Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

Conflicts:

	drivers/ata/libata-scsi.c
	include/linux/libata.h

Futher merge of Linus's head and compilation fixups.

Signed-Off-By: David Howells <dhowells@redhat.com>

5 files changed, 381 insertions, 86 deletions

diff --git a/arch/powerpc/platforms/embedded6xx/Kconfig b/arch/powerpc/platforms/embedded6xx/Kconfig
index 234a861..ddbe398 100644
--- a/arch/powerpc/platforms/embedded6xx/Kconfig
+++ b/arch/powerpc/platforms/embedded6xx/Kconfig
@@ -74,6 +74,18 @@ config SANDPOINT
 	  Select SANDPOINT if configuring for a Motorola Sandpoint X3
 	  (any flavor).
 
+config LINKSTATION
+	bool "Linkstation / Kurobox(HG) from Buffalo"
+	select MPIC
+	select FSL_SOC
+	select PPC_UDBG_16550 if SERIAL_8250
+	help
+	  Select LINKSTATION if configuring for one of PPC- (MPC8241)
+	  based NAS systems from Buffalo Technology. So far only
+	  KuroboxHG has been tested. In the future classical Kurobox,
+	  Linkstation-I HD-HLAN and HD-HGLAN versions, and PPC-based
+	  Terastation systems should be supported too.
+
 config MPC7448HPC2
 	bool "Freescale MPC7448HPC2(Taiga)"
 	select TSI108_BRIDGE
@@ -146,15 +158,6 @@ config PQ2FADS
 	  Select PQ2FADS if you wish to configure for a Freescale
 	  PQ2FADS board (-VR or -ZU).
 
-config LITE5200
-	bool "Freescale LITE5200 / (IceCube)"
-	select PPC_MPC52xx
-	help
-	  Support for the LITE5200 dev board for the MPC5200 from Freescale.
-	  This is for the LITE5200 version 2.0 board. Don't know if it changes
-	  much but it's only been tested on this board version. I think this
-	  board is also known as IceCube.
-
 config EV64360
 	bool "Marvell-EV64360BP"
 	help
@@ -172,9 +175,6 @@ config TQM8xxL
 	depends on 8xx && (TQM823L || TQM850L || FPS850L || TQM855L || TQM860L)
 	default y
 
-config PPC_MPC52xx
-	bool
-
 config 8260
 	bool "CPM2 Support" if WILLOW
 	depends on 6xx
@@ -208,7 +208,7 @@ config PPC_GEN550
 	depends on SANDPOINT || SPRUCE || PPLUS || \
 		PRPMC750 || PRPMC800 || LOPEC || \
 		(EV64260 && !SERIAL_MPSC) || CHESTNUT || RADSTONE_PPC7D || \
-		83xx
+		83xx || LINKSTATION
 	default y
 
 config FORCE
@@ -282,13 +282,13 @@ config EPIC_SERIAL_MODE
 
 config MPC10X_BRIDGE
 	bool
-	depends on POWERPMC250 || LOPEC || SANDPOINT
+	depends on POWERPMC250 || LOPEC || SANDPOINT || LINKSTATION
 	select PPC_INDIRECT_PCI
 	default y
 
 config MPC10X_OPENPIC
 	bool
-	depends on POWERPMC250 || LOPEC || SANDPOINT
+	depends on POWERPMC250 || LOPEC || SANDPOINT || LINKSTATION
 	default y
 
