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-rw-r--r--arch/mips/boot/.gitignore6
-rw-r--r--arch/mips/include/asm/pmc-sierra/msp71xx/msp_slp_int.h141
-rw-r--r--arch/mips/kernel/.gitignore1
-rw-r--r--arch/mips/pmc-sierra/msp71xx/msp_irq_slp.c107
4 files changed, 255 insertions, 0 deletions
diff --git a/arch/mips/boot/.gitignore b/arch/mips/boot/.gitignore
new file mode 100644
index 0000000..f210b09
--- /dev/null
+++ b/arch/mips/boot/.gitignore
@@ -0,0 +1,6 @@
+mkboot
+elf2ecoff
+vmlinux.*
+zImage
+zImage.tmp
+calc_vmlinuz_load_addr
diff --git a/arch/mips/include/asm/pmc-sierra/msp71xx/msp_slp_int.h b/arch/mips/include/asm/pmc-sierra/msp71xx/msp_slp_int.h
new file mode 100644
index 0000000..96d4c8c
--- /dev/null
+++ b/arch/mips/include/asm/pmc-sierra/msp71xx/msp_slp_int.h
@@ -0,0 +1,141 @@
+/*
+ * Defines for the MSP interrupt controller.
+ *
+ * Copyright (C) 1999 MIPS Technologies, Inc. All rights reserved.
+ * Author: Carsten Langgaard, carstenl@mips.com
+ *
+ * ########################################################################
+ *
+ * This program is free software; you can distribute 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 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.
+ *
+ * ########################################################################
+ */
+
+#ifndef _MSP_SLP_INT_H
+#define _MSP_SLP_INT_H
+
+/*
+ * The PMC-Sierra SLP interrupts are arranged in a 3 level cascaded
+ * hierarchical system. The first level are the direct MIPS interrupts
+ * and are assigned the interrupt range 0-7. The second level is the SLM
+ * interrupt controller and is assigned the range 8-39. The third level
+ * comprises the Peripherial block, the PCI block, the PCI MSI block and
+ * the SLP. The PCI interrupts and the SLP errors are handled by the
+ * relevant subsystems so the core interrupt code needs only concern
+ * itself with the Peripheral block. These are assigned interrupts in
+ * the range 40-71.
+ */
+
+/*
+ * IRQs directly connected to CPU
+ */
+#define MSP_MIPS_INTBASE 0
+#define MSP_INT_SW0 0 /* IRQ for swint0, C_SW0 */
+#define MSP_INT_SW1 1 /* IRQ for swint1, C_SW1 */
+#define MSP_INT_MAC0 2 /* IRQ for MAC 0, C_IRQ0 */
+#define MSP_INT_MAC1 3 /* IRQ for MAC 1, C_IRQ1 */
+#define MSP_INT_C_IRQ2 4 /* Wired off, C_IRQ2 */
+#define MSP_INT_VE 5 /* IRQ for Voice Engine, C_IRQ3 */
+#define MSP_INT_SLP 6 /* IRQ for SLM block, C_IRQ4 */
+#define MSP_INT_TIMER 7 /* IRQ for the MIPS timer, C_IRQ5 */
+
+/*
+ * IRQs cascaded on CPU interrupt 4 (CAUSE bit 12, C_IRQ4)
+ * These defines should be tied to the register definition for the SLM
+ * interrupt routine. For now, just use hard-coded values.
