mcs814x: remove PCI code

None of the boards we support are using it nor have it wired out of the
SoC, just remove it.

Signed-off-by: Florian Fainelli <florian@openwrt.org>

SVN-Revision: 36061

3 files changed, 0 insertions, 459 deletions

diff --git a/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/Makefile b/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/Makefile
index bad95cc15f..68c5f4a9f5 100644
--- a/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/Makefile
+++ b/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/Makefile
@@ -3,4 +3,3 @@ obj-y += common.o
 obj-y += irq.o
 obj-y += timer.o
 obj-y += board-mcs8140-dt.o
-obj-$(CONFIG_PCI)       += pci.o
diff --git a/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/include/mach/irqs.h b/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/include/mach/irqs.h
index 78021d132d..7b9e07c1a7 100644
--- a/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/include/mach/irqs.h
+++ b/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/include/mach/irqs.h
@@ -14,9 +14,4 @@
 
 #define NR_IRQS		32
 
-#define IRQ_PCI_INTA            22
-#define IRQ_PCI_INTB            23
-#define IRQ_PCI_INTC            24
-#define IRQ_PCI_INTD            26
-
 #endif
diff --git a/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/pci.c b/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/pci.c
deleted file mode 100644
index 9ac5c46d6b..0000000000
--- a/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/pci.c
+++ /dev/null
@@ -1,453 +0,0 @@
-/*
- * Moschip MCS8140 PCI support
- *
- * Copyright (C) 2003 Moschip Semiconductors Ltd.
- * Copyright (C) 2003 Artec Design Ltd.
- * Copyright (C) 2012 Florian Fainelli <florian@openwrt.org>
- *
- * 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/init.h>
-#include <linux/pci.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/of.h>
-#include <linux/io.h>
-
-#include <asm/irq.h>
-#include <asm/system.h>
-#include <asm/mach/pci.h>
-#include <asm/mach/map.h>
-#include <mach/mcs814x.h>
-#include <mach/irqs.h>
-
-#define MCS8140_PCI_CONFIG_SIZE		SZ_64M
-#define MCS8140_PCI_IOMISC_SIZE		SZ_64M
-
-#define MCS8140_PCI_HOST_BASE           0x80000000
-#define MCS8140_PCI_IOMISC_BASE         0x00000000
-#define MCS8140_PCI_PRE_BASE            0x10000000
-#define MCS8140_PCI_NONPRE_BASE         0x30000000
-
-#define MCS8140_PCI_CFG_BASE		(MCS8140_PCI_HOST_BASE + 0x04000000)
-#define MCS8140_PCI_IO_BASE		(MCS8140_PCI_HOST_BASE)
-
-#define MCS8140_PCI_IO_VIRT_BASE	(MCS814X_IO_BASE - MCS8140_PCI_CONFIG_SIZE - \
-					 MCS8140_PCI_IOMISC_SIZE)
-#define MCS8140_PCI_CFG_VIRT_BASE	(MCS814X_IO_BASE - MCS8140_PCI_CONFIG_SIZE)
-
-#define PCI_FATAL_ERROR			1
-#define EXTERNAL_ABORT_NON_LINE_FETCH	8
-#define EPRM_DONE			0x80
-#define EPRM_SDRAM_FUNC0		0xAC
-#define PCI_INTD			4
-#define MCS8140_PCI_DEVICE_ID		0xA0009710
-#define MCS8140_PCI_CLASS_ID		0x02000011  /* Host-Class id :0x0600 */
-#define PCI_IF_CONFIG			0x200
-
-static void __iomem *mcs8140_pci_master_base;
-static void __iomem *mcs8140_eeprom_emu_base;
-
-static unsigned long __pci_addr(struct pci_bus *bus,
