Merge branch 'for-2.6.25' of master.kernel.org:/pub/scm/linux/kernel/git/olof/pasemi into for-2.6.25

arch/powerpc/configs/pasemi_defconfig

@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
 # Linux kernel version: 2.6.24-rc6
-# Fri Dec 28 11:01:53 2007
+# Tue Jan 15 10:26:10 2008
 #
 CONFIG_PPC64=y
 
@@ -152,7 +152,6 @@ CONFIG_PPC_PASEMI=y
 CONFIG_PPC_PASEMI_IOMMU=y
 # CONFIG_PPC_PASEMI_IOMMU_DMA_FORCE is not set
 CONFIG_PPC_PASEMI_MDIO=y
-CONFIG_ELECTRA_IDE=y
 # CONFIG_PPC_CELLEB is not set
 # CONFIG_PPC_PS3 is not set
 # CONFIG_PPC_CELL is not set
@@ -663,6 +662,7 @@ CONFIG_PATA_PCMCIA=y
 # CONFIG_PATA_VIA is not set
 # CONFIG_PATA_WINBOND is not set
 CONFIG_PATA_PLATFORM=y
+CONFIG_PATA_OF_PLATFORM=y
 CONFIG_MD=y
 CONFIG_BLK_DEV_MD=y
 CONFIG_MD_LINEAR=y

arch/powerpc/platforms/pasemi/Kconfig

@@ -37,13 +37,4 @@ config PPC_PASEMI_MDIO
 	help
 	  Driver for MDIO via GPIO on PWRficient platforms
 
-config ELECTRA_IDE
-      tristate "Electra IDE driver"
-      default y
-      depends on PPC_PASEMI && ATA
-      select PATA_PLATFORM
-      help
-	This includes driver support for the Electra on-board IDE
-	interface.
-
 endmenu

arch/powerpc/platforms/pasemi/Makefile

@@ -1,4 +1,3 @@
 obj-y	+= setup.o pci.o time.o idle.o powersave.o iommu.o
 obj-$(CONFIG_PPC_PASEMI_MDIO)	+= gpio_mdio.o
-obj-$(CONFIG_ELECTRA_IDE) += electra_ide.o
 obj-$(CONFIG_PPC_PASEMI_CPUFREQ) += cpufreq.o

arch/powerpc/platforms/pasemi/electra_ide.c

@@ -1,96 +0,0 @@
-/*
- * Copyright (C) 2007 PA Semi, Inc
- *
- * Maintained by: Olof Johansson <olof@lixom.net>
- *
- * 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.
- *
- * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
- */
-
-#include <linux/platform_device.h>
-
-#include <asm/prom.h>
-#include <asm/system.h>
-
-/* The electra IDE interface is incredibly simple: Just a device on the localbus
- * with interrupts hooked up to one of the GPIOs. The device tree contains the
- * address window and interrupt mappings already, and the pata_platform driver handles
- * the rest. We just need to hook the two up.
- */
-
-#define MAX_IFS	4	/* really, we have only one */
-
-static struct platform_device *pdevs[MAX_IFS];
-
-static int __devinit electra_ide_init(void)
-{
-	struct device_node *np;
-	struct resource r[3];
-	int ret = 0;
-	int i;
-
-	np = of_find_compatible_node(NULL, "ide", "electra-ide");
-	i = 0;
-
-	while (np && i < MAX_IFS) {
-		memset(r, 0, sizeof(r));
-
-		/* pata_platform wants two address ranges: one for the base registers,
-		 * another for the control (altstatus). It's located at offset 0x3f6 in
-		 * the window, but the device tree only has one large register window
-		 * that covers both ranges. So we need to split it up by hand here:
-		 */
-
-		ret = of_address_to_resource(np, 0, &r[0]);
-		if (ret)
-			goto out;
-		ret = of_address_to_resource(np, 0, &r[1]);
-		if (ret)
-			goto out;
-
-		r[1].start += 0x3f6;
-		r[0].end = r[1].start-1;
-
-		r[2].start = irq_of_parse_and_map(np, 0);
-		r[2].end = irq_of_parse_and_map(np, 0);
-		r[2].flags = IORESOURCE_IRQ;
-
-		pr_debug("registering platform device at 0x%lx/0x%lx, irq is %ld\n",
-			 r[0].start, r[1].start, r[2].start);
-		pdevs[i] = platform_device_register_simple("pata_platform", i, r, 3);
-		if (IS_ERR(pdevs[i])) {
-			ret = PTR_ERR(pdevs[i]);
-			pdevs[i] = NULL;
-			goto out;
-		}
-		np = of_find_compatible_node(np, "ide", "electra-ide");
-	}
-out:
-	return ret;
-}
-module_init(electra_ide_init);
-
-static void __devexit electra_ide_exit(void)
-{
-	int i;
-
-	for (i = 0; i < MAX_IFS; i++)
-		if (pdevs[i])
-			platform_device_unregister(pdevs[i]);
-}
-module_exit(electra_ide_exit);
-
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR ("Olof Johansson <olof@lixom.net>");
-MODULE_DESCRIPTION("PA Semi Electra IDE driver");

