[POWERPC] Update mpc7448hpc2 board irq support using device tree (c4342ff9) · Commits · EulixOS / Software / Kernel

arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c

+24 −49

Original line number	Diff line number	Diff line
		/*
		* mpc7448_hpc2.c
		*
		* Board setup routines for the Freescale Taiga platform
		* Board setup routines for the Freescale mpc7448hpc2(taiga) platform
		*
		* Author: Jacob Pan
		* jacob.pan@freescale.com
		@@ -12,10 +12,10 @@
		*
		* Copyright 2004-2006 Freescale Semiconductor, 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.
		* 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/config.h>
		@@ -62,43 +62,8 @@ pci_dram_offset = MPC7448_HPC2_PCI_MEM_OFFSET;
		extern int tsi108_setup_pci(struct device_node *dev);
		extern void _nmask_and_or_msr(unsigned long nmask, unsigned long or_val);
		extern void tsi108_pci_int_init(void);
		extern int tsi108_irq_cascade(struct pt_regs regs, void unused);

		/*
		* Define all of the IRQ senses and polarities. Taken from the
		* mpc7448hpc manual.
		* Note: Likely, this table and the following function should be
		* obtained and derived from the OF Device Tree.
		*/

		static u_char mpc7448_hpc2_pic_initsenses[] __initdata = {
		/* External on-board sources */
		(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* INT[0] XINT0 from FPGA */
		(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* INT[1] XINT1 from FPGA */
		(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* INT[2] PHY_INT from both GIGE */
		(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* INT[3] RESERVED */
		/* Internal Tsi108/109 interrupt sources */
		(IRQ_SENSE_EDGE \| IRQ_POLARITY_POSITIVE), /* Reserved IRQ */
		(IRQ_SENSE_EDGE \| IRQ_POLARITY_POSITIVE), /* Reserved IRQ */
		(IRQ_SENSE_EDGE \| IRQ_POLARITY_POSITIVE), /* Reserved IRQ */
		(IRQ_SENSE_EDGE \| IRQ_POLARITY_POSITIVE), /* Reserved IRQ */
		(IRQ_SENSE_EDGE \| IRQ_POLARITY_POSITIVE), /* DMA0 */
		(IRQ_SENSE_EDGE \| IRQ_POLARITY_POSITIVE), /* DMA1 */
		(IRQ_SENSE_EDGE \| IRQ_POLARITY_POSITIVE), /* DMA2 */
		(IRQ_SENSE_EDGE \| IRQ_POLARITY_POSITIVE), /* DMA3 */
		(IRQ_SENSE_EDGE \| IRQ_POLARITY_POSITIVE), /* UART0 */
		(IRQ_SENSE_EDGE \| IRQ_POLARITY_POSITIVE), /* UART1 */
		(IRQ_SENSE_EDGE \| IRQ_POLARITY_POSITIVE), /* I2C */
		(IRQ_SENSE_EDGE \| IRQ_POLARITY_POSITIVE), /* GPIO */
		(IRQ_SENSE_LEVEL \| IRQ_POLARITY_POSITIVE), /* GIGE0 */
		(IRQ_SENSE_LEVEL \| IRQ_POLARITY_POSITIVE), /* GIGE1 */
		(IRQ_SENSE_EDGE \| IRQ_POLARITY_POSITIVE), /* Reserved IRQ */
		(IRQ_SENSE_EDGE \| IRQ_POLARITY_POSITIVE), /* HLP */
		(IRQ_SENSE_EDGE \| IRQ_POLARITY_POSITIVE), /* SDC */
		(IRQ_SENSE_EDGE \| IRQ_POLARITY_POSITIVE), /* Processor IF */
		(IRQ_SENSE_EDGE \| IRQ_POLARITY_POSITIVE), /* Reserved IRQ */
		(IRQ_SENSE_LEVEL \| IRQ_POLARITY_POSITIVE), /* PCI/X block */
		};
		extern void tsi108_irq_cascade(unsigned int irq, struct irq_desc *desc,
		struct pt_regs *regs);

		int mpc7448_hpc2_exclude_device(u_char bus, u_char devfn)
		{
		@@ -229,6 +194,8 @@ static void __init mpc7448_hpc2_init_IRQ(void)
		{
		struct mpic *mpic;
		phys_addr_t mpic_paddr = 0;
		unsigned int cascade_pci_irq;
		struct device_node *tsi_pci;
		struct device_node *tsi_pic;