-				unsigned int devfn, int offset)
-{
-	unsigned int busnr = bus->number;
-	unsigned int slot;
-
-	/* we only support bus 0 */
-	if (busnr != 0)
-		return 0;
-
-	/*
-	 * Trap out illegal values
-	 */
-	BUG_ON(devfn > 255 || busnr > 255 || devfn > 255);
-
-	/* Scan 3 slots */
-	slot = PCI_SLOT(devfn);
-	switch (slot) {
-	case 1:
-	case 2:
-	case 3:
-		if (PCI_FUNC(devfn) >= 4)
-			return 0;
-
-		return MCS8140_PCI_CFG_VIRT_BASE | (PCI_SLOT(devfn) << 11) |
-			(PCI_FUNC(devfn) << 8) | offset;
-	default:
-		pr_warn("Ignoring: PCI Slot is %x\n", PCI_SLOT(devfn));
-		return 0;
-	}
-}
-
-static int mcs8140_pci_host_status(void)
-{
-	u32 host_status;
-
-	host_status = readl_relaxed(mcs8140_pci_master_base + PCI_IF_CONFIG);
-	if (host_status & PCI_FATAL_ERROR) {
-		writel_relaxed(host_status & 0xfffffff0,
-			mcs8140_pci_master_base + PCI_IF_CONFIG);
-		/* flush write */
-		host_status =
-			readl_relaxed(mcs8140_pci_master_base + PCI_IF_CONFIG);
-		return 1;
-	}
-
-	return 0;
-}
-
-static int mcs8140_pci_read_config(struct pci_bus *bus,
-					unsigned int devfn, int where,
-					int size, u32 *val)
-{
-	unsigned long v = 0xFFFFFFFF;
-	unsigned long addr = __pci_addr(bus, devfn, where);
-
-	if (addr != 0) {
-		switch (size) {
-		case 1:
-			v = readb_relaxed(addr);
-			break;
-		case 2:
-			addr &= ~1;
-			v = readw_relaxed(addr);
-			break;
-		default:
-			addr &= ~3;
-			v = readl_relaxed(addr);
-			break;
-		}
-	} else
-		v = 0xffffffff;
-
-	if (mcs8140_pci_host_status())
-		v = 0xffffffff;
-
-	*val = v;
-
-	return PCIBIOS_SUCCESSFUL;
-}
-
-static void mcs8140_eeprom_emu_init(void)
-{
-	writel_relaxed(0x0000000F, mcs8140_eeprom_emu_base + EPRM_SDRAM_FUNC0);
-	writel_relaxed(0x08000000, MCS8140_PCI_CFG_VIRT_BASE + 0x10);
-	/* Set the DONE bit of the EEPROM emulator */
-	writel_relaxed(0x01, mcs8140_eeprom_emu_base + EPRM_DONE);
-}
-
-static int mcs8140_pci_write_config(struct pci_bus *bus,
-					unsigned int devfn, int where,
-					int size, u32 val)
-{
-	unsigned long addr = __pci_addr(bus, devfn, where);
-
-	if (addr != 0) {
-		switch (size) {
-		case 1:
-			writeb_relaxed((u8)val, addr);
-			break;
-		case 2:
-			writew_relaxed((u16)val, addr);
-			break;
-		case 4:
-			writel_relaxed(val, addr);
-			break;
-		}
-	}
-
-	return PCIBIOS_SUCCESSFUL;
-}
-
-static struct pci_ops pci_mcs8140_ops = {
-	.read	= mcs8140_pci_read_config,
-	.write	= mcs8140_pci_write_config,
-};
-
-
-static struct resource io_mem = {
-	.name	= "PCI I/O space",
-	.start	= MCS8140_PCI_HOST_BASE + MCS8140_PCI_IOMISC_BASE,
-	.end	= MCS8140_PCI_HOST_BASE + MCS8140_PCI_IOMISC_BASE + SZ_64M,
-	.flags	= IORESOURCE_IO,
-};
-
-static struct resource pre_mem = {
-	.name	= "PCI prefetchable",
-	.start	= MCS8140_PCI_HOST_BASE + MCS8140_PCI_PRE_BASE,
-	.end	= MCS8140_PCI_HOST_BASE + MCS8140_PCI_PRE_BASE + SZ_512M,
-	.flags	= IORESOURCE_MEM | IORESOURCE_PREFETCH,
-};
-
-static struct resource non_mem = {
-	.name	= "PCI non-prefetchable",
-	.start	= MCS8140_PCI_HOST_BASE + MCS8140_PCI_NONPRE_BASE,
-	.end	= MCS8140_PCI_HOST_BASE + MCS8140_PCI_NONPRE_BASE + SZ_256M,
-	.flags	= IORESOURCE_MEM,
-};
-
