| 1 | /*
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| 2 | * Copyright (c) 2007 Martin Decky
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup kernel_mips32
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| 35 | #include <arch/mach/msim/dorder.h>
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| 36 | #include <arch/mach/msim/msim.h>
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| 37 | #include <stdint.h>
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| 38 | #include <smp/ipi.h>
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| 39 | #include <interrupt.h>
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| 40 | #include <arch/asm.h>
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| 41 | #include <typedefs.h>
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| 42 |
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| 43 | static irq_t dorder_irq;
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| 44 |
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| 45 | #ifdef CONFIG_SMP
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| 46 |
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| 47 | void ipi_broadcast_arch(int ipi)
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| 48 | {
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| 49 | pio_write_32(((ioport32_t *) MSIM_DORDER_ADDRESS), 0x7fffffff);
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| 50 | }
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| 51 |
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| 52 | #endif
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| 53 |
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| 54 | static irq_ownership_t dorder_claim(irq_t *irq)
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| 55 | {
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| 56 | return IRQ_ACCEPT;
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| 57 | }
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| 58 |
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| 59 | static void dorder_irq_handler(irq_t *irq)
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| 60 | {
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| 61 | dorder_ipi_ack(1 << dorder_cpuid());
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| 62 | }
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| 63 |
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| 64 | void dorder_init(void)
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| 65 | {
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| 66 | irq_initialize(&dorder_irq);
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| 67 | dorder_irq.inr = MSIM_DORDER_IRQ;
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| 68 | dorder_irq.claim = dorder_claim;
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| 69 | dorder_irq.handler = dorder_irq_handler;
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| 70 | irq_register(&dorder_irq);
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| 71 |
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| 72 | cp0_unmask_int(MSIM_DORDER_IRQ);
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| 73 | }
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| 74 |
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| 75 | uint32_t dorder_cpuid(void)
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| 76 | {
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| 77 | return pio_read_32((ioport32_t *) MSIM_DORDER_ADDRESS);
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| 78 | }
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| 79 |
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| 80 | void dorder_ipi_ack(uint32_t mask)
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| 81 | {
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| 82 | pio_write_32((ioport32_t *) (MSIM_DORDER_ADDRESS + 4), mask);
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| 83 | }
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| 84 |
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| 85 | /** @}
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| 86 | */
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