Update the AHCI driver to display all of the HBA capabilities defined in the
AHCI 1.3 specification. Some of these are in a new CAP2 (HBA Capabilities
Extended) register.
For example, on an Intel Ibex Peak (PCH) controller:
ahci 0000:00:1f.2: flags: 64bit ncq sntf stag pm led clo pmp pio slum part ems
sxs apst
We don't do anything special with these new flags yet.
Signed-off-by: Robert Hancock <hancockrwd@xxxxxxxxx>
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index acd1162..d7b0f12 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -122,6 +122,7 @@ enum {
HOST_VERSION = 0x10, /* AHCI spec. version compliancy */
HOST_EM_LOC = 0x1c, /* Enclosure Management location */
HOST_EM_CTL = 0x20, /* Enclosure Management Control */
+ HOST_CAP2 = 0x24, /* host capabilities, extended */
/* HOST_CTL bits */
HOST_RESET = (1 << 0), /* reset controller; self-clear */
@@ -2534,13 +2535,14 @@ static void ahci_print_info(struct ata_host *host)
struct ahci_host_priv *hpriv = host->private_data;
struct pci_dev *pdev = to_pci_dev(host->dev);
void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
- u32 vers, cap, impl, speed;
+ u32 vers, cap, cap2, impl, speed;
const char *speed_s;
u16 cc;
const char *scc_s;
vers = readl(mmio + HOST_VERSION);
cap = hpriv->cap;
+ cap2 = readl(mmio + HOST_CAP2);
impl = hpriv->port_map;
speed = (cap >> 20) & 0xf;
@@ -2583,7 +2585,7 @@ static void ahci_print_info(struct ata_host *host)
"flags: "
"%s%s%s%s%s%s%s"
"%s%s%s%s%s%s%s"
- "%s\n"
+ "%s%s%s%s%s%s%s\n"
,
cap & (1 << 31) ? "64bit " : "",
@@ -2598,10 +2600,16 @@ static void ahci_print_info(struct ata_host *host)
cap & (1 << 19) ? "nz " : "",
cap & (1 << 18) ? "only " : "",
cap & (1 << 17) ? "pmp " : "",
+ cap & (1 << 16) ? "fbss " : "",
cap & (1 << 15) ? "pio " : "",
cap & (1 << 14) ? "slum " : "",
cap & (1 << 13) ? "part " : "",
- cap & (1 << 6) ? "ems ": ""
+ cap & (1 << 7) ? "ccc " : "",
+ cap & (1 << 6) ? "ems " : "",
+ cap & (1 << 5) ? "sxs " : "",
+ cap2 & (1 << 2) ? "apst " : "",
+ cap2 & (1 << 1) ? "nvmp " : "",
+ cap2 & (1 << 0) ? "boh " : ""
);
}
--
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