[PATCH] powerpc: moved ipic code to arch/powerpc

Moved 83xx and QUICC Engine interrupt handling code into arch/powerpc
as a precursor of getting 83xx sub-arch building in arch/powerpc.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 0 insertions, 646 deletions

diff --git a/arch/ppc/syslib/ipic.c b/arch/ppc/syslib/ipic.c
deleted file mode 100644
index 8f01e0f1d84..00000000000
--- a/arch/ppc/syslib/ipic.c
+++ /dev/null
@@ -1,646 +0,0 @@
-/*
- * include/asm-ppc/ipic.c
- *
- * IPIC routines implementations.
- *
- * Copyright 2005 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/kernel.h>
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/reboot.h>
-#include <linux/slab.h>
-#include <linux/stddef.h>
-#include <linux/sched.h>
-#include <linux/signal.h>
-#include <linux/sysdev.h>
-#include <asm/irq.h>
-#include <asm/io.h>
-#include <asm/ipic.h>
-#include <asm/mpc83xx.h>
-
-#include "ipic.h"
-
-static struct ipic p_ipic;
-static struct ipic * primary_ipic;
-
-static struct ipic_info ipic_info[] = {
-	[9] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_H,
-		.prio	= IPIC_SIPRR_D,
-		.force	= IPIC_SIFCR_H,
-		.bit	= 24,
-		.prio_mask = 0,
-	},
-	[10] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_H,
-		.prio	= IPIC_SIPRR_D,
-		.force	= IPIC_SIFCR_H,
-		.bit	= 25,
-		.prio_mask = 1,
-	},
-	[11] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_H,
-		.prio	= IPIC_SIPRR_D,
-		.force	= IPIC_SIFCR_H,
-		.bit	= 26,
-		.prio_mask = 2,
-	},
-	[14] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_H,
-		.prio	= IPIC_SIPRR_D,
-		.force	= IPIC_SIFCR_H,
-		.bit	= 29,
-		.prio_mask = 5,
-	},
-	[15] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_H,
-		.prio	= IPIC_SIPRR_D,
-		.force	= IPIC_SIFCR_H,
-		.bit	= 30,
-		.prio_mask = 6,
-	},
-	[16] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_H,
-		.prio	= IPIC_SIPRR_D,
-		.force	= IPIC_SIFCR_H,
-		.bit	= 31,
-		.prio_mask = 7,
-	},
-	[17] = {
-		.pend	= IPIC_SEPNR,
-		.mask	= IPIC_SEMSR,
-		.prio	= IPIC_SMPRR_A,
-		.force	= IPIC_SEFCR,
-		.bit	= 1,
-		.prio_mask = 5,
-	},
-	[18] = {
-		.pend	= IPIC_SEPNR,
-		.mask	= IPIC_SEMSR,
-		.prio	= IPIC_SMPRR_A,
-		.force	= IPIC_SEFCR,
-		.bit	= 2,
-		.prio_mask = 6,
-	},
-	[19] = {
-		.pend	= IPIC_SEPNR,
-		.mask	= IPIC_SEMSR,
-		.prio	= IPIC_SMPRR_A,
-		.force	= IPIC_SEFCR,
-		.bit	= 3,
-		.prio_mask = 7,
-	},
-	[20] = {
-		.pend	= IPIC_SEPNR,
-		.mask	= IPIC_SEMSR,
-		.prio	= IPIC_SMPRR_B,
-		.force	= IPIC_SEFCR,
-		.bit	= 4,
-		.prio_mask = 4,
-	},
-	[21] = {
-		.pend	= IPIC_SEPNR,
-		.mask	= IPIC_SEMSR,
-		.prio	= IPIC_SMPRR_B,
-		.force	= IPIC_SEFCR,
-		.bit	= 5,
-		.prio_mask = 5,
-	},
-	[22] = {
-		.pend	= IPIC_SEPNR,
-		.mask	= IPIC_SEMSR,
-		.prio	= IPIC_SMPRR_B,
-		.force	= IPIC_SEFCR,
-		.bit	= 6,
-		.prio_mask = 6,
-	},
-	[23] = {
-		.pend	= IPIC_SEPNR,
-		.mask	= IPIC_SEMSR,
-		.prio	= IPIC_SMPRR_B,
-		.force	= IPIC_SEFCR,
