From 0585a155a7318e69d43ef20636c2f072ad17d03f Mon Sep 17 00:00:00 2001
From: Anton Vorontsov <avorontsov@ru.mvista.com>
Date: Thu, 8 Jan 2009 04:31:41 +0300
Subject: powerpc/83xx: Add PCI-E support for all MPC83xx boards with PCI-E

This patch adds pcie nodes to the appropriate dts files, plus adds
some probing code for the boards.

Also, remove of_device_is_avaliable() check from the mpc837x_mds.c
board file, as mpc83xx_add_bridge() has the same check now.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 arch/powerpc/platforms/83xx/mpc831x_rdb.c |  2 ++
 arch/powerpc/platforms/83xx/mpc837x_mds.c | 10 +++-------
 arch/powerpc/platforms/83xx/mpc837x_rdb.c |  2 ++
 3 files changed, 7 insertions(+), 7 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/83xx/mpc831x_rdb.c b/arch/powerpc/platforms/83xx/mpc831x_rdb.c
index 91a2c80b9d7..0b4f883b20e 100644
--- a/arch/powerpc/platforms/83xx/mpc831x_rdb.c
+++ b/arch/powerpc/platforms/83xx/mpc831x_rdb.c
@@ -38,6 +38,8 @@ static void __init mpc831x_rdb_setup_arch(void)
 #ifdef CONFIG_PCI
 	for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
 		mpc83xx_add_bridge(np);
+	for_each_compatible_node(np, "pci", "fsl,mpc8314-pcie")
+		mpc83xx_add_bridge(np);
 #endif
 	mpc831x_usb_cfg();
 }
diff --git a/arch/powerpc/platforms/83xx/mpc837x_mds.c b/arch/powerpc/platforms/83xx/mpc837x_mds.c
index 530ef990ca7..634785cc452 100644
--- a/arch/powerpc/platforms/83xx/mpc837x_mds.c
+++ b/arch/powerpc/platforms/83xx/mpc837x_mds.c
@@ -84,14 +84,10 @@ static void __init mpc837x_mds_setup_arch(void)
 		ppc_md.progress("mpc837x_mds_setup_arch()", 0);
 
 #ifdef CONFIG_PCI
-	for_each_compatible_node(np, "pci", "fsl,mpc8349-pci") {
-		if (!of_device_is_available(np)) {
-			pr_warning("%s: disabled by the firmware.\n",
-				   np->full_name);
-			continue;
-		}
+	for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
+		mpc83xx_add_bridge(np);
+	for_each_compatible_node(np, "pci", "fsl,mpc8314-pcie")
 		mpc83xx_add_bridge(np);
-	}
 #endif
 	mpc837xmds_usb_cfg();
 }
diff --git a/arch/powerpc/platforms/83xx/mpc837x_rdb.c b/arch/powerpc/platforms/83xx/mpc837x_rdb.c
index 1d096545322..3d7b953d40e 100644
--- a/arch/powerpc/platforms/83xx/mpc837x_rdb.c
+++ b/arch/powerpc/platforms/83xx/mpc837x_rdb.c
@@ -38,6 +38,8 @@ static void __init mpc837x_rdb_setup_arch(void)
 #ifdef CONFIG_PCI
 	for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
 		mpc83xx_add_bridge(np);
+	for_each_compatible_node(np, "pci", "fsl,mpc8314-pcie")
+		mpc83xx_add_bridge(np);
 #endif
 	mpc837x_usb_cfg();
 }
-- 
cgit v1.2.3


From bb2b66dca1c4cbe16d8208d4b2910cf0eb6e9f75 Mon Sep 17 00:00:00 2001
From: Martyn Welch <martyn.welch@gefanuc.com>
Date: Mon, 19 Jan 2009 11:33:24 +0000
Subject: powerpc/86xx: Board support for GE Fanuc SBC310

Support for the SBC310 VPX Single Board Computer from GE Fanuc (PowerPC
MPC8641D).

This is the basic board support for GE Fanuc's SBC310, a 3U single board
computer, based on Freescale's MPC8641D.

Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 arch/powerpc/platforms/86xx/Kconfig      |  10 +-
 arch/powerpc/platforms/86xx/Makefile     |   1 +
 arch/powerpc/platforms/86xx/gef_sbc310.c | 230 +++++++++++++++++++++++++++++++
 3 files changed, 240 insertions(+), 1 deletion(-)
 create mode 100644 arch/powerpc/platforms/86xx/gef_sbc310.c

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/86xx/Kconfig b/arch/powerpc/platforms/86xx/Kconfig
index 8e569393597..fa276c689cf 100644
--- a/arch/powerpc/platforms/86xx/Kconfig
+++ b/arch/powerpc/platforms/86xx/Kconfig
@@ -31,6 +31,14 @@ config MPC8610_HPCD
 	help
 	  This option enables support for the MPC8610 HPCD board.
 
+config GEF_SBC310
+	bool "GE Fanuc SBC310"
+	select DEFAULT_UIMAGE
+	select GENERIC_GPIO
+	select ARCH_REQUIRE_GPIOLIB
+	help
+	  This option enables support for GE Fanuc's SBC310.
+
 config GEF_SBC610
 	bool "GE Fanuc SBC610"
 	select DEFAULT_UIMAGE
@@ -48,7 +56,7 @@ config MPC8641
 	select FSL_PCI if PCI
 	select PPC_UDBG_16550
 	select MPIC
-	default y if MPC8641_HPCN || SBC8641D || GEF_SBC610
+	default y if MPC8641_HPCN || SBC8641D || GEF_SBC610 || GEF_SBC310
 
 config MPC8610
 	bool
diff --git a/arch/powerpc/platforms/86xx/Makefile b/arch/powerpc/platforms/86xx/Makefile
index 31e540c2ebb..7c080da4523 100644
--- a/arch/powerpc/platforms/86xx/Makefile
+++ b/arch/powerpc/platforms/86xx/Makefile
@@ -9,3 +9,4 @@ obj-$(CONFIG_SBC8641D)		+= sbc8641d.o
 obj-$(CONFIG_MPC8610_HPCD)	+= mpc8610_hpcd.o
 gef-gpio-$(CONFIG_GPIOLIB)	+= gef_gpio.o
 obj-$(CONFIG_GEF_SBC610)	+= gef_sbc610.o gef_pic.o $(gef-gpio-y)
+obj-$(CONFIG_GEF_SBC310)	+= gef_sbc310.o gef_pic.o $(gef-gpio-y)
diff --git a/arch/powerpc/platforms/86xx/gef_sbc310.c b/arch/powerpc/platforms/86xx/gef_sbc310.c
new file mode 100644
index 00000000000..0f20172af84
--- /dev/null
+++ b/arch/powerpc/platforms/86xx/gef_sbc310.c
@@ -0,0 +1,230 @@
+/*
+ * GE Fanuc SBC310 board support
+ *
+ * Author: Martyn Welch <martyn.welch@gefanuc.com>
+ *
+ * Copyright 2008 GE Fanuc Intelligent Platforms Embedded Systems, Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ *
+ * Based on: mpc86xx_hpcn.c (MPC86xx HPCN board specific routines)
+ * Copyright 2006 Freescale Semiconductor Inc.
+ *
+ * NEC fixup adapted from arch/mips/pci/fixup-lm2e.c
+ */
+
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/delay.h>
+#include <linux/seq_file.h>
+#include <linux/of_platform.h>
+
+#include <asm/system.h>
+#include <asm/time.h>
+#include <asm/machdep.h>
+#include <asm/pci-bridge.h>
+#include <asm/mpc86xx.h>
+#include <asm/prom.h>
+#include <mm/mmu_decl.h>
+#include <asm/udbg.h>
+
+#include <asm/mpic.h>
+
+#include <sysdev/fsl_pci.h>
+#include <sysdev/fsl_soc.h>
+
+#include "mpc86xx.h"
+#include "gef_pic.h"
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG (fmt...) do { printk(KERN_ERR "SBC310: " fmt); } while (0)
+#else
+#define DBG (fmt...) do { } while (0)
+#endif
+
+void __iomem *sbc310_regs;
+
+static void __init gef_sbc310_init_irq(void)
+{
+	struct device_node *cascade_node = NULL;
+
+	mpc86xx_init_irq();
+
+	/*
+	 * There is a simple interrupt handler in the main FPGA, this needs
+	 * to be cascaded into the MPIC
+	 */
+	cascade_node = of_find_compatible_node(NULL, NULL, "gef,fpga-pic");
+	if (!cascade_node) {
+		printk(KERN_WARNING "SBC310: No FPGA PIC\n");
+		return;
+	}
+
+	gef_pic_init(cascade_node);
+	of_node_put(cascade_node);
+}
+
+static void __init gef_sbc310_setup_arch(void)
+{
+	struct device_node *regs;
+#ifdef CONFIG_PCI
+	struct device_node *np;
+
+	for_each_compatible_node(np, "pci", "fsl,mpc8641-pcie") {
+		fsl_add_bridge(np, 1);
+	}
+#endif
+
+	printk(KERN_INFO "GE Fanuc Intelligent Platforms SBC310 6U VPX SBC\n");
+
+#ifdef CONFIG_SMP
+	mpc86xx_smp_init();
+#endif
+
+	/* Remap basic board registers */
+	regs = of_find_compatible_node(NULL, NULL, "gef,fpga-regs");
+	if (regs) {
+		sbc310_regs = of_iomap(regs, 0);
+		if (sbc310_regs == NULL)
+			printk(KERN_WARNING "Unable to map board registers\n");
+		of_node_put(regs);
+	}
+}
+
+/* Return the PCB revision */
+static unsigned int gef_sbc310_get_board_id(void)
+{
+	unsigned int reg;
+
+	reg = ioread32(sbc310_regs);
+	return reg & 0xff;
+}
+
+/* Return the PCB revision */
+static unsigned int gef_sbc310_get_pcb_rev(void)
+{
+	unsigned int reg;
+
+	reg = ioread32(sbc310_regs);
+	return (reg >> 8) & 0xff;
+}
+
+/* Return the board (software) revision */
+static unsigned int gef_sbc310_get_board_rev(void)
+{
+	unsigned int reg;
+
+	reg = ioread32(sbc310_regs);
+	return (reg >> 16) & 0xff;
+}
+
+/* Return the FPGA revision */
+static unsigned int gef_sbc310_get_fpga_rev(void)
+{
+	unsigned int reg;
+
+	reg = ioread32(sbc310_regs);
+	return (reg >> 24) & 0xf;
+}
+
+static void gef_sbc310_show_cpuinfo(struct seq_file *m)
+{
+	uint svid = mfspr(SPRN_SVR);
+
+	seq_printf(m, "Vendor\t\t: GE Fanuc Intelligent Platforms\n");
+
+	seq_printf(m, "Board ID\t: 0x%2.2x\n", gef_sbc310_get_board_id());
+	seq_printf(m, "Revision\t: %u%c\n", gef_sbc310_get_pcb_rev(),
+		('A' + gef_sbc310_get_board_rev() - 1));
+	seq_printf(m, "FPGA Revision\t: %u\n", gef_sbc310_get_fpga_rev());
+
+	seq_printf(m, "SVR\t\t: 0x%x\n", svid);
+
+}
+
+static void __init gef_sbc310_nec_fixup(struct pci_dev *pdev)
+{
+	unsigned int val;
+
+	printk(KERN_INFO "Running NEC uPD720101 Fixup\n");
+
+	/* Ensure only ports 1 & 2 are enabled */
+	pci_read_config_dword(pdev, 0xe0, &val);
+	pci_write_config_dword(pdev, 0xe0, (val & ~7) | 0x2);
+
+	/* System clock is 48-MHz Oscillator and EHCI Enabled. */
+	pci_write_config_dword(pdev, 0xe4, 1 << 5);
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB,
+	gef_sbc310_nec_fixup);
+
+/*
+ * Called very early, device-tree isn't unflattened
+ *
+ * This function is called to determine whether the BSP is compatible with the
+ * supplied device-tree, which is assumed to be the correct one for the actual
+ * board. It is expected thati, in the future, a kernel may support multiple
+ * boards.
+ */
+static int __init gef_sbc310_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	if (of_flat_dt_is_compatible(root, "gef,sbc310"))
+		return 1;
+
+	return 0;
+}
+
+static long __init mpc86xx_time_init(void)
+{
+	unsigned int temp;
+
+	/* Set the time base to zero */
+	mtspr(SPRN_TBWL, 0);
+	mtspr(SPRN_TBWU, 0);
+
+	temp = mfspr(SPRN_HID0);
+	temp |= HID0_TBEN;
+	mtspr(SPRN_HID0, temp);
+	asm volatile("isync");
+
+	return 0;
+}
+
+static __initdata struct of_device_id of_bus_ids[] = {
+	{ .compatible = "simple-bus", },
+	{},
+};
+
+static int __init declare_of_platform_devices(void)
+{
+	printk(KERN_DEBUG "Probe platform devices\n");
+	of_platform_bus_probe(NULL, of_bus_ids, NULL);
+
+	return 0;
+}
+machine_device_initcall(gef_sbc310, declare_of_platform_devices);
+
+define_machine(gef_sbc310) {
+	.name			= "GE Fanuc SBC310",
+	.probe			= gef_sbc310_probe,
+	.setup_arch		= gef_sbc310_setup_arch,
+	.init_IRQ		= gef_sbc310_init_irq,
+	.show_cpuinfo		= gef_sbc310_show_cpuinfo,
+	.get_irq		= mpic_get_irq,
+	.restart		= fsl_rstcr_restart,
+	.time_init		= mpc86xx_time_init,
+	.calibrate_decr		= generic_calibrate_decr,
+	.progress		= udbg_progress,
+#ifdef CONFIG_PCI
+	.pcibios_fixup_bus	= fsl_pcibios_fixup_bus,
+#endif
+};
-- 
cgit v1.2.3


From b1dd62f7f108a593abfc4bf425a3dd0885994680 Mon Sep 17 00:00:00 2001
From: Martyn Welch <martyn.welch@gefanuc.com>
Date: Mon, 19 Jan 2009 11:33:34 +0000
Subject: powerpc/86xx: Extend GE Fanuc GPIO driver for the SBC310

This patch adds basic support for the 6 GPIO lines found on GE Fanucs SBC310 to the GE Fanuc GPIO driver.

Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 arch/powerpc/platforms/86xx/gef_gpio.c | 36 +++++++++++++++++++++++++++++-----
 1 file changed, 31 insertions(+), 5 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/86xx/gef_gpio.c b/arch/powerpc/platforms/86xx/gef_gpio.c
index 85b2800f4cb..b2ea8875adb 100644
--- a/arch/powerpc/platforms/86xx/gef_gpio.c
+++ b/arch/powerpc/platforms/86xx/gef_gpio.c
@@ -37,8 +37,6 @@
 #define GEF_GPIO_OVERRUN	0x1C
 #define GEF_GPIO_MODE		0x20
 
-#define NUM_GPIO 19
-
 static void _gef_gpio_set(void __iomem *reg, unsigned int offset, int value)
 {
 	unsigned int data;
@@ -103,10 +101,10 @@ static void gef_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
 static int __init gef_gpio_init(void)
 {
 	struct device_node *np;
+	int retval;
+	struct of_mm_gpio_chip *gef_gpio_chip;
 
 	for_each_compatible_node(np, NULL, "gef,sbc610-gpio") {
-		int retval;
-		struct of_mm_gpio_chip *gef_gpio_chip;
 
 		pr_debug("%s: Initialising GEF GPIO\n", np->full_name);
 
@@ -120,7 +118,35 @@ static int __init gef_gpio_init(void)
 
 		/* Setup pointers to chip functions */
 		gef_gpio_chip->of_gc.gpio_cells = 2;
-		gef_gpio_chip->of_gc.gc.ngpio = NUM_GPIO;
+		gef_gpio_chip->of_gc.gc.ngpio = 19;
+		gef_gpio_chip->of_gc.gc.direction_input = gef_gpio_dir_in;
+		gef_gpio_chip->of_gc.gc.direction_output = gef_gpio_dir_out;
+		gef_gpio_chip->of_gc.gc.get = gef_gpio_get;
+		gef_gpio_chip->of_gc.gc.set = gef_gpio_set;
+
+		/* This function adds a memory mapped GPIO chip */
+		retval = of_mm_gpiochip_add(np, gef_gpio_chip);
+		if (retval) {
+			kfree(gef_gpio_chip);
+			pr_err("%s: Unable to add GPIO\n", np->full_name);
+		}
+	}
+
+	for_each_compatible_node(np, NULL, "gef,sbc310-gpio") {
+
+		pr_debug("%s: Initialising GEF GPIO\n", np->full_name);
+
+		/* Allocate chip structure */
+		gef_gpio_chip = kzalloc(sizeof(*gef_gpio_chip), GFP_KERNEL);
+		if (!gef_gpio_chip) {
+			pr_err("%s: Unable to allocate structure\n",
+				np->full_name);
+			continue;
+		}
+
+		/* Setup pointers to chip functions */
+		gef_gpio_chip->of_gc.gpio_cells = 2;
+		gef_gpio_chip->of_gc.gc.ngpio = 6;
 		gef_gpio_chip->of_gc.gc.direction_input = gef_gpio_dir_in;
 		gef_gpio_chip->of_gc.gc.direction_output = gef_gpio_dir_out;
 		gef_gpio_chip->of_gc.gc.get = gef_gpio_get;
-- 
cgit v1.2.3


From bc4346fe2733dcca723d6b8f188bc44b54eac847 Mon Sep 17 00:00:00 2001
From: Grant Likely <grant.likely@secretlab.ca>
Date: Wed, 4 Feb 2009 11:23:56 -0700
Subject: powerpc/5200: Remove pr_debug() from hot paths in irq driver

pr_debug() calls in the 'hot' *_mask(), *_unmask(), *_ack() and
get_irq() makes adding #define DEBUG pretty much useless.  Remove
these calls because they completely swamp the output.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
---
 arch/powerpc/platforms/52xx/mpc52xx_pic.c | 23 -----------------------
 1 file changed, 23 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pic.c b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
index 0a093f03c75..c0a95592050 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_pic.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
@@ -163,8 +163,6 @@ static void mpc52xx_extirq_mask(unsigned int virq)
 	irq = irq_map[virq].hwirq;
 	l2irq = irq & MPC52xx_IRQ_L2_MASK;
 
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
 	io_be_clrbit(&intr->ctrl, 11 - l2irq);
 }
 
@@ -176,8 +174,6 @@ static void mpc52xx_extirq_unmask(unsigned int virq)
 	irq = irq_map[virq].hwirq;
 	l2irq = irq & MPC52xx_IRQ_L2_MASK;
 
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
 	io_be_setbit(&intr->ctrl, 11 - l2irq);
 }
 
@@ -189,8 +185,6 @@ static void mpc52xx_extirq_ack(unsigned int virq)
 	irq = irq_map[virq].hwirq;
 	l2irq = irq & MPC52xx_IRQ_L2_MASK;
 
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
 	io_be_setbit(&intr->ctrl, 27-l2irq);
 }
 
@@ -255,8 +249,6 @@ static void mpc52xx_main_mask(unsigned int virq)
 	irq = irq_map[virq].hwirq;
 	l2irq = irq & MPC52xx_IRQ_L2_MASK;
 
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
 	io_be_setbit(&intr->main_mask, 16 - l2irq);
 }
 
@@ -268,8 +260,6 @@ static void mpc52xx_main_unmask(unsigned int virq)
 	irq = irq_map[virq].hwirq;
 	l2irq = irq & MPC52xx_IRQ_L2_MASK;
 
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
 	io_be_clrbit(&intr->main_mask, 16 - l2irq);
 }
 
@@ -291,8 +281,6 @@ static void mpc52xx_periph_mask(unsigned int virq)
 	irq = irq_map[virq].hwirq;
 	l2irq = irq & MPC52xx_IRQ_L2_MASK;
 
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
 	io_be_setbit(&intr->per_mask, 31 - l2irq);
 }
 
@@ -304,8 +292,6 @@ static void mpc52xx_periph_unmask(unsigned int virq)
 	irq = irq_map[virq].hwirq;
 	l2irq = irq & MPC52xx_IRQ_L2_MASK;
 
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
 	io_be_clrbit(&intr->per_mask, 31 - l2irq);
 }
 
@@ -327,8 +313,6 @@ static void mpc52xx_sdma_mask(unsigned int virq)
 	irq = irq_map[virq].hwirq;
 	l2irq = irq & MPC52xx_IRQ_L2_MASK;
 
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
 	io_be_setbit(&sdma->IntMask, l2irq);
 }
 
@@ -340,8 +324,6 @@ static void mpc52xx_sdma_unmask(unsigned int virq)
 	irq = irq_map[virq].hwirq;
 	l2irq = irq & MPC52xx_IRQ_L2_MASK;
 
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
 	io_be_clrbit(&sdma->IntMask, l2irq);
 }
 
@@ -353,8 +335,6 @@ static void mpc52xx_sdma_ack(unsigned int virq)
 	irq = irq_map[virq].hwirq;
 	l2irq = irq & MPC52xx_IRQ_L2_MASK;
 
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
 	out_be32(&sdma->IntPend, 1 << l2irq);
 }
 
@@ -613,8 +593,5 @@ unsigned int mpc52xx_get_irq(void)
 		}
 	}
 
-	pr_debug("%s: irq=%x. virq=%d\n", __func__, irq,
-		 irq_linear_revmap(mpc52xx_irqhost, irq));
-
 	return irq_linear_revmap(mpc52xx_irqhost, irq);
 }
-- 
cgit v1.2.3


From 8f2558ded599c10d96a56fbf12849a27f6ab7997 Mon Sep 17 00:00:00 2001
From: Grant Likely <grant.likely@secretlab.ca>
Date: Wed, 4 Feb 2009 13:33:20 -0700
Subject: powerpc/5200: Refactor mpc5200 interrupt controller driver

Rework the mpc5200-pic driver to simplify it and fix up the setting
of desc->status when set_type is called for internal IRQs (so they
are reported as level, not edge).  The simplification is due to
splitting off the handling of external IRQs into a separate block
so they don't need to be handled as exceptions in the normal
CRIT, MAIN and PERP paths.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---
 arch/powerpc/platforms/52xx/mpc52xx_pic.c | 147 ++++++++++++------------------
 1 file changed, 59 insertions(+), 88 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pic.c b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
index c0a95592050..480f806fd0a 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_pic.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
@@ -190,10 +190,10 @@ static void mpc52xx_extirq_ack(unsigned int virq)
 
 static int mpc52xx_extirq_set_type(unsigned int virq, unsigned int flow_type)
 {
-	struct irq_desc *desc = get_irq_desc(virq);
 	u32 ctrl_reg, type;
 	int irq;
 	int l2irq;
+	void *handler = handle_level_irq;
 
 	irq = irq_map[virq].hwirq;
 	l2irq = irq & MPC52xx_IRQ_L2_MASK;
@@ -201,32 +201,21 @@ static int mpc52xx_extirq_set_type(unsigned int virq, unsigned int flow_type)
 	pr_debug("%s: irq=%x. l2=%d flow_type=%d\n", __func__, irq, l2irq, flow_type);
 
 	switch (flow_type) {
-	case IRQF_TRIGGER_HIGH:
-		type = 0;
-		break;
-	case IRQF_TRIGGER_RISING:
-		type = 1;
-		break;
-	case IRQF_TRIGGER_FALLING:
-		type = 2;
-		break;
-	case IRQF_TRIGGER_LOW:
-		type = 3;
-		break;
+	case IRQF_TRIGGER_HIGH: type = 0; break;
+	case IRQF_TRIGGER_RISING: type = 1; handler = handle_edge_irq; break;
+	case IRQF_TRIGGER_FALLING: type = 2; handler = handle_edge_irq; break;
+	case IRQF_TRIGGER_LOW: type = 3; break;
 	default:
 		type = 0;
 	}
 
-	desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
-	desc->status |= flow_type & IRQ_TYPE_SENSE_MASK;
-	if (flow_type & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW))
-		desc->status |= IRQ_LEVEL;
-
 	ctrl_reg = in_be32(&intr->ctrl);
 	ctrl_reg &= ~(0x3 << (22 - (l2irq * 2)));
 	ctrl_reg |= (type << (22 - (l2irq * 2)));
 	out_be32(&intr->ctrl, ctrl_reg);
 
+	__set_irq_handler_unlocked(virq, handler);
+
 	return 0;
 }
 
@@ -241,6 +230,11 @@ static struct irq_chip mpc52xx_extirq_irqchip = {
 /*
  * Main interrupt irq_chip
  */
+static int mpc52xx_null_set_type(unsigned int virq, unsigned int flow_type)
+{
+	return 0; /* Do nothing so that the sense mask will get updated */
+}
+
 static void mpc52xx_main_mask(unsigned int virq)
 {
 	int irq;
@@ -268,6 +262,7 @@ static struct irq_chip mpc52xx_main_irqchip = {
 	.mask = mpc52xx_main_mask,
 	.mask_ack = mpc52xx_main_mask,
 	.unmask = mpc52xx_main_unmask,
+	.set_type = mpc52xx_null_set_type,
 };
 
 /*
@@ -300,6 +295,7 @@ static struct irq_chip mpc52xx_periph_irqchip = {
 	.mask = mpc52xx_periph_mask,
 	.mask_ack = mpc52xx_periph_mask,
 	.unmask = mpc52xx_periph_unmask,
+	.set_type = mpc52xx_null_set_type,
 };
 
 /*
@@ -343,8 +339,18 @@ static struct irq_chip mpc52xx_sdma_irqchip = {
 	.mask = mpc52xx_sdma_mask,
 	.unmask = mpc52xx_sdma_unmask,
 	.ack = mpc52xx_sdma_ack,
+	.set_type = mpc52xx_null_set_type,
 };
 
+/**
+ * mpc52xx_is_extirq - Returns true if hwirq number is for an external IRQ
+ */
+static int mpc52xx_is_extirq(int l1, int l2)
+{
+	return ((l1 == 0) && (l2 == 0)) ||
+	       ((l1 == 1) && (l2 >= 1) && (l2 <= 3));
+}
+
 /**
  * mpc52xx_irqhost_xlate - translate virq# from device tree interrupts property
  */
@@ -363,37 +369,22 @@ static int mpc52xx_irqhost_xlate(struct irq_host *h, struct device_node *ct,
 
 	intrvect_l1 = (int)intspec[0];
 	intrvect_l2 = (int)intspec[1];
-	intrvect_type = (int)intspec[2];
+	intrvect_type = (int)intspec[2] & 0x3;
 
 	intrvect_linux = (intrvect_l1 << MPC52xx_IRQ_L1_OFFSET) &
 			 MPC52xx_IRQ_L1_MASK;
 	intrvect_linux |= intrvect_l2 & MPC52xx_IRQ_L2_MASK;
 
-	pr_debug("return %x, l1=%d, l2=%d\n", intrvect_linux, intrvect_l1,
-		 intrvect_l2);
-
 	*out_hwirq = intrvect_linux;
-	*out_flags = mpc52xx_map_senses[intrvect_type];
+	*out_flags = IRQ_TYPE_LEVEL_LOW;
+	if (mpc52xx_is_extirq(intrvect_l1, intrvect_l2))
+		*out_flags = mpc52xx_map_senses[intrvect_type];
 
+	pr_debug("return %x, l1=%d, l2=%d\n", intrvect_linux, intrvect_l1,
+		 intrvect_l2);
 	return 0;
 }
 
-/**
- * mpc52xx_irqx_gettype - determine the IRQ sense type (level/edge)
- *
- * Only external IRQs need this.
- */
-static int mpc52xx_irqx_gettype(int irq)
-{
-	int type;
-	u32 ctrl_reg;
-
-	ctrl_reg = in_be32(&intr->ctrl);
-	type = (ctrl_reg >> (22 - irq * 2)) & 0x3;
-
-	return mpc52xx_map_senses[type];
-}
-
 /**
  * mpc52xx_irqhost_map - Hook to map from virq to an irq_chip structure
  */
@@ -402,68 +393,46 @@ static int mpc52xx_irqhost_map(struct irq_host *h, unsigned int virq,
 {
 	int l1irq;
 	int l2irq;
-	struct irq_chip *good_irqchip;
-	void *good_handle;
+	struct irq_chip *irqchip;
+	void *hndlr;
 	int type;
+	u32 reg;
 
 	l1irq = (irq & MPC52xx_IRQ_L1_MASK) >> MPC52xx_IRQ_L1_OFFSET;
 	l2irq = irq & MPC52xx_IRQ_L2_MASK;
 
 	/*
-	 * Most of ours IRQs will be level low
-	 * Only external IRQs on some platform may be others
+	 * External IRQs are handled differently by the hardware so they are
+	 * handled by a dedicated irq_chip structure.
 	 */
-	type = IRQ_TYPE_LEVEL_LOW;
+	if (mpc52xx_is_extirq(l1irq, l2irq)) {
+		reg = in_be32(&intr->ctrl);
+		type = mpc52xx_map_senses[(reg >> (22 - l2irq * 2)) & 0x3];
+		if ((type == IRQ_TYPE_EDGE_FALLING) ||
+		    (type == IRQ_TYPE_EDGE_RISING))
+			hndlr = handle_edge_irq;
+		else
+			hndlr = handle_level_irq;
+
+		set_irq_chip_and_handler(virq, &mpc52xx_extirq_irqchip, hndlr);
+		pr_debug("%s: External IRQ%i virq=%x, hw=%x. type=%x\n",
+			 __func__, l2irq, virq, (int)irq, type);
+		return 0;
+	}
 
+	/* It is an internal SOC irq.  Choose the correct irq_chip */
 	switch (l1irq) {
-	case MPC52xx_IRQ_L1_CRIT:
-		pr_debug("%s: Critical. l2=%x\n", __func__, l2irq);
-
-		BUG_ON(l2irq != 0);
-
-		type = mpc52xx_irqx_gettype(l2irq);
-		good_irqchip = &mpc52xx_extirq_irqchip;
-		break;
-
-	case MPC52xx_IRQ_L1_MAIN:
-		pr_debug("%s: Main IRQ[1-3] l2=%x\n", __func__, l2irq);
-
-		if ((l2irq >= 1) && (l2irq <= 3)) {
-			type = mpc52xx_irqx_gettype(l2irq);
-			good_irqchip = &mpc52xx_extirq_irqchip;
-		} else {
-			good_irqchip = &mpc52xx_main_irqchip;
-		}
-		break;
-
-	case MPC52xx_IRQ_L1_PERP:
-		pr_debug("%s: Peripherals. l2=%x\n", __func__, l2irq);
-		good_irqchip = &mpc52xx_periph_irqchip;
-		break;
-
-	case MPC52xx_IRQ_L1_SDMA:
-		pr_debug("%s: SDMA. l2=%x\n", __func__, l2irq);
-		good_irqchip = &mpc52xx_sdma_irqchip;
-		break;
-
+	case MPC52xx_IRQ_L1_MAIN: irqchip = &mpc52xx_main_irqchip; break;
+	case MPC52xx_IRQ_L1_PERP: irqchip = &mpc52xx_periph_irqchip; break;
+	case MPC52xx_IRQ_L1_SDMA: irqchip = &mpc52xx_sdma_irqchip; break;
 	default:
-		pr_err("%s: invalid virq requested (0x%x)\n", __func__, virq);
+		pr_err("%s: invalid irq: virq=%i, l1=%i, l2=%i\n",
+		       __func__, virq, l1irq, l2irq);
 		return -EINVAL;
 	}
 
-	switch (type) {
-	case IRQ_TYPE_EDGE_FALLING:
-	case IRQ_TYPE_EDGE_RISING:
-		good_handle = handle_edge_irq;
-		break;
-	default:
-		good_handle = handle_level_irq;
-	}
-
-	set_irq_chip_and_handler(virq, good_irqchip, good_handle);
-
-	pr_debug("%s: virq=%x, hw=%x. type=%x\n", __func__, virq,
-		 (int)irq, type);
+	set_irq_chip_and_handler(virq, irqchip, handle_level_irq);
+	pr_debug("%s: virq=%x, l1=%i, l2=%i\n", __func__, virq, l1irq, l2irq);
 
 	return 0;
 }
@@ -502,6 +471,8 @@ void __init mpc52xx_init_irq(void)
 		panic(__FILE__	": find_and_map failed on 'mpc5200-bestcomm'. "
 				"Check node !");
 
+	pr_debug("MPC5200 IRQ controller mapped to 0x%p\n", intr);
+
 	/* Disable all interrupt sources. */
 	out_be32(&sdma->IntPend, 0xffffffff);	/* 1 means clear pending */
 	out_be32(&sdma->IntMask, 0xffffffff);	/* 1 means disabled */
-- 
cgit v1.2.3


From 5496eab2434f2a2dfe0d35496fd9605d548b7fbc Mon Sep 17 00:00:00 2001
From: Grant Likely <grant.likely@secretlab.ca>
Date: Wed, 4 Feb 2009 13:35:42 -0700
Subject: powerpc/5200: Rework GPT driver to also be an IRQ controller

This patch adds IRQ controller support to the MPC5200 General
Purpose Timer (GPT) device driver.  With this patch the mpc5200-gpt
driver supports both GPIO and IRQ functions.

