diff options
Diffstat (limited to 'src/sys')
| -rw-r--r-- | src/sys/include/io/ic/ahciregs.h | 1 | ||||
| -rw-r--r-- | src/sys/io/ic/ahci.c | 7 |
2 files changed, 8 insertions, 0 deletions
diff --git a/src/sys/include/io/ic/ahciregs.h b/src/sys/include/io/ic/ahciregs.h index cb212ea..a62df04 100644 --- a/src/sys/include/io/ic/ahciregs.h +++ b/src/sys/include/io/ic/ahciregs.h @@ -134,6 +134,7 @@ struct hba_memspace { #define AHCI_CAP_EMS(CAP) ((CAP >> 6) & 1) /* Enclosure management support */ #define AHCI_CAP_SAL(CAP) ((CAP >> 25) & 1) /* Supports activity LED */ #define AHCI_CAP_SSS(CAP) ((CAP >> 27) & 1) /* Supports staggered spin up */ +#define AHCI_CAP_S64A(CAP) ((CAP >> 31) & 1) /* Supports 64-bit addressing */ /* * Device detection (DET) and Interface power diff --git a/src/sys/io/ic/ahci.c b/src/sys/io/ic/ahci.c index 3a6f0c3..5cc675f 100644 --- a/src/sys/io/ic/ahci.c +++ b/src/sys/io/ic/ahci.c @@ -286,6 +286,13 @@ ahci_hba_init(struct ahci_hba *hba) hba->pi = mmio_read32(&io->pi); hba->nport = AHCI_CAP_NP(cap) + 1; + /* Only support 64-bit addressing as of now */ + if (AHCI_CAP_S64A(cap) == 0) { + pr_trace("HBA does not support 64-bit addressing\n"); + pr_trace("aborting..\n"); + return -ENOTSUP; + } + /* * We cannot be so certain what state the BIOS or whatever * firmware left the host controller in, therefore the HBA |