ahci: EM supported message type sysfs attribute
This patch adds an sysfs attribute 'em_message_supported' to the ahci host device which prints out the supported enclosure management message types. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
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@ -229,6 +229,10 @@ enum {
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EM_CTL_ALHD = (1 << 26), /* Activity LED */
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EM_CTL_ALHD = (1 << 26), /* Activity LED */
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EM_CTL_XMT = (1 << 25), /* Transmit Only */
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EM_CTL_XMT = (1 << 25), /* Transmit Only */
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EM_CTL_SMB = (1 << 24), /* Single Message Buffer */
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EM_CTL_SMB = (1 << 24), /* Single Message Buffer */
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EM_CTL_SGPIO = (1 << 19), /* SGPIO messages supported */
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EM_CTL_SES = (1 << 18), /* SES-2 messages supported */
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EM_CTL_SAFTE = (1 << 17), /* SAF-TE messages supported */
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EM_CTL_LED = (1 << 16), /* LED messages supported */
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/* em message type */
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/* em message type */
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EM_MSG_TYPE_LED = (1 << 0), /* LED */
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EM_MSG_TYPE_LED = (1 << 0), /* LED */
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@ -109,6 +109,8 @@ static ssize_t ahci_read_em_buffer(struct device *dev,
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static ssize_t ahci_store_em_buffer(struct device *dev,
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static ssize_t ahci_store_em_buffer(struct device *dev,
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struct device_attribute *attr,
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struct device_attribute *attr,
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const char *buf, size_t size);
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const char *buf, size_t size);
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static ssize_t ahci_show_em_supported(struct device *dev,
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struct device_attribute *attr, char *buf);
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static DEVICE_ATTR(ahci_host_caps, S_IRUGO, ahci_show_host_caps, NULL);
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static DEVICE_ATTR(ahci_host_caps, S_IRUGO, ahci_show_host_caps, NULL);
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static DEVICE_ATTR(ahci_host_cap2, S_IRUGO, ahci_show_host_cap2, NULL);
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static DEVICE_ATTR(ahci_host_cap2, S_IRUGO, ahci_show_host_cap2, NULL);
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@ -116,6 +118,7 @@ static DEVICE_ATTR(ahci_host_version, S_IRUGO, ahci_show_host_version, NULL);
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static DEVICE_ATTR(ahci_port_cmd, S_IRUGO, ahci_show_port_cmd, NULL);
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static DEVICE_ATTR(ahci_port_cmd, S_IRUGO, ahci_show_port_cmd, NULL);
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static DEVICE_ATTR(em_buffer, S_IWUSR | S_IRUGO,
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static DEVICE_ATTR(em_buffer, S_IWUSR | S_IRUGO,
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ahci_read_em_buffer, ahci_store_em_buffer);
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ahci_read_em_buffer, ahci_store_em_buffer);
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static DEVICE_ATTR(em_message_supported, S_IRUGO, ahci_show_em_supported, NULL);
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struct device_attribute *ahci_shost_attrs[] = {
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struct device_attribute *ahci_shost_attrs[] = {
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&dev_attr_link_power_management_policy,
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&dev_attr_link_power_management_policy,
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@ -126,6 +129,7 @@ struct device_attribute *ahci_shost_attrs[] = {
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&dev_attr_ahci_host_version,
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&dev_attr_ahci_host_version,
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&dev_attr_ahci_port_cmd,
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&dev_attr_ahci_port_cmd,
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&dev_attr_em_buffer,
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&dev_attr_em_buffer,
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&dev_attr_em_message_supported,
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NULL
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NULL
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};
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};
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EXPORT_SYMBOL_GPL(ahci_shost_attrs);
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EXPORT_SYMBOL_GPL(ahci_shost_attrs);
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@ -343,6 +347,24 @@ static ssize_t ahci_store_em_buffer(struct device *dev,
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return size;
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return size;
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}
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}
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static ssize_t ahci_show_em_supported(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct Scsi_Host *shost = class_to_shost(dev);
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struct ata_port *ap = ata_shost_to_port(shost);
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struct ahci_host_priv *hpriv = ap->host->private_data;
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void __iomem *mmio = hpriv->mmio;
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u32 em_ctl;
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em_ctl = readl(mmio + HOST_EM_CTL);
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return sprintf(buf, "%s%s%s%s\n",
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em_ctl & EM_CTL_LED ? "led " : "",
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em_ctl & EM_CTL_SAFTE ? "saf-te " : "",
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em_ctl & EM_CTL_SES ? "ses-2 " : "",
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em_ctl & EM_CTL_SGPIO ? "sgpio " : "");
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}
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/**
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/**
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* ahci_save_initial_config - Save and fixup initial config values
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* ahci_save_initial_config - Save and fixup initial config values
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* @dev: target AHCI device
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* @dev: target AHCI device
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