-int __init pci_mcs8140_setup_resources(struct pci_sys_data *sys)
-{
-	int ret = 0;
-
-	ret = request_resource(&iomem_resource, &io_mem);
-	if (ret) {
-		pr_err("PCI: unable to allocate I/O "
-			"memory region (%d)\n", ret);
-		goto out;
-	}
-
-	ret = request_resource(&iomem_resource, &non_mem);
-	if (ret) {
-		pr_err("PCI: unable to allocate non-prefetchable "
-			"memory region (%d)\n", ret);
-		goto release_io_mem;
-	}
-
-	ret = request_resource(&iomem_resource, &pre_mem);
-	if (ret) {
-		pr_err("PCI: unable to allocate prefetchable "
-			"memory region (%d)\n", ret);
-		goto release_non_mem;
-	}
-
-	mcs8140_eeprom_emu_init();
-
-	pci_add_resource(&sys->resources, &io_mem);
-	pci_add_resource(&sys->resources, &non_mem);
-	pci_add_resource(&sys->resources, &pre_mem);
-
-	return ret;
-
-release_non_mem:
-	release_resource(&non_mem);
-release_io_mem:
-	release_resource(&io_mem);
-out:
-	return ret;
-}
-
-struct pci_bus *pci_mcs8140_scan_bus(int nr, struct pci_sys_data *sys)
-{
-	return pci_scan_bus(sys->busnr, &pci_mcs8140_ops, sys);
-}
-
-
-int __init pci_mcs8140_setup(int nr, struct pci_sys_data *sys)
-{
-	int ret = 0;
-	u32 val;
-
-	if (nr > 0)
-		return 0;
-
-	sys->mem_offset = MCS8140_PCI_IO_VIRT_BASE - MCS8140_PCI_IO_BASE;
-	sys->io_offset = 0;
-
-	ret = pci_mcs8140_setup_resources(sys);
-	if (ret < 0) {
-		pr_err("unable to setup mcs8140 resources\n");
-		goto out;
-	}
-
-	val = readl_relaxed(MCS8140_PCI_CFG_VIRT_BASE);
-	if (val != MCS8140_PCI_DEVICE_ID) {
-		pr_err("cannot find MCS8140 PCI Core: %08x\n", val);
-		ret = -EIO;
-		goto out;
-	}
-
-	pr_info("MCS8140 PCI core found\n");
-
-	val = readl_relaxed(MCS8140_PCI_CFG_VIRT_BASE + PCI_COMMAND);
-	/* Added to support wireless cards */
-	writel_relaxed(0, MCS8140_PCI_CFG_VIRT_BASE + 0x40);
-	writel_relaxed(val | 0x147, MCS8140_PCI_CFG_VIRT_BASE + PCI_COMMAND);
-	val = readl_relaxed(MCS8140_PCI_CFG_VIRT_BASE + PCI_COMMAND);
-	ret = 1;
-out:
-	return ret;
-}
-
-
-static int __init mcs8140_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
-{
-	int line = IRQ_PCI_INTA;
-
-	if (pin != 0) {
-		/* IRQ_PCIA - 22 */
-		if (pin == PCI_INTD)
-			line = IRQ_PCI_INTA + pin; /* IRQ_PCIA - 22 */
-		else
-			line = IRQ_PCI_INTA + pin - 1; /* IRQ_PCIA - 22 */
-	}
-
-	pr_info("PCI: Map interrupt slot 0x%02x pin 0x%02x line 0x%02x\n",
-		slot, pin, line);
-
-	return line;
-}
-
-static irqreturn_t mcs8140_pci_abort_interrupt(int irq, void *dummy)
-{
-	u32 word;
-
-	word = readl_relaxed(mcs8140_pci_master_base + PCI_IF_CONFIG);
-	if (!(word & (1 << 24)))
-		return IRQ_NONE;
-
-	writel_relaxed(word & 0xfffffff0,
-		mcs8140_pci_master_base + PCI_IF_CONFIG);
-	/* flush write */
-	word = readl_relaxed(mcs8140_pci_master_base + PCI_IF_CONFIG);
-
-	return IRQ_HANDLED;
-}
-
-static int mcs8140_pci_abort_irq_init(int irq)
-{
-	u32 word;
-
-	/* Enable Interrupt in PCI Master Core */
-	word = readl_relaxed(mcs8140_pci_master_base + PCI_IF_CONFIG);
-	word |= (1 << 24);
-	writel_relaxed(word, mcs8140_pci_master_base + PCI_IF_CONFIG);
-
-	/* flush write */
-	word = readl_relaxed(mcs8140_pci_master_base + PCI_IF_CONFIG);
-
