From: Serge Semin <Sergey.Semin@baikalelectronics.ru>
To: "Jingoo Han" <jingoohan1@gmail.com>,
"Gustavo Pimentel" <gustavo.pimentel@synopsys.com>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Lorenzo Pieralisi" <lorenzo.pieralisi@arm.com>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>
Cc: Serge Semin <Sergey.Semin@baikalelectronics.ru>,
Serge Semin <fancer.lancer@gmail.com>,
Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>,
Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru>,
Frank Li <Frank.Li@nxp.com>,
Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>,
Rob Herring <robh+dt@kernel.org>, <linux-pci@vger.kernel.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH v2 04/17] PCI: dwc: Detect iATU settings after getting "addr_space" resource
Date: Wed, 4 May 2022 00:46:25 +0300 [thread overview]
Message-ID: <20220503214638.1895-5-Sergey.Semin@baikalelectronics.ru> (raw)
In-Reply-To: <20220503214638.1895-1-Sergey.Semin@baikalelectronics.ru>
The iATU detection procedure was introduced in the commit 281f1f99cf3a
("PCI: dwc: Detect number of iATU windows"). A bit later the procedure
execution was moved to Host/EP-specific methods in the framework of commit
8bcca2658558 ("PCI: dwc: Move iATU detection earlier"). The later
modification wasn't done in the most optimal way since the "addr_space"
CSR region resource doesn't depend on anything detected in the
dw_pcie_iatu_detect() method. Thus the detection can be postponed to be
executed after the resource request which can fail and make the detection
pointless. It will be also helpful for the dw_pcie_ep_init() method
readability since we are about to add the IP-core version and eDMA module
(a bit later) detection procedures.
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
---
Changelog v2:
- This is a new patch added on v2 iteration of the series.
---
drivers/pci/controller/dwc/pcie-designware-ep.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index 7ad349c32082..c152021d0bf6 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -708,8 +708,6 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep)
}
}
- dw_pcie_iatu_detect(pci);
-
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "addr_space");
if (!res)
return -EINVAL;
@@ -717,6 +715,8 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep)
ep->phys_base = res->start;
ep->addr_size = resource_size(res);
+ dw_pcie_iatu_detect(pci);
+
ep->ib_window_map = devm_kcalloc(dev,
BITS_TO_LONGS(pci->num_ib_windows),
sizeof(long),
--
2.35.1
next prev parent reply other threads:[~2022-05-03 21:47 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-03 21:46 [PATCH v2 00/17] PCI: dwc: Add dma-ranges/YAML-schema/Baikal-T1 support Serge Semin
2022-05-03 21:46 ` [PATCH v2 01/17] dt-bindings: PCI: dwc: Define common and native DT bindings Serge Semin
2022-05-16 20:11 ` Rob Herring
2022-05-19 10:26 ` Serge Semin
2022-05-03 21:46 ` [PATCH v2 02/17] dt-bindings: PCI: dwc: Add Baikal-T1 PCIe Root Port bindings Serge Semin
2022-05-03 21:46 ` [PATCH v2 03/17] PCI: dwc: Add more verbose link-up message Serge Semin
2022-05-16 20:18 ` Rob Herring
2022-05-03 21:46 ` Serge Semin [this message]
2022-05-16 20:21 ` [PATCH v2 04/17] PCI: dwc: Detect iATU settings after getting "addr_space" resource Rob Herring
2022-05-03 21:46 ` [PATCH v2 05/17] PCI: dwc: Convert to using native IP-core versions representation Serge Semin
2022-05-16 20:30 ` Rob Herring
2022-05-20 9:29 ` Serge Semin
2022-05-20 15:06 ` Rob Herring
2022-05-20 16:08 ` Serge Semin
2022-05-16 20:31 ` Rob Herring
2022-05-03 21:46 ` [PATCH v2 06/17] PCI: dwc: Add IP-core version detection procedure Serge Semin
2022-05-16 20:32 ` Rob Herring
2022-05-03 21:46 ` [PATCH v2 07/17] PCI: dwc: Introduce Synopsys IP-core versions/types interface Serge Semin
2022-05-16 20:33 ` Rob Herring
2022-05-03 21:46 ` [PATCH v2 08/17] PCI: dwc: Add host de-initialization callback Serge Semin
2022-05-16 20:48 ` Rob Herring
2022-05-20 10:20 ` Serge Semin
2022-05-03 21:46 ` [PATCH v2 09/17] PCI: dwc: Drop inbound iATU types enumeration - dw_pcie_as_type Serge Semin
2022-05-03 21:46 ` [PATCH v2 10/17] PCI: dwc: Drop iATU regions enumeration - dw_pcie_region_type Serge Semin
2022-05-16 20:49 ` Rob Herring
2022-05-03 21:46 ` [PATCH v2 11/17] PCI: dwc: Simplify in/outbound iATU setup methods Serge Semin
2022-05-12 14:01 ` Manivannan Sadhasivam
2022-05-12 19:22 ` Serge Semin
2022-05-03 21:46 ` [PATCH v2 12/17] PCI: dwc: Add iATU regions size detection procedure Serge Semin
2022-05-16 21:01 ` Rob Herring
2022-05-03 21:46 ` [PATCH v2 13/17] PCI: dwc: Verify in/out regions against iATU constraints Serge Semin
2022-05-16 21:07 ` Rob Herring
2022-05-03 21:46 ` [PATCH v2 14/17] PCI: dwc: Check iATU in/outbound ranges setup methods status Serge Semin
2022-05-16 21:35 ` Rob Herring
2022-05-20 10:36 ` Serge Semin
2022-05-03 21:46 ` [PATCH v2 15/17] PCI: dwc: Introduce dma-ranges property support for RC-host Serge Semin
2022-05-12 13:57 ` Manivannan Sadhasivam
2022-05-12 19:41 ` Serge Semin
2022-05-17 17:20 ` Manivannan Sadhasivam
2022-05-18 19:26 ` Serge Semin
2022-05-19 7:40 ` Manivannan Sadhasivam
2022-05-19 10:52 ` Serge Semin
2022-05-19 15:21 ` Manivannan Sadhasivam
2022-05-20 18:21 ` Serge Semin
2022-05-16 21:42 ` Rob Herring
2022-05-03 21:46 ` [PATCH v2 16/17] PCI: dwc: Introduce generic platform clocks and resets sets Serge Semin
2022-05-16 22:29 ` Rob Herring
2022-05-20 16:02 ` Serge Semin
2022-05-03 21:46 ` [PATCH v2 17/17] PCI: dwc: Add Baikal-T1 PCIe controller support Serge Semin
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