arch/powerpc/platforms/pasemi/idle.c

@@ -74,9 +74,6 @@ static int pasemi_system_reset_exception(struct pt_regs *regs)
 
 static int __init pasemi_idle_init(void)
 {
-	if (!machine_is(pasemi))
-		return -ENODEV;
-
 #ifndef CONFIG_PPC_PASEMI_CPUFREQ
 	printk(KERN_WARNING "No cpufreq driver, powersavings modes disabled\n");
 	current_mode = 0;
@@ -88,7 +85,7 @@ static int __init pasemi_idle_init(void)
 
 	return 0;
 }
-late_initcall(pasemi_idle_init);
+machine_late_initcall(pasemi, pasemi_idle_init);
 
 static int __init idle_param(char *p)
 {

arch/powerpc/platforms/pasemi/setup.c

@@ -135,9 +135,6 @@ static int __init pas_setup_mce_regs(void)
 	struct pci_dev *dev;
 	int reg;
 
-	if (!machine_is(pasemi))
-		return -ENODEV;
-
 	/* Remap various SoC status registers for use by the MCE handler */
 
 	reg = 0;
@@ -181,7 +178,7 @@ static int __init pas_setup_mce_regs(void)
 
 	return 0;
 }
-device_initcall(pas_setup_mce_regs);
+machine_device_initcall(pasemi, pas_setup_mce_regs);
 
 static __init void pas_init_IRQ(void)
 {
@@ -264,7 +261,7 @@ static int pas_machine_check_handler(struct pt_regs *regs)
 	srr0 = regs->nip;
 	srr1 = regs->msr;
 
-	if (mpic_get_mcirq() == nmi_virq) {
+	if (nmi_virq != NO_IRQ && mpic_get_mcirq() == nmi_virq) {
 		printk(KERN_ERR "NMI delivered\n");
 		debugger(regs);
 		mpic_end_irq(nmi_virq);
@@ -405,9 +402,6 @@ static struct of_device_id pasemi_bus_ids[] = {
 
 static int __init pasemi_publish_devices(void)
 {
-	if (!machine_is(pasemi))
-		return 0;
-
 	pasemi_pcmcia_init();
 
 	/* Publish OF platform devices for SDC and other non-PCI devices */
@@ -415,7 +409,7 @@ static int __init pasemi_publish_devices(void)
 
 	return 0;
 }
-device_initcall(pasemi_publish_devices);
+machine_device_initcall(pasemi, pasemi_publish_devices);
 
 
 /*

drivers/ata/Kconfig

@@ -607,13 +607,23 @@ config PATA_WINBOND_VLB
 
 config PATA_PLATFORM
 	tristate "Generic platform device PATA support"
-	depends on EMBEDDED || ARCH_RPC
+	depends on EMBEDDED || ARCH_RPC || PPC
 	help
 	  This option enables support for generic directly connected ATA
 	  devices commonly found on embedded systems.
 
 	  If unsure, say N.
 
+config PATA_OF_PLATFORM
+	tristate "OpenFirmware platform device PATA support"
+	depends on PATA_PLATFORM && PPC_OF
+	help
+	  This option enables support for generic directly connected ATA
+	  devices commonly found on embedded systems with OpenFirmware
+	  bindings.
+
+	  If unsure, say N.
+
 config PATA_ICSIDE
 	tristate "Acorn ICS PATA support"
 	depends on ARM && ARCH_ACORN

drivers/ata/Makefile

@@ -67,6 +67,7 @@ obj-$(CONFIG_PATA_IXP4XX_CF)	+= pata_ixp4xx_cf.o
 obj-$(CONFIG_PATA_SCC)		+= pata_scc.o
 obj-$(CONFIG_PATA_BF54X)	+= pata_bf54x.o
 obj-$(CONFIG_PATA_PLATFORM)	+= pata_platform.o
+obj-$(CONFIG_PATA_OF_PLATFORM)	+= pata_of_platform.o
 obj-$(CONFIG_PATA_ICSIDE)	+= pata_icside.o
 # Should be last but two libata driver
 obj-$(CONFIG_PATA_ACPI)		+= pata_acpi.o