-	return request_irq(irq, mcs8140_pci_abort_interrupt, 0,
-			"PCI abort", NULL);
-}
-
-static int mcs8140_pci_host_abort(unsigned long addr,
-				unsigned int fsr, struct pt_regs *regs)
-{
-	pr_warn("PCI Data abort: address = 0x%08lx fsr = 0x%03x"
-		"PC = 0x%08lx LR = 0x%08lx\n",
-		addr, fsr, regs->ARM_pc, regs->ARM_lr);
-
-	/*
-	 * If it was an imprecise abort, then we need to correct the
-	 * return address to be _after_ the instruction.
-	 */
-	if (fsr & (1 << 10) || mcs8140_pci_host_status())
-		regs->ARM_pc += 4;
-
-	return 0;
-}
-
-static void mcs8140_data_abort_init(void)
-{
-	hook_fault_code(EXTERNAL_ABORT_NON_LINE_FETCH,
-		mcs8140_pci_host_abort, SIGBUS,
-		0, "external abort on non-line fetch");
-}
-
-static struct hw_pci mcs8140_pci __initdata = {
-	.map_irq		= mcs8140_map_irq,
-	.nr_controllers		= 1,
-	.setup			= pci_mcs8140_setup,
-	.scan			= pci_mcs8140_scan_bus,
-};
-
-static struct map_desc mcs8140_pci_io_desc[] __initdata = {
-	{
-		.virtual	= MCS8140_PCI_CFG_VIRT_BASE,
-		.pfn		= __phys_to_pfn(MCS8140_PCI_CFG_BASE),
-		.length		= MCS8140_PCI_CONFIG_SIZE,
-		.type		= MT_DEVICE
-	},
-	{
-		.virtual	= MCS8140_PCI_IO_VIRT_BASE,
-		.pfn		= __phys_to_pfn(MCS8140_PCI_IO_BASE),
-		.length		= MCS8140_PCI_IOMISC_SIZE,
-		.type		= MT_DEVICE
-	},
-};
-
-static int __devinit mcs8140_pci_probe(struct platform_device *pdev)
-{
-	struct resource *res;
-	int ret, irq;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "failed to get mem resource 0\n");
-		return -ENODEV;
-	}
-
-	mcs8140_pci_master_base = devm_ioremap(&pdev->dev, res->start,
-					resource_size(res));
-	if (!mcs8140_pci_master_base) {
-		dev_err(&pdev->dev, "failed to remap PCI master regs\n");
-		return -ENODEV;
-	}
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-	if (!res) {
-		dev_err(&pdev->dev, "failed to get mem resource 1\n");
-		return -ENOMEM;
-	}
-
-	mcs8140_eeprom_emu_base = devm_ioremap(&pdev->dev, res->start,
-					resource_size(res));
-	if (!mcs8140_eeprom_emu_base) {
-		dev_err(&pdev->dev, "failed to remap EEPROM regs\n");
-		return -ENOMEM;
-	}
-
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_err(&pdev->dev, "failed to get pci abort irq\n");
-		return -ENODEV;
-	}
-
-	/* Setup static mappins for PCI CFG space */
-	iotable_init(mcs8140_pci_io_desc, ARRAY_SIZE(mcs8140_pci_io_desc));
-
-	pcibios_min_io = MCS8140_PCI_HOST_BASE;
-	pcibios_min_mem = MCS8140_PCI_HOST_BASE + MCS8140_PCI_PRE_BASE;
-
-	mcs8140_data_abort_init();
-	ret = mcs8140_pci_abort_irq_init(irq);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to setup abort irq\n");
-		return ret;
-	}
-
-	pci_common_init(&mcs8140_pci);
-
-	return 0;
-}
-
-static struct of_device_id mcs8140_of_ids[] __devinitdata = {
-	{ .compatible = "moschip,mcs8140-pci" },
-	{ .compatible = "moschip,mcs814x-pci" },
-	{ /* sentinel */ },
-};
-
-static struct platform_driver mcs8140_pci_driver = {
-	.driver	= {
-		.name	= "mcs8140-pci",
-		.of_match_table = mcs8140_of_ids,
-	},
-	.probe	= mcs8140_pci_probe,
-};
-
-static int __init mcs8140_pci_init(void)
-{
-	return platform_driver_register(&mcs8140_pci_driver);
-}
-subsys_initcall(mcs8140_pci_init);
-