diff options
Diffstat (limited to 'sbe/sbefw/sbeirq.C')
| -rw-r--r-- | sbe/sbefw/sbeirq.C | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/sbe/sbefw/sbeirq.C b/sbe/sbefw/sbeirq.C deleted file mode 100644 index 33c63761..00000000 --- a/sbe/sbefw/sbeirq.C +++ /dev/null @@ -1,196 +0,0 @@ -/* IBM_PROLOG_BEGIN_TAG */ -/* This is an automatically generated prolog. */ -/* */ -/* $Source: sbe/sbefw/sbeirq.C $ */ -/* */ -/* OpenPOWER sbe Project */ -/* */ -/* Contributors Listed Below - COPYRIGHT 2015,2016 */ -/* [+] International Business Machines Corp. */ -/* */ -/* */ -/* Licensed under the Apache License, Version 2.0 (the "License"); */ -/* you may not use this file except in compliance with the License. */ -/* You may obtain a copy of the License at */ -/* */ -/* http://www.apache.org/licenses/LICENSE-2.0 */ -/* */ -/* Unless required by applicable law or agreed to in writing, software */ -/* distributed under the License is distributed on an "AS IS" BASIS, */ -/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */ -/* implied. See the License for the specific language governing */ -/* permissions and limitations under the License. */ -/* */ -/* IBM_PROLOG_END_TAG */ -/* - * @file: ppe/sbe/sbefw/sbeirq.C - * - * @brief This sets up and registers SBE ISRs - * - */ - -#include "sbeexeintf.H" -#include "sbeirq.H" -#include "sbetrace.H" -#include "assert.h" - -extern sbeIntrHandle_t g_sbeIntrSource ; - -//////////////////////////////////////////////////////////////// -// @brief: SBE control loop ISR: -// - FIFO new data available -// - FIFO reset request -// - PSU new data available -// -// @param[in] i_pArg - Unused -// @param[in] i_irq - IRQ number as defined in sbeirq.h -// -//////////////////////////////////////////////////////////////// -void sbe_interrupt_handler (void *i_pArg, PkIrqId i_irq) -{ - #define SBE_FUNC " sbe_interrupt_handler " - SBE_ENTER(SBE_FUNC"i_irq=[0x%02X]",i_irq); - - int l_rc = 0; - - switch (i_irq) - { - case SBE_IRQ_HOST_PSU_INTR: - g_sbeIntrSource.setIntrSource(SBE_INTERRUPT_ROUTINE, - SBE_INTERFACE_PSU); - break; - - case SBE_IRQ_SBEFIFO_DATA: - g_sbeIntrSource.setIntrSource(SBE_INTERRUPT_ROUTINE, - SBE_INTERFACE_FIFO); - pk_irq_disable(SBE_IRQ_SBEFIFO_RESET); - break; - - case SBE_IRQ_SBEFIFO_RESET: - g_sbeIntrSource.setIntrSource(SBE_INTERRUPT_ROUTINE, - SBE_INTERFACE_FIFO_RESET); - pk_irq_disable(SBE_IRQ_SBEFIFO_DATA); - break; - - default: - SBE_ERROR(SBE_FUNC"Unknown IRQ, assert"); - assert(0); - break; - } - // Mask the interrupt - pk_irq_disable(i_irq); - - // Unblock the command receiver thread - l_rc = pk_semaphore_post(&g_sbeSemCmdRecv); - if (l_rc) - { - // If we received an error while posting the semaphore, - // unmask the interrupt back and assert - SBE_ERROR(SBE_FUNC"pk_semaphore_post failed, rc=[%d]", l_rc); - pk_irq_enable(i_irq); - assert(!l_rc); - } - #undef SBE_FUNC -} - -//////////////////////////////////////////////////////////////// -// See sbeexeintf.h for more details -//////////////////////////////////////////////////////////////// -int sbeIRQSetup (void) -{ - #define SBE_FUNC " sbeIRQSetup " - int l_rc = 0; - PkIrqId l_irq; - - // Disable the relevant IRQs while we set them up - pk_irq_disable(SBE_IRQ_HOST_PSU_INTR); - pk_irq_disable(SBE_IRQ_SBEFIFO_DATA); - pk_irq_disable(SBE_IRQ_SBEFIFO_RESET); - - do - { - // Register the IRQ handler with PK - - // PSU New data available interrupt - l_irq = SBE_IRQ_HOST_PSU_INTR; - l_rc = pk_irq_handler_set(l_irq, sbe_interrupt_handler, NULL); - if(l_rc) - { - break; - } - - // FIFO New data available interrupt - l_irq = SBE_IRQ_SBEFIFO_DATA; - l_rc = pk_irq_handler_set(l_irq, sbe_interrupt_handler, NULL); - if(l_rc) - { - break; - } - - // FIFO Reset request - l_irq = SBE_IRQ_SBEFIFO_RESET; - l_rc = pk_irq_handler_set(l_irq, sbe_interrupt_handler, NULL); - if(l_rc) - { - break; - } - - // Enable the IRQ - pk_irq_enable(SBE_IRQ_SBEFIFO_RESET); - pk_irq_enable(SBE_IRQ_SBEFIFO_DATA); - pk_irq_enable(SBE_IRQ_HOST_PSU_INTR); - } while(false); - - if (l_rc) - { - SBE_ERROR (SBE_FUNC"pk_irq_handler_set failed, IRQ=[0x%02X], " - "rc=[%d]", l_irq, l_rc); - } - - return l_rc; - #undef SBE_FUNC -} - -//////////////////////////////////////////////////////////////// -// SBE handler for the PPE machine check interrupt -//////////////////////////////////////////////////////////////// -// TODO: via RTC 155896 - Change the way bad scoms are handled. -// Once HW375602 is fixed, there will be no need for this -// interrupt handler. -extern "C" void __sbe_machine_check_handler() -{ - asm( - "# Save r4 to stack, since it is going to be used by\n" - "# this handler\n" - "stwu %r1, -8(%r1)\n" - "stw %r4, 0(%r1)\n" - "# Check the MCS bits (29:31) in the ISR to determine the cause for the machine check\n" - "# For a data machine check, the MCS should be 0x001 to 0x011\n" - "mfisr %r4\n" - "andi. %r4, %r4, 0x0007\n" - "bwz %r4, __hang_forever\n" - "cmpwibgt %r4, 0x0003, __hang_forever\n" - "# The EDR contains the address that caused the machine check\n" - "mfedr %r4\n" - "srawi %r4, %r4, 16\n" - "# If the address is in the range 0x00000000 - 0x7f000000, we treat it as a\n" - "# failed scom and jump to __scom_error\n" - "cmplwi %r4, 0x8000\n" - "blt __scom_error\n" - "# Else, just hang here forever\n" - "__hang_forever:\n" - "b .\n" - "__scom_error:\n" - "# The srr0 contains the address of the instruction that caused the machine\n" - "# check (since the the interrupt is raised *before* the instruction\n" - "# completed execution). Since we want the code to continue with the next\n" - "# instruction, we increment srr0 by 4, restore r4, and rfi to branch to srr0\n" - "mfsrr0 %r4\n" - "addi %r4, %r4, 4\n" - "mtsrr0 %r4\n" - "lwz %r4, 0(%r1)\n" - "addi %r1, %r1, 8\n" - "rfi\n" - ); -} - |