drivers/ata/pata_of_platform.c

@@ -0,0 +1,114 @@
+/*
+ * OF-platform PATA driver
+ *
+ * Copyright (c) 2007  MontaVista Software, Inc.
+ *                     Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/pata_platform.h>
+
+static int __devinit pata_of_platform_probe(struct of_device *ofdev,
+					    const struct of_device_id *match)
+{
+	int ret;
+	struct device_node *dn = ofdev->node;
+	struct resource io_res;
+	struct resource ctl_res;
+	struct resource irq_res;
+	unsigned int reg_shift = 0;
+	int pio_mode = 0;
+	int pio_mask;
+	const u32 *prop;
+
+	ret = of_address_to_resource(dn, 0, &io_res);
+	if (ret) {
+		dev_err(&ofdev->dev, "can't get IO address from "
+			"device tree\n");
+		return -EINVAL;
+	}
+
+	if (of_device_is_compatible(dn, "electra-ide")) {
+		/* Altstatus is really at offset 0x3f6 from the primary window
+		 * on electra-ide. Adjust ctl_res and io_res accordingly.
+		 */
+		ctl_res = io_res;
+		ctl_res.start = ctl_res.start+0x3f6;
+		io_res.end = ctl_res.start-1;
+	} else {
+		ret = of_address_to_resource(dn, 1, &ctl_res);
+		if (ret) {
+			dev_err(&ofdev->dev, "can't get CTL address from "
+				"device tree\n");
+			return -EINVAL;
+		}
+	}
+
+	ret = of_irq_to_resource(dn, 0, &irq_res);
+	if (ret == NO_IRQ)
+		irq_res.start = irq_res.end = -1;
+	else
+		irq_res.flags = 0;
+
+	prop = of_get_property(dn, "reg-shift", NULL);
+	if (prop)
+		reg_shift = *prop;
+
+	prop = of_get_property(dn, "pio-mode", NULL);
+	if (prop) {
+		pio_mode = *prop;
+		if (pio_mode > 6) {
+			dev_err(&ofdev->dev, "invalid pio-mode\n");
+			return -EINVAL;
+		}
+	} else {
+		dev_info(&ofdev->dev, "pio-mode unspecified, assuming PIO0\n");
+	}
+
+	pio_mask = 1 << pio_mode;
+	pio_mask |= (1 << pio_mode) - 1;
+
+	return __pata_platform_probe(&ofdev->dev, &io_res, &ctl_res, &irq_res,
+				     reg_shift, pio_mask);
+}
+
+static int __devexit pata_of_platform_remove(struct of_device *ofdev)
+{
+	return __pata_platform_remove(&ofdev->dev);
+}
+
+static struct of_device_id pata_of_platform_match[] = {
+	{ .compatible = "ata-generic", },
+	{ .compatible = "electra-ide", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, pata_of_platform_match);
+
+static struct of_platform_driver pata_of_platform_driver = {
+	.name		= "pata_of_platform",
+	.match_table	= pata_of_platform_match,
+	.probe		= pata_of_platform_probe,
+	.remove		= __devexit_p(pata_of_platform_remove),
+};
+
+static int __init pata_of_platform_init(void)
+{
+	return of_register_platform_driver(&pata_of_platform_driver);
+}
+module_init(pata_of_platform_init);
+
+static void __exit pata_of_platform_exit(void)
+{
+	of_unregister_platform_driver(&pata_of_platform_driver);
+}
+module_exit(pata_of_platform_exit);
+
+MODULE_DESCRIPTION("OF-platform PATA driver");
+MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
+MODULE_LICENSE("GPL");

drivers/ata/pata_platform.c

@@ -93,14 +93,9 @@ static struct ata_port_operations pata_platform_port_ops = {
 };
 
 static void pata_platform_setup_port(struct ata_ioports *ioaddr,
-				     struct pata_platform_info *info)
+				     unsigned int shift)
 {
-	unsigned int shift = 0;
-
 	/* Fixup the port shift for platforms that need it */
-	if (info && info->ioport_shift)
-		shift = info->ioport_shift;
-
 	ioaddr->data_addr	= ioaddr->cmd_addr + (ATA_REG_DATA    << shift);
 	ioaddr->error_addr	= ioaddr->cmd_addr + (ATA_REG_ERR     << shift);
 	ioaddr->feature_addr	= ioaddr->cmd_addr + (ATA_REG_FEATURE << shift);
@@ -114,8 +109,13 @@ static void pata_platform_setup_port(struct ata_ioports *ioaddr,
 }
 
