[POWERPC] Move MPC52xx PIC driver into arch/powerpc/platforms/52xx

No other chips use this device, it belongs in a 52xx-specific path.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

2 files changed, 0 insertions, 539 deletions

diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile
index ee7c6d48af7..6cc34597a62 100644
--- a/arch/powerpc/sysdev/Makefile
+++ b/arch/powerpc/sysdev/Makefile
@@ -16,7 +16,6 @@ obj-$(CONFIG_MTD)		+= rom.o
 ifeq ($(CONFIG_PPC_MERGE),y)
 obj-$(CONFIG_PPC_I8259)		+= i8259.o
 obj-$(CONFIG_PPC_83xx)		+= ipic.o
-obj-$(CONFIG_PPC_MPC52xx)	+= mpc52xx_pic.o
 endif
 
 # Temporary hack until we have migrated to asm-powerpc
diff --git a/arch/powerpc/sysdev/mpc52xx_pic.c b/arch/powerpc/sysdev/mpc52xx_pic.c
deleted file mode 100644
index 6df51f04b8f..00000000000
--- a/arch/powerpc/sysdev/mpc52xx_pic.c
+++ /dev/null
@@ -1,538 +0,0 @@
-/*
- *
- * Programmable Interrupt Controller functions for the Freescale MPC52xx.
- *
- * Copyright (C) 2006 bplan GmbH
- *
- * Based on the code from the 2.4 kernel by
- * Dale Farnsworth <dfarnsworth@mvista.com> and Kent Borg.
- *
- * Copyright (C) 2004 Sylvain Munaut <tnt@246tNt.com>
- * Copyright (C) 2003 Montavista Software, Inc
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
- *
- */
-
-#undef DEBUG
-
-#include <linux/stddef.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/signal.h>
-#include <linux/stddef.h>
-#include <linux/delay.h>
-#include <linux/irq.h>
-#include <linux/hardirq.h>
-
-#include <asm/io.h>
-#include <asm/processor.h>
-#include <asm/system.h>
-#include <asm/irq.h>
-#include <asm/prom.h>
-#include <asm/mpc52xx.h>
-
-/*
- *
-*/
-
-static struct mpc52xx_intr __iomem *intr;
-static struct mpc52xx_sdma __iomem *sdma;
-static struct irq_host *mpc52xx_irqhost = NULL;
-
-static unsigned char mpc52xx_map_senses[4] = {
-	IRQ_TYPE_LEVEL_HIGH,
-	IRQ_TYPE_EDGE_RISING,
-	IRQ_TYPE_EDGE_FALLING,
-	IRQ_TYPE_LEVEL_LOW,
-};
-
-/*
- *
-*/
-
-static inline void io_be_setbit(u32 __iomem * addr, int bitno)
-{
-	out_be32(addr, in_be32(addr) | (1 << bitno));
-}
-
-static inline void io_be_clrbit(u32 __iomem * addr, int bitno)
-{
-	out_be32(addr, in_be32(addr) & ~(1 << bitno));
-}
-
-/*
- * IRQ[0-3] interrupt irq_chip
-*/
-
-static void mpc52xx_extirq_mask(unsigned int virq)
-{
-	int irq;
-	int l2irq;
-
-	irq = irq_map[virq].hwirq;
-	l2irq = (irq & MPC52xx_IRQ_L2_MASK) >> MPC52xx_IRQ_L2_OFFSET;
-
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
-	io_be_clrbit(&intr->ctrl, 11 - l2irq);
-}
-
-static void mpc52xx_extirq_unmask(unsigned int virq)
-{
-	int irq;
-	int l2irq;
-
-	irq = irq_map[virq].hwirq;
-	l2irq = (irq & MPC52xx_IRQ_L2_MASK) >> MPC52xx_IRQ_L2_OFFSET;
-
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
-	io_be_setbit(&intr->ctrl, 11 - l2irq);
-}
-
-static void mpc52xx_extirq_ack(unsigned int virq)
-{
-	int irq;
-	int l2irq;
-
-	irq = irq_map[virq].hwirq;
-	l2irq = (irq & MPC52xx_IRQ_L2_MASK) >> MPC52xx_IRQ_L2_OFFSET;
-
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
-	io_be_setbit(&intr->ctrl, 27 - l2irq);
-}
-
-static struct irq_chip mpc52xx_extirq_irqchip = {