		tsi_pic = of_find_node_by_type(NULL, "open-pic");
		@@ -246,24 +213,31 @@ static void __init mpc7448_hpc2_init_IRQ(void)
		DBG("%s: tsi108pic phys_addr = 0x%x\n", __FUNCTION__,
		(u32) mpic_paddr);

		mpic = mpic_alloc(mpic_paddr,
		mpic = mpic_alloc(tsi_pic, mpic_paddr,
		MPIC_PRIMARY \| MPIC_BIG_ENDIAN \| MPIC_WANTS_RESET \|
		MPIC_SPV_EOI \| MPIC_MOD_ID(MPIC_ID_TSI108),
		0, /* num_sources used */
		TSI108_IRQ_BASE,
		0, /* num_sources used */
		NR_IRQS - 4 /* XXXX */,
		mpc7448_hpc2_pic_initsenses,
		sizeof(mpc7448_hpc2_pic_initsenses), "Tsi108_PIC");
		"Tsi108_PIC");

		BUG_ON(mpic == NULL); /* XXXX */

		mpic_init(mpic);
		mpic_setup_cascade(IRQ_TSI108_PCI, tsi108_irq_cascade, mpic);

		tsi_pci = of_find_node_by_type(NULL, "pci");
		if (tsi_pci == 0) {
		printk("%s: No tsi108 pci node found !\n", __FUNCTION__);
		return;
		}

		cascade_pci_irq = irq_of_parse_and_map(tsi_pci, 0);
		set_irq_data(cascade_pci_irq, mpic);
		set_irq_chained_handler(cascade_pci_irq, tsi108_irq_cascade);

		tsi108_pci_int_init();

		/* Configure MPIC outputs to CPU0 */
		tsi108_write_reg(TSI108_MPIC_OFFSET + 0x30c, 0);
		of_node_put(tsi_pic);
		}

		void mpc7448_hpc2_show_cpuinfo(struct seq_file *m)
		@@ -320,6 +294,7 @@ static int mpc7448_machine_check_exception(struct pt_regs *regs)
		return 0;

		}

		define_machine(mpc7448_hpc2){
		.name = "MPC7448 HPC2",
		.probe = mpc7448_hpc2_probe,

arch/powerpc/sysdev/tsi108_dev.c

+6 −4

Original line number	Diff line number	Diff line
		@@ -93,13 +93,15 @@ static int __init tsi108_eth_of_init(void)
		goto err;

		r[1].name = "tx";
		r[1].start = np->intrs[0].line;
		r[1].end = np->intrs[0].line;
		r[1].start = irq_of_parse_and_map(np, 0);
		r[1].end = irq_of_parse_and_map(np, 0);
		r[1].flags = IORESOURCE_IRQ;
		DBG("%s: name:start->end = %s:0x%lx-> 0x%lx\n",
		__FUNCTION__,r[1].name, r[1].start, r[1].end);

		tsi_eth_dev =
		platform_device_register_simple("tsi-ethernet", i, &r[0],
		np->n_intrs + 1);
		1);

		if (IS_ERR(tsi_eth_dev)) {
		ret = PTR_ERR(tsi_eth_dev);
		@@ -127,7 +129,7 @@ static int __init tsi108_eth_of_init(void)
		tsi_eth_data.regs = r[0].start;
		tsi_eth_data.phyregs = res.start;
		tsi_eth_data.phy = *phy_id;
		tsi_eth_data.irq_num = np->intrs[0].line;
		tsi_eth_data.irq_num = irq_of_parse_and_map(np, 0);
		of_node_put(phy);
		ret =
		platform_device_add_data(tsi_eth_dev, &tsi_eth_data,

arch/powerpc/sysdev/tsi108_pci.c

+12 −9

Original line number	Diff line number	Diff line
		@@ -26,7 +26,6 @@
		#include <linux/irq.h>
		#include <linux/interrupt.h>


		#include <asm/byteorder.h>
		#include <asm/io.h>
		#include <asm/irq.h>
		@@ -228,7 +227,7 @@ int __init tsi108_setup_pci(struct device_node *dev)

		(hose)->ops = &tsi108_direct_pci_ops;

		printk(KERN_INFO "Found tsi108 PCI host bridge at 0x%08lx. "
		printk(KERN_INFO "Found tsi108 PCI host bridge at 0x%08x. "
		"Firmware bus number: %d->%d\n",
		rsrc.start, hose->first_busno, hose->last_busno);