 /**
- *	pata_platform_probe		-	attach a platform interface
+ *	__pata_platform_probe		-	attach a platform interface
- *	@pdev: platform device
+ *	@dev: device
+ *	@io_res: Resource representing I/O base
+ *	@ctl_res: Resource representing CTL base
+ *	@irq_res: Resource representing IRQ and its flags
+ *	@ioport_shift: I/O port shift
+ *	@__pio_mask: PIO mask
  *
  *	Register a platform bus IDE interface. Such interfaces are PIO and we
  *	assume do not support IRQ sharing.
@@ -135,14 +135,109 @@ static void pata_platform_setup_port(struct ata_ioports *ioaddr,
  *
  *	If no IRQ resource is present, PIO polling mode is used instead.
  */
-static int __devinit pata_platform_probe(struct platform_device *pdev)
+int __devinit __pata_platform_probe(struct device *dev,
+				    struct resource *io_res,
+				    struct resource *ctl_res,
+				    struct resource *irq_res,
+				    unsigned int ioport_shift,
+				    int __pio_mask)
 {
-	struct resource *io_res, *ctl_res;
 	struct ata_host *host;
 	struct ata_port *ap;
-	struct pata_platform_info *pp_info;
 	unsigned int mmio;
-	int irq;
+	int irq = 0;
+	int irq_flags = 0;
+
+	/*
+	 * Check for MMIO
+	 */
+	mmio = (( io_res->flags == IORESOURCE_MEM) &&
+		(ctl_res->flags == IORESOURCE_MEM));
+
+	/*
+	 * And the IRQ
+	 */
+	if (irq_res && irq_res->start > 0) {
+		irq = irq_res->start;
+		irq_flags = irq_res->flags;
+	}
+
+	/*
+	 * Now that that's out of the way, wire up the port..
+	 */
+	host = ata_host_alloc(dev, 1);
+	if (!host)
+		return -ENOMEM;
+	ap = host->ports[0];
+
+	ap->ops = &pata_platform_port_ops;
+	ap->pio_mask = __pio_mask;
+	ap->flags |= ATA_FLAG_SLAVE_POSS;
+
+	/*
+	 * Use polling mode if there's no IRQ
+	 */
+	if (!irq) {
+		ap->flags |= ATA_FLAG_PIO_POLLING;
+		ata_port_desc(ap, "no IRQ, using PIO polling");
+	}
+
+	/*
+	 * Handle the MMIO case
+	 */
+	if (mmio) {
+		ap->ioaddr.cmd_addr = devm_ioremap(dev, io_res->start,
+				io_res->end - io_res->start + 1);
+		ap->ioaddr.ctl_addr = devm_ioremap(dev, ctl_res->start,
+				ctl_res->end - ctl_res->start + 1);
+	} else {
+		ap->ioaddr.cmd_addr = devm_ioport_map(dev, io_res->start,
+				io_res->end - io_res->start + 1);
+		ap->ioaddr.ctl_addr = devm_ioport_map(dev, ctl_res->start,
+				ctl_res->end - ctl_res->start + 1);
+	}
+	if (!ap->ioaddr.cmd_addr || !ap->ioaddr.ctl_addr) {
+		dev_err(dev, "failed to map IO/CTL base\n");
+		return -ENOMEM;
+	}
+
+	ap->ioaddr.altstatus_addr = ap->ioaddr.ctl_addr;
+
+	pata_platform_setup_port(&ap->ioaddr, ioport_shift);
+
+	ata_port_desc(ap, "%s cmd 0x%llx ctl 0x%llx", mmio ? "mmio" : "ioport",
+		      (unsigned long long)io_res->start,
+		      (unsigned long long)ctl_res->start);
+
+	/* activate */
+	return ata_host_activate(host, irq, irq ? ata_interrupt : NULL,
+				 irq_flags, &pata_platform_sht);
+}
+EXPORT_SYMBOL_GPL(__pata_platform_probe);
+
+/**
+ *	__pata_platform_remove		-	unplug a platform interface
+ *	@dev: device
+ *
+ *	A platform bus ATA device has been unplugged. Perform the needed
+ *	cleanup. Also called on module unload for any active devices.
+ */
+int __devexit __pata_platform_remove(struct device *dev)
+{
+	struct ata_host *host = dev_get_drvdata(dev);
+
+	ata_host_detach(host);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(__pata_platform_remove);
+
+static int __devinit pata_platform_probe(struct platform_device *pdev)
+{
+	struct resource *io_res;
+	struct resource *ctl_res;
+	struct resource *irq_res;
+	struct pata_platform_info *pp_info = pdev->dev.platform_data;
 
