X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/87d726d0f1edcc452a12c0022d6a35939b0dcadc..de73b57f12eb068f9dab72fda7794afe023d07e2:/target/linux/ar71xx/files/arch/mips/pci/pci-ar724x.c

diff --git a/target/linux/ar71xx/files/arch/mips/pci/pci-ar724x.c b/target/linux/ar71xx/files/arch/mips/pci/pci-ar724x.c
index 9d37561aa..57daa0614 100644
--- a/target/linux/ar71xx/files/arch/mips/pci/pci-ar724x.c
+++ b/target/linux/ar71xx/files/arch/mips/pci/pci-ar724x.c
@@ -30,40 +30,11 @@
 
 static void __iomem *ar724x_pci_localcfg_base;
 static void __iomem *ar724x_pci_devcfg_base;
+static void __iomem *ar724x_pci_ctrl_base;
 static int ar724x_pci_fixup_enable;
 
 static DEFINE_SPINLOCK(ar724x_pci_lock);
 
-static inline void ar724x_pci_wr(unsigned reg, u32 val)
-{
-	void __iomem *base;
-
-	base = ioremap_nocache(AR724X_PCI_CTRL_BASE, AR724X_PCI_CTRL_SIZE);
-	__raw_writel(val, base + reg);
-	(void) __raw_readl(base + reg);
-	iounmap(base);
-}
-
-static inline void ar724x_pci_wr_nf(unsigned reg, u32 val)
-{
-	void __iomem *base;
-
-	base = ioremap_nocache(AR724X_PCI_CTRL_BASE, AR724X_PCI_CTRL_SIZE);
-	__raw_writel(val, base + reg);
-	iounmap(base);
-}
-
-static inline u32 ar724x_pci_rr(unsigned reg)
-{
-	void __iomem *base;
-	u32 ret;
-
-	base = ioremap_nocache(AR724X_PCI_CTRL_BASE, AR724X_PCI_CTRL_SIZE);
-	ret = __raw_readl(base + reg);
-	iounmap(base);
-	return ret;
-}
-
 static void ar724x_pci_read(void __iomem *base, int where, int size, u32 *value)
 {
 	unsigned long flags;
@@ -139,8 +110,11 @@ static int ar724x_pci_read_config(struct pci_bus *bus, unsigned int devfn,
 	 * WAR for BAR issue - We are unable to access the PCI device space
 	 * if we set the BAR with proper base address
 	 */
-	if ((where == 0x10) && (size == 4))
-		ar724x_pci_write(ar724x_pci_devcfg_base, where, size, 0xffff);
+	if ((where == 0x10) && (size == 4)) {
+		u32 val;
+		val = (ar71xx_soc == AR71XX_SOC_AR7240) ? 0xffff : 0x1000ffff;
+		ar724x_pci_write(ar724x_pci_devcfg_base, where, size, val);
+	}
 
 	return PCIBIOS_SUCCESSFUL;
 }
@@ -246,6 +220,7 @@ static void __init ar724x_pci_reset(void)
 
 static int __init ar724x_pci_setup(void)
 {
+	void __iomem *base = ar724x_pci_ctrl_base;
 	u32 t;
 
 	/* setup COMMAND register */
@@ -256,33 +231,47 @@ static int __init ar724x_pci_setup(void)
 	ar724x_pci_write(ar724x_pci_localcfg_base, 0x20, 4, 0x1ff01000);
 	ar724x_pci_write(ar724x_pci_localcfg_base, 0x24, 4, 0x1ff01000);
 
-	t = ar724x_pci_rr(AR724X_PCI_REG_RESET);
+	t = __raw_readl(base + AR724X_PCI_REG_RESET);
 	if (t != 0x7) {
 		udelay(100000);
-		ar724x_pci_wr_nf(AR724X_PCI_REG_RESET, 0);
+		__raw_writel(0, base + AR724X_PCI_REG_RESET);
 		udelay(100);
-		ar724x_pci_wr_nf(AR724X_PCI_REG_RESET, 4);
+		__raw_writel(4, base + AR724X_PCI_REG_RESET);
 		udelay(100000);
 	}
 
