diff options
Diffstat (limited to 'arch/mips/pmc-sierra/yosemite/irq.c')
| -rw-r--r-- | arch/mips/pmc-sierra/yosemite/irq.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/arch/mips/pmc-sierra/yosemite/irq.c b/arch/mips/pmc-sierra/yosemite/irq.c deleted file mode 100644 index 6590812daa56..000000000000 --- a/arch/mips/pmc-sierra/yosemite/irq.c +++ /dev/null @@ -1,152 +0,0 @@ -/* - * Copyright (C) 2003 PMC-Sierra Inc. - * Author: Manish Lachwani (lachwani@pmc-sierra.com) - * - * Copyright (C) 2006 Ralf Baechle (ralf@linux-mips.org) - * - * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * 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., - * 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Second level Interrupt handlers for the PMC-Sierra Titan/Yosemite board - */ -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/kernel_stat.h> -#include <linux/module.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/types.h> -#include <linux/interrupt.h> -#include <linux/ioport.h> -#include <linux/irq.h> -#include <linux/timex.h> -#include <linux/random.h> -#include <linux/bitops.h> -#include <asm/bootinfo.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/irq_cpu.h> -#include <asm/mipsregs.h> -#include <asm/titan_dep.h> - -/* Hypertransport specific */ -#define IRQ_ACK_BITS 0x00000000 /* Ack bits */ - -#define HYPERTRANSPORT_INTA 0x78 /* INTA# */ -#define HYPERTRANSPORT_INTB 0x79 /* INTB# */ -#define HYPERTRANSPORT_INTC 0x7a /* INTC# */ -#define HYPERTRANSPORT_INTD 0x7b /* INTD# */ - -extern void titan_mailbox_irq(void); - -#ifdef CONFIG_HYPERTRANSPORT -/* - * Handle hypertransport & SMP interrupts. The interrupt lines are scarce. - * For interprocessor interrupts, the best thing to do is to use the INTMSG - * register. We use the same external interrupt line, i.e. INTB3 and monitor - * another status bit - */ -static void ll_ht_smp_irq_handler(int irq) -{ - u32 status = OCD_READ(RM9000x2_OCD_INTP0STATUS4); - - /* Ack all the bits that correspond to the interrupt sources */ - if (status != 0) - OCD_WRITE(RM9000x2_OCD_INTP0STATUS4, IRQ_ACK_BITS); - - status = OCD_READ(RM9000x2_OCD_INTP1STATUS4); - if (status != 0) - OCD_WRITE(RM9000x2_OCD_INTP1STATUS4, IRQ_ACK_BITS); - -#ifdef CONFIG_HT_LEVEL_TRIGGER - /* - * Level Trigger Mode only. Send the HT EOI message back to the source. - */ - switch (status) { - case 0x1000000: - OCD_WRITE(RM9000x2_OCD_HTEOI, HYPERTRANSPORT_INTA); - break; - case 0x2000000: - OCD_WRITE(RM9000x2_OCD_HTEOI, HYPERTRANSPORT_INTB); - break; - case 0x4000000: - OCD_WRITE(RM9000x2_OCD_HTEOI, HYPERTRANSPORT_INTC); - break; - case 0x8000000: - OCD_WRITE(RM9000x2_OCD_HTEOI, HYPERTRANSPORT_INTD); - break; - case 0x0000001: - /* PLX */ - OCD_WRITE(RM9000x2_OCD_HTEOI, 0x20); - OCD_WRITE(IRQ_CLEAR_REG, IRQ_ACK_BITS); - break; - case 0xf000000: - OCD_WRITE(RM9000x2_OCD_HTEOI, HYPERTRANSPORT_INTA); - OCD_WRITE(RM9000x2_OCD_HTEOI, HYPERTRANSPORT_INTB); - OCD_WRITE(RM9000x2_OCD_HTEOI, HYPERTRANSPORT_INTC); - OCD_WRITE(RM9000x2_OCD_HTEOI, HYPERTRANSPORT_INTD); - break; - } -#endif /* CONFIG_HT_LEVEL_TRIGGER */ - - do_IRQ(irq); -} -#endif - -asmlinkage void plat_irq_dispatch(void) -{ - unsigned int cause = read_c0_cause(); - unsigned int status = read_c0_status(); - unsigned int pending = cause & status; - - if (pending & STATUSF_IP7) { - do_IRQ(7); - } else if (pending & STATUSF_IP2) { -#ifdef CONFIG_HYPERTRANSPORT - ll_ht_smp_irq_handler(2); -#else - do_IRQ(2); -#endif - } else if (pending & STATUSF_IP3) { - do_IRQ(3); - } else if (pending & STATUSF_IP4) { - do_IRQ(4); - } else if (pending & STATUSF_IP5) { -#ifdef CONFIG_SMP - titan_mailbox_irq(); -#else - do_IRQ(5); -#endif - } else if (pending & STATUSF_IP6) { - do_IRQ(4); - } -} - -/* - * Initialize the next level interrupt handler - */ -void __init arch_init_irq(void) -{ - clear_c0_status(ST0_IM); - - mips_cpu_irq_init(); - rm7k_cpu_irq_init(); - rm9k_cpu_irq_init(); -} |