commit 0e64123141f3854e695eb4924d82b52856691466
author Olivier Deprez <olivier.deprez@arm.com> Thu Sep 23 10:07:05 2021 +0200
committer Olivier Deprez <olivier.deprez@arm.com> Tue Oct 26 16:50:53 2021 +0100
tree 9f79e140db584f9b107f4e33373a0075983df1f4
parent 98854e9675dc7d951fa9c4e10d9c9d230c54bde6

Update Linux to v5.4.148

Sourced from [1]

[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz

Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>

drivers/pci/controller/pci-mvebu.c

diff --git a/drivers/pci/controller/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c
index d3a0419..5a2483e 100644
--- a/drivers/pci/controller/pci-mvebu.c
+++ b/drivers/pci/controller/pci-mvebu.c
@@ -105,6 +105,7 @@
 	struct mvebu_pcie_window memwin;
 	struct mvebu_pcie_window iowin;
 	u32 saved_pcie_stat;
+	struct resource regs;
 };
 
 static inline void mvebu_writel(struct mvebu_pcie_port *port, u32 val, u32 reg)
@@ -149,7 +150,9 @@
 
 /*
  * Setup PCIE BARs and Address Decode Wins:
- * BAR[0,2] -> disabled, BAR[1] -> covers all DRAM banks
+ * BAR[0] -> internal registers (needed for MSI)
+ * BAR[1] -> covers all DRAM banks
+ * BAR[2] -> Disabled
  * WIN[0-3] -> DRAM bank[0-3]
  */
 static void mvebu_pcie_setup_wins(struct mvebu_pcie_port *port)
@@ -203,6 +206,12 @@
 	mvebu_writel(port, 0, PCIE_BAR_HI_OFF(1));
 	mvebu_writel(port, ((size - 1) & 0xffff0000) | 1,
 		     PCIE_BAR_CTRL_OFF(1));
+
+	/*
+	 * Point BAR[0] to the device's internal registers.
+	 */
+	mvebu_writel(port, round_down(port->regs.start, SZ_1M), PCIE_BAR_LO_OFF(0));
+	mvebu_writel(port, 0, PCIE_BAR_HI_OFF(0));
 }
 
 static void mvebu_pcie_setup_hw(struct mvebu_pcie_port *port)
@@ -708,14 +717,13 @@
 					      struct device_node *np,
 					      struct mvebu_pcie_port *port)
 {
-	struct resource regs;
 	int ret = 0;
 
-	ret = of_address_to_resource(np, 0, &regs);
+	ret = of_address_to_resource(np, 0, &port->regs);
 	if (ret)
 		return ERR_PTR(ret);
 
-	return devm_ioremap_resource(&pdev->dev, &regs);
+	return devm_ioremap_resource(&pdev->dev, &port->regs);
 }
 
 #define DT_FLAGS_TO_TYPE(flags)       (((flags) >> 24) & 0x03)