 config MPC10X_STORE_GATHERING
diff --git a/arch/powerpc/platforms/embedded6xx/Makefile b/arch/powerpc/platforms/embedded6xx/Makefile
index fa499fe..d3d11a3 100644
--- a/arch/powerpc/platforms/embedded6xx/Makefile
+++ b/arch/powerpc/platforms/embedded6xx/Makefile
@@ -2,3 +2,4 @@
 # Makefile for the 6xx/7xx/7xxxx linux kernel.
 #
 obj-$(CONFIG_MPC7448HPC2)	+= mpc7448_hpc2.o
+obj-$(CONFIG_LINKSTATION)	+= linkstation.o ls_uart.o
diff --git a/arch/powerpc/platforms/embedded6xx/linkstation.c b/arch/powerpc/platforms/embedded6xx/linkstation.c
new file mode 100644
index 0000000..61599d9
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/linkstation.c
@@ -0,0 +1,211 @@
+/*
+ * Board setup routines for the Buffalo Linkstation / Kurobox Platform.
+ *
+ * Copyright (C) 2006 G. Liakhovetski (g.liakhovetski@gmx.de)
+ *
+ * Based on sandpoint.c by Mark A. Greer
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2.  This program is licensed "as is" without any warranty of
+ * any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/initrd.h>
+#include <linux/root_dev.h>
+#include <linux/mtd/physmap.h>
+
+#include <asm/time.h>
+#include <asm/prom.h>
+#include <asm/mpic.h>
+#include <asm/mpc10x.h>
+#include <asm/pci-bridge.h>
+
+static struct mtd_partition linkstation_physmap_partitions[] = {
+	{
+		.name   = "mtd_firmimg",
+		.offset = 0x000000,
+		.size   = 0x300000,
+	},
+	{
+		.name   = "mtd_bootcode",
+		.offset = 0x300000,
+		.size   = 0x070000,
+	},
+	{
+		.name   = "mtd_status",
+		.offset = 0x370000,
+		.size   = 0x010000,
+	},
+	{
+		.name   = "mtd_conf",
+		.offset = 0x380000,
+		.size   = 0x080000,
+	},
+	{
+		.name   = "mtd_allflash",
+		.offset = 0x000000,
+		.size   = 0x400000,
+	},
+	{
+		.name   = "mtd_data",
+		.offset = 0x310000,
+		.size   = 0x0f0000,
+	},
+};
+
+static int __init add_bridge(struct device_node *dev)
+{
+	int len;
+	struct pci_controller *hose;
+	int *bus_range;
+
+	printk("Adding PCI host bridge %s\n", dev->full_name);
+
+	bus_range = (int *) get_property(dev, "bus-range", &len);
+	if (bus_range == NULL || len < 2 * sizeof(int))
+		printk(KERN_WARNING "Can't get bus-range for %s, assume"
+				" bus 0\n", dev->full_name);
+
+	hose = pcibios_alloc_controller();
+	if (hose == NULL)
+		return -ENOMEM;
+	hose->first_busno = bus_range ? bus_range[0] : 0;
+	hose->last_busno = bus_range ? bus_range[1] : 0xff;
+	hose->arch_data = dev;
+	setup_indirect_pci(hose, 0xfec00000, 0xfee00000);
+
+	/* Interpret the "ranges" property */
+	/* This also maps the I/O region and sets isa_io/mem_base */
+	pci_process_bridge_OF_ranges(hose, dev, 1);
+
+	return 0;
+}
+
+static void __init linkstation_setup_arch(void)
+{
+	struct device_node *np;
+#ifdef CONFIG_MTD_PHYSMAP
+	physmap_set_partitions(linkstation_physmap_partitions,
+			       ARRAY_SIZE(linkstation_physmap_partitions));
+#endif
+
+#ifdef CONFIG_BLK_DEV_INITRD
+	if (initrd_start)
+		ROOT_DEV = Root_RAM0;
+	else
+#endif
+#ifdef	CONFIG_ROOT_NFS
+		ROOT_DEV = Root_NFS;
+#else
+		ROOT_DEV = Root_HDA1;
+#endif
+
+	/* Lookup PCI host bridges */
+	for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
+		add_bridge(np);
+
