--- zzzz-none-000/linux-3.10.107/arch/mips/ath79/pci.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/mips/ath79/pci.c	2021-02-04 17:41:59.000000000 +0000
@@ -13,6 +13,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/export.h>
 #include <linux/pci.h>
 #include <linux/resource.h>
 #include <linux/platform_device.h>
@@ -22,10 +23,13 @@
 #include "pci.h"
 
 static int (*ath79_pci_plat_dev_init)(struct pci_dev *dev);
-static const struct ath79_pci_irq *ath79_pci_irq_map __initdata;
-static unsigned ath79_pci_nr_irqs __initdata;
+static const struct ath79_pci_irq *ath79_pci_irq_map;
+static unsigned int ath79_pci_nr_irqs;
 
-static const struct ath79_pci_irq ar71xx_pci_irq_map[] __initconst = {
+static unsigned long (*__ath79_pci_swizzle_b)(unsigned long port);
+static unsigned long (*__ath79_pci_swizzle_w)(unsigned long port);
+
+static const struct ath79_pci_irq ar71xx_pci_irq_map[] = {
 	{
 		.slot	= 17,
 		.pin	= 1,
@@ -41,7 +45,7 @@
 	}
 };
 
-static const struct ath79_pci_irq ar724x_pci_irq_map[] __initconst = {
+static const struct ath79_pci_irq ar724x_pci_irq_map[] = {
 	{
 		.slot	= 0,
 		.pin	= 1,
@@ -49,7 +53,16 @@
 	}
 };
 
-static const struct ath79_pci_irq qca955x_pci_irq_map[] __initconst = {
+static const struct ath79_pci_irq qca953x_pci_irq_map[] = {
+	{
+		.bus	= 0,
+		.slot	= 0,
+		.pin	= 1,
+		.irq	= ATH79_PCI_IRQ(0),
+	},
+};
+
+static const struct ath79_pci_irq qca955x_pci_irq_map[] = {
 	{
 		.bus	= 0,
 		.slot	= 0,
@@ -64,7 +77,37 @@
 	},
 };
 
-int __init pcibios_map_irq(const struct pci_dev *dev, uint8_t slot, uint8_t pin)
+static const struct ath79_pci_irq qca956x_pci_irq_map[] = {
+	{
+		.bus    = 0,
+		.slot   = 0,
+		.pin    = 1,
+		.irq    = ATH79_PCI_IRQ(0),
+	},
+	{
+		.bus    = 1,
+		.slot   = 0,
+		.pin    = 1,
+		.irq    = ATH79_PCI_IRQ(1),
+	},
+};
+
+static const struct ath79_pci_irq qcn550x_pci_irq_map[] = {
+	{
+		.bus    = 0,
+		.slot   = 0,
+		.pin    = 1,
+		.irq    = ATH79_PCI_IRQ(0),
+	},
+	{
+		.bus    = 1,
+		.slot   = 0,
+		.pin    = 1,
+		.irq    = ATH79_PCI_IRQ(1),
+	},
+};
+
+int pcibios_map_irq(const struct pci_dev *dev, uint8_t slot, uint8_t pin)
 {
 	int irq = -1;
 	int i;
@@ -79,9 +122,18 @@
 			   soc_is_ar9344()) {
 			ath79_pci_irq_map = ar724x_pci_irq_map;
 			ath79_pci_nr_irqs = ARRAY_SIZE(ar724x_pci_irq_map);
+		} else if (soc_is_qca953x()) {
+			ath79_pci_irq_map = qca953x_pci_irq_map;
+			ath79_pci_nr_irqs = ARRAY_SIZE(qca953x_pci_irq_map);
 		} else if (soc_is_qca955x()) {
 			ath79_pci_irq_map = qca955x_pci_irq_map;
 			ath79_pci_nr_irqs = ARRAY_SIZE(qca955x_pci_irq_map);
+		} else if (soc_is_qca956x()) {
+			ath79_pci_irq_map = qca956x_pci_irq_map;
+			ath79_pci_nr_irqs = ARRAY_SIZE(qca956x_pci_irq_map);
+		} else if (soc_is_qcn550x()) {
+			ath79_pci_irq_map = qcn550x_pci_irq_map;
+			ath79_pci_nr_irqs = ARRAY_SIZE(qcn550x_pci_irq_map);
 		} else {
 			pr_crit("pci %s: invalid irq map\n",
 				pci_name((struct pci_dev *) dev));
@@ -198,7 +250,7 @@
 	res[3].end = mem_base + mem_size - 1;
 
 	res[4].name = "io_base";
-	res[4].flags = IORESOURCE_IO;
+	res[4].flags = IORESOURCE_MEM;
 	res[4].start = io_base;
 	res[4].end = io_base;
 
