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[v8,0/9] PCI: mediatek: fixup find_port, enable_msi and add PM, module support

Message ID 1539590940-13355-1-git-send-email-honghui.zhang@mediatek.com (mailing list archive)
Headers show
Series PCI: mediatek: fixup find_port, enable_msi and add PM, module support | expand

Message

Honghui Zhang Oct. 15, 2018, 8:08 a.m. UTC
From: Honghui Zhang <honghui.zhang@mediatek.com>

This patchset includes misc patchs:

The patch 1 fixup the mtk_pcie_find_port logic which will cause system
could not touch the EP's configuration space that connected to PCIe slot 1.

The patch 2 fixup the class type for MT7622.
The patch 6 fixup the enable msi logic, the operation to enable MSI
should be after system clock is enabled. Call mtk_pcie_enable_msi in
mtk_pcie_startup_port_v2 since the clock was all enabled at that time.

The patch 7 was rebased and refactor of the v4 patch[1], changes are:
 -Add PM support for MT7622.
 -Using mtk_pcie_enable_port to re-establish the link when resumed.
 -Rebased on this patchset.

The patch 9 add loadable kernel module support.

[1] https://patchwork.kernel.org/patch/10479079

Change since v7:
 - Add Acked-by tags from Ryder Lee.
 - Add Fix tags for patch 2(Fix calss type for MT7622 as PCI_CLASS_BRIDGE_PCI)
   and patch 6(Fixup enable MSI logic by enable MSI after clock enabled)

Change since v6:
 - Remove the pci_unmap_iospace when remove the device since the
   devm_pci_remap_iospace is an devm_ version.
 - Commit message changed for patch 2(Fix class type for MT7622 as PCI_CLASS_BRIDGE_PCI).
 - Capitilizing "MSI" and "PM" in the patch title.

Change since v5:
 - A bit improvement of mtk_pcie_find_port suggest by Lorenzo.
   MSI after clock enabled).
 - Add Acked-by tags from Ryder.

Change since v4:
 - Add patch 2 to fixup class type for MT7622.
 - Add patch 3 to remove the redundant dev->pm_domain check
 - Add patch 4 to covert to use pci_host_probe
 - Add patch 5 to re-arrange the function define, this is a prepare patch for
   fixup the enable_msi logic, no functional changed have been made by this one.
 - Add patch 8 to save the GIC IRQ in mtk_pcie_port as a prepare patch for tear
   down the irq when remove the kernel module.
 - Re-arrange the find_port flow suggest by Lorenzo to make the code parse easier
   for the patch 1.
 - Remove the .pm_support in mtk_pcie_soc in patch 7 since if system pm was not
   supported, then those pm callbacks will never be executed for MT7622. So the
   .pm_support is not needed.

Change since v3:
 - Remove pm_runtime_XXX ops in suspend and resume callbacks in the third patch.
 - Rebase to 4.19-rc1.

Change since v2:
 - Fix the list_for_each_entry_safe parameter error.
 - Add Ryder's Acked-by flag.

Change since v1:
 - A bit of code refact of the first patch suggested by Andy Shevchenko, and
   commit message updated.

Honghui Zhang (9):
  PCI: mediatek: Using slot's devfn for compare to fix
    mtk_pcie_find_port logic
  PCI: mediatek: Fix class type for MT7622 as PCI_CLASS_BRIDGE_PCI
  PCI: mediatek: Remove the redundant dev->pm_domain check
  PCI: mediatek: Convert to use pci_host_probe()
  PCI: mediatek: Move the mtk_pcie_startup_port_v2 function's define
    after mtk_pcie_setup_irq
  PCI: mediatek: Fixup enable MSI logic by enable MSI after clock
    enabled
  PCI: mediatek: Add system PM support for MT2712 and MT7622
  PCI: mediatek: Save the GIC IRQ in mtk_pcie_port
  PCI: mediatek: Add loadable kernel module support

 drivers/pci/controller/Kconfig         |   2 +-
 drivers/pci/controller/pcie-mediatek.c | 319 +++++++++++++++++++++------------
 2 files changed, 204 insertions(+), 117 deletions(-)