-	ar724x_pci_wr(AR724X_PCI_REG_APP, AR724X_PCI_APP_LTSSM_ENABLE);
+	if (ar71xx_soc == AR71XX_SOC_AR7240)
+		t = AR724X_PCI_APP_LTSSM_ENABLE;
+	else
+		t = 0x1ffc1;
+	__raw_writel(t, base + AR724X_PCI_REG_APP);
+	/* flush write */
+	(void) __raw_readl(base + AR724X_PCI_REG_APP);
 	udelay(1000);
 
-	t = ar724x_pci_rr(AR724X_PCI_REG_APP);
-	if ((t & AR724X_PCI_APP_LTSSM_ENABLE) == 0x0) {
+	t = __raw_readl(base + AR724X_PCI_REG_RESET);
+	if ((t & AR724X_PCI_RESET_LINK_UP) == 0x0) {
 		printk(KERN_WARNING "PCI: no PCIe module found\n");
 		return -ENODEV;
 	}
 
+	if (ar71xx_soc == AR71XX_SOC_AR7241 ||
+	    ar71xx_soc == AR71XX_SOC_AR7242) {
+		t = __raw_readl(base + AR724X_PCI_REG_APP);
+		t |= BIT(16);
+		__raw_writel(t, base + AR724X_PCI_REG_APP);
+	}
+
 	return 0;
 }
 
 static void ar724x_pci_irq_handler(unsigned int irq, struct irq_desc *desc)
 {
+	void __iomem *base = ar724x_pci_ctrl_base;
 	u32 pending;
 
-	pending = ar724x_pci_rr(AR724X_PCI_REG_INT_STATUS) &
-		  ar724x_pci_rr(AR724X_PCI_REG_INT_MASK);
+	pending = __raw_readl(base + AR724X_PCI_REG_INT_STATUS) &
+		  __raw_readl(base + AR724X_PCI_REG_INT_MASK);
 
 	if (pending & AR724X_PCI_INT_DEV0)
 		generic_handle_irq(AR71XX_PCI_IRQ_DEV0);
@@ -291,47 +280,54 @@ static void ar724x_pci_irq_handler(unsigned int irq, struct irq_desc *desc)
 		spurious_interrupt();
 }
 
-static void ar724x_pci_irq_unmask(unsigned int irq)
+static void ar724x_pci_irq_unmask(struct irq_data *d)
 {
-	switch (irq) {
+	void __iomem *base = ar724x_pci_ctrl_base;
+	u32 t;
+
+	switch (d->irq) {
 	case AR71XX_PCI_IRQ_DEV0:
-		irq -= AR71XX_PCI_IRQ_BASE;
-		ar724x_pci_wr(AR724X_PCI_REG_INT_MASK,
-			      ar724x_pci_rr(AR724X_PCI_REG_INT_MASK) |
-					    AR724X_PCI_INT_DEV0);
+		t = __raw_readl(base + AR724X_PCI_REG_INT_MASK);
+		__raw_writel(t | AR724X_PCI_INT_DEV0,
+			     base + AR724X_PCI_REG_INT_MASK);
 		/* flush write */
-		ar724x_pci_rr(AR724X_PCI_REG_INT_MASK);
+		(void) __raw_readl(base + AR724X_PCI_REG_INT_MASK);
 	}
 }
 
-static void ar724x_pci_irq_mask(unsigned int irq)
+static void ar724x_pci_irq_mask(struct irq_data *d)
 {
-	switch (irq) {
+	void __iomem *base = ar724x_pci_ctrl_base;
+	u32 t;
+
+	switch (d->irq) {
 	case AR71XX_PCI_IRQ_DEV0:
-		irq -= AR71XX_PCI_IRQ_BASE;
-		ar724x_pci_wr(AR724X_PCI_REG_INT_MASK,
-			      ar724x_pci_rr(AR724X_PCI_REG_INT_MASK) &
-					    ~AR724X_PCI_INT_DEV0);
+		t = __raw_readl(base + AR724X_PCI_REG_INT_MASK);
+		__raw_writel(t & ~AR724X_PCI_INT_DEV0,
+			     base + AR724X_PCI_REG_INT_MASK);
+
 		/* flush write */
-		ar724x_pci_rr(AR724X_PCI_REG_INT_MASK);
+		(void) __raw_readl(base + AR724X_PCI_REG_INT_MASK);
+
+		t = __raw_readl(base + AR724X_PCI_REG_INT_STATUS);
+		__raw_writel(t | AR724X_PCI_INT_DEV0,
+			     base + AR724X_PCI_REG_INT_STATUS);
 
