diff options
| author | Nico Huber <nico.huber@secunet.com> | 2017-07-24 17:09:35 +0200 |
|---|---|---|
| committer | Nico Huber <nico.h@gmx.de> | 2017-07-27 13:56:45 +0000 |
| commit | a67dd9de7708563df5b7f019b3c32ac005d5db2e (patch) | |
| tree | a39887796f57437832158350df61cd6583891812 /payloads/libpayload/drivers | |
| parent | 812f1783bbf437e57e7176ec8a2d29e478c27e92 (diff) | |
libpayload/storage: Enable bus mastering for AHCI
This is (thankfully) not done by coreboot any more for recent chipsets.
Change-Id: If56e38037f7b1e53871ee63e6ff297028c59d493
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/20763
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Diffstat (limited to 'payloads/libpayload/drivers')
| -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)) |