The GPT driver was contained within the mpc52xx_gpio.c file, but this
patch moves it out into a new file (mpc52xx_gpt.c) since it has more
than just GPIO functionality now and it was only grouped with the
mpc52xx-gpio drivers as a matter of convenience before.  Also, this
driver will most likely get extended again to also provide support
for the timer function.

Implementation note: Alternately, I could have tried to implement
the IRQ support as a separate driver and left the GPIO portion alone.
However, multiple functions of this device (ie. GPIO input+interrupt
controller, or timer+GPIO) can be active at the same time and the
registers are shared so it is safer to contain all functionality
within a single driver.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
---
 arch/powerpc/platforms/52xx/Makefile       |   2 +-
 arch/powerpc/platforms/52xx/mpc52xx_gpio.c |  85 ------
 arch/powerpc/platforms/52xx/mpc52xx_gpt.c  | 435 +++++++++++++++++++++++++++++
 3 files changed, 436 insertions(+), 86 deletions(-)
 create mode 100644 arch/powerpc/platforms/52xx/mpc52xx_gpt.c

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/52xx/Makefile b/arch/powerpc/platforms/52xx/Makefile
index b8a52062738..d6ade3d5f19 100644
--- a/arch/powerpc/platforms/52xx/Makefile
+++ b/arch/powerpc/platforms/52xx/Makefile
@@ -1,7 +1,7 @@
 #
 # Makefile for 52xx based boards
 #
-obj-y				+= mpc52xx_pic.o mpc52xx_common.o
+obj-y				+= mpc52xx_pic.o mpc52xx_common.o mpc52xx_gpt.o
 obj-$(CONFIG_PCI)		+= mpc52xx_pci.o
 
 obj-$(CONFIG_PPC_MPC5200_SIMPLE) += mpc5200_simple.o
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_gpio.c b/arch/powerpc/platforms/52xx/mpc52xx_gpio.c
index 07f89ae46d0..2b8d8ef32e4 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_gpio.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_gpio.c
@@ -354,88 +354,6 @@ static struct of_platform_driver mpc52xx_simple_gpiochip_driver = {
 	.remove = mpc52xx_gpiochip_remove,
 };
 
-/*
- * GPIO LIB API implementation for gpt GPIOs.
- *
- * Each gpt only has a single GPIO.
- */
-static int mpc52xx_gpt_gpio_get(struct gpio_chip *gc, unsigned int gpio)
-{
-	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
-	struct mpc52xx_gpt __iomem *regs = mm_gc->regs;
-
-	return (in_be32(&regs->status) & (1 << (31 - 23))) ? 1 : 0;
-}
-
-static void
-mpc52xx_gpt_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
-{
-	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
-	struct mpc52xx_gpt __iomem *regs = mm_gc->regs;
-
-	if (val)
-		out_be32(&regs->mode, 0x34);
-	else
-		out_be32(&regs->mode, 0x24);
-
-	pr_debug("%s: gpio: %d val: %d\n", __func__, gpio, val);
-}
-
-static int mpc52xx_gpt_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
-{
-	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
-	struct mpc52xx_gpt __iomem *regs = mm_gc->regs;
-
-	out_be32(&regs->mode, 0x04);
-
-	return 0;
-}
-
-static int
-mpc52xx_gpt_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
-{
-	mpc52xx_gpt_gpio_set(gc, gpio, val);
-	pr_debug("%s: gpio: %d val: %d\n", __func__, gpio, val);
-
-	return 0;
-}
-
-static int __devinit mpc52xx_gpt_gpiochip_probe(struct of_device *ofdev,
-					const struct of_device_id *match)
-{
-	struct of_mm_gpio_chip *mmchip;
-	struct of_gpio_chip *chip;
-
-	mmchip = kzalloc(sizeof(*mmchip), GFP_KERNEL);
-	if (!mmchip)
-		return -ENOMEM;
-
-	chip = &mmchip->of_gc;
-
-	chip->gpio_cells          = 2;
-	chip->gc.ngpio            = 1;
-	chip->gc.direction_input  = mpc52xx_gpt_gpio_dir_in;
-	chip->gc.direction_output = mpc52xx_gpt_gpio_dir_out;
-	chip->gc.get              = mpc52xx_gpt_gpio_get;
-	chip->gc.set              = mpc52xx_gpt_gpio_set;
-
-	return of_mm_gpiochip_add(ofdev->node, mmchip);
-}
-
-static const struct of_device_id mpc52xx_gpt_gpiochip_match[] = {
-	{
-		.compatible = "fsl,mpc5200-gpt-gpio",
-	},
-	{}
-};
-
-static struct of_platform_driver mpc52xx_gpt_gpiochip_driver = {
-	.name = "gpio_gpt",
-	.match_table = mpc52xx_gpt_gpiochip_match,
-	.probe = mpc52xx_gpt_gpiochip_probe,
-	.remove = mpc52xx_gpiochip_remove,
-};
-
 static int __init mpc52xx_gpio_init(void)
 {
 	if (of_register_platform_driver(&mpc52xx_wkup_gpiochip_driver))
@@ -444,9 +362,6 @@ static int __init mpc52xx_gpio_init(void)
 	if (of_register_platform_driver(&mpc52xx_simple_gpiochip_driver))
 		printk(KERN_ERR "Unable to register simple GPIO driver\n");
 
-	if (of_register_platform_driver(&mpc52xx_gpt_gpiochip_driver))
-		printk(KERN_ERR "Unable to register gpt GPIO driver\n");
-
 	return 0;
 }
 
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
new file mode 100644
index 00000000000..cb038dc67a8
--- /dev/null
+++ b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
@@ -0,0 +1,435 @@
+/*
+ * MPC5200 General Purpose Timer device driver
+ *
+ * Copyright (c) 2009 Secret Lab Technologies Ltd.
+ * Copyright (c) 2008 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ *
+ * This file is a driver for the the General Purpose Timer (gpt) devices
+ * found on the MPC5200 SoC.  Each timer has an IO pin which can be used
+ * for GPIO or can be used to raise interrupts.  The timer function can
+ * be used independently from the IO pin, or it can be used to control
+ * output signals or measure input signals.
+ *
+ * This driver supports the GPIO and IRQ controller functions of the GPT
+ * device.  Timer functions are not yet supported, nor is the watchdog
+ * timer.
+ *
+ * To use the GPIO function, the following two properties must be added
+ * to the device tree node for the gpt device (typically in the .dts file
+ * for the board):
+ * 	gpio-controller;
+ * 	#gpio-cells = < 2 >;
+ * This driver will register the GPIO pin if it finds the gpio-controller
+ * property in the device tree.
+ *
+ * To use the IRQ controller function, the following two properties must
+ * be added to the device tree node for the gpt device:
+ * 	interrupt-controller;
+ * 	#interrupt-cells = < 1 >;
+ * The IRQ controller binding only uses one cell to specify the interrupt,
+ * and the IRQ flags are encoded in the cell.  A cell is not used to encode
+ * the IRQ number because the GPT only has a single IRQ source.  For flags,
+ * a value of '1' means rising edge sensitive and '2' means falling edge.
+ *
+ * The GPIO and the IRQ controller functions can be used at the same time,
+ * but in this use case the IO line will only work as an input.  Trying to
+ * use it as a GPIO output will not work.
+ *
+ * When using the GPIO line as an output, it can either be driven as normal
+ * IO, or it can be an Open Collector (OC) output.  At the moment it is the
+ * responsibility of either the bootloader or the platform setup code to set
+ * the output mode.  This driver does not change the output mode setting.
+ */
+
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/of_gpio.h>
+#include <linux/kernel.h>
+#include <asm/mpc52xx.h>
+
+MODULE_DESCRIPTION("Freescale MPC52xx gpt driver");
+MODULE_AUTHOR("Sascha Hauer, Grant Likely");
+MODULE_LICENSE("GPL");
+
+/**
+ * struct mpc52xx_gpt - Private data structure for MPC52xx GPT driver
+ * @dev: pointer to device structure
+ * @regs: virtual address of GPT registers
+ * @lock: spinlock to coordinate between different functions.
+ * @of_gc: of_gpio_chip instance structure; used when GPIO is enabled
+ * @irqhost: Pointer to irq_host instance; used when IRQ mode is supported
+ */
+struct mpc52xx_gpt_priv {
+	struct device *dev;
+	struct mpc52xx_gpt __iomem *regs;
+	spinlock_t lock;
+	struct irq_host *irqhost;
+
+#if defined(CONFIG_GPIOLIB)
+	struct of_gpio_chip of_gc;
+#endif
+};
+
+#define MPC52xx_GPT_MODE_MS_MASK	(0x07)
+#define MPC52xx_GPT_MODE_MS_IC		(0x01)
+#define MPC52xx_GPT_MODE_MS_OC		(0x02)
+#define MPC52xx_GPT_MODE_MS_PWM		(0x03)
+#define MPC52xx_GPT_MODE_MS_GPIO	(0x04)
+
+#define MPC52xx_GPT_MODE_GPIO_MASK	(0x30)
+#define MPC52xx_GPT_MODE_GPIO_OUT_LOW	(0x20)
+#define MPC52xx_GPT_MODE_GPIO_OUT_HIGH	(0x30)
+
+#define MPC52xx_GPT_MODE_IRQ_EN		(0x0100)
+
+#define MPC52xx_GPT_MODE_ICT_MASK	(0x030000)
+#define MPC52xx_GPT_MODE_ICT_RISING	(0x010000)
+#define MPC52xx_GPT_MODE_ICT_FALLING	(0x020000)
+#define MPC52xx_GPT_MODE_ICT_TOGGLE	(0x030000)
+
+#define MPC52xx_GPT_STATUS_IRQMASK	(0x000f)
+
+/* ---------------------------------------------------------------------
+ * Cascaded interrupt controller hooks
+ */
+
+static void mpc52xx_gpt_irq_unmask(unsigned int virq)
+{
+	struct mpc52xx_gpt_priv *gpt = get_irq_chip_data(virq);
+	unsigned long flags;
+
+	spin_lock_irqsave(&gpt->lock, flags);
+	setbits32(&gpt->regs->mode, MPC52xx_GPT_MODE_IRQ_EN);
+	spin_unlock_irqrestore(&gpt->lock, flags);
+}
+
+static void mpc52xx_gpt_irq_mask(unsigned int virq)
+{
+	struct mpc52xx_gpt_priv *gpt = get_irq_chip_data(virq);
+	unsigned long flags;
+
+	spin_lock_irqsave(&gpt->lock, flags);
+	clrbits32(&gpt->regs->mode, MPC52xx_GPT_MODE_IRQ_EN);
+	spin_unlock_irqrestore(&gpt->lock, flags);
+}
+
+static void mpc52xx_gpt_irq_ack(unsigned int virq)
+{
+	struct mpc52xx_gpt_priv *gpt = get_irq_chip_data(virq);
+
+	out_be32(&gpt->regs->status, MPC52xx_GPT_STATUS_IRQMASK);
+}
+
+static int mpc52xx_gpt_irq_set_type(unsigned int virq, unsigned int flow_type)
+{
+	struct mpc52xx_gpt_priv *gpt = get_irq_chip_data(virq);
+	unsigned long flags;
+	u32 reg;
+
+	dev_dbg(gpt->dev, "%s: virq=%i type=%x\n", __func__, virq, flow_type);
+
+	spin_lock_irqsave(&gpt->lock, flags);
+	reg = in_be32(&gpt->regs->mode) & ~MPC52xx_GPT_MODE_ICT_MASK;
+	if (flow_type & IRQF_TRIGGER_RISING)
+		reg |= MPC52xx_GPT_MODE_ICT_RISING;
+	if (flow_type & IRQF_TRIGGER_FALLING)
+		reg |= MPC52xx_GPT_MODE_ICT_FALLING;
+	out_be32(&gpt->regs->mode, reg);
+	spin_unlock_irqrestore(&gpt->lock, flags);
+
+	return 0;
+}
+
+static struct irq_chip mpc52xx_gpt_irq_chip = {
+	.typename = "MPC52xx GPT",
+	.unmask = mpc52xx_gpt_irq_unmask,
+	.mask = mpc52xx_gpt_irq_mask,
+	.ack = mpc52xx_gpt_irq_ack,
+	.set_type = mpc52xx_gpt_irq_set_type,
+};
+
+void mpc52xx_gpt_irq_cascade(unsigned int virq, struct irq_desc *desc)
+{
+	struct mpc52xx_gpt_priv *gpt = get_irq_data(virq);
+	int sub_virq;
+	u32 status;
+
+	status = in_be32(&gpt->regs->status) & MPC52xx_GPT_STATUS_IRQMASK;
+	if (status) {
+		sub_virq = irq_linear_revmap(gpt->irqhost, 0);
+		generic_handle_irq(sub_virq);
+	}
+}
+
+static int mpc52xx_gpt_irq_map(struct irq_host *h, unsigned int virq,
+			       irq_hw_number_t hw)
+{
+	struct mpc52xx_gpt_priv *gpt = h->host_data;
+
+	dev_dbg(gpt->dev, "%s: h=%p, virq=%i\n", __func__, h, virq);
+	set_irq_chip_data(virq, gpt);
+	set_irq_chip_and_handler(virq, &mpc52xx_gpt_irq_chip, handle_edge_irq);
+
+	return 0;
+}
+
+static int mpc52xx_gpt_irq_xlate(struct irq_host *h, struct device_node *ct,
+				 u32 *intspec, unsigned int intsize,
+				 irq_hw_number_t *out_hwirq,
+				 unsigned int *out_flags)
+{
+	struct mpc52xx_gpt_priv *gpt = h->host_data;
+
+	dev_dbg(gpt->dev, "%s: flags=%i\n", __func__, intspec[0]);
+
+	if ((intsize < 1) || (intspec[0] < 1) || (intspec[0] > 3)) {
+		dev_err(gpt->dev, "bad irq specifier in %s\n", ct->full_name);
+		return -EINVAL;
+	}
+
+	*out_hwirq = 0; /* The GPT only has 1 IRQ line */
+	*out_flags = intspec[0];
+
+	return 0;
+}
+
+static struct irq_host_ops mpc52xx_gpt_irq_ops = {
+	.map = mpc52xx_gpt_irq_map,
+	.xlate = mpc52xx_gpt_irq_xlate,
+};
+
+static void
+mpc52xx_gpt_irq_setup(struct mpc52xx_gpt_priv *gpt, struct device_node *node)
+{
+	int cascade_virq;
+	unsigned long flags;
+
+	/* Only setup cascaded IRQ if device tree claims the GPT is
+	 * an interrupt controller */
+	if (!of_find_property(node, "interrupt-controller", NULL))
+		return;
+
+	cascade_virq = irq_of_parse_and_map(node, 0);
+
+	gpt->irqhost = irq_alloc_host(node, IRQ_HOST_MAP_LINEAR, 1,
+				      &mpc52xx_gpt_irq_ops, -1);
+	if (!gpt->irqhost) {
+		dev_err(gpt->dev, "irq_alloc_host() failed\n");
+		return;
+	}
+
+	gpt->irqhost->host_data = gpt;
+
+	set_irq_data(cascade_virq, gpt);
+	set_irq_chained_handler(cascade_virq, mpc52xx_gpt_irq_cascade);
+
+	/* Set to Input Capture mode */
+	spin_lock_irqsave(&gpt->lock, flags);
+	clrsetbits_be32(&gpt->regs->mode, MPC52xx_GPT_MODE_MS_MASK,
+			MPC52xx_GPT_MODE_MS_IC);
+	spin_unlock_irqrestore(&gpt->lock, flags);
+
+	dev_dbg(gpt->dev, "%s() complete. virq=%i\n", __func__, cascade_virq);
+}
+
+
+/* ---------------------------------------------------------------------
+ * GPIOLIB hooks
+ */
+#if defined(CONFIG_GPIOLIB)
+static inline struct mpc52xx_gpt_priv *gc_to_mpc52xx_gpt(struct gpio_chip *gc)
+{
+	return container_of(to_of_gpio_chip(gc), struct mpc52xx_gpt_priv,of_gc);
+}
+
+static int mpc52xx_gpt_gpio_get(struct gpio_chip *gc, unsigned int gpio)
+{
+	struct mpc52xx_gpt_priv *gpt = gc_to_mpc52xx_gpt(gc);
+
+	return (in_be32(&gpt->regs->status) >> 8) & 1;
+}
+
+static void
+mpc52xx_gpt_gpio_set(struct gpio_chip *gc, unsigned int gpio, int v)
+{
+	struct mpc52xx_gpt_priv *gpt = gc_to_mpc52xx_gpt(gc);
+	unsigned long flags;
+	u32 r;
+
+	dev_dbg(gpt->dev, "%s: gpio:%d v:%d\n", __func__, gpio, v);
+	r = v ? MPC52xx_GPT_MODE_GPIO_OUT_HIGH : MPC52xx_GPT_MODE_GPIO_OUT_LOW;
+
+	spin_lock_irqsave(&gpt->lock, flags);
+	clrsetbits_be32(&gpt->regs->mode, MPC52xx_GPT_MODE_GPIO_MASK, r);
+	spin_unlock_irqrestore(&gpt->lock, flags);
+}
+
+static int mpc52xx_gpt_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
+{
+	struct mpc52xx_gpt_priv *gpt = gc_to_mpc52xx_gpt(gc);
+	unsigned long flags;
+
+	dev_dbg(gpt->dev, "%s: gpio:%d\n", __func__, gpio);
+
+	spin_lock_irqsave(&gpt->lock, flags);
+	clrbits32(&gpt->regs->mode, MPC52xx_GPT_MODE_GPIO_MASK);
+	spin_unlock_irqrestore(&gpt->lock, flags);
+
+	return 0;
+}
+
+static int
+mpc52xx_gpt_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
+{
+	mpc52xx_gpt_gpio_set(gc, gpio, val);
+	return 0;
+}
+
+static void
+mpc52xx_gpt_gpio_setup(struct mpc52xx_gpt_priv *gpt, struct device_node *node)
+{
+	int rc;
+
+	/* Only setup GPIO if the device tree claims the GPT is
+	 * a GPIO controller */
+	if (!of_find_property(node, "gpio-controller", NULL))
+		return;
+
+	gpt->of_gc.gc.label = kstrdup(node->full_name, GFP_KERNEL);
+	if (!gpt->of_gc.gc.label) {
+		dev_err(gpt->dev, "out of memory\n");
+		return;
+	}
+
+	gpt->of_gc.gpio_cells = 2;
+	gpt->of_gc.gc.ngpio = 1;
+	gpt->of_gc.gc.direction_input  = mpc52xx_gpt_gpio_dir_in;
+	gpt->of_gc.gc.direction_output = mpc52xx_gpt_gpio_dir_out;
+	gpt->of_gc.gc.get = mpc52xx_gpt_gpio_get;
+	gpt->of_gc.gc.set = mpc52xx_gpt_gpio_set;
+	gpt->of_gc.gc.base = -1;
+	gpt->of_gc.xlate = of_gpio_simple_xlate;
+	node->data = &gpt->of_gc;
+	of_node_get(node);
+
+	/* Setup external pin in GPIO mode */
+	clrsetbits_be32(&gpt->regs->mode, MPC52xx_GPT_MODE_MS_MASK,
+			MPC52xx_GPT_MODE_MS_GPIO);
+
+	rc = gpiochip_add(&gpt->of_gc.gc);
+	if (rc)
+		dev_err(gpt->dev, "gpiochip_add() failed; rc=%i\n", rc);
+
+	dev_dbg(gpt->dev, "%s() complete.\n", __func__);
+}
+#else /* defined(CONFIG_GPIOLIB) */
+static void
+mpc52xx_gpt_gpio_setup(struct mpc52xx_gpt_priv *p, struct device_node *np) { }
+#endif /* defined(CONFIG_GPIOLIB) */
+
+/***********************************************************************
+ * SYSFS attributes
+ */
+#if defined(CONFIG_SYSFS)
+static ssize_t mpc52xx_gpt_show_regs(struct device *dev,
+				     struct device_attribute *attr, char *buf)
+{
+	struct mpc52xx_gpt_priv *gpt = dev_get_drvdata(dev);
+	int i, len = 0;
+	u32 __iomem *regs = (void __iomem *) gpt->regs;
+
+	for (i = 0; i < 4; i++)
+		len += sprintf(buf + len, "%.8x ", in_be32(regs + i));
+	len += sprintf(buf + len, "\n");
+
+	return len;
+}
+
+static struct device_attribute mpc52xx_gpt_attrib[] = {
+	__ATTR(regs, S_IRUGO | S_IWUSR, mpc52xx_gpt_show_regs, NULL),
+};
+
+static void mpc52xx_gpt_create_attribs(struct mpc52xx_gpt_priv *gpt)
+{
+	int i, err = 0;
+
+	for (i = 0; i < ARRAY_SIZE(mpc52xx_gpt_attrib); i++) {
+		err = device_create_file(gpt->dev, &mpc52xx_gpt_attrib[i]);
+		if (err)
+			dev_err(gpt->dev, "error creating attribute %i\n", i);
+	}
+
+}
+
+#else /* defined(CONFIG_SYSFS) */
+static void mpc52xx_gpt_create_attribs(struct mpc52xx_gpt_priv *) { return 0; }
+#endif /* defined(CONFIG_SYSFS) */
+
+/* ---------------------------------------------------------------------
+ * of_platform bus binding code
+ */
+static int __devinit mpc52xx_gpt_probe(struct of_device *ofdev,
+				       const struct of_device_id *match)
+{
+	struct mpc52xx_gpt_priv *gpt;
+
+	gpt = kzalloc(sizeof *gpt, GFP_KERNEL);
+	if (!gpt)
+		return -ENOMEM;
+
+	spin_lock_init(&gpt->lock);
+	gpt->dev = &ofdev->dev;
+	gpt->regs = of_iomap(ofdev->node, 0);
+	if (!gpt->regs) {
+		kfree(gpt);
+		return -ENOMEM;
+	}
+
+	dev_set_drvdata(&ofdev->dev, gpt);
+
+	mpc52xx_gpt_create_attribs(gpt);
+	mpc52xx_gpt_gpio_setup(gpt, ofdev->node);
+	mpc52xx_gpt_irq_setup(gpt, ofdev->node);
+
+	return 0;
+}
+
+static int mpc52xx_gpt_remove(struct of_device *ofdev)
+{
+	return -EBUSY;
+}
+
+static const struct of_device_id mpc52xx_gpt_match[] = {
+	{ .compatible = "fsl,mpc5200-gpt", },
+
+	/* Depreciated compatible values; don't use for new dts files */
+	{ .compatible = "fsl,mpc5200-gpt-gpio", },
+	{ .compatible = "mpc5200-gpt", },
+	{}
+};
+
+static struct of_platform_driver mpc52xx_gpt_driver = {
+	.name = "mpc52xx-gpt",
+	.match_table = mpc52xx_gpt_match,
+	.probe = mpc52xx_gpt_probe,
+	.remove = mpc52xx_gpt_remove,
+};
+
+static int __init mpc52xx_gpt_init(void)
+{
+	if (of_register_platform_driver(&mpc52xx_gpt_driver))
+		pr_err("error registering MPC52xx GPT driver\n");
+
+	return 0;
+}
+
+/* Make sure GPIOs and IRQs get set up before anyone tries to use them */
+subsys_initcall(mpc52xx_gpt_init);
-- 
cgit v1.2.3


From bfee95bb830ff0260f3e2e0b1aa6b7492573fe4d Mon Sep 17 00:00:00 2001
From: Grant Likely <grant.likely@secretlab.ca>
Date: Wed, 4 Feb 2009 13:39:17 -0700
Subject: powerpc/5200: Add support for the Media5200 board from Freescale

This patch adds board support for the Media5200 platform.  Changes are:
- add the media5200 device tree
- add the media5200 platform support code and cascaded interrupt controller
- add media5200 to the build targets.

