On Sat, Oct 24, 2020 at 04:03:41AM +0000, Jingoo Han wrote: > On 10/23/20, 3:57 PM, Vidya Sagar wrote: > > > > This patch series adds support for configuring the DesignWare IP's ATU > > region for prefetchable memory translations. > > It first starts by flagging a warning if the size of non-prefetchable > > aperture goes beyond 32-bit as PCIe spec doesn't allow it. > > And then adds required support for programming the ATU to handle higher > > (i.e. >4GB) sizes and then finally adds support for differentiating > > between prefetchable and non-prefetchable regions and configuring one of > > the ATU regions for prefetchable memory translations purpose. > > > > Vidya Sagar (3): > > PCI: of: Warn if non-prefetchable memory aperture size is > 32-bit > > PCI: dwc: Add support to program ATU for >4GB memory aperture sizes > > PCI: dwc: Add support to handle prefetchable memory mapping > > For 2nd & 3rd, > Acked-by: Jingoo <jingoohan1@xxxxxxxxx> > But, I still want someone to ack 1st patch, not me. > > To Vidya, > If possible, can you ask your coworker to give 'Tested-by'? It will be very helpful. > Thank you. On next-20201026 (but also going back quite a while) I'm seeing this during boot on Jetson AGX Xavier (Tegra194): [ 3.493382] ahci 0001:01:00.0: version 3.0 [ 3.493889] ahci 0001:01:00.0: SSS flag set, parallel bus scan disabled [ 4.497706] ahci 0001:01:00.0: controller reset failed (0xffffffff) [ 4.498114] ahci: probe of 0001:01:00.0 failed with error -5 After applying this series, AHCI over PCI is back to normal: [ 3.543230] ahci 0001:01:00.0: AHCI 0001.0000 32 slots 1 ports 6 Gbps 0x1 impl SATA mode [ 3.550841] ahci 0001:01:00.0: flags: 64bit ncq sntf led only pmp fbs pio slum part sxs [ 3.559747] scsi host0: ahci [ 3.561998] ata1: SATA max UDMA/133 abar m512@0x1230010000 port 0x1230010100 irq 63 So for the series: Tested-by: Thierry Reding <treding@xxxxxxxxxx>
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