diff options
Diffstat (limited to 'drivers/message/i2o/i2o_scsi.c')
| -rw-r--r-- | drivers/message/i2o/i2o_scsi.c | 814 |
1 files changed, 0 insertions, 814 deletions
diff --git a/drivers/message/i2o/i2o_scsi.c b/drivers/message/i2o/i2o_scsi.c deleted file mode 100644 index 8152e9fa9d95..000000000000 --- a/drivers/message/i2o/i2o_scsi.c +++ /dev/null @@ -1,814 +0,0 @@ -/* - * 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, 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. - * - * For the avoidance of doubt the "preferred form" of this code is one which - * is in an open non patent encumbered format. Where cryptographic key signing - * forms part of the process of creating an executable the information - * including keys needed to generate an equivalently functional executable - * are deemed to be part of the source code. - * - * Complications for I2O scsi - * - * o Each (bus,lun) is a logical device in I2O. We keep a map - * table. We spoof failed selection for unmapped units - * o Request sense buffers can come back for free. - * o Scatter gather is a bit dynamic. We have to investigate at - * setup time. - * o Some of our resources are dynamically shared. The i2o core - * needs a message reservation protocol to avoid swap v net - * deadlocking. We need to back off queue requests. - * - * In general the firmware wants to help. Where its help isn't performance - * useful we just ignore the aid. Its not worth the code in truth. - * - * Fixes/additions: - * Steve Ralston: - * Scatter gather now works - * Markus Lidel <Markus.Lidel@shadowconnect.com>: - * Minor fixes for 2.6. - * - * To Do: - * 64bit cleanups - * Fix the resource management problems. - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/string.h> -#include <linux/ioport.h> -#include <linux/jiffies.h> -#include <linux/interrupt.h> -#include <linux/timer.h> -#include <linux/delay.h> -#include <linux/proc_fs.h> -#include <linux/prefetch.h> -#include <linux/pci.h> -#include <linux/blkdev.h> -#include <linux/i2o.h> -#include <linux/scatterlist.h> - -#include <asm/dma.h> -#include <asm/io.h> -#include <linux/atomic.h> - -#include <scsi/scsi.h> -#include <scsi/scsi_host.h> -#include <scsi/scsi_device.h> -#include <scsi/scsi_cmnd.h> -#include <scsi/sg.h> - -#define OSM_NAME "scsi-osm" -#define OSM_VERSION "1.316" -#define OSM_DESCRIPTION "I2O SCSI Peripheral OSM" - -static struct i2o_driver i2o_scsi_driver; - -static unsigned int i2o_scsi_max_id = 16; -static unsigned int i2o_scsi_max_lun = 255; - -struct i2o_scsi_host { - struct Scsi_Host *scsi_host; /* pointer to the SCSI host */ - struct i2o_controller *iop; /* pointer to the I2O controller */ - u64 lun; /* lun's used for block devices */ - struct i2o_device *channel[0]; /* channel->i2o_dev mapping table */ -}; - -static struct scsi_host_template i2o_scsi_host_template; - -#define I2O_SCSI_CAN_QUEUE 4 - -/* SCSI OSM class handling definition */ -static struct i2o_class_id i2o_scsi_class_id[] = { - {I2O_CLASS_SCSI_PERIPHERAL}, - {I2O_CLASS_END} -}; - -static struct i2o_scsi_host *i2o_scsi_host_alloc(struct i2o_controller *c) -{ - struct i2o_scsi_host *i2o_shost; - struct i2o_device *i2o_dev; - struct Scsi_Host *scsi_host; - int max_channel = 0; - u8 type; - int i; - size_t size; - u16 body_size = 6; - -#ifdef CONFIG_I2O_EXT_ADAPTEC - if (c->adaptec) - body_size = 8; -#endif - - list_for_each_entry(i2o_dev, &c->devices, list) - if (i2o_dev->lct_data.class_id == I2O_CLASS_BUS_ADAPTER) { - if (!i2o_parm_field_get(i2o_dev, 0x0000, 0, &type, 1) - && (type == 0x01)) /* SCSI bus */ - max_channel++; - } - - if (!max_channel) { - osm_warn("no channels found on %s\n", c->name); - return ERR_PTR(-EFAULT); - } - - size = max_channel * sizeof(struct i2o_device *) - + sizeof(struct i2o_scsi_host); - - scsi_host = scsi_host_alloc(&i2o_scsi_host_template, size); - if (!scsi_host) { - osm_warn("Could not allocate SCSI host\n"); - return ERR_PTR(-ENOMEM); - } - - scsi_host->max_channel = max_channel - 1; - scsi_host->max_id = i2o_scsi_max_id; - scsi_host->max_lun = i2o_scsi_max_lun; - scsi_host->this_id = c->unit; - scsi_host->sg_tablesize = i2o_sg_tablesize(c, body_size); - - i2o_shost = (struct i2o_scsi_host *)scsi_host->hostdata; - i2o_shost->scsi_host = scsi_host; - i2o_shost->iop = c; - i2o_shost->lun = 1; - - i = 0; - list_for_each_entry(i2o_dev, &c->devices, list) - if (i2o_dev->lct_data.class_id == I2O_CLASS_BUS_ADAPTER) { - if (!i2o_parm_field_get(i2o_dev, 0x0000, 0, &type, 1) - && (type == 0x01)) /* only SCSI bus */ - i2o_shost->channel[i++] = i2o_dev; - - if (i >= max_channel) - break; - } - - return i2o_shost; -}; - -/** - * i2o_scsi_get_host - Get an I2O SCSI host - * @c: I2O controller to for which to get the SCSI host - * - * If the I2O controller already exists as SCSI host, the SCSI host - * is returned, otherwise the I2O controller is added to the SCSI - * core. - * - * Returns pointer to the I2O SCSI host on success or NULL on failure. - */ -static struct i2o_scsi_host *i2o_scsi_get_host(struct i2o_controller *c) -{ - return c->driver_data[i2o_scsi_driver.context]; -}; - -/** - * i2o_scsi_remove - Remove I2O device from SCSI core - * @dev: device which should be removed - * - * Removes the I2O device from the SCSI core again. - * - * Returns 0 on success. - */ -static int i2o_scsi_remove(struct device *dev) -{ - struct i2o_device *i2o_dev = to_i2o_device(dev); - struct i2o_controller *c = i2o_dev->iop; - struct i2o_scsi_host *i2o_shost; - struct scsi_device *scsi_dev; - - osm_info("device removed (TID: %03x)\n", i2o_dev->lct_data.tid); - - i2o_shost = i2o_scsi_get_host(c); - - shost_for_each_device(scsi_dev, i2o_shost->scsi_host) - if (scsi_dev->hostdata == i2o_dev) { - sysfs_remove_link(&i2o_dev->device.kobj, "scsi"); - scsi_remove_device(scsi_dev); - scsi_device_put(scsi_dev); - break; - } - - return 0; -}; - -/** - * i2o_scsi_probe - verify if dev is a I2O SCSI device and install it - * @dev: device to verify if it is a I2O SCSI device - * - * Retrieve channel, id and lun for I2O device. If everything goes well - * register the I2O device as SCSI device on the I2O SCSI controller. - * - * Returns 0 on success or negative error code on failure. - */ -static int i2o_scsi_probe(struct device *dev) -{ - struct i2o_device *i2o_dev = to_i2o_device(dev); - struct i2o_controller *c = i2o_dev->iop; - struct i2o_scsi_host *i2o_shost; - struct Scsi_Host *scsi_host; - struct i2o_device *parent; - struct scsi_device *scsi_dev; - u32 id = -1; - u64 lun = -1; - int channel = -1; - int i, rc; - - i2o_shost = i2o_scsi_get_host(c); - if (!i2o_shost) - return -EFAULT; - - scsi_host = i2o_shost->scsi_host; - - switch (i2o_dev->lct_data.class_id) { - case I2O_CLASS_RANDOM_BLOCK_STORAGE: - case I2O_CLASS_EXECUTIVE: -#ifdef CONFIG_I2O_EXT_ADAPTEC - if (c->adaptec) { - u8 type; - struct i2o_device *d = i2o_shost->channel[0]; - - if (!i2o_parm_field_get(d, 0x0000, 0, &type, 1) - && (type == 0x01)) /* SCSI bus */ - if (!i2o_parm_field_get(d, 0x0200, 4, &id, 4)) { - channel = 0; - if (i2o_dev->lct_data.class_id == - I2O_CLASS_RANDOM_BLOCK_STORAGE) - lun = - cpu_to_le64(i2o_shost-> - lun++); - else - lun = 0; - } - } -#endif - break; - - case I2O_CLASS_SCSI_PERIPHERAL: - if (i2o_parm_field_get(i2o_dev, 0x0000, 3, &id, 4)) - return -EFAULT; - - if (i2o_parm_field_get(i2o_dev, 0x0000, 4, &lun, 8)) - return -EFAULT; - - parent = i2o_iop_find_device(c, i2o_dev->lct_data.parent_tid); - if (!parent) { - osm_warn("can not find parent of device %03x\n", - i2o_dev->lct_data.tid); - return -EFAULT; - } - - for (i = 0; i <= i2o_shost->scsi_host->max_channel; i++) - if (i2o_shost->channel[i] == parent) - channel = i; - break; - - default: - return -EFAULT; - } - - if (channel == -1) { - osm_warn("can not find channel of device %03x\n", - i2o_dev->lct_data.tid); - return -EFAULT; - } - - if (le32_to_cpu(id) >= scsi_host->max_id) { - osm_warn("SCSI device id (%d) >= max_id of I2O host (%d)", - le32_to_cpu(id), scsi_host->max_id); - return -EFAULT; - } - - if (le64_to_cpu(lun) >= scsi_host->max_lun) { - osm_warn("SCSI device lun (%llu) >= max_lun of I2O host (%llu)", - le64_to_cpu(lun), scsi_host->max_lun); - return -EFAULT; - } - - scsi_dev = - __scsi_add_device(i2o_shost->scsi_host, channel, le32_to_cpu(id), - le64_to_cpu(lun), i2o_dev); - - if (IS_ERR(scsi_dev)) { - osm_warn("can not add SCSI device %03x\n", - i2o_dev->lct_data.tid); - return PTR_ERR(scsi_dev); - } - - rc = sysfs_create_link(&i2o_dev->device.kobj, - &scsi_dev->sdev_gendev.kobj, "scsi"); - if (rc) - goto err; - - osm_info("device added (TID: %03x) channel: %d, id: %d, lun: %llu\n", - i2o_dev->lct_data.tid, channel, le32_to_cpu(id), - le64_to_cpu(lun)); - - return 0; - -err: - scsi_remove_device(scsi_dev); - return rc; -}; - -static const char *i2o_scsi_info(struct Scsi_Host *SChost) -{ - struct i2o_scsi_host *hostdata; - hostdata = (struct i2o_scsi_host *)SChost->hostdata; - return hostdata->iop->name; -} - -/** - * i2o_scsi_reply - SCSI OSM message reply handler - * @c: controller issuing the reply - * @m: message id for flushing - * @msg: the message from the controller - * - * Process reply messages (interrupts in normal scsi controller think). - * We can get a variety of messages to process. The normal path is - * scsi command completions. We must also deal with IOP failures, - * the reply to a bus reset and the reply to a LUN query. - * - * Returns 0 on success and if the reply should not be flushed or > 0 - * on success and if the reply should be flushed. Returns negative error - * code on failure and if the reply should be flushed. - */ -static int i2o_scsi_reply(struct i2o_controller *c, u32 m, - struct i2o_message *msg) -{ - struct scsi_cmnd *cmd; - u32 error; - struct device *dev; - - cmd = i2o_cntxt_list_get(c, le32_to_cpu(msg->u.s.tcntxt)); - if (unlikely(!cmd)) { - osm_err("NULL reply received!\n"); - return -1; - } - - /* - * Low byte is device status, next is adapter status, - * (then one byte reserved), then request status. - */ - error = le32_to_cpu(msg->body[0]); - - osm_debug("Completed %0x%p\n", cmd); - - cmd->result = error & 0xff; - /* - * if DeviceStatus is not SCSI_SUCCESS copy over the sense data and let - * the SCSI layer handle the error - */ - if (cmd->result) - memcpy(cmd->sense_buffer, &msg->body[3], - min(SCSI_SENSE_BUFFERSIZE, 40)); - - /* only output error code if AdapterStatus is not HBA_SUCCESS */ - if ((error >> 8) & 0xff) - osm_err("SCSI error %08x\n", error); - - dev = &c->pdev->dev; - - scsi_dma_unmap(cmd); - - cmd->scsi_done(cmd); - - return 1; -}; - -/** - * i2o_scsi_notify_device_add - Retrieve notifications