qla_attr.c

来自「linux 内核源代码」· C语言 代码 · 共 1,253 行 · 第 1/3 页

qla2x00_sysfs_read_sfp(struct kobject *kobj,
		       struct bin_attribute *bin_attr,
		       char *buf, loff_t off, size_t count)
{
	struct scsi_qla_host *ha = shost_priv(dev_to_shost(container_of(kobj,
	    struct device, kobj)));
	uint16_t iter, addr, offset;
	int rval;

	if (!capable(CAP_SYS_ADMIN) || off != 0 || count != SFP_DEV_SIZE * 2)
		return 0;

	addr = 0xa0;
	for (iter = 0, offset = 0; iter < (SFP_DEV_SIZE * 2) / SFP_BLOCK_SIZE;
	    iter++, offset += SFP_BLOCK_SIZE) {
		if (iter == 4) {
			/* Skip to next device address. */
			addr = 0xa2;
			offset = 0;
		}

		rval = qla2x00_read_sfp(ha, ha->sfp_data_dma, addr, offset,
		    SFP_BLOCK_SIZE);
		if (rval != QLA_SUCCESS) {
			qla_printk(KERN_WARNING, ha,
			    "Unable to read SFP data (%x/%x/%x).\n", rval,
			    addr, offset);
			count = 0;
			break;
		}
		memcpy(buf, ha->sfp_data, SFP_BLOCK_SIZE);
		buf += SFP_BLOCK_SIZE;
	}

	return count;
}

static struct bin_attribute sysfs_sfp_attr = {
	.attr = {
		.name = "sfp",
		.mode = S_IRUSR | S_IWUSR,
	},
	.size = SFP_DEV_SIZE * 2,
	.read = qla2x00_sysfs_read_sfp,
};

static struct sysfs_entry {
	char *name;
	struct bin_attribute *attr;
	int is4GBp_only;
} bin_file_entries[] = {
	{ "fw_dump", &sysfs_fw_dump_attr, },
	{ "nvram", &sysfs_nvram_attr, },
	{ "optrom", &sysfs_optrom_attr, },
	{ "optrom_ctl", &sysfs_optrom_ctl_attr, },
	{ "vpd", &sysfs_vpd_attr, 1 },
	{ "sfp", &sysfs_sfp_attr, 1 },
	{ NULL },
};

void
qla2x00_alloc_sysfs_attr(scsi_qla_host_t *ha)
{
	struct Scsi_Host *host = ha->host;
	struct sysfs_entry *iter;
	int ret;

	for (iter = bin_file_entries; iter->name; iter++) {
		if (iter->is4GBp_only && !IS_FWI2_CAPABLE(ha))
			continue;

		ret = sysfs_create_bin_file(&host->shost_gendev.kobj,
		    iter->attr);
		if (ret)
			qla_printk(KERN_INFO, ha,
			    "Unable to create sysfs %s binary attribute "
			    "(%d).\n", iter->name, ret);
	}
}

void
qla2x00_free_sysfs_attr(scsi_qla_host_t *ha)
{
	struct Scsi_Host *host = ha->host;
	struct sysfs_entry *iter;

	for (iter = bin_file_entries; iter->name; iter++) {
		if (iter->is4GBp_only && !IS_FWI2_CAPABLE(ha))
			continue;

		sysfs_remove_bin_file(&host->shost_gendev.kobj,
		    iter->attr);
	}

	if (ha->beacon_blink_led == 1)
		ha->isp_ops->beacon_off(ha);
}

/* Scsi_Host attributes. */

static ssize_t
qla2x00_drvr_version_show(struct class_device *cdev, char *buf)
{
	return snprintf(buf, PAGE_SIZE, "%s\n", qla2x00_version_str);
}

static ssize_t
qla2x00_fw_version_show(struct class_device *cdev, char *buf)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));
	char fw_str[30];

	return snprintf(buf, PAGE_SIZE, "%s\n",
	    ha->isp_ops->fw_version_str(ha, fw_str));
}

static ssize_t
qla2x00_serial_num_show(struct class_device *cdev, char *buf)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));
	uint32_t sn;

	if (IS_FWI2_CAPABLE(ha))
		return snprintf(buf, PAGE_SIZE, "\n");

	sn = ((ha->serial0 & 0x1f) << 16) | (ha->serial2 << 8) | ha->serial1;
	return snprintf(buf, PAGE_SIZE, "%c%05d\n", 'A' + sn / 100000,
	    sn % 100000);
}

static ssize_t
qla2x00_isp_name_show(struct class_device *cdev, char *buf)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));
	return snprintf(buf, PAGE_SIZE, "ISP%04X\n", ha->pdev->device);
}

