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98 lines
2.9 KiB
98 lines
2.9 KiB
/* |
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* Copyright (C) 2004 Florian Schirmer <[email protected]> |
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* |
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* This program is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License as published by the |
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* Free Software Foundation; either version 2 of the License, or (at your |
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* option) any later version. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN |
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with this program; if not, write to the Free Software Foundation, Inc., |
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* 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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#include "bcm47xx_private.h" |
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#include <linux/types.h> |
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#include <linux/interrupt.h> |
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#include <linux/irq.h> |
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#include <asm/setup.h> |
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#include <asm/irq_cpu.h> |
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#include <bcm47xx.h> |
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asmlinkage void plat_irq_dispatch(void) |
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{ |
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u32 cause; |
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cause = read_c0_cause() & read_c0_status() & CAUSEF_IP; |
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clear_c0_status(cause); |
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if (cause & CAUSEF_IP7) |
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do_IRQ(7); |
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if (cause & CAUSEF_IP2) |
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do_IRQ(2); |
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if (cause & CAUSEF_IP3) |
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do_IRQ(3); |
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if (cause & CAUSEF_IP4) |
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do_IRQ(4); |
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if (cause & CAUSEF_IP5) |
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do_IRQ(5); |
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if (cause & CAUSEF_IP6) |
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do_IRQ(6); |
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} |
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#define DEFINE_HWx_IRQDISPATCH(x) \ |
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static void bcm47xx_hw ## x ## _irqdispatch(void) \ |
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{ \ |
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do_IRQ(x); \ |
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} |
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DEFINE_HWx_IRQDISPATCH(2) |
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DEFINE_HWx_IRQDISPATCH(3) |
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DEFINE_HWx_IRQDISPATCH(4) |
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DEFINE_HWx_IRQDISPATCH(5) |
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DEFINE_HWx_IRQDISPATCH(6) |
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DEFINE_HWx_IRQDISPATCH(7) |
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void __init arch_init_irq(void) |
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{ |
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/* |
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* This is the first arch callback after mm_init (we can use kmalloc), |
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* so let's finish bus initialization now. |
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*/ |
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bcm47xx_bus_setup(); |
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#ifdef CONFIG_BCM47XX_BCMA |
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if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) { |
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bcma_write32(bcm47xx_bus.bcma.bus.drv_mips.core, |
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BCMA_MIPS_MIPS74K_INTMASK(5), 1 << 31); |
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/* |
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* the kernel reads the timer irq from some register and thinks |
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* it's #5, but we offset it by 2 and route to #7 |
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*/ |
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cp0_compare_irq = 7; |
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} |
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#endif |
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mips_cpu_irq_init(); |
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if (cpu_has_vint) { |
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pr_info("Setting up vectored interrupts\n"); |
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set_vi_handler(2, bcm47xx_hw2_irqdispatch); |
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set_vi_handler(3, bcm47xx_hw3_irqdispatch); |
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set_vi_handler(4, bcm47xx_hw4_irqdispatch); |
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set_vi_handler(5, bcm47xx_hw5_irqdispatch); |
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set_vi_handler(6, bcm47xx_hw6_irqdispatch); |
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set_vi_handler(7, bcm47xx_hw7_irqdispatch); |
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} |
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}
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