-		.bit	= 7,
-		.prio_mask = 7,
-	},
-	[32] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_H,
-		.prio	= IPIC_SIPRR_A,
-		.force	= IPIC_SIFCR_H,
-		.bit	= 0,
-		.prio_mask = 0,
-	},
-	[33] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_H,
-		.prio	= IPIC_SIPRR_A,
-		.force	= IPIC_SIFCR_H,
-		.bit	= 1,
-		.prio_mask = 1,
-	},
-	[34] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_H,
-		.prio	= IPIC_SIPRR_A,
-		.force	= IPIC_SIFCR_H,
-		.bit	= 2,
-		.prio_mask = 2,
-	},
-	[35] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_H,
-		.prio	= IPIC_SIPRR_A,
-		.force	= IPIC_SIFCR_H,
-		.bit	= 3,
-		.prio_mask = 3,
-	},
-	[36] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_H,
-		.prio	= IPIC_SIPRR_A,
-		.force	= IPIC_SIFCR_H,
-		.bit	= 4,
-		.prio_mask = 4,
-	},
-	[37] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_H,
-		.prio	= IPIC_SIPRR_A,
-		.force	= IPIC_SIFCR_H,
-		.bit	= 5,
-		.prio_mask = 5,
-	},
-	[38] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_H,
-		.prio	= IPIC_SIPRR_A,
-		.force	= IPIC_SIFCR_H,
-		.bit	= 6,
-		.prio_mask = 6,
-	},
-	[39] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_H,
-		.prio	= IPIC_SIPRR_A,
-		.force	= IPIC_SIFCR_H,
-		.bit	= 7,
-		.prio_mask = 7,
-	},
-	[48] = {
-		.pend	= IPIC_SEPNR,
-		.mask	= IPIC_SEMSR,
-		.prio	= IPIC_SMPRR_A,
-		.force	= IPIC_SEFCR,
-		.bit	= 0,
-		.prio_mask = 4,
-	},
-	[64] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= IPIC_SMPRR_A,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 0,
-		.prio_mask = 0,
-	},
-	[65] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= IPIC_SMPRR_A,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 1,
-		.prio_mask = 1,
-	},
-	[66] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= IPIC_SMPRR_A,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 2,
-		.prio_mask = 2,
-	},
-	[67] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= IPIC_SMPRR_A,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 3,
-		.prio_mask = 3,
-	},
-	[68] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= IPIC_SMPRR_B,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 4,
-		.prio_mask = 0,
-	},
-	[69] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= IPIC_SMPRR_B,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 5,
-		.prio_mask = 1,
-	},
-	[70] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= IPIC_SMPRR_B,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 6,
-		.prio_mask = 2,
-	},
-	[71] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= IPIC_SMPRR_B,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 7,
-		.prio_mask = 3,
-	},
-	[72] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= 0,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 8,
-	},
-	[73] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= 0,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 9,
-	},