+	printk(KERN_INFO "BUFFALO Network Attached Storage Series\n");
+	printk(KERN_INFO "(C) 2002-2005 BUFFALO INC.\n");
+}
+
+/*
+ * Interrupt setup and service.  Interrrupts on the linkstation come
+ * from the four PCI slots plus onboard 8241 devices: I2C, DUART.
+ */
+static void __init linkstation_init_IRQ(void)
+{
+	struct mpic *mpic;
+	struct device_node *dnp;
+	void *prop;
+	int size;
+	phys_addr_t paddr;
+
+	dnp = of_find_node_by_type(NULL, "open-pic");
+	if (dnp == NULL)
+		return;
+
+	prop = (struct device_node *)get_property(dnp, "reg", &size);
+	paddr = (phys_addr_t)of_translate_address(dnp, prop);
+
+	mpic = mpic_alloc(dnp, paddr, MPIC_PRIMARY | MPIC_WANTS_RESET, 4, 32, " EPIC     ");
+	BUG_ON(mpic == NULL);
+
+	/* PCI IRQs */
+	mpic_assign_isu(mpic, 0, paddr + 0x10200);
+
+	/* I2C */
+	mpic_assign_isu(mpic, 1, paddr + 0x11000);
+
+	/* ttyS0, ttyS1 */
+	mpic_assign_isu(mpic, 2, paddr + 0x11100);
+
+	mpic_init(mpic);
+}
+
+extern void avr_uart_configure(void);
+extern void avr_uart_send(const char);
+
+static void linkstation_restart(char *cmd)
+{
+	local_irq_disable();
+
+	/* Reset system via AVR */
+	avr_uart_configure();
+	/* Send reboot command */
+	avr_uart_send('C');
+
+	for(;;)  /* Spin until reset happens */
+		avr_uart_send('G');	/* "kick" */
+}
+
+static void linkstation_power_off(void)
+{
+	local_irq_disable();
+
+	/* Power down system via AVR */
+	avr_uart_configure();
+	/* send shutdown command */
+	avr_uart_send('E');
+
+	for(;;)  /* Spin until power-off happens */
+		avr_uart_send('G');	/* "kick" */
+	/* NOTREACHED */
+}
+
+static void linkstation_halt(void)
+{
+	linkstation_power_off();
+	/* NOTREACHED */
+}
+
+static void linkstation_show_cpuinfo(struct seq_file *m)
+{
+	seq_printf(m, "vendor\t\t: Buffalo Technology\n");
+	seq_printf(m, "machine\t\t: Linkstation I/Kurobox(HG)\n");
+}
+
+static int __init linkstation_probe(void)
+{
+	unsigned long root;
+
+	root = of_get_flat_dt_root();
+
+	if (!of_flat_dt_is_compatible(root, "linkstation"))
+		return 0;
+	return 1;
+}
+
+define_machine(linkstation){
+	.name 			= "Buffalo Linkstation",
+	.probe 			= linkstation_probe,
+	.setup_arch 		= linkstation_setup_arch,
+	.init_IRQ 		= linkstation_init_IRQ,
+	.show_cpuinfo 		= linkstation_show_cpuinfo,
+	.get_irq 		= mpic_get_irq,
+	.restart 		= linkstation_restart,
+	.power_off 		= linkstation_power_off,
+	.halt	 		= linkstation_halt,
+	.calibrate_decr 	= generic_calibrate_decr,
+};
diff --git a/arch/powerpc/platforms/embedded6xx/ls_uart.c b/arch/powerpc/platforms/embedded6xx/ls_uart.c
new file mode 100644
index 0000000..31bcdae
--- /dev/null
+++ b/arch/powerpc/platforms/embedded6xx/ls_uart.c
@@ -0,0 +1,131 @@
+#include <linux/workqueue.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/serial_reg.h>
+#include <linux/serial_8250.h>
+#include <asm/io.h>
+#include <asm/mpc10x.h>
+#include <asm/ppc_sys.h>
+#include <asm/prom.h>
+#include <asm/termbits.h>
+
+static void __iomem *avr_addr;
+static unsigned long avr_clock;
+
+static struct work_struct wd_work;
+
+static void wd_stop(void *unused)
+{
+	const char string[] = "AAAAFFFFJJJJ>>>>VVVV>>>>ZZZZVVVVKKKK";
