linit.c

linux-2.6.15.6

	if (!buf)
		return 0;
	if(*(__le16 *)(buf + 0x40) == cpu_to_le16(0xaa55)) {
		struct partition *first = (struct partition * )buf;
		struct partition *entry = first;
		int saved_cylinders = param->cylinders;
		int num;
		unsigned char end_head, end_sec;

		for(num = 0; num < 4; num++) {
			end_head = entry->end_head;
			end_sec = entry->end_sector & 0x3f;

			if(end_head == 63) {
				param->heads = 64;
				param->sectors = 32;
				break;
			} else if(end_head == 127) {
				param->heads = 128;
				param->sectors = 32;
				break;
			} else if(end_head == 254) {
				param->heads = 255;
				param->sectors = 63;
				break;
			}
			entry++;
		}

		if (num == 4) {
			end_head = first->end_head;
			end_sec = first->end_sector & 0x3f;
		}

		param->cylinders = cap_to_cyls(capacity, param->heads * param->sectors);
		if (num < 4 && end_sec == param->sectors) {
			if (param->cylinders != saved_cylinders)
				dprintk((KERN_DEBUG "Adopting geometry: heads=%d, sectors=%d from partition table %d.\n",
					param->heads, param->sectors, num));
		} else if (end_head > 0 || end_sec > 0) {
			dprintk((KERN_DEBUG "Strange geometry: heads=%d, sectors=%d in partition table %d.\n",
				end_head + 1, end_sec, num));
			dprintk((KERN_DEBUG "Using geometry: heads=%d, sectors=%d.\n",
					param->heads, param->sectors));
		}
	}
	kfree(buf);
	return 0;
}

/**
 *	aac_slave_configure		-	compute queue depths
 *	@sdev:	SCSI device we are considering
 *
 *	Selects queue depths for each target device based on the host adapter's
 *	total capacity and the queue depth supported by the target device.
 *	A queue depth of one automatically disables tagged queueing.
 */

static int aac_slave_configure(struct scsi_device *sdev)
{
	struct Scsi_Host *host = sdev->host;

	if (sdev->tagged_supported)
		scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, 128);
	else
		scsi_adjust_queue_depth(sdev, 0, 1);

	if (!(((struct aac_dev *)host->hostdata)->adapter_info.options
	  & AAC_OPT_NEW_COMM))
		blk_queue_max_segment_size(sdev->request_queue, 65536);

	return 0;
}

static int aac_ioctl(struct scsi_device *sdev, int cmd, void __user * arg)
{
	struct aac_dev *dev = (struct aac_dev *)sdev->host->hostdata;
	return aac_do_ioctl(dev, cmd, arg);
}

/*
 *	aac_eh_reset	- Reset command handling
 *	@scsi_cmd:	SCSI command block causing the reset
 *
 */
static int aac_eh_reset(struct scsi_cmnd* cmd)
{
	struct scsi_device * dev = cmd->device;
	struct Scsi_Host * host = dev->host;
	struct scsi_cmnd * command;
	int count;
	struct aac_dev * aac;
	unsigned long flags;

	printk(KERN_ERR "%s: Host adapter reset request. SCSI hang ?\n", 
					AAC_DRIVERNAME);


	spin_lock_irq(host->host_lock);

	aac = (struct aac_dev *)host->hostdata;
	if (aac_adapter_check_health(aac)) {
		printk(KERN_ERR "%s: Host adapter appears dead\n", 
				AAC_DRIVERNAME);
		spin_unlock_irq(host->host_lock);
		return -ENODEV;
	}
	/*
	 * Wait for all commands to complete to this specific
	 * target (block maximum 60 seconds).
	 */
	for (count = 60; count; --count) {
		int active = 0;
		__shost_for_each_device(dev, host) {
			spin_lock_irqsave(&dev->list_lock, flags);
			list_for_each_entry(command, &dev->cmd_list, list) {
				if (command->serial_number) {
					active++;
					break;
				}
			}
			spin_unlock_irqrestore(&dev->list_lock, flags);
			if (active)
				break;

		}
		/*
		 * We can exit If all the commands are complete
		 */
		spin_unlock_irq(host->host_lock);
		if (active == 0)
			return SUCCESS;
		ssleep(1);
		spin_lock_irq(host->host_lock);
	}
	spin_unlock_irq(host->host_lock);
	printk(KERN_ERR "%s: SCSI bus appears hung\n", AAC_DRIVERNAME);
	return -ETIMEDOUT;
}

/**
 *	aac_cfg_open		-	open a configuration file
 *	@inode: inode being opened
 *	@file: file handle attached
 *
 *	Called when the configuration device is opened. Does the needed
 *	set up on the handle and then returns
 *
 *	Bugs: This needs extending to check a given adapter is present
 *	so we can support hot plugging, and to ref count adapters.
 */

static int aac_cfg_open(struct inode *inode, struct file *file)
{
	struct aac_dev *aac;
	unsigned minor_number = iminor(inode);
	int err = -ENODEV;

	list_for_each_entry(aac, &aac_devices, entry) {
		if (aac->id == minor_number) {
			file->private_data = aac;
			err = 0;
			break;
		}
	}

	return err;
}

/**
 *	aac_cfg_ioctl		-	AAC configuration request
 *	@inode: inode of device
 *	@file: file handle
 *	@cmd: ioctl command code
 *	@arg: argument
 *
 *	Handles a configuration ioctl. Currently this involves wrapping it
 *	up and feeding it into the nasty windowsalike glue layer.
 *
 *	Bugs: Needs locking against parallel ioctls lower down
 *	Bugs: Needs to handle hot plugging
 */
 
static int aac_cfg_ioctl(struct inode *inode,  struct file *file,
		unsigned int cmd, unsigned long arg)
{
	return aac_do_ioctl(file->private_data, cmd, (void __user *)arg);
}