Note: this patch also includes a minor tweak to the lite5200(b) target
images list to add the .dtb files to the image list.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---
 arch/powerpc/platforms/52xx/Kconfig     |   5 +
 arch/powerpc/platforms/52xx/Makefile    |   1 +
 arch/powerpc/platforms/52xx/media5200.c | 273 ++++++++++++++++++++++++++++++++
 3 files changed, 279 insertions(+)
 create mode 100644 arch/powerpc/platforms/52xx/media5200.c

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/52xx/Kconfig b/arch/powerpc/platforms/52xx/Kconfig
index 696a5ee4962..c01db1316b0 100644
--- a/arch/powerpc/platforms/52xx/Kconfig
+++ b/arch/powerpc/platforms/52xx/Kconfig
@@ -35,6 +35,11 @@ config PPC_LITE5200
 	depends on PPC_MPC52xx
 	select DEFAULT_UIMAGE
 
+config PPC_MEDIA5200
+	bool "Freescale Media5200 Eval Board"
+	depends on PPC_MPC52xx
+	select DEFAULT_UIMAGE
+
 config PPC_MPC5200_BUGFIX
 	bool "MPC5200 (L25R) bugfix support"
 	depends on PPC_MPC52xx
diff --git a/arch/powerpc/platforms/52xx/Makefile b/arch/powerpc/platforms/52xx/Makefile
index d6ade3d5f19..bfd4f52cf3d 100644
--- a/arch/powerpc/platforms/52xx/Makefile
+++ b/arch/powerpc/platforms/52xx/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_PCI)		+= mpc52xx_pci.o
 obj-$(CONFIG_PPC_MPC5200_SIMPLE) += mpc5200_simple.o
 obj-$(CONFIG_PPC_EFIKA)		+= efika.o
 obj-$(CONFIG_PPC_LITE5200)	+= lite5200.o
+obj-$(CONFIG_PPC_MEDIA5200)	+= media5200.o
 
 obj-$(CONFIG_PM)		+= mpc52xx_sleep.o mpc52xx_pm.o
 ifeq ($(CONFIG_PPC_LITE5200),y)
diff --git a/arch/powerpc/platforms/52xx/media5200.c b/arch/powerpc/platforms/52xx/media5200.c
new file mode 100644
index 00000000000..68e4f1696d1
--- /dev/null
+++ b/arch/powerpc/platforms/52xx/media5200.c
@@ -0,0 +1,273 @@
+/*
+ * Support for 'media5200-platform' compatible boards.
+ *
+ * Copyright (C) 2008 Secret Lab Technologies Ltd.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ *
+ * Description:
+ * This code implements support for the Freescape Media5200 platform
+ * (built around the MPC5200 SoC).
+ *
+ * Notable characteristic of the Media5200 is the presence of an FPGA
+ * that has all external IRQ lines routed through it.  This file implements
+ * a cascaded interrupt controller driver which attaches itself to the
+ * Virtual IRQ subsystem after the primary mpc5200 interrupt controller
+ * is initialized.
+ *
+ */
+
+#undef DEBUG
+
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <asm/time.h>
+#include <asm/prom.h>
+#include <asm/machdep.h>
+#include <asm/mpc52xx.h>
+
+static struct of_device_id mpc5200_gpio_ids[] __initdata = {
+	{ .compatible = "fsl,mpc5200-gpio", },
+	{ .compatible = "mpc5200-gpio", },
+	{}
+};
+
+/* FPGA register set */
+#define MEDIA5200_IRQ_ENABLE (0x40c)
+#define MEDIA5200_IRQ_STATUS (0x410)
+#define MEDIA5200_NUM_IRQS   (6)
+#define MEDIA5200_IRQ_SHIFT  (32 - MEDIA5200_NUM_IRQS)
+
+struct media5200_irq {
+	void __iomem *regs;
+	spinlock_t lock;
+	struct irq_host *irqhost;
+};
+struct media5200_irq media5200_irq;
+
+static void media5200_irq_unmask(unsigned int virq)
+{
+	unsigned long flags;
+	u32 val;
+
+	spin_lock_irqsave(&media5200_irq.lock, flags);
+	val = in_be32(media5200_irq.regs + MEDIA5200_IRQ_ENABLE);
+	val |= 1 << (MEDIA5200_IRQ_SHIFT + irq_map[virq].hwirq);
+	out_be32(media5200_irq.regs + MEDIA5200_IRQ_ENABLE, val);
+	spin_unlock_irqrestore(&media5200_irq.lock, flags);
+}
+
+static void media5200_irq_mask(unsigned int virq)
+{
+	unsigned long flags;
+	u32 val;
+
+	spin_lock_irqsave(&media5200_irq.lock, flags);
+	val = in_be32(media5200_irq.regs + MEDIA5200_IRQ_ENABLE);
+	val &= ~(1 << (MEDIA5200_IRQ_SHIFT + irq_map[virq].hwirq));
+	out_be32(media5200_irq.regs + MEDIA5200_IRQ_ENABLE, val);
+	spin_unlock_irqrestore(&media5200_irq.lock, flags);
+}
+
+static struct irq_chip media5200_irq_chip = {
+	.typename = "Media5200 FPGA",
+	.unmask = media5200_irq_unmask,
+	.mask = media5200_irq_mask,
+	.mask_ack = media5200_irq_mask,
+};
+
+void media5200_irq_cascade(unsigned int virq, struct irq_desc *desc)
+{
+	int sub_virq, val;
+	u32 status, enable;
+
+	/* Mask off the cascaded IRQ */
+	spin_lock(&desc->lock);
+	desc->chip->mask(virq);
+	spin_unlock(&desc->lock);
+
+	/* Ask the FPGA for IRQ status.  If 'val' is 0, then no irqs
+	 * are pending.  'ffs()' is 1 based */
+	status = in_be32(media5200_irq.regs + MEDIA5200_IRQ_ENABLE);
+	enable = in_be32(media5200_irq.regs + MEDIA5200_IRQ_STATUS);
+	val = ffs((status & enable) >> MEDIA5200_IRQ_SHIFT);
+	if (val) {
+		sub_virq = irq_linear_revmap(media5200_irq.irqhost, val - 1);
+		/* pr_debug("%s: virq=%i s=%.8x e=%.8x hwirq=%i subvirq=%i\n",
+		 *          __func__, virq, status, enable, val - 1, sub_virq);
+		 */
+		generic_handle_irq(sub_virq);
+	}
+
+	/* Processing done; can reenable the cascade now */
+	spin_lock(&desc->lock);
+	desc->chip->ack(virq);
+	if (!(desc->status & IRQ_DISABLED))
+		desc->chip->unmask(virq);
+	spin_unlock(&desc->lock);
+}
+
+static int media5200_irq_map(struct irq_host *h, unsigned int virq,
+			     irq_hw_number_t hw)
+{
+	struct irq_desc *desc = get_irq_desc(virq);
+
+	pr_debug("%s: h=%p, virq=%i, hwirq=%i\n", __func__, h, virq, (int)hw);
+	set_irq_chip_data(virq, &media5200_irq);
+	set_irq_chip_and_handler(virq, &media5200_irq_chip, handle_level_irq);
+	set_irq_type(virq, IRQ_TYPE_LEVEL_LOW);
+	desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
+	desc->status |= IRQ_TYPE_LEVEL_LOW | IRQ_LEVEL;
+
+	return 0;
+}
+
+static int media5200_irq_xlate(struct irq_host *h, struct device_node *ct,
+				 u32 *intspec, unsigned int intsize,
+				 irq_hw_number_t *out_hwirq,
+				 unsigned int *out_flags)
+{
+	if (intsize != 2)
+		return -1;
+
+	pr_debug("%s: bank=%i, number=%i\n", __func__, intspec[0], intspec[1]);
+	*out_hwirq = intspec[1];
+	*out_flags = IRQ_TYPE_NONE;
+	return 0;
+}
+
+static struct irq_host_ops media5200_irq_ops = {
+	.map = media5200_irq_map,
+	.xlate = media5200_irq_xlate,
+};
+
+/*
+ * Setup Media5200 IRQ mapping
+ */
+static void __init media5200_init_irq(void)
+{
+	struct device_node *fpga_np;
+	int cascade_virq;
+
+	/* First setup the regular MPC5200 interrupt controller */
+	mpc52xx_init_irq();
+
+	/* Now find the FPGA IRQ */
+	fpga_np = of_find_compatible_node(NULL, NULL, "fsl,media5200-fpga");
+	if (!fpga_np)
+		goto out;
+	pr_debug("%s: found fpga node: %s\n", __func__, fpga_np->full_name);
+
+	media5200_irq.regs = of_iomap(fpga_np, 0);
+	if (!media5200_irq.regs)
+		goto out;
+	pr_debug("%s: mapped to %p\n", __func__, media5200_irq.regs);
+
+	cascade_virq = irq_of_parse_and_map(fpga_np, 0);
+	if (!cascade_virq)
+		goto out;
+	pr_debug("%s: cascaded on virq=%i\n", __func__, cascade_virq);
+
+	/* Disable all FPGA IRQs */
+	out_be32(media5200_irq.regs + MEDIA5200_IRQ_ENABLE, 0);
+
+	spin_lock_init(&media5200_irq.lock);
+
+	media5200_irq.irqhost = irq_alloc_host(fpga_np, IRQ_HOST_MAP_LINEAR,
+					       MEDIA5200_NUM_IRQS,
+					       &media5200_irq_ops, -1);
+	if (!media5200_irq.irqhost)
+		goto out;
+	pr_debug("%s: allocated irqhost\n", __func__);
+
+	media5200_irq.irqhost->host_data = &media5200_irq;
+
+	set_irq_data(cascade_virq, &media5200_irq);
+	set_irq_chained_handler(cascade_virq, media5200_irq_cascade);
+
+	return;
+
+ out:
+	pr_err("Could not find Media5200 FPGA; PCI interrupts will not work\n");
+}
+
+/*
+ * Setup the architecture
+ */
+static void __init media5200_setup_arch(void)
+{
+
+	struct device_node *np;
+	struct mpc52xx_gpio __iomem *gpio;
+	u32 port_config;
+
+	if (ppc_md.progress)
+		ppc_md.progress("media5200_setup_arch()", 0);
+
+	/* Map important registers from the internal memory map */
+	mpc52xx_map_common_devices();
+
+	/* Some mpc5200 & mpc5200b related configuration */
+	mpc5200_setup_xlb_arbiter();
+
+	mpc52xx_setup_pci();
+
+	np = of_find_matching_node(NULL, mpc5200_gpio_ids);
+	gpio = of_iomap(np, 0);
+	of_node_put(np);
+	if (!gpio) {
+		printk(KERN_ERR "%s() failed. expect abnormal behavior\n",
+		       __func__);
+		return;
+	}
+
+	/* Set port config */
+	port_config = in_be32(&gpio->port_config);
+
+	port_config &= ~0x03000000;	/* ATA CS is on csb_4/5		*/
+	port_config |=  0x01000000;
+
+	out_be32(&gpio->port_config, port_config);
+
+	/* Unmap zone */
+	iounmap(gpio);
+
+}
+
+/* list of the supported boards */
+static char *board[] __initdata = {
+	"fsl,media5200",
+	NULL
+};
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init media5200_probe(void)
+{
+	unsigned long node = of_get_flat_dt_root();
+	int i = 0;
+
+	while (board[i]) {
+		if (of_flat_dt_is_compatible(node, board[i]))
+			break;
+		i++;
+	}
+
+	return (board[i] != NULL);
+}
+
+define_machine(media5200_platform) {
+	.name		= "media5200-platform",
+	.probe		= media5200_probe,
+	.setup_arch	= media5200_setup_arch,
+	.init		= mpc52xx_declare_of_platform_devices,
+	.init_IRQ	= media5200_init_irq,
+	.get_irq	= mpc52xx_get_irq,
+	.restart	= mpc52xx_restart,
+	.calibrate_decr	= generic_calibrate_decr,
+};
-- 
cgit v1.2.3


From bdad05489fe5f7487c7a22ef311f005cb62ebbb6 Mon Sep 17 00:00:00 2001
From: Grzegorz Bernacki <gjb@semihalf.com>
Date: Wed, 4 Feb 2009 13:39:17 -0700
Subject: powerpc/5200: Add support for the digsy MTC board.

Board support for the InterControl Digsy-MTC device based on the MPC5200B SoC.

Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---
 arch/powerpc/platforms/52xx/Kconfig          | 7 ++++++-
 arch/powerpc/platforms/52xx/mpc5200_simple.c | 1 +
 2 files changed, 7 insertions(+), 1 deletion(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/52xx/Kconfig b/arch/powerpc/platforms/52xx/Kconfig
index c01db1316b0..0465e5b36e6 100644
--- a/arch/powerpc/platforms/52xx/Kconfig
+++ b/arch/powerpc/platforms/52xx/Kconfig
@@ -21,7 +21,12 @@ config PPC_MPC5200_SIMPLE
 	    and if there is a PCI bus node defined in the device tree.
 
 	  Boards that are compatible with this generic platform support
-	  are: 'tqc,tqm5200', 'promess,motionpro', 'schindler,cm5200'.
+	  are:
+	     intercontrol,digsy-mtc
+	     phytec,pcm030
+	     promess,motionpro
+	     schindler,cm5200
+	     tqc,tqm5200
 
 config PPC_EFIKA
 	bool "bPlan Efika 5k2. MPC5200B based computer"
diff --git a/arch/powerpc/platforms/52xx/mpc5200_simple.c b/arch/powerpc/platforms/52xx/mpc5200_simple.c
index a3bda0b9f1f..d5e1471e51f 100644
--- a/arch/powerpc/platforms/52xx/mpc5200_simple.c
+++ b/arch/powerpc/platforms/52xx/mpc5200_simple.c
@@ -50,6 +50,7 @@ static void __init mpc5200_simple_setup_arch(void)
 
 /* list of the supported boards */
 static char *board[] __initdata = {
+	"intercontrol,digsy-mtc",
 	"promess,motionpro",
 	"phytec,pcm030",
 	"schindler,cm5200",
-- 
cgit v1.2.3


From 7ce14a315db866605e6ac0b17fb33d10d7e49ab4 Mon Sep 17 00:00:00 2001
From: Milton Miller <miltonm@bga.com>
Date: Thu, 8 Jan 2009 02:19:49 +0000
Subject: powerpc/pseries: Remove write only variable in PCI DLPAR

Since we never hotplug add an isa bus, we never need to set primary.
Delete this write-only variable.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/pseries/pci_dlpar.c | 2 --
 1 file changed, 2 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c
index 5e1ed3d60ee..ad152a0e394 100644
--- a/arch/powerpc/platforms/pseries/pci_dlpar.c
+++ b/arch/powerpc/platforms/pseries/pci_dlpar.c
@@ -137,11 +137,9 @@ EXPORT_SYMBOL_GPL(pcibios_add_pci_devices);
 struct pci_controller * __devinit init_phb_dynamic(struct device_node *dn)
 {
 	struct pci_controller *phb;
-	int primary;
 
 	pr_debug("PCI: Initializing new hotplug PHB %s\n", dn->full_name);
 
-	primary = list_empty(&hose_list);
 	phb = pcibios_alloc_controller(dn);
 	if (!phb)
 		return NULL;
-- 
cgit v1.2.3


From e27ed698b88b3387d326e84c0bbe9f83e19c747b Mon Sep 17 00:00:00 2001
From: Michael Ellerman <michael@ellerman.id.au>
Date: Thu, 22 Jan 2009 20:54:31 +0000
Subject: powerpc/pseries: Fix MSI-X interrupt querying

We need to increment i in the loop that queries what interrupts firmware
gave us, otherwise we'll incorrectly use the first value over and over.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/pseries/msi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c
index f15222bbe13..4af7aa3e2e0 100644
--- a/arch/powerpc/platforms/pseries/msi.c
+++ b/arch/powerpc/platforms/pseries/msi.c
@@ -199,7 +199,7 @@ static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
 
 	i = 0;
 	list_for_each_entry(entry, &pdev->msi_list, list) {
-		hwirq = rtas_query_irq_number(pdn, i);
+		hwirq = rtas_query_irq_number(pdn, i++);
 		if (hwirq < 0) {
 			pr_debug("rtas_msi: error (%d) getting hwirq\n", rc);
 			return hwirq;
-- 
cgit v1.2.3


From 3a51c0cbea947dc9194e18f11661eaa4dbfc5c13 Mon Sep 17 00:00:00 2001
From: Michael Ellerman <michael@ellerman.id.au>
Date: Thu, 22 Jan 2009 20:54:31 +0000
Subject: powerpc/pseries: Add support for ibm,req#msi-x

Firmware encodes the number of MSI-X requested by a device in a

different property than for MSI. Pull the property name out as a
parameter and share the logic for both cases.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/pseries/msi.c | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c
index 4af7aa3e2e0..acf1070d65c 100644
--- a/arch/powerpc/platforms/pseries/msi.c
+++ b/arch/powerpc/platforms/pseries/msi.c
@@ -132,7 +132,7 @@ static void rtas_teardown_msi_irqs(struct pci_dev *pdev)
 	rtas_disable_msi(pdev);
 }
 
-static int check_req_msi(struct pci_dev *pdev, int nvec)
+static int check_req(struct pci_dev *pdev, int nvec, char *prop_name)
 {
 	struct device_node *dn;
 	struct pci_dn *pdn;
@@ -144,24 +144,34 @@ static int check_req_msi(struct pci_dev *pdev, int nvec)
 
 	dn = pdn->node;
 
-	req_msi = of_get_property(dn, "ibm,req#msi", NULL);
+	req_msi = of_get_property(dn, prop_name, NULL);
 	if (!req_msi) {
-		pr_debug("rtas_msi: No ibm,req#msi on %s\n", dn->full_name);
+		pr_debug("rtas_msi: No %s on %s\n", prop_name, dn->full_name);
 		return -ENOENT;
 	}
 
 	if (*req_msi < nvec) {
-		pr_debug("rtas_msi: ibm,req#msi requests < %d MSIs\n", nvec);
+		pr_debug("rtas_msi: %s requests < %d MSIs\n", prop_name, nvec);
 		return -ENOSPC;
 	}
 
 	return 0;
 }
 
+static int check_req_msi(struct pci_dev *pdev, int nvec)
+{
+	return check_req(pdev, nvec, "ibm,req#msi");
+}
+
+static int check_req_msix(struct pci_dev *pdev, int nvec)
+{
+	return check_req(pdev, nvec, "ibm,req#msi-x");
+}
+
 static int rtas_msi_check_device(struct pci_dev *pdev, int nvec, int type)
 {
 	if (type == PCI_CAP_ID_MSIX)
-		pr_debug("rtas_msi: MSI-X untested, trying anyway.\n");
+		return check_req_msix(pdev, nvec);
 
 	return check_req_msi(pdev, nvec);
 }
-- 
cgit v1.2.3


From 649781f82782d142443d895b98edbd8be4e75c56 Mon Sep 17 00:00:00 2001
From: Michael Ellerman <michael@ellerman.id.au>
Date: Thu, 22 Jan 2009 20:54:32 +0000
Subject: powerpc/pseries: Check for MSI-X also in rtas_msi_pci_irq_fixup()

We also need to check that the device isn't using MSI-X in the irq fixup
routine, otherwise we might leave MSI-Xs configured at boot.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/pseries/msi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c
index acf1070d65c..e6c80ac0769 100644
--- a/arch/powerpc/platforms/pseries/msi.c
+++ b/arch/powerpc/platforms/pseries/msi.c
@@ -244,8 +244,8 @@ static void rtas_msi_pci_irq_fixup(struct pci_dev *pdev)
 	}
 
 	/* No MSI -> MSIs can't have been assigned by fw, leave LSI */
-	if (check_req_msi(pdev, 1)) {
-		dev_dbg(&pdev->dev, "rtas_msi: no req#msi, nothing to do.\n");
+	if (check_req_msi(pdev, 1) && check_req_msix(pdev, 1)) {
+		dev_dbg(&pdev->dev, "rtas_msi: no req#msi/x, nothing to do.\n");
 		return;
 	}
 
-- 
cgit v1.2.3


From 6071ed0487c6ea8dcfadd9844b9b90944cd9de1e Mon Sep 17 00:00:00 2001
From: Michael Ellerman <michael@ellerman.id.au>
Date: Thu, 22 Jan 2009 20:54:33 +0000
Subject: powerpc/pseries: Return the number of MSIs we could allocate

If we can't allocate the requested number of MSIs, we can still tell the
generic code how many we were able to allocate. That can then be passed
onto the driver, allowing it to request that many in future, and
probably succeeed.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/pseries/msi.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c
index e6c80ac0769..073b518338a 100644
--- a/arch/powerpc/platforms/pseries/msi.c
+++ b/arch/powerpc/platforms/pseries/msi.c
@@ -71,11 +71,13 @@ static int rtas_change_msi(struct pci_dn *pdn, u32 func, u32 num_irqs)
 	} while (rtas_busy_delay(rc));
 
 	/*
-	 * If the RTAS call succeeded, check the number of irqs is actually
-	 * what we asked for. If not, return an error.
+	 * If the RTAS call succeeded, return the number of irqs allocated.
+	 * If not, make sure we return a negative error code.
 	 */
-	if (rc == 0 && rtas_ret[0] != num_irqs)
-		rc = -ENOSPC;
+	if (rc == 0)
+		rc = rtas_ret[0];
+	else if (rc > 0)
+		rc = -rc;
 
 	pr_debug("rtas_msi: ibm,change_msi(func=%d,num=%d), got %d rc = %d\n",
 		 func, num_irqs, rtas_ret[0], rc);
@@ -91,7 +93,7 @@ static void rtas_disable_msi(struct pci_dev *pdev)
 	if (!pdn)
 		return;
 
-	if (rtas_change_msi(pdn, RTAS_CHANGE_FN, 0))
+	if (rtas_change_msi(pdn, RTAS_CHANGE_FN, 0) != 0)
 		pr_debug("rtas_msi: Setting MSIs to 0 failed!\n");
 }
 
@@ -195,14 +197,14 @@ static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
 	if (type == PCI_CAP_ID_MSI) {
 		rc = rtas_change_msi(pdn, RTAS_CHANGE_MSI_FN, nvec);
 
-		if (rc) {
+		if (rc < 0) {
 			pr_debug("rtas_msi: trying the old firmware call.\n");
 			rc = rtas_change_msi(pdn, RTAS_CHANGE_FN, nvec);
 		}
 	} else
 		rc = rtas_change_msi(pdn, RTAS_CHANGE_MSIX_FN, nvec);
 
-	if (rc) {
+	if (rc != nvec) {
 		pr_debug("rtas_msi: rtas_change_msi() failed\n");
 		return rc;
 	}
-- 
cgit v1.2.3


From 10156ceac26b8adfd5d739a3931c8aa9d0d69d53 Mon Sep 17 00:00:00 2001
From: Gabriel Paubert <paubert@iram.es>
Date: Tue, 10 Feb 2009 06:13:50 +0000
Subject: powerpc: Disable mv643xx Ethernet port 0 on Pegasos

After the last changes, the mv643xx_eth driver now detects
a spurious interface on port 0. Since only port 1 is actually
connected to a PHY, remove its description.

Signed-off-by: Gabriel Paubert <paubert@iram.es>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/chrp/pegasos_eth.c | 72 ++++++++-----------------------
 1 file changed, 17 insertions(+), 55 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/chrp/pegasos_eth.c b/arch/powerpc/platforms/chrp/pegasos_eth.c
index 130ff72d99d..039fc8e8219 100644
--- a/arch/powerpc/platforms/chrp/pegasos_eth.c
+++ b/arch/powerpc/platforms/chrp/pegasos_eth.c
@@ -21,8 +21,8 @@
 #define PEGASOS2_SRAM_BASE 			(0xf2000000)
 #define PEGASOS2_SRAM_SIZE			(256*1024)
 
-#define PEGASOS2_SRAM_BASE_ETH0			(PEGASOS2_SRAM_BASE)
-#define PEGASOS2_SRAM_BASE_ETH1			(PEGASOS2_SRAM_BASE_ETH0 + (PEGASOS2_SRAM_SIZE / 2) )
+#define PEGASOS2_SRAM_BASE_ETH_PORT0			(PEGASOS2_SRAM_BASE)
+#define PEGASOS2_SRAM_BASE_ETH_PORT1			(PEGASOS2_SRAM_BASE_ETH_PORT0 + (PEGASOS2_SRAM_SIZE / 2) )
 
 
 #define PEGASOS2_SRAM_RXRING_SIZE		(PEGASOS2_SRAM_SIZE/4)
@@ -47,75 +47,42 @@ static struct platform_device mv643xx_eth_shared_device = {
 	.resource	= mv643xx_eth_shared_resources,
 };
 
-static struct resource mv643xx_eth0_resources[] = {
+static struct resource mv643xx_eth_port1_resources[] = {
 	[0] = {
-		.name	= "eth0 irq",
+		.name	= "eth port1 irq",
 		.start	= 9,
 		.end	= 9,
 		.flags	= IORESOURCE_IRQ,
 	},
 };
 
-
-static struct mv643xx_eth_platform_data eth0_pd = {
-	.shared		= &mv643xx_eth_shared_device,
-	.port_number	= 0,
-
-	.tx_sram_addr = PEGASOS2_SRAM_BASE_ETH0,
-	.tx_sram_size = PEGASOS2_SRAM_TXRING_SIZE,
-	.tx_queue_size = PEGASOS2_SRAM_TXRING_SIZE/16,
-
-	.rx_sram_addr = PEGASOS2_SRAM_BASE_ETH0 + PEGASOS2_SRAM_TXRING_SIZE,
-	.rx_sram_size = PEGASOS2_SRAM_RXRING_SIZE,
-	.rx_queue_size = PEGASOS2_SRAM_RXRING_SIZE/16,
-};
-
-static struct platform_device eth0_device = {
-	.name		= MV643XX_ETH_NAME,
-	.id		= 0,
-	.num_resources	= ARRAY_SIZE(mv643xx_eth0_resources),
-	.resource	= mv643xx_eth0_resources,
-	.dev = {
-		.platform_data = &eth0_pd,
-	},
-};
-
-static struct resource mv643xx_eth1_resources[] = {
-	[0] = {
-		.name	= "eth1 irq",
-		.start	= 9,
-		.end	= 9,
-		.flags	= IORESOURCE_IRQ,
-	},
-};
-
-static struct mv643xx_eth_platform_data eth1_pd = {
+static struct mv643xx_eth_platform_data eth_port1_pd = {
 	.shared		= &mv643xx_eth_shared_device,
 	.port_number	= 1,
+	.phy_addr	= MV643XX_ETH_PHY_ADDR(7),
 
-	.tx_sram_addr = PEGASOS2_SRAM_BASE_ETH1,
+	.tx_sram_addr = PEGASOS2_SRAM_BASE_ETH_PORT1,
 	.tx_sram_size = PEGASOS2_SRAM_TXRING_SIZE,
 	.tx_queue_size = PEGASOS2_SRAM_TXRING_SIZE/16,
 
-	.rx_sram_addr = PEGASOS2_SRAM_BASE_ETH1 + PEGASOS2_SRAM_TXRING_SIZE,
+	.rx_sram_addr = PEGASOS2_SRAM_BASE_ETH_PORT1 + PEGASOS2_SRAM_TXRING_SIZE,
 	.rx_sram_size = PEGASOS2_SRAM_RXRING_SIZE,
 	.rx_queue_size = PEGASOS2_SRAM_RXRING_SIZE/16,
 };
 
-static struct platform_device eth1_device = {
+static struct platform_device eth_port1_device = {
 	.name		= MV643XX_ETH_NAME,
 	.id		= 1,
-	.num_resources	= ARRAY_SIZE(mv643xx_eth1_resources),
-	.resource	= mv643xx_eth1_resources,
+	.num_resources	= ARRAY_SIZE(mv643xx_eth_port1_resources),
+	.resource	= mv643xx_eth_port1_resources,
 	.dev = {
-		.platform_data = &eth1_pd,
+		.platform_data = &eth_port1_pd,
 	},
 };
 
 static struct platform_device *mv643xx_eth_pd_devs[] __initdata = {
 	&mv643xx_eth_shared_device,
-	&eth0_device,
-	&eth1_device,
+	&eth_port1_device,
 };
 
 /***********/
@@ -191,15 +158,10 @@ static int __init mv643xx_eth_add_pds(void)
 
 		if ( Enable_SRAM() < 0)
 		{
-			eth0_pd.tx_sram_addr = 0;
-			eth0_pd.tx_sram_size = 0;
-			eth0_pd.rx_sram_addr = 0;
-			eth0_pd.rx_sram_size = 0;
-
-			eth1_pd.tx_sram_addr = 0;
-			eth1_pd.tx_sram_size = 0;
-			eth1_pd.rx_sram_addr = 0;
-			eth1_pd.rx_sram_size = 0;
+			eth_port1_pd.tx_sram_addr = 0;
+			eth_port1_pd.tx_sram_size = 0;
+			eth_port1_pd.rx_sram_addr = 0;
+			eth_port1_pd.rx_sram_size = 0;
 
 #ifdef BE_VERBOSE
 			printk("Pegasos II/Marvell MV64361: Can't enable the "
-- 
cgit v1.2.3


From 8535ef05a6904429ce72671c3035dbf05e6d5edf Mon Sep 17 00:00:00 2001
From: Mike Mason <mmlnx@us.ibm.com>
Date: Tue, 10 Feb 2009 11:12:21 +0000
Subject: powerpc/eeh: Only disable/enable LSI interrupts in EEH

The EEH code disables and enables interrupts during the
device recovery process.  This is unnecessary for MSI
and MSI-X interrupts because they are effectively disabled
by the DMA Stopped state when an EEH error occurs.  The
current code is also incorrect for MSI-X interrupts.  It
doesn't take into account that MSI-X interrupts are tracked
in a different way than LSI/MSI interrupts.  This patch
ensures only LSI interrupts are disabled/enabled.

Signed-off-by: Mike Mason <mmlnx@us.ibm.com>
Acked-by: Linas Vepstas <linasvepstas@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/pseries/eeh_driver.c | 68 +++++++++++++++++++----------
 1 file changed, 45 insertions(+), 23 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/pseries/eeh_driver.c b/arch/powerpc/platforms/pseries/eeh_driver.c
index 0ad56ff7b4a..380420f8c40 100644
--- a/arch/powerpc/platforms/pseries/eeh_driver.c
+++ b/arch/powerpc/platforms/pseries/eeh_driver.c
@@ -79,6 +79,40 @@ static int irq_in_use(unsigned int irq)
 	return rc;
 }
 
+/**
+ * eeh_disable_irq - disable interrupt for the recovering device
+ */
+static void eeh_disable_irq(struct pci_dev *dev)
+{
+	struct device_node *dn = pci_device_to_OF_node(dev);
+
+	/* Don't disable MSI and MSI-X interrupts. They are
+	 * effectively disabled by the DMA Stopped state
+	 * when an EEH error occurs.
+	*/
+	if (dev->msi_enabled || dev->msix_enabled)
+		return;
+
+	if (!irq_in_use(dev->irq))
+		return;
+
+	PCI_DN(dn)->eeh_mode |= EEH_MODE_IRQ_DISABLED;
+	disable_irq_nosync(dev->irq);
+}
+
+/**
+ * eeh_enable_irq - enable interrupt for the recovering device
+ */
+static void eeh_enable_irq(struct pci_dev *dev)
+{
+	struct device_node *dn = pci_device_to_OF_node(dev);
+
+	if ((PCI_DN(dn)->eeh_mode) & EEH_MODE_IRQ_DISABLED) {
+		PCI_DN(dn)->eeh_mode &= ~EEH_MODE_IRQ_DISABLED;
+		enable_irq(dev->irq);
+	}
+}
+
 /* ------------------------------------------------------- */
 /**
  * eeh_report_error - report pci error to each device driver
@@ -98,11 +132,8 @@ static void eeh_report_error(struct pci_dev *dev, void *userdata)
 	if (!driver)
 		return;
 
-	if (irq_in_use (dev->irq)) {
-		struct device_node *dn = pci_device_to_OF_node(dev);
-		PCI_DN(dn)->eeh_mode |= EEH_MODE_IRQ_DISABLED;
-		disable_irq_nosync(dev->irq);
-	}
+	eeh_disable_irq(dev);
+
 	if (!driver->err_handler ||
 	    !driver->err_handler->error_detected)
 		return;
@@ -147,15 +178,12 @@ static void eeh_report_reset(struct pci_dev *dev, void *userdata)
 {
 	enum pci_ers_result rc, *res = userdata;
 	struct pci_driver *driver = dev->driver;
-	struct device_node *dn = pci_device_to_OF_node(dev);
 
 	if (!driver)
 		return;
 
-	if ((PCI_DN(dn)->eeh_mode) & EEH_MODE_IRQ_DISABLED) {
-		PCI_DN(dn)->eeh_mode &= ~EEH_MODE_IRQ_DISABLED;
-		enable_irq(dev->irq);
-	}
+	eeh_enable_irq(dev);
+
 	if (!driver->err_handler ||
 	    !driver->err_handler->slot_reset)
 		return;
@@ -174,17 +202,14 @@ static void eeh_report_reset(struct pci_dev *dev, void *userdata)
 static void eeh_report_resume(struct pci_dev *dev, void *userdata)
 {
 	struct pci_driver *driver = dev->driver;
-	struct device_node *dn = pci_device_to_OF_node(dev);
 
 	dev->error_state = pci_channel_io_normal;
 
 	if (!driver)
 		return;
 
-	if ((PCI_DN(dn)->eeh_mode) & EEH_MODE_IRQ_DISABLED) {
-		PCI_DN(dn)->eeh_mode &= ~EEH_MODE_IRQ_DISABLED;
-		enable_irq(dev->irq);
-	}
+	eeh_enable_irq(dev);
+
 	if (!driver->err_handler ||
 	    !driver->err_handler->resume)
 		return;
@@ -208,15 +233,12 @@ static void eeh_report_failure(struct pci_dev *dev, void *userdata)
 	if (!driver)
 		return;
 
-	if (irq_in_use (dev->irq)) {
-		struct device_node *dn = pci_device_to_OF_node(dev);
-		PCI_DN(dn)->eeh_mode |= EEH_MODE_IRQ_DISABLED;
-		disable_irq_nosync(dev->irq);
-	}
-	if (!driver->err_handler)
-		return;
-	if (!driver->err_handler->error_detected)
+	eeh_disable_irq(dev);
+
+	if (!driver->err_handler ||
+	    !driver->err_handler->error_detected)
 		return;
+
 	driver->err_handler->error_detected(dev, pci_channel_io_perm_failure);
 }
 
-- 
cgit v1.2.3


From 54b318aa5211ab7bba617a27d9cbd7fd759dcfd0 Mon Sep 17 00:00:00 2001
From: Gerhard Pircher <gerhard_pircher@gmx.net>
Date: Tue, 10 Feb 2009 12:20:49 +0000
Subject: powerpc/amigaone: Add platform support for AmigaOne

This commit adds the setup code for booting Linux on AmigaOne G3SE (G3
only), AmigaOne XE and uA1 (G3/G4) desktop computers. These boards were
sold by Eyetech and are based on MAI Logic's Teron boards and its
Articia S northbridge.
The AmigaOne uses U-boot as firmware, which doesn't support a flattened
device tree yet. The northbridge has some design flaws, which makes it
necessary to use non cacheable memory for DMA operations
(CONFIG_NOT_COHERENT_CACHE) and to avoid setting the coherence (M) flag
for memory pages.