of added devices - * @i2o_dev: the I2O device which was added - * - * If a I2O device is added we catch the notification, because I2O classes - * other than SCSI peripheral will not be received through - * i2o_scsi_probe(). - */ -static void i2o_scsi_notify_device_add(struct i2o_device *i2o_dev) -{ - switch (i2o_dev->lct_data.class_id) { - case I2O_CLASS_EXECUTIVE: - case I2O_CLASS_RANDOM_BLOCK_STORAGE: - i2o_scsi_probe(&i2o_dev->device); - break; - - default: - break; - } -}; - -/** - * i2o_scsi_notify_device_remove - Retrieve notifications of removed devices - * @i2o_dev: the I2O device which was removed - * - * If a I2O device is removed, we catch the notification to remove the - * corresponding SCSI device. - */ -static void i2o_scsi_notify_device_remove(struct i2o_device *i2o_dev) -{ - switch (i2o_dev->lct_data.class_id) { - case I2O_CLASS_EXECUTIVE: - case I2O_CLASS_RANDOM_BLOCK_STORAGE: - i2o_scsi_remove(&i2o_dev->device); - break; - - default: - break; - } -}; - -/** - * i2o_scsi_notify_controller_add - Retrieve notifications of added controllers - * @c: the controller which was added - * - * If a I2O controller is added, we catch the notification to add a - * corresponding Scsi_Host. - */ -static void i2o_scsi_notify_controller_add(struct i2o_controller *c) -{ - struct i2o_scsi_host *i2o_shost; - int rc; - - i2o_shost = i2o_scsi_host_alloc(c); - if (IS_ERR(i2o_shost)) { - osm_err("Could not initialize SCSI host\n"); - return; - } - - rc = scsi_add_host(i2o_shost->scsi_host, &c->device); - if (rc) { - osm_err("Could not add SCSI host\n"); - scsi_host_put(i2o_shost->scsi_host); - return; - } - - c->driver_data[i2o_scsi_driver.context] = i2o_shost; - - osm_debug("new I2O SCSI host added\n"); -}; - -/** - * i2o_scsi_notify_controller_remove - Retrieve notifications of removed controllers - * @c: the controller which was removed - * - * If a I2O controller is removed, we catch the notification to remove the - * corresponding Scsi_Host. - */ -static void i2o_scsi_notify_controller_remove(struct i2o_controller *c) -{ - struct i2o_scsi_host *i2o_shost; - i2o_shost = i2o_scsi_get_host(c); - if (!i2o_shost) - return; - - c->driver_data[i2o_scsi_driver.context] = NULL; - - scsi_remove_host(i2o_shost->scsi_host); - scsi_host_put(i2o_shost->scsi_host); - osm_debug("I2O SCSI host removed\n"); -}; - -/* SCSI OSM driver struct */ -static struct i2o_driver i2o_scsi_driver = { - .name = OSM_NAME, - .reply = i2o_scsi_reply, - .classes = i2o_scsi_class_id, - .notify_device_add = i2o_scsi_notify_device_add, - .notify_device_remove = i2o_scsi_notify_device_remove, - .notify_controller_add = i2o_scsi_notify_controller_add, - .notify_controller_remove = i2o_scsi_notify_controller_remove, - .driver = { - .probe = i2o_scsi_probe, - .remove = i2o_scsi_remove, - }, -}; - -/** - * i2o_scsi_queuecommand - queue a SCSI command - * @SCpnt: scsi command pointer - * @done: callback for completion - * - * Issue a scsi command asynchronously. Return 0 on success or 1 if - * we hit an error (normally message queue congestion). The only - * minor complication here is that I2O deals with the device addressing - * so we have to map the bus/dev/lun back to an I2O handle as well - * as faking absent devices ourself. - * - * Locks: takes the controller lock on error path only - */ - -static int i2o_scsi_queuecommand_lck(struct scsi_cmnd *SCpnt, - void (*done) (struct scsi_cmnd *)) -{ - struct i2o_controller *c; - struct i2o_device *i2o_dev; - int tid; - struct i2o_message *msg; - /* - * ENABLE_DISCONNECT - * SIMPLE_TAG - * RETURN_SENSE_DATA_IN_REPLY_MESSAGE_FRAME - */ - u32 scsi_flags = 0x20a00000; - u32 sgl_offset; - u32 *mptr; - u32 cmd = I2O_CMD_SCSI_EXEC << 24; - int rc = 0; - - /* - * Do the incoming paperwork - */ - i2o_dev = SCpnt->device->hostdata; - - SCpnt->scsi_done = done; - - if (unlikely(!i2o_dev)) { - osm_warn("no I2O device in request\n"); - SCpnt->result = DID_NO_CONNECT << 16; - done(SCpnt); - goto exit; - } - c = i2o_dev->iop; - tid = i2o_dev->lct_data.tid; - - osm_debug("qcmd: Tid = %03x\n", tid); - osm_debug("Real scsi messages.\n"); - - /* - * Put together a scsi execscb message - */ - switch (SCpnt->sc_data_direction) { - case PCI_DMA_NONE: - /* DATA NO XFER */ - sgl_offset = SGL_OFFSET_0; - break; - - case PCI_DMA_TODEVICE: - /* DATA OUT (iop-->dev) */ - scsi_flags |= 0x80000000; - sgl_offset = SGL_OFFSET_10; - break; - - case PCI_DMA_FROMDEVICE: - /* DATA IN (iop<--dev) */ - scsi_flags |= 0x40000000; - sgl_offset = SGL_OFFSET_10; - break; - - default: - /* Unknown - kill the command */ - SCpnt->result = DID_NO_CONNECT << 16; - done(SCpnt); - goto exit; - } - - /* - * Obtain an I2O message. If there are none free then - * throw it back to the scsi layer - */ - - msg = i2o_msg_get(c); - if (IS_ERR(msg)) { - rc = SCSI_MLQUEUE_HOST_BUSY; - goto exit; - } - - mptr = &msg->body[0]; - -#if 0 /* this code can't work */ -#ifdef CONFIG_I2O_EXT_ADAPTEC - if (c->adaptec) { - u32 adpt_flags = 0; - - if (SCpnt->sc_request && SCpnt->sc_request->upper_private_data) { - i2o_sg_io_hdr_t __user *usr_ptr = - ((Sg_request *) (SCpnt->sc_request-> - upper_private_data))->header. - usr_ptr; - - if (usr_ptr) - get_user(adpt_flags, &usr_ptr->flags); - } - - switch (i2o_dev->lct_data.class_id) { - case I2O_CLASS_EXECUTIVE: - case I2O_CLASS_RANDOM_BLOCK_STORAGE: - /* interpret flag has to be set for executive */ - adpt_flags ^= I2O_DPT_SG_FLAG_INTERPRET; - break; - - default: - break; - } - - /* - * for Adaptec controllers we use the PRIVATE command, because - * the normal SCSI EXEC doesn't support all SCSI commands on - * all controllers (for example READ CAPACITY). - */ - if (sgl_offset == SGL_OFFSET_10) - sgl_offset = SGL_OFFSET_12; - cmd = I2O_CMD_PRIVATE << 24; - *mptr++ = cpu_to_le32(I2O_VENDOR_DPT << 16 | I2O_CMD_SCSI_EXEC); - *mptr++ = cpu_to_le32(adpt_flags | tid); - } -#endif -#endif - - msg->u.head[1] = cpu_to_le32(cmd | HOST_TID << 12 | tid); - msg->u.s.icntxt = cpu_to_le32(i2o_scsi_driver.context); - - /* We want the SCSI control block back */ - msg->u.s.tcntxt = cpu_to_le32(i2o_cntxt_list_add(c, SCpnt)); - - /* LSI_920_PCI_QUIRK - * - * Intermittant observations of msg frame word data corruption - * observed on msg[4] after: - * WRITE, READ-MODIFY-WRITE - * operations. 19990606 -sralston - * - * (Hence we build this word via tag. Its good practice anyway - * we don't want fetches over PCI needlessly) - */ - - /* Attach tags to the devices */ - /* FIXME: implement - if(SCpnt->device->tagged_supported) { - if(SCpnt->tag == HEAD_OF_QUEUE_TAG) - scsi_flags |= 0x01000000; - else if(SCpnt->tag == ORDERED_QUEUE_TAG) - scsi_flags |= 0x01800000; - } - */ - - *mptr++ = cpu_to_le32(scsi_flags | SCpnt->cmd_len); - - /* Write SCSI command into the message - always 16 byte block */ - memcpy(mptr, SCpnt->cmnd, 16); - mptr += 4; - - if (sgl_offset != SGL_OFFSET_0) { - /* write size of data addressed by SGL */ - *mptr++ = cpu_to_le32(scsi_bufflen(SCpnt)); - - /* Now fill in the SGList and command */ - - if (scsi_sg_count(SCpnt)) { - if (!i2o_dma_map_sg(c, scsi_sglist(SCpnt), - scsi_sg_count(SCpnt), - SCpnt->sc_data_direction, &mptr)) - goto nomem; - } - } - - /* Stick the headers on */ - msg->u.head[0] = - cpu_to_le32(I2O_MESSAGE_SIZE(mptr - &msg->u.head[0]) | sgl_offset); - - /* Queue the message */ - i2o_msg_post(c, msg); - - osm_debug("Issued %0x%p\n", SCpnt); - - return 0; - - nomem: - rc = -ENOMEM; - i2o_msg_nop(c, msg); - - exit: - return rc; -} - -static DEF_SCSI_QCMD(i2o_scsi_queuecommand) - -/** - * i2o_scsi_abort - abort a running command - * @SCpnt: command to abort - * - * Ask the I2O controller to abort a command. This is an asynchrnous - * process and our callback handler will see the command complete with an - * aborted message if it succeeds. - * - * Returns 0 if the command is successfully aborted or negative error code - * on failure. - */ -static int i2o_scsi_abort(struct scsi_cmnd *SCpnt) -{ - struct i2o_device *i2o_dev; - struct i2o_controller *c; - struct i2o_message *msg; - int tid; - int status = FAILED; - - osm_warn("Aborting command block.\n"); - - i2o_dev = SCpnt->device->hostdata; - c = i2o_dev->iop; - tid = i2o_dev->lct_data.tid; - - msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET); - if (IS_ERR(msg)) - return SCSI_MLQUEUE_HOST_BUSY; - - msg->u.head[0] = cpu_to_le32(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0); - msg->u.head[1] = - cpu_to_le32(I2O_CMD_SCSI_ABORT << 24 | HOST_TID << 12 | tid); - msg->body[0] = cpu_to_le32(i2o_cntxt_list_get_ptr(c, SCpnt)); - - if (!i2o_msg_post_wait(c, msg, I2O_TIMEOUT_SCSI_SCB_ABORT)) - status = SUCCESS; - - return status; -} - -/** - * i2o_scsi_bios_param - Invent disk geometry - * @sdev: scsi device - * @dev: block layer device - * @capacity: size in sectors - * @ip: geometry array - * - * This is anyone's guess quite frankly. We use the same rules everyone - * else appears to and hope. It seems to work. - */ - -static int i2o_scsi_bios_param(struct scsi_device *sdev, - struct block_device *dev, sector_t capacity, - int *ip) -{ - int size; - - size = capacity; - ip[0] = 64; /* heads */ - ip[1] = 32; /* sectors */ - if ((ip[2] = size >> 11) > 1024) { /* cylinders, test for big disk */ - ip[0] = 255; /* heads */ - ip[1] = 63; /* sectors */ - ip[2] = size / (255 * 63); /* cylinders */ - } - return 0; -} - -static struct scsi_host_template i2o_scsi_host_template = { - .proc_name = OSM_NAME, - .name = OSM_DESCRIPTION, - .info = i2o_scsi_info, - .queuecommand = i2o_scsi_queuecommand, - .eh_abort_handler = i2o_scsi_abort, - .bios_param = i2o_scsi_bios_param, - .can_queue = I2O_SCSI_CAN_QUEUE, - .sg_tablesize = 8, - .cmd_per_lun = 6, - .use_clustering = ENABLE_CLUSTERING, -}; - -/** - * i2o_scsi_init - SCSI OSM initialization function - * - * Register SCSI OSM into I2O core. - * - * Returns 0 on success or negative error code on failure. - */ -static int __init i2o_scsi_init(void) -{ - int rc; - - printk(KERN_INFO OSM_DESCRIPTION " v" OSM_VERSION "\n"); - - /* Register SCSI OSM into I2O core */ - rc = i2o_driver_register(&i2o_scsi_driver); - if (rc) { - osm_err("Could not register SCSI driver\n"); - return rc; - } - - return 0; -}; - -/** - * i2o_scsi_exit - SCSI OSM exit function - * - * Unregisters SCSI OSM from I2O core. - */ -static void __exit i2o_scsi_exit(void) -{ - /* Unregister I2O SCSI OSM from I2O core */ - i2o_driver_unregister(&i2o_scsi_driver); -}; - -MODULE_AUTHOR("Red Hat Software"); -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION(OSM_DESCRIPTION); -MODULE_VERSION(OSM_VERSION); - -module_init(i2o_scsi_init); -module_exit(i2o_scsi_exit); |