bcm63xx: make smp kernels boot on older SoCs

Enhance BMIPS support so SMP kernels work on older chips.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 37099

1 files changed, 169 insertions, 0 deletions

diff --git a/target/linux/brcm63xx/patches-3.9/113-MIPS-BCM63XX-add-OHCI-EHCI-configuration-bits-to-com.patch b/target/linux/brcm63xx/patches-3.9/113-MIPS-BCM63XX-add-OHCI-EHCI-configuration-bits-to-com.patch
new file mode 100644
index 0000000000..40bbe083a7
--- /dev/null
+++ b/target/linux/brcm63xx/patches-3.9/113-MIPS-BCM63XX-add-OHCI-EHCI-configuration-bits-to-com.patch
@@ -0,0 +1,169 @@
+From 28758a9da77954ed323f86123ef448c6a563c037 Mon Sep 17 00:00:00 2001
+From: Florian Fainelli <florian@openwrt.org>
+Date: Mon, 28 Jan 2013 20:06:22 +0100
+Subject: [PATCH 04/11] MIPS: BCM63XX: add OHCI/EHCI configuration bits to
+ common USB code
+
+This patch updates the common USB code touching the USB private
+registers with the specific bits to properly enable OHCI and EHCI
+controllers on BCM63xx SoCs. As a result we now need to protect access
+to Read Modify Write sequences using a spinlock because we cannot
+guarantee that any of the exposed helper will not be called
+concurrently.
+
+Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
+Signed-off-by: Florian Fainelli <florian@openwrt.org>
+---
+ arch/mips/bcm63xx/usb-common.c                     |   97 ++++++++++++++++++++
+ .../include/asm/mach-bcm63xx/bcm63xx_usb_priv.h    |    2 +
+ 2 files changed, 99 insertions(+)
+
+--- a/arch/mips/bcm63xx/usb-common.c
++++ b/arch/mips/bcm63xx/usb-common.c
+@@ -5,10 +5,12 @@
+  * License.  See the file "COPYING" in the main directory of this archive
+  * for more details.
+  *
++ * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
+  * Copyright (C) 2012 Kevin Cernekee <cernekee@gmail.com>
+  * Copyright (C) 2012 Broadcom Corporation
+  *
+  */
++#include <linux/spinlock.h>
+ #include <linux/export.h>
+ 
+ #include <bcm63xx_cpu.h>
+@@ -16,9 +18,14 @@
+ #include <bcm63xx_io.h>
+ #include <bcm63xx_usb_priv.h>
+ 
++static DEFINE_SPINLOCK(usb_priv_reg_lock);
++
+ void bcm63xx_usb_priv_select_phy_mode(u32 portmask, bool is_device)
+ {
+ 	u32 val;
++	unsigned long flags;
++
++	spin_lock_irqsave(&usb_priv_reg_lock, flags);
+ 
+ 	val = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_UTMI_CTL_6368_REG);
+ 	if (is_device) {
+@@ -36,12 +43,17 @@ void bcm63xx_usb_priv_select_phy_mode(u3
+ 	else
+ 		val &= ~USBH_PRIV_SWAP_USBD_MASK;
+ 	bcm_rset_writel(RSET_USBH_PRIV, val, USBH_PRIV_SWAP_6368_REG);
++
++	spin_unlock_irqrestore(&usb_priv_reg_lock, flags);
+ }
+ EXPORT_SYMBOL(bcm63xx_usb_priv_select_phy_mode);
+ 
+ void bcm63xx_usb_priv_select_pullup(u32 portmask, bool is_on)
+ {
+ 	u32 val;
++	unsigned long flags;
++
++	spin_lock_irqsave(&usb_priv_reg_lock, flags);
+ 
+ 	val = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_UTMI_CTL_6368_REG);
+ 	if (is_on)
+@@ -49,5 +61,90 @@ void bcm63xx_usb_priv_select_pullup(u32
+ 	else
+ 		val |= (portmask << USBH_PRIV_UTMI_CTL_NODRIV_SHIFT);
+ 	bcm_rset_writel(RSET_USBH_PRIV, val, USBH_PRIV_UTMI_CTL_6368_REG);
++
++	spin_unlock_irqrestore(&usb_priv_reg_lock, flags);
+ }
+ EXPORT_SYMBOL(bcm63xx_usb_priv_select_pullup);
++
++/* The following array represents the meaning of the DESC/DATA