-	.typename = " MPC52xx IRQ[0-3] ",
-	.mask = mpc52xx_extirq_mask,
-	.unmask = mpc52xx_extirq_unmask,
-	.ack = mpc52xx_extirq_ack,
-};
-
-/*
- * Main interrupt irq_chip
-*/
-
-static void mpc52xx_main_mask(unsigned int virq)
-{
-	int irq;
-	int l2irq;
-
-	irq = irq_map[virq].hwirq;
-	l2irq = (irq & MPC52xx_IRQ_L2_MASK) >> MPC52xx_IRQ_L2_OFFSET;
-
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
-	io_be_setbit(&intr->main_mask, 15 - l2irq);
-}
-
-static void mpc52xx_main_unmask(unsigned int virq)
-{
-	int irq;
-	int l2irq;
-
-	irq = irq_map[virq].hwirq;
-	l2irq = (irq & MPC52xx_IRQ_L2_MASK) >> MPC52xx_IRQ_L2_OFFSET;
-
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
-	io_be_clrbit(&intr->main_mask, 15 - l2irq);
-}
-
-static struct irq_chip mpc52xx_main_irqchip = {
-	.typename = "MPC52xx Main",
-	.mask = mpc52xx_main_mask,
-	.mask_ack = mpc52xx_main_mask,
-	.unmask = mpc52xx_main_unmask,
-};
-
-/*
- * Peripherals interrupt irq_chip
-*/
-
-static void mpc52xx_periph_mask(unsigned int virq)
-{
-	int irq;
-	int l2irq;
-
-	irq = irq_map[virq].hwirq;
-	l2irq = (irq & MPC52xx_IRQ_L2_MASK) >> MPC52xx_IRQ_L2_OFFSET;
-
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
-	io_be_setbit(&intr->per_mask, 31 - l2irq);
-}
-
-static void mpc52xx_periph_unmask(unsigned int virq)
-{
-	int irq;
-	int l2irq;
-
-	irq = irq_map[virq].hwirq;
-	l2irq = (irq & MPC52xx_IRQ_L2_MASK) >> MPC52xx_IRQ_L2_OFFSET;
-
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
-	io_be_clrbit(&intr->per_mask, 31 - l2irq);
-}
-
-static struct irq_chip mpc52xx_periph_irqchip = {
-	.typename = "MPC52xx Peripherals",
-	.mask = mpc52xx_periph_mask,
-	.mask_ack = mpc52xx_periph_mask,
-	.unmask = mpc52xx_periph_unmask,
-};
-
-/*
- * SDMA interrupt irq_chip
-*/
-
-static void mpc52xx_sdma_mask(unsigned int virq)
-{
-	int irq;
-	int l2irq;
-
-	irq = irq_map[virq].hwirq;
-	l2irq = (irq & MPC52xx_IRQ_L2_MASK) >> MPC52xx_IRQ_L2_OFFSET;
-
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
-	io_be_setbit(&sdma->IntMask, l2irq);
-}
-
-static void mpc52xx_sdma_unmask(unsigned int virq)
-{
-	int irq;
-	int l2irq;
-
-	irq = irq_map[virq].hwirq;
-	l2irq = (irq & MPC52xx_IRQ_L2_MASK) >> MPC52xx_IRQ_L2_OFFSET;
-
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
-	io_be_clrbit(&sdma->IntMask, l2irq);
-}
-
-static void mpc52xx_sdma_ack(unsigned int virq)
-{
-	int irq;
-	int l2irq;
-
-	irq = irq_map[virq].hwirq;
-	l2irq = (irq & MPC52xx_IRQ_L2_MASK) >> MPC52xx_IRQ_L2_OFFSET;
-
-	pr_debug("%s: irq=%x. l2=%d\n", __func__, irq, l2irq);
-
-	out_be32(&sdma->IntPend, 1 << l2irq);
-}
-
-static struct irq_chip mpc52xx_sdma_irqchip = {
-	.typename = "MPC52xx SDMA",
-	.mask = mpc52xx_sdma_mask,
-	.unmask = mpc52xx_sdma_unmask,
-	.ack = mpc52xx_sdma_ack,
-};
-
-/*
- * irq_host
-*/
-
-static int mpc52xx_irqhost_match(struct irq_host *h, struct device_node *node)
-{
-	pr_debug("%s: node=%p\n", __func__, node);
-	return mpc52xx_irqhost->host_data == node;
-}
-
-static int mpc52xx_irqhost_xlate(struct irq_host *h, struct device_node *ct,
-				 u32 * intspec, unsigned int intsize,
-				 irq_hw_number_t * out_hwirq,