Signed-off-by: Gerhard Pircher <gerhard_pircher@gmx.net>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/Kconfig           |   1 +
 arch/powerpc/platforms/Makefile          |   1 +
 arch/powerpc/platforms/amigaone/Kconfig  |  18 ++++
 arch/powerpc/platforms/amigaone/Makefile |   1 +
 arch/powerpc/platforms/amigaone/setup.c  | 170 +++++++++++++++++++++++++++++++
 5 files changed, 191 insertions(+)
 create mode 100644 arch/powerpc/platforms/amigaone/Kconfig
 create mode 100644 arch/powerpc/platforms/amigaone/Makefile
 create mode 100644 arch/powerpc/platforms/amigaone/setup.c

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index 200b9cb900e..b25404ca221 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -28,6 +28,7 @@ source "arch/powerpc/platforms/86xx/Kconfig"
 source "arch/powerpc/platforms/embedded6xx/Kconfig"
 source "arch/powerpc/platforms/44x/Kconfig"
 source "arch/powerpc/platforms/40x/Kconfig"
+source "arch/powerpc/platforms/amigaone/Kconfig"
 
 config PPC_NATIVE
 	bool
diff --git a/arch/powerpc/platforms/Makefile b/arch/powerpc/platforms/Makefile
index 8079e0b4fd6..f7419198e63 100644
--- a/arch/powerpc/platforms/Makefile
+++ b/arch/powerpc/platforms/Makefile
@@ -19,3 +19,4 @@ obj-$(CONFIG_PPC_PASEMI)	+= pasemi/
 obj-$(CONFIG_PPC_CELL)		+= cell/
 obj-$(CONFIG_PPC_PS3)		+= ps3/
 obj-$(CONFIG_EMBEDDED6xx)	+= embedded6xx/
+obj-$(CONFIG_AMIGAONE)		+= amigaone/
diff --git a/arch/powerpc/platforms/amigaone/Kconfig b/arch/powerpc/platforms/amigaone/Kconfig
new file mode 100644
index 00000000000..9276a96cede
--- /dev/null
+++ b/arch/powerpc/platforms/amigaone/Kconfig
@@ -0,0 +1,18 @@
+config AMIGAONE
+	bool "Eyetech AmigaOne/MAI Teron"
+	depends on PPC32 && BROKEN_ON_SMP && PPC_MULTIPLATFORM
+	select PPC_I8259
+	select PPC_INDIRECT_PCI
+	select PPC_UDBG_16550
+	select PCI
+	select NOT_COHERENT_CACHE
+	select CHECK_CACHE_COHERENCY
+	select DEFAULT_UIMAGE
+	select PCSPKR_PLATFORM
+	help
+	Select AmigaOne for the following machines:
+	- AmigaOne SE/Teron CX (G3 only)
+	- AmigaOne XE/Teron PX
+	- uA1/Teron mini
+	  More information is available at:
+	  <http://amigaone-linux.sourceforge.net/>.
diff --git a/arch/powerpc/platforms/amigaone/Makefile b/arch/powerpc/platforms/amigaone/Makefile
new file mode 100644
index 00000000000..e6885b3b2ee
--- /dev/null
+++ b/arch/powerpc/platforms/amigaone/Makefile
@@ -0,0 +1 @@
+obj-y	+= setup.o
diff --git a/arch/powerpc/platforms/amigaone/setup.c b/arch/powerpc/platforms/amigaone/setup.c
new file mode 100644
index 00000000000..443035366c1
--- /dev/null
+++ b/arch/powerpc/platforms/amigaone/setup.c
@@ -0,0 +1,170 @@
+/*
+ * AmigaOne platform setup
+ *
+ * Copyright 2008 Gerhard Pircher (gerhard_pircher@gmx.net)
+ *
+ *   Based on original amigaone_setup.c source code
+ * Copyright 2003 by Hans-Joerg Frieden and Thomas Frieden
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/seq_file.h>
+#include <linux/utsrelease.h>
+
+#include <asm/machdep.h>
+#include <asm/cputable.h>
+#include <asm/prom.h>
+#include <asm/pci-bridge.h>
+#include <asm/i8259.h>
+#include <asm/time.h>
+#include <asm/udbg.h>
+
+extern void __flush_disable_L1(void);
+
+void amigaone_show_cpuinfo(struct seq_file *m)
+{
+	seq_printf(m, "vendor\t\t: Eyetech Ltd.\n");
+}
+
+static int __init amigaone_add_bridge(struct device_node *dev)
+{
+	const u32 *cfg_addr, *cfg_data;
+	int len;
+	const int *bus_range;
+	struct pci_controller *hose;
+
+	printk(KERN_INFO "Adding PCI host bridge %s\n", dev->full_name);
+
+	cfg_addr = of_get_address(dev, 0, NULL, NULL);
+	cfg_data = of_get_address(dev, 1, NULL, NULL);
+	if ((cfg_addr == NULL) || (cfg_data == NULL))
+		return -ENODEV;
+
+	bus_range = of_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(dev);
+	if (hose == NULL)
+		return -ENOMEM;
+
+	hose->first_busno = bus_range ? bus_range[0] : 0;
+	hose->last_busno = bus_range ? bus_range[1] : 0xff;
+
+	setup_indirect_pci(hose, cfg_addr[0], cfg_data[0], 0);
+
+	/* 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;
+}
+
+void __init amigaone_setup_arch(void)
+{
+	struct device_node *np;
+	int phb = -ENODEV;
+
+	/* Lookup PCI host bridges. */
+	for_each_compatible_node(np, "pci", "mai-logic,articia-s")
+		phb = amigaone_add_bridge(np);
+
+	BUG_ON(phb != 0);
+
+	if (ppc_md.progress)
+		ppc_md.progress("Linux/PPC "UTS_RELEASE"\n", 0);
+}
+
+void __init amigaone_init_IRQ(void)
+{
+	struct device_node *pic, *np = NULL;
+	const unsigned long *prop = NULL;
+	unsigned long int_ack = 0;
+
+	/* Search for ISA interrupt controller. */
+	pic = of_find_compatible_node(NULL, "interrupt-controller",
+	                              "pnpPNP,000");
+	BUG_ON(pic == NULL);
+
+	/* Look for interrupt acknowledge address in the PCI root node. */
+	np = of_find_compatible_node(NULL, "pci", "mai-logic,articia-s");
+	if (np) {
+		prop = of_get_property(np, "8259-interrupt-acknowledge", NULL);
+		if (prop)
+			int_ack = prop[0];
+		of_node_put(np);
+	}
+
+	if (int_ack == 0)
+		printk(KERN_WARNING "Cannot find PCI interrupt acknowledge"
+		       " address, polling\n");
+
+	i8259_init(pic, int_ack);
+	ppc_md.get_irq = i8259_irq;
+	irq_set_default_host(i8259_get_host());
+}
+
+void __init amigaone_init(void)
+{
+	request_region(0x00, 0x20, "dma1");
+	request_region(0x40, 0x20, "timer");
+	request_region(0x80, 0x10, "dma page reg");
+	request_region(0xc0, 0x20, "dma2");
+}
+
+void amigaone_restart(char *cmd)
+{
+	local_irq_disable();
+
+	/* Flush and disable caches. */
+	__flush_disable_L1();
+
+        /* Set SRR0 to the reset vector and turn on MSR_IP. */
+	mtspr(SPRN_SRR0, 0xfff00100);
+	mtspr(SPRN_SRR1, MSR_IP);
+
+	/* Do an rfi to jump back to firmware. */
+	__asm__ __volatile__("rfi" : : : "memory");
+
+	/* Not reached. */
+	while (1);
+}
+
+static int __init amigaone_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	if (of_flat_dt_is_compatible(root, "eyetech,amigaone")) {
+		/*
+		 * Coherent memory access cause complete system lockup! Thus
+		 * disable this CPU feature, even if the CPU needs it.
+		 */
+		cur_cpu_spec->cpu_features &= ~CPU_FTR_NEED_COHERENT;
+
+		ISA_DMA_THRESHOLD = 0x00ffffff;
+		DMA_MODE_READ = 0x44;
+		DMA_MODE_WRITE = 0x48;
+
+		return 1;
+	}
+
+	return 0;
+}
+
+define_machine(amigaone) {
+	.name			= "AmigaOne",
+	.probe			= amigaone_probe,
+	.setup_arch		= amigaone_setup_arch,
+	.init			= amigaone_init,
+	.show_cpuinfo		= amigaone_show_cpuinfo,
+	.init_IRQ		= amigaone_init_IRQ,
+	.restart		= amigaone_restart,
+	.calibrate_decr		= generic_calibrate_decr,
+	.progress		= udbg_progress,
+};
-- 
cgit v1.2.3


From 70fe3af8403f85196bb74f22ce4813db7dfedc1a Mon Sep 17 00:00:00 2001
From: Kumar Gala <galak@kernel.crashing.org>
Date: Thu, 12 Feb 2009 16:12:40 -0600
Subject: powerpc/book-3e: Introduce concept of Book-3e MMU

The Power ISA 2.06 spec introduces a standard MMU programming model that
is based on the Freescale Book-E MMU programing model.  The Freescale
version is pretty backwards compatiable with the ISA 2.06 definition so
we are starting to refactor some of the Freescale code so it can be
easily shared.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 arch/powerpc/platforms/Kconfig.cputype | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index e868b5c5072..9428c0e11b2 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -210,6 +210,10 @@ config PPC_MMU_NOHASH
 	def_bool y
 	depends on !PPC_STD_MMU
 
+config PPC_BOOK3E_MMU
+	def_bool y
+	depends on FSL_BOOKE
+
 config PPC_MM_SLICES
 	bool
 	default y if HUGETLB_PAGE || (PPC_STD_MMU_64 && PPC_64K_PAGES)
-- 
cgit v1.2.3


From 6c7120902305b3a21460cd2f0f917a39307df566 Mon Sep 17 00:00:00 2001
From: Madhulika Madishetty <mmadishetty@amcc.com>
Date: Thu, 5 Feb 2009 13:31:36 +0000
Subject: AMCC PPC 460SX redwood SoC platform initial framework

This patch contains initial framework for the AMCC Redwood board.

Signed-off-by: Madhulika Madishetty <mmadishetty@amcc.com>
Signed-off-by: Tirumala Marri <tmarri@amcc.com>
Signed-off-by: Feng Kan <fkan@amcc.com>
Signed-off-by: Vidhyananth Venkatasamy <vvenkatasamy@amcc.com>
Signed-off-by: Preetesh Parekh <pparekh@amcc.com>
Acked-by: Loc Ho <lho@amcc.com>
Acked-by: Feng Kan <fkan@amcc.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
---
 arch/powerpc/platforms/44x/Kconfig         | 19 +++++++++++++++++++
 arch/powerpc/platforms/44x/ppc44x_simple.c |  1 +
 2 files changed, 20 insertions(+)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig
index 3496bc05058..bf5c7ff2e6e 100644
--- a/arch/powerpc/platforms/44x/Kconfig
+++ b/arch/powerpc/platforms/44x/Kconfig
@@ -118,6 +118,17 @@ config GLACIER
 	help
 	  This option enables support for the AMCC PPC460GT evaluation board.
 
+config REDWOOD
+	bool "Redwood"
+	depends on 44x
+	default n
+	select PPC44x_SIMPLE
+	select 460SX
+	select PCI
+	select PPC4xx_PCI_EXPRESS
+	help
+	  This option enables support for the AMCC PPC460SX Redwood board.
+
 config YOSEMITE
 	bool "Yosemite"
 	depends on 44x
@@ -220,6 +231,14 @@ config 460EX
 	select IBM_NEW_EMAC_EMAC4
 	select IBM_NEW_EMAC_TAH
 
+config 460SX
+	bool
+	select PPC_FPU
+	select IBM_NEW_EMAC_EMAC4
+	select IBM_NEW_EMAC_RGMII
+	select IBM_NEW_EMAC_ZMII
+	select IBM_NEW_EMAC_TAH
+
 # 44x errata/workaround config symbols, selected by the CPU models above
 config IBM440EP_ERR42
 	bool
diff --git a/arch/powerpc/platforms/44x/ppc44x_simple.c b/arch/powerpc/platforms/44x/ppc44x_simple.c
index 76fdc51dac8..5bcd441885e 100644
--- a/arch/powerpc/platforms/44x/ppc44x_simple.c
+++ b/arch/powerpc/platforms/44x/ppc44x_simple.c
@@ -57,6 +57,7 @@ static char *board[] __initdata = {
 	"ibm,ebony",
 	"amcc,katmai",
 	"amcc,rainier",
+	"amcc,redwood",
 	"amcc,sequoia",
 	"amcc,taishan",
 	"amcc,yosemite"
-- 
cgit v1.2.3


From 60ee031940c1b09c137b617a8829e2f081961fe0 Mon Sep 17 00:00:00 2001
From: Jeremy Kerr <jk@ozlabs.org>
Date: Tue, 17 Feb 2009 11:44:14 +1100
Subject: powerpc/spufs: Use correct return value for spu_handle_mm_fault

Currently, spu_handle_mm_fault disregards the 'ret' variable and always
returns -EFAULT on error.

This change refactos spu_handle_mm_fault a little, to return the
ret variable as appropriate. This allows us to combine the error and
sucess paths.

Also, remove the #if-0-ed IS_VALID_EA() check, it has never been
used.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/cell/spu_fault.c | 48 +++++++++++++++------------------
 1 file changed, 22 insertions(+), 26 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/cell/spu_fault.c b/arch/powerpc/platforms/cell/spu_fault.c
index c8b1cd42905..95d8dadf2d8 100644
--- a/arch/powerpc/platforms/cell/spu_fault.c
+++ b/arch/powerpc/platforms/cell/spu_fault.c
@@ -39,60 +39,56 @@ int spu_handle_mm_fault(struct mm_struct *mm, unsigned long ea,
 	unsigned long is_write;
 	int ret;
 
-#if 0
-	if (!IS_VALID_EA(ea)) {
+	if (mm == NULL)
 		return -EFAULT;
-	}
-#endif /* XXX */
-	if (mm == NULL) {
-		return -EFAULT;
-	}
-	if (mm->pgd == NULL) {
+
+	if (mm->pgd == NULL)
 		return -EFAULT;
-	}
 
 	down_read(&mm->mmap_sem);
+	ret = -EFAULT;
 	vma = find_vma(mm, ea);
 	if (!vma)
-		goto bad_area;
-	if (vma->vm_start <= ea)
-		goto good_area;
-	if (!(vma->vm_flags & VM_GROWSDOWN))
-		goto bad_area;
-	if (expand_stack(vma, ea))
-		goto bad_area;
-good_area:
+		goto out_unlock;
+
+	if (ea < vma->vm_start) {
+		if (!(vma->vm_flags & VM_GROWSDOWN))
+			goto out_unlock;
+		if (expand_stack(vma, ea))
+			goto out_unlock;
+	}
+
 	is_write = dsisr & MFC_DSISR_ACCESS_PUT;
 	if (is_write) {
 		if (!(vma->vm_flags & VM_WRITE))
-			goto bad_area;
+			goto out_unlock;
 	} else {
 		if (dsisr & MFC_DSISR_ACCESS_DENIED)
-			goto bad_area;
+			goto out_unlock;
 		if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
-			goto bad_area;
+			goto out_unlock;
 	}
+
 	ret = 0;
 	*flt = handle_mm_fault(mm, vma, ea, is_write);
 	if (unlikely(*flt & VM_FAULT_ERROR)) {
 		if (*flt & VM_FAULT_OOM) {
 			ret = -ENOMEM;
-			goto bad_area;
+			goto out_unlock;
 		} else if (*flt & VM_FAULT_SIGBUS) {
 			ret = -EFAULT;
-			goto bad_area;
+			goto out_unlock;
 		}
 		BUG();
 	}
+
 	if (*flt & VM_FAULT_MAJOR)
 		current->maj_flt++;
 	else
 		current->min_flt++;
-	up_read(&mm->mmap_sem);
-	return ret;
 
-bad_area:
+out_unlock:
 	up_read(&mm->mmap_sem);
-	return -EFAULT;
+	return ret;
 }
 EXPORT_SYMBOL_GPL(spu_handle_mm_fault);
-- 
cgit v1.2.3


From 3688b46b89a1a64d5eeb0df5f9d82e109712fffe Mon Sep 17 00:00:00 2001
From: Jeremy Kerr <jk@ozlabs.org>
Date: Tue, 17 Feb 2009 11:44:14 +1100
Subject: powerpc/spufs: Clear purge status before setting up isolated mode

Currently, we may setup the MFC for isolated mode initilaisation with
the purge still active. This means that DMAs required to perform the
init do not happen.

This change clears the purge status after doing the purge, so that
the isolated init can proceed.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/cell/spufs/run.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/cell/spufs/run.c b/arch/powerpc/platforms/cell/spufs/run.c
index c58bd36b0c5..4ddf769a64e 100644
--- a/arch/powerpc/platforms/cell/spufs/run.c
+++ b/arch/powerpc/platforms/cell/spufs/run.c
@@ -117,6 +117,9 @@ static int spu_setup_isolated(struct spu_context *ctx)
 		cond_resched();
 	}
 
+	/* clear purge status */
+	out_be64(mfc_cntl, 0);
+
 	/* put the SPE in kernel mode to allow access to the loader */
 	sr1 = spu_mfc_sr1_get(ctx->spu);
 	sr1 &= ~MFC_STATE1_PROBLEM_STATE_MASK;
-- 
cgit v1.2.3


From 74254647e06452faff3675f9cd347ef2a5d63d90 Mon Sep 17 00:00:00 2001
From: Jeremy Kerr <jk@ozlabs.org>
Date: Tue, 17 Feb 2009 11:44:14 +1100
Subject: powerpc/spufs: Constify context contents and coredump callback
 constants

The spufs context directory contents definitions are not changed after
initialisation, so we can declare them as const. We can do the same
with the spu coredump reader callbacks too.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/cell/spufs/file.c  | 8 ++++----
 arch/powerpc/platforms/cell/spufs/inode.c | 5 +++--
 arch/powerpc/platforms/cell/spufs/spufs.h | 8 ++++----
 3 files changed, 11 insertions(+), 10 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index 0da7f2bf5ee..9e4f2739341 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -2665,7 +2665,7 @@ static const struct file_operations spufs_ctx_fops = {
 	.release        = single_release,
 };
 
-struct spufs_tree_descr spufs_dir_contents[] = {
+const struct spufs_tree_descr spufs_dir_contents[] = {
 	{ "capabilities", &spufs_caps_fops, 0444, },
 	{ "mem",  &spufs_mem_fops,  0666, LS_SIZE, },
 	{ "regs", &spufs_regs_fops,  0666, sizeof(struct spu_reg128[128]), },
@@ -2706,7 +2706,7 @@ struct spufs_tree_descr spufs_dir_contents[] = {
 	{},
 };
 
-struct spufs_tree_descr spufs_dir_nosched_contents[] = {
+const struct spufs_tree_descr spufs_dir_nosched_contents[] = {
 	{ "capabilities", &spufs_caps_fops, 0444, },
 	{ "mem",  &spufs_mem_fops,  0666, LS_SIZE, },
 	{ "mbox", &spufs_mbox_fops, 0444, },
@@ -2731,12 +2731,12 @@ struct spufs_tree_descr spufs_dir_nosched_contents[] = {
 	{},
 };
 
-struct spufs_tree_descr spufs_dir_debug_contents[] = {
+const struct spufs_tree_descr spufs_dir_debug_contents[] = {
 	{ ".ctx", &spufs_ctx_fops, 0444, },
 	{},
 };
 
-struct spufs_coredump_reader spufs_coredump_read[] = {
+const struct spufs_coredump_reader spufs_coredump_read[] = {
 	{ "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])},
 	{ "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) },
 	{ "lslr", NULL, spufs_lslr_get, 19 },
diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index e309ef70a53..64f068540d0 100644
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -186,8 +186,9 @@ static int spufs_rmdir(struct inode *parent, struct dentry *dir)
 	return simple_rmdir(parent, dir);
 }
 
-static int spufs_fill_dir(struct dentry *dir, struct spufs_tree_descr *files,
-			  int mode, struct spu_context *ctx)
+static int spufs_fill_dir(struct dentry *dir,
+		const struct spufs_tree_descr *files, int mode,
+		struct spu_context *ctx)
 {
 	struct dentry *dentry, *tmp;
 	int ret;
diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h
index 3bf908e2873..ae31573bea4 100644
--- a/arch/powerpc/platforms/cell/spufs/spufs.h
+++ b/arch/powerpc/platforms/cell/spufs/spufs.h
@@ -241,9 +241,9 @@ struct spufs_tree_descr {
 	size_t size;
 };
 
-extern struct spufs_tree_descr spufs_dir_contents[];
-extern struct spufs_tree_descr spufs_dir_nosched_contents[];
-extern struct spufs_tree_descr spufs_dir_debug_contents[];
+extern const struct spufs_tree_descr spufs_dir_contents[];
+extern const struct spufs_tree_descr spufs_dir_nosched_contents[];
+extern const struct spufs_tree_descr spufs_dir_debug_contents[];
 
 /* system call implementation */
 extern struct spufs_calls spufs_calls;
@@ -358,7 +358,7 @@ struct spufs_coredump_reader {
 	u64 (*get)(struct spu_context *ctx);
 	size_t size;
 };
-extern struct spufs_coredump_reader spufs_coredump_read[];
+extern const struct spufs_coredump_reader spufs_coredump_read[];
 extern int spufs_coredump_num_notes;
 
 extern int spu_init_csa(struct spu_state *csa);
-- 
cgit v1.2.3


From 6ed8d12849d651c646c108807754a544d2e506f1 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Tue, 10 Feb 2009 05:55:16 +0000
Subject: powerpc/cell: Fix dependency in cpufreq

cbe_cpufreq has a partial dependency on cbe_cpufreq_pmi, which cannot
be easily expressed in Kconfig. This fixes it by introducing an
extra Kconfig symbol CBE_CPUFREQ_PMI_ENABLE. To make the dependency
clearer, turn PPC_PMI into an automatic symbol.

Reported-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/Kconfig      |  9 ---------
 arch/powerpc/platforms/cell/Kconfig | 22 ++++++++++++++++++----
 2 files changed, 18 insertions(+), 13 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index b25404ca221..b4ab3728653 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -92,15 +92,6 @@ config RTAS_FLASH
 	tristate "Firmware flash interface"
 	depends on PPC64 && RTAS_PROC
 
-config PPC_PMI
-	tristate "Support for PMI"
-	depends on PPC_IBM_CELL_BLADE
-	help
-	  PMI (Platform Management Interrupt) is a way to
-	  communicate with the BMC (Baseboard Management Controller).
-	  It is used in some IBM Cell blades.
-	default m
-
 config MMIO_NVRAM
 	bool
 	default n
diff --git a/arch/powerpc/platforms/cell/Kconfig b/arch/powerpc/platforms/cell/Kconfig
index 5cc3279559a..037f59a4bfe 100644
--- a/arch/powerpc/platforms/cell/Kconfig
+++ b/arch/powerpc/platforms/cell/Kconfig
@@ -98,7 +98,7 @@ config PPC_IBM_CELL_RESETBUTTON
 
 config PPC_IBM_CELL_POWERBUTTON
 	tristate "IBM Cell Blade power button"
-	depends on PPC_IBM_CELL_BLADE && PPC_PMI && INPUT_EVDEV
+	depends on PPC_IBM_CELL_BLADE && INPUT_EVDEV
 	default y
 	help
 	  Support Powerbutton on IBM Cell blades.
@@ -118,9 +118,9 @@ config CBE_CPUFREQ
 	  For details, take a look at <file:Documentation/cpu-freq/>.
 	  If you don't have such processor, say N
 
-config CBE_CPUFREQ_PMI
-	tristate "CBE frequency scaling using PMI interface"
-	depends on CBE_CPUFREQ && PPC_PMI && EXPERIMENTAL
+config CBE_CPUFREQ_PMI_ENABLE
+	bool "CBE frequency scaling using PMI interface"
+	depends on CBE_CPUFREQ && EXPERIMENTAL
 	default n
 	help
 	  Select this, if you want to use the PMI interface
@@ -128,6 +128,20 @@ config CBE_CPUFREQ_PMI
 	  processor will not only be able to run at lower speed,
 	  but also at lower core voltage.
 
+config CBE_CPUFREQ_PMI
+	tristate
+	depends on CBE_CPUFREQ_PMI_ENABLE
+	default CBE_CPUFREQ
+
+config PPC_PMI
+	tristate
+	default y
+	depends on CBE_CPUFREQ_PMI || PPC_IBM_CELL_POWERBUTTON
+	help
+	  PMI (Platform Management Interrupt) is a way to
+	  communicate with the BMC (Baseboard Management Controller).
+	  It is used in some IBM Cell blades.
+
 config CBE_CPUFREQ_SPU_GOVERNOR
 	tristate "CBE frequency scaling based on SPU usage"
 	depends on SPU_FS && CPU_FREQ
-- 
cgit v1.2.3


From d523cc379da57f1c39f5db9c47bdaa94f74727ff Mon Sep 17 00:00:00 2001
From: Michael Ellerman <michael@ellerman.id.au>
Date: Tue, 17 Feb 2009 00:18:49 +0000
Subject: powerpc/pseries: Return req#msi(-x) if request is larger

If a driver asks for more MSIs than the devices "req#msi(-x)" property,
we currently return -ENOSPC. This doesn't give the driver any chance to
make a new request with a number that might work.

So if "req#msi(-x)" is less than the request, return its value. To be
100% safe, make sure we return an error if req_msi == 0.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/pseries/msi.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c
index 073b518338a..081af6d7fa0 100644
--- a/arch/powerpc/platforms/pseries/msi.c
+++ b/arch/powerpc/platforms/pseries/msi.c
@@ -154,7 +154,11 @@ static int check_req(struct pci_dev *pdev, int nvec, char *prop_name)
 
 	if (*req_msi < nvec) {
 		pr_debug("rtas_msi: %s requests < %d MSIs\n", prop_name, nvec);
-		return -ENOSPC;
+
+		if (*req_msi == 0) /* Be paranoid */
+			return -ENOSPC;
+
+		return *req_msi;
 	}
 
 	return 0;
-- 
cgit v1.2.3


From 448e2ca0e32a5c437650d634b6032ab732662338 Mon Sep 17 00:00:00 2001
From: Michael Ellerman <michael@ellerman.id.au>
Date: Tue, 17 Feb 2009 00:21:56 +0000
Subject: powerpc/pseries: Implement a quota system for MSIs

There are hardware limitations on the number of available MSIs,
which firmware expresses using a property named "ibm,pe-total-#msi".
This property tells us how many MSIs are available for devices below
the point in the PCI tree where we find the property.

For old firmwares which don't have the property, we assume there are
8 MSIs available per "partitionable endpoint" (PE). The PE can be
found using existing EEH code, which uses the methods described in
PAPR. For our purposes we want the parent of the node that's
identified using this method.

When a driver requests n MSIs for a device, we first establish where
the "ibm,pe-total-#msi" property above that device is, or we find the
PE if the property is not found. In both cases we call this node
the "pe_dn".

We then count all non-bridge devices below the pe_dn, to establish
how many devices in total may need MSIs. The quota is then simply the
total available divided by the number of devices, if the request is
less than or equal to the quota, the request is fine and we're done.

If the request is greater than the quota, we try to determine if there
are any "spare" MSIs which we can give to this device. Spare MSIs are
found by looking for other devices which can never use their full
quota, because their "req#msi(-x)" property is less than the quota.