++ * endian swapping with respect to the CPU configured endianness
++ *
++ * DATA	ENDN	mmio	descriptor
++ * 0	0	BE	invalid
++ * 0	1	BE	LE
++ * 1	0	BE	BE
++ * 1	1	BE	invalid
++ *
++ * Since BCM63XX SoCs are configured to be in big-endian mode
++ * we want configuration at line 3.
++ */
++void bcm63xx_usb_priv_ohci_cfg_set(void)
++{
++	u32 reg;
++	unsigned long flags;
++
++	spin_lock_irqsave(&usb_priv_reg_lock, flags);
++
++	if (BCMCPU_IS_6348())
++		bcm_rset_writel(RSET_OHCI_PRIV, 0, OHCI_PRIV_REG);
++	else if (BCMCPU_IS_6358()) {
++		reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6358_REG);
++		reg &= ~USBH_PRIV_SWAP_OHCI_ENDN_MASK;
++		reg |= USBH_PRIV_SWAP_OHCI_DATA_MASK;
++		bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6358_REG);
++		/*
++		 * The magic value comes for the original vendor BSP
++		 * and is needed for USB to work. Datasheet does not
++		 * help, so the magic value is used as-is.
++		 */
++		bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020,
++				USBH_PRIV_TEST_6358_REG);
++
++	} else if (BCMCPU_IS_6328() || BCMCPU_IS_6362() || BCMCPU_IS_6368()) {
++		reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6368_REG);
++		reg &= ~USBH_PRIV_SWAP_OHCI_ENDN_MASK;
++		reg |= USBH_PRIV_SWAP_OHCI_DATA_MASK;
++		bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6368_REG);
++
++		reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SETUP_6368_REG);
++		reg |= USBH_PRIV_SETUP_IOC_MASK;
++		bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SETUP_6368_REG);
++	}
++
++	spin_unlock_irqrestore(&usb_priv_reg_lock, flags);
++}
++
++void bcm63xx_usb_priv_ehci_cfg_set(void)
++{
++	u32 reg;
++	unsigned long flags;
++
++	spin_lock_irqsave(&usb_priv_reg_lock, flags);
++
++	if (BCMCPU_IS_6358()) {
++		reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6358_REG);
++		reg &= ~USBH_PRIV_SWAP_EHCI_ENDN_MASK;
++		reg |= USBH_PRIV_SWAP_EHCI_DATA_MASK;
++		bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6358_REG);
++
++		/*
++		 * The magic value comes for the original vendor BSP
++		 * and is needed for USB to work. Datasheet does not
++		 * help, so the magic value is used as-is.
++		 */
++		bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020,
++				USBH_PRIV_TEST_6358_REG);
++
++	} else if (BCMCPU_IS_6328() || BCMCPU_IS_6362() || BCMCPU_IS_6368()) {
++		reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6368_REG);
++		reg &= ~USBH_PRIV_SWAP_EHCI_ENDN_MASK;
++		reg |= USBH_PRIV_SWAP_EHCI_DATA_MASK;
++		bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6368_REG);
++
++		reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SETUP_6368_REG);
++		reg |= USBH_PRIV_SETUP_IOC_MASK;
++		bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SETUP_6368_REG);
++	}
++
++	spin_unlock_irqrestore(&usb_priv_reg_lock, flags);
++}
+--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_usb_priv.h
++++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_usb_priv.h
+@@ -5,5 +5,7 @@
+ 
+ void bcm63xx_usb_priv_select_phy_mode(u32 portmask, bool is_device);
+ void bcm63xx_usb_priv_select_pullup(u32 portmask, bool is_on);
++void bcm63xx_usb_priv_ohci_cfg_set(void);
++void bcm63xx_usb_priv_ehci_cfg_set(void);
+ 
+ #endif /* BCM63XX_USB_PRIV_H_ */