-	[74] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= 0,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 10,
-	},
-	[75] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= 0,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 11,
-	},
-	[76] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= 0,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 12,
-	},
-	[77] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= 0,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 13,
-	},
-	[78] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= 0,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 14,
-	},
-	[79] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= 0,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 15,
-	},
-	[80] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= 0,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 16,
-	},
-	[84] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= 0,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 20,
-	},
-	[85] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= 0,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 21,
-	},
-	[90] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= 0,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 26,
-	},
-	[91] = {
-		.pend	= IPIC_SIPNR_H,
-		.mask	= IPIC_SIMSR_L,
-		.prio	= 0,
-		.force	= IPIC_SIFCR_L,
-		.bit	= 27,
-	},
-};
-
-static inline u32 ipic_read(volatile u32 __iomem *base, unsigned int reg)
-{
-	return in_be32(base + (reg >> 2));
-}
-
-static inline void ipic_write(volatile u32 __iomem *base, unsigned int reg, u32 value)
-{
-	out_be32(base + (reg >> 2), value);
-}
-
-static inline struct ipic * ipic_from_irq(unsigned int irq)
-{
-	return primary_ipic;
-}
-
-static void ipic_enable_irq(unsigned int irq)
-{
-	struct ipic *ipic = ipic_from_irq(irq);
-	unsigned int src = irq - ipic->irq_offset;
-	u32 temp;
-
-	temp = ipic_read(ipic->regs, ipic_info[src].mask);
-	temp |= (1 << (31 - ipic_info[src].bit));
-	ipic_write(ipic->regs, ipic_info[src].mask, temp);
-}
-
-static void ipic_disable_irq(unsigned int irq)
-{
-	struct ipic *ipic = ipic_from_irq(irq);
-	unsigned int src = irq - ipic->irq_offset;
-	u32 temp;
-
-	temp = ipic_read(ipic->regs, ipic_info[src].mask);
-	temp &= ~(1 << (31 - ipic_info[src].bit));
-	ipic_write(ipic->regs, ipic_info[src].mask, temp);
-}
-
-static void ipic_disable_irq_and_ack(unsigned int irq)
-{
-	struct ipic *ipic = ipic_from_irq(irq);
-	unsigned int src = irq - ipic->irq_offset;
-	u32 temp;
-
-	ipic_disable_irq(irq);
-
-	temp = ipic_read(ipic->regs, ipic_info[src].pend);
-	temp |= (1 << (31 - ipic_info[src].bit));
-	ipic_write(ipic->regs, ipic_info[src].pend, temp);
-}
-
-static void ipic_end_irq(unsigned int irq)
-{
-	if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
-		ipic_enable_irq(irq);
-}
-
-struct hw_interrupt_type ipic = {
-	.typename = " IPIC  ",
-	.enable = ipic_enable_irq,