Comments

Lorenzo Pieralisi Oct. 17, 2018, 3:19 p.m. UTC | #1
On Mon, Oct 15, 2018 at 04:08:51PM +0800, honghui.zhang@mediatek.com wrote:
> From: Honghui Zhang <honghui.zhang@mediatek.com>
> 
> This patchset includes misc patchs:
> 
> The patch 1 fixup the mtk_pcie_find_port logic which will cause system
> could not touch the EP's configuration space that connected to PCIe slot 1.
> 
> The patch 2 fixup the class type for MT7622.
> The patch 6 fixup the enable msi logic, the operation to enable MSI
> should be after system clock is enabled. Call mtk_pcie_enable_msi in
> mtk_pcie_startup_port_v2 since the clock was all enabled at that time.
> 
> The patch 7 was rebased and refactor of the v4 patch[1], changes are:
>  -Add PM support for MT7622.
>  -Using mtk_pcie_enable_port to re-establish the link when resumed.
>  -Rebased on this patchset.
> 
> The patch 9 add loadable kernel module support.
> 
> [1] https://patchwork.kernel.org/patch/10479079

I have pushed out (after basically rewriting all commit logs and
squashing two patches) this version of the patchset to my pci/mediatek
branch for v4.20, keeping in mind that you must follow-up with Bjorn on
this patch:

https://patchwork.ozlabs.org/patch/984668/

that we shall still consider for v4.21.

Lorenzo

> Change since v7:
>  - Add Acked-by tags from Ryder Lee.
>  - Add Fix tags for patch 2(Fix calss type for MT7622 as PCI_CLASS_BRIDGE_PCI)
>    and patch 6(Fixup enable MSI logic by enable MSI after clock enabled)
> 
> Change since v6:
>  - Remove the pci_unmap_iospace when remove the device since the
>    devm_pci_remap_iospace is an devm_ version.
>  - Commit message changed for patch 2(Fix class type for MT7622 as PCI_CLASS_BRIDGE_PCI).
>  - Capitilizing "MSI" and "PM" in the patch title.
> 
> Change since v5:
>  - A bit improvement of mtk_pcie_find_port suggest by Lorenzo.
>    MSI after clock enabled).
>  - Add Acked-by tags from Ryder.
> 
> Change since v4:
>  - Add patch 2 to fixup class type for MT7622.
>  - Add patch 3 to remove the redundant dev->pm_domain check
>  - Add patch 4 to covert to use pci_host_probe
>  - Add patch 5 to re-arrange the function define, this is a prepare patch for
>    fixup the enable_msi logic, no functional changed have been made by this one.
>  - Add patch 8 to save the GIC IRQ in mtk_pcie_port as a prepare patch for tear
>    down the irq when remove the kernel module.
>  - Re-arrange the find_port flow suggest by Lorenzo to make the code parse easier
>    for the patch 1.
>  - Remove the .pm_support in mtk_pcie_soc in patch 7 since if system pm was not
>    supported, then those pm callbacks will never be executed for MT7622. So the
>    .pm_support is not needed.
> 
> Change since v3:
>  - Remove pm_runtime_XXX ops in suspend and resume callbacks in the third patch.
>  - Rebase to 4.19-rc1.
> 
> Change since v2:
>  - Fix the list_for_each_entry_safe parameter error.
>  - Add Ryder's Acked-by flag.
> 
> Change since v1:
>  - A bit of code refact of the first patch suggested by Andy Shevchenko, and
>    commit message updated.
> 
> Honghui Zhang (9):
>   PCI: mediatek: Using slot's devfn for compare to fix
>     mtk_pcie_find_port logic
>   PCI: mediatek: Fix class type for MT7622 as PCI_CLASS_BRIDGE_PCI
>   PCI: mediatek: Remove the redundant dev->pm_domain check
>   PCI: mediatek: Convert to use pci_host_probe()
>   PCI: mediatek: Move the mtk_pcie_startup_port_v2 function's define
>     after mtk_pcie_setup_irq
>   PCI: mediatek: Fixup enable MSI logic by enable MSI after clock
>     enabled
>   PCI: mediatek: Add system PM support for MT2712 and MT7622
>   PCI: mediatek: Save the GIC IRQ in mtk_pcie_port
>   PCI: mediatek: Add loadable kernel module support
> 
>  drivers/pci/controller/Kconfig         |   2 +-
>  drivers/pci/controller/pcie-mediatek.c | 319 +++++++++++++++++++++------------
>  2 files changed, 204 insertions(+), 117 deletions(-)
> 
> -- 
> 2.6.4
>
Honghui Zhang Oct. 18, 2018, 1:26 a.m. UTC | #2
On Wed, 2018-10-17 at 16:19 +0100, Lorenzo Pieralisi wrote:
> On Mon, Oct 15, 2018 at 04:08:51PM +0800, honghui.zhang@mediatek.com wrote:
> > From: Honghui Zhang <honghui.zhang@mediatek.com>
> > 
> > This patchset includes misc patchs:
> > 
> > The patch 1 fixup the mtk_pcie_find_port logic which will cause system
> > could not touch the EP's configuration space that connected to PCIe slot 1.
> > 
> > The patch 2 fixup the class type for MT7622.
> > The patch 6 fixup the enable msi logic, the operation to enable MSI
> > should be after system clock is enabled. Call mtk_pcie_enable_msi in
> > mtk_pcie_startup_port_v2 since the clock was all enabled at that time.
> > 
> > The patch 7 was rebased and refactor of the v4 patch[1], changes are:
> >  -Add PM support for MT7622.
> >  -Using mtk_pcie_enable_port to re-establish the link when resumed.
> >  -Rebased on this patchset.
> > 
> > The patch 9 add loadable kernel module support.
> > 
> > [1] https://patchwork.kernel.org/patch/10479079
> 
> I have pushed out (after basically rewriting all commit logs and
> squashing two patches) this version of the patchset to my pci/mediatek
> branch for v4.20, keeping in mind that you must follow-up with Bjorn on
> this patch:

