From: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
To: Niklas Cassel <niklas.cassel@axis.com>,
"kishon@ti.com" <kishon@ti.com>,
"cyrille.pitchen@free-electrons.com"
<cyrille.pitchen@free-electrons.com>,
Jingoo Han <jingoohan1@gmail.com>,
Joao Pinto <Joao.Pinto@synopsys.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Bjorn Helgaas <bhelgaas@google.com>
Cc: Niklas Cassel <niklass@axis.com>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v5 11/12] PCI: designware-ep: Make dw_pcie_ep_reset_bar() handle 64-bit BARs properly
Date: Wed, 28 Mar 2018 14:14:51 +0100 [thread overview]
Message-ID: <71fe27b4-60ca-898e-e41c-5e93f9b44af2@synopsys.com> (raw)
In-Reply-To: <20180328115018.31921-12-niklas.cassel@axis.com>
Hi Niklas,
On 28/03/2018 12:50, Niklas Cassel wrote:
> Since a 64-bit BAR consists of a BAR pair, we need to write to both
> BARs in the BAR pair to clear the BAR properly.
>
> Signed-off-by: Niklas Cassel <niklas.cassel@axis.com>
> ---
> drivers/pci/dwc/pcie-designware-ep.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/pci/dwc/pcie-designware-ep.c b/drivers/pci/dwc/pcie-designware-ep.c
> index cc4d8381c1dc..4d304e3ccf24 100644
> --- a/drivers/pci/dwc/pcie-designware-ep.c
> +++ b/drivers/pci/dwc/pcie-designware-ep.c
> @@ -28,6 +28,10 @@ static void __dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar,
> dw_pcie_dbi_ro_wr_en(pci);
> dw_pcie_writel_dbi2(pci, reg, 0x0);
> dw_pcie_writel_dbi(pci, reg, 0x0);
> + if (flags & PCI_BASE_ADDRESS_MEM_TYPE_64) {
> + dw_pcie_writel_dbi2(pci, reg + 4, 0x0);
> + dw_pcie_writel_dbi(pci, reg + 4, 0x0);
> + }
> dw_pcie_dbi_ro_wr_dis(pci);
> }
>
>
Seems good to me. :)
Reviewed-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
next prev parent reply other threads:[~2018-03-28 13:15 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-28 11:50 [PATCH v5 00/12] PCI endpoint 64-bit BAR fixes Niklas Cassel
2018-03-28 11:50 ` [PATCH v5 01/12] PCI: endpoint: BAR width should not depend on sizeof dma_addr_t Niklas Cassel
2018-03-29 9:35 ` Kishon Vijay Abraham I
2018-03-28 11:50 ` [PATCH v5 02/12] PCI: endpoint: Simplify epc->ops->set_bar()/pci_epc_set_bar() Niklas Cassel
2018-03-28 13:12 ` Gustavo Pimentel
2018-03-29 9:36 ` Kishon Vijay Abraham I
2018-03-28 11:50 ` [PATCH v5 03/12] PCI: endpoint: Setting BAR_5 to 64-bits wide is invalid Niklas Cassel
2018-03-29 9:40 ` Kishon Vijay Abraham I
2018-03-28 11:50 ` [PATCH v5 04/12] PCI: endpoint: Setting 64-bit/prefetch bit is invalid when IO is set Niklas Cassel
2018-03-29 9:42 ` Kishon Vijay Abraham I
2018-03-28 11:50 ` [PATCH v5 05/12] PCI: endpoint: Setting a BAR size > 4 GB is invalid if 64-bit flag is not set Niklas Cassel
2018-03-29 9:42 ` Kishon Vijay Abraham I
2018-03-28 11:50 ` [PATCH v5 06/12] PCI: designware-ep: Make dw_pcie_ep_set_bar() handle 64-bit BARs properly Niklas Cassel
2018-03-28 13:13 ` Gustavo Pimentel
2018-03-29 9:47 ` Kishon Vijay Abraham I
2018-04-02 19:37 ` Niklas Cassel
2018-04-03 5:39 ` Kishon Vijay Abraham I
2018-04-03 12:53 ` Lorenzo Pieralisi
2018-04-03 14:03 ` Niklas Cassel
2018-03-28 11:50 ` [PATCH v5 07/12] PCI: cadence: Set PCI_BASE_ADDRESS_MEM_TYPE_64 if a 64-bit BAR was set-up Niklas Cassel
2018-03-28 13:24 ` Alan Douglas
2018-03-28 19:37 ` Bjorn Helgaas
2018-03-29 16:49 ` Alan Douglas
2018-03-28 11:50 ` [PATCH v5 08/12] PCI: endpoint: Handle 64-bit BARs properly Niklas Cassel
2018-03-29 9:50 ` Kishon Vijay Abraham I
2018-03-28 11:50 ` [PATCH v5 09/12] PCI: endpoint: Make epc->ops->clear_bar()/pci_epc_clear_bar() take struct *epf_bar Niklas Cassel
2018-03-28 13:14 ` Gustavo Pimentel
2018-03-29 10:00 ` Kishon Vijay Abraham I
2018-04-02 18:47 ` Niklas Cassel
2018-03-28 11:50 ` [PATCH v5 10/12] PCI: endpoint: Make sure that BAR_5 does not have 64-bit flag set when clearing Niklas Cassel
2018-03-29 10:02 ` Kishon Vijay Abraham I
2018-03-28 11:50 ` [PATCH v5 11/12] PCI: designware-ep: Make dw_pcie_ep_reset_bar() handle 64-bit BARs properly Niklas Cassel
2018-03-28 13:14 ` Gustavo Pimentel [this message]
2018-03-29 10:03 ` Kishon Vijay Abraham I
2018-03-28 11:50 ` [PATCH v5 12/12] misc: pci_endpoint_test: Handle " Niklas Cassel
2018-03-29 13:52 ` [PATCH v5 00/12] PCI endpoint 64-bit BAR fixes Gustavo Pimentel
2018-04-02 19:39 ` Niklas Cassel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=71fe27b4-60ca-898e-e41c-5e93f9b44af2@synopsys.com \
--to=gustavo.pimentel@synopsys.com \
--cc=Joao.Pinto@synopsys.com \
--cc=bhelgaas@google.com \
--cc=cyrille.pitchen@free-electrons.com \
--cc=jingoohan1@gmail.com \
--cc=kishon@ti.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=lorenzo.pieralisi@arm.com \
--cc=niklas.cassel@axis.com \
--cc=niklass@axis.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).