-	.disable = ipic_disable_irq,
-	.ack = ipic_disable_irq_and_ack,
-	.end = ipic_end_irq,
-};
-
-void __init ipic_init(phys_addr_t phys_addr,
-		unsigned int flags,
-		unsigned int irq_offset,
-		unsigned char *senses,
-		unsigned int senses_count)
-{
-	u32 i, temp = 0;
-
-	primary_ipic = &p_ipic;
-	primary_ipic->regs = ioremap(phys_addr, MPC83xx_IPIC_SIZE);
-
-	primary_ipic->irq_offset = irq_offset;
-
-	ipic_write(primary_ipic->regs, IPIC_SICNR, 0x0);
-
-	/* default priority scheme is grouped. If spread mode is required
-	 * configure SICFR accordingly */
-	if (flags & IPIC_SPREADMODE_GRP_A)
-		temp |= SICFR_IPSA;
-	if (flags & IPIC_SPREADMODE_GRP_D)
-		temp |= SICFR_IPSD;
-	if (flags & IPIC_SPREADMODE_MIX_A)
-		temp |= SICFR_MPSA;
-	if (flags & IPIC_SPREADMODE_MIX_B)
-		temp |= SICFR_MPSB;
-
-	ipic_write(primary_ipic->regs, IPIC_SICNR, temp);
-
-	/* handle MCP route */
-	temp = 0;
-	if (flags & IPIC_DISABLE_MCP_OUT)
-		temp = SERCR_MCPR;
-	ipic_write(primary_ipic->regs, IPIC_SERCR, temp);
-
-	/* handle routing of IRQ0 to MCP */
-	temp = ipic_read(primary_ipic->regs, IPIC_SEMSR);
-
-	if (flags & IPIC_IRQ0_MCP)
-		temp |= SEMSR_SIRQ0;
-	else
-		temp &= ~SEMSR_SIRQ0;
-
-	ipic_write(primary_ipic->regs, IPIC_SEMSR, temp);
-
-	for (i = 0 ; i < NR_IPIC_INTS ; i++) {
-		irq_desc[i+irq_offset].handler = &ipic;
-		irq_desc[i+irq_offset].status = IRQ_LEVEL;
-	}
-
-	temp = 0;
-	for (i = 0 ; i < senses_count ; i++) {
-		if ((senses[i] & IRQ_SENSE_MASK) == IRQ_SENSE_EDGE) {
-			temp |= 1 << (15 - i);
-			if (i != 0)
-				irq_desc[i + irq_offset + MPC83xx_IRQ_EXT1 - 1].status = 0;
-			else
-				irq_desc[irq_offset + MPC83xx_IRQ_EXT0].status = 0;
-		}
-	}
-	ipic_write(primary_ipic->regs, IPIC_SECNR, temp);
-
-	printk ("IPIC (%d IRQ sources, %d External IRQs) at %p\n", NR_IPIC_INTS,
-			senses_count, primary_ipic->regs);
-}
-
-int ipic_set_priority(unsigned int irq, unsigned int priority)
-{
-	struct ipic *ipic = ipic_from_irq(irq);
-	unsigned int src = irq - ipic->irq_offset;
-	u32 temp;
-
-	if (priority > 7)
-		return -EINVAL;
-	if (src > 127)
-		return -EINVAL;
-	if (ipic_info[src].prio == 0)
-		return -EINVAL;
-
-	temp = ipic_read(ipic->regs, ipic_info[src].prio);
-
-	if (priority < 4) {
-		temp &= ~(0x7 << (20 + (3 - priority) * 3));
-		temp |= ipic_info[src].prio_mask << (20 + (3 - priority) * 3);
-	} else {
-		temp &= ~(0x7 << (4 + (7 - priority) * 3));
-		temp |= ipic_info[src].prio_mask << (4 + (7 - priority) * 3);
-	}
-
-	ipic_write(ipic->regs, ipic_info[src].prio, temp);
-
-	return 0;
-}
-
-void ipic_set_highest_priority(unsigned int irq)
-{
-	struct ipic *ipic = ipic_from_irq(irq);
-	unsigned int src = irq - ipic->irq_offset;
-	u32 temp;
-
-	temp = ipic_read(ipic->regs, IPIC_SICFR);
-
-	/* clear and set HPI */
-	temp &= 0x7f000000;
-	temp |= (src & 0x7f) << 24;
-
-	ipic_write(ipic->regs, IPIC_SICFR, temp);
-}
-
