diff options
Diffstat (limited to 'drivers/ata/ahci.c')
| -rw-r--r-- | drivers/ata/ahci.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 7a3124a9abc..be4c39f8ab8 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -329,10 +329,24 @@ static ssize_t ahci_activity_store(struct ata_device *dev, enum sw_activity val); static void ahci_init_sw_activity(struct ata_link *link); +static ssize_t ahci_show_host_caps(struct device *dev, + struct device_attribute *attr, char *buf); +static ssize_t ahci_show_host_version(struct device *dev, + struct device_attribute *attr, char *buf); +static ssize_t ahci_show_port_cmd(struct device *dev, + struct device_attribute *attr, char *buf); + +DEVICE_ATTR(ahci_host_caps, S_IRUGO, ahci_show_host_caps, NULL); +DEVICE_ATTR(ahci_host_version, S_IRUGO, ahci_show_host_version, NULL); +DEVICE_ATTR(ahci_port_cmd, S_IRUGO, ahci_show_port_cmd, NULL); + static struct device_attribute *ahci_shost_attrs[] = { &dev_attr_link_power_management_policy, &dev_attr_em_message_type, &dev_attr_em_message, + &dev_attr_ahci_host_caps, + &dev_attr_ahci_host_version, + &dev_attr_ahci_port_cmd, NULL }; @@ -702,6 +716,36 @@ static void ahci_enable_ahci(void __iomem *mmio) WARN_ON(1); } +static ssize_t ahci_show_host_caps(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct ata_port *ap = ata_shost_to_port(shost); + struct ahci_host_priv *hpriv = ap->host->private_data; + + return sprintf(buf, "%x\n", hpriv->cap); +} + +static ssize_t ahci_show_host_version(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct ata_port *ap = ata_shost_to_port(shost); + void __iomem *mmio = ap->host->iomap[AHCI_PCI_BAR]; + + return sprintf(buf, "%x\n", readl(mmio + HOST_VERSION)); +} + +static ssize_t ahci_show_port_cmd(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct ata_port *ap = ata_shost_to_port(shost); + void __iomem *port_mmio = ahci_port_base(ap); + + return sprintf(buf, "%x\n", readl(port_mmio + PORT_CMD)); +} + /** * ahci_save_initial_config - Save and fixup initial config values * @pdev: target PCI device |