 	/*
 	 * Simple resource validation ..
@@ -172,88 +267,21 @@ static int __devinit pata_platform_probe(struct platform_device *pdev)
 			return -EINVAL;
 	}
 
-	/*
-	 * Check for MMIO
-	 */
-	mmio = (( io_res->flags == IORESOURCE_MEM) &&
-		(ctl_res->flags == IORESOURCE_MEM));
-
 	/*
 	 * And the IRQ
 	 */
-	irq = platform_get_irq(pdev, 0);
+	irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (irq < 0)
+	if (irq_res)
-		irq = 0;	/* no irq */
+		irq_res->flags = pp_info ? pp_info->irq_flags : 0;
 
-	/*
+	return __pata_platform_probe(&pdev->dev, io_res, ctl_res, irq_res,
-	 * Now that that's out of the way, wire up the port..
+				     pp_info ? pp_info->ioport_shift : 0,
-	 */
+				     pio_mask);
-	host = ata_host_alloc(&pdev->dev, 1);
-	if (!host)
-		return -ENOMEM;
-	ap = host->ports[0];
-
-	ap->ops = &pata_platform_port_ops;
-	ap->pio_mask = pio_mask;
-	ap->flags |= ATA_FLAG_SLAVE_POSS;
-
-	/*
-	 * Use polling mode if there's no IRQ
-	 */
-	if (!irq) {
-		ap->flags |= ATA_FLAG_PIO_POLLING;
-		ata_port_desc(ap, "no IRQ, using PIO polling");
-	}
-
-	/*
-	 * Handle the MMIO case
-	 */
-	if (mmio) {
-		ap->ioaddr.cmd_addr = devm_ioremap(&pdev->dev, io_res->start,
-				io_res->end - io_res->start + 1);
-		ap->ioaddr.ctl_addr = devm_ioremap(&pdev->dev, ctl_res->start,
-				ctl_res->end - ctl_res->start + 1);
-	} else {
-		ap->ioaddr.cmd_addr = devm_ioport_map(&pdev->dev, io_res->start,
-				io_res->end - io_res->start + 1);
-		ap->ioaddr.ctl_addr = devm_ioport_map(&pdev->dev, ctl_res->start,
-				ctl_res->end - ctl_res->start + 1);
-	}
-	if (!ap->ioaddr.cmd_addr || !ap->ioaddr.ctl_addr) {
-		dev_err(&pdev->dev, "failed to map IO/CTL base\n");
-		return -ENOMEM;
-	}
-
-	ap->ioaddr.altstatus_addr = ap->ioaddr.ctl_addr;
-
-	pp_info = pdev->dev.platform_data;
-	pata_platform_setup_port(&ap->ioaddr, pp_info);
-
-	ata_port_desc(ap, "%s cmd 0x%llx ctl 0x%llx", mmio ? "mmio" : "ioport",
-		      (unsigned long long)io_res->start,
-		      (unsigned long long)ctl_res->start);
-
-	/* activate */
-	return ata_host_activate(host, irq, irq ? ata_interrupt : NULL,
-				 pp_info ? pp_info->irq_flags : 0,
-				 &pata_platform_sht);
 }
 
-/**
- *	pata_platform_remove	-	unplug a platform interface
- *	@pdev: platform device
- *
- *	A platform bus ATA device has been unplugged. Perform the needed
- *	cleanup. Also called on module unload for any active devices.
- */
 static int __devexit pata_platform_remove(struct platform_device *pdev)
 {
-	struct device *dev = &pdev->dev;
+	return __pata_platform_remove(&pdev->dev);
-	struct ata_host *host = dev_get_drvdata(dev);
-
-	ata_host_detach(host);
-
-	return 0;
 }
 
 static struct platform_driver pata_platform_driver = {

include/linux/pata_platform.h

@@ -15,4 +15,13 @@ struct pata_platform_info {
 	unsigned int irq_flags;
 };
 
+extern int __devinit __pata_platform_probe(struct device *dev,
+					   struct resource *io_res,
+					   struct resource *ctl_res,
+					   struct resource *irq_res,
+					   unsigned int ioport_shift,
+					   int __pio_mask);
+
+extern int __devexit __pata_platform_remove(struct device *dev);
+
 #endif /* __LINUX_PATA_PLATFORM_H */