static ssize_t
qla2x00_isp_id_show(struct class_device *cdev, char *buf)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));
	return snprintf(buf, PAGE_SIZE, "%04x %04x %04x %04x\n",
	    ha->product_id[0], ha->product_id[1], ha->product_id[2],
	    ha->product_id[3]);
}

static ssize_t
qla2x00_model_name_show(struct class_device *cdev, char *buf)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));
	return snprintf(buf, PAGE_SIZE, "%s\n", ha->model_number);
}

static ssize_t
qla2x00_model_desc_show(struct class_device *cdev, char *buf)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));
	return snprintf(buf, PAGE_SIZE, "%s\n",
	    ha->model_desc ? ha->model_desc: "");
}

static ssize_t
qla2x00_pci_info_show(struct class_device *cdev, char *buf)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));
	char pci_info[30];

	return snprintf(buf, PAGE_SIZE, "%s\n",
	    ha->isp_ops->pci_info_str(ha, pci_info));
}

static ssize_t
qla2x00_state_show(struct class_device *cdev, char *buf)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));
	int len = 0;

	if (atomic_read(&ha->loop_state) == LOOP_DOWN ||
	    atomic_read(&ha->loop_state) == LOOP_DEAD)
		len = snprintf(buf, PAGE_SIZE, "Link Down\n");
	else if (atomic_read(&ha->loop_state) != LOOP_READY ||
	    test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
	    test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags))
		len = snprintf(buf, PAGE_SIZE, "Unknown Link State\n");
	else {
		len = snprintf(buf, PAGE_SIZE, "Link Up - ");

		switch (ha->current_topology) {
		case ISP_CFG_NL:
			len += snprintf(buf + len, PAGE_SIZE-len, "Loop\n");
			break;
		case ISP_CFG_FL:
			len += snprintf(buf + len, PAGE_SIZE-len, "FL_Port\n");
			break;
		case ISP_CFG_N:
			len += snprintf(buf + len, PAGE_SIZE-len,
			    "N_Port to N_Port\n");
			break;
		case ISP_CFG_F:
			len += snprintf(buf + len, PAGE_SIZE-len, "F_Port\n");
			break;
		default:
			len += snprintf(buf + len, PAGE_SIZE-len, "Loop\n");
			break;
		}
	}
	return len;
}

static ssize_t
qla2x00_zio_show(struct class_device *cdev, char *buf)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));
	int len = 0;

	switch (ha->zio_mode) {
	case QLA_ZIO_MODE_6:
		len += snprintf(buf + len, PAGE_SIZE-len, "Mode 6\n");
		break;
	case QLA_ZIO_DISABLED:
		len += snprintf(buf + len, PAGE_SIZE-len, "Disabled\n");
		break;
	}
	return len;
}

static ssize_t
qla2x00_zio_store(struct class_device *cdev, const char *buf, size_t count)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));
	int val = 0;
	uint16_t zio_mode;

	if (!IS_ZIO_SUPPORTED(ha))
		return -ENOTSUPP;

	if (sscanf(buf, "%d", &val) != 1)
		return -EINVAL;

	if (val)
		zio_mode = QLA_ZIO_MODE_6;
	else
		zio_mode = QLA_ZIO_DISABLED;

	/* Update per-hba values and queue a reset. */
	if (zio_mode != QLA_ZIO_DISABLED || ha->zio_mode != QLA_ZIO_DISABLED) {
		ha->zio_mode = zio_mode;
		set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
	}
	return strlen(buf);
}

static ssize_t
qla2x00_zio_timer_show(struct class_device *cdev, char *buf)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));

	return snprintf(buf, PAGE_SIZE, "%d us\n", ha->zio_timer * 100);
}

static ssize_t
qla2x00_zio_timer_store(struct class_device *cdev, const char *buf,
    size_t count)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));
	int val = 0;
	uint16_t zio_timer;

	if (sscanf(buf, "%d", &val) != 1)
		return -EINVAL;
	if (val > 25500 || val < 100)
		return -ERANGE;

	zio_timer = (uint16_t)(val / 100);
	ha->zio_timer = zio_timer;

	return strlen(buf);
}

static ssize_t
qla2x00_beacon_show(struct class_device *cdev, char *buf)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));
	int len = 0;

	if (ha->beacon_blink_led)
		len += snprintf(buf + len, PAGE_SIZE-len, "Enabled\n");
	else
		len += snprintf(buf + len, PAGE_SIZE-len, "Disabled\n");
	return len;
}

static ssize_t
qla2x00_beacon_store(struct class_device *cdev, const char *buf,
    size_t count)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));
	int val = 0;
	int rval;

	if (IS_QLA2100(ha) || IS_QLA2200(ha))
		return -EPERM;

	if (test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) {
		qla_printk(KERN_WARNING, ha,
		    "Abort ISP active -- ignoring beacon request.\n");
		return -EBUSY;
	}