-				 unsigned int *out_flags)
-{
-	int intrvect_l1;
-	int intrvect_l2;
-	int intrvect_type;
-	int intrvect_linux;
-
-	if (intsize != 3)
-		return -1;
-
-	intrvect_l1 = (int)intspec[0];
-	intrvect_l2 = (int)intspec[1];
-	intrvect_type = (int)intspec[2];
-
-	intrvect_linux =
-	    (intrvect_l1 << MPC52xx_IRQ_L1_OFFSET) & MPC52xx_IRQ_L1_MASK;
-	intrvect_linux |=
-	    (intrvect_l2 << MPC52xx_IRQ_L2_OFFSET) & 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];
-
-	return 0;
-}
-
-/*
- * this function retrieves the correct IRQ type out
- * of the MPC regs
- * Only externals IRQs needs 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];
-}
-
-static int mpc52xx_irqhost_map(struct irq_host *h, unsigned int virq,
-			       irq_hw_number_t irq)
-{
-	int l1irq;
-	int l2irq;
-	struct irq_chip *good_irqchip;
-	void *good_handle;
-	int type;
-
-	l1irq = (irq & MPC52xx_IRQ_L1_MASK) >> MPC52xx_IRQ_L1_OFFSET;
-	l2irq = (irq & MPC52xx_IRQ_L2_MASK) >> MPC52xx_IRQ_L2_OFFSET;
-
-	/*
-	 * Most of ours IRQs will be level low
-	 * Only external IRQs on some platform may be others
-	 */
-	type = IRQ_TYPE_LEVEL_LOW;
-
-	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;
-
-	default:
-		pr_debug("%s: Error, unknown L1 IRQ (0x%x)\n", __func__, l1irq);
-		printk(KERN_ERR "Unknow IRQ!\n");
-		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);
-
-	return 0;
-}
-
-static struct irq_host_ops mpc52xx_irqhost_ops = {
-	.match = mpc52xx_irqhost_match,
-	.xlate = mpc52xx_irqhost_xlate,
-	.map = mpc52xx_irqhost_map,
-};
-
-/*
- * init (public)
-*/
-
-void __init mpc52xx_init_irq(void)
-{
-	struct device_node *picnode = NULL;
-	int picnode_regsize;
-	u32 picnode_regoffset;
-
-	struct device_node *sdmanode = NULL;
-	int sdmanode_regsize;
-	u32 sdmanode_regoffset;
-
-	u64 size64;
-	int flags;
-
-	u32 intr_ctrl;
-
-	picnode = of_find_compatible_node(NULL, "interrupt-controller",
-						"mpc5200-pic");
-	if (picnode == NULL) {
-		printk(KERN_ERR "MPC52xx PIC: "
-			"Unable to find the interrupt controller "
-			"in the OpenFirmware device tree\n");
-		goto end;
-	}
-
-	sdmanode = of_find_compatible_node(NULL, "dma-controller",
-						 "mpc5200-bestcomm");
-	if (sdmanode == NULL) {
-		printk(KERN_ERR "MPC52xx PIC"
-			"Unable to find the Bestcomm DMA controller device "
-			"in the OpenFirmware device tree\n");
-		goto end;
-	}
-
-	/* Retrieve PIC ressources */
-	picnode_regoffset = (u32) of_get_address(picnode, 0, &size64, &flags);
-	if (picnode_regoffset == 0) {
-		printk(KERN_ERR "MPC52xx PIC"
-			"Unable to get the interrupt controller address\n");
-		goto end;
-	}
-
-	picnode_regoffset =
-		of_translate_address(picnode, (u32 *) picnode_regoffset);
-	picnode_regsize = (int)size64;
-
-	/* Retrieve SDMA ressources */
-	sdmanode_regoffset = (u32) of_get_address(sdmanode, 0, &size64, &flags);
-	if (sdmanode_regoffset == 0) {
-		printk(KERN_ERR "MPC52xx PIC: "
-			"Unable to get the Bestcomm DMA controller address\n");
-		goto end;
-	}
-
-	sdmanode_regoffset =
-	    of_translate_address(sdmanode, (u32 *) sdmanode_regoffset);
-	sdmanode_regsize = (int)size64;
-
-	/* Remap the necessary zones */