If we find any spare, we divide the spares by the number of devices
that could request more than their quota. This ensures the spare
MSIs are spread evenly amongst all over-quota requestors.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/pseries/msi.c | 178 ++++++++++++++++++++++++++++++++++-
 1 file changed, 176 insertions(+), 2 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c
index 081af6d7fa0..3e0d6ef3eca 100644
--- a/arch/powerpc/platforms/pseries/msi.c
+++ b/arch/powerpc/platforms/pseries/msi.c
@@ -174,12 +174,186 @@ static int check_req_msix(struct pci_dev *pdev, int nvec)
 	return check_req(pdev, nvec, "ibm,req#msi-x");
 }
 
+/* Quota calculation */
+
+static struct device_node *find_pe_total_msi(struct pci_dev *dev, int *total)
+{
+	struct device_node *dn;
+	const u32 *p;
+
+	dn = of_node_get(pci_device_to_OF_node(dev));
+	while (dn) {
+		p = of_get_property(dn, "ibm,pe-total-#msi", NULL);
+		if (p) {
+			pr_debug("rtas_msi: found prop on dn %s\n",
+				dn->full_name);
+			*total = *p;
+			return dn;
+		}
+
+		dn = of_get_next_parent(dn);
+	}
+
+	return NULL;
+}
+
+static struct device_node *find_pe_dn(struct pci_dev *dev, int *total)
+{
+	struct device_node *dn;
+
+	/* Found our PE and assume 8 at that point. */
+
+	dn = pci_device_to_OF_node(dev);
+	if (!dn)
+		return NULL;
+
+	dn = find_device_pe(dn);
+	if (!dn)
+		return NULL;
+
+	/* We actually want the parent */
+	dn = of_get_parent(dn);
+	if (!dn)
+		return NULL;
+
+	/* Hardcode of 8 for old firmwares */
+	*total = 8;
+	pr_debug("rtas_msi: using PE dn %s\n", dn->full_name);
+
+	return dn;
+}
+
+struct msi_counts {
+	struct device_node *requestor;
+	int num_devices;
+	int request;
+	int quota;
+	int spare;
+	int over_quota;
+};
+
+static void *count_non_bridge_devices(struct device_node *dn, void *data)
+{
+	struct msi_counts *counts = data;
+	const u32 *p;
+	u32 class;
+
+	pr_debug("rtas_msi: counting %s\n", dn->full_name);
+
+	p = of_get_property(dn, "class-code", NULL);
+	class = p ? *p : 0;
+
+	if ((class >> 8) != PCI_CLASS_BRIDGE_PCI)
+		counts->num_devices++;
+
+	return NULL;
+}
+
+static void *count_spare_msis(struct device_node *dn, void *data)
+{
+	struct msi_counts *counts = data;
+	const u32 *p;
+	int req;
+
+	if (dn == counts->requestor)
+		req = counts->request;
+	else {
+		/* We don't know if a driver will try to use MSI or MSI-X,
+		 * so we just have to punt and use the larger of the two. */
+		req = 0;
+		p = of_get_property(dn, "ibm,req#msi", NULL);
+		if (p)
+			req = *p;
+
+		p = of_get_property(dn, "ibm,req#msi-x", NULL);
+		if (p)
+			req = max(req, (int)*p);
+	}
+
+	if (req < counts->quota)
+		counts->spare += counts->quota - req;
+	else if (req > counts->quota)
+		counts->over_quota++;
+
+	return NULL;
+}
+
+static int msi_quota_for_device(struct pci_dev *dev, int request)
+{
+	struct device_node *pe_dn;
+	struct msi_counts counts;
+	int total;
+
+	pr_debug("rtas_msi: calc quota for %s, request %d\n", pci_name(dev),
+		  request);
+
+	pe_dn = find_pe_total_msi(dev, &total);
+	if (!pe_dn)
+		pe_dn = find_pe_dn(dev, &total);
+
+	if (!pe_dn) {
+		pr_err("rtas_msi: couldn't find PE for %s\n", pci_name(dev));
+		goto out;
+	}
+
+	pr_debug("rtas_msi: found PE %s\n", pe_dn->full_name);
+
+	memset(&counts, 0, sizeof(struct msi_counts));
+
+	/* Work out how many devices we have below this PE */
+	traverse_pci_devices(pe_dn, count_non_bridge_devices, &counts);
+
+	if (counts.num_devices == 0) {
+		pr_err("rtas_msi: found 0 devices under PE for %s\n",
+			pci_name(dev));
+		goto out;
+	}
+
+	counts.quota = total / counts.num_devices;
+	if (request <= counts.quota)
+		goto out;
+
+	/* else, we have some more calculating to do */
+	counts.requestor = pci_device_to_OF_node(dev);
+	counts.request = request;
+	traverse_pci_devices(pe_dn, count_spare_msis, &counts);
+
+	/* If the quota isn't an integer multiple of the total, we can
+	 * use the remainder as spare MSIs for anyone that wants them. */
+	counts.spare += total % counts.num_devices;
+
+	/* Divide any spare by the number of over-quota requestors */
+	if (counts.over_quota)
+		counts.quota += counts.spare / counts.over_quota;
+
+	/* And finally clamp the request to the possibly adjusted quota */
+	request = min(counts.quota, request);
+
+	pr_debug("rtas_msi: request clamped to quota %d\n", request);
+out:
+	of_node_put(pe_dn);
+
+	return request;
+}
+
 static int rtas_msi_check_device(struct pci_dev *pdev, int nvec, int type)
 {
+	int quota, rc;
+
 	if (type == PCI_CAP_ID_MSIX)
-		return check_req_msix(pdev, nvec);
+		rc = check_req_msix(pdev, nvec);
+	else
+		rc = check_req_msi(pdev, nvec);
+
+	if (rc)
+		return rc;
 
-	return check_req_msi(pdev, nvec);
+	quota = msi_quota_for_device(pdev, nvec);
+
+	if (quota && quota < nvec)
+		return quota;
+
+	return 0;
 }
 
 static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
-- 
cgit v1.2.3


From 41fd81cc568156af90913c248c40788b6f57c887 Mon Sep 17 00:00:00 2001
From: Benjamin Krill <ben@codiert.org>
Date: Fri, 20 Feb 2009 03:09:39 +0000
Subject: powerpc/cell: Add rtas rtc calls for the QPACE platform

The new firmware release exports further RTC calls. This
patch adds these calls to the QPACE platform setup file.

Signed-off-by: Benjamin Krill <ben@codiert.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/cell/qpace_setup.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/cell/qpace_setup.c b/arch/powerpc/platforms/cell/qpace_setup.c
index be84e6a16b3..c75b66278fa 100644
--- a/arch/powerpc/platforms/cell/qpace_setup.c
+++ b/arch/powerpc/platforms/cell/qpace_setup.c
@@ -141,6 +141,8 @@ define_machine(qpace) {
 	.power_off		= rtas_power_off,
 	.halt			= rtas_halt,
 	.get_boot_time		= rtas_get_boot_time,
+	.get_rtc_time		= rtas_get_rtc_time,
+	.set_rtc_time		= rtas_set_rtc_time,
 	.calibrate_decr		= generic_calibrate_decr,
 	.progress		= qpace_progress,
 	.init_IRQ		= iic_init_IRQ,
-- 
cgit v1.2.3


From 4c4ece3cf8391e842f2c67a4760885e0acb3a461 Mon Sep 17 00:00:00 2001
From: Giuliano Pochini <pochini@shiny.it>
Date: Sat, 21 Feb 2009 12:21:25 +0000
Subject: powerpc/powermac: Hotplug /sys entries are missing

On Wed, 18 Feb 2009 22:18:21 +0100
Giuliano Pochini <pochini@shiny.it> wrote:

Since 2.6.28, /sys/devices/system/cpu/cpu*/online don't exist anymore
on 32-bit PowerMacs due to change in the generic powerpc code.

Signed-off-by: Giuliano Pochini <pochini@shiny.it>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/powermac/setup.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index 9b78f5300c2..45936c9ed0e 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -746,4 +746,7 @@ define_machine(powermac) {
 #if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC64)
 	.cpu_die		= pmac_cpu_die,
 #endif
+#if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC32)
+	.cpu_die		= generic_mach_cpu_die,
+#endif
 };
-- 
cgit v1.2.3


From aafbf16b89c6888add3ea22fde1b5ac3f5aaf947 Mon Sep 17 00:00:00 2001
From: Grant Likely <grant.likely@secretlab.ca>
Date: Thu, 26 Feb 2009 23:19:36 -0700
Subject: powerpc/5200: Add 'simple-bus' to the of_platform probe list.

To better match the ePAPR specification, device nodes which claim
"simple-bus" compatibility should be probed by default.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---
 arch/powerpc/platforms/52xx/mpc52xx_common.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/52xx/mpc52xx_common.c b/arch/powerpc/platforms/52xx/mpc52xx_common.c
index 98367a0255f..e9d2cf632ee 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_common.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_common.c
@@ -28,9 +28,10 @@ static struct of_device_id mpc52xx_xlb_ids[] __initdata = {
 static struct of_device_id mpc52xx_bus_ids[] __initdata = {
 	{ .compatible = "fsl,mpc5200-immr", },
 	{ .compatible = "fsl,mpc5200b-immr", },
-	{ .compatible = "fsl,lpb", },
+	{ .compatible = "simple-bus", },
 
 	/* depreciated matches; shouldn't be used in new device trees */
+	{ .compatible = "fsl,lpb", },
 	{ .type = "builtin", .compatible = "mpc5200", }, /* efika */
 	{ .type = "soc", .compatible = "mpc5200", }, /* lite5200 */
 	{}
-- 
cgit v1.2.3


From c026c98739c7e435440e76cbcd96e0f8ebeeada0 Mon Sep 17 00:00:00 2001
From: Anton Vorontsov <avorontsov@ru.mvista.com>
Date: Thu, 19 Feb 2009 19:02:23 +0300
Subject: powerpc/83xx: Do not configure or probe disabled FSL DR USB
 controllers

On MPC837X CPUs Dual-Role USB isn't always available (for example DR
USB pins can be muxed away to eSDHC).

U-Boot adds status = "disabled" property into the DR USB nodes to
indicate that we must not try to configure or probe Dual-Role USB,
otherwise we'll break eSDHC support on targets with MPC837X CPUs.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 arch/powerpc/platforms/83xx/usb.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/83xx/usb.c b/arch/powerpc/platforms/83xx/usb.c
index cc99c280aad..11e1fac17c7 100644
--- a/arch/powerpc/platforms/83xx/usb.c
+++ b/arch/powerpc/platforms/83xx/usb.c
@@ -14,6 +14,7 @@
 #include <linux/stddef.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
+#include <linux/of.h>
 
 #include <asm/io.h>
 #include <asm/prom.h>
@@ -210,7 +211,7 @@ int mpc837x_usb_cfg(void)
 	int ret = 0;
 
 	np = of_find_compatible_node(NULL, NULL, "fsl-usb2-dr");
-	if (!np)
+	if (!np || !of_device_is_available(np))
 		return -ENODEV;
 	prop = of_get_property(np, "phy_type", NULL);
 
-- 
cgit v1.2.3


From 16962e7ce1dce29e1e92d231ac7d6844d7385d54 Mon Sep 17 00:00:00 2001
From: Nick Piggin <npiggin@suse.de>
Date: Thu, 19 Feb 2009 07:07:41 +0000
Subject: powerpc: Estimate G5 cpufreq transition latency

Setting G5's cpu frequency transition latency to CPUFREQ_ETERNAL stops
ondemand governor from working. I measured the latency using sched_clock
and haven't seen much higher than 11000ns, so I set this to 12000ns for
my configuration. Possibly other configurations will be different?
Ideally the generic code would be able to measure it in case the platform
does not provide it.

But this simple patch at least makes it throttle again.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/powermac/cpufreq_64.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/powermac/cpufreq_64.c b/arch/powerpc/platforms/powermac/cpufreq_64.c
index beb38333b6d..22ecfbe7183 100644
--- a/arch/powerpc/platforms/powermac/cpufreq_64.c
+++ b/arch/powerpc/platforms/powermac/cpufreq_64.c
@@ -86,6 +86,7 @@ static int (*g5_query_freq)(void);
 
 static DEFINE_MUTEX(g5_switch_mutex);
 
+static unsigned long transition_latency;
 
 #ifdef CONFIG_PMAC_SMU
 
@@ -357,7 +358,7 @@ static unsigned int g5_cpufreq_get_speed(unsigned int cpu)
 
 static int g5_cpufreq_cpu_init(struct cpufreq_policy *policy)
 {
-	policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
+	policy->cpuinfo.transition_latency = transition_latency;
 	policy->cur = g5_cpu_freqs[g5_query_freq()].frequency;
 	/* secondary CPUs are tied to the primary one by the
 	 * cpufreq core if in the secondary policy we tell it that
@@ -500,6 +501,7 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
 	g5_cpu_freqs[1].frequency = max_freq/2;
 
 	/* Set callbacks */
+	transition_latency = 12000;
 	g5_switch_freq = g5_scom_switch_freq;
 	g5_query_freq = g5_scom_query_freq;
 	freq_method = "SCOM";
@@ -675,6 +677,7 @@ static int __init g5_pm72_cpufreq_init(struct device_node *cpus)
 	g5_cpu_freqs[1].frequency = min_freq;
 
 	/* Set callbacks */
+	transition_latency = CPUFREQ_ETERNAL;
 	g5_switch_volt = g5_pfunc_switch_volt;
 	g5_switch_freq = g5_pfunc_switch_freq;
 	g5_query_freq = g5_pfunc_query_freq;
-- 
cgit v1.2.3


From 1cdab55d8a8313f77a95fb8ca966dc4334f8e810 Mon Sep 17 00:00:00 2001
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Sun, 22 Feb 2009 16:19:14 +0000
Subject: powerpc: Wire up /proc/vmallocinfo to our ioremap()

This adds the necessary bits and pieces to powerpc implementation of
ioremap to benefit from caller tracking in /proc/vmallocinfo, at least
for ioremap's done after mem init as the older ones aren't tracked.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/cell/io-workarounds.c | 4 ++--
 arch/powerpc/platforms/iseries/setup.c       | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/cell/io-workarounds.c b/arch/powerpc/platforms/cell/io-workarounds.c
index 059cad6c3f6..5c1118e3194 100644
--- a/arch/powerpc/platforms/cell/io-workarounds.c
+++ b/arch/powerpc/platforms/cell/io-workarounds.c
@@ -131,10 +131,10 @@ static const struct ppc_pci_io __devinitconst iowa_pci_io = {
 };
 
 static void __iomem *iowa_ioremap(phys_addr_t addr, unsigned long size,
-						unsigned long flags)
+				  unsigned long flags, void *caller)
 {
 	struct iowa_bus *bus;
-	void __iomem *res = __ioremap(addr, size, flags);
+	void __iomem *res = __ioremap_caller(addr, size, flags, caller);
 	int busno;
 
 	bus = iowa_pci_find(0, (unsigned long)addr);
diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c
index 24519b96d6a..a6cd3394fea 100644
--- a/arch/powerpc/platforms/iseries/setup.c
+++ b/arch/powerpc/platforms/iseries/setup.c
@@ -617,7 +617,7 @@ static void iseries_dedicated_idle(void)
 }
 
 static void __iomem *iseries_ioremap(phys_addr_t address, unsigned long size,
-				     unsigned long flags)
+				     unsigned long flags, void *caller)
 {
 	return (void __iomem *)address;
 }
-- 
cgit v1.2.3


From 8f748aae4b5eda6a6ec3ab3554e7e19c7702ccc2 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Mon, 23 Feb 2009 21:44:37 +0000
Subject: powerpc/spufs: Initialize ctx->stats.tstamp correctly

spuctx_switch_state() warns if ktime goes backwards, but it
sometimes compares an uninitialized value, which showed that
the data was unreliable when we actually saw the warning.

Initialize it to the current time in order to get correct data.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/cell/spufs/context.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/cell/spufs/context.c b/arch/powerpc/platforms/cell/spufs/context.c
index 6653ddbed04..db5398c0339 100644
--- a/arch/powerpc/platforms/cell/spufs/context.c
+++ b/arch/powerpc/platforms/cell/spufs/context.c
@@ -35,6 +35,8 @@ atomic_t nr_spu_contexts = ATOMIC_INIT(0);
 struct spu_context *alloc_spu_context(struct spu_gang *gang)
 {
 	struct spu_context *ctx;
+	struct timespec ts;
+
 	ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
 	if (!ctx)
 		goto out;
@@ -64,6 +66,8 @@ struct spu_context *alloc_spu_context(struct spu_gang *gang)
 	__spu_update_sched_info(ctx);
 	spu_set_timeslice(ctx);
 	ctx->stats.util_state = SPU_UTIL_IDLE_LOADED;
+	ktime_get_ts(&ts);
+	ctx->stats.tstamp = timespec_to_ns(&ts);
 
 	atomic_inc(&nr_spu_contexts);
 	goto out;
-- 
cgit v1.2.3


From 9146cfc82c082e5c88007e7779b02b7bcade0cf0 Mon Sep 17 00:00:00 2001
From: Geoff Levand <geoffrey.levand@am.sony.com>
Date: Tue, 3 Mar 2009 08:33:06 +0000
Subject: powerpc/ps3: Print memory hotplug errors

To help users diagnose hotpug memory problems, change the
printing of memory hotplug errors from DBG() to pr_err().

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/ps3/mm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/ps3/mm.c b/arch/powerpc/platforms/ps3/mm.c
index d281cc0bca7..9a2b6d94861 100644
--- a/arch/powerpc/platforms/ps3/mm.c
+++ b/arch/powerpc/platforms/ps3/mm.c
@@ -311,7 +311,7 @@ static int __init ps3_mm_add_memory(void)
 	result = add_memory(0, start_addr, map.r1.size);
 
 	if (result) {
-		DBG("%s:%d: add_memory failed: (%d)\n",
+		pr_err("%s:%d: add_memory failed: (%d)\n",
 			__func__, __LINE__, result);
 		return result;
 	}
@@ -322,7 +322,7 @@ static int __init ps3_mm_add_memory(void)
 	result = online_pages(start_pfn, nr_pages);
 
 	if (result)
-		DBG("%s:%d: online_pages failed: (%d)\n",
+		pr_err("%s:%d: online_pages failed: (%d)\n",
 			__func__, __LINE__, result);
 
 	return result;
-- 
cgit v1.2.3


From d219889b769a56901c9a916187ee0af95e6ff8a6 Mon Sep 17 00:00:00 2001
From: Jeremy Kerr <jk@ozlabs.org>
Date: Tue, 3 Mar 2009 19:38:07 +0000
Subject: powerpc/spufs: Check file offset before calculating write size in
 fixed-sized files

Based on an original patch from Roel Kluin <roel.kluin@gmail.com>.

The write size calculated during regs and fpcr writes may currently
go negative. Because size is unsigned, this will wrap, and our
check for EFBIG will fail.

Instead, do the check for EFBIG before subtracting from size.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/cell/spufs/file.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index 9e4f2739341..be0120d9b50 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -568,9 +568,10 @@ spufs_regs_write(struct file *file, const char __user *buffer,
 	struct spu_lscsa *lscsa = ctx->csa.lscsa;
 	int ret;
 
-	size = min_t(ssize_t, sizeof lscsa->gprs - *pos, size);
-	if (size <= 0)
+	if (*pos >= sizeof(lscsa->gprs))
 		return -EFBIG;
+
+	size = min_t(ssize_t, sizeof(lscsa->gprs) - *pos, size);
 	*pos += size;
 
 	ret = spu_acquire_saved(ctx);
@@ -623,10 +624,11 @@ spufs_fpcr_write(struct file *file, const char __user * buffer,
 	struct spu_lscsa *lscsa = ctx->csa.lscsa;
 	int ret;
 
-	size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size);
-	if (size <= 0)
+	if (*pos >= sizeof(lscsa->fpcr))
 		return -EFBIG;
 
+	size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size);
+
 	ret = spu_acquire_saved(ctx);
 	if (ret)
 		return ret;
-- 
cgit v1.2.3


From 2fb4423aa38b598fa688bbd53a835bb7628c445b Mon Sep 17 00:00:00 2001
From: Jeremy Kerr <jk@ozlabs.org>
Date: Tue, 3 Mar 2009 19:39:32 +0000
Subject: powerpc/spufs: Fix incorrect buffer offset in regs write

We need to offset by *pos bytes, not *pos words.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/cell/spufs/file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index be0120d9b50..d6a519e6e1c 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -578,7 +578,7 @@ spufs_regs_write(struct file *file, const char __user *buffer,
 	if (ret)
 		return ret;
 
-	ret = copy_from_user(lscsa->gprs + *pos - size,
+	ret = copy_from_user((char *)lscsa->gprs + *pos - size,
 			     buffer, size) ? -EFAULT : size;
 
 	spu_release_saved(ctx);
-- 
cgit v1.2.3


From 94afa5a5f54235c4612198768b6a2fa2e2366f44 Mon Sep 17 00:00:00 2001
From: Michael Ellerman <michael@ellerman.id.au>
Date: Thu, 5 Mar 2009 14:44:26 +0000
Subject: powerpc/pseries: Reject discontiguous/non-zero based MSI-X requests

There's no way for us to express to firmware that we want a
discontiguous, or non-zero based, range of MSI-X entries. So we
must reject such requests.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/pseries/msi.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c
index 3e0d6ef3eca..bf2e1ac4130 100644
--- a/arch/powerpc/platforms/pseries/msi.c
+++ b/arch/powerpc/platforms/pseries/msi.c
@@ -356,6 +356,27 @@ static int rtas_msi_check_device(struct pci_dev *pdev, int nvec, int type)
 	return 0;
 }
 
+static int check_msix_entries(struct pci_dev *pdev)
+{
+	struct msi_desc *entry;
+	int expected;
+
+	/* There's no way for us to express to firmware that we want
+	 * a discontiguous, or non-zero based, range of MSI-X entries.
+	 * So we must reject such requests. */
+
+	expected = 0;
+	list_for_each_entry(entry, &pdev->msi_list, list) {
+		if (entry->msi_attrib.entry_nr != expected) {
+			pr_debug("rtas_msi: bad MSI-X entries.\n");
+			return -EINVAL;
+		}
+		expected++;
+	}
+
+	return 0;
+}
+
 static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
 {
 	struct pci_dn *pdn;
@@ -367,6 +388,9 @@ static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
 	if (!pdn)
 		return -ENODEV;
 
+	if (type == PCI_CAP_ID_MSIX && check_msix_entries(pdev))
+		return -EINVAL;
+
 	/*
 	 * Try the new more explicit firmware interface, if that fails fall
 	 * back to the old interface. The old interface is known to never
-- 
cgit v1.2.3


From 1bac0221554d2e9153e6aff2272ee833b5bff980 Mon Sep 17 00:00:00 2001
From: Michael Ellerman <michael@ellerman.id.au>
Date: Thu, 5 Mar 2009 17:36:39 +0000
Subject: powerpc/pseries: The pseries MSI code depends on EEH

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/pseries/Kconfig  | 5 +++++
 arch/powerpc/platforms/pseries/Makefile | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig
index ddc2a307cd5..095ff6f846b 100644
--- a/arch/powerpc/platforms/pseries/Kconfig
+++ b/arch/powerpc/platforms/pseries/Kconfig
@@ -25,6 +25,11 @@ config EEH
 	depends on PPC_PSERIES && PCI
 	default y if !EMBEDDED
 
+config PSERIES_MSI
+       bool
+       depends on PCI_MSI && EEH
+       default y
+
 config SCANLOG
 	tristate "Scanlog dump interface"
 	depends on RTAS_PROC && PPC_PSERIES
diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile
index dfe574af2dc..0ce691df595 100644
--- a/arch/powerpc/platforms/pseries/Makefile
+++ b/arch/powerpc/platforms/pseries/Makefile
@@ -15,7 +15,7 @@ obj-$(CONFIG_SCANLOG)	+= scanlog.o
 obj-$(CONFIG_EEH)	+= eeh.o eeh_cache.o eeh_driver.o eeh_event.o eeh_sysfs.o
 obj-$(CONFIG_KEXEC)	+= kexec.o
 obj-$(CONFIG_PCI)	+= pci.o pci_dlpar.o
-obj-$(CONFIG_PCI_MSI)	+= msi.o
+obj-$(CONFIG_PSERIES_MSI)	+= msi.o
 
 obj-$(CONFIG_HOTPLUG_CPU)	+= hotplug-cpu.o
 obj-$(CONFIG_MEMORY_HOTPLUG)	+= hotplug-memory.o
-- 
cgit v1.2.3


From 47c3c6ef955aabdccce294eb61c3294c8083478f Mon Sep 17 00:00:00 2001
From: Michael Ellerman <michael@ellerman.id.au>
Date: Thu, 5 Mar 2009 17:37:11 +0000
Subject: powerpc/cell: Fix Axon MSI driver dependencies

The Axon MSI driver depends on more than just PCI_MSI, so add a
Kconfig fragment for it. Fixes randconfig build failures.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/cell/Kconfig  | 5 +++++
 arch/powerpc/platforms/cell/Makefile | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/cell/Kconfig b/arch/powerpc/platforms/cell/Kconfig
index 037f59a4bfe..17b9b193557 100644
--- a/arch/powerpc/platforms/cell/Kconfig
+++ b/arch/powerpc/platforms/cell/Kconfig
@@ -43,6 +43,11 @@ config PPC_CELL_QPACE
 	depends on PPC_MULTIPLATFORM && PPC64
 	select PPC_CELL_COMMON
 
+config AXON_MSI
+	bool
+	depends on PPC_IBM_CELL_BLADE && PCI_MSI
+	default y
+
 menu "Cell Broadband Engine options"
 	depends on PPC_CELL
 
diff --git a/arch/powerpc/platforms/cell/Makefile b/arch/powerpc/platforms/cell/Makefile
index 43eccb27030..83fafe92264 100644
--- a/arch/powerpc/platforms/cell/Makefile
+++ b/arch/powerpc/platforms/cell/Makefile
@@ -28,7 +28,7 @@ obj-$(CONFIG_SPU_BASE)			+= spu_callbacks.o spu_base.o \
 					   $(spu-manage-y) \
 					   spufs/
 
-obj-$(CONFIG_PCI_MSI)			+= axon_msi.o
+obj-$(CONFIG_AXON_MSI)			+= axon_msi.o
 
 # qpace setup
 obj-$(CONFIG_PPC_CELL_QPACE)		+= qpace_setup.o
-- 
cgit v1.2.3


From 97f7d6bcc10687ff79632da338646a266dd590fc Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 10 Mar 2009 14:45:54 +0000
Subject: powerpc/irq: Convert obsolete irq_desc_t to struct irq_desc

Impact: cleanup

Convert the last remaining users.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: linuxppc-dev@ozlabs.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/iseries/irq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/iseries/irq.c b/arch/powerpc/platforms/iseries/irq.c
index 701d9297c20..94f44475883 100644
--- a/arch/powerpc/platforms/iseries/irq.c
+++ b/arch/powerpc/platforms/iseries/irq.c
@@ -214,7 +214,7 @@ void __init iSeries_activate_IRQs()
 	unsigned long flags;
 
 	for_each_irq (irq) {
-		irq_desc_t *desc = get_irq_desc(irq);
+		struct irq_desc *desc = get_irq_desc(irq);
 
 		if (desc && desc->chip && desc->chip->startup) {
 			spin_lock_irqsave(&desc->lock, flags);
-- 
cgit v1.2.3


From 353bca5ed4e0705ed4a1ac7b82491b223c3b55ba Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 10 Mar 2009 14:46:30 +0000
Subject: powerpc/irq: Convert obsolete hw_interrupt_type to struct irq_chip

Impact: cleanup

Convert the last remaining users to struct irq_chip.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: linuxppc-dev@ozlabs.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/powermac/pic.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/powermac/pic.h b/arch/powerpc/platforms/powermac/pic.h
index c44c89f5e53..d622a8345aa 100644
--- a/arch/powerpc/platforms/powermac/pic.h
+++ b/arch/powerpc/platforms/powermac/pic.h
@@ -3,7 +3,7 @@
 
 #include <linux/irq.h>
 
-extern struct hw_interrupt_type pmac_pic;
+extern struct irq_chip pmac_pic;
 
 extern void pmac_pic_init(void);
 extern int pmac_get_irq(void);
-- 
cgit v1.2.3


From 28794d34ecb6815a3fa0a4256027c9b081a17c5f Mon Sep 17 00:00:00 2001
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Tue, 10 Mar 2009 17:53:27 +0000
Subject: powerpc/kconfig: Kill PPC_MULTIPLATFORM

CONFIG_PPC_MULTIPLATFORM is a remain of the pre-powerpc days and isn't
really meaningful anymore. It was basically equivalent to PPC64 || 6xx.

This removes it along with the following changes:

 - 32-bit platforms that relied on PPC32 && PPC_MULTIPLATFORM now rely
   on 6xx which is what they want anyway.

 - A new symbol, PPC_BOOK3S, is defined that represent compliance with
   the "Server" variant of the architecture. This is set when either 6xx
   or PPC64 is set and open the door for future BOOK3E 64-bit.