	if (sscanf(buf, "%d", &val) != 1)
		return -EINVAL;

	if (val)
		rval = ha->isp_ops->beacon_on(ha);
	else
		rval = ha->isp_ops->beacon_off(ha);

	if (rval != QLA_SUCCESS)
		count = 0;

	return count;
}

static ssize_t
qla2x00_optrom_bios_version_show(struct class_device *cdev, char *buf)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));

	return snprintf(buf, PAGE_SIZE, "%d.%02d\n", ha->bios_revision[1],
	    ha->bios_revision[0]);
}

static ssize_t
qla2x00_optrom_efi_version_show(struct class_device *cdev, char *buf)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));

	return snprintf(buf, PAGE_SIZE, "%d.%02d\n", ha->efi_revision[1],
	    ha->efi_revision[0]);
}

static ssize_t
qla2x00_optrom_fcode_version_show(struct class_device *cdev, char *buf)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));

	return snprintf(buf, PAGE_SIZE, "%d.%02d\n", ha->fcode_revision[1],
	    ha->fcode_revision[0]);
}

static ssize_t
qla2x00_optrom_fw_version_show(struct class_device *cdev, char *buf)
{
	scsi_qla_host_t *ha = shost_priv(class_to_shost(cdev));

	return snprintf(buf, PAGE_SIZE, "%d.%02d.%02d %d\n",
	    ha->fw_revision[0], ha->fw_revision[1], ha->fw_revision[2],
	    ha->fw_revision[3]);
}

static CLASS_DEVICE_ATTR(driver_version, S_IRUGO, qla2x00_drvr_version_show,
	NULL);
static CLASS_DEVICE_ATTR(fw_version, S_IRUGO, qla2x00_fw_version_show, NULL);
static CLASS_DEVICE_ATTR(serial_num, S_IRUGO, qla2x00_serial_num_show, NULL);
static CLASS_DEVICE_ATTR(isp_name, S_IRUGO, qla2x00_isp_name_show, NULL);
static CLASS_DEVICE_ATTR(isp_id, S_IRUGO, qla2x00_isp_id_show, NULL);
static CLASS_DEVICE_ATTR(model_name, S_IRUGO, qla2x00_model_name_show, NULL);
static CLASS_DEVICE_ATTR(model_desc, S_IRUGO, qla2x00_model_desc_show, NULL);
static CLASS_DEVICE_ATTR(pci_info, S_IRUGO, qla2x00_pci_info_show, NULL);
static CLASS_DEVICE_ATTR(state, S_IRUGO, qla2x00_state_show, NULL);
static CLASS_DEVICE_ATTR(zio, S_IRUGO | S_IWUSR, qla2x00_zio_show,
    qla2x00_zio_store);
static CLASS_DEVICE_ATTR(zio_timer, S_IRUGO | S_IWUSR, qla2x00_zio_timer_show,
    qla2x00_zio_timer_store);
static CLASS_DEVICE_ATTR(beacon, S_IRUGO | S_IWUSR, qla2x00_beacon_show,
    qla2x00_beacon_store);
static CLASS_DEVICE_ATTR(optrom_bios_version, S_IRUGO,
    qla2x00_optrom_bios_version_show, NULL);
static CLASS_DEVICE_ATTR(optrom_efi_version, S_IRUGO,
    qla2x00_optrom_efi_version_show, NULL);
static CLASS_DEVICE_ATTR(optrom_fcode_version, S_IRUGO,
    qla2x00_optrom_fcode_version_show, NULL);
static CLASS_DEVICE_ATTR(optrom_fw_version, S_IRUGO,
    qla2x00_optrom_fw_version_show, NULL);

struct class_device_attribute *qla2x00_host_attrs[] = {
	&class_device_attr_driver_version,
	&class_device_attr_fw_version,
	&class_device_attr_serial_num,
	&class_device_attr_isp_name,
	&class_device_attr_isp_id,
	&class_device_attr_model_name,
	&class_device_attr_model_desc,
	&class_device_attr_pci_info,
	&class_device_attr_state,
	&class_device_attr_zio,
	&class_device_attr_zio_timer,
	&class_device_attr_beacon,
	&class_device_attr_optrom_bios_version,
	&class_device_attr_optrom_efi_version,
	&class_device_attr_optrom_fcode_version,
	&class_device_attr_optrom_fw_version,
	NULL,
};

/* Host attributes. */

static void
qla2x00_get_host_port_id(struct Scsi_Host *shost)
{
	scsi_qla_host_t *ha = shost_priv(shost);

	fc_host_port_id(shost) = ha->d_id.b.domain << 16 |
	    ha->d_id.b.area << 8 | ha->d_id.b.al_pa;
}

static void
qla2x00_get_host_speed(struct Scsi_Host *shost)