diff options
| author | Zeh, Werner <werner.zeh@siemens.com> | 2017-06-23 07:18:04 +0000 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2017-07-02 12:58:52 -0400 |
| commit | b3a9f27fb1f63e9b6bf5ca424d31e23bd5b4c2f0 (patch) | |
| tree | f75be41ed72e652d336ddd10bac76076b5d3e31a | |
| parent | 7759d3a5be049eb8d0b4f7c6b1f1a0ba5e871cf3 (diff) | |
| download | seabios-b3a9f27fb1f63e9b6bf5ca424d31e23bd5b4c2f0.tar.gz | |
ahci: Disable Native Command Queueing
The AHCI driver currently sets the NCQ bit for every command that is
issued to the SATA drive. This is not needed as there is always only
one command active at a time and in turn can lead to a hanging AHCI
controller (true for Marvel 88SE9170). The following patch disables
the usage of NCQ completely. With this patch the Marvel AHCI
controller works just fine without any issues.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
| -rw-r--r-- | src/hw/ahci.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/src/hw/ahci.c b/src/hw/ahci.c index 2eee192b..b9043b9f 100644 --- a/src/hw/ahci.c +++ b/src/hw/ahci.c @@ -130,7 +130,6 @@ static int ahci_command(struct ahci_port_s *port_gf, int iswrite, int isatapi, intbits = ahci_port_readl(ctrl, pnr, PORT_IRQ_STAT); if (intbits) ahci_port_writel(ctrl, pnr, PORT_IRQ_STAT, intbits); - ahci_port_writel(ctrl, pnr, PORT_SCR_ACT, 1); ahci_port_writel(ctrl, pnr, PORT_CMD_ISSUE, 1); u32 end = timer_calc(AHCI_REQUEST_TIMEOUT); |