From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: "Rob Herring" <robh@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Lorenzo Pieralisi" <lorenzo.pieralisi@arm.com>,
"Jingoo Han" <jingoohan1@gmail.com>,
"Gustavo Pimentel" <gustavo.pimentel@synopsys.com>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Serge Semin" <fancer.lancer@gmail.com>,
"Alexey Malahov" <Alexey.Malahov@baikalelectronics.ru>,
"Pavel Parkhomenko" <Pavel.Parkhomenko@baikalelectronics.ru>,
"Frank Li" <Frank.Li@nxp.com>,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH RESEND v5 14/18] PCI: dwc: Move io_cfg_atu_shared to the Root Port descriptor
Date: Tue, 28 Jun 2022 12:14:49 +0530 [thread overview]
Message-ID: <20220628064449.GG23601@thinkpad> (raw)
In-Reply-To: <20220624143428.8334-15-Sergey.Semin@baikalelectronics.ru>
On Fri, Jun 24, 2022 at 05:34:24PM +0300, Serge Semin wrote:
> That flag is set if there is an outbound iATU window used for both PCIe
> peripheral config-space accesses and IO ports transfers. Since the flag
> semantic is purely Root Port specific, it's unused in neither the DW PCIe
> common code nor in the DW PCIe Endpoint driver, we can freely move it to
> the DW PCIe Root Port descriptor. Thus the pcie_port structure will be
> more coherent.
>
> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Thanks,
Mani
> Reviewed-by: Rob Herring <robh@kernel.org>
>
> ---
>
> Changelog v4:
> - This is a new patch created on the v4 lap of the series.
> ---
> drivers/pci/controller/dwc/pcie-designware-host.c | 6 +++---
> drivers/pci/controller/dwc/pcie-designware.h | 2 +-
> 2 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
> index c49a3bde7a2a..7ff2b7555b91 100644
> --- a/drivers/pci/controller/dwc/pcie-designware-host.c
> +++ b/drivers/pci/controller/dwc/pcie-designware-host.c
> @@ -492,7 +492,7 @@ static int dw_pcie_rd_other_conf(struct pci_bus *bus, unsigned int devfn,
>
> ret = pci_generic_config_read(bus, devfn, where, size, val);
>
> - if (!ret && pci->io_cfg_atu_shared)
> + if (!ret && pp->cfg0_io_shared)
> dw_pcie_prog_outbound_atu(pci, 0, PCIE_ATU_TYPE_IO, pp->io_base,
> pp->io_bus_addr, pp->io_size);
>
> @@ -508,7 +508,7 @@ static int dw_pcie_wr_other_conf(struct pci_bus *bus, unsigned int devfn,
>
> ret = pci_generic_config_write(bus, devfn, where, size, val);
>
> - if (!ret && pci->io_cfg_atu_shared)
> + if (!ret && pp->cfg0_io_shared)
> dw_pcie_prog_outbound_atu(pci, 0, PCIE_ATU_TYPE_IO, pp->io_base,
> pp->io_bus_addr, pp->io_size);
>
> @@ -627,7 +627,7 @@ void dw_pcie_setup_rc(struct pcie_port *pp)
> PCIE_ATU_TYPE_IO, pp->io_base,
> pp->io_bus_addr, pp->io_size);
> else
> - pci->io_cfg_atu_shared = true;
> + pp->cfg0_io_shared = true;
> }
>
> if (pci->num_ob_windows <= atu_idx)
> diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
> index 8ba239292634..13bffa3eaed6 100644
> --- a/drivers/pci/controller/dwc/pcie-designware.h
> +++ b/drivers/pci/controller/dwc/pcie-designware.h
> @@ -179,6 +179,7 @@ struct dw_pcie_host_ops {
>
> struct pcie_port {
> bool has_msi_ctrl:1;
> + bool cfg0_io_shared:1;
> u64 cfg0_base;
> void __iomem *va_cfg0_base;
> u32 cfg0_size;
> @@ -274,7 +275,6 @@ struct dw_pcie {
> int link_gen;
> u8 n_fts[2];
