linux-kernel - [PATCH v10 12/14] PCI: imx6: Add epc_features in imx6_pcie

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240205173335.1120469-13-Frank.Li@nxp.com>
Date: Mon,  5 Feb 2024 12:33:33 -0500
From: Frank Li <Frank.Li@....com>
To: lpieralisi@...nel.org
Cc: Frank.li@....com,
	bhelgaas@...gle.com,
	conor+dt@...nel.org,
	devicetree@...r.kernel.org,
	festevam@...il.com,
	helgaas@...nel.org,
	hongxing.zhu@....com,
	imx@...ts.linux.dev,
	kernel@...gutronix.de,
	krzysztof.kozlowski+dt@...aro.org,
	krzysztof.kozlowski@...aro.org,
	kw@...ux.com,
	l.stach@...gutronix.de,
	linux-arm-kernel@...ts.infradead.org,
	linux-imx@....com,
	linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org,
	manivannan.sadhasivam@...aro.org,
	robh@...nel.org,
	s.hauer@...gutronix.de,
	shawnguo@...nel.org
Subject: [PATCH v10 12/14] PCI: imx6: Add epc_features in imx6_pcie_drvdata

The i.MX EP exhibits variations in epc_features among different EP
configurations. This introduces the addition of epc_features in
imx6_pcie_drvdata to accommodate these differences. It's important to note
that there are no functional changes in this commit; instead, it lays the
groundwork for supporting i.MX95 EP functions.

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Signed-off-by: Frank Li <Frank.Li@....com>
---

Notes:
    Change from v7 to v8
    - Added  Manivannan Sadhasivam's review tag
    Change from v6 to v7
    - none
    Change from v5 to v6
    - add missed maxitems.
    - add comments about reuse linux,pci-domain as controller id.
    linux,pci-domain have not defined at PCI endpoint side.
    
    Change from v1 to v3
    - new patch at v3

 drivers/pci/controller/dwc/pci-imx6.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 9cc6802e93641..c2098e59fde1e 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -105,6 +105,7 @@ struct imx6_pcie_drvdata {
 	const u32 ltssm_mask;
 	const u32 mode_off[IMX6_PCIE_MAX_INSTANCES];
 	const u32 mode_mask[IMX6_PCIE_MAX_INSTANCES];
+	const struct pci_epc_features *epc_features;
 	int (*init_phy)(struct imx6_pcie *pcie);
 };
 
@@ -1052,7 +1053,10 @@ static const struct pci_epc_features imx8m_pcie_epc_features = {
 static const struct pci_epc_features*
 imx6_pcie_ep_get_features(struct dw_pcie_ep *ep)
 {
-	return &imx8m_pcie_epc_features;
+	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+	struct imx6_pcie *imx6_pcie = to_imx6_pcie(pci);
+
+	return imx6_pcie->drvdata->epc_features;
 }
 
 static const struct dw_pcie_ep_ops pcie_ep_ops = {
@@ -1532,6 +1536,7 @@ static const struct imx6_pcie_drvdata drvdata[] = {
 		.mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
 		.mode_off[1] = IOMUXC_GPR12,
 		.mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE,
+		.epc_features = &imx8m_pcie_epc_features,
 		.init_phy = imx8mq_pcie_init_phy,
 	},
 	[IMX8MM_EP] = {
@@ -1543,6 +1548,7 @@ static const struct imx6_pcie_drvdata drvdata[] = {
 		.clks_cnt = ARRAY_SIZE(imx8mm_clks),
 		.mode_off[0] = IOMUXC_GPR12,
 		.mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
+		.epc_features = &imx8m_pcie_epc_features,
 	},
 	[IMX8MP_EP] = {
 		.variant = IMX8MP_EP,
@@ -1553,6 +1559,7 @@ static const struct imx6_pcie_drvdata drvdata[] = {
 		.clks_cnt = ARRAY_SIZE(imx8mm_clks),
 		.mode_off[0] = IOMUXC_GPR12,
 		.mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
+		.epc_features = &imx8m_pcie_epc_features,
 	},
 };
 
-- 
2.34.1