 - 64-bit platforms that relied on PPC64 && PPC_MULTIPLATFORM now use
   PPC64 && PPC_BOOK3S

 - A separate and selectable CONFIG_PPC_OF_BOOT_TRAMPOLINE option is now
   used to control the use of prom_init.c

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/512x/Kconfig        |  4 ++--
 arch/powerpc/platforms/52xx/Kconfig        |  2 +-
 arch/powerpc/platforms/82xx/Kconfig        |  2 +-
 arch/powerpc/platforms/83xx/Kconfig        |  2 +-
 arch/powerpc/platforms/86xx/Kconfig        |  2 +-
 arch/powerpc/platforms/Kconfig             | 27 +++++++++++++++------------
 arch/powerpc/platforms/Kconfig.cputype     | 18 +++++++++++++-----
 arch/powerpc/platforms/amigaone/Kconfig    |  2 +-
 arch/powerpc/platforms/cell/Kconfig        |  6 +++---
 arch/powerpc/platforms/chrp/Kconfig        |  2 +-
 arch/powerpc/platforms/embedded6xx/Kconfig |  2 +-
 arch/powerpc/platforms/iseries/Kconfig     |  2 +-
 arch/powerpc/platforms/maple/Kconfig       |  2 +-
 arch/powerpc/platforms/pasemi/Kconfig      |  2 +-
 arch/powerpc/platforms/powermac/Kconfig    |  2 +-
 arch/powerpc/platforms/prep/Kconfig        |  2 +-
 arch/powerpc/platforms/ps3/Kconfig         |  2 +-
 arch/powerpc/platforms/pseries/Kconfig     |  2 +-
 18 files changed, 47 insertions(+), 36 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/512x/Kconfig b/arch/powerpc/platforms/512x/Kconfig
index 326852c78b8..4dac9b0525a 100644
--- a/arch/powerpc/platforms/512x/Kconfig
+++ b/arch/powerpc/platforms/512x/Kconfig
@@ -12,7 +12,7 @@ config PPC_MPC5121
 
 config MPC5121_ADS
 	bool "Freescale MPC5121E ADS"
-	depends on PPC_MULTIPLATFORM && PPC32
+	depends on 6xx
 	select DEFAULT_UIMAGE
 	select PPC_MPC5121
 	select MPC5121_ADS_CPLD
@@ -21,7 +21,7 @@ config MPC5121_ADS
 
 config MPC5121_GENERIC
 	bool "Generic support for simple MPC5121 based boards"
-	depends on PPC_MULTIPLATFORM && PPC32
+	depends on 6xx
 	select DEFAULT_UIMAGE
 	select PPC_MPC5121
 	help
diff --git a/arch/powerpc/platforms/52xx/Kconfig b/arch/powerpc/platforms/52xx/Kconfig
index 0465e5b36e6..e0b9454ae69 100644
--- a/arch/powerpc/platforms/52xx/Kconfig
+++ b/arch/powerpc/platforms/52xx/Kconfig
@@ -1,6 +1,6 @@
 config PPC_MPC52xx
 	bool "52xx-based boards"
-	depends on PPC_MULTIPLATFORM && PPC32
+	depends on 6xx
 	select PPC_CLOCK
 	select PPC_PCI_CHOICE
 
diff --git a/arch/powerpc/platforms/82xx/Kconfig b/arch/powerpc/platforms/82xx/Kconfig
index 30f008b2f92..7c7df400382 100644
--- a/arch/powerpc/platforms/82xx/Kconfig
+++ b/arch/powerpc/platforms/82xx/Kconfig
@@ -1,6 +1,6 @@
 menuconfig PPC_82xx
 	bool "82xx-based boards (PQ II)"
-	depends on 6xx && PPC_MULTIPLATFORM
+	depends on 6xx
 
 if PPC_82xx
 
diff --git a/arch/powerpc/platforms/83xx/Kconfig b/arch/powerpc/platforms/83xx/Kconfig
index 83c664afc89..437d29a59d7 100644
--- a/arch/powerpc/platforms/83xx/Kconfig
+++ b/arch/powerpc/platforms/83xx/Kconfig
@@ -1,6 +1,6 @@
 menuconfig PPC_83xx
 	bool "83xx-based boards"
-	depends on 6xx && PPC_MULTIPLATFORM
+	depends on 6xx
 	select PPC_UDBG_16550
 	select PPC_PCI_CHOICE
 	select FSL_PCI if PCI
diff --git a/arch/powerpc/platforms/86xx/Kconfig b/arch/powerpc/platforms/86xx/Kconfig
index fa276c689cf..34927845073 100644
--- a/arch/powerpc/platforms/86xx/Kconfig
+++ b/arch/powerpc/platforms/86xx/Kconfig
@@ -1,7 +1,7 @@
 config PPC_86xx
 menuconfig PPC_86xx
 	bool "86xx-based boards"
-	depends on 6xx && PPC_MULTIPLATFORM
+	depends on 6xx
 	select FSL_SOC
 	select ALTIVEC
 	help
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index b4ab3728653..68b9b8fd9f8 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -1,14 +1,5 @@
 menu "Platform support"
 
-config PPC_MULTIPLATFORM
-	bool
-	depends on PPC64 || 6xx
-	default y
-
-config CLASSIC32
-	def_bool y
-	depends on 6xx && PPC_MULTIPLATFORM
-
 source "arch/powerpc/platforms/pseries/Kconfig"
 source "arch/powerpc/platforms/iseries/Kconfig"
 source "arch/powerpc/platforms/chrp/Kconfig"
@@ -32,12 +23,24 @@ source "arch/powerpc/platforms/amigaone/Kconfig"
 
 config PPC_NATIVE
 	bool
-	depends on PPC_MULTIPLATFORM
+	depends on 6xx || PPC64
 	help
 	  Support for running natively on the hardware, i.e. without
 	  a hypervisor. This option is not user-selectable but should
 	  be selected by all platforms that need it.
 
+config PPC_OF_BOOT_TRAMPOLINE
+	bool "Support booting from Open Firmware or yaboot"
+	depends on 6xx || PPC64
+	default y
+	help
+	  Support from booting from Open Firmware or yaboot using an
+	  Open Firmware client interface. This enables the kernel to
+	  communicate with open firmware to retrieve system informations
+	  such as the device tree.
+
+	  In case of doubt, say Y
+
 config UDBG_RTAS_CONSOLE
 	bool "RTAS based debug console"
 	depends on PPC_RTAS
@@ -71,7 +74,7 @@ config PPC_I8259
 
 config U3_DART
 	bool
-	depends on PPC_MULTIPLATFORM && PPC64
+	depends on PPC64
 	default n
 
 config PPC_RTAS
@@ -188,7 +191,7 @@ config PPC601_SYNC_FIX
 
 config TAU
 	bool "On-chip CPU temperature sensor support"
-	depends on CLASSIC32
+	depends on 6xx
 	help
 	  G3 and G4 processors have an on-chip temperature sensor called the
 	  'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 9428c0e11b2..9da795e4933 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -57,9 +57,17 @@ config E200
 
 endchoice
 
+# Until we have a choice of exclusive CPU types on 64-bit, we always
+# use PPC_BOOK3S. On 32-bit, this is equivalent to 6xx which is
+# "classic" MMU
+
+config PPC_BOOK3S
+       def_bool y
+       depends on PPC64 || 6xx
+
 config POWER4_ONLY
 	bool "Optimize for POWER4"
-	depends on PPC64
+	depends on PPC64 && PPC_BOOK3S
 	default n
 	---help---
 	  Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
@@ -68,16 +76,16 @@ config POWER4_ONLY
 
 config POWER3
 	bool
-	depends on PPC64
+	depends on PPC64 && PPC_BOOK3S
 	default y if !POWER4_ONLY
 
 config POWER4
-	depends on PPC64
+	depends on PPC64 && PPC_BOOK3S
 	def_bool y
 
 config TUNE_CELL
 	bool "Optimize for Cell Broadband Engine"
-	depends on PPC64
+	depends on PPC64 && PPC_BOOK3S
 	help
 	  Cause the compiler to optimize for the PPE of the Cell Broadband
 	  Engine. This will make the code run considerably faster on Cell
@@ -147,7 +155,7 @@ config PHYS_64BIT
 
 config ALTIVEC
 	bool "AltiVec Support"
-	depends on CLASSIC32 || POWER4
+	depends on 6xx || POWER4
 	---help---
 	  This option enables kernel support for the Altivec extensions to the
 	  PowerPC processor. The kernel currently supports saving and restoring
diff --git a/arch/powerpc/platforms/amigaone/Kconfig b/arch/powerpc/platforms/amigaone/Kconfig
index 9276a96cede..02247671771 100644
--- a/arch/powerpc/platforms/amigaone/Kconfig
+++ b/arch/powerpc/platforms/amigaone/Kconfig
@@ -1,6 +1,6 @@
 config AMIGAONE
 	bool "Eyetech AmigaOne/MAI Teron"
-	depends on PPC32 && BROKEN_ON_SMP && PPC_MULTIPLATFORM
+	depends on 6xx && BROKEN_ON_SMP
 	select PPC_I8259
 	select PPC_INDIRECT_PCI
 	select PPC_UDBG_16550
diff --git a/arch/powerpc/platforms/cell/Kconfig b/arch/powerpc/platforms/cell/Kconfig
index 17b9b193557..40e24c39ad0 100644
--- a/arch/powerpc/platforms/cell/Kconfig
+++ b/arch/powerpc/platforms/cell/Kconfig
@@ -23,7 +23,7 @@ config PPC_CELL_NATIVE
 
 config PPC_IBM_CELL_BLADE
 	bool "IBM Cell Blade"
-	depends on PPC_MULTIPLATFORM && PPC64
+	depends on PPC64 && PPC_BOOK3S
 	select PPC_CELL_NATIVE
 	select MMIO_NVRAM
 	select PPC_UDBG_16550
@@ -31,7 +31,7 @@ config PPC_IBM_CELL_BLADE
 
 config PPC_CELLEB
 	bool "Toshiba's Cell Reference Set 'Celleb' Architecture"
-	depends on PPC_MULTIPLATFORM && PPC64
+	depends on PPC64 && PPC_BOOK3S
 	select PPC_CELL_NATIVE
 	select HAS_TXX9_SERIAL
 	select PPC_UDBG_BEAT
@@ -40,7 +40,7 @@ config PPC_CELLEB
 
 config PPC_CELL_QPACE
 	bool "IBM Cell - QPACE"
-	depends on PPC_MULTIPLATFORM && PPC64
+	depends on PPC64 && PPC_BOOK3S
 	select PPC_CELL_COMMON
 
 config AXON_MSI
diff --git a/arch/powerpc/platforms/chrp/Kconfig b/arch/powerpc/platforms/chrp/Kconfig
index 22b4b4e3b6f..37d438bd5b7 100644
--- a/arch/powerpc/platforms/chrp/Kconfig
+++ b/arch/powerpc/platforms/chrp/Kconfig
@@ -1,6 +1,6 @@
 config PPC_CHRP
 	bool "Common Hardware Reference Platform (CHRP) based machines"
-	depends on PPC_MULTIPLATFORM && PPC32
+	depends on 6xx
 	select MPIC
 	select PPC_I8259
 	select PPC_INDIRECT_PCI
diff --git a/arch/powerpc/platforms/embedded6xx/Kconfig b/arch/powerpc/platforms/embedded6xx/Kconfig
index 4f9f8184d16..291ac9d8cbe 100644
--- a/arch/powerpc/platforms/embedded6xx/Kconfig
+++ b/arch/powerpc/platforms/embedded6xx/Kconfig
@@ -1,6 +1,6 @@
 config EMBEDDED6xx
 	bool "Embedded 6xx/7xx/7xxx-based boards"
-	depends on PPC32 && BROKEN_ON_SMP && PPC_MULTIPLATFORM
+	depends on 6xx && BROKEN_ON_SMP
 
 config LINKSTATION
 	bool "Linkstation / Kurobox(HG) from Buffalo"
diff --git a/arch/powerpc/platforms/iseries/Kconfig b/arch/powerpc/platforms/iseries/Kconfig
index 7ddd0a2c802..647e8778743 100644
--- a/arch/powerpc/platforms/iseries/Kconfig
+++ b/arch/powerpc/platforms/iseries/Kconfig
@@ -1,6 +1,6 @@
 config PPC_ISERIES
 	bool "IBM Legacy iSeries"
-	depends on PPC_MULTIPLATFORM && PPC64
+	depends on PPC64 && PPC_BOOK3S
 	select PPC_INDIRECT_IO
 	select PPC_PCI_CHOICE if EMBEDDED
 
diff --git a/arch/powerpc/platforms/maple/Kconfig b/arch/powerpc/platforms/maple/Kconfig
index a6467a5591f..1ea621a94c3 100644
--- a/arch/powerpc/platforms/maple/Kconfig
+++ b/arch/powerpc/platforms/maple/Kconfig
@@ -1,5 +1,5 @@
 config PPC_MAPLE
-	depends on PPC_MULTIPLATFORM && PPC64
+	depends on PPC64 && PPC_BOOK3S
 	bool "Maple 970FX Evaluation Board"
 	select PCI
 	select MPIC
diff --git a/arch/powerpc/platforms/pasemi/Kconfig b/arch/powerpc/platforms/pasemi/Kconfig
index 348e0619e3e..a2aeb327d18 100644
--- a/arch/powerpc/platforms/pasemi/Kconfig
+++ b/arch/powerpc/platforms/pasemi/Kconfig
@@ -1,5 +1,5 @@
 config PPC_PASEMI
-	depends on PPC_MULTIPLATFORM && PPC64
+	depends on PPC64 && PPC_BOOK3S
 	bool "PA Semi SoC-based platforms"
 	default n
 	select MPIC
diff --git a/arch/powerpc/platforms/powermac/Kconfig b/arch/powerpc/platforms/powermac/Kconfig
index 055990ca8ce..1e1a0873e1d 100644
--- a/arch/powerpc/platforms/powermac/Kconfig
+++ b/arch/powerpc/platforms/powermac/Kconfig
@@ -1,6 +1,6 @@
 config PPC_PMAC
 	bool "Apple PowerMac based machines"
-	depends on PPC_MULTIPLATFORM
+	depends on PPC_BOOK3S
 	select MPIC
 	select PCI
 	select PPC_INDIRECT_PCI if PPC32
diff --git a/arch/powerpc/platforms/prep/Kconfig b/arch/powerpc/platforms/prep/Kconfig
index 29d411279b0..bf8330ef2e7 100644
--- a/arch/powerpc/platforms/prep/Kconfig
+++ b/arch/powerpc/platforms/prep/Kconfig
@@ -1,6 +1,6 @@
 config PPC_PREP
 	bool "PowerPC Reference Platform (PReP) based machines"
-	depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
+	depends on 6xx && BROKEN
 	select MPIC
 	select PPC_I8259
 	select PPC_INDIRECT_PCI
diff --git a/arch/powerpc/platforms/ps3/Kconfig b/arch/powerpc/platforms/ps3/Kconfig
index 920cf7a454b..204ae5c402f 100644
--- a/arch/powerpc/platforms/ps3/Kconfig
+++ b/arch/powerpc/platforms/ps3/Kconfig
@@ -1,6 +1,6 @@
 config PPC_PS3
 	bool "Sony PS3"
-	depends on PPC_MULTIPLATFORM && PPC64
+	depends on PPC64 && PPC_BOOK3S
 	select PPC_CELL
 	select USB_ARCH_HAS_OHCI
 	select USB_OHCI_LITTLE_ENDIAN
diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig
index 095ff6f846b..c0e6ec240f4 100644
--- a/arch/powerpc/platforms/pseries/Kconfig
+++ b/arch/powerpc/platforms/pseries/Kconfig
@@ -1,5 +1,5 @@
 config PPC_PSERIES
-	depends on PPC_MULTIPLATFORM && PPC64
+	depends on PPC64 && PPC_BOOK3S
 	bool "IBM pSeries & new (POWER5-based) iSeries"
 	select MPIC
 	select PPC_I8259
-- 
cgit v1.2.3


From 2b881b940a7b0cdf7c8258c9869458aa4e5f830c Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 10 Mar 2009 18:43:58 +0000
Subject: powerpc/85xx: remove setup_irq(NULL action) in ksi8560

setup_irq(0, NULL) is broken as setup_irq() dereferences action
unconditionally.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 arch/powerpc/platforms/85xx/ksi8560.c | 2 --
 1 file changed, 2 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/85xx/ksi8560.c b/arch/powerpc/platforms/85xx/ksi8560.c
index 81cee7bbf2d..66f29235ff0 100644
--- a/arch/powerpc/platforms/85xx/ksi8560.c
+++ b/arch/powerpc/platforms/85xx/ksi8560.c
@@ -106,8 +106,6 @@ static void __init ksi8560_pic_init(void)
 	cpm2_pic_init(np);
 	of_node_put(np);
 	set_irq_chained_handler(irq, cpm2_cascade);
-
-	setup_irq(0, NULL);
 #endif
 }
 
-- 
cgit v1.2.3


From 563fdd4a0af509d8cb78901750f7d00db345d864 Mon Sep 17 00:00:00 2001
From: Kumar Gala <galak@kernel.crashing.org>
Date: Wed, 11 Feb 2009 22:50:42 -0600
Subject: powerpc/85xx: Update smp support to handle doorbells and non-mpic
 init

Use device tree to determine if we actually have an MPIC and use
CPU feature to decide if we should use doorbells for IPIs.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 arch/powerpc/platforms/85xx/smp.c | 43 +++++++++++++++++++++++++++++++--------
 1 file changed, 35 insertions(+), 8 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c
index 79a0df17078..cc0b0db8a6f 100644
--- a/arch/powerpc/platforms/85xx/smp.c
+++ b/arch/powerpc/platforms/85xx/smp.c
@@ -21,6 +21,7 @@
 #include <asm/page.h>
 #include <asm/mpic.h>
 #include <asm/cacheflush.h>
+#include <asm/dbell.h>
 
 #include <sysdev/fsl_soc.h>
 
@@ -80,10 +81,8 @@ smp_85xx_kick_cpu(int nr)
 }
 
 static void __init
-smp_85xx_setup_cpu(int cpu_nr)
+smp_85xx_basic_setup(int cpu_nr)
 {
-	mpic_setup_this_cpu();
-
 	/* Clear any pending timer interrupts */
 	mtspr(SPRN_TSR, TSR_ENW | TSR_WIS | TSR_DIS | TSR_FIS);
 
@@ -91,15 +90,43 @@ smp_85xx_setup_cpu(int cpu_nr)
 	mtspr(SPRN_TCR, TCR_DIE);
 }
 
+static void __init
+smp_85xx_setup_cpu(int cpu_nr)
+{
+	mpic_setup_this_cpu();
+
+	smp_85xx_basic_setup(cpu_nr);
+}
+
 struct smp_ops_t smp_85xx_ops = {
-	.message_pass = smp_mpic_message_pass,
-	.probe = smp_mpic_probe,
 	.kick_cpu = smp_85xx_kick_cpu,
-	.setup_cpu = smp_85xx_setup_cpu,
 };
 
-void __init
-mpc85xx_smp_init(void)
+static int __init smp_dummy_probe(void)
 {
+	return NR_CPUS;
+}
+
+void __init mpc85xx_smp_init(void)
+{
+	struct device_node *np;
+
+	smp_85xx_ops.message_pass = NULL;
+
+	np = of_find_node_by_type(NULL, "open-pic");
+	if (np) {
+		smp_85xx_ops.probe = smp_mpic_probe;
+		smp_85xx_ops.setup_cpu = smp_85xx_setup_cpu;
+		smp_85xx_ops.message_pass = smp_mpic_message_pass;
+	} else {
+		smp_85xx_ops.probe = smp_dummy_probe;
+		smp_85xx_ops.setup_cpu = smp_85xx_basic_setup;
+	}
+
+	if (cpu_has_feature(CPU_FTR_DBELL))
+		smp_85xx_ops.message_pass = smp_dbell_message_pass;
+
+	BUG_ON(!smp_85xx_ops.message_pass);
+
 	smp_ops = &smp_85xx_ops;
 }
-- 
cgit v1.2.3


From bb899d49a5d04ae53c787c15c5fb82754d6a0da4 Mon Sep 17 00:00:00 2001
From: Grant Likely <grant.likely@secretlab.ca>
Date: Wed, 11 Mar 2009 09:36:26 -0600
Subject: powerpc/5200: remove sysfs debug file from GPT driver

Remove poorly designed debug sysfs attribute entry from the GPT driver.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
---
 arch/powerpc/platforms/52xx/mpc52xx_gpt.c | 39 -------------------------------
 1 file changed, 39 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
index cb038dc67a8..bfbcd418e69 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
@@ -335,44 +335,6 @@ static void
 mpc52xx_gpt_gpio_setup(struct mpc52xx_gpt_priv *p, struct device_node *np) { }
 #endif /* defined(CONFIG_GPIOLIB) */
 
-/***********************************************************************
- * SYSFS attributes
- */
-#if defined(CONFIG_SYSFS)
-static ssize_t mpc52xx_gpt_show_regs(struct device *dev,
-				     struct device_attribute *attr, char *buf)
-{
-	struct mpc52xx_gpt_priv *gpt = dev_get_drvdata(dev);
-	int i, len = 0;
-	u32 __iomem *regs = (void __iomem *) gpt->regs;
-
-	for (i = 0; i < 4; i++)
-		len += sprintf(buf + len, "%.8x ", in_be32(regs + i));
-	len += sprintf(buf + len, "\n");
-
-	return len;
-}
-
-static struct device_attribute mpc52xx_gpt_attrib[] = {
-	__ATTR(regs, S_IRUGO | S_IWUSR, mpc52xx_gpt_show_regs, NULL),
-};
-
-static void mpc52xx_gpt_create_attribs(struct mpc52xx_gpt_priv *gpt)
-{
-	int i, err = 0;
-
-	for (i = 0; i < ARRAY_SIZE(mpc52xx_gpt_attrib); i++) {
-		err = device_create_file(gpt->dev, &mpc52xx_gpt_attrib[i]);
-		if (err)
-			dev_err(gpt->dev, "error creating attribute %i\n", i);
-	}
-
-}
-
-#else /* defined(CONFIG_SYSFS) */
-static void mpc52xx_gpt_create_attribs(struct mpc52xx_gpt_priv *) { return 0; }
-#endif /* defined(CONFIG_SYSFS) */
-
 /* ---------------------------------------------------------------------
  * of_platform bus binding code
  */
@@ -395,7 +357,6 @@ static int __devinit mpc52xx_gpt_probe(struct of_device *ofdev,
 
 	dev_set_drvdata(&ofdev->dev, gpt);
 
-	mpc52xx_gpt_create_attribs(gpt);
 	mpc52xx_gpt_gpio_setup(gpt, ofdev->node);
 	mpc52xx_gpt_irq_setup(gpt, ofdev->node);
 
-- 
cgit v1.2.3


From df8a95f46f8e43a24003abe2efaca8c63c895b54 Mon Sep 17 00:00:00 2001
From: Wolfgang Grandegger <wg@grandegger.com>
Date: Wed, 11 Mar 2009 09:36:26 -0600
Subject: powerpc/5200: add function to return external clock frequency

This patch adds the utility function mpc52xx_get_xtal_freq() to get
the frequency of the external oscillator clock connected to the pin
SYS_XTAL_IN. The MSCAN may us it as clock source. Unfortunately, this
value is not available from the FDT blob, but it can be determined
from the IPB frequency.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---
 arch/powerpc/platforms/52xx/mpc52xx_common.c | 37 ++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/52xx/mpc52xx_common.c b/arch/powerpc/platforms/52xx/mpc52xx_common.c
index e9d2cf632ee..8e3dd5a0f22 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_common.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_common.c
@@ -205,6 +205,43 @@ int mpc52xx_set_psc_clkdiv(int psc_id, int clkdiv)
 }
 EXPORT_SYMBOL(mpc52xx_set_psc_clkdiv);
 
+/**
+ * mpc52xx_get_xtal_freq - Get SYS_XTAL_IN frequency for a device
+ *
+ * @node: device node
+ *
+ * Returns the frequency of the external oscillator clock connected
+ * to the SYS_XTAL_IN pin, or 0 if it cannot be determined.
+ */
+unsigned int mpc52xx_get_xtal_freq(struct device_node *node)
+{
+	u32 val;
+	unsigned int freq;
+
+	if (!mpc52xx_cdm)
+		return 0;
+
+	freq = mpc52xx_find_ipb_freq(node);
+	if (!freq)
+		return 0;
+
+	if (in_8(&mpc52xx_cdm->ipb_clk_sel) & 0x1)
+		freq *= 2;
+
+	val  = in_be32(&mpc52xx_cdm->rstcfg);
+	if (val & (1 << 5))
+		freq *= 8;
+	else
+		freq *= 4;
+	if (val & (1 << 6))
+		freq /= 12;
+	else
+		freq /= 16;
+
+	return freq;
+}
+EXPORT_SYMBOL(mpc52xx_get_xtal_freq);
+
 /**
  * mpc52xx_restart: ppc_md->restart hook for mpc5200 using the watchdog timer
  */
-- 
cgit v1.2.3


From 10b9dc6f6bd64885fcd6a005aa211582dbe92647 Mon Sep 17 00:00:00 2001
From: Wolfram Sang <w.sang@pengutronix.de>
Date: Wed, 11 Mar 2009 09:36:26 -0600
Subject: powerpc/5200: add Phytec phyCORE-MPC5200B-IO board (pcm032)

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---
 arch/powerpc/platforms/52xx/Kconfig          | 1 +
 arch/powerpc/platforms/52xx/mpc5200_simple.c | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/52xx/Kconfig b/arch/powerpc/platforms/52xx/Kconfig
index 0465e5b36e6..75f82ab0616 100644
--- a/arch/powerpc/platforms/52xx/Kconfig
+++ b/arch/powerpc/platforms/52xx/Kconfig
@@ -24,6 +24,7 @@ config PPC_MPC5200_SIMPLE
 	  are:
 	     intercontrol,digsy-mtc
 	     phytec,pcm030
+	     phytec,pcm032
 	     promess,motionpro
 	     schindler,cm5200
 	     tqc,tqm5200
diff --git a/arch/powerpc/platforms/52xx/mpc5200_simple.c b/arch/powerpc/platforms/52xx/mpc5200_simple.c
index d5e1471e51f..c31e5b534f0 100644
--- a/arch/powerpc/platforms/52xx/mpc5200_simple.c
+++ b/arch/powerpc/platforms/52xx/mpc5200_simple.c
@@ -51,8 +51,9 @@ static void __init mpc5200_simple_setup_arch(void)
 /* list of the supported boards */
 static char *board[] __initdata = {
 	"intercontrol,digsy-mtc",
-	"promess,motionpro",
 	"phytec,pcm030",
+	"phytec,pcm032",
+	"promess,motionpro",
 	"schindler,cm5200",
 	"tqc,tqm5200",
 	NULL
-- 
cgit v1.2.3


From 01ce8ef5e8abec5bda5ffdd9088dfa2b66c2a1dc Mon Sep 17 00:00:00 2001
From: Martyn Welch <martyn.welch@gefanuc.com>
Date: Fri, 13 Mar 2009 11:35:08 +0000
Subject: powerpc/86xx: Run sbc310 USB fixup code only on the appropriate
 platform.

Patch to limit NEC fixup to SBC310, following similar patch to SBC610 by
Tony Breeds: 368a12117dd8abf6eaefa37c21ac313b517128b9

Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 arch/powerpc/platforms/86xx/gef_sbc310.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/86xx/gef_sbc310.c b/arch/powerpc/platforms/86xx/gef_sbc310.c
index 0f20172af84..ba3ce438161 100644
--- a/arch/powerpc/platforms/86xx/gef_sbc310.c
+++ b/arch/powerpc/platforms/86xx/gef_sbc310.c
@@ -153,6 +153,10 @@ static void __init gef_sbc310_nec_fixup(struct pci_dev *pdev)
 {
 	unsigned int val;
 
+	/* Do not do the fixup on other platforms! */
+	if (!machine_is(gef_sbc310))
+		return;
+
 	printk(KERN_INFO "Running NEC uPD720101 Fixup\n");
 
 	/* Ensure only ports 1 & 2 are enabled */
-- 
cgit v1.2.3


From 740d36ae6344f38c4da64c2ede765d7d2dd1f132 Mon Sep 17 00:00:00 2001
From: Martyn Welch <martyn.welch@gefanuc.com>
Date: Thu, 19 Mar 2009 08:54:08 +0000
Subject: powerpc/86xx: Board support for GE Fanuc's PPC9A

Support for the PPC9A VME Single Board Computer from GE Fanuc (PowerPC
MPC8641D).

This is the basic board support for GE Fanuc's PPC9A, a 6U single board
computer, based on Freescale's MPC8641D.

Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 arch/powerpc/platforms/86xx/Kconfig     |  10 +-
 arch/powerpc/platforms/86xx/Makefile    |   1 +
 arch/powerpc/platforms/86xx/gef_ppc9a.c | 223 ++++++++++++++++++++++++++++++++
 3 files changed, 233 insertions(+), 1 deletion(-)
 create mode 100644 arch/powerpc/platforms/86xx/gef_ppc9a.c

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/86xx/Kconfig b/arch/powerpc/platforms/86xx/Kconfig
index fa276c689cf..611d0d19eb5 100644
--- a/arch/powerpc/platforms/86xx/Kconfig
+++ b/arch/powerpc/platforms/86xx/Kconfig
@@ -31,6 +31,14 @@ config MPC8610_HPCD
 	help
 	  This option enables support for the MPC8610 HPCD board.
 
