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-rw-r--r--target/linux/brcm47xx/patches-3.0/0005-bcma-add-mips-driver.patch402
1 files changed, 402 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.0/0005-bcma-add-mips-driver.patch b/target/linux/brcm47xx/patches-3.0/0005-bcma-add-mips-driver.patch
new file mode 100644
index 0000000000..62cd10290e
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.0/0005-bcma-add-mips-driver.patch
@@ -0,0 +1,402 @@
+From 0a1a5fd8aab864e7b531ab88fd317ff7278d884d Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Mon, 6 Jun 2011 00:07:32 +0200
+Subject: [PATCH 05/14] bcma: add mips driver
+
+This adds a mips driver to bcma. This is only found on embedded
+devices. For now the driver just initializes the irqs used on this
+system.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ drivers/bcma/Kconfig | 11 ++-
+ drivers/bcma/Makefile | 1 +
+ drivers/bcma/driver_mips.c | 234 +++++++++++++++++++++++++++++++++
+ drivers/bcma/main.c | 19 +++
+ include/linux/bcma/bcma.h | 2 +
+ include/linux/bcma/bcma_driver_mips.h | 49 +++++++
+ 6 files changed, 315 insertions(+), 1 deletions(-)
+ create mode 100644 drivers/bcma/driver_mips.c
+ create mode 100644 include/linux/bcma/bcma_driver_mips.h
+
+--- a/drivers/bcma/Kconfig
++++ b/drivers/bcma/Kconfig
+@@ -29,9 +29,18 @@ config BCMA_HOST_PCI
+
+ config BCMA_HOST_SOC
+ bool
+- depends on BCMA && MIPS
++ depends on BCMA_DRIVER_MIPS
+ default n
+
++config BCMA_DRIVER_MIPS
++ bool "BCMA Broadcom MIPS core driver"
++ depends on BCMA && MIPS
++ help
++ Driver for the Broadcom MIPS core attached to Broadcom specific
++ Advanced Microcontroller Bus.
++
++ If unsure, say N
++
+ config BCMA_DEBUG
+ bool "BCMA debugging"
+ depends on BCMA
+--- a/drivers/bcma/Makefile
++++ b/drivers/bcma/Makefile
+@@ -1,6 +1,7 @@
+ bcma-y += main.o scan.o core.o sprom.o
+ bcma-y += driver_chipcommon.o driver_chipcommon_pmu.o
+ bcma-y += driver_pci.o
++bcma-$(CONFIG_BCMA_DRIVER_MIPS) += driver_mips.o
+ bcma-$(CONFIG_BCMA_HOST_PCI) += host_pci.o
+ bcma-$(CONFIG_BCMA_HOST_SOC) += host_soc.o
+ obj-$(CONFIG_BCMA) += bcma.o
+--- /dev/null
++++ b/drivers/bcma/driver_mips.c
+@@ -0,0 +1,234 @@
++/*
++ * Broadcom specific AMBA
++ * Broadcom MIPS32 74K core driver
++ *
++ * Copyright 2009, Broadcom Corporation
++ * Copyright 2006, 2007, Michael Buesch <mb@bu3sch.de>
++ * Copyright 2010, Bernhard Loos <bernhardloos@googlemail.com>
++ * Copyright 2011, Hauke Mehrtens <hauke@hauke-m.de>
++ *
++ * Licensed under the GNU/GPL. See COPYING for details.
