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path: root/drivers/ata/libata-eh.c
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Diffstat (limited to 'drivers/ata/libata-eh.c')
-rw-r--r--drivers/ata/libata-eh.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index 2ddc2ed9c29d..8219e2d71045 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -151,6 +151,73 @@ void ata_ehi_clear_desc(struct ata_eh_info *ehi)
ehi->desc_len = 0;
}
+/**
+ * ata_port_desc - append port description
+ * @ap: target ATA port
+ * @fmt: printf format string
+ *
+ * Format string according to @fmt and append it to port
+ * description. If port description is not empty, " " is added
+ * in-between. This function is to be used while initializing
+ * ata_host. The description is printed on host registration.
+ *
+ * LOCKING:
+ * None.
+ */
+void ata_port_desc(struct ata_port *ap, const char *fmt, ...)
+{
+ va_list args;
+
+ WARN_ON(!(ap->pflags & ATA_PFLAG_INITIALIZING));
+
+ if (ap->link.eh_info.desc_len)
+ __ata_ehi_push_desc(&ap->link.eh_info, " ");
+
+ va_start(args, fmt);
+ __ata_ehi_pushv_desc(&ap->link.eh_info, fmt, args);
+ va_end(args);
+}
+
+#ifdef CONFIG_PCI
+
+/**
+ * ata_port_pbar_desc - append PCI BAR description
+ * @ap: target ATA port
+ * @bar: target PCI BAR
+ * @offset: offset into PCI BAR
+ * @name: name of the area
+ *
+ * If @offset is negative, this function formats a string which
+ * contains the name, address, size and type of the BAR and
+ * appends it to the port description. If @offset is zero or
+ * positive, only name and offsetted address is appended.
+ *
+ * LOCKING:
+ * None.
+ */
+void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
+ const char *name)
+{
+ struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+ char *type = "";
+ unsigned long long start, len;
+
+ if (pci_resource_flags(pdev, bar) & IORESOURCE_MEM)
+ type = "m";
+ else if (pci_resource_flags(pdev, bar) & IORESOURCE_IO)
+ type = "i";
+
+ start = (unsigned long long)pci_resource_start(pdev, bar);
+ len = (unsigned long long)pci_resource_len(pdev, bar);
+
+ if (offset < 0)
+ ata_port_desc(ap, "%s %s%llu@0x%llx", name, type, len, start);
+ else
+ ata_port_desc(ap, "%s 0x%llx", name, start + offset);
+}
+
+#endif /* CONFIG_PCI */
+
static void ata_ering_record(struct ata_ering *ering, int is_io,
unsigned int err_mask)
{