From: "Pali Rohár" <pali@kernel.org>
To: "Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Bjorn Helgaas" <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v2] PCI: aardvark: Add support for PCI Bridge Subsystem Vendor ID on emulated bridge
Date: Tue, 12 Jul 2022 00:59:15 +0200 [thread overview]
Message-ID: <20220711225915.13896-1-pali@kernel.org> (raw)
In-Reply-To: <20220711221823.12154-1-pali@kernel.org>
Register with Subsystem Device/Vendor ID is at offset 0x2c. Export is via
emulated bridge.
After this change Subsystem ID is visible in lspci output at line:
Capabilities: [40] Subsystem
Signed-off-by: Pali Rohár <pali@kernel.org>
---
Changes in v2:
* Fix wrong rebase, do not add PCIE_CORE_EXP_ROM_BAR_REG
---
drivers/pci/controller/pci-aardvark.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c
index 74511f015168..060936ef01fe 100644
--- a/drivers/pci/controller/pci-aardvark.c
+++ b/drivers/pci/controller/pci-aardvark.c
@@ -32,6 +32,7 @@
#define PCIE_CORE_DEV_ID_REG 0x0
#define PCIE_CORE_CMD_STATUS_REG 0x4
#define PCIE_CORE_DEV_REV_REG 0x8
+#define PCIE_CORE_SSDEV_ID_REG 0x2c
#define PCIE_CORE_PCIEXP_CAP 0xc0
#define PCIE_CORE_ERR_CAPCTL_REG 0x118
#define PCIE_CORE_ERR_CAPCTL_ECRC_CHK_TX BIT(5)
@@ -982,6 +983,8 @@ static int advk_sw_pci_bridge_init(struct advk_pcie *pcie)
/* Indicates supports for Completion Retry Status */
bridge->pcie_conf.rootcap = cpu_to_le16(PCI_EXP_RTCAP_CRSVIS);
+ bridge->subsystem_vendor_id = advk_readl(pcie, PCIE_CORE_SSDEV_ID_REG) & 0xffff;
+ bridge->subsystem_id = advk_readl(pcie, PCIE_CORE_SSDEV_ID_REG) >> 16;
bridge->has_pcie = true;
bridge->data = pcie;
bridge->ops = &advk_pci_bridge_emul_ops;
--
2.20.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-07-11 23:01 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-11 22:18 [PATCH] PCI: aardvark: Add support for PCI Bridge Subsystem Vendor ID on emulated bridge Pali Rohár
2022-07-11 22:59 ` Pali Rohár [this message]
2022-08-29 9:31 ` [PATCH v2] " Lorenzo Pieralisi
2022-08-29 9:34 ` Pali Rohár
2022-09-16 12:44 ` Lorenzo Pieralisi
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=20220711225915.13896-1-pali@kernel.org \
--to=pali@kernel.org \
--cc=bhelgaas@google.com \
--cc=kw@linux.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=lpieralisi@kernel.org \
--cc=robh@kernel.org \
--cc=thomas.petazzoni@bootlin.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).