diff options
| -rw-r--r-- | payloads/libpayload/drivers/storage/ahci.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/payloads/libpayload/drivers/storage/ahci.c b/payloads/libpayload/drivers/storage/ahci.c index 0e7fd7d8e0..3a0b99df42 100644 --- a/payloads/libpayload/drivers/storage/ahci.c +++ b/payloads/libpayload/drivers/storage/ahci.c @@ -34,6 +34,7 @@ #include <string.h> #include <libpayload.h> #include <pci.h> +#include <pci/pci.h> #include <storage/ata.h> #include <storage/ahci.h> @@ -267,6 +268,10 @@ static void ahci_init_pci(pcidev_t dev) /* Set AHCI access mode. */ ctrl->global_ctrl |= HBA_CTRL_AHCI_EN; + /* Enable bus mastering. */ + const u16 command = pci_read_config16(dev, PCI_COMMAND); + pci_write_config16(dev, PCI_COMMAND, command | PCI_COMMAND_MASTER); + /* Probe for devices. */ for (i = 0; i < 32; ++i) { if (ctrl->ports_impl & (1 << i)) |