-	intr = ioremap(picnode_regoffset, picnode_regsize);
-	if (intr == NULL) {
-		printk(KERN_ERR "MPC52xx PIC: "
-			"Unable to ioremap interrupt controller registers!\n");
-		goto end;
-	}
-
-	sdma = ioremap(sdmanode_regoffset, sdmanode_regsize);
-	if (sdma == NULL) {
-		iounmap(intr);
-		printk(KERN_ERR "MPC52xx PIC: "
-			"Unable to ioremap Bestcomm DMA registers!\n");
-		goto end;
-	}
-
-	printk(KERN_INFO "MPC52xx PIC: MPC52xx PIC Remapped at 0x%8.8x\n",
-		picnode_regoffset);
-	printk(KERN_INFO "MPC52xx PIC: MPC52xx SDMA Remapped at 0x%8.8x\n",
-		sdmanode_regoffset);
-
-	/* Disable all interrupt sources. */
-	out_be32(&sdma->IntPend, 0xffffffff);	/* 1 means clear pending */
-	out_be32(&sdma->IntMask, 0xffffffff);	/* 1 means disabled */
-	out_be32(&intr->per_mask, 0x7ffffc00);	/* 1 means disabled */
-	out_be32(&intr->main_mask, 0x00010fff);	/* 1 means disabled */
-	intr_ctrl = in_be32(&intr->ctrl);
-	intr_ctrl &= 0x00ff0000;	/* Keeps IRQ[0-3] config */
-	intr_ctrl |=	0x0f000000 |	/* clear IRQ 0-3 */
-			0x00001000 |	/* MEE master external enable */
-			0x00000000 |	/* 0 means disable IRQ 0-3 */
-			0x00000001;	/* CEb route critical normally */
-	out_be32(&intr->ctrl, intr_ctrl);
-
-	/* Zero a bunch of the priority settings. */
-	out_be32(&intr->per_pri1, 0);
-	out_be32(&intr->per_pri2, 0);
-	out_be32(&intr->per_pri3, 0);
-	out_be32(&intr->main_pri1, 0);
-	out_be32(&intr->main_pri2, 0);
-
-	/*
-	 * As last step, add an irq host to translate the real
-	 * hw irq information provided by the ofw to linux virq
-	 */
-
-	mpc52xx_irqhost =
-	    irq_alloc_host(IRQ_HOST_MAP_LINEAR, MPC52xx_IRQ_HIGHTESTHWIRQ,
-			   &mpc52xx_irqhost_ops, -1);
-
-	if (mpc52xx_irqhost) {
-		mpc52xx_irqhost->host_data = picnode;
-		printk(KERN_INFO "MPC52xx PIC is up and running!\n");
-	} else {
-		printk(KERN_ERR
-			"MPC52xx PIC: Unable to allocate the IRQ host\n");
-	}
-
-end:
-	of_node_put(picnode);
-	of_node_put(sdmanode);
-}
-
-/*
- * get_irq (public)
-*/
-unsigned int mpc52xx_get_irq(void)
-{
-	u32 status;
-	int irq = NO_IRQ_IGNORE;
-
-	status = in_be32(&intr->enc_status);
-	if (status & 0x00000400) {	/* critical */
-		irq = (status >> 8) & 0x3;
-		if (irq == 2)	/* high priority peripheral */
-			goto peripheral;
-		irq |=	(MPC52xx_IRQ_L1_CRIT << MPC52xx_IRQ_L1_OFFSET) &
-			MPC52xx_IRQ_L1_MASK;
-	} else if (status & 0x00200000) {	/* main */
-		irq = (status >> 16) & 0x1f;
-		if (irq == 4)	/* low priority peripheral */
-			goto peripheral;
-		irq |=	(MPC52xx_IRQ_L1_MAIN << MPC52xx_IRQ_L1_OFFSET) &
-			MPC52xx_IRQ_L1_MASK;
-	} else if (status & 0x20000000) {	/* peripheral */
-	      peripheral:
-		irq = (status >> 24) & 0x1f;
-		if (irq == 0) {	/* bestcomm */
-			status = in_be32(&sdma->IntPend);
-			irq = ffs(status) - 1;
-			irq |=	(MPC52xx_IRQ_L1_SDMA << MPC52xx_IRQ_L1_OFFSET) &
-				MPC52xx_IRQ_L1_MASK;
-		} else
-			irq |=	(MPC52xx_IRQ_L1_PERP << MPC52xx_IRQ_L1_OFFSET) &
-				MPC52xx_IRQ_L1_MASK;
-	}
-
-	pr_debug("%s: irq=%x. virq=%d\n", __func__, irq,
-		 irq_linear_revmap(mpc52xx_irqhost, irq));
-
-	return irq_linear_revmap(mpc52xx_irqhost, irq);
-}
-