostdata->dev, "Error %d opening adapter\n", rc);
-		goto reg_crq_failed;
-	}
-
-	queue->cur = 0;
-	spin_lock_init(&queue->lock);
-
-	tasklet_init(&hostdata->srp_task, (void *)rpavscsi_task,
-		     (unsigned long)hostdata);
-
-	if (request_irq(vdev->irq,
-			rpavscsi_handle_event,
-			0, "ibmvscsi", (void *)hostdata) != 0) {
-		dev_err(hostdata->dev, "couldn't register irq 0x%x\n",
-			vdev->irq);
-		goto req_irq_failed;
-	}
-
-	rc = vio_enable_interrupts(vdev);
-	if (rc != 0) {
-		dev_err(hostdata->dev, "Error %d enabling interrupts!!!\n", rc);
-		goto req_irq_failed;
-	}
-
-	return retrc;
-
-      req_irq_failed:
-	tasklet_kill(&hostdata->srp_task);
-	rc = 0;
-	do {
-		if (rc)
-			msleep(100);
-		rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
-	} while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
-      reg_crq_failed:
-	dma_unmap_single(hostdata->dev,
-			 queue->msg_token,
-			 queue->size * sizeof(*queue->msgs), DMA_BIDIRECTIONAL);
-      map_failed:
-	free_page((unsigned long)queue->msgs);
-      malloc_failed:
-	return -1;
-}
-
-/**
- * reenable_crq_queue: - reenables a crq after
- * @queue:	crq_queue to initialize and register
- * @hostdata:	ibmvscsi_host_data of host
- *
- */
-static int rpavscsi_reenable_crq_queue(struct crq_queue *queue,
-				       struct ibmvscsi_host_data *hostdata)
-{
-	int rc = 0;
-	struct vio_dev *vdev = to_vio_dev(hostdata->dev);
-
-	/* Re-enable the CRQ */
-	do {
-		if (rc)
-			msleep(100);
-		rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address);
-	} while ((rc == H_IN_PROGRESS) || (rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
-
-	if (rc)
-		dev_err(hostdata->dev, "Error %d enabling adapter\n", rc);
-	return rc;
-}
-
-/**
- * rpavscsi_resume: - resume after suspend
- * @hostdata:	ibmvscsi_host_data of host
- *
- */
-static int rpavscsi_resume(struct ibmvscsi_host_data *hostdata)
-{
-	vio_disable_interrupts(to_vio_dev(hostdata->dev));
-	tasklet_schedule(&hostdata->srp_task);
-	return 0;
-}
-
-struct ibmvscsi_ops rpavscsi_ops = {
-	.init_crq_queue = rpavscsi_init_crq_queue,
-	.release_crq_queue = rpavscsi_release_crq_queue,
-	.reset_crq_queue = rpavscsi_reset_crq_queue,
-	.reenable_crq_queue = rpavscsi_reenable_crq_queue,
-	.send_crq = rpavscsi_send_crq,
-	.resume = rpavscsi_resume,
-};