+config GEF_PPC9A
+	bool "GE Fanuc PPC9A"
+	select DEFAULT_UIMAGE
+	select GENERIC_GPIO
+	select ARCH_REQUIRE_GPIOLIB
+	help
+	  This option enables support for GE Fanuc's PPC9A.
+
 config GEF_SBC310
 	bool "GE Fanuc SBC310"
 	select DEFAULT_UIMAGE
@@ -56,7 +64,7 @@ config MPC8641
 	select FSL_PCI if PCI
 	select PPC_UDBG_16550
 	select MPIC
-	default y if MPC8641_HPCN || SBC8641D || GEF_SBC610 || GEF_SBC310
+	default y if MPC8641_HPCN || SBC8641D || GEF_SBC610 || GEF_SBC310 || GEF_PPC9A
 
 config MPC8610
 	bool
diff --git a/arch/powerpc/platforms/86xx/Makefile b/arch/powerpc/platforms/86xx/Makefile
index 7c080da4523..4b0d7b1aa00 100644
--- a/arch/powerpc/platforms/86xx/Makefile
+++ b/arch/powerpc/platforms/86xx/Makefile
@@ -10,3 +10,4 @@ obj-$(CONFIG_MPC8610_HPCD)	+= mpc8610_hpcd.o
 gef-gpio-$(CONFIG_GPIOLIB)	+= gef_gpio.o
 obj-$(CONFIG_GEF_SBC610)	+= gef_sbc610.o gef_pic.o $(gef-gpio-y)
 obj-$(CONFIG_GEF_SBC310)	+= gef_sbc310.o gef_pic.o $(gef-gpio-y)
+obj-$(CONFIG_GEF_PPC9A)		+= gef_ppc9a.o gef_pic.o $(gef-gpio-y)
diff --git a/arch/powerpc/platforms/86xx/gef_ppc9a.c b/arch/powerpc/platforms/86xx/gef_ppc9a.c
new file mode 100644
index 00000000000..830fd9a23b5
--- /dev/null
+++ b/arch/powerpc/platforms/86xx/gef_ppc9a.c
@@ -0,0 +1,223 @@
+/*
+ * GE Fanuc PPC9A board support
+ *
+ * Author: Martyn Welch <martyn.welch@gefanuc.com>
+ *
+ * Copyright 2008 GE Fanuc Intelligent Platforms Embedded Systems, Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ *
+ * Based on: mpc86xx_hpcn.c (MPC86xx HPCN board specific routines)
+ * Copyright 2006 Freescale Semiconductor Inc.
+ *
+ * NEC fixup adapted from arch/mips/pci/fixup-lm2e.c
+ */
+
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/delay.h>
+#include <linux/seq_file.h>
+#include <linux/of_platform.h>
+
+#include <asm/system.h>
+#include <asm/time.h>
+#include <asm/machdep.h>
+#include <asm/pci-bridge.h>
+#include <asm/mpc86xx.h>
+#include <asm/prom.h>
+#include <mm/mmu_decl.h>
+#include <asm/udbg.h>
+
+#include <asm/mpic.h>
+
+#include <sysdev/fsl_pci.h>
+#include <sysdev/fsl_soc.h>
+
+#include "mpc86xx.h"
+#include "gef_pic.h"
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG (fmt...) do { printk(KERN_ERR "PPC9A: " fmt); } while (0)
+#else
+#define DBG (fmt...) do { } while (0)
+#endif
+
+void __iomem *ppc9a_regs;
+
+static void __init gef_ppc9a_init_irq(void)
+{
+	struct device_node *cascade_node = NULL;
+
+	mpc86xx_init_irq();
+
+	/*
+	 * There is a simple interrupt handler in the main FPGA, this needs
+	 * to be cascaded into the MPIC
+	 */
+	cascade_node = of_find_compatible_node(NULL, NULL, "gef,fpga-pic-1.00");
+	if (!cascade_node) {
+		printk(KERN_WARNING "PPC9A: No FPGA PIC\n");
+		return;
+	}
+
+	gef_pic_init(cascade_node);
+	of_node_put(cascade_node);
+}
+
+static void __init gef_ppc9a_setup_arch(void)
+{
+	struct device_node *regs;
+#ifdef CONFIG_PCI
+	struct device_node *np;
+
+	for_each_compatible_node(np, "pci", "fsl,mpc8641-pcie") {
+		fsl_add_bridge(np, 1);
+	}
+#endif
+
+	printk(KERN_INFO "GE Fanuc Intelligent Platforms PPC9A 6U VME SBC\n");
+
+#ifdef CONFIG_SMP
+	mpc86xx_smp_init();
+#endif
+
+	/* Remap basic board registers */
+	regs = of_find_compatible_node(NULL, NULL, "gef,ppc9a-fpga-regs");
+	if (regs) {
+		ppc9a_regs = of_iomap(regs, 0);
+		if (ppc9a_regs == NULL)
+			printk(KERN_WARNING "Unable to map board registers\n");
+		of_node_put(regs);
+	}
+}
+
+/* Return the PCB revision */
+static unsigned int gef_ppc9a_get_pcb_rev(void)
+{
+	unsigned int reg;
+
+	reg = ioread32(ppc9a_regs);
+	return (reg >> 8) & 0xff;
+}
+
+/* Return the board (software) revision */
+static unsigned int gef_ppc9a_get_board_rev(void)
+{
+	unsigned int reg;
+
+	reg = ioread32(ppc9a_regs);
+	return (reg >> 16) & 0xff;
+}
+
+/* Return the FPGA revision */
+static unsigned int gef_ppc9a_get_fpga_rev(void)
+{
+	unsigned int reg;
+
+	reg = ioread32(ppc9a_regs);
+	return (reg >> 24) & 0xf;
+}
+
+static void gef_ppc9a_show_cpuinfo(struct seq_file *m)
+{
+	uint svid = mfspr(SPRN_SVR);
+
+	seq_printf(m, "Vendor\t\t: GE Fanuc Intelligent Platforms\n");
+
+	seq_printf(m, "Revision\t: %u%c\n", gef_ppc9a_get_pcb_rev(),
+		('A' + gef_ppc9a_get_board_rev() - 1));
+	seq_printf(m, "FPGA Revision\t: %u\n", gef_ppc9a_get_fpga_rev());
+
+	seq_printf(m, "SVR\t\t: 0x%x\n", svid);
+}
+
+static void __init gef_ppc9a_nec_fixup(struct pci_dev *pdev)
+{
+	unsigned int val;
+
+	/* Do not do the fixup on other platforms! */
+	if (!machine_is(gef_ppc9a))
+		return;
+
+	printk(KERN_INFO "Running NEC uPD720101 Fixup\n");
+
+	/* Ensure ports 1, 2, 3, 4 & 5 are enabled */
+	pci_read_config_dword(pdev, 0xe0, &val);
+	pci_write_config_dword(pdev, 0xe0, (val & ~7) | 0x5);
+
+	/* System clock is 48-MHz Oscillator and EHCI Enabled. */
+	pci_write_config_dword(pdev, 0xe4, 1 << 5);
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB,
+	gef_ppc9a_nec_fixup);
+
+/*
+ * Called very early, device-tree isn't unflattened
+ *
+ * This function is called to determine whether the BSP is compatible with the
+ * supplied device-tree, which is assumed to be the correct one for the actual
+ * board. It is expected thati, in the future, a kernel may support multiple
+ * boards.
+ */
+static int __init gef_ppc9a_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	if (of_flat_dt_is_compatible(root, "gef,ppc9a"))
+		return 1;
+
+	return 0;
+}
+
+static long __init mpc86xx_time_init(void)
+{
+	unsigned int temp;
+
+	/* Set the time base to zero */
+	mtspr(SPRN_TBWL, 0);
+	mtspr(SPRN_TBWU, 0);
+
+	temp = mfspr(SPRN_HID0);
+	temp |= HID0_TBEN;
+	mtspr(SPRN_HID0, temp);
+	asm volatile("isync");
+
+	return 0;
+}
+
+static __initdata struct of_device_id of_bus_ids[] = {
+	{ .compatible = "simple-bus", },
+	{},
+};
+
+static int __init declare_of_platform_devices(void)
+{
+	printk(KERN_DEBUG "Probe platform devices\n");
+	of_platform_bus_probe(NULL, of_bus_ids, NULL);
+
+	return 0;
+}
+machine_device_initcall(gef_ppc9a, declare_of_platform_devices);
+
+define_machine(gef_ppc9a) {
+	.name			= "GE Fanuc PPC9A",
+	.probe			= gef_ppc9a_probe,
+	.setup_arch		= gef_ppc9a_setup_arch,
+	.init_IRQ		= gef_ppc9a_init_irq,
+	.show_cpuinfo		= gef_ppc9a_show_cpuinfo,
+	.get_irq		= mpic_get_irq,
+	.restart		= fsl_rstcr_restart,
+	.time_init		= mpc86xx_time_init,
+	.calibrate_decr		= generic_calibrate_decr,
+	.progress		= udbg_progress,
+#ifdef CONFIG_PCI
+	.pcibios_fixup_bus	= fsl_pcibios_fixup_bus,
+#endif
+};
-- 
cgit v1.2.3


From c5785f9e1c1c07c791fdc471f5c7fda4a5855b0c Mon Sep 17 00:00:00 2001
From: Nathan Fontenot <nfont@austin.ibm.com>
Date: Mon, 9 Mar 2009 00:00:00 +0000
Subject: powerpc/pseries: Failed reconfig notifier chain call cleanup

The return code from invoking the notifier chain when updating the
ibm,dynamic-memory property is not handled properly. In failure
cases (rc == NOTIFY_BAD) we should be restoring the original value
of the property.  In success (rc == NOTIFY_OK) we should be returning
zero from the calling routine.

Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/pseries/reconfig.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c
index c591a25b0b0..b6f1b137d42 100644
--- a/arch/powerpc/platforms/pseries/reconfig.c
+++ b/arch/powerpc/platforms/pseries/reconfig.c
@@ -468,9 +468,13 @@ static int do_update_property(char *buf, size_t bufsize)
 
 		rc = blocking_notifier_call_chain(&pSeries_reconfig_chain,
 						  action, value);
+		if (rc == NOTIFY_BAD) {
+			rc = prom_update_property(np, oldprop, newprop);
+			return -ENOMEM;
+		}
 	}
 
-	return rc;
+	return 0;
 }
 
 /**
-- 
cgit v1.2.3


From fc59a3fc8eed3a2c811e64ec65015d7eb1459ace Mon Sep 17 00:00:00 2001
From: Jeremy Kerr <jk@ozlabs.org>
Date: Wed, 11 Mar 2009 17:55:52 +0000
Subject: powerpc: Add virtual processor dispatch trace log

pseries SPLPAR machines are able to retrieve a log of dispatch and
preempt events from the hypervisor. With this information, we can
see when and why each dispatch & preempt is occuring.

This change adds a set of debugfs files allowing userspace to read this
dispatch log.

Based on initial patches from Nishanth Aravamudan <nacc@us.ibm.com>.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/pseries/Kconfig          |  10 +
 arch/powerpc/platforms/pseries/Makefile         |   1 +
 arch/powerpc/platforms/pseries/dtl.c            | 274 ++++++++++++++++++++++++
 arch/powerpc/platforms/pseries/plpar_wrappers.h |  10 +
 4 files changed, 295 insertions(+)
 create mode 100644 arch/powerpc/platforms/pseries/dtl.c

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig
index c0e6ec240f4..f0e6f28427b 100644
--- a/arch/powerpc/platforms/pseries/Kconfig
+++ b/arch/powerpc/platforms/pseries/Kconfig
@@ -68,3 +68,13 @@ config CMM
 	  makes sense for a system running in an LPAR where the unused pages
 	  will be reused for other LPARs. The interface allows firmware to
 	  balance memory across many LPARs.
+
+config DTL
+	bool "Dispatch Trace Log"
+	depends on PPC_SPLPAR && DEBUG_FS
+	help
+	  SPLPAR machines can log hypervisor preempt & dispatch events to a
+	  kernel buffer. Saying Y here will enable logging these events,
+	  which are accessible through a debugfs file.
+
+	  Say N if you are unsure.
diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile
index 0ce691df595..790c0b872d4 100644
--- a/arch/powerpc/platforms/pseries/Makefile
+++ b/arch/powerpc/platforms/pseries/Makefile
@@ -25,3 +25,4 @@ obj-$(CONFIG_HVCS)		+= hvcserver.o
 obj-$(CONFIG_HCALL_STATS)	+= hvCall_inst.o
 obj-$(CONFIG_PHYP_DUMP)	+= phyp_dump.o
 obj-$(CONFIG_CMM)		+= cmm.o
+obj-$(CONFIG_DTL)		+= dtl.o
diff --git a/arch/powerpc/platforms/pseries/dtl.c b/arch/powerpc/platforms/pseries/dtl.c
new file mode 100644
index 00000000000..dc9b0f81e60
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/dtl.c
@@ -0,0 +1,274 @@
+/*
+ * Virtual Processor Dispatch Trace Log
+ *
+ * (C) Copyright IBM Corporation 2009
+ *
+ * Author: Jeremy Kerr <jk@ozlabs.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/debugfs.h>
+#include <asm/smp.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+
+#include "plpar_wrappers.h"
+
+/*
+ * Layout of entries in the hypervisor's DTL buffer. Although we don't
+ * actually access the internals of an entry (we only need to know the size),
+ * we might as well define it here for reference.
+ */
+struct dtl_entry {
+	u8	dispatch_reason;
+	u8	preempt_reason;
+	u16	processor_id;
+	u32	enqueue_to_dispatch_time;
+	u32	ready_to_enqueue_time;
+	u32	waiting_to_ready_time;
+	u64	timebase;
+	u64	fault_addr;
+	u64	srr0;
+	u64	srr1;
+};
+
+struct dtl {
+	struct dtl_entry	*buf;
+	struct dentry		*file;
+	int			cpu;
+	int			buf_entries;
+	u64			last_idx;
+};
+static DEFINE_PER_CPU(struct dtl, dtl);
+
+/*
+ * Dispatch trace log event mask:
+ * 0x7: 0x1: voluntary virtual processor waits
+ *      0x2: time-slice preempts
+ *      0x4: virtual partition memory page faults
+ */
+static u8 dtl_event_mask = 0x7;
+
+
+/*
+ * Size of per-cpu log buffers. Default is just under 16 pages worth.
+ */
+static int dtl_buf_entries = (16 * 85);
+
+
+static int dtl_enable(struct dtl *dtl)
+{
+	unsigned long addr;
+	int ret, hwcpu;
+
+	/* only allow one reader */
+	if (dtl->buf)
+		return -EBUSY;
+
+	/* we need to store the original allocation size for use during read */
+	dtl->buf_entries = dtl_buf_entries;
+
+	dtl->buf = kmalloc_node(dtl->buf_entries * sizeof(struct dtl_entry),
+			GFP_KERNEL, cpu_to_node(dtl->cpu));
+	if (!dtl->buf) {
+		printk(KERN_WARNING "%s: buffer alloc failed for cpu %d\n",
+				__func__, dtl->cpu);
+		return -ENOMEM;
+	}
+
+	/* Register our dtl buffer with the hypervisor. The HV expects the
+	 * buffer size to be passed in the second word of the buffer */
+	((u32 *)dtl->buf)[1] = dtl->buf_entries * sizeof(struct dtl_entry);
+
+	hwcpu = get_hard_smp_processor_id(dtl->cpu);
+	addr = __pa(dtl->buf);
+	ret = register_dtl(hwcpu, addr);
+	if (ret) {
+		printk(KERN_WARNING "%s: DTL registration for cpu %d (hw %d) "
+		       "failed with %d\n", __func__, dtl->cpu, hwcpu, ret);
+		kfree(dtl->buf);
+		return -EIO;
+	}
+
+	/* set our initial buffer indices */
+	dtl->last_idx = lppaca[dtl->cpu].dtl_idx = 0;
+
+	/* enable event logging */
+	lppaca[dtl->cpu].dtl_enable_mask = dtl_event_mask;
+
+	return 0;
+}
+
+static void dtl_disable(struct dtl *dtl)
+{
+	int hwcpu = get_hard_smp_processor_id(dtl->cpu);
+
+	lppaca[dtl->cpu].dtl_enable_mask = 0x0;
+
+	unregister_dtl(hwcpu, __pa(dtl->buf));
+
+	kfree(dtl->buf);
+	dtl->buf = NULL;
+	dtl->buf_entries = 0;
+}
+
+/* file interface */
+
+static int dtl_file_open(struct inode *inode, struct file *filp)
+{
+	struct dtl *dtl = inode->i_private;
+	int rc;
+
+	rc = dtl_enable(dtl);
+	if (rc)
+		return rc;
+
+	filp->private_data = dtl;
+	return 0;
+}
+
+static int dtl_file_release(struct inode *inode, struct file *filp)
+{
+	struct dtl *dtl = inode->i_private;
+	dtl_disable(dtl);
+	return 0;
+}
+
+static ssize_t dtl_file_read(struct file *filp, char __user *buf, size_t len,
+		loff_t *pos)
+{
+	int rc, cur_idx, last_idx, n_read, n_req, read_size;
+	struct dtl *dtl;
+
+	if ((len % sizeof(struct dtl_entry)) != 0)
+		return -EINVAL;
+
+	dtl = filp->private_data;
+
+	/* requested number of entries to read */
+	n_req = len / sizeof(struct dtl_entry);
+
+	/* actual number of entries read */
+	n_read = 0;
+
+	cur_idx = lppaca[dtl->cpu].dtl_idx;
+	last_idx = dtl->last_idx;
+
+	if (cur_idx - last_idx > dtl->buf_entries) {
+		pr_debug("%s: hv buffer overflow for cpu %d, samples lost\n",
+				__func__, dtl->cpu);
+	}
+
+	cur_idx  %= dtl->buf_entries;
+	last_idx %= dtl->buf_entries;
+
+	/* read the tail of the buffer if we've wrapped */
+	if (last_idx > cur_idx) {
+		read_size = min(n_req, dtl->buf_entries - last_idx);
+
+		rc = copy_to_user(buf, &dtl->buf[last_idx],
+				read_size * sizeof(struct dtl_entry));
+		if (rc)
+			return -EFAULT;
+
+		last_idx = 0;
+		n_req -= read_size;
+		n_read += read_size;
+		buf += read_size * sizeof(struct dtl_entry);
+	}
+
+	/* .. and now the head */
+	read_size = min(n_req, cur_idx - last_idx);
+	rc = copy_to_user(buf, &dtl->buf[last_idx],
+			read_size * sizeof(struct dtl_entry));
+	if (rc)
+		return -EFAULT;
+
+	n_read += read_size;
+	dtl->last_idx += n_read;
+
+	return n_read * sizeof(struct dtl_entry);
+}
+
+static struct file_operations dtl_fops = {
+	.open		= dtl_file_open,
+	.release	= dtl_file_release,
+	.read		= dtl_file_read,
+	.llseek		= no_llseek,
+};
+
+static struct dentry *dtl_dir;
+
+static int dtl_setup_file(struct dtl *dtl)
+{
+	char name[10];
+
+	sprintf(name, "cpu-%d", dtl->cpu);
+
+	dtl->file = debugfs_create_file(name, 0400, dtl_dir, dtl, &dtl_fops);
+	if (!dtl->file)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static int dtl_init(void)
+{
+	struct dentry *event_mask_file, *buf_entries_file;
+	int rc, i;
+
+	if (!firmware_has_feature(FW_FEATURE_SPLPAR))
+		return -ENODEV;
+
+	/* set up common debugfs structure */
+
+	rc = -ENOMEM;
+	dtl_dir = debugfs_create_dir("dtl", powerpc_debugfs_root);
+	if (!dtl_dir) {
+		printk(KERN_WARNING "%s: can't create dtl root dir\n",
+				__func__);
+		goto err;
+	}
+
+	event_mask_file = debugfs_create_x8("dtl_event_mask", 0600,
+				dtl_dir, &dtl_event_mask);
+	buf_entries_file = debugfs_create_u32("dtl_buf_entries", 0600,
+				dtl_dir, &dtl_buf_entries);
+
+	if (!event_mask_file || !buf_entries_file) {
+		printk(KERN_WARNING "%s: can't create dtl files\n", __func__);
+		goto err_remove_dir;
+	}
+
+	/* set up the per-cpu log structures */
+	for_each_possible_cpu(i) {
+		struct dtl *dtl = &per_cpu(dtl, i);
+		dtl->cpu = i;
+
+		rc = dtl_setup_file(dtl);
+		if (rc)
+			goto err_remove_dir;
+	}
+
+	return 0;
+
+err_remove_dir:
+	debugfs_remove_recursive(dtl_dir);
+err:
+	return rc;
+}
+arch_initcall(dtl_init);
diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h
index d967c1893ab..a24a6b2333b 100644
--- a/arch/powerpc/platforms/pseries/plpar_wrappers.h
+++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h
@@ -43,6 +43,16 @@ static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa)
 	return vpa_call(0x3, cpu, vpa);
 }
 
+static inline long unregister_dtl(unsigned long cpu, unsigned long vpa)
+{
+	return vpa_call(0x6, cpu, vpa);
+}
+
+static inline long register_dtl(unsigned long cpu, unsigned long vpa)
+{
+	return vpa_call(0x2, cpu, vpa);
+}
+
 static inline long plpar_page_set_loaned(unsigned long vpa)
 {
 	unsigned long cmo_page_sz = cmo_get_page_size();
-- 
cgit v1.2.3


From ebf0f334ddafeea628e0e048af7f09c440cafb50 Mon Sep 17 00:00:00 2001
From: Michael Ellerman <michael@ellerman.id.au>
Date: Thu, 12 Mar 2009 02:16:27 +0000
Subject: powerpc/cell: Make axonram depends on BLOCK

Fix axonram driver dependency

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index 68b9b8fd9f8..ffa2a9fd53d 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -269,7 +269,7 @@ config CPM2
 
 config AXON_RAM
 	tristate "Axon DDR2 memory device driver"
-	depends on PPC_IBM_CELL_BLADE
+	depends on PPC_IBM_CELL_BLADE && BLOCK
 	default m
 	help
 	  It registers one block device per Axon's DDR2 memory bank found
-- 
cgit v1.2.3


From 56aa4129e87be43676c6e3eac41a6aa553877802 Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Sun, 15 Mar 2009 18:16:43 +0000
Subject: cpumask: Use mm_cpumask() wrapper instead of cpu_vm_mask

Makes code futureproof against the impending change to mm->cpu_vm_mask.

It's also a chance to use the new cpumask_ ops which take a pointer
(the older ones are deprecated, but there's no hurry for arch code).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/cell/spu_base.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index e487ad68ac1..9abd210d87c 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -114,7 +114,7 @@ static inline void mm_needs_global_tlbie(struct mm_struct *mm)
 	int nr = (NR_CPUS > 1) ? NR_CPUS : NR_CPUS + 1;
 
 	/* Global TLBIE broadcast required with SPEs. */
-	__cpus_setall(&mm->cpu_vm_mask, nr);
+	bitmap_fill(cpumask_bits(mm_cpumask(mm)), nr);
 }
 
 void spu_associate_mm(struct spu *spu, struct mm_struct *mm)
-- 
cgit v1.2.3


From d746286c1fcb186ce16295c30d48db852ede6772 Mon Sep 17 00:00:00 2001
From: Kumar Gala <galak@kernel.crashing.org>
Date: Thu, 19 Mar 2009 03:40:51 +0000
Subject: powerpc: setup default archdata for {of_}platform via
 bus_register_notifier

Since a number of powerpc chips are SoCs we end up having dma-able
devices that are registered as platform or of_platform devices.  We need
to hook the archdata to setup proper dma_ops for these devices.

Rather than having to add a bus_notify to each platform we add a default
one at the highest priority (called first) to set the default dma_ops for
of_platform and platform devices to dma_direct_ops.  This allows platform
code to override the ops by providing their own notifier call back.

In the future to enable >4G DMA support on ppc32 we can hook swiotlb ops.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/cell/qpace_setup.c | 13 -------------
 1 file changed, 13 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/cell/qpace_setup.c b/arch/powerpc/platforms/cell/qpace_setup.c
index c75b66278fa..c5ce02e84c8 100644
--- a/arch/powerpc/platforms/cell/qpace_setup.c
+++ b/arch/powerpc/platforms/cell/qpace_setup.c
@@ -81,16 +81,6 @@ static int __init qpace_publish_devices(void)
 }
 machine_subsys_initcall(qpace, qpace_publish_devices);
 
-extern int qpace_notify(struct device *dev)
-{
-	/* set dma_ops for of_platform bus */
-	if (dev->bus && dev->bus->name
-			&& !strcmp(dev->bus->name, "of_platform"))
-		set_dma_ops(dev, &dma_direct_ops);
-
-	return 0;
-}
-
 static void __init qpace_setup_arch(void)
 {
 #ifdef CONFIG_SPU_BASE
@@ -115,9 +105,6 @@ static void __init qpace_setup_arch(void)
 #ifdef CONFIG_DUMMY_CONSOLE
 	conswitchp = &dummy_con;
 #endif
-
-	/* set notifier function */
-	platform_notify = &qpace_notify;
 }
 
 static int __init qpace_probe(void)
-- 
cgit v1.2.3


From 2a7d55fda58eb4e3652252d4f71222bd1ff90c5e Mon Sep 17 00:00:00 2001
From: Jeremy Kerr <jk@ozlabs.org>
Date: Thu, 19 Mar 2009 16:46:35 +0000
Subject: powerpc/cell: Fix iommu exception reporting

Currently, we will report a page fault as a segment fault, and report
a segment fault as both a page and segment fault.

Fix the SPF_P definition to be correct according to the iommu docs, and
mask before comparing.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/cell/iommu.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
index ee5033eddf0..5744527a7f2 100644
--- a/arch/powerpc/platforms/cell/iommu.c
+++ b/arch/powerpc/platforms/cell/iommu.c
@@ -74,7 +74,7 @@
 #define IOC_IO_ExcpStat_V		0x8000000000000000ul
 #define IOC_IO_ExcpStat_SPF_Mask	0x6000000000000000ul
 #define IOC_IO_ExcpStat_SPF_S		0x6000000000000000ul
-#define IOC_IO_ExcpStat_SPF_P		0x4000000000000000ul
+#define IOC_IO_ExcpStat_SPF_P		0x2000000000000000ul
 #define IOC_IO_ExcpStat_ADDR_Mask	0x00000007fffff000ul
 #define IOC_IO_ExcpStat_RW_Mask		0x0000000000000800ul
 #define IOC_IO_ExcpStat_IOID_Mask	0x00000000000007fful
@@ -247,17 +247,18 @@ static void tce_free_cell(struct iommu_table *tbl, long index, long npages)
 
 static irqreturn_t ioc_interrupt(int irq, void *data)
 {
-	unsigned long stat;
+	unsigned long stat, spf;
 	struct cbe_iommu *iommu = data;
 
 	stat = in_be64(iommu->xlate_regs + IOC_IO_ExcpStat);
+	spf = stat & IOC_IO_ExcpStat_SPF_Mask;
 
 	/* Might want to rate limit it */
 	printk(KERN_ERR "iommu: DMA exception 0x%016lx\n", stat);
 	printk(KERN_ERR "  V=%d, SPF=[%c%c], RW=%s, IOID=0x%04x\n",
 	       !!(stat & IOC_IO_ExcpStat_V),
-	       (stat & IOC_IO_ExcpStat_SPF_S) ? 'S' : ' ',
-	       (stat & IOC_IO_ExcpStat_SPF_P) ? 'P' : ' ',
+	       (spf == IOC_IO_ExcpStat_SPF_S) ? 'S' : ' ',
+	       (spf == IOC_IO_ExcpStat_SPF_P) ? 'P' : ' ',
 	       (stat & IOC_IO_ExcpStat_RW_Mask) ? "Read" : "Write",
 	       (unsigned int)(stat & IOC_IO_ExcpStat_IOID_Mask));
 	printk(KERN_ERR "  page=0x%016lx\n",
-- 
cgit v1.2.3


From 70b3adbba056f5d9081f1ec9b4a629e3c7502072 Mon Sep 17 00:00:00 2001
From: Anton Vorontsov <avorontsov@ru.mvista.com>
Date: Thu, 19 Mar 2009 21:01:45 +0300
Subject: powerpc/83xx: Move gianfar mdio nodes under the ethernet nodes

Currently it doesn't matter where the mdio nodes are placed, but with
power management support (i.e. when sleep = <> properties will take
effect), mdio nodes placement will become important: mdio controller
is a part of the ethernet block, so the mdio nodes should be placed
correctly. Otherwise we may wrongly assume that MDIO controllers are
available during sleep.

Suggested-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 arch/powerpc/platforms/83xx/asp834x.c     | 1 +
 arch/powerpc/platforms/83xx/mpc834x_itx.c | 1 +
 arch/powerpc/platforms/83xx/mpc834x_mds.c | 1 +
 arch/powerpc/platforms/83xx/mpc837x_mds.c | 1 +
 arch/powerpc/platforms/83xx/mpc837x_rdb.c | 1 +
 arch/powerpc/platforms/83xx/sbc834x.c     | 1 +
 6 files changed, 6 insertions(+)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/83xx/asp834x.c b/arch/powerpc/platforms/83xx/asp834x.c
index bb30d67ad0a..aa0d84d2258 100644
--- a/arch/powerpc/platforms/83xx/asp834x.c
+++ b/arch/powerpc/platforms/83xx/asp834x.c
@@ -58,6 +58,7 @@ static struct __initdata of_device_id asp8347_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/83xx/mpc834x_itx.c b/arch/powerpc/platforms/83xx/mpc834x_itx.c
index 76092d37c7d..81e44fa1c64 100644
--- a/arch/powerpc/platforms/83xx/mpc834x_itx.c
+++ b/arch/powerpc/platforms/83xx/mpc834x_itx.c
@@ -42,6 +42,7 @@
 static struct of_device_id __initdata mpc834x_itx_ids[] = {
 	{ .compatible = "fsl,pq2pro-localbus", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/83xx/mpc834x_mds.c b/arch/powerpc/platforms/83xx/mpc834x_mds.c
index fc3f2ed1f3e..d0a634b056c 100644
--- a/arch/powerpc/platforms/83xx/mpc834x_mds.c
+++ b/arch/powerpc/platforms/83xx/mpc834x_mds.c
@@ -112,6 +112,7 @@ static struct of_device_id mpc834x_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/83xx/mpc837x_mds.c b/arch/powerpc/platforms/83xx/mpc837x_mds.c
index 634785cc452..51df7e75469 100644
--- a/arch/powerpc/platforms/83xx/mpc837x_mds.c
+++ b/arch/powerpc/platforms/83xx/mpc837x_mds.c
@@ -96,6 +96,7 @@ static struct of_device_id mpc837x_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/83xx/mpc837x_rdb.c b/arch/powerpc/platforms/83xx/mpc837x_rdb.c
index 3d7b953d40e..76f3b32a155 100644
--- a/arch/powerpc/platforms/83xx/mpc837x_rdb.c
+++ b/arch/powerpc/platforms/83xx/mpc837x_rdb.c
@@ -48,6 +48,7 @@ static struct of_device_id mpc837x_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/83xx/sbc834x.c b/arch/powerpc/platforms/83xx/sbc834x.c
index 156c4e21800..49023dbe157 100644
--- a/arch/powerpc/platforms/83xx/sbc834x.c
+++ b/arch/powerpc/platforms/83xx/sbc834x.c
@@ -84,6 +84,7 @@ static struct __initdata of_device_id sbc834x_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
-- 
cgit v1.2.3


From 84ba4a5899e613a396c5bea5feadba923534801b Mon Sep 17 00:00:00 2001
From: Anton Vorontsov <avorontsov@ru.mvista.com>
Date: Thu, 19 Mar 2009 21:01:48 +0300
Subject: powerpc/85xx: Move gianfar mdio nodes under the ethernet nodes

Currently it doesn't matter where the mdio nodes are placed, but with
power management support (i.e. when sleep = <> properties will take
effect), mdio nodes placement will become important: mdio controller
is a part of the ethernet block, so the mdio nodes should be placed
correctly. Otherwise we may wrongly assume that MDIO controllers are
available during sleep.