++ */
++
++#include "bcma_private.h"
++
++#include <linux/bcma/bcma.h>
++
++#include <linux/serial.h>
++#include <linux/serial_core.h>
++#include <linux/serial_reg.h>
++#include <linux/time.h>
++
++/* The 47162a0 hangs when reading its registers */
++static inline bool bcma_core_mips_bcm47162a0_quirk(struct bcma_device *dev)
++{
++ return dev->bus->chipinfo.id == 47162 && dev->bus->chipinfo.rev == 0 &&
++ dev->id.id == BCMA_CORE_MIPS_74K;
++}
++
++static inline u32 mips_read32(struct bcma_drv_mips *mcore,
++ u16 offset)
++{
++ return bcma_read32(mcore->core, offset);
++}
++
++static inline void mips_write32(struct bcma_drv_mips *mcore,
++ u16 offset,
++ u32 value)
++{
++ bcma_write32(mcore->core, offset, value);
++}
++
++static const u32 ipsflag_irq_mask[] = {
++ 0,
++ BCMA_MIPS_IPSFLAG_IRQ1,
++ BCMA_MIPS_IPSFLAG_IRQ2,
++ BCMA_MIPS_IPSFLAG_IRQ3,
++ BCMA_MIPS_IPSFLAG_IRQ4,
++};
++
++static const u32 ipsflag_irq_shift[] = {
++ 0,
++ BCMA_MIPS_IPSFLAG_IRQ1_SHIFT,
++ BCMA_MIPS_IPSFLAG_IRQ2_SHIFT,
++ BCMA_MIPS_IPSFLAG_IRQ3_SHIFT,
++ BCMA_MIPS_IPSFLAG_IRQ4_SHIFT,
++};
++
++static u32 bcma_core_mips_irqflag(struct bcma_device *dev)
++{
++ u32 flag;
++
++ if (bcma_core_mips_bcm47162a0_quirk(dev))
++ return dev->core_index;
++ flag = bcma_aread32(dev, BCMA_MIPS_OOBSELOUTA30);
++
++ return flag & 0x1F;
++}
++
++
++/* Get the MIPS IRQ assignment for a specified device.
++ * If unassigned, 0 is returned.
++ * If disabled, 5 is returned.
++ */
++unsigned int bcma_core_mips_irq(struct bcma_device *dev)
++{
++ struct bcma_device *mdev = dev->bus->drv_mips.core;
++ u32 irqflag;
++ unsigned int irq;
++
++ irqflag = bcma_core_mips_irqflag(dev);
++
++ for (irq = 1; irq <= 4; irq++)
++ if (bcma_read32(mdev, BCMA_MIPS_MIPS74K_INTMASK(irq)) &
++ (1 << irqflag))
++ return irq;
++
++ return 0;
++}
++EXPORT_SYMBOL(bcma_core_mips_irq);
++
++static void bcma_core_mips_set_irq(struct bcma_device *dev, unsigned int irq)
++{
++ unsigned int oldirq = bcma_core_mips_irq(dev);
++ struct bcma_bus *bus = dev->bus;
++ struct bcma_device *mdev = bus->drv_mips.core;
++ u32 irqflag;
++
++ irqflag = bcma_core_mips_irqflag(dev);
++ BUG_ON(oldirq == 6);
++
++ dev->irq = irq + 2;
++
++ /* clear the old irq */
++ if (oldirq == 0)
++ bcma_write32(mdev, BCMA_MIPS_MIPS74K_INTMASK(0),
++ bcma_read32(mdev, BCMA_MIPS_MIPS74K_INTMASK(0)) &
++ ~(1 << irqflag));
++ else
++ bcma_write32(mdev, BCMA_MIPS_MIPS74K_INTMASK(irq), 0);
++
++ /* assign the new one */
++ if (irq == 0) {
++ bcma_write32(mdev, BCMA_MIPS_MIPS74K_INTMASK(0),
++ bcma_read32(mdev, BCMA_MIPS_MIPS74K_INTMASK(0)) |
++ (1 << irqflag));
++ } else {
++ u32 oldirqflag = bcma_read32(mdev,
++ BCMA_MIPS_MIPS74K_INTMASK(irq));
++ if (oldirqflag) {
++ struct bcma_device *core;
++
++ /* backplane irq line is in use, find out who uses
++ * it and set user to irq 0
++ */
++ list_for_each_entry_reverse(core, &bus->cores, list) {
++ if ((1 << bcma_core_mips_irqflag(core)) ==
++ oldirqflag) {
++ bcma_core_mips_set_irq(core, 0);
