> -----Original Message-----
> From: [email protected] [mailto:linux-pci-
> [email protected]] On Behalf Of James Morse
> Sent: Wednesday, July 01, 2015 3:27 PM
> To: Gabriele Paoloni; Wangzhou (B); Bjorn Helgaas; Jingoo Han; Pratyush
> Anand; Arnd Bergmann; Liviu Dudau; [email protected]; [email protected]; m-
> [email protected]; [email protected]
> Cc: [email protected]; [email protected];
> [email protected]; Yuanzhichang; Zhudacai; zhangjukuo;
> qiuzhenfa; Liguozhu (Kenneth)
> Subject: Re: [PATCH v3 2/5] PCI: designware: Add ARM64 support
>
> Zhou Wang wrote:
> > I tested this patch on D02 board of Hisilicon. It works well.
> > I have compiled the driver with multi_v7_defconfig. However, I don't
> > have
> > ARM32 PCIe related board to do test. It will be appreciated if
> someone
> > could
> > help to test it.
> >
> > Signed-off-by: Zhou Wang <[email protected]>
> > Signed-off-by: Arnd Bergmann <[email protected]>
> > Signed-off-by: Gabriele Paoloni <[email protected]>
> > Tested-by: Fabrice Gasnier <[email protected]>
> > Tested-by: James Morse <[email protected]>
>
> Tests on this new series, using the same i.MX 6Quad board, are not
> working.
>
> The network card is no longer detected, and I get a lockup when
> removing
> the root bridge and rescanning.
>
> Partial dmesg output below. Significantly, the lines:
> > [ 0.152128] PCI host bridge /soc/pcie@0x01000000 ranges:
> > [ 0.152142] No bus range found for /soc/pcie@0x01000000, using
> [bus
> 00-ff]
> are new.
>
> Both series are applied to v4.1, use the same .config file, and the
> same dtb.
> I will investigate further.
>
> (Re-testing v2 works, so this isn't an interim hardware failure)
This is a bit weird....
Patch 2/5 is the only one that affect platforms different from Hisilicon
The only difference between V3 patch[2/5] and v2 patch[2/4] is
*************
diff --git a/drivers/pci/host/pci-keystone-dw.c
b/drivers/pci/host/pci-keystone-dw.c
index f34892e..b1e4135 100644
--- a/drivers/pci/host/pci-keystone-dw.c
+++ b/drivers/pci/host/pci-keystone-dw.c
@@ -327,7 +327,7 @@ static void ks_dw_pcie_clear_dbi_mode(void __iomem
*reg_virt)
void ks_dw_pcie_setup_rc_app_regs(struct keystone_pcie *ks_pcie)
{
struct pcie_port *pp = &ks_pcie->pp;
- u32 start = pp->mem.start, end = pp->mem.end;
+ u32 start = pp->mem->start, end = pp->mem->end;
int i, tr_size;
/* Disable BARs for inbound access */
**************
That is present in v3 but not in v2. And it should affect keystone only....so
using patch v3 on the same branch where you applied patch v2 I would expect the
same results...
>
> Thanks,
>
> James
>
>
>
> root@localhost:~# dmesg | grep -i pci
> [ 0.126184] PCI: CLS 0 bytes, default 64
> [ 0.152128] PCI host bridge /soc/pcie@0x01000000 ranges:
> [ 0.152142] No bus range found for /soc/pcie@0x01000000, using
> [bus 00-ff]
> [ 0.154183] imx6q-pcie 1ffc000.pcie: PCI host bridge to bus 0000:00
> [ 0.154201] pci_bus 0000:00: root bus resource [bus 00-ff]
> [ 0.154215] pci_bus 0000:00: root bus resource [???
> 0x01f00000-0x01f7ffff flags 0x0]
> [ 0.154228] pci_bus 0000:00: root bus resource [io 0x0000-0xffff]
> [ 0.154270] pci_bus 0000:00: root bus resource [mem 0x01000000-
> 0x01efffff]
> [ 0.154306] pci 0000:00:00.0: [16c3:abcd] type 01 class 0x060400
> [ 0.154333] pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x000fffff]
> [ 0.154352] pci 0000:00:00.0: reg 0x38: [mem 0x00000000-0x0000ffff
> pref]
> [ 0.154377] pci 0000:00:00.0: IOMMU is currently not supported for
> PCI
> [ 0.154429] pci 0000:00:00.0: supports D1
> [ 0.154440] pci 0000:00:00.0: PME# supported from D0 D1 D3hot D3cold
> [ 0.154683] PCI: bus0: Fast back to back transfers disabled
> [ 0.154806] PCI: bus1: Fast back to back transfers enabled
> [ 0.154884] pci 0000:00:00.0: BAR 0: assigned [mem 0x01000000-
> 0x010fffff]
> [ 0.154903] pci 0000:00:00.0: BAR 6: assigned [mem 0x01100000-
> 0x0110ffff
> pref]
> [ 0.154917] pci 0000:00:00.0: PCI bridge to [bus 01]
> [ 0.155145] pcieport 0000:00:00.0: Signaling PME through PCIe PME
> interrupt
> [ 0.155161] pcie_pme 0000:00:00.0:pcie01: service driver pcie_pme
> loaded
> [ 0.155279] aer 0000:00:00.0:pcie02: service driver aer loaded
> [ 1.188840] ehci-pci: EHCI PCI platform driver
> [ 1.232518] ohci-pci: OHCI PCI platform driver
>
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