Suggested-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 arch/powerpc/platforms/85xx/ksi8560.c     | 1 +
 arch/powerpc/platforms/85xx/mpc8536_ds.c  | 1 +
 arch/powerpc/platforms/85xx/mpc85xx_ads.c | 1 +
 arch/powerpc/platforms/85xx/mpc85xx_cds.c | 1 +
 arch/powerpc/platforms/85xx/mpc85xx_ds.c  | 1 +
 arch/powerpc/platforms/85xx/mpc85xx_mds.c | 1 +
 arch/powerpc/platforms/85xx/sbc8548.c     | 1 +
 arch/powerpc/platforms/85xx/sbc8560.c     | 1 +
 arch/powerpc/platforms/85xx/stx_gp3.c     | 1 +
 arch/powerpc/platforms/85xx/tqm85xx.c     | 1 +
 10 files changed, 10 insertions(+)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/85xx/ksi8560.c b/arch/powerpc/platforms/85xx/ksi8560.c
index 66f29235ff0..f4d36b5a2e0 100644
--- a/arch/powerpc/platforms/85xx/ksi8560.c
+++ b/arch/powerpc/platforms/85xx/ksi8560.c
@@ -219,6 +219,7 @@ static struct of_device_id __initdata of_bus_ids[] = {
 	{ .type = "simple-bus", },
 	{ .name = "cpm", },
 	{ .name = "localbus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/85xx/mpc8536_ds.c b/arch/powerpc/platforms/85xx/mpc8536_ds.c
index 1bf5aefdfeb..63efca20d7b 100644
--- a/arch/powerpc/platforms/85xx/mpc8536_ds.c
+++ b/arch/powerpc/platforms/85xx/mpc8536_ds.c
@@ -92,6 +92,7 @@ static struct of_device_id __initdata mpc8536_ds_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ads.c b/arch/powerpc/platforms/85xx/mpc85xx_ads.c
index 21f009023e2..9438a892afc 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_ads.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_ads.c
@@ -226,6 +226,7 @@ static struct of_device_id __initdata of_bus_ids[] = {
 	{ .name = "cpm", },
 	{ .name = "localbus", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_cds.c b/arch/powerpc/platforms/85xx/mpc85xx_cds.c
index aeb6a5bc552..0a9e49104bd 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_cds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_cds.c
@@ -336,6 +336,7 @@ static struct of_device_id __initdata of_bus_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ds.c b/arch/powerpc/platforms/85xx/mpc85xx_ds.c
index 7326d904202..de66de7a9ca 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_ds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_ds.c
@@ -204,6 +204,7 @@ static struct of_device_id __initdata mpc85xxds_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c b/arch/powerpc/platforms/85xx/mpc85xx_mds.c
index 658a36fab3a..7dd029034ae 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c
@@ -265,6 +265,7 @@ static struct of_device_id mpc85xx_ids[] = {
 	{ .compatible = "simple-bus", },
 	{ .type = "qe", },
 	{ .compatible = "fsl,qe", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/85xx/sbc8548.c b/arch/powerpc/platforms/85xx/sbc8548.c
index 7ec77ce12da..ecdd8c09e4e 100644
--- a/arch/powerpc/platforms/85xx/sbc8548.c
+++ b/arch/powerpc/platforms/85xx/sbc8548.c
@@ -154,6 +154,7 @@ static struct of_device_id __initdata of_bus_ids[] = {
 	{ .name = "soc", },
 	{ .type = "soc", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/85xx/sbc8560.c b/arch/powerpc/platforms/85xx/sbc8560.c
index 472f254a19d..cc27807a8b6 100644
--- a/arch/powerpc/platforms/85xx/sbc8560.c
+++ b/arch/powerpc/platforms/85xx/sbc8560.c
@@ -213,6 +213,7 @@ static struct of_device_id __initdata of_bus_ids[] = {
 	{ .name = "cpm", },
 	{ .name = "localbus", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/85xx/stx_gp3.c b/arch/powerpc/platforms/85xx/stx_gp3.c
index 0cca8f5cb27..f559918f3c6 100644
--- a/arch/powerpc/platforms/85xx/stx_gp3.c
+++ b/arch/powerpc/platforms/85xx/stx_gp3.c
@@ -145,6 +145,7 @@ static void stx_gp3_show_cpuinfo(struct seq_file *m)
 
 static struct of_device_id __initdata of_bus_ids[] = {
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/85xx/tqm85xx.c b/arch/powerpc/platforms/85xx/tqm85xx.c
index 2933a8e827d..5b0ab9966e9 100644
--- a/arch/powerpc/platforms/85xx/tqm85xx.c
+++ b/arch/powerpc/platforms/85xx/tqm85xx.c
@@ -153,6 +153,7 @@ static void tqm85xx_show_cpuinfo(struct seq_file *m)
 
 static struct of_device_id __initdata of_bus_ids[] = {
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
-- 
cgit v1.2.3


From d8bc55fb334e1124b72684e2d0a2e599aab21ae4 Mon Sep 17 00:00:00 2001
From: Anton Vorontsov <avorontsov@ru.mvista.com>
Date: Thu, 19 Mar 2009 21:01:51 +0300
Subject: powerpc/86xx: Move gianfar mdio nodes under the ethernet nodes

Currently it doesn't matter where the mdio nodes are placed, but with
power management support (i.e. when sleep = <> properties will take
effect), mdio nodes placement will become important: mdio controller
is a part of the ethernet block, so the mdio nodes should be placed
correctly. Otherwise we may wrongly assume that MDIO controllers are
available during sleep.

Suggested-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 arch/powerpc/platforms/86xx/gef_ppc9a.c    | 1 +
 arch/powerpc/platforms/86xx/gef_sbc310.c   | 1 +
 arch/powerpc/platforms/86xx/gef_sbc610.c   | 1 +
 arch/powerpc/platforms/86xx/mpc8610_hpcd.c | 1 +
 arch/powerpc/platforms/86xx/mpc86xx_hpcn.c | 1 +
 arch/powerpc/platforms/86xx/sbc8641d.c     | 1 +
 6 files changed, 6 insertions(+)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/86xx/gef_ppc9a.c b/arch/powerpc/platforms/86xx/gef_ppc9a.c
index 830fd9a23b5..d79104669cd 100644
--- a/arch/powerpc/platforms/86xx/gef_ppc9a.c
+++ b/arch/powerpc/platforms/86xx/gef_ppc9a.c
@@ -194,6 +194,7 @@ static long __init mpc86xx_time_init(void)
 
 static __initdata struct of_device_id of_bus_ids[] = {
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/86xx/gef_sbc310.c b/arch/powerpc/platforms/86xx/gef_sbc310.c
index ba3ce438161..af14f852d74 100644
--- a/arch/powerpc/platforms/86xx/gef_sbc310.c
+++ b/arch/powerpc/platforms/86xx/gef_sbc310.c
@@ -205,6 +205,7 @@ static long __init mpc86xx_time_init(void)
 
 static __initdata struct of_device_id of_bus_ids[] = {
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/86xx/gef_sbc610.c b/arch/powerpc/platforms/86xx/gef_sbc610.c
index d6b772ba3b8..ea236063965 100644
--- a/arch/powerpc/platforms/86xx/gef_sbc610.c
+++ b/arch/powerpc/platforms/86xx/gef_sbc610.c
@@ -194,6 +194,7 @@ static long __init mpc86xx_time_init(void)
 
 static __initdata struct of_device_id of_bus_ids[] = {
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
index e8d54ac5292..3f49a6f893a 100644
--- a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
+++ b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
@@ -46,6 +46,7 @@ static unsigned char *pixis_bdcfg0, *pixis_arch;
 static struct of_device_id __initdata mpc8610_ids[] = {
 	{ .compatible = "fsl,mpc8610-immr", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{}
 };
 
diff --git a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
index 27e0e682d8e..c4ec49b5f7f 100644
--- a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
+++ b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
@@ -148,6 +148,7 @@ mpc86xx_time_init(void)
 static __initdata struct of_device_id of_bus_ids[] = {
 	{ .compatible = "simple-bus", },
 	{ .compatible = "fsl,rapidio-delta", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/86xx/sbc8641d.c b/arch/powerpc/platforms/86xx/sbc8641d.c
index 5fd7ed40986..2886a36fc08 100644
--- a/arch/powerpc/platforms/86xx/sbc8641d.c
+++ b/arch/powerpc/platforms/86xx/sbc8641d.c
@@ -103,6 +103,7 @@ mpc86xx_time_init(void)
 
 static __initdata struct of_device_id of_bus_ids[] = {
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
-- 
cgit v1.2.3


From 82631f5dd114e52239fb3d1e270a49d37c088b46 Mon Sep 17 00:00:00 2001
From: Jeremy Kerr <jk@ozlabs.org>
Date: Mon, 23 Mar 2009 16:55:08 +0000
Subject: powerpc: Add write barrier before enabling DTL flags

Currently, we don't enforce any ordering for updates to the lppaca
when enabling dtl logging, so we may end up enabling logging before the
index fields have been established.

This change adds a smp_wmb() before doing the actual enable.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/platforms/pseries/dtl.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/pseries/dtl.c b/arch/powerpc/platforms/pseries/dtl.c
index dc9b0f81e60..fafcaa0e81e 100644
--- a/arch/powerpc/platforms/pseries/dtl.c
+++ b/arch/powerpc/platforms/pseries/dtl.c
@@ -107,6 +107,10 @@ static int dtl_enable(struct dtl *dtl)
 	/* set our initial buffer indices */
 	dtl->last_idx = lppaca[dtl->cpu].dtl_idx = 0;
 
+	/* ensure that our updates to the lppaca fields have occurred before
+	 * we actually enable the logging */
+	smp_wmb();
+
 	/* enable event logging */
 	lppaca[dtl->cpu].dtl_enable_mask = dtl_event_mask;
 
-- 
cgit v1.2.3


From 393adcacadeea407925348b1a59ae8509ecffb3c Mon Sep 17 00:00:00 2001
From: Wolfgang Grandegger <wg@grandegger.com>
Date: Sun, 22 Mar 2009 14:58:43 +0100
Subject: powerpc/85xx: Add support for the "socrates" board (MPC8544).

Supported are Ethernet, serial console, I2C, I2C-based RTC and
temperature sensors, NOR and NAND flash, PCI, USB, CAN and Lime
display controller.

The multiplexing of FPGA interrupts onto PowerPC interrupt lines is
supported through our own fpga_pic interrupt controller driver.

For example the SJA1000 controller is level low sensitive connected to
fpga_pic line 2 and is routed to the second (of three) irq lines to
the CPU:

    can@3,100 {
            compatible = "philips,sja1000";
            reg = <3 0x100 0x80>;
            interrupts = <2 2>;
            interrupts = <2 8 1>;   // number, type, routing
            interrupt-parent = <&fpga_pic>;
    };

Signed-off-by: Sergei Poselenov <sposelenov@emcraft.com>
Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Dmitry Rakhchev <rda@emcraft.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 arch/powerpc/platforms/85xx/Kconfig             |   6 +
 arch/powerpc/platforms/85xx/Makefile            |   1 +
 arch/powerpc/platforms/85xx/socrates.c          | 133 ++++++++++
 arch/powerpc/platforms/85xx/socrates_fpga_pic.c | 327 ++++++++++++++++++++++++
 arch/powerpc/platforms/85xx/socrates_fpga_pic.h |  16 ++
 5 files changed, 483 insertions(+)
 create mode 100644 arch/powerpc/platforms/85xx/socrates.c
 create mode 100644 arch/powerpc/platforms/85xx/socrates_fpga_pic.c
 create mode 100644 arch/powerpc/platforms/85xx/socrates_fpga_pic.h

(limited to 'arch/powerpc/platforms')

diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig
index b79dc710ed3..7f066adc068 100644
--- a/arch/powerpc/platforms/85xx/Kconfig
+++ b/arch/powerpc/platforms/85xx/Kconfig
@@ -51,6 +51,12 @@ config MPC85xx_DS
 	help
 	  This option enables support for the MPC85xx DS (MPC8544 DS) board
 
+config SOCRATES
+	bool "Socrates"
+	select DEFAULT_UIMAGE
+	help
+	  This option enables support for the Socrates board.
+
 config KSI8560
         bool "Emerson KSI8560"
         select DEFAULT_UIMAGE
diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile
index f0798c09980..a857b35b982 100644
--- a/arch/powerpc/platforms/85xx/Makefile
+++ b/arch/powerpc/platforms/85xx/Makefile
@@ -13,4 +13,5 @@ obj-$(CONFIG_STX_GP3)	  += stx_gp3.o
 obj-$(CONFIG_TQM85xx)	  += tqm85xx.o
 obj-$(CONFIG_SBC8560)     += sbc8560.o
 obj-$(CONFIG_SBC8548)     += sbc8548.o
+obj-$(CONFIG_SOCRATES)    += socrates.o socrates_fpga_pic.o
 obj-$(CONFIG_KSI8560)	  += ksi8560.o
diff --git a/arch/powerpc/platforms/85xx/socrates.c b/arch/powerpc/platforms/85xx/socrates.c
new file mode 100644
index 00000000000..d0e8443b12c
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/socrates.c
@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2008 Emcraft Systems
+ * Sergei Poselenov <sposelenov@emcraft.com>
+ *
+ * Based on MPC8560 ADS and arch/ppc tqm85xx ports
+ *
+ * Maintained by Kumar Gala (see MAINTAINERS for contact information)
+ *
+ * Copyright 2008 Freescale Semiconductor Inc.
+ *
+ * Copyright (c) 2005-2006 DENX Software Engineering
+ * Stefan Roese <sr@denx.de>
+ *
+ * Based on original work by
+ * 	Kumar Gala <kumar.gala@freescale.com>
+ *      Copyright 2004 Freescale Semiconductor Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/delay.h>
+#include <linux/seq_file.h>
+#include <linux/of_platform.h>
+
+#include <asm/system.h>
+#include <asm/time.h>
+#include <asm/machdep.h>
+#include <asm/pci-bridge.h>
+#include <asm/mpic.h>
+#include <asm/prom.h>
+#include <mm/mmu_decl.h>
+#include <asm/udbg.h>
+
+#include <sysdev/fsl_soc.h>
+#include <sysdev/fsl_pci.h>
+
+#include "socrates_fpga_pic.h"
+
+static void __init socrates_pic_init(void)
+{
+	struct mpic *mpic;
+	struct resource r;
+	struct device_node *np;
+
+	np = of_find_node_by_type(NULL, "open-pic");
+	if (!np) {
+		printk(KERN_ERR "Could not find open-pic node\n");
+		return;
+	}
+
+	if (of_address_to_resource(np, 0, &r)) {
+		printk(KERN_ERR "Could not map mpic register space\n");
+		of_node_put(np);
+		return;
+	}
+
+	mpic = mpic_alloc(np, r.start,
+			MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
+			0, 256, " OpenPIC  ");
+	BUG_ON(mpic == NULL);
+	of_node_put(np);
+
+	mpic_init(mpic);
+
+	np = of_find_compatible_node(NULL, NULL, "abb,socrates-fpga-pic");
+	if (!np) {
+		printk(KERN_ERR "Could not find socrates-fpga-pic node\n");
+		return;
+	}
+	socrates_fpga_pic_init(np);
+	of_node_put(np);
+}
+
+/*
+ * Setup the architecture
+ */
+static void __init socrates_setup_arch(void)
+{
+#ifdef CONFIG_PCI
+	struct device_node *np;
+#endif
+
+	if (ppc_md.progress)
+		ppc_md.progress("socrates_setup_arch()", 0);
+
+#ifdef CONFIG_PCI
+	for_each_compatible_node(np, "pci", "fsl,mpc8540-pci")
+		fsl_add_bridge(np, 1);
+#endif
+}
+
+static struct of_device_id __initdata socrates_of_bus_ids[] = {
+	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
+	{},
+};
+
+static void __init socrates_init(void)
+{
+	of_platform_bus_probe(NULL, socrates_of_bus_ids, NULL);
+}
+
+/*
+ * Called very early, device-tree isn't unflattened
+ */
+static int __init socrates_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	if (of_flat_dt_is_compatible(root, "abb,socrates"))
+		return 1;
+
+	return 0;
+}
+
+define_machine(socrates) {
+	.name			= "Socrates",
+	.probe			= socrates_probe,
+	.setup_arch		= socrates_setup_arch,
+	.init			= socrates_init,
+	.init_IRQ		= socrates_pic_init,
+	.get_irq		= mpic_get_irq,
+	.restart		= fsl_rstcr_restart,
+	.calibrate_decr		= generic_calibrate_decr,
+	.progress		= udbg_progress,
+};
diff --git a/arch/powerpc/platforms/85xx/socrates_fpga_pic.c b/arch/powerpc/platforms/85xx/socrates_fpga_pic.c
new file mode 100644
index 00000000000..60edf63d015
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/socrates_fpga_pic.c
@@ -0,0 +1,327 @@
+/*
+ *  Copyright (C) 2008 Ilya Yanok, Emcraft Systems
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/irq.h>
+#include <linux/of_platform.h>
+#include <linux/io.h>
+
+/*
+ * The FPGA supports 9 interrupt sources, which can be routed to 3
+ * interrupt request lines of the MPIC. The line to be used can be
+ * specified through the third cell of FDT property  "interrupts".
+ */
+
+#define SOCRATES_FPGA_NUM_IRQS	9
+
+#define FPGA_PIC_IRQCFG		(0x0)
+#define FPGA_PIC_IRQMASK(n)	(0x4 + 0x4 * (n))
+
+#define SOCRATES_FPGA_IRQ_MASK	((1 << SOCRATES_FPGA_NUM_IRQS) - 1)
+
+struct socrates_fpga_irq_info {
+	unsigned int irq_line;
+	int type;
+};
+
+/*
+ * Interrupt routing and type table
+ *
+ * IRQ_TYPE_NONE means the interrupt type is configurable,
+ * otherwise it's fixed to the specified value.
+ */
+static struct socrates_fpga_irq_info fpga_irqs[SOCRATES_FPGA_NUM_IRQS] = {
+	[0] = {0, IRQ_TYPE_NONE},
+	[1] = {0, IRQ_TYPE_LEVEL_HIGH},
+	[2] = {0, IRQ_TYPE_LEVEL_LOW},
+	[3] = {0, IRQ_TYPE_NONE},
+	[4] = {0, IRQ_TYPE_NONE},
+	[5] = {0, IRQ_TYPE_NONE},
+	[6] = {0, IRQ_TYPE_NONE},
+	[7] = {0, IRQ_TYPE_NONE},
+	[8] = {0, IRQ_TYPE_LEVEL_HIGH},
+};
+
+#define socrates_fpga_irq_to_hw(virq)    ((unsigned int)irq_map[virq].hwirq)
+
+static DEFINE_SPINLOCK(socrates_fpga_pic_lock);
+
+static void __iomem *socrates_fpga_pic_iobase;
+static struct irq_host *socrates_fpga_pic_irq_host;
+static unsigned int socrates_fpga_irqs[3];
+
+static inline uint32_t socrates_fpga_pic_read(int reg)
+{
+	return in_be32(socrates_fpga_pic_iobase + reg);
+}
+
+static inline void socrates_fpga_pic_write(int reg, uint32_t val)
+{
+	out_be32(socrates_fpga_pic_iobase + reg, val);
+}
+
+static inline unsigned int socrates_fpga_pic_get_irq(unsigned int irq)
+{
+	uint32_t cause;
+	unsigned long flags;
+	int i;
+
+	/* Check irq line routed to the MPIC */
+	for (i = 0; i < 3; i++) {
+		if (irq == socrates_fpga_irqs[i])
+			break;
+	}
+	if (i == 3)
+		return NO_IRQ;
+
+	spin_lock_irqsave(&socrates_fpga_pic_lock, flags);
+	cause = socrates_fpga_pic_read(FPGA_PIC_IRQMASK(i));
+	spin_unlock_irqrestore(&socrates_fpga_pic_lock, flags);
+	for (i = SOCRATES_FPGA_NUM_IRQS - 1; i >= 0; i--) {
+		if (cause >> (i + 16))
+			break;
+	}
+	return irq_linear_revmap(socrates_fpga_pic_irq_host,
+			(irq_hw_number_t)i);
+}
+
+void socrates_fpga_pic_cascade(unsigned int irq, struct irq_desc *desc)
+{
+	unsigned int cascade_irq;
+
+	/*
+	 * See if we actually have an interrupt, call generic handling code if
+	 * we do.
+	 */
+	cascade_irq = socrates_fpga_pic_get_irq(irq);
+
+	if (cascade_irq != NO_IRQ)
+		generic_handle_irq(cascade_irq);
+	desc->chip->eoi(irq);
+
+}
+
+static void socrates_fpga_pic_ack(unsigned int virq)
+{
+	unsigned long flags;
+	unsigned int hwirq, irq_line;
+	uint32_t mask;
+
+	hwirq = socrates_fpga_irq_to_hw(virq);
+
+	irq_line = fpga_irqs[hwirq].irq_line;
+	spin_lock_irqsave(&socrates_fpga_pic_lock, flags);
+	mask = socrates_fpga_pic_read(FPGA_PIC_IRQMASK(irq_line))
+		& SOCRATES_FPGA_IRQ_MASK;
+	mask |= (1 << (hwirq + 16));
+	socrates_fpga_pic_write(FPGA_PIC_IRQMASK(irq_line), mask);
+	spin_unlock_irqrestore(&socrates_fpga_pic_lock, flags);
+}
+
+static void socrates_fpga_pic_mask(unsigned int virq)
+{
+	unsigned long flags;
+	unsigned int hwirq;
+	int irq_line;
+	u32 mask;
+
+	hwirq = socrates_fpga_irq_to_hw(virq);
+
+	irq_line = fpga_irqs[hwirq].irq_line;
+	spin_lock_irqsave(&socrates_fpga_pic_lock, flags);
+	mask = socrates_fpga_pic_read(FPGA_PIC_IRQMASK(irq_line))
+		& SOCRATES_FPGA_IRQ_MASK;
+	mask &= ~(1 << hwirq);
+	socrates_fpga_pic_write(FPGA_PIC_IRQMASK(irq_line), mask);
+	spin_unlock_irqrestore(&socrates_fpga_pic_lock, flags);
+}
+
+static void socrates_fpga_pic_mask_ack(unsigned int virq)
+{
+	unsigned long flags;
+	unsigned int hwirq;
+	int irq_line;
+	u32 mask;
+
+	hwirq = socrates_fpga_irq_to_hw(virq);
+
+	irq_line = fpga_irqs[hwirq].irq_line;
+	spin_lock_irqsave(&socrates_fpga_pic_lock, flags);
+	mask = socrates_fpga_pic_read(FPGA_PIC_IRQMASK(irq_line))
+		& SOCRATES_FPGA_IRQ_MASK;
+	mask &= ~(1 << hwirq);
+	mask |= (1 << (hwirq + 16));
+	socrates_fpga_pic_write(FPGA_PIC_IRQMASK(irq_line), mask);
+	spin_unlock_irqrestore(&socrates_fpga_pic_lock, flags);
+}
+
+static void socrates_fpga_pic_unmask(unsigned int virq)
+{
+	unsigned long flags;
+	unsigned int hwirq;
+	int irq_line;
+	u32 mask;
+
+	hwirq = socrates_fpga_irq_to_hw(virq);
+
+	irq_line = fpga_irqs[hwirq].irq_line;
+	spin_lock_irqsave(&socrates_fpga_pic_lock, flags);
+	mask = socrates_fpga_pic_read(FPGA_PIC_IRQMASK(irq_line))
+		& SOCRATES_FPGA_IRQ_MASK;
+	mask |= (1 << hwirq);
+	socrates_fpga_pic_write(FPGA_PIC_IRQMASK(irq_line), mask);
+	spin_unlock_irqrestore(&socrates_fpga_pic_lock, flags);
+}
+
+static void socrates_fpga_pic_eoi(unsigned int virq)
+{
+	unsigned long flags;
+	unsigned int hwirq;
+	int irq_line;
+	u32 mask;
+
+	hwirq = socrates_fpga_irq_to_hw(virq);
+
+	irq_line = fpga_irqs[hwirq].irq_line;
+	spin_lock_irqsave(&socrates_fpga_pic_lock, flags);
+	mask = socrates_fpga_pic_read(FPGA_PIC_IRQMASK(irq_line))
+		& SOCRATES_FPGA_IRQ_MASK;
+	mask |= (1 << (hwirq + 16));
+	socrates_fpga_pic_write(FPGA_PIC_IRQMASK(irq_line), mask);
+	spin_unlock_irqrestore(&socrates_fpga_pic_lock, flags);
+}
+
+static int socrates_fpga_pic_set_type(unsigned int virq,
+		unsigned int flow_type)
+{
+	unsigned long flags;
+	unsigned int hwirq;
+	int polarity;
+	u32 mask;
+
+	hwirq = socrates_fpga_irq_to_hw(virq);
+
+	if (fpga_irqs[hwirq].type != IRQ_TYPE_NONE)
+		return -EINVAL;
+
+	switch (flow_type & IRQ_TYPE_SENSE_MASK) {
+	case IRQ_TYPE_LEVEL_HIGH:
+		polarity = 1;
+		break;
+	case IRQ_TYPE_LEVEL_LOW:
+		polarity = 0;
+		break;
+	default:
+		return -EINVAL;
+	}
+	spin_lock_irqsave(&socrates_fpga_pic_lock, flags);
+	mask = socrates_fpga_pic_read(FPGA_PIC_IRQCFG);
+	if (polarity)
+		mask |= (1 << hwirq);
+	else
+		mask &= ~(1 << hwirq);
+	socrates_fpga_pic_write(FPGA_PIC_IRQCFG, mask);
+	spin_unlock_irqrestore(&socrates_fpga_pic_lock, flags);
+	return 0;
+}
+
+static struct irq_chip socrates_fpga_pic_chip = {
+	.typename       = " FPGA-PIC ",
+	.ack		= socrates_fpga_pic_ack,
+	.mask           = socrates_fpga_pic_mask,
+	.mask_ack       = socrates_fpga_pic_mask_ack,
+	.unmask         = socrates_fpga_pic_unmask,
+	.eoi		= socrates_fpga_pic_eoi,
+	.set_type	= socrates_fpga_pic_set_type,
+};
+
+static int socrates_fpga_pic_host_map(struct irq_host *h, unsigned int virq,
+		irq_hw_number_t hwirq)
+{
+	/* All interrupts are LEVEL sensitive */
+	get_irq_desc(virq)->status |= IRQ_LEVEL;
+	set_irq_chip_and_handler(virq, &socrates_fpga_pic_chip,
+			handle_fasteoi_irq);
+
+	return 0;
+}
+
+static int socrates_fpga_pic_host_xlate(struct irq_host *h,
+		struct device_node *ct,	u32 *intspec, unsigned int intsize,
+		irq_hw_number_t *out_hwirq, unsigned int *out_flags)
+{
+	struct socrates_fpga_irq_info *fpga_irq = &fpga_irqs[intspec[0]];
+
+	*out_hwirq = intspec[0];
+	if  (fpga_irq->type == IRQ_TYPE_NONE) {
+		/* type is configurable */
+		if (intspec[1] != IRQ_TYPE_LEVEL_LOW &&
+		    intspec[1] != IRQ_TYPE_LEVEL_HIGH) {
+			pr_warning("FPGA PIC: invalid irq type, "
+				   "setting default active low\n");
+			*out_flags = IRQ_TYPE_LEVEL_LOW;
+		} else {
+			*out_flags = intspec[1];
+		}
+	} else {
+		/* type is fixed */
+		*out_flags = fpga_irq->type;
+	}
+
+	/* Use specified interrupt routing */
+	if (intspec[2] <= 2)
+		fpga_irq->irq_line = intspec[2];
+	else
+		pr_warning("FPGA PIC: invalid irq routing\n");
+
+	return 0;
+}
+
+static struct irq_host_ops socrates_fpga_pic_host_ops = {
+	.map    = socrates_fpga_pic_host_map,
+	.xlate  = socrates_fpga_pic_host_xlate,
+};
+
+void socrates_fpga_pic_init(struct device_node *pic)
+{
+	unsigned long flags;
+	int i;
+
+	/* Setup an irq_host structure */
+	socrates_fpga_pic_irq_host = irq_alloc_host(pic, IRQ_HOST_MAP_LINEAR,
+			SOCRATES_FPGA_NUM_IRQS,	&socrates_fpga_pic_host_ops,
+			SOCRATES_FPGA_NUM_IRQS);
+	if (socrates_fpga_pic_irq_host == NULL) {
+		pr_err("FPGA PIC: Unable to allocate host\n");
+		return;
+	}
+
+	for (i = 0; i < 3; i++) {
+		socrates_fpga_irqs[i] = irq_of_parse_and_map(pic, i);
+		if (socrates_fpga_irqs[i] == NO_IRQ) {
+			pr_warning("FPGA PIC: can't get irq%d.\n", i);
+			continue;
+		}
+		set_irq_chained_handler(socrates_fpga_irqs[i],
+				socrates_fpga_pic_cascade);
+	}
+
+	socrates_fpga_pic_iobase = of_iomap(pic, 0);
+
+	spin_lock_irqsave(&socrates_fpga_pic_lock, flags);
+	socrates_fpga_pic_write(FPGA_PIC_IRQMASK(0),
+			SOCRATES_FPGA_IRQ_MASK << 16);
+	socrates_fpga_pic_write(FPGA_PIC_IRQMASK(1),
+			SOCRATES_FPGA_IRQ_MASK << 16);
+	socrates_fpga_pic_write(FPGA_PIC_IRQMASK(2),
+			SOCRATES_FPGA_IRQ_MASK << 16);
+	spin_unlock_irqrestore(&socrates_fpga_pic_lock, flags);
+
+	pr_info("FPGA PIC: Setting up Socrates FPGA PIC\n");
+}
diff --git a/arch/powerpc/platforms/85xx/socrates_fpga_pic.h b/arch/powerpc/platforms/85xx/socrates_fpga_pic.h
new file mode 100644
index 00000000000..21d7d8e4219
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/socrates_fpga_pic.h
@@ -0,0 +1,16 @@
+/*
+ *  Copyright (C) 2008 Ilya Yanok, Emcraft Systems
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#ifndef SOCRATES_FPGA_PIC_H
+#define SOCRATES_FPGA_PIC_H
+
+void socrates_fpga_pic_init(struct device_node *pic);
+
+#endif
-- 
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