+	int i = 0, rescue = 8;
+	int len = strlen(string);
+
+	while (rescue--) {
+		int j;
+		char lsr = in_8(avr_addr + UART_LSR);
+
+		if (lsr & (UART_LSR_THRE | UART_LSR_TEMT)) {
+			for (j = 0; j < 16 && i < len; j++, i++)
+				out_8(avr_addr + UART_TX, string[i]);
+			if (i == len) {
+				/* Read "OK" back: 4ms for the last "KKKK"
+				   plus a couple bytes back */
+				msleep(7);
+				printk("linkstation: disarming the AVR watchdog: ");
+				while (in_8(avr_addr + UART_LSR) & UART_LSR_DR)
+					printk("%c", in_8(avr_addr + UART_RX));
+				break;
+			}
+		}
+		msleep(17);
+	}
+	printk("\n");
+}
+
+#define AVR_QUOT(clock) ((clock) + 8 * 9600) / (16 * 9600)
+
+void avr_uart_configure(void)
+{
+	unsigned char cval = UART_LCR_WLEN8;
+	unsigned int quot = AVR_QUOT(avr_clock);
+
+	if (!avr_addr || !avr_clock)
+		return;
+
+	out_8(avr_addr + UART_LCR, cval);			/* initialise UART */
+	out_8(avr_addr + UART_MCR, 0);
+	out_8(avr_addr + UART_IER, 0);
+
+	cval |= UART_LCR_STOP | UART_LCR_PARITY | UART_LCR_EPAR;
+
+	out_8(avr_addr + UART_LCR, cval);			/* Set character format */
+
+	out_8(avr_addr + UART_LCR, cval | UART_LCR_DLAB);	/* set DLAB */
+	out_8(avr_addr + UART_DLL, quot & 0xff);		/* LS of divisor */
+	out_8(avr_addr + UART_DLM, quot >> 8);			/* MS of divisor */
+	out_8(avr_addr + UART_LCR, cval);			/* reset DLAB */
+	out_8(avr_addr + UART_FCR, UART_FCR_ENABLE_FIFO);	/* enable FIFO */
+}
+
+void avr_uart_send(const char c)
+{
+	if (!avr_addr || !avr_clock)
+		return;
+
+	out_8(avr_addr + UART_TX, c);
+	out_8(avr_addr + UART_TX, c);
+	out_8(avr_addr + UART_TX, c);
+	out_8(avr_addr + UART_TX, c);
+}
+
+static void __init ls_uart_init(void)
+{
+	local_irq_disable();
+
+#ifndef CONFIG_SERIAL_8250
+	out_8(avr_addr + UART_FCR, UART_FCR_ENABLE_FIFO);	/* enable FIFO */
+	out_8(avr_addr + UART_FCR, UART_FCR_ENABLE_FIFO |
+	      UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT);	/* clear FIFOs */
+	out_8(avr_addr + UART_FCR, 0);
+	out_8(avr_addr + UART_IER, 0);
+
+	/* Clear up interrupts */
+	(void) in_8(avr_addr + UART_LSR);
+	(void) in_8(avr_addr + UART_RX);
+	(void) in_8(avr_addr + UART_IIR);
+	(void) in_8(avr_addr + UART_MSR);
+#endif
+	avr_uart_configure();
+
+	local_irq_enable();
+}
+
+static int __init ls_uarts_init(void)
+{
+	struct device_node *avr;
+	phys_addr_t phys_addr;
+	int len;
+
+	avr = of_find_node_by_path("/soc10x/serial@80004500");
+	if (!avr)
+		return -EINVAL;
+
+	avr_clock = *(u32*)get_property(avr, "clock-frequency", &len);
+	phys_addr = ((u32*)get_property(avr, "reg", &len))[0];
+
+	if (!avr_clock || !phys_addr)
+		return -EINVAL;
+
+	avr_addr = ioremap(phys_addr, 32);
+	if (!avr_addr)
+		return -EFAULT;
+
+	ls_uart_init();
+
+	INIT_WORK(&wd_work, wd_stop, NULL);
+	schedule_work(&wd_work);
+
+	return 0;
+}
+
+late_initcall(ls_uarts_init);
diff --git a/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c b/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
index bdb475c..3fcc85f 100644
--- a/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
+++ b/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
@@ -60,7 +60,7 @@ pci_dram_offset = MPC7448_HPC2_PCI_MEM_OFFSET;
 