+ */
+#define MSP_SLP_INTBASE (MSP_MIPS_INTBASE + 8)
+#define MSP_INT_EXT0 (MSP_SLP_INTBASE + 0)
+ /* External interrupt 0 */
+#define MSP_INT_EXT1 (MSP_SLP_INTBASE + 1)
+ /* External interrupt 1 */
+#define MSP_INT_EXT2 (MSP_SLP_INTBASE + 2)
+ /* External interrupt 2 */
+#define MSP_INT_EXT3 (MSP_SLP_INTBASE + 3)
+ /* External interrupt 3 */
+/* Reserved 4-7 */
+
+/*
+ *************************************************************************
+ * DANGER/DANGER/DANGER/DANGER/DANGER/DANGER/DANGER/DANGER/DANGER/DANGER *
+ * Some MSP produces have this interrupt labelled as Voice and some are *
+ * SEC mbox ... *
+ *************************************************************************
+ */
+#define MSP_INT_SLP_VE (MSP_SLP_INTBASE + 8)
+ /* Cascaded IRQ for Voice Engine*/
+#define MSP_INT_SLP_TDM (MSP_SLP_INTBASE + 9)
+ /* TDM interrupt */
+#define MSP_INT_SLP_MAC0 (MSP_SLP_INTBASE + 10)
+ /* Cascaded IRQ for MAC 0 */
+#define MSP_INT_SLP_MAC1 (MSP_SLP_INTBASE + 11)
+ /* Cascaded IRQ for MAC 1 */
+#define MSP_INT_SEC (MSP_SLP_INTBASE + 12)
+ /* IRQ for security engine */
+#define MSP_INT_PER (MSP_SLP_INTBASE + 13)
+ /* Peripheral interrupt */
+#define MSP_INT_TIMER0 (MSP_SLP_INTBASE + 14)
+ /* SLP timer 0 */
+#define MSP_INT_TIMER1 (MSP_SLP_INTBASE + 15)
+ /* SLP timer 1 */
+#define MSP_INT_TIMER2 (MSP_SLP_INTBASE + 16)
+ /* SLP timer 2 */
+#define MSP_INT_SLP_TIMER (MSP_SLP_INTBASE + 17)
+ /* Cascaded MIPS timer */
+#define MSP_INT_BLKCP (MSP_SLP_INTBASE + 18)
+ /* Block Copy */
+#define MSP_INT_UART0 (MSP_SLP_INTBASE + 19)
+ /* UART 0 */
+#define MSP_INT_PCI (MSP_SLP_INTBASE + 20)
+ /* PCI subsystem */
+#define MSP_INT_PCI_DBELL (MSP_SLP_INTBASE + 21)
+ /* PCI doorbell */
+#define MSP_INT_PCI_MSI (MSP_SLP_INTBASE + 22)
+ /* PCI Message Signal */
+#define MSP_INT_PCI_BC0 (MSP_SLP_INTBASE + 23)
+ /* PCI Block Copy 0 */
+#define MSP_INT_PCI_BC1 (MSP_SLP_INTBASE + 24)
+ /* PCI Block Copy 1 */
+#define MSP_INT_SLP_ERR (MSP_SLP_INTBASE + 25)
+ /* SLP error condition */
+#define MSP_INT_MAC2 (MSP_SLP_INTBASE + 26)
+ /* IRQ for MAC2 */
+/* Reserved 26-31 */
+
+/*
+ * IRQs cascaded on SLP PER interrupt (MSP_INT_PER)
+ */
+#define MSP_PER_INTBASE (MSP_SLP_INTBASE + 32)
+/* Reserved 0-1 */
+#define MSP_INT_UART1 (MSP_PER_INTBASE + 2)
+ /* UART 1 */
+/* Reserved 3-5 */
+#define MSP_INT_2WIRE (MSP_PER_INTBASE + 6)
+ /* 2-wire */
+#define MSP_INT_TM0 (MSP_PER_INTBASE + 7)
+ /* Peripheral timer block out 0 */
+#define MSP_INT_TM1 (MSP_PER_INTBASE + 8)
+ /* Peripheral timer block out 1 */
+/* Reserved 9 */
+#define MSP_INT_SPRX (MSP_PER_INTBASE + 10)
+ /* SPI RX complete */
+#define MSP_INT_SPTX (MSP_PER_INTBASE + 11)
+ /* SPI TX complete */
+#define MSP_INT_GPIO (MSP_PER_INTBASE + 12)
+ /* GPIO */
+#define MSP_INT_PER_ERR (MSP_PER_INTBASE + 13)
+ /* Peripheral error */
+/* Reserved 14-31 */
+
+#endif /* !_MSP_SLP_INT_H */
diff --git a/arch/mips/kernel/.gitignore b/arch/mips/kernel/.gitignore
new file mode 100644
index 0000000..c5f676c
--- /dev/null
+++ b/arch/mips/kernel/.gitignore
@@ -0,0 +1 @@
+vmlinux.lds
diff --git a/arch/mips/pmc-sierra/msp71xx/msp_irq_slp.c b/arch/mips/pmc-sierra/msp71xx/msp_irq_slp.c
new file mode 100644
index 0000000..5bbcc47
--- /dev/null
+++ b/arch/mips/pmc-sierra/msp71xx/msp_irq_slp.c
@@ -0,0 +1,107 @@
+/*
+ * This file define the irq handler for MSP SLM subsystem interrupts.
