diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/mvme3100/irq/irq_init.c')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/mvme3100/irq/irq_init.c | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/c/src/lib/libbsp/powerpc/mvme3100/irq/irq_init.c b/c/src/lib/libbsp/powerpc/mvme3100/irq/irq_init.c deleted file mode 100644 index c40692e688..0000000000 --- a/c/src/lib/libbsp/powerpc/mvme3100/irq/irq_init.c +++ /dev/null @@ -1,138 +0,0 @@ -/* irq_init.c - * - * This file contains the implementation of rtems initialization - * related to interrupt handling. - * - * CopyRight (C) 1999 valette@crf.canon.fr - * - * Enhanced by Jay Kulpinski <jskulpin@eng01.gdds.com> - * to make it valid for MVME2300 Motorola boards. - * - * Till Straumann <strauman@slac.stanford.edu>, 12/20/2001: - * Use the new interface to openpic_init - * - * Adapted for the mvme3100 BSP by T. Straumann, 2007. - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - */ - -#include <libcpu/io.h> -#include <bsp/pci.h> -#include <bsp/openpic.h> -#include <bsp/irq.h> -#include <bsp.h> -#include <bsp/vectors.h> -#include <rtems/bspIo.h> - -static void nop_func(void *unused) -{ - printk("Unhandled IRQ\n"); -} - -static rtems_irq_connect_data rtemsIrq[BSP_IRQ_NUMBER]; -static rtems_irq_global_settings initial_config; -static rtems_irq_connect_data defaultIrq = { - /* vectorIdex, hdl , handle , on , off , isOn */ - 0, nop_func , NULL , 0 , 0 , 0 -}; - -static rtems_irq_prio irqPrioTable[BSP_IRQ_NUMBER]={ - /* - * actual priorities for interrupt : - * 0 means that only current interrupt is masked - * 255 means all other interrupts are masked - */ - /* - * PCI Interrupts - */ - 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, /* for raven prio 0 means unactive... */ - 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, /* for raven prio 0 means unactive... */ - 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, /* for raven prio 0 means unactive... */ - /* - * Processor exceptions handled as interrupts - */ - 0 -}; - - /* - * This code assumes the exceptions management setup has already - * been done. We just need to replace the exceptions that will - * be handled like interrupt. On mcp750/mpc750 and many PPC processors - * this means the decrementer exception and the external exception. - */ -void BSP_rtems_irq_mng_init(unsigned cpuId) -{ - /* We should really have a way to find the number of sources - * the driver will use so that the size of the polarity-array - * matches the driver's idea of it. - */ - unsigned char pol[56]; - int i; - - /* Note: The openpic driver initializes only as many - * 'pic-external' interrupt sources as reported - * by the feature register. - * The 8540's openpic supports 12 core-external - * and 23 core-internal (both of these groups - * are external to the PIC, i.e., 'pic-external') - * interrupts but between the corresponding - * banks of vector/priority registers there is - * a gap leaving space for 4 (unsupported) irqs. - * The driver, not knowing of this gap, would - * initialize the 12 core-external sources - * followed by 4 unsupported sources and 19 - * core-internal sources thus leaving the last - * four core-internal sources uninitialized. - * Luckily, the feature register reports - * too many sources: - * - the 4 IPI plus 4 timer plus 4 messaging - * sources are included with the count - * - there are unused core-internal sources 24..32 - * which are also supported by the pic - * bringing the reported number of sources to - * a count of 56 (12+32+4+4+4) which is enough - * so that all pic-external sources are covered - * and initialized. - * - * NOTE: All core-internal sources are active-high. - * The manual says that setting the polarity - * to 'low/0' will disable the interrupt but - * I found this not to be true: on the device - * I tested the interrupt was asserted hard. - */ - - /* core-external sources on the mvme3100 are active-low, - * core-internal sources are active high. - */ - for (i=0; i<BSP_EXT_IRQ_NUMBER; i++) - pol[i]=0; - for (i=BSP_EXT_IRQ_NUMBER; i< BSP_EXT_IRQ_NUMBER + BSP_CORE_IRQ_NUMBER; i++) - pol[i]=1; - - openpic_init(1, pol, 0, 0, 0, 0); - - /* - * re-init the rtemsIrq table - */ - for (i = 0; i < BSP_IRQ_NUMBER; i++) { - rtemsIrq[i] = defaultIrq; - rtemsIrq[i].name = i; - } - /* - * Init initial Interrupt management config - */ - initial_config.irqNb = BSP_IRQ_NUMBER; - initial_config.defaultEntry = defaultIrq; - initial_config.irqHdlTbl = rtemsIrq; - initial_config.irqBase = BSP_LOWEST_OFFSET; - initial_config.irqPrioTbl = irqPrioTable; - - if (!BSP_rtems_irq_mngt_set(&initial_config)) { - /* - * put something here that will show the failure... - */ - rtems_panic("Unable to initialize RTEMS interrupt Management!!! System locked\n"); - } -} |