 extern int tsi108_setup_pci(struct device_node *dev);
 extern void _nmask_and_or_msr(unsigned long nmask, unsigned long or_val);
-extern void tsi108_pci_int_init(void);
+extern void tsi108_pci_int_init(struct device_node *node);
 extern void tsi108_irq_cascade(unsigned int irq, struct irq_desc *desc);
 
 int mpc7448_hpc2_exclude_device(u_char bus, u_char devfn)
@@ -71,65 +71,6 @@ int mpc7448_hpc2_exclude_device(u_char bus, u_char devfn)
 		return PCIBIOS_SUCCESSFUL;
 }
 
-/*
- * find pci slot by devfn in interrupt map of OF tree
- */
-u8 find_slot_by_devfn(unsigned int *interrupt_map, unsigned int devfn)
-{
-	int i;
-	unsigned int tmp;
-	for (i = 0; i < 4; i++){
-		tmp = interrupt_map[i*4*7];
-		if ((tmp >> 11) == (devfn >> 3))
-			return i;
-	}
-	return i;
-}
-
-/*
- * Scans the interrupt map for pci device
- */
-void mpc7448_hpc2_fixup_irq(struct pci_dev *dev)
-{
-	struct pci_controller *hose;
-	struct device_node *node;
-	const unsigned int *interrupt;
-	int busnr;
-	int len;
-	u8 slot;
-	u8 pin;
-
-	/* Lookup the hose */
-	busnr = dev->bus->number;
-	hose = pci_bus_to_hose(busnr);
-	if (!hose)
-		printk(KERN_ERR "No pci hose found\n");
-
-	/* Check it has an OF node associated */
-	node = (struct device_node *) hose->arch_data;
-	if (!node)
-		printk(KERN_ERR "No pci node found\n");
-
-	interrupt = get_property(node, "interrupt-map", &len);
-	slot = find_slot_by_devfn(interrupt, dev->devfn);
-	pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
-	if (pin == 0 || pin > 4)
-		pin = 1;
-	pin--;
-	dev->irq  = interrupt[slot*4*7 + pin*7 + 5];
-	DBG("TSI_PCI: dev->irq = 0x%x\n", dev->irq);
-}
-/* temporary pci irq map fixup*/
-
-void __init mpc7448_hpc2_pcibios_fixup(void)
-{
-	struct pci_dev *dev = NULL;
-	for_each_pci_dev(dev) {
-		mpc7448_hpc2_fixup_irq(dev);
-		pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
-	}
-}
-
 static void __init mpc7448_hpc2_setup_arch(void)
 {
 	struct device_node *cpu;
@@ -192,9 +133,12 @@ static void __init mpc7448_hpc2_init_IRQ(void)
 {
 	struct mpic *mpic;
 	phys_addr_t mpic_paddr = 0;
+	struct device_node *tsi_pic;
+#ifdef CONFIG_PCI
 	unsigned int cascade_pci_irq;
 	struct device_node *tsi_pci;
-	struct device_node *tsi_pic;
+	struct device_node *cascade_node = NULL;
+#endif
 
 	tsi_pic = of_find_node_by_type(NULL, "open-pic");
 	if (tsi_pic) {
@@ -208,31 +152,41 @@ static void __init mpc7448_hpc2_init_IRQ(void)
 		return;
 	}
 
-	DBG("%s: tsi108pic phys_addr = 0x%x\n", __FUNCTION__,
+	DBG("%s: tsi108 pic phys_addr = 0x%x\n", __FUNCTION__,
 	    (u32) mpic_paddr);
 
 	mpic = mpic_alloc(tsi_pic, mpic_paddr,
 			MPIC_PRIMARY | MPIC_BIG_ENDIAN | MPIC_WANTS_RESET |
 			MPIC_SPV_EOI | MPIC_NO_PTHROU_DIS | MPIC_REGSET_TSI108,
-			0, /* num_sources used */
-			0, /* num_sources used */
+			24,
+			NR_IRQS-4, /* num_sources used */
 			"Tsi108_PIC");
 
-	BUG_ON(mpic == NULL); /* XXXX */
+	BUG_ON(mpic == NULL);
+
+	mpic_assign_isu(mpic, 0, mpic_paddr + 0x100);
+
 	mpic_init(mpic);
 
+#ifdef CONFIG_PCI
 	tsi_pci = of_find_node_by_type(NULL, "pci");
-	if (tsi_pci == 0) {
+	if (tsi_pci == NULL) {
 		printk("%s: No tsi108 pci node found !\n", __FUNCTION__);
 		return;
 	}
+	cascade_node = of_find_node_by_type(NULL, "pic-router");
+	if (cascade_node == NULL) {
+		printk("%s: No tsi108 pci cascade node found !\n", __FUNCTION__);
+		return;
+	}
 
 	cascade_pci_irq = irq_of_parse_and_map(tsi_pci, 0);
+	DBG("%s: tsi108 cascade_pci_irq = 0x%x\n", __FUNCTION__,
+	    (u32) cascade_pci_irq);
+	tsi108_pci_int_init(cascade_node);
 	set_irq_data(cascade_pci_irq, mpic);
 	set_irq_chained_handler(cascade_pci_irq, tsi108_irq_cascade);
-
-	tsi108_pci_int_init();
-
+#endif
 	/* Configure MPIC outputs to CPU0 */
 	tsi108_write_reg(TSI108_MPIC_OFFSET + 0x30c, 0);
 	of_node_put(tsi_pic);
@@ -290,7 +244,6 @@ static int mpc7448_machine_check_exception(struct pt_regs *regs)
 		return 1;
 	}
 	return 0;
-
 }
 
 define_machine(mpc7448_hpc2){
@@ -300,7 +253,6 @@ define_machine(mpc7448_hpc2){
 	.init_IRQ 		= mpc7448_hpc2_init_IRQ,
 	.show_cpuinfo 		= mpc7448_hpc2_show_cpuinfo,
 	.get_irq 		= mpic_get_irq,
-	.pcibios_fixup 		= mpc7448_hpc2_pcibios_fixup,
 	.restart 		= mpc7448_hpc2_restart,
 	.calibrate_decr 	= generic_calibrate_decr,
 	.machine_check_exception= mpc7448_machine_check_exception,