#ifdef CONFIG_COMPAT
static long aac_compat_do_ioctl(struct aac_dev *dev, unsigned cmd, unsigned long arg)
{
	long ret;
	lock_kernel();
	switch (cmd) { 
	case FSACTL_MINIPORT_REV_CHECK:
	case FSACTL_SENDFIB:
	case FSACTL_OPEN_GET_ADAPTER_FIB:
	case FSACTL_CLOSE_GET_ADAPTER_FIB:
	case FSACTL_SEND_RAW_SRB:
	case FSACTL_GET_PCI_INFO:
	case FSACTL_QUERY_DISK:
	case FSACTL_DELETE_DISK:
	case FSACTL_FORCE_DELETE_DISK:
	case FSACTL_GET_CONTAINERS: 
	case FSACTL_SEND_LARGE_FIB:
		ret = aac_do_ioctl(dev, cmd, (void __user *)arg);
		break;

	case FSACTL_GET_NEXT_ADAPTER_FIB: {
		struct fib_ioctl __user *f;
		
		f = compat_alloc_user_space(sizeof(*f));
		ret = 0;
		if (clear_user(f, sizeof(*f) != sizeof(*f)))
			ret = -EFAULT;
		if (copy_in_user(f, (void __user *)arg, sizeof(struct fib_ioctl) - sizeof(u32)))
			ret = -EFAULT;
		if (!ret)
			ret = aac_do_ioctl(dev, cmd, (void __user *)arg);
		break;
	}

	default:
		ret = -ENOIOCTLCMD; 
		break;
	} 
	unlock_kernel();
	return ret;
}

static int aac_compat_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
{
	struct aac_dev *dev = (struct aac_dev *)sdev->host->hostdata;
	return aac_compat_do_ioctl(dev, cmd, (unsigned long)arg);
}

static long aac_compat_cfg_ioctl(struct file *file, unsigned cmd, unsigned long arg)
{
	return aac_compat_do_ioctl((struct aac_dev *)file->private_data, cmd, arg);
}
#endif

static ssize_t aac_show_model(struct class_device *class_dev,
		char *buf)
{
	struct aac_dev *dev = (struct aac_dev*)class_to_shost(class_dev)->hostdata;
	int len;

	len = snprintf(buf, PAGE_SIZE, "%s\n",
		  aac_drivers[dev->cardtype].model);
	return len;
}

static ssize_t aac_show_vendor(struct class_device *class_dev,
		char *buf)
{
	struct aac_dev *dev = (struct aac_dev*)class_to_shost(class_dev)->hostdata;
	int len;

	len = snprintf(buf, PAGE_SIZE, "%s\n",
		  aac_drivers[dev->cardtype].vname);
	return len;
}

static ssize_t aac_show_kernel_version(struct class_device *class_dev,
		char *buf)
{
	struct aac_dev *dev = (struct aac_dev*)class_to_shost(class_dev)->hostdata;
	int len, tmp;

	tmp = le32_to_cpu(dev->adapter_info.kernelrev);
	len = snprintf(buf, PAGE_SIZE, "%d.%d-%d[%d]\n", 
	  tmp >> 24, (tmp >> 16) & 0xff, tmp & 0xff,
	  le32_to_cpu(dev->adapter_info.kernelbuild));
	return len;
}

static ssize_t aac_show_monitor_version(struct class_device *class_dev,
		char *buf)
{
	struct aac_dev *dev = (struct aac_dev*)class_to_shost(class_dev)->hostdata;
	int len, tmp;

	tmp = le32_to_cpu(dev->adapter_info.monitorrev);
	len = snprintf(buf, PAGE_SIZE, "%d.%d-%d[%d]\n", 
	  tmp >> 24, (tmp >> 16) & 0xff, tmp & 0xff,
	  le32_to_cpu(dev->adapter_info.monitorbuild));
	return len;
}

static ssize_t aac_show_bios_version(struct class_device *class_dev,
		char *buf)
{
	struct aac_dev *dev = (struct aac_dev*)class_to_shost(class_dev)->hostdata;
	int len, tmp;

	tmp = le32_to_cpu(dev->adapter_info.biosrev);
	len = snprintf(buf, PAGE_SIZE, "%d.%d-%d[%d]\n", 
	  tmp >> 24, (tmp >> 16) & 0xff, tmp & 0xff,
	  le32_to_cpu(dev->adapter_info.biosbuild));
	return len;
}

static ssize_t aac_show_serial_number(struct class_device *class_dev,
		char *buf)
{
	struct aac_dev *dev = (struct aac_dev*)class_to_shost(class_dev)->hostdata;
	int len = 0;

	if (le32_to_cpu(dev->adapter_info.serial[0]) != 0xBAD0)
		len = snprintf(buf, PAGE_SIZE, "%x\n",
		  le32_to_cpu(dev->adapter_info.serial[0]));
	return len;
}


static struct class_device_attribute aac_model = {
	.attr = {
		.name = "model",
		.mode = S_IRUGO,
	},
	.show = aac_show_model,
};
static struct class_device_attribute aac_vendor = {
	.attr = {