++ break;
++ }
++ }
++ }
++ bcma_write32(mdev, BCMA_MIPS_MIPS74K_INTMASK(irq),
++ 1 << irqflag);
++ }
++
++ pr_info("set_irq: core 0x%04x, irq %d => %d\n",
++ dev->id.id, oldirq + 2, irq + 2);
++}
++
++static void bcma_core_mips_print_irq(struct bcma_device *dev, unsigned int irq)
++{
++ int i;
++ static const char *irq_name[] = {"2(S)", "3", "4", "5", "6", "D", "I"};
++ printk(KERN_INFO KBUILD_MODNAME ": core 0x%04x, irq :", dev->id.id);
++ for (i = 0; i <= 6; i++)
++ printk(" %s%s", irq_name[i], i == irq ? "*" : " ");
++ printk("\n");
++}
++
++static void bcma_core_mips_dump_irq(struct bcma_bus *bus)
++{
++ struct bcma_device *core;
++
++ list_for_each_entry_reverse(core, &bus->cores, list) {
++ bcma_core_mips_print_irq(core, bcma_core_mips_irq(core));
++ }
++}
++
++static void bcma_core_mips_flash_detect(struct bcma_drv_mips *mcore)
++{
++ struct bcma_bus *bus = mcore->core->bus;
++
++ mcore->flash_buswidth = 2;
++ if (bus->drv_cc.core) {
++ mcore->flash_window = 0x1c000000;
++ mcore->flash_window_size = 0x02000000;
++ switch (bus->drv_cc.capabilities & BCMA_CC_CAP_FLASHT) {
++ case BCMA_CC_FLASHT_STSER:
++ case BCMA_CC_FLASHT_ATSER:
++ pr_err("Serial flash not supported.\n");
++ break;
++ case BCMA_CC_FLASHT_PARA:
++ if ((bcma_read32(bus->drv_cc.core, BCMA_CC_FLASH_CFG) &
++ BCMA_CC_OTPS) == 0)
++ mcore->flash_buswidth = 1;
++ break;
++ }
++ } else {
++ mcore->flash_window = 0x1fc00000;
++ mcore->flash_window_size = 0x00400000;
++ }
++}
++
++void bcma_core_mips_init(struct bcma_drv_mips *mcore)
++{
++ struct bcma_bus *bus;
++ struct bcma_device *core;
++ bus = mcore->core->bus;
++
++ pr_info("Initializing MIPS core...\n");
++
++ if (!mcore->setup_done)
++ mcore->assigned_irqs = 1;
++
++ /* Assign IRQs to all cores on the bus */
++ list_for_each_entry_reverse(core, &bus->cores, list) {
++ int mips_irq;
++ if (core->irq)
++ continue;
++
++ mips_irq = bcma_core_mips_irq(core);
++ if (mips_irq > 4)
++ core->irq = 0;
++ else
++ core->irq = mips_irq + 2;
++ if (core->irq > 5)
++ continue;
++ switch (core->id.id) {
++ case BCMA_CORE_PCI:
++ case BCMA_CORE_PCIE:
++ case BCMA_CORE_ETHERNET:
++ case BCMA_CORE_ETHERNET_GBIT:
++ case BCMA_CORE_MAC_GBIT:
++ case BCMA_CORE_80211:
++ case BCMA_CORE_USB20_HOST:
++ /* These devices get their own IRQ line if available,
++ * the rest goes on IRQ0
++ */
++ if (mcore->assigned_irqs <= 4)
++ bcma_core_mips_set_irq(core,
++ mcore->assigned_irqs++);
++ break;
++ }
++ }
++ pr_info("IRQ reconfiguration done\n");
++ bcma_core_mips_dump_irq(bus);
++
++ if (mcore->setup_done)
++ return;
++
++ bcma_core_mips_flash_detect(mcore);
++ mcore->setup_done = true;
++}
+--- a/drivers/bcma/main.c
++++ b/drivers/bcma/main.c
+@@ -80,6 +80,7 @@ static int bcma_register_cores(struct bc
+ case BCMA_CORE_CHIPCOMMON:
+ case BCMA_CORE_PCI:
+ case BCMA_CORE_PCIE:
++ case BCMA_CORE_MIPS_74K:
+ continue;
+ }
+
+@@ -141,6 +142,15 @@ int bcma_bus_register(struct bcma_bus *b
+ bcma_core_chipcommon_init(&bus->drv_cc);
+ }
+