		@@ -278,7 +277,7 @@ static void init_pci_source(void)
		mb();
		}

		static inline int get_pci_source(void)
		static inline unsigned int get_pci_source(void)
		{
		u_int temp = 0;
		int irq = -1;
		@@ -371,12 +370,12 @@ static void tsi108_pci_irq_end(u_int irq)
		* Interrupt controller descriptor for cascaded PCI interrupt controller.
		*/

		struct hw_interrupt_type tsi108_pci_irq = {
		static struct irq_chip tsi108_pci_irq = {
		.typename = "tsi108_PCI_int",
		.enable = tsi108_pci_irq_enable,
		.disable = tsi108_pci_irq_disable,
		.mask = tsi108_pci_irq_disable,
		.ack = tsi108_pci_irq_ack,
		.end = tsi108_pci_irq_end,
		.unmask = tsi108_pci_irq_enable,
		};

		/*
		@@ -399,14 +398,18 @@ void __init tsi108_pci_int_init(void)
		DBG("Tsi108_pci_int_init: initializing PCI interrupts\n");

		for (i = 0; i < NUM_PCI_IRQS; i++) {
		irq_desc[i + IRQ_PCI_INTAD_BASE].handler = &tsi108_pci_irq;
		irq_desc[i + IRQ_PCI_INTAD_BASE].chip = &tsi108_pci_irq;
		irq_desc[i + IRQ_PCI_INTAD_BASE].status \|= IRQ_LEVEL;
		}

		init_pci_source();
		}

		int tsi108_irq_cascade(struct pt_regs regs, void unused)
		void tsi108_irq_cascade(unsigned int irq, struct irq_desc *desc,
		struct pt_regs *regs)
		{
		return get_pci_source();
		unsigned int cascade_irq = get_pci_source();
		if (cascade_irq != NO_IRQ)
		generic_handle_irq(cascade_irq, regs);
		desc->chip->eoi(irq);
		}

include/asm-powerpc/tsi108.h

+8 −6

Original line number	Diff line number	Diff line
		/*
		* include/asm-ppc/tsi108.h
		*
		* common routine and memory layout for Tundra TSI108(Grendel) host bridge
		* memory controller.
		*
		* Author: Jacob Pan (jacob.pan@freescale.com)
		* Alex Bounine (alexandreb@tundra.com)
		* 2004 (c) Freescale Semiconductor 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.
		*
		* Copyright 2004-2006 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.
		*/

		#ifndef __PPC_KERNEL_TSI108_H
		#define __PPC_KERNEL_TSI108_H

include/asm-powerpc/tsi108_irq.h

0 → 100644

+124 −0

Original line number	Diff line number	Diff line
		/*
		* (C) Copyright 2005 Tundra Semiconductor Corp.
		* Alex Bounine, <alexandreb at tundra.com).
		*
		* See file CREDITS for list of people who contributed to this
		* project.
		*
		* 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 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
		*/

		/*
		* definitions for interrupt controller initialization and external interrupt
		* demultiplexing on TSI108EMU/SVB boards.
		*/

		#ifndef _ASM_PPC_TSI108_IRQ_H
		#define _ASM_PPC_TSI108_IRQ_H

		/*
		* Tsi108 interrupts
		*/
		#ifndef TSI108_IRQ_REG_BASE
		#define TSI108_IRQ_REG_BASE 0
		#endif

		#define TSI108_IRQ(x) (TSI108_IRQ_REG_BASE + (x))

		#define TSI108_MAX_VECTORS (36 + 4) /* 36 sources + PCI INT demux */
		#define MAX_TASK_PRIO 0xF

		#define TSI108_IRQ_SPURIOUS (TSI108_MAX_VECTORS)

		#define DEFAULT_PRIO_LVL 10 /* initial priority level */

		/* Interrupt vectors assignment to external and internal
		* sources of requests. */

		/* EXTERNAL INTERRUPT SOURCES */

		#define IRQ_TSI108_EXT_INT0 TSI108_IRQ(0) /* External Source at INT[0] */
		#define IRQ_TSI108_EXT_INT1 TSI108_IRQ(1) /* External Source at INT[1] */
		#define IRQ_TSI108_EXT_INT2 TSI108_IRQ(2) /* External Source at INT[2] */
		#define IRQ_TSI108_EXT_INT3 TSI108_IRQ(3) /* External Source at INT[3] */