> bool iatu_unroll_enabled: 1;
> - bool io_cfg_atu_shared: 1;
> };
>
> #define to_dw_pcie_from_pp(port) container_of((port), struct dw_pcie, pp)
> --
> 2.35.1
>
--
மணிவண்ணன் சதாசிவம்
next prev parent reply other threads:[~2022-06-28 6:45 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-24 14:34 [PATCH RESEND v5 00/18] PCI: dwc: Various fixes and cleanups Serge Semin
2022-06-24 14:34 ` [PATCH RESEND v5 01/18] PCI: dwc: Stop link in the host init error and de-initialization Serge Semin
2022-06-24 14:34 ` [PATCH RESEND v5 02/18] PCI: dwc: Add unroll iATU space support to the regions disable method Serge Semin
2022-06-24 14:34 ` [PATCH RESEND v5 03/18] PCI: dwc: Disable outbound windows for controllers with iATU Serge Semin
2022-06-27 22:40 ` Bjorn Helgaas
2022-06-28 11:42 ` Serge Semin
2022-06-24 14:34 ` [PATCH RESEND v5 04/18] PCI: dwc: Set INCREASE_REGION_SIZE flag based on limit address Serge Semin
2022-06-24 14:34 ` [PATCH RESEND v5 05/18] PCI: dwc: Deallocate EPC memory on EP init error Serge Semin
2022-06-28 6:35 ` Manivannan Sadhasivam
2022-06-24 14:34 ` [PATCH RESEND v5 06/18] PCI: dwc: Enable CDM-check independently from the num_lanes value Serge Semin
2022-06-28 6:37 ` Manivannan Sadhasivam
2022-06-24 14:34 ` [PATCH RESEND v5 07/18] PCI: dwc: Add braces to the multi-line if-else statements Serge Semin
2022-06-24 14:34 ` [PATCH RESEND v5 08/18] PCI: dwc: Add trailing new-line literals to the log messages Serge Semin
2022-06-24 14:34 ` [PATCH RESEND v5 09/18] PCI: dwc: Discard IP-core version checking on unrolled iATU detection Serge Semin
2022-06-24 14:34 ` [PATCH RESEND v5 10/18] PCI: dwc: Convert Link-up status method to using dw_pcie_readl_dbi() Serge Semin
2022-06-24 14:34 ` [PATCH RESEND v5 11/18] PCI: dwc: Organize local variables usage Serge Semin
2022-06-28 6:38 ` Manivannan Sadhasivam
2022-06-28 23:33 ` Bjorn Helgaas
2022-06-29 2:03 ` Serge Semin
2022-06-24 14:34 ` [PATCH RESEND v5 12/18] PCI: dwc: Re-use local pointer to the resource data Serge Semin
2022-06-28 6:39 ` Manivannan Sadhasivam
2022-06-24 14:34 ` [PATCH RESEND v5 13/18] PCI: dwc: Add start_link/stop_link inliners Serge Semin
2022-06-28 6:43 ` Manivannan Sadhasivam
2022-06-24 14:34 ` [PATCH RESEND v5 14/18] PCI: dwc: Move io_cfg_atu_shared to the Root Port descriptor Serge Semin
2022-06-28 6:44 ` Manivannan Sadhasivam [this message]
2022-06-24 14:34 ` [PATCH RESEND v5 15/18] PCI: dwc: Add dw_ prefix to the pcie_port structure name Serge Semin
2022-06-27 11:47 ` Jesper Nilsson
2022-06-27 12:16 ` Neil Armstrong
2022-06-28 6:46 ` Manivannan Sadhasivam
2022-06-24 14:34 ` [PATCH RESEND v5 16/18] PCI: dwc-plat: Simplify the probe method return value handling Serge Semin
2022-06-24 14:34 ` [PATCH RESEND v5 17/18] PCI: dwc-plat: Discard unused regmap pointer Serge Semin
2022-06-24 14:34 ` [PATCH RESEND v5 18/18] PCI: dwc-plat: Drop dw_plat_pcie_of_match forward declaration Serge Semin
2022-06-28 6:58 ` [PATCH RESEND v5 00/18] PCI: dwc: Various fixes and cleanups Manivannan Sadhasivam
2022-06-28 11:57 ` Serge Semin
2022-06-28 23:35 ` Bjorn Helgaas
2022-06-29 1:38 ` Serge Semin
2022-07-11 18:40 ` Serge Semin
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