-		ar724x_pci_wr(AR724X_PCI_REG_INT_STATUS,
-			      ar724x_pci_rr(AR724X_PCI_REG_INT_STATUS) |
-					    AR724X_PCI_INT_DEV0);
 		/* flush write */
-		ar724x_pci_rr(AR724X_PCI_REG_INT_STATUS);
+		(void) __raw_readl(base + AR724X_PCI_REG_INT_STATUS);
 	}
 }
 
 static struct irq_chip ar724x_pci_irq_chip = {
 	.name		= "AR724X PCI ",
-	.mask		= ar724x_pci_irq_mask,
-	.unmask		= ar724x_pci_irq_unmask,
-	.mask_ack	= ar724x_pci_irq_mask,
+	.irq_mask	= ar724x_pci_irq_mask,
+	.irq_unmask	= ar724x_pci_irq_unmask,
+	.irq_mask_ack	= ar724x_pci_irq_mask,
 };
 
-static void __init ar724x_pci_irq_init(void)
+static void __init ar724x_pci_irq_init(int irq)
 {
+	void __iomem *base = ar724x_pci_ctrl_base;
 	u32 t;
 	int i;
 
@@ -341,37 +337,53 @@ static void __init ar724x_pci_irq_init(void)
 		return;
 	}
 
-	ar724x_pci_wr(AR724X_PCI_REG_INT_MASK, 0);
-	ar724x_pci_wr(AR724X_PCI_REG_INT_STATUS, 0);
+	__raw_writel(0, base + AR724X_PCI_REG_INT_MASK);
+	__raw_writel(0, base + AR724X_PCI_REG_INT_STATUS);
 
 	for (i = AR71XX_PCI_IRQ_BASE;
-	     i < AR71XX_PCI_IRQ_BASE + AR71XX_PCI_IRQ_COUNT; i++) {
-		irq_desc[i].status = IRQ_DISABLED;
-		set_irq_chip_and_handler(i, &ar724x_pci_irq_chip,
+	     i < AR71XX_PCI_IRQ_BASE + AR71XX_PCI_IRQ_COUNT; i++)
+		irq_set_chip_and_handler(i, &ar724x_pci_irq_chip,
 					 handle_level_irq);
-	}
 
-	set_irq_chained_handler(AR71XX_CPU_IRQ_IP2, ar724x_pci_irq_handler);
+	irq_set_chained_handler(irq, ar724x_pci_irq_handler);
 }
 
-int __init ar724x_pcibios_init(void)
+int __init ar724x_pcibios_init(int irq)
 {
-	int ret;
+	int ret = -ENOMEM;
 
 	ar724x_pci_localcfg_base = ioremap_nocache(AR724X_PCI_CRP_BASE,
 						   AR724X_PCI_CRP_SIZE);
+	if (ar724x_pci_localcfg_base == NULL)
+		goto err;
 
 	ar724x_pci_devcfg_base = ioremap_nocache(AR724X_PCI_CFG_BASE,
 						 AR724X_PCI_CFG_SIZE);
+	if (ar724x_pci_devcfg_base == NULL)
+		goto err_unmap_localcfg;
+
+	ar724x_pci_ctrl_base = ioremap_nocache(AR724X_PCI_CTRL_BASE,
+					       AR724X_PCI_CTRL_SIZE);
+	if (ar724x_pci_ctrl_base == NULL)
+		goto err_unmap_devcfg;
 
 	ar724x_pci_reset();
 	ret = ar724x_pci_setup();
 	if (ret)
-		return ret;
+		goto err_unmap_ctrl;
 
 	ar724x_pci_fixup_enable = 1;
-	ar724x_pci_irq_init();
+	ar724x_pci_irq_init(irq);
 	register_pci_controller(&ar724x_pci_controller);
 
 	return 0;
+
+err_unmap_ctrl:
+	iounmap(ar724x_pci_ctrl_base);
+err_unmap_devcfg:
+	iounmap(ar724x_pci_devcfg_base);
+err_unmap_localcfg:
+	iounmap(ar724x_pci_localcfg_base);
+err:
+	return ret;
 }