Hello Maintainers,
Is there anything I can do to get this patch merged?
Thanks.
On Wed, 2022-05-18 at 09:55 +0800, Jianjun Wang wrote:
> Hi Maintainers,
>
> Gentle ping for this patch, if there is anything I can do to get this
> patch merged, please let me know.
>
> Thanks.
>
> On Fri, 2022-04-22 at 14:33 +0800, Jianjun Wang wrote:
> > Hi Maintainers,
> >
> > Just gentle ping for this patch, if there is anything I can do to
> > get
> > this patch merged, please let me know.
> >
> > Thanks.
> >
> > On Tue, 2022-03-29 at 11:07 +0800, Jianjun Wang wrote:
> > > Print current LTSSM state when PCIe link down instead of the
> > > register
> > > value, make it easier to get the link status.
> > >
> > > Signed-off-by: Jianjun Wang <jianjun.wang@xxxxxxxxxxxx>
> > > Reviewed-by: AngeloGioacchino Del Regno <
> > > angelogioacchino.delregno@xxxxxxxxxxxxx>
> > > ---
> > > Changes in v2:
> > > Print both of the register value and the LTSSM state.
> > > ---
> > > drivers/pci/controller/pcie-mediatek-gen3.c | 41
> > > ++++++++++++++++++++-
> > > 1 file changed, 40 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/pci/controller/pcie-mediatek-gen3.c
> > > b/drivers/pci/controller/pcie-mediatek-gen3.c
> > > index 6745076a02b9..c24e03c198b7 100644
> > > --- a/drivers/pci/controller/pcie-mediatek-gen3.c
> > > +++ b/drivers/pci/controller/pcie-mediatek-gen3.c
> > > @@ -153,6 +153,37 @@ struct mtk_gen3_pcie {
> > > DECLARE_BITMAP(msi_irq_in_use, PCIE_MSI_IRQS_NUM);
> > > };
> > >
> > > +/* LTSSM state in PCIE_LTSSM_STATUS_REG bit[28:24] */
> > > +static const char *const ltssm_str[] = {
> > > + "detect.quiet", /* 0x00 */
> > > + "detect.active", /* 0x01 */
> > > + "polling.active", /* 0x02 */
> > > + "polling.compliance", /* 0x03 */
> > > + "polling.configuration", /* 0x04 */
> > > + "config.linkwidthstart", /* 0x05 */
> > > + "config.linkwidthaccept", /* 0x06 */
> > > + "config.lanenumwait", /* 0x07 */
> > > + "config.lanenumaccept", /* 0x08 */
> > > + "config.complete", /* 0x09 */
> > > + "config.idle", /* 0x0A */
> > > + "recovery.receiverlock", /* 0x0B */
> > > + "recovery.equalization", /* 0x0C */
> > > + "recovery.speed", /* 0x0D */
> > > + "recovery.receiverconfig", /* 0x0E */
> > > + "recovery.idle", /* 0x0F */
> > > + "L0", /* 0x10 */
> > > + "L0s", /* 0x11 */
> > > + "L1.entry", /* 0x12 */
> > > + "L1.idle", /* 0x13 */
> > > + "L2.idle", /* 0x14 */
> > > + "L2.transmitwake", /* 0x15 */
> > > + "disable", /* 0x16 */
> > > + "loopback.entry", /* 0x17 */
> > > + "loopback.active", /* 0x18 */
> > > + "loopback.exit", /* 0x19 */
> > > + "hotreset", /* 0x1A */
> > > +};
> > > +
> > > /**
> > > * mtk_pcie_config_tlp_header() - Configure a configuration TLP
> > > header
> > > * @bus: PCI bus to query
> > > @@ -327,8 +358,16 @@ static int mtk_pcie_startup_port(struct
> > > mtk_gen3_pcie *pcie)
> > > !!(val & PCIE_PORT_LINKUP), 20,
> > > PCI_PM_D3COLD_WAIT * USEC_PER_MSEC);
> > > if (err) {
> > > + const char *ltssm_state;
> > > + int ltssm_index;
> > > +
> > > val = readl_relaxed(pcie->base +
> > > PCIE_LTSSM_STATUS_REG);
> > > - dev_err(pcie->dev, "PCIe link down, ltssm reg val:
> > > %#x\n", val);
> > > + ltssm_index = PCIE_LTSSM_STATE(val);
> > > + ltssm_state = ltssm_index >= ARRAY_SIZE(ltssm_str) ?
> > > + "Unknown state" : ltssm_str[ltssm_index];
> > > + dev_err(pcie->dev,
> > > + "PCIe link down, current ltssm state: %s
> > > (%#x)\n",
> > > + ltssm_state, val);
> > > return err;
> > > }
> > >
> >
> >
>
>