Thanks for your great help with this serial.

> 
> https://patchwork.ozlabs.org/patch/984668/
> 
> that we shall still consider for v4.21.
> 
> Lorenzo
> 
> > Change since v7:
> >  - Add Acked-by tags from Ryder Lee.
> >  - Add Fix tags for patch 2(Fix calss type for MT7622 as PCI_CLASS_BRIDGE_PCI)
> >    and patch 6(Fixup enable MSI logic by enable MSI after clock enabled)
> > 
> > Change since v6:
> >  - Remove the pci_unmap_iospace when remove the device since the
> >    devm_pci_remap_iospace is an devm_ version.
> >  - Commit message changed for patch 2(Fix class type for MT7622 as PCI_CLASS_BRIDGE_PCI).
> >  - Capitilizing "MSI" and "PM" in the patch title.
> > 
> > Change since v5:
> >  - A bit improvement of mtk_pcie_find_port suggest by Lorenzo.
> >    MSI after clock enabled).
> >  - Add Acked-by tags from Ryder.
> > 
> > Change since v4:
> >  - Add patch 2 to fixup class type for MT7622.
> >  - Add patch 3 to remove the redundant dev->pm_domain check
> >  - Add patch 4 to covert to use pci_host_probe
> >  - Add patch 5 to re-arrange the function define, this is a prepare patch for
> >    fixup the enable_msi logic, no functional changed have been made by this one.
> >  - Add patch 8 to save the GIC IRQ in mtk_pcie_port as a prepare patch for tear
> >    down the irq when remove the kernel module.
> >  - Re-arrange the find_port flow suggest by Lorenzo to make the code parse easier
> >    for the patch 1.
> >  - Remove the .pm_support in mtk_pcie_soc in patch 7 since if system pm was not
> >    supported, then those pm callbacks will never be executed for MT7622. So the
> >    .pm_support is not needed.
> > 
> > Change since v3:
> >  - Remove pm_runtime_XXX ops in suspend and resume callbacks in the third patch.
> >  - Rebase to 4.19-rc1.
> > 
> > Change since v2:
> >  - Fix the list_for_each_entry_safe parameter error.
> >  - Add Ryder's Acked-by flag.
> > 
> > Change since v1:
> >  - A bit of code refact of the first patch suggested by Andy Shevchenko, and
> >    commit message updated.
> > 
> > Honghui Zhang (9):
> >   PCI: mediatek: Using slot's devfn for compare to fix
> >     mtk_pcie_find_port logic
> >   PCI: mediatek: Fix class type for MT7622 as PCI_CLASS_BRIDGE_PCI
> >   PCI: mediatek: Remove the redundant dev->pm_domain check
> >   PCI: mediatek: Convert to use pci_host_probe()
> >   PCI: mediatek: Move the mtk_pcie_startup_port_v2 function's define
> >     after mtk_pcie_setup_irq
> >   PCI: mediatek: Fixup enable MSI logic by enable MSI after clock
> >     enabled
> >   PCI: mediatek: Add system PM support for MT2712 and MT7622
> >   PCI: mediatek: Save the GIC IRQ in mtk_pcie_port
> >   PCI: mediatek: Add loadable kernel module support
> > 
> >  drivers/pci/controller/Kconfig         |   2 +-
> >  drivers/pci/controller/pcie-mediatek.c | 319 +++++++++++++++++++++------------
> >  2 files changed, 204 insertions(+), 117 deletions(-)
> > 
> > -- 
> > 2.6.4
> >