+ *
+ * Copyright 2005-2006 PMC-Sierra, Inc, derived from irq_cpu.c
+ * Author: Andrew Hughes, Andrew_Hughes@pmc-sierra.com
+ *
+ * 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/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/bitops.h>
+
+#include <asm/mipsregs.h>
+#include <asm/system.h>
+
+#include <msp_slp_int.h>
+#include <msp_regs.h>
+
+static inline void unmask_msp_slp_irq(struct irq_data *d)
+{
+ unsigned int irq = d->irq;
+
+ /* check for PER interrupt range */
+ if (irq < MSP_PER_INTBASE)
+ *SLP_INT_MSK_REG |= (1 << (irq - MSP_SLP_INTBASE));
+ else
+ *PER_INT_MSK_REG |= (1 << (irq - MSP_PER_INTBASE));
+}
+
+static inline void mask_msp_slp_irq(struct irq_data *d)
+{
+ unsigned int irq = d->irq;
+
+ /* check for PER interrupt range */
+ if (irq < MSP_PER_INTBASE)
+ *SLP_INT_MSK_REG &= ~(1 << (irq - MSP_SLP_INTBASE));
+ else
+ *PER_INT_MSK_REG &= ~(1 << (irq - MSP_PER_INTBASE));
+}
+
+/*
+ * While we ack the interrupt interrupts are disabled and thus we don't need
+ * to deal with concurrency issues. Same for msp_slp_irq_end.
+ */
+static inline void ack_msp_slp_irq(struct irq_data *d)
+{
+ unsigned int irq = d->irq;
+
+ /* check for PER interrupt range */
+ if (irq < MSP_PER_INTBASE)
+ *SLP_INT_STS_REG = (1 << (irq - MSP_SLP_INTBASE));
+ else
+ *PER_INT_STS_REG = (1 << (irq - MSP_PER_INTBASE));
+}
+
+static struct irq_chip msp_slp_irq_controller = {
+ .name = "MSP_SLP",
+ .irq_ack = ack_msp_slp_irq,
+ .irq_mask = mask_msp_slp_irq,
+ .irq_unmask = unmask_msp_slp_irq,
+};
+
+void __init msp_slp_irq_init(void)
+{
+ int i;
+
+ /* Mask/clear interrupts. */
+ *SLP_INT_MSK_REG = 0x00000000;
+ *PER_INT_MSK_REG = 0x00000000;
+ *SLP_INT_STS_REG = 0xFFFFFFFF;
+ *PER_INT_STS_REG = 0xFFFFFFFF;
+
+ /* initialize all the IRQ descriptors */
+ for (i = MSP_SLP_INTBASE; i < MSP_PER_INTBASE + 32; i++)
+ irq_set_chip_and_handler(i, &msp_slp_irq_controller,
+ handle_level_irq);
+}
+
+void msp_slp_irq_dispatch(void)
+{
+ u32 pending;
+ int intbase;
+
+ intbase = MSP_SLP_INTBASE;
+ pending = *SLP_INT_STS_REG & *SLP_INT_MSK_REG;
+
+ /* check for PER interrupt */
+ if (pending == (1 << (MSP_INT_PER - MSP_SLP_INTBASE))) {
+ intbase = MSP_PER_INTBASE;
+ pending = *PER_INT_STS_REG & *PER_INT_MSK_REG;
+ }
+
+ /* check for spurious interrupt */
+ if (pending == 0x00000000) {
+ printk(KERN_ERR "Spurious %s interrupt?\n",
+ (intbase == MSP_SLP_INTBASE) ? "SLP" : "PER");
+ return;
+ }
+
+ /* dispatch the irq */
+ do_IRQ(ffs(pending) + intbase - 1);
+}
generated by cgit v1.1 at 2024-06-08 05:00:25 +0000