++#ifdef CONFIG_BCMA_DRIVER_MIPS
++ /* Init MIPS core */
++ core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
++ if (core) {
++ bus->drv_mips.core = core;
++ bcma_core_mips_init(&bus->drv_mips);
++ }
++#endif
++
+ /* Init PCIE core */
+ core = bcma_find_core(bus, BCMA_CORE_PCIE);
+ if (core) {
+@@ -208,6 +218,15 @@ int __init bcma_bus_early_register(struc
+ bcma_core_chipcommon_init(&bus->drv_cc);
+ }
+
++#ifdef CONFIG_BCMA_DRIVER_MIPS
++ /* Init MIPS core */
++ core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
++ if (core) {
++ bus->drv_mips.core = core;
++ bcma_core_mips_init(&bus->drv_mips);
++ }
++#endif
++
+ pr_info("Early bus registered\n");
+
+ return 0;
+--- a/include/linux/bcma/bcma.h
++++ b/include/linux/bcma/bcma.h
+@@ -6,6 +6,7 @@
+
+ #include <linux/bcma/bcma_driver_chipcommon.h>
+ #include <linux/bcma/bcma_driver_pci.h>
++#include <linux/bcma/bcma_driver_mips.h>
+ #include <linux/ssb/ssb.h> /* SPROM sharing */
+
+ #include "bcma_regs.h"
+@@ -193,6 +194,7 @@ struct bcma_bus {
+
+ struct bcma_drv_cc drv_cc;
+ struct bcma_drv_pci drv_pci;
++ struct bcma_drv_mips drv_mips;
+
+ /* We decided to share SPROM struct with SSB as long as we do not need
+ * any hacks for BCMA. This simplifies drivers code. */
+--- /dev/null
++++ b/include/linux/bcma/bcma_driver_mips.h
+@@ -0,0 +1,49 @@
++#ifndef LINUX_BCMA_DRIVER_MIPS_H_
++#define LINUX_BCMA_DRIVER_MIPS_H_
++
++#define BCMA_MIPS_IPSFLAG 0x0F08
++/* which sbflags get routed to mips interrupt 1 */
++#define BCMA_MIPS_IPSFLAG_IRQ1 0x0000003F
++#define BCMA_MIPS_IPSFLAG_IRQ1_SHIFT 0
++/* which sbflags get routed to mips interrupt 2 */
++#define BCMA_MIPS_IPSFLAG_IRQ2 0x00003F00
++#define BCMA_MIPS_IPSFLAG_IRQ2_SHIFT 8
++/* which sbflags get routed to mips interrupt 3 */
++#define BCMA_MIPS_IPSFLAG_IRQ3 0x003F0000
++#define BCMA_MIPS_IPSFLAG_IRQ3_SHIFT 16
++/* which sbflags get routed to mips interrupt 4 */
++#define BCMA_MIPS_IPSFLAG_IRQ4 0x3F000000
++#define BCMA_MIPS_IPSFLAG_IRQ4_SHIFT 24
++
++/* MIPS 74K core registers */
++#define BCMA_MIPS_MIPS74K_CORECTL 0x0000
++#define BCMA_MIPS_MIPS74K_EXCEPTBASE 0x0004
++#define BCMA_MIPS_MIPS74K_BIST 0x000C
++#define BCMA_MIPS_MIPS74K_INTMASK_INT0 0x0014
++#define BCMA_MIPS_MIPS74K_INTMASK(int) \
++ ((int) * 4 + BCMA_MIPS_MIPS74K_INTMASK_INT0)
++#define BCMA_MIPS_MIPS74K_NMIMASK 0x002C
++#define BCMA_MIPS_MIPS74K_GPIOSEL 0x0040
++#define BCMA_MIPS_MIPS74K_GPIOOUT 0x0044
++#define BCMA_MIPS_MIPS74K_GPIOEN 0x0048
++#define BCMA_MIPS_MIPS74K_CLKCTLST 0x01E0
++
++#define BCMA_MIPS_OOBSELOUTA30 0x100
++
++struct bcma_device;
++
++struct bcma_drv_mips {
++ struct bcma_device *core;
++ u8 setup_done:1;
++ unsigned int assigned_irqs;
++
++ u8 flash_buswidth;
++ u32 flash_window;
++ u32 flash_window_size;
++};
++
++extern void bcma_core_mips_init(struct bcma_drv_mips *mcore);
++
++extern unsigned int bcma_core_mips_irq(struct bcma_device *dev);
++
++#endif /* LINUX_BCMA_DRIVER_MIPS_H_ */
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