-void ipic_set_default_priority(void)
-{
-	ipic_set_priority(MPC83xx_IRQ_TSEC1_TX, 0);
-	ipic_set_priority(MPC83xx_IRQ_TSEC1_RX, 1);
-	ipic_set_priority(MPC83xx_IRQ_TSEC1_ERROR, 2);
-	ipic_set_priority(MPC83xx_IRQ_TSEC2_TX, 3);
-	ipic_set_priority(MPC83xx_IRQ_TSEC2_RX, 4);
-	ipic_set_priority(MPC83xx_IRQ_TSEC2_ERROR, 5);
-	ipic_set_priority(MPC83xx_IRQ_USB2_DR, 6);
-	ipic_set_priority(MPC83xx_IRQ_USB2_MPH, 7);
-
-	ipic_set_priority(MPC83xx_IRQ_UART1, 0);
-	ipic_set_priority(MPC83xx_IRQ_UART2, 1);
-	ipic_set_priority(MPC83xx_IRQ_SEC2, 2);
-	ipic_set_priority(MPC83xx_IRQ_IIC1, 5);
-	ipic_set_priority(MPC83xx_IRQ_IIC2, 6);
-	ipic_set_priority(MPC83xx_IRQ_SPI, 7);
-	ipic_set_priority(MPC83xx_IRQ_RTC_SEC, 0);
-	ipic_set_priority(MPC83xx_IRQ_PIT, 1);
-	ipic_set_priority(MPC83xx_IRQ_PCI1, 2);
-	ipic_set_priority(MPC83xx_IRQ_PCI2, 3);
-	ipic_set_priority(MPC83xx_IRQ_EXT0, 4);
-	ipic_set_priority(MPC83xx_IRQ_EXT1, 5);
-	ipic_set_priority(MPC83xx_IRQ_EXT2, 6);
-	ipic_set_priority(MPC83xx_IRQ_EXT3, 7);
-	ipic_set_priority(MPC83xx_IRQ_RTC_ALR, 0);
-	ipic_set_priority(MPC83xx_IRQ_MU, 1);
-	ipic_set_priority(MPC83xx_IRQ_SBA, 2);
-	ipic_set_priority(MPC83xx_IRQ_DMA, 3);
-	ipic_set_priority(MPC83xx_IRQ_EXT4, 4);
-	ipic_set_priority(MPC83xx_IRQ_EXT5, 5);
-	ipic_set_priority(MPC83xx_IRQ_EXT6, 6);
-	ipic_set_priority(MPC83xx_IRQ_EXT7, 7);
-}
-
-void ipic_enable_mcp(enum ipic_mcp_irq mcp_irq)
-{
-	struct ipic *ipic = primary_ipic;
-	u32 temp;
-
-	temp = ipic_read(ipic->regs, IPIC_SERMR);
-	temp |= (1 << (31 - mcp_irq));
-	ipic_write(ipic->regs, IPIC_SERMR, temp);
-}
-
-void ipic_disable_mcp(enum ipic_mcp_irq mcp_irq)
-{
-	struct ipic *ipic = primary_ipic;
-	u32 temp;
-
-	temp = ipic_read(ipic->regs, IPIC_SERMR);
-	temp &= (1 << (31 - mcp_irq));
-	ipic_write(ipic->regs, IPIC_SERMR, temp);
-}
-
-u32 ipic_get_mcp_status(void)
-{
-	return ipic_read(primary_ipic->regs, IPIC_SERMR);
-}
-
-void ipic_clear_mcp_status(u32 mask)
-{
-	ipic_write(primary_ipic->regs, IPIC_SERMR, mask);
-}
-
-/* Return an interrupt vector or -1 if no interrupt is pending. */
-int ipic_get_irq(struct pt_regs *regs)
-{
-	int irq;
-
-	irq = ipic_read(primary_ipic->regs, IPIC_SIVCR) & 0x7f;
-
-	if (irq == 0)    /* 0 --> no irq is pending */
-		irq = -1;
-
-	return irq;
-}
-
-static struct sysdev_class ipic_sysclass = {
-	set_kset_name("ipic"),
-};
-
-static struct sys_device device_ipic = {
-	.id		= 0,
-	.cls		= &ipic_sysclass,
-};
-
-static int __init init_ipic_sysfs(void)
-{
-	int rc;
-
-	if (!primary_ipic->regs)
-		return -ENODEV;
-	printk(KERN_DEBUG "Registering ipic with sysfs...\n");
-
-	rc = sysdev_class_register(&ipic_sysclass);
-	if (rc) {
-		printk(KERN_ERR "Failed registering ipic sys class\n");
-		return -ENODEV;
-	}
-	rc = sysdev_register(&device_ipic);
-	if (rc) {
-		printk(KERN_ERR "Failed registering ipic sys device\n");
-		return -ENODEV;
-	}
-	return 0;
-}
-
-subsys_initcall(init_ipic_sysfs);