		/* INTERNAL INTERRUPT SOURCES */

		#define IRQ_TSI108_RESERVED0 TSI108_IRQ(4) /* Reserved IRQ */
		#define IRQ_TSI108_RESERVED1 TSI108_IRQ(5) /* Reserved IRQ */
		#define IRQ_TSI108_RESERVED2 TSI108_IRQ(6) /* Reserved IRQ */
		#define IRQ_TSI108_RESERVED3 TSI108_IRQ(7) /* Reserved IRQ */
		#define IRQ_TSI108_DMA0 TSI108_IRQ(8) /* DMA0 */
		#define IRQ_TSI108_DMA1 TSI108_IRQ(9) /* DMA1 */
		#define IRQ_TSI108_DMA2 TSI108_IRQ(10) /* DMA2 */
		#define IRQ_TSI108_DMA3 TSI108_IRQ(11) /* DMA3 */
		#define IRQ_TSI108_UART0 TSI108_IRQ(12) /* UART0 */
		#define IRQ_TSI108_UART1 TSI108_IRQ(13) /* UART1 */
		#define IRQ_TSI108_I2C TSI108_IRQ(14) /* I2C */
		#define IRQ_TSI108_GPIO TSI108_IRQ(15) /* GPIO */
		#define IRQ_TSI108_GIGE0 TSI108_IRQ(16) /* GIGE0 */
		#define IRQ_TSI108_GIGE1 TSI108_IRQ(17) /* GIGE1 */
		#define IRQ_TSI108_RESERVED4 TSI108_IRQ(18) /* Reserved IRQ */
		#define IRQ_TSI108_HLP TSI108_IRQ(19) /* HLP */
		#define IRQ_TSI108_SDRAM TSI108_IRQ(20) /* SDC */
		#define IRQ_TSI108_PROC_IF TSI108_IRQ(21) /* Processor IF */
		#define IRQ_TSI108_RESERVED5 TSI108_IRQ(22) /* Reserved IRQ */
		#define IRQ_TSI108_PCI TSI108_IRQ(23) /* PCI/X block */

		#define IRQ_TSI108_MBOX0 TSI108_IRQ(24) /* Mailbox 0 register */
		#define IRQ_TSI108_MBOX1 TSI108_IRQ(25) /* Mailbox 1 register */
		#define IRQ_TSI108_MBOX2 TSI108_IRQ(26) /* Mailbox 2 register */
		#define IRQ_TSI108_MBOX3 TSI108_IRQ(27) /* Mailbox 3 register */

		#define IRQ_TSI108_DBELL0 TSI108_IRQ(28) /* Doorbell 0 */
		#define IRQ_TSI108_DBELL1 TSI108_IRQ(29) /* Doorbell 1 */
		#define IRQ_TSI108_DBELL2 TSI108_IRQ(30) /* Doorbell 2 */
		#define IRQ_TSI108_DBELL3 TSI108_IRQ(31) /* Doorbell 3 */

		#define IRQ_TSI108_TIMER0 TSI108_IRQ(32) /* Global Timer 0 */
		#define IRQ_TSI108_TIMER1 TSI108_IRQ(33) /* Global Timer 1 */
		#define IRQ_TSI108_TIMER2 TSI108_IRQ(34) /* Global Timer 2 */
		#define IRQ_TSI108_TIMER3 TSI108_IRQ(35) /* Global Timer 3 */

		/*
		* PCI bus INTA# - INTD# lines demultiplexor
		*/
		#define IRQ_PCI_INTAD_BASE TSI108_IRQ(36)
		#define IRQ_PCI_INTA (IRQ_PCI_INTAD_BASE + 0)
		#define IRQ_PCI_INTB (IRQ_PCI_INTAD_BASE + 1)
		#define IRQ_PCI_INTC (IRQ_PCI_INTAD_BASE + 2)
		#define IRQ_PCI_INTD (IRQ_PCI_INTAD_BASE + 3)
		#define NUM_PCI_IRQS (4)

		/* number of entries in vector dispatch table */
		#define IRQ_TSI108_TAB_SIZE (TSI108_MAX_VECTORS + 1)

		/* Mapping of MPIC outputs to processors' interrupt pins */

		#define IDIR_INT_OUT0 0x1
		#define IDIR_INT_OUT1 0x2
		#define IDIR_INT_OUT2 0x4
		#define IDIR_INT_OUT3 0x8

		/*---------------------------------------------------------------
		* IRQ line configuration parameters */

		/* Interrupt delivery modes */
		typedef enum {
		TSI108_IRQ_DIRECTED,
		TSI108_IRQ_DISTRIBUTED,
		} TSI108_IRQ_MODE;
		#endif /* _ASM_PPC_TSI108_IRQ_H */