@@ -212,12 +264,50 @@
 	return pdev;
 }
 
+static inline bool ar71xx_is_pci_addr(unsigned long port)
+{
+	unsigned long phys = CPHYSADDR(port);
+
+	return (phys >= AR71XX_PCI_MEM_BASE &&
+		phys < AR71XX_PCI_MEM_BASE + AR71XX_PCI_MEM_SIZE);
+}
+
+static unsigned long ar71xx_pci_swizzle_b(unsigned long port)
+{
+	return ar71xx_is_pci_addr(port) ? port ^ 3 : port;
+}
+
+static unsigned long ar71xx_pci_swizzle_w(unsigned long port)
+{
+	return ar71xx_is_pci_addr(port) ? port ^ 2 : port;
+}
+
+unsigned long ath79_pci_swizzle_b(unsigned long port)
+{
+	if (__ath79_pci_swizzle_b)
+		return __ath79_pci_swizzle_b(port);
+
+	return port;
+}
+EXPORT_SYMBOL(ath79_pci_swizzle_b);
+
+unsigned long ath79_pci_swizzle_w(unsigned long port)
+{
+	if (__ath79_pci_swizzle_w)
+		return __ath79_pci_swizzle_w(port);
+
+	return port;
+}
+EXPORT_SYMBOL(ath79_pci_swizzle_w);
+
 int __init ath79_register_pci(void)
 {
 	struct platform_device *pdev = NULL;
 
 	if (soc_is_ar71xx()) {
 		pdev = ath79_register_pci_ar71xx();
+		__ath79_pci_swizzle_b = ar71xx_pci_swizzle_b;
+		__ath79_pci_swizzle_w = ar71xx_pci_swizzle_w;
 	} else if (soc_is_ar724x()) {
 		pdev = ath79_register_pci_ar724x(-1,
 						 AR724X_PCI_CFG_BASE,
@@ -243,6 +333,15 @@
 						 AR724X_PCI_MEM_SIZE,
 						 0,
 						 ATH79_IP2_IRQ(0));
+	} else if (soc_is_qca9533()) {
+		pdev = ath79_register_pci_ar724x(0,
+						 QCA953X_PCI_CFG_BASE0,
+						 QCA953X_PCI_CTRL_BASE0,
+						 QCA953X_PCI_CRP_BASE0,
+						 QCA953X_PCI_MEM_BASE0,
+						 QCA953X_PCI_MEM_SIZE,
+						 0,
+						 ATH79_IP2_IRQ(0));
 	} else if (soc_is_qca9558()) {
 		pdev = ath79_register_pci_ar724x(0,
 						 QCA955X_PCI_CFG_BASE0,
@@ -261,6 +360,24 @@
 						 QCA955X_PCI_MEM_SIZE,
 						 1,
 						 ATH79_IP3_IRQ(2));
+	} else if (soc_is_qca956x()) {
+		pdev = ath79_register_pci_ar724x(0,
+						 QCA956X_PCI_CFG_BASE1,
+						 QCA956X_PCI_CTRL_BASE1,
+						 QCA956X_PCI_CRP_BASE1,
+						 QCA956X_PCI_MEM_BASE1,
+						 QCA956X_PCI_MEM_SIZE,
+						 1,
+						 ATH79_IP3_IRQ(2));
+	} else if (soc_is_qcn550x()) {
+		pdev = ath79_register_pci_ar724x(0,
+						 QCN550X_PCI_CFG_BASE1,
+						 QCN550X_PCI_CTRL_BASE1,
+						 QCN550X_PCI_CRP_BASE1,
+						 QCN550X_PCI_MEM_BASE1,
+						 QCN550X_PCI_MEM_SIZE,
+						 1,
+						 ATH79_IP3_IRQ(2));
 	} else